Hitachi Industrial Equipment Systems Co., Ltd.

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IPC Class
F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type 101
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode 97
F04C 29/04 - Heating; Cooling; Heat insulation 80
F04B 49/06 - Control using electricity 59
B41J 2/01 - Ink jet 56
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1.

TEMPERATURE INDICATOR AND METHOD FOR PRODUCING TEMPERATURE INDICATOR

      
Application Number JP2022047874
Publication Number 2024/142146
Status In Force
Filing Date 2022-12-26
Publication Date 2024-07-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Aida Kohhei
  • Ogino Masahiko

Abstract

This temperature indicator comprises: a first temperature detection material that changes in color due to an amorphous crystallization phenomenon; a second temperature detection material that changes in color irreversibly within a temperature range that is higher than the glass transition point of the first temperature detection material and lower than the melting point of the first temperature detection material; and a substrate on which the first temperature detection material and the second temperature detection material are disposed. The first temperature detection material has a phase separation structure in which a temperature-indicating material containing a leuco dye, a color developer, and a decolorizer is dispersed in a matrix material.

IPC Classes  ?

  • G01K 11/16 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance of organic materials
  • G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance

2.

FEE CALCULATION SYSTEM AND FEE CALCULATION METHOD

      
Application Number JP2022048550
Publication Number 2024/142369
Status In Force
Filing Date 2022-12-28
Publication Date 2024-07-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Matsuzaka Takehiro
  • Takano Masahiko
  • Okita Shogo

Abstract

In this fee calculation system, a calculation device: selects a constituent apparatus of a compressed gas system on the basis of a quality parameter representing the quality of gas produced by the compressed gas system; calculates at least one cost from among the initiation cost of the compressed gas system, a maintenance cost for a prescribed period, and a driving cost for the prescribed period, on the basis of the selected constituent apparatus; calculates a reference cost on the basis of the result of calculating the at least one cost; divides the reference cost by the amount of gas that can be supplied by the compressed gas system within the prescribed period to thereby calculate the value of compressed gas produced by the compressed gas system; calculates a usage fee for the compressed gas system on the basis of the calculated value of the compressed gas and the amount of compressed gas used; and outputs the value of the compressed gas and the usage fee for the compressed gas system.

IPC Classes  ?

3.

FEE CALCULATION SYSTEM AND FEE CALCULATION METHOD

      
Application Number JP2022048395
Publication Number 2024/142325
Status In Force
Filing Date 2022-12-27
Publication Date 2024-07-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Kajie Yuta
  • Morita Kenji
  • Yorikane Shigeyuki

Abstract

This fee calculation system comprises a calculation device that calculates the usage fee for an air compressor, in which the calculation device acquires environmental information that is information about the installation environment of the air compressor, calculates the replacement cycle of the parts that make up the air compressor on the basis of the acquired environmental information, calculates the usage fee of the air compressor on the basis of the calculated replacement cycle, and outputs the calculated usage fee of the air compressor.

IPC Classes  ?

4.

INSULATION SUPPORT COMPONENT AND GAS INSULATION SWITCHING DEVICE

      
Application Number JP2023007626
Publication Number 2024/142419
Status In Force
Filing Date 2023-03-01
Publication Date 2024-07-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Satou Kazuhiro
  • Nukaga Jun
  • Sugai Daisuke

Abstract

The present invention comprises: a first embedded metal fitting embedded in one side of a first insulator; a conductor connected to the first embedded metal fitting; and a second insulator disposed in a space surrounded by at least the first insulator and the conductor.

IPC Classes  ?

  • H02B 13/045 - Gas-insulated switchgear - Details of casing, e.g. gas tightness

5.

ROTATING ELECTRICAL MACHINE

      
Application Number JP2023023801
Publication Number 2024/142435
Status In Force
Filing Date 2023-06-27
Publication Date 2024-07-04
Owner
  • HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
  • HITACHI, LTD. (Japan)
Inventor
  • Hasegawa Yu
  • Takeuchi Keisuke
  • Kimura Mamoru

Abstract

The present invention achieves a more lightweight rotor of a rotating electrical machine, and reduces the magnetic resistance of the q axis while reducing the amount of rotor deformation during high-speed rotation. A plurality of magnet insertion holes 126a-126c of a rotator are located line-symmetrically about the d axis, which is the magnetic pole central axis. On the inner peripheral side of the magnet insertion holes 126a, 126c close to the q axis, lightening holes 128, 129 shaped to have curves are formed. The cross-sectional shapes of the lightening holes 128, 129 are arranged such that a nearest point 70 from a rotation axis A1 coincides with a curved portion having the largest curvature. The magnet insertion holes 126a, 126c and a straight part of the lightening holes are arranged to be at a constant distance S for the entirety of the opposing portions thereof, wherein an outermost peripheral position 50 on the side forming a lightening hole is positioned farther to the outer periphery than an end part 60 closest to the central axis of the rotator on the side forming a magnet insertion hole.

IPC Classes  ?

  • H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

6.

POWER CONVERSION DEVICE

      
Application Number JP2023023297
Publication Number 2024/134932
Status In Force
Filing Date 2023-06-23
Publication Date 2024-06-27
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Sato, Fumihiro
  • Tanabe, Keisuke
  • Hamano, Koji
  • Miyazaki, Hiroyoshi

Abstract

An objective of this invention is to provide a power conversion device reduced in size and capable of stable operation. The following serves to achieve said objective. A smoothing capacitor 21 outputs the high-side voltage level of a DC voltage, and a smoothing capacitor 22 is connected to the smoothing capacitor 21 in series and outputs the low-side voltage level of the DC voltage. An inverter circuit 103 converts the DC voltages output from the smoothing capacitors 21, 22 into AC voltages. A control circuit 104 controls the inverter circuit 103. A main circuit board 61 is mounted with the inverter circuit 103. The smoothing capacitors 21, 22 are each disposed so that the axial direction that determines the maximum length size is substantially parallel with the planar direction of the main circuit board 61. The smoothing capacitor 21 is disposed at a position further away from the control circuit 104 than the smoothing capacitor 22.

IPC Classes  ?

  • H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

7.

INSULATION MONITORING APPARATUS, AND INSULATION MONITORING METHOD

      
Application Number JP2023044242
Publication Number 2024/128194
Status In Force
Filing Date 2023-12-11
Publication Date 2024-06-20
Owner
  • HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
  • CHINO CORPORATION (Japan)
Inventor
  • Yoshizaki, Akio
  • Ishibashi, Shozo
  • Nemoto, Masanobu
  • Ide, Yu

Abstract

This insulation monitoring apparatus monitors a leakage current relating to a switching device for controlling electric power supplied from a power source to a load, and comprises a leakage current acquiring unit for acquiring a leakage current value detected by a leakage current detecting unit provided between the switching device and the load and/or between the switching device and a primary side, a primary-side voltage acquiring unit for acquiring a power source voltage value, which is a voltage value of the power source, and a period identifying unit for identifying an ON period, which is a period in which electric power is being supplied to the load by the switching device, the insulation monitoring apparatus being additionally provided with an estimating unit which, if a period in which electric power is not being supplied to the load by the switching device is defined as an OFF period, estimates, on the basis of the leakage current value during the ON period, a normalized leakage current value, which is an effective value of the leakage current value for a case in which the ON period is 100%, relative to the power source voltage value.

IPC Classes  ?

  • G01R 31/52 - Testing for short-circuits, leakage current or ground faults

8.

PARTIAL DISCHARGE DETECTION METHO AND DEVICE THEREFOR

      
Application Number JP2023009895
Publication Number 2024/127682
Status In Force
Filing Date 2023-03-14
Publication Date 2024-06-20
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Lu Li
  • Sato Takashi
  • Ishizaki Shinichi

Abstract

A partial discharge occurring inside an apparatus being measured is detected using the frequencies of two current signals generated through discharge and the difference in time of detection thereof. This partial discharge detection device comprises a transient ground voltage sensor 2 attached to the surface of a high-voltage apparatus 100, a high-speed waveform measuring device that converts an output from the sensor 2 into a detection waveform, and an arithmetic device that analyzes the converted detection waveform. When a partial discharge occurs inside the high-voltage apparatus 100, a high-frequency current signal F1 and a low-frequency current signal F2 are generated. The signal F1 is excited on the inner surface of a housing 101 as in a path 132, flows on a surface of the housing 101, and is detected by the sensor 2. The signal F2 flows on the housing 101 via a ground line 113 as in a path 133, and is detected by the sensor 2. The detected signals are Fourier-transformed and include two frequencies. If the two signals are transmitted with a predetermined transmission time difference Δt, it is determined that a partial discharge has occurred.

IPC Classes  ?

  • G01R 31/12 - Testing dielectric strength or breakdown voltage

9.

INKJET PRINTER AND PRINTING SYSTEM OF INKJET PRINTER

      
Application Number JP2023019000
Publication Number 2024/127685
Status In Force
Filing Date 2023-05-22
Publication Date 2024-06-20
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Otowa Takuya
  • Kawano Takashi
  • Suzuki Tatsunosuke
  • Akashi Dai
  • Terada Shohei
  • Ogino Masahiko

Abstract

A charging phase waveform indicating the relationship between a charging phase and the amount of charge of ink particles is measured, an excitation voltage characteristic indicating the relationship between an excitation voltage and a feature amount calculated from the charging phase waveform is measured, an excitation voltage setting value that can be printed is calculated on the basis of the excitation voltage characteristic, and the calculated excitation voltage setting value is transmitted to a nozzle.

IPC Classes  ?

  • B41J 2/08 - Ink jet characterised by jet control for many-valued deflection charge-control type
  • B41J 2/195 - Ink jet characterised by ink handling for monitoring ink quality

10.

SAFETY CABINET

      
Application Number 17615969
Status Pending
Filing Date 2021-06-15
First Publication Date 2024-06-13
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Matsumura, Takeshi
  • Kaneko, Takeshi

Abstract

A safety cabinet has an opening portion in the front surface of a work room and a front shutter and supplies clean air to the work room from above. A side slit is provided in the side surface of the work room, air from the provided side slit joins an air flow path suctioned from a front grille of a workbench forming the bottom surface of the work room, and the turbulence of an airstream can be prevented even when a device is installed in the work room.

IPC Classes  ?

11.

SCREW COMPRESSOR

      
Application Number 18437497
Status Pending
Filing Date 2024-02-09
First Publication Date 2024-06-06
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tanimoto, Shota
  • Yorikane, Shigeyuki
  • Komatsu, Tomohiro
  • Tsuchiya, Takeshi
  • Chiba, Kotaro

Abstract

This screw compressor is provided with a screw rotor, a casing accommodating the screw rotor, and a liquid feed mechanism for feeding a liquid into an operating chamber enclosed by the casing, wherein the pitch of the screw rotor changes in the axial direction from a suction end surface toward a discharge end surface.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
  • F04C 29/02 - Lubrication; Lubricant separation 

12.

SCREW COMPRESSOR

      
Application Number JP2023018433
Publication Number 2024/116433
Status In Force
Filing Date 2023-05-17
Publication Date 2024-06-06
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Tsuchiya Takeshi
  • Chiba Kotaro
  • Yabe Toshiaki
  • Sakai Kohei
  • Sano Shotaro
  • Taniyama Yuki

Abstract

Provided is a screw compressor with which it is possible to improve cooling efficiency. A casing cooling flow path 12 of the screw compressor includes: a discharge-side cooling flow path 13 formed across the upper side of a casing 4 and the entire outer periphery of a discharge flow path 11; a male rotor-side cooling flow path 14 which is formed on one side of the casing 4 in the horizontal direction, and into which a cooling liquid flows from the discharge-side cooling flow path 13; a female rotor-side cooling flow path 15 which is formed on the opposite side of the casing 4 in the horizontal direction, and into which flows the cooling refrigerant from the discharge-side cooling flow path 13; a lateral rib 22 that is provided in the male rotor-side cooling flow path 14 so as to extend in the rotor axial direction, and that suppresses the cooling liquid from flowing into the male rotor-side cooling flow path 14 from the discharge-side cooling flow path 13; and a lateral rib 23 that is provided to the female rotor-side cooling flow path 15 so as to extend in the rotor axial direction, and that suppresses the cooling liquid from flowing into the female rotor-side cooling flow path 15 from the discharge-side cooling flow path 13.

IPC Classes  ?

13.

INKJET RECORDING DEVICE

      
Application Number JP2022043711
Publication Number 2024/116220
Status In Force
Filing Date 2022-11-28
Publication Date 2024-06-06
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Kawano Takashi

Abstract

This inkjet recording device comprises: a code reading unit that reads code data from an information code; a storage unit in which stored is a code template which is used to analyze code data and which stipulates the position, in code data, of information indicating a printing subject and the printing position of the printing subject with respect to a printing target; and a control unit that, on the basis of the code data and the code template corresponding to the code data, creates printing data for printing the printing subject at the printing position.

IPC Classes  ?

  • B41J 21/16 - Column, tabular or like printing arrangements; Means for centralising short lines controlled by the sensing of marks or formations on the paper being typed, an undersheet, or the platen
  • B41J 2/01 - Ink jet

14.

POWER CONVERSION DEVICE

      
Application Number JP2023035420
Publication Number 2024/111247
Status In Force
Filing Date 2023-09-28
Publication Date 2024-05-30
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Nakahara Mizuki
  • Shimada Takae
  • Takeda Kenji
  • Aida Shin
  • Uei Yusuke

Abstract

Provided is a power conversion device capable of stepping up DC voltage by two times or more by providing the energy storage period of a resonant inductor of a resonance-type double-voltage rectifier circuit. A resonance-type double-voltage rectifier circuit 1 of a power conversion device 100 comprises: a bridge 103 connected to a three-phase AC power supply 101; an inductor L1 on the upper arm cathode side of the bridge 103; an inductor L2 on the lower arm anode side of the bridge 103; switches S1, S2 connected between the inductors L1, L2 and connected in series; a diode Dc1, the anode of which is connected between the inductor L1 and the switch S1; a diode Dc2, the cathode of which is connected between the inductor L2 and the switch S2; a capacitor C1 connected in parallel with the diode Dc1 and the switch S1; a capacitor C2 connected in parallel with the diode Dc2 and the switch S2 and connected in series with the capacitor C1; and an inductor L3, one end of which is connected between the switches S1, S2 and the other end of which is connected between the capacitors C1, C2.

IPC Classes  ?

  • H02M 7/12 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02M 7/10 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage

15.

POWER CONVERSION DEVICE AND MOTOR CONTROL SYSTEM

      
Application Number JP2023023296
Publication Number 2024/111144
Status In Force
Filing Date 2023-06-23
Publication Date 2024-05-30
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Tobari, Kazuaki
  • Onuma, Yusaku
  • Sugimoto, Takuya
  • Hayashi, Takaaki
  • Watanabe, Hiroshi

Abstract

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IPC Classes  ?

  • H02P 21/22 - Current control, e.g. using a current control loop
  • H02P 21/05 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting

16.

POWER CONVERSION DEVICE

      
Application Number JP2023023716
Publication Number 2024/111148
Status In Force
Filing Date 2023-06-27
Publication Date 2024-05-30
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Tobari Kazuaki
  • Taguchi Yoshiyuki
  • Iwase Yuta

Abstract

Provided is a power conversion device that suppresses ripples of the speed of a motor for driving and suppresses ripples of torque, thereby achieving safe, highly precise, and highly efficient control characteristics. This power conversion device that drives a magnet motor has: a first filter unit having a primary system transfer function filter that varies according to a ripple component of the magnet motor, and computes a second speed estimated value from a speed command value and a first speed estimated value; a speed control unit that computes a first torque current command value from the speed command value and the second speed estimated value; and a second filter unit having a secondary system transfer function filter that varies according to a ripple component, and computes a second torque current command value from a first torque current command value, wherein the power conversion device controls the power supplied to the magnet motor on the basis of the second torque current command value.

IPC Classes  ?

  • H02P 21/05 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting
  • H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
  • H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

17.

Monitoring Apparatus and Method

      
Application Number 18282833
Status Pending
Filing Date 2022-03-18
First Publication Date 2024-05-23
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Kono, Masashi
  • Nakagawa, Yuusuke
  • Tottori, Nobuhiro

Abstract

Designation of equipment identifying information for identifying object equipment that is the equipment which is an analysis object, and an analysis item to be analyzed regarding the object equipment is accepted; data of a data type which is required to analyze the accepted analysis item is acquired and a current equipment status of the object equipment is decided based on the acquired data; a diagnosis score for evaluating a current status of the object equipment as a score is calculated based on the decided equipment status of the object equipment and a diagnosis result of the object equipment is decided on the basis of the calculated diagnosis score; and the decided diagnosis result of the object equipment is visualized.

IPC Classes  ?

18.

REVERSE ELECTRIC POWER BREAKER/RELAY AND METHOD FOR CUTTING OFF REVERSE ELECTRIC POWER IN REVERSE ELECTRIC POWER BREAKER/RELAY

      
Application Number JP2023007657
Publication Number 2024/105897
Status In Force
Filing Date 2023-03-01
Publication Date 2024-05-23
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Katou Shunsuke

Abstract

2222 < c), whereby it is determined whether reverse electric power has occurred using the two types of threshold values. When a reverse electric current that exceeds both the first threshold value and the second threshold value has been detected, the network relay cuts off an electric power line from the network bus by controlling a breaker that is provided in the electric power line.

IPC Classes  ?

  • H02H 7/28 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred for meshed systems
  • H02H 3/027 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection - Details with automatic disconnection after a predetermined time
  • H02H 3/05 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection - Details with means for increasing reliability, e.g. redundancy arrangements
  • H02H 3/38 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltage and current

19.

ROTARY ELECTRICAL MACHINE AND INDUSTRIAL MACHINE

      
Application Number JP2023029042
Publication Number 2024/095555
Status In Force
Filing Date 2023-08-09
Publication Date 2024-05-10
Owner
  • HITACHI, LTD. (Japan)
  • HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Hasegawa Yu
  • Enomoto Yuji
  • Tokoi Hirooki
  • Ikeda Kenji
  • Mikami Hiroyuki

Abstract

The present invention comprises: a rotor (3); a stator iron core (21) having a plurality of slots (21c) between the rotor (3) and a back yoke (21a); a resin bobbin (22) that has a plurality of coil insertion holes (22a) disposed along a radial direction of the stator iron core (21) and that is fitted in the slots (21c); and a first gap hole (22ca) provided to a side wall (22c), among side walls of the bobbin (22), closest to the back yoke (21a).

IPC Classes  ?

  • H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

20.

STATIONARY ELECTROMAGNETIC DEVICE AND BI-DIRECTIONAL DC-DC CONVERTER USING STATIONARY ELECTROMAGNETIC DEVICE

      
Application Number JP2023013851
Publication Number 2024/095508
Status In Force
Filing Date 2023-04-03
Publication Date 2024-05-10
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Kurita Naoyuki
  • Tatemura Makoto

Abstract

Provided is a stationary electromagnetic device having a winding structure such that a wide range of leakage inductances can be set without using special structures or construction methods. On a first magnetic leg portion 2a of a single-phase core 2, which is formed by molding a magnetic material into an annular shape, a first primary winding 11 and a first secondary winding 21 are disposed overlapping each other with a spacer 7 therebetween to maintain a certain spacing therebetween. On a second magnetic leg portion, a second primary winding 12 and a second secondary winding 22 are disposed with a spacer 8 therebetween to maintain a certain spacing therebetween in the direction of a central axis line B1. The first and second primary windings 11, 12 are connected in series by means of a connection means 11a. The first and second secondary windings 21, 22 are connected in series by means of a connection means 21a.

IPC Classes  ?

21.

MOVING-BODY POSITIONING DEVICE AND MOVING-BODY POSITIONING METHOD

      
Application Number JP2023018395
Publication Number 2024/095512
Status In Force
Filing Date 2023-05-17
Publication Date 2024-05-10
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Sato Hiroaki
  • Tanikawara Makoto

Abstract

There is realized a moving-body positioning device that has a simple configuration, the moving-body positioning device assessing whether a mobile station is in a stationary state without relying on the detection accuracy of an inertia sensor. This moving-body positioning device 2 comprises: a satellite signal prediction unit 26 that calculates satellite signal prediction information 19, which includes a satellite signal 10 received by a mobile station 29 and a satellite-signal 10 prediction model that is to be distributed at a current time or in the future on the basis of a correction signal 11 based on the satellite signal 10 distributed from a base station 4; a satellite signal continuity assessment unit 27 that calculates satellite signal continuity information 16, which relates to the continuity of the satellite signal 10, on the basis of the satellite signal 10 and the satellite signal prediction information 19; and a computation control unit 28 that assesses whether the mobile station 29 is in a stationary state on the basis of the satellite signal continuity information 16. In cases in which continuity of the satellite signal 10 is detected on the basis of the satellite signal continuity information 16, the computation control unit 28 determines that the mobile station 29 is in a stationary state.

IPC Classes  ?

  • G01S 19/52 - Determining velocity
  • G01C 21/28 - Navigation; Navigational instruments not provided for in groups specially adapted for navigation in a road network with correlation of data from several navigational instruments
  • G01S 19/04 - Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing carrier phase data

22.

Inkjet Printer System

      
Application Number 18279979
Status Pending
Filing Date 2022-03-01
First Publication Date 2024-05-09
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Aono, Masahiro
  • Okawa, Keisuke
  • Vuthea, Vong

Abstract

Provided is a novel inkjet printer system that can use machine learning to improve the inspection performance of a printing inspection device. The inkjet printer system includes, in the machine learning, a random test printing function unit (301) that has a function that prints a random dot arrangement that is based on various characters printed in the printing area of a printing target, and an evaluation function training function unit (302) that has a function that optimizes an evaluation function for inspecting a printed image on the basis of a captured image of the results of the printing.

IPC Classes  ?

  • B41J 29/393 - Devices for controlling or analysing the entire machine
  • B41J 2/505 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
  • G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model

23.

MULTI-STAGE SCREW COMPRESSOR

      
Application Number 18278431
Status Pending
Filing Date 2022-03-02
First Publication Date 2024-05-02
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tsuchiya, Takeshi
  • Chiba, Kotaro
  • Yabe, Toshiaki
  • Yorikane, Shigeyuki

Abstract

A multi-stage screw compressor includes a plurality of stages of compressor bodies that compress a gas in sequence, and each stage of the plurality of stages of compressor bodies has both male and female rotors that are housed revolvably in a casing in a mutually meshing state. The male and female rotors each include a rotor lobe section having a suction-side end face and a discharge-side end face on one end and the other end thereof in the axial direction and having a twisted lobe extending from the suction-side end face to the discharge-side end face. The male and female rotors in a downstream-stage compressor body as at least one certain stage, excluding an upstream-stage compressor body as the first stage, among the plurality of stages of compressor bodies are each configured such that their lead increases from the suction side in the axial direction of the rotor lobe section toward the discharge side.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids

24.

Code Generation System and Code Generation Method

      
Application Number 18278858
Status Pending
Filing Date 2022-02-25
First Publication Date 2024-05-02
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Kohiyama, Tomohisa
  • Satou, Sadao
  • Sagara, Atsushi
  • Watanabe, Yoshiyasu
  • Yokota, Hideaki
  • Ikarashi, Kazuaki
  • Kawasaki, Hiroyuki
  • Maeda, Katsunori
  • Fujiwara, Keigo
  • Hisatsune, Kazunobu

Abstract

The present invention includes: an identification code generation unit that generates, from information of a company code including a first code that uniquely identifies a management target in a part of a company in the part of the company and a second code that identifies the part of the company, an identification code including a history of the management target; a hash processing unit that hashes the identification code generated by the identification code generation unit according to a hash function and converts the hashed identification code into a meaningless code; and a reference code generation unit that generates a reference code unified for the entire company based on the meaningless code converted by the hash processing unit.

IPC Classes  ?

  • G06K 7/14 - Methods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
  • G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control (DNC), flexible manufacturing systems (FMS), integrated manufacturing systems (IMS), computer integrated manufacturing (CIM)

25.

ROTARY ELECTRIC MACHINE

      
Application Number JP2023023404
Publication Number 2024/089937
Status In Force
Filing Date 2023-06-23
Publication Date 2024-05-02
Owner
  • HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
  • HITACHI, LTD. (Japan)
Inventor
  • Asaumi Yusuke
  • Enomoto Yuji
  • Tokoi Hirooki
  • Hasegawa Yu
  • Takeuchi Keisuke
  • Sakai Toru

Abstract

Provided is a rotary electric machine in which: a stator comprises a stator core that has a plurality of slots and a bobbin that is fitted into a slot; the bobbin has flange parts that are provided to each end in the axial direction of the stator, and ridge parts that are provided to each flange part; the stator core has a protruding part that projects from an inner surface of a slot; and the bobbin is positioned by the engagement of a ridge part and the protruding part.

IPC Classes  ?

  • H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
  • H02K 3/46 - Fastening of windings on the stator or rotor structure

26.

MONITORING DEVICE, MANAGEMENT DEVICE, COMMUNICATION SYSTEM, AND RECOVERY METHOD

      
Application Number JP2023028298
Publication Number 2024/084776
Status In Force
Filing Date 2023-08-02
Publication Date 2024-04-25
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Nakano, Ryo
  • Suzuki, Tasuku
  • Kihara, Hajime

Abstract

A monitoring device according to the present invention comprises: an anomaly detection unit that monitors at least one apparatus to be monitored and detects an anomaly which has occurred in the apparatus; an anomaly notification unit that externally outputs the detected anomaly as an anomaly notification; a recovery process determination unit that, according to an anomaly type which is the type of the anomaly, determines a recovery type, which is the type of recovery, to be one of self-determination recovery in which the monitoring device determines the content of a recovery process for the apparatus and an instruction-received recovery in which the content of the recovery process is determined externally to the monitoring device; and a recovery process execution unit that executes the recovery process for the apparatus on the basis of the recovery type determined by the recovery process determination unit.

IPC Classes  ?

  • G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance

27.

DC INSULATION RESISTANCE MONITORING SYSTEM

      
Application Number JP2023007584
Publication Number 2024/079922
Status In Force
Filing Date 2023-03-01
Publication Date 2024-04-18
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Sato Takashi
  • Ishizaki Shinichi
  • Satou Shindai
  • Watanabe Yoshiyasu

Abstract

The present invention comprises: an insulation capacitor that is opened and closed by the neutral-point switch of a transformer for a ground-type gauge; a DC power supply that charges the insulation capacitor; a DC power supply switch that opens and closes the connection between the DC power supply and the insulation capacitor; an open/close control unit that controls the open/close state of each of the neutral-point switch and the DC power supply switch; and a voltage measurement unit that measures the voltage signal of the insulation capacitor.

IPC Classes  ?

  • G01R 31/52 - Testing for short-circuits, leakage current or ground faults
  • G01R 27/02 - Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
  • H02H 3/00 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection

28.

Dynamo-Electric Machine

      
Application Number 18276099
Status Pending
Filing Date 2021-12-16
First Publication Date 2024-04-18
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Ikeda, Kenji
  • Enomoto, Yuji
  • Tokoi, Hirooki
  • Nakahara, Mizuki
  • Mikami, Hiroyuki
  • Suzuki, Toshifumi
  • Sakai, Toru
  • Amaike, Masaru
  • Tsuji, Yuji

Abstract

A dynamo-electric machine comprising: a stator core with plurality of slots, a coil covered with insulated conductor wire, wherein the coil comprising plurality of storages stored in the slots and plurality of coil ends that are outside of the slots, conductor of coil end close to the conductor of the heterophase coil having insulating materials at only one of the surfaces, either the inner diameter surface close to the conductor of the heterophase coil or outer diameter surface of the heterophase coil.

IPC Classes  ?

  • H02K 3/40 - Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges

29.

INKJET RECORDING DEVICE, AND INKJET RECORDING DEVICE ABNORMALITY DIAGNOSIS METHOD

      
Application Number JP2022037213
Publication Number 2024/075194
Status In Force
Filing Date 2022-10-05
Publication Date 2024-04-11
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Maeda Akira
  • Okamoto Yusuke
  • Moriai Takuya

Abstract

The present invention provides an inkjet recording device and an inkjet recording method that are capable of not only quickly detecting at least leakage of ink to the outside but also detecting whether ink control mechanism parts related to ink circulation are operating normally. A control unit 20 executes a printing mode for executing printing on a printing target and a standby mode for avoiding printing on the printing target. The standby mode includes an ink circulation processing sequence for driving ink control mechanism parts 117, 207 to supply ink from an ink container 201 to an ink path for recollection, and a standby processing sequence for avoiding driving the ink control mechanism parts. The control unit is characterized by: determining that there is an abnormal state, where the ink control mechanism parts are not operating normally, if no increase is detected in the liquid level by a liquid level sensor 204 in the ink circulation processing sequence; determining that there is an abnormal state, where ink leakage has occurred in the ink path, if a decrease is detected in the liquid level by the liquid level sensor in the standby processing sequence; and issuing an alarm to a notification means 105 if the control unit determines that there is an abnormal state.

IPC Classes  ?

30.

COMPRESSED AIR ENERGY STORAGE DEVICE AND HEAT PUMP DEVICE

      
Application Number JP2023020095
Publication Number 2024/075336
Status In Force
Filing Date 2023-05-30
Publication Date 2024-04-11
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Koyama Masaki
  • Chiba Kotaro
  • Nagata Shuhei

Abstract

This compressed air energy storage device comprises: a compressor that is driven by an electric motor and compresses air; a first heat exchanger that heats a heat storage medium through heat exchange with compressed air compressed by the compressor; a pressure accumulating tank that stores compressed air that has been heat-exchanged by the first heat exchanger; an expander that is driven by the compressed air stored in the pressure accumulating tank; a power generator driven by the expander; a second heat exchanger that heats compressed air, which flows into the expander, through heat exchange with the heat storage medium that has been heated by the first heat exchanger; and a heat pump device for absorbing heat from the heat storage medium that has been heat-exchanged by the second heat exchanger and dissipating heat to the compressed air that drives the expander.

IPC Classes  ?

  • F02C 6/16 - Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
  • F25B 7/00 - Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit

31.

HOIST, HOIST SYSTEM, AND STATUS INFERENCE SYSTEM

      
Application Number JP2023018980
Publication Number 2024/070042
Status In Force
Filing Date 2023-05-22
Publication Date 2024-04-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Momoi Yasuyuki
  • Watanabe Michiharu
  • Ieshige Koji
  • Oikawa Yugo
  • Tagami Tatsuya
  • Kurosawa Takafumi
  • Momose Takaya

Abstract

Provided is a hoist that includes a motor and controls the motor to lift and lower a suspended load. The hoist comprises: an operation information acquisition unit which acquires operation information pertaining to the motor; and a status inference unit which infers the status of the hoist on the basis of operation information that has been acquired by the operation information acquisition unit and a status inference formula that has been trained so as to be able to infer the status of the hoist, wherein the status inference formula is constituted by a common inference part which is independent of the model of hoist and model-specific inference parts which differ from one model of hoist to another.

IPC Classes  ?

  • B66D 1/46 - Control devices non-automatic electric
  • B66C 13/16 - Applications of indicating, registering, or weighing devices
  • B66C 13/22 - Control systems or devices for electric drives
  • B66C 13/46 - Position indicators for suspended loads or for crane elements

32.

COMMUNICATION DEVICE AND FIRMWARE UPDATE SYSTEM

      
Application Number 18285561
Status Pending
Filing Date 2022-01-18
First Publication Date 2024-04-04
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Shirane, Kazuto
  • Shimoda, Kenji
  • Kihara, Hajime

Abstract

A communication device comprising, a local communication unit communicating with an apparatus, a memory unit storing firmware for the apparatus, if the history of activation and deactivation as an external storage terminal by the apparatus is determined to be a predefined sequence, communication device that is not activated as an external storage terminal or that operates in such a way that the firmware is not visible from the apparatus.

IPC Classes  ?

33.

CONTROL SYSTEM

      
Application Number JP2023028803
Publication Number 2024/070243
Status In Force
Filing Date 2023-08-07
Publication Date 2024-04-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Sudoh, Masayoshi

Abstract

This control system comprises: a control unit which has a Web server and two or more network ports; and a calculation unit which has a Web server and a network port, wherein the two or more network ports of the control unit include first and second network ports, the first network port of the control unit and the network port of the calculation unit are connected to a first network segment, which is a closed network segment to which elements other than the control unit and the calculation unit are not connected, and the control unit transmits data, which is received from the interface unit, to the calculation unit and displays a Web server screen of the calculation unit on a Web server screen of the control unit.

IPC Classes  ?

  • H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
  • G05B 19/05 - Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts

34.

LIVE WIRE DIAGNOSTIC SYSTEM AND LIVE WIRE DIAGNOSTIC METHOD

      
Application Number JP2023009569
Publication Number 2024/062653
Status In Force
Filing Date 2023-03-13
Publication Date 2024-03-28
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Nukaga Jun
  • Satou Shindai

Abstract

This diagnostic device compares the frequency characteristics of a current transformer at the start of the operation and the frequency characteristics of the current transformer after the start of the operation, and, when an amount of change thereof has exceeded a prescribed threshold value, detects deterioration of ground insulation of a device.

IPC Classes  ?

  • G01R 31/52 - Testing for short-circuits, leakage current or ground faults
  • G01R 27/18 - Measuring resistance to earth
  • G01R 31/00 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
  • G01R 31/56 - Testing of electric apparatus

35.

INKJET RECORDING DEVICE

      
Application Number JP2022035373
Publication Number 2024/062596
Status In Force
Filing Date 2022-09-22
Publication Date 2024-03-28
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Kanuma Yu
  • Arima Takahiro
  • Okamoto Yusuke
  • Miyao Akira

Abstract

With respect to an inkjet recording device in which a pigment-based ink is used, provided is an ink device that can suppress ink adherence in an ink path and precipitation of pigment components in an ink container, which occur when printing is not implemented for a long period of time, and can jet the pigment-based ink in a short period of time when printing is resumed. In this inkjet recording device in which a pigment-based ink is used, a control unit 7 executes a printing mode in which a printing operation is implemented, and a suspension mode in which a printing operation is not implemented. In the suspension mode, the control unit 7 forcibly causes stirring of a pigment-based ink 68A in an ink container 31, and ink circulation (S300) in an ink circulation path that does not include a printing head, or ink circulation (S400) in an ink circulation path that includes the printing head. Thereby, ink adherence in the ink circulation path and precipitation of pigment components in the ink container, which occur when printing is not implemented for a long period of time, can be suppressed, and the pigment-based ink can be jetted in a short period of time when printing is resumed.

IPC Classes  ?

  • B41J 2/18 - Ink recirculation systems
  • B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
  • B41J 2/08 - Ink jet characterised by jet control for many-valued deflection charge-control type

36.

Power Conversion Device

      
Application Number 18274509
Status Pending
Filing Date 2022-01-24
First Publication Date 2024-03-21
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tobari, Kazuaki
  • Iwase, Yuta
  • Taguchi, Yoshiyuki

Abstract

A power conversion device comprising, a power converter that outputs signal to the motor to vary the motor's output frequency, output voltage and output current and control unit that controls the power converter, the control unit is, calculating the first power from the output voltage and output current, calculating the second power from the output current, electrical circuit parameters and frequency estimates, calculating the first phase error estimate so that the first power follows the second power in the first frequency domain, calculating the second phase error estimate different from the first frequency domain in a second frequency domain, controlling the frequency estimates so that the first phase error estimate or the second phase error estimate follows the command value of the phase error estimate.

IPC Classes  ?

  • H02P 21/18 - Estimation of position or speed
  • H02P 21/24 - Vector control not involving the use of rotor position or rotor speed sensors
  • H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

37.

POWER CONVERSION DEVICE AND METHOD FOR DETECTING ELECTRIC SYSTEM ANOMALY BY POWER CONVERSION DEVICE

      
Application Number JP2023019524
Publication Number 2024/057625
Status In Force
Filing Date 2023-05-25
Publication Date 2024-03-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Arao Yusuke

Abstract

In this power conversion device, the voltage of three‐phase AC input system power supply is transformed by a transformer and is outputted as three‐phase AC to a load power supply system. A control calculation part has a current detection part that outputs a current detected by a current detector as current data, refers to the current data outputted from the current detection part, and, on the basis of a current flowing through each phase of the three‐phase AC on the secondary side of the transformer or a current flowing through each phase of the three‐phase AC flowing to the load power supply system, performs anomaly diagnosis on the power supply system. Further, the control calculation part has a voltage detection part, and, on the basis of a voltage detected by the voltage detection part and on the basis of a voltage in each phase of the three-phase AC on the secondary side of the transformer or a voltage in each phase of the three-phase AC to the load power supply system, performs anomaly diagnosis on the power supply system. Accordingly, in a power conversion device in which the voltage of an input system power supply is transformed by a transformer and is outputted to a load power supply system, current/voltage anomaly in an electric system including the transformer is detected.

IPC Classes  ?

  • H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

38.

POWER REGENERATION CONVERTER

      
Application Number JP2023020666
Publication Number 2024/057633
Status In Force
Filing Date 2023-06-02
Publication Date 2024-03-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Orui Susumu
  • Watanabe Masayuki
  • Matsunaga Shunsuke

Abstract

Provided is a power regeneration converter that is disposed between an inverter which outputs a three-phase alternating current to an electric motor and a three-phase alternating current power source which is an input system, and that supplies induced electric power generated by the electric motor to the three-phase alternating current power source, wherein a control unit calculates a three-phase alternating current voltage target value for performing PWM on the basis of a three-phase alternating current voltage of the input system detected by an alternating current voltage detection unit, a three-phase alternating current detected by an alternating current detection unit, and a direct current voltage between the inverter and the power regeneration converter detected by a direct current voltage detection unit, and controls the direct current voltage between the inverter and the power regeneration converter on the basis of the calculated three-phase alternating current voltage target value. Thus, in a power conversion device, it is possible to maintain an output direct current voltage at a suitable value, and to reduce an increase in overmodulation and noise, an increase in switching loss, heat generation in a filter including a reactor, and an increase in insulation degradation of a load device.

IPC Classes  ?

  • H02M 7/12 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

39.

DATA TRANSFER SYSTEM AND METHOD

      
Application Number JP2023030623
Publication Number 2024/057872
Status In Force
Filing Date 2023-08-24
Publication Date 2024-03-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Imai, Mitsuhiro

Abstract

This data transfer system is provided with first and second transfer units which perform data transfer via a network between first and second memory regions at a predetermined transfer cycle. A control device for a device to be controlled reads a factor data set from the second memory region for control at each predetermined control cycle, and writes, into the second memory region, a control data set based on the factor data set. During factor transfer at each predetermined transfer cycle, the first and second transfer units transfer the factor data set from the first memory region to the second memory region. During control transfer at each predetermined transfer cycle, the control data set is transferred from the second memory region to the first memory region. In the network, the delay time differs depending on the transfer cycle. The predetermined transfer cycle is a cycle shorter than the predetermined control cycle, and is one transfer cycle that falls within an allowable delay time.

IPC Classes  ?

  • G06F 13/38 - Information transfer, e.g. on bus
  • G05B 19/05 - Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts

40.

COMPRESSOR

      
Application Number 18273406
Status Pending
Filing Date 2022-02-07
First Publication Date 2024-03-21
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Watabe, Yusuke
  • Saito, Hiroaki

Abstract

A compressor includes: a housing; a compressor body to compress gas; a motor to drive the compressor body; a control board to control the motor; and a tank to store the gas outputted from the compressor body, wherein the housing has: a machine chamber storing the compressor body and the motor; a B-chamber having piping to connect the compressor body with the tank; an A-chamber storing the tank; an A-partition separating the machine chamber from the A-chamber and B-chamber; and a B-partition between the A-chamber and the B-chamber, the A-chamber has an air intake port to introduce ambient air, the A-partition has an A-vent as a hole to communicate between the machine chamber and the A-chamber, and a suction port of the compressor body is located in vicinity to the A-vent.

IPC Classes  ?

  • F04C 29/04 - Heating; Cooling; Heat insulation
  • F04B 41/02 - Pumping installations or systems specially adapted for elastic fluids having reservoirs
  • F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

41.

Rotary Electric Machine

      
Application Number 18276090
Status Pending
Filing Date 2021-11-24
First Publication Date 2024-03-21
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tokoi, Hirooki
  • Nakahara, Mizuki
  • Suzuki, Toshifumi
  • Amaike, Masaru
  • Takahashi, Shuuichi
  • Yoneoka, Yasuei
  • Sakai, Toru

Abstract

A rotary electric machine (1000) including: a rotor (200); a stator (100) surrounding a periphery of the rotor (200); a first recessed portion (133) disposed in an inner circumferential surface of a back yoke (130) of the stator (100), and extending in an axial direction of the stator (100); and a tooth (120) having one end fitted in the first recessed portion (133), a clearance formed between the first recessed portion (133) and the one end of the tooth (120) fitted in the first recessed portion (133) being smaller in a circumferential direction of the stator (100) than in a radial direction of the stator (100).

IPC Classes  ?

  • H02K 1/14 - Stator cores with salient poles
  • H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
  • H02K 15/12 - Impregnating, heating or drying of windings, stators, rotors or machines

42.

PACKAGED GAS COMPRESSOR

      
Application Number JP2023019183
Publication Number 2024/047969
Status In Force
Filing Date 2023-05-23
Publication Date 2024-03-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Tokino Yugo
  • Harashima Toshikazu
  • Oshiro Ryusuke
  • Ota Naohiro
  • Kajie Yuta

Abstract

This packaged gas compressor comprises a compressor main body, a cooling fan, an air-cooled heat exchanger, and a housing that houses the compressor main body, the cooling fan, and the air-cooled heat exchanger. The housing includes a suction port for cooling air on a side surface surrounding constituent equipment. The compressor main body is disposed in a lower portion in the housing. The cooling fan is disposed above the compressor main body with a rotational axis of the cooling fan being orthogonal to a height direction of the housing. The heat exchanger is disposed at the position of a suction side of the cooling fan. The suction port is provided overlapping the compressor main body in a height direction of the housing and provided, for the heat exchanger and the cooling fan, closer to the cooling fan than to the heat exchanger. The compressor main body is disposed, in an extension direction of the rotational axis of the cooling fan, overlapping an area between the heat exchanger and an opposing surface of the side surfaces of the housing that opposes a cooling air inflow side of the heat exchanger.

IPC Classes  ?

  • F04B 39/06 - Cooling; Heating; Prevention of freezing
  • F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids
  • F04C 29/04 - Heating; Cooling; Heat insulation

43.

ELECTRIC CHAIN BLOCK

      
Application Number JP2023030422
Publication Number 2024/048403
Status In Force
Filing Date 2023-08-24
Publication Date 2024-03-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Yamano Kyosuke

Abstract

Provided is an electric chain block that can correspond to an installation environment in which a short closeness dimension is required from one chain bucket and to an action environment in which the chain bucket and a load interfere with one another. In the present invention, a chain bucket comprising a fixed part that is attached and fixed to a chain block body and a storage part that stores a load chain is attached to the chain block body in a first attachment state in which a closeness dimension is short in lieu of the vertical-direction height of the bottom surface of the chain bucket from a floor surface being low. Additionally, in a state in which the chain bucket is rotated 180° from the first attachment state about the fixed part, the chain bucket is attached in a second attachment state in which the vertical-direction height of the bottom surface of the chain bucket from the floor surface is high in lieu of the closeness dimension being long.

IPC Classes  ?

44.

Power Converter Apparatus

      
Application Number 18273844
Status Pending
Filing Date 2021-11-10
First Publication Date 2024-03-07
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tobari, Kazuaki
  • Ohashi, Hironori
  • Watanabe, Hiroshi
  • Ohya, Masato

Abstract

A power converter apparatus comprising: a power converter that outputs signal to the magnet motor to vary the output frequency, output voltage and output current of the magnet motor, a control unit controls the power converter, wherein the control unit calculating the gain of the magnetic flux component of the q-axis, which varies with the phase of the magnet motor, calculating the d-axis induced voltage command value based on a value of the induced voltage coefficient, frequency estimates or frequency command value, and the gain of the flux component of the q-axis.

IPC Classes  ?

  • H02P 21/26 - Rotor flux based control
  • H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage
  • H02P 21/22 - Current control, e.g. using a current control loop

45.

AIR COMPRESSION DEVICE

      
Application Number JP2022032716
Publication Number 2024/047780
Status In Force
Filing Date 2022-08-31
Publication Date 2024-03-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Mizuno Mikio
  • Suzuki Tomoo
  • Anzai Yoshio

Abstract

Provided is an air compression device comprising a buffer tank that is provided at a prescribed position of an air return pipe and temporarily stores return air.

IPC Classes  ?

46.

COMPRESSOR

      
Application Number JP2023020890
Publication Number 2024/047989
Status In Force
Filing Date 2023-06-05
Publication Date 2024-03-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Narisawa Nobuyuki
  • Sudo Kosuke

Abstract

Provided is a compressor (10) in which a piston (33) supported by a connecting rod (32) reciprocates while swinging inside a cylinder (22), wherein the piston (33) comprises: a resin (36) constituting at least a surface (33a) contacting an inner peripheral wall (22a) of the cylinder (22) and a surface (33c) on a compression chamber (22b) side; an insert component (41) embedded in the resin (36); and a penetration hole (41d) provided in the insert component (41) and having the resin (36) filled therein.

IPC Classes  ?

  • F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

47.

MONITORING EQUIPMENT, MONITORING METHOD

      
Application Number JP2023028024
Publication Number 2024/048167
Status In Force
Filing Date 2023-07-31
Publication Date 2024-03-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Kono, Masashi
  • Nomura, Yusuke
  • Nakagawa, Yuusuke
  • Murakami, Masanori

Abstract

This monitoring equipment monitors a plurality of devices with maintenance contracts, and is provided with: an input unit that receives target identification data, which is data for identifying a target device that is a device to be processed; an acquisition unit that acquires operating data of the target device; a proposal content determination unit that calculates a new maintenance contract type, which is a type of new maintenance contract suitable for the target device, on the basis of a current maintenance contract type, which is the type of the current maintenance contract for the target device, and the operating data of the target device; and an output unit that outputs the new maintenance contract type calculated by the proposal content determination unit.

IPC Classes  ?

48.

EARLY SIGN DETECTION SYSTEM AND EARLY SIGN DETECTION METHOD

      
Application Number JP2023030621
Publication Number 2024/048428
Status In Force
Filing Date 2023-08-24
Publication Date 2024-03-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Nojiri, Tohru
  • Takano, Masahiko
  • Nakagawa, Yuusuke
  • Ojima, Masayoshi

Abstract

In order to improve the accuracy of detection of early signs of cooling performance degradation, this early sign detection system comprises: a pre-processing unit for acquiring chronological operational data of a device to be cooled that has a temperature elevation source and a cooling unit for cooling the temperature elevation source, and extracting a feature quantity from the operational data; and an early sign detection unit for diagnosing cooling performance on the basis of an output obtained by inputting a feature quantity extracted from diagnostic operational data to an early sign detection model constructed using training data generated on the basis of a feature quantity extracted from training operational data, and on the basis of labels indicating a state of cooling performance by the cooling unit. The early sign detection model has been constructed with the use of training data generated on the basis of a feature quantity extracted from operational data including operational states falling under ongoing operation and ongoing standby. When diagnosing cooling performance, the early sign detection unit inputs, to the early sign detection model, a feature quantity extracted from the operational data including operating states relevant only to ongoing operations.

IPC Classes  ?

49.

PROGRAM UPDATE METHOD FOR THE GAS COMPRESSOR SYSTEM

      
Application Number 18261976
Status Pending
Filing Date 2021-12-21
First Publication Date 2024-02-29
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Uchiki, Ryosuke
  • Ikemura, Yuuji

Abstract

A method of updating the program of a gas compressor system that supplies at least one of pressure and flow rate of gas discharged from the discharge piping system based on predetermined values comprising: the management device obtaining an update program, updating a program for an in-service compressor of the plurality of gas compressors whose program is to be updated, and driving other gas compressors of the plurality of gas compressors, which are different from the operating compressor whose program is to be updated, in accordance with the predetermined value.

IPC Classes  ?

  • F04B 49/06 - Control using electricity
  • F04C 28/02 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel
  • G06F 8/65 - Updates

50.

ELECTRIC MOTOR CONTROL DEVICE

      
Application Number 18271290
Status Pending
Filing Date 2021-12-23
First Publication Date 2024-02-29
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Zhang, Yu
  • Takano, Yuuri
  • Takada, Hideto

Abstract

A electric motor control device comprising a converter section converting AC voltage to DC voltage, an inverter section converting DC voltage from the converter section to AC voltage and supplying said AC voltage to electric motor, an inverter control unit controlling said inverter section, a current detection unit detecting the current flowing in said electric motors and a power calculation unit estimating the temperature of said electric motors from said detected current, calculating the resistance of said electric motors from said estimated temperature, and calculating the copper loss from said calculated resistance.

IPC Classes  ?

  • H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage
  • H02P 25/022 - Synchronous motors
  • H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

51.

Motor Control Device

      
Application Number 18271542
Status Pending
Filing Date 2021-12-14
First Publication Date 2024-02-29
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Matsubara, Mitsuru
  • Takano, Yuuri
  • Uei, Yusuke
  • Kondo, Terutomo
  • Yanada, Tetsuo
  • Tobari, Kazuaki

Abstract

Motor controller device comprising a position control system that controls the position of a machine end connected to a motor, wherein the motor controller device receiving the first speed directive from the high-level controller, stored in the position control system to output a motor axis position response to the high-level controller, comprising speed controller and vibration controller in speed control system, wherein the vibration controller in speed control system comprising: a position command estimator that calculates an estimate of the location directive based on the first speed directive and the motor axis position response, a parallel vibration damping controller that extracts the frequency components that excite vibration of the machine end included in the first speed directive based on the estimated value of the location directive, and outputs the extracted frequency components. The parallel vibration damping controller outputs the extracted frequency components, a phase regulator to improve the response delay caused by the parallel vibration damping controller, a first unit converter that converts the output of the phase regulator into the dimension of velocity, and an arithmetic unit wherein the arithmetic unit, the output of the parallel vibration damping controller is subtracted from the first speed directive to remove from the first speed directive the frequency components that excite vibration at the machine end, and output as a second speed directive, the first real speed directive as an output of the vibration controller in speed control system based on the output of the first unit converter and the second speed directive, uses the first real speed directive as a command for the speed controller.

IPC Classes  ?

  • H02P 23/04 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
  • H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
  • H02P 23/18 - Controlling the angular speed together with angular position or phase

52.

Screw Compressor

      
Application Number 18273850
Status Pending
Filing Date 2022-03-28
First Publication Date 2024-02-29
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tsuchiya, Takeshi
  • Chiba, Kotaro
  • Nagata, Shuhei
  • Yorikane, Shigeyuki
  • Morita, Kenji
  • Kajie, Yuta

Abstract

A screw compressor for compressing a working medium sucked through a suction opening and discharging the compressed working medium through a delivery opening, wherein the screw compressor includes: a male rotor and a female rotor that rotate while meshing with each other; a casing that houses the male rotor and the female rotor and is provided with a bore which forms a working chamber designed, together with the male rotor and the female rotor, to compress the working medium; a drive unit that rotationally drives at least one of the male rotor and the female rotor; a working chamber closing unit that forms a suction port for sucking the working medium into the working chamber and closes the working chamber when the working chamber reaches a specified capacity; and a suction space that connects the suction opening and the suction port to allow communication therebetween, wherein an open space that connects the suction opening and the suction port to allow communication therebetween is provided between a shaft of the male rotor and a shaft of the female rotor on an opposite side of the male rotor and the female rotor relative to the suction port.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

53.

LIQUID-SUPPLY-TYPE SCREW COMPRESSOR

      
Application Number JP2023020259
Publication Number 2024/038656
Status In Force
Filing Date 2023-05-31
Publication Date 2024-02-22
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Yorikane, Shigeyuki
  • Yamamoto, Kentaro

Abstract

In this liquid-supply-type screw compressor, a driving mechanism slidably drives a valve body by means of: a first biasing force due to an elastic force of an elastic body in a direction from a first valve body position to a third valve body position; and a second biasing force due to the discharge pressure of a discharge gas in a direction from the third valve body position to the first valve body position. The driving mechanism: slidably drives the valve body to the third valve body position when a discharge pressure is no greater than a first discharge pressure where a cooling liquid pressure is a first pressure, and is greater than a second discharge pressure where the cooling liquid pressure is a second pressure; slidably drives the valve body to a second valve body position when the discharge pressure is greater than the first discharge pressure and smaller than a predetermined pressure greater than the first discharge pressure; and slidably drives the valve body to the first valve body position when the discharge pressure is at least the predetermined pressure.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 29/02 - Lubrication; Lubricant separation 
  • F04C 29/04 - Heating; Cooling; Heat insulation

54.

Motor Control Device and Motor Control Method

      
Application Number 17766628
Status Pending
Filing Date 2020-07-10
First Publication Date 2024-02-15
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Uei, Yusuke
  • Kondo, Terutomo
  • Takano, Yuuri
  • Yanada, Tetsuo
  • Takada, Hideto

Abstract

A motor control device that supplies electric power to a motor is disclosed. The motor control device is provided with a storage unit to store position offset data and information of a machine origin position of the motor. The motor control device generates a command value of a position after offset by using an externally input position command and the position offset data and coverts electric power to be supplied to the motor based on the command value of a position after offset and position information that is input from an encoder. The position offset data is data in which offset positions and offset quantities have been recorded in a mapping relation. A start position of the offset positions differs from the machine origin position.

IPC Classes  ?

  • G05B 19/404 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia

55.

ROTATING ELECTRICAL MACHINE

      
Application Number 18269333
Status Pending
Filing Date 2021-12-16
First Publication Date 2024-02-15
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Fujisawa, Yukinari
  • Kawashima, Takuya

Abstract

Rotating electrical machine comprising: a housing storing a stator and a rotor, a fan cover covers the housing from the outside, an end bracket attached to the axial end face of the housing, a cooling fan installed in the fan cover, wherein output shaft side end face of the fan cover has a convex portion extending in the axial direction, the end bracket on the output shaft side has a concave first exhaust opening part relative to the convex part of the fan cover, the end bracket on the anti-output shaft side has a second exhaust opening part on the opposite side of the first exhaust opening part.

IPC Classes  ?

  • H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
  • H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
  • H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines

56.

Screw Compressor

      
Application Number 18267289
Status Pending
Filing Date 2021-11-12
First Publication Date 2024-02-15
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Chiba, Kotaro
  • Takano, Masahiko
  • Yorikane, Shigeyuki
  • Morita, Kenji
  • Kajie, Yuta

Abstract

A casing of a screw compressor has a delivery inner wall face facing delivery end faces of a male rotor and a female rotor. The delivery inner wall face of the casing has a shield area that shields at least a part of a track of an axial fluid communication path, which is a clearance that periodically occurs at the delivery end faces according to variation of intermeshing of the male and female rotors upon rotation thereof and is bounded by trailing flanks of the male and female rotors. The shield area of the casing is provided with a groove group made up of a plurality of grooves having longitudinal directions. The grooves of the groove group are juxtaposed in the circumferential direction of at least one rotor of the male and female rotors and are arranged such that their sides extending in the longitudinal directions are disposed adjacent to each other. Each groove of the groove group is configured such that its longitudinal direction oriented from the inner circumferential side of the one rotor toward the outer circumferential side is inclined with respect to the radial direction of the one rotor in the same direction as the rotational direction of the one rotor.

IPC Classes  ?

  • F04C 2/16 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

57.

DEHUMIDIFYING DEVICE

      
Application Number JP2023016541
Publication Number 2024/034201
Status In Force
Filing Date 2023-04-26
Publication Date 2024-02-15
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Matsuzaka Takehiro
  • Takano Masahiko

Abstract

Provided is a dehumidifying device that can effectively utilize compressed air used for reproduction of adsorbent. The dehumidifying device comprises: adsorbent containers 2A, 2B in which adsorbent is contained; switching valves 3A to 3E connected to the adsorbent containers 2A, 2B; a control device 4 that switches the process of each adsorbent container between an absorbing process and a reproduction process by controlling the switching valves 3A to 3E; and an air release path 9 that releases the compressed air flowing out of the adsorbent container in the reproduction process. The air release path 9 has a heat collector 16 that heats a fluid with the heat of the compressed air flowing out of the adsorbent container in the reproduction process.

IPC Classes  ?

58.

MOTOR CONTROL DEVICE AND METHOD

      
Application Number JP2023018479
Publication Number 2024/034211
Status In Force
Filing Date 2023-05-17
Publication Date 2024-02-15
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Kondo, Terutomo
  • Uei, Yusuke
  • Takano, Yuuri

Abstract

Provided is a technique for a motor control device, said technique achieving the adjustment of control parameters even between a higher-level system and a lower-level system. A controller 10 of a higher-level system1 inputs a higher-level control deviation A2 based on the calculations of a higher-level control command A1 and a higher-level control response A4 to a first controller 51 and outputs a servo control command A3 based on a first control gain. A servo amplifier 20 that is the motor control device has a second controller 52, a power converter 23, and a control gain estimator 27. The motor control device inputs a signal based on the servo control command A3 and the higher-level control response A4 to the second controller 52, inputs a signal output from the second controller 52 to the power converter 23, and supplies a signal output from the power converter 23 to a motor 30. The control gain estimator 27 receives the servo control command A3 and the higher-level control deviation A2 or the higher-level control command A1 and estimates the first control gain.

IPC Classes  ?

  • H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors

59.

SCREW COMPRESSOR AND METHOD FOR ASSEMBLING SAME

      
Application Number JP2023018614
Publication Number 2024/034213
Status In Force
Filing Date 2023-05-18
Publication Date 2024-02-15
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Nozaki Tsutomu
  • Tsuchiya Takeshi
  • Chiba Kotaro
  • Yorikane Shigeyuki

Abstract

This screw compressor comprises male and female rotors that are accommodated in a casing so as to be in mesh with each other and be capable of rotating about parallel rotational axes. The male and female rotors each include a rotor teeth portion having spiral teeth, a suction-side shaft portion, and a discharge-side shaft portion. The rotor teeth portions of the male and female rotors are each configured such that a lead angle changes. Each of the male and female rotors has, on either the suction-side shaft portion or the discharge-side shaft portion, an engaging portion that engages with a positioning jig used during assembly in order to restrict the distance between the rotational axes of the male and female rotors.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups

60.

OIL-COOLED SCREW COMPRESSOR

      
Application Number JP2023020134
Publication Number 2024/034235
Status In Force
Filing Date 2023-05-30
Publication Date 2024-02-15
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Kajie Yuta
  • Morita Kenji
  • Yorikane Shigeyuki

Abstract

This oil-cooled screw compressor is provided with: a compressor body (1) including a pair of screw rotors (11); and a gear room (24) that accommodates a power transmission gear (21) to transmit rotation to the pair of screw rotors (11) and has an oil discharge port (24a) for lubricant on a bottom surface thereof. The oil discharge port (24a) communicates with an oil inflow port (12af) opening into a casing (12) so as to be positioned between suction side end surfaces (11ab) and (11bb) of the pair of screw rotors (11) and a suction side inner wall surface (12ae) opposed to the suction side end surfaces (11ab) and (11bb). The casing (12) has a downslope inclination part (12ah) descending toward a bottom part (12ag) of the casing (12) opposed to a lower end of one of the pair of screw rotors (11). The oil inflow port (12af) is provided at a position higher than the bottom part (12ag) of the casing (12) in the inclination part (12ah).

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 29/02 - Lubrication; Lubricant separation 

61.

INK JET RECORDING SYSTEM

      
Application Number JP2022029913
Publication Number 2024/029025
Status In Force
Filing Date 2022-08-04
Publication Date 2024-02-08
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Okawa Keisuke
  • Takahashi Takahiro

Abstract

Provided is an ink jet recording system that, by using a sequential management computer, can acquire backup data of an ink jet recording device without relying on an external storage medium. An ink jet recording device 600 and a server 209, and the server 209 and a management computer 15, are connected by a communication network 214. Every occurrence of a first prescribed time, or as requested by the server 209, backup data of the ink jet recording device 600 is transferred to a readable/writable server memory of the server 209, and every occurrence of a second prescribed time, or as requested by the management computer 15, the backup data is transferred from the memory of the server 209 to a readable/writable management memory 321 of the management computer.

IPC Classes  ?

  • B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
  • B41J 5/48 - Character or syllable selection controlled by recorded information characterised by the kind of storage of recorded information the storage being on external storages

62.

EMBEDDED-MAGNET-TYPE ROTARY ELECTRIC MOTOR AND ELECTRIC DEVICE

      
Application Number JP2023024805
Publication Number 2024/029256
Status In Force
Filing Date 2023-07-04
Publication Date 2024-02-08
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Ishige Hikaru
  • Tsuji Yuji
  • Kawashima Takuya
  • Fujisawa Yukinari
  • Shibamoto Yuki
  • Furuhashi Takahiro

Abstract

An embedded-magnet-type rotary electric motor comprising a stator and a rotor that has a rotor core having a plurality of permanent magnets embedded in the interior thereof, the rotor being retained so as to be capable of rotating a rotation axis on the inside of the stator, wherein: the plurality of permanent magnets are retained so as to be spaced from each other in the circumferential direction in the outer peripheral portion of the rotor core, and have magnetic poles at both ends thereof in the circumferential direction; the rotor core has a plurality of lightening holes that are spaced from each other in the circumferential direction on the rotation axis side of the plurality of permanent magnets; each of the plurality of lightening holes has a bottom wall surface portion that extends in the circumferential direction on the rotation axis side, an outer peripheral wall surface portion on the outer peripheral side, and side wall surface portions that connects the bottom wall surface portion and the outer peripheral wall surface portion; and the outer peripheral wall surface portion has an inclined wall surface portion that approaches the rotation axis over the interval from the central portion toward a magnetic pole side of one permanent magnet among the plurality of permanent magnets.

IPC Classes  ?

  • H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

63.

PRINTER SYSTEM AND CONTROL METHOD FOR PRINTER SYSTEM

      
Application Number JP2023018961
Publication Number 2024/029164
Status In Force
Filing Date 2023-05-22
Publication Date 2024-02-08
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Aono Masahiro
  • Okawa Keisuke
  • Kurihara Hiroko

Abstract

This printer system is provided with a plurality of printers that have printing mechanism unit control software that controls a printing drive unit through a GUI displayed on a display operation unit, and the plurality of printers are connected via a network. One of the plurality of printers is an operating-side printer that operates the other printers. The operating-side printer is provided with a GUI file for the printer itself and control software that issues commands to the printing mechanism unit control software. A GUI file and control software for the operated-side printers are constructed, and the operated-side printers are operated to run on the basis of the constructed GUI file and control software for the operated-side printers.

IPC Classes  ?

  • B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
  • B41J 29/42 - Scales and indicators, e.g. for determining side margins
  • G06F 3/048 - Interaction techniques based on graphical user interfaces [GUI]

64.

INKJET RECORDING DEVICE

      
Application Number 18276138
Status Pending
Filing Date 2021-12-06
First Publication Date 2024-02-01
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Kisanuki, Shoichiro
  • Kato, Manabu
  • Sato, Koma
  • Sugii, Taisuke

Abstract

A novel inkjet recording device that allows occurrence of scattering to be suppressed without limiting the size of a printed character (font size) is provided. The novel inkjet recording device is so configured that a deflection positive electrode, a deflection negative electrode, or both the deflection positive electrode and the deflection negative electrode constituting a print head can be moved along a direction of ejection of ink droplets in correspondence with the size of a printed character.

IPC Classes  ?

65.

INKJET RECORDING SYSTEM

      
Application Number JP2023018484
Publication Number 2024/024222
Status In Force
Filing Date 2023-05-17
Publication Date 2024-02-01
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Taniguchi Kazuhiko
  • Kido Mihoko
  • Kawano Takashi

Abstract

The purpose of the present invention is to provide an inkjet recording system that can promote reduction of environmental load. To achieve this purpose, the present invention is an inkjet recording system comprising an inkjet recording device and a server, communication being enabled between the inkjet recording device and the server, wherein the server, on the basis of information detected by the inkjet recording device or information inputted using a terminal device that can communicate with the server, calculates points to be imparted when an action that contributes to reducing greenhouse gas emissions is performed on the inkjet recording apparatus.

IPC Classes  ?

  • B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
  • B41J 2/01 - Ink jet
  • B41J 2/06 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
  • B41J 2/09 - Deflection means

66.

CONTROL SYSTEM AND METHOD

      
Application Number JP2023020367
Publication Number 2024/024264
Status In Force
Filing Date 2023-05-31
Publication Date 2024-02-01
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Yazaki, Toru
  • Wakana, Hironori
  • Ojima, Masayoshi
  • Yamazaki, Masahiro
  • Shimoda, Kenji
  • Sudoh, Masayoshi
  • Maeno, Yuki
  • Soga, Mitsuru

Abstract

In the present invention, a control system including a control program and an information program includes a management program and a parameter set of the information program. The control program is a program that performs scanning (processing that controls a controlled device and has real-time qualities) in a control period. The control program, in the control period, transmits a control command that is a signal indicating a code associated with an information program to be activated. The management program receives the control command, identifies the information program to be activated that corresponds to the code indicated by the received control command, reads the parameter set of the information program to be activated, generates an activation signal associated with the parameter set that has been read, and outputs the generated activation signal to the information program to be activated.

IPC Classes  ?

  • G05B 19/05 - Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
  • G06F 9/445 - Program loading or initiating

67.

Information Processing Device, Information Processing System, and User Interface Providing Method

      
Application Number 18039887
Status Pending
Filing Date 2021-08-24
First Publication Date 2024-02-01
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Yamada, Hiroki
  • Fujioka, Takayoshi
  • Kihara, Hajime

Abstract

This information processing device for executing applications holds, for each of the applications, a manifest file (user interface definition file) in which a user interface for the application is defined. The manifest file is designated with an attribute of data type for each item for defining a user interface object through which a setting item of the application is inputted/outputted. The information processing device generates the user interface object at which setting of the application is performed on the basis of the manifest file. Accordingly, for each of the applications, the user interface regarding setting of the application is unified, operability of a user is improved, and development efficiency of an application developer is improved.

IPC Classes  ?

  • G06F 9/451 - Execution arrangements for user interfaces
  • G06F 8/38 - Creation or generation of source code for implementing user interfaces

68.

SAFETY WORK DEVICE

      
Application Number JP2022028713
Publication Number 2024/023907
Status In Force
Filing Date 2022-07-26
Publication Date 2024-02-01
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Kaneko Takeshi

Abstract

Provided is a safety work device, such as a safety cabinet or a fume hood, with minimized equipment depth and width for saving space, wherein a plurality of HEPA filters are installed in an exhaust system to make outside leakage of contaminants as close to zero as possible. This safety work device comprises: a work space (12); a front shutter (13) that covers a portion of an opening part on the front surface of the work space; a work opening part (17) located below the front shutter, and into which a worker can put their hands to conduct work; a rear opening (18) provided on a lower part of the back surface of the work space, and which sucks air in the work space; and an exhaust flow path (30) provided on the rear side of the back surface of the work space, and which exhausts the air in the work space. The safety work device is characterized in that a first HEPA filter (31) for exhaust is disposed in the longitudinal direction on the rear side of the rear opening (18) in the exhaust flow path, and a second HEPA filter (32) for exhaust is disposed in the longitudinal direction on the downstream side of the first HEPA filter in the exhaust flow path.

IPC Classes  ?

  • B01L 1/00 - Enclosures; Chambers
  • F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan

69.

LIQUID-COOLED SCREW COMPRESSOR

      
Application Number JP2023019704
Publication Number 2024/024253
Status In Force
Filing Date 2023-05-26
Publication Date 2024-02-01
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Morita Kenji
  • Yorikane Shigeyuki
  • Kajie Yuta

Abstract

A liquid-cooled screw compressor (100), which takes in gas and generates compressed gas, comprises: screw rotors (2, 3); a casing (1) accommodating the screw rotors (2, 3) and forming an operation space (C) together with the screw rotors (2, 3); and a cartridge (6) which is a separate member from the casing (1). A liquid supply path (7) for supplying a liquid to the operation area (C) is formed by the casing (1) and the external surface of the cartridge (6).

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 29/04 - Heating; Cooling; Heat insulation

70.

INSPECTION DEVICE AND METHOD

      
Application Number JP2023020364
Publication Number 2024/024263
Status In Force
Filing Date 2023-05-31
Publication Date 2024-02-01
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Wakana, Hironori
  • Neo, Atsushi
  • Yamazaki, Masahiro
  • Ojima, Masayoshi

Abstract

In the present invention, an encoder model and a decoder model, each of which is a machine learning model, are used in inspecting an object being inspected. The encoder model accepts data pertaining to the object being inspected as input, and outputs the degree of abnormality of the object being inspected. The decoder model accepts, as input, an OK/NG value that represents whether the object being inspected is normal or abnormal and a feature quantity of the data pertaining to the object being inspected, and outputs restored data pertaining to the object being inspected on the basis of the inputted feature quantity when the inputted OK/NG value represents that the object being inspected is abnormal.

IPC Classes  ?

  • G06T 7/00 - Image analysis
  • G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks

71.

GAS COMPRESSION SYSTEM AND CONTROL METHOD THEREOF

      
Application Number 18266074
Status Pending
Filing Date 2021-02-05
First Publication Date 2024-01-25
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Ren, Zhijia
  • Aoyagi, Norio

Abstract

A gas compression system that can continue control of the number of operated pieces of a compressor even when an abnormality has occurred and a control method thereof are provided. The gas compression system includes compressors, a number-of-pieces controller that executes master control to control the number of operated pieces of the compressor, and a communication network that connects the compressors and the number-of-pieces controller with each other in a mutually communicable manner. Each compressor includes a compressor main unit that compresses a gas and a controller that executes slave control to control the compressor main unit in response to a command from the number-of-pieces controller. The respective controllers are configured to determine whether an abnormality of the number-of-pieces controller or an abnormality of communication with the number-of-pieces controller has occurred on the basis of whether a safety notification from the number-of-pieces controller is received and transmit a master declaration.

IPC Classes  ?

  • F04B 49/06 - Control using electricity
  • F04B 41/02 - Pumping installations or systems specially adapted for elastic fluids having reservoirs
  • G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance

72.

AIR COMPRESSOR

      
Application Number JP2023023634
Publication Number 2024/018848
Status In Force
Filing Date 2023-06-26
Publication Date 2024-01-25
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Itou Yuuji
  • Ota Naohiro
  • Matsuzaka Takehiro

Abstract

Provided is a packaged, air-cooled air compressor capable of recommending to clean a cooler at an appropriate timing while holding down costs. The packaged, air-cooled air compressor comprises: two cooling paths to an air-cooled cooler and a motor in a package, the cooling paths having two cooling air intakes that take in outside air, a fan and an outlet that together discharge to the outside cooling air after cooling the cooler and the motor, and two temperature sensors that detect the temperature of bearings located at both ends of a motor shaft; a control unit that calculates the temperature difference between the bearings located on the upstream side (counter-load side) and downstream side (load side) at both ends of the motor shaft in the cooling air flow direction, and determines that the cooler is clogged if the temperature difference is less than a threshold value; and a display unit that, if it has been determined that the cooler is clogged, informs the user of a recommendation to clean.

IPC Classes  ?

73.

SAFETY CABINET

      
Application Number 17620785
Status Pending
Filing Date 2021-06-17
First Publication Date 2024-01-25
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Kaneko, Takeshi
  • Matsumura, Takeshi

Abstract

A laminar flow at a high air speed can be maintained, and contamination caused by operation of a device or operation of the device by a person can be suppressed as much as possible. There is provided a safety cabinet that supplies clean air into a work room from above, the cabinet including: an opening portion in a front surface of the work room; a front shutter; partition plates provided on right and left side surfaces and a back surface on an upper side of the work room; and a partition on a front upper side of the work room.

IPC Classes  ?

  • F24F 3/163 - Clean air work stations, i.e. selected areas within a space to which filtered air is passed
  • B01L 1/02 - Air-pressure chambers; Air-locks therefor
  • B01L 1/04 - Dust-free rooms or enclosures

74.

INKJET PRINTER, INKJET PRINTER CONTROL METHOD, AND PRINTING SYSTEM

      
Application Number JP2023018064
Publication Number 2024/014105
Status In Force
Filing Date 2023-05-15
Publication Date 2024-01-18
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Otowa Takuya
  • Kawano Takashi
  • Suzuki Tatsunosuke
  • Kawasaki Hiroyuki
  • Aida Kohei
  • Ogino Masahiko
  • Tsubouchi Shigetaka

Abstract

This inkjet printer comprises a printing head for performing printing by means of ink particles, a main body for suppling ink to a nozzle, and a control unit for controlling the printing head and the main body. The control unit: stores an L-V characteristic and an excitation voltage condition with which printing is possible, for a reference nozzle; measures the L-V characteristic representing a relationship between a cutting position of an ink column discharged from the nozzle and an excitation voltage; and calculates the excitation voltage condition for a mounted nozzle on the basis of the L-V characteristic and the excitation voltage condition with which printing is possible, for the reference nozzle, and the L-V characteristic of the mounted nozzle. Printing is then executed by applying the calculated excitation voltage condition.

IPC Classes  ?

  • B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
  • B41J 2/115 - Ink jet characterised by jet control synchronising the droplet separation and charging time

75.

ABNORMALITY DIAGNOSIS SYSTEM AND ABNORMALITY DIAGNOSIS METHOD

      
Application Number 18039314
Status Pending
Filing Date 2021-08-24
First Publication Date 2024-01-04
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Ojima, Masayoshi
  • Yamazaki, Masahiro
  • Sato, Kenji
  • Kobayashi, Yutaka
  • Gotou, Hideyuki

Abstract

A data analysis unit includes a validity determination unit that calculates a determination factor for determining the validity of a data analysis process to determine the validity of the data analysis process, and displays the validity determination result on a display device.

IPC Classes  ?

76.

FAILURE DIAGNOSIS ASSISTANCE SYSTEM AND FAILURE DIAGNOSIS ASSISTANCE METHOD

      
Application Number JP2023018132
Publication Number 2024/004413
Status In Force
Filing Date 2023-05-15
Publication Date 2024-01-04
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Yokohari Takashi
  • Mizukami Takaaki
  • Kono Toshiaki

Abstract

The purpose of the present invention is to provide a failure diagnosis assistance system capable of improving failure diagnosis accuracy, and also improving the accuracy of predicting failure locations and thereby more accurately identifying failed components even when it is difficult to acquire a large amount of operating data of operating equipment. In order to achieve the above purpose, this failure diagnosis assistance system is provided with: a failure information input unit to which failure information of a machine is input; a failure knowledge database that stores failure knowledge data associating event information with failure events; a failure event estimation unit that estimates a failure event on the basis of the failure information and the failure knowledge data; and a failure event candidate presentation unit that presents the estimated failure event. A plurality of symptoms obtained by subdividing failure modes relating to functional failures that occur in the machine due to occurrence of failures are regarded herein as failure events; event occurrence probabilities regarding the occurrence of failure events are defined in the failure knowledge database in advance; and the failure event estimation unit outputs a failure event matching the failure information from the failure knowledge data on the basis of the failure information.

IPC Classes  ?

  • G06Q 10/20 - Administration of product repair or maintenance

77.

ELECTROMAGNETICALLY OPERATED SWITCHING DEVICE

      
Application Number JP2022045115
Publication Number 2023/243121
Status In Force
Filing Date 2022-12-07
Publication Date 2023-12-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Satou Kazuhiro
  • Sato Takashi
  • Tomiyasu Kunihiko
  • Sugai Daisuke

Abstract

In order to obtain an electromagnetically operated switching device in which a decrease in the mechanical strength of a core and an increase in the size of the core are mitigated, the present invention provides an electromagnetically operated switching device comprising a fixing flat plate to which a coil and a fixed core are fixed, a plunger penetrating through the coil, a drive rod to which the plunger is connected and which moves in an axial direction together with the plunger, and a permanent magnet disposed on top of the coil, wherein the coil is excited to draw the plunger, a magnetic flux generated by the permanent magnet is allowed to flow to the opposite surfaces of the plunger and the fixed core so as to hold the drawn state of the plunger, and an electric current of the opposite direction from when the plunger is suctioned is allowed to flow through the coil to release the drawn state of the plunger. The electromagnetically operated switching device is characterized in that, on the contact-portion side of at least one of the plunger and the fixed core, which are circumferentially spaced apart by a predetermined interval and are disposed opposite each other, a slit is provided to span from the outer peripheral side to the drive rod side, the slit being formed to be shallower on the drive rod side and deeper on the outer peripheral side.

IPC Classes  ?

  • H01F 7/16 - Rectilinearly-movable armatures
  • H01F 7/11 - Electromagnets; Actuators including electromagnets with armatures specially adapted for ac reducing or eliminating the effects of eddy currents
  • H01F 7/122 - Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnet
  • H01H 33/38 - Power arrangements internal to the switch for operating the driving mechanism using electromagnet
  • H01H 51/06 - Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by

78.

POWER CONVERSION DEVICE

      
Application Number JP2022039396
Publication Number 2023/243115
Status In Force
Filing Date 2022-10-21
Publication Date 2023-12-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Nakahara, Mizuki
  • Shimada, Takae
  • Watabe, Yoshihisa
  • Ishigaki, Takuya
  • Uei, Yusuke

Abstract

Provided is a power conversion device that can suppress fluctuations in output voltage caused by sudden changes in load. Therefore, the power conversion device 100 comprises: an AC-DC converter 101 that converts AC power into first DC power; a DC-DC converter 102 that converts the first DC power to second DC power; and a control circuit 110 that controls an intermediate output voltage V1 of the AC-DC converter 101 on the basis of an output voltage command value. The control circuit 110 corrects the output voltage command value of the AC-DC converter 101 on the basis of the change rate of the output voltage V2 of the DC-DC converter 102 and the change rate of the output current Io of the DC-DC converter 102.

IPC Classes  ?

  • H02M 3/00 - Conversion of dc power input into dc power output
  • H02M 7/12 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

79.

ROTARY ELECTRIC MACHINE

      
Application Number JP2022041817
Publication Number 2023/243116
Status In Force
Filing Date 2022-11-10
Publication Date 2023-12-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Shibamoto Yuki
  • Fujisawa Yukinari
  • Kawashima Takuya

Abstract

In the present invention, a rotary electric machine is efficiently cooled. This rotary electric machine comprises a stator 6, a rotor 5 connected to a rotation shaft 10, a housing 7 that surrounds the stator and the rotor, an anti-load side end bracket 3 connected to the housing, and a fan 1 that blows cooling air from the anti-load side end bracket. The anti-load side end bracket 3 has: a first through hole 100 that allows cooling air to pass through the inside of the housing; a first tapered part 3A that has an apex between the first through hole and the outer periphery of the anti-load side end bracket, and that is inclined in the load direction from the apex to the first through hole; and a second tapered part 3B that is inclined in the load direction from the apex to the outer periphery of the anti-load side end bracket.

IPC Classes  ?

  • H02K 9/04 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
  • H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching

80.

COMPRESSOR

      
Application Number JP2022042242
Publication Number 2023/243117
Status In Force
Filing Date 2022-11-14
Publication Date 2023-12-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Narisawa Nobuyuki
  • Umeda Ken

Abstract

121limit2limit1limit11limit22limit11limit22limit2limit

IPC Classes  ?

81.

SCREW COMPRESSOR

      
Application Number JP2023010824
Publication Number 2023/243171
Status In Force
Filing Date 2023-03-20
Publication Date 2023-12-21
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Chiba Kotaro
  • Yorikane Shigeyuki
  • Morita Kenji
  • Kajie Yuta

Abstract

A casing of this screw compressor has a discharge-side inner wall surface facing the discharge-side end surfaces of a male rotor and a female rotor. The discharge-side inner wall surface of the casing has a shield region which periodically appears on the discharge-side end surfaces according to a change in the engagement due to rotations of the male rotor and the female rotor, and which shields at least a portion of a trajectory of an axial communication path which is a gap sandwiched between the retreat surfaces of the male rotor and the female rotor. A longitudinal groove is provided in the shield region of the casing 4. The groove is configured so that a normal line at each longitudinal position coincides with a tangent line (direction perpendicular to the radial direction of the female rotor) in the circumferential direction of the female rotor at the position.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04B 39/12 - Casings; Cylinders; Cylinder heads; Fluid connections
  • F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups

82.

Inkjet Recording Device and Method for Controlling Inkjet Recording Device

      
Application Number 18238841
Status Pending
Filing Date 2023-08-28
First Publication Date 2023-12-14
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Arima, Takahiro
  • Mizoguchi, Sho
  • Miyao, Akira
  • Ueda, Fumiomi
  • Okano, Mamoru

Abstract

An inkjet recording device includes a main body unit, a print head unit, and a head mounting unit. The main body unit includes an ink container. The print head unit includes a nozzle connected to the ink container. The head mounting unit is configured to allow the print head unit to be mounted on the head mounting unit. The head mounting unit includes a head detection unit that detects whether or not the print head unit is mounted, using a magnetic force.

IPC Classes  ?

  • B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
  • B41J 2/08 - Ink jet characterised by jet control for many-valued deflection charge-control type
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 2/175 - Ink supply systems
  • B41J 2/185 - Ink-collectors; Ink-catchers

83.

CRANE DEVICE AND CRANE CONTROL SYSTEM

      
Application Number JP2023007801
Publication Number 2023/238459
Status In Force
Filing Date 2023-03-02
Publication Date 2023-12-14
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Oikawa Yugo
  • Otsuki Masahiro
  • Tagami Tatsuya

Abstract

Provided are a crane device and a crane control system with which the most recent operation information of a crane device can be stored in a data server, and further, motion information and emergency information, which contain a large amount of information, can be viewed on a portable information display terminal as necessary. The crane device comprises: a plurality of driving motors including at least a hoisting motor 3 and a movement motor 5; a crane control unit 15 that controls each of the driving motors; and a communication unit 22 connected to the crane control unit 15. The communication unit 22 is equipped with: a function of periodically sending operation information to a cloud server 24 via a long-distance communication network; and a function of sending, in accordance with a request from a portable information display terminal 26, operation information to the information display terminal via a short-distance communication network. Due to this configuration, the most recent operation information of the crane device can be stored in a data server, and further, operation information can be viewed as necessary on the portable information display terminal.

IPC Classes  ?

  • B66C 13/00 - Other constructional features or details
  • B66C 13/18 - Control systems or devices
  • B66C 13/46 - Position indicators for suspended loads or for crane elements

84.

Screw Compressor and Screw Rotor

      
Application Number 18032494
Status Pending
Filing Date 2021-10-18
First Publication Date 2023-12-07
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Tsuchiya, Takeshi
  • Chiba, Kotaro
  • Komatsu, Tomohiro
  • Tanimoto, Shota
  • Yabe, Toshiaki
  • Yorikane, Shigeyuki

Abstract

In a screw compressor, a lobe profile of cross-sections perpendicular to the axial direction in a female rotor that rotates about a second rotation center changes in the axial direction. One lobe of the lobe profile of the female rotor includes: a first contour line defining a leading flank on a rotation direction side of the female rotor with a lobe bottom as a boundary point; a second contour line defining a trailing flank on an opposite side of the rotation direction; and a third contour line defining a lobe tip having both endpoints at which the female has the maximum radius. In the lobe profile of the female rotor, when a first angle, a second angle, and a third angle are respectively defined as an angle formed by two line segments linking a second rotation center as a vertex and both ends of the first contour line, an angle formed by two line segments linking the second rotation center and both ends of the second contour line, and an angle formed by two line segments linking the second rotation center and both ends of the third contour line, the third angle is greater on the delivery side in the axial direction, and the first angle is smaller on the delivery side in the axial direction.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

85.

INK-DOT DRYING DEVICE, INK-DOT DRYING METHOD, AND PRINTING SYSTEM

      
Application Number JP2022041288
Publication Number 2023/233684
Status In Force
Filing Date 2022-11-07
Publication Date 2023-12-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Sasaki Hiroshi
  • Tsubouchi Shigetaka
  • Ogino Masahiko
  • Aida Kohei

Abstract

The present invention provides a device, a method, and a system which make it possible to rapidly dry ink dots while inhibiting the product from suffering a thermal deterioration, e.g., alteration. The ink-dot drying device 100, which is for drying ink dots formed on an article, comprises: an air blower 50 for blowing cool air against an article (product) on which a given matter has been printed by an ink-jet printer and which is being conveyed on a conveyor; a temperature sensor 12 for measuring the temperature of the article (product); and a controller 70 for controlling the temperature of the cool air being sent by the air blower. The controller 70 controls the temperature of the cool air being sent by the air blower so that said temperature is not higher than a temperature at which the article is to be stored, before the cool air is jetted to the article.

IPC Classes  ?

86.

LIQUID SUPPLY SCREW COMPRESSOR

      
Application Number JP2023010821
Publication Number 2023/233764
Status In Force
Filing Date 2023-03-20
Publication Date 2023-12-07
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Chiba Kotaro
  • Yorikane Shigeyuki
  • Morita Kenji
  • Kajie Yuta

Abstract

This screw compressor comprises a casing having a liquid supply mechanism for supplying a liquid to an accommodation chamber accommodating a screw rotor. The liquid supply mechanism has: a spraying hole that opens to the accommodation chamber; a swirl chamber that is located upstream of the spraying hole; and an introduction path that introduces the liquid to the swirl chamber. The casing includes first and second casing segments that are divided, where a plane such as that crossing the accommodation chamber serves as the division plane. The swirl chamber is configured from a recess that opens to a joining surface of at least one of the first and second casing segments. The introduction path is configured from a hole part or the like that opens to a joining surface of the other of the first and second casing segments.

IPC Classes  ?

  • F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
  • F04C 29/02 - Lubrication; Lubricant separation 

87.

Inkjet Recording Device

      
Application Number 18032722
Status Pending
Filing Date 2020-11-04
First Publication Date 2023-12-07
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Arima, Takahiro
  • Okamoto, Yusuke
  • Mizoguchi, Sho
  • Miyao, Akira
  • Matsumoto, Tatsuo

Abstract

An object of the present invention is to reduce the amount of solvent vapor floating around when a print head is cleaned in an inkjet recording device. In addition, an object is to reduce ink stains on a periphery of the print head. An inkjet recording device includes a main body portion and a print head. The main body portion includes an ink container that contains ink, and a solvent container that contains a solvent. The print head includes a nozzle connected to the ink container to discharge the pressurized and supplied ink, a charging electrode that charges ink particles discharged from the nozzle, a deflection electrode that deflects the ink particles charged by the charging electrode, and a gutter that collects the ink. In addition, a head mounting unit for cleaning the print head is provided. The head mounting unit is connected to a solvent vapor suction path for suctioning solvent vapor generated therearound.

IPC Classes  ?

88.

SLIDING MATERIAL AND GAS COMPRESSOR

      
Application Number JP2022040167
Publication Number 2023/228435
Status In Force
Filing Date 2022-10-27
Publication Date 2023-11-30
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Saito Hayate
  • Kobayashi Yoshio
  • Ishii Satoshi

Abstract

A sliding material having excellent wear resistance is provided. In order to address the problem, the sliding material (12) comprises a resin (12a), first particles (12b), which are disposed in the resin (12a) and are made of an inorganic material, and second particles (12c), which are disposed in the resin (12a) and are made of an inorganic material having a higher Vickers hardness than the first particles (12b). When a value obtained by diving the Vickers hardness of the second particles (12c) by the Vickers hardness of the first particles (12b) is defined as a hardness ratio and a value obtained by dividing the content of the first particles (12b) with respect to the resin (12a) by the content of the second particles (12c) with respect to the resin (12a) is defined as a content ratio, then a value obtained by dividing the hardness ratio by the content ratio is 0.3-2.8.

IPC Classes  ?

  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • C08K 3/013 - Fillers, pigments or reinforcing additives
  • C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
  • C08K 3/36 - Silica
  • C08K 7/06 - Elements
  • C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
  • F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

89.

GAS COMPRESSOR

      
Application Number 18026362
Status Pending
Filing Date 2021-09-10
First Publication Date 2023-11-16
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Yorikane, Shigeyuki
  • Morita, Kenji
  • Kajie, Yuta

Abstract

A gas compressor inhibits a supply delay of a compressed gas at a time of a return from no-load operation to load operation, and also reduces the consumed motive power. A controller switches between load operation and no-load operation by controlling a suction throttle valve according to a sensed delivery-side pressure, and also controls a rotation speed of an electric motor that drives the compressor. The controller is configured to compute a capacity C of an air supply system that supplies a compressed air generated by the air compressor to a use location of the compressed gas on a basis of load operation duration t1 and no-load operation duration t2, and set a target rotation speed of the electric motor at a time of no-load operation on a basis of the capacity C of the air supply system.

IPC Classes  ?

  • F04B 49/06 - Control using electricity
  • F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
  • F04C 28/26 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
  • F04C 28/08 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed

90.

Inkjet Recording Device

      
Application Number 18360985
Status Pending
Filing Date 2023-07-28
First Publication Date 2023-11-16
Owner Hitachi Industrial Equipent Systems Co., Ltd. (Japan)
Inventor
  • Yamaguchi, Shoki
  • Arima, Takahiro
  • Mizoguchi, Sho
  • Okano, Mamoru
  • Miyao, Akira

Abstract

An inkjet recording device having a print head cleaning function of preventing a cleaning liquid from spilling around the inkjet recording device and storing the cleaning liquid used for cleaning in a highly airtight container. The inkjet recording device includes a main body including an ink container accommodating an ink used to perform printing on a print target, and a cleaning liquid container that accommodates a cleaning liquid; a print head including a nozzle that is connected to the ink container to discharge the ink which is pressurized and supplied, a charging electrode that charges ink particles, a deflection electrode that deflects the ink particles charged by the charging electrode, and a gutter that recovers the ink particles which are not used for the printing; and a head cleaning unit including a cleaning nozzle that discharges the cleaning liquid, and an insertion port into which the print head is insertable.

IPC Classes  ?

  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

91.

Oil feed type air compressor

      
Application Number 18022635
Grant Number 11988217
Status In Force
Filing Date 2021-08-16
First Publication Date 2023-11-09
Grant Date 2024-05-21
Owner Hitachi Industrial Equipment Systems Co., Ltd. (Japan)
Inventor
  • Yorikane, Shigeyuki
  • Morita, Kenji
  • Kajie, Yuta

Abstract

Provided is an oil feed type air compressor which can increase the determination accuracy regarding a deterioration state of oil. An oil feed type air compressor 1 includes a compressor main body 3, a separator 6 that separates oil from compressed air discharged from the compressor main body 3, and an oil feeding system 8 that feeds the oil separated by the separator 6 into a compression chamber of the compressor main body 3. The oil feeding system 8 includes a temperature control valve 20 that adjusts a diversion ratio for an oil cooler 18 and a diversion ratio for a bypass pipe 19 according to a temperature of the oil. The oil feed type air compressor 1 includes pressure sensors 22A and 22B located in the oil feeding system 8, a discharge temperature sensor 11 located on the discharge side of the compressor main body 3, and a controller 9 that computes, when it is estimated that the diversion ratio for the oil cooler 18 is 100% from the temperature sensed by the discharge temperature sensor 11 exceeding a predetermined value Td1, a difference ΔP between the pressure sensed by the pressure sensor 22A and the pressure sensed by the pressure sensor 22B and determines a deterioration state of the oil in reference to the difference ΔP.

IPC Classes  ?

  • F04D 29/063 - Lubrication specially adapted for elastic fluid pumps
  • F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
  • F16N 29/00 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems

92.

SANFEMS

      
Serial Number 98261867
Status Pending
Filing Date 2023-11-08
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
NICE Classes  ?
  • 38 - Telecommunications services
  • 09 - Scientific and electric apparatus and instruments
  • 35 - Advertising and business services
  • 37 - Construction and mining; installation and repair services
  • 42 - Scientific, technological and industrial services, research and design

Goods & Services

Telecommunication; message sending; communications by computer terminals; transmission of electronic mail; providing information in the field of telecommunications; providing user access to global computer networks; telecommunications routing and junction services; radio communications; rental of access time to global computer networks; providing access to databases; transmission of digital files; streaming of data; computer aided transmission of messages and images; rental of message sending apparatus; arranging subscriptions to telecommunication services for others Time recording apparatus; measuring or testing machines and instruments; measures; dynamometers; water level gauges; pressure measuring apparatus; pressure gauges; thermometers, not for medical purposes; temperature indicators; calorimeters; flowmeters; heat regulating apparatus; hygrometers; measuring apparatus; precision measuring apparatus; measuring instruments; measuring devices, electric; detectors; power distribution or control machines and apparatus; rotary converters; phase modifiers; chargers for electric accumulators; converters, electric; electric apparatus for commutation; electric circuit closers; transformers; electrical distribution boxes; switchboards; circuit breakers; electricity distribution consoles; electric control panels; inverters; anode batteries; high tension batteries; batteries, electric; meters; electric or magnetic meters and testers; voltmeters; ammeters; galvanometers; frequency meters; electric loss indicators; telecommunication machines and apparatus; monitoring apparatus, other than for medical purposes; electric installations for the remote control of industrial operation; remote control apparatus; telecommunications transmitting sets; intercommunication apparatus; electro-dynamic apparatus for the remote control of signals; telecommunications transmitters; radiotelegraphy sets; high- frequency apparatus; boiler control instruments; personal digital assistants; optical data media; electronic machines, apparatus and their parts; computer programs; computers; data processing apparatus; computer memory devices; computer peripheral devices; computer monitors; monitors; computer hardware; interfaces for computers; laptop computers; tablet computers; computer programs, recorded; computer operating programs, recorded; computer software, recorded; computer programs, downloadable; computer software applications, downloadable; pre-recorded CD-ROMs; battery chargers Business management analysis or business consultancy; business management; marketing research or analysis; providing information concerning commercial sales; commercial or industrial management assistance; business consultancy services for digital transformation; advisory services for business management; business research; business management and organization consultancy; business management consultancy; business efficiency expert services; commercial or industrial management assistance; professional business consultancy; marketing research; commercial information agency services; market intelligence services; business appraisals; business organization consultancy; providing business information; compilation of statistics; providing commercial and business contact information; office functions, namely, filing, in particular documents or magnetic tapes; data processing services ; compilation of information into computer databases; systemization of information into computer databases; updating and maintenance of data in computer databases; providing business assistance to others in the operation of data processing apparatus, namely, computers, typewriters, telex machines and other similar office machines; providing commercial information and advice for consumers in the choice of products and services; arranging subscriptions to telecommunication services for others Construction; factory construction; providing construction information; construction consultancy; operation and maintenance of building equipment; repair or maintenance of air conditioners for industrial purposes; repair or maintenance of burners; repair or maintenance of boilers; repair or maintenance of pumps; repair or maintenance of freezing machines and apparatus for industrial purposes; services of electricians; installation, maintenance and repair of computer hardware; repair or maintenance of electronic machines and apparatus; repair or maintenance of telecommunication machines and apparatus; repair or maintenance of electric motors; repair or maintenance of power distribution or control machines and apparatus; repair or maintenance of power generators; repair or maintenance of measuring and testing machines and instruments; repair or maintenance of chemical plants; repair or maintenance of nuclear power plants Architectural design; surveying; architectural consultancy; construction drafting; urban planning; designing of machines, apparatus, instruments or systems composed of such machines, apparatus and instruments; engineering; computer programming; design of computer-simulated models; computer software design; updating of computer software; maintenance of computer software; computer system design; software development in the framework of software publishing; development of computer platforms; writing of computer code; computer programming services for data processing; software engineering services for data processing; computer software consultancy; installation of computer software; internet security consultancy; data security consultancy; telecommunication network security consultancy; computer security consultancy; monitoring of computer systems; off-site data backup; monitoring of computer systems to detect breakdowns; technological advice relating to computers, automobiles and industrial machines; providing scientific information, advice and consultancy relating to carbon offsetting; technological consultancy services for digital transformation; Technical support services, namely, troubleshooting of computer software problems; computer technology consultancy; research on building construction or city planning; testing or research on prevention of pollution; testing or research on electricity; testing or research on civil engineering; energy auditing; scientific research in the field of environmental protection; research in the field of building construction; consultancy in the field of energy- saving; research in the field of telecommunications technology; testing or research on machines, apparatus and instruments; calibration; mechanical research; rental of measuring apparatus; rental of meters for the recording of energy consumption; rental of computers; providing computer programs on data networks; computer rental; rental of computer software; software as a service (SaaS); platform as a service (PaaS); providing virtual computer systems through cloud computing; electronic data storage

93.

INKJET RECORDING DEVICE, AND INKJET RECORDING SYSTEM

      
Application Number JP2022019041
Publication Number 2023/209854
Status In Force
Filing Date 2022-04-27
Publication Date 2023-11-02
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Arima Takahiro
  • Taniguchi Kazuhiko
  • Okawa Keisuke
  • Okamoto Yusuke

Abstract

Provided are an inkjet recording device and an inkjet recording system that includes the inkjet recording device, the inkjet recording device comprising a printing head including a nozzle, a charging electrode, a deflecting electrode, and a gutter for recovering unused ink, a main body comprising an ink feed pathway for causing ink in an ink container to circulate to the printing head, an ink recovery pathway, a solvent feed pathway for feeding a solvent in a solvent container to the ink container, and flow rate regulating portions for regulating the flows of ink and solvent in the respective pathways, a main body control portion for controlling the operation of the flow rate regulating portion of the main body and the printing head, and a head mounting unit including a head mounting portion for mounting and stowing the printing head, and a printing head detector for detecting that the printing head has been mounted, wherein, upon detecting that the printing head has been mounted in the head mounting unit, the main body control portion starts ejection of ink from the nozzle at the timing of a remotely preset time point.

IPC Classes  ?

94.

PARTIAL DISCHARGE DETECTOR

      
Application Number JP2022042571
Publication Number 2023/210048
Status In Force
Filing Date 2022-11-16
Publication Date 2023-11-02
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Hosono Takafumi
  • Nukaga Jun
  • Satou Shindai

Abstract

A partial discharge detector for detecting partial discharge in an object, wherein the partial discharge detector includes: a first sensor that is arranged on a grounded conductor and measures transient ground voltage; a second sensor that is arranged on an object and measures transient ground voltage; and an output unit that uses the signals from the first sensor and the second sensor as a basis to output whether there is partial discharge in the object.

IPC Classes  ?

  • G01R 31/12 - Testing dielectric strength or breakdown voltage

95.

LASER MARKER DEVICE, AND CONTROL DEVICE FOR LASER MARKER DEVICE

      
Application Number JP2022046588
Publication Number 2023/210055
Status In Force
Filing Date 2022-12-19
Publication Date 2023-11-02
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Matsushita Mayumi
  • Kawamura Tomoto

Abstract

Provided is a novel laser marker device with which it is possible to expand a printing region, with respect to a printing subject which moves relatively and which comprises a three-dimensional printing surface. The laser marker device comprises: a laser oscillation unit 11 for generating laser light; a beam diameter adjustment unit 12 for adjusting the beam diameter of the laser light emitted by the laser oscillation unit 11; a laser light scanning unit 13 for scanning the laser light emitted by the beam diameter adjustment unit 12; a condensing lens unit 14 for condensing the laser light emitted by the laser light scanning unit 13 onto a printing surface of a printing subject; and a control unit 16 that controls the laser oscillation unit 11, the beam diameter adjustment unit 12, and the laser light scanning unit 13. A tracking mirror unit 15 is provided to reflect the laser light emitted from the condensing lens unit 14 and project the laser light onto the printing subject which moves. The control unit 16 adjusts an emission angle from the tracking mirror unit 15 in response to the movement of the printing subject Wk1 so that the laser light emitted from the tracking mirror unit 15 is incident at a prescribed angle on the printing surface of the printing subject Wk1.

IPC Classes  ?

  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
  • B23K 26/046 - Automatically focusing the laser beam

96.

UNMANNED AIRCRAFT SUPPORT DEVICE AND UNMANNED AIRCRAFT SUPPORT SYSTEM

      
Application Number JP2022043921
Publication Number 2023/203807
Status In Force
Filing Date 2022-11-29
Publication Date 2023-10-26
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor Takeda Kenji

Abstract

According to the present invention, an unmanned aircraft is raised via an unmanned aircraft support device to thereby reduce the consumption of stored energy in the unmanned aircraft and extend the range of the unmanned aircraft. An unmanned aircraft support device 10 comprises a mounting unit 1 on which an unmanned aircraft 100 is mounted and a control unit that controls the raising and lowering of the mounting unit, wherein the mounting unit 1 is raised to a predetermined height to enable the unmanned aircraft 100 to take off. An unmanned aircraft support system comprises a server 5 that can communicate with the unmanned aircraft support device 10 and that selects, on the basis of externally inputted travel information including at least a departure point and a destination of the unmanned aircraft, a route to be flown by the unmanned aircraft 100 and one or more unmanned aircraft support devices 10 along the route.

IPC Classes  ?

97.

POWER CONVERSION DEVICE

      
Application Number JP2023001075
Publication Number 2023/199563
Status In Force
Filing Date 2023-01-17
Publication Date 2023-10-19
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Tobari Kazuaki
  • Taguchi Yoshiyuki
  • Iwase Yuta

Abstract

This power conversion device has a control unit that controls the output frequency, output voltage, and output current of a motor. The control unit calculates a first torque current command from the deviation between the speed command value and the speed estimated value of the motor, switches a control mode to either the control mode for suppressing the speed ripple of the motor or the control mode for suppressing the torque ripple of the motor, and then calculates a second torque current command from the first torque current command and the switched control mode.

IPC Classes  ?

  • H02P 21/05 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting
  • H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

98.

AIR COMPRESSOR

      
Application Number 18020290
Status Pending
Filing Date 2021-08-16
First Publication Date 2023-10-19
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Itou, Yuuji
  • Yabe, Toshiaki
  • Sakai, Kohei
  • Nakajima, Takashi

Abstract

Provided is an air compressor that suppresses a rise in delivery temperature due to a change in atmospheric pressure, and consequently improves the life of parts. The air compressor 1 includes a motor 2, a compressor main body 3 driven by the motor 2 to compress air, a delivery pressure sensor 12 that senses a delivery pressure of the compressor main body 3, an atmospheric pressure sensor 13 that senses an atmospheric pressure, and a controller 15. The controller 15 compares the delivery pressure sensed by the delivery pressure sensor 12 with a set pressure, and performs operation control based on a result of the comparison. The controller 15 corrects the set pressure such that a ratio between the atmospheric pressure sensed by the atmospheric pressure sensor 13 and the set pressure becomes a set value set in advance.

IPC Classes  ?

99.

LIQUID FEED TYPE GAS COMPRESSOR

      
Application Number 18024804
Status Pending
Filing Date 2021-09-14
First Publication Date 2023-10-19
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Morita, Kenji
  • Yorikane, Shigeyuki
  • Kajie, Yuta

Abstract

An oil feed type air compressor includes a compressor main body, a separator that separates the oil from the compressed air delivered from the compressor main body, and an oil feed system that supplies the oil to the working chambers and bearings of the compressor main body. The oil feed system includes an oil cooler that includes a cooling unit and a cooling unit connected on a downstream side of the cooling unit, an oil feed pipe that is connected to an outlet between the cooling unit and the cooling unit and that supplies the oil cooled by the cooling unit to the bearings of the compressor main body, and an oil feed pipe that is connected to an outlet on a downstream side of the cooling unit and that supplies the oil cooled by the cooling units to the working chambers of the compressor main body.

IPC Classes  ?

  • F04C 29/02 - Lubrication; Lubricant separation 

100.

PACKAGED COMPRESSOR

      
Application Number 18026258
Status Pending
Filing Date 2021-09-21
First Publication Date 2023-10-19
Owner HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (Japan)
Inventor
  • Yamamoto, Kentaro
  • Kado, Tomoyuki

Abstract

A packaged compressor with enhanced electric motor coolability includes an electric motor having an axial direction that lies in a horizontal direction; a compressor body; a housing that houses the electric motor and the compressor body; a cooling air inlet formed through a side surface of the housing; a cooling air outlet formed through an upper surface of the housing; and a cooling fan arranged on a side of the electric motor such that an axial direction of the cooling fan lies in a horizontal direction and crosses the axial direction of the electric motor. The cooling fan has a diameter greater than the height dimension of the electric motor and it's its axial-direction projection plane includes a portion overlapping the electric motor, a portion positioned above the electric motor and not overlapping the electric motor, and a portion positioned below the electric motor and not overlapping the electric motor.

IPC Classes  ?

  • F04B 39/06 - Cooling; Heating; Prevention of freezing
  • F04B 39/16 - Filtration; Moisture separation
  • F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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