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

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  ?

• B41J 2/175 - Ink supply systems
• B41J 2/18 - Ink recirculation systems

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

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

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

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

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

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

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

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

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

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  ?

• B66D 3/26 - Other details, e.g. housings

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  ?

• F04B 49/06 - Control using electricity

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

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  ?

• G06Q 10/20 - Administration of product repair or maintenance
• G06Q 30/012 - Providing warranty services

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  ?

• G05B 23/02 - Electric testing or monitoring

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

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  ?

• B01D 53/26 - Drying gases or vapours

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

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

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 

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

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]

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]

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

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

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

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

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

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  ?

• F04B 49/10 - Other safety measures

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

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

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

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

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

Abstract

121limit2limit1limit11limit22limit11limit22limit2limit

IPC Classes  ?

• F04B 49/10 - Other safety measures

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

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

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  ?

• B41J 2/01 - Ink jet

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 

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

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  ?

• B41J 2/17 - Ink jet characterised by ink handling
• B41J 2/01 - Ink jet
• B41J 2/185 - Ink-collectors; Ink-catchers

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

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

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  ?

• B64F 1/12 - Anchoring
• B64C 27/04 - Helicopters
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• B64F 1/36 - Other airport installations
• B64U 80/82 - Airborne vehicles

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

Abstract

Provided are: an inkjet recording device with which it is possible to remotely perform maintenance and management such as a print-head cleaning process; and an inkjet recording system.　This inkjet recording system comprises: an inkjet recording device; a server connected to the inkjet recording device; a network connected to the server; and an external control device that is connected to the network and that controls the inkjet recording device via the server. The inkjet recording device comprises: a print head having a nozzle which forms particles from an ink and ejects the particles, a charging electrode for charging the ink particles, a deflection electrode for deflecting the charged ink particles, and a gutter through which unused ink is recovered; a body control unit for controlling the print head; and a head mounting unit which has a print head mounting part for accommodating the print head therein and a print head detector for determining whether or not the print head has been accommodated. In addition, the external control device comprises at least: a head mounting confirmation means for checking whether or not the print head is in a state of being mounted to the head mounting unit; and an ink ejection confirmation means for checking whether ink is being ejected from the nozzle of the print head.

IPC Classes  ?

• B41J 2/01 - Ink jet
• 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 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism

Abstract

This transmission device receives data from a transmission source device, executes processing, and transmits the processed data to a reception destination device. The transmission device comprises a processor which executes a program group, and a storage device which stores initial configuration information and the program group, wherein each of the program groups is a program that is suitable for any one of a reception protocol, a processing protocol, and a transmission protocol, and the initial configuration information defines designation information for designating a program that is suitable for the protocol for each of the protocols. The processor: receives a selection between the reception protocol and the transmission protocol, and an input of a first configuration parameter to a first program suitable for the reception protocol and the transmission protocol; acquires first designation information for designating the first program with reference to the initial configuration information; and activates the first program by using the first designation information and the first configuration parameter.

IPC Classes  ?

• H04L 41/0806 - Configuration setting for initial configuration or provisioning, e.g. plug-and-play
• H04L 67/06 - Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]

Abstract

The present invention includes a piston (14) that includes a piston ring groove (14b) on an outer peripheral surface formed by a curved surface, and that reciprocates while pivoting in a cylinder (15); a piston ring (14c) that is mounted in the piston groove (14b) and that slides on an inner circumferential surface of the cylinder (15); and a crank shaft (11) that causes the piston (14) to reciprocate via a connecting rod (13). A center axis (AX1) of the cylinder (15) is disposed at a position separated from a rotation axis (AX2) of the crank shaft (11). A rotation stopper (14i) of the piston ring (14c) is provided in the piston ring groove (14b). In a compression step, abutment clearances (14hc), (14hd), (14he) of the piston ring (14c) are positioned on the outer peripheral surface (14a) side of the piston (14) which is in a state of being against the inner circumferential surface of the cylinder (15).

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

Abstract

A suction flow path of a screw compressor according to the present invention comprises: a male-side flow path opening in an axial direction to a working chamber of the suction stroke of a male rotor 2 side and extending from a starting end on one side of a virtual plane to a first termination end on the other side; and a female-side flow path opening in the axial direction to a working chamber of the suction stroke of a female rotor side and extending from a starting end to a second terminal end on the other side of the virtual plane. A flow path wall of the male-side flow path includes a male-side first flow path wall facing a rotor tooth section side, and a flow path wall of the female-side flow path includes a female-side first flow path facing the rotor tooth section side. The male-side first flow path wall or the female-side first flow path wall approaches the male-side rotor tooth section or the female-side rotor tooth section moving from the starting end side to the first termination end side or the second termination end side in at least a partial section from the starting end to the first termination end or the second termination end.

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 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

Abstract

This compressor previously obtains a bearing temperature rise of a bearing and stores the bearing temperature rise as a first bearing temperature rise pattern, compares an actual second bearing temperature rise pattern of the bearing detected by a temperature sensor with the prestored first bearing temperature rise pattern, and, when it is determined that the bearing temperature rise is a temperature rise due to grease filling, performs control so that an alarm is not activated.

IPC Classes  ?

• H02P 29/62 - Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor
• F16C 33/66 - Special parts or details in view of lubrication
• F16C 41/00 - Other accessories for bearings

Abstract

This invention provides a gas compressor comprising: a compressed gas passage through which a compressed gas discharged from the compressor body passes; a temperature sensor that measures the temperature of the compressed gas passing through the compressed gas passage; a compressed gas cooler that cools the compressed gas; a condensate discharge valve that discharges condensates resulting from cooling of the compressed gas; and a controller that controls the opening/closure of the condensate discharge valve, and characterised in that the controller controls the opening/closure of the condensate discharge valve on the basis of a change in the temperature of the compressed gas measured by the temperature sensor.

IPC Classes  ?

• F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
• F04B 39/16 - Filtration; Moisture separation
• F04B 49/06 - Control using electricity
• F04B 51/00 - Testing machines, pumps, or pumping installations

Abstract

A motor control device for controlling a machine comprises: an identification unit that estimates an inertia moment and viscosity friction; a velocity command generation unit that generates a velocity command, which is obtained by integrating an acceleration command; a differential signal calculation unit that calculates a differential signal from acceleration commands of different times; and an identification period determination unit that determines a validity period for operating the identification unit on the basis of the differential signal, and operates the identification unit in the validity period. The motor control device drives a motor on the basis of the velocity command generated by the velocity command generation unit, and the identification unit estimates the inertia moment and viscosity friction.

IPC Classes  ?

• H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
• G05B 11/36 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
• H02P 21/16 - Estimation of constants, e.g. the rotor time constant

Abstract

The purpose of the present invention is to provide a gas compressor with which it is possible to adjust the temperature of a heat recovery liquid discharged from an exhaust heat recovery heat exchanger to a desired temperature at low cost without installing a temperature control valve or the like in the path of the heat recovery liquid. To achieve this purpose, a gas compressor comprises a heat exchange liquid temperature sensor 34 that detects the temperature of a heat exchange liquid discharged from an exhaust heat recovery heat exchanger 11, and a path 21 through which at least some of a high-temperature fluid cooled by an air-cooled cooler 20 flows into a compressor body 1, the gas compressor also comprising a heat exchange liquid temperature sensor 34 that detects the temperature Tw2 of a heat exchange liquid discharged from the exhaust heat recovery heat exchanger 11, and a controller 37 having a heat exchange liquid temperature adjustment function for controlling the rotation speed of a cooling fan 30 so that the temperature Tw2 detected by the heat exchange liquid temperature sensor 34 approaches a prescribed target heat exchange liquid temperature Tw2t.

IPC Classes  ?

• F04B 39/06 - Cooling; Heating; Prevention of freezing
• F04C 29/04 - Heating; Cooling; Heat insulation
• F24H 1/00 - Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
• F24H 15/174 - Supplying heated water with desired temperature or desired range of temperature
• F24H 15/35 - Control of the speed of fans

Abstract

This gas compressor comprises: a low-pressure gas path that guides compressed gas discharged from a low-pressure stage compressor body to a high-pressure stage compressor body; a first low-pressure relief valve provided to a first low-pressure branch path that branches from a low-pressure gas path; a high-pressure gas path that guides compressed gas discharged from the high-pressure stage compressor body to a demand destination; a first high-pressure relief valve provided to a first high-pressure branch path that branches from the high-pressure gas path; and a control device. The first low-pressure branch path is provided downstream of a heat exchanger for low-pressure stage heat recovery. The first high-pressure branch path is provided downstream of a heat exchanger for high-pressure stage heat recovery. The control device opens the first low-pressure relief valve and the first high-pressure relief valve when switching from a load operation to a no-load operation.

IPC Classes  ?

• F04C 28/06 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
• F04B 41/06 - Combinations of two or more pumps
• 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

Abstract

Provided are a partial discharge detection device and a partial discharge detection method capable of separating external noise from internal partial discharge and reliably detecting the internal partial discharge under a situation in which the external noise and the internal partial discharge are mixed.　The partial discharge detection device comprises: a transient grounding voltage sensor 12 that is provided in a high voltage device and that measures a transient grounding voltage; a partial discharge detection signal selection means 13, 15 for selecting a partial discharge detection signal relating to internal partial discharge among detection signals outputted from the transient grounding voltage sensor; a partial discharge generation detection means 18 for detecting a partial discharge generation signal indicating generation of the internal partial discharge from the selected partial discharge detection signal; a partial discharge generation signal holding means 19, 20 for holding the detected partial discharge generation signal; and a sampling means 23 for sampling the partial discharge generation signal held by the partial discharge generation signal holding means for each arrival of a prescribed sampling period.

IPC Classes  ?

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

Abstract

Provided is an oil-free air compressor that prevents reverse rotation of a compressor body while the compressor is out of service, thereby preventing oil from entering the compressor body, and improving the reliability, as well as exhibiting a rust preventive effect. An oil-free air compressor 100 comprising: an oil-free compressor body 1 that compresses air and outputs the compressed air; a cooler 5 that is connected to the compressor body, and cools the compressed high-temperature air; a dry air supply mechanism that supplies dry air to an output side of the compressor body; and a mechanism that prevents reverse rotation of the compressor body while the compressor is out of service.

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
• F04B 39/16 - Filtration; Moisture separation
• 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
• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04C 29/04 - Heating; Cooling; Heat insulation

Abstract

This inkjet printer that comprises: a print head which includes a charge electrode for imparting a charge amount corresponding to a printing character to ink particles, a deflection electrode for causing the ink particles having passed through the charge electrode to be deflected in accordance with the charge amount, and a gutter for collecting non-charged ink particles that are not used for the printing; a control unit which supplies a charging voltage to the charge electrode on the basis of a character pattern corresponding to printing character information; and an inspection instrument which imports an image of a result of printing printed on a print object and checks the printing state. In this inkjet printer, the inspection instrument computes a dot position deviation between the dot position of an attention dot preset for each printing character and a target position of said attention dot, stores computed dot position deviations in chronological order, and determines an ink state of the ink in use on the basis of the stored dot position deviations.

IPC Classes  ?

• B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
• B41J 2/01 - Ink jet
• B41J 2/195 - Ink jet characterised by ink handling for monitoring ink quality

Abstract

This power conversion device comprises: a power conversion unit that converts a DC voltage to an AC voltage applicable to a device to be operated; a current detection unit that detects the output current output from the power conversion unit; a storage unit that stores the reference value of the output current detected by the current detection unit or the reference value of a value to be monitored from the device to be operated and the upper and lower limit values determined from the reference value; and a control unit that controls the power conversion unit. The control unit calculates the frequency of the state of exceeding the upper limit value or the frequency of the state of less than the lower limit value and determines whether there is an abnormality or not by comparing the frequency with a predetermined frequency.

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

Abstract

Provided is a scroll compressor in which the swinging of an orbiting scroll can be suppressed and the power loss can be suppressed.　The scroll compressor comprises a fixed scroll 11 having a spiral wrap 16, an orbiting scroll 12 having a spiral wrap 20, a drive shaft 13 that causes the orbiting scroll 12 to revolve with respect to the fixed scroll 11, a plurality of compression chambers formed between the wrap 20 of the orbiting scroll 12 and the wrap 16 of the fixed scroll 11, a back pressure chamber 28 formed on the back surface side of the orbiting scroll 12, and a communication hole 29 formed in the orbiting scroll 12 such that the back pressure chamber 28 and the compression chamber communicate with each other therethrough. The back pressure chamber 28 communicates with the compression chamber during a discharge process via the communication hole 29 when the crank angle of the drive shaft 13 is within a first range and communicates with the compression chamber during a compression process via the communication hole 29 when the crank angle of the drive shaft 13 is within a second range.

IPC Classes  ?

• 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

Abstract

This management system comprises: a measured data acquisition unit that acquires measured data, which is time-series data related to operation of a device; an index computing unit that computes an index on the basis of the measured data; a credit calculation unit that compares indices before and after a change is made to the device, to calculate a credit as a compensation for a reduction in the emission of greenhouse gas; and a credit management unit that links a part of the calculated credit to a user of the device. The credit management unit links a part of the calculated credit to a system operator or a manufacturer of the device.

IPC Classes  ?

• G06Q 50/00 - Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism

Abstract

A control device 1 is provided with: a motor control unit (10, 11, etc.) that supplies a drive current to a motor 3, which is a power source of processing equipment, so as to place the motor 3 in a normal operating state, and, in response to multiplexed commands (S1, S2) that are sent from the outside and relate to a safety function operation of the processing equipment, controls the drive current so as to place the motor 3 and the processing equipment in a safety stop state; and a command monitoring unit 16 that monitors whether or not the commands (High/Low of S1, S2) match each other. If the period during which the commands do not match exceeds an allowable value, the command monitoring unit 16 generates a safety stop signal Sd (High) for safely stopping the motor 3, and continuously sends the safety stop signal Sd (High) to the motor control unit. This configuration makes it possible to facilitate the construction of a safety system that uses a control device.

IPC Classes  ?

• G05B 9/02 - Safety arrangements electric

Abstract

Provided is an electric switchboard which resists temperature rise by reducing heat intrusion from the outer surface due to exposure to sunlight. This electric switchboard comprises a box body 10 in which a substation facility is housed, a door 11 provided on the box body, and a side plate 17 provided on a side of the box body. At least one of the front, rear, and side surfaces of the switchboard is provided with a light-shielding member that is retractable and blocks sunlight. Thus, heat intrusion from the outer surface due to exposure to sunlight is reduced, and temperature rise of the electric switchboard is prevented.

IPC Classes  ?

• E04F 10/06 - Sunshades; Awnings of flexible canopy materials, e.g. canvas comprising a roller-blind with means for holding the end away from a building
• E06B 9/24 - Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance
• E06B 9/13 - Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
• E06B 5/00 - Doors, windows, or like closures for special purposes; Border constructions therefor
• H05K 7/18 - Construction of rack or frame
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• H02B 1/30 - Cabinet-type casings; Parts thereof or accessories therefor

Abstract

Provided is a scroll compressor capable of suppressing a reduction in coolability of a radially outer section of an orbiting scroll.　The scroll compressor includes a cooling fan 25 and a cooling-air introducing path 28 that introduces cooling air generated at the cooling fan 25 into the surroundings of cooling fins 20 of an orbiting scroll 12. The cooling fins 20 include: an n-th cooling fin that is located at one side in the width direction of the cooling-air introducing path 28 parallel to an array direction of the cooling fins 20 and at an outer side of the cooling-air introducing path 28; an (n-1)-th cooling fin that is adjacent to the n-th cooling fin at the one side; and an (n+1)-th cooling fin that is adjacent to the n-th cooling fin at the other side. The leading edge of the n-th cooling fin is located downstream of an imaginary straight line connecting the leading edge of the (n-1)-th cooling fin and the leading edge of the (n+1)-th cooling fin.

IPC Classes  ?

• 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
• F04C 29/04 - Heating; Cooling; Heat insulation

Abstract

This analysis system comprises a gateway device including a data processing unit for collecting apparatus data from an apparatus and determining the presence or absence of an abnormality in the collected apparatus data in accordance with determination rules, and an analysis server including an analysis unit for exchanging information with the gateway device and analyzing the received information, and an input/output unit for inputting and outputting server determination rules, wherein: the gateway device transmits, to the analysis server, transmission data including a determination result obtained by the data processing unit, and the apparatus data; the analysis server analyzes the transmission data, and if the apparatus data includes apparatus data indicating an abnormality different from an abnormality defined by the determination rules, updates information relating to the server determination rules on the basis of input information and transmits the updated information to the gateway device; and the gateway device updates information relating to the determination rules on the basis of the information relating to the server determination rules.

IPC Classes  ?

• G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance
• G06F 11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation

Abstract

The present invention comprises: a stator core (21) having a slot (21a); a bobbin (22) that is fit into the slot (21a) and that has a through-hole (22c) which penetrates in the axial direction of the stator core (21); a coil (23) which is inserted into the through-hole (22c); a plurality of protrusions (22e) that protrude from the inner circumference of the through-hole (22c) and/or from the outer circumference of the coil (23), and that guide the positioning of the coil (23) in the through-hole (22c); and a resin which, in the through-hole (22c), is filled into the area around the coil (23).

IPC Classes  ?

• H02K 3/46 - Fastening of windings on the stator or rotor structure
• H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
• H02K 15/04 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
• H02K 15/12 - Impregnating, heating or drying of windings, stators, rotors or machines

Abstract

This power conversion device includes: a plurality of switching elements; a drive unit that drives gates with respect to the switching elements; and a control unit that outputs a control signal to the drive unit. The drive unit includes a voltage monitoring unit that, on the basis of the gate resistance connected to a switching element and the gate resistance potential-difference, detects abnormalities in connection with the switching element.

IPC Classes  ?

• H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
• 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
• H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT

Abstract

The purpose of the present invention is to precisely estimate the necessary electric constant for control of a three-phase induction motor for which the electric constant is unknown.　In order to achieve this purpose, the present invention provides a three-phase induction motor, a fixing mechanism that can fix a rotary shaft of the three-phase induction motor, an inverter that drives the three-phase induction motor, a current detection means that detects the current of the three-phase induction motor, and a drive device that is for an induction motor, that reads a current value detected by the current detection means, and that controls the three-phase induction motor via the inverter, wherein: when the three-phase induction motor is in a state in which the rotary shaft is fixed by the fixing mechanism, the inverter is used to pass a direct current and a three-phase alternating current and the control voltage obtained as a result of the current passage is used to measure the electric constant of the three-phase induction motor.

IPC Classes  ?

• H02P 21/16 - Estimation of constants, e.g. the rotor time constant

Abstract

Provided are an apparatus monitoring system and monitoring method capable of reducing the load on an external terminal that monitors a plurality of apparatuses, and performing, inter alia, verification of the plurality of apparatuses. The apparatus monitoring system is provided with: a plurality of apparatuses 100 each having an electric motor 105, a mechanism unit 107 driven by the electric motor 105, a control unit 103 for controlling power supplied to the electric motor 105, and a communication unit 109; and, an external terminal 201 connected by wireless communication to the control unit 103 via the communication unit 109 of the plurality of apparatuses 100. When the number of the apparatuses 100 already paired with the external terminal 201 is larger than the number with which the external terminal 201 can communicate at one time, the external terminal 201 determines the control unit 103 of which apparatus 100, among the plurality of apparatuses 100, to connect to on the basis of a set sequence.

IPC Classes  ?

• H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• F04B 41/02 - Pumping installations or systems specially adapted for elastic fluids having reservoirs
• F04B 41/06 - Combinations of two or more pumps
• F04B 49/06 - Control using electricity
• H04W 76/10 - Connection setup
• H04W 84/10 - Small scale networks; Flat hierarchical networks

Abstract

This data sharing device comprises: a first environment which has a first communication port; a second environment which has a second communication port and which operates independently from the first environment; and a shared memory which can be accessed by both the first environment and the second environment. The first environment comprises a data reception unit that stores, in the shared memory, data received via the first communication port. The second environment comprises: a dedicated memory which can be accessed only from within the second environment; a data acquisition unit that writes data stored in the shared memory to the dedicated memory; an inspection unit that confirms the safety of the data stored in the dedicated memory; and a data transmission unit that transmits the data stored in the dedicated memory to the outside, via the second communication port.

IPC Classes  ?

• G06F 21/56 - Computer malware detection or handling, e.g. anti-virus arrangements
• G06F 12/14 - Protection against unauthorised use of memory

Abstract

The purpose of the present invention is to provide a switch the size of which can be reduced.　In order to achieve the purpose, this switch is configured to have: a main circuit section which is formed from a vacuum interrupter equipped with an opening/closing part formed from a stationary electrode and a movable electrode to be separated from or brought into contact with the stationary electrode, a first bushing conductor electrically connected to a stationary conductor connected to the stationary electrode and pulled out to the outside of the vacuum interrupter, and a second bushing conductor electrically connected to a movable conductor connected to the movable electrode and pulled out to the outside of the vacuum interrupter; and an operation unit which is directly connected to the movable conductor pulled out to the outside of the vacuum interrupter and carries out operation of the opening/closing part by moving the movable electrode, wherein the operation unit is integrally molded with the main circuit section by using a solid insulating member.

IPC Classes  ?

• H01H 33/662 - Housings or protective screens
• H01H 33/666 - Operating arrangements

Abstract

The present invention provides a management device capable of detecting the sensing of an abnormality (degradation) of a power transmission mechanism more precisely and accurately. A management device 30 for a power transmission mechanism that transmits a driving force from an electric motor 13 to a load-side device 12 comprises a current acquisition unit that acquires a current value of the electric motor 13 per unit process for driving the power transmission mechanism, a feature calculation unit 121 that divides the unit process into a plurality of sections and calculates an average current value by averaging the current values of the respective sections, and a diagnosis unit 122 that detects an abnormality. The diagnosis unit 122 calculates a state quantity estimation value on the basis of the average current value of the plurality of sections, and detects an abnormality in unit process on the basis of the state quantity estimation value.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• G01M 13/02 - Gearings; Transmission mechanisms

Abstract

The present invention is configured so as to: calculate a prediction error occurring on a movement path between an accuracy decrease position and an accuracy restoration position; and, if the prediction error exceeds an allowable error, change a reference station that receives a correction signal.

IPC Classes  ?

• G01S 19/43 - Determining position using long or short baseline interferometry
• E01C 19/23 - Rollers therefor; Such rollers usable also for compacting soil
• G01S 19/07 - Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
• G01S 19/49 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system whereby the further system is an inertial position system, e.g. loosely-coupled
• G05D 1/02 - Control of position or course in two dimensions

Abstract

This communication system includes a management apparatus connected to terminals. Each of the terminals has a log information management unit that collects log information and transmits the information to the management apparatus; a failure self analysis unit that analyzes, from the log information, the presence or absence of an abnormal event in the terminal and decides a self-restoration process; a restoration notification transmission unit that notifies the management apparatus of the self-restoration process with respect to the abnormal event; and a self-restoration processing unit that executes a restoration process with respect to the abnormal event or the self-restoration process ordered from the management apparatus. The management apparatus has: a failure analysis unit that analyzes the presence or absence of an abnormal event in the terminal on the basis of the log information collected from the terminal and decides a restoration process; a restoration notification reception unit that receives, from the terminal, notification about the self-restoration process with respect to the abnormal event; and a restoration order unit that commands the terminal to execute an order for the restoration process with respect to the abnormal event detected by the failure analysis unit in accordance with the presence or absence of notification.

IPC Classes  ?

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

Abstract

Provided is a liquid supply type screw compressor capable of saving energy by reducing the shaft power required for stirring liquid.　The liquid supply type screw compressor has: a male rotor side bore 22A in which a teeth part 13A of a male rotor 11A is housed; a female rotor side bore 22B in which a teeth part 13B of a female rotor 11B is housed; a low pressure side cusp 23 and a high pressure side cusp 24 that are boundaries between a wall surface of the male rotor side bore 22A and a wall surface of the female rotor side bore 22B; and a pocket 29 located adjacent to the low pressure side cusp 23 in the rotor axial direction, and formed to be depressed outward in the rotor radial direction relative to the wall surface of the male rotor side bore 22A and the wall surface of the female rotor side bore 22B. The pocket 29 is formed by inclined surfaces 30A, 30B. The inclined surface 30A extends from the wall surface of the male rotor side bore 22A beyond a virtual plane C1 including the low pressure side cusp 23 and the high pressure side cusp 24.

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

Abstract

Provided is a circuit breaker comprising: power source-side and load-side connecting plates for wiring; a connecting conductor; and an insulating stand that is attached to a body case and supports the connecting plates, wherein the insulating stand is a cylindrical member, and has an attachment part provided at an outer periphery, a first body case insertion part extending in one direction with respect to the attachment part, and a second body case insertion part extending in the other direction, the first body case insertion part being longer than the second body case insertion part. When the circuit breaker is used as a front surface type, the first body case insertion part of the insulating stand is inserted into an opening of the body case, and the power source-side and load-side connecting plates are supported by the first body case insertion part so as to become parallel to the circuit breaker, and when the circuit breaker is used as a back surface type, the second body case insertion part of the insulating stand is inserted into the opening of the body case, and the power source-side and load-side connecting plates are supported through the insulating stand so as to become perpendicular to the circuit breaker.

IPC Classes  ?

• H01H 71/02 - Housings; Casings; Bases; Mountings

Abstract

A screw compressor includes a screw rotor including a rotor tooth portion and a discharge-side shaft portion, and a casing having a housing chamber that houses the rotor tooth portion, an axial hole through which the discharge-side shaft portion penetrates, and a liquid supply passage that guides liquid to the axial hole. A second axial portion disposed in the axial hole of the discharge-side shaft portion and the axial hole of the casing have a first facing surface and a second facing surface facing each other with a gap therebetween. The discharge-side shaft portion has an annular groove on the first facing surface, and the liquid supply passage opens at a position facing the annular groove on the second facing surface of the axial hole. The second axial portion of the discharge-side shaft portion and the axial hole of the casing have a tapered structure as a structural portion where the diameter decreases in a direction away from the rotor tooth portion in a region farther from the rotor tooth portion than the annular groove portion.

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 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Abstract

This system receives a first location data set representing a first positioning location of a shipped product at a first frequency, and receives a second location data set representing a second positioning location of the product at a second frequency. The system displays, on a map, at least one among: n first location display objects respectively representing n first locations based on N first location data sets; and m second location display objects respectively representing m second locations based on M second location data sets. The display modes of the n first location display objects and the m second location display objects differ from each other. The type of location positioning or the number of satellites differs between the first positioning location and the second positioning location.

IPC Classes  ?

• G01S 19/48 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
• G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
• G06Q 10/0833 - Tracking

Abstract

A male rotor of a screw compressor has a cooling flow path extending axially inside a discharge-side shaft portion. A groove structure is provided in at least part of an area between the position of a discharge-side end surface of the male rotor and the attachment position of a discharge-side bearing in the wall surface of the cooling flow path. The groove structure is constituted of axially spaced grooves having a length-directional component in the circumferential direction of the screw rotor. A nozzle of a stationary member is spaced from the wall surface within the cooling flow path. The nozzle is disposed so as to overlap at least part of the groove structure at an axial 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
• F04C 29/04 - Heating; Cooling; Heat insulation

Abstract

Provided are a temperature indicator manufacturing system and a temperature indicator manufacturing method that reduce the labor and cost of management associated with temperature indicator manufacturing. This temperature indicator manufacturing system comprises: a marking device 12 that marks, on a base material, a temperature detecting material including a matrix material and a temperature indicating material containing at least a leuco dye, a developer, and a decoloring agent; and an adhesive application device 13 that applies an adhesive onto the temperature detecting material marked on the base material, wherein the adhesive is applied in a state in which the temperature sensing material marked on the base material has solidified, and the adhesive solidifies before the temperature detecting material marked on the base material liquefies.

IPC Classes  ?

• G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance
• C09J 11/00 - Features of adhesives not provided for in group , e.g. additives
• C09J 201/00 - Adhesives based on unspecified macromolecular compounds
• 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

Abstract

Provided is a cubicle in which measures against temperature rise can be more efficiently taken while reducing heat intrusion from the outer surface due to the radiation of the Sun. This cubicle comprises: a box 10 for housing power receiving and transforming equipment; a door 20 with which the box is provided; a side plate 40 with which a side portion of the box is provided; and light shielding plates 22, 42 attached to the door and the side plate and preventing direct sunlight. The light shielding plates 22, 42 are tilted and attached so that the distance between the light shielding plates 22, 42 and the wall surface widens at an upper portion as compared with that at a lower portion, thereby facilitating the flow of air toward the upper portion.

IPC Classes  ?

• H02B 3/00 - Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
• H02B 1/30 - Cabinet-type casings; Parts thereof or accessories therefor
• H02B 1/56 - Cooling; Ventilation
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

In this compressor system, comprising a plurality of compressors and a compressor control device that controls the operation of the plurality of compressors, each of the compressors includes a filter that filters air, a compressor body that compresses air, and a detection means that detects a physical quantity correlated with the pressure loss of the compressor body. The compressor control device preferentially operates compressors having a higher power efficiency according to the physical quantity detected by the detection means among the plurality of compressors, and restricts the operation of compressors having a lower power efficiency.

IPC Classes  ?

• F04B 49/06 - Control using electricity

Abstract

Provided is a crane device with which it is possible for the workload involved in setting action information to decrease when general-purpose inverters are used, and with which it is moreover possible to easily confirm the action information.　A crane device comprising a plurality of driving electric motors including at least a winding electric motor (3) and a movement electric motor (5), general-purpose inverters (16, 17) for controlling each of the driving electric motors, and a higher-level control means (30) that is connected to each of the inverters via a communication unit and that controls the inverters, wherein the higher-level control means (30) is provided with an action information conversion means (32) for converting action information so as to correspond to action information of each of the inverters.

IPC Classes  ?

• B66D 1/46 - Control devices non-automatic electric
• B66C 13/00 - Other constructional features or details
• B66C 13/46 - Position indicators for suspended loads or for crane elements

Abstract

The present invention prints, on a printing target, prescribed information constituted by dots formed by ink discharged onto the printing target, images the prescribed information, and detects a print area from the image in which the prescribed information was captured. A reference position grid is generated provided with dots serving as references for inspecting impact positions of the dots in each dot area obtained by dividing the print area into prescribed dot areas. The impact positions are inspected and read on the basis of a superimposed image obtained by superimposing the print area and the reference position grid, and a determination grade reference table for determining the degree of deviation of the impact positions of the dots relative to the positions of the dots serving as the references. A feedback signal for correcting the impact positions is generated on the basis of the inspection result and correction data for defining a correction amount of the dots constituting the print area determined in accordance with the degree of deviation. The feedback signal is output to an inkjet printer, and ink is discharged onto the printing target on the basis of the corrected impact positions of the dots obtained from the feedback signal.

IPC Classes  ?

• 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 2/12 - Ink jet characterised by jet control testing or correcting charge or deflection

Abstract

This rotating electric machine comprises: a rotor (200); a stator core (110) having slots (111) provided with opening portions (112) on the rotor (200) side; bobbins (150) into which coils (140) fit in the slots (111) are inserted; projection portions (152) provided on the opening portion (112) side of the bobbins (150); and a resin (160) for fixing the stator core (110), the coils (140), and the bobbins (150).

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

Abstract

A capacitance acquisition unit acquires a plurality of initial capacitance values representing capacitance values of a smoothing capacitor in the initial state, and acquires a plurality of operating capacitance values representing capacitance values of the smoothing capacitor in the operating state, and a degradation-determining unit acquires characteristic information representing the relationship between AC power and the capacitance value of the smoothing capacitor in the initial state on the basis of statistics of the plurality of initial capacitance values acquired by the capacitance acquisition unit, and determines the degradation state of the smoothing capacitor on the basis of the statistics of the plurality of operating capacitance values acquired by the capacitance acquisition unit, and the characteristic information.

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

Abstract

This inkjet recording device can calculate the time at which a cartridge replacement indication and an ink or solvent replenishment indication are displayed, and can notify a user of an estimated time at which the replenishment of ink or solvent is needed. The inkjet recording device is structured to provide control to: calculate the consumption amount of ink or solvent per time from information on printing contents or the number of times of printing performed per time in the past, and operating information on a pump and an electromagnetic valve; divide the remaining amount of ink or solvent by the consumption amount of ink or solvent per time; and estimate in advance the time before an ink or solvent replenish indication is issued.

IPC Classes  ?

• B41J 2/175 - Ink supply systems
• B41J 2/01 - Ink jet
• B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet

Abstract

The present invention provides a liquid feed type gas compressor that makes it possible to minimize the discharge side temperature of a compressor body during restart.　An oil feed type air compressor 1 comprises: a compressor body 3 that is driven by an electric motor 2; a separator 6 that separates oil from compressed air which has been discharged from the compressor body 3; an oil supply system 8 that supplies, to an operation chamber of the compressor body 3, the oil which has been separated by the separator 6; an oil cooler 15 that is provided in the oil supply system 8 and that uses cooling airflow which has been generated by the cooling fan 13 to cool oil; and a control device 9. The control device 9 stops the electric motor 2 and the cooling fan 13 when the duration of load-free operation reaches a prescribed value. On the basis of the detection history of a discharge side pressure sensor 14, a resumption timing at which the electric motor 2 is restarted is predicted, and the discharge side temperature of the compressor body 3 at the resumption timing is predicted. When the predicted discharge side temperature exceeds a prescribed allowable value, the cooling fan 13 is restarted before the electric motor 2.

IPC Classes  ?

• F04B 49/02 - Stopping, starting, unloading or idling control
• F04B 39/06 - Cooling; Heating; Prevention of freezing

Abstract

The purpose of the present invention is to optimize the cleaning and replacement frequency of a compressed air pre-filter and a cooling air pre-filter.　To achieve said purpose, this gas compressor comprises: an intake filter in which a compressed air pre-filter that primarily removes dust is disposed in an intake port for compressed air in a housing, and that further secondarily removes dust; at least one compressor main body that suctions air through the intake filter and an intake passage and compresses the air; a motor that drives the compressor main body; an air cooler that cools the compressed air; a cooling fan that passes cooling air to the air cooler; a cooling air intake port that suctions from outside air with the cooling fan; a cooling air pre-filter provided to the cooling air intake port; and a control device that controls the operation of the compressor. The control device determines the cleaning and replacement frequency of the compressed air pre-filter and the cooling air pre-filter on the basis of a load factor serving as an indicator of an operating state.

IPC Classes  ?

• F04B 39/16 - Filtration; Moisture separation
• F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids

Abstract

The objective of the present invention is to provide a scroll type fluid machine with which it is possible to improve the sealing properties of an operating chamber.　A scroll type compressor is provided with: a fixed scroll 11 having an end plate 15 and a spiral wrap 16 provided upright on the end plate 15; an orbiting scroll 12 having an end plate 20 and a spiral wrap 21 provided upright on the end plate 20; a drive shaft 13 for causing the orbiting scroll 12 to orbit with respect to the fixed scroll 12; a tip seal 29 inserted into a seal groove 28 formed in the wrap 16 having the smaller spiral radius; and a tip seal 31 inserted into a seal groove 30 formed in the wrap 21 having the larger spiral radius. The tip seal 29 has a plurality of inside lips 36 formed on an inside surface 33, and a plurality of outside lips 37 formed on an outside surface 34.

IPC Classes  ?

• 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

Abstract

According to the present invention, a communication device management server calculates a transmission period correction value for each group on the basis of the amount of data used, and distributes the transmission period correction value to a communication device. The communication device corrects and updates a data collection period for each group on the basis of the transmission period correction value, and collects data from subordinate equipment on the basis of the updated data collection period obtained by the correction.

IPC Classes  ?

• H04W 24/02 - Arrangements for optimising operational condition
• H04L 67/00 - Network arrangements or protocols for supporting network services or applications
• H04M 11/00 - Telephonic communication systems specially adapted for combination with other electrical systems
• H04W 8/22 - Processing or transfer of terminal data, e.g. status or physical capabilities
• H04W 24/10 - Scheduling measurement reports

Abstract

Provided is a vacuum circuit breaker comprising a plurality of main circuit opening/closing parts, an operation mechanism part, a link mechanism part, and an operation panel, wherein: the link mechanism part is provided with a connecting arm (17) which is connected to the plurality of main circuit opening/closing parts and a link mechanism which is connected to the connecting arm (17); the operation mechanism part is provided with a mechanism part lever (321) which is connected to the connecting arm (17) via the link mechanism; and, by changing the position of the link mechanism that is connected to the mechanism part lever (321), it is possible, using the same operation mechanism part, to handle both a case in which the connecting arm (17) is disposed orthogonally to the operation panel and a case where the connecting arm (17) is disposed parallel to the operation panel.

IPC Classes  ?

• H01H 3/46 - Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
• H01H 33/42 - Driving mechanisms
• H01H 33/666 - Operating arrangements

Abstract

An inkjet recording device which is capable of preventing ink from being deposited while inactive, and also capable of adjusting the viscosity of the ink to a suitable range when the viscosity of the ink inside a main ink container deviates from a suitable viscosity range. The present invention is configured in a manner such that the process of supplying a solvent stored in a solvent container to a printing head and returning the same to an ink container via a circulation pathway and a collection pathway by controlling the printing head and a main body is repeated for each fixed time period when not actively printing by the printing head, wherein some of the ink stored in the ink container is discarded to the interior of the head-mounting unit from the printing head via a supply pathway and the viscosity of ink stored inside the ink container is reduced by supplying the solvent stored in the solvent container to the ink container while in a state in which the printing head is mounted to the head-mounting unit, when the viscosity of the ink measured by a viscosity measurement unit is higher than a pre-set prescribed range.

IPC Classes  ?

• B41J 2/195 - Ink jet characterised by ink handling for monitoring ink quality
• B41J 2/01 - Ink jet
• B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
• B41J 2/18 - Ink recirculation systems

Abstract

This oil feeding type compressor is provided with: a compressor body (2) that compresses gas while pouring oil; a first oil separator (6) that separates oil from the compressed gas that has been ejected from the compressor body (2); a second oil separator (8) that further separates oil from the compressed gas from which the oil has been separated by the first oil separator (6), and that has a storage unit (8bd) to store the separated oil; an ejection pipe system (9) through which the compressed gas from which the oil has been separated by the second oil separator (8) flows; an oil discharging path (10) that discharges the oil stored in the storage unit (8bd) from the storage unit (8bd); a valve body (10a) that is provided in the oil discharging path (10); and a control unit (11) that controls the degree of opening of the valve body (10a) on the basis of time.

IPC Classes  ?

• F04B 49/06 - Control using electricity
• F04B 49/10 - Other safety measures
• F04C 29/02 - Lubrication; Lubricant separation 

Abstract

Provided is a diagnostic system for a transformer having insulating oil and windings, the diagnostic system for a transformer comprising: a detection unit that detects the temperature and hydrogen at the upper and lower portions of the insulating oil; and a calculation unit that determines an abnormality, on the basis of detection values from the detection unit.

IPC Classes  ?

• H01F 27/00 - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - Details of transformers or inductances, in general

Abstract

This vacuum circuit breaker comprises a main circuit switching unit, an operating mechanism unit, and a link mechanism unit, wherein: the operating mechanism unit has a mechanism part that operates the switching of electrodes of the main circuit switching unit via the link mechanism unit; grease is applied, as a lubricant, to gaps between some moving sections of the mechanism part and pins that axially support said some moving sections, among gaps between moving sections of the mechanism part and pins that axially support the moving sections; a coating material is applied, as a lubricant, to gaps between other moving sections and pins that axially support said other moving sections, among the gaps between the moving sections of the mechanism part and the pins that axially support the moving sections; and as a result, lubricant performance can be maintained over a long period without requiring injection of the lubricant.

IPC Classes  ?

• H01H 33/42 - Driving mechanisms
• H01H 33/666 - Operating arrangements

Abstract

A power control device for executing power control on a plurality of power networks including an own-end power network and at least one other-end power network on the same electric power system, each network comprising a DC power source, a power conversion unit, a switch unit that shuts off power supply to each load, and a voltage measurement unit and a current measurement unit that measure an output from the power conversion unit. The power control device comprises: a storage unit that stores characteristic information of the power conversion unit and shut-off order information of the switch unit; and a load shut-off control unit that, when an overload has been determined on the basis of active power and the characteristic information, determines to shut off the switch unit in the own-end power network, on the basis of the number of shut-offs of the switch unit in the other-end power network detected on the basis of a voltage value or a current value, and the shut-off order information.

IPC Classes  ?

• H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network

Abstract

This gas-insulated switchgear equipped with a plurality of containers filled with insulated gas comprises: a high-voltage body; an insulation spacer disposed between the containers; and a fixing part that fixes the insulation spacer. The fixing part has a plurality of members different in thickness, in which a thin member is disposed at a portion for securing an insulation distance from the high-voltage body.

IPC Classes  ?

• H02B 13/02 - Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
• H02B 13/035 - Gas-insulated switchgear
• H02B 13/045 - Gas-insulated switchgear - Details of casing, e.g. gas tightness

Abstract

Provided is a gas-insulated switching device capable of suppressing increase of voltage between an arc shield of a vacuum circuit breaker and a contact electrode which is a voltage applying part, by raising an electrical potential of the arc shield.　In the gas-insulated switching device configured such that the vacuum circuit breaker is insulatingly supported in a grounding container, an arc-shield voltage-adjustment conductor (23) formed of a conductive material is disposed such that one end is electrically connected to a high-voltage conductor (12C) which is a power supply of the vacuum circuit breaker, and the other end is positioned in the vicinity of the vacuum circuit breaker (11) with a predetermined spatial distance (D) therebetween.

IPC Classes  ?

• H01H 33/662 - Housings or protective screens
• H02B 13/035 - Gas-insulated switchgear

Abstract

Provided is an inkjet recording device capable of automatically determining an optimum excitation voltage of a piezoelectric element for forming ink liquid droplets.　An excitation voltage value is applied in a plurality of sweeping events to a piezoelectric element of a nozzle (8) without energizing a deflection electrode so as to sweep from a high-voltage side to a low-voltage side in a prescribed voltage range (S11 to S15). Ink droplets generated at the applied excitation voltage value is given electric charge by applying a charge voltage thereto in a plurality of arbitrary printing phases. A charge amount given to the ink liquid droplets is detected by a charge amount sensor (25) to find a printing phase. If the relationship of a current printing phase to a previous printing phase detected for each sweeping event inverts from the increase side to the decrease side, and a decrease determination of the printing phase is established twice in a row (S16), an excitation voltage value corresponding to the printing phase of the sweeping event immediately before the first decrease determination is recognized as a final excitation voltage value (S17).

IPC Classes  ?

• B41J 2/025 - Ink jet characterised by the jet generation process generating a continuous ink jet by vibration
• B41J 2/01 - Ink jet
• B41J 2/085 - Charge means, e.g. electrodes
• B41J 2/09 - Deflection means