Provided is a non-inductive vector control-based permanent magnet synchronous motor operation control method, which is characterized in that: during motor operation, when a shutdown control signal sent by an external device is received, a microprocessor MCU does not directly execute PWM pulse blocking on an inverter, but continues to output a pulse to the inverter for speed reduction, and constantly detects control signals sent by the external device; during speed reduction, when a real-time operation rotating speed Vi of the motor is greater than or equal to a set rotating speed Vref, the microprocessor MCU re-acquires a new starting control signal, then a control motor approaches a target rotating speed V or target torque T corresponding to the re-acquired new starting control signal from the current real-time operation rotating speed Vi; when the real-time operation rotating speed Vi of the motor is less than the set rotating speed Vref, the microprocessor MCU executes PWM pulse blocking, and shuts down and blocks pulses after speed reduction, so that the torque at a predetermined position of the motor can stably stop a load, thereby avoiding jitter, jerking, noise and the like, reducing current impact and prolonging the service life of the motor.
Disclosed are an electric motor control unit having redundant control and an assembly method therefor, comprising: a power supply module, connected to mains electricity and outputting a corresponding VDC direct-current power supply to power other modules; an electric motor control module, one electric motor control module controlling one electric motor body; an I/O module, used for signal transmission between a client mainboard or a peripheral device and the electric motor control module; a redundant control module, the function thereof being to activate one standby functional module when any of the functional modules described above fails, thus ensuring that a client system can still work smoothly; and the standby functional module, a module having same functions as a first functional module or a second functional module or a third functional module. The functional modules are assembled and mounted together to form the electric motor control unit, the production thereof is flexible and convenient, has strong adaptability, and reduces research and development cycles; the production is quick and convenient, operational reliability is increased, aftersales maintenance is facilitated, and maintenance costs are reduced.
H02P 27/08 - 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 with pulse width modulation
3.
PARAMETERLESS POSITION-SENSORLESS PERMANENT MAGNET SYNCHRONOUS MOTOR CONTROL METHOD BASED ON MTPA
A parameterless position-sensorless permanent magnet synchronous motor control method based on maximum-torque-per-ampere (MTPA) is disclosed. The method comprises a current control mode and comprises: (1) calculating a target dr-axis current value Id_r* and a target qr-axis current value Iq_r* of a target current vector Idq in a (dr, qr) rotor reference frame by using a target current value Idq* of the target current vector Idq and a preset current-rotor angle .GAMMA.; (2) looking up a target voltage-rotor angle .ALPHA. through a MTPA look-up table ; (3) calculating a dv-axis current value Id_Ref and a qv-axis current value Iq_Ref; and (4) obtaining a target voltage angle .THETA.V. According to the method, an algorithm is simplified, the operation is simple, the occupation of chip resources is reduced, the cost is reduced, and a bottleneck problem of high dependence on a motor resistance Rs, inductance Lq, Lq and magnetic flux .LAMDA.m is solved.
Disclosed are a volute assembly (1) and an induced draught fan using sarne. The volute assembly comprises a volute (10) and a cover plate (11) installed at the bottom of the volute, wherein an inner cavity (12) capable of installing a wind wheel is enclosed by the volute and the cover plate, an air inlet (111) is provided in the cover plate, an exhaust pipeline (13) extends out of a side face of the volute, an air outlet (130) is formed in the end of the exhaust pipeline, the exhaust pipeline comprises a connecting section (131), a diffusion section (132), and an installation section (133), one end of the connecting section is connected to the volute, the other end of the connecting section is connected to the installation section by means of the diffusion section, the air outlet is provided in the end of the installation section, and the inner diameter D1 of the diffusion section gradually increases from the connecting section to the installation section. The volute injection rnolding difficulty and injection rnolding cost are reduced, the service life of a volute mold is prolonged, and noise is reduced without changing the size of the air outlet.
Disclosed are a combined electric motor controller and a combination method therefor. The combined electric motor controller comprises a power source module, an electric motor control module and an I/O module, wherein one electric motor control module controls one electric motor body, comprises a microprocessor, an IGBT inversion component and a heat dissipation apparatus, receives the power supply of a VDC power source and an externally input control signal, and outputs a power source to the electric motor body, so as to control a rotation speed or a torque or an air volume; the I/O module is used for carrying out signal transmission between a system main control board or a peripheral device and the electric motor control module; and each functional module is provided with an independent metal or plastic shell and a circuit board located in the shell, the functional modules are connected to each other by means of mutually matched connecting pieces, and are used for transmitting the power source or the control signal between the functional modules, and the heat dissipation apparatus is mounted inside or outside of the shell. The production mode of the combined electric motor controller is flexible and convenient, the adaptability thereof is high, the research and development period thereof is shortened, production is quick and convenient, maintenance and replacement are convenient, and maintenance costs are reduced.
A maintenance method for a heating, ventilation or air conditioning system, comprising a system control mainboard and a motor having digital signal processing capability. A data backup area is provided in a storage device in the system control mainboard. When the system control mainboard experiences a fault, a replacement new system control mainboard is connected to a compiler having a Bluetooth interface and communicates with a mobile phone via the compiler having the Bluetooth interface. The mobile phone is connected to a cloud server via a mobile communication network. The cloud server stores as backups operating parameters of various system control mainboards. Relevant information of the old system control mainboard that experienced the fault is inputted utilizing the mobile phone and uploaded to the cloud server. The cloud server searches for relevant operating parameters corresponding to the old system control mainboard that experienced the fault and re-writes into the storage device of the new system control mainboard via the mobile phone and the compiler having the Bluetooth interface to serve as the operating parameters of the new system control mainboard.
H04L 67/025 - Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
H04L 67/04 - Protocols specially adapted for terminal portability
H04L 67/10 - Protocols in which an application is distributed across nodes in the network
H04L 67/1097 - Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
7.
CONSTANT AIR VOLUME CONTROL METHOD FOR AN AIR SUPPLY DEVICE DRIVEN BY MULTIPLE MOTORS
_ ABSTRACT A constant air volume control method for an air supply device driven by multiple motors. The air supply device comprises at least two BLDC motors which respectively drive different fans and are located in one air duct; a constant air volume control function is stored in a constant air volume data processor; the constant air volume data processor sends an identical speed signal instruction to the BLDC motors, so that the rotational speeds of the BLDC motors during operation are the same as or equal to each other; each BLDC motor feeds back a motor operating parameter C to the constant air volume data processor, and the constant air volume data processor calculates a motor speed n for keeping the air volume constant and then sends the same speed signal instruction to the BLDC motors. 21 CA 3009707 2020-05-27
An automatic speed regulating ECM motor comprises a motor controller (1) and a motor body (2). The motor controller (1) includes a control circuit board on which a microprocessor, an IGBT module, and a motor operation parameter detection unit are arranged. The microprocessor is connected with a first temperature detection unit (5) and a second temperature detection unit (6), and both the temperature detection units (5, 6) are at different positions on the external of the ECM motor to detect temperatures T1 and T2 at different environmental locations. If the temperature difference between the temperature T1 and the temperature T2 is less than or equal to a set value T0, the microprocessor wilI select a first speed S1 and control the motor to run at the first speed S1 constantly. If the temperature difference between the temperature T1 and the temperature T2 is greater than the set value T0, the microprocessor will select a second speed S2 and control the motor to run at the second speed S2 constantly. Using two temperature detection units to generate a torque control command directly makes it simple in structure, easy to assemble and low in cost. 14
A method for controlling constant air volume of an electrical device with an air exhaust or air supply function. The method comprises: using a motor unit that does not have a controller, and establishing M constant air volume control functions Qi=F(n) corresponding to M air volume points CFMi in a microprocessor of a system controller, wherein Q can be input power, direct current bus current or torque, and n is the rotation speed of the motor; receiving or presetting a target air volume value IN-CFM; determining that the target air volume value IN-CFM is between two known air volume points CFMi and CFMi-1; calculating a constant air volume control function Q0=F(n) corresponding to the target air volume value IN-CFM by using the two determined air volume points CFMi and CFMi-1 in an interpolation method; and controlling a motor parameter Q0 and a rotation speed n, so that the motor operates along a curve defined by the constant air volume control function Q0=F(n), and therefore constant intake or output air volume of the electrical device is ensured. The method is simple in calculation, so that the cost is saved and the product structure is simplified.
F24F 11/75 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
An electrical device with a filter mesh blockage detection function, said electrical device comprising an air inlet, an air outlet, an air duct, a fan or a fan wheel, a fan motor, and an air filter mesh; the air filter mesh is mounted on the air duct, the fan motor drives the fan or the fan wheel rotation such that air enters the air duct from the air inlet and passes through the air filter mesh, and is then outputted from the air outlet; the fan motor, which does not have a controller, is used as an element for detecting air volume; a microprocessor, an inverter circuit, and a fan motor operating parameters detection circuit are arranged on a controller of the electrical device, and when detecting that the air volume is lower than a preset air volume, determine that the filter mesh is blocked and output an alarm signal, No hardware needs to be added, the structure is simple and compact, installation is convenient, and the cost is low.
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
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
11.
HALL ELEMENT SEALING STRUCTURE AND MOTOR USING SAME
A hall element sealing structure and a motor using same. The hall element sealing structure comprises a box (1), a hall circuit board (2), and a hall element (3) installed on the hall circuit board. A cavity (10) is formed in the middle of the box (1). A supporting boss (11) is disposed on the bottom wall of the cavity (10), and the bottom wall of the cavity (10) is recessed to form an installing groove (12). The hall circuit board (2) is supported on the top surface of the supporting boss (11), and the hall element (3) on the hall circuit board (2) extends into the installing groove (12). A sealant (4) is poured into the cavity (10). The sealant (4) seals the hall element (3) in the installing groove (12) and covers the outside of the hall circuit board (2). The sealing structure is simple in structure, convenient to install, and firm, has good sealing and waterproof performance and can work reliably.
An ECM. Current sensing units (HALL1, HALL2, HALL3, HALL4, HALL5) detect signals of a plurality of shift input lines (N1, N2, N3, N4, NS), wherein the signals are 24V low-voltage alternating-current signals or 115V or 230V high-voltage alternating-current signals. When the 24V low-voltage alternating-current signals are input into the shift input lines (N1, N2, N3, N4, N5), a second alternating-current input end of a power supply portion is connected to a second power input line L, and second input ends of the current sensing units (HALL1, HALL2, HALL3, HALL4, HALL5) are connected in parallel and then are connected to a common lead COM, wherein the 24V low-voltage alternating-current signals are input into the shift input lines (N1, N2, N3, N4, N5) through a protection circuit. The protection circuit comprises a plurality of circuit protection units; and each circuit protection unit is separately connected one shift input line and at least com- prises a diode (D1, D2, D3, D4, D5). The ECM has a simple structure and can conveniently replace a PSC motor or an ECM using a 24V AC signal as the shift input on the market, the replacement is simple, the wiring is convenient, and the cost is low. When the ECM using the 24V AC signal as the shift input on the market is replaced, false triggering of other power supply components in an air conditioning system due to a signal coupling phenomenon among the shifts can he effectively prevented and therefore the safety and re-
An air volume measurement method for a fan motor, comprising the following steps: A) establishing M constant air volume control functions Q i=F(n) corresponding to M air volume points CFM i in a microprocessor of a motor controller (2), where Q can be an input power or a DC bus current or a torque, and n is the rotation speed of the motor; B) starting the motor, and detecting a real time rotation speed n0 and a parameter Q0 of the motor after the motor enters a steady state, substituting the parameter Q0 into the plurality of constant air volume control functions Q i=F(n) corresponding to the plurality of air volume points CFM i to obtain a plurality of rotation speeds n i, comparing the real time rotation speed n0 with the corresponding plurality of rotation speeds n i, and determining between which two air volume points CFM i and CFM i-1 the real time detected air volume CFM0 is located; and C) calculating the real time detected air volume CFM0 using interpolation. The method of the present invention can accurately identify clogging of an air filter and output a signal alarm, employs a simple mathematical model, and has reliable control and high precision.
A motor controller (9) and a motor using same comprise a control box (1) and a control circuit board (2) mounted inside a cavity (11) of the control box (1); a control chip (3) is mounted on an outer edge of a top surface of the control circuit board (2); an outer wall of the control box (1) is recessed inwards to form a heat dissipation boss (12); a gap (13) is formed between a bottom surface of the heat dissipation boss (12) and a bottom wall of the cavity (11); a plurality of support bosses (14) are provided on an inner wall at the bottom of the cavity (11); an outer edge of the control circuit board (2) extends into the inside of the gap (13) and enables an outer surface of the control chip (3) to lie close against an inner surface of the heat dissipation boss (12); and the control circuit board (2) is supported on a top surface of the support boss (14). The structure is simple, and is convenient to mount. Whenever the motor controller is mounted, an outer surface of the control chip (3) can be adjusted to lie close against an inner surface of the heat dissipation boss (12), achieving good heat dissipation performance and high reliability.
A multifunctional ECM and an HVAC system using the same. The ECM comprises a tap detection circuit. The tap detection circuit is connected to a plurality of tap input lines. The ECM also comprises a first alternating-current input lead, a second alternating- current input lead, a common lead, a ground lead, a first jumper, and a second jumper. Each of the tap input lines is connected to a first input of a current sensing unit. The first jumper is connected to the second alternating-current input lead. The second jumper is connected to the common lead. Second inputs of the current sensing units are connected in parallel and then are connected to the common lead and the second jumper. The ECM has a simple structure, and can conveniently replace a PSC motor and an ECM using alternating-current input as a tap signal in the market. 26
The present invention discloses a method of constant airflow control of motor direct power control and a HVAC system using the same. The method comprises the following steps of: step A), starting a motor controller to receive a target airflow IN-CFM; step B), acquiring a corresponding function P=f(n) according to the target airflow IN-CFM; step C), entering a direct power controlled constant airflow control mode: controlling a motor to reach a steady working point (pt, nt) along a control track of the function P=f(n); step D), calculating the real-time input power Pi of the motor according to operating parameters of the motor, and calculating .DELTA.P=¦ Pt - Pi¦; step E), keeping the current working point if AP is less than a set value Pset; step F), calculating whether the operating time of a speed loop is reached if .DELTA.P is greater than or equal to the set value Pset, and keeping the current working point if the operating time of the speed loop is not reached; and step G), entering a speed control circuit to adjust the speed if the time is already reached, so as to realize a new working point (Pi, ni) on the track, i.e., letting pt=Pi and nt=ni, and returning to step C. The present invention is particularly suitable for the airflow control at a steady state, and has simple algorithm, low requirements for CPU operation, low cost and high control accuracy.
F24F 11/75 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
F24F 11/62 - Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
F24F 11/77 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02P 7/06 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
A constant torque control method for an ECM motor comprises the following steps: step A) the value of a target torque T0 from external inputs is obtained; if the motor is in a stopped state, the motor is started, and a microprocessor acquires the original value of the chopped output voltage P of a PWM signal; if the motor is in a running state, the microprocessor acquires the current value of the chopped output voltage P of the PWM signal, step B) the microprocessor calculates the value of the corresponding target bus current Itad by using the function Itad= F(T, P) on the basis of the values of the target torque T0 and the chopped output voltage P of the PWM signal, detects the real- time bus current Ibus; step C) the microprocessor compares the value of the target bus current Itad with the value of the real-time bus current Ibus on the basis of the detected real-time bus current Ibus, and performs closed-loop control. The mathematical model of the constant torque control method is simple, the algorithm is concise, the calculation requirement for CPU is low, the cost is low and the control precision is high.
A method for automatically correcting torqueincluding:presetting rotational speed of each gear by corresponding gear input lines of a microprocessor; providing a certain mechanism to select one rotational speed set; electing N power pointswithin a range of the rated power, acquiring a set of torque datacorresponding to each set of the rotational speed at each power point, and storing a total 2xN sets of torque data; allowing the motor to enter the torque correction mode;recording a steady torque Tadj when the motor operates in a steady state;and comparing the steady torque Tadj with a maximum gear torque Tmax,and selecting the set of torque data to which T[M]max belongs when the steady torque Tadj satisfies the relationship: 110% x T[M-l]max < Tadj<=110% x T[M]max, M=1, 2, ..., N; when M=1, T0max=0.
H02P 31/00 - Arrangements for regulating or controlling electric motors not provided for in groups , or
F24F 11/49 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
F24F 11/77 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
A brushless DC motor, including; a rotating shaft; a rotor assembly; a stator assembly; a casing; a rear cover; and a control box. The rotating shaft is connected together with the rotor assembly. The stator assembly is sleeved outside the rotor assembly. The casing is connected together with the stator assembly. The rear cover includes a rear bearing seat in the middle for receiving a rear bearing. A plurality of support legs protrudes outwards from a wall surface on the outer side of the rear bearing seat, and is supported and installed on a flanged. edge folded outwards from an end surface of the casing. One end of the rotating shaft is supported on the rear bearing. The control box is installed on the casing.
A motor, including: a motor body, the motor body including two ends; a damping ring, the damping ring including a bottom; a mounting bracket; a locking device; a control box; anda connection housing, the connection housing including two ends, and a sidewall. The damping ring is disposed on each end of the motor body. The bottom of the damping ringis supported by the mounting bracket. The damping ringis fixed on the mounting bracket by the locking device. One end of the connection housing is connected to a bottom of the motor body; the other end of the connection housing is connected to a top of the control box, A plurality of heat dissipation holes is arranged on the sidewall of the connection housing.
A fan system in combination with a DC brushless motor. The DC brushless motor includes: a shaft, a base, a stator assembly, a rotor assembly, a control box including a second cavity, and a circuit board. The fan system includes: a blower housing, a wind wheel, a first mounting bracket, and a second mounting bracket. The first mounting bracket is arranged at a first air inlet. The outer side of the first mounting bracket is connected to the upper end surface. The inner side of the first mounting bracket is provided with a first bearing, and the other end of the shaft is disposed on the first bearing. The second mounting bracket is arranged at a second air inlet. The outer side of the second mounting bracket is connected to the lower end surface.
A method for controlling air volume output by a motor. The method includes: 1) establishing functional relation formulas for air volume in a low torque interval and a high torque interval; 2) inputting a target air volume into a microprocessor control unit; 3) starting a motor under a torque to enable the motor to reach a steady state; 4) acquiring an adjustment coefficient under the torque, and calculating the air volume;5) comparing the target air volume with the calculated air volume; 6) re-recording a steady rotational speed after the motor reaches a new steady state under an increased or reduced torque, and recalculating the air volume in the new steady state; and 7) repeating steps 5) and 6) to adjust the torque until the calculated air volume is equal or equivalent to the target air volume.
F24F 11/75 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
G05D 7/06 - Control of flow characterised by the use of electric means
H02P 27/08 - 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 with pulse width modulation
A DC brushless motor having an external rotor, the motor including: a shaft, a stator assembly, an end cover, a housing, and a plurality of permanent magnets. The end cover includes a bearing. The housing includes: an inner wall, and an end. The shaft is connected with the stator assembly. The stator assembly is arranged inside the housing. The permanent magnets are positioned outside the stator assembly on the inner wall of the housing. The end cover is disposed on the end of the housing. The shaft is disposed on the bearing of the end cover.
A variable speed fan motor, including: a variable speed motor and a motor controller. The motor controller includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply unit. The gear detection circuit includes a plurality of Hall current sensing units. Each second power input line is connected with a first input end of each of the Hall current sensing units. Second input ends of the Hall current sensing units are connected in parallel, and are connected with a second AC input end of the power supply unit. An output end of the Hall, current sensing unit is connected with an input end of the microprocessor. The microprocessor selects operating parameters according to an energized signal of the second power input lines and controls the variable speed motor to operate in accordance with the selected operating parameters.
H02P 23/03 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for very low speeds
H02P 25/03 - Synchronous motors with brushless excitation
A fan motor, including: a variable speed motor and a motor controller. The motor controller includes: a microprocessor, an inverter unit, a gear detection unit, and a power supply unit. The power supply unit supplies power for each circuit. The gear detection unit is connected to a plurality of power input lines. Each power input line receives AC power from an AC power supply. The gear detection unit includes: a plurality of voltage detection circuits, and a plurality of thermal resistors. Each power input line is connected to a thermal resistor in series and matches up with a voltage detection circuit Each voltage detection circuit includes a thermo-sensitive resistor that is bound to the corrsponding thermal resistor via a thermal conductive element. The thermo- sensitive resistor detects a temperature signal of the thermal resistor and adjusts the voltage of the output end of the voltage detection circuit.
H02P 23/03 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for very low speeds
H02P 25/03 - Synchronous motors with brushless excitation
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
26.
CONNECTING STRUCTURE BETWEEN VOLUTE OF BLOWER AND CONVERSION INTERFACE
A connecting structure, including: a volute including an air inlet and an air outlet; and a conversion interface. A connecting part is disposed on an outer side of the air outlet. The connecting part includes: a lower plate; a lower lug protruding outward from each end of the lower plate; and an upper flange disposed above the lower plate. The conversion interface includes a sleeve. An upper plate protrudes from a rear part of the sleeve. Two upper lugs protrude outward from two ends of the upper plate, respectively. A lower flange is disposed on the rear part of the sleeve beneath the upper plate. The upper plate is disposed on the upper flange. The lower flange is disposed on a curved convex block that protrudes upward from an outer edge of the lower plate. The upper lug is disposed on the lower lug.
A rotor assembly, including: a permanent magnet, a rotor core, and a magnetic loop. The rotor core includes an annular ring including a central axial bore, and a plurality of magnetic induction blocks protruding outward from an outer side of the annular ring. A through hole is arranged on the magnetic induction block. A radial recess is formed between every two adjacent magnetic induction blocks for mounting the permanent magnet. An end plate and a base plate are disposed on an end surface and a bottom surface of the rotor core by injection molding, respectively. A connecting column passes through the through hole and connects the end plate and the base plate as a whole body. An end surface of the end plate protrudes upward to form a magnetic loop bracket. The magnetic loop is disposed on the magnetic loop bracket.
H02K 15/03 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
A blower system, including a permanent magnet motor and a wind wheel. The permanent magnet motor includes a stator assembly, a rotor assembly, and a motor controller. The rotor assembly includes a salient pole rotor including a rotor core and magnets embedded in the rotor core. The motor controller includes a microprocessor, a frequency inverter, and a sensor unit. The sensor unit inputs a phase current or phase currents, a phase voltage, and a DC bus voltage into the microprocessor. The microprocessor outputs a signal to control the frequency inverter which is connected to a winding of the stator assembly. The ratio between an air gap of the motor and the thickness of the magnets ranges from 0.03 to 0.065, and the ratio between the length of a pole arc and the length of the magnets ranges from 0.8 to 1Ø
F24F 11/77 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02P 21/00 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
29.
METHOD FOR CONTROLLING AIR VOLUME OUTPUT PROVIDED BY MOTOR AND AIR-CONDITIONING FAN SYSTEM
A method for controlling air volume including: 1) establishing a functional relation formula for air volume in a microprocessor control unit of a motor controller; 2) inputting a target air volume into the microprocessor control unit of the motor controller; 3) starting a motor by the motor controller under a torque to enable the motor to fall on a steady state; 4) recording the rotational speed in the steady state, and calculating an air volume in the steady state; 5) comparing the target air volume with the calculated air volume; 6) re-recording a steady rotational speed after the motor falls on a new steady state under an increased or reduced torque, and recalculating the air volume in the new steady state; and 7) repeating steps 5) and 6) to adjust the torque until the calculated air volume is equal or equivalent to the target air volume.
F24F 11/74 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
F24F 11/77 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
30.
METHOD FOR CONTROLLING AIR VOLUME OUTPUT PROVIDED BY MOTOR AND AIR-CONDITIONING FAN SYSTEM
A method for controlling air volume including; 1) establishing a functional relation formula for air volume in a microprocessor control unit of a motor controller; 2) inputting a target air volume into the microprocessor control unit; 3) starting a motor by the motor controller to enable the motor to achieve a rotational speed and fall on a steady state; 4) recording the torque and rotational speed in the steady state, and calculating an air volume in the steady state; 5) comparing the target air volume with the calculated air volume; 6) re-recording a steady torque after the motor falls on a new steady state under an increased or reduced rotational speed, and recalculating the air volume in the new steady state; and 7) repeating steps 5) and 6) to adjust the rotational speed until the calculated air volume is equal or equivalent to the target air volume.
F24F 11/74 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
F24F 11/77 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
31.
INTERFACE SIGNAL CONVERSION SUB-CIRCUIT BOARD FOR DC BRUSHLESS MOTOR
An interface signal conversion sub-circuit board for a DC brushless motor. The sub-circuit board is plugged into a motor controller, so that the motor controller communicates and matches with a user side control system; the sub-circuit board is provided with eight ports: an analog control signal input port, the signal thereof being converted by a signal conversion circuit (1) disposed on the sub-circuit board; a fan mode activation signal port, the signal thereof being converted by a signal conversion circuit (2) disposed on the sub-circuit board; a speed feedback signal port, connected to a signal conversion circuit (3) disposed on the sub-circuit board, and outputting n pulses for each rotation; a reserved signal port, the signal thereof being converted by a signal conversion circuit (4) disposed on the sub-circuit board; a COM port, being the grounding wire of a signal wire and controlling a signal common terminal; a DC power supply source port; and an R/T port, connected to a semi-duplex bidirectional communication circuit (5) disposed on the sub-circuit board. The ports of the sub-circuit board use a new electrical code, are relatively simple, and facilitate the matching of signals with a client user side control system, thereby forming a relatively universal standard and facilitating management and promoting application.
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
H02K 11/38 - Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
32.
SIGNAL TRANSDUCER AND CONTROL SYSTEM FOR ELECTRICAL EQUIPMENT COMPRISING THE SAME
A control system for electrical equipment, including a system controller, and a motor. The system controller outputs a plurality of rotation switch signals. The motor is a brushless DC motor. A signal transducer is connected between the system controller and the ECM. The signal transducer includes a rotation switch sensing circuit, a microprocessor controller, and an interface signal processing circuit; the rotation switch sensing circuit detects the rotation switch signals output from the system controller, and transmits the rotation switch signals to the microprocessor controller for processing; and the microprocessor controller is connected with the ECM via the interface signal processing circuit.
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
A volute mechanism for a blower. The volute mechanism includes: a volute, the volute comprising a cavity; a manometric interface; and an air switch. The cavity is arranged inside the volute for accommodating a wheel. The volute includes a side and a top, the side includes an air outlet, and the top is convex to form an annular boss. The manometric interface is disposed on the annular boss behind. the air outlet and in communication with the cavity; a line L1 is perpendicular to a cross section of the air outlet, a line L2 crosses a center point O1 of the volute and is perpendicular to the line L1. The manometric interface includes a center point O2. The center point O2 is disposed in an area formed by rotating the line L2 clockwise for an angle .alpha. between 5° and 10°.
Disclosed is a fan structure for adjusting a negative pressure of a pressure measuring interface, which comprises: a volute (1) and a pressure measuring interface (2). A cavity (11) for accommodating a wind wheel is formed at the middle of the volute (1), a volute through hole (12) is set on the volute (1), a pressure measuring through hole (21) is formed at the middle of the pressure measuring interface (2), the pressure measuring interface (2) is mounted on the volute (1), the pressure measuring through hole (21) communicates with the cavity (11), a turbulence block (22) protrudes from an end surface of the pressure measuring interface (2), and the turbulence block (22) is located in the cavity (11) and can rotate around the volute through hole (12) with the pressure measuring interface (2). By changing a structure of an even tail of a conventional pressure measuring interface, a turbulence block protrudes from an end surface of the pressure measuring interface, and by means of a principle of uneven air distribution, the turbulence block changes the direction of the airflow in the pressure measuring interface, thereby influencing the negative pressure output value of the pressure measuring interface. The angle of the turbulence block of the pressure measuring interface is changed through rotation to obtain different negative pressure output values, thereby meeting requirements for negative pressure output values of different fans.
G01F 1/34 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
F04D 29/40 - Casings; Connections for working fluid
35.
STRUCTURE FOR AUTOMATICALLY ADJUSTING PRESSURE-MEASURING PORT OF BLOWER
Disclosed is a structure for automatically adjusting a pressure-measuring port of a blower. The structure comprises a volute (1) and the pressure-measuring port (2), wherein a cavity (11) accommodating a wind wheel is provided in the middle of the volute (1), a pressure-measuring through hole (21) is provided in the centre of the pressure- measuring port (2), the pressure-measuring port (2) is mounted in a volute through hole (12) provided on the volute (1) and can be moved axially along the volute through hole (12), and the pressure-measuring through hole (21) is in communication with the cavity (11). By changing the position of the pressure-measuring port, the structure changes the negative pressure output value of the blower, thereby changing the performance of the blower. The structure is simple and of low costs, and can be used universally, being suitable for various blowers.
G01L 19/00 - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
A motor voltage conversion device, comprising a motor (1), a winding lead (2) led from the stator winding of the motor (1), and a conversion device; the conversion device comprises a socket (3) and a plug (4); a part of the winding lead (2) is electrically connected to the socket (3), and the other part of the winding lead (2) is electrically connected to the plug (4); the plug (4) is inserted into the socket (3) to change the connection of a multi-phase winding. The motor voltage conversion device has a simple structure, and is safe and reliable, thus facilitating voltage conversion.
A motor controller includes a mother circuit board including a microprocessor unit of the mother circuit board having a serial digital communication unit of the mother circuit board; and a daughter circuit board including a signal interface circuit having a microprocessor unit of the daughter circuit board and a serial digital communication unit of the daughter circuit board. The microprocessor unit of the mother circuit board communicates with a control system of a user terminal through the signal interface circuit. The serial digital communication unit of the daughter circuit board includes a software for presetting interface signals. The motor controller reduces the need for various types of daughter circuit boards.
A brushless DC motor structure including a motor body 1, a controller 2, and a fan radiator 3. The fan radiator 3 is mounted between the motor body 1 and the controller 2 to disperse heat from the motor body 1 and the controller 2. The brushless DC motor structure increases air flow on the surface of the motor body 1 and the controller 2 by the fan radiator 3 and speeds up heat dispersion, and meanwhile effectively controls the operating temperature of the motor body 1 and the controller 2. Thus, the brushless DC motor structure has an excellent heat dispersion effect, and failure rate has been largely reduced.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
39.
HEAT EXCHANGER SYSTEM HAVING AN EXTERNAL ROTOR MOTOR
A heat exchange system of the invention includes multiple grids, a blower including an external rotor motor and a wind blade, a compressor, and a box having multiple exhaust inlets. The exhaust inlets are disposed on the side of the box, the grid is disposed at an exhaust outlet of the box, the blower is disposed in the box and below the grid, and the compressor is disposed on bottom surface in the box. The blower is an external rotor axial fan, and the wind blade is disposed outside a rotor of the external rotor motor. The heat exchange system of the invention features simple structure, low cost, large air output, and good blowing effect, and is high efficient and power saving.
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid
F24F 13/30 - Arrangement or mounting of heat-exchangers
An axial flow fan for an external rotor, comprising an axial flow blade, a support, and an external rotor motor, wherein the support comprises an annular cylinder and multiple installation pins extended from the outside of the annular cylinder, and the axial flow blade is disposed on the installation pin, the annular cylinder is fit on an external rotor of the external rotor motor, and inner wall of the annular cylinder is interference-fit with outer wall of the external rotor. The invention features simple and convenient assembling, reliable connection, high production efficiency, low requirement for workers, and low production cost.
An adapter, containing at least an inlet portion, an outlet portion, and a transition portion. The inlet portion, the outlet portion and the transition portion are integrally formed, and the transition portion bends upwards whereby staggering the inlet portion and the outlet portion. The adapter is easy to assemble and disassemble, which makes it easy to connect the blower to an external equipment. Moreover, the adapter is integrally formed, features simple structure and is convenient to cast, all of which reduces time for production and mould opening, and thus decreases production cost.
A clock-detecting circuit, containing at least a microprocessor, a clock circuit, and a zero-cross detecting circuit. The clock circuit is connected to the microprocessor. The input end of the zero-cross detecting circuit is connected to the,utility power AC input. The output end of the zero-cross detecting circuit is connected to the input end of the microprocessor. The zero-cross detecting circuit operates to detect zero crossing points of the utility power AC input. The microprocessor operates to count the number of oscillation periods of the clock circuit in a time interval between two adjacent zero crossing points of the utility power AC input and to detect clock precision of the microprocessor according to the counted number. The circuit according to the invention features simple structure and low production cost, and is reliable and easy to be implemented.
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
H02P 7/00 - Arrangements for regulating or controlling the speed or torque of electric DC motors
A motor operating at two different voltages, containing at least: a stator, a rotor, multiple coil windings, a housing, a patch board, a connector socket having a terminal cap, a first plug, a second plug, and a base. The patch board is disposed on the housing. The connector socket, the first plug, and the base are disposed on the patch board. The terminal cap is disposed in the connector socket. The coil winding is directly electrically connected to the terminal cap. The first plug is inserted in the connector socket whereby connecting two in-phase coil windings in parallel. The second plug is disposed on the base as the motor operates at a low voltage, and the second plug is inserted in the connector socket whereby connecting two in-phase coil windings in series. The first plug is disposed on the base as the motor operates at a high voltage.
H02K 3/28 - Layout of windings or of connections between windings
H01R 29/00 - Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series/parallel selection
A starting circuit for a single-phase AC motor, consisting at least of a rectifying and voltage-stabilizing circuit, a control circuit with a zero-cross detecting circuit and a counter, and a bidirectional thyristor. The bidirectional thyristor is serially connected to a starting winding and a starting capacitor, the bidirectional thyristor, the starting winding and the starting capacitor are connected a utility power AC input. The input end of the rectifying and voltage-stabilizing circuit is connected to the utility power AC input. The output end of the rectifying and voltage-stabilizing circuit supplies power to the control circuit. The input end of the zero-cross detecting circuit is connected to the utility power AC input. The output end of the zero-cross detecting circuit is connected to the input end of the counter. The zero-cross detecting circuit detects zero crossing points of the utility power AC input and inputs the zero crossing points to the counter.
H02P 1/42 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
A stator for an external rotor motor, containing at least a stator core (1) having multiple teeth (4) and a shaft (3), a stator winding (2), multiple slots (5), a pair of end plates (6), a patch board (7) having a first through hole (8), a power wire (11), and a fastening device (9). The shaft (3) is disposed at the center of the stator core (1). The slot (5) is formed between adjacent teeth (4) of the stator core (1). The stator winding (2) is received in the slot (5) and wrapped around the teeth (4). The patch board (7) is disposed above one of the end plates (6). The shaft (3) passes through the first through hole (8) of the patch board (7). The fastening device (9) is disposed at the top of the patch board (7) and operates to fix the weld-connecting portion (10).
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
An injection-molded stator, including a stator core, a coil winding, and an end insulating plate disposed on one end of the stator core, a head of the coil winding and a power lead being electrically connected to each other and forming a connector, wherein an installation slot is disposed on the end insulating plate, and the connector is disposed in the installation slot, and encapsulated and fixed therein via sealant. The invention has the following advantages over the prior art: 1) the head of the coil winding is firmly connected to the power lead, and not easily to be broken or loosen; 2) the connector formed by the head of the coil winding and the power lead is conveniently encapsulated and positioned and features simple processing; 3) the connector is encapsulated by the sealant, which prevents oxidation and corrosion of the head of the coil winding; 4) the connector is reasonably and orderly distributed, and there is no safety defect.
H02K 1/12 - Stationary parts of the magnetic circuit
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
A sensing device for sensing a position of a rotor of a motor, the device being disposed on a stator, wherein the sensing device comprises a fixing frame, a PCB board, and a Hall component, the fixing frame comprises a positioning and buckling portion, a lead fixing portion, a PCB fixing portion, and a Hall fixing portion, the sensing device is connected to the stator via the positioning and buckling portion, the lead fixing portion operates to fix a power lead connected to a coil winding of the stator, the PCB board is disposed on the fixing frame via the PCB fixing portion, and the Hall component is disposed on the fixing frame via the Hall fixing portion and connected to the PCB board. The invention is connected to the stator via the positioning and buckling portion on the fixing frame, features a simple structure for assembling and accurate positioning. Moreover, the lead fixing portion, the PCB fixing portion and the Hall fixing portion on the fixing frame make it accurate and convenient to install or fix other electronic devices, for example, to fix the power lead connected to the head of the stator winding via the lead fixing portion, which protects the power lead from being broken or loosen.
A motor for a treadmill, containing at least a housing (1), a stator (2), a rotor (3) having a rotating shaft (4), a front end cover (9), a rear end cover (5), and a flywheel (13). The front end cover (9) and the rear end cover (5) are disposed on both ends of the housing (1), respectively. The stator (2) and the rotor (3) are disposed in the housing (1). A front end of the rotating shaft (4) extends from the housing (1). The flywheel (13) is disposed on the front end of the rotating shaft (4). The rotating shaft (4) is connected to the flywheel (13) via key (14). A sleeve (12) is fit on the front end of the rotating shaft (4). The sleeve (12) abuts against the flywheel (13). A locking device is disposed at the end of the rotating shaft (4) and tightly fixes the flywheel (13).
H02K 7/02 - Additional mass for increasing inertia, e.g. flywheels
A63B 22/00 - Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
F16D 1/06 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
H02K 5/15 - Mounting arrangements for bearing-shields or end plates
49.
STARTING CIRCUIT FOR SINGLE-PHASE AC MOTOR AND METHOD FOR STARTING SINGLE-PHASE AC MOTOR
A starting circuit for a single-phase AC motor, the single-phase AC motor comprising a main winding and a starting winding, and the starting circuit comprising a detecting circuit, a rectifying circuit, a triggering circuit, and a switch, wherein the detecting circuit is connected in series with the main winding, the switch is connected in series with the starting winding, the detecting circuit transfers current parameters of the main winding into detecting signals, the rectifying circuit processes the detecting signals and transmits the detecting signals to the triggering circuit, the triggering circuit controls the switch according to the detecting signals whereby controlling power-on and power-off of the starting winding, and the triggering circuit is a hysteresis comparing circuit.
H02P 1/42 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
A direct current drive motor includes a stator and a rotor disposed outside the stator, the stator includes a stator core, an end insulator and a coil winding, and the rotor includes a housing, a magnetic yoke shell and multiple magnetic tiles, wherein 36 slots are disposed on the stator core, the number of the magnetic tiles is 42, and thus 42 magnetic poles are formed. Cogging torque is effectively reduced and the motor vibrates only slightly and generates little noise, which greatly increases working life of the motor.
A stator, comprising a stator core, a plurality of windings and an insulating plate, a plurality of teeth protruding from the stator core, a plurality of slots being formed between adjacent teeth, and the stator winding being received in the slot and wrapped around the teeth, wherein winding wires of in-phase windings are firstly wrapped around two adjacent teeth and then cross four teeth. The wire winding method for a stator is simple, centralized and practical, fractional slot windings greatly reduce the cogging torquet, and thus the motor operates more smoothly, vibration and noise of the motor are reduced, the failure rate of the motor is decreased, and working life thereof is increased.
The invention discloses a stator, comprising a stator core, a plurality of windings and an insulating plate, a plurality of teeth protruding from the stator core, the winding being received in the slot and wrapping around the tooth, and the insulating plate being disposed on the surface of the stator core, wherein a plurality of cylinders is disposed on the insulating plate, a transition line of an in- phase winding between two adjacent teeth is hang on the cylinder; and a plurality of supporting mechanisms is disposed on the cylinder. The transition lines do not intersect each other in three-dimensional space and anti-phase windings are completed isolated, which effectively solve an insulation problem between windings and facilitate rapid winding for wire winding devices.
An external rotor for a direct current drive motor, comprising a side wall (1), an end cover (2) disposed at the bottom of the side wall (1), a cavity (3) formed therebetween, a plurality of openings (4) formed in the side wall (1), a base (5) disposed at the center of the end cover (2), and a center hole (7) connected to a transmission shaft of the motor and disposed at the center of the base (5); wherein the side wall (1) and the end cover (2) are integrally formed by injection molding, and a magnetic yoke shell (12) and a plurality of magnetic tiles (6) are received in the side wall (1). The side wall and the end cover integrally formed by injection molding and the magnetic yoke shell and the magnetic tiles received in the side wall facilitate easy production, good integrity, light weight and low cost.
A housing for an external rotor, comprising a side wall (1), an end cover (2) disposed at the bottom of the side wall (1), a cavity (3) formed therebetween, a plurality of openings (4) formed in the side wall (1), a base (5) disposed at the center of the end cover (2), and a center hole (7) connected to a transmission shaft of the motor and disposed at the center of the base (5). The base (5) is connected to the side wall (1) via multiple wind wheels (8). An air inlet (9) is disposed between adjacent wind wheels (8). The wind wheels generate axial airflow and dissipate heat from a motor winding, as the housing rotates in the forward direction or the reverse direction, the wind wheels generate axial airflow and dissipate heat from a motor winding, and the housing acts as a buffer and is capable of reducing vibration in operation.
An end cover for an external rotor motor. The external rotor motor has a stator core having a center hole, and the end cover including a body, a cylindrical connecting portion, and multiple protruding bars each having an arc-shaped top surface. The cylindrical connecting portion is extended from the center of the body and received in the center hole of the stator core, the protruding bars are disposed on outer surface of the cylindrical connecting portion and extended in an axial direction, and the arc- shaped top surface of the protruding bar is fit with inner wall of the center hole of the stator core. The end cover is accurately fit with a stator core, requires no further processing after die--casting and thus reducing production cost, and is capable of preventing aluminum scraps from entering a stator.
A motor with a wire fixing plate, has a stator core, a stator winding, a lead wire, and a wire fixing plate including multiple fixed portions. The wire fixing plate is made of insulating plastics, and the lead wire is fixed on the wire fixing plate via the fixed portions. The motor features firm fixation and good insulating property of a lead wire and a simple production process.
A starting circuit for a single-phase AC motor, comprising; a main winding, a detecting circuit, a rectifying and filtering circuit, a triggering circuit, a switching circuit and a starting winding. The detecting circuit is connected in series to the main winding for transforming current parameters thereof into detecting signals. The switching circuit is connected in series to the starting winding. The rectifying and filtering circuit processes the detecting signals and the processed detecting signals to the triggering circuit. The triggering circuit enables or disables the switching circuit according to the detecting signals, so as to energize or deenergize the starting winding. The starting circuit features high reliability, long lifetime, simple circuit structure, low cost, and small size.
H02P 1/42 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
H02P 1/02 - Arrangements for starting electric motors or dynamo-electric converters - Details
patents
