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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2373. Отображено 100.
05-01-2012 дата публикации

Electric compressor controller

Номер: US20120001575A1
Автор: Takashi Kubo
Принадлежит: Calsonic Kansei Corp

An electric compressor controller includes a compressor that compresses refrigerant of an air conditioning system; a motor that drives the compressor; an inverter that selectively control switching elements based on PWM pulse signals to supply drive power to the motor and heats the refrigerant by heat generated due to switching of the switching elements during a heating operation; temperature detectors each detects junction temperature of each of the switching elements; a drive controller that supplies the pulse signals to the inverter to control the inverter; and a slope varying unit that variably controls precipitous degree of rising/falling slope waveforms of the pulse signals based on the junction temperature detected by the temperature detectors. According to the electric compressor controller, efficiency for heating refrigerant is improved, so that its own heating ability is improved.

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Номер записи: 1
12-01-2012 дата публикации

Rinsing device and method for the operation thereof

Номер: US20120006415A1
Автор: Thomas Baur
Принадлежит: Individual

The invention provides a rinsing device, in particular for endoscopy, comprising an electrically driven pump, in particular a peristaltic roller pump, as well as a method of operating such a device. A control device is provided to detect and/or adjust a flow rate. In order to avoid an excessively high pressure in case of an unintended stenosis, e.g. kinking of the supply tube, or also intended stenoses, e.g. insertion of a narrow rinsing probe, a current-measuring device is provided to detect a current being received by the pump. The control device is adapted such that when the flow rate exceeds a prespecified limiting value and at the same time the current exceeds a first predetermined current value, the flow rate is reduced to a safe flow-rate value.

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Номер записи: 2
20-09-2012 дата публикации

Air conditioning apparatus

Номер: US20120234030A1
Автор: Koji Nakano, Masayuki Ishikawa, Mikihiko Ishii, Nobuya Nakagawa, Takayuki Hagita, Takayuki Takashige, Takeshi Hirano
Принадлежит: Mitsubishi Heavy Industries Ltd

Provided is an air conditioning apparatus that is capable of suppressing increases in volume and cost of the apparatus and performing more suitable overheating protection. An electric compressor is an inverter-integrated electric compressor integrally including a compressor, an electric motor that drives the compressor, and an inverter including a temperature sensor that detects the temperature in the vicinity of a semiconductor switching device, wherein a controller estimates a discharge temperature of the compressor on the basis of a correlation of respective pressure loading characteristics for the detected temperature of the inverter, for the rotational speed of the compressor, and for the motive force of the compressor in a refrigerating cycle.

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Номер записи: 3
20-09-2012 дата публикации

Pump system and method for operating the same

Номер: US20120235619A1
Автор: Hong Min Yun
Принадлежит: LSIS Co Ltd

Provided is a pump system. The pump system includes an AC (alternating current) electric motor, a converter, a smoothing unit, an inverter, a volt/hertz pulse width-modulation controller, and a main controller. The AC electric motor operates a pump which is a load. The converter receives AC power and converts the AC power into DC (direct current) power. The smoothing unit smoothes a DC voltage converted by the converter. The inverter converts the DC voltage output from the smoothing unit into an AC voltage. The volt/hertz pulse width-modulation controller applies switching voltage to a semiconductor switching device of the inverter. The main controller changes an operating frequency according to a load detected when the Ac electric motor is in operation and puts the AC electric motor to a sleep mode after determining a load operation status.

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Номер записи: 4
20-12-2012 дата публикации

Pump controller

Номер: US20120321484A9
Автор: David L. Phillips, Derrick Thanh Tran, Rufino Naval, Jr., Thang Quoc Dang
Принадлежит: XYLEM IP HOLDINGS LLC

The present invention provides a technique using current sensing to control the pressure at constant level without the direct sensing of the pressure. This technique will help to reduce dependency solely on switch or sensor and their non linearity and other associated problems such as the non-repetitive behavior, being affected by EMI etc. The technique includes using a pump controller featuring one or more modules configured to respond to one or more input signals containing information about current provided from a pump; and configured to provide one or more output signals containing information to control the pump to operate at a substantially constant pressure without the direct sensing of pump pressure. The one or more modules control the operation of the pump based at least partly on a table of characteristics related to voltage and current that is calibrated for each pump.

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Номер записи: 5
21-02-2013 дата публикации

Smart Blow-Down System for Variable Frequency Drive Compressor Units

Номер: US20130045118A1
Автор: Steven Dewayne Centers, Yan Tang
Принадлежит: Quincy Compressor LLC

A method and apparatus for blowing down a compressed air system when temperature is at or below a predefined temperature threshold is provided. Temperature sensors in the compressed air system monitor temperature and a control processor determines when the temperature is at or below the predefined temperature threshold. When it is determined temperature is at or below the predefined temperature threshold, the control processor operates a solenoid blow-down valve that depressurizes the compressed air system.

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Номер записи: 6
14-03-2013 дата публикации

Hydraulic transport device and electrohydraulic control module

Номер: US20130064699A1
Автор: Andreas Albert, Joachim Buhl, Marco Grethel, Martin Staudinger, Ronald Glas
Принадлежит: Conti Temic Microelectronic GmbH, Schaeffler Technologies AG and Co KG

A hydraulic transport device for transporting a hydraulic medium. The device includes at least one externally toothed gear pump that is driven by an electric motor, and a control device attached to the pump. A passive rotational speed detection element is arranged in the pump and interacts with an active rotational speed detection element that is arranged in the control device to detect the rotational speed of the pump shaft.

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Номер записи: 7
02-05-2013 дата публикации

Method and controller for operating a pump system

Номер: US20130108473A1
Автор: Juha Viholainen, Jussi TAMMINEN
Принадлежит: ABB Oy

A method and controller for operating pumps wherein each pump is modelled by a QH model indicating a high-efficiency region, a high-H region and a high-Q region and a rotational speed limit. A controller dynamically maintains a current set of operating pumps and controls their rotational speed (n). In steady-state operation, wherein the pumps operate in the high-efficiency region and below the rotational speed limit, all pumps of the current set are controlled together. If the pumps operate in the high-Q region or beyond the speed limit, a new pump is added to the current set, started and brought to a speed that produces flow. A balancing operation ( 12 - 3 ) follows the pump addition operation, wherein the speed of the pumps of the current set are adjusted for equal heads. If the pumps operate in the high-H region, a pump is removed from the current set of pumps.

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Номер записи: 8
20-06-2013 дата публикации

Hydraulic pressure producing system for automatic transmission and control method thereof

Номер: US20130156604A1
Автор: Haksung LEE, Jong Hyun Kim, Sanglok Song, Seungjae Kang
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A hydraulic pressure producing system for an automatic transmission, and a control method thereof may include a first hydraulic pump adapted to generate hydraulic pressure for shifting, a second hydraulic pump adapted to additionally generate hydraulic pressure when hydraulic pressure supplied from the first hydraulic pump is insufficient, an accumulator adapted to store hydraulic pressure excessively generated from the first hydraulic pump, and a control unit controlling the second hydraulic pump. The method may include operating the first hydraulic pump in a state of idle stop, predicting a finish point of the idle stop state, starting operation of the second hydraulic pump prior to a predetermined time from the predicted finish point, operating the second hydraulic pump with a predetermined maximum rotation speed, and operating the second hydraulic pump with a target rotation speed.

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Номер записи: 9
11-07-2013 дата публикации

System and method for compressor motor protection

Номер: US20130176649A1
Автор: Frank S. Wallis, Joseph James Rozsnaki
Принадлежит: Emerson Climate Technologies Inc

A system includes a refrigerant compressor including an electric motor, a current sensor that measures current flow to the electric motor, a switching device configured to close and open to allow and prevent current flow to the electric motor, respectively, a maximum continuous current (MCC) device that includes a resistance corresponding to a maximum continuous current for the electric motor, and a motor protection module. The motor protection module communicates with the MCC device, the current sensor, and the switching device and determines a first MCC value for the electric motor as a function of the resistance of the MCC device. The motor protection module also selectively sets a predetermined MCC to the first MCC and controls the switching device based on a comparison of the current flow to the electric motor and the predetermined MCC.

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Номер записи: 10
22-08-2013 дата публикации

Feed water pump control device

Номер: US20130216357A1
Автор: Masahiro Minami
Принадлежит: Fuji Electric Co Ltd

The presence or absence of boost pressure is determined from an error between F-P characteristics showing the relationship between the output frequency of an inverter and the power consumption and an actual operating point. When there is boost pressure, an amount of correction of linearized characteristics showing the relationship between quantity and discharge side pressure is automatically calculated based on the error, and the linearized characteristics are corrected. Subsequently, by carrying out a PID control in accordance with a target pressure obtained from post-correction linearized characteristics, the output frequency of an inverter unit is controlled, and an estimated constant end pressure control is carried out. Because of this, a pressure sensor or quantity sensor on a pump intake side is rendered unnecessary, and a simplification and reduction in cost of a feed water pump control device are possible.

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Номер записи: 11
07-01-2016 дата публикации

Pump Controller

Номер: US20160002942A1
Автор: Paul Harvey Orlando
Принадлежит: Individual

A pump controller and methods for adjusting a pump speed or pump run time based on one or more pump control data. The pump control data may include forecasted weather information and non-weather information. The pump controller can be controlled remotely.

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Номер записи: 12
05-01-2017 дата публикации

ELECTRIC MOTOR CONTROL FOR PUMPJACK PUMPING

Номер: US20170002805A1
Автор: II Victor, Sauers, Williams Bertrand Jeffery
Принадлежит:

A pumpjack is driven by an electric motor coupled to a gear box. A local drive controller controls the motor in accordance with a varying motor speed profile over a pumping cycle of the pumpjack. The drive controller determines, based on sensory feedback from the one or more sensors, a pumping cycle load profile, automatically determines, based on the pumping cycle load profile, a varying voltage profile, and controls the motor in accordance with the varying motor speed profile while applying the varying voltage profile to the motor. 1. A pumpjack motor system , comprising:an electric motor coupled to a gear box of a pumpjack;one or more sensors mounted to monitor at least one operating condition of the pumpjack during operation of the motor; anda drive controller coupled to the motor and operable to control the motor in accordance with a varying motor speed profile over a pumping cycle of the pumpjack, while applying voltage to the motor; determine, based on sensory feedback from the one or more sensors, a pumping cycle load profile;', 'automatically determine, based on the pumping cycle load profile, a varying voltage profile; and to', 'control the motor in accordance with the varying motor speed profile while applying the varying voltage profile to the motor., 'wherein the drive controller is configured to'}2. The pumpjack motor system of claim 1 , wherein the varying motor speed profile comprises an altered version of a stroke timing curve implemented during one or more previous pumping cycles of the pumpjack.3. The pumpjack motor system of claim 1 , wherein the varying motor speed profile comprises a plurality of target motor speeds corresponding to each of a plurality of discrete control periods within the pumping cycle of the pump jack.4. The pumpjack motor system of claim 3 , wherein the pumping cycle load profile comprises a plurality of torque loads corresponding to each of the plurality of discrete control periods.5. The pumpjack motor system of claim 3 , ...

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Номер записи: 13
07-01-2016 дата публикации

Pump device and method for controlling the same

Номер: US20160003251A1
Автор: Akhiro YAMANAKA, Ryuji ITOYAMA, Sachie Suzuki, Yuji Nonomura
Принадлежит: Ulvac Kiko Inc

[Object] To provide a pump device capable of stabilizing a suction flow rate irrespective of an outside air temperature and a control method therefor. [Solving Means] The control method for a pump device includes: outputting a drive signal for driving a motor at a rotation speed for discharging gas of the reference flow rate from the suction port of the pump main body; measuring a temperature of gas discharged from the suction port or a temperature of the pump main body by a temperature sensor attached to the pump main body; calculating an actual flow rate of the gas discharged from the suction port based on a temperature signal relating to the temperature of the gas included in an output of the temperature sensor; and correcting the drive signal such that the actual flow rate equals the reference flow rate and outputting the corrected drive signal to the motor.

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Номер записи: 14
04-01-2018 дата публикации

Air conditioning apparatus

Номер: US20180003424A1
Автор: Koji Nakano, Masayuki Ishikawa, Mikihiko Ishii, Nobuya Nakagawa, Takayuki Hagita, Takayuki Takashige, Takeshi Hirano
Принадлежит: Mitsubishi Heavy Industries Ltd

Provided is an air conditioning apparatus that is capable of suppressing increases in volume and cost of the apparatus and performing more suitable overheating protection. An electric compressor is an inverter-integrated electric compressor ( 10 ) integrally including a compressor ( 5 ), an electric motor ( 6 ) that drives the compressor ( 5 ), and an inverter ( 7 ) including a temperature sensor ( 11 ) that detects the temperature in the vicinity of a semiconductor switching device, wherein a controller ( 3 ) estimates a discharge temperature of the compressor ( 5 ) on the basis of a correlation of respective pressure loading characteristics for the detected temperature of the inverter ( 7 ), for the rotational speed of the compressor ( 5 ), and for the motive force of the compressor ( 5 ) in a refrigerating cycle ( 2 ).

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Номер записи: 15
08-01-2015 дата публикации

Intake profile for optimized utilization of motor characteristics

Номер: US20150008862A1
Автор: Joshua A. Shreve, Steven J. Ciavarini
Принадлежит: Waters Technologies Corp

Systems and methods for operating a stepper motor of a pump at a desired low velocity include memory for storing information corresponding to an intake velocity profile. The intake velocity profile represents an optimized acceleration curve for operating the stepper motor over a range of motor velocities during an intake cycle. A processor of a system controller dynamically accesses the memory during the intake cycle to acquire the information representing the intake velocity profile and issues a series of pulses to the stepper motor based on this information. In response to the pulses, the stepper motor accelerates in accordance with the optimized acceleration curve represented by the intake velocity profile. The optimized acceleration curve is based on the available torque of the stepper motor across a range of motor velocities and enables the motor to operate with greater torque utilization and less margin than traditional linear acceleration profiles.

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Номер записи: 16
10-01-2019 дата публикации

METHOD FOR DETECTING A BLOCKED VALVE OF A COOLANT COMPRESSOR AND A CONTROL SYSTEM FOR A COOLANT COMPRESSOR

Номер: US20190010939A1
Автор: KARP Ralf, WIGH Hans
Принадлежит: Nidec Global Appliance Germany GmbH

A method for detecting a blocked valve of a coolant compressor including a drive unit and a piston-cylinder unit for cyclical compression of a coolant, wherein the drive unit has an electric motor for driving the piston-cylinder unit, monitors the speed (ω) of the electric motor. A maximum speed (ω) of the electric motor is initially detected, and the following steps are carried out, as long as the speed (ω) of the electric motor substantially corresponds to the maximum speed (ω): determining a maximum value Xof a monitoring parameter (I, T) of the coolant compressor (1); determining a value Xof the monitoring parameter (I, T) after a first time period (t1) after determining the maximum value X; detecting a blocked valve if Xis less than Xand (X−X)/X≥Δapplies, wherein Δis predetermined. 1144. A method for detection of a blocked valve of a coolant compressor () having a drive unit () and a piston/cylinder unit for cyclical compression of a coolant , wherein the drive unit () has an electric motor for drive of the piston/cylinder unit , wherein the speed of rotation (ω) of the electric motor is monitored , wherein first , a maximal speed of rotation (ω) of the electric motor is detected and that the following steps are carried out , as long as the speed of rotation (ω) of the electric motor essentially corresponds to the maximal speed of rotation (ω):{'sub': 'max', 'b': '1', 'determination of a maximal value Xof a monitoring parameter (I, T) of the coolant compressor ();'}{'sub': 1', 'max, 'b': '1', 'determination of a value Xof the monitoring parameter (I, T) after a first time span (t) after the determination of the maximal value X;'}{'sub': t1', 'max', 'max', 't1', 'max', 'X', 'X, 'detection of a blocked valve, if Xis less than Xand (X−X)/X≥Δholds true, wherein Δis predetermined.'}20405. The method according to claim 1 , wherein Δis ≥0.2 claim 1 , preferably Δis z . claim 1 , particularly preferably Δis z ..31. Method The method according to to claim 1 , c claim 1 ...

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Номер записи: 17
09-01-2020 дата публикации

METERING PUMP AND METHOD FOR CONTROLLING A METERING PUMP

Номер: US20200011309A1
Автор: Gerz Sergei, KECHLER Valeri
Принадлежит:

A Metering pump includes a displacement element (), a drive system with an electric drive motor () driving the displacement element () and a control device () controlling the electric drive motor (). The control device () is configured in such a manner that it detects the current position of the displacement element (), detects the torque (M) of the electric drive motor () at several positions of the displacement element () and monitors the torque (M) in relation to the position of the displacement element (), and a method for controlling such metering pump. 1. A metering pump comprising:a displacement element;a drive system comprising an electric drive motor driving said displacement element and a control device controlling said electric drive motor, wherein said control device is configured to:detect a current position of the displacement element;detect a torque of the electric drive motor or to detect a drive force acting on the displacement element at several positions of the displacement element; andmonitor the torque or force in relation to the position of the displacement element.2. A metering pump according to claim 1 , wherein said displacement element is a membrane or a piston.3. A metering pump according to claim 1 , wherein said drive system further comprises an eccentric drive coupled to the displacement element and driven by the electric drive motor.4. A metering pump according to claim 1 , wherein the electric drive motor is a brushless DC motor or a stepping motor.5. A metering pump according to claim 1 , wherein at least one position sensor detects the position of the displacement element and is connected to said control device.6. A metering pump according to claim 1 , wherein at least one sensor detects a rotational angle of the electric drive motor.7. A metering pump according to claim 1 , wherein the control device is configured to detect the torque or the force along an entire travel of the displacement element.8. A metering pump according to ...

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Номер записи: 18
18-01-2018 дата публикации

Device and method for detecting an operating pressure of a fluid pump for a motor vehicle

Номер: US20180017050A1
Автор: BEHRENDT Gerald, Graf Rolf
Принадлежит:

A device for detecting an operating pressure of a fluid pump for a motor vehicle includes: a rotational speed detector configured to detect a rotational speed of the fluid pump; a pump current detector configured to detect at least one current of the fluid pump; a memory configured to store a pump current/rotational speed performance map with at least one pressure reference point; and a pressure determining device configured to determine a fluid pressure that prevails in the fluid pump based on the detected rotational speed, the detected current and the stored pump current/rotational speed performance map. 110-. (canceled)111100. A device () for detecting an operating pressure of a fluid pump () for a motor vehicle , the device comprising:{'b': 10', '100, 'a rotational speed defector () configured to detect a rotational speed of the fluid pump ();'}{'b': 20', '100, 'a pump current detector () configured to detect at least one current of the fluid pump ();'}{'b': '30', 'a memory () configured to store a pump current/rotational speed performance map with at least one pressure reference point; and'}{'b': 40', '100, 'a pressure determining device () configured to determine a fluid pressure that prevails in the fluid pump () based on the detected rotational speed, the detected current and the stored pump current/rotational speed performance map.'}12150100. The device as claimed in claim 11 , the device () claim 11 , further comprising a regulator () configured to provide a pressure regulation for the fluid pump () based on the determined fluid pressure.13130. The device as claimed in claim 11 , the device () being configured to use a reference valve to determine the at least one pressure reference point of the pump current/rotational speed performance map and to store it in the memory ().141. The device as claimed in claim 11 , the device () being configured to determine the at least one pressure reference point of the pump current/rotational speed performance map by a ...

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Номер записи: 19
21-01-2021 дата публикации

System for tire inflation

Номер: US20210016615A1
Автор: Brandon Richardson
Принадлежит: Aperia Technologies Inc

A system for tire inflation including a drive mechanism defining a rotational axis, including an eccentric mass that offsets a center of mass of the drive mechanism from the rotational axis along a radial vector; a pump arranged radially distal the rotational axis of the drive mechanism, including a chamber defining a chamber lumen, and a reciprocating element arranged at least partially within the chamber lumen and translatable along a pump axis; a drive coupler coupled between the drive mechanism at a first position and the reciprocating element at a second position fixed to the reciprocating element; a torque regulation mechanism; and a controller, communicatively coupled to the torque regulation mechanism; wherein the system is operable between at least a first mode and a second mode by the torque regulation mechanism in cooperation with the controller.

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Номер записи: 20
21-01-2021 дата публикации

PREDICTIVE PUMP STATION AND PIPELINE ADVANCED CONTROL SYSTEM

Номер: US20210017999A1
Автор: Fowler Edward A.
Принадлежит:

A method and controller for operating a pumping station. The method includes receiving (), by at least one controller (), sensor data () of a first pumping station () corresponding to a liquid being transported from the first pumping station (). The method includes predicting () arrival of the liquid, by the at least one controller (), at a second pumping station (). The method includes executing () one or more pump models (), by the at least one controller (), according to the sensor data () to determine an optimal pumping configuration. The method includes operating () one more pumps of the second pumping station (), by the at least one controller (), according to the optimal pumping configuration. 120-. (canceled)21. A method , comprising:receiving, by at least one controller, sensor data of a first pumping station corresponding to a liquid being transported from the first pumping station, wherein type and characteristics of the liquid being transported vary over time;predicting arrival of the liquid, by the at least one controller, at a second pumping station;fluidly coupling the first pumping station to the second pumping station through a pipeline;executing one or more pump models, by the at least one controller, according to the sensor data to determine an optimal pumping configuration; andoperating one more pumps of the second pumping station, by the at least one controller, according to the optimal pumping configuration,wherein the predicting of the arrival of the liquid at the second pumping station is based at least on the sensor data, a timestamp of the sensor data and a model of the pipeline including a steady-state model and a transient hydraulic model of the pipeline.22. The method of claim 21 , wherein the at least one controller is a controller of a station control system of the second pumping station.23. The method of claim 21 , wherein the at least one controller is a controller of a control system that controls a plurality of pumping stations.24. ...

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Номер записи: 21
16-01-2020 дата публикации

SYSTEM INCLUDING RECOVERY PUMP AND VACUUM PUMP

Номер: US20200018307A1
Автор: Boll Alex H., Denissen Ryan J., Grode Aaron C., Miller Justin
Принадлежит:

A system attachable to a refrigeration circuit includes a recovery pump attachable to the refrigeration circuit to remove refrigerant. The recovery pump includes a pump, an electric motor, a battery pack, and a recovery pump controller for controlling the operation of the electric motor. The recovery pump controller has a first communication interface. The system further includes an accessory attachable to the refrigeration circuit concurrently with the recovery pump. The accessory includes a sensor for detecting a characteristic value of the refrigeration circuit, and an accessory controller electrically connected with the sensor to receive a signal corresponding with the characteristic value of the refrigeration circuit. The accessory controller has a second communication interface to communicate the signal to the recovery pump controller via the first and second wireless interfaces. The recovery pump controller controls the operation of the electric motor based upon the signal received from the accessory. 1. A system attachable to a refrigeration circuit , the system comprising: a pump,', 'an electric motor for driving the pump,', 'a battery pack for providing power to the electric motor, and', 'a recovery pump controller for controlling the operation of the electric motor, the recovery pump controller having a first communication interface; and, 'a recovery pump attachable to the refrigeration circuit to remove refrigerant therefrom, the recovery pump including'} a sensor for detecting a characteristic value of the refrigeration circuit, and', 'an accessory controller electrically connected with the sensor to receive a signal therefrom corresponding with the characteristic value of the refrigeration circuit, the accessory controller having a second communication interface to communicate the signal to the recovery pump controller via the first and second wireless interfaces,, 'an accessory attachable to the refrigeration circuit concurrently with the recovery ...

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Номер записи: 22
16-01-2020 дата публикации

Pump apparatus

Номер: US20200018309A1
Автор: Kazuhiro Homma, Koji Higuchi, Yoshiyuki Kobayashi, Yosuke Ito
Принадлежит: Nidec Tosok Corp

A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

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Номер записи: 23
24-01-2019 дата публикации

Synchronization of Supply Flow Paths

Номер: US20190024647A1
Автор: Shoykhet Konstantin, Witt Klaus
Принадлежит:

A solvent supply system for supplying a composite solvent is described. The solvent supply system comprises a first supply flow path with a first pump unit, the first supply flow path being adapted for supplying a flow of a first solvent to a mixing unit, the first pump unit operating periodically, and a second supply flow path with a second pump unit, the second supply flow path being adapted for supplying a flow of a second solvent to the mixing unit, the second pump unit operating periodically. The mixing unit is adapted for mixing the first and the second solvent and for supplying a composite solvent. The solvent supply system further comprises a control unit adapted for controlling operation of the first and the second pump unit, the control unit being adapted to prevent at least one of a predefined phase relation and a predefined frequency relation between the first pump unit and the second pump unit. 1. A chromatographic gradient pump system for supplying a composite solvent having a varying ratio of a first solvent and a second solvent as a function of time , the gradient pump system comprising:a first supply flow path comprising a first pump unit having a first reciprocating piston, the first supply flow path configured to supply a flow of the first solvent;a second supply flow path comprising a second pump unit having a second reciprocating piston, the second supply flow path configured to supply a flow of the second solvent;a mixing unit being configured to mix the flow of the first solvent and the flow of the second solvent to supply the composite solvent; anda control unit configured to coordinate operation of the first pump unit and of the second pump unit relative to each other by changing a piston stroke of at least one of the first and second reciprocating pistons to prevent an unfavorable phase relation of the first pump unit and the second pump unit.2. The pump system of claim 1 , wherein the unfavorable phase relation comprises at least one of: ...

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Номер записи: 24
28-01-2021 дата публикации

Gas Compressor and Method for Controlling Same

Номер: US20210025380A1
Автор: Akihiro Yamamoto, Daichi OKA, Fuminori Kato, Hiroaki Saito, Norio Aoyagi, Yoshiyuki Kanemoto
Принадлежит: Hitachi Industrial Equipment Systems Co Ltd

The purpose of the present invention is to provide a gas compressor that can achieve reduced fluctuation of discharge pressure during compressor body number control, and a method for controlling the gas compressor. This gas compressor includes a plurality of compressor units each having a compressor body, a motor for driving the compressor body, and an inverter for controlling a rotational speed of the motor, and a control device for controlling each of the inverters, in which discharge pipes of the compressor bodies are merged with one main discharge pipe and discharge pressure of the main discharge pipe is controlled through control of pressure of the respective discharge pipes by controlling, by means of the respective inverters, driving frequencies of the compressor bodies. The control device determines whether recovery through an increase in the driving frequency of the motor of each of the compressor bodies is possible, on the basis of the pressure value and a temporal changing amount of the discharge pressure of the main discharge pipe when the driving frequency of the motor of the compressor body is being increased but has not reached an upper limit frequency, and controls an increase of the number of the compressor bodies to be operated.

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Номер записи: 25
02-02-2017 дата публикации

Compressor Valve Health Monitor

Номер: US20170030349A1
Автор: Matthew Carl Heller, Terry Lynn Ford, Timothy Scott Bassett
Принадлежит: Computational Systems Inc

A rotating machine valve health monitor. Aspects of the valve monitor include instrumenting each valve of a reciprocating compressor, or other rotating machine, with a sensor capable of detecting at least vibration and instrumenting the crank shaft with a sensor capable of detecting at least rotation. A controller directly monitors the operation and condition of each valve to precisely identify any individual valve exhibiting leakage issues rather than only identifying the region of the leakage. The valve monitor uses a relatively high frequency stress wave analysis technique to provide a good signal-to-noise ratio to identify impact events indicative of leakage. The valve monitor uses circular waveforms of vibration data for individual valves to identify leakage by pattern recognition or visual identification. The valve monitor provides ongoing data collection to give warning of predicted valve failure and scheduling of preventative maintenance for failing valves.

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Номер записи: 26
17-02-2022 дата публикации

OPERATING METHOD OF A COMPRESSOR OF A REFRIGERATING MACHINE AND COMPRESSOR OF A REFRIGERATING MACHINE

Номер: US20220049692A1
Автор: MORANDIN Mattia
Принадлежит:

Operating method () for a compressor () of a refrigerating machine (), said compressor () comprising an electric motor () and a power supply device () configured to modulate a supply voltage (V) and/or current (I) and/or frequency (F) for driving said electric motor (), said method () being characterized in that it involves: —setting (A) a stator resistance calibration N value (Ro) and at least one threshold value (S, S, S, S) for a control parameter (R), said threshold value (S, S, S, S) being correlated to said calibration value (Ro); —injecting (B), continuously during operation of said electric motor (), a disturbance signal (V, I) into said electric motor () by means of said power supply device (), said disturbance signal (V, I) consisting of a disturbance of said supply voltage (V) and/or current (I); detecting (C) f by means of voltage and current measurements at the phases of said electric motor (), a resulting voltage signal (V) and a resulting current signal (I), corresponding to said perturbation signal (V, I); —associating (D) with said control parameter (R) a value calculated as a function of said resulting voltage signal (V) and a resulting current signal (I); —regulating or interrupting (E) said supply voltage (V) and/or current (I) and/or frequency (F) depending on said control parameter (R) with respect to said at least one threshold value (S, S, S, S). 11010110010110210310210. An operating method () for a compressor () of a refrigerating machine () , said compressor () comprising an electric motor () and a power supply device () configured to modulate a supply voltage (V) and/or current (I) and/or frequency (F) for driving said electric motor (); said method () being characterized by the following steps:{'b': ['1', '2', '3', '4', '1', '2', '3', '4'], '#text': 'setting (A) a stator resistance calibration value (Ro) and at least one threshold value (S, S, S, S) for a control parameter (R), said threshold value (S, S, S, S) being correlated to said ...

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Номер записи: 27
17-02-2022 дата публикации

APPARATUS AND METHOD FOR CONTROLLING COMPRESSOR

Номер: US20220049694A1
Автор: HU Jinseok, KIM Young Doo, Lee Koonseok, YOU Jae Jun
Принадлежит:

An apparatus and a method may control a compressor. The apparatus may control a motor (included in a compressor) such that the motor quickly repeats turn-on and turn-off operations in a cooling power supply time period/section, thereby enabling the compressor to compress refrigerant in the cooling power supply time period/section. Thus, cooling power of a refrigerator may change while the compressor operates with maximum efficiency. 1. An apparatus for controlling a compressor that includes a piston and a motor , comprising:a rectifier configured to receive AC power and to output DC power;an inverter configured to convert the DC voltage from the rectifier into an AC voltage, and to provide the AC voltage to the motor; anda controller configured to control the AC voltage to be provided to the motor and to control reciprocating movement of the piston,wherein the controller is configured to control driving of the motor during a cooling power supply time period that includes a turn-on time period of the motor and a turn-off time period of the motor, wherein during the cooling power supply time period, the driving of the motor to repeat an operation cycle in which the motor is turned on and turned off,wherein during the turn-off time period of the motor, the piston is to move based on inertial energy, andwherein the controller is configured to control driving of the motor based on a first ratio that is set based on a command cooling power value of the compressor and a maximum-efficiency operation cooling power value of the compressor, wherein the first ratio is based on the turn-on time period and the turn-off time period.2. The apparatus of claim 1 , wherein during the turn-on time period of the motor claim 1 , the compressor is configured to be driven based on the maximum-efficiency operation cooling power value claim 1 , and the piston is configured to move based on electric energy claim 1 , andwherein the first ratio is in proportion to a second ratio, the second ...

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Номер записи: 28
01-05-2014 дата публикации

Sump Pump Remote Monitoring Systems and Methods

Номер: US20140119947A1
Автор: Jeffrey C. Ambrose, Michael B. Bishop, Thomas G. Boese
Принадлежит: Pentair Flow Technologies LLC

Systems and methods for sump pump remote monitoring can include control circuitry integrated into a portable housing, with a backup sump pump connected to the control circuitry. The control circuitry can be powered by a line power and when the line power is not available, the control circuitry can be powered by a battery power. The control circuitry can be connected to a control panel, and the control circuitry can include a pressure transducer, the pressure transducer to measure a pressure in a fluid level sensor, and based on the measured pressure, the control circuitry to adjust the speed of the backup sump pump. A wireless controller can be connected to the control circuitry, the wireless controller for wirelessly receiving monitoring instructions and wirelessly transmitting backup sump pump status data, with the control circuitry providing an indication of the backup sump pump status data to the control panel.

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Номер записи: 29
09-02-2017 дата публикации

AIR COMPRESSOR

Номер: US20170037842A1
Автор: AKASAKA Haruaki, OHKUBO Shinichi, YOSHIDA Tsutomu
Принадлежит:

An air compressor includes a tank unit that stores compressed air, a motor unit that generates compressed air to be stored in the tank unit, a pressure detection unit that detects a pressure value in the tank unit, and a control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value. The control unit changes at least either of the motor start pressure value or the motor stop pressure value every time when a predetermined time passed. 1. An air compressor comprising:a tank unit that stores compressed air;a motor unit that generates compressed air to be stored in the tank unit;a pressure detection unit that detects a pressure value in the tank unit; anda control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value,wherein the control unit changes at least either of the motor start pressure value or the motor stop pressure value every time when a predetermined time passed.2. An air compressor comprising:a tank unit that stores compressed air;a motor unit that generates compressed air to be stored in the tank unit;a pressure detection unit that detects a pressure value in the tank unit; anda control unit that drives the motor unit when a pressure value in the tank unit detected by the pressure detection unit is equal to or less than a motor start pressure value, and stops the motor unit when the pressure value in the tank unit detected by the pressure detection unit is equal to or greater than a motor stop pressure value,wherein the ...

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Номер записи: 30
09-02-2017 дата публикации

AIR COMPRESSOR

Номер: US20170037844A1
Автор: OHKUBO Shinichi, TAKEUCHI Katsuki
Принадлежит:

An air compressor includes a tank unit, a compressed air generating unit, a motor unit, a driving current generating unit, a control unit and a temperature detecting unit. The tank unit stores a compressed air. The compressed air generating unit generates the compressed air to be stored in the tank unit. The motor unit drives the compressed air generating unit. The driving current generating unit generates a driving current of the motor unit. The control unit drives the motor unit by controlling the driving current generating unit. The temperature detecting unit detects a temperature of the driving current generating unit. The control unit changes the driving current of the motor unit by controlling the driving current generating unit based on the temperature detected by the temperature detecting unit. 1. An air compressor comprising:a tank unit that stores a compressed air;a compressed air generating unit that generates the compressed air to be stored in the tank unit;a motor unit that drives the compressed air generating unit;a driving current generating unit that generates a driving current of the motor unit;a control unit that drives the motor unit by controlling the driving current generating unit; anda temperature detecting unit that detects a temperature of the driving current generating unit,wherein the control unit changes the driving current of the motor unit by controlling the driving current generating unit based on the temperature detected by the temperature detecting unit.2. The air compressor according to claim 1 ,wherein the control unit changes a load of the motor unit based on the temperature detected by the temperature detecting unit.3. The air compressor according to further comprising a motor temperature detecting unit that detects a temperature of the motor unit claim 1 ,wherein the control unit controls the driving current generating unit to change an upper limit value of the driving current of the motor unit based on the temperature detected ...

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Номер записи: 31
08-02-2018 дата публикации

METHOD FOR OPERATING AN UNDULATING DIAPHRAGM PUMP AND AN UNDULATING DIAPHRAGM PUMP OPERATING SYSTEM

Номер: US20180038364A1
Автор: Dumas Florian, Reynard Bruno, Rudloff Mathieu, Travers Nicolas
Принадлежит:

The present invention relates to a method for operating an undulating diaphragm pump comprising an undulating diaphragm and actuating means of the undulating diaphragm electrically powered according to a given frequency or voltage to make the undulating diaphragm oscillate and undulate. According to the invention, the method consists in modifying the electrical supply frequency and/or voltage of the actuating means according to at least one operating parameter, determined in advance, of the undulating diaphragm pump. 1. A method for operating an undulating diaphragm pump comprising at least one undulating diaphragm and actuating means of the undulating diaphragm electrically powered according to a given frequency and/or voltage to make the undulating diaphragm oscillate and undulate ,wherein the method consists essentially of modifying the electrical supply frequency and/or voltage of the actuating means according to at least one operating parameter, determined in advance, of the undulating diaphragm pump.2. Method as claimed in claim 1 , wherein the method comprises the steps consisting of:(A) determining an operating parameter of the undulating diaphragm pump; 'if the determined operating parameter does not reach the predetermined target value, (C) varying the electrical supply frequency and/or voltage of the actuating means until the determined operating parameter reaches the predetermined target value.', '(B) verifying whether the determined operating parameter has reached a predetermined target value;'}3. Method according to claim 2 , wherein the predetermined target value corresponds to a maximum or minimum value.4. Method according to claim 2 , wherein step (B) consisting of verifying whether the determined operating parameter has reached the predetermined target value claim 2 , consists in verifying whether the determined operating parameter lies within a predetermined range of values.5. Method according to claim 1 , wherein the determined operating ...

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Номер записи: 32
06-02-2020 дата публикации

PUMP RIPPLE PRESSURE MONITORING FOR INCOMPRESSIBLE FLUID SYSTEMS

Номер: US20200040889A1
Автор: SMITH Alan
Принадлежит: Rolls-Royce Corporation

Systems and methods are disclosed of monitoring performance of an incompressible fluid system. The system has a positive displacement pump and a high bandwidth pressure sensor. A method comprises sensing a pressure of the fluid with the pressure sensor, determining pump ripple frequency and hence the speed of the positive displacement pump, calculating the pump flow rate, determining a flow restriction of the fluid system based on the pressure and flow, and assessing or trending the fluid system flow restriction. 1. In an incompressible fluid system having a positive displacement pump and a pressure sensor , a method of monitoring performance of the fluid system , the method comprising:sensing a pressure of the fluid with the pressure sensor;determining from the pressure sensing a ripple frequency of the fluid and a speed of the positive displacement pump;calculating from the speed of the positive displacement pump a flow rate of the fluid induced by the positive displacement pump;determining, based on the calculated flow rate and the sensed pressure, a flow restriction of the fluid system; andassessing the fluid system for an excessive flow restriction condition using the determined flow restriction.2. The method of wherein the step of assessing the fluid system for an excessive flow restriction condition using the determined flow restriction comprises:comparing the determined flow restriction of the fluid system to a baseline flow restriction; andindicating an excessive flow restriction when the determined flow restriction exceeds the baseline flow restriction by a first predetermined amount.3. The method of further comprising:providing an indication to an operator of the fluid system to inspect a filter of the fluid system when the determined flow restriction exceeds the baseline flow restriction by a second predetermined amount.4. The method of wherein the step of assessing the fluid system for an excessive flow restriction condition using the determined flow ...

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Номер записи: 33
15-02-2018 дата публикации

PUMP MONITORING METHOD

Номер: US20180045194A1
Автор: Beard Keith Victor, Tran Sang
Принадлежит: Pulsar Process Measurement Limited

A system comprising: a reservoir (14) for holding a liquid; a pump (20) arranged to pump the liquid out of the reservoir (14) or into the reservoir (14); a level sensor (26) configured to detect the level of the liquid in the reservoir (14) and to generate level data; a current monitor (28) configured to monitor the current drawn by the pump (20) and to generate current data; and a controller (30) configured to: receive level data and determine the static head from the level data, and generate head data from the static head; receive first current and head data corresponding to the current drawn by the pump (20) as a function of the static head for a first period of operation of the pump (20); receive second current and head data corresponding to the current drawn by the pump (20) as a function of the static head for a second period of operation of the pump (20), wherein the second current and head data is recorded when the liquid in the reservoir (14) is between a first liquid level and a second liquid level, and wherein the first current and head data is recorded when the liquid in the reservoir (14) is between at least the first liquid level and the second liquid level; and process the first current and head data and the second current and head data to determine first difference data (PPI) representing the difference between the current drawn between the first liquid level and the second liquid level in the first period of operation and the second period of operation, the first difference data providing a pump performance indicator giving an indication of the condition of the pump. 1. A system comprising:a level sensor configured tobe installed in a reservoir for holding liquid, the level sensor configured to monitor the liquid level in the reservoir and generate level data based on the monitored liquid level;a current monitor configured to monitor the current drawn by a pump associated with the reservoir and generate current data based on the monitored current ...

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Номер записи: 34
07-02-2019 дата публикации

SYSTEM AND METHOD FOR A MITIGATING HIGH FREQUENCY COMMON MODE (L-G) PHENOMENA AND ASSOCIATED AFFECTS ON ELECTRICAL SUBMERSIBLE PUMPS MECHANICAL RUN LIFE

Номер: US20190044421A1
Автор: Grande, III Salvatore F., Shipp David D.
Принадлежит: MAGNEY GRANDE DISTRIBUTION INC.

A common mode line-to-ground filter is disclosed which includes but is not limited to a resistor, capacitor and a ground. The common mode line to ground filter is connected on a high side of a step-up transformer. A low side of the step-up transformer is connected to a variable frequency drive that provides a semi-sinusoidal voltage waveform. The common mode line to ground filter generates a filtered sinusoidal waveform from the output of the step-up transformer. The filtered sinusoidal voltage waveform is supplied via an electrical cable to an electrically submersible pump deployed downhole. 1. A system for reducing motor bearing fluting in a down hole electric submersible pump , the apparatus comprising:a downhole electrical submersible pump deployed downhole in a wellbore drilled in a surface of the Earth, wherein the downhole electrical submersible pump is connected to a surface mounted line-to-ground filter by an electrical cable attached between the surface-mounted line-to-ground filter and the electrical submersible pump;a pulse width modulated three-phase power supply that generates a pulse width modulated three-phase low voltage waveform at a nominal range of 480-600 volts from a pulse width modulated power supply output to provide power to the downhole electric submersible pump;a sine wave filter electrically connected to the pulse width modulated power supply output, wherein the sine wave filter generates a three-phase sinusoidal voltage waveform at a nominal low voltage 480-600 Volts and provides the three-phase sinusoidal voltage waveform from a sine wave filter output on the sine wave filter;a step-up transformer having a low side, wherein the low side is electrically connected to the output of the sine waver filter and receives the three-phase sinusoidal voltage waveform, the step-up transformer further having a high side, wherein the step-up transformer transforms the three-phase sinusoidal voltage waveform 480 volts received on the low side to a ...

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Номер записи: 35
06-02-2020 дата публикации

Drive apparatus of electric motor and electric pump apparatus

Номер: US20200044586A1
Автор: Hiroyuki Miyamoto, Koichi Aizawa
Принадлежит: Aisin Seiki Co Ltd

A drive apparatus of an electric motor which does not include a position detection sensor, the drive apparatus includes drive portion configured to drive the electric motor on the basis of a command value inputted from outside, a number-of-rotations detection portion configured to detect a number of rotations of the electric motor driven by the drive portion, an out-of-phase judgement portion judging that the electric motor is out of phase in a case where the number of rotations detected by the number-of-rotations detection portion is less than a predetermined threshold value, and the predetermined threshold value being configured to be changed on the basis of the command value inputted from outside.

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Номер записи: 36
14-02-2019 дата публикации

Electric tree felling head and associated control system for a forestry vehicle

Номер: US20190045727A1
Автор: Bhupesh Agrawal, Sean Patrick West
Принадлежит: Deere and Co

A tree feller-buncher includes a felling head having a saw blade, an engine carried by an undercarriage, a hydraulic system operably connected to the engine, at least one transient operably connected to the hydraulic system, and an electric system operably connected to the engine, the electric system configured to operate the saw blade.

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Номер записи: 37
04-03-2021 дата публикации

System comprising a refrigerant compressor and method for operating the refrigerant compressor

Номер: US20210062797A1
Автор: Alfred Freiberger, Hans Peter Schoegler
Принадлежит: Secop GmbH

A system includes a refrigerant compressor and an electronic control device therefor. The compressor includes a drive unit and a compression mechanism drivable thereby having a crankshaft-drivable piston. The control device captures and controls, in an open- and/or closed-loop manner, the crankshaft rotational speed and at least approximately captures the piston position. The control device determines an energy evaluation variable difference while the drive unit is switched off proportional to the energy required to perform one crankshaft revolution; at a measurement rotational speed, determines an energy evaluation variable proportional to the rotational energy at the measurement rotational speed; determines the number of crankshaft revolutions remaining, while the drive unit is switched off, until a standstill of the compression mechanism; and checks whether the remaining crankshaft revolutions upon switch-off of the drive unit at a reference piston position enable stopping of the compression mechanism in the suction phase thereof.

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Номер записи: 38
04-03-2021 дата публикации

METHOD AND SYSTEM FOR MONITORING THE CONDITION OF ROTATING SYSTEMS

Номер: US20210062803A1
Автор: Orfanoudakis Georgios, Yuratich Michael
Принадлежит:

An apparatus and method is disclosed to monitor the operating condition of a rotational electromechanical system and to further sense and diagnose an abnormal condition of such systems in real time. The apparatus and method includes an improved technique of monitoring such systems, detecting problems, diagnosing causes and acting on the problems to reduce failures and increase production. 138-. (canceled)39. An apparatus for monitoring a condition of an electromechanical system comprising:any of a current sensor electrically coupled to the electromechanical system and adapted to determine a current and a voltage sensor electrically coupled to the electromechanical system and adapted to determine a voltage;a computing device electrically coupled to the electromechanical system comprising an observer adapted to receive any of the current and the voltage and adapted to determine any of an instantaneous angular position, an instantaneous rotational speed and an instantaneous torque of a shaft; andthe computing device adapted to use any of the instantaneous angular position, the instantaneous rotational speed and the instantaneous torque of the shaft to determine and a condition of the electromechanical system.40. The apparatus of wherein the computing device is configured to correlate the instantaneous angular position and the instantaneous rotational speed of the shaft over a short time interval to produce an angle correlated data set.41. The apparatus of wherein the computing device is configured to correlate any of the instantaneous angular position claim 40 , the instantaneous rotational speed and the instantaneous torque of the shaft over with respect to time over a long time interval to produce a time correlated data set.42. The apparatus of wherein the computing device is configured to determine whether the condition is a stable condition or an abnormal condition.43. The apparatus of further comprising the computing device configured to determine whether a ...

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Номер записи: 39
08-03-2018 дата публикации

Pump monitoring apparatus and method

Номер: US20180066658A1
Автор: Laurent Marc Philippe
Принадлежит: Edwards Ltd

A monitoring apparatus comprises at least one sensor for measuring a current of the electric motor to generate a time-based signal and at least one electronic processor configured to transform the time-based signal into a frequency-based signal and to analyse the frequency-based signal to identify a signal pattern representing a pump fault condition. By monitoring the frequency-based signal, the monitoring apparatus can identify a pump fault condition.

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Номер записи: 40
27-02-2020 дата публикации

Flow Locking System and Method

Номер: US20200063734A1
Автор: Hruby Daniel J., McCall Rodney, Robol Ronald B.
Принадлежит:

Embodiments of the invention provide a pumping system and method including a flow locking feature. A pump controller includes a user interface configured to initially receive and set a plurality of programmed flow rate settings, a maximum locked flow rate, and a minimum locked flow rate. The pump controller is also configured to disable resetting of the maximum flow rate and the minimum flow rate once they are initially received and set and to allow resetting of the plurality of programmed flow rate settings throughout operation of the pumping system. The pump controller is further configured to operate a pump motor in order to maintain a first flow rate set by one of the plurality of programmed flow rate settings as long as the first flow rate is between the minimum locked flow rate and the maximum locked flow rate. 1. A pumping system for at least one aquatic application , the pumping system comprising:a pump;a motor coupled to the pump; and the pump controller including a user interface configured to initially receive and set a maximum locked flow rate, a minimum locked flow rate, and a plurality of programmed speed settings including a first programmed speed setting,', 'the pump controller configured to disable resetting of the maximum flow rate and the minimum flow rate once they are initially received and set through the user interface,', 'the pump controller configured to allow resetting of the plurality of programmed speed settings throughout operation of the pumping system,', 'the pump controller configured to operate the motor at a first speed set by the first programmed speed setting as long as operating the motor at the first speed maintains a flow rate through the pumping system that is between the minimum locked flow rate and the maximum locked flow rate., 'a pump controller in communication with the motor,'}2. The pumping system of wherein the pump controller is configured to operate the motor at an adjusted speed if operating the motor at the first ...

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Номер записи: 41
11-03-2021 дата публикации

Deep intelligence for electric submersible pumping systems

Номер: US20210071509A1
Автор: David C. Beck, Donn J. Brown, Luke Golden Janger
Принадлежит: Halliburton Energy Services Inc

A motor associated with an electric submersible pump (ESP) is positioned in a wellbore. Measurement data is received from one or more sensors. A deep learning model running on a motor controller associated with the ESP determines operating parameters or operating conditions of the ESP based on the measurement data. The motor controller adjusts operation of the motor of the ESP based on the determined operating parameters or operating conditions.

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Номер записи: 42
08-03-2018 дата публикации

Power conversion circuit board, and electric compressor

Номер: US20180069487A1
Автор: Hiroto Higuchi, Hiroyuki Kamitani, Makoto Hattori
Принадлежит: Mitsubishi Heavy Industries Automotive Thermal Systems Co Ltd

A power conversion circuit board ( 1 ) is a board on which a power conversion circuit which converts direct current to alternating current is mounted. A low voltage circuit ( 10 b ) to which a low voltage is applied and a high voltage circuit ( 10 a ) to which a high voltage is applied are separately disposed in different areas on the same board surface. Further, the high voltage circuit ( 10 a ) includes a bus bar in which a part of a wiring is formed on the board surface and another wiring is provided with a predetermined distance from the board surface.

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Номер записи: 43
18-03-2021 дата публикации

COMPRESSED AIR SYSTEM FOR A MOTOR VEHICLE

Номер: US20210079904A1
Автор: Adler Tamas, NÉMETH Huba
Принадлежит:

A compressed air system for a motor vehicle with an air supply system includes an electric drive motor, which can be controlled for variable speed, an air compressor coupled to be driven by the electric drive motor, an electric power supply for supplying electric power to the electric drive motor, at least one air reservoir connected with the air compressor to receive air from the air compressor, an air utilization system connected to the air reservoir to receive air from the air reservoir, and a controller to control the speed of the electric drive motor. The controller controls the electric drive motor to determine its speed depending upon at least one of the following signals: a signal representing the activation status of an accelerator pedal of the vehicle, a signal representing the speed of the vehicle, a signal representing the temperature of the power supply, a signal representing the temperature of the electric drive motor, a signal representing the wetness level of the air compressed by the air compressor, a signal representing the load of the air compressor, a signal representing the running time of the air compressor, or a signal representing the status of the electric power supply. 1. A compressed air system for a motor vehicle with an air supply system , an internal combustion engine and a passive parking brake which is activated by decreasing pressure in parking spring brake cylinders and is released by increasing pressure in the parking brake cylinders to a parking brake release pressure , comprising:an electric drive motor, which is controllable for variable speed;an air compressor coupled to be driven by the electric drive motor;an electric power supply for supplying electric power to the electric drive motor;at least one air reservoir connected with said air compressor to receive air from the air compressor;an air utilization system connected to said at least one air reservoir to receive air from said at least one air reservoir; anda controller to ...

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Номер записи: 44
22-03-2018 дата публикации

Control system and method of a vfd-based pump and pump system

Номер: US20180080443A1
Автор: Xiaomeng CHENG, Yilun CHEN
Принадлежит: Eaton Intelligent Power Ltd

A control system and method of a VFD-based pump are disclosed. The control system controls an electric motor via a VFD, and the electric motor drives the pump. The control system comprises: an anti-ripple injection module for injecting an anti-ripple signal into a control path, the anti-ripple signal causing pressure ripples in the pump output to he at least partially cancelled. Further disclosed is a pump system, comprising: a VFD, an electric motor, and a pump, wherein the VFD comprises the control system stated above.

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Номер записи: 45
26-03-2015 дата публикации

Pump device

Номер: US20150086402A1
Автор: Motoyasu Chouno, Ryuji ITOYAMA, Taisuke Osaka, Yusaku Tanabe
Принадлежит: Ulvac Kiko Inc

A pump device ( 1 ) according to an embodiment of the present invention includes a drive motor (M), a first pump unit for evacuation ( 11 ) including a first pump chamber and a first piston ( 21 v ), and a second pump unit for pressurization ( 12 ) including a second pump chamber and a second piston ( 21 c ). The second piston ( 21 c ) has a phase advanced with a rotational phase difference (φ) of more than 0° and less than 80° with respect to the first piston ( 21 v ).

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Номер записи: 46
31-03-2022 дата публикации

SYSTEM INCLUDING RECOVERY PUMP AND VACUUM PUMP

Номер: US20220099087A1
Автор: Boll Alex H., Denissen Ryan J., Grode Aaron C., Miller Justin
Принадлежит:

A system attachable to a refrigeration circuit includes a recovery pump attachable to the refrigeration circuit to remove refrigerant. The recovery pump includes a pump, an electric motor, a battery pack, and a recovery pump controller for controlling the operation of the electric motor. The recovery pump controller has a first communication interface. The system further includes an accessory attachable to the refrigeration circuit concurrently with the recovery pump. The accessory includes a sensor for detecting a characteristic value of the refrigeration circuit, and an accessory controller electrically connected with the sensor to receive a signal corresponding with the characteristic value of the refrigeration circuit. The accessory controller has a second communication interface to communicate the signal to the recovery pump controller via the first and second wireless interfaces. The recovery pump controller controls the operation of the electric motor based upon the signal received from the accessory. 117.-. (canceled)18. A system attachable to a refrigeration circuit , the system comprising:{'claim-text': ['a pump,', 'an electric motor for driving the pump, and', 'a vacuum pump controller for controlling the operation of the electric motor, the vacuum pump controller having a first communication interface; and'], '#text': 'a vacuum pump attachable to the refrigeration circuit to remove fluid therefrom, the vacuum pump including'}{'claim-text': ['an electrically actuated fluid valve coupled between the pump and the refrigeration circuit to selectively place the pump in fluid communication with the refrigeration circuit, or', {'claim-text': ['a sensor for detecting pressure within the refrigeration circuit, and', 'an accessory controller electrically connected with the sensor to receive a signal therefrom corresponding with the pressure of the refrigeration circuit, the accessory controller having a second communication interface to communicate the signal to ...

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Номер записи: 47
29-03-2018 дата публикации

TEST CONTROLLER FOR A ROTARY PUMP

Номер: US20180087500A1
Автор: Lehmann Kirk A., Marseille Oliver, Vohburger Christian W.
Принадлежит:

A test controller and method to operate a rotary motor of a pump are provided. The test controller includes a test speed circuit electrically coupled to, but detachable from, the pump and being configured to apply at least one signal to the pump motor to cause the pump motor to rotate at a predetermined test speed and/or for a predetermined test time. An actuator selectively activates the test speed circuit to operate the pump motor at the predetermined test speed and/or for the predetermined test time. The method includes electrically coupling the test controller to the pump and, in response to selective activation of the actuator, selectively activating the test speed circuit to apply at least one signal to the pump motor to operate the pump motor at a predetermined test speed and/or for a predetermined test time. The method further includes detaching the test controller from the pump. 1. A test controller for operating a rotary pump motor of a pump configured for implantation into a patient and that operates in the implanted state without the test controller , the rotary pump motor having a normal operating speed , comprising:a test speed circuit electrically coupled to, but detachable from, the pump and being configured to apply at least one signal to the pump motor to cause the pump motor to rotate at a predetermined test speed that is lower than the normal operating speed of the pump motor; andan actuator configured to selectively activate the test speed circuit to operate the pump motor to rotate at the predetermined test speed in response to selective activation of the actuator.2. The test controller of claim 1 , wherein the normal operating speed is from about 20 claim 1 ,000 rotations-per-minute to about 28 claim 1 ,000 rotations-per- minute claim 1 , and the predetermined test speed is from about 780 rotations-per-minute to about 1180 rotations-per-minute.3. The test controller of claim 1 , further comprising:a timing circuit electrically coupled to the ...

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Номер записи: 48
19-03-2020 дата публикации

Method of Controlling a Pump and Motor

Номер: US20200088189A1
Автор: Baase, Genaw William James, II Gary T., Kidd Melissa Drechsel, Pasche Micheal
Принадлежит:

A variable frequency drive system and a method of controlling a pump driven by a motor with the pump in fluid communication with a fluid system is provided. The method includes monitoring a pressure in the fluid system, monitoring and adjusting an operating frequency of the motor to maintain the pressure at a pressure set point, and, based on the monitored operating frequency, causing the pump to temporarily boost the pressure in the fluid system to a temporary boost set point for a first time period. The method also includes determining whether the temporarily boosted pressure in the fluid system stays above the pressure set point for a second time period and causing the pump to enter a sleep mode when the temporarily boosted pressure stays above the pressure set point through the second time period. 1. A controller for a pump driven by a motor , the pump in fluid communication with a fluid system , the controller comprising:a variable frequency drive circuit that controls operation of the pump; and the control panel including an automatic start button and a stop button,', 'the variable frequency drive circuit automatically operating in a line fill mode when the pump starts when the automatic start button is engaged,', 'the variable frequency drive circuit disabling the pump when the stop button is engaged., 'a control panel connected to the variable frequency drive circuit,'}2. The controller of wherein the variable frequency drive circuit operates in the line fill mode by determining a pressure in the fluid system when the pump starts.3. The controller of claim 2 , wherein the variable frequency drive circuit operates the motor at a low frequency for a time period when the pressure in the fluid system is less than a minimum pressure set point in order to fill the fluid system.4. The controller of claim 3 , wherein the variable frequency drive circuit operates the motor at a normal frequency after the timer period has expired in order to maintain a normal pressure ...

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Номер записи: 49
28-03-2019 дата публикации

Self-Contained Slide Processing Unit for Biological Specimens

Номер: US20190091696A1
Автор: Corwin Alex David, Karp Jessica Godin, Lazare Michael Steven, Shaikh Kashan Ali, Shoudy David Andrew, Surrette Christine Lynne, Vollenweider Meret, Zingelewicz Stephen Eric
Принадлежит:

Systems and methods for processing biological specimens are provided. The biological specimen processing system generally includes a flow cell carrier for holding a microfluidic flow cell and a fluidic handling unit attachable to the flow cell carrier. The fluidic handling unit interfaces with the microfluidic flow cell and can include fluidic pumps, fluidic connections, integrated electronics, and processing software to facilitate processing of a biological specimen contained in the microfluidic flow cell. 1. A biological specimen processing system comprising:a fluidic handling unit comprising:a baseplate;a fluidic inlet block;a fluidic outlet block;a pump in fluidic communication with the fluidic inlet block and the fluidic outlet block; anda carrier control board in electrical communication with the pump.2. The system of claim 1 , further comprising:a flow cell carrier comprising a microfluidic flow cell receiving area, wherein the flow cell carrier is configured to receive and retain the fluidic handling unit.3. The system of claim 2 , wherein the flow cell carrier comprises one or more retention members claim 2 , and wherein the one or more retention members are operable to fasten the fluidic handling unit to the flow cell carrier.4. The system of claim 2 , wherein a bottom surface of the fluidic handling unit is configured to complementary mate with a top surface of the flow cell carrier.5. The system of claim 2 , wherein a bottom surface of the flow cell carrier is configured to complementary mate with a top surface of a receiver.6. The system of claim 2 , wherein a bottom wall of the flow cell carrier has an optical aperture corresponding to the microfluidic flow cell receiving area or a portion thereof claim 2 , and wherein the optical aperture is arranged to allow optical access of a microfluidic flow cell when the microfluidic flow cell is disposed in the microfluidic flow cell receiving area.7. The system of claim 2 , wherein a bottom wall of the flow ...

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Номер записи: 50
01-04-2021 дата публикации

Control Device of Electric Oil Pump and Electric Oil Pump

Номер: US20210095661A1
Автор: Koji Higuchi, Yasuhiro Shirai
Принадлежит: Nidec Tosok Corp

A control device is provided for controlling a rotation speed of an electric oil pump, including a motor and a pump mechanism connected to the motor, based on a command value input from a host device. The control device includes: a first calculator calculating a first duty value of current to be output to the motor based on a deviation between the command value and a rotation speed of the motor; a second calculator calculating a second duty value of current to be output to the motor based on a deviation between a current limit value of the motor and a current value of the motor; and a drive current determiner comparing the first duty value calculated by the first calculator and the second duty value calculated by the second calculator, and selecting the lower duty value as a duty value of current that drives the motor.

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Номер записи: 51
13-04-2017 дата публикации

Oil Lubricated Compressor

Номер: US20170101985A1
Автор: Hathcock Lance S., Mcfarland Dalton E., Vintzel James, Vos Stephen J.
Принадлежит: BLACK & DECKER INC.

An oil lubricated compressor having a universal motor, efficient starting and re-starting characteristics, and a long operating life. The oil lubricated compressor can have a brushed or brushless universal motor which can drive a cooling fan and a pump. The universal motor can achieve a high torque to voltage ratio, as well as a high torque to current ratio, upon starting or re-starting of the compressor. Optionally, the oil lubricated compressor can use a single cooling fan disposed in the compressor at a location which is between the universal motor and a cylinder head of the pump. 1. An oil lubricated compressor , comprising:a pump;a universal motor that drives the pump,wherein the pump has at least a portion thereof lubricated by an oil.2. The oil lubricated compressor according to claim 1 , wherein the universal motor is a brushed universal motor.3. The oil lubricated compressor according to claim 1 , wherein the universal motor is a brushed universal motor having an electrographite grade brush.4. The oil lubricated compressor according to claim 1 , wherein the universal motor is a brushless universal motor.5. The oil lubricated compressor according to claim 1 , wherein the universal motor has an operating life of 300 hrs or greater.6. The oil lubricated compressor according to claim 1 , wherein the universal motor has an inrush current of 85 amps or less.7. The oil lubricated compressor according to claim 1 , wherein the universal motor has an inrush current of 95 amps or less for an inrush time of 300 ms or less.8. The oil lubricated compressor according to claim 1 , wherein the universal motor has a voltage during inrush of 75V or less for an inrush time of 300 ms or less.9. The oil lubricated compressor according to claim 1 , wherein the universal motor can re-start at a voltage of 90% or less of rated voltage.10. The oil lubricated compressor according to claim 1 , wherein the universal motor can re-start at a voltage in a range of 75V to 90V.11. The oil ...

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Номер записи: 52
04-04-2019 дата публикации

Sump pump monitor

Номер: US20190101427A1
Автор: Lawrence J. Beger, Mateusz Cwiokowski, Michael J. Thariath, Michael Skiba
Принадлежит: Elexa Consumer Products Inc

Technology relating to a sump pump monitor is provided herein. A sump pump monitor includes a water level sensor to measure a level of water in a pit of the sump pump, an overflow sensor to detect whether an overflow of the water is present in the pit of the sump pump, and a power monitor to monitor electric power delivered to the sump pump. The power monitor is also to transmit one or more signals indicative of an operational issue associated with the sump pump based on the level of the water, the overflow of the water, and the electric power.

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Номер записи: 53
02-06-2022 дата публикации

METHOD FOR CONTROLLING THE START-UP OF AN OIL PUMP

Номер: US20220170455A1
Автор: LELEU Mathieu
Принадлежит: RENAULT S.A.S.

A method controls the start-up of an oil pump of a gearbox by a brushless electric motor that has no position sensor. The stator coils are powered from the off mode in a constant-current open-loop control sequence until the pump reaches a speed threshold at which speed regulation switches over to closed-loop control on a setpoint corresponding to the lubrication flow rate required to ensure the reliability of the gearbox, but without in so doing exceeding a current threshold indicative of pump seizure, at which point motor control switches back over to the constant-current open-loop control sequence. The open-loop current setpoint is higher than the threshold for switching over to closed-loop control so that in the open-loop control mode the motor torque available at the pump is higher than in the closed-loop control mode. 1. A method for controlling the start-up of a gearbox oil pump by a brushless electric motor , without position sensor , comprising:powering the stator coils from the off mode according to a constant-current open-loop control sequence until the pump reaches a speed threshold at which the speed regulation switches over to closed-loop control on a setpoint corresponding to the lubrication flow rate necessary to ensure the reliability of the gearbox, but without exceeding a current threshold detecting seizure of the pump at which the motor control switches back over to the constant-current open-loop control sequence,wherein the open-loop current setpoint is higher than the threshold for switching over to closed-loop mode, so as to have, in open-loop mode, a motor torque on the pump that is higher than in closed-loop mode.2. The method for controlling the start-up of an oil pump as claimed in claim 1 , wherein claim 1 , upon detection of seizure of the pump in closed-loop mode claim 1 , the GMP computer switches over the pump speed regulation to open-loop mode for a calibrated period.3. The method for controlling the start-up of an oil pump as claimed ...

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Номер записи: 54
11-04-2019 дата публикации

FLUID PUMP WITH HEAT DISSIPATION

Номер: US20190109516A1
Автор: Bernreuther Georg
Принадлежит: Bühler Motor GmbH

A fluid pump, having a pump impeller, mounted so as to rotate around an axle, in a conveyed medium in a wet area and a conductor plate, which is arranged in a dry area sealed off from the conveyed medium, wherein radial forces of the axle are accommodated, on one side, by a separating wall between the dry area and the wet area and by a pump head on the other side. The object of the invention is to provide structural features to ensure an optimum dissipation of heat from a conductor plate and its power components to the conveyed medium without negatively impacting the hydraulic efficiency of the pump. 1. A fluid pump for use in a cooling medium circuit , the fluid pump comprising:an axle;a wet area having a conveyed medium;a dry area;a pump impeller mounted on the axle so as to rotate around the axle in the conveyed medium in the wet area;a conductor plate arranged in the dry area sealed off from the conveyed medium in the wet area, wherein radial forces of the axle are accommodated, on one side of the axle, by a separating wall between the dry area and the wet area and by a pump head on the other side of the axle; andelectronic components mounted on the conductor plate, the electronic components generating heat that is dissipated via a heat-conducting path to the cooling medium circuit, the heat conducting path including the axle and first and second axle retainers, which transfer the radial forces of the axle from the axle to the separating wall and the pump head.2. The fluid pump according to claim 1 , wherein the separating wall has a base and wherein the first axle retainer is fitted against the base claim 1 , arranged axially to an axis of rotation of the pump impeller.3. The fluid pump according to claim 1 , wherein the pump head has a intake duct and wherein the second axle retainer is arranged in the intake duct of the pump head and the conveyed medium at least partially flows around it during operation.4. The fluid pump according to claim 1 , wherein a heat ...

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Номер записи: 55
09-06-2022 дата публикации

MOTOR CONTROL DEVICE, HYDRAULIC PRESSURE GENERATION DEVICE, MOTOR CONTROL METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

Номер: US20220178364A1
Автор: FUKASHIRO KOTA, YAMADA MIYA
Принадлежит: MITSUBA CORPORATION

A motor control device according to the disclosure includes: a current control part, performing current control for rotating a motor from a stop state; a rotation speed calculation part, calculating an actual rotation speed of the motor; an acquisition part, acquiring a target rotation speed of the motor; a speed control part, performing speed control of the motor, so that the actual rotation speed of the motor becomes the target rotation speed; and a correction part, at a time when a current control state is transitioned to a speed control, correcting the target rotation speed based on a relation between the actual rotation speed and the target rotation speed. When the target rotation speed is corrected, the speed control part performs the speed control so that the actual rotation speed becomes the target rotation speed corrected by the correction part. 1. A motor control device , comprising: a rotation speed calculation part, calculating an actual rotation speed of the motor;', 'an acquisition part, acquiring a target rotation speed, which is a target value relating a rotation speed of the motor;', 'a speed control part, performing speed control of the motor, so that the actual rotation speed of the motor calculated by the rotation speed calculation part becomes the target rotation speed acquired by the acquisition part; and', 'a correction part, at a time of a transition from a current control state by the current control part to the speed control performed by the speed control part, correcting the target rotation speed acquired by the acquisition part based on a relation between the actual rotation speed of the motor calculated by the rotation speed calculation part and the target rotation speed acquired by the acquisition part,', 'wherein in a case where the target rotation speed acquired by the acquisition part is corrected by the correction part, the speed control part performs the speed control, so that the actual rotation speed of the motor calculated by ...

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Номер записи: 56
07-05-2015 дата публикации

METHOD OF OPERATING A PUMPING SYSTEM

Номер: US20150125312A1
Автор: Bruce Simon Harold
Принадлежит:

A pumping system for evacuating an enclosure comprises a pumping mechanism (), a motor () for driving the pumping mechanism, and a controller () for controlling the motor. The controller sets a maximum value for a rotational frequency of the motor and a maximum value for a current in the motor, and, to optimise the performance of the pumping system, independently adjusts the maximum values during evacuation of the enclosure. 147-. (canceled)48. A vacuum pumping system comprising:a pumping mechanism;a motor for driving the pumping mechanism; anda controller for controlling the motor, wherein the controller sets a maximum value for a rotational frequency of the motor and a maximum value for a current in the motor, wherein the controller adjusts the maximum values during operation of the vacuum pumping system, andwherein the controller is configured to increase the maximum value for the current in the motor to be higher than a continuous operation current rating of the motor during operation of the vacuum pumping system at a relatively high pressure,wherein the controller is configured to decrease the maximum value for the current in the motor to be no greater than the continuous operation current rating of the motor below the relatively high pressure, andwherein the controller is configured to increase the maximum value for the rotational frequency of the motor during operation of the vacuum pumping system at a relatively low pressure.49. The vacuum pumping system of claim 48 , wherein the controller is configured to increase the maximum value for the current in the motor during operation of the vacuum pumping system at a relatively high pressure from a normal continuous rating of the motor temporarily to a value higher than the normal continuous rating of the motor.50. The vacuum pumping system of claim 48 , wherein the controller is configured to receive input from at least one sensor for monitoring one or more states within the vacuum pumping system claim 48 , and ...

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Номер записи: 57
04-05-2017 дата публикации

Compressor and method for controlling a compressor

Номер: US20170122306A1
Автор: Chaehong LIM, Hyeongseok KIM, Jongyoon Choi, Nayi RYU, Seunggeun BAEK, Sungjin Lim
Принадлежит: LG ELECTRONICS INC

A linear compressor and a method for controlling a compressor are provided. The compressor may include a piston that reciprocates within a cylinder, a linear motor that supplies a driving force to the piston, a discharge device through which a refrigerant compressed in the cylinder by the reciprocating motion of the piston is discharged, a pressure changing device that changes a variation rate of pressure applied to the piston before the piston reaches a virtual discharge surface (VDS) during the reciprocating motion, to prevent collision between the piston and the discharge device. The virtual discharge surface may be formed on at least a portion of the discharge device facing a compression space within the cylinder.

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Номер записи: 58
27-05-2021 дата публикации

CURRENT ESTIMATING DEVICE, ELECTRIC COMPRESSOR, CURRENT ESTIMATING METHOD, AND MOTOR CURRENT EFFECTIVE VALUE ESTIMATING METHOD

Номер: US20210155080A1
Автор: Hattori Makoto, HIGUCHI Hiroto, KAMITANI Hiroyuki, Mori Masahiro, WATANABE Kyohei
Принадлежит: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

A current estimating device that estimates a capacitor current of a high-voltage circuit for driving a motor, wherein the current estimating device calculates a voltage utilization rate using the input voltage of an inverter included in the high-voltage circuit and the speed of the motor, calculates a first constant by applying the voltage utilization rate to a predetermined first arithmetic expression, and calculates the capacitor current of an electrical condenser included in the high-voltage circuit by multiplying the first constant by a motor current effective value. 17-. (canceled)8. A current estimating device for estimating a capacitor current of a high-voltage circuit which drives a motor , the device comprising:a voltage utilization rate calculation unit which calculates a voltage utilization rate using an input voltage of an inverter included in the high-voltage circuit and a rotation speed of the motor;a first constant calculation unit which applies the voltage utilization rate to a predetermined first calculation expression to calculate a first constant; anda capacitor current calculation unit which multiplies the first constant by a motor current effective value of the motor to calculate a capacitor current of a capacitor included in the high-voltage circuit.10. The current estimating device according to claim 8 , further comprising:a second constant calculation unit which applies the voltage utilization rate to a predetermined second calculation expression to calculate a second constant; anda motor current effective value calculation unit which multiplies the second constant by an input current of the inverter to calculate the motor current effective value.12. The current estimating device according to claim 9 , further comprising:a second constant calculation unit which applies the voltage utilization rate to a predetermined second calculation expression to calculate a second constant; anda motor current effective value calculation unit which ...

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Номер записи: 59
10-05-2018 дата публикации

HIGH PRESSURE FLUID SYSTEM

Номер: US20180128251A1
Автор: SMITH Alan, Wood Nigel
Принадлежит:

A system for delivery of a high viscosity fluid comprises a variable speed pump. A circuit through which the fluid is pumped comprises a loop having a plurality of fluid off-takes from the circuit. A controller controls the operation and speed of the pump, (i) such that the pump pumps the fluid in the circuit in a high pressure mode in which fluid flows from the pump to the fluid off-takes through both ends of the loop. During the high pressure mode, the controller controls the speed of the pump to maintain the pressure of the fluid in the circuit. The controller also controls the operation and speed of the pump, (ii) such that the pump pumps the fluid around the circuit in a low pressure mode during periods when none of the fluid off-takes are being used. 1. A system for delivery of a high viscosity fluid , comprising:a variable speed pump;a circuit through which the fluid is pumped the circuit comprising a loop having a plurality of fluid off-takes; anda controller controlling operation and speed of the pump (i) to pump the fluid in the circuit in a high pressure mode wherein fluid flows from the pump to the fluid off-takes through both ends of the loop and wherein the controller controls the speed of the pump to maintain the pressure of the fluid in the circuit, and (ii) to pump the fluid around the circuit in a low pressure mode during periods when none of the fluid off-takes are being used.2. The system of claim 1 , wherein in the low pressure mode claim 1 , fluid flows from the pump through a first end of the loop and out through a second end of the loop.3. The system of claim 1 , wherein the system is installed in a manufacturing facility claim 1 , with the fluid off-takes located at locations in a product manufacturing area.4. The system of wherein the variable speed pump is located at a booster station claim 1 , the pump having an inlet receiving fluid from a medium pressure pumping station.5. The system of wherein the medium pressure pumping station ...

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Номер записи: 60
11-05-2017 дата публикации

Strategy to Manage Pump Interactions in Multi-Rig Applications

Номер: US20170130712A1
Автор: Evan E. Jacobson, Koti Ratnam Padarthy, Venkata Bhagavathi Dandibhotla, Yanchai Zhang
Принадлежит: Caterpillar Inc

A system for managing a pump arrangement is provided. The system may include at least one pressure sensor configured to generate a pressure signal indicative of a pump pressure of a targeted pump within the pump arrangement, and at least one controller in electrical communication with the pressure sensor. The controller may be configured to receive the pressure signal from the pressure sensor, apply a band pass filter on the pressure signal to filter frequencies associated with untargeted pumps, isolate at least a base frequency of the filtered pressure signal, and detect at least the pump pressure of the targeted pump based on the base frequency.

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Номер записи: 61
23-04-2020 дата публикации

Vacuum pump apparatus, and pump main body unit, control unit, and spacer each for use in vacuum pump apparatus

Номер: US20200124043A1
Автор: Hideki Omori, Kengo Saegusa, Yanbin Sun, Yoshiyuki Sakaguchi
Принадлежит: Edwards Japan Ltd

Provided is a vacuum pump apparatus which allows reductions in thickness, weight, size, and cost of a vacuum pump control device. In the vacuum pump apparatus, a pump main body unit and a control unit which controls driving of the pump main body unit are integrated with each other. The vacuum pump apparatus has a configuration in which a spacer configured to support a load applied to a housing of the control unit is provided between a base of the pump main body unit and the housing of the control unit.

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Номер записи: 62
03-06-2021 дата публикации

ELECTRIC COMPRESSOR

Номер: US20210164459A1
Автор: KINOSHITA Yusuke, Okada Satoshi, Tada Yoshifumi
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

An electric compressor includes an electric motor, and a motor controller configured to drive the electric motor. The motor controller includes a high voltage circuit board on which switching elements are mounted, a low voltage circuit board on which a control circuit controlling switching operation of the switching elements is mounted, an input connector, an output connector, and a current sensor. The high voltage circuit board and the low voltage circuit board are stacked with each other. The output connector is integrated with a detection busbar that provides electrical connection between the high voltage circuit board and the low voltage circuit board, and through which detection signals indicative of the output current are output to the control circuit. 1. An electric compressor , comprising:an electric motor; anda motor controller configured to drive the electric motor, a high voltage circuit board on which switching elements are mounted;', 'a low voltage circuit board on which a control circuit controlling switching operation of the switching elements is mounted;', 'an input connector that provides electrical connection between the high voltage circuit board and the low voltage circuit board, and through which control signals from the control circuit are input into the switching elements;', 'an output connector through which output current is output to the electric motor, and which is electrically connected to the high voltage circuit board; and', 'a current sensor that is mounted on the high voltage circuit board, and detects the output current to the electric motor,, 'the motor controller includingthe electric compressor being configured such that the high voltage circuit board and the low voltage circuit board are stacked with each other, whereinthe output connector is integrated with a detection busbar that provides electrical connection between the high voltage circuit board and the low voltage circuit board, and through which detection signals ...

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Номер записи: 63
02-05-2019 дата публикации

ENERGY OPTIMIZATION DEVICE

Номер: US20190131832A1
Автор: Ibarra Salinas Rodrigo Cesar
Принадлежит:

An energy optimization device, which comprises a magnetic circuit composed of a coil and a ferromagnetic core, which achieves an acceleration of charges by means of which said loads are reintroduced back into the network, achieving an effective saving of active power. 18-. (canceled)9. An energy optimization device for use in single-phase or three-phase alternating current electric networks , who can be connected to inductive , resistive , capacitive current loads or mixed current loads and comprising: a ferromagnetic core member in the form of a square made of a ferromagnetic material , formed by two secondary members parallel to each other and a first core member and a second core member parallel to each other; a winding called work winding , which surrounds the first core member , said first work coil having a power input of the supply network in phase and an output in the same phase , and additionally having one or more intermediate connections in several points of the coil who can be chosen to be connected with the mains supply depending on the input voltage; a coil called the control coil that surrounds the second core member , counting on a supply input of the supply network in phase and a neutral outlet , being able to connect its phase in the appropriate outlet depending on the input voltage of each country or region; where in single-phase systems , the input of the chosen work coil is connected to the power supply of the supply network and the output is connected in series with the loads; where the input of the control coil is connected to the supply of the supply network and its neutral connection is connected to a neutral conductor. Wherein the work coil has the function of generating a self-induced field with a single-phase current , priming said ferromagnetic core with a magnetic flux load; and where the control coil is excited by a fixed monobasic current and generates a fixed electromagnetic field , accelerating the charge of the ferromagnetic core ...

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Номер записи: 64
17-05-2018 дата публикации

Method For Operating The Fluid Delivery System

Номер: US20180135607A1
Автор: BEHRENDT Gerald
Принадлежит:

A method for operating a fluid delivery system, with a fluid delivery pump, voltage manipulator and an electric motor integrated into an electrical grid. The electric motor is controlled by a voltage applied to the electric motor and the voltage manipulator is upstream from the electric motor. The following steps include determining the desired fluid output, determining the required rotational speed of the pump to convey the desired fluid output, determining the required voltage to reach the required pump rotational speed, and activating the voltage manipulator to achieve the required voltage. 112.-. (canceled)13. A method for operating a fluid delivery system integrated into an electrical grid , having a fluid delivery pump , a voltage manipulator and an electric motor downstream of the voltage manipulator and controlled by a voltage applied to the electric motor , comprising:determining a desired fluid output;determining a required rotational speed of the fluid delivery pump to convey the desired fluid output;determining a required voltage to reach the required rotational speed of the fluid delivery pump; andactivating the voltage manipulator to achieve the required voltage.14. The method as claimed in claim 13 , further comprising:activating the voltage manipulator when required voltage to reach the required rotational speed of the fluid delivery pump is outside a pre-defined voltage range.15. The method as claimed in claim 14 , further comprising:determining the pre-defined voltage range based at least in part on a voltage level of the electrical grid.16. The method as claimed in claim 13 ,wherein the electrical grid is operated at a specifiable mains voltage, andwherein the voltage applied to the electric motor can be reduced to a level below the specifiable mains voltage by the voltage manipulator.17. The method as claimed in claim 13 ,wherein the electrical grid is operated at a specifiable mains voltage, andwherein the voltage applied to the electric motor ...

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Номер записи: 65
09-05-2019 дата публикации

BEVERAGE PRODUCTION MODULE AND METHOD FOR OPERATING A BEVERAGE PRODUCTION MODULE

Номер: US20190136850A1
Автор: Etter Stefan, Piai Guido
Принадлежит:

A beverage production module includes a pump for delivering a fluid from a tank to an extraction chamber, a power source for the pump and a controller for operating the pump and for controlling the voltage applied from the power source to the pump, wherein the controller is adapted to operate the pump at a normal operation voltage (U) and to operate the pump over a predefined time (T T) at a reduced voltage level (U U). A method for operating the pump of a beverage production module is also provided. 1: A beverage production module comprising:a pump configured to deliver a fluid from a reservoir to a heating unit in the module and then to an extraction chamber in the module, the extraction chamber configured to house a pouch or capsule that contains a beverage ingredient;a power source configured to apply a voltage to the pump, the power source is connected to the pump by a pump triac; anda controller configured to operate the pump and the heating unit and control the pump triac to thereby control the voltage applied from the power source to the pump;a casing that houses the pump, the heating unit, the extraction chamber, the power source, and the controller, wherein the casing comprises a surface comprising a slot configured for insertion of the pouch or capsule through the slot; anda graphical user interface attached to the casing,wherein the controller is configured to control the pump triac to operate the pump after a start at a first reduced voltage level; after a first predefined time, to control the pump triac to operate the pump at a normal operation voltage; and, during the operation of the pump, to control the pump triac to operate the pump for a second predefined time at a second reduced voltage level to enhance the quality of the beverage that is produced by the module.2: The beverage production module of wherein at least one of the first and second reduced voltage levels is a constant voltage.3: The beverage production module of wherein at least one of ...

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Номер записи: 66
10-06-2021 дата публикации

Method and Device for Determining a Wear Condition in a Hydrostatic Pump

Номер: US20210172433A1
Автор: BECHER Dirk
Принадлежит:

A method for determining a current wear (w) of a hydrostatic pump, particularly of a radial piston pump, with a variable-speed drive, where the pump is connected to a fluid passage, in which a fluid is pumped by the pump to create a current actual volume flow in the fluid passage. A current actual volume flow (Q) is determined, by measuring the volume flow in the fluid passage at a predetermined drive-vector, a computed volume flow (Q) is determined, by a first computational method, at the predetermined drive-vector, and the current wear (w) of the pump is determined, by a second computational method, which relates the current actual volume flow (Q) to the computed volume flow (Q). 1. A method for determining a current wear (w) of a radial piston pump , with a variable-speed drive , where the pump is connected to a fluid passage , in which a fluid is pumped by the pump , the pump creating a current actual volume flow in the fluid passage , the method comprising:determining a current actual volume flow (Qact) by measuring the volume flow in the fluid passage at a predetermined drive-vector including a first pressure and a second pressure of the fluid, respectively;determining a computed volume flow (Qcomp) by a first computational method, at the predetermined drive-vector including the first pressure and the second pressure of the fluid, respectively; anddetermining the current wear (w) of the pump by a second computational method, which relates the current actual volume flow (Qact) to the computed volume flow (Qcomp).2. The method of claim 1 , wherein the second computational method determines a ratio claim 1 , which is a quotient of the actual volume flow (Qact) at the predetermined drive-vector to the computed volume flow (Qcomp) at the predetermined drive-vector.3. The method of claim 1 , wherein the second computational method determines a ratio claim 1 , which is an average claim 1 , particularly a weighted average claim 1 , of a set of quotients claim 1 , ...

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Номер записи: 67
10-06-2021 дата публикации

COMPRESSOR OR PUMP EQUIPPED WITH A CONTROL FOR THE REGULATION OF THE WORKING RANGE AND WORKING METHOD APPLIED FOR THE REGULATION

Номер: US20210172436A1
Автор: DANIELS Ivo, Stuer Antoon
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

A compressor or pump, including at least one compressor or pump element for pressurised supply of a fluid to a network of consumers of such pressurised fluid; a motor coupled with the compressor or pump element. The compressor or pump is equipped with a control having a basic control for the nominal regulation of one or more control parameters (Q, pw) as a function of a desired, set working point of the compressor within the nominal set working range of the compressor or pump, set during design. The control is further provided with an additional control function for static or dynamic adjustment of the working range limit values. The nominal control range of one or more control parameters is adjusted as a function of the actual working conditions of the compressor or pump that deviate from the nominal working conditions. 124.-. (canceled)25. A compressor or pump , comprising at least one compressor or pump element for pressurised supply of a fluid to a network of consumers of such pressurised fluid , a motor coupled with the compressor or pump element , wherein the compressor or pump is designed to operate within a certain nominal working range determined by the nominal control ranges between maximum and minimum allowed values of the control parameters of the compressor or pump in nominal working conditions and wherein the compressor or pump is equipped with a control having a basic control for the nominal regulation of one or more control parameters (flow rate Q , working pressure pw) as a function of a desired , set working point of the compressor within the nominal set working range of the compressor or pump set during design ,wherein the control is further provided with an additional control function for static or dynamic adjustment of the working range limit values, wherein the nominal control range of one or more control parameters is adjusted as a function of the actual working conditions of the compressor or pump that deviate from the nominal working ...

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Номер записи: 68
25-05-2017 дата публикации

OPERATIONAL CONTROL OF WELLSITE PUMPING UNIT WITH DISPLACEMENT DETERMINATION

Номер: US20170146007A1
Автор: Robison Clark E., THOMAS Benson, TRAPANI James S.
Принадлежит:

A well pumping system can include an actuator that reciprocably displaces a rod string, a flowmeter that measures flow of a fluid between a power source and the actuator, and a control system that modifies reciprocal displacement of the rod string by the actuator, in response to an output of the flowmeter. A well pumping method can include reciprocably displacing a rod string, continuously determining a velocity profile of the rod string, and modifying the velocity profile while the rod string reciprocably displaces, in response to an output of a flowmeter. Another well pumping method can include reciprocably displacing a rod string with an actuator, continuously determining displacement in response to an output of a flowmeter, and modifying reciprocating displacement of the rod string by the actuator, in response to the output of the flowmeter. 1. A well pumping system , comprising:an actuator that reciprocably displaces a rod string;a flowmeter that measures flow of a fluid between a power source and the actuator; anda control system that modifies reciprocal displacement of the rod string by the actuator, in response to an output of the flowmeter.2. The well pumping system of claim 1 , further comprising at least one discrete position sensor that detects when a member of the actuator or an upper end of the rod string is at a predetermined position.3. The well pumping system of claim 1 , wherein the control system modifies a stroke extent of a member of the actuator claim 1 , in response to the output of the flowmeter.4. The well pumping system of claim 1 , wherein the control system modifies a stroke extent of the rod string at surface claim 1 , in response to the output of the flowmeter.5. The well pumping system of claim 1 , wherein the control system modifies a stroke extent of the rod string proximate a downhole pump claim 1 , in response to the output of the flowmeter.6. The well pumping system of claim 1 , wherein the control system maintains a preselected ...

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Номер записи: 69
07-06-2018 дата публикации

Refrigeration cycle device

Номер: US20180156217A1
Автор: Akihiro Kyogoku, Akira Fujitaka, Fuminori Sakima, Hideaki Matsuo, Hiroaki Nakai, Kenji Takaichi, Shigehiro Sato
Принадлежит: Panasonic Intellectual Property Management Co Ltd

The present invention includes a refrigeration cycle circuit that includes compressor, indoor heat exchanger, expansion valve, and outdoor heat exchanger that are connected to each other. A working fluid containing R1123 (1,1,2-trifluoroethylene) and R32 (difluoromethane) is used as a refrigerant sealed in the refrigeration cycle circuit, and an electric motor driving device that drives an electric motor of compressor includes a rotational speed estimator. The rotational speed estimator estimates rotational speed based on information on a detection value of an electric current input to the electric motor or a magnetic pole position of a rotor that constitutes the electric motor.

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Номер записи: 70
22-09-2022 дата публикации

Fracturing apparatus and control method thereof, fracturing system

Номер: US20220298906A1
Автор: Chunqiang Lan, Dawei ZHAO, Huaizhi ZHANG, Jian Zhang, Jifeng ZHONG, Liang LV, Rikui Zhang, Ruijie DU, SHENG Chang, Shouzhe LI, Shuzhen CUI, Xiaolei Ji, Xincheng Li
Принадлежит: Yantai Jereh Petroleum Equipment and Technologies Co Ltd

A fracturing apparatus may include a first plunger pump including a first power end and a first hydraulic end; a prime mover including a first power output shaft; and a first clutch including a first connection portion and a second connection portion. The first power end of the first plunger pump includes a first power input shaft, the first connection portion is coupled to the first power input shaft, the second connection portion is coupled to the first power output shaft of the prime mover.

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Номер записи: 71
23-05-2019 дата публикации

Coating agent pump

Номер: US20190154019A1
Автор: Alexander Carls, Robin Kaufmann
Принадлежит: Duerr Systems AG

The disclosure relates to a coating agent pump for conveying a coating agent in a coating installation, in particular for conveying paint in a painting installation, with an electric drive motor for driving the coating agent pump so that the coating agent pump continuously changes its pump position during operation. The disclosure provides a position measuring system for quantitatively detecting the pump position of the coating agent pump.

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Номер записи: 72
23-05-2019 дата публикации

METHOD FOR PROTECTING AN ELECTRIC MOTOR OF A DEVICE WITH A MOTOR DRIVEN CONSUMER WITH A CONTINUOUS CAPACITY CONTROL SYSTEM AND CHOICE OF SUCH A MOTOR

Номер: US20190154024A1
Автор: DE KEYSER Karel
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

Method for protecting an electric motor of a motor driven consumer equipped with a controller for controlling the capacity or the power of the consumer, comprises the following steps: 124.-. (canceled)25. A Method for protecting an electric motor of a motor driven consumer equipped with a controller for controlling the capacity or the power of the consumer , wherein the method comprises the following steps:determining a thermal condition of the motor by a direct measurement on the motor;limiting a maximum capacity or a maximum power of the consumer as a function of the thermal condition; andwherein the electric motor is provided with one or more electric windings and with one or more bearings, whereby for the determining of the thermal condition of the motor the method comprises the step of measuring a temperature of one or more windings and/or of one or more bearings.26. The method according to claim 25 , wherein the measurement of the temperature use is made of one or more sensors whose signal is fed back directly to the controller.27. The method according to claim 26 , wherein at least one winding of the motor two or more sensors are provided along the length of the winding.28. The method according to claim 26 , wherein for each of at least a proportion of the sensors a maximum value of the temperature is entered in the controller beforehand and the method comprises the following steps:for at least one sensor, comparing the measured temperature to the corresponding maximum value entered beforehand, continuously or at certain time intervals;the limiting a maximum capacity and/or a maximum power of the consumer by a preset value when the measured temperature of the sensor has reached or exceeded the corresponding maximum value.29. The method according to claim 28 , wherein when the temperature of the sensor has fallen to below the corresponding maximum value claim 28 , the maximum capacity or the maximum power of the consumer is increased again until the maximum ...

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Номер записи: 73
14-06-2018 дата публикации

Brushless direct current electric motor driving control method and system of electrical water pump

Номер: US20180167005A1
Автор: Byoung Hoon Choi, Dong Soo Shim, Geun Oh DONG, Hyeong Geun Song, Jae Shin Yi, Yeon Ho Kim
Принадлежит: Hyundai Motor Co, Kia Motors Corp, Myunghwa Ind Co Ltd

A method and system of controlling driving of a brushless DC electric motor (BLDC) of an electric water pump are provided. The method includes estimating an initial position of a rotor using a magnitude of a current detected in a three-phase coil wound on a stator and converting a current magnitude that reflects a rotational angle of the rotor with respect to the initial position into two direct currents based on the three-phase current. The converted direct currents are output and a rotational angle, a speed, a flux and a torque of the rotor are acquired based on values of the three-phase current, a voltage generated according to flow of the three-phase current, a predetermined coil resistance, and an inductance input. A speed of the motor is then adjusted based on the acquired rotational angle, speed, flux, and torque of the rotor.

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Номер записи: 74
22-06-2017 дата публикации

Electric pump system

Номер: US20170175745A1
Автор: Hiroki Kagawa
Принадлежит: JTEKT Corp

An electric pump system includes a pump, a motor, and a control circuit. The motor drives the pump. The control circuit controls operation of the motor. The control circuit includes a determination circuit, a generation circuit, and a drive circuit. The determination circuit determines the amount of fluid to be discharged from the pump. The generation circuit generates, based on a maximum rotational speed of the motor, a control profile that is used to control the number of revolutions of the motor. The maximum rotational speed of the motor is set according to the environment in which the pump is used. The control profile is used for the pump to discharge the amount of fluid determined by the determination circuit in the shortest time. The drive circuit drives the motor based on the control profile generated by the generation circuit.

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Номер записи: 75
08-07-2021 дата публикации

ACTIVE HYDRAULIC RIPPLE CANCELLATION METHODS AND SYSTEMS

Номер: US20210207597A1
Автор: "OShea Colin Patrick", Selden Brian Alexander, Tucker Clive
Принадлежит: ClearMotion, Inc.

Presented herein are systems and methods for attenuating flow ripple generated by a hydraulic pump. In certain aspects, a method and system for operating a hydraulic positive displacement pump according to a stabilized command profile are disclosed, such that flow ripple generated by operation of the pump according to the stabilized command profile is attenuated as compared to operation of the pump according to a corresponding nominal command profile. In other aspects, a pressure-balanced active buffer is disclosed that allow for at least partially cancelling flow ripple in a hydraulic circuit comprising a pump. In another aspect, a method for generating ripple maps for a pump is disclosed. Such ripple maps may be used, for example, to determine the stabilized command profile used to operate the pump, or may be used by the pressure-balanced active buffer to counteract ripple in the hydraulic circuit. 148-. (canceled)49. A pressure-balanced active buffer for mitigating flow ripple , the pressure-balanced active buffer comprising:a buffer reservoir;a balance reservoir;a piston assembly comprising a first surface exposed to fluid in the buffer reservoir and a second surface exposed to fluid in the balance reservoir; andan actuator physically attached to the piston assembly.50. The pressure-balanced active buffer of claim 49 , wherein the piston assembly comprises:a buffer piston comprising the first surface;a balance piston comprising the second surface; andan intermediate chamber interposed between the buffer piston and the balance piston, wherein the intermediate chamber comprises a compressible fluid, wherein the actuator is physically attached to the buffer piston.51. The pressure-balanced active buffer of comprising:a buffer fluid channel in fluid communication with the buffer reservoir; anda balance fluid channel in fluid communication with the balance reservoir.52. The pressure-balanced active buffer of comprising:an actuator controller in communication with the ...

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Номер записи: 76
30-06-2016 дата публикации

Electronic pump motor control

Номер: US20160186740A1
Автор: Andrew J. Klaphake, Eric J. MJOLHUS, Jesse L. LANIE, Suresha S. Nijaguna
Принадлежит: GRACO MINNESOTA INC

A motor control system for a lubricant pump motor comprises a pump system power input, a motor drive, a current sensor, a lubrication controller, and a drive controller. The pump system power input is configured to supply system power. The motor drive is configured to drive the lubricant pump motor using the system power. The current sensor is disposed between the pump system power input and the motor drive to sense an input current of the system power. The lubrication controller configured to provide motor activation signals. The drive controller is disposed to receive the motor activation signals via an isolated digital input, and to control the motor drive as a function of the sensed input current and a user-defined current set-point, in response to the activation signals.

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Номер записи: 77
13-06-2019 дата публикации

SYSTEM FOR TIRE INFLATION

Номер: US20190176548A1
Автор: Richardson Brandon
Принадлежит:

A system for tire inflation including a drive mechanism defining a rotational axis, including an eccentric mass that offsets a center of mass of the drive mechanism from the rotational axis along a radial vector; a pump arranged radially distal the rotational axis of the drive mechanism, including a chamber defining a chamber lumen, and a reciprocating element arranged at least partially within the chamber lumen and translatable along a pump axis; a drive coupler coupled between the drive mechanism at a first position and the reciprocating element at a second position fixed to the reciprocating element; a torque regulation mechanism; and a controller, communicatively coupled to the torque regulation mechanism; wherein the system is operable between at least a first mode and a second mode by the torque regulation mechanism in cooperation with the controller. 1. A system for tire inflation comprising: 'an eccentric mass that offsets a center of mass of the drive mechanism from the rotational axis along a radial vector, the eccentric mass rotatable about the rotational axis;', 'a drive mechanism defining a rotational axis, comprisinga drive coupler having a first and second end, the first end coupled to the drive mechanism radially distal the rotational axis;a reciprocating pump coupled to the second end of the drive coupler;a torque regulation mechanism configured to apply a controllable torque to the eccentric mass, the torque regulation mechanism further configured to mechanically engage the eccentric mass and the drive coupler in a first mode, and mechanically disengage the eccentric mass and the drive coupler in a second mode; and the first mode, wherein the controller controls the torque regulation mechanism to supply a first torque to the eccentric mass, such that the torque regulation mechanism maintains the eccentric mass at a substantially constant non-zero angle between a gravity vector and the radial vector; and', 'the second mode, wherein the controller ...

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Номер записи: 78
07-07-2016 дата публикации

System and method for health management of pumping system

Номер: US20160195082A1
Автор: Deepak Aravind, Herman Lucas Norbert Wiegman
Принадлежит: General Electric Co

A method implemented by at least one processor includes receiving a plurality of operating parameters of a pumping system, wherein the pumping system has a plurality of pump-units powered by a generator-unit. The operating parameters include a pump-unit parameter and a generator-unit parameter. The method also includes receiving reference data of the pumping system, wherein the reference data includes measurements from the pumping system representative of performance of the plurality of pump-units. The method also includes determining one or more health parameters corresponding to one or more pump-units based on the plurality of operating parameters and the reference data. The method further includes modifying one or more input parameters of the generator-unit based on the one or more health parameters for continued operation of the pumping system.

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Номер записи: 79
20-06-2019 дата публикации

Closed Loop Torque Compensation for Compressor Applications

Номер: US20190186480A1
Автор: Deb Debraj, Kankanala Ramesh, Kulkarni Prasad
Принадлежит: MICROCHIP TECHNOLOGY INCORPORATED

Embodiments of the present disclosure include a motor controller with a processor and a machine readable medium. The medium includes instructions that, when loaded and executed by the processor, cause the processor to receive an estimated or sensed speed of a motor, extract a mechanical frequency component from the estimated or sensed speed, transform the mechanical frequency into direct quadrature (DQ) domain at the mechanical frequency, control the mechanical frequency to zero, and generate a dampening signal for torque based upon the controlled mechanical frequency. 1. A motor controller , comprising:a processor; and receive an estimated or sensed speed of a motor;', 'extract a mechanical frequency component from the estimated or sensed speed;', 'transform the mechanical frequency into direct quadrature (DQ) domain at the mechanical frequency;', 'control the mechanical frequency to zero; and', 'generate a dampening signal for torque based upon the controlled mechanical frequency., 'a machine readable medium, the medium comprising instructions that, when loaded and executed by the processor, cause the processor to2. The motor controller of claim 1 , further including instructions for causing the processor to:generate the dampening signal by converting the controlled mechanical frequency at zero to DQ domain at an electrical frequency.3. The motor controller of claim 2 , further including instructions for causing the processor to feed forward the converted mechanical frequency at zero to DQ domain at an electrical frequency to a next iteration of control.4. The motor controller of claim 1 , further including instructions for causing the processor to feed the controlled mechanical frequency forward to a next iteration of control.5. The motor controller of claim 1 , further including instructions for causing the processor to extract the mechanical frequency component from the estimated or sensed speed by applying a notch filter.6. The motor controller of claim 1 , ...

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Номер записи: 80
22-07-2021 дата публикации

Pressure Pump Performance Monitoring System Using Torque Measurements

Номер: US20210222690A1
Автор: Joseph A. Beisel
Принадлежит: Halliburton Energy Services Inc

A monitoring system may include a strain gauge, a position sensor, and a torque sensor. The strain gauge may measure strain in a chamber of the pressure pump and generate a strain signal representing the strain measurement. The position sensor may measure a position of a rotating member and generate a position signal representing the position measurement. The torque sensor may measure torque in a component of the pressure pump and generate a torque signal representing the torque measurement. The torque measurement may be used with the strain measurement and the position measurement to determine a condition of the pressure pump.

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Номер записи: 81
14-07-2016 дата публикации

Method for Improving Metering Profiles of Displacement Pumps

Номер: US20160201657A1
Автор: Fabian Kennel, Steven Liu
Принадлежит: ProMinent GmbH

The invention relates to a method for determining hydraulic parameters in a displacement pump, wherein the displacement pump has a movable displacement element, which bounds the metering chamber, which is connected to a suction and pressure line by means of valves, wherein a drive is provided for the oscillating motion of the displacement element. In order that pumped fluid can be alternately sucked into the metering chamber via the suction line and pressed from the metering chamber via the pressure line by means of an oscillating motion of the displacement element, a physical model having hydraulic parameters according to the invention is established for the hydraulic system, the force exerted by the displacement element on the fluid located in the metering chamber or the pressure in the metering chamber is determined and the position of the displacement element is determined, and at least one hydraulic parameter is calculated by means of an optimization calculation.

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Номер записи: 82
12-07-2018 дата публикации

ON-BOARD FLUID MACHINE

Номер: US20180194200A1
Автор: AMBO Shunsuke, KAGAWA Fumihiro, NAGATA Yoshiki
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

An on-board fluid machine includes a housing configured to allow fluid to flow into the housing, an electric motor accommodated in the housing, and a driver that is supplied with DC power and drives the electric motor. The driver includes a low-pass filter circuit and an inverter circuit. The low-pass filter circuit includes a common mode choke coil and a capacitor. The driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current. 1. An on-board fluid machine comprising:a housing configured to allow fluid to flow into the housing;an electric motor accommodated in the housing; and a low-pass filter circuit configured to reduce common mode noise and normal mode noise that are included in the DC power, and', 'an inverter circuit configured to convert the DC power, from which the common mode noise and the normal mode noise have been reduced, to AC power, wherein', a common mode choke coil including a ring core and a first coil and a second coil that are wound around the ring core, and', 'a capacitor electrically connected to the common mode choke coil,, 'the low-pass filter circuit includes'}], 'a driver that is supplied with DC power and drives the electric motor, wherein the driver includes'}the driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current, and wherein the damping unit is configured to change a frequency characteristic of a phase difference of the common node choke coil, andthe low-pass filter circuit has a resonant frequency that is set to a value in a frequency range in which the phase difference of the common mode choke coil has been decreased by the damping unit.2. The on-board fluid machine according to claim 1 , whereinthe first coil and the second coil are opposed to each other in a first direction that is orthogonal to an axial direction of the ring core,the ring core ...

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Номер записи: 83
13-07-2017 дата публикации

Integrated pump guard and control interlock

Номер: US20170198688A1
Автор: Christopher A. Lins, James M. Dalton, Justin G. Johnston, Max Carideo, Steve J. Wrobel
Принадлежит: GRACO MINNESOTA INC

A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.

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Номер записи: 84
26-07-2018 дата публикации

Sump Pump Remote Monitoring Systems and Methods

Номер: US20180209426A1
Автор: Ambrose Jeffrey C., Bishop Michael B., Boese Thomas G.
Принадлежит:

Systems and methods for sump pump remote monitoring can include control circuitry integrated into a portable housing, with a backup sump pump connected to the control circuitry. The control circuitry can be powered by a line power and when the line power is not available, the control circuitry can be powered by a battery power. The control circuitry can be connected to a control panel, and the control circuitry can include a pressure transducer, the pressure transducer to measure a pressure in a fluid level sensor, and based on the measured pressure, the control circuitry to adjust the speed of the backup sump pump. A wireless controller can be connected to the control circuitry, the wireless controller for wirelessly receiving monitoring instructions and wirelessly transmitting backup sump pump status data, with the control circuitry providing an indication of the backup sump pump status data to the control panel. 1. A method for remotely monitoring a fluid pump , the method comprising:initiating a remote monitoring procedure using a remote device;receiving a request to initiate the remote monitoring procedure at a wireless controller, the wireless controller being a component of the fluid pump; andproviding an operational status for the fluid pump at the remote device, the operational status indicating whether the fluid pump is functional.2. The method of claim 1 , wherein the operational status includes a weekly test cycle.3. The method of claim 1 , wherein the operational status includes at least one alert.4. The method of claim 1 , wherein the wireless controller only transmits wireless communications to the remote device when queried by the remote device.5. The method of claim 1 , wherein the remote device is a smartphone.6. The method of claim 1 , wherein the wireless controller wirelessly receiving monitoring instructions and wirelessly transmitting pump status data.7. The method of claim 6 , wherein the wireless controller is programmed to transmit a ...

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Номер записи: 85
25-06-2020 дата публикации

ELECTRIC PUMP

Номер: US20200200166A1
Автор: ISHII Tomoya, Obana Ryota, Takeno Motoki, YAMAMOTO Takeru
Принадлежит:

An electric pump includes a pump unit, a motor and a controller. The pump unit is configured to pump fluid by a rotating operation. The motor is a brushless direct-current motor and configured to rotationally drive the pump unit. The controller is configured to control a current to be supplied to the motor. The controller is configured to switch between voltage control for controlling the current to be supplied to the motor based on a target voltage and current control for controlling the current to be supplied to the motor based on a target current. 1. An electric pump comprising:a pump unit configured to pump fluid by a rotating operation;a brushless direct-current motor configured to rotationally drive the pump unit; anda controller configured to control a current to be supplied to the motor, the controller being configured to switch between voltage control for controlling the current to be supplied to the motor based on a target voltage and current control for controlling the current to be supplied to the motor based on a target current.2. The electric pump according to claim 1 , wherein the controller is configured to select claim 1 , as an operation mode claim 1 , one of a restriction possible mode for performing control by switching between the voltage control and the current control and a non-restriction mode for performing only the voltage control.3. The electric pump according to claim 2 , wherein:the controller sets an upper limit current value to be supplied to the motor to a limit value in the restriction possible mode;the controller is configured to, in the restriction possible mode, perform the voltage control in a situation where the current to be supplied to the motor is less than the limit value; andthe controller is configured to, in the restriction possible mode, supply the current less than the limit value to the motor by the current control, instead of the voltage control, in a situation where the current to be supplied to the motor is equal to ...

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Номер записи: 86
09-10-2014 дата публикации

System and method for controlling a system that includes fixed speed and variable speed compressors

Номер: US20140303805A1
Автор: Benjamin Hayes, Caleb Ryan Joiner, James Philip Crolius, John Qianghua Zhou, Roger Joseph Voorhis, William Hansen
Принадлежит: Trane International Inc

A system and method for controlling a system that includes fixed speed and variable speed compressors are described. The method generally allows the system, for example, a heating, ventilating, and air condition (HVAC) system that includes fixed speed and variable speed compressors, to maximize unit modulating capability. The method allows the use of a variable speed compressor that is relatively smaller, which can lead to cost savings, easier installation, manufacturing, etc.

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Номер записи: 87
02-07-2020 дата публикации

METHODS AND SYSTEMS TO DETECT AN OPERATION CONDITION OF A COMPRESSOR

Номер: US20200208636A1
Автор: Burnham Randall Scott, Hall Cullen Evan, Lucht Erich Albert, Renken David Jon
Принадлежит:

Embodiments to help detect operation conditions of a compressor of a TRU in real time by a genset are disclosed. The operation conditions of the compressor can be determined by monitoring a parameter pattern of the genset, such as value changes of a horsepower, a torque, an exhaust temperature, fuel consumption and/or a RPM of a prime mover of the genset, or a current drawn from a generator of the genset, over a period of time. In one embodiment, when a scroll compressor is used in the TRU, the scroll compressor may start a periodical load/unload duty cycle when the TRU reaches its setpoint. The periodical load/unload duty cycle of the scroll compressor can be detected based on a corresponding fluctuation pattern in genset parameters. When this periodically fluctuating pattern of ECU parameters and/or current drawn is detected, the prime mover can be switched to a low operation speed. 1. A method to detect an operation condition of a compressor of a transport refrigeration system comprising:obtaining an operation parameter of a generator set, wherein the generator set includes a prime mover that is configured to drive a generator that supplies power to the compressor;determining an operation parameter pattern based on the operation parameter over a period of time; anddetermining the operation condition of the compressor based on the operation parameter pattern.2. The method of claim 1 , wherein determining the operation condition of the compressor based on the operation parameter pattern includes matching the operation parameter pattern to an association between the operation condition of the compressor and a corresponding operation parameter pattern of the generator set.3. The method of claim 1 , wherein the operation parameter of the generator set includes at least one of a RPM (Revolutions Per Minute) claim 1 , a horse power claim 1 , a torque claim 1 , fuel consumption claim 1 , and/or an exhaust temperature of the prime mover claim 1 , and a current drawn from ...

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Номер записи: 88
23-10-2014 дата публикации

Flow Control

Номер: US20140314582A1
Автор: Florin Lungeanu, Gert Kjaer, Lars Hoffmann Berthelsen, Peter Westermann-Rasmussen, Robert W. Stiles, Jr.
Принадлежит: Individual

A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing the first and second performance values. The pumping system further includes means for determining an adjustment value based upon the comparison, means for determining a second motor speed based upon the adjustment value, and means for controlling the motor in response to the second motor speed. In one example, the pumping system includes means for determining a value indicative of a flow rate of water moved by the pump. In addition or alternatively, the pumping system includes a filter arrangement. A method of controlling the pumping system for moving the water of the swimming pool is also disclosed.

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Номер записи: 89
09-08-2018 дата публикации

Air Compressing Apparatus and Control Method

Номер: US20180223832A1
Автор: Yoshiyuki Kanemoto, Zhijia Ren
Принадлежит: Hitachi Industrial Equipment Systems Co Ltd

The purpose of the present invention is to provide an air compressing apparatus capable of establishing a sufficient air-filling rate while reducing noise at the initiation of operations. To solve this problem, in the present invention, the air compressing apparatus comprises a compressor body that compresses air, a motor that drives the compressor body, an inverter that controls the rotation speed of the motor, a control circuit connected to the inverter, and a pressure sensor that detects the pressure of air compressed in the compressor body, wherein the control circuit controls operation of the compressor body by operating at a low speed activation mode that operates the compressor body at a low speed rotational frequency lower than a maximum rotational speed when the air compressing apparatus is activated, and on the basis of a pressure value detected by the pressure sensor and elapsed time from activation, switching from the low speed activation mode to a normal operating mode that operates at variable frequencies including a maximum rotational frequency.

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Номер записи: 90
09-07-2020 дата публикации

INTEGRATED PUMP GUARD AND CONTROL INTERLOCK

Номер: US20200217313A1
Автор: Carideo Max, Dalton James M., Johnston Justin G., Lins Christopher A., Wrobel Steve J.
Принадлежит:

A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell. 1. A paint sprayer comprising:a support frame;a pump assembly removably mounted on the support frame, the pump assembly comprising a piston configured to reciprocate to pump paint for spraying;a door displaceable between an open position and a closed position; and a first part affixed to the door; and', 'a second part affixed to the pump assembly and configured to mate with the first part;, 'an electrical connector comprisingwherein the door disconnects the first and second parts of the electrical connector and permits the pump assembly to be removed when moved from the closed position to the open position.2. The paint sprayer of claim 1 , wherein the door connects the first and second parts of the electrical connector while in the closed position.3. The paint spray of and further comprising:a motor connected to the support frame;a cover connected to the support frame;a pump drive connected to the support frame between the cover and the support frame, wherein the pump drive is configured to covert rotational motion output by the motor to reciprocal motion;wherein the pump assembly is removable from the support frame of the paint sprayer while the cover remains attached to the support frame and the pump drive remains ...

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Номер записи: 91
18-08-2016 дата публикации

Air inlet control for air compressor

Номер: US20160238000A1
Автор: Joseph Suarez
Принадлежит: AC Macao Commercial Offshore Ltd

An air compressor system operably coupled to a power supply including an air storage tank and an air pump including an air manifold having an inlet configured to receive ambient air. The air pump is fluidly coupled to the air storage tank. The air compressor system also includes a motor having a first current level provided by the power supply to operate the air pump, a valve member in fluid communication with the inlet of the air manifold, and a controller operable to move the valve member to either increase or decrease a rate of ambient air traveling into the manifold. The controller monitors the first current level of the motor to change the rate of ambient air traveling into the manifold.

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Номер записи: 92
16-08-2018 дата публикации

Improper Opening Detection Method of Multiple Suction Reciprocating Compressor Suction Valve

Номер: US20180230991A1
Автор: ANDRICH Roberto, MARIA Daniel De Figueiredo
Принадлежит:

The present invention relates to the compressors technological field used preferentially in cooling systems. Problem to be solved: Difficulty in detecting improper opening of the high pressure suction valve in multiple suction reciprocating compressor and, in more severe cases, interrupts operation of low pressure line(s). Problem resolution: Implementation of method which monitors at least one variable proportional to electrical engine torque, and based on detection of at least on positive peak of said variable proportional to torque of said electrical engine, identify and/or detects—in real time—improper opening of the valve. 1. Improper opening detection method of a multiple suction reciprocating compressor suction valve , the reciprocating compressor comprising:at least one compression mechanism comprising at least one compression cylinder, at least one piston capable of reciprocating linear movement inside the cylinder, an at least one “valve-port” set fluidly coupled to the compression cylinder integrated by at least one suction port, at least one actuating suction valve cooperating with its respective suction port, and at least one electrical magnetic generator element capable of interact selectively with the suction valve;at least an electrical engine cooperating with said piston; at least one processing electronic central;at least one sensor capable of measure at least one variable proportional to torque of said electrical engine;the method characterized bythe processing electronic central monitoring at least one variable proportional to torque of said electrical engine by the sensor capable of measuring at least one variable proportional to torque of said electrical engine;the improper opening detection of the suction valve being made by the detection of at least one peak of said variable proportional to torque of said electrical engine during power of the electromagnetic field generator element.2. Method claim 1 , of claim 1 , wherein the variable ...

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Номер записи: 93
01-08-2019 дата публикации

Electric Oil Pump Device

Номер: US20190234398A1
Автор: ENDO Kazutaka
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

An electric oil pump device includes an electric oil pump driven by a motor and a microcomputer that adjusts a control parameter of feedback control related to a motor current value or a motor rotation speed based on an oil temperature estimated based on a relationship between at least one of a hydraulic pressure, the motor current value, or a torque of the electric oil pump and at least one of an oil discharge amount or the motor rotation speed of the electric oil pump. 1. An electric oil pump device comprising:an electric oil pump including a motor and driven by the motor; anda controller that estimates an oil temperature based on a relationship between at least one of a hydraulic pressure, a motor current value, or a torque of the electric oil pump and at least one of an oil discharge amount or a motor rotation speed of the electric oil pump detected during operation of the electric oil pump, and adjusts a control parameter of feedback control related to the motor current value or the motor rotation speed based on the estimated oil temperature.2. The electric oil pump device according to claim 1 , wherein the controller determines an excessive or deficient state of at least one of the hydraulic pressure or the oil discharge amount of the electric oil pump based on the estimated oil temperature claim 1 , and adjusts the control parameter of the feedback control related to the motor current value or the motor rotation speed so as to avoid the excessive or deficient state.3. The electric oil pump device according to claim 2 , whereinthe excessive and deficient states include the deficient state of at least one of the hydraulic pressure or the oil discharge amount of the electric oil pump in a case in which the estimated oil temperature is less than a first threshold and the excessive state of at least one of the hydraulic pressure or the oil discharge amount of the electric oil pump in a case in which the estimated oil temperature is greater than a second threshold, ...

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Номер записи: 94
23-09-2021 дата публикации

Self-Regulating Open Circuit Pump Unit

Номер: US20210293242A1
Автор: Peter Thomsen
Принадлежит: SA Armstrong Ltd

A self-regulating fire pump unit which can be controlled to operate under required conditions for sourcing a fire protection system such as sprinklers. The fire pump unit can be operated in accordance with a control curve based on detected pressure and flow. The control curve can include: a) a first setpoint of rated total value of the system load for the pressure and the flow, b) a second setpoint of a minimum partial percentage of the rated total value of the pressure at an over-percentage of the rated total value of the flow, c) a path which maintains the rated total value of the pressure for all values of the flow up to the first setpoint, d) a path between the first setpoint and the second setpoint, e) a path from the second setpoint which limits values of the pressure for values of the flow greater than the second setpoint.

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Номер записи: 95
17-09-2015 дата публикации

Electric pump

Номер: US20150263653A1
Автор: Yoshihiko Minato
Принадлежит: Aisin Seiki Co Ltd

An electric pump includes a pump body, a sensorless brushless motor, and a control portion controlling the motor to perform a constant current control and a constant voltage control to discharge a necessary discharge amount of an operation fluid from the pump body, the control portion controlling the motor to switch from the constant current control to the constant voltage control at a predetermined temperature of the operation fluid and at a predetermined motor applied voltage. The control portion controls the motor to switch from the constant current control to the constant voltage control at a motor applied voltage which is higher than the predetermined motor applied voltage when a temperature of the operation fluid is lower than the predetermined temperature to discharge the necessary discharge amount of the operation fluid from the pump body.

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Номер записи: 96
07-09-2017 дата публикации

Method for braking a compressor, compressor of a refrigeration appliance, an air conditioning appliance or a heat pump, and refrigeration appliance, air conditioning appliance or heat pump having the compressor

Номер: US20170254575A1
Автор: Achim Paulduro, Tommy Beckmann
Принадлежит: BSH HAUSGERAETE GMBH

A method is provided for braking a compressor of a refrigeration appliance, of an air conditioning appliance or of a heat pump in which the compressor has a brushless motor with windings and a controller for braking the motor. The controller is configured to brake the brushless motor by using a braking current in a controlled manner starting from an operating rotational speed, in which the braking current during the controlled braking is dependent on induced voltages determined before the controlled braking. The method for braking includes rotating the motor at an operating rotational speed, receiving a signal for decelerating, braking or slowing down, determining voltages induced in the windings and supplying a braking current having a decreasing frequency to the windings, in which the braking current during the braking is dependent on the previously determined induced voltages. A compressor and a refrigeration appliance having the compressor are also provided.

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Номер записи: 97
30-09-2021 дата публикации

Control Method of Compressor and Refrigerant Circulation System

Номер: US20210301812A1
Автор: Wenbin Liu, Xiaolin He, Xiaona Zheng, Yang Li
Принадлежит: Gree Electric Appliances Inc of Zhuhai

The present disclosure provides a control method of a compressor and a refrigerant circulation system. The control method includes deciding whether a current working volume state of the compressor is matched with a control instruction after the compressor completes a change to a working volume according to the control instruction, determining that the compressor operates normally in a case where the current working volume state of the compressor is matched with the control instruction, and determining that the compressor operates in fault in a case where the current working volume state of the compressor is not matched with the control instruction.

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Номер записи: 98
15-08-2019 дата публикации

MOTOR DRIVE SYSTEM AND METHOD

Номер: US20190249650A1
Автор: Coney Jason L., Evans Jared E., van der Merwe Lyon
Принадлежит: Franklin Electric Co., Inc.

A water pumping system, a motor drive, and a method of starting pumping by the motor drive. The method includes powering the electric motor with a motor drive; driving a progressive cavity pump with the electric motor; monitoring a speed difference between an electrical speed and an observed speed of a rotor of the electric motor; and performing a protective action as a function of the speed difference. 1. A method of operating an electric motor , the method comprising:powering the electric motor with a motor drive;driving a progressive cavity pump with the electric motor;monitoring a speed difference between an electrical speed and an observed speed of a rotor of the electric motor; andperforming a protective action as a function of the speed difference.2. The method of claim 1 , wherein performing a protective action as a function of the speed difference comprises performing the protective action responsive to the speed difference reaching or exceeding a maximum speed difference.3. The method of claim 1 , wherein the motor drive generates a motor voltage having a variable frequency claim 1 , and wherein the electrical speed corresponds to the variable frequency.4. The method of claim 2 , wherein the motor drive comprises closed loop observer logic configured to determine the observed speed.5. The method of claim 3 , wherein the closed loop observer logic determines the observed speed responsive to disturbances in a feedback current corresponding to a current drawn by the electrical motor.6. The method of claim 1 , wherein performing a protective action as a function of the speed difference comprises performing the protective action responsive to the speed difference remaining below a speed difference corresponding to a minimum power boundary as a function of the observed speed claim 1 , for a first time period.7. The method of claim 6 , wherein between a minimum speed boundary and a maximum speed boundary the minimum power boundary decreases as the observed speed ...

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Номер записи: 99
06-08-2020 дата публикации

Electric compressor

Номер: US20200248681A1
Автор: Koji Sakai
Принадлежит: Denso Corp

An inverter is disposed at a position on the upstream side relative to a compression mechanism along the flow of a refrigerant and the position cooled by the refrigerant. A motor is disposed at a position heated by the refrigerant compressed by the compression mechanism. A control device changes an upper limit value of a driving current supplied to the motor on the basis of at least one of first information relating to the temperature of the motor or second information relating to the temperature of the inverter.

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Номер записи: 100