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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 3720. 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
26-01-2012 дата публикации

Product delivery and monitoring system

Номер: US20120018448A1
Автор: James Unwin, Richard J. Mehus, Robert D. Grapes
Принадлежит: ECOLAB USA INC

A product delivery and monitoring system is provided. The system includes at least one air pump, an air pump sensor for each air pump, at least one diaphragm pump, a diaphragm pump sensor for each diaphragm pump, a controller and an indication system. Each air pump sensor is configured and arranged to monitor the operation of the air pump. The at least one diaphragm pump is configured and arranged to deliver a product in response to the operation of an associated air pump. Each diaphragm pump sensor is configured and arranged to monitor the delivery of the product by the diaphragm pump. The controller is in communication with each air pump sensor and each diaphragm pump sensor. The controller is configured to generate at least one control signal based on a comparison of communications from an air pump sensor and an associated diaphragm sensor. The controller is configured to manipulate the indication system with the at least one control signal.

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Номер записи: 3
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: 4
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: 5
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: 6
03-01-2013 дата публикации

Linear compressor

Номер: US20130004335A1
Автор: Hoon Bong Lee, Jin Seok Hu, Kye Lyong Kang, Shin Hyun Park, Yong Tae Kim
Принадлежит: LG ELECTRONICS INC

The present invention relates to a linear compressor which can perform the natural cooling capacity modulation, even if a capacitor connected to a motor is removed. The linear compressor includes a fixed member having a compression space therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant sucked into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, a motor connected to the movable member to linearly reciprocate the movable member in the axial direction, and a motor control unit performing the cooling capacity modulation by the reciprocation of the movable member according to a load, by controlling an AC voltage applied to the motor so that a stroke of the movable member can be proportional to the magnitude of the AC voltage applied to the motor.

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Номер записи: 7
03-01-2013 дата публикации

System and method for driving a pump

Номер: US20130004337A1
Автор: Kevin D. ANDERSON
Принадлежит: Solar Turbines Inc

A system for driving a pump includes a gas turbine engine having an output shaft, and a torque converter including an input shaft coupled to the output shaft of the gas turbine engine and an output shaft configured to be coupled to an input shaft of a pump. The system further includes a controller coupled to the torque converter, wherein the controller is configured to receive a signal indicative of a pressure at at least one of a pump inlet and a pump outlet, and control a speed of the output shaft of the torque converter based on the signal indicative of pressure.

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Номер записи: 8
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: 9
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: 10
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: 11
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: 12
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: 13
25-07-2013 дата публикации

System for controlling a resonant linear compressor piston, method for controlling a resonant linear compressor piston, and resonant linear compressor

Номер: US20130189119A1
Автор: Ademir Nied, Jose De Oliveira, Paulo Sérgio DAINEZ
Принадлежит: Whirlpool SA

A system and a control method for the piston of a resonant linear compressor ( 100 ), especially designed for operating at their maximum efficiency, such a system being capable of actuating said compressor without the use of sensors for measuring mechanical magnitudes or variables. A method of controlling the piston of a resonant linear compressor, the steps of which enable one to estimate the velocity and the displacement of said piston, in order to control the compressor motor efficiently. A resonant linear compressor ( 100 ) provided with a control system as proposed.

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Номер записи: 14
01-08-2013 дата публикации

Apparatus and method for controlling a compressor

Номер: US20130195613A1
Автор: Boram LEE, Gyunam Kim, Jaeyoo YOO
Принадлежит: LG ELECTRONICS INC

An apparatus and method for controlling a compressor are provided. An input voltage of a commercial power source, a motor voltage of a compressor motor, and a motor current of the compressor motor are detected, based on which voltage values of a capacitor and voltage values of a triac may be calculated. Thus, an additional operational amplifier or a sensor to measure a capacitor voltage is not required, reducing costs.

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Номер записи: 15
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: 16
10-10-2013 дата публикации

Air Compressor With Shut-Off Mechanism

Номер: US20130266455A1
Автор: Lumin Li, Sean D. Hill
Принадлежит: BLACK & DECKER INC.

A compressor system is disclosed, comprising a first pump driven by a D/C motor, a second pump driven by an A/C motor, and a switch which allows a user to manually selectively engage of one of the D/C motor or A/C motor, including a gauge having a user settable shut-off mechanism which interrupts power to at least one of D/C or A/C motors. Also disclosed is a gauge configured to display system pressure independent of the user settable shut-off mechanism. A gauge having a rotatable bezel with a needle stop comprising a first needle rotatably coupled to a gauge shaft, and a second needle fixable coupled to the gauge shaft, and a spring disposed between the first and second needles, the spring configured to bias the first needle into the second needle so changes in pressure causes rotation of both is also disclosed.

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Номер записи: 17
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: 18
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: 19
05-01-2017 дата публикации

ACOUSTIC-RESONANCE FLUID PUMP

Номер: US20170002839A1
Автор: BUKLAND Justin Rorke, HATFIELD Stuart Andrew, Pooley David Martin, WEICHERT Stephanie April
Принадлежит:

A fluid pump comprising: a pump body having upper and lower parts, each comprising a substantially cylindrical side wall closed at one end by a substantially circular end wall and partially closed at the opposite end by an actuator disposed in a plane substantially parallel to and between the end walls, thereby forming a single cavity having upper and lower portions which encloses the actuator and is bounded by the end walls and side walls of the pump body and the surfaces of the actuator; a substantially open actuator support structure connecting the actuator to the pump body and enabling free flow of fluid between the upper and lower cavity portions; at least two apertures through the pump body walls, at least one of which is a valved aperture; wherein all apertures located substantially at the centres of the end walls are valved apertures; wherein, in use, the actuator oscillates in a direction substantially perpendicular to the plane of the end walls causing an acoustic wrapped standing wave to exist in the cavity and thereby causing fluid flow through said apertures. 1) A fluid pump comprising:a pump body having upper and lower parts, each comprising a substantially cylindrical side wall closed at one end by a substantially circular end wall and partially closed at the opposite end by an actuator disposed in a plane substantially parallel to and between the end walls, thereby forming a single cavity having upper and lower portions which encloses the actuator and is bounded by the end walls and side walls of the pump body and the surfaces of the actuator;a substantially open actuator support structure connecting the actuator to the pump body and enabling free flow of fluid between the upper and lower cavity portions;at least two apertures through the pump body walls, at least one of which is a valved aperture;wherein all apertures located substantially at the centres of the end walls are valved apertures; wherein, in use, the actuator oscillates in a direction ...

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Номер записи: 20
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: 21
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: 22
03-01-2019 дата публикации

SYSTEMS AND METHODS FOR CONTROLLING MULTI-CHAMBER SUBSEA PUMPS

Номер: US20190003473A1
Автор: Gerdes Michael B., Rahman Sharifur, Straub Dale Garth, TANJU Baha T.
Принадлежит:

Methods and systems for controlling the timing of a fluid driven positive displacement pump (FDPDP) are disclosed using pump inlet pressure, flow rate and time domain control. Pressure is thus controlled at various flow rates of fluids to be pumped in subsea environments. The FDPDP includes a plurality of pressure vessels connected by piping, each vessel having two chambers. One chamber is connected to a source of fluid to be pumped and the other chamber is connected to a source of driving fluid. The methods synchronize pumping chambers that have no mechanical means to control timing between each pumping chamber. The control methods described utilize algorithms which receive feedback from the pumping system to control the pumping sequence and adapt to any parameter changes to maintain a constant range of desired pressure. 1. A method for controlling a subsea fluid driven positive displacement pump in a subsea pumping operation by regulating a pump inlet pressure or a pump inlet flow rate , the method comprising: i. a plurality of pressure vessels connected in parallel wherein each pressure vessel has a first and a second chamber separated by a diaphragm or a piston therein and wherein the first chamber of each pressure vessel is connected to a source of fluid to be pumped from a first location to a second location;', 'ii. a pump inlet conduit connecting the first chamber of each of the pressure vessels to the source of fluid to be pumped;', 'iii. a first and a second valve for controlling flow of the fluid to be pumped into and out of the first chamber of each pressure vessel, respectively, wherein the first valve is located in the pump inlet conduit between the first chamber and the source of fluid and the second valve is located in a conduit between the first chamber and the second location;', 'iv. a third and a fourth valve for controlling flow of a driving fluid into and out of the second chamber of each pressure vessel, respectively, wherein the third valve is ...

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Номер записи: 23
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: 24
12-01-2017 дата публикации

DOUBLE DIAPHRAGM PUMP

Номер: US20170009760A1
Автор: BASSO Angelo, JUTERBOCK Karsten, KLUSER Thomas, LUTZ Gilbert
Принадлежит:

A first diaphragm which forms a wall of a first pump chamber is provided in the double diaphragm pump according to the invention, wherein the first diaphragm can be moved by means of a first driving means. In addition, a second diaphragm which forms a wall of a second pump chamber is provided, wherein the second diaphragm can be moved by means of a second driving means. What is more, a control for the driving means is provided, said control being designed and operable such that it controls the two driving means subject to one or a plurality of conditions. 1. A double diaphragm pump ,wherein a first diaphragm which forms a wall of a first pump chamber is provided,wherein the first diaphragm can be moved by means of a first mechanical driving means,wherein a second diaphragm which forms a wall of a second pump chamber is provided,wherein the second diaphragm can be moved by means of a second mechanical driving means which is independent of the first driving means,wherein a control is provided for the driving means, said control being designed and operable such that it controls the two driving means subject to one or a plurality of conditions.2. The double diaphragm pump according to claim 1 , wherein the condition relates to time claim 1 , pressure claim 1 , distance and/or position.3. The double diaphragm pump according to claim 1 , wherein the control is designed and operable such that claim 1 , before the diaphragm in one pump chamber has reached its dead center claim 1 , it already ensures that pressure is built up in the other pump chamber.4. The double diaphragm pump according to claim 1 , wherein the control is designed and operable such that claim 1 , if the low pressure in one pump chamber drops below a specific threshold value claim 1 , it ensures that pressure is built up in this pump chamber.5. The double diaphragm pump according to claim 1 , wherein the control is designed and operable such that it controls the two driving means at different times in ...

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Номер записи: 25
12-01-2017 дата публикации

AUTOMATED CROSS-PHASE PUMP AND CONTROLLER

Номер: US20170009763A1
Автор: Davis Kelly E., Gehrke Cody Lee, Shorr Cory Dennis
Принадлежит:

In one example, a fluid system is provided that includes an air-operated fluid pump, a control air system operably connected with the fluid pump, and a pump controller operably connected with one or more components of the control air system. The pump controller is configured to automatically control the operation of the air-operated fluid pump by way of the control air system. The fluid pump parameters automatically controlled by the pump controller can include a discharge flow rate of the fluid pump, a discharge pressure of the fluid pump, and/or a pulsation value associated with the discharge of the fluid pump. 1. A fluid system , comprising:an air-operated fluid pump;a control air system operably connected with the fluid pump; anda pump controller operably connected with one or more components of the control air system, wherein the pump controller is configured to automatically control the operation of the air-operated fluid pump by way of the control air system, and wherein air-operated fluid pump parameters automatically controlled by the pump controller include a discharge flow rate of the fluid pump, and a pulsation value associated with the discharge of the air-operated fluid pump.2. The fluid system as recited in claim 1 , wherein the air-operated fluid pump is a diaphragm pump.3. The fluid system as recited in claim 1 , wherein the pump controller is operable to automatically control any combination of the following parameters of the control air system: supply pressure; vacuum pressure; cycle time; phase overlap; and claim 1 , air supply orifice size.4. The fluid system as recited in claim 1 , further comprising a differential pressure measurement device configured and arranged to receive part of the discharge of the air-operated fluid pump claim 1 , and the differential pressure measurement device is operable to transmit a signal to the pump controller.5. The fluid system as recited in claim 1 , wherein the pump controller claim 1 , control air system ...

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Номер записи: 26
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: 27
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: 28
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: 29
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: 30
21-01-2021 дата публикации

SYSTEMS AND METHODS FOR PISTON ROD MONITORING

Номер: US20210017979A1
Автор: Aimi Marco Francesco, Iannotti Joseph Alfred, Kapusta Christopher James
Принадлежит:

A sensor system for monitoring a condition of a piston rod includes an interrogator system having a first coil winding coupled to a housing and radially spaced from the piston rod such that a gap is defined between the first coil winding and the piston rod. A second coil winding is coupled to the piston rod and is inductively coupled to the first coil winding. The second coil winding is configured to communicate with the first coil winding through a range of linear movement of the piston rod relative to the housing. A sensor is coupled to the second coil winding. The sensor is configured to measure a characteristic associated with the piston rod and generate a current in the second coil winding to transmit, via the inductive coupling with the first coil winding, an electrical output signal associated with the characteristic to the interrogator system. 1. A sensor system for monitoring a condition of a piston rod positioned within a housing , said sensor system comprising:an interrogator system comprising a first coil winding coupled to the housing and radially spaced from the piston rod such that a gap is defined between said first coil winding and the piston rod;a second coil winding coupled to the piston rod, wherein said second coil winding is inductively coupled to said first coil winding and configured to communicate with said first coil winding through a range of linear movement of the piston rod relative to the housing; anda sensor coupled to said second coil winding, said sensor configured to measure a characteristic associated with said piston rod and generate a current in said second coil winding to transmit, via the inductive coupling with said first coil winding, an electrical output signal associated with the characteristic to said interrogator system.2. The sensor system in accordance with claim 1 , wherein said first coil winding and said second coil winding are inductively coupled through the piston rod.3. The sensor system in accordance with claim 2 ...

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Номер записи: 31
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: 32
16-01-2020 дата публикации

ACTUATOR SUPPORT STRUCTURE AND PUMP DEVICE

Номер: US20200018303A1
Автор: HIRATA Atsuhiko, KODAMA Yukiharu, OMORI Kenta
Принадлежит:

A piezoelectric pump includes a leaf spring including a disc portion defining an actuator, an outer frame portion defining a housing, and an elastic support portion. The actuator flexurally vibrates from a center portion of a principal surface thereof to an outer periphery thereof. The elastic support portion includes a beam portion and connection portions and elastically supports the disc portion on the outer frame portion. The beam portion extends in a gap between the disc portion and the outer frame portion in a direction along an outer periphery of the disc portion. A first of the connection portions connects the beam portion to the disc portion. Second and third connection portions are offset from the first connection portion and connect the beam portion to the outer frame portion. 1. (canceled)3. The actuator structure according to claim 2 , wherein the beam portion has a substantially straight shape.4. The actuator structure according to claim 2 , wherein the beam portion has an arc shape or substantially arc shape.5. The actuator structure according to claim 2 , wherein claim 2 , in each of the plurality of elastic support portions claim 2 , the side wall connection portion is connected to an end of the beam portion.6. The actuator structure according to claim 2 , whereineach of the plurality of elastic support portions includes two of the side wall connection portions; andin each of the plurality of elastic support portions, the actuator connection portion is located between the two side wall connection portions.7. The actuator structure according to claim 2 , wherein the beam portion is configured such that a beam portion length is provided without folding the beam portion.8. The actuator structure according to claim 2 , wherein the actuator has a disc shape.10. The pump device according to claim 9 , wherein the beam portion has a substantially straight shape.11. The pump device according to claim 9 , wherein the beam portion has an arc shape or ...

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Номер записи: 33
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: 34
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: 35
16-01-2020 дата публикации

METHOD FOR CONTROLLING LINEAR COMPRESSOR AND REFRIGERATOR

Номер: US20200018533A1
Автор: KIM Hyun, Lee Sungwoo
Принадлежит:

A method for controlling a linear compressor and a method for controlling a refrigerator are provided. The method for controlling a linear compressor may include measuring an ambient temperature, and when the measured ambient temperature is equal to or lower than a predetermined safety temperature, applying a safety current to a motor assembly for driving a piston. On the other hand, when the measured ambient temperature is higher than the predetermined safety temperature, a current lower than the safety current may be applied to the motor assembly. 1. A method for controlling a linear compressor including a piston and a bearing flow path configured to supply bearing refrigerant to the piston , the method comprising:measuring an ambient temperature;when the measured ambient temperature is equal to or lower than a predetermined safety temperature, applying a safety current to a motor assembly for driving the piston; andwhen the measured ambient temperature is higher than the predetermined safety temperature, applying a current lower than the safety current to the motor assembly.2. The method of claim 1 , further comprising:turning on the linear compressor; andwhen the measured ambient temperature is higher than the predetermined safety temperature, applying a drive current greater than a minimum applied current and smaller than a maximum applied current to the motor assembly, wherein the maximum applied current is smaller than the safety current.3. The method of claim 2 , further comprising:after applying the drive current to the motor assembly, again measuring the ambient temperature;when the measured ambient temperature is equal to or lower than the predetermined safety temperature, applying the safety current to the motor assembly; andwhen the measured ambient temperature is higher than the predetermined safety temperature, continuously applying the drive current to the motor assembly.4. The method of claim 3 , further comprising:after applying the safety current ...

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Номер записи: 36
26-01-2017 дата публикации

AIR OPERATED PUMP

Номер: US20170022983A1
Автор: GLAUBER CARL
Принадлежит: WILDEN PUMP AND ENGINEERING LLC

An air-driven pump includes a source of compressed air, a vacuum source including a venturi and two pump units with structurally independent pumping elements dividing pump chambers from air chambers. A directional control valve is in communication with the source of compressed air, the vacuum source, the pump unit air chambers. The directional control valve includes two valve positions alternating communication of the source of compressed air and the vacuum source with the air chambers. A pilot valve system shifts the directional control valve between the two valve positions at end of stroke positions of the pump and includes actuators extending into the air chambers to engage the pumping elements with the air chambers contracted. 1. An air-driven pump comprising:a source of compressed air;a vacuum source;a first pump unit including a first pump chamber, a first air chamber and a first pumping member between the first pump chamber and the first air chamber;a second pump unit including a second pump chamber, a second air chamber and a second pumping member between the second pump chamber and the second air chamber, movement of the first pumping member being structurally independent of movement of the second pumping member;a directional control valve in communication with the source of compressed air, the vacuum source, the first air chamber and the second air chamber, the directional control valve including a first valve position with communication between the source of compressed air and the first air chamber and with communication between the vacuum source and the second air chamber and a second valve position with communication between the source of compressed air and the second air chamber and with communication between the vacuum source and the first air chamber.2. The air driven pump of further comprisinga pilot valve system shifting the directional control valve between the first and second valve positions, the first pump unit further including a first end of ...

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Номер записи: 37
25-01-2018 дата публикации

GASEOUS FLUID PUMP

Номер: US20180023551A1
Автор: Jagger Theodore W., Kivisto John A., Van Brunt Nicholas P.
Принадлежит:

A gaseous fluid pump includes a compression chamber, a plurality of pistons, a plurality of electric coils, and a magnet. The chamber contains at least one inlet and one outlet and a plurality of open volumes created by an inner surface of the compression chamber. The plurality of pistons are within the compression chamber and each piston containing a body with at least a first diametrically polarized magnet centered in the body such that the first magnet attracts or repels depending on the relative position of the first magnet. The plurality of electric coils wound around laminations on an outside of the compression chamber with each of the plurality of electric coils configured to create flux paths centered around each of the pistons when provided electricity to act as a polarizing motor stator. A second magnet is centered within the compression chamber between two of the plurality of pistons. 1. An apparatus for pumping and compressing fluids comprising:a compression chamber, the chamber containing at least one inlet and one outlet, and a plurality of open volumes created by an inner surface of the compression chamber;a plurality of pistons within the compression chamber, each piston containing a body with at least a first diametrically polarized magnet centered in the body, such that the first magnet attracts or repels depending on the relative position of the first magnet;a plurality of electric coils wound around laminations on an outside of the compression chamber, each of the plurality of electric coils configured to create flux paths centered around each of the pistons when provided electricity to act as a polarizing motor stator; anda second magnet centered within the compression chamber between two of the plurality of pistons.2. The apparatus of wherein the compression chamber is made of glass.3. The apparatus of wherein each piston body is comprised of graphite.4. The apparatus of wherein the compression chamber contains a third magnet on a first end of ...

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Номер записи: 38
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: 39
23-01-2020 дата публикации

LINEAR COMPRESSOR

Номер: US20200025187A1
Автор: PARK Sanga, YU Hyosang
Принадлежит:

The present invention relates to a linear compressor. The linear compressor according to an aspect of the present invention includes a spring axially elastically supporting a driving assembly. The spring includes a spring body axially extending, a front spring link forming an end of the spring body by extending from a side of the spring body, and a rear spring link forming the other end of the spring body by extending from the other side of the spring body. Any one of the front spring link and the rear spring link is fixed to the driving assembly and the other one is fixed to a supporting assembly. 1. A linear compressor comprising:a shell that defines an external shape of the linear compressor;a driving assembly located in the shell and configured to reciprocate relative to the shell in an axial direction of the driving assembly;a supporting assembly configured to support the driving assembly in the shell;a suction pipe located at the shell and configured to supply refrigerant into the shell in the axial direction; anda spring coupled to the driving assembly and to the supporting assembly, the spring being configured to elastically support the driving assembly in the axial direction, a spring body that is configured to extend in the axial direction,', 'a front spring link that extends from a first side of the spring body and that defines a first end of the spring body, and', 'a rear spring link that extends from a second side of the spring body and that defines a second end of the spring body, and, 'wherein the spring includeswherein one of the front spring link or the rear spring link is configured to fix to the driving assembly, and the other of the front spring link or the rear spring link is configured to fix to the supporting assembly.2. The linear compressor of claim 1 , wherein the driving assembly includes a piston configured to reciprocate along a spring central axis that extends in the axial direction claim 1 , andwherein the spring body extends in a ...

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Номер записи: 40
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: 41
28-01-2021 дата публикации

WELLSITE ELECTRICAL POWER MANAGEMENT SYSTEM

Номер: US20210025382A1
Автор: Harvell Chris, Payne Mark, Smith Paul
Принадлежит:

A method includes supplying a plurality of generators, each generator in electrical communication with a switchgear with each switchgear in data communication with a generator data management system. The method also includes supplying a plurality of electrically driven fracturing pumps with each electrically driven fracturing pump in data communication with pump data management system. Further, the method includes supplying a load shedding system, the load shedding system in data communication with the generator data management system and a pump control system, the pump control system in data communication with the pump data management system. The method includes determining which pumps should have speed reduced by the load shedding system and reducing the speed of the pumps determined by the load shedding system using the pump control system. 1. A method comprising: a plurality of generators, each generator in electrical communication with a switchgear, each switchgear in data communication with a generator data management system;', 'a plurality of electrically driven fracturing pumps, each electrically driven fracturing pump in data communication with pump data management system;', 'a load shedding system, the load shedding system in data communication with the generator data management system; and', 'a pump control system, the pump control system in data communication with the pump data management system;, 'supplyingdetermining which pumps should have speed reduced by the load shedding system; andreducing the speed of the pumps determined by the load shedding system using the pump control system.2. The method of further comprising supplying a communications hub claim 1 , the communications hub in data communication with the load shedding system and the pump control system.3. The method of claim 2 , wherein the load shedding system claim 2 , the pump control system claim 2 , and the communication hub are located in a data van.4. The method of further comprising ...

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Номер записи: 42
01-02-2018 дата публикации

Hybrid Cargo Handling Method of Oil Tanker and Cargo Pump Prime Mover System for the Method

Номер: US20180029673A1
Автор: Nobuyoshi Morimoto
Принадлежит: Individual

Oil tanker and or ore/oil carrier can take more good fuel oil consumption through cargo oil handling by usage of electric motor driven system instead of steam turbine driven cargo pump system. Its merit is about 20%.

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Номер записи: 43
28-01-2021 дата публикации

METHOD FOR CONTROLLING MOTOR-DRIVEN PUMP IN A FLUID SYSTEM

Номер: US20210028738A1
Автор: Luh Chuh Hwa
Принадлежит:

A method for controlling a motor-driven pump in communication with a fluid system is provided. Preferably the method employs a frequency drive system to control the motor-driven pump. The control method is characterized in that the operating frequency of the motor can be adjusted very quickly and it is ensured to be operated in a safe frequency range no more than a rated current. 1. A method for controlling a pump in a fluid system , wherein the pump discharges a fluid through one of a plurality of outlets having different diameters and is driven by a motor , and the method comprises the steps of:obtaining a current flow rate of the discharged fluid according to a monitoring frequency of the motor;obtaining an outlet equivalent diameter according to a current pressure of the discharged fluid and the current flow rate;obtaining a target flow rate according to the outlet equivalent diameter and a target pressure of the discharged fluid;obtaining a target frequency according to the target flow rate; andadjusting a frequency of the motor to the target frequency.2. The method as recited in claim 1 , further comprising:determining a maximum operating frequency and a minimum operating frequency of the motor based on a diameter of the outlet that is selected to discharge the fluid; anddetermining whether the target frequency is between the maximum operating frequency and the minimum operating frequency.3. The method as recited in claim 2 , wherein the maximum operating frequency and the minimum operating frequency are determined by the steps of:dynamically obtaining at least three data sets of operating frequency and operating current of the motor;determining a polynomial based on the at least three data sets of operating frequency and operating current of the motor;obtaining a rated current of the motor;intersecting the polynomial with the rated current to determine the maximum operating frequency and the minimum operating frequency.4. The method as recited in claim 3 , ...

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Номер записи: 44
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: 45
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: 46
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: 47
31-01-2019 дата публикации

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

Номер: US20190032652A1
Автор: McCarthy Dan
Принадлежит:

Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature. 1. A control system for adaptively controlling a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor , the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes , the system comprising:{'b': 1', '2', '1', '2, 'first and second proximity sensors positioned and configured to respectively generate a first signal indicative of a first time (T) when a first part of the piston is in proximity of the first proximity sensor, and a second signal indicative of a second time (T) when a second part of the piston is in a proximity of the second proximity sensor, whereby a speed of the piston during a first stroke of the piston is calculable based on T, T and a distance between the first and second proximity sensors;'}one or more pressure sensors positioned and configured to generate a signal indicative of a load pressure applied on the piston;a temperature sensor positioned and configured to generate a signal indicative of a temperature of the driving fluid; anda controller configured to receive signals from said sensors and for controlling the hydraulic fluid supply to control reversal of the driving force based on the speed of the piston, the temperature of the driving fluid, and the load pressure applied to the piston during the first stroke.22. The system of claim 1 , ...

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Номер записи: 48
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: 49
09-02-2017 дата публикации

ACTUATOR SUPPORT STRUCTURE AND PUMP DEVICE

Номер: US20170037838A1
Автор: HIRATA Atsuhiko, KODAMA Yukiharu, OMORI Kenta
Принадлежит:

A piezoelectric pump includes a leaf spring including a disc portion defining an actuator, an outer frame portion defining a housing, and an elastic support portion. The actuator flexurally vibrates from a center portion of a principal surface thereof to an outer periphery thereof. The elastic support portion includes a beam portion and connection portions and elastically supports the disc portion on the outer frame portion. The beam portion extends in a gap between the disc portion and the outer frame portion in a direction along an outer periphery of the disc portion. A first of the connection portions connects the beam portion to the disc portion. Second and third connection portions are offset from the first connection portion and connect the beam portion to the outer frame portion. 1. (canceled)2. An actuator support structure comprising:a plate-shaped actuator arranged to flexurally vibrate from a center portion of a principal surface thereof to an outer peripheral portion thereof;a side wall surrounding an outer periphery of the actuator; anda plurality of elastic support portions elastically supporting the outer periphery of the actuator to the side wall, the plurality of elastic support portions being separately provided and spaced apart from one another around the outer periphery of the actuator; wherein a beam portion extending in a gap between the actuator and the side wall in a circumferential direction along the outer periphery of the actuator;', 'an actuator connection portion connecting the beam portion to the actuator; and', 'a side wall connection portion connecting the beam portion to the side wall provided in a position offset from the actuator connection portion in the direction along the outer periphery of the actuator; and, 'each of the plurality of elastic support portions includesthe side wall connection portions extend outward in a radial direction from the beam portion towards the side wall and are directly connected to the side wall.3. ...

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Номер записи: 50
09-02-2017 дата публикации

DIAPHRAGM PUMP WITH REDUCED LEAK EXTENSION IN THE EVENT OF OVERLOAD

Номер: US20170037840A1
Автор: ARNOLD Christian, ELGETZ Roland, Reinhard Martin
Принадлежит:

The present invention concerns a diaphragm pump comprising a delivery chamber separated from a hydraulic chamber by way of a diaphragm, wherein the delivery chamber is respectively connected to a suction connection and a pressure connection and the hydraulic chamber which can be filled with a working fluid can be acted upon with a pulsating working fluid pressure and the diaphragm can be reciprocated between a pressure position in which the volume of the delivery chamber is smaller and a suction position in which the volume of the delivery chamber is larger. In that arrangement the hydraulic chamber is connected to a working fluid supply by way of a leak replenishment valve, wherein the leak replenishment valve is so designed that when the pressure in the hydraulic chamber in the suction position of the diaphragm is less than a predetermined minimum value pthe leak replenishment valve opens and the hydraulic chamber has an outlet passage which is closed by a pressure limiting valve which is so designed that if the pressure in the hydraulic chamber rises above a predetermined maximum value pthe pressure limiting valve opens and working fluid can leave the hydraulic chamber by way of the outlet valve. To provide a corresponding diaphragm pump which automatically reduces the metering power in the overpressure situation without the use of additional sensors being necessary it is proposed according to the invention that the working fluid supply is arranged in a first and in a second chamber, the two chambers being connected together by way of a first connecting passage. 1. A diaphragm pump comprising a delivery chamber separated from a hydraulic chamber by way of a diaphragm , wherein the delivery chamber is respectively connected to a suction connection and a pressure connection and the hydraulic chamber which can be filled with a working fluid can be acted upon with a pulsating working fluid pressure and the diaphragm can be reciprocated between a pressure position in ...

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Номер записи: 51
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: 52
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: 53
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: 54
16-02-2017 дата публикации

Electronic vaporiser system

Номер: US20170042239A1
Автор: Dmitry Gorilovsky, Ian Murison
Принадлежит: Beyond Twenty Ltd

An electronic cigarette vaporiser includes a heating element for heating an e-liquid and a microcontroller; the microcontroller determines the type and/or characteristics of the e-liquid being used and uses that as an input to automatically control the power delivered to the heating element to heat the e-liquid in a manner suitable for that specific type of e-liquid, or e-liquid with those characteristics. The e-liquid can be supplied from a cartridge and that cartridge then includes a record of the type of e-liquid stored in the cartridge and/or its characteristics and the microcontroller reads that record or is provided data from that record. A variable for the type of e-liquid and/or its characteristics is the water content of the e-liquid.

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Номер записи: 55
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: 56
16-02-2017 дата публикации

PUMP CHAMBER POSITION INDICATOR

Номер: US20170045044A1
Автор: Denk Michael John, Duman Ahmet, Nguyen Dat Manh
Принадлежит:

A pump with a position indicator is disclosed. The pump includes a pump housing, wherein the pump housing includes a flexible bladder disposed therein; a first fluid zone, wherein the first fluid zone is operable to allow flow of a first fluid into and out of the first fluid zone; and a second fluid zone, wherein the second fluid zone is operable to allow flow of a second fluid into and out of the second fluid zone. The pump further includes a flexible position indicator disposed in the first fluid zone and in communication with the flexible bladder, wherein the flexible position indicator is operable to detect a linear position of the flexible bladder, and wherein the flexible bladder fluidly isolates the first fluid zone from the second fluid zone. 1. A pump with a position indicator , the pump comprising:a pump housing, wherein the pump housing includes a flexible bladder disposed therein;a first fluid zone, wherein the first fluid zone is operable to allow flow of a first fluid into and out of the first fluid zone;a second fluid zone, wherein the second fluid zone is operable to allow flow of a second fluid into and out of the second fluid zone; anda flexible position indicator disposed in the first fluid zone and in communication with the flexible bladder, wherein the flexible position indicator is operable to detect a linear position of the flexible bladder, and wherein the flexible bladder fluidly isolates the first fluid zone from the second fluid zone.2. The pump according to claim 1 , wherein the flexible position indicator comprises a transducer cable.3. The pump according to claim 2 , wherein the flexible bladder is operable to move toward the second fluid zone when the first fluid flows into the first fluid zone claim 2 , wherein the flexible bladder is operable to move toward the first fluid zone when the second fluid flows into the second fluid zone claim 2 , and wherein the flexible position indicator is attached to the flexible bladder and is ...

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Номер записи: 57
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: 58
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: 59
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: 60
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: 61
16-02-2017 дата публикации

Conduction noise filtering circuit, inverting device, and compressor

Номер: US20170047881A1
Автор: Seisaku OOSAKO, Tatsuhisa Shimura, Yasuyuki Yamada
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A conduction noise filtering circuit configured to inhibit conduction noise is provided. The conduction noise filtering circuit includes a first coil part configured to be supplied with alternating current (AC) power, a second coil part configured to be connected to the first coil part in series, a detector configured to detect common mode noise from at least one selected from the first coil part and the second coil part, and a capacitor configured to supply a current offsetting common mode noise between power lines connecting the first coil part and the second coil part in series, based on an output signal of the

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Номер записи: 62
25-02-2016 дата публикации

Linear compressor, and apparatus and method for controlling a linear compressor

Номер: US20160053754A1
Автор: Jaeyoo YOO, Kyoungseok Kang
Принадлежит: LG ELECTRONICS INC

An apparatus and a method for controlling a linear compressor, and a linear compressor operable with high power and low noise are provided. The apparatus may include a reference operating frequency determiner that determines a reference operating frequency at which a linear motor is operated, and an actual operating frequency determiner that determines an actual operating frequency as an arbitrary value included in a predetermined numerical value range in a vertical direction around the reference operating frequency. A correction signal may be determined by the actual operating frequency.

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Номер записи: 63
22-02-2018 дата публикации

FREE PISTON LINEAR MOTOR COMPRESSOR AND ASSOCIATED SYSTEMS OF OPERATION

Номер: US20180051690A1
Автор: HEARN Clay, Lewis Michael, LINDSAY Anthony, LIU Hsing-Pang, PENNEY Charles, PRATAP Siddharth, STAIR Jason, WORTHINGTON Michael, ZOWARKA Raymond
Принадлежит:

A linear motor compressor including a compressor housing and a cylinder housing having a plurality of opposing compression chambers. A piston freely reciprocates within the cylinder housing using a linear electric motor. A piston position feedback control system provides adaptive current output as a function of position feedback and/or velocity feedback from the piston and/or the electric motor, to directly power and control the electric motor, wherein the piston reciprocates without assistance from a mechanical spring or other equivalent centering force. 1. A linear motor compressor comprising:a compressor housing;a cylinder housing having a plurality of opposing compression chambers;a piston freely reciprocating within the cylinder housing,a linear electric motor positioned to reciprocate the piston; anda piston position feedback control system configured to provide adaptive current output as a function of position feedback and/or velocity feedback from the piston and/or the electric motor, to directly power and control the electric motor.2. The linear motor compressor of wherein the control system determines motor force requirements from estimated position values and/or velocity values.3. The linear motor compressor of wherein the control system determines a current required to generate the motor force requirements as a function of the position feedback and/or the velocity feedback.4. The linear motor compressor of wherein the control system comprises a linear encoder feedback loop to track a position and/or a velocity of the electric motor or the piston.5. The linear motor compressor of wherein the control system comprises reference position values and/or velocity values for comparing to the position feedback and/or the velocity feedback to adjust current to the linear electric motor.6. The linear motor compressor of wherein the piston reciprocates without assistance from a mechanical spring or a centering force.7. The linear motor compressor of wherein the ...

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Номер записи: 64
02-03-2017 дата публикации

METHOD FOR OPERATING A REAGENT METERING SYSTEM, DEVICE FOR CARRYING OUT THE METHOD, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT

Номер: US20170058739A1
Автор: Burger Matthias
Принадлежит:

A method for operating a reagent metering system which meters a reagent into an exhaust duct of an internal combustion engine upstream of an SCR catalytic converter, in which, after the metering operation is ended, at least part of the reagent metering system is emptied by back-suction by means of a reciprocating pump. The procedure according to the invention is distinguished in that during the back-suction, a stop determination determines the flight time of a reciprocating piston of the reciprocating pump from a starting time as far as the stop time, in that a comparator compares the flight time determined with a flight time threshold value, and in that the activation power of the reciprocating pump is reduced if the flight time determined is less than the flight time threshold value. 11014161820. A method of operating a reagent metering system () which meters a reagent () into an exhaust duct () of an internal combustion engine () upstream of an SCR catalytic converter () , the method comprising:{'b': '10', 'emptying at least part of the reagent metering system () by back-suction by a reciprocating pump after the metering operation has ended;'}determining a flight time (TZ) of a reciprocating piston of a reciprocating pump from a starting time (TS) as far as a stop time (TA) during the back-suction;{'b': 50', '52, 'comparing the flight time (TZ), by a comparator (), with a flight time threshold value (); and'}{'b': 30', '52, 'reducing an activation power of the reciprocating pump () if the flight time (TZ) is less than the flight time threshold value ().'}2483030. The method according to claim 1 , characterized in that a stop determination () determines the stop time (TA) of the reciprocating piston of the reciprocating pump () on the basis of an assessment of the temporal characteristic of the current (i) flowing through the reciprocating pump ().330. The method according to claim 1 , characterized in that the average activation power of the reciprocating pump () ...

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Номер записи: 65
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: 66
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: 67
28-02-2019 дата публикации

Method for detecting head crashing in a linear compressor

Номер: US20190063424A1
Автор: Gregory William Hahn, Joseph W. Latham, Michael Lee Mcintyre, Srujan Kusumba
Принадлежит: Haier US Appliance Solutions Inc, University of Louisville Research Foundation ULRF

A method for detecting head crashing in a linear compressor includes sampling a rolling average of a peak applied voltage and a desired peak current each time that a current controller adjusts the desired peak current. The method also includes calculating a linear regression for a predicted peak applied voltage as a function of the desired peak current, calculating the predicted peak voltage for the motor of the linear compressor with the linear regression and a current value for the desired peak current from the current controller, and establishing that a piston of the linear compressor is soft crashing when the predicted peak voltage is different than the current value for the rolling average of the peak applied voltage by more than a threshold value.

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Номер записи: 68
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: 69
12-03-2015 дата публикации

LINEAR MOTOR, A LINEAR COMPRESSOR, A METHOD OF CONTROLLING A LINEAR COMPRESSOR, A COOLING SYSTEM, AND A LINEAR COMPRESSOR CONTROLLING A SYSTEM

Номер: US20150071792A1
Автор: Dainez Paulo Sergio, Lilie Dietmar Erich Bernhard, Thiessen Marcio Roberto
Принадлежит: WHIRLPOOL S.A.

A linear motor (), a linear compressor (), a method of controlling a linear compressor (), a cooling system () and a system of controlling a linear compressor () to operate a linear compressor () in resonance in it's the greatest possible efficiency throughout its operation are described. One of the ways of achieving these objectives is by means of a linear compressor () applicable to a cooling system (), the linear compressor () comprising a piston () driven by a linear motor (), the piston () having displacement range controlled by means of a controlled voltage (V), the controlled voltage (V) having a voltage frequency (φ) applied to the linear motor () and adjusted by a processing unit (), the range of piston () displacement being dynamically controlled in function of a variable demand of the cooling system (), the linear compressor () having a resonance frequency, the processing unit () adjusting the range of piston () displacement, so that the linear compressor () will be dynamically kept on resonance throughout the variations in demand of the cooling system (). 130-. (canceled)311001001101010100. A method of controlling a linear compressor () , the linear compressor () comprising a piston () driven by a linear motor () , the linear motor () being fed by a controlled voltage (V) having a voltage feed frequency (f) of the linear motor () and generating a capacity of the linear compressor () ,wherein the method comprises the following steps of:{'sub': VP', 'VP, 'b': '10', 'measuring the feed frequency (f) of the linear motor () and compensating the feed frequency (f) by comparing the measurement with a reference frequency (FR) and'}{'b': '100', 'sub': 'VP', 'increasing the capacity of the linear compressor () if the voltage feed frequency (f) is higher than the reference frequency (FR), or'}{'b': '100', 'sub': 'VP', 'decreasing the capacity of the linear compressor () if the voltage feed frequency (f) is lower than the reference frequency (FR).'}32100. A method ...

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Номер записи: 70
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: 71
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: 72
17-03-2022 дата публикации

Method and system for controlling a free piston mover

Номер: US20220085743A1
Автор: Matthew Viele, Samuel Edward Cockerill
Принадлежит: LIBERTINE FPE LTD

Adaptive control of a Free Piston Mover (1, 19), wherein a Control Parameter Set (COPS′) for closed loop control of a Target Control Variable (CVt) is adapted using a Future-Stroke Controller (20) to respond to Input Demand (21) signals whilst ensuring a sufficient current control margin and compensating for system changes over time. The Control Parameter Set (COPS′) is transmitted to an In-Stroke Controller (23) in advance of the start of a stroke to be controlled, and the In-Stroke Controller (23) transmits a Current Demand (Qt) to a Current Controller (25) of the Free Piston Mover (119).

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Номер записи: 73
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: 74
24-03-2022 дата публикации

METHOD FOR MANAGING A PISTON PUMP FOR A HEAT ENGINE

Номер: US20220090557A1
Автор: MOINE Xavier
Принадлежит:

Disclosed is a method for managing a piston pump using a computer of a vehicle, the pump including a guide, a piston slidably mounted in the guide, and a solenoid, suitable for moving the piston, the method including, as long as the fuel pressure in the compression chamber of the pump is below a predetermined pressure threshold, a step of the computer controlling the solenoid in order to move the piston to its high position, and a step of the computer detecting that the predetermined pressure threshold has been exceeded when the current value, measured after a predetermined period, is greater than or equal to a predetermined reference value so that the computer ceases to control the solenoid. 1. A method for managing a piston pump of a fuel injection system on board a combustion engine vehicle using a computer of said vehicle , in the starting phase of the vehicle during which the pump operates to pressurize the fuel when the combustion engine has not yet started , said pump comprising a guide , a piston slidably mounted in said guide in order to form a fuel compression chamber , and a solenoid suitable for , when a control current generated by the computer passes through the solenoid , moving the piston between a low position in which the compression chamber is suitable for being emptied of fuel and a high position in which the compression chamber is suitable for being filled with fuel— the intake phase— and a return spring acting on the piston to return the piston to the low position in the absence of said control current passing through the solenoid— the compression phase— said method comprising , as long as the fuel pressure in the compression chamber is below a predetermined pressure threshold:the piston initially being under the effect of the return spring, causing the computer controlling the solenoid to move the piston to the piston's high position,after a predetermined period, causing the computer to measure a value of the intensity of the current passing ...

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Номер записи: 75
24-03-2022 дата публикации

HYDRAULIC FRACTURING PUMP CONTROL SYSTEM

Номер: US20220090594A1
Автор: Bailey Bradley Scott, Crosman, III Alexander C., Peterson Lucas J, Reddy Suresh Baddam
Принадлежит: CATERPILLAR INC.

A monitor and control system for a hydraulic fracturing pump is described herein to reduce or eliminate harmful oscillations in fluid discharge pressure caused by the pump load dynamics. The monitor and control system receives various sensor data from the operation of the pump, including the pump crank position, and executes a pump control equation or model based on the pump sensor data, pump load data and/or pump speed data. Pump control equations or models are specific to the design and dynamic operation of the pump, incorporating the number of plungers, pump dynamics, motor lag and motor dynamics, etc. Using the pump control equations or models, the monitor and control system determines control commands for the pump motor to reduce or eliminate the oscillatory discharge pressure at the pump. 1. A motor control system associated with a hydraulic fracturing pump , comprising:a pump crank position sensor;one or more central processing units (CPUs); and{'claim-text': ['transmitting a first control command to a motor associated with the hydraulic fracturing pump;', 'receiving crank position data from the pump crank position sensor, the crank position data indicating an orientation of a crankshaft of the hydraulic fracturing pump at a first time during the operation of the motor;', 'determining load data associated with the hydraulic fracturing pump as the motor operates in accordance with the first control command;', 'determining a second control command for the motor associated with the hydraulic fracturing pump, based at least in part on the crank position data, and the load data associated with the hydraulic fracturing pump; and', 'transmitting the second control command to the motor associated with the hydraulic fracturing pump.'], '#text': 'memory storing executable instructions that, when executed by the one or more CPUs, cause the CPUs to perform operations comprising:'}2. The motor control system of claim 1 , the operations further comprising:determining a ...

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Номер записи: 76
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: 77
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: 78
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: 79
14-03-2019 дата публикации

Solenoid Current Monitoring Method for Leak Detection and Vapor Lock

Номер: US20190078959A1
Автор: Jason Carman, Nile Fairfield
Принадлежит: Milton Roy LLC

A metering pump is typically used to move a specified volume of liquid in a specified amount of time. Because it may be desirable to maintain fluid in the pumping system such that the metering pump is maintained in a primed condition, an automatic prime detection function is provided by monitoring the current to a solenoid assembly of the pump. A loss of prime condition can then be detected by comparing the measured current to a characterized selected current value such that operation of the metering pump can be changed based on load.

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Номер записи: 80
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: 81
25-03-2021 дата публикации

SEMI-TRAILER-LOADED TURBINE FRACTURING EQUIPMENT

Номер: US20210088042A1
Автор: Chang Sheng, Lan Chunqiang, Li Xiance, Li Xincheng, Wu Yipeng, Zhang Peng, Zhang Rikui
Принадлежит:

The present invention discloses a semi-trailer-loaded turbine fracturing equipment, which adopts a linear connection of the whole equipment and a special chassis design, so that the center of gravity is double lowered to guarantee its stability and safety, the structure is simpler, the investment and operation costs are decreased, the risk of total breakdown of the fracturing site is reduced, and the equipment has a good transmission performance and is suitable for continuous operation conditions with long time and heavy load. The plunger pump is improved in that the distance between the center of rotation of the bellcrank and the center of rotation of the crankshaft is optimized so that the rated input power is increased to 5000-7000 hp, the transmission ratio of the reduction gearbox integrated on the plunger pump is optimized so that the maximum input speed can reach 16000 rpm, the superhigh speed allows the reduction gearbox to be connected directly to the turbine engine to address the problem that the turbine fracturing equipment is decelerated through two reduction gearboxes, thus decreasing the weight of the vehicle and reducing the overall size of the equipment. 1. A semi-trailer-loaded turbine fracturing equipment , wherein the turbine fracturing equipment comprises a transporter , an exhaust system , a turbine engine and a plunger pump , the exhaust system is connected to an exhaust port of the turbine engine , an output end of the turbine engine is connected directly to the plunger pump , the transporter is used to support the exhaust system , the turbine engine and the plunger pump , the plunger pump comprises a power end assembly , a hydraulic end assembly and a reduction gearbox assembly , one end of the power end assembly is connected to the hydraulic end assembly , the other end of the power end assembly is connected to the reduction gearbox assembly , the reduction gearbox assembly comprises two planetary reduction gearboxes and a parallel reduction ...

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Номер записи: 82
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: 83
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: 84
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: 85
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: 86
12-05-2022 дата публикации

HYDRAULIC ACTUATOR WITH OVERPRESSURE COMPENSATION

Номер: US20220145868A1
Автор: ALFAYAD Samer, KARDOFAKI Mohamad, SLEIMAN Maya
Принадлежит:

A hydraulic actuator includes a variable-delivery positive-displacement pump, a member able to continuously vary the delivery of the pump, the member being actuated by a ram supplied by a first directional-control valve commanded on the basis of an actuator movement instruction. The actuator comprises a second directional-control valve commanded on the basis of an output pressure of the pump, the second directional-control valve comprising two positions, one of them, known as the rest position, obtained as long as the output pressure of the pump is below a predetermined pressure and transmitting the output from the first directional-control valve to the double-acting ram and the other, referred to as the active position, transmitting the output pressure of the pump to the ram so as to reduce the output pressure of the pump without passing via the first directional-control valve. 1. A hydraulic actuator comprising a variable-delivery positive-displacement pump , a first directional-control valve commanded on the basis of an actuator movement instruction , and a ram supplied by the first directional-control valve , the pump comprising a mobile member a movement of which allows the delivery of the pump to be continuously varied , the member being able to be moved by the ram , the first directional-control valve being able to apply a continuous function linking the movement instruction to the delivery of the pump via the position of the member as it moves , wherein the actuator comprises a second directional-control valve commanded on the basis of an output pressure (P) of the pump , the second directional-control valve comprising two positions , one of them , known as the rest position , obtained as long as the output pressure (P) of the pump is below a predetermined pressure and transmitting the output from the first directional-control valve directly to the double-acting ram , thereby allowing the pump to follow the continuous function and the other , referred to as ...

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Номер записи: 87
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: 88
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: 89
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: 90
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: 91
26-04-2018 дата публикации

SUBSEA MULTIPISTON PUMP MODULE AND SUBSEA MULTISTAGE PUMP

Номер: US20180112655A1
Автор: ASH Ben, DICKER Keith, REID Brendan
Принадлежит: FUGRO-IMPROV PTY LTD

The present invention relates to a subsea multipiston pump module, a subsea multistage pump and skid, having two reciprocating pistons controlled by a control means in such a way that the pistons can be driven either in a parallel mode, where the pistons are driven in phase with each other, or in a serial mode, where the pistons are driven out of phase with each other, wherein the pistons are fluidly connected with each other by a piston connection means in such a way that in parallel mode they are fluidly connected in parallel, and in serial mode, they are fluidly connected in serial. Further, the invention relates to a method of pumping a media fluid under subsea conditions. 1. A subsea multipiston pump for closing a hydraulic ram of a blowout preventer , comprising:at least a first and a second piston, oscillatingly arranged to pump a media fluid from a source to a target,the first and the second pistons being driven either in a parallel mode oscillating in phase with each other, or in a serial mode oscillating out of phase by half a cycle with each other;at least one piston connection device for means fluidly connecting the two pistons in a controllable manner, so that in parallel mode the first and the second pistons are pumping the media fluid in parallel, and in serial mode, the first and the second pistons are pumping the media fluid in serial.2. The subsea multipiston pump according to claim 1 , wherein the first and the second pistons are arranged within a common housing.3. The subsea multipiston pump according to claim 1 , wherein the first and the second pistons comprise at least two piston heads oscillating forth and back in respective piston chambers for pumping the media fluid.4. The subsea multipiston pump according to claim 1 , wherein the first and the second pistons is are fluidly connected with a suction manifold for suction of the media fluid and with a discharged manifold for discharge of the media fluid.5. The subsea multipiston pump according ...

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Номер записи: 92
02-04-2020 дата публикации

Drive Device, Hydraulic Pump, Motor Vehicle

Номер: US20200106326A1
Автор: Edgar Kurz, Juergen Haecker, Massimiliano Ambrosi, Michael Eisenlauer, Wolfgang Schuller
Принадлежит: ROBERT BOSCH GMBH

A drive device for a hydraulic pump of a braking system for a motor vehicle includes a housing, a rotor, a rotor shaft mounted in the housing and supporting the rotor, and a commutator arranged in the housing. The commutator includes at least one commutator brush held by a brush holder. The commutator brush cooperates with a commutator ring arranged on the rotor shaft in a non-rotatable manner. The brush holder includes a sealing ring assigned to the commutator which is arranged coaxially to the rotor shaft and interacts with the rotor shaft in a sealing manner.

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Номер записи: 93
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: 94
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: 95
03-05-2018 дата публикации

DEVICE AND METHOD FOR CONTROLLING COMPRESSOR OF VEHICLES TO ACCUMULATE COLD AIR ENERGY IN AN EVAPORATOR DURING A SPEED-REDUCING CONDITION AND USING THE LATTER IN A RELEASE CONDITION

Номер: US20180119685A1
Автор: JANG Ki Lyong, KIM Jae Woong, LEE Chang Won
Принадлежит:

A device for controlling a compressor of vehicles may include a sensor module including a cabin temperature sensor, an outdoor temperature sensor, an evaporator temperature sensor detecting a temperature of cooling medium in an evaporator, a vehicle speed sensor, and a brake sensor, an injector, an air conditioning system including a condenser, an evaporator, the compressor, a temperature control door controlling a temperature of air flowing into a cabin, an intake door selectively distributing an inner air or an outer air into the cabin, and a blower blowing the air to the intake door, and a controller controlling the injector and the air conditioning system, wherein the controller accumulates a cold air energy by increasing an operation of the compressor if a speed-reducing condition occurs, and the air conditioning system uses the accumulated cold air energy by decreasing the operation of the compressor if a release condition occurs. 110-. (canceled)11: A method for controlling a compressor of a vehicle provided with an air conditioning system including a condenser condensing and liquefying the cooling medium , an evaporator evaporating the liquefied cooling medium , the compressor compressing the cooling medium , a temperature control door controlling a temperature of air flowing into a cabin of the vehicle , an intake door selectively distributing an inner air or an outer air into the cabin of the vehicle , and a blower blowing the air to the intake door , the method comprising:a) determining whether a speed-reducing condition occurs;b) determining, in a case that the speed-reducing condition occurs, whether an evaporator temperature is higher than a first target temperature;c) increasing, in a case that the evaporator temperature is higher than the first target temperature, an operation of the compressor based on a difference between the evaporator temperature and the first target temperature;d) determining whether the evaporator temperature is lower than a ...

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Номер записи: 96
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: 97
04-05-2017 дата публикации

LINEAR COMPRESSOR AND METHOD FOR CONTROLLING A LINEAR COMPRESSOR

Номер: US20170122307A1
Автор: CHOI JONGYOON, JUNG Wooyoung, KANG Dowon, Kim Donghyun, KIM Hyeongseok
Принадлежит:

A linear compressor is provided which is capable of reducing noise and fabrication costs. The linear compressor may include a piston that performs a reciprocating motion within a cylinder, a linear motor that supplies a driving force to the piston, a sensor that detects a motor voltage and motor current associated with the motor, a valve plate provided at one end of the cylinder to adjust a discharge of a refrigerant compressed in the cylinder, a pressure changing unit or device that changes a variation rate of pressure applied to the piston before the piston reaches the valve plate during the reciprocating motion, and a controller that determines whether the variation rate of the pressure applied to the piston has changed using the detected motor voltage and motor current, and controls the motor to prevent the piston from colliding with the valve plate on the basis of the determination result. 1. A linear compressor , comprising:a piston that performs a reciprocating motion within a cylinder;a linear motor that supplies a driving force to the piston;a sensor that detects a motor voltage and a motor current associated with the motor;a valve plate provided at one end of the cylinder to adjust a discharge of a refrigerant compressed in the cylinder;a pressure changing unit that changes a variation rate of pressure applied to the piston before the piston reaches the valve plate during the reciprocating motion; anda controller that determines whether the variation rate of the pressure applied to the piston has changed using the detected motor voltage and motor current, and controls the motor to prevent the piston from colliding with the valve plate on the basis of a determination result.2. The linear compressor of claim 1 , further including a stroke estimator that estimates a stroke of the piston using the detected motor voltage and motor current claim 1 , wherein the controller controls the motor based on a phase difference between the estimated stroke and the motor ...

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Номер записи: 98
25-08-2022 дата публикации

PUMPING UNIT ENGINE SPEED OSCILLATION DETECTION AND MITIGATION

Номер: US20220268270A1
Автор: Ralls Corey Gene
Принадлежит:

An oscillation controller operates on engine speed or RPM data from a pump or pumping unit associated with a wellbore operation. The oscillation controller determines a measure of variability, such as a bandwidth, for the engine speed over a rolling time window and compares the measure of variability to an oscillation bandwidth threshold. The oscillation controller determines that erratic behavior or oscillation is present when the measure of variability exceeds the oscillation bandwidth threshold, and for such instances measures a duration of erratic behavior with a variability timer. If the oscillation controller determines that the erratic behavior has subsided, the variability timer is cleared. The oscillation controller generates at least one warning whenever the variability timer exceeds an oscillation warning threshold. The oscillation controller mitigates erratic behavior by downshifting (or shifting to neutral) at least one gear of the pump or pumping unit if the variability timer exceeds an oscillation mitigation time threshold. 1. A method comprising:determining a first measure of engine speed variability over a first time period based, at least in part, on engine speed data associated with one or more pumping unit of a wellbore operation;comparing the first measure of engine speed variability to an oscillation bandwidth threshold;detecting erratic behavior in engine speed corresponding to the first time period based, at least in part, on a determination that the first measure of engine speed variability exceeds the oscillation bandwidth threshold; andindicating detected erratic behavior in engine speed corresponding to the first time period.2. The method of claim 1 , wherein indicating detected erratic behavior in engine speed comprises at least one of generating a first warning and logging the detected erratic behavior as an event.3. The method of claim 1 , further comprising:based on detecting erratic behavior in engine speed corresponding to the first ...

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Номер записи: 99
25-08-2022 дата публикации

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

Номер: US20220268273A1
Автор: McCarthy Dan
Принадлежит:

Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature. 1. A method of adaptively controlling a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor , the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes , the method comprising:monitoring, during a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston; andcontrolling reversal of the driving force after the first stroke based on the speed, load pressure, and temperature.2. The method of claim 1 , wherein controlling reversal of the driving force comprises determining a lag time before reversing the direction of the driving force claim 1 , and delaying reversal of the driving force by the lag time.3. The method of claim 2 , further comprising:monitoring whether the piston has or has not reached a predefined end position during a previous stroke; andin response to the piston not reaching the predefined end position during the previous stroke, increasing the lag time by a pre-selected increment.4. The method of claim 3 , wherein the pre-selected increment is 1 millisecond.5. The method of any one of to claim 3 , further comprising:monitoring an end of stroke event; andin response to occurrence of the end of stroke event, decreasing the lag time by a sufficient amount to avoid recurrence of the ...

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Номер записи: 100