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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 4699. Отображено 100.
20-02-2020 дата публикации

Насосная станция

Номер: RU0000196188U1
Автор: Виктор Прокопьевич Тациенко, Геннадий Даниилович Буялич, Константин Александрович Бубнов, Михаил Константинович Хуснутдинов
Принадлежит: федеральное государственное бюджетное образовательное учреждение высшего образования "Кузбасский государственный технический университет имени Т.Ф. Горбачева" (КузГТУ)

Насосная станция предназначена для подачи рабочей жидкости в виде масла в исполнительные гидравлические механизмы, работающие в условиях необходимости защиты от воспламенения, преимущественно в условиях подземных горных выработок при добыче полезного ископаемого с наличием взрывоопасной окружающей среды. Обеспечивается большая безопасность работы находящейся вблизи исполнительных механизмов горных машин насосной установки при использовании масла для питания исполнительных гидравлических механизмов в условиях наличия взрывоопасной окружающей среды с обеспечением тепловой защиты гидросистемы и защиты от утечек без значительного усложнения конструкции и при совмещении элементов устройств аварийного отключения двигателя и включения и отключения подачи масла напорной гидролинией гидронасоса. Имеется гидронасос с приводом от двигателя, выполненного в виде гидромотора. Имеется маслобак, напорная и всасывающая из маслобака масляные гидролинии гидронасоса, сливная в маслобак гидролиния. Напорная и сливная гидролинии гидромотора подключены, соответственно, к внешним подводящим и отводящим рабочую жидкость на водной основе напорной и сливной гидролиниям. Имеется устройство аварийного отключения двигателя и устройство включения и отключения подачи масла напорной гидролинией гидронасоса, выполненные следующим образом. Напорная гидролиния гидромотора подключена к гидромотору в направлении в нему посредством параллельных друг к другу устройств, одно из которых выполнено с функцией крана с наличием внешнего управления, а другое выполнено с функцией нормально закрытого гидравлически управляемого крана с управляющей полостью, сообщенной с напорной гидролинией гидронасоса. Напорная гидролиния гидронасоса имеет подключение к маслобаку в направлении к нему посредством параллельных друг к другу устройств, одно из которых выполнено с функцией крана с наличием внешнего управления, а другое выполнено в виде плавкого предохранителя, способного сообщать напорную гидролинию гидронасоса с ...

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Номер записи: 1
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: 2
02-02-2012 дата публикации

Peristaltic Pump

Номер: US20120027622A1
Автор: Nancy Ashburn
Принадлежит: Watson Marlow Ltd

A peristaltic pump comprises a pump unit including a pump which receives a replaceable tube. In operation, the pump unit applies a peristaltic action to the tube to induce fluid flow between inlet and outlet ends of the tube. The tube has a transponder, for example an RFID tag, which carries data relating to the tube. The pump unit has a reader which is capable of reading the data on the RFID tag. On the basis of a comparison between the tube data on the RFID tag and control data held in a memory of the reader, the reader outputs a control signal to operating means of the pump unit which permits operation of the pump unit if the tube data is compatible with the control data, but prevents such operation if the tube data is incompatible with the control data, for example indicting that an incorrect tube has been fitted, or the tube is approaching the end of its predicted operational life.

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Номер записи: 3
19-07-2012 дата публикации

Compressor overload protection device

Номер: US20120183414A1
Автор: Chen-Nan Chu, Hsueh-Hsien Lu, Lung-Yi Yeh, Wen-Ho Yu
Принадлежит: Rechi Precision Co Ltd

A compressor overload protection device utilizes a first electrode of an electric connector to electrically connect a first OLP overload protection loop that is electrically connected to a first power line of an external power source. In addition, a second OLP overload protection loop is connected to a second electrode and a third electrode of the electric connector, and a capacitor is electrically connected between the third electrode and the first electrode. When the operation of the compressor is overloaded, the first and second OLP overload protection loop can provide proper protection mechanism with respect to the first power line and the second power line to prevent a motor of the compressor from being overheated and damaged, and the electrodes of the electric connector can be effectively prevented from exploding.

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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
21-03-2013 дата публикации

POWER GENERATING APPARATUS OF RENEWABLE ENERGY TYPE

Номер: US20130067900A1
Автор: Caldwell Niall, Dumnov Daniil, Fox Robert, Karstens Hauke, Korematsu Yasuhiro, Laird Stephen, Maekawa Atsushi, Noguchi Toshihide, Pappala Venkata, Rampen William, ROBERTSON Alasdair, Salter Stephen, Shimizu Masayuki, Stein Uwe, Tsutsumi Kazuhisa
Принадлежит: MITSUBISHI HEAVY INDUSTRIES, LTD.

A power generating apparatus includes a rotating shaft, a hydraulic pump driven by the rotating shaft, a hydraulic motor driven by pressurized oil supplied from the hydraulic pump, and a generator coupled to the hydraulic motor. Each of the hydraulic pump and motor includes working chambers each defined by a cylinder and a piston, a high pressure manifold and a low pressure manifold. Each of the high and low pressure manifolds includes branch channels connected to the working chambers and a merging channel connected to a high or low pressure oil line. The branch channels are equipped with high or low pressures valves, joined together and merged into the merging channel. 1. A power generating apparatus of renewable energy type which generates power from a renewable energy source , comprising:a rotating shaft driven by the renewable energy source;a hydraulic pump driven by the rotating shaft;a hydraulic motor which is driven by pressurized oil supplied from the hydraulic pump;a generator coupled to the hydraulic motor;a high pressure oil line through which a discharge side of the hydraulic pump is in fluid communication with an intake side of the hydraulic motor; anda low pressure oil line through which an intake side of the hydraulic pump is in fluid communication with a discharge side of the hydraulic motor,wherein each of the hydraulic pump and the hydraulic motor comprises:a plurality of working chambers each of which is surrounded by a cylinder and a piston reciprocating within the cylinder;a high pressure manifold including first branch channels each connected to the working chambers and a first merging channel connected to the high pressure oil line, the first branch channels joining together and merging into the first merging channel;a low pressure manifold including second branch channels each connected to the working chambers and a second merging channel connected to the low pressure oil line, the second branch channels joining together and merging into the ...

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Номер записи: 6
18-04-2013 дата публикации

DEAD-VOLUME MANAGEMENT IN COMPRESSED-GAS ENERGY STORAGE AND RECOVERY SYSTEMS

Номер: US20130091836A1
Автор: Berg Joel, Bollinger Benjamin R., McBride Troy O.
Принадлежит: SUSTAINX, INC.

In various embodiments, coupling losses between a cylinder assembly and other components of a gas compression and/or expansion system are reduced or eliminated via valve-timing control. 1. An energy storage and recovery system comprising:a cylinder assembly for at least one of expanding gas to recover energy or compressing gas to store energy;a high-side component, selectively fluidly connected to the cylinder assembly, for at least one of (i) supplying gas to the cylinder assembly for expansion therein or (ii) accepting gas from the cylinder assembly after compression therein;a low-side component, selectively fluidly connected to the cylinder assembly, for at least one of (i) supplying gas to the cylinder assembly for compression therein or (ii) accepting gas from the cylinder assembly after expansion therein; anda control system for operating the cylinder assembly to perform at least one of (i) a pre-compression of gas therewithin prior to admission therein of gas for expansion, thereby reducing coupling loss between the cylinder assembly and the high-side component, or (ii) a pre-expansion of gas therewithin prior to admission therein of gas for compression, thereby reducing coupling loss between the cylinder assembly and the low-side component.2. The system of claim 1 , further comprising a sensor for sensing at least one of a temperature claim 1 , a pressure claim 1 , or a position of a boundary mechanism within the cylinder assembly to generate control information claim 1 , the control system being responsive to the control information.3. The system of claim 2 , wherein the control system is configured to operate the cylinder assembly claim 2 , during at least one of (i) pre-compression of gas therewithin or (ii) expansion of gas therewithin claim 2 , based at least in part on control information generated during at least one of (i) a previous gas expansion within the cylinder assembly or (ii) a previous pre-compression of gas within the cylinder assembly.4. ...

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Номер записи: 7
02-05-2013 дата публикации

DISCHARGE PRESSURE ACTUATED PUMP

Номер: US20130105173A1
Автор: Duncan Grant
Принадлежит: SUNCOR ENERGY INC.

A pump has a pump barrel formed from a larger diameter section and a smaller diameter section. Each section has a biased piston moveable within the section and the pistons are connected together to form a variable volume chamber between the pistons. As the connected pistons move toward the larger diameter section, a volume of fluid is moved through an inlet valve into the variable volume chamber of increasing volume. When the pistons are moved toward the smaller diameter section, a differential volume of fluid is discharged from the variable volume chamber of decreasing volume through a discharge valve into a discharge conduit. The pistons are actuated to move within the pump barrel by application and release of pressure at a remote end of the discharge conduit. 1. A fluid apparatus comprising:a pump barrel having a first barrel section in fluid communication with a fluid source and a second barrel section in fluid communication with a discharge conduit;a first piston housed in the first barrel section for axial movement therein;a second piston housed in the second barrel section for axial movement therein in response to application of an actuating pressure to the discharge conduit, the first and second pistons defining a variable volume chamber between the first and second pistons;a biasing element coupled to at least one of the first and second pistons;an inlet check valve operable to permit fluid to flow from the fluid source into the variable volume chamber;an outlet check valve operable to permit fluid to flow from the variable volume chamber into the discharge conduit; anda connector between the first and second pistons, the connector being operably configured to cause movement of the first piston in response to movement of the second piston caused by the actuating pressure, the respective movements of the first and second pistons being operable to increase the volume of the variable volume chamber thereby drawing fluid into the chamber through the inlet check ...

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Номер записи: 8
09-05-2013 дата публикации

COMPRESSOR DISCHARGE TEMPERATURE MONITOR AND ALARM

Номер: US20130115109A1
Автор: Hall William G.
Принадлежит:

A compressor protection method and system capable of continuously establishing compressor discharge temperature set points based on actual in-service conditions and detecting damaged compressor valves for a given cylinder at each stage of compression. The method and system utilize sensors configured to monitor process property parameters (e.g. temperature and pressure) at the inlet section and outlet section of a compressor stage. The sensors generate monitored signals corresponding to the process property parameters. The method and system utilize a controller configured to receive and process these monitored signals. The controller executes a control logic that uses the monitored signals to either estimate or calculate compressor valve pressure losses for determining internal cylinder pressures, which are used to calculate compressor discharge temperature set points. The control logic compares the monitored temperature to the temperature set points and may generate a warning or normal operation signals based on results of the comparison. 1. A method for protecting a compressor with at least one compression stage having at least one cylinder , an inlet section configured to receive a gas wherein the inlet section comprises inlet piping and an inlet compressor valve , an outlet section configured to discharge the gas wherein the outlet section comprises outlet piping and an outlet compressor valve , sensors configured to monitor selected process property parameters at the inlet section and outlet section and generate monitored signals corresponding to the process property parameters , and a controller configured to receive the monitored signals , execute a control logic and generate signals , the control logic comprising: 'i. collecting data for the monitored selected process property parameters at the inlet section and outlet section using the sensors, wherein the monitored process property parameters comprise gas inlet temperature, gas inlet pressure, gas outlet ...

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Номер записи: 9
16-05-2013 дата публикации

Variable Speed High Efficiency Gas Compressor System

Номер: US20130121844A1
Автор: Knowles Joe
Принадлежит: DRESSER-RAND COMPANY

A system for powering a compressor. The system may include a power generation unit adapted to generate AC power. An electric motor may be coupled to the power generation unit and adapted to turn at a rate proportionate to a frequency of the AC power. A compressor may be coupled to the electric motor, and an output pressure of the compressor may be directly dependent on the rate that the electric motor turns. A control system may be coupled to the power generation unit and to the compressor, and the control system may be adapted to vary the frequency of the AC power generated by the power generation unit, thereby varying the output pressure of the compressor. 1. A system for powering a compressor , comprising:a power generation unit adapted to generate AC power;an electric motor coupled to the power generation unit, the electric motor adapted to turn at a rate proportionate to a frequency of the generated AC power;a compressor coupled to the electric motor, an output pressure of the compressor being directly dependent on the rate that the electric motor turns; anda control system coupled to the power generation unit and to the compressor, the control system being adapted to vary the frequency of the AC power generated by the power generation unit, thereby varying the output pressure of the compressor.2. The system of claim 1 , wherein the power generation unit further comprises:an engine adapted to run at variable speeds; andan electric generator coupled to the engine and adapted to generate the AC power, the frequency of the AC power being directly dependent on the speed of the engine.3. The system of claim 1 , wherein the power generation unit comprises a plurality of power generation units claim 1 , and wherein the control system is adapted to regulate each power generation unit independently to match a power demand of the electric motor.4. The system of claim 1 , further comprising a busbar claim 1 , wherein the power generation unit and the electric motor are ...

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Номер записи: 10
04-07-2013 дата публикации

ELECTRIC PUMP SYSTEM

Номер: US20130171008A1
Автор: Aoki Yasuyuki, Kagawa Hiroki, Uda Kengo
Принадлежит: JTEKT CORPORATION

In an electric pump system, hydraulic fluid that is stored in an oil pan is supplied to a transmission mechanism through an oil passage by driving an oil pump with the use of a motor. An EOPECU estimates a hydraulic pressure of the hydraulic fluid on the basis of a driving current for the motor and a rotation speed of the motor, and executes drive control on the motor on the basis of the estimated hydraulic pressure value. 1. An electric pump system , comprising:an oil pump that supplies hydraulic fluid to a hydraulically-actuated device through an oil passage as a motor is driven; anda control unit that executes drive control on the motor based on a hydraulic pressure of the hydraulic fluid in the oil passage, whereinthe control unit estimates a hydraulic pressure value of the hydraulic fluid based on a driving current for the motor and a rotation speed of the motor.2. The electric pump system according to claim 1 , wherein the control unit corrects the estimated hydraulic pressure value based on a power supply voltage of the motor.3. The electric pump system according to claim 1 , wherein the control unit corrects the estimated hydraulic pressure value based on a fluid temperature of the hydraulic fluid.4. The electric pump system according to claim 2 , wherein the control unit corrects the estimated hydraulic pressure value based on a fluid temperature of the hydraulic fluid.5. The electric pump system according to claim 3 , wherein the estimated hydraulic pressure value is corrected for each of a plurality of fluid temperature ranges defined in advance.6. The electric pump system according to claim 4 , wherein the estimated hydraulic pressure value is corrected for each of a plurality of fluid temperature ranges defined in advance.7. The electric pump system according to claim 5 , wherein the estimated hydraulic pressure value is corrected by multiplying the estimated hydraulic pressure value by one of fluid temperature correction gains that are set for the ...

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Номер записи: 11
11-07-2013 дата публикации

NEUTRAL SETTING DEVICE FOR AN ADJUSTABLE HYDRAULIC MACHINE

Номер: US20130174925A1
Автор: BAHNA Peter, BUJNA Sebastian, CHEBLANA Peter, CHMATIL Miroslav, KNAZEK Michael, THOMS Reinhardt
Принадлежит: SAUER-DANFOSS GMBH & CO. OHG

The invention relates to a neutral setting device of an adjustable hydraulic machine, in particular the adjustment of the neutral setting of a servo valve. The present invention relates in particular to servo adjustment devices with mechanically adjustable control pistons, wherein the necessary force can be applied mechanically, electromagnetically, pneumatically or hydraulically. The invention relates to a neutral setting device of an adjustable hydraulic machine with a housing in which a mounted input shaft is arranged, at which on one end a torque can be applied for turning the input shaft around an axis. On a second end a cylindrical extension is arranged eccentrically parallel to the axis. An adjustable control piston for opening and closing hydraulic fluid openings for application of pressure of a servo piston adjusts the hydraulic machine with respect to its delivery volume. 112. A neutral setting device () of an adjustable hydraulic machine with a housing () , in which are arranged:{'b': 3', '2', '3', '3', '23', '3', '25', '23, 'i': a', 'b, 'an input shaft () mounted in the housing () with a first end (), at which a torque can be applied for turning the input shaft () around an axis (), and a second end (), at which a cylindrical extension () eccentrically parallel to the axis () is arranged,'}{'b': 4', '24, 'an adjustable control piston () for opening and closing hydraulic fluid openings for application of pressure of a servo piston (), which adjusts the hydraulic machine with respect to its delivery volume,'}{'b': 5', '5', '5', '5', '5', '5', '25', '3', '5', '5', '4', '5', '5', '6', '24', '5, 'i': a', 'b', 'c', 'a,', 'b', 'a', 'b, 'a lever (), with a first end () and a second end () as well as with a bearing position () arranged between the two ends (), in which the cylindrical extension () of the input shaft () engages, wherein the first end () of the lever () is connected in an articulated manner to the control piston () and the second end () of the ...

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Номер записи: 12
01-08-2013 дата публикации

DOUBLE-ACTION SUCKER-ROD WELL PUMP

Номер: US20130195702A1
Автор: Bessonov Igor Mikhailovich, Osnos Vladimir Borisovich, Strahov Dmitriy Vitalevich
Принадлежит:

A pump includes a two-stepped cylinder with cavities and a lower intake valve, and is connected to a tubing-string via a sub, which includes an upper intake valve and discharge valve. A hollow plunger is arranged in the cylinder below and above the cavities. The plunger is connected to a hollow rod and has a lower discharge valve and a through-hole provided above the lower discharge valve to provide communication between the plunger cavity and a chamber formed as said plunger is moved downwards in a lower step of the cylinder. An upper step of the cylinder includes an inner diameter which is smaller than the inner diameter of the tubing-string. The upper discharge valve is a bush arranged on the rod with longitudinal movement upwards along said rod with excess pressure in the cylinder cavity above the plunger, and downward movement in the liquid under its own weight. 1. A double-action sucker-rod well pump comprising a barrel , having a lower standing valve and connected to a pipe string with the use of a sub provided with an upper standing valve and an upper traveling valve , and a hollow plunger arranged in the barrel so as to form an under-plunger and an above-plunger cavities with the possibility of moving reciprocally , coupled with a hollow rod and having a lower traveling valve , characterized in that the barrel is made stepped with the lower step of a greater diameter and the upper step of a smaller diameter , the lateral wall of the plunger is provided with a through hole above the lower traveling valve that is intended for communication between the plunger cavity with a chamber forming when the plunger moves downwards in the lower step of the barrel , the upper step of the barrel is made with an inner diameter that is lesser than the inner diameter of a pipe string , a sub is made with an inner diameter that is lesser than the inner diameter of a pipe string , but that is not less than the inner diameter of the upper step of the barrel , the upper ...

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Номер записи: 13
15-08-2013 дата публикации

WAVE ENERGY CONVERSION

Номер: US20130205769A1
Автор: Allen Greg John, Fievez Jonathan Pierre, Mann Laurence Drew
Принадлежит:

An apparatus is provided for harnessing ocean wave energy, wherein the apparatus relieves excessive loadings on components to avoid damage thereof in adverse wave conditions. The apparatus includes a buoyant actuator and a pump anchored within the body of water. Fluid at high pressure is pumped ashore by the pump, energy is extracted as useful work at an on-shore plant, and the resultant reduced pressure fluid is returned to the offshore pump to be re-energized. The buoyant actuator is operably connected to the pump by tether and is buoyantly suspended within the body of water above the pump. The buoyant actuator is provided with a connector that includes a damping mechanism configured to maintain a substantially rigid connection between the hollow body and the tether until such time as loading therebetween exceeds a prescribed load whereupon the damping mechanism facilitates limited relative movement therebetween to relieve the loading. 1. A buoyant apparatus comprising a hollow body presenting an exterior surface , the hollow body being adapted to be continuously located below a water surface during operation , a damping means associated with the hollow body for connecting the hollow body to a tether , the damping means providing a yieldingly resilient connection between the hollow body and the tether , the buoyant apparatus being operatively connectable to a separate pump by way of a coupling which includes the tether.2. The buoyant apparatus according to wherein the damping means is configured to maintain a substantially rigid connection between the body and the tether until such time as loading therebetween exceeds a prescribed load whereupon the damping means facilitates limited relative movement therebetween to relieve the loading.3. The buoyant apparatus according to wherein the damping means is accommodated within the hollow body.4. The buoyant apparatus according to wherein the damping means comprises a damping mechanism and an accumulator operably coupled ...

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Номер записи: 14
15-08-2013 дата публикации

HYDRAULIC DUAL AXIAL PISTON MACHINE

Номер: US20130209284A1
Автор: Dreher Herbert
Принадлежит: ROBERT BOSCH GMBH

A hydraulic dual axial piston machine includes a first driving unit and a second driving unit arranged one behind the other in the direction of the axis of a drive shaft and oriented opposite each other. The first and second driving units each have a respective swashplate and single actuating piston. The first and second actuating pistons exert load on a pivot cradle in a functionally identical manner to increase or decrease a pivot angle of the respective swashplate. The first and second actuating pistons are spaced apart from a central plane of the swashplates which extends through the axis of the drive shaft such that dimensions of a housing in the direction of the pivot axes of the swashplates are minimally influenced. 1. A hydraulic dual axial piston machine comprising: [ a first swashplate configured to pivot about a first pivot axis to vary an inclination relative to the drive shaft axis; and', 'a single first actuating piston, which extends at least approximately parallel to the drive shaft axis and has a first end configured to engage on the first swashplate to pivot the first swashplate in one direction and has a second end configured to delimit a first actuating chamber into which control fluid flows to pivot the first swashplate in a first direction and out of which control fluid is displaced in the event of a pivoting movement of the first swashplate in a second direction,, 'wherein the first drive unit includes, a second swashplate configured to pivot about a second pivot axis which is parallel to the first pivot axis to vary an inclination relative to the drive shaft axis; and', 'a single second actuating piston, which extends at least approximately parallel to the drive shaft axis and has a first end configured to engage on the second swashplate to pivot the second swashplate in a functionally identical manner to the first actuating piston on the first swashplate and has a second end configured to delimit a second actuating chamber into which control ...

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Номер записи: 15
05-09-2013 дата публикации

METHOD FOR CONTROLLING VARIABLE DISPLACEMENT PUMP

Номер: US20130230413A1
Автор: Yamaji Kenpei
Принадлежит:

A method for controlling a variable displacement pump by calculation by a controller using a closed-center-type directional control valve, the method allowing effective utilization of the variable displacement pump while avoiding the risk of engine stall is provided. 1. A method for controlling a variable displacement pump , driven by an engine , the pump discharge flow rate of which can be adjusted from the outside , having an actuator or actuators connected thereto through one or more closed-center-type directional control valves , the closed-center-type directional control valves controlling the variable displacement pump in place of center-bypass-type directional control valves , the method comprising:detecting a real discharge flow rate of the variable displacement pump and an operation amount of the directional control valves;determining a first virtual discharge pressure from the real discharge flow rate of the variable displacement pump based on characteristic curve defining the relation between discharge pressure and discharge flow rate of the variable displacement pump;using the real discharge flow rate of the variable displacement pump as an actuator flow rate necessary for the actuators, determining a virtual bleed-off flow rate based on a virtual bleed-off area of the closed-center-type directional control valves determined according to the operation amount, and determining a second virtual discharge pressure of the variable displacement pump based on a value obtained by subtracting the actuator flow rate and the virtual bleed-off flow rate from the virtual discharge flow rate of the variable displacement pump; andcontrolling the variable displacement pump based on a smaller value of the first virtual discharge pressure and the second virtual discharge pressure.2. The method for controlling a variable displacement pump according to claim 1 , whereinwhen a plurality of the variable displacement pumps are connected to the engine, and one or more of the ...

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Номер записи: 16
26-09-2013 дата публикации

Apparatus for Controlling Electric Pump

Номер: US20130251541A1
Автор: Okamoto Naoki
Принадлежит: Hitachi Automotive Systems, Ltd.

In an apparatus for controlling an electric pump supplying operating oil to a driving system or the like of a vehicle, control satisfying both responsiveness and reduction in power consumption is performed even in a case in which an oil temperature sensor and a pump characteristic are abnormal. After starting of the electric pump, feedback control is performed in which a rotation number Nm of a driving motor is settled in a target rotation number Na set to satisfy predetermined performance. After satisfying a predetermined condition in which the motor rotation number Nm is in a stable state, motor current Im is settled in an indicated current Ip within a range of being equal to or less than a current limit value IL while the motor rotation number Nm is maintained equal to or greater than a required rotation number Np corresponding to the indicated current Ip. 1. An apparatus for controlling an electric pump supplying operating oil , comprising:a reference pump characteristic setting unit that sets a reference pump characteristic which is relationship between required current and a required rotation number of a motor for driving the electric pump required to obtain predetermined pump performance in accordance with a temperature of the operating oil;an indicated current setting unit that sets the required current as indicated current based on the reference pump characteristic in accordance with a detected temperature of the operating oil; anda control unit that controls a motor rotation number with a rotation number securing pump performance equal to or greater than the predetermined pump performance as a target rotation number in an initial stage of pump starting and, when the motor rotation number is greater than the required rotation number corresponding to the indicated current after settlement in a predetermined state by the motor rotation number control, settles motor current in the indicated current within a range in which the motor rotation number is ...

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Номер записи: 17
24-10-2013 дата публикации

CONTROL VALVE FOR A VARIABLE DISPLACEMENT COMPRESSOR

Номер: US20130276920A1
Автор: Kobayashi Takashi, Miyazaki Michiyoshi, Sakakibara Hidekazu, Shimazaki Satoshi, Tamotsu Kotaka
Принадлежит: TGK CO., LTD

A control valve according to an embodiment includes a body having a valve hole and a guiding passage formed coaxially with the valve hole, an actuating rod, slidably supported along the guiding passage, which is provided with a valve element, a solenoid for applying the solenoidal force in an opening or closing direction of a valve section to the valve element via the actuating rod, and a seal section, provided between the actuating rod and the guiding passage, which houses a sealing member for restricting the leakage of refrigerant from a high pressure side to a low pressure side. The actuating rod and the guiding passage are configured such that the clearance, between the actuating rod and the guiding passage, which is at a higher-pressure side of the seal section is larger than the clearance which is at a lower-pressure side of the seal section. 1. A control valve for a variable displacement compressor for varying a discharging capacity of the variable displacement compressor by controlling a flow rate of refrigerant to be introduced from a discharge chamber to a crankcase of the compressor , the control valve comprising:a body having a discharge pressure chamber that communicates with the discharge chamber, a crank pressure chamber that communicates with the crankcase, a valve hole provided in a passage joining the discharge pressure chamber to the crank pressure chamber, and a guiding passage formed coaxially with the valve hole;an actuating rod slidably supported along the guiding passage, the actuating rod having a valve element configured to open and close a valve section such that the valve element touches and leaves the valve hole;a solenoid configured to apply a solenoidal force in an opening or closing direction of the valve section to the valve element via the actuating rod; anda seal section provided between the actuating rod and the guiding passage, the seal section containing a sealing member therein where the sealing member serves to restrict ...

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Номер записи: 18
31-10-2013 дата публикации

FLUID SUPPLY DEVICE

Номер: US20130287594A1
Автор: MORIOKA Noriko, OYORI Hitoshi
Принадлежит: IHI AEROSPACE CO., LTD.

A fuel supply device according to the present invention comprises a first fuel pump for forcing fuel from a fuel tank to a fuel passage, a first electric motor for driving the first fuel pump, a second fuel pump for forcing fuel from the fuel tank to the fuel passage, a second electric motor for driving the second fuel pump, a supply flow rate sensor for detecting flow rate in the supply passage, and a control device for controlling the flow rate in the supply passage to follow a desired value thereof, by regulating rotational speeds of the first and second electric motors depending on a difference between the desired value and a detected value of flow rate in the supply passage. 1. A fluid supply device , comprising:a first constant displacement pump for forcing fluid from a fluid reservoir to a supply passage,a first electric motor for driving the first constant displacement pump,a second constant displacement pump for forcing fluid from the reservoir to the supply passage,a second electric motor for driving the second constant displacement pump,a flow rate detection device for detecting flow rate in the supply passage, anda control device for controlling the flow rate in the supply passage to follow a desired value thereof, by regulating rotational speeds of the first and second electric motors depending on a difference between the desired value and a detected value of flow rate in the supply passage.2. The fluid supply device according to claim 1 , whereinthe flow rate detection device includes a first pump flow rate sensor for detecting the flow rate at which the first constant displacement pump delivers fluid, a second pump flow rate sensor for detecting the flow rate at which the second constant displacement pump delivers fluid, and an adder for summing values of flow rate detected by the first and second pump flow rate sensors.3. A fluid supply device claim 1 , comprising:a first constant displacement pump for forcing fluid from a fluid reservoir to a first ...

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Номер записи: 19
28-11-2013 дата публикации

ELECTRO-HYDRAULIC VALVE POSITIONER

Номер: US20130315750A1
Автор: Gentry Kevin, Hayt Dustin, Longley Joseph Ky
Принадлежит: KIMRAY, INC.

The current invention relates to motor valves and actuators associated with such motor valves. More particularly, the current invention relates to an electro-hydraulic positioner for such actuators so that the valve can be opened, closed or partially opened. The invention also relates to a method for positioning an actuator for a motor valve. The method utilizes a hydraulic liquid. 1. An apparatus comprising: a first conduit;', 'a second conduit;', 'a pump having an inlet for receiving a hydraulic liquid from said first conduit and an outlet for discharging said hydraulic liquid to said second conduit;', 'a check valve in fluid flow communication with said outlet and said second conduit, said check valve prevents backflow from said second conduit to said second conduit;', 'an electromechanical valve in fluid flow communication with said first conduit and said second conduit and having a first position allowing fluid flow between said first conduit and said second conduit and a second position preventing fluid flow between said first conduit and said second conduit., 'an electro-hydraulic valve positioner comprising2. The apparatus of further comprising an electronic control unit which turns said pump on in response to a first signal claim 1 , turns said pump off in response to a second signal and switches said electro-mechanical valve from said first position to said second position in response to a third signal.3. The apparatus of wherein said electromechanical valve is a solenoid valve.4. The apparatus of further comprising a source of hydraulic liquid in fluid flow communication with said first conduit and wherein said hydraulic fluid is a hydraulic oil.5. The apparatus of further comprising a motor valve operationally connected to said electro-hydraulic valve positioner such that said motor valve is changed from a first position to a second position based on flow of hydraulic liquid between said first conduit and said second conduit.6. The apparatus of wherein ...

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Номер записи: 20
28-11-2013 дата публикации

PUMP UNIT

Номер: US20130315752A1
Автор: Blaser Georg
Принадлежит: GRUNDFOS MANAGEMENT A/S

A pumping set includes an electrical drive motor and electronic controller, wherein the controller is divided into two functional modules arranged on at least two separate circuit boards, of which a first functional module represents a supply part, which provides the input voltage for the second functional module, and wherein the second functional module exhibits engine electronics that are connected with stator coils of the drive motor to supply the latter with current. 117.-. (canceled)18162216222224. A pumping set comprising an electric drive motor and an electronic controller , wherein the controller is divided into two functional modules ( , ) arranged on at least two separate circuit boards , of which a first functional module () represents a supply part that provides an input voltage for the second functional module () , and wherein the second functional module () has engine electronics that are connected with stator coils () of the drive motor to supply the drive motor with current.191622. The pumping set according to claim 18 , wherein the supply part of the first functional module () provides an extra-low voltage as the input voltage for the second functional module ().2024. The pumping set according to claim 18 , wherein the engine electronics are designed to supply the stator coils () with extra-low voltage.2116223032. The pumping set according to claim 18 , wherein the first () and second () functional modules are connected to each other by an electrical plug-in connector ( claim 18 , ).2216. The pumping set according to claim 18 , wherein the first functional module () includes a transformer or switching power supply.23163422. The pumping set according to claim 18 , wherein the first functional module () includes at least one setting element () claim 18 , configured to set a speed of the drive motor claim 18 , and/or a sensor element claim 18 , which are signal-connected with the second functional module ().2422. The pumping set according to claim 18 , ...

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Номер записи: 21
19-12-2013 дата публикации

CONTROL ARRANGEMENT FOR CONTROLLING A PISTON PUMP UNIT FOR LIQUID CHROMATOGRAPHY

Номер: US20130336803A1
Автор: RUEGENBERG Gervin, Schloderer Richard, TUCHAN Werner
Принадлежит:

A control arrangement for controlling a piston pump unit for liquid chromatography, in particular high-performance liquid chromatography, is described. The piston pump unit has at least two piston-cylinder units which operate cyclically in a phase-offset manner and generate, at an outlet port, a predetermined flow of a liquid medium to be delivered. A system pressure is established at the outlet port, irrespective of an associated fluid load resistance. The control arrangement is configured to record the pressure in the cylinder volume of at least a first of the at least two piston-cylinder units. During a measurement phase of the compression phase of the first piston-cylinder unit or during a measurement phase of the decompression phase of the first piston-cylinder unit, the control arrangement stops the drive device for the first piston-cylinder unit for a predetermined time period and in the process records measurement data which characterize the time profile of the pressure. 1. A piston pump unit for liquid chromatography comprising:(a) at least two piston-cylinder units configured to generate, at an outlet port, a predetermined flow of a liquid medium at a system pressure, (i) control a drive device for the at least two piston-cylinder units,', '(ii) compress the liquid medium in a first cylinder of the at least two piston-cylinder units in a compression phase from a starting pressure to the system pressure,', '(iii) decompress the first cylinder of the at least two piston-cylinder units in a decompression phase,', '(iv) record pressure values as a function of time in a cylinder volume of at least a first of the at least two piston-cylinder units during a measurement phase,', '(v) stop the drive device for the first piston-cylinder unit for a predetermined time period during a measurement phase of a compression phase of the first piston-cylinder unit or during a measurement phase of the decompression phase of the first piston-cylinder unit;', '(vi) determine a ...

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Номер записи: 22
26-12-2013 дата публикации

Methods and Systems for Monitoring a Power Supply for a Fire Pump Motor

Номер: US20130343910A1
Автор: Rosenthal Harlan A., Stephens Douglas A.
Принадлежит: ASCO POWER TECHNOLOGIES, L.P.

Methods and systems for operating a fire pump controller are provided. An example method includes causing a power supply coupled to a an electric motor-driven water pump through a fire pump controller in a fire protection system to provide power to the water pump, and monitoring the performance of the power supply during the motor starting period by measuring the voltage and/or current of its output under motor load conditions. The method may also include providing visual indications, such as traces or starting signatures of motor power supply voltages and/or currents during the motor starting period for the purposes of observation and troubleshooting motor power supply and power train performance problems. 1. A method comprising:causing a power supply coupled to an electric motor-driven water pump in a fire protection system to provide power to the water pump;measuring a voltage and/or current of the motor power supply output;providing, by a computing device, a visual indication, such as a trace of motor power supply voltage and/or current output during a motor starting period.2. The method of claim 1 , wherein causing the power supply coupled to the water pump in the fire protection system to provide power to the water pump comprises causing the power supply to begin operation.3. The method of claim 1 , wherein measuring the voltage and/or current of the motor power supply output comprises measuring the voltage and/or current of the motor power supply output during a starting period of the power supply.4. The method of claim 1 , wherein providing the visual indication claim 1 , such as a trace of motor power supply voltage and/or current output comprises providing an indication of whether a voltage provided by the power supply is less than about 15 percent of a nominal operating voltage under starting conditions.5. The method of claim 1 , further comprising providing the visual indication claim 1 , such as a trace of motor power supply voltage and/or current ...

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Номер записи: 23
26-12-2013 дата публикации

OIL PUMP WITH SELECTABLE OUTLET PRESSURE

Номер: US20130343937A1
Автор: Greene Darrel F., Takamatsu-Unuvar Ken T., Williamson Matthew
Принадлежит: MAGNA POWERTRAIN INC.

An oil pressure relief valve for use in the oil pump lubrication system of an internal combustion engine is controlled by both oil pump outlet pressure and by pilot pressure from a pilot valve which is selectively applied by a control member, preferably a two-way valve that is operated by the engine control module. The pilot valve selectively supplies one of the oil pump outlet pressure or the engine gallery pressure to the control member which selectively supplies pilot valve pressure to the oil pump pressure relief valve which has a single piston. The pilot valve includes first and second pistons for selectively controlling back pressure from the pressure relief valve and for managing changes in oil pressure due to changes in the engine gallery to maintain a virtually constant pressure even as oil pump speed increases when the control member connects the pilot valve to the pressure relief valve resulting in a fuel economy benefit and improved control of the oil pump pressure. 1. (canceled)2. (canceled)3. (canceled)3. (canceled)4. (canceled)5. A pressure relief valve system for use in a fluid lubrication system in an engine , the pressure relief valve system comprising:a pressure relief valve including a housing having a bore having a piston and a spring received therein, the pressure relief valve further including an inlet port for admitting a fluid from a high pressure side of the fluid lubrication system into the bore to one side of the piston to move the piston against the force of the spring and an outlet port for expelling the fluid from the bore once the piston has been moved against the increasing spring force to put the inlet port in communication with the outlet port, the pressure relief valve further including a pilot valve pressure inlet port for admitting fluid into the bore to apply fluid pressure on the piston in a direction opposite the fluid pressure from the inlet port;a pilot valve including a pilot housing having a pilot bore having a pilot ...

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Номер записи: 24
09-01-2014 дата публикации

PUMP FACILITY FOR A HEARING DEVICE AND METHOD OF INFLATING AND DEFLATING AN EARMOLD MEMBER

Номер: US20140010674A1
Автор: GEBERT ANTON
Принадлежит:

A pump facility for an earmold of a hearing device communicates by way of a channel facility with a variable-volume element of the earmold. A medium can flow through the channel facility to the variable-volume element and away from the variable-volume element. A filling mechanism is embodied for pumping the medium through the channel facility to the variable-volume element. In addition a drainage mechanism is embodied for actively pumping and conveys the medium away from the variable-volume element through the channel facility. 1. A pump facility for an earmold of a hearing device , which comprises:a channel facility fluidically connectible with a variable-volume element of the earmold, enabling a medium to flow through said channel facility to and from the variable-volume element when the variable-volume element is fluidically connected to said channel facility;a filling mechanism configured for pumping and conveying the medium to the variable-volume element through said channel facility; anda drainage mechanism embodied for pumping and conveying the medium away from the variable-volume element through said channel facility.2. The pump facility according to claim 1 , which comprises a valve assembly configured to control or enable an inflow of the medium from said filling mechanism to the variable-volume element.3. The pump facility according to claim 1 , which comprises a valve assembly configured to control or enable an out-flow of the medium from the variable-volume element to an outlet.4. The pump facility according to claim 1 , which comprises a first valve assembly configured to control or enable an inflow of the medium from said filling mechanism to the variable-volume element and a second valve assembly configured to control or enable an out-flow of the medium from the variable-volume element to an outlet.5. The pump facility according to claim 4 , wherein each of said first valve assembly and said second valve assembly is controlled and/or enabled ...

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Номер записи: 25
16-01-2014 дата публикации

METERING SYSTEM

Номер: US20140017094A1
Автор: Ghodsi-Kameneh Hassan, Hahn Alexander
Принадлежит: EBM-PAPST ST. GEORGEN GMBH & CO. KG

A metering system for metering a liquid has an electric motor () for setting a desired feed rate by modifying the rotation speed of the electric motor. It furthermore has an eccentric drive (), drivable by said electric motor (), for a pump () that has two delivery directions. It also has a pump ring () made of an elastomeric material and a stationary ring () which is arranged relative to the pump ring () and to the eccentric drive () in such a way that a pump chamber (), extending in a circumferential direction, is formed between the stationary ring () and pump ring (), which chamber changes shape upon rotation of the electric motor () in order to deliver a liquid to be metered through the pump chamber (). A stationary seal () is provided in the pump chamber (), between two fluid ports. 130. A metering system for metering a liquid , which metering system () comprises:{'b': '32', 'an electric motor () for establishing a desired liquid feeding rate by modifying a rotation speed of the electric motor;'}{'b': 52', '56', '32', '53, 'an eccentric drive (, ), drivable by said electric motor (), for a pump () that has two delivery directions;'}{'b': '70', 'a stationary ring ();'}{'b': '62', 'a pump ring () made of an elastomeric material,'}{'b': 62', '70, 'which pump ring () is nonrotatable relative to the stationary ring ();'}{'b': 70', '62', '52', '56', '120', '74', '53', '70', '62', '32', '120', '142', '120', '124', '122', '122', '124, 'the stationary ring () being arranged, relative to the pump ring () and to the eccentric drive (, ), in such a way that a pump chamber () extending in a circumferential direction, viewed in a section extending perpendicular to the rotation axis () of the pump (), is formed between the stationary ring () and pump ring (), which chamber changes shape upon rotation of the electric motor () in order to deliver the liquid to be metered through the pump chamber (), a stationary seal () being provided in said pump chamber () between a suction ...

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Номер записи: 26
16-01-2014 дата публикации

STRAIN GAUGE PUMP CONTROL SWITCH

Номер: US20140017095A1
Автор: Barker Casey, JR. John R., Kochan
Принадлежит: Metropolitan Industries, Inc.

A control switch incorporates a solid state transducer, a strain gauge. The transducer responds to a local environmental condition, such as fluid level, or pressure and exhibits a parameter change which can be detected as an electrical output. Control circuits coupled to the transducer can sense the parameter change and switch a source of electrical energy to a load in response thereto. 121-. (canceled)22. A control system for an electric motor comprising:a watertight housing;a strain gauge carried in the housing;a vent tube with first and second ends, one end is coupled to the housing and the other end extends away from the housing;control circuits coupled to the strain gauge;a relay and an electronic switch coupled to and independently controllable by the control circuits;an electrical connector for a motor, the other end of the vent tube is located adjacent to the electrical connector as is an output from the relay and the electronic switch with the control circuits sequentially placing the switch into a conducting state and then changing a state of the relay.23. A system as in where the switch and the relay provide an electrical conducting path to the connector.24. A system as in where the control circuits sequentially place the switch into a conducting state and then change the state of the relay to provide the electrical conducing path to the connector in response to at least one electrical signal from the strain gauge.25. A system as in which includes a bridge circuit claim 22 , at least one branch of the bridge circuit is coupled to the bridge circuit.26. A system as in where the control circuits include a programmable processor and associated control software stored on a computer readable medium.27. A system as in which includes first software that monitors at least one electrical signal from the strain gauge.28. A system as in which includes second software claim 27 , responsive to at least one electrical signal from the strain gauge that carries out a ...

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Номер записи: 27
20-02-2014 дата публикации

Pump Unit for a High-Pressure Pump

Номер: US20140050597A1
Автор: Anatoliy Lyubar, Dancia Stegemann, Michael Absmeier, Xaver Gebhardt
Принадлежит: Continental Automotive GmbH

A pump unit includes a pump housing having a low-pressure inlet and a high-pressure outlet. A working medium is fed via the low-pressure inlet to a working chamber formed in the pump housing. The working medium is discharged from the working chamber via the high-pressure outlet. The pump unit also includes a pump piston channel formed in the pump housing and having a longitudinal axis. The pump unit has a first pump piston arranged movably along the longitudinal axis in the pump piston channel and coupled hydraulically to the working chamber. The pump unit also has a second pump piston arranged movably along the longitudinal axis in the pump piston channel and coupled hydraulically via a compensation volume to the first pump piston, wherein the compensation volume is coupled hydraulically to a compensation unit configured to adapt the compensation volume based on a pressure in the working chamber.

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Номер записи: 28
13-03-2014 дата публикации

CONTROL SYSTEM AND METHOD FOR RECIPROCATING COMPRESSORS

Номер: US20140072451A1
Автор: Nazario Filipe Guolo, Schwarz Marcos Guilherme
Принадлежит: WHIRLPOOL S.A.

The present invention relates to a control system for hermetic cooling compressor, which includes a reciprocating compressor () and an electronic control () for the reciprocating compressor (), the electronic control () being configured for, after commanding the turning off of the reciprocating compressor (), detecting whether the turn velocity () of the turning axle () is below a predefined velocity level, and then applying a braking torque () that causes deceleration of the turning axle () before completing the next turn of the turning axle (), in case the turn velocity () detected is below the velocity level (). 118.-. (canceled)193. A reciprocating compressor () comprising:{'b': 12', '8', '9, 'at least one mechanical assembly () comprising at least one compression mechanism () and one motor (); and'}{'b': '2', 'at least one electronic control ();'}{'b': 2', '23', '8', '36', '12', '23', '34', '36', '35, 'wherein the electronic control () is configured to detect a turn velocity () of the compression mechanism () and to apply a braking torque () to the mechanical assembly () during the stopping process of the compressor after detecting that the turn velocity () is below a predefined velocity value (), the braking torque () being initiated at a next moment () after a compression stroke has been completed; and'}{'b': 36', '23', '23', '8, 'the breaking torque () being configured for gradual deceleration of the turn velocity () such that the turn velocity () of the compression mechanism () has zero value at the moment when the new compression stroke is about to begin.'}2028834. A reciprocating compressor according to claim 19 , wherein the electronic control () detects the period that the compression mechanism () needs to carry out its movement and compares such a period with a maximum reference time claim 19 , the maximum reference time being related with the period which the compression mechanism () needs to carry out its movement at the predefined velocity value (). ...

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Номер записи: 29
01-01-2015 дата публикации

LUBRICATION APPARATUS OF HIGH PRESSURE PUMP FOR COMMON RAIL SYSTEM

Номер: US20150004012A1
Автор: Hwang Chang Sun, Kwun Sun Dong, You Sung Il
Принадлежит: HYUNDAI MOTOR COMPANY

A lubrication apparatus of a high pressure pump for a common rail system is configured such that a sufficient amount of lubrication fuel can be supplied from a low pressure pump to the frictional junction between a roller and a shoe within a short period of time, thereby efficiently improving the lubrication performance of the frictional junction. 1. A lubrication apparatus of a high pressure pump for a common rail system , comprising:a first lubrication channel connecting a low pressure pump to a shaft chamber formed in a pump housing of the high pressure pump;a third lubrication channel formed through the pump housing so as to be connected to the first lubrication channel and to be open to a location in which a shoe is installed; anda support lubrication groove formed in the shoe such that the support lubrication groove is open to an outer surface of the shoe, in which a first end of the support lubrication groove is connected to the third lubrication channel and a second end of the support lubrication groove is connected to a frictional junction in which a roller and the shoe come into contact with each other.2. The lubrication apparatus of the high pressure pump for the common rail system as set forth in claim 1 , further comprising:a check valve installed in the third lubrication channel and functioning to allow a flow of fuel from the first lubrication channel to the third lubrication channel and to prevent a reverse flow of the fuel from the third lubrication channel to the first lubrication channel.3. The lubrication apparatus of the high pressure pump for the common rail system as set forth in claim 1 , wherein the support lubrication groove comprises:a first support groove connected to the third lubrication channel and extending in a lengthwise direction of the shoe; anda second support groove connected to the first support groove and being open to the frictional junction.4. The lubrication apparatus of the high pressure pump for the common rail system as ...

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Номер записи: 30
04-01-2018 дата публикации

Safety Vacuum Release System

Номер: US20180003181A1
Автор: Berthelsen Lars Hoffmann, JR. Robert W., Stiles
Принадлежит:

Some embodiments of the invention provide a pumping system for at least one aquatic application. The pumping system includes a pump, a motor coupled to the pump, a user interface associated with the pump designed to receive input instructions from a user, and a controller in communication with the motor. The controller determines a power parameter associated with the motor and compares the power parameter to a predetermined threshold value. The controller triggers a safety vacuum release system based on the comparison of the power parameter and the threshold value. 1. A pumping system for at least one aquatic application , the pumping system comprising:a pump;a motor coupled to the pump;a user interface associated with the pump, the user interface configured to receive input instructions from a user;and the controller determining a power parameter associated with the motor,', 'the controller comparing the power parameter to a predetermined threshold value, and', 'the controller triggering a safety vacuum release system based on the comparison of the power parameter and the threshold value;', 'wherein the power parameter is an absolute power consumption value of the motor., 'a controller in communication with the motor,'}2. The pumping system of claim 1 , wherein the power parameter is based only on measurements and calculations related to the power consumption of the motor.3. The pumping system of claim 1 , wherein the controller operates the pump according to at least one schedule.4. The pumping system of further including an external controller configured to allow operation of the system from a remote location.5. The pumping system of claim 1 , wherein the controller will automatically restart the pump after an obstructed inlet has been detected and the pump has been stopped.6. The pumping system of further including a counter designed to reduce the number of nuisance trips.7. The pumping system of claim 1 , wherein the predetermined threshold value is determined ...

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Номер записи: 31
02-01-2020 дата публикации

Hydrostatic Axial Piston Pump for a Hydrostatic Traction Drive

Номер: US20200003206A1
Автор: Herrmann Ronny, Lenzgeiger Ulrich, Mueller Matthias, Mutschler Steffen
Принадлежит:

A hydrostatic axial piston pump for a hydrostatic traction drive has an adjusting unit for adjusting the stroke volume. The adjusting unit has an actuating cylinder with two counteracting actuating pressure chambers. An actuating pressure can be set in each actuating pressure chamber via a separate pressure reducing valve, the said actuating pressure depending on and preferably being proportional to a current intensity on a respective solenoid of the respective pressure reducing valve. The two current intensities can be calculated via an electronic control unit on a model basis as a function of a speed and of an operating pressure of the axial piston pump and as a function of an operating element for a driver's request, e.g. an accelerator pedal. 1. A hydrostatic axial piston pump for a hydrostatic traction drive , the axial piston pump comprising:an adjusting unit configured to adjust a stroke volume, the adjusting unit including an actuating cylinder defining a first actuating pressure chamber in which a first actuating pressure is set via a first pressure reducing valve, the first actuating pressure depending on a first current intensity applied to a first solenoid of the first pressure reducing valve; andan electronic control unit configured to determine the first current intensity based on an actual rotational speed, an operating pressure of the axial piston pump, and an operating element that receives a driver's request.2. The hydrostatic axial piston pump according to claim 1 , wherein the actual rotational speed and the first actuating pressure acts in a first direction of an increase in the stroke volume claim 1 , while the operating pressure acts in a second direction of a reduction in the stroke volume.3. The hydrostatic axial piston pump according to claim 1 , wherein:the hydrostatic piston pump is configured to be operated both as a motor and as a pump,the actuating cylinder defines a second actuating pressure chamber, which acts counter to the first ...

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Номер записи: 32
02-01-2020 дата публикации

HEAT CYCLE SYSTEM

Номер: US20200003469A1
Автор: IPPONMATSU Masamichi, KAJITANI Shigeo, Okamoto Hidekazu, OTSUKA Tetsuo, UENO Katsuya
Принадлежит: AGC Inc.

To provide a heat cycle system with high durability, which employs a working fluid for heat cycle containing trifluoroethylene having a low global warming potential. 1. A heat cycle system , comprising a circulation path in which a working fluid for heat cycle containing trifluoroethylene is circulated from a compressor via a condenser , an expansion valve and an evaporator to the compressor ,wherein the compressor has in its electrical circuit a current-limiting apparatus capable of limiting the current within 6 milliseconds after the heat cycle system enters into an abnormal operation state.2. The heat cycle system according to claim 1 , wherein the current-limiting apparatus is capable of limiting the current within 1 millisecond after the heat cycle system enters into an abnormal operation state.3. The heat cycle system according to claim 1 , wherein the current limiting by the current-limiting apparatus is conducted by terminating a current.4. The heat cycle system according to claim 1 , wherein the current limiting is conducted by suppressing an energy which the working fluid for heat cycle receives from a spark energy generated in the heat cycle system to be 200 J or lower.5. The heat cycle system according to claim 1 , wherein the current-limiting apparatus is at least one member selected from a semiconductor protecting fuse claim 1 , a fast-acting fuse claim 1 , a fast-blow fuse and a current-limiting fuse.6. The heat cycle system according to claim 1 , wherein the working fluid for heat cycle contains trifluoroethylene in an amount of larger than 50 mass %.7. The heat cycle system according to claim 6 , wherein the working fluid for heat cycle contains trifluoroethylene in an amount of larger than 60 mass %.8. The heat cycle system according to claim 6 , wherein the working fluid for heat cycle contains from 60 to 80 mass % of trifluoroethylene and from 20 to 40 mass % of at least one of difluoromethane and 2 claim 6 ,3 claim 6 ,3 claim 6 ,3-tetrafluoro-1- ...

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Номер записи: 33
01-01-2015 дата публикации

Pump Controller System and Method

Номер: US20150005957A1
Автор: Robert M. Koehl
Принадлежит: Pentair Flow Technologies LLC

A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.

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Номер записи: 34
27-01-2022 дата публикации

COMPRESSOR

Номер: US20220025877A1
Автор: HATA Shigeru, SAKATA Kohei
Принадлежит:

A compressor includes: a plurality of terminals; a terminal cover protecting the plurality of terminals; a temperature sensor configured to detect a temperature of a shell; and a cover having a flat portion disposed around the plurality of terminals, and a sensor protection portion covering the temperature sensor, the sensor protection portion being integrally formed with the flat portion to extend from the flat portion. The terminal cover is attached to cover the flat portion of the cover in a state in which the temperature sensor disposed on the shell is covered by the sensor protection portion of the cover. Thus, it is possible to prevent a lead wire of the temperature sensor from being accidentally cut when the terminal cover is attached. 1. A compressor comprising:a plurality of terminals;a terminal cover protecting the plurality of terminals;a temperature sensor configured to detect a temperature of a shell; and a flat portion disposed around the plurality of terminals, and', 'a sensor protection portion covering the temperature sensor, the sensor protection portion being integrally formed with the flat portion to extend from the flat portion,, 'a cover having'}wherein the terminal cover is attached to cover the flat portion of the cover in a state in which the temperature sensor disposed on the shell is covered by the sensor protection portion of the cover,whereinthe sensor protection portion covers and is not in contact with the temperature sensor and a vicinity of the temperature sensor.2. (canceled)3. A compressor comprising:a plurality of terminals;a terminal cover protecting the plurality of terminals;a temperature sensor configured to detect a temperature of a shell; and a flat portion disposed around the plurality of terminals, and', 'a sensor protection portion covering the temperature sensor, the sensor protection portion being integrally formed with the flat portion to extend from the flat portion,, 'a cover having'}wherein the terminal cover is ...

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Номер записи: 35
11-01-2018 дата публикации

Direct-injection, supercharged internal combustion engine with high-pressure fuel pump, and method for operating an internal combustion engine of said type

Номер: US20180010543A1
Автор: Jan Mehring, Klemens Grieser, Oliver Berkemeier
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A direct-injection, supercharged internal combustion engine having at least one cylinder, in which each cylinder is equipped with a direct injection apparatus, a fuel supply system comprising a high-pressure side and a low-pressure side, and a high-pressure piston pump comprising a piston displaceable in translational fashion between a bottom dead center and a top dead center of a pressure chamber of variable volume. The displaceable piston jointly delimits the pressure chamber with variable volume in such a way that a displacement of the piston causes a change in the volume of the pressure chamber via actuation of least one movable actuation element.

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Номер записи: 36
28-01-2016 дата публикации

HIGH PRESSURE WATER PUMP

Номер: US20160023339A1
Автор: Huang Jin-Quan, Liu Gui-Wen, Yang Ming-Jun
Принадлежит:

The invention relates to a high pressure water pump and a steam powered nailing gun having the high pressure water pump. In certain embodiments, high pressure water pump includes: an upper pump body, a lower pump body, a water discharge valve, a water intake valve, a plunger, a guide sleeve, a hammering cap, an adjustment knob, and an evacuation valve. Both upper and lower pump body are connected by connecting bolts. A sealing ring is disposed between upper and lower pump body and a sealing element is disposed between the upper pump body and plunger. Plunger is sheathed in upper pump body. The hammering cap is threadedly connected to the plunger. The adjustment knob is connected to an upper end of upper pump body. The hammering cap is moveably connected to the adjustment knob through the plunger. A plunger reset spring is disposed between hammering cap and adjustment knob. 1. A high pressure water pump , comprising:an upper pump body;a lower pump body;a water discharge valve;a water intake valve;a plunger;a guide sleeve;a hammering cap;an adjustment knob; andan evacuation valve,wherein the upper pump body and the lower pump body are connected by a plurality of connecting bolts, a sealing ring is disposed between the upper pump body and the lower pump body, a sealing element is disposed between the upper pump body and the plunger, the plunger is sheathed in the upper pump body, the hammering cap is connected to an upper end of the plunger by threads, the adjustment knob is connected to an upper end of the upper pump body, the hammering cap is moveably connected to the adjustment knob through the plunger, and a plunger reset spring is disposed between the hammering cap and the adjustment knob.2. The high pressure water pump according to claim 1 , wherein the water intake valve claim 1 , the water discharge valve claim 1 , and the evacuation valve are disposed along the circumference of the lower pump body claim 1 , and form a “Y” shaped three distribution channels on ...

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Номер записи: 37
28-01-2016 дата публикации

Variable Speed Drive System

Номер: US20160025192A1
Автор: Robert C. Kennedy
Принадлежит: Individual

An electronically controlled variable speed mechanical drive to be used in high power applications where using a direct drive motor is not feasible due to weight and size constraints. The variable speed drive components convert an externally driven fixed displacement pump into a variable displacement pump by electronically setting the pump speed to meet flow demands. A single stage pump and a multi-stage pump are so converted, according to the present disclosure.

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Номер записи: 38
24-04-2014 дата публикации

FLUID PUMP

Номер: US20140112812A1
Автор: Takemi Yukihiko
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

The present invention inhibits suction of dust and moisture into a drive chamber for driving a piston of a fluid pump while reducing drive load through feeding/discharging of fluid to/from the drive chamber. In the interior of a cylinder, a pressure increasing/decreasing chamber is formed between a valve unit on the cylinder head side and the piston. On the opposite side of the pressure increasing/decreasing chamber, the drive chamber is disposed. There are provided a ventilation path for communicating the drive chamber and the outside space, a fluid path connected to the feeding/discharging space of the valve unit, a merging space where the fluid path is merged with the ventilation path midway, and a fluid filter provided in the merging space. 1. A fluid pump comprising:a cylinder;a piston mounted inside the cylinder to be moved back and forth, the piston partitioning the inside of the cylinder between a pressure increasing/decreasing chamber on the side of the cylinder head and a drive chamber opposite the pressure increasing/decreasing chamber;a valve unit having a control space for causing fluid of the pressure increasing/decreasing chamber to act on a pressurizing/depressurizing object and a feeding/discharging space for feeding/discharging fluid between the pressure increasing/decreasing chamber and the outside space, the valve unit being provided in the cylinder head so as to control flow of the fluid to the pressure increasing/decreasing chamber at the time of a reciprocal movement of the piston:a path block mounted to the cylinder;a ventilation path communicating the drive chamber and the outside space with each other via the path block;a fluid path connected to the feeding/discharging space and the path block so as to be merged with the ventilation path in a merging space inside the path block;a fluid filter mounted in the merging space; andan opening defined in a bottom wall of the path block for establishing communication between the interior space of ...

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Номер записи: 39
29-01-2015 дата публикации

Methods and systems for real-time monitoring and optimizing the performance of reciprocating compressors

Номер: US20150030465A1
Автор: Bandar Naghi, Michael Lloyd Vannarsdall, Raghuram Puthali Ramesh
Принадлежит: Chevron USA Inc

Disclosed are systems and methods for monitoring the performance of a plurality of reciprocating compressors having components made by at least two different manufacturers. A source of reciprocating compressor data associated with a plurality of reciprocating compressors and a source of reciprocating compressor component specifications associated with the plurality of reciprocating compressors are in communication with a computer processor. The computer processor obtains at least one measured value from the source of reciprocating compressor data and at least one specification value from the source of reciprocating compressor component specifications, performs at least one calculation using the at least one measured value and the at least one specification value to calculate at least one calculated performance value, compares the at least one calculated value to a user-defined calculated value limit selected from the group consisting of an upper alarm limit, a lower alarm limit, an upper deviation limit, a lower deviation limit, a maximum value, a minimum value and combinations thereof, and initiates an alert to a user of any calculated value exceeding the user-defined calculated value limit every user-defined period of time.

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Номер записи: 40
04-02-2016 дата публикации

Device for Conserving Power in a Piston Compressor

Номер: US20160032917A1
Автор: MELLAR Joerg
Принадлежит:

A device for conserving power is provided in a piston compressor, in particular a piston-compressor for generating compressed air in a motor vehicle and having a piston delimiting a compression chamber for generating compressed air, which, originating from the ambient environment, arrives in the compression chamber for compression by way of at least one suction connection formed on a cylinder head cover and an intake valve array arranged on a valve plate. For the purpose of conserving power, a pressure-dependently acting idling device is provided for the intake valve array having a dedicated suction lamella, which can be rotated by an actuator between a working position overlapping at least one suction opening and an idling position unblocking, at least in part, the at least one suction opening. The actuator actuates the suction lamella in a coordinated manner such that in the idling position, the suction lamella unblocks the at least one suction opening in the valve plate, at least partially, while simultaneously blocking adjacent pressure valve cross-sections, at least partially, and locks the suction connection at the cylinder head cover by a slider in order to form an increased dead space in the area of the cylinder head. 1. A power conservation device in a piston compressor that generates compressed air for a vehicle , the piston compressor being equipped with a piston delimiting a compression chamber for generating compressed air which , originating from an ambient environment enters the compression chamber by way of at least one suction port formed on a cylinder head cover and an intake valve array arranged on a valve plate , the power conservation device comprising:a pressure-dependent acting idling device configured for the intake valve array, the pressure-dependent acting idling device having an associated suction lamella; andan actuator configured to rotate the suction lamella between a working position overlapping at least one suction opening and an ...

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Номер записи: 41
01-05-2014 дата публикации

PRESSURE RELIEF FOR ADHESIVE DISPENSING SYSTEM

Номер: US20140117047A1
Автор: Ross Daniel P., Studt Nicholas K., Theisen Matthew R., Tix Joseph E.
Принадлежит: GRACO MINNESOTA INC.

A hot melt system is described which includes a container of hot melt pellets, a melter, a feed system, a pump, and a dispensing system. A pressure relief system is built around the pump, which may redirect liquefied adhesive from the pump outlet to the pump inlet. 1. A hot melt system comprising:a container for storing hot melt pellets;a melter capable of heating hot melt pellets into a liquid;a feed system for transporting hot melt pellets from the container to the melter;a dispensing system for administering the liquid; an inlet operatively connected to the melter; and', 'an outlet operatively connected to the dispensing system; and, 'a pump for pressurizing the liquid between the melter and the dispensing system, the pump includinga pressure relief system capable of rerouting liquefied adhesive from the pump outlet to the pump inlet.2. The hot melt system of claim 1 , further comprising an air motor that powers the pump.3. The hot melt system of claim 1 , and further comprising a pressure relief valve in the pressure relief system claim 1 , the pressure relief valve capable of being opened or closed to selectively allow liquefied adhesive to pass through a pressure relief porting.4. The hot melt system of claim 3 , wherein the pressure relief valve is kept closed when pressurized air is being supplied to an air motor.5. The hot melt system of claim 1 , wherein the pressure relief system includes pressure relief porting connected to the pump inlet at a first end and connected to the pump outlet at a second end.6. The hot melt system of claim 1 , wherein the pump outlet is connected to the dispensing system with a flexible hose.7. The hot melt system of claim 1 , wherein the pump outlet and the pressure relief system are directly connected to the dispensing system.8. The hot melt system of claim 7 , wherein the pump claim 7 , the pressure relief system claim 7 , and the dispensing system are all contained within an integrated block.9. A method for reducing char in ...

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Номер записи: 42
01-05-2014 дата публикации

Battery Backup Sump Pump Systems and Methods

Номер: US20140119946A1
Автор: Ambrose Jeffrey C., Bishop Michael B., Boese Thomas G., Emerson John, Mazza Joseph J., Paton David E.
Принадлежит:

Embodiments of the invention provide battery backup sump pump (BBU) systems and methods. The BBU systems and methods can be used with a battery and an alternating current power source to charge the battery. The BBU systems and methods can be adapted to be a portable power source for AC and DC external devices. 1. A backup sump pump system comprising:a portable housing including a first half and a second half, and one of the first half and the second half including a control panel;control circuitry integrated into the portable housing, the control circuitry to be powered by a line power and when the line power is not available, the control circuitry to be powered by a battery power, the control circuitry connected to the control panel and including a pressure transducer;a backup sump pump connected to the control circuitry; anda fluid level sensor connected to the pressure transducer, the pressure transducer to measure a pressure in the fluid level sensor, and based on the measured pressure, the control circuitry to adjust the speed of the backup sump pump.2. The system of claim 1 , wherein the backup sump pump is an AC backup sump pump.3. The system of claim 1 , wherein the backup sump pump is a DC backup sump pump.4. The system of claim 1 , and further comprising a wireless controller connected to the control circuitry claim 1 , the wireless controller for transmitting and receiving data wirelessly for remote monitoring.5. The system of claim 1 , wherein the control circuitry is configured to adjust the speed of the backup sump pump using at least two selectable voltages.6. The system of claim 1 , and further comprising a contact sensor connected to the control circuitry.7. The system of claim 1 , wherein one of the first half and the second half including a heat sink.8. The system of claim 1 , wherein the pressure transducer substantially continuously measures the pressure in the fluid level sensor claim 1 , and based on a measured pressure change claim 1 , the ...

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Номер записи: 43
01-05-2014 дата публикации

HYDRAULIC PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION

Номер: US20140119948A1
Автор: HWANG JIN YOUNG, Jo Se Hwan, Wi Taehwan
Принадлежит: HYUNDAI MOTOR COMPANY

A hydraulic pressure supply system of an automatic transmission for a vehicle may include a low-pressure hydraulic pump driven by an electric motor, generating low hydraulic pressure using oil stored in an oil pan, and supplying the low hydraulic pressure to a low pressure portion and a cooler, and a high-pressure hydraulic pump driven by the electric motor, increasing a portion of the low hydraulic pressure to high hydraulic pressure, and supplying the high hydraulic pressure to a high pressure portion through a high-pressure line fluid-connecting the high-pressure hydraulic pump to the high pressure portion, wherein a pressure sensor for detecting the low hydraulic pressure supplied to the cooler may be disposed at an input side of the cooler, and a rotation speed of the electric motor may be controlled based on the low hydraulic pressure detected by the pressure sensor. 1. A hydraulic pressure supply system of an automatic transmission for a vehicle comprising:a low-pressure hydraulic pump driven by an electric motor, generating low hydraulic pressure using oil stored in an oil pan, and supplying the low hydraulic pressure to a low pressure portion and a cooler; anda high-pressure hydraulic pump driven by the electric motor, increasing a portion of the low hydraulic pressure to high hydraulic pressure, and supplying the high hydraulic pressure to a high pressure portion through a high-pressure line fluid-connecting the high-pressure hydraulic pump to the high pressure portion,wherein a pressure sensor for detecting the low hydraulic pressure supplied to the cooler is disposed at an input side of the cooler, and a rotation speed of the electric motor is controlled based on the low hydraulic pressure detected by the pressure sensor.2. The hydraulic pressure supply system of claim 1 , wherein the low-pressure hydraulic pump and the high-pressure hydraulic pump are connected to each other by one shaft and are driven by the electric motor.3. The hydraulic pressure ...

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Номер записи: 44
09-02-2017 дата публикации

PUMP ACTUATOR AND METHOD FOR PUMP OPERATION

Номер: US20170037839A1
Автор: MAGUIRE Stephen B.
Принадлежит:

Method and apparatus for controlling a moveable pumping diaphragm and a liquid color diaphragm pump, including a housing, a movable pin slidably residing within the housing, a potentiometer connected to and residing within the housing for sensing movement of the pin, riding against the diaphragm of the pump and a spring for biasing the pin against the diaphragm. 1) A method for operating a pump having a movable pumping member and a pumping chamber , comprising:a) positioning a movable reciprocable member in contact with the pumping member to move reciprocally in concert with the pumping member;b) sensing position of the reciprocable member and producing signals indicative thereof;c) periodically applying force to the pumping member to move the pumping member and thereby effectuate pumping of fluid from the chamber;d) using the signals to regulate frequency of force application to the pumping member to achieve a preselected rate of output from the pump.2) The method of further comprising:a) recording the signals at the extremities of reciprocable member travel;b) using those signals and known length of reciprocable member travel to determine location of the reciproable member based on signal received at a given time;c) adjusting the frequency of application of force to the pumping member according to the location of the reciprocable member to maintain a desired output from the pump.3) The method of wherein the step of using those signals and known length of reciprocable member travel to determine location of the reciproable member based on signal received at a given time further includes determining the relationship between duration of force application to the pumping member and pumping member displacement.4) The method of wherein the pumping member is a diaphragm.5) The method of wherein the sensing is performed by a potentiometer.6) The method of wherein the force is pneumatically applied.7) The method of wherein the pumping chamber is air-tight.8) The method of ...

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Номер записи: 45
08-02-2018 дата публикации

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

Номер: US20180038365A1
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 claim 2 , 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 end of stroke ...

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Номер записи: 46
12-02-2015 дата публикации

Pump Control System Having Emergency Run Mode

Номер: US20150044060A1
Автор: JR. John R., Kochan
Принадлежит:

A pump control system receives inputs from a low level fluid level sensor and a high level fluid level sensor. Based on inputs from the sensors, and in response to sensed trouble conditions, duplex pumping or pump specific simplex operation is restricted based on past and present pump current draws. 1. A pump controller comprising:control circuits, the control circuits include first and second fluid level sensor input ports; andfirst and second motor output ports coupled to the control circuitsat least one motor current sensor coupled between at least one motor output port and the control circuits, whereby the control circuits monitor at least one motor current and, responsive there to, adjust a motor drive process.2. A controller as in wherein the control circuits switch output electrical energy between output ports while monitoring motor current.3. A controller as in wherein the motor drive process includes one of duplex pumping or simplex pumping.4. A controller as in wherein duplex pumping claim 1 , or pump specific simplex operation is restricted based on past and present current draws5. A controller as in which includes first and second fluid level sensors.6. A system comprising:a multi-mode pump controller;at least two pumps coupled to the controller;a first water level sensor coupled to the controller;a second water level sensor coupled to the controller;wherein the controller operating in one mode and in response to a detected condition energizes both pumps simultaneously and, when one of the sensors detects an absence of water, switches to a simplex alternating mode of operation.7. A system as in which includes at least one pump current sensor wherein the controller adjusts a pumping sequence in real-time in response to signals from the current sensor.8. A system as in where in response to sensed currents claim 7 , the controller restricts duplex pumping.9. A system as in wherein the detected condition includes one of a level sensor failure claim 8 , or ...

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Номер записи: 47
07-02-2019 дата публикации

Compressor Having an Energy Saving Apparatus, and Method for Relieving the Compressor

Номер: US20190040855A1
Автор: AMIOT Frederic, MARESCOT Jean-Baptiste, MELLAR Joerg
Принадлежит:

Compressor for generating compressed air for a commercial vehicle, having a housing with a piston chamber in a crankcase and a dead space which is configured at least in the cylinder head. The compressor has a valve device with a valve element which has an actuating section and a shut-off body for separating the dead space from the piston chamber, wherein the shut-off body can be lifted up from a valve seat in the direction of the piston chamber in order to open the valve device. The valve element is configured in one piece with the actuating section. 1. A compressor for generating compressed air for a utility vehicle , comprising:a housing with a piston space in a crankcase and with a dead space which is formed at least partially in a cylinder head of the compressor;a valve device with a valve element which has an actuating section and a shut-off body for separating the dead space from the piston space, wherein, in order to open the valve device, the shut-off body is liftable off, in the direction of the piston space, from a valve seat formed on a valve plate,whereinthe valve element is formed in one piece with the actuating section, and the valve plate is configured such that the valve element with the actuating section can be led through said valve plate in the direction of the cylinder head until the shut-off body is arranged on the valve seat and the actuating section is arranged in the cylinder head.2. The compressor as claimed in claim 1 , whereinthe valve element is mounted in a valve space of the cylinder head so as to be movable along the axis of the valve element, andthe valve space is delimited on a side averted from the piston space by the cylinder head.3. The compressor as claimed in claim 1 , whereinthe valve element is mounted in a valve space of the cylinder head so as to be movable along the axis of the valve element, andthe valve space is delimited on a side averted from the piston space by an intermediate plate.4. The compressor as claimed in ...

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Номер записи: 48
18-02-2021 дата публикации

Variable-capacity compressor control valve

Номер: US20210048009A1
Автор: Kenki SHIMADA, Masaharu Itoh, Shintaro Tano, Takashi Sakamoto, Yoshiyuki Kume
Принадлежит: Fujikoki Corp

A variable-capacity compressor control valve that can efficiently cancel the influence of the refrigerant pressure acting on a main valve element and avoid increase in complexity of the structure and size of the control valve is provided. A pressure equalizing passage is provided which is adapted to guide a suction pressure Ps acting on the upper end of a main valve element to a Ps introduction chamber provided at the lower end of the main valve element so that the suction pressure Ps acts on the lower end of the main valve element. When an electromagnetic actuator or a solenoid portion thereof is not supplied with current i.e., when a valve orifice is fully open, the introduction of a pressure Pc in a crank chamber from Pc inlet/outlet ports into the Ps introduction chamber is stopped, and the suction pressure Ps is introduced into the Ps introduction chamber via the pressure equalizing passage so that the suction pressure Ps acts on the upper and lower ends of the main valve element.

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Номер записи: 49
18-02-2021 дата публикации

CAPACITY CONTROL VALVE

Номер: US20210048017A1
Автор: Fukudome Kohei, KURIHARA Daichi, SHIRAFUJI Keigo
Принадлежит:

A capacity control valve () for controlling a flow rate or pressure of a variable capacity compressor according to a valve opening degree of a valve section includes: a valve main body () having a first valve chamber (), a second valve chamber () and an interior space (); a valve body () having an intermediate communication passage () for allowing communication between the first valve chamber and the interior space, a first valve part () arranged in the first valve chamber, a second valve part () for opening and closing communication between the interior space and the second valve chamber, and a shaft part () arranged in the interior space; a solenoid (); a pressure-sensitive body () arranged in the interior space; and an auxiliary communication part () which is arranged in the interior space and which allows communication between the interior space and the intermediate communication passage. 1. A capacity control valve for controlling a flow rate or pressure according to a valve opening degree of a valve section , comprising:a valve main body having an interior space communicating with a third communication passage through which a fluid at a control pressure passes, a second valve chamber communicating with a second communication passage through which a fluid at discharge pressure passes and having a valve hole communicating with the interior space and a second valve seat arranged in the valve hole, and a third valve chamber communicating with a first communication passage through which a fluid at a suction pressure passes and having a first valve seat;a valve body having an intermediate communication passage communicating with the interior space and the first communication passage, a second valve part for opening and closing the valve hole by separating from and making contact with the second valve seat, a first valve part which performs opening/closing action in reverse association with the second valve part and which opens and closes communication between the ...

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Номер записи: 50
06-02-2020 дата публикации

Pump Controller System and Method

Номер: US20200042024A1
Автор: Koehl Robert M.
Принадлежит:

A method and apparatus for a pump control system. One or more embodiments include a controller communicatively coupled to one or both of a pump and a motor connected to the pump. A device is connected to the controller and configured to connect to a computer network, the device enabling the controller to electronically send, via the computer network to a remote device connected to the computer network, data comprising operational parameters associated with one or both of the pump and the motor. 1. A pump control system comprising:a controller communicatively coupled to one or both of a pump and a motor connected to the pump, the controller comprising memory and one or more processors that read the memory to monitor and control operations of one or both of the motor and the pump; anda device connected to the controller and configured to connect to a computer network, the device enabling the controller to electronically send, via the computer network to a remote device connected to the computer network, data comprising operational parameters associated with one or both of the pump and the motor.2. The pump control system of claim 1 , wherein the device comprises peripheral equipment for network communications.3. The pump control system of claim 1 , wherein the computer network is the internet.4. The pump control system of claim 3 , wherein the remote device is a monitoring station and the controller sending the data to the monitoring station enables the monitoring station to monitor one or more of the operations of the motor and the pump.5. The pump control system of claim 1 , wherein the controller is programmed to receive a control command from the remote device via the computer network and to execute the control command to perform one or more control functions associated with one or more of the controller claim 1 , the pump claim 1 , and the motor.6. The pump control system of claim 5 , wherein the memory stores a plurality of parameters and the one or more ...

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Номер записи: 51
15-02-2018 дата публикации

Suction Acoustic Filter for Compressor

Номер: US20180045195A1
Автор: Couto Paulo Rogerio Carrara, KALLUF Flavio Jorge Haddad, Lilie Dietmar Erich Bernhard
Принадлежит:

The present invention relates to the technological field of compressors and components and/or devices for compressors. Problem to be solved: The current state of the art includes cooling system of dual evaporation and/or dual suction. On the solutions already existing, the selection of one among the two evaporation/suction lines is done by high complexity constructive mechanisms. Problem resolution: The invention in question aims to simplify the construction of a selection mean of one among two evaporation/suction lines. For so, is revealed a suction acoustic filter for reciprocating compressor which integrates an automatic valve coupled to the inlet way of the suction acoustic filter and a valve of a way is coupled to the inlet way of the suction acoustic filter, being said automatic valve and said valve of a way acting selectively reciprocating, where the valve opening of a way ends up opening the automatic valve. 1. Suction acoustic filter for reciprocating compressor , characterized by comprising:at least one inlet way and, at least one outlet way and at least one main chamber disposed between the two inlet ways and the outlet way;the mains chamber comprises an acoustic attenuation volume common to at least two inlet ways and to at least one outlet way;at least one automatic valve cooperating disposed related to inlet way of the suction acoustic filter;at least one valve of at least one way cooperating disposed related to the inlet way of the suction acoustic filter; andsaid automatic valve and said one way valve acting selectively reciprocating, being the opening of the one way valve ending up closing automatic valve, and one way valve closing ends up opening automatic valve.2. Filter claim 1 , according to claim 1 , characterized by the fact that a one way valve comprises a two position valve for two ways.3. Filter claim 1 , according to claim 1 , characterized by the fact that a one way valve comprises a valve commanded by solenoid.4. Filter claim 1 , ...

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Номер записи: 52
08-05-2014 дата публикации

Evacuating a Chamber

Номер: US20140127038A1
Автор: Stephens Philip John, Thompson Michael Geoffrey
Принадлежит: EDWARDS LIMITED

A method and apparatus for reducing undesirable noise generated by a vacuum pumping system. The vacuum system operates to reduce the pressure in a chamber to a first pressure value. The system then detects that the pressure at the vacuum pump system's inlet is about to change to a second higher pressure and, in response, the speed of a booster pump in the vacuum pump system is reduced below the rated speed for the pump. When the pressure at the vacuum pump's inlet is above the second pressure, the speed of the booster pump is increased to the rated speed. Thus, the booster pump is slowed down prior the pump system becoming exposed to a rapid increase in inlet pressure. 1. A method of reducing noise generated by a vacuum pumping system operating to evacuate a chamber , the method comprising the steps of:operating the vacuum pumping system at a rated speed to reduce chamber pressure to a first pressure;determining that the pressure at the vacuum pumping system's inlet is about to change to a second pressure that is higher than the first pressure;in response to the determining step, reducing the speed of a booster pump in the vacuum pumping system to a second speed that is below the rated speed;and then increasing the speed of the booster pump to the rated speed when the pressure at the vacuum pumping system's inlet is above the second pressure.2. A method of reducing noise generated by a vacuum pumping system operating to evacuate a loadlock chamber connected to a semiconductor processing tool , the method comprising the steps of:operating the vacuum pumping system at a rated speed to maintain loadlock chamber pressure at a first vacuum pressure;activating a valve to isolate the loadlock chamber from the vacuum pumping system;determining that the pressure in the loadlock chamber has increased to a second pressure that is greater than the first pressure;reducing the speed of a booster pump in the vacuum pumping system to a second speed that is below the rated speed of ...

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Номер записи: 53
14-02-2019 дата публикации

FLUID-WORKING MACHINE AND OPERATING METHOD

Номер: US20190048869A1
Автор: ALMOND Jonathan Paul, Caldwell Niall James, Rampen William Hugh Salvin, Stein Uwe Bernhard Pascal
Принадлежит:

A fluid-working machine has a plurality of working chambers, e.g., cylinders, of cyclically changing volume, a high-pressure fluid manifold and a low-pressure fluid manifold, at least one valve linking each working chamber to each manifold, and electronic sequencing means for operating said valves in timed relationship with the changing volume of each chamber, wherein the electronic sequencing means is arranged to operate the valves of each chamber in one of an idling mode, a partial mode in which only part of the usable volume of the chamber is used, and a full mode in which all of the usable volume of the chamber is used, and the electronic sequencing means is arranged to select the mode of each chamber on successive cycles so as to infinitely vary the time averaged effective flow rate of fluid through the machine. 115-. (canceled)16. A method of operating a fluid-working machine having a plurality of working chambers of cyclically changing volume , said working chambers comprising cylinders in which pistons are arranged to reciprocate , a high-pressure fluid manifold and a low-pressure fluid manifold , at least one valve linking each working chamber of said working chambers to each manifold , the method comprising:operating the valves of at least one of said working chambers in a partial motoring mode in which only part of the usable volume of the one working chamber is used.17. The method according to claim 16 , wherein the valve linking said one of the working chambers to the low-pressure manifold is closed before top dead centre and the valve linking said one of the working chambers to the high-pressure manifold is opened after top dead centre.18. The method according to claim 17 , wherein the valve linking said one of the working chambers to the high-pressure manifold is closed after the induction of a fraction of the working chamber volume to thereby cause only part of the usable volume of the one working chamber to be used.19. A method of operating a fluid- ...

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Номер записи: 54
25-02-2016 дата публикации

PUMP CONTROL METHOD AND SYSTEM

Номер: US20160053879A1
Автор: CARL Blake
Принадлежит:

A hydraulic hybrid vehicle includes a powersplit transmission , a prime mover , a primary hydraulic pump motor unit , a secondary pump motor unit , a high pressure hydraulic accumulator , a planetary gear set , and drive wheels . Under certain conditions when vehicle is operated at relatively higher cruising speeds, the secondary unit may be hydraulically disabled by valve and/or mechanically disabled by clutch and/or connected to the drive wheels through high gear ratio connection . Also under these conditions, primary unit may be oscillated or repeatedly cycled through a power additive mode in which primary unit rotates in one direction to charge accumulator and a power regeneration mode in which primary unit rotates in the opposite direction and receives hydraulic fluid from accumulator 1. A method of controlling a primary hydraulic pump motor unit and a secondary hydraulic pump motor unit in a vehicle hydraulic drive system for operating in a cruising mode , comprising the steps:providing a hydraulic drive system with a primary hydraulic pump motor unit and with a secondary hydraulic pump motor unit;providing an electric controller with electric communication with each of the hydraulic units;mechanically connecting the primary hydraulic unit and the secondary hydraulic unit with a vehicle prime mover and with drive wheels of the vehicle through a planetary gear set; anddisabling the secondary hydraulic unit during the cruising mode.2. A method as set forth in claim 1 , wherein the disabling includes mechanically disconnecting the secondary hydraulic unit from the planetary gear set.3. A method as set forth in claim 2 , wherein the disconnecting is performed by a clutch.4. A method as set forth in claim 1 , including providing a hydraulic energy storage device having a hydraulic energy storage capacity in fluid communication with the primary and secondary hydraulic units.5. A method as set forth in claim 4 , wherein the disabling includes closing fluid pressure ...

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Номер записи: 55
25-02-2021 дата публикации

METHANE AND EMISSIONS REDUCTION SYSTEM

Номер: US20210054837A1
Автор: Puentes Carlos, Robbins Michael, Strezo Peter
Принадлежит:

A system that can eliminate engine combustion emissions in addition to raw and fugitive methane emissions associated with a gas compressor package. The system may comprise an air system for starting and instrumentation air supply; electrically operated engine pre/post-lube pump, compressor pre-lube pump, and cooler louver actuators; compressor distance piece and pressure packing recovery system; blow-down recovery system; engine crankcase vent recovery system; a methane leak detection system; and an overall remote monitoring system. 1. A system to reduce emissions from a compressor package comprising:a. an engine system that drives the compressor;b. an air system comprising an air compressor, said air compressor generating compressed air, and wherein at least a portion of said compressed air is routed to an air dryer and then to a plurality of instrumentation so that said instrumentation is powered by said portion of said compressed air;c. a blowdown recovery system;d. a compressor packing recovery system, said compressor packing recovery system capturing and directing process gas generated by the packing vents of said compressor;e. a methane detection system; andf. a monitoring system.2. The system of wherein said engine system comprises an air starter system.3. The system of further comprising at least one scrubber and wherein said instrumentation comprises a plurality of scrubber level controls.4. The system of wherein at least one of said air system claim 1 , said blowdown recovery system claim 1 , said compressor packing recovery system claim 1 , and said methane detection system is coupled to said monitoring system.5. The system of wherein said monitoring system is a remote monitoring system.6. The system of comprising a plurality of air compressor systems claim 1 , wherein each said plurality of air compressor systems comprises a plugged tie-in connection that manifolds said plurality of air compressor systems.7. The system of further comprising an engine pre ...

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Номер записи: 56
22-02-2018 дата публикации

AIR SUPPLY DEVICE

Номер: US20180051691A1
Автор: Li Xiaorong
Принадлежит: Zhejiang Rongpeng Air Tools Co., Ltd.

An air supply device, comprising a motor, a reducer connected to a spindle of the motor, a driving shaft connected to an output shaft of the reducer, and a connecting rod connected to the driving shaft; a cylinder having a piston disposed therein, the connecting rod being sealed inside the cylinder and connected to the piston; a control circuit, the motor being connected to an output end of the control circuit through wires; a storage battery connected to the motor and the control circuit through the wires to supply power thereto; the piston including an adjusting lever penetrated therethrough and being movable with respect to the piston, the adjusting lever having an air supplement hole; the air supply device having advantage of small size, light weight, convenience in use, and power saving. 1. An air supply device , comprising:{'b': 201', '202', '201', '203', '202', '204', '203, 'a motor (), a reducer () connected to a spindle of the motor (), a driving shaft () connected to an output shaft of the reducer (), and a connecting rod () connected to the driving shaft ();'}{'b': 205', '206', '204', '205', '206, 'a cylinder () having a piston () disposed therein, the connecting rod () being sealed inside the cylinder () and connected to the piston ();'}{'b': 207', '201', '207', '3, 'a control circuit (), the motor () being connected to an output end of the control circuit () through wires ();'}{'b': 208', '201', '207', '3, 'a storage battery () connected to the motor () and the control circuit () through the wires () to supply power thereto;'}{'b': 206', '211', '206', '211', '209, 'the piston () including an adjusting lever () penetrated therethrough and being movable with respect to the piston (), the adjusting lever () having an air supplement hole ().'}2206215. The air supply device according to claim 1 , wherein a surface of the piston () contacting with a cylinder wall is covered with a piston seal ring () This application claims priority from Chinese Patent ...

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Номер записи: 57
01-03-2018 дата публикации

Hydraulic Regulating Device

Номер: US20180058442A1
Автор: Joechle Ralf, Raschendorfer Steffen, Utler Andreas, Wiefel Rolf
Принадлежит:

A hydraulic regulating device includes a continuously adjustable regulating valve with a control piston. The control piston is displaceable in a first direction in which a connection of a pump port to an actuating-pressure port is configured to be controlled to open. The control piston is also displaceable in a second direction in which a connection of the actuating-pressure port to a tank port is configured to be controlled to open. In the first direction, the pump pressure acts on the control piston, and in the second direction, a control pressure and a spring act on the control piston. During movement of the control piston in the first direction, a damping connection, equipped with a damping nozzle, from the pump port to the tank port is configured to be controlled to open. 1. A hydraulic regulating device , comprising:a continuously adjustable regulating valve with a control piston, the control piston displaceable in (i) a first direction in which a connection of a pump port to an actuating-pressure port is configured to be controlled to open and (ii) a second direction in which a connection of the actuating-pressure port to a tank port is configured to be controlled to open,wherein the pump pressure acts on the control piston in the first direction,wherein a control pressure and a spring act on the control piston in the second direction, andwherein, during movement of the control piston in the first direction, a damping connection, equipped with a damping nozzle, from the pump port to the tank port is configured to be controlled to open.2. The regulating device according to claim 1 , wherein claim 1 , during movement of the control piston in the first direction claim 1 , the connection from the pump port to the actuating-pressure port is controlled to open before the damping connection is controlled to open.3. The regulating device according to claim 1 , wherein the control pressure is tapped off from the pump port via a nozzle and is configured to be reduced ...

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Номер записи: 58
05-03-2015 дата публикации

AUTONOMOUS WATER EXTRACTION SYSTEM AND METHOD OF USE

Номер: US20150064022A1
Автор: Cobo Miguel Angel
Принадлежит:

An autonomous water extraction system is disclosed that includes at least one solar-panel operable to convert solar energy to usable power for a sump pump to extract water from a building having no live connection to a municipal power supply. A battery is electrically coupled to at least one of the solar-panel and a power module. The battery is operable to receive and store solar energy from the at least one of the solar-panel and the power module. An inverter is electrically coupled to the battery that is operable to convert a direct current from the battery into an alternating current for powering the sump pump. The sump pump extracts water when a water level sensor detects that the water level within the building exceeds a predetermined threshold. The sump pump is placed within a sump pit. The water discharges from the building through a discharge pipe. 1. A kit for autonomous water extraction from a building with no live connection to a municipal power supply comprising:at least one solar-panel operable to convert solar energy to usable power;a mounting kit operable to mount the at least one solar-panel on a building with no live connection to a municipal power supply;a battery electrically coupled to the at least one solar-panel and operable to store an amount of solar energy from the at least one solar-panel;a sump pump electrically coupled to the battery and operable to extract a quantity of water from an enclosed area of the building; andat least one water level sensor operable to activate the sump pump when a water level within the enclosed area meets a predetermined threshold.2. The kit according to claim 1 , further comprising: transfer the amount of solar energy from the at least one solar-panel to the battery;', 'receive communication from the at least one water level sensor;', 'interpret the communication from the at least one water level sensor; and', 'activate the sump pump to extract the quantity of water from the enclosed area of the building ...

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Номер записи: 59
04-03-2021 дата публикации

LOCKOUT SYSTEM FOR METERING PUMP

Номер: US20210064735A1
Автор: Gledhill, III Robert E., Nguyen John T.
Принадлежит:

A lockout system for a metering pump is provided. The lockout system can include a user interface that is used to switch the pump between a locked configuration and an unlocked configuration. In the locked configuration, the operation of the pump cannot be adjusted through the user interface. In the unlocked configuration, the operation of the pump can be adjusted through the user interface. The lockout system can include a passkey notice that provides information regarding how to use the user interface to switch the pump between the locked and unlocked configurations. 1. A metering pump comprising:a pump motor;a user interface comprising at least one user input station; anda control unit configured to receive an input signal from the at least one user input station, the control unit further configured to adjust an operational speed of the pump motor based on the input signal, wherein the control unit has a locked configuration and an unlocked configuration, wherein in the locked configuration the control unit maintains the operational speed of the pump motor in response to receiving the input signal, wherein in the unlocked configuration, the control unit adjusts the operational speed of the pump motor in response to receiving the input signal, wherein the control unit switches between the locked and unlocked configuration based on a lockout signal received from the user interface.2. The metering pump of further comprising a passkey notice that provides an instruction on how to generate the lockout signal with the user interface.3. The metering pump of claim 2 , wherein the passkey notice is displayed on the metering pump.4. The metering pump of claim 2 , wherein the passkey notice includes a warning against adjusting an operational parameter of the metering pump.5. The metering pump of claim 2 , wherein the passkey notice is displayed within an operational manual of the metering pump.6. A method of restricting access to a control panel of a metering pump claim 2 , ...

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Номер записи: 60
28-02-2019 дата публикации

METHOD FOR OPERATING A LINEAR COMPRESSOR

Номер: US20190063425A1
Автор: Hahn Gregory William, Kusumba Srujan, Latham Joseph W., McIntyre Michael Lee
Принадлежит:

A method for operating a linear compressor includes substituting a first observed velocity, a bounded integral of the first observed velocity, an estimated clearance, an estimated discharge pressure, and an estimated suction pressure into the mechanical dynamic model for the motor, calculating an observed acceleration for the piston with the mechanical dynamic model for the motor, calculating a second observed velocity for the piston by integrating the observed acceleration for the piston, calculating an observed position of the piston by integrating the second observed velocity for the piston, and updating an estimated clearance, an estimated discharge pressure, and an estimated suction pressure based upon an error between the first and second observed velocities and an error between the bounded integral of the first observed velocity and the observed position. 1. A method for operating a linear compressor , comprising:calculating a first observed velocity for a piston of the linear compressor using at least an electrical dynamic model for a motor of the linear compressor and a robust integral of the sign of the error feedback;calculating a bounded integral of the first observed velocity;substituting the first observed velocity and the bounded integral into a mechanical dynamic model for the motor;estimating a clearance of the piston, a discharge pressure of the linear compressor and a suction pressure of the linear compressor;substituting the estimated clearance, the estimated discharge pressure, and the estimated suction pressure into the mechanical dynamic model for the motor;calculating an observed acceleration for the piston with the mechanical dynamic model for the motor;calculating a second observed velocity for the piston by integrating the observed acceleration for the piston;calculating an observed position of the piston by integrating the second observed velocity for the piston;determining an error between the first and second observed velocities and an ...

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Номер записи: 61
12-03-2015 дата публикации

SELF-ALIGNING, FLUID-DRIVEN PUMPING UNIT

Номер: US20150071794A1
Автор: ZUPANICK Joseph A.
Принадлежит:

A reciprocating well pumping unit includes a fluid-driven cylinder to drive a reciprocating rod assembly. A valve controls fluid delivery to the cylinder, the valve having a valve spool capable of being positioned in a first position or a second position, the valve in the first position causing fluid flow that allows the lifting rod to extend, the valve in the second position causing fluid flow that allows the lifting rod to retract. A detent assembly provides resistance to movement of the valve spool between the second and first positions. A control rod is coupled to and moves with the lifting rod. A spring is capable of storing energy as the control rod is moved in the first direction and a rod stop engages the spring, the spring engaging the valve spool as energy is stored in the spring to urge the valve spool toward the first position. 1. A reciprocating well pumping unit comprising:a fluid-driven cylinder adapted to be coupled to a reciprocating rod assembly, the cylinder having a lifting rod capable of traveling between an extended position and a retracted position;a valve capable of controlling fluid delivery to the cylinder, the valve having a valve spool capable of being positioned in a first position or a second position, the valve in the first position causing fluid flow that allows the lifting rod to extend, the valve in the second position causing fluid flow that allows the lifting rod to retract;a detent assembly providing resistance to movement of the valve spool between the second position and the first position;a control rod coupled to the lifting rod such that movement of the lifting rod in a first direction results in movement of the control rod in the first direction;a rod stop coupled to the control rod; anda spring carried on the control rod and capable of engagement with the rod stop, the spring capable of storing energy as the control rod is moved in the first direction and the rod stop engages the spring, the spring engaging the valve spool ...

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Номер записи: 62
12-03-2015 дата публикации

High Power Reciprocating Pump Manifold and Valve Cartridges

Номер: US20150071803A1
Автор: Huang Xiaolun
Принадлежит:

An improved manifold and valve cartridges suitable for high power (over 600 hp) reciprocating pumps for water blast or jet applications are disclosed. In one aspect, the disclosed valve cartridges are compact and mounted axially along a seat member that has a central bore in addition to suction and discharge seats. The seat member can also be provided a plurality of radially arranged bores for allowing suction flow to the pump. A spool valve assembly can be mounted through the seat member bore, and can include a valve spool, a spherical suction valve member, a compression spring, and compression-locked rings. The spool valve can include a closed flanged end that engages with the seat member discharge seat. In operation, the compression spring continuously pushes the spool valve closed flanged end against the discharge seat and pushes the suction valve member against the suction seat to retain a normally closed position. 1. A high pressure reciprocating fluid pump comprising:a manifold block having at least one valve pocket defining a discharge chamber;a plunger box mounted against the manifold block;a reciprocating plunger mounted within the plunger box; a seat member having a central bore, a suction seat surface, and a discharge seat surface;', 'a valve spool having a generally cylindrical body, the valve spool being slidably disposed through the seat member central bore, the valve spool having a circumferential wall defining an interior volume and extending between an open end facing the plunger and a closed flanged end that engages the discharge seat surface, the circumferential wall having a first set of radially spaced slots for suction flow and a second set of radially spaced slots for discharge flow, the first set of radially spaced slots being located proximate the valve spool closed end, the second set of radially spaced slots being located between the valve spool open end and the first set of radially spaced slots;', 'a suction valve member slidably ...

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Номер записи: 63
27-02-2020 дата публикации

PUMP EFFICIENCY OF A FLUID PUMP

Номер: US20200064221A1
Автор: Prescott Jon, Rasmussen John, Wetherill Rex A.
Принадлежит:

Systems and methods of monitoring a condition of a pump. One or more characteristics of a fluid flow of a fluid is monitored in a flow path of the pump to determine a fluid leakage flow rate. The fluid leakage flow rate is compared to a nominal flow rate for the pump. The pump efficiency for the pump is determined based on the comparison of the fluid leakage flow rate to the nominal flow rate. The pump efficiency is compared to a pump efficiency threshold and the condition of the pump determined based on the comparison. 1. A method of monitoring a condition of a pump , comprising:determining, by a computing device, a pump efficiency based on a fluid leakage flow rate and a nominal flow rate for the pump, the fluid leakage flow rate being a monitored flow rate through a flow path through which a fluid leakage flows from a case drain of the pump, and the nominal flow rate being an optimal fluid flow rate for the pump when operating with a minimal amount of the fluid leakage;determining, by the computing device, whether the pump efficiency has dropped below or exceeded a pump efficiency threshold;if the pump efficiency has dropped below or exceeded the pump efficiency threshold, predicting, by the computing device, an impending pump failure; andin response to predicting the impending pump failure, generating, by the computing device, an alert indicative of the impending pump failure.2. The method of further comprising:determining, by the computing device, the fluid leakage flow rate through the flow path.3. The method of further comprising:receiving, by the computing device from a fluid monitoring device, a signal indicative of the fluid leakage flow rate.4. The method of claim 3 , wherein the signal includes first data defining an overall temperature of the fluid flowing through the flow path and second data defining a temperature differential between a first point and a second point on the flow path claim 3 , and the computing device determines the fluid leakage flow ...

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Номер записи: 64
29-05-2014 дата публикации

Variable displacement pump

Номер: US20140147323A1
Автор: Hideaki Ohnishi, Koji Saga, Yasushi Watanabe
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A variable displacement pump including a control mechanism shiftable between first and second states, when the control mechanism is in the first state, the spool is in an initial position in which fluid communication between an introduction port and the remaining ports is restrained, fluid communication between a first control port and a drain port is allowed, and fluid communication between a second control port and the drain port is restrained, and when the control mechanism is shifted to the second state in accordance with increase in fluid pressure discharged, the spool is in an operating position in which the fluid communication between the introduction port and the first control port is allowed, the fluid communication between the first control port and the drain port is restrained, and the fluid communication between the second control port and the drain port is allowed.

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Номер записи: 65
16-03-2017 дата публикации

Device For Sealing And Inflating Inflatable Objects

Номер: US20170072648A1
Автор: Detering Rainer, Zaum Christopher
Принадлежит: CONTINENTAL REIFEN DEUTSCHLAND GMBH

Devices for sealing and inflating inflatable objects, wherein the device has as a source of compressed gas a compressor unit, which is formed as a reciprocating piston compressor driven by a slider crank mechanism and has a piston moved in an oscillating manner in a cylinder, wherein the piston and the cylinder delimit a compression chamber and the cylinder is closed on the output side by a cylinder head with an outlet valve, wherein the device also has a reservoir for an automatic sealant that can be filled into the inflatable object and a valve-and-distributor unit for sealant and compressed gas, which connects the reservoir and the compressor unit and has a line that can be connected to the inflatable object, wherein the valve-and-distributor unit allows the device to be operated according to choice in the two operating modes “inflate” and “feed sealant”. 2. The device as claimed in claim 1 , wherein content of the dead air volume can be varied depending on the different pressure that is respectively produced by the two operating modes in the compression chamber.3. The device as claimed in claim 1 , wherein the dead air volume is provided by a pressure chamber which is connected to the compression chamber and the content of which can be varied by the different pressure that is respectively produced by the two operating modes in the compression chamber.4. The device as claimed in claim 3 , wherein the content of the further pressure chamber can be varied against spring force claim 3 , the spring force being adjustable.5. The device as claimed in claim 3 , wherein the further pressure chamber takes the form of a second cylinder claim 3 , arranged as a guided displaceably movable piston slide valve acted upon by a spring.6. The device as claimed in claim 1 , wherein the content of the dead air volume or pressure chamber can be increased to at least 5% of the compression chamber.7. The device as claimed in claim 1 , wherein the compressed gas flows from the ...

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Номер записи: 66
19-03-2015 дата публикации

AIR COMPRESSOR

Номер: US20150078920A1
Автор: CHOU Wen-San
Принадлежит:

An air compressor having a pen pressure gauge and an is disclosed and provided for measuring the change of a pressure value as well as releasing air when the pressure value is greater than a predetermined maximum safety value, so as to achieve the safety effect without installing an additional safety value and prevent damages to an inflated object. 1. An air compressor , comprising a substrate , a motor coupled onto the substrate , a transmission mechanism , a cylinder extended from the substrate and having an air reservoir , a plurality of ducts installed at the air reservoir , a piston installed in the cylinder and driven by the transmission mechanism and the motor to input compressed air into the air reservoir and output the compressed air from the ducts of the air reservoir , characterized in that a pressure gauge having an over-pressure protection unit is directly coupled to one of the ducts , and the pressure gauge measures and indicates a change of a current pressure value by a linear movement of the piston , and if the pressure value reaches a predetermined maximum safety pressure value , the pressure gauge will discharge air through an over-pressure protection unit to achieve a safety effect and air compressor requires no additional duct to install the pressure safety valve.2. The air compressor of claim 1 , wherein the pressure gauge includes a main body claim 1 , and the main body is a pen having an internal chamber of a circular caliber claim 1 , and an end of the main body is an open end claim 1 , and the other end of the main body is a rear end for receiving compressed air generated by the air compressor claim 1 , and a linear shifter is installed in the internal chamber of the main body claim 1 , and the compressed air produced by the air compressor is pushed and delivered to the linear shifter to perform a linear displacement.3. The air compressor of claim 2 , wherein the over-pressure protection unit is a relief hole penetrating through the main ...

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Номер записи: 67
05-06-2014 дата публикации

Hydrostatic Positive Displacement Machine

Номер: US20140154104A1
Автор: Stuermer Burkhard
Принадлежит: Linde Hydraulics GmbH & Co. KG

A hydrostatic positive displacement machine () is operated in a closed circuit and delivers hydraulic fluid into a working circuit. The displacement volume is varied by a control device () having a variable displacement piston device (). The machine () has a swivel-back device () which, in the event of a decrease of the feed pressure from the feed pressure source (), guarantees actuation of the machine () toward a reduction of the displacement volume. The swivel-back device () includes at least one pressure sequence valve (), which is in communication on the input side with the working circuit of the machine (). In the event of a decrease in the feed pressure from the feed pressure source () below a limit pressure, the pressure sequence valve () makes it possible to supply the control device () of the machine () with hydraulic fluid from the working circuit. 1. A hydrostatic positive displacement machine which is operable in a closed circuit and delivers hydraulic fluid into a working circuit , comprising:a control device comprising a variable displacement piston device comprising a first control pressure chamber and a second control pressure chamber, wherein the control device is in an operative connection with a displacement volume control mechanism, wherein the control pressure chambers of the variable displacement piston device are connectable by a control valve with a feed pressure source or are relieved to a reservoir, wherein the positive displacement machine and the feed pressure source are driven by a drive machine, wherein the positive displacement machine includes a swivel-back device which, in the event of a decrease of feed pressure from the feed pressure source, provides actuation of the positive displacement machine toward a reduction of a displacement volume, wherein the swivel-back device comprises at least one pressure sequence valve, which is in communication on an input side with the working circuit of the positive displacement machine, and ...

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Номер записи: 68
05-03-2020 дата публикации

COMPRESSOR AND REFRIGERATION CYCLE DEVICE

Номер: US20200072212A1
Автор: Murata Hiroshi, Okumura Hideki, OKUMURA Takehiko, SUGIURA Kanichiro, Takahashi Shinichi
Принадлежит:

A compressor includes a sealed container, a compression element installed inside the sealed container and configured to compress refrigerant, a motor element installed inside the sealed container as a drive source of the compression element, and a pressure switch installed inside the sealed container and configured to open a normally closed contact when pressure inside the sealed container reaches or exceeds a first set pressure, where the pressure switch is connected to all of connection parts of windings forming a part of the motor element. 1. A compressor comprising:a sealed container;a compression element installed inside the sealed container and configured to compress refrigerant;a motor element installed inside the sealed container and serves as a drive source of the compression element; anda pressure switch installed inside the sealed container and configured to open a normally closed contact when pressure inside the sealed container reaches or exceeds a first set pressure, whereinthe pressure switch is connected to all of connection parts of windings forming a part of the motor element.2. The compressor of claim 1 , whereinthe motor element is driven by a three-phase AC, andthe pressure switch is connected to a neutral point of the windings that is the connection parts.3. The compressor of claim 1 , whereinthe motor element is driven by a single-phase AC,the windings include a main winding and an auxiliary winding, andthe pressure switch is connected to a common point of the main winding and the auxiliary winding that is the connection parts, or to a common line.4. The compressor of claim 1 , wherein the pressure switch which is configured to close the normally closed contact when the pressure inside the sealed container reaches or exceeds the first set pressure and then the pressure inside the sealed container falls to or below a second set pressure that is lower than the first set pressure.5. The compressor of claim 1 , wherein the pressure switch is ...

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Номер записи: 69
14-03-2019 дата публикации

DISPLACEMENT CONTROL VALVE

Номер: US20190078562A1
Автор: Fukudome Kohei, Hayama Masahiro, HIGASHIDOZONO Hideki, KURIHARA Daichi
Принадлежит:

A displacement control valve improved in the function of discharging a liquid refrigerant in a control chamber at startup achieves a reduction in startup time and an improvement in operating efficiency during control of a variable displacement compressor simultaneously. An opening area between a third valve section and a third valve seat surface in a control area to control the flow rate or pressure in a working control chamber is set smaller than an area of an auxiliary communicating passage, thereby reducing the minimum area of a Pc-Ps flow path in the control area. 1. A displacement control valve that controls a flow rate or pressure in a working control chamber according to a degree of opening of a valve unit , comprising:a valve body including a first valve chest that communicates with first communicating passages for passing fluid at control pressure, a second valve chest that has a second valve seat surface for a valve hole communicating with the first valve chest and communicates with second communicating passages for passing fluid at discharge pressure, and a third valve chest that communicates with third communicating passages for passing fluid at suction pressure and has a third valve seat surface;a valve element disposed in the valve body and having an intermediate communicating passage communicating with the first valve chest and the third communicating passages, the valve element having a second valve section that separates from and comes into contact with the second valve seat surface to open and close the valve hole communicating with the first valve chest and the second valve chest, a third valve section that opens and closes opposite to, and in conjunction with, the second valve section and separates from and comes into contact with the third valve seat surface to open and close communication between the intermediate communicating passage and the third communicating passages, and a first valve section that is disposed in the first valve chest and ...

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Номер записи: 70
12-06-2014 дата публикации

DIRECT INJECTION PUMP CONTROL STRATEGY FOR NOISE REDUCTION

Номер: US20140161631A1
Автор: Furuhashi Tsutomu, Lubinski Joseph, Oda Kaoru, Ramamurthy Dhyana, Spence Rebecca
Принадлежит:

A pump may have a first chamber and a solenoid coil to control movement of a first valve member. A second chamber may have a second valve member to control fluid moving into a third chamber. A first fluid passageway may link the first and second chambers, a second passageway may link second and third chambers and a third passageway may link third and fourth chambers. After pressurizing the third chamber causing fluid to flow into and leave a fourth chamber, the third chamber depressurizes due to downward movement of a plunger. Upon depressurization with a solenoid coil energized, second valve member floats and then moves against a valve seat. While the second valve member is moving toward the valve seat, the solenoid coil is de-energized causing the first valve member to move and strike the second valve member when the second valve member is moving at maximum velocity. 1. A method of controlling a pump , comprising:providing the pump with a casing that defines a first chamber, a second chamber, a third chamber and a fourth chamber;providing a fluid inlet in the first chamber and a fluid outlet in the fourth chamber;providing a first movable valve member in the first chamber and a second movable valve member in the second chamber;providing a third movable valve member in the fourth chamber;providing a solenoid coil;during a suction stroke of the pump, moving a plunger in the third chamber away from the third chamber so that a volume of the third chamber increases and creating a vacuum in the third chamber to draw fuel from the fluid inlet through the first chamber and through the second chamber and into the third chamber;moving the third valve member against a valve seat to prevent fuel from exiting through fluid outlet;during a pumping stroke of the pump, energizing the solenoid coil a first time and at the same time, attracting the first movable valve member toward the solenoid coil, moving the second movable valve member against a valve seat;de-energizing the ...

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Номер записи: 71
12-03-2020 дата публикации

APPARATUS

Номер: US20200080286A1
Автор: Caldwell Niall James
Принадлежит:

A prime mover and a plurality of hydraulic actuators, a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers, a hydraulic circuit extending between working chambers of the hydraulic machine and the hydraulic actuators, each working chamber of the hydraulic machine comprising a low-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a high-pressure manifold. The hydraulic machine being configured to actively control at least the low-pressure valves of the working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the working chambers, responsive to a demand signal. 1. An apparatus comprising a prime mover and a plurality of hydraulic actuators , a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers having a volume which varies cyclically with rotation of the rotatable shaft , a hydraulic circuit extending between a group of one or more working chambers of the hydraulic machine and one or more of the hydraulic actuators ,each working chamber of the hydraulic machine comprising a low-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a high-pressure manifold,the hydraulic machine being configured to actively control at least the low-pressure valves of the group of one or more working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the ...

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Номер записи: 72
12-03-2020 дата публикации

APPARATUS

Номер: US20200080551A1
Автор: Caldwell Niall James, Green Matthew, MACPHERSON Jill
Принадлежит:

A prime mover and a plurality of hydraulic actuators, a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising working chambers, a hydraulic circuit between working chambers of the hydraulic machine and the hydraulic actuators, each working chamber of the hydraulic machine comprising a low-pressure and high-pressure valves regulating the flow of hydraulic fluid between the working chamber and a corresponding low-pressure manifold and a high-pressure manifold. The hydraulic machine being configured to actively control the low-pressure valves of the working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the working chambers, responsive to a demand signal, wherein the apparatus further comprises a controller configured to calculate the demand signal in response to a measured property of the hydraulic circuit or actuators. 1. An apparatus comprising a prime mover and a plurality of hydraulic actuators , a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers having a volume which varies cyclically with rotation of the rotatable shaft , a hydraulic circuit extending between a group of one or more working chambers of the hydraulic machine and one or more of the hydraulic actuators ,each working chamber of the hydraulic machine comprising a low-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve which regulates the flow of hydraulic fluid between the working chamber and a high-pressure manifold,the hydraulic machine being configured to actively control at least the low-pressure valves of the group of one or more working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber ...

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Номер записи: 73
29-03-2018 дата публикации

Mechanism for Coarse and Fine Adjustment of Flows in Fixed Displacement Pump

Номер: US20180087497A1
Автор: Beauman Zachary, Middleton Joseph, Rawlings David
Принадлежит:

An angle adjustment mechanism for a pump and a motor includes a base, two eccentric bushings and a fixed link. The base has a hinge disposed between a motor flange and a pump flange and a pair of spaced apertures disposed opposite the hinge. The first eccentric bushing has a body portion received in a first of the apertures of the base and the second eccentric bushing has a body portion received in one of a second of the apertures of the base or an inner bore of the first eccentric bushing. The axial center line of the inner bore of the first eccentric bushing is offset from an axial center line of the body portion by a first distance and the axial center line of the inner bore of the second eccentric bushing is offset from an axial center line of the body portion by a second distance, wherein the second distance is different from the first distance. 1. An angle adjustment mechanism for a pump and a motor comprising:a base including a motor flange for mounting a motor, a pump flange opposite said motor flange for mounting a pump, a hinge disposed between said motor flange and said pump flange and a pair of spaced apertures disposed opposite said hinge;a first eccentric bushing having a body portion received in a first of said apertures of said base, said first eccentric bushing having an inner bore with an axial center line offset from an axial center line of said body portion by a first distance;a second eccentric bushing having a body portion received in one of a second of said apertures of said base or said inner bore of said first eccentric bushing, said second eccentric bushing having an inner bore with an axial center line offset from an axial center line of said body portion by a second distance, said second distance being different from said first distance; anda fixed link having a first pin portion received in said first aperture of said base and a second pin portion received in said second aperture of said base,wherein rotation of said eccentric bushings ...

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Номер записи: 74
30-03-2017 дата публикации

Device For Sealing And Inflating Inflatable Objects

Номер: US20170087783A1
Автор: Detering Rainer, Zaum Christopher
Принадлежит: CONTINENTAL REIFEN DEUTSCHLAND GMBH

Devices for sealing and inflating inflatable objects, in particular for sealing and inflating motor vehicle tires, wherein the devices have as a source of compressed gas a compressor unit, which is formed as a reciprocating piston compressor driven by a slider crank mechanism and has a piston moved in an oscillating manner in a cylinder, and wherein the piston and the cylinder delimit a compression chamber and the cylinder is closed on the output side by a cylinder head with an outlet valve. 2. The device as claimed in further comprising a pressure gage and a reservoir for an automatic sealant that can be filled into the inflatable object and a valve-and-distributor unit for sealant and compressed gas claim 1 , which connects the reservoir and the compressor unit and has a line that can be connected to the inflatable object.3. The device as claimed in claim 1 , wherein the dead air volume is provided by a pressure chamber which is connected to the compression chamber and the content of which can be varied depending on the temperature of the cylinder head.4. The device as claimed in claim 1 , wherein a further pressure chamber takes the form of a second cylinder arranged in a guided claim 1 , temperature-dependently displaceable piston slide valve.5. The device as claimed in claim 4 , wherein the piston slide valve can be actuated by an actuator of a shape memory alloy.6. The device as claimed in claim 4 , wherein the piston slide valve can be displaced by an actuator that is actuated with the aid of a thermobimetal element.7. The device as claimed in claim 4 , wherein the piston slide valve can be actuated by an electrical or electromechanical actuator claim 4 , which is controlled by a monitoring unit that can be activated by way of temperature sensors.8. The device as claimed in claim 1 , wherein the content of the dead air volume or pressure chamber can be increased to at least 5% of the compression chamber.9. The device as claimed in claim 1 , wherein the ...

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Номер записи: 75
21-03-2019 дата публикации

IN-VEHICLE COMPRESSION DEVICE

Номер: US20190085841A1
Автор: ITO Tsutomu, Kawai Yoshinori, KOBAYASHI Kan
Принадлежит:

Provided is an in-vehicle compression device that allows a compressor to be operated at a low current, and operated with low noise and low vibration according to a state of a vehicle. The in-vehicle compression device includes: a compressor including a cylinder and a piston that is slidably provided inside the cylinder and defines a compression chamber; a linear motor including a movable element reciprocatably connected to the piston; and a controller configured to control driving of the linear motor. The in-vehicle compression device is configured to supply a working fluid compressed in the compression chamber to a pressure device provided in a vehicle. The controller is configured to variably adjust a stroke of the piston according to a state of the vehicle. 1. An in-vehicle compression device comprising:a compressor including a cylinder and a piston that is slidably provided inside the cylinder and defines a compression chamber;a linear motor including a movable element reciprocatably connected to the piston; anda controller configured to control driving of the linear motor,wherein the in-vehicle compression device is configured to supply a working fluid compressed in the compression chamber to a pressure device provided in a vehicle; andan engine speed detection portion configured to detect the engine speed of the vehicle,wherein the controller is configured to set a stroke of the piston to be shorter based on a relationship between an engine driving noise corresponding to the engine speed and a linear motor driving noise corresponding to the stroke of the piston, when the engine speed detected by the engine speed detection portion is lower than a predetermined engine speed.2. The in-vehicle compression device according to claim 1 , wherein the controller is configured to adjust a bottom dead center of the movable element without changing a top dead center thereof.3. The in-vehicle compression device according to claim 1 , wherein the controller is configured to ...

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Номер записи: 76
19-06-2014 дата публикации

Dielectric Sensor Arrangement and Method for Swashplate Angular Position Detection

Номер: US20140169987A1
Автор: Du Hongliu
Принадлежит: CATERPILLAR INC.

Swashplate angle sensing arrangement for a variable displacement pump a nonrotating swashplate and a rotating pump barrel includes a dielectric sensor in a swashplate angle sensing arrangement. The arrangement includes a sensing probe coupled to the casing, a sensor target coupled to the swashplate, and a controller configured to direct an alternating current through the sensing probe to establish an impedance between the probe and the target, and to determine voltage across the probe. The controller is further adapted to determine the angle of the swashplate relative to the casing based on the determined voltage. 1. A swashplate angle sensing arrangement for a variable displacement pump having a casing containing a nonrotating swashplate adapted to pivot relative to an axis of rotation of a pump barrel , the swashplate defining a swashplate angle relative to a plane substantially perpendicular to the axis of rotation of the pump barrel , the swashplate angle sensing arrangement comprising:a sensing probe coupled to the casing;a sensor target coupled to the swashplate; anda controller configured to direct an alternating current through the sensing probe to establish an impedance between the sensing probe and the sensor target, and to determine a voltage across the sensing probe, the controller further adapted to determine the angle of the swashplate relative to the casing based on the determined voltage.2. The swashplate angle sensing arrangement of claim 1 , wherein the sensing probe includes a conductive portion exposed to an interior of the casing and a nonconductive portion disposed between the conductive portion and the casing.3. The swashplate angle sensing arrangement of claim 2 , wherein the conductive portion includes a wire.4. The swashplate angle sensing arrangement of wherein the sensor target includes a conductive portion and a nonconductive portion disposed between the conductive portion and the swashplate.5. The swashplate angle sensing arrangement of ...

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Номер записи: 77
30-03-2017 дата публикации

FLUID PRESSURE PRODUCING METHOD AND FLUID PRESSURE PRODUCING DEVICE

Номер: US20170089328A1
Автор: ISIKURA Shin, Sato Sho
Принадлежит:

A fluid pressure producing method reduces fluctuations in the pressure of a fluid pressurized using a plunger driven by applying the pressure of a working medium to a double-acting piston. The method includes switching a moving direction of the piston when detecting the piston reaching a movement end, operating the working medium pump to discharge the working medium at a maximum flow rate while the load is less than the load limit after the moving direction of the piston is switched, and detecting a pressure of the fluid and feeding back the detected pressure of the fluid and performing feedback control of the pressure of the fluid to eliminate a difference between the pressure of the fluid and a target pressure of the fluid. 1. A fluid pressure producing method for pressuring a fluid using a plunger driven by operating a double-acting piston with a pressure of a working medium produced from a working medium pump , the method comprising:switching a moving direction of the piston when detecting the piston reaching a movement end;detecting a load of the working medium pump and determining whether the detected load is not less than a load limit;operating the working medium pump to discharge the working medium at a maximum flow rate while the load is less than the load limit after the moving direction of the piston is switched; anddetecting a pressure of the fluid and feeding back the detected pressure of the fluid and performing feedback control of the pressure of the fluid to eliminate a difference between the pressure of the fluid and a target pressure of the fluid.2. The fluid pressure producing method according to claim 1 , whereinthe feedback control of the pressure of the fluid is performed after the load reaches or exceeds the load limit, andthe feedback control of the pressure of the fluid includes controlling the load in a manner not to exceed a rated load of the working medium pump.3. The fluid pressure producing method according to claim 1 , further ...

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Номер записи: 78
09-04-2015 дата публикации

BEVERAGE PRODUCTION MODULE AND METHOD FOR OPERATING A BEVERAGE PRODUCTION MODULE

Номер: US20150098836A1
Автор: Etter Stefan, Piai Guido
Принадлежит:

A beverage production module includes a pump for delivering a fluid from a tank to an extraction chamber, a power source for the pump and a controller for operating the pump and for controlling the voltage applied from the power source to the pump, wherein the controller is adapted to operate the pump at a normal operation voltage (U3) and to operate the pump over a predefined time (T1,T2) at a reduced voltage level (U1, U2). A method for operating the pump of a beverage production module is also provided. 1. A beverage production module comprising:a pump for delivering a fluid from a tank to an extraction chamber;a power source for applying a voltage to the pump; anda controller for operating the pump and for controlling the voltage applied from the power source to the pump, the controller is configured to operate the pump after the start at a first reduced voltage level; after a first predefined time, to operate the pump at the normal operation voltage; and, during the operation of the pump, to operate the pump for a second predefined time at a second reduced voltage level.2. The module of wherein at least one of the first and second reduced voltage levels is a constant voltage.3. The module of wherein at least one of the first and second reduced voltage levels is a decreasing or increasing voltage.4. The module of wherein the power source provides direct current DC voltage to the pump.5. The module of wherein the pump comprises a circuit comprising a Buck-converter.6. The module of wherein the pump comprises a circuit comprising a motor chopper.7. The module of wherein the power source provides alternating current AC voltage to the pump.8. The module of wherein the controller is configured to operate the pump at the first and second reduced voltage levels by decreasing the integral of the applied voltage.9. The module of wherein the controller is configured to operate the pump at the first and second reduced voltage levels by decreasing the maximum applied ...

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Номер записи: 79
07-04-2016 дата публикации

Displacement Pump

Номер: US20160097386A1
Автор: Jones Andrew, Ophardt Heiner, Shi Zhenchun (Tony)
Принадлежит:

A valve assembly with a valve member coaxially received within a valve casing and interacts with the casing to provide a one-way inlet valve at one end of the valve casing and a one-way outlet valve at the other end of the casing with an annular compartment therebetween adapted to be coupled to a variable volume compartment and thereby together provide a simplified construction for valving components of a fluid pump. 1. A pump comprising:a variable volume compartment defined between a chamber-forming body and a movable member movable relative to the chamber-forming body wherein movement of the movable member changes a volume of the variable volume compartment between a first volume and a second volume different than the first volume,a tubular valve casing elongate along a casing axis and defining a valve chamber therein,the valve chamber having an inner wall circular in cross-section along the axis, an inlet end and an outlet end,a valve member coaxially located within the valve chamber,the valve member comprising a stem extending axially within the valve chamber,an inlet disc extending radially outwardly from the stem to a distal end in engagement with wall, the inlet disc engaging the wall to prevent fluid flow axially therepast in a direction from the outlet end towards the inlet end, the inlet disc being resiliently deflectable to be deflected from engaging the wall to permit fluid flow axially therepast in a direction from the inlet end towards the outlet end,an outlet disc extending radially outwardly from the stem to a distal end in engagement with wall, the outlet disc engaging the wall to prevent fluid flow axially therepast in a direction from the outlet end towards the inlet end, the outlet disc being resiliently deflectable to be deflected from engaging the wall to permit fluid flow axially therepast in a direction from the inlet end towards the outlet end,the inlet disc spaced axially away from the outlet end from the outlet disc,the outlet disc spaced ...

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Номер записи: 80
28-03-2019 дата публикации

Refrigeration cycle device

Номер: US20190092130A1
Автор: Masato Komura, Toru Okuma, Yoshitaka Akiyama, Yusuke Ito
Принадлежит: Denso Corp, Soken Inc

A refrigeration cycle device includes: a variable displacement compressor including a discharge capacity varying part to change a refrigerant discharge capacity; a controller that outputs a capacity control signal to the variable displacement compressor to change the refrigerant discharge capacity; a heat exchanger that condenses or cools refrigerant discharged from the variable displacement compressor; a decompressor that decompresses and expands refrigerant flowing out of the heat exchanger; an evaporator that evaporates refrigerant decompressed and expanded by the decompressor; and a high load determiner that determines whether the compressor is in a high load operational status based on the capacity control signal.

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Номер записи: 81
28-03-2019 дата публикации

DIAPHRAGM PUMP WITH A FUNCTIONALLY SAFE DIAPHRAGM POSITION CONTROL

Номер: US20190093652A1
Автор: Reinhard Martin
Принадлежит: ProMinentGmbH

The present invention relates to diaphragm pump () having a delivery chamber () and a working chamber (), wherein the working chamber can be or is filled with a hydraulic fluid and is operatively connected to a pressure generating device in order to apply an oscillating pressure to the hydraulic fluid, further comprising a diaphragm () having at least one diaphragm layer () and a diaphragm core (), which separates the delivery chamber () and the working chamber () from each other, wherein the diaphragm () is or can be operatively connected to a diaphragm return device () comprising a pull rod (), which applies or can apply a return force on the diaphragm () in the direction of the suction stroke position, and further comprising a storage chamber () for holding the hydraulic fluid, and wherein the working chamber () and the storage chamber () are connected to each other by means of a return flow channel () closed by means of a closure element (′), and wherein the closure element (′) is operatively connected to the diaphragm core () and the diaphragm return device (), so that the return force and a pressure force counteracting the return force as a result of the fluid pressure in the working chamber () act on the closure element (′), and wherein, when a predetermined triggering force is exceeded as a sum of the return force and the pressure force on the closure element (′), the return flow channel () is opened. 1135379111315353111117191121521252323232323151752323232325151915192525. A diaphragm pump () having a delivery chamber () and a working chamber () , wherein the delivery chamber () comprises a pressure connection () and a suction connection () , and wherein the working chamber can be or is filled with a hydraulic fluid and is operatively connected to a pressure generating device in order to apply an oscillating pressure to the hydraulic fluid , further comprising a diaphragm () having at least one diaphragm layer () and a diaphragm core () , which separates the ...

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Номер записи: 82
26-06-2014 дата публикации

LIMITER FOR A DISPENSING DEVICE

Номер: US20140180217A1
Автор: Giambattista Lucio, Kuczek John, Patience Clive, Quinn Donovan
Принадлежит:

A limiter for a dispensing device is provided. The limiter includes a body () arranged to mount with at least a portion of a dispensing device (), and a stop extending from the body. The stop () is configured to permit movement a plunger of the dispensing device a predetermined distance in a dispensing direction correlated to a desired volume of medium to be delivered from the dispensing device. The stop is configured to prevent further movement of the plunger in the dispensing direction, thereby limiting the amount of medium delivered from the dispensing device. The dispensing device may be a syringe. 1. A limiter for a dispensing device , the limiter comprising:a body constructed and arranged to mount with at least a portion of a barrel of a dispensing device; anda stop extending from the body, the stop being configured to permit movement of a plunger of the dispensing device a predetermined distance in a dispensing direction correlated to a desired volume of medium to be delivered from the dispensing device, wherein the stop is configured to prevent further movement of the plunger in the dispensing direction, thereby limiting the amount of medium delivered from the dispensing device.2. The limiter of claim 1 , wherein the body is a housing constructed and arranged to hold at least a portion of a barrel of a dispensing device claim 1 , the housing having a first end and a second end.3. The limiter of claim 2 , wherein the stop is constructed and arranged as a collar extending outwardly from the first end of the housing claim 2 , the collar having a channel therethrough claim 2 , the collar being configured to receive at least a portion of the plunger such that the plunger is moveable within the channel.4. The limiter of claim 2 , wherein the second end of the housing has an opening configured such that a needle of a dispensing device extends out of the housing.5. The limiter of claim 1 , in combination with a dispensing device.6. The limiter of claim 5 , wherein ...

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Номер записи: 83
23-04-2015 дата публикации

HYDRAULIC PISTON PUMP HAVING DISTRIBUTION THROUGH A BI-DIRECTIONAL PORT PLATE

Номер: US20150110656A1
Автор: Porel François
Принадлежит:

A hydraulic pump having a plurality of pistons sliding in bores formed in a barrel mounted in rotation in a casing of the pump, the barrel bearing against a distribution port plate borne by a cylinder head. Two drainage channels place an inner space of the casing in respective communication with two suction/delivery orifices of the cylinder head. Each drainage channel is provided with a valve able to close the drainage channel in response to an overpressure in the suction/delivery orifice such that, according to the direction of rotation of the pump, the inner space of the casing is in communication through one of the drainage channels with the suction line; whereas the communication through the other drainage channel between the delivery side and the inner space of the casing is closed. 1. A hydraulic piston pump of the type having a plurality of pistons sliding in bores formed in a barrel mounted in rotation in a casing of the pump, said barrel bearing against a distribution port plate borne by a cylinder head, said distribution port plate being provided with two symmetrical crescents serving alternately as a suction crescent and a delivery crescent according to the direction of rotation of the pump, in which the cylinder head is provided with two drainage channels placing an inner space of the casing in respective communication with two suction/delivery orifices of said cylinder head; each drainage channel being provided with a valve, wherein the valve has in each case a compression spring housed in the drainage channel so as to maintain the valve in an open position by default, the valve being able to close the drainage channel in response to an overpressure in the suction/delivery orifice such that, according to the direction of rotation of the pump, the inner space of the casing is in communication through one of the drainage channels with the suction line; whereas the communication through the other drainage channel between the delivery side and the inner ...

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Номер записи: 84
23-04-2015 дата публикации

Adjusting Device for an Adjusting Piston of a Variable Clearance Space of a Reciprocating Compressor

Номер: US20150110657A1
Автор: Kornfeld Matthias, Schloffer Andreas, SPIEGL Bernhard
Принадлежит: HOERBIGER KOMPRESSORTECHNIK HOLDING GMBH

In order to enable a continuous adjustment of the variable clearance space () of a reciprocating compressor (), a threaded spindle drive with a threaded spindle nut () and a threaded spindle () is provided as an adjusting device (), wherein the threaded spindle nut () is embodied as a plastic nut () with internal thread (), the plastic nut () is arranged with an external thread () on an internal thread () of a nut carrier () of the threaded spindle nut (), and the thread height (y) of the internal thread () of the nut carrier () and the thread height (x) of the external thread () of the threaded spindle () is respectively embodied with 50 to 80% of the radial thickness (d) of the plastic nut () and the plastic thickness is at least 15% of the thread pitch (z) of the internal thread () at least in the region of the thread flanks () of the internal thread () of the plastic nut (). 131159925241091010931020242023222110222125920124262420. An adjusting device for a adjusting piston () of a variable clearance space () of a piston compressor () with a threaded spindle () , wherein the threaded spindle () is screwed with an external thread () into an internal thread () of a threaded spindle nut () and either the threaded spindle () or the threaded spindle nut () is arranged in axially displaceable manner and the axially displaceable threaded spindle nut () or the axial displaceable threaded spindle () is connected to the adjusting piston () , wherein the threaded spindle nut () is embodied as a plastic nut () with internal thread () , wherein the plastic nut () is arranged with an external thread () on an internal thread () of a nut carrier () of the threaded spindle nut () and that the thread height (y) of the internal thread () of the nut carrier () and the thread height (x) of the external thread () of the threaded spindle () is respectively embodied with 50 to 80% of the radial thickness (d) of the plastic nut () and the plastic thickness is at least 15% of the thread ...

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Номер записи: 85
19-04-2018 дата публикации

Liquid Slugging Detection And Protection

Номер: US20180106520A1
Автор: KNICK Randall, MIU Richard Allen, PATRIZIO Diane Belinda, WALLIS FRANK S.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A system includes a sensor and a controller for a refrigeration or HVAC system having a compressor. The sensor senses a temperature of the compressor during operation of the compressor. The controller is configured to determine a rate of change of the temperature relative to time and to perform one or more procedures to protect the compressor based on the rate of change of the temperature. The one or more procedures to protect the compressor include shutting down the compressor, throttling a pressure regulator valve of an evaporator associated with the compressor, adjusting an expansion valve associated with the evaporator, reducing speed of the compressor, and partially or wholly unloading the compressor. 1. A system comprising:a sensor to sense a temperature of a compressor of a refrigeration or HVAC system during operation of the compressor; anda controller for the refrigeration or HVAC system, the controller being configured to determine a rate of change of the temperature relative to time and to perform one or more procedures to protect the compressor based on the rate of change of the temperature.2. The system of wherein the one or more procedures to protect the compressor include shutting down the compressor claim 1 , throttling a pressure regulator valve of an evaporator associated with the compressor claim 1 , adjusting an expansion valve associated with the evaporator claim 1 , reducing speed of the compressor claim 1 , and partially or wholly unloading the compressor.3. The system of wherein the sensor senses the temperature proximate to a discharge port of the compressor.4. The system of wherein the sensor senses the temperature proximate to a suction port of the compressor.5. The system of wherein subsequent to shutting down the compressor claim 1 , the controller is further configured to restart the compressor using a bump-start procedure after shutting down the compressor based on the rate of change of the temperature.6. The system of wherein the ...

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Номер записи: 86
29-04-2021 дата публикации

CAPACITY CONTROL VALVE

Номер: US20210123423A1
Автор: EJIMA Takahiro, Fukudome Kohei, Hayama Masahiro, KURIHARA Daichi, Ogawa Yoshihiro, SHIRAFUJI Keigo, TAKAHASHI Wataru
Принадлежит:

A capacity control valve includes a valve housing provided with a discharge port, suction ports, and a control port and a primary valve including a primary valve seat and a primary valve body driven by a solenoid, the primary valve being configured to open and close a communication between the discharge port and the control port in accordance with a movement of the primary valve body. The capacity control valve further includes a differential CS valve which is openable and closable by a pressure difference between the control pressure Pc and the suction pressure Ps and an electromagnetic CS valve that is openable and closable so as to close the control port and the suction port in a non-energized state of the solenoid in accordance with the movement of the primary valve body. 1. A capacity control valve comprising:a valve housing provided with a discharge port allowing a discharge fluid of a discharge pressure to pass therethrough, a suction port allowing a suction fluid of a suction pressure to pass therethrough, and a control port allowing a control fluid of a control pressure to pass therethrough;a primary valve including a primary valve seat and a primary valve body driven by a solenoid, the primary valve being configured to open and close a communication between the discharge port and the control port in accordance with a movement of the primary valve body;a differential CS valve that is openable and closable by a pressure difference between the control pressure and the suction pressure; andan electromagnetic CS valve that is openable and closable so as to close the control port and the suction port in a non-energized state of the solenoid in accordance with the movement of the primary valve body.2. The capacity control valve according to claim 1 ,wherein a differential CS valve body of the differential CS valve partially constitutes an electromagnetic CS valve seat of the electromagnetic CS valve.3. The capacity control valve according to claim 2 ,wherein the ...

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Номер записи: 87
28-04-2016 дата публикации

PRESSURE AND FLOW COMPENSATED HYDRAULIC SYSTEM

Номер: US20160116053A1
Автор: HOLLAND MICHAEL A., Knight Jesse R., Nystrom Dwayne A.
Принадлежит:

A vehicle hydraulic system includes a transmission lube circuit, a variable displacement main pump having an inlet, and a variable displacement charge pump having an outlet and a pressure responsive displacement control unit. The system also includes a charge line communicating the charge pump outlet with the main pump inlet, a sensing line communicating the charge line with the displacement control unit, and a lube line communicating the charge pump outlet with the lube circuit. The lube line includes a fluid restriction. A hydraulic oil filter and a filter bypass valve are connected in parallel between the outlet of the charge pump and the charge line. 1. A vehicle hydraulic system comprising:a transmission lube circuit;a main pump;a variable displacement charge pump for supplying charge fluid to the main pump, the charge pump having an outlet and a pressure responsive displacement control unit;a charge line communicating the charge pump outlet with an inlet of the main pump;a sensing line communicating the charge line with the displacement control unit;a lube line communicating the charge pump outlet with the lube circuit; anda fluid restriction in the lube line.2. The vehicle hydraulic system of claim 1 , wherein:the main pump is a variable displacement pump.3. The vehicle hydraulic system of claim 1 , further comprising:a transmission pump having an inlet connected to the charge line and having an outlet connected to a transmission control circuit.4. The vehicle hydraulic system of claim 1 , further comprising:a hydraulic oil filter connected between the outlet of the charge pump and the charge line; anda filter bypass valve connected between the outlet of the charge pump and the charge line.5. The vehicle hydraulic system of claim 1 , further comprising:a brake valve reservoir supply line connected between the charge line and a brake valve; anda further fluid restriction in the brake line.6. The vehicle hydraulic system of claim 3 , wherein:the transmission ...

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Номер записи: 88
09-06-2022 дата публикации

CAPACITY CONTROL VALVE

Номер: US20220178461A1
Автор: Fukudome Kohei, Hayama Masahiro, Kanzaki Toshinori, SHIRAFUJI Keigo, TAKAHASHI Wataru
Принадлежит:

A capacity control valve in which control precision is high is provided. A capacity control valve V includes a valve housing provided with a suction port through which a suction fluid of suction pressure Ps passes, and a control port through which a control fluid of control pressure Pc passes, a pressure drive portion that receives a force in the contracting direction from the suction fluid, and a main valve formed by a valve element that receives a force in the valve opening direction from the pressure drive portion, and a valve seat with and from which the valve element is brought into contact and separated. The valve element is arranged to receive a force in the closing direction from the control fluid. 1: A capacity control valve comprising:a valve housing provided with a suction port through which a suction fluid of suction pressure passes, and a control port through which a control fluid of control pressure passes;a pressure drive portion that receives a force in a contracting direction from the suction fluid, the contracting direction being a direction in which the pressure drive portion is contractable; anda main valve formed by a valve element that receives a force in a valve opening direction of the main valve from the pressure drive portion, and a valve seat with and from which the valve element is brought into contact and separated, whereinthe valve element is arranged to receive a force in a valve closing direction of the main valve from the control fluid.2: The capacity control valve according to claim 1 , whereina through hole is formed in the valve housing, and a rod that transmits the force in the valve opening direction of the main valve from the pressure drive portion to the valve element is slidably fitted into the through hole.3: The capacity control valve according to claim 1 , whereina spring that biases the valve element in the valve closing direction of the main valve is arranged in the valve housing.4: The capacity control valve according ...

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Номер записи: 89
13-05-2021 дата публикации

PUMP SYSTEM, DIALYSIS MACHINE, AND METHOD OF OPERATING A PUMP

Номер: US20210138139A1
Автор: Hedmann Frank, HOCHREIN Torsten, SEBESTA Sven
Принадлежит: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH

The present invention relates to a pump system for generating a volume flow of dialysis solution in a dialysis machine, wherein the pump system comprises at least one piston pump whose piston cooperates with a working fluid that in turn exerts force on a conveying means, in particular on a membrane, wherein setting means are provided by which the conveying volume of the piston pump per piston stroke can be reduced, with the setting means comprising a position-variable mechanical piston stop to reduce the piston stroke and/or means to reduce the quantity of the working fluid and/or means to reduce the volume of the conveying chamber that cooperates with the conveying means and that contains the dialysis solution to be conveyed. 1. A pump system for generating a volume flow of dialysis solution in a dialysis machine , wherein the pump system comprises at least one piston pump whose piston cooperates with a working fluid that in turn exerts force on a conveying means , in particular on a membrane , characterized in that setting means are provided by which the conveying volume of the piston pump per piston stroke can be reduced , with the setting means comprising a position-variable mechanical piston stop to reduce the piston stroke and/or means to reduce the quantity of the work fluid and/or means to reduce the volume of the conveying chamber that cooperates with the conveying means and that contains the dialysis solution to be conveyed.2. A pump system in accordance with claim 1 , characterized in that the working fluid is a liquid or a gas.3. A pump system in accordance with claim 1 , characterized in that input means or calculation means are provided by which the total desired conveying volume or the residual desired conveying volume from a specific point in time onward or the desired conveying volume per piston stroke can be input or determined and the setting means are connected to the input means or to the calculation means such that the setting means are ...

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Номер записи: 90
17-07-2014 дата публикации

METHOD AND DEVICE FOR MEASURING AND CONTROLLING AMOUNT OF LIQUID PUMPED

Номер: US20140199183A1
Автор: Nazarbolandjahromi Hossein, Taravat Mohsen
Принадлежит: SMART WATER METERING INC.

The embodiments herein disclose a method and system for measuring and controlling an amount of flow and volume of liquid/fluid and/or electrical energy. The method and system obtains a plurality of values for the electrical parameters of an electro-pump, including voltage value, current value and active/reactive energy value; calculates the plurality values; and determines and controls the amount of instant flow and volume of the liquid/fluid based on the calculated values. The system/method gathers these two measuring and controlling features such as measuring and controlling the volume of liquid and amount of energy in one casing, thereby providing a secure reference for both the parameters at the same time for underground water resources. 1. A method for measuring an amount of flow and/or a volume of liquid that is pumped/transferred by a pump , wherein said method comprises:continuously measuring an instant power consumed by a pump;continuously measuring an instant rotational speed of said pump;continuously calculating and updating an amount of said liquid pumped/transferred; andcontinuously monitoring, updating, displaying and/or recording an amount of liquid consumption.2. The method according to claim 1 , wherein said calculating and updating comprises the steps of:calibrating a Flow-Power curve of said pump in a constant rotational speed;measuring an instant rotational speed of said pump and correcting said calibrated flow-power curve of said pump;obtaining an amount of flow from the corrected calibrated flow-power curve of said pump by locating an instant power on said corrected calibrated flow power curve; andcontinuously calculating a volume of pumped/transferred liquid by taking a time integral of the amount of flow.3. The method according to claim 2 , wherein said calibrating the Flow-Power curve comprises the steps of:taking a predetermined flow-power curve of said pump as a first input data;taking one or more operational conditions of said pump as a ...

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Номер записи: 91
14-05-2015 дата публикации

PUMP AND HYDRODYNAMIC RETARDER EQUIPPED WITH SAID PUMP AND GEAR UNIT EQUIPPED WITH SUCH A PUMP

Номер: US20150129363A1
Автор: Wanninger Heinz
Принадлежит:

A pump has a pressure chamber and a control ring which is mounted to pivot about a pivoting axis and which undergoes a pivoting motion. The control ring can be pivoted about a deflection angle during its pivoting movement. An aperture is provided in the pressure chamber of the pump. The aperture opens or closes to varying degree based on the pivoting motion of the control ring. In a hydrodynamic retarder with such a pump, a lubricating and cooling medium is supplied at least to bearings of rotating components of the retarder. Differentiated lubrication and cooling, at least of the bearings, can be brought about during braking operation and during non-braking operation of the retarder. 112-. (canceled)1330. A pump () comprising:{'b': 42', '38', '40, 'a pressure chamber () and a control ring () which is mounted to pivot about a pivoting axis () and undergoes a pivoting motion, and the control ring during pivoting motion being pivotable through a deflection angle,'}{'b': 50', '50', '50', '50', '50', '42', '30', '50', '50', '50', '50', '50, 'i': a,', 'b,', 'c,', 'd', 'a,', 'b,', 'c,', 'd, 'an aperture (, ) being provided in the pressure chamber () of the pump () and, due to the pivoting motion of the control ring, the aperture (, ) either opening or closing to various extents.'}14303830. The pump () according to claim 13 , wherein the deflection angle of the pivoting motion of the control ring () is a function of a rotational speed of the pump ().1530384438405050505050a,b,c,d. The pump () according to claim 13 , wherein the control ring () is acted upon by a spring force of a compression spring () and when the deflection angle of the control ring () about the pivoting axis () is at a minimum claim 13 , the aperture ( claim 13 , ) is either at least mostly or completely closed claim 13 , and{'b': '38', 'when the deflection angle of the control ring () against the spring force of the compression spring is at a maximum, the aperture is open to a maximum extent.'} ...

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Номер записи: 92
04-05-2017 дата публикации

Cylinder Head Assembly For Reciprocating Compressor

Номер: US20170122302A1
Автор: BERGMAN Ernest R., BLAKE Adam Michael, SCHROEDER Brian G., SCHULTZ NAVARA Michael R.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a housing, a piston, and a cylinder head assembly. The housing defines a cylinder and a first valve seat defining a recess. The piston is movable within the cylinder to define a compression chamber. The cylinder head assembly is mounted on the housing and includes a valve plate, a suction valve, a discharge valve and a head cover. The valve plate may be mounted to the mounting surface and may include a suction plenum, a suction passage providing fluid communication between the suction plenum and the cylinder, and a discharge passage. The suction valve can seat on the first valve seat to allow fluid flow through the suction passage. The head cover may include a discharge chamber and an integrally formed guide post extending into the discharge chamber. The guide post may include a pocket that receives a discharge valve stem for reciprocation therein. 1. A compressor comprising:a housing defining a cylinder, a mounting surface surrounding the cylinder, and a first valve seat defining at least one recess extending between the mounting surface and the first valve seat;a piston disposed within the housing and movable within the cylinder to define a compression chamber within the cylinder;a valve plate mounted to the mounting surface and including a suction plenum, a suction passage providing fluid communication between the suction plenum and the cylinder, a second valve seat through which the suction passage extends, and a discharge passage extending through the valve plate; anda suction valve having an annular main body and a plurality of lobes extending radially outward from the main body, the suction valve being movable between a first suction-valve-position in which the lobes are seated on the first valve seat to allow fluid flow through the suction passage and a second suction-valve-position in which the main body is seated on the second valve seat to restrict fluid flow through the suction passage.2. The compressor of claim 1 , wherein the ...

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Номер записи: 93
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: 94
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: 95
24-07-2014 дата публикации

DETERMINING TOP-DEAD-CENTER (TDC) OF RECIPROCATING COMPRESSOR

Номер: US20140205471A1
Автор: Howard Brian Francis
Принадлежит: GENERAL ELECTRIC COMPANY

Various embodiments include approaches for determining a top-dead-center (TDC) of a reciprocating compressor. In some cases, an apparatus includes: a pressure transducer configured to measure pressure fluctuations inside a compressor cylinder and convert the pressure fluctuations into an asynchronous waveform; and at least one computing device operably connected with the pressure transducer, the at least one computing device configured to: extract a data set representing piston angles over a single revolution of a piston within the compressor cylinder from the asynchronous waveform; remove data representing invalid piston angles from the data set to form a refined data set; determine an average piston angle for the single revolution from the refined data set; and adjust the refined data set to identify a top-dead-center (TDC) position of the piston within the compressor cylinder. 1. An apparatus comprising:a pressure transducer configured to measure pressure fluctuations inside a compressor cylinder and convert the pressure fluctuations into an asynchronous waveform; and extract a data set representing piston angles over a single revolution of a piston within the compressor cylinder from the asynchronous waveform;', 'remove data representing invalid piston angles from the data set to form a refined data set;', 'determine an average piston angle for the single revolution from the refined data set; and', 'adjust the refined data set to identify a top-dead-center (TDC) position of the piston within the compressor cylinder., 'at least one computing device operably connected with the pressure transducer, the at least one computing device configured to2. The apparatus of claim 1 , wherein the at least one computing device is configured to remove the data representing invalid piston angles from the data set by identifying and excluding piston angles based upon a compression ratio of the single revolution of the piston within the compressor cylinder.3. The apparatus of ...

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Номер записи: 96
25-08-2022 дата публикации

PUMP SYSTEM WITH OVER-TEMPERATURE PREVENTION

Номер: US20220268272A1
Автор: ANDERSON Evan W., KRANE Steve A., POLLEE Dean R., Rapin Daniel P.
Принадлежит:

A pump system including a prevention mechanism for preventing excessive fluid temperature buildup of system fluid. The overheat prevention mechanism includes a thermally-responsive control component () made with a thermally-responsive material. The thermally-responsive control component is located in the pump system () such that the thermally-responsive material is in thermal communication with the system fluid for effecting a change in temperature of the thermally-responsive material. The thermally-responsive material is configured to have an activation temperature that is a predefined amount less than a maximum operating temperature of the system fluid. The thermally-responsive control component is configured to cooperate with a pump control mechanism in the system to decrease pump output pressure in response to the thermally-responsive material being heated by the fluid to a temperature that is equal to or greater than the activation temperature of the thermally-responsive material. 1. A hydraulic pump system , comprising:a variable displacement hydraulic pump for pumping hydraulic fluid;a fluid-operated control fluidly connected to the hydraulic pump and configured to increase or decrease pump displacement in response to a hydraulic fluid pressure of the system being communicated to the fluid-operated control; anda thermally-responsive control component made with a thermally-responsive material, the thermally-responsive control component being located in the hydraulic pump system such that the thermally-responsive material is in thermal communication with the hydraulic fluid flowing through the hydraulic pump system for effecting a change in temperature of the thermally-responsive material;wherein the thermally-responsive material is configured to have an activation temperature that is a predefined amount less than a maximum operating temperature of the hydraulic fluid flowing through the hydraulic pump system; andwherein the thermally-responsive control ...

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Номер записи: 97
25-04-2019 дата публикации

Variable controlled reciprocation device for fluids

Номер: US20190120215A1
Автор: Antonio Cannata
Принадлежит: Tonand Inc

An axial reciprocation device having a main piston and an anchor piston coupled to one another via a swivel joint interconnecting 20 a pair of connecting rods, the main piston positioned in a main cylinder bore and the anchor piston positioned in an anchor piston bore of a housing, such that the main piston is configured for axial reciprocation in the main cylinder bore; wherein variable positioning of the anchor piston along the anchor piston bore results in variable displacement of the main piston of hydraulic fluid with respect to an inlet/outlet port of the housing.

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Номер записи: 98
14-05-2015 дата публикации

Reinforced Smart Mud Pump

Номер: US20150132152A1
Автор: Lazzara Gerard S.
Принадлежит:

A pump system for movement of fluids having a reciprocating piston power pump having at least three reciprocating pistons operable to displace fluid from a housing having a pumping chamber, an integrally forged crankshaft operably connected to the pistons, at least one sensor operable to sense ambient conditions on the pump, and a computer control for processing data from the sensor to regulate the operation of the pump in response to the data. The system also utilizes protective infused treatments for lubricity and enhanced lubrication sprayers and a reset relief valve and pressure sensors operably connected to the computer system for control and monitoring of the pump. 115-. (canceled)16. A mud pump system for movement of fluids comprising:a reciprocating piston power pump having at least three reciprocating pistons operable to displace fluid from a housing having a pumping chamber;a crankshaft and integrally extended cams forged from a single ingot by repetitive open hammer forging generating a tensile strength of approximately 200,000 p.s.i;at least one sensor operable to sense pressure spikes on said pump; anda computer control for processing data from said sensor to modulate the pump and activate a relief valve in response to said pressure spikes.17. The pump system as claimed in further comprising a reset relief valve operably connected to said pump and actuatable in response to a predetermined pressure.18. The pump system as claimed in further comprising a reset relief valve operably connected to said pump actuatable in response to a sensor in communication with said control.19. The pump system as claimed in further comprising data logging of historical pump activity through said control.20. The pump system as claimed in wherein said pump speed may be operably controlled in response to said data.21. The pump system as claimed in wherein said put p speed may be operably controlled in response to said tranducer.22. The pump system as claimed in further ...

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Номер записи: 99
27-05-2021 дата публикации

ELECTROSPINNING APPARATUS FOR PRODUCING ULTRAFINE FIBERS HAVING IMPROVED CHARGED SOLUTION CONTROL STRUCTURE AND SOLUTION TRANSFER PUMP THEREFOR

Номер: US20210156050A1
Автор: Huh Woong, Hwang Woong-June, Lee Youn-Chang, Park Jong-Su
Принадлежит:

An electrospinning apparatus for producing ultrafine fibers according to the present invention comprises: a cylindrical metal guide disposed to surround a hollow tube needle, which receives a charged solution and discharges the charged solution in the form of a filament, wherein a high voltage is applied to the cylindrical metal guide to control droplet stability of the charged solution; and a strip-shaped metal guide including a plurality of strip-shaped metal plates, which extend outward from the cylindrical metal guide and are radially arranged to control the direction of a charged filament, whereby discharge droplets of the charged solution are stably maintained, and the charged filament formed therefrom maintains a constant directionality with respect to a substrate, so that a uniform pattern having ultrafine fibers can. be manufactured on a collection part. 1. An electrospinning apparatus for producing ultrafine fibers , comprising:a high voltage supplier to apply high voltage to a spinning nozzle to charge a solution containing a dissolved polymer material;the spinning nozzle including at least one hollow needle to receive the charged solution and jet the charged solution in the form of filaments;a cylindrical metal guide positioned around the hollow needle at the lower end of the spinning nozzle, wherein high voltage is applied to the cylindrical metal guide to control droplet stability of the charged solution; anda collector positioned under the spinning nozzle to collect charged filaments.2. The electrospinning apparatus for producing ultrafine fibers according to claim 1 , wherein the cylindrical metal guide has a lower end positioned 1 mm or more and less than 5 mm higher than a tip of the hollow needle.3. The electrospinning apparatus for producing ultrafine fibers according to claim 2 , further comprising:a strip-shaped metal guide including a plurality of strip-shaped metal plates radially arranged around the cylindrical metal guide and extending in a ...

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Номер записи: 100