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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 25689. Отображено 100.
05-01-2012 дата публикации

Electric compressor controller

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

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

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08-11-2017 дата публикации

Устройство для регулирования производительности поршневого компрессора

Номер: RU0000174869U1

Полезная модель относится к поршневым компрессорам. В устройстве для регулирования производительности дополнительная полость 2 и рабочая полость 4 цилиндра сообщаются через отверстие 5 в крышке 3 и установленные в корпусе 1 седло 6 клапана и подвижный запорный элемент 7 клапана. На свободном торце корпуса 1 установлен пневматический мембранный механизм 8, содержащий эластичную мембрану 9 и опорный диск 11. С седлом 6 клапана неразъемно соединен радиальными ребрами 14 цилиндрический стакан 15, у которого внутренняя полость 16 открыта со стороны запорного элемента 7, а в запорном элементе 7 по его оси выполнено ответное стакану 15 цилиндрическое гнездо 17. Во внутренней полости 16 установлена винтовая пружина сжатия 18. Подвижный запорный элемент 7 штоком 19 соединен с опорным диском 11. Обеспечивается упрощение конструкции и повышение надежности устройства, а также повышение точности сопряжения подвижного запорного элемента 7 с седлом 6 клапана. Ц 1 174869 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ 1 11 се ао за а (1 7 ВУ 174 889 1 (51) МПК ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ РОЯВ 49/03 (2006.01) (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2016146036, 23.11.2016 (24) Дата начала отсчета срока действия патента: 23.11.2016 Дата регистрации: 08.11.2017 Приоритет(ы): (22) Дата подачи заявки: 23.11.2016 (45) Опубликовано: 08.11.2017 Бюл. № 31 Адрес для переписки: 353204, Краснодарский край, ст-ца Динская, а/я 28, для ООО "Тегас", патентоведу Ежак А.Н. (72) Автор(ы): Ворошилов Игорь Валерьевич (КП) (73) Патентообладатель(и): Общество с ограниченной ответственностью "Гегас" (КО) (56) Список документов, цитированных в отчете о поиске: ФРЕНКЕЛЬ М.И. ПОРШНЕВЫЕ КОМПРЕССОРЫ, Л.Машиностроение, 1969, с.587-592. ЗЧ 1160109 А\Т, 07.05.1985. 5Ц 1092298 А, 15.05.1984. РЕ 612250 С, 16.04.1935. (54) УСТРОЙСТВО ДЛЯ РЕГУЛИРОВАНИЯ ПРОИЗВОДИТЕЛЬНОСТИ ПОРШНЕВОГО КОМПРЕССОРА (57) Реферат: Полезная модель относится к поршневым компрессорам. В устройстве для регулирования ...

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05-12-2018 дата публикации

Компрессор переменного давления

Номер: RU0000185469U1

Полезная модель относится к области компрессоростроения, в частности к компрессорам переменного давления с регулируемой скоростью изменения давления в системе, применяемым, в частности в массажной и терапевтической медицинской технике. Компрессор переменного давления содержит насос, шаговый двигатель и блок управления шаговым двигателем. Технический результат заключается в стабилизации заданной частоты работы компрессора с сохранением высокого тягового усилия электропривода во всем частотном диапазоне работы компрессора. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 185 469 U1 (51) МПК A61H 23/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК A61H 23/00 (2018.08); F04B 49/06 (2018.08) (21)(22) Заявка: 2018118412, 18.05.2018 (24) Дата начала отсчета срока действия патента: 05.12.2018 Приоритет(ы): (22) Дата подачи заявки: 18.05.2018 (45) Опубликовано: 05.12.2018 Бюл. № 34 (54) КОМПРЕССОР ПЕРЕМЕННОГО ДАВЛЕНИЯ (57) Реферат: Полезная модель относится к области компрессоростроения, в частности к компрессорам переменного давления с регулируемой скоростью изменения давления в системе, применяемым, в частности в массажной и терапевтической медицинской технике. Компрессор переменного давления содержит R U 1 8 5 4 6 9 (56) Список документов, цитированных в отчете о поиске: CN 202707446 U, 30.01.2013. US Стр.: 1 5501650 A, 08.09.1993. EP 1241355 B1, 06.06.2007. RU 112626 U1, 20.01.2012. EA 26979 B1, 30.06.2017. U 1 U 1 Адрес для переписки: 249039, Калужская обл., г. Обнинск, а/я 9004, Чабань Ю.М. 1 8 5 4 6 9 (73) Патентообладатель(и): ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ НАУЧНО-ПРОИЗВОДСТВЕННАЯ КОМПАНИЯ "ИННОВАЦИОННОЕ МЕДИЦИНСКОЕ ОБОРУДОВАНИЕ" (RU) Дата регистрации: R U 18.05.2018 (72) Автор(ы): Бутов Олег Владиславович (RU), Лопунов Алексей Иванович (RU) насос, шаговый двигатель и блок управления шаговым двигателем. Технический результат заключается в стабилизации заданной частоты работы компрессора с сохранением ...

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12-01-2012 дата публикации

Rinsing device and method for the operation thereof

Номер: US20120006415A1
Автор: Thomas Baur
Принадлежит: Individual

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

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08-10-2021 дата публикации

Блок питания гидравлической системы самолета

Номер: RU0000207050U1

Полезная модель относится к бортовым источникам гидравлической энергии. Заявляемый блок питания гидравлической системы самолета предназначен для выработки энергии, использующейся для работы самолетных подсистем.Технические результаты предлагаемой полезной модели заключаются в расширении энергетических возможностей блоков питания гидравлических систем самолета, содержащим гидробак малого объема, за счет обеспечения возможности введения дополнительных некомпенсированных потребителей, с целью использования блока питания для гидропитания потребителей гидравлических систем с суммарным некомпенсированным объемом, близким к объему гидробака при появлении в системе дополнительных некомпенсированных потребителей, а также в экономии ресурса насосной станции за счет снижения частоты включения и, таким образом, продления ее календарного срока службы.Технические результаты обеспечиваются тем, что блок питания гидравлической системы включает в себя насосную станцию, в состав которой входят электроприводной гидронасос, электрогидрокран и гидробак малого объема, питающий гидронасос, основную напорную линию между электрогидрокраном и выходом электроприводного гидронасоса, линию слива рабочей жидкости в гидробак, а также по крайней мере одну дополнительную напорную линию высокого давления, в состав которой входит, в частности, гидроаккумулятор. Гидроаккумулятор состоит из корпуса, разделенного плавающим плунжером на две полости, одна из которых заполнена газом, а вторая разделена перегородкой на две гидравлические камеры одинаковой вместимости - высокого и низкого давления, причем плавающий плунжер связан тягой, проходящей через перегородку, с поршнем, расположенным в гидравлической камере низкого давления. Дополнительная напорная линия высокого давления снабжена также обратным клапаном и клапаном зарядным, соединенным с газовой полостью гидроаккумулятора. При этом гидравлическая камера высокого давления гидроаккумулятора соединена с первым сигнализатором и обратным клапаном, ...

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26-01-2012 дата публикации

Product delivery and monitoring system

Номер: US20120018448A1
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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02-02-2012 дата публикации

Fluid working machine and method of operating a fluid working machine

Номер: US20120023918A1
Принадлежит: Artemis Intelligent Power Ltd

A fluid working machine comprises a working chamber of cyclically varying volume, a high pressure manifold, and an actuated high pressure valve for regulating the flow of fluid between the working chamber and the high pressure manifold. The actuated high pressure valve comprises a moveable valve member, operable between a closed position and at least one open position. A controllable opening mechanism provides an active urging force to urge the moveable valve member from the said closed position towards at least one said open position, the volume of the working chamber varying between a maximum volume and a minimum volume. The controllable opening mechanism provides the active urging force more than once while the volume of the working chamber is intermediate the maximum of chamber volume and the minimum of chamber volume.

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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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15-03-2012 дата публикации

Control Algorithm of Variable Speed Pumping System

Номер: US20120063921A1
Принадлежит: Individual

A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive the pump. A value indicative of flow rate of water is determined and the motor is controlled to adjust the flow rate indicative value toward a constant. A value indicative of flow pressure is determined and the motor is controlled to adjust the flow pressure indicative value toward a constant. A selection is made between flow rate control and flow pressure control. In another aspect, the pump is controlled to perform a first operation, and is operated to perform a second water operation. Control of operation of the pump to perform the first water operation is altered in response to operation of the pump to perform the second operation.

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29-03-2012 дата публикации

Valve actuator control system and method of use

Номер: US20120073670A1
Автор: David Lymberopoulos
Принадлежит: Safoco Inc

A valve actuator control system for use with a valve actuator may include two pump assemblies, two control valve assemblies, two transducers, a fluid reservoir, and a controller assembly. The controller assembly may actuate the pump assemblies to direct fluid from the fluid reservoir to the valve actuator, and may actuate the control valve assemblies to direct fluid from the valve actuator to the fluid reservoir. A method of actuating a valve actuator using a valve actuator control system may comprise sending a signal to the valve actuator control system, injecting pressurized fluid from a fluid reservoir of the valve actuator control system into a first chamber of the valve actuator, discharging pressurized fluid from a second chamber of the valve actuator into the fluid reservoir, and actuating the valve actuator from a first position to a second position.

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26-04-2012 дата публикации

Bootstrap accumulator system with telescoping actuator cylinder

Номер: US20120097021A1
Принадлежит: Hamilton Sundstrand Corp

A bootstrap accumulator system includes an actuator cylinder that drives an accumulator piston through a multiple of nested actuator sleeves, comprising a multistage actuator cylinder.

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03-05-2012 дата публикации

Pump motor control assembly

Номер: US20120104878A1
Принадлежит: Nidec Motor Corp

A pump motor assembly operable to provide driving power to a fluid pump includes a rotor, a stator, a case housing the rotor and the stator, and a control assembly mounted to the case and operable to control motor operation. The control assembly includes an information display and a cover overlying the display, with a window section in general alignment with the display. The control assembly also includes a filler plate underlying the window section to prevent any air gap along an underside thereof, allowing the display to be visible while reducing the risk of condensation buildup. The control assembly further includes a low voltage housing with the display disposed in a first compartment defined thereby, and a high voltage housing with a high voltage component disposed in a second compartment defined thereby. The low voltage housing includes a thermal and fluid barrier that substantially fluidly separates the first and second compartments to reduce the risk of liquid electrical conduction therebetween and to reduce heat transfer into the low voltage housing.

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24-05-2012 дата публикации

Refrigeration Cycle

Номер: US20120125041A1
Принадлежит: Individual

Provided is a refrigeration cycle suitable for an air conditioning system for vehicles, wherein a flow rate of refrigerant which is used to estimate a torque of a compressor can be precisely estimated by accurately detecting a difference between pressures at upstream and downstream sides of an orifice having a high correlation with the refrigerant flow rate, and ultimately, the torque of the compressor can be precisely estimated, and the estimation can be achieved while achieving space saving and cost down. Disclosed is a refrigeration cycle which has a subcool condenser integrally provided with a condensing part for refrigerant, a liquid receiver and a subcooling part, and wherein an orifice for throttling the flow of refrigerant which has passed through the condensing part of the subcool condenser is disposed, a pressure difference detection means capable of detecting a difference between pressures at upstream and downstream sides of the orifice is provided, and provided are a refrigerant flow rate estimation means for estimating a flow rate of the refrigerant with reference to the detected pressure difference and a compressor torque estimation means for estimating a torque of the compressor with reference to the estimated flow rate of the refrigerant.

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31-05-2012 дата публикации

Character parameters obtaining method for displacement control mechanism of hydraulic pump and detecting device for carrying out the method

Номер: US20120134849A1
Автор: Xiang Zhou, Xianli Cao

A character parameters obtaining method for a displacement control mechanism of a hydraulic pump and a detecting device for carrying out the method are disclosed. The method involves constructing a hydraulic system; outputting hydraulic energy by the hydraulic pump driven by a primary motor; detecting pressure of a displacement control mechanism; obtaining middle parameters by obtaining the time required for preset change of the pressure at the output end of the displacement control mechanism; obtaining character parameters of the displacement control mechanism according to the middle parameters. The method can obtain the character parameters of the displacement control mechanism by the pressure detection, so that the performance of the displacement control mechanism can be judged according to the obtained character parameters. The method avoids the need of obtaining the output flow of the hydraulic pump so as to eliminate the problem caused by using a flow meter or using an obliquity sensor to obtain the character parameters.

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14-06-2012 дата публикации

Pump Control and Method

Номер: US20120148419A1
Автор: Randal S. Aspen
Принадлежит: AY McDonald Manufacturing Co

A pump control ( 20 ) and method are provided for controlling a pump ( 16 ) for a pressurized liquid supply system ( 10 ). The pump control ( 20 ) includes a controller ( 38 ) configured to provide at least two selectable modes of pump operation as follows: a flow start mode wherein the controller ( 38 ) starts the pump ( 16 ) in response to a desired start flow rate of the liquid in the system ( 10 ) and stops the pump ( 16 ) in response to a desired stopping low flow rate of the liquid in the system; and a pressure start mode wherein the controller ( 38 ) starts the pump ( 16 ) in response to a desired start pressure of the liquid in the system ( 10 ) and stops the pump ( 16 ) in response to the desired stopping low flow rate.

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19-07-2012 дата публикации

Compressor overload protection device

Номер: US20120183414A1
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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09-08-2012 дата публикации

Direct metering fuel system with constant servo flow

Номер: US20120199206A1
Принадлежит: Honeywell International Inc

A direct metering fuel supply system includes a fuel pump, a burn flow fuel line, a servo flow fuel line, and a servo regulator. The fuel pump is adapted receive pump commands representative of a commanded fuel flow rate and is configured, in response to the pump commands, to discharge fuel at the commanded fuel flow rate. The burn flow fuel line is in fluid communication with the pump to receive a first portion of the fuel discharged therefrom. The servo flow fuel line is in fluid communication with the pump to receive a second portion of the fuel discharged therefrom. The servo regulator is mounted on the servo flow fuel line and configured to maintain fuel flow rate in the servo flow fuel line at a substantially constant fuel flow rate regardless of fuel flow rate in the burn flow fuel line.

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16-08-2012 дата публикации

Method for Establishing Cavitation in Hydrostatic Devices and Control Device

Номер: US20120204627A1
Принадлежит: ROBERT BOSCH GMBH

A method for detecting cavitation in a hydrostatic system includes capturing an oscillation typical for the cavitation from a pressure captured over time. Furthermore, the method includes establishing an evaluation variable for cavitation on the basis of the captured oscillation. Additionally, the method includes comparing the evaluation variable to a comparison value.

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20-09-2012 дата публикации

Air conditioning apparatus

Номер: US20120234030A1
Принадлежит: Mitsubishi Heavy Industries Ltd

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

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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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08-11-2012 дата публикации

Method, apparatus, and computer-readable storage medium for controlling torque load of multiple variable displacement hydraulic pumps

Номер: US20120282115A1
Принадлежит: Caterpillar Inc

Methods, apparatuses, and computer program products for controlling the torque load of multiple variable displacement hydraulic pumps are described herein. A pump displacement limit for each variable displacement hydraulic pump is determined using a nonlinear control law to limit the total pump torque load of the variable displacement hydraulic pumps on the engine. The value of the actual pump displacement of each variable displacement hydraulic pump is controlled based upon the respective determined pump displacement limit.

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08-11-2012 дата публикации

Method and apparatus for controlling multiple variable displacement hydraulic pumps

Номер: US20120283882A1
Принадлежит: Caterpillar Inc

A method and apparatus for controlling discharge pressure and pump displacement of a plurality of variable displacement hydraulic pumps having connected discharge ports is provided. Each pump includes a swashplate and a control valve for controlling an angle of inclination of the swashplate. A desired first pump displacement control law is determined for a first pump and determined a desired second pump discharge pressure control law for a second pump. The first control law is used to determine a first intermediate control variable. The second control law is used to determine a second intermediate control variable. The control of the first and second pumps are combined using the first and second intermediate control variables. A desired first control valve setting for the control valve of the first pump is determined using the combined first and second intermediate control variables and the first control law. A desired second control valve setting for the control valve of the second pump is determined using the combined first and second intermediate control variables and the second control law.

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15-11-2012 дата публикации

Apparatus Using Electronically-Controlled Valves

Номер: US20120285554A1
Принадлежит: Fluke Corp

The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels.

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20-12-2012 дата публикации

Pump controller

Номер: US20120321484A9
Принадлежит: XYLEM IP HOLDINGS LLC

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

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27-12-2012 дата публикации

Gas boosters

Номер: US20120325080A1
Принадлежит: Fluke Corp

One or more examples of the gas boosters described herein aim to provide a light weight gas booster configured to produce high output pressure levels at high volumes. Generally described, one or more examples of the gas boosters reduce the dead volume in a piston assembly, thereby increasing the ratio of the output pressure to the input pressure. In that regard, several examples of the gas boosters disclosed herein have a first check valve as a disk-type check valve or the like and a second check valve as a ball-type check valve or the like. Furthermore, one or more examples include an inwardly acting cam configured to convert rotary motion to reciprocating motion by an inner surface thereof.

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03-01-2013 дата публикации

Linear compressor

Номер: US20130004335A1
Принадлежит: LG ELECTRONICS INC

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

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03-01-2013 дата публикации

System and method for driving a pump

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

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

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21-02-2013 дата публикации

Smart Blow-Down System for Variable Frequency Drive Compressor Units

Номер: US20130045118A1
Принадлежит: Quincy Compressor LLC

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

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14-03-2013 дата публикации

Liquid feed pump and circulation pump

Номер: US20130064683A1
Принадлежит: Seiko Epson Corp

A pump chamber is connected to an outlet-side buffer chamber via an outlet channel, and pumps a liquid from the outlet-side buffer chamber. A pressure vibration generated within the pump chamber when the volume of the pump chamber is decreased includes various kinds of information relating to the operating states of the liquid feed pump, such as mixing of bubbles, pumping pressure, dissolved gas amount, and liquid feed amount. Thus, it is possible to detect the pressure vibration, thereby simply and easily detecting the various kinds of information relating to the operating states of the liquid feed pump.

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14-03-2013 дата публикации

Hydraulic transport device and electrohydraulic control module

Номер: US20130064699A1

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

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28-03-2013 дата публикации

Pumping cassette

Номер: US20130074959A1
Принадлежит: Deka Products LP

A pump cassette is disclosed. The pump cassette includes a housing having at least, one fluid inlet line and at least one fluid outlet line. The cassette also includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps a fluid from the fluid inlet line to the fluid outlet line. A hollow spike is also included on the housing as well as at least one metering pump The metering pump is fluidly connected to the hollow spike on the housing and to a metering pump fluid line. The metering pump fluid line is fluidly connected to the fluid outlet line.

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18-04-2013 дата публикации

Compressor-Expander Set Critical Speed Avoidance

Номер: US20130094974A1
Принадлежит: COMPRESSOR CONTROLS CORPORATION

A control method and apparatus for critical rotational speed avoidance in a compressor-expander set in a gas refrigeration system. By varying an opening of an antisurge or recycle valve, a shaft power used by the compressor in the compressor-expander set may be varied, thereby varying the rotational speed of the compressor-expander set to move it away from its critical speed zone. Additionally, a feedforward signal may be provided by a compressor-expander set control system to cause an antisurge valve for a recycle compressor to open upon a trip or shutdown of one compressor-expander set. 19-. (canceled)10. A method of surge avoidance for a recycle compressor within a gas refrigeration system , the gas refrigeration system comprising a compressor-expander set in fluid communication with the recycle compressor , a compressor-expander set control system , a recycle compressor control system , and a recycle compressor antisurge valve , the method comprising:(a) causing the compressor-expander set to shut down;(b) sending a feedforward signal from the compressor-expander control system to the recycle compressor control system indicating a shutdown of the compressor-expander set; and(c) increasing an opening of the recycle compressor antisurge valve upon reception of the feedforward signal by the recycle compressor control system.11. The method of wherein increasing the opening of the recycle compressor antisurge valve comprises increasing the opening of the recycle compressor antisurge valve a predetermined amount.1219-. (canceled)20. An apparatus for surge avoidance for a recycle compressor comprising:(a) a gas refrigeration system with which the recycle compressor is in fluid communication;(b) a compressor-expander set in fluid communication with the recycle compressor;(c) a compressor-expander set control system;(d) a recycle compressor control system;(e) a recycle compressor antisurge valve;(f) a shutdown signal from the compressor-expander set to signal the ...

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25-04-2013 дата публикации

Altitude-dependent compressor control

Номер: US20130101437A1
Автор: Marek Engelhardt
Принадлежит: Continental Teves AG and Co oHG

A method for controlling an electrically driven compressor, which can be switched on and off as a function of demand, of a pneumatic suspension system, wherein the temperature of the compressor is calculated according to a temperature model inside a control device, and the compressor is switched on or off as a function of the calculated temperature, wherein, for the calculation of the temperature of the compressor according to the temperature model, the control device takes into account the air pressure surrounding the vehicle as an input variable, and the parameters of the temperature model are adapted as a function of this air pressure.

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25-04-2013 дата публикации

Method for Controlling and/or Regulating a Metering Pump

Номер: US20130101439A1
Принадлежит:

The present invention concerns a method of controlling and/or regulating a metering pump comprising a drive motor having a shaft driven by the motor and a displacement member arranged in a metering head, in which the rotary movement of the shaft is converted into an oscillating movement of the displacement member, wherein the displacement member, interacting with an outlet and inlet valve in alternate sequence, leads to a pump stroke (pressure stroke) and an intake stroke and thus to delivery of a medium to be metered. To provide a method of controlling and/or regulating a metering pump, which in principle manages without a position sensor on the thrust rod and can establish the metering behaviour of the pump with a high degree of precision, according to the invention it is proposed that at least one motor operating parameter, preferably a motor voltage U or a motor current I, is measured, at least one regulating parameter is calculated from the measured motor operating parameters and optionally further known motor characteristics, the at least one regulating parameter is compared to a predetermined guide parameter, and a comparison signal dependent on the result of the comparison is outputted, and can be used as a status, actuating and/or regulating signal. 1. A method of controlling and/or regulating a metering pump comprising a drive motor having a shaft driven by the motor and a displacement member arranged in a metering head , in which the rotary movement of the shaft is converted into an oscillating movement of the displacement member , wherein the displacement member , interacting with an outlet and inlet valve in alternate sequence , leads to a pump stroke (pressure stroke) and an intake stroke and thus to delivery of a medium to be metered ,characterised in thatat least one motor operating parameter, preferably a motor voltage U or a motor current I, is measured,at least one regulating parameter is calculated from the measured motor operating parameters and ...

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02-05-2013 дата публикации

Method and controller for operating a pump system

Номер: US20130108473A1
Принадлежит: ABB Oy

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

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02-05-2013 дата публикации

REMOTE PUMPING STATION MONITORING METHOD

Номер: US20130108478A1
Автор: PARKINSON Craig
Принадлежит: MULTITRODE PTY LTD

Embodiments of the invention provide techniques for managing a pumping station. Two or more pumping station profiles can be associated with a remote pumping station. The profiles can include one or more parameters related to the pumping station. One or more conditions relating to the pumping station can be measured and can cause the running of a first pumping station profile. A second pumping station profile can be run in response to the completion of the first pumping station profile. 1. A method for managing a pumping station , the method including the steps of:associating two or more pumping station profiles with the pumping station, the pumping station profiles including a plurality of parameters relating to the pumping station;measuring at least one operational and/or other condition related to the pumping station;running a first of the two or more pumping station profiles in response to a measurement of the at least one operational and/or other condition related to the pumping station; andautomatically running a second of the two or more pumping station profiles in response to the completion of the first of the two or more pumping station profiles.2. A method as claimed in wherein the method further includes the step of requesting claim 1 , using a computational device claim 1 , at least one of the two or more pumping station profiles from the pumping station.3. A method as claimed in wherein the method further includes the step of receiving claim 2 , with the computation device claim 2 , the at least one of the two or more pumping station profiles.4. A method as claimed in wherein the two or more pumping station profiles are set up and stored remotely from the pumping station.5. A method as claimed in wherein the parameters include one or more of the mode of operation of the pumping station claim 1 , the number of pumps of the pumping station claim 1 , the number of pumps in the pumping station that may operate simultaneously claim 1 , the activation set ...

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09-05-2013 дата публикации

STARTER SYSTEM FOR AN ENGINE

Номер: US20130111865A1
Принадлежит: Briggs & Stratton Corporation

A lawn mower includes an internal combustion engine, an electric motor configured to start the engine, a blade driven by the engine, and an assembly for stopping at least one of the blade and the engine. The assembly includes a brake mechanism, a release mechanism movable to an engaged position to release the brake mechanism, an interlock configured to selectively prevent the release mechanism from moving to the engaged position, and an interface allowing an operator to release the interlock to allow the release mechanism to move to the engaged position. The lawn mower further includes a switch actuated by the release mechanism and a control module coupled to the switch so that the switch provides a signal to the control module when the release mechanism is in the engaged position and the control module turns on the electric motor in response to the signal to start the engine. 1. A lawn mower , comprising:an internal combustion engine;an electric motor configured to start the internal combustion engine;a blade driven by the internal combustion engine; a brake mechanism,', 'a release mechanism movable to an engaged position to release the brake mechanism,', 'an interlock configured to selectively prevent the release mechanism from moving to the engaged position, and', 'an interface allowing an operator to release the interlock to allow the release mechanism to move to the engaged position;, 'an assembly for stopping at least one of the blade and the internal combustion engine, the assembly comprisinga switch actuated by the release mechanism; anda control module coupled to the switch so that the switch provides a signal to the control module when the release mechanism is in the engaged position and the control module turns on the electric motor in response to the signal to start the internal combustion engine.2. The lawn mower of claim 1 , wherein the control module is spaced apart from the internal combustion engine.3. The lawn mower of claim 2 , wherein the switch ...

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09-05-2013 дата публикации

Calculating Downhole Pump Card With Iterations on Single Damping Factor

Номер: US20130115104A1
Автор: Pons Victoria M.
Принадлежит:

A pump apparatus has a downhole pump disposed in a wellbore and has a motor at the surface, and a rod string operatively moved by the motor reciprocates the downhole pump in the wellbore. Downhole data indicative of load and position of the downhole pump is generated using surface measurements and a wave equation model having a damping factor. Actual fluid load lines are determined from the downhole data for upstrokes and downstrokes of the downhole pump, and calculated fluid load lines for from the strokes are determined from the distribution of the load values in the downhole data. The actual fluid load lines are compared to the calculated fluid load lines to determine if the downhole data is over or under-damped. Then, the damping factor of the wave equation model can be adjusted so that new downhole data can be generated with appropriate damping. 1. A method implemented by a processing device of diagnosing a pump apparatus having a downhole pump disposed in a wellbore and having motor at a surface of the wellbore , the downhole pump reciprocated in the wellbore by a rod string operatively moved by the motor , the method comprising:generating a downhole card indicative of downhole load and downhole position of the downhole pump by using surface measurements and a wave equation model having a damping factor;determining an actual fluid load line for each of an upstroke and a downstroke of the downhole pump from the downhole card;determining a calculated fluid load line for each of the upstroke and the downstroke of the downhole pump from load values distributed on the downhole card;comparing the actual fluid load lines to the calculated fluid load lines;adjusting the damping factor of the wave equation model based on the comparison; andgenerating another downhole card based on the adjusted damping factor.2. The method of claim 1 , comprising initially obtaining the surface measurements indicative of surface load and surface position of the rod string at the surface ...

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09-05-2013 дата публикации

HYDRAULIC POWER SYSTEM

Номер: US20130115108A1
Принадлежит: SAN HITEC LTD.

A hydraulic power system comprises a hydraulic pump coupled to a brushless motor. The brushless motor may comprise stators having a plurality of windings and at least one outrunning rotor having a plurality of magnetic poles and optionally coupled to a drive shaft via flexible couplings which may be coaxial with the drive shaft and rotor. 1. A hydraulic power system comprising at least one hydraulic pump coupled to at least one brushless motor , wherein said brushless motor comprises:at least one stator having a plurality of windings; andat least one outrunning rotor having a plurality of magnetic pole;said rotor being configured to rotate around said stator thereby transmitting torque to said hydraulic pump via a drive shaft.2. The system of claim 1 , wherein said rotor is coupled to said drive shaft via at least one flexible coupling.3. The system of claim 2 , wherein said flexible coupling is coaxial with said drive shaft and said rotor.4. The system of further comprising a fluid reservoir.5. The system of further comprising a protective sleeve configured to encompass said fluid reservoir.6. The system of further comprising a pump housing.7. The system of further comprising a motor housing.8. The system of claim 6 , further comprising a motor housing claim 6 , wherein said pump housing is contiguous with the motor housing.9. The system of claim 1 , wherein said rotor comprises m magnetic poles claim 1 , said stator comprises n windings and m magnetic sensors configured to sense said magnetic poles claim 1 , and m and n equal eighteen.10. (canceled)11. (canceled)12. The system of claim 1 , wherein said hydraulic pump is selected from a group consisting of: gear pumps claim 1 , gerotor pumps claim 1 , rotary vane pumps claim 1 , screw pumps claim 1 , bent axis pumps claim 1 , axial piston pumps swashplate principle claim 1 , radial piston pumps claim 1 , and peristaltic pumps.13. The system of claim 1 , wherein said hydraulic pump comprises an inlet and outlet.14. ...

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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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23-05-2013 дата публикации

AIR COMPRESSORS

Номер: US20130126025A1
Принадлежит:

An air compressor may include a compressor unit and an external tank unit connectible with the compressor unit. The external tank unit may include an external tank and a battery. The battery may supply electric power to the compressor unit. 1. An air compressor comprising:a compressor unit configured to supply compressed air to a pneumatic tool; andan external tank unit connectible with the compressor unit;wherein the external tank unit includes:an external tank capable of storing the compressed air; anda first battery configured to supply electric power to the compressor unit.2. The air compressor according to claim 1 , wherein the compressor unit includes an air-compressing device and a second battery serving as a power source for driving the air-compressing device.3. The air compressor according to claim 2 , wherein the first battery and the second battery can be used interchangeably for supplying electric power to the air-compressing device.4. The air compressor according to claim 1 , wherein the external tank unit includes a battery charger capable of charging the first battery.5. The air compressor according to claim 1 , wherein the external tank unit is configured to be able to connect an electric device that is a different device from the compressor unit claim 1 , so that electric power can be supplied from the first battery to the electric device.6. The air compressor according to claim 1 , wherein the first battery is removably mounted to the external tank unit.7. A compressor unit used for a pneumatic tool and connectible with an external tank unit having a first storage tank and a first battery claim 1 , the compressor unit comprising:an air-compressing device configured to be electrically driven;a second battery serving as a power source for driving the air-compressing device;a second storage tank capable of storing compressed air;an input terminal electrically connected to the air-compressing device and connectible with the first battery of the ...

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23-05-2013 дата публикации

Robust electric screw compressor blocked air line detection via motor current monitoring

Номер: US20130129527A1
Автор: Marv Hamdan
Принадлежит: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC

Systems and methods for detecting a blocked air discharge line of an air compressor are described, which include monitoring motor current (IMTR) drawn by a compressor motor, and calculating a three-point moving average for a steady state current drawn by the compressor motor upon the motor reaching steady state (nominal) operating speed. After expiration of a predetermined time period T 1 that commences upon the compressor motor reaching steady state speed, a determination is made regarding whether a difference between a current drawn by the compressor motor and the three-point moving average has exceeded a predetermined current value I 2 and is consistent with a current profile indicative of a blocked air line. If a blocked air line is detected, a compressor shut-off command is generated and transmitted to the compressor motor to shut the compressor motor off prior to opening of a safety valve on the compressor.

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23-05-2013 дата публикации

Precision pump with multiple heads

Номер: US20130129529A1
Принадлежит: Integrated Designs LP

A pump for one or more different process fluids is provided including a pumping chamber having a process fluid inlet and outlet coupled to a process fluid valve on each pumping chamber for selectively preventing and allowing flow of process fluid through the pumping chamber. An actuation mechanism for pumping actuating fluid to actuating fluid chambers is provided that is in communication with the actuating fluid chambers to permit flow into each actuating fluid chamber of incompressible actuating fluid. A diaphragm separates each pumping chamber from an associated actuating fluid chamber for separating process fluid from actuating fluid. The actuation mechanism is removable by a quick disconnect that provides for disconnection of the activation mechanism without affecting process fluid. Operation of the actuation mechanism to displace actuating fluid causes actuating fluid to flow only into each actuating fluid chamber having an opened process fluid valve, resulting in pumping.

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30-05-2013 дата публикации

Compressor System for a Compressed Air Supply Arrangement

Номер: US20130133768A1
Принадлежит: WABCO GmbH

A compressor system for a compressed-air supply arrangement includes an adjustable throttle device arranged in the suction line of the compressor. The throttle device is adjustable between a fully open load position and an idle position with a predefined narrowed throttle cross section. The idle power of the compressor is reduced as a result of the reduction of the pressure level downstream of the throttle device without additional lines, filters or the like.

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06-06-2013 дата публикации

Control for Compressor Unloading System

Номер: US20130139535A1
Принадлежит:

A variable-capacity compressor that includes a housing having an inlet for receipt of refrigerant and an outlet for return of refrigerant, and a plurality of compressing elements contained in the housing between the inlet and the outlet. The variable capacity compressor includes a valve having an electrical control. The valve is dedicated to fewer than all of the compressing elements. The valve is movable between a first state which communicates refrigerant flow to the compressing elements, and a second state that reduces or stops flow to the compressing elements. In an embodiment of the invention, an unloading controller has an operational modulation mode that includes cycling the valve between on and off states to provide a portion of compressor capacity. The unloading controller is further programmed to provide a minimum delay time between transitions between the first and second states, but no maximum dwell time between transitions. 1. A variable-capacity compressor comprising:a housing having an inlet for receipt of refrigerant and an outlet for return of refrigerant;a plurality of compressing elements contained in the housing between the inlet and the outlet;at least one valve having an electrical control, the at least one valve being dedicated to a selected compressing element that are fewer than all of the plurality of compressing elements, the at least one valve being movable between a first state, in which the at least one valve is open to communicate refrigerant flow to the compressing elements, and a second state, in which the at least one valve is closed to reduce flow to the compressing elements relative to the first state; andan unloading controller programmed to implement a first on/off mode to switch the at least one valve between first and second states in response to commands from a refrigeration system controller, and further configured to implement a second operational modulation mode cycling the at least one valve a plurality of times between ...

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06-06-2013 дата публикации

Apparatus and method for controlling a compressor, and refrigerator comprising same

Номер: US20130139536A1
Принадлежит: LG ELECTRONICS INC

The present invention relates to an apparatus for controlling a compressor, to a method for controlling a compressor and to a refrigerator comprising same. According to certain embodiments of the present invention, a compressor operates selectively in a TRIAC driving mode or in a mode in which commercial power is directly used in accordance with the quality of the electricity of the commercial power. According to certain embodiments of the present invention, the commercial power is directly applied to the compressor within the range of a predetermined voltage or frequency so as to reduce or remove losses caused by the TRIAC driving, and power consumption is reduced to improve energy efficiency.

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06-06-2013 дата публикации

SOLID STATE BILGE PUMP SWITCH

Номер: US20130140912A1
Автор: Nirenberg David B.
Принадлежит:

A switch for a bilge pump of a boat includes a pair of probes for providing a probe signal indicating the presence of fluid at the probes, a current sensor for providing a sensor signal indicating electric current of the pump; and a controller programmed to energize the pump when a threshold level of the probe signal indicates the presence of fluid and to de-energize the pump when a threshold level of the sensor signal indicates that the pump is not pumping fluid. The controller can also be programmed to dynamically change the threshold level of the probe signal based on a prior probe signal that indicates changing probe conditions. 1. A switch for a bilge pump , the switch comprising , in combination:a pair of probes for providing a probe signal indicating the presence of fluid at the probes;a current sensor for providing a sensor signal indicating electric current of the pump; anda controller programmed to energize the pump when a threshold level of the probe signal indicates the presence of fluid and to de-energize the pump when a threshold level of the sensor signal indicates that the pump is not pumping fluid.2. The switch according to claim 1 , wherein controller is programmed to dynamically change the threshold level of the probe signal based on prior probe signals that indicate changing probe conditions.3. A switch for a bilge pump claim 1 , the switch comprising claim 1 , in combination:a pair of probes for providing a probe signal indicating the presence of fluid at the probes;a controller programmed to energize the pump when a threshold level of the probe signal indicates the presence of fluid; andwherein controller is programmed to dynamically change the threshold level of the probe signal based on a prior probe signal that indicates changing probe conditions.4. The switch according to claim 3 , further comprising a current sensor for providing a sensor signal indicating electric current of the pump and wherein controller is programmed to de-energize the ...

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20-06-2013 дата публикации

Hydraulic pressure producing system for automatic transmission and control method thereof

Номер: US20130156604A1
Принадлежит: Hyundai Motor Co, Kia Motors Corp

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

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20-06-2013 дата публикации

Compressor protection and diagnostic system

Номер: US20130156607A1
Автор: Nagaraj Jayanth
Принадлежит: Emerson Climate Technologies Inc

A compressor diagnostic device is provided and includes at least one of a temperature sensor and a current sensor. The current sensor measures a first current flow through a motor of a refrigerant compressor. The temperature sensor is disposed within and sensing a temperature of a measurement region of an electrical conductor that is configured to close and open to allow and prevent current flow to the motor, respectively. The compressor diagnostic device also includes a controller in communication with the at least one of the current sensor and the temperature sensor. The controller is operable to control the electrical conductor based on a comparison of a second current flow through the motor and a maximum current.

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27-06-2013 дата публикации

Cryopump system, cryogenic system, and apparatus and method of controlling compressor unit

Номер: US20130160468A1
Автор: Toshiyuki Kimura
Принадлежит: Sumitomo Heavy Industries Ltd

A compressor controller includes: a control amount calculation unit configured to calculate at least two control amounts including a first control amount for controlling a first control object that relates to a gas amount for cooling a cryogenic apparatus, and a second control amount for controlling a second control object that relates to the refrigerant gas amount and that is different from the first control object, the second control amount being common with the first control amount; and a selection unit configured to select a control object to be controlled from at least two control objects including the first control object and the second control object on the basis of a comparison between the at least two common control amounts.

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27-06-2013 дата публикации

Method and apparatus for optimizing energy efficiency of pumping system

Номер: US20130164146A1
Принадлежит: ABB Oy

A method and apparatus for optimizing energy efficiency of a pumping system includes at least one pump that controls a fluid level in a reservoir. The method includes a system identification stage and an energy efficiency optimization stage. The system identification stage includes determining pump characteristics for the pump, operating the pump with a range of flow rate conditions, determining a set of data points, and calculating energy efficiency optimization characteristics. The energy efficiency optimization stage includes determining a present static head value, choosing a value for a pump control parameter, and operating the pump on the pump control parameter.

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04-07-2013 дата публикации

ULTRA HIGH PRESSURE PUMP

Номер: US20130167697A1
Автор: Reukers Darren
Принадлежит: TECHNI WATERJET PTY LTD

An ultra high pressure pump comprising a servo motor coupled to a piston having a head arranged within a cylinder to define a pumping chamber, whereby the servo motor rotation causes reciprocal displacement of the piston to pressurise fluid in the pumping chamber to pressures greater than 50,000 psi, the servo motor having a feedback loop coupled to a computer, the feedback loop including a pressure feedback signal to control the pump pressure in real time. 1. An ultra high pressure pump comprising a servo motor coupled to a piston having a head arranged within a cylinder to define a pumping chamber , whereby the servo motor rotation causes reciprocal displacement of the piston to pressurise fluid in the pumping chamber to pressures greater than 50 ,000 psi , the servo motor having a feedback loop coupled to a computer , the feedback loop including a pressure feedback signal to control the pump pressure in real time.2. The ultra high pressure pump according to claim 1 , wherein the servo motor includes an encoder to monitor the position and/or velocity of the motor.3. The ultra high pressure pump according to claim 1 , including means to monitor the current flowing through the motor.4. The ultra high pressure pump according to wherein the outlet of the pumping chamber is coupled to a pressure transducer that provides the pressure feedback signal.5. The ultra high pressure pump according to wherein the output of the servo motor is a reciprocating drive means having opposed ends claim 1 , each end being coupled to a piston cylinder defining a pumping chamber.6. An ultra high pressure pump comprising a servo motor adapted to axially rotate a hollow rotor shaft in alternating directions claim 1 , the servo motor having a stator positioned co-axially around the hollow rotor shaft with the interior of the rotor shaft being co-axially coupled to drive means to convert axial rotation into reciprocal displacement claim 1 , the drive means having opposed ends claim 1 , each ...

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04-07-2013 дата публикации

DAMPING DEVICE AND METHOD

Номер: US20130167941A1
Автор: Bartlett Matthew F.
Принадлежит: SIGNATURE SCIENCE, LLC

The method and device of the present invention reduces the pulsation of fluid from a pump. The damping device and method works on either the positive pressure or negative pressure side of the pump. Under positive pressure the device is attached downstream from the outlet port of a pump, the device having an input port in fluidic communication with the outlet port of the pump, an outlet port, an outer wall with an opening, and a membrane covering the opening, the outer wall of the device and the membrane forming a contained volume. As fluid from the outlet port of the pump passes into the device, it enters the contained volume which expands and contracts, thereby vitiating the pulsations in the fluid flow downstream of the device. Alternatively, under negative pressure the device is attached upstream from the inlet port of a pump.

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04-07-2013 дата публикации

ELECTRIC PUMP SYSTEM

Номер: US20130171008A1
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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11-07-2013 дата публикации

System and method for compressor motor protection

Номер: US20130176649A1
Принадлежит: Emerson Climate Technologies Inc

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

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11-07-2013 дата публикации

Compression device, and a thermodynamic system comprising such a compression device

Номер: US20130177404A1
Принадлежит: Danfoss Commercial Compressors SA

This compression device comprises first and second compressors mounted in parallel, a suction line intended to be connected to an outlet of an evaporator, first and second suction conduits arranged for putting the suction line respectively in communication with the admission orifices of the first and second compressors, and an oil level equalization conduit connecting the oil pans of the first and second compressors. The compression device further comprises an oil separator mounted on the suction line or on the second suction conduit, and an oil return conduit arranged for connecting an oil outflow orifice of the oil separator to the oil pan of the first compressor.

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18-07-2013 дата публикации

Electro-hydraulic drive system for a work machine

Номер: US20130180247A1
Принадлежит: Kawasaki Jukogyo KK

An electro-hydraulic drive system for a work machine which drives an upper rotary body by controlling a flow rate of a hydraulic fluid by a control valve, includes an electro-hydraulic pump including a hydraulic pump driven by an engine, and a first electric motor, and an electro-hydraulic motor including a hydraulic motor rotated by the hydraulic oil supplied from the electro-hydraulic pump, and a second electric motor, and a controller which determines an operating state of the first electric motor and an operating state of the second electric motor based on a load of the electro-hydraulic pump and a load of the electro-hydraulic motor, and is able to perform an efficient operation by using a hydraulic pressure (fluid pressure) and electric power.

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25-07-2013 дата публикации

TORQUE ALLOCATING SYSTEM FOR A VARIABLE DISPLACEMENT HYDRAULIC SYSTEM

Номер: US20130189118A1
Принадлежит:

Disclosed is a system for allocating torque, supplied in one embodiment by an engine, to multiple variable and fixed displacement pumps coupled together in a series by coupling elements interspersed between the pumps. A controller is included which monitors the torque applied to each coupling element. The controller automatically varies displacement in one or more of the variable displacement pumps to prioritize and allocate torque to optimize available torque while keeping the torque applied to each coupling element within the torque limit for that particular coupling element. 1. A system for allocating torque from an engine power output on a primary mover , comprising:a first variable displacement pump operable to drive a first ground effect element;a first coupling between the engine power output of a primary mover and the first variable displacement pump;a second variable displacement pump operable to drive a second ground effect element;a second coupling between the first variable displacement pump and the second variable displacement pump;a variable displacement accessory pump coupled to the second variable displacement pump and operable to power a tool implement;wherein each coupling has a torque load rating;wherein the total torque load applied to the second coupling is the sum of the torque load applied by the accessory pump and second variable displacement pump; and wherein the total torque load applied to the first coupling is the sum of the torque load applied by the accessory pump, the second variable displacement pump and the first variable displacement pump;a controller monitoring the torque loads applied to the first coupling and the second coupling;wherein the controller applies control logic to reduce the displacement of one or more of the variable displacement pumps when the torque load of the first or second coupling elements approaches that coupling element's torque load rating.2. The system of claim 1 , wherein the controller monitors the ...

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25-07-2013 дата публикации

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

Номер: US20130189119A1
Принадлежит: Whirlpool SA

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

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25-07-2013 дата публикации

DEVICE AND SYSTEM FOR MONITORING A PNEUMATICALLY ACTUATED ALTERNATING LINEAR DISPLACEMENT PUMP

Номер: US20130189122A1
Принадлежит: EXEL INDUSTRIES

A device for monitoring a pneumatically-actuated alternating linear displacement pump, and to a system for monitoring a pneumatically-actuated alternating linear displacement pump, which include elements for sensing pneumatic pressure, elements for transmitting a signal representative of the sensed pneumatic pressure, and elements for managing the pneumatically-actuated alternating linear displacement pump in accordance with the transmitted signal representative of the sensed pneumatic pressure. 12. A device for monitoring a pump for a liquid or pasty product such as a paint , said pump being a pneumatically actuated , reciprocating linear displacement pump , the pneumatic actuation being provided by a pneumatic motor , the device comprising sensor means () for sensing the pneumatic pressure of the pneumatic motor , means for transmitting the signal representative of the sensed pneumatic pressure of the pneumatic motor , and means for managing the pump for liquid or pasty product , with pneumatic actuation and with reciprocating linear displacement , based on the transmitted signal representing the sensed pneumatic pressure of the pneumatic motor.2211a. The monitoring device as claimed in claim 1 , wherein the means () for sensing pneumatic pressure comprise a single pressure sensor for measuring the pressure of a chamber () of the pneumatic motor ().31. The monitoring device as claimed in claim 2 , wherein the pneumatic pressure sensor is situated outside the pneumatic motor ().41. The monitoring device as claimed in claim 2 , wherein the pneumatic pressure sensor is situated inside the pneumatic motor ().52. A monitoring system of a pump for a liquid or pasty product such as a paint claim 2 , said pump being a pneumatically actuated claim 2 , reciprocating linear displacement pump claim 2 , the pneumatic actuation being provided by a pneumatic motor claim 2 , the system comprising means () for sensing the pneumatic pressure of the pneumatic motor claim 2 , means ...

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01-08-2013 дата публикации

APPARATUS AND METHOD FOR CONTROLLING COMPRESSOR, AND REFRIGERATOR HAVING THE SAME

Номер: US20130192294A1
Автор: NAH Taewoong, YOO Jaeyoo
Принадлежит:

A compressor control apparatus and method, and a refrigerator including the same, are provided. In a refrigerator having two compressors, starting of two compressors may be staggered to reduce an effect of the suction pressure and discharge pressure between the two compressors, to provide for stable operation of the compressors, and improve reliability and power consumption. 1. A compressor control apparatus for controlling a first compressor and a second compressor connected to each other to compress refrigerant in two stages , the apparatus comprising:a controller configured to generate a first control signal and a second control signal based on a load of the first compressor and the second compressor to operate the first compressor and the second compressor, wherein the controller is configured to first start the second compressor, and to start the first compressor after a predetermined period of time has elapsed after starting the second compressor in a simultaneous operation mode in which the first and second compressors are operated together.2. The apparatus of claim 1 , wherein the controller is configured to detect a top dead center of the second compressor after starting the second compressor claim 1 , and to start the first compressor after detecting the top dead center of the second compressor.3. The apparatus of claim 2 , further comprising:a first load detector and a second load detector configured to detect a load of the first and second compressors, respectively.4. The apparatus of claim 3 , wherein the first load detector comprises:a first current detector configured to detect a first motor drive current applied to a first motor provided in the first compressor;a first voltage detector configured to detect a first motor drive voltage applied to the first motor; anda first stroke calculator configured to calculate a first stroke of the first compressor using the first motor drive current and the first motor drive voltage, and wherein the second load ...

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01-08-2013 дата публикации

Apparatus and method for controlling a compressor

Номер: US20130195613A1
Принадлежит: LG ELECTRONICS INC

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

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01-08-2013 дата публикации

Method for obtaining a full range of lift speeds using a single input

Номер: US20130195681A1
Автор: Timothy I. Meehan
Принадлежит: Eaton Corp

A method for operating a work attachment of a work machine with a single input is disclosed. In one step of the method, an indication is received that operation of a work circuit in a hydraulic system is to be activated. Upon this indication, the hydraulic system may be placed in a work circuit primary mode in which a pump is placed in fluid communication with the work circuit. The method also includes receiving a lifting lever position and correlating the lifting lever position to a required lifting speed. The method further includes automatically controlling at least two of an engine speed, a pump displacement, and a lifting control valve to satisfy the required lifting speed. Additionally, the operation of the engine speed, pump displacement and lifting control valve may be sequentially staged in pre-defined zones of operation.

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08-08-2013 дата публикации

Pressure/Flow Regulator

Номер: US20130199631A1
Принадлежит: ROBERT BOSCH GMBH

A pressure/flow regulator includes a pressure control valve, a flow control valve, and a first control connection configured to set a variable displacement pump. The control connection is configured to be discharged to a tank by the flow control valve via a control edge of the pressure control valve that is open in the idle position of a valve piston of the pressure control valve.

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08-08-2013 дата публикации

DOSING PUMP UNIT AND METHOD FOR CONTROLLING A DOSING PUMP UNIT

Номер: US20130202454A1
Принадлежит:

A metering pump aggregate has a metering chamber (), adjoined by a positive-displacement body () that can be moved by a positive-displacement drive (), as well as a controller () for actuating the positive-displacement drive (). The controller () is designed to actuate the positive-displacement drive () in such a way, at least for specific setpoint conveyed flows to be generated by the metering pump, that a stroke of the positive-displacement body () begins with a first, elevated stroke rate (n), and is subsequently continued at a second, lower stroke rate (n). A method for controlling such a metering pump aggregate is also provided. 1. A metering pump arrangement comprising:a metering chamber;a positive-displacement drive;a positive-displacement body that can be moved by the positive-displacement drive;a controller for actuating the positive-displacement drive, the controller actuating the positive-displacement drive in such a way, at least for specific setpoint conveyed flows to be generated by the metering pump, that a stroke of the positive-displacement body begins with a first, elevated stroke rate, and is subsequently continued at a second, lower stroke rate.2. The metering pump according to claim 1 , wherein the controller actuates the positive-displacement drive in such a way claim 1 , at least for specific conveyed flows to be generated by the metering pump claim 1 , that a pressure stroke of the positive-displacement body begins with a first claim 1 , elevated stroke rate claim 1 , and is subsequently continued at a second claim 1 , lower stroke rate.3. The metering pump according to claim 1 , wherein the controller actuates the positive-displacement drive in such a way for conveyed flows under a preset limit that a stroke of the positive-displacement body begins with a first claim 1 , elevated stroke rate claim 1 , and is subsequently continued at a second claim 1 , lower stroke rate.4. The metering pump according to claim 1 , wherein the positive- ...

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15-08-2013 дата публикации

AUXILIARY FLOW VALVE SYSTEM AND METHOD FOR MANAGING LOAD FLOW REQUIREMENTS FOR AUXILIARY FUNCTIONS ON A TRACTOR HYDRAULIC SYSTEM

Номер: US20130205762A1
Автор: Hart David V.
Принадлежит: VANGUARD EQUIPMENT, INC.

A system and method for managing hydraulic fluid load flow requirements for a tractor having a single pump hydraulic system. The system and method controls an implement hydraulic system and an auxiliary implement hydraulic system using a single hydraulic pump. The auxiliary flow valve system and method of the present disclosure gives precedence to the auxiliary functions so as to maintain full function of the auxiliary device. It also may supply a reduced flow, less than the maximum available from the system hydraulic pump to the auxiliary device. The remaining flow is available to the implement hydraulic system, with full flow being available to the implement when no auxiliary function is used. It also provides the ability to use a closed center valve in a load sensing system by bleeding flow pressure from the auxiliary hydraulic system. 1. A process for managing fluid flow requirements for a tractor auxiliary hydraulic system and an implement hydraulic system connected in parallel to a single pump hydraulic system , comprising:obtaining an implement (pipelayer) fluid pressure requirement from the implement (pipelayer) hydraulic system;obtaining an auxiliary implement fluid pressure requirement;determining a greatest system pressure requirement;transmitting the greatest system pressure requirement to the single pump hydraulic system;obtaining fluid flow from the single pump hydraulic system to maintain the greatest system pressure requirement; andmaintaining fluid flow to satisfy the auxiliary implement fluid pressure requirement independent of the implement (pipelayer) system fluid pressure requirement.2. The process of further restricting the auxiliary fluid flow to the auxiliary hydraulic system to a predetermined valve.3. The process of wherein the single pump hydraulic system includes a maximum pump capacity and wherein said predetermined valve is less than said maximum pump capacity.4. The process of wherein the maximum pump capacity minus the predetermined ...

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15-08-2013 дата публикации

VACUUM PUMP CONTROL DEVICE AND VACUUM PUMP

Номер: US20130209272A1
Принадлежит: EDWARDS LIMITED

An object of the present invention is to improve, using a simple configuration, heat dissipation of a regenerative resistor that is disposed in a vacuum pump control device (controller) connected to a vacuum pump. The regenerative resistor disposed in the vacuum pump control device is stored in an aluminum die-cast casing. More concretely, a housing of the vacuum pump control device is prepared by aluminum die casting (metal mold casting). A regenerative resistor storing portion (aluminum die-cast casing) provided with a hollow portion is provided on a top panel of the aluminum die cast, the hollow portion being designed to have a size accommodating the entire regenerative resistor. The regenerative resistor is fitted into the hollow portion, and an opening section of the hollow portion is sealed with an aluminum sheet of the same material as that of the casing. In this manner, the regenerative resistor can removably be stored in the aluminum die-cast casing. 1. A vacuum pump control device for controlling a vacuum pump main body , the vacuum pump control device comprising:a housing in which a control circuit for controlling the vacuum pump main body is disposed;a regenerative resistor storing portion that is provided in the housing, and has a hollow portion into which is inserted a regenerative resistor consuming regenerative energy, and a regenerative resistor fixture for fixing the regenerative resistor; anda cooling mechanism for cooling the regenerative resistor storing portion.2. The vacuum pump control device according to claim 1 , wherein the regenerative resistor storing portion is produced by a casting process.3. The vacuum pump control device according to or claim 1 , wherein the regenerative resistor storing portion is positioned away from a side surface sandwiched between a surface of the housing on which the control circuit is disposed and a surface of the housing on which the regenerative resistor storing portion is provided.4. The vacuum pump control ...

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22-08-2013 дата публикации

Feed water pump control device

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

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

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22-08-2013 дата публикации

HIGH-EFFICIENCY PUMP SYSTEMS

Номер: US20130216398A1
Автор: Stephens Lonny
Принадлежит:

According to one embodiment of the present invention, a system for pumping fluid is provided. According to this embodiment, a fluid pumping system comprises a fluid inlet pipe and a fluid outlet pipe. A plurality of pump units are disposed between the inlet and outlet pipes such that the pump units each pump fluid out of the inlet pipe and into the outlet pipe. The pump units each include at least one DC motor. A solar panel may be used to power the pump units. 1. A fluid pumping system comprising:a fluid inlet pipe;a fluid outlet pipe;at least one low voltage single speed DC motor having less than ½ horsepower;at least one AC motor, wherein the DC and AC motors are disposed between said inlet and outlet pipes so as to pump fluid out of said inlet pipe and into said outlet pipe; anda electrical controller for controlling the operation of the DC and AC motors.2. The fluid pumping system according to further comprising a photovoltaic solar panel providing electrical power to said DC motor.3. The fluid pumping system according to further comprising a battery storing electrical power generated by said photovoltaic solar panel.4. The fluid pumping system according to further comprising a battery charging unit for recharging said battery claim 3 , wherein the battery charging unit receives electrical power from a source other than said photovoltaic panel.5. The fluid pumping system according to further comprising a power supply unit for providing electrical power to said DC motor claim 1 , said power supply unit receiving electrical power from an AC source.6. The fluid pumping system according to wherein said fluid is water.7. The fluid pumping system according to wherein said inlet pipe draws water from a swimming pool and said outlet pipe transfers water to said swimming pool.8. The fluid pumping system according to further comprising:a pump housing having the DC and AC motors attached thereto;low volume impeller attached to the DC motor;high volume impeller attached to ...

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29-08-2013 дата публикации

VALVE ARRANGEMENT, CONNECTION PLATE FOR A HYDROSTATIC PISTON MACHINE, AND HYDROSTATIC PISTON MACHINE

Номер: US20130224045A1
Автор: Birk Sebastian
Принадлежит: ROBERT BOSCH GMBH

A valve arrangement is configured to rectify a volumetric flow supplied by a hydraulic pump to a first pump connection or second pump connection. The valve arrangement includes a first suction valve arranged between a suction-side connection of the valve arrangement and the first pump connection. The valve arrangement also includes a second suction valve arranged between the suction-side connection and the second pump connection. The valve arrangement also includes a first pressure valve arranged between a pumping-side connection of the valve arrangement and the second pump connection. The valve arrangement also includes a second pressure valve arranged between the pump-side connection and the first pump connection. The first suction valve is acted on by the pressure of the second pump connection in the opening direction. The second suction valve is acted on by the pressure of the first pump connection in the opening direction. 1. A valve arrangement for rectifying a volumetric flow which is fed by a hydraulic pump to a first pump connection or a second pump connection , the valve arrangement comprising:a first suction valve arranged between a suction-side connection of the valve arrangement and the first pump connection;a second suction valve arranged between the suction-side connection and the second pump connection;a first pressure valve arranged between a delivery-side connection of the valve arrangement and the second pump connection; and 'at least one of the first suction valve and the second suction valve is configured to be loaded in an opening direction, the first suction valve configured to be loaded with pressure of the second pump connection, and the second suction valve configured to be loaded with pressure of the first pump connection.', 'a second pressure valve arranged between the delivery-side connection and the first pump connection, wherein2. The valve arrangement as claimed in claim 1 , wherein:the first suction valve has a valve body configured ...

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19-09-2013 дата публикации

CONTROL METHOD FOR A RESONANT LINEAR COMPRESSOR AND AN ELECTRONIC CONTROL SYSTEM FOR A RESONANT LINEAR COMPRESSOR APPLIED TO A COOLING SYSTEM

Номер: US20130243607A1
Принадлежит: WHIRLPOOL S.A.

A control method and system for a resonant linear compressor applied for controlling the capacity of a cooling system. The method includes: a) reading a reference operation power (P) of the motor of the compressor; b) measuring an operation current (i); c) measuring an operation voltage of a control module of the compressor; d) calculating an input power (P) of the motor as a function of the operation current (i) and of the operation voltage; e) comparing the input power (P) with the reference operation power (P); f) if the reference operation power (P) is higher than the input power (P), then increase an operation voltage of the compressor (UC); g) if the reference operation power (P) is lower than the input power (P), then decrease the operation voltage of the compressor (UC). 1100. A control method for a resonant linear compressor () , applied to a cooling system , the method comprising:{'sub': 'ref', 'b': '100', 'a) reading a reference operation power (P) of the compressor ();'}{'sub': 'MED', 'b': '100', 'b) measuring an operation current (i) of the motor of the compressor ();'}{'b': '100', 'c) measuring an operation voltage of a control module of the compressor ();'}{'sub': MED', 'MED, 'b': '100', 'd) calculating an input power (P) of the motor of the compressor () as a function of the operation current (i) measured in step b) and of the operation voltage obtained in step c);'}{'sub': MED', 'ref, 'e) comparing the input power (P) calculated in the preceding step with the reference operation power (P);'}{'sub': ref', 'MED, 'f) if the reference operation power (P) is higher than the input power (P), then increase an operation voltage of the compressor (UC);'}{'sub': ref', 'MED, 'g) if the reference operation power (P) is lower than the input power (P), then decrease the operation voltage of the compressor (UC).'}2. A control method according to claim 1 , further comprising:{'sub': 'pis', 'b': '100', 'h) detecting a piston displacement value (D) of the compressor ...

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19-09-2013 дата публикации

CONTROL DEVICE OF HIGH PRESSURE PUMP

Номер: US20130243608A1
Автор: SAKAMOTO Yuuki
Принадлежит: Denso Corporation

When a flow regulating valve is opened, the passage of current through a solenoid is stopped to move a movable part from a closing-side position to an opening-side position and to thereby open the flow regulating valve. When a sound reducing control performing condition is fulfilled, a valve-opening control for reducing sound is performed. In the valve-opening control, until a fuel pressure in a pump chamber is decreased and the flow regulating valve is opened, the passage of current through the solenoid is continuously performed to hold the movable part at the closing-side position. After the flow regulating valve is opened, the passage of current through the solenoid is stopped. Before the movable part reaches the opening-side position, the passage of current is again temporarily performed. An electromagnetic attracting force is temporarily generated and a moving speed of movable part is decreased by the attracting force. 1. A control device of a high pressure pump including a pump chamber having an intake port and a discharge port of fuel , a plunger reciprocating in the pump chamber , and a flow regulating valve of opening and closing the intake port side , and an electromagnetic actuator for moving the flow regulating valve to thereby open and close the flow regulating valve , the control device comprising:a valve-opening control portion for stopping passing current through a solenoid of the electromagnetic actuator to thereby perform a valve-opening control of moving a movable part of the electromagnetic actuator from a closing-side position to an opening-side position and opening the flow regulating valve,wherein when the valve-opening control portion performs the valve-opening control, the valve-opening control portion continuously passes the current through the solenoid to thereby hold the movable part at the closing-side position until a fuel pressure in the pump chamber is decreased and the flow regulating valve is opened, and after the flow regulating ...

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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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03-10-2013 дата публикации

Working vehicle and method for controlling a working vehicle

Номер: US20130259710A1
Принадлежит: KOMATSU LTD

An upper limit speed control part controls the lower limit of motor displacement in conformance with the target upper limit speed via a motor displacement control part when the target upper limit speed is within the normal speed range. The upper limit speed control part controls the upper limit of pilot pressure via a pilot pressure control part in conformance with the target upper limit speed when the target upper limit speed is within the low speed range. Further, when the target upper limit speed is within the low speed range, the upper limit speed control part controls a pilot pressure valve such that the upper limit of pilot pressure increases as drive circuit pressure increases.

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10-10-2013 дата публикации

Air Compressor With Shut-Off Mechanism

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

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

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10-10-2013 дата публикации

SQUARE SHOULDER METERING ROD

Номер: US20130266457A1
Автор: Davison James L.

A metering rod assembly for a pressure sensitive droop flow pump is provided. The assembly includes a metering rod having a first section with a first diameter and a second section with a section diameter, the second diameter larger than the first diameter. A shoulder is formed at a junction of the first section and second section, the shoulder extending radially perpendicular to the first section. 1. A pressure sensitive droop flow pump comprising:a fluid conduit having a partition with an aperture formed therein; anda metering rod comprising a first section having a first diameter and a second section having a section diameter, the second diameter larger than the first diameter, and a shoulder formed at a junction of the first section and second section, the shoulder extending radially perpendicular to the first section.2. The pressure sensitive droop flow pump of claim 1 , wherein the metering rod extends along an axis claim 1 , and is reciprocally movable along the axis within the fluid conduit.3. The pressure sensitive droop flow pump of claim 2 , wherein the metering rod is movable along the first axis between a first position where the first section is positioned in the aperture and a second position where the second section is positioned in the aperture claim 2 , to control a flow of fluid in the fluid conduit.4. The pressure sensitive droop flow pump of claim 3 , wherein the fluid flows through the pump at a first flow rate with the metering rod in the first position claim 3 , and the fluid flows through the pump at a second flow rate with the metering rod in the second position claim 3 , wherein the second flow rate is less than the first flow rate.5. The pressure sensitive droop flow pump of claim 4 , wherein the pressure sensitive droop flow pump operates at a first angular velocity with the metering rod in the first position and a second angular velocity with the second position claim 4 , the second angular velocity is greater than the first angular ...

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17-10-2013 дата публикации

Intelligent online closed-loop balance adjusting system for pumping unit

Номер: US20130272897A1
Автор: Lianxian Xing, Min Zhao
Принадлежит: Bode Energy Equipment Co Ltd

The invention relates to an intelligent online closed-loop balance adjusting system for a pumping unit. The system comprises a connecting rod, balance weights, a transmission device, a balance weight displacement adjusting motor and a control device used for driving the motor to adjust and control the weight displacement. The transmission device and the balance weight displacement adjusting motor are arranged above a walking beam. The balance weight displacement adjusting motor is connected with one end of the connecting rod through the transmission device, and the other end of the connecting rod is connected with balance weights. One end of the walking beam away from the horse-head is connected with the middle part of the connecting rod. The invention can realize automatic weight adjustment without shutting the machine down, and the balance weights can be adjusted with the precision of ±10%.

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17-10-2013 дата публикации

METHOD AND DEVICE FOR CONTROLLING AN AUXILIARY PUMP FOR A TRANSMISSION

Номер: US20130272900A1
Принадлежит: ZF FRIEDRICHSHAFEN AG

A method of controlling an auxiliary pump for supplying the hydraulic fluid of a hybrid transmission of a vehicle. The auxiliary pump, after the expiration of a predetermined time interval of deactivation, is activated to prevent accumulation of air in the intake area of the auxiliary pump. In addition, a device for the execution of the method, in which a control device is provided which has its signals connected with the electric auxiliary pump for the purpose of controlling the auxiliary pump in order to prevent accumulation of air in the intake area of the auxiliary pump. 111-. (canceled)12. A method of controlling an auxiliary pump which supplies hydraulic oil to a hybrid transmission of a vehicle , the method comprising the step of:activating the auxiliary pump, after expiration of a predetermined time interval of deactivation, for a duration of another predetermined time interval of activation so as o avoid accumulation of air at an intake area of the auxiliary pump.13. The method according to claim 12 , further comprising the step of selecting the duration of the time interval of deactivation and the time interval of activation of the electric auxiliary pump either randomly or empirically.1412232433. The method according to claim 13 , further comprising the step of storing the end of the time interval of deactivation and the time interval of activation in a control device as either an activation time point (t claim 13 , tA claim 13 , tB claim 13 , t) or a deactivation time point (t claim 13 , t claim 13 , tA claim 13 , tB).15. The method according to claim 12 , further comprising the step of activating the auxiliary pump depending on a presence of predetermined events which favor the suction of air.161122. The method according to claim 14 , further comprising the step of starting a timer when a predetermined event is detected at a time point (tA claim 14 , tB) and the auxiliary pump is deactivated at the same time claim 14 , and after the expiration of the ...

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17-10-2013 дата публикации

ELECTRONIC CONTROL METHOD AND SYSTEM FOR A PIEZO-ELECTRIC PUMP

Номер: US20130272902A1
Автор: Chappel Eric, Noth André
Принадлежит: DEBIOTECH S.A.

A method for actuating a pumping device with an optimal driving voltage, wherein the pumping device comprises a pumping chamber () having a pumping membrane (), an inlet () and an outlet chamber (), a voltage controlled actuator () connected to said pumping membrane (), said pumping membrane reaching a stop position defined by a mechanical stop () a sensor for determining whether the pumping membrane has reached said mechanical stop (); said method comprising a learning and working phase, wherein the learning phase comprises the following steps actuation of the pumping membrane () by applying a predetermined actuation voltage Vto the actuator () said pumping membrane () reaching said position in an over-actuation step or not reaching said mechanical stop () position in an under-actuation process; after the over-actuation step, decreasing the voltage so that the pumping membrane () has left said mechanical stop () position and storing as the optimal voltage Vor in the under-actuation step, increasing the voltage so that the pumping membrane () reaches said mechanical stop () position and storing as the optimal voltage Vactuating the pumping device in the working phase with the determined optimal voltage value V. 1. A method for actuating a pumping device with an optimal driving voltage , wherein the pumping device comprises at leasta pumping chamber having a pumping membrane an inlet chamber and an outlet chambera voltage controlled actuator connected to said pumping membrane said pumping membrane reaching at least one stop position defined by a mechanical stop during a pumping strokeat least one sensor for determining whether the pumping membrane has reached said at least one mechanical stop;said method comprising a learning phase and a working phase, wherein the learning phase comprises at least the following steps{'sub': 'act', 'actuation of the pumping membrane by applying a predetermined actuation voltage Vto the actuator, said voltage being either high enough ...

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24-10-2013 дата публикации

Water spraying system

Номер: US20130277451A1
Автор: Richard J. Gilpatrick
Принадлежит: Briggs and Stratton Corp

A water spraying system includes an engine, a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure, a sprayer fluidly coupled to the pump outlet, the sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve, a flow sensor configured to sense a flow of water into the pump, and a controller coupled to the flow sensor. The controller is configured to turn off the engine following a set time period of sensed flow below a threshold flow.

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24-10-2013 дата публикации

Method and system for reciprocating compressor starting

Номер: US20130280095A1
Принадлежит: General Electric Co

Systems and methods of the invention may overcome a higher than normal starting torque for in a reciprocating, electric motor driven air compressor for a vehicle. A detection component can be configured to detect a stall condition for a reciprocating compressor based on a force from compressed air being compressed into a reservoir of the reciprocating compressor. Based upon the detected stall condition, a controller can reverse direction or increase torque to alleviate the stall condition. In the reverse direction mode, the controller component can change a direction of a piston rotation. In the torque increase mode, the controller increases a number of poles for the motor, a line voltage, or a volt/hertz.

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24-10-2013 дата публикации

FAN

Номер: US20130280096A1
Принадлежит:

A fan assembly for creating an air current includes an air inlet, an air outlet, an impeller, a motor for rotating the impeller to create an air flow passing from the air inlet to the air outlet, the air outlet comprising an interior passage for receiving the air flow and a mouth for emitting the air flow, the air outlet defining an opening through which air from outside the fan assembly is drawn by the air flow emitted from the mouth, a control circuit for controlling the motor, a remote control for transmitting control signals to the control circuit, and a plurality of magnets angularly spaced about the air outlet to provide a plurality of angularly spaced docking positions for the remote control on the air outlet. 1. A fan assembly for creating an air current , the fan assembly comprising an air inlet , an air outlet , an impeller , a motor for rotating the impeller to create an air flow passing from the air inlet to the air outlet , the air outlet comprising an interior passage for receiving the air flow and a mouth for emitting the air flow , the air outlet defining an opening through which air from outside the fan assembly is drawn by the air flow emitted from the mouth , a control circuit for controlling the motor , a remote control for transmitting control signals to the control circuit , and a plurality of magnets angularly spaced about the air outlet to provide a plurality of angularly spaced docking positions for the remote control on the air outlet.2. The fan assembly of claim 1 , wherein the magnets are arranged to attach the remote control to an upper portion of the air outlet.3. The fan assembly of claim 1 , wherein the magnets are located in the air outlet.4. The fan assembly of claim 3 , wherein the magnets are located at least partially within the interior passage of the air outlet.5. The fan assembly of claim 1 , wherein the air outlet has a vertical plane of symmetry claim 1 , and wherein the magnets are spaced from the vertical plane of symmetry ...

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24-10-2013 дата публикации

HYDRAULIC SYSTEM

Номер: US20130280097A1
Автор: Narotham Harish
Принадлежит: J.C. BAMFORD EXCAVATORS LIMITED

A method includes providing a hydraulic pump with an outlet, a main orifice having an inlet communicating with the pump outlet, and a main orifice outlet. Further provided are a flow orifice, an amplification orifice, and an amplification orifice outlet, means for generating an output signal representative of a fluid pressure, and a pump controller for controlling the hydraulic pump in response to the output signal. The flow orifice and the amplification orifices each define an area, with these areas defining a ratio, and with the main orifice and the ratio being variable. The method includes operating the system in a first mode so as to define a first mode ratio and operating the system in a second mode so as to define a second mode ratio, so that the ratio is controlled differently in the first mode and the second mode. 1. A method of operating a hydraulic system including providinga hydraulic pump having a pump outlet,a main orifice having a main orifice inlet in fluid communication with the pump outlet and a main orifice outlet for supplying pressurized fluid to a service,a flow orifice having a flow orifice inlet for sensing a pressure representative of a pressure at the pump outlet and a flow orifice outlet,an amplification orifice having an amplification orifice inlet in fluid communication with the flow orifice outlet and an amplification orifice outlet for sensing a pressure representative of a pressure at a service,means for generating an output signal representative of a fluid pressure between the flow orifice outlet and the amplification orifice inlet,and a pump controller for controlling the hydraulic pump in response to the output signal,the flow orifice defining a flow orifice cross section area andthe amplification orifice defining an amplification orifice cross section area,the flow orifice cross section area and the amplification orifice cross section area defining a ratio,in which the main orifice is variable and the ratio is variable,the method ...

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24-10-2013 дата публикации

Method And System For Detection and Localization of A Fluid Related To A Piston Machine

Номер: US20130280106A1
Принадлежит: NATIONAL OILWELL VARCO NORWAY AS

A method for detecting and localizing a valve leak in a piston machine having a shaft includes: attaching one or more vibration sensor to a valve block of the piston machine; measuring the vibrations from at least one of the vibration sensors; attaching a sensor to the piston machine where the sensor is designed to produce, directly or indirectly, an angular shaft position signal for the shaft; determining, directly or indirectly, an angular shaft position signal for the shaft; transforming vibration signals from the one or more vibration sensors into one envelope signal representing an instant vibration level; using the angular position signal for constructing window functions that pick the envelope signal in selected angular shaft sectors; using the window functions to find sector based averages of the vibration level; and comparing said averages with a critical ambient vibration level to detect and localize leaks in one or two valves. 1. A method for detecting and localizing a valve leak in a piston machined having a shaft , comprising:attaching one or more vibration sensors to a valve block of the piston machine;measuring vibrations from at least one of the vibration sensors;attaching a sensor to the piston machine where the sensor is configured to produce, directly or indirectly, an angular shaft position signal for the shaft;determining, directly or indirectly, an angular shaft position signal for the shaft;transforming vibration signals from the one or more vibration sensors into one envelope signal representing an instant vibration level;using the angular position signal for constructing window functions that pick the envelope signal in selected angular shaft sectors;using the window functions to find sector based averages of the vibration level, andcomparing said averages with a critical ambient vibration level to detect and localize leaks in one or two valves.2. The method of claim 1 , further comprising:letting the window functions represent 2p non- ...

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31-10-2013 дата публикации

TRANSMISSION FLUID EXCHANGE MACHINE

Номер: US20130287593A1
Принадлежит:

A machine for replacing used transmission fluid in a vehicle with new transmission fluid includes a frame having a housing. The machine includes a pair of service hoses that extend from the machine and connect to the vehicle's transmission fluid system for placing the machine in the fluid flow. A new fluid tank and a used fluid tank are provided. A pump and a manifold are associated with each of the tanks. The pumps provide for the selective withdraw or insertion of fluid into or out of the tanks. A display on the housing presents an operator of the machine with various tasks or options the machine can perform. A processor controls activation of the pumps and other electrical components based on inputs received by the display. Scales are provided under each tank for determining the amount of fluid going into and out of the tanks during the exchange process. 1. A transmission fluid exchange machine comprising:a frame having a housing;a display coupled with the housing;a new fluid manifold and a used fluid manifold, both manifolds coupled with the housing and in fluid communication with each other;a new fluid pump and a used fluid pump, the new fluid pump coupled with the new fluid manifold and the used fluid pump coupled with the used fluid manifold; anda processor coupled with the display for displaying images thereon and selectively controlling activation of the pumps.2. The machine of claim 1 , wherein the new fluid manifold has a plurality of pathways therethrough claim 1 , wherein the pathways include a plurality of balls therein for controlling the direction of flow of fluid through the pathways claim 1 , and wherein a direction of rotation of the new fluid pump determines positioning of at least one of the balls.3. The machine of claim 1 , further comprising:a used fluid tank for holding used transmission fluid, the used fluid tank supported by the frame, wherein the used fluid pump is in communication with the used fluid tank and is operable to selectively ...

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31-10-2013 дата публикации

FLUID SUPPLY DEVICE

Номер: US20130287594A1
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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31-10-2013 дата публикации

Gas compression system

Номер: US20130287598A1

A gas compression system includes at least one first compressor provided with at least one first cylinder and one second cylinder that are combined together such that a gas to be compressed, which is taken into the first cylinder at an intake pressure, is compressed by the intake of an engine gas to the second cylinder. The system further includes a pressure checking device to check the pressure of the engine gas during the feeding thereof into the second cylinder. The pressure checking device includes a pressure detector for measuring the pressure of the gas to be compressed during the intake thereof to the first cylinder; and a regulator for adjusting the flow rate of the engine gas in the second cylinder such that the pressure of the gas to be compressed is constant during the intake thereof to the first cylinder.

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31-10-2013 дата публикации

Direct Volume-Controlling Device (DVCD) for Reciprocating Positive-Displacement Pumps

Номер: US20130287600A1

A volume control device having a housing with an inlet passage, an outlet passage, and an internal chamber communicating with the inlet and outlet passages. An accumulator is movably positioned within the internal chamber and substantially conforms with walls of the internal chamber, the accumulator including an internal passage allowing fluid flow therethrough. An one-way valve is positioned in the internal passage of the accumulator where the valve is biased in a closed position and an adjustable seat is positioned within the housing internal chamber between the accumulator and the housing outlet passage. A positioning mechanism engages the housing and adjustable seat whereby the position of the adjustable seat within the housing internal chamber may be adjustably fixed. 1. A volume control device comprising:a. a housing having an inlet passage, an outlet passage, and an internal chamber communicating with the inlet and outlet passages;b. an accumulator movably positioned within the internal chamber and substantially conforming with walls of the internal chamber where the accumulator includes an internal passage allowing fluid flow therethrough;c. an one-way valve positioned in the internal passage of the accumulator where the valve is biased in a closed position;d. an adjustable seat positioned within the housing internal chamber between the accumulator and the housing outlet passage;e. a positioning mechanism engaging the housing and adjustable seat whereby the position of the adjustable seat within the housing internal chamber may be adjustably fixed.2. The volume control device of claim 1 , wherein the accumulator seals against a lower portion of the internal chamber and the internal passage of the accumulator is substantially aligned with the inlet passage of the housing.3. The volume control device of claim 1 , wherein the valve within the accumulator is a poppet type with a spring biasing it in the closed position.4. The volume control device of claim 1 , ...

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07-11-2013 дата публикации

METHOD FOR CONTROLLING A REFILLING MOTOR THAT DRIVES A HYDRAULIC PUMP

Номер: US20130294929A1
Автор: Gourves Frederic
Принадлежит: TECHNOBOOST

Method for controlling a refilling motor () that drives a hydraulic pump () that refills at least one pressure accumulator (), this accumulator thereafter delivering the hydraulic pressure (P) to a hydraulic traction machine () of a hybrid vehicle, characterized in that it takes account both of the rate of discharge of the pressure accumulator () and of the time to start (Δi) the refilling motor () so as to manage this start in such a way that this accumulator more or less reaches its minimum operating pressure level (PI) at the end of this start (t).

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07-11-2013 дата публикации

SYSTEM AND METHOD FOR A COMPRESSOR

Номер: US20130294934A1
Принадлежит:

Systems and methods of the invention relate to diagnosing a compressor. A method may include monitoring a pressure of compressed air within a reservoir, actuating a piston within a cylinder of the compressor, and detecting a leak condition of an exhaust valve of the cylinder through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated. A system is also disclosed including an engine, a compressor operatively connected to the engine, and a controller that is operable to determine a condition of the compressor. 1. A method for a compressor , comprising:monitoring a pressure of compressed air within a reservoir;actuating a piston within a cylinder of the compressor; anddetecting a leak condition of an exhaust valve of the cylinder through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated.2. The method of claim 1 , wherein detecting a leak condition of the exhaust valve of the cylinder further comprises correlating the monitored pressure of the compressed air within the reservoir with an indication of a position of the piston in the cylinder.3. The method of claim 1 , further comprising filling the reservoir with compressed air to a determined pressure value claim 1 , wherein the reservoir is configured to store compressed air to be provided to at least one pneumatic device.4. The method of claim 1 , wherein actuating the piston within the cylinder comprises cycling the piston within the cylinder at a first rate during a first portion of the time period and cycling the piston within the cylinder at a second rate during a second portion of the time period.5. The method of claim 1 , wherein detecting a leak condition of the exhaust valve of the cylinder further comprises recognizing a once-per-revolution signature in a frequency analysis of the monitored pressure claim 1 , wherein the ...

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07-11-2013 дата публикации

SYSTEM AND METHOD FOR A COMPRESSOR

Номер: US20130294935A1
Принадлежит:

Systems and methods of the invention relate to diagnosing a compressor. A method may include monitoring a pressure of compressed air within a reservoir of a compressor, actuating an unloader valve of the compressor, and detecting a leak condition of the compressor through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the unloader valve is actuated. A system is also disclosed including an engine, a compressor operatively connected to the engine, and a controller that is operable to determine a condition of the compressor. 1. A method for a compressor , comprising:monitoring a pressure of compressed air within a reservoir of a compressor;actuating an unloader valve of the compressor; anddetecting a leak condition of the compressor through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the unloader valve is actuated.2. The method of claim 1 , further comprising filling the reservoir with compressed air to a determined pressure value.3. The method of claim 1 , wherein detecting a leak condition of the compressor comprises correlating changes in the monitored pressure of the compressed air within the reservoir with an indication of a position of the unloader valve.4. The method of claim 1 , wherein detecting a leak condition of the compressor comprises detecting at least one of: a leak condition of a valve of the compressor disposed between the reservoir and a cylinder of the compressor; or a leak condition of the reservoir of the compressor.5. The method of claim 1 , wherein actuating the unloader valve of the compressor comprises cycling the unloader valve between an open position and a closed position during at least a portion of the time period.6. The method of claim 5 , wherein during said at least the portion of the time period claim 5 , the unloader valve is maintained in the open position for a first duration and ...

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07-11-2013 дата публикации

SYSTEM AND METHOD FOR A COMPRESSOR

Номер: US20130294937A1
Принадлежит:

Systems and methods of the invention relate to diagnosing a compressor. A method may include monitoring a crankcase pressure of a compressor, analyzing the monitored crankcase pressure, and identifying a condition of the compressor based on the analysis of the monitored crankcase pressure. A system is also disclosed including an engine, a compressor operatively connected to the engine, and a controller that is operable to identify a condition of the compressor. 1. A method for a compressor , comprising:monitoring a crankcase pressure of a compressor;analyzing the monitored crankcase pressure; andidentifying a condition of the compressor based on the analysis of the monitored crankcase pressure.2. The method of claim 1 , wherein analyzing the monitored crankcase pressure comprises:calculating an average of the crankcase pressure over a time period; andcomparing the average crankcase pressure over the time period to a nominal crankcase average pressure.3. The method of claim 2 , wherein the condition of the compressor is identified based on a difference between the calculated crankcase average pressure and the nominal crankcase average pressure.4. The method of claim 2 , further comprising identifying the nominal crankcase average pressure from at least one of ambient air temperature or ambient air pressure.5. The method of claim 2 , further comprising identifying the nominal crankcase average pressure from at least one of compressor speed claim 2 , reservoir pressure claim 2 , or oil temperature.6. The method of claim 1 , wherein analyzing the monitored crankcase pressure comprises identifying frequency content of the monitored crankcase pressure at one or more known frequencies.7. The method of claim 6 , further comprising identifying the one or more known frequencies based on a rate at which the compressor is operated.8. The method of claim 1 , wherein analyzing the monitored crankcase pressure comprises correlating the monitored crankcase pressure with an ...

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07-11-2013 дата публикации

SYSTEM AND METHOD FOR A COMPRESSOR

Номер: US20130294938A1
Принадлежит:

Systems and methods of the invention relate to diagnosing a compressor. A method may include operating a compressor to compress air from a first stage compressor into an intermediate stage reservoir, to deliver air from the intermediate stage reservoir to a second stage compressor, and to further compress the air in the second stage compressor into a primary reservoir, monitoring an intermediate stage pressure of the intermediate stage reservoir, and identifying a condition of the compressor through recognition of a change in the monitored intermediate stage pressure during a time period in which the compressor is operated. A vehicle system is also provided including an engine, a compressor operatively connected to the engine, and a controller that is operable to identify a condition of the compressor. 1. A method for a compressor system , comprising:operating the compressor system to compress air from a first stage compressor into an intermediate stage reservoir, to deliver air from the intermediate stage reservoir to a second stage compressor, and to further compress the air in the second stage compressor into a primary reservoir;monitoring an intermediate stage pressure of the intermediate stage reservoir; andidentifying a condition of the compressor system through recognition of a change in the monitored intermediate stage pressure during a time period in which the compressor system is operated.2. The method of claim 1 , further comprising filling the primary reservoir with compressed air to a determined pressure value claim 1 , wherein the primary reservoir is configured to store compressed air to be provided to at least one pneumatic device.3. The method of claim 1 , wherein identifying the condition of the compressor system further comprises correlating the monitored intermediate stage pressure and an indication of a position of a piston in a cylinder of the compressor system.4. The method of claim 3 , further comprising identifying a condition of the ...

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14-11-2013 дата публикации

Pump unit

Номер: US20130300330A1
Принадлежит: Grundfos Holdings AS

A pumping set includes an electric motor, which exhibits a stator, a rotor and a can arranged between the stator and rotor, and at least one impeller linked with the rotor, wherein the electric motor has engine electronics designed for electronically commutating the electric motor, and the electric motor and commutation are configured in such a way that, in a state where the rotor chamber inside the can and/or the impeller is not filled with liquid, the rotor is shut down.

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14-11-2013 дата публикации

WARM-UP CONTROL SYSTEM FOR MACHINE TOOL

Номер: US20130302180A1
Принадлежит: FANUC Corporation

A warm-up control system for a machine tool drives a spindle motor for rotating a main spindle of the machine tool before starting machining, thereby performing a warm-up operation, and acquires a spindle motor load value that is variable by heat generated during the warm-up operation. The warm-up operation is ended when the acquired spindle motor load value becomes substantially equal to a preset working reference load value. The cutting capacity of the main spindle can be improved by this warm-up operation. 1. A warm-up control system for a machine tool , comprising:a warm-up operation executing unit configured to drive a spindle motor for rotating a main spindle of the machine tool before starting machining, thereby performing a warm-up operation;a spindle motor load value acquiring unit configured to acquire a spindle motor load value variable by heat generated during the warm-up operation of the warm-up operation executing unit;a comparison unit configured to compare the spindle motor load value acquired by the spindle motor load value acquiring unit with a preset working reference load value; anda warm-up operation ending unit configured to end the warm-up operation when it is determined as a result of the comparison by the comparison unit that the difference between the spindle motor load value and the preset working reference load value is within a predetermined range.2. The warm-up control system for a machine tool according to claim 1 , wherein the warm-up operation comprises acceleration and deceleration of the main spindle and steady-state rotation of the main spindle achieved by driving the spindle motor.3. The warm-up control system for a machine tool according to claim 1 , wherein the spindle motor load value is a value of current or a load meter value obtained from the spindle motor.4. The warm-up control system for a machine tool according to claim 1 , further comprising a reference load value setting unit capable of setting a plurality of the ...

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21-11-2013 дата публикации

Compact, Light Weight, Battery Operated, Self-Priming, Positive Displacement Pump

Номер: US20130309099A1
Принадлежит: FLOW CONTROL LLC

Compact, lightweight, battery operated, self-priming, positive displacement pump for storing in a toolbox or tool belt includes an elongated housing having a longitudinal axis, and an inline configuration including a positive displacement pump assembly to respond to a motor assembly drive torque, self-prime, and pump fluid from an input port to an output port, a motor assembly to respond to signaling and provide the motor assembly drive torque, a pump control interconnect assembly to provide the signaling to control the operation of the motor assembly by current based on run dry mode or over current, by time based on a timer set to run for an amount of time, or voltage based on over/under voltage; and a rechargeable battery housing/assembly to respond to recharging signaling and with a rechargeable DC power supply and power control module for providing some combination of inrush, overcharging, over-discharging, short circuit, over current protection.

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21-11-2013 дата публикации

Apparatus and Method for Controlling Reciprocating Pump

Номер: US20130309100A1
Автор: YAMAZAKI Tomoyuki
Принадлежит: SHIMADZU CORPORATION

A controlling apparatus for reducing the variation of the liquid supply of a reciprocating pump is presented. The controlling apparatus for a reciprocating pump has a pump housing; a moving component for reciprocating in the pump housing so as to draw a liquid into the pump housing and discharge the liquid from the pump housing; a driving source for reciprocating the moving component; a setting unit for setting a target liquid supply amount or a target amount which corresponds thereto; a unit amount memory unit for storing a discharge amount of the reciprocating pump per a reciprocal movement of the moving component or a unit amount which is a value corresponding to the discharge amount; a computation unit for computing the smallest multiple number of the unit amount which is equal to or larger than the target amount; and a motor controller for controlling the driving source. 1. A controlling apparatus for a reciprocating pump having: a pump housing; a moving component for reciprocating in the pump housing so as to draw a liquid into the pump housing and discharge the liquid from the pump housing; and a driving source for reciprocating the moving component , comprising:a setting unit for setting a target liquid supply amount or a target amount which corresponds thereto;a unit amount memory unit for storing a discharge amount of the reciprocating pump per a reciprocal movement of the moving component or a unit amount which is a value corresponding to the discharge amount;a computation unit for computing a smallest multiple number of the unit amount which is equal to or larger than the target liquid supply amount or the target amount; anda motor controller for controlling the driving source so as to reciprocate the moving component a same number of times as the smallest multiple number.2. The controlling apparatus for a reciprocating pump according to claim 1 , further comprising a home position return unit for returning a predetermined position of the plunger every ...

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21-11-2013 дата публикации

ACTUATOR SYSTEM FOR A CONTROLLED COOLANT PUMP

Номер: US20130309103A1
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A coolant pump of an internal combustion engine, with a pump housing and a hollow shaft rotatably mounted therein. Coolant is delivered via an impeller wheel from a suction connection. The flow is controlled by a guide plate on the impeller wheel that is variably displaceable axially between two end positions. The guide plate is adjustable by a push rod actuator guided in the pump shaft. The actuator has a radial piston pump integrated within the coolant pump with an intake piston and a counterpiston guided in the pump shaft, that are inserted lying opposite one another and delimit a pressure space. The pistons are enclosed outside by a linearly displaceable control element guided in the pump housing. Adjustment of the control element takes place as a function of a rotary angle of the pump shaft via an actuator unit having an electrically operated actuating element and a linear freewheel. 1. A coolant pump of an internal combustion engine , comprising a pump housing in which a pump shaft is mounted rotatably , the pump shaft is configured as a hollow shaft and has an associated impeller wheel connected on one end thereof which delivers a coolant as volumetric flow via a suction connection into a spiral channel , a guide plate on the impeller wheel to adjust a volumetric flow that is axially displaceable between two end positions in an infinitely variable manner and is connected in a rotationally rigid manner to a push rod that is guided in the pump shaft and is connected to an actuator system , the actuator system comprises a radial piston pump which is integrated within the coolant pump and includes a main or intake piston and a counterpiston , which are guided in a through hole of the pump shaft , and are inserted so as to lie opposite one another , to delimit a pressure space , and are enclosed on an outside by a radially or linearly displaceable control element which is guided in a cutout in the pump housing , an adjustment of which takes place via an actuator ...

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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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28-11-2013 дата публикации

DIAGNOSTIC SYSTEMS AND INSTRUMENTS

Номер: US20130315780A1
Принадлежит: WELLSTAT DIAGNOSTICS, LLC

Provided is a clinical diagnostic system that comprises a diagnostic instrument and a disposable cartridge. The diagnostic system can be used to measure assays in point of care clinical settings. 1. A diagnostic system having a closed fluidic pathway comprising:a diagnostic instrument comprising at least two probes; a fluidic pathway; a non-electrochemiluminescence (ECL) detection system; an ECL detection system; and a pump;a cartridge comprising at least one needle, at least one reservoir; at least one fluidic seal; and at least one fluidic channel; anda blood collection tube,the closed fluidic pathway, wherein the pathway begins and ends in the cartridge and has a substantially single direction of flow in a pathway fluidically connecting the diagnostic instrument and the cartridge.2. The diagnostic system of claim 1 , wherein the at least one probe comprises a first probe and a waste probe claim 1 , and wherein the closed fluidic pathway includes a first probe engagement with the cartridge and a waste probe engagement with the cartridge.3. The diagnostic system of claim 1 , wherein the at least one reservoir comprises a first reservoir and a waste reservoir.4. The diagnostic system of claim 3 , wherein the first reservoir and the waste reservoir are the same reservoir.5. The diagnostic system of claim 3 , wherein the first reservoir and the waste reservoir are not the same reservoir.6. The diagnostic system of claim 3 , wherein after the first reservoir is emptied claim 3 , the first reservoir is used as the waste reservoir.7. The diagnostic system of claim 3 , wherein after the first reservoir is emptied it becomes the waste reservoir.8. The diagnostic system of claim 2 , wherein the first probe fluidically connects to a first reservoir of the disposable cartridge.9. The diagnostic system of claim 8 , wherein the first reservoir contains diagnostic reagents.10. The diagnostic system of claim 2 , wherein the waste probe fluidically connects to a waste reservoir of ...

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