Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 24971. Отображено 100.
05-01-2012 дата публикации

Compressor casing with optimized cavities

Номер: US20120003085A1
Принадлежит: SNECMA SAS

The invention relates to a compressor for a turbine engine including a casing ( 4 ), at least one compressor stage consisting of a stationary blade ( 2 ) impeller and a mobile blade ( 1 ) impeller positioned upstream from said stationary blade ( 2 ) impeller, and cavities ( 5 ) made in said casing opposite the through-path of the mobile blades ( 1 ), said cavities having a length L 2 measured axially and being shifted upstream relative to the blades ( 1 ) so as to generate an overlap with a length L 1 , characterised in that the lengths L 1 and L 2 are respectively between 35% and 50% and between 80% and 90% of the axial chord C ax measured at the outer end of the blades ( 1 ), and in that the cavities ( 5 ) do not in communication with one another.

Подробнее
20-02-2015 дата публикации

Система для компрессора турбонагнетателя (варианты)

Номер: RU0000150653U1

1. Система для компрессора турбонагнетателя, содержащая:приводимый в движение кольцеобразный диск, содержащий дроссельные отверстия в нем;наружный кольцеобразный диск, содержащий дроссельные отверстия в нем; ипривод для поворачивания приводимого в движение кольцеобразного диска относительно наружного кольцеобразного диска, чтобы менять совмещение дроссельных отверстий приводимого в движение кольцеобразного диска и наружного кольцеобразного диска.2. Система по п. 1, в которой каждое из дроссельных отверстий расположено смежно впуску дроссельного канала, открытого к впуску компрессора, когда дроссельные отверстия совмещены, при этом выпуск дроссельного канала находится в сообщении по текучей среде с крыльчаткой в положении ниже по потоку от передней кромки разделяющих лопастей и передней кромки полных лопастей крыльчатки.3. Система по п. 2, дополнительно содержащая стравливающий канал, выпуск которого постоянно открыт к впуску компрессора, и впуск которого находится в сообщении по текучей среде с крыльчаткой выше по потоку от передней кромки разделяющих лопастей и ниже по потоку от передней кромки полных лопастей.4. Система по п. 3, в которой стравливающий канал расположен аксиально внутри дроссельного канала.5. Система по п. 1, в которой привод является вакуумным приводом.6. Система по п. 1, дополнительно содержащая контроллер двигателя с командами, хранимыми в нем, для управления приводом на основании условий работы компрессора турбонагнетателя.7. Система по п. 1, в которой наружный кольцеобразный диск содержит вставную часть на своей внутренней окружности, причем периферия вставной части совмещена с вне� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 150 653 U1 (51) МПК F02B 37/12 (2006.01) F02D 23/00 (2006.01) F04B 39/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014125533/06, 24.06.2014 (24) Дата начала отсчета срока действия патента: 24.06.2014 Приоритет(ы): (30) Конвенционный ...

Подробнее
14-02-2020 дата публикации

Система транспортирования текучей среды

Номер: RU0000196070U1

Полезная модель относится к области двигателестроения, в частности к системам транспортирования текучей среды, а именно к системе наддува комбинированных тепловых двигателей, оснащаемой устройством обнаружения помпажа в компрессоре, позволяющим осуществить смещение запаса по помпажу. Система транспортирования текучей среды содержит компрессор (1), сконфигурированный для увеличения давления потока текучей среды, проходящего через него, и антипомпажный контур (2) рециркуляции потока, сконфигурированный для выборочного перенаправления части потока текучей среды, проходящего через компрессор при проявлениях события помпажа, проявляющегося возникновением процесса колебательного изменения давления нагнетания компрессора текучей среды. Компрессор (1) состоит из корпуса (3) и колеса (4), закрепленного на валу (5) ротора турбокомпрессора при помощи гайки (6). Для обеспечения надежности системы антипомпажный контур (2) находится внутри корпуса (3) компрессора и содержит радиальный канал (7) и кольцевой канал (8) с расположенными внутри удерживающими ребрами жесткости (9). При этом вход антипомпажного контура (2) рециркуляции потока расположен в направлении текучей среды и начинается с места на некотором расстоянии от входа в компрессор, где глубина межлопаточного канала и высота лопаток (10) достаточно велика. Кроме того, входная часть корпуса (3) компрессора со стороны антипомпажного контура (2) сопряжена с направляющим элементом (11) для распределения основного потока рециркуляции текучей среды и герметично связана посредством фланцевого соединения с применением V-образного хомута (12), центрирующей втулки (13) и уплотнительного кольца (14), обеспечивая надежность системы. При этом образуется кольцевое сопло (15) и ресиверная полость (16) для перепускаемой части потока текучей среды, проходящего через компрессор. Была решена задача, которая позволила обеспечить надежность системы. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 196 070 U1 (51) МПК F04D 27/02 (2006.01) ...

Подробнее
19-01-2012 дата публикации

Compressor Surge Control System and Method

Номер: US20120014812A1
Принадлежит: TMEIC Corp

A system and method for controlling gas surges in compressors powered by electric motors. An adjustable speed drive (ASD) incorporating a microprocessor powered by a three-phase source of electricity controls the electric motor which drives the compressor. A bypass valve is inserted between the gas input of the compressor and the gas discharge. The bypass valve opens in response to signals from the ASD which detects gas surges by analyzing a stored surge map which plots a surge line and a related discretionary control line based on the power and speed of the motor. When the operating point of the motor crosses the control line, the ASD causes the bypass valve to open.

Подробнее
16-02-2012 дата публикации

Electrostatic control of air flow to the inlet opening of an axial fan

Номер: US20120036998A1
Принадлежит: International Business Machines Corp

An air moving apparatus comprises an axial fan and an electrostatic device. The axial fan has a rotatable shaft defining a central axis of the axial fan, a plurality of blades secured to the shaft, and an air inlet opening. The electrostatic device is disposed immediately upstream of the air inlet opening of the axial fan, and includes a collector and an emitter. In one embodiment, the electrostatic device comprises a cylindrical collector coupled to ground and has a central axis aligned with the central axis of the axial fan, wherein the cylindrical collector has an inner diameter that is substantially the same as the diameter of an air inlet opening to the axial fan. The electrostatic device further comprises a plurality of emitter wires coupled to a terminal of a direct current source and extending lengthwise within the cylindrical collector. The axial fan moves air longitudinally through an air inlet opening of the axial fan, and, during operation of the axial fan, the application of an electrical potential between an emitter and a collector causes ionic air movement radially outwardly away from a central axis of the axial fan.

Подробнее
23-02-2012 дата публикации

Fan system and electronic device

Номер: US20120044644A1
Принадлежит: Nidec Corp

A fan system includes a pulse signal generation portion and a plurality of fans. Each of the plurality of fans preferably includes a motor portion; an impeller arranged to be rotated by the motor portion; a drive circuit arranged to drive the motor portion; a rotation detection portion arranged to detect rotation of the motor portion; and a rotation rate control circuit arranged to, based on a reference pulse signal supplied from the pulse signal generation portion and an actual rotation pulse signal supplied from the rotation detection portion, exercise feedback control on a rotation rate of the motor portion in accordance with a period of the reference pulse signal.

Подробнее
05-04-2012 дата публикации

Variable geometry turbine

Номер: US20120082539A1
Автор: Khimani Mohiki
Принадлежит: Cummins Turbo Technologies Ltd

A variable geometry turbine for a turbocharger has a plurality of vanes disposed in an inlet passageway of a turbine housing outboard of the turbine wheel. The vanes are movable so as to adjust the effective cross-section area of the inlet between a first position in which the area of the inlet is a minimum and a second position in which the area of the inlet is a maximum. The movement of one end of the vanes is supported by a plurality of first guide tracks, such as slots, defined in a guide member. A vane actuator such as, for example a unison ring, effects movement of the vanes. The vane actuator has a plurality of actuation tracks (e.g. slots) for engagement with the vanes and is rotatably disposed in the housing. When it rotates the vane actuator induces sliding translation of the vanes relative to the first guide tracks in a first direction and sliding translation of the vanes relative to the actuation tracks in a second direction so as to adjust the cross-section area of the inlet. The swirl angle changes between the first and second positions.

Подробнее
19-04-2012 дата публикации

Auto-stop air pump

Номер: US20120093662A1
Автор: Chun-Chung Tsai

An auto-stop air pump has a housing, a blower and an auto-stop device. The housing has an upper chamber, a lower chamber, a main inlet and an outlet. The upper chamber and the lower chamber communicate with each other. The main inlet and the outlet are formed through the housing respectively and communicate with the upper chamber. The blower is mounted in the housing and has a motor connected to a dual-sided impeller. The auto-stop device is mounted in the housing and has a shell, a film, a micro switch and an actuating unit. The film and the micro switch are mounted in the shell. The actuating unit is mounted movably through the shell. Owing to deformation of the film by pressure, the film presses the micro switch to close the micro switch so the air pump can stop working automatically.

Подробнее
26-04-2012 дата публикации

Fan system for electronic device

Номер: US20120097375A1
Принадлежит: Hon Hai Precision Industry Co Ltd

A fan system for dissipating heat generated in an electronic device includes a processor unit, a speedometer unit connected to the processor unit, a governor unit connected to the processor unit, and a fan group including at least two fans. Each fan is connected to the speedometer unit and the governor unit and has at least two motors. The processor unit controls all the motors to rotate and thereby drives all the fans to rotate through the governor unit, and detects rotation speeds of all the motors through the speedometer unit. When a motor malfunctions, the processor unit adjusts the rotation speeds of all other motors to ensure that the fan having the malfunctioning motor and other fans are respectively provided with equal power and then rotate in equal speeds.

Подробнее
26-04-2012 дата публикации

Control system

Номер: US20120100011A1
Принадлежит: Johnson Controls Technology Co

A control system is provided that can identify the occurrence of a single surge cycle in centrifugal compressor using various methods and devices. Once the occurrence of a single surge cycle is identified, the control system can take remedial action to respond to the surge cycle, such as by adjusting the position of a variable geometry diffuser, and restore the centrifugal compressor to stable operation.

Подробнее
03-05-2012 дата публикации

Fan control device for a heating or cooling system

Номер: US20120104108A1
Принадлежит: Individual

A fan controller device runs the cooling and heating system fan in between cycles, thus maintaining all rooms of a building at a more even temperature. The fan controller device includes a plurality of sensors, a timing controller device operatively connected to the plurality of sensors, and a fan relay device operatively connected to the timing controller device. The fan controller device is adapted to be connected to a thermostat on a heating and air conditioning system.

Подробнее
24-05-2012 дата публикации

Variable performance vaneaxial fan with high efficiency

Номер: US20120128494A1
Принадлежит: Cornerstone Research Group Inc

The design of a high efficiency, variable performance vaneaxial fan, requires the utilization of typical fan and single stage compressor design methodologies. To be able to replace multiple fans, the variable vaneaxial fan design must be capable of operation at several different flow rates and total pressures. These operation points can be met by varying motor revolutions per minute (RPM) or geometric parameters such as the hub diameter, tip diameter, as well as blade geometry including number of blades, pitch, spacing, and length. An ideal design with variable performance can replace a family of current fan designs by providing the capability for efficient operation over a range of flow rates and total pressures. This level of variability would not only allow the fan to respond to changing environmental conditions but also to be fit into systems with different characteristics.

Подробнее
07-06-2012 дата публикации

Surge precursor protection systems and methods

Номер: US20120137759A1
Автор: John Bolton, Michael Krok
Принадлежит: General Electric Co

The present application provides a method of monitoring a compressor. The method may include the steps of determining a blade passing frequency, determining a power indication for a number of frequencies above and below the blade passing frequency, determining a ratio between a maximum power indication and a minimum power indication for the frequencies for a number of predetermined time intervals, and analyzing the ratio for each predetermined time interval to predict a surge condition of the compressor.

Подробнее
07-06-2012 дата публикации

Vacuum pump

Номер: US20120143390A1
Принадлежит: Edwards Japan Ltd

To provide a vacuum pump capable of performing temperature control using one or more heating devices or cooling devices fewer than the number of temperature sensors arranged in the pump. One temperature sensor is arranged for each target in the pump, while only one set consisting of a heater 147 and a magnetic valve 163 is arranged. One set consisting of a heater and a magnetic valve is controlled based on output signals from a plurality of temperature sensors, based on the priorities set for the temperature sensors. As stated above, by setting priorities for the temperature sensors, the temperature of a target provided with a temperature sensor given a higher priority is settled within a control range by performing quick ON/OFF control, and then the temperature of a target provided with a temperature sensor given a lower priority is settled within the control range.

Подробнее
28-06-2012 дата публикации

Dc motor speed controller of a range hood

Номер: US20120161674A1
Автор: Hsiao-Ping Hung
Принадлежит: Individual

A DC motor speed controller of a range hood has a motor driving circuit, a DC brushless motor and a monitoring module. The motor driving circuit has a PWM controller and a phase control circuit electrically connected with the pulse width modulation controller. The DC brushless motor is electrically connected to the motor driving circuit. The monitoring module has a microprocessor that generates and transmits a speed control signal to the motor driving circuit so that the motor driving circuit generates a PWM signal to the phase control circuit, the phase control circuit performs a phase modulation and outputs a speed control voltage to the DC brushless motor, and the DC brushless motor varies a speed thereof according to the speed control voltage. Accordingly, the DC motor speed controller of the present invention can drive the DC motor of a range hold with at least four different speeds.

Подробнее
05-07-2012 дата публикации

Gas turbine engine and system for modulating secondary air flow

Номер: US20120167589A1

One embodiment of the present invention is a unique gas turbine system having a system for modulating secondary air flow. Another embodiment is a compressor vane stage with a plenum employed in providing secondary air flow. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for secondary air flow systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.

Подробнее
16-08-2012 дата публикации

Method and apparatus for controlling a processing system

Номер: US20120204965A1
Принадлежит: Applied Materials Inc

Methods and apparatus for controlling a processing system are provided herein. In some embodiments, a method of controlling a processing system may include operating a vacuum pump coupled to a process chamber at a first baseline pump idle speed selected to maintain the process chamber at a pressure equal to a first baseline pump idle pressure; monitoring the pressure in the process chamber while operating the vacuum pump at the first baseline pump idle speed; and determining whether the first baseline pump idle pressure can be maintained in the process chamber when the vacuum pump is operating at the first baseline pump idle speed.

Подробнее
30-08-2012 дата публикации

Method of detecting and controlling stall in an axial fan

Номер: US20120219398A1
Принадлежит: Flakt Woods Ltd

A method of detecting stall in an axial fan through acoustical measurements in air the air flow, includes measuring the sound emanating from the flow adjacent the fan, preparing a visual representation of the sound, comparing the visual representation with a library of fixed visual representations derived from a plurality of tests representative of the performance of the fan under a range of operating parameters, selecting the fixed visual representation most closely matching the visual representation of the said sound, and deriving a control signal from the selected fixed visual representation. The visual representations are formed by a symmetrised dot pattern (SDP) technique.

Подробнее
30-08-2012 дата публикации

Centrifugal Compressor Part Load Control Algorithm for Improved Performance

Номер: US20120219431A1
Принадлежит: Carrier Corp

A compressor system having a centrifugal compressor, controller and an interface is disclosed. The compressor includes adjustable guide vanes and a variable geometry diffuser. The controller is in electrical communication with each of the guide vanes and diffuser so as to monitor and adjust positions thereof in accordance with a predetermined control algorithm. The control algorithm is implemented in accordance with a method of controlling the centrifugal compressor. The method adjusts the position of the diffuser based on the actual lift, guide vane position and predetermined relationships between diffuser position and reference lift.

Подробнее
18-10-2012 дата публикации

Variable pitch fan having a pitch sensor

Номер: US20120263593A1
Принадлежит: Flexxaire Inc

A compact variable pitch fan has a drive fluid pitch change mechanism. A pitch change piston is constrained to follow reciprocating motion under drive fluid control within a peripheral hub from which fan blades extend outward. A pitch change sensor is mounted with the rotary union.

Подробнее
18-10-2012 дата публикации

Method of controlling heat-dissipating fan of computer device

Номер: US20120265363A1
Принадлежит: Compal Electronics Inc

The present invention relates to a method of controlling a heat-dissipating fan of a computer device, which is provided with a heat-dissipating fan, a controller, a first sensor unit, and a second sensor unit. The method of the present invention includes the following steps. First, the controller accepts a first signal and a second signal and controls the rotating speed of the heat-dissipating fan according to the first signal. Subsequently, the controller determines the first signal and the second signal. Next, the controller reduces the rotating speed of the heat-dissipating fan corresponding to the first signal to temporarily maintain the rotating speed at a constant to thereby reduce a noise value produced by the heat-dissipating fan.

Подробнее
25-10-2012 дата публикации

Double-ended blower and volutes therefor

Номер: US20120266887A1
Принадлежит: ResMed Pty Ltd

A variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.

Подробнее
25-10-2012 дата публикации

System and method for evaluating the performance of a pump

Номер: US20120270325A1
Принадлежит: Flowserve Management Co

Systems and methods to determine the apparent density of a fluid being displaced by a pump. The apparent density may be determined by comparing an expected torque of the pump to an actual torque of the pump. The apparent density can also be used to detect irregular operating conditions.

Подробнее
20-12-2012 дата публикации

Tip treatment for a rotor casing

Номер: US20120321443A1
Принадлежит: Rolls Royce PLC

A tip treatment bar and associated rotor casing structure, wherein the tip treatment bar includes a solid composite structure having a plurality of layers arranged therein so as to provide the bar with a directional stiffness characteristic. Such a layered composite arrangement can be used to tailor the vibration characteristics of the bar. The tip treatment bar and casing structure may be suited for mounting relative to a fan or compressor in a gas turbine engine.

Подробнее
17-01-2013 дата публикации

Compressors with integrated secondary air flow systems

Номер: US20130017066A1
Автор: Jong Lee, Nick Nolcheff
Принадлежит: Honeywell International Inc

A compressor includes a rotor platform; a rotor blade; and a casing having an inner surface surrounding the tip and spaced radially outwardly from the tip to define a gap. A secondary air flow system includes a bleed inlet configured to remove secondary air flow from the primary air flow; an injection opening disposed in the inner surface of the casing upstream of the bleed inlet; an accessory conduit; and a plenum fluidly coupled to the bleed inlet, the injection opening, and the accessory conduit. The bleed inlet and plenum at least partially define a secondary air flow path such that a first portion of the secondary air flow is directed in through the bleed inlet, through the plenum, and out through the injection opening and a second portion of the secondary air flow is directed in through the bleed inlet, through the plenum, and out through the accessory conduit.

Подробнее
24-01-2013 дата публикации

Control system and method for fan

Номер: US20130024027A1
Принадлежит: Hon Hai Precision Industry Co Ltd

A safety control method for a fan includes: capturing an image of an object next to the fan and gathering distances between a plurality of points on the object and a depth-sensing camera, obtaining the distance between the object in the scene and the fan, comparing the distance between the object and the fan against a first preset value, and cutting off power to the fan when the distance between the object and the fan is less than the first preset value.

Подробнее
14-02-2013 дата публикации

Vortex generators

Номер: US20130037657A1
Автор: Robert E. Breidenthal
Принадлежит: Ramgen Power Systems LLC

A vortex generator, or an array of vortex generators, for attenuating flow separation during flow of fluid over a surface. Vortex generators include a base with a forward end and a leading edge extending outward and rearward from the forward end to an outward end. The leading edge includes a first angular discontinuity at a height H 1 above the base, and a second angular discontinuity at a height H 2 above the base. The vortex generator(s) are configured for generating, adjacent a surface, at least two (2) vortices V 1 and V 2 in a fluid, and turning the outermost generated vortice toward the surface over which the fluid is passing.

Подробнее
14-02-2013 дата публикации

Variable vane actuation system and method

Номер: US20130039735A1
Автор: Andy Eifert
Принадлежит: Rolls Royce Corp

A variable vane actuation system and method is disclosed herein. The variable vane actuation system includes a first ring member disposed for pivoting movement about a centerline axis. The first ring member is operably connected with at least one vane such that the at least one vane pivots in response to the pivoting movement of the first ring member. The variable vane actuation system also includes a first pin engaged with the first ring member. The variable vane actuation system also includes a ring moving device operably engaged with the first pin to move the first ring member about the centerline axis. The ring moving device includes at least one plate having a first slot and an actuator operable to move the at least one plate. The first pin is received in the first slot and is a cam follower to a cam defined at least in part by a surface of the first slot.

Подробнее
14-02-2013 дата публикации

Stator for supersonic compressor

Номер: US20130039748A1
Автор: Shawn P. Lawlor
Принадлежит: Ramgen Power Systems LLC

A stator. The stator may be used in a supersonic compressor that utilizes a rotor to deliver a gas at supersonic conditions to the stator. The stator includes a plurality of aerodynamic ducts that have converging and diverging portions, for deceleration of gas to subsonic conditions and then for expansion of subsonic gas, to change kinetic energy of the gas to static pressure. The aerodynamic ducts include structures for changing the effective contraction ratio to enable starting even when the aerodynamic ducts are designed for high pressure ratios, and structures for boundary layer control.

Подробнее
21-02-2013 дата публикации

Fan control unit and method

Номер: US20130045114A1
Автор: Yao-Ting Chang
Принадлежит: Hon Hai Precision Industry Co Ltd

A fan control unit measures the rotating speeds of the first and second fans to calculate the relative work intensities of the two fans. The control unit determines whether a difference between the first work intensity and the second work intensity is within a predetermined range. If the difference between the first work intensity and second work intensity is not in the predetermined range, the control unit adjusts a duty cycle of a pulse signal output to one of the first and second fans to change the rotating speed of one of the first and second fans to bring the difference between the first work intensity and the second work intensity within the predetermined range.

Подробнее
28-02-2013 дата публикации

Adjustable speed fan

Номер: US20130049667A1
Автор: LEI Liu, Xiao-Feng Ma

A fan includes blades, a motor, a bracket fixing the motor, a fan connector, a resistor unit, and a switch unit. The fan connector, the resistor unit, and the switch unit are configured to control power to the motor to adjustably control rotation of the blades. The motor controls the blades to rotate at different speeds through switching the switch unit to adjust the current output to the power terminal of the motor.

Подробнее
14-03-2013 дата публикации

METHOD FOR MANAGING A HYBRID COMPRESSOR OF AN AIR-CONDITIONING CIRCUIT

Номер: US20130064685A1
Принадлежит: VALEO SYSTEMES DE CONTROLE MOTEUR

The invention relates to a method for managing a hybrid compressor () for an air-conditioning circuit of a motor vehicle having a heat engine, said hybrid compressor being suitable for being driven, on the one hand, by said heat engine and, on the other hand, by an electric motor () during phases in which the drive of the compressor () by means of the heat engine is interrupted. According to the invention, during a phase in which the drive is interrupted, said method comprises starting said electric motor () before said drive interruption begins. The invention can be used for air-conditioning motor vehicles having a heat engine and provided with an automatic stopping and restarting system. 1. A method for managing a hybrid compressor for an air-conditioning circuit of an engine motor vehicle , the hybrid compressor being able to be driven by said engine and by an electric motor during phases of interruption of driving of the compressor by the engine , the method comprising:during a driving interruption phase, starting said electric motor before commencement of said driving interruption.2. The method as claimed in claim 1 , wherein the hybrid compressor comprises:a first refrigerant fluid compression chamber comprising a first compression rod able to be driven by said engine, anda second refrigerant fluid compression chamber comprising a second compression rod able to be driven by said electric motor, detecting by anticipation a phase of interruption of driving of the first compression rod by the engine,', 'switching the refrigerant fluid from the first to the second compression chamber, and', 'starting the electric motor before commencement of the interruption of driving of the first compression rod by the engine., 'wherein the method further comprises3. The method as claimed in claim 1 , wherein the hybrid compressor comprises: detecting by anticipation a phase of interruption of driving of the compression rod by the engine,', 'switching the capacity of the ...

Подробнее
14-03-2013 дата публикации

Integrated Direct Drive Starter/Generator for Turbines

Номер: US20130064688A1
Принадлежит:

A starter/generator machine for a turbine with a turbine enclosure, an air duct, and a plurality of fan blades is provided. The starter/generator machine includes a plurality of stator elements spaced at intervals in a ring shape adjacent to the air duct and a plurality of rotor elements mounted on the fan blades. The stator elements and the rotor elements are mounted to interact magnetically to exert a force sufficient to move the rotor elements. The stator elements are shaped to minimize air flow interference and are formed with a core, at least one pole, and multiple windings. The spacing between the stator elements and the rotor elements forms an air gap on the order of 5-10 mm, and the number of stator elements is different from the number of rotor elements. 1. A method of producing power using a starter/generator machine for a turbine with a turbine enclosure , an air duct , and a plurality of fan blades within said air duct , comprising:a. providing a plurality of stator elements spaced at intervals in a ring shape adjacent to an air duct in a turbine, shaped to minimize air flow interference, and mounted to interact magnetically with each of a plurality of a number of rotor elements different from a number of said plurality of stator elements to exert a force sufficient to move said rotor elements;b. mounting each of said plurality of rotor elements inward of a tip of said fan blades in a location selected to interact magnetically with each of said stator elements;c. forming each of said plurality of stator elements to have at least one pole, a U-shaped or C-shaped core with salient poles facing said fan blades, and multiple windings;d. forming each of said plurality of rotor elements from a ferro-magnetic material to form flux guides thick enough to carry all of the flux generated by the magnetic interaction of the stator elements and the rotor elements and spacing each of said rotor elements a distance from each of said stator elements to form an air gap ...

Подробнее
04-04-2013 дата публикации

Fan brake

Номер: US20130084185A1
Принадлежит: International Business Machines Corp

A fan brake for a fan system. The fan system may include a fan assembly configured for seating into a cassette housing. The fan assembly may include a fan having a plurality of blades connected with a fan hub. The fan brake may be connected to the fan assembly, wherein the fan brake engages the fan hub when the fan housing is not fully seated within the cassette housing, and the fan brake disengages the fan hub when the fan assembly is fully seated into the cassette housing.

Подробнее
11-04-2013 дата публикации

Current switch with automatic calibration

Номер: US20130088213A1
Автор: David PIERSON
Принадлежит: Veris Industries LLC

A current switch that can be reset when it is not powered automatically calibrates itself when the circuit monitored by the current switch is energized.

Подробнее
11-04-2013 дата публикации

CONTROL SHAFT SEAL

Номер: US20130089411A1
Автор: Ward Daniel N.
Принадлежит: BORGWARNER INC.

The propensity for gas leakage around a shaft, which connects volumes of differing pressures, in, e.g., a turbocharger is minimized in a simple cost-effective manner. The addition of a complementary pair of frusto-spherical, conical, or other profiles to the interface of the shaft and its bearing maintain concentricity of the shaft in its bore and thus improve the efficacy of existing sealing protocols. 1. A turbocharger with:a turbocharger housing,{'b': 35', '22', '29', '35, 'an actuating mechanism () for actuating a device () within the turbocharger, and a pivot shaft () having an inside end inside the turbine housing and an outside end outside the turbine housing, and rotatably mounted in a bore in the turbocharger housing for transmitting an actuating movement from outside the turbocharger housing to the actuating mechanism (),'}{'b': '39', 'wherein the shaft or bore is provided with a seal (), and'}wherein the shaft and bore are provided with complementary, concentric, self-centering mating contact surfaces for (a) centering and preventing tilt of the seal and (b) further sealing against leakage.247494648. The turbocharger according to claim 1 , wherein a segment of the shaft passing through the bore narrows in diameter ( claim 1 , ) and a segment of the bore narrows in diameter ( claim 1 , ) complementary to the narrowing diameter of the shaft.3. The turbocharger according to claim 2 , wherein the shape of the narrowing convexity and concavity are frusto-conical claim 2 , frusto-spherical claim 2 , part conical claim 2 , part spherical claim 2 , mixtures of flat and conical or flat and spherical (“stepped”) claim 2 , combinations of differently angled conical surfaces claim 2 , or combinations of different curvature surfaces.4. The turbocharger according to claim 3 , wherein the shaft and bore exhibit 360° concentricity at the mating contact surfaces.5. The turbocharger according to claim 1 , wherein the sealing portion comprises a circumferential groove ...

Подробнее
18-04-2013 дата публикации

SYSTEMS AND METHODS FOR PROGRAMMING OF A COOLING FAN ARRANGEMENT

Номер: US20130094973A1
Принадлежит: MARVELL WORLD TRADE LTD.

Embodiments of the present disclosure provide a method that comprises, based upon receipt of a mode command, changing an operating mode of a fan motor controller of a fan to a serial port communication protocol, programming a memory of the fan motor controller with an operating parameter of the fan, and based upon receipt of a serial port command, changing the operating mode of the fan motor controller from the serial port communication protocol to another protocol. 1. A method of programming a cooling fan arrangement , wherein the cooling fan arrangement includes (i) a fan , (ii) a fan motor , and (iii) a fan motor controller , the method comprising: (i) transmit, via the pin and from the fan motor controller to a first system that is external to the cooling fan arrangement, information associated with a fault of the cooling fan arrangement, or', '(ii) receive, via the pin and from a second system that is external to the cooling fan arrangement, information for programming the cooling fan arrangement,, 'monitoring, by the fan motor controller, a pin of the cooling fan arrangement, wherein the fan motor controller is configured to selectively'} detecting a pre-determined pattern in the pin, and', 'recognizing the pre-determined pattern as a mode command received from the second system, and, 'wherein monitoring, by the fan motor controller, the pin of the cooling fan arrangement comprises'}and wherein in response to recognizing the pre-determined pattern as the mode command received from the second system, the method further includes changing an operating mode of the fan motor controller to a programming mode to permit the fan motor controller to receive, via the pin, the information for programming the cooling fan arrangement from the second system.2. The method of claim 1 , wherein detecting the pre-determined pattern in the pin further comprises:determining that an output state of the pin is different from what is expected from an internal driving of the fan motor ...

Подробнее
18-04-2013 дата публикации

Fan array fan section in air-handling systems

Номер: US20130095746A1
Автор: Lawrence G. Hopkins
Принадлежит: Huntair Inc

A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration.

Подробнее
25-04-2013 дата публикации

DEVICE AND METHOD FOR CONTROLLING COMPRESSOR, AND REFRIGERATOR INCLUDING SAME

Номер: US20130098089A1
Принадлежит:

Disclosed are a compressor control device, a method for controlling a compressor, and a refrigerator including the same. The present invention enables: a compressor to be driven by using a mode selectively to be driven by an inverter and a mode which directly uses a supply voltage, according to the quality of electricity of the supply voltage; loss which is caused by the use of the inverter to be reduced or removed by directly providing the supply voltage to the compressor within a certain voltage or frequency range; and increased energy efficiency by reducing power consumption. 1. A compressor control device , comprising:a compressor having a motor;a commercial power source supplying power to the compressor;a power conversion unit converting the power of the commercial power source into driving power of the motor and outputting the converted driving power; anda compressor control unit operating the compressor by connecting the commercial power source directly to the compressor or operating the compressor through the power conversion unit, based on an input voltage or input frequency of the commercial power source.2. The compressor control device of claim 1 , wherein claim 1 , when the input voltage of the commercial power source is within a predetermined voltage range or when the input frequency of the commercial power source is within a predetermined frequency range claim 1 , the compressor control unit connects the commercial power source directly to the compressor.3. The compressor control device of claim 2 , wherein claim 2 , when the input voltage of the commercial power source is out of the predetermined voltage range or when the input frequency of the commercial power source is out of the predetermined frequency range claim 2 , the compressor control unit operates the compressor through the power conversion unit by generating a control signal.4. The compressor control device of claim 3 , wherein the power conversion unit comprises:a converter converting an ...

Подробнее
25-04-2013 дата публикации

METHOD FOR CONTROLLING A COMPRESSOR ELEMENT OF A SCREW COMPRESSOR

Номер: US20130101390A1
Принадлежит:

Method for controlling a compressor element of a screw compressor, where the compressor element has a housing with two meshing helical rotors supported in the housing in the axial direction using at least one axial bearing. The method has a process A and/or a process B, where process A has a first step of switching on a first magnet during start-up of the compressor element, such that the magnet exerts a force on the rotor that is directed from an outlet side to an inlet side, and of switching off this first magnet during nominal operation of the compressor element; and where process B has a first step of keeping a second magnet switched off during start-up of the compressor element, and switching on this second magnet during nominal operation of the compressor element, such that this second magnet exerts a force that is directed from the inlet side to the outlet side. 126-. (canceled)27. Method for controlling a compressor element of a screw compressor , said compressor element having a housing , two meshing helical rotors positioned in the housing , each helical rotor having a shaft with a helical rotor body , wherein the shaft of each helical rotor is supported in the housing along the axial direction by at least one axial bearing , and wherein the housing is provided with an inlet for a gas to be compressed at one end of the helical rotors and an outlet for the compressed gas at the other end of the helical rotors , said method comprising the steps of:providing the compressor element with a device configured to exert an extra force on the at least one axial bearing via the rotor, wherein the device configured to exert the extra force comprises at least one of a first magnet and a second magnet, said at least one magnet having a magnetic field exerting a force acting in the axial direction on at least one of the helical rotors of the compressor element or on an outer race of a second bearing that is affixed around the helical rotor,wherein said force of said ...

Подробнее
16-05-2013 дата публикации

Fluid Movement System and Method for Determining Impeller Blade Angles for Use Therewith

Номер: US20130121804A1
Автор: Kerry N. Oliphant
Принадлежит: Concepts ETI Inc

A fluid movement system that includes an impeller having a blade with a leading edge blade tip angle determined as a function of an increase in mass flow rate due to reinjection of flow from a flow stability device located proximate to the leading edge tip of the blade. In an exemplary method, the leading edge blade tip angle can be determined based on selecting a blade incidence level based on a mass flow gain versus flow coefficient curve. Blade leading edge tip angles determined in accordance with a method of the present invention are typically greater than blade leading edge tip angles determined using traditional methods. The greater blade leading edge tip angles can lead to more robust blades designs.

Подробнее
16-05-2013 дата публикации

AXIAL COMPRESSOR FOR FLUID-FLOW MACHINES

Номер: US20130121807A1
Принадлежит: ALSTOM Technology Ltd

An axial compressor of a fluid-flow machine includes a flow path disposed between a rotor shaft and a relatively stationary housing wall. The flow path extends in an axial direction of the rotor shaft concentrically with the rotor shaft and the housing wall. A plurality of compressor stages are axially arranged in sequence along the flow path in the axial direction. Each of the compressor stages includes a rotor blades row and a guide vane row disposed after the rotor blades row in the axial direction. The flow path and the compressor stages operating therein are penetrable by a mass flow of a fluid to be compressed in a flow direction during operation of the compressor. A return is configured to return a part of the mass flow from a compressor discharge. 1. An axial compressor of a fluid-flow machine , comprising:a flow path disposed between a rotor shaft and a relatively stationary housing wall, the flow path extending in an axial direction of the rotor shaft concentrically with the rotor shaft and the housing wall;a plurality of compressor stages axially arranged in sequence along the flow path in the axial direction, each of the compressor stages including at least one rotor blades row and a guide vane row disposed after the at least one rotor blades row in the axial direction, each of the rotor blades rows including rotor blades disposed next to one another on the rotor shaft in a circumferential direction, each of the guide vane rows including guide vanes disposed on the housing wall next to one another in the circumferential direction, the flow path and the compressor stages operating therein being penetrable by a mass flow of a fluid to be compressed in a flow direction during operation of the compressor; anda return configured to return a part of the mass flow from a compressor discharge.2. The axial compressor according to claim 1 , wherein the return is configured to return fluid from an outlet region disposed behind a last one of the compressor stages in ...

Подробнее
16-05-2013 дата публикации

REFRIGERANT COMPRESSOR

Номер: US20130121809A1
Принадлежит: Panasonic Corporation

A refrigerant compressor comprises an electric element; a compression element; and a sealed container; wherein the compression element includes: a crankpin; a piston pin; and a connecting rod having a large hole portion into which the crankpin is inserted, a small hole portion in which the piston pin is rotatably disposed, and a coupling rod portion; wherein an oil guide hole is provided in the coupling rod portion of the connecting rod such that the large hole portion and the small hole portion are communicated with each other via the oil guide hole; a circular first groove is provided on an outer peripheral surface of the piston pin such that the first groove communicates with the oil guide hole; and a second groove extending in a center axis direction of the piston pin is provided in a first region of the small hole portion of the connecting rod. 1. A refrigerant compressor comprising:an electric element including a stator and a rotor;a compression element actuated by the electric element; anda sealed container which accommodates the electric element and the compression element and reserves lubricating oil;wherein the compression element includes:a crankpin provided at a crankshaft rotated by the rotor;a piston pin provided at a piston which is reciprocatable in an inner space of a cylinder block; anda connecting rod having a large hole portion into which the crankpin is inserted, a small hole portion in which the piston pin is rotatably disposed, and a coupling rod portion for coupling the large hole portion and the small hole portion to each other;wherein an oil guide hole is provided in the coupling rod portion of the connecting rod such that the large hole portion and the small hole portion are communicated with each other via the oil guide hole;a circular first groove is provided on an outer peripheral surface of the piston pin such that the first groove communicates with the oil guide hole; anda second groove extending in a center axis direction of the ...

Подробнее
23-05-2013 дата публикации

METHOD FOR OPERATING A COMPRESSOR

Номер: US20130129477A1
Автор: Winkes Georg
Принадлежит:

A method for operating a compressor including providing suction pressure measurement, final pressure measurement, throughput measurement is provided. Using a first control characteristic map a target value for a pump surge limiter is determined from one or two of the measurements, and the pump surge limiter compares the target value to the throughput measurement, wherein the pump surge limiter opens a bypass valve when the measured value falls below or exceeds the target value, such that the final pressure is lowered or the flow through the compressor is increased. In the event of failure of a measurement, a further measurement of another physical variable of the compression process, together with a measured variable that did not fail or a modification of the measured variable, is an input variable for a substitute control characteristic map, form which a substitute target value is determined. 110-. (canceled)11. A method for operating a compressor , comprising:providing measured values including a suction pressure measurement, a final pressure measurement, and a throughput measurement; determining a target value for a surge limiter from a measured value by means of a first control characteristic map;', 'comparing the target value with the throughput measurement directly or indirectly by the surge limiter; and', 'opening a closed bypass valve by the surge limiter when the throughput measurement falls below or exceeds the target value whereby the final pressure is lowered or a flow through the compressor is increased,', 'wherein in the event of failure of a measured value, the determining step includes determining a substitute target value by a substitute control characteristic map using a further measurement of another physical variable of the compression process and one of the measured values that did not fail or a modification of the measured value that did not fail., 'in normal operation during which the measured values proceed faultlessly,'}121. The method as ...

Подробнее
23-05-2013 дата публикации

Multistage compressor installation

Номер: US20130129531A1
Принадлежит: Praxair Technology Inc

A multistage compressor installation in which compression stages utilizing centrifugal compressors are independently driven by drivers that can be electric motors configured to be controlled by a speed controller. Intercoolers are located between stages to remove the heat of compression and the stages are connected such that outlets are located opposite to inlets of the compressors and conduits connecting the intercoolers to the stages are in an in-line relationship to inhibit the formation of pressure drops between stages. The conduits connecting the stages incorporate tapered transition sections configured such that flow velocity gradually decreases towards the intercooler and gradually increases from the intercooler to the next succeeding compression stage to further inhibit pressure drops.

Подробнее
30-05-2013 дата публикации

TURBOCHARGER HOUSING HAVING A VALVE DEVICE, AND METHOD FOR MANUFACTURING A TURBOCHARGER HOUSING OF SAID TYPE

Номер: US20130136578A1
Принадлежит: Continental Automotive GmbH

A turbocharger housing has a valve device. The valve device is formed with at least one first duct section and a second duct section. The two duct sections are arranged with their longitudinal axes parallel to one another and they are formed without any undercuts. 112-. (canceled)13. A turbocharger housing , comprising:a valve device, said valve device having at least two passage sections including a first passage section and a second passage section;said two passage sections having longitudinal axes extending parallel to one another and said passages being formed without an undercut.14. The turbocharger housing according to claim 13 , wherein said two passage sections claim 13 , by said longitudinal axes thereof claim 13 , are arranged in an offset relationship relative to one another or are arranged one above the other in a vertical plane.15. The turbocharger housing according to claim 13 , wherein at least one of said passage sections tapers towards an end thereof and at least one of said passage sections has a constant cross section.16. The turbocharger housing according to claim 13 , wherein at least one of said passage sections tapers towards an end thereof or at least one of said passage sections has a constant cross section.17. The turbocharger housing according to claim 13 , wherein said valve device is formed with a valve seat and said valve seat forms a segment of one of said passage sections.18. The turbocharger housing according to claim 17 , wherein said valve seat forms a segment of said first passage section and said first passage section is an outer passage section.19. The turbocharger housing according to claim 17 , wherein said valve seat claim 17 , in a region thereof that forms said segment of said one passage section claim 17 , is adapted to a contour of the said one passage section.20. The turbocharger housing according to claim 19 , wherein said segment of said valve seat is formed in a flattened shape corresponding to said passage section.21 ...

Подробнее
06-06-2013 дата публикации

Method and equipment for detecting rotating stall and compressor

Номер: US20130142617A1
Принадлежит: Nuovo Pignone SpA

A method for detecting rotating stall in a compressor is disclosed herein. The method comprises measuring radial vibration of the rotor relative to the stator and generating a vibration measurement signal, calculating a frequency spectrum of the vibration measurement signal, identifying a plurality of frequency bandwidths of the frequency spectrum, neglecting one first frequency bandwidth of the plurality of frequency bandwidths if the rotation frequency of the rotor falls within the first frequency bandwidth, neglecting at least one second frequency bandwidth of the plurality of frequency bandwidths if the rotation frequency of the rotor falls below the second frequency bandwidth, determining the maximum magnitude of the spectrum in each of the non-neglected frequency bandwidths, and comparing each determined maximum magnitude and a predetermined value. Rotating stall is considered occurring if at least one of the comparisons shows that the corresponding determined maximum magnitude is greater than the predetermined value.

Подробнее
06-06-2013 дата публикации

Method of positioning a control surface to reduce hysteresis

Номер: US20130142620A1
Принадлежит: Rolls Royce PLC

A method of determining the actual position of a control surface ( 27 ). The method comprises receiving a signal ( 34 ) representative of a required position of the control surface ( 27 ), repositioning the control surface ( 27 ) in response to the signal ( 34 ) by moving an actuator ( 26 ), measuring a secondary position indicator, calculating the actual position of the control surface ( 27 ) on the basis of the secondary position indicator and, comparing the actual position with the required position.

Подробнее
20-06-2013 дата публикации

Test arrangement for a centrifugal compressor stage

Номер: US20130152357A1
Принадлежит: Nuovo Pignone SpA

A system for testing a compressor is provided. The system comprises one or more compressors connected together in series to a test compressor wherein an output of the test compressor is connected to an input of a first compressor in the series, forming an overall loop, one or more process fluid coolers in the overall loop, one or more orifices in the overall loop, a control valve in the overall loop, and a first plurality of sensors configured adjacent to a process fluid input of the test compressor and a second plurality of sensors configured adjacent to a process fluid output of the test compressor.

Подробнее
27-06-2013 дата публикации

Alarm system and method for fans

Номер: US20130162435A1
Автор: Lei Shi

An alarm system for a fan includes a first obtaining unit, a second obtaining unit, a storage unit, a control unit, and an alarm unit. The first obtaining unit is configured to obtain a temperature of a chip at a regular time interval. When the temperature of the chip is greater than a first predetermined value, the control unit obtains a standard speed of the fan corresponding to the temperature through the second obtaining unit, and obtains a standard speed of the fan corresponding to the temperature from the storage unit. When the number of times the speed of the fan is not in synchronization with the temperature of the CPU reaches a third predetermined value, the alarm unit sends alarm information.

Подробнее
04-07-2013 дата публикации

METHOD AND APPARATUS FOR COMPOSITION BASED COMPRESSOR CONTROL AND PERFORMANCE MONITORING

Номер: US20130170952A1
Автор: BRENNE Lars, HØYDAL Jan
Принадлежит: STATOIL ASA

A method and apparatus controls a compressor, where the compressor inlet gas may contain water and/or non-aqueous liquid. The method includes the steps of measuring temperature at the compressor inlet and/or outlet side, measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio, measuring fluid mixture density at the compressor inlet and/or outlet side, measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side, measuring fluid velocity at the compressor inlet and/or outlet side, and determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side. 1. A method for surge protection of a compressor with an inlet and outlet side , wherein an inlet gas flow or stream of the compressor comprises time-varying amounts of water and/or non-aqueous liquid , by continuously or discontinuously measuring and/or determining various parameters of the fluids passing through said compressor , the method comprising the steps of:a) measuring temperature at the compressor inlet and/or outlet side,b) measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio,c) measuring fluid mixture density at the compressor inlet and/or outlet side,d) measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side,e) measuring fluid velocity at the compressor inlet and/or outlet side,f) determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non-aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side,g) based on the determined individual flow rates of gas, water and non-aqueous liquid, determining and actual fluid ...

Подробнее
04-07-2013 дата публикации

Fan system and method for controlling a fan motor

Номер: US20130171009A1
Принадлежит: ROBERT BOSCH GMBH

In a fan system for an internal combustion engine of a motor vehicle, having an electrical fan motor with a commutator, and having a control unit which detects a fault in the fan motor and switches said motor to a voltage-free state if the motor current reaches a predetermined load-dependent switch-off value, the invention proposes that the control unit controls the fan motor with at least a virtually maximum power for a predetermined period of time if the motor current reaches a load-dependent switching value which is lower than the associated switch-off value by a predetermined amount. As a result, the fan motor is not switched off in an undesirable manner if only contamination, but not blocking, is present.

Подробнее
04-07-2013 дата публикации

Method for controlling a compressor

Номер: US20130173063A1
Автор: Georg Winkes
Принадлежит: SIEMENS AG

A compressor includes a control unit and a model unit. The control unit determines at least two actuation values of at least two actuating elements of the compressor via a transmitted setpoint value of a parameter of the compressor from a characteristic diagram of the compressor or at least two corrected actuation values of the at least two actuating elements via a model-based theoretical setpoint value from the characteristic diagram of the compressor. The model unit determines a model-based theoretical state of the compressor via the actuation values or the corrected actuation values by using a state model of the compressor. The model-based theoretical state of the compressor is described at least with the model-based theoretical setpoint value of the parameter of the compressor. The control unit controls at least one of the actuating elements as a function of the corrected actuation value of this actuating element.

Подробнее
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.

Подробнее
11-07-2013 дата публикации

Electrostatic control of air flow to the inlet opening of an axial fan

Номер: US20130177391A1
Принадлежит: International Business Machines Corp

A method of modifying the airflow to the inlet of an axial fan comprises operating an axial fan to move air longitudinally through an air inlet opening of the axial fan, and, during operation of the axial fan, applying an electrical potential between an emitter and a collector to cause ionic air movement radially outwardly away from a central axis of the axial fan, wherein the radially outward air movement is caused upstream of the axial fan before the air reaches the air inlet opening.

Подробнее
25-07-2013 дата публикации

Leak detection appliance

Номер: US20130186183A1
Автор: Ulrich DÖBLER
Принадлежит: Inficon GmbH Deutschland

The leak detection appliance has a test inlet to which a test chamber containing the test specimen can be connected. A high-vacuum pump produces a high vacuum in a test gas detector. A preliminary vacuum pump contains two pump stages. In order to evacuate the test chamber, the pump stages are operated in parallel mode, with their suction capabilities being added. When the necessary vacuum has been achieved, the pump stages are operated in series in order to produce the necessary high vacuum—which is required for high detection sensitivity—on the test gas detector.

Подробнее
25-07-2013 дата публикации

Method and device for detecting a rotational separation adversely affecting a turbine engine compressor

Номер: US20130186191A1
Автор: Cedrik Djelassi
Принадлежит: SNECMA SAS

A method and device detecting a rotating stall affecting a turbine engine compressor. The detection method includes: detecting an abnormal acceleration of the engine or an operating line of the compressor that is characteristic of a failure of the engine; storing a reference temperature measured at an outlet from a turbine of the engine at an instant of detection; comparing a determined temperature threshold with the difference between a current temperature at the outlet of the turbine as measured after detection and the reference temperature; and identifying that a rotating stall is present in event of the threshold being exceeded.

Подробнее
25-07-2013 дата публикации

APPARATUS AND METHOD FOR CONTROLLING COMPRESSOR

Номер: US20130189075A1
Принадлежит:

There is disclosed herein a compressor control apparatus, and a compressor control method. According to the present disclosure, the compressor may be operated in an operation mode in which commercial power applied to the compressor does not pass through an alternating current capacitor when the load is in an overload state, thereby preventing the loss of a drive and effectively reducing the copper and core loss of the compressor. Furthermore, according to the present disclosure, the entire power consumption may be reduced due to the loss reduction of a drive, thereby improving the energy efficiency, and reducing the harmonic components for generating the same stroke even when an alternating current (AC) capacitor is provided therein. 1. A compressor control apparatus , comprising:an alternating current (AC) capacitor configured to be connected in series to a compressor, the compressor being configured to receive commercial power;a microcomputer configured to generate a control signal for selectively operating in a first mode in which power applied to the compressor passes through the alternating current capacitor, and a second mode in which power applied to the compressor passes through a branched circuit, based on a load state of the compressor; anda switch configured to control the commercial power applied to the alternating current capacitor in response to the control signal generated by the microcomputer.2. The compressor control apparatus of claim 1 , wherein the switch device comprises two or more alternating current switches claim 1 , wherein at least one of the two or more alternating current switches is connected in series to the alternating current capacitor.3. The compressor control apparatus of claim 2 , wherein the microcomputer generates a first control signal for operation in the first mode claim 2 , and operates the at least one alternating current switch connected in series to the alternating current capacitor when the load state is an overload ...

Подробнее
01-08-2013 дата публикации

APPARATUS AND METHOD FOR CONTROLLING A COMPRRESSOR

Номер: US20130195612A1
Принадлежит:

An apparatus and method for controlling a compressor are provided. A motor current flowing in a compressor may be calculated from voltage values of a capacitor without using a sensor, and as a motor current value is calculated by changing voltage values of the capacitor according to voltage values of a drive and performing a definite integral thereon, the motor current value may be resistant to noise, and the compressor may be more stably controlled. 1. An apparatus for controlling a compressor , the apparatus comprising:a capacitor voltage detector that detects voltage values of a capacitor connected to the compressor;a drive voltage detector that detects voltage values of a drive that drives the compressor according to a control signal; anda microcomputer that calculates a motor current flowing in the compressor by changing the voltage values of the capacitor according to the detected voltage values of the drive and performs a definite integral on the voltage values of the capacitor.2. The apparatus of claim 1 , wherein the drive is an inverter and the control signal is a pulse width modulation signal.3. The apparatus of claim 1 , wherein the microcomputer comprises a motor current calculator that changes a corresponding voltage of the capacitor into 0 and performs the definite integral on the voltage values of the capacitor to output the motor current claim 1 , when the detected voltage values of the drive are not 0.4. The apparatus of claim 1 , further comprising:a commercial power source that supplies power to the compressor; anda rectifyier that rectifies the power from the commercial power source.5. The apparatus of claim 1 , further comprising:a motor voltage detector that detects a motor voltage applied to the compressor,wherein the microcomputer calculates a stroke of the compressor using the detected motor voltage and the calculated motor current.6. The apparatus of claim 1 , wherein the compressor comprises a reciprocating compressor.7. An apparatus for ...

Подробнее
01-08-2013 дата публикации

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

Номер: US20130195678A1
Принадлежит:

A compressor control apparatus, and a refrigerator including the same are provided. The operation of two compressors may be controlled using an alternating current (AC) switch, thereby minimizing a number of components, as well as increasing compressor capacity and enhancing operation efficiency. A plurality of operation modes may be used to correspond to a load or freezing capacity using two compressors, and the two compressors may be operated in a separate or simultaneous manner using a drive including two (AC) switches, thereby simplifying the configuration of the system. 1. A compressor control apparatus , comprising:a first alternating current (AC) switch and a second AC switch switched in response to a first control signal and a second control signal to drive a first compressor and a second compressor; anda controller configured to generate the first and second control signals based on a load of the first and second compressors and to output the first and second control signals to the first and second alternating current switches, and wherein the controller is configured to selectively operate the first and second compressors in a simultaneous mode in which the first and second compressors operate together, in a first separate mode in which only the first compressor operates, and in a second separate mode in which only the second compressor operates.2. The compressor control apparatus of claim 1 , wherein the controller varies a firing angle of the first alternating current switch or the second alternating current switch based on a freezing capacity of the first compressor or second compressor.3. The compressor control apparatus of claim 2 , further comprising:an input voltage detector configured to detect a voltage of commercial alternating current (AC) power to be supplied to the first and second compressors.4. The compressor control apparatus of claim 3 , further comprising:a direct current (DC) power supply configured to convert the commercial alternating ...

Подробнее
15-08-2013 дата публикации

Efficiency optimized air flow apparatus and method of operation

Номер: US20130209274A1
Принадлежит: Individual

A method for controlling the motor of an air handling system to provide a desired output of flowing air therefrom while minimizing the power used by the motor, including operationally connecting a switched reluctance electric motor to a blower, operationally connecting an electronic controller to the switched reluctance electric motor, operationally connecting at least one sensor to the electronic controller, measuring at least one environmental parameter with the at least one sensor, inputting the desired air flow into the electronic controller, calculating the minimum motor speed necessary to provide the desired air flow, and sending a control signal from the electronic controller to the motor to control the motor to the minimum motor speed necessary to provide the desired air flow.

Подробнее
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.

Подробнее
29-08-2013 дата публикации

DEVICE AND METHOD FOR RELIABLY OPERATING A COMPRESSOR AT THE PUMP THRESHOLD

Номер: US20130223981A1

A method is used for determining an operating point of a compressor that includes at least one impeller, compressor blades attached to the impeller, a housing and at least two sensors. The method includes calculating a deflection of the compressor blades. An operating point and spacing of the blades is determined with respect to a surge limit based on the calculating of the deflection by measuring passage times of the compressor blades at a sensor. A signal that is representative of a rotation speed is determined and is associated with the compressor impeller. In a learning or adaptation mode, compressor blade-specific, state-induced and position-induced deviations from an ideal state are determined using compressor blade-specific passage times that are measured and compared with ideal passage times. In a working mode, compressor blade-specific passage times are measured and the compressor blade-specific passage times are corrected using the determined state-induced and position-induced deviations. 19-. (canceled)10. A method for determining an operating point of a compressor including at least one impeller , compressor blades attached to the at least one impeller , a housing and at least two sensors , the method comprising:calculating a deflection of the compressor blades taking place;determining an operating point and spacing of the compressor blades with respect to a surge limit, based on the calculating of the deflection, by measuring passage times of the compressor blades at a sensor;determining a signal that is representative of a rotation speed and is associated with the compressor impeller;determining, in a learning or adaptation mode, compressor blade-specific, state-induced and position-induced deviations from an ideal state using compressor blade-specific passage times that are measured and compared with ideal passage times; andmeasuring, in a working mode, compressor blade-specific passage times; andcorrecting, in the working mode, the compressor blade- ...

Подробнее
29-08-2013 дата публикации

VARIABLE GEOMETRY TURBINE

Номер: US20130223996A1
Автор: Parker John F.
Принадлежит:

A variable geometry turbine has a gas flow control mechanism located upstream of the turbine wheel and operable by an actuator assembly to control gas flow through said inlet passage. The control mechanism comprises a movable member for varying the size of the inlet passage. The movable member is coupled to a pair of rods that translate in an axial direction. The rods are supported for translation in guide bushes. A seal assembly seals against each rod and comprises a seal carrier coupled to an end of the guide bush. The seal carrier carries a lip seal that is in sealing contact with an external surface of the rod. 1. A variable geometry turbine comprising a turbine wheel mounted within a housing for rotation about a turbine axis , a gas flow inlet passage upstream of said turbine wheel , and a gas flow control mechanism located upstream of the turbine wheel and operable by an actuator assembly to control gas flow through said inlet passage , the control mechanism comprising a movable member for varying the size of the inlet passage , the movable member being coupled to at least one support member , a guide member providing support for movement of the at least one support member in translation , a seal assembly for sealing against the at least one support member , the seal assembly comprising a seal carrier coupled to the guide member , the seal carrier carrying a seal that is in sealing contact with the at least one support member.2. A variable geometry turbine according to claim 1 , wherein the seal carrier is releasably coupled to the guide member.3. A variable geometry turbine according to claim 1 , wherein the seal carrier has a first portion that is coupled to the guide member.4. A variable geometry turbine according to claim 3 , wherein the first portion of the seal carrier is coupled to a first end of the guide member.5. A variable geometry turbine according to claim 3 , wherein the seal carrier has a second portion for supporting the seal.6. A variable ...

Подробнее
05-09-2013 дата публикации

Fan Control Device and Fan Control Method and Cooling System Thereof

Номер: US20130230397A1
Автор: Cho Shih-Huai
Принадлежит: WISTRON CORPORATION

The present invention discloses a fan control device for controlling a fan. The fan control device includes a barometer, for measuring an atmospheric pressure of an operating environment of the fan, and a maximum rotating speed setting unit, for setting a maximum operable rotating speed of the fan according to the atmospheric pressure. 1. A fan control device for controlling a fan , comprising:a barometer, for measuring an atmospheric pressure of an operating environment of the fan; anda maximum rotating speed setting unit, for setting a maximum operable rotating speed of the fan according to the atmospheric pressure.2. The fan control device of claim 1 , wherein the maximum rotating speed setting unit sets the maximum operable rotating speed of the fan as a predefined low elevation maximum operable rotating speed when the atmospheric pressure is greater than a predefined atmospheric pressure;wherein an operating current of the fan is a maximum operating current when the maximum rotating speed setting unit drives the fan in the predefined low elevation maximum operable rotating speed.3. The fan control device of claim 1 , wherein the maximum rotating speed setting unit sets the maximum operable rotating speed of the fan to be greater than a predefined low elevation maximum operable rotating speed when the atmospheric pressure is less than a predefined atmospheric pressure.4. The fan control device of claim 3 , wherein the maximum rotating speed setting unit increases the maximum operable rotating speed of the fan until an operating current of the fan is equal to the maximum operating current;wherein the maximum rotating speed setting unit drives the fan in a high elevation maximum operable rotating speed with the maximum operating current, and sets the maximum operable rotating speed of the fan as the high elevation maximum operable rotating speed.5. The fan control device of claim 4 , wherein the maximum rotating speed setting unit directly sets the maximum ...

Подробнее
10-10-2013 дата публикации

Housing structure of exhaust gas turbocharger

Номер: US20130266436A1
Принадлежит: Mitsubishi Heavy Industries Ltd

A casing treatment 4 including a recirculation passage 41 and a mixing piping 6 are provided. The recirculation passage 41 has a first recirculation opening 42 and a second recirculation opening 43 that are in communication with each other, the first recirculation opening 42 being formed inside a compressor housing 11 of an exhaust gas turbocharger and opening to an air passage 15 upstream of a compressor impeller 3 , the second recirculation opening 43 being formed at the outer circumferential section of the compressor impeller 3 . The mixing pipe 6 opens to the recirculation passage 41 and has a return opening 14 for introducing EGR gas and blow-by gas to the recirculation passage 41.

Подробнее
17-10-2013 дата публикации

Heating apparatus

Номер: US20130272685A1
Принадлежит: Dyson Technology Ltd

Heating apparatus includes an air inlet, a plurality of air outlets, an impeller, a motor for rotating the impeller to draw air through the air inlet, a user interface for allowing a user to select a rotational speed of the motor from a user selectable range of values, and a plurality of heater assemblies each comprising at least one positive temperature coefficient (PTC) heating element for heating air passing from the air inlet to a respective air outlet. The magnitude of a current drawn by the heater assemblies is detected, and the rotational speed of the motor is controlled independently from the rotational speed selected by the user depending on a characteristic of the current drawn by the heater assemblies.

Подробнее
17-10-2013 дата публикации

COMPRESSED GAS SUPPLY UNIT, COMPRESSED GAS SUPPLY APPARATUS AND CONTROL METHOD OF SAID UNIT AND SAID APPARATUS

Номер: US20130272840A1
Принадлежит:

A compressed gas supply unit includes compressors. Gas discharged from the compressors is stored in a storage tank and then supplied to a gas recipient. The pressure of the storage tank, the operation temperature and the power consumption of each compressor, and the temperature around the compressors are sent to a controller and a monitoring device. A determination unit of the controller determines the presence or absence of the abnormality of the compressor from a difference between the operation temperature of the compressor and the temperature around the compressors. An effective load calculation unit calculates the effective load of each compressor from the power consumption of the compressor and the pressure of the storage tank. The controller controls the compressors based on the calculated effective load such that the loads of the compressors are equalized. An estimation unit estimates maintenance timing from the effective load. 1. A compressed gas supply unit comprising a plurality of compressors , a storage tank which stores discharge gas of the compressors , a compressed gas supply pipe which supplies compressed gas to a gas recipient from the storage tank , and a pressure sensor which detects a pressure of the storage tank , the compressed gas supply unit controlling an operation of each of the compressors based on a detected value of the pressure sensor , and comprising:an operating state amount sensor which detects an operating state amount of the compressor;a power sensor which detects a power consumption of each compressor; anda controller which controls the operation of each compressor, whereinthe controller comprises a determination unit which determines that the compressor is abnormal when the detected value of the operating state amount sensor exceeds a threshold, an effective load calculation unit which calculates an effective load of each compressor from the detected values of the power sensor and the pressure sensor, and an estimation unit ...

Подробнее
17-10-2013 дата публикации

AXIAL COMPRESSOR AND CONTROL METHOD THEREOF TO STABILIZE FLUID

Номер: US20130272845A1
Принадлежит:

A fluid stabilizing control method of an axial compressor is provided, which includes driving to drive the axial impeller, and stall controlling to suppress or prevent an occurrence of a stall that may transpire during rotation of the axial impeller by supplying highly-pressurized compressed air into the casing through a stall controller according to a predetermined time and volume. Accordingly, a stall may be suppressed or prevented, the occurrence of a stall that may transpire when a threshold point is exceeded by an unexpected event during driving in a low-flow high-pressure section on a performance curve, in which efficiency is high. Additionally, since an air injection method for suppressing the stall is properly applied, an amount of power expended for the stall control may be reduced while supply of the high-pressure compressed air is minimized, thereby achieving economically feasible stall control. 1. An axial compressor comprising:a casing which is configured to include a plurality of stators provided on an inner surface and such that a fluid as a compression object is introduced and discharged;an axial impeller configured to rotate within the casing and to include a plurality of rotors arranged between neighboring stators of the plurality of stators; anda stall controller configured to suppress or prevent an occurrence of a stall that may transpire during rotation of the axial impeller by supplying highly-pressurized compressed air into the casing according to a predetermined time and volume.2. The axial compressor of claim 1 , wherein the stall controller comprises a pulsator mounted on a transfer line which connects an injection nozzle for injecting highly-pressurized compressed air into the casing with a blower for supplying highly-pressurized compressed air claim 1 , so as to pulsatively inject the highly-pressurized compressed air.3. The axial compressor of claim 2 , wherein the pulsator increases a supplied volume of the highly-pressurized compressed ...

Подробнее
24-10-2013 дата публикации

Axial fan and control method thereof

Номер: US20130280029A1
Принадлежит: Delta Electronics Inc

An axial fan includes a fan frame, an impeller and a motor. The fan frame has a frame body, a base and plural connecting members. The base is disposed at the center of a side of the frame body. The connecting members connect the frame body to the base. The impeller is accommodated in the frame body and disposed on the base. The impeller has a rotating shaft, a hub and plural blades disposed around the hub. The motor is disposed on the base and connects with the rotating shaft to drive the impeller to rotate. When the impeller rotates forwardly, the airflow is induced to flow through the connecting members, blades, and one side of the frame body away from the base. When the impeller rotates reversely, the airflow is induced to flow through the side of the frame body, blades and connecting members.

Подробнее
31-10-2013 дата публикации

Inverter control device, electric compressor, and electric device

Номер: US20130285586A1
Принадлежит: Panasonic Corp

An inverter control device of the present invention operates by synchronous commutation in which a commutation signal waveform is output with an electric angle of less than 180 degrees at a predetermined frequency according to a target rotation speed of a brushless DC motor. In order to maintain an induced voltage phase of a brushless DC motor at a predetermined phase with respect to an output voltage of an inverter circuit unit, even in an operation by the synchronous commutation, the output voltage of the inverter circuit unit is changed according to a change in state of the induced voltage phase of the brushless DC motor to continue a running state of the motor. Therefore, a more stable motor operation can be performed during synchronous running by the forced commutation.

Подробнее
31-10-2013 дата публикации

METHOD AND SYSTEM FOR IDENTIFYING AND CONTROLLING A CENTRIFUGAL PUMP

Номер: US20130287596A1
Принадлежит: Schneider Toshiba Inverter Europe SAS

The invention relates to a method and a system for controlling a centrifugal pump () actuated by an electric motor (). The control method comprises: 22. Control method according to claim 1 , characterized in that the second step claim 1 , the third step and the fourth step are carried out for several speeds applied to the electric motor ().36. Control method according to claim 1 , characterized in that claim 1 , for a selected speed claim 1 , the third step and the fourth step are carried out for each operating point of the solenoid valve ().5303. Control system according to claim 4 , characterized in that the control and processing unit () is included in the variable speed drive ().66. Control method according to claim 2 , characterized in that claim 2 , for a selected speed claim 2 , the third step and the fourth step are carried out for each operating point of the solenoid valve (). The present invention relates to a method and a system for identifying and controlling a centrifugal pump.A pumping circuit in which a centrifugal pump is included is driven by a control system.This control system comprises an electric motor actuating the centrifugal pump and controlled by a variable speed drive. The system also comprises a valve or a cock making it possible to control the flow rate in the pumping circuit. In normal operation, the control of the centrifugal pump is carried out on the basis of pump curves. These pump curves are defined for a single speed called the nominal speed and represent the pressure as a function of the flow rate, the mechanical power as a function of the flow rate. For a speed other than the nominal speed, there are laws of extrapolation called Rateau laws for creating the link between the magnitudes of the pumping circuit (pressure, flow rate) and the mechanical magnitudes (power, speed):Flow rate=Flow rate_NominalSpeed×(Speed/NominalSpeed)Pressure=Pressure_NominalSpeed×(Speed/NominalSpeed)Power=Power_NominalSpeed×(Speed/NominalSpeed)The pump ...

Подробнее
07-11-2013 дата публикации

Quick-release vacuum pump

Номер: US20130291966A1
Автор: Ho-Young Cho
Принадлежит: Korea Pneumatic System Co Ltd

A quick-release vacuum pump. A vacuum pump part has a cylindrical hollow area extending between an inlet and an outlet and nozzles disposed in series inside the hollow area and have slots therein, both ends of the nozzles communicating with each other between the inlet and the outlet. A release part includes a support tube formed above a suction port, a skirt-type check valve to be moved up and down by air pressure to open and close the support tube, and a pressure chamber formed in a passage communicating with the suction port and passes by a valve skirt. A filter material disposed between the suction port and the support tube allows discharge air to pass through upward when the pump part operates, and is cleaned by air supplied to the suction port through the support tube from the pressure chamber when the pump part stops operating.

Подробнее
21-11-2013 дата публикации

Trash Receptacle With Vacuum Release Vents

Номер: US20130306639A1
Автор: Kastner David
Принадлежит:

A trash receptacle assembly includes a receptacle container having an interior formed by side and bottom walls thereof. An exhaust tube fluidly communicates with the interior of the receptacle container. An air exhaust arrangement fluidly communicates with an exterior end of the exhaust tube. A portable power source electrically connected to the air exhaust arrangement. An electrical relay, timer, reversible switch, etc. can be provided to control the flow of electrical current from the power source to the air exhaust arrangement. 1. A trash receptacle with integral vacuum release vents , comprising:a receptacle opening at a top of a trash receptacle;one or more substantially flat interior walls within an interior of the trash receptacle;one or more substantially flat exterior walls at an exterior of the trash receptacle;one or more elongated, convex panels formed at the exterior walls, each said convex panel substantially vertically extends at the exterior walls from a vicinity of the receptacle opening to a vicinity of a bottom of the trash receptacle; andone or more exterior vertical airway columns formed at the exterior walls, each said exterior airway column is open at the top of the receptacle, each said exterior airway column is enclosed on sides and bottom thereof by the respective convex panel and by the respective exterior wall of the trash receptacle, so that when a liner bag is inserted into the interior of the trash receptacle, the exterior airway columns facilitate air communication between the exterior and the interior of the_receptacle to prevent creation of a partial vacuum between the liner bag and the interior of the trash receptacle as the liner bag expands within the interior upon filling.2. The trash receptacle according to claim 1 , wherein a principal air opening passes through said exterior and interior walls at the bottom of each said airway column claim 1 , so as to enable air to flow along each said airway column and through exterior and ...

Подробнее
21-11-2013 дата публикации

ELECTRIC PUMP DEVICE

Номер: US20130309101A1
Автор: Uda Kengo
Принадлежит: JTEKT CORPORATION

An electric pump device of an aspect of the invention includes a state determination unit and a gain adjusting unit. The state determination unit determines whether or not the electric pump device is in a stable state where a required oil pressure is supplied to a hydraulic operating device by maintaining a rotation state of a motor. The gain adjusting unit adjusts a gain for a current feedback control so as to reduce responsiveness of the current feedback control when the state determination unit determines that the electric pump device is in the stable state. 1. An electric pump device comprising:an oil pump which generates oil pressure;a motor which drives the oil pump; anda control device which controls operation of the oil pump by supplying driving power to the motor, a control signal output unit which outputs a motor control signal; and', 'a driving circuit which outputs the driving power based on the motor control signal,, 'wherein the control device compriseswherein the control signal output unit generates the motor control signal by executing a current feedback control so as to cause an actual current value supplied to the motor to follow a current command value corresponding to a target oil pressure, and a state determination unit which determines whether or not the electric pump device is in a stable state where the required oil pressure is supplied to a hydraulic operating device by maintaining a rotation state of the motor; and', 'a gain adjusting unit which adjusts a gain for the current feedback control so as to reduce responsiveness of the current feedback control when the state determination unit determines that the electric pump device is in the stable state., 'wherein said electric pump device further comprises2. The electric pump device according to claim 1 ,wherein the state determination unit determines whether or not the electric pump device is in the stable state based on a parameter indicating a rotation state of the motor. The present ...

Подробнее
28-11-2013 дата публикации

COUPLED OUTLET VANE DEVICE/ANGULAR ADJUSTMENT

Номер: US20130315717A1
Автор: Weule Jan
Принадлежит:

A device for adjusting the angle of vanes of an outlet vane device of a compressor and to a method of assembling such a device is provided. The device includes multiple angularly adjustable vanes, each of which is mounted on a shaft in a housing. Each shaft has a lever which is guided using a slotted guide arranged on an adjusting ring such that the angular adjustment of the outlet vane device is coupled to an inlet vane device of the compressor, the vanes are first mounted onto the respective shaft, rollers are mounted on the respective lever, the slotted guides are mounted onto the adjusting ring, and the adjusting ring is mounted onto the inlet vane device. The shafts are mounted in the housing, and the levers are mounted onto the respective shaft. The inlet vane device is then mounted into the housing, the rollers being introduced into the respective slotted guide, whereby the angular adjustment is coupled. 110-. (canceled)11. A radial geared compressor , with a compressor stage comprising:an inlet guide vane apparatus with a plurality of vanes which are angularly adjustable by means of an angular adjustment arrangement;an exit guide vane apparatus with a plurality of vanes which are angularly adjustable by means of an angular adjustment arrangement;a device for the coupled angular adjustment of the vanes of the exit guide vane apparatus and of the vanes of the inlet guide vane apparatus of the compressor stage of the geared compressor,wherein the geared compressor includes a plurality of compressor stages which are grouped around a bull gear,wherein the geared compressor has a plurality of parallel shafts which in each case carry one or two impellers which is, or are, accommodated in scroll casings,wherein the plurality of parallel shafts are driven by the bull gear,wherein the vanes of the exit guide vane apparatus are mounted in each case on a shaft in a casing of the compressor stage and the shafts have in each case an adjusting lever which is guided using a ...

Подробнее
28-11-2013 дата публикации

COMPACT CABLE SUSPENDED PUMPING SYSTEM FOR LUBRICATOR DEPLOYMENT

Номер: US20130315751A1
Принадлежит: ZEITECS B.V.

A method of installing or retrieving a pumping system into or from a live wellbore includes connecting a lubricator to a production tree of the live wellbore and raising or lowering one or more downhole components of the pumping system from or into the wellbore using the lubricator. 1. A pumping system , comprising:a submersible high speed electric motor operable to rotate a drive shaft;a high speed pump rotationally connected to the drive shaft and comprising a rotor having one or more helicoidal vanes;an isolation device operable to engage a production tubing string, thereby fluidly isolating an inlet of the pump from an outlet of the pump and rotationally connecting the motor and the pump to the production tubing string;a cablehead operable to receive a lower end of a power cable; and receive a direct current power signal from the cablehead, and', 'supply a second power signal to the motor., 'a submersible power conversion module (PCM) operable to2. The pumping system of claim 1 , further comprising the power cable having two or less conductors and a strength sufficient to support the motor claim 1 , the pump claim 1 , the isolation device claim 1 , and the PCM.3. The pumping system of claim 2 , further comprising a pump hanger:receiving an upper end of the power cable, andhaving electrical contacts disposed along an outer surface thereof for engagement with a production tubing hanger.4. The pumping system of claim 2 , further comprising a lubricator comprising a tool housing operable to contain the pump claim 2 , motor claim 2 , isolation device claim 2 , and PCM.5. The pumping system of claim 4 , wherein:the lubricator further comprises first and second seals,each seal is operable between an extended position and a retracted position, andeach seal clears a bore in the retracted position, andseals against the cable in the extended position.6. The pumping system of claim 5 , wherein:the lubricator further comprises a lander operable to fasten to a profile of a ...

Подробнее
28-11-2013 дата публикации

Neural network-based turbine monitoring system

Номер: US20130318018A1
Принадлежит: General Electric Co

A neural network-based system for monitoring a turbine compressor. In various embodiments, the neural network-based system includes: at least one computing device configured to monitor a turbine compressor by performing actions including: comparing a monitoring output from a first artificial neural network (ANN) about the turbine compressor to a monitoring output from a second, distinct ANN about the turbine compressor; and predicting a probability of a malfunction in the turbine compressor based upon the comparison of the monitoring outputs from the first ANN and the second, distinct ANN.

Подробнее
05-12-2013 дата публикации

ANTI-SURGE SPEED CONTROL

Номер: US20130323082A1
Принадлежит:

The present invention relates to a method and control system to control the speed of a centrifugal compressor operating within a vacuum pressure swing adsorption process to avoid an operation at which surge can occur and directly driven by an electric motor that is in turn controlled by a variable frequency drive. In accordance with present invention an optimal speed for operation of the compressor is determined at which the compressor will operate along a peak efficiency operating line of a compressor map thereof. This speed is adjusted by a feed back speed multiplier when the flow or other parameter referable to flow through the compressor is below a minimum and a feed forward multiplier during evacuation and evacuation with purge steps that multiplies the feed back multiplier to increase speed of the compressor and thereby avoid surge. 1. A method of controlling speed of a centrifugal compressor operating within a vacuum pressure swing adsorption apparatus and directly driven by an electric motor controlled by a variable frequency drive , said method comprising:measuring and calculating a parameter referable to a flow rate of gas entering the centrifugal compressor;measuring and calculating a pressure ratio of outlet to inlet pressure of the compressor;determining an optimal speed of the centrifugal compressor based on the pressure ratio and that lies along the peak efficiency operating line of the centrifugal compressor;determining a minimum allowable value of the parameter at which the centrifugal compressor is likely to enter surge conditions at the optimal speed;determining a feed back multiplier that when multiplied by the optimal speed will either increase the speed when the parameter is less than the minimum allowable value or will reduce the speed when the parameter is greater than or equal to the minimum allowable value;during steps of a repeating cycle conducted by the vacuum pressure swing adsorption apparatus where the centrifugal compressor is at ...

Подробнее
19-12-2013 дата публикации

FAN CONTROL METHOD, FAN MODEL IDENTIFICATION METHOD, AND FAN CONTROL CIRCUIT

Номер: US20130336760A1
Принадлежит:

A fan control method is to be implemented by a control circuit for controlling a fan coupled thereto. The fan control method includes configuring the control circuit to output a driving signal to the fan such that the fan rotates according to the driving signal, to detect a rotational speed of the fan and to generate a feedback signal corresponding to the rotational speed thus detected, to identify a model of the fan according to the feedback signal thus generated, and to control rotation of the fan according to the model thus identified. 1. A fan control method that is to be implemented by a control circuit for controlling a fan coupled thereto , the fan control method comprising:(A) configuring the control circuit to output a driving signal to the fan such that the fan rotates according to the driving signal;(B) configuring the control circuit to detect a rotational speed of the fan and to generate a feedback signal corresponding to the rotational speed thus detected;(C) configuring the control circuit to identify a model of the fan according to the feedback signal generated in step (B); and(D) configuring the control circuit to control rotation of the fan according to the model identified in step (C).2. The fan control method as claimed in claim 1 , wherein claim 1 , in step (A) claim 1 , the driving signal is a pulse signal having a specific duty cycle.3. The fan control method as claimed in claim 2 , the control circuit including a memory module which stores a plurality of fan models of fans and a plurality of rotational speeds corresponding respectively to the fan models of the fans when driven by a signal with the specific duty cycle claim 2 ,wherein, in step (C), the control circuit is configured to compare the feedback signal with the rotational speeds stored in the memory module so as to identify the model of the fan.4. The fan control method as claimed in claim 3 , each of the plurality of the fan models corresponding to a rotational speed range which is ...

Подробнее
26-12-2013 дата публикации

Four bar drive mechanism for bleed system

Номер: US20130341547A1
Принадлежит: Individual

An actuation system for a bleed valve includes first and second bell cranks connected by a connecting link. The first bell crank has a first arm that is coupled to a bleed valve and a second arm that is coupled to the connecting link. The connecting link has a first end coupled to the second arm of the first bell crank and a second end coupled to a first arm of the second bell crank. A second arm of the second bell crank is coupled to an actuating element. Input is communicated through the actuating element to move the bleed valve between open and closed positions via the first and second bell cranks.

Подробнее
26-12-2013 дата публикации

Spherical-link end damper system with near constant engagement

Номер: US20130343876A1
Принадлежит: United Technologies Corp

A link includes a link body with two ends, a ring bore with a ring bore axis and a bearing, a mount bore with a mount bore axis and a bearing. The link also has an end curvature at the end having the ring bore wherein the curvature axis is substantially perpendicular to the ring bore axis.

Подробнее
02-01-2014 дата публикации

Centrifugal compressor

Номер: US20140003930A1
Принадлежит: Toyota Motor Corp

A compressor has a hub-side wall of a hub-side wall plate, a shroud-side wall that faces the hub-side wall and forms a diffuser path between the shroud-side wall and the hub-side wall, vanes that protrude from the hub-side wall plate into the diffuser path, and an actuator capable of changing the distance between the vanes and the shroud-side wall in accordance with a flow rate of air in the diffuser path. Adjacent ones of the adjacent vanes do not overlap with each other when viewed from a center axis of the compressor. When the actuator maximizes the distance between the vanes and the shroud-side wall, the distance between the vanes and the shroud-side wall is smaller than the distance between the hub-side wall and areas of the shroud-side wall that face the vanes.

Подробнее
09-01-2014 дата публикации

Turbomachine with variable-pitch vortex generator

Номер: US20140010638A1
Принадлежит: SNECMA SAS

The present invention relates to a turbomachine comprising at least one bladed disk, be it mobile or static, and vortex generators ( 17 ) positioned upstream of the blading ( 1 ) of said disk, wherein the vortex generators ( 17 ) are of variable pitch.

Подробнее
23-01-2014 дата публикации

COMBUSTION BLOWER CONTROL FOR MODULATING FURNACE

Номер: US20140023976A1
Принадлежит:

A furnace includes a combustion blower and one or more pressure switches. In some cases, the one or more pressure switches may be used to calculate one or more operating points for the combustion blower. Additional operating points may be calculated by interpolation and/or extrapolation, as appropriate. The furnace may temporarily alter these operating points as necessary to keep the furnace safely operating in response to minor and/or transient changes in the operating conditions of the furnace. 1. A method of operating a variable speed combustion blower of a combustion appliance that has three or more different firing rates , including a lower firing rate , a higher firing rate and a first intermediate firing rate between the lower firing rate and the higher firing rate , each of the three or more firing rates having a different corresponding combustion blower speed , the combustion appliance further having a first pressure switch and a second pressure switch , the method comprising:changing the blower speed of the variable speed combustion blower until the first pressure switch changes state;determining a first blower speed that is related to when the first pressure switch changes state;changing the blower speed of the variable speed combustion blower until the second pressure switch changes state;determining a second blower speed that is related to when the second pressure switch changes state; andidentifying a blower speed that corresponds to the first intermediate firing rate of the three or more different firing rates of the combustion appliance by interpolating and/or extrapolating from the first blower speed and the second blower speed.2. The method of claim 1 , wherein changing the blower speed of the variable speed combustion blower until the first pressure switch changes state includes increasing the blower speed until the first pressure switch closes.3. The method of claim 2 , further comprising decreasing the blower speed until the first pressure ...

Подробнее
30-01-2014 дата публикации

Relief valve

Номер: US20140026560A1
Автор: Michael Dobrowolski
Принадлежит: MTU Friedrichshafen GmbH

A relief valve for turbines of exhaust turbochargers. Hot exhaust gas flows against this type of relief valves and the relief valves heat up significantly. Sensitive components such as the springs or the membrane can be damaged as a result. The relief valves are normally designed so that the membrane and a radiation panel are adjacent to a first chamber. Air is continuously guided through the first chamber in order to specifically cool the membrane and protect the membrane from excessive heating.

Подробнее
30-01-2014 дата публикации

Methods and controllers for providing a surge map for the monitoring and control of chillers

Номер: US20140026598A1
Принадлежит: Johnson Controls Technology Co

A controller for a chiller includes processing electronics configured to detect a plurality of surge events. The processing electronics create a surge map by calculating and plotting a point for each detected surge event in an at least two dimensional coordinate system. The surge map is displayed through the use of an electronic display system. The surge map describes at least three conditions of the chiller when the surge event was detected through the use of axis and non-axis representations. The processing electronics are further configured to control at least one setpoint for the chiller using the calculated surge map.

Подробнее
30-01-2014 дата публикации

Enhanced Turbocompressor Startup

Номер: US20140030058A1
Принадлежит: COMPRESSOR CONTROLS CORPORATION

A control method and apparatus for startup of turbocompressors to avoid overpowering a driver of the turbocompressor. In a first embodiment, the control system monitors input signals from transmitters of various control inputs. When the input signals exceed threshold values, the control system begins to close the antisurge valve. In a second embodiment, the antisurge valve begins to close after a predetermined time measured from the time startup is initiated. In both embodiments, the antisurge valve continues to ramp closed until the compressor has reached its operating zone, or until the compressor's operating point reaches a surge control line, at which point the antisurge valve is manipulated to keep the compressor from surging. 1. A method of minimizing an energy required to start a turbocompressor having an antisurge valve and a control system , the method comprising:(a) opening the antisurge valve fully;(b) initiating a startup of the turbocompressor;(c) increasing a rotational speed of the turbocompressor from a zero rotational speed; and(d) actuating the antisurge valve toward its closed position before said turbocompressor reaches a minimum operating rotational speed.2. The method of wherein an initiation of a closing of the antisurge valve comprises:(a) inputting at least one signal to the control system;(b) comparing a magnitude of the at least one signal with a minimum threshold value; and(c) initiating the closing of the antisurge valve when the magnitude of the at least one signal exceeds the minimum threshold value.3. The method of wherein an initiation of a closing of the antisurge valve comprises:(a) initializing a timer to an initial value at a time of initiating the startup of the turbocompressor;(b) measuring time elapsed from the initial value;(c) comparing the measured time with a threshold value; and(d) initiating the closing of the antisurge valve when the elapsed time exceeds the threshold value.4. The method of wherein the minimum operating ...

Подробнее
30-01-2014 дата публикации

CONTROL METHOD AND CONTROL SYSTEM OF FAN

Номер: US20140030091A1
Принадлежит: DELTA ELECTRONICS, INC.

A control method of a fan comprises steps of detecting a rotational speed of a blade and a rotor position of the blade; generating a control signal according to the rotational speed and a predetermined rotational speed; obtaining a Back-EMF waveform according to the control signal, the rotational speed, the rotor position and a waveform; adjusting the phase of the Back-EMF waveform; and outputting a switch control signal. 1. A control method of a fan , comprising steps of:detecting a rotational speed of a blade and a rotor position of the blade;generating a control signal according to the rotational speed and a predetermined rotational speed;obtaining a Back-EMF waveform according to the control signal, the rotational speed, the rotor position and a waveform;adjusting the phase of the Back-EMF waveform; andoutputting a switch control signal.2. The control method as recited in claim 1 , wherein the rotational speed and the predetermined rotational speed are compared with each other to generate the control signal.3. The control method as recited in claim 1 , wherein the control signal is for the increasing effect.4. The control method as recited in claim 1 , wherein the control signal is for the decreasing effect.5. The control method as recited in claim 1 , wherein the waveform is derived from a motor.6. The control method as recited in claim 5 , wherein the motor generates a first sine-like wave signal claim 5 , and the control method further comprises steps of:a voltage-transforming unit receiving and adjusting the first sine-like wave signal to output a second sine-like wave signal;an analog-to-digital converting unit generating a plurality of sampling signals according to the second sine-like wave signal;the analog-to-digital converting unit storing the sampling signals in a data table; andgenerating the waveform according to the data table7. The control method as recited in claim 6 , wherein the voltage-transforming unit has a first resistance and a second ...

Подробнее
06-02-2014 дата публикации

Flow discharge device

Номер: US20140033733A1
Принадлежит: Rolls Royce PLC

A bleed flow discharge device ( 136 ) adapted to discharge a bleed fluid flow into a main fluid flow, wherein the bleed flow discharge device comprises an outer wall ( 135 ) defining a passage ( 137 ) for the bleed fluid flow, the outer wall comprising a wave-shaped edge ( 139 ) where the bleed fluid flow meets the main fluid flow.

Подробнее
06-02-2014 дата публикации

Method for controlling a regulated-rotation-speed low-pressure centrifugal fan

Номер: US20140037426A1
Принадлежит: Runtech Systems OY

A method for controlling an automatic stall-prevention of a rotation-speed-regulated centrifugal fan. A control automatics is controlled by an automation system of the process wherein, the control automatics stalling is detected from a function of the electric current, voltage and frequency going to the motor of the centrifugal fan.

Подробнее
06-02-2014 дата публикации

Dynamic Compensation of Airflow in Electronics Enclosures with Failed Fans

Номер: US20140037462A1

An approach is provided in which a cooling manager detects a failed fan included in an electronic enclosure. The electronic enclosure includes multiple fans that each cool different component areas in the electronic enclosure. The cooling manager selects an airflow compensator that corresponds to a functioning fan included in the electronic enclosure, which includes a fixed perforated member and a movable perforated member. In turn, the cooling manager adjusts the selected airflow compensator to redirect a portion of airflow generated by the functioning fan to the component area corresponding to the failed fan. 1. A method comprising:detecting a failed fan from a plurality of fans included in an electronic enclosure, wherein each of the plurality of fans corresponds to one of a plurality of component areas in an electronic enclosure;selecting an airflow compensator from a plurality of airflow compensators in response to the detecting, wherein the selected airflow compensator corresponds to a functioning fan included in the plurality of fans and comprises a fixed perforated member and a movable perforated member; andadjusting the selected airflow compensator to direct a portion of airflow generated by the functioning fan to the one of the plurality of component areas corresponding to the failed fan.2. The method of wherein the plurality of component areas are in a single open area allowing the generated airflow to dispense between two or more of the plurality of component areas.3. The method of further comprising:identifying a fan speed value that corresponds to the functioning fan; andoverriding the fan speed value with a higher speed value that instructs the functioning fan to operate at higher speed.4. The method of further comprising:identifying a number of failed fans in response to the detecting;determining that the number of failed fans is greater than or equal to two;identifying one or more remaining functioning fans included in the plurality of fans, the ...

Подробнее
13-02-2014 дата публикации

AIR BLOWER AND CONTROL METHOD THEREOF

Номер: US20140044558A1
Принадлежит: Mitsubishi Electric Corporation

When blowing out air, an air blower provides a user with feeling of being exposed to natural wind. A control unit of an air conditioner controls a fan motor of the air conditioner so that an airflow speed of a fan of the air conditioner changes over time with a synthesis pattern composed of a plurality of patterns including a sine-wave-like waveform pattern and a hill-like variation pattern having a width of less than a quarter cycle of the waveform pattern and a height of equal to or greater than an amplitude of the waveform pattern for each cycle of the waveform pattern. 1. An air blower comprising:a fan blowing air;a fan motor driving the fan; anda control unit controlling the fan motor so that an airflow speed of the fan changes over time with a synthesis pattern composed of a plurality of patterns including a sine-wave-like waveform pattern and a hill-like variation pattern having a width of less than a quarter cycle of the waveform pattern and a height of equal to or greater than an amplitude of the waveform pattern for each cycle of the waveform pattern.2. The air blower of claim 1 , wherein the plurality of patterns include claim 1 , as the variation pattern claim 1 , two types of variation patterns of which height and occurrence timing in one cycle of the waveform pattern are different with each other.3. The air blower of claim 2 , wherein the variation pattern having a higher height out of the two types of variation patterns reaches a maximum value in a shorter time than the variation pattern having a lower height.4. The air blower of claim 1 , wherein the variation pattern increases a value in two or more stages to reach a maximum value.5. The air blower of claim 1 , wherein the variation pattern maintains a maximum value for a certain time period.6. The air blower of claim 1 , wherein the plurality of patterns further include a hill-like first added pattern claim 1 , having a height of less than the amplitude of the waveform pattern for each cycle of the ...

Подробнее
20-02-2014 дата публикации

Vacuum Pump and Rotor Thereof

Номер: US20140050607A1
Автор: Takashi Kabasawa
Принадлежит: Edwards Japan Ltd

A rotor of a vacuum pump has a circular member that is driven rotatably, a cylindrical member joined to an outer circumference of the circular member, and a thread groove pump flow path formed between the cylindrical member and a stator member surrounding an outer circumference of the cylindrical member. The cylindrical member is made of a material having at least a feature of lower thermal expansivity or lower creep rate than that of a material of the circular member. A gap of a second region provided between a non-joint portion of the cylindrical member and the stator member is set to be smaller than a gap of a first region provided between a joint portion of the cylindrical member and the stator member.

Подробнее
27-02-2014 дата публикации

INTEGRATED METHOD OF DRIVING A CO2 COMPRESSOR OF A CO2-CAPTURE SYSTEM USING WASTE HEAT FROM AN INTERNAL COMBUSTION ENGINE ON BOARD A MOBILE SOURCE

Номер: US20140056687A1
Принадлежит: Saudi Arabian Oil Company

An integrated system and method for driving a COcompressor to densify COcaptured from the exhaust gas stream of an internal combustion engine on board a mobile source of COincludes operating a turbine that is operatively connected to the power input or drive shaft of the COcompressor, and operatively connecting a motor-generator to the turbine for (a) recovery of any excess power when the turbine-generated power exceeds the COcompressor power demand and (b) providing supplemental power when the turbine-generated power is insufficient to meet the COcompressor power demand. 1. A method of driving a COcompressor having a drive shaft and a COintake part , comprising the steps of:{'sub': 2', '2, 'providing a turbine having a power output shaft operatively connected to the drive shaft of the COcompressor for driving the COcompressor; and'}{'sub': 2', '2', '2, 'providing a motor-generator operatively connected to the drive shaft of the COcompressor for recovering excess power when the turbine-generated power exceeds the COcompressor power demand, and for supplying supplemental power when the turbine-generated power is insufficient to meet the power demand of the COcompressor.'}2. The method according to claim 1 , wherein the step of providing a turbine includes providing a pressurized working fluid-operated turbine.3. The method according to claim 2 , comprising the step of heating the pressurized working fluid prior to its introduction into the turbine.4. The method according to claim 3 , wherein the COcompressor forms part of a COcapture system for recovery of COfrom the exhaust gas stream of an ICE and its densification for storage on board a mobile source claim 3 , and wherein the heating step comprises using waste heat produced on board the mobile source to heat the pressurized working fluid.5. The method according to claim 3 , wherein the heating step includes heating the pressurized fluid by heat exchange with heat-emitting components of the COcompressor.6. The ...

Подробнее
27-02-2014 дата публикации

PUMP DEVICE AND PUMP SYSTEM

Номер: US20140056696A1
Принадлежит:

A pump device (A) includes: an impeller () that rotates about an axis of rotation (A); an inlet passage () that extends along the axis of rotation (A) of the impeller (); a volute chamber () provided around the impeller (); a high-pressure chamber () provided around the inlet passage (); a circumferential wall () that separates the inlet passage () and the high-pressure chamber (); and a bypass passage () that communicates the volute chamber () and the high-pressure chamber (). The circumferential wall () has a plurality of through holes () provided in a circumferential direction. The central axis (B) of each of the through holes () is included in a plane substantially perpendicular to the axis of rotation (A). The central axis (B) is inclined with respect to a reference line (L). The direction of inclination of the central axis (B) with respect to the reference line (L) is determined so that an inlet passage side opening () of the through hole () is located downstream from a high-pressure chamber () side opening () in a rotational direction of the impeller (). 1. A pump device comprising:an impeller that rotates about an axis of rotation;an inlet passage that extends along the axis of rotation;a volute chamber provided around the impeller;a high-pressure chamber provided around the inlet passage;a circumferential wall that separates the inlet passage and the high-pressure chamber; anda bypass passage that communicates the volute chamber and the high-pressure chamber, whereinthe circumferential wall has a plurality of through holes provided in a circumferential direction,a central axis of each of the through holes is included in a plane substantially perpendicular to the axis of rotation,when a straight line passing through the axis of rotation and a center of a high-pressure chamber side opening of the through hole and perpendicular to the axis of rotation is defined as a reference line, the central axis is inclined with respect to the reference line, anda ...

Подробнее
27-02-2014 дата публикации

MECHANICAL COOLANT PUMP

Номер: US20140056697A1
Принадлежит: PIERBURG PUMP TECHNOLOGY GMBH

A mechanical coolant pump for an internal combustion engine includes a pump rotor wheel comprising rotor blades configured to pump a coolant radially outward. A non-rotating ring of pump stator blades is configured to encircle the pump rotor wheel. At least one of the pump stator blades is a static blade. At least one of the pump stator blades is a pivotable blade configured to pivot about a pivot axis arranged within the pivotable blade. 18-. (canceled)9. A mechanical coolant pump for an internal combustion engine , the mechanical coolant pump comprising:a pump rotor wheel comprising rotor blades configured to pump a coolant radially outward; anda non-rotating ring of pump stator blades configured to encircle the pump rotor wheel, wherein,at least one of the pump stator blades is a static blade(s), andat least one of the pump stator blades is a pivotable blade(s) configured to pivot abouta pivot axis arranged within each respective pivotable blade(s).10. The mechanical coolant pump as recited in claim 9 , wherein the static blade(s) and the pivotable blade(s) are arranged alternately.11. The mechanical coolant pump as recited in claim 9 , wherein the static blade(s) and the pivotable blade(s) have an identical shape.12. The mechanical coolant pump as recited in claim 11 , wherein the pivotable blade(s) are configured to overlap the static blade(s) gap-free when the pivotable blade(s) are in a closed position.13. The mechanical coolant pump as recited in claim 9 , wherein a position of the static blade(s) is identical to an open position of the pivotable blade(s).14. The mechanical coolant pump as recited in claim 9 , wherein the pivot axis of each pivotable blade(s) is disposed in a circumferential middle-third of each respective pivotable blade(s).15. The mechanical coolant pump as recited in claim 9 , wherein the static blade(s) and the pivotable blade(s) are configured to overlap each other in a closed position.16. The mechanical coolant pump as recited in claim ...

Подробнее
06-03-2014 дата публикации

Fan speed control circuit

Номер: US20140062372A1
Принадлежит: Individual

A fan speed control circuit is provided. The circuit includes a control chip. The control chip stores a relationship table recording a number of duty cycle intervals and a number of rotational speeds of a fan. Each duty cycle interval corresponds to one rotational speed of the fan. The control chip obtains a preset number of PWM signals outputted by a processing chip; determines the average value according to the duty cycle of the obtained preset number of PWM signals; determines which duty cycle interval the average value is in, according to the relationship table; determines the rotational speed of the fan corresponding to the determined duty cycle interval according to the relationship table; and controls the fan to rotate according to the determined rotational speed.

Подробнее
06-03-2014 дата публикации

COOLING SYSTEM AND METHOD FOR DATA CENTER

Номер: US20140064916A1
Принадлежит:

Cooling system for a data center includes at least one air-conditioner, at least one air-guiding fan, a first temperature sensor, a second temperature sensor, and a control unit. The air-guiding fan exchanges air between the data center and an external environment of the data center. The first temperature sensor senses an interior temperature of the data center. The second temperature sensor senses an environmental temperature outside of the data center. The control unit controls operating state of the air-conditioner, the first air-guiding fan, and the second air-guiding fan. When the environmental temperature is lower than the interior temperature, the control unit turns off the air-conditioner and the air-guiding fan. 1. A cooling system for a data center , comprising:at least one air-conditioner;at least one air-guiding fan exchanging air between the data center and an external environment of the data center;a first temperature sensor sensing an interior temperature of the data center;a second temperature sensor sensing an environmental temperature of the external environment; anda control unit controlling an operating state of each of the air-conditioner, the first air-guiding fan, and the second air-guiding fan;wherein when the environmental temperature is lower than the interior temperature, the control unit turns off the air-conditioner and turns on the air-guiding fan.2. The cooling system of claim 1 , wherein the at least one air-guiding fan comprises a first air-guiding fan guiding internal air of the data center to the external environment and a second air-guiding fan guiding external air of the external environment into an interior of the data center claim 1 , the first and second air-guiding fan cooperatively define an airflow route in the data center.3. The cooling system of claim 2 , wherein the control unit comprises a processor electrically connected to the first temperature sensor and the second temperature sensor claim 2 , a driver electrically ...

Подробнее
06-03-2014 дата публикации

SYSTEM AND METHOD TO POSITION VARIABLE DIFFUSER VANES IN A COMPRESSOR DEVICE

Номер: US20140064919A1
Принадлежит: Dresser, Inc.

Embodiments of a system and method can modify the position of diffuser vanes to improve performance of a compressor device, e.g., a centrifugal compressor. These embodiments include a feedback loop to manage the position of the diffuser vanes relative to one or more operating characteristics of an actuator that imparts movement to the diffuser vanes. In one embodiment, the system and method measure the operating characteristic for the actuator with the diffuser vanes at a first position and a second position. The system can compare values for the operating characteristics, wherein changes in the operating characteristic can identify other positions for the diffuser vanes to reduce input power the actuator consumes to move and/or maintain the position of the diffuser vanes. This feature can correlate with optimal performance of the compressor device and with peak compressor efficiency within the entire operating envelope of the compressor device. 1. A system , comprising:a compressor device comprising an impeller, a diffuser vane in flow connection with the impeller, and an actuator coupled with the diffuser vane; and receiving a first input comprising data for a first value of an operating characteristic for the actuator with the diffuser vane in a first position;', 'receiving a second input comprising data for a second value of the operating characteristic for the actuator with the diffuser vane in a second position;', 'comparing the first value and the second value;', 'selecting an increment by which to move the diffuser vane from the second position, the increment defining the relative position of the second value with respect to the first value; and', 'generating an output comprising data to instruct the actuator to move the diffuser vane from the second position by the increment., 'a controller coupled to the compressor device, the controller comprising a processor having access to executable instructions stored on memory and configured to be executed by the ...

Подробнее