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 11890. Отображено 100.
20-08-2016 дата публикации

ПОМПА ВОЗВРАТА МАСЛА В КОМПРЕССОР ХОЛОДИЛЬНОЙ УСТАНОВКИ

Номер: RU0000163935U1
Автор: Маслаков Виталий Николаевич
Принадлежит: Общество с ограниченной ответственностью "ОЛЕКС ХОЛДИНГ-М"

1. Устройство возврата масла в компрессор холодильной установки, содержащее маслосборник, снабженный реле уровня и связанный с трубопроводом всасывания компрессора, и эжектор, связанный с трубопроводом нагнетания компрессора через электромагнитный клапан и с трубопроводом всасывания компрессора, отличающееся тем, что маслосборник связан с трубопроводом нагнетания компрессора через электромагнитный клапан и с коллектором всасывания компрессора, а эжектор связан с маслосборником для создания в маслосборнике давления более низкого, чем в трубопроводе всасывания компрессора. 2. Устройство по п. 1, отличающееся тем, что на входе и выходе маслосборника установлены обратные клапаны. 3. Устройство по п. 1, отличающееся тем, что реле уровня масла связано с электромагнитным клапаном, через который маслосборник связан с трубопроводом нагнетания. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F25B 31/00 (11) (13) 163 935 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015155317/06, 23.12.2015 (24) Дата начала отсчета срока действия патента: 23.12.2015 (72) Автор(ы): Маслаков Виталий Николаевич (RU) (73) Патентообладатель(и): Общество с ограниченной ответственностью "ОЛЕКС ХОЛДИНГ-М" (RU) R U Приоритет(ы): (22) Дата подачи заявки: 23.12.2015 (45) Опубликовано: 20.08.2016 Бюл. № 23 1 6 3 9 3 5 R U Формула полезной модели 1. Устройство возврата масла в компрессор холодильной установки, содержащее маслосборник, снабженный реле уровня и связанный с трубопроводом всасывания компрессора, и эжектор, связанный с трубопроводом нагнетания компрессора через электромагнитный клапан и с трубопроводом всасывания компрессора, отличающееся тем, что маслосборник связан с трубопроводом нагнетания компрессора через электромагнитный клапан и с коллектором всасывания компрессора, а эжектор связан с маслосборником для создания в маслосборнике давления более низкого, чем в трубопроводе всасывания компрессора. 2. Устройство по п. 1, ...

Подробнее
Номер записи: 1
19-01-2012 дата публикации

Device for separating lubricant from a lubricant-refrigerating gas mixture discharged from at least one refrigerant compressor

Номер: US20120011872A1
Автор: Jean De Bernardi, Patrice Bonnefoi, Philippe Dewitte, Philippe Dugast
Принадлежит: Danfoss Commercial Compressors SA

The separating device according to the invention comprises a body delimiting a separating chamber, at least one inlet orifice emerging in the separating chamber and intended to be connected to a discharge orifice of the refrigerant compressor so as to allow a lubricant-refrigerating gas mixture to be introduced into the separating chamber, at least one lubricant outlet orifice emerging in the separating chamber and intended to be connected to a lubricant pan formed in the refrigerant compressor. The separating device comprises a first measuring means arranged to measure the temperature of the lubricant contained in the lubricant pan formed in the refrigerant compressor, and a regulating arranged to regulate the temperature of the lubricant separated in the separating chamber as a function of the temperature of the lubricant measured by said first measuring means.

Подробнее
Номер записи: 2
19-01-2012 дата публикации

Discharge muffler and two-stage compressor including the same

Номер: US20120011876A1
Автор: Kenichi Sata, Shuuji Fujimoto
Принадлежит: Daikin Industries Ltd

A discharge muffler includes a muffler container. In the muffler container, refrigerating machine oil is separated from refrigerant gas containing the refrigerating machine oil, and the refrigerating machine oil is stored in a lower space. An inlet of an outlet pipe connected to the muffler container opens in the lower space.

Подробнее
Номер записи: 3
26-01-2012 дата публикации

Centrifugal compressor cooling path arrangement

Номер: US20120017617A1
Автор: Christopher McAuliffe, Craig M. Beers
Принадлежит: Hamilton Sundstrand Corp

An example compressor arrangement includes a first compressor portion configured to compress a fluid and a second compressor portion configured to compress the fluid more than the first compressor portion. The compressor arrangement also includes a motor disposed between the first compressor portion and the second compressor portion. The first compressor portion is configured to communicate the fluid to the second compressor portion along a primary flow path. The second compressor portion is configured to divert at least some of the fluid from the primary flow path, communicating the diverted fluid back to the first compressor portion along a secondary flow path.

Подробнее
Номер записи: 4
29-03-2012 дата публикации

Co2 refrigeration system for ice-playing surfaces

Номер: US20120073319A1
Автор: Serge Dube
Принадлежит: Individual

A CO 2 refrigeration system comprises a condensation reservoir. CO 2 refrigerant is accumulated in the reservoir. The CO 2 refrigerant circulates between supracompression and evaporation loops. The supracompression loop comprises a compression stage for compression CO 2 refrigerant to a supracompression state, a cooling stage in which CO 2 refrigerant releases heat, and a pressure-regulating unit in a line extending from the cooling stage to the condensation reservoir. The pressure-regulating unit maintains a pressure differential between the cooling stage and the condensation reservoir. The evaporation loop comprises an evaporation stage in which CO 2 refrigerant from the condensation reservoir absorbs heat in a heat exchanger. The heat exchanger is connected to an ice-playing surface refrigeration circuit. A second refrigerant cycles in the ice-playing surface refrigeration circuit. The CO 2 refrigerant absorbs heat from the second refrigerant in the heat exchanger. A CO 2 condensation exchanger is also provided.

Подробнее
Номер записи: 5
03-05-2012 дата публикации

Sealed compressor with multiple compressor unit

Номер: US20120107158A1
Автор: Carlos Zamudio, Joe T. Hill
Принадлежит: Individual

A sealed compressor has an outer housing and a separator plate received within the outer housing. The separator plate defines a suction chamber and a discharge pressure chamber within the outer housing. A locating plate is positioned within the suction pressure chamber. The locating plate has a plurality of positioning locations for receiving separate compressor housings. The separator plate has a plurality of positioning openings for receiving the separate compressors. A plurality of compressors are each received within their own housing, and include compressor pump units. The plurality of compressors extend between the openings in the locating plate and through the openings in the separator plate. The separate compressors deliver compressed refrigerant into the discharge pressure chamber.

Подробнее
Номер записи: 6
12-07-2012 дата публикации

Air conditioner

Номер: US20120174614A1
Автор: Eun Jun Cho
Принадлежит: LG ELECTRONICS INC

According to the present invention, an air condition comprises: a first compressor and a second compressor which compress a refrigerant through multiple stages; a condenser which condenses the refrigerant compressed by the second compressor; a first flow channel through which a portion of the refrigerant condensed by the condenser passes, in order to be cooled; a supercooling heat exchanger having a second flow channel for exchanging heat with the first flow channel; an expansion instrument which expands the refrigerant cooled by the supercooling heat exchanger; a shell-tube-type evaporator which evaporates the refrigerant expanded by the expansion instrument, and which is connected to a location requiring cold water via a water pipe to supply cold water to said location requiring cold water; a first bypass channel which guides the refrigerant condensed in the condenser to the second flow channel; a supercooling expander installed in the first bypass channel; and a second bypass channel which interconnects the first and second compressors and the second flow channel, thereby decreasing discharge superheat, and thus increasing the degree of subcooling, and improving the efficiency of supplying cold water.

Подробнее
Номер записи: 7
19-07-2012 дата публикации

Air-conditioning apparatus

Номер: US20120180513A1
Автор: Koji Yamashita, Yuji Motomura
Принадлежит: Mitsubishi Electric Corp

To provide an air-conditioning apparatus capable of achieving energy saving. The air-conditioning apparatus capable of executing an oil collection mode that collects a refrigerating machine oil stagnating in heat exchangers related to heat medium into a compressor by changing a flow velocity or a flow direction of the refrigerant flowing in the heat exchangers related to heat medium depending on each operation mode.

Подробнее
Номер записи: 8
13-09-2012 дата публикации

Parameter control in transport refrigeration system and methods for same

Номер: US20120227427A1
Автор: Gilbert B. Hofsdal, Hans-Joachim Huff, Lucy Yi Liu, Suresh Duraisamy
Принадлежит: Carrier Corp

Embodiments of transport refrigeration systems, apparatus, and/or methods for the same can provide exemplary verification for operating characteristics thereof. In one embodiment, a calculated compressor mid stage pressure can be verified using a prescribed relationship to other transport refrigeration system characteristics.

Подробнее
Номер записи: 9
20-09-2012 дата публикации

Economized vapor compression circuit

Номер: US20120234036A1
Автор: Mustafa Kemal Yanik
Принадлежит: Johnson Controls Technology Co

An economized vapor compression circuit is disclosed. An evaporator, compressor, condenser and economizer are fluidly connected by a refrigerant line containing refrigerant. A portion of the liquid refrigerant leaving the economizer is diverted away from the evaporator to sub-cool liquid refrigerant at a location between the condenser and the evaporator.

Подробнее
Номер записи: 10
06-12-2012 дата публикации

Air conditioner

Номер: US20120304685A1
Автор: Yukio Kiguchi
Принадлежит: Toshiba Carrier Corp

An air conditioner includes oil balancing pipes that extract lubricating oil stored in an oil separator and each of compressors in which a specified amount of the lubricating oil or more is stored, a distributor that distributes the lubricating oil led from the oil separator and the compressors to a plurality of channels, and oil return pipes that communicatively connect the distribution channels of the distributor and a refrigerant inlet pipe of each of the compressors to return the lubricating oil to each of the compressors.

Подробнее
Номер записи: 11
10-01-2013 дата публикации

Heat pump apparatus and operation method for heat pump apparatus

Номер: US20130008194A1
Автор: Toshiro Hattori, Yusuke ISHIZUKI
Принадлежит: Mayekawa Manufacturing Co

This description relates to a heat pump and a method of using the heat pump. The heat pump includes a hydraulic compressor that compresses a heat medium, an oil separation and recovery device that separates oil from the heat medium discharged from the compressor and returns the separated oil to the compressor, a condenser that liquefies the heat medium compressed in the compressor, a decompression device that decompresses the heat medium liquefied in the condenser, and an evaporator that causes the heat medium to absorb heat. The aforementioned devices are connected in series and the heat medium is circulated in those devices. The heat medium can be compressed at a compression ratio, at which a discharge temperature from the compressor becomes 150 to 200° C. An intake temperature control unit which can control the temperature of the heat medium taken into the compressor is on the intake side of the compressor.

Подробнее
Номер записи: 12
21-03-2013 дата публикации

METHOD FOR SELECTING LUBRICANTS FOR HEAT PUMPS

Номер: US20130067938A1
Автор: Seeton Christopher J., Spatz Mark W., THOMAS Raymond H., Wilson David P., Yana Motta Samuel F.
Принадлежит: HONEYWELL INTERNATIONAL INC.

Provided is a method for selecting a lubricant and a refrigerant for use in a vapor-compression refrigeration device such that the combination of the lubricant and refrigerant produces a fluid system having a lubricant-rich phase and a refrigerant-rich phase, yet exhibits miscible-type properties. 1. A method for selecting a refrigerant and lubricant for a vapor-compression refrigeration device system comprising:a. determining a lower operating temperature range of a vapor-compression refrigeration device;b. determining an upper operating temperature range of the vapor-compression refrigeration device; and{'sub': 2', '5, 'c. selecting a refrigerant comprising at least one Cto Cfluoroalkene at a first concentration and selecting a lubricant comprising at least one polyol ester, polyalkylene glycol, or polyalkylene glycol ester at a second concentration to produce a fluid system having a refrigerant-rich phase and a lubricant-rich phase at a first temperature within said lower operating temperature range and at a second temperature within said upper operating temperature range provided that said second temperature is higher than said first temperature, wherein the refrigerant-rich phase is denser relative to the lubricant-rich phase at said first temperature and wherein the lubricant-rich phase is denser relative to the refrigerant-rich phase at said second temperature, provided that the relative difference in densities between the two phases is less than 20% at said first temperature and less than 20% at said second temperature.'}2. The method of wherein said refrigerant-rich phase and said lubricant-rich phase are liquid and are substantially immiscible with each other at said first and second temperatures.3. The method of wherein said refrigerant has a density within a range of about 0.8 g/cmto about 1.2 g/cmwhen measured at a temperature within a range of about 25° C. to about 50° C. and wherein said lubricant has a density within a range of about 0.7 g/cmto about ...

Подробнее
Номер записи: 13
23-05-2013 дата публикации

Compressor-Expander Set Critical Speed Avoidance

Номер: US20130129528A1
Автор: Hoogerwerf David J., Jacobson Wayne, Mirsky Saul
Принадлежит: COMPRESSOR CONTROLS CORPORATION

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

Подробнее
Номер записи: 14
30-05-2013 дата публикации

TURBO CHILLER

Номер: US20130133359A1
Автор: Hasegawa Yasushi, Matsukura Noriyuki, Ueda Kenji
Принадлежит: MITSUBISHI HEAVY INDUSTRIES, LTD.

In a turbo chiller, pipe joint groups ( to ) provided to refrigerant cooling pipe systems ( to ) and lubricant pipe systems connected to a turbo compressor () and a motor (), as well as a joint group () of various replacement components () provided to the pipe systems, are intensively placed, and at least one refrigerant detection sensor () is arranged below the intensive placement region () of the joint groups ( to ) and at a pre-identified point at which a slight amount of refrigerant that leaks from each of the joint groups ( to ) and flows downward is distributed and pools at a high concentration, whereby the slight amount of refrigerant leakage can be detected by the refrigerant detection sensor (). 1. A turbo chiller comprising:a turbo compressor;a motor for driving the turbo compressor;a refrigerant cooling pipe system and a lubricant pipe system connected to the turbo compressor and the motor;pipe joint groups provided to the pipe systems; anda joint group of replacement components provided to the pipe systems,the pipe joint groups and the joint group being intensively placed in an intensive placement region,the turbo chiller further comprising at least one refrigerant detection sensor that is arranged below the intensive placement region and at a pre-identified point at which a slight amount of refrigerant that leaks from each of the joint groups and flows downward is distributed and pools at a high concentration, the slight amount of refrigerant leakage being detectable by the refrigerant detection sensor.2. The turbo chiller according to claim 1 , whereinthe refrigerant cooling pipe system at least includes a refrigerant cooling pipe system that returns a refrigerant extracted from a downstream side of a condenser constituting a refrigeration cycle, to a lower-pressure side than that of the condenser through the motor and an oil cooler.3. The turbo chiller according to claim 1 , whereinthe lubricant pipe system at least includes: a lubricant pipe system ...

Подробнее
Номер записи: 15
11-07-2013 дата публикации

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

Номер: US20130177404A1
Автор: Fabien Gall, Jean Bernardi, Jean-Francois LE COAT, Patrice Bonnefoi, Xavier Durand
Принадлежит: Danfoss Commercial Compressors SA

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

Подробнее
Номер записи: 16
29-08-2013 дата публикации

Tetrafluoropropene compositions and uses thereof

Номер: US20130221262A1
Автор: Barbara Haviland Minor, Donald Bernard Bivens, Thomas Joseph Leck
Принадлежит: EI Du Pont de Nemours and Co

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

Подробнее
Номер записи: 17
26-09-2013 дата публикации

REFRIGERATION SYSTEM

Номер: US20130247603A1
Автор: Margotti Birte, Roelke Stephan
Принадлежит: Bitzer Kuehlmaschinenbau GmbH

In order to improve a refrigeration system comprising a refrigeration circuit, in which a refrigerant compressor, a condenser following on from the refrigerant compressor, an expansion device following on from the condenser and an evaporator following on from the expansion device are arranged, the evaporator being connected to the refrigerant compressor, wherein the refrigerant compressor has a drive motor speed-controlled by an electronic motor control and a control cooling branch which has refrigerant flowing through it, branches off from the refrigeration circuit between the condenser and the expansion device and is guided to a connection of the refrigerant compressor and in which a cooling element is arranged which is connected in a heat conducting manner to electronic power components of the motor control, in such a manner that disruption to the operation of the motor control is avoided as far as possible it is suggested that a regulating device be provided for the control cooling branch and this regulate a temperature of the cooling element during operation of the refrigerant compressor such that a minimum evaporation temperature of the cooling element is above a freezing temperature and below a liquefying temperature of the refrigerant in the evaporator. 1. Refrigeration system comprising a refrigeration circuit , a refrigerant compressor , a condenser following on from the refrigerant compressor , an expansion device following on from the condenser and an evaporator following on from the expansion device being arranged in said circuit , said evaporator being connected to the refrigerant compressor , wherein the refrigerant compressor has a drive motor speed-controlled by an electronic motor control and a control cooling branch having refrigerant flowing through it , branching off from the refrigeration circuit between the condenser and the expansion device and being guided to a connection of the refrigerant compressor , a cooling element connected in a heat ...

Подробнее
Номер записи: 18
03-10-2013 дата публикации

Energy efficiency of air conditioning system by using dual suction compressor

Номер: US20130255290A1
Автор: Alberto Gomes, Guolian Wu, Nihat Cur, Steven Kuehl
Принадлежит: Whirlpool Corp

A method for selectively transferring latent and sensible heat from air in a cooling system of a building structure interior volume that includes at least the steps of: (1) providing a building structure air conditioning system that provides cooling to at least a portion of the interior volume of a building structure and (2) adjusting a ratio of a time coolant flows through the first evaporator to a time coolant flows through the second evaporator such that coolant flows through the first evaporator for more time than the second evaporator when more latent heat is removed from the air and more coolant flows through the second evaporator for more time than the first evaporator when more sensible heat is removed from the air.

Подробнее
Номер записи: 19
03-10-2013 дата публикации

Retrofittable thermal storage for air conditioning systems

Номер: US20130255291A1
Автор: Guolian Wu
Принадлежит: Whirlpool Corp

A system and method to retrofit a building structure having a forced air cooling system with a thermal storage system. The method typically includes the steps of installing a coolant loop that is free of a compressor, and a condenser, where the coolant loop comprises a refrigerant fluid pump and refrigerant fluid conduits that deliver coolant loop refrigerant fluid to a coolant loop evaporator spaced within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway and where the coolant loop is in thermal communication with a thermal energy storage material within a thermal energy thermal storage fluid tank; and activating the coolant loop pump to provide cooling to the coolant loop evaporator thereby cooling air moving in the building air passageway of a building structure.

Подробнее
Номер записи: 20
17-10-2013 дата публикации

HEAT PUMP DEVICE, HEAT PUMP SYSTEM, AND METHOD FOR CONTROLLING INVERTER

Номер: US20130269370A1
Автор: Hatakeyama Kazunori, Kusube Shinsaku, Makino Tsutomu, Matsushita Shinya, Shimomugi Takuya
Принадлежит: Mitsubishi Electric Corporation

An object of the present invention is to maintain a heating amount constant when a compressor is heated at the time of shutdown of the compressor, regardless of the influences of production tolerance and environment variations. An inverter control unit causes an inverter to generate a high-frequency AC voltage having a de-energized section in which a voltage applied from the inverter to a motor is zero between a section in which the voltage is positive and a section in which the voltage is negative. At this time, the inverter control unit detects a value of a current flowing to the inverter in a detection section residing from immediately before a start of the de-energized section to immediately after an end of the de-energized section, and causes the inverter to generate a high-frequency AC voltage adjusted according to the detected current value. 1. A heat pump device comprising:a compressor having a compression mechanism for compressing a refrigerant;a motor that actuates the compression mechanism provided in the compressor;an inverter that applies a predetermined voltage to the motor; andan inverter control unit that causes the inverter to generate a high-frequency AC voltage having a de-energized section in which the voltage applied from the inverter to the motor is zero between a section in which the voltage is positive and a section in which the voltage is negative, a current-value detection unit that detects a value of a current flowing to the inverter; and', 'a high-frequency-voltage generation unit that causes the inverter to generate a high-frequency AC voltage according to a current value detected by the current-value detection unit., 'wherein the inverter control unit includes2. The heat pump device according to claim 1 , wherein the current-value detection unit detects a current flowing from the inverter to the motor in the detection section.3. The heat pump device according to claim 1 , wherein the current-value detection unit detects a DC current ...

Подробнее
Номер записи: 21
27-02-2014 дата публикации

Suction Header Arrangement for Oil Management in Multiple-Compressor Systems

Номер: US20140056725A1
Автор: Bruce A. Fraser, Ronald J. Duppert, Wayne P. Beagle
Принадлежит: Bitzer Kuehlmaschinenbau GmbH and Co KG

A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor.

Подробнее
Номер записи: 22
13-03-2014 дата публикации

TURBO-COMPRESSOR-CONDENSER-EXPANDER

Номер: US20140069138A1
Автор: Geffken Andrew S., Graves Ian E., Roisin Benoit
Принадлежит: Appollo Wind Technologies LLC

An isothermal turbo-compressor-condenser-expander arrangement includes heat-transferring blades that are mounted on, or surround, individual conduits to promote air exchange and heat transfer. In operation, the open framework rotates in free air to promote heat exchange. The assembly includes a first plurality of spokes extending radially outwardly from a first central hub to an outer perimeter with first radial conduits that transport refrigerant under centrifugal force and compression from the hub to the outer perimeter. The first radial conduits include heat exchanging blades. A second plurality of spokes extend radially outwardly from a second central hub that each includes a second thermally-insulated conduit that transports refrigerant from the outer perimeter to the second central hub. Axial conduits extend axially at the outer perimeter. At least some of the axial conduits include an axial blade in thermal communication with the conduit that promotes heat exchange radially. 1. An isothermal turbo-compressor-condenser-expander assembly comprising:a first plurality of spokes extending radially outwardly from a first central hub to an outer perimeter, at least some of the first plurality of spokes each including a first radial conduit that transports refrigerant from the first central hub to the outer perimeter and a radial blade in thermal communication with the first radial conduit that promotes heat exchange radially;a second plurality of spokes extending radially outwardly from a second central hub located at an axial spacing from the first central hub, at least some of the second plurality of spokes each including a second radial conduit that transports refrigerant from the outer perimeter to the second central hub;a plurality of axial conduits extending axially at the outer perimeter between the first plurality of spokes and the second plurality of spokes, and each interconnecting the first radial conduit and the second radial conduit, respectively, to ...

Подробнее
Номер записи: 23
13-03-2014 дата публикации

Compressor assembly with directed suction

Номер: US20140069139A1
Автор: Brian L. REID, Eric P. Cavender, Kevin J. Gehret, Matthew Thomas PISCOPO, Michael M. Perevozchikov, Roy J. Doepker, Stephen Barry TUMMINO
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell assembly, a compression mechanism and a conduit. The shell assembly may include a fitting through which fluid is received from outside of the compressor. The compression mechanism may be disposed within a chamber defined by the shell assembly. The conduit may extend through the chamber between the fitting and a suction inlet of the compression mechanism and transmit at least a portion of the fluid from the fitting to the suction inlet. The conduit may include an inlet that may be spaced apart from the fitting and an outlet that may engage the compression mechanism.

Подробнее
Номер записи: 24
20-03-2014 дата публикации

Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons

Номер: US20140077124A1
Автор: Gary M. Knopeck, Hang T. Pham, Rajiv R. Singh
Принадлежит: Honeywell International Inc

Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.

Подробнее
Номер записи: 25
01-01-2015 дата публикации

Air conditioner

Номер: US20150000330A1
Автор: Byung Han Lim, Dong Suk Kim, Ha Na Kim, Jin Woo Hong, Jong Yeop Baek, Jung Ho Kim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A refrigerating apparatus including a refrigerant circuit forming a refrigeration cycle using an operating refrigerant selected from among R1234yf single refrigerant, R1234yf mixed refrigerant, R1234ze single refrigerant, and R1234ze mixed refrigerant. The refrigerant circuit has a compressor using refrigeration oil including an extreme pressure additive. An environmentally friendly refrigerant is used and an air conditioner exhibiting high cooling efficiency is provided.

Подробнее
Номер записи: 26
04-01-2018 дата публикации

COMPRESSOR LOW COST OIL FILTER

Номер: US20180001246A1
Автор: PRICE Daniel Lee
Принадлежит:

An internal oil filter is installed at least partially inside a crankcase and/or an oil sump of a compressor. The internal oil filter can receive oil from an oil pressure regulator and filter the oil via filter media. The received oil radially penetrates through the filter media and flow directly into the oil sump from an outside surface of the filter media. This can eliminate the need of fluid lines connecting an outlet of an oil filter to the oil sump and any sealing mechanism therebetween. 1. A transport refrigeration system (TRS) compressor , the compressor comprising:a crankcase;a crankshaft;an oil filter including a filter media, the crankshaft and the oil filter disposed within the crankcase;an oil pump configured to pump oil to the crankshaft and the oil filter;an oil sump configured store oil received from the crankshaft and the oil filter; anda pressure regulator in fluid communication with the oil pump and the oil filter, the pressure regulator configured to regulate an oil pressure of oil directed from the oil pump to the oil filter,wherein the oil filter is disposed downstream of the pressure regulator and the oil sump is disposed downstream of the oil filter so that a first portion of oil flows from the oil pump to the pressure regulator, then to the oil filter, and then to the oil sump, andwherein the oil filter is an inside-out filter that is absent of a housing, the oil filter includes a filter media, and oil received from the pressure regulator penetrates through the filter media and flows into the oil sump from an outside surface of the filter media.2. (canceled)3. The TRS compressor of claim 1 , wherein the TRS compressor is configured to achieve between about 10 to about 50 cubic inches of displacement per revolution.4. The TRS compressor of claim 1 , wherein the TRS compressor is configured to achieve about 30 cubic inches of displacement per revolution.5. The TRS compressor of claim 1 , wherein the oil filter includes a bypass valve having an ...

Подробнее
Номер записи: 27
04-01-2018 дата публикации

SYSTEM AND METHOD OF CONTROLLING COMPRESSOR, EVAPORATOR FAN, AND CONDENSER FAN SPEEDS DURING A BATTERY MODE OF A REFRIGERATION SYSTEM FOR A CONTAINER OF A VEHICLE

Номер: US20180001739A1
Автор: ROZSNAKI Joseph J., VEHR Shawn W.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A system is provided that includes mode and battery modules. The mode module, based on parameters, determines whether to operate in a shore power, engine or battery mode. One or more batteries are charged based on received utility power while in the shore power mode. The batteries, while in the engine mode, are charged based on power received from a power source. The battery module, while operating in the battery mode, determines a speed based on a temperature within a temperature controlled container of a vehicle and a state of charge of the batteries. The compressor is run at the speed while in the battery mode. While in the battery mode, the batteries are not being charged based on power from a shore power source and the power source from which power is received during the engine mode. 1. A system comprising:a mode module configured to, based on a plurality of parameters, determine whether to operate in a shore power mode, an engine mode, or a battery mode, wherein one or more batteries are charged based on received utility power while in the shore power mode, and wherein the one or more batteries, while in the engine mode, are charged based on power received from an alternator or a generator; and determine a first speed based on (i) a temperature within a temperature controlled container of a vehicle, and (ii) a state of charge of the one or more batteries, and', 'run a compressor at the first speed,', 'wherein, while in the battery mode, the one or more batteries are not being charged based on power from (i) a shore power source, and (ii) the alternator or the generator from which power is received during the engine mode., 'a battery module configured to, while operating in the battery mode,'}2. The system claim 1 , of claim 1 , wherein while operating in at least one of the shore power mode claim 1 , the engine mode or the battery mode the power is received from the solar panel.3. The system of claim 1 , wherein:the battery module is configured to, while ...

Подробнее
Номер записи: 28
05-01-2017 дата публикации

WORKING FLUID FOR HEAT CYCLE, COMPOSITION FOR HEAT CYCLE SYSTEM, AND HEAT CYCLE SYSTEM

Номер: US20170002245A1
Автор: FUKUSHIMA Masato
Принадлежит: Asahi Glass Company, Limited

To provide a working fluid for heat cycle, which has less influence over global warming, which has a small temperature glide, which has a sufficiently low discharge temperature and which is excellent in the cycle performance (refrigerating capacity and coefficient of performance), a composition for a heat cycle system, and a heat cycle system. A working fluid for heat cycle, which contains trifluoroethylene and 1,2-difluoroethylene, a composition for a heat cycle system, and a heat cycle system employing the composition. In the working fluid for heat cycle, the proportion of the total amount of trifluoroethylene and 1,2-difluoroethylene is preferably at least 20 mass % and at most 100 mass %. 1. A working fluid for heat cycle , which contains trifluoroethylene and 1 ,2-difluoroethylene.2. The working fluid for heat cycle according to claim 1 , wherein the proportion of the total amount of trifluoroethylene and 1 claim 1 ,2-difluoroethylene based on the entire amount of the working fluid for heat cycle is at least 20 mass % and at most 100 mass %.3. The working fluid for heat cycle according to claim 1 , wherein the proportion of trifluoroethylene based on the entire amount of the working fluid for heat cycle is at least 57 mass % and at most 90 mass %.4. The working fluid for heat cycle according to claim 1 , wherein the proportion of 1 claim 1 ,2-difluoroethylene based on the entire amount of the working fluid for heat cycle is at most 43 mass %.5. The working fluid for heat cycle according to claim 1 , wherein the proportion of 1 claim 1 ,2-difluoroethylene based on the entire amount of the working fluid for heat cycle is at least 10 mass %.6. The working fluid for heat cycle according to claim 1 , which further contains difluoromethane.7. The working fluid for heat cycle according to claim 6 , wherein the proportion of difluoromethane based on the entire amount of the working fluid for heat cycle is at least 10 mass % and at most 60 mass %.8. The working fluid ...

Подробнее
Номер записи: 29
05-01-2017 дата публикации

Rotary compressor

Номер: US20170003057A1
Автор: Junya Tanaka, Kenji Komine, Kenshi Ueda, Shuhei HOSHINO
Принадлежит: Fujitsu General Ltd

A rotary compressor includes a sealed vertical compressor housing, a compressing unit, and a motor. A refrigerant discharging unit is provided at an upper part and a refrigerant intake unit is provided at a lower part side surface in the sealed vertical compressor housing. The compressing unit is disposed on the lower part of the compressor housing, includes an annular cylinder, an end plate including a bearing unit and a discharge valve unit and blocking end portions of the cylinder, an annular piston that engages with an eccentric portion of a rotation axis supported by the bearing unit, revolves along a cylinder inner wall of the cylinder in the cylinder, and forms a cylinder chamber between the cylinder inner wall and the annular piston, and a vane. The motor is disposed on the upper part of the compressor housing, and drives the compressing unit via the rotation axis.

Подробнее
Номер записи: 30
07-01-2016 дата публикации

Oil management for heating ventilation and air conditioning system

Номер: US20160003511A1
Автор: Jack Leon Esformes, Marcel CHRISTIANS, Satyam Bendapudi
Принадлежит: Carrier Corp

A method of lubricant management in a heating ventilation and air conditioning (HVAC) system includes flowing a volume of a compressor lubricant and refrigerant mixture from an evaporator into a lubricant still and stopping the flow of the compressor lubricant and refrigerant mixture into the lubricant still when the mixture fills the lubricant still to a selected level. Compressor lubricant is distilled from the mixture via a thermal energy exchange, and the distillation is stopped when a concentration of compressor lubricant in the lubricant still exceeds a predetermined concentration level. The distillate is urged from the lubricant still.

Подробнее
Номер записи: 31
04-01-2018 дата публикации

AIR CONDITIONING DEVICE

Номер: US20180003419A1
Автор: MINAMI Junya, OHURA Ryuuta, OKA Yuusuke
Принадлежит: DAIKIN INDUSTRIES, LTD.

A multi-type air conditioning device controls an evaporation temperature and a condensing temperature, depending on required capacity of an indoor unit. The air conditioning device compares a current evaporation temperature or condensing temperature with a reference value, of an evaporation temperature or an condensing temperature, corresponding to a lower limit flow rate, of a gaseous refrigerant, required for refrigerating machine oil not to accumulate in, but to flow through, the gas branch pipes, and calculates an amount of the refrigerating machine oil accumulated in a gas branch pipe which does not satisfy the lower limit flow rate. When the calculated amount exceeds a set amount, the air conditioning device performs oil collecting operation, and controls the oil collecting operation in view of a flow rate of a gaseous refrigerant in gas branch pipes. 1. An air conditioning device which includes:a refrigerant circuit including an outdoor unit and indoor units connected to each other via an interconnecting pipe; and an operation controller controlling operation of the refrigerant circuit,the interconnecting pipe including: a liquid main pipe connected to the outdoor unit, and liquid branch pipes branching off from the liquid main pipe and each connected to a corresponding one of the indoor units; and a gas main pipe connected to the outdoor unit, and gas branch pipes branching off from the gas main pipe and each connected to a corresponding one of the indoor units, andthe controller including an air-conditioning capacity controller determining a target value of an evaporation temperature or a condensing temperature of the refrigerant circuit, depending on air-conditioning load in a room, and, based on the target value, controlling operational capacity of the compressor in the refrigerant circuit, whereinthe operation controller includes an oil collection controller calculating an amount of refrigerating machine oil accumulated in the interconnecting pipe during ...

Подробнее
Номер записи: 32
04-01-2018 дата публикации

Refrigerant Compressor System

Номер: US20180003422A1
Автор: Andreas Schulaks
Принадлежит: Bitzer Kuehlmaschinenbau GmbH and Co KG

In order to improve the operational reliability of a refrigerant compressor system that includes a first refrigerant line that conducts expanded refrigerant, a second refrigerant line that conducts compressed refrigerant, at least one refrigerant compressor that is arranged between the first and the second refrigerant line and is driven by a motor, and a control unit for operating the refrigerant compressor system, it is proposed that the control unit should have a first central processing unit and at least one input/output unit for control variables that communicates with the first central processing unit, and that there should be associated with the first central processing unit a second central processing unit which, in the event of a failure of the first central processing unit, takes over the control functions for the purpose of controlling the refrigerant compressor system.

Подробнее
Номер записи: 33
02-01-2020 дата публикации

OIL DISTRIBUTING DEVICE AND REFRIGERATION SYSTEM HAVING THE OIL DISTRIBUTING DEVICE

Номер: US20200003464A1
Автор: Dong Ying, Fan Liang
Принадлежит:

An oil distributing device and a refrigeration system having the oil distributing device are disclosed. The oil distributing device is connected among at least three compressors and is configured to distribute oil among the at least three compressors. The oil distributing device includes: a first joint assembly including a plurality of passages fluidly isolated from each other; a plurality of second joint assemblies; and a plurality of connecting pipes respectively connecting the plurality of second joint assemblies to the plurality of passages of the first joint assembly in one-to-one correspondence. For example, the oil distributing device and the refrigeration system according to the embodiments of the present invention can achieve a better oil balance control. 1. An oil distributing device connected among at least three compressors and configured to distribute oil among the at least three compressors , the oil distributing device comprising:a first joint assembly comprising a plurality of passages fluidly isolated from each other;a plurality of second joint assemblies; anda plurality of connecting pipes respectively connecting the plurality of second joint assemblies to the plurality of passages of the first joint assembly in one-to-one correspondence.2. The oil distributing device of claim 1 , wherein:the first joint assembly comprises a first tubular member and a second tubular member surrounding the first tubular member, an annular space between the first tubular member and the second tubular member serves as a first one of the plurality of passages of the first joint assembly, and an internal cavity of the first tubular member serves as a second one of the plurality of passages of the first joint assembly.3. The oil distributing device of claim 2 , wherein:the annular space is in fluid communication with a first one of the plurality of connecting pipes through a T joint, and the first tubular member is connected directly to a second one of the plurality of ...

Подробнее
Номер записи: 34
07-01-2021 дата публикации

REFRIGERATION SYSTEM

Номер: US20210003321A1
Автор: Becker Andreas, Friedrich Axel
Принадлежит: Bitzer Kuehlmaschinenbau GmbH

A refrigeration system, in particular a transport refrigeration system, comprising: a refrigerant circuit, which in particular works using COas the refrigerant and in which there is guided a total mass flow of the refrigerant; a high-pressure-side heat exchanger arranged in the refrigerant circuit and cooling refrigerant compressed to a high pressure; at least one cooling stage which expands the principal mass flow from the intermediate-pressure collector to a low pressure in at least one cooling expansion member and in so doing makes refrigeration capacity available at a low-pressure-side heat exchanger; and a refrigerant compressor unit which compresses the principal mass flow from a low pressure to a high pressure, wherein the refrigerant compressor unit has a first compressor stage for compressing, to a medium pressure, the refrigerant of the principal mass flow supplied at low pressure, and a second compressor stage for compressing, to a high pressure, the refrigerant of the principal mass flow that has been compressed to a medium pressure. 1. A refrigeration system , in particular a transport refrigeration system , comprising: a refrigerant circuit , which in particular works using COas the refrigerant and in which there is guided a total mass flow of the refrigerant; a high-pressure-side heat exchanger arranged in the refrigerant circuit and cooling refrigerant compressed to a high pressure; an expansion member , which is arranged in the refrigerant circuit following on from the high-pressure-side heat exchanger and in the active state cools the total mass flow of the refrigerant by expansion and in so doing generates a principal mass flow of liquid refrigerant and an auxiliary mass flow of gaseous refrigerant , which enter an intermediate-pressure collector and are separated therein into the principal mass flow and the auxiliary mass flow; at least one cooling stage which expands the principal mass flow from the intermediate-pressure collector to a low ...

Подробнее
Номер записи: 35
03-01-2019 дата публикации

MOTOR FOR USE IN REFRIGERANT ENVIRONMENT

Номер: US20190003753A9
Автор: Kielgas Bruce William, Lange Martin Thomas
Принадлежит:

A motor for use in a refrigerant atmosphere includes a rotor configured to rotate about an axis and a stator adjacent the rotor. The stator includes a core defining an end, and a plurality of teeth defining a plurality of slots. A plurality of coils are wrapped around the plurality of teeth such that each coil of the plurality of coils comprises a pair of slot portions extending at least partially through adjacent slots of the plurality of slots and an end turn extending between the slot portions and at least partially across the end. A shell encapsulates the end of the stator such that the end turns of said plurality of coils are substantially sealed from the refrigerant atmosphere. 1. A motor for use in a refrigerant atmosphere , the motor comprising:a rotor configured to rotate about an axis; a core defining an end;', 'a plurality of teeth defining a plurality of slots; and', 'a plurality of coils wrapped around said plurality of teeth such that each coil of said plurality of coils comprises a pair of slot portions extending at least partially through adjacent slots of said plurality of slots and an end turn extending between said slot portions and at least partially across said end; and, 'a stator adjacent said rotor, said stator comprisinga shell encapsulating said end of said stator such that said end turns of said plurality of coils are substantially sealed from the refrigerant atmosphere.2. The motor in accordance with claim 1 , wherein said shell comprises an epoxy.3. The motor in accordance with claim 2 , wherein said epoxy bonds to said end turns of said plurality of coils.4. The motor in accordance with claim 1 , wherein said shell is substantially free of apertures.5. The motor in accordance with claim 1 , wherein said shell has an average thickness in a range from about 4 millimeters (mm) to about 10 mm.6. The motor in accordance with claim 1 , wherein said shell is opaque.7. The motor in accordance with claim 1 , wherein said end comprises a first end ...

Подробнее
Номер записи: 36
13-01-2022 дата публикации

LOW ENERGY CONSUMPTION REFRIGERATION SYSTEM WITH A ROTARY PRESSURE EXCHANGER REPLACING THE BULK FLOW COMPRESSOR AND THE HIGH PRESSURE EXPANSION VALVE

Номер: US20220011023A1
Автор: Pattom Matthew Joseph, Thatte Azam Mihir
Принадлежит:

A refrigeration system includes a rotary pressure exchanger fluidly coupled to a low pressure loop and a high pressure loop. The rotary pressure exchanger replaces a traditional bulk flow compressor. The rotary pressure exchanger is configured to receive the refrigerant at high pressure from the high pressure loop, to receive the refrigerant at low pressure from the low pressure loop, and to exchange pressure between the refrigerant at high pressure and the refrigerant at low pressure, and wherein a first exiting stream from the rotary pressure exchanger includes the refrigerant at high pressure in the supercritical state or the subcritical state and a second exiting stream from the rotary pressure exchanger includes the refrigerant at low pressure in the liquid state or the two-phase mixture of liquid and vapor. 1. A refrigeration system comprising:a high pressure loop for circulating a refrigerant at a high pressure through it;a gas cooler or a condenser disposed along the high pressure loop, wherein the high pressure loop is configured to reject heat to the surroundings from the refrigerant at high pressure via the gas cooler or the condenser, and the refrigerant at high pressure is in a supercritical state or subcritical state;a second low pressure loop for circulating the refrigerant at a low pressure through it;an evaporator disposed along the low pressure loop, wherein the low pressure loop is configured to absorb heat from the surroundings into the refrigerant at low pressure via the evaporator, and the refrigerant at low pressure is in a liquid state, a vapor state, or a two-phase mixture of liquid and vapor;a rotary pressure exchanger fluidly coupled to the low pressure loop and the high pressure loop, wherein the rotary pressure exchanger is configured to receive the refrigerant at high pressure from the high pressure loop, to receive the refrigerant at low pressure from the low pressure loop, and to exchange pressure between the refrigerant at high ...

Подробнее
Номер записи: 37
13-01-2022 дата публикации

ELECTRIC MOTOR SYSTEM

Номер: US20220014124A1
Автор: Hibino Hiroshi, IRINO Yusuke, ONO Takaaki
Принадлежит:

An electric motor system includes a drive shaft, a first electric motor, a second electric motor, a first inverter, a second inverter and a control unit. The drive shaft is rotatable around an axis. The first electric motor and the second electric motor rotate the drive shaft. The first inverter supplies power in order to generate a torque to the first electric motor. The second inverter supplies power in order to generate a torque to the second electric motor. The control unit controls the first inverter and the second inverter. The controller is configured to be able to change a ratio between an output torque of the first electric motor and an output torque of the second electric motor. 1. An electric motor system comprising:a drive shaft rotatable around an axis;a first electric motor and a second electric motor each configured to rotate the drive shaft;a first inverter configured to supply power in order to generate a torque to the first electric motor;a second inverter configured to supply power in order to generate a torque to the second electric motor; and an output torque of the first electric motor and', 'an output torque of the second electric motor., 'a control unit configured to control the first inverter and the second inverter, the controller being configured to be able to change a ratio between'}2. The electric motor system according to claim 1 , whereinthe control unit is configured to perform a partial suspension operation in order to suspend a power conversion operation of the first inverter or the second inverter.3. The electric motor system according to claim 1 , whereina carrier frequency of the first inverter and a carrier frequency of the second inverter are different from each other.4. The electric motor system according to claim 1 , whereinone of the first and second electric motors is more efficient than an other of the first and second electric motors in a relatively low rotational speed range, and the other of the first and second ...

Подробнее
Номер записи: 38
07-01-2021 дата публикации

MOTOR AND COMPRESSOR INCLUDING THE SAME

Номер: US20210006103A1
Автор: CHO Jinwoo, KIM Hongseok, LEE Ui-Yoon, Park Jae-Woo
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Disclosed is a compressor including a housing, and a motor including a stator to be interference fitted into and fixed to an inner circumferential surface of the housing and a rotor rotatable inside the stator. The stator includes an annular back yoke disposed inside the housing, a plurality of teeth extending radially inward from the back yoke, and a coil wound on the plurality of teeth. The back yoke includes a deformation portion compressed and deformed by the housing while the stator is interference fitted into the inner circumferential surface of the housing, a contact portion which protrudes radially outward from the deformation portion and being in contact with the housing, and a cavity formed on a radial inner side of the deformation portion into which which the deformation portion is deformed. 1. A compressor comprising:a housing; and a stator configured to be interference fitted into and fixed to an inner circumferential surface of the housing, the stator including an annular back yoke, a plurality of teeth extending radially inward from the annular back yoke, and a coil wound on the plurality of teeth, and', 'a rotor configured to be rotatable inside the stator,, 'a motor including a deformation portion compressed and deformed by the housing while the stator is interference fitted into the inner circumferential surface of the housing;', 'a contact portion which protrudes radially outward from the deformation portion and being in contact with the housing; and', 'a cavity formed on a radial inner side of the deformation portion into which the deformation portion is deformed., 'wherein the annular back yoke comprises2. The compressor according to claim 1 , whereinthe deformation portion comprises a cantilever, andthe contact portion is formed on an end of the cantilever.3. The compressor according to claim 2 , whereinthe annular back yoke comprises one of the deformation portion, one of the contact portion, and one of the cavity, for each of the plurality of ...

Подробнее
Номер записи: 39
03-01-2019 дата публикации

ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATION AND AIR CONDITIONING APPARATUS

Номер: US20190006896A1
Автор: Baba Kazuhiko, Ishikawa Atsushi, NIGO Masahiro, Tsuchida Kazuchika
Принадлежит:

In an electric motor, a first magnet and a second magnet are accommodated in magnet accommodating apertures of a rotor core. On outer circumferential core portions that exist on a radially outer side of the magnet accommodating apertures, two slits as a pair of first slits, and two slits that are respectively adjacent to each of the first slits are disposed circumferentially outside the pair of first slits as a pair of second slits. The outer circumferential core portions include: a first magnetic portion that exists between the pair of first slits; and a pair of second magnetic portions that respectively exist between the first slits and the second slits. An inter-magnet space portion that exists between the first magnet and the second magnet is positioned within a range of the first magnetic portion in the circumferential direction of the rotor. 1. An electric motor comprising:a stator; anda rotor that is disposed radially inside the stator, and that is rotatable relative to the stator,wherein: a rotor core; and', 'a plurality of permanent magnets that are disposed on the rotor core;, 'the rotor comprisesmagnet accommodating apertures that are equal in number to a number of magnetic poles in the rotor are disposed on the rotor core so as to be spaced apart from each other in a circumferential direction of the rotor;two of the permanent magnets are accommodated as a first magnet and a second magnet in each of the magnet accommodating apertures;the first magnet and the second magnet that are accommodated in the shared magnet accommodating apertures are disposed so as to be separated from each other in the circumferential direction of the rotor;the rotor core comprises a plurality of outer circumferential core portions that respectively exist on a radially outer side of each of the magnet accommodating apertures;on each of the outer circumferential core portions, two slits that are adjacent to each other in the circumferential direction of the rotor are disposed at a ...

Подробнее
Номер записи: 40
03-01-2019 дата публикации

HARMONIC SHUNTING ELECTRIC MOTOR WITH FACETED SHAFT FOR IMPROVED TORQUE TRANSMISSION

Номер: US20190006916A1
Автор: Abbott Russell T., Peterson Charles J.
Принадлежит: TRANE INTERNATIONAL INC.

Disclosed are an electric motor and a simplified variable speed drive system which renders the use of filtering components in a motor drive circuit unnecessary and increases torque transfer from permanent magnets of the rotor to the output shaft. The motor includes a fluid gap between the rotor and the stator configured to receive a cooling fluid, such a refrigerant. A plurality of radially-abutting, bread loaf-shaped magnets having a flat base are respectively fixed to a plurality of longitudinally oriented mounting facets provided on the shaft to provide maximum torque transfer from the magnets to the shaft. An eddy shield disposed between the faceted shaft and the magnets thermally shunts high frequency harmonics from the magnets to the shaft and cooling fluid. The rotor components are mechanically secured by a sleeve disposed around the rotor. 1. A hermetic AC electric motor comprising harmonics shunting such that high frequency harmonics can be shunted from the AC electric motor without the use of one or more filters , comprising:a stator; a shaft;', 'a plurality of longitudinal facets defined on the shaft;', 'an eddy current shield disposed around the longitudinal facets; and', 'a rotor element disposed on a longitudinal facet., 'a rotor disposed within the stator and in selective magnetic communication with the stator, wherein a fluid gap exists between the rotor and the stator, wherein the fluid gap is configured to receive a cooling fluid, comprising2. The motor in accordance with claim 1 , wherein the rotor element is selected from the group consisting of a magnet and a spacer.3. The motor in accordance with claim 2 , wherein the magnet is a permanent magnet.4. The motor in accordance with claim 2 , wherein the spacer formed from non-magnetic material.5. The motor in accordance with claim 1 , wherein the rotor element comprises:a flat base surface dimensioned to mate with a longitudinal facet of the shaft; anda curved top surface.6. The motor in accordance ...

Подробнее
Номер записи: 41
12-01-2017 дата публикации

SEALED COMPRESSOR AND REFRIGERATION DEVICE

Номер: US20170009758A1
Автор: INAGAKI Ko, KOBAYASHI Masanori
Принадлежит:

A sealed compressor includes sealed container that contains electric element, and compression element driven by electric element. Compression element includes shaft that includes main shaft portion, and eccentric shaft portion integrally movable with main shaft portion, and bearing portion that supports main shaft portion of shaft to constitute a cantilever bearing. Compression element further includes cylinder that compresses gas, piston reciprocatively inserted into cylinder, and connecting rod that connects eccentric shaft portion with piston. 1. A sealed compressor comprising a sealed container that contains an electric element , and a compression element driven by the electric element , wherein a shaft that includes a main shaft portion, and an eccentric shaft portion integrally movable with the main shaft portion,', 'a bearing portion that supports the main shaft portion of the shaft to constitute a cantilever bearing,', 'a cylinder that compresses gas,', 'a piston reciprocatively inserted into the cylinder, and', 'a connecting rod that connects the eccentric shaft portion with the piston,, 'the compression element includes{'b': 1', '1, 'claim-text': {'br': None, 'i': a', '+c, '1=π/21\u2003\u2003(1), and'}, 'an angle a formed by a first center line indicating a shaft center of the bearing portion, and a second center line indicating a shaft center of the cylinder, and an absolute value c of an angle of a tilt of the shaft with respect to the bearing portion satisfy equation (1) a seal portion producing a clearance from an inner circumferential surface of the cylinder, and forming a sliding surface,', 'an extension portion disposed in a rear of the seal portion, and forming a sliding surface, and', 'a non-sliding portion disposed in the rear of the seal portion, and not forming a sliding surface., 'an outer circumferential surface of the piston includes2. The sealed compressor according to claim 1 , wherein the extension portion has a radius same as a radius of ...

Подробнее
Номер записи: 42
12-01-2017 дата публикации

Compressor Operation Management In Air Conditioners

Номер: US20170010032A1
Автор: Anuradha Sundararajan, H. Gene Havard, Jr., Mark Olsen, Rakesh Goel
Принадлежит: Lennox Industries Inc

In various implementations, compressor operation in an air conditioner may be managed by maintaining oil viscosity, a temperature differential, compressor sump temperature, and/or suction pressure. Properties of the air conditioner or portions thereof, such as the compressor, may be determined. To manage compressor operations, operation(s) of the air conditioner may be adjusted based on one or more of the determined properties.

Подробнее
Номер записи: 43
10-01-2019 дата публикации

MULTI-COMPRESSOR CLIMATE SYSTEM

Номер: US20190009648A1
Автор: Connell Brett S., Herrmann Brett, Sullivan Aaron D., Zeigler Terry
Принадлежит:

Disclosed are climate systems and methods for control the climate systems. A climate system includes a plurality of compressors, a first heat exchanger disposed downstream of the compressors and a second heat exchanger disposed downstream of the first heat exchanger. The compressors and heat exchangers are fluidly connected by refrigerant lines to form a refrigerant circuit. The climate system also includes a controller that controls the operation of the compressors to draw back lubricant to the compressors without use of an oil equalization system. 1. A climate system for conditioning air within a compartment of a vehicle , comprising:a first compressor that includes a first oil sump;a second compressor that includes a second oil sump, independent of the first oil sump;a first refrigerant-to-air heat exchanger fluidly coupled to the first and second compressors and thermally coupled to an exterior of the vehicle;a second refrigerant-to-air heat exchanger fluidly coupled to the first refrigerant-to-air heat exchanger and thermally coupled to the compartment of the vehicle;refrigerant lines fluidly connecting the first and second compressors and the first and second heat exchangers to form a refrigerant circuit; anda controller communicatively coupled to the first and second compressors and including instructions that are configured to selectively draw back compressor oil from the refrigerant lines to at least one of the first and second oil sumps by adjusting an operating speed of at least one of the first and second compressors.2. The climate system of claim 1 , wherein the controller is configured to:draw oil back to the first oil sump by lowering a speed of the first compressor for a first time period; anddraw oil back to the second oil sump by lowering a speed of the second compressor for a second time period.3. The climate system of claim 1 , wherein the first oil sump and the second oil sump are not connected by an oil equalizing system.4. The climate system ...

Подробнее
Номер записи: 44
27-01-2022 дата публикации

IN-SITU OIL CIRCULATION RATIO MEASUREMENT SYSTEM FOR VAPOR COMPRESSION CYCLE SYSTEMS

Номер: US20220026121A1
Автор: Braun James Edward, Groll Eckhard Achim, Horton William Travis, Kurtulus Orkan, Shah Vatsal
Принадлежит: PURDUE RESEARCH FOUNDATION

A system for measuring oil circulation ratio in a vapor-compression refrigeration system (VCRS) is provided. The system may include an oil separator configured to receive the refrigerant and oil flow from the low-pressure line of the VCRS and output a oil flow and a refrigerant flow. The system may further include an oil collector configured to receive the separated oil flow provided by the oil separator. A valve may control an oil flow from the oil collector to the low-pressure line. A level sensor may measure oil level in the oil collector. The system may close, in response to the oil being at or less than a first level, the valve to collect oil in the oil collector. The system may open, in response to the oil being at or greater than a second level, the valve to release oil from the oil collector to the low-pressure line. 1. A system , the system comprising:an oil separator configured to receive the refrigerant and oil flow from the low-pressure line of the VCRS and output a oil flow and a refrigerant flow;an oil collector configured to receive the separated oil flow provided by the oil separator;a valve configured to control an oil flow from the oil collector to the low-pressure line;a level sensor configured to measure oil level in the oil collector; and close, in response to the oil being at or less than a first level, the valve to collect oil in the oil collector; and', 'open, in response to the oil being at or greater than a second level, the valve to release oil from the oil collector to the low-pressure line., 'a processor, the processor configured to2. The system of claim 1 , wherein the processor is further configured to:measure an amount of oil in the accumulator at the first level of the oil collector;measure an amount of oil in the accumulator at the second level of the oil collector;generate an oil cycle rate for the VCRS measurement and the second oil level measurement; andoutput the oil cycle rate.3. The system of claim 2 , wherein to output the ...

Подробнее
Номер записи: 45
27-01-2022 дата публикации

SYSTEM AND METHOD FOR OCR CONTROL IN PARALLELED COMPRESSORS

Номер: US20220026122A1
Автор: OUYANG Jun, Zhang Long
Принадлежит:

A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a first compressor having a first capacity, a second compressor having a second capacity, a condenser, an expansion device, and an evaporator fluidly connected. The first compressor and the second compressor are arranged in parallel. The first compressor includes a first lubricant sump. The second compressor includes a second lubricant sump. The first lubricant sump is fluidly connected to the second lubricant sump via a lubricant transfer conduit. A flow restrictor is disposed in the lubricant transfer conduit. The flow restrictor is configured to reduce a refrigerant flow between the first compressor and the second compressor. 115-. (canceled)16. A flow restrictor used in a heating , ventilation , air conditioning , and refrigeration (HVACR) system that has a first compressor having a first capacity , a second compressor having a second capacity , a condenser , an expander , and an evaporator fluidly connected; the first compressor and the second compressor being arranged in parallel; the first compressor including a first lubricant sump , and the second compressor including a second lubricant sump; the first lubricant sump being fluidly connected to the second lubricant sump via a lubricant transfer conduit; the flow restrictor being disposed in the lubricant transfer conduit and around a middle of the lubricant transfer conduit; the flow restrictor being configured to reduce a refrigerant flow between the first compressor and the second compressor; the flow restrictor comprising:openings including a first opening and a second opening; andblocking areas;wherein the flow restrictor includes a top portion having the first opening, a middle portion, and a bottom portion having the second opening; andwherein an area ratio of the openings to areas including the blocking areas and the openings is configured to generate resistance to control the refrigerant flow, so that an upward ...

Подробнее
Номер записи: 46
10-01-2019 дата публикации

SEALING MATERIAL

Номер: US20190010082A1
Автор: Hirose Masayuki, NISHIKAWA Yoshikatsu
Принадлежит: NIPPON ELECTRIC GLASS CO., LTD.

A sealing material of the present invention is a sealing material for sealing a metal material, including 70 mass % to 100 mass % of glass powder including alkali silicate glass and 0 mass % to 30 mass % of ceramic powder, and having a linear thermal expansion coefficient in a temperature range of from 30° C. to 380° C. of more than 100×10/° C. and 170×10/° C. or less. 1. A sealing material for sealing a metal material , comprising 70 mass % to 100 mass % of glass powder comprising alkali silicate glass and 0 mass % to 30 mass % of ceramic powder , and having a linear thermal expansion coefficient in a temperature range of from 30° C. to 380° C. of more than 100×10/° C. and 170×10/° C. or less.2. The sealing material according to claim 1 ,wherein the glass powder comprises high-expansion glass powder, and{'sub': 2', '2', '3', '2', '3', '2', '2', '2, 'wherein the high-expansion glass powder comprises as a glass composition, in terms of mol %, 55% to 75% of SiO, 0% to 10% of BO, 1% to 12% of AlO, 17% to 28% of LiO+NaO+KO, and 0% to 15% of MgO+CaO+SrO+BaO.'}3. The sealing material according to claim 2 , wherein the glass powder comprises the high-expansion glass powder and low-expansion glass powder.4. The sealing material according to claim 1 ,wherein the sealing material comprises 70 mass % to 99 mass % of the glass powder and 1 mass % to 30 mass % of the ceramic powder, andwherein the glass powder comprises low-expansion glass powder, and the ceramic powder comprises high-expansion ceramic powder.5. The sealing material according to claim 4 , wherein the high-expansion ceramic powder comprises any one of cristobalite claim 4 , tridymite claim 4 , and calcium fluoride.6. The sealing material according to claim 1 , wherein the sealing material has a granular form.7. The sealing material according to claim 1 , wherein the sealing material comprises a sintered compact.8. The sealing material according to claim 1 , wherein the sealing material is used for sealing a ...

Подробнее
Номер записи: 47
14-01-2016 дата публикации

Expendable driven heat pump cycles

Номер: US20160010902A1
Автор: Michael J. Andres
Принадлежит: Hamilton Sundstrand Corp

A cooling system with a compression cooling cycle for a working fluid that passes an expendable fluid through a warm side heat exchanger for the cooling system to cause the expendable fluid to vaporize and thus absorb heat from the working fluid by way of latent heat or enthalpy of vaporization and then running the vaporized expendable through a turbine that drives a compressor for the cooling system.

Подробнее
Номер записи: 48
14-01-2016 дата публикации

Refrigeration System with Full Oil Recovery

Номер: US20160010907A1
Автор: Masood Ali
Принадлежит: Heatcraft Refrigeration Products LLC

The present application provides a refrigeration system with full oil recovery for removing oil from a flow of a refrigerant. The refrigeration system may include a compressor, an oil separator positioned downstream of the compressor to remove most of the oil from the flow of the refrigerant, a condenser positioned downstream of the oil separator, and a receiver positioned downstream of the condenser. The receiver may include a barrier to separate the oil on a first side from the refrigerant on a second side.

Подробнее
Номер записи: 49
11-01-2018 дата публикации

Refrigeration System with Separate Feedstreams to Multiple Evaporator Zones

Номер: US20180010830A1
Автор: Scherer John
Принадлежит:

A refrigeration system has: (a) a fluid tight circulation loop including a compressor, a condenser and an evaporator, the evaporator having at least three evaporator zones, each evaporator zone having an inlet port, the circulation loop being further configured to measure the condition of the refrigerant with a refrigerant condition sensor disposed within the evaporator upstream of the evaporator outlet port; and control the flow of refrigerant to the evaporator based upon the measured condition of the refrigerant within the evaporator, and (b) a controller for controlling the flow rate of refrigerant to the evaporator based upon the measured condition of the refrigerant within the evaporator upstream of the evaporator outlet port. 1. A method of controlling a refrigeration system , wherein the refrigeration system comprises a refrigerant disposed within a fluid-tight circulation loop including a compressor , a condenser and an evaporator , the refrigerant being capable of existing in a liquefied state , a gaseous state and a two-phase state comprising both refrigerant in the liquefied state and refrigerant in the gaseous state , the evaporator having an outlet port and multiple evaporator zones in series , each evaporator zone having an evaporator zone inlet port , the method comprising the steps of:(a) compressing refrigerant in a gaseous state within the compressor and cooling the refrigerant within the condenser to yield refrigerant in the liquefied state;(b) flowing refrigerant from the condenser into the evaporator via the inlet ports of each evaporator zone, wherein the refrigerant partially exists in a two-phase state; and(c) flowing refrigerant from the evaporator to the compressor.2. The method of wherein the multiple zones in the evaporator are provided by a continuous length of tubing.3. The method of wherein the continuous length of tubing continually and smoothly expands from the inlet port of the most upstream evaporator zone to the outlet port of the ...

Подробнее
Номер записи: 50
11-01-2018 дата публикации

Heat transfer unit

Номер: US20180010836A1
Автор: Kazuya HIRAHARA, Naofumi Yokoyama, Satoshi Yagi
Принадлежит: Daikin Industries Ltd

A heat transfer unit includes: an electrical component casing defining an internal space, the internal space housing a transformer together with a control board and a power supply board; and a cooling unit which cools an electronic component on the power supply board during operation of a compressor.

Подробнее
Номер записи: 51
14-01-2021 дата публикации

CENTRIFUGAL COMPRESSOR FOR USE WITH LOW GLOBAL WARMING POTENTIAL (GWP) REFRIGERANT

Номер: US20210010478A1
Автор: BUSCH Jason, DRAKE Midori, MASAKI Kenichi
Принадлежит:

A centrifugal compressor is configured to be used for compressing a low global warming potential (GWP) refrigerant. The centrifugal compressor comprises a casing, an impeller, and a motor for rotating the impeller. The impeller is equipped with blades having a fully nonlinear shape in a quasi-orthogonal cross-sectional view. A hub-side blade angle delta of each of the blades from a hub portion of the first impeller to a mid-span position of the blade varies along a streamwise direction such that the hub-side blade angle delta is largest at a position closer to a leading edge of the first blade than to a trailing edge of the first blade. The casing is configured such that the low global warming potential (GWP) refrigerant enters the impeller from the inlet portion along an axial direction of the impeller and exits the impeller to the outlet portion in a radial direction of the impeller. 1. A centrifugal compressor for use with a low global warming potential (GWP) refrigerant , the centrifugal compressor comprising:a casing having a first inlet portion and a first outlet portion;a first impeller disposed between the first inlet portion and the first outlet portion, the first impeller being attached to a first end of a shaft that is rotatable about a rotation axis, the first impeller being equipped with first blades having a fully nonlinear shape in a quasi-orthogonal cross-sectional view, a hub-side blade angle delta of each of the first blades from a hub portion of the first impeller to a mid-span position of the first blade varying along a streamwise direction such that the hub-side blade angle delta is largest at a position closer to a leading edge of the first blade than to a trailing edge of the first blade;a motor arranged inside the casing to rotate the shaft in order to rotate the first impeller,the casing being configured such that the low global warming potential (GWP) refrigerant enters the impeller from the first inlet portion along an axial direction of ...

Подробнее
Номер записи: 52
14-01-2021 дата публикации

REFRIGERATION CYCLE APPARATUS

Номер: US20210010725A1
Автор: Ishiyama Hiroki
Принадлежит:

A refrigeration cycle apparatus includes: a refrigerant circuit; an oil reservoir; a first pipe that connects the oil separator and the oil reservoir, the first pipe being configured to send the refrigeration oil separated by the oil separator to the oil reservoir; a first valve provided at the first pipe; a second pipe that connects the oil reservoir and a suction side of the compressor; a second valve provided at the second pipe; a third pipe that connects the oil reservoir and the suction side of the compressor at a position lower than a position at which the second pipe is connected to the oil reservoir; and a third valve provided at the third pipe. The first to third valves are closed in a non-operational period of the compressor. 1. A refrigeration cycle apparatus comprising:a refrigerant circuit in which refrigerant circulates in the order of a compressor, an oil separator, a first heat exchanger, a decompressing apparatus, and a second heat exchanger and returns to the compressor;an oil reservoir configured to store refrigeration oil;a first pipe that connects the oil separator and the oil reservoir, the first pipe being configured to send the refrigeration oil separated by the oil separator to the oil reservoir;a first valve provided at the first pipe;a second pipe that connects the oil reservoir and a suction side of the compressor;a second valve provided at the second pipe;a third pipe that connects the oil reservoir and the suction side of the compressor at a position lower than a position at which the second pipe is connected to the oil reservoir; anda third valve provided at the third pipe, whereinthe first to third valves are closed in a non-operational period of the compressor;the refrigeration cycle apparatus further comprising:an oil concentration sensor configured to detect an oil concentration of liquid stored in the oil reservoir; anda controller configured to control respective degrees of opening of the first to third valves to allow the oil ...

Подробнее
Номер записи: 53
14-01-2021 дата публикации

Compressor Cooling Aggregate for a Refrigerator or a Cooler

Номер: US20210010726A1
Автор: Guan Weixian, Tan Wenmin, Wang Feng, WANG Peng
Принадлежит:

The present invention relates to a compressor cooling aggregate for a refrigerator or a cooler comprising a compressor base plate, a compressor, a condenser, a fan and a fan adapter, the fan adapter is configured to provide for an air flow path inside the fan adapter between the fan and the outside of the refrigerator or the cooler, wherein the fan is fixed to the fan adapter by means of at least one first snap structure. The present invention further relates to a cooler or refrigerator equipped with the compressor cooling aggregate. 1. A compressor cooling aggregate for a refrigerator or a cooler comprising a compressor base plate , a compressor , a condenser , a fan and a fan adapter , the fan adapter is configured to provide for an air flow path inside the fan adapter between the fan and the outside of the refrigerator or the cooler , wherein the fan is fixed to the fan adapter by at least one first fan snap structure.2. The compressor cooling aggregate according to claim 1 , wherein no screws are present to fix the fan to the fan adapter.3. The compressor cooling aggregate according to claim 1 , wherein the condenser is arranged close to the fan and the fan is arranged close to the fan adapter claim 1 , thereby defining an air flow path between the condenser and the outside of the refrigerator or the cooler.4. The compressor cooling aggregate according to claim 1 , wherein the at least one first snap structure comprises a first snap-in nose being part of the fan adapter claim 1 , which first snap-in nose engages with an edge of the fan.5. The compressor cooling aggregate according to claim 1 , wherein the fan adapter further comprises abutment portions extending away from the fan adapter in the vicinity of an area where the fan is fixed and the abutment portions are configured to laterally abut against the fan claim 1 , to prevent the fan from moving with respect to the fan adapter and in a direction within the area where the fan is fixed.6. The compressor ...

Подробнее
Номер записи: 54
15-01-2015 дата публикации

COMPRESSOR-HEAT EXCHANGER UNIT FOR A HEATING-COOLING MODULE FOR A MOTOR VEHICLE

Номер: US20150013353A1
Автор: Becker Uwe, Dittmar Jens, Schaefer Tilo, Zakeri Gholam Reza
Принадлежит:

The invention relates to a compressor-heat exchanger unit for a heating-cooling module for a motor vehicle, in which at least one fluid serving as a coolant flows, comprising a compressor device for compressing the first fluid, at least one heat exchanger device that has at least one first circuit for the first fluid to flow through and a second circuit for a second fluid to flow through, this heat exchanger unit being arranged in the fluid stream after the compressor device, characterised in that the first fluid is guided at least partially in flow channels of the first circuit that at least partially enclose the compressor device. 2. The compressor-heat exchanger unit as claimed in claim 1 , characterized in thatthe compressor-heat exchanger unit is of substantially cylindrical design, and thatthe at least one flow channel of the first circuit and the at least one flow channel of the second circuit of the heat exchanger device are arranged concentrically in a spiral around a longitudinal axis of the compressor-heat exchanger unit, and that the compressor device is arranged at least substantially radially to the inside of these flow channels.3. The compressor-heat exchanger unit as claimed in claim 1 , characterized in thatat least one flow channel of the first circuit and at least one flow channel of the second circuit of the heat exchanger device are arranged in such a way relative to one another that they are formed as countercurrent heat exchangers or as co-current heat exchangers.4. The compressor-heat exchanger unit as claimed in claim 3 , characterized in thata fluid designed as a refrigerant is carried in the first circuit, and in that a fluid designed as a coolant is carried in the second circuit.5. The compressor-heat exchanger unit as claimed in claim 3 , characterized in thateither at least one flow channel of the first circuit or at least one flow channel of the second circuit is arranged in such a way that it is substantially surrounded by the other ...

Подробнее
Номер записи: 55
09-01-2020 дата публикации

AIR CONDITIONER

Номер: US20200011546A1
Автор: HONG Seokpyo
Принадлежит:

The present invention relates to an air conditioner. The air conditioner according to an embodiment of the present invention has a refrigeration capacity of 16 kW to 28 kW, inclusive, and uses, as a refrigerant, a mixed refrigerant containing 50% or more of R32, and a refrigerant pipe therein includes a ductile stainless steel pipe having 1% or less of a delta-ferrite matrix structure with respect to the grain size area thereof. The refrigerant pipe includes a suction pipe for guiding the suction of the refrigerant into a compressor, and the outer diameter of the suction pipe is formed to be 19.05 mm and the inner diameter thereof is formed to be 18.07 mm or less. Also, the refrigerant pipe includes a discharge pipe for guiding the discharge of the refrigerant compressed by the compressor, and the outer diameter of the discharge pipe is formed to be 12.70 mm and the inner diameter thereof is formed to be 12.04 mm or less. 1. An air conditioner comprising:an outdoor unit comprising a compressor, an outdoor heat exchanger, a main expansion device, and a refrigerant pipe configured to connect the outdoor heat exchanger to the main expansion device;an indoor unit comprising an indoor heat exchanger; anda connection pipe configured to connect the outdoor unit to the indoor unit,wherein the air conditioner has refrigeration capacity of 16 kW to 28 kW,a mixed refrigerant containing 50% or more of R32 is used as a refrigerant,the refrigerant pipe is made of a ductile stainless steel material having a delta ferrite matrix structure of 1% or less on the basis of a grain area, andthe refrigerant pipe comprises a suction pipe that guides suction of a refrigerant into the compressor and has an outer diameter of 19.05 mm.2. The air conditioner according to claim 1 , wherein the refrigerant pipe further comprises a discharge pipe that guides discharge of the refrigerant compressed in the compressor and has an outer diameter of 12.70 mm.3. The air conditioner according to claim 2 , ...

Подробнее
Номер записи: 56
14-01-2021 дата публикации

COMPRESSOR

Номер: US20210013756A1
Автор: NISHIO Tomoki, UEDA Kenshi, YAHABA Shingo
Принадлежит: FUJITSU GENERAL LIMITED

A rotor that gives rotational power to a compressor part that compresses refrigerant has a rotor core in which through-holes through which the refrigerant passes are formed, the through-holes having a cross section with a plurality of forks in a direction away from a rotation axis, a first end plate that covers a first end surface where one end of both end portions of the through-holes of the rotor core closer to the compressor part is formed, and an upper rotor end plate that covers a lower rotor end surface where the other end of the plurality of holes of the rotor core is formed. The first end plate has a first opening portion that causes the through-holes to communicate with an internal space. The upper rotor end plate has an upper opening portion that causes the through-holes to communicate with the internal space. The upper rotor end plate has projection portions that cover tip end portions, which are divided to respective forks, of the through-holes. 1. A compressor comprising:a rotor;a stator that rotates the rotor around a rotation axis;a compressor part that compresses refrigerant by rotation of the rotor; anda sealed container that forms an internal space in which the rotor, the stator, and the compressor part are housed,wherein the rotor hasa rotor core in which a plurality of holes through which the refrigerant passes are formed,a first end plate that covers a first end surface where one end of both end portions of the plurality of holes of the rotor core closer to the compressor part is formed, anda second end plate that covers a second end surface where the other end of the plurality of holes of the rotor core is formed,the first end plate has a first opening portion that causes the plurality of holes to communicate with the internal space,the second end plate has a second opening portion that causes the plurality of holes to communicate with the internal space, anda plurality of projection portions that cover a region of the other end of the hole ...

Подробнее
Номер записи: 57
14-01-2021 дата публикации

MOTOR, COMPRESSOR, AND REFRIGERATION DEVICE

Номер: US20210013775A1
Автор: QIU Xiaohua, WANG Zhengxiang, ZHANG Hemao, ZHAO Dongliang
Принадлежит: GUANGDONG MEIZHI COMPRESSOR CO., LTD.

A motor and a compressor having the motor are provided. The motor has a stator and a rotor. The stator has a circular tubular stator core having an inner diameter and an outer diameter. The ratio k of the inner diameter to the outer diameter satisfies k>0.5. The rotor is provided in the cylindrical space formed by the stator core and has a rotor core and a magnetic member provided on the rotor core. The exhaust volume V of the compressor, the mass M of the rotor core and the magnetic member, and the maximum radius of an outer edge of the rotor satisfy 20.5; anda rotor provided in a cylindrical space formed by the stator core and comprising a rotor core and a magnetic member provided on the rotor core,{'sup': 2', '3, 'wherein the exhaust volume V of the compressor, the mass M of the rotor core and the magnetic member, and the maximum radius R of an outer edge of the rotor satisfy 20.57; and{'sup': '2', 'the exhaust volume V of the compressor, the mass M of the rotor core and the magnetic member, and the maximum radius R of the outer edge of the rotor satisfy 2.2 Подробнее

Номер записи: 58
03-02-2022 дата публикации

Cooling system

Номер: US20220034554A1
Автор: Shitong Zha, Xi SUN
Принадлежит: Heatcraft Refrigeration Products LLC

An apparatus includes a first expander, a first load, a first work recovery compressor, a valve, and a first compressor. The first expander expands a refrigerant. The first load uses the refrigerant to cool a space proximate the first load. The work recovery compressor compresses the refrigerant from the first load and is driven by the first expander. The valve reduces the pressure of the refrigerant from the work recovery compressor. The first compressor compresses the refrigerant from the valve.

Подробнее
Номер записи: 59
03-02-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220034557A1
Автор: Choi Jungsun, Lee Kangwook, LEE Kyungho
Принадлежит:

A scroll compressor includes a refrigerant suction pipe coupled to a discharge cover or a fixed scroll through a casing in a radial direction, a suction passage communicating the refrigerant suction pipe with a compression chamber, and a suction passage opening and closing valve disposed inside the suction passage to be slidable in an axial direction so as to selectively open or close the suction passage. Accordingly, when the compressor is stopped, oil or refrigerant in the casing can be restricted quickly so as not to flow back to the refrigerant suction pipe through a compression unit. 1. A scroll compressor comprising:a casing;a main frame provided in the casing;a fixed scroll having (i) a fixed end plate coupled to the main frame, (ii) a fixed wrap defined at a first side surface of the fixed end plate, and (iii) a discharge port defined through the fixed end plate at a side of the fixed wrap;an orbiting scroll having (i) an orbiting end plate located between the main frame and the fixed scroll, and (ii) an orbiting wrap defined at a side surface of the orbiting end plate, the orbiting wrap being configured to engage with the fixed wrap to thereby define a compression chamber in engagement with the fixed wrap;a discharge cover defining a discharge space that accommodates an outlet of the discharge port, the discharge cover being coupled to a second side surface of the fixed end plate opposite to the first side surface of the fixed end plate;a refrigerant suction pipe coupled to the discharge cover or the fixed scroll through the casing in a radial direction;a suction passage in fluid communication with the refrigerant suction pipe and the compression chamber; anda suction passage opening and closing valve provided inside the suction passage and configured to slide in an axial direction to thereby selectively open or close the suction passage.2. The scroll compressor of claim 1 , wherein the refrigerant suction pipe is coupled to the discharge cover or the fixed ...

Подробнее
Номер записи: 60
19-01-2017 дата публикации

Compressor system

Номер: US20170016438A1
Автор: David Genevois, Kongkham Lovan, LIANG FAN, Peng Liu, Shuguang Zhang, Ying Dong
Принадлежит: Danfoss Tianjin Ltd

A compressor system includes: at least one variable-speed compressor, at least one fixed-speed compressor, a main suction pipe and a main discharge pipe; respective suction pipes of the variable-speed compressor and the fixed-speed compressor are connected to the main suction pipe in parallel, and respective discharge pipes of the variable-speed compressor and the fixed-speed compressor are connected to the main discharge pipe in parallel. The main suction pipe is configured with an oil-gas separation fitting structure, and the oil-gas separation fitting structure is designed to enable most oil of oil-gas mixture from the main suction pipe to move into the variable-speed compressor, and to make the variable-speed compressor stay in an oil-rich state.

Подробнее
Номер записи: 61
19-01-2017 дата публикации

SYSTEM FOR HEATING A COMPRESSOR ASSEMBLY IN AN HVAC SYSTEM

Номер: US20170016439A1
Автор: GOEL Rakesh, Perez Eric
Принадлежит: Lennox Industries Inc.

The present invention provides a system for heating a compressor assembly of a heating, ventilation, and air conditioning (HVAC) system. The system comprises a heat source for transferring thermal energy to a plurality of compressor units. A controller varies the thermal energy transferred to the compressor units, between at least two substantially non-zero rates of transfer of thermal energy, in a plurality of modes of operation of the HVAC system. 1. A system for heating a compressor assembly of a heating , ventilation , and air conditioning (HVAC) system , the system comprising:a heat source comprising a first heater and a second heater, wherein the heat source is configured to transfer thermal energy to first and second compressor units of the compressor assembly;a controller operationally connected to the heat source, wherein the controller is configured to vary the thermal energy transferred to the first and second compressor units between at least three substantially non-zero rates of transfer of thermal energy in at least a first mode of operation and a second mode of operation of the HVAC system;wherein the first mode of operation comprises transferring heat, by the first heater and the second heater, to the first and second compressor units at a first setting, wherein the first setting comprises a non-zero first rate of transfer of thermal energy;wherein the second mode of operation comprises transferring heat, by the first heater and the second heater, to the first and second compressor units at a second setting, wherein the second setting comprises a non-zero second rate of transfer of thermal energy; set a rate of transfer of thermal energy by the first heater and second heater to a third setting, wherein the third setting comprises a non-zero third rate of transfer of thermal energy that is less than the non-zero second rate of transfer of thermal energy; and', 'operate the first heater and the second heater at the non-zero third rate of transfer of ...

Подробнее
Номер записи: 62
19-01-2017 дата публикации

Refrigeration System Including Evaporators Associated in Parallel

Номер: US20170016652A1
Автор: Thiessen Marcio Roberto
Принадлежит:

The present invention belongs to the technological field of refrigeration systems and, more particularly refrigeration systems used in residential applications, for example, refrigeration appliances including at least two climate chambers at different temperatures. Problem to be solved: Conventionally, existing Refrigeration systems including evaporators connected in parallel require complex compressors including at least two suction paths, or alternatively functional complex arrangements unable to maintain independence between the individual evaporators. Troubleshooting: Disclosed is a refrigeration system including evaporators connected in parallel where each of said evaporators operates through a separate feeding principle, and that this aspect makes it possible, with the aid of a liquid accumulator and phase separator, maintaining the independence between the individual evaporators, besides the use of a compressor. 1. Refrigeration system including at least two evaporators associated in parallel , where:said evaporators connected in parallel operate in different pressure and temperature ranges;said refrigeration system comprising at least two evaporators connected in parallel further comprising:at least one compressor, at least a condenser, at least a switching device at least a first expansion device, at least a second expansion device, and at least one fluid accumulator;the outflow of the compressor being fluidly connected to the inlet path from the condenser; the condenser outflow being fluidly connected to the switching device inlet path; the switching device outflow being fluidly connected to the first expansion device;the switching device outflow is fluidly connected to the second expansion device;said liquid accumulator comprising at least one lower inlet path immersed in the liquid, at least one upper inlet path, and at least one upper outflow;said refrigeration system comprising at least two evaporators connected in parallel being particularly ...

Подробнее
Номер записи: 63
19-01-2017 дата публикации

REFRIGERATION CYCLE DEVICE

Номер: US20170016654A1
Автор: Shimazu Yusuke
Принадлежит:

A refrigeration cycle apparatus in which working refrigerant is a zeotropic refrigerant mixture containing at least a first refrigerant and a second refrigerant having a higher boiling point than the first refrigerant at the same pressure, the refrigeration cycle apparatus including at least a main passage in which a compressor, a first heat exchanger, a first expansion valve, and a second heat exchanger are sequentially connected, the first refrigerant having a property of disproportionation, the first refrigerant having a smaller composition ratio in the compressor than a composition ratio of the first refrigerant passing through the main passage. 1. A refrigeration cycle apparatus operating with working refrigerant being a zeotropic refrigerant mixture containing at least first refrigerant and second refrigerant having a higher boiling point than the first refrigerant at a same pressure ,the refrigeration cycle apparatus comprising at least a main passage in which a compressor, a first heat exchanger, a first expansion valve, and a second heat exchanger are sequentially connected,the first refrigerant having a property of disproportionation,the main passage includes an oil separator connected between the compressor and the first heat exchanger and configured to separate the zeotropic refrigerant mixture containing the first refrigerant at a composition ratio to the refrigerant mixture, the composition ratio being lower than a composition ratio of the first refrigerant in the zeotropic refrigerant mixture passing through the main passage,the zeotropic refrigerant mixture having the lower composition ratio of the first refrigerant and separated by the oil separator, being supplied into the compressor from the oil separator through a bypass.28-. (canceled)9. The refrigeration cycle apparatus of claim 1 , wherein the bypass has an expansion device having an adjustable opening degree.10. The refrigeration cycle apparatus of claim 9 , wherein the opening degree of the ...

Подробнее
Номер записи: 64
19-01-2017 дата публикации

DC POWER-SUPPLY DEVICE, MOTOR DRIVE DEVICE INCLUDING THE SAME, AND REFRIGERATION-CYCLE APPLICATION DEVICE INCLUDING THE MOTOR DRIVE DEVICE

Номер: US20170016655A1
Автор: Hatakeyama Kazunori, KAMIYA Shota, Shinomoto Yosuke, UEMURA Keisuke
Принадлежит:

A first reactor is provided on the input side of a rectifying circuit that rectifies AC power (on the side of an AC power supply), and on the output side of the rectifying circuit (on the side of a load), first and second capacitors that are connected in series to each other, and first and second switching elements that switch between charging and not charging of the first and second capacitors, respectively, are provided, a second capacitor group in Y-connection, provided with three capacitors, each of which is connected to each phase-terminal of the first reactor on the side of the rectifying circuit, is connected to the midpoint of the first and second switching elements, and the output voltage to the load is boosted, while the on-duty of the first switching element and the on-duty of the second switching element are controlled to be equal to each other. 1. A DC power-supply device that converts an alternating current supplied from an AC power supply to a direct current , and that supplies the direct current to a load , the DC power-supply device comprising:a rectifying circuit that rectifies the alternating current;a first reactor that is inserted between the AC power supply and the rectifying circuit for each phase;a first capacitor group that is provided with a first capacitor and a second capacitor connected in series to each other, and that is connected between output terminals to the load;a switching element group that is provided with a first switching element and a second switching element connected in series to each other, and that is connected in parallel to between the rectifying circuit and the first capacitor group;a backflow prevention unit that prevents a backflow of electric charge to the switching element group, where the electric charge is stored in the first capacitor group by an operation of the switching element group; anda second capacitor group that is provided with three capacitors, in each of which one end is electrically connected to a ...

Подробнее
Номер записи: 65
21-01-2016 дата публикации

LINEAR COMPRESSOR AND REFRIGERATOR INCLUDING A LINEAR COMPRESSOR

Номер: US20160017878A1
Автор: HAN Youngcheol, Kim Changkyu, KIM Junghae
Принадлежит:

A linear compressor and a refrigerator including a linear compressor are provided. The linear compressor may include a shell coupled to a suction inlet, through which a refrigerant may be introduced, and a discharge outlet, through which the refrigerant may be discharged, a cylinder disposed within the shell to accommodate a piston reciprocated to compress the refrigerant introduced through the suction inlet, a frame that accommodates the cylinder, the frame being mounted inside the shell, and a discharge cover coupled to a front surface of the frame to discharge the refrigerant compressed by the piston to the discharge outlet. A front surface of the cylinder that faces the discharge cover may be spaced a predetermined distance from the discharged cover.

Подробнее
Номер записи: 66
21-01-2016 дата публикации

REFRIGERATION APPARATUS

Номер: US20160018148A1
Автор: Yura Yoshinori
Принадлежит:

A refrigeration apparatus includes a compressor and a controller. The compressor has a casing and a compression element. Compressed refrigerant is sent out of the casing after being discharged into an internal space of the casing. An oil sump formed in the casing collects refrigerator oil. A heater heats the refrigerator oil collected. The controller controls the heater while the refrigeration apparatus is stopped so that a temperature of the refrigerator oil collected in the oil sump reaches a first oil temperature target value. The first oil temperature target value is set in order to keep a refrigerant condensation amount of the refrigerant equal to or less than an allowable condensation amount at which the concentration or viscosity of the refrigerator oil needed to lubricate the compressor can be maintained. The refrigerant condensation amount is caused by in-dome condensation at the start of operation of the refrigeration apparatus.

Подробнее
Номер записи: 67
18-01-2018 дата публикации

Variable economizer injection position

Номер: US20180017059A1
Автор: Jay H. Johnson
Принадлежит: Shalewater Solutions LLC, Trane International Inc

A compressor includes a bore, a rotor disposed within the bore, a compressor inlet, and a compressor outlet. The compressor further includes a compression chamber defined between the bore and the rotor, wherein a volume of the compression chamber gradually reduces from the compressor inlet to the compressor outlet. The compressor includes an economizer. The economizer is fluidically connected to the compression chamber. The economizer is configured to inject a working fluid into the compression chamber at an injection position. The injection position is changeable according to a working condition of the compressor.

Подробнее
Номер записи: 68
18-01-2018 дата публикации

VARIABLE VOLUME RATIO COMPRESSOR

Номер: US20180017060A1
Автор: JR. Paul, Nemit
Принадлежит:

A compressor and method for controlling the volume ratio of a compressor is provided. The compressor includes a an intake passage, a discharge passage and a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage. At least one opening is positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage, the at least one opening being sized and positioned to automatically vary a volume ratio in the compressor in response to a varying pressure differential between the intake passage and the discharge passage. 1. A compressor comprising:an intake passage;a discharge passage;a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage; andat least one opening positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage;wherein the at least one opening being sized and positioned to automatically vary a volume ratio in the compressor in response to a varying pressure differential between the intake passage and the discharge passage.2. The compressor of claim 1 , wherein the volume ratio is variable between a partial load and a full load.3. The compressor of claim 1 , wherein the compressor is a screw compressor.4. The compressor of claim 3 , wherein the screw compressor includes a first rotor and a second rotor.5. The compressor of claim 4 , wherein the at least one opening is positioned in fluid communication with at least one of the first rotor and the second rotor.6. The compressor of claim 4 , wherein the at least one opening is positioned in fluid communication with each of the first rotor and the second rotor.7. The compressor of claim 6 , wherein at least a portion of the at least one opening is positioned symmetric to a plane positioned ...

Подробнее
Номер записи: 69
18-01-2018 дата публикации

COOLING FAN FOR REFRIGERANT COOLED MOTOR

Номер: US20180017296A1
Автор: Heger Joseph M.
Принадлежит:

An electric motor for a vapor compression system is disclosed. The electric motor is provided with a working fluid. The electric motor includes a housing forming cavity therein. The housing includes a rotor, a stator, and a shaft. The rotor is secured to the shaft and the stator surrounds at least a portion of the rotor. An airgap is formed between the rotor and the stator. An inlet of the housing receives the working fluid and is in fluid communication with the airgap. An outlet of the housing is in fluid communication with the airgap and receives the working fluid from the airgap. The electric motor further includes an impeller that induces flow of the working fluid between the inlet and the outlet. 1. An electric motor for a vapor compression system , the electric motor being provided with a working fluid , the electric motor comprising: a rotor, a stator, and a shaft, wherein the rotor is secured to the shaft and the stator surrounds at least a portion of the rotor;', 'an airgap formed between the rotor and the stator;', 'an inlet that receives the working fluid and is in fluid communication with the airgap;', 'an outlet that is in fluid communication with the airgap and receives the working fluid from the airgap; and', 'an impeller that induces flow of the working fluid between the inlet and the outlet., 'a housing forming cavity therein, the housing including2. The electric motor according to claim 1 , wherein the impeller is disposed on an upstream side of the rotor and the stator and is configured to push the working fluid from the inlet to the outlet.3. The electric motor according to claim 1 , wherein the impeller is disposed on a downstream side of the rotor and the stator and is configured to pull the working fluid from the inlet to the outlet.4. The electric motor according to claim 1 , further comprising a second impeller claim 1 , wherein the impeller is disposed on an upstream side of the rotor and the stator.5. The electric motor according to claim ...

Подробнее
Номер записи: 70
17-01-2019 дата публикации

Variable Speed Compressor Protection System And Method

Номер: US20190017508A1
Автор: PHAM Hung M., SEIBEL Stephen M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A system and method for a compressor includes a compressor connected to a condenser, a discharge line temperature sensor that outputs a discharge line temperature signal corresponding to a discharge line temperature of refrigerant leaving the compressor, and a control module connected to the discharge line temperature sensor. The control module determines a saturated condenser temperature, calculates a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature, and monitors a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold. The control module increases a speed of the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold. 1. A method comprising:determining, with a control module, a saturated condenser temperature of a condenser connected to a compressor;receiving, with the control module, a discharge line temperature signal that corresponds to a discharge line temperature of refrigerant leaving the compressor;calculating, with the control module, a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature;monitoring, with the control module, a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold; andincreasing a speed of the compressor, with the control module, when the discharge superheat temperature is less than or equal to the predetermined threshold.2. The method of wherein the predetermined threshold is thirty degrees Fahrenheit.3. The method of wherein the control module increases the speed of the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold.4. The method of further comprising decreasing claim 1 , with the control module claim 1 , an opening of an expansion valve associated with the compressor when the discharge ...

Подробнее
Номер записи: 71
17-04-2014 дата публикации

Fluid management in a hvac system

Номер: US20140102665A1
Автор: Benjamin E. Dingel, Harry Kenneth Ring, Lee L. Sibik
Принадлежит: Trane International Inc

Embodiments of a spill over tank for an evaporator of a HVAC system are described. The spill over tank may be configured to receive a refrigerant directed out of the evaporator. The spill over tank may be configured to have an outlet directing refrigerant in the spill over tank out of the spill over tank and flowing back to a compressor of the HVAC system. The spill over tank may be equipped with a refrigerant level sensor configured to measure a refrigerant level in the spill over tank. The measured refrigerant level in the spill over tank may be used to control and/or maintain a refrigerant level in the evaporator, and/or may be used to control a return refrigerant flow into the compressor of the HVAC system so as to manage an oil return to the compressor.

Подробнее
Номер записи: 72
19-01-2017 дата публикации

COOLING OF ELECTROLYTIC CAPACITORS IN ELECTRICAL CLIMATE COMPRESSORS

Номер: US20170018367A1
Автор: Lenz Mario, Pfahl Wilfried, Werker Stephan
Принадлежит:

A system for mounting at least one cylindrical electrolytic capacitor on a heat sink, the heat sink having at least one bore for at least partially receiving a cylindrical electrolytic capacitor, and the bore partially or fully encompassing the cylindrical electrolytic capacitor once it has been received, wherein lateral surfaces of the cylindrical electrolytic capacitor are mechanically and thermally connected to surfaces forming the bore. The system providing thermal cooling of the electrolytic capacitor and enabling substantially uniform thermal cooling of the capacitor. A method for producing a connection between the at least one cylindrical electrolytic capacitor and the heat sink, and to a connection, obtainable by the method, between the at least one electrolytic capacitor and the heat sink. 1. A system for mounting at least one cylindrical electrolytic capacitor , the system comprising:a heat sink having at least one bore at least partially receiving the at least one cylindrical electrolytic capacitor, the at least one bore partially or fully encompassing the at least one cylindrical electrolytic capacitor, wherein lateral surfaces of the at least one cylindrical electrolytic capacitor are mechanically and thermally connected to surfaces forming the at least one bore.2. The system according to claim 1 , wherein the lateral surfaces of the at least one cylindrical electrolytic capacitor are mechanically and thermally connected to the surfaces forming the at least one bore claim 1 , and wherein the lateral surfaces are adhesively bonded in the at least one bore by a thermally conductive adhesive.3. The system according to claim 2 , wherein the thermally conductive adhesive has a thermal conductivity of 1 to 10 W/mK.4. The system according to claim 1 , wherein the lateral surfaces of the at least one cylindrical electrolytic capacitor are mechanically and thermally connected to the surfaces of the at least one bore claim 1 , wherein the at least one ...

Подробнее
Номер записи: 73
22-01-2015 дата публикации

COMPRESSOR AND AIR CONDITIONING APPARATUS USING THE SAME

Номер: US20150020539A1
Автор: Lee Jeong Bae, Nam Ki Hoon, Park Soo Dol
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

An air conditioning apparatus including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve to depressurize a refrigerant. The refrigerant is formed of hydro fluorocarbon (HFC). The compressor includes a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor, and the oil contains a carbon nanoparticle. Even when an HFC-based refrigerant producing high discharge temperature in a compressor is used, deterioration of the compressor due to the high temperature is prevented. In addition, by lowering the operational temperature of the compressor, the reliability and performance of the compressor using the HFC-based refrigerant and the air conditioning apparatus using the same may be enhanced. 1. An air conditioning apparatus comprising:a compressor to compress a refrigerant;an outdoor heat exchanger to perform heat exchange between outdoor air and the refrigerant;an indoor heat exchanger to perform heat exchange between indoor air and the refrigerant; andan expansion valve to depressurize the refrigerant,wherein the refrigerant is formed of hydrofluorocarbon (HFC);the compressor comprises a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit through a rotating shaft connected to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor; andthe oil contains a carbon nanoparticle.2. The air conditioning apparatus according to claim 1 , wherein the refrigerant comprises methylene fluoride claim 1 , the percentage of the methylene fluoride being at least 40%.3. The air conditioning apparatus according to claim 2 , wherein the refrigerant further ...

Подробнее
Номер записи: 74
16-01-2020 дата публикации

Device for driving a compressor and method for assembling the device

Номер: US20200018300A1
Автор: Bernd Guntermann, David Walisko, Stephan Heinrichs
Принадлежит: Hanon Systems Corp

The invention relates to a device for driving a compressor of a vaporous fluid, particularly an electric motor. The device has a rotor and a stator, which are extended along a common longitudinal axis, as well as an insulation element. The insulation element is designed as a single part and connected with a stator core of the stator in a form-fitting manner such that the stator core and the insulation element form an integral and single-part component of the stator. The invention further relates to a method for producing a stator of the device, particularly the stator core with the insulation element.

Подробнее
Номер записи: 75
21-01-2021 дата публикации

ROTARY COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

Номер: US20210018231A1
Автор: Hatayama Masahiro, MIZUNO HIROYUKI, Nagahata Taishi
Принадлежит: TOSHIBA CARRIER CORPORATION

According to one embodiment, a rotary compressor includes a compression mechanism unit and an electric motor. The compression mechanism unit includes a first bearing, a second bearing, first to third refrigerant compression units, a second intermediate partitioning panel, and a rotation shaft. The compression mechanism unit is fixed to the sealed container by a pair of fixing units which are provided at two locations spaced apart from each other in the axial direction of the rotation shaft, and the center of gravity of a structure comprising the compression mechanism unit and the rotor of the electric motor is positioned between the pair of fixing units. 1. A rotary compressor comprising:a cylindrical sealed container;a compression mechanism unit compressing a refrigerant inside the sealed container; andan electric motor including a stator fixed to an inner peripheral surface of the sealed container on an upper side of the compression mechanism unit and a rotor surrounded by the stator to drive the compression mechanism unit inside the sealed container, a first bearing and a second baring arranged in intervals in an axial direction of the sealed container;', 'first to third refrigerant compression units arranged in intervals in an axial direction of the sealed container between the first bearing and the second bearing;', 'a first intermediate partition plate interposed between the first refrigerant compression unit and the second refrigerant compression unit;', 'a second intermediate partition plate interposed between the second refrigerant compression unit and the third refrigerant compression unit; and', 'a rotary shaft including a first journal portion supported by the first bearing, a second journal portion supported by the second bearing, the first journal portion, first to third crank portions provided between the first journal portion and the second journal portion to eccentrically rotate in cylinder chambers of the first to third refrigerant compression ...

Подробнее
Номер записи: 76
16-01-2020 дата публикации

CHILLER MOTOR WITH COOLING FLOW PATH

Номер: US20200018527A1
Автор: Heisey Matthew L., Snell Paul W.
Принадлежит: Johnson Controls Technology Company

A cooling system for a motor to power a compressor in a vapor compression system is provided. The cooling system includes a housing with a cavity enclosing the motor and defining a central axis and fluid directing features extending into the cavity and oriented parallel to the central axis. The cooling system further includes a fluid circuit configured to circulate a cooling fluid between the housing and the motor. The fluid circuit includes a first cooling fluid path defined by directing features that cause a first portion of cooling fluid to travel around a first portion of the motor and a second cooling fluid path defined by fluid directing features that cause a second portion of cooling fluid to travel around a second portion of the motor. The second portion of the motor is located opposite the first portion. 1. A cooling system for a motor to power a compressor in a vapor compression system , the cooling system comprising: a cavity enclosing the motor and defining a central axis; and', 'a plurality of fluid directing features extending into the cavity and oriented parallel to the central axis; and, 'a housing comprising a first cooling fluid path defined at least partially by the plurality of fluid directing features that cause a first portion of cooling fluid to travel around a first portion of the motor, and', 'a second cooling fluid path defined at least partially by the plurality of fluid directing features that cause a second portion of cooling fluid to travel around a second portion of the motor, wherein the second portion of the motor is located opposite the first portion., 'a fluid circuit configured to circulate a cooling fluid between the housing and the motor, the fluid circuit comprising2. The cooling system of claim 1 , wherein the first cooling fluid path and the second cooling fluid path are serpentine-shaped.3. The cooling system of claim 1 , wherein the fluid circuit further comprises a first connection in the housing to receive cooling fluid ...

Подробнее
Номер записи: 77
16-01-2020 дата публикации

Motor driving device and air conditioner

Номер: US20200018534A1
Автор: Atsushi Tsuchiya, Keisuke Uemura, Kenji Iwazaki, Koichi Arisawa, Takashi Yamakawa
Принадлежит: Mitsubishi Electric Corp

A motor driving device and an air conditioner are capable of increasing the efficiency in a low speed region in which a motor performs low speed rotation. The motor driving device that is a motor driving device for driving a motor including stator windings, includes: a connection switching unit that switches connection condition of the stator windings to either of first connection condition and second connection condition different from the first connection condition; and an inverter that converts a DC voltage into AC drive voltages and supplies the AC drive voltages to the stator windings. The inverter includes MOS transistors as switching elements.

Подробнее
Номер записи: 78
16-01-2020 дата публикации

ROTOR FOR ELECTRIC MOTOR, ELECTRIC MOTOR AND COMPRESSOR

Номер: US20200021152A1
Автор: Xu Ben
Принадлежит:

Disclosed are a rotor for an electric motor, an electric motor, and a compressor. The rotor includes: a rotor core (), provided with a shaft hole () and four magnet grooves (); and four permanent magnets (), disposed in corresponding magnet grooves, each permanent magnet including a first surface () and a second surface (). When viewed from a projection surface, the first surface has an arc segment (), and the second surface has a plurality of straight segments connected in sequence. A thickness H of each permanent magnet on a corresponding magnetic pole centerline, a length L of the second surface projected on the projection surface, and a radius R of the rotor core satisfying the following relationships: 0.24≤H/R≤0.26 and 1.07≤L/R≤1.11. 1. A rotor for an electric motor , comprising: a shaft hole, wherein the shaft hole is circular and has a center; and', 'four magnet grooves equally-spaced around a circumference of the shaft hole, both ends of each magnet groove being provided with a magnetic isolation slot in communication with the magnet groove, a magnetic isolation bridge being defined between two adjacent magnetic isolation slots; and, 'a rotor core having a circular cross section, wherein the circular cross section defines a central axis of the rotor, the rotor core comprisingfour permanent magnets each provided in a corresponding magnet groove, a shape of each magnet matching a shape of the corresponding permanent magnet groove, each permanent magnet comprising a first surface and a second surface arranged opposite each other in a radial direction of the rotor core, the second surface being radially approximate to the shaft hole,wherein, when viewed from a projection surface that is perpendicular to the central axis of the rotor, the first surface comprises an arc segment, when viewed from the projection surface, the second surface comprises a plurality of straight segments connected sequentially, with an angle between two adjacent straight segments,wherein ...

Подробнее
Номер записи: 79
16-01-2020 дата публикации

MOTOR DRIVING DEVICE AND AIR CONDITIONER

Номер: US20200021225A1
Автор: Arisawa Koichi, IWAZAKI Kenji, Tsuchiya Atsushi, UEMURA Keisuke, Yamakawa Takashi
Принадлежит:

A motor driving device that is a device for driving a motor including stator windings, includes: a connection switching unit that includes relays as mechanical switches connected to the stator windings and excitation coils opening or closing the relays by being energized or non-energized with excitation current and switches connection condition of the stator windings to either of first connection condition (star connection) and second connection condition (delta connection) different from the first connection condition by opening or closing the relays; and an inverter that supplies AC drive voltages to the stator windings. 1. A motor driving device for driving a motor including stator windings , comprising:a connection switching unit that includes a mechanical switch connected to the stator windings and an excitation coil opening or closing the mechanical switch by being energized or non-energized with excitation current and switches connection condition of the stator windings to either of star connection and delta connection by opening or closing the mechanical switch; andan inverter that supplies AC drive voltages to the stator windings, wherein the stator windings include a first open winding, a second open winding and a third open winding,the first open winding has a first winding terminal connected to the inverter and a second winding terminal connected to the connection switching unit,the second open winding has a third winding terminal connected to the inverter and a fourth winding terminal connected to the connection switching unit,the third open winding has a fifth winding terminal connected to the inverter and a sixth winding terminal connected to the connection switching unit, andthe connection switching unitswitches the connection condition of the stator windings to the star connection by connecting the second winding terminal of the first open winding, the fourth winding terminal of the second open winding and the sixth winding terminal of the third ...

Подробнее
Номер записи: 80
28-01-2016 дата публикации

System and method for retrofitting a refrigeration system from hcfc to hfc refrigerant

Номер: US20160025395A1
Автор: Charles Harkins
Принадлежит: Hudson Technologies Inc

A system and method for retrofitting a refrigeration system containing an HCFC refrigerant and a compatible lubricant, with an HFC refrigerant, comprising providing a transport container containing a mixture of a miscible lubricant and the HFC refrigerant, removing the HCFC refrigerant from the refrigeration system while maintaining at least a portion of a lubricant immiscible with the HFC refrigerant, and charging the refrigeration system with the mixture. The polyol ester lubricant may be present in a range exceeding about 5-15% by weight, e.g., 8%.

Подробнее
Номер записи: 81
28-01-2016 дата публикации

LOW LOAD CAPACITY PROTECTION

Номер: US20160025397A1
Автор: Burnham Randall Scott, FOO JJ, GAYNOR Mike, Stark Mike
Принадлежит: THERMO KING CORPORATION

A generator set for a transport refrigeration unit that is operable at a first frequency and a second frequency. The generator set includes a controller, a generator and a prime mover coupled to the generator. The prime mover selectively drives the generator in least at a first non-zero speed and a second non-zero speed. The controller can detect a capacity of the transport refrigeration unit and change the speed of the generator set to maintain a desired temperature within a transport unit. 1. A method for controlling a speed of a generator set that includes a prime mover and a generator , the method comprising:a controller determining whether a transport refrigeration unit has sufficient capacity to maintain a desired temperature within a transport unit;changing a speed of the prime mover from a first speed to a second speed, that is greater than the first speed, so as to provide sufficient capacity to the transport refrigeration unit when the transport refrigeration unit does not have sufficient capacity to maintain a desired temperature within the transport unit, the controller determining whether the speed of the of the prime mover is within a first threshold range;', 'the controller determining whether a load of the generator is above a second threshold; and, 'wherein the controller determining whether the transport refrigeration unit has sufficient capacity to maintain the desired temperature within the transport unit includesthe controller detecting an increasing generator load slope condition.2. (canceled)3. The method of claim 1 , wherein changing the speed of the prime mover from the first speed to the second speed includes switching the prime mover from the first speed to the second speed when the first speed of the prime mover is within the first threshold range claim 1 , the load of the generator is above the second threshold and the increasing generator load slope condition is detected.4. The method of claim 1 , wherein the load of the generator ...

Подробнее
Номер записи: 82
25-01-2018 дата публикации

SCALLOP STEP FOR A SCROLL COMPRESSOR

Номер: US20180023569A1
Автор: BRANCH Scott M., Mlsna Eric S., SMERUD Scott J.
Принадлежит:

A scroll member for a scroll compressor is disclosed. The scroll member includes a base member and a wrap member formed on a major surface of the base member. The wrap member includes a modified portion. The modified portion includes a base, a step, and a scallop. The base extends a first distance from the major surface. The step extends a second distance from the base. The scallop extends a third distance from the scallop. The scallop is located at a wrap surface of the wrap member. The wrap surface is disposed relatively away from the major surface relative to the step. 1. A scroll member for a scroll compressor , comprising:a base member; anda wrap member formed on a major surface of the base member;wherein the wrap member includes a modified portion, the modified portion including a base, a step, and a scallop, the base extending a first distance from the major surface, the step extending a second distance from the base, the scallop extending a third distance from the step, the scallop being located at a wrap surface of the wrap member, the wrap surface being disposed relatively away from the major surface relative to the step.2. The scroll member according to claim 1 , wherein a thickness of the base is relatively greater than a thickness of the step.3. The scroll member according to claim 2 , wherein the thickness of the step is relatively greater than a thickness of the scallop.4. The scroll member according to claim 1 , wherein the modified portion is disposed at a tip portion of the wrap member claim 1 , the tip portion being disposed adjacent to a discharge port of the scroll compressor.5. The scroll member according to claim 1 , wherein the base member and the wrap member are formed of a single piece claim 1 , unitary construction.6. The scroll member according to claim 1 , wherein the scroll member further includes a groove in the wrap surface of the wrap member.7. A scroll compressor claim 1 , comprising:a compressor housing;a non-orbiting scroll member ...

Подробнее
Номер записи: 83
25-01-2018 дата публикации

CENTRIFUGAL COMPRESSOR AND MAGNETIC BEARING BACKUP SYSTEM FOR CENTRIFUGAL COMPRESSOR

Номер: US20180023584A1
Автор: Morgan Jeffrey Allen, Onodera Fumiaki, Ueda Tsuyoshi
Принадлежит:

A centrifugal compressor includes a casing, an impeller, a motor, a diffuser, a magnetic bearing, and a magnetic bearing backup system including at least one dynamic gas bearing and at least one hydrostatic gas bearing. The impeller is attached to a shaft rotatable about a rotation axis. The motor is configured and arranged to rotate the shaft in order to rotate the impeller. The magnetic bearing rotatably supports the shaft. The magnetic bearing backup system is configured and arranged to support the shaft when the magnetic bearing stops operating. The at least one dynamic gas bearing and the at least one hydrostatic gas bearing of the magnetic bearing backup system are disposed radially inwardly relative to the magnetic bearing. 1. A centrifugal compressor used to compress refrigerant and adapted to be used in a chiller system including an evaporator , a condenser , and an expansion mechanism , the centrifugal compressor comprising: 'an impeller attached to a shaft rotatable about a rotation axis;', 'a casing having an inlet portion and an outlet portion;'}a motor configured and arranged to rotate the shaft in order to rotate the impeller;a diffuser disposed in the outlet portion downstream of the impeller;a magnetic bearing rotatably supporting the shaft; and at least one dynamic gas bearing, and', 'at least one hydrostatic gas bearing,', 'the at least one dynamic gas bearing and the at least one hydrostatic gas bearing being disposed radially inwardly relative to the magnetic bearing., 'a magnetic bearing backup system configured and arranged to support the shaft when the magnetic bearing stops operating, the magnetic bearing backup system including'}2. The centrifugal compressor according to claim 1 , whereinthe at least one dynamic gas bearing and the at least one hydrostatic gas bearing are disposed adjacent to both ends of the shaft of the compressor in an axial direction, respectively.3. The centrifugal compressor according to claim 1 , whereinthe at least ...

Подробнее
Номер записи: 84
25-01-2018 дата публикации

REFRIGERATION CYCLE APPARATUS

Номер: US20180023868A1
Автор: Ishiyama Hiroki, Kato Yohei, Yanachi Satoru
Принадлежит:

A refrigeration cycle apparatus includes: a refrigerant circuit including a compressor, a condenser, an expansion device, and an evaporator; a first detector provided to the compressor, and configured to detect a temperature of the compressor; a second detector provided between the compressor and the expansion device in the refrigerant circuit, and configured to detect one of a temperature of refrigerant and a pressure of the refrigerant; and a controller configured to control at least one of frequency of the compressor and an opening degree of the expansion device based on the temperature detected by the first detector and one of the temperature and the pressure detected by the second detector so as to maintain a concentration of a refrigerating machine oil dissolved in the refrigerant in the compressor and an oil level of the refrigerating machine oil in the compressor within respective predetermined ranges. 1. A refrigeration cycle apparatus comprising:a refrigerant circuit including a compressor, a condenser, an expansion device, and an evaporator;a first detector provided to the compressor, and configured to detect a temperature of the compressor;a second detector provided between the compressor and the expansion device in the refrigerant circuit, and configured to detect one of a temperature of refrigerant and a pressure of the refrigerant;an oil separator connected to a refrigerant discharge side of the compressor, and configured to separate a refrigerating machine oil from the refrigerant;an oil return pipe connecting the oil separator and a refrigerant suction side of the compressor, and configured to return the refrigerating machine oil stored in the oil separator;an oil regulating valve provided in the oil return pipe, and configured to open and close a flow path of the oil return pipe;an oil separation switching valve connected to the refrigerant discharge side of the compressor and the oil separator, and configured to switch to connect the compressor ...

Подробнее
Номер записи: 85
25-01-2018 дата публикации

Temperature control method

Номер: US20180023871A1
Автор: Kazuyoshi Matsuzaki, Yasuharu Sasaki
Принадлежит: Tokyo Electron Ltd

A temperature control method is performed by a temperature control apparatus including a heat exchanger configured to exchange heat using a phase change of a refrigerant, a rotary pump configured to receive the refrigerant from the heat exchanger and fuse the refrigerant with oil contained inside the rotary pump, and an oil refrigerant separator configured to receive the refrigerant fused with the oil from the rotary pump and separate the refrigerant from the oil. The temperature control method includes the steps of: circulating the refrigerant separated from the oil back to the heat exchanger; and adjusting at least one of a rotation speed of a rotor of the rotary pump, a position of a valve arranged at a connecting portion of the rotary pump and the heat exchanger, and a position of an airflow adjustment valve arranged at a connecting portion of the oil refrigerant separator and the heat exchanger.

Подробнее
Номер записи: 86
10-02-2022 дата публикации

Systems And Methods For Multi-Stage Operation Of A Compressor

Номер: US20220042731A1
Автор: Charles E. Green, John F. Broker, Kashmira Patel
Принадлежит: Emerson Climate Technologies Inc

A system for controlling a capacity of a compressor includes a motor of the compressor including a main winding connected at a connection point to an auxiliary winding and a drive configured to control a speed of the motor. The system includes a first switch configured to selectively connect the main winding to either a first line voltage or a first output of the drive, a second switch configured to selectively connect the connection point to either a second line voltage or a second output of the drive, and a third switch configured to selectively connect the auxiliary winding to either a capacitor or a third output of the drive. The system includes a solenoid valve configured to selectively either operate in a first capacity or a second capacity. The system includes a control module configured to control the drive, the first switch, the second switch, and the third switch.

Подробнее
Номер записи: 87
24-01-2019 дата публикации

Air Compressor

Номер: US20190024651A1
Автор: KAWAI Ryoji, KOTANI Masanao, Sekiya Sachio, Tsuchiya Takeshi
Принадлежит:

An oil—cooled air compressor is provided with: an oil—cooled air compressor for compressing sucked-in air and discharging the compressed air; an oil separator for separating the compressed air and lubricating oil, which are discharged from the air compressor body; an oil cooler for cooling, by outside air, lubricating oil discharged from the oil separator; oil supply pipe passage for supplying lubricating oil, which is discharged from the oil cooler, to a bearing of the air compressor body and to an intermediate section in the process of compression by the air compressor; and an after-cooler for cooling, by outside air, air discharged from the oil separator. The oil-cooled air compressor in which the air compressor, the oil separator, the oil cooler, and the after-cooler are connected to supply high-pressure air to the outside of the compressor is provided with a vapor compression type refrigeration cycle. 1. An air compressor being an oil-cooled air compressor including: an oil-cooled air compressor that compresses intake air and discharges the air; an oil separator that separates compressed air discharged from the air compressor body and lubricating oil from each other; an oil cooler that cools the lubricating oil discharged from the oil separator with outside air; an oil supply pipeline for supplying the lubricating oil discharged from the oil cooler to a bearing of the air compressor body and an intermediate part of the air compressor during compression; and an aftercooler that cools the air discharged from the oil separator with the outside air , wherein the air compressor , the oil separator , the oil cooler , and the aftercooler are connected together to supply high pressure air outside the compressor ,the air compressor comprising a refrigeration cycle of a vapor compression type, wherein the refrigeration cycle is constructed by annularly connecting a refrigerant compressor, a condenser, an expansion valve, a first evaporator, and a second evaporator ...

Подробнее
Номер записи: 88
28-01-2021 дата публикации

DRIVE CIRCUIT FOR A VARIABLE SPEED FAN MOTOR

Номер: US20210025631A1
Автор: Chretien Ludovic Andre, Mullin Paul S., Thompson Daniel E.
Принадлежит:

A fan drive circuit for a variable speed fan motor in a cooling system, includes an inverter configured to supply a current signal to stator windings of the variable speed fan motor, a frequency detection circuit coupled to an output stage of an inverter of a compressor motor of the cooling system and configured to detect a first frequency of a compressor current signal at the output stage of a variable speed compressor drive circuit and generate a frequency signal, and a digital signal processor (DSP) coupled to the inverter and the frequency detection circuit. The DSP is configured to receive the frequency signal corresponding to the first frequency from the frequency detection circuit, select a second frequency corresponding to the first frequency at which to operate the variable speed fan motor, and transmit control signals to the inverter to supply current to the stator windings at the second frequency. 1. A fan drive circuit for a variable speed fan motor in a cooling system , said fan drive circuit comprising:a fan inverter configured to supply a current signal to stator windings of the variable speed fan motor;a sensor coupled to a power input stage of a compressor motor and configured to generate a sensor signal, wherein the sensor signal represents an amplitude of one of a current or a power at the power input stage; and receive the sensor signal corresponding to the amplitude from said sensor;', 'select a frequency corresponding to the amplitude at which to operate the variable speed fan motor; and', 'transmit control signals to said fan inverter to supply current to the stator windings at the selected frequency., 'a digital signal processor (DSP) coupled to said fan inverter and said sensor, said DSP configured to2. The fan drive circuit of claim 1 , wherein the compressor motor is configured to rotate a compressor of the cooling system.3. The fan drive circuit of claim 1 , wherein said sensor comprises a current transformer.4. The fan drive circuit of ...

Подробнее
Номер записи: 89
02-02-2017 дата публикации

USE OF R-1233 IN LIQUID CHILLERS

Номер: US20170029679A1
Автор: Bonnet Philippe, Van Horn Brett L.
Принадлежит:

This invention relates to the use of chloro-trifluoropropenes as refrigerants in negative-pressure liquid chillers and methods of replacing an existing refrigerant in a chiller with chloro-trifluoropropenes. The chloro-trifluoropropenes, particularly 1-chloro-3,3,3-trifluoropropene, have high efficiency and unexpectedly high capacity in liquid chiller applications and are useful as more environmentally sustainable refrigerants for such applications, including the replacement of R-123 and R-11. 1. A chiller system comprising a compressor , at least one liquid cooler , at least one condenser , a purge unit , and a refrigerant; wherein said compressor is a centrifugal compressor and said refrigerant comprises 1-chloro-3 ,3 ,3-trifluoropropene , and where in the 1-chloro-3 ,3 ,3-trifluoropropene comprises greater than 70 wt % the trans-isomer.2. The chiller system of wherein said compressor is a centrifugal compressor.3. The chiller system of wherein said compressor is a multistage compressor.4. The chiller system of wherein said multistage compressor is a centrifugal compressor with 2 or 3 stages.5. The chiller system of wherein said compressor is an oil-free compressor.6. The chiller system of wherein said liquid cooler is a flooded evaporated.7. The chiller system of wherein said compressor contains a lubricant.8. The chiller system of wherein said at least one condenser comprises at least one water-cooled condenser.9. The chiller system of wherein said at least one condenser comprises at least one air-cooled condenser.10. The chiller system of wherein one of said at least one condensers of the chiller system is operated at temperatures ranging from about 26.7° C. (80° F.) to 60° C. (140° F.).11. The chiller system of wherein said chiller system is a heat recovery chiller system.12. The heat recovery chiller system of wherein heat is recovered from water leaving said at least one water-cooled condenser.13. The heat recovery chiller system of wherein heat is recovered ...

Подробнее
Номер записи: 90
01-02-2018 дата публикации

HEAT TRANSFER METHODS, SYSTEMS AND COMPOSITIONS

Номер: US20180030325A1
Автор: PETERSEN Michael, POTTKER Gustavo, SETHI Ankit, SMITH Gregory Laurence, VERA BECERRA ELIZABET del CARMEN, Yana Motta Samuel F., ZOU Yang
Принадлежит:

Disclosed are refrigerants comprising at least about 97% by weight of a blend of three compounds, said blend consisting of: 1. A refrigerant comprising at least about 97% by weight of a blend of three compounds , said blend consisting of:from about 38% by weight to about 48% by weight difluoromethane (HFC-32),from about 6% by weight to about 12% by weight pentafluoroethane (HFC-125),{'sub': '3', 'from about 33% by weight to about 41% by weight trifluoroiodomethane (CFI) and'}from about 2% by weight to about 16% by weight 2,3,3,3-tetrafluoropropene (HFO-1234yf)wherein the percentages are based on the total weight of the three compounds in the blend.2. The refrigerant of wherein said blend consists of:from about 46% by weight to about 48% by weight difluoromethane (HFC-32),from about 11% by weight to about 12% by weight pentafluoroethane (HFC-125),{'sub': '3', 'from about 34% by weight to about 36% by weight trifluoroiodomethane (CFI) and'}from about 5% by weight to about 7% by weight 2,3,3,3-tetrafluoropropene (HFO-1234yf)wherein the percentages are based on the total weight of the three compounds in the blend.3. The refrigerant of wherein said blend consists of:about 47% by weight difluoromethane (HFC-32),about 12% by weight pentafluoroethane (HFC-125),{'sub': '3', 'about 35% by weight trifluoroiodomethane (CFI) and'}about 6% by weight 2,3,3,3-tetrafluoropropene (HFO-1234yf)wherein the percentages are based on the total weight of the three compounds in the blend.4. The refrigerant of wherein the refrigerant comprises at least about 98.5% by weight of said blend.5. The refrigerant of wherein the refrigerant comprises at least about 99.5% by weight of said blend.6. The refrigerant of wherein the refrigerant consists essentially of said blend.7. The refrigerant of wherein the refrigerant consists of said blend.8. The refrigerant of wherein the weight ratio of (HFC-32+HFO-1234yf):(CF3I+HFC-125) is from greater than about 1:1 to less than 1.2:1.9. The refrigerant of ...

Подробнее
Номер записи: 91
01-02-2018 дата публикации

ELECTRIC COMPRESSOR

Номер: US20180030972A1
Автор: Terazawa Junichirou
Принадлежит: Calsonic Kansei Corporation

When a power switching element brought into contact with a contact part formed at a back side of a suction refrigerant passage is cooled by refrigerant that has been sucked in through a suction port and that is passing through the suction refrigerant passage, high-temperature, high-pressure refrigerant flowing in from a compression chamber to a suction chamber is prevented from flowing back by a check valve. Therefore, there is always low-temperature, low-pressure refrigerant in the suction refrigerant passage, and the power switching element can be efficiently cooled by the refrigerant in the suction refrigerant passage. 1. An electric compressor which drives a compression mechanism for a refrigerant driven by the electric motor , the electric compressor comprising:a main housing housing the compression mechanism and the electric motor;a circuit housing housing a driving circuit of the electric motor, and is partitioned from the main housing by a partition wall;a suction refrigerant passage arranged on one surface of the partition wall exposed to the main housing and formed such that the refrigerant flowing into the suction refrigerant passage from an outside of the main housing through a suction port is sucked to an inside of the main housing through a refrigerant outlet;a check valve arranged in the suction refrigerant passage and configured to prevent the refrigerant from flowing backward from the refrigerant outlet toward the suction port in the suction refrigerant passage; anda power switching element contacted with a contact part in the other surface of the partition wall exposed to the circuit housing, the contact part opposed to a part of the suction refrigerant passage at a side of the suction port with respect to the check valve.2. The electric compressor according to claim 1 , wherein the check valve comprises a valve body movable along a passing direction of the refrigerant in the suction refrigerant passage; a valve seat member having a valve seat part ...

Подробнее
Номер записи: 92
01-02-2018 дата публикации

CLOSED LOOP SOLAR REFRIGERATION SYSTEM

Номер: US20180031286A1
Автор: EL-SHAARAWI MAGED AHMED
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A solar-thermal refrigerant compression system employing refrigerants, such as R410a and R500, and a method of employing the system in refrigeration and air-conditioning units. The system includes a refrigerant storage tank, an evaporator, a mixing chamber, a condenser and an isochoric thermal compressor comprising a condensate heat exchanger and a heating coil connected to a solar collector field. 1: A solar refrigeration system comprising:a refrigerant storage tank, which stores a refrigerant liquid, wherein the storage tank is fluidly connected to a first conduit, a second conduit, and an inlet;a finned evaporator, which receives and evaporates a first portion of the refrigerant liquid from the refrigerant storage tank to form a refrigerant vapor;a mixing chamber, which receives the refrigerant vapor from the evaporator and a second portion of the refrigerant liquid from the refrigerant storage tank through the second conduit, wherein the refrigerant vapor and the second portion of the refrigerant liquid are mixed in the mixing chamber to form a mixture;wherein the first conduit consists of a plurality of check valves and a first throttle valve, wherein the first throttle valve regulates a volume of the second portion of the refrigerant liquid flowing to the mixing chamber;an isochoric thermal compressor comprising a condensate heat exchanger and a heating coil fluidly connected to a solar collector field, wherein the isochoric thermal compressor receives the mixture from the mixing chamber and compresses the mixture by heating the mixture to form a compressed refrigerant; anda condenser, which is located between the isochoric thermal compressor and the refrigerant storage tank, wherein the condenser receives and condenses the compressed refrigerant to form a condensate that flows through the condensate heat exchanger to the inlet of the refrigerant storage tank;wherein the condenser, the isochoric thermal compressor, the refrigerant storage tank, the finned ...

Подробнее
Номер записи: 93
05-02-2015 дата публикации

MODULAR REFRIGERATION AND HEAT RECLAMATION CHILLER

Номер: US20150033771A1
Автор: Meade Alexander J., Meade John P.
Принадлежит:

The present technology provides a modular refrigeration and heat reclamation chiller system comprising an evaporator configured to vaporize a refrigerant to cool the refrigerant, a compressor coupled to the evaporator and configured to compress the refrigerant, a condenser coupled to the compressor and configured to condense the refrigerant compressed by the compressor, a sub-cooler coupled to the condenser and configured to receive the refrigerant from the condenser so as to selectively extract heat from the refrigerant and to transfer the refrigerant to the evaporator, and an expansion valve coupled to both the sub-cooler and the evaporator. 1. A modular refrigeration and heat reclamation chiller system comprising:an evaporator configured to vaporize a refrigerant to cool the refrigerant;a compressor coupled to the evaporator and configured to compress the refrigerant;a condenser coupled to the compressor and configured to condense the refrigerant compressed by the compressor;a sub-cooler coupled to the condenser and configured to receive the refrigerant from the condenser so as to selectively extract heat from the refrigerant and to transfer the refrigerant to the evaporator; andan expansion valve coupled to both the sub-cooler and the evaporator.2. The system of claim 1 , wherein the condenser claim 1 , the evaporator claim 1 , and the expansion valve each have a refrigerant capacity claim 1 , the refrigerant capacities of all of the condenser claim 1 , the evaporator claim 1 , and the expansion valve are greater than the refrigerant capacity of the compressor.3. The system of claim 2 , wherein the refrigerant capacity of the condenser claim 2 , evaporator claim 2 , sub-cooler claim 2 , and expansion valve produce a compression ratio of less than about 6:1 relative to the compressor.4. The system of claim 2 , wherein the refrigerant capacity of the condenser claim 2 , evaporator claim 2 , sub-cooler claim 2 , and expansion valve produce a compression ratio of ...

Подробнее
Номер записи: 94
17-02-2022 дата публикации

AIR CONDITIONER AND COMPRESSOR

Номер: US20220049701A1
Автор: HU Yanjun, MIAO Wang, QUE Peizhen, XIANG Liu, ZHAI Yuanbin
Принадлежит: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI

The present disclosure relates to an air conditioner and a compressor. The compressor includes: a first cylinder assembly, including a first cylinder body and a first sliding vane, a volume control assembly, including a pressure regulator; wherein the pressure regulator is provided with a storage cavity, and the storage cavity is communicated with the variable volume control cavity; wherein the first sliding vane is configured to slide in a reciprocating manner between the first compression cavity and the variable volume control cavity along the first sliding vane groove, to change the volume of the variable volume control cavity; and the refrigerant introduced into the variable volume control cavity flows between the variable volume control cavity and the storage cavity along with a change of the volume of the variable volume control cavity. 1. A compressor , comprising:a first cylinder assembly, comprising a first cylinder body and a first sliding vane, wherein the first cylinder body is provided with a first compression cavity, a variable volume control cavity and a first sliding vane groove, and the first sliding vane groove communicates the first compression cavity with the variable volume control cavity, the first sliding vane is slidably arranged in the first sliding vane groove, and a part of the first sliding vane being configured to extend into the first compression cavity, and another part of the first sliding vane being configured to extend into the inside of the variable volume control cavity; anda variable volume control assembly, comprising a pressure regulator; wherein the pressure regulator is provided with a storage cavity, the storage cavity being configured to accommodate refrigerant, and the storage cavity is communicated with the variable volume control cavity; andwherein the first sliding vane is so configured that when the first sliding vane slides along the first sliding vane groove the size of the another part extending into the variable ...

Подробнее
Номер записи: 95
31-01-2019 дата публикации

SCROLL COMPRESSOR SHAFT

Номер: US20190032664A1
Автор: BENCO Michael G., Crum Daniel R., Hansen George, Raymond Kenneth Andrew
Принадлежит:

A crankshaft assembly for a scroll compressor is disclosed. The crankshaft assembly includes a crankpin having a plurality of apertures therethrough. A crankshaft body has an aperture therethrough. The aperture of the crankshaft and one of the plurality of apertures of the crankpin being aligned when in an assembled state such that in operation fluid flows between the aperture of the crankshaft body and the one of the plurality of apertures of the crankpin. The crankshaft body includes a second aperture aligned with a second of the plurality of apertures of the crankpin. The crankpin and the crankshaft body are separate members. A fastener extends through the second of the plurality of apertures of the crankpin and into the second aperture of the crankshaft body to secure the crankpin and the crankshaft body together in the assembled state. 1. A crankshaft assembly for a scroll compressor , comprising:a crankpin having a plurality of apertures therethrough;a crankshaft body having an aperture therethrough, the aperture of the crankshaft and one of the plurality of apertures of the crankpin being aligned when in an assembled state such that in operation fluid flows from the aperture of the crankshaft body and the one of the plurality of apertures of the crankpin, the crankshaft body including a second aperture, the second aperture of the crankshaft body being aligned with a second of the plurality of apertures of the crankpin, wherein the crankpin and the crankshaft body are separate members; anda fastener, extending through the second of the plurality of apertures of the crankpin and into the second aperture of the crankshaft body to secure the crankpin and the crankshaft body together in the assembled state.2. The crankshaft assembly according to claim 1 , further comprising a plurality of aligning members and a plurality of alignment apertures in the crankpin and the crankshaft body to align the crankpin and the crankshaft body when assembling the crankshaft ...

Подробнее
Номер записи: 96
31-01-2019 дата публикации

IONIC FLUID / CO2 COFLUID REFRIGERATION SYSTEM

Номер: US20190032967A1
Автор: Bhatia Akash, Maule Cassio Ricardo Naidhig, Morrison Douglas T., Quiroz-Guzman Mauricio, Real Marcelo Alexandre
Принадлежит:

A refrigerant system uses a cofluid of ionic liquid and COas a working fluid, and is adapted to selectively bind and release COmolecules from the ionic fluid in exothermic and endothermic processes, respectively. The refrigerant system includes a hermetic compressor which acts as a pump for the substantially uncompressible liquid working fluid. The compressor includes electrical components (such as the electric motor and various wires and connectors) which are electrically isolated from the working fluid in order to prevent electrical shorts caused by the conductive ionic fluid. At the same time, the ionic liquid may act as a lubricating fluid for the compressor components, eliminating any need for separate working and lubricating fluids. 1. A refrigeration system comprising:a compressor having a housing and an electric motor hermetically sealed within the housing;a condenser;an expansion valve;an evaporator; anda quantity of working fluid comprising an electrically conductive ionic liquid and carbon dioxide, the working fluid circulatable through a series of fluid conduits interconnecting the compressor, the condenser, the evaporator and the expansion valve.2. The refrigeration system of claim 1 , wherein the compressor raises a pressure of the quantity of working fluid to 50 bar or less.3. The refrigeration system of claim 1 , further comprising a lubrication system having a lubrication inlet within the housing of the compressor and a lubrication outlet in fluid communication with the electric motor claim 1 , such that the lubrication system circulates the working fluid around moving parts of the electric motor.4. The refrigeration system of claim 3 , wherein the working fluid is accumulated in a sump region at the bottom of the housing claim 3 , and the lubrication system comprises a suction tube having a lower end submerged in the quantity of working fluid in the sump region claim 3 , the suction tube operable to draw the ionic liquid of the working fluid into ...

Подробнее
Номер записи: 97
31-01-2019 дата публикации

REFRIGERANT COMPRESSOR AND FREEZING APPARATUS USING SAME

Номер: US20190032971A1
Автор: ISHIDA Yoshinori, Oyagi Shingo
Принадлежит:

Refrigerant compressor includes electromotive element, and compression element that is driven by electromotive element, includes a slider, and compresses a refrigerant. Freezer oil that lubricates the slider is added with fullerene having a diameter that ranges from 100 pm to 10 nm. 1. A refrigerant compressor comprising:an electromotive element; anda compression element that is driven by the electromotive element, includes a slider, and compresses a refrigerant,wherein a freezer oil that lubricates the slider is added with a fullerene having a diameter that ranges from 100 pm to 10 nm.2. The refrigerant compressor according to claim 1 , wherein one of a C60 fullerene, a C70 fullerene, and a higher-order fullerene including a larger number of carbons than a number of carbons of the C70 fullerene; or', 'a mixed fullerene obtained by mixing at least two of the C60 fullerene, the C70 fullerene, and the higher-order fullerene., 'the fullerene is3. The refrigerant compressor according to claim 1 , wherein a shape of the fullerene is spherical or elliptic.4. The refrigerant compressor according to claim 1 , wherein an additive amount of the fullerene is less than or equal to a saturating amount of dissolution with respect to the freezer oil.5. The refrigerant compressor according to claim 1 , whereinthe refrigerant compressed by the compression element is a hydrofluorocarbon (HFC) refrigerant or a mixed refrigerant including the HFC refrigerant, and one of ester oil, alkylbenzene oil, polyvinyl ether, and polyalkylene glycol; or', 'mixed oil of at least two of the ester oil, the alkylbenzene oil, the polyvinyl ether, and the polyalkylene glycol., 'the freezer oil is6. The refrigerant compressor according to claim 1 , wherein one natural refrigerant of R600a, R290, and R744; or', 'a mixed refrigerant that includes at least one of the R600a, the R290, and the R744, and, 'the refrigerant compressed by the compression element is one of mineral oil, ester oil, alkylbenzene oil ...

Подробнее
Номер записи: 98
30-01-2020 дата публикации

COMPRESSOR INCLUDING TERMINAL PROTECTION STRUCTURE

Номер: US20200032792A1
Автор: HARA Kazuyuki, KINOSHITA Satomi, KOJIMA Kouji, MIZUGUCHI Tomoko, NAKAMURA Souichi, SHINOHARA Yoshihiro, Sugiyama Toru
Принадлежит:

A compressor () includes a casing (), a terminal () protruding from the casing, a first cover () covering the terminal, and a second cover () covering the first cover. 110. A compressor () comprising:{'b': '20', 'a casing ();'}{'b': '29', 'a terminal () protruding from the casing;'}{'b': '50', 'a first cover () covering the terminal; and'}{'b': '70', 'a second cover () covering the first cover.'}2. The compressor according to claim 1 ,wherein the first cover includes resin, and the second cover includes metal.3. The compressor according to claim 1 ,{'b': 1', '2, 'wherein a differential volume (CD) obtained by subtracting a first volume (C), which is a volume of the first cover, from a second volume (C), which is a volume of the second cover, is larger than the first volume.'}4. The compressor according to claim 1 ,{'b': '75', 'wherein a flame-extinguishing member () is provided on an inner surface of the second cover.'}5. The compressor according to claim 1 ,{'b': 51', '52, 'wherein the first cover includes a first opening side surface () in which a first opening () for passing a lead wire is formed, and'}{'b': 71', '72, 'the second cover includes a second opening side surface () in which a second opening () for passing the lead wire is formed.'}6. The compressor according to claim 5 ,{'b': '73', 'wherein the second opening is provided with a seal material () that restrains flow of air passing through the second opening.'}7. The compressor according to claim 5 ,wherein the first opening side surface and the second opening side surface do not face each other.8. The compressor according to claim 7 ,wherein the first opening side surface and the second opening side surface are not parallel to each other.9. The compressor according to claim 5 ,wherein the first opening side surface and the second opening side surface face each other.10. The compressor according to claim 5 ,wherein the first opening has an area larger than an area of the second opening.11. The compressor ...

Подробнее
Номер записи: 99
30-01-2020 дата публикации

Electromechanical actuators for refrigerant flow control

Номер: US20200032813A1
Автор: Delvis Anibal GONZALEZ, Mogens Rasmussen
Принадлежит: Danfoss AS

An actuator assembly includes a first actuator, a second actuator, and a moving piece that is disposed between the first actuator and the second actuator. The moving piece is positionable to close a gap in the compressor.

Подробнее
Номер записи: 100