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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 6245. Отображено 100.
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.

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Номер записи: 1
27-09-2012 дата публикации

Counterweight incorporated into slider block for scroll compressor

Номер: US20120244026A1
Автор: Gregory W. Hahn, Patrice Bonnefoi, Ravi Mantrala
Принадлежит: Individual

A slider block has an inner bore which receives an eccentric pin, and a generally flat drive surface over a limited circumferential extent to be engaged by a flat drive surface on an eccentric pin. A counterweight is positioned on an outer periphery of the slider block. The counterweight has a center line defining a first plane. A second plane is defined parallel to the first plane, with the second plane including a point on the flat drive surface of the slider block, with the flat drive surface of the slider block including a third plane, and a non-zero angle defined between the second and third planes.

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Номер записи: 2
08-11-2012 дата публикации

Compressor and enclosure assembly for electrical components

Номер: US20120282124A1
Автор: Anne Dariene Powell, George A. Clark, Kenneth J. Monnier, Larry I. Bingham, Matthew Paul Dunn, Stephen Shotaro Sakai
Принадлежит: Emerson Climate Technologies Inc

A compressor electrical component enclosure may include a base and a lid. The base may include first and second opposing surfaces and a magnet. The magnet may be coupled to the second surface and may secure the base to a compressor shell. The lid may engage the base and cooperate with the base to define an electrical component housing.

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Номер записи: 3
29-11-2012 дата публикации

Compressor and Refrigerating Cycle Apparatus

Номер: US20120301334A1
Автор: Baiying Huang, Hiroyasu Yoneyama, Kazuo Sakurai
Принадлежит: Hitachi Appliances Inc

In a conventional compressor, since a motor and a mechanical section of the compressor are disposed in one and the same closed container, the motor is exposed to high-temperature coolant and heated, and the efficiency of the motor is lowered. Further, during the operation of the compressor, the coolant circulating in the refrigerating cycle conveys additional heat generated by the motor coil. Thus the efficiency of the refrigerating cycle is lowered. The compressor according to the present invention includes a compression chamber divided into a closed chamber and an open chamber separated by a magnetic induction plate from each other. The closed chamber is filled with high temperature and pressure coolant and the rotor of the motor is disposed in the closed chamber, and the stator of the motor is disposed in the open chamber.

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Номер записи: 4
02-05-2013 дата публикации

SCROLL COMPRESSOR

Номер: US20130108496A1
Автор: Iida Noboru, Karino Tsuyoshi, Nakai Hiroaki, Ohno Ryuichi, Oyagi Shingo, Yoshida Hirofumi
Принадлежит: Panasonic Corporation

A scroll compressor employs therein a refrigerant having a small global warming potential and a small ozone depletion potential and mainly comprising hydrofluoroolefin having a carbon-carbon double bond. A stationary scroll has and end plate and a discharge port defined in the end plate at a central portion thereof so as to open into a discharge chamber. The stationary scroll also has a bypass hole defined in the end plate to allow a plurality of compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port. A check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge chamber. This construction can restrain a baneful influence on the global environment, reduce a temperature increase caused by excessive compression, and restrain decomposition of the refrigerant even in long-term use. 1. A scroll compressor employing therein a single-component refrigerant mainly comprising hydrofluoroolefin having a carbon-carbon double bond or a mixture refrigerant containing this refrigerant , the scroll compressor comprising:a stationary scroll having a stationary end plate and a stationary scroll wrap rising up from the stationary end plate, the stationary end plate having a discharge port defined therein at a central portion thereof so as to open into a discharge chamber; andan orbiting scroll having an orbiting end plate and an orbiting scroll wrap rising up from the orbiting end plate, the orbiting scroll being held in engagement with the stationary scroll to define a plurality of compression chambers therebetween, whereinthe stationary end plate has a bypass hole defined therein to allow the compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port, anda check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge ...

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Номер записи: 5
23-05-2013 дата публикации

TWO-STAGE MEDIUM-PRESSURE SCREW-TYPE AIR COMPRESSOR SET

Номер: US20130129548A1
Автор: Chen Gang, Wang Leijie, Wu Changhong, Wu Jiangwei, Yin Xibo, Zhang Jiongyan, Zhuang Zhongping
Принадлежит: NINGBO BAOSI ENERGY EQUIPMENT CO.,LTD

A two-stage medium-pressure screw air compressor comprises a primary screw compressor () and a secondary screw compressor () communicating with the gas-liquid separator () via the first gas-liquid inlet (). A first oil outlet () is connected to a mid section of a gas-liquid separator (). The oil is injected into the lubricating components of the compressor is the first oil outlet (), a first filter (). A secondary oil-water separator () is connected to the first oil outlet () of the gas-liquid separator (), the second oil-water separator () has an upper separating tank () and a lower separating tank. The water and the impurities contained in the lubricating oil can be eliminated at a largest extent, so as to create essential condition thr ensuring the screw compressor to operate continuously, stably and safely and provide high operational reliability, safety and long service life. 1. A two-stage medium-pressure screw air compressor , comprising:a primary screw compressor driven by a motor;a secondary screw compressor also driven by the motor;a gas-liquid separator having a side wall with a first gas-liquid inlet connected to the side wall and a first oil outlet connected to a mid section of the side wall, the secondary screw compressor communicating with the gas-liquid separator via the first gas-liquid inlet;{'sub': ':', 'a plurality of oil distributors for receiving processed oil from the gas-liquid separator via the first oil outlet, a first filtera cooler and an oil tube;'}a secondary oil-water separator connected to the first oil outlet of the gas-liquid separator, the secondary oil-water separator having an upper separating tank with a top and a bottom and a lower separating tank with a top and a bottom, a plurality of brackets being mounted on the lower separating tank and the upper separating tank being mounted on top of the plurality of brackets;a second oil inlet connecting to the top of the upper separating tank, the second oil inlet having an ...

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Номер записи: 6
20-06-2013 дата публикации

Oil injection device for variable-speed scroll refrigeration compressor

Номер: US20130156612A1
Автор: Dong Wang, Ingrid CLAUDIN, Patrice Bonnefoi, Pierre Ginies
Принадлежит: Danfoss Commercial Compressors SA

The oil injection device according to the invention includes an oil pump designed to be rotationally coupled to the electric motor of a compressor and including inlet and outlet ports, an oil injection duct connected to the first outlet port and designed to supply a compression stage of the compressor with oil, and an oil return duct connected to the first outlet port and designed to return the oil into an oil sump of the compressor. The pressure losses in the oil injection duct are primarily singular pressure losses proportional to the square of the oil flow rate passing through the oil injection duct. The pressure losses in the oil return duct are primarily pressure losses due to friction proportional to the oil flow rate passing through the oil return duct.

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Номер записи: 7
08-08-2013 дата публикации

MOTOR-DRIVEN COMPRESSOR

Номер: US20130202463A1
Автор: ENAMI Shingo, Fujii Akio
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven compressor includes a connector receiving portion provided on the outer surface of a housing. A wiring connection portion is provided in the connector receiving portion and supplies electricity from an external power source to a motor drive circuit. An insulating member provided inside the connector receiving portion insulates the wiring connection portion and the connector receiving portion from each other. An electrical wire is arranged between the inner surface of the connector receiving portion and the insulating member. The electric wire is used for a purpose other than supply of electricity to the motor drive circuit. A recess is formed in at least one of the inner surface of the connector receiving portion and the outer surface of the insulating member. The recess forms a wiring space, in which the electrical wire is arranged, between the connector receiving portion and the insulating member. 1. An motor-driven compressor comprising:a housing;a compression portion, an electric motor, and a motor drive circuit, which are accommodated in the housing;a connector receiving portion provided on an outer surface of the housing;a wiring connection portion provided in the connector receiving portion, the wiring connection portion being adapted for supplying electricity from an external power source to the motor drive circuit;an insulating member provided inside the connector receiving portion, the insulating member insulating the wiring connection portion and the connector receiving portion from each other; andan electrical wire located between an inner surface of the connector receiving portion and an outer surface of the insulating member, the electrical wire being used for a purpose other than supply of electricity to the motor drive circuit from the external power source, whereina recess is formed in at least one of the inner surface of the connector receiving portion and the outer surface of the insulating member, andthe recess forms a wiring space ...

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Номер записи: 8
29-08-2013 дата публикации

HERMETICALLY SEALED ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE

Номер: US20130219952A1
Автор: Aoki Toshimasa, SATODATE Koji, TAKASHIMA Kazu
Принадлежит: TOSHIBA CARRIER CORPORATION

The height measured from the bottom surfaces of support legs is set to be 2.5 or more times as great as the outer diameter of the compressor body, the height of the center of gravity measured from the bottom surfaces of the support legs to the center of gravity is set to be ½ or less the overall height, and the support legs are provided in number of four, based on the fulfillment of Rc/cosθ Подробнее

Номер записи: 9
12-09-2013 дата публикации

Compressor unit including gear rotor and compressor system using the same

Номер: US20130236345A1
Автор: Gobee KIM, Wookyun KIM, Yubee KIM
Принадлежит: Individual

A compressor unit having a gear rotor, and a compressor system using the same are provided. The compressor system includes a compressor unit having a triple trochoidal rotor, which includes a first rotor, a second rotor, a third rotor, a casing, second and first suction ports, and second and first discharge ports; and a driving unit that rotates the three rotors such that external working fluid is sucked into the suction port and the working fluid sucked into the suction port is discharged to the discharge port in a state of being compressed. The compressor unit may be constructed as a triple trochoidal rotor such that working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure and provide a high-speed, high-pressure compression capability.

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Номер записи: 10
26-09-2013 дата публикации

Compressor

Номер: US20130251548A1
Автор: Akihiro Nakashima, Akio Saiki, Masakazu Obayashi, Masami Ohno, Shinichi Sato
Принадлежит: Toyota Industries Corp

A compressor includes a housing, compression unit, discharge chamber, outlet, and oil separation structure. The oil separation structure, which is arranged between the discharge chamber and the outlet, includes an oil reservoir, oil separation compartment, intake passage, exhaust passage, and supply passage. The oil separation compartment is located upward from the oil reservoir. The intake passage, which extends upward from the oil separation compartment, draws refrigerant gas into the oil separation compartment from the discharge chamber to separate lubrication oil from the refrigerant gas. The exhaust passage extends upward from the oil separation compartment and discharges the refrigerant gas in the oil separation compartment out of the housing through the outlet. The supply passage extends upward from the oil separation compartment and has a larger cross-sectional area than the intake passage. The supply passage supplies the oil reservoir with lubrication oil from the oil separation compartment.

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Номер записи: 11
31-10-2013 дата публикации

COMPRESSED GAS SUPPLY UNIT

Номер: US20130287592A1
Автор: Kobayashi Kenichi, UNAMI Atsushi
Принадлежит:

A compressed gas supply unit has scroll compressors. Gas discharged from the scroll compressors travels through a main supply passage and is reserved in a reservoir tank, after which the gas is supplied to a gas recipient from a supply passage. The scroll compressors include inverter devices that allow for independent modulation of the speeds of respective drive motors. The controller includes a speed range setting unit that sets an upper speed limit and a lower speed limit of the scroll compressors, a speed sum calculating unit that calculates a sum of speeds of the scroll compressors based on a load of the compressed gas supply unit, and a speed setting unit that allocates the calculated sum of speeds among the scroll compressors to set speeds for scroll compressors respectively. 1. A compressed gas supply unit , comprising: a plurality of scroll compressors , an inverter device allowing independent modulation of speeds of the respective scroll compressors , a merge pipe or a reservoir tank for collecting gas discharged from the plurality of scroll compressors , a pressure sensor detecting discharge pressure of the plurality of scroll compressors , and a controller controlling the inverter device for modulating the speeds of the respective scroll compressors ,the controller including a speed range setting unit that sets an upper speed limit and a lower speed limit of the plurality of scroll compressors, a calculating unit that calculates a sum of speeds of the plurality of scroll compressors based on a load of the compressed gas supply unit, and a speed setting unit that allocates the calculated sum of speeds among the scroll compressors to set speeds for the respective scroll compressors, whereinwhen the sum of speeds calculated by the calculating unit is lower than a sum of upper speed limits of all the scroll compressors, the speed setting unit reduces the speed of a first scroll compressor by a first difference between the calculated sum of speeds and the sum ...

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Номер записи: 12
31-10-2013 дата публикации

Refrigerant Compressor

Номер: US20130287618A1
Автор: Ishikawa Tsutomu, Morita Yujiro, Taguchi Yukihiko
Принадлежит:

Oil recirculation mechanism includes an oil separation portion (separation chamber , separation pipe ) for separating oil from a discharged refrigerant, oil storage chamber for storing the separated oil, oil return passage through which the oil storage chamber communicates with the suction chamber , and orifice with a filter. The oil storage chamber extends in a diametric direction of a compressor housing and has an open end at an outer face of the housing, and the open end is occluded by an occluding member. A partition wall (bulge portion ), that separates the oil storage chamber from the suction chamber , is disposed in a region more inside than the opening of the open end. An oil return passage is linearly formed through the partition wall and the orifice with a filter is accommodated and positioned in the oil return passage. 1. A refrigerant compressor which includes:a compressing mechanism that compresses a refrigerant drawn from an external refrigerant circuit and discharges the compressed refrigerant; andan oil recirculation mechanism that separates a lubrication oil from the refrigerant discharged from the compressing mechanism and returns the lubrication oil to a suction pressure region of the compressing mechanism,the oil recirculation mechanism comprising:an oil separation portion for separating an oil from the discharged refrigerant;an oil storage chamber for storing the oil separated by the oil separation portion;an oil return passage through which the oil storage chamber communicates with the suction pressure region; anda depressurizing device provided in the oil return passage,wherein the oil storage chamber extends in a diametric direction of a compressor housing and has an open end at an outer face of the housing, and the open end is occluded by an occluding member;wherein a partition wall, that separates the oil storage chamber from the suction pressure region, is disposed in a region more inside than the opening of the open end;wherein a through- ...

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Номер записи: 13
21-11-2013 дата публикации

Compressor having a lower frame and a method of manufacturing the same

Номер: US20130309117A1
Автор: Kiuk LEE, Nara Han, Suchul Kim
Принадлежит: LG ELECTRONICS INC

A compressor having a lower frame and a method of manufacturing the same are disclosed. The compressor may include a cylindrical shell, a rotational shaft rotatably mounted in the cylindrical shell, a rotor and a stator that rotates the rotational shaft, a compression device driven by the rotational shaft, a lower bearing configured to rotatably support one side of the rotational shaft, a lower frame configured to support the lower bearing, the lower frame being configured to be press-fitted into a lower end portion of the cylindrical shell, and a base configured to seal the lower end portion of the cylindrical shell. The lower frame may include a main body configured to be press-fitted onto an inner circumferential surface of the cylindrical shell and a flange that extends from the main body, the flange being configured to limit a press-fit depth by contacting the lower end portion of the cylindrical shell.

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Номер записи: 14
21-11-2013 дата публикации

Scroll refrigeration compressor

Номер: US20130309118A1
Автор: Dominique Gross, Jean-Francois LE COAT, Patrick Jallat, Pierre Ginies, Stephane Watts
Принадлежит: Danfoss Commercial Compressors SA

The scroll compressor includes stationary and moving scrolls each including a scroll plate provided with a spiral wrap, the spiral wraps defining the variable-volume compression chambers, a separating plate mounted on the scroll plate of the stationary scroll and defining with the latter a first intermediate volume, and a delivery chamber defined by the separating plate and the sealed casing. The compressor includes a bypass passage arranged to communicate the first intermediate volume with an intermediate compression chamber, a flow passage arranged to communicate the first intermediate volume with the delivery chamber, and a bypass valve associated with the flow passage, each bypass valve associated with a flow passage mounted on the surface of the separating plate turned toward the delivery chamber and movable between closing and opening positions for closing and opening the flow passage.

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Номер записи: 15
05-12-2013 дата публикации

Thrust plate for a horizontal scroll compressor and a horizontal scroll compressor having the same

Номер: US20130323105A1
Автор: Chao Jiang, Linzhi Chao, Shuichong Fan
Принадлежит: Emerson Climate Technologies Inc

A thrust plate for a compressor may include first and second ends and a feed hole. The first end may include a thrust surface. The second end may include a lubricant accumulation feature. The feed hole may extend between the lubricant accumulation feature and the thrust surface to provide communication therebetween. The feed hole may be angled relative to a longitudinal axis of the thrust plate such that lubricant flows through the feed hole from the lubricant accumulation feature to the thrust surface.

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Номер записи: 16
12-12-2013 дата публикации

MOTOR-DRIVEN COMPRESSOR

Номер: US20130330217A1
Автор: ENAMI Shingo, Fujii Akio, Fukutani Yoshikazu, Hamanaka Takeshi, Yamaguchi Tsuyoshi
Принадлежит:

A motor-driven compressor includes a compression unit, an electric motor, a housing that includes an accommodating chamber and a wiring connection port, a motor driving circuit that includes a substrate arranged in the accommodating chamber, wiring electrically connected to the substrate and extending out of the housing through the wiring connection port, and a resin sealing member fitted to the wiring connection port. The wiring includes a primary conductor, which has a first end connected to the substrate and a second end, and a secondary conductor, which is connected to the second end of the primary conductor and arranged outside the housing. The secondary conductor includes a wire portion and a sheath that is made of an insulating material and covers the wire portion. The sealing member covers the sheath and a junction between the primary conductor and the secondary conductor. 1. A motor-driven compressor comprising:a compression unit that performs a compression operation;an electric motor that drives the compression unit;a housing that accommodates the compression unit and the electric motor and includes an accommodating chamber and a wiring connection port, which communicates the accommodating chamber and the exterior of the housing;a motor driving circuit that controls driving of the electric motor and includes a substrate, which is arranged in the accommodating chamber;wiring electrically connected to the substrate and extending out of the housing through the wiring connection port; anda resin sealing member fitted to the wiring connection port, whereinthe wiring includes a primary conductor, which has a first end connected to the substrate and a second end, and a secondary conductor, which is connected to the second end of the primary conductor and arranged outside the housing,the secondary conductor includes a wire portion and a sheath that is made of an insulating material and covers the wire portion, andthe sealing member covers the sheath and a junction ...

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Номер записи: 17
19-12-2013 дата публикации

ROOTS PUMP AND EXHAUST METHOD

Номер: US20130336828A1
Автор: OHTA TAKASHI
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a roots pump includes a first roots pump, a second roots pump, and a connection passage. The first roots pump includes a first casing which has a first pump chamber. The second roots pump includes a second casing which has a second pump chamber. The connection passage connects an exhaust hole which is provided in the first pump chamber to an intake hole which is provided in the second pump chamber. 1. A roots pump comprising:a first roots pump including a first casing which has therein a first pump chamber, a first gas transfer member which is disposed inside the first pump chamber and rotates so as to transfer a gas in a predetermined direction, and a first support member which supports the first gas transfer member;a second roots pump including a second casing which has therein a second pump chamber, a second gas transfer member which is disposed inside the second pump chamber and rotates so as to transfer a gas in a predetermined direction, and a second support member which supports the second gas transfer member; anda connection passage connecting an exhaust hole which is provided in the first pump chamber to an intake hole which is provided in the second pump chamber.2. The roots pump according to claim 1 , wherein in the connection passage claim 1 , a cross-sectional area perpendicular to a gas transfer direction decreases as it goes from the first roots pump toward the second roots pump.3. The roots pump according to claim 1 , whereinthe first casing, the first gas transfer member, and the first support member are formed of a material without corrosion resistance, andthe second casing, the second gas transfer member, and the second support member are formed of a material with corrosion resistance.4. The roots pump according to claim 1 , whereinthe first pump chamber has a plurality of pump chambers,the second pump chamber has a plurality of pump chambers, andthe connection passage is connected between a pump chamber constituting ...

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Номер записи: 18
26-12-2013 дата публикации

Scroll compressor

Номер: US20130343941A1
Автор: Byeongchul Lee, Byoungchan KIM, Cheolhwan Kim, Seheon Choi
Принадлежит: LG ELECTRONICS INC

A scroll compressor includes an oil recollecting pump for recollecting oil discharged from a shell, thus to effectively recollect oil discharged out of the compressor. A differential pressure hole is formed at a position where it communicates with compression chambers after a suction completion timing such that oil stored in an inner space of the shell can be supplied into the compression chambers using pressure difference between the high-pressure inner space of the shell and the low-pressure compression chambers, resulting in allowing oil to be smoothly supplied to a compression unit even during low-speed driving of the compressor and preventing beforehand an occurrence of a suction loss due to oil.

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Номер записи: 19
16-01-2014 дата публикации

SCROLL EXPANDER

Номер: US20140017104A1
Автор: Enokijima Fuminobu, Iguchi Masao, MORI Hidefumi, TAMARU Kojiro
Принадлежит:

A scroll expander includes a housing, a main port, a high-pressure chamber, an operation chamber, a low-pressure chamber, a subport, a valve portion, an actuator, and a drive shaft. The high-pressure and low-pressure chambers are separated by a partition wall. The main port draws working fluid in the high-pressure chamber into the operation chamber. The subport introduces the working fluid from the high-pressure chamber to the operation chamber so that the volume of the working fluid in the operation chamber is variable. The valve portion selectively opens and closes the subport. The actuator is arranged in the low-pressure chamber. The drive shaft extends through the partition wall and connects the actuator and the valve portion with each other. When the drive shaft is actuated by the actuator, the subport is selectively opened and closed by the valve portion. 1. A scroll expander comprising:a housing having an inner circumferential surface;a fixed scroll, which is accommodated in the housing and fixed to the inner circumferential surface of the housing;a moveable scroll, which is accommodated in the housing and arranged to face the fixed scroll;a high-pressure chamber formed in the housing, to which high-pressure working fluid is supplied;an operation chamber defined by the fixed scroll and the moveable scroll, in which working fluid introduced from the high-pressure chamber is expanded;a low-pressure chamber formed in the housing, to which working fluid that has been expanded and decompressed in the operation chamber is discharged;a partition wall that separates a space in the housing into the high-pressure chamber and the low-pressure chamber;a main port, which draws the working fluid in the high-pressure chamber into the operation chamber;a subport, which introduces the working fluid from the high-pressure chamber to the operation chamber so that a volume of the working fluid in the operation chamber is variable;a valve portion, which selectively opens and ...

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Номер записи: 20
23-01-2014 дата публикации

VANE ROTARY COMPRESSOR

Номер: US20140023538A1
Автор: Hong Seon Joo, Kwak Jung Myung, Lim Kweon Soo, Shin In Cheol
Принадлежит:

Disclosed herein is a vane rotary compressor in which a fluid such as a refrigerant is compressed, with the volume of a compression chamber being reduced during the rotation of a rotor. In addition, disclosed is a vane rotary compressor having a configuration such that a space between a cylinder and a housing is divided into a high-pressure chamber, from which a high-pressure refrigerant is discharged, and an oil storage chamber in which oil included in the refrigerant is separated and stored, and having an oil decompression structure using a gap between a rotor and a head portion. 1. A vane rotary compressor comprising:a hollow cylinder;a housing including a cylinder portion which is formed with a space portion to mount the cylinder, and a first head portion which is formed integrally with the cylinder portion so as to close one axial side of the cylinder portion;a second head portion to close the other axial side of the cylinder portion;a rotor which is mounted within the cylinder and rotates by the power of a drive source;a plurality of vanes which protrudes from an outer peripheral surface of the rotor toward an inner peripheral surface of the cylinder and divides a hollow portion of the cylinder into a plurality of compression chambers;a high-pressure chamber which is formed in one side of the housing, into which a high-pressure refrigerant compressed in each of the compression chambers is discharged, and which is formed with a discharge hole communicating with a discharge port; andan oil storage chamber which is formed in the other side of the housing and stores oil separated by an oil separation pipe provided at the discharge port.2. The vane rotary compressor according to claim 1 , wherein the high-pressure chamber includes a muffler space which is formed to protrude from one side of an outer peripheral surface of the cylinder portion claim 1 , and the discharge hole is formed at one side of the muffler space.3. The vane rotary compressor according to claim ...

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Номер записи: 21
23-01-2014 дата публикации

COMPRESSOR

Номер: US20140023542A1
Автор: ITO Tatsuya, KUROKI Kazuhiro, YAMASHITA Takuro, Yamazaki Jun
Принадлежит:

A compressor includes a housing having a discharge chamber into which compressed refrigerant gas is discharged, an oil separation chamber, a passage connecting between the discharge chamber and the oil separation chamber, and an outlet port through which the refrigerant gas passed through the oil separation chamber flows out of the housing; and a cylindrical oil separator provided in the oil separation chamber. The oil separator includes a large-diameter portion, a small-diameter portion, and an intermediate portion formed between the large-diameter portion and the small-diameter portion and tapered toward the small-diameter portion. Plural holes are formed in the periphery of the small-diameter portion of the oil separator. The passage is directed toward the small-diameter portion of the oil separator in such a manner that the refrigerant gas swirls around the small-diameter portion, so that the refrigerant gas from which lubricating oil is separated enters the oil separator through the hole. 1. A compressor , comprising:a housing having a discharge chamber into which compressed refrigerant gas is discharged, an oil separation chamber in which lubricating oil contained in the discharged refrigerant gas is separated, a passage connecting between the discharge chamber and the oil separation chamber, and an outlet port through which the refrigerant gas passed through the oil separation chamber flows out of the housing; anda cylindrical oil separator provided in the oil separation chamber and connected at one end to the outlet port, the oil separator including a large-diameter portion, a small-diameter portion having a smaller diameter than the large-diameter portion, and an intermediate portion formed between the large-diameter portion and the small-diameter portion and tapered toward the small-diameter portion,wherein plural holes are formed in the periphery of the small-diameter portion of the oil separator, and the passage is directed toward the small-diameter ...

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Номер записи: 22
06-02-2014 дата публикации

PUMPING ASSEMBLY FOR FEEDING OIL UNDER PRESSURE TO A USER

Номер: US20140037473A1
Автор: Bertagna Bruno, Gambetti Davide, Zambardi Roberto
Принадлежит: TRW Automotive Italia S.r.l.

A pumping assembly for feeding oil under pressure to a user is defined by a gear pump, which is actuated by an electric motor, and has a pair of gears, which are coupled to each other within a pump body, and are each provided with a respective plurality of teeth facing radially to a respective lateral surface of the pump body and axially to two recesses formed on two side elements of the pump body itself; the radial distance of the teeth from the respective lateral surface increasing in the direction of rotation of the gears around their own rotation axes. 1. Pumping assembly for feeding oil under pressure to a user , the pumping assembly comprising a gear pump , and an electric motor for actuating the gear pump; the gear pump comprising , in turn , two toothed members , which are coupled to each other , are assembled so as to rotate around respective rotation axes parallel to each other , and present respective teeth; and a pump body defining a containing chamber , which houses in its inside the two toothed members , presents , for each toothed member , a respective first lateral surface extending around , and at a given radial distance (Dr) from , the teeth of the respective toothed member , and is , furthermore , axially limited by two side elements parallel to each other and perpendicular to said rotation axes; the radial distance (Dr) increasing in the direction of rotation of the toothed members around respective rotation axes , and each side element being limited by a second lateral surface perpendicular to said rotation axes and facing the toothed members; wherein each side element presents , for each toothed member , a respective recess , which is formed on the relative second lateral surface , is facing the teeth of the respective toothed member , and is limited by a bottom wall arranged at a given axial distance from the teeth of the respective toothed member.2. Pumping assembly according to claim 1 , wherein the axial distance is constant in the ...

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Номер записи: 23
13-02-2014 дата публикации

COMPRESSOR AND CONTROL METHOD THEREOF

Номер: US20140044562A1
Автор: KIM Kyoung Rock, Lee Joon Hwan, LIM Byoung Guk
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A compressor capable of reducing oil foaming and reducing the waiting time taken until the heating of the compressor is completed, and a method of controlling the same, the method of controlling a compressor including sensing temperature of the oil in the compressor, if the temperature of the oil is below a reference temperature, performing a loss operation, in which an amount of heat radiation of the motor part is increased, while operating the motor part at a low speed, and if the temperature of the oil increases to be equal to or higher then reference temperature, performing an efficiency operation by converting an operation of the motor to a normal operation. 1. A method of controlling a compressor comprising a casing configured to accommodate refrigerant and oil while forming an accommodation space therein , a compressor part to compress refrigerant while being installed at an inside of the casing , a motor part installed at an inside of the casing to provide the compressing part with a driving force , and a sensor part having at least one temperature sensor , the method comprising:if an operation command is input, sensing temperature of the oil;if the temperature of the oil is below a reference temperature, performing a loss operation, in which an amount of heat radiation of the motor part is increased, while operating the motor part at a low speed; andif the temperature of the oil increases to be equal to or higher than the reference temperature, performing an efficiency operation by converting an operation of the motor to a normal operation.2. The method of claim 1 , wherein the at least one temperature sensor comprises:a first temperature sensor configured to sense temperature of the oil while being penetratively installed from an outside of the casing to an inside of the casing so as to make contact with the oil; anda second temperature sensor configured to sense temperature of the refrigerant being discharged from the casing while being installed at an ...

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Номер записи: 24
13-02-2014 дата публикации

Scroll compression device

Номер: US20140044572A1
Автор: Akihiro Hayashi, Katsuki Akuzawa, Kazuyoshi Sugimoto, Kenji Aida, Satoshi Iitsuka, Tsutomu Kon, Yasunori Kiyokawa, Yoshiaki Nagasawa, Yoshihiko Nagase
Принадлежит: Sanyo Electric Co Ltd

A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, a pickup 45 is connected to an oil supply path 41 extending in an up-and-down direction in the driving shaft 15, and intercommunication paths 38 B, 54 A through which lubrication oil scraped up by the pickup 45 and supplied to respective lubrication sites is returned to the lower side of the driving motor 13 are provided between the stator 37 and the spacer ring 38 or between the spacer ring 38 and the casing 3.

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Номер записи: 25
13-02-2014 дата публикации

MOTOR-DRIVEN COMPRESSOR

Номер: US20140044573A1
Автор: FUKASAKU Hiroshi, YAMASHITA Takuro
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven compressor includes an electric motor including a stator and a rotor, wherein the stator includes a stator core and a coil end projecting from the stator core, a rotation shaft, a compression unit, a motor driving circuit, a housing accommodating the compression unit, the electric motor, and the motor driving circuit sequentially arranged in an axial direction of the rotation shaft, a conductor configured to electrically connect the motor driving circuit to the electric motor, a lead extending from the coil end, a connection terminal electrically connecting the conductor to the lead, and a cluster block accommodating the connection terminal. The cluster block is arranged in the housing. The cluster block is coupled to the stator with at least part of the cluster block located inward from the coil end in a radial direction of the rotation shaft. 1. A motor-driven compressor comprising:an electric motor including a stator and a rotor, wherein the stator includes a stator core and a coil end projecting from the stator core;a rotation shaft configured to rotate integrally with the rotor;a compression unit configured to be driven when the rotation shaft rotates;a motor driving circuit configured to drive the electric motor;a housing accommodating the compression unit, the electric motor, and the motor driving circuit sequentially arranged in an axial direction of the rotation shaft;a conductor configured to electrically connect the motor driving circuit to the electric motor;a lead extending from the coil end, wherein the coil end is located between the stator core and the motor driving circuit in the axial direction;a connection terminal electrically connecting the conductor to the lead; anda cluster block accommodating the connection terminal, whereinthe cluster block is arranged in the housing, andthe cluster block is coupled to the stator with at least part of the cluster block located inward from the coil end in a radial direction of the rotation ...

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Номер записи: 26
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.

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Номер записи: 27
27-02-2014 дата публикации

SCROLL COMPRESSION DEVICE

Номер: US20140056736A1
Автор: Aida Kenji, Akuzawa Katsuki, Hayashi Akihiro, Iitsuka Satoshi, Kiyokawa Yasunori, Kon Tsutomu, Nagasawa Yoshiaki, Nagase Yoshihiko, Sugimoto Kazuyoshi
Принадлежит: SANYO ELECTRIC CO., LTD.

A scroll compression mechanism for compressing refrigerant and a driving motor that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing the scroll compression mechanism is supported in the casing by a main frame a stator of the driving motor is directly or indirectly supported in the casing and the driving shaft is connected to a rotor of the driving motor and supported in the casing by a bearing plate and a lower end of the driving shaft is supported by a thrust plate provided to the bearing plate and the center position of the rotor is located to be lower than the center position of the stator 1. A scroll compression device , characterized in that:a scroll compression mechanism for compressing refrigerant and a. driving motor that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing;the scroll compression mechanism is supported in the casing by a main frame;a stator of the driving motor is directly or indirectly supported in the casing;the driving shaft is connected to a rotor of the driving motor and supported in the casing by a healing plate, and a lower end of the driving shaft is supported by a thrust plate provided to the bearing plate; andthe center position of the rotor is located to be lower than the center position of the stator.2. The scroll compression device according to claim 1 , wherein the center position of the rotor is located to be lower than the center position of the stator in such a range that the rotor does not jump up when the driving motor is started.3. The scroll compression device according to claim 1 , wherein the center position of the rotor is coincident with the center position of the stator and upward force acts on the rotor during operation.4. The scroll compression device according to claim 1 , wherein the center position of the rotor is located to ...

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Номер записи: 28
06-03-2014 дата публикации

SCROLL COMPRESSION DEVICE AND METHOD FOR MAGNETIZING SCROLL COMPRESSION DEVICE

Номер: US20140064995A1
Автор: Aida Kenji, Akuzawa Katsuki, Hayashi Akihiro, Iitsuka Satoshi, Kiyokawa Yasunori, Kon Tsutomu, Nagasawa Yoshiaki, Nagase Yoshihiko, Sugimoto Kazuyoshi
Принадлежит: SANYO ELECTRIC CO., LTD.

A scroll compression device that enhances the efficiency of workability of magnetization of windings is provided. A scroll compression mechanism for compressing refrigerant and a driving shaft that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing , the scroll compression mechanism is supported in the casing by a main frame , a rotor of the driving motor is connected to the driving shaft , the driving shaft is supported in the casing by a bearing plate , a pickup is connected to an oil supply path extending in an up-and-down direction in the driving shaft , and a holder extending in a radial direction is provided in the oil supply path at the back side of the pickup 1. A scroll compression device , characterized in that a scroll compression mechanism for compressing refrigerant and a driving shaft that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing:the scroll compression mechanism is supported in the casing by a main frame;a rotor of the driving motor is connected to the driving shaft,the driving shaft is supported in the casing by a bearing plate;a pickup is connected to an oil supply path extending in an up-and-down direction in the driving shaft; anda holder extending in a radial direction is provided in the oil supply path at the back side of the pickup.2. The scroll compression device according to claim 1 , wherein the holder is a pin member penetrating through the oil supply path.3. The scroll compression device according to claim 1 , wherein a lower balancer is provided to a lower portion of the rotor of the driving motor claim 1 , a regulation plate for regulating rotation of the rotor is provided to the lower surface of the lower balancer claim 1 , and a plurality of lock groove portions are provided on the outer periphery of the regulation plate.4. The scroll ...

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Номер записи: 29
06-03-2014 дата публикации

Capacity Modulated Scroll Compressor

Номер: US20140064999A1
Автор: Sunil Annappa Magadum, Vinayak Madanrao Juge
Принадлежит: Emerson Climate Technologies Inc

A compressor including a housing defining a suction pressure region and a discharge pressure region includes first and second scroll members forming compression pockets. A first chamber located on the first end plate of the first scroll member includes first and second passages and a first aperture extending therethrough and in communication with the first chamber. The first aperture provides communication between a compression pocket and the first chamber. A modulation assembly is located in the first chamber and includes a heater and a thermal valve. The valve is displaceable from a first position that isolates the first passage from the second passage and a second position that permits communication between the first and second passages. The valve is displaced as a result of a temperature change provided by the heater.

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Номер записи: 30
03-04-2014 дата публикации

VACUUM PUMP STATORS AND VACUUM PUMPS

Номер: US20140093412A1
Автор: Stones Ian David
Принадлежит: EDWARDS LIMITED

Combined booster and primary pump arrangements can be bulky and require separate supplies of purge gas and cooling water. In order to overcome this problem invention provides a vacuum pump in which two or more pumping mechanisms, i.e. the booster pump and main pump, are housed in the same stator. The invention further provides a vacuum pump stator comprising at least two operatively interconnected cavities, wherein at least two of the cavities each comprise at least one rotor-receiving portion shaped to receive two or more at least partially intermeshing rotors, and wherein an axis of a rotor-receiving portion of a first one of the cavities is offset with respect to an axis of a rotor-receiving portion of a second one of the cavities. 1. A vacuum pump stator comprising at least two cavities , wherein at least first cavity of the at least two cavities and a second cavity of the at least two cavities each comprises a respective rotor-receiving portion shaped to receive at least one pair of intermeshing rotors , and wherein an axis of the respective rotor-receiving portion of the first cavities cavity is offset with respect to an axis of the respective rotor-receiving portion of the second cavity.2. The vacuum pump stator of claim 1 , wherein the at least two cavities are operatively interconnected by a conduit.3. The vacuum pump stator of claim 2 , wherein the conduit extends through a body of the vacuum pump stator to interconnect two cavities of the at least two cavities.4. The vacuum pump stator of any of claim 2 , or claim 2 , wherein at least one cavity of the at least two cavities comprises a plurality of axially aligned claim 2 , and interconnected claim 2 , rotor-receiving portions.5. The vacuum pump stator of claim 4 , wherein each of the plurality of axially aligned claim 4 , and interconnected claim 4 , rotor receiving portion is adapted claim 4 , in use claim 4 , to receive a pair of intermeshing rotors claim 4 , a first rotor of each pair of intermeshing ...

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Номер записи: 31
10-04-2014 дата публикации

PUMP

Номер: US20140099225A1
Автор: Denny Mark Joseph
Принадлежит: BP Exploration Operating Company Limited

The invention provides a pump comprising a pump inlet, a pump outlet, at least two threaded rotors and a pressure controlled valve, the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet. The pressure controlled valve can be a control valve. The invention also provides a multiple stage pump assembly comprising at least two pumps arranged in series, wherein at least one of the pumps is the aforementioned pump. 114-. (canceled)15. A multiple stage pump assembly comprising at least two pumps arranged in series , wherein at least the second and each subsequent pump comprises a pump inlet , a pump outlet , at least two threaded rotors and a pressure controlled valve , the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet.16. The assembly of claim 15 , in which the pressure controlled valve is adapted to control the rate of fluid flow there-through in proportion to the gas to liquid ratio of a fluid being pumped by the pump in use.17. The assembly of claim 15 , in which the pressure controlled valve is a control valve.18. The assembly of claim 15 , further comprising a conduit connecting the pump outlet to the pump inlet and through which re-circulated fluid can flow in use.19. The assembly of claim 18 , in which the pressure controlled valve is located wholly or partly within the conduit or adjacent one or other end of the conduit.20. The assembly of claim 18 , further comprising a recess in the pump outlet to preferentially allow claim 18 , in use claim 18 , liquid rather than gas to flow from an enclosure in which the threaded rotors are located to the conduit.21. The assembly of claim 15 , in which the pressure controlled valve is one which responds to the absolute pressure difference between the pump outlet and the pump inlet such that the valve permits fluid to flow there-through when the absolute pressure difference between the pump ...

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Номер записи: 32
05-01-2017 дата публикации

Vane compressor

Номер: US20170002814A1
Автор: Hiroki Nagano, Kunihisa Matsuda, Tatsushi Mori, Yuya Hattori
Принадлежит: Toyota Industries Corp

In a vane compressor, a transmission pin is accommodated in a communication hole that provides communication between a first vane slot and a second vane slot. The transmission pin includes a loose-fit portion that is loosely inserted in a recessed portion formed in a bottom surface of each of first and second vanes, a shaft portion, and a flange portion formed between the loose-fit portion and the shaft portion and in contact with the bottom surface. A coil spring is disposed in the communication hole to urge the first vane and the second vane in opposite directions away from each other via the flange portion. The coil spring is disposed around the shaft portion and supported by the flange portion so as to urge and support the transmission pin.

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Номер записи: 33
05-01-2017 дата публикации

Scroll compressor

Номер: US20170002816A1
Автор: Takashi Uekawa
Принадлежит: Daikin Industries Ltd

A scroll compressor includes a casing with an oil reservoir, fixed and movable scrolls, a crank shaft, and a housing having an upper bearing rotatably supporting the crank shaft. The crank shaft has an oil feed path and the housing has a crank chamber. An outer peripheral surface of the crank shaft has an annular groove, and a spiral groove. The housing has a bearing back-face passage connecting the crank chamber and the annular groove. If no oil is fed from the oil reservoir to the sliding surface of the crank shaft through the oil feed path during rotation of the crank shaft, oil in the crank chamber is fed to the upper bearing from the crank chamber through the bearing back-face passage and the annular groove due to a pump effect of the spiral groove.

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Номер записи: 34
01-01-2015 дата публикации

CAPACITY-MODULATED SCROLL COMPRESSOR

Номер: US20150004039A1
Автор: DOEPKER Roy
Принадлежит:

A compressor may include a shell defining an internal volume containing compressed working fluid and first and second scrolls disposed within the internal volume. The first scroll may include a first spiral wrap. The second scroll may include a second spiral wrap, a suction inlet opening and a capacity-modulation aperture. The second spiral wrap may engage the first spiral wrap to define a pocket therebetween. The suction inlet opening may be sealed off from the internal volume. The capacity-modulation aperture may receive a valve member that is movable between a first position allowing leakage of fluid from the pocket to the suction inlet opening and a second position restricting leakage of fluid from the pocket. 1. A compressor comprising:a shell defining an internal volume;a first scroll disposed within said internal volume and including a first spiral wrap;a second scroll disposed within said internal volume and including a second spiral wrap engaged with said first spiral wrap to form a pocket between said first and second spiral wraps, said second scroll including a suction inlet opening, a discharge passage and a capacity-modulation aperture, said suction inlet opening receiving said fluid at a first pressure and being isolated from said internal volume, said discharge passage discharging said fluid to said internal volume at a second pressure that is higher than said first pressure; anda valve member at least partially disposed within said capacity-modulation aperture and movable between a first position in which said valve member restricts fluid to flow around a tip of said first spiral wrap to restrict fluid communication between said suction inlet opening and said pocket and a second position in which said valve member allows fluid-flow around said tip of said first spiral wrap to provide fluid communication between said suction inlet opening and said pocket.2. The compressor of claim 1 , wherein an end of said valve member is exposed to fluid within a ...

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Номер записи: 35
07-01-2016 дата публикации

Scroll Compressor

Номер: US20160003247A1
Автор: MATSUMURA Shoji, OHTAHARA Masaru, Takeda Hiromu
Принадлежит:

The purpose of the present invention is to suppress the contact between the wrap tooth tip and the tooth bottom by enlarging the tooth bottom step, and to reduce the loss owing to the gap as a result of enlarging the tooth bottom step. The fixed scroll includes a fixed scroll-side flat plate and a fixed-side wrap standing on one surface of the fixed-side plate while retaining the spiral shape. The orbiting scroll includes an orbiting-side plate and an orbiting-side wrap standing on one surface of the orbiting-side plate while retaining the spiral shape. The orbiting-side wrap orbits with respect to the fixed scroll while being in mesh with the fixed side wrap to form a compression chamber. Each of the fixed-side plate and the orbiting-side plate has the step on the tooth bottom at the inner periphery deeper than the step on the tooth bottom at the outer periphery. The step at the outer or the inner periphery, which is formed on the tooth bottom of the orbiting-side plate, has the depth smaller than the one on the tooth bottom of the fixed-side plate. 1. A scroll compressor comprising:a fixed scroll including a fixed-side plate and a fixed-side wrap standing on one surface of the fixed-side plate while retaining a spiral shape;an orbiting scroll including an orbiting-side plate, and an orbiting-side wrap standing on one surface of the orbiting-side plate while retaining a spiral shape, which allows the orbiting-side wrap to be in mesh with the fixed-side wrap for orbiting with respect to the fixed scroll to form a compression chamber; andan electric motor for driving the orbiting scroll via a crankshaft,wherein each tooth bottom of the fixed-side wrap and the orbiting-side wrap has a step formed to become deeper from an outer periphery to an inner periphery; andthe step is formed on the tooth bottom of the fixed-side wrap at the inner periphery so as to be deeper than the step formed on the tooth bottom of the orbiting-side wrap at the inner periphery.2. The scroll ...

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Номер записи: 36
07-01-2016 дата публикации

Scroll Compressor

Номер: US20160003252A1
Автор: Fukaya Yoshihiro, Hasegawa Shuji, IMADA Koichi, Ishikawa Akihiro, Tsuchiya Takeshi
Принадлежит:

An object is to enable suppression of degradation of reliability by supporting a flange portion of a crankshaft with a bearing while downsizing a scroll compressor by reducing the size of the flange portion of the crankshaft. A scroll compressor includes: a fixed scroll fixed to a frame; an orbiting scroll forming a compression chamber by performing an orbital motion with respect to the fixed scroll; an electric motor that drives the orbiting scroll via the crankshaft; and a bearing part provided on the lower side from the flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft. The scroll compressor furthers has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side. Assuming that the outer diameter of the flange portion is φDt and the outer diameter of the thrust stopper is φDs, φDt<φDs holds. 1. A scroll compressor comprising:a fixed scroll fixed to a frame;an orbiting scroll that forms a compression chamber by performing an orbital motion with respect to the fixed scroll;an electric motor that drives the orbiting scroll via a crankshaft; anda bearing part provided on the lower side from a flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft,wherein the compressor further has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side, and{'b': '12', 'i': 'd', 'wherein, assuming that an outer diameter of the flange portion is φDt and an outer diameter of the thrust stopper is φDs,'}φDt<φDs holds.2. The scroll compressor according to claim 1 , wherein the thrust stopper and the flange portion are integrally formed with the same member as the member of the crankshaft.3. The scroll compressor according to claim 1 , wherein the position of an ...

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Номер записи: 37
04-01-2018 дата публикации

ELECTRIC COMPRESSOR

Номер: US20180003179A1
Автор: KAMIYA Yuji, Nakamoto Shinji, SAKAI Koji
Принадлежит:

An electric compressor includes a compression portion that compresses and discharges a drawn fluid, and a motor of the compression portion. The electric compressor includes an actuator that includes multiple electronic components and drives the motor, a first casing that accommodates the actuator, and a second casing that accommodates the compression portion and the motor. The second casing includes a discharge passage in which a high-temperature fluid compressed by the compression portion flows. A limiting structure that limits the heat transfer from the fluid flowing in the discharge passage is provided between one of the electronic components and the discharge passage. The limiting structure includes a seat portion that defines a gap between a bottom surface of the one of the plurality of electronic components and the discharge passage. According to the electric compressor, the heat transfer from the fluid to the electronic components can be limited. 1. An electric compressor comprising:a compression portion that compresses and discharges a drawn fluid;a motor that is a power source of the compressor;an actuator that includes a plurality of electronic components and drives the motor;a first casing that accommodates the actuator; anda second casing that accommodates the compression portion and the motor, whereinthe second casing includes a discharge passage in which the high-temperature fluid compressed by the compression portion flows, anda limiting structure that limits a heat transfer from the fluid flowing in the discharge passage is provided between at least one of the plurality of electronic components and the discharge passage, andthe limiting structure includes a seat portion that defines a gap between a bottom surface of the at least one of the plurality of electronic components and the discharge passage, the seat portion being provided in the first casing separately from the first casing.2. The electric compressor according to claim 1 , whereinthe second ...

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Номер записи: 38
02-01-2020 дата публикации

Compressor

Номер: US20200003199A1
Автор: KOWADA Yoshio
Принадлежит:

To reduce or prevent failures due to contamination, such as control and/or lubrication failure, the compressor according to the present invention includes an oil separator having a separation portion configured to separate lubricating oil OIL from a working fluid by using a centrifugal force, and a storage portion located below the separation portion and configured to store lubricating oil OIL separated by the separation portion. A hat-shaped trap member is disposed between the separation portion and the storage portion. The trap member allows precipitation and trapping of the contamination CON mixed in the lubricating oil OIL by temporarily storing the lubricating oil OIL separated by the separation portion and discharging a supernatant of the lubricating oil OIL into the storage portion. 1. A compressor comprising a separation portion configured to separate lubricating oil from a working fluid by using a centrifugal force; and', 'a storage portion located below the separation portion and configured to store lubricating oil separated by the separation portion,', 'wherein a trap member configured to temporarily store the lubricating oil separated by the separation portion and to discharge a supernatant of the lubricating oil into the storage portion is disposed between the separation portion and the storage portion., 'an oil separator having2. The compressor according to claim 1 ,wherein the trap member has a portion rising toward the separation portion, the rising portion having at least one small hole for allowing the supernatant of the lubricating oil to pass therethrough.3. The compressor according to claim 2 , wherein the trap member is formed of a hat-shaped partition wall.4. The compressor according to claim 3 , wherein the trap member has a communication hole which communicates the separation portion with the storage portion at a center portion of the trap member.5. The compressor according to claim 3 , wherein a flange portion having an annular shape ...

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Номер записи: 39
04-01-2018 дата публикации

SCROLL COMPRESSORS WITH DIFFERENT VOLUME INDEXES AND SYSTEMS AND METHODS FOR SAME

Номер: US20180003423A1
Автор: Galante Francesco, Kobor Richard G.
Принадлежит: Bitzer Kuehlmaschinenbau GmbH

A plurality of scroll compressors with different fixed volume indexes are connected in fluid parallel circuit and configured to selectively operate to maximize isentropic efficiency at different condensing temperatures. Different quantities of scroll compressors of different volume indexes may be selected based upon typical climate or geographic location environmental conditions to attempt to maximize efficiency. A controller may selectively operate different combinations of the compressors of different volume indexes bases up load demands and condensing temperature conditions, which may be determined in a variety of ways. 1. A compressor arrangement , comprising:a plurality of refrigerant compressors connected in parallel circuit, each refrigerant compressor having a volume index, the plurality of refrigerant compressors including at least a first compressor and a second compressor, wherein each of the first compressor and the second compressor include a single inlet, single outlet, and a single flowpath extending between the single inlet and the single outlet, and wherein each of the first compressor and the second compressor includes a housing and a motor contained within said housing, the first compressor having a different volume index than each second compressor, wherein the volume index of the first compressor and the second compressor is fixed and non-variable.2. The compressor arrangement of claim 1 , wherein the first and second compressors are scroll compressors.3. The compressor arrangement of claim 2 , wherein in relative relation between the first and second compressors claim 2 , each first compressor has a higher isentropic efficiency at a high temperature range for saturated condensing temperature claim 2 , and wherein each second compressor has a higher isentropic efficiency at a low temperature range for saturated condensing temperature claim 2 , the high temperature range being higher than the low temperature range.4. The compressor arrangement of ...

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Номер записи: 40
07-01-2021 дата публикации

COMPRESSOR

Номер: US20210003130A1
Автор: KIM Sungchoon, LEE Donggeun
Принадлежит:

A compressor is provided that may include a refrigerant flow path provided in a rotational shaft so as to guide a refrigerant gas. The rotational shaft operates a compression device using a drive force of an electric motor. In such a structure, the refrigerant gas may be directly discharged to a discharge space without passing through other portions such that flow path resistance may be minimized. 1. A compressor , comprising:a hermetic casing having a discharge space to which a refrigerant gas is discharged;an electric motor provided in the hermetic casing to supply a rotational drive force;a compression device provided in the hermetic casing so as to compress the refrigerant gas; anda rotational shaft that operates the compression device using the rotational drive force of the electric motor, wherein the rotational shaft includes a refrigerant flow path provided therein, the rotational shaft guiding the compressed refrigerant gas to the discharge space from the compression device.2. The compressor of claim 1 , wherein the discharge space in the hermetic casing is provided at an upper side of an inner space of the hermetic casing and an oil storage space in which oil is stored is provided at a lower side of the inner space of the hermetic casing claim 1 , wherein the electric motor is positioned in a lower portion of the discharge space claim 1 , wherein the compression device is positioned at a lower side of the electric motor claim 1 , wherein the rotational shaft is formed through each of centers of the electric motor and the compression device such that an upper end of the rotational shaft is exposed to the discharge space and a lower end of the rotational shaft is exposed to a space beneath the compression device claim 1 , and wherein the refrigerant flow path communicates with the discharge space and the space beneath the compression device such that the refrigerant gas discharged to the space beneath the compression device is guided to the discharge space.3. ...

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Номер записи: 41
27-01-2022 дата публикации

HIGH PRESSURE SCROLL COMPRESSOR

Номер: US20220025884A1
Автор: Bae Moo Seong, Cho Yang Hee
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Disclosed herein is a high-pressure scroll compressor, in response to a discharged refrigerant flowing into a back pressure chamber, capable of directly discharging the refrigerant to a space inside a main body, and capable of maintaining an intermediate pressure of the back pressure chamber to be less than a discharge pressure of the refrigerant by separately providing a discharge flow path in the back pressure chamber. 1. A high-pressure scroll compressor comprising:a main body;a fixed scroll fixed inside the main body and comprising a discharge port through which a high-pressure refrigerant is discharged;an orbiting scroll engaged with the fixed scroll to perform a relative orbiting motion, and forming a compression chamber with the fixed scroll;a main frame fixed inside the main body so as to be located under the orbiting scroll and comprising a back pressure chamber filled with an intermediate-pressure refrigerant;a back pressure hole provided in the orbiting scroll and provided to allow the compression chamber to communicate with the back pressure chamber;a bypass portion provided in plural on an upper surface of the fixed scroll and configured to selectively bypass the refrigerant of the compression chamber to a space inside the main body; anda back pressure chamber discharge portion configured to selectively discharge the refrigerant of the back pressure chamber to the space inside the main body.2. The high-pressure scroll compressor of claim 1 , whereinthe back pressure chamber discharge portion comprises a back pressure chamber discharge flow path provided in the fixed scroll to discharge the refrigerant inside the back pressure chamber into the space inside the main body, and a back pressure chamber discharge valve configured to selectively open and close the back pressure chamber discharge flow path.3. The high-pressure scroll compressor of claim 2 , whereinthe back pressure chamber discharge flow path is provided to pass through the fixed scroll from an ...

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Номер записи: 42
27-01-2022 дата публикации

VARIABLE CAPACITY COMPRESSOR

Номер: US20220025887A1
Автор: LIU Chunhui, PAN Jin, WANG Yanzhen
Принадлежит: SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO., LTD.

A variable capacity compressor is provided, including: two cylinders and a middle plate; at least one flow channel provided in the middle plate, wherein one end of the flow channel is connected to an exhaust chamber of any one of the two cylinders, the other end is connected to a suction chamber of the other one of the two cylinders. In present disclosure, by setting a flow channel in the middle plate of the variable capacity compressor, the exhaust chamber of one cylinder is connected to the suction chamber of the other cylinder. When the flow channel is completely closed, the two cylinders operate independently; when the flow channel is opened, the refrigerant in the exhaust chamber flows into the suction chamber through the flow channel, that is, the upper cylinders and the lower cylinder are connected to each other, which can adjust the capacity of the compressor. 1. A variable capacity compressor , comprising:two cylinders;a middle plate, separating the two cylinders, and at least one flow channel provided in the middle plate, wherein one end of the flow channel is connected to an exhaust chamber of any one of the two cylinders, the other end of the flow channel is connected to a suction chamber of the other one of the two cylinders; each flow channel is provided with a flow control component for adjusting flow rate of refrigerant flowing through the flow channel.2. The variable capacity compressor of claim 1 , wherein the flow control component comprises a first slider provided in the middle plate claim 1 , and the first slider is capable of moving along a radial direction of the middle plate to change an effective flow area of the flow channel claim 1 , which adjusts the flow rate of the refrigerant flowing through the flow channel.3. The variable capacity compressor of claim 2 , wherein the first slider is driven by a solenoid valve claim 2 , so that the first slider moves along the radial direction of the middle plate.4. The variable capacity compressor of ...

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Номер записи: 43
27-01-2022 дата публикации

PHOBIC/PHILIC STRUCTURES IN REFRIGERATION SYSTEMS AND LIQUID VAPOR SEPARATION IN REFRIGERATION SYSTEMS

Номер: US20220026125A1
Автор: Cosby, II Ronald Maurice, Johnson Jay, Kujak Stephen Anthony
Принадлежит:

Oleophobic and/or philic surface(s) are utilized for oil separation, direction, and/or collection in a refrigeration system. Surfaces of component(s) of a refrigeration system (compressor, oil separator, evaporator, etc.) are produced to be oleophobic or philic. The oleophobic and/or philic surfaces are utilized to direct a flow path of oil within the refrigeration system or to prevent oil connection in an area. Refrigerant phobic and/or lubricant phobic material(s) also may be utilized to help promote separation of refrigerant vapor from refrigerant liquid and/or from oil in refrigeration systems. 1. (canceled)2. (canceled)3. A method of utilizing oleophobic and/or oleophilic surface(s) for directing oil flow within a refrigeration and/or HVAC system , comprising:directing oil or an oil/refrigerant mixture into contact with an oleophobic surface and/or an oleophilic surface; andat least one of: (i) repelling oil from the oleophobic surface and aggregating oil on the surface thereon for oil beading, when the oil comes into contact with the oleophobic surface; and (ii) attracting, adsorbing, and/or absorbing oil on the oleophilic surface for preventing oil beading, when the oil comes into contact with the oleophilic surface, wherein the oleophilic surface and/or the oleophobic surface is an inner surface area exposed to the inside of a compressor.4. A compressor internal oil separator for a refrigeration system , comprising:a housing including an open end configured to receive a mixture of refrigerant vapor and oil from an insider of a compressor, and a vapor outlet configured to direct out refrigerant vapor; andone or more partitions separating the open end from the vapor outlet, one or more of the partitions including a phobic and/or lubricant phobic material for preventing oil from passing through the walls while allowing for the refrigerant vapor to penetrate through the walls and exit the housing via the vapor outlet, the separated oil being collected in a ...

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Номер записи: 44
14-01-2021 дата публикации

Compressor Having Capacity Modulation

Номер: US20210010472A1
Автор: James W. MCBEAN, Joseph B. Burton, Phillip M. Moore, Robert V. Eyink
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell assembly, first and second scrolls, a piston, and a piston-retention member. The piston engages the first scroll and may be partially received within a recess defined by the shell assembly. The piston and the shell assembly may cooperate to define a pressure chamber. The pressure chamber may be in selective fluid communication with a source of working fluid to control movement of the piston relative to the shell assembly. The piston-retention member may engage the piston and a rotationally fixed structure. The piston-retention member allows rotation of the piston relative to the first scroll in a first rotational direction and restricts rotation of the piston relative to the first scroll in a second rotational direction.

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Номер записи: 45
10-01-2019 дата публикации

Compressor With Floating Seal

Номер: US20190010944A1
Автор: Bharat Mahavir SHIROTE, Patrick R. Gillespie, Pavan Pralhad JORWEKAR, Vikas Ramkumar VERMA, Yogesh Sudhirarao MAHURE
Принадлежит: Emerson Climate Technologies Inc

A compressor may include first and second scrolls and a seal. The first scroll includes a first end plate and a first spiral wrap extending from the first end plate. The first end plate may define a discharge passage and an annular recess surrounding the discharge passage. The second scroll includes a second end plate and a second spiral wrap extending from the second end plate. The first and second spiral wraps cooperate to define a plurality of fluid pockets. The seal may be at least partially received in the annular recess and may cooperate with the first scroll to define a biasing chamber receiving fluid at an intermediate pressure. The seal may include inner and outer diametrical surfaces. The inner diametrical surface may include a plurality of first annular grooves. The outer diametrical surface may include a plurality of second annular grooves.

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Номер записи: 46
03-02-2022 дата публикации

Dual-cylinder two-stage variable cpacity compressor

Номер: US20220034320A1
Автор: Chunhui Liu, JIN Pan, Yanzhen Wang
Принадлежит: Shanghai Highly Electrical Appliances Co Ltd

A dual-cylinder two-stage variable capacity compressor is provided, including: a first cylinder, having an exhaust port connected to a first exhaust channel: a second cylinder, wherein the second cylinder is provided with a ventilating slider, and the ventilating slider is provided with a first gas transit channel and a second gas transit channel; wherein, when the ventilating slider is at a first connecting position, the first exhaust channel is connected to a suction channel in a second cylinder when the ventilating slider is at a second connecting position, the first exhaust channel is connected to a second exhaust channel. The compressor of the present disclosure can vary its own capacity, that is, the variation of the compressor's capacity can be realized by arranging a ventilating slider, which will meet the requirements of variation loads of the compressor in different seasons.

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Номер записи: 47
21-01-2016 дата публикации

ELECTRIC MOTOR VEHICLE VACUUM PUMP ARRANGEMENT

Номер: US20160017885A1
Автор: AL-HASAN NABIL SALIM, CRAMER SEBASTIAN, Mueller Daniel, Zill Mathias
Принадлежит:

An electric vehicle vacuum pump assembly includes a combination, a separate acoustic barrier casing configured to encase the combination in each of a radially-spaced relationship and an axially-spaced relationship, and an annular gastight attenuation assembly radially arranged between the separate acoustic barrier casing on a first side and the combination on a second side. The combination comprises a pump unit and a drive motor comprising a rotor space, a stator space, a ventilation inlet, and a ventilation outlet. The rotor space comprises a motor rotor, and the stator space comprises a motor stator. The separate acoustic barrier casing comprises an intake connection and a discharge connection. The ventilation inlet and the ventilation outlet of the drive motor are configured to provide a forced ventilation past the annular gastight attenuation assembly and through at least one of the rotor space and the stator space. 112-. (canceled)13. An electric vehicle vacuum pump assembly comprising:a combination comprising:a pump unit, anda drive motor comprising a rotor space, a stator space, a ventilation inlet, and a ventilation outlet, the rotor space comprising a motor rotor, and the stator space comprising a motor stator;a separate acoustic barrier casing configured to encase the combination in each of a radially-spaced relationship and an axially-spaced relationship, the separate acoustic barrier casing comprising an intake connection and a discharge connection; andan annular gastight attenuation assembly radially arranged between the separate acoustic barrier casing on a first side and the combination on a second side,wherein, the ventilation inlet and the ventilation outlet of the drive motor are configured to provide a forced ventilation past the annular gastight attenuation assembly and through at least one of the rotor space and the stator space.14. The pump assembly as recited in claim 13 , wherein the pump unit is a rotary pump unit arranged coaxially with ...

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Номер записи: 48
21-01-2016 дата публикации

MULTIPLE CYLINDER ROTARY COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

Номер: US20160018136A1
Автор: Hirayama Takuya, KAWABE Isao
Принадлежит:

The multiple cylinder rotary compressor includes: a compressor body including a hermetic case, the hermetic case housing inside a rotating shaft, an electric motor section, and a compression mechanism body; the compression mechanism body including: at least three compression mechanism sections arranged so as to stack with each other in an axial direction of the rotating shaft, partition plates each of which disposed between the corresponding adjacent compression mechanism sections, and a primary bearing and a secondary bearing supporting the rotating shaft on both end sides of the compression mechanism body along the axial direction of the rotating shaft; and the compression mechanism sections each of which including: a cylinder forming inside a cylinder chamber, an eccentric section provided to the rotating shaft, disposed in the cylinder chamber, a roller fitted to the eccentric section, rotating eccentrically within the cylinder chamber, and a blade dividing the inside of the cylinder chamber into two. At least one partition plate of the partition plates constitutes a partition plate bearing supporting the rotating shaft. 1. A multiple cylinder rotary compressor comprising: a rotating shaft rotatable around a shaft center,', 'an electric motor section connected to one end side of the rotating shaft, and', 'a compression mechanism body connected to the other end side of the rotating shaft;, 'a compressor body including a hermetic case, the hermetic case housing inside'} at least three compression mechanism sections arranged so as to stack with each other in an axial direction of the rotating shaft,', 'partition plates each of which disposed between the corresponding adjacent compression mechanism sections, and', 'a primary bearing and a secondary bearing supporting the rotating shaft on both end sides of the compression mechanism body along the axial direction of the rotating shaft; and, 'the compression mechanism body including'} a cylinder forming inside a ...

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Номер записи: 49
18-01-2018 дата публикации

ROTARY COMPRESSOR

Номер: US20180017057A1
Автор: FURUKAWA Motonobu, IZUMI Yasuyuki, Katayama Hiroki, MORISHITA Taku, MOROZUMI Naoya
Принадлежит:

In a rotary compressor, a lower end plate cover is formed in a shape of a flat plate, and has a through hole that is provided to penetrate in the thickness direction of the lower end plate cover and that communicates with a communication groove. When a sectional area of the communication groove which passes through a center line of a rotation shaft, and is on a section along the rotation shaft direction is S1 [mm], an area in which the through hole and the communication groove overlap each other on a plane orthogonal to the rotation shaft is S2 [mm], and an excluding capacity of a lower cylinder chamber is V [cc], each of 0.10≦(S2/V)≦0.50, and 1.0≦(S2/S1)≦7.0 is satisfied. 1. A rotary compressor comprising:a sealed vertically-placed cylindrical compressor housing in which a discharging unit of a refrigerant is provided in an upper portion, and an inlet unit of the refrigerant is provided in a lower portion;a compressing unit which is disposed in the lower portion of the compressor housing, and which compresses the refrigerant suctioned from the inlet unit, and which discharges the refrigerant from the discharging unit anda motor which is disposed in the upper portion of the compressor housing, and which drives the compressing unit, an annular upper cylinder and an annular lower cylinder,', 'an upper end plate which closes an upper side of the upper cylinder,', 'a lower end plate which closes a lower side of the lower cylinder,', 'an intermediate partition plate which is disposed between the upper cylinder and the lower cylinder, and which closes the lower side of the upper cylinder and the upper side of the lower cylinder,', 'a rotation shaft which is rotated by the motor,', 'an upper eccentric portion and a lower eccentric portion which are provided in the rotation shaft by applying a phase difference of 180° therebetween,', 'an upper piston which is fitted to the upper eccentric portion, and which revolves along an inner circumferential surface of the upper ...

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Номер записи: 50
21-01-2021 дата публикации

Scroll compressor

Номер: US20210017985A1
Автор: Changeol JO, Donghyun Sohn, Suchul Kim
Принадлежит: LG ELECTRONICS INC

A scroll compressor is provided in which a center of a back pressure chamber is eccentrically disposed relative to a center of a fixed scroll. For example, the center of the back pressure chamber may be moved towards a center of an orbiting scroll at a time of discharge, thereby preventing displacement of the fixed scroll and ensuring stability in orbital movement of the orbiting scroll.

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Номер записи: 51
21-01-2021 дата публикации

VACUUM DEVICE

Номер: US20210017990A1
Автор: HERRMANN Steffen
Принадлежит:

The invention relates to a vacuum device, in particular to a vacuum pump, comprising a reservoir for an operating medium; an outlet connector arranged at or in the reservoir; and a selection device that is configured to selectively close or open the outlet connector or an outlet line, which is connected via the outlet connector to the reservoir, in dependence on whether the operating medium or water is present at the outlet connector. 1. A vacuum device comprising:a reservoir for an operating medium;an outlet connector arranged at or in the reservoir; anda selection device that is configured to selectively close or open the outlet connector or an outlet line, which is connected via the outlet connector to the reservoir, in dependence on whether the operating medium or water is present at the outlet connector.2. The vacuum device in accordance with claim 1 , wherein the vacuum device is a vacuum pump.3. The vacuum device in accordance with claim 1 , wherein the outlet connector connects the reservoir to an operating medium return device.4. The vacuum device in accordance with claim 1 , wherein the outlet connector is connected to a low pressure region via an outlet line.5. The vacuum device in accordance with claim 1 , wherein the outlet connector is a drain connector.6. The vacuum device in accordance with claim 1 , wherein at least two outlet connectors are arranged at or in the reservoir; and wherein at least one of the outlet connectors can be opened or closed by a selection device.7. The vacuum device in accordance with claim 1 , wherein the outlet connector is oriented downwardly or upwardly.8. The vacuum device in accordance with claim 1 , wherein the selection device comprises a float that is adapted to float at a phase boundary between water and the operating medium; and wherein the selection device is configured to close or open the outlet connector or the outlet line in dependence on the floating height of the float.9. The vacuum device in accordance with ...

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Номер записи: 52
28-01-2016 дата публикации

COMPRESSOR MOTOR WITH CENTER STATOR

Номер: US20160025094A1
Автор: IGNATIEV Kirill M., PEREVOZCHIKOV Michael M., SEIBEL Stephen M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor is provided and may include a shell, a compression mechanism, a driveshaft, and a motor assembly. The compression mechanism may be disposed within the shell. The driveshaft is drivingly engaged with the compression mechanism. The motor assembly may be disposed within the shell and drivingly engaged with the driveshaft. The motor assembly may include a rotor, a stator, and a rotor support subassembly. The rotor may be disposed radially outwardly relative to the stator and fixed for rotation with the driveshaft. The rotor support subassembly may include a first support member coupled to the driveshaft and coupled to the rotor such that the driveshaft is operable to rotate with the rotor. 1. A compressor comprising:a shell;a compression mechanism disposed within said shell;a driveshaft rotatably supported by a first bearing and a second bearing and drivingly engaged with said compression mechanism;a bearing housing including a tubular portion in which said first and second bearings are disposed; anda motor assembly disposed within said shell and drivingly engaged with said driveshaft, said motor assembly including a rotor and a stator, said stator engaging an outer diametrical surface of said tubular portion, said rotor disposed radially outwardly relative to said stator and fixed for rotation with said driveshaft.2. The compressor of claim 1 , further comprising a support housing having a first side supporting said compression mechanism claim 1 , wherein said bearing housing is removably mounted to a second side of said support housing.3. The compressor of claim 2 , wherein said bearing housing includes a flange portion integrally formed with said tubular portion claim 2 , and wherein said flange portion is coupled to said support housing.4. The compressor of claim 3 , further comprising a counterweight fixed to said driveshaft between said compression mechanism and said flange portion of said bearing housing claim 3 , wherein said flange portion axially ...

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Номер записи: 53
26-01-2017 дата публикации

POROUS OIL FLOW CONTROLLER

Номер: US20170022984A1
Автор: Bhatia Kanwal, White Steven C.
Принадлежит:

A compressor comprises a housing having a hollow interior for communicating a fluid comprising a mixture of a gas and a lubricant therethrough. The hollow interior of the housing is divided into a low pressure side and a high pressure side. The low pressure side is disposed upstream of compression mechanism and the high pressure side is disposed downstream of the compression mechanism. A porous flow controller fluidly couples the high pressure side to the low pressure side. The porous flow controller is configured to meter a flow of the lubricant from the high pressure side to the low pressure side. 1. A compressor comprising:a housing having a hollow interior for communicating a fluid therethrough, the hollow interior of the housing divided into a low pressure side and a high pressure side; anda porous flow controller fluidly coupling the high pressure side to the low pressure side, wherein the porous flow controller is configured to meter a flow of the fluid from the high pressure side to the low pressure side.2. The compressor of claim 1 , further comprising a compression mechanism claim 1 , wherein the low pressure side is disposed upstream of the compression mechanism in a direction of flow of the fluid and the high pressure side is disposed downstream of the compression mechanism.3. The compressor of claim 1 , wherein an oil separator is disposed in the high pressure side upstream of the porous flow controller in a direction of flow of the fluid.4. The compressor of claim 1 , wherein the fluid comprises a mixture of a gaseous refrigerant and an oil.5. The compressor of claim 4 , wherein a portion of the fluid being metered by the porous flow controller comprises a higher percentage of the oil by volume than the gaseous refrigerant.6. The compressor of claim 4 , wherein the oil flows directly from the high pressure side to the low pressure side through the porous flow controller.7. The compressor of claim 1 , wherein the porous flow controller is formed in one ...

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Номер записи: 54
26-01-2017 дата публикации

COMPRESSOR AND AIR CONDITIONER

Номер: US20170022988A1
Автор: HU Yusheng, Huang Hui, LIANG Shebing, LUO Huifang, Ren Liping, WEI Huijun, Wu Jian, XU Jia, YANG Ouxiang, Zhu Hongwei
Принадлежит: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

A compressor includes a low-pressure stage cylinder, a first high-pressure stage cylinder and a second high-pressure stage cylinder which are stacked, a partition is arranged between each two adjacent cylinders, the first and second high-pressure stage cylinders are both situated at a same side of the low-pressure stage cylinder or respectively situated at two sides of the low-pressure stage cylinder, the lower flange is situated below the low-pressure stage cylinder, the first high-pressure stage cylinder and the second high-pressure stage cylinder. A first sliding sheet is provided in the first high-pressure stage cylinder, a second sliding sheet is provided in the second high-pressure stage cylinder, and a third sliding sheet is provided in the low-pressure stage cylinder. The first and the second high-pressure stage cylinders are arranged in parallel, and the first and second high-pressure stage cylinders arranged in parallel are connected to the low-pressure stage cylinder in series. 1. A compressor , comprising:a low-pressure stage cylinder, a first high-pressure stage cylinder, a second high-pressure stage cylinder and a lower flange, wherein,the low-pressure stage cylinder, the first high-pressure stage cylinder and the second high-pressure stage cylinder are stacked, and a partition is arranged between each two adjacent cylinders, the first high-pressure stage cylinder and the second high-pressure stage cylinder are both situated at a same side of the low-pressure stage cylinder or the first high-pressure stage cylinder and the second high-pressure stage cylinder are respectively situated at two sides of the low-pressure stage cylinder, the lower flange is situated below the low-pressure stage cylinder, the first high-pressure stage cylinder and the second high-pressure stage cylinder;the first high-pressure stage cylinder has a first sliding sheet slot, and a first sliding sheet is provided in the first sliding sheet slot, the second high-pressure stage ...

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Номер записи: 55
25-01-2018 дата публикации

Electric compressor

Номер: US20180023568A1
Автор: Eun Seok Kang, Jung Seon Kim, Seung Hwan SHIN, Sung Jun Park, Young Hun Lee
Принадлежит: Hanon Systems Corp

An electric compressor includes a cover. The cover is reinforced by forming straight ribs, ring ribs, connection ribs, or hexagonal ribs having a honeycomb structure. The straight ribs, rings ribs, connection ribs, or hexagonal ribs are formed on the inner side or the outer side of a body of the cover on a side of an inverter.

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Номер записи: 56
25-01-2018 дата публикации

OIL-FLOODED SCREW COMPRESSOR SYSTEM AND METHOD FOR MODIFYING THE SAME

Номер: US20180023571A1
Автор: ENDO Yasuaki
Принадлежит: MAYEKAWA MFG. CO., LTD.

An oil-flooded screw compressor system includes: a first lubricating oil supply system for supplying lubricating oil to screw parts; and a second lubricating oil supply system for supplying the lubricating oil to a bearing. The first lubricating oil supply system includes: a gas-liquid separator; a first supply flow passage; and a first supply path. The second lubricating oil supply system includes: a lubricating oil reservoir; a second supply flow passage; a second supply path; a first discharge flow passage; and a discharge path. It is possible to suppress dissolution of a gas to be compressed in lubricating oil and to suppress damage to a bearing due to deterioration of the performance of the lubricating oil, even in a case where the gas to be compressed is compatible with the lubricating oil. 1. An oil-flooded screw compressor system for compressing a gas to be compressed which is a compatible gas with lubricating oil , comprising: a male screw rotor and a female screw rotor each having a screw part and shaft portions formed on both ends of the screw part;', 'a housing having a screw chamber accommodating the screw parts inside and a bearing chamber accommodating the shaft portions inside; and', 'a bearing disposed in the bearing chamber, for rotatably supporting the shaft portions;, 'a screw compressor which includesa first lubricating oil supply system for supplying lubricating oil to the screw parts; anda second lubricating oil supply system for supplying the lubricating oil to the bearing, a gas-liquid separator configured to introduce discharge gas of the screw compressor therein and to separate the lubricating oil from the discharge gas;', 'a first supply flow passage formed through a housing wall which constitutes the housing, the first supply flow passage having an opening on an outer surface of the housing wall and being in communication with the screw chamber; and', 'a first supply path connected to a lubricating-oil storage region of the gas-liquid ...

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Номер записи: 57
10-02-2022 дата публикации

SUBMERSIBLE FUEL OIL SET

Номер: US20220042508A1
Автор: Hassan Ahmed M.
Принадлежит: Hayes Pump, Inc.

A submersible fuel oil apparatus includes a base; at least one platform supported above the base and having a top surface, an underside surface and an aperture therethrough; a submersible motor mounted on the top surface of the platform and having a motor shaft extending vertically downward through the aperture in the platform; a fuel oil pump supported underneath the platform and having a pump shaft extending vertically upward, a pump inlet into which fuel oil is adapted to be delivered, and a pump outlet from which fuel oil is adapted to be pumped, the pump positioned such that the motor shaft and the pump shaft are aligned; a coupler connecting the motor shaft and pump shaft to each other; inlet piping connected to the pump inlet; and outlet piping connected to the pump outlet. 1. Submersible fuel oil apparatus , comprising:a. a baseb. at least one platform supported above said base and having (i) a top surface, (ii) an underside surface and (iii) an aperture therethrough;c. a submersible motor supported by one of said top surface and said underside surface of said platform and having a vertically oriented motor shaft;d. a fuel oil pump supported by said platform on a side of said platform opposite said motor and having a (i) a vertically oriented pump shaft, (ii) a pump inlet into which fuel oil is adapted to be delivered, and (iii) a pump outlet from which fuel oil is adapted to be pumped, said pump and motor positioned such that said motor shaft and said pump shaft are aligned, one of said motor shaft and pump shaft extending through said aperture in said platform;e. a coupler connecting said motor shaft and pump shaft to each other;f. inlet piping connected to said pump inlet; andg. outlet piping connected to said pump outlet.2. The submersible fuel oil apparatus of further comprising support brackets securely connecting said outlet piping to said base.3. The submersible fuel oil apparatus of further comprising a mounting bracket having an upper connection ...

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Номер записи: 58
10-02-2022 дата публикации

COMPRESSOR OIL MANAGEMENT SYSTEM

Номер: US20220042509A1
Автор: LIANG Sheng, NOHALES HERRAIZ Jesus Angel, SU Xiaogeng
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor () includes a compression mechanism () and a driveshaft () that drives the compression mechanism (). The driveshaft () may include a first axially extending passage (), a second axially extending passage (), and a lubricant distribution passage (). The first and second axially extending passages () may be radially offset from each other and may intersect each other at an overlap region (). The first and second axially extending passages () are in fluid communication with each other at the overlap region (). The lubricant distribution passage () may extend from the first axially extending passage () through an outer diametrical surface of the driveshaft (). The lubricant distribution passage () may be disposed at a first axial distance (D) from a first axial end () of the driveshaft (). A first axial end of the overlap region () may be disposed at a second axial distance (D) from the first axial end () of the drive shaft (). The first axial distance (D) is greater than the second axial distance (D). 1. A compressor comprising:a compression mechanism; anda driveshaft driving the compression mechanism, the driveshaft including a first axially extending passage, a second axially extending passage, and a lubricant distribution passage, wherein:the first axially extending passage and the second axially extending passage are radially offset from each other and intersect each other at an overlap region,the first and second axially extending passages are in fluid communication with each other at the overlap region,the lubricant distribution passage extends from the first axially extending passage through an outer diametrical surface of the driveshaft,the lubricant distribution passage is disposed at a first axial distance from a first axial end of the driveshaft,a first axial end of the overlap region is disposed at a second axial distance from the first axial end of the driveshaft,the first axial distance is greater than the second axial distance.2. The ...

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Номер записи: 59
24-01-2019 дата публикации

CONCENTRIC VANE COMPRESSOR

Номер: US20190024661A1
Автор: Wood Mark W.
Принадлежит:

A positive displacement device includes a first cylinder, a second cylinder disposed within the first cylinder, and a third cylinder disposed around the first cylinder. An interior surface of the first cylinder and an exterior surface of the second cylinder define an inner cavity. An exterior surface of the first cylinder and an interior surface of the third cylinder define an outer cavity. A partition between the interior surface of the first cylinder and the exterior surface of the second cylinder divides the inner cavity into inner regions, and another partition between the exterior surface of the first cylinder and the interior surface of the third cylinder divides the outer cavity into outer regions. The second cylinder and the third cylinder orbit with respect to the first cylinder to create alternating regions of high pressure and low pressure in the inner regions and the outer regions. 1. A positive displacement device comprising:a first cylinder having a wall with an interior surface and an exterior surface;a vane slidably extending through the wall of the first cylinder, the vane having a first tip and a second tip;a second cylinder disposed within the first cylinder, the second cylinder having an exterior surface, the interior surface of the first cylinder and the exterior surface of the second cylinder defining an inner cavity therebetween, the vane moveable with respect to the second cylinder and in sealing contact between the interior surface of the first cylinder and the exterior surface of the second cylinder to divide the inner cavity into a first inner region and a second inner region, the first tip of the vane in contact with the exterior surface of the second cylinder;a third cylinder disposed around the first cylinder, the third cylinder having an interior surface, the exterior surface of the first cylinder and the interior surface of the third cylinder defining an outer cavity therebetween, the vane moveable with respect to the third cylinder ...

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Номер записи: 60
23-01-2020 дата публикации

DUAL DRIVE CO-ROTATING SPINNING SCROLL COMPRESSOR OR EXPANDER

Номер: US20200025199A1
Автор: Nicholas Nathan D., Wilson John P.D.
Принадлежит:

A dual-drive co-rotating scroll device includes a housing; a first scroll rotatably mounted within the housing via a first cylindrical extension and a first plurality of bearings, and having a first axis of rotation; and a second scroll rotatably mounted within the housing via a second cylindrical extension and a second plurality of bearings, and having a second axis of rotation different than the first axis of rotation. At least one of the first cylindrical extension and the second cylindrical extension may comprise a plurality of permanent magnets and operate as a rotor of a first motor. An Oldham ring may be positioned between the first scroll and the second scroll and configured to maintain a relative angular position between the first scroll and the second scroll. 1. A scroll device comprising:a housing;a first scroll rotatably mounted within the housing via a first cylindrical extension and a first plurality of bearings, the first scroll having a first axis of rotation;a second scroll rotatably mounted within the housing via a second cylindrical extension and a second plurality of bearings, the second scroll having a second axis of rotation different than the first axis of rotation;wherein at least one of the first cylindrical extension and the second cylindrical extension comprises a plurality of permanent magnets and operates as a rotor of a first motor; andan Oldham ring positioned between the first scroll and the second scroll and configured to maintain a relative angular position between the first scroll and the second scroll.2. The scroll device of claim 1 , wherein the first motor is operably connected to the first scroll and a second motor is operably connected to the second scroll.3. The scroll device of claim 2 , further comprising a controller for controlling an operating speed of the first motor and of the second motor.4. The scroll device of claim 1 , wherein the first plurality of bearings comprises a first bearing positioned proximate a first ...

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Номер записи: 61
23-01-2020 дата публикации

SCROLL COMPRESSOR, REFRIGERATION CYCLE APPARATUS, AND SHELL

Номер: US20200025200A1
Автор: ISHIZONO Fumihiko, Koyama Shuhei, MATSUI Tomokazu, TAKAI Akihito
Принадлежит:

A scroll compressor includes a frame holding an orbiting scroll configured to slide, a fixed scroll configured to form a compression chamber together with the orbiting scroll, and a shell accommodating the frame and the fixed scroll. The shell includes a first inner wall surface and a first protrusion protruding from the first inner wall surface to position the fixed scroll, and the fixed scroll is fixed to the first inner wall surface. 1. A scroll compressor , comprising:a frame holding an orbiting scroll configured to slide;a fixed scroll configured to form a compression chamber together with the orbiting scroll; anda shell accommodating the frame and the fixed scroll,the shell including a first inner wall surface, a first protrusion protruding from the first inner wall surface to position the fixed scroll, a second inner wall surface, and a second protrusion protruding from the second inner wall surface to position the frame,the fixed scroll being fixed to the first inner wall surface,the frame being fixed to the second inner wall surface.2. The scroll compressor of claim 1 , whereinthe orbiting scroll has a side surface located in a radially outermost portion of the orbiting scroll, andthe side surface of the orbiting scroll and an inner wall surface of the shell face each other.3. (canceled)4. The scroll compressor of claim 1 , wherein the second inner wall surface is formed on an inner wall surface of the first protrusion.5. The scroll compressor of claim 1 , wherein the first inner wall surface is formed to have an inner diameter that is larger than an inner diameter of the second inner wall surface.6. The scroll compressor of claim 1 , whereinthe shell includesa main shell with both ends opened,a first shell covering an opening port on one end side of the main shell, anda second shell covering an opening port on an other end side of the main shell,a first positioning surface for positioning the fixed scroll is formed at a part of the first protrusion that is ...

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Номер записи: 62
28-01-2021 дата публикации

MOTOR-DRIVEN ROOTS PUMP

Номер: US20210025388A1
Автор: Hirano Takayuki, KASHIWA Shintaro, MASAKI Daisuke, SHINODA Fumiya, TAKANI Naoki
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven Roots pump includes a housing, a drive shaft and a driven shaft that have axial lines parallel with each other, and a gear chamber. The housing includes a first partition that has a first defining surface, a second partition having a second defining surface, and a relief recess. An addendum circle of the drive gear and an addendum circle of the driven gear intersect with each other at a first intersection point. A plane that includes both the axial lines is defined as an imaginary plane. The first intersection point is located on a side of the imaginary plane on which the drive gear and the driven gear start meshing with each other. An opening of the relief recess is opposed to the first intersection point and is arranged in a region on a side of the imaginary plane on which the first intersection point is located. 1. A motor-driven Roots pump , comprising:a housing;a drive shaft and a driven shaft that are rotationally supported by the housing, the drive shaft and the driven shaft having axial lines that are parallel with each other;a drive gear that is fixed to the drive shaft;a driven gear that is fixed to the driven shaft and meshes with the drive gear;a drive rotor that is provided on the drive shaft;a driven rotor that is provided on the driven shaft and meshes with the drive rotor;an electric motor that is configured to rotate the drive shaft;a motor chamber that is defined in the housing and accommodates the electric motor;a gear chamber that is defined in the housing and accommodates the drive gear and the driven gear, oil being sealed in the gear chamber; anda rotor chamber that is defined in the housing and accommodates the drive rotor and the driven rotor, whereinthe motor chamber, the gear chamber, and the rotor chamber are arranged in order along the axial line, a first partition that separates the gear chamber and the motor chamber from each other in an axial direction of the drive shaft and includes a first defining surface that ...

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Номер записи: 63
28-01-2021 дата публикации

VACUUM PUMP WITH AN OIL MANAGEMENT SYSTEM

Номер: US20210025393A1
Автор: Hong Tinggui
Принадлежит: Fieldpiece Instruments, Inc.

A vacuum pump system includes an air-cooled, O-ring sealed vacuum pump and an oil management system with an LED illuminated clear tank for observation of the oil condition as well as a large oil inlet and outlet for rapid and safe oil changes while the pump is operating. The oil management system is also configured to prevent oil from the sump from being drawn into an evacuated AC/R system when the pump is stopped and the intake ports are not sealed from the high vacuum AC/R system. The oil management system includes a preferential vacuum relief system that allows air instead of the oil from the sump to be drawn back into the evacuated lines. 1. A method of changing the oil in a vacuum pump system comprising the steps of: a vacuum pump with a spring biased oil bottle support platform with a raised and lowered positions and an empty oil bottle having an opening and a removable cap to open and close the opening;', 'an oil management system with an oil reservoir having a cover and a sump with oil, the sump having a drain port with a drain valve, the drain valve having an open and a closed position, the oil management system is optionally enclosed by a closeable oil management door;', 'an oil change reservoir in fluid communication with the oil management system and the vacuum pump, the oil change reservoir sized to contain sufficient oil to support vacuum pump operations while the oil management system is drained and refilled;', 'removing the cap from opening of the empty oil bottle;', 'opening the oil management door;', 'inclining the oil bottle support platform against the bias spring into the lowered position;', 'inserting the empty oil bottle between the support platform and the drain port;', 'raising the oil bottle support platform to the raised position to engage the opening of the empty oil bottle with the drain port;', 'rotating the drain valve to the open position to allow the oil in the sump to drain into the oil bottle;', 'rotating the drain valve into the ...

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Номер записи: 64
02-02-2017 дата публикации

VANE COMPRESSOR

Номер: US20170030353A1
Автор: HATTORI Yuya, MATSUDA Kunihisa, MORI Tatsushi, NAGANO Hiroki
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A vane compressor includes a housing having therein a suction chamber, a discharge chamber having a cover, and a rotor chamber, a rotor having therein a plurality of vane slots, and a plurality of vanes. The housing includes a partition that has a first surface forming the other surface of the rotor chamber and a second surface and separates the rotor chamber from the discharge chamber. An intermediate pressure chamber having a pressure that is lower than the discharge chamber and higher than the suction chamber is formed between the partition and the cover. A part of the second surface and a part of a covering surface of the discharge chamber cover are spaced away from each other by the intermediate pressure chamber. The intermediate pressure chamber is disposed so as to overlap at least a part of the other surface of the rotor chamber. 1. A vane compressor comprising:a housing having therein a suction chamber, a discharge chamber, and a rotor chamber;a rotor that is disposed in the rotor chamber so as to be rotatable about an axis of rotation and has therein a plurality of vane slots;a plurality of vanes that is provided in the respective vane slots so as to be slidable in and out of the vane slots; anda plurality of compression chambers formed by one surface of the rotor chamber, an inner peripheral surface of the rotor chamber, the other surface of the rotor chamber, an outer peripheral surface of the rotor, and the vanes, whereinthe housing includes a partition that separates the rotor chamber from the discharge chamber,the partition has a first surface forming the other surface of the rotor chamber and a second surface that is located opposite to the first surface in the direction of the axis of rotation,the discharge chamber has therein a cover that is fixed to the partition and has a covering surface facing the second surface,an intermediate pressure chamber is formed between the partition and the cover, the intermediate pressure chamber spacing a part of ...

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Номер записи: 65
02-02-2017 дата публикации

Compressor With Thermally-Responsive Modulation System

Номер: US20170030354A1
Автор: Robert C. Stover
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a first scroll, a second scroll and a modulation system. The first scroll may include a first endplate and a first spiral wrap. The second scroll may include a second endplate and a second spiral wrap interleaved with the first spiral wrap and cooperating to form a plurality of working fluid pockets therebetween. The modulation system may include a temperature-responsive displacement member that actuates in response to a temperature within a space rising above a predetermined threshold. Actuation of the displacement member may be controlled to control a capacity of the compressor.

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Номер записи: 66
04-02-2016 дата публикации

REVOLVING PISTON ROTARY COMPRESSOR WITH STATIONARY CRANKSHAFT

Номер: US20160032925A1
Автор: Dreiman Nelik I.
Принадлежит:

A revolving piston rotary compressor comprises, in combination, the following: a compressor pump; an internal suction gas delivery system which eliminates an external accumulator, excludes a direct distribution of a refrigerant to the suction chamber and performs double-stage liquid-gas separation to prevent slugging, provides cooling of the motor and supercharges refrigerant into suction chamber due to action of an impeller; a discharge system utilizing a tubular discharge valve, a circular expansion cavity equipped with a plurality of reaction nozzles through which the discharge gas is jets ejected rearwards relatively to the intended direction of the revolving piston assembly rotation, said jets that impart driving moment which supplements the main momentum; a lubricating oil delivery system employing a positive displacement oil pump, an oil reservoir formed in the crankshaft and a plurality of oil accumulated annular pockets which prevent formation of “gas lock” condition and accelerate delivery of oil to the bearing and mating surfaces, said oil which will not only lubricate, but will also prevents leakage through the clearances by providing liquid seal with combine pressure-discharge pressure, pumping pressure and pressure developed due to centrifugal forces. An external rotor electric motor of the compressor has been integrated with a pump parts to form the compressor pump arranged on a stationary crankshaft and surrounding by a housing fixed to opposite ends of the crankshaft and having no another contacts with the pump. A stator of the motor is permanently fixed on the stationary crankshaft and the compressor pump components—a rotor block and an eccentrically fit revolving piston assembly are unidirectional spinning around the crankshaft. The rotor block and the revolving piston assembly have no radial clearance internal line contact through which the rotor block transfers an angular moment to the revolving piston assembly. It is not only supplements main ...

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Номер записи: 67
01-02-2018 дата публикации

PACKAGE-TYPE FLUID MACHINE

Номер: US20180030984A1
Автор: AIKAWA Atsushi, Sato Toru
Принадлежит: ANEST IWATA CORPORATION

A package type fluid machine includes at least one intake port which is provided in a housing and communicates with an installation region of a plurality of fluid machine units; a plurality of exhaust paths which is provided inside the housing, and includes a first exhaust path which allows gas passed through the fluid machine of the plurality of fluid machine units to flow, and a second exhaust path different from the first exhaust path; and a single exhaust port which is provided in the housing, communicates with downstream end portions of the plurality of exhaust paths, and collects and discharges the gas flowed through the plurality of exhaust paths. 1. A package type fluid machine including a plurality of fluid machine units installed in a housing , the machine comprising:at least one intake port which is provided in the housing and communicates with an installation region of the plurality of fluid machine units to allow a cooling gas to flow therein;a plurality of exhaust paths which is provided inside the housing, and includes a first exhaust path which allows the gas passed through the fluid machine of the plurality of fluid machine units to flow, and a second exhaust path different from the first exhaust path; anda single exhaust port which is provided in the housing, communicates with downstream end portions of the plurality of exhaust paths, and collects and discharges the gas flowed through the plurality of exhaust paths.2. The package type fluid machine according to claim 1 , wherein the housing has a plurality of side plate portions and a single top plate portion claim 1 , and the exhaust port is provided in the top plate portion.3. The package type fluid machine according to claim 2 , further comprising:a first stacking unit and a second stacking unit in which the fluid machine units are stacked in each of a first installation region and a second installation region respectively, the first installation region and the second installation region being ...

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Номер записи: 68
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 ...

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Номер записи: 69
31-01-2019 дата публикации

TWIST-LOCK, BOLTLESS FIXED SCROLL-TO-FRAME JOINT

Номер: US20190032658A1
Автор: Crum Daniel R., JR. Joseph E., Mlsna Eric S., Ziolkowski
Принадлежит:

A scroll compressor and methods of assembling the scroll compressor are disclosed. The scroll compressor includes a frame aligned about a longitudinal axis of the scroll compressor, the frame including a plurality of extensions extending radially from the longitudinal axis, the plurality of extensions including axially extending frame interlock mechanisms. A fixed scroll support is aligned about the longitudinal axis, the fixed scroll support including a plurality of extensions extending radially from the longitudinal axis, the plurality of extensions including axially extending fixed scroll support interlock mechanisms configured to engage the frame interlock mechanisms upon radial rotation. A fixed scroll wrap is integral with or attached to the fixed scroll support. 1. A scroll compressor , comprising:a shell;a frame aligned about a longitudinal axis of the scroll compressor, the frame being fitted into the shell;a fixed scroll having a fixed scroll wrap and a fixed scroll support, wherein the fixed scroll support is aligned about the longitudinal axis and is secured to the frame in a boltless connection; andan intermediate cap engaging with a surface of the fixed scroll support on an opposite side of the fixed scroll wrap, the intermediate cap being secured to the shell and contacting an annular region of the fixed scroll support to bias the fixed scroll against the frame.2. The scroll compressor of claim 1 , wherein the frame includes a plurality of extensions extending radially from the longitudinal axis claim 1 , the plurality of extensions including axially extending frame interlock mechanisms; andthe fixed scroll support includes a plurality of extensions extending radially from the longitudinal axis, the plurality of extensions including axially extending fixed scroll support interlock mechanisms configured to engage the frame interlock mechanisms upon radial rotation.3. The scroll compressor of claim 2 , wherein at least one of the plurality of frame ...

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Номер записи: 70
31-01-2019 дата публикации

VACUUM PUMP WITH AN OIL MANAGEMENT SYSTEM

Номер: US20190032662A1
Автор: Hong Tinggui
Принадлежит: Fieldpiece Instruments, Inc.

A vacuum pump system includes an air-cooled, O-ring sealed vacuum pump and an oil management system with an LED illuminated clear tank for observation of the oil condition as well as a large oil inlet and outlet for rapid and safe oil changes while the pump is operating. The oil management system is also configured to prevent oil from the sump from being drawn into an evacuated AC/R system when the pump is stopped and the intake ports are not sealed from the high vacuum AC/R system. The oil management system includes a preferential vacuum relief system that allows air instead of the oil from the sump to be drawn back into the evacuated lines. 1. A vacuum pump system comprising:a vacuum pump having a volute and at least one bearing wherein the gas input to the vacuum pump is configured to be above the drive shaft when the vacuum pump system is configured to operate;an oil management system in fluid communication with the vacuum pump, the oil management system having a primary oil reservoir with a first volume and an oil change reservoir with a second volume, wherein the primary oil reservoir and the oil change reservoir are in fluid communication with an oil pump, and wherein the first volume is larger than the second volume; andwherein the second volume is smaller than the vacuum pump volute.2. The vacuum pump system of where the oil management system further comprises:an oil pump discharge port in the oil change reservoir operably connected to the oil pump; andwherein the oil change reservoir is configured to allow oil in the oil change reservoir to overflow the volume of the oil change reservoir and flow into the primary oil reservoir and the oil pump is adapted to circulate oil from the primary oil reservoir to the oil change reservoir.3. The vacuum pump system of where the oil management system further comprises:an oil flow path from the oil change reservoir to the at least one bearing in the vacuum pump.4. The vacuum pump system of wherein the oil change ...

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Номер записи: 71
30-01-2020 дата публикации

MOTOR-OPERATED COMPRESSOR

Номер: US20200032795A1
Автор: CHOI Yicheol, KIM JOOHYUNG, NAM Sanghoon, PARK Taesang
Принадлежит: LG ELECTRONICS INC.

An electric compressor includes a main housing including a motor chamber. The motor chamber includes a driving motor. The compressor includes a frame fixed to one end of the main housing, a first scroll supported by one side surface of the frame, and a second scroll provided between the frame and the first scroll. The second scroll, supported by the frame, makes an orbiting motion upon receiving a rotational force from the driving motor. The second scroll also forms a compression chamber with the first scroll and a back pressure space with the frame. A rear cover coupled to the main housing forms a discharge space with the first scroll. A back pressure flow channel extends through the first scroll and the frame to guide a refrigerant and oil from the compression chamber to the discharge and back pressure spaces. The compressor also includes a plurality of decompression portions. 1. An electric compressor comprising:a main housing including a motor chamber;a driving motor disposed in the motor chamber;a frame fixed to one end of the main housing;a first scroll supported by one side surface of the frame;a second scroll provided between the frame and the first scroll and supported by the frame, the second scroll forming a compression chamber with the first scroll, and forming a back pressure space with the frame, and configured to make an orbiting motion relative to the first scroll when receiving a rotational force from the driving motor to form;a rear cover coupled to the main housing to support one side surface of the first scroll and forming a discharge space with the first scroll;a back pressure flow channel extending through the first scroll and the frame and configured to guide a refrigerant and oil discharged from the compression chamber to the discharge space and the back pressure space;a first decompression portion provided at a first position between the rear cover and the first scroll, the first decompression portion being configured to reduce a pressure of ...

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Номер записи: 72
30-01-2020 дата публикации

FLUID COMPRESSOR

Номер: US20200032797A1
Автор: AHN Sungyong, CHOI Yoonsung, Kim Jinho, LEE Jaeha
Принадлежит:

A fluid compressor is provided. The fluid compressor includes a case including an inlet configured to introduce fluid to be compressed, a compression unit including a compression chamber configured to compress the fluid introduced into the case, and a discharge port configured to discharge the compressed fluid to the outside of the compression chamber, a motor configured to drive the compression unit, and a valve configured to open and close the discharge port. The valve includes a fastening portion coupled to the compression unit to be spaced a first distance from the discharge port. 1. A fluid compressor comprising:a case comprising an inlet configured to receive and direct fluid to an inside of the case;a compression unit that defines a compression chamber configured to compress the fluid in the case and a discharge port configured to discharge compressed fluid to an outside of the compression chamber;a motor disposed inside the case and configured to drive the compression unit; anda valve coupled to the compression unit and configured to open and close at least a portion of the discharge port,wherein the valve comprises a fastening portion coupled to the compression unit and spaced apart from the discharge port by a first distance.2. The fluid compressor according to claim 1 , wherein the fastening portion comprises a coupling portion coupled to a surface of the compression unit claim 1 , andwherein the fluid compressor further comprises a first spacing member disposed between the coupling portion and the surface of the compression unit and configured to maintain the first distance between the valve and the compression unit.3. The fluid compressor according to claim 2 , wherein the valve has a free end that extends from the coupling portion toward the discharge port to thereby overlap with the discharge port.4. The fluid compressor according to claim 1 , further comprising a retainer configured to limit a displacement of the valve based on the valve opening the ...

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Номер записи: 73
30-01-2020 дата публикации

IMPROVEMENTS IN ROTARY CLAW PUMPS

Номер: US20200032799A1
Автор: FLEMING John
Принадлежит:

A Rotary Claw Pump with at least one pair of intermeshing rotors has the same shape within a tolerance of ±3% of the radii from edges to rotational centers. A convex portion of the claws has a nominal uniform rate of radius change with angle of rotation. There may be multiple stages wherein the thickness of each successive rotor pair maintains profile but has a thickness within 20% of the thickness of the first stage rotor pair multiplied by the inverse products of the compression ratios of the preceding stages. A discharge port is at least partially uncovered at any position of rotation from where intermeshing claw rotor tips are closest to where they are most distant. The discharge port is at least partially connected with a region connected with the rotor tips of both claws during rotation. The discharge port limits pressure increase in the region. 1. A Rotary Claw Pump wherein at least one pair of intermeshing rotors has the same shape within a tolerance of plus or minus 3 percent of the radii from the edges of their shapes to their centers of rotation and wherein on a convex portion of the claws there is a nominal uniform rate of change of radius with angle of rotation.2. A Rotary Claw Pump as in where there are multiple stages wherein the thickness of each successive rotor pair does not vary in profile but has a thickness within 20% of the thickness of the first stage rotor pair multiplied by the inverse products of the compression ratios of the preceding stages.3. A Rotary Claw Pump wherein a discharge port is at least partially uncovered at any position of rotation from where a pair of intermeshing claw rotor tips are at their closest point of approach to where the said claw tips are at their furthest apart and wherein said discharge port is at least partially connected with a region connected with the rotor tips of both the said claws during said positions of rotation and the discharge port thereby at least limits pressure increase in the said region.4. A ...

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Номер записи: 74
05-02-2015 дата публикации

INTERMEDIATE OIL SEPARATOR FOR IMPROVED PERFORMANCE IN A SCROLL COMPRESSOR

Номер: US20150037183A1
Автор: Benco Michael Gerard, Lakowske Rodney, Rood Jerry Allen, Sauls John Robert, Smerud Scott Joseph
Принадлежит:

An oil lubrication system for a multi-stage compressor separates oil from a refrigerant at an intermediate pressure following the first stage of compression and then routes the separated oil at the intermediate pressure to the compressor suction cavity bearings at the intermediate pressure, thus avoiding further compression of oil in subsequent stages of compression. The efficiency of the multi-stage compressor can be increased by not raising the pressure of the oil through the subsequent stages of compression. 1. A multi-stage compressor lubrication system , comprising: [ a suction side comprising a suction side bearing oil inlet; and', 'a discharge side; and, 'an input stage comprising, a suction side comprising a suction side bearing oil inlet; and', 'a discharge side, wherein the input stage discharge side is fluidically coupled to the output stage suction side via a refrigerant pipe; and, 'an output stage comprising], 'a multi-stage compressor, comprisingan oil separator fluidically coupled to the input stage discharge side, the output stage suction side, and both the input stage suction side bearing oil inlet and the output stage suction side bearing oil inlet, wherein the oil separator is configured to receive a refrigerant and oil mixture discharged via the input stage discharge side, separate the oil from the refrigerant in the discharged mixture, fluidically transfer the separated refrigerant to the output stage suction side, and fluidically transfer the separated oil to both the input stage suction side bearing oil inlet and the output stage suction side bearing oil inlet.2. The multi-stage compressor lubrication system according to claim 1 , wherein the multi-stage compressor is a two-stage scroll compressor.3. The multi-stage compressor lubrication system according to claim 1 , wherein the multi-stage compressor is a two-stage scroll compressor comprising a first stage suction side orbiting scroll hydrodynamic thrust bearing.4. The multi-stage ...

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Номер записи: 75
05-02-2015 дата публикации

Oldham coupling with enhanced key surface in a scroll compressor

Номер: US20150037190A1
Автор: Brennon J. Swaney, Jerry Allen Rood, Scott Joseph Smerud
Принадлежит: Trane International Inc

An Oldham coupling structure for a scroll compressor decreases Oldham coupling pressure loading without increasing compressor diameter or significantly increasing orbiting scroll or Oldham coupling inertia. The Oldham coupling key height and area are increased by recessing the key face into the ring portion of the Oldham coupling, increasing the key height and adding pads to the involute side of the orbiting scroll base plate to extend the key slot, potentially resulting in reduced compressor diameter and/or reduced orbiting scroll and Oldham coupling inertia.

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Номер записи: 76
04-02-2021 дата публикации

SCROLL COMPRESSOR

Номер: US20210033092A1
Автор: Bae Mooseong, CHO Sungchan, CHO Yanghee, Noh Jongsoo, Oh Sungkwang, PARK Sunghyuk
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is a scroll compressor capable of expanding a compression space and accordingly increasing a design volume ratio. The scroll compressor includes: a main body; a fixed scroll fixed inside the main body; an orbiting scroll orbiting the fixed scroll; and a plurality of compressing portions respectively provided in the fixed scroll and the orbiting scroll, wherein each compressing portion includes a circular arc portion of which a curvature is constant, a curved portion positioned in an inside of the circular arc portion and spaced a preset distance from the circular arc portion, and a connection portion connecting the circular arc portion to the curved portion, wherein a curvature of the connection portion changes from the first circular arc portion to the second circular arc portion. 1. A scroll compressor comprising:a main body;a fixed scroll fixed inside the main body;an orbiting scroll orbiting the fixed scroll; anda plurality of compressing portions respectively provided in the fixed scroll and the orbiting scroll,wherein each compressing portion comprisesa circular arc portion of which a curvature is constant,a curved portion positioned in an inside of the circular arc portion and spaced a preset distance from the circular arc portion, anda connection portion connecting the circular arc portion to the curved portion, wherein a curvature of the connection portion changes from the circular arc portion to the curved portion.2. The scroll compressor of claim 1 , wherein the connection portion is in a shape of a cosine curve claim 1 , a Bezier curve claim 1 , a Hermite curve claim 1 , and a B-spline curve.3. The scroll compressor of claim 2 , wherein an included angle α of a first line segment connecting one end of the connection portion to a center of the compressing portion and a second line segment connecting the other end of the connection portion to the center of the compressing portion is 100° or more.4. The scroll compressor of claim 1 , wherein claim ...

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Номер записи: 77
11-02-2016 дата публикации

TWO-SHAFT ROTARY PUMP

Номер: US20160040669A1
Автор: HARAYAMA Shingo, MIYAZAWA Shun, YAMADA Humihiko, YOSHIDA Yosuke
Принадлежит:

Provided is a two-shaft rotary pump which is capable of improving reliability and operation efficiency by preventing an exhaust gas from flowing backward into a pump as much as possible, preventing the interior of the pump form being excessively compressed as much as possible, and suppressing temperature rise in the pump. A two-shaft rotary pump in which two rotating shafts () provided with rotors () are supported by bearings, such that the two rotors () are rotated in a noncontact manner with a small clearance kept therebetween and the two rotors () are rotated in a noncontact manner with a small clearance between an inner surface of a cylinder () and the two rotors, and a gas sucked into the cylinder () and compressed is discharged from the cylinder (), wherein an escape hole capable of letting a part of the compressed gas escape is provided in at least one of end wall portions () constituting both ends of the cylinder () and opened in the axial direction of the rotating shafts (). 115-. (canceled)16. A two-shaft rotary pump , in which two rotating shafts provided with rotors are supported by bearings , such that the two rotors are rotated in a noncontact manner with a small clearance kept therebetween and the two rotors are rotated in a noncontact manner with a small clearance between an inner surface of a cylinder and the two rotors , and a gas sucked into the cylinder and compressed is discharged from the cylinder ,wherein at least one escape hole capable of letting a part of the compressed gas escape is provided in at least one of end wall portions constituting both ends of the cylinder and opened in the axial direction of the rotating shafts, anda check valve, which opens when an inner pressure of the cylinder is higher than a prescribed pressure and closes when the inner pressure of the cylinder is lower than the prescribed pressure, is provided to the escape hole.17. The two-shaft rotary pump according to claim 16 , wherein the check valve is a reed valve. ...

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Номер записи: 78
11-02-2016 дата публикации

SCROLL COMPRESSOR

Номер: US20160040671A1
Автор: CHOI Yongkyu, KIM Cheolhwan, Lee Kangwook
Принадлежит:

A scroll compressor is disclosed which prevents leakage of refrigerant from a compression chamber and abrasion of bearings between a rotating shaft and an orbiting scroll by reducing the tilting angle of the orbiting scroll, because the allowable bearing angle is equal to or larger than the tilting angle, where the allowable bearing angle θ refers to the maximum angle at which the orbiting scroll is tilted with respect to the rotating shaft, and the tilting angle β refers to the angle at which the orbiting scroll is tilted with respect to the plate. 1. A scroll compressor comprising:a frame disposed in an internal space of a casing;a fixed scroll fixedly disposed in the internal space of the casing and having a fixed wrap;an orbiting scroll that is disposed between the frame and the fixed scroll and having a orbiting wrap engages with the fixed wrap of the fixed scroll to form a compression chamber;a rotating shaft comprising an eccentric portion eccentrically connected to the orbiting scroll; andbearings disposed between the orbiting scroll and the eccentric portion of the rotating shaft,wherein allowable bearing angle is equal to or larger than tilting angle, where the allowable bearing angle θ refers to the maximum angle at which the orbiting scroll is tilted due to a gap between the orbiting scroll and the rotating shaft, and the tilting angle β refers to the maximum angle at which the orbiting scroll is tilted due to a gap between the orbiting scroll and the frame or fixed scroll,2. The scroll compressor of claim 1 , wherein claim 1 , if the diameter tolerance for the bearings is denoted by α claim 1 , the length of the bearings is denoted by L claim 1 , the back side tolerance for the orbiting scroll corresponding to a gap between the orbiting scroll and the frame is denoted by δ claim 1 , the radius of a thrust surface of the frame is denoted by D/2 claim 1 , and the orbital radius of the eccentric portion is denoted by r claim 1 , then the relationship α/L ...

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Номер записи: 79
11-02-2016 дата публикации

Compressor

Номер: US20160040672A1
Автор: Byeongchul Lee, Cheolhwan Kim, Kangwook Lee
Принадлежит: LG ELECTRONICS INC

A compressor is provided that may include a passage separator provided between an electric motor drive and a compression device to separate a refrigerant passage from an oil passage. The passage separator may include a first partition wall and a second partition wall. The first partition wall may be disposed between an inner circumferential surface of a casing and a discharge hole of the compression device, and the second partition wall may be disposed between the discharge hole and a balance weight. Accordingly, the refrigerant passage may be separated from the oil passage between the compression device and electric motor drive, thereby efficiently recovering oil to an oil storage space.

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Номер записи: 80
11-02-2016 дата публикации

SCROLL COMPRESSOR

Номер: US20160040673A1
Автор: KIM Cheolhwan, KIM Taekyoung, Lee Kangwook
Принадлежит:

A scroll compressor is provided that may prevent an oil-feeding hole from being blocked due to a high pressure refrigerant, which is compressed in compression chambers and introduced into the oil-feeding hole through an oil-feeding slit, by blocking one of both end portions of the oil-feeding slit, adjacent to the compression chambers, when the oil-feeding hole is formed through an outer circumferential surface of a bearing and the oil-feeding slit, which communicates with the oil-feeding hole, is formed on the outer circumferential surface. This may allow for smooth oil supply onto the outer circumferential surface of the bearing through the oil-feeding hole, thereby enhancing a bearing performance. Also, the oil-feeding hole or slit may be formed at a closest position to an oil feeding-required section, not within the section. This may allow for quick oil supply into the oil feeding-required section, resulting in further enhanced bearing performance. 1. A scroll compressor , comprising:a casing;a motor disposed in an inner space of the casing;a frame fixed in the inner space of the casing at one side of the motor;a fixed scroll fixed to the frame and provided with a fixed wrap;an orbiting scroll located between the frame and the fixed scroll and having an orbiting wrap engaged with the fixed wrap of the fixed scroll to form compression chambers, wherein the orbiting scroll performs an orbiting motion; anda rotational shaft coupled to the orbiting scroll and provided with an eccentric portion eccentrically coupled to the orbiting scroll, wherein the eccentric portion overlaps the orbiting wrap in a radial direction, and wherein an oil-feeding slit is formed on an outer circumferential surface of the eccentric portion, and at least one end of the oil-feeding slit in an axial direction is blocked to block a flow of high pressure refrigerant from the compression chambers along the oil feeding slit.2. The scroll compressor of claim 1 , wherein an end of the oil-feeding ...

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Номер записи: 81
11-02-2016 дата публикации

Electric compressor

Номер: US20160040674A1
Автор: Hiroshi Fukasaku
Принадлежит: Toyota Industries Corp

An electric compressor includes a compression part, a motor that drives the compression part, a cylindrical housing that accommodates therein the compression part and the motor, a supporting member, and a first vibration damper. The supporting member supports the housing and is configured to be fixed to a target to which the compressor is attached. The first vibration damper is disposed between the housing and the supporting member so as to keep the housing free from contact with the supporting member and the target. The first vibration damper has therein a hollow enclosed space.

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Номер записи: 82
08-02-2018 дата публикации

Compressor and Bearing Assembly

Номер: US20180038371A1
Автор: Ahire Pankaj Nimbaji, Jorwekar Pavankumar, Juge Vinayak Madanrao, Ramaswamy Ramprasad
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor is provided and may include a shell, a hub, an insert, and at least one collar. The hub may be disposed within the shell and define an axis of rotation. The hub may include an axially extending aperture. The insert may be disposed within the aperture. The at least one collar may be disposed about the hub. 1. A compressor comprising:a shell;a compression mechanism disposed within said shell;a drive shaft drivingly engaged with the compression mechanism;a hub disposed within said shell and defining an axis of rotation, said hub including an axially extending aperture, said drive shaft engaged with said axially extending aperture;a bearing insert disposed within said aperture and rotatably supporting said drive shaft; andan arresting arrangement adapted to restrain relative movement between said bearing insert and said hub, said arresting arrangement including a retainer disposed on an inner diameter of the hub to maintain said bearing insert within said hub.2. The compressor of claim 1 , wherein said retainer is a ring disposed within said hub.3. The compressor of claim 2 , wherein said ring includes a plurality of longitudinally extending legs claim 2 , said legs adapted to engage with an inner periphery of said hub restraining movement of said ring with respect to said hub claim 2 , and thereby restraining movement of said bearing insert with respect to said hub.4. The compressor of claim 3 , wherein said ring further includes micro projections between said legs and extending radially from said ring claim 3 , said micro projections adapted to engage with said inner periphery of said hub claim 3 , thereby providing anti-rotation support of said ring with respect to said hub.5. The compressor of claim 3 , wherein said ring is an elliptical retaining ring.6. The compressor of claim 5 , wherein said elliptical retaining ring is press fit into said hub to retain said bearing insert in said hub and restrict spinning and axial walk out of said bearing insert.7 ...

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Номер записи: 83
18-02-2016 дата публикации

MULTI-CYLINDER ROTARY COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE SYSTEM INCLUDING THE MULTI-CYLINDER ROTARY COMPRESSOR

Номер: US20160047379A1
Автор: IWASAKI Toshiaki, Kato Taro, Maeyama Hideaki, MOROE Shogo, SUGIURA Kanichiro, Takahashi Shinichi, Yokoyama Tetsuhide
Принадлежит: Mitsubishi Electric Corporation

A multi-cylinder rotary compressor includes plural compression mechanism parts. A drawing force is applied to a vane of at least one of the compression mechanism parts radially outward with respect to a drive shaft, making a pressing force pressing the vane toward a piston smaller than in other compression mechanism parts. In a normal state, a pressing force due to a gas pressure difference between a suction pressure and a discharge pressure is larger than the drawing force, and a vane front end is pressed against a rotary piston peripheral wall. When the drawing force becomes greater than the pressing force, the vane front end is moved to separate from the rotary piston peripheral wall with a space through which oil is introduced from a sealed container, and a retention mechanism retains the vane separated from the piston, and the compression mechanism part switches to an uncompressed state. 1: A multi-cylinder rotary compressor comprising:a drive shaft including a plurality of eccentric-pin shaft portions;an electric motor configured to drive and rotate the drive shaft;a plurality of compression mechanisms; anda sealed container housing the electric motor and the plurality of compression mechanisms and storing lubricating oil at a bottom thereof, a cylinder having a cylinder chamber into which low-pressure refrigerant is sucked from a suction pressure space and from which compressed high-pressure refrigerant is discharged to a discharge pressure space,', 'a ring-shaped piston slidably attached to each of the plurality of eccentric-pin shaft portions of the drive shaft and configured to eccentrically rotate in the cylinder chamber,', 'a vane configured to separate the cylinder chamber into two spaces when a front end of the vane is pushed against an outer peripheral surface of the piston,', 'a vane groove housing the vane in such a manner that the vane reciprocates therein and being open to the cylinder chamber, and', 'a vane rear chamber housing a rear end of the ...

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Номер записи: 84
18-02-2016 дата публикации

SCROLL COMPRESSOR

Номер: US20160047380A1
Автор: KIM Cheolhwan, KIM Taekyoung, Lee Byeongchul
Принадлежит:

A scroll compressor is provided that may include a casing; an electric motor drive having a stator fixed within the casing, and a rotor rotatably provided within the stator; a rotational shaft coupled to the rotor to rotate along with the rotor; a compression device disposed at a lower portion of the electric motor drive to receive a rotational force from the rotational shaft and compress a refrigerant; and an oil storage space located within the casing. A plurality of oil discharge paths to allow oil accumulated at an upper portion thereof to be discharged to the oil storage space may be formed on an outer circumferential surface of the compression device to be separated from each other, and an overall cross-sectional area of the plurality of oil discharge paths may be about 2 to about 12% of an inner diameter cross-sectional area of the casing brought into contact with or separated from an outer circumferential surface of the compression device in the compression device. 1. A scroll compressor , comprising:a casing;an electric motor drive having a stator fixed within the casing, and a rotor rotatably provided within the stator;a rotational shaft coupled to the rotor to rotate along with the rotor;a compression device disposed at a lower portion of the electric motor drive receive a rotational force from the rotational shaft and compress a refrigerant; andan oil storage space located within the casing, wherein a plurality of oil discharge paths to allow oil accumulated at an upper portion thereof to be discharged to the oil storage space is formed on an outer circumferential surface of the compression device to be separated from each other, and wherein an overall cross-sectional area of the plurality of oil discharge paths is about 2 to about 12% of an inner diameter cross-sectional area of the casing brought into contact with or separated from an outer circumferential surface of the compression device.2. The scroll compressor of claim 1 , wherein the compression ...

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Номер записи: 85
16-02-2017 дата публикации

MULTIPLE COMPRESSOR CONFIGURATION WITH OIL-BALANCING SYSTEM

Номер: US20170045052A1
Автор: "DAMICO Adam J.", BROSTROM Troy Richard, GROSHEK Jacob A., KAMAT Reema, PELSOR Douglas P.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

An oil balancing system for a multiple compressor system is provided. The oil balancing system includes an oil equalization line disposed between a first compressor and a second compressor. A first solenoid valve is provided in the oil equalization line. A first signal corresponds to a first oil level in the first compressor. A second signal corresponds to a second oil level in the second compressor. An oil balancing module uses the first signal and the second signal to diagnose an oil imbalance between the first compressor and the second compressor, and applies corrective action, whereby the corrective action includes sending control signals to operate at least one of the first compressor, the second compressor, or the first solenoid valve in a way that eliminates the oil imbalance. 1. An oil balancing system for a multiple compressor system , the oil balancing system comprising:a first compressor;a second compressor;an oil equalization line disposed between the first compressor and the second compressor;a first valve in the oil equalization line;an oil level detection system for generating a first signal corresponding to a first oil level in the first compressor and a second signal corresponding to a second oil level in the second compressor; andan oil balancing module that uses the first signal and the second signal to diagnose an oil imbalance between the first compressor and the second compressor, and applies corrective action, whereby the corrective action comprises sending control signals to change the operating speed of one of the first compressor and the second compressor, and operating the first valve in a way that eliminates or reduces the oil imbalance.2. The oil balancing system of claim 1 , wherein the oil balancing module further uses the first signal and the second signal to verify that the corrective action has eliminated or reduced the oil imbalance.3. The oil balancing system of claim 2 , wherein after the oil imbalance is eliminated claim 2 , the ...

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Номер записи: 86
14-02-2019 дата публикации

CIRCUIT ASSEMBLY HAVING VIBRATION-PROOF FIXING STRUCTURE FOR CIRCUIT COMPONENT, AND ELECTRIC COMPRESSOR FOR VEHICLE

Номер: US20190047371A1
Автор: HIGUCHI Hiroto, TAKASHIGE Takayuki, YAKUSHIJI Shunsuke
Принадлежит: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

A circuit assembly () provided with: a circuit board (); a capacitor () connected to the circuit board (); and a circuit casing (C) configured to house the circuit board () and the capacitor (). The capacitor () is provided with: a component body () including a pair of connection terminals (A and A) to be fixed to the circuit board (); and a first fixing unit () and a second fixing unit () configured to fix the component body () to the circuit casing (C) at both sides. The connection terminals (A and A) are disposed with a fixed line (L) connecting the first fixing unit () and the second fixing unit () interposed therebetween, and both of the pair of connection terminals (A and A) protrudes sideward from the component body () between a first surface of the circuit board () and the circuit casing (C), and extends toward the circuit board (). Distal ends (P) of each of the connection terminals (A and A) are fixed to the circuit board () in a vicinity of the first fixing unit (). 1. A circuit assembly comprising:a circuit board;a circuit component connected to the circuit board; anda casing configured to house the circuit board and the circuit component;wherein the circuit component includesa component body including a pair of connection terminals to be fixed to the circuit board, anda first fixing portion and a second fixing portion configured to fix the component body to the casing,the pair of connection terminals are disposed with a fixed line connecting the first fixing portion and the second fixing portion interposed therebetween,both of the pair of connection terminals project sideward from the component body between a first surface of the circuit board and the casing and extend toward the circuit board, anddistal ends of the pair of connection terminals are fixed to the circuit board in a vicinity of at least one of the first fixing portion and the second fixing portion.2. The circuit assembly according to claim 1 , wherein both of the pair of connection ...

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Номер записи: 87
08-05-2014 дата публикации

INTERPHASE INSULATING SHEET FOR ROTATING ELECTRIC MACHINE, AND MOTOR-DRIVEN COMPRESSOR

Номер: US20140127055A1
Автор: FUKASAKU Hiroshi, HIRANO Taizo, HORIBA Tatsuya, OKUYAMA Shinichi
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

An interphase insulating sheet for a rotating electric machine includes a pair of insulating portions and a plurality of bridge pieces. The insulating portions perform interphase insulation between coil ends of coils protruding from both ends of a stator core. Each insulating portion has bridge bases. The bridge pieces are each inserted in one of slots. Each bridge piece extends from a bridge base of one of the insulating portions to a bridge base of the other insulating portion. Each insulating portion has an annular shape having stacked parts that include a bridge base and overlap with each other by a predetermined margin. In the circumferential direction of each insulating portion, the dimension of the stacked parts is set to be less than or equal to the dimension of the bridge pieces. 1. An interphase insulating sheet for a rotating electric machine , whereinthe rotating electric machine includes a stator having an annular stator core,the stator core includes a plurality of teeth and has ends facing opposite directions in an axial direction of the stator core,the teeth are arranged along an inner circumference of the stator core in the circumferential direction,a slot is formed between adjacent teeth,a coil is wounded about the slots by wave winding,the interphase insulating sheet includesa pair of insulating portions that performs interphase insulation between coil ends of the coil, which protrude from the ends of the stator core, and each insulating portion has bridge bases, anda plurality of bridge pieces, each fitted in one of the slots, wherein each bridge piece extends from one of the bridge bases of one of the insulating portions to one of the bridge bases of the other insulating portion, whereineach insulating portion has an annular shape and includes stacked parts that include a respective one of the bridge bases, and the stacked parts overlap with each other by a predetermined margin, andin the circumferential direction of each insulating portion, the ...

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Номер записи: 88
26-02-2015 дата публикации

SEALED COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE APPARATUS INCLUDING THE SEALED COMPRESSOR

Номер: US20150052936A1
Автор: Kato Taro, Maeyama Hideaki, MOROE Shogo, NAGASAWA Hiroki, Nishiki Teruhiko, Shingu Keisuke, Shirafuji Yoshinori, Yokoyama Tetsuhide
Принадлежит: Mitsubishi Electric Corporation

A sealed compressor includes a centrifugal impeller above a rotor to synchronously rotate. A refrigerant rises through a rotor air hole, flows in an upper space, and flows out from a discharge pipe. The centrifugal impeller includes an oil separation plate on the rotor, and plural vanes standing on the oil separation plate, and forms inter-vane flow passages between adjacent vanes, and a vane inner flow passage that guides refrigerant from the rotor air hole to inner entrances of the inter-vane flow passages. Outer exits of the inter-vane flow passages are disposed along an entire circumference, and refrigerant increased in pressure while passing through the inter-vane flow passages flows out from the outer exits to the upper space. The oil separation plate closes a short-circuit passage through which the refrigerant directly flows from the vane inner flow passages to the discharge pipe without passing through the inter-vane flow passages. 1. A sealed compressor comprising:a sealed container that stores lubricant oil at a bottom thereof;a motor that is provided within the sealed container and has a stator and a rotor;a drive shaft attached to the rotor;a compression mechanism that is provided within the sealed container and configured to compress a refrigerant upon rotation of the drive shaft;a centrifugal impeller that is provided above the rotor and configured to rotate in synchronization with the rotor;a rotor air hole that penetrates the rotor in an up-down direction; anda discharge pipe configured to cause the refrigerant, upon flowing into a lower space of the motor, rising through the rotor air hole, and flowing into an upper space of the motor, to flow out from the upper space to an external circuit of the sealed container,wherein the centrifugal impeller includesan oil separation plate and a lower surface partition plate that are provided on an upper side of an upper end of the rotor so as to be spaced apart from each other,a plurality of vanes that stand ...

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Номер записи: 89
25-02-2016 дата публикации

SCROLL COMPRESSOR

Номер: US20160053759A1
Автор: CHOI Yongkyu, KIM Cheolhwan, Lee Byeongchul
Принадлежит:

A compressor is provided. The compressor may include a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers. The fixed wrap and the orbiting wrap may have irregular wrap curves. At least one interference avoiding portion at which a spacing between the wraps is greater than an orbiting radius or at least one gap compensating portion at which the spacing between the wraps is smaller than the orbiting radius, in a state in which a center of the fixed scroll and a center of the orbiting scroll are aligned with each other, may be provided on a sidewall surface of the fixed wrap or the orbiting wrap, whereby frictional loss or abrasion due to interference between the wraps or a refrigerant leakage due to a gap between the wraps may be prevented. 1. A scroll compressor comprising:a fixed scroll having a fixed wrap; andan orbiting scroll having an orbiting wrap engaged with the fixed wrap to form a plurality of compression chambers, wherein the fixed wrap and the orbiting wrap have irregular wrap curves, and wherein at least one interference avoiding portion at which a spacing between the fixed wrap and the orbiting wrap is greater than an orbiting radius or at least one gap compensating portion at which a spacing between the fixed wrap and the orbiting wrap is smaller than the orbiting radius, in a state in which a center of the fixed scroll and a center of the orbiting scroll are aligned with each other, is provided on a sidewall surface of the fixed wrap or the orbiting wrap.2. The scroll compressor of claim 1 , wherein at least one of the fixed wrap or the orbiting wrap has a shape including a plurality of arcs having different diameters and origin points connected together claim 1 , and wherein the at least one interference avoiding portion or the at least one gap compensating portion is located at each portion at which the plurality of arcs having the different diameters and origin points are connected to ...

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Номер записи: 90
25-02-2021 дата публикации

IMPROVED MINIMUM PRESSURE VALVE AND METHOD FOR SERVICING SUCH A VALVE

Номер: US20210054838A1
Автор: DE SCHAMPHELAERE Pieter, MARTENS Kristof Adrien
Принадлежит: ATLAS COPCO AIRPOWER NAAMLOZE VENNOOTSCHAP

The invention relates to a minimum pressure valve () comprising a housing () with the valve inlet () and the valve outlet () connected with each other by means of a chamber and connecting space (), the minimum pressure valve () also comprising a valve body () set up in a chamber () moveably between a closed position in which the valve inlet () is closed and an open position in which the valve inlet () is open, the minimum pressure valve () also comprising components which are provided with a seal and/or sliding parts (), whereby a subassembly () of the minimum pressure valve () can be disassembled and/or assembled through an opening () in the housing (). 121-. (canceled)2210171112222210212011111024263022103117221710ab. A minimum pressure valve () comprising a housing () with a valve inlet () and a valve outlet () connected with each other by means of a chamber and connecting space ( , ) , whereby the minimum pressure valve () also comprises a valve body () that is set up in a chamber () , moveably between , on the one hand , a closed position in which the valve inlet () is closed off and , on the other hand , an open position in which the valve inlet () is open , whereby the minimum pressure valve () also comprises components which are provided with a seal and/or sliding parts ( , , ) , characterised in that a subassembly () of the minimum pressure valve () can be disassembled and/or assembled through an opening () in the housing () , and that the subassembly () has a specific shape so that it can only fit in the housing () of the minimum pressure valve () in one particular way.2310311710. A minimum pressure valve () according to claim 22 , characterised in that the opening () is located in the side wall of the housing () of the minimum pressure valve ().241022242630202136. A minimum pressure valve () according to claim 22 , characterised in that said subassembly () comprises the components which are provided with a seal and/or sliding parts ( claim 22 , claim 22 , ...

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Номер записи: 91
22-02-2018 дата публикации

Scroll-type compressor

Номер: US20180051697A1
Автор: Katsumi Katou, Ryouta NAKAI, Yasuhiro Murakami, Yasuo Mizushima
Принадлежит: Daikin Industries Ltd

A scroll compressor includes a compression mechanism having fixed and movable scrolls to form a fluid chamber. The fixed scroll has an end plate, an outer peripheral wall, and a wrap. The movable scroll has an end plate and a wrap. A scroll oil groove is formed in a sliding contact surface of the outer peripheral wall. Lubricating oil having a high pressure corresponding to a discharge pressure of the compression mechanism is fed into the scroll oil groove. A scroll oil groove is formed in a sliding contact surface of the movable scroll, which slides on the outer peripheral wall. The fixed and movable scroll oil grooves communicate with each other without communicating with the fluid chamber in a first operation. The movable scroll oil groove simultaneously communicates with the fixed scroll oil groove and the fluid chamber in a second operation after the first operation.

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Номер записи: 92
26-02-2015 дата публикации

ELECTRIC COMPRESSOR

Номер: US20150056086A1
Автор: Fujii Akio, KINOSHITA Yusuke, TAKAHATA Junichi, Yano Junya
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

An electric compressor includes a housing accommodating therein a compression mechanism and an electric motor which drives the compression mechanism through a rotating shaft thereof, and an inverter cover which is joined to the housing and accommodates therein an inverter circuit portion. The inverter circuit portion is supported by a base member which is mounted to the housing and includes electrolytic capacitors mounted to the base member in such an orientation that the longitudinal direction of the electrolytic capacitors intersect the axis of the rotating shaft and a capacitor holder for housing the electrolytic capacitors. The electrolytic capacitors and the capacitor holder are disposed at a position radially inward of mounting legs of the base member and also radially inward of an imaginary extension extending in the axial direction. 1. An electric compressor in which a compression mechanism which compresses and discharges fluid , an electric motor which drives the compression mechanism through a rotating shaft thereof and a drive circuit portion which controls operation of the electric motor are disposed along the axis of the rotating shaft , comprising:a housing which accommodates therein the compression mechanism and the electric motor; andto a cover which is joined to the housing and accommodates therein the drive circuit portion, whereinthe drive circuit portion is supported by a base portion which is mounted to the housing;the drive circuit portion has a capacitor which is mounted to the base portion in such an orientation that the longitudinal direction of the capacitor intersects the axis of the rotating shaft and a capacitor holder for housing the capacitor;the base portion has a plurality of receiving portions into which fasteners are tightened; andthe capacitor and the capacitor holder are disposed at a position radially inward of the receiving portions and also radially inward of an imaginary extension of an outline of the housing, the imaginary ...

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Номер записи: 93
15-05-2014 дата публикации

MOTOR-DRIVEN COMPRESSOR

Номер: US20140134014A1
Автор: FUKASAKU Hiroshi, Hishinuma Yumin, Mera Minoru, TAKIMOTO Shuji
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven compressor includes a compression unit, an electric motor, a motor drive circuit, a housing, and a first end plate. The electric motor includes a rotation shaft, a rotor provided with a rotor core, and a stator. The stator includes a state core and a coil. The coil includes first and second coil ends. The rotor core includes a refrigerant passage having a first opening that opens in the compression unit side. The first opening includes a first radially outer region. First and second regions in the housing are in communication through the refrigerant passage. The first end plate includes a first communication port arranged on a first region side end of the rotor core. The first region and the refrigerant passage are in communication through the first opening and first communication port. The first radially outer region is covered by the first end plate. 1. A motor-driven compressor comprising:a compression unit; rotation of the rotation shaft drives the compression unit,', 'the stator includes a stator core, which is provided with teeth, and a coil, which is arranged in a slot between the teeth,', 'the coil includes a first coil end, which is located at a compression unit side, and a second coil end, which is located at an opposite side of the compression unit side,', 'the rotor core includes a refrigerant passage extending through the rotor core along an axial direction of the rotation shaft,', 'the refrigerant passage includes a first opening that opens in the compression unit side, and', 'the first opening includes a first radially outer region located at an outer side of the first opening in the radial direction of the rotation shaft;, 'an electric motor including a rotation shaft coupled to the compression unit, a rotor rotated integrally with the rotation shaft and including a rotor core, and a stator surrounding the rotor, wherein'}a motor drive circuit that drives the electric motor; the stator is fixed to an inner surface of the housing,', ' ...

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Номер записи: 94
10-03-2022 дата публикации

A SCROLL COMPRESSOR INCLUDING A BASEPLATE HAVING A MOUNTING BASE AND A CYLINDRICAL RIM SECURED BY A DOUBLE-WELDED T-JOINT

Номер: US20220074412A1
Автор: Bou Dargham Remi, Daussin Arnaud, GENEVOIS David, Gross Dominique, Montes Cyril
Принадлежит:

The scroll compressor () including a hermetic enclosure (), a compression unit () configured to compress refrigerant, and an electric motor () configured to drive the compression unit () via a drive shaft (), the hermetic enclosure () including a midshell (), an upper cap () and a baseplate (), the baseplate () including a mounting base () having a plate shape and including a central portion, and a cylindrical rim surrounding the central portion and extending upwardly, the cylindrical rim () being secured to the mounting base () by a double-welded T-joint (), the double-welded T-joint () including an inner welding seam connecting an inner surface of the cylindrical rim () to the mounting base (), and an outer welding seam connecting an outer surface of the cylindrical rim () to the mounting base (). 1. A scroll compressor comprising a hermetic enclosure , a compression unit configured to compress refrigerant , and an electric motor configured to drive the compression unit via a drive shaft , the hermetic enclosure comprising a midshell , an upper cap and a baseplate , the baseplate comprising a mounting base having a plate shape and including a central portion , wherein the baseplate further comprises a cylindrical rim surrounding the central portion and extending upwardly , the cylindrical rim being secured to the mounting base by a double-welded T-joint , the double-welded T-joint including an inner welding seam connecting an inner surface of the cylindrical rim to the mounting base , and an outer welding seam connecting an outer surface of the cylindrical rim to the mounting base.2. The scroll compressor according to claim 1 , wherein the cylindrical rim extends substantially perpendicularly to an upper surface of the mounting base.3. The scroll compressor according to claim 1 , wherein each of the inner welding seam and the outer welding seam is annular.4. The scroll compressor according to claim 1 , wherein the cylindrical rim is secured to the midshell by ...

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Номер записи: 95
04-03-2021 дата публикации

Enhanced-Thrust Lift and Propulsion Systems

Номер: US20210061248A1
Автор: Brauer Scott, Breedlove Jeffrey J., Holtzapple Mark T., Van Steenburg Michael
Принадлежит:

A propulsion system includes a duct and a fluid flow generator. The duct has an elongated cavity with an inlet portion and an outlet portion. The fluid flow generator is disposed in the duct. The fluid flow generator configured to receive a fluid to generate an inlet stream through the inlet portion and generate an outlet stream through the outlet portion. The outlet stream is configured to generate thrust for a vehicle on which the fluid flow generator and the duct are mounted, and at least one of the inlet portion or the outlet portion is bent in a circular shape to alter a direction of a corresponding either one of the input stream or the output stream. 1. A propulsion system comprising:a duct comprising an elongated cavity with an inlet portion and an outlet portion; anda fluid flow generator disposed in the duct, the fluid flow generator configured to receive a fluid to generate an inlet stream through the inlet portion and generate an outlet stream through the outlet portion,wherein the outlet stream is configured to generate thrust for a vehicle on which the fluid flow generator and the duct are mounted; andwherein at least one of the inlet portion or the outlet portion is bent in a circular shape to alter a direction of a corresponding either one of the input stream or the output stream.2. The propulsion system of claim 1 , wherein the vehicle comprises at least one of a flying car or a motorcycle claim 1 , and wherein the fluid flow generator comprises a propeller claim 1 , the thrust generated by the outlet stream being configured to lift the at least one of the flying car or the motorcycle from the ground.3. The propulsion system of claim 1 , wherein at least a portion of the duct is selectively movable from a deployed position in which the outlet stream is to provide lift for the vehicle to a retracted position where the duct is stored.4. The propulsion system of claim 1 , wherein the duct comprises multiple nested vanes that direct the outlet stream ...

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Номер записи: 96
05-03-2015 дата публикации

GAS COMPRESSOR

Номер: US20150064044A1
Автор: ISHIBASHI Yasufumi, SATOU Keita, TAJIRI Masayoshi
Принадлежит:

A gas compressor which can be efficiently reduced an oscillation (damping) generated in a housing even if the oscillation generated in a cylinder is directly propagated to the housing during operating, is provided. Each of ribs (and ) extending from each of fitting units to the vicinity of a position where an outer surface of a rear side block () of a compressing mechanism unit () received in the housing () are fitted (pressingly fitted) to an inner surface of the housing, are integral formed on the outer surface of the housing (). 1. A gas compressor , comprising:a substantially cylindrical housing which has an opening at a first end thereof and is closed at a second end;a front head which covers an end face of the opening of the housing;a compressing mechanism unit which is fixed in the front head at a first end, is received in the housing excluding a portion of the first end, and exhausts a compressed high pressure medium to an exterior by rotating a rotating axis due to a driving force from a driving source;a fitting unit which is formed on an outer surface at the end face of the opening of the housing and is fixed to an external structure member; andat least one rib,wherein an outer surface of a second end of the compressing mechanism unit is fixed to be pressingly fitted to an inner surface of the housing, and the at least one rib which extends from the fitting unit to a position where the second end of the compressing mechanism unit on the outer surface of the housing is pressingly fitted to the inner surface of the housing, is integral formed with the outer surface of the housing.2. The gas compressor according to claim 1 , wherein one of the ribs which have even number of the ribs is arranged to face the other of them.3. The gas compressor according to claim 1 , wherein the rotating axis is retained so as to be rotatable along a longitudinal direction of the housing in the center portion of the compressing mechanism unit claim 1 ,the fitting unit is formed ...

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Номер записи: 97
04-03-2021 дата публикации

ELECTRIC COMPRESSOR

Номер: US20210062808A1
Автор: HATTORI Yuya, MAEDA Takumi, YAMASHITA Takuro
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

An electric compressor includes a housing, a drive shaft, a motor, a fixed scroll, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor. The balance weight extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction of the drive shaft. The balance weight is located away from the rotor by a predetermined distance in the axial direction of the drive shaft. 1. An electric compressor comprising:a housing;a drive shaft that is disposed in the housing and rotatable around an axis of the drive shaft;a motor disposed in the housing and configured to rotate the drive shaft;a fixed scroll fixed to and disposed in the housing;a movable scroll disposed in the housing and connected to the drive shaft, the movable scroll being revolved by rotation of the drive shaft, wherein a compression chamber that compresses refrigerant is formed between the movable scroll and the fixed scroll; anda fixed block fixed to the housing and disposed between the motor and the movable scroll, the fixed block supporting the drive shaft such that the drive shaft is rotatable, the fixed block defining a motor chamber in the housing to accommodate the motor, whereinthe housing has an inlet through which refrigerant is drawn into the motor chamber,the motor includes a stator fixed in the motor chamber and a rotor fixed to the drive shaft, disposed in the stator, and rotatable together with the drive shaft,the rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft, wherein refrigerant flows through the introduction ...

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Номер записи: 98
17-03-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220082098A1
Автор: KIM Cheolhwan, KIM Taekyoung, Lee Byeongchul, Lee Kangwook
Принадлежит: LG ELECTRONICS INC.

A scroll compressor having a casing, a drive motor which is held in place within the casing and has an internal flow passage and an external flow passage to pass through, a rotation shaft which is combined with the drive motor for rotation, a frame that is provided under the drive motor and through which the rotation shaft passes for support, a first scroll which is provided under the frame and on which one flank surface a first wrap is formed, a second scroll which is provided between the frame and the first scroll, on which a second wrap that is engaged with the first wrap is formed, with which the rotation shaft is eccentrically combined and which forms a compression chamber, and a flow passage separation unit which separates a space between the drive motor and the frame into an internal space and an external space is provided. 1. A scroll compressor comprising:a casing;a drive motor located within the casing, the drive motor having a first flow passage and a second flow passage extending in an axial direction of the drive motor;a rotation shaft connected to the drive motor, the rotation shaft having an eccentric portion;a frame located below the drive motor, the frame configured to receive the rotation shaft to support the rotation shaft, the shaft extending through the frame;a first scroll located below the frame, the first scroll having a first wrap;a second scroll located between the frame and the first scroll, the second scroll having a second wrap configured to engage the first wrap, the second scroll being connected to the eccentric portion of the rotation shaft; anda ring shaped flow passage separation unit dividing a space between the drive motor and the frame into an internal space that communicates with the first flow passage of the drive motor and an external space that communicates with the second flow passage of the drive motor,wherein the flow passage separation unit includes one or more flow passage guides separating the internal space and the ...

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Номер записи: 99
28-02-2019 дата публикации

Scroll compressor

Номер: US20190063436A1
Автор: Hideaki Nagata, Masayuki Kakuda, Tomokazu Matsui, Yuji Takamura
Принадлежит: Mitsubishi Electric Corp

A scroll compressor includes a slider including a cylindrical portion supported by a rocking bearing provided on an orbiting scroll so that it rotates freely, and a balance weight portion connected to the cylindrical portion. When a direction opposite to an eccentric direction of the orbiting scroll is a counter eccentric direction and a direction of a central axis of the rocking bearing is a Z-axis direction, the balance weight portion includes a main weight portion provided at a position distant from a center of rotation of the slider in the counter eccentric direction, and a counter-weight portion provided at a position spaced away from the orbiting scroll than a position of a center of the rocking bearing in the Z-axis direction and at a position distant from the center of rotation of the slider in the eccentric direction.

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Номер записи: 100