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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 4999. Отображено 100.
01-03-2012 дата публикации

Compressor with liquid injection cooling

Номер: US20120051958A1
Автор: Andrew Nelson, Harrison O'hanley, Jeremy Pitts, Johannes Santen, John Walton, Mitchell Westwood, Pedro Santos
Принадлежит: Individual

A positive displacement compressor designed for near isothermal compression. A rotor includes a curved sealing portion that coincides with a in an interior rotor casing wall. Liquid injectors provide cooling liquid. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. Gate positioning systems position the gate in this manner, taking into account the shape of the rotor. Outlet valves allow for expulsion of liquids and compressed gas. The unique geometry and relationship between the parts provides for efficiencies and higher pressures not previously found in existing compressor designs.

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Номер записи: 1
05-07-2012 дата публикации

Displacement Pump with Internal Compression

Номер: US20120171068A1
Автор: Ralf Steffens
Принадлежит: Individual

The invention relates to a dry-compressing dual-shaft rotary displacement screw spindle pump machine for delivering and compressing gases. The spindle rotor pair therein includes multiple stages, having a primary delivery thread, a secondary delivery thread and a gas outlet collector chamber therebetween. The primary delivery thread head circle diameter decreases in the gas outlet direction, while the foot circle diameter thereof increases correspondingly for an application-specific matching inner “integral” compression ratio. The secondary delivery thread nominal delivery direction is opposite to the primary delivery thread nominal delivery direction. The secondary delivery thread is implemented such that the actual gas flow direction is opposite to the nominal delivery direction thereof, and is always directed away from the gas outlet plenum, having a gas permeation under ambient pressure just as the space in the gearbox. A control gas delivery stage is additionally provided for very high operating pressures.

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Номер записи: 2
01-11-2012 дата публикации

Scroll compressor

Номер: US20120275946A1
Автор: Cheolhwan Kim, Sanghun Seong, Sungyong Ahn
Принадлежит: LG ELECTRONICS INC

A scroll compressor is provided that may include a fixed scroll having a fixed wrap, an orbiting scroll engaged with the fixed wrap to define a compression chamber, a rotation shaft having a shaft portion eccentrically located with respect to the orbiting scroll, a pin portion located at an end of the shaft portion and having a diameter smaller than a diameter of the shaft portion, and a bearing located at an end of the pin portion, and a drive that drives the rotation shaft. The pin portion may be inserted through one of the fixed scroll or the orbiting scroll, and the orbiting scroll may be rotatably coupled to the bearing.

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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
24-01-2013 дата публикации

Structure for fixing electric part for motor-driven compressor

Номер: US20130021753A1
Автор: Masanori Tsuzuki, Shingo Enami, Yusuke Kinoshita
Принадлежит: Toyota Industries Corp

An electric part fixing structure for a motor-driven compressor includes an electric part having a plurality of leads and a guide member for positioning the leads. The guide member is made of a plastic and has a guide hole through which the lead is passed.

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Номер записи: 5
13-06-2013 дата публикации

Scroll fluid machine

Номер: US20130149179A1
Автор: Junichi Asami, Toru Sato
Принадлежит: Anest Iwata Corp

A disc-like spacer arranged below a first roller bearing rotatably supporting a driven crankshaft that forms an anti-rotation system is formed with a plurality of notches in the circumferential direction. A spot face is provided to face the outer circumferential surface of the spacer, and communication holes and are drilled on the outer circumferential side of the spot face to extend in the axial direction of the scroll. Also formed is a communication hole communicating the communication hole with the first roller bearing via the notches. A grease nipple is mounted to the communication hole. To replenish grease, the fixed scroll is removed from the housing such that the orbiting scroll is exposed, and grease is injected from the grease nipple into the first roller bearing with a grease gun.

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Номер записи: 6
15-08-2013 дата публикации

COMPRESSOR WITH LIQUID INJECTION COOLING

Номер: US20130209299A1
Автор: "OHANLEY HARRISON", NELSON ANDREW, PITTS JEREMY, SANTEN JOHANNES, SANTOS PEDRO, WALTON JOHN, WESTWOOD MITCHELL
Принадлежит: OSCOMP SYSTEMS INC.

A positive displacement rotary compressor is designed for near isothermal compression, high pressure ratios, high revolutions per minute, high efficiency, mixed gas/liquid compression, a low temperature increase, a low outlet temperature, and/or a high outlet pressure. Liquid injectors provide cooling liquid that cools the working fluid and improves the efficiency of the compressor. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. 1. A method of operating a compressor having a casing defining a compression chamber and a rotatable drive shaft configured to drive the compressor , the method comprising: (1) a speed of the drive shaft relative to the casing is at least 450 rpm, and', '(2) a pressure ratio of the compressor is at least 15:1; and, 'compressing a working fluid using the compressor such that'}injecting liquid coolant into the compression chamber during said compressing.2. The method of claim 1 , wherein the compressor comprises a positive displacement rotary compressor that includes a rotor connected to the drive shaft for rotation with the drive shaft relative to the casing.3. The method of claim 2 , wherein: moving the working fluid into the compression chamber through an inlet port in the compression chamber, and', 'expelling compressed working fluid out of the compression chamber through an outlet port in the compression chamber; and, 'the compressing comprises'}the pressure ratio comprises a ratio of (a) an absolute inlet pressure of the working fluid at the inlet port, to (b) an absolute outlet pressure of the working fluid expelled from the compression chamber through the outlet port.4. The method of claim 2 , wherein the speed is between 450 and 1800 rpm.5. The method of claim 4 , wherein the speed is greater than 600 rpm.6. The method of claim 2 , wherein said pressure ratio is between 15:1 and 100:1.7. The method of claim 6 , wherein said pressure ratio is at least 20:1.8. The method ...

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Номер записи: 7
12-09-2013 дата публикации

Double-screw liquid pump

Номер: US20130236334A1
Автор: Yan Tang
Принадлежит: Shanghai Power Technology Screw Machinery Co Ltd

A double-screw liquid pump is provided, which is applicable to an Organic Rankin Cycle (ORC). The double-screw liquid pump includes a semi-sealed or fully sealed shell, and the shell includes a first cavity and a second cavity isolated from each other. A motor is disposed in the first cavity, and a main body part of a double-screw is disposed in the second cavity. At least one rotor of the double-screw is fixedly connected to a rotor of the motor, and the double-screw rotates through driving of the motor. A liquid refrigerant injection inlet and a refrigerant outlet are disposed on the first cavity, and the motor is cooled through evaporation of a liquid refrigerant; a liquid inlet and a liquid outlet are disposed on the second cavity. In the double-screw liquid pump applied to the ORC provided in the present invention, since a resistance torque of the female rotor is very small, the liquid pump does not wear even when the liquid viscosity is very low, contributing to good reliability, and thereby improving power generation efficiency of the ORC. In addition, the semi-sealed or fully sealed shell can effectively prevent leakage of the refrigerant.

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Номер записи: 8
26-09-2013 дата публикации

Suction duct with stabilizing ribs

Номер: US20130251562A1
Автор: Johnathan P. Roof, Tracy E. Shay
Принадлежит: Bitzer Kuehlmaschinenbau GmbH and Co KG

A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.

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Номер записи: 9
07-11-2013 дата публикации

Pump

Номер: US20130294957A1
Автор: Downham Stephen Edward, Manson David Paul, Powell Huw David
Принадлежит: EDWARDS LIMITED

A pump comprises a rotor arrangement and a stator arrangement. The stator arrangement comprises a first part made from a corrosive resistant material which defines a volume which in use is swept by the rotor arrangement for pumping fluid from an inlet to an outlet of the stator arrangement. A second part of the stator arrangement is made from a thermally conductive material which envelopes the first part so that heat generated in the first part can be transferred to the second part at the interface surface between the two parts. The second part has formed therein at least one duct for conveying a liquid coolant through the second part so that heat can be transferred from the second part to the liquid coolant for cooling the stator arrangement. 1. A vacuum pump comprising a rotor arrangement and a stator arrangement , the stator arrangement comprising a first part made from a corrosive resistant material defining a volume which in use is swept by the rotor arrangement for pumping fluid from an inlet to an outlet of the stator arrangement , and a second part made from a thermally conductive material which envelopes the first part so that heat generated in the first part can be transferred to the second part at the interface surface between the two parts , the second part having formed therein at least one duct for conveying a liquid coolant through the second part so that heat can be transferred from the second part to the liquid coolant for cooling the stator arrangement.2. The pump as claimed in claim 1 , wherein the second part is a casting formed around the first part to provide intimate contact between the first and second parts to improve the transfer/conduction of heat from the first part to the second part.3. The pump as claimed in claim 1 , wherein said at least one duct is formed in the second part by one or more tubes made from a thermally conductive material which is resistant to corrosion by the liquid and the second part is a casting around the tube to ...

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Номер записи: 10
14-11-2013 дата публикации

SCROLL REFRIGERATION COMPRESSOR

Номер: US20130302197A1
Автор: Ancel Christophe, Ginies Pierre
Принадлежит: DANFOSS COMMERCIAL COMPRESSORS

The scroll refrigeration compressor includes a sealed casing, stationary and moving volutes including spiral wraps engaged in one another and defining the variable-volume compression chambers, a delivery chamber defined by the plate of the stationary volute and the sealed casing, a heat shield disposed in the delivery chamber and dividing the delivery chamber into a first volume defined by the plate of the stationary volute and the heat shield and a second volume defined by the heat shield and the sealed casing, and at least one flow passage arranged to communicate the first and second volumes. The compressor further includes at least one bypass passage arranged to communicate the first volume with an intermediate compression chamber, and at least one bypass valve disposed in the first volume and movable between closing and opening positions for closing and opening the corresponding bypass passage. 1. A scroll refrigeration compressor comprising:a sealed casing;a stationary volute sealably fixed on the sealed casing and a moving volute following an orbital movement, each volute including a plate from which a spiral wrap extends, the spiral wraps of the stationary and moving volutes being engaged in one another and defining the variable-volume compression chambers,a delivery chamber defined by the plate of the stationary volute and the sealed casing,a heat shield having a plate-shape, the heat shield being disposed in the delivery chamber and being mounted on the plate of the stationary volute, the heat shield dividing the delivery chamber into a first volume defined by the plate of the stationary volute and the heat shield and a second volume defined by the heat shield and the sealed casing,at least one flow passage arranged to communicate the first and second volumes,wherein the flow passage is at least partially defined by the inner wall of the sealed casing and the outer peripheral edge of the heat shield, and the compressor further comprises:at least one bypass ...

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Номер записи: 11
12-12-2013 дата публикации

Discharge silencer for a hermetically encapsulated refrigerant compressor

Номер: US20130330214A1
Автор: Alfred Freiberger, Guenther Zippl, Herwig Kulmer, Michaela Kohl
Принадлежит: ACC Austria GmbH

The invention relates to a discharge silencer ( 6 ) for a hermetically encapsulated refrigerant compressor ( 1 ), which comprises a piston/cylinder unit ( 4 ) that compresses a refrigerant and has a compression chamber ( 3 ) and which is enclosed by a hermetically sealed compressor housing ( 2 ), wherein the compression chamber ( 3 ) is supplied with refrigerant coming from an evaporator through a suction silencer ( 5 ) and discharges refrigerant compressed by the piston/cylinder unit ( 4 ) into a pressure line ( 7 a, b ) through the discharge silencer ( 6 ). According to the invention, the discharge silencer ( 6 ) comprises a main body ( 8 ), on which an inlet flange ( 9 ) for the refrigerant coming from the piston/cylinder unit ( 4 ) is arranged, and an outlet channel ( 10 ), through which the refrigerant can be led into a pressure line ( 7 a, b ) that supplies a condenser with compressed refrigerant. The main body ( 8 ) has four side walls ( 11, 12, 13, 14 ), which each have a longitudinal extension and a width extension that is shorter than the longitudinal extension, wherein the two side walls ( 11, 12 ) having larger areas are opposite each other and are curved in the same direction when viewed in a direction parallel to the longitudinal extension.

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Номер записи: 12
13-03-2014 дата публикации

Compressor assembly with directed suction

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

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

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Номер записи: 13
06-01-2022 дата публикации

OIL-FREE WATER-INJECTED SCREW AIR COMPRESSOR

Номер: US20220003234A1
Автор: KIZAKKUMPAT Shinu, KUPPACHI Venu Madhav, PAUL Jerrin, RAMANATHAN Sundaranathan, VARADARAJ Jairam
Принадлежит:

An oil-free water-injected screw air compressor comprises a housing that encloses two rotors for generating compressed air, an air water separator for separating the water from the compressed air. Injecting water during compression can remove the heat of compression and thus enhance efficiency of compression. However, injecting water may complicate bearing lubrication. According to the present subject matter, these challenges are tackled using a sealing system for isolation of bearing lubricant from water used for cooling. 1. A screw compression device comprising:a housing defining a working space in which air is to be compressed;a male screw rotor disposed in the working space;a female screw rotor disposed in the working space, wherein an intermeshing of the male screw rotor and the female screw rotor causes compression of air;a separator tank to separate air and water in an air-water mixture and to supply water to the working space for cooling the working space; a first bearing to support at least one of: the male screw rotor and the female screw rotor;', 'a lubricant sump to store lubricant for lubrication of the first bearing;', 'a first gear coupled to one of: the female screw rotor and the male screw rotor; and', 'a lubricant splasher coupled to the first gear, wherein the lubricant splasher comprises a groove to collect lubricant from the lubricant sump and splash the collected lubricant on the first bearing during rotation of the first gear;, 'a first bearing chamber displaced from the working space in an axial direction of the screw compression device and comprising a ring seal;', 'a first labyrinth seal;', 'a second labyrinth seal, and', the first annular space is connected to a low-pressure point on the working space that is to be maintained at a pressure lower than that of the first bearing chamber,', 'the second annular space is supplied with compressed air from a compressed-air source through a flow regulator, and', 'the third annular space is open to ...

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Номер записи: 14
07-01-2016 дата публикации

AIR COMPRESSION DEVICE

Номер: US20160001791A1
Автор: KUROMITSU Masaru, MIZUFUNE Toru, Takahashi Akira
Принадлежит:

The present application discloses an air compression device, including a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; and a filter through which air passes, the air being sucked into the housing. The filter may include a plate member having a first main plate portion provided with air holes through which the air passes. A surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air. 1. An air compression device , comprising:a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; anda filter through which air passes, the air being sucked into the housing,wherein the filter includes a plate member having a first main plate portion provided with air holes through which the air passes, andwherein a surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air.2. The air compression device according to claim 1 ,wherein the filter includes a second main plate portion aligned with the plate member in a third direction different from the first and second directions, andwherein the second direction has a first intersection angle with an imaginary plane which perpendicularly intersects with the first direction.3. The air compression device according to claim 2 ,wherein the air holes in the first main plate portion include a first air hole, and a second air hole aligned with the first air hole in a fourth direction along the surface of the plate member,wherein the second main plate portion includes a third air hole extending in a fifth direction having a second intersection angle with the fourth direction, and a fourth air hole ...

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Номер записи: 15
05-01-2017 дата публикации

COMPRESSOR WITH THERMALLY-RESPONSIVE INJECTOR

Номер: US20170002818A1
Автор: Stover Robert C.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor includes a housing, a partition, a first scroll, a second scroll, and a valve assembly disposed within the second scroll. The valve assembly includes a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing. When in the first position, the valve body inhibits fluid communication between a fluid source and one of a series of compression pockets formed by the first and second scroll. When in the second position, the valve body allows fluid communication between the conduit and one or more of the series of compression pockets. The valve body is displaceable between the first and second positions in response to a change in operating temperature of the compressor. 1. A compressor comprising:a housing;a partition disposed within the housing, the partition defining a suction chamber and a discharge chamber, and including a discharge passage in fluid communication with the discharge chamber;a first scroll supported within said housing and including a first endplate having a first spiral wrap extending therefrom;a second scroll supported within said housing and including a second endplate having a first side, a second side opposite the first side, and an injection passage, the first side having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a series of compression pockets, the injection passage being in fluid communication with at least one of said series of compression pockets; andan injection system including a conduit and a valve assembly, the conduit having a first end in fluid communication with a fluid source, and a second end in fluid communication with the injection passage, the valve assembly including a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing, said valve body ...

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Номер записи: 16
07-01-2016 дата публикации

NOISE CANCELLATION BY PHASE-MATCHING COMMUNICATING DUCTS OF ROOTS-TYPE BLOWER AND EXPANDER

Номер: US20160003254A1
Автор: EYBERGEN William Nicholas, Glover, III Rodney Champlin
Принадлежит:

A volumetric assembly includes: a roots-type supercharger device; a roots-type expander device; a first duct extending from the supercharger fluid inlet, the first duct supplying fluid to the roots-type supercharger device; and a second duct extending from the expander fluid outlet, the second duct directing fluid away from the roots-type expander device, wherein the first duct is positioned adjacent to the second duct, and wherein the first duct defines a first aperture and the second duct defines a second aperture, the first and second apertures being generally aligned; and a flexible membrane positioned between the first and second ducts in the first and second apertures, the flexible membrane sealing the first duct from the second duct, and the flexible membrane flexing as fluid flows within the first and second ducts to attenuate noise associated with the fluid flows. 1. A volumetric assembly , comprising:a roots-type supercharger device having at least two supercharger rotors, with each of the rotors having two or more lobes, the roots-type supercharger defining a supercharger fluid inlet and a supercharger fluid outlet;a roots-type expander device having at least two expander rotors, with each of the rotors having two or more lobes, the roots-type expander defining an expander fluid inlet and an expander fluid outlet;a first duct extending from the supercharger fluid inlet, the first duct supplying fluid to the roots-type supercharger device; anda second duct extending from the expander fluid outlet, the second duct directing fluid away from the roots-type expander device, wherein the first duct is positioned adjacent to the second duct, and wherein the first duct defines a first aperture and the second duct defines a second aperture, the first and second apertures being generally aligned; anda flexible membrane positioned between the first and second ducts in the first and second apertures, the flexible membrane sealing the first duct from the second duct, ...

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Номер записи: 17
27-01-2022 дата публикации

Scroll compressor

Номер: US20220025885A1
Автор: Jeong Ki Seo, Kyung Jae Lee
Принадлежит: Hanon Systems Corp

A scroll compressor includes a casing; an orbiting scroll; a fixed scroll; and a main frame which supports the orbiting scroll. The fixed scroll may include a fixed scroll end plate and a fixed scroll wrap which protrudes from the fixed scroll end plate. The main frame may include a main frame end plate which is provided on the opposite side of the fixed scroll end plate on the basis of the orbiting scroll, and a main frame side plate which protrudes from an outer circumferential portion of the main frame end plate toward the fixed scroll. The fixed scroll end plate, the main frame end plate, and the main frame side plate may form an orbiting space of the orbiting scroll.

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Номер записи: 18
15-01-2015 дата публикации

Liquid ring compressor

Номер: US20150017027A1
Автор: Gad Assaf
Принадлежит: Agam Energy Systems Ltd

A liquid-ring, rotating-casing compressor comprises a shaft carrying an impeller having a core and a plurality of radially extending vanes rotatably coupled to the shaft for rotation around a first axis, and a tubular casing mounted for rotation relative to the impeller around a second axis that is parallel to and offset from the first axis. The casing and impeller define a compression zone wherein edges of the vanes rotate in increasing proximity to an inner surface of the casing and an expansion zone wherein edges of the vanes rotate in increasing spaced-apart relationship along an inner surface of the casing. An inlet port communicates with the expansion zone, an outlet port communicates with the compression zone, and a drive imparts rotating motion to the casing. The eccentricity ecr of the casing relative to the impeller is between about (1−c)/4 and (1−c)/9, preferably less than half (1−c)/3.

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Номер записи: 19
15-01-2015 дата публикации

VACUUM PUMP OF VEHICLE FOR REDUCING OPERATION NOISE

Номер: US20150017045A1
Автор: OH Chunghan
Принадлежит: HYUNDAI MOTOR COMPANY

A vacuum pump of a vehicle for reducing operation noise may include a rotor rotating in a space defined by a housing formed in a pump body at an eccentric position relative to a center of the space, a vane installed to the rotor to rotate eccentrically in the space, and an oil outlet passing through the pump body and formed at a predetermined height above a lower limit of the space such that, when lubricant in the space is discharged in a pressurized state by the vane, the lubricant is not reintroduced back into the space by gravity. 1. A vacuum pump of a vehicle for reducing operation noise , comprises:a rotor rotating in a space defined by a housing formed in a pump body at an eccentric position relative to a center of the space;a vane installed to the rotor to rotate eccentrically in the space; andan oil outlet passing through the pump body and formed at a predetermined height above a lower limit of the space such that, when lubricant having been introduced into the space is discharged in a pressurized state by the vane, the lubricant is not reintroduced back into the space by gravity.2. The vacuum pump of claim 1 , wherein the oil outlet is formed above the center of the space and below an upper limit of the space.3. The vacuum pump of claim 2 , wherein:the housing is formed on an inside surface of the pump body and has a side groove formed adjacent to the oil outlet along a rotation direction of the vane; andthe vane passes through a front end of the side groove and then passes through a front end of the oil outlet, during rotation of the vane.4. The vacuum pump of claim 3 , wherein an installation angular section of the side groove is greater than that of the oil outlet on the basis of the center of the space.5. The vacuum pump of claim 3 , wherein an angle formed by a center of rotation of the rotor and both ends of the side groove is 77 degrees to 81 degrees.6. The vacuum pump of claim 1 , wherein a back surface of the oil outlet opposite to an installation ...

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Номер записи: 20
03-02-2022 дата публикации

COMPRESSOR HAVING SHELL FITTING

Номер: US20220034316A1
Автор: Bingham Larry L., REINHART KEITH J.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor includes a shell, a compression mechanism and a fitting. The shell includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the shell. The fitting is attached to the shell at the opening. Working fluid flowing through the fitting flows to the compression mechanism. The opening is partially defined by a first edge and a second edge. The first edge includes a first planar surface and the second edge includes a second planar surface that faces the first planar surface. A first portion of the fitting extends at least partially into the opening and a second portion of the fitting abuts against the first and second edges. 1. A compressor comprising:a shell including an opening and defining a chamber;a compression assembly disposed within the chamber of the shell; anda fitting attached to the shell at the opening, working fluid flowing through the fitting flows to the compression assembly,wherein the opening is partially defined by a first edge and a second edge, the first edge includes a first planar surface and the second edge includes a second planar surface that faces the first planar surface, a first portion of the fitting extends at least partially into the opening and a second portion of the fitting abuts against the first and second edges.2. The compressor of claim 1 , wherein the opening is a non-circular shape.3. The compressor of claim 1 , wherein the opening has opposing arcuate surfaces claim 1 , and wherein an outer diametrical surface of the fitting abuts against at least one of the opposing arcuate surfaces.4. The compressor of claim 3 , wherein the opposing arcuate surfaces and the first and second edges cooperate to define a circular shape.5. The compressor of claim 1 , wherein the fitting is a suction fitting claim 1 , and wherein working fluid flowing through the suction fitting flows to the compression assembly.6. The compressor of claim 1 , wherein the first portion of the fitting is a first ...

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Номер записи: 21
03-02-2022 дата публикации

Dry Dual-Scroll Vacuum Pump

Номер: US20220034321A1
Автор: Chen Guodong, Jiang Renpu, Xiong Shusheng
Принадлежит:

A dry dual-scroll vacuum pump includes a driving assembly and an upper cover located above the driving assembly, wherein the driving assembly includes an output shaft, and a movable disk is eccentrically arranged on the output shaft; two groups of first scroll teeth that are centrally symmetrical are arranged on a side of the movable disk that faces the upper cover; a fixed disk is arranged at a lower end of the upper cover, second scroll teeth that are in one-to-one correspondence with the first scroll teeth are arranged on the fixed disk, and the first scroll teeth are meshed with the second scroll teeth to form a compression cavity; and the upper cover is further provided with an air inlet and an air outlet, which correspond to the compression cavity. 11666246. A dry dual-scroll vacuum pump , characterized by comprising a driving assembly and an upper cover located above the driving assembly , wherein the driving assembly comprises an output shaft () , and a movable disk () eccentrically arranged on the output shaft (); two groups of first scroll teeth () that are centrally symmetrical are arranged on a side of the movable disk () that faces the upper cover;{'b': 4', '23', '24', '4', '24', '23', '5', '1, 'a fixed disk () is arranged at a lower end of the upper cover, second scroll teeth () that are in one-to-one correspondence with the first scroll teeth () are arranged on the fixed disk (), and the first scroll teeth () are meshed with the second scroll teeth () to form a compression cavity; and the upper cover is further provided with an air inlet () and an air outlet (), which correspond to the compression cavity.'}224232121244236. The dry dual-scroll vacuum pump according to claim 1 , characterized in that a tooth tip of each of the first scroll teeth () and the second scroll teeth () is provided with a sealing groove () claim 1 , the sealing groove () is internally provided with an elastic sealing material claim 1 , the first scroll teeth () and the fixed ...

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Номер записи: 22
03-02-2022 дата публикации

PUMPING ASSEMBLY, COMPRESSOR AND AIR CONDITIONING EQUIPMENT

Номер: US20220034323A1
Автор: DENG Liying, HU Yusheng, LIANG Shebing, WAN Pengkai, WEI Huijun, XU Jia, YANG Guomang
Принадлежит: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

The present disclosure provides a pumping assembly, a compressor and air conditioning equipment. The pumping assembly includes a first structural body, a rolling bearing assembly, a second structural body, a third structural body and a main shaft passing through the first structural body, the rolling bearing assembly, the second structural body and the third structural body. The pumping assembly includes: a first lubricating oil path passing through a second structural part, the sliding sheet backpressure cavity, a third structural part, a second structural part and a rolling body of the rolling bearing assembly; a second lubricating oil path passing through the sliding sheet backpressure cavity and a first pressure relieving groove of the first structural body; and a third lubricating oil path passing through the sliding sheet backpressure cavity, the first structural part and the rolling body of the rolling bearing assembly. 1. A pumping assembly , comprising a first structural body , a rolling bearing assembly , a second structural body , a third structural body and a main shaft , wherein the main shaft sequentially passes through the first structural body , the rolling bearing assembly , the second structural body and the third structural body , and the pumping assembly comprising a plurality of lubricating oil paths , wherein the plurality of lubricating oil paths at least comprises:a first lubricating oil path passing through the second structural body, a sliding sheet backpressure cavity of a rotor structure of the main shaft, the third structural body, the second structural body and a rolling body of the rolling bearing assembly;a second lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft and a first structural body pressure relieving groove of the first structural body; anda third lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft ...

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Номер записи: 23
03-02-2022 дата публикации

COMPRESSOR

Номер: US20220034324A1
Автор: HA Jonghun, KIM Cheolhwan, Lee Kangwook, LEE Seungmock
Принадлежит:

The present invention relates to a compressor comprising: a muffler that provides a sealed space for guiding a refrigerant; and a resonator provided in the muffler and forming cavities separate from the sealed space to decrease vibration and noise caused by the refrigerant. 1. A compressor comprising:a case including a discharge outlet defined at one side of the case, the discharge outlet being configured to discharge a refrigerant to an outside of the case;a rotary shaft disposed in the case;a driving unit coupled to the case and configured to rotate the rotary shaft;a compression unit coupled to the rotary shaft and configured to compress the refrigerant;a muffler that is coupled to the compression unit and defines a sealed space configured to supply the refrigerant toward the discharge outlet; anda resonator disposed in the muffler, the resonator defining a cavity that is separate from the sealed space and configured to reduce vibration or noise of the compressor.2. The compressor of claim 1 , wherein the resonator includes:a resonant cover coupled to the muffler, the resonant cover defining the cavity; anda resonant hole defined through the resonant cover and configured to counterbalance or absorb the vibration or the noise.3. The compressor of claim 2 , wherein the resonator further includes a partition that divides the cavity into a plurality of cavities claim 2 , each cavity relating to a frequency of the vibration or the noise that is counterbalanced or absorbed by the resonant hole.4. The compressor of claim 3 , wherein the muffler includes:a coupling body coupled to the compression unit, andan accommodating body that extends from the coupling body and defines the sealed space, andwherein the partition includes a partition rib that extends from an outer circumferential surface of the rotary shaft toward an inner circumferential surface of the accommodating body, the partition rib dividing the cavity into the plurality of cavities.5. The compressor of claim ...

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Номер записи: 24
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: 25
18-01-2018 дата публикации

COMPRESSOR SYSTEM AND METHOD FOR CONDITIONING INLET AIR

Номер: US20180017061A1
Автор: Able Nicholas, Collins James Christopher, Peters Michael, SCHULTZ KENNETH J., Yenneti Srinivasa Rao
Принадлежит:

The present disclosure provides a compressor system operable for compressing a working fluid such as air. A conditioner is positioned upstream of the compressor to reduce the humidity and may in certain forms control a temperature of the working fluid entering the compressor. An aftercooler and an oil cooler is positioned downstream of the compressor. A first heat exchange system may direct water from a source through the conditioner to the aftercooler and oil cooler. An oil heat exchange circuit directs oil from the compressor to the oil cooler and then to a regenerator prior to reentry into the compressor. A control system is operable for controlling portions of compressor system to provide inlet air to the compressor at a desired temperature and humidity. 1. A compressor system comprising:a fluid compressor operable for compressing a compressible fluid including a mixture of air;a lubrication supply system operable for supplying oil to the compressor;a dehumidifier operable for removing moisture from a compressible working fluid upstream of the fluid compressor, the dehumidifier including a conditioner and a regenerator;an oil cooler configured to cool oil downstream of the fluid compressor;an aftercooler configured to cool compressed air downstream of the fluid compressor; anda cooling circuit having a cooling fluid passing through the conditioner, the oil cooler and the aftercooler.2. The compressor system of claim 1 , wherein the cooling circuit includes water.3. The compressor system of claim 1 , wherein the cooling fluid in the cooling circuit exits the conditioner and enters the oil cooler and aftercooler in parallel.4. The compressor system of claim 1 , wherein the cooling fluid in the cooling circuit enters the conditioner claim 1 , the oil cooler and the aftercooler in parallel from a water inlet conduit.5. The compressor system of further comprising a dehumidifier heat exchange fluid circuit defined through the conditioner claim 1 , an economizer and ...

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Номер записи: 26
18-01-2018 дата публикации

COMPRESSOR SYSTEM AND LUBRICANT CONTROL VALVE

Номер: US20180017062A1
Автор: Able Nicholas, Collins James Christopher, Peters Michael, SCHULTZ KENNETH J., Stinson Matthew, Yenneti Srinivasa Rao
Принадлежит:

The present disclosure provides a compressor system operable for compressing a working fluid such as air. A conditioner is positioned upstream of the compressor to reduce the humidity and in some embodiments may control a temperature of the working fluid entering the compressor. A working fluid aftercooler and a lubricant cooler is positioned downstream of the compressor. A first heat exchange system directs water from a source through the conditioner and then to the aftercooler and oil cooler in parallel. A second heat exchange system directs oil from the compressor to the oil cooler and then to a regenerator prior to reentry into the compressor. A control system with one or more control valves is configured to provide oil to the compressor at a target temperature defined to ensure that the temperature of the discharged compressor is above a pressure dew point temperature. 1. A compressor system comprising:a fluid compressor operable to compress a compressible working fluid;a dehumidifier operable for removing moisture from the compressible working fluid upstream of the fluid compressor, the dehumidifier including a conditioner and a regenerator;a lubrication supply system operable for supplying oil to the compressor;an oil cooler configured to cool oil downstream of the fluid compressor;an aftercooler configured to cool compressed air downstream of the fluid compressor;a controller operable for determining a target temperature of a compressed working fluid discharged from the compressor;a control valve operably coupled to the controller and in fluid communication with the oil cooler; andwherein the control valve controls an oil flow rate through the oil cooler such that oil is supplied to the compressor at a predetermined temperature effective to produce compressed working fluid at the target temperature.2. The compressor system of claim 1 , wherein the target temperature is the pressure dew point temperature of the working fluid plus a predetermined margin of ...

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Номер записи: 27
21-01-2021 дата публикации

OIL-INJECTED SCREW COMPRESSOR INSTALLATION

Номер: US20210017995A1
Автор: ADRIAENSSENS Walter Josée Louis, DOLLEZ Yanni Francine, LAURENT Steven Ray Maurits, MARTENS Kristof Adrien, VAN HAM Brecht
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

Oil-injected screw compressor installation including a frame or underframe (), a screw compressor element (), electrical cabinet (), oil separator vessel () and an air-cooled cooling module (), with as characteristic that on one side () of the frame (), the screw compressor element () is placed horizontally and with the electrical cabinet (), the oil separator vessel () and the air-cooled cooling module () being placed on the other side () of the frame (), with the cooling module () being placed such that this is perpendicular to the compressor element () and the air () sucked in by the cooling module () will flow between the electrical cabinet () and the cooling module (). 16-. (canceled)72365822365822839868778ab. An oil-injected screw compressor installation including a frame or underframe () , a screw compressor element () , electrical cabinet () , oil separator vessel () and an air-cooled cooling module () , wherein on one side () of the frame () , the screw compressor element () is placed horizontally and with the electrical cabinet () , the oil separator vessel () and the air-cooled cooling module () being placed on the other side () of the frame () , with the cooling module () being placed such that this is laterally over and perpendicular to the compressor element () and the air () sucked in by the cooling module () will flow between the electrical cabinet () and the cooling module (); and that the oil-injected screw compressor installation is further provided with a minimum pressure valve () with this minimum pressure valve () being mounted on the air-cooled cooling module ().811. The oil-injected screw compressor installation according to claim 7 , further comprising a valve manifold () in which all oil filters and thermostats are contained.911223a. The oil-injected screw compressor installation according to claim 8 , wherein the valve manifold () is on the same side () of the underframe () as the screw compressor element () is.10132. Oil-injected screw ...

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Номер записи: 28
16-01-2020 дата публикации

Pump apparatus

Номер: US20200018309A1
Автор: Kazuhiro Homma, Koji Higuchi, Yoshiyuki Kobayashi, Yosuke Ito
Принадлежит: Nidec Tosok Corp

A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

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Номер записи: 29
16-01-2020 дата публикации

SCROLL FLUID MACHINE

Номер: US20200018313A1
Автор: ASAMI Junichi, HOSHI Kazuhide, KATO Keiya, Sato Toru
Принадлежит:

A scroll fluid machine includes a compressor body having a first scroll and a second scroll which form a compression chamber, a cover forming an air guiding space by covers at least a portion of the compressor body, and a blower fan supplying cooling air to at least one of the first scroll and the second scroll. A portion of the cooling air is supercharged into the intake port via the air guiding space whereby satisfactory compression efficiency is achieved with a simple configuration. 1. A scroll fluid machine comprising:a housing;a fixed scroll which is fixed to the housing and in which a spiral groove formed by a fixed wrap formed on a fixed end plate is blocked by a partition wall that partitions a low-pressure-side compression chamber and a high-pressure-side compression chamber;a revolving scroll which is accommodated in the housing so as to face the fixed scroll to form the low-pressure-side compression chamber and the high-pressure-side compression chamber together with the fixed scroll and is resolvable supported by a driving shaft;a cover that forms an air guiding space between the fixed scroll and the cover so that a portion of cooling air supplied to at least one of the fixed scroll and the revolving scroll can be introduced into the air guiding space;and an intermediate cooler configured to cool pressurized gas discharged from the low-pressure-side compression chamber by heat exchange with the cooling air in the air guiding space so that the cooled pressurized gas is returned to the high-pressure-side compression chamber.2. The scroll fluid machine according to claim 1 , whereinthe intermediate cooler includes a radiating pipe arranged in the air guiding space so as to connect a low-pressure-side discharge port of the low-pressure-side compression chamber and a high-pressure-side inlet port of the high-pressure-side compression chamber.3. The scroll fluid machine according to claim 2 , whereinthe radiating pipe is arranged to be folded back on an inner ...

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Номер записи: 30
22-01-2015 дата публикации

COMPRESSOR

Номер: US20150023811A1
Автор: SHIROMARU Katsutoshi, SOWA Masato, SUZUKI Fumihiro, YAMADA Kazuho, YOKOI Hironao
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A compressor includes a compression mechanism drawing in, compressing and discharging fluid and a housing accommodating therein the compression mechanism. The housing has therein a discharge chamber into which the fluid compressed by the compression mechanism is discharged. A silencing and cooling device is provided in the discharge chamber to cool the fluid discharged in the discharge chamber and reduce pressure fluctuation. A dispersion wall is provided in the discharge chamber on downstream side of the discharge chamber that is opposite from an inflow port with respect to flowing direction of the discharged fluid. The dispersion wall is disposed to cover a part of the silencing and cooling device and cover at least a part of the inflow port. 1. A compressor comprising:a compression mechanism drawing in, compressing and discharging fluid; anda housing accommodating therein the compression mechanism and having therein a discharge chamber into which the fluid compressed by the compression mechanism is discharged, wherein a silencing and cooling device is provided in the discharge chamber to cool the fluid discharged in the discharge chamber and reduce pressure fluctuation, wherein a dispersion wall is provided in the discharge chamber on downstream side of the discharge chamber that is opposite from an inflow port for the fluid from the compression mechanism to the discharge chamber with respect to the silencing and cooling device, wherein the dispersion wall is disposed to cover a part of the silencing and cooling device and cover at least a part of the inflow port.2. The compressor according to claim 1 , wherein the dispersion wall is disposed with a gap between the dispersion wall and the silencing and cooling device set at such a dimension that the air pressure in a part of the silencing and cooling device facing the dispersion wall is greater than that in the other part of the silencing and cooling device.3. The compressor according to claim 1 , wherein the ...

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Номер записи: 31
22-01-2015 дата публикации

Screw compressor

Номер: US20150023826A1
Автор: Andries Jan F. Desiron
Принадлежит: Atlas Copco Airpower NV

Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted, and this motor shaft drives at least one of the aforementioned two compressor rotors, whereby the compression housing and the motor housing are connected directly together to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane.

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Номер записи: 32
25-01-2018 дата публикации

Pump assembly having integrated controller and motor with internal active cooling

Номер: US20180023565A1
Автор: Liping Wang, Richard Muizelaar
Принадлежит: Stackpole International Engineered Products Ltd

A pump assembly and a method for cooling the same are disclosed. The pump assembly includes a pump, a controller, and a driven electric motor. The pump and the electric motor are on opposing axial sides of the controller. The assembly also has a heat conductive plate positioned between the pump and the controller that conducts heat from the controller. A transfer passage is provided for receiving pressurized fluid output from the pump and to direct the fluid along and in contact with the heat conductive plate to conduct heat therefrom into the pressurized fluid. An outlet passage communicates with the assembly outlet to discharge the pressurized fluid.

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Номер записи: 33
29-01-2015 дата публикации

COMPRESSOR DEVICE AND METHOD FOR CONTROLLING SUCH A COMPRESSOR DEVICE

Номер: US20150030468A1
Автор: MARTENS Kristof Adrien Laura
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

Compressor device that comprises a compressor element that is equipped with a compression chamber with at least one coolant inlet, and which furthermore comprises a gas outlet, a gas/coolant separation tank connected to it, and, a cooling circuit with a cooler that extends between the separation tank and the coolant inlet, and which is equipped with control means to adjust the temperature of the coolant flow supplied to the compressor element, whereby the aforementioned control means comprise a first and a second sub-controller, each with a different target parameter, whereby the control means also comprise switching means to place one of the two sub-controllers in an activated state and the other sub-controller in a deactivated state. 127-. (canceled)28. A compressor device that comprises a liquid-injected compressor element that is equipped with a compression chamber with at least one coolant inlet , and which furthermore comprises a gas outlet , a gas/coolant separation tank connected to the gas outlet , and a cooling circuit equipped with a cooler that extends between the separation tank and the coolant inlet , and which is equipped with control means to adjust the temperature of the coolant flow supplied to the compressor element , wherein the aforementioned control means comprise a first and a second sub-controller , each with a different target parameter , whereby the aforementioned control means also comprise switching means to place one of the two sub-controllers in an activated state and the other of the two sub-controllers in a deactivated state.29. The compressor device according to claim 28 , wherein the aforementioned first sub-controller is constructed in the form of a controller of the temperature of the coolant at the inlet of the cooler or a temperature practically equal to it.30. The compressor device according to claim 28 , wherein the aforementioned second sub-controller is constructed in the form of a controller of the temperature of the ...

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Номер записи: 34
01-02-2018 дата публикации

VACUUM PUMP WITH COOLING APPARATUS

Номер: US20180030983A1
Автор: Lee In Cheol
Принадлежит:

The present invention relates to a technology of efficiently cooling a vacuum pump that produces a vacuum in a process chamber of a semiconductor manufacturing facility. The present invention provides a new type of vaccum pump cooling method that keeps the internal temperature of a vacuum pump at a predetermined level by circulating oil through rotors of the vacuum pump, such that it is possible to prevent a rapid increase in the temperature of the vacuum pump and smoothly lubricate bearings at the early stage of operation, whereby it is possible to ensure stability when performing processes and operating the pump and economically maintain the facility. 1. A vacuum pump with a cooling apparatus , comprising:{'b': 12', '10', '11, 'a pump housing () having an inlet () for receiving gas and an outlet () for discharging gas;'}{'b': 13', '13', '12, 'i': a', 'b, 'a pair of rotors (, ) supported at both ends in the pump housing () and generating vacuum pressure by rotating in mesh with each other;'}{'b': 14', '13', '13', '13, 'i': a', 'a', 'b, 'a motor () connected to a shaft of the rotor () to drive the rotors (, ); and'}{'b': 15', '13', '13, 'i': a', 'b, 'gears () for cooperation between the rotors (, );'}{'b': 31', '12, 'a first temperature sensor () disposed at a gas inlet side of the pump housing () to detect temperature of gas;'}{'b': 32', '18, 'a second temperature sensor () disposed in a main oil line of the oil supply unit () to detect temperature of oil; and'}{'b': 33', '31', '32, 'a micro processor () variably controlling temperature of oil on the basis of temperature values input from the first temperature sensor () and the second temperature sensor (),'}{'b': 16', '13', '13', '17', '16', '17', '18', '13', '13', '16, 'i': a', 'b', 'a', 'b, 'wherein holes () are formed in parallel along axial lines of the rotors (, ), oil supply pipes () are disposed in the holes (), oil is supplied into the oil supply pipes () from an oil supply unit (), and the oil cools the ...

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Номер записи: 35
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: 36
31-01-2019 дата публикации

ELECTRIC COMPRESSOR

Номер: US20190032974A1
Автор: OH Hae Jin
Принадлежит:

An electric compressor may include: a housing part having a refrigerant inlet through which refrigerant is introduced; a boss part formed in the housing part, having a bearing installed therein to support a rotating shaft, and guiding the refrigerant to the bearing; a guide part formed in the housing part, and inducing the refrigerant introduced into the refrigerant inlet toward the boss part, while delaying the movement of the refrigerant; and a heating part mounted in the housing part, and configured to provide heat to the guide part in order to heat the refrigerant moved to the boss part. 1. An electric compressor comprising:a housing part having a refrigerant inlet through which refrigerant is introduced;a boss part formed in the housing part, having a bearing installed therein to support a rotating shaft, and guiding the refrigerant to the bearing;a guide part formed in the housing part, and inducing the refrigerant introduced into the refrigerant inlet toward the boss part, while delaying the movement of the refrigerant; anda heating part mounted in the housing part, and configured to provide heat to the guide part in order to heat the refrigerant moved to the boss part.2. The electric compressor of claim 1 , wherein the housing part comprises:a finished part having one side brought in contact with the heating part, and having the boss part formed at the other side thereof; anda circumference part protruding from the edge of the finished part, and having the refrigerant inlet formed therein.3. The electric compressor of claim 2 , wherein the finished part is formed of a thermal conductive material.4. The electric compressor of claim 3 , wherein only a portion of the finished part claim 3 , which is brought in contact with the heating part claim 3 , is formed of a thermal conductive material.5. The electric compressor of claim 2 , wherein the boss part comprises:a boss formed at the other side of the finished part so as to surround the bearing; anda boss hole ...

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Номер записи: 37
30-01-2020 дата публикации

RAPID-RESPONSE COMPRESSED AIR ENERGY STORAGE SYSTEM AND USING METHOD THEREOF

Номер: US20200032802A1
Автор: Chen Laijun, Lu Qiang, MEI Shengwei, Xue Xiaodai, Zhang Tong, Zhang Xuelin, Zheng Tianwen
Принадлежит:

The present disclosure relates to the field of energy storage, and provides a rapid-response energy storage system and a using method thereof. The system comprises an air storage chamber, a compressor unit, an expander unit, a compressor unit lubrication station, an expander unit lubrication station, a compressor unit oil cooler, an expander unit oil cooler, a compressor unit oil pump and an expander unit oil pump; an outlet of the compressor unit communicates with an inlet of the air storage chamber through a heating pipe inside the expander unit lubrication station, and an outlet of the air storage chamber communicates with a heating pipe inside the compressor unit lubrication station sequentially through a regulating valve and the expander unit; the compressor unit lubrication station, the compressor unit oil pump, an oil way inside the compressor unit and the high-temperature side of the compressor unit oil cooler are sequentially connected end to end to form a first oil circulation loop; and the expander unit lubrication station, the expander unit oil pump, an oil way inside the expander unit and the high-temperature side of the expander unit oil cooler are sequentially connected end to end to form a second oil circulation loop. According to the present disclosure, rapid responses can be achieved and the lubricating oil can be heated without the consumption of external thermal energy. 1. A rapid-response energy storage system , comprising an air storage chamber , a compressor unit , an expander unit , a compressor unit lubrication station , an expander unit lubrication station , a compressor unit oil cooler , an expander unit oil cooler , a compressor unit oil pump , an expander unit oil pump , and an electric motor and a generator respectively connected to the compressor unit and the expander unit , wherein a heating pipe and a temperature sensor are disposed inside each of the compressor unit lubrication station and the expander unit lubrication station;an ...

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Номер записи: 38
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: 39
01-05-2014 дата публикации

Sealed Scroll Compressor for Helium

Номер: US20140119971A1
Автор: Masao Shiibayashi, Takamasa Adachi, Yasushi Izunaga
Принадлежит: Hitachi Appliances Inc

A suction chamber and the oil injection port are linked, under a certain range of revolution angle, via a suction working chamber formed in the radially outer side by a orbiting scroll outer curve and a fixed scroll inner curve under a certain range of revolution angle. An opening of the oil injection port is provided on a bottom surface between teeth of the fixed scroll so that the suction working chamber formed, in a radially inner side, by a orbiting scroll inner curve and a fixed scroll outer curve and the suction chamber are positioned not to be linked with the oil injection port.

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Номер записи: 40
11-02-2016 дата публикации

SHAFT SEAL FOR AN OPEN-DRIVE COMPRESSOR

Номер: US20160040668A1
Автор: FRITTS Ryan Michael, OURADA Timothy James, WOZNIAK Troy
Принадлежит:

Devices and methods for maintaining lubrication of a shaft seal of an open-drive compressor that is operating in a vacuum condition. The external side of the shaft seal allows retention of a volume of lubricant for extending the lifespan of the shaft seal for the open-drive compressor. The devices can also reduce and/or prevent deterioration of the shaft seal regardless of the operation condition of the open-drive compressor. The devices can further reduce and/or prevent leakage of a lubricant and/or refrigerant that can cause deterioration of components within a transport refrigeration unit (TRU). 1. A seal cover assembly for a compressor of a refrigeration unit , comprising:a seal cover configured to separate a suction side of a shaft seal from an external side cavity of the shaft seal and configured to maintain a volume of lubricant within the seal cover during a vacuum condition; anda drain tube connected to the external side cavity, wherein the drain tube includes a check valve for slowing a flow of the lubricant out of the external side cavity when in a vacuum condition.2. The seal cover assembly as in claim 1 , wherein the seal cover includes:a center opening; andan inner surface facing the center opening, the inner surface including a lubricant drain channel connected to a drain hole, the lubricant drain channel being configured to maintain a volume of lubricant in the external side cavity so that only lubricant above the volume is directed to flow to the drain hole.3. The seal cover assembly as in claim 1 , wherein the seal cover includes:a center opening; andan inner surface facing the center opening, the inner surface including a drain inlet, the drain inlet being configured to maintain a volume of lubricant in the external side cavity so that only lubricant above the volume is directed to flow through the drain inlet.4. The seal cover assembly as in claim 1 , wherein the seal cover does not have a continuously open vent to the ambient atmosphere.5. The ...

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Номер записи: 41
09-02-2017 дата публикации

MOTOR VEHICLE VACUUM PUMP HAVING AN ADHESIVE

Номер: US20170037851A1
Автор: Jakubowski Jurgen, Pyrdock Benjamin, Schönwald Freddy, SCZESNY Carsten, ZIEHR Daniel
Принадлежит:

The invention relates to a motor vehicle vacuum pump having a pump housing surface, on which a noise absorption cap is mounted, said cap defining a noise damping volume. 1. A motor vehicle vacuum pump having a pump housing surface on which a noise absorption cap is mounted , the noise absorption cap defining a noise damping volume , wherein a double-sided adhesive connector is arranged between the pump housing surface and the noise absorption cap , the adhesive connector performing both a sealing function and a fastening function in addition to a noise decoupling function.2. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is formed integrally from a viscoelastic material.3. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is produced from an acrylate.4. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is of annular design.5. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is of almost circular design.6. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector has surfaces for adhesively bonding additional fastening lugs of the pump cover and of the noise absorption cap .7. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector is embodied and arranged in such a way that the noise absorption cap is acoustically decoupled from the pump housing cover.8. The motor vehicle vacuum pump as claimed in claim 1 , wherein the double-sided adhesive connector claim 1 , the noise absorption cap and the pump housing surface differ in hardness claim 1 , with the result that the noise absorption cap is vibrationally decoupled from the pump housing cover. This application is a U.S. National Stage of International Application No. PCT/EP2015/053577, filed Feb. 20, 2015 and which claims priority to German ...

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Номер записи: 42
07-02-2019 дата публикации

Compressor Assembly With Directed Suction

Номер: US20190041106A1
Автор: PISCOPO Matthew Thomas
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a shell assembly, a compression mechanism and a conduit. The shell assembly may include a fitting through which fluid is received from outside of the compressor. The compression mechanism may be disposed within a chamber defined by the shell assembly. The conduit may extend through the chamber between the fitting and a suction inlet of the compression mechanism and transmit at least a portion of the fluid from the fitting to the suction inlet. 1. A compressor comprising:a shell assembly having a fitting through which fluid is received from outside of the compressor;a first scroll disposed within a chamber defined by the shell assembly, the first scroll including a first end plate and a first spiral wrap extending from the first end plate;a second scroll disposed within the chamber and including a second end plate and a second spiral wrap extending from the second end plate, the first and second spiral wraps meshing with each other to define compression pockets; anda conduit including a body and a mounting ring, the body extending through the chamber between the fitting and a suction inlet of the first scroll and transmitting at least a portion of the fluid from the fitting to the suction inlet, the mounting ring extending around and engaging a cylindrical surface of the first scroll.2. The compressor of claim 1 , wherein the conduit includes an inlet adjacent the fitting and an outlet adjacent the suction inlet of the first scroll claim 1 , wherein the mounting ring is attached to the body adjacent the outlet.3. The compressor of claim 2 , wherein the mounting ring includes a plurality of tabs that are circumferentially spaced apart from each other claim 2 , wherein the tabs extend radially inward and contact the cylindrical surface of the first scroll.4. The compressor of claim 3 , wherein the first scroll includes a block extending radially outward from the cylindrical surface claim 3 , and wherein one of the tabs of the mounting ring is ...

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Номер записи: 43
07-02-2019 дата публикации

Compressor Assembly With Directed Suction

Номер: US20190041107A1
Автор: Brian L. REID, Matthew Thomas PISCOPO
Принадлежит: Emerson Climate Technologies Inc

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

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Номер записи: 44
23-02-2017 дата публикации

Three stage scroll vacuum pump

Номер: US20170051744A1
Автор: Shaffer Robert W.
Принадлежит:

A three stage vacuum pump has three stages of fixed scrolls and orbiting scrolls that operate simultaneously. A motor drives the second orbiting scroll within the third fixed scroll upon three equally spaced idlers. One idler then transmits rotation and torque into the second stage. The second orbiting scroll has involutes upon both surfaces to engage the second fixed scroll inwardly and the first fixed scroll outwardly. The first fixed scroll has fins upon its back that extend into the atmosphere to transfer heat to air cool the pump. This pump also has a fan accelerating heat transfer. The pump operates the scrolls directly from a motor or from a motor and magnetic coupling so that the atmosphere does not infiltrate the pump. 1. A three stage vacuum pump for producing a vacuum comprising:a first stage having a first fixed scroll connected to a housing and a first orbiting scroll, said first fixed scroll communicating to a space selected for evacuation, said first orbiting scroll having an inner face and an opposite outer face, said outer face of said first orbiting scroll meshing with said first fixed scroll;a second stage adjacent to said first stage inwardly, said second stage in gaseous communication to said first stage, said second stage having a second fixed scroll, said second fixed scroll meshing with said inner face of said first orbiting scroll;a third stage spaced inwardly of said second stage, said third stage in gaseous communication to said second stage, said third stage having a third fixed scroll and a second orbiting scroll, said second orbiting scroll meshing with said third fixed scroll;a driving pin journaled to say second orbiting scroll opposite said third fixed scroll;a motor operatively connected to said driving pin, said motor imparting rotation to said driving pin, said motor being generally opposite said first fixed scroll and outwardly of said second orbiting scroll; and,said motor rotating said first orbiting scroll and said second ...

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Номер записи: 45
05-03-2015 дата публикации

COMPRESSOR ASSEMBLY WITH LIQUID SENSOR

Номер: US20150064040A1
Автор: BROSTROM Troy R., Kulkarni Sunil S., VAN HOOSE RONALD L.
Принадлежит:

A compressor may include a shell, a compression mechanism, first and second temperature sensors, and a control module. The shell may define a lubricant sump. The compression mechanism may be disposed within the shell and may be operable to compress a working fluid. The first temperature sensor may be at least partially disposed within the shell at a first position. The second temperature sensor may be at least partially disposed within the shell at a second position that is vertically higher than the first position. The control module may be in communication with the first and second temperature sensors and the pressure sensor and may determine whether a liquid level in the lubricant sump is below a predetermined level based on data received from the first and second temperature sensors. 1. A compressor comprising:a shell defining a lubricant sump;a compression mechanism disposed within said shell and operable to compress a working fluid;a first temperature sensor at least partially disposed within said shell at a first position;a second temperature sensor at least partially disposed within said shell at a second position that is vertically higher than said first position; anda control module in communication with said first and second temperature sensors, said control module determining a difference between a first temperature measurement from said first temperature sensor and a second temperature measurement from said second temperature sensor, said control module determining whether a liquid level in said lubricant sump is below a predetermined level based on said difference.2. The compressor of claim 1 , further comprising a pressure sensor disposed at least partially within said shell claim 1 , wherein said control module determines whether said liquid level is below said predetermined level based on whether data from said pressure sensor indicates a presence of liquid working fluid in said shell.3. The compressor of claim 1 , wherein said control module ...

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Номер записи: 46
02-03-2017 дата публикации

ROTOR FOR A COMPRESSOR SYSTEM HAVING INTERNAL COOLANT MANIFOLD

Номер: US20170058901A1
Автор: Collins James Christopher, Collins Stephen James, Valentine Willie Dwayne
Принадлежит:

A rotor for a compressor system includes a rotor body having a coolant manifold with an inlet runner and a plurality of coolant supply conduits extending from the inlet runner toward an inner heat exchange surface. The coolant supply conduits may have a circumferential and axial distribution, and extend through struts enhancing stiffness in the rotor body. 1. A rotor for a compressor system comprising:a rotor body defining a longitudinal axis extending between a first axial body end and a second axial body end, and having an outer compression surface structured to impinge during rotation of the rotor body upon a gas conveyed between a gas inlet and a gas outlet in a housing;the rotor body further including an inner heat exchange surface defining a cooling cavity, and having formed therein a coolant inlet, a coolant outlet in fluid communication with the cooling cavity, and a coolant manifold; andthe coolant manifold having an inlet runner fluidly connected with the coolant inlet, and a plurality of coolant supply conduits having an axial and circumferential distribution and extending outwardly from the inlet runner so as to direct a coolant fluid toward the inner heat exchange surface.2. The rotor of wherein the rotor body further includes a longitudinal central column claim 1 , and a plurality of struts connecting between the central column and the inner heat exchange surface claim 1 , and wherein the inlet runner extends through the central column and the plurality of coolant supply conduits extend through the plurality of struts.3. The rotor of wherein the plurality of struts are oriented so as to axially advance toward the second axial end.4. The rotor of wherein the rotor body further includes another plurality of struts connecting between the central column and the inner heat exchange surface and oriented so as to axially advance toward the first axial end.5. The rotor of wherein each of the plurality of struts includes a spray orifice fluidly connecting the ...

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Номер записи: 47
28-02-2019 дата публикации

SCREW COMPRESSOR

Номер: US20190063438A1
Автор: HAMADA Katsunori, Nakamura Hajime, TSUBOI Noboru
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A screw compressor is provided with: a compressor body in which a screw rotor is accommodated in a rotor casing; a motor in which a rotator and a stator are accommodated in a motor chamber, the motor for rotationally driving a rotor shaft through use of a motor shaft; axial liquid supplying parts, provided on an anti-rotor side of the motor shaft; a motor shaft cooling part which is a cavity extending in the axial direction inside the motor shaft, the motor shaft cooling part for cooling the motor shaft by circulating a cooling liquid through the inside of the cavity thereof; and a liquid outlet part positioned on a rotor side of the motor shaft or a motor side of the rotor shaft and fluidically connected to the motor shaft cooling part so as to extend radially inward from an outlet opening formed in an outer surface of the motor shaft or the rotor shaft. 1. A screw compressor comprising:a compressor body in which a screw rotor is accommodated in a rotor casing;a motor in which a rotor and a stator are accommodated in a motor chamber of a motor casing, the motor arranged to rotationally drive a rotor shaft of the screw rotor through a motor shaft fixed to the rotor;a shaft liquid supplying part provided on an anti-rotor side of the motor shaft to supply coolant;a motor shaft cooling part which is a cavity extending in the axial direction within the motor shaft, the motor shaft cooling part arranged to cool the motor shaft with coolant supplied through the shaft liquid supplying part flowing through the cavity; anda liquid outlet part positioned on a rotor side of the motor shaft or a motor side of the rotor shaft and extending radially inward from an outlet opening formed in an outer surface of the motor shaft or the rotor shaft to be connected fluidically with the motor shaft cooling part.2. The screw compressor according to claim 1 , whereina discharge side of the rotor casing is connected to the motor casing, andthe rotor shaft is coupled coaxially with the motor ...

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Номер записи: 48
08-03-2018 дата публикации

Compressor

Номер: US20180066657A1
Автор: IGNATIEV Kirill M., PEREVOZCHIKOV Michael M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a shell, a compression mechanism, a driveshaft, a motor assembly, and a stator support member. The compression mechanism is disposed within the shell. The driveshaft drivingly is engaged with the compression mechanism. The motor assembly may be disposed within the shell and is drivingly engaged with the driveshaft. The motor assembly includes a rotor and a stator. The stator is fixed relative to the shell. The rotor may include an axially extending portion and a radially extending portion. The axially extending portion may be disposed radially outward relative to the stator. The radially extending portion may engage the driveshaft and may be disposed axially between the stator and the compression mechanism. The stator support member may be fixed relative to the shell and the stator. The stator support member may extend longitudinally through at least a portion of the stator. 1. A compressor comprising:a shell;a compression mechanism disposed within the shell;a driveshaft drivingly engaged with the compression mechanism;a motor assembly disposed within the shell and drivingly engaged with the driveshaft, the motor assembly including a rotor and a stator, the stator is fixed relative to the shell, the rotor including an axially extending portion and a radially extending portion, the axially extending portion disposed radially outward relative to the stator, the radially extending portion engaging the driveshaft and disposed axially between the stator and the compression mechanism; anda stator support member fixed relative to the shell and the stator, the stator support member extending longitudinally through at least a portion of the stator and axially spaced apart from the drive shaft.2. The compressor of claim 1 , further comprising a bearing housing rotatably supporting the driveshaft claim 1 , wherein the radially extending portion of the rotor is disposed axially between the stator and the bearing housing.3. The compressor of claim 2 , ...

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Номер записи: 49
08-03-2018 дата публикации

COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

Номер: US20180066873A1
Автор: Maeyama Hideaki
Принадлежит:

A compressor for use in a refrigerant circuit using a refrigerating machine oil being free of phosphoric ester and a refrigerant mixture inclusive of 1,1,2-trifluoroetylene includes a rolling piston and a vane in contact with the rolling piston in a slidable manner. The rolling piston and the vane are formed of a base metal, the base metal being steel, and the base metal is exposed at a contact portion between the rolling piston and the vane 1. A compressor for use in a refrigerant circuit using a refrigerating machine oil being free of phosphoric ester and a refrigerant mixture inclusive of 1 ,1 ,2-trifluoroetylene , the compressor comprising:a first member formed of a base metal, the base metal being steel, the first member including a first contact portion; anda second member including a second contact portion being in contact with the first contact portion of the first member in a slidable manner, whereinthe base metal of the first member is exposed at the first contact portion.2. The compressor of claim 1 , further comprising:a cylinder including a compression chamber;a rolling piston rotating in the compression chamber; anda vane separating the compression chamber into two spaces, the vane having an edge being in contact with an outer peripheral surface of the rolling piston,wherein at least one of the rolling piston and the vane is the first member.3. A refrigeration cycle apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a refrigerant circuit including the compressor of ;'}a refrigerant mixture inclusive of 1,1,2-trifluoroethylene and used in the refrigerant circuit; anda refrigerating machine oil being free of phosphoric ester and used in the refrigerant circuit.4. The refrigeration cycle apparatus of claim 3 , wherein no anti-wear agent is added to the refrigerating machine oil.5. The refrigeration cycle apparatus of claim 3 , wherein the refrigerating machine oil has a saturated water content of 1000 wt ppm or more.6. The ...

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Номер записи: 50
09-03-2017 дата публикации

COMPRESSOR

Номер: US20170067468A1
Автор: "OHANLEY HARRISON", NELSON ANDREW, PITTS JEREMY, SANTEN JOHANNES, SANTOS PEDRO, WALTON JOHN, WESTWOOD MITCHELL
Принадлежит:

A positive displacement rotary compressor is designed for near isothermal compression, high pressure ratios, high revolutions per minute, high efficiency, mixed gas/liquid compression, a low temperature increase, a low outlet temperature, and/or a high outlet pressure. Liquid injectors provide cooling liquid that cools the working fluid and improves the efficiency of the compressor. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. 1. A positive displacement compressor , comprising:a rotor casing that includes a compression chamber with a first end, a second end, and an inner curved surface;a shaft located axially in the compression chamber;a non-circular rotor mounted for rotation with the shaft relative to the casing, the non-circular rotor having a sealing portion, the sealing portion having a curved surface that corresponds with the inner curved surface of the compression chamber, and a non-sealing portion;a gate having a first end and a second end, and being operable to move relative to the casing to locate the first end proximate to the rotor as the rotor rotates.2. The positive displacement compressor of claim 1 , further comprising at least one liquid injection nozzle located to provide injected fluids into the compression chamber claim 1 , wherein the at least one liquid injection nozzle is configured to provide an atomized liquid spray.3. The positive displacement compressor of claim 1 , further comprising at least one liquid injector positioned to inject liquid into an area within the compression chamber where compression occurs during operation of the compressor.4. The positive displacement compressor of claim 1 , further comprising at least one liquid injector connected with the rotor casing to inject liquids into the compression chamber.5. The positive displacement compressor of claim 1 , wherein:the rotor has a first end and a second end aligned horizontally;the gate is located at the ...

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Номер записи: 51
29-05-2014 дата публикации

Rocking piston compressor with sound dissipation

Номер: US20140147300A1
Автор: Christopher Lee Blackburn
Принадлежит: Gast Manufacturing Inc

Dual cylinder and single cylinder rocking piston compressors with sound attenuation are disclosed. Due to the tapered shape intake and exhaust chamber sides and tops, the gas flow is accelerated and decelerated through the compressors thereby allowing sound energy to be dissipated. Sound attenuation is further enhanced by the addition of baffles, which divide each chamber into a series of smaller attenuation chambers. The baffles also cause the gas flow to accelerate and decelerate as the gas flow passes the baffles. In the case of a dual cylinder rocking piston compressor, enlarging the crossover passageway diameters also creates additional sound attenuation chambers, which contribute to the overall reduction in sound. Further, by using dedicated seals for each intake in exhaust chamber, flow leakage at higher pressures is decreased, thereby improving compressor efficiencies.

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Номер записи: 52
11-03-2021 дата публикации

EGR PUMP SYSTEM AND CONTROL METHOD OF EGR PUMP

Номер: US20210071664A1
Автор: Biller Brandon Dennis, Drummond Jesse, Fortini Matthew, Hughes Douglas Anthony, Spring Jim Kevin
Принадлежит:

Exhaust gas recirculation pump () for an internal combustion engine that includes an electric motor () disposed within a housing (). A Roots device () is coupled to the electric motor () and includes a housing () defining an internal volume () in which rotors () are disposed and are connected to the electric motor (). The electric motor housing () includes a coolant path () formed therein which extends from a coolant inlet () to a coolant outlet (), both coupled to an engine coolant circulation system. The housing includes an oil path () formed therein. The oil path includes an oil inlet () extending to at least one oil outlet (). The oil inlet and outlet are coupled to an engine oil circulation system wherein the oil path () lubricates bearings () and a transmission assembly () of the exhaust gas recirculation pump (). 1. An exhaust gas recirculation pump for an internal combustion engine comprising:an electric motor assembly including an electric motor disposed within an electric motor housing;a roots device coupled to the electric motor, the roots device including a housing defining an internal volume;rotors disposed in the internal volume and connected to the electric motor;wherein the electric motor housing includes a coolant path formed therein, the coolant path including a coolant inlet extending to a coolant outlet, said coolant inlet and outlet coupled to an engine coolant circulation system.2. The exhaust gas recirculation pump of wherein the electric motor housing includes an end plate attached thereon claim 1 , the end plate including end plate inner and outer surfaces.3. The exhaust gas recirculation pump of wherein the end plate includes a coolant inlet slot formed therein extending between the end plate inner and outer surfaces claim 2 , the coolant inlet slot linked to the coolant inlet.4. The exhaust gas recirculation pump of wherein the end plate includes a coolant labyrinth formed on the end plate outer surface claim 2 , the labyrinth extending ...

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Номер записи: 53
05-06-2014 дата публикации

Scroll Fluid Machine

Номер: US20140154122A1
Автор: IWANO Kiminori, KOBAYASHI Yoshio, SADAKATA Kosuke
Принадлежит: Hitachi Industrial Equipment Systems Co., Ltd.

A scroll fluid machine having: a compressor body including a fixed scroll and an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting; a drive shaft connected to the orbiting scroll; a cooling fan provided on another side of the drive shaft opposite to the orbiting scroll, the cooling fan generating a cooling wind; and a cooling wind passage surrounded by walls in all directions, the cooling wind passage sending the cooling wind of the cooling fan to the compressor body, when the cooling wind passage being disposed left and the drive shaft being disposed right when seen from a direction in which the drive shaft extends, a size of the cooling wind passage in the left and right directions being smaller in upstream than downstream of the cooling wind passage. 1. A scroll fluid machine comprising:a compressor body having a fixed scroll and an orbiting scroll, opposed to the fixed scroll, to make orbiting motions;a drive shaft connected to the orbiting scroll;a cooling fan provided on another side of the drive shaft opposite to the orbiting scroll, the cooling fan generating a cooling wind; anda cooling wind passage surrounded by walls in all directions, the cooling wind passage sending the cooling wind of the cooling fan to the compressor body,wherein assuming that the cooling wind passage is disposed left and the drive shaft is disposed right, as seen from a direction in which the drive shaft extends, a size of the cooling wind passage in the left and right directions is smaller in upstream than downstream of the cooling wind passage.2. The scroll fluid machine according to claim 1 , whereinin the cooling wind passage, an inside of an outlet is closer to the drive shaft than an inside of an inlet is.3. The scroll fluid machine according to claim 1 , whereinthe dimension of the cooling wind passage in upper and lower directions is larger upstream than downstream.4. The scroll fluid machine according to claim 1 , whereina fan casing having the ...

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Номер записи: 54
16-03-2017 дата публикации

COMPRESSOR DEVICE AND A COOLER THEREBY USED

Номер: US20170074268A1
Автор: DE KERPEL Stefan Paul M.
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

A compressor device with at least two compressor elements connected in series and at least two coolers of which there at least two split coolers that are split in separate successive stages, respectively a hot stage and a cold stage, that are connected together in one or more separate cooling circuits such that the compressed gas is cooled sufficiently between the compressor elements with a minimum coolant flow rate to keep the temperature of the cooled gas at the outlet of each cooler below a maximum permissible value and thereby to realise a desired temperature increase of the coolant in at least one of the aforementioned cooling circuits. 125-. (canceled)26. A compressor device for compressing gas in two or more stages , whereby this compressor device comprises at least two compressor elements connected in series and at least two coolers for cooling the compressed gas , i.e. an intercooler between each of two successive compressor elements , and if need be depending on the configuration , an aftercooler downstream from the last compressor element , whereby each cooler is provided with a primary section through which the compressed gas to be cooled is guided and a secondary section that is in heat-exchanging contact with the primary section and through which coolant is guided , wherein at least two of the aforementioned coolers are split coolers whose secondary section is split into at least two separate stages to cool the gas that is guided through the primary section in successive stages , respectively at least a hot stage for a first cooling of the hot gas that flows into the primary section of the coolers and a cold stage for the further cooling of this gas , whereby the stages of the secondary sections of the coolers are connected together in one or more separate cooling circuits such that the compressed gas between the compressor elements is sufficiently cooled , with a minimum coolant flow rate through the cooling circuits , to keep the temperature of the ...

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Номер записи: 55
18-03-2021 дата публикации

GEAR PUMP AND GEAR MOTOR

Номер: US20210079917A1
Автор: MURATA Kazuma
Принадлежит: SHIMADZU CORPORATION

Provided is a gear pump and a gear motor in which noise is reduced. A gear pump includes: gears which mesh and pair with each other; a casing including a gear housing chamber for housing the gears; and at least one hollow layer which is configured in the casing and divides the casing into at least inner walls and outer walls. Coincidence critical frequency of the inner walls and coincidence critical frequency of the outer walls are different. The hollow layer is formed between the gear housing chamber in the casing and an outer surface of the casing. 1. A gear pump comprising:gears which mesh and pair with each other;a casing which comprises a gear housing chamber for housing the gears; andat least one hollow layer which is configured in the casing and divides the casing into at least inner walls and outer walls.2. The gear pump according to claim 1 , wherein coincidence critical frequency of the inner walls and coincidence critical frequency of the outer walls are different.3. The gear pump according to claim 1 , wherein the hollow layer is configured between the gear housing chamber in the casing and an outer surface of the casing.4. The gear pump according to claim 2 , wherein the hollow layer is configured between the gear housing chamber in the casing and an outer surface of the casing.5. The gear pump according to claim 1 , wherein the at least one hollow layer comprises a plurality of the hollow layers.6. The gear pump according to claim 2 , wherein the at least one hollow layer comprises a plurality of the hollow layers.7. The gear pump according to claim 3 , wherein the at least one hollow layer comprises a plurality of the hollow layers.8. The gear pump according to claim 4 , wherein the at least one hollow layer comprises a plurality of the hollow layers.9. A gear motor comprising:gears which mesh and pair with each other;a casing which comprises a gear housing chamber for housing the gears; andat least one hollow layer which is configured in the casing ...

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Номер записи: 56
31-03-2022 дата публикации

ELECTRICAL SCREW SPINDLE COOLANT PUMP

Номер: US20220099088A1
Автор: DÖHLER Daniel, Pawellek Franz
Принадлежит: NIDEC GPM GmbH

An electrical screw spindle coolant pump is suitable for conveying a coolant circuit or other corrosive, liquid media. The electrical screw spindle coolant pump has a spindle housing with a spindle chamber and an axially adjacent motor housing. The motor housing has a motor chamber, in which a dry-running electric motor is arranged separated from the flow current. The motor housing has a thermal transition portion through which the flow current flows. The thermal transition portion is arranged between the motor chamber and a component boundary of the motor housing to the spindle housing. 1. An electric screw coolant pump for delivering a coolant circulation comprising:a spindle housing having a spindle chamber in which at least two screw spindles are rotatably accommodated;a pump inlet and a pump outlet for guiding a delivery flow through the spindle chamber;a motor housing arranged axially adjacent to the spindle housing;whereinthe motor housing includes a motor chamber in which a dry-running electric motor is arranged so the motor chamber is delimited with respect to the delivery flow; andthe motor housing comprises a heat transfer section, through which the delivery flow flows, arranged between the motor chamber and a component boundary between the motor housing and the spindle housing.2. The electric screw coolant pump according to claim 1 , whereinthe heat transfer section includes the pump outlet.3. The electric screw coolant pump according to claim 1 , whereinthe heat transfer section includes a delivery flow chamber that establishes a connection between a frontal delimitation of the motor chamber and the spindle chamber.4. The electric screw coolant pump according to claim 1 , whereinthe heat transfer section includes a bearing seat for a shaft bearing arranged between the electric motor and the screw spindles.5. The electric screw coolant pump according to claim 1 , whereinan electronic system for the electric motor is arranged inside the motor chamber.6. ...

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Номер записи: 57
12-03-2020 дата публикации

LIGHTWEIGHT VACUUM PUMP WITH OXIDIZED SURFACES

Номер: US20200080561A1
Автор: Hong Tinggui
Принадлежит: Fieldpiece Instruments, Inc.

A light weight vacuum pump is made with either or all of the stator, rotors and vanes made of aluminum or aluminum alloy that has been subjected to high energy oxidation, such as plasma electrolytic oxidation (PEO), electrolytic plasma oxidation (EPO) or micro-arc oxidation (MAO), to treat and harden the surface. 1. A vacuum pump system comprising:a motor; anda vacuum pump operably connected to the motor, the vacuum pump having one or more rotors and one or more stators formed from material selected from the group consisting of aluminum, aluminum alloy or sintered aluminum powder, wherein the one or more rotors and one or more stators are treated with a high energy oxidation process selected from the group consisting of plasma electrolytic oxidation, electrolytic plasma oxidation, micro-arc oxidation or spark discharge anodizing.2. The vacuum pump system of further comprising:a plurality of vanes operably connected to the one or more rotors wherein the plurality of vanes are formed of material selected from the group consisting of aluminum, aluminum alloy or sintered aluminum powder, and wherein the plurality of vanes are treated with a high energy oxidation process selected from the group consisting of plasma electrolytic oxidation, electrolytic plasma oxidation, micro-arc oxidation or spark discharge anodizing.3. The vacuum pump system of further comprising:a plurality of vanes operably connected to the one or more rotors wherein the plurality of vanes are formed of material selected from the group consisting of untreated polymer, carbon or graphite.4. The vacuum pump system of further comprising:an oil pump operatively connected to one of the one or more rotors.5. The vacuum pump system of further comprising:an oil tank configured to submerge the vacuum pump in oil during operation.6. A vacuum pump comprising:a stator having a cylindrical volute with a cylindrical inner wall, a first end wall and a second end wall;a rotor rotatably disposed within the stator, ...

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Номер записи: 58
21-03-2019 дата публикации

Compact Sound Suppressing Muffler for Breast Vacuum Pumps

Номер: US20190083688A1
Автор: Garbez Dan, Paul Dave, Sutton Ben
Принадлежит:

A sound suppression system for reducing or eliminating sound produced by the operation of a breast vacuum pump includes a sound suppressing muffler assembly having an air entry port adapted to communicate with an air outlet port of a vacuum pump or other air flow generating device. The sound suppressing muffler assembly also includes a muffler housing defining an internal space communicating with the air entry port, and an opening in the housing leading to atmosphere. The muffler housing has a tortuous air path in the muffler housing. In one embodiment, sound absorbing porous foam structure is disposed in the tortuous air path. The at least one sound absorbing porous structure absorbs sound energy from the air as the air moves through the at least one air path toward the opening in the muffler housing. In further embodiments, a tortuous air path is provided between an air entry port and an opening to atmosphere in the muffler assembly. 1. A sound suppression system for reducing or eliminating sound produced by the operation of a breast vacuum pump , comprising:a. a sound suppressing muffler assembly having an air entry port, said air entry port adapted to communicate with an air outlet port of said breast vacuum pump;b. said sound suppressing muffler assembly including a muffler housing defining an internal space communicating with said air entry port;c. said muffler structure having an opening to atmosphere;d. at least one tortuous air path in said muffler structure;e. said tortuous path creating an indirect flow of air through said tortuous path to atmosphere, said indirect air flow suppressing noise energy produced by air moving through said tortuous path.2. The sound suppression system of claim 1 , wherein:said tortuous path comprises at least one sound-absorbing porous structure disposed in said at least one air path, said at least one sound absorbing porous structure absorbing sound energy from said air as said air moves through said at least one air path ...

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Номер записи: 59
25-03-2021 дата публикации

Pump Housing Structure of Three-Axis Multi-Stage Roots Pump

Номер: US20210088046A1
Автор: LI Yue, Rong Yi, Shen Miaole
Принадлежит:

A pump housing structure of a three-axis multi-stage Roots pump is provided, comprising a first-stage pump housing, a second-stage pump housing and a third-stage pump housing, wherein the first-stage pump housing is provided with a first center axial hole, a first left axial hole and a first right axial hole; a fixed bearing end cover is mounted on the side of the first-stage pump housing, three fixed bearing chambers are provided on the surface of the fixed bearing end cover; the second-stage pump housing is provided with a second center axial hole, a second left axial hole and a second right axial hole, the third-stage pump housing is provided with a third center axial hole, a third left axial hole and a third right axial hole, and the end surface at the outer side of the third-stage pump housing is fixedly mounted with a non-driving end bearing end cover. The present invention can accommodate and fix three axes through three fixed bearing chambers, respectively. Moreover, since the sum of the axial lengths of the second-stage pump housing and the third-stage pump housing is equal to the axial length of the first-stage pump housing, it not only can strengthen the center stiffness of the three axes of the Roots pump, but also can ensure that the total axial expansion is evenly divided, reducing the cumulated amount of thermal expansion at the end of the axis. 11231456567619110101110456. A pump housing structure of a three-axis multi-stage Roots pump , comprising a first-stage pump housing () , a second-stage pump housing () and a third-stage pump housing () , wherein: the first-stage pump housing () is provided with a first center axial hole () , a first left axial hole () and a first right axial hole () , the first center axial hole () and the first left axial hole () form a first-stage rotor pump chamber () capable of accommodating a pair of first-stage Roots rotor axes , the first right axial hole () is an independent closed axial hole , one side of the first- ...

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Номер записи: 60
30-03-2017 дата публикации

COMPRESSION REFRIGERATION MACHINE HAVING A SPINDLE COMPRESSOR

Номер: US20170089342A1
Автор: Steffens Ralf
Принадлежит:

The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines. In order to improve the degree of efficiency while providing flexible power adjustment, it is proposed according to the invention that a multi-stage spindle compressor be used as a refrigerant compressor, whose compressor housing and whose spindle rotors are cooled via a partial-flow branch-off of liquid refrigerant from the refrigerant main flow circuit, wherein the compressor housing is cooled in a controlled manner by means of refrigerant evaporation, with the refrigerant vapor being subsequently fed to the inlet, and that, for power adjustment, there are also post-inlet feeds into the working space in addition to the inlet feed, and also pre-outlet discharges in addition to the outlet discharge from the outlet space, each with their own regulating device. 111-. (canceled)12. A compression refrigeration machine comprising a refrigerant main flow circuit , refrigerant located in the refrigerant main flow circuit , and a spindle compressor for conveying and compressing gaseous delivery media , the spindle compressor having a working space and being configured as a 2-shaft rotation compressor machine which operates without operating fluid in the working space and having a 2-tooth spindle rotor , a 3-tooth spindle rotor and a compressor housing which surrounds the spindle rotors and has an inlet space and an outlet collecting space ,wherein the spindle compressor is a multi-stage spindle compressor, the refrigerant main flow circuit has a partial-flow branch-off, and the compressor housing and the spindle rotors are cooled via the partial-flow branch-off with liquid refrigerant from the refrigerant main flow circuit.13. The compression refrigeration machine ...

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Номер записи: 61
05-05-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220136500A1
Автор: Imai Tetsuya, SATO Taizo
Принадлежит: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

[Problem] A scroll compressor is provided which is capable of effectively reducing a pressure loss in a pathway extending from a discharge space to a discharge port.

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Номер записи: 62
05-05-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220136501A1
Автор: Han Nara, KANG Mose, Park Jihoon, YUN Juhwan
Принадлежит:

A scroll compressor is provided that may include a casing, a drive motor, an orbiting scroll, a non-orbiting scroll, and a floating plate provided with a cover portion to cover an area between an outer wall portion and an inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, and a valve accommodating portion that extends from the cover portion so as to accommodate a discharge valve configured to open and close a discharge port. Accordingly, structure for forming a back pressure chamber is simplified to thereby reduce the number of components and man-hours required for assembly.

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Номер записи: 63
19-03-2020 дата публикации

Electric Pump

Номер: US20200088182A1
Автор: Honda Yoshihiko, SHIRAI Naoki, TSUKAMOTO Shota
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

An electric pump includes a first housing member, a second housing member, and a partition. The first housing member includes a first support surface and a first seal surface. The second housing member includes a second support surface and a second seal surface. The partition is directly held between the first support surface and the second support surface to form a pump chamber with the first housing member and to form a motor chamber with the second housing member. The motor chamber houses a motor that includes a stator and a rotor. The pump chamber houses an impeller. The partition supports a bearing for holding a rotation shaft coupled to the rotor and the impeller. The first seal surface and the second seal surface directly hold a seal member therebetween. 1. An electric pump , comprising:a first housing member including a first support surface and a first seal surface;a second housing member including a second support surface and a second seal surface;a partition directly held between the first support surface and the second support surface, the partition, wherein a pump chamber is disposed between the partition and the first housing member and a motor chamber is disposed between the partition and the second housing member;a motor disposed in the motor chamber and including a stator and a rotor;an impeller disposed in the pump chamber;a bearing supported by the partition; anda rotation shaft supported by the bearing and coupled to the rotor and the impeller, anda seal member directly contacting the first seal surface and the second seal surface.2. The electric pump according to claim 1 , wherein:the first support surface is closer to the pump chamber than the first seal surface; andthe second support surface is closer to the motor chamber than the second seal surface.3. The electric pump according to claim 1 , wherein:the first housing member includes a concave part;the second housing member includes a convex part that faces the concave part to form a space ...

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Номер записи: 64
09-04-2015 дата публикации

Rotary Expansible Chamber Devices Having Adjustable Arcs of Rotation, and Systems Incorporating the Same

Номер: US20150098851A1
Автор: Feustel Aaron
Принадлежит:

Rotary expansible chamber (REC) devices having one or more working-fluid ports that are adjustable, for example, in size or location. In some embodiments, the variable port mechanisms can be used to control any one or more of a plurality of operating parameters of a REC device independently of one or more others of the operating parameters. In some embodiments, the REC devices can have a plurality of fluid volumes that change in size during rotation of the REC device, and that transition to a zero volume condition during the rotation of the REC device. Systems are also provided that can include one or more REC devices. Methods for controlling various aspects of REC devices, including methods of controlling one or more operating parameters, are also provided. 1. A rotary expansible chamber device , comprising:a first mechanism comprising a first rotary component, said first mechanism partially bounding at least a first volume, said first volume moving with or substantially with rotation of said first rotary component during operation of the rotary expansible chamber device; anda second mechanism interfacing with said first mechanism to substantially or fully bound said first volume along a first arc of inaccessibility; said first arc of inaccessibility has a first extent and a second extent;', 'said first volume changes size during operation of the rotary expansible chamber device; and', 'said rotary expansible chamber device is designed and configured to allow for selective and independent change of said first and second extents of said first arc of inaccessibility so as to independently control the size of said first volume when said first volume is positioned, respectively, at said first and second extents of said arc of inaccessibility., 'wherein2. A rotary expansible chamber device according to claim 1 , wherein said rotary expansible chamber device has a second arc of inaccessibility claim 1 , the rotary expansible chamber device further comprising:a third ...

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Номер записи: 65
05-04-2018 дата публикации

DEVICE FOR DAMPING PRESSURE FLUCTUATIONS

Номер: US20180093593A1
Автор: Beuschel Michael, HUMPERT Bernhard, RIEPL Johann, Schnell Michael
Принадлежит:

A device (DV) for damping pressure fluctuations in a pressure medium (DM) comprises the following features. It has a base body (GK) in which an intake chamber (AK) is provided, which has an intake-chamber opening (OA) which is located at a first side (S) of the base body. A first expansion chamber (EK) is furthermore provided in the base body, which has a first expansion-chamber opening (OE), which is likewise located at the first side of the base body. A partition wall (T) separates the intake chamber from the first expansion chamber. A cover element (AD) for positioning on a contact surface (AF) of the first side of the base body is furthermore provided in order to close the intake chamber and the first expansion chamber to the outside. Finally, an overflow channel is provided, in particular in the partition wall between the intake chamber and the first expansion chamber, so that pressure fluctuations in the pressure medium are damped during the through-flow from the intake chamber through the first overflow channel into the first expansion chamber. 1. A device for damping pressure fluctuations in a pressure medium , comprising:a base body, anda cover positioned on a contact surface of a first side of the base body;the base body and the cover defining an intake chamber,a boundary of the intake chamber sized and configured to be struck by a pressure medium flow, the boundary comprising an impact surface having a predetermined structure sized and configured to deflect the pressure medium flow.2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. The device as claimed in claim 1 , further comprising a filter element configured to filter out particles from the pressure medium claim 1 , wherein the filter element is disposed in the intake chamber.7. The device as claimed in claim 1 , wherein the contact surface of the first side lies in a plane claim 1 , and wherein the cover has a planar portion which can be brought into contact with the contact surface.8. The device ...

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Номер записи: 66
01-04-2021 дата публикации

Fluid-injected compressor installation

Номер: US20210095668A1
Автор: Cornelis Theodorus Philippi, Kristof Adrien Laura Martens
Принадлежит: Atlas Copco Airpower NV

Fluid-injected compressor installation ( 1 ) which is provided with: a screw compressor ( 2 ) with a compression housing ( 4 ) in which a pair of compressor rotors ( 6 a, 6 b ) are mounted; a drive motor ( 3 ) with a motor housing ( 9 ) in which a motor shaft ( 11 ) is mounted which drives the compressor rotors ( 6 a, 6 b ); an inlet ( 7 ) and an outlet ( 8 ) on the screw compressor ( 2 ) for the supply of a gas and for the discharge of compressed gas; with the compression housing ( 4 ) and the motor housing ( 9 ) being directly joined to each other; characterised in that the compressor installation ( 1 ) is provided with: a gear transmission ( 20 ) between the shaft ( 16 ) of one of the compressor rotors ( 6 a, 6 b ) and the motor shaft ( 11 ), consisting of a driven gear ( 18 ) and a driving gear ( 19 ); a motor bearing ( 21 ) on the motor shaft ( 11 ) next to the driving gear ( 19 ), and a dynamic seal ( 25 ) next to the aforementioned motor bearing ( 21 ), on the drive motor ( 3 ) side, such that the motor bearing ( 21 ) is between the driving gear ( 19 ) and the seal ( 25 ).

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Номер записи: 67
01-04-2021 дата публикации

ROTARY COMPRESSOR

Номер: US20210095671A1
Автор: Shimizu Takashi
Принадлежит:

A rotary compressor includes a compression mechanism having a cylinder, a piston, and a Helmholtz muffler. The Helmholtz muffler has a resonance chamber in the compression mechanism and a communication groove formed on an end face of the cylinder to connect the cylinder and resonance chambers. The communication groove is open at the end face of the cylinder and has a pair of side wall portions and a bottom wall portion between the side wall portions. Each side wall portion has a first portion adjacent an open end of the communication groove and a second portion adjacent the bottom wall portion. A surface of the first portion is a flat or bowed surface. A surface of the second portion is a bowed surface having a predetermined curvature so as to be connected to the surface of the first portion and a surface of the bottom wall portion. 1. A rotary compressor comprising:a compression mechanism including a cylinder having a cylinder chamber, a piston rotating eccentrically inside the cylinder chamber, and a Helmholtz muffler,the Helmholtz muffler having a resonance chamber provided in the compression mechanism, and a communication groove formed on an end face of the cylinder to connect the cylinder chamber and the resonance chamber together,the communication groove being a bottomed groove that is open at the end face of the cylinder, the communication groove having a pair of side wall portions and a bottom wall portion located between the side wall portions,the side wall portions each having a first portion adjacent an open end of the communication groove, and a second portion adjacent the bottom wall portion of the communication groove, anda surface of the first portion being formed as a flat or bowed surface, a surface of the second portion being formed as a bowed surface having a predetermined curvature so as to be connected to the surface of the first portion and a surface of the bottom wall portion.2. The rotary compressor of claim 1 , whereinthe surfaces of the ...

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Номер записи: 68
26-06-2014 дата публикации

ELECTRIC PUMP

Номер: US20140178219A1
Автор: Kim Chanseok
Принадлежит:

An electric pump includes a housing and a motor unit having a stator disposed in the housing. A rotor is rotatably disposed on the stator and a rotating shaft is inserted in and passing through the rotor. A pump comprises an inner rotor coupled to one end of the rotating shaft and an outer rotor, and the pump has an inserting recess for receiving the pump. 1. An electric pump , comprising:a housing;a motor including a stator disposed in the housing, a rotor rotatably disposed on the stator and a rotating shaft inserted in and passing through the rotor; anda pump comprising an inner rotor coupled to one end of the rotating shaft and an outer rotor,wherein the housing has an inserting recess for receiving the pump.2. The electric pump of claim 1 , wherein the housing comprises a main channel formed on a bottom surface of the inserting recess claim 1 , the main channel is connected to a fluid inlet and a fluid outlet formed on an outside of the housing claim 1 , and fluid is pumped to the main channel.3. The electric pump of claim 2 , wherein the housing comprises an inlet channel connecting the fluid inlet to the main channel and an outlet channel connecting the fluid outlet to the main channel.4. The electric pump of claim 3 , wherein the main channel comprises a first main channel connected to the inlet channel and a second main channel connected to the outlet channel.5. The electric pump of claim 1 , wherein the housing comprises a through hole formed at a central portion of the bottom surface of the inserting recess claim 1 , and the rotating shaft passes through the through hole.6. The electric pump of claim 5 , further comprising a first bearing disposed on an inner wall of the through hole to rotatably support the rotating shaft.7. The electric pump of claim 6 , further comprising a gap formed between the through hole and the rotating shaft claim 6 , the fluid entering the first bearing through the gap.8. The electric pump of claim 6 , further comprising a ...

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Номер записи: 69
12-04-2018 дата публикации

BEARING PLATE FOR SUPERCHARGER

Номер: US20180100544A1
Автор: HOPKINS Justin, Swartzlander Matthew
Принадлежит: EATON CORPORATION

A supercharger constructed in accordance to one example of the present disclosure includes a housing, first and second rotors, a bearing plate and a pair of sleeves. The first and second rotors are received in cylindrical overlapping chambers of the housing, the first rotor supported by a first rotor shaft, the second rotor supported by a second rotor shaft. The bearing plate is coupled to the housing and has an oil cavity side and an air cavity side. The bearing plate is formed of aluminum. The pair of sleeves can be received by the bearing plate and support respective bearings rotatably supporting respective first and second axle shafts. The pair of sleeves are formed of steel. 1. A supercharger comprising:a housing;a first rotor and a second rotor received in cylindrical overlapping chambers of the housing, the first rotor supported by a first rotor shaft, the second rotor supported by a second rotor shaft; anda bearing plate coupled to the housing and having an oil cavity side and an air cavity side, the bearing plate formed of aluminum; anda pair of sleeves received by the bearing plate and that support respective bearings rotatably supporting the respective first and second axle shafts, wherein the pair of sleeves are formed of steel.2. The supercharger of wherein the bearings are press-fit into the sleeves.3. The supercharger of wherein outer races of the bearings are formed of steel whereby thermal expansion and contraction properties are similar to the sleeves such that the press-fit is maintained throughout thermal expansion and contraction events.4. The supercharger of wherein the sleeves each have a raised lip formed around an inner diameter thereof claim 3 , wherein the raised lips provide an axial barrier from the respective bearings.5. The supercharger of wherein the bearing plate further comprises a pair of seal pockets claim 1 , each seal pocket configured to receive a seal.6. The supercharger of wherein the sleeves are cast into the bearing plate ...

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Номер записи: 70
08-04-2021 дата публикации

VACUUM PUMP, SCROLL PUMP, AND MANUFACTURING METHOD FOR SUCH

Номер: US20210102536A1
Автор: BECKER Jonas, BERNHARDT Gernot, HARAPAT Erhard, HOFMANN Jan, KALLENBORN Stefan, PAULI Lars, SCHAEFER Heiko, Soehngen Wolfgang, WANGORSCH Verena, WILLIG Michael
Принадлежит:

The invention relates to a scroll pump comprising a pressure sensor integrated into the scroll pump. 1. A scroll pump , which is a vacuum pump , comprising a pressure sensor integrated into the scroll pump.2. A scroll pump in accordance with claim 1 , wherein the pressure sensor is integrated into a control of the scroll pump and/or of a vacuum system.3. A scroll pump in accordance with claim 1 , wherein the pressure sensor is provided for measuring a suction pressure of the scroll pump or a pressure between two pump-active spiral walls.4. A scroll pump in accordance with claim 1 , wherein the pressure sensor is screwed into a component of the scroll pump.5. A scroll pump in accordance with claim 1 , wherein the pressure sensor is arranged in a cooling air flow of a cooling device of the scroll pump.6. A vacuum pump claim 1 , in particular a scroll pump claim 1 , comprising:a fan controllable in its rotational speed for cooling the vacuum pump;a temperature sensor; anda control device that is configured to regulate the rotational speed of the fan in dependence on a power consumption of a drive of the vacuum pump and on a temperature measured by the temperature sensor.7. A vacuum pump in accordance with claim 6 , wherein the regulation takes place in dependence on a temperature of a motor claim 6 , of a motor winding claim 6 , of drive electronics claim 6 , of a pump body claim 6 , and/or of a housing of the vacuum pump claim 6 , measured by the temperature sensor.8. A vacuum pump in accordance with claim 6 , wherein a first threshold value of the temperature is defined claim 6 , and wherein the regulation only takes place at a measured temperature above the first threshold value claim 6 , and/or wherein the rotational speed of the fan is kept constant at zero or at a minimum rotational speed below the first threshold value.9. A vacuum pump in accordance with claim 6 , wherein a second threshold value of the temperature is defined claim 6 , and wherein the rotational ...

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Номер записи: 71
02-06-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220170461A1
Автор: Imai Tetsuya, INABA Hironobu, SATO Taizo
Принадлежит: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

[Problem] A scroll compressor is provided which has improved workability when a back pressure chamber and a compression chamber are communicated with each other. 1. A scroll compressor which has a compression mechanism including a fixed scroll and a movable scroll respectively formed at surfaces of mirror plates with spiral laps facing each other , and in which the movable scroll is revolved and turned with respect to the fixed scroll to thereby compress a working fluid in a compression chamber formed between the laps of both scrolls , comprising:a back pressure chamber formed in a back surface of the mirror plate of the movable scroll; anda communication hole formed in the mirror plate of the movable scroll and communicating the back pressure chamber and the compression chamber with each other,wherein the communication hole is constituted of a large-diameter hole section located on the back pressure chamber side of the mirror plate of the movable scroll and a small-diameter hole section continuously extending from the large-diameter hole section to the compression chamber.2. The scroll compressor according to claim 1 , wherein the length dimension of the small-diameter hole section is smaller than the length dimension of the large-diameter hole section.3. A scroll compressor which has a compression mechanism including a fixed scroll and a movable scroll respectively formed at surfaces of mirror plates with spiral laps facing each other claim 1 , and in which the movable scroll is revolved and turned with respect to the fixed scroll to thereby compress a working fluid in a compression chamber formed between the laps of both scrolls claim 1 , comprising:a back pressure chamber formed in a back surface of the mirror plate of the movable scroll;a mounting hole formed in the mirror plate of the movable scroll and extending from the back pressure chamber to the compression chamber; anda communication member installed in the mountingwherein the communication member has a ...

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Номер записи: 72
02-06-2022 дата публикации

LIQUID COOLING OF A SCROLL TYPE COMPRESSOR WITH LIQUID SUPPLY THROUGH THE CRANKSHAFT

Номер: US20220170462A1
Автор: Nicholas Nathan D., Shaffer Bryce R., Wilson John P.D.
Принадлежит:

Scroll devices with cooling fluid supplied through a crankshaft are provided. The device may comprise an orbiting scroll operably connected to a fixed scroll and a crankshaft operably connected to the orbiting scroll. A first seal may be positioned about an outer surface of the crankshaft to form a seal with the outer surface. A second seal may be positioned about an outer surface of the crankshaft to form a seal with the outer surface. A first channel and a second channel extend through the crankshaft and are in fluid communication with the orbiting scroll and a fluid source and a fluid reservoir. 1. A scroll device comprising:an orbiting scroll operably connected to a fixed scroll;a crankshaft operably connected to the orbiting scroll, wherein the crankshaft extends along a longitudinal axis between a first end and a second end;a first seal positioned about an outer surface of the crankshaft to form a seal with the outer surface;a second seal positioned about an outer surface of the crankshaft to form a seal with the outer surface, wherein a first volume is at least partially defined by the first seal, and wherein a second volume is defined between the first seal and the second seal;a first channel extending through the crankshaft from the first end to the second end, the first channel comprising an opening in fluid communication with the first volume; anda second channel extending through the crankshaft from the first end to the second end, the second channel comprising an opening in fluid communication with the second volume.2. The scroll device of claim 1 , further comprising one or more idler shafts through which a cooling fluid can be transported to or from the orbiting scroll and at least one of the first channel and the second channel.3. The scroll device of claim 1 , further comprising one or more flexible conduits to transport a cooling fluid to or from the orbiting scroll and at least one of the first channel and the second channel.4. The scroll device ...

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Номер записи: 73
02-06-2022 дата публикации

FLUID COMPRESSOR

Номер: US20220170463A1
Автор: Cho Chong Du
Принадлежит:

The present invention relates to a fluid compressor comprising: a driving module comprising a driving motor embedded in a motor case; and a compression module comprising a rotor, which is rotatably driven by a driving motor and which has a plurality of variable blades radially provided along the outer peripheral surface thereof, a rotor housing for encompassing the rotor, and a cover of the rotor, for closing the rotor housing, wherein the compression modules are stacked and airtight to block contact between fluid passing through the compression module and air outside the compression module, so that the fluid flowing into any one compression module sequentially passes through the remaining compression modules. The rotary shafts provided in each center of the rotors are connected a shaft coupler. The present invention simultaneously achieves a high-efficiency compression ratio and reduces noise caused by the excessive velocity of any compression module. 1. A fluid compressor comprising:a driving module comprising a driving motor and a motor case in which the driving motor is embedded; anda compression module comprising a rotor, which is rotatably driven by means of the driving motor and which has a plurality of variable blades radially provided along the outer peripheral surface thereof, a rotor housing for encompassing the rotor, and a cover of the rotor, for closing the rotor housing,wherein the compression modules are assembled in a form in which two or more compression modules are stacked, the respective compression modules airtightly come in close contact with each other so as to block contact between a fluid passing through the compression module and air outside the compression module, so that the fluid flowing into any one compression module sequentially passes through the remaining compression modules, all the compression modules are driven by means of one driving motor, and rotary shafts provided in each center of the rotors inside the respective compression ...

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Номер записи: 74
02-06-2022 дата публикации

Waste-Heat Recovery System in Oil-Cooled Gas Compressor

Номер: US20220170666A1
Автор: Takano Masahiko, Yamamoto Kentaro
Принадлежит:

A waste-heat recovery system includes a waste-heat-recovery heat a tank, a circulation circuit, a circulation pump, and a control device that is configured to obtain the temperature of the heat medium flowing through a heat medium outlet piping of the circulation circuit and the temperature of the water stored in the tank. The control device stops the circulation pump or reduces the rotational frequency thereof in a case where the temperature of the heat medium flowing through the heat medium outlet piping is lower, or lower by a predetermined temperature or more, than the temperature of the water. 125-. (canceled)26. A waste-heat recovery system comprising:a waste-heat-recovery heat exchanger configured to recover heat from a compressed gas by connecting to a gas piping that sends the compressed gas delivered from the compressor main body to customers;a tank that stores water that exchanges heat with heat medium exchanged heat with the compressed gas in the waste-heat-recovery heat exchanger;a circulation circuit that connects to the waste-heat-recovery heat exchanger and the tank, and in which the heat medium circulates;a circulation pump installed in the circulation circuit; and 'the control device stops the circulation pump or reduces the rotational frequency thereof in a case where the temperature of the heat medium flowing through the heat medium outlet piping is lower, or lower by a predetermined temperature or more, than the temperature of the water.', 'a control device that is configured to obtain the temperature of the heat medium flowing through a heat medium outlet piping of the circulation circuit and the temperature of the water stored in the tank, wherein'}27. The waste-heat recovery system according to claim 26 , further comprising:a unit configured to store the waste-heat-recovery heat exchanger; anda tank unit configured to store the tank.28. A waste-heat recovery system comprising:a waste-heat-recovery heat exchanger configured to recover heat ...

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Номер записи: 75
19-04-2018 дата публикации

COMPRESSOR WITH LIQUID INJECTION COOLING

Номер: US20180106255A1
Автор: "OHANLEY HARRISON", NELSON ANDREW, PITTS JEREMY, SANTEN JOHANNES, SANTOS PEDRO, WALTON JOHN, WESTWOOD MITCHELL
Принадлежит:

A positive displacement rotary compressor is designed for near isothermal compression, high pressure ratios, high revolutions per minute, high efficiency, mixed gas/liquid compression, a low temperature increase, a low outlet temperature, and/or a high outlet pressure. Liquid injectors provide cooling liquid that cools the working fluid and improves the efficiency of the compressor. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. 2. The method of claim 1 , wherein the cooling liquid comprises a liquid hydrocarbon.3. The method of claim 1 , further comprising claim 1 , after expelling the liquid out of the outlet port claim 1 , recirculating at least a portion of the expelled liquid back into the rotor casing via the at least one liquid injector.4. The method of claim 3 , wherein the recirculating occurs without the use of a pump.5. The method of claim 3 , further comprising using a pump to recirculate the expelled liquid back into the rotor casing via the at least one liquid injector.6. The method of claim 1 , wherein the at least one liquid injector is positioned to inject liquid into an area within the rotor casing volume where compression occurs during operation of the compressor.7. The method of claim 1 , wherein the injecting occurs during the compressor's highest rate of compression in terms of volume change per time.8. The method of claim 1 , wherein the injecting occurs during the compressor's highest rate of compression in terms of volume change per degree of rotation of the rotor.9. The method of claim 1 , wherein injected cooling liquid is atomized when injected claim 1 , absorbs heat claim 1 , and is directed toward the outlet port.10. The method of claim 1 , wherein the compressor further comprises a gate having a first end and a second end claim 1 , wherein the gate is operable to move within the rotor casing to locate the first end proximate to the rotor as the rotor turns claim 1 , and ...

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Номер записи: 76
30-04-2015 дата публикации

SPINDLE COMPRESSOR

Номер: US20150118093A1
Автор: Steffens Ralf
Принадлежит:

A spindle rotor pair of a spindle compressor has a two-toothed spindle rotor and a three-toothed spindle rotor meshing the other without contact. The wrap angle related to the two-toothed spindle rotor is at least 800 angular degrees. A range of at least 30 m/sec is achieved as the mean circumferential speed of the rotor head. In the transverse section, both spindle rotors have arc sectors and cycloid profile contour flanks. In the case of the two-toothed spindle rotor, they are primarily above its gear-tooth pitch circle and of convex design, however, in the case of the three-toothed spindle rotor, they are below its ear-tooth pitch circle and of concave, i.e., hollow, design. Preferably, the transverse sections of each spindle rotor are symmetrical in a way that in each transverse section, the centre of gravity of the profile surfaces comes to lie on the respective rotor pivot point. 123-. (canceled)24. A spindle compressor operating in a working chamber without operating fluid medium as a two-shaft rotary displacement machine to convey and compress gaseous media for vacuum pressure and positive pressure applications , the spindle compressor comprises a spindle rotor pair driven true to the rotational angle and counter-rotating with an external synchronization arrangement outside the compressor's working chamber in a surrounding compressor housing with an inlet and a discharge outlet for the conveying medium , wherein the two spindle rotors are designed with a different number of teeth: one two-toothed spindle rotor and one three-toothed spindle rotor meshing the other without contact , with a wrap angle related to the two-toothed spindle rotor of at least 800 angular degrees , whereby the spindle rotors rotate at high speed such that a range of at least 30 msec is reached as the rotor head's mean circumferential speed , that both spindle rotors in the transverse section are provided with arc sectors and with cycloid profile contour flanks which in the two-toothed ...

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Номер записи: 77
26-04-2018 дата публикации

MOTOR DRIVEN COOLED COMPRESSOR SYSTEM

Номер: US20180111676A1
Автор: Pal Debabrata
Принадлежит:

A cooled compressor system is provided including: a compressor that in operation compresses air; an electric motor that in operation drives the compressor, the electric motor having a back iron, a motor stator radially inward from the back iron, and a motor rotor radially inward from the motor stator; an airflow system fluidly connected to the compressor, the airflow system in operation directs air through the back iron and in between the motor stator and motor rotor; an airflow inlet that in operation allows an inflow of air to the airflow system; and an airflow outlet that in operation allows an outflow of air from the airflow system; wherein the air travels from the airflow inlet to the airflow outlet through the compressor and the airflow system. 1. A cooled compressor system comprising:a compressor that in operation compresses air;an electric motor that in operation drives the compressor, the electric motor having a back iron, a motor stator radially inward from the back iron, and a motor rotor radially inward from the motor stator;an airflow system fluidly connected to the compressor, the airflow system in operation directs air through the back iron and in between the motor stator and motor rotor;an airflow inlet that in operation allows an inflow of air to the airflow system; andan airflow outlet that in operation allows an outflow of air from the airflow system;wherein the air travels from the airflow inlet to the airflow outlet through the compressor and the airflow system.2. The cooled compressor system of claim 1 , wherein:the airflow system is fluidly connected to the airflow inlet through the compressor.3. The cooled compressor system of claim 2 , wherein:the compressor further includes a compressor inlet fluidly connected to the airflow inlet and a compressor outlet fluidly connected to the airflow system.4. The cooled compressor system of claim 1 , wherein:the airflow system is fluidly connected to the airflow outlet through the compressor.5. The ...

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Номер записи: 78
26-04-2018 дата публикации

SCREW COMPRESSOR, COMPRESSOR ELEMENT AND GEARBOX APPLIED THEREBY

Номер: US20180112664A1
Автор: De Bock Simon Peter G., Nachtergaele Johan
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

A screw compressor comprising a compressor element with a housing in which two helical rotors are mounted on bearings by their shafts, and a gearbox—with a housing with a mounting surface that is built onto a mounting surface of the housing of the compressor element, and which is coupled in a torque-transmitting way to a shaft of at least one of the aforementioned rotors, whereby the compressor element is provided with an oil circuit with an input and an output for oil and a cooling jacket with an input and output for a coolant, wherein the aforementioned inputs and outputs for the oil and for the coolant are located in the aforementioned mounting surface of the housing of the compressor element, whereby these inputs and outputs connect to channels for the respective supply and removal of the oil and the coolant. 122-. (canceled)23. A screw compressor comprising a compressor element with a housing in which two helical rotors are mounted on bearings by their shafts , and a gearbox with a housing with a mounting surface that is built onto a mounting surface of the housing of the compressor element , and which is coupled in a torque-transmitting way to a shaft of at least one of the aforementioned rotors , whereby the compressor element is provided with an oil circuit with an input and an output for oil and a cooling jacket with an input and output for a coolant , wherein the aforementioned inputs and outputs for the oil and for the coolant are located in the aforementioned mounting surface of the housing of the compressor element , whereby these inputs and outputs are configured to connect to channels for the respective supply and removal of the oil and the coolant that are at least partially integrated internally in the gearbox.24. The screw compressor according to claim 23 , wherein the aforementioned mounting surfaces surround the shaft ends of the rotors at the side of the gearbox.25. The screw compressor according to claim 23 , wherein the shaft ends of the ...

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Номер записи: 79
09-06-2022 дата публикации

DIAPHRAGM PUMP WITH HEAT DISSIPATION MECHANISM

Номер: US20220178374A1
Автор: CHEN SHOU JEN
Принадлежит:

A diaphragm pump with a heat dissipation mechanism includes a seat body, a diaphragm assembly, and a rotor pump assembly. The seat body includes a rotating member therein. The diaphragm assembly includes a piston mechanism and a diaphragm mechanism. The diaphragm assembly and the seat body confine a first pump room in which a medium is received. The rotor pump assembly is disposed between the rotating member and the diaphragm assembly. The rotor pump assembly includes a casing. The casing includes a suction port communicated with the first pump room and a discharge port communicated with the at least one medium outlet. The rotor pump assembly includes an outer rotor rotatably connected with the casing and an inner rotor rotatably connected with the outer rotor. The inner rotor is rotatably connected with the drive shaft. The outer rotor and the inner rotor rotate at different speeds. 1. A diaphragm pump with a heat dissipation mechanism comprising:a seat body including a rotatable drive shaft inserting therethrough and a rotating member therein connected with the drive shaft, wherein the rotating member rotates upon rotation of the drive shaft;a diaphragm assembly including at least one piston mechanism connected with the rotating member and moving reciprocally upon rotation of the rotating member and at least one diaphragm mechanism connected with the at least one piston mechanism and moving reciprocally upon reciprocation of the at least one piston mechanism, wherein the diaphragm assembly and the seat body are connected together and confine a first pump room in which a medium for the diaphragm assembly is received, and wherein the diaphragm assembly includes at least one medium outlet communicated with the first pump room;a housing with inlet and outlet channels communicated with a space in which the at least one diaphragm mechanism is disposed and including a check valve disposed therein;a front cover connected with the housing with inlet and outlet channels, ...

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Номер записи: 80
18-04-2019 дата публикации

MODULAR HEAT EXCHANGER, MOISTURE SEPARATOR AND PULSATION DAMPENER FOR A MULTI-STAGE FLUID COMPRESSOR

Номер: US20190111359A1
Автор: GOHEL HARDIK VINODBHAI, GUPTA VISHAL UMASHANKER, KUMAR.K.R MAHESH, PRABHU P., VAGHANI SHAMBHU M.
Принадлежит:

An aspect of the present disclosure includes a multi-stage compressor having a low pressure compressor stage and a high pressure compressor stage operable for compressing a working fluid. An integrated device including a heat exchanger directly connected to a combination unit is operable for reducing pressure pulsations, cooling and separating moisture in a first compressed flow stream and a second compressed flow stream discharged from the low pressure stage and the high pressure stage respectively. A first pressure pulsation dampener, a first moisture separator, a second pressure pulsation dampener and a second moisture separator are integrally formed within the combination unit. 1. A system comprising:a multi-stage compressor having a low pressure compressor stage and a high pressure compressor stage operable for compressing a working fluid;an integrated device including a heat exchanger directly connected to a combination unit;a first pressure pulsation dampener and a first moisture separator integrally formed within the combination unit, wherein the first pressure pulsation dampener and the first moisture separator are in fluid communication with a low pressure compressed working fluid discharged from the low pressure compressor stage; anda second pressure pulsation dampener and a second moisture separator integrally formed within the combination unit, wherein the second pressure pulsation dampener and the second moisture separator are in fluid communication with a high pressure compressed working fluid discharged from the high pressure compressor stage.2. The system of claim 1 , wherein the combination unit is formed as a single one-piece housing with an internal bore.3. The system of further comprising first and second partition walls extending across the internal bore claim 2 , the first and second partition walls intersecting one another within the internal bore.4. The system of claim 3 , wherein the first and second partition walls cooperate to define a ...

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Номер записи: 81
18-04-2019 дата публикации

VACUUM PUMP HAVING A SILENCER

Номер: US20190113036A1
Автор: Birch Peter, Cornely Otmar, Kolvenbach Dieter
Принадлежит:

A vacuum pump comprises rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing. 1. A vacuum pump , in particular a two-shaft vacuum pump , comprisinga pump housing defining a suction chamber and having a gas inlet and a gas outlet,rotor elements arranged in said suction chamber for forming a plurality of successive pump stages,an inlet duct for gas ballast connected to one of said pump stages, andat least one sound expansion space arranged between duct sections of said inlet duct and integrated into said pump housing.2. A vacuum pump , in particular a two-shaft vacuum pump , comprisinga pump housing defining a suction chamber and having a gas inlet and a gas outlet,rotor elements arranged in said suction chamber for forming a plurality of successive pump stages,a discharge duct connected to said gas outlet, andat least one sound expansion space arranged between duct sections of said discharge duct and integrated into said pump housing.3. The vacuum pump according to claim 1 , further comprisinga discharge duct connected to the gas outlet, andthe at least one sound expansion space arranged between duct sections of said discharge duct and integrated into the pump housing.4. The vacuum pump according to claim 1 , wherein the at least one sound expansion space is arranged in a housing cover and/or a housing wall.5. The vacuum pump according to claim 1 , wherein at an inlet opening of the sound expansion space a multiple increase of the cross-section is realized.6. The vacuum pump according to claim 1 , wherein two identically configured sound expansion spaces ...

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Номер записи: 82
18-04-2019 дата публикации

Waste-Heat Recovery System in Oil-Cooled Gas Compressor

Номер: US20190113251A9
Автор: Takano Masahiko, Yamamoto Kentaro
Принадлежит:

The purpose of the present invention is: to enable hot water at a required temperature to be supplied, even in cases when compressor load factor is low; to suppress heat dissipation from a waste-heat recovery device; and to improve waste-heat recovery rate. A waste-heat recovery system in an oil-cooled gas compressor is provided with: a compressor main body (); an oil separator (); gas piping () which supplies, to a demanded destination compressed gas separated from oil by the oil separator; oil piping () which returns, to the compressor main body, the oil separated by the oil separator; and a waste-heat-recovery heat exchanger () which recovers heat from the compressed gas and/or the oil. The waste-heat recovery system is also provided with: a hot-water storage tank (); circulation circuits () in which a heat medium is made to circulate between the waste-heat recovery heat exchanger and the hot-water storage tank; a circulation pump () provided to these circulation circuits; and a control device () which, in cases when the temperature of the oil or the compressed gas subjected to heat exchange in the waste-heat-recovery heat exchanger is equal to or less than the temperature of the hot water in the hot-water storage tank, stops the circulation pump or reduces the rotational frequency of the circulation pump. 1. A waste-heat recovery system in an oil-cooled gas compressor including a compressor main body , an oil separator for separating oil from compressed gas delivered from the compressor main body , a gas piping for sending the compressed gas separated from the oil by the oil separator to a demanded destination , an oil piping for returning the oil separated by the oil separator to the compressor main body , and a waste-heat-recovery heat exchanger for recovering heat from at least either of the compressed gas flowing through the gas piping or the oil flowing through the oil piping , the waste-heat recovery system in the oil-cooled gas compressor comprising:a ...

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Номер записи: 83
18-04-2019 дата публикации

CONTROLLER FOR COMPRESSOR

Номер: US20190113263A1
Автор: COOLS Pieter Michel Mena, KRISHNASING Yogesh Avinash
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

The present invention is directed to a controller for a compressor, more specifically for a first electrical VSD motor configured to drive a compressor element, said controller comprising a housing in which is provided a rectifier, a DC link with a DC bus and two inverters connected to the same DC bus, a first inverter configured to control the first VSD motor driving said compressor element, and a second inverter configured to control a second VSD motor driving a fan configured to cool the compressor. 112.-. (canceled)13. A compressor comprising a controller connected to a first VSD motor for driving a compressor element of said compressor wherein the controller is further connected to a second VSD motor for driving a cooling fan configured to cool said compressor , said controller comprising a housing in which is provided a rectifier , a DC link with a DC bus and two inverters connected to the same DC bus , a first inverter configured to control the first VSD motor driving said compressor element , and a second inverter configured to control the second VSD motor driving the fan.14. The compressor according to claim 13 , wherein said compressor does not have a relay cabinet.15. The compressor according to claim 13 , wherein each of said inverters comprises at least one IGBT which is connected to said DC bus.16. The compressor according to claim 13 , wherein the controller further comprises a separate cooling fan for cooling said the power electronics of said controller.17. The compressor according to claim 13 , wherein the controller further comprises a first current sensor for sensing the current going through a winding of the first VSD motor.18. The compressor according to claim 13 , wherein the controller further comprises a voltage sensor for sensing the value of the voltage at the level of the first VSD motor and/or of the second VSD motor.19. The compressor according to claim 13 , wherein the controller further comprises a communication module adapted to ...

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Номер записи: 84
13-05-2021 дата публикации

Rotating heating chamber apparatus and method of use thereof

Номер: US20210140317A1
Автор: Merton W. Pekrul
Принадлежит: Individual

The invention comprises a method for heating a fluid in an engine, including: a rotor rotating relative to a stator about a shaft and a set of vanes extending radially outward, relative to an elongated axis of the shaft, between the rotator and the stator, the set of vanes separating a set of expansion chambers, where the method comprises the steps of: (1) applying a shear force to the fluid to form a gas with a rotatable chamber within the shaft of the engine; and (2) exhausting the gas from the shaft to a rotor-vane chamber, the rotor-vane chamber comprising a void in a vane slot on a shaft side of a first vane, of the set of vanes. Optionally, the gas applies a rotation force by passing the gas from the first vane to a trailing expansion chamber of the set of expansion chambers.

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Номер записи: 85
13-05-2021 дата публикации

MULTI-STAGE ROTARY PISTON PUMP

Номер: US20210140430A1
Автор: Dreifert Thomas, Muller Roland
Принадлежит:

A multi-stage rotary piston pump comprising two shafts in a housing, which support multiple rotary pistons. Corresponding rotary pistons form a respective rotary piston pair, wherein multiple rotary piston pairs are provided which form a respective pump stage. Neighboring pump stages are each connected to one another via connection channels. The multi-stage rotary piston pump also comprises a pump inlet that is connected to the first pump stage, as well as a pump outlet that is connected to the last pump stage. The built-in volume ratio is at least 15, so that high pumping capacities of at least 1500 m/h can be achieved. 1. A multi-stage rotary piston pump comprising two shafts arranged in a housing and supporting a plurality of rotary pistons ,wherein corresponding rotary pistons make up a rotary piston pair, and a plurality of rotary piston pairs each constituting a pump stage are provided,a plurality of connection channels each connecting neighboring pump stages to each other,a pump inlet connected to the first pump stage, anda pump outlet connected to the last pump stage,whereinthe built-in volume ratio is at least 15.2. The multi-stage rotary piston pump according to claim 1 , wherein the number of stages is at least three.3. The multi-stage rotary piston pump according to claim 2 , the following applies to the number of steps: n>√{square root over (VR)}−1 .4. The multi-stage rotary piston pump according to claim 1 , wherein claim 1 , for avoiding an overcompression claim 1 , at least one of the pump stages is connected to a relief channel where a relief valve is arranged.5. The multi-stage rotary piston pump according to claim 1 , wherein at least the second and the third pump stages are connected to a relief valve.6. The multi-stage rotary piston pump according to claim 4 , wherein the relief channels are connected to the environment and/or the pump outlet.7. The multi-stage rotary piston pump according to claim 1 , wherein the pressure difference of ...

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Номер записи: 86
03-05-2018 дата публикации

Two-stage oil-injected screw air compressor

Номер: US20180119601A1
Автор: Sheng-kun Chen, Viktor Weber, Yin-Ching LIN, Yu-Feng Wu
Принадлежит: ALMIG KOMPRESSOREN GmbH, Fusheng Industrial (Shanghai) Co Ltd

A two-stage oil-injected screw air compressor includes an integrated compression casing, and the integrated compression casing further includes a first stage compression chamber, an intermediate cooling channel, and a second stage compression chamber parallel stacked in the integrated compression casing. A straightforward oil injector aims at the intermediate cooling channel to spray lubricating oil into the intermediate cooling channel.

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Номер записи: 87
25-08-2022 дата публикации

Cooled dry vacuum screw pump

Номер: US20220268279A1
Автор: Christopher White, Khurram Akhtar
Принадлежит: Fruvac Ltd

The present invention relates to rotary screw positive displacement machines used as a vacuum pump wherein additional intake air is provided allowing cooling to the invention which permits extended operation at extreme vacuum pressure. The rotary screw nature of the vacuum pump allows operation without additional lubrication with the additional intake air ensuring that thermal expansion will not disrupt the tight tolerances of the invention. The invention allows simultaneous operation as a vacuum pump and air compressor.

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Номер записи: 88
25-04-2019 дата публикации

SCREW COMPRESSOR

Номер: US20190120232A1
Автор: UENO Hiromichi
Принадлежит: DAIKIN INDUSTRIES, LTD.

A screw compressor includes a casing, a screw rotor, a discharge passage, and at least one muffler space. The casing includes a cylindrically-shaped cylinder, a main body surrounding a vicinity of the cylinder, and a high-pressure fluid passage provided between the main body and the cylinder. The screw rotor includes a plurality of helical grooves. The screw rotor is inserted into the cylinder to define fluid chambers. A fluid is sucked into the fluid chambers to compress the fluid. The discharge passage is disposed in the casing. The discharge passage guides the fluid that has been discharged from the fluid chambers to the high-pressure fluid passage. The at least one muffler space is disposed in the casing. The at least one muffler space communicates with the discharge passage so as to reduce a pressure fluctuation of the fluid flowing from the discharge passage to the high-pressure fluid passage. 1. A screw compressor , comprising:a casing including a cylindrically-shaped cylinder, a main body surrounding a vicinity of the cylinder, and a high-pressure fluid passage provided between the main body and the cylinder; anda screw rotor including a plurality of helical grooves, the screw rotor being inserted into the cylinder to define fluid chambers, and a fluid being sucked into the fluid chambers to compress the fluid in the screw compressor;a discharge passage disposed in the casing, the discharge passage guiding the fluid that has been discharged from the fluid chambers to the high-pressure fluid passage; andat least one muffler space disposed in the casing, the at least one muffler space communicating with the discharge passage so as to reduce a pressure fluctuation of the fluid flowing from the discharge passage to the high-pressure fluid passage.2. The screw compressor of claim 1 , further comprisinga plurality of gate rotors meshing with the respective plurality of helical grooves of the screw rotor,the discharge passage including a plurality of discharge ...

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Номер записи: 89
16-04-2020 дата публикации

COMPRESSOR

Номер: US20200116149A1
Автор: KIM Cheolhwan, LEE Seungmock
Принадлежит:

A compressor includes: a case including a discharge part configured to discharge refrigerant and defining a reservoir space configured to store oil; a drive unit including a stator and a rotor; a rotary shaft coupled to the rotor; a compression unit coupled to the rotary shaft and lubricated with oil, the compression unit being configured to compress refrigerant and discharge compressed refrigerant in a direction away from the discharge part; a muffler coupled to the compression unit and configured to guide refrigerant to the discharge part; a separator coupled to at least one of the rotor or the rotary shaft and configured to separate oil from refrigerant guided to the discharge part; and a coupling unit that fixes the separator to the at least one of the rotor or the rotary shaft. 1. A compressor comprising:a case that comprises a discharge part disposed at one side of the case to discharge refrigerant, and a reservoir space configured to store oil;a drive unit comprising (i) a stator coupled to an inner circumferential surface of the case and configured to generate a rotary magnetic field and (ii) a rotor disposed inside the stator and configured to rotate relative to the stator by the rotary magnetic field;a rotary shaft coupled to the rotor;a compression unit coupled to the rotary shaft and lubricated with oil, the compression unit being configured to compress refrigerant and discharge compressed refrigerant in a direction away from the discharge part;a muffler coupled to the compression unit and configured to guide refrigerant to the discharge part;a separator coupled to at least one of the rotor or the rotary shaft and configured to separate oil from refrigerant guided to the discharge part; anda coupling unit that fixes the separator to the at least one of the rotor or the rotary shaft.2. The compressor according to claim 1 , wherein the separator comprises:a coupling body coupled to the at least one of the rotor or the rotary shaft; anda separation body ...

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Номер записи: 90
14-05-2015 дата публикации

ROOTS-STYLE BLOWER WITH LEAKAGE MECHANISMS

Номер: US20150132171A1
Автор: Brunberg Johan, BURENIUS Ragnar, KNUTSSON Magnus, OHLSON Anders, Toma Amir
Принадлежит:

The disclosure concerns a Roots-type blower comprising a housing defining first and second transversely overlapping cylindrical chambers and at least one inlet port and an outlet port; first and second meshed, lobed rotors, each lobe having a top land sealingly cooperating with the cylindrical chambers; a plurality of control volumes for transfer of fluid, each control volume being defined by a pair of adjacent lobes on one of the rotors, and at least one of the cylindrical chambers; and blowholes formed within the cylindrical chambers in connection with meshing of the lobes of the first and second rotors. The blower further comprises at least one backflow slot extending through the housing wall of each cylindrical chamber for effecting a leakage of fluid from downstream the at least one outlet port into a control volume. 1. A Roots-type blower comprising:a housing defining first and second transversely overlapping cylindrical chambers, the housing comprising a first end wall and a second end wall, and the housing defining at least one inlet port adjacent the first end wall and at least one outlet port adjacent the second end wall;first and second meshed, lobed rotors disposed, respectively, in the first and second cylindrical chambers, each rotor including a plurality of lobes, each lobe having first and second axially facing end surfaces sealingly cooperating with the first and second end walls, respectively, and a top land sealingly cooperating with a respective cylindrical chamber, each lobe having its first and second axially facing end surfaces defining a twist angle of at least 90°, and each lobe defining a helix angle;a plurality of control volumes for transfer of fluid from the at least one inlet port to the at least one outlet port, each control volume being defined by a pair of adjacent lobes on one of the rotors, and at least one of the cylindrical chambers, the first end wall, and/or the second end wall;a leakage mechanism for effecting a leakage of ...

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Номер записи: 91
27-05-2021 дата публикации

COMPRESSOR

Номер: US20210156381A1
Автор: Fukuda Akinori, Funakosi Daisuke, NOBA Keisuke, OKA Hideto, WATANABE Kenji
Принадлежит:

A compressor includes fixed scroll () and revolving scroll () configuring compression mechanism (), compression chamber (), intake chamber (), discharge port (), muffler (), and heat-insulating member () provided between fixed scroll () and muffler (). After a refrigerant gas taken into intake chamber () is compressed by revolving scroll () revolving and compression chamber () moving while changing a volume of compression chamber (), the refrigerant gas is discharged from discharge port (). The refrigerant gas discharged from discharge port () is discharged into muffler space () formed by muffler (). Heat-insulating member () includes heat-insulating member discharge port (), lead valve (), and recess (). 1. A compressor comprising:a fixed scroll and a revolving scroll configuring a compression mechanism;a compression chamber formed between the fixed scroll and the revolving scroll;an intake chamber provided on an outer circumferential side of the fixed scroll;a discharge port provided in a central part of the fixed scroll;a muffler provided to cover the discharge port at an upper part of the fixed scroll; anda heat-insulating member provided between the fixed scroll and the muffler,wherein after a refrigerant gas taken into the intake chamber is compressed by the revolving scroll revolving and the compression chamber moving while changing a volume of the compressor, the refrigerant gas is discharged from the discharge port,the refrigerant gas discharged from the discharge port is discharged into a muffler space formed by the muffler, and a heat-insulating member discharge port provided in a portion facing the discharge port,', 'a lead valve provided on a surface, of the heat-insulating member, on a side opposite to a side facing the fixed scroll, and', 'a recess provided on the surface, of the heat-insulating member, facing the fixed scroll and provided in a 360-degree area in a circumferential direction facing the intake chamber., 'the heat-insulating member ...

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Номер записи: 92
12-05-2016 дата публикации

COMPRESSOR WITH LIQUID INJECTION COOLING

Номер: US20160131138A1
Автор: "OHANLEY HARRISON", NELSON ANDREW, PITTS JEREMY, SANTEN JOHANNES, SANTOS PEDRO, WALTON JOHN, WESTWOOD MITCHELL
Принадлежит:

A positive displacement rotary compressor is designed for near isothermal compression, high pressure ratios, high revolutions per minute, high efficiency, mixed gas/liquid compression, a low temperature increase, a low outlet temperature, and/or a high outlet pressure. Liquid injectors provide cooling liquid that cools the working fluid and improves the efficiency of the compressor. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. 1. A method of operating a compressor having a casing defining a compression chamber , an inlet port into the compression chamber , and a rotatable drive shaft configured to drive the compressor , the method comprising:moving a working fluid into the compression chamber through the inlet port, wherein the working fluid is a multi-phase fluid that includes gas and liquid components and has a liquid volume fraction at the inlet port of at least 0.5%; andcompressing the working fluid using the compressor such thata single stage pressure ratio of the compressor is at least 3:1.2. The method of claim 1 , wherein the compressor comprises a positive displacement rotary compressor that includes a rotor connected to the drive shaft for rotation with the drive shaft relative to the casing.3. The method of claim 2 , wherein:the method further comprises, after said compressing, expelling compressed working fluid out of the compression chamber through an outlet port in the compression chamber; andthe pressure ratio comprises a ratio of (a) an absolute inlet pressure of the working fluid at the inlet port, to (b) an absolute outlet pressure of the working fluid expelled from the compression chamber through the outlet port.45-. (canceled)6. The method of claim 2 , wherein said pressure ratio is between 5:1 and 100:1.7. The method of claim 6 , wherein said pressure ratio is at least 10:1.8. The method of claim 6 , wherein said pressure ratio is at least 15:1.9. The method of claim 1 , ...

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Номер записи: 93
12-05-2016 дата публикации

SOUND CONTROL FOR A HEATING, VENTILATION, AND AIR CONDITIONING UNIT

Номер: US20160131139A1
Автор: Garvin Timothy G., Mehta Pavak, Rockwood William B.
Принадлежит:

Systems and methods to isolate a vibration source (e.g., a compressor) externally are disclosed. The embodiments generally include preventing/reducing vibration and/or pulsation transmission from the vibration source by one or more functional/structural isolating members, and preventing/reducing sound radiated from the vibration source by one or more sound enclosures. 1. An external isolation system for a vibration source , comprising:a sound enclosure configured to surround the vibration source so as to reduce sound radiated from the vibration source;a structural isolating member configured to support the vibration source and passively damp vibrations and/or pulsations; anda functional isolating member configured to maintain a functional connection with the vibration source.2. The external isolation system of claim 1 , wherein the functional isolating member includes a muffler equipped to a working fluid port of the vibration source.3. The external isolation system of claim 1 , wherein the functional isolating member includes an isolating conduit equipped to a working fluid port of the vibration source claim 1 , and the isolating conduit is configured to allow a working fluid to pass through.4. The external isolation system of claim 2 , wherein the working fluid port includes a discharge port of the vibration source or a suction port of the vibration source.5. The external isolation system of claim 1 , wherein the vibration source includes a screw compressor.6. The external isolation system of claim 1 , wherein the functional isolating member includes a bellow-like region.7. A method of providing external sound control to a vibration source claim 1 , comprising:reducing vibration transmission between a vibration source and a functional component;reducing vibration transmission between the vibration source and a support structure supporting the vibration source; andreducing sound radiated from the vibration source.8. The method of claim 7 , wherein the reducing ...

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Номер записи: 94
10-05-2018 дата публикации

SCROLL COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

Номер: US20180128270A1
Автор: Koyama Shuhei, NAKATANI Masahiro
Принадлежит:

A scroll compressor includes a shell, a fixed scroll and an orbiting scroll disposed in the shell, a first scroll wrap and a second scroll wrap that are provided in the fixed scroll and the orbiting scroll, respectively, and that are engaged with each other to form a plurality of compression chambers, a crankshaft that causes the orbiting scroll to perform eccentric revolving motion, a tip seal member that is inserted in the tip of the second scroll wrap along the spiral direction and that is in sliding contact with the first baseplate of the fixed scroll, and injection ports that are provided through the first baseplate of the fixed scroll and that introduce refrigerant at an intermediate pressure between suction pressure and discharge pressure into the compression chambers from the outside of the shell. 1. A scroll compressor comprising:a shell;a fixed scroll and an orbiting scroll disposed in the shell;scroll wraps provided respectively in the fixed scroll and the orbiting scroll, the scroll wraps being engaged with each other to form a plurality of compression chambers;a crankshaft configured to cause the orbiting scroll to perform eccentric revolving motion;a tip seal member inserted in a tip of each of the scroll wraps of the orbiting scroll along a spiral direction and being in sliding contact with a baseplate of the fixed scroll; andinjection ports provided through the baseplate of the fixed scroll and configured to introduce refrigerant having an intermediate pressure between suction pressure and discharge pressure into the compression chambers from an outside of the shell,whereinthe refrigerant is composed only of carbon dioxide or is a mixed refrigerant containing carbon dioxide, andeach of the injection ports has a diameter ϕinj and the tip seal member has a width TIP in a direction perpendicular to the spiral direction, the diameter ϕinj and the width TIP having a relationship of ϕinj≤0.95 ×TIP.2. The scroll compressor of claim 1 , wherein the injection ...

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Номер записи: 95
11-05-2017 дата публикации

Liquid-Cooled Compressor and Method for Operating Same

Номер: US20170130720A1
Автор: OHTA HIROSHI, YORIKANE Shigeyuki
Принадлежит:

Typical liquid-cooled compressors use the effective means of reducing no-load power by repeatedly starting and stopping an electric motor according to the amount of required air, but sufficient consideration has not been given to the fact that frequent starting and stopping of large-output electric motors leads to a decline in motor reliability. In order to solve this problem, a liquid-cooled compressor for circulating a liquid inside a compressor body using a pressure difference, and equipped with a cooling channel for circulating said liquid for cooling, configured so as to have an intake valve for adjusting the air intake of the compressor body, to change the amount of air taken in through the intake valve, and as a result, to perform a low-pressure operation during no-load operation at two levels of reduced operating pressure consisting of a value no less than a minimum circulation oil supply pressure and a low value. As a result, possible to provide a compressor which balances ensuring the reliability of the compressor and the electric motor during no-load operation of a large-output electric motor, and improving energy efficiency during no-load operation by reducing surplus power. 111.-. (canceled)12. A liquid-cooled compressor provided with a cooling channel for circulating cooling liquid and so configured that the liquid is circulated in the compressor body by a pressure difference , comprising:an intake valve for adjusting the air intake of the compressor body,wherein during no-load operation, reduced pressure operation is performed at two levels of reduced pressure operation pressure, a value equal to or higher than a minimum circulation oil supply pressure and a low value by varying the amount of air taken in through the intake valve.13. The liquid-cooled compressor according to claim 12 , comprising:a channel letting a place, located on the downstream side of the compressor body, where a pressure is maintained and the intake valve communicate with each ...

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Номер записи: 96
21-05-2015 дата публикации

Housing for a rotary vane pump

Номер: US20150139845A1
Автор: Christopher Kobus, Kevin Schneider
Принадлежит: Pfeiffer Vacuum GmbH

A housing for a rotary vane pump includes a suction flange and a discharge flange having a multi-angular cross-section with at least two sides extending parallel to each other, cooling ribs provided on an outer surface of the housing, with the number of cooling ribs in the region with a high internal pressure being greater than a number of cooling ribs in the region with a low internal pressure, inlet and outlet, with the inlet cross-section being greater than the outlet cross-section, and connection elements provided on the housing and each having two installation surfaces connected by a connection surface.

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Номер записи: 97
01-09-2022 дата публикации

Pump

Номер: US20220275803A1
Автор: Pietro Francesco Crosio
Принадлежит: VHIT SpA

Pump ( 1 ) comprising:—means ( 2 ) for pumping a working fluid;—an electric motor ( 3 ) for actuating the pumping means ( 2 ); said motor ( 3 ) comprising a stator ( 31 ) and a rotor ( 32 ) that interact for the actuation of the pumping means ( 2 ); said rotor ( 32 ) being rotatable about an axis of rotation ( 320 );—an electronic unit ( 4 ) for controlling the electric motor ( 3 );—a conduit ( 5 ) for the delivery of the working fluid downstream of the pumping means ( 2 );—a line ( 6 ) for cooling the electric motor ( 3 ) and the electronic unit ( 4 ), said cooling line ( 6 ) being permanently open and drawing off some of the working fluid processed by the pumping means ( 2 ). The cooling line ( 6 ) comprises a first conduit ( 61 ) which is developed from a delivery area ( 22 ) of the pumping means ( 2 ).

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Номер записи: 98
02-05-2019 дата публикации

ELECTRIC COMPRESSOR, AND REFRIGERATION AIR-CONDITIONING APPARATUS

Номер: US20190128249A1
Автор: AKATA Hiroyuki, NAITO Koji, OOTA Ryou, Ueda Hideyuki, Yoshida Yasutaka
Принадлежит:

An electric compressor is provided which has: in a sealed container, a compression mechanism to compress a refrigerant and an electric motor to drive the compression mechanism, wherein the refrigerant contains 20% by mass or more of hydrofluoroolefin, and a refrigerator oil stored in the sealed container contains; polyvinyl ether as a base oil; an alicyclic epoxy compound in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil; an aliphatic epoxy compound in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil; and tertiary phosphate in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil. 1. An electric compressor comprising;in a sealed container, a compression mechanism to compress a refrigerant and an electric motor to drive the compression mechanism,wherein the refrigerant contains 20% by mass or more of hydrofluoroolefin, and polyvinyl ether as a base oil,', 'an alicyclic epoxy compound in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil,', 'an aliphatic epoxy compound in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil, and', 'tertiary phosphate in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil., 'a refrigerator oil stored in the sealed container contains'}2. The electric compressor according to claim 1 , whereinthe electric motor drives the compression mechanism through a rotation axis supported by a rolling bearing to be lubricated with the refrigerator oil.3. The electric compressor according to claim 1 , whereinthe hydrofluoroolefin is at least one selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, trifluoroethene, and 3,3,3-trifluoropropene.4. The electric compressor according to claim 1 , whereinthe alicyclic epoxy compound is 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate.5. The electric compressor according to claim 1 , ...

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Номер записи: 99
02-05-2019 дата публикации

Oil-Cooled Screw Compressor

Номер: US20190128264A1
Автор: KAMEYA Hirotaka, Takano Masahiko, Tanaka Hideharu, Tsuchiya Takeshi
Принадлежит:

The objective of the present invention is to reduce loss factors that occur inside an oil-cooled screw compressor and to improve energy efficiency. In oil-cooled screw compressors, compression is carried out by reducing the volume of an operation chamber in which a gas to be compressed and an oil are mixed and contained, and when a predetermined rise in pressure is complete, a discharge port opens and the gas to be compressed and the oil are discharged. In the operation chamber, the reduction in volume continues and reaches zero, such that the operation chamber disappears, and the opening area of the discharge port also gradually decreases. Immediately before the operation chamber disappears, the ratio of the oil within the operation chamber is high and the opening area of the discharge port is small. Therefore, the discharge resistance increases and the internal pressure dramatically rises, and this has led to increases in the torque rotating the rotor. Thus, in the present invention, a tooth crest arc of a fixed width is provided to the tooth crest of a male tooth profile, and simultaneously a tooth bottom arc is provided to the tooth bottom of a female tooth profile. Due to the actions thereof, the operation chamber immediately before disappearing exists only in a bottom half region from a line that connects the centers of the male and female tooth profiles, and the opening area relative to the volume of the operation chamber can be increased. As a result, the discharge of oil becomes smooth and energy loss is reduced. 18. to . (canceled.)9. An oil-cooled screw compressor comprising:a pair of a male rotor and a female rotor that mesh with each other around parallel two axes and each have twisted teeth,wherein a tooth profile of the female rotor has a circular arc section that coincides with an inscribed circle of the female rotor.10. The oil-cooled screw compressor according to claim 9 , wherein the tooth profile of the male rotor has a circular arc section ...

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Номер записи: 100