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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 2275. Отображено 100.
13-09-2012 дата публикации

Stationary volume ratio adjustment mechanism

Номер: US20120227437A1
Автор: Paul Nemit, Jr., Timothy I. AUMAN
Принадлежит: Johnson Controls Technology Co

A screw compressor with a volume ratio adjustment mechanism. The volume adjustment mechanism is a penetration in the housing of a screw compressor. The penetration includes one or more apertures. The apertures provide a flow path between the compressor outlet and an interlobe region of the screw compressor rotors. A member resides in the penetration and is movable from a first position in which the apertures are blocked and the flow path is closed and a second position in which the apertures are not blocked and the flow path is open. By unblocking the apertures and opening the flow path, the volume ratio can be adjusted.

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Номер записи: 1
08-11-2012 дата публикации

Compressor

Номер: US20120282129A1
Автор: Paul Nemit, Jr.
Принадлежит: Johnson Controls Technology Co

A compressor including a compression mechanism configured and positioned to receive vapor from an intake passage and provide compressed vapor to a discharge passage. An opening is positioned in the compression mechanism in fluid communication with the discharge passage. A valve has an aperture formed therein, the aperture configured and positioned in fluid communication with a passageway to provide a path for a pressurized vapor flow to a first chamber and a first piston without mixing with vapor in the discharge passage. A second chamber is in fluid communication with a second piston and the discharge passage, the first piston and the second piston of the valve configured to move together. First piston and second piston movement are controllable in response to predetermined conditions to maintain the magnitude of pressure of the compression mechanism immediately upstream of the opening at substantially the same pressure magnitude at the discharge passage.

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Номер записи: 2
04-07-2013 дата публикации

Screw compressor

Номер: US20130171018A1
Автор: Akira Matsuoka, Hiromichi Ueno, Masanori Masuda, Mohammod Anwar Hossain, Takashi Inoue
Принадлежит: Daikin Industries Ltd

A screw compressor includes a casing having low and high pressure spaces, a screw rotor inserted in a cylinder part of the casing, and a slide valve disclosed in the cylinder part. The screw rotor has a plurality of helical grooves forming a compression chamber. The slide valve is moveable along an axis of the screw rotor and faces an outer periphery of the screw rotor to form a discharge port to communicating the compression chamber with the high pressure space. Fluid in the low pressure space is sucked into the compression chamber, compressed, and then discharged to the high-pressure space when the screw rotor rotates. The slide valve includes a sealing projection located on a back surface of the slide valve opposite to the screw rotor, and separating the low and high pressure spaces from each other when the sealing projection is in slidable contact with the casing.

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Номер записи: 3
11-07-2013 дата публикации

ROTARY VANE PUMPS WITH ASYMMETRICAL CHAMBER CAVITIES

Номер: US20130177466A1
Автор: Blackburn Christopher Lee
Принадлежит: GAST MANUFACTURING, INC., A Unit of IDEX Corporation

Rotary vane pumps include casings having asymmetrical cavities that accommodate a rotor. For a single pump chamber, one portion of the rotor abuts or nearly abuts the inner wall of the cavity at a single location while one portion of the rotor and the inner wall are not in contact with each other thereby defining a pump chamber. For a dual pump chamber embodiment, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining the two pump chambers. The two pump chambers are disposed on opposite sides of the minor axis of the cavity. The cavities of each pump are skewed so each pump chamber is larger in volume at the inlet end than at the outlet end. 1. A rotary vane pump comprising:a casing comprising an asymmetrical cavity having a continuous inner wall, the cavity having a minor axis and a major axis;a rotor disposed within the cavity for rotation within the cavity, during a rotation, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity at or near the minor axis of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining two pump chambers disposed on opposite sides of the minor axis;each pump chamber comprising an inlet end and an outlet end, the inlet ends disposed in different pump chambers on opposite sides of the minor axis and on opposite sides of the major axis, the outlet ends disposed in different pump chambers on opposite sides of the minor axis and on opposite sides of the major axis;each pump chamber being larger in volume between the inlet end and major axis than between the major axis and the outlet end.2. The pump of wherein the rotor comprises a plurality of slots ranging from 3 to 12 with each slot accommodating a vane.3. The pump of wherein the rotor comprises about 8 slots and about 8 vanes.4. The pump of wherein an ...

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Номер записи: 4
22-08-2013 дата публикации

VOLUME RATIO CONTROL SYSTEM AND METHOD

Номер: US20130216414A1
Автор: Comstock Angela Marie, JR. Paul, Kopko William L., Nemit
Принадлежит: Johnson Controls Technology Company

A system and method for controlling the volume ratio of a compressor is provided. The system can use a port () or ports in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A control valve () can be used to open or close the port or ports to obtain different volume ratios in the compressor. The control valve () can be moved or adjusted by one or more valves that control a flow of fluid to the valve. A control algorithm can be used to control the one or more valves to move the control valve to obtain different volume ratios from the compressor. The control algorithm can control the one or more valves in response to operating parameters associated with the compressor. 1. (canceled)2. A compressor comprising:an intake passage;a discharge passage;a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage;a port positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage;a valve positioned near the port to control vapor flow through the port;the valve having a first position to permit a first vapor flow from the compression mechanism to the discharge passage, a second position to permit a second vapor flow from the compression mechanism to the discharge passage and a third position to prevent vapor flow from the compression mechanism to the discharge passage;the compressor having a first volume ratio in response to the valve being in the first position, a second volume ratio in response to the valve being in the second position and a third volume ratio in response to the valve being in the third position, the first volume ratio being less than the second volume ratio and the the second volume ratio being less than the third volume ratio;at least one solenoid valve, the at least one solenoid valve being positioned to control a flow of fluid to the ...

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Номер записи: 5
27-03-2014 дата публикации

Apparatus and Method for Enhancing Compressor Efficiency

Номер: US20140083130A1
Автор: Picouet Jean-Louis
Принадлежит: VILTER MANUFACTURING LLC

Disclosed herein is a single screw gas compressor having a housing including a cylindrical bore, a primary and secondary gate rotors mounted for rotation in the housing, each gate rotor having a plurality of gear teeth, a main rotor rotatably mounted in the bore and having a plurality of grooves and a plurality of threads, wherein each groove meshingly engages at least one of the gear teeth from each gate rotor, a primary economizer port in communication with the cylindrical bore, and a secondary economizer port in communication with the cylindrical bore. 1. A single screw gas compressor comprising:a housing including a cylindrical bore;primary and secondary gate rotors mounted for rotation in the housing, each gate rotor having a plurality of gear teeth;a main rotor rotatably mounted in the bore and having a plurality of grooves and a plurality of threads, wherein each groove meshingly engages at least one of the gear teeth from each gate rotor;a primary economizer port in communication with the cylindrical bore; anda secondary economizer port in communication with the cylindrical bore.2. The compressor of further including a first gas compression chamber created by a portion of the primary gate rotor claim 1 , a portion of a respective main rotor groove claim 1 , and the cylindrical bore claim 1 , and a second gas compression chamber created by a portion of the secondary gate rotor claim 1 , a portion of a respective main rotor groove claim 1 , and the cylindrical bore.3. The compressor of claim 2 , wherein gas is received in the first gas compression chamber via the primary economizer port during rotational operation of the main rotor.4. The compressor of claim 2 , wherein gas is received in the second gas compression chamber via the secondary economizer port during rotational operation of the main rotor.5. The compressor of claim 4 , further including a secondary discharge port opening claim 4 , wherein gas in the second gas chamber is discharged via the ...

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Номер записи: 6
10-04-2014 дата публикации

PUMP

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

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

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Номер записи: 7
01-01-2015 дата публикации

Refrigerant Compressor

Номер: US20150004015A1
Автор: Agha Ashraf, Kienzle Dominic, Roelke Stephan
Принадлежит:

In order to further improve the sound damping in a refrigerant compressor comprising a common housing, a screw-type compressor which is provided in the common housing and has a compressor housing that is formed as part of the common housing and in which there is arranged at least one screw rotor boring, at least one screw rotor that is arranged in the screw rotor boring such as to be rotatable about a rotational axis, a suction-side bearing unit for the screw rotor that is arranged on the compressor housing, at least one pressure-side bearing unit for the screw rotor that is arranged on the compressor housing and a housing window for compressed refrigerant that is provided on the compressor housing, and a first sound absorber unit which is arranged in the common housing, it is proposed that the first sound absorber unit be arranged adjacent the housing window, and that the sound absorber unit comprise at least one chamber which is located between an inlet opening and an outlet opening and which widens out relative to the inlet opening and to the outlet opening in a direction transverse to a direction of flow. 1. A refrigerant compressor comprisinga common housing,a screw-type compressor which is provided in the common housing and has a compressor housing that is formed as part of the common housing and in which there is arranged at least one screw rotor boring, at least one screw rotor that is arranged in the screw rotor boring such as to be rotatable about a rotational axis, a suction-side bearing unit for the screw rotor that is arranged on the compressor housing, at least one pressure-side bearing unit unit for the screw rotor that is arranged on the compressor housing and a housing window for compressed refrigerant that is provided on the compressor housing,and a first sound absorber unit which is arranged in the common housing,the first sound absorber unit is arranged after the housing window, and in that the sound absorber unit comprises at least one chamber ...

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Номер записи: 8
01-01-2015 дата публикации

CAPACITY-MODULATED SCROLL COMPRESSOR

Номер: US20150004039A1
Автор: DOEPKER Roy
Принадлежит:

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

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Номер записи: 9
14-01-2021 дата публикации

Screw-Type Compressor for a Utility Vehicle

Номер: US20210010475A1
Автор: HEBRARD Gilles, MARESCOT Jean-Baptiste, MELLAR Joerg, WEINHOLD Thomas
Принадлежит: KNORR-BREMSE Systems fuer Nutzfahrzeuge GmbH

A screw compressor for a utility vehicle has at least one housing with at least one housing cover and with at least one rotor housing, at least one baffle plate and at least one seal. In the assembled state, an oil sump is present in the housing, wherein, with regard to the assembled state, the seal is arranged between housing cover and rotor housing and projects out of the oil sump. The seal at least partially separates the interior of the housing cover from the interior of the rotor housing. With regard to the assembled state, in the case of a substantially horizontal orientation of the screw-type compressor and in the case of a substantially horizontal orientation of the oil sump, the baffle plate is oriented substantially parallel to the upper level of the oil sump. 114-. (canceled)15. A screw compressor for a utility vehicle , comprising:at least one housing with at least one housing cover and with at least one rotor housing;at least one baffle plate; andat least one seal, whereinin an assembled state, an oil sump is present in the housing,in relation to the assembled state, the seal is arranged between the housing cover and the rotor housing and projects out of the oil sump,the seal at least partially separates an interior of the housing cover and an interior of the rotor housing from one another, andin relation to the assembled state, in the case of a substantially horizontal orientation of the screw compressor and in the case of a substantially horizontal orientation of the oil sump, the baffle plate is oriented substantially parallel to an upper level of the oil sump.16. The screw compressor as claimed in claim 15 , whereinthe baffle plate has at least one oil passage opening.17. The screw compressor as claimed in claim 15 , whereinthe baffle plate has multiple oil passage openings.18. The screw compressor as claimed in claim 15 , whereinthe baffle plate and the seal divide the interior of the screw compressor into multiple interconnected compartments.19. ...

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Номер записи: 10
18-01-2018 дата публикации

Variable economizer injection position

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

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

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Номер записи: 11
21-01-2021 дата публикации

SYSTEMS AND METHODS FOR ENHANCED COMPRESSOR BEARING LIFE

Номер: US20210017987A1
Автор: EATON, Griffith Bruce Lee, II David Eugene, Neel John Lloyd, TYCHSEN Holger, Wu Tianshi
Принадлежит:

The present disclosure relates to a bearing load control system that includes a force application device configured to apply a force to a bearing of a compressor and a sensor configured to provide feedback indicative of an operating parameter of the compressor. The bearing load control system also includes a controller that is communicatively coupled to the sensor and configured to determine an indication of a thrust force applied to the bearing based on the feedback indicative of the operating parameter. The controller is also configured to adjust the force application device to control the force applied to the bearing based at least in part on a control algorithm and the indication of the thrust force. 1. A bearing load control system , comprising:a force application device configured to apply a force to a bearing of a compressor;a sensor configured to provide feedback indicative of an operating parameter of the compressor; anda controller, wherein the controller is communicatively coupled to the sensor and configured to determine an indication of a thrust force applied to the bearing based on the feedback indicative of the operating parameter, wherein the controller is configured to adjust the force application device to control the force applied to the bearing based at least in part on a control algorithm and the indication of the thrust force.2. The bearing load control system of claim 1 , wherein the controller is configured to adjust the force application device to control the force claim 1 , such that a resultant force applied to the bearing is within a threshold range of a target bearing load.3. The bearing load control system of claim 1 , wherein the force and the thrust force are applied in a same direction with respect to a central axis of the compressor or applied in substantially opposite directions with respect to the central axis of the compressor.4. The bearing load control system of claim 1 , wherein the sensor is configured to provide additional ...

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Номер записи: 12
28-01-2016 дата публикации

COMPRESSOR WITH CAPACITY MODULATION AND VARIABLE VOLUME RATIO

Номер: US20160025093A1
Автор: DOEPKER Roy J.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor is provided and may include a shell assembly defining a suction pressure region and a discharge pressure region. A first scroll member may include a first discharge port and a first modulation port. A second scroll member may include a first variable volume ratio port. A capacity modulation valve assembly may be in fluid communication with the first modulation port and may be displaceable between open and closed positions to selectively provide communication between a first intermediate compression pocket and the suction pressure region via the first modulation port. A variable volume ratio valve assembly may be in fluid communication with the first variable volume ratio port. The variable volume ratio valve assembly may be displaceable between open and closed positions to selectively provide communication between a second intermediate compression pocket and the discharge pressure region via the first variable volume ratio port. 1. (canceled)2. A compressor comprising:a shell assembly;a first scroll member disposed within said shell assembly, said first scroll member including a first end plate defining a discharge port and a first port and having a first spiral wrap extending from a first side thereof;a second scroll member disposed within said shell assembly and including a second end plate defining a second port and having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a suction-pressure pocket in fluid communication with a suction-pressure region disposed outside of said first and second spiral wraps, intermediate-pressure pockets, and a discharge-pressure pocket in fluid communication with a discharge-pressure region disposed outside of said first and second spiral wraps, a first of said intermediate-pressure pockets being in fluid communication with said first port and a second of said intermediate-pressure pockets being in fluid communication with said second port;a motor assembly driving ...

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Номер записи: 13
26-01-2017 дата публикации

SUPERCHARGER WITH INTEGRATED CONTRACTION CHAMBER FOR NOISE ATTENUATION

Номер: US20170022991A1
Автор: Keyes Sean A., Loughlin Neil W., McLean Ian, Orzechowski Jeffrey M.
Принадлежит:

A supercharger for a vehicle includes a lower body housing a compressor and an upper lid having a contraction chamber. The upper lid includes an air circulation port and is configured to be coupled to the lower body thereby forming a plenum. The contraction chamber is integrally formed in the upper lid adjacent to the air circulation port and includes an attenuator plate that defines a tuning neck. The tuning neck defines an inlet to and part of a volume of the contraction chamber, and includes a predetermined size and shape configured to attenuate a desired sound frequency generated by operation of the supercharger. 1. A supercharger for a vehicle , the supercharger comprising:a lower body housing a compressor;an upper lid configured to be coupled to the lower body thereby forming a plenum, the upper lid defining an air circulation port; anda contraction chamber integrally formed in the upper lid adjacent to the air circulation port, the contraction chamber including an attenuator plate defining a tuning neck, the tuning neck defining an inlet to and part of a volume of the contraction chamber;wherein the tuning neck includes a predetermined size and shape configured to attenuate a desired sound frequency generated by operation of the supercharger.2. The supercharger of claim 1 , wherein the contraction chamber is positioned entirely in the upper lid.3. The supercharger of claim 1 , wherein the upper lid extends along a longitudinal length from a rear side to an opposed upstream front side and between opposed lateral sides claim 1 , the air circulation port being disposed at the front side; andwherein the attenuation plate is positioned perpendicular to a longitudinal axis of the upper lid that extends parallel to the longitudinal length, and the tuning neck includes a predetermined length in a direction of the longitudinal axis that is configured to attenuate the desired sound frequency.4. The supercharger of claim 3 , wherein the predetermined shape of the tuning ...

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Номер записи: 14
10-02-2022 дата публикации

Screw compressor slide valve and screw compressor with gas pulsation attenuation function

Номер: US20220042510A1
Автор: Chuang WANG, Minglong Zhou, Wenqing Chen, Zhilong He, Ziwen XING
Принадлежит: Xian Jiaotong University

A screw compressor slide valve with gas pulsation attenuation function includes valve walls and internal through holes. A screw compressor includes the screw compressor slide valve. A part of exhausted gas of the screw compressor is directly discharged from an exhaust port to an exhaust chamber to form a main exhaust flow channel; another part of the exhausted gas is discharged from the exhaust port into the exhaust chamber after being delayed by the internal through holes, which forms a branched exhaust flow channel. Since the branched exhaust flow channel is longer than the main exhaust flow channel, when the gas pulsation in the branched exhaust flow channel lags behind that in the main exhaust flow channel by 180-degree in phase, two gas pulsations in the two flow channels are offset due to opposite gas pulsation phases, which attenuates the gas pulsation, thereby suppressing induced vibration and noise.

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Номер записи: 15
24-01-2019 дата публикации

OIL-FREE SCREW COMPRESSOR

Номер: US20190024663A1
Автор: INAZAKI Mio, MIYATAKE Toshiyuki, Yano Yoshio, YOSHIMURA Shoji
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

The oil-free screw compressor includes: a screw rotor, a bearing configured to support a rotor shaft, a shaft seal device including an oil seal arranged at a position closer to the bearing and a gas seal arranged on at a position closer to the rotor chamber, an atmosphere communication space communicating with an atmosphere communication hole, and an oil return groove including a return inclined surface inclined so as to expand in diameter radially outward from a gas seal-side end to an oil seal-side end. The oil seal portion is a viscoseal including a spiral groove portion. An inner peripheral surface of the oil seal includes an inner peripheral boundary portion that defines a part of the atmosphere communication space, on a side closer to the bearing in the atmosphere communication hole. The oil seal-side end is arranged in a vicinity of the inner peripheral boundary portion and at a position closer to the bearing. 1. An oil-free screw compressor comprising:a screw rotor accommodated in a rotor chamber of a casing of a compressor;a bearing configured to support a rotor shaft of the screw rotor;a shaft seal device arranged in a shaft seal space of the casing, the shaft seal space being formed between the rotor chamber and the bearing, the shaft seal device including an oil seal arranged at a position closer to the bearing and a gas seal arranged at a position closer to the rotor chamber;an atmosphere communication space formed between an oil seal portion formed in any one of the oil seal and the rotor shaft and a gas seal portion of the gas seal, the atmosphere communication space communicating with an atmosphere communication hole; andan oil return groove formed on the rotor shaft, the oil return groove including a return inclined surface inclined so as to expand in diameter radially outward from a gas seal-side end to an oil seal-side end of the return inclined surface,wherein the oil seal portion is a viscoseal including a spiral groove portion,wherein an inner ...

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Номер записи: 16
29-01-2015 дата публикации

COMPRESSOR DEVICE AS WELL AS THE USE OF SUCH A COMPRESSOR DEVICE

Номер: US20150030491A1
Автор: Desiron Andries Jan F.
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

Compressor device that is at least provided with a screw compressor with a compression chamber that is formed by a compression housing, with a drive motor that is provided with a motor chamber formed by a motor housing and with an outlet for the discharge of compressed air that is connected to a pressure vessel via an outlet pipe, whereby the compression housing and the motor housing are connected directly to one another to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the outlet pipe between the pressure vessel and the screw compressor is free of closing means. 137-. (canceled)38. A compressor device comprising:a screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed compressor rotors in the form of a screw are rotatably mounted;a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted that drives at least one of the aforementioned two compressor rotors;an inlet to the screw compressor for the supply of air;an outlet to the screw compressor for the discharge of compressed air, and which is connected to a pressure vessel via an outlet pipe;an air outlet on the pressure vessel for the supply of compressed air from the pressure vessel to a consumer; an inlet valve on the inlet of the screw compressor; and,', 'a tap or valve to close and open the air outlet of the pressure vessel;, 'a control system for controlling one or more liquid or gas flows in the compressor device; said control system being provided withwherein the compression housing and the motor housing are connected directly to one another to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the outlet pipe between the pressure vessel and the screw compressor is free of closing means in order to enable a flow through the outlet ...

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Номер записи: 17
01-02-2018 дата публикации

GAS COMPRESSOR

Номер: US20180030833A1
Автор: Miyaji Toshikatsu
Принадлежит: Calsonic Kansei Corporation

A gas compressor is configured such that a suction-side area that is in sliding contact with the inner circumferential surface of a cylinder chamber when a compression chamber is in the suction stroke has a larger radius of curvature than that of a compression-side area that is in sliding contact with the inner circumferential surface of the cylinder chamber when the compression chamber is in the compression stroke. 1. A gas compressor comprising:a cylinder block in a cylindrical shape, having a cylinder chamber where to compress refrigerant;a rotor rotatably provided in the cylinder chamber, the rotor having an outer circumferential surface facing an inner circumferential surface of the cylinder chamber and a plurality of vane slots opening on the outer circumferential surface with intervals in a rotational direction of the rotor; anda plurality of vanes housed in the respective vane slots and biased in a direction of protruding from the outer circumferential surface, distal end surfaces of the vanes sliding on the inner circumferential surface along with rotation of the rotor, the vanes partitioning a space between the outer circumferential surface and the inner circumferential surface into a plurality of compression chambers in which the refrigerant is sucked and compressed, whereinthe distal end surface of each of the vanes has a suction-side area that is in sliding contact with the inner circumferential surface when the compression chamber separated by the vane having the distal end surface is in a suction stroke, and a compression-side area that is in sliding contact with the inner circumferential surface when the compression chamber separated by the vane having the distal end surface is in a compression stroke,the suction-side area and the compression-side area have smaller radii of curvature than that of the inner circumferential surface, andthe suction-side area has a larger radius of curvature than that of the compression-side area.2. The gas compressor ...

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Номер записи: 18
17-02-2022 дата публикации

Screw Compressor

Номер: US20220049700A1
Автор: CHIBA Kotaro, Morita Kenji, Takano Masahiko, YORIKANE Shigeyuki
Принадлежит:

A screw compressor is provided which can reduce the pressure loss in a suction flow passage. A casing of the screw compressor includes a bore that accommodates a lobed portion A of a male rotor A and a lobed portion B of a female rotor B therein such that working chambers are formed in lobe grooves of the lobed portions, a suction port located on an outer side in a rotor radial direction, and a suction flow passage that communicates in a rotor axial direction with working chambers that are in a suction stroke. The suction flow passage includes a male rotor side suction flow passage A located on an male rotor A side and besides on a downstream side with respect to a virtual plane C, and a female rotor side suction flow passage B located on an female rotor B side and besides on the downstream side with respect to the virtual plane C. The male rotor side suction flow passage A is formed such that a flow passage wall A on the outer side in the rotor radial direction is located at a position that is the same as that of a wall of the bore as viewed in the rotor axial direction at least within a range of one half of an axial pitch P of the lobed portion A of the male rotor A from a suction side end surface of the lobed portion A in the rotor axial direction. 1. A screw compressor , comprising:a male rotor having a lobed portion;a female rotor having a lobed portion that engages with the lobed portion of the male rotor; anda casing that accommodates the male rotor and the female rotor,the casing including a bore that accommodates the lobed portion of the male rotor and the lobed portion of the female rotor therein such that working chambers on a male rotor side and working chambers on a female rotor side are formed in lobe grooves of the lobed portions, a suction port located on an outer side in a rotor radial direction with respect to the lobed portion of the male rotor and the lobed portion of the female rotor, and a suction flow passage formed so as to connect the ...

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Номер записи: 19
01-05-2014 дата публикации

SCREW TYPE LIQUID RING PUMP WITH INTEGRATED MACERATOR

Номер: US20140119975A1
Автор: Øvsthus Aksel, Øvsthus Eimund
Принадлежит: JETS INVEST AS

Screw type liquid ring pump () with an integrated grinder or macerator (), including a pump housing () with an inlet () and an outlet () and an, inside the housing, rotating helical screw rotor (), which rotor at one end, the inlet end of the pump housing is provided with the grinder () and at the other end, the outlet end of the pump housing is communicating with a pressure chamber (). 1. (canceled)2. Screw pump according to claim 8 , the length and curvature of each wing of the rotary cutter varying depending on size claim 8 , capacity and angular velocity of the screw pump.3. Screw pump according to claims 8 , the stationary cutter including inwardly claims 8 , in relation to the helical screw rotor claims 8 , protruding fingers claims 8 , the plurality of cutting edges or knives of the stationary cutter being on respective ones of the fingers so as to define positive cutting angle edges thereto.4. Screw pump according to claims 8 , helical screw rotor having rotor wings extending in a direction claims 8 , the helical wings of the rotary cutter corresponding to and having the same direction as the rotor wings such that grooves defined between the fingers of the stationary cutter have a direction opposite to the direction of the helical wings.5. Screw pump according to claim 2 , the stationary cutter including inwardly claim 2 , in relation to the helical screw rotor claim 2 , protruding fingers claim 2 , the plurality of cutting edges or knives of the stationary cutter being on respective ones of the fingers so as to define positive cutting angle edges thereto.6. Screw pump according to claim 3 , the helical screw rotor having rotor wings extending in a direction claim 3 , the helical wings of the rotary cutter corresponding to and having the same direction as the rotor wings such that grooves defined between the fingers of the stationary cutter have a direction opposite to the direction of the helical wings.7. Screw pump according to claim 5 , the helical screw ...

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Номер записи: 20
08-02-2018 дата публикации

Variable Volume Ratio Compressor

Номер: US20180038369A1
Автор: DOEPKER Roy J., PEREVOZCHIKOV Michael M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening. 1. A compressor comprising:a shell defining a discharge-pressure region and a suction-pressure region;a first scroll member disposed within the shell and including a first end plate and a first spiral wrap extending from a first side of the first end plate, the first end plate including a discharge passage, a first bypass passage and a second bypass passage extending through the first side and a second side of the first end plate;a second scroll member including a second spiral wrap cooperating with the first spiral wrap to define first and second fluid pockets therebetween, the first and second fluid pockets in communication with the first and second bypass passages, respectively;a partition plate disposed within the shell and separating the discharge-pressure region from the suction-pressure region, the partition plate including an opening in communication with the discharge-pressure region, the first scroll member including a hub through which the discharge passage extends;a bypass valve member disposed around the hub and movable between a first position in which the bypass valve member restricts fluid flow ...

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Номер записи: 21
08-02-2018 дата публикации

Variable Volume Ratio Compressor

Номер: US20180038370A1
Автор: Michael M. Perevozchikov, Roy J. Doepker
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening.

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Номер записи: 22
06-02-2020 дата публикации

SCREW COMPRESSOR

Номер: US20200040896A1
Автор: ENDO Yasuaki, MATSUO Kouichi
Принадлежит:

A screw compressor includes a screw rotor, a rotor casing accommodating the screw rotor, and an internal-volume-ratio-adjusting valve capable of changing internal volume ratio. The internal-volume-ratio-adjusting valve includes a valve body movable along an axial direction of the screw rotor and defining a gas-discharge position, and a cylinder containing at least one pressurizing chamber with a cylinder rod and a piston. The cylinder rod is coupled to the valve body and disposed along the axial direction. The piston is fixed inside the pressurizing chamber to the cylinder rod and divides the pressurizing chamber into two pressurizing spaces along the axial direction. The screw compressor further includes a first communication passage connecting one of the two pressurizing spaces with the discharge gas passage, and a second communication passage connecting the other with a just-before-discharge tooth space immediately before a tooth space that communicates with the discharge port. 1. A screw compressor comprising:a screw rotor including a pair of a male rotor and a female rotor;a rotor casing accommodating the screw rotor, the rotor casing having a suction gas passage and a suction port through which a gas is sucked and a discharge port and a discharge gas passage through which the gas is discharged; andan internal-volume-ratio adjusting valve capable of changing an internal volume ratio, a valve body disposed inside the rotor casing, the valve body being movable along an axial direction of the screw rotor and defining a discharge position at which the gas is discharged from tooth spaces formed between the screw rotor and the rotor casing to the discharge port; and', 'a cylinder containing at least one pressurizing chamber and having a cylinder rod and a piston, the cylinder rod being coupled to the valve body and being disposed along the axial direction of the screw rotor, the piston being fixed inside the or each pressurizing chamber to the cylinder rod and ...

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Номер записи: 23
06-02-2020 дата публикации

SCREW COMPRESSOR WITH MAGNETIC GEAR

Номер: US20200040898A1
Автор: Sishtla Vishnu M., Tangudu Jagadeesh
Принадлежит:

A screw compressor () includes a casing () having a suction port and a discharge port, a male rotor () rotatable relative to said casing about a first axis (A), a female rotor () rotatable relative to said casing about a second axis (B), and a magnetic gear system including a first magnetic gear () associated with said male rotor and a second magnetic gear () associated with said female rotor. The first magnetic gear and the second magnetic gear are positioned such that a magnetic field of said first magnetic gear interacts with said second magnetic gear to drive rotation of said female rotor about said second axis. 1. A screw compressor comprising:a casing having a suction port and a discharge port;a male rotor rotatable relative to said casing about a first axis;a female rotor rotatable relative to said casing about a second axis; anda magnetic gear system including a first magnetic gear associated with said male rotor and a second magnetic gear associated with said female rotor, said first magnetic gear and said second magnetic gear being positioned such that a magnetic field of said first magnetic gear interacts with said second magnetic gear to drive rotation of said female rotor about said second axis.2. The screw compressor of claim 1 , wherein said magnetic field of said first magnetic gear interacts with a magnetic field of said second magnetic gear as said first magnetic gear rotates about said first axis to drive rotation of said second magnetic gear about said second axis.3. The screw compressor of claim 2 , wherein rotation of said first magnetic gear about said first axis in first direction drives rotation of said second magnetic gear about said second axis in a second direction opposite said first direction.4. The screw compressor of claim 1 , wherein said first magnetic gear and said second magnetic gear are magnetically aligned to transmit a required torque between said first magnetic gear and said second magnetic gear.5. The screw compressor of ...

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Номер записи: 24
15-02-2018 дата публикации

VARIABLE-CAPACITY COMPRESSOR AND REFRIGERATION DEVICE HAVING SAME

Номер: US20180045201A1
Автор: Gao Bin, WU Hualong, YU Yangbo
Принадлежит:

The present disclosure relates to a variable-capacity compressor () and a refrigeration device (). The variable-capacity compressor () comprises a housing (), a compression mechanism, two first suction conduits () and a variable-capacity valve (); the compression mechanism comprises two bearings () and a cylinder assembly, the cylinder assembly comprises a first cylinder () and a second cylinder (), at least one of the first cylinder () and the second cylinder () is configured as a variable-capacity cylinder, and a compression chamber () and a suction port (A) is formed in the variable-capacity cylinder; the variable-capacity valve () is disposed in the compression mechanism and configured to be movable between a communication position and an isolation position, wherein the variable-capacity cylinder operates when the variable-capacity valve () is located in the communication position, and the variable-capacity cylinder is unloaded when the variable-capacity valve () is located the isolation position. 1. A variable-capacity compressor , comprising:a housing;a compression mechanism disposed in the housing and comprising two bearings and a cylinder assembly disposed between the two bearings, in which the cylinder assembly comprises a first cylinder and a second cylinder, at least one of the first cylinder and the second cylinder is configured as a variable-capacity cylinder, and a compression chamber and a suction port is formed in the variable-capacity cylinder;two first suction conduits connected to the first cylinder and the second cylinder respectively; anda variable-capacity valve disposed in the compression mechanism and configured to be movable between a communication position where the compression chamber is communicated with the suction port and an isolation position where the compression chamber is isolated from the suction port,wherein the variable-capacity cylinder operates when the variable-capacity valve is located in the communication position, and the ...

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Номер записи: 25
14-02-2019 дата публикации

SINGLE-STAGE COMPRESSOR AND ENERGY SYSTEM USING THE SAME

Номер: US20190048873A1
Автор: BAIK Young Jin, CHO Jun Hyun, LEE Beom Joon, LEE Gil Bong, LEE Young Soo, RA Ho Sang, SHIN Hyung Ki
Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

A single-stage compressor including one compressing unit, includes: a housing having a compressing chamber formed therein and including a suction port, which is located in one side of the compressing chamber and into which a working fluid enters, and an injection port, which is located on the compressing chamber to be spaced apart from the suction port by a predetermined distance and into which an intermediate-pressure working fluid is injected; and an intermediate-pressure valve installed on an intermediate-pressure fluid flow path on which the intermediate-pressure working fluid moves and configured to control supply of the intermediate-pressure working fluid so that the intermediate-pressure working fluid is supplied to the injection port in response to an intermediate pressure of the compressing chamber. In the injection-type compressor having a single chamber, a working fluid is injected at an intermediate pressure (not in the proximity of a suction pressure) so that efficiency and capability of the injection-type compressor having a single chamber can be improved. The injection-type compressor having a single chamber has a simple structure and is easily manufactured so that a pressure of an injection port and a corresponding intermediate pressure can be selectively set in various ways. 1. A single-stage compressor including one compressing unit , the single-stage compressor comprising:a housing having a compressing chamber formed therein and comprising a suction port, which is located in one side of the compressing chamber and into which a working fluid enters, and an injection port, which is located on the compressing chamber to be spaced apart from the suction port by a predetermined distance and into which an intermediate-pressure working fluid is injected; andan intermediate-pressure valve installed on an intermediate-pressure fluid flow path on which the intermediate-pressure working fluid moves and configured to control supply of the intermediate- ...

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Номер записи: 26
25-02-2016 дата публикации

Screw Pump

Номер: US20160053761A1
Автор: Kösters Heiner, Temming Jörg
Принадлежит:

The invention relates to a screw pump having two screws, in which screw pump each screw has a first thread and a second thread. The threads extend in each case from a suction side to a delivery side. The threads are in engagement with one another, with the result that the threads are divided into a plurality of working chambers, the volume of which decreases from the suction side to the delivery side. According to the invention, the threads have two thread turns. Moreover, the invention relates to a screw for a pump of this type. On account of the uniform distribution of mass of the two-turn threads, the pump can be operated at a high rotational speed, with the result that the throughput of the pump is increased. 115-. (canceled)16. A screw pump comprising:two screws, each screw having a first thread and a second thread, each of which threads has two thread turns and extends from a suction side to a delivery side, the threads engage with one another to define a plurality of working chambers having a volume that decreases from the suction side to the delivery side; anda housing in which the screws are received, said housing having a first housing section and a second housing section in the region of each thread, there being a suction gap between the housing and the thread in the first housing section, and there being a minimum radial spacing between the housing and the thread in the second housing section.17. The screw pump of claim 16 , wherein the screws have a design which is symmetrical in the longitudinal direction between the two outer ends of the threads.18. The screw pump of claim 16 , wherein a radial spacing between the housing and the thread in the region of the suction gap is at least 50 times greater than the radial minimum spacing.19. The screw pump of claim 16 , wherein the extent of the suction gap in the circumferential direction corresponds to at least 10% of a circumference of the housing surrounding the screw in the first housing section.20. The ...

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Номер записи: 27
13-02-2020 дата публикации

Screw Compressor, Air Conditioning Apparatus and Refrigeration Apparatus

Номер: US20200049148A1
Автор: Li Rihua, Liu Hua, Xu Yungong, ZHANG Baoge, ZHANG Helong, Zhang Tianyi
Принадлежит:

Disclosed are a screw compressor, and a gas conditioning apparatus and a refrigeration apparatus including the screw compressor. The screw compressor includes a body (), in which a gas-supplement channel is provided, and the gas-supplement channel has at least two gas-supplement holes () communicated with a compression chamber. A number of the gas-supplement holes in the screw compressor is at least two. In a case that space available in the body () for disposing the gas-supplement holes () is limited, a hole diameter of each of the gas-supplement holes () is smaller. A larger number of gas-supplement holes () with smaller hole diameter are beneficial for reducing gas flow pulsation, thereby reducing noise in a gas-supplement process. 1. A screw compressor , comprising:{'b': '10', 'a body (), comprising a housing, in which a compression chamber is provided, and'}{'b': 10', '201, 'a gas-supplement channel, disposed in the body (), the gas-supplement channel having at least two gas-supplement holes () communicated with the compression chamber.'}220110. The screw compressor according to claim 1 , wherein the gas-supplement holes () are disposed along an axial direction of the body ().3201. The screw compressor according to claim 1 , wherein a shape of cross section of each gas-supplement hole () is any one of a circle claim 1 , an ellipse claim 1 , a round rectangle and a polygon.4201201. The screw compressor according to claim 1 , wherein a radial dimension of each of the gas-supplement holes () is not greater than 6 mm claim 1 , or the radial dimension of each of the gas-supplement holes () is not less than 2 mm.5201201. The screw compressor according to claim 4 , wherein a shape of cross section of each gas-supplement hole () is a circle claim 4 , and each of the gas-supplement holes () has a diameter of 5 mm.64020140. The screw compressor according to claim 1 , further comprising a male screw () and a female screw disposed in the compression chamber; wherein at ...

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Номер записи: 28
23-02-2017 дата публикации

Gas Compressor

Номер: US20170051743A1
Автор: SAKAI Kouhei, YABE Toshiaki
Принадлежит: Hitachi Industrial Equipment Systems Co., Ltd.

A bearing oil feeding amount is appropriately controlled with respect to specifications of a discharge pressure (bearing load) and a rotation speed. A gas compressor has: a compressor main body that compresses gas and has a rotor; a bearing for supporting the rotor onto a compressor main body casing; an oil case that stores a lubricating oil to be supplied to the bearing; a lubricating oil pipe through which the lubricating oil is circulated from the oil case to the bearing; an oil pump that pumps the lubricating oil from the oil case to the bearing via the lubricating oil pipe; a flow amount control means for adjusting an amount of lubricating oil that circulates through the lubricating oil pipe; an electric motor that supplies power to the rotor; an inverter that outputs a rotation frequency of the electric motor; a pressure sensor that detects the discharge pressure of the compressor main body; and a control unit that determines a lubricating oil supply amount to the bearing on the basis of the load on the bearing corresponding to the pressure detected by the pressure sensor and the rotation speed of the rotor corresponding to the rotation frequency output by the inverter, and that controls the flow amount control means on the basis of the lubricating oil supply amount. 1. A gas compressor comprising:a compressor main body having a rotor configured to compress gas;a bearing configured to support the rotor on a compressor main body casing;a storage part in which lubricating oil to be supplied to the bearing is stored;a lubricating oil pipe through which lubricating oil flows from an oil case to the bearing;an oil pump configured to pump lubricating oil from the oil case to the bearing through the lubricating oil pipe;flow amount control means configured to adjust an amount of lubricating oil flowing through the lubricating oil pipe;an electric motor configured to supply power to the rotor;an inverter configured to output a rotation frequency of the electric motor; ...

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Номер записи: 29
23-02-2017 дата публикации

DISCHARGE MUFFLER

Номер: US20170051745A1
Автор: Young Terence William Thomas
Принадлежит: J&E HALL LIMITED

A discharge muffler for a compressor is constructed as an inner duct extending inside an outer duct, the inner duct being open at each end and the outer duct being open only at the muffler inlet. The inner duct has a plurality of holes communicating with the outer duct, at least two of the holes being at different distances from the muffler outlet. 1. A discharge muffler for mounting to take discharge from a compressor , the muffler havinga muffler inlet for receiving the discharge and a muffler outlet for delivering the discharge, wherein the muffler comprises:an inner duct and an outer duct,the inner duct:extending inside the outer duct,being open at each end, andbeing provided with a plurality of holes that communicate with the outer duct, at least two of the holes being at different distances from the muffler outlet, andthe outer duct:being open at a first end in a region of the muffler inlet, andhaving a closure at a second end in a region of the muffler outlet.2. The muffler according to claim 1 , wherein the muffler is configured for use with the compressor and wherein the different distances of the at least two holes are determined in relation to wavelengths of discharge pulsations for the compressor in use at different respective speeds.3. The muffler according to claim 1 , wherein the muffler is configured for use with the compressor and wherein the compressor is a screw compressor.4. The muffler according to claim 3 , wherein the discharge is an oil/gas mixture.5. The muffler according to claim 1 , wherein the muffler inlet is provided by open ends of the inner and outer ducts and the muffler outlet is provided by an open end of the inner duct claim 1 , at the closure of the outer duct.6. The muffler according to claim 1 , wherein the closure of the outer duct at its second end is provided by a transverse wall extending inwardly from the outer duct onto the inner duct.7. The muffler according to claim 2 , wherein at least three holes are provided and said ...

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Номер записи: 30
10-03-2022 дата публикации

DIRECT DRIVE REFRIGERANT SCREW COMPRESSOR WITH REFRIGERANT LUBRICATED BEARINGS

Номер: US20220074415A1
Автор: QIU Yifan, Rockwell David M., Vaidya Amit
Принадлежит:

Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; wherein, for each rotor, the compressor includes: a plurality of bearing packs disposed within a respective plurality of bearing chambers; a working fluid disposed within each of the plurality of bearing chambers, the working fluid providing oil-free lubrication to the plurality of bearing packs; a plurality of bearing lubrication ports extending through the housing and into each of the plurality of bearing chambers, and configured for injecting the working fluid into each of the plurality of bearing chambers when the compressor is running. 1. A direct-drive refrigerant screw compressor , comprising:a housing;a compression chamber in the housing;a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile;wherein, for each rotor, the compressor includes:a plurality of bearing packs disposed within a respective plurality of bearing chambers;a working fluid disposed within each of the plurality of bearing chambers, the working fluid providing oil-free lubrication to the plurality of bearing packs;a plurality of bearing lubrication ports extending through the housing and into each of the plurality of bearing chambers, and configured for injecting the working fluid into each of the plurality of bearing chambers when the compressor is running.2. The compressor of claim 1 , wherein for each rotor:the plurality of bearing lubrication ports include a respective plurality flow control orifices.3. The compressor of claim 2 , wherein for each rotor:the plurality of bearing chambers include a forward bearing chamber and an aft bearing chamber; andthe plurality of bearing lubrication ports include a ...

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Номер записи: 31
01-03-2018 дата публикации

Screw Compressor

Номер: US20180058452A1
Автор: HARASHIMA Toshikazu, Nishimura Hitoshi, SADAKATA Kosuke, Takano Masahiko, YUKI Makoto
Принадлежит:

A screw compressor includes: a male rotor and a female rotor including a rotor tooth section that has multiple helical teeth, the male rotor and the female rotor rotating in engagement with each other; a casing including a main casing with a bore formed to accommodate the male rotor and the female rotor , and a discharge-side casing closing a discharge side of the bore ; and a discharge passage including a discharge port that opens in a rotational axis direction of the male rotor and the female rotor on a bore side surface of the discharge-side casing , compressed gas flowing from the discharge port circulating in the discharge passage . The male rotor and the female rotor are configured such that a discharge-side end surface of the rotor tooth section serves as a discharge-side distal end of the male rotor or the female rotor in the rotational axis direction. The discharge passage includes an enlarged flow passage section formed such that the enlarged flow passage section extends from the discharge port in the rotational axis direction of the male rotor and the female rotor and that a flow passage cross-sectional area is gradually enlarged from the discharge port to a downstream side in a compressed gas flow direction. 1. A screw compressor comprising:a male rotor and a female rotor each including a rotor tooth section that has a plurality of helical teeth, the male rotor and the female rotor rotating in engagement with each other;a casing including a main casing having a bore formed in such a manner as to accommodate the male rotor and the female rotor, and a discharge-side casing closing a discharge side of the bore; anda discharge passage including a discharge port that opens in a rotational axis direction of the male rotor and the female rotor on a surface of the discharge-side casing close to the bore, compressed gas flowing from the discharge port circulating in the discharge passage, whereinthe male rotor and the female rotor are each configured such that a ...

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Номер записи: 32
17-03-2022 дата публикации

SCREW COMPRESSOR

Номер: US20220082099A1
Автор: KAMIKAWA Masaaki, KANDA Masahiro, OKADA Shun
Принадлежит:

A screw compressor includes an internal-volume-ratio variable mechanism including a variable Vi valve configured to make a Vi value being an internal volume ratio variable. The screw compressor controls a position of the variable Vi valve in two stages. The position of the variable Vi valve when the Vi value is set to be large is set to attain a Vi value with which a compressor efficiency during operation under a predetermined high-load condition or a predetermined high-compression-ratio condition is equal to or higher than a set efficiency set in advance. 1. A screw compressor comprising an internal-volume-ratio variable mechanism including a variable Vi valve configured to make a Vi value being an internal volume ratio variable ,wherein the screw compressor controls a position of the variable Vi valve in two stages, andwherein, in an operation range of the compressor, the position of the variable Vi valve when the Vi value is set to be large is set to attain a Vi value with which a compressor efficiency during operation under a predetermined high-load condition or a predetermined high-compression-ratio condition is equal to or higher than a set efficiency set in advance.2. (canceled)3. The screw compressor of claim 1 ,wherein the position of the variable Vi valve when the Vi value is set to be small is set to attain a Vi value with which a value obtained by multiplying each of coefficients of performance at top one to top three operation loads having large weights in a primary annual performance factor calculated by applying weights for four operation loads, by the weight corresponding to the operation load is equal to or greater than a set value set in advance.4. The screw compressor of claim 1 ,wherein the internal-volume-ratio variable mechanism includesa piston coupled to the variable Vi valve; anda cylinder configured to house the piston,wherein inside of the cylinder is divided into two spatial chambers by the piston, andwherein the two spatial chambers are ...

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Номер записи: 33
11-03-2021 дата публикации

VARIABLE ECONOMIZER INJECTION POSITION

Номер: US20210071668A1
Автор: Johnson Jay H.
Принадлежит:

A compressor includes a bore, a rotor disposed within the bore, a compressor inlet, a compressor outlet and a compression chamber defined between the bore and the rotor. A volume of the compression chamber gradually reduces from the compressor inlet to the compressor outlet. An economizer is configured to fluidically connect to the compression chamber. The economizer is configured to inject a working fluid into the compression chamber at an injection position. The injection position is changeable according to a working condition of the compressor. 1. A single compressor , comprisinga bore,a rotor disposed within the bore,a shaft supporting the rotor, the shaft extending in an axial direction,a compressor inlet,a compressor outlet,a compression chamber defined between the bore and the rotor, wherein a working fluid in the compression chamber is compressed and flows from the compressor inlet to the compressor outlet, andan injection port having a variable injection position along the axial direction.2. The compressor according to claim 1 , wherein the injection port is configured to fluidically connect to an economizer to receive the working fluid from the economizer to the compression chamber.3. The compressor according to claim 1 , wherein the injection port is formed by a manifold claim 1 , the manifold is configured to fluidically connect an economizer and the compression chamber claim 1 , the manifold includesa manifold inlet,two or more manifold outlets disposed downstream of the manifold inlet, the manifold outlets disposed upstream of the compression chamber.4. The compressor according to claim 1 , further comprising a manifold fluidically connecting the economizer and the compression chamber claim 1 , the manifold further including claim 1 ,a manifold inlet,a plurality of manifold outlets disposed downstream of the manifold inlet, the manifold outlets disposed upstream of the compression chamber, wherein each manifold outlet is disposed at a different ...

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Номер записи: 34
19-03-2015 дата публикации

ADAPTOR FOR AN AIR COMPRESSOR AND AN AIR COMPRESSOR

Номер: US20150075656A1
Автор: Bosua Christopher John
Принадлежит:

The invention discloses an adaptor () for an air compressor (). Adaptor () includes a manifold () having an inlet () adapted to be connected to the air exhaust of at least one air tool device () having an air motor connected, in use, to the air compressor (). An outlet () is adapted to be connected, in use, to the air intake of the air compressor (), an air inlet () is open to ambient air and a valve mechanism () is adapted to, in use, close the air inlet () when a first predetermined pressure is reached by the air compressor (). 1. An adaptor for an air compressor , said adaptor including a manifold having an inlet adapted to be connected to the air exhaust of at least one air tool device having an air motor connected , in use , to said air compressor , and an outlet adapted to be connected , in use , to the air intake of said air compressor , an air inlet open to ambient air and a valve mechanism adapted to , in use , close said air inlet when a first predetermined pressure is reached by said air compressor.2. The adaptor as claimed in claim 1 , further including a pressure relief valve which opens to exhaust compressed air at a second predetermined pressure.3. The adaptor of claim 1 , wherein a plurality of said outlets are provided which are adapted to he connected to respective air intakes of a multiple cylinder air compressor.4. The adaptor of claim 1 , wherein said inlet is at one end of said manifold and said air inlet and said outlet are located on the side of said manifold.5. The adaptor of claim 1 , wherein said valve mechanism closes said air inlet at about 1 bar or 14.38 psi or higher claim 1 ,6. The adaptor of claim 1 , wherein said outlet is directly connected to the air injection device of said air compressor.7. An air compressor including a manifold having an inlet adapted to be connected to the air exhaust of at least one air tool device having an air motor connected claim 1 , in use claim 1 , to said air compressor claim 1 , and an outlet adapted ...

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Номер записи: 35
24-03-2022 дата публикации

SCREW COMPRESSOR AND CONTROL METHOD THEREFOR

Номер: US20220090601A1
Автор: Yu Zhengxiang, Zeng Fanfei, Zhang Fengzhi, Zhu Yu
Принадлежит:

A screw compressor (), comprising a screw rotor () and a spool valve (). The screw rotor () comprises a suction head end () and an exhaust tail end (). Gas is sucked in from the suction head end () and compressed gas is discharged from the exhaust tail end (). The spool valve () comprises a working side () for sealing a compression chamber of the screw rotor (). The working side () comprises a spool valve head end () and a spool valve tail end () and can do a reciprocating motion along the axis direction of the screw rotor (). When the spool valve () moves to a suction capacity adjusting position (), the spool valve head end () is located at the inner side of the suction head end () of the screw rotor (), and a suction capacity adjusting distance (D) is formed between the spool valve head end () and the suction head end () so that the suction capacity of the screw compressor is adjusted. The suction capacity of the screw compressor () can be adjusted by means of the spool valve (), so that the problem of motor temperature and exhaust gas temperature limits of conventional variable frequency screw sets is effectively solved and the operational range and the load regulation ability of the screw compressor are expanded. 1100. Screw compressor () , characterized in that it comprises:{'b': ['110', '111', '112', '110', '111', '112'], '#text': 'a screw rotor (), which comprises a suction head end () and an exhaust tail end (), wherein the screw rotor () is configured as such that it can suck in gas from the suction head end () and discharge compressed gas from the exhaust tail end (); and'}{'b': ['120', '125', '103', '110', '125', '121', '122', '121', '122', '111', '112', '110', '110', '120', '110'], '#text': 'a spool valve (), which comprises a working side () for sealing a compression chamber () of the screw rotor (), wherein the working side () comprises a spool valve head end () and a spool valve tail end (), the spool valve head end () and the spool valve tail end () ...

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Номер записи: 36
16-03-2017 дата публикации

SCREW COMPRESSOR

Номер: US20170074266A1
Автор: FUKUSHIMA Yosuke, Tsugihashi Kazuki
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A screw compressor includes compressor bodies, a motor disposed in a side of the compressor bodies, a gear box coupled to the compressor bodies and transmitting the drive force of the motor to a screw rotor, and a tubular coupling casing coupling the gear box and the motor and having horizontal axis. The coupling casing has a work hole in the horizontal direction. The work hole is used for maintaining a coupling accommodated in the coupling casing. The coupling casing has a rib extending in the up-down direction. It is thus possible to avoid reduction in the rigidity of the coupling casing with no cost increase, and to improve maintainability. 1. A screw compressor comprising:a compressor body compressing a fluid by a screw rotor;a motor disposed in a side of the compressor body and supplying a drive force to the compressor body;a gear box coupled to the compressor body and transmitting the drive force of the motor to the screw rotor;a tubular coupling casing coupling the gear box and the motor and having a horizontal axis;an input shaft coupled to the shaft of the motor and inputting the drive force of the motor to the gear box;a coupling accommodated in the coupling casing and coupling the input shaft and the shaft of the motor;a work hole in the horizontal direction provided in the coupling casing and used for maintaining the coupling; anda rib provided in the coupling casing and extending in the up-down direction.2. The screw compressor according to claim 1 , wherein the rib extends in the vertical direction.3. The screw compressor according to claim 1 , further comprising:the compressor body including a first compressor body and a second compressor body;a bull gear coupled to the input shaft so as to be accommodated in the gear box;a first pinion gear accommodated in the gear box, coupled to the shaft of the screw rotor of the first compressor body so that the axis of the first pinion gear is disposed above the axis of the bull gear, and engaging with the bull ...

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Номер записи: 37
18-03-2021 дата публикации

ELECTRONIC CAPACITY CONTROL VALVE FOR PORTABLE SCREW COMPRESSOR

Номер: US20210079915A1
Автор: BATDORFF Jonathan D., DODEN Ralph, VAUGHN Christian
Принадлежит:

A spiral valve and a screw compressor having a compressor housing and the spiral valve are provided. The spiral valve includes an actuator module disposed adjacent an exterior of the compressor housing, the actuator module includes an electric motor, a gearbox mechanically coupled to the electric motor to transmit torque from the electric motor, a shutter coupled to the gearbox to rotate in response to a transmitted torque from the electric motor, wherein the shutter is positioned to open and close one or more of a plurality of bypass ports formed in the compressor housing based on the rotational position of the shutter, wherein the compression length of the screw compressor may be controlled by controlling the opening and closing of the one or more bypass ports. 1. A spiral valve for a screw compressor having a compressor housing , the spiral valve comprising: an electric motor;', 'a gearbox mechanically coupled to the electric motor to transmit a torque from the electric motor;, 'an actuator module disposed adjacent an exterior of the compressor housing, the actuator module comprisinga shutter coupled to the gearbox to rotate in response to the transmitted torque from the electric motor, wherein the shutter is positioned to open and close one or more of a plurality of bypass ports formed in the compressor housing based on a rotational position of the shutter,wherein a compression length of the screw compressor may be controlled by controlling the opening and closing of the one or more bypass ports.2. The spiral valve of claim 1 , wherein the plurality of bypass ports includes a first bypass port and a second bypass port adjacent to the first bypass port;within a distance between the first bypass port and the second bypass port is less than 120% of a manufacturing tolerance of the compressor housing, and greater than or equal to 100% of the manufacturing tolerance of the compressor housing.3. The spiral valve of claim 1 , wherein the plurality of bypass ports ...

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Номер записи: 38
12-06-2014 дата публикации

Pump

Номер: US20140161643A1
Автор: Weatherley Richard
Принадлежит:

A gear pump includes a pump body which defines a cavity hole which holds a separate cavity body. The cavity body defines channels and a pump cavity holding a pair of gears. An inlet and outlet are connected to the channels. The separate cavity body may be manufactured separately and only this component needs to be manufactured to very accurate tolerances. 1. A pump system comprising:a pump body having a pair of gears located in a pump cavity and defining channels;an inlet and an outlet connected to the channels of the pump cavity; anda motor connected to a longitudinal shaft for driving the gears;wherein one of the gears is a free gear located in the pump cavity by the walls of the cavity, andthe pump body defines a cavity hole and the pump cavity and channels are defined in a cavity block mounted in the cavity hole, the cavity block being free to move laterally in the cavity hole.2. A pump system according to claim 1 , further comprising channels through the cavity block connecting the inlet and the outlet to the pump cavity claim 1 ,further comprising a shallow channel of thickness no greater than 30% of the thickness of the cavity block between the channels and the pump cavity to introduce fluid into the pump cavity and to extract fluid from the pump cavity.3. A pump system according to wherein the pump cavity and channels extend through the cavity block with constant cross section.4. A pump system according claim 1 , further comprising a pad having the same cross section as the cavity block claim 1 , the pad being mounted adjacent the cavity block within the cavity hole.5. A pump system according comprising:a drive unit enclosing the motor;a pump unit including the pump body, the cavity block in the pump body, the inlet, the outlet and the gears;wherein the pump unit is a removable pump unit which may be separated from the drive unit.6. A pump system according to claim 1 , wherein the pump unit further comprises a driven disk claim 1 , the driven disk being ...

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Номер записи: 39
24-03-2016 дата публикации

SCREW COMPRESSOR WITH ADJUSTABLE INTERNAL VOLUME RATIO

Номер: US20160084251A1
Автор: Zhu Yu
Принадлежит:

A screw compressor is provided having adjustable internal volume ratio, including a body and a male rotor, a female rotor and a slide valve configured inside the body, a groove being configured at one side of the male rotor and the female rotor, and the slide valve being configured inside the groove with the slide valve movable inside the groove from a first position corresponding to a minimum internal volume ratio to a second position corresponding to a maximum internal volume ratio. 1. A screw compressor having adjustable internal volume ratio , comprises a body and a male rotor , a female rotor and a slide valve inside said body , a groove being configured at one side of said male rotor and said female rotor , said slide valve being configured inside said groove , wherein said slide valve is able to move inside said groove from a first position corresponding to a minimum internal volume ratio to a second position corresponding to a maximum internal volume ratio.2. A screw compressor with adjustable internal volume ratio according to claim 1 , wherein said slide valve is able to move to a third position corresponding to a middle internal volume ratio between said first position and said second position.3. A screw compressor with adjustable internal volume ratio according to claim 2 , wherein said female rotor and said male rotor have a suction end and an exhaust end claim 2 , said slide valve has a first end and a second end claim 2 , with said first end next to said suction ends and said second end next to said exhaust ends claim 2 , and a radial exhaust port being configured at said second end of said slide valve.4. A screw compressor with adjustable internal volume ratio according to claim 3 , wherein said first position is a position where said first end extends outside said suction ends claim 3 , while said second end does not extend outside said exhaust ends claim 3 , said second position is a position where said first end is level with said suction ends ...

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Номер записи: 40
23-03-2017 дата публикации

WATER LUBRICATION TWIN-SCREW TYPE AIR COMPRESSOR

Номер: US20170082108A1
Автор: LIN Feng-Yung, TSAI MIN-JEN, TSENG CHIH-LUNG
Принадлежит:

A water lubrication screw type air compressor includes a compressor, an air-loop system and a water-loop system. The water-loop system comprises a water supply device, a first water-loop unit and a second water-loop unit. The water supply device comprises a first water-treatment device to modify the water quality and provide purified water. The first water-loop unit comprises a second water-treatment device to modify water quality and reduce the corrosion of metal components. The second water-loop unit comprises a water filter to remove the impurities in water and maintain the purity of cycling water. Therefore, the water-loop system in the present invention comprises multiple water-treatment devices and filters to maintain the water quality. The purified water ensures better cooling, lubrication and airproofing when injected into the compressor. 1. A water lubrication screw type air compressor comprising:a compressor, especially a water lubrication twin-screw type air compressor, the compressor having a compression chamber and an axial sealing inside, the compressor further comprising an inlet end, an outlet end, a first water-injection port and a second water-injection port, the first water-injection port connected to the axial sealing and the second water-injection port connected to the compression chamber;an air-loop system connected to the inlet end and the outlet end of the compressor, and the air-loop system comprising a moisture separator that connects to the outlet end of the compressor; anda water-loop system comprising a water supply device, a first water-loop unit and a second water-loop unit, the water supply device connecting the inlet end of the compressor and an external water source, and the water supply device comprising a first water-treatment device, the first water-loop unit connecting the moisture separator and the first water-injection port of the compressor, the first water-loop unit comprising a second water-treatment device, the second ...

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Номер записи: 41
05-05-2022 дата публикации

Single screw compressor

Номер: US20220136506A1
Автор: John Michael Roll, Maghmood Van Der Poll, Terence William Thomas Young
Принадлежит: J&E Hall Ltd

A single screw compressor comprises a main rotor and at least one gate rotor, a casing for the main rotor having a discharge port at a discharge end of the casing, and a slide slidable within a bore in the casing adjacent the main rotor. The slide has a cut-out (6) between first (2) and second (4) sealing parts of the slide, the slide is slidable between a high volume ratio position where the cut-out (6) is within the casing and provides a path to the discharge port, and a low volume ratio position where the slide is beyond the discharge end of the casing to provide a fixed discharge path in the bore of the casing.

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Номер записи: 42
07-04-2016 дата публикации

Refrigerant Compressor

Номер: US20160097572A1
Автор: Feller Klaus, Lörch Roni, Mikulic Tihomir
Принадлежит:

A refrigerant compressor particularly a rotary screw compressor comprising a compressor housing, a compressor element which is driven by a drive and is arranged in said compressor housing, at least one bearing unit for at least one element of the drive which comprises at least one bearing housing and at least one roller bearing that is arranged in the bearing housing. Lubricant is supplied by a lubricant distribution system to the bearing housing and a lubricant dispensing unit which comprises a filter holding chamber and a filter body that is arranged in the filter holding chamber is associated with the bearing housing. 1. Refrigerant compressor , particularly a rotary screw compressor , comprising a compressor housing , a compressor element which is arranged in the compressor housing and is driven by a drive , at least one bearing unit for at least one element of the drive which comprises at least one bearing housing and at least one roller bearing that is arranged in the bearing housing , a lubricant being supplied to the bearing housing by a lubricant distribution system , a lubricant dispensing unit comprising a filter holding chamber is associated with the bearing housing , and a filter body is arranged in the filter holding chamber.2. A refrigerant compressor in accordance with claim 1 , wherein the lubricant dispensing unit comprises an inlet channel which extends from the filter holding chamber to a lubricant chamber adjoining the roller bearing.3. A refrigerant compressor in accordance with claim 1 , wherein the lubricant dispensing unit comprises a throttle boring which is arranged between the filter holding chamber and a lubricant chamber adjoining the roller bearing.4. A refrigerant compressor in accordance with claim 1 , wherein the lubricant dispensing unit is integrated into the bearing housing.5. A refrigerant compressor in accordance with claim 4 , wherein the bearing housing comprises a housing element in which the lubricant dispensing unit is ...

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Номер записи: 43
01-04-2021 дата публикации

AIREND HAVING A LUBRICANT FLOW VALVE AND CONTROLLER

Номер: US20210095657A1
Автор: Borkowski Michael, Brewer Michael O., Dickinson Stephen, Hartman Ryan D., McGuinness Daniel, Sprinkle Kelton C.
Принадлежит:

A compressor system can include a lubricant injection system useful to supply lubricant to an airend. The compressor system can include a variable lubricant flow valve which can be regulated by a controller on the basis of operating conditions of the compressor system. In one form the compressor system also includes an oil separator and/or an oil cooler with or without a thermal control valve. The controller can have one or more modes of operation, including a mode in which the controller regulates the flow of lubricant to the airend to increase an internal flow area of the valve when the airend is operated at an unloaded or loaded condition. In some forms the controller can regulate the lubricant flow valve and/or the thermal control valve and/or the lubricant cooler. 1. An apparatus comprising:an airend having a male screw rotor configured to be complementarily rotated with a female screw rotor;a plurality of rolling element bearings structured to rotatingly support the male screw rotor and the female screw rotor when they are rotated to provide a flow of compressed fluid;a lubricant circuit having a conduit configured for the passage of a lubricant, the conduit configured to deliver lubricant to the plurality of rolling element bearings;a control valve in fluid communication with the conduit and structured to regulate a flow of lubricant through the conduit to the plurality of rolling element bearings, the control valve having a first position structured to deliver a first flow of lubricant to the plurality of rolling element bearings and a second position structured to deliver a second flow of lubricant to the plurality of rolling element bearings, the first flow greater than the second flow; anda controller configured to regulate the flow of lubricant through the control valve by activating the control valve to transition from the first position to the second position as a function of the operational state of the airend.2. The apparatus of claim 1 , wherein the ...

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Номер записи: 44
01-04-2021 дата публикации

SCREW COMPRESSOR ELEMENT AND MACHINE

Номер: US20210095667A1
Автор: DE BOCK Simon, DE ROOSTER Tom
Принадлежит:

Screw compressor element provided with a housing wherein a rotor is rotatably arranged by way of two bearings, respectively being a cylinder bearing () and a ball bearing (), each provided with an inner ring () and an outer ring (), separated by respectively cylindrical, or ball-shaped rolling elements () that contact the inner ring () and the outer ring () at the location of a raceway (), characterised in that, next to the respective raceway (), the inner rings () of the aforementioned bearings () have a smaller outer diameter (B) than the respective raceway () on the side facing the other bearing () and in that next; to the respective raceway (), the inner rings () of the bearings have a greater outer diameter (C, D) than the respective raceway () on the side facing away from the other bearing (). 136-. (canceled)373456789105678101111121211125634111234111256111134111278320411123434ababaaaaaaabbbbb. A screw compressor clement provided with a housing wherein a rotor is rotatably arranged by way of two bearings , respectively being a cylinder bearing () and a ball bearing () , each provided with an inner ring ( ,) and an outer ring ( , ) , separated by respectively cylindrical , or ball-shaped rolling elements ( , ) that contact the inner ring ( , ) and the outer ring ( , ) at the location of a raceway ( , , , ) , characterized in that next to the respective raceway ( , ) , the inner rings ( , ) of the aforementioned bearings ( , ) have a smaller outer diameter (B) than the respective raceway ( , ) on the side facing the other bearing ( , ) and in that next to the respective raceway ( , ) , the inner rings ( , ) of the bearings have a greater outer diameter (C , D) than the respective raceway ( , ) on the side facing away from the other bearing ( , ) , and wherein next to the respective raceway ( , ) , the outer rings ( , ) of the bearings ( , ) have a smaller inner diameter (D , G) than the respective raceway ( , ) both on the side facing the other bearing ( , ) and ...

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Номер записи: 45
05-04-2018 дата публикации

PULSATION DAMPER FOR COMPRESSORS

Номер: US20180094629A1
Автор: Banaszak Frank, Beinert Michael, Hauser Jan, Herlemann Sven, Kistner Daniel, Schulze-Beckinghausen Philipp
Принадлежит:

Devices, systems, and methods for pulsation dampers for compressors include outer and inner chambers forming parallel flow paths. 1. A damper for reducing pulsation from a compressor , the damper comprising:an outer chamber defining an outer cavity therein, the outer chamber being arranged to pass flow from an inlet to an outlet thereof,an inner chamber arranged within the outer cavity and defining an inner cavity therein, the inner chamber being arranged to pass flow from an inlet to an outlet thereof, anda number of partitions dividing the outer chamber into sections, the number of partitions each extending between the outer chamber and the inner chamber.2. The damper of claim 1 , wherein the sections of the outer chamber are each connected with each other near the inlet of the inner chamber to form an inlet manifold and are connected with each other near the outlet of the inner chamber to form an outlet manifold.3. The damper of claim 2 , wherein the sections of the outer chamber each extend between the respective inlet and outlet manifolds and define parallel flow paths.4. The damper of claim 2 , wherein the inlet of the inner chamber is connected with the inlet manifold and the outlet of the inner chamber is connected with the outlet manifold.5. The damper of claim 1 , wherein a housing forms at least a portion of the outer chamber claim 1 , the housing including a body and a cap fastened to the body to define at least a portion of the outer cavity.6. The damper of claim 5 , wherein the body forms a base portion of the outer chamber and forms the inner chamber.7. The damper of claim 6 , wherein the cap forms a head portion of the outer chamber.8. The damper of claim 5 , wherein the body forms a base portion of each of the number of partitions.9. The damper of claim 8 , wherein the cap forms a head portion of each of the number of partitions.10. The damper of claim 9 , wherein each base portion includes a fastener hole defined therethrough for receiving a ...

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Номер записи: 46
28-03-2019 дата публикации

ROTOR FOR A COMPRESSOR

Номер: US20190093655A1
Автор: Neel John Lloyd, Wu Tianshi, Xu Jian
Принадлежит:

A system includes a compressor configured to compress a vapor, or a vapor and liquid mixture, and a first rotor of the compressor disposed on a first shaft, where the first rotor includes a first plurality of pockets in a first body portion to form a first semi-hollow internal volume or a plurality of flanks and/or a first plurality of flutes on a first external surface of the first rotor, where the plurality of flanks or the first plurality of flutes comprises a first pitch to form first variable leads. 1. A system , comprising:a compressor configured to compress a vapor, or a vapor and liquid mixture; anda first rotor of the compressor disposed on a first shaft, wherein the first rotor comprises a first plurality of pockets in a first body portion to form a first semi-hollow internal volume of the first rotor.2. The HVAC&R system of claim 1 , wherein the first plurality of pockets forms a honeycomb claim 1 , webbed claim 1 , or gyroid structure claim 1 , and wherein the first plurality of pockets comprises gaps claim 1 , voids claim 1 , or spaces that do not includes solid material.3. The system of claim 1 , comprising a second rotor of the compressor disposed on a second shaft claim 1 , wherein the second rotor comprises a second plurality of pockets in a second body portion to form a second semi-hollow internal volume of the second rotor claim 1 , wherein the first rotor and the second rotor are configured to mesh with one another to compress the vapor claim 1 , or the vapor and liquid mixture claim 1 , in the compressor as the first shaft rotates in a first circumferential direction and the second shaft rotates in a second circumferential direction claim 1 , opposite the first circumferential direction4. The system of claim 3 , wherein the first plurality of pockets claim 3 , or the second plurality of pockets claim 3 , or both claim 3 , forms a honeycomb claim 3 , webbed claim 3 , or gyroid structure claim 3 , wherein the first and second plurality of pockets ...

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Номер записи: 47
28-03-2019 дата публикации

SUCTION SIDE SLIDE VALVE FOR A SCREW COMPRESSOR

Номер: US20190093657A1
Автор: Joseph Sam Palliathu, Pothabattula Lova Raju
Принадлежит:

The present disclosure is directed to a screw compressor system having a rotor housing with a pair of screw rotors rotatably supported within a compression chamber. A suction side slide valve is in fluid communication with an inlet to the compression chamber. The suction side slide valve is movable between a closed position and a fully open position to define a variable suction side inlet volume for controlling capacity of the compressor. 1. A compressor system comprising:a rotor housing;a compression chamber positioned within the housing, the compression chamber having a suction side and a discharge side;male and female screw rotors rotatably meshed together within the compression chamber, the screw rotors operable for compressing a working fluid;an inlet opening connected to the housing upstream of the compression chamber;a discharge port connected to the housing downstream of the compression chamber;an inlet port defined between the housing and the screw rotors on the suction side of the housing prior to fluid compression; anda suction side slide valve operably connected to the housing, the slide valve movable between first and second positions defined as fully closed and fully open to vary the size of the inlet port.2. The compressor system of claim 1 , wherein the slide valve is movable to an intermediate position at any location between the first and second positions.3. The compressor system of claim 2 , wherein the compressor operates at a full load claim 2 , a part load and unloaded when the slide valve is in the first position claim 2 , an intermediate position and the second position claim 2 , respectively.4. The compressor system of claim 1 , wherein the slide valve is defined by a top wall extending between first and second side walls and male and female rotor interface walls opposite of the top wall.5. The compressor system of further comprising:a guide channel formed in the top wall of the slide valve;a first slide groove formed in the first side of ...

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Номер записи: 48
28-03-2019 дата публикации

ROTARY SCREW COMPRESSOR WITH ATOMIZED OIL INJECTION

Номер: US20190093659A1
Автор: Coleman Ryan Patrick, Crum Daniel R.
Принадлежит:

The present disclosure is directed to a screw compressor system having a compressor housing with a pair of screw rotors rotatably supported within a compression chamber. A lubricant port is in fluid communication with the compression chamber. A nozzle insert having a longitudinal body extending between a first end and a second end can be positioned within the lubricant port. A swirl chamber formed by the nozzle insert or tangential flow into an offset lubricant port is configured to generate an atomized lubricant flow and discharge the atomized lubricant into the compression chamber. 1. A compressor comprising:a compressor housing;a compression chamber positioned within the compressor housing;male and female screw rotors rotatably meshed together within the compression chamber, the screw rotors operable for compressing a working fluid;a lubricant port in fluid communication with the compression chamber;a nozzle insert having a longitudinal body extending between a first end and a second end being positioned within the lubricant port; anda swirl chamber formed by the nozzle insert within the lubricant port, the nozzle insert configured to generate an angular flow velocity within the swirl chamber and discharge atomized lubricant into the compressor chamber.2. The compressor system of further comprising a discharge orifice formed with the lubricant port downstream of the nozzle insert claim 1 , the discharge orifice having a cross-sectional flow area that is smaller than a flow area of the lubricant port.3. The compressor system of claim 2 , wherein the discharge orifice discharges atomized lubricant into the compression chamber.4. The compressor system of claim 3 , wherein the discharged atomized lubricant impinges in a dispersed pattern onto one or both of the male and female screw rotors.5. The compressor system of claim 1 , wherein the nozzle insert includes a blade extending outward from an outer wall of the longitudinal body.6. The compressor system of claim 1 , ...

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Номер записи: 49
04-04-2019 дата публикации

Variable Volume Ratio Compressor

Номер: US20190101120A1
Автор: Kirill M. Ignatiev, Michael M. Perevozchikov, Roy J. Doepker
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell assembly, first and second scrolls, and a valve assembly. The shell assembly may define a discharge chamber. The first scroll may be disposed within the discharge chamber and may include a first end plate and a first spiral wrap. The first end plate may include a discharge passage in communication with the discharge chamber. The second scroll may be disposed within the discharge chamber and may include a second end plate and a second spiral wrap. The first and second spiral wraps define fluid pockets therebetween. The second end plate may include a port selectively communicating with one of the fluid pockets. The valve assembly may be mounted to the second scroll and may include a valve member that is movable between open and closed positions to allow and restrict communication between the port and the discharge chamber.

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Номер записи: 50
04-04-2019 дата публикации

SCREW COMPRESSOR WITH OIL INJECTION AT MULTIPLE VOLUME RATIOS

Номер: US20190101121A1
Автор: CHERIAN NOBIN, Coleman Ryan Patrick, Crum Daniel R.
Принадлежит:

The present disclosure is directed to a screw compressor system having a compressor housing with a pair of screw rotors rotatably supported within a compression chamber. Lubricant is injected into a compression chamber at a first volume ratio and at a second volume ratio greater than the first volume ratio to increase the sealing and lubrication between the screw rotors and rotor bores in the compressor housing as well as to increase heat transfer from a compressed working fluid in the compression chamber. 1. A compressor comprising:a compressor housing;a compression chamber extending between first and second ends of the housing;an inlet port upstream of the compression chamber;a discharge port downstream of the compression chamber;male and female screw rotors rotatably meshed together within the compression chamber, the screw rotors operable for compressing a working fluid;a compression pocket defined by a region in the compression chamber that is sealed from the inlet port and the discharge port;a volume ratio defined within the compression pocket, the volume ratio varying between 1.0 at an entrance region proximate the first end of the compression chamber and a design maximum volume ratio at an exit region proximate the second end of the compression chamber;a first lubricant injector configured to inject lubricant into the compression chamber at a first volume ratio; anda second lubricant injector configured to inject lubricant into the compression chamber at a second volume ratio, wherein the second volume ratio is larger than the first volume ratio.2. The compressor system of further comprising a third lubricant injector configured to inject lubricant into the compression chamber at a third volume ratio different from the first and second volume ratios.3. The compressor system of further comprising first and second injection ports extending through the housing at each of the first and second volume ratios.4. The compressor system of claim 3 , wherein the first ...

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Номер записи: 51
19-04-2018 дата публикации

Liquid Feeding Type Screw Compressor

Номер: US20180106254A1
Автор: CHIBA Kotaro, HARASHIMA Toshikazu, Nishimura Hitoshi, SADAKATA Kosuke, Tsuchiya Takeshi, Yamamoto Kentaro
Принадлежит:

There is provided a liquid feeding type screw compressor that can reduce size and weight and improve vibration insulation and sound insulation. A liquid feeding type screw compressor includes as components: a compressor main body; a motor driving the compressor main body; and a gas-liquid separator separating a liquid from a compressed air discharged from the compressor main body. The motor is arranged above the compressor main body. The gas-liquid separator is arranged below the compressor main body. A compressor main body casing constituting an inner cylindrical space forming a compression operation chamber together with the screw rotor and constituting the contour of the compressor main body and a casing constituting the contour of another component consist of an integrally molded single member. 1. A liquid feeding type screw compressor comprising as components:a compressor main body equipped with a screw rotor;a motor driving the compressor main body; anda gas-liquid separator separating a liquid from a compressed air discharged from the compressor main body, whereinthe motor is arranged above the compressor main body,the gas-liquid separator is arranged below the compressor main body, anda compressor main body casing constituting an inner cylindrical space forming a compression operation chamber together with the screw rotor and constituting a contour of the compressor main body and a casing constituting a contour of another component consist of an integrally molded single member.2. The liquid feeding type screw compressor according to claim 1 , wherein the compressor main body casing and a casing constituting a contour of the gas-liquid separator consist of an integrally-molded single member.3. The liquid feeding type screw compressor according to claim 1 , wherein the compressor main body casing and a motor casing constituting a contour of the motor consist of an integrally-molded single member.4. The liquid feeding type screw compressor according to claim 2 ...

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Номер записи: 52
10-07-2014 дата публикации

AIR REGULATOR, IN PARTICULAR FOR SCREW COMPRESSORS

Номер: US20140193284A1
Автор: STEPHAN ENRICO
Принадлежит: Rotorcomp Verdichter GmbH

An air regulator for compressor, in particular for a screw compressor, of the type that has an oil separator device comprising a pre-separator, is provided in a regulator housing containing a valve element which is spring-loaded on one side and can be actuated by means of a piston arrangement. A control device is operatively connected to the air regulator and includes a control piston which, depending on the pre-separator pressure, actuates the valve element of the air regulator in co-operation with a pre-control device in such a way that the regulator immediately and forcibly assumes the closed position upon starting the compressor, while the regulator assumes the open position in an unloaded initial state. 19-. (canceled)10. An air regulator for compressors , comprising:an oil separator apparatus with a pre-separator,a regulator housing,a valve element in said regulator housing, the valve element being spring-loaded on one side,a piston arrangement for actuating the valve element,pilot control apparatus, anda control apparatus containing a control piston,wherein the control piston, depending on a pre-separator pressure, in interaction with the pilot control apparatus actuates the valve element such that, when a compressor to which the regulator is connected is started, the regulator is immediately forced to assume a closed position, while in a base state the regulator assumes an open position.11. The air regulator as claimed in claim 10 , wherein the air regulator is adapted for being triggered in at least one of a pneumatic and electrical manner.12. The air regulator as claimed in claim 10 , wherein the air regulator is adapted for being triggered pneumatically claim 10 , and the control apparatus contains a check valve between control medium and pre-separator medium areas.13. The air regulator as claimed in claim 10 , wherein the pilot control apparatus comprises a valve magnet.14. The air regulator as claimed in claim 10 , wherein the control apparatus is ...

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Номер записи: 53
30-04-2015 дата публикации

POSITIVE DISPLACEMENT PUMP ASSEMBLY WITH MOVABLE END PLATE FOR ROTOR FACE CLEARANCE CONTROL

Номер: US20150118094A1
Автор: Ouwenga Daniel R., SMITH Brian T.
Принадлежит: EATON CORPORATION

A positive displacement pump assembly includes a rotor housing defining a rotor cavity, and an end plate configured to at least partially close one end of the rotor cavity. Rotors are supported on and fixed to rotor shafts and extend through the rotor cavity. A first pair of bearings fixing the rotor shafts to the end plate. A second pair of bearings fixes the rotor shafts to the rotor housing, preventing relative axial movement between the rotor shafts and the rotor housing. The end plate is axially movable with the rotor shafts when the rotor shafts vary in axial length due to thermal fluctuations so that changes in an axial clearance at end faces of the rotors are reduced. 120-. (canceled)21. A positive displacement pump assembly comprising:a rotor housing defining a rotor cavity;an end plate configured to at least partially close one end of the rotor cavity;rotor shafts extending through the rotor cavity;rotors supported on and fixed to the rotor shafts, the rotors having axial ends with end faces that face the end plate;a first pair of bearings rotatably mounting the rotor shafts to the end plate; anda second pair of bearings rotatably mounting the rotor shafts to the rotor housing;wherein the end plate is axially movable with the rotor shafts relative to the rotor housing when the rotor shafts vary in axial length due to thermal fluctuations to thereby reduce changes in an axial clearance at the end faces; and the end plate at least partially defines at least one inlet into the rotor cavity.22. The positive displacement pump assembly of claim 21 , wherein the rotor housing has a midportion that defines the rotor cavity and further includes an end portion fixed to the midportion and wherein a second axial clearance between the end plate and the end portion varies as the rotor shafts and the end plate move axially.23. The positive displacement pump assembly of claim 22 , wherein the rotor shafts extend through the end plate into the end portion; and further ...

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Номер записи: 54
03-05-2018 дата публикации

AIR COMPRESSOR SYSTEM INCLUDING A REFRIGERATED DRYER AND A CONDENSATE HARVESTER AND WATER SUPPLY

Номер: US20180119995A1
Автор: Keshavan Raghavan Mahesh Kumar
Принадлежит:

An air compressor system useful for supplying a stream of compressed air for an end user is disclosed which includes a refrigerated dryer useful to remove moisture and harvest it from the compressed air. The refrigerated dryer includes an evaporator and a condenser, where the evaporator is useful to produce the moisture from the compressed air. The air compressor system includes an expansion tank which collects the harvested moisture from the evaporator and a supply line from a utility water supply, both of which can be used to provide liquid to a condenser of the dryer. A valve is used to bring together either or both of the condensate from the expansion tank and water from the utility water supply. The valve includes an outlet that provides liquid to a condenser of the dryer. 1. An apparatus comprising:An gas compressor system having a compressor structured to rotate a mechanical compression member and produce a stream of compressed wet gas, the gas compressor system having a refrigerated dryer configured to dry the wet compressed gas by removing condensable vapor, the refrigerated dryer including a dryer compressor to compress a refrigeration fluid, a condenser to receive compressed refrigerated fluid, and an evaporator to exchange heat between the wet compressed gas and the refrigeration fluid, the gas compressor system including an expansion tank to receive an inflow of a condensate produced from the condensable vapor as a result of operation of the evaporator, the expansion tank having an outlet in fluid communication with a valving member having a first inflow passage to receive condensate from the expansion tank and water from a utility water supply, wherein the valving member is configured to flow one or both of the condensate and water to a condenser pump which provides one or both of the condensate and water to the condenser.2. The apparatus of claim 1 , wherein a check valve is disposed intermediate with and in fluid communication with both the expansion ...

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Номер записи: 55
25-08-2022 дата публикации

Dual-Stage Compressor, Control Method Thereof and Air Conditioning Unit

Номер: US20220268280A1
Автор: BI Yushi, Li Rihua, Liu Hua, Long Zhongkeng, Wu Xiaokun, Zhang Zhiping
Принадлежит:

The present disclosure relates to a dual-stage compressor, a control method thereof, and an air conditioning unit. The dual-stage compressor includes a low-pressure stage; a high-pressure stage connected in series with the low-pressure stage; and a volume ratio adjustment mechanism arranged at the high-pressure stage and configured to adjust the volume ratio of refrigerant compression at the high-pressure stage. When the final compression pressure of the compressor is lower or greater than the exhaust pressure, the volume ratio adjustment mechanism is operated to increase or reduce the volume ratio of refrigerant compression at the high-pressure stage so that the final compression pressure of the compressor is equal to the exhaust pressure, and overcompression and undercompression are improved to adapt to changes in external conditions, increase the energy efficiency of the compressor, and reduce the noise of the compressor. 1. A dual-stage compressor , comprising:a low-pressure stage;a high-pressure stage connected in series with the low-pressure stage; anda volume ratio adjustment mechanism arranged at the high-pressure stage and configured to adjust the volume ratio of refrigerant compression at the high-pressure stage.2. The dual-stage compressor according to claim 1 , wherein the compressor is a screw compressor claim 1 , and the volume ratio adjustment mechanism comprises a first slide valve adjustment mechanism configured to adjust an output position of an exhaust port at the high-pressure stage.3. The dual-stage compressor according to claim 1 , further comprising a capacity adjustment mechanism arranged at the low-pressure stage and configured to adjust an output capacity of refrigerant compression at the low-pressure stage.4. The dual-stage compressor according to claim 3 , wherein the capacity adjustment mechanism comprises a second slide valve adjustment mechanism configured to adjust the output capacity of a bypass port at the low-pressure stage.5. The ...

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Номер записи: 56
11-05-2017 дата публикации

OIL SEAL APPARATUS AND BLOWER COMPRISING THE SAME

Номер: US20170130719A1
Автор: JANG Hong-sun
Принадлежит:

An oil seal apparatus and a blower including the same are disclosed. The oil seal apparatus and the blower can assemble a body pipe quickly regardless of assembling direction of the body pipe when assembling the body pipe by forming a plurality of oil return holes, i.e., forming more than four or five oil return holes at upper portion, lower portion, left portion, and right portion of an outboard surface of the body pipe. The oil seal apparatus may be mounted in a shaft through-hole formed at an oil box of a blower. The oil seal apparatus may include: a body pipe mounted on a rotation shaft penetrating through the shaft through-hole and provided with a step portion formed at an exterior circumference of the body pipe; at least one collecting groove for collecting oil which is formed at an interior circumference of the body pipe; and more than four oil return holes evenly spaced from each other, formed at the body pipe slantedly from an inboard side to an outboard side, and communicating with the collecting groove. 1. An oil seal apparatus which is mounted in a shaft through-hole formed at an oil box of a blower , the oil seal apparatus comprising:a body pipe mounted on a rotation shaft penetrating through the shaft through-hole and provided with a step portion formed at an exterior circumference of the body pipe;at least one collecting groove for collecting oil which is formed at an interior circumference of the body pipe; andmore than four oil return holes evenly spaced from each other, formed at the body pipe slantedly from an inboard side to an outboard side, and communicating with the collecting groove.2. The oil seal apparatus of claim 1 , further comprising a bearing spacer mounted between the body pipe and the rotation shaft claim 1 , and wherein a spiral groove is formed on an interior circumference of the bearing spacer contacting with the body pipe and causes the oil to flow therethrough.3. The oil seal apparatus of claim 1 , wherein a staying groove of ...

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Номер записи: 57
03-06-2021 дата публикации

COMPRESSOR

Номер: US20210164471A1
Автор: HONDA Kazunari, Kobayashi Hiroyuki, NAMIKI Ken, SAKAKIBARA Kengo, Yamamoto Shinya
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A compressor includes a rotary shaft, a front rotor including a front rotor surface, an intermediate wall portion including a first wall surface opposed to the front rotor surface in an axial direction, and a vane that is inserted into a vane groove formed in the intermediate wall portion and is moved in the axial direction with rotation of the front rotor. The vane includes a first vane end that is an end in the axial direction and contacts the front rotor surface. The first vane end is curved so as to be convex toward the front rotor surface and extends in the direction perpendicular to the axial direction. The front rotor surface includes a front curving surface curved in the axial direction so as to be displaced in the axial direction in accordance with its angular position. 1. The compressor according to claim 10 , wherein a concave surface curved in the axial direction so as to be concave toward the wall surface, and', 'a convex surface curved in the axial direction so as to be convex toward the wall surface,, 'the curving surface includes'}the concave surface includes a concave surface radially inner end and a concave surface radially outer end as opposite ends in the radial direction,in the concave surface, a radius of curvature of the concave surface radially inner end in the axial direction is smaller than a radius of curvature of the concave surface radially outer end,the convex surface includes a convex surface radially inner end and a convex surface radially outer end as opposite ends in the radial direction, andin the convex surface, a radius of curvature of the convex surface radially inner end in the axial direction is smaller than a radius of curvature of the convex surface radially outer end.2. The compressor according to claim 1 , whereinthe vane includes a tabular shape having a thickness in a direction perpendicular to both the axial direction and the longitudinal direction of the vane end, andthe thickness of the vane is set such that the vane ...

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Номер записи: 58
17-05-2018 дата публикации

CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR

Номер: US20180135610A1
Автор: Hamada Hiroshi, Irie Kazuhiro, Tonegawa Masaaki
Принадлежит:

A control valve includes: a first valve to control a flow rate of refrigerant flowing from a discharge chamber to a control chamber of a compressor; a second valve to control a flow rate of the refrigerant flowing from the control chamber to a suction chamber; a solenoid to generate a drive force in a first valve closing direction and a second valve opening direction; a biasing member to generate a biasing force in an first valve opening direction and a second valve closing direction; and a pressure sensing part to sense a pressure in the suction chamber or the control chamber, and generate a counterforce against the drive force. A state in which both of the first and second valves are open is present during an increase in the current supplied to the solenoid from zero to an upper limit current value, and an increase rate of an opening degree of the first valve is increased during a decrease in the current supplied to the solenoid, a predetermined lower limit current value being an inflection point of the increase. 1. A control valve applicable to a variable displacement compressor having a suction chamber , a discharge chamber , and a control chamber and having a discharge capacity varied by regulating a pressure in the control chamber , the control valve comprising:a first valve provided between the discharge chamber and the control chamber, to control a flow rate of refrigerant flowing from the discharge chamber to the control chamber;a second valve and a third valve provided parallel to each other between the control chamber and the suction chamber, to control a flow rate of the refrigerant flowing from the control chamber to the suction chamber;a solenoid to generate a drive force in a closing direction of the first valve and an opening direction of the second valve depending on an amount of supplied current; anda pressure sensing part to sense a pressure in the suction chamber or the pressure in the control chamber, and generate a counterforce against the ...

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Номер записи: 59
30-04-2020 дата публикации

Rotary compressors with variable speed and volume control

Номер: US20200132074A1
Автор: Daniel R. Crum, Gordon Powell, JR., Jay H. Johnson, John R. Sauls
Принадлежит: Trane International Inc

Systems and methods are used to control operation of a rotary compressor of a refrigeration system to improve efficiency by varying the volume ratio and the speed of the compressor in response to current operating and load conditions. The volume of the axial and/or radial discharge ports of the compressor can be varied to provide a volume ratio corresponding to operating conditions. In addition, permanent magnet motors and/or control of rotor tip speed can be employed for further efficiency gains.

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Номер записи: 60
10-06-2021 дата публикации

Screw compressor with external motor rotor

Номер: US20210172439A1
Автор: Amit Vaidya
Принадлежит: Carrier Corp

A screw compressor includes a housing, a first rotor rotatable about a first axis relative to the housing, and a second rotor rotatable about a second axis relative to the housing. The second rotor is enmeshed with the first rotor. A motor is embedded within the first rotor such that the motor is coaxial with the first axis.

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Номер записи: 61
15-09-2022 дата публикации

COMPRESSOR AND REFRIGERATION SYSTEM

Номер: US20220290672A1
Автор: Gao Bin, GAO Qiang, LI Gaimin, Peng Yanhai
Принадлежит: GUANGDONG MEIZHI COMPRESSOR CO., LTD.

A compressor and a refrigeration system are provided. The compressor has a shell, an air cylinder assembly and a pressure relief device. The shell has a containing cavity. The air cylinder assembly is disposed in the containing cavity, and has an air suction cavity and a pressure relief channel. The pressure relief channel communicates with the air suction cavity and the containing cavity, and has a pressure relief opening. The pressure relief device is connected with the air cylinder assembly. The pressure relief device moves in the axis direction of the pressure relief channel, so as to open or close the pressure relief opening. 1. A compressor comprising:a shell, wherein the shell comprises a containing cavity;an air cylinder assembly disposed in the containing cavity, wherein the air cylinder assembly comprises an air suction cavity and a pressure relief channel, wherein the pressure relief channel communicates with the air suction cavity and the containing cavity, wherein the pressure relief channel comprises a pressure relief opening; anda pressure relief device connected with the air cylinder assembly, wherein the pressure relief device moves in an axis direction of the pressure relief channel to open or close the pressure relief opening;wherein the through-flow area of the pressure relief device satisfies: 0 Подробнее

Номер записи: 62
07-05-2020 дата публикации

WATER LUBRICATION TWIN-SCREW AIR COMPRESSING SYSTEM

Номер: US20200141409A1
Автор: LIN Feng-Yung, TSAI MIN-JEN, TSENG CHIH-LUNG
Принадлежит:

A water lubrication screw type air compressor includes a compressor, an air-loop system and a water-loop system. The water-loop system includes a water supply device, a first water-loop unit and a second water-loop unit. The water supply device includes a first water-treatment device to modify the water quality and provide purified water. The first water-loop unit includes a second water-treatment device to modify water quality and reduce the corrosion of metal components. The second water-loop unit includes a water filter to remove the impurities in water and maintain the purity of cycling water. Therefore, the water-loop system in the present disclosure includes multiple water-treatment devices and filters to maintain the water quality. The purified water ensures better cooling, lubrication and air proofing when injected into the compressor. 1. A water lubrication twin-screw air compressing system comprising:a compressor, being a water lubrication air compressor having a pair of screw rotors disposed therein, the pair of screw rotors being complementary male rotor and female rotor to compress air, wherein the compressor includes a compressor housing formed with a compression chamber therein, an axial sealing device disposed in the compression chamber, a first water-injection port, and a second water-injection port; wherein the first water-injection port connects to the axial sealing device, and the second water-injection port connects to the compression chamber; an air filter;', 'an air valve fluidically connected to the air filter;', 'a first check valve fluidically connected to the air valve and the compressor, so as to prevent air from flowing backward from the compressor to the air valve;', 'a moisture separator for separating air from moisture, fluidically connected to the air valve and the compressor to receive an air-water mixture from the compressor; and', 'a first control valve fluidically connected between the air valve and the moisture separator, ...

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Номер записи: 63
22-09-2022 дата публикации

VARIABLE VOLUME RATIO SCREW COMPRESSOR

Номер: US20220299031A1
Автор: SCALA Alberto
Принадлежит:

A screw compressor, method of operating, and refrigerant circuit are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet that compresses the working fluid. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. A valve assembly is configured to vary a location at which the compression mechanism compresses the working fluid, the valve assembly being disposed to modify a suction location of the screw compressor. 1. A screw compressor , comprising:a suction inlet that receives a working fluid to be compressed;a compression mechanism fluidly connected to the suction inlet that compresses the working fluid, the compression mechanism including one or more rotors;a rotor housing containing the one or more rotors;a discharge outlet fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism; and a suction port of the compression mechanism is closer to a discharge end of the rotor housing in the first position than in the second position, and', 'a longitudinal length along which the compression mechanism compresses the working fluid is longer in the second position than in the first position., 'a rotor sealing member configured to move relative to the rotor housing between a first position and second position, wherein'}2. The screw compressor of claim 1 , wherein the suction port is an axial suction port claim 1 , and the location at which the compression mechanism receives the working fluid is variable for the axial suction port.3. The screw compressor of claim 1 , wherein the rotor sealing member is part of a slide piston assembly configured to move in a direction that is parallel to a longitudinal axis of the compression mechanism claim 1 , and the second position disposes the rotor sealing ...

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Номер записи: 64
24-06-2021 дата публикации

SCREW COMPRESSOR

Номер: US20210190069A1
Автор: Miyamura Harunori, UENO Hiromichi
Принадлежит:

A screw compressor includes a casing having an outer peripheral wall, and a compression mechanism. The compression mechanism includes a screw rotor with helical grooves, a gate rotor with a plurality of gates meshing with the helical grooves, and a cylinder housing the screw rotor. The compression mechanism is disposed inward of the outer peripheral wall. The outer peripheral wall has a discharge passage through which a fluid compressed in the compression mechanism flows. The discharge passage includes an inner peripheral passage formed along an outer peripheral surface of the cylinder, and an outer peripheral passage formed along the inner peripheral passage and the outer peripheral wall. The inner and outer peripheral passages are formed so that the fluid compressed in the compression mechanism sequentially flows through the inner and outer peripheral passages. 1. A screw compressor , comprising:a casing having an outer peripheral wall; and a screw rotor provided with helical grooves,', 'a gate rotor including a plurality of gates meshing with the helical grooves, and', 'a cylinder housing the screw rotor,, 'a compression mechanism including'}the compression mechanism being disposed inward of the outer peripheral wall,the outer peripheral wall having a discharge passage formed therein through which a fluid compressed in the compression mechanism flows, and an inner peripheral passage formed along an outer peripheral surface of the cylinder to extend in an axial direction of the cylinder, and', 'an outer peripheral passage formed along the inner peripheral passage and the outer peripheral wall to extend in the axial direction of the cylinder,', 'the inner peripheral passage and the outer peripheral passage being formed so that the fluid compressed in the compression mechanism sequentially flows through the inner peripheral passage and the outer peripheral passage., 'the discharge passage including'}2. The screw compressor of claim 1 , whereinthe discharge passage ...

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Номер записи: 65
24-06-2021 дата публикации

COMPRESSOR STOP VALVE AND ASSOCIATED SYSTEM

Номер: US20210190071A1
Автор: Borkowski Michael, Kaszuba Eric M., Taylor Christopher
Принадлежит:

A compressor system is provided that includes a contact cooled compressor and a coolant separator. The coolant separator is used to remove coolant fluid from a compressed flow stream produced by the contact cooled compressor during its operation. The coolant separator routes the removed coolant fluid back to the contact cooled compressor for further use. In some forms the coolant fluid is cooled prior to delivery back to the compressor. A stop valve can be provided in the coolant fluid return line to halt the flow of the fluid. A pressure sensitive member can be disposed to sense pressure of the coolant fluid that has been routed past the stop valve. Operation of the compressor can be changed as a result of the sensed pressure from the pressure sensitive member. Information from a temperature sensitive member can also be used to change operation of the compressor. 121.-. (canceled)22. A compressor assembly comprising:a compressor configured to raise a pressure of a compressible fluid, the compressor configured to employ oil within the compressor to lubricate at least one compressor elements;an oil reservoir coupled with the compressor via a conduit, the conduit configured to convey oil under pressure to the compressor from the oil reservoir;a controller configured to control operation of the compressor; anda temperature sensor in thermal communication with oil conveyed by the conduit to determine a temperature of the oil, the temperature determined by the temperature sensor being biased to provide an estimated temperature,wherein the controller is configured to cause operation of the compressor to halt when the controller determines that the estimated temperature exceeds an operational threshold temperature.23. The compressor assembly as recited in claim 22 , further comprising a valve coupled with the conduit between the oil reservoir and the compressor claim 22 , the valve operable to stop the flow of oil from the oil reservoir to the compressor.24. The compressor ...

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Номер записи: 66
15-06-2017 дата публикации

GAS COOLER

Номер: US20170167797A1
Автор: HAGIHARA Koji, Hirata Kazuya, KATAOKA Yasuto, TOMIOKA Yusuke
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A gas cooler includes a pair of seal plates and a pair of first support ribs. The individual seal plate has a stepped surface which extends in a direction that a cooling portion is inserted into a casing. The individual first support rib supports the stepped surface. With the configuration where the stepped surface is supported by the first support rib, the inside of the casing is partitioned into an upstream-side space communicated with an introducing port and a downstream-side space communicated with a discharging port. 1. A gas cooler comprising:a casing having an opening;an introducing port through which a gas is introduced into the inside of the casing;a discharging port through which the gas is discharged from the inside of the casing;a cooling portion which is inserted into the casing through the opening, is housed in the casing, cools the gas, and maintains air-tightness against the opening;a pair of seal plates which is disposed in the cooling portion, and has portions to be supported which extend in a direction that the cooling portion is inserted; anda pair of support portions which is provided for supporting the portions to be supported, the support portions being disposed on an inner surface of the casing such that the pair of support portions projects into the inside of the casing and extends in the insertion direction,wherein the portions to be supported are placed on the support portions so as to partition the inside of the casing into an upstream-side space communicated with the introducing port and a downstream-side space communicated with the discharging port.2. The gas cooler according to claim 1 , wherein the casing has both side wall portions which opposedly face each other as viewed in the insertion direction claim 1 , andwherein the pair of support portions is disposed on inner surfaces of said both side wall portions.3. The gas cooler according to claim 1 , wherein the casing has a bottom wall portion claim 1 , andwherein the pair of support ...

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Номер записи: 67
29-09-2022 дата публикации

TWO-STAGE SCREW COMPRESSOR AND AIR CONDITIONING SYSTEM

Номер: US20220307502A1
Автор: WU HU
Принадлежит:

A two-stage screw compressor and an air conditioning system. The two-stage screw compressor includes: a housing with an intake port and an exhaust port provided thereon; a low-pressure stage screw set axially arranged in the housing and connected to the intake port; a high-pressure stage screw set axially arranged in the housing and connected to the exhaust port; a drive motor axially arranged in the housing; and a transmission gear set for simultaneously transmitting a torque provided by the drive motor to the low-pressure stage screw set and the high-pressure stage screw set; wherein, the drive motor, the low-pressure stage screw set and the high-pressure stage screw set are axially arranged on the same side of the transmission gear set. 1. A two-stage screw compressor , comprising:a housing with an intake port and an exhaust port provided thereon;a low-pressure stage screw set axially arranged in the housing and connected to the intake port;a high-pressure stage screw set axially arranged in the housing and connected to the exhaust port;a drive motor axially arranged in the housing; anda transmission gear set for simultaneously transmitting a torque provided by the drive motor to the low-pressure stage screw set and the high-pressure stage screw set;wherein, the drive motor, the low-pressure stage screw set and the high-pressure stage screw set are axially arranged on the same side of the transmission gear set.2. The two-stage screw compressor according to claim 1 , wherein the low-pressure stage screw set and the high-pressure stage screw set are arranged on the same side of a vertical plane where the axis of the drive motor is located.3. The two-stage screw compressor according to claim 2 , wherein the low-pressure stage screw set is arranged at a lower part of the high-pressure stage screw set.4. The two-stage screw compressor according to claim 1 , wherein the transmission gear set comprises:a driving gear connected to the drive motor;a low-pressure stage ...

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Номер записи: 68
01-07-2021 дата публикации

MULTI-STAGE RESONATOR FOR COMPRESSOR

Номер: US20210199114A1
Автор: McCormick Duane C., Reba Ramons A., Rockwell David M., Wilson Mark W.
Принадлежит:

A compressor has an inlet port and a discharge port. The discharge port communicates into a resonator chamber. The resonator chamber includes a first stage resonator array and a second stage resonator array downstream of the first stage resonator array with a connecting passage intermediate the first and second resonator array. Each of the resonator arrays includes a pair of spaced resonator arrays sub-portions, with each of the sub-portions including a plurality of cells extending into a housing member, and have a bottom wall and an open outer wall communicating with the flow passage, with a plurality of orifices extending into each of the cells. The orifices have a smaller diameter than a hydraulic diameter of the cells. 1. A compressor comprising:a compressor having an inlet port and a discharge port, said discharge port communicating into a resonator chamber, said resonator chamber including a first stage resonator array and a second stage resonator array downstream of said first stage resonator array with a connecting passage intermediate said first and second resonator array and an exit port leaving the resonator chamber, a flow passage communicates the discharge port to the exit port, and passes through the first and second resonator arrays; andeach of said first and second resonator arrays including a pair of spaced resonator arrays sub-portions, with each of said sub-portions including a plurality of cells extending into a housing member, and having a bottom wall and an open outer wall communicating with the flow passage, with a plurality of orifices extending into each of said cells, with said orifices having a smaller diameter than a hydraulic diameter of said cells.2. The compressor as set forth in claim 1 , wherein said orifices are formed in a perforated plate that encloses said plurality of cells.3. The compressor as set forth in claim 2 , wherein said connecting passage has a non-circular flow area claim 2 , at least over a portion of its length ...

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Номер записи: 69
18-09-2014 дата публикации

Infinitely variable vi in screw compressors using proportional valve control

Номер: US20140260414A1
Автор: Paul Nemit, Jr.
Принадлежит: Johnson Controls Technology Co

A variable-efficiency screw compressor for use in a closed-loop system configured to perform refrigeration is provided. The variable-efficiency screw compressor includes an inlet port to draw refrigerant into the variable-efficiency screw compressor, one or more rotating screws in fluid communication with the inlet port to compress the refrigerant, forming a compressed refrigerant, a discharge port in fluid communication with the rotating screws to receive the compressed refrigerant and discharge the refrigerant, wherein the discharge port includes an adjustable piston movable within the discharge port from a first position in which volume is higher to a second position in which volume is lower, the adjustable piston arranged and disposed to adjust volume of the discharge port in response to a change in demand.

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Номер записи: 70
23-06-2016 дата публикации

ROTARY PUMP WITH A COMPACT SETTING STRUCTURE FOR ADJUSTING THE DELIVERY VOLUME

Номер: US20160177948A1
Автор: Braasch Holger
Принадлежит:

A rotary pump exhibiting an adjustable specific delivery volume, the rotary pump including a housing featuring a delivery chamber for a fluid feed; a delivery rotor in the delivery chamber; a setting structure which surrounds the delivery rotor, a spring exerting a spring force which acts on the setting structure in a first setting direction; a setting pressure chamber for applying a setting pressure of a setting fluid, which acts counter to the spring force in a second setting direction, to the setting structure; and a housing abutment, wherein the setting structure includes: a recess on a circumference; and a counter abutment for the housing abutment in the recess. 1. A rotary pump exhibiting an adjustable specific delivery volume said rotary pump comprising:(a) a housing featuring a delivery chamber into which an inlet and an outlet for a fluid feed;(b) a delivery rotor which can be rotated about a rotational axis in the delivery chamber;(c) a setting structure which surrounds the delivery rotor and forms delivery cells with the delivery rotor, in order to deliver the fluid from the inlet to the outlet, and which can be rotationally moved, in order to perform a setting movement, which adjusts the specific delivery volume of the rotary pump, relative to the delivery rotor in a first setting direction and in a second setting direction counter to the first setting direction;(d) a spring device which is supported in a spring counter bearing of the setting structure, in order to exert a spring force which acts on the setting structure in the first setting direction;(e) a setting pressure chamber for applying a setting pressure of a setting fluid, which acts counter to the spring force, to the setting structure;(f) and a housing abutment which cannot be moved relative to the housing and which limits a movement of the setting structure in at least one of the setting directions by an abutting contact with the setting structure,{'b': '8', '(g) wherein the setting ...

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Номер записи: 71
23-06-2016 дата публикации

SECTIONAL SEALING SYSTEM FOR ROTARY SCREW COMPRESSOR

Номер: US20160177951A1
Автор: Beinert Michael, Hauser Jan, Hutterman Dieter
Принадлежит:

A sectional sealing system for water-spray type screw rotor compressor that is configured to prevent the intermixing of coolant and working fluid from a compression chamber with lubricant used to lubricate at least a bearing system of a rotor. The sealing system may include suction side and discharge side sealing portions that are positioned about first and second shafts, respectively, of the rotor. the suction side sealing portion may include a first seal, a first labyrinth seal, and a second labyrinth seal, the first seal being in proximity to a suction side of the compression chamber. The discharge side sealing portion may include a plurality of first seals, a second seal, a first labyrinth seal, and a second labyrinth seal, the plurality of first seals of the discharge side sealing portion being in proximity to a discharge side of the compression chamber. 1. A sectional sealing system positioned about a shaft of a screw compressor rotor and configured to prevent working fluid and coolant from leaking from a compression chamber and intermixing with lubricant from a bearing system , the sectional sealing system comprising:a first discharge side seal section having a plurality of seals configured to inhibit the flow of working fluid and coolant from a discharge side of the compression chamber;a second discharge side seal section having a plurality of seals configured to inhibit the flow of working fluid and coolant from a discharge side of the compression chamber;a second discharge side seal section positioned downstream from the first discharge side seal section, the second discharge side seal section including a seal configured to inhibit the flow of working fluid and coolant that flowed past the first discharge side seal section;a third discharge side seal section positioned downstream from the second discharge side seal section, the third discharge side seal section including a labyrinth seal configured to inhibit the flow of working fluid and coolant that ...

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Номер записи: 72
06-06-2019 дата публикации

Fluid Machine

Номер: US20190170143A1
Автор: CHIBA Kotaro, HARASHIMA Toshikazu, KANADA Minako, KAWAI Ryoji, KOTANI Masanao, SADAKATA Kosuke, Takano Masahiko, Tsuchiya Takeshi, Yamamoto Kentaro
Принадлежит:

Provided is a fluid machine configured such that liquid supplied to a working chamber from the outside of the fluid machine is dispersed extensively in the working chamber. This fluid machine is constituted of a screw rotor and a casing for accommodating the screw rotor and is provided with a liquid supply section for supplying liquid into a working chamber from the outside. The liquid supply section is configured so that liquid is dispersed in the longitudinal direction of the tooth groove of the screw rotor rather than in the width direction thereof. 1. A fluid machine including a screw rotor and a casing for accommodating the screw rotor , and comprising a liquid supply section for supplying liquid into a working chamber from the outside ,wherein the liquid supply section is configured to disperse the liquid in a longitudinal direction rather than a width direction of a groove of the screw rotor.2. The fluid machine according to claim 1 , wherein the liquid supply section includes a plurality of liquid injection holes in which each axis is inclined with respect to each other in the same plane and intersects in the same groove.3. The fluid machine according to claim 2 , wherein the liquid supply section is disposed such that a straight line connecting center axes of the plurality of liquid injection holes in the longitudinal direction is at a predetermined angle with respect to a direction orthogonal to the longitudinal direction of the groove of the screw rotor.4. The fluid machine according to claim 3 , wherein the liquid supply section is disposed in a direction in which the straight line is orthogonal to the longitudinal direction of the groove communicating with the liquid injection holes of the screw rotor.5. The fluid machine according to claim 2 , wherein the liquid supply section is an impinging jet nozzle.6. The fluid machine according to claim 1 , wherein the liquid supply section has a slit section which connects a liquid supply hole and the working ...

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Номер записи: 73
28-05-2020 дата публикации

SILENCER AND COMPRESSOR

Номер: US20200166035A1
Автор: BI Yushi, CAO CONG, HUANG Ziyuan, Liu Hua, MENG Qiangjun, ZHANG Helong, Zhang Tianyi
Принадлежит:

Disclosed are a silencer and a compressor with same. The silencer includes a housing, a gas inlet end of the housing being provided with a protrusion extending into an interior of the housing, a portion of the protrusion approximate to a gas outlet end of the housing being closed, and the gas inlet end of the housing being provided with at least two gas inlets around the protrusion. A part of a gas flow enters the housing through the gas inlets, and other part of the gas flow impacts the protrusion and then at least partially flows back and enters the housing through the gas inlets. 1. A silencer , comprising a housing , wherein , a protrusion is arranged in a gas inlet end of the housing and extends into an interior of the housing; a portion of the protrusion , which is approximate to a gas outlet end of the housing , is closed;at least two gas inlets are arranged in the gas inlet end of the housing and disposed around the protrusion;enabling that a part of a gas flow flows through the gas inlets and enters the housing;another part of the gas flow impacts the closed portion of the protrusion, and at least partially flows back and enters the housing through the gas inlets.2. The silencer according to claim 1 , wherein the protrusion is a solid structure.3. The silencer according to claim 1 , wherein claim 1 ,the protrusion is a hollow structure; the protrusion comprises a top wall; the top wall is a closed portion;the gas flow impacts the top wall and flows back when it enters the protrusion.4. The silencer according to claim 3 , wherein the protrusion comprises a circumferential side wall claim 3 , and the circumferential side wall is provided with a through opening that is in communication with the interior of the housing.5. The silencer according to claim 4 , wherein a size of the through opening is smaller than a size of the gas inlet.6. The silencer according to claim 1 , wherein a filter screen is arranged inside the housing; in a direction of the gas flow in ...

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Номер записи: 74
30-06-2016 дата публикации

COMPRESSOR SYSTEM WITH VARIABLE LUBRICANT INJECTION ORIFICE

Номер: US20160186755A1
Автор: Peters Michael
Принадлежит:

A compressor system with a continuously variable oil injection orifice is structured to regulate a flow of oil from an oil reservoir into a compressor. The orifice includes a first valve member moveable in response to oil pressure toward a second valve member to define a continuously variable flow area. A biasing member urges the first valve member away from the second valve member. 1. A compressor system , comprising:a compressor;an oil reservoir; anda continuously variable oil injection orifice structured to regulate a flow of oil from the oil reservoir into the compressor, the continuously variable oil injection orifice comprising:a first valve member structured to displace in response to oil pressure;a second valve member structured to cooperate with the first valve member to define a continuously variable flow area for controlling a flow of oil through the continuously variable injection orifice;a biasing member structured to urge the first valve member away from the second valve member; andwherein oil pressure acting on the first valve member urges the valve member to move toward the second valve member.2. The compressor system of claim 1 , wherein a displacement of the first valve member toward the second valve member reduces the continuously variable flow area.3. The compressor system of claim 1 , wherein the biasing member is a dual acting spring system.4. The compressor system of claim 1 , wherein the second valve member includes a plate having an oil discharge opening for discharging the oil to the compressor.5. The compressor system of claim 4 , wherein the plate includes a mesh disposed in the oil discharge opening.6. The compressor system of claim 4 , wherein the plate includes:a hub having a pilot opening formed therethrough;an outer rim positioned about the hub; andat least one supporting arm extending between the hub and the rim.7. The compressor system of claim 6 , wherein the pilot opening is structured to slidably receive a rod.8. The compressor ...

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Номер записи: 75
12-07-2018 дата публикации

FLUID COMPRESSOR

Номер: US20180195511A1
Автор: Mumpower Kevin, Sweet Nicholas
Принадлежит: Bristol Compressors International, LLC

A fluid compressor includes a housing, a compression chamber, and a shaft including two vanes that each extend from the shaft to contact an inner surface of the compression chamber. The shaft, vanes, and inner surface of the compression chamber define at least two suction pockets and at least two discharge compression pockets arranged around a perimeter of the shaft. Each suction pocket is between two discharge pockets and each discharge pocket is between two suction pockets. 1. A fluid compressor comprising:a housing;a compression chamber; anda shaft including two vanes that each extend from the shaft to contact an inner surface of the compression chamber, the shaft, vanes, and as surface of the compression chamber defining at least two suction pockets and at least two discharge compression pockets arranged around a perimeter of the shaft, each suction pocket being between two discharge pockets and each discharge pocket being between two suction pockets.2. The fluid compressor as set forth in claim 1 , further comprising:discharge valves on a compression chamber cover plate.3. The fluid compressor as set forth in claim 1 , further comprising:discharge valves on a bearing hub.4. The fluid compressor as set forth in claim 1 , wherein the shaft rotates symmetrically around a shaft centerline.5. The fluid compressor as set forth in claim 1 , wherein the motor is fixed directly to an inner surface of the housing.6. The fluid compressor as set forth in claim 1 , wherein the shaft includes an off center oil passage that runs from a top to a bottom of the shaft.7. The fluid compressor as set forth in claim 6 , wherein the bottom of the shaft extends into an oil sump within a lower bearing.8. The fluid compressor as set forth in claim 1 , wherein the compressor includes exactly two discharge pockets and exactly two suction pockets. This application claims priority under 35 U.S.C. § 119(e) to U.S. application Ser. No. 62/445,297, filed Jan. 12, 2017. This application is ...

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Номер записи: 76
29-07-2021 дата публикации

COMPRESSOR PUMP BODY, COMPRESSOR, AND AIR CONDITIONER

Номер: US20210231123A1
Автор: LIU Jinwei, Luo Fayou, SHI ZHENGLIANG, SUN Wenjiao, WAN Pengkai, Wu Fei, XU Jia, ZHAO Qingfu
Принадлежит:

The disclosure discloses a compressor pump body, a compressor and an air conditioner. The compressor pump body includes a sliding vane, a first flange and a second flange. The sliding vane includes a main body. The main body is provided with a first surface and a second surface which are arranged opposite to each other. The first surface abuts against the first flange, and the second surface abuts against the second flange. The first surface and/or the second surface are/is provided with an enlargement portion. An exhaust port is formed in the first flange and/or the second flange. When the sliding vane rotates to sweep the exhaust port, the enlargement portion can prevent two sides of the sliding vane in the rotation direction from communicating by means of the exhaust port. 1. A compressor pump body , comprising a sliding vane , a first flange and a second flange; the sliding vane comprises a main body; the main body is provided with a first surface and a second surface arranged opposite to the first surface; the first surface abuts against the first flange , and the second surface abuts against the second flange; the first surface is provided with an enlargement portion , or the second surface is provided with an enlargement portion , or the first surface and the second surface are provided with enlargement portions; an exhaust port is formed in the first flange or an exhaust port is formed in the second flange , or exhaust ports are formed in the first flange and the second flange; when the sliding vane rotates to sweep the exhaust port , the enlargement portion is able to prevent two sides of the sliding vane in a rotation direction from communicating by means of the exhaust port.2. The compressor pump body as claimed in claim 1 , wherein the enlargement portion continuously extends from the first surface to the second surface.3. The compressor pump body as claimed in claim 1 , wherein the main body is further provided with a third surface and a fourth surface ...

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Номер записи: 77
27-07-2017 дата публикации

SCREW COMPRESSOR

Номер: US20170211575A1
Автор: FREDRICH Ole, LOSCH Stefan, NEUWIRTH Ottmar
Принадлежит:

A screw compressor, in particular for refrigeration systems, comprising a compressor housing () which at least partly encloses the compressor, an integrated suction gas filter () and a non-return valve () that is to be actuated by pressurized gas; the compressor housing () has grooves, in particular drilled or cast ducts () to which pressurized gas can be fed in order to control the non-return valve (). 1. A screw compressor , in particular for refrigerating plants , which has a compressor housing which at least partially houses the compressor , comprising an optional integrated suction gas filter and an integrated non-return valve , whereinthe non-return valve is a valve to be actuated with pressurized gas and the compressor housing possesses cavities, in particular bored or cast-in ducts, which can be subjected to pressurized gas for controlling of the non-return valve.2. The screw compressor as claimed in claim 1 , whereinthe screw compressor further has a valve, which is preferably realized as a solenoid valve, for switching on and off the pressurized gas supply to the non-return valve, wherein the solenoid valve is disposed directly on the compressor housing and creates the connection of the ducts bored or cast in the compressor housing.3. The screw compressor as claimed in claim 1 , whereinthe non-return valve has a valve disk and the suction gas filter is disposed coaxially around the non-return valve in such a way that the valve disk of the non-return valve moves within the suction gas filter.4. The screw compressor as claimed in claim 1 , whereinthe compressor housing has a cover, and in that the cover of the compressor housing is simultaneously the cover of the non-return valve.5. The screw compressor as claimed in claim 1 , whereinthe screw compressor has a third gas space, which is provided to receive compressed gas, i.e. pressurized gas, and a first duct, in which the non-return valve is at least partially mounted, wherein the third gas space and the ...

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Номер записи: 78
25-06-2020 дата публикации

SCREW COMPRESSOR

Номер: US20200200171A1
Автор: MEEUSEN Wim, VERRELST Björn
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

A screw compressor includes a first rotor and a second rotor, and each rotor is provided with a synchronisation gear. The screw compressor is further provided with an electric motor and one or two driving gears for driving the first rotor or second rotor. At least one of the synchronisation gears or driving gears is provided with spokes between a rim supporting a gear mesh and a corresponding gear hub. 115-. (canceled)16. A screw compressor comprising a first rotor and a second rotor , each rotor comprising a synchronisation gear , said screw compressor further provided with an electric motor and one or two driving gears for driving said first rotor or second rotor , wherein at least one of the synchronisation gears or driving gears is provided with spokes between a rim supporting a gear mesh and a corresponding gear hub.17. The screw compressor according to claim 16 , wherein the screw compressor comprises only one driving gear for driving said first rotor or second rotor.18. The screw compressor according to claim 16 , wherein the synchronisation gear or driving gear with the largest diameter is provided with spokes between the rim supporting a gear mesh and a corresponding gear hub.19. The screw compressor according to claim 16 , wherein at least one of the driving gears or synchronisation gears with spokes is a helical gear with the teeth at an angle with an axis of the gear.20. The screw compressor according to claim 16 , wherein one of said driving gears is mounted on the electric motor claim 16 , whereby this driving gear is provided with spokes between a rim supporting a gear mesh and a corresponding gear hub.21. The screw compressor according to claim 16 , wherein the spokes are beam-shaped and have a constant cross-section.22. The screw compressor according to claim 16 , wherein the surface of the space between the spokes is more than three times claim 16 , preferably more than four and claim 16 , even more preferably claim 16 , more than five times the ...

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Номер записи: 79
13-08-2015 дата публикации

METHOD FOR SMOOTHING A PERFLUORO ALKOXY ALKANE FILM SURFACE

Номер: US20150225593A1
Автор: Akutsu Isao, Iwaki Masamichi, Ohmi Tadahiro, Ohyama Kenji
Принадлежит: TOHOKU UNIVERSITY

Method for increasing the smoothness of the free surface area of a PFA film, provided on a component by sequentially exposing it to a temperature higher than its melting temperature so as to melt at least the free surface area, lowering the temperature to solidify the melted portion, remelting the free surface area by exposing it to a temperature of at least the PFA melting temperature and again lowering the temperature. The PFA film may be provided on AlO, Ni or NiFfilm. 2. The method according to claim 1 , wherein the PFA film is provided on an AlOfilm formed by non-porous anodic oxidization.3. The method according to claim 1 ,wherein the PFA film is provided on a Ni film.47-. (canceled)8. The method according to claim 1 , wherein the PFA film is provided on a NiFfilm.9. The method according to claim 1 , wherein the component is a screw rotor for a gas exhaust screw pump.10. The method according to claim 2 , wherein the component is a screw rotor for a gas exhaust screw pump.11. The method according to claim 3 , wherein the component is a screw rotor for a gas exhaust screw pump.12. The method according to claim 8 , wherein the component is a screw rotor for a gas exhaust screw pump.13. The method according to claim 1 , wherein the PFA has a molecular weight of from hundreds of thousands to one million.14. The method according to claim 2 , wherein the PFA has a molecular weight of from hundreds of thousands to one million.15. The method according to claim 3 , wherein the PFA has a molecular weight of from hundreds of thousands to one million.16. The method according to claim 8 , wherein the PFA has a molecular weight of from hundreds of thousands to one million.17. The method according to claim 9 , wherein the PFA has a molecular weight of from hundreds of thousands to one million.18. The method according to claim 10 , wherein the PFA has a molecular weight of from hundreds of thousands to one million.19. The method according to claim 11 , wherein the PFA has a ...

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Номер записи: 80
11-07-2019 дата публикации

Screw Compressor System for a Utility Vehicle

Номер: US20190211825A1
Автор: HEBRARD Gilles, MARESCOT Jean-Baptiste, MELLAR Joerg, WEINHOLD Thomas
Принадлежит:

A screw compressor system for a utility vehicle has at least one screw compressor, at least one screw compressor drive with an output shaft, at least one driven screw with a screw drive shaft section. The output shaft and the screw drive shaft section are essentially coaxial. 1. A screw compressor system for a utility vehicle , comprising:at least one screw compressor;at least one screw compressor drive with an output shaft; andat least one driven screw with a screw drive shaft portion, whereinthe output shaft and the screw drive shaft portion are substantially coaxial.2. The screw compressor system as claimed in claim 1 , whereina compensating coupling is provided between the output shaft and the screw drive shaft portion.3. The screw compressor system as claimed in claim 1 , whereinthe screw drive shaft portion has a first bearing portion.4. The screw compressor system as claimed in claim 3 , whereina radial bearing is arranged on the first bearing portion.5. The screw compressor system as claimed in claim 4 , whereinthe radial bearing is in the form of a needle-roller bearing.6. The screw compressor system as claimed in claim 4 , whereinthe radial bearing has no inner ring.7. The screw compressor system as claimed in claim 4 , whereinrolling elements of the radial bearing run directly on a surface of the first bearing portion.8. The screw compressor system as claimed in claim 5 , whereinrolling elements of the radial bearing run directly on a surface of the first bearing portion.9. The screw compressor system as claimed in claim 6 , whereinrolling elements of the radial bearing run directly on a surface of the first bearing portion.10. The screw compressor system as claimed in claim 3 , whereinthe driven screw has a screw portion and a second bearing portion in addition to the screw drive shaft portion, andthe screw portion is situated between the screw drive shaft portion and the second bearing portion.11. The screw compressor system as claimed in claim 10 , ...

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Номер записи: 81
09-08-2018 дата публикации

HIGH EFFICIENCY HEATING AND/OR COOLING SYSTEM AND METHODS

Номер: US20180223846A1
Автор: Staffend Gilbert S., Staffend Nancy A., Staffend Nicholas A.
Принадлежит:

HVAC systems and methods for delivering highly efficient heating and cooling using ambient air as the working fluid. A plenum has an upstream inlet and a downstream outlet, each in fluid communication with a target space to be heated or cooled. Ambient air is drawn into the inlet at an incoming pressure and an incoming temperature. The inlet and outlet are gated, respectively, by first and second rotary pumps. A heat exchanger in the plenum transfers heat into or out of the air, provoking a change in air volume within the plenum. The systems and methods are configured to operate essentially between the working temperatures, Tand T. This technique, called Convergent Refrigeration or counter-conditioning, provides for the reduction of excess refrigerant lift by optimization of the heat transfer temperature. Two Convergent Refrigeration systems can be arranged back-to-back through a common heat exchanger for ultra-high efficiency operation. 1. A method for transferring heat between a heat exchanger and a gaseous medium in a thermodynamic system , said method comprising the steps of:providing a plenum for a gaseous heat transfer medium,inlet gating the plenum at an upstream location with an inlet gate, the gaseous medium having an incoming pressure and temperature entering the inlet gate,outlet gating the plenum at a downstream location with an outlet gate,operatively locating a heat exchanger within the plenum in-between the inlet gate and the outlet gate,transferring heat into or out of the gaseous medium with the heat exchanger, the heat exchanger having a Heat Exchanger Temperature, the gaseous medium in the plenum upstream of the heat exchanger having an Approaching Temperature,counter-conditioning the Approaching Temperature by reducing the Approaching Temperature below the Heat Exchanger Temperature when heat is transferred into the gaseous medium from the heat exchanger and elevating the Approaching Temperature above the Heat Exchanger Temperature when heat is ...

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Номер записи: 82
27-08-2015 дата публикации

OIL SEPARATOR DEVICE FOR A VOLUMETRIC COMPRESSOR AND VOLUMETRIC COMPRESSOR

Номер: US20150240817A1
Автор: MIETTO Virgilio
Принадлежит:

The present invention is a separator device (oil separation) () for a device () for compressing a gas through the use of a compression fluid, comprising a compression chamber () suited to generate a compressed mixture of the gas and the compression fluid, and a separation tank () for the removal of the lubricant fluid from the compressed mixture, a first tubular element () suited to be inserted between the compression chamber () and the oil separation tank () of the compression device (), in such a way as to convey the mixture inside the tank (). The device () comprises means for deviating and/or conveying the flow of the compressed mixture that are suited to convey the mixture against the inner walls of the first tubular element () before the compressed mixture flows out of the first tubular element (). The invention also concerns a separation tank () for a device () for compressing a gas through the use of a compression fluid. 11001127100101271710101101. Separator device (oil separation device) () for a device () for compressing a gas through the use of a compression fluid , said compression device () comprising a compression chamber () suited to generate a compressed mixture of said gas and said compression fluid , along with a separation tank () suited to remove said lubricant fluid from said compressed mixture , said device () comprising a first tubular element () suited to be inserted between said compression chamber () and said oil separation tank () of said compression device () so as to convey said mixture into said tank () , characterized in that said device () comprises deviating and/or conveying means suited to deviate the flow of said compressed mixture and to convey said mixture against the inner walls of said first tubular element () before said compressed mixture flows out of said first tubular element ().2101103102101102. Device according to claim 1 , characterized in that said first tubular element () comprises a first inlet end that defines a ...

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Номер записи: 83
25-08-2016 дата публикации

Oil Supply Type Compressor

Номер: US20160245289A1
Автор: KADO Tomoyuki, OSHIRO Ryusuke
Принадлежит:

The objective of the present invention is to reduce the pressure reduction time while preventing foaming in an oil separation device during capacity control of a compressor, and to avoid startup congestion and thus enable normal starting even when a portion provided in an air release pipe and having a small flow path cross-sectional area becomes clogged. This oil supply type compressor is equipped with a compressor main body, an oil separation device, and an air discharge passage for discharging compressed air during capacity control of the compressor. Furthermore, the air discharge passage is equipped with a passage having a large flow volume and a passage having a small flow volume, and when compressed air is discharged from the air discharge passage to the atmosphere during capacity control, the pressure in the oil separation device is discharged using the passage having a large flow volume, until the pressure reaches or falls below a restarting-possible pressure, which is the pressure at which startup congestion does not occur when the compressor main body is restarted. When the pressure in the oil separation device reaches a prescribed pressure, which is less than or equal to the restarting-possible pressure and is higher than a foaming pressure, which is the pressure at which foaming occurs when the pressure in the oil separation device is discharged quickly, the pressure is discharged using the passage having a small flow volume. 1. An oil supply type compressor , comprising:a compressor body compressing air;an oil separation device separating lubricating oil from the compressed air compressed by the compressor body;piping for supplying, to a user side, the compressed air after flowing through the oil separation device; andan air release path for releasing the compressed air after flowing through the oil separation device in capacity control for the compressor,wherein:the air release path includes a high flow-rate flow path and a low flow-rate flow path;in ...

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Номер записи: 84
30-08-2018 дата публикации

INTERMEDIATE DISCHARGE PORT FOR A COMPRESSOR

Номер: US20180245595A1
Автор: Mlsna Eric S.
Принадлежит:

An intermediate discharge port in a scroll compressor and a method for controlling part-load efficiency of a scroll compressor are disclosed. The compressor includes a compressor housing; a non-orbiting scroll member and an orbiting scroll member forming a compression chamber; a discharge port for receiving a compressed fluid; and an intermediate discharge port fluidly connected between the compression chamber and the discharge port, the intermediate discharge port including a sealing member, fluid flow being prevented between the compression chamber and the discharge port through the intermediate discharge port when in a flow-blocked state, and fluid flow being enabled between the compression chamber and the discharge port through the intermediate discharge port when in a flow-permitted state. 1. A compressor , comprising:a compressor housing;a non-orbiting scroll member and an orbiting scroll member forming a compression chamber;a discharge port for receiving a compressed fluid; andan intermediate discharge port fluidly connected between the compression chamber and the discharge port, the intermediate discharge port including a sealing member, fluid flow being prevented between the compression chamber and the discharge port through the intermediate discharge port when in a flow-blocked state, and fluid flow being enabled between the compression chamber and the discharge port through the intermediate discharge port when in a flow-permitted state.2. The compressor according to claim 1 , wherein the intermediate discharge port is disposed at a location of the compression chamber at which a fluid being compressed is partially compressed.3. The compressor according to claim 1 , wherein the compressor includes a plurality of intermediate discharge ports.4. The compressor according to claim 1 , wherein the intermediate discharge port includes a biasing mechanism for maintaining the sealing member in the flow-blocked state.5. The compressor according to claim 1 , wherein ...

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Номер записи: 85
17-09-2015 дата публикации

OIL-COOLED SCREW COMPRESSOR SYSTEM AND OIL-COOLED SCREW COMPRESSOR

Номер: US20150260187A1
Автор: ENDO Yasuaki, Kaneko Fumihiko, Yamashita Hironori
Принадлежит: MAYEKAWA MFG. CO., LTD.

In a housing of an oil-cooled screw compressor , a separation gas supply path through which separation gas is supplied to a separation gas supply gap defined between a first seal unit and a second seal unit of a seal device , and a pressure balancing path through which an area closer to a screw chamber than the first seal unit in a discharge side seal chamber communicates with a compression chamber at a pressure higher than an intake pressure and lower than a discharge pressure, are defined. A check valve that restricts a flow of a fluid in a direction from the screw chamber to the discharge side seal chamber is disposed in the pressure balancing path 111-. (canceled)12. An oil-cooled screw compressor system comprising:an oil-cooled screw compressor;a tooth surface lubricating fluid supply system that supplies a tooth surface lubricating fluid to the oil-cooled screw compressor;a bearing lubricating fluid supply system that supplies a bearing lubricating fluid to the oil-cooled screw compressor, in addition to the tooth surface lubricating fluid; anda separation gas supply system that supplies separation gas different from target gas compressed by the oil-cooled screw compressor to the oil-cooled screw compressor, whereinthe oil-cooled screw compressor includes:a housing in which a screw chamber, seal chambers positioned on both sides of the screw chamber, bearing chambers in communication with the screw chamber via the seal chambers, a tooth surface lubricating fluid flow path through which the tooth surface lubricating fluid is supplied to the screw chamber, and a bearing lubricating fluid flow path through which the bearing lubricating fluid is supplied to the bearing chambers, are defined; a plurality of bearings that are disposed in the bearing chambers, and rotatably support the respective shafts; and', 'seal devices that are disposed in the respective seal chambers, and each seal a circumference of a corresponding one of the shafts,, 'male and female screw ...

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Номер записи: 86
08-08-2019 дата публикации

Air Compressor

Номер: US20190242382A1
Автор: CHIBA Kotaro, KANADA Minako, KAWAI Ryoji, KOTANI Masanao, Sekiya Sachio, Tsuchiya Takeshi
Принадлежит:

Provided is an air compressor which helps to attain a proper discharge air temperature and which is superior in energy saving property. There are provided an air line connecting an air compressor, an oil separator, and an after cooler; an oil circulation line connecting the air compressor, the oil separator, and an oil cooler; a bearing oil supply line connecting one end of an intermediate branching portion disposed at an intermediate point of the oil circulation line between the oil cooler and the air compressor to a bearing oil supply portion of the air compressor; an intermediate portion oil supply line connecting the other end of the intermediate branching portion to an intermediate oil supply portion of the air compressor; a branching line supplying oil to the bearing oil supply portion and the intermediate oil supply portion; a blower sending air to the oil cooler and the after cooler; a bypass line connecting one end of a bypass branching portion disposed at an intermediate point of the oil circulation line between the oil separator and the oil cooler to the downstream side of the oil cooler of the bearing oil supply line; and a control valve controlling the inflow amount of the lubricating oil to the bypass line. 1. An air compressor unit comprising:an air compressor;an oil separator separating compressed air discharged from the air compressor and a lubricating oil from each other;an oil cooler cooling the lubricating oil discharged from the oil separator;an after cooler cooling discharged air from the air compressor;an air line effecting connection such that the discharged air successively flows through the air compressor, the oil separator, and the after cooler;an oil circulation line effecting connection such that the lubricating oil successively circulates through the air compressor, the oil separator, and the oil cooler;an intermediate branching portion disposed at an intermediate point of the oil circulation line between the oil cooler and the air ...

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Номер записи: 87
30-09-2021 дата публикации

Screw Rotor and Screw-Type Fluid Machine Main Body

Номер: US20210301822A1
Автор: ITOU Yuuji, Suzuki Tomoo, YABE Toshiaki
Принадлежит:

A screw rotor which is hollow has improved performance against heat, pressure, rust, and the like. A screw rotor includes a screw portion of which an outer periphery has teeth and grooves having a helical shape and extending by a predetermined length in an axial direction. A radial cross section of at least a part of the screw portion includes a cross section of an outer surface portion forming the teeth and the grooves, a cross section of an axial center portion, a cross section of a support portion that connects an axial center side of the outer surface portion and an outer diameter side of the axial center portion, and a cross section of a hollow portion formed by the support portions adjacent to each other in a rotational direction and an axial center side inner surface of a tooth bottom or a tooth tip. In at least the radial cross section of the screw portion, different members are continuously joined as an integral structure in a cross section of at least one of the axial center portion and the support portion and the outer surface portion. 1. A screw rotor comprising:a screw portion of which an outer periphery has teeth and grooves having a helical shape and extending by a predetermined length in an axial direction,wherein a radial cross section of at least a part of the screw portion includes a cross section of an outer surface portion forming the teeth and the grooves, a cross section of an axial center portion, a cross section of a support portion that connects an axial center side of the outer surface portion and an outer diameter side of the axial center portion, and a cross section of a hollow portion formed by the support portions adjacent to each other in a rotational direction and an axial center side inner surface of a tooth bottom or a tooth tip, andin at least the radial cross section of the screw portion, different members are continuously joined as an integral structure in a cross section of at least one of the axial center portion and the ...

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Номер записи: 88
15-09-2016 дата публикации

SPIRAL VALVE ACTUATOR FOR AIR COMPRESSOR

Номер: US20160265533A1
Автор: PULLINS Clayton
Принадлежит:

A worm drive actuator for a spiral valve that opens and closes bypass ports on a rotary screw air compressor is provided. 1. An air compressor comprising:a compression chamber having an inlet and an outlet, the compression chamber defined by two radially intersecting axial bores, wherein each said bore contains an air compression screw;at least one bypass port in said compression chamber, wherein said at least one bypass port when open is in fluid communication with a spiral valve chamber that contains a spiral valve, wherein rotation of the spiral valve opens or closes the at least one bypass port; and a worm gear coupled to the spiral valve, and', 'a worm driven by an electric motor., 'a worm drive that actuates the spiral valve, the worm drive comprising2. The air compressor of comprising an effective compression volume of the compression chamber produced when at least one bypass port is open which is smaller than a closed compression volume produced when at least one bypass port is closed.3. The air compressor of wherein the at least one bypass port comprises multiple bypass ports claim 1 , with a first port located closer to the compression chamber outlet than a second port. 1. Technical FieldThe present invention relates to an actuator for a spiral valve that controls the opening and closing of a bypass port on a twin screw air compressor.2. BackgroundTwin screw air compressors are known in the art. Examples of configurations for twin screw air compressors are shown in U.S. Pat. No. 7,285,882 and US Publication No. 2007/0241627. As depicted therein, inside a compressor housing, a motor (typically a permanent magnet rotor/stator motor) is used to drive one of the two compression screws, which in turn drives the other screw. Air is taken in through an inlet, compressed between the screws as they turn, and output through an outlet which is in the opposite side of the screws, in the axial direction, as the air inlet.In one embodiment, an air compressor comprises: ...

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Номер записи: 89
15-08-2019 дата публикации

CAPACITY CONTROL FOR CHILLERS HAVING SCREW COMPRESSORS

Номер: US20190249666A1
Автор: Crane Curtis C., Lindberg Gail E.
Принадлежит: Johnson Controls Technology Company

A compressor system includes a screw compressor () and a controller (). The screw compressor includes a slide valve () selectively actuatable between a first position and a second position to facilitate modulating a capacity of the screw compressor between fully-loaded and fully-unloaded. The controller is communicably coupled to the slide valve. The controller is configured to receive a chilled fluid temperature setpoint for a fluid in heat transfer communication with a refrigerant of the refrigeration circuit; receive temperature data indicative of a chilled fluid temperature of the fluid; determine a difference between the chilled fluid temperature and the chilled fluid temperature setpoint; and provide one of a load command and an unload command to the slide valve based the difference between the chilled fluid temperature and the chilled fluid temperature setpoint. According to an example embodiment, the controller () does not receive feedback from the screw compressor () regarding a position of the slide valve (). 1. A compressor system for a refrigeration circuit , comprising:a screw compressor including a slide valve selectively actuatable between a first position and a second position to facilitate modulating a capacity of the screw compressor between fully-loaded and fully-unloaded; and receive a chilled fluid temperature setpoint for a fluid in heat transfer communication with a refrigerant of the refrigeration circuit;', 'receive temperature data indicative of a billed fluid temperature of the fluid;', 'determine a difference between the chilled fluid temperature and the chilled fluid temperature setpoint; and', 'provide one of a load command and an unload command to the slide valve based the difference between the chilled fluid temperature and the chilled fluid temperature setpoint., 'a controller communicably coupled to the slide valve, the controller configured to2. The compressor system of claim 1 , wherein the controller is further configured to: ...

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Номер записи: 90
06-08-2020 дата публикации

COMPRESSOR

Номер: US20200248689A1
Автор: HONDA Kazunari, Kobayashi Hiroyuki, KONDO Jun, NAMIKI Ken, SAKAKIBARA Kengo, Yamamoto Shinya
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A compressor includes a rotary shaft, a rotating body, a fixed body, a vane, and a compression chamber. The vane has a vane end that contacts the surface of fixed body. The fixed body surface includes two curved surfaces. The curved surface includes a convex surface and a concave surface. The convex surface has a convex surface inner end and a convex surface outer end. The curvature of the convex surface inner end is greater than the curvature of the convex surface outer end. The concave surface has a concave surface inner end and a concave surface outer end. The curvature of the concave surface inner end is greater than the curvature of the concave surface outer end. 1. A compressor comprising:a rotary shaft;a rotating body that is configured to rotate together with the rotary shaft and includes a rotating body surface, which intersects with an axial direction of the rotary shaft, and a vane groove and;a fixed body that is configured not to rotate together with the rotary shaft and includes a fixed body surface, which faces the rotating body surface in the axial direction;a vane that is inserted in the vane groove and configured to rotate together with the rotating body while moving in the axial direction; anda compression chamber that is defined by the rotating body surface and the fixed body surface and in which suction and compression of fluid is performed when the vane rotates while moving in the axial direction, whereinthe vane has a vane end at an end in the axial direction, the vane end contacting the fixed body surface,the vane end is curved to be convex toward the fixed body surface and extends in a direction orthogonal to the axial direction, a fixed body contact surface that contacts the rotating body surface, and', 'two curved surfaces respectively provided on opposite sides of the fixed body contact surface in a circumferential direction of the rotary shaft, each curved surface being curved such that a distance to the rotating body surface increases as ...

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Номер записи: 91
13-08-2020 дата публикации

INTERNAL DISCHARGE GAS PASSAGE FOR COMPRESSOR

Номер: US20200256337A1
Автор: Akei Masao
Принадлежит:

A compressor casing having an internal gas passage includes a first bearing housing arranged at a first end of the casing, a second bearing housing arranged at a second, opposite end of the casing, and a rotor case disposed between the first bearing housing and the second bearing housing. The rotor case includes an axially extending bore within which a plurality of rotors are receivable and a hollow internal cavity isolated from the bore. The internal cavity is fluidly coupled to the bore via at least one recess. At least one exit opening is formed in one of the first bearing housing and the second bearing housing. The at least one exit opening is operably coupled to the internal cavity of the rotor case. 1. A compressor casing having an internal gas passage comprising:a first bearing housing arranged at a first end of the casing;a second bearing housing arranged at a second, opposite end of the casing;a rotor case disposed between the first bearing housing and the second bearing housing, the rotor case including an axially extending bore within which a plurality of rotors are receivable and a hollow internal cavity isolated from the bore, wherein the internal cavity is fluidly coupled to the bore via at least one recess; andat least one exit opening formed in one of the first bearing housing and the second bearing housing, the at least one exit opening being operably coupled to the internal cavity of the rotor case.2. The compressor casing of claim 1 , wherein at least one of the first bearing housing and the second bearing housing includes the at least one recess fluidly coupling the bore to the internal cavity.3. The compressor casing of claim 2 , wherein the first bearing housing includes a first recess and the second bearing housing includes a second recess.4. The compressor casing of claim 3 , wherein the at least one recess is formed in the rotor case.5. The compressor casing of claim 1 , wherein the at least one exit opening includes a plurality of exit ...

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Номер записи: 92
13-08-2020 дата публикации

SEALING DEVICE FOR OIL INJECTION-TYPE SCREW COMPRESSOR

Номер: US20200256338A1
Автор: HAN Yu Sang, Lee Jae Young, SON Kil Won
Принадлежит:

A screw compressor of the present invention comprises: a housing having a compression chamber; male and female rotors provided in the compression chamber; a driving shaft for rotating the male and female rotors; and a seal cover across which the driving shaft is provided, and further includes: an oil chamber provided at the seal cover, and returning, to the compression chamber, oil having leaked into the driving shaft; and a breather for injecting external air into the oil chamber. Therefore, the breather is provided at the upper part of the oil chamber and an oil recovery line is provided at the lower part thereof so as to cause a pressure difference between the upper and lower parts of the oil chamber, such that the flow of the oil having leaked into the driving shaft is smoothly recovered in the oil recovery line. 1. A screw compressor comprising a housing having a compression chamber , male and female rotors provided in the compression chamber , a drive shaft for rotating the male and female rotors , and a seal cover across which the drive shaft is provided , the screw compressor further comprising:an oil chamber provided in the seal cover and returning oil, which leaks into the drive shaft, to the compression chamber; anda breather for injecting external air into the oil chamber.2. The screw compressor according to claim 1 , further comprising:a first lip seal provided between the seal cover and the drive shaft; anda second lip seal provided between the seal cover and the drive shaft,wherein the oil chamber is provided between the first lip seal and the second lip seal to return the oil, which leaks from in the first lip seal, to the compression chamber.3. The screw compressor according to claim 2 , further comprising an air supply line for supplying high-pressure air to the breather claim 2 , wherein an orifice is provided in the air supply line.4. The screw compressor according to claim 3 , wherein the air supply line is connected to an air oil separator tank ...

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Номер записи: 93
27-09-2018 дата публикации

OIL-INJECTED VACUUM PUMP ELEMENT

Номер: US20180274541A1
Автор: BOECKX Jens, SEGERS Jozef Maria
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

An oil-injected vacuum pump element, whereby two mating helical rotors are rotatably provided in a housing, whereby this housing comprises an inlet port and an outlet end face with an outlet port, whereby compression chambers are formed between the helical rotors and the housing, wherein the vacuum pump element is provided with a connection that extends from a first compression chamber to a second smaller compression chamber at the outlet end face, whereby this first compression chamber is at a lower pressure than the second compression chamber and whereby this second compression chamber can make connection with the outlet port upon rotation of the helical rotors, whereby the connection is such that a flow from the second compression chamber to the first compression chamber is possible, whereby the connection is not directly connected to the outlet port. 19-. (canceled)10. An oil-injected vacuum pump element of the screw type , whereby two mating helical rotors are rotatably provided in a housing , whereby this housing comprises an inlet port , an inlet end face and an outlet end face with an outlet port , whereby compression chambers are formed between the helical rotors and the housing that proceed from the inlet port to the outlet port due to the rotation of the helical rotors and thereby become increasingly smaller , wherein the oil-injected vacuum pump element is provided with a connection that extends from a first compression chamber to a second smaller compression chamber at the outlet end face , whereby this first compression chamber is at a lower pressure than the second compression chamber and whereby this second compression chamber can make connection with the outlet port upon rotation of the helical rotors , whereby the connection is such that a flow from the second compression chamber to the first compression chamber is possible so that the pressure in the second compression chamber is reduced , whereby the connection is not directly connected to the ...

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Номер записи: 94
05-10-2017 дата публикации

COMPRESSOR EXHAUST STRUCTURE, SCREW COMPRESSOR AND AIR-CONDITIONING UNIT HAVING SAME

Номер: US20170284399A1
Автор: BI Yushi, Li Rihua, Lin Weijun, Long Hao, Peng Yanhai, TAN Gongsheng, XIA GUANGHUI, XU Kang, Yang Qiaoming, Zhang Tianyi
Принадлежит: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Disclosed are a compressor exhaust structure, a screw compressor and an air-conditioning unit, wherein the compressor exhaust structure comprises a machine body (), an exhaust bearing seat () provided on an exhaust end of the machine body (), and an oil separating barrel () covering the exhaust bearing seat (). The exhaust bearing seat () is provided with a first exhaust chamber, the machine body () is provided with a second exhaust chamber (), and a third exhaust chamber is formed between the exhaust bearing seat () and an inner wall of the oil separating barrel (); the first exhaust chamber is in fluid communication with the second exhaust chamber (), the second exhaust chamber () is in fluid communication with the third exhaust chamber, and the third exhaust chamber is in fluid communication with a discharge port of the oil separating barrel (). The above-mentioned compressor exhaust structure enables gas flow to firstly enter the machine body () via the exhaust bearing seat () and then to flow out of the machine body (), which extends the flow path of the gas flow, facilitates the isolation of gas flow noise, and reduces gas flow pulsation. 1. A compressor exhaust structure , comprising:a machine body,an exhaust bearing seat provided at an exhaust end of the machine body, andan oil separating barrel covering the exhaust bearing seat,wherein:the exhaust bearing seat is provided with a first exhaust chamber, the machine body is provided with a second exhaust chamber, a third exhaust chamber is formed between the exhaust bearing seat and an inner wall of the oil separating barrel, the first exhaust chamber is in fluid communication with the second exhaust chamber, the second exhaust chamber is in fluid communication with the third exhaust chamber, and the third exhaust chamber is in fluid communication with a discharge port of the oil separating barrel.2. The compressor exhaust structure according to claim 1 , wherein an interior of the first exhaust chamber is ...

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Номер записи: 95
11-10-2018 дата публикации

PULSATION MUFFLERS FOR COMPRESSORS

Номер: US20180291905A1
Автор: Schiel Marc, Thomes Ulrich
Принадлежит:

The invention is related to a pulsation muffler () for a gaseous medium flow (), which is supplied by a compressor. The pulsation muffler () comprises a housing () extending along a central axis with a medium flow inlet () and a medium flow outlet; several tubular absorber elements () concentrically arranged in the housing () and fluidically arranged one behind the other. Each tubular absorber element () is provided with an inlet area and an outlet area, positioned at an axial distance from each other. Between the respective radially adjacent wall sections of different absorber elements (), a flow compartment () is maintained for the medium flow (). 1100107. A pulsation muffler () for a gaseous medium flow () supplied by a compressor , the pulsation muffler comprising:{'b': 101', '106', '116, 'a housing () extending along a central axis with a medium flow inlet () and a medium flow outlet (); and'}{'b': 108', '101, 'claim-text': [{'b': '108', 'each of said tubular absorber elements () is provided with an inlet area and an outlet area, positioned at an axial distance from each other,'}, {'b': 108', '106', '101', '108', '108', '108', '116', '101, 'i': a', 'a', 'b', 'c, 'the inlet area of the fluidic front absorber element () is connected to the medium flow inlet () of the housing (), the outlet area of the fluidic front absorber element ( ) is connected to the inlet area of the next fluidic absorber element (), and the outlet area of the fluidic rear absorber element () is connected to the medium flow outlet () of the housing (), and'}, {'b': 112', '114', '107', '108, 'a flow compartment (, ) is maintained for the medium flow () between the respective radially adjacent wall sections of different absorber elements ().'}], 'a plurality of tubular absorber elements (), each made of sound-absorbing material, arranged concentrically in the housing (), wherein'}2100108. The pulsation muffler () according to claim 1 , characterized in that the absorber elements () have a ...

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Номер записи: 96
19-10-2017 дата публикации

SCREW COMPRESSOR ELEMENT

Номер: US20170298938A1
Автор: LODEFIER Koen Roger L
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

A screw compressor element with a housing and two screw rotors that are affixed in the housing in a double cylindrical chamber provided to this end, whereby the housing is provided with an inlet opening on the inlet side of the screw compressor element, whereby the inlet opening extends in the cylindrical walls of the double cylindrical chamber with at least a section that extends in an axial direction, and a transverse section connecting thereto in the form of a strip that extends from the axial section on the inlet side to a side of the section in a direction transverse to the axial direction. 123-. (canceled)24. A screw compressor element for compressing gas , whereby this screw compressor element comprises a housing and two helical rotors that are rotatably affixed in the housing in a double cylindrical chamber provided to this end , composed of two single cylindrical rotor chambers that merge into one another along two axial ribs and whereby the double cylindrical chamber is defined by the cylindrical walls of the rotor chambers and two end faces of the housing , respectively an inlet end face on the inlet side and an outlet end face on the outlet side of the screw compressor element , whereby the housing is provided on the inlet side of the screw compressor element with an inlet opening for the supply of a gas to be compressed , wherein the inlet opening at least partially extends in the cylindrical walls of the rotor chambers with at least an axial section that extends in the axial direction on either side of one of the aforementioned axial ribs , and a transverse section connected thereto in the form of a strip that extends from the base of the axial section on the inlet side of the screw compressor element at a side of the axial section in a direction essentially transverse to the direction of the axial ribs and connects to the inlet end face on the inlet side or is at a distance therefrom.25. The screw compressor element according to claim 24 , wherein the ...

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Номер записи: 97
18-10-2018 дата публикации

VARIABLE-CAPACITY MECHANISM OF SCROLL COMPRESSOR AND SCROLL COMPRESSOR

Номер: US20180298903A1
Автор: Fang Qi, HU Yusheng, Jiang Guobiao, LI Xiaolei, SHAN Caixia
Принадлежит:

Provided is a variable-capacity mechanism for a scroll compressor. The scroll compressor includes a compression mechanism. The compression mechanism includes a fixed scroll and an orbiting scroll for defining a series of compression cavities. The variable-capacity mechanism includes: a discharge channel, suitable for communicating a medium-pressure compression cavity in the compression cavities with a low-pressure region; blocking members, suitable for selectively opening or closing the discharge channel; an actuation device, including an execution member, the blocking members being connected to the execution member so as to selectively open or close the discharge channel along with the actions of the execution member. Multiple blocking members are connected to a single execution member so as to synchronously move along with the actions of the single execution member. By the variable-capacity mechanism, action synchronization of multiple blocking members can be reliably implemented. Provided is a scroll compressor including the variable-capacity mechanism. 121156562. A variable-capacity mechanism () for a scroll compressor () , the scroll compressor () comprising a compression mechanism suitable for compressing a working fluid , the compression mechanism comprising a fixed scroll () and an orbiting scroll () for defining a series of compression cavities between the fixed scroll () and the orbiting scroll () , wherein , the variable-capacity mechanism () comprising:a discharge channel (P), the discharge channel (P) being suitable for communicating a medium-pressure compression cavity in the compression cavities with a low-pressure region;blocking members, the blocking members being suitable for selectively opening or closing the discharge channel (P); andan actuation device, the actuation device comprising an execution member, the blocking members being connected to the execution member so as to selectively open or close the discharge channel (P) along with the ...

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Номер записи: 98
18-10-2018 дата публикации

COMPRESSOR ELEMENT FOR A SCREW COMPRESSOR AND SCREW COMPRESSOR IN WHICH SUCH A COMPRESSOR ELEMENT IS APPLIED

Номер: US20180298904A1
Автор: BERTELS Dieter Manille L., De Bock Simon Peter G., Nachtergaele Johan
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

A compressor element of a screw compressor inlet side and an outlet side and two helical rotors, respectively a male rotor with a drive for the male rotor and a female rotor that is driven by the male rotor by means of synchronisation gearwheels with at least one synchronisation gearwheel on the male rotor, wherein the drive and synchronisation gearwheels of the male rotor are chosen such that, upon being driven with acceleration of the rotors without gas forces, the resulting mechanical drive force that is exerted by this drive and by this synchronisation gearwheel on the male rotor has an axial component that is directed from the outlet side to the inlet side and that the movement of the male rotor in the axial direction from the outlet side to the inlet side is fixed by means of a single axial single-acting or double-acting bearing. 119-. (canceled)20. A compressor element of a screw compressor for compressing gas , with the compressor element comprising a housing with an inlet for the gas on the inlet side , and an outlet for the gas on the outlet side and two rotor chambers in which two helical rotors are mounted on bearings that upon being driven mesh together in order to compress the gas , respectively a male rotor with a drive for the male rotor and a female rotor that is driven by the male rotor by means of synchronisation gearwheels with at least one synchronisation gearwheel on the male rotor and one synchronisation gearwheel on the female rotor , wherein the drive and synchronisation gearwheels of the male rotor are chosen such that , upon being driven with acceleration of the rotors of the compressor element without gas forces , the resulting mechanical drive force that is exerted by this drive and by this synchronisation gearwheel on the male rotor has an axial component that is directed from the outlet side to the inlet side and that the movement of the male rotor in the axial direction from the outlet side to the inlet side is fixed by means of a ...

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Номер записи: 99
27-10-2016 дата публикации

REFRIGERANT COMPRESSOR LUBRICANT VISCOSITY ENHANCEMENT

Номер: US20160312781A1
Автор: Shoulders Stephen L.
Принадлежит:

A compressor assembly is provided including an inlet bearing and an outlet bearing. A rotating compressor member is support for rotation on an inlet end by the inlet bearing and on an outlet end by the outlet bearing. A plurality of connecting passages is configured to supply lubricant to the inlet bearing and the outlet bearing. A first lubricant flow path is arranged downstream from a pressure reducing orifice. The first lubricant flow path is fluidly coupled to at least one of the plurality of connecting passages. At least a portion of the first lubricant flow path is arranged in a heat exchange relationship with a hot gas in discharge port such that the lubricant within the first lubricant flow path increases in viscosity. 1. A compressor assembly , comprising:an inlet bearing;an outlet bearing;a rotating compressor member supported for rotation on an inlet end by the inlet bearing and on an outlet end by the outlet bearing;a plurality of connecting passages for supplying lubricant to the inlet bearing and the outlet bearing; anda first lubricant flow path arranged downstream of a pressure reducing orifice, the first lubricant flow path being fluidly coupled to at least one of the plurality of connecting passages, wherein at least a portion of the first lubricant flow path is arranged in a heat exchange relationship with a hot gas in a discharge port such that a lubricant within the first lubricant flow path increases in viscosity.2. The compressor assembly according to claim 1 , wherein the first lubricant flow path includes a plurality of turns configured to increase a distance of the portion of the first lubricant flow path in a heat transfer relationship with the hot gas.3. The compressor assembly according to claim 2 , wherein the first lubricant flow path includes a conduit positioned within the hot refrigerant gas in the discharge port.4. The compressor assembly according to claim 2 , wherein at least a portion the first lubricant flow path wraps around ...

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Номер записи: 100