公开(公告)号：US12049894B2

公开(公告)日：2024-07-30

申请号：US17771311

申请日：2020-10-09

申请人： Edwards Limited

发明人： Paul Milner ,  David Roy Hayler ,  Phillip North

IPC分类号： F04C27/00 ,  F01C1/12 ,  F01C19/00 ,  F04C18/12 ,  F04C23/00 ,  F04C25/02 ,  F04C29/12 ,  F04C18/08 ,  F04C29/00

CPC分类号： F04C27/008 ,  F04C18/126 ,  F04C23/001 ,  F04C29/12 ,  F01C1/126 ,  F01C19/005 ,  F04C18/08 ,  F04C18/088 ,  F04C23/00 ,  F04C23/003 ,  F04C25/02 ,  F04C27/00 ,  F04C29/0007 ,  F04C2220/10 ,  F04C2240/10

摘要： Aspects of the present invention relate to a stator component for a pump housing. The stator component has a plurality of fluid inlet channels for conveying fluid to respective pumping chambers. The fluid inlet channels each have an inlet port for conveying fluid into the pumping chamber. A plurality of fluid transfer channels are provided for conveying fluid to a respective one of the fluid inlet channels. The fluid transfer channels each have an inlet for receiving pumped fluid. The stator component is adapted to receive at least one sealing member for inhibiting the conveyance of fluid into an associated one of the pumping chambers. Aspects of the present invention relate to a pump housing, a cover plate and a pump. Aspects of the present invention also relate to a method of converting a stator component.

公开(公告)号：US11994127B2

公开(公告)日：2024-05-28

申请号：US17280078

申请日：2019-09-25

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Daisuke Okamoto ,  Naoto Tomioka ,  Mikio Kajiwara ,  Yohei Nishide ,  Yousuke Ohnishi ,  Masaaki Adachi

IPC分类号： F04C23/02 ,  F04C18/356 ,  F04C23/00 ,  F04C29/02 ,  F04C29/04 ,  F25B1/04 ,  F25B1/10 ,  F25B13/00 ,  F25B31/00

CPC分类号： F04C23/02 ,  F04C18/356 ,  F04C18/3564 ,  F04C23/00 ,  F04C23/001 ,  F04C23/008 ,  F04C29/02 ,  F04C29/04 ,  F25B1/04 ,  F25B1/10 ,  F25B13/00 ,  F25B31/004 ,  F04C2210/222 ,  F04C2240/30 ,  F04C2240/804 ,  F25B2400/04 ,  F25B2400/072 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2700/21152

摘要： A multistage compression system uses refrigerant and oil. The multistage compression system includes a low-stage compressor that compresses the refrigerant, a high-stage compressor that further compresses the refrigerant compressed by the low-stage compressor, and an oil return pipe that returns the oil discharged by the high-stage compressor or the oil in the high-stage compressor to the low-stage compressor. The low-stage compressor has a rotary compression part that compresses the refrigerant, a motor that drives the compression part, and a container housing the compression part and the motor. The motor is disposed above the compression part. The oil return pipe is connected to a space below the motor inside the container.

公开(公告)号：US20240141896A1

公开(公告)日：2024-05-02

申请号：US18278431

申请日：2022-03-02

申请人： Hitachi Industrial Equipment Systems Co., Ltd.

发明人： Takeshi TSUCHIYA ,  Kotaro CHIBA ,  Toshiaki YABE ,  Shigeyuki YORIKANE

IPC分类号： F04C18/16 ,  F04C23/00

CPC分类号： F04C18/16 ,  F04C23/001

摘要： A multi-stage screw compressor includes a plurality of stages of compressor bodies that compress a gas in sequence, and each stage of the plurality of stages of compressor bodies has both male and female rotors that are housed revolvably in a casing in a mutually meshing state. The male and female rotors each include a rotor lobe section having a suction-side end face and a discharge-side end face on one end and the other end thereof in the axial direction and having a twisted lobe extending from the suction-side end face to the discharge-side end face. The male and female rotors in a downstream-stage compressor body as at least one certain stage, excluding an upstream-stage compressor body as the first stage, among the plurality of stages of compressor bodies are each configured such that their lead increases from the suction side in the axial direction of the rotor lobe section toward the discharge side.

公开(公告)号：US11933305B2

公开(公告)日：2024-03-19

申请号：US17910261

申请日：2021-03-30

申请人： FUJITSU GENERAL LIMITED

发明人： Shuhei Hoshino

IPC分类号： F04C29/02 ,  F04C18/356 ,  F04C23/00

CPC分类号： F04C29/02 ,  F04C18/3564 ,  F04C23/001

摘要： Provided is a rotary compressor excellent in energy saving performance and reliability by improving sliding performance of a sliding portion and ensuring sealability in a working chamber. An oil groove is formed at a position facing a vane end face on an end plate. The oil groove communicates with an inside of a sealed container, and is exposed in a gap between a leading end surface of a vane and an outer peripheral surface of an annular piston formed when the leading end surface of the vane is in abutment on the outer peripheral surface of the annular piston.

公开(公告)号：US11885334B2

公开(公告)日：2024-01-30

申请号：US17910261

申请日：2021-03-30

申请人： FUJITSU GENERAL LIMITED

发明人： Shuhei Hoshino

IPC分类号： F04C29/02 ,  F04C23/00 ,  F04C18/356

CPC分类号： F04C29/02 ,  F04C18/3564 ,  F04C23/001

摘要： Provided is a rotary compressor excellent in energy saving performance and reliability by improving sliding performance of a sliding portion and ensuring sealability in a working chamber. An oil groove is formed at a position facing a vane end face on an end plate. The oil groove communicates with an inside of a sealed container, and is exposed in a gap between a leading end surface of a vane and an outer peripheral surface of an annular piston formed when the leading end surface of the vane is in abutment on the outer peripheral surface of the annular piston.

公开(公告)号：US11885330B2

公开(公告)日：2024-01-30

申请号：US17801370

申请日：2020-09-30

申请人： FUJITSU GENERAL LIMITED

发明人： Tatsuya Yasui ,  Kenshi Ueda ,  Naoto Tada

IPC分类号： F04C18/356 ,  F04C29/06 ,  F04C23/00

CPC分类号： F04C18/3564 ,  F04C23/001 ,  F04C29/065 ,  F04C29/068 ,  F04C2240/30

摘要： A lower end plate cover is provided with a bulging portion. In a circumferential direction of a rotary shaft, a plurality of bolt holes includes a first bolt hole arranged between a distal end portion and a proximal end portion of the lower discharge valve, a second bolt hole arranged in a position adjacent to the first bolt hole on a side close to a lower vane groove with respect to the first bolt hole, and a third bolt hole arranged in a position adjacent to the first bolt hole on a side away from the lower vane groove with respect to the first bolt hole. When the bulging portion is divided into a first bulging portion and a second bulging portion using a first straight line, the first bulging portion is larger than the second bulging portion.

公开(公告)号：US11761444B2

公开(公告)日：2023-09-19

申请号：US17851362

申请日：2022-06-28

申请人： Edwards Limited

发明人： Mark Edward Tomkins ,  Andrew John Hunt

IPC分类号： F04C29/04 ,  F04C18/12 ,  F04C23/00 ,  F01C21/10

CPC分类号： F04C29/04 ,  F04C18/126 ,  F04C23/001 ,  F04C2220/10 ,  F04C2240/30

摘要： A vacuum pump cooler for cooling a pumped fluid in a multistage vacuum pump, the vacuum pump cooler comprising: a plate comprising: a first surface; a second surface opposite to the first surface; and a channel through which a cooling fluid can flow; and one or more fins extending from the second surface of the plate.

公开(公告)号：US11692538B2

公开(公告)日：2023-07-04

申请号：US17345637

申请日：2021-06-11

申请人： MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION

发明人： Takuya Kinoshita ,  Hideki Yamada

IPC分类号： F04B39/14 ,  F04B39/12 ,  F04C23/00 ,  F04C11/00 ,  F04C23/02 ,  F04D17/12 ,  F04D29/62 ,  F04B41/06

CPC分类号： F04B39/14 ,  F04B39/121 ,  F04C11/00 ,  F04C11/001 ,  F04C11/008 ,  F04C23/00 ,  F04C23/001 ,  F04C23/008 ,  F04C23/02 ,  F04D17/122 ,  F04D29/624 ,  F04B41/06

摘要： A compressor system includes: a first compressor including a first casing having a cylindrical shape, and a first bundle capable of being inserted into and pulled out from the first casing in an axial direction of the first casing; and a second compressor including a second casing having a cylindrical shape, and a second bundle capable of being inserted into and pulled out from the second casing in an axial direction of the second casing. The first and second compressors are arranged to face each other to cause pullout directions of the respective bundles to be opposite to each other. A maintenance space shareable for insertion and pullout operations of the first bundle and insertion and pullout operations of the second bundle is interposed between the first bundle and the second bundle, and is available for the bundle under the insertion and pullout operations.

公开(公告)号：US20190249664A1

公开(公告)日：2019-08-15

申请号：US16234600

申请日：2018-12-28

申请人： Gree Green Refrigeration Technology Center CO., LTD. of Zhuhai

发明人： Hui HUANG ,  Yusheng HU ,  Lingchao KONG ,  Zhongcheng DU ,  Sen YANG ,  Jia XU ,  Liping REN

IPC分类号： F04C18/02 ,  F04C18/356 ,  F04C23/00

CPC分类号： F04C18/02 ,  F04C18/32 ,  F04C18/356 ,  F04C23/001 ,  F04C29/00

摘要： Disclosed is a rotating cylinder enthalpy-adding piston compressor. The compressor is a two-stage rotating cylinder piston compressor, including a first-stage rotating gas cylinder, a first gas cylinder liner, a first piston, and a second-stage rotating gas cylinder, a second gas cylinder liner, and a second piston, and further including an enthalpy-adding assembly connected between the first-stage rotating gas cylinder and the second-stage rotating gas cylinder for supplying gas and adding enthalpy between the two stages of rotating cylinders. By means of adopting a two-stage rotating cylinder piston compressor and arranging an enthalpy-adding assembly between the two stages of rotating cylinders, an enthalpy-adding function is achieved for the rotating cylinder piston compressor and the air conditioning system having same, thereby increasing the enthalpy value of the refrigerant in the system, improving the refrigerating and heating capabilities, improving the energy efficiency ratio and enhancing the reliability of the system.

公开(公告)号：US20190234407A1

公开(公告)日：2019-08-01

申请号：US16260313

申请日：2019-01-29

申请人： LG ELECTRONICS INC.

发明人： Joonhong PARK ,  Bumdong SA

IPC分类号： F04C29/02 ,  F04C18/356 ,  F04C23/00

CPC分类号： F04C29/02 ,  F01C21/0845 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0057 ,  F04C29/023 ,  F04C2210/26 ,  F04C2240/40

摘要： A rotary compressor may include a rotational shaft coupled to a drive motor and having a central passage, an eccentric portion provided eccentrically from the rotational shaft, a cylinder through which the rotational shaft passes, the cylinder forming a compression chamber in which refrigerant is accommodated, a roller an inner circumferential surface of which is in close contact with an outer circumferential surface of the eccentric portion, the roller rolling and compressing a refrigerant, a vane inserted into the cylinder, the vane protruding from an inner circumferential surface of the cylinder when backpressure is applied to the vane to be in contact with an outer circumferential surface of the roller, and partitioning the compression chamber into a plurality of chambers; a plurality of oil supply grooves on an outer circumferential surface of the eccentric portion; and an oil supply passage that communicates the central passage with the oil supply grooves.