公开(公告)号：US12123412B2

公开(公告)日：2024-10-22

申请号：US18042696

申请日：2020-08-28

申请人： Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd

发明人： Andries Daniel Jozef De Bock ,  Xibo Liu ,  Quanxi Jiang ,  Xin Dai

IPC分类号： F04C19/00 ,  F04C28/24 ,  F04C28/28

CPC分类号： F04C19/004 ,  F04C19/00 ,  F04C28/24 ,  F04C28/28 ,  F04C2270/18 ,  F04C2270/19 ,  F04C2270/205 ,  F04C2270/86

摘要： A control system comprising: a suction line; an exhaust line; an operating liquid line; a liquid ring pump coupled to the suction, exhaust, and operating liquid lines; a regulating device configured to control flow of operating liquid into the liquid ring pump; a pressure sensor configured to measure a pressure of an input fluid to the liquid ring pump via the suction line; a first temperature sensor configured to measure temperature of an exhaust fluid output by the liquid ring pump via the exhaust line; a second temperature sensor configured to measure temperature of an operating liquid received by the liquid ring pump via the operating liquid line; and a controller configured to: using the sensor measurements control the one or more regulating devices.

公开(公告)号：US12085077B2

公开(公告)日：2024-09-10

申请号：US18114550

申请日：2023-02-27

申请人： GUANGDONG MIDEA ENVIRONMENTAL TECHNOLOGIES CORPORATION LIMITED

发明人： Baiying Huang ,  Osamu Aiba ,  Hidenobu Shintaku

IPC分类号： F04C18/02 ,  F04B53/10 ,  F04C28/24 ,  F04C28/26 ,  F04C29/12 ,  F16K11/10 ,  F16K15/00 ,  F16K15/02 ,  F16K15/14

CPC分类号： F04C18/0215 ,  F04B53/102 ,  F04B53/103 ,  F04C18/0253 ,  F04C28/24 ,  F04C28/26 ,  F04C29/12 ,  F04C29/124 ,  F04C29/126 ,  F16K11/105 ,  F16K15/00 ,  F16K15/023 ,  F16K15/1401 ,  F04C2240/806

摘要： A scroll compressor is provided. The scroll compressor has a housing, a partition plate, a rack, a movable scroll plate, a stationary scroll plate and a pressure relief low-speed rotation structure. The partition plate is in the interior of the housing and divides the interior of the housing into a suction space and a discharge space, and has a first through to communicate the suction space with the discharge space. The rack is in the suction space and spaced apart from the partition plate. The movable scroll plate is movably provided on the rack. The stationary scroll plate is provided on the rack and cooperates with the movable scroll plate, and has a second through hole communicating with the discharge space. The pressure relief low-speed rotation structure is provided on the stationary scroll plate and configured to communicate the second through hole with the discharge space.

公开(公告)号：US11852145B2

公开(公告)日：2023-12-26

申请号：US16728570

申请日：2019-12-27

申请人： Trane International Inc.

发明人： Jay H. Johnson ,  John R. Sauls ,  Gordon Powell ,  Daniel R. Crum

IPC分类号： F04C29/12 ,  F04C28/14 ,  F04C28/12 ,  F04C28/28 ,  F04C28/24 ,  F04C28/08 ,  F04C18/16 ,  F25B1/047 ,  F25B49/02

CPC分类号： F04C29/124 ,  F04C18/16 ,  F04C28/08 ,  F04C28/12 ,  F04C28/14 ,  F04C28/24 ,  F04C28/28 ,  F25B1/047 ,  F25B49/022 ,  F04C2240/403 ,  F04C2240/81 ,  F04C2270/025 ,  F04C2270/585 ,  F25B2600/0253

摘要： 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.

公开(公告)号：US11828285B2

公开(公告)日：2023-11-28

申请号：US16978566

申请日：2018-10-25

申请人： Edwards Technologies Vacuum Engineering (Qingdao) Co. Ltd.

发明人： Andries Daniel Jozef De Bock ,  Joeri Coeckelbergs ,  Xin Dai ,  Xibo Liu

IPC分类号： F04C19/00 ,  F04C25/02 ,  F04C29/12 ,  F04C7/00 ,  F04C28/24

CPC分类号： F04C19/005 ,  F04C7/00 ,  F04C19/00 ,  F04C19/001 ,  F04C19/004 ,  F04C19/007 ,  F04C25/02 ,  F04C28/24 ,  F04C29/126

摘要： A system comprising: a suction line; a liquid ring pump coupled to the suction line, the liquid ring pump comprising a chamber and an impeller mounted within the chamber; a non-return valve arranged to permit fluid to flow into the chamber via the suction line and to prevent or oppose fluid flow out of the chamber to the suction line; a gas line coupled to the liquid ring pump such that a gas may flow into the liquid ring pump via the gas line, the gas line coupled to the liquid ring pump between the non-return valve and the chamber; a valve disposed on the gas line; and a controller configured to control the valve.

公开(公告)号：US11725662B2

公开(公告)日：2023-08-15

申请号：US16868460

申请日：2020-05-06

申请人： Ateliers Busch SA

发明人： Didier Müller ,  Jean-Eric Larcher ,  Théodore Iltchev

IPC分类号： F04C28/24 ,  F04C28/02 ,  F04C25/02 ,  F04C14/22 ,  F04C14/24 ,  F04C14/28 ,  F04C23/00 ,  F04C18/344 ,  F04C18/34 ,  F04C29/00 ,  F04C29/02 ,  F04C29/12 ,  F04C28/06

CPC分类号： F04C28/24 ,  F04C18/34 ,  F04C18/344 ,  F04C23/001 ,  F04C25/02 ,  F04C28/02 ,  F04C29/0085 ,  F04C29/026 ,  F04C29/126 ,  F04C28/06 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2270/185

摘要： A pumping method in a pumping system comprises: a main vacuum pump with a gas inlet port connected to a vacuum chamber and a gas outlet port leading into a conduit before coming out into the gas outlet of the pumping system, a non-return valve positioned in the conduit between the gas outlet port and the gas outlet, and an auxiliary vacuum pump connected in parallel to the non-return valve. The main vacuum pump is activated in order to pump the gases contained in the vacuum chamber through the gas outlet port, simultaneously the auxiliary vacuum pump is activated and continues to operate all the while that the main vacuum pump pumps the gases contained in the vacuum chamber and/or all the while that the main vacuum pump maintains a defined pressure in the vacuum chamber. Also included is a pumping system.

公开(公告)号：US11519412B2

公开(公告)日：2022-12-06

申请号：US17272521

申请日：2019-09-24

申请人： ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP

发明人： Stijn Broucke ,  Pieter De Schamphelaire

IPC分类号： F01C21/04 ,  F03C2/00 ,  F03C4/00 ,  F04C15/00 ,  F04C29/02 ,  F04C18/16 ,  F04C23/00 ,  F04C28/02 ,  F04C28/24 ,  F04C29/04

摘要： Oil-injected multistage compressor device including a low-pressure compressor element (2) with a gas inlet (4a) for gas to be compressed and a gas outlet (5a) for low-pressure compressed gas and a high-pressure stage compressor element (3) with a gas inlet (4b) for low-pressure compressed gas and a gas outlet (5b) for high-pressure compressed gas. The gas outlet (5a) of element (2) is connected to inlet (4b) of element (3) via a conduit (6). The conduit (6) has a regulatable intercooler (9) configured to regulate the temperature at the gas inlet (4b) of the high-pressure stage compressor element (3) so that it is above the dew point. The intercooler (9) includes a regulatable air cooler and/or a regulatable water cooler, and is configured to adjust the temperature of the air or water by using a bypass conduit (16) and/or by screening off part of the intercooler (9).

公开(公告)号：US20220268279A1

公开(公告)日：2022-08-25

申请号：US17622041

申请日：2019-08-02

申请人： FRUVAC LTD.

发明人： Khurram Akhtar ,  Christopher White

IPC分类号： F04C18/16 ,  F04C29/04 ,  F04C25/02 ,  F04C28/24

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

公开(公告)号：US11384761B2

公开(公告)日：2022-07-12

申请号：US17059300

申请日：2019-12-27

申请人： SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO., LTD.

发明人： Yanzhen Wang ,  Jin Pan ,  Chunhui Liu

IPC分类号： F01C20/18 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C28/18 ,  F04C18/356 ,  F04C23/00 ,  F04C28/24 ,  F04C29/06

摘要： A variable capacity compressor is provided, including: two cylinders and a middle plate; at least one flow channel provided in the middle plate, wherein one end of the flow channel is connected to an exhaust chamber of any one of the two cylinders, the other end is connected to a suction chamber of the other one of the two cylinders. In present disclosure, by setting a flow channel in the middle plate of the variable capacity compressor, the exhaust chamber of one cylinder is connected to the suction chamber of the other cylinder. When the flow channel is completely closed, the two cylinders operate independently; when the flow channel is opened, the refrigerant in the exhaust chamber flows into the suction chamber through the flow channel, that is, the upper cylinders and the lower cylinder are connected to each other, which can adjust the capacity of the compressor.

公开(公告)号：US11204035B2

公开(公告)日：2021-12-21

申请号：US16534122

申请日：2019-08-07

申请人： LG ELECTRONICS INC.

发明人： Honggyun Jin ,  Sangwoo Joo

IPC分类号： F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C2/00 ,  F04C28/26 ,  F04C18/02 ,  F04C23/00 ,  F04C28/16 ,  F04C28/24 ,  F04C28/18 ,  F04C29/00 ,  F04C29/12

摘要： A scroll compressor according to the present invention includes a casing, an orbiting member provided within the casing and performing an orbiting motion, a non-orbiting member forming a compression chamber together with the orbiting member, the compression chamber having a suction chamber, an intermediate pressure chamber and a discharge chamber, a communication passage configured to bypass a refrigerant of the compression chamber into the casing, an opening/closing valve assembly configured to open and close the communication passage, and a switching valve assembly configured to operate the opening/closing valve assembly, the switching valve assembly being provided outside the casing and connected to the opening/closing valve assembly, whereby an installation of the bypass hole can result in prevention of over-compression and an installation of a control valve for varying a capacity outside the casing can result in reduction of costs for the control valve.

公开(公告)号：US20210324859A1

公开(公告)日：2021-10-21

申请号：US17236719

申请日：2021-04-21

申请人： Joy Global Surface Mining Inc

发明人： Michael D. Lanum ,  John Kenneth Luvaas ,  Scott R. McMahon

IPC分类号： F04C29/02 ,  F04C29/04 ,  F04C28/24 ,  F04C18/16

摘要： A lubrication system is provided for supplying lubricant to an air compressor. The air compressor is driven by a drive system. The lubrication system includes a reservoir configured to support lubricant and configured to receive pressurized air from the air compressor, the separator reservoir configured to separate lubricant from the air received from the air compressor; and a motor operably coupled to the drive system and configured to receive pressurized lubricant. The motor is configured to transmit power to the drive system in at least one operating condition.