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公开(公告)号：US11346366B2
公开(公告)日：2022-05-31
申请号：US16778729
申请日：2020-01-31
申请人： Carrier Corporation
IPC分类号： F04D29/44 , F04D29/059 , F04D17/10
摘要： A centrifugal compressor includes a shaft defining an axis, an impeller mounted to the shaft for rotation about the axis, and a diffuser section including a first wall, a second wall, and an opening defined between the first wall and the second wall. The opening of the diffuser section is arranged in fluid communication with the impeller. The first wall is rotatable about the axis and rotation of the first wall about the axis is mechanically driven.
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公开(公告)号：US20210270289A1
公开(公告)日：2021-09-02
申请号：US17252769
申请日：2020-07-10
申请人： Carrier Corporation
摘要： A centrifugal compressor includes an impeller configured to drive fluid along a fluid flowpath via a plurality of discrete passages. Each of the discrete passages includes a discrete passage exit. A diffuser portion is disposed circumferentially about the impeller. The diffuser portion includes a plenum connected to each exit of the discrete passages via a plurality of diffuser inlets and an equalization plenum defined adjacent to the impeller. The equalization plenum is fluidly connected to each discrete passage exit via a corresponding slot.
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公开(公告)号：US20210270279A1
公开(公告)日：2021-09-02
申请号：US17254500
申请日：2020-05-11
申请人： Carrier Corporation
摘要： An exemplary compressor system includes a compressor having a fluid inlet and a fluid outlet. An isolation valve connects the fluid outlet of the compressor to a condenser. A controller is communicatively coupled to the isolation valve and the compressor. The controller includes a memory storing instructions configured to cause the controller to detect one of a surge event and a surge event precursor and restrict an opening in the isolation valve in response.
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公开(公告)号：US11022351B2
公开(公告)日：2021-06-01
申请号：US15739221
申请日：2016-08-04
申请人： Carrier Corporation
摘要： A vapor compression system comprises a compressor (22). The compressor comprises an inlet (40) and an outlet (42) and an electric motor (28). The motor has a stator (30) and a rotor (32). A plurality of bearings (36) support the rotor. A fluid flowpath (126) extends to the plurality of bearings. A branch (310) from the fluid flowpath extends to the compressor. A liquid sensor (330) is along the branch.
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公开(公告)号：US10823467B2
公开(公告)日：2020-11-03
申请号：US15563146
申请日：2016-03-30
申请人： Carrier Corporation
发明人： Ulf J. Jonsson , Zissis A. Dardas , Vishnu M. Sishtla , Daniel G. Goberman , Zaffir A. Chaudhry , Xia Tang , Susanne M. Opalka
IPC分类号： F25B31/00 , F25B1/053 , F25B1/10 , F25B25/00 , C10M171/00 , C09K5/04 , F04D29/059 , F04D29/063 , F04D17/12 , C10M105/38 , C10N20/00 , C10N30/06 , C10N40/30 , F04D17/10 , F04D25/06
摘要： A vapor compression system (20) has: a centrifugal compressor (22) having an inlet (40) and an outlet (42); and an electric motor (28) having a stator (30) and a rotor (32). A plurality of bearings (36) support the rotor. A refrigerant charge comprises a base refrigerant and one or more oils. The one or more oils are present at a total concentration of 80-5000 parts per million (ppm) by weight.
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公开(公告)号：US10527050B2
公开(公告)日：2020-01-07
申请号：US15126928
申请日：2015-03-17
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla
IPC分类号： F04D29/063 , F04B39/02 , F04B53/18 , F04D29/059 , F25B31/00 , C09K5/04 , C10M171/00 , F04C18/16 , F04C29/02 , F04D17/08 , F04D29/056 , F25B5/04
摘要： In one embodiment, a compressor assembly is provided. The compressor assembly includes a compressor having an inlet, an outlet, and at least one bearing, the compressor configured to compress a first refrigerant. The assembly further includes a lubrication supply conduit fluidly coupled to the compressor and configured to supply a lubricant to the at least one bearing. The lubricant is a second refrigerant.
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公开(公告)号：US20190285081A1
公开(公告)日：2019-09-19
申请号：US16280346
申请日：2019-02-20
申请人： Carrier Corporation
摘要： A centrifugal compressor impeller (60; 160) has a hub (62; 162) having a gaspath surface (64; 164) extending from a leading end to a trailing end. A plurality of blades (70A, 70B; 170) extend from the hub gaspath surface and each have: a leading edge (72A, 72B; 172); a trailing edge (74A, 74B; 174); a first face (80A, 80B; 180); a second face (82A, 82B; 182); and a tip (78A, 78B; 178). A plurality of flow splitter segments (120, 122; 320, 322) extend between associated twos of the blades and each spaced from both the hub gaspath surface and the tips of the associated two blades.
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公开(公告)号：US20190234661A1
公开(公告)日：2019-08-01
申请号：US16262201
申请日：2019-01-30
申请人： Carrier Corporation
CPC分类号： F25B43/043 , F25B43/003 , F25B43/04 , F25B49/02
摘要： A heating, ventilation, air conditioning and refrigeration system includes a heat transfer fluid circulation loop configured to circulate a refrigerant therethrough, a purge gas outlet in operable communication with the heat transfer fluid circulation loop and at least one gas permeable membrane having a first side in operable communication with the purge gas outlet and a second side. The membrane includes a plurality of pores of a size to allow passage of contaminants through the membrane, while restricting passage of the refrigerant through the membrane, and further restricting passage of a vapor phase corrosion inhibitor through the membrane. A purge unit is in operable communication with the second side of the permeable membrane configured to receive a purge gas from the permeable membrane.
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公开(公告)号：US10267539B2
公开(公告)日：2019-04-23
申请号：US15117012
申请日：2015-01-20
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla
摘要： A vapor compression system comprising a centrifugal compressor (22) having: an inlet (24); an outlet (26); a first impeller stage (28); a second impeller stage (30); and a motor (34) coupled to the first impeller stage and second impeller stage. A first heat exchanger (38) is downstream of the outlet along a refrigerant flowpath. An expansion device (56) and a second heat exchanger (64) are upstream of the inlet along the refrigerant flowpath. A bypass flowpath (120; 320) is positioned to deliver refrigerant from the compressor bypassing the first heat exchanger. A valve (128) is positioned to control flow through the bypass flowpath, wherein: the bypass flowpath extends from a first location (140) intermediate the inlet and outlet to a second location (142; 342) downstream of the first heat exchanger along the refrigerant flowpath.
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公开(公告)号：US10228168B2
公开(公告)日：2019-03-12
申请号：US14779157
申请日：2014-02-19
申请人： Carrier Corporation
IPC分类号： F25B31/00 , F04D29/063 , F04D29/58 , F25B1/053 , F25B41/00 , F04D25/06 , F04D29/056 , F25B25/00
摘要： A compressor (22) has a housing assembly (40) with a suction port (24), a discharge port (26), and a motor compartment (60). An electric motor (42) has a stator (62) within the motor compartment and a rotor (64) within the stator. The rotor is mounted for rotation about a rotor axis (500). One or more working impellers (44) are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. An inlet guide vane (IGV) array (174) is between the suction port (24) and the one or more impellers (44). One or more bearing systems (66, 68) support the rotor (64) and/or the one or more impellers (44). One or more main drain passages (120, 234 206; 120, 232, 202, 206) are coupled to the bearings to pass fluid along a drain flowpath from the bearings to a location (172) upstream of the impeller and downstream of the IGV array.
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