公开(公告)号：US12050036B2

公开(公告)日：2024-07-30

申请号：US17795358

申请日：2021-03-16

申请人： DANFOSS A/S

发明人： Lin Xiang Sun ,  Tianlei Li ,  Brandon Keith Pritchard

IPC分类号： F25B31/00 ,  F04B35/04 ,  F04B39/06 ,  F25B1/053 ,  F25B1/10 ,  F25B5/02 ,  F25B41/20 ,  H02K11/33 ,  H02P1/28 ,  H02P1/52

CPC分类号： F25B31/006 ,  F04B35/04 ,  F04B39/06 ,  F25B1/053 ,  F25B1/10 ,  F25B5/02 ,  F25B41/20 ,  H02K11/33 ,  H02P1/28 ,  H02P1/52 ,  F25B2700/2104

摘要： This disclosure relates to refrigerant compressors, and, in particular, relates to cooling for the power electronics of such compressors. An example refrigerant system includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. The refrigerant system further includes at least one cooling line configured to direct refrigerant from the main refrigerant loop to cool a chamber containing electronic components. A method is also disclosed.

公开(公告)号：US11971045B2

公开(公告)日：2024-04-30

申请号：US16608709

申请日：2018-05-08

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Yuji Nakazawa ,  Atsushi Sakawaki ,  Hirofumi Higashi ,  Taiichi Nose ,  Takaaki Ono ,  Yusuke Irino

IPC分类号： F04D27/02 ,  F04D17/10 ,  F04D25/06 ,  F04D29/051 ,  F04D29/058 ,  F16C32/04 ,  F25B1/053 ,  H02K7/09 ,  H02K7/14 ,  H02P25/024

CPC分类号： F04D27/0261 ,  F04D17/10 ,  F04D25/0606 ,  F04D29/051 ,  F04D29/058 ,  F16C32/04 ,  F16C32/048 ,  F25B1/053 ,  H02K7/09 ,  H02K7/14 ,  H02P25/024

摘要： A drive support unit of a turbo compressor includes at least one bearingless motor. The at least one bearingless motor includes a rotor-stator pair constituted by a rotor and a stator, and is configured to rotationally drive a drive shaft and to support a radial load of the drive shaft in a contactless manner. Accordingly, it is possible to provide a turbo compressor to which a bearingless motor is applied.

公开(公告)号：US10072884B2

公开(公告)日：2018-09-11

申请号：US13576222

申请日：2011-03-03

申请人： Lucy Yi Liu ,  Suresh Duraisamy ,  Gilbert B. Hofsdal

发明人： Lucy Yi Liu ,  Suresh Duraisamy ,  Gilbert B. Hofsdal

IPC分类号： F25B49/02 ,  F25B41/04 ,  F25D21/08 ,  F25B1/053 ,  F25B1/10 ,  F25B9/00

CPC分类号： F25B49/02 ,  F25B1/053 ,  F25B1/10 ,  F25B9/008 ,  F25B31/008 ,  F25B41/043 ,  F25B2309/061 ,  F25B2341/0662 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2600/0253 ,  F25B2600/2509 ,  F25B2600/2513 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/197 ,  F25B2700/2106 ,  F25B2700/21151 ,  F25B2700/21152 ,  F25B2700/21161 ,  F25B2700/21175 ,  F25D21/08 ,  Y02B30/741

摘要： A method for operating a defrost mode of a transport refrigerant vapor compression system includes initiating a defrost operation for the transport refrigerant vapor compression system by energizing heaters operatively coupled to a heat absorption heat exchanger operable to defrost the heat absorption heat exchanger. During the defrost operation, the method includes comparing the heat absorption heat exchanger pressure to the first predetermined limit; in response to the heat absorption heat exchanger pressure being less than the first predetermined limit, performing at least one operation to determine if the defrost operation should be exited; and in response to the heat absorption heat exchanger pressure being greater than the first predetermined limit, exiting the defrost operation.

公开(公告)号：US20180224168A1

公开(公告)日：2018-08-09

申请号：US15750333

申请日：2016-08-11

申请人： Carrier Corporation

发明人： Parmesh Verma ,  Frederick J. Cogswell ,  William T. Cousins ,  Vishnu M. Sishtla ,  Ulf J. Jonsson ,  Larry D. Burns

IPC分类号： F25B9/00 ,  F25B1/053

CPC分类号： F25B9/006 ,  F25B1/053 ,  F25B25/005 ,  F25B2400/121

摘要： A system (20; 300) comprises: a vapor compression loop (38; 338); a low-pressure or medium-pressure refrigerant in the loop; a centrifugal compressor (42) along the vapor compression loop and comprising: a housing (120); an inlet (44); an outlet (46); an impeller (140); an electric motor (122) coupled to the impeller to drive rotation of the impeller; and one or more refrigerant-lubricated bearings (130, 132).

公开(公告)号：US20180216879A1

公开(公告)日：2018-08-02

申请号：US15746701

申请日：2016-07-21

申请人： Nuovo Pignone Tecnologie Srl

发明人： Antonio PELAGOTTI ,  Annunzio LAZZARI ,  Andrea ALFANI ,  Oriano ZUCCHI

IPC分类号： F25J1/02 ,  F25B1/053 ,  F25J1/00

CPC分类号： F25J1/023 ,  F02C3/045 ,  F05B2210/11 ,  F25B1/00 ,  F25B1/053 ,  F25J1/0022 ,  F25J1/0042 ,  F25J1/0247 ,  F25J1/0263 ,  F25J1/0284 ,  F25J1/0298 ,  F25J2280/10

摘要： A method for starting and operating a plant for the liquefaction of a gaseous product comprising the steps of electrically connecting a variable frequency drive to a motor of a first machine string; increasing the speed of the motor of the first machine string up until a first predefined threshold; electrically disconnecting the variable frequency drive from the motor of the first machine string; electrically connecting the variable frequency drive to a motor of a second machine string; the first predefined threshold is function of said frequency of the power supply grid. The variable frequency drive can be switched during operation of the plant among the strings according to process requirements.

公开(公告)号：US10036582B2

公开(公告)日：2018-07-31

申请号：US14898312

申请日：2013-06-12

申请人： DANFOSS A/S

发明人： William Turner Thornton ,  Joost Brasz

IPC分类号： F25B31/00 ,  F25B31/02 ,  F25B1/053 ,  F25B49/02 ,  F04D29/58

CPC分类号： F25B31/006 ,  F04D29/5806 ,  F25B1/053 ,  F25B31/026 ,  F25B49/02 ,  F25B2600/2515 ,  F25B2700/21157

摘要： A centrifugal compressor for a refrigeration system is disclosed. The centrifugal compressor includes an electric motor, which includes a rotor and a stator. The compressor further includes a housing enclosing the electric motor, a stator cooling passage provided within the housing, and a rotor cooling passageway provided within the housing. The rotor cooling passageway is independent of the stator cooling passageway.

公开(公告)号：US20180180333A1

公开(公告)日：2018-06-28

申请号：US15739221

申请日：2016-08-04

申请人： Carrier Corporation

发明人： Vishnu M. SISHTLA ,  Scott A. NIEFORTH

IPC分类号： F25B31/00 ,  F25B1/053 ,  F25B1/10

CPC分类号： F25B31/002 ,  F25B1/053 ,  F25B1/10 ,  F25B2500/16 ,  F25B2500/27 ,  F25B2700/04

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.

公开(公告)号：US20180128520A1

公开(公告)日：2018-05-10

申请号：US15868793

申请日：2018-01-11

申请人： TRANE INTERNATIONAL INC.

发明人： William E. LAPP ,  Todd W. SMITH ,  Arthur L. BUTTERWORTH ,  Paul J. SIKORSKY

IPC分类号： F25B31/00 ,  F16C33/30 ,  F16C33/66 ,  F25B1/00

CPC分类号： F25B31/002 ,  F04D17/10 ,  F04D17/12 ,  F04D29/059 ,  F04D29/063 ,  F16C33/303 ,  F16C33/62 ,  F16C33/64 ,  F16C33/6692 ,  F16C43/04 ,  F16C2204/66 ,  F16C2204/70 ,  F16C2360/44 ,  F25B1/005 ,  F25B1/053 ,  F25B31/006 ,  Y10T29/49689

摘要： A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.

公开(公告)号：US20180094842A1

公开(公告)日：2018-04-05

申请号：US15655584

申请日：2017-07-20

申请人： Johnson Controls Technology Company

发明人： Nicholas P. Mislak ,  Douglas A. Kester

IPC分类号： F25B43/00 ,  F25B41/00

CPC分类号： F25B43/006 ,  F25B1/053 ,  F25B39/02 ,  F25B41/00 ,  F25B2600/0253 ,  F25B2600/112 ,  Y02B30/741 ,  Y02B30/743

摘要： A combined suction header and accumulator for a refrigeration system is described that may protect a compressor from refrigerant liquid entering the compressor while reducing superheat used to evaporate the refrigerant. The combined suction header and accumulator unit for a refrigeration system includes a suction header coupled to an exit side of an evaporator. The suction header includes a main body and receives a flow of refrigerant from the evaporator. The flow of refrigerant includes a liquid portion and a vapor portion. The combined suction header and accumulator unit includes a liquid accumulator disposed within the main body of the suction header. The liquid accumulator blocks the liquid portion of the flow of refrigerant from exiting the main body.

公开(公告)号：US20180066170A1

公开(公告)日：2018-03-08

申请号：US15791649

申请日：2017-10-24

申请人： ASAHI GLASS COMPANY, LIMITED

发明人： Mai TASAKA ,  Masato FUKUSHIMA ,  Hiroaki MITSUOKA

IPC分类号： C09K5/04 ,  C10M105/38 ,  C10M107/24 ,  C10M105/06 ,  F25B1/053 ,  F25B31/00

CPC分类号： C09K5/044 ,  C09K5/04 ,  C09K2205/126 ,  C09K2205/22 ,  C10M105/06 ,  C10M105/36 ,  C10M105/38 ,  C10M105/42 ,  C10M105/48 ,  C10M107/24 ,  C10M107/34 ,  C10M171/008 ,  C10M2203/065 ,  C10M2203/1065 ,  C10M2205/223 ,  C10M2207/2825 ,  C10M2207/2835 ,  C10M2207/301 ,  C10M2207/325 ,  C10M2209/043 ,  C10M2209/1033 ,  C10N2220/022 ,  C10N2220/301 ,  C10N2220/302 ,  C10N2230/10 ,  C10N2230/20 ,  C10N2240/30 ,  F25B1/00 ,  F25B1/053 ,  F25B31/002

摘要： A composition for a heat cycle system contains a working medium for heat cycle containing 1-chloro-2,3,3,3-tetrafluoropropene and a refrigerant oil.