JPH0351680A - Refrigerating cycle of air conditioner - Google Patents

Refrigerating cycle of air conditioner

Info

Publication number
JPH0351680A
JPH0351680A JP18461989A JP18461989A JPH0351680A JP H0351680 A JPH0351680 A JP H0351680A JP 18461989 A JP18461989 A JP 18461989A JP 18461989 A JP18461989 A JP 18461989A JP H0351680 A JPH0351680 A JP H0351680A
Authority
JP
Japan
Prior art keywords
compressor
refrigerant
oil
refrigerator oil
refrigerating cycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18461989A
Other languages
Japanese (ja)
Inventor
Takeo Ozawa
Hiroshi Kogure
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP18461989A priority Critical patent/JPH0351680A/en
Publication of JPH0351680A publication Critical patent/JPH0351680A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To recover refrigerator oil in a compressor without influence of cooling and heating performance and heighten the reliability of the compressor by providing an injection circuit for bypassing refrigerator oil separated from a refrigerant discharged from the compressor during the compression of the compressor.
CONSTITUTION: An oil separator 2 is provided at the side of the discharge of a refrigerant of a compressor 1 and refrigerator oil is separated by the oil separator 2 from the discharged refrigerant. Next, the separated refrigerator oil is returned to an intermediate pressure of the compressor 1 through an injection circuit bypassed to the compressor by a channel change-over valve 7. Thereby, even if a gas refrigerant is returned to the compressor 1 with the refrigerator oil from the oil separator 2, a quantity of refrigerant circulation does not lower and performance can be protected from being lowered. In addition, the discharge of the refrigerator oil for a refrigerating cycle is prevented and the reliability by the lowering of a quantity of oil of the compressor 1 does not occur while the increase of piping loss due to the refrigerator oil circulation of the refrigerating cycle and performance lowering due to the lowering of refrigerant side a heat transfer rate in the heat exchange rate is prevented.
COPYRIGHT: (C)1991,JPO&Japio
JP18461989A 1989-07-19 1989-07-19 Refrigerating cycle of air conditioner Pending JPH0351680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18461989A JPH0351680A (en) 1989-07-19 1989-07-19 Refrigerating cycle of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18461989A JPH0351680A (en) 1989-07-19 1989-07-19 Refrigerating cycle of air conditioner

Publications (1)

Publication Number Publication Date
JPH0351680A true JPH0351680A (en) 1991-03-06

Family

ID=16156403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18461989A Pending JPH0351680A (en) 1989-07-19 1989-07-19 Refrigerating cycle of air conditioner

Country Status (1)

Country Link
JP (1) JPH0351680A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970722A (en) * 1996-12-19 1999-10-26 Sharp Kabushiki Kaisha Air conditioning apparatus returning refrigerating machine oil to compressor by two restrictors and method of controlling air conditioning apparatus
EP1065455A3 (en) * 1999-06-30 2001-01-24 Carrier Corporation Hot gas compressor bypass using oil separator circuit
WO2009098862A1 (en) * 2008-02-06 2009-08-13 Daikin Industries, Ltd. Refrigeration device
JP2010032196A (en) * 2008-02-06 2010-02-12 Daikin Ind Ltd Refrigerating device
CN110411054A (en) * 2019-07-09 2019-11-05 南京天加环境科技有限公司 A kind of combustion-gas thermal pump air-conditioning system reducing lubricating oil temperature and control method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970722A (en) * 1996-12-19 1999-10-26 Sharp Kabushiki Kaisha Air conditioning apparatus returning refrigerating machine oil to compressor by two restrictors and method of controlling air conditioning apparatus
EP1065455A3 (en) * 1999-06-30 2001-01-24 Carrier Corporation Hot gas compressor bypass using oil separator circuit
WO2009098862A1 (en) * 2008-02-06 2009-08-13 Daikin Industries, Ltd. Refrigeration device
JP2010032195A (en) * 2008-02-06 2010-02-12 Daikin Ind Ltd Refrigerating device
JP2010032196A (en) * 2008-02-06 2010-02-12 Daikin Ind Ltd Refrigerating device
US20100275634A1 (en) * 2008-02-06 2010-11-04 Tetsuya Okamoto Refrigeration apparatus
AU2009210984B2 (en) * 2008-02-06 2011-11-24 Daikin Industries, Ltd. Refrigeration apparatus
CN110411054A (en) * 2019-07-09 2019-11-05 南京天加环境科技有限公司 A kind of combustion-gas thermal pump air-conditioning system reducing lubricating oil temperature and control method
CN110411054B (en) * 2019-07-09 2021-02-02 南京天加环境科技有限公司 Gas heat pump air conditioning system capable of reducing temperature of lubricating oil and control method

Similar Documents

Publication Publication Date Title
JPH03291465A (en) Refrigerating apparatus
JPH0351680A (en) Refrigerating cycle of air conditioner
JPH04320762A (en) Freezing cycle
JPH03294754A (en) Air conditioner
JPS6187988A (en) Scroll compressor
JPH04257660A (en) Two stage compression refrigerating cycle device
JPH02272265A (en) Two stage compression refrigeration cycle and heat-pump type air conditioner
JPH04217754A (en) Air conditioner
JPS54137759A (en) Multi-stage compression refrigerating machine
JPH0387576A (en) Air conditioner
JPH024164A (en) Freezing cycle device
JPH02298761A (en) Refrigerating cycle for heat pump
JPH01155154A (en) Air conditioner
JPH03194363A (en) Refrigerating machine
JPH04203765A (en) Heat pump type air conditioner
JPH01305269A (en) Refrigerating cycle
JPH04174259A (en) Low and high temperature medium cooling refrigerator
JPH03137458A (en) Two-stage compressing and freezing cycle
JPH02217758A (en) Control device for refrigeratin machine
JPH04306471A (en) Ice heat accumulating device
JPH02282675A (en) Freezer
JPH0210062A (en) Device for refrigerating cycle
JPH02242051A (en) Refrigerator
JPH04292749A (en) Two-stage compression refrigeration cycle device
JPH0415460A (en) Freezer device