JPH03168565A - Refrigeration cycle - Google Patents

Refrigeration cycle

Info

Publication number
JPH03168565A
JPH03168565A JP30815689A JP30815689A JPH03168565A JP H03168565 A JPH03168565 A JP H03168565A JP 30815689 A JP30815689 A JP 30815689A JP 30815689 A JP30815689 A JP 30815689A JP H03168565 A JPH03168565 A JP H03168565A
Authority
JP
Japan
Prior art keywords
refrigerant
oil
compressor
pressure
refrigerant compressor
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
JP30815689A
Other languages
Japanese (ja)
Inventor
Isao Azeyanagi
Original Assignee
Nippondenso Co 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 Nippondenso Co Ltd filed Critical Nippondenso Co Ltd
Priority to JP30815689A priority Critical patent/JPH03168565A/en
Publication of JPH03168565A publication Critical patent/JPH03168565A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate a lack of oil of a refrigerant compressor even in case of high speed operation of the refrigerant compressor by a method wherein a bypassing circuit is provided with a differential pressure valve to be opened when a pressure at a refrigerant evaporator is higher than a pressure at the refrigerant compressor by a predetermined value.
CONSTITUTION: When a cooling compressor 2 is operated at a high speed, a differential pressure between a refrigerant evaporator 6 and a refrigerant compressor 2 is increased as its suction force is increased. As the differential pressure is more than a predetermined pressure of about 1kg/cm2 a differential pressure valve 8 is opened. As a result, liquid refrigerant containing oil is flowed out of the bottom part of the refrigerant evaporator 6, the refrigerant may pass through an accumulator 15 and a bypassing pipe 16 and then the refrigerant is sucked into the refrigerant compressor 2. In this way, in the cycle 1, the refrigerant compressor 2 is operated at a high speed when the pressure adjusting valve 7 is operated, and in case that a lack of oil may easily occur, the liquid refrigerant containing oil is returned back from the bypassing passage 16 to the refrigerant compressor 2, resulting in that the lack of oil can be eliminated.
COPYRIGHT: (C)1991,JPO&Japio
JP30815689A 1989-11-28 1989-11-28 Refrigeration cycle Pending JPH03168565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30815689A JPH03168565A (en) 1989-11-28 1989-11-28 Refrigeration cycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30815689A JPH03168565A (en) 1989-11-28 1989-11-28 Refrigeration cycle

Publications (1)

Publication Number Publication Date
JPH03168565A true JPH03168565A (en) 1991-07-22

Family

ID=17977572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30815689A Pending JPH03168565A (en) 1989-11-28 1989-11-28 Refrigeration cycle

Country Status (1)

Country Link
JP (1) JPH03168565A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355695A (en) * 1992-11-30 1994-10-18 Mitsubishi Denki Kabushiki Kaisha Refrigeration device using hydrofluorocarbon refrigerant
KR100598376B1 (en) * 2004-10-29 2006-07-06 엘지전자 주식회사 The cool air and refrigrant supply system of a refrigerator with liquid separator bypass valve
JP2011080736A (en) * 2009-10-09 2011-04-21 Itsuwa Kogyo Kk Heat exchange device
JP2016217559A (en) * 2015-05-15 2016-12-22 アイシン精機株式会社 Air conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355695A (en) * 1992-11-30 1994-10-18 Mitsubishi Denki Kabushiki Kaisha Refrigeration device using hydrofluorocarbon refrigerant
KR100598376B1 (en) * 2004-10-29 2006-07-06 엘지전자 주식회사 The cool air and refrigrant supply system of a refrigerator with liquid separator bypass valve
JP2011080736A (en) * 2009-10-09 2011-04-21 Itsuwa Kogyo Kk Heat exchange device
JP2016217559A (en) * 2015-05-15 2016-12-22 アイシン精機株式会社 Air conditioner

Similar Documents

Publication Publication Date Title
JPS62674A (en) Capacity controller for variable angle swing swash type variable capacity compressor
JPH03291465A (en) Refrigerating apparatus
JPH0448160A (en) Freezing cycle device
JPH04371759A (en) Freezing cycle of two-stage compression and two-stage expansion
JPH03168565A (en) Refrigeration cycle
JPH04324069A (en) Refrigerating plant
JPS5738692A (en) Oil returning device of refrigerator
JPH0460348A (en) Screw type freezer
JPS6187988A (en) Scroll compressor
JPH02227570A (en) Refrigerating device
JPH0320571A (en) Air conditioner
JPH04263742A (en) Refrigerator
JPH03122460A (en) Operating controller for refrigerating machine
JPH0424447A (en) Thermo-hygrostat device
JPH01314857A (en) Refrigerating cycle
JPH0291490A (en) Scroll compressor
JPH02119689A (en) Compressor
JPH01269866A (en) Refrigerating device
JPH04222352A (en) Operation controller for freezer
JPS56124698A (en) Volume controller for compressor
JPH02287060A (en) Air conditioner
JPH024164A (en) Freezing cycle device
JPH02298761A (en) Refrigerating cycle for heat pump
JPS62291494A (en) Control method for compressor
JPH0424471A (en) Refrigerating cycle