JPS6458970A - Heat pump type air conditioner - Google Patents

Heat pump type air conditioner

Info

Publication number
JPS6458970A
JPS6458970A JP21730787A JP21730787A JPS6458970A JP S6458970 A JPS6458970 A JP S6458970A JP 21730787 A JP21730787 A JP 21730787A JP 21730787 A JP21730787 A JP 21730787A JP S6458970 A JPS6458970 A JP S6458970A
Authority
JP
Japan
Prior art keywords
oil
compressor
opening
closing valve
separator
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.)
Granted
Application number
JP21730787A
Other languages
Japanese (ja)
Other versions
JPH0610562B2 (en
Inventor
Hiroshi Yuyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62217307A priority Critical patent/JPH0610562B2/en
Publication of JPS6458970A publication Critical patent/JPS6458970A/en
Publication of JPH0610562B2 publication Critical patent/JPH0610562B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements

Landscapes

  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To equalize the quantity of oil of plural compressors, and elongate the life of the compressor, and improve the reliability, by interposing an opening and closing valve in the recovery pipe connected to the bottom of an oil separator, and controlling the opening and closing valve, according to the operation state, and equalizing the quantity of oil of each compressor. CONSTITUTION: At operation of two compressors, the operation frequency of a compressor 1a is changing. For example, in case that such operation where the operation frequency of the compressor 1a is higher than the operation frequency of a compressor 1b continues for a specified time, the oil level of the compressor 1a drops, but an opening and closing valve 19 is closed within an oil separator 2, so oil is collected to the level of the upper recovery pipe 18. Oil is returned to the compressor 1a low in oil level to equalize the oil level, by opening the opening and closing valve 19. The compressor 1a is stopped temporarily, and the single operation of the compressor 1a is performed, and simultaneously the opening and closing valve 19 is opened, whereupon the oil within the oil separator 2 enters an accumulator 7, passing through a pipe 13, and the all quantity of oil within the separator 2 returns to the compressor 1a from the small hole 24 of the suction pipe 11a.
JP62217307A 1987-08-31 1987-08-31 Heat pump type air conditioner Expired - Lifetime JPH0610562B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217307A JPH0610562B2 (en) 1987-08-31 1987-08-31 Heat pump type air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217307A JPH0610562B2 (en) 1987-08-31 1987-08-31 Heat pump type air conditioner

Publications (2)

Publication Number Publication Date
JPS6458970A true JPS6458970A (en) 1989-03-06
JPH0610562B2 JPH0610562B2 (en) 1994-02-09

Family

ID=16702100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217307A Expired - Lifetime JPH0610562B2 (en) 1987-08-31 1987-08-31 Heat pump type air conditioner

Country Status (1)

Country Link
JP (1) JPH0610562B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0296574U (en) * 1989-01-20 1990-08-01
JPH10232056A (en) * 1997-02-20 1998-09-02 Hitachi Ltd Air-conditioning device
KR100390218B1 (en) * 2000-12-20 2003-07-07 위니아만도 주식회사 Capacity control apparatus of multi type air-conditioner and control method thereof
JP2008507659A (en) * 2004-07-27 2008-03-13 ターボコー インク． Dynamically controlled compressor
JP2009103449A (en) * 2009-02-13 2009-05-14 Mitsubishi Electric Corp Refrigerating cycle
EP2730862A1 (en) * 2012-11-12 2014-05-14 LG Electronics Inc. Air conditioner with an oil separator
CN104848615A (en) * 2014-02-13 2015-08-19 松下知识产权经营株式会社 Oil separator
JP2016176664A (en) * 2015-03-20 2016-10-06 ダイキン工業株式会社 Refrigeration device
CN114427745A (en) * 2022-02-18 2022-05-03 宁波奥克斯电气股份有限公司 Intelligent oil return control method for compressor and variable frequency air conditioner
CN114484715A (en) * 2022-01-10 2022-05-13 青岛海尔空调电子有限公司 Multi-compressor refrigerant circulating system and control method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245967A (en) * 1984-05-18 1985-12-05 三菱電機株式会社 Air conditioner
JPS6287772A (en) * 1985-10-11 1987-04-22 ダイキン工業株式会社 Refrigerator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245967A (en) * 1984-05-18 1985-12-05 三菱電機株式会社 Air conditioner
JPS6287772A (en) * 1985-10-11 1987-04-22 ダイキン工業株式会社 Refrigerator

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0296574U (en) * 1989-01-20 1990-08-01
JPH10232056A (en) * 1997-02-20 1998-09-02 Hitachi Ltd Air-conditioning device
KR100390218B1 (en) * 2000-12-20 2003-07-07 위니아만도 주식회사 Capacity control apparatus of multi type air-conditioner and control method thereof
JP2008507659A (en) * 2004-07-27 2008-03-13 ターボコー インク． Dynamically controlled compressor
JP2009103449A (en) * 2009-02-13 2009-05-14 Mitsubishi Electric Corp Refrigerating cycle
EP2730862A1 (en) * 2012-11-12 2014-05-14 LG Electronics Inc. Air conditioner with an oil separator
CN103808091A (en) * 2012-11-12 2014-05-21 Lg电子株式会社 Oil separator and air conditioner with oil separator
US9500396B2 (en) 2012-11-12 2016-11-22 Lg Electronics Inc. Oil separator and air conditioner using the same
EP2910875A1 (en) * 2014-02-13 2015-08-26 Panasonic Intellectual Property Management Co., Ltd. Oil separator
JP2015166668A (en) * 2014-02-13 2015-09-24 パナソニックＩｐマネジメント株式会社 oil separator
CN104848615A (en) * 2014-02-13 2015-08-19 松下知识产权经营株式会社 Oil separator
CN104848615B (en) * 2014-02-13 2019-05-14 松下知识产权经营株式会社 Oil eliminator
JP2016176664A (en) * 2015-03-20 2016-10-06 ダイキン工業株式会社 Refrigeration device
CN114484715A (en) * 2022-01-10 2022-05-13 青岛海尔空调电子有限公司 Multi-compressor refrigerant circulating system and control method thereof
CN114484715B (en) * 2022-01-10 2024-02-20 青岛海尔空调电子有限公司 Multi-compressor refrigerant circulation system and control method thereof
CN114427745A (en) * 2022-02-18 2022-05-03 宁波奥克斯电气股份有限公司 Intelligent oil return control method for compressor and variable frequency air conditioner
CN114427745B (en) * 2022-02-18 2023-09-01 宁波奥克斯电气股份有限公司 Intelligent oil return control method of compressor and variable frequency air conditioner

Also Published As

Publication number Publication date
JPH0610562B2 (en) 1994-02-09

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