JPS58176489A - Motor compressor - Google Patents

Motor compressor

Info

Publication number
JPS58176489A
JPS58176489A JP5808182A JP5808182A JPS58176489A JP S58176489 A JPS58176489 A JP S58176489A JP 5808182 A JP5808182 A JP 5808182A JP 5808182 A JP5808182 A JP 5808182A JP S58176489 A JPS58176489 A JP S58176489A
Authority
JP
Japan
Prior art keywords
back pressure
chamber
pressure
check valve
discharging
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
JP5808182A
Other languages
Japanese (ja)
Inventor
Naoshi Uchikawa
Akira Murayama
Takahiro Tamura
Takao Mizuno
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.)
Hitachi Ltd
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 JP5808182A priority Critical patent/JPS58176489A/en
Publication of JPS58176489A publication Critical patent/JPS58176489A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid

Abstract

PURPOSE:To stabilize the back pressure of a back pressure chamber and the level of returning oil for the scroll compressor by a method wherein a check valve communicating with a discharging chamber is provided on the back pressure chamber. CONSTITUTION:The check valve communicating with the discharging chamber 20 is provided at the lower part of the back pressure chamber for the scroll compressor together with a small hole 22. When the compressor is stopped and the pressure thereof is balanced, the check valve 12 is opened and oil in the back pressure chamber returns to an oil reservoir. When the back pressure has become higher than a discharging pressure during operation, the check valve 21 is opened to reduce the back pressure to a pressure lower than the discharging pressure, therefore, the pressure of the back pressure chamber for the scroll compressor and the level of returning oil may be stabilized.
JP5808182A 1982-04-09 1982-04-09 Motor compressor Pending JPS58176489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5808182A JPS58176489A (en) 1982-04-09 1982-04-09 Motor compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5808182A JPS58176489A (en) 1982-04-09 1982-04-09 Motor compressor

Publications (1)

Publication Number Publication Date
JPS58176489A true JPS58176489A (en) 1983-10-15

Family

ID=13073963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5808182A Pending JPS58176489A (en) 1982-04-09 1982-04-09 Motor compressor

Country Status (1)

Country Link
JP (1) JPS58176489A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01178785A (en) * 1987-12-29 1989-07-14 Matsushita Electric Ind Co Ltd Electric compressor
US4997350A (en) * 1988-02-19 1991-03-05 Hitachi, Ltd. Scroll fluid machine with bearing lubrication
EP0717192A1 (en) * 1994-06-29 1996-06-19 Daikin Industries, Ltd. Oil level control device for a compressor
JP2006220143A (en) * 2005-01-14 2006-08-24 Hitachi Ltd Displacement fluid machine and refrigerating cycle by use of it
WO2018173543A1 (en) * 2017-03-22 2018-09-27 サンデンホールディングス株式会社 Scroll compressor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01178785A (en) * 1987-12-29 1989-07-14 Matsushita Electric Ind Co Ltd Electric compressor
US4997350A (en) * 1988-02-19 1991-03-05 Hitachi, Ltd. Scroll fluid machine with bearing lubrication
EP0717192A1 (en) * 1994-06-29 1996-06-19 Daikin Industries, Ltd. Oil level control device for a compressor
EP0717192A4 (en) * 1994-06-29 1998-01-07 Daikin Ind Ltd Oil level control device for a compressor
JP2006220143A (en) * 2005-01-14 2006-08-24 Hitachi Ltd Displacement fluid machine and refrigerating cycle by use of it
JP4697734B2 (en) * 2005-01-14 2011-06-08 日立アプライアンス株式会社 Refrigeration cycle
WO2018173543A1 (en) * 2017-03-22 2018-09-27 サンデンホールディングス株式会社 Scroll compressor
CN110462217A (en) * 2017-03-22 2019-11-15 三电控股株式会社 Scrawl compressor

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