EP1120568A3 - Gas compressor - Google Patents

Gas compressor Download PDF

Info

Publication number
EP1120568A3
EP1120568A3 EP01201412A EP01201412A EP1120568A3 EP 1120568 A3 EP1120568 A3 EP 1120568A3 EP 01201412 A EP01201412 A EP 01201412A EP 01201412 A EP01201412 A EP 01201412A EP 1120568 A3 EP1120568 A3 EP 1120568A3
Authority
EP
European Patent Office
Prior art keywords
oil
valve element
compression operation
passage
compression
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
EP01201412A
Other languages
German (de)
French (fr)
Other versions
EP1120568B1 (en
EP1120568A2 (en
Inventor
Makoto c/o Seiko Seiki Kabushiki Kaisha Ijiri
Tatsuhiro c/o Seiko Seiki K.K. Tohyama
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.)
Marelli Corp
Original Assignee
Seiko Seiki KK
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
Priority claimed from JP8033952A external-priority patent/JP2913155B2/en
Application filed by Seiko Seiki KK filed Critical Seiko Seiki KK
Publication of EP1120568A2 publication Critical patent/EP1120568A2/en
Publication of EP1120568A3 publication Critical patent/EP1120568A3/en
Application granted granted Critical
Publication of EP1120568B1 publication Critical patent/EP1120568B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/021—Control systems for the circulation of the lubricant

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

A valve element (20) is slidably provided midway in an oil passage (18). A discharged jet flow of high pressure refrigerant gas that is from a main body (3) side of the compressor is caused to act on an end face (20a) of the valve element (20). During the compression operation in which the discharged jet flow acts on the valve element (20), by the resulting pressure the valve element (20) is slid against the force of a spring (22) to thereby open the oil passage (18). During the stoppage of the compression operation in which the discharged jet flow is stopped, the valve element (20) is slid by the force of the spring (22) to thereby close the oil passage (18). Thereby, it is possible to prevent a lubricating oil from flowing from an oil pool (17) to a suction chamber (12) side through the oil passage (18) and sliding portions such as an F bearing (4a) and so prevent the occurrence of oil compression in the main body (3) of the compressor at the time of restarting the compression operation.
Alternatively, or additionally, a communication passage (23) linking a discharge chamber (16) side to the suction chamber (12) side is provided. A valve element (22) is provided in the communication passage (23) and is arranged to open the communication passage (23) when the compression operation stops and to close the communication passage (23) when the compression operation starts. Thereby, it is possible to equalise the pressure in the discharge chamber (16) and the suction chamber (12) when the compression operation stops and so prevent a lubricating oil from flowing from the oil pool (17) to the suction chamber side (12) through the oil passage (18) and sliding portions and the occurrence of oil compression in the main body (3) of the compressor at the time of restarting the compression operation.
EP01201412A 1995-09-01 1996-08-30 Gas compressor Expired - Lifetime EP1120568B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP22532595 1995-09-01
JP22532595 1995-09-01
JP24982995 1995-09-27
JP24982995 1995-09-27
JP3395296 1996-02-21
JP8033952A JP2913155B2 (en) 1995-09-01 1996-02-21 Gas compressor
EP96306330A EP0761975B1 (en) 1995-09-01 1996-08-30 Gas compressor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP96306330A Division EP0761975B1 (en) 1995-09-01 1996-08-30 Gas compressor

Publications (3)

Publication Number Publication Date
EP1120568A2 EP1120568A2 (en) 2001-08-01
EP1120568A3 true EP1120568A3 (en) 2001-08-29
EP1120568B1 EP1120568B1 (en) 2004-10-13

Family

ID=30773286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01201412A Expired - Lifetime EP1120568B1 (en) 1995-09-01 1996-08-30 Gas compressor

Country Status (2)

Country Link
EP (1) EP1120568B1 (en)
DE (2) DE69633644T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0607198D0 (en) 2006-04-10 2006-05-17 Wabco Automotive Uk Ltd Improved vacuum pump
EP2559903A1 (en) 2011-08-17 2013-02-20 Wabco Automotive UK Limited Improved vacuum pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235251A (en) * 1939-10-25 1941-03-18 Wagner Electric Corp Compressor unloading valve mechanism
FR2218491A1 (en) * 1973-02-20 1974-09-13 Bauer Kompressoren
EP0044530A1 (en) * 1980-07-23 1982-01-27 COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. dite: Electric pumping aggregate with sliding vane and oil sealing
JPS59180095A (en) * 1983-03-30 1984-10-12 Toyoda Autom Loom Works Ltd Lubricating oil excessive supply preventing mechanism in compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235251A (en) * 1939-10-25 1941-03-18 Wagner Electric Corp Compressor unloading valve mechanism
FR2218491A1 (en) * 1973-02-20 1974-09-13 Bauer Kompressoren
EP0044530A1 (en) * 1980-07-23 1982-01-27 COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. dite: Electric pumping aggregate with sliding vane and oil sealing
JPS59180095A (en) * 1983-03-30 1984-10-12 Toyoda Autom Loom Works Ltd Lubricating oil excessive supply preventing mechanism in compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 038 (M - 358) 19 February 1985 (1985-02-19) *

Also Published As

Publication number Publication date
EP1120568B1 (en) 2004-10-13
DE69633644T2 (en) 2005-02-17
DE69631310T2 (en) 2004-07-01
EP1120568A2 (en) 2001-08-01
DE69633644D1 (en) 2004-11-18
DE69631310D1 (en) 2004-02-19

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