Global patent index - EP 0971128 A3

EP 0971128 A3 2000-08-30 - Positive-displacement-type refrigerant compressor with a novel oil-separating and lubricating system

Title (en)

Positive-displacement-type refrigerant compressor with a novel oil-separating and lubricating system

Title (de)

Verdrängungskompressor für Kältemittel mit Ölabscheidungs- und Schmiersystem

Title (fr)

Compresseur volumétrique pour réfrigérant avec système de séparation d'huile et de lubrification

Publication

EP 0971128 A3 (EN)

Application

EP 99113594 A

Priority

  • JP 19461698 A
  • JP 9644899 A

Abstract (en)

[origin: EP0971128A2] A positive-displacement-type refrigerant compressor having a compression chamber, in which a refrigerant introduced from a suction system is compressed and discharged as a compressed refrigerant at a high pressure, and an oil-separating and lubricating system for lubricating an interior of the compressor by an oil component separated from the refrigerant, which has an oil-separating unit to separate the oil from the compressed refrigerant, an oil-storing chamber to store the separated oil, an oil-supply passage to supply the oil from the oil-storing chamber to the suction system, a valve assembly arranged in the oil supply passage for regulating an amount of flow of the oil from the oil-storing chamber to the suction system, which includes a first valve chamber, a movable valve actuating element in the first valve chamber to actuate a valve element to open and close a valve port which provides a fluid communication between the upstream and downstream of the oil-supply passage. The valve element moves in response to a movement of the valve actuating element and closes the valve port when the pressure introduced from the compression chamber and acting on the movable valve actuating element is overcome by an elastic restoring force acting on the movable valve actuating element. <IMAGE>

IPC 1-7 (main, further and additional classification)

F04B 39/02; F04B 27/10; F04C 29/02

IPC 8 full level (invention and additional information)

F04B 39/04 (2006.01); F04B 39/02 (2006.01); F04B 39/16 (2006.01)

CPC (invention and additional information)

F04B 39/16 (2013.01); F04B 39/0207 (2013.01)

Citation (search report)

  • [A] US 5580224 A 19961203 - IKEDA HAYATO [JP], et al
  • [A] US 5733107 A 19980331 - IKEDA HAYATO [JP], et al
  • [PDA] US 5823294 A 19981020 - MIZUTANI HIDEKI [JP], et al
  • [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 530 (M - 1485) 24 September 1993 (1993-09-24)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 480 (M - 1321) 6 October 1992 (1992-10-06)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 155 (M - 1104) 18 April 1991 (1991-04-18)
  • [DA] PATENT ABSTRACTS OF JAPAN vol. 018, no. 644 (M - 1718) 7 December 1994 (1994-12-07)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0971128 A2 20000112; EP 0971128 A3 20000830; JP 2000080982 A 20000321

INPADOC legal status

2001-06-20 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20010419

2001-05-16 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: DE FR IT

2000-08-30 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-08-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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- Free Format Text: AL;LT;LV;MK;RO;SI

2000-08-23 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7F 04B 39/02 A, 7F 04B 27/10 B, 7F 04C 29/02 B

2000-01-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990708

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR IT

2000-01-12 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI