(19)
(11) EP 1 217 215 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.02.2003 Bulletin 2003/09

(43) Date of publication A2:
26.06.2002 Bulletin 2002/26

(21) Application number: 01310845.1

(22) Date of filing: 21.12.2001
(51) International Patent Classification (IPC)7: F04C 18/344, F04C 29/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.12.2000 JP 2000391184
04.09.2001 JP 2001267792

(71) Applicant: Seiko Instruments Inc.
Chiba-shi, Chiba (JP)

(72) Inventors:
  • Sekiguchi, Hiroaki, c/o Seiko Instruments Inc.
    Chiba-shi, Chiba (JP)
  • Ijiri, Makoto, c/o Seiko Instruments Inc.
    Chiba-shi, Chiba (JP)

(74) Representative: Sturt, Clifford Mark et al
Miller Sturt Kenyon 9 John Street
London WC1N 2ES
London WC1N 2ES (GB)

   


(54) Gas compressor


(57) To provide a gas compressor capable of reducing the pressure loss of the oil containing high-pressure refrigerant gas and achieving an improvement in compressor performance. In a construction in which oil containing high-pressure refrigerant gas discharged from cylinder discharge holes passes through discharge chambers and discharge gas passages to be led to oil separation filters side attached to an oil separator, the discharge gas passages are linear, whereby the oil containing high-pressure refrigerant gas flows smoothly through the discharge gas passages, and the pressure loss of the oil containing high-pressure refrigerant gas is reduced. Further, the height of inlet openings of the discharge gas passages are set to be the same as the height of outlet openings, whereby the discharge gas passages extend horizontally and are of the shortest length, thereby further reducing the pressure loss of the high-pressure refrigerant gas.






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