Two-stage rotary compressor

Details Two-stage rotary compressor Two-stage rotary compressor

2007-09-27

2008-10-21

Denion, Thomas (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

C418S011000, C418S149000, C418S181000

Reexamination Certificate

active

07438540

ABSTRACT:
In a two-stage rotary compressor of the present invention, an oil supply hole connecting an oil reservoir on a bottom portion in a closed vessel to a suction port formed in a lower supporting member is provided in the lower supporting member attached to the lower side of a high stage side rotary compressing element, and a necessary amount of oil is supplied into return refrigerant gas sucked into the high stage side rotary compressing element through this oil supply hole. Thus an outer circumferential surface of a roller, which eccentrically rotates in a cylinder, is lubricated to protect it from wear. Additionally, the gas seal properties between an inner circumferential surface of the cylinder and an outer circumferential surface of the roller and between a roller end surface and a partition plate and between a roller end surface and a cylinder end surface, are increased whereby the compression efficiency of the refrigerant gas can be improved. Further, the lower supporting member is provided with a bearing portion as well as a muffling chamber, and also a cover plate, which closes an opening surface of the muffling chamber. Further a concave groove is provided on a lower end surface of the bearing portion in the circumferential direction and an O ring is attached to the groove and gas-sealing is made by interposing a gasket in a connection portion between the lower supporting member and the cover plate. Accordingly, concave grooving work for O ring attachment in the outer circumference of the bearing portion and cutting work in the upper supporting member, which have been conventionally performed, can be eliminated.

REFERENCES:
patent: RE30994 (1982-07-01), Shaw
patent: 4487562 (1984-12-01), Inagaki et al.
patent: 5322424 (1994-06-01), Fujio
patent: 5518381 (1996-05-01), Matsunaga et al.
patent: 5545021 (1996-08-01), Fukuoka et al.
patent: 5564917 (1996-10-01), Leyderman et al.
patent: 5616017 (1997-04-01), Iizuka et al.
patent: 5674061 (1997-10-01), Motegi et al.
patent: 6099279 (2000-08-01), Kohsokabe et al.
patent: 6210130 (2001-04-01), Kakuda et al.
patent: 6318981 (2001-11-01), Ebara et al.
patent: 6352418 (2002-03-01), Kohsokabe et al.
patent: 6581408 (2003-06-01), Tadano et al.
patent: 7381039 (2008-06-01), Sato
patent: 2002/0033295 (2002-03-01), Korenjak et al.
patent: 2003/0068236 (2003-04-01), Tadano et al.
patent: 2004/0116009 (2004-06-01), Tawa et al.
patent: 2006/0171833 (2006-08-01), Sato
patent: 1 209 357 (2002-05-01), None
patent: 1 284 366 (2003-02-01), None
patent: 1 312 880 (2003-05-01), None
patent: 2294587 (1990-12-01), None
patent: 08247062 (1996-09-01), None
patent: 2000 104688 (2000-04-01), None
patent: 2003 097479 (2003-04-01), None
patent: 2003097479 (2003-04-01), None

Affiliated with

Also associated with

Rating

Two-stage rotary compressor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-stage rotary compressor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-stage rotary compressor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4013066