Pumps – Three or more cylinders arranged in parallel – radial – or...
Patent
1998-10-20
2000-09-19
Wolfe, Willis R.
Pumps
Three or more cylinders arranged in parallel, radial, or...
4172221, F01B 302, F04B 112, F04B 2708
Patent
active
061202592
ABSTRACT:
A swash plate type compressor comprises a case including a cylindrical cylinder block; a drive shaft installed in the case and rotatable about its axis; a swash plate carried by the drive shaft s and rotatable together therewith; a cylindrical rear housing having refrigerant intake and exhaust chambers defined therein; and a sealing structure arranged between the cylinder block and the rear housing to assure a hermetical sealing therebetween. The sealing structure comprises a rear annular flat end possessed by the cylinder block; a front annular flat end possessed by the rear housing and attached to the rear annular flat end; an annular groove formed in one of the rear and front annular flat ends, the annular groove consisting of mutually merged first and second annular recesses, the first annular recess being positioned radially inside of the second annular recess and having a deeper bottom than the second annular recess; a valve plate interposed between the cylinder block and the rear housing having a peripheral portion thereof received and compressed in the first annular recess; and a seal ring received and compressed in the second annular recess.
REFERENCES:
patent: 4416190 (1983-11-01), Ishizuka
patent: 4544332 (1985-10-01), Shibuya
patent: 5044892 (1991-09-01), Pettitt
patent: 5370505 (1994-12-01), Takenaka et al.
patent: 5407328 (1995-04-01), Kimura et al.
patent: 5706716 (1998-01-01), Umemura
patent: 5749712 (1998-05-01), Umemura
Kawachi Masaki
Miyaji Toshikatsu
Calsonic Corporation
Wolfe Willis R.
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