Scroll compressor having an axial compliance pressure chamber

Details Scroll compressor having an axial compliance pressure chamber Scroll compressor having an axial compliance pressure chamber

1995-02-21

1996-12-31

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, F04C 1804, F04C 2700

Patent

active

055888208

ABSTRACT:
A scroll compressor having a housing, a fixed scroll stationary on said housing, an orbiting scroll nested with the fixed scroll and being mounted on the eccentric of the compressor crankshaft for orbital motion about the longitudinal axis of the compressor, the base of the orbiting scroll having an annular groove formed in the outside or low pressure side thereof, a passage formed through the base of the orbiting scroll and placing the groove in fluid communication with an intermediate section of the pressure continuum for providing an axial compliance force against the base of the orbiting scroll and urging the wrap tips thereof into sealing engagement with the adjacent base of the fixed scroll, an annular seal positioned in the groove and having an annular web provided with a substantially planar contact side positioned in sliding, sealing contact with a sealing surface of housing and having annular elastomeric sealing components slidingly sealed against the walls of the groove to provide an axial compliance pressure chamber which is sealed from ambient pressures.

REFERENCES:
patent: 3600114 (1971-08-01), Dvorak et al.
patent: 4645437 (1987-02-01), Sakashita et al.
patent: 5129798 (1992-07-01), Crum et al.

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