Scroll compressor unloader valve

Details Scroll compressor unloader valve Scroll compressor unloader valve

1993-02-26

1994-11-08

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417310, F04B 4900

Patent

active

053622103

ABSTRACT:
A hermetic scroll-type compressor including a housing at discharge pressure, fixed and orbiting scroll members, a frame member having a thrust surface adjacent the orbiting scroll member back surface, and a crankshaft coupled to the orbiting scroll member. A back surface of the orbiting scroll member is exposed to discharge pressure to cause the orbiting scroll member to axially comply with the fixed scroll member. An internal pressure relief valve is connected within the housing to the suction space between the scrolls to compensate for moments of high discharge pressure and relieve orbiting scroll member over loading on the fixed scroll member.

REFERENCES:
patent: 4347915 (1982-09-01), Cooper
patent: 4431388 (1984-02-01), Eber et al.
patent: 4560330 (1985-12-01), Murayama
patent: 4904164 (1990-02-01), Mabe et al.
patent: 5090880 (1992-02-01), Mashimo
patent: 5169294 (1992-12-01), Barito
Scroll Compressor Design and Application Characteristics for Air Conditioning . . . , The Institute of Refrigeration, Nov. 1990.

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