Scroll type compressor

Details Scroll type compressor Scroll type compressor

1991-08-30

1993-03-16

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417299, F04B 4900

Patent

active

051939878

ABSTRACT:
A scroll type compressor has a pair of bypass ports which communicate with a chamber being compressed which ports are bored in an end plate of a stationary scroll. An inner surface of a capacity control block of the compressor is separate from the stationary scroll and abuts against the outer surface of the end plate of the stationary scroll, thus forming a recessed portion which communicates with the pair of bypass ports therebetween. One cylinder of the compressor communicates with a suction chamber in a housing and is provided in the capacity control block and a piston operating by a control pressure in accordance with a load of the compressor is disposed slidably in the cylinder. A communicaton hole which communicates with the recessed chamber is opened and closed by the piston, thereby controlling the output capacity of the compressor in the range from 0 to 100%.

REFERENCES:
patent: 4846633 (1989-07-01), Suzuki et al.
patent: 4886425 (1989-12-01), Itahana et al.
patent: 4890987 (1990-01-01), Sato et al.
patent: 5059098 (1991-10-01), Suzuki et al.

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