Scroll type compressor

Details Scroll type compressor Scroll type compressor

1991-09-27

1993-08-17

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417310, F04B 4900

Patent

active

052363163

ABSTRACT:
A scroll type compressor has bypass ports communicating with chambers which are being compressed. The bypass parts are bored in an end plate of a stationary scroll. A capacity control block contained inside a bypass passage has the bypass ports communicating with a suction chamber formed in a housing. A piston valve for opening and closing this bypass passage and control valve which senses a discharge pressure and a suction pressure and generates a control pressure for operating the piston valve is formed separately from the stationary scroll. The capacity control block is installed in close contact with the outer surface of the end plate of the stationary scroll, thus controlling the output capacity of the compressor in a range from 0% to 100%.

REFERENCES:
patent: 4840545 (1989-06-01), Moilanen
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: 4904164 (1990-02-01), Mabe et al.
patent: 5049044 (1991-09-01), Hirano
patent: 5059098 (1991-10-01), Suzuki et al.

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