Scroll compressor with unloader valve between economizer and suc

Details Scroll compressor with unloader valve between economizer and suc Scroll compressor with unloader valve between economizer and suc

1998-07-13

1999-12-07

Doerrler, William

Refrigeration

Automatic control

Refrigeration producer

622285, F25B 4100, F25B 4900

Patent

active

059963646

ABSTRACT:
A scroll compressor has an economizer injection line communicating into the scroll compressor chambers. An unloader valve selectively communicates the economizer injection line back to suction. In this arrangement, the fluid ports and passages necessary to achieve the economizer injection are also utilized to achieve suction bypass unloading, and thus the compressor and system design and construction are simplified.

REFERENCES:
patent: 3564865 (1971-02-01), Spencer et al.
patent: 4332144 (1982-06-01), Shaw
patent: 4787211 (1988-11-01), Shaw
patent: 5076067 (1991-12-01), Prenger et al.
patent: 5410889 (1995-05-01), Sjoholm et al.
patent: 5722257 (1998-03-01), Ishii et al.
patent: 5816055 (1998-10-01), Ohman

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