Scroll type compressor having communication passage means with l

Details Scroll type compressor having communication passage means with l Scroll type compressor having communication passage means with l

1993-02-18

1995-03-07

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 556, 418100, F04C 1804, F04C 2902

Patent

active

053952235

ABSTRACT:
A scroll type compressor comprises an immovable scroll defining a spiral space, and a refrigerant is introduced into an outerhost zone of the spiral space. The compressor further comprises a movable scroll engaged with the immovable scroll such that the outermost zone of the spiral space is divided into an inner section and an outer section by an outermost portion of the movable scroll. The movable scroll is revolved around a center axis of the immovable scroll such that the inner and outer sections are alternatively displaced as a compression chamber toward a center of the immovable scroll, and a refrigerant inlet port of the inner section is defined by a termination of the outermost portion of the movable scroll. The termination is disengaged from and engaged with the immovable scroll during the revolution of the movable scroll to close and open the inlet port of the inner section. The immovable scroll has a communication passage formed in a base portion thereof, and the inner and outer section is in communication with each other through the communication passage only when the termination is disengaged from the immovable scroll so that the inlet port of the inner section is opened, whereby the refrigerant can be fed to the inner section not only through the inlet port thereof, but also through the communication passage until the termination is engaged with the immovable scroll so that the inlet port of the inner section is closed.

REFERENCES:
patent: 4303379 (1981-12-01), Hiraga et al.
patent: 4417863 (1983-11-01), Ikegawa et al.
patent: 5120205 (1992-06-01), Ban et al.
patent: 5145344 (1992-09-01), Haga et al.
patent: 5221198 (1993-06-01), Izumi et al.

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