Apparatus for changing capacity of scroll compressor with...

Details Apparatus for changing capacity of scroll compressor with... Apparatus for changing capacity of scroll compressor with...

2006-05-30

2006-05-30

Thorpe, Timothy S. (Department: 3746)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C417S310000, C417S410500, C418S055600, C418S055100

Reexamination Certificate

active

07052255

ABSTRACT:
An apparatus for changing capacity of scroll compressor comprises: a seal member movably installed on one of facing surfaces of a fixed scroll so as to seal a compression space made by the fixed scroll and orbiting scroll; a back pressure passage formed to be communicated from a point, where the seal member is contacted, to an outer circumferential surface of fixed scroll; an exhaust pipe installed on outer circumferential surface of the fixed scroll to be communicated with back pressure passage; and an exhaust pipe opening/closing valve installed on center part of exhaust pipe to open/close the exhaust pipe selectively, and thereby, sealability can be improved and low capacity can be outputted without decelerating orbiting scroll in low capacity operation.

REFERENCES:
patent: 5076771 (1991-12-01), Ban et al.
patent: 5520526 (1996-05-01), Fujio
patent: 5897299 (1999-04-01), Fukunaga
patent: 6074185 (2000-06-01), Protos
patent: 6457948 (2002-10-01), Pham
patent: 2002/0098102 (2002-07-01), Gennami et al.
patent: 1154156 (1997-07-01), None
patent: 03074590 (1991-03-01), None
patent: 05296169 (1993-11-01), None
patent: 06101663 (1994-04-01), None

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