Variable capacity rotary compressor

Details Variable capacity rotary compressor Variable capacity rotary compressor

2006-07-04

2006-07-04

Trieu, Theresa (Department: 3748)

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

C417S221000, C417S223000, C417S410300, C418S029000, C418S060000, C418S178000, C148S639000

Reexamination Certificate

active

07070395

ABSTRACT:
A variable capacity rotary compressor to prevent an eccentric bush and a locking pin from being deformed or worn out due to a variance in a pressure of a compression chamber as a rotating shaft rotates. The compressor includes upper and lower compression chambers having different interior capacities thereof, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a common direction. Upper and lower eccentric bushes are fitted over the upper and lower eccentric cams, respectively, with a slot provided at a position between the upper and lower eccentric bushes. The locking pin operates to change a position of the upper or lower eccentric bush to a maximum eccentric position. Further, surfaces of parts around first and second ends of the slot are heat-treated, thus increasing a hardness thereof.

REFERENCES:
patent: 713301 (1902-11-01), Hagerty
patent: 1789842 (1931-01-01), Rolaff
patent: 4397618 (1983-08-01), Stenzel
patent: 4508680 (1985-04-01), Niino et al.
patent: 5115077 (1992-05-01), Matsuo et al.
patent: 5871342 (1999-02-01), Harte et al.
patent: 6531000 (2003-03-01), Takemura et al.
patent: 6860724 (2005-03-01), Cho et al.
patent: 2140089 (1984-11-01), None
patent: 01142282 (1989-06-01), None

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