Variable displacement vane-type rotary compressor

Details Variable displacement vane-type rotary compressor Variable displacement vane-type rotary compressor

1989-09-14

1991-06-25

Smith, Leonard E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, F04B 4902

Patent

active

050262572

ABSTRACT:
In a variable displacement vane-type rotary compressor, a rotational displacement of an adjust member relative to a front member fixedly closing a front end of a cam ring varies a compression starting point of a rotary vane in a working chamber formed in the cam ring. The front member is formed with an induction port and a bypass port, and the adjust member is formed with a bypass recess. The induction port and the bypass recess are in communication with each other in the working chamber irrespective of a position of the vane under all of the rotational displacement of the adjust plate to establish a communication between the induction port and the bypass port in the working chamber irrespective of the position of the vane when the bypass port overlaps with the bypass recess.

REFERENCES:
patent: 4813854 (1989-03-01), Nakajima
patent: 4815945 (1989-03-01), Nakajima et al.
patent: 4859154 (1989-08-01), Aihara et al.
patent: 4865524 (1989-09-01), Nakajima et al.
patent: 4869652 (1989-09-01), Nakajima et al.
patent: 4878814 (1989-11-01), Nakajima et al.
patent: 4890985 (1990-01-01), Sugiura

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