Variable capacity compressor having a widened variable range of

Details Variable capacity compressor having a widened variable range of Variable capacity compressor having a widened variable range of

1989-05-08

1990-08-14

Hepperle, Stephen M.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, F04B 4900

Patent

active

049483455

ABSTRACT:
A variable capacity compressor having a cylinder defining compression spaces therein. A control element is rotatable substantially in response to the difference between low pressure supplied from a suction chamber and control pressure created from high pressure supplied from a discharge pressure chamber for varying compression starting timing in the compression spaces and hence the capacity of the compressor. A capacity-reducing valve is operable in response to the control pressure for causing pressure within the least one of the compression spaces to leak into a low pressure side when the control element is in such an extreme position as to minimize the capacity of the compressor, to thereby further retard the compression starting timing and hence reduce the compressor capacity.

REFERENCES:
patent: 4272227 (1981-06-01), Woodruff
patent: 4566863 (1986-01-01), Goto et al.
patent: 4715792 (1987-12-01), Nishizawa et al.
patent: 4744732 (1988-05-01), Nakajima et al.
patent: 4846632 (1989-07-01), Suzuki et al.

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