Volume control system for compressor unit

Details Volume control system for compressor unit Volume control system for compressor unit

1978-10-20

1980-08-26

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417302, F04B 4902, F04B 4906, F04B 4908

Patent

active

042193125

ABSTRACT:
In a compressor unit of a type wherein the ratio of delivery pressure relative to intake pressure, i.e., pressure ratio, is required to be as uniform as possible during unloaded and loaded operating conditions, as is in screw compressors of dry type, solenoids are used to drive an intake throttle valve and a pressure relief valve in such a manner that, when the throttle valve is closed, the pressure relief valve is opened to avoid an increase of the pressure ratio. When signals are produced to close the throttle valve and open the pressure relief valve, the solenoids are instantanously operative to close the throttle valve and open the pressure relief valve.

REFERENCES:
patent: 2234488 (1941-03-01), Dick
patent: 3367562 (1968-02-01), Persson et al.
patent: 3448916 (1969-06-01), Fraser

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