Compressor startup control

Details Compressor startup control Compressor startup control

1976-10-01

1978-01-17

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Plural separate sensing means for a single fluid controller

417 27, 417290, 417295, F04B 4902

Patent

active

040689808

ABSTRACT:
A positive displacement gas compressor includes an inlet throttling valve which has an actuator responsive to a pressure fluid signal for closing the throttling valve. A control circuit for supplying pressure fluid to close the throttling valve includes a time delay device and a pilot operated valve which vents the pressure fluid signal holding the throttling valve closed after a predetermined time period commencing with startup of the compressor.

REFERENCES:
patent: 2172751 (1939-09-01), Heinrich
patent: 2646205 (1953-07-01), Rosenschold
patent: 3424370 (1969-01-01), Law
patent: 3602610 (1971-08-01), Bloom
patent: 3788776 (1974-01-01), Post et al.
patent: 3860363 (1975-01-01), Silvern et al.
patent: 3961862 (1976-06-01), Edstrom et al.

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