Variable displacement compressor control valve arrangement

Details Variable displacement compressor control valve arrangement Variable displacement compressor control valve arrangement

1985-08-02

1986-08-19

Freeh, William L.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, F04B 128

Patent

active

046067051

ABSTRACT:
There is disclosed in a refrigerant compressor whose piston stroke and thereby displacement is controlled by crankcase-suction pressure differential, a control valve that is normally responsive to at least suction pressure to control such differential but is acted on by a solenoid above a prescribed compressor speed to increase the crankcase pressure to discharge pressure to effect minimum piston stroke and thereby minimum displacement to prolong compressor life.

REFERENCES:
patent: 3785754 (1974-01-01), Miller
patent: 4351152 (1982-09-01), Reynolds
patent: 4395199 (1983-07-01), Izami
patent: 4487109 (1984-12-01), Burandt
patent: 4494911 (1985-01-01), Davis
patent: 4526516 (1985-02-01), Swain
patent: 4533299 (1985-08-01), Swain

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