Variable displacement compressor passive destroker

Details Variable displacement compressor passive destroker Variable displacement compressor passive destroker

1988-06-09

1989-10-10

Freeh, William L.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417269, 417294, F04B 126

Patent

active

048728144

ABSTRACT:
A passive destroker mechanism operated by centrifugal force is added to a variable stroke axial piston wobble plate refrigerant compressor. The destroker operates at a predetermined compressor speed to communicate the discharge side of the compressor with its sealed crankcase to thereby provide a controlled discharge gas bleed thereto to destroke the compressor to a desired displacement. Then after the speed is reduced below such trigger speed, the destroker mechanism operates to return the compressor to its normal stroke control condition.

REFERENCES:
patent: 2706384 (1955-04-01), Schott
patent: 3289590 (1966-12-01), Hutcheon
patent: 3785754 (1574-01-01), Miller
patent: 4351152 (1982-09-01), Reynolds et al.
patent: 4395199 (1983-07-01), Izumi et al.
patent: 4487109 (1984-12-01), Burandt et al.
patent: 4494911 (1985-01-01), Davis
patent: 4526516 (1985-07-01), Swain et al.
patent: 4533299 (1985-08-01), Swain et al.
patent: 4606705 (1986-08-01), Parekh

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