Variable displacement compressor

Details Variable displacement compressor Variable displacement compressor

1996-03-27

1997-04-01

Gluck, Richard E.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

F04B 128, F04B 4900

Patent

active

056160089

ABSTRACT:
A variable displacement compressor having a rotary shaft and a swash plate is described. The swash plate is mounted on the shaft and rotates integrally with the shaft. The swash plate tilts between a maximum inclined angle and a minimum inclined angle and is connected to a plurality of pistons. The inclined angle of the swash plate is altered by the difference between the pressure in a crank chamber and the pressure in a suction chamber. Each piston reciprocates inside a cylinder bore with a stroke determined by the inclined angle of the swash plate and compresses refrigerant gas, which includes oil mist. A spool is arranged adjacent to the swash plate on the shaft. On the shaft, a thrust bearing is provided between the swash plate and the spool, and a radial bearing is provided in the spool. The spool has an opening opposed to the swash plate. Grooves that allow the flow of refrigerant gas into the spool are formed at the opening in the walls of the spool.

REFERENCES:
patent: 4526516 (1985-07-01), Swain
patent: 5094590 (1992-03-01), Carella et al.
patent: 5173032 (1992-12-01), Taguchi et al.
patent: 5417552 (1995-05-01), Kayukawa et al.
patent: 5486098 (1996-01-01), Kimura

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