Variable capacity piston- operated refrigerant compressor with a

Details Variable capacity piston- operated refrigerant compressor with a Variable capacity piston- operated refrigerant compressor with a

1999-03-08

2000-11-21

Freay, Charles G.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

184 617, F04B 126

Patent

active

061493988

ABSTRACT:
A variable capacity piston-operated refrigerant compressor having a cylinder block provided with cylinder bores in which single-headed pistons are reciprocated to compress a refrigerant gas, and a housing assembly arranged on opposite ends of the cylinder block to define a crank chamber for receiving a cam plate mounted around a rotatably supported drive shaft to cause the reciprocating motion of the pistons in response to the rotation thereof together with the drive shaft, the cam plate further controlling the stroke of the reciprocation of the pistons by the use of a differential pressure between a suction pressure acting on working ends of the respective pistons via a suction chamber and a pressure in the crank chamber communicating with a discharge chamber via a gas supply passage for supplying the discharge pressure refrigerant gas containing therein a lubricating oil which is separated from the refrigerant gas by the oil separating means arranged in the gas supply passage immediately before the refrigerant gas enters the crank chamber. The separated lubricating oil is stored in the crank chamber to lubricate all movable elements in the crank chamber.

REFERENCES:
patent: 5009286 (1991-04-01), Ikeda et al.
patent: 5088897 (1992-02-01), Kawai et al.
patent: 5882180 (1999-03-01), Kawaguchi et al.
patent: 6015269 (2000-01-01), Ota et al.

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