Slant plate type refrigerant compressor with variable displaceme

Details Slant plate type refrigerant compressor with variable displaceme Slant plate type refrigerant compressor with variable displaceme

1992-06-22

1993-09-07

Bertsch, Richard A.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, F04B 126

Patent

active

052422755

ABSTRACT:
A slant plate type refrigerant compressor, such as a wobble plate type refrigerant compressor, with a capacity or displacement adjusting mechanism is disclosed. The capacity adjusting mechanism includes a valve device having an expandable/contractable bellows responsive to crank chamber pressure and a valve element fixedly attached to one end of the bellows to directly control the closing and opening of a passageway which connects a crank chamber and suction chamber. The bellows has a first effective pressure receiving cross-sectional area responsive to crank chamber pressure. The valve element has a second effective pressure receiving cross-sectional area responsive to suction chamber pressure. The second effective pressure receiving cross-sectional area of the valve element is approximately equal to or greater than 80% of the first effective pressure receiving cross-sectional area of the bellows so that the range of variation in the suction chamber pressure is sufficiently decreased during the capacity control stage of operation of the compressor, thereby controlling the air conditioning in a passenger compartment of an automobile in an efficient and effective manner.

REFERENCES:
patent: 5094589 (1992-03-01), Terauchi et al.

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