Clutchless piston type variable displacement compressor

Details Clutchless piston type variable displacement compressor Clutchless piston type variable displacement compressor

1994-12-21

1997-02-18

Thorpe, Timothy

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417295, F04B 129

Patent

active

056036108

ABSTRACT:
A compressor having an internal refrigerant gas passage selectively connected to and disconnected from an external refrigerant circuit separately provided from the compressor is described. The compressor has a plurality of pistons reciprocable in a plurality of cylinder bores in a housing for compressing gas supplied from the external refrigerant circuit to the internal refrigerant gas passage. A drive shaft is rotatably supported by the housing. A swash plate is supported on the drive shaft for integral rotation with inclining motion with respect to the drive shaft. The swash plate is movable between a maximum inclined angle and a minimum inclined angle. The disconnecting device disconnects the internal refrigerant gas passage from the external refrigerant circuit when the swash plate is at the minimum inclined angle. The internal refrigerant gas passage includes a first passage which connects a crank chamber and a suction chamber to deliver the refrigerant gas from the crank chamber to the suction chamber. A control valve detects the pressure in the first passage to control the inclined angle of the swash plate.

REFERENCES:
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patent: 5000666 (1991-03-01), Esaki
patent: 5032060 (1991-07-01), Kobayashi et al.
patent: 5105728 (1992-04-01), Hayase et al.
patent: 5173032 (1992-12-01), Taguchi et al.
patent: 5259736 (1993-11-01), Terauchi
patent: 5370503 (1994-12-01), Terauchi

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