Piston type variable displacement compressor

Details Piston type variable displacement compressor Piston type variable displacement compressor

1994-12-22

1996-06-25

Korytnyk, Peter

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417269, F04B 129

Patent

active

055294618

ABSTRACT:
A compressor has an internal refrigerant gas passage selectively connected to and disconnected with an external refrigerant circuit separately provided from the compressor. The compressor has a plurality of pistons reciprocable in a plurality of cylinder bores in a housing for compressing gas. The compressor comprises a drive shaft 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. A rotary valve is disposed in the middle of the internal refrigerant gas passage for synchronously rotating with the drive shaft. The rotary valve has a refrigerant supply passage for sequentially supplying the refrigerant gas in the internal refrigerant gas passage to each cylinder bore. A disconnecting device disconnects the external refrigerant circuit from the internal refrigerant gas passage when the swash plate is at the minimum inclined angle.

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