Piston type variable displacement compressor

Details Piston type variable displacement compressor Piston type variable displacement compressor

1997-08-22

2000-11-07

Paschall, Mark

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

F04B 126

Patent

active

061427454

ABSTRACT:
A compressor has a refrigerant gas circulation passage selectively connected to and disconnected from an external refrigerant circuit. The compressor has a swash plate supported on a drive shaft for integral rotation with inclining motion with respect to the drive shaft which swash plate is coupled in driving relationship to a plurality of pistons which move reciprocatably within cylinder bores for compressing the gas. The swash plate is movable between a maximum inclined angle and a minimum inclined angle. A disconnecting valve disconnects the discharge chamber in the circulation passage from the external refrigerant circuit when the swash plate is at the minimum inclined angle. A bleed hole bleeds the refrigerant gas from the refrigerant circulation passage to the external refrigerant circuit to suppress rapid increase of the inclined angle when the disconnecting valve operates.

REFERENCES:
patent: 4526516 (1985-07-01), Swain et al.
patent: 4801248 (1989-01-01), Tojo et al.
patent: 4867649 (1989-09-01), Kawashima et al.
patent: 5112198 (1992-05-01), Skinner
patent: 5242274 (1993-09-01), Inoue
patent: 5529461 (1996-06-01), Kawaguchi et al.

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