Piston type variable displacement compressor

Details Piston type variable displacement compressor Piston type variable displacement compressor

1995-05-10

1997-10-28

Koczo, Michael

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417295, F04B 129

Patent

active

056811500

ABSTRACT:
A compressor has a swash plate tiltable between a maximum and minimum inclining angles with respect to an axis of the drive shaft according to a difference between pressures in a crank chamber and a suction chamber. An electromagnetic valve is disposed in a pressure passage, and opens or closes the pressure passage according to instruction of an external computer. This instruction is based on an operation status of the compressor so that the electromagnetic valve adjusts the pressure in the crank chamber. The pressure passage connects the crank chamber and the suction chamber. The swash plate is inclined toward the maximum inclining angle when the pressure passage is open to release the pressure in the crank chamber to the suction chamber. The swash plate is inclined toward the minimum inclining angle when the pressure passage is closed to increase the pressure in the crank chamber. A disconnecting element is disposed between the external circuit and the suction chamber to disconnect the external circuit with the suction chamber in association with the swash plate driven to the minimum inclining angle.

REFERENCES:
patent: 4801248 (1989-01-01), Tojo et al.
patent: 4913626 (1990-04-01), Terauchi
patent: 5017096 (1991-05-01), Sugiura et al.
patent: 5105728 (1992-04-01), Hayase et al.
patent: 5173032 (1992-12-01), Taguchi et al.
patent: 5577894 (1996-11-01), Kawagchi et al.
patent: 5584670 (1996-12-01), Kawaguchi et al.

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