Variable capacity vane compressor

Details Variable capacity vane compressor Variable capacity vane compressor

1989-10-30

1991-10-15

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, F04B 4900, F04B 4902

Patent

active

050569902

ABSTRACT:
A variable capacity vane compressor has a control element rotatable in response to the difference between suction pressure and control pressure for varying the compression starting timing and hence the capacity. A communication passage extends between the suction chamber and a high pressure chamber in which the control pressure is created. A spool valve opens and closes the communicating passage. An electromagnetic actuator generates an electromagnetic force to cause the spool valve to open the communication passage when energized. A control unit is arranged outside of the compressor and supplies the actuator with an external control signal for energizing the actuator.

REFERENCES:
patent: 2878753 (1959-03-01), Adams et al.
patent: 4441863 (1984-04-01), Hotta et al.
patent: 4715792 (1987-12-01), Nishizawa et al.
patent: 4776770 (1988-10-01), Nakatima et al.

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