Sliding-vane rotary compressor with displacememt-adjusting mecha

Details Sliding-vane rotary compressor with displacememt-adjusting mecha Sliding-vane rotary compressor with displacememt-adjusting mecha

1987-09-15

1989-04-11

Tanner, Harry B.

Refrigeration

Automatic control

Responsive to vehicle body motion or traction

62209, 622283, 622285, 62230, 62243, B60H 132, F25B 100

Patent

active

048194409

ABSTRACT:
A sliding-vane rotary compressor includes a first control valve responsive to the pressure in a low pressure chamber for adjusting the rate of communication between a high pressure side and a low pressure side, and a second control valve operative in the same manner as the first control valve under the control of an external signal. With this construction, an optimum displacement control of the compressor is achieved. Also disclosed is an apparatus for controlling a variable displacement compressor, in which a solenoid valve is controlled depending on internal and external thermal load conditions of the compressor for selectively blocking fluid communication between high and low pressure sides.

REFERENCES:
patent: 4132086 (1979-01-01), Kountz
patent: 4226090 (1980-10-01), Horian
patent: 4561260 (1985-12-01), Nishi et al.
patent: 4698977 (1987-10-01), Takahashi

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