Refrigeration system having a compressor with an internally and

Details Refrigeration system having a compressor with an internally and Refrigeration system having a compressor with an internally and

1991-08-14

1992-12-08

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

417270, F25B 100

Patent

active

051687160

ABSTRACT:
A refrigerating system including a refrigerant circuit having a condenser, evaporator and wobble plate type compressor with a variable displacement mechanism. Two passages communicate between the crank chamber and the suction chamber in the cylinder block. A bellows is disposed in a first passage and controls the communication between the crank chamber and the suction chamber response to crank chamber pressure. A control valve is disposed in the second passage and controls communication between the crank chamber and the suction chamber in the second passage in response to a signal generated outside of the compressor. A control circuit controls the generation of the signal in response to thermodynamic characteristics related to the evaporator. The signal activates or deactivates the second control valve when the characteristic indicates a value beyond a predetermined range of values. This configuration enables the compressor to obtain better cool down characteristics in the passenger compartment of an automobile.

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