Refrigeration – Processes – Compressing – condensing and evaporating
Patent
1989-08-18
1991-06-25
Wayner, William E.
Refrigeration
Processes
Compressing, condensing and evaporating
622283, 417222R, F04B 126
Patent
active
050256360
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 bellow 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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Process Instruments & Control, Considine, 1957 pp. 11-17, 11-18.
Sanden Corporation
Wayner William E.
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