| 摘要 |
A refrigerating system includes a refrigerant circuit having a condensor (201), evaporator (203) and slant plate type compressor (10) with a variable displacement mechanism. Two passages (812,822) communicate between the crank chamber (13) and the suction chamber (141) in the cylinder block (12). A bellows (811) is disposed in a first passage (812) and controls the communication between the crank chamber and the suction chamber in response to crank chamber pressure. A control valve (821) is disposed in the second passage (822) 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 thermodyamic characteristics related to the evaporator (203). The signal activiates or deactivates the second control valve (821) when the charateristic 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. |
