| 摘要 |
<p>PURPOSE:To control a compressor more precisely, by controlling a displacement of a refrigerant discharged from the compressor according to a heat load of an evaporator. CONSTITUTION:A signal from a temperature sensor 62 for detecting a temperature of a refrigerant flowing into a suction port and a signal from a pressure sensor 63 for detecting a pressure are inputted to a computing means 64 to compute a super heat value of the refrigerant. The super heat value computed is inputted to a comparing means 65 to compare same with a reference super heat value data. Then, the compared value is inputted to a control means 67 for controlling solenoid valves 57 and 58 to control a pressure value of a fluid to be supplied into a crank chamber to a desired value. Accordingly, a displacement of the refrigerant discharged from a compressor is controlled according to a heat load of an evaporator, thereby controlling the compressor more precisely according to the condition of the heat load of the evaporator.</p> |
