| 摘要 |
PURPOSE:To control the operation temperature level of a compressor so as to improve the energy efficiency for an apparatus as a whole, by changing the temperature level for stopping the compressor in accordance with the change in the ambient temperature. CONSTITUTION:A thermistor Th1 for detecting the atmospheric temperature, room temperature, etc. and a thermistor Th2 for detecting the temperature of a cooler 3 are provided and an electric current from a power source B is fed thereto via resistors R1, R2 respectively. When the temperature detected by the thermistor Th1 and the voltage of the detected output is higher than the anode side voltage of a diode D1, an operational amplifier CP1 is inputted via a diode D2 that is then turned ON, while when the detected temperature becomes a prescribed value or over, the voltage determined by the voltage dividing ratio of resistors R3 and R4 is inputted in the diode D1. The deviation of the output of the CP1 and the output of the Th2 is determined in an operational amplifier CP2, and a relay RY is controlled by its output and a magnet clutch MC is actuated and controlled. |
