| 摘要 |
PURPOSE:To prevent a discharge temperature of a compressor which compresses refrigerant from rising exceedingly by reducing a air flow of a blower fan which supplies air over the outer surface of an evaporator at a time when compressed refrigerant reaches the preset temperature. CONSTITUTION:Refrigerant compressed by a compressor 1l is condensed by a condenser 3, than is stored in a liquid tank 5. Refrigerant is fed to an evaporator in a cooling unit 9 properly at a time through an expansion valve 7. After absorbing heat energy from air discharged from a blower 11, refrigerant becomes gaseous and is returned to the compressor 1 while the pressure is lowered and the temperature drops. In addition, a temperature detector 13 is arranged to detect a discharging temperature of the compressor 1. An air flow reduction device 101 is also arranged to reduce an air flow from the blower 11 at a time when the specified temperature is detected by the temperature detector 13, and the air flow reduction device 101 is, e.g. composed of a voltage drop device which drops the voltage to drive the blower fan. |
