| 摘要 |
PURPOSE:To prevent an apparent erroneous operation of a pressure switch for controlling a coolant compressor, and to prevent dew condensation on a window shield of a vehicle, by connecting a temperature switch in parallel to the pressure switch so that when the outside temperature lowers, the compressor stopping control mode of the pressure switch is made to be null. CONSTITUTION:When the outside temperature exceeds a predetermined temperature, a temperature switch 11 is turned off so that a compressor 1 in a cooling device is controlled by turning on and off a pressure switch 10 as usual, when the outside temperature lowers below the predetermined temperature, the temperature switch 11 is turned on to energize a magnetic clutch 9. With this arrangement an apparent coolant volume decreasing condition is built up, and therefore, even if the pressure switch 10 actuates to disable the operation of the compressor 1, the operating condition of the compressor 1 may be maintained to dehumidify the passenger's compartment of the vehicle. With this arrangement, even if the outside temperature lowers, the dehumidification may be made, thereby it is possible to ensure a safe drive for the vehicle. |
