JPS57158117A - Automatic air conditioner - Google Patents

Abstract

PURPOSE:To keep such a comfortable humidity that no dewing occurs on the window of a vehicle, by detecting the temperature outside the vehicle chamber and by performing humidification only when it is judged from a previously memorized saturated steam pressure characteristic corresponding to the temperature of the external air that the relationship between the detected temperature and the temperature of the vehicle chamber does not act to generate saturated steam. CONSTITUTION:When a temperature is set by the driver, information about the temperature set by a resistor 2, the temperatures detected by an internal and an external air sensors 3, 4, the degree of opening of an air mix gate 5 detected by a feedback potentiometer 6 and the humidity of a vehicle chamber detected by a humidity sensor 7 is selectively applied to a control section 1 through a multiplexer channel 8 and an A/D converter 9. The degree of opening of an air mix gate 5 for controlling the quantity of heat to be supplied into the vehicle chamber, a supplied voltage for a blower motor 10 for controlling the quantity of supplied air and the opening or closing of an intake gate 11, a vent gate 12 and a floor gate 13 are for controlling air passages are regulated by the control section 1 depending on the difference between the set temperature and the temperature of the vehicle chamber to approximate the latter to the former. The control section 1 regulates a humidifier 22 on the basis of the result of the judgment of the humidity.