JPS57138414A - Control of car air conditioner - Google Patents

Abstract

PURPOSE:To prevent deterioration of comfortableness accompanied with removal of blur by constituting the air conditioner for car which automatically controls the adjusted temperature value of a heat exchanging means according to the condition of air conditioning so as to compulsorily raise-up the adjusted temperature value after estimating the degree of blur of a window glass. CONSTITUTION:The car-interior temperature 18, outside air temperature 19, insolation amount 21, room-temperature setting device 21 signal, and wind- amount setting device 22 signal are entered into a microcomputer 25 and stored. The temperature of the air stream blown-out from a ventilating duct 10 necessary for maintaining the car interior at a prescribed temperature according to the car-interior environment is calculated. When a blow-out port switching damper 24 is operated to the blowing-out side of a defroster, the outside temperature and the set standard value are compared, and if the outside temperature is lower and the wind-amount above a prescribed value is required, the necessary blow- out temperature is reset again to the higher standard value, and the defroster blow-out instruction signal of the damper 15 is output. Thus, deterioration of the car-interior environment accompanied with the operation of the defroster can be prevented.