| 摘要 |
PURPOSE:TO obtain the optimum and simplified operation of a car air-conditioner by adapting the drive part to be controlled selectively even by the output signal from a manual operation part for continuously adjusting various doors. CONSTITUTION:For automatic operation, a changeover switch 39 is on by the operation of an operation part 21, and output signals in accordance with the output of an operational amplifier are given to actuators 12 and 14 for controlling the opening degree of an air-mix door 5 and a mode-change door 10. When the operation is given from FACE to DEF not to be automatic, the output voltage of a mode- change variable resistance 20 is gradually reduced. The difference between this reduced voltage and the reference voltage is detected for controlling opening degrees of the mode-change door 10 between FACE and FOOT via a changeover switch 39 and a defrost-change door 9 between FOOT and DEF in accordance with the output of the detection. This construction permits to obtain the optimum and simplified operation of a car air-conditioner for promoting the comfortableness. |
