| 摘要 |
PURPOSE:To make it possible to maintain actual temperature of blown air at an approximate desired blown air temperature accurately without detecting the position and moving amount of an air-mixing door by a method wherein such constitution is made that the air-mixing door is driven until the difference between a real temperature and a desired temperature of blown air comes within a specified range. CONSTITUTION:In an arithmetic control device 44, an operation signal from a room temperature setting unit 45 and detected signals from an atmospheric air sensor 46, an insolation sensor 47 and a room temperature sensor 48 are input respectively, and a desired blown air temperature is calculated in a circuit 53. The actuator 55 of air-mixing doors 30, 32 is controlled according to the calculation result. In this case, a detected signal from a blown air temperature sensor 49 is also input in the arithmetic control device 44. A circuit 54 which calculates the difference in temperature between the actual blown air temperature and the desired blown air temperature while making calculation for driving and stopping the air-mixing doors 30, 32 according to the calculation result is provided. Then a circuit 56 which drives and stops the actuator 55 according to the output signal of the circuit 54 is provided. |
