| 摘要 |
PURPOSE:To improve a cooling effect, by installing such a circuit that drives and controls an inside-outside air change-over damper so as to be stopped at a position where air in a car room is partially mixed with the outside air and taken in, at the time of cooler system operation by outside air intake. CONSTITUTION:When a cooler switch 32 is closed in the state that an inside- outside change-over switch 31 is connected to an outside air intake side contact 31b, a relay contact 37b is closed, whereby a relay coil 41 is energized with a continuous rating current and the moving contact 36 is selected to the contact 34b. Therefore, a motor 33 is rotated, movable parts 36g and 36h of a position detector 36 is moved to a C direction and simultaneously an inside-outside air change-over damper 15 is moved to the side of an outside air inlet 14. At this time, the movable part 36f comes off a contact 36c, and when it is connected to a contact 36b, the relay coil 41 is unenergized because a relay 39 is in a state of being opened, thus the motor 33 is stopped. With this constitution, the damper 15 is stopped at a position 15c, and mixed air of outside air A and inside air B is made to flow into an air duct 12. |
