| 摘要 |
PURPOSE:To make an inside/outside air switching box compact by installing, at the center of a damper, the pivotal installation supporting point of the damper pivotally installed so that one direction passage communicates to the third direction passage when one among the first - third direction wind passage is closed. CONSTITUTION:In outside air mode, an inside/outside air switching damper 9 is revolved, having a supporting shaft 92 as center, and an outside-air introducing port 11 is opened, and an inside-air introducing port 10 is closed, and then outside air 6 flows into a blowing fan 7A. In inside air mode, the inside/outside air switching damper 9 revolves in the opposite direction in case of outside air mode, and the inside air introducing port 10 is opened, and the outside air introducing port 11 is closed, and then inside air 5 flows into the blowing fan 7A. In the damper 9, the pivotal installation point 91 in an intermediate part 91A is pivotally installed into an inside/outside air switching box 8, having a supporting shaft 92 as center, and the switching box 8 can be made compact, and the operation space for a switching lever can be reduced. |
