| 摘要 |
PURPOSE:To prevent a windshield from collecting moisture and as well to prevent the lowering of cooling capacity, by changing the position of a door upon suction of defroster air. CONSTITUTION:An inside and outside air change-over door 7 directly coupled to a vacuum actuator 8, takes its vacuum position when air valves AV1, AV2 are turned on, so that it entirely introduces the outside air, but shuts off vacuum when the air valves are turned off, so that the inside air is circulated. When the air valve AV1 is turned on but the air valve AV2 is turned off, the door 7 takes a position where the outside air is introduced in half. The wiring line between the air valve AV2 and the controller 12 is grounded through a defroster switch (DEFSW) 11, and the air valve A1 closes the contact when the blow-off port takes its DEF position so that the door 7 takes the position where the outside air is introduced in half. |
