| 摘要 |
PURPOSE:To increase the drive stroke of a damper, by controlling a control valve for introducing intake vacuum into an air mix camper drive device in accordance with the temperature of the passenger's compartment of a vehicle by means of a medium which expands and contracts in accordance with the temperature of the passenger's compartment. CONSTITUTION:The pressure of medium in a temperature sensing cylinder 8 within a temperature detecting section 10 increases and decreases in accordance with the temperature of the passenger's compartment of a vehicle, resulting in a diaphragm in a vacuum control section 7 being operated. With this arrangement, a diaphragm 5 in a drive section 4 is actuated to drive an air mix damper 3 so that the volume of cooling air is increased and decreased, and discharged air is changed. With this arrangement, it is possible to increase the drive stroke of the damper. |
