| 摘要 |
PURPOSE:To prevent variation of room temperature even if the ventilation amount from the gap in a chassis increases by lowering the temperature of the air blown-off through ON/OFF operation of a compressor by a prescribed amount according to a car speed, in the air conditioner for controlling the temperature of blow-off air. CONSTITUTION:A movable contact 23 and a fixed contact 24 are not in contact at a prescribed car speed, for example at 80Km or below, and a contact 26 is opened, so the temperature of blow-off air is controlled by the sum of the resistance value of a rheostat 10, thermistor 9, and a resistor 17. When the car speed reaches 80Km or above, the contact 23 and 24 are brought into contact, and a relay 25 and a contact 26 are closed, and the resistor 17 is short-circuited, and the voltage in the partial voltage ratio of a resistor R3 and the sum of the resistance value of the temperature sensor 9 and the rheostat 10 is reduced by the portion of the resistance R1 and applied onto a transistor Tr1 and opens and closes the magnetic clutch 14 of a compressor 1 through a relay 13. Thus, the width of temperature is reduced according to the car speed, and the variation of the room temperature can be suppressed, even if the ventilation amount from the gap in the chassis increases in accordance with the car speed. |
