Patent ID: 8176742

Claim:
A method for controlling an intake of an air-conditioner of a vehicle, the air-conditioner comprising: an air-conditioner casing ( 100 ) having an evaporator ( 110 ) and a heater core therein, with a defrost vent ( 101 ), a face vent ( 102 ), and a floor vent ( 103 ) formed in an outlet side of the air-conditioner casing; a blower ( 130 ) provided on an inlet side of the air-conditioner casing ( 100 ); and an intake ( 200 ) comprising a housing ( 210 ) which is installed to cover the blower ( 130 ) and has an outdoor-air inlet port ( 211 ), an indoor-air inlet port ( 212 ), and a subsidiary indoor-air inlet port ( 213 ) at predetermined positions in the housing, a main door ( 220 ) which rotates about a main-door drive shaft ( 221 ) while tracing an arc, thus opening or closing the outdoor-air inlet port ( 211 ) or the indoor-air inlet port ( 212 ), a subsidiary door ( 230 ) which rotates about a subsidiary-door drive shaft ( 231 ) to open or close the subsidiary indoor-air inlet port ( 213 ), and drive means for driving the main door ( 220 ) and the subsidiary door ( 230 ), the method comprising: a-1) step (S 1 ) at which the main door ( 220 ) of the intake ( 200 ) opens the outdoor-air inlet port ( 211 ) and closes the indoor-air inlet port ( 212 ), so that only outdoor air flows into the intake; b-1) step (S 2 ) of detecting operation of the blower ( 130 ); c-1) step (S 3 ) of determining whether set indoor temperature of the vehicle is predetermined temperature or higher; and d-1) step (S 4 ) at which the subsidiary door ( 230 ) opens the subsidiary indoor-air inlet port ( 213 ) so that some indoor air flows into the intake.