Air conditioner for vehicle

An air conditioner for a vehicle which includes:

• a scroll case which is disposed at an inlet of an air-conditioning case and has a centrifugal fan mounted therein;
• an intake duct which is combined to one side of the scroll case in an axial direction of the centrifugal fan and has inside and outside air inflow ports to introduce inside air and outside air;
• and an intake door which is rotatably mounted inside the intake duct through a rotary shaft to open and close the inside and outside air inflow ports, wherein the intake duct has an opening formed at one side to be combined to the scroll case and the inside and outside air inflow ports are formed in the outer circumferential surface of the intake duct to be spaced apart from each other in the circumferential direction,
• wherein the intake door has an opening formed in a cylindrical door part to open and close the inside and outside air inflow ports according to rotational angles, and
• wherein in an outside air inflow mode where the outside air inflow port is opened by the intake door, inside air intake holes are respectively formed in the side of the intake duct and the
• side of the intake door so that inside air existing outside the intake duct is inhaled into the intake door.