Air conditioner for vehicle

An air conditioner for a vehicle, comprising:

• a heating line having a condenser at an inlet thereof and an outlet communicating with an interior of the vehicle;
• a cooling line having an inlet communicating with the inlet of the heating line, an outlet communicating with the interior of the vehicle, and an evaporator connected to the condenser inside of the cooling line for circulating a refrigerant;
• one or more doors opening and closing to control a flow stream of each line and to control a temperature of air introduced into the interior of the vehicle;
• and
• a circulation line communicating with the cooling line and the interior of the vehicle to recirculate the air in the interior of the vehicle to the cooling line,
• wherein the condenser is disposed at a position where the inlet of the heating line and the inlet of the cooling line are connected to each other,
• wherein the evaporator is disposed in the cooling line at a position of downstream from the condenser in a direction of air flow,
• wherein at least one of the one or more doors is disposed between the condenser and the evaporator in a flow path for outdoor air to be introduced into the cooling line,
• wherein an amount of heated air after passing through the condenser to pass through the evaporator is controlled depending on degrees of opening of the at least one of the one or more doors, and
• wherein the circulation line is disposed between the cooling line and the heating line so as to distinguish the cooling line and the heating line from each other.