AIR CONDITIONER FOR VEHICLE, COMPOSITE VALVE, AND CONTROL VALVE

摘要

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle which can maintain a dehumidifying performance in a good condition, and to provide a control valve suitable for the air conditioner for a vehicle.

SOLUTION: The air conditioner 1 for a vehicle includes: a first expansion device capable of expanding a refrigerant introduced from an outdoor condenser to introduce the refrigerant into an indoor evaporator; a second expansion device capable of expanding a refrigerant introduced from an auxiliary condenser to introduce the refrigerant into the outdoor evaporator; and a third expansion device capable of expanding a refrigerant introduced from the auxiliary condenser to introduce the refrigerant into the indoor evaporator. The first expansion device includes a differential valve 31 that opens when a pressure difference between an upstream side and a downstream side is not less than a first set value. The second expansion device includes a differential valve 32 that opens when a pressure difference between the upstream side and the downstream side is not less than a second set value. Each of the differential valves includes a valve element that is supported by a body while alternately contacting and separating from a valve hole to open and close a valve portion; a biasing element that biases the valve element in a valve closing direction; and an orifice that is formed to penetrate the valve element and extends in an opening and closing direction of the valve portion.

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