Expansion valve for vehicle air-conditioning system and vehicle air-conditioning system including the same

摘要

PROBLEM TO BE SOLVED: To provide an expansion valve of an air conditioning system in which an external variable type compressor for a vehicle capable of reducing a manufacturing cost is applied.SOLUTION: An expansion valve of an air conditioning system for a vehicle includes a body member in which a first flow path and a second flow path separated from each other are formed, a moving member which is connected inside the body member so as to move in a set direction, with one end being exposed to the first flow path for transmission of a pressure of the first flow path, and the other end opening/closing the second flow path, and an elastic member for elastically supporting the moving member in the first flow direction. By movement of the moving member caused by a difference between a pressure inside the first flow path and an elastic force of the elastic member, the second flow path is opened or closed.SELECTED DRAWING: Figure 2