CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR

摘要

The present invention provides a control valve configured to optimize the operating capacity of a variable displacement compressor used in an air controlling system based on cooling load and target temperature. According to the present invention, a new type of structure, in which a diaphragm assembly (16) and a plunger assembly (17) are arranged up and down and connected to each other, is provided to simplify the structure, reduce the number of parts, and significantly reduce the size of the overall control valve. Moreover, a new type of diaphragm assembly (16), in which a metal contact member (16b) is reinforced in the contact area of a diaphragm (16a), is provided to prevent wear or damage even by frequent contact with a plunger (17a) and improve the durability of the diaphragm (16a). Furthermore, the sliding area of the plunger (17a) is minimized to two areas to reduce a difference in pressure due to a difference in frictional force between up and down movements, and thus it is possible to precisely perform variable displacement control.