Patent ID: 7036527
Filing Date: 2006-05-02
Classification: F16K,F25B,Y10T

Abstract:
1. A composite valve, having a valve body to which a solenoid valve portion and a differential pressure valve portion are integrally provided, wherein said valve body is formed with an inlet, a first outlet, a second outlet, an upper valve chest communicating with the inlet and having a main valve seat, a lower valve chest communicating with the first outlet, a refrigerant introduction chamber communicating with the upper valve chest and having a differential pressure valve seat, and a back pressure introduction chamber communicating with the lower valve chest; a main valve element, which is opened and closed by means of the solenoid valve portion, is located between the upper valve chest and the lower valve chest; a differential pressure valve element is located between the refrigerant introduction chamber and the back pressure introduction chamber so that the differential pressure valve element is opened and closed by means of a differential pressure between the chambers; and said differential pressure valve portion, which is composed of the refrigerant introduction chamber, said back pressure introduction chamber, and said differential pressure valve element, is configured not to be situated on the outer surface of the valve body.