Patent ID: 8083209
Filing Date: 2011-12-27
Classification: F28F,G05D,Y10T

Abstract:
1. A by-pass valve for a heat exchanger circuit, the by-pass valve comprising: a housing defining a communicating first bore and second bore with a peripheral valve seat located at a junction thereof about a valve opening, the first bore, second bore and valve opening forming at least a portion of a closable flow path between a first opening and a second opening in the housing; an actuator located in the first bore and having a reciprocating seal disposed for movement to engage the valve seat and close the valve opening; a coiled return spring mounted in the housing for urging the reciprocating seal towards the first bore to open the valve opening, the return spring having a first end acting on the reciprocating seal, and a second end; and a discrete spring support extending across the second bore and having a surface supporting the second end of the return spring, the spring support including at least one fluid flow opening there through for fluid flowing through the valve opening.