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By-pass valve for heat exchanger

  • US 8,083,209 B2
  • Filed: 04/23/2009
  • Issued: 12/27/2011
  • Est. Priority Date: 11/24/2004
  • Status: Expired due to Fees
First Claim
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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.

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