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Thermal actuated switchable heat pipe

  • US 4,974,667 A
  • Filed: 10/10/1989
  • Issued: 12/04/1990
  • Est. Priority Date: 10/10/1989
  • Status: Expired due to Fees
First Claim
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1. A thermal actuated switchable heat pipe for use in a passenger compartment heating system of an automotive vehicle having an engine cooling system and an exhaust system, said thermal actuated switchable heat pipe comprising:

  • a condenser in thermal contact with said engine cooling system of said automotive vehicle;

    an evaporator in thermal contact with said exhaust system of said automotive vehicle;

    a vapor flow path between said evaporator and said condenser;

    a fluid flow path between said condenser and said evaporator;

    a working fluid disposed within said evaporator; and

    thermostat means mounted in said fluid flow path between said condenser and said evaporator for controlling the flow of fluid therebetween, said thermostat means including a thermostat in thermal contact with said engine cooling system.

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