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Marine air conditioner

  • US 6,026,653 A
  • Filed: 05/13/1997
  • Issued: 02/22/2000
  • Est. Priority Date: 05/13/1997
  • Status: Expired due to Term
First Claim
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1. An air conditioning apparatus, comprising:

  • a) an insulated compartment;

    b) a heat exchanger having a first surface and a second-surface;

    c) a variable-speed pump adapted to pump a liquid cooling fluid along a defined flow path leading from the insulated compartment, across the first surface of the heat exchanger, and back to the insulated compartment;

    d) a means for causing air to flow across the second surface of the heat exchanger in the heat exchange relationship with the cooling fluid;

    e) a computer; and

    f) a temperature sensor adapted to monitor the temperature of air which has flowed across the second surface of the heat exchanger and send a signal to the computer if the air temperature varies from a predetermined set point;

    wherein the computer responds to the signal sent by the temperature sensor by varying the speed of the pump; and

    wherein the cooling fluid is cooled by contact with a slowly melting frozen material stored inside the insulated compartment.

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