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Drying system

  • US 7,624,514 B2
  • Filed: 03/16/2004
  • Issued: 12/01/2009
  • Est. Priority Date: 03/19/2003
  • Status: Active Grant
First Claim
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1. A closed drying system, comprising:

  • a vessel that includes a moisture-containing object and an air circulator; and

    a compression refrigeration cycle section that includes;

    a compressor;

    a heating condenser that supplies heat energy to the object through a bottom of the vessel to generate moisture-laden air, which contains moisture in water vapor removed from the object, by evaporation of the moisture of the object;

    a regulating condenser that adjustably exhausts waste heat out of the system;

    an evaporator that is located inside the vessel and removes the water vapor from the moisture-laden air by refrigeration;

    an expansion valve connected after a circulating passage that delivers coolant from the compressor through the heating condenser to the regulating condenser; and

    a sensor that detects a temperature of coolant immediately before the expansion valve, from which temperature information the regulating condenser keeps a coolant temperature before the expansion valve at a constant level,wherein the air circulator circulates air between the object and the evaporator within the vessel whereby moisture-removed air with latent heat removed will contact with the object.

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