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Water temperature control system for a clothes washing machine

  • US 4,330,081 A
  • Filed: 12/03/1979
  • Issued: 05/18/1982
  • Est. Priority Date: 12/03/1979
  • Status: Expired due to Term
First Claim
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1. Water temperature control system for a clothes washing machine comprising:

  • control means for establishing a control effect representative of a desired water temperature for use in the clothes washing tub;

    first and second valve means for supplying incoming cold and hot water, respectively;

    mixing means for combining the water flow from the valve means before entry into the clothes washing tub;

    means for sensing the temperature of the combined water flow before entry into the tub;

    means for determining the cumulative average temperature of said combined water flow;

    means for periodically comparing said average temperature to said desired temperature to determine the difference between said two temperatures;

    and means responsive to said comparing means when said difference exceeds a predetermined amount for actuating said valve means to cause said combined water temperature to change in the direction of approaching said desired temperature.

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