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Apparatus and method for classifying a medium in a cooking chamber

  • US 5,582,755 A
  • Filed: 04/04/1995
  • Issued: 12/10/1996
  • Est. Priority Date: 04/04/1995
  • Status: Expired due to Term
First Claim
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1. A method of operating a control system to classify a medium in a cooking chamber as air or non-air comprising:

  • determining a first measured temperature of the medium;

    storing the first measured temperature of the medium;

    activating a heating element to heat said medium for a first predetermined period of time;

    deactivating said heating element for a second predetermined period of time;

    determining a second measured temperature of the medium;

    comparing the first measured temperature of the medium to said second measured temperature;

    classifying the medium as air if said second measured temperature exceeds said first measured temperature by a predetermined amount; and

    controlling the heating element as a function of said classification.

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