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Temperature control method for distributing power to a plurality of heating elements

  • US 4,920,252 A
  • Filed: 11/14/1988
  • Issued: 04/24/1990
  • Est. Priority Date: 02/05/1988
  • Status: Expired due to Term
First Claim
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1. In a temperature control method using a heating means and a temperature detecting means for each of a plurality of objects which are temperature controlled according to sequential, predetermined intervals of time designated as heater switching control cycles, said method comprising the steps of:

  • (a) controlling the heating of each of said heating means, for each cycle of said heater switching control cycles, by measuring and storing a temperature of each of said objects using said temperature detecting means, and in response thereto, allocating a specific length of actuating time and a specific cycle portion for controlling a heating means of each respective object, such that a total energy requirement for activating a subset of said heating means at any given time during said each cycle is maintained within a range of a predetermined rated capacity; and

    (b) actuating each of said heating means according to said specific length of actuating time and said specific cycle portion.

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