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System monitoring refrigeration charge

  • US 5,860,286 A
  • Filed: 06/06/1997
  • Issued: 01/19/1999
  • Est. Priority Date: 06/06/1997
  • Status: Expired due to Term
First Claim
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1. A process for monitoring the refrigerant charge in at least one refrigeration circuit of a heating or cooling system comprising the steps of:

  • reading values of sensed conditions occurring in the heating or cooling system wherein the values are produced by a plurality of sensors positioned at various locations within the heating or cooling system;

    processing the read values of the sensed conditions occurring in the heating or cooling system through a neural network so as to produce a computed refrigerant charge for at least one refrigeration circuit of the heating or cooling system that is based on the read values of sensed conditions;

    comparing the computed refrigerant charge with a nominal refrigerant charge for at least one refrigeration circuit of the heating or cooling system; and

    transmitting a status message as to the amount of refrigerant charge in at least one refrigeration circuit of the refrigeration circuit in response to said step of comparing the computed refrigerant charge with the nominal refrigerant charge.

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