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Remote controlled defrost sequencer

  • US 6,026,651 A
  • Filed: 07/21/1998
  • Issued: 02/22/2000
  • Est. Priority Date: 07/21/1998
  • Status: Expired due to Term
First Claim
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1. A remote system for enabling an electricity supplier to remotely control a defrosting cycle of a plurality of self-defrosting refrigerators of electricity customers to thereby control power demand the refrigerators being electrically connected to at least one power line and each having a defrost sequencer, comprising:

  • a data interface having an input adapted to receive commands from the electricity supplier and an output connected to the power line adapted to transmit said commands via the power line;

    a power line interface, having an input and an output, for receiving said commands from the power line and converting said commands into a digital signal based on said commands, said power line interface input electrically connected to the power line for receiving said commands from the electricity supplier via the power line, and said power line interface output for transmitting said digital signal,wherein said power line interface transmits said digital signal to the defrost sequencer to control the defrosting cycle of the refrigerator based on said digital signal to enable the electricity supplier to control when the defrosting cycle is performed so as to reduce power load during at least peak demand periods.

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