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Environmental control system using poled diodes to allow additional controlled devices in existing four wire system

  • US 5,452,762 A
  • Filed: 07/13/1993
  • Issued: 09/26/1995
  • Est. Priority Date: 07/13/1993
  • Status: Expired due to Fees
First Claim
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1. A kit for a heating, ventilating, air conditioning and humidifying system that includes heating means, ventilating means, air conditioning means and humidifying means in a plant area comprising:

  • a remote control unit located remotely from said plant area and including;

    a temperature control means for controlling the operation of said heating and air conditioning means,a ventilating control means for controlling the operation of said ventilating means, anda humidity control means for controlling the operation of said humidifying means independent of said ventilating control means;

    a main control unit located adjacent said plant area and including;

    heat responsive means responsive to said temperature control means for activating said heating means,cool responsive means responsive to said temperature control means for activating said air conditioning means,ventilating responsive means responsive to at least said ventilating control means for activating said ventilating means, andhumidity responsive means responsive to said humidity control means for activating said humidifying means;

    a connecting link means for coupling said remote control unit to said main control unit consisting essentially of first, second, third and fourth wires extending from said main control unit to said remote control unit, said first wire coupling AC potential to said remote control unit, said second wire coupling said temperature control means to said main control unit, said third wire coupling said ventilating control means to said main control unit and said fourth wire coupling said humidity control means to said main control unit; and

    connecting means extending from said main control unit to said plant area to thereby have said heat, cool, ventilating and humidity responsive means control the operation of said heating means, said ventilating means, said air conditioning means and said humidifying means in said plant area.

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