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Control apparatus for an air conditioning system providing a plurality of energy-saving modes of operation

  • US 4,373,351 A
  • Filed: 10/14/1980
  • Issued: 02/15/1983
  • Est. Priority Date: 10/14/1980
  • Status: Expired due to Term
First Claim
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1. In an air conditioning system, control apparatus for automatically selecting and implementing, as a system set point operating temperature, a plurality of user-established temperature settings desired to be effective at different times of the day, said control apparatus comprising:

  • (a) clock means for supplying a signal representative of actual time of day;

    (b) user-operated data input and storage means for establishing a plurality of desired time and temperature settings at which the system is to operate including,(i) first means for establishing a primary temperature setting to be effective during a desired normal operating mode of the system,(ii) second means for establishing at least two different energy saving time periods during which the system is to operate in energy saving operating modes,(iii) third means for establishing a plurality of secondary temperature settings capable of being respectively different from each other to be effective during each of said energy saving time periods;

    (c) mode control signal generation means responsive to said clock means and to said data input and storage means for establishing control signals representative of any energy saving time period extant at the time of day involved;

    (d) temperature control signal generation means responsive to the data input and storage means and to the mode control signal generation means for establishing a system set point temperature control signal representative of said primary temperature setting when the time of day is outside said energy saving time periods and of one of said secondary temperature settings when the time of day is within an energy saving time period corresponding thereto;

    (e) and system functional operating control means responsive to the data input and storage means and to the temperature control signal generating means for operating the system to the system set point temperature indicated by said temperature control signal.

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