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Fire alarm device accompanied with air conditioner

  • US 5,260,691 A
  • Filed: 10/30/1990
  • Issued: 11/09/1993
  • Est. Priority Date: 10/30/1990
  • Status: Expired due to Fees
First Claim
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1. A combination fire alarm/air circulating system for a room, comprising:

  • means for circulating air in the room, said circulating means having an air inlet and means for drawing the room air into said air inlet;

    sensing means, located in said air inlet for sensing at least one of temperature and smoke values of the room air drawn into said air inlet by said drawing means; and

    a microcomputer for monitoring the values sensed by said sensing means, calculating a rate of change of said values, comparing the calculated rate of change to a preset threshold and generating a warning signal if the calculated rate of change exceeds the preset threshold.

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