Fire alarm device accompanied with air conditioner
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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Abstract
A combination fire alarm/air conditioner, which can immediately detect a fire. The device includes a temperature-sensor and/or a smoke-sensor installed in the room-side air inlet of the air conditioner. Signals generated by the sensor are received by a microcomputer which monitors them based on a threshold and a rate of change of the signals. When the rate of change of the signals exceeds the threshold, the microcomputer produces signals which set off an alarm.
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Citations
5 Claims
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1. A combination fire alarm/air circulating system for a room, comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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Specification