Fire alarm device accompanied with air conditioner

Details Fire alarm device accompanied with air conditioner Fire alarm device accompanied with air conditioner

1990-10-30

1993-11-09

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

340693, 340628, 454257, 454258, G08B 1700

Patent

active

052606910

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.

REFERENCES:
patent: 4088986 (1978-05-01), Boucher
patent: 4853693 (1989-08-01), Eaton-Williams
patent: 4884222 (1989-11-01), Nagashima et al.
patent: 4996517 (1991-02-01), Kringen et al.

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