Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1987-10-16
1989-05-02
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
98 4203, H01H 3500, F24F 700
Patent
active
048271543
ABSTRACT:
A system for controlling an air cleaner having high ability to remove smoke but low ability to remove gas with use of a gas sensor having higher sensitivity to gas than to smoke. The air cleaner is brought into operation when the gas sensor detects the gas released with the occurrence of smoke. The progress of removal of smoke is detected from the saturation of the gas sensor output, whereupon the cleaner is brought out of operation. Preferably, the air cleaner is held in operation for a predetermined period of time after the detection of the saturation to fully remove the smoke.
REFERENCES:
patent: 3826180 (1974-07-01), Hayashi
patent: 4352321 (1982-10-01), Fukui et al.
patent: 4437391 (1984-03-01), Eguchi et al.
patent: 4458583 (1984-07-01), Fukui et al.
patent: 4478049 (1984-10-01), Fukui et al.
Hiromichi Koyama
Katsuyuki Tanaka
Naoyuki Oie
Shinichi Matsumoto
Figaro Engineering Inc.
Logan Sharon D.
Sanyo Electric Co,. Ltd.
Shoop Jr. William M.
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