Detector
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United States of America Patent
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-
Aug 26, 2014
Grant Date -
Jan 10, 2013
app pub date -
Jul 13, 2012
filing date -
Jan 21, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A detector includes a smoke detecting section that includes a light-receiving unit at a position at which the light-receiving unit does not directly receive light emitted by a light-emitting unit in a chamber in which a labyrinth for preventing light from directly entering from the outside and an insect net covering the rim of the labyrinth are provided, the light-receiving unit receiving light scattered by smoke flowing into the chamber. An opening hole is formed open in the surface of the cover receiving hot air current, of the detector. In the cover behind the opening hole, an electrochemical gas sensor is placed to bring gas generated by a fire through the opening hole into contact with an electrolyte solution to detect the gas by an electrode.
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