Smoke detector with chamber for producing eddy currents

Details Smoke detector with chamber for producing eddy currents Smoke detector with chamber for producing eddy currents

G - Physics

08

B

340/140.1

G08B 17/10 (2006.01) A62C 37/10 (2006.01)

Patent

CA 1085485

ABSTRACT OF THE DISCLOSURE A smoke detector operating on the reflected light principle, in which the detector housing components are designed to provide recesses in which the light and photo- cell assemblies are retained, with a slot disposed between the light and photo-cell recesses through which ambient air is drawn into a chamber illuminated by the light source and viewed by the photo-cell. When smoke is present in the incoming ambient air, it diffuses throughout the chamber to provide a large volume of illuminated smoke for viewing by the photo-cell thereby giving a fast response to the presence of a small concentration of smoke in the ambient air. The provision of the smoke inlet slot between the light and photo-cell recesses also prevents the accumulation of dust and lint therebetween which could cause a false alarm.

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