Fire detector scanning arrangement

Details Fire detector scanning arrangement Fire detector scanning arrangement

F - Mech Eng,Light,Heat,Weapons

28

D

340/155.2

F28D 19/04 (2006.01) F28F 27/00 (2006.01)

Patent

CA 1084607

ABSTRACT OF THE DISCLOSURE A detector that monitors infra-red ray emission from an air preheater to detect a temperature rise that precedes a fire within the air pre- heater. The detector of infra-red rays is alternately moved between a "detecting" stage within the air preheater and a "cleaning" stage in clean ambient air where particulate matter deposited thereon by dirty gas may be removed to maintain the detector at a high degree of operating efficiency.

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