Fire detector scanning arrangement

Details Fire detector scanning arrangement Fire detector scanning arrangement

1976-02-17

1977-05-10

Dority, Jr., Carroll B.

Heat exchange

Regenerator

Cleaning

165 11, F28D 1904

Patent

active

040222705

ABSTRACT:
A detector that monitors infra-red ray emission from an air preheater to detect a temperature rise that precedes a fire within the air preheater. 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.

REFERENCES:
patent: 3181602 (1965-05-01), Johnstone
patent: 3730259 (1973-05-01), Wixson et al.
patent: 3861458 (1975-01-01), Ostrander et al.
patent: 3918516 (1975-11-01), Carrasse et al.

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