Flame monitoring apparatus

Details Flame monitoring apparatus Flame monitoring apparatus

1987-12-08

1989-05-30

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340577, 250554, G08B 1712, H01L 900

Patent

active

048355259

ABSTRACT:
An apparatus for monitoring a flame which emits light, the apparatus comprising: (a) a detector for detecting the light and outputting a signal corresponding to the light; (b) a casing for enclosing the detector, the casing including an aperture for the light going to the detector; (c) a blower for supplying air to the casing; and (d) a windmill for periodically shuttering the light to the detector with a shuttering frequency, the windmill being driven by the supplied air.

REFERENCES:
patent: 3993900 (1976-11-01), Hulme
patent: 4280058 (1981-07-01), Tar
patent: 4322723 (1982-03-01), Chase
patent: 4328488 (1982-05-01), Yanai et al.
patent: 4381455 (1983-04-01), Komori
patent: 4464575 (1984-08-01), Cholin et al.
patent: 4639605 (1987-01-01), Seki et al.
patent: 4709155 (1987-11-01), Yamaguchi et al.

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