Title: Discriminating flame detector

Abstract: A device for discriminating between the presence of flame in a selected position and the presence of flame in nearby locations within a combustion area is disclosed. A means for detecting electromagnetic radiation having wavelengths known to be characteristic of the base of the flame but not of the rest of the flame is aimed at the position at which the base of the flame to be monitored will occur if the flame is present. The intensity of the radiation having the given wavelengths is compared with the intensity of radiation having nearby wavelengths, and the relative magnitudes of the two intensities are used as an indication of whether flame is present or absent at the selected position.

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Inventors: Schuetz, Adolph August (East Hampton, CT, US)
Bossak, Gary Edward (Bristol, CT, US)

Application Number: 646087
Filing Date: 1976-01-02
Publication_date: 1977-09-27
Assignee: Combustion Engineering, Inc. (Windsor, CT)
Primary Class(es): 250/372
Other Classes:
US Patent Ref:

3130310	Apr, 1964	Biberman et al.	250/372.
3543260	Nov, 1970	Engh	250/372.
3609364	Sep, 1971	Paine	250/372.

Other Refs:
Primary Examiner: Borchelt, Archie R.
Assistant Examiner:
Attorney: Born; Joseph H.