Combustion control device

Details Combustion control device Combustion control device

1989-05-23

1991-06-25

Price, Carl D.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

431 78, 340578, F23N 500

Patent

active

050262726

ABSTRACT:
A combustion control device capable of detecting a self-discharge state caused by a failure of an ultraviolet ray detecting tube by interrupting flames from a combustion mechanism to an ultraviolet ray detecting tube by opening and closing a shutter, integrating, by an integrating circuit, detection signals from this ultraviolet ray detecting tube only when the shutter is closed, comparing the result of this integration with a preset judgement level by use of a first judgement circuit, and determining a failure by comparing a result of this comparison with a preset failure judgement frequency by use of a second judgement circuit, thereby improving maintainability.

REFERENCES:
patent: 3344302 (1967-09-01), Engh et al.
patent: 3372279 (1968-03-01), Engh et al.
patent: 3428901 (1969-02-01), Blackett
patent: 4043742 (1977-08-01), Egans et al.
patent: 4435149 (1984-03-01), Astheimer

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