Combustion control apparatus

Details Combustion control apparatus Combustion control apparatus

1981-09-25

1984-05-01

Barrett, Lee E.

Combustion

Timer, programmer, retarder or condition responsive control

Providing repeated start attempts prior to shutdown upon...

431 31, 431 69, F23N 500

Patent

active

044458410

ABSTRACT:
A combustion control apparatus in which a predetermined number of pre-purge and igniting cycles are repeated until ignition takes place successfully. A pre-purge time interval of the second and subsequent igniting cycles is selected shorter than that of the first igniting cycle. When an existing combustion control element which is capable of performing the igniting cycle only once is employed, the intended combustion control is performed by appropriately controlling a reset terminal of the existing combustion control element of signals representative of expirations of the pre-purge time interval and the ignition time interval. The number of the igniting cycles is counted by a counter for stopping operation of the combustion apparatus when a predetermined count value is attained. A novel circuit for the combustion control element is also disclosed.

REFERENCES:
patent: 3489500 (1970-01-01), Giuffrida et al.
patent: 4192641 (1980-03-01), Nakagawa et al.

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