Safety device for oil burner

Details Safety device for oil burner Safety device for oil burner

1986-04-03

1987-12-01

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

By sensing of gas leakage, flashback or escaped flame

431 78, 126 93, 340579, 328 6, F23N 524

Patent

active

047101253

ABSTRACT:
A safety device for an oil burner is disclosed which is capable of carrying out the detection of flame by means of a DC flame current obtained due to the rectification of flame to detect the abnormal combustion in the oil burner. The safety device includes a first flame electrode surrounded by flame of normal combustion in the oil burner and a second flame electrode arranged away from the flame and connected to an AC voltage source in a manner to be in parallel with the first flame electrode, so that the second flame electrodes cooperates with the first flame electrode to detect a failure in the flowing of a flame current through the first flame electrode or a decrease in a flame current flowing through the first flame electrode, to thereby determine any abnormal combustion in the oil burner.

REFERENCES:
patent: 2074637 (1937-03-01), Ballentine
patent: 2640920 (1953-06-01), Cairns
patent: 3301307 (1967-01-01), Nishigaki et al.
patent: 4561840 (1985-12-01), Nakamura et al.

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