Flame responsive control circuit

Details Flame responsive control circuit Flame responsive control circuit

F - Mech Eng,Light,Heat,Weapons

23

N

341/19

F23N 5/08 (2006.01) F23N 5/20 (2006.01)

Patent

CA 1132680

ABSTRACT OF THE DISCLOSURE A flame responsive control circuit means has been disclosed which responds to the flame in a burner. The response is to the sudden rate of change of the resistance or impedance of a photocell upon the loss of flame. The two embodiments disclosed both utilize a rate of change sensing means to deter- mine that a loss of flame has occurred. If a loss occurs, ignition is reinstituted immediately and the system either operates normally or locks itself out in a safety shut down.

346712

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