Photoelectric start-stop controls for gas burner

Details Photoelectric start-stop controls for gas burner Photoelectric start-stop controls for gas burner

1975-12-19

1977-06-07

Favors, Edward G.

Combustion

Mixer and flame holder

Bunsen burner type

126234, 126238, 431 6, 431 79, F23D 1340

Patent

active

040280470

ABSTRACT:
A device for electrically starting and stopping the operation of a gas burner in response to the shadow of the user's hand holding an object to be heated, the device including a solenoid valve in the gas line and a dimmer circuit with a directional photoelectric sensor, a switching amplifier, and a valve relay controlling the solenoid valve. The dimmer circuit can be bypassed for continuous operation by means of a selector switch.

REFERENCES:
patent: 736321 (1903-08-01), Walther
patent: 3188836 (1965-06-01), Kniebes
patent: 3723045 (1973-03-01), Reese

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