Patent ID: 6322352
Filing Date: 2001-11-27
Classification: F23N,F24C,Y10T

Abstract:
A gas burner system comprising:a gas cooking burner;a gas supply line connected to said gas burner for supply a fuel gas thereto;an electromagnetic valve connected in said gas supply line for shutting off a supply of gas to said burner upon extinguishing of a burner flame;a spark generator at said burner receiving a voltage pulse for producing a spark to ignite said flame at said burner and for signaling discharge of unburned fuel gas therefrom;an electronic controller connected between said spark generator and said electromagnetic valve for automatically triggering a series of voltage pulses producing respective sparks to attempt to ignite unburned fuel gas and, upon a failure of ignition within a predetermined time interval or after a predetermined number of pulses, closing said electromagnetic valve; anda manually operable valve connected in said line, said manually operable valve having a valve stem for controlling supply of gas to said burner through said line, said electronic controller generating a retention current maintaining said electromagnetic valve in an open state over an entire duration of the burner flame;said electromagnetic valve being spring biased toward a closed state, said stem producing, upon a single actuation of said stem, a retention current maintaining said electromagnetic valve in an open state over an entire duration of the burner flame.