Patent ID: 6698417
Filing Date: 2004-03-02
Classification: F23N,F23Q,F24C

Abstract:
A cooking appliance including:at least one gas pipe connected with an external gas supply; a solenoid safety valve associated with each gas pipe, the solenoid safety valve being configured to control the flow of gas through the gas pipe; a gas burner interconnected to each gas pipe and supplied with gas via the gas pipe, an igniter and a knob associated with each burner for controlling the activation of the burner, each igniter being in electrical communication with a first power supply, a thermocouple positioned to be being immersed in a flame generated by each burner, a switch in electrical communication with each thermocouple; a timer in electrical communication with the igniter and the switch; the timer being configured to close the switch for a predetermined period of time for allowing electricity to flow to one or more transformers in electrical communication with the solenoid valves; a second power supply for supplying power to each of the solenoid valves and timer; wherein upon operation of one of the knobs for activating one of the burners, power from the first power supply activates the igniter corresponding to the desired burner and simultaneously an electrical signal activates the timer powered by the second power supply, the timer closes the switch for the predetermined period of time which keeps the solenoid valve held in an open position for the predetermined period of time for ensuring gas feed to the burner, thereby ensuring the thermocouple reaches a predetermined temperature due to the flame generated by the burner, which ensures that a user only has to operate the knob a single time.