Safety control device for gas appliance

Abstract

A gas appliance includes a pilot burner, one or more main burners, a solenoid valve coupled to the pilot burner and the main burners for controlling the pilot burner and the main burners, and a control circuit coupled to the solenoid valve for controlling the solenoid valve to operate the pilot burner or the main burner. An igniting device may be coupled to the control circuit for being operated by the control circuit to selectively ignite the pilot burner. One or more batteries may be coupled to the control circuit for energizing the control circuit, and a thermo-couple may be coupled to the control circuit for selectively energizing the control circuit when the battery is out of electricity.

1 . A gas appliance comprising:
 a pilot burner,   at least one main burner,   a solenoid valve coupled to said pilot burner and said at least one main burner for controlling said pilot burner and said at least one main burner,   a control circuit coupled to said solenoid valve for controlling said solenoid valve to operate said pilot burner or said at least one main burner,   an igniting device coupled to said control circuit for being operated by said control circuit to selectively ignite said pilot burner,   at least one battery coupled to said control circuit for supplying an electric energy to energize said control circuit, and   a thermo-couple coupled to said control circuit for selectively energizing said control circuit when said at least one battery is out of electricity.   
   
   
       2 . The gas appliance as claimed in  claim 1 , wherein a detecting device is disposed beside said at least one main burner for detecting whether said at least one main burner is working or not, and said detecting device is coupled to said control circuit for sending a detected signal to said control circuit. 
   
   
       3 . The gas appliance as claimed in  claim 1 , wherein a changing device is provided and coupled to said control circuit and coupled to said at least one battery and said thermo-couple for switching between said at least one battery and said thermo-couple. 
   
   
       4 . The gas appliance as claimed in  claim 3 , wherein a supercharging device is further coupled between said changing device and said thermo-couple. 
   
   
       5 . The gas appliance as claimed in  claim 1 , wherein a switch is provided and coupled to said control circuit for selectively operating said control circuit.