Gas burner control system

Abstract

A gas burner control system includes a control unit formed of a valve seat and main valve assembly and at least one solenoid valve and installed in the burner body and connected to the electronic igniter, and an operation unit formed of a power switch and at least one flame intensity control switch and provided outside the burner body and connected to the control unit and the electronic igniter. Switching on the power switch opens the main valve assembly and drives the electronic igniter to ignite ignition flame. Switching on one flame intensity control valve opens the corresponding solenoid valve for producing the desired intensity of burner flame.

What the invention claimed is:  
     
         1 . A gas burner control system installed in a gas burner and adapted to control the operation of the gas burner, comprising: a control unit, said control unit comprising: 
 a valve seat, said valve seat comprising a fuel gas path, a gas inlet adapted to fuel gas from an external fuel gas source to said fuel gas path, a first gas outlet adapted to guide fuel gas from said fuel gas path to the ignition flame nozzle of the gas burner, and a second gas outlet adapted to guide fuel gas from said fuel gas path to the burner flame nozzle tube of the gas burner;    a normal-close main valve assembly supported in said valve seat and electrically connected to the electronic igniter of the gas burner and adapted to close/open the fuel gas passage from the gas inlet of said valve seat to said fuel gas path of said valve seat; and    at least one normal-close solenoid valve (hereinafter called as solenoid valve) supported in said valve seat and adapted to close/open the fuel gas passage from the fuel gas path of said valve seat to the second gas outlet of said valve seat; and an operation unit, said operation unit comprising:    a power switch electrically connected to said electronic igniter; and    at least one flame intensity control switch electrically connected to said at least one solenoid valve and the electronic igniter of the gas burner and adapted to close/open said at least one solenoid valve.    
     
     
         2 . The gas burner control system as claimed in  claim 1  wherein said normal-close main valve assembly is comprised of a plurality of normal-close solenoid valves (hereinafter called as normal-close valves) connected in parallel to the electronic igniter of the gas burner and adapted to synchronously close/open the fuel gas passage from the gas inlet of said valve seat to the fuel gas path of said valve seat.  
     
     
         3 . The gas burner control system as claimed in  claim 1  wherein said control unit further comprises a normal-close ignition flame control valve electrically connected to the electronic igniter of the gas burner and adapted to close/open the fuel gas passage from the fuel gas path of said valve seat to the first gas outlet of said valve seat.  
     
     
         4 . The gas burner control system as claimed in  claim 1  wherein the gas inlet of said valve seat further comprises a wire gauze filter.  
     
     
         5 . The gas burner control system as claimed in  claim 1  wherein said operation unit further comprises a receiver electrically connected to the electronic igniter and said control unit, and a remote controller adapted to transmit a control signal to said receiver by radio to turn on/off the electronic igniter of the gas burner and to close/open said solenoid valves.  
     
     
         6 . The gas burner control system as claimed in  claim 1  further comprising a temperature sensor adapted to detect the temperature of a predetermined area and to turn on/off the electronic igniter of the gas burner and the at least one flame intensity control switch subject to the temperature level of the predetermined area.  
     
     
         7 . The gas burner control system as claimed in  claim 1  further comprising a temperature sensor adapted to detect the temperature of a predetermined area and to turn on/off the electronic igniter of the gas burner and said power switch subject to the temperature level of the predetermined area.  
     
     
         8 . The gas burner control system as claimed in  claim 3  wherein said main valve assembly and said ignition flame control valve are respectively connected to a respective terminal of the electronic igniter of the gas burner for enabling the electronic igniter of the gas burner to close/open said main valve assembly and said ignition flame control valve separately.  
     
     
         9 . The gas burner control system as claimed in  claim 8  further comprising a control circuit installed in the electronic igniter of the gas burner and adapted to cut off power supply from said ignition flame control valve a predetermined length of time after the presence of burner flame at the burner flame nozzle tube of the gas burner.  
     
     
         10 . A gas burner control system installed in a gas burner and adapted to control the operation of the gas burner, comprising: a control unit, said control unit comprising: 
 a valve seat, said valve seat comprising a fuel gas path, a gas inlet adapted to fuel gas from an external fuel gas source to said fuel gas path, a first gas outlet adapted to guide fuel gas from said fuel gas path to the ignition flame nozzle of the gas burner, and a second gas outlet adapted to guide fuel gas from said fuel gas path to the burner flame nozzle tube of the gas burner;    a micro switch, said micro switch having a common contact and a normal-open contact electrically connected to the electronic igniter of the gas burner;    a cock adapted to switch on/off said micro switch, said cock comprising a gas inlet and a gas outlet connected to the gas inlet of said valve seat;    a normal-close main valve assembly supported in said valve seat and electrically connected to the electronic igniter of the gas burner and adapted to close/open the fuel gas passage from the gas inlet of said valve seat to said fuel gas path of said valve seat; and    at least one normal-close solenoid valve (hereinafter called as solenoid valve) supported in said valve seat and adapted to close/open the fuel gas passage from the fuel gas path of said valve seat to the second gas outlet of said valve seat.    
     
     
         11 . The gas burner control system as claimed in  claim 10  wherein said normal-close main valve assembly is comprised of a plurality of normal-close solenoid valves (hereinafter called as normal-close valves) connected in parallel to the electronic igniter of the gas burner and adapted to synchronously close/open the fuel gas passage from the gas inlet of said valve seat to the fuel gas path of said valve seat.  
     
     
         12 . The gas burner control system as claimed in  claim 10  wherein said control unit further comprises a normal-close ignition flame control valve electrically connected to the electronic igniter of the gas burner and adapted to close/open the fuel gas passage from the fuel gas path of said valve seat to the first gas outlet of said valve seat.  
     
     
         13 . The gas burner control system as claimed in  claim 10  wherein said cock is connected between said main valve assembly and said at least one solenoid valve and adapted to regulate the flow rate of fuel gas passing through the fuel gas path of said valve seat.  
     
     
         14 . The gas burner control system as claimed in  claim 10  wherein said cock is connected between said at least one solenoid valve and the second gas outlet of said valve seat and adapted to regulate the flow rate of fuel gas passing through the fuel gas path of said valve seat.  
     
     
         15 . The gas burner control system as claimed in  claim 10  wherein the gas inlet of said cock comprises a wire gauze filter.  
     
     
         16 . The gas burner control system as claimed in  claim 12  wherein said main valve assembly and said ignition flame control valve are respectively connected to a respective terminal of the electronic igniter of the gas burner for enabling the electronic igniter of the gas burner to close/open said main valve assembly and said ignition flame control valve separately.  
     
     
         17 . The gas burner control system as claimed in  claim 16  further comprising a control circuit installed in the electronic igniter of the gas burner and adapted to cut off power supply from said ignition flame control valve a predetermined length of time after the presence of burner flame at the burner flame nozzle tube of the gas burner.