Burner shut off

Abstract

A burner shutoff for a burner, the burner shutoff including a solenoid moveable between an open position permitting fuel supply to the burner and a closed position cutting off fuel supply to the burner. The burner shutoff including a thermocouple in communication with the solenoid, wherein the thermocouple producing a voltage output signal when heated by the burner for maintaining the solenoid in the open position. The burner including a safety timer for selectively generating and communicating a reverse polarity voltage signal to the solenoid such that the voltage signal received by the solenoid is altered sufficiently to move the solenoid to the closed position, thereby shutting off the burner.

1 . A burner shutoff for a portable heater comprising; 
 (a) a burner including a solenoid moveable between an open position permitting fuel supply to the burner and a closed position cutting off fuel supply to the burner;    (b) a thermocouple in communication with the solenoid, wherein the thermocouple producing a voltage output signal when heated by the burner for maintaining the solenoid in the open position;    (c) a safety timer for selectively generating and communicating a reverse polarity voltage signal to the solenoid such that the voltage signal received by the solenoid is altered sufficiently to move the solenoid to the closed position, thereby shutting off the burner.    
   
   
       2 . The burner shutoff claimed in  claim 1 , wherein the safety timer including a timer for operably communicating the reverse polarity voltage signal at pre selected times.  
   
   
       3 . The burner shutoff claimed in  claim 2  wherein the safety timer including a micro processor for initiating a pre selected timed interval thereby operably communicating the reverse polarity voltage signal at the end of the pre selected timed interval.  
   
   
       4 . The burner shutoff claimed in  claim 3 , wherein the safety timer including a self contained power supply.  
   
   
       5 . The burner shutoff claimed in  claim 3 , wherein the safety timer including a self contained power supply including a battery.  
   
   
       6 . The burner shutoff claimed in  claim 4 , wherein the safety timer including a power storage device which is activated upon failure of the self contained power supply and will provide enough power for operably communicating the reverse polarity voltage signal to the solenoid, thereby shutting off the burner.  
   
   
       7 . The burner shutoff claimed in  claim 1 , wherein the thermocouple connected to the solenoid with thermocouple wires.  
   
   
       8 . The burner shutoff claimed in  claim 7 , wherein thermocouple wires being continuous between the solenoid and thermocouple.  
   
   
       9 . The burner shutoff claimed in  claim 8 , wherein the safety timer connected to the thermocouple wires with timer wires at a contact less connection without introducing additional contact resistance along the thermocouple wires.  
   
   
       10 . A method of shutting off a burner, the method comprising: configuring a burner to comprise, a solenoid moveable between an open position permitting fuel supply to the burner and a closed position cutting off fuel supply to the burner, a thermocouple in communication with the solenoid, wherein the thermocouple producing a voltage output signal when heated by the burner for maintaining the solenoid in the open position; 
 (a) igniting the burner,    (b) generating a reverse polarity output signal,    (c) communicating the reverse polarity voltage signal to the solenoid such that the voltage signal received by the solenoid is altered sufficiently to move the solenoid to the closed position, thereby shutting off the burner.    
   
   
       11 . The method claimed in  claim 10  wherein step a) is as follows: 
 (a) generating a reverse polarity output signal at a selected time controlled by a safety timer which is in communication with the solenoid.    
   
   
       12 . The method claimed in  claim 11  wherein the safety timer including a self contained power supply.  
   
   
       13 . The method claimed in  claim 11  wherein the thermocouple connected to the solenoid with thermocouple wires and the safety timer connected to the thermocouple wires with timer wires at a contact less connection without introducing additional contact resistance along the thermocouple wires.  
   
   
       14 . A system for shutting off a burner comprising; 
 (a) a burner including a solenoid moveable between an open position permitting fuel supply to the burner and a closed position cutting off fuel supply to the burner;    (b) a thermocouple in communication with the solenoid, wherein the thermocouple producing a voltage output signal when heated by the burner; wherein the voltage output signal received by the solenoid maintaining it in the open position;    (c) a reset button for initiating a timer within a safety timer, the safety timer for generating and communicating a reverse polarity output signal to the solenoid such that the voltage signal received by the solenoid is altered sufficiently to move the solenoid to the closed position, thereby shutting off the burner.    
   
   
       15 . The system claimed in  claim 14  wherein upon expiration of the timer the safety timer communicating the reverse polarity voltage signal to the solenoid.  
   
   
       16 . The system claimed in  claim 15  wherein upon depressing the reset button prior to expiration of the timer resets the timer back to a pre determined value.  
   
   
       17 . The system claimed in  claim 14  wherein the safety timer including a self contained power supply including a battery.  
   
   
       18 . The system claimed in  claim 17  wherein the safety timer including a power storage device which is activated upon failure of the self contained power supply and will provide enough power for operably communicating the reverse polarity voltage signal to the solenoid, thereby shutting off the burner.  
   
   
       19 . The system claimed in  claim 14  wherein the thermocouple connected to the solenoid with thermocouple wires.  
   
   
       20 . The system claimed in  claim 19  wherein thermocouple wires being continuous between the solenoid and thermocouple.  
   
   
       21 . The system claimed in  claim 20  wherein the safety timer connected to the thermocouple wires with timer wires at a contact less connection without introducing additional contact resistance along the thermocouple wires.