Igniter for furnace

Abstract

An igniter includes an insulative body, and a resistive conductor positioned within the insulative body. The insulative body of the igniter can be made of a ceramic. In another embodiment, the insulative body is made from a non water absorbing material.

1 . An igniter comprising:
 an insulative body; and   a resistive conductor positioned within the insulative body.   
   
   
       2 . The igniter of  claim 1  wherein the insulative body is comprised of a ceramic. 
   
   
       3 . The igniter of  claim 1  wherein the insulative body is comprised of a non water absorbing material. 
   
   
       4 . The igniter of  claim 1  wherein the insulative body includes a tubular portion. 
   
   
       5 . The igniter of  claim 1  wherein the insulative body includes a cylinder of substantially non water absorbing material. 
   
   
       6 . The igniter of  claim 5  wherein the insulative body includes a tubular portion, the cylinder of substantially non water absorbing material positioned within the tubular portion. 
   
   
       7 . The igniter of  claim 6  wherein the tubular portion is made of a substantially non water absorbing material. 
   
   
       8 . The igniter of  claim 1  wherein the resistive conductor is positioned substantially around the cylinder. 
   
   
       9 . The igniter of  claim 1  wherein the resistive conductor is positioned substantially within the cylinder. 
   
   
       10 . The igniter of  claim 1  wherein the resistive conductor is positioned around the cylinder. 
   
   
       11 . A system comprising:
 a combustion chamber;   a burn pot within the combustion chamber; and   at least one igniter positioned to ignite fuel within the burn pot, the at least one igniter further comprising:
 an insulative body; and 
 a resistive conductor positioned within the insulative body. 
   
   
   
       12 . The system of  claim 11  wherein the insulative body of the igniter is comprised of a ceramic. 
   
   
       13 . The system of  claim 11  wherein the insulative body of the igniter is comprised of a non water absorbing material. 
   
   
       14 . The system of  claim 11  wherein the insulative body of the igniter includes a tubular portion. 
   
   
       15 . The system of  claim 11  wherein the insulative body of the igniter includes a cylinder of substantially non water absorbing material. 
   
   
       16 . The system of  claim 15  wherein the insulative body of the igniter includes a tubular portion, the cylinder of substantially non water absorbing material positioned within the tubular portion. 
   
   
       17 . The system of  claim 16  wherein the tubular portion is made of a substantially non water absorbing material. 
   
   
       18 . The system of  claim 11  wherein the resistive conductor of the igniter is positioned substantially around the cylinder of the igniter. 
   
   
       19 . The system of  claim 11  wherein the resistive conductor of the igniter is positioned substantially within the cylinder. 
   
   
       20 . The system of  claim 11  wherein the resistive conductor of the igniter is positioned around the cylinder of the igniter. 
   
   
       21 . The system of  claim 11  further comprising a controller for controlling the at least one igniter. 
   
   
       22 . A system comprising:
 a combustion chamber;   a burn pot within the combustion chamber;   a first igniter positioned to ignite fuel within the burn pot; and   a second igniter positioned to ignite fuel within the burn pot, at least one of the first igniter or the second igniter further comprising:
 an insulative body; and 
 a resistive conductor positioned within the insulative body. 
   
   
   
       23 . The system of  claim 22  further comprising a controller for controlling the at least one igniter. 
   
   
       24 . The system of  claim 22  further comprising a back up device for igniting the fuel within the burnpot.