Method for ignition of an oil burner and electronic ignition circuitry for oil burners

Abstract

A method for ignition of an oil burner and electronic ignition circuitry for oil burners. Electronic ignition circuit for oil burners, for generating temporally spaced sparks. The electronic circuitry comprises circuitry for producing temporally spaced sparks with a spacing not corresponding to a half-period of the AC mains frequency or of a multiple of the AC mains frequency. The circuitry may be used in a method for ignition of an oil burner forming part of an oil burner system, where said oil burner comprises electronic circuitry for producing a first sequence of temporally spaced sparks for ignition of the oil. According to the method, the electronic circuitry is adjusted to subsequently produce a second sequence of temporally spaced sparks if it is detected that the ignition results in acoustic resonance in the oil burner system using said first sequence of temporally spaced sparks.

1 - 21 . (canceled)  
   
   
       22 . A method for ignition of an oil burner forming part of an oil burner system, where said oil burner comprises electronic circuitry for producing a first sequence of temporally spaced sparks for ignition of the oil, causing the electronic circuitry to produce a second sequence of temporally spaced sparks if it is detected that the ignition results in acoustic resonance in the oil burner system using said first sequence of temporally spaced sparks.  
   
   
       23 . A method according to  claim 22 , wherein the electronic circuitry is modified to produce the second sequence by suppressing some of the sparks in the first sequence.  
   
   
       24 . A method according to  claim 23 , wherein the electronic circuitry is modified to suppress a unit fraction of the sparks in the first sequence.  
   
   
       25 . A method according to  claim 23 , wherein the electronic circuitry is modified to suppress all but a unit fraction of the sparks in the first sequence.  
   
   
       26 . A method according to  claim 23 , wherein the electronic circuitry is modified to suppress a simple proper fraction of the sparks in the first sequence.  
   
   
       27 . A method according to  claim 22 , wherein said modification comprises replacement of at least a part of said electronic circuitry.  
   
   
       28 . A method according to  claim 22  wherein said modification comprises adjustment of the electronic circuitry.  
   
   
       29 . A method according to  claim 22 , wherein the electronic circuitry is adjusted to produce a second sequence of equidistant sparks, the sparks of said second sequence occurring at a different frequency than those of said first sequence.  
   
   
       30 . An electronic ignition circuitry for oil burners, for generating temporally spaced sparks, the electronic circuitry comprising; circuitry for producing temporally spaced sparks with a spacing not corresponding to a half-period of an AC mains frequency or of a multiple of the AC mains frequency.  
   
   
       31 . An electronic ignition circuitry according to  claim 30 , wherein the electronic ignition circuitry comprises an oscillator circuit for generating high voltage high frequency bursts.  
   
   
       32 . An electronic ignition circuitry according to  claim 31 , further comprising supply circuitry for repeatedly energizing said oscillator circuitry.  
   
   
       33 . An electronic ignition circuitry according to  claim 32 , wherein said supply circuitry comprises rectifying circuitry repeatedly supplying pulses of energizing current to said oscillator circuitry.  
   
   
       34 . An electronic ignition circuitry according to  claim 31 , wherein said circuitry for producing said temporally spaced high frequency bursts comprises circuitry for disabling the oscillator circuitry.  
   
   
       35 . An electronic ignition circuitry according to  claim 34 , wherein said circuitry for disabling the oscillator circuitry comprises circuitry for disabling the AC mains supply.  
   
   
       36 . An electronic ignition circuitry according to  claim 34 , wherein said circuitry for disabling the oscillator circuitry comprises an on/off timing circuit.  
   
   
       37 . An electronic ignition circuitry according to  claim 35 , wherein said circuitry for disabling the AC mains comprises control circuitry controlling the overall operations of an oil burner system.  
   
   
       38 . An electronic ignition circuitry according to  claim 33 , further comprising circuitry for frequency converting the AC mains frequency fed to the rectifier circuitry.  
   
   
       39 . A method for reducing the power dissipation in an electronic ignition circuit for an oil burner, comprising the steps of: causing said electronic circuit to produce a first sequence of temporally spaced sparks for the ignition of the oil, and depending on the temperature of the electronic ignition circuit, adjusting the electronic ignition circuit to produce a second sequence of temporally spaced sparks differing from the first sequence  
   
   
       40 . A method according to  claim 39 , wherein said second sequence is produced by removing at least some of the sparks of the first sequence.  
   
   
       41 . A Method according to  claim 39 , wherein said sparks are generated by means of oscillator circuitry.  
   
   
       42 . A method according to  claim 41 , wherein said sparks are removed by means of a temperature dependent timer disabling said oscillator circuitry.