| 摘要 |
PURPOSE:To adsorb the components which become oxide such as SiO2 to an oxide adsorption member to avoid the adhesion for an ion electrode so as to contrive the prevention of remarkable lowering of flame current by covering the ion electrode by the oxide adsorption member. CONSTITUTION:Premixed gases are further mixed in a transit of a contraction plate 8 to ignite on a flame hole plate 10 after speed distribution is made uniform by a current plate 9 so as to form a stable flame 12. Flame current (If) is detected by an ion electrode 11 set in a flame 12. In the case where there is a gas containing organic silicon in the air, the oxide film of SiO2 is formed on the ion electrode and the like to remarkably lower the detected flame current (If) so as not to judge a combustion condition. The component which becomes an oxide such as SiO2 is adsorbed to an oxide adsorption member 14, it is difficult to adhere to the ion electrode 11 by covering the ion electrode 11 by an oxide adsorption member 14 and the lowering of the flame current (If) does not occur. |
