| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a combustion detecting electrode less corrosive by oxidation, with excellent durability, which accurately detects the state of flame of combustion gas for a long period since a variation in electric resistance value is less even when the electrode is used in a gas burning appliance such as a water heater for a long period, and also to provide a safe combustion device using the combustion detecting electrode. <P>SOLUTION: This combustion detecting electrode 5a is disposed so as to come into contact with the combustion flame of fuel gas jetted from a burner head. The combustion detecting electrode 5a carries a current through the combustion flame by a voltage applied between the burner head 4 and the combustion detecting electrode 5a. The combustion detecting electrode 5a is formed of a silicon nitride sintered body containing conductivity imparting matter. <P>COPYRIGHT: (C)2004,JPO |
