| 摘要 |
PROBLEM TO BE SOLVED: To improve the combustion performance and to smoothly move the flame between a parent burner and a child burner. SOLUTION: The parent burner 3 is an inward burner port burner, the child burner 4 is an outward burner port burner, and the child burner 4 is mounted inside of the parent burner 3, so that they are opposite to each other. Whereby the fire can be smoothly transferred between the parent burner 3 and the child burner 4. Accordingly, an ignition electrode 11 is mounted only one of the burners (mounted at the child burner 4 side in an embodiment), and the manufacturing cost of the parent burner 99 can be reduced. Further as the parent burner 3 is the inward burner port burner, and the child burner 4 is the outward burner port burner, burner port faces are kept into contact with each other in a passage of the secondary air A for combustion, both burners 3, 4 can easily take the secondary air, and the combustion performance can be improved. COPYRIGHT: (C)2004,JPO&NCIPI
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