| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multi-port burner which has a higher intensity combustion and a higher turn down ratio by improving a flame blow-off limit, without increasing in complexity of the structure of the burner generally used in a small combustion device. SOLUTION: The multi-port burner 10 is equipped with a port member 21 at the tip end of a premixed air-flow path. A plurality of penetrated parts 23 serving as ports and unpenetrated parts 22 serving as partitions for the penetrated parts are provided in the port member 21. In the burner, gap parts 25 are formed in parallel in the direction of the premixed air-flow paths, with tip ends open to the unpenetrated parts 22.
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