| 摘要 |
PROBLEM TO BE SOLVED: To impart an allowance of combustibility to obtain a stable combustion, in environmental conditions, use conditions, etc., by providing a means adjusting the stream of a gaseous mixture in a straightening plate in a burner. SOLUTION: When a calorific value increases, as it is necessary to provide a plurality of burner ports, a quality of gaseous mixture flowing through respective ports becomes different from each other. Hence, a notched hole 23 is formed on the vertical face of a straightening plate 18 so that the mixture easily flows in the downstream burner port 22. In this way, a primary air is sucked by the ejector effect, and even if a speed ejecting into a mixing tube 24 is slow, the gaseous mixture spreads all over the downstream port 22. Hence, a difference from the upstream burner port 21 is little and the combustion of each port is stabilized. Therefore, a backfire phenomenon hardly arises.
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