| 摘要 |
PROBLEM TO BE SOLVED: To realize low NOx, a wide input variable range, reduction of noise, and restraint of unburned components, for a low-NOx burner. SOLUTION: Burner port divided plates 21a, 21b include wavy portions 22 whose cross section in the longitudinal direction is of wavy type respectively, and are formed with lean burner ports 25 which are sub-devided such that the vicinities of tops 23 of the wave portions 22 are made substantially circular arc-shaped, and the tops 22 are arranged so as to be in close contact with each other. The respective burner port divided plates 21a, 21b are prevented from being deformed, thus preventing generation of back fire at the time of small inputs and increasing the input variable range. A burner port area is maximized, while the lean burner ports 25 partitioned by the minimum number of burner port divided plates are being formed, therefore lean mixture jets at a low velocity, so that a short lean flame with a stable flame length is formed, thus achieving reduction of noise and restraint of the unburned components. COPYRIGHT: (C)2004,JPO
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