| 摘要 |
PROBLEM TO BE SOLVED: To provide a burner 4b with superior combustibility. SOLUTION: In the burner 4b, a first nozzle pipe N1 having first jet holes a1 jetting fuel gas and a second nozzle pipe N2 having second jet holes a2 jetting combustion air to the fuel gas are provided in a mutually juxtaposed state. The first jet holes a1 and the second jet holes a2 are coordinated so that the combustion air is jetted toward the fuel gas jetted from a single jet hole a1 from a plurality of the second jet holes 2 juxtaposed adjacently along a pipe axis direction of the second nozzle pipe N2. A gas jetting direction of the second jet hole a2 is set in a direction toward a gas jetting area of the coordinated first jet hole a2. |
