| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas burner capable of performing slow combustion, improving combustion stability during low load combustion, and also improving durability. <P>SOLUTION: The gas burner 1 includes a combustion cylinder 4 allowing the passage of combustion air A and a burner nozzle 2 arranged in the combustion cylinder 4 and allowing the passage of a fuel gas F. A flange 3 is provided at the tip of the burner nozzle 2. A center protrusion 32 and an outer peripheral protrusion 34 are formed at the distal face 30 of the flange 3 by an annular recession 31. Inside the center protrusion 32, an inside flow-in recession 321 into which the fuel gas F flows is formed. In the center protrusion 32, a gas blow-out port 33 is formed which blows off the fuel gas F, flowing into the inside flow-in recession 321, to the outer peripheral side in a radial direction. In an outer peripheral protrusion 34, air blow-out ports 35A and 35B are formed which blows off combustion air A to the tip side in an axial direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
