| 摘要 |
<P>PROBLEM TO BE SOLVED: To promote contact between second combustion gas and air for preventing incomplete combustion in a combustion device burning the second combustion gas after burning first combustion gas. <P>SOLUTION: A second combustion gas jetting hole 23b is arranged in the position excepting above a straight line connecting the center of a flame plate 23 and a first combustion gas jetting hole 23a together. When the second combustion gas is burnt alone, a contact face between air jetted from the first combustion gas jetting hole 23a and flame formed by the second combustion gas is formed into a rugged gear shape, so that a contact area between the flame and the air is increased greatly, and the flame by the second combustion gas can take in a sufficient amount of air in comparison with a conventional one. <P>COPYRIGHT: (C)2008,JPO&INPIT |
