| 摘要 |
PURPOSE:To prevent a quantity of a gasified fuel from decreasing for a long period of time, to prevent carbon monoxide, an offensive smell, and soot from being produced attendantly thereto, and to assure a steady combustion, by a method wherein a plural row of pores are formed, and an air flame is formed in the pores at the upper-most stage. CONSTITUTION:Concentration of fuel gas in the vicinity of a fuel carbureter part 9a is sufficiently large during combustion at an initial time of the burning, and temperature is also low, thereby it is a region where a pore flame is usually difficult to form. The stream within a combustion chamber 5 flows in a vertical direction extending from the bottom to the top, and the air flowing in through lower pores flows in a direction extending to right above as it is diffused to some extent. Thus, an air stream is completely mixed with fuel gas therearound before it reaches lower pores, and a pore flame is not easily formed at a part positioned facing and opposite to the fuel carbureter part 9a. Even if it is formed, it is unsteady and is brought to an on-off state. In addition to the air fed through pores 3b at an uppermost stage of a pore row 3a, the air fed through the lower pores joins, and an air quantity becomes large at the vicinity of the pores 3b at the uppermost stage, whereby it forms a combustible region. |
