| 摘要 |
PURPOSE:To simplify the manufacture of a flame intercepter and improve the working property and the like by a structure wherein the flame intercepter is provided on the undersurface of a top board at the position above the combustion section in a main body case and yet said flame intercepter is formed by tubularly and downwardly extruding the part of the top board at the position above the combustion section. CONSTITUTION:The combustion section 10 equipped with an outer casing 8, a semi-spherical net 9 and the like is arranged in a box-shaped main body case 7 with an open frontal face. In addition, the top board 11 equipped with exhaust holes 12 in its peripheral edges is provided above the combustion section 10. In this case, the cylindrical flame intercepter 19 is formed on the undersurface of the top board 11 by forming a groove 20, which is made by cylindrically and downwardly extruding the part of the top board 11 at the position above the combustion section 10. Due to the structure as mentioned above, the rising flame from the combustion section 10 is led into the flame intercepter 10, resulting in preventing the flame from leaking outside from the openings 12. Furthermore, the manufacture of the flame intercepter 19 can be simplified, because the flame intercepter 19 is formed by extruding the top board 11 downwardly. |
