| 摘要 |
PURPOSE:To make it possible to uniformly obtain high-temperature radiant heat radiation effective for heat collection in a large amount and on the entire surface with a simple construction by alternately arranging small diameter parts and large diameter parts, providing slant surface parts between the small diameter parts and large diameter parts, and dispersedly providing small holes for discharging combustion gas on the slant surface parts. CONSTITUTION:Small diameter parts 6 and large diameter parts 7 are arranged on a combustion cylinder 5 alternately and repeatedly in the vertical direction, and small holes 9 for discharging combustion gas formed on the slant surface parts form a zigzag shape at the upper stage and the lower stage on the inner side of the combustion cylinder 5. Thereby, the flow layer in which the surface of the combustion gas rises up along the inner wall of the combustion cylinder 5 becomes uniform. On the other hand, on the outer side of the combustion cylinder 5, small holes 9 at the upper stage and small holes 9 at the lower stage form a similar zigzag arrangement. Hence, a gas discharged in depressions through small holes 9 and 9 hit against the slant surface plate 8, and then is diffused in a turbulent manner. Thus the high- temperature gas stays within the depressions. As a result, since the surface of the combustion cylinder 5 is encircled by a high-temperature gas atmosphere and does not undergo cooling due to external air, the surface of the combustion cylinder 5 uniformly has a high temperature and the radiant heat quantity can be increased. |
