| 摘要 |
PROBLEM TO BE SOLVED: To improve the heat efficiency of a collision surface by arranging multiple troughs in parallel with each other in a wall part facing to the impact jet flow, and arranging, each trough correspondingly to at least one impact jet flow so that the impact jet flow vertically collides with a bottom part of the trough. SOLUTION: Flat supports 1 respectively formed of a hole-provided thin plate having multiple impact flow openings 2 corresponding to a wall part 3 to be cooled by the cooling air are arranged with a space (collision space) 25 in a cooling air side of the wall part 3 to be cooled by the cooling air 5. Multiple semi-spherical trough 4 parts are arranged inside of the wall part 3 to be cooled. A space between the adjacent troughs 4 is decided so that a narrow web 7 is formed between the adjacent trough 4 and the wall part 3. In order to arrange each trough 4 so that the impact jet flow discharged from the opening 2 of the support 1 nearly vertically collides with a bottom of the trough, a wall part opposite to the impact jet flow, in which the heating gas 6 passes, is formed flat.
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