| 摘要 |
PURPOSE:To prevent a deformation due to a compressive loading of a duct unit by joining the end of a bend of a bowl-like plate to an adjacent duct unit. CONSTITUTION:An inlet tank depression 101 and an outlet depression 105 are connected to a duct depression 120. The duct depression 120 has multiple ribs 124 all over. On the opposite side to the depressions 101, 105, a bend 130 with its end folded back 131 is formed by bending the half length of a shorter side perpendicularly toward the adjacent unit. The remaining half length forms an extension 150 whose end is folded back 152. By joining the fold 131 of the bend and the fold 152 of the extension, the space between multiple duct units is maintained. Therefore, the bend 130 can prevent a dimensional change due to a compressive loading. |
