| 摘要 |
PURPOSE:To avoid separation of the air and improve the radiation efficiency by providing reinforcement members of a prescribed shape on oil paths formed by radiation plates. CONSTITUTION:Oil paths 6 are formed by uneven-shaped parts 7 provided to radiation plates 1. Reinforcement convex stripes 8 are provided to the parts forming the oil paths 6 along the longitudinal direction of the uneven-shaped parts 7 with a suitable interval. A concave step part 9 which makes the air flow along a valley groove of the oil path uneven-shaped part 7 to the top of the reinforcement convex stripe 8. The upper and lower end surfaces of the reinforcement convex stripe 8 are formed into slopes 10 which have top planes of the narrow width. By providing such reinforcement convex stripes 8, the air which flows along the valley grooves of the uneven-shaped parts 7 of the oil paths 6 flows without leaving the surfaces of the valley grooves. With this constitution, the separation of the air is avoided and the radiation efficiency is improved. |
