| 摘要 |
PURPOSE:To prevent the damage of fluid flowing parts by pebbles etc., by a method wherein the width of the right and left side wall parts of a fluid passage forming element are made thicker than those of fins. CONSTITUTION:Fluid such as oil etc. flows in hollow bodies 4 to the arow direction A, and air flows in air flowing passages 12 to the arrow direction B. The heat contained in oilis transfered to the air, which flows the air flowing passages, through Al plates 2, fluid passage forming members 3 and Al plates 2. When such a heat exchanger 1 is used in a chemical plant etc., the outside of the side wall parts 6 of the fluid passage forming members 3 are exposed to the open air, and some times pebbles contained in sand dusts hit them. In this case, the side wall parts 6 of the right and left are made thicker than the width of the Al plates 2, the connecting wall parts 7 and the fins 8, there will be no damage even if pebbles etc. hit them. |
