| 摘要 |
In a laminated heat exchanger constituted by laminating tube elements. Each tube element is constituted by bonding two formed plates together to form a U-shaped flow passage interconnecting a pair of tank portions at one end. A plurality of shoal-like beads are formed in an area extending from the tank portions to the U-shaped passage portion. The bonding width of the shoal-like bead formed in the central area is greater than the bonding widths of the shoal-like beads formed on opposite sides. This improves the bonding strength in the central area where the tank portions change into the U-shaped passage portion to prevent rupture caused by high pressure fluid in the area. The strength of the area that is most likely to rupture in the area where the tank portions change into the U-shaped passage portion is increased. |
