| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate laminated heat exchanger capable of reducing pressure loss while keeping strength of plates. SOLUTION: Both of core plates 53, 54 are shaped onto the roughly tabular shape, U-shaped convex portions 53a, 54a are respectively formed on one face side of each plate, and circular arcuate convex portions 153a, 153b, 154a, 154b for joining are formed on regions of U-turn at the other face side of each plate. A core 55 is assembled in a state the other face sides of two sheets of core plates 53, 54 are opposed to each other, and projecting portions 53a, 54a formed thereon are paired in opposite directions to constitute a high-temperature fluid chamber. The convex portion 153a for joining and the convex portion 154a for joining, and the convex portion 153b for joining and the convex portion 154b for joining are joined to each other to form a plurality of tubular high-temperature fluid flow channels in the regions of U-turn in the region in the high-temperature fluid chamber. On the other hand, a fin 100 is interposed in the region excluding the region of U-turn of the region in the high-temperature fluid chamber. COPYRIGHT: (C)2009,JPO&INPIT
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