| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate connection type heat exchanger.SOLUTION: This invention relates to a heat exchanger constructed in such a way that some plates 50 having an upper plate 60 and a lower plate 70 are laminated, and blades 61, 71 of the upper plate 60 and the lower plate 70 are connected in brazing to form a flow passage therein. The blade part 61 of the upper plate 60 has an obtuse angle and is bent downward, and the blade part 71 of the lower plate 70 has an inserting surface 72 having an acute angle and bent inwardly and folded upward and a base surface 73 bent outward from the inserting surface 72, the blade part 61 of the upper plate 60 is inserted into the inserting surface 72 and a brazing coating space H is formed between the base surface 73 and the upper plate blade 61.SELECTED DRAWING: Figure 4C |
