| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plate heat exchanger capable of avoiding a communicated state between a first flow passage and a second flow passage (so-called cross connection) when a crack occurs in a column part. <P>SOLUTION: The plate heat exchanger 1 includes a plurality of heat exchange plate bodies 10, each formed by joining a first heat exchange plate 101 and a second heat exchange plate 102 having irregular cross sectional shapes. The plate heat exchanger further includes the first flow passage 11 formed between the first heat exchange plate 101 and the second heat exchange plate 102 and in which a first fluid flows, the second flow passage 12 formed between adjacent heat exchange plate bodies 10 and in which a second fluid flows, and the column part 13 that receives pressurizing force 20 during brazing of the plate type heat exchanger 1. The column part 13 is formed by placing the first heat exchange plate 101 over the second heat exchange plate 102, and includes a bag structure portion 14 in which neither the first fluid nor the second fluid flows. <P>COPYRIGHT: (C)2012,JPO&INPIT |
