| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing plate heat exchanger which maintains the stable mechanical structure of a heat exchange block and the airtightness of each passage layer even for the frequent necessity of removing and rewelding a header. <P>SOLUTION: The heat exchange block 2 in a laminated structure is manufactured by alternately laminating partition plates 10 and passage structures 9, closing the whole passage structures with a metal side bar 11 at both edges of each partition plate, and carrying out brazing and joining between joint surfaces. Before attaching headers 5a, 5b to the heat exchange block 2, a cutout part matching the contour of an intermediate member 2 is milled in an attachment position 4, and the headers 5a, 5b are welded to the intermediate member 3 after joining the intermediate member 3 to the cutout part. <P>COPYRIGHT: (C)2011,JPO&INPIT |
