| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain heat exchange performance, and to reduce manufacturing costs. <P>SOLUTION: A plurality of slits 101 going through on upper and lower surfaces at a prescribed interval along a periphery are provided at the square periphery of a middle heat receiving body 2-1, and only one brazing filler metal sheet 100 is arranged between an upper heat receiving body 3 and the middle heat receiving body 2-1 for joining respective heat receiving bodies 1-3. Then, when joining the respective heat receiving bodies 1-3, the lower heat receiving body 1, the middle heat receiving body 2-1, the brazing filler metal sheet 100, and the upper heat receiving body 3 are laminated in this order and are set to a tool for joining. In this case, when the brazing filler metal sheet 100 is melted, the brazing filler metal sheet 100 flows to each slit 101 as shown by an arrow by a capillary phenomenon, and further enters between the middle heat receiving body 2-1 and the lower heat receiving body 1 for joining both of them. In this case, the upper heat receiving body 3 and the middle heat receiving body 2-1 are joined simultaneously. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
