| 摘要 |
PROBLEM TO BE SOLVED: To suppress unnecessary reduction of a cross-sectional area of a flow channel for a heat exchange medium due to melted brazing material, in a heat exchanger constituted by placing in a furnace a plurality of laminated tube members formed so that a width of a flow channel of a heat exchange medium is narrowed to make high pressure act on the heat exchange medium by using a thin clad plate material, and brazing them.SOLUTION: A plurality of through holes 49a-49d for brazing material storage portions as long shaped through holes are regularly formed on a tube member 40 so as to be disposed only at one side of two formable arrangements between adjacent embossment along communication grooves 46a-46d at a prescribed distance from the adjacent communication grooves 46a-46d. A brazing material melted in brazing, is pushed out also to the communication grooves 46a-46d, but it is reduced in comparison with a case when the plurality of through holes 49a-49d for the brazing material storage portion are not formed.SELECTED DRAWING: Figure 2 |
