公开(公告)号：US11320217B2

公开(公告)日：2022-05-03

申请号：US16988903

申请日：2020-08-10

申请人： UACJ Corporation

发明人： Yutaka Yanagawa ,  Norihisa Isomura ,  Yuki Totani ,  Yasuhiro Yagita ,  Tetsuro Hata

IPC分类号： F28F3/06 ,  F28F21/08 ,  B23K1/00 ,  B23K35/36 ,  B32B15/01 ,  B23K35/00 ,  B23K35/02 ,  B23K1/19 ,  B23K1/20 ,  B23K35/28 ,  B23K1/008 ,  B23K35/38 ,  H05K7/20 ,  B23K101/14

摘要： A method for manufacturing a heat exchanger (1) includes joining an inner fin (3) to a hollow structure (20) formed from at least two clad plates (200a, 200b) by heating and brazing a filler metal layer (B). Each clad plate has a core layer (A) composed of an aluminum alloy that contains Mg: 0.40-1.0 mass %. The filler metal layer is composed of an aluminum alloy that contains Si: 4.0-13.0 mass %, and further contains Li: 0.0040-0.10 mass %, Be: 0.0040-0.10 mass %, and/or Bi: 0.01-0.30 mass %. The inner fin is composed of an aluminum alloy that contains Si: 0.30-0.70 mass % and Mg: 0.35-0.80 mass %. A flux (F) that contains cesium (Cs) is applied along a contact part (201), and the vicinity thereof, of the at least two clad plates prior to the heating. A heat exchanger (1) may be manufactured according to this method.