| 摘要 |
PROBLEM TO BE SOLVED: To provide a connecting structure and connecting method of a perforated pipe to branch pipes, in which each of the plurality of branch pipes is connected to a terminal part of the perforated pipe and brazing work can be easily performed. SOLUTION: Cuts 6 are formed on a boundary of an outer pipe part 2 and a partition wall 3 in the terminal part of the perforated pipe 1 in which inside of the outer pipe part 2 is partitioned by the partition wall 3 into a plurality of communication holes 4, 5. The terminal part of the outer pipe part 2 cut from the partition wall 3 by cuts 6 is shaped to form a flare part 7 of which diameter is enlarged outwardly toward the terminal. In the terminal part of the perforated pipe 1 made to be the flare part 7, each of the branch pipes 10 is inserted into each of the communication holes 4, 5, respectively in the back position of the cuts 6, and each of the branch pipes 10 is brazed with respect to the perforated pipe 1. COPYRIGHT: (C)2005,JPO&NCIPI |
