Title:
金属管の接合構造及び熱交換器
Document Type and Number:
Japanese Patent JP5310714
Kind Code:
B2
Abstract:
In order to realize a joint structure for metallic pipes which is capable of suppressing cost increase while suppressing a deterioration in reliability of a joint portion between metallic pipes, the present invention provides a joint structure for metallic pipes in which: one of a first metallic pipe (11) containing a first metal (M1) as a main component and a second metallic pipe (12) containing a second metal (M2) as a main component includes an expanded-diameter connecting part (13) which is formed at an end part of the one metallic pipe, an inner diameter of the end part is greater than an inner diameter of an adjacent part (16) that is adjacent to the end part; an intermetallic compound layer (15) of the first metal (M1) and the second metal (M2) is present at an interface of the first metal (M1) and the second metal (M2) located between a brazing filler metal (14) and the one or the other of the metallic pipes; and a thickness of the intermetallic compound layer (15) is configured such that the thickness of an end portion (15b) on the side of a base end (13b) is smaller than the thickness of an end portion (15a) on the side of an open end (13a).
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Inventors:
Kikuno Satoshi
Kido Teruo
Koji Yamashita
Kido Teruo
Koji Yamashita
Application Number:
JP2010293301A
Publication Date:
October 09, 2013
Filing Date:
December 28, 2010
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
B23K1/19; B23K1/18; B23K1/002; B23K31/02; B23K101/14; B23K103/10; B23K103/12; B23K103/18
Domestic Patent References:
| JP2000117484A | ||||
| JP2000079463A | ||||
| JP4083844A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Tamagushi Yukihisa
Masataka Otani
Tamagushi Yukihisa