Title:
内面螺旋溝付管および熱交換器と内面螺旋溝付管の製造方法
Document Type and Number:
Japanese Patent JP6964498
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an inner surface spiral grooved pipe which is a heat transfer pipe for a heat exchanger in which an inner surface spiral groove with a large twist angle is formed on a pipe material made from an aluminium alloy, and which generates neither crack nor break even when a hairpin bend portion is formed.SOLUTION: An aluminum inner surface spiral grooved pipe 10 is provided with a plurality of twist flow passages communicating in a length direction, on an inner peripheral surface 10b of a pipe body 10A. On the inner peripheral surface 10b of the pipe body 10A, a spiral weld line WL extending in the length direction is formed.SELECTED DRAWING: Figure 3
Inventors:
Yusuke Nakaura
Hateruma Yuki
Hateruma Yuki
Application Number:
JP2017231178A
Publication Date:
November 10, 2021
Filing Date:
November 30, 2017
Export Citation:
Assignee:
Mitsubishi Aluminum Co., Ltd.
International Classes:
F28F1/40; B21C1/14; B21C1/22; B21C23/10; B21D53/06; F28F1/32; F28F21/08
Domestic Patent References:
| JP2014140896A | ||||
| JP2013040361A | ||||
| JP10166086A | ||||
| JP62240108A |
Foreign References:
| WO2014104371A1 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami
Mitsuo Teramoto
Fumihiro Hosokawa
Kazunori Onami