Title:
両面を構造化した熱交換管の製造方法
Document Type and Number:
Japanese Patent JP4077296
Kind Code:
B2
Abstract:
The heat exchange tube (1) has outer fins (3) and inner fins (20) crossed by secondary grooves (22) Two rolling tools (11, 12) form the outer fins, and the inner fins are formed by two differently shaped rolling mandrels (15, 16), one forming the inner fins themselves, the other forming the secondary grooves in them.
Inventors:
Karin brand
Andrews Noepula
Andrews Beutra-
Ronald Lewis
Andrews Noepula
Andrews Beutra-
Ronald Lewis
Application Number:
JP2002309498A
Publication Date:
April 16, 2008
Filing Date:
October 24, 2002
Export Citation:
Assignee:
WIELAND-WERKE AKTIENGESELLSCHAFT
International Classes:
F28F1/36; F28F13/04; B21C37/20; B21H3/04; B21H3/10; F28F1/42
Domestic Patent References:
| JP62255794A | ||||
| JP1317637A | ||||
| JP54120446A | ||||
| JP7071889A | ||||
| JP2000193345A | ||||
| JP62000797A | ||||
| JP7270088A | ||||
| JP10263734A | ||||
| JP2001153580A |
Attorney, Agent or Firm:
Akiyoshi Sato