Heat-exchanger tube structured on both sides and a method for its manufacture

US6488078B2 · kind B2 · utility

Assignee

• WIELAND-WERKE AG · DE

Inventors

• Andreas Beutler · Weißenhorn, DE
• Guenter Fetzer · Gundelfingen, DE
• Ronald Lutz · Round Rock, US
• Gerhard Schuez · Werl, DE
• Andreas Schwitalla · Illerkirchberg, DE

Key dates

• Filing date: Dec 19, 2000
• Grant date: Dec 3, 2002
• Expiry date: Dec 19, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49391
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

The invention relates to heat-exchanger tubes structured on both inner and outer sides with excellent heat-transfer characteristics, which have recesses on the outside and ribs with specific dimensions on the inside. The structuring tools utilized for the various method modifications are adjusted in such a manner that they are not only able to create aligned, continuous grooves and non-aligned, spaced apart recesses but also secondary structures. The heat-exchanger tubes provided preferably with smooth end sections and smooth intermediate sections are utilized in particular in shell and tube heat-exchangers.