Flat tube, flat tube heat exchanger, and method of manufacturing same

US8683690B2 · kind B2 · utility

Assignee

• Modine Manufacturing Company · US

Inventors

• Werner Zobel · Eppelheim, DE
• Jens Nies · Holzgerlingen, DE
• Bernhard Stephan · Altenriet, DE
• Charles James Rogers · Racine, US
• Thomas Feldhege · Echterdingen, DE

Key dates

• Filing date: Jul 18, 2008
• Grant date: Apr 1, 2014
• Expiry date: Apr 6, 2031

Classification

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

Abstract

A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.