Method of making a heat exchanger

US4688311A · kind A · utility

Assignee

• Modine Manufacturing Company · US

Inventors

• Z. Philip Saperstein · Lake Bluff, US
• Dean A. Arneson · Racine, US
• Scott R. Larrabee · Racine, US
• Jeffrey A. Logic · Racine, US
• Norman F. Costello · Racine, US
• Russell C. Awe · New Berlin, US

Key dates

• Filing date: Jul 21, 1986
• Grant date: Aug 25, 1987
• Expiry date: Jul 21, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49885
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A tube having a plurality of hydraulically parallel fluid passages for use in a heat exchanger can be made by forming an elongated, undulating insert and disposing the same within a flattened tube. A noncorrosive brazing flux is adhered to at least one of the interior of the tube and the crests on the undulating insert. Braze alloy is also located at the interface of the crests of the insert and the interior wall of the tube. Thereafter, the insert is located within the tube without disturbing the flux and the tube deformed along its length to bring the interior of the tube into contact with the crests on the insert. The assembled tube and insert construction is then heated to braze joints between the interior wall of the tube and the crests of the insert along the entire length of the latter.