Connection between tubes and tube bottom for a heat exchanger

US5749414A · kind A · utility

Assignee

• Behr GmbH & Co. · DE

Inventors

• Herbert Damsohn · Esslingen am Neckar, DE
• Albert Schmitz · Basel, CH

Key dates

• Filing date: Dec 16, 1996
• Grant date: May 12, 1998
• Expiry date: Dec 16, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F9/18
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A heat exchanger assembly and method of making same are disclosed. A plurality of thin walled aluminum tubes are connected to a tube bottom. The tubes are first inserted into the tube support openings in the tube bottom with tube ends flush with a collecting space side of the tube bottom. The tube ends are then welded by a laser beam guided around the circumference of the respective tube ends.