Heat transfer device for a motor vehicle and method of making same

US6202741A · kind A · utility

Assignee

• Behr GmbH & Co. · DE

Inventors

• Walter Demuth · Gerlingen, DE
• Peter Hafenbrak · Bad Rappenau, DE
• Michael Kohl · Britzingen, DE
• Kurt Molt · Bietigheim-Bissingen, DE

Key dates

• Filing date: Nov 23, 1998
• Grant date: Mar 20, 2001
• Expiry date: Nov 23, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4935
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A collecting box of a heat transfer device has a lengthwise partition in a collecting box between two rows of flat tubes. The tubes are designed as multichannel tubes that are divided by at least one lengthwise separating rib positioned at the level of the at least one lengthwise partition into a number of channels that corresponds to the number of collecting chambers. The at least one lengthwise partition is provided with its edge facing the tube ends with recesses with the spacing of the multichannel tubes. The recesses fit over the separating ribs of the multichannel tubes in a shapewise and flush manner and are connected tightly with the outside contours of the tube ends. In preferred embodiments the parts are made of metal and brazed together.