Heat exchanger for a motor vehicle, and method for manufacturing a cooling tube of a heat exchanger

US8991481B2 · kind B2 · utility

Assignee

• BEHR GMBH & CO. KG · DE

Inventors

• Hans Koch · Ditzingen, DE
• Matthias Pfitzer · Deizisau, DE

Key dates

• Filing date: Jan 7, 2011
• Grant date: Mar 31, 2015
• Expiry date: Jun 17, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49391
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A heat exchanger, in particular a heat exchanger of a motor vehicle, having cooling pipes and having collecting tanks, in which heat exchanger the cooling pipes extend between the collecting tanks, in which heat exchanger the cooling pipes and the collecting tanks are spatially connected to one another, in which heat exchanger the cooling pipes are produced from a strip material with at least one cooling pipe seam, in which heat exchanger the at least one cooling pipe seam forms an inner partition of the cooling pipe, and in which heat exchanger the cooling pipes have an external solder plating on the pipe outer side and the cooling pipes have more than one coating on the pipe inner side, wherein one of the coatings on the pipe inner side is arranged only partially in the region of the at least one cooling pipe seam, as a result of which particularly high demands with regard to a multi-coating layered construction of cooling pipes of the heat exchanger can be met in a cost-effective manner.