Heat exchanger useful as charge-air cooler for commercial vehicles

Inactive Publication Date: 2005-01-13
BEHR GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0005] In particular, it is an object of the invention to improve the hot strength of the heat exchanger components without the weight of the heat exchanger i

Problems solved by technology

The strength of aluminum decreases at temperatures over 150 degrees Celsius, which has adverse effects in particular on the components of a heat exchanger that are directly exposed to such a temperature.
One way to satisfy these high demands imposed on the temperature resistan

Method used

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  • Heat exchanger useful as charge-air cooler for commercial vehicles
  • Heat exchanger useful as charge-air cooler for commercial vehicles
  • Heat exchanger useful as charge-air cooler for commercial vehicles

Examples

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Example

[0012] According to the invention, the tubes, header plates, collector tanks and / or turbulence plates of the heat exchanger are made from a steel strip which is clad or coated with aluminum on one or both sides. The core material of the tube therefore consists of steel, i.e., a high-strength material which retains its strength even at relatively high temperatures. One or both outer sides of the steel strip are provided with a layer of aluminum which, on the one hand, protects the core material from corrosion and, on the other hand, allows the tubes to be brazed to the fins and to the header plate. This improvement to the strength and, in particular, the hot strength of the tube material is virtually neutral in terms of weight, i.e., does not result in a greater tube weight compared to aluminum tubes of greater wall thickness.

[0013] The term “tubes” is in general to be understood as meaning flow passages which can be produced from the aluminum-clad steel strip according to the inven...

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Abstract

The invention relates to a heat exchanger, preferably a charge-air cooler for motor vehicles, comprising: first members defining a plurality of passageways for guiding a first fluid in heat exchange relationship with a second fluid flowing over the outside of the members defining the passageways, and at least one second member forming a part of the heat exchanger structure in contact with either the first or second fluid, wherein at least one of the first members and the second member is comprised of a steel strip bearing at least one surface layer of aluminum and/or a brazing material.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS [0001] The right of foreign priority under 35 U.S.C. §119(a) is claimed based on Federal Republic of Germany Priority Application 103 28 748.5, filed Jun. 25, 2003, the entire disclosure of which, including the specification, drawings, claims and abstract, is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] The invention relates to a heat exchanger, in particular a charge-air cooler for vehicles. [0003] Known heat exchangers, in particular for motor vehicles, are usually made from aluminum or aluminum alloys. A heat exchanger of this type, as disclosed for example by DE-A 198 57 435, comprises a heat exchanger grid with fins and corrugated or web-like fins which are arranged between the fins and are brazed to the outer surfaces of the tubes, which are generally flat or rectangular tubes. The ends of the tubes themselves are held in header plates of collector tanks and are brazed to the header plates. For the brazing ...

Claims

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Application Information

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IPC IPC(8): F02B29/04F28F19/06F28F21/08
CPCF02B29/045F28D2021/0082F28F19/06Y02T10/146F28F21/084F28F21/089F28F21/082Y02T10/12
Inventor EMRICH, KARSTENKULL, REINHARDVOLKER, CORD
Owner BEHR GMBH & CO KG
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