Mahle International Gmbh

Mahle Behr Gmbh & Co. Kg

Harald Bronner

Jens Ruckwied

Claus Augenstein

Jochen Haeussermann

Eberhard Pantow

Volker Kurz

Reinhard Kull

Stefan Weise

Walter Demuth

Stephan Posset

Silvia-Helena Klipphahn

Markus Gutjahr

Eduard Tyulyukovskiy

Markus Huebsch

Jochen HÄUSSERMANN

Peter Griessheimer

Markus HÜBSCH

A heat exchanger may include a heat exchanger block including a plurality of flat tubes held at a longitudinal end side in a respective rim hole of an associated tube plate. The respective rim hole may have at least two mutually opposite and substantially straight long sides and at least two mutually opposite narrow sides. A brazed connection may be disposed between at least one of the at least two long sides of at least one of the respective rim holes and a corresponding one of the flat tubes arranged therein, and the brazed connection may have an undulating brazing boundary. At least one of the plurality of flat tubes may include at least one partition. The undulating brazing boundary may have a high point that defines an increased thickness in relation to a plane running through two opposite groove bases disposed in the tube plate.

Heat exchanger

A heat exchanger may include a plate, a seal and a cover. The plate may have at least two receiving grooves having a respective groove base, an intermediate region disposed in a plane between a plurality of rim holes, and a ramp extending between the intermediate region and the respective groove base of the at least two receiving grooves. The seal extends in the at least two receiving grooves. The ramp may be rounded at a transition to the receiving grooves with a first radius and at a transition to the intermediate region with a second radius, and the ramp may be inclined between 20&#xb0;&#x3c;&#x3b1;&#x3c;65&#xb0; relative to the intermediate region or has an S-shaped progression. An inflection point of the plate may be arranged in a region from 10% to 80% of a height difference between the intermediate region and the respective groove base.

Heat exchanger with a circumferential seal

A heat exchanger, in particular an intercooler, is provided that includes at least one collector box that has a base. At least one tube engages into a passage in an approximately perpendicular manner with respect to the base, the passage protruding out of the base and surrounding a tube end, and the passage has a rectangular cross-section that is adapted to the outer circumference of the tube. The aim of the invention is to further extend the service life of the heat exchanger with a further reduction of the wall thickness of the collector box base as well as of the tube. This is achieved in that a wall thickness of the passage is thinned at least in a corner region.

Heat exchanger, in particular intercooler

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Bad Liebenzell, Germany

Harald Bronner