Mahle International Gmbh

Behr Gmbh & Co.

Behr Gmbh Co. Kg

Mahle Behr Gmbh & Co. Kg

Wolfgang Geiger

Karl-Heinz Staffa

Christoph Walter

Hans-Joachim Krauss

Hagen Mittelstrass

Wolfgang Seewald

Martin Kaspar

Uwe Förster

Karl-Gerd Krumbach

Michael Sickelmann

Boris Kerler

Walter Demuth

Harald Raiser

Martin Kotsch

Christoph Kästle

Michael Kranich

Klaus Förster

Michael Geiger

Ingo Geiger

Alexander Satrapa

David Mayor Tonda

Dieter Gross

Thomas Herzig

Kai Mille

Markus Ruehl

Thomas Bruder

Gottfried Dipl-Ing Dürr

Andreas König

David Mayor-Tonda

Michael Paul Geiger

Christoph Dipl-Ing Walter

Karl-Heinz Dipl-Ing Staffa

Michael Dipl-Ing Kranich

Markus RÜHL

A method for closing a fillable collecting tank, in particular a fillable collecting tank of a heat exchanger for storing a fluid, having walls forming the collecting tank, wherein one of the walls is formed as a baseplate having openings for receiving pipes, wherein a filling opening for adding the fluid is provided in one of the walls, wherein the filling opening can be closed by the provision of a closure element that can be inserted into the filling opening or can be placed onto the filling opening after the fluid has been added to the collecting tank. A heat exchanger is also provided.

Method for closing a collecting tank

A heat exchanger, particularly for a heating or air conditioning system for motor vehicles, includes at least one inlet channel and at least one outlet channel and at least one collector, which has at least two metal sheets or plates abutting each other, and a flow device through which a first medium can flow, while a second medium can flow around the flow device. The first medium is distributed by an inlet channel to the collector and to the flow device and can be conducted to an outlet channel, and at least one further channel for distributing the coolant is provided, which is connected in a communicating manner via at least one opening to the inlet channel.

Heat exchanger having additional refrigerant channel

A heat exchanger, preferably an oil cooler () for a motor vehicle, comprises stacked flat tubes (), which have tube ends with apertures for admitting and discharging oil, which flows through the flat tubes () in their longitudinal direction. The apertures of adjacent flat tubes () are in fluid communication with one another in order to form flow passages, and spacings are left between the flat tubes for a medium, in particular a cooling medium, to pass through. The flat tubes are designed as extruded multi-channel tubes.

Heat exchanger, in particular oil cooler for a motor vehicle

The invention relates to a method for forming at least one flat-tube insertion slot in a header tube. A sawcut is introduced into the header tube during a sawing step, and the slot is configured, during a subsequent punching step, by means of a slot punch, which punches into the region of the sawcut. A rimmed opening can be configured during the punching step by using a slot punch with a larger width and/or length relative to the sawcut. The sawcut is preferably introduced to a depth less that the wall thickness of the header tube. The respective web region(s) between chamber of a multi-chamber header tube can be compressed during the punching operation to a level lower than that of a header-tube wall region functioning as a flat-tube insertion stop, in order to form a chamber-connecting duct.

Method of forming flat-tube insertion slots in a header tube

The invention relates to an air conditioner with a refrigerant loop containing a compressor, an evaporator, an accumulator positioned on the low-pressure side between the evaporator and the compressor, and an internal heat exchanger with a high-pressure side heat transfer channel and a low-pressure side heat transfer channel. According to the invention, the internal heat exchanger has a multichannel tube wound into a radial spiral or a meander shape. In addition or alternatively, the internal heat exchanger contains a multichannel tube which is positioned in the air current path of a cool air current of a high-pressure side condenser/gas cooler. Utilization, for example as a CO air conditioner in motor vehicles.

Air conditioner with internal heat exchanger and method of making same

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Ludwigsburg, Germany

Wolfgang Geiger