Valeo Systemes Thermiques

Christian Casenave

Jean-Christophe Prevost

François Busson

Maryse Philippe

Frederic Meslin

Nicolas Tachot

A heat exchanger for an air-conditioning circuit of a vehicle. The heat exchanger enables heat exchange between fluids and has a surfaces in contact with one of the fluids. The surface is formed from aluminum and/or from aluminum alloy. The surface is coated with an alumina layer and a reinforcing layer. The reinforcing layer includes an organic substance and a mineral substance. The organic substance includes at least one polymer and the mineral substance is capable of reacting with the aluminum in order to form an anticorrosion material.

Heat exchanger coating

A heat exchanger for an air-conditioning circuit of a vehicle. The heat exchanger enables heat exchange between fluids and has a surface in contact with one of the fluids. The surface is formed from aluminum and/or from aluminum alloy. The surface is coated with an alumina layer and a reinforcing layer. The reinforcing layer includes an organic substance and a mineral substance. The organic substance includes at least one polymer and the mineral substance is capable of reacting with the aluminum in order to form an anticorrosion material.

Process for the manufacture of a heat exchanger, in particular an evaporator, comprising the preparation, assembling and brazing of components of the heat exchanger, the brazing being carried out under given temperature conditions. Prior to the assembling and to the brazing, a surface treatment operation is carried out that includes applying a coating to a chosen component, the coating including a support, at least one active agent suitable for giving the heat exchanger chosen properties during its operation, and at least one thermal protection agent suitable for enabling the coating to withstand the brazing temperature conditions.

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Le Mesnil Saint Denis, France

Christian Casenave