Valeo Thermique Moteur

Frederic Letrange

Carlos Alberto Martins

Christian Marsais

A header plate has a central portion in which at least one row of holes are formed. The heat exchanger includes tubes which are fitted in these holes, and each hole is made in a press-formed element which comprises at least two raised elements aligned with each other. The respective dimensions of these raised elements are predetermined, and they are adapted to be pierced individually or in combination by means of perforating tools having different characteristic dimensions in at least the direction in which the raised elements are aligned with each other. Tubes of different dimensions in at least this alignment direction can be introduced into the holes.

Header plate for a heat exchanger, especially for a motor vehicle

A heat exchanger has a header plate which comprises a substantially flat base wall, which defines over at least part of its periphery a recess for receiving a claw element of a header cover. This recess is bounded on one side by projections formed on an inner face of the base wall, and on another side by a bent-back edge portion, from which retaining lugs extend. These retaining lugs are bent back to secure the header cover in position. The invention is applicable to heat exchangers for motor vehicles.

Heat exchanger header plate, a method for making it, and a heat

Flat tube for heat exchanger

A heat exchanger for a heating or cooling circuit of a motor vehicle comprises a header plate with a header cover sealingly secured over it, and a number of tubes extending through the header plate. The outer flanks of the collar portions of the header plate, which surround the ends of the tubes situated at the ends of the row of tubes are joined directly, along an inclined plane, to the peripheral channel in which the peripheral edge portion of the header cover is received. The overall length of the header plate, and therefore that of the heat exchanger as a whole, is thereby reduced.

Header plates for heat exchangers

A heat exchanger has a casing formed with two adjacent apertures to which two tubular pipe connections are secured. The apertures in the casing are so configured as to act as one half of a bayonet fitting, the other half of each bayonet fitting being a bayonet end portion fixed to each pipe connection. These bayonet end portions are adapted to be put into a locking position on the apertures, and are provided with base portions which are configured according to the spacing between the two apertures. The base portions have stop means which are arranged to cooperate with each other to lock the end portions in position when both of the latter are in their locking position. The invention is especially applicable to motor vehicle engine oil coolers.

Device for mounting two pipe connections on two adjacent apertures of a

A heat exchanger has a casing formed with two adjacent apertures, and two tubular pipe connections are mounted on the casing so as to communicate with these apertures in the latter. The two pipe connection are fixed with respect to a common base plate which is fastened to the casing by snap-fitting means, with the base plate having two orifices which communicate respectively with the two pipe connections and which are arranged to be aligned with the apertures in the casing, a sealing member being interposed between the base plate and the casing. The invention is especially applicable to radiators for cooling motor vehicle engine lubricating oil.

Growing community of inventors

Nanterre, France

Frederic Letrange