WO2018100312A1 - Heat exchanger header box for internal combustion engine intake module - Google Patents

Abstract

The subject of the invention is a header box (1) of a heat exchanger (12) intended to cool a stream of gas (A) admitted to a vehicle internal combustion engine, the header box (1) comprising a main wall and a collector plate (2) together delimiting at least two distinct compartments, the collector plate (2) comprising at least slots which are configured to accept tubes of the heat exchanger (12), characterized in that the main wall and the collector plate (2) form a one-piece body derived from a profile section formed by extrusion.

Description

 Intake manifold heat exchanger manifold of an internal combustion engine

The present invention relates to the field of heat exchangers fitted to motor vehicles, for cooling an air supplying an internal combustion engine of the vehicle. The present invention relates more specifically to the arrangement of a fluid collection box equipping such heat exchangers dedicated especially to the cooling of a supercharging air of said engine. In the automotive field, it is known heat exchangers dedicated to the cooling of the charge air of an internal combustion engine of a motor vehicle. Such heat exchangers provide a heat exchange between a coolant and the charge air. These heat exchangers conventionally comprise a housing provided with an air inlet for the admission of air and an air outlet for its evacuation towards the internal combustion engine. The housing also houses a bundle consisting of a stack of tubes and spacers, the cooling fluid flowing through the tubes while the air flows along the spacers.

In the main direction of extension of the tubes, the housing is provided with a header forming an interface between the beam and a fluid flow circuit. The manifold defines a fluid inlet chamber within the bundle and a fluid evacuation chamber out of the housing. The header also carries tubing for connection to the cooling system. The tubes open into the header by means of a header plate provided with slots for introducing the ends of the tubes therethrough.

For a technological environment similar to the present invention, reference may be made to FR2991039A1 (VALEO THERMAL SYSTEMS). In this context, it is to take into account various constraints related to the field of vehicles including automobiles, such as the ability of a component to be easily implanted in a motor compartment of a vehicle. It must also take into account a limitation of production costs in an industrial sector subject to notoriously severe economic competition. It is thus desirable to reduce the number of parts of a component, to simplify its production and to reduce or simplify the operations necessary for its manufacture. In such a constraint framework, the present invention relates to a header box of a heat exchanger, otherwise called heat exchanger, for cooling a gas flow admitted into an internal combustion engine of a vehicle, the box collector comprising a main wall and a collector plate defining together at least two separate compartments, the collector plate comprising at least slots configured to receive heat exchanger tubes, characterized in that the main wall and the collector plate form a monobloc body from a profile formed by extrusion.

The size on the heat exchanger of the assembly formed by the collector box and the collector plate can be significantly lessened by the usual architecture of heat exchangers of the same type. Thus, the adaptation and installation of the heat exchanger in an intake module of a vehicle in a constrained manner are facilitated, both technically and with respect to a commercial approach between the equipment manufacturer and the vehicle manufacturer.

The collector box object of the invention may comprise any of the characteristics listed below, taken alone or in combination:

 the slots are formed by punching through the collector plate,

 a thickness of the collecting plate is preferably lower, or at most equal, to a thickness of the main wall, to facilitate the formation of the slots by punching or machining,

the one-piece body advantageously has a profile extending uniformly in a direction parallel to the collecting plate, - each compartment has an identical section. Such a section is formed by a cross section of the compartments, perpendicularly or parallel to a direction of elongation of the slots,

 the collecting plate comprises overflows formed on either side of the main wall,

 - The one-piece body incorporates at least one wing from the main wall and extending transversely to the header plate to the outside of the compartment. This or these wings are thus formed regardless of the direction of extension of the compartments compared to the direction of elongation of the slots, that is to say perpendicularly or parallel to said direction,

 in a first variant embodiment, an extrusion direction of the profile is substantially perpendicular to a direction of elongation of the slots,

 the two compartments are formed by a first compartment which extends in a first longitudinal direction and by a second compartment which extends in a second longitudinal direction, and in which the first direction and the second direction are parallel and non-coincidental ,

 - The main wall comprises at least a first wall and a second wall which each extend in a plane, the plane of the first wall being concurrent with the plane of the second wall. In such a situation, the plane of the first wall and the plane of the second wall intersect,

 the main wall comprises a third wall which extends in a plane intersecting with the plane of the first wall and the plane of the second wall. A first edge is formed between the plane of the first wall and the plane of the third wall and a second edge is formed between the plane of the second wall and the plane of the third wall,

 the compartments are separated from each other by at least a part of the collector plate,

 a cross section of at least one of the compartments is of triangular or trapezoidal shape,

- At least one opening of each of the compartments which extends in a plane perpendicular to the header plate is closed by a closure wall attached to the manifold. It should be noted that the compartments each comprise a hole for receiving a connection pipe to a fluid flow circuit. outside the collection box. Such a hole may be formed in a closure wall or in the first wall or in the second wall,

 such a closure wall may be formed by a cheek which borders a bundle of tubes of the heat exchanger adapted to receive the manifold,

 in a second variant embodiment, an extrusion direction of the profile is substantially parallel to a direction of elongation of the slots,

 - An interior volume of the header is particularly divided into at least two adjacent compartments in a first direction of extension of the manifold. The compartments respectively provide a fluid inlet chamber inside the header and a fluid discharge chamber out of the header,

 the two compartments are formed by a first compartment which extends in a first longitudinal direction and by a second compartment which extends in a second longitudinal direction, and in which the first direction and the second direction coincide. While in the first variant, the compartments are next to each other, the compartments according to the second variant are aligned one behind or the other,

 at least one compartment is delimited by a bottom wall belonging to the collecting plate and by at least a first wall and a second wall belonging to the main wall and which each extend in a plane, the plane of the first wall being parallel to the plane of the second wall. The second wall and the bottom wall form a right angle. It's the same for the first wall and the bottom wall,

 - The compartment is delimited by a third wall belonging to the main wall, the third wall extending between the first wall and the second wall following a curved profile. It will be noted that such a profile can be concave, observed from the interior volume of the compartment. Alternatively, the profile can be convex, observed from the interior volume of the compartment,

- The first wall and the second wall have the same or different height. Such a height is measured along a line perpendicular to a plane in which the collector plate extends. Such an arrangement where the height of the first wall is equal to or different from the height of the second wall is applicable to the first variant of the invention described above. - The compartments are separated from each other by at least one partition wall oriented perpendicularly to the header plate. Note that according to an exemplary embodiment, such a partition wall is distinct from the one-piece body, and thus reported by insertion into the one-piece body,

 at least one opening of each of the compartments which extends in a plane perpendicular to the collector plate is closed by a closure wall,

 the partition wall and / or the closing wall or walls are inserted into the one-piece body by housing all or part of its wafer inside at least one groove formed in the main wall and / or in the plate; collecting,

 - The partition wall and / or the closing wall or walls comprise at least one hook adapted to attach the one-piece body to at least one cheek constituting the heat exchanger. According to an exemplary embodiment, the hooks emerge out of a volume delimited by the walls of the manifold. The invention also covers a heat exchanger for cooling a gas flow admitted into an internal combustion engine of a vehicle, comprising at least one manifold as detailed herein.

Advantageously, the heat exchanger comprises a bundle of tubes along which the gaseous flow to be cooled is intended to circulate, a first end of the tubes opening into at least one of the compartments of the header box through the slots in the header plate. .

In one example, the bundle of tubes is bordered by at least two cheeks, at least one cheek closes an opening of at least one compartment. According to this example, it is possible for the same cheek to close the opening of a first compartment and the opening of a second compartment. The other cheek may comprise at least one passage, or two passages, to allow the flow of fluid F in the manifold and in the bundle of tubes.

According to one aspect of the heat exchanger, at least one of the compartments of the manifold is in communication with a channel defined by a shell and by one of the cheeks of the bundle of tubes. At least one shell is provided with a tubing of connection to a hydraulic circuit for conveying the fluid outside the heat exchanger.

The compartments of the manifold are in respective communication with the channels via any of their open end faces. The channels are delimited by respective shells arranged at an outer face of at least one of the cheeks through which are formed passages connecting the compartments with the channels which are respectively assigned to them. The invention further covers an intake module of a gas flow for an internal combustion engine of a vehicle, comprising a cavity which receives a heat exchanger as set forth herein. In such a module, the one-piece body of the manifold can incorporate at least one wing from the main wall and which extends transversely to the header plate towards the outside of the compartment, forming an obstacle to the passage of the gas flow between the one-piece body and a wall of the intake module delimiting the cavity of the intake module which receives the heat exchanger.

The gaseous flow mentioned in this document can be a gaseous supercharging flow.

Other characteristics, details and advantages of the present invention will emerge more clearly on reading the description given below as an indication, in relation to the various embodiments of the invention illustrated in the figures of the attached plates in which :

 FIG. 1 is a perspective illustration of a heat exchanger according to a prior art to the invention,

 FIG. 2 is a perspective illustration of an exemplary embodiment of a header box according to the present invention, intended to equip a heat exchanger of the type shown in FIG. 1,

FIG. 3 is a perspective illustration of another embodiment of a header box according to the present invention, intended to equip a heat exchanger of the type shown in FIG. 1, FIG. 4 and FIG. 5 are perspective illustrations of another exemplary embodiment of a header box according to the present invention, intended to equip a heat exchanger of the type shown in FIG. 1,

 FIG. 6 is a side view of another embodiment of a header box according to the present invention, intended to equip a heat exchanger of the type shown in FIG. 1,

 FIG. 7 is a perspective illustration showing the manifold of FIG. 6 installed inside a gas flow admission module comprising a heat exchanger according to the present invention,

 - Figure 8 is a partial perspective illustration of a heat exchanger according to the present invention according to another particular embodiment.

It should first be noted that the figures show the present invention in detail and in particular ways of its implementation. Said figures, the general description and the detailed description can of course be used to better define the present invention, both in its particularities and in its generality.

Moreover, to clarify and make easy the reading of the detailed description that will be made of the present invention, the common organs shown in the various figures are respectively identified in the descriptions of these figures with the same numbers and / or letters of reference .

In Figure 1, a heat exchanger of the prior art is organized to cool air A of an internal combustion engine. For this purpose, the heat exchanger comprises a plurality of stacked tubes 102. The tubes 102 provide between them circulation passages for the air A admitted into the internal combustion engine. A heat transfer fluid also circulates in the tubes so as to lower the temperature of the air admitted into the internal combustion engine. A manifold 104 imposes the circulation of fluid F between adjacent tubes

103a, 103b and constituting a bundle of tubes. For this purpose, the manifold 104 has two compartments 105a, 105b respectively providing a supply chamber and a fluid evacuation chamber F. The compartments 105a, 105b each comprise a hole 106a, 106b provided with a pipe 107a, 107b for connecting the manifold 104 to a circuit 108 for conveying the fluid F to and out of the manifold 104. The compartments 105a, 105b each comprise an open face oriented towards a collector plate 109 interposed between the bundle of tubes and the manifold 104. The internal volume of the manifold 104 is delimited by two bulges 110 capping the manifold plate 109. The collector plate 109 has slots 111a, 111b oriented in a first direction D1 of extension of the manifold 104 and opening by a group of slots 111a, 111b superimposed inside the one and the other of the compartments 105a, 105b. In this context, the present invention proposes a particular arrangement of the manifold 1, illustrated for example in FIGS. 2 to 8. Indeed and in accordance with the present invention, the manifold 1 is formed by a main wall 4 and by a collector plate 2 forming the same one-piece body 3 from a profile formed by extrusion. As described, the main wall 4 and the first collector plate 2 are integral with each other according to the present invention, being incorporated in the same one-piece body 3 obtained by cutting a profile made by extrusion.

In the exemplary embodiments illustrated, the one-piece body 3 is more specifically derived from a profile formed by extrusion, extruded along an extrusion direction E. The extrusion formation of the one-piece body 3 gives it a regular profile. extending uniformly in the direction of extrusion E oriented parallel to a plane P in which the collecting plate 2 extends predominantly.

The manifold 2 thus has a main wall 4 and a header plate 2 delimiting compartments 5a, 5b respectively forming an inlet chamber 6a of the fluid and a discharge chamber 6b of the fluid F. The compartments 5a, 5b are arranged side by side side-by-side, adjacent in a first expansion direction D1 of the one-piece body 3. Each of the compartments 5a, 5b is delimited at least by a wall bottom 21a, 21b belonging to the header plate 2, by at least a first wall 10a and a second wall 10b both belonging to the main wall 4.

According to the alternative embodiment of Figures 2, 3, 6 and 7, the manifold 1 comprises a first compartment 5a which extends in a first longitudinal direction A and a second compartment 5b which extends in a second longitudinal direction B. These two longitudinal directions are aligned one beside the other and are parallel. It is understood here that the first compartment 5a and the second compartment 5b are adjacent and aligned side by side. In such a case, the first compartment 5a is separated from the second compartment 5b by the presence of a first wall 10a and / or a second wall 10b and / or a portion 42 of the collector plate 2 situated between the two compartments 5a, 5b.

The header plate 2 has a regular profile, in particular plane, which allows the formation of the slots 7a, 7b by punching or machining.

The main wall 4 extends along a second direction D2, the latter being perpendicular or parallel to the first direction D1, depending on the variant of the invention concerned.

On the exemplary embodiments illustrated in FIG. 2, FIG. 3, FIG. 6 or FIG. 7, the second direction D2 is oriented perpendicularly to the first direction D1 or in other words perpendicular to the direction of elongation of the slots 7a, 7b. . In the embodiment shown in Figures 4 and 5, the second direction D2 is oriented parallel to the first direction D1 or in other words parallel to the direction of elongation of the slots 7a, 7b.

According to this embodiment of FIGS. 4 and 5, the manifold 1 comprises a first compartment 5a which extends in a first longitudinal direction A and a second compartment 5b which extends in a second longitudinal direction B. These two longitudinal directions are parallel and confused. Here it is understood that the first compartment 5a and the second compartment 5b are one behind the other, aligned along a common longitudinal direction. In such a case, the first compartment 5a is separated from the second compartment 5b by a partition wall 17 threaded into the interior of the manifold 1. In such a variant, as well as in the variant embodiment of FIGS. 6 and 7, at least one compartment 5a, 5b, and advantageously the two compartments, are each delimited by the bottom wall 21a, 21b belonging to the header plate 2, by at least the first wall 10a, by the second wall 10b and by the third wall 10c all belonging to the main wall 4. The first wall 10a and the second wall 10b each extend in one plane and the plane of the first wall 10a is parallel to the plane of the second wall 10b.

It will be noted in all of Figures 2 to 7 that the header plate 2 has overflows 8a, 8b according to one or other of its dimensions in its plane P extension. Such overflows 8a, 8b extend outside the compartments 5a, 5b, that is to say at the edge of a junction between the header plate 2 and the main wall 4. The overflows 8a, 8b of the collector plate 2 may be used for fixing the header on the heat exchanger that receives it, or for the positioning of this heat exchanger in a cavity 11 of an intake module

40 arranged to receive such a heat exchanger 12.

In Figure 2, Figure 3 and Figure 6, the overflows 8a, 8b extend out of the inner volume of the compartments 5a, 5b only parallel to the first direction Dl.

In Figures 4 and 5, the overflows 8a, 8b extend out of the inner volume of the compartments 5a, 5b perpendicular to the first direction Dl. It should be noted that the overflows 8a, 8b are also likely to extend, for the same one-piece body 3, according to the two directions D1 and D2 of extension of the collector plate 2 in its plane P. On the exemplary embodiments illustrated in FIG. 2, FIG. 3 and FIG. 6, the main wall 4 extends regularly along the second direction D2 oriented perpendicularly to the first direction D1. The compartments 5a, 5b are thus delimited by respective caps 9a, 9b constituting the main wall 4. The caps 9a, 9b are in particular formed by bosses having a regular profile extending uniformly along the second direction D2. The caps 9a, 9b are arranged on the cover of the header plate 2, covering the groups of slots 7a, 7b formed through the header plate 2. The caps 9a, 9b extend at a distance from each other following the first direction

D1, being distinctly integral at their base of the header plate 2. Between these two caps, there is provided a non-zero distance formed by a portion 42 of the header plate 2. The main wall 4 comprises at least the first wall 10a and the second wall

10b. The first wall 10a extends in a plane inclined but not perpendicular to the plane of extension of the header plate 2. The same is true for the second wall 10b. The plane of the first wall 10a and the plane of the second wall 10b thus intersect above the row of slots 7a, 7b that these walls cover.

The first and second walls 10a, 10b of the main wall 4 extend in a third direction D3 oriented perpendicular to the plane P of the header plate 2. According to the embodiment of FIG. 3, the first wall 10a and the second wall 10b join forming a vertex 43, of rounded shape. In such a case, it is considered that the section of each of the compartments is triangular, one of the vertices of the triangle then being slightly rounded. According to an embodiment illustrated in Figure 2, the caps 9a, 9b have a trapezoidal shaped section. In such a case, the main wall 4 comprises a third wall 10c which delimits the compartment concerned by joining the first wall 10a to the second wall 10b. The third wall 10c extends in a plane parallel to the extension plane P of the header plate 2.

In these exemplary embodiments of FIGS. 2 and 3, each compartment 5a, 5b is delimited by the bottom wall 21a, 21b belonging to the header plate 2, by the first wall 10a and by the second wall 10b, both belonging to the wall. main 4. The first wall 10a and the second wall 10b each extend in one plane and the plane of the first wall 10a is concurrent with the plane of the second wall 10b. According to another embodiment illustrated in Figures 6 and 7, the caps 9a, 9b have a dome shape. In this case, the third wall 10c has a curved profile, in particular concave or convex, seen from the interior volume of the compartment 5a, 5b. In the case of Figures 6 and 7, the third wall 10c follows a concave profile. In Figure 2 and Figure 6, the profile of the caps 9a, 9b is preferably flattened along the third direction D3. As an indication, the dimension h of extension of the profile of the caps 9a, 9b measured along the third direction D3 is of the order of one-third of a dimension g measured between the first wall 10a and the second wall 10b, the thickness of these walls being included, along the direction of elongation of the slots.

The size of the caps 9a, 9b considered perpendicular to the plane P of the header plate 2 is thus preferably limited.

Thus, as illustrated in FIG. 7, the flattened conformation of the profile of the caps 9a, 9b facilitates an installation of the manifold 1 integrating the one-piece body 3 inside the cavity 11 of the intake module 40, by limiting the impact of such an installation on an increase in the overall size of the admission module.

Figures 2 to 5 illustrate openings 13a, 13b which terminate each of the compartments 5a, 5b. These openings 13a, 13b are oriented perpendicular to the plane P of the header plate 2. These openings 13a, 13b are the result of the extrusion process of the one-piece body 3. Some of these 13a, 13b compartments 5a, 5b can be set profit to spare passages for the fluid between the box collector 1 and its external environment. Such fluid passages connect the manifold 1 to a delivery circuit 14 of the heat transfer fluid F, as illustrated for example in Figure 9. The openings 13a, 13b which are not used to introduce or extract the heat transfer fluid F in the manifold 1 are closed by closing walls 15a, 15b. It may be a closing wall dedicated to the header, without interaction with the heat exchanger 12. Alternatively, the closure plates 15a, 15b are formed by cheeks bordering a tube bundle 23a, 23b of the exchanger 12, as can be seen in particular in FIG. 9.

According to a variant illustrated in FIG. 4 and FIG. 5, the openings 13a, 13b of the compartments 5a, 5b may be closed by closing walls 15a, 15b which are respectively assigned to them. In this case, the compartments 5a, 5b are each provided with a hole 16 adapted to receive tubings for connecting the manifold 1 to the delivery circuit 14 of the coolant F. In this case, the hole or holes 16 are formed through the first wall 10a or through the second wall 10b.

In Figure 6, it should be noted that the thickness (c) of the header plate 2 is less than or at most equal to any thickness (a) or (b) of the main wall

4. The thickness (a) corresponds to the thickness of the third wall 10c, while the thickness referenced (b) corresponds to the thickness of the first wall 10a and / or the second wall 10b. Such provisions are intended to facilitate the realization of the slots 7a, 7b by punching or machining through the header plate 2, while giving the main wall 4 a robustness avoiding deformation in operation. It should be noted that these arrangements can be transposed to the embodiment of the one-piece body 3 illustrated in FIGS. 2 to 5.

In addition, particularly as a result of the reinforcement of the main wall 4 provided by securing at its base to the collector plate 2, the thickness (a) of the third wall 10c is greater, or at most equal to, the thickness ( b) the first wall 10a and / or the second wall 10b extending perpendicularly to the plane P of the header plate 2. Moreover, and as an indication, the distance (e) separating the slits 7a, 7b from the first or second walls 10a, 10b of the main wall 4 is at least 3 mm (three millimeters) for a dimension (d) d extension of these walls measured perpendicularly to the header plate 2 of at least 5 mm (five millimeters). In other words, the distance (e) is between 0.4 and 0.8 times the distance (d).

In Figure 4 and Figure 5, the one-piece body 3 has as a reminder a regular profile extending uniformly in a second direction D2 parallel to the first direction Dl. As a reminder, the openings 13a, 13b of the one-piece body 3 are closed by closure walls 15a, 15b respectively oriented perpendicular to the plane P of the header plate 2 and the first direction Dl.

The first compartment 5a is in the extension of the second compartment 5b, according to the extrusion direction E. The delimitation between the first compartment 5a and the second compartment 5b is obtained by the presence of a partition wall 17 which extends perpendicularly at the plane P of the header plate 2 and perpendicular to the direction of elongation of the slots 7a, 7b.

As shown in FIG. 5, the compartments 5a, 5b are separated by the partition wall 17. According to this example, the partition wall 17 is of a conformation and orientation similar to those of the closure walls 15a. 15b which close the openings 13a, 13b of the compartments. The partition wall 17 and the closing walls 15a, 15b are fixed to the one-piece body 3 by interlocking, that is to say by inserting, their wafer inside grooves 18 formed in the header plate 2. Advantageously such a groove 18 may also be made on an inner face of the main wall 4, in particular only in the first wall 10a, only in the second wall 10b, only in the third wall 10c, or in a combination of these walls. Such an interlocking can be made in force and / or be completed by a seal, in particular when the brazing of the manifold 1 is soldered.

Thus, the partition wall 17 and / or the closure walls 15a, 15b can be introduced inside the manifold 2 by sliding their wafer to 18. Such a sliding is operated according to a general plane perpendicular to the first direction D1.

Furthermore, the partition wall 17 and / or the closing walls 15a, 15b each comprise hooks 19 or other similar assembly member. The hooks 19 are provided at each end of the partition wall 17 and / or closure walls 15a, 15b according to their extension perpendicular to the first direction Dl. The hooks 19 emerge outside a perimeter delimited by the header plate 2, the first wall 10a, the second wall 10b and the third wall 10c.

These hooks 19 form connecting members between the one-piece body 3 and cheeks 20a, 20b which line the tube bundle 23a, 23b of the heat exchanger 12.

In FIG. 6, the one-piece body 3 incorporates one or more flanges 22a, 22b extending along the second direction D2 and transversely to the plane P of the collecting plate 2. These flanges 22a, 22b can come from the extrusion process simultaneously. to the formation of the monoblock body 30.

The wings 22a, 22b are oriented towards the outside of the internal volume delimited by the compartment 5a, 5b carrying the wing. These wings 22a, 22b also extend in a direction opposite to the header plate 2, relative to the compartment concerned. At least one of these wings, and advantageously both, extends continuously along the second direction D2, that is to say perpendicularly to the direction of elongation of the slots 7a, 7b.

When the manifold 1 is installed inside the intake module 40 as illustrated in FIG. 7, at least one of the flanges 22a, 22b, and in particular both, forms an obstacle to the passage of the gas flow A for contain it substantially in the area of the cavity 11 where extends the tube bundle 23a, 23b. This limits the amount of gas flow A which in the prior art bypasses the heat exchanger and is therefore not heat-treated by it. In FIGS. 7 to 9, the heat exchanger 12 according to the present invention is organized to provide the heat treatment of the gaseous flow A, in particular air A. This gaseous flow can result from a supercharging of an engine with internal combustion of a motor vehicle. Such a specificity makes even more critical issues of sealing the gas flow of the heat exchanger 12 in its intake module 401, and the solutions proposed above by the invention are all the more interesting.

The tubes 23a, 23b, formed in rows, open at one of their ends inside the compartments 5a, 5b of the manifold 1. These tube ends pass through the manifold plate 2 through the series of slots 7a, 7b, formed in the header plate 2. The tubes 23a, 23b, combined with spacers disposed between each tube of the same row, form the tube bundle 23a, 23b of the heat exchanger 12. Such a heat exchanger is then formed by at least this bundle of tubes 23a, 23b associated with the manifold 1 described herein, that is to say comprising a one-piece body delimiting at least one supply chamber or heat transfer fluid of the tubes 23a, 23b, delimited by the main wall 4 and the collector plate 2.

Figure 7 illustrates the intake module 40 of gas flow intended to be installed at the intake of an internal combustion engine. This module may advantageously be a supercharged gas flow admission module. The gas stream can be air, but it can also be a mixture of an oxidant and a fuel.

The intake module 40 delimits the cavity 11 supplied with gas stream A by a gas flow circuit 24. Such a circuit comprises at least one gas flow inlet 25 for conveying the gas stream A to be cooled inside the module. intake 40 and at least one outlet 26 of gas flow to convey the gas stream A, cooled by the heat exchanger 12, to the internal combustion engine. The heat exchanger 12 is received in the cavity 11, so that an inlet face of the gas flow is in communication with the gas flow inlet 25 of the intake module 40, and an exit face the gas flow is in communication with the outlet 26 of gas flow of the same intake module 40. FIG. 7 also illustrates the interaction between the wings 22a, 22b issuing from the main wall 4 and an internal wall delimiting the cavity 11 of the admission module 40. At least one of these wings, and advantageously the two wings 22a, 22b , form an obstacle against the gaseous flow A which attempts to flow between the manifold 1 and the inner wall of the cavity 11. These wings 22a, 22b nevertheless have a flexibility that allows a difference in thermal expansion between the manifold 1 brazed to the heat exchanger 12, and the inner wall of the cavity 11 of the intake module 40.

It will be noted that the overflows 8a, 8b of the header plate 2 detailed above can also come into contact with the inner wall of the cavity 11, forming alone or in combination with the flange (s) 22a, 22b, a sealing device between the manifold 1 and the inner wall of the cavity 11, integral with the manifold 1.

In FIG. 8, it can be seen that the one-piece body 3 is disposed between two cheeks 20a, 20b of the heat exchanger 12. These cheeks 20a, 20b can fulfill the role of closing wall which closes the openings of the compartments 5a, 5b.

In FIG. 8, the admission chamber 6a is delimited by the first compartment 5a, while the evacuation chamber 6b is delimited by the second compartment 5b. The intake chamber 6a and the evacuation chamber 6b of the manifold 1 are in communication with the circuit 14 for conveying the heat transfer fluid F, via one of their openings 13a, 13b open on the Outside the heat exchanger 12. More particularly, the openings 13a, 13b open through one of the two cheeks 20a, 20b on respective channels 33a, 33b. The channels 33a, 33b are here delimited by shells 34a, 34b and by an outer face of the cheeks 20a, 20b, the shells 34a, 34b then being brought against the outer face of the cheeks 20a, 20b. The shells 34a, 34b are each provided with a pipe 35a, 35b for the connection of the channels 33a, 33b to pipes of the routing circuit 14 of the fluid F outside the heat exchanger 12.

Claims

 A collector box (1) of a heat exchanger (12) for cooling a gas flow (A) admitted to an internal combustion engine of a vehicle, the manifold (1) having a main wall (4) ) and a collector plate (2) defining together at least two separate compartments (5a, 5b), the collector plate (2) comprising at least slits (7a, 7b) configured to receive tubes of the heat exchanger (12) , characterized in that the main wall (4) and the collector plate (2) form a one-piece body (3) from a profile formed by extrusion. 2. header box (1) according to any one of the preceding claims, characterized in that the header plate (2) has overflows (8a, 8b) formed on either side of the main wall (4). 3. collector box (1) according to any one of the preceding claims, characterized in that the one-piece body (3) incorporates at least one wing (22a, 22b) issuing from the main wall (4) and which extends transversely at the collecting plate (2) towards the outside of the compartment (5a, 5b). 4. collector box (1) according to any one of the preceding claims, wherein the main wall (4) comprises at least a first wall (10a) and a second wall (10b) which each extend in a plane, the plane of the first wall (10a) being concurrent with the plane of the second wall (10b). 5. collector box (1) according to the preceding claim, wherein the main wall (4) comprises a third wall (10c) which extends in a plane intersecting the plane of the first wall (10a) and the plane of the second wall (10b). A header (1) according to any one of the preceding claims, wherein a cross-section of at least one of the compartments (5a, 5b) is triangular or trapezoidal in shape. 7. header box (1) according to any one of the preceding claims, wherein an extrusion direction (E) of the profile is substantially parallel to a direction of elongation of the slots (7a, 7b). 8. collector box (1) according to the preceding claim, wherein the two compartments (5a, 5b) are formed by a first compartment (5a) which extends in a first longitudinal direction (A) and by a second compartment (5b). ) which extends in a second longitudinal direction (B), and wherein the first direction (A) and the second direction (B) are combined. 9. collector box (1) according to any one of claims 7 or 8, wherein at least one compartment (5a, 5b) is delimited by a bottom wall (21a, 21b) belonging to the header plate (2) and by at least a first wall (10a) and a second wall (10b) belonging to the main wall (4) and which each extend in one plane, the plane of the first wall (10a) being parallel to the plane of the second wall (10b). 10. collector box (1) according to the preceding claim, wherein the compartment (5a, 5b) is delimited by a third wall (10c) belonging to the main wall (4), the third wall (10c) extending between the first wall (10a) and the second wall (10b) following a curved profile. 11. collector box (1) according to claims 9 or 10, wherein the first wall (10a) and the second wall (10b) have a different height. 12. collector box (1) according to any one of claims 7 to 11, wherein the compartments (5a, 5b) are separated from each other by at least one partition wall (17) oriented perpendicular to the collector plate (2). The header box (1) according to any one of claims 7 to 12, wherein at least one opening (13a, 13b) of each of the compartments (5a, 5b), which extends in a plane perpendicular to the plate collector (2), is closed by a closing wall (15a, 15b). 14. collector box (1) according to claim 12 and / or 13, wherein the partition wall (17) and / or at least the closure wall (15a, 15b) is inserted into the one-piece body (3) per housing; all or part of its slice inside at least one groove (18) formed in the main wall (4) and / or in the collector plate (2). 15. Heat exchanger (12) for cooling a gas flow (A) admitted into an internal combustion engine of a vehicle, comprising at least one manifold (1) according to any one of the preceding claims.