WO2018020136A1

WO2018020136A1 - Collector plate for heat exchanger

Info

Publication number: WO2018020136A1
Application number: PCT/FR2017/052062
Authority: WO
Inventors: Kamel Azzouz; Mohamed Asri
Original assignee: Valeo Systemes Thermiques
Priority date: 2016-07-29
Filing date: 2017-07-25
Publication date: 2018-02-01
Also published as: EP3491325B1; FR3054654A1; CN212673935U; FR3054654B1; EP3491325A1

Abstract

The subject of the invention is a collector plate 9, 9' able to be incorporated into a collector box 4, 4' that forms part of a heat exchanger 1 for a vehicle, the said collective plate 9, 9' comprising slots 17, 17', 20, 20' capable of housing one of the ends of tubes 10, 10' that form part of the heat exchanger 1, at least two groups of slots Gf1, Gf2 each being made up of slots referred to as open 17, characterized in that the collective plate 9, 9' comprises at least one slot referred to as blind 20, 20' formed between the two groups of open slots Gf1,Gf2.

Description

COLLECTOR PLATE FOR HEAT EXCHANGER

The present invention is in the field of heat exchangers in motor vehicles in which liquid fluids circulating through a bundle of tubes provide heat exchange between the heat exchanger and the ambient air. The present invention relates more specifically to the field of cooling radiators through which coolant fluids carried at different respective temperatures circulate distinctly. Radiators for motor vehicles are commonly used to cool the propulsion engine of the vehicle. Such a radiator is conventionally organized in a bundle of tubes interposed between two manifolds. The manifolds each comprise a manifold and a lid assembled together. The tubes are mounted on the collector boxes via

Their axial ends which open respectively inside the one and the other of the manifolds.

For this purpose, the manifold of each of the manifolds comprises a series of slots aligned along the manifold. The ends of the tubes

20 pass through the slots of the one and the other of the collectors, and thus open inside the collector boxes.

A radiator for a motor vehicle is likely to be traversed by heat transfer fluids heated to different temperatures. Such radiator 25 includes a so-called high temperature portion and a so-called low temperature portion. For this purpose, each of the manifolds comprises a partition separating their internal volume into two compartments through which the liquid fluid carried at different temperatures respectively circulates. The bundle of tubes then comprises two groups of tubes respectively assigned to the

The circulation of both fluids at different temperatures between the compartments of the manifolds. Thus, the radiator is segmented into two heat exchange portions through which respective heat transfer fluids can flow at different temperatures. In such a design, the radiator is subjected to temperatures that can be significantly different, thus generating a large temperature difference between the two heat exchange portions of the radiator. As a result, the radiator is deformed disparately because it is subject to thermal shock that can be consistent. Such thermal shocks should be avoided at the risk of deforming the radiator and degrade more or less rapidly by crack formation. Therefore, it has been proposed to interpose one or more inactive tubes between the groups of tubes respectively assigned to the circulation of fluids. A thermal barrier is then formed by the inactive tubes installed between the two groups of active tubes. In order to inactivate the tubes generating the thermal barrier, it has been proposed by the document FR 2 947 331 to close the ends of the inactive tubes by means of a sealing part integrated in the seal itself. placed between a collector and a lid. Thus, the fluids circulating inside the radiator manifolds can not be admitted inside the inactive tubes, which then protect the desired thermal barrier.

Such a solution is satisfactory, but it appeared to the use that it deserved to be improved. In particular, it seemed appropriate to achieve this closure at lower costs and to promote its sustainability. In this context, the present invention aims to provide a structurally simple solution to close the ends of the inactive tubes at lower costs, without affecting the efficiency of the heat exchanger and improving its durability. Such a solution is particularly advantageous because it limits the impact of the formation of the thermal barrier on the components of the manifolds. Indeed, the structural organization as well as the methods for obtaining the manifolds and assembly of the heat exchanger are simplified in particular because the length of the tubes used in the inactive portion is equal to the length of the tubes of the active portion. The present invention mainly relates to a header plate, otherwise called collector, constituting a manifold of a motor vehicle heat exchanger. The present invention also relates to such a header and such a heat exchanger, in particular used as a radiator.

The collecting plate of the present invention is essentially flat in configuration and suitable for being integrated in a collecting box constituting a circulating fluid heat exchanger for a motor vehicle. According to the invention, such a heat exchanger can be traversed by one or more fluids carried at different temperatures, such a heat exchanger being moreover arranged to be traversed by a flow of air, the fluids then transferring their calories to the airflow.

Such a manifold plate has successive slots adapted to accommodate one end of the respective tubes. At least two groups of slots, adjacent to each other, are each composed of so-called open slots, that is to say opening outwards to each of the large faces of the collecting manifold plate. These slots then pass right through the plate

20 collector.

Such open slots are dedicated to receiving one of the ends of the active tubes constituting a bundle of tubes interposed between two manifolds, thereby providing fluid communication therebetween. Such active tubes are potentially divided into two groups of active tubes which put into fluid communication separate compartments of two partitioned manifolds, including similar.

Such groups of active tubes open into the compartments

30 of both of the manifolds, being assigned to separate compartments of the one and the other of these manifolds. For this purpose, the groups of active tubes are nested within the groups of open slots of the header plate. Thus, respective circulations of heat transfer fluids at different temperatures are arranged between the manifolds via the active tube groups.

In this context, the collector of the present invention is mainly recognizable in that it comprises at least one blind slot provided between two open slots, or two groups of open slots.

Advantageously, the blind slot opens outwardly of the collector plate at a first of its large faces and is closed by a lid incorporated in the perforated wall to the second of its large faces opposite to its first large face.

At least one so-called blind slot is adapted to receive by nesting the ends of a tube rendered inactive by the blind character of the slot receiving it. In one example, the cap prohibits fluid communication between the inactive tube and the header box having a header plate according to the invention. Such an inactive tube can then form a thermal barrier between the groups of active tubes.

The choice of such a blind slot and / or the number of blind slots depends on the choice of the distribution of the slits of the collector plate between the two groups of open slots. More particularly, such a choice relates in particular to the number and the desired distribution of the active tubes placed in fluid communication with the respective compartments of the manifolds. Thanks to the arrangements provided by the present invention, at least one tube of said bundle of tubes is rendered inactive reliably and perennially.

The lid is incorporated in the header plate in that it can be formed directly by the header plate itself, in particular by

Punching when forming the slots, or be reported and sealed welded.

More particularly, the operculum can be formed directly from the constituent material of the collecting plate. In this case, the lid can indifferently substantially flush with the second large face of the header plate. Alternatively, the lid may form a bead of material projecting on the second large face of the header plate.

5

The lid may for example be derived from the material constituting the collecting plate, being formed by a material discharge of the collector plate from its first large face consecutively to the formation of the blind slot. Such formation of the operculum by repressing material may in particular be operated through a plate of metal material, for example aluminum or aluminum alloy. The discharge of material is for example operated during a drawing operation of the collector plate simultaneously aiming at forming the open slots and the blind slots. The operculum can thus be derived from the repressed material of the blind slot during such an operation.

15 stamping. For this purpose, the impression used to stamp the collector plate may comprise first punches to form the open slots and at least one second punch to form said at least one blind slot. In this context, the extension of the first punch is greater than the extension of the second punch, and the matrix opposite the fingerprint can be provided with a hollow

20 of setting in conformation of the operculum.

According to an alternative, the seal may be formed by a supply of material incorporated by welding or soldering to the collector plate. In this context, the lid is for example arranged in a cap covering an outlet of the blind slot 25 on the second large face of the header plate, on which the cap is welded to the edge of the blind slot.

The operculum arranged in cap may form a bead of material projecting on the second large face of the collector plate. For example again,

The lid may be arranged in pellet added to the outlet of the blind slot on the second large face of the collector plate, on which the pellet is welded to the edge of the blind slot. Such welding or soldering operations may arise from a passage in the brazing furnace of the exchanger of heat, where all brazed parts of the heat exchanger are made integral.

It should be noted that the blind slot preferably household a cell adapted to house and maintain the end of a tube in the header plate, for example perpendicular to its perforated wall. For this purpose, the depth of the blind slot is adapted to generate the maintenance of the inactive tube on the collector plate. Such a cell makes it possible to hold the end of the tube in the collector plate in the pre-assembled position, before the brazing furnace is passed through.

According to one embodiment, a depth of the blind slot is at least equal to two-thirds of the individual depth of the open slots. These depths are measured in a direction perpendicular to the large faces delimiting the collecting plate.

According to one embodiment, the cover forms a raised bead on the second large face of the perforated wall. Such provisions allow to increase if necessary the depth of the blind slot to improve the maintenance

Of the tube mentioned above.

According to one aspect of the invention, a bottom of the bead facing an outlet of the blind slot may be disposed at least substantially in the extension plane of the second large face of the header plate. In this context, the depth of the blind slot may be at least equal to the depth of the open slots. Again in this context, the extension of the bead can extend to the height of the extension of collars extending incidentally open slots.

The open slots may each be extended by a collar extending outwardly from the header plate to its second large face. In this case, the depth of the blind slot is preferably greater than the individual depth of the open slots and at most equal to the dimension cumulating the depth of the open slots and the extension dimension of the collars. It is thus understood that the depth of a blind slot measured between a plane passing through a large face of the collector plate and an inner wall delimiting the bottom of the slot is greater than the thickness of the collector plate, but less than the thickness of the collector plate. depth of the open slot added from the collar extension.

The lid may for example be formed of a plug incorporated by welding to the header plate at its second large face and at the edge of the blind slot. As previously referred to, such a plug is for example formed of a cap or a pellet.

In the context of the present invention, N adjacent blind slots are interposed between the two groups of open slots. According to the needs for extending the thermal barrier between the two groups of active tubes, it is indicatively proposed a number N of adjacent blind slots between 1 and 5 inclusive.

The present invention also relates to a manifold adapted to equip a vehicle heat exchanger. Such a collector box of this

The invention is mainly recognizable in that it comprises a collecting plate as referred to in the preceding paragraphs.

According to an exemplary embodiment, the manifold includes in particular a sealed collector plate to a closure lid of the collecting box. The manifold also has a partition dividing it into two separate compartments dedicated to the circulation of different or identical fluids. In this context, the two groups of open slots of the perforated wall open into said compartments respectively. At least one blind slot of the collector plate is located opposite one of the

30 compartments, the other compartments or the partition. It shows a simplification both structural and realization of the collector box. It should be noted that the compartmentalized arrangement of the header box, especially by partitioning, can be achieved independently of the conditions making inactive the tube forming the desired thermal barrier.

The present invention also relates to a vehicle heat exchanger, comprising manifolds such as the manifold that has just been described and a bundle of tubes comprising active tubes and at least one inactive tube. The manifolds are in particular arranged at the longitudinal ends of the participating tubes of the bundle of tubes.

It should be noted that the ends of all the tubes of the tube bundle are advantageously nested within all the slots that comprise one and / or other of the manifolds. The ends of the tubes of two groups of tubes, considered active, are nested inside the open slots opening into the manifolds. One end of at least one tube interposed between the two groups of tubes and considered inactive, is nested inside a blind slot providing a rupture of fluid communication with the collector box carrying the slit collector plate. blind. The groups of active tubes are able to provide respective circulations of identical or distinct fluids between the compartments of the manifolds to which the groups of active tubes are affected. Said at least one

The inactive tube is unfit to receive fluid flowing between the manifolds through the active tubes as a result of its closure by the blindness of the slot.

In other words, the ends of the active tubes open onto or into the interior volume of the manifolds through the open slots of the collector plates of the manifolds. Said at least one inactive tube is in fluid communication rupture with the manifolds as a result of a reception of its ends within the blind slots of the manifold plates that comprise the manifolds. So, a first group of

30 active tubes in fluid communication with first compartments of the manifolds, possibly assigned to the circulation of a first heat transfer fluid. A second group of active tubes in fluid communication with second compartments of the manifolds may be assigned to the circulation a second coolant heated to a different temperature of the first heat transfer fluid.

In this context, the outlets of all the active and inactive tubes 5 housed in the open or blind slots of the header plate may advantageously be arranged in the same plane, for example for each of the manifolds. Such arrangements make it easier to install the bundle of tubes between the manifolds during an operation of pre-assembly of all or part of the components of the heat exchanger before it is brazed in an oven.

In the description of the present invention, the term active is used to define at least one tube or group of tubes traversed by at least one liquid fluid. On the other hand, the inactive term applies to a tube or groups of tubes which is not traversed by the liquid fluid, thereby forming the intended thermal barrier.

Other characteristics, details and advantages of the present invention will emerge more clearly on reading the following description given by way of

20 indicative, in connection with the various embodiments of the invention illustrated in the figures of the attached plates, where:

FIG. 1 is a schematic view of an exemplary embodiment of a heat exchanger for a motor vehicle according to the present invention,

FIG. 2 is a fragmentary perspective view from below of a collecting plate equipping a heat exchanger according to the present invention;

FIG. 3 is a partial view from above of the collector plate illustrated in FIG. 2,

FIG. 4 is composed of several diagrams (a), (b), (c), (d) and (e)

Illustrating various embodiments of a header plate according to the present invention.

It should first be noted that the figures show the present invention of In a detailed manner and according to particular methods of its implementation, and that said figures can of course be used if necessary to better define the present invention, both in its features and in its generality. Moreover, in order to clarify and make easy the reading of the description that will be given of the present invention, the common organs represented in the various figures are respectively identified in the descriptions specific to these figures with the same numbers and / or reference letters. .

In FIG. 1, a heat exchanger 1 for a motor vehicle is at the double circulation of heat transfer fluids F1, F2. Although identified by two separate references, these fluids can be identical or distinct. By way of example, it may be a glycolated coolant heated to different temperatures. It may also be a glycol coolant and engine oil or gearbox or power steering, for example.

Such a heat exchanger 1 comprises two heat exchange portions 2 and 3 through which the respective fluids F1, F2 circulate. One of the heat exchange portions 2 is a main heat exchanger dedicated particular

20 to cooling the propulsion engine of the vehicle, whether thermal or electrical. In this context, the first portion 2 of heat exchange is traversed by a first F1 fluid currently heated to high temperatures. The other of the heat exchange portions is an auxiliary heat exchanger, in particular used to cool an accessory of the vehicle, as evoked

25 above. In this context, the second portion 3 of heat exchange is traversed by a second fluid F2 can be worn at moderate or low temperatures, compared with those of the first fluid F1.

In its generality, the heat exchanger 1 comprises two collector boxes 4, 4 'between which a bundle of tubes 5 extends. Each of the collector boxes 4, 4' is partitioned to provide two compartments 6, 7 and 6 ' , 7 'separate for receiving the first fluid F1 and the second fluid F2 assigned to them. The bundle of tubes 5 comprises two groups Gt1, Gt2, of tubes active 10 'for channeling the respective flows of fluids F1, F2 between compartments 6, 7 and 6', 7 '.

For this purpose, the ends 8, 8 'of the active tubes 10' open respectively through collectors or collector plates 9, 9 'in the compartments 6, 7 and 6', 7 'collector boxes 4, 4'. A thermal barrier is provided between the groups Gt1, Gt2 of active tubes 10 'to preserve the heat exchanger 1 from any degradation that may be induced by the temperature differences of the fluids F1, F2 flowing through. Such a thermal barrier is formed by one or more inactive tubes of tube bundle 5.

For this purpose, the inactive tubes 10 are mounted on the collectors 9, 9 ', in a non-emergent portion to the compartments 6, 7 and 6', 7 'of the manifolds 4, 4'.

The manifolds 4, 4 'each have in their generality a manifold 9, 9' sealed with a lid 11, 11 '. The manifolds 4, 4 'each also comprise a partition 12, 12' delimiting the compartments 6, 7 and 6 ', 7' through which the fluids F1, F2 respectively flow.

20

The manifolds 4, 4 'each further comprise end-pieces 13, 13' and 14, 14 'for their connection to circuits for conveying the fluids F1, F2 between the outside and the inside of the manifolds 4, 4' . In the exemplary embodiment illustrated, a first manifold 4 comprises two endpieces 13, 14

Respective admissions of fluids F1, F2 within the compartments 6, 7 assigned to them. The fluids F1, F2 flow through the active tubes 10 'from the compartments 6, 7 of the first manifold 4 to the corresponding compartments 6', 7 'of the second manifold 4'. The end pieces 13 ', 14' of the second header 4 'are then end pieces

30 discharge fluids F1, F2 out of the heat exchanger 1 to the circuits which are respectively dedicated thereto. Fins or spacers 15 are arranged between the tubes to promote heat exchange between the fluids flowing in the active tubes 10 'and an external air flow through the exchanger heat 1.

To mount the active tubes 10 'and inactive 10 on the manifolds 4, 4', the collectors 9, 9 'of each of the manifolds 4, 4' 5 each comprises a perforated wall 16, 16 '. The perforated walls 16, 16 'are each provided with slots 17, 17' and 20, 20 'for receiving, by interlocking, the ends 8, 8' of the tubes 10 ', forming the bundle of tubes 5.

The connection between the manifolds 4, 4 'and the bundle of tubes 5' previously mounted on the manifolds 4,4 'is commonly carried out by brazing inside an oven. It is advantageous that such an assembly can be carried out at lower cost regardless of the use of the tubes, active tubes 10 'or inactive tubes 10 more specifically. Thus, it is more particularly advantageous that the tubes 10, 10 'can be mounted on the manifolds 4, 4' 15 by means of tubes 10, 10 'of identical lengths. It is also advantageous if possible to have the outlets of the tubes 10, 10 'in the same planes at one and the other of their ends 8, 8'.

The shutter conditions of inactive tubes will now be detailed.

For this purpose in FIG. 1, FIG. 2 and FIG. 3, the perforated wall 16, 16 'of each of the collectors 9, 9' comprises two groups Gf1, Gf2 of open slots 17 dedicated to the reception of the active tubes 10 '. The open slots 17 open on one and the other of the large faces 18, 19 of the perforated wall 16, 16 '. As a result, the ends 8, 8 'of the active tubes 10' can pass through the perforated walls 16, 16 'to open into the compartments 6, 7 and 6', 7 'of the manifolds 4, 4'.

The perforated wall 16, 16 'of each of the collector plates 9, 9' also comprises blind slots 20 dedicated to the reception of the inactive tubes 10. The blind slots 20 open at a first large face 18 of the perforated walls.

16, 16 'intended to be oriented opposite the tube bundle 5, when the components of the heat exchanger 1 are assembled together. The blind slots 20 are closed by a cover 21 incorporated in the second large face 19 of the perforated walls 16, 16 ', opposite to the first large face 18. of the absence of outlet of the blind slots 20 on the compartments 6, 7 and 6 ', 7', the fluids F1, F2 present in the manifolds 4, 4 'can not be admitted nor circulate inside the tubes inactive 10, which then form the desired thermal barrier.

5

More particularly in Figure 4, various methods of forming the lid 21 are illustrated. The cover 21 is incorporated in the perforated wall 16 shown, either from the constituent material of the perforated wall 16 as illustrated in the diagrams (a) and (b), or by being attached to the perforated wall 16 I o by welding or brazing, as shown in diagrams (c), (d) and (e).

In the diagram (a), the cover 21 is formed by material discharge 22 being derived from the material pushed back from the blind slot 20. Such a formation of the cover 21 is obtained in particular from an operation of drawing 15 simultaneously arranging the open slots 17 and the blind slots 20 through the perforated wall 16 from its first large face 18.

In the diagram (b), the cover 21 is integrally molded to the first large face 18 of the perforated wall 16, in the case where the collector plate 9, 9 'is derived from a molding process.

On the exemplary embodiments illustrated in diagrams (c), (d) and (e), the cover 21 is formed by adding material to the second major face 19 of the perforated wall 16. Such an input of material is produced by soldering or welding 23

25 of a plug 24 to the second large face 19 of the perforated wall 16 at the edges of the blind slots 20. In the diagram (c), the plug 24 is more particularly constituted by a cap 25 covering the blind slot 20. On schemas (d) and (e), the plug 24 is more particularly constituted by a pellet 26 placed on the cover of the blind slot 20, substantially flush with the second large

3 o face 19 of the perforated wall 16.

In the diagram (d) of FIG. 4, the depth P1 of the blind slot 20 is equivalent to the depth P2 of the open slot 17. In the diagram (e) of FIG. 4, the pellet 26 is provided with a centering shaft 27 inside the blind slot 20. According to this example, the depth P1 of the blind slot 20 is smaller than the depth P2 of the open slot 17. In any event, it is preferable that the depth P1 of the one or more blind slots 20 is at least equal to two-thirds of the depth P2 of the open slots 17, to provide satisfactory maintenance of the inactive tubes 10.

To optimize the retention of the tubes 10, 10 'on the collector plates 9, 9', it is alternatively proposed to extend each of the open slots 17 by a flange 27. In this case, it is expedient to extend the cover 21 towards the outside of the second major face 19 on which the cover 21 forms a bead. Such an extension of the cover 21 makes it possible to increase the depth P1 of the blind slots 20, as illustrated in FIG. 1, in FIG. 2 and in the diagrams (a), (b) and (c) of FIG. Figure 4. In these figures, it appears that notwithstanding the presence of the operculum

21, the depth P1 of a given blind slot 20 may be greater than the individual depth P2 of the open slots 17.

More particularly in diagrams (a), (b) and (c) of FIG. 4, the depth P1 of the blind slot 20 is equivalent to the depth P2 of the slot

17 in the diagram (a), the formation of the collars 27 and the seal 21 by stamping induces an extension of the collar 27 greater than the extension of the operculum 21. In this context, the depth P1 of the blind slot 20 is greater than the depth P2 of the open slot 17 and smaller than the dimension

Accumulated depth P2 of the open slot 17 and the extension dimension d of the collar 27. In the diagrams (b) and (c), the depth P1 of the blind slot 20 is optimized by adding the depth P2 of the open slot 17 and the extension dimension d of the collar 27.

The heat exchanger 1 described above can be used as a cooling radiator installed on the front of a motor vehicle. Such a radiator can provide cooling of the internal combustion engine or an electric propulsion motor fitted to the vehicle, via the first portion heat exchange. The second portion of this radiator can provide useful heat exchange to a vehicle accessory. Such an accessory is for example constituted of an air conditioning installation of the passenger compartment of the vehicle. Such an accessory is for example still consisting of a cooling system of the electrical power organs of the vehicle. Such a cooling system is used especially in the context of a propulsion of the vehicle provided at least by an electric motor, such as for a vehicle with electric propulsion alone or for a hybrid vehicle in which the propulsion of the vehicle is provided by an engine. electric and / or a heat engine.

Claims

1. Collector plate (9, 9 ') adapted to be integrated in a collecting box (4, 4') constituting a heat exchanger (1) for a vehicle, said collecting plate (9, 9 ') comprising slots ( 17, 17 ', 20, 20') adapted to accommodate one of the tube ends (10, 10 ') constituting the heat exchanger (1), at least two groups of slots (Gf1, Gf2) being each composed of so-called open slots (17), characterized in that the collecting plate (9, 9 ') comprises at least one so-called blind slot (20, 20') formed between the two groups of open slots (Gf1, Gf2).

2. collector plate according to claim 1, wherein at least one so-called blind slot (20, 20 ') opens at a first face (18) of the header plate (9, 9') and is closed at a second face ( 19) by a cover (21) incorporated in a perforated wall (16, 16 ') that comprises the header plate (9, 9').

3. collector plate according to claim 2, wherein the lid (21) is derived from the material constituting the perforated wall (16, 16 '), being formed by a discharge (22) of material of the perforated wall ( 16, 16 ') from its first large face (18) following the formation of the blind slot (20, 20').

The header plate of claim 2, wherein the seal (21) is formed by a material supply (24, 25, 26) incorporated by soldering or soldering (23) to the perforated wall (16, 16 ').

5. The collector plate according to any one of claims 1 to 4, wherein the blind slot (20, 20 ') delimits a cell capable of holding the end of a tube (10) in the collector plate (9, 9). ').

A header plate according to any one of claims 2 to 5, wherein the cover (21) forms a raised bead on the second major face (19) of the header plate (9, 9 ').

The header plate of claim 6, wherein the depth (P1) of the blind slot (20, 20 ') is at least equal to the depth (P2) of the open slots (17, 17').

The header plate according to any one of the preceding claims, wherein N adjacent blind slots (20, 20 ') are interposed between two groups (Gf1, Gf2) of open slots (17, 17'), N being between 1 and 5 included. 9. Collector box (4, 4 ') adapted to equip a heat exchanger (1) for a vehicle, in which the manifold (4, 4') comprises a collecting plate (9,

9 ') according to any one of the preceding claims.

A header (4, 4 ') according to claim 9, wherein the header plate (9, 9') is sealed to a lid (1 1) for closing the header (4, 4 '), the collecting box (4, 4 ') having a partition (12) dividing it into two separate compartments (6, 7, 6', 7 ') dedicated to the circulation of respective fluids (F1, F2), the two groups (Gf1 , Gf2) of open slots (17, 17 ') of the collecting wall (9, 9') opening into said compartments (6, 7, 6 ', 7'), said at least one blind slot (20) of the collector plate (9, 9 ') being located opposite one of the compartments (6, 7, 6', 7 '), on the other of the compartments (6, 7, 6', 7 ') or the partition (12).

11. A heat exchanger (1) for a vehicle, characterized in that it comprises 25 at least one manifold (4, 4 ') according to any one of claims 9 or 10, the manifold (4, 4') ) being disposed at one end (8) of tubes (10, 10 ') constituting a bundle of tubes (5).

12. A heat exchanger (1) for a vehicle according to claim 11, wherein one end (8, 8 ') of all the tubes (10, 10') of the tube bundle.

(5) is nested within the open slots (17, 17 ') and blind slots (20, 20') that comprise the manifold (4, 4 '), the end (8, 8') of the tubes of two groups of tubes (Gt1, Gt2) being fitted inside said slots open (17, 17 ') opening into the header (4, 4') and the end (8, 8 ') of at least one tube (10) interposed between the two groups of tubes (Gt1, Gt2) is nested within a blind slot (20, 20 ').

13. Heat exchanger (1) for a vehicle according to any one of claims 1 1 or 12, wherein the outlets (8, 8 ') of the tubes (10') housed in the open slots (17, 17 ') and the outlets (8, 8 ') of the tubes (10) held in the blind slots (20, 20') of the collector plate (9, 9 ') are arranged in the same plane (PL).