EP2652425A2

EP2652425A2 - Stacked plate heat exchanger

Info

Publication number: EP2652425A2
Application number: EP11793771.4A
Authority: EP
Inventors: Jorge Ibarz Castello; Francisco Lopez Lazaro; José Antonio De La Fuente Romero; Javier Cuesta Gomez; Carlos Martins
Original assignee: Valeo Termico SA
Current assignee: Valeo Termico SA
Priority date: 2010-12-16
Filing date: 2011-12-06
Publication date: 2013-10-23
Also published as: WO2012080039A2; ES2407905B1; WO2012080039A3; ES2407905A2; KR20130132542A; ES2407905R1

Abstract

The invention relates to a stacked plate heat exchanger (1), comprising a plurality of stacked plates (2), between which the fluid to be cooled and the coolant fluid flow in two independent circuits defined by said plates (2), in alternating layers, all or some of said plates (2) having a rim or rims defining a flow duct for the coolant fluid by engaging with another of said plates which is provided adjacent thereto. According to the invention, said rim or rims are designed to allow the coolant fluid to pass into and/or out of said duct.

Description

Stacked plate heat exchanger.

The present invention relates to a stacked plate heat exchanger. The invention applies to any type of heat exchanger, especially for a motor vehicle, such as for example exchangers intended to be mounted in the engine compartment of the vehicle such as charge air coolers (RAS) or exchangers recirculation of the engine exhaust gas, also called EGR (Exhaust Gas Recirculation Coolers or EGRC).

In this field, it is known heat exchangers comprising a series of parallel plates forming heat exchange surfaces, between which a fluid to be cooled and a cooling fluid circulate, in alternating layers, in fluid passage circuits , spacers may be provided to improve the heat exchange between the fluid to be cooled and the cooling fluid. The stack of the plates is thus configured to define two different circuits: that of the fluid to be cooled and that of the cooling fluid. The cooling fluid arrives in the exchanger and in its passage circuit via inlet / outlet flanges, or inlet / outlet pipes, arranged on the lower and / or upper sides of the exchanger.

On these exchangers, the plates are provided with stamped pockets punctured perpendicularly to the plane of the plate for the passage of the coolant from one coolant circulation layer to the other without communicating with the fluid circulation layer to be cooled. located between the two. These stamped pockets have numerous drawbacks, including the reduction of the exchange surfaces, the reduction in the resistance to pressure, the absence of cooling of the fluid to be cooled flowing near the pockets or the risk of leakage. In addition, because of this configuration, the inlet / outlet pipes of the cooling fluid must be located perpendicular to the plates and their positioning is thus limited to both sides of the exchanger parallel to the plates, that is to say at the upper and / or lower sides of the exchanger. A disadvantage is that it limits the various possible configurations of connection of the exchanger.

Because of the market trend of reducing available space for heat exchangers and their components, the environments in which they must be integrated are becoming more complex. It is therefore important to develop compact heat exchangers that offer a high degree of freedom of adaptation, particularly in the positioning of the inlet and outlet pipes of the cooling fluid, in order to be able to integrate the assembly efficiently in available space.

The stacked plate heat exchanger of the present invention aims to overcome the drawbacks of the exchangers known in the art, by proposing a new plate design allowing access of the cooling fluid by side faces of the stacked plates, it is ie faces perpendicular to the stacked plates, keeping the two circuits of heat and cold separated by the configuration of the respective plates.

It proposes for this purpose a stacked plate heat exchanger, comprising a plurality of stacked plates between which the fluid to be cooled and the cooling fluid circulate in two independent circuits defined by said plates, in alternating layers, all or part of said plates comprising one or more borders defining a circulation channel for the cooling fluid by cooperation with another of said plates, provided adjacent.

According to the invention, the one or more borders are configured to allow the cooling fluid to enter and / or exit said channel. Such a design makes it possible to place the inlet and the outlet of the cooling fluid in the exchanger both at the level of lateral zones situated on the lateral sides of the exchanger, and of zones situated on the upper and / or lower side of the exchanger. the exchanger, that is to say at the top and / or bottom of all the stacked plates, rather than only at the upper and lower parts of all the plates stacked as was the case in the exchangers known in the state of the art. By giving more freedom of positioning of the pipes on the different sides of the exchanger, this offers a greater number of possibilities for integrating the exchanger on a vehicle.

The invention also makes it possible to increase the exchange surface and to prevent a part of the flow of fluid to be cooled from being poorly or poorly cooled.

According to one aspect of the invention, the one or more edges comprise a side bevel edge defining an inlet and / or an outlet of the cooling fluid communicating with the adjacent cooling fluid layer (s).

According to one aspect of the invention, the one or more edges are raised edges, in particular peripheral, derived from the material of said plates. They are for example obtained by stamping the plate.

According to one aspect of the invention, each plate has a longitudinal closing side wall, and each pair of plates is mounted with its respective lateral walls arranged at the longitudinal ends to ensure the separation and closure of the circuits, said beveled edge lateral side located in one of the longitudinal ends of the plates for receiving the cooling fluid, so that each pair of plates has in opposite lateral ends an inlet bevel edge and a bevel edge of the cooling fluid outlet.

In other words, in one embodiment, the invention relates to a stacked plate heat exchanger comprising a plurality of stacked plates between which the fluid to be cooled and the cooling fluid circulates. between two independent circuits defined by said plates, in alternating layers, each plate having a longitudinal longitudinal closing wall, and each pair of plates being mounted with its respective lateral walls disposed at the longitudinal ends to ensure the separation and closure of the circuits characterized in that each plate comprises a side bevel edge at one of its longitudinal ends for receiving the cooling fluid, so that each pair of plates has in opposite lateral ends an entrance bevel edge and a leading edge. bevel output of the cooling fluid.

Advantageously, each plate comprises, for example, a plurality of corrugations distributed in a zone intended for heat exchange, that is to say in the channel (s) of circulation of the cooling fluid. Said corrugations are distributed according to a diagram defined in such a way as to orient and render the flow of cooling fluid turbulent in order to prevent the overflow of the cooling fluid circuit and thus to avoid the risk of the flow receding even of zones no flow. It is therefore possible to obtain maximum filling of the plate by the cooling fluid. Each plate includes, in particular, peripheral corrugations designed to maintain the distance along the space separating each pair of plates so as to avoid the risk of deformation of the stacked plates and the associated leakage problems. Each plate comprises, for example, orifices provided for the insertion of respective securing bars for immobilizing the set of plates stacked during its assembly.

Each plate comprises, in particular, a transverse central corrugation provided to allow a "U" flow of the cooling fluid, that is to say in two passes. Each plate may have a plurality of transverse central corrugations so as to define at least three passes for the flow cooling fluid, and for example three central transverse corrugations to define four passes.

Each plate optionally has wings folded at the two longitudinal ends. Said wings confer rigidity and dimensional stability to the group of plates.

Advantageously, the exchanger comprises a housing designed to house the set of stacked plates and comprising two lateral collectors mounted facing the side bevel edges of the plates. The housing is for example provided with two opposite lateral sides, and two sides, lower and upper, opposite each other, connecting the two lateral sides, and being opposite the upper and lower plates of the stack. Preferably, the manifolds of the housing are connectable together to thereby close said housing.

The collectors are located, for example, on lateral sides of the housing, possibly the same side. At least one of the collectors, see both, may extend to one and / or the other of the lower and upper sides. The collectors are obtained, in particular, by stamping the sides of the housing.

Advantageously, the exchanger comprises an inlet flange and a cooling fluid outlet flange disposed in the lateral manifolds of the housing.

According to one embodiment of the invention, the inlet and outlet flanges of the cooling fluid are respectively disposed on the opposite side sides of the housing, for example for a configuration in an odd number of passes of the fluid flow. cooling. It may especially be a linear flow.

According to another embodiment of the invention, the inlet and outlet flanges of the cooling fluid are arranged on the same lateral side of the housing for example for a configuration in an even number of passes of the cooling fluid flow. It may especially be a flow "U".

According to another embodiment of the invention, the inlet and outlet flanges of the cooling fluid are arranged on two successive sides of the housing.

According to one aspect of the invention, the housing consists of two half-shells in the shape of "U".

According to one aspect of the invention, the housing consists of a casing shaped "U" closed by a cover.

Side walls of the housing or half shells may be soldered to the plates, in particular to their longitudinal closing wall.

In order to facilitate the description of what has been explained above, drawings are enclosed in which are shown, in schematic form and by way of non-limiting example only, practical examples of embodiment of the plate heat exchanger. stacked of the invention. In these drawings:

FIG. 1 is a perspective view of a heat exchanger, in particular an EGR exchanger, according to a first embodiment of the cooling fluid circuit of the invention;

FIG. 2 is a perspective and exploded view of the exchanger illustrated in FIG. 1;

FIG. 3 is a perspective view of a plate of the invention;

FIG. 4 is a perspective view of two pairs of stacked plates;

- Figure 5 is an enlarged view of a side bevel edge of the plate; FIG. 6 is an enlarged view of one half of the plate illustrating a wave pattern; FIG. 7 is an enlarged view of the central part of the plate illustrating the peripheral corrugations, the transverse central corrugation and an orifice provided for the introduction of a securing bar;

- Figure 8 is an enlarged view of a wing of the plate;

FIG. 9 is a cross-sectional view of a pair of plates illustrating the junction of two plates;

- Figure 10 is a perspective view of the heat exchanger of Figure 1 with a variant of the fluid circuit to be cooled;

- Figure 1 1 is a perspective view of the heat exchanger of Figure 1 with another variant of the fluid circuit to be cooled; FIG. 12 is a perspective view of the heat exchanger of FIG. 1 with another variant of the circuit of the fluid to be cooled;

FIG. 13 is a perspective view of the heat exchanger of FIG. 1 according to a second embodiment of the cooling fluid circuit of the invention; and

- Figure 14 is an exploded perspective view of a heat exchanger, including a RAS according to an alternative embodiment of the invention. According to a first embodiment and with reference to FIGS. 1 and 2, the heat exchanger 1 is an EGR type heat exchanger in which the fluid to be cooled is EGR gas and the cooling fluid is a heat transfer fluid, in particular a mixture of water and glycol. The exchanger 1 comprises a plurality of stacked plates 2 between which the fluid to be cooled and the cooling fluid circulate in two independent circuits defined by said plates 2, in alternating layers. Interlayers 15 are optionally provided on the fluid flow circuit to be cooled to improve the heat exchange between the two fluids.

A housing 10 is provided to surround said plurality of plates along four sides of the exchanger and thus has four sides: two lateral sides opposite each other, one upper side and one lower side, also opposite to each other and connecting the two lateral sides.

As can be appreciated in FIGS. 3 and 4, each plate 2 comprises a longitudinal closing side wall 3, extending in a direction perpendicular to the plate 2, each pair of plates 2 being mounted with its respective lateral walls 3 arranged at the longitudinal ends, in opposite directions, to ensure the separation and closure of the circuits. Thus, each pair of plates defines, thanks to its side walls 3, a path for the fluid to be cooled. The cooling fluid circulates however between two pairs of successive plates, that is to say between two adjacent plates 2 of two pairs of successive plates. Each plate 2 has for this purpose one or borders 20, extending in a direction opposite to that of the longitudinal walls of the plate 2 to which they belong. They define a circulation channel for the cooling fluid by cooperation with the edge or edges of another of said plates 2, provided adjacent and belonging to another pair of plates. The channel thus defined, allows a flow of the cooling fluid in a plane perpendicular to that of the stack, that is to say parallel to the plates 2.

The edges 20, or raised edges, are for example obtained by stamping the plate. The plate thus has a bottom 21, on which the fluid will circulate, delimited by the borders 20. Thus the bottom 21 is devoid of holes of fluid passage. As shown in Figures 3 and 4, the borders are in particular located at the periphery of the plate. The cooling fluid thus circulates on a maximum surface of the plate exchanging heat with the cooling fluid flowing on the other side of the bottom 21 of the plate.

According to the invention, the edge or edges 20 are configured to allow the cooling fluid to enter and / or exit the channel. By way of example, each plate comprises a lateral bevelled edge 4 defining an inlet and / or an outlet of the cooling fluid communicating with the neighboring cooling fluid layer or layers.

The lateral bevelled edge 4 of a plate is located in particular in one of its longitudinal ends intended to receive the cooling fluid, as can be seen in FIGS. 3 to 5, so that each pair of plates 2 comprises in opposite side ends an inlet bevel edge 4 and a bevel edge 4 of the cooling fluid outlet.

In Figure 4, there is shown on the plates 2 of the inlet arrows Re and Rs output of the cooling fluid as well as G input and Gs exit arrows of the gases.

The design of the plates 2 provided with these lateral bevelled edges 4 makes it possible to place the inlet and the outlet of the cooling fluid at the lateral zones of the exchanger 1, rather than at the level of the upper part of the assembly. of plates stacked 2 as was the case in the exchangers known in the state of the art.

The more compact nature of the exchanger 1 thus obtained facilitates its mounting in the reduced space of the engine block.

As can be appreciated in FIGS. 3 and 6, each plate 2 comprises a plurality of corrugations 5 distributed in the zone intended for heat exchange, that is to say on the bottom 21 of the plate 2. ripples 5 are distributed according to a diagram defined to orientate and turbulent the flow of cooling fluid to prevent overflow of the cooling fluid circuit and thus avoid the risk of receding flow or lack of flow in some place of the plate. It is therefore possible to obtain a maximum filling of the plate 2 by the cooling fluid.

In FIGS. 3 and 7, it can be appreciated that each plate 2 comprises in particular four peripheral corrugations 6 designed to maintain the distance along the space separating each pair of plates 2 so as to avoid the risk of deformation of the stacked plates 2 and the associated leakage issues.

Each plate 2 comprises for example two orifices 7 provided for the insertion of two securing bars 7a for immobilizing the set of stacked plates 2 during its assembly.

Each plate 2 further comprises a transverse central corrugation 8 provided to allow the flow "U" of the cooling fluid, that is to say in two passes. The plates 2 of the invention therefore integrate the function of separating the two circuits of the cooling fluid and the fluid to be cooled, and the guiding function of the fluid flows by means of the lateral bevelled edges 4 and the special pattern of corrugations. 5 to 8. The design of the plates 2 may further be made of stainless steel or aluminum. They are, for example, brazed together as well as to the other components of the exchanger, in particular the housing 10.

Referring to Figures 8 and 9, each plate 2 has folded wings 9 at its two longitudinal ends. Said wings 9 confer rigidity and dimensional stability to the group of plates 2. In FIGS. 1 and 2, it can be appreciated, as already stated, that the exchanger 1 comprises a housing 10 designed to house the set of stacked plates 2. The housing 10 comprises in particular two lateral collectors 10a, 10b, situated on the sides the side collectors 10a, 10b of the housing 10 are connectable together to thereby close said housing 10.

The exchanger 1 also comprises an inlet flange 11 and an outlet flange 12 of the cooling fluid arranged in the lateral collectors 10a, 10b of the housing 10.

The flanges 11, 12 may be arranged respectively on opposite sides of the housing 10 for a linear configuration of the cooling fluid flow, as can be seen in Figures 1, 10, 11 and 12, or be arranged on the same side of the housing 10 for a configuration "U" of the flow of the cooling fluid, as can be seen in Figure 13.

Various embodiments of the exchanger 1 illustrating in all cases the flanges 1 1, 12 of the coolant located at the sides of the housing 10 will now be described.

According to a first embodiment of the exchanger 1 illustrated in Figure 1, the inlet flanges 1 1 and the outlet 12 of the cooling fluid are disposed on opposite lateral sides of the housing 10 in a linear configuration.

In this case, the configuration of the gas circuit is also linear and uses a gas manifold 13 at the inlet end of the EGR gas and a connection flange 14 at the other end of the outlet. EGR gas. In Figure 10, there is illustrated a variant of the exchanger 1 of Figure 1 wherein the configuration of the EGR gas circuit is also linear, but uses a gas manifold 13 at each end. In Figure 1 1, there is illustrated another variant of the exchanger 1 of Figure 1 wherein the configuration of the EGR gas circuit is also linear, but uses a connecting flange 14 at each end. FIG. 12 illustrates another variant of the exchanger 1 of FIG. 1 in which the configuration of the gas circuit is at "U" and uses a gas collector 13 for the return of the gases to a closed end and a connecting flange 14 at the other open end of the gas inlet and outlet. According to a second embodiment of the exchanger 1 illustrated in FIG.

13, the inlet flanges 1 1 and outlet 12 of the cooling fluid are arranged on the same side of the housing 10 in a configuration of "U". Here, the configuration of the gas circuit is linear and uses a gas manifold 13 for the gas outlet laterally and a connecting flange 14 at the other gas inlet end.

According to another embodiment, the exchanger 1 illustrated in FIG. 14 is a charge air cooler (RAS) of an intake gas supply system for a combustion engine for a motor vehicle or similar. In this type of heat exchanger, the fluid to be cooled is, for example, air, compressed by a turbo compressor and for supplying the engine of the vehicle, and the cooling fluid is in particular a heat transfer liquid.

The housing 10 is constituted in this case by a casing 35 in the shape of "U", corresponding to the two lateral sides and the upper side of the housing 10, and a cover 36 corresponding to the lower side of the housing 10.

Here, the plates have two series of lateral beveled edges 4, the beveled edges of each series being superimposed on each other in the stacking direction of plates, the two series being provided on the same edge of the stack. In a variant, they may be at two opposite lateral edges. The cover 36 has bevelled edges 22 corresponding to the bevelled edges of the faceplate to increase the flow section for the coolant at this level. In this embodiment, the two side collectors 10a, 10b is opposite the two series of beveled side edges 4. They may extend partly on the upper side of the housing 10 so that the inlet flange January 1 can be connected to the side manifold 10b on the upper side of the housing 10. Thus, the inlet flanges 1 1 and output 12 of the cooling fluid are arranged on two successive sides of the housing 10, here the outlet flange 12 on a lateral side of the housing 10 and the inlet flange 1 1 on the upper side of the housing 10.

In this way it is proposed a further positioning freedom of the inlet flanges 1 1 and 12 of the cooling fluid to best adapt to the space requirement in which the exchanger is intended to be mounted.

In FIG. 14, the plates 2 are provided with three transverse central corrugations 8 defining four passes for the cooling fluid. Thus, the cooling fluid that enters via the inlet flange January 1 in the manifold 10b is distributed on the plates 2 through the beveled edges 4 located in front of the collector 10b and then goes through a circuit making it perform four passes defined by the three transverse central corrugations 8 before it leaves the plates by the bevelled edges 4 located opposite the collector 10a and then it leaves the collector 10a via the output flange 12.

In the illustrated example, each plate 2 comprises three transverse central corrugations making it possible to define four passes for the cooling fluid, but it is also possible to have on each plate 2 a greater or smaller number of transverse central corrugations as a function of the positioning of the elements. inlet / outlet flanges of the coolant and the desired number of passes for the coolant. In this embodiment, it may be noted that the longitudinal wall 3 of the plates 2 is actually located along the width of the plate 2. In fact, here, the plates 2 have a larger dimension in the direction orthogonal to the direction of flow of gases than in the direction parallel to it.

As illustrated by the various embodiments, the edge edge edge 4 is located on the lateral sides of the plates 2 and thus on the lateral sides of the stack of plates. It makes it possible to interrupt the borders 20 to allow the cooling fluid to enter / leave the stacked plates. It connects the top of two borders 20 between them and begins at the same height as the bottom 21 of the plate. It is here inclined downwards, that is to say in the direction in which the longitudinal wall extends, to facilitate the entry / exit of the fluid in the bottom 21 of the plate. It may also be curved, directed upwards and / or start with a slight shift in height relative to the bottom 21.

Advantageously, and as shown in the various figures, the plates 2 are identical to each other. They are mounted returned relative to each other alternately. In other words, two adjacent plates are positioned one on the other by rotating 180 degrees about a median axis of the plate 2. According to the embodiments illustrated in FIGS. of the median axis extending in the direction of the length of the plate 2, that is to say parallel to the longitudinal walls 3. On the other hand, as illustrated by FIG. 14, the median axis extends perpendicularly 3. By stacking the plates of the latter way, two adjacent plates forming a volume in which the cooling fluid circulates have their bevelled edges 4 head to tail, that is to say that the bevelled edges 4 of a plate 2 are vis-à-vis beveled edges 4 of the adjacent plate. The inlet and outlet passage section of the cooling fluid between the plates, defined by the beveled edges 4 is thus increased.

In all the embodiments illustrated and as more particularly shown in Figure 2, from bottom to top, a first plate is disposed with its longitudinal wall directed upwards. A second plate, returned in relation to the first is disposed on the first plate, this time with its longitudinal wall directed downwards and extending on the opposite side with respect to the longitudinal wall of the first plate. Thus, the first and second plates define with their longitudinal walls 3 a volume inside which the fluid to be cooled can circulate.

A third plate is disposed on the second but returned relative thereto, that is to say according to the same positioning as the first plate but offset in height relative thereto. The borders 20 of the second and third plates face each other and define a volume in which the cooling fluid circulates and exchanges heat, through the bottom 21 of the second plate, with the fluid to be cooled circulating between the first and the second plate.

The other plates are arranged in the same manner in the stacking direction, to define several circuits for the fluid to be cooled and the coolant, in alternating layer as explained above.

Claims

1. Stacked plate heat exchanger (1) comprising a plurality of stacked plates (2) between which the fluid to be cooled and the cooling fluid circulate in two independent circuits defined by said plates (2), in alternating layers, all or part of said plates (2) having one or more edges defining a circulation channel for the cooling fluid by cooperation with another one of said plates, provided adjacent, characterized in that the one or more edges are configured to allow the cooling fluid to penetrate and / or to leave said channel.

2. Exchanger according to claim 1, wherein said edge or edges comprise a side edge edge (4), defining an inlet and / or an outlet of the cooling fluid communicating with the neighboring cooling fluid layer or layers.

3. Exchanger according to claim 1 or 2, wherein said edge or edges are raised edges, made of material of said plates.

4. Exchanger (1) according to any one of claims 1 to 3, wherein each plate (2) has a longitudinal longitudinal side wall (3), and each pair of plates (2) is mounted with its side walls ( 3) disposed at the longitudinal ends to provide separation and closure of the circuits, said side bevel edge (4) being located in one of the longitudinal ends of the plates for receiving the cooling fluid, so that each pair of plates (2) has in opposite lateral ends an inlet bevel edge (4) and a coolant outlet bevel edge (4).

5. Stacked plate heat exchanger (1) comprising a plurality of stacked plates (2) between which the fluid to be cooled and the cooling fluid circulate between two independent circuits defined by said plates (2), in alternating layers, each plate (2) having a longitudinal side wall of closure (3), and each pair of plates (2) being mounted with its respective lateral walls (3) arranged at the longitudinal ends to ensure the separation and closure of the circuits, characterized in that each plate (2) comprises a lateral bevelled edge (4) in one of its longitudinal ends for receiving the cooling fluid, so that each pair of plates (2) has in opposite lateral ends an inlet bevel edge (4) and an edge bevel (4) of the cooling fluid outlet.

6. Exchanger (1) according to any one of the preceding claims, wherein each plate (2) comprises a plurality of corrugations (5) distributed in a zone for heat exchange.

An exchanger (1) according to any one of the preceding claims, wherein each plate (2) comprises peripheral corrugations (6) designed to maintain the distance along the space separating each pair of plates (2).

8. Exchanger (1) according to any one of the preceding claims, wherein each plate (2) has orifices (7) provided for the insertion of respective securing bars (7a) for immobilizing the set of stacked plates. (2) during its assembly

An exchanger (1) according to any one of the preceding claims, wherein each plate (2) has a transverse central corrugation (8) provided to allow flow of the "U" cooling fluid.

10. Exchanger according to any one of claims 1 to 8, wherein each plate (2) comprises a plurality of central transverse corrugations (8) provided to allow a flow of cooling fluid in at least three passes.

1 1. Exchanger (1) according to any one of claims 4 to 10, wherein each plate (2) has folded wings (9) at both longitudinal ends.

12. Exchanger (1) according to any one of claims 2 to 1 1, wherein said exchanger comprises a housing (10) provided to house all the stacked plates (2) and comprising two side collectors (10a, 10b). mounted facing the lateral beveled edges (4) of the plates (2).

13. Exchanger (1) according to claim 12, wherein the side collectors (10a, 10b) of the housing (10) are connectable together to thereby close said housing (10).

14. Exchanger (1) according to claim 12 or 13, wherein said exchanger comprises an inlet flange (1 1) and an outlet flange (12) of the cooling fluid arranged in the side collectors (10a, 10b) of the housing (10).

15. Exchanger (1) according to claim 14, wherein the inlet flanges.

(1 1) and outlet (12) of the cooling fluid are respectively disposed on opposite side sides of the housing (10).

16. Exchanger (1) according to claim 14, wherein the inlet flanges (1 1) and outlet (12) of the cooling fluid are disposed on the same side of the housing (10).

17. Exchanger (1) according to claim 14, wherein the inlet flanges (1 1) and outlet (12) of the cooling fluid are arranged on two successive sides of the housing (10).

18. Exchanger according to any one of claims 12 to 17 wherein the housing consists of two half-shells shaped "U".

19. Exchanger according to any one of claims 12 to 17 wherein the housing consists of a casing (35) shaped "U" closed by a cover (36).