Heat exchange device comprising at least one collector, air conditioning system and vehicle

Abstract

The invention relates to a heat exchange device comprising: a heat exchange matrix (50) housed in a flow enclosure and formed by a plurality of heat exchange tubes, each tube comprising at least one conduit extending predominantly in a longitudinal direction, each conduit at least partially defining a flow channel for a second heat transfer fluid; at least one collector (20) comprising at least one conduit portion (22, 23, 24) extending predominantly in a plane orthogonal to the longitudinal direction, the collector comprising a plurality of apertures (30); at least one fluid distribution conduit (40) configured to allow the second heat transfer fluid to flow between the at least one orifice of the collector and the at least one conduit, each orifice of the collector being open towards the distribution conduit. The invention relates to an air conditioning system and an aircraft comprising such a heat exchange device.

Description

Technical Field

[0001] The present invention relates to heat exchange equipment, such as heat exchangers for aircraft or even hydraulic cooling systems, the heat exchange equipment including at least one supply and / or outlet collector. Background Technology

[0002] A heat exchanger is used to enable heat transfer between at least two liquid and / or gaseous fluids, particularly to cool or heat one fluid by means of the other. Heat exchangers are used in a variety of applications, such as in cooling systems for electronic equipment, or even in air conditioning systems for aviation, rail, or land transportation vehicles.

[0003] The environmental control system of an aircraft cabin, more commonly known as ECS, is designed to supply air at controlled pressures and / or temperatures to the cabin of an aircraft (generally referring to any internal space of the aircraft in which the pressure and / or temperature of the air must be controlled, such as the passenger cabin, cockpit, cargo hold, etc.).

[0004] Most heat exchangers currently used on aircraft are formed from finned or plate-type heat exchangers. These exchangers are formed from heat exchange chambers of approximately parallelepiped shape and include stacked layers of fins, such as corrugated fins, which form flow channels between two plates and extend in an alternating manner in the vertical direction relative to the other layer. Thus, the heat path supplying one side of the exchanger flows in channels of different layers called hot layers, and the cold path supplying the vertical side of the exchanger flows in transverse channels of layers called cold layers, which are staggered between the two hot layers. This architecture allows each hot layer to be staggered between two cold layers along the entire length of the exchanger, and thus ensures heat exchange between the two fluids.

[0005] These heat exchangers allow for the cooling of air drawn in from the engine or ambient air compressed by a dedicated compressor before it is processed by other equipment in the air conditioning system, thus enabling its supply to the aircraft cabin. The cooling capacity of the exchanger is proportional to its size.

[0006] However, the size and mass of the heat exchanger are two crucial features for aircraft manufacturers seeking to achieve excellent cooling performance, just as in other applications.

[0007] As an alternative to a heat exchanger with a plate integrated into an atmospheric vehicle, WO 2020 / 109707 proposes a heat exchanger that allows for an increase in the exchange surface within the exchanger while maximizing the size of the exchanger by means of a matrix formed by heat exchange tubes housed in a fluid flow chamber, each tube comprising at least an inner conduit and an outer conduit, the inner conduit being nested within the outer conduit.

[0008] The inventors noted that there is no suitable supply and / or outlet collector for such a matrix formed of tubes of satisfactory size and mass.

[0009] US 2018 / 0345425 describes a heat exchanger comprising multiple heat exchange rows extending through a chamber of the heat exchanger, each row comprising multiple heat exchanger tubes. A collector enables fluid communication between adjacent heat exchange rows in the form of connection ports. A distributor is provided in an inlet pressure chamber and an outlet pressure chamber.

[0010] Therefore, the present invention aims to provide a heat exchange device that makes it possible to propose solutions suitable for the distribution of each fluid input into and / or output from a heat exchanger comprising such tubes. Summary of the Invention

[0011] Purpose of the invention The present invention aims to provide a heat exchange device with an excellent level of efficiency in fluid distribution.

[0012] The present invention is particularly intended to provide an extremely compact heat exchange device, especially a heat exchange device with limited size and mass.

[0013] The present invention also aims to provide a heat exchange device with an excellent level of efficiency.

[0014] Description of the invention To achieve this objective, the present invention relates to a heat exchange apparatus comprising: - A flow housing, including a first inlet and a first outlet, wherein the first inlet is for a first heat transfer fluid to flow into the flow housing, and the first outlet is for the first heat transfer fluid to flow out of the flow housing. A heat exchange matrix, housed within the flow housing and formed by a plurality of heat exchange tubes, each heat exchange tube comprising at least one conduit and extending primarily in the longitudinal direction between two opposing ends, each conduit at least partially defining a flow path for a second heat transfer fluid. - A second inlet for the second heat transfer fluid to flow into the flow casing. - A second outlet for the second heat transfer fluid to flow out of the flow casing. The heat exchange device is characterized in that it further includes: - At least one collector, including at least one conduit portion, and including one of a second inlet and a second outlet for the second heat transfer fluid, the collector extending not parallel to the longitudinal direction of each heat exchange tube, the collector including a plurality of orifices, each collector being configured to allow the second heat transfer fluid to flow between the second inlet and the second outlet for the second heat transfer fluid and the orifice. - At least one fluid distribution conduit is configured to allow the second heat transfer fluid to flow between at least one orifice of the collector and at least two heat exchange tubes, each orifice of the collector opening toward the distribution conduit, and at least one longitudinal end of each heat exchange tube being connected to the distribution conduit.

[0015] Therefore, the heat exchange device according to the invention makes it possible to obtain a collected solution, which is input into and / or output from a heat exchange matrix that is as compact as possible. This results in a reduction in the size of the heat exchange device. For example, this thus enables several configurations for integration into an air conditioning system.

[0016] Therefore, on one hand, each collector is connected to one of the second inlet and the second outlet for the second heat transfer fluid, as well as the orifice; on the other hand, each fluid distribution pipe connects the collector to the at least two heat exchange tubes of the heat exchange matrix. Thus, advantageously and according to the invention, the at least one collector is fluidly connected to one of the second inlet and the second outlet for the second heat transfer fluid, as well as the at least one distribution pipe. When considering the flow of the second fluid, each collector is thus positioned between the second inlet or the second outlet for the second heat transfer fluid and the at least one distribution pipe for the second fluid, allowing the second fluid to flow within each collector and each distribution pipe.

[0017] The advantage of the collector is that it allows the second fluid to enter and / or exit laterally relative to the heat exchange matrix, rather than along the longitudinal extension of the heat exchange matrix. The collector, and therefore each conduit portion of the collector, does not extend parallel to the longitudinal direction of each heat exchange tube (and extends without being merged). The collector may extend substantially in a plane orthogonal to the longitudinal direction, or even in a manner not strictly contained within the plane, having a generally curved shape, and extending substantially primarily in a plane forming a non-zero angle with the plane orthogonal to the longitudinal direction of each heat exchange tube, for example, a non-zero angle less than 30°. Advantageously, and according to the invention, the collector extends substantially primarily in a plane orthogonal to the longitudinal direction of each heat exchange tube.

[0018] Advantageously, and according to the invention, the heat exchange device according to the invention comprises: - A first passage, referred to as a passage for a first heat transfer fluid, allows the first heat transfer fluid to flow between a first inlet and a first outlet within the flow housing. - The second passage, referred to as the passage for the second heat transfer fluid, enables the second heat transfer fluid to flow between the second inlet and the second outlet within the flow casing.

[0019] According to the invention, the collector assembly includes one or more conduit and distribution pipe sections, such that fluid can flow from the conduit sections of the collector to each conduit of the heat exchange matrix (or conversely, in the case of an outlet collector, from each conduit of the heat exchange matrix via the distribution pipe to the orifice of the collector). Therefore, advantageously and according to the invention, each conduit section of the collector extends to at least partially surround the heat exchange matrix. Each conduit section of the collector can have various shapes, and each conduit section of the collector can have a variable cross-section, particularly a cross-section that gradually decreases from the fluid inlet to the interior of the collector.

[0020] Advantageously, and according to the invention, the heat exchange matrix has a polygonal cross-section. Advantageously, and according to the invention, the cross-section of the heat exchange matrix is ​​quadrilateral.

[0021] In a particularly advantageous variant of the heat exchange device according to the invention, the collector extends toward at least three main faces of the heat exchange matrix. Advantageously, and according to the invention, the collector extends to surround three of the four main faces of the heat exchange matrix without interruption.

[0022] Advantageously, and according to the invention, each collector is generally U-shaped, or even C-shaped. In particular, advantageously, and according to the invention, each free end of the U-shaped arm extends to the edge of the main surface of the heat exchange matrix.

[0023] Therefore, the U-shaped collector consists of three parts connected to each other by two bends. Advantageously, and according to the invention, the collector includes a central conduit portion extending in a main direction between a first end and a second end, a first end of the main conduit portion extending from a first transverse conduit portion, and a second end of the main conduit portion extending from a second transverse conduit portion, the first transverse conduit portion and the second transverse conduit portion each extending in a direction substantially orthogonal to the main direction of the central conduit portion.

[0024] Advantageously, and according to the invention, each central conduit portion of the collector includes one of a second inlet for the second heat transfer fluid and a second outlet for the second heat transfer fluid. In a particularly advantageous variant of the heat exchange device according to the invention, the central conduit portion of the collector includes a second inlet for the second heat transfer fluid.

[0025] The orifice of the collector opening toward the outlet pipe can be provided in any conduit portion of the collector. Advantageously, and according to the invention, the plurality of orifices of each collector are provided in the first transverse conduit and the second transverse conduit, while the central conduit portion of the collector does not have an orifice.

[0026] For example, even when the heat exchange matrix is ​​in the form of a rotating cylinder (the cross section of the heat exchange matrix is ​​therefore circular), nothing prevents the orifices from being distributed in an arc shape throughout the entire single conduit section.

[0027] Advantageously, and according to the invention, the collector extends to continuously surround at least two-thirds, particularly at least half (50%), or even at least 70% of the circumference of the heat exchange matrix (measured on a plane orthogonal to the longitudinal direction of each heat exchange tube of the heat exchange matrix).

[0028] Since the collector extends at least partially around the heat exchange matrix, each distribution conduit can be specified to connect to the collector at two different points. Therefore, in an advantageous embodiment according to the invention, the heat exchange device includes a plurality of fluid distribution conduits, each extending between at least one orifice of the first transverse conduit of the collector and at least one orifice of the second transverse conduit of the collector.

[0029] Advantageously, and according to the invention, each fluid distribution conduit extends primarily along a direction orthogonal to the longitudinal direction of each heat exchange tube in the heat exchange matrix. In particular, the distribution conduits extend parallel to each other. Similarly, in particular, the distribution conduits extend primarily in the same plane orthogonal to the longitudinal direction of each heat exchange tube.

[0030] Advantageously, and according to the invention, each heat exchange tube comprises at least one inner conduit and at least one outer conduit, the inner conduit being nested within the outer conduit to define: - A flow channel for the fluid, referred to as an internal channel, is defined by the internal conduit and is adapted to be supplied with the heat transfer fluid. - A flow channel for the fluid, referred to as an intermediate channel, is defined by the inter-conduit space between the inner conduit and the outer conduit, and is adapted to be supplied with the second heat transfer fluid.

[0031] Advantageously, and according to the invention, the heat exchange matrix is ​​adapted to enable the first heat transfer fluid flow to flow in the flow housing in a direction between the first inlet and the first outlet, the direction between the first inlet and the first outlet being referred to as the main flow direction of the first fluid.

[0032] The heat exchange device according to the invention can be a counter-current or even a co-current (or parallel flow) device. Advantageously, and according to the invention, the paths of the first and second heat transfer fluid flows within the flow housing can each be substantially straight. According to a particularly advantageous embodiment of the invention, the heat exchange device is a counter-current device. The heat exchange device according to the invention is adapted to enable the second heat transfer fluid to flow in a path for the second heat transfer fluid in a direction substantially parallel to the main flow direction of the first fluid, which is referred to as the flow direction of the second fluid.

[0033] Of course, a heat exchange device (referred to as a multi-path exchanger) can also be provided, in which the flow of one and / or the other of the first or second heat transfer fluid follows a U-shaped or even S-shaped path within the heat exchange matrix.

[0034] Advantageously, and according to the invention, the flow housing has a closed perimeter that is sealed relative to the heat transfer fluids (at least during operation and without regard to the inlets and outlets for the first and second heat transfer fluids).

[0035] Advantageously, and according to the invention, each heat transfer fluid can be in a liquid or gaseous state. In particular, the state of the first heat transfer fluid can be the same as or different from the state of the second heat transfer fluid. Advantageously, and according to the invention, the heat exchange device is configured such that the first and second heat transfer fluids are in a gaseous state. Alternatively, advantageously, and according to the invention, the heat exchange device is configured such that the first heat transfer fluid is in a gaseous state and the second heat transfer fluid is in a liquid state.

[0036] The second heat transfer fluid can correspond to a fluid at a temperature higher than that of the first heat transfer fluid, or vice versa. Therefore, advantageously and according to the invention, the second heat transfer fluid corresponds to a heat transfer fluid at a temperature higher than that of the first heat transfer fluid. In other words, the first heat transfer fluid can be referred to as a "cold" fluid, and the second heat transfer fluid can be referred to as a "hot" fluid.

[0037] Advantageously, and according to the invention, the heat exchange device includes a first collector and a second collector, the first collector being referred to as an inlet collector and the second collector as an outlet collector. Advantageously, and according to the invention, the inlet collector includes an inlet opening that forms a second inlet for the second heat transfer fluid to flow into the flow housing. Advantageously, and according to the invention, the outlet collector includes an outlet opening that forms a second outlet for the second heat transfer fluid to flow out of the flow housing.

[0038] The heat exchange device according to the invention can be formed from at least one material selected from metallic materials, composite materials, polymer materials, ceramic materials, and in particular graphite, glass, etc. In particular, in a particularly advantageous embodiment of the heat exchange device according to the invention, the conduits of the heat exchange matrix are formed from metallic materials, particularly from at least one material selected from the group consisting of steel, copper, aluminum, metal alloys (especially superalloys) and mixtures thereof.

[0039] This invention relates to air conditioning systems, which include at least one heat exchange device according to the invention. The air conditioning system may, in particular, be a non-contact countercurrent exchanger.

[0040] The present invention relates to vehicles, particularly aircraft, which include at least one air conditioning system according to the present invention.

[0041] The present invention also relates to heat exchange equipment, air conditioning systems, and vehicles including at least one such air conditioning system, characterized by a combination of all or some of the features mentioned above or below. Attached Figure Description

[0042] Other objects, features, and advantages of the invention will become apparent upon reading the following description, which is set forth in a non-limiting manner only and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic perspective view of a heat exchange device according to the present invention. Figure 2 This is a schematic perspective view of a portion of a heat exchange device according to the present invention, wherein the portion of the heat exchange device is a cross-sectional view. Figure 3 This is a schematic cross-sectional view of a portion of the collector and a portion of the distribution pipe of the heat exchange device according to the present invention. Detailed Implementation

[0043] For illustrative and clarity purposes, dimensions and proportions are not strictly adhered to in the drawing.

[0044] Furthermore, in all figures, consistent, similar, or analogous elements are represented by the same reference numerals.

[0045] Figure 1 and Figure 2 A heat exchange device according to a first embodiment of the present invention is illustrated schematically.

[0046] This heat exchange device includes a flow housing (not shown). The heat exchange device includes a first inlet 2, a first outlet 4, a second inlet 6, and a second outlet 8. The first inlet 2 and the first outlet 4 are for a first heat transfer fluid in the flow housing, and the second inlet 6 and the second outlet 8 are for a second heat transfer fluid in the flow housing.

[0047] The heat exchange device includes a heat exchange matrix 50 housed within a fluid housing and formed by a plurality of heat exchange tubes. Each heat exchange tube includes at least one conduit extending longitudinally primarily between two opposing ends. Each conduit at least partially defines a flow path for a second heat transfer fluid.

[0048] Therefore, the heat exchange matrix 50 allows the first heat transfer fluid and the second heat transfer fluid to flow in and through the flow shell, and to transfer calories between the first heat transfer fluid and the second heat transfer fluid.

[0049] A first heat transfer fluid, referred to as "cold" fluid, flows in the flow region of the first heat transfer fluid between the first inlet 2 and the first outlet 4, along the main flow direction of the first fluid. A second heat transfer fluid, referred to as "hot" fluid, flows in the flow region of the second heat transfer fluid between the second inlet and the second outlet, and the flow region of the second heat transfer fluid is different from that of the first heat transfer fluid.

[0050] The heat exchange matrix 50 has a generally shaped form with four main faces, which are substantially parallel to the longitudinal direction. In the illustrated embodiment, the heat exchange matrix has a generally flat shape (the heat exchange matrix is ​​contained within the flat plate). Therefore, the cross-section of the heat exchange matrix 50 is rectangular, and each collector 20 extends around the heat exchange matrix 50 to surround three sides of the rectangle. In the illustrated embodiment, each collector 20 is generally U-shaped. Nothing prevents the provision of heat exchange matrices with substantially different shapes, particularly heat exchange matrices with more complex shapes, heat exchange matrices with curved outer surfaces, and / or even depending on the available space in which the heat exchange tubes will be integrated, having a cross-section close to an L-shape or even a D-shape (relative to the longitudinal direction in which the heat exchange tubes extend). Moreover, the heat exchanger has the advantage of allowing for several shapes, thus collectors and distribution pipes can be adapted to the heat exchanger.

[0051] exist Figures 1 to 3 In the embodiment shown, each heat exchange tube includes an inner conduit 53, an outer conduit 52, and an intermediate channel. The inner conduit 53 is nested inside the outer conduit 52 to define an inner channel defined by the inner conduit. The inner channel is adapted to be supplied with the first heat transfer fluid. The intermediate channel is defined by an interconduit space between the inner conduit 53 and the outer conduit 52. The intermediate channel is adapted to be supplied with a second heat transfer fluid.

[0052] The heat exchange device includes a fluid collector 20. The collector 20 includes a second inlet 6 for a second heat transfer fluid. Each collector 20 extends substantially primarily in a plane orthogonal to the longitudinal direction and at least partially surrounds three of the four principal faces of the heat exchange matrix 50. Each collector 20 includes a plurality of orifices 30 that allow fluid to pass through. In the illustrated embodiment, each orifice 30 has a rectangular shape.

[0053] Each collector 20 includes a central conduit portion 22, a first transverse conduit portion 23, and a second transverse conduit portion 24, the central conduit portion 22 extending in a main direction between a first end 27 and a second end 28. The first transverse conduit portion 23 and the second transverse conduit portion 24 each extend in a direction substantially orthogonal to the main direction of the central conduit portion 22. Thus, the collector extends from the first distal end 25 to the second distal end 26 in a U-shape, with the first transverse conduit portion 23 extending to the distal end 25 and the second transverse conduit portion 24 extending to the distal end 26. Therefore, the collector 20 allows a second heat transfer fluid to be distributed around the heat exchange matrix while having a minimal size and not obstructing the flow of the first heat transfer fluid, which enters through the space left around the conduit 52 and through the opening 46 inside the inner conduit 53. Each conduit portion 22, 23, 24 of the collector 20 may have a variable cross-section and a different shape. Each conduit section 22, 23, 24 of the collector may have a transverse cross-section with a variable surface area between the second inlets 6 for the second heat transfer fluid or between the longitudinal ends of each conduit section 22, 23, 24 of the collector. Figure 1 and Figure 2 As shown, this is the case in the illustrated embodiment. Specifically, the lateral cross-section of the first transverse conduit portion 23 gradually decreases between the first end 27 and the distal end 25 of the central conduit portion 22. Similarly, the lateral cross-section of the second transverse conduit portion 24 also gradually decreases between the second end 28 and the distal end 26 of the central conduit portion 22. On the other hand, in the illustrated embodiment, each conduit portion 22, 23, 24 of the collector 20 has a substantially rectangular and / or substantially rectangular lateral cross-section.

[0054] However, nothing prevents the collector and each conduit section of the collector from extending in some manner other than strictly orthogonal to the longitudinal direction of each heat exchange tube. The collector can extend substantially on a plane forming a non-zero angle, for example, a non-zero angle less than 30°, the plane having an orthogonal angle to the longitudinal direction of each heat exchange tube. This allows for adaptation to a variety of desired shapes, and is particularly suitable for space constraints to optimize the occupied space. In any case, an advantage of each collector is that it can be configured to allow lateral entry and / or exit of a second fluid, and therefore not within the longitudinal extension of the heat exchange matrix.

[0055] The heat exchange device includes a plurality of fluid distribution conduits 40 configured to allow a second heat transfer fluid to flow between at least one orifice 30 of a collector 20 and at least one conduit 52 of a plurality of heat exchange tubes. Each orifice 30 of the collector opens toward a distribution conduit 40. In the illustrated embodiment, each fluid distribution conduit 40 extends between an orifice 30 of a first transverse conduit portion 23 of the collector and an orifice of a second transverse conduit portion 24 of the collector. The central conduit portion 22 of the collector does not have an orifice 30; in this case, orifices are provided only in the first transverse conduit 23 and the second transverse conduit 24 of the collector 20. Figure 2 As shown, a portion of the distribution conduit 40 visible in the first plane of the heat exchange matrix 50 is shown in partial cross-section, where the wall of the conduit 52 has been removed for illustrative purposes. Similarly, in Figure 2 In the diagram, a portion of the tube is shown in longitudinal section to allow the internal and intermediate channels of the outer conduit 52 and the inner conduit 53 to be visible. Thus, each heat exchange tube has a longitudinal end that is connected to a distribution conduit 40. The distribution conduits 40 extend parallel to each other and in the same plane orthogonal to the longitudinal direction of each heat exchange tube.

[0056] Figure 3 A schematic cross-sectional view of a portion of the collector 20 and a portion of the two distribution pipes 40 of the heat exchange device is shown. More precisely, in Figure 3 The details shown depict a portion of the first transverse conduit 23 and the central conduit portion 22 of the collector 20. Two orifices 30 can be seen provided within the first transverse conduit portion 23, each orifice connected to a dispensing conduit 40. Each dispensing conduit 40 includes a channel 42 connected to a plurality of conduits 52. Each dispensing conduit 40 has an opening 44, the size of which is substantially the same as that of each orifice 30 of the collector, and the opening 44 is positioned facing each orifice 30 of the collector. Figure 3 A reinforcing member 70 is also shown, which increases the rigidity of the distribution pipes 40. In the illustrated embodiment, all the distribution pipes 40 of the heat exchange device are formed as a single piece, for example by 3D printing (or additive manufacturing) or even by molding.

[0057] In the illustrated embodiment, at the outlet (in Figure 1 and Figure 2At the lower portion of the heat exchange matrix 50, the second heat transfer fluid exits from all conduits 52 via a central arm, which includes a second outlet 8. However, nothing prevents the provision of an outlet collector consistent with the inlet collector 20 at the outlet. Nor does anything prevent the second outlet from being substantially located in the center of the heat exchange matrix 50, but rather offset at a greater or smaller angle towards the edge of the heat exchange matrix 50 depending on the desired configuration.

[0058] like Figure 1 and Figure 2 As shown, the second outlet 8 is not located on the same side of the heat exchange matrix as the second inlet 6, but is completely opposite to the second inlet 6 (in the absence of being located on the same plane). This facilitates the distribution and dispersion of the second heat transfer fluid in all the heat exchange tubes of the heat exchange matrix 50. Therefore, in the illustrated embodiment, the fluid inlet 6 of the collector 20 and the second outlet 8 of the central arm are configured to be located on two different and parallel faces of the four main faces of the heat exchange matrix, the two different and parallel faces being substantially parallel in the longitudinal direction.

[0059] In addition, each collector 20 can be connected to an inlet or evacuation conduit for either a first or a second heat transfer fluid.

[0060] Therefore, the heat exchange device according to the invention effectively enables the efficient distribution of fluid within a heat exchange matrix 50 that includes conduits and has a small size. The construction of each collector 20 of the heat exchange device according to the invention allows for diverse configurations for integration into air conditioning systems.

[0061] The invention is not limited to the described embodiments. In particular, nothing prevents the provision of non-linear conduits, or even non-cylindrical and non-concentric internal and external conduits. Furthermore, the invention is not limited to heat exchangers intended for use in air conditioning systems, but is also advantageously suited for heat exchangers intended for all types of heat exchange applications, such as fluid cooling systems.

[0062] It is also possible to specify that two heat exchange devices (or more heat exchange devices according to the invention) are placed side by side, and the transverse conduit portion of the collector can be shared by the two side by side collectors. The transverse conduit portion has an orifice opening, which faces the first heat exchange matrix on one hand and the second heat exchange matrix on the other hand.

Claims

1. Heat exchange device comprising: - a flow casing comprising a first inlet (20) for a first heat transfer fluid to flow into the flow casing and a first outlet (4) for the first heat transfer fluid to flow out of the flow casing, - a heat exchange matrix (50) housed in the flow casing and formed by a plurality of heat exchange tubes, each heat exchange tube comprising at least one duct (52) and extending mainly in a longitudinal direction between two mutually opposite ends, each duct at least partially defining a flow passage for a second heat transfer fluid, - a second inlet (6) for the second heat transfer fluid to flow into the flow casing, - a second outlet (8) for the second heat transfer fluid to flow out of the flow casing, characterized in that it further comprises: - at least one collector (20) comprising at least one duct portion and comprising one of the second inlet for the second heat transfer fluid and the second outlet for the second heat transfer fluid, the collector not extending parallel to the longitudinal direction of each heat exchange tube of the heat exchange matrix, the collector comprising a plurality of apertures (30), each collector being configured to enable the second heat transfer fluid to flow between one of the second inlet for the second heat transfer fluid and the second outlet for the second heat transfer fluid and the apertures (30), - at least one fluid distribution duct (40) configured to enable the second heat transfer fluid to flow between at least one aperture (30) of the collector and at least two heat exchange tubes, each aperture (30) of the collector (20) opening towards a distribution duct (40) and at least one longitudinal end of each heat exchange tube being connected to the distribution duct.

2. The apparatus of claim 1, wherein, Each duct portion of the collector (20) extends to at least partially surround the heat exchange matrix.

3. The apparatus of claim 1 or 2, wherein, The collector extends substantially mainly in a plane orthogonal to the longitudinal direction of each heat exchange tube.

4. The apparatus of any one of claims 1 to 3, wherein, Each collector (20) is substantially U-shaped.

5. The apparatus of any one of claims 1 to 4, wherein, Each collector (20) comprises a central duct portion (22) extending in a main direction between a first end (27) and a second end (28), the first end of the main duct portion (22) being extended by a first transverse duct portion (23) and the second end (28) of the main duct portion (22) being extended by a second transverse duct portion (24), the first and second transverse duct portions (23, 24) each extending in a direction substantially orthogonal to the main direction of the central duct portion (22).

6. The apparatus of claim 5, wherein, The central duct portion (22) of the collector (20) comprises the second inlet (6) for the second heat transfer fluid.

7. The apparatus of claim 5 or 6, wherein, The plurality of apertures (30) of each collector are provided in the first and second transverse ducts (23, 24), the central duct portion (22) of the collector not having apertures (30).

8. The apparatus of any one of claims 5 to 7, wherein, The heat exchange device comprises a plurality of fluid distribution ducts (40), each fluid distribution duct (40) extending between at least one aperture (30) of the first transverse conduit (23) of the collector and at least one aperture (30) of the second transverse conduit (24) of the collector.

9. The apparatus of any one of claims 1 to 8, wherein, Each fluid distribution duct (40) extends mainly in a direction orthogonal to the longitudinal direction of each heat exchange tube of the heat exchange matrix.

10. The apparatus of any one of claims 1 to 9, wherein, Each heat exchange tube comprises at least one inner conduit and at least one outer conduit, the inner conduit being nested in the outer conduit to define: - a flow passage for a fluid, called inner passage (53), said inner passage being defined by the inner conduit and being adapted to be able to be supplied with a heat transfer fluid, - a flow passage for a fluid, called intermediate passage, said intermediate passage being defined by the inter-conduit space between the inner conduit and the outer conduit and being adapted to be able to be supplied with the second heat transfer fluid.

11. An air conditioning system characterized by, The air conditioning system comprises at least one heat exchange device according to any one of claims 1 to 10.

12. Vehicle, in particular aircraft, characterized in that The vehicle comprises at least one air conditioning system according to claim 11. The heat exchange device comprises a plurality of fluid distribution ducts (40), each fluid distribution duct (40) extending between at least one aperture (30) of the first transverse conduit (23) of the collector and at least one aperture (30) of the second transverse conduit (24) of the collector. Each fluid distribution duct (40) extends mainly in a direction orthogonal to the longitudinal direction of each heat exchange tube of the heat exchange matrix. Each heat exchange tube comprises at least one inner conduit and at least one outer conduit, the inner conduit being nested in the outer conduit to define: - a flow passage for a fluid, called inner passage (53), said inner passage being defined by the inner conduit and being adapted to be able to be supplied with a heat transfer fluid, - a flow passage for a fluid, called intermediate passage, said intermediate passage being defined by the inter-conduit space between the inner conduit and the outer conduit and being adapted to be able to be supplied with the second heat transfer fluid. The air conditioning system comprises at least one heat exchange device according to any one of claims 1 to 10. The vehicle comprises at least one air conditioning system according to claim 11.

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