Heat exchanger, cooling system and manufacturing method comprising a plurality of fluid circulation plates each comprising at least two different portions

Abstract

The present invention relates to a heat exchanger comprising a plurality of circulation plates (14) for a first fluid, the plurality of circulation plates comprising: - a plurality of conduits (18) configured to allow circulation of the first fluid between a first inlet (35) and a first outlet (36), - at least one first portion (15, 17) extending mainly along a plane having a non-zero inclination (25) with respect to a main plane, a second portion (16) extending along the main plane, the circulation plates (14) for the first fluid being configured so that the first portion (15, 17) and the second portion (16) of a first circulation plate (14) are respectively arranged substantially parallel to the first portion (15, 17) and the second portion (16) of a second circulation plate (14), each space between two circulation plates (14) defining a circulation layer for a second fluid.

Description

Technical Field

[0001] This invention relates to heat exchangers that can be used in air cooling systems, such as in aviation, rail, or ground transportation vehicles. In particular, this invention relates to heat exchangers comprising multiple circulation plates for a first fluid. Background Technology

[0002] A heat exchanger is used to allow heat transfer between at least two fluids, particularly for cooling or heating one fluid with another. Heat exchangers are used in many contexts, especially in air cooling systems for aviation, rail, or ground transportation vehicles. Air cooling systems can be used to cool fluid flows that are in a liquid or gaseous state (referred to as hot fluids).

[0003] In a cooling configuration, the cold airflow in the cold circuit can be supplied, for example, by an airflow drawn from the bypass flow of the aircraft's engines, known as fan air, which has a temperature close to the aircraft's external environment. The cold circuit can also be supplied by an airflow drawn from the aircraft's air intakes, which supply air ducts, more commonly known as RAM air.

[0004] In aviation, the aim is generally to limit the mass and volume of all components. Therefore, in some cases, it is useful to install heat exchangers within spaces constrained by generally curved shapes, which is especially true in aircraft cabins.

[0005] For example, EP3364142 discloses a curved heat exchanger formed of several segments assembled together by means of several closure rods, the ends of which extend along a non-parallel plane.

[0006] Document US2012 / 0227944 also discloses a heat exchanger for use in a computed tomography system, which is formed of multiple tubes bent at different locations to form several straight segments with open ends. A flow path for a first heat exchange fluid extends inside the tubes. The tubes are attached to a pair of plates that hold the tubes in an array spaced apart, thereby allowing a second heat exchange fluid to circulate between the flat outer surfaces of the tubes.

[0007] Document US2003 / 0234098 also discloses an air conditioning module including a heat exchanger comprising: a first component, a second component inclined relative to the first component; a manifold; and a plurality of fins and tubes extending between the manifolds. Inlet and outlet orifices are arranged on one or more of the manifolds to allow liquid to be transferred between the manifolds through the tubes.

[0008] However, such heat exchangers exhibit suboptimal heat exchange performance and relatively high pressure loss, and also impose constraints during manufacturing. Summary of the Invention

[0009] Purpose of the invention The present invention aims to provide a heat exchanger that overcomes these disadvantages.

[0010] The present invention also aims to provide a heat exchanger that exhibits excellent efficiency while having a limited mass.

[0011] The present invention also aims to provide, in at least one embodiment, a heat exchanger configured to be installed in a confined space in an aircraft, rail or ground vehicle.

[0012] The present invention also aims to provide, in at least one embodiment, a method for manufacturing such a heat exchanger, which is easy to implement and requires only a few different components.

[0013] Disclosure of the invention Therefore, the present invention relates to a heat exchanger comprising: - A flow housing, including a first inlet and a first outlet, wherein the first inlet is for a first fluid to flow into the flow housing, and the first outlet is for the first fluid to flow out of the flow housing. - A second inlet and a second outlet, the second inlet being for the second fluid to flow into the flow housing, and the second outlet being for the second fluid to flow out of the flow housing. The heat exchanger is characterized in that it includes a plurality of circulation plates for a first fluid, each circulation plate for the first fluid comprising: - Multiple conduits are configured to allow a first fluid to circulate between a first inlet and a first outlet. - At least one first portion and at least one second portion, the first portion extending primarily along a plane having a non-zero inclination relative to the principal plane, the second portion extending along the principal plane, and The circulation plate for the first fluid is configured such that a first portion of the first circulation plate is arranged substantially parallel to a first portion of the second circulation plate, and is configured such that a second portion of the first circulation plate is arranged substantially parallel to a second portion of the second circulation plate, with each space between the two circulation plates defining a circulation layer for the second fluid.

[0014] The exchanger also includes a sealing bar for each circulation layer of the second fluid, with at least one sealing bar disposed between two circulation plates of the first fluid, and at least one sealing bar disposed between a first portion of the first circulation plate and a first portion of the second circulation plate. The closing bars that contact at least one first portion of the circulation plate of the exchanger are offset from each other in a direction parallel to the main plane, the first portion of the circulation plate of the first fluid extending along the main plane such that the length of the passage within each circulation plate of the first fluid is substantially uniform, wherein the first fluid circulates within the passage within each circulation plate.

[0015] Therefore, the heat exchanger according to the invention, including such a circulation plate, can have a generally curved or arched overall shape to conform to the curvature of the space allocated to the heat exchanger in, for example, the cabin of an aircraft or any other confined space with a non-planar (or substantially non-parallelogram) shape. The circulation plate integrates at least two parts, at least two parts inclined relative to each other, as if each plate had been partially bent. Thus, the heat exchanger according to the invention, including such a circulation plate, also makes it possible to provide a one-piece heat exchanger, i.e., a one-piece heat exchanger formed from a single piece, rather than from several segments assembled together at different inclinations. The structure of the heat exchanger according to the invention also allows for a substantially uniform length of the passage within each circulation plate of the first fluid in the same heat exchanger, wherein the first fluid circulates within the passage in each circulation plate. The uniform plate can be used for all different layers of the same heat exchanger without requiring any specific adjustments related to the inclination of the different portions of the circulation plate of the first fluid relative to each other. Therefore, the construction of the circulation plate integrating the circulation conduit for the first fluid also makes it possible to provide circulation layers for the second fluid, the circulation layers for the second fluid being substantially uniform with each other. This also allows for improved cooling performance of heat exchangers and limits pressure loss.

[0016] In other words, the closing rods that contact at least one first portion of the circulation plate of the exchanger are offset from each other along a direction parallel to the main plane, and the first portion of the circulation plate of the first fluid extends along the main plane such that the length of the first portion of the first circulation plate is substantially the same as the length of the first portion of the second circulation plate (the length of each portion is the dimension extending parallel to the main circulation direction of the first fluid within that portion of each circulation plate). Therefore, the first fluid and the second fluid can each have substantially the same circulation path in each layer, which provides numerous advantages.

[0017] Therefore, the circulation plates for the first fluid are arranged without contacting each other, and two adjacent plates provide free space to allow the second fluid to flow. Thus, the circulation plates for the first fluid are arranged to allow alternation between circulation layers for the first fluid and circulation layers for the second fluid. This is also referred to as the alternation of so-called "hot" layers and so-called "cold" layers.

[0018] Each conduit of the circulation plate for the first fluid defines a circulation channel for the first fluid at least partially within the circulation plate. Each conduit of the circulation plate for the first fluid extends within each portion of the circulation plate. Therefore, advantageously and according to the invention, each conduit of the circulation plate for the first fluid extends at least within a first portion of the circulation plate and at least within a second portion of the circulation plate. Advantageously and according to the invention, each circulation plate for the first fluid includes a plurality of conduits configured to allow circulation of the first fluid between a first inlet and a first outlet, said conduits extending substantially parallel to each other within the first and second portions of the circulation plate. Therefore, advantageously and according to the invention, said conduits extend substantially parallel to each other within each portion of the circulation plate for the first fluid. Furthermore, each conduit of the circulation plate for the first fluid can have a cross-sectional shape of various geometries, particularly a square, circular, or rectangular cross-section.

[0019] Advantageously, and according to the invention, each circulation plate for the first fluid is formed from a single piece, i.e., formed from a single piece of an integrated conduit.

[0020] Each circulation plate may include multiple sections, which are inclined relative to each other. Advantageously, and according to the invention, each circulation plate for the first fluid also includes a third section. Advantageously, and according to the invention, each circulation plate also includes a third section extending primarily along a plane having a non-zero inclination relative to the main plane, the second section extending along the main plane, the second section connecting the first section and the third section. Therefore, each circulation plate may include more than three sections, for example four or even five sections… Advantageously, and according to the invention, the inclination is at least equal to 10°. Advantageously, and according to the invention, the inclination is between 15° and 50°.

[0021] Therefore, advantageously and according to the invention, the heat exchanger further includes a sealing bar for each circulation layer of the second fluid, and at least one sealing bar is arranged between the two circulation plates of the first fluid.

[0022] Advantageously, and according to the invention, at least one closing rod is arranged between the first portion of the first circulation plate and the first portion of the second circulation plate.

[0023] Advantageously, and according to the invention, the closing bars that contact at least one first portion of the circulation plate of the exchanger are offset from each other in a direction parallel to the main plane, and the first portion of the circulation plate of the first fluid extends along the main plane.

[0024] Advantageously, and according to the invention, each circulation plate of the heat exchanger according to the invention for the first fluid is adapted to allow the flow of fluid in either liquid or gaseous state.

[0025] Advantageously, and according to the invention, each circulation layer of the heat exchanger according to the invention for the second fluid is adapted to allow the flow of the gaseous fluid.

[0026] For example, the first fluid can represent the fluid to be cooled ("hot" air), and the second fluid can represent a fluid with a temperature lower than that of the first fluid (so-called "cold" or "cooling" air) (in the case of a cooler, the temperature of the first fluid is higher than that of the second fluid). Of course, the reverse is also possible; for example, in the case of operation as an evaporator, the first fluid would represent the liquid to be evaporated by heat exchange with a second fluid at a temperature higher than that of the first fluid.

[0027] On the other hand, flow guides (or fins) can be arranged in each circulation layer for the second fluid. Advantageously, and according to the invention, each circulation layer for the second fluid includes at least one flow guide, which has a corrugated shape. Such flow guides can take various forms and, for example, are presented as corrugated sheets, corrugated strips, or zigzag fins. Advantageously, and according to the invention, each flow guide in the circulation layer for the second fluid is arranged to contact at least one circulation plate for the first fluid.

[0028] The circulation of each of the first and second fluids can take different forms, including those referred to as cross-flow or counter-flow (single-pass or multi-pass). The heat exchanger according to the invention can be configured to allow a single-pass or U-shaped loop for the first fluid. The second fluid of the heat exchanger according to the invention can be configured according to a single-pass, U-shaped, Z-shaped loop, or any more complex loop.

[0029] Advantageously, and according to the invention, the conduits for each circulation plate of the first fluid are configured to allow the first fluid to circulate between a first inlet and a first outlet in a direction substantially orthogonal to the main circulation direction of the second fluid in each circulation layer for the second fluid. According to this aspect of the invention, the resulting heat exchanger is thus a cross-flow exchanger.

[0030] There is also nothing to prevent the supply conduit from being configured to allow the first fluid to circulate in a direction substantially parallel to the main circulation direction of the second fluid in each circulation layer for the second fluid. According to this aspect of the invention, the heat exchanger thus formed is a co-current or counter-current exchanger.

[0031] The present invention also relates to a cooling system comprising a heat exchanger according to the invention.

[0032] Nothing prevents the design of air conditioning systems that include heat exchangers according to the present invention.

[0033] The present invention also relates to a method for manufacturing such a heat exchanger. Specifically, according to the manufacturing method of the present invention, in this manufacturing method, the heat exchanger comprises: - A flow housing, including a first inlet and a first outlet, wherein the first inlet is for a first fluid to flow into the flow housing, and the first outlet is for the first fluid to flow out of the flow housing. - A second inlet and a second outlet, the second inlet being for the second fluid to flow into the flow housing, and the second outlet being for the second fluid to flow out of the flow housing. The manufacturing method is characterized in that the heat exchanger includes a plurality of circulation plates for a first fluid, each circulation plate for the first fluid comprising: - Multiple conduits are configured to allow a first fluid to circulate between a first inlet and a first outlet. - At least one first portion and at least one second portion, the first portion extending primarily along a plane having a non-zero inclination relative to the principal plane, and the second portion extending along the principal plane. The circulation plates for the first fluid are arranged such that a first portion of the first circulation plate is arranged substantially parallel to a first portion of the second circulation plate, and are arranged such that a second portion of the first circulation plate is arranged substantially parallel to a second portion of the second circulation plate, with each space between the two circulation plates defining a circulation layer for the second fluid.

[0034] The present invention also relates to heat exchangers, methods for manufacturing such heat exchangers, cooling systems, and aircraft, characterized by a combination of all or some of the features mentioned above or below. Attached Figure Description

[0035] Other objects, features, and advantages of the invention will become apparent upon reading the following description, which is given by way of non-limiting example only and with reference to the accompanying drawings, in which: Figure 1 This is a schematic longitudinal cross-sectional view of the heat exchanger according to the present invention. Figure 2 This is a schematic perspective view of a heat exchanger according to the present invention. Figure 3 This is a schematic view showing details of the longitudinal end of a heat exchanger according to the present invention. Figure 4 This is a schematic cross-sectional view of a heat exchanger according to the present invention. Detailed Implementation

[0036] In the figures, dimensions and proportions are not strictly adhered to for illustrative and clarity purposes. Consistent, similar, or identical elements are indicated by the same reference numerals in all figures.

[0037] Figures 1 to 4 An embodiment of a heat exchanger according to the present invention is shown. Figure 1 This represents the longitudinal cross-section of the heat exchanger core. For example, it can be seen in... Figure 1 and Figure 2 As seen in the image, the heat exchanger includes multiple plates 14 for circulating a first fluid between a first inlet 35 and a first outlet 36. The first inlet 35 is for the first fluid to flow into the flow housing, and the first outlet 36 is for the first fluid to flow out of the flow housing.

[0038] If it is possible Figure 2 As seen in the diagram, the first inlet 35 for the first fluid is the opening of the inlet box 37 for the first fluid, and the first outlet 36 for the first fluid to flow out of the flow housing is the opening of the outlet box 39 for the first fluid.

[0039] In the embodiment shown here, the inlet box 37 and outlet box 39 for the first fluid are arranged at the same longitudinal end of the exchanger, and the first fluid follows a U-shaped configuration within the core of the exchanger. At the other longitudinal end of the exchanger, the exchanger here includes a reversing box 38 for the first fluid (corresponding to the base of the U-shaped portion of the U-shaped loop). Other types of circulation configurations for the first and second fluids are also possible, such as simple cross-flow configurations or Z-shaped configurations (parallel or counter-flow).

[0040] Figure 2 It shows Figure 1 The core of the heat exchanger, including an inlet box 37 for the first fluid, an outlet box 39 for the first fluid, and a reversing box 38 for the first fluid, has been added to the core of the heat exchanger.

[0041] If it is possible Figure 1 and Figure 2 As seen in the image, the heat exchanger comprises three non-coplanar parts 20, 21, and 22, with the central part 20 arranged between the two transverse parts 21 and 22. Line 26 ( Figure 1 Line 20 (21) indicates the boundary between the central portion 20 and the transverse portion 21. Similarly, line 27 indicates the boundary between the central portion 20 and the transverse portion 22. Each transverse portion 21, 22 is inclined relative to the central portion 20.

[0042] If possible Figure 1 and Figure 2As seen in the diagram, each plate 14 for the circulation of the first fluid extends to have three distinct, substantially flat, and non-coplanar portions 15, 16, and 17. Thus, each plate 14 for the circulation of the first fluid includes a central portion 16 arranged between two transverse portions 15 and 17. Each transverse portion 15, 17 of the plate 14 for the circulation of the first fluid extends primarily on a plane having a non-zero inclination 25° relative to the main plane, along which the central portion 16 of the plate 14 for the circulation of the first fluid extends. The inclination is between 10° and 50°, particularly between 20° and 30°.

[0043] If possible Figure 4 As seen in the diagram, each plate 14 for circulation of the first fluid integrates a plurality of conduits 18, which are configured to allow circulation of the first fluid between a first inlet 35 and a first outlet 36. In the illustrated embodiment, within each portion 15, 16, 17 of each plate 14 for circulation of the first fluid, the conduits 18 extend longitudinally and parallel to each other in a straight line. The conduits 18 extend continuously (uninterruptedly) within the same plate 14 for circulation of the first fluid, i.e., for example, extending within the transverse portion 17, then within the central portion 16, and finally within the transverse portion 15. Thus, the conduits 18 also extend substantially parallel to each other within each portion 15, 16, 17 of the same plate 14 for circulation of the first fluid.

[0044] Each section 15, 16, 17 of each plate 14 used for the circulation of the first fluid has a transverse cross section that is substantially rectangular in shape.

[0045] exist Figures 1 to 4 The heat exchanger, as shown in the diagram, also includes two external plates 40 and 42. The upper external plate 40 (in the case of plate 14 for the circulation of the first fluid) is positioned such that... Figures 1 to 4 The view shown in the figure includes three non-coplanar planar portions 2, 3, and 4, with the central portion 3 arranged between the two transverse portions 2 and 4. Similarly, the lower outer plate 42 includes three non-coplanar planar portions 5, 6, and 7, with the central portion 6 arranged between the two transverse portions 5 and 7.

[0046] The plate 14 for circulation of the first fluid is arranged substantially parallel to each other and is located between two outer plates 40 and 42. Parts 2 and 5, 3 and 6, 4 and 7 of the two outer plates 40 and 42 are also arranged substantially parallel to each other and parallel to the plate 14 for circulation of the first fluid.

[0047] In the illustrated embodiment, each transverse portion 15, 17 of each plate 14 for circulation of the first fluid is inclined on the same side relative to the central portion 16 and with a substantially uniform inclination. Similarly, each plate 14 of the same heat exchanger for circulation of the first fluid is substantially uniform, i.e., in particular, each plate 14 for circulation of the first fluid has a uniform size, and the central portion 16 and the transverse portions 15, 17 have uniform dimensions between the central portion 16 and the transverse portions 15, 17. Specifically, within each heat exchanger, a plane is formed at the boundary between the central portion 20 and the transverse portion 21, which includes line 26 and is orthogonal to each main plane, along which each central portion 16 of the plate 14 for circulation of the first fluid extends. Similarly, within each heat exchanger, a plane is formed at the boundary between the central portion 20 and the transverse portion 22, which includes line 27 and is orthogonal to each main plane, along which each central portion 16 of the plate 14 for circulation of the first fluid extends.

[0048] The space between two adjacent plates 14 (close to each other but not in contact) for the circulation of the first fluid defines a circulation layer for the second fluid between the second inlet and the second outlet of the heat exchanger.

[0049] Each circulation layer for the second fluid is closed at the side of the first inlet 35 for the first fluid, the first outlet 36 for the first fluid, and the reversing box 38 for the first fluid by sealing rods 10, 11, and 12. Each sealing rod 10, 11, and 12 extends longitudinally substantially orthogonal to the longitudinal direction of each plate 14 for circulation of the first fluid. The sealing rods 10, 11, and 12 are arranged at the longitudinal ends of the heat exchanger between the plates 14 for circulation of the first fluid and between the plates 14 for circulation of the first fluid and each outer plate 40, 42.

[0050] The sealing rods 10, 11, and 12 are configured within each circulation layer for the second fluid, such that each plate 14 for circulation of the first fluid has a substantially uniform circulation length for the first fluid. Furthermore, the sealing rods 10, 11, and 12 are configured within each circulation layer for the second fluid, such that the width of the passage within each circulation layer of the heat exchanger for the second fluid is substantially uniform, within which the second fluid circulates. This allows for significant limitation of pressure loss within the passages for the second fluid.

[0051] Each of the closing rods 10, 11, and 12 has a flat surface 13, which faces inward toward the core and contacts the corrugated fins 31 (or guide elements), such as those that can... Figure 3 What I saw in the video.

[0052] exist Figures 1 to 4 In the embodiment of the heat exchanger shown, each sealing bar 10, 11, 12 is substantially parallelepiped. However, nothing prevents providing another geometry to the sealing bars.

[0053] For example, the closing rod 12 is offset by an offset of 9 relative to the rod 11. All closing rods 10, 11, and 12 used within the exchanger are identical. Here, each closing rod 10, 11, and 12 thus has an offset of 9, forming a set of ladder-like structures on the outer side of the core in a stepped manner. This offset also exists within the core, with the face 13 of each closing rod 10, 11, and 12 offset relative to the closing rod of the directly adjacent neighboring layer. Therefore, the closing rods 10, 11, and 12 of the same portion of the exchanger are offset from each other in a direction parallel to the main plane, and the portion of the plate 14 used for the circulation of the first fluid extends along the main plane.

[0054] Therefore, within the same heat exchanger, each circulation layer for the first fluid (within plate 14 for circulation) has a substantially uniform length.

[0055] exist Figures 1 to 4 In the embodiment of the heat exchanger shown, each sealing bar 10, 11, 12 arranged between two plates 14 for circulation of the first fluid is arranged such that its outer longitudinal edge is aligned with the end of one of the plates 14 for circulation of the first fluid.

[0056] In other words, each transverse portion 15, 17 of the plate 14 for circulating the first fluid has two main faces, which are opposite and parallel to each other. Each main face contacts the closing rods 10, 11, 12. Each closing rod in contact with the same transverse portion 15, 17 of the plate 14 for circulating the first fluid has an edge 13, which is arranged toward the circulation layer for the second fluid. The edges 13 of each closing rod 10, 11, 12 of the same transverse portion 15, 17 of the plate 14 for circulating the first fluid extend along different and parallel planes. Therefore, within each circulation layer for the second fluid, the distance between the plane forming the boundary (and including lines 26, 27) and the edges 13 of the closing rods 10, 11, 12 of the circulation layer for the second fluid is constant within the same exchanger, with the boundary located between the central portion 20 and the transverse portions 21, 22. This results in the edges 13 of the rods in each circulation layer for the second fluid being offset layer by layer. Therefore, the circulation layers for the second fluid are aligned with each other, which allows for limiting pressure loss and optimizing the efficiency of the heat exchanger.

[0057] Therefore, each closing bar 10, 11, 12 of the transverse portions 15, 17 of the exchanger's circulation plate 14 is offset relative to the adjacent (or nearest) closing bar in a direction parallel to the main plane, the transverse portions 15, 17 extending along the main plane.

[0058] In addition, if it is possible Figure 1 and Figure 2 As seen in the diagram, the heat exchanger does not include any sealing bars between the transverse sections 2 and 4 and the central section 3, which would potentially affect the circulation of the second fluid. Therefore, the pressure loss within the circulation layer for the second fluid is also minimized.

[0059] If possible Figure 1 (and Figure 3 As specifically seen in the diagram, each of the closing rods 11, 12 is arranged between two plates 14 for the circulation of the first fluid. The inlet box 37 and outlet box 39 for the first fluid, as well as box 38, are not shown in the diagram. Figure 1 middle( Figure 3 (Details of the closing rod are shown).

[0060] Welds 44 and 45 are Figure 2 The welds 44 and 45 are visible in the middle. Welds 44 and 45 allow the inlet box 37 for the first fluid, the outlet box 39 for the first fluid, and the reversing box 38 for the first fluid to be fixed to the core, that is, fixed to the ends of the outer plates 40, 42, the closing rods 10, 11, 12, and the plate 14 for circulation of the first fluid.

[0061] Fins 30, 31, and 32 (or flow guides) are arranged in each circulation layer for the second fluid, i.e., this circulation layer is also referred to herein as the cold passage of the heat exchanger. The structure of the heat exchanger according to the invention also allows for the use of fins of the same size in the transverse portions 21 and 22 of the heat exchanger core, as well as in the central portion 20 of the heat exchanger core. Fins 30, 31, and 32 can be formed by corrugated plates, which form circulation channels that can have various geometries, such as rectangular, triangular, or wavy shapes.

[0062] exist Figures 1 to 4 In the embodiment shown, the heat exchanger includes four plates 14 for circulation of a first fluid and five circulation layers for a second fluid. One of the two end circulation layers is formed between the circulation plate 14 closest to the upper outer plate 40 and the upper outer plate 40 itself, and the other of the two end circulation layers is formed between the circulation plate 14 closest to the lower outer plate 42 and the lower outer plate 42 itself.

[0063] Therefore, this heat exchanger allows for a pressure loss of less than +20% on the passage of the second fluid, which circulates between plates 14 used for the circulation of the first fluid, and the optimization of the bending angle allows this effect to be reduced to less than +5%.

[0064] The heat exchanger according to the invention has an exchange power similar to that of a so-called flat heat exchanger, and the pressure loss of the circulation path within the plate 14 for the circulation of the first fluid is comparable.

[0065] To achieve this performance, the heights of fins 30, 31, and 32 are defined as a function of the tilt angle 25. Therefore, for angles of 20° and 30°, the ratios of the heights of fins 30, 31, and 32 (or “separators”) (the heights of fins 31 and 32 within the transverse portions 21 or 22 / the height of fin 30 within the central portion 20) are 0.92 and 0.81, respectively.

[0066] This heat exchanger can be installed in cooling systems for gaseous or liquid fluids, and it can also be installed in other applications such as condensers.

[0067] For example, each plate 14 for circulation of the first fluid can be prepared by brazing a tube portion designed to form a conduit 18 that contacts a serrated flow guide, such a tube portion being pre-arranged in each of the serrated flow guides.

Claims

1. A heat exchanger (1), comprising: - A flow housing, including a first inlet (35) and a first outlet (36), wherein the first inlet is for a first fluid to flow into the flow housing, and the first outlet is for the first fluid to flow out of the flow housing. - A second inlet and a second outlet, wherein the second inlet is for the second fluid to flow into the flow housing, and the second outlet is for the second fluid to flow out of the flow housing. The exchanger is characterized in that it includes a plurality of circulation plates (14) for the first fluid, each circulation plate (14) for the first fluid comprising: - Multiple conduits (18) are configured to allow the first fluid to circulate between the first inlet (35) and the first outlet (36). - At least one first portion (15) and at least one second portion (16), the first portion (15) extending primarily along a plane having a non-zero inclination (25) relative to the main plane, and the second portion (16) extending along the main plane, and The circulation plate (14) for the first fluid is configured such that a first portion (15) of the first circulation plate (14) is arranged substantially parallel to a first portion (15) of the second circulation plate (14), and is configured such that a second portion (16) of the first circulation plate (14) is arranged substantially parallel to a second portion (16) of the second circulation plate (14), each space between the two circulation plates (14) defining a circulation layer for the second fluid. The exchanger further includes sealing rods (10, 11, 12) for each circulation layer of the second fluid, at least one sealing rod (11, 12) being arranged between two circulation plates (14) of the first fluid, and at least one sealing rod (11, 12) being arranged between a first portion (15) of the first circulation plate (14) and a first portion (15) of the second circulation plate (14). The closing rods (10, 11, 12) that are in contact with at least one first portion (15) of the circulation plate (14) of the exchanger are offset from each other in a direction parallel to the main plane, and the first portion (15) of the circulation plate (14) of the first fluid extends along the main plane such that the length of the passage in each circulation plate of the first fluid is substantially uniform, wherein the first fluid circulates in the passage in each circulation plate.

2. The heat exchanger according to claim 1, characterized in that, The tilt (25) is at least 10°.

3. The heat exchanger according to claim 1 or 2, characterized in that, The inclination (25) is between 15° and 50°.

4. The heat exchanger according to any one of claims 1 to 3, characterized in that, The conduit (18) extends substantially parallel to each other within the first portion (15) and the second portion (16) of the circulation plate (14) for the first fluid.

5. The heat exchanger according to any one of claims 1 to 4, characterized in that, Each circulation plate (14) further includes a third portion (17) that extends primarily along a plane having a non-zero inclination (25) relative to the main plane, and a second portion (16) that extends along the main plane and connects the first portion (15) and the third portion (17).

6. The heat exchanger according to any one of claims 1 to 5, characterized in that, Each circulation plate (14) for the first fluid is formed from a single piece that integrates the conduit (18).

7. A cooling system comprising a heat exchanger according to any one of claims 1 to 6.

8. A method for manufacturing a heat exchanger (1), the heat exchanger comprising: - A flow housing, including a first inlet (35) and a first outlet (36), wherein the first inlet is for a first fluid to flow into the flow housing, and the first outlet is for the first fluid to flow out of the flow housing. - A second inlet and a second outlet, wherein the second inlet is for the second fluid to flow into the flow housing, and the second outlet is for the second fluid to flow out of the flow housing. The heat exchanger is characterized in that it includes a plurality of circulation plates (14) for the first fluid, each circulation plate (14) for the first fluid comprising: - Multiple conduits (18) are configured to allow the first fluid to circulate between the first inlet (35) and the first outlet (36). - At least one first portion (15, 17) and at least one second portion (16), the first portion (15, 17) extending primarily along a plane having a non-zero inclination (25) relative to the principal plane, and the second portion (16) extending along the principal plane. The circulation plates (14) for the first fluid are arranged such that a first portion (15, 17) of the first circulation plate (14) is arranged substantially parallel to a first portion (15, 17) of the second circulation plate (14), and are arranged such that a second portion (16) of the first circulation plate (14) is arranged substantially parallel to a second portion (16) of the second circulation plate (14), each space between the two circulation plates (14) defining a circulation layer for the second fluid. - Closing rods (10, 11, 12), which are also arranged for each circulation layer of the second fluid, at least one closing rod (11, 12) is arranged between the two circulation plates (14) of the first fluid, and at least one closing rod (11, 12) is arranged between the first portion (15) of the first circulation plate (14) and the first portion (15) of the second circulation plate (14). The closing rods (10, 11, 12) that are in contact with at least one first portion (15) of the circulation plate (14) of the exchanger are offset from each other in a direction parallel to the main plane, and the first portion (15) of the circulation plate (14) of the first fluid extends along the main plane such that the length of the passage in each circulation plate of the first fluid is substantially uniform, wherein the first fluid circulates in the passage in each circulation plate.

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