• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:FR3084408A1
    申请号:FR1856830
    申请日:2018-07-24
    公开日:2020-01-31
    发明作者:Benjamin Oblinger；Gregory Gangnant；Julie Pouzoulet
    申请人:Faurecia Systemes dEchappement SAS；
    IPC主号:
    专利说明:

    DESCRIPTION
    Heat exchanger and corresponding manufacturing process
    The present invention generally relates to heat exchangers, in particular for motor vehicle exhaust lines.
    Such exchangers may include an exchanger body defining an internal volume and a plurality of longitudinal tubes housed in the internal volume, provided for the circulation of a first fluid, for example exhaust gases. A second fluid, for example a cooling fluid, circulates in the exchanger body, around the tubes, from an inlet to an outlet.
    A constant problem in this type of exchanger is to prevent the second fluid from following the shortest path from the inlet to the outlet. If a significant part of the second fluid follows this short-circuit path, certain areas of the tubes may be poorly cooled.
    It is known to insert two combs around the tubes, oriented in opposite directions, to form a baffle forcing the second fluid to adopt an S-shaped path from the inlet to the outlet.
    Such an arrangement makes it possible to obtain a good quality heat exchange between the two fluids, but is mechanically complex.
    In this context, the invention aims to propose a heat exchanger making it possible to obtain a good quality heat exchange between the two fluids, but which is mechanically less complex.
    To this end, the invention relates according to a first aspect to a heat exchanger for an exhaust gas recirculation system, comprising: an exchanger body defining an internal volume; a plurality of longitudinal tubes housed in the internal volume, provided for the circulation of a first fluid, at least part of the tubes being juxtaposed transversely and forming a sheet of tubes falling between upper and lower planes, the tubes of said ply of tubes being separated from each other by circulation passages of a second fluid, at least the upper plane containing the longitudinal and transverse directions, the upper plane being directly opposite an upper part of the body exchanger and being separated therefrom by a gap; a second fluid inlet opening into the internal volume, formed in the upper part of the exchanger body; and a member for guiding the second fluid in the internal volume, comprising a deflector having a transverse zone at least partially closing the gap between the upper part and the upper plane.
    The deflector prevents the second fluid from adopting an essentially longitudinal flow at the outlet of the second fluid inlet. It deflects the second fluid deep into the passages, which contributes to obtaining a satisfactory quality of heat exchange between the fluids.
    The heat exchanger can also have one or more of the characteristics below, considered individually or in all technically possible combinations:
    - The guide member comprises a grid for distributing the second fluid, disposed in the gap between the upper part and the upper plane, opposite the inlet for the second fluid;
    - The deflector of the guide member includes teeth engaged in the passages;
    - the distribution grid, the transverse zone and the teeth have come together with each other;
    the distribution grid, the transverse zone and the teeth are formed in the same metal plate;
    the distribution grid extends substantially over the entire width of the ply of tubes and has at least one hole opposite each passage, the second fluid inlet being placed opposite at least one central passage among the passages , the at least one hole having a cross section increasing transversely from the at least one central passage;
    - each tooth extends transversely over the entire width of the corresponding passage;
    - Each passage extends over a determined height in a direction of elevation substantially perpendicular to the longitudinal and transverse directions, the corresponding tooth extending over a height between 5% and 50% of said determined height;
    - at least one of the two tubes framing said passage has a protruding rib in the passage, extending the tooth in the direction of elevation, the rib preferably having interruptions.
    According to a second aspect, the invention relates to a method for manufacturing a heat exchanger having the above characteristics, comprising the following steps: formation of the guide member for the second fluid, by cutting and shaping it 'a metal plate; positioning of the longitudinal tubes and of the guide member in the exchanger body; fixing the longitudinal tubes, the guide member and the exchanger body to each other.
    Other characteristics and advantages of the invention will emerge from the detailed description which is given below, by way of indication and in no way limitative, with reference to the appended figures, among which:
    Figure 1 is a simplified schematic representation of a heat exchanger according to the invention;
    Figure 2 is a partial perspective view of the heat exchanger of Figure 1, the body being shown translucent to reveal the tubes and the guide member of the second fluid;
    Figure 3 is a section of the heat exchanger of Figure 2 taken in a plane perpendicular to the longitudinal direction, considered according to the incidence of arrows III;
    Figure 4 is a partial perspective view of a longitudinal end of the heat exchanger of Figure 2, the exchanger body not being shown, the longitudinal tubes being cut transversely;
    Figure 5 is a perspective view of the guide member of the second fluid of Figure 2;
    Figures 6 illustrates the plate from which the second fluid guide member is made;
    Figure 7 illustrates the state of the plate of Figure 6 after the cutting operation and before the shaping operation; and
    Figure 8 is an elevational view of an area of a tube defining one of the second fluid passages, showing the rib extending the tooth engaged in said passage.
    The heat exchanger 1 shown in Figure 1 is intended to be interposed in a vehicle exhaust line, in particular of a motor vehicle such as a car or a truck.
    This heat exchanger is for example interposed on the EGR (Exhaust Gas Recycling) line, which allows part of the exhaust gases to be recycled to the inlet of the engine combustion chambers, as a mixture with fresh air.
    Alternatively, the heat exchanger is integrated into an EHRS (Exhaust Heat Recovery System) or any other system in the exhaust line.
    According to another variant, the heat exchanger is integrated into another circuit of the vehicle, or even into a static system, which is not on board a vehicle.
    The heat exchanger 1 is provided for bringing a first fluid and a second fluid into thermal contact.
    The first fluid is for example the vehicle exhaust gases, the second fluid being a heat transfer fluid intended to cool the exhaust gases. The second fluid is for example a liquid such as water with possible additives.
    As a variant, the two fluids are of any other type.
    The heat exchanger 1 comprises an exchanger body 3 defining an internal volume 5 and a plurality of longitudinal tubes 7 housed in the internal volume 5 (Figures 2 and 3).
    The tubes 7 are provided for the circulation of the first fluid.
    The exchanger body 3 has a tubular wall 9, with a longitudinal central axis. In the example shown, the tubular wall 9 is a cylinder of substantially rectangular cross section.
    The tubes 7 are typically all identical. They are rectilinear, of substantially rectangular section. They are parallel to each other.
    Each tube 7, considered in section in a plane perpendicular to the longitudinal direction, is thus delimited by two opposite lateral faces 11 opposite one another, an upper face 13 and a lower face 15. The upper and lower faces 13 , 15 connect the side faces 11 to each other.
    The lateral faces 11 are substantially flat and perpendicular to a transverse direction. The transverse direction is perpendicular to the longitudinal direction.
    At least a part of the tubes 7 is juxtaposed transversely and forms a sheet of tubes falling between upper and lower planes P1 and P2 (FIG. 3). The tubes 7 of said sheet are separated from each other by passages 19 for circulation of the second fluid.
    In the example shown, all the tubes 7 are juxtaposed in a single sheet.
    The tubes 7 are arranged in such a way that their lateral faces 11 are placed opposite. Each passage 19 is thus delimited by the faces 11 of two neighboring tubes in the sheet.
    The sheet typically comprises a large number of tubes, for example at least
    5.
    Each tube 7 has a great height, taken in a direction of elevation, by comparison with its width taken in the transverse direction. The direction of elevation E is substantially perpendicular to the longitudinal and transverse directions
    L and T. These directions are represented by arrows in FIGS. 2 and 3.
    The tubes 7 extend substantially over the entire longitudinal length of the tubular wall 9.
    The exchanger body 3 comprises two end plates 21, engaged in the two opposite longitudinal ends of the tubular wall 9 (Figures 2 to 4). The tubular wall 9 has at each of its longitudinal ends an edge with a closed contour 23, fixed in leaktight manner to the corresponding end plate 21.
    Each end plate 21 has a plurality of oblong holes 25, juxtaposed transversely. Each tube 7 has a longitudinal end fixed in sealed manner to the peripheral edge of one of the oblong orifices of a first of the two plates, its opposite longitudinal end being fixed in sealed manner to the peripheral edge of one of the oblong orifices of the other of the two plates (figure 4).
    Thus, the internal volume 5 provided for the circulation of the second fluid is delimited by the tubular wall 9 and the end plates 21.
    The upper plane P1 typically corresponds to a plane containing the longitudinal and transverse directions, tangent to at least one of the tubes 7 without cutting the other tubes. It is shown in Figure 3. It is tangent to the upper face 13 of at least one tube 7. In the example shown, the upper faces 13 of the tubes 7 are in the upper plane P1.
    The lower plane P2 is also typically a plane containing the longitudinal and transverse directions, tangent to at least one of the tubes 7 without cutting the other tubes. It is shown in Figure 3. It is tangent to the underside 15 of at least one tube 7. In the example shown, the undersides 15 of the tubes 7 are in the lower plane P2.
    The upper plane P1 is directly opposite an upper part 27 of the exchanger body 3 and is separated from the latter by a gap 29.
    The gap 29 typically extends over the entire transverse width of the tube ply and over the entire longitudinal length of the tube ply. It constitutes a preferred escape route for the second fluid.
    A second fluid inlet 31 opening into the internal volume 5 is formed in the upper part 27 of the exchanger body 3 (FIG. 1).
    A second fluid outlet 33 opening into the internal volume 5 is also provided by the exchanger body 3.
    As can be seen in FIG. 1, the second fluid inlet 31 is formed on a first longitudinal half of the exchanger body 3, the second fluid outlet 33 being formed on a second longitudinal half of the exchanger body 3 opposite to the first half.
    The heat exchanger 1 also comprises a member 35 for guiding the second fluid in the internal volume 5, comprising:
    * a grid 37 for distributing the second fluid, disposed in the gap 29 between the upper part 27 and the upper plane P1, opposite the second fluid inlet 31;
    * a deflector 39 comprising a transverse zone 41 closing at least partially the gap 29 between the upper part 27 and the upper plane P1, and teeth 43 engaged in the passages 19.
    This guide member is shown in particular in FIG. 5.
    It is provided to guide the second fluid flowing in the internal volume 5, from the second fluid inlet 31 to the second fluid outlet 33, so as to improve the distribution of second fluid in the passages 19.
    The distribution grid 37, the transverse zone 41 and the teeth 43 are integrally formed with one another.
    More precisely, the distribution grid 37, the transverse zone 41 and the teeth 43 are formed in the same metal plate 49, as visible in FIGS. 5 to 7.
    The distribution grid 37 is a flat area of the metal plate 49, typically extending in a longitudinal and transverse plane, for example in the upper plane P1. It extends over the entire width of the tube sheet. It is typically placed on the upper faces 13 of the tubes 7 and rigidly fixed to the tubes 7.
    The distribution grid 37 has, opposite each passage 19, at least one hole 51 (FIG. 4). Typically it has a single hole 51 opposite each passage 19. The holes 51 are therefore aligned transversely.
    The second fluid inlet 31 is placed opposite at least one central passage, referenced here 53, among the passages 19.
    In the example shown, two so-called central passages 53 are located opposite the entrance 31, as visible in FIG. 3.
    The inlet 31, in the transverse direction, is substantially in the center of the sheet of tubes.
    The at least one hole 51 has a cross section increasing transversely from the at least one central passage 53.
    The passage section considered is the total section offered collectively to the second fluid by the hole or holes 51 associated with the passage of second fluid 19.
    By this is meant that the passage section offered to the second fluid is relatively smaller for the hole (s) 51 associated with the central passages 53. The passage section offered to the second fluid is slightly larger for the hole (s) 51 associated with the two second fluid passages 19 adjoining the central passages 53. The passage section of the holes gradually increases when one moves transversely from the central passages.
    Such an arrangement makes it possible to distribute the second fluid arriving through the inlet 31 in a uniform manner in the passages 19.
    The transverse zone 41 is defined by a solid part of the plate 49. It comprises two flaps 55, 57, of the same shape, pressed one on the other. The two flaps 55, 57 are exactly superposed one on the other, as visible in FIG. 5.
    The flaps 55 and 57 are linked to each other by an upper fold line 59 of the plate 49, of transverse orientation. The flap 55 is linked to a transverse edge of the grid 37 by a lower fold line 61, of transverse orientation (FIG. 7).
    The teeth 43 are integral with a transverse edge 63 of the flap 57, opposite the upper fold line 59.
    The flaps 55 and 57 extend in a plane containing the direction of elevation and the transverse direction. They are substantially perpendicular to the distribution grid 37.
    The cross-section 41 closes at least 90% of the cross-section of the gap 29, preferably at least 95% of said cross-section, more preferably at least 98% of said cross-section.
    As illustrated in FIG. 3, the transverse area 41 falls within a determined transverse plane. The gap 29 has an internal section determined in said transverse plane. The outer section of the transverse area 41 is substantially conjugate with the inner section of the gap 29 in said plane.
    The second fluid inlet 31 is formed on a boss 65 formed in the exchanger body 3 (Figures 2 and 3).
    This boss 65 is convex towards the outside of the exchanger body 3. The inlet 31 is formed at the top of the boss 65.
    The transverse area 41 is typically part of a transverse plane intersecting the boss 65. It therefore has the shape of a truncated pyramid, as illustrated in FIG. 3.
    The upper fold line 59 constitutes the upper edge of the transverse zone 41 and point towards the upper zone 27 of the exchanger body 3. It is shorter in the transverse direction than the lower fold line 61 and than the transverse edge 63.
    The upper fold line 59 is connected to the lower fold line 61 by oblique edges 67 of the flap 55. It is connected to the transverse edge 63 by oblique edges 69 of the flap 57, which exactly overlap the oblique edges 67.
    The transverse zone 41 is interposed longitudinally between the second fluid inlet 31 and the second fluid outlet 33.
    The teeth 43 are all attached to the transverse zone 41.
    They come from the transverse edge 63 of the flap 57. They are regularly spaced along the transverse edge 63.
    Each second fluid circulation passage 19 receives one of the teeth 43.
    According to an alternative embodiment not shown, one of the teeth 43 is inserted between the exchanger body 3 and the tube 7 located at the first transverse end of the ply. Another of the teeth 43 is inserted between the exchanger body 3 and the tube 7 located at the second transverse end of the ply.
    Each tooth 43 extends transversely over the entire width of the corresponding passage 19.
    The teeth 43 have for example an L shape, with a free section 71 of orientation in the direction of elevation, and an intermediate section of substantially longitudinal orientation connecting the free section 73 to the transverse area 41.
    Each passage 19 extends over a height determined according to the direction of elevation. The corresponding tooth 43 extending over a height between 5% and 50% of said determined height, preferably between 10% and 30% of said determined height, more preferably between 10% and 20% of said determined height .
    Preferably, at least one of the two tubes 7 framing said passage 19 has a rib 75 projecting from passage 19, extending tooth 43 in the direction of elevation. The rib 75 is visible in particular in Figure 8. It is formed on the side face 11 of the tube.
    Typically, the two tubes 7 framing said passage 19 each have a rib 75 projecting from the passage 19. These ribs are substantially identical.
    Each rib 75 typically extends at least from the upper face 13 over at least 50% of the height of the tube 7 taken in the direction of elevation E.
    In the example shown in FIG. 4, the rib 75 extends first, from the upper face 13, in the direction of elevation, then in an inclined direction directed longitudinally towards the end plate 21 and following the direction of elevation towards the lower face 15.
    The two ribs 75 are placed opposite one another in the transverse direction. Together, they close the passage 19 over substantially its entire transverse width. To do this, each rib 75 protrudes relative to the lateral face 11 of the corresponding tube 7 over a height such that it practically touches the rib 75 opposite.
    The rib 75 preferably has interruptions 77, typically regularly spaced. This creates a second fluid flow in the passage immediately behind the rib 75, which provides a more uniform temperature field along the tube.
    FIG. 8 shows that each tube 7 has reliefs 79 in the form of a stud, formed by deformation of the side wall 11 of the tube. These reliefs are spacers making it possible to guarantee the spacing between the tubes 7, and therefore the width of the passage 19.
    The operation of the heat exchanger will now be described.
    The first fluid enters the heat exchanger through one longitudinal end of the tubes 7. It circulates along the tubes 7 and exits from the heat exchanger at the other longitudinal end of the tubes 7.
    The second fluid enters the heat exchanger through the second fluid inlet 31. It flows into the internal volume 5.
    The second fluid, leaving the inlet 31, is located in the gap 9. It cannot flow longitudinally along the gap 9 towards the outlet 33, due to the presence of the transverse zone.
    It is therefore forced to pass through the distribution grid 37 and to penetrate inside the circulation passages 19.
    The hole (s) 51 covering the central passage (s) 53, located opposite the inlet 31, are relatively smaller and offer relatively greater resistance to the flow of fluid. On the contrary, the hole or holes 51 covering the passage (s) 19 offset transversely with respect to the inlet 31 are relatively larger and offer a relatively lower resistance to the flow of the fluid.
    Therefore, the second fluid is distributed in a substantially uniform manner in the different passages 19, the different passages 19 receiving respective fluid flow rates close to each other.
    The teeth 43 prevent the second fluid from circulating, in the same passage 19, essentially longitudinally in the zone located immediately under the gap 9.
    The teeth 43 deflect the second fluid towards the underside of the tube, deep in the passage 19.
    The ribs 75 extend this movement, and deflect the second fluid even more deeply into the passages 19, in a direction opposite to the gap 9. A small flow of second fluid passes through the interruptions 77.
    When the second fluid reaches the end of the ribs 75, it flows longitudinally towards the outlet of the second fluid 33.
    The invention also relates to a method for manufacturing a heat exchanger 1 having the above characteristics.
    The manufacturing process comprising the following steps:
    * Formation of the guide member 39 of the second fluid, by cutting and shaping a metal plate;
    * Installation of the longitudinal tubes 7 and of the guide member 39 in the exchanger body 3;
    * Fixing the longitudinal tubes 7, the guide member 39 and the exchanger body 3 to each other.
    The metal plate 49 from which the guide member is made is illustrated in Figure 6.
    It is typically flat, and has a thickness of between 0.2 and 1 mm, advantageously between 0.3 and 0.8 mm and even more advantageously 0.4 mm. It is made of steel, preferably austenitic steel.
    The cutting and shaping step comprises an operation of cutting the plate 49, so as to delimit the outline of the distribution grid and to create the holes 51.
    The cut also makes it possible to create the oblique edges 67, 69, and the teeth 43.
    The state of the plate 49 after the cutting operation is illustrated in FIG. 7.
    The cutting and shaping step comprises a shaping operation, during which the plate 49 is folded substantially at 90 ° around the lower fold line 61, and at 180 ° around the upper fold line 59.
    The shaping operation also makes it possible to shape the teeth 43.
    The shaping operation is performed after or at the same time as the cutting operation.
    The folding and shaping step is for example a stamping step.
    The fixing of the longitudinal tubes 7, the guide member 39 and the exchanger body 3 to each other is typically done by brazing, in an oven.
    In the present description, reference has been made to upper and lower faces or directions. The upper face and the upper direction are not necessarily oriented upwards and can be oriented in any direction. The same comment applies to the underside and the bottom direction.
    The heat exchanger can have multiple variants.
    Alternatively, the tubes are arranged in several layers, superimposed on each other in the direction of elevation.
    The two ribs projecting in the second fluid circulation passage, arranged opposite one another, can be replaced by a single rib, carried by one of the two tubes.
    The heat exchanger body and the tubes have all appropriate shapes.
    The entrance is not necessarily formed on a boss. It is alternatively formed in an area which does not protrude from the exchanger body.
    The invention has multiple advantages.
    The guide member is particularly easy and inexpensive to manufacture because the distribution grid, the transverse zone and the teeth are formed in the same metal plate.
    The fact that the transverse zone blocks at least 90% of a cross section of the interstice contributes to obtaining a good distribution of the second fluid in the internal volume of the exchanger body, due to the absence of short circuit path from the entrance to the exit.
    The fact that the transverse zone is interposed longitudinally between the second fluid inlet and the second fluid outlet also contributes to the good distribution of the second fluid.
    When the second fluid inlet is provided on a boss formed in the exchanger body, the diffusion of the second fluid from the inlet is facilitated. The transverse zone blocks the circulation of the fluid longitudinally in the gap closest to the entry.
    The teeth block the circulation of the second fluid longitudinally in the upper part of the passages, immediately below the gap. It is not possible to form ribs on the tubes at this point, since these ribs would be too close to the junction edge between the lateral face and the upper face of the tubes.
    The use of projecting ribs formed in the tubes in the extension of the teeth makes it possible to divert the second fluid in a convenient manner. These ribs are inexpensive to make and easy to install.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1- Heat exchanger (1) for an exhaust gas recirculation system, comprising:
    5 - an exchanger body (3) defining an internal volume (5);
    - A plurality of longitudinal tubes (7) housed in the internal volume (5), provided for the circulation of a first fluid, at least a portion of the tubes (7) being juxtaposed transversely and forming a sheet of tubes falling between upper and lower planes (P1, P2), the tubes of said tube ply being separated from each other by circulation passages of a second fluid (19), at least the upper plane (P1) containing the directions longitudinal and transverse, the upper plane (P1) being directly opposite an upper part (27) of the exchanger body (3) and being separated from the latter by a gap (29);
    - a second fluid inlet (31) opening into the internal volume (5), formed in the upper part (27) of the exchanger body (3); and
    a member (35) for guiding the second fluid in the internal volume (5), comprising a deflector (39) having a transverse zone (41) closing at least partially the gap (29) between the upper part (27) and the upper plane (P1).
    [2" id="c-fr-0002]
    2. Heat exchanger according to claim 1, in which the guide member (35) comprises a grid for distributing the second fluid (37), disposed in the gap (29) between the upper part (27) and the upper plane (P1), opposite the second fluid inlet (31).
    [3" id="c-fr-0003]
    3. Heat exchanger according to claim 2, in which the distribution grid (37) extends substantially over the entire width of the sheet of tubes and has
    25 facing each passage (19) at least one hole (51), the second fluid inlet (31) being placed opposite at least one central passage (53) among the passages (19), the at least one hole (51) having a cross section increasing transversely from the at least one central passage (53).
    [4" id="c-fr-0004]
    4. Heat exchanger according to claim 2 or 3, wherein the
    30 deflector of the guide member (35) comprises teeth (43) engaged in the passages (19).
    [5" id="c-fr-0005]
    5. Heat exchanger according to claim 4, in which the distribution grid (37), the transverse zone (41) and the teeth (43) are made from one another with one another.
    [6" id="c-fr-0006]
    6- Heat exchanger according to claim 4, wherein the distribution grid (37), the transverse area (41) and the teeth (43) are formed in the same metal plate (49).
    [7" id="c-fr-0007]
    7. Heat exchanger according to any one of claims 4 to 6, wherein each tooth (43) extends transversely over the entire width of the passage (19) corresponding.
    [8" id="c-fr-0008]
    8. Heat exchanger according to any one of claims 4 to 7, wherein each passage (19) extends over a determined height in an elevation direction substantially perpendicular to the longitudinal and transverse directions, the tooth (43) corresponding extending over a height between 5% and 50% of said determined height.
    [9" id="c-fr-0009]
    9- heat exchanger according to claim 8, wherein at least one of the two tubes (7) framing said passage (19) has a rib (75) projecting into the passage (19), extending the tooth (43) according to the direction of elevation, the rib (75) preferably having interruptions (77).
    [10" id="c-fr-0010]
    10. A method of manufacturing a heat exchanger according to any one of claims 1 to 9, the manufacturing method comprising the following steps:
    - Formation of the guide member for the second fluid (35), by cutting and shaping a metal plate (49);
    - Positioning of the longitudinal tubes (7) and the guide member (35) in the exchanger body (3);
    - Attachment of the longitudinal tubes (7), the guide member (35) and the exchanger body (3) to each other.
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    同族专利:
    公开号 | 公开日
    DE102019119551A1|2020-01-30|
    KR20200011373A|2020-02-03|
    JP2020016237A|2020-01-30|
    KR102295272B1|2021-08-27|
    FR3084408B1|2021-09-17|
    US20200033074A1|2020-01-30|
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    法律状态:
    2019-07-26| PLFP| Fee payment|Year of fee payment: 2 |
    2020-01-31| PLSC| Search report ready|Effective date: 20200131 |
    2020-07-28| PLFP| Fee payment|Year of fee payment: 3 |
    2021-06-22| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1856830A|FR3084408B1|2018-07-24|2018-07-24|HEAT EXCHANGER AND CORRESPONDING MANUFACTURING PROCESS|FR1856830A| FR3084408B1|2018-07-24|2018-07-24|HEAT EXCHANGER AND CORRESPONDING MANUFACTURING PROCESS|
    DE102019119551.9A| DE102019119551A1|2018-07-24|2019-07-18|Heat exchanger and corresponding manufacturing process|
    KR1020190088605A| KR102295272B1|2018-07-24|2019-07-22|Heat exchanger and method of manufacturing same|
    JP2019135382A| JP2020016237A|2018-07-24|2019-07-23|Heat exchanger and corresponding manufacturing method|
    US16/519,402| US20200033074A1|2018-07-24|2019-07-23|Heat exchanger and corresponding manufacturing method|
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