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EP4023998B1 - Tube pour échangeur de chaleur - Google Patents

Tube pour échangeur de chaleur Download PDF

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Publication number
EP4023998B1
EP4023998B1 EP20461612.2A EP20461612A EP4023998B1 EP 4023998 B1 EP4023998 B1 EP 4023998B1 EP 20461612 A EP20461612 A EP 20461612A EP 4023998 B1 EP4023998 B1 EP 4023998B1
Authority
EP
European Patent Office
Prior art keywords
tube
fuse element
general plane
heat exchanger
fusible part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20461612.2A
Other languages
German (de)
English (en)
Other versions
EP4023998A1 (fr
Inventor
Dawid Szostek
Dariusz BUREK
Damian JURKIEWICZ
Lukasz WIDZYK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP20461612.2A priority Critical patent/EP4023998B1/fr
Publication of EP4023998A1 publication Critical patent/EP4023998A1/fr
Application granted granted Critical
Publication of EP4023998B1 publication Critical patent/EP4023998B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/0075—Supports for plates or plate assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/08—Fins with openings, e.g. louvers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements

Definitions

  • the invention relates to a tube for a heat exchanger.
  • the invention relates to a tube heat exchanger brazed to the walls of the housing.
  • WO 2019/145022 A1 for example discloses a tube for a heat exchanger according to the preamble of claim 1.
  • a power produced from naturally aspirated engines depends mostly on its efficiency and displacement. At the sea level, naturally aspirated engine is able to inhale only such amount of air, which is delivered by atmospheric force i.e. 1 bar. Moreover, atmospheric pressure decreases with elevation.
  • conventional engines can be easily upgraded in order to increase its performance, thermal efficiency and fuel economy.
  • charge air air is pressurized (herein referred to as the "charge air") by mechanical or electric compressors, known as superchargers or turbochargers.
  • power output becomes a function of how much air is delivered to the cylinders.
  • Most commonly used methods to put these compressors into action recapture energy from gas exhaust manifold through an expansion turbine, which pressurizes air delivered to the engine, or relay part of engine's power to motorize a supercharger, usually by a set of pulleys. Pressurizing the air leads to substantial increase of its temperature. Consequently, the density of the air decreases with temperature, because hot air is less dense than cold air.
  • the automotive industry like many other industrial fields, uses heat exchangers to ensure optimal temperature operating conditions for the engine.
  • charge air coolers can be divided into three types: air-cooled charge air coolers (ACAC), water-cooled charge air coolers (WCAC) and an assemblies that use air conditioning refrigerant for charge air cooling.
  • ACAC air-cooled charge air coolers
  • WCAC water-cooled charge air coolers
  • an assemblies that use air conditioning refrigerant for charge air cooling are favored by automotive manufacturers, due to its efficiency and small packaging.
  • Aluminum offers significant weight savings, and aluminum alloys also have good thermal and corrosion resistance.
  • the tubes of known heat exchangers are typically brazed to the housing of heat exchanger, i.e. joined by adding liquid metal to the metal parts to be joined. As these tubes are brazed over their entire surface in contact with the walls of housing, the metal thus added forms a continuous line.
  • thermomechanical stresses and chemical reactions are subjected to high and varied stresses during operational mode, such as thermomechanical stresses and chemical reactions with more or less aggressive environments.
  • thermal shocks caused by a sudden and significant change in temperature for example when opening valves equipped with sensors that measure engine temperature and allow cold engine cooling water to pass into the warmer engine air intake system.
  • thermal shocks lead to expansion/contraction phenomena of the tubes of heat exchanger, called thermal cycles.
  • Prior art heat exchanger tubes comprise a breakable tabs between the tube and the housing which are intended to crack during thermal cycle.
  • breakable tabs tend to form unpredictable shapes and structures which in most cases would cause collision between the housing and the tube, especially during expansion of the tubes. Such collision may lead to mechanical stress, and finally, to malfunction of the heat exchanger due to leakage.
  • the present invention therefore aims to compensate for the disadvantages of the previous art and to meet the above-mentioned constraints by proposing a tube for heat exchanger, simple in its design and in its operating mode, reliable and economical, which makes it possible to limit, or even avoid, the appearance in the tube of rupture zones linked to thermal shocks, and collision between the remaining elements of the breakable fuse element.
  • Another object of the present invention is such a tube for a heat exchanger providing a support on the opposite walls of the casing with a view to its assembly by brazing with a complementary tube to form a conduit for the circulation of a heat transfer fluid.
  • the present invention is also intended for a heat exchanger comprising at least one such tube for an exchanger, so as to present enhanced reliability.
  • the invention concerns a tube for a heat exchanger, said tube comprising a coupling edge to another tube.
  • said edge comprises at least one fusible part for assembling this coupling edge with at least one housing wall, said at least one fusible part being configured to be separated from the rest of said coupling edge by differential expansion/contraction between said tube and said at least one housing wall on which it is intended to be assembled.
  • the object of the invention is, among others, a tube for a heat exchanger comprising at least one fusible part for assembling with at least one wall of the heat exchanger, wherein the tube is a flat tube assembled of two half-plates so that it comprises two flat walls joined along at least two coupling edges, wherein the two coupling edges define a general plane, wherein the fusible part comprises a first fuse element, a second fuse element configured to be fixed to the wall of the heat exchanger, a decoupling zone situated between the first fuse element and the second fuse element, wherein said second fuse element is configured to be separated from the first fuse element by differential in expansion/contraction between said tube and said at least one wall to which it is intended to be fixed, the decoupling zone being configured to deviate the second fuse element relatively to a general plane of the tube, wherein the decoupling zone is distanced from the second fuse element.
  • the fusible part comprises at least two inflection, wherein the first fuse element comprises a first inflection, and the second fuse element comprises a second inflection.
  • the tube comprises at least one recessed section located on the corner area of the tube, in particular the recessed section being located between the coupling edge and the first fuse element.
  • the tube comprises a coupling edge configured to delimit the tube formed by two tubes assembled with each other with their respective opposite faces.
  • the coupling edges are intended to delimit a conduit for the circulation of a heat-transfer fluid within the tube.
  • the tube comprises a fluid inlet and a fluid outlet, each of the fluid inlet and outlet having a collar configured to provide a fluidal communication between tube and the manifold of the heat exchanger.
  • the tube is in one piece and made of a metallic material, such as aluminum or an aluminum alloy.
  • the fusible part slopes outwardly with respect to the general plane of the tube, so that the decoupling zone is shifted from the coupling edge of tube in a cross-section perpendicular to the general plane.
  • the fusible part slopes inwardly with respect to the general plane of the tube, so that the decoupling zone is shifted towards the coupling edge of tube in a cross-section perpendicular with respect to the general plane.
  • the second inflection is sloping in different direction than the first inflection.
  • At least a portion of the second fuse element is parallel with respect to the general plane of the tube.
  • At least a portion of the first fuse element is at an angle with respect to the general plane of the tube.
  • the second fuse element is greater than the first fuse element.
  • each of the two opposite corners of the tube comprises a fusible part.
  • the fusible part is half the thickness of the tube, wherein the thickness is measured in a direction perpendicular to the general plane of the tube.
  • the fusible part is thicker than half the thickness of the tube, wherein the thickness is measured in a direction perpendicular to the general plane of the tube.
  • the fusible part is thinner than half the thickness of the tube, wherein the thickness is measured in a direction perpendicular to the general plane of the tube.
  • Embodiments of the invention comprise a tube for a water charge air cooler (WCAC) which may be used in automotive industry.
  • the WCAC has evolved to stand out by showing up high efficiency with relatively compact packaging.
  • WCAC comprises other elements which allow to obtain desired efficiency, such as: sensors, charge air intake/ outtake of a specific shape and smoothness, electric throttle body which regulates the mass flow of air delivered to WCAC, and other.
  • Fig. 1 shows a perspective view of the heat exchanger 100 which may comprise a first wall 110, a second wall 120 and a third wall 130, wherein the first wall110 and the second wall 120 are aligned parallelly and spaced from each other, and the third wall 130 may be aligned perpendicularly with respect to the first 110 and the second 120 wall, so that the opposite edges of the third wall 130 are in contact with the first wall 110, as well as the second wall 120.
  • the heat exchanger 100 further comprises a manifold 140.
  • the manifold 140 may be located parallelly with respect to the third wall 130 and perpendicularly with respect to the first 110 and the second wall 120, so that, similarly to the third wall 130, the opposite edges of the manifold 140 are in contact with the first wall 110, as well as the second wall 120.
  • the walls 110, 120, 130 and the manifold 140 may be joined together, e.g. by brazing, so that these sub-components form an essentially rectangular fluid tight housing 150 which delimits a first conduit for a first fluid, e.g. charge air.
  • the housing 150 may further receive intake and outtake (not shown) for the first fluid on its open ends.
  • the exemplary first fluid flow direction from intake to outtake is depicted in Fig.1 by F in and F out , respectively.
  • a second conduit for a second fluid may be formed, inter alia, by the manifold 140, which may comprise an inlet spigot 148 and an outlet spigot 149 for delivering or collecting second fluid, e.g. coolant.
  • the exemplary second fluid flow direction from the inlet to the outlet is depicted in Fig. 1 by W in and W out , respectively.
  • the second conduit further comprises at least one tube 1 located within the housing 150.
  • Term “within” means, that the tube 1 does not protrude beyond the space delimited by the housing 150.
  • the tube 1 is aligned substantially in parallel with respect to the first wall 110 and he second wall 120 and in perpendicular to the manifold 150 and the third wall 130.
  • the tube 1 extends form the manifold 140 to the third wall 130, whereas it is fluidly connected only with the first of these sub-components.
  • the tube 1 is formed, so as to enable at least one U-turn at the path of the second fluid flowing there through.
  • the manifold 140 is configured to deliver and/or collect the second fluid to the tube 1 through two parallel channels formed therein.
  • the channels in the manifold 150 are formed as an unitary element with e.g. partition, however other means of providing channels for the second fluid are also envisaged.
  • the heat exchanger 100 may comprise a plurality of tubes 1 to improve the efficiency thereof.
  • the tubes 1 are stacked one on the other in a parallel manner, perpendicularly to the manifold 140, so that the second fluid is distributed as homogenously as possible.
  • the second fluid may flow through the inlet W in and it is directed to respective channel of the manifold 140 which feeds the tubes 1.
  • the second fluid flows through the U-shaped tube 1 back to the manifold 150 and then it is collected by the second fluid outlet W out .
  • the stack of tubes 1 may be interlaced with so-called turbulators or fins 160 .
  • the number of turbulators or fins 160 interlaced between the tubes 1 corresponds the free spaces in the vicinity of the tubes 1.
  • turbulators or fins 160 fill the spaces not occupied by other sub-components within the housing 140 in order to maximize the heat exchange efficiency and to reduce bypassing of the tubes 1 by the first fluid.
  • Fig. 2 shows the heat exchanger 100 with plurality of tubes 1 in accordance to prior art.
  • the turbulators or fins 160 are omitted for the sake of clarity.
  • the heat exchanger 100 may be oriented horizontally. Horizontal orientation of the heat exchanger 100 refers to horizontal direction of stacking of its tubes 1. Alternatively, the heat exchanger 100 could be oriented at any angle with respect to horizontal orientation as long as the first and second fluid are efficiently delivered to provide effective heat exchange between them.
  • each tube 1 may be formed out of two half-plates produced in the same process, wherein one half-plate is substantially a mirror image of the other to delimit the path for the circulation of a heat transfer fluid between these half-plates.
  • the tube may be the flat tube assembled of two half-plates so that it comprises two flat walls joined along at least two coupling edges.
  • the tube 1 may be a folded tube.
  • Fig. 2 further shows detailed section S1 of an assembly of the tube 1 with the housing 140.
  • the tubes 1 are stacked and spaced form each other in order to provide good efficiency of entire heat exchanger 100.
  • the heat exchanger 100 expands and contracts depending on the temperature of the first and the second fluid, as well as the temperature difference between them in different sections of the heat exchanger 100. Further, the different sub-components of the heat exchanger 100 may expand od contract to different extent, because the heat is not usually distributed evenly across all sub- components.
  • the tubes 1 may be initially, i.e. in a pre-operational mode, secured both to the manifold 140 and the third wall 130, yet it may be possible for the tubes 1 to be secured only the manifold 140.
  • Figs 3 and 4 show an isometric view of the standalone tube 1 and one of the corner areas of the same tube 1, accordingly.
  • Figs 3 and 4 show the first ascpectof the invention.
  • each tube 1 may have essentially rectangular shape, so that a general plane (P1) may be defined.
  • the general plane (P1) of the tube 1 could be defined along the contact area of two half-plates.
  • the general plane (P1) of the tube 1 runs parallelly and in-between the half-plates of particular tube 1.
  • the general plane (P1) may cross the median section the tube 1, so that the conduit for the first fluid in both sections thereof is split into two even halves.
  • the tube 1 may further comprise a coupling edge 11 for coupling two half-plates.
  • the coupling edge 11 may comprise at least one fusible part 20 for assembling coupling edge 11 with at least one wall of the heat exchanger, in particular the third wall 130 of the housing 150.
  • the tube 1 may comprise a fluid inlet 31 and a fluid outlet 32, as shown in Fig.3 .
  • Each of the fluid inlet 31 and fluid outlet 32 may comprise a collar configured to provide a fluid- tight connection between tube 1 and the manifold of the heat exchanger 100.
  • the tube 1 is fixed to the housing 150 with one end, and the other ought to be a free end during the operational mode of the heat exchanger 100, in order to allow expansion or contraction of the tube 1 within the housing 150.
  • Fig. 4 shows in detail a fragment of the same tube 1 as shown in Fig. 3 .
  • Fig. 4 shows one of the corer areas of the tube 1 which comprises the fusible part 20.
  • the fusible part 20 may further comprise a first fuse element 21, a second fuse element 22 configured to be fixed to the wall of the heat exchanger 100, a decoupling zone 23 situated between the first fuse element 21 and the second fuse element 22.
  • the second fuse element 22 is configured to be separated from the first fuse element 21 by differential in expansion/contraction between the tube 1 and at least one wall to which it is intended to be fixed, such as the third wall 130.
  • the decoupling zone 23 may be configured to deviate the second fuse element 22 relatively to a general plane (P1) of the tube 1, yet the decoupling zone 23 is distanced from the second fuse element 22.
  • Each coupling edge 11 may comprise at least one fusible part 20, whereas said fusible parts 20 may be arranged on the edges of the tubes 1 in such a way that, after assembly of the latter, two fusible parts 20 belonging to distinct half-plates of the tube 1 are placed opposite with respect to each other.
  • the fusible part 20 may be carried by a corner area of the tube 1 or by a portion of the coupling edge 11, close to this corner.
  • Fig. 4 shows at least one recessed section 19 which may be located on the corner area of the tube 1.
  • the recessed section 19 is made integrally with the fusible part 20 and it allows to form fusible part 20 easily, due to reduced material which helps to bend or deviate the material.
  • Fig. 5 shows a side view of the tube 1 assembled out of two half-plates.
  • the general plane (P1) is depicted as the straight line, because the tube 1 in Fig. 5 is shown parallelly thereto. In other words, the general plane (P1) is shown in parallel to viewer's perspective.
  • the first fuse element 21 may protrude from the coupling edge 11 towards the third wall 130.
  • the first fuse element 21 protrudes form the coupling edge 11 in a direction which is at an angle with respect to the general plane (P1) of the tube 1.
  • the fusible part 20 with the first fuse element 21 may be aligned with respect to the general plane (P1) of the plate 1 at an angle between 0 and 90 degrees.
  • the angle between the first fuse element 21 and the general plane (P1) of the plate 1 is between 30 and 60 degrees.
  • the angle between the first fuse element 21 and the general plane (P1) of the plate 1 may be exactly 45 degrees.
  • the second fuse element 22 may be located on the outermost portion of the tube 1 and it enables to form the firm connection by e.g. brazing with the third wall 130.
  • the second fuse element 22 may be secured parallelly to the third wall 130, and substantially in perpendicular with respect to the general plane (P1) of the tube 1.
  • the second fuse element 22 is bigger than the first fuse element, so that its surface contacting the third wall 130 of the housing 150 may be sufficient to avoid decoupling the second fuse element 22 from the housing 150 during the operational mode of the heat exchanger 100.
  • the fusible part 20 further comprises the decoupling zone 23 located between the first fuse element 21 and the second fuse element 22.
  • the decoupling zone may be connecting the first fuse element 21 with the second fuse element 22 during pre-operational mode of the heat exchanger 100, for example, during assembling the heat exchanger 100, during transportation thereof, etc.
  • the decoupling zone 23 is intended to separate the first fuse element 21 and the second fuse element 22.
  • the process of separation these two elements is due to heat expansion and/or contraction of the sub-components of heat exchanger 100 during its operational mode. Consequently, the heat exchanger 100 comprises a free end of the tube 1 localized transversely to the manifold 140. This may avoid fracturing of the tube 1 during the operational mode of the heat exchanger 100 due the thermal expansion or contraction of the material.
  • the decoupling zone 23 may be in a form of an area of weakened material, for example at least one decoupling incision located between the first fuse element 21 and the second fuse element 22.
  • at least one decoupling incision located between the first fuse element 21 and the second fuse element 22.
  • other ways of providing the decoupling zone 23 which would allow to achieve the same effect are also envisaged.
  • the first fuse element 21 may comprise a first inflection 25.
  • the second fuse element 22 may comprise a second inflection 26.
  • the fusible element 20 may comprise at least one third inflection 27 located between the first inflection 25 and the second inflection 26.
  • the inflection 25, 26, 27 may be defined as the portion of the fusible part 20 which slopes away or towards the general plane (P1) of the tube 1, so that the decoupling zone 23 does not overlap the coupling edge 11 of tube 1 in a cross-section perpendicular with respect to the general plane (P1).
  • the inflection 25, 26, 27 is configured to deviate the fusible part 20 relatively to the general plane (P1) of the tube 1.
  • the fusible part 20 comprises two inflections.
  • the fusible part 20 comprises the first inflection 25 and the second inflection 26, whrein the portions of the first fuse element 21 and the second fuse element 22 form a straight portion.
  • the decoupling element 23 may thus be located on this straight portion.
  • the fusible part 20 may further comprise, the third inflection 27.
  • the third inflection 27 may be connecting a flat portion of the second fuse element 22, wherein this flat portion is substantially parallel with respect to the general plane (P1) of the tube 1, and the first fuse element 21 sloping at an 30-60 degree angle relatively to the general plane (P1) of the tube 1, as shown in Fig. 6 .
  • the third inflection 27 may be connecting a sloping portion of the second fuse element 22, wherein this sloping portion is at an 0-30 degree angle relatively to the general plane (P1) of the tube 1, and the first fuse element 21 sloping at an 30-60 degree angle relatively to the general plane (P1) of the tube 1, as shown in Fig. 7 .
  • the shape of the fusible part 20 depicted in Fig. 7 may thus be referred as to chicaning.
  • the second fuse element 22 may be configured to be separated from the first fuse element 21 by differential in expansion or contraction between the tube 1 and at least one wall on which it is intended to be assembled, such as the third wall 130.
  • the stress put between the tubes 1 and the housing 150 allows the decoupling zone 23 to separate the first fuse element 21 from the second fuse element 22. Consequently, the first fuse element 21 is integral with the tube 1 and the second fuse element 22 is integral with the housing 150, in particular the third wall 130.
  • the fusible part 20 may be half the thickness of the tube 1, wherein the thickness is measured in a direction perpendicular to the general plane (P1) of the tube 1.
  • P1 general plane
  • each fusible part 20 protruding from one corner area is of the same thickness as the half-plate from which it protrudes from.
  • the fusible part 20 protruding from one corner area of the tube 1 is thicker than the half-plate from which it protrudes from.
  • the fusible part 20 protruding from one corner area of the tube 1 is thinner than the half-plate from which it protrudes from.
  • the decoupling zone 23 allows the second fuse element 22 be separated from the first fuse element 21 in such a way, that during the operational mode of the heat exchanger 100, the tube 1 does not collide with the housing 150 or the contact between these elements is very gentle. This allows to significantly improve the thermal resistance of the whole heat exchanger 100.
  • those skilled in the art could, for example, increase the size of the housing 150 in the direction parallel to the general plane (P1) of the tube 1, so that the tubes can expand and contract freely, yet it would create several problems, such as increased packaging, reduced thermal efficiency of the heat exchanger, and other.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (14)

  1. Tube (1) pour un échangeur de chaleur (100) comprenant au moins une partie de fusible (20) pour un assemblage avec au moins une paroi de l'échangeur de chaleur (100), dans lequel le tube (1) est un tube plat assemblé de deux demi-plaques de sorte qu'il comprend deux parois plates jointes le long d'au moins deux bords de couplage (11), dans lequel les deux bords de couplage (11) définissent un plan général (P1), dans lequel la partie de fusible (20) comprend un premier élément fusible (21), un second élément fusible (22) configuré pour être fixé à la paroi de l'échangeur de chaleur (100), une zone de découplage (23) située entre le premier élément fusible (21) et le second élément fusible (22), dans lequel ledit second élément fusible (22) est configuré pour être séparé du premier élément fusible (21) par différentiel de dilatation/contraction entre ledit tube (1) et ladite au moins une paroi à laquelle il est destiné à être fixé, la zone de découplage (23) étant configurée pour écarter le second élément fusible (22) par rapport à un plan général (P1) du tube (1), dans lequel la zone de découplage (23) est éloignée du second élément fusible (22), caractérisé en ce que la partie de fusible (20) comprend au moins deux inflexions, dans lequel le premier élément fusible (21) comprend une première inflexion (25), et le second élément fusible (22) comprend une seconde inflexion (26), lesdites inflexions (25, 26) étant définies comme la partie de la partie de fusible (20) qui est inclinée en s'éloignant ou en direction du plan général (P1) du tube (1).
  2. Tube (1) selon la revendication précédente comprenant au moins une section évidée (19) située sur la zone d'angle du tube (1), en particulier la section évidée étant située entre le bord de couplage (11) et le premier élément fusible (21).
  3. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel le bord de couplage (11) est configuré pour délimiter le tube (1) formé par deux plaques assemblées l'une avec l'autre avec leurs faces opposées respectives.
  4. Tube (1) pour un échangeur de chaleur (100) selon l'une quelconque des revendications précédentes, dans lequel les bords de couplage (11) sont destinés à délimiter un conduit pour la circulation d'un fluide de transfert de chaleur à l'intérieur du tube (1).
  5. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel ledit tube (1) comprend une entrée de fluide (31) et une sortie de fluide (32), chacune de l'entrée de fluide et de la sortie de fluide ayant un collier configuré pour fournir une étanchéité au fluide entre le tube (1) et le collecteur de l'échangeur de chaleur (100).
  6. Tube (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit tube (1) est d'un seul tenant et constitué d'un matériau métallique, tel que de l'aluminium ou un alliage d'aluminium.
  7. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel la partie de fusible (20) est inclinée vers l'extérieur par rapport au plan général (P1) du tube (1), de sorte que la zone de découplage (23) est décalée du bord de couplage (11) du tube (1) dans une section transversale perpendiculaire au plan général (P1).
  8. Tube (1) selon l'une quelconque des revendications 1 à 6, dans lequel la partie de fusible (20) est inclinée vers l'intérieur par rapport au plan général (P1) du tube (1), de sorte que la zone de découplage (23) est décalée vers le bord de couplage (11) du tube (1) dans une section transversale perpendiculaire par rapport au plan général (P1).
  9. Tube (1) selon les revendications 7 ou 8, dans lequel la seconde inflexion (26) est inclinée dans une autre direction que la première inflexion (25).
  10. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel au moins une partie du second élément fusible (22) est parallèle par rapport au plan général (P1) du tube (1) .
  11. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel au moins une partie du premier élément fusible (21) est inclinée par rapport au plan général (P1) du tube (1) .
  12. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel le second élément fusible (22) est plus grand que le premier élément fusible (21).
  13. Tube (1) selon l'une quelconque des revendications précédentes, dans lequel chacun des deux angles opposés du tube (1) comprend une partie de fusible (20).
  14. Tube (1) pour un échangeur de chaleur (100) selon l'une quelconque des revendications précédentes, dans lequel la partie de fusible (20) correspond à la moitié de l'épaisseur du tube (1), dans lequel l'épaisseur est mesurée dans une direction perpendiculaire au plan général (P1) du tube (1).
EP20461612.2A 2020-12-30 2020-12-30 Tube pour échangeur de chaleur Active EP4023998B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20461612.2A EP4023998B1 (fr) 2020-12-30 2020-12-30 Tube pour échangeur de chaleur

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Application Number Priority Date Filing Date Title
EP20461612.2A EP4023998B1 (fr) 2020-12-30 2020-12-30 Tube pour échangeur de chaleur

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EP4023998A1 EP4023998A1 (fr) 2022-07-06
EP4023998B1 true EP4023998B1 (fr) 2024-11-20

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869680B1 (fr) * 2004-04-29 2006-07-28 Valeo Thermique Moteur Sas Echangeur de chaleur a plaques
DE102015011368B4 (de) * 2015-08-28 2022-11-24 Modine Manufacturing Company Wärmetauscher, dessen Herstellungsverfahren sowie ein elastisches Umfangselement
CN111886470B (zh) * 2018-01-23 2022-06-28 法雷奥热系统公司 热交换器板以及包括该板的热交换器

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