EP4023991A1 - Röhre für einen wärmetauscher - Google Patents

Röhre für einen wärmetauscher Download PDF

Info

Publication number
EP4023991A1
EP4023991A1 EP20461614.8A EP20461614A EP4023991A1 EP 4023991 A1 EP4023991 A1 EP 4023991A1 EP 20461614 A EP20461614 A EP 20461614A EP 4023991 A1 EP4023991 A1 EP 4023991A1
Authority
EP
European Patent Office
Prior art keywords
tube
fuse element
heat exchanger
notch
general plane
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.)
Pending
Application number
EP20461614.8A
Other languages
English (en)
French (fr)
Inventor
Dawid Szostek
Dariusz BUREK
Michal BELZOWSKI
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 EP20461614.8A priority Critical patent/EP4023991A1/de
Publication of EP4023991A1 publication Critical patent/EP4023991A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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.
  • 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.
  • superchargers or turbochargers In the forced induction engines, 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.
  • 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.
  • the breakable tabs tend to break irregularly, so that the fracture zone is difficult to predict.
  • the uneven parts of the tab may lead to collision between sub-components. Such collision may lead to mechanical stress, and finally, to malfunction of the heat exchanger due to leakage.
  • the breakable tabs need relatively high stress level to break. Consequently, the breakable tabs of the tubes subjected to greater stress break quicker than the ones being subjected to relatively lower stress at the same time. This may lead to tube cracking in an undesired areas so that the leaks occur.
  • 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 or unpredictable and uncontrollable breaking of the tabs.
  • 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 protrudes from a coupling edge, characterised in that the fusible part comprises a first fuse element adjacent to the coupling edge, 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, the decoupling zone comprising a first side parallel to at least one flat wall and a second side perpendicular to the first side, 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, wherein the decoupling zone further comprises at least one notch located on the first side
  • the decoupling zone is 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 notch extends parallelly to the general plane of the tube.
  • the tube is formed by a first plate and a second plate assembled with each other with their respective opposite faces.
  • the plates comprise coupling edges configured to delimit a conduit for the circulation of a heat-transfer fluid within the tube.
  • the first plate comprises a first notch and the second plate comprises a second notch .
  • the first notch and the second notch are located symmetrically with respect to the general plane.
  • the first notch and the second notch are located asymmetrically with respect to the general plane.
  • the decoupling zone comprises at least one indent located on the second side thereof configured to further facilitate separation of the second fuse element from the first fuse element.
  • said tube comprises a fluid inlet and a fluid outlet, each of the fluid inlet and outlet having a collar configured to provide a fluid- tight connection 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.
  • 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 visible in Fig.1 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 1 may be the flat tube assembled of two half-plates so that it comprises two flat walls joined along at least two coupling edges 11, as shown in Fig. 3 .
  • 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.
  • Fig. 3 shows a perspective view of the standalone tube 1.
  • 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 half- plate of the same tube 1 as shown in Fig. 3 .
  • Fig. 4 shows the half-plate comprising the coupling edge which may be used to form the tube 1 which comprises the fusible part 20.
  • the fusible part 20 may comprise a first fuse element 21 adjacent to the coupling edge 11, a second fuse element 22 configured to be fixed to the wall of the heat exchanger 100, and a decoupling zone 23 situated between the first fuse element 21 and the second fuse element 22.
  • the decoupling zone 23 may comprise a first side parallel to at least one flat wall and a second side perpendicular to the first side. Referring to Figs 1 and 2 , the first side of the decoupling zone 23 may be perpendicular to the direction of stacking of the tubes 1. Referring to Figs 3 , 5 and 6 , the first side of each half-plate may be parallel to the general plane (P1). It is to be noted that the flat wall of the half-plate is substantially parallel to the general plane (P1).
  • Term “side” may to refer to flat surface of the fuse element 20 of individual half- plate which delimits the decoupling zone 23 relatively to the direction of its extension and relatively to the orientation of the half- plate.
  • the second fuse element 22 may be 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 is essentially parallel to the general plane (P1) of the tube 1.
  • 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. 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 may protrude from the coupling edge 11 in a direction which is parallel with respect to the general plane (P1) of the tube 1, as shown in Fig. 5 .
  • the first fuse element 21 may protrude from the coupling edge 11 in a direction which is at an angle with respect to the general plane (P1) of the tube 1.
  • 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 may further comprise the decoupling zone 23 located between the first fuse element 21 and the second fuse element 22.
  • the decoupling zone 23 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 comprise at least one notch 99.
  • the notch 99 may be located on the first side of the decoupling zone 23.
  • the first side of the decoupling zone 23 may extend substantially in a direction parallel to the flat wall of the half-plate or to the general plane (P1) of the tube 1.
  • the second side of the decoupling zone 23 may extend in a direction substantially perpendicular to the first side. It means that if the fusible part 20 comprises any bends or inclinations, the second side of the decoupling zone 23 should be measured relatively to the orientation of the fusible part 20, not the whole tube 1.
  • the notch 99 may thus be configured to facilitate separation of the second fuse element 22 from the first fuse element 21.
  • the notch 99 may be formed by incision in the surface of the tube 1 or by any means that will ensure proper functionality thereof.
  • the notch 99 may extend through the decoupling element 23 from one edge to another along the shortest path. However, the notch 99 may also extend obliquely, even if the shortest path through the decoupling zone is available.
  • the decoupling zone 23 may further comprise at least one indent 98 located on the second side being substantially parallel to the first side of the decoupling zone 23.
  • the indent 98 is configured to further facilitate separation of the second fuse element 22 from the first fuse element 21 by being located in the vicinity of the notch 99.
  • the decoupling zone may comprise the indent 98 only.
  • the notch 99 and/or the indent 98 may be in a form of a cutout in an essentially triangular shape.
  • the shape of the triangle is the easiest in terms of production feasibility, however, other shapes of the notch 99, for example, semicircular are also envisaged.
  • the notch 99 may extend parallelly to the general plane (P1) of the tube 1.
  • the tube 1 may be formed by two half-plates.
  • a first plate 201 and a second plate 202 may be assembled with each other with their respective opposite faces.
  • Such tube 1 may further comprise coupling edges 11 configured to delimit a conduit for the circulation of a heat-transfer fluid within the tube 1.
  • the first plate 201 may comprise a first notch 99a and the second plate 202 may comprise a second notch 99b.
  • the first notch 99a and the second notch 99b may be located symmetrically with respect to the general plane (P1) of the tube 1.
  • P1 general plane
  • the strength of the decoupling zone 23 may be controlled by location of the first notch 99a with respect to the second notch 99b.
  • notch 99a and the second notch 99b may located symmetrically with respect to the general plane (P1) of the tube 1.
  • Term "symmetrically” or “asymmetrically refers to axis which may formed by the notches 99a and 99b. If the notches 99a and 99b are located symmetrically, their axis may form one, mutual axis for both of notches 99a and 99b so that the decoupling zone 23 is as thin as possible, thus the fuse elements 21 and 22 may be easily separated. If the notches 99a, 99b are located asymmetrically, as shown in Fig. 6 , they may form two respective axis which do not overlap to form one, mutual axis for both notches 99a and 99b. Thus, the distance between the notches 99a and 99b is increased, so that the decoupling zone 23 is stronger than in previous example.
  • Another way to control the strength of the decoupling zone 23 is by providing different shape of depth between the corresponding notches 99a and 99b.
  • the first notch 99a may penetrate deeper towards the median portion of the first plate than the second notch 99b. Consequently, the strength of the decoupling zone 23 may be controlled.
  • the notches 99a and 99b may be of different shapes and sizes. If the notches 99a and 99b have the triangular form, it may be preferred that the angle between the cutouts forming each triangular form is between 30-120 degrees, in particular 90 degrees.
  • first fuse element 21 and/ or the second fuse element 22 may comprise a first inflections.
  • the inflections 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 inflections may be configured to deviate the fusible part 20 relatively to the general plane (P1) of the tube 1.
  • 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 with at least one notch 99 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 is quickly separated from the housing 150 in a desired place. This allows to significantly improve the thermal resistance of the whole heat exchanger 100.

Landscapes

  • 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)
EP20461614.8A 2020-12-30 2020-12-30 Röhre für einen wärmetauscher Pending EP4023991A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20461614.8A EP4023991A1 (de) 2020-12-30 2020-12-30 Röhre für einen wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20461614.8A EP4023991A1 (de) 2020-12-30 2020-12-30 Röhre für einen wärmetauscher

Publications (1)

Publication Number Publication Date
EP4023991A1 true EP4023991A1 (de) 2022-07-06

Family

ID=74004114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20461614.8A Pending EP4023991A1 (de) 2020-12-30 2020-12-30 Röhre für einen wärmetauscher

Country Status (1)

Country Link
EP (1) EP4023991A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016049776A1 (en) * 2014-10-03 2016-04-07 Dana Canada Corporation Heat exchanger with self-retaining bypass seal
WO2019145022A1 (fr) * 2018-01-23 2019-08-01 Valeo Systemes Thermiques Plaque pour échangeur de chaleur et échangeur de chaleur comprenant une telle plaque

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016049776A1 (en) * 2014-10-03 2016-04-07 Dana Canada Corporation Heat exchanger with self-retaining bypass seal
WO2019145022A1 (fr) * 2018-01-23 2019-08-01 Valeo Systemes Thermiques Plaque pour échangeur de chaleur et échangeur de chaleur comprenant une telle plaque

Similar Documents

Publication Publication Date Title
US8002022B2 (en) Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles
US8020610B2 (en) Exhaust gas heat exchanger and method of operating the same
US8720199B2 (en) Heat exchanger, exhaust gas recirculation system, charge air supply system, and use of the heat exchanger
EP3161403B1 (de) Wärmetauscher mit verstärkter kopfplatte
EP1996891B1 (de) Wärmetauscher für agr-gas
US10697706B2 (en) Heat exchanger
JP2015534030A (ja) 熱交換器
US6513582B2 (en) Heat exchanger and fluid pipe therefor
JP2009516122A (ja) 内燃機関用熱交換器
JP2007515613A (ja) 複合流体熱交換器及びそれの製造方法
EP3587990B1 (de) Sammelkasten für wärmetauscher mit thermischer entkopplung
WO2007005479A1 (en) Heat exchanger with dimpled tube surfaces
WO2008133834A1 (en) Bi-material corrosive resistant heat exchanger
US20070261837A1 (en) Compact high temperature heat exchanger, such as a recuperator
WO2007050461A1 (en) Heat exchanger assembly for a charge air cooler
EP4023991A1 (de) Röhre für einen wärmetauscher
JP2013160469A (ja) 熱交換器
EP4023998A1 (de) Röhre für einen wärmetauscher
CN113383205A (zh) 换热器
EP4023990A1 (de) Röhre für einen wärmetauscher
EP3719431A2 (de) Ladeluftkühler
CN109696070B (zh) 热交换器
EP4166767B1 (de) Wärmetauscher
EP4012317B1 (de) Wasserladeluftkühler
JP3054888U (ja) プレートフィン型熱交換器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230103

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230528

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20231002