EP2909562B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP2909562B1
EP2909562B1 EP13783291.1A EP13783291A EP2909562B1 EP 2909562 B1 EP2909562 B1 EP 2909562B1 EP 13783291 A EP13783291 A EP 13783291A EP 2909562 B1 EP2909562 B1 EP 2909562B1
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EP
European Patent Office
Prior art keywords
edge
height
recess
heat exchanger
region
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EP13783291.1A
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German (de)
French (fr)
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EP2909562A1 (en
Inventor
Jürgen Kaiser
Boris Kerler
Alexander Meiser
Wael Nassar
Martin Paarmann
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Mahle International GmbH
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Mahle International GmbH
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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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators

Definitions

  • the present invention relates to a heat exchanger for heat exchange between a first fluid and a second fluid.
  • WO 2008/071362 A1 is a generic heat exchanger, for example in the manner of a radiator, known, comprising a block for the separate and heat exchange guidance of the two fluids, which has a number of first fluid flowed through flat tubes with a narrow pipe side and a pipe broadside.
  • the flat tubes terminate each longitudinal end in a bottom of a box, the flat tubes are guided through corresponding through holes in the ground in the box.
  • Each of the through holes in the bottom has a the corresponding flat tube bordering and erected edge, the edge broadsides are usually higher than the edges of narrow sides and merge into one another via a corresponding inclination.
  • the present invention therefore deals with the problem of providing a heat exchanger of the generic type an improved embodiment, which is characterized in particular by a longer service life.
  • the present invention is based on the general idea, in the region of an inclination, over which a broad side edge merges into a lower edge narrow side, to provide a particular rounded recess whose height is smaller than that of the narrow edge side, whereby the stresses in the corners of the flat tubes, the are bordered by the respective edge of the passage opening, reduced by about 14% and the life can be increased by about 50%.
  • the heat exchanger according to the invention is constructed as follows: It has a block for the separate and heat exchanging guidance of a first and a second fluid, said block having a number of first fluid flowed through flat tubes with a narrow pipe side and a pipe broadside.
  • the flat tubes are introduced via corresponding through holes in a bottom in a box and fluidly connected thereto.
  • Each of these through holes has an associated edge of the associated flat tube and erected, wherein the marginal broad sides of this edge are higher than the narrow edges and merge into one another via a corresponding inclination.
  • the recess is now provided in the region of this inclination, in particular in a corner region, whose height is less than that of the edge narrow side and which leads to the voltage reduction described above.
  • a contact surface edge of a contact surface between the edge and the flat tube in the region of the recess has a lower height than in the region of the edge narrow side. This contributes significantly to reduce the stresses occurring in the corner region of the flat tube.
  • the provision of this recess has led in a surprising manner to a significant decrease in the voltage and thus to a significant increase in the life of the heat exchanger.
  • the height of the particular rounded recess corresponds to about half the height of the edge broadside.
  • the height of the edge broadside may for example be about 7 mm, in which case the height of the recess is about 3.5 mm. This information is particularly conceivable for common heat exchangers, as used for example as coolers in motor vehicles.
  • a heat exchanger 1 for heat exchange between a first and a second fluid, for example for heat exchange between air and coolant, a block 2 for the separate and heat exchanging guidance of the two fluids, a number of the first fluid flowed through flat tubes 3 with a narrow side pipe 4 and a pipe broadside 5 has.
  • the flat tubes 3 are via corresponding passage openings 6 (compare also the FIGS. 2 and 3 ) guided in a bottom 7 in a box 8 and thereby fluidly connected thereto.
  • Each of the passage openings 6 has an associated edge tube 9 enclosing and erected edge 9, the edge broad sides 10 are higher than the narrow edges 11 and pass over a corresponding inclination 12 into each other (see in particular FIG.
  • a rounded recess 13 is now provided in the region of this slope 12, the height h 1 is less than the height h 2 of the narrow edge 11 and of course less than the height h 3 of the edge broadside 10.
  • a voltage in a bordered by the edge 9 flat tube 3 clearly, for example, by 14%, can be reduced, whereby the life of the heat exchanger 1 can be increased by almost 50%.
  • the height h 1 of the rounded-out recess 13 preferably corresponds to approximately half the height h 3 of the edge broadside, so that, for example, at a height h 3 of approximately 7 mm, the height h 1 of the recess 13 is approximately 3.5 mm.
  • the recess 13 is located directly on the edge narrow side 11 and then goes over the slope 12 in the edge broadside 10 via.
  • FIG. 4a and 4b so there is a heat exchanger 1 'according to the prior art, for example according to the DE 10 2011 075 071 A1 , shown in which on the edge narrow side 11 'of the edge 9' is bent outwards.
  • a contact surface edge 14 'between the edge 9' and the flat tube 3 'on the narrow side 11' at the same height h, as in the area of the rounded recess 13 ', as shown in FIG Fig. 4b is shown.
  • the contact surface edge 14 ' is drawn here interrupted and represents an edge of a contact surface 16' between the edge 9 'and the flat tube 3'.
  • the height h 4 of the contact surface edge 14 in the region of the narrow edge 11 ' thus corresponds to the height h 5 of the contact surface edge 14 'in the region of the recess 13'.
  • the contact surface edge 14 in the region of the recess 13 likewise has a fillet 15 analogous to this, which contributes substantially to reducing the stresses occurring in the corner region of the flat tube 3. This is very vivid in Fig. 5b , but also in Fig. 5a shown. It can be clearly seen that the contact surface edge 14 extends in the region of the recess 13 below the contact surface edge 14 in the region of the edge narrow side 11.
  • the contact surface 16 is correspondingly excluded in the region of the recess 13.
  • the contact surface edge 14 thus has a smaller height h 5 in the region of the recess 13 than in the region of the narrow edge 11, that is, the height h 4 of the contact surface edge 14 in the region of the narrow edge 11 is greater than in the region of the recess thirteenth
  • the height h 4 of the contact surface edge 14 is also smaller in the region of the edge narrow side 11 than the height h 3 of the edge 9 in the region of the edge broadside 10. The same applies to the height h 5 of the contact surface edge 14 in the region of the recess 13th
  • the edge 9 in the corner region that is, in the region of the recess 13 have a reduced wall thickness.

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

Description

Die vorliegende Erfindung betrifft einen Wärmetauscher zum Wärmetausch zwischen einem ersten Fluid und einem zweiten Fluid.The present invention relates to a heat exchanger for heat exchange between a first fluid and a second fluid.

Dokument WO 2012 150237 (Stand der Technik nach Art. 54(3) EPÜ) ist der nächstliegende Stand der Technik. Dieses Dokument zeigt auch einen Wärmetauscher zum Wärmetausch zwischen einem ersten Fluid und einem zweiten Fluid,

  • mit einem Block zur getrennten und wärmetauschenden Führung der bei den Fluide, der eine Anzahl vom ersten Fluid durchströmte Flachrohre mit einer Rohrschmalseite und einer Rohrbreitseite aufweist,
  • mit einem einen Boden aufweisenden Kasten, wobei die Flachrohre über entsprechende Durchgangsöffnungen im Boden in den Kasten geführt sind,
  • wobei jede Durchgangsöffnung mindestens einen das zugehörige Flachrohr einfassenden und aufgestellten Rand aufweist,
  • wobei die Randbreitseiten höher sind als die Randschmalseiten und über eine entsprechende Neigung ineinander übergehen, wobei
  • dass im Bereich der Neigung eine Ausnehmung vorgesehen ist, deren Höhe geringer ist als die Höhe der Randschmalseite.
document WO 2012 150237 (Prior art according to Art. 54 (3) EPC) is the closest prior art. This document also shows a heat exchanger for exchanging heat between a first fluid and a second fluid,
  • with a block for the separate and heat-exchanging guidance of the fluids, which has a number of flat tubes with a narrow pipe side and a pipe broadside, through which a number of fluids flow,
  • with a bottomed box, wherein the flat tubes are guided through corresponding through holes in the bottom of the box,
  • each through-opening having at least one edge enclosing and erecting the associated flat tube,
  • wherein the marginal broad sides are higher than the marginal narrow sides and merge into one another via a corresponding inclination, wherein
  • a recess is provided in the region of the inclination whose height is less than the height of the edge narrow side.

Aus der WO 2008/071362 A1 ist ein gattungsgemäßer Wärmetauscher, beispielsweise in der Art eines Kühlers, bekannt, mit einem Block zur getrennten und wärmetauschenden Führung der beiden Fluide, der eine Anzahl vom ersten Fluid durchströmte Flachrohre mit einer Rohrschmalseite und einer Rohrbreitseite aufweist. Die Flachrohre enden jeweils längsendseitig in einem Boden eines Kastens, wobei die Flachrohre über entsprechende Durchgangsöffnungen im Boden in den Kasten geführt sind. Jede der Durchgangsöffnungen im Boden besitzt dabei einen das zugehörige Flachrohr einfassenden und aufgestellten Rand, wobei die Randbreitseiten üblicherweise höher sind als die Randschmalseiten und über eine entsprechende Neigung ineinander übergehen.From the WO 2008/071362 A1 is a generic heat exchanger, for example in the manner of a radiator, known, comprising a block for the separate and heat exchange guidance of the two fluids, which has a number of first fluid flowed through flat tubes with a narrow pipe side and a pipe broadside. The flat tubes terminate each longitudinal end in a bottom of a box, the flat tubes are guided through corresponding through holes in the ground in the box. Each of the through holes in the bottom has a the corresponding flat tube bordering and erected edge, the edge broadsides are usually higher than the edges of narrow sides and merge into one another via a corresponding inclination.

Nachteilig bei dem bekannten Wärmetauscher ist jedoch, dass sich aufgrund der hohen Temperaturdifferenzen Spannungen im Bereich der Neigung zwischen der Randbreitseite und der Randschmalseite am Boden des Wärmetauschers ergeben, die sich nachteilig auf die Lebensdauer des Wärmetauschers auswirken.A disadvantage of the known heat exchanger, however, that arise due to the high temperature differences stresses in the range of inclination between the edge broad side and the narrow side edge at the bottom of the heat exchanger, which adversely affect the life of the heat exchanger.

Die vorliegende Erfindung beschäftigt sich daher mit dem Problem, für einen Wärmetauscher der gattungsgemäßen Art eine verbesserte Ausführungsform anzugeben, die sich insbesondere durch eine längere Lebensdauer auszeichnet.The present invention therefore deals with the problem of providing a heat exchanger of the generic type an improved embodiment, which is characterized in particular by a longer service life.

Dieses Problem wird erfindungsgemäß durch den Gegenstand des unabhängigen Anspruchs gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matter of the independent claim. Advantageous embodiments are the subject of the dependent claims.

Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, im Bereich einer Neigung, über welche eine Randbreitseite in eine niedere Randschmalseite übergeht, eine insbesondere ausgerundete Ausnehmung vorzusehen, deren Höhe geringer ist als diejenige der Randschmalseite, wodurch die Spannungen im Bereich der Ecken der Flachrohre, die vom jeweiligen Rand der Durchgangsöffnung umrandet sind, um ca. 14 % reduziert und die Lebensdauer um ca. 50 % erhöht werden können. Generell ist dabei der erfindungsgemäße Wärmetauscher wie folgt aufgebaut: Er besitzt einen Block zur getrennten und wärmetauschenden Führung eines ersten und eines zweiten Fluides, wobei dieser Block eine Anzahl vom ersten Fluid durchströmte Flachrohre mit einer Rohrschmalseite und einer Rohrbreitseite besitzt. Die Flachrohre sind dabei über entsprechende Durchgangsöffnungen in einem Boden in einen Kasten eingeführt und fluidisch mit diesem verbunden. Jede dieser Durchgangsöffnungen weist einen das zugehörige Flachrohr einfassenden und aufgestellten Rand auf, wobei die Randbreitseiten dieses Randes höher sind als die Randschmalseiten und über eine entsprechende Neigung ineinander übergehen. Erfindungsgemäß ist nun im Bereich dieser Neigung, insbesondere in einem Eckbereich, die Ausnehmung vorgesehen, deren Höhe geringer ist als die der Randschmalseite und die zu der zuvor beschriebenen Spannungsreduzierung führt. Zusätzlich weist ein Kontaktflächenrand einer Kontaktfläche zwischen dem Rand und dem Flachrohr im Bereich der Ausnehmung eine geringere Höhe auf als im Bereich der Randschmalseite. Dies trägt wesentlich dazu bei, die im Eckbereich des Flachrohres auftretenden Spannungen zu reduzieren. Das Vorsehen dieser Ausnehmung hat in überraschender Weise zu einer deutlichen Abnahme der Spannung und damit zu einem deutlichen Anstieg der Lebensdauer des Wärmetauschers geführt.The present invention is based on the general idea, in the region of an inclination, over which a broad side edge merges into a lower edge narrow side, to provide a particular rounded recess whose height is smaller than that of the narrow edge side, whereby the stresses in the corners of the flat tubes, the are bordered by the respective edge of the passage opening, reduced by about 14% and the life can be increased by about 50%. In general, the heat exchanger according to the invention is constructed as follows: It has a block for the separate and heat exchanging guidance of a first and a second fluid, said block having a number of first fluid flowed through flat tubes with a narrow pipe side and a pipe broadside. The flat tubes are introduced via corresponding through holes in a bottom in a box and fluidly connected thereto. Each of these through holes has an associated edge of the associated flat tube and erected, wherein the marginal broad sides of this edge are higher than the narrow edges and merge into one another via a corresponding inclination. According to the invention, the recess is now provided in the region of this inclination, in particular in a corner region, whose height is less than that of the edge narrow side and which leads to the voltage reduction described above. In addition, a contact surface edge of a contact surface between the edge and the flat tube in the region of the recess has a lower height than in the region of the edge narrow side. This contributes significantly to reduce the stresses occurring in the corner region of the flat tube. The provision of this recess has led in a surprising manner to a significant decrease in the voltage and thus to a significant increase in the life of the heat exchanger.

Zweckmäßig entspricht die Höhe der insbesondere ausgerundeten Ausnehmung ca. der Hälfte der Höhe der Randbreitseite. Durch Variation der Höhen der Ausnehmungen konnte festgestellt werden, dass die Reduzierung der Spannung in den Ecken der Flachrohre dann am Größten war, wenn die Höhe der Ausnehmung ca. der Hälfte der Höhe der Randbreitseite entsprach. Die Variation der Höhe wurde dabei nach dem überraschenden Auffinden der erfindungsgemäßen Wirkung der Ausnehmung vorgenommen. Die Ausnehmung kann dabei sowohl eine rundliche, eckige sowie eine spitz zulaufende Geometrie aufzeigen.Appropriately, the height of the particular rounded recess corresponds to about half the height of the edge broadside. By varying the heights of the recesses, it could be stated that the reduction in the tension in the corners of the flat tubes was greatest when the height of the recess corresponded to approximately half the height of the edge broadside. The variation of the height was carried out after the surprising finding of the effect of the recess according to the invention. The recess can show both a roundish, angular and a tapered geometry.

Die Höhe der Randbreitseite kann beispielsweise ca. 7 mm betragen, wobei dann die Höhe der Ausnehmung ca. 3,5 mm beträgt. Diese Angaben sind insbesondere für gängige Wärmetauscher, wie diese beispielsweise als Kühler in Kraftfahrzeugen eingesetzt werden, vorstellbar.The height of the edge broadside may for example be about 7 mm, in which case the height of the recess is about 3.5 mm. This information is particularly conceivable for common heat exchangers, as used for example as coolers in motor vehicles.

Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be explained in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

Dabei zeigen, jeweils schematisch,

Fig. 1
einen Ausschnitt aus einem erfindungsgemäßen Wärmetauscher,
Fig. 2
eine Detaildarstellung eines Bodens des Wärmetauschers mit einer im Bereich einer Neigung eines Randes angeordneten Ausnehmung,
Fig. 3
eine Darstellung wie in Fig. 2, jedoch aus anderer Perspektive,
Fig. 4a
eine Detaildarstellung eines Bodens eines Wärmetauschers nach dem Stand der Technik mit nach außen abgebogenem Rand an der Randschmalseite und einem unterbrochen gezeichneten Kontaktflächenrand zwischen Boden und Flachrohr,
Fig. 4b
ein Flachrohr mit unterbrochen gezeichnetem Kontaktflächenrand zu einem Boden nach dem Stand der Technik,
Fig. 5a
eine Darstellung wie in Fig. 4a, jedoch bei einem erfindungsgemäßen Wärmetauscher,
Fig. 5b
eine Darstellung wie in Fig. 4b, jedoch mit unterbrochen gezeichnetem Kontaktflächenrand bei einem erfindungsgemäßen Wärmetauscher.
Show, in each case schematically,
Fig. 1
a section of a heat exchanger according to the invention,
Fig. 2
a detailed representation of a bottom of the heat exchanger with a recess arranged in the region of an edge of a recess,
Fig. 3
a representation like in Fig. 2 but from a different perspective,
Fig. 4a
a detailed representation of a bottom of a heat exchanger according to the prior art with outwardly bent edge on the edge narrow side and an interrupted drawn contact surface edge between the bottom and flat tube,
Fig. 4b
a flat tube with interrupted drawn contact surface edge to a bottom according to the prior art,
Fig. 5a
a representation like in Fig. 4a but in a heat exchanger according to the invention,
Fig. 5b
a representation like in Fig. 4b , but with interrupted drawn contact surface edge in a heat exchanger according to the invention.

Entsprechend der Figur 1, weist ein erfindungsgemäßer Wärmetauscher 1 zum Wärmetausch zwischen einem ersten und einem zweiten Fluid, beispielsweise zum Wärmetausch zwischen Luft und Kühlmittel, einen Block 2 zur getrennten und wärmetauschenden Führung der beiden Fluide auf, der eine Anzahl vom ersten Fluid durchströmte Flachrohre 3 mit einer Rohrschmalseite 4 und einer Rohrbreitseite 5 besitzt. Die Flachrohre 3 sind über entsprechende Durchgangsöffnungen 6 (vergleiche auch die Figuren 2 und 3) in einem Boden 7 in einen Kasten 8 geführt und dadurch fluidisch mit diesem verbunden. Jede der Durchgangsöffnungen 6 besitzt einen das zugehörige Flachrohr 3 einfassenden und aufgestellten Rand 9, wobei die Randbreitseiten 10 höher sind als die Randschmalseiten 11 und über eine entsprechende Neigung 12 ineinander übergehen (vergleiche insbesondere Figur 3). Erfindungsgemäß ist nun im Bereich dieser Neigung 12 eine ausgerundete Ausnehmung 13 vorgesehen, deren Höhe h1 geringer ist als die Höhe h2 der Randschmalseite 11 und selbstverständlich auch geringer als die Höhe h3 der Randbreitseite 10. Durch die ausgerundete Ausnehmung 13 kann eine Spannung in einem durch den Rand 9 eingefassten Flachrohr 3 deutlich, beispielsweise um 14 %, reduziert werden, wodurch die Lebensdauer des Wärmetauschers 1 um nahezu 50 % gesteigert werden kann.According to the FIG. 1 , A heat exchanger 1 according to the invention for heat exchange between a first and a second fluid, for example for heat exchange between air and coolant, a block 2 for the separate and heat exchanging guidance of the two fluids, a number of the first fluid flowed through flat tubes 3 with a narrow side pipe 4 and a pipe broadside 5 has. The flat tubes 3 are via corresponding passage openings 6 (compare also the FIGS. 2 and 3 ) guided in a bottom 7 in a box 8 and thereby fluidly connected thereto. Each of the passage openings 6 has an associated edge tube 9 enclosing and erected edge 9, the edge broad sides 10 are higher than the narrow edges 11 and pass over a corresponding inclination 12 into each other (see in particular FIG. 3 ). According to the invention a rounded recess 13 is now provided in the region of this slope 12, the height h 1 is less than the height h 2 of the narrow edge 11 and of course less than the height h 3 of the edge broadside 10. By the rounded recess 13, a voltage in a bordered by the edge 9 flat tube 3 clearly, for example, by 14%, can be reduced, whereby the life of the heat exchanger 1 can be increased by almost 50%.

Die Höhe h1 der ausgerundeten Ausnehmung 13 entspricht dabei vorzugsweise ca. der Hälfte der Höhe h3 der Randbreitseite, so dass beispielsweise bei einer Höhe h3 von ca. 7 mm die Höhe h1 der Ausnehmung 13 ca. 3,5 mm beträgt. Wie insbesondere den Detaildarstellungen in den Figuren 2 und 3 zu entnehmen ist, liegt die Ausnehmung 13 direkt an der Randschmalseite 11 an und geht anschließend über die Neigung 12 in die Randbreitseite 10 über.The height h 1 of the rounded-out recess 13 preferably corresponds to approximately half the height h 3 of the edge broadside, so that, for example, at a height h 3 of approximately 7 mm, the height h 1 of the recess 13 is approximately 3.5 mm. As in particular the detailed representations in the FIGS. 2 and 3 can be seen, the recess 13 is located directly on the edge narrow side 11 and then goes over the slope 12 in the edge broadside 10 via.

Schutz soll hierbei jedoch nicht nur ausschließlich für den erfindungsgemäßen Wärmetauscher 1 begehrt werden, sondern zusätzlich auch für den Boden 7, wie dieser als Einzelsegment beispielsweise in den Figuren 2 und 3 dargestellt ist. Aus derartigen Einzelsegmenten kann somit ein nahezu beliebig langer Boden 7 zusammengesetzt werden. Ein derartiger Boden 7, das heißt ein derartiges Bodenelement 7', weist eine Durchgangsöffnung 6 mit einem diesen umgebenden aufgestellten Rand 9 auf, wobei die Randbreitseiten 10 höher sind als die Randschmalseiten 11 und über eine entsprechende Neigung 12 ineinander übergehen. Jedes der Bodenelemente 7' besitzt dabei im Bereich der Neigung 12 die zuvor erwähnte ausgerundete Ausnehmung 13, deren Höhe h1 geringer ist als die Höhe h2 der Randschmalseite. Insgesamt sind so je Bodenelement 7' bzw. je Boden 7 vier Ausnehmungen 13 am umlaufenden Rand 9 vorgesehen. Der Boden 7 bzw. das zugehörige Bodenelement 7' kann beispielsweise als Blechformteil ausgebildet sein.In this case, however, protection should not only be desired exclusively for the heat exchanger 1 according to the invention, but additionally also for the bottom 7, as this one single segment, for example in the FIGS. 2 and 3 is shown. From such individual segments thus an almost arbitrarily long bottom 7 can be assembled. Such a bottom 7, that is, such a bottom element 7 ', has a passage opening 6 with a surrounding raised edge 9, wherein the edge broad sides 10 are higher than the narrow edges 11 and pass over a corresponding inclination 12 into each other. Each of the bottom elements 7 'has in the region of the slope 12 the previously mentioned rounded recess 13, the height h 1 is less than the height h 2 of the narrow edge side. Altogether, four recesses 13 on the peripheral edge 9 are provided per floor element 7 'or per floor 7. The bottom 7 or the associated bottom element 7 'may be formed, for example, as a sheet metal part.

Mit der erfindungsgemäßen Ausnehmung 13 ist es möglich, die auf insbesondere die Flachrohre 3 wirkende Spannung deutlich zu reduzieren und damit die Lebensdauer des Wärmetauschers 1 deutlich zu erhöhen.With the recess 13 according to the invention, it is possible to significantly reduce the voltage acting on the flat tubes 3, in particular, and thus significantly increase the service life of the heat exchanger 1.

Betrachtet man die Fig. 4a und 4b, so ist dort ein Wärmetauscher 1' nach dem Stand der Technik, beispielsweise nach der DE 10 2011 075 071 A1 , gezeigt, bei welchem an der Randschmalseite 11' der Rand 9' nach außen abgebogen ist. Dies führt dazu, dass ein Kontaktflächenrand 14' zwischen dem Rand 9' und dem Flachrohr 3' auf der Randschmalseite 11' auf gleicher Höhe h verläuft, wie im Bereich der ausgerundeten Ausnehmung 13', wie dies anschaulich in Fig. 4b dargestellt ist. Der Kontaktflächenrand 14' ist dabei unterbrochen gezeichnet und stellt einen Rand einer Kontaktfläche 16' zwischen dem Rand 9' und dem Flachrohr 3' dar. Die Höhe h4 des Kontaktflächenrandes 14 im Bereich der Randschmalseite 11', entspricht somit der Höhe h5 des Kontaktflächenrandes 14' im Bereich der Ausnehmung 13'.Looking at the Fig. 4a and 4b , so there is a heat exchanger 1 'according to the prior art, for example according to the DE 10 2011 075 071 A1 , shown in which on the edge narrow side 11 'of the edge 9' is bent outwards. This results in that a contact surface edge 14 'between the edge 9' and the flat tube 3 'on the narrow side 11' at the same height h, as in the area of the rounded recess 13 ', as shown in FIG Fig. 4b is shown. The contact surface edge 14 'is drawn here interrupted and represents an edge of a contact surface 16' between the edge 9 'and the flat tube 3'. The height h 4 of the contact surface edge 14 in the region of the narrow edge 11 ', thus corresponds to the height h 5 of the contact surface edge 14 'in the region of the recess 13'.

Bei dem erfindungsgemäßen Wärmetauscher 1 nach den Fig. 1 bis 3 und 5 hingegen, weist der Kontaktflächenrand 14 im Bereich der Ausnehmung 13 analog zu dieser ebenfalls eine Ausrundung 15 auf, die wesentlich dazu beiträgt, die im Eckbereich des Flachrohres 3 auftretenden Spannungen zu reduzieren. Dies ist sehr anschaulich in Fig. 5b, aber auch in Fig. 5a gezeigt. Man kann deutlich erkennen, dass der Kontaktflächenrand 14 im Bereich der Ausnehmung 13 unterhalb des Kontaktflächenrandes 14 im Bereich der Randschmalseite 11 verläuft.In the heat exchanger 1 according to the invention after the Fig. 1 to 3 and 5 on the other hand, the contact surface edge 14 in the region of the recess 13 likewise has a fillet 15 analogous to this, which contributes substantially to reducing the stresses occurring in the corner region of the flat tube 3. This is very vivid in Fig. 5b , but also in Fig. 5a shown. It can be clearly seen that the contact surface edge 14 extends in the region of the recess 13 below the contact surface edge 14 in the region of the edge narrow side 11.

Die Kontaktfläche 16 ist im Bereich der Ausnehmung 13 entsprechend ausgenommen. Der Kontaktflächenrand 14 weist somit im Bereich der Ausnehmung 13 eine geringere Höhe h5 aufweist als im Bereich der Randschmalseite 11, das heißt die Höhe h4 des Kontaktflächenrandes 14 im Bereich der Randschmalseite 11 ist größer als im Bereich der Ausnehmung 13.The contact surface 16 is correspondingly excluded in the region of the recess 13. The contact surface edge 14 thus has a smaller height h 5 in the region of the recess 13 than in the region of the narrow edge 11, that is, the height h 4 of the contact surface edge 14 in the region of the narrow edge 11 is greater than in the region of the recess thirteenth

Die Höhe h4 des Kontaktflächenrandes 14 ist zudem im Bereich der Randschmalseite 11 kleiner als die Höhe h3 des Randes 9 im Bereich der Randbreitseite 10. Gleiches gilt auch für die Höhe h5 des Kontaktflächenrandes 14 im Bereich der Ausnehmung 13.The height h 4 of the contact surface edge 14 is also smaller in the region of the edge narrow side 11 than the height h 3 of the edge 9 in the region of the edge broadside 10. The same applies to the height h 5 of the contact surface edge 14 in the region of the recess 13th

Zur weiteren Entlastung des Flachrohres 3, kann der Rand 9 im Eckbereich, das heißt im Bereich der Ausnehmung 13 eine reduzierte Wandstärke aufweisen.To further relieve the flat tube 3, the edge 9 in the corner region, that is, in the region of the recess 13 have a reduced wall thickness.

Claims (5)

  1. A heat exchanger (1) for exchanging heat between a first fluid and a second fluid,
    - with a block (2) for conducting the two fluids separately and so as to exchange heat, said block having a number of flat tubes (3) through which the first fluid flows and which comprise a narrow tube side (4) and a wide tube side (5),
    - with a box (8) which has a base (7), said flat tubes (3) being guided into the box (8) via corresponding through-openings (6) in the base (7),
    - wherein each through-opening (6) has at least one raised edge (9) which surrounds the corresponding flat tube (3),
    - wherein the wide edge sides (10) are higher than the narrow edge sides (11) and transition into one another via a corresponding inclination (12),
    characterized in that
    - a recess (13) is provided in the region of the inclination (12), the height (h1) of said recess being lower than the height (h2) of the narrow edge side (11),
    - a contact surface edge (14) of a contact surface (16) between the edge (9) and the flat tube (3) has a lower height h5 in the region of the recess (13) than in the region of the narrow edge side (11).
  2. The heat exchanger according to Claim 1,
    characterized in that
    the height (h1) of the recess (13) corresponds to approximately half the height (h3) of the wide edge side (10).
  3. The heat exchanger according to Claim 1 or 2,
    characterized in that
    - the height (h3) of the wide edge side (10) is approximately 7 mm, and/or
    - the height (h1) of the recess (13) is approximately 3.5 mm.
  4. The heat exchanger according to one of Claims 1 to 3,
    characterized in that
    the height h4 of the contact surface edge (14) in the region of the narrow edge side (11) is lower than the height h3 of the edge (9) in the region of the wide edge side (10).
  5. The heat exchanger according to one of Claims 1 to 4,
    characterized in that
    the recess (13) lies directly against the narrow edge side (11).
EP13783291.1A 2012-10-22 2013-10-21 Heat exchanger Active EP2909562B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012219268.9A DE102012219268A1 (en) 2012-10-22 2012-10-22 heat exchangers
PCT/EP2013/071943 WO2014064036A1 (en) 2012-10-22 2013-10-21 Heat exchanger

Publications (2)

Publication Number Publication Date
EP2909562A1 EP2909562A1 (en) 2015-08-26
EP2909562B1 true EP2909562B1 (en) 2016-09-28

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EP13783291.1A Active EP2909562B1 (en) 2012-10-22 2013-10-21 Heat exchanger

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US (1) US10215502B2 (en)
EP (1) EP2909562B1 (en)
CN (1) CN104704314A (en)
BR (1) BR112015008246B1 (en)
CA (1) CA2881876A1 (en)
DE (1) DE102012219268A1 (en)
WO (1) WO2014064036A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014213758A1 (en) * 2014-07-15 2016-01-21 Mahle International Gmbh Tube bottom and heat exchanger
GB2550952B (en) 2016-06-02 2020-07-01 Denso Marston Ltd A header plate for a heat exchanger
DE202017103235U1 (en) 2017-05-30 2018-08-31 Autokühler GmbH & Co KG heat exchangers
CN108571378A (en) * 2018-06-14 2018-09-25 东风贝洱热系统有限公司 A kind of main chip of intercooler of automobile

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423746A1 (en) * 1984-06-28 1986-01-09 Thermal-Werke Wärme-Kälte-Klimatechnik GmbH, 6832 Hockenheim Heat exchanger laminar for tubes with an elliptical or oval cross-section
DE3910357A1 (en) * 1989-03-30 1990-10-04 Autokuehler Gmbh & Co Kg GUIDE PLATE FOR A HEAT EXCHANGER AND A HEAT EXCHANGER MADE THEREOF
JP3822958B2 (en) * 1997-08-04 2006-09-20 サンデン株式会社 Manufacturing method of heat exchanger
JP2004293982A (en) * 2003-03-27 2004-10-21 Calsonic Kansei Corp Core part structure of heat exchanger
EP1728038B1 (en) 2004-03-05 2011-07-27 Behr GmbH & Co. KG Device for replacing heat and method for the production thereof
US7413006B2 (en) * 2006-04-06 2008-08-19 Modine Manufacturing Company Header plate for use in a heat exchanger
EP2122290B1 (en) 2006-12-13 2017-07-19 MAHLE Behr GmbH & Co. KG Heat exchanger for heat exchange between a first fluid and a second fluid
FR2951259B1 (en) * 2009-10-08 2014-02-28 Valeo Systemes Thermiques COLLECTOR PLATE FOR HEAT EXCHANGER AND CORRESPONDING HEAT EXCHANGER
DE102011075071A1 (en) 2011-05-02 2012-11-08 Behr Gmbh & Co. Kg Heat exchangers, in particular intercoolers

Also Published As

Publication number Publication date
EP2909562A1 (en) 2015-08-26
BR112015008246B1 (en) 2020-11-17
WO2014064036A1 (en) 2014-05-01
US20150292813A1 (en) 2015-10-15
CN104704314A (en) 2015-06-10
CA2881876A1 (en) 2014-05-01
BR112015008246A2 (en) 2017-07-04
US10215502B2 (en) 2019-02-26
DE102012219268A1 (en) 2014-04-24

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