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EP1978325B1 - Side panel with weakened area for a heat exchanger - Google Patents

Side panel with weakened area for a heat exchanger Download PDF

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Publication number
EP1978325B1
EP1978325B1 EP08102278A EP08102278A EP1978325B1 EP 1978325 B1 EP1978325 B1 EP 1978325B1 EP 08102278 A EP08102278 A EP 08102278A EP 08102278 A EP08102278 A EP 08102278A EP 1978325 B1 EP1978325 B1 EP 1978325B1
Authority
EP
European Patent Office
Prior art keywords
end plate
areas
weakness
cheek
zones
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
EP08102278A
Other languages
German (de)
French (fr)
Other versions
EP1978325A1 (en
Inventor
Christian Riondet
Nicolas Cormet
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 Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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.)
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Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Priority to PL08102278T priority Critical patent/PL1978325T3/en
Publication of EP1978325A1 publication Critical patent/EP1978325A1/en
Application granted granted Critical
Publication of EP1978325B1 publication Critical patent/EP1978325B1/en
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
    • 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
    • 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 present invention relates to a cheek for a heat exchanger, especially a heat exchanger for the equipment of a motor vehicle, according to the preamble of claim 1.
  • a cheek is known from EP 1 195 573 .
  • Conventional heat exchangers comprise a bundle of tubes delimited by two end tubes.
  • spacers may be provided between the tubes of the bundle to improve the heat exchange.
  • An interlayer may be disposed on the outer face of each of the end tubes.
  • the exchanger further comprises two collector plates traversed by the ends of the bundle of tubes. Furthermore, a cheek is conventionally arranged directly on the end spacer of each of the end tubes.
  • the cheeks of a heat exchanger and form spacer between the collector plates to maintain a constant spacing between them and facilitate the manufacture of the exchanger. Furthermore, they can be used to support and maintain accessory bodies related to the heat exchanger, such as a motor-fan unit.
  • each cheek comprises a central core, bordered by two longitudinal wings that extend along the cheek.
  • the central soul has generally a rectangular and flat shape.
  • Each longitudinal wing protrudes from the plane defined by the central core.
  • the cheek thus has a substantially U-shaped cross section.
  • the longitudinal wings are conventionally designed to stiffen and strengthen the associated cheek.
  • the conventional heat exchanger tubes tend to have a relatively small thickness, to limit the manufacturing costs of the exchanger.
  • the tubes are less and less resistant to thermal shocks and the risks of rupture mentioned above increase accordingly.
  • the patent FR 2 183 375 proposes a transverse fold, in the shape of a lyre, on the bracket which connects the cheek to the collector plate or directly on the cheek.
  • Licences EP 1 195 573 and US 6,328,098 provide an opening on each cheek so that a portion of the edge of the opening is located near an edge of the U-shaped cheek. Furthermore, a fold (rupture zone) is provided which extends transversely of the aforementioned part of the edge of the opening to the edge of the cheek located in its vicinity. The V-shaped rupture zones locally reduce the thickness in the central core and / or in the wings of the U. Also, each opening between the folds is oriented, in its elongated part, forming an acute angle with the direction of the length of the cheek.
  • the present invention intends to overcome the disadvantages of existing cheeks and heat exchangers.
  • the invention relates to a cheek for a heat exchanger, extending longitudinally, comprising at least one opening, said opening forming a cut of the cheek, and at least two weakening zones, characterized in that the two zones weakening are located on separate parallel planes.
  • weakening zone is understood to mean a zone having a breakable function and / or a longitudinal expansion function, that is to say, thanks to the invention, the cheek is able to cut itself at the level of the area of weakness if necessary and possibly able to expand longitudinally (in the longitudinal direction of the cheek).
  • the present invention also relates to a heat exchanger, not shown in the accompanying figures, in particular for a motor vehicle, comprising two collectors connected by a bundle of tubes and spacers, characterized in that it comprises at least one cheek such as as defined above.
  • the cheek is attached to one end or side of the aforesaid beam.
  • the figure 1 represents a cheek portion according to an embodiment of the invention; it being understood that this portion is considered both in length and in width.
  • the section profile of this cheek 1 has two slots 2, 3 distant, extending from flanks and a substantially flat core 4.
  • the cheek 1 is metallic, for example aluminum or steel.
  • openings 5, 5 ', 5 ", two openings 5', 5" extending from the opposite side edges and a central opening 5 disposed between the two zones of weakening 6, 6 '.
  • the openings 5 ', 5 "extending from a lateral edge are directed obliquely, that is to say they form an acute angle ⁇ (With 0 ° ⁇ ⁇ 90 °) with the longitudinal axis XX 'of the cheek 1.
  • the central opening 5 has a V-shape whose two segments also extend at an acute angle with respect to the axis longitudinal XX '.
  • the weakening zones 6, 6 ' are here present at each of the two protuberances 2, 3 and are integrated respectively in a sinusoidal portion 7, 7', or at a wave, of these protuberances 2, 3.
  • weakening 6, 6 ' means the parts located near the apex, including the vertex, of each of these sinusoidal portions 7, 7'.
  • the weakening zones 6, 6 ' consist of the two elements presented enlarged on the figure 1 so that if these two zones 6, 6 ', in the elements / segments of matter which constitute them respectively, actually meet the definition of parallel distinct planes, they are also able to elongate or flatten.
  • Each of these two weakening zones 6, 6 ' is indeed able to extend horizontally, or linearly along the axis XX', one of these flattened weakening zones 6 'then extending in the plane the upper face 3 'of the protuberance 3 while the other weakening zone 6 then extending in the plane defined by the flanks, or the core 4, flat cheek.
  • the formation of the weakening zones 6, 6 'of the embodiment represented on the figure 1 will be obtained by consecutive folding weakening areas 6, 6 ', one 6 initially extending in the plane of the plane portions, or the core 4, the cheek 1 while the other weakening zone 6 'extending in the plane of the upper face 2', 3 'of the protuberances 2, 3 of the cheek, it being understood that these two protuberances 2, 3 have a substantially equal height so that their upper faces 2', 3 'respective extend in the same plane.
  • the weakening zones 6, 6 ' comprise a narrowing or reduction of material 8, 8' located at the respective vertices of each of the weakening zones 6, 6 '; this narrowing or reduction of material 8, 8 'extending over the entire width of the weakening zone 6 or 6',
  • these weakening zones 6, 6 ' are likely to break; this breaking being facilitated by these narrowing or decreasing material 8, 8 'weakening areas 6, 6'.
  • the figures 2 and 3 show a second embodiment of a cheek 1 according to the invention.
  • This embodiment of the cheek 1 is here identical to that of the figure 1 , with the exception of openings and areas of weakness.
  • the openings 9, 9', 10, 10 ' present a substantially rectangular shape with rounded corners.
  • the cheek 1 is more rigid and able to withstand bending due to handling and thermal expansion phenomena of the cheek / body of the exchanger (bundle of tubes located under the cheek) It will be noted that, in this embodiment, there is no shrinkage or decrease of the material at the weakening zones 11, 11 11, but of course this material reduction solution can be envisaged on at least one or all of these weakening zones.
  • the third embodiment illustrated on the figures 4 , 5 and 6 again presents a cheek 1 identical to those presented in the first two embodiments but in which the openings and the weakening zones are different.
  • the weakening zones 14, 14 ', 14 "extend between the openings 12, 12', 13, 13 '. 14 is located in the lower plane, that is to say the plane formed by the plane portions, or the core 4, the cheek 1 while two other weakening areas 14 ', 14 " are located in the plane formed by, or having, the upper faces or sides 2 ', 3' of the protuberances 2, 3, these two planes being parallel planes.
  • the fourth mode of execution resumes the second mode of execution of figures 2 and 3 and adds a narrowing or a reduction in material of the weakening zones 11, 11 ', 11 ".
  • This reduction in material may be at least 1/3 of the thickness of the material of the cheek 1, substantially equal to on its other parts, for example a material reduction of half the thickness of the sheet forming the cheek 1.
  • this reduction or withdrawal of material may have a section substantially in the form of a triangle, inverted on the figure 9 because made from the upper face of the cheek.
  • this reduction or withdrawal of material 15 from the lower face of the cheek 1 and / or that this decrease in material has a section or shape different from that shown here.
  • the fifth embodiment also takes again the second embodiment by varying the shape of the openings 9, 9 ', 10, 10'.
  • the openings 9, 9 ', 10, 10' always have a substantially rectangular shape but their corners have an oblique section so that the ends of the openings have a shape of triangle or V.
  • the last embodiment chosen to illustrate the invention differs from the second embodiment in that the cheek 1 comprises only one protrusion 2.
  • the cheek 1 comprises only one protrusion 2.
  • the present invention applies to all types of exchanger requiring cheeks designed to counter the phenomena of expansion and torsion due to thermal differences.

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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)
  • Separation By Low-Temperature Treatments (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The flange (1) has three openings (5, 5', 5'') in which two openings (5', 5'') extend from opposite lateral edges. The central opening (5) is arranged between weakening zones (6, 6'), where flange is made of metal e.g. aluminum or steel. The zones are situated in distinct parallel planes. The zones are arranged at level of projections and are integrated respectively in sinusoidal portion (7, 7') of the projections.

Description

La présente invention concerne une joue pour un échangeur de chaleur, notamment un échangeur de chaleur destiné à l'équipement d'un véhicule automobile, selon le préambule de la revendication 1. Une telle joue est connue du EP 1 195 573 .The present invention relates to a cheek for a heat exchanger, especially a heat exchanger for the equipment of a motor vehicle, according to the preamble of claim 1. Such a cheek is known from EP 1 195 573 .

Les échangeurs de chaleur classiques comportent un faisceau de tubes, délimité par deux tubes d'extrémités. En complément, des intercalaires peuvent être prévus entre les tubes du faisceau pour améliorer l'échange de chaleur. Un intercalaire peut être disposé sur la face externe de chacun des tubes d'extrémité.Conventional heat exchangers comprise a bundle of tubes delimited by two end tubes. In addition, spacers may be provided between the tubes of the bundle to improve the heat exchange. An interlayer may be disposed on the outer face of each of the end tubes.

L'échangeur comporte en outre deux plaques collectrices traversées par les extrémités du faisceau de tubes. Par ailleurs, une joue est classiquement disposée directement sur l'intercalaire d'extrémité de chacun des tubes d'extrémité.The exchanger further comprises two collector plates traversed by the ends of the bundle of tubes. Furthermore, a cheek is conventionally arranged directly on the end spacer of each of the end tubes.

Les joues d'un échangeur de chaleur forment ainsi entretoise entre les plaques collectrices pour maintenir un écartement constant entre elles et faciliter la fabrication de l'échangeur. Par ailleurs, elles peuvent être utilisées pour supporter et maintenir des organes accessoires liés à l'échangeur de chaleur, tel qu'un groupe moto-ventilateur.The cheeks of a heat exchanger and form spacer between the collector plates to maintain a constant spacing between them and facilitate the manufacture of the exchanger. Furthermore, they can be used to support and maintain accessory bodies related to the heat exchanger, such as a motor-fan unit.

Généralement, chaque joue comprend une âme centrale, bordée par deux ailes longitudinales qui s'étendent le long de la joue. L'âme centrale a généralement une forme rectangulaire et plane. Chaque aile longitudinale fait saillie par rapport au plan défini par l'âme centrale. La joue a ainsi une section transversale sensiblement en forme de U. Les ailes longitudinales sont classiquement prévues pour rigidifier et renforcer la joue associée.Generally, each cheek comprises a central core, bordered by two longitudinal wings that extend along the cheek. The central soul has generally a rectangular and flat shape. Each longitudinal wing protrudes from the plane defined by the central core. The cheek thus has a substantially U-shaped cross section. The longitudinal wings are conventionally designed to stiffen and strengthen the associated cheek.

Lorsque l'échangeur est en fonctionnement, les variations de circulation du fluide caloporteur à l'intérieur des tubes peuvent provoquer des écarts de température qui engendrent une dilatation thermique de ces tubes. Il en résulte des contraintes mécaniques dans les tubes. De telles contraintes peuvent causer la rupture des tubes.When the exchanger is in operation, the variations of circulation of the heat transfer fluid inside the tubes can cause temperature differences that cause thermal expansion of these tubes. This results in mechanical stresses in the tubes. Such stresses can cause the tubes to break.

Par ailleurs, les tubes d'échangeur de chaleur classiques ont tendance à avoir une épaisseur relativement faible, pour limiter les coûts de fabrication de l'échangeur. Par suite, les tubes sont de moins en moins résistants aux chocs thermiques et les risques de rupture mentionnés ci-dessus augmentent en conséquence.Moreover, the conventional heat exchanger tubes tend to have a relatively small thickness, to limit the manufacturing costs of the exchanger. As a result, the tubes are less and less resistant to thermal shocks and the risks of rupture mentioned above increase accordingly.

Pour limiter ces risques de rupture, il convient de dissocier mécaniquement les extrémités de chaque joue de la partie centrale de la joue, afin d'éviter le transfert des contraintes liées à la dilatation thermique des tubes. Pour cela, il est connu de réaliser une découpe transversale de la joue au niveau de sa partie centrale, après le brasage de l'échangeur. Par exemple, une telle découpe peut être réalisée par sciage. Cette solution améliore la résistance des tubes aux chocs thermiques, mais a l'inconvénient de générer des copeaux qui nuisent à la propreté des échangeurs et des machines, et de diminuer la tenue en vibration et/ou en pressions alternées de l'échangeur.To limit these risks of rupture, it is necessary to mechanically separate the ends of each cheek from the central part of the cheek, in order to avoid the transfer of the stresses related to the thermal expansion of the tubes. For this, it is known to make a transverse cut of the cheek at its central portion, after the brazing of the exchanger. For example, such a cut can be made by sawing. This solution improves the resistance of the tubes to thermal shocks, but has the disadvantage of generating chips that adversely affect the cleanliness of exchangers and machines, and to reduce the resistance to vibration and / or alternating pressures of the exchanger.

Dans d'autres réalisations existantes, il est connu de réaliser des affaiblissements dans la joue pour lui permettre de se dilater localement, et par suite de limiter les transferts de contrainte aux tubes.In other existing embodiments, it is known to achieve losses in the cheek to allow it to expand locally, and therefore to limit the transfer of stress to the tubes.

Par exemple, le brevet FR 2 183 375 propose un pli transversal, en forme de lyre, sur la patte de fixation qui relie la joue a la plaque collectrice ou directement sur la joue.For example, the patent FR 2 183 375 proposes a transverse fold, in the shape of a lyre, on the bracket which connects the cheek to the collector plate or directly on the cheek.

Les brevets EP 1 195 573 et US 6 328 098 proposent une ouverture sur chaque joue de sorte qu'une partie du bord de l'ouverture est située au voisinage d'un bord de la joue en forme de U. Par ailleurs, un pli (zone de rupture) est prévu qui s'étend transversalement de la partie précitée du bord de l'ouverture au bord de la joue situé à son voisinage. Les zones de rupture en forme de V réduisent localement l'épaisseur dans l'âme centrale et/ou dans les ailes du U. Egalement, chaque ouverture entre les plis est orientée, dans sa partie allongée, constituant un angle aiguë avec la direction de la longueur de la joue.Licences EP 1 195 573 and US 6,328,098 provide an opening on each cheek so that a portion of the edge of the opening is located near an edge of the U-shaped cheek. Furthermore, a fold (rupture zone) is provided which extends transversely of the aforementioned part of the edge of the opening to the edge of the cheek located in its vicinity. The V-shaped rupture zones locally reduce the thickness in the central core and / or in the wings of the U. Also, each opening between the folds is oriented, in its elongated part, forming an acute angle with the direction of the length of the cheek.

A l'heure actuelle, ces solutions ne proposent pas des joues à la fois de faibles épaisseurs et aptes à assurer la rigidité de l'ensemble des éléments de l'échangeur, en particulier lors de la manipulation des composants, ou lorsque la température du fluide entrant dans l'échangeur est très élevée, ce qui conduit à de sévères chocs thermiques en particulier entre la joue et les tubes intercalaires adjacents.At present, these solutions do not offer cheeks at the same time of small thicknesses and able to ensure the rigidity of all the elements of the exchanger, in particular during the handling of the components, or when the temperature of the fluid entering the exchanger is very high, which leads to severe thermal shocks especially between the cheek and the adjacent intermediate tubes.

La présente invention entend remédier aux inconvénients des joues et échangeurs de chaleur existants.The present invention intends to overcome the disadvantages of existing cheeks and heat exchangers.

Ainsi, l'invention concerne une joue pour un échangeur de chaleur, s'étendant longitudinalement, comportant au moins une ouverture, ladite ouverture formant une découpe de la joue, et au moins deux zones d'affaiblissement, caractérisée en ce que les deux zones d'affaiblissement sont situées sur des plans distincts parallèles.Thus, the invention relates to a cheek for a heat exchanger, extending longitudinally, comprising at least one opening, said opening forming a cut of the cheek, and at least two weakening zones, characterized in that the two zones weakening are located on separate parallel planes.

On entend par l'expression « zone d'affaiblissement » une zone présentant une fonction sécable et/ou une fonction de dilatation longitudinale, c'est-à-dire grâce à l'invention, la joue est apte à se couper au niveau de la zone d'affaiblissement si nécessaire et éventuellement apte à se dilater longitudinalement (dans le sens longitudinal de la joue).The term "weakening zone" is understood to mean a zone having a breakable function and / or a longitudinal expansion function, that is to say, thanks to the invention, the cheek is able to cut itself at the level of the area of weakness if necessary and possibly able to expand longitudinally (in the longitudinal direction of the cheek).

Par ailleurs, grâce au placement d'au moins deux zones d'affaiblissement sur deux plans parallèles distincts, on évite le phénomène de flexion de la joue lors de sa manipulation, et lors de sa dilation due aux différences thermiques. En effet, en plaçant ses zones d'affaiblissement, qui retiennent par ailleurs deux côtés ou parties de la joue, sur deux plans parallèles, l'un en dessous de l'autre, on rigidifie fortement la joue en évitant les phénomènes de flexion.Furthermore, thanks to the placement of at least two weakening zones on two separate parallel planes, it avoids the phenomenon of flexion of the cheek during its handling, and during its expansion due to thermal differences. Indeed, by placing its weakening zones, which also retain two sides or parts of the cheek, on two parallel planes, one below the other, stiffens the cheek strongly avoiding bending phenomena.

D'autres particularités ou caractéristiques sont présentées dans la suite :

  • les deux zones d'affaiblissement sont les seuls éléments de matière formant discontinuité de la découpe de sorte que la découpe n'est interrompue que par lesdites deux zones d'affaiblissement ;
  • la joue consiste en une âme sensiblement plane à partir de laquelle s'étend au moins une protubérance ;
  • la joue comprend deux protubérances s'étendant à partir de l'âme plane ;
  • la ou les protubérance(s) présente(nt) une section sensiblement carrée, rectangulaire ou ronde ;
  • la joue comprend une pluralité d'ouvertures ;
  • la ou les ouverture(s) s'étend(ent) linéairement, perpendiculairement à l'axe longitudinal de la joue ;
  • les zones d'affaiblissement présentent une réduction/diminution d'épaisseur de matière ;
  • au moins une des zones d'affaiblissement est située sur une portion plane ;
  • au moins une des zones d'affaiblissement est située sur une portion incurvée, pliée ou sinusoïdale ;
  • les deux zones d'affaiblissement sont situées respectivement sur la face supérieure de la protubérance et sur l'âme plane ;
  • les zones d'affaiblissement sont toutes situées sur un même axe linéaire ;
  • selon une autre possibilité offerte par l'invention, les zones d'affaiblissement sont situés sur des axes linéaires différents (dans le cas d'au moins trois zones d'affaiblissement, une de ces zones d'affaiblissement n'étant pas sur l'axe défini par les deux autres zones d'affaiblissement) ;
Other particularities or characteristics are presented in the following:
  • the two weakening zones are the only discontinuous material elements of the blank so that the blank is interrupted only by said two weakening zones;
  • the cheek consists of a substantially planar core from which extends at least one protuberance;
  • the cheek comprises two protuberances extending from the flat core;
  • the protuberance (s) present (s) a substantially square, rectangular or round section;
  • the cheek comprises a plurality of openings;
  • the aperture (s) extends (ent) linearly, perpendicularly to the longitudinal axis of the cheek;
  • weakening areas have a reduction / decrease in material thickness;
  • at least one of the weakening zones is located on a flat portion;
  • at least one of the weakening zones is located on a curved, folded or sinusoidal portion;
  • the two weakening zones are respectively located on the upper face of the protuberance and on the flat core;
  • the zones of weakness are all located on the same linear axis;
  • according to another possibility offered by the invention, the weakening zones are located on different linear axes (in the case of at least three weakening zones, one of these weakening zones not being on the axis defined by the other two weakening zones);

La présente invention concerne également un échangeur de chaleur, non représenté sur les figures annexés, en particulier pour un véhicule automobile, comportant deux collecteurs reliés par un faisceau de tubes et d'intercalaires, caractérisé en ce qu'il comprend au moins une joue telle que définie ci-dessus.The present invention also relates to a heat exchanger, not shown in the accompanying figures, in particular for a motor vehicle, comprising two collectors connected by a bundle of tubes and spacers, characterized in that it comprises at least one cheek such as as defined above.

Avantageusement, la joue est fixée à l'une des extrémité ou côté du susdit faisceau.Advantageously, the cheek is attached to one end or side of the aforesaid beam.

Un mode de réalisation de l'invention sera décrit ci-après, à titre d'exemple non limitatif, en faisant référence aux dessins annexés dans lesquels :

  • La figure 1 représente une vue en perspective d'une portion d'une joue où sont situées les zones d'affaiblissement selon l'invention ;
  • La figure 2 est une vue d'en haut d'un autre mode d'exécution d'une portion de joue selon l'invention ;
  • La figure 3 est une vue en coupe selon l'axe AA de la joue représentée sur la figure 2 ;
  • La figure 4 est une vue d'en haut d'un autre mode d'exécution d'une joue selon l'invention ;
  • La figure 5 est une vue en coupe selon l'axe AA de la joue représentée sur la figure 4 ;
  • La figure 6 est une vue en coupe selon l'axe BB de la joue représentée sur la figure 4 ;
  • La figure 7 est une vue d'en haut d'un autre mode d'exécution d'une joue selon l'invention ;
  • La figure 8 est une vue en coupe selon l'axe AA de la joue représentée sur la figure 7 ;
  • La figure 9 est une vue en coupe selon l'axe BB représenté sur la figure 8 ;
  • La figure 10 illustre une vue de dessus d'une portion d'une joue selon l'invention ;
  • La figure 11 est une vue en coupe selon l'axe AA de la joue représentée sur la figure 10 ;
  • La figure 12 illustre une vue de dessus d'un autre mode de réalisation d'une joue selon l'invention ;
  • La figure 13 est une vue en coupe selon l'axe AA représenté sur la figure 12.
An embodiment of the invention will be described hereinafter, by way of non-limiting example, with reference to the appended drawings in which:
  • The figure 1 represents a perspective view of a portion of a cheek where the weakening zones according to the invention are located;
  • The figure 2 is a view from above of another embodiment of a cheek portion according to the invention;
  • The figure 3 is a sectional view along the axis AA of the cheek represented on the figure 2 ;
  • The figure 4 is a view from above of another embodiment of a cheek according to the invention;
  • The figure 5 is a sectional view along the axis AA of the cheek represented on the figure 4 ;
  • The figure 6 is a sectional view along the axis BB of the cheek represented on the figure 4 ;
  • The figure 7 is a view from above of another embodiment of a cheek according to the invention;
  • The figure 8 is a sectional view along the axis AA of the cheek represented on the figure 7 ;
  • The figure 9 is a sectional view along the axis BB represented on the figure 8 ;
  • The figure 10 illustrates a top view of a portion of a cheek according to the invention;
  • The figure 11 is a sectional view along the axis AA of the cheek represented on the figure 10 ;
  • The figure 12 illustrates a top view of another embodiment of a cheek according to the invention;
  • The figure 13 is a sectional view along the axis AA represented on the figure 12 .

La figure 1 représente une portion de joue selon un mode d'exécution de l'invention ; étant entendu que cette portion est considéré tant dans la longueur que dans la largeur. Dans l'exemple choisi pour illustrer l'invention, le profil de section de cette joue 1 présente deux créneaux 2, 3 distants, s'étendant à partir de flancs et une âme 4 sensiblement plane. La joue 1 est métallique, par exemple en aluminium ou en acier.The figure 1 represents a cheek portion according to an embodiment of the invention; it being understood that this portion is considered both in length and in width. In the example chosen to illustrate the invention, the section profile of this cheek 1 has two slots 2, 3 distant, extending from flanks and a substantially flat core 4. The cheek 1 is metallic, for example aluminum or steel.

Vu de dessus, il y a, dans cet exemple de réalisation, trois ouvertures 5, 5', 5", deux ouvertures 5', 5" s'étendant à partir des bords latéraux opposés et une ouverture centrale 5 disposée entre les deux zones d'affaiblissement 6, 6'. Les ouvertures 5', 5" s'étendant à partir d'un bord latéral sont dirigées obliquement, c'est-à-dire qu'elles forment un angle aigu β (avec 0° < β < 90°) avec l'axe longitudinal XX' de la joue 1. L'ouverture centrale 5 présente une forme en V dont les deux segments s'étendent également suivant un angle aigu par rapport à l'axe longitudinal XX'.Seen from above, there are, in this embodiment, three openings 5, 5 ', 5 ", two openings 5', 5" extending from the opposite side edges and a central opening 5 disposed between the two zones of weakening 6, 6 '. The openings 5 ', 5 "extending from a lateral edge are directed obliquely, that is to say they form an acute angle β (With 0 ° <β <90 °) with the longitudinal axis XX 'of the cheek 1. The central opening 5 has a V-shape whose two segments also extend at an acute angle with respect to the axis longitudinal XX '.

Les zones d'affaiblissement 6, 6' sont ici présentes au niveau de chacune des deux protubérances 2, 3 et sont intégrées respectivement dans une portion sinusoïdale 7, 7', ou à vague, de ces protubérances 2, 3. Les zones d'affaiblissement 6, 6' s'entendent des parties situées à proximité du sommet, sommet inclus, de chacune de ces portions sinusoïdales 7, 7'. Dans cet exemple, les zones d'affaiblissement 6, 6' consistent dans les deux éléments présentés agrandis sur la figure 1 de sorte que si ces deux zones 6, 6', dans les éléments/segments de matière qui les constituent respectivement, répondent effectivement à la définition de plans distincts parallèles, elles sont également aptes à s'allonger ou s'aplanir. Chacune de ces deux zones d'affaiblissement 6, 6' est en effet apte à s'étendre horizontalement, ou linéairement suivant l'axe XX', l'une 6' de ces zones d'affaiblissement aplatie s'étendant alors dans le plan de la face supérieure 3' de la protubérance 3 tandis que l'autre zone d'affaiblissement 6 s'étendant alors dans le plan défini par les flancs, ou l'âme 4, plats de la joue. Ainsi, la formation des zones d'affaiblissement 6, 6' du mode d'exécution représenté sur la figure 1 sera obtenue par pliage consécutif des zones d'affaiblissement 6, 6', l'une 6 s'étendant initialement dans le plan des parties planes, ou de l'âme 4, de la joue 1 tandis que l'autre zone d'affaiblissement 6' s'étendant dans le plan de la face supérieure 2', 3' des protubérances 2, 3 de la joue, étant entendu que ces deux protubérances 2, 3 présentent une hauteur sensiblement égale de sorte que leurs faces supérieures 2', 3' respectives s'étendent dans un même plan.The weakening zones 6, 6 'are here present at each of the two protuberances 2, 3 and are integrated respectively in a sinusoidal portion 7, 7', or at a wave, of these protuberances 2, 3. weakening 6, 6 'means the parts located near the apex, including the vertex, of each of these sinusoidal portions 7, 7'. In this example, the weakening zones 6, 6 'consist of the two elements presented enlarged on the figure 1 so that if these two zones 6, 6 ', in the elements / segments of matter which constitute them respectively, actually meet the definition of parallel distinct planes, they are also able to elongate or flatten. Each of these two weakening zones 6, 6 'is indeed able to extend horizontally, or linearly along the axis XX', one of these flattened weakening zones 6 'then extending in the plane the upper face 3 'of the protuberance 3 while the other weakening zone 6 then extending in the plane defined by the flanks, or the core 4, flat cheek. Thus, the formation of the weakening zones 6, 6 'of the embodiment represented on the figure 1 will be obtained by consecutive folding weakening areas 6, 6 ', one 6 initially extending in the plane of the plane portions, or the core 4, the cheek 1 while the other weakening zone 6 'extending in the plane of the upper face 2', 3 'of the protuberances 2, 3 of the cheek, it being understood that these two protuberances 2, 3 have a substantially equal height so that their upper faces 2', 3 'respective extend in the same plane.

L'une 7 de ces portions sinusoïdales étant orientée vers le haut tandis que l'autre portion 7' est orientée vers le bas, les sommets respectifs de chacune de ces portions sinusoïdales 7, 7' sont opposés, l'un des sommets étant situé au niveau des flancs plats 4 tandis que l'autre sommet étant situé au niveau de la face supérieure des protubérances 2, 3.One of these sinusoidal portions being oriented upwards while the other portion 7 'is oriented downwards, the respective vertices of each of these sinusoidal portions 7, 7' are opposite, one of the vertices being situated at the level of the flat flanks 4 while the other vertex being situated at the level of the upper face of the protuberances 2, 3.

En outre, les zones d'affaiblissement 6, 6' comportent un rétrécissement ou diminution de matière 8, 8' localisé aux sommets respectifs de chacune des zones d'affaiblissement 6, 6' ; ce rétrécissement ou diminution de matière 8, 8' s'étendant sur toute la largeur de la zone d'affaiblissement 6 ou 6', Ainsi, outre la possibilité pour les zones d'affaiblissement 6, 6' de s'étendre, ici longitudinalement suivant l'axe XX', sous les effets en particulier des phénomènes de dilatation thermique, ces zones d'affaiblissement 6, 6' sont susceptibles de se rompre ; cette rupture étant facilitée par ces rétrécissements ou diminutions de matière 8, 8' des zones d'affaiblissement 6, 6'.In addition, the weakening zones 6, 6 'comprise a narrowing or reduction of material 8, 8' located at the respective vertices of each of the weakening zones 6, 6 '; this narrowing or reduction of material 8, 8 'extending over the entire width of the weakening zone 6 or 6', Thus, besides the possibility for the weakening zones 6, 6 'to extend, here longitudinally along the axis XX ', under the effects in particular of thermal expansion phenomena, these weakening zones 6, 6' are likely to break; this breaking being facilitated by these narrowing or decreasing material 8, 8 'weakening areas 6, 6'.

Les figures 2 et 3 présentent un deuxième mode d'exécution d'une joue 1 selon l'invention. Cette réalisation de la joue 1 est ici identique à celle de la figure 1, à l'exception des ouvertures et des zones d'affaiblissement. Dans cet exemple de réalisation, il y a quatre ouvertures 9, 9', 10, 10', deux d'entre elles 9, 9' s'étendant à partir des bords latéraux opposés tandis que les deux autres ouvertures 10, 10' sont centrales, c'est-à-dire à distance des deux bords latéraux. Toutes les ouvertures 9, 9', 10, 10' s'étendent linéairement suivant un axe commun AA perpendiculaire à l'axe longitudinal à l'axe XX' de la joue 1. Les ouvertures 9, 9', 10, 10' présentent une forme sensiblement rectangulaire avec les coins arrondis.The figures 2 and 3 show a second embodiment of a cheek 1 according to the invention. This embodiment of the cheek 1 is here identical to that of the figure 1 , with the exception of openings and areas of weakness. In this embodiment, there are four openings 9, 9 ', 10, 10', two of them 9, 9 'extending from the opposite side edges while the other two openings 10, 10' are central, that is to say at a distance from the two lateral edges. All the openings 9, 9 ', 10, 10' extend linearly along a common axis AA perpendicular to the longitudinal axis to the axis XX 'of the cheek 1. The openings 9, 9', 10, 10 'present a substantially rectangular shape with rounded corners.

Comme cela est visible sur la figure 3, il existe dans cette réalisation trois zones d'affaiblissement 11, 11', 11", l'une 11 de ces zones étant située dans le plan des parties planes, ou de l'âme 4, de la joue 1 tandis que les deux autres zones 10, 10' sont situées dans le plan comportant les deux faces ou côtés supérieurs 2', 3' des protubérances 2, 3. A nouveau, dans cette réalisation, grâce à la présence d'au moins deux zones d'affaiblissement 11, 11', 11 " dans des plans parallèles distincts, et a fortiori trois zones comme dans ce second mode d'exécution, la joue 1 est plus rigide et apte à résister à une flexion due à la manipulation et aux phénomènes de dilatation thermique de la joue/corps de l'échangeur (faisceau de tubes situé sous la joue). On notera que, dans ce mode de réalisation, il n'y a pas de rétrécissement ou diminution de la matière au niveau des zones d'affaiblissement 11, 11', 11" mais bien entendu, cette solution de diminution de matière peut être envisagée sur l'une au moins ou pour l'ensemble de ces zones d'affaiblissement.As is visible on the figure 3 in this embodiment, there are three weakening zones 11, 11 ', 11 ", one of which 11 of these zones is situated in the plane of the plane portions, or of the core 4, of the cheek 1 while the two other zones 10, 10 'are situated in the plane comprising the two upper faces or sides 2', 3 'of the protuberances 2, 3. Again, in this embodiment, thanks to the presence of at least two weakening zones 11 , 11 ', 11 "in separate parallel planes, and a fortiori three areas as in this second embodiment, the cheek 1 is more rigid and able to withstand bending due to handling and thermal expansion phenomena of the cheek / body of the exchanger (bundle of tubes located under the cheek) It will be noted that, in this embodiment, there is no shrinkage or decrease of the material at the weakening zones 11, 11 11, but of course this material reduction solution can be envisaged on at least one or all of these weakening zones.

Le troisième mode d'exécution, illustré sur les figures 4, 5 et 6, présente à nouveau une joue 1 identique à celles présentées dans les deux premiers modes d'exécution mais dans laquelle les ouvertures et les zones d'affaiblissement sont différentes.The third embodiment, illustrated on the figures 4 , 5 and 6 again presents a cheek 1 identical to those presented in the first two embodiments but in which the openings and the weakening zones are different.

Dans cet exemple, deux ouvertures 12, 12' s'étendent à partir respectivement des deux bords latéraux opposés tandis que deux autres ouvertures centrales 13, 13', c'est-à-dire à distance des bords latéraux, présentent une forme ou coupe en L. Dans ce mode de réalisation comme dans tous les modes d'exécution, les zones d'affaiblissement 14, 14', 14" s'étendent entre les ouvertures 12, 12', 13, 13'. A nouveau, une zone d'affaiblissement 14 est située dans le plan inférieur, c'est-à-dire le plan formé par les parties planes, ou de l'âme 4, de la joue 1 tandis que deux autres zones d'affaiblissement 14', 14" sont situées dans le plan formé par, ou comportant, les faces ou côtés supérieurs 2', 3' des protubérances 2, 3, ces deux plans étant bien des plans parallèles.In this example, two openings 12, 12 'extend respectively from the two opposite side edges, while two other central openings 13, 13', ie away from the side edges, have a shape or shape. In this embodiment, as in all the embodiments, the weakening zones 14, 14 ', 14 "extend between the openings 12, 12', 13, 13 '. 14 is located in the lower plane, that is to say the plane formed by the plane portions, or the core 4, the cheek 1 while two other weakening areas 14 ', 14 " are located in the plane formed by, or having, the upper faces or sides 2 ', 3' of the protuberances 2, 3, these two planes being parallel planes.

Dans cette réalisation, les zones d'affaiblissement 14, 14', 14" ne s'étendent pas dans un même axe, par exemple selon l'axe AA du second mode de réalisation, mais chacun des deux groupes de zones d'affaiblissement 14 et 14', 14", s'étendant respectivement dans les deux plans parallèles susmentionnés, sont alignés dans des axes distincts.In this embodiment, the weakening zones 14, 14 ', 14 "do not extend in the same axis, for example along the axis AA of the second embodiment, but each of the two groups of weakening zones 14 and 14 ', 14 ", respectively extending in the two aforementioned parallel planes, are aligned in separate axes.

Le quatrième mode d'exécution, représenté sur les figures 7 et 8, reprend le second mode d'exécution des figures 2 et 3 et ajoute un rétrécissement ou une diminution de matière 15 des zones d'affaiblissement 11, 11', 11". Cette diminution de matière 15 pourra être d'au moins 1/3 de l'épaisseur de matière de la joue 1, sensiblement égale sur ses autres parties, par exemple une réduction de matière 15 de la moitié de l'épaisseur de la tôle formant la joue 1.The fourth mode of execution, represented on the figures 7 and 8 , resumes the second mode of execution of figures 2 and 3 and adds a narrowing or a reduction in material of the weakening zones 11, 11 ', 11 ". This reduction in material may be at least 1/3 of the thickness of the material of the cheek 1, substantially equal to on its other parts, for example a material reduction of half the thickness of the sheet forming the cheek 1.

Comme illustré sur la figure 9, cette diminution ou retrait de matière pourra présenter une section sensiblement en forme de triangle, inversé sur la figure 9 car réalisé à partir de la face supérieure de la joue. Bien entendu, on pourra prévoir de réaliser cette diminution ou retrait de matière 15 à partir de la face inférieure de la joue 1 et/ou que cette diminution de matière présente une section ou forme différente de celle représentée ici.As illustrated on the figure 9 , this reduction or withdrawal of material may have a section substantially in the form of a triangle, inverted on the figure 9 because made from the upper face of the cheek. Of course, it will be possible to make this reduction or withdrawal of material 15 from the lower face of the cheek 1 and / or that this decrease in material has a section or shape different from that shown here.

Le cinquième mode de réalisation, présenté sur les figures 10 et 11, reprend également le second mode de réalisation en variant la forme des ouvertures 9, 9', 10, 10'. Ici, les ouvertures 9, 9', 10, 10' présentent toujours une forme sensiblement rectangulaire mais leurs coins présentent une section oblique de sorte que les extrémités des ouvertures présentent une forme de triangle ou en V.The fifth embodiment, presented on the figures 10 and 11 , also takes again the second embodiment by varying the shape of the openings 9, 9 ', 10, 10'. Here, the openings 9, 9 ', 10, 10' always have a substantially rectangular shape but their corners have an oblique section so that the ends of the openings have a shape of triangle or V.

Enfin, le dernier mode d'exécution choisi pour illustrer l'invention, présenté sur les figures 12 et 13, ne se distingue de la seconde réalisation qu'en ce que la joue 1 ne comprend qu'une seule protubérance 2. Ainsi, il existe ici toujours quatre ouvertures 9, 9', 10, 10', dont deux 9, 9' s'étendant à partir des bords opposés latéraux, et deux zones d'affaiblissement 11', 11" sont situées dans le plan inférieur, ou de l'âme 4, de la joue 1 tandis qu'une zone d'affaiblissement 11 est présente sur la face supérieure 2' de la protubérance 2.Finally, the last embodiment chosen to illustrate the invention, presented on the Figures 12 and 13 , differs from the second embodiment in that the cheek 1 comprises only one protrusion 2. Thus, there are always four openings 9, 9 ', 10, 10', including two 9, 9 's extending from the opposite side edges, and two weakening zones 11 ', 11 "are located in the lower plane, or of the core 4, of the cheek 1 while a weakening zone 11 is present on the upper face 2 'of the protuberance 2.

Tous les modes de réalisation présentés ici comportent des caractéristiques qui sont combinables, tout en restant dans le cadre défini par l'invention dans les revendications jointes.All of the embodiments presented herein have features that are combinable, while remaining within the scope defined by the invention in the appended claims.

La présente invention s'applique à tous types d'échangeur nécessitant des joues conçues pour contrer les phénomènes de dilatation et torsion due aux différences thermiques.The present invention applies to all types of exchanger requiring cheeks designed to counter the phenomena of expansion and torsion due to thermal differences.

Claims (15)

  1. End plate (1) for a heat exchanger, running longitudinally, comprising at least one opening (5, 5', 5", 9, 9', 10, 10', 12, 12', 13, 13'), said opening (5, 5', 5", 9, 9', 10, 10', 12, 12', 13, 13') forming a cut in the end plate (1), and at least two areas of weakness (6, 6', 11, 11', 11", 14, 14', 14"), characterized in that said end plate consists in a substantially flat web (4) from which at least one projection (2, 3) extends, the two areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") being situated in distinct parallel planes, respectively in a plane formed by, or comprising, upper faces or sides of the projection or projections (2, 3), and in the plane of the flat web (4).
  2. End plate (1) according to Claim 1, characterized in that the two areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") are the only material elements that form a discontinuity in the cut such that the cut is interrupted only by said two areas of weakness (6, 6', 11, 11', 11", 14, 14', 14").
  3. End plate (1) according to Claim 1, characterized in that it comprises two projections (2, 3) extending from the flat web (4).
  4. End plate (1) according to Claim 1 or 3, characterized in that the projection or projections (2, 3) has(have) a substantially square, rectangular or round cross section.
  5. End plate (1) according to any one of the preceding claims, characterized in that it comprises a plurality of openings (5, 5', 5", 9, 9', 10, 10', 12, 12', 13, 13').
  6. End plate (1) according to any one of the preceding claims, characterized in that the opening or openings (5, 5', 5", 9, 9', 10, 10', 12, 12', 13, 13') extends(extend) linearly, perpendicular to the longitudinal axis of the end plate (1).
  7. End plate (1) according to any one of the preceding claims, characterized in that the areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") have a reduction/decrease in thickness of material (15).
  8. End plate (1) according to any one of the preceding claims, characterized in that at least one of the areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") is situated on a flat portion (4).
  9. End plate (1) according to any one of Claims 1 to 7, characterized in that at least one of the areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") is situated on a curved, bent or sinusoidal portion (7, 7').
  10. End plate (1) according to Claim 9, characterized in that, with said end plate comprising two projections (2, 3), the areas of weakness are present on each of the two projections (2, 3).
  11. End plate (1) according to Claim 1, characterized in that the two areas of weakness (6, 6', 11, 11', 14, 14', 14") are situated respectively on the upper face of the projection (2, 3) and on the flat web (4).
  12. End plate (1) according to Claim 11, characterized in that the areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") are all situated on one and the same linear axis (AA).
  13. End plate (1) according to any one of Claims 1 to 11, characterized in that the areas of weakness (6, 6', 11, 11', 11", 14, 14', 14") are situated on different linear axes.
  14. Heat exchanger, particularly for a motor vehicle, comprising two headers connected by a core of tubes and of inserts, characterized in that it comprises at least one end plate (1) according to any one of the preceding claims.
  15. Heat exchanger according to Claim 14, characterized in that the end plate (1) is fixed to at least one of the ends or sides of the aforesaid core.
EP08102278A 2007-03-29 2008-03-04 Side panel with weakened area for a heat exchanger Active EP1978325B1 (en)

Priority Applications (1)

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PL08102278T PL1978325T3 (en) 2007-03-29 2008-03-04 Side panel with weakened area for a heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702317A FR2914410B1 (en) 2007-03-29 2007-03-29 PLAY WITH WEAKENING AREA FOR A HEAT EXCHANGER.

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EP1978325A1 EP1978325A1 (en) 2008-10-08
EP1978325B1 true EP1978325B1 (en) 2010-09-15

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EP (1) EP1978325B1 (en)
AT (1) ATE481614T1 (en)
DE (1) DE602008002463D1 (en)
ES (1) ES2356462T3 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014222885A1 (en) * 2014-11-10 2016-05-12 Mahle Lnternational Gmbh Heat exchanger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024508A1 (en) * 2010-07-28 2012-02-02 Delphi Technologies, Inc. Reinforcement plate for multiple row heat exchanger

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FR2183375A5 (en) 1972-05-04 1973-12-14 Chausson Usines Sa
US6328098B1 (en) 1998-11-10 2001-12-11 Valeo Inc. Side member for heat exchanger and heat exchanger incorporating side plate
JP2002147973A (en) * 2000-08-30 2002-05-22 Denso Corp Duplex heat exchanger
US6412547B1 (en) * 2000-10-04 2002-07-02 Modine Manufacturing Company Heat exchanger and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014222885A1 (en) * 2014-11-10 2016-05-12 Mahle Lnternational Gmbh Heat exchanger

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FR2914410A1 (en) 2008-10-03
FR2914410B1 (en) 2010-01-22
DE602008002463D1 (en) 2010-10-28
ATE481614T1 (en) 2010-10-15
EP1978325A1 (en) 2008-10-08
ES2356462T3 (en) 2011-04-08
PL1978325T3 (en) 2011-09-30

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