• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Heat exchanger (10) according to the invention comprising: - a bundle of tubes (12); - a water box (14) connected to the tubes (12); - At least one header plate (18) closing the water box (14) and in which open the tubes (12) - a bundle of fins; and - reinforcing means (20) for at least one of the tubes (12), characterized in that the reinforcing means (20) are attached to an outer surface (S) of at least one of the tubes (12) in a zone (Z) without fins and extending between the header plate (18) and an envelope surface (E) defined by the fin bundle.
    公开号:FR3054655A1
    申请号:FR1657376
    申请日:2016-07-29
    公开日:2018-02-02
    发明作者:Kamel Azzouz；Mohamed Asri
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:
    (to be used only for reproduction orders)
    ©) National registration number
    054 655
    57376
    COURBEVOIE © Int Cl 8 : F28 F 9/04 (2017.01)
    PATENT INVENTION APPLICATION
    A1
    ©) Date of filing: 07.29.16. © Applicant (s): VALEO THERMAL SYSTEMS (© Priority: Simplified joint stock company - FR. @ Inventor (s): AZZOUZ KAMEL and ASRI MOHAMED. ©) Date of public availability of the request: 02.02.18 Bulletin 18/05. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): VALEO THERMAL SYSTEMS related: Joint stock company. ©) Extension request (s): © Agent (s): VALEO THERMAL SYSTEMS.
    p4) HEAT EXCHANGER WITH IMPROVED TUBE REINFORCEMENT MEANS.
    FR 3 054 655 - A1 (g) Heat exchanger (10) according to the invention comprising:
    - a bundle of tubes (12);
    - a water box (14) connected to the tubes (12);
    - at least one collecting plate (18) closing the water box (14) and into which the tubes (12) open
    - a bundle of fins; and
    reinforcement means (20) of at least one of the tubes (12), characterized in that the reinforcement means (20) are attached to an external surface (S) of at least one of the tubes (12), in a zone (Z) devoid of fins and extending between the collecting plate (18) and an envelope surface (E) defined by the bundle of fins.

    The present invention relates to a heat exchanger, in particular a heat exchanger intended to equip a motor vehicle.
    A motor vehicle heat exchanger generally comprises tubes, in which a heat transfer fluid is intended to circulate, and heat exchange elements connected to these tubes, also called fins.
    Such a heat exchanger further comprises two water boxes in fluid communication with the tubes being respectively connected to the opposite ends of the tubes. The tubes are held by collecting plates closing each water box. The connection of the tubes to the collector plates is most often carried out by brazing.
    In use, the heat transfer fluid passes cyclically through the tubes from one water box to another so that this fluid exchanges heat with the ambient air in contact with the tubes and the fins to increase or decrease in temperature.
    As a result, the tubes heat or cool periodically, which causes them to contract or expand, which themselves generate stresses at the junction between the tubes and the collector plate. These stresses are the source of fatigue essentially experienced by the end of the tubes where the junction with the collector plate is located.
    To limit the effects of this fatigue on the solidity of the tubes without having to increase the thickness of their walls, which would greatly increase the weight of the exchanger, it has been envisaged, in the prior art, to provide them with means reinforcement. These reinforcing means are generally inserted inside the tube near the junction between the tubes and the collector plate.
    Document US 2007/131404 thus discloses a heat exchanger for a motor vehicle, the tubes of which are provided with reinforcing means intended to be placed inside the tubes and made for this purpose of two wings of complementary shape to the internal surface from the wall of the tube.
    These reinforcing means make it possible to limit the fatigue undergone by the ends of the tubes under the effect of the stresses due to thermal deformations. However, being placed inside the tubes, the reinforcement means limit the cross section of the fluid in the tube, which has the effect of creating undesirable pressure drops in the heat exchanger, thereby reducing its performance.
    The object of the invention is therefore to provide means for reinforcing the ends of the tubes which do not generate pressure drops in the heat exchanger.
    To this end, the invention relates to a heat exchanger comprising:
    - a bundle of tubes;
    - a water box connected to the tubes;
    - at least one collecting plate closing the water box and into which the tubes open;
    - a bundle of fins; and
    - reinforcing means of at least one of the tubes, characterized in that the reinforcing means are attached to an external surface of at least one of the tubes, in a zone extending devoid of fins and extending between the collector plate and an envelope surface of the fin bundle.
    By placing the reinforcing means on an external surface of the tube, in an area devoid of fins and extending between the collector plate and an envelope surface defined by the bundle of fins, the latter do not create any pressure drop since they are not inside the tube.
    In other words, the invention makes it possible to efficiently use an available space between the collector plate and the fin bundle to insert therein tube reinforcing means.
    Preferably, each tube of the bundle is provided with reinforcing means.
    According to an advantageous embodiment of the invention, making it easier to install the reinforcing means on an already assembled heat exchanger, the reinforcing means comprise at least one U-shaped reinforcing element comprising a groove and two branches, the reinforcing element overlapping a tube of generally complementary shape to the reinforcing element.
    The tubes include two large faces and two small faces. Preferably, the branches of the reinforcing element are parallel to each other and the groove of the U is in abutment on a small face of a tube.
    Preferably, the branches of the reinforcing element conform to the shape of the collector plate.
    According to an advantageous embodiment of the invention which makes it possible to further facilitate the installation of the reinforcing means on an already assembled exchanger, the reinforcing means comprise at least one reinforcing member common to several tubes, the member common reinforcement having a general boustrophedon shape defining reinforcement elements each overlapping a tube.
    Preferably, the reinforcing means comprise at least two reinforcing elements arranged on the same tube.
    According to a particular embodiment of the invention, the two reinforcing elements are arranged face to face on the external surface of the same tube so that the respective ends of their branches are joined and the reinforcing elements form to them two a reinforcement surrounding the tube.
    According to a particular embodiment of the invention, the two reinforcing elements are arranged face to face on the outer surface of the same tube so that the respective ends of their branches are spaced.
    According to an advantageous embodiment of the invention which makes it possible to increase the resistance of the tubes while facilitating the installation of the reinforcement means on an already assembled exchanger, the fins being distributed so as to define secondary envelope surfaces separated by the tubes, the reinforcing element comprises a heel which extends partly between two successive secondary envelope surfaces.
    Preferably, the reinforcing means are brazed to the tube.
    Preferably, in order to limit the weight of the heat exchanger, the bundle of tubes, the bundle of fins and the reinforcement means are made of an alloy essentially comprising aluminum.
    The term alloy comprising essentially aluminum means an alloy comprising a majority of moles of aluminum.
    The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the drawings in which:
    - Figure 1 is a perspective view of a heat exchanger comprising reinforcing elements according to a first embodiment of the invention;
    - Figure 2 is a view of the exchanger of Figure 1 along the plane II-II;
    - Figure 3 is a perspective view of a reinforcing member of Figure 1;
    - Figure 4 is a view similar to Figure 2 showing reinforcing elements according to a second embodiment of the invention;
    - Figures 5 and 6 are views similar to Figure 2 of a reinforcing element of a heat exchanger according to third and fourth embodiments of the invention;
    - Figures 7 and 8 are perspective views of a reinforcing member of a heat exchanger comprising reinforcing elements according to fifth and sixth embodiments of the invention;
    There is shown in Figures 1 and 2 a heat exchanger according to an embodiment of the invention designated by the general reference 10.
    The heat exchanger 10 is intended to equip a motor vehicle. The heat exchanger 10 comprises tubes 12, substantially rectilinear, in which a conventional heat transfer fluid is intended to circulate, and heat exchange elements, also called fins, connected to these tubes 12.
    In the embodiment of the invention illustrated in Figure 1, the tubes 12 have a cross section of generally rounded rectangular shape. The tubes 12 are arranged substantially parallel to each other, and aligned, so as to form a single row.
    Each tube 12 thus comprises two long sides and two short sides, and the fins extend, as can be seen in FIG. 1, between the long sides of two successive tubes 12. In the figures, the fins are only represented by their bulk in the heat exchanger 10.
    In known manner, the fins comprise fluid disruptors, of generally rectangular shape and arranged between the tubes 12 transversely to the axis of the tubes 12, so as to create a large heat exchange surface between each tube 12 and outside air. Thus, the fins are preferably connected to an outer surface S of the wall of a tube 12 on the one hand, and to the outer surface S of the wall of a successive tube 12 on the other hand.
    It is thus possible to define an envelope surface E of the fin bundle. More particularly, the heat exchanger 10 comprising several tubes 12 and several fins, it is possible to define secondary envelope surfaces E s separated by the tubes 12 in which the fins are distributed.
    The heat exchanger 10 further comprises a water box 14 in fluid communication with the tubes 12.
    The water box 14 is here composed of a body 16 of the water box closed by a plate 18 usually called a collecting plate.
    The tubes 12 are connected to the water box 14, by their ends, which are generally fitted into nesting orifices provided in said collecting plate 18. Thus the tubes 12 each open into the collecting plate 18.
    The heat exchanger 10 further comprises reinforcing means 20 of at least one tube 12 attached to an external surface S of the tube 12, in a zone Z devoid of fins and extending between the collector plate 18 and the envelope surface E defined by the fin bundle.
    To this end, the reinforcement means 20 are for example brazed on the tubes 12.
    Preferably, in order to reduce the weight of the heat exchanger 10, the reinforcing means 20 are made of an alloy essentially comprising aluminum, as are the tubes 12 and the fins. It will be recalled here that an alloy comprising essentially aluminum means an alloy comprising a majority of moles of aluminum.
    In all the embodiments illustrated in the figures, the reinforcement means 20 comprise at least one reinforcement element 22 provided with branches 24 so that the reinforcement element 22 is in the general shape of U overlapping a contour of a tube 12 of generally complementary shape to the reinforcing element 22.
    A reinforcing element 22 of the heat exchanger 10 according to the first embodiment of the invention is shown alone in FIG. 3.
    In all the embodiments illustrated in the figures, and as can be seen in Figures 1 and 2, the arms 24 of the reinforcing element 22 are parallel and the groove of the U is in abutment on a small side of the tube .
    Thus, the contour of the tube 12 overlapped by the reinforcing element 22 comprises the short side of the tube and a portion of each of the two long sides, the branches 24 being in plan contact with the long sides of the tube 12.
    The reinforcing means 20 of a tube 12 preferably comprise two reinforcing elements 22 disposed on the outer surface S of this tube 12 so as to overlap opposite faces of the tube 12, as can be seen in Figures 1 and 2.
    More particularly, in the first embodiment of the invention, and as can be seen in FIG. 2, two reinforcing elements 22 are arranged face to face on the external surface S of a tube 12 so that the ends 26 respective of their branches 24 are contiguous so that the reinforcing elements 22 together form a reinforcement surrounding the end of the tube 12.
    Conversely, in a second embodiment of the reinforcing elements 22 according to the invention illustrated in FIG. 4, the two reinforcing elements 22 are arranged face to face on the external surface S of a tube 12 so that the respective ends 26 of their branches 24 are spaced.
    Preferably, it is also provided, as can be seen in this FIG. 4, that the branches 24 of each reinforcing element 22 conform to the shape of the collecting plate 18.
    To further strengthen the tubes 12, the reinforcing means 20 may extend partly between two secondary envelope surfaces E s .
    To this end, the reinforcing element 22 may include a heel 28 which, as can be seen in FIG. 1, extends partly between two secondary envelope surfaces E s .
    This effectively exploits the part of the outer surface S of the tubes 12 located between the fins which, being free, can receive a part of the reinforcing element 20. The heel 28 makes it possible in particular to further reinforce a tube 12.
    As can be seen in particular in FIG. 3, the heel 28 is for example a projection which extends, from a joining part 30 connecting the arms 24 of the reinforcing element 22, perpendicularly to the direction of extension of the branches 24. More particularly, the heel extends 28 along a short side of the tube 12 overlapped by the reinforcing element 12.
    The reinforcing element 22 may however have other forms.
    Thus, in a third embodiment of the reinforcing elements 22 according to the invention illustrated in FIG. 5, the reinforcing element 22 does not include a heel 28.
    The shape of the branches 24 of the reinforcing element can also change according to the shape of the collector plate 18.
    Thus, in the first embodiment of the reinforcing elements 22 according to the invention, illustrated in FIGS. 1 to 3, just as in the third embodiment of the reinforcing elements 22 according to the invention illustrated in FIG. 5, the edges 32 of each of the branches 24 of the reinforcing element 22 are curved and complementary to a curved shape of the collector plate 18.
    In a fourth embodiment of the reinforcing elements 22 according to the invention, illustrated in FIG. 6, the branches 24 of the reinforcing element 22 have a generally rectangular shape. Thus, the outer edges 32 of each of the branches 24 of the reinforcing element 22 are parallel.
    In a fifth embodiment of the reinforcing elements 22 according to the invention, illustrated in FIG. 7, the reinforcing means 20 comprise at least one reinforcing member 34 common to several tubes 12, the reinforcing member 34 having a shape general in boustrophedon delimiting reinforcing elements 22 whose branches 24 each overlap a tube 12.
    In other words, the reinforcing member 34 is made up of reinforcing elements 22 connected to each other in order to give the assembly a serpentine shape, or else a slot whose crests would be formed by the parts of junction 30.
    In this fifth embodiment of the reinforcing elements 22 according to the invention, each of the reinforcing elements 22 comprises a heel 28 in the same way as the reinforcing element 22 illustrated in FIG. 3.
    Furthermore, the outer edges 32 of each of the arms 24 of each reinforcing element 22 are curved and complementary to a curved shape of the collecting plate 18, in the same way as the reinforcing element 22 shown in FIG. 5.
    In a sixth embodiment of the reinforcing elements 22 according to the invention illustrated in FIG. 5, none of the reinforcing elements 22 of the common reinforcing member 34 includes a heel 28. Furthermore, the outer edges 32 of each branches 24 of each reinforcing element 22 are parallel, in the same way as the reinforcing element 22 illustrated in FIG. 6.
    In an embodiment of the invention not shown, each tube 12 is provided with reinforcement means 20.
    The invention is not limited to the embodiments presented and other embodiments will be apparent to those skilled in the art.
    The invention relates for example to any combination of the embodiments presented. Thus, a heat exchanger could be envisaged, certain tubes of which are provided with reinforcement means comprising reinforcement elements with heel, while other tubes would be provided with reinforcement means comprising reinforcement elements without heel.
    The invention also relates to a heat exchanger comprising two 5 reinforcing members attached to the outer surfaces of tubes so that the reinforcing elements which it delimits overlap opposite contours of these tubes.
    In this case, the respective ends of the branches of these reinforcing elements can be joined so that the reinforcing elements form reinforcements surrounding the tubes thus overlapped, or on the contrary be spaced.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    1. Heat exchanger (10) comprising:
    - a bundle of tubes (12);
    - a water box (14) connected to the tubes (12);
    - at least one collecting plate (18) closing the water box (14) and into which the tubes (12) open
    - a bundle of fins; and
    reinforcement means (20) of at least one of the tubes (12), characterized in that the reinforcement means (20) are attached to an external surface (S) of at least one of the tubes (12), in an area (Z) devoid of fins and extending between the collector plate (18) and an envelope surface (E) of the fin bundle.
    [2" id="c-fr-0002]
    2. Heat exchanger (10) according to claim 1, wherein each tube (12) is provided with reinforcing means (20).
    [3" id="c-fr-0003]
    3. Heat exchanger (10) according to claim 1 or 2, wherein the reinforcing means (20) comprise at least one U-shaped reinforcing element (22) comprising a groove and two branches (24), the reinforcing element (22) overlapping a tube (12) of general shape complementary to the reinforcing element (22).
    [4" id="c-fr-0004]
    4. Heat exchanger (10) according to claim 3, wherein the tubes (12) comprise two large faces and two small faces, the legs (24) of the reinforcing element (22) are mutually parallel and the groove of the U is in abutment on a small face of a tube (12).
    [5" id="c-fr-0005]
    5. Heat exchanger (10) according to claim 3 or 4, wherein the legs (24) of the reinforcing element (22) conform to the shape of the collector plate (18).
    [6" id="c-fr-0006]
    6. Heat exchanger (10) according to any one of claims 3 to 5, wherein the reinforcing means (20) comprise at least one reinforcing member (34) common to several tubes (12), the member common reinforcement (34) having a general boustrophedon shape defining reinforcement elements (22) each overlapping a tube (12).
    [7" id="c-fr-0007]
    7. Heat exchanger (10) according to any one of claims 3 to 6, wherein the reinforcing means (20) comprise at least two reinforcing elements (22) arranged on the same tube (12).
    [8" id="c-fr-0008]
    8. Heat exchanger (10) according to claim 7, wherein the two reinforcing elements (22) are arranged face to face on the outer surface (S) of the same tube (12) so that the ends (26 ) respective of their branches (24) are contiguous and that the reinforcing elements (22) together form a reinforcement surrounding the tube (12).
    5
    [9" id="c-fr-0009]
    9. Heat exchanger (10) according to claim 7, wherein the two reinforcing elements (22) are arranged face to face on the outer surface (S) of the same tube (12) so that the ends (26 ) of their branches (24) are spaced apart.
    [10" id="c-fr-0010]
    10. Heat exchanger (10) according to any one of claims 3 to 9,
    10 in which, the fins being distributed so as to define secondary envelope surfaces (E s ) separated by the tubes (12), the reinforcing element (22) comprises a heel (28) which partly extends between two successive secondary envelope surfaces (E s ).
    [11" id="c-fr-0011]
    11. Heat exchanger (10) according to any one of the claims
    15 above, in which the reinforcing means (20) are brazed to the tube (12).
    [12" id="c-fr-0012]
    12. Heat exchanger (10) according to any one of the preceding claims, in which the bundle of tubes (12), the bundle of fins and the reinforcing means (20) are made of an alloy essentially comprising aluminum.
    类似技术:
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    FR2884308A1|2006-10-13|SIDE PLATE FOR USE WITH A HEAT EXCHANGER AND METHOD OF MAKING THE EXCHANGER
    FR2904400A1|2008-02-01|TRANSITION ASSEMBLY BETWEEN HEAT EXCHANGER AND EXTERNAL FLOW CIRCUIT, HEAT EXCHANGER, AND METHOD FOR MANUFACTURING THE TRANSITION ASSEMBLY
    EP2795224B1|2015-11-25|Heat exchanger, in particular for a motor vehicle
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    FR3064734A1|2018-10-05|HEAT EXCHANGER WITH U-FLUID CIRCULATION
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    EP1509740B1|2009-11-25|Manifold heat exchanger and manifold chamber of simple construction particularly for a motor vehicle
    WO2020099809A1|2020-05-22|Tube for a heat exchanger
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    EP3411650A1|2018-12-12|Heat exchanger with improved tubes
    EP2901097A1|2015-08-05|Heat exchanger, in particular for a motor vehicle, and associated assembly method
    FR2924492A1|2009-06-05|Flat tube reinforcing unit i.e. metallic rod, for e.g. high temperature heat exchanger, in motor vehicle, has ends respectively inserted at axial ends of contiguous tubes, and central part placed in contact with wall, where unit is extruded
    FR3082927A1|2019-12-27|COLLECTOR BOX AND CORRESPONDING HEAT EXCHANGER
    FR2833691A1|2003-06-20|Fixing support for heat exchanger comprises moulded component attached to manifold by connectors and equipped with fastenings
    FR2769358A1|1999-04-09|Heat exchange tube for motor vehicle radiator
    同族专利:
    公开号 | 公开日
    CN210533100U|2020-05-15|
    EP3491317A1|2019-06-05|
    WO2018020132A1|2018-02-01|
    FR3054655B1|2019-09-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH05141894A|1991-11-19|1993-06-08|Showa Alum Corp|Heat exchanger|
    EP0791796A1|1996-02-26|1997-08-27|MAGNETI MARELLI CLIMATIZZAZIONE S.r.l.|A condenser for vehicle air-conditioning systems|
    JP2007078214A|2005-09-12|2007-03-29|Calsonic Kansei Corp|Heat exchanger for automobile|
    WO2015040857A1|2013-09-20|2015-03-26|株式会社デンソー|Heat exchanger|
    DE202014103206U1|2014-07-11|2015-10-14|Autokühler GmbH & Co. KG|heat exchangers|
    GB2433111B|2005-12-09|2011-03-23|Denso Corp|Heat exchanger|FR3035955B1|2015-05-06|2019-04-19|Valeo Systemes Thermiques|HEAT EXCHANGER HAVING A PROTECTION DEVICE|
    US11073345B2|2018-10-31|2021-07-27|Hanon Systems|Heat exchanger header with stiffening element|
    US10969176B2|2018-12-10|2021-04-06|Denso International America, Inc.|Heat exchanger|
    法律状态:
    2017-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2018-02-02| PLSC| Search report ready|Effective date: 20180202 |
    2018-07-27| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-07-29| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1657376|2016-07-29|
    FR1657376A|FR3054655B1|2016-07-29|2016-07-29|HEAT EXCHANGER WITH REINFORCING MEANS FOR ENHANCED TUBES|FR1657376A| FR3054655B1|2016-07-29|2016-07-29|HEAT EXCHANGER WITH REINFORCING MEANS FOR ENHANCED TUBES|
    EP17758226.9A| EP3491317A1|2016-07-29|2017-07-25|Heat exchanger with improved tube-reinforcing means|
    CN201790001200.6U| CN210533100U|2016-07-29|2017-07-25|Heat exchanger with improved tube reinforcement|
    PCT/FR2017/052057| WO2018020132A1|2016-07-29|2017-07-25|Heat exchanger with improved tube-reinforcing means|
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