WO2024088811A1 - Heat exchanger, in particular for a vehicle - Google Patents

Heat exchanger, in particular for a vehicle Download PDF

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Publication number
WO2024088811A1
WO2024088811A1 PCT/EP2023/078699 EP2023078699W WO2024088811A1 WO 2024088811 A1 WO2024088811 A1 WO 2024088811A1 EP 2023078699 W EP2023078699 W EP 2023078699W WO 2024088811 A1 WO2024088811 A1 WO 2024088811A1
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WO
WIPO (PCT)
Prior art keywords
plate
plates
window
heat exchanger
junction
Prior art date
Application number
PCT/EP2023/078699
Other languages
French (fr)
Inventor
Kamel Azzouz
Yolanda Bravo
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2024088811A1 publication Critical patent/WO2024088811A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • F28D1/0341—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/06—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes composite, e.g. polymers with fillers or fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

  • Heat exchanger in particular for a vehicle
  • the present invention relates to a heat exchanger, in particular for a vehicle.
  • the vehicle may be land, sea or air.
  • This heat exchanger can in particular be integrated into a cooling device for at least one vehicle battery or battery cells, for example a motor vehicle.
  • the invention aims to strengthen the assembly of plates together, in particular by making it possible to use different materials for these plates.
  • the subject of the invention is thus a heat exchanger, in particular for a vehicle, comprising:
  • this second plate having an external periphery, heat exchanger in which the first plate has a junction zone configured to be linked to a junction zone of the second plate, in particular by glue or by fusion of material from one of the first and second plates, and one of the first and second plates includes a window adjacent to said junction zone and inscribed inside the external periphery of the corresponding plate.
  • first and second plates are made of different materials.
  • these plates are made of the same material.
  • the window on one of the plates it is possible to approach an assembly tool, as close as possible to the junction areas to be bonded.
  • the tool makes it possible, for example, to deposit glue on the junction areas or, alternatively, makes it possible to carry out welds and/or to heat the plates to melt material from one of the plates which flows towards the another plate to make the junction, with or without pressing one plate onto the other.
  • a clamping member can be used, which tool exerts pressure as close as possible to the junction zones, the window allowing avoid pressure away from these junction zones because the window corresponds to an absence of material or void which does not receive support pressure.
  • the invention thus makes it possible to reinforce the connection between the first and second plates by producing junction zones which are inside the external peripheries of these plates, along the channels, which also has the effect of improve the tightness of these channels.
  • the window of one of the plates faces a solid region of the other of the plates.
  • the first plate comprises a window and the second plate also comprises a window, and each of these windows faces a solid region of the plate opposite, of so that these windows are blind.
  • the junction zones run along at least one section of the flow channel.
  • the respective junction zones of the first and second plates include a deformation, in particular at least along the window or windows, configured to reinforce the junction between the first and second plates.
  • this deformation corresponds to a stamping or a fold of the plates.
  • At least one of the respective junction zones of the first and second plates comprises a textured surface, in particular at least along the window or windows, configured to reinforce the junction between the first and second plates.
  • the metal plate is for example made of aluminum or steel.
  • One of the plates is for example based on a composite thermoplastic material, with for example a thermoplastic base, and reinforcing fibers such as glass or carbon fibers.
  • This plate can be obtained from a sheet of composite material.
  • the thermoplastic base may include Polyethylene Terephthalate (PET), Polybuthylene Terephthalate (PBT), Polyamide (PA6, PA66 or copolymer, PA46, PPA), polypropylene sulfide (PPS), a material based on polyolefin (PP, PE) or a mixture of these materials.
  • PET Polyethylene Terephthalate
  • PBT Polybuthylene Terephthalate
  • PA6 Polyamide
  • PA66 or copolymer PA46, PPA
  • PPS polypropylene sulfide
  • PP polyolefin
  • PE polyolefin
  • the junction zones of the first and second plates are joined by glue.
  • the junction zones of the first and second plates are joined by glue, and additionally by heating and pressing.
  • the window is an opening with a closed contour.
  • this window is completely inside the external periphery of the corresponding plate.
  • the window is an opening with an open contour.
  • this window is open on the external periphery of the corresponding plate.
  • the window when a single window is present, or the windows, when several windows are present, occupy, in totality, at least 5 % of the total surface area of the corresponding plate.
  • the window when a single window is present, or the windows, when several windows are present, occupy, in totality, at most 45 % or 50% of the total surface area of the corresponding plate.
  • the junction zone(s) extend along the channel(s).
  • the window is made on the plate of thermoplastic material.
  • one of the first and second plates is flat and the other of the first and second plates comprises at least one relief configured to form, once the plates fixed together, the or flow channels.
  • the first plate is flat and the second plate includes the relief configured to form, once the plates are fixed together, the flow channel(s).
  • the relief of the plate to form the channel is a stamping of the corresponding plate.
  • the relief of the plate to form the channel comprises one or more elements attached to the corresponding plate.
  • the relief has a substantially trapezoidal shape.
  • the window is formed between two sections of channel, in particular two sections of the same channel.
  • this channel has a plurality of turns, for example by forming two U's in a row.
  • the window is made on the plate comprising the flow channel(s).
  • the heat exchanger can in particular be integrated into a cooling device for at least one vehicle battery or battery cells, for example a motor vehicle.
  • the heat transfer fluid circulating in the channels is chosen from a refrigerant fluid and glycolated water.
  • the invention also relates to a device for cooling at least one vehicle battery or battery cells, for example a motor vehicle, comprising one or more heat exchangers as mentioned above.
  • the invention also relates to a method of manufacturing a heat exchanger, in particular for a vehicle, comprising the following steps:
  • first plate with the second plate to form at least one flow channel for a heat transfer fluid by joining, in particular by glue or by fusion of material from one of the first and second plates, a junction zone of the first plate to a junction zone of the second plate, one of the first and second plates comprising a window adjacent to said junction zone and inscribed inside the external periphery of the corresponding plate.
  • one of the first and second plates is based on thermoplastic material and the method includes the step of cutting this plate to form the window.
  • one of the first and second plates is based on thermoplastic material and the method comprises a step of stamping this plate to form a relief, in particular a slender cavity, intended to define the flow channel.
  • the junction zones of the first and second plates are joined by heating, preferably by laser radiation, and pressing of these junction zones.
  • the method comprises a step of texturing one of the plates, in particular a metal plate, to leave space for the penetration of the thermoplastic of the other plate, by pressing and/or because the thermoplastic has melted under the effect of heating.
  • the texturing step of one of the plates can be done using a laser which creates this texturing, or alternatively by chemical attack.
  • the junction zones of the first and second plates are joined by glue and/or by a material having melted from one of the plates.
  • the process comprises a step of crosslinking the glue.
  • the crosslinking is carried out by a heating tool which is brought opposite a periphery of the window.
  • this heating tool can be brought as close as possible to the glue, present on the junction areas which border the window.
  • the heating tool is brought to the side of the plate which is provided with the window.
  • the heating tool is, for example, capable of emitting a laser, or of heating by induction.
  • the heating tool is, generally speaking, a heat source capable of locally increasing the temperature of the material.
  • the junction zones of the first and second plates are joined by glue, and additionally by heating and pressing.
  • the glue is for example a methacrylate adhesive, in particular with two components, or a polyurethane adhesive.
  • Figures 1 and 2 show a heat exchanger 1 that can be integrated into a device for cooling motor vehicle battery cells, these cells being placed against the heat exchanger 1 to be cooled.
  • Heat exchanger 1 includes:
  • a second plate 4 assembled with the first plate 2 to form with the first plate 2 a flow channel 5 for a heat transfer fluid, for example a refrigerant fluid or brine, this second plate 4 having an external periphery 6.
  • a heat transfer fluid for example a refrigerant fluid or brine
  • the first plate 2 has a junction zone 10 configured to be linked to a junction zone 11 of the second plate 4, and the second plate 4 comprises a window 12 adjacent to said junction zone 11 and inscribed on the interior of the external periphery 6 of the corresponding plate 4.
  • This window 12 of the second plate 4 faces a solid region 14, which is flat, of the first plate 2. [72] Thus the window 12 is blocked by the opposite plate 2, being a window 12 passing through the plate 4 on which it is formed but which is made blind when the first and second plates 2 and 4 are assembled together.
  • the first plate 2 which is flat, is made of aluminum or steel.
  • the second plate 4 in which the window 12 is made is made of composite thermoplastic material, for example with a thermoplastic base, and possibly reinforcing fibers such as glass or carbon fibers.
  • This plate 4 can be obtained from a sheet of composite material.
  • the thermoplastic base may include Polyethylene Terephthalate (PET), Polybuthylene Terephthalate (PBT), Polyamide (PA6, PA66 or copolymer, PA46, PPA), polypropylene sulfide (PPS), a material based on polyolefin (PP, PE) or a mixture of these materials.
  • PET Polyethylene Terephthalate
  • PBT Polybuthylene Terephthalate
  • PA6 Polyamide
  • PA66 or copolymer PA46, PPA
  • PPS polypropylene sulfide
  • PP polyolefin
  • PE polyolefin
  • junction zones 10 and 11 run along the flow channel 5, over its entire length, between a fluid inlet 15 and a fluid outlet 16.
  • the respective junction zones 10 and 11 of the first and second plates 2 and 4 include a deformation, along the window 12, configured to reinforce the junction between the first and second plates, this deformation corresponding to a stamping or folding of plates 2 and 4.
  • the junction zone 10 of the first plate 2 comprises a textured surface 17, at least along the window 12, configured to reinforce the junction between the first and second plates 2 and 4.
  • Window 12 is an opening with a closed contour, here of substantially rectangular shape. Thus this window 12 is completely inside the external periphery 6 of the corresponding plate 4.
  • Window 12 can have any other suitable shape, circular or polygonal or more complex for example. Several windows can be provided on the same plate 4.
  • window 12 is an opening with an open contour.
  • window 12 occupies, in total, at least 5% of the total surface area of the corresponding plate 4, and at most 45% or 50% of the total surface area of the corresponding plate 4.
  • the second plate 4 comprises a relief 19 configured to form, once the plates 2 and 4 fixed together, the flow channel 5.
  • the relief 19 is a stamping of the plate 4, and has a substantially trapezoidal shape.
  • the window 12 is formed between two rectilinear sections 21 of channel 5.
  • Channel 5 has a plurality of bends, forming two U's in a row.
  • This manufacturing process includes the step of assembling the first plate 2 with the second plate 4 to form the flow channel 5 by joining the junction zones 10 and 11, by heating and pressing these junction zones
  • the textured surface 17 creates space for the penetration of the thermoplastic from the second plate 4 towards this textured surface 17, which has melted under the effect of heating. This allows for strong cohesion between the first and second plates 2 and 4.
  • a heating tool 22 is used brought as close as possible to the junction zones
  • the heating tool 22 is brought to the side of the plate 4 which is provided with the window.
  • junction zones 10 and 11 of the first and second plates 2 and 4 are joined by glue.
  • the process can include a step of crosslinking the glue, and the crosslinking is carried out by a heating tool which is brought opposite a periphery of the window 12.
  • window 12 makes it possible to choose different shapes for the junction zones, shapes likely to improve the structural resistance of the junction zones.
  • junction zones 10 and 11 of the first and second plates 2 and 4 are joined by glue, and additionally by heating and pressing.
  • the first plate 2 has a window 30 and the second plate 4 also has a window 12, and each of these windows 12 and 30 faces each other. of a solid region of the plate in front, so that these windows are blind.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention relates to a heat exchanger (1), in particular for a vehicle, comprising: - a first plate (2) having an outer periphery (3); - a second plate (4) which is assembled with the first plate to form, together with the first plate (2), at least one flow channel (5) for a heat-transfer fluid, this second plate having an outer periphery (6), the heat exchanger, wherein the first plate (2) has a junction region (10) which is configured to be connected to a junction region (11) of the second plate (4), in particular by an adhesive or by melting material of one of the first and second plates, and one of the first and second plates comprises a window (12) which is adjacent to the junction region (11) and is inscribed inside the outer periphery of the corresponding plate (4).

Description

Description Description
Titre de l'invention : Echangeur de chaleur, notamment pour un véhicule Title of the invention: Heat exchanger, in particular for a vehicle
[1] La présente invention concerne un échangeur de chaleur, notamment pour un véhicule. [1] The present invention relates to a heat exchanger, in particular for a vehicle.
[2] Le véhicule peut être de type terrestre, maritime ou aérien. [2] The vehicle may be land, sea or air.
[3] Cet échangeur de chaleur est notamment intégrable dans un dispositif de refroidissement d’au moins une batterie ou cellules de batterie de véhicule, par exemple un véhicule automobile. [3] This heat exchanger can in particular be integrated into a cooling device for at least one vehicle battery or battery cells, for example a motor vehicle.
[4] On connaît par la demande de brevet FR 3 081 981 un échangeur de chaleur comprenant une première plaque d'un premier matériau (matériau métallique) et une deuxième plaque d'un deuxième matériau (matière thermoplastique) distinct du premier matériau, ladite deuxième plaque étant fixée à la première plaque de manière à créer un canal de circulation de fluide de refroidissement, ladite première plaque présentant des anfractuosités au niveau d'une surface de la première plaque située en regard de la deuxième plaque, une partie du deuxième matériau remplissant les anfractuosités de la première plaque. [4] We know from patent application FR 3 081 981 a heat exchanger comprising a first plate of a first material (metallic material) and a second plate of a second material (thermoplastic material) distinct from the first material, said second plate being fixed to the first plate so as to create a cooling fluid circulation channel, said first plate having crevices at a surface of the first plate located opposite the second plate, a part of the second material filling the crevices of the first plate.
[5] L’invention vise à renforcer l’assemblage de plaques entre elles, notamment en permettant d’utiliser des matériaux différents pour ces plaques. [5] The invention aims to strengthen the assembly of plates together, in particular by making it possible to use different materials for these plates.
[6] L’invention a ainsi pour objet un échangeur de chaleur, notamment pour un véhicule, comprenant : [6] The subject of the invention is thus a heat exchanger, in particular for a vehicle, comprising:
- une première plaque présentant un pourtour externe, - a first plate having an external periphery,
- une deuxième plaque assemblée avec la première plaque pour former avec la première plaque au moins un canal d’écoulement pour un fluide caloporteur, cette deuxième plaque présentant un pourtour externe, échangeur de chaleur dans lequel la première plaque présente une zone de jonction configurée pour être liée à une zone de jonction de la deuxième plaque, notamment par une colle ou par fusion de matière de l’une des première et deuxième plaques, et l’une des première et deuxième plaques comporte une fenêtre adjacente à ladite zone de jonction et inscrite à l’intérieur du pourtour externe de la plaque correspondante. - a second plate assembled with the first plate to form with the first plate at least one flow channel for a heat transfer fluid, this second plate having an external periphery, heat exchanger in which the first plate has a junction zone configured to be linked to a junction zone of the second plate, in particular by glue or by fusion of material from one of the first and second plates, and one of the first and second plates includes a window adjacent to said junction zone and inscribed inside the external periphery of the corresponding plate.
[7] Notamment les première et deuxième plaques sont réalisées dans des matières différentes. En variante, ces plaques sont réalisées dans la même matière. [7] In particular the first and second plates are made of different materials. Alternatively, these plates are made of the same material.
[8] L’invention est avantageuse pour les raisons suivantes. [8] The invention is advantageous for the following reasons.
[9] Grâce à la fenêtre sur l’une des plaques, il est possible d’approcher un outil d’assemblage, au plus près des zones de jonction à lier. L’outil permet par exemple de déposer de la colle sur les zones de jonction ou, en variante, permet de réaliser des soudures et/ou de chauffer les plaques pour faire fondre de la matière de l’une des plaques qui flue vers l’autre plaque pour réaliser la jonction, avec ou sans pressage d’une plaque sur l’autre. [9] Thanks to the window on one of the plates, it is possible to approach an assembly tool, as close as possible to the junction areas to be bonded. The tool makes it possible, for example, to deposit glue on the junction areas or, alternatively, makes it possible to carry out welds and/or to heat the plates to melt material from one of the plates which flows towards the another plate to make the junction, with or without pressing one plate onto the other.
[10] Dans le cas où l’assemblage nécessite d’appuyer les plaques l’une contre l’autre, un organe de serrage peut être utilisé, lequel outil exerce une pression au plus proche des zones de jonction, la fenêtre permettant d’éviter une pression à distance de ces zones de jonction car la fenêtre correspond à une absence de matière ou vide qui ne reçoit pas de pression d’appui. [10] In the case where the assembly requires pressing the plates against each other, a clamping member can be used, which tool exerts pressure as close as possible to the junction zones, the window allowing avoid pressure away from these junction zones because the window corresponds to an absence of material or void which does not receive support pressure.
[1 1 ] De plus il est possible d’alléger l’échangeur de chaleur ainsi fabriqué, car la ou les fenêtres représentent d’autant moins de matière sur la plaque. [1 1 ] In addition, it is possible to lighten the heat exchanger thus manufactured, because the window(s) represent even less material on the plate.
[12] L’invention permet ainsi de renforcer la liaison entre les première et deuxième plaques en réalisant des zones de jonction qui sont à l’intérieur des pourtours externes de ces plaques, le long des canaux, ce qui a pour effet également d’améliorer l’étanchéité de ces canaux. [12] The invention thus makes it possible to reinforce the connection between the first and second plates by producing junction zones which are inside the external peripheries of these plates, along the channels, which also has the effect of improve the tightness of these channels.
[13] Selon l’un des aspects de l’invention, la fenêtre de l’une des plaques fait face à une région pleine de l’autre des plaques. [13] According to one aspect of the invention, the window of one of the plates faces a solid region of the other of the plates.
[14] Ainsi ladite fenêtre est bouchée par la plaque opposée, étant une fenêtre traversant la plaque sur laquelle elle est formée mais qui est rendue borgne lorsque les première et deuxième plaques sont assemblées ensemble. [14] Thus said window is blocked by the opposite plate, being a window passing through the plate on which it is formed but which is made blind when the first and second plates are assembled together.
[15] Il est ainsi possible de conserver la rigidité des plaques empilées grâce à la réalisation d’une fenêtre sur l’une seulement des première et deuxième plaques, donc sur un coté seulement de l’empilement. On peut, par exemple, réaliser une fenêtre seulement dans la plaque la moins rigide, l’autre plaque plus rigide conservant la fonction de rigidité. [15] It is thus possible to maintain the rigidity of the stacked plates thanks to the production of a window on only one of the first and second plates, therefore on only one side of the stack. We can, for example, make a window only in the least rigid plate, the other more rigid plate retaining the rigidity function.
[16] Selon l’un des aspects de l’invention, la première plaque comporte une fenêtre et la deuxième plaque comporte elle aussi une fenêtre, et chacune de ces fenêtres est en regard d’une région pleine de la plaque en face, de sorte que ces fenêtres soient borgnes. [16] According to one of the aspects of the invention, the first plate comprises a window and the second plate also comprises a window, and each of these windows faces a solid region of the plate opposite, of so that these windows are blind.
[17] Selon l’un des aspects de l’invention, les zones de jonction longent au moins un tronçon du canal d’écoulement. [17] According to one of the aspects of the invention, the junction zones run along at least one section of the flow channel.
[18] Selon l’un des aspects de l’invention, les zones de jonction respectives des première et deuxième plaques comportent une déformation, notamment au moins le long de la fenêtre ou des fenêtres, configurée pour renforcer la jonction entre les première et deuxième plaques. [18] According to one of the aspects of the invention, the respective junction zones of the first and second plates include a deformation, in particular at least along the window or windows, configured to reinforce the junction between the first and second plates.
[19] Ceci permet d’éviter des risques de fuite de fluide caloporteur, notamment au niveau de la fenêtre ou des fenêtres. [19] This helps avoid risks of heat transfer fluid leaks, particularly at the window or windows.
[20] Selon l’un des aspects de l’invention, cette déformation correspond à un emboutissage ou un pli des plaques. [20] According to one of the aspects of the invention, this deformation corresponds to a stamping or a fold of the plates.
[21] Selon l’un des aspects de l’invention, l’une au moins des zones de jonction respectives des première et deuxième plaques comporte une surface texturée, notamment au moins le long de la fenêtre ou des fenêtres, configurée pour renforcer la jonction entre les première et deuxième plaques. [21] According to one of the aspects of the invention, at least one of the respective junction zones of the first and second plates comprises a textured surface, in particular at least along the window or windows, configured to reinforce the junction between the first and second plates.
[22] Ceci est particulièrement adapté lorsque, pour assembler les première et deuxième plaques, il est utilisé un procédé dans lequel le chauffage et le pressage sont utilisés. Le cas échéant, la texturation de l’une des plaques, notamment une plaque métallique, permet de laisser de l'espace pour la pénétration du plastique de l’autre plaque. [22] This is particularly suitable when, to join the first and second plates, a process is used in which heating and pressing are used. If necessary, the texturing of one of the plates, in particular a metal plate, allows space for the penetration of the plastic of the other plate.
[23] Le pressage n’est alors effectué que dans la zone de jonction longeant le canal, évitant ainsi toute déformation dans des zones qui sont plus éloignées du canal ou des canaux, afin d’éviter de générer des défauts de planéité des plaques par pressage. [24] La plaque métallique est par exemple en aluminium ou acier. [23] Pressing is then carried out only in the junction zone running along the channel, thus avoiding any deformation in areas which are further away from the channel or channels, in order to avoid generating flatness defects in the plates by pressing. [24] The metal plate is for example made of aluminum or steel.
[25] L’une des plaques est par exemple à base d’une matière thermoplastique composite, avec par exemple une base en thermoplastique, et des fibres de renfort telles que des fibres de verre ou de carbone. Cette plaque peut être obtenue à partir d’une feuille en matière composite. [25] One of the plates is for example based on a composite thermoplastic material, with for example a thermoplastic base, and reinforcing fibers such as glass or carbon fibers. This plate can be obtained from a sheet of composite material.
[26] La base en thermoplastique peut comprendre du Polyéthylène Terephtalate (PET), du Polybuthylene Terephtalate (PBT), du Polyamide (PA6, PA66 ou copolymère, PA46, PPA), du sulfure de polypropylène (PPS), un matériau à base de polyoléfine (PP, PE) ou un mélange de ces matériaux. [26] The thermoplastic base may include Polyethylene Terephthalate (PET), Polybuthylene Terephthalate (PBT), Polyamide (PA6, PA66 or copolymer, PA46, PPA), polypropylene sulfide (PPS), a material based on polyolefin (PP, PE) or a mixture of these materials.
[27] Selon l’un des aspects de l’invention, les zones de jonction des première et deuxième plaques sont jointes par une colle. [27] According to one of the aspects of the invention, the junction zones of the first and second plates are joined by glue.
[28] Selon l’un des aspects de l’invention, les zones de jonction des première et deuxième plaques sont jointes par une colle, et additionnellement par chauffage et pressage. [28] According to one of the aspects of the invention, the junction zones of the first and second plates are joined by glue, and additionally by heating and pressing.
[29] Selon l’un des aspects de l’invention, la fenêtre est une ouverture à contour fermé. Ainsi cette fenêtre est totalement à l’intérieur du pourtour externe de la plaque correspondante. [29] According to one of the aspects of the invention, the window is an opening with a closed contour. Thus this window is completely inside the external periphery of the corresponding plate.
[30] Selon l’un des aspects de l’invention, la fenêtre est une ouverture à contour ouvert. Ainsi cette fenêtre est ouverte sur le pourtour externe de la plaque correspondante. [30] According to one aspect of the invention, the window is an opening with an open contour. Thus this window is open on the external periphery of the corresponding plate.
[31] Selon l’un des aspects de l’invention, plusieurs fenêtres sont prévues sur la même plaque. [31] According to one aspect of the invention, several windows are provided on the same plate.
[32] Selon l’un des aspects de l’invention, sur l’une des plaques, la fenêtre, lorsqu’une seule fenêtre est présente, ou les fenêtres, lorsque plusieurs fenêtres sont présentes, occupent, en totalité, au moins 5% de la superficie totale de la plaque correspondante. [32] According to one of the aspects of the invention, on one of the plates, the window, when a single window is present, or the windows, when several windows are present, occupy, in totality, at least 5 % of the total surface area of the corresponding plate.
[33] Selon l’un des aspects de l’invention, sur l’une des plaques, la fenêtre, lorsqu’une seule fenêtre est présente, ou les fenêtres, lorsque plusieurs fenêtres sont présentes, occupent, en totalité, au plus 45% ou 50% de la superficie totale de la plaque correspondante. [34] Selon l’un des aspects de l’invention, la ou les zones de jonctions s’étendent le long du ou des canaux. [33] According to one of the aspects of the invention, on one of the plates, the window, when a single window is present, or the windows, when several windows are present, occupy, in totality, at most 45 % or 50% of the total surface area of the corresponding plate. [34] According to one of the aspects of the invention, the junction zone(s) extend along the channel(s).
[35] Ainsi est assurée l’étanchéité des canaux, le long de ceux-ci, à l’interface des première et deuxième plaques. [35] This ensures the sealing of the channels, along them, at the interface of the first and second plates.
[36] Selon l’un des aspects de l’invention, la fenêtre est réalisée sur la plaque en matière thermoplastique. [36] According to one of the aspects of the invention, the window is made on the plate of thermoplastic material.
[37] Selon l’un des aspects de l’invention, l’une des première et deuxième plaques est plane et l’autre des première et deuxième plaques comprend au moins un relief configuré pour former, une fois les plaques fixées ensemble, le ou les canaux d’écoulement. De préférence, la première plaque est plane et la deuxième plaque comprend le relief configuré pour former, une fois les plaques fixées ensemble, le ou les canaux d’écoulement. [37] According to one of the aspects of the invention, one of the first and second plates is flat and the other of the first and second plates comprises at least one relief configured to form, once the plates fixed together, the or flow channels. Preferably, the first plate is flat and the second plate includes the relief configured to form, once the plates are fixed together, the flow channel(s).
[38] Ainsi la circonférence interne du canal est formée, pour une partie, par le relief de l’une des plaques et, pour le restant de la circonférence, par le plat de l’autre plaque. [38] Thus the internal circumference of the canal is formed, for part, by the relief of one of the plates and, for the remainder of the circumference, by the flat of the other plate.
[39] Selon l’un des aspects de l’invention, le relief de la plaque pour former le canal est un embouti de la plaque correspondante. [39] According to one of the aspects of the invention, the relief of the plate to form the channel is a stamping of the corresponding plate.
[40] Selon l’un des aspects de l’invention, le relief de la plaque pour former le canal comprend un ou plusieurs éléments rapportés sur la plaque correspondante. [40] According to one of the aspects of the invention, the relief of the plate to form the channel comprises one or more elements attached to the corresponding plate.
[41] Selon l’un des aspects de l’invention, le relief présente une forme sensiblement trapézoïdale. [41] According to one of the aspects of the invention, the relief has a substantially trapezoidal shape.
[42] Selon l’un des aspects de l’invention, la fenêtre est formée entre deux tronçons de canal, notamment deux tronçons du même canal. [42] According to one of the aspects of the invention, the window is formed between two sections of channel, in particular two sections of the same channel.
[43] Selon l’un des aspects de l’invention, ce canal présente une pluralité de virages, par exemple en formant deux U à la suite. [43] According to one of the aspects of the invention, this channel has a plurality of turns, for example by forming two U's in a row.
[44] Selon l’un des aspects de l’invention, la fenêtre est réalisée sur la plaque comprenant le ou les canaux d’écoulement. [45] L’échangeur de chaleur est notamment intégrable dans un dispositif de refroidissement d’au moins une batterie ou cellules de batterie de véhicule, par exemple un véhicule automobile. [44] According to one of the aspects of the invention, the window is made on the plate comprising the flow channel(s). [45] The heat exchanger can in particular be integrated into a cooling device for at least one vehicle battery or battery cells, for example a motor vehicle.
[46] Selon l’un des aspects de l’invention, le fluide caloporteur circulant dans les canaux est choisi parmi un fluide réfrigérant et eau glycolée. [46] According to one of the aspects of the invention, the heat transfer fluid circulating in the channels is chosen from a refrigerant fluid and glycolated water.
[47] L’invention a également pour objet un dispositif de refroidissement d’au moins une batterie ou cellules de batterie de véhicule, par exemple un véhicule automobile, comprenant un ou plusieurs échangeurs de chaleur tels que précités. [47] The invention also relates to a device for cooling at least one vehicle battery or battery cells, for example a motor vehicle, comprising one or more heat exchangers as mentioned above.
[48] L’invention a encore pour objet un procédé de fabrication d’un échangeur de chaleur, notamment pour un véhicule, comportant les étapes suivantes : [48] The invention also relates to a method of manufacturing a heat exchanger, in particular for a vehicle, comprising the following steps:
- fournir une première plaque présentant un pourtour externe, - provide a first plate having an external periphery,
- fournir une deuxième plaque présentant un pourtour externe, - provide a second plate with an external perimeter,
- assembler la première plaque avec la deuxième plaque pour former au moins un canal d’écoulement pour un fluide caloporteur en joignant, notamment par une colle ou par fusion de matière de l’une des première et deuxième plaques, une zone de jonction de la première plaque à une zone de jonction de la deuxième plaque, l’une des première et deuxième plaques comportant une fenêtre adjacente à ladite zone de jonction et inscrite à l’intérieur du pourtour externe de la plaque correspondante. - assemble the first plate with the second plate to form at least one flow channel for a heat transfer fluid by joining, in particular by glue or by fusion of material from one of the first and second plates, a junction zone of the first plate to a junction zone of the second plate, one of the first and second plates comprising a window adjacent to said junction zone and inscribed inside the external periphery of the corresponding plate.
[49] Selon l’un des aspects de l’invention, l’une des première et deuxième plaques est à base de matière thermoplastique et le procédé comporte l’étape de découpe de cette plaque pour former la fenêtre. [49] According to one of the aspects of the invention, one of the first and second plates is based on thermoplastic material and the method includes the step of cutting this plate to form the window.
[50] Selon l’un des aspects de l’invention, l’une des première et deuxième plaques est à base de matière thermoplastique et le procédé comporte une étape d’emboutissage de cette plaque pour former un relief, notamment une cavité longiligne, destiné à définir le canal d’écoulement. [50] According to one of the aspects of the invention, one of the first and second plates is based on thermoplastic material and the method comprises a step of stamping this plate to form a relief, in particular a slender cavity, intended to define the flow channel.
[51] Selon l’un des aspects de l’invention, les zones de jonction des première et deuxième plaques sont jointes par chauffage, de préférence par rayonnement laser, et pressage de ces zones de jonction. [52] Selon l’un des aspects de l’invention, le procédé comporte une étape de texturation de l’une des plaques, notamment une plaque métallique, pour laisser de l'espace pour la pénétration du thermoplastique de l’autre plaque, par pressage et/ou parce que le thermoplastique a fondu sous l'effet du chauffage. [51] According to one of the aspects of the invention, the junction zones of the first and second plates are joined by heating, preferably by laser radiation, and pressing of these junction zones. [52] According to one of the aspects of the invention, the method comprises a step of texturing one of the plates, in particular a metal plate, to leave space for the penetration of the thermoplastic of the other plate, by pressing and/or because the thermoplastic has melted under the effect of heating.
[53] L’étape de texturation de l’une des plaques peut être faite l’aide d’un laser qui crée cette texturation, ou en variante par attaque chimique. [53] The texturing step of one of the plates can be done using a laser which creates this texturing, or alternatively by chemical attack.
[54] Selon l’un des aspects de l’invention, les zones de jonction des première et deuxième plaques sont jointes par une colle et/ou par une matière ayant fondu de l’une des plaques. [54] According to one of the aspects of the invention, the junction zones of the first and second plates are joined by glue and/or by a material having melted from one of the plates.
[55] Selon l’un des aspects de l’invention, le procédé comporte une étape de réticulation de la colle. [55] According to one of the aspects of the invention, the process comprises a step of crosslinking the glue.
[56] Selon l’un des aspects de l’invention, la réticulation est réalisée par un outil chauffage qui est amené en regard d’un pourtour de la fenêtre. [56] According to one of the aspects of the invention, the crosslinking is carried out by a heating tool which is brought opposite a periphery of the window.
[57] Ainsi cet outil de chauffage peut être amené au plus près de la colle, présente sur les zones de jonction qui bordent la fenêtre. [57] Thus this heating tool can be brought as close as possible to the glue, present on the junction areas which border the window.
[58] Selon l’un des aspects de l’invention, l’outil de chauffage est amené du côté de la plaque qui est pourvue de la fenêtre. [58] According to one of the aspects of the invention, the heating tool is brought to the side of the plate which is provided with the window.
[59] L’outil de chauffage est par exemple capable d’émettre un laser, ou de chauffer par induction. L’outil de chauffage est, d’une manière générale, une source de chaleur capable d’augmenter localement la température de la matière. [59] The heating tool is, for example, capable of emitting a laser, or of heating by induction. The heating tool is, generally speaking, a heat source capable of locally increasing the temperature of the material.
[60] Dans le cas du collage, la présence de la fenêtre permet de choisir différentes formes pour les zones de jonction, formes susceptibles d’améliorer la résistance structurelle des zones de jonction. [60] In the case of bonding, the presence of the window makes it possible to choose different shapes for the junction zones, shapes likely to improve the structural resistance of the junction zones.
[61] Le cas échéant, il est possible d’appliquer, avec précision, la colle le long de la fenêtre, en même temps que cette colle déposée est réticulée par l’outil de chauffage. [61] If necessary, it is possible to apply the glue precisely along the window, at the same time as this deposited glue is crosslinked by the heating tool.
[62] Selon l’un des aspects de l’invention, les zones de jonction des première et deuxième plaques sont jointes par une colle, et additionnellement par chauffage et pressage. La colle est par exemple un adhésif méthacrylate, notamment avec deux composants, ou un adhésif polyuréthane. [63] D’autres caractéristiques et avantages de l’invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d’exemple illustratif et non limitatif, et des dessins annexés parmi lesquels : [62] According to one of the aspects of the invention, the junction zones of the first and second plates are joined by glue, and additionally by heating and pressing. The glue is for example a methacrylate adhesive, in particular with two components, or a polyurethane adhesive. [63] Other characteristics and advantages of the invention will appear more clearly on reading the following description, given by way of illustrative and non-limiting example, and the appended drawings among which:
[64] - la [Figure 1] illustre, schématiquement et partiellement, un échangeur de chaleur selon un exemple de mise en oeuvre de l’invention ; [64] - [Figure 1] illustrates, schematically and partially, a heat exchanger according to an example of implementation of the invention;
[65] - la [Figure 2] illustre, schématiquement et partiellement, en coupe, l’échangeur de chaleur de la figure 1 ; [65] - [Figure 2] illustrates, schematically and partially, in section, the heat exchanger of Figure 1;
[66] - la [Figure 3] illustre, schématiquement et partiellement, une texturation de l’une des plaques d’échangeur de chaleur selon un exemple de mise en oeuvre de l’invention ; [66] - [Figure 3] illustrates, schematically and partially, a texturing of one of the heat exchanger plates according to an example of implementation of the invention;
[67] - la [Figure 4] illustre, schématiquement et partiellement, un échangeur de chaleur selon un autre exemple de mise en oeuvre de l’invention. [67] - [Figure 4] illustrates, schematically and partially, a heat exchanger according to another example of implementation of the invention.
[68] On a représenté, sur les figures 1 et 2, un échangeur de chaleur 1 intégrable dans un dispositif de refroidissement de cellules de batterie de véhicule automobile, ces cellules étant posées contre l’échangeur de chaleur 1 pour être refroidies. [68] Figures 1 and 2 show a heat exchanger 1 that can be integrated into a device for cooling motor vehicle battery cells, these cells being placed against the heat exchanger 1 to be cooled.
[69] L’échangeur de chaleur 1 comporte : [69] Heat exchanger 1 includes:
- une première plaque 2 présentant un pourtour externe 3, - a first plate 2 having an external periphery 3,
- une deuxième plaque 4 assemblée avec la première plaque 2 pour former avec la première plaque 2 un canal d’écoulement 5 pour un fluide caloporteur, par exemple un fluide réfrigérant ou une eau glycolée, cette deuxième plaque 4 présentant un pourtour externe 6. - a second plate 4 assembled with the first plate 2 to form with the first plate 2 a flow channel 5 for a heat transfer fluid, for example a refrigerant fluid or brine, this second plate 4 having an external periphery 6.
[70] La première plaque 2 présente une zone de jonction 10 configurée pour être liée à une zone de jonction 11 de la deuxième plaque 4, et la deuxième plaque 4 comporte une fenêtre 12 adjacente à ladite zone de jonction 11 et inscrite à l’intérieur du pourtour externe 6 de la plaque 4 correspondante. [70] The first plate 2 has a junction zone 10 configured to be linked to a junction zone 11 of the second plate 4, and the second plate 4 comprises a window 12 adjacent to said junction zone 11 and inscribed on the interior of the external periphery 6 of the corresponding plate 4.
[71] Cette fenêtre 12 de la deuxième plaque 4 fait face à une région pleine 14, qui est plane, de la première plaque 2. [72] Ainsi la fenêtre 12 est bouchée par la plaque 2 opposée, étant une fenêtre 12 traversant la plaque 4 sur laquelle elle est formée mais qui est rendue borgne lorsque les première et deuxième plaques 2 et 4 sont assemblées ensemble. [71] This window 12 of the second plate 4 faces a solid region 14, which is flat, of the first plate 2. [72] Thus the window 12 is blocked by the opposite plate 2, being a window 12 passing through the plate 4 on which it is formed but which is made blind when the first and second plates 2 and 4 are assembled together.
[73] Il est ainsi possible de conserver la rigidité des plaques 2 et 4 empilées grâce à la réalisation d’une fenêtre 12 sur l’une seulement des première et deuxième plaques 2 et 4, donc sur un coté seulement de l’empilement. [73] It is thus possible to maintain the rigidity of the stacked plates 2 and 4 thanks to the production of a window 12 on only one of the first and second plates 2 and 4, therefore on only one side of the stack.
[74] La première plaque 2, qui est plane, est en aluminium ou acier. [74] The first plate 2, which is flat, is made of aluminum or steel.
[75] La deuxième plaque 4, dans laquelle est réalisée la fenêtre 12, est en matière thermoplastique composite, avec par exemple une base en thermoplastique, et éventuellement des fibres de renfort telles que des fibres de verre ou de carbone. Cette plaque 4 peut être obtenue à partir d’une feuille en matière composite. [75] The second plate 4, in which the window 12 is made, is made of composite thermoplastic material, for example with a thermoplastic base, and possibly reinforcing fibers such as glass or carbon fibers. This plate 4 can be obtained from a sheet of composite material.
[76] La base en thermoplastique peut comprendre du Polyéthylène Terephtalate (PET), du Polybuthylene Terephtalate (PBT), du Polyamide (PA6, PA66 ou copolymère, PA46, PPA), du sulfure de polypropylène (PPS), un matériau à base de polyoléfine (PP, PE) ou un mélange de ces matériaux. [76] The thermoplastic base may include Polyethylene Terephthalate (PET), Polybuthylene Terephthalate (PBT), Polyamide (PA6, PA66 or copolymer, PA46, PPA), polypropylene sulfide (PPS), a material based on polyolefin (PP, PE) or a mixture of these materials.
[77] Les zones de jonction 10 et 11 longent le canal d’écoulement 5, sur toute la longueur de celui-ci, entre une entrée de fluide 15 et une sortie de fluide 16. [77] The junction zones 10 and 11 run along the flow channel 5, over its entire length, between a fluid inlet 15 and a fluid outlet 16.
[78] Optionnellement, les zones de jonction 10 et 1 1 respectives des première et deuxième plaques 2 et 4 comportent une déformation, le long de la fenêtre 12, configurée pour renforcer la jonction entre les première et deuxième plaques, cette déformation correspondant à un emboutissage ou un pli des plaques 2 et 4. [78] Optionally, the respective junction zones 10 and 11 of the first and second plates 2 and 4 include a deformation, along the window 12, configured to reinforce the junction between the first and second plates, this deformation corresponding to a stamping or folding of plates 2 and 4.
[79] Dans l’exemple décrit, comme illustré sur la figure 3, la zone de jonction 10 de la première plaque 2 comporte une surface texturée 17, au moins le long de la fenêtre 12, configurée pour renforcer la jonction entre les première et deuxième plaques 2 et 4. [79] In the example described, as illustrated in Figure 3, the junction zone 10 of the first plate 2 comprises a textured surface 17, at least along the window 12, configured to reinforce the junction between the first and second plates 2 and 4.
[80] La fenêtre 12 est une ouverture à contour fermé, ici de forme sensiblement rectangulaire. Ainsi cette fenêtre 12 est totalement à l’intérieur du pourtour externe 6 de la plaque correspondante 4. [81 ] La fenêtre 12 peut présenter toute autre forme adaptée, circulaire ou polygonale ou plus complexe par exemple. Plusieurs fenêtres peuvent prévues sur la même plaque 4. [80] Window 12 is an opening with a closed contour, here of substantially rectangular shape. Thus this window 12 is completely inside the external periphery 6 of the corresponding plate 4. [81] Window 12 can have any other suitable shape, circular or polygonal or more complex for example. Several windows can be provided on the same plate 4.
[82] Dans une variante non illustrée, la fenêtre 12 est une ouverture à contour ouvert. [82] In a variant not illustrated, window 12 is an opening with an open contour.
[83] Sur la plaque 4, la fenêtre 12 occupe, en totalité, au moins 5% de la superficie totale de la plaque 4 correspondante, et au plus 45% ou 50% de la superficie totale de la plaque 4 correspondante. [83] On plate 4, window 12 occupies, in total, at least 5% of the total surface area of the corresponding plate 4, and at most 45% or 50% of the total surface area of the corresponding plate 4.
[84] La deuxième plaque 4 comprend un relief 19 configuré pour former, une fois les plaques 2 et 4 fixées ensemble, le canal d’écoulement 5. [84] The second plate 4 comprises a relief 19 configured to form, once the plates 2 and 4 fixed together, the flow channel 5.
[85] Ainsi la circonférence 20 interne du canal d’écoulement 5 est formée, pour une partie, par le relief 19 de la deuxième plaque 4 et, pour le restant de la circonférence, par le plat de première plaque 2. [85] Thus the internal circumference 20 of the flow channel 5 is formed, for part, by the relief 19 of the second plate 4 and, for the remainder of the circumference, by the flat of the first plate 2.
[86] Le relief 19 est un embouti de la plaque 4, et présente une forme sensiblement trapézoïdale. [86] The relief 19 is a stamping of the plate 4, and has a substantially trapezoidal shape.
[87] Dans l’exemple décrit, la fenêtre 12 est formée entre deux tronçons rectilignes 21 de canal 5. [87] In the example described, the window 12 is formed between two rectilinear sections 21 of channel 5.
[88] Le canal 5 présente une pluralité de virages, en formant deux U à la suite. [88] Channel 5 has a plurality of bends, forming two U's in a row.
[89] Nous allons maintenant décrire le procédé de fabrication de l’échangeur de chaleur 1 . [89] We will now describe the manufacturing process of the heat exchanger 1.
[90] Ce procédé de fabrication comporte l’étape d’assembler la première plaque 2 avec la deuxième plaque 4 pour former le canal d’écoulement 5 en joignant les zones de jonction 10 et 11 , par chauffage et pressage de ces zones de jonction[90] This manufacturing process includes the step of assembling the first plate 2 with the second plate 4 to form the flow channel 5 by joining the junction zones 10 and 11, by heating and pressing these junction zones
10 et 11 . 10 and 11.
[91 ] La surface texturée 17 crée de l'espace pour la pénétration du thermoplastique de la deuxième plaque 4 vers cette surface texturée 17, qui a fondu sous l'effet du chauffage. Ceci permet d’avoir une cohésion forte entre les première et deuxième plaques 2 et 4. [91] The textured surface 17 creates space for the penetration of the thermoplastic from the second plate 4 towards this textured surface 17, which has melted under the effect of heating. This allows for strong cohesion between the first and second plates 2 and 4.
[92] Est utilisé un outil de chauffage 22 amené au plus près des zones de jonction[92] A heating tool 22 is used brought as close as possible to the junction zones
10 et 11 bordant la fenêtre 12. [93] L’outil de chauffage 22 est amené du côté de la plaque 4 qui est pourvue de la fenêtre. 10 and 11 bordering window 12. [93] The heating tool 22 is brought to the side of the plate 4 which is provided with the window.
[94] Dans un autre exemple de mise en oeuvre de l’invention, les zones de jonction 10 et 11 des première et deuxième plaques 2 et 4 sont jointes par une colle. [94] In another example of implementation of the invention, the junction zones 10 and 11 of the first and second plates 2 and 4 are joined by glue.
[95] Dans ce cas, le procédé peut comporter une étape de réticulation de la colle, et la réticulation est réalisée par un outil chauffage qui est amené en regard d’un pourtour de la fenêtre 12. [95] In this case, the process can include a step of crosslinking the glue, and the crosslinking is carried out by a heating tool which is brought opposite a periphery of the window 12.
[96] Dans le cas du collage, la présence de la fenêtre 12 permet de choisir différentes formes pour les zones de jonction, formes susceptibles d’améliorer la résistance structurelle des zones de jonction. [96] In the case of bonding, the presence of window 12 makes it possible to choose different shapes for the junction zones, shapes likely to improve the structural resistance of the junction zones.
[97] Selon l’un des aspects de l’invention, les zones de jonction 10 et 11 des première et deuxième plaques 2 et 4 sont jointes par une colle, et additionnellement par chauffage et pressage. [97] According to one of the aspects of the invention, the junction zones 10 and 11 of the first and second plates 2 and 4 are joined by glue, and additionally by heating and pressing.
[98] Dans un autre exemple de réalisation de l’invention illustrée à la figure 4, la première plaque 2 comporte une fenêtre 30 et la deuxième plaque 4 comporte elle aussi une fenêtre 12, et chacune de ces fenêtres 12 et 30 est en regard d’une région pleine de la plaque en face, de sorte que ces fenêtres soient borgnes. [98] In another embodiment of the invention illustrated in Figure 4, the first plate 2 has a window 30 and the second plate 4 also has a window 12, and each of these windows 12 and 30 faces each other. of a solid region of the plate in front, so that these windows are blind.

Claims

Revendications Claims
[Revendication 1 ] Echangeur de chaleur (1 ), notamment pour un véhicule, comprenant : [Claim 1] Heat exchanger (1), in particular for a vehicle, comprising:
- une première plaque (2) présentant un pourtour externe (3), - a first plate (2) having an external periphery (3),
- une deuxième plaque (4) assemblée avec la première plaque pour former avec la première plaque (2) au moins un canal d’écoulement (5) pour un fluide caloporteur, cette deuxième plaque présentant un pourtour externe (6), échangeur de chaleur dans lequel la première plaque (2) présente une zone de jonction (10) configurée pour être liée à une zone de jonction (11 ) de la deuxième plaque (4), notamment par une colle ou par fusion de matière de l’une des première et deuxième plaques, et l’une des première et deuxième plaques comporte une fenêtre (12) adjacente à ladite zone de jonction (11 ) et inscrite à l’intérieur du pourtour externe de la plaque (4) correspondante.- a second plate (4) assembled with the first plate to form with the first plate (2) at least one flow channel (5) for a heat transfer fluid, this second plate having an external periphery (6), heat exchanger in which the first plate (2) has a junction zone (10) configured to be linked to a junction zone (11) of the second plate (4), in particular by glue or by fusion of material from one of the first and second plates, and one of the first and second plates comprises a window (12) adjacent to said junction zone (11) and inscribed inside the external periphery of the corresponding plate (4).
[Revendication 2] Echangeur de chaleur selon la revendication précédente, dans lequel la fenêtre (12) de l’une des plaques fait face à une région pleine (14) de l’autre des plaques. [Claim 2] Heat exchanger according to the preceding claim, in which the window (12) of one of the plates faces a solid region (14) of the other of the plates.
[Revendication 3] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel la première plaque (2) comporte une fenêtre (30) et la deuxième plaque (4) comporte elle aussi une fenêtre (12), et chacune de ces fenêtres est en regard d’une région pleine (14) de la plaque en face, de sorte que ces fenêtres soient borgnes. [Claim 3] Heat exchanger according to one of the preceding claims, in which the first plate (2) comprises a window (30) and the second plate (4) also comprises a window (12), and each of these windows is facing a solid region (14) of the plate opposite, so that these windows are blind.
[Revendication 4] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel l’une au moins des zones de jonction (10 ; 11 ) respectives des première et deuxième plaques comporte une surface texturée (17), notamment au moins le long de la fenêtre (12) ou des fenêtres, configurée pour renforcer la jonction entre les première et deuxième plaques. [Claim 4] Heat exchanger according to one of the preceding claims, in which at least one of the respective junction zones (10; 11) of the first and second plates comprises a textured surface (17), in particular at least along of the window (12) or windows, configured to reinforce the junction between the first and second plates.
[Revendication 5] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel les zones de jonction (10 ; 11 ) des première et deuxième plaques sont jointes par une colle et/ou par une matière ayant fondu de l’une des plaques. [Claim 5] Heat exchanger according to one of the preceding claims, in which the junction zones (10; 11) of the first and second plates are joined by an adhesive and/or by a material having melted from one of the plates .
[Revendication 6] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel la fenêtre (12) est une ouverture à contour fermé.[Claim 6] Heat exchanger according to one of the preceding claims, in which the window (12) is an opening with a closed contour.
[Revendication 7] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel sur l’une des plaques, la fenêtre (12), lorsqu’une seule fenêtre est présente, ou les fenêtres, lorsque plusieurs fenêtres sont présentes, occupent, en totalité, au moins 5% de la superficie totale de la plaque correspondante. [Claim 7] Heat exchanger according to one of the preceding claims, in which on one of the plates, the window (12), when a single window is present, or the windows, when several windows are present, occupy, in full, at least 5% of the total surface area of the corresponding plate.
[Revendication 8] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel la première plaque (2) est réalisée en métal, notamment en aluminium. [Claim 8] Heat exchanger according to one of the preceding claims, in which the first plate (2) is made of metal, in particular aluminum.
[Revendication 9] Echangeur de chaleur selon l’une des revendications précédentes, dans lequel la deuxième plaque (4) est réalisée à base d’une matière thermoplastique. [Claim 9] Heat exchanger according to one of the preceding claims, in which the second plate (4) is made from a thermoplastic material.
[Revendication 10] Procédé de fabrication d’un échangeur de chaleur (1 ), notamment pour un véhicule, comportant les étapes suivantes : [Claim 10] Process for manufacturing a heat exchanger (1), particularly for a vehicle, comprising the following steps:
- fournir une première plaque (2) présentant un pourtour externe, - provide a first plate (2) having an external periphery,
- fournir une deuxième plaque (4) présentant un pourtour externe, - provide a second plate (4) having an external periphery,
- assembler la première plaque avec la deuxième plaque pour former au moins un canal d’écoulement (5) pour un fluide caloporteur en joignant, notamment par une colle ou par fusion de matière de l’une des première et deuxième plaques, une zone de jonction (10) de la première plaque à une zone de jonction (11 ) de la deuxième plaque, l’une des première et deuxième plaques comportant une fenêtre (12) adjacente à ladite zone de jonction et inscrite à l’intérieur du pourtour externe de la plaque correspondante. - assemble the first plate with the second plate to form at least one flow channel (5) for a heat transfer fluid by joining, in particular by glue or by fusion of material from one of the first and second plates, a zone of junction (10) of the first plate to a junction zone (11) of the second plate, one of the first and second plates comprising a window (12) adjacent to said junction zone and inscribed inside the external periphery of the corresponding plate.
[Revendication 11] Procédé selon la revendication précédente, dans lequel les zones de jonction (10, 11 ) des première et deuxième plaques sont jointes par chauffage et pressage de ces zones de jonction. [Claim 11] Method according to the preceding claim, in which the junction zones (10, 11) of the first and second plates are joined by heating and pressing these junction zones.
[Revendication 12] Procédé selon la revendication 10 ou 11 , dans lequel les zones de jonction (10, 11 ) des première et deuxième plaques sont jointes par une colle, avec éventuellement une étape de réticulation de la colle, j [Claim 12] Method according to claim 10 or 11, in which the junction zones (10, 11) of the first and second plates are joined by an adhesive, possibly with a step of crosslinking the glue, j
PCT/EP2023/078699 2022-10-26 2023-10-16 Heat exchanger, in particular for a vehicle WO2024088811A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2211124A FR3141515A1 (en) 2022-10-26 2022-10-26 Heat exchanger, particularly for a vehicle
FRFR2211124 2022-10-26

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WO2024088811A1 true WO2024088811A1 (en) 2024-05-02

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859209A1 (en) * 1996-08-29 1998-08-19 Zexel Corporation Heat exchanger
JP3697006B2 (en) * 1996-02-05 2005-09-21 サンデン株式会社 Heat exchanger and method for manufacturing the same
WO2014096103A1 (en) * 2012-12-18 2014-06-26 Valeo Systemes Thermiques Flat tube for a charge air heat exchanger and corresponding charge air heat exchanger
FR3081981A1 (en) 2018-05-31 2019-12-06 Valeo Systemes Thermiques HEAT EXCHANGER, METHOD FOR MANUFACTURING SUCH AN EXCHANGER, AND ASSEMBLY COMPRISING SUCH AN EXCHANGER AND A BATTERY
US20220196336A1 (en) * 2020-10-27 2022-06-23 Panasonic Intellectual Property Management Co., Ltd. Heat exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3697006B2 (en) * 1996-02-05 2005-09-21 サンデン株式会社 Heat exchanger and method for manufacturing the same
EP0859209A1 (en) * 1996-08-29 1998-08-19 Zexel Corporation Heat exchanger
WO2014096103A1 (en) * 2012-12-18 2014-06-26 Valeo Systemes Thermiques Flat tube for a charge air heat exchanger and corresponding charge air heat exchanger
FR3081981A1 (en) 2018-05-31 2019-12-06 Valeo Systemes Thermiques HEAT EXCHANGER, METHOD FOR MANUFACTURING SUCH AN EXCHANGER, AND ASSEMBLY COMPRISING SUCH AN EXCHANGER AND A BATTERY
US20220196336A1 (en) * 2020-10-27 2022-06-23 Panasonic Intellectual Property Management Co., Ltd. Heat exchanger

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