EP3447432B1 - Wärmetauscherplatte mit mikrokanälen, die ein montagelement für den rand der platte umfasst - Google Patents

Wärmetauscherplatte mit mikrokanälen, die ein montagelement für den rand der platte umfasst Download PDF

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Publication number
EP3447432B1
EP3447432B1 EP18189631.7A EP18189631A EP3447432B1 EP 3447432 B1 EP3447432 B1 EP 3447432B1 EP 18189631 A EP18189631 A EP 18189631A EP 3447432 B1 EP3447432 B1 EP 3447432B1
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EP
European Patent Office
Prior art keywords
heat
strip
exchange plate
strips
assembly
Prior art date
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EP18189631.7A
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English (en)
French (fr)
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EP3447432A1 (de
Inventor
Jean-Antoine Gruss
Franck Pra
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Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0471—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
    • 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
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • 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
    • F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
    • F28F2255/146—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded overmolded
    • 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
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
    • 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
    • F28F2275/06—Fastening; Joining by welding

Definitions

  • the present invention relates to the general field of heat exchangers or heat exchangers, in particular heat exchangers with polymer plates.
  • the invention finds applications in various fields of industry, and in particular for technologies developing a large heat exchange surface per unit of volume while maintaining reasonable hydraulic pressure drops.
  • the invention can be applied to produce a gas / liquid exchanger of radiator type, a liquid / liquid exchanger, in particular with corrosive fluids, an evaporator or a condenser, an exchanger arranged on the wall of a building, an exchanger radiator type in natural convection, an on-board liquid / gas exchanger for aeronautics and aerospace, among others.
  • the invention provides a microchannel heat exchange plate comprising at the edge an element for assembly to another plate, a heat exchange device comprising at least one such plate, as well as an associated manufacturing process of such a heat exchange plate.
  • a heat exchange plate according to the preamble of claim 1 is known from FR 3030029 .
  • Microchannel heat exchangers or heat exchangers comprise a casing provided with a plurality of microchannels in which a fluid circulates.
  • the fluid can be in phase-changing liquid and gaseous form, or the fluid is in liquid or gaseous form.
  • the outer surface of the enclosure exchanges heat with the external environment by convection. For example, air circulation allows heat to be evacuated or supplied.
  • the outer surface of the casing can be provided with fins to increase the exchange surface with the external environment.
  • This type of heat exchanger is for example used in evaporators or condensers of thermal machines for mechanical compression of refrigerant.
  • the US patent application US 2011/0139420 A1 describes an example of a microchannel heat exchanger intended to be used in an air conditioning device.
  • the heat exchanger comprises flat tubes arranged parallel to each other, each tube comprising a plurality of microchannels.
  • the microchannels are connected in parallel to a common power supply and to a common drain.
  • the tubes are for example made of aluminum by extrusion.
  • the tubes are twisted. Air circulates between the tubes. Fins are provided between the tubes to promote heat exchange with the air circulating between the tubes. Air circulates between the tubes and the fins.
  • the presence of the fins causes clogging of the passages between the tubes and the fins, and the appearance of a pressure drop within the device and therefore a drop in the efficiency of the heat exchange device.
  • this device has many parts to manage and assemble.
  • the thermal connections between the tubes and the fins are difficult to achieve in order to obtain a good thermal connection between the tubes and the fins. The cost of manufacturing this device is therefore high.
  • Each plate comprises strips between two edges of the plate in a first direction and arranged side by side in a second direction.
  • Each strip comprises at least one channel for the circulation of a fluid extending from one edge to the other of the plate, and has a corrugation comprising peaks and valleys, making it possible to delimit the circulation paths of another. fluid.
  • This embodiment may however prove to be complex to achieve and may not be optimal in terms of thermohydraulic performance.
  • the aim of the invention is to at least partially remedy the needs mentioned above and the drawbacks relating to the embodiments of the prior art.
  • the subject of the invention is thus a heat exchange plate for a heat exchange device between a first fluid and a second fluid according to claim 1.
  • the heat exchange plate does not require the use of fins, the manufacture can therefore be significantly simplified.
  • the fouling problems are reduced, which makes it possible to maintain a certain level of efficiency.
  • the corrugations of the bands create a tortuosity favorable to thermal exchanges between the first fluid circulating in the microchannels and the plate.
  • they generate a large heat exchange surface between the plate and the second fluid.
  • the heat exchange plate comprises microchannels for a first fluid, the plate being shaped so as to define virtual channels for the circulation of a second fluid in a direction normal to that of the channels.
  • the presence of circulation or flow paths extending in the second direction normal to the first direction in which the microchannels extend ensures a significant flow of air with a low pressure drop while ensuring the existence of obstacles between the virtual channels, these obstacles making it possible to break the boundary layers on the structure, causing the appearance of turbulence beneficial to the development of heat exchange coefficient by convection on the surface of the plate.
  • the thermal plate according to the invention can also include one or more of the following characteristics taken in isolation or according to any possible technical combination.
  • each strip has a honeycomb structure, having two substantially parallel walls forming the upper and lower faces of the strip, extending in the first direction, and a plurality of internal partitions, substantially parallel to each other and perpendicular to each other. two walls, connecting the walls together, so as to define a plurality of microchannels, each channel forming a cell corresponding to the space between two successive partitions and the two walls.
  • Each hollow end box may have open side faces, extending perpendicular to the plane, and closed upper and lower faces, extending along the plane, to allow flow of the first fluid in the second direction.
  • each hollow end box may have closed side faces, extending perpendicular to the plane, and open top and bottom faces, extending along the plane, to allow flow of the first fluid in a third vertical direction. , the first, second and third directions forming a direct trihedron.
  • each strip is preferably made of a polymer material and manufactured by extrusion and shaping.
  • the production of a strip by extrusion is advantageously done by means of an extruder whose die is equipped with a calibration die, this calibration die making it possible in particular to give the extruded material a honeycomb structure.
  • All of the bands may have the same corrugation, the corrugations of two adjacent bands being out of phase, the phase shift being such that a trough of one band is aligned with a top of the adjacent band in the second direction.
  • the general profile of the ripple of the bands can be a sinusoidal curve.
  • the general profile of the corrugation of the bands may be in an arc of a circle, comprising a juxtaposition of elementary "S" -shaped curves, each formed by the union of two semi-circles inverted with respect to one another. to the other.
  • the bands can have a thickness between 0.5 and 3 mm.
  • a wall, formed by the upper face, the lower face or a partition of a strip, may have a thickness of between 0.2 and 1 mm, preferably equal to approximately 0.3 mm.
  • the height of the channel (s) may be between 0.5 and 3 mm, being preferably equal to approximately 1 mm.
  • the width of the channel or channels may be between 0.5 and 3 mm, being preferably equal to approximately 1 mm.
  • Each band can include between 4 and 50 channels, and preferably about 10 channels.
  • the pitch of the corrugation of the strips may be between 10 and 30 mm, being preferably equal to approximately 20 mm.
  • each strip may have between 4 to 50 corrugations, and in particular approximately 6 corrugations.
  • the ripple angle defined as the angle formed by the tangent to the curvature of a vertex of the strip with respect to the extension plane of the strip, can be between 10 and 80 °, being for example equal at about 30 °.
  • the tops of the bands are located on one side of the plane of the heat exchange plate and the hollows are located on the other side of the plane of the heat exchange plate.
  • a further subject of the invention is a heat exchange device or heat exchanger, characterized in that it comprises at least one heat exchange plate as defined above.
  • the heat exchange device according to the invention comprising at least one heat exchange plate has a very high heat exchange compactness in terms of square meter of primary exchange surface reduced to the volume of the structure.
  • the heat exchange device comprises several plates stacked on top of each other in the third vertical direction defined above. New virtual channels are then defined between the bands of the intersecting plates.
  • the section of the circulation or flow paths can be varied easily, modifying the pressure drops across the stack and the size of the stack.
  • the heat exchange plates of the heat exchange device can be identical. They can be oriented with respect to each other so that each top of a heat exchange plate bears against a hollow of another heat exchange plate.
  • the heat exchange plates can, where appropriate, be joined together by points of welding or glue at a hollow and a top, two tops or two hollows.
  • said one assembly element can form a hollow end box inside which open the channel or channels intended for the circulation of the first fluid, formed by overmolding at the ends of each strip.
  • the heat exchange plate, the heat exchange device and the manufacturing method according to the invention can include any one of the characteristics stated in the description, taken in isolation or in any technically possible combination with other characteristics.
  • each strip is obtained from a polymer material and manufactured by extrusion and hot forming to form the corrugation.
  • each heat exchange plate 2 allows heat exchange between a first fluid and a second fluid, for example air.
  • the heat exchange plate 2 extends in a plane P and comprises at least two bands B1 and B2 extending between a first edge 4 and a second edge 6 of the heat exchange plate 2, opposite to the first edge 4 , in a first direction X.
  • the bands B1, B2 are arranged one next to the other in a second direction Y, perpendicular to the first direction X, each of the bands B1, B2 comprising channels 5 extending from the first edge 4 to the second edge 6 and opening into the first edge 4 and the second edge 6, for the circulation of the first fluid.
  • the bands B1, B2 each have a corrugation comprising peaks 9 and troughs 7, two directly adjacent bands B1, B2 being arranged relatively to each other such that a peak 9 of a band B1 and a top 9 of the directly neighboring band B2 are offset in the first direction X and such that, in the second direction Y, the top 9 of a band B1 and the hollow 7 of the directly neighboring band B2 delimit circulation paths C1, C2 of the second fluid, as visible on the figures 4 and 8 .
  • each heat exchange plate 2 comprises at least one assembly element 12 on each of its first 4 and second 6 edges, secured to the bands B1, B2 allowing the assembly of the heat exchange plate 2 with one or more other heat exchange plates 2 within the heat exchange device 10.
  • bands B are made individually from a polymer material by extrusion.
  • the strip B has two substantially parallel walls forming the upper faces Bs and lower Bi of the strip B, extending in the first direction X, and a plurality of internal partitions 23, substantially parallel to each other and perpendicular to each other.
  • each strip B thus has several parallel microchannels 5 distributed along the second direction Y, perpendicular to the first direction X.
  • each microchannel 5 can have a hydraulic diameter of between 0.5 mm and 10 mm.
  • each band B can comprise from 4 to 50 microchannels, and preferably of the order of 10 microchannels.
  • Each strip B can have a wall thickness of between 0.2 and 1 mm, for example equal to approximately 0.3 mm.
  • each strip B is shaped (embossing) by hot deformation in order to produce a corrugation between the longitudinal ends of each strip B.
  • this corrugation is periodic.
  • the corrugation is advantageously the same for all the bands B.
  • the corrugations of two adjacent bands are out of phase at the level of the heat exchange plate 2, so that a hollow 7 of a band is aligned with a vertex 9 of the adjacent strip in the second direction Y.
  • circulation paths C1, C2 of maximum section are delimited.
  • the ripple can correspond to a sinusoidal curve.
  • the corrugation is in the form of an arc of a circle, comprising a juxtaposition of elementary “S” -shaped curves, each formed by the union of two semi-circles inverted with respect to one another.
  • the pitch p o of the corrugation corresponding to the distance between two successive peaks 9, may for example be between 10 and 30 mm, preferably being of the order of 20 mm.
  • each band B can comprise between 4 and 50, preferably 6, corrugations.
  • the angle of the corrugation a which represents the inclination of a corrugation relative to the horizontal formed by the first direction X, is for example between 10 and 80 °, being preferably of the order of 30 °.
  • each strip B can be achieved by an operation at the die outlet, while the profile is still plastic on an extruded strip of suitable width.
  • this corrugation operation can be carried out on a strip cut from an extruded plate of great width.
  • This strip is then heated by hot air, infrared, etc., or any other means known to those skilled in the art, to reach a plastic state, then be deformed by calendering on a forming tool.
  • each strip B obtained comprises a first flat portion 13 forming at least in part the first edge 4 of the heat exchange plate 2 to be formed and a second flat portion 14 forming at least in part the second edge 6 of the plate. heat exchange 2 to be formed.
  • assembly elements 11 form intermediate assembly elements 11 which, as can be seen on the figure 4 showing the heat exchange device 10 obtained according to an exemplary implementation not forming part of the invention, are positioned between two vertically adjacent heat exchange plates 2, extending over the entire edge of the plates.
  • Each intermediate assembly element 11 comprises an upper face 11s extending along the plane P as defined below in connection with the figure 8 , intended to be secured by welding to a first heat exchange plate 2, and a lower face 11i extending along the plane P, intended to be secured by welding to a second heat exchange plate 2, the first and second plates being in contact with each other.
  • several bands B can be welded together along weld lines Ls to increase the number of microchannels 5 in the second direction Y, while preferably the intermediate elements 11 are in a single part along the second direction Y, the same intermediate element 11 thus being placed on at least two bands B welded together.
  • the welding ensures the seal between the corrugated bands B and the intermediate elements 11. It is carried out while the intermediate elements 11 and the bands B are located in a positioning tool.
  • the welding may in particular consist of the fusion of the adjacent walls, whether they are the outer walls of the strips or the ribs 15 of the intermediate elements 11. This welding is carried out by hot air, by radiant panels in the infrared, by laser or by any other means. another technique known to those skilled in the art for carrying out this type of weld.
  • the assembly can be welded in a single operation, or by causing a weld source to move at a predetermined speed in front of the parts to be welded. It is also possible to have a fixed welding device and to move the assembly comprising the parts to be welded.
  • each intermediate element 11 comprises, on its two lateral faces 11l, two ribs 15 extending perpendicularly to the corresponding lateral face 11l and over the entire length of the lateral face 11l in the second direction Y. Also, each intermediate element 11 comprises four ribs 15 formed at the intersections between the side faces 11l and the upper 11s and lower 11i faces in the extension in the second direction Y of the upper 11s and lower 11i faces.
  • intermediate elements 11 can advantageously be made of a polymer material.
  • the ribs 15, or also designated as “teeth”, can be formed on one side or on both sides, as here, of the intermediate element 11. They can be produced either directly by extrusion, or alternatively by machining. .
  • these ribs 15 make it possible to facilitate the welding of the intermediate elements 11 with the bands B.
  • the height h z of a rib 15, ie its dimension in the third direction Z may be of the order of 0.30 mm.
  • the width l x of a rib 15, ie its dimension in the first direction X may be of the order of 0.5 mm.
  • the height h i of the intermediate element 11 between two ribs 15 located on the same lateral face 11l respectively in the extension of the upper face 11s and of the lower face 11i, corresponding to the dimension in the third direction Z between these two ribs 15 may be of the order of 3.20 mm.
  • the width l ⁇ of an intermediate element 11 comprising two ribs 15 opposite on the side faces 11l, corresponding to the dimension in the first direction X of the intermediate element 11 comprising two ribs 15, may be of the order of 11 mm.
  • a plurality of bands B is produced by extrusion of a polymer material, and these bands B are then corrugated by hot deformation.
  • each strip B comprises, at each of its ends situated respectively at the level of the first edge 4 and of the second edge 6 of the heat exchange plate 2, an assembly element 12 in the form of a hollow end box 12, formed by overmolding and into which open the channels 5 intended for the circulation of the first fluid.
  • the end boxes 12 allow the assembly of the heat exchange plates 2 for the heat exchange device 10 in the manner of a Lego® game, by fitting the end boxes 12 on top of each other, in a sealed manner.
  • each hollow end box 12 may comprise open side faces 18, extending perpendicular to the plane P, and upper and lower faces 19 closed, extending along the plane P, to allow a flow of the first fluid along the line. second direction Y.
  • each hollow end box 12 may include closed side faces 18, extending perpendicular to the plane P, and upper and lower faces 19 open, extending along the plane P, to allow a flow of the first fluid along a third vertical direction Z, the first X, second Y and third Z directions forming a direct trihedron.
  • the liquid inlet / outlet boxes of the complete heat exchanger can be positioned and secured together in a sealed manner.
  • the first liquid circulates in the flow axis of the second liquid.
  • the first liquid flows perpendicular to the flow axis of the second liquid.
  • each hollow end box 12 comprises, on a first face, a male assembly rib 20 and, on a second face opposite to the first face, a female assembly groove 21, the assembly a male assembly rib 20 of a first hollow end box 12 with a female assembly groove 21 of a second hollow end box 12 allowing the assembly of the first and second end boxes 12 , and thus the assembly of a plurality of bands B together to form heat exchange plates 2.
  • the figure 8 shows the heat exchange device 10 obtained with hollow end boxes 12 according to the principle of figure 6 , or with boxes or manifolds 12 overmolded in the flow axis of the second liquid. Of the same In this way, the assembly could be assembled in a configuration with manifolds 12 perpendicular to the flow axis of the second liquid.
  • the sealed assembly can be achieved by gluing using an adhesive suitable for the polymer used for the end boxes 12.
  • the fluid circulating in the plates 2 is for example a liquid, a gas or a liquid / gas mixture.
  • the fluid circulating in the second direction Y is for example a gas or a mixture of gases, such as air or a liquid.
  • a first fluid is circulated in the microchannels 5 via supply and discharge manifolds, the supply manifold being connected to a source of first fluid and the discharge manifold being connected, for example, to a storage area. of this first fluid.
  • a pump is for example used to ensure the circulation of the first fluid.
  • the discharge manifold can be connected to the supply manifold to circulate the first fluid in a closed circuit in the plates 2.
  • the second fluid for example air
  • the first fluid exchanges by convection with the material of the bands B and the bands B exchange by convection with the air.
  • the device 10 allows very efficient heat exchanges in a small footprint.
  • the bands B produced by extrusion, can be made of any polymeric materials suitable for extrusion, such as PVDF (Polyvinylidene fluoride), PPO (Polyphenilene oxide), PP (Polypropylene), CPVC (Superchlorinated polyvinyl chloride), PA (Polyamide), PPS (Polyphenylene sulfide), PEI (Polyetherimide), PSU (Polysulfone), PBI (Polybenzidimazole), PFA 15 (Perfluoroalkoxy), PEEK (Polyetheretherketone), PMMA (Methyl Polymethacrylate). Fillers such as for example carbon, boron nitride, glass or carbon fibers, carbon nanotubes can be incorporated into the polymer to improve its thermal conductivity and / or mechanical strength properties.
  • PVDF Polyvinylidene fluoride
  • PPO Polyphenilene oxide
  • PP Polypropylene
  • CPVC Superchlorinated polyvinyl
  • the assembly elements 11, 12 can preferably be made with the same materials as the extruded heat exchange plates 2.
  • the heat exchange plates 2 have a shape such that the free passage sections for the second fluid, typically air, are identical or close, so as to avoid the preferential passages of air.
  • the heat exchange plate and the heat exchange device according to the invention are relatively simple to produce, using few parts. This results in a reduced manufacturing cost compared to the plates and devices of the prior art. They are robust and offer good reliability, due to the limited number of assembled parts. In addition, they have good modularity insofar as the size of the heat exchange device is easily adjustable.

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

Claims (10)

  1. Wärmetauscher-Platte (2) für eine Wärmetauscher-Vorrichtung (10) zwischen einem ersten Fluid und einem zweiten Fluid, wobei sich die Wärmetauscher-Platte (2) in einer Ebene (P) erstreckt, wobei die Wärmetauscher-Platte (2) wenigstens zwei Bänder (B, B1, B2) umfasst, welche sich zwischen einem ersten Rand (4) der Wärmetauscher-Platte (2) und einem zweiten Rand (6) der Wärmetauscher-Platte (2) gegenüber dem ersten Rand (4) gemäß einer ersten Richtung (X) erstrecken, wobei die Bänder (B, B1, B2) nebeneinander gemäß einer zweiten Richtung (Y) angeordnet sind, welche senkrecht zu der ersten Richtung (X) ist, wobei jedes der Bänder (B, B1, B2) wenigstens einen Kanal (5) umfasst, insbesondere eine Mehrzahl von Kanälen (5), welche sich von dem ersten Rand (4) zu dem zweiten Rand (6) erstrecken und in dem ersten Rand (4) und dem zweiten Rand (6) münden, wobei der wenigstens eine Kanal (5) für die Zirkulation eines ersten Fluids vorgesehen ist, wobei die Bänder (B, B1, B2) jeweils eine Wellung aufweisen, welche Gipfel (9) und Täler (7) umfasst, wobei zwei direkt benachbarte Bänder (B, B1, B2) relativ zueinander derart angeordnet sind, dass ein Gipfel (9) eines Bands (B1) und ein Gipfel (9) des direkt benachbarten Bands (B2) der ersten Richtung (X) folgend versetzt sind, und derart, dass der zweiten Richtung (Y) folgend der Gipfel (9) eines Bands (B1) und das Tal (7) des direkt benachbarten Bands (B2) Zirkulationswege (C1, C2) eines zweiten Fluids begrenzen,
    wobei die Wärmetauscher-Platte (2) wenigstens ein Montageelement (11, 12) an jedem seiner ersten (4) und zweiten (6) Ränder umfasst, welche mit den wenigstens zwei Bändern (B, B1, B2) verbunden sind, was die Montage der Wärmetauscher-Platte (2) mit einer oder mehreren weiteren Wärmetauscher-Platten (2) innerhalb der Wärmetauscher-Vorrichtung (10) erlaubt,
    dadurch gekennzeichnet, dass jedes Band (B, B1, B2) an jedem seiner Enden, welche jeweils auf dem Niveau des ersten Rands (4) und des zweiten Rands (6) der Wärmetauscher-Platte (2) platziert sind, ein Montageelement (12) in der Form eines Gehäuses mit offenem Ende (12) umfasst, in dessen Inneren der oder die Kanäle (5) münden, welche für die Zirkulation des ersten Fluids vorgesehen sind,
    und dadurch dass jedes Gehäuse mit offenem Ende (12) an einer ersten Fläche eine männliche Montagerippe (20) und an einer zweiten Fläche gegenüber der ersten Fläche eine weibliche Montagenut (21) umfasst, wobei die Montage der männlichen Montagerippe (20) eines ersten Gehäuses mit offenem Ende (12) mit einer weiblichen Montagenut (21) eines zweiten Gehäuses mit offenem Ende (12) die Montage der ersten und zweiten Gehäuse mit offenem Ende (12) erlaubt, und somit die Montage einer Mehrzahl von Bändern (B, B1, B2) untereinander, um eine oder mehrere Wärmetauscher-Platten (2) zu bilden.
  2. Wärmetauscher-Platte nach Anspruch 1, dadurch gekennzeichnet, dass jedes Band (B, B1, B2) eine Wabenstruktur aufweist, welche zwei im Wesentlichen parallele Wände aufweist, welche obere (Bs) und untere (Bi) Flächen des Bands (B, B1, B2) bilden, welche sich gemäß der ersten Richtung (X) erstrecken, sowie eine Mehrzahl von inneren Trennwänden (23), welche im Wesentlichen parallel untereinander und senkrecht zu den beiden Wänden (Bs, Bi) sind, welche die Wände miteinander derart verbinden, dass eine Mehrzahl von Mikrokanälen (5) definiert sind, wobei jeder Kanal (5) eine Wabe bildet, welche dem Raum zwischen zwei aufeinander folgenden Trennwänden (23) und den beiden Wänden (Bs, Bi) entspricht.
  3. Wärmetauscher-Platte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jedes Gehäuse mit offenem Ende (12) offene laterale Flächen (18), welche sich senkrecht zu der Ebene (P) erstrecken, und geschlossene obere und untere Flächen (19) umfasst, welche sich gemäß der Ebene (P) erstrecken, um ein Strömen des ersten Fluids gemäß der zweiten Richtung (Y) zu erlauben.
  4. Wärmetauscher-Platte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jedes Gehäuse mit offenem Ende (12) geschlossene laterale Flächen (18) umfasst, welche sich senkrecht zu der Ebene (P) erstrecken, sowie offene obere und untere Flächen (19), welche sich gemäß der Ebene (P) erstrecken, um ein Strömen des ersten Fluids gemäß einer vertikalen dritten Richtung (Z) zu erlauben, wobei die ersten (X), zweiten (Y) und dritten (Z) Richtungen ein direktes Dreibein bilden.
  5. Wärmetauscher-Platte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jedes Band (B, B1, B2) aus einem Polymermaterial aufgebaut und durch Extrusion und Formgebung hergestellt ist.
  6. Wärmetauscher-Platte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass alle der Bänder (B, B1, B2) die gleiche Wellung aufweisen, wobei die Wellung von zwei benachbarten Bändern (B1, B2) phasenverschoben ist, wobei die Phasenverschiebung derart ist, dass ein Tal (7) eines Bands (B1) mit einem Gipfel (9) des benachbarten Bands (B2) in der zweiten Richtung (Y) ausgerichtet ist, wobei das allgemeine Wellungsprofil der Bänder (B, B1, B2) eine sinusförmige Kurve ist.
  7. Wärmetauscher-Platte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass alle der Bänder (B, B1, B2) die gleiche Wellung aufweisen, wobei die Wellungen von zwei benachbarten Bändern (B1, B2) phasenverschoben sind, wobei die Phasenverschiebung derart ist, dass ein Tal (7) eines Bands (B1) mit einem Gipfel (9) des benachbarten Bands (B2) in der zweiten Richtung (Y) ausgerichtet ist, wobei das allgemeine Wellungsprofil der Bänder (B, B1, B2) kreisbogenförmig ist, umfassend eine Aneinanderreihung von Elementarkurven in "S"-Form, wobei jede durch eine Vereinigung von zwei zueinander inversen Halbkreisen gebildet ist.
  8. Wärmetauscher-Vorrichtung (10), dadurch gekennzeichnet, dass sie wenigstens eine Wärmetauscher-Platte (2) nach einem der vorhergehenden Ansprüche umfasst.
  9. Verfahren zum Herstellen einer Wärmetauscher-Platte (2) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    a) Herstellen von Bändern (B, B1, B2) durch Extrusion, welche mit wenigstens einem Kanal (5) versehen sind,
    b) Formbilden von jedem Band (B, B1, B2) durch Warm-Verformung derart, dass eine Wellung des Bands gebildet wird, welche es erlaubt, ein geprägtes Band zu erhalten,
    c) Befestigen von wenigstens einem Montageelement (11, 12) an jedem Ende von jedem Band (B, B1, B2), um die Montage von Wärmetauscher-Platten (2) aneinander zu erlauben.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass das Montageelement (12) ein Gehäuse mit offenem Ende (12) bildet, in dessen Innerem der oder die Kanäle (5) münden, welche für die Zirkulation des ersten Fluids vorgesehen sind, welches durch Überformen auf dem Niveau der Enden von jedem Band (B, B1, B2) gebildet wird.
EP18189631.7A 2017-08-23 2018-08-17 Wärmetauscherplatte mit mikrokanälen, die ein montagelement für den rand der platte umfasst Active EP3447432B1 (de)

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FR1757835A FR3070480B1 (fr) 2017-08-23 2017-08-23 Plaque d'echange thermique a microcanaux comportant un element d'assemblage en bordure de plaque

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EP4438988A1 (de) * 2023-03-28 2024-10-02 Valeo Systemes Thermiques Die vorliegende erfindung betrifft einen wärmetauscher, insbesondere einen batteriekühler zum kühlen von batterien in einem elektrofahrzeug

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CN115265242A (zh) * 2022-09-26 2022-11-01 杭州沈氏节能科技股份有限公司 一种换热器及制造方法

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US5582241A (en) * 1994-02-14 1996-12-10 Yoho; Robert W. Heat exchanging fins with fluid circulation lines therewithin
DE102006015568B3 (de) * 2006-04-04 2007-05-31 Daimlerchrysler Ag Verfahren zur Herstellung eines Wärmetauscher-Moduls für Wärmetauscher für elektrochemische Energiespeicher, sowie Vorrichtung zur Durchführung des Verfahrens
FR2923589B1 (fr) * 2007-11-08 2015-12-11 Valeo Systemes Thermiques Branche Thermique Moteur Echangeur de chaleur brase de type fluide/fluide
DE202010014956U1 (de) * 2010-10-30 2011-02-24 Erbslöh Aluminium Gmbh Wärmetauscher, insbesondere zur Anwendung bei Kühlmöbeln
FR3030029B1 (fr) * 2014-12-16 2017-01-20 Commissariat Energie Atomique Plaque d'echange thermique a microcanaux et echangeur thermique comportant au moins une telle plaque

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EP4438988A1 (de) * 2023-03-28 2024-10-02 Valeo Systemes Thermiques Die vorliegende erfindung betrifft einen wärmetauscher, insbesondere einen batteriekühler zum kühlen von batterien in einem elektrofahrzeug

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