WO2008125755A2 - Method of making a heat exchanger and heat exchanger obtained according to this method - Google Patents

Method of making a heat exchanger and heat exchanger obtained according to this method Download PDF

Info

Publication number
WO2008125755A2
WO2008125755A2 PCT/FR2008/000237 FR2008000237W WO2008125755A2 WO 2008125755 A2 WO2008125755 A2 WO 2008125755A2 FR 2008000237 W FR2008000237 W FR 2008000237W WO 2008125755 A2 WO2008125755 A2 WO 2008125755A2
Authority
WO
WIPO (PCT)
Prior art keywords
plates
orifices
plate
tracks
face
Prior art date
Application number
PCT/FR2008/000237
Other languages
French (fr)
Other versions
WO2008125755A8 (en
WO2008125755A3 (en
Inventor
Pierre Vironneau
Bernard Seosse
Pierre Aphecetche
Frédéric Caramanos
Original Assignee
Cazères, Pascal
Avril, Alain
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 Cazères, Pascal, Avril, Alain filed Critical Cazères, Pascal
Priority to EP08775591A priority Critical patent/EP2122288A2/en
Priority to JP2009550306A priority patent/JP2010519494A/en
Priority to CN2008800049631A priority patent/CN101611286B/en
Priority to US12/528,236 priority patent/US20100319891A1/en
Priority to CA002678138A priority patent/CA2678138A1/en
Publication of WO2008125755A2 publication Critical patent/WO2008125755A2/en
Publication of WO2008125755A3 publication Critical patent/WO2008125755A3/en
Publication of WO2008125755A8 publication Critical patent/WO2008125755A8/en
Priority to HK10103582.6A priority patent/HK1135172A1/en

Links

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
    • F28D9/0062—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 spaced plates with inserted elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with 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
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/104—Particular pattern of flow of the heat exchange media with parallel flow
    • 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
    • F28F2255/10—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes made by hydroforming
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49366—Sheet joined to sheet

Definitions

  • the present invention relates to the processes for producing a heat exchanger, as well as the heat exchangers produced by these processes, by emphasizing that these heat exchangers find a particularly advantageous application in the context of heat exchange using gaseous fluids, such as air or the like.
  • heat exchangers which comprise a plurality of plies in contact with each other each defining a fluid flow, each ply comprising at least two solid plates made of a tight material and kept at a distance from each other by means of spacers of different types.
  • document US Pat. No. 5,287,918 relates to a compact "fin-plate” heat exchanger and to a process for manufacturing such an exchanger.
  • the exchanger comprises, for example, three flat metal sheets, for example made of titanium, stacked one on the other, partially bonded to each other by means of glue so as to allow the spacing of the two outer sheets. introducing between the sheets a gas under pressure.
  • the intermediate sheet is made of a superplastic material, which meets a precise technical definition, which can be summarized by a material that has a high plastic deformation phase at high temperature thus allowing significant elongations break. Once the outer sheets apart, the intermediate sheet has deformed so as to define two fluid flow conduits on either side of it, and between the two outer sheets of stacking, respectively.
  • the invention according to this document consists in replacing the pleated smooth plates by pierced pleated plates in order to increase the turbulence of the air during its crossing of the exchanger, and thus to improve the performance of the latter.
  • the folds may advantageously be arranged obliquely with respect to the direction of the flow of air.
  • the leaves of the exchanger may be aluminum or paper.
  • the pierced intermediate sheets may be made of a porous resin film.
  • the object of the present invention is to implement a method for producing a heat exchanger which at least largely overcomes the aforementioned drawbacks of heat exchangers of the prior art. More particularly, the present invention aims to implement a method for producing a heat exchanger of a lower mass than the exchangers of the prior art, having a reduced pressure drop in the fluidic circulation and a low cost of manufacturing, while improving the heat exchange between the layers, by overcoming the dimensional limits specific to the techniques of the prior art and by increasing the resistance to pressure differences between the layers of fluid flow.
  • the subject of the present invention is a method for producing a heat exchanger comprising a plurality of plies in contact with each other each defining a fluid flow, each ply comprising two upper and lower solid plates respectively made of a waterproof material and spacer means for holding the two solid plates at a distance from each other, characterized in that the production of at least one of said plies comprises the following steps:
  • the present invention also relates to a heat exchanger obtained with the method defined above.
  • Other characteristics and advantages of the invention will appear in the course of the following description given with reference to the accompanying drawings for illustrative but not limiting purposes, in which:
  • FIGS. 1 and 2 show two diagrammatic views respectively from the side and from above of one embodiment of the heat exchanger according to the invention.
  • FIGS. 3 to 5 respectively represent three stages of the implementation of the method according to the invention for producing a heat exchanger according to the invention in accordance with FIGS. 1 and 2.
  • the object of the invention comprises "at least one" element having a given function
  • the embodiment described may comprise several of these elements.
  • the embodiment of the object according to the invention as illustrated has several elements of identical function and if, in the description, it is not specified that the object according to this invention must obligatorily comprise a number particular of these elements, the object of the invention may be defined as comprising "at least one" of these elements.
  • an expression defines, by itself, without a specific particular mention concerning it, a set of structural characteristics, these characteristics may be taken, for the definition of the object of the protection requested, when technically possible, either separately, or in full and / or partial combination.
  • a heat exchanger 1 comprises a plurality of plies 2, 3, 4 in contact with each other, each ply defining a fluid flow 5 , 6 and comprising two upper plates 11 respectively said upper and lower 12 made of a sealed material and spacer means 14 for holding the two solid plates at a distance from one another.
  • These spacer means 14 also make it possible to split the flow of the circulating fluid 5, 6 in order to better contribute to the heat exchange via the upper and lower plates 11, 12 between the two fluids flowing in two consecutive layers.
  • the fluid circulations 5, 6 between two juxtaposed plies are advantageously countercurrent in order to participate in improving the heat exchange performance between the two plies.
  • the method according to the invention is essentially characterized in that the production of at least one of the plies 2, 3, 4 comprises the five steps A to E defined below.
  • the first step A consists in producing an intermediate plate 20 comprising a plurality of strips 21, 22, 23, weakness bridges 35, 36, 37 connecting these strips 21, 22. , 23 so that they are parallel to each other, it being specified that these weakness bridges are capable of breaking with traction, and a plurality of orifices 25, 26, 27 made in each strip so that they delimit, along the two longitudinal edges of the strip, two tracks 31, 32 continuous as shown, or discontinuous (not shown) respectively said left and right, " the orifices 25, 26, 27 being separated from each other by partition walls 28, 29 connecting the two tracks, each track having a so-called upper face 33, 33-1 and a so-called lower face 34, 34-1.
  • the spacer plate 20 can adopt a checkerboard shape (not shown) whose squares of one of the colors of the checkerboard would in fact be orifices, and whose squares of the other color of the checkerboard would consist of material , the latter being connected by the angles constituting in this way in particular the weakened bridges described above.
  • each of the strips 21, 22, 23 described above would be constituted on their respective edges by two discontinuous line alignments, defining the two tracks 31, 32 along the two longitudinal edges of the strip, these two tracks 31, 32 are discontinuous. being interconnected by an alignment of discontinuous discontinuous squares defining the partition walls 28, 29 described above and thus connecting the two tracks.
  • the two tracks 31, 32 and the partition walls 28, 29, forming a determined band, as well as two adjacent similar bands on either side of it, would be connected by the angles of the squares. of the checkerboard made of matter, and forming the bridges of weakness.
  • the second step B consists of the interposition of the spacer plate 20 having the characteristics defined above and obtained during the first step A, between the two upper solid sealing plates 11 and lower 12, as illustrated in FIG.
  • a third step C consists of the interposition of binder means 41, 42 between, on the one hand, the upper face 33 of each left track 31 of all the strips 21, 22, 23 and the lower face 1-11 of the plate upper 11, and on the other hand the underside 34-1 of each straight track 32 of all the strips 21, 22, 23 and the upper face 1-12 of the lower plate 12.
  • this third step C can be performed before or after the first step A or after the second step B defined above, although, according to an advantageous characteristic of the method which will be given below, this third step C will be preference executed before the first step A or before the second step B.
  • the binder means 41, 42 are shown pre-positioned on the faces 33 and 34-1 respectively of the tracks 31, 32, but it is obvious that they can also be pre-positioned directly on the faces lower 1-11 and upper 1-12 respectively of the two plates 11, 12 at the places where the upper and lower faces of the tracks will come into contact with the lower and upper faces of the two plates, as explained below in the description of the following steps implementation of the method according to the invention.
  • the fourth step D it consists of the application of a first force indicated in FIG. 4 by the arrows F, to bring the two upper plates 11 and lower 12 into contact with the intermediate plate 20 so that all upper faces 33 of the left tracks 31 adhere fixedly 41 to the lower face 1-11 of the upper plate 11 and all the lower faces 34-1 of the straight tracks 32 adhere firmly 42 to the upper face 1-12 of the lower plate 12 .
  • binder means 41, 42 it may be provided to subject the stack of the three heat-matched plates.
  • the fifth step E of the method is executed when the adhesion between the tracks 31, 32 and the plates 11, 12 is perfectly obtained. It consists, with reference to the schematic figure 5, in the application of a second force (in fact a force of direction opposite to the first force defined above and indicated by the arrows F in FIG. 4) to eliminate the two upper and lower plates 11, 12 of each other so that the bridges of weakness 36, 37, 38 are broken and until, by folding, the separation walls 28, 29 between the orifices 26, 27 form a non-zero angle with the two upper and lower plates 11, 12.
  • a second force in fact a force of direction opposite to the first force defined above and indicated by the arrows F in FIG. 4
  • the method consists of removing the two upper and lower plates. 11, 12 of the other by applying the second force to them, until the partition walls 28, 29 between the orifices 25, 26, 27 form with the two upper and lower plates 11, 12 a angle substantially equal to ninety degrees.
  • the heat exchanger is shown schematically in the side view shown in Figure 5, in which appear the bridges of weakness 35, 36, 37 broken, the spacers 14 separated by the width of the orifices 25, 26, 27 and which are substantially in the form of "Z" having their two horizontal bars perpendicular to their vertical bar, the horizontal bars corresponding to the two tracks 31, 32 and the vertical connecting bars corresponding to the partition walls 28, 29 of the orifices 25, 26, 27.
  • the two fold lines of the Z-strips are obtained on the two intangible lines 101, 102 represented in broken lines which pass through the two edges 51 , 52 of the orifices which delimit the left and right tracks 31, 32. These folds are favored by the very existence of the orifices and by the small width and thickness of the walls of the separator. 28, 29 between these orifices. In fact, these two fold lines automatically do themselves when applying the second force.
  • the orifices 25, 26, 27 of each strip 21, 22, 23 are made so that their edges 51, 52 mentioned above are collinear 101, 102 and parallel to the longitudinal axis of the tracks. , in order to facilitate the Z-fold as defined above.
  • the countercurrent flow of fluids between two juxtaposed plies is advantageously established in the direction of the two immaterial lines 101, 102 corresponding to the two fold lines of the Z-strips, and between the strips 21, 22, 23 straightened.
  • the width of the orifices 25, 26, 27 of each strip 21, 22, 23 makes it possible to control that the circulation of a fluid 5, 6 is channelized between the strips 21, 22, 23 of a sheet, when this width is low, or may be further distributed through the orifices 25, 26, 27 of each strip 21, 22, 23, in a divergent and then convergent manner, between the inlet 5 e n, 6en > and the outlet 5 SO , 6 S0 of the fluid for each considered web.
  • the countercurrent characteristic of the relative circulation of the two fluids 5, 6 of two adjacent plies is obtained, in cooperation with the guide of the flow of fluids between the strips 21, 22, 23, by symmetrical inputs and outputs between the two plies, with respect to a plane perpendicular to the strips 21, 22, 23 and the plane of the ply: for example, in FIG.
  • the inlet 5 e ⁇ of the fluid in a ply 3 is made at the bottom right of the surface of the sheet 3 and the outlet 5 SO at the top left of the surface of the sheet 3; and the inlet 6 in the fluid in an adjacent layer 2 is at the top right of the web 2 and the outlet 6 S0 at the bottom left of the sheet 2 (the positional references are made with respect to the view of the Figure 2).
  • the method according to the invention is particularly interesting for the purpose of achieving the goals defined in the preamble of the present description, namely to obtain a heat exchanger allowing very good heat exchange while having a low manufacturing cost and a low weight because it is possible to use plates 11, 12, 20 with a thickness of substantially between thirty and a thousand microns, in materials such as aluminum, aluminum, copper, alloys based on aluminum or copper, or any other good thermal conductor material.
  • binder means 41, 42 they can be of different types. But they will preferably be chosen from those which act according to at least one of the following functions: gluing, brazing, welding.
  • these binder means 41 will be chosen from those which can be applied by screen printing, or by micro-projection, for example flat, on at least l one of the following: the upper and lower faces of the tracks 33, 34-1, the lower face 1-11 of the upper plate 11, the upper face 1-12 of the lower plate 12, of which it is well known that these Application techniques can be easily automated.
  • the realization of the orifices 25, 26, 27 can be made according to at least one of the following techniques: micro-cutting, punching, laser cutting, projection of a water jet under pressure which can be very easily robotized, chemical or electrochemical machining.
  • This median zone 60 without an orifice can nevertheless be bordered at each of its ends by at least one orifice 25-26 to form the entry and the exit of the ply, FIG. 2. It is also possible that at least one the two lateral strips 21 have no orifice, which thus allows to obtain for example a traffic sheet completely closed on one side and partially on the other, the inlet and outlet being in this embodiment on the same side. Although, in FIG. 3, the orifices all have the same length, it is possible to make orifices 25, 26, 27 having different lengths, and even to start making holes from an edge of the same. intermediate plate 20, as illustrated in this FIG. 3 with the orifice 1-25, for the purpose for example of providing buffer volumes for distributing the fluid before it flows into the part of the sheet comprising the spacers 14 .
  • the method consists in producing the orifices 25-26 having one of the following preferred forms: rectangular, square, triangular, trapezoidal, round, oval.
  • the method according to the invention will consist of advantageously to make the spacer plates 20 and arrange them relative to each other between the lower and upper plates 11, 12 so that when the lower and upper plates 11, 12 limiting at least two consecutive sheets are spaced from each other , the partition walls 28, 29 between the openings 25, 26, 27 of a web are respectively located in the same plane as the partition walls 28, 29 between the orifices 25, 26, 27 of the other web.
  • the heat exchanger 1 thus obtained will be more resistant to pressure, both external and internal, the partition walls 28, 29 all above one another and aligned forming unitary spacer assemblies for all the layers.
  • These unitary spacers avoid for example deformations of the lower and upper plates 11, 12 at the ends of the partition walls 28, 29, which could occur if they were for example offset staggered.
  • FIGS. 1 and 5 This advantageous configuration in several layers is schematically illustrated in FIGS. 1 and 5.
  • the method may comprise a sixth additional step F which consists, after having made several sheets in contact with each other, to enclose this plurality of plies 2, 3, 4 in a housing 70, FIGS. 1 and 2 , having walls 70-1, 70-2, 70-3, 70-4 partially sealing at least one side of the plies, being further defined in the walls of the housing, inputs and outputs 5 ⁇ n , 5 S0 , 6 in , 6 S0 for each sheet 2, 3, 4 of fluid circulation 5, 6.
  • some ends of the plies can be closed by fixed or removable caps to facilitate their cleaning.
  • the present invention also relates to a heat exchanger 1 made according to the method described above.
  • the method according to the invention for producing a heat exchanger is very economical because, besides the fact that it can be implemented with little material, almost all phases of the various stages can easily be automated, for example by means of robot grippers (vacuum suction cups) in particular for handling the plates 11, 12, 20, cutting robots and robots for depositing the binder means 41, 42, operating according to the techniques mentioned throughout this description explaining the various steps of implementation of the method according to the invention.
  • robot grippers vacuum suction cups
  • the qualifiers “upper” and “lower”, “right” and “left” are used only to be able to easily differentiate, only with respect to the plane of the figures , the positions of the two full plates 11, 12 relative to each other, the respective positions of the tracks 31, 32 of the same band, and the respective faces of the tracks.
  • the qualifiers “upper” and “lower” should be understood as defining only a position of horizontal plates 11, 12 at respective levels in a vertical direction. These plates 11, 12 may be positioned in any direction relative to the ground.

Landscapes

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

Abstract

The present invention relates to methods for producing a heat exchanger comprising banks 2, 3, 4 each defining a fluid flow, each bank comprising two solid plates 11, 12 and spacer pieces to hold the two plates in position. The method is characterized in that, in order to produce at least one of the banks, there are five steps: A producing an insert plate 20 comprising strips, bridges of weakness 35, 36, 37 connecting the strips and capable of breaking under tension, and orifices separated by the walls 28, 29 and delimiting two lanes 31, 32; B interposing the insert plate 20 between the two plates 11, 12; C inserting a binder 41, 42 between the face 33 of the lanes 31 and the face 1-12 of the plate 11, and between the face 34-1 of the lanes 32 and the face 1-12 of the plate 12; D applying a force to bring the two plates 11, 12 into contact with the insert plate 20; E applying a force to part the two, upper and lower, plates 11, 12, to break the bridges 36, 37, 38 and bend the dividing walls 28, 29 so that, together with the two lanes, they form a Z shape. Another subject of the present invention is a heat exchanger produced according to the method of the invention.

Description

Procédé pour réaliser un échangeur thermique et échangeur thermique obtenu selon ce procédé Process for producing a heat exchanger and heat exchanger obtained according to this process
La présente invention concerne les procédés pour réaliser un échangeur thermique, ainsi que les échangeurs thermiques réalisés selon ces procédés, en soulignant que ces échangeurs thermiques trouvent une application particulièrement avantageuse dans le cadre d'échanges thermiques à l'aide de fluides gazeux, comme de l'air ou analogue.The present invention relates to the processes for producing a heat exchanger, as well as the heat exchangers produced by these processes, by emphasizing that these heat exchangers find a particularly advantageous application in the context of heat exchange using gaseous fluids, such as air or the like.
Il existe des échangeurs thermiques qui comportent une pluralité de nappes au contact les unes des autres définissant chacune une circulation fluidique, chaque nappe comportant au moins deux plaques pleines réalisées en un matériau étanche et maintenues à distance l'une de l'autre par des moyens d'entretoises de différents types.There are heat exchangers which comprise a plurality of plies in contact with each other each defining a fluid flow, each ply comprising at least two solid plates made of a tight material and kept at a distance from each other by means of spacers of different types.
Cependant, les échangeurs connus de ce type ont un prix de revient relativement élevé et en outre ne sont pas très performants, ce qui ne leur permet pas d'être vulgarisés et utilisés dans tous types de domaines techniques, par exemple dans la ventilation des immeubles d'habitation et/ou industriels et/ou commerciaux pour la récupération de l'énergie calorifique véhiculée comme, par exemple, dans les appareils connus sous le sigle VMC.However, known exchangers of this type have a relatively high cost and also are not very efficient, which does not allow them to be popularized and used in all types of technical fields, for example in the ventilation of buildings residential and / or industrial and / or commercial for the recovery of heat energy conveyed as, for example, in devices known under the acronym VMC.
On connaît par exemple le document US 5,287,918 qui se rapporte à un échangeur de chaleur compact à « ailette-plaque » et à un procédé de fabrication d'un tel échangeur. L'échangeur comporte par exemple trois feuilles métalliques plates, par exemple en titane, empilées l'une sur l'autre, liées partiellement l'une à l'autre par un moyen de colle en sorte de permettre l'écartement des deux feuilles extérieures en introduisant entre les feuilles un gaz sous pression. La feuille intermédiaire est réalisée en un matériau superplastique, qui répond à une définition technique précise, que l'on peut résumer par un matériau qui comporte une phase de déformation plastique importante à haute température permettant donc des allongements à rupture importants. Une fois les feuilles extérieures écartées, la feuille intermédiaire s'est déformée en sorte de définir deux conduits de circulation fluide de part et d'autre de celle-ci, et entre les deux feuilles extérieures de l'empilage, respectivement.For example, document US Pat. No. 5,287,918 relates to a compact "fin-plate" heat exchanger and to a process for manufacturing such an exchanger. The exchanger comprises, for example, three flat metal sheets, for example made of titanium, stacked one on the other, partially bonded to each other by means of glue so as to allow the spacing of the two outer sheets. introducing between the sheets a gas under pressure. The intermediate sheet is made of a superplastic material, which meets a precise technical definition, which can be summarized by a material that has a high plastic deformation phase at high temperature thus allowing significant elongations break. Once the outer sheets apart, the intermediate sheet has deformed so as to define two fluid flow conduits on either side of it, and between the two outer sheets of stacking, respectively.
On connaît en outre le document US 2006/0070728 qui se rapporte à un échangeur de chaleur destiné à un système de ventilation pour construction en sorte d'optimiser le remplacement de l'air intérieur par de l'air extérieur. Ce document décrit notamment un échangeur conventionnel qui comprend une pluralité de plaques plates minces stratifiées entre lesquelles sont disposées respectivement des plaques plissées lisses. L'air extérieur passe entre les plis formés par une plaque plissée entre deux plaques plates, formant une nappe de circulation d'air, alors que l'air intérieur passe entre les plis formés par la plaque plissée adjacente d'une nappe adjacente similaire. Deux nappes adjacentes forment deux circulations d'air, intérieur et extérieur respectivement, selon deux sens de circulation à 90°. L'invention selon ce document consiste à remplacer les plaques plissées lisses par des plaques plissées percées afin d'augmenter la turbulence de l'air lors de sa traversée de l'échangeur, et ainsi d'améliorer les performances de ce dernier. En outre les plis peuvent avantageusement être disposés de biais par rapport à la direction de l'écoulement de l'air. Les feuilles de l'échangeur peuvent être en aluminium ou en papier. Les feuilles intermédiaires percées peuvent être réalisées dans un film de résine poreuse.Also known is document US 2006/0070728 which relates to a heat exchanger for a ventilation system for construction in order to optimize the replacement of the indoor air by outside air. In particular, this document describes a conventional exchanger comprising a plurality of thin flat laminated plates between which smooth pleated plates are respectively disposed. The outside air passes between the folds formed by a pleated plate between two flat plates, forming an air flow sheet, while the interior air passes between the folds formed by the adjacent pleated plate of a similar adjacent web. Two adjacent sheets form two air flows, inside and outside respectively, in two directions of circulation at 90 °. The invention according to this document consists in replacing the pleated smooth plates by pierced pleated plates in order to increase the turbulence of the air during its crossing of the exchanger, and thus to improve the performance of the latter. In addition, the folds may advantageously be arranged obliquely with respect to the direction of the flow of air. The leaves of the exchanger may be aluminum or paper. The pierced intermediate sheets may be made of a porous resin film.
Aussi, la présente invention a-t-elle pour but de mettre en œuvre un procédé pour réaliser un échangeur thermique qui pallie au moins en grande partie les inconvénients mentionnés ci-dessus des échangeurs thermiques de l'art antérieur. Plus particulièrement, la présente invention a pour but de mettre en œuvre un procédé pour réaliser un échangeur thermique d'une plus faible masse que les échangeurs de l'art antérieur, ayant une perte de charge réduite dans les circulations fluidiques et un faible coût de fabrication, tout en améliorant les échanges thermiques entre les nappes, en s'affranchissant des limites dimensionnelles propres aux techniques de l'art antérieur et en augmentant la résistance aux différences de pression entre les nappes de circulations fluidiques. Plus précisément, la présente invention a pour objet un procédé pour réaliser un échangeur thermique comportant une pluralité de nappes au contact les unes des autres définissant chacune une circulation fluidique, chaque nappe comportant deux plaques pleines respectivement dites supérieure et inférieure réalisées en un matériau étanche et des moyens d'entretoises pour maintenir les deux plaques pleines à distance l'une de l'autre, caractérisé par le fait que la réalisation d'au moins l'une des dites nappes comporte les étapes suivantes :Also, the object of the present invention is to implement a method for producing a heat exchanger which at least largely overcomes the aforementioned drawbacks of heat exchangers of the prior art. More particularly, the present invention aims to implement a method for producing a heat exchanger of a lower mass than the exchangers of the prior art, having a reduced pressure drop in the fluidic circulation and a low cost of manufacturing, while improving the heat exchange between the layers, by overcoming the dimensional limits specific to the techniques of the prior art and by increasing the resistance to pressure differences between the layers of fluid flow. More specifically, the subject of the present invention is a method for producing a heat exchanger comprising a plurality of plies in contact with each other each defining a fluid flow, each ply comprising two upper and lower solid plates respectively made of a waterproof material and spacer means for holding the two solid plates at a distance from each other, characterized in that the production of at least one of said plies comprises the following steps:
(A) réalisation d'une plaque intercalaire comportant : • une pluralité de bandes,(A) producing a spacer plate comprising: • a plurality of strips,
• des ponts de faiblesse reliant lesdites bandes de façon qu'elles soient parallèles entre elles, lesdits ponts de faiblesse étant aptes à se rompre à la traction, etWeak bridges joining said strips so that they are parallel to one another, said weak bridges being able to break with traction, and
• une pluralité d'orifices réalisés dans chaque bande de façon que ces orifices délimitent, le long des deux bords longitudinaux de ladite bande, deux pistes continues respectivement dites gauche et droite, les orifices étant séparés les uns des autres par des parois de séparation reliant les deux pistes, chaque piste ayant une face dite supérieure et une face dite inférieure, (B) interposition de ladite plaque intercalaire entre les deux plaques pleines étanches supérieure et inférieure,A plurality of orifices made in each strip so that these orifices delimit, along the two longitudinal edges of said strip, two continuous tracks respectively said left and right, the orifices being separated from each other by separating walls connecting the two tracks, each track having a so-called upper face and a so-called lower face, (B) interposition of said intermediate plate between the two upper and lower sealed solid plates,
(C) interposition de moyens de liant entre, d'une part la face supérieure de chaque piste gauche de toutes les bandes et la face inférieure de la plaque supérieure, et d'autre part la face inférieure de chaque piste droite de toutes les bandes et la face supérieure de la plaque inférieure,(C) interposing binder means between on the one hand the upper face of each left track of all the bands and the lower face of the upper plate, and on the other hand the lower face of each straight track of all the bands and the upper face of the lower plate,
(D) application d'une première force pour amener les deux plaques supérieure et inférieure au contact de la plaque intercalaire de façon que toutes les faces supérieures des pistes gauches adhèrent à la face inférieure de la plaque supérieure et que toutes les faces inférieures des pistes droites adhèrent à la face supérieure de la plaque inférieure, et(D) applying a first force to bring the two upper and lower plates into contact with the intermediate plate so that all the upper faces of the left tracks adhere to the lower face of the upper plate and all the lower faces of the tracks. straight lines adhere to the upper face of the lower plate, and
(E) application d'une seconde force pour écarter l'une de l'autre des deux plaques supérieure et inférieure, de façon que les ponts de faiblesse soient rompus et jusqu'à ce que les parois de séparation entre les orifices forment avec les deux plaques supérieure et inférieure un angle non nul.(E) applying a second force to separate one of the two upper and lower plates, so that the bridges of weakness are broken and until the partition walls between the orifices form a non-zero angle with the two upper and lower plates.
La présente invention a aussi pour objet un échangeur thermique obtenu avec le procédé défini ci-dessus. D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif mais nullement limitatif, dans lesquels :The present invention also relates to a heat exchanger obtained with the method defined above. Other characteristics and advantages of the invention will appear in the course of the following description given with reference to the accompanying drawings for illustrative but not limiting purposes, in which:
Les figures 1 et 2 représentent deux vues schématiques respectivement de côté et de dessus d'un mode de réalisation de l'échangeur thermique selon l'invention, etFIGS. 1 and 2 show two diagrammatic views respectively from the side and from above of one embodiment of the heat exchanger according to the invention, and
Les figures 3 à 5 représentent respectivement trois étapes de la mise en œuvre du procédé selon l'invention pour la réalisation d'un échangeur thermique selon l'invention en accord avec les figures 1 et 2.FIGS. 3 to 5 respectively represent three stages of the implementation of the method according to the invention for producing a heat exchanger according to the invention in accordance with FIGS. 1 and 2.
Il est tout d'abord précisé que, sur les figures, les mêmes références désignent les mêmes éléments, quelle que soit la figure sur laquelle elles apparaissent et quelle que soit la forme de représentation de ces éléments. De même, si des éléments ne sont pas spécifiquement référencés sur l'une des figures, leurs références peuvent être aisément retrouvées en se reportant à une autre figure. II est aussi précisé que les figures représentent essentiellement un seul mode de réalisation de l'objet selon l'invention, mais qu'il peut exister d'autres modes de réalisation qui répondent à la définition de cette invention.It is first of all specified that, in the figures, the same references designate the same elements, whatever the figure on which they appear and whatever the form of representation of these elements. Similarly, if elements are not specifically referenced in one of the figures, their references can be easily found by referring to another figure. It is also stated that the figures essentially represent a single embodiment of the object according to the invention, but that there may be other embodiments that meet the definition of this invention.
Il est en outre précisé que, lorsque, selon la définition de l'invention, l'objet de l'invention comporte "au moins un" élément ayant une fonction donnée, le mode de réalisation décrit peut comporter plusieurs de ces éléments. Réciproquement, si le mode de réalisation de l'objet selon l'invention tel qu'illustré comporte plusieurs éléments de fonction identique et si, dans la description, il n'est pas spécifié que l'objet selon cette invention doit obligatoirement comporter un nombre particulier de ces éléments, l'objet de l'invention pourra être défini comme comportant "au moins un" de ces éléments. II est enfin précisé que lorsque, dans la présente description, une expression définit à elle seule, sans mention particulière spécifique la concernant, un ensemble de caractéristiques structurelles, ces caractéristiques peuvent être prises, pour la définition de l'objet de la protection demandée, quand cela est techniquement possible, soit séparément, soit en combinaison totale et/ou partielle.It is furthermore specified that, when, according to the definition of the invention, the object of the invention comprises "at least one" element having a given function, the embodiment described may comprise several of these elements. Conversely, if the embodiment of the object according to the invention as illustrated has several elements of identical function and if, in the description, it is not specified that the object according to this invention must obligatorily comprise a number particular of these elements, the object of the invention may be defined as comprising "at least one" of these elements. Lastly, it should be noted that when, in the present description, an expression defines, by itself, without a specific particular mention concerning it, a set of structural characteristics, these characteristics may be taken, for the definition of the object of the protection requested, when technically possible, either separately, or in full and / or partial combination.
Il est tout d'abord rappelé, par référence aux figures 1 et 2, qu'un échangeur thermique 1 selon l'invention comporte une pluralité de nappes 2, 3, 4 au contact les unes des autres, chaque nappe définissant une circulation fluidique 5, 6 et comportant deux plaques pleines respectivement dites supérieure 11 et inférieure 12 réalisées en un matériau étanche et des moyens d'entretoises 14 pour maintenir les deux plaques pleines à distance l'une de l'autre. Ces moyens d'entretoise 14 permettent en outre de fractionner le flux du fluide en circulation 5, 6 dans le but de mieux contribuer aux échanges thermiques via les plaques supérieure et inférieure 11 , 12 entre les deux fluides circulant dans deux nappes consécutives. Comme représenté sur la figure 2, les circulations de fluide 5, 6 entre deux nappes juxtaposées, se font avantageusement à contre-courant afin de participer à l'amélioration des performances d'échange thermique entre les deux nappes.It is first recalled, with reference to FIGS. 1 and 2, that a heat exchanger 1 according to the invention comprises a plurality of plies 2, 3, 4 in contact with each other, each ply defining a fluid flow 5 , 6 and comprising two upper plates 11 respectively said upper and lower 12 made of a sealed material and spacer means 14 for holding the two solid plates at a distance from one another. These spacer means 14 also make it possible to split the flow of the circulating fluid 5, 6 in order to better contribute to the heat exchange via the upper and lower plates 11, 12 between the two fluids flowing in two consecutive layers. As shown in FIG. 2, the fluid circulations 5, 6 between two juxtaposed plies are advantageously countercurrent in order to participate in improving the heat exchange performance between the two plies.
Le procédé selon l'invention se caractérise essentiellement par le fait que la réalisation d'au moins l'une des nappes 2, 3, 4 comporte les cinq étapes A a E définies ci-après.The method according to the invention is essentially characterized in that the production of at least one of the plies 2, 3, 4 comprises the five steps A to E defined below.
La première étape A, plus particulièrement par référence à la figure 3, consiste en la réalisation d'une plaque intercalaire 20 comportant une pluralité de bandes 21 , 22, 23, des ponts de faiblesse 35, 36, 37 reliant ces bandes 21 , 22, 23 de façon qu'elles soient parallèles entre elles, étant précisé que ces ponts de faiblesse sont aptes à se rompre à la traction, et une pluralité d'orifices 25, 26, 27 réalisés dans chaque bande de façon qu'ils délimitent, le long des deux bords longitudinaux de la bande, deux pistes 31 , 32 continues comme représenté, ou discontinues (non représenté) respectivement dites gauche et droite," les orifices 25, 26, 27 étant séparés les uns des autres par des parois de séparation 28, 29 reliant les deux pistes, chaque piste ayant une face dite supérieure 33, 33-1 et une face dite inférieure 34, 34-1.The first step A, more particularly with reference to FIG. 3, consists in producing an intermediate plate 20 comprising a plurality of strips 21, 22, 23, weakness bridges 35, 36, 37 connecting these strips 21, 22. , 23 so that they are parallel to each other, it being specified that these weakness bridges are capable of breaking with traction, and a plurality of orifices 25, 26, 27 made in each strip so that they delimit, along the two longitudinal edges of the strip, two tracks 31, 32 continuous as shown, or discontinuous (not shown) respectively said left and right, " the orifices 25, 26, 27 being separated from each other by partition walls 28, 29 connecting the two tracks, each track having a so-called upper face 33, 33-1 and a so-called lower face 34, 34-1.
Il est à noter que la plaque intercalaire 20 peut adopter une forme de damier (non représenté) dont les carrés d'une des couleurs du damier seraient en fait des orifices, et dont les carrés de l'autre couleur du damier seraient constitués de matière, ces derniers étant reliés par les angles constituant de cette manière notamment les ponts de faiblesse décrits plus haut. Ainsi, chacune des bandes 21 , 22, 23 décrites plus haut serait constituée sur leurs bords respectifs de deux alignements de carrés discontinus, définissant les deux pistes 31 , 32 le long des deux bords longitudinaux de la bande, ces deux pistes 31 , 32 discontinues étant reliées entre elles par un alignement de carrés discontinus décalés définissant les parois de séparation 28, 29 décrites plus haut et reliant donc les deux pistes. Selon cette alternative de réalisation, les deux pistes 31 , 32 et les parois de séparation 28, 29, formant une bande déterminée, ainsi que deux bandes similaires adjacentes de part et d'autre de celle-ci, seraient reliés par les angles des carrés du damier constitués de matière, et formant les ponts de faiblesse.It should be noted that the spacer plate 20 can adopt a checkerboard shape (not shown) whose squares of one of the colors of the checkerboard would in fact be orifices, and whose squares of the other color of the checkerboard would consist of material , the latter being connected by the angles constituting in this way in particular the weakened bridges described above. Thus, each of the strips 21, 22, 23 described above would be constituted on their respective edges by two discontinuous line alignments, defining the two tracks 31, 32 along the two longitudinal edges of the strip, these two tracks 31, 32 are discontinuous. being interconnected by an alignment of discontinuous discontinuous squares defining the partition walls 28, 29 described above and thus connecting the two tracks. According to this alternative embodiment, the two tracks 31, 32 and the partition walls 28, 29, forming a determined band, as well as two adjacent similar bands on either side of it, would be connected by the angles of the squares. of the checkerboard made of matter, and forming the bridges of weakness.
Ces ponts de faiblesse peuvent être constitués de différentes façons, par exemple par des languettes reliant les bandes comme illustré sur les figures, ou par une seule languette continue entre deux bandes qui peut être obtenue en réalisant une rainure ou un sillon dans la plaque intermédiaire 20, ou encore par les jonctions de matière entre deux angles de deux carrés d'un damier comme décrit ci-dessus. La deuxième étape B consiste en l'interposition de la plaque intercalaire 20 ayant les caractéristiques définies ci-dessus et obtenue lors de la première étape A, entre les deux plaques pleines étanches supérieure 11 et inférieure 12, comme illustré sur la figure 4.These bridges of weakness can be constituted in different ways, for example by tongues connecting the strips as illustrated in the figures, or by a single continuous tab between two strips which can be obtained by making a groove or a groove in the intermediate plate 20 or by the junctions of matter between two angles of two squares of a checkerboard as described above. The second step B consists of the interposition of the spacer plate 20 having the characteristics defined above and obtained during the first step A, between the two upper solid sealing plates 11 and lower 12, as illustrated in FIG.
Une troisième étape C consiste en l'interposition de moyens de liant 41 , 42 entre, d'une part la face supérieure 33 de chaque piste gauche 31 de toutes les bandes 21 , 22, 23 et la face inférieure 1-11 de la plaque supérieure 11 , et d'autre part la face inférieure 34-1 de chaque piste droite 32 de toutes les bandes 21, 22, 23 et la face supérieure 1-12 de la plaque inférieure 12.A third step C consists of the interposition of binder means 41, 42 between, on the one hand, the upper face 33 of each left track 31 of all the strips 21, 22, 23 and the lower face 1-11 of the plate upper 11, and on the other hand the underside 34-1 of each straight track 32 of all the strips 21, 22, 23 and the upper face 1-12 of the lower plate 12.
Il est cependant précisé que cette troisième étape C peut être exécutée avant ou après la première étape A ou après la deuxième étape B définies précédemment, bien que, selon une caractéristique avantageuse du procédé qui sera donnée ci-après, cette troisième étape C sera de préférence exécutée avant la première étape A ou avant la deuxième étape B.It is however specified that this third step C can be performed before or after the first step A or after the second step B defined above, although, according to an advantageous characteristic of the method which will be given below, this third step C will be preference executed before the first step A or before the second step B.
Sur la figure 4, les moyens de liant 41 , 42 sont représentés pré- positionnés sur les faces 33 et 34-1 respectivement des pistes 31 , 32, mais il est bien évident qu'ils peuvent aussi être pré-positionnés directement sur les faces inférieure 1-11 et supérieure 1-12 respectivement des deux plaques 11 , 12 aux endroits où les faces supérieure et inférieure des pistes viendront au contact des faces inférieure et supérieure des deux plaques, comme explicité ci-après lors de la description des étapes suivantes de mise en oeuvre du procédé selon l'invention.In FIG. 4, the binder means 41, 42 are shown pre-positioned on the faces 33 and 34-1 respectively of the tracks 31, 32, but it is obvious that they can also be pre-positioned directly on the faces lower 1-11 and upper 1-12 respectively of the two plates 11, 12 at the places where the upper and lower faces of the tracks will come into contact with the lower and upper faces of the two plates, as explained below in the description of the following steps implementation of the method according to the invention.
Quant à la quatrième étape D, elle consiste en l'application d'une première force indiquée sur la figure 4 par les flèches F, pour amener les deux plaques supérieure 11 et inférieure 12 au contact de la plaque intercalaire 20 de façon que toutes les faces supérieures 33 des pistes gauches 31 adhèrent fixement 41 à la face inférieure 1-11 de la plaque supérieure 11 et que toutes les faces inférieures 34-1 des pistes droites 32 adhèrent fixement 42 à la face supérieure 1-12 de la plaque inférieure 12.As for the fourth step D, it consists of the application of a first force indicated in FIG. 4 by the arrows F, to bring the two upper plates 11 and lower 12 into contact with the intermediate plate 20 so that all upper faces 33 of the left tracks 31 adhere fixedly 41 to the lower face 1-11 of the upper plate 11 and all the lower faces 34-1 of the straight tracks 32 adhere firmly 42 to the upper face 1-12 of the lower plate 12 .
Selon la nature des moyens de liant 41 , 42, il peut être prévu de soumettre l'empilage des trois plaques à chauffage adapté.Depending on the nature of the binder means 41, 42, it may be provided to subject the stack of the three heat-matched plates.
La cinquième étape E du procédé est exécutée lorsque l'adhérence entre les pistes 31 , 32 et les plaques 11, 12 est parfaitement obtenue. Elle consiste, par référence à la figure schématique 5, en l'application d'une seconde force (en fait une force de sens contraire à la première force définie ci-avant et indiquée par les flèches F sur la figure 4) pour écarter les deux plaques supérieure et inférieure 11, 12 l'une de l'autre de façon que les ponts de faiblesse 36, 37, 38 soient rompus et jusqu'à ce que, par pliure, les parois de séparation 28, 29 entre les orifices 25 26, 27 forment un angle non nul avec les deux plaques supérieure et inférieure 11, 12.The fifth step E of the method is executed when the adhesion between the tracks 31, 32 and the plates 11, 12 is perfectly obtained. It consists, with reference to the schematic figure 5, in the application of a second force (in fact a force of direction opposite to the first force defined above and indicated by the arrows F in FIG. 4) to eliminate the two upper and lower plates 11, 12 of each other so that the bridges of weakness 36, 37, 38 are broken and until, by folding, the separation walls 28, 29 between the orifices 26, 27 form a non-zero angle with the two upper and lower plates 11, 12.
De façon préférentielle, pour obtenir un échangeur thermique rigide qui ne soit pas, par exemple, apte à vibrer et/ou se déformer notamment par gonflement lors de la mise en fonctionnement de la circulation fluidique, le procédé consiste à écarter les deux plaques supérieure et inférieure 11, 12 l'une de l'autre en leur appliquant la seconde force, jusqu'à ce que les parois de séparation 28, 29 entre les orifices 25, 26, 27 forment avec les deux plaques supérieure et inférieure 11 , 12 un angle sensiblement égal à quatre- vingt-dix degrés.Preferably, to obtain a rigid heat exchanger which is not, for example, capable of vibrating and / or deforming in particular by swelling during the operation of the fluid flow, the method consists of removing the two upper and lower plates. 11, 12 of the other by applying the second force to them, until the partition walls 28, 29 between the orifices 25, 26, 27 form with the two upper and lower plates 11, 12 a angle substantially equal to ninety degrees.
A la fin de l'exécution de la cinquième étape E, l'échangeur thermique se présente comme schématiquement illustré dans le vue de côté représentée sur la figure 5, dans laquelle apparaissent les ponts de faiblesse 35, 36, 37 rompus, les entretoises 14 séparées par la largeur des orifices 25, 26, 27 et qui se présentent sensiblement sous la forme de "Z" ayant leurs deux barres horizontales perpendiculaires à leur barre verticale, les barres horizontales correspondant aux deux pistes 31, 32 et les barres de liaison verticales correspondant aux parois de séparation 28, 29 des orifices 25, 26, 27. II à noter que les deux lignes de pliure des bandes en Z sont obtenues sur les deux lignes immatérielles 101 , 102 représentées en traits interrompus qui passent par les deux bords 51 , 52 des orifices qui délimitent les pistes gauche et droite 31 , 32. Ces pliures sont favorisées par l'existence-même des orifices et par les faibles largeur et épaisseur des parois de séparation 28, 29 entre ces orifices. En fait, ces deux lignes de pliure se font automatiquement d'elles-mêmes lors de l'application de la seconde force.At the end of the execution of the fifth step E, the heat exchanger is shown schematically in the side view shown in Figure 5, in which appear the bridges of weakness 35, 36, 37 broken, the spacers 14 separated by the width of the orifices 25, 26, 27 and which are substantially in the form of "Z" having their two horizontal bars perpendicular to their vertical bar, the horizontal bars corresponding to the two tracks 31, 32 and the vertical connecting bars corresponding to the partition walls 28, 29 of the orifices 25, 26, 27. It should be noted that the two fold lines of the Z-strips are obtained on the two intangible lines 101, 102 represented in broken lines which pass through the two edges 51 , 52 of the orifices which delimit the left and right tracks 31, 32. These folds are favored by the very existence of the orifices and by the small width and thickness of the walls of the separator. 28, 29 between these orifices. In fact, these two fold lines automatically do themselves when applying the second force.
Selon une caractéristique préférentielle du procédé, les orifices 25, 26, 27 de chaque bande 21, 22, 23 sont réalisés de façon que leurs bords 51, 52 mentionnés ci-dessus soient colinéaires 101, 102 et parallèles à l'axe longitudinal des pistes, dans le but de faciliter la pliure en Z comme défini ci- dessus. La circulation des fluides à contre-courant entre deux nappes juxtaposées est avantageusement établie dans la direction des deux lignes immatérielles 101 , 102 correspondant aux deux lignes de pliure des bandes en Z, et entre les bandes 21 , 22, 23 redressées. La largeur des orifices 25, 26, 27 de chaque bande 21 , 22, 23 permet de contrôler que la circulation d'un fluide 5, 6 est plutôt canalisée entre les bandes 21 , 22, 23 d'une nappe, lorsque cette largeur est faible, ou puisse être répartie en outre à travers les orifices 25, 26, 27 de chaque bande 21, 22, 23, de manière divergente, puis convergente, entre l'entrée 5en, 6en> et la sortie 5SO, 6S0 du fluide pour chaque nappe considérée.According to a preferred feature of the method, the orifices 25, 26, 27 of each strip 21, 22, 23 are made so that their edges 51, 52 mentioned above are collinear 101, 102 and parallel to the longitudinal axis of the tracks. , in order to facilitate the Z-fold as defined above. The countercurrent flow of fluids between two juxtaposed plies is advantageously established in the direction of the two immaterial lines 101, 102 corresponding to the two fold lines of the Z-strips, and between the strips 21, 22, 23 straightened. The width of the orifices 25, 26, 27 of each strip 21, 22, 23 makes it possible to control that the circulation of a fluid 5, 6 is channelized between the strips 21, 22, 23 of a sheet, when this width is low, or may be further distributed through the orifices 25, 26, 27 of each strip 21, 22, 23, in a divergent and then convergent manner, between the inlet 5 e n, 6en > and the outlet 5 SO , 6 S0 of the fluid for each considered web.
Comme représenté sur la figure 2, le caractère à contre-courant de la circulation relative des deux fluides 5, 6 de deux nappes adjacentes, est obtenu, en coopération avec le guidage du flux des fluides entre les bandes 21 , 22, 23, par des entrées et sorties symétriques entre les deux nappes, par rapport à un plan perpendiculaire aux bandes 21 , 22, 23 et au plan de la nappe : par exemple, sur la figure 2, l'entrée 5eπ du fluide dans une nappe 3 se fait en bas à droite de la surface de Ia nappe 3 et la sortie 5SO en haut à gauche de la surface de la nappe 3 ; et l'entrée 6en du fluide dans une nappe 2 adjacente se fait en haut à droite de la nappe 2 et la sortie 6S0 en bas à gauche de la nappe 2 (les références de position sont faites par rapport à la vue de la figure 2).As represented in FIG. 2, the countercurrent characteristic of the relative circulation of the two fluids 5, 6 of two adjacent plies is obtained, in cooperation with the guide of the flow of fluids between the strips 21, 22, 23, by symmetrical inputs and outputs between the two plies, with respect to a plane perpendicular to the strips 21, 22, 23 and the plane of the ply: for example, in FIG. 2, the inlet 5 eπ of the fluid in a ply 3 is made at the bottom right of the surface of the sheet 3 and the outlet 5 SO at the top left of the surface of the sheet 3; and the inlet 6 in the fluid in an adjacent layer 2 is at the top right of the web 2 and the outlet 6 S0 at the bottom left of the sheet 2 (the positional references are made with respect to the view of the Figure 2).
Il est à noter que, de manière connue, le caractère à contre courant de la circulation des fluides entre deux nappes adjacentes, sera d'autant plus efficace que, en regard de la figure 2, la distance entre les entrées 6en et 5en ou entre les sorties 6S0 et 5S0, sera grande devant la distance entre l'entrée 5en et la sortie 6S0 ou entre l'entrée 6en et la sortie 5S0, en sorte que la longueur des canaux de circulation de fluide définis entre les moyens d'entretoise 14 soit grande devant la largeur de la nappe définie par la juxtaposition de ces canaux de circulation, formant la largeur des côtés de la nappe correspondant aux parois 70-3 ou 70-4 du boîtier 70.It should be noted that, in known manner, the character against the current of the circulation of fluids between two adjacent layers, will be more effective, compared to Figure 2, the distance between the inlets 6 and 5 or between the outputs 5 and 6 S0 S0 will be large compared with the distance between the inlet 5 and the outlet 6 or S0 between the inlet 6 and the outlet 5 S0, so that the length of the fluid flow channels defined between the spacer means 14 is large in front of the width of the web defined by the juxtaposition of these circulation channels, forming the width of the sides of the sheet corresponding to the walls 70-3 or 70-4 of the housing 70.
Le procédé selon l'invention est particulièrement intéressant dans l'objectif des buts à atteindre définis au préambule de la présente description, à savoir notamment obtenir un échangeur permettant de très bons échanges thermiques tout en ayant un faible coût de fabrication et un faible poids car il est possible d'utiliser des plaques 11 , 12, 20 d'épaisseur comprise sensiblement entre trente et mille microns, en des matériaux comme de l'aluminium, du cuivre, des alliages à base d'aluminium ou de cuivre, ou tout autre matériau bon conducteur thermique.The method according to the invention is particularly interesting for the purpose of achieving the goals defined in the preamble of the present description, namely to obtain a heat exchanger allowing very good heat exchange while having a low manufacturing cost and a low weight because it is possible to use plates 11, 12, 20 with a thickness of substantially between thirty and a thousand microns, in materials such as aluminum, aluminum, copper, alloys based on aluminum or copper, or any other good thermal conductor material.
Quant aux moyens de liant 41 , 42, ils peuvent être de différents types. Mais ils seront de préférence choisis parmi ceux qui agissent selon au moins l'une des fonctions suivantes : collage, brasage, soudage.As for the binder means 41, 42, they can be of different types. But they will preferably be chosen from those which act according to at least one of the following functions: gluing, brazing, welding.
De plus, toujours dans le but d'obtenir un coût de fabrication le plus faible possible, ces moyens de liant 41 42 seront choisis parmi ceux qui peuvent être appliqués par sérigraphie, ou par micro projection, par exemple à plat, sur au moins l'un des éléments suivants : les faces supérieures et inférieures des pistes 33, 34-1 , la face inférieure 1-11 de la plaque supérieure 11 , la face supérieure 1-12 de la plaque inférieure 12, dont il est bien connu que ces techniques d'application peuvent être facilement automatisées.In addition, always with the aim of obtaining a manufacturing cost as low as possible, these binder means 41 will be chosen from those which can be applied by screen printing, or by micro-projection, for example flat, on at least l one of the following: the upper and lower faces of the tracks 33, 34-1, the lower face 1-11 of the upper plate 11, the upper face 1-12 of the lower plate 12, of which it is well known that these Application techniques can be easily automated.
Dans le même but, la réalisation des orifices 25, 26, 27 peut être faite selon au moins l'une des techniques suivantes : micro-découpage, poinçonnage, découpage au laser, projection d'un jet d'eau sous pression qui peuvent être très facilement robotisées, usinage chimique ou électrochimique.For the same purpose, the realization of the orifices 25, 26, 27 can be made according to at least one of the following techniques: micro-cutting, punching, laser cutting, projection of a water jet under pressure which can be very easily robotized, chemical or electrochemical machining.
Il est mentionné, comme visible sur la figure 3, qu'il est possible de laisser, sur au moins l'une des deux bandes latérales 21 de la plaque intercalaire 20, une zone médiane 60 sans orifice, dans le but par exemple d'obturer au moins partiellement latéralement la nappe réalisée avec une telle plaque intercalaire 20 entre les deux plaques 11 , 12.It is mentioned, as can be seen in FIG. 3, that it is possible to leave, on at least one of the two lateral strips 21 of the intermediate plate 20, a central zone 60 without an orifice, for the purpose for example of closing at least partially laterally the web made with such an intermediate plate 20 between the two plates 11, 12.
Cette zone médiane 60 sans orifice peut malgré tout être bordée à chacune de ses extrémités par au moins un orifice 25-26 pour constituer l'entrée et la sortie de la nappe, figure 2. II est aussi possible qu'au moins l'une des deux bandes 21 latérales ne comporte par d'orifice, ce qui permet ainsi d'obtenir par exemple une nappe de circulation totalement obturée d'un côté et partiellement de l'autre, les entrée et sortie étant dans cette réalisation du même côté. Bien que, sur la figure 3, les orifices aient tous la même longueur, il est possible de réaliser des orifices 25, 26, 27 ayant des longueurs différentes, et même de commencer à réaliser des orifices à partir d'un bord même de la plaque intercalaire 20, comme illustré sur cette figure 3 avec l'orifice 1-25, dans le but par exemple de ménager des volumes tampons de répartition du fluide avant qu'il ne s'écoule dans la partie de la nappe comportant les entretoises 14.This median zone 60 without an orifice can nevertheless be bordered at each of its ends by at least one orifice 25-26 to form the entry and the exit of the ply, FIG. 2. It is also possible that at least one the two lateral strips 21 have no orifice, which thus allows to obtain for example a traffic sheet completely closed on one side and partially on the other, the inlet and outlet being in this embodiment on the same side. Although, in FIG. 3, the orifices all have the same length, it is possible to make orifices 25, 26, 27 having different lengths, and even to start making holes from an edge of the same. intermediate plate 20, as illustrated in this FIG. 3 with the orifice 1-25, for the purpose for example of providing buffer volumes for distributing the fluid before it flows into the part of the sheet comprising the spacers 14 .
Pour faciliter le pliage en Z des bandes 21 , 22, 23 comme défini auparavant, le procédé consiste à réaliser les orifices 25-26 ayant l'une des formes préférentielles suivantes : rectangulaire, carrée, triangulaire, trapézoïdale, rond , ovale.To facilitate the Z-folding of the strips 21, 22, 23 as previously defined, the method consists in producing the orifices 25-26 having one of the following preferred forms: rectangular, square, triangular, trapezoidal, round, oval.
Pour éviter l'apparition de déchirures dans la plaque intermédiaire 20 lors du redressement des parois de séparation 28, 29, il est avantageux de réaliser les orifices 25, 26, 27 avec des bords ne comportant pas d'arêtes vives suivant une direction perpendiculaire au plan de la plaque intermédiaire. Dans le cas par exemple des formes possibles mentionnées ci-dessus, il est avantageux que les orifices aient des coins arrondis.To avoid the appearance of tears in the intermediate plate 20 during the recovery of the partition walls 28, 29, it is advantageous to make the orifices 25, 26, 27 with edges having no sharp edges in a direction perpendicular to the plane of the intermediate plate. In the case for example of the possible forms mentioned above, it is advantageous that the orifices have rounded corners.
Il a été décrit ci-dessus un mode de mise en œuvre du procédé selon l'invention pour réaliser une des nappes de l'échangeur thermique selon l'invention, mais il est bien évident que toutes les nappes d'un même échangeur pourront être réalisées de la même façon, et simultanément, en soulignant que l'une des deux plaques pleines limitant une nappe est utilisée comme une des deux plaques pleines pour la nappe consécutive, et ainsi de suite. Dans ce cas, toutes les nappes 2, 3, 4 seront réalisées en une seule fois. Une telle réalisation est du domaine de l'homme du métier qui, connaissant la description faite ci-dessus, saura mettre en œuvre le procédé pour réaliser un échangeur selon l'invention à plusieurs nappes. La mise en œuvre du procédé pour réaliser un échangeur selon l'invention à plusieurs nappes ne sera donc pas plus amplement décrite ici dans l'unique souci de simplifier la présente description.It has been described above a mode of implementation of the method according to the invention to achieve one of the plies of the heat exchanger according to the invention, but it is obvious that all the plies of the same exchanger can be performed in the same way, and simultaneously, emphasizing that one of the two full plates limiting a web is used as one of the two solid plates for the consecutive web, and so on. In this case, all the plies 2, 3, 4 will be made at one time. Such an embodiment is in the field of those skilled in the art who, knowing the description made above, will implement the method for producing a heat exchanger according to the invention with several layers. The implementation of the method for producing an exchanger according to the invention with several layers will therefore not be further described here for the sole purpose of simplifying the present description.
Dans ce cas cependant, comme illustré schématiquement sur la figure 1 et plus visible sur la figure 5, le procédé selon l'invention consistera avantageusement à réaliser les plaques intercalaires 20 et les agencer les unes par rapport aux autres entre les plaques inférieures et supérieures 11 , 12 de façon que, lorsque les plaques inférieures et supérieures 11, 12 limitant au moins deux nappes consécutives sont écartées les unes des autres, les parois de séparation 28, 29 entre les orifices 25, 26, 27 d'une nappe sont respectivement situées dans le même plan que les parois de séparation 28, 29 entre les orifices 25, 26, 27 de l'autre nappe.In this case, however, as illustrated schematically in FIG. 1 and more visible in FIG. 5, the method according to the invention will consist of advantageously to make the spacer plates 20 and arrange them relative to each other between the lower and upper plates 11, 12 so that when the lower and upper plates 11, 12 limiting at least two consecutive sheets are spaced from each other , the partition walls 28, 29 between the openings 25, 26, 27 of a web are respectively located in the same plane as the partition walls 28, 29 between the orifices 25, 26, 27 of the other web.
Bien entendu, il en sera de même pour toutes les plaques intercalaires 20. C'est-à-dire, toutes les parois de séparation 28, 29 entre les orifices 25, 26, 27 d'une nappe seront respectivement situées dans le même plan que toutes les parois de séparation 28, 29 de toutes les autres nappes.Of course, it will be the same for all the spacer plates 20. That is to say, all the partition walls 28, 29 between the orifices 25, 26, 27 of a sheet will respectively be located in the same plane all the partition walls 28, 29 of all the other layers.
L'échangeur 1 ainsi obtenu sera plus résistant à la pression aussi bien extérieure qu'intérieure, les parois de séparation 28, 29 toutes les unes au-dessus des autres et alignées formant des ensembles d'entretoises unitaires pour l'ensemble des nappes. Ces entretoises unitaires évitent par exemple des déformations des plaques inférieures et supérieures 11 , 12 au niveau des extrémités des parois de séparation 28, 29, ce qui pourrait se produire si elles étaient par exemple décalées en quinconce.The heat exchanger 1 thus obtained will be more resistant to pressure, both external and internal, the partition walls 28, 29 all above one another and aligned forming unitary spacer assemblies for all the layers. These unitary spacers avoid for example deformations of the lower and upper plates 11, 12 at the ends of the partition walls 28, 29, which could occur if they were for example offset staggered.
Cette configuration avantageuse en plusieurs nappes est schématiquement illustrée sur les figures 1 et 5.This advantageous configuration in several layers is schematically illustrated in FIGS. 1 and 5.
Cependant, de façon avantageuse, le procédé peut comporter une sixième étape supplémentaire F qui consiste, après avoir réalisé plusieurs nappes au contact les unes des autres, à enfermer cette pluralité de nappes 2, 3, 4 dans un boîtier 70, figures 1 et 2, comportant des parois 70-1 , 70-2, 70-3, 70-4 obturant partiellement au moins l'un des côtés des nappes, étant en outre définies, dans les parois du boîtier, des entrées et des sorties 5Θn, 5S0, 6en, 6S0 pour chaque nappe 2, 3, 4 de circulation fluidique 5, 6.However, advantageously, the method may comprise a sixth additional step F which consists, after having made several sheets in contact with each other, to enclose this plurality of plies 2, 3, 4 in a housing 70, FIGS. 1 and 2 , having walls 70-1, 70-2, 70-3, 70-4 partially sealing at least one side of the plies, being further defined in the walls of the housing, inputs and outputs 5 Θn , 5 S0 , 6 in , 6 S0 for each sheet 2, 3, 4 of fluid circulation 5, 6.
Pour des raisons par exemple d'intégration dans des systèmes plus complexes, certaines extrémités des nappes peuvent être obturées par des bouchons fixes ou amovibles afin de faciliter leur nettoyage.For reasons for example of integration in more complex systems, some ends of the plies can be closed by fixed or removable caps to facilitate their cleaning.
La présente invention concerne aussi un échangeur thermique 1 réalisé selon le procédé décrit ci-dessus. A Ia description faite ci-dessus, il apparaît que le procédé selon l'invention pour réaliser un échangeur thermique est très économique car, outre le fait qu'il peut être mis en œuvre avec peu de matière, presque toutes les phases des différentes étapes peuvent facilement être automatisées, par exemple au moyen de robots à organes de préhension (ventouses à vide) notamment pour manipuler les plaques 11 , 12, 20, de robots de découpage et de robots pour déposer les moyens de liant 41 , 42, fonctionnant selon les techniques mentionnées au long de la présente description explicitant les différentes étapes de mise en œuvre du procédé selon l'invention.The present invention also relates to a heat exchanger 1 made according to the method described above. As described above, it appears that the method according to the invention for producing a heat exchanger is very economical because, besides the fact that it can be implemented with little material, almost all phases of the various stages can easily be automated, for example by means of robot grippers (vacuum suction cups) in particular for handling the plates 11, 12, 20, cutting robots and robots for depositing the binder means 41, 42, operating according to the techniques mentioned throughout this description explaining the various steps of implementation of the method according to the invention.
Enfin, il est bien précisé et souligné que, au sens de la présente description, les qualificatifs "supérieure" et "inférieure", "droite" et "gauche" ne sont utilisés que pour pouvoir facilement différencier, uniquement par rapport au plan des figures, les positions des deux plaques pleines 11 , 12 l'une par rapport à l'autre, les positions respectives des pistes 31 , 32 d'une même bande, et les faces respectives des pistes. En aucune façon, par exemple, les qualificatifs "supérieure" et "inférieure" doivent être compris comme définissant uniquement une position de plaques horizontales 11, 12 à des niveaux respectifs suivant une verticale. Ces plaques 11 , 12 pourront être positionnées suivant n'importe qu'elle direction par rapport au sol terrestre. Finally, it is clearly stated and underlined that, for the purpose of the present description, the qualifiers "upper" and "lower", "right" and "left" are used only to be able to easily differentiate, only with respect to the plane of the figures , the positions of the two full plates 11, 12 relative to each other, the respective positions of the tracks 31, 32 of the same band, and the respective faces of the tracks. In no way, for example, the qualifiers "upper" and "lower" should be understood as defining only a position of horizontal plates 11, 12 at respective levels in a vertical direction. These plates 11, 12 may be positioned in any direction relative to the ground.

Claims

R E V E N D I C A T I O N S
1. Procédé pour réaliser un échangeur (1) comportant une pluralité de nappes (2, 3, 4) au contact les unes des autres définissant chacune une circulation fluidique (5, 6), chaque nappe comportant deux plaques pleines respectivement dites supérieure (11) et inférieure (12) réalisées en un matériau étanche et des moyens d'entretoises (14) pour maintenir les deux plaques pleines à distance l'une de l'autre, caractérisé par le fait que la réalisation d'au moins l'une des dites nappes comporte les étapes suivantes:1. A method for producing an exchanger (1) comprising a plurality of plies (2, 3, 4) in contact with each other each defining a fluid flow (5, 6), each ply comprising two solid plates respectively said upper (11). ) and lower (12) made of a waterproof material and spacer means (14) for holding the two solid plates at a distance from each other, characterized in that the production of at least one said layers comprises the following steps:
(A) réalisation d'une plaque intercalaire (20) comportant :(A) producing a spacer plate (20) comprising:
• une pluralité de bandes (21 , 22, 23),A plurality of strips (21, 22, 23),
• des ponts de faiblesse (35, 36, 37) reliant lesdites bandes (21 , 22, 23) entre elles de façon qu'elles soient parallèles entre elles, lesdits ponts de faiblesse étant aptes à se rompre à la traction, etWeak bridges (35, 36, 37) connecting said strips (21, 22, 23) to each other so that they are parallel to each other, said bridges of weakness being able to break with traction, and
• une pluralité d'orifices (25, 26, 27) réalisé dans chaque bande de façon que ces orifices délimitent, le long des deux bords longitudinaux de chaque bande, deux pistes (31 , 32) continues respectivement dite gauche et droite, les orifices (25, 26, 27) étant séparés les uns des autres par des parois de séparation (28, 29) reliant les deux pistes, chaque piste ayant une face dite supérieure (33, 33-1) et une face dite inférieure (34, 34-1),A plurality of orifices (25, 26, 27) made in each strip so that these orifices delimit, along the two longitudinal edges of each strip, two continuous tracks (31, 32), respectively, said left and right, the orifices (25, 26, 27) being separated from each other by partition walls (28, 29) connecting the two tracks, each track having a so-called upper face (33, 33-1) and a so-called lower face (34, 34-1)
(B) interposition de ladite plaque intercalaire (20) entre les deux plaques pleines étanches supérieure (11) et inférieure (12),(B) interposing said spacer plate (20) between the two upper solid sealed plates (11) and the lower one (12),
(C) interposition de moyens de liant (41 , 42) entre, d'une part la face supérieure (33) de chaque piste gauche (31) de toutes les bandes (21, 22,(C) interposing binder means (41, 42) between, on the one hand, the upper face (33) of each left track (31) of all the strips (21, 22,
23) et la face inférieure de la plaque supérieure (11), et d'autre part la face inférieure (34-1) de chaque piste droite (32) de toutes les bandes (21 , 22, 23) et la face supérieure de la plaque inférieure (12),23) and the lower face of the upper plate (11), and on the other hand the lower face (34-1) of each straight track (32) of all the strips (21, 22, 23) and the upper face of the lower plate (12),
(D) application d'une première force pour amener les deux plaques supérieure (11) et inférieure (12) au contact de la plaque intercalaire (20), de façon que toutes les faces supérieures (33) des pistes gauches (31) adhèrent (41) à la face inférieure de la plaque supérieure (11) et que toutes les faces inférieures (34-1) des pistes droites (32) adhèrent (42) à la face supérieure de la plaque inférieure (12), et(D) applying a first force to bring the two upper (11) and lower (12) plates into contact with the intermediate plate (20), so that all the upper faces (33) of the left tracks (31) adhere (41) to the underside of the top plate (11) and that all the lower faces (34-1) of the straight tracks (32) adhere (42) to the upper face of the lower plate (12), and
(E) application d'une seconde force pour écarter les deux plaques supérieure et inférieure (11 , 12) l'une de l'autre de façon que les ponts de faiblesse (36, 37, 38) soient rompus et jusqu'à ce que les parois de séparation (28, 29) entre les orifices (25, 26, 27) forment avec les deux plaques supérieure et inférieure (11, 12) un angle non nul.(E) applying a second force to separate the two upper and lower plates (11, 12) from each other so that the weakness bridges (36, 37, 38) are broken and until that the partition walls (28, 29) between the orifices (25, 26, 27) form a non-zero angle with the two upper and lower plates (11, 12).
2. Procédé selon la revendication 1 , caractérisé par le fait que les orifices (25, 26, 27) de chaque bande (21 , 22, 23) sont réalisés de façon que leurs bords (51 , 52) délimitant les pistes gauche et droite (31 , 32) soient colinéaires (101 , 102) et parallèles à l'axe longitudinal des dites pistes.2. Method according to claim 1, characterized in that the orifices (25, 26, 27) of each strip (21, 22, 23) are made so that their edges (51, 52) delimiting the left and right tracks (31, 32) are collinear (101, 102) and parallel to the longitudinal axis of said tracks.
3. Procédé selon l'une des revendications 1 et 2, caractérisé par le fait qu'il consiste à utiliser des plaques (11 , 12, 20) ayant des épaisseurs comprises sensiblement entre trente et mille microns.3. Method according to one of claims 1 and 2, characterized in that it consists in using plates (11, 12, 20) having thicknesses substantially between thirty and a thousand microns.
4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait que les moyens de liant (41 , 42) agissent selon au moins l'une des fonctions suivantes : collage, brasage, soudage.4. Method according to one of claims 1 to 3, characterized in that the binder means (41, 42) act in at least one of the following functions: gluing, brazing, welding.
5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait qu'il consiste à appliquer lesdits moyens de liant (41 , 42) par au moins l'une des deux techniques suivantes, sérigraphie et micro projection, sur au moins l'un des éléments suivants : les faces supérieures et inférieures des pistes, la face inférieure de la plaque supérieure, la face supérieure de la plaque inférieure.5. Method according to one of claims 1 to 4, characterized in that it consists in applying said binder means (41, 42) by at least one of the two following techniques, serigraphy and micro projection, on to least one of the following: the upper and lower faces of the tracks, the lower face of the upper plate, the upper face of the lower plate.
6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait qu'il consiste à réaliser lesdits orifices (25, 26, 27) selon au moins l'une des techniques suivantes : micro-découpage, poinçonnage, découpage au laser, projection d'un jet d'eau sous pression, usinage chimique ou électrochimique. 6. Method according to one of claims 1 to 5, characterized in that it consists in producing said orifices (25, 26, 27) according to at least one of the following techniques: micro-cutting, punching, cutting at laser, projection of a water jet under pressure, chemical or electrochemical machining.
7. Procédé selon l'une des revendications 1 à 6, caractérisé par le fait qu'il consiste à laisser, sur au moins l'une des deux bandes latérales (21) de la plaque intercalaire (20), une zone médiane (60) sans orifice.7. Method according to one of claims 1 to 6, characterized in that it consists in leaving, on at least one of the two sidebands (21) of the intermediate plate (20), a central zone (60 ) without orifice.
8. Procédé selon l'une des revendications 1 à 7, caractérisé par le fait qu'il consiste à réaliser des orifices (25-26) ayant l'une des formes suivantes: rectangulaire, carrée, triangulaire, trapézoïdale.8. Method according to one of claims 1 to 7, characterized in that it consists in making orifices (25-26) having one of the following forms: rectangular, square, triangular, trapezoidal.
9. Procédé selon l'une des revendications 1 à 8, caractérisé par le fait qu'il consiste à réaliser des orifices (25-26) avec des bords ne comportant pas d'arêtes vives suivant une direction perpendiculaire au plan de la plaque intermédiaire (20).9. Method according to one of claims 1 to 8, characterized in that it consists in making orifices (25-26) with edges having no sharp edges in a direction perpendicular to the plane of the intermediate plate (20).
10. Procédé selon l'une des revendications 1 à 9, caractérisé par le fait qu'il consiste à réaliser les plaques (11 , 12, 20) en au moins l'un des matériaux suivants : aluminium, cuivre, alliage à base d'aluminium, alliage à base de cuivre.10. Method according to one of claims 1 to 9, characterized in that it consists in producing the plates (11, 12, 20) in at least one of the following materials: aluminum, copper, alloy based on aluminum, copper-based alloy.
11. Procédé selon l'une des revendications 1 à 10, caractérisé par le fait qu'il consiste à écarter l'une de l'autre les deux plaques supérieure et inférieure (11 , 12) en leur appliquant la seconde force, jusqu'à ce que les parois de séparation (28, 29) entre les orifices (25, 26, 27) forment avec les deux plaques supérieure et inférieure (11 , 12) un angle sensiblement égal à quatre-vingt-dix degrés.11. Method according to one of claims 1 to 10, characterized in that it consists in separating from each other the two upper and lower plates (11, 12) by applying the second force, until the partition walls (28, 29) between the orifices (25, 26, 27) form with the two upper and lower plates (11, 12) an angle substantially equal to ninety degrees.
12. Procédé selon l'une des revendications 1 à 11 , caractérisé par le fait qu'il comporte une sixième étape (F) qui consiste à réaliser plusieurs nappes au contact les unes des autres et à enfermer la pluralité de nappes (2, 3, 4) dans un boîtier (70) comportant des parois (70-1 , 70-2, 70-3, 70-4) obturant partiellement au moins l'un des côtés des dites nappes, étant en outre définies, dans les parois du boîtier, des entrées et des sorties (5en, 5SO, 6Θn, 6S0) pour chaque nappe (2, 3, 4) de circulation fluidique (5, 6). 12. Method according to one of claims 1 to 11, characterized in that it comprises a sixth step (F) which consists of making several sheets in contact with each other and to enclose the plurality of layers (2, 3 , 4) in a housing (70) having walls (70-1, 70-2, 70-3, 70-4) partially closing at least one side of said plies, being further defined in the walls of the housing, inlets and outlets (5 in , 5 SO , 6 Θ n, 6 S0 ) for each fluid flow sheet (2, 3, 4) (5, 6).
13. Procédé selon la revendication 12, caractérisé par le fait que les plaques intercalaires (20) sont agencées les unes par rapport aux autres de façon que, lorsque les plaques inférieures et supérieures (11 , 12) limitant deux nappes consécutives sont écartées les unes des autres, les parois de séparation (28, 29) entre les orifices (25, 26, 27) d'une nappe sont respectivement situées dans le même plan que les parois de séparation (28, 29) entre les orifices (25, 26, 27) de l'autre nappe.13. The method of claim 12, characterized in that the spacer plates (20) are arranged relative to each other so that when the lower and upper plates (11, 12) limiting two consecutive sheets are spaced apart others, the partition walls (28, 29) between the orifices (25, 26, 27) of a sheet are respectively located in the same plane as the partition walls (28, 29) between the orifices (25, 26). 27) of the other tablecloth.
14. Echangeur thermique (1), caractérisé par le fait qu'il est réalisé selon le procédé en accord avec au moins l'une des revendications 1 à 13. 14. Heat exchanger (1), characterized in that it is carried out according to the method in accordance with at least one of claims 1 to 13.
PCT/FR2008/000237 2007-02-23 2008-02-22 Method of making a heat exchanger and heat exchanger obtained according to this method WO2008125755A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08775591A EP2122288A2 (en) 2007-02-23 2008-02-22 Method of making a heat exchanger and heat exchanger obtained according to this method
JP2009550306A JP2010519494A (en) 2007-02-23 2008-02-22 Heat exchanger and manufacturing method thereof
CN2008800049631A CN101611286B (en) 2007-02-23 2008-02-22 Method of making a heat exchanger and heat exchanger obtained according to this method
US12/528,236 US20100319891A1 (en) 2007-02-23 2008-02-22 Method of making a heat exchanger and heat exchanger obtained according to this method
CA002678138A CA2678138A1 (en) 2007-02-23 2008-02-22 Method of making a heat exchanger and heat exchanger obtained according to this method
HK10103582.6A HK1135172A1 (en) 2007-02-23 2010-04-13 Method of making a heat exchanger and heat exchanger obtained according to this method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0701295A FR2913107B1 (en) 2007-02-23 2007-02-23 METHOD FOR PRODUCING A THERMAL EXCHANGER AND THERMAL EXCHANGER OBTAINED ACCORDING TO THIS METHOD
FR0701295 2007-02-23

Publications (3)

Publication Number Publication Date
WO2008125755A2 true WO2008125755A2 (en) 2008-10-23
WO2008125755A3 WO2008125755A3 (en) 2008-12-11
WO2008125755A8 WO2008125755A8 (en) 2009-09-03

Family

ID=38461189

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2008/000237 WO2008125755A2 (en) 2007-02-23 2008-02-22 Method of making a heat exchanger and heat exchanger obtained according to this method

Country Status (8)

Country Link
US (1) US20100319891A1 (en)
EP (1) EP2122288A2 (en)
JP (1) JP2010519494A (en)
CN (1) CN101611286B (en)
CA (1) CA2678138A1 (en)
FR (1) FR2913107B1 (en)
HK (1) HK1135172A1 (en)
WO (1) WO2008125755A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011069015A2 (en) * 2009-12-02 2011-06-09 The Regents Of The University Of Colorado, A Body Corporate Microchannel expanded heat exchanger

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103732035B (en) * 2012-10-15 2018-03-13 华为技术有限公司 A kind of rack of heat exchanger plates, heat exchanger and communication base station
PT2730878T (en) * 2012-11-07 2019-05-30 Alfa Laval Corp Ab Plate package and method of making a plate package
EP3312541B1 (en) * 2016-10-21 2020-09-09 HS Marston Aerospace Limited Method and system for manufacturing laminated heat exchangers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924793A (en) * 1973-07-24 1975-12-09 British Aircraft Corp Ltd Forming metals
FR2502042A1 (en) * 1981-03-23 1982-09-24 Rockwell International Corp PROCESS FOR PRODUCING ARMORED METALLIC STRUCTURES OF FILAMENTS
US4393987A (en) * 1981-09-30 1983-07-19 The Boeing Company Superplastically formed structure and method of making
EP0108707A2 (en) * 1982-11-01 1984-05-16 Mitsubishi Jukogyo Kabushiki Kaisha An apparatus for forming fins for heat exchangers
US5287918A (en) * 1990-06-06 1994-02-22 Rolls-Royce Plc Heat exchangers
WO2003053608A1 (en) * 2001-12-21 2003-07-03 Joseph Kieffer Method for making a three-dimensional metal structure
US20060070728A1 (en) * 2002-12-02 2006-04-06 Lg Electronics Inc. Heat exchanger of ventilating system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6983788B2 (en) * 1998-11-09 2006-01-10 Building Performance Equipment, Inc. Ventilating system, heat exchanger and methods
CN2771786Y (en) * 2004-04-28 2006-04-12 郑玉琢 Air heat-exchanger
JP2007315649A (en) * 2006-05-24 2007-12-06 Mitsubishi Electric Corp Total enthalpy heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924793A (en) * 1973-07-24 1975-12-09 British Aircraft Corp Ltd Forming metals
FR2502042A1 (en) * 1981-03-23 1982-09-24 Rockwell International Corp PROCESS FOR PRODUCING ARMORED METALLIC STRUCTURES OF FILAMENTS
US4393987A (en) * 1981-09-30 1983-07-19 The Boeing Company Superplastically formed structure and method of making
EP0108707A2 (en) * 1982-11-01 1984-05-16 Mitsubishi Jukogyo Kabushiki Kaisha An apparatus for forming fins for heat exchangers
US5287918A (en) * 1990-06-06 1994-02-22 Rolls-Royce Plc Heat exchangers
WO2003053608A1 (en) * 2001-12-21 2003-07-03 Joseph Kieffer Method for making a three-dimensional metal structure
US20060070728A1 (en) * 2002-12-02 2006-04-06 Lg Electronics Inc. Heat exchanger of ventilating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011069015A2 (en) * 2009-12-02 2011-06-09 The Regents Of The University Of Colorado, A Body Corporate Microchannel expanded heat exchanger
WO2011069015A3 (en) * 2009-12-02 2011-10-13 The Regents Of The University Of Colorado, A Body Corporate Microchannel expanded heat exchanger

Also Published As

Publication number Publication date
FR2913107B1 (en) 2009-05-08
CN101611286A (en) 2009-12-23
FR2913107A1 (en) 2008-08-29
CN101611286B (en) 2011-03-09
US20100319891A1 (en) 2010-12-23
HK1135172A1 (en) 2010-05-28
JP2010519494A (en) 2010-06-03
WO2008125755A8 (en) 2009-09-03
WO2008125755A3 (en) 2008-12-11
CA2678138A1 (en) 2008-10-23
EP2122288A2 (en) 2009-11-25

Similar Documents

Publication Publication Date Title
EP3175181B1 (en) Improved enthalpy exchanger
EP0045257B1 (en) Plate-like heat exchanger with rigid structure
EP1709380A1 (en) Heat exchanger and a corresponding exchange module
FR2803378A1 (en) HEAT EXCHANGER WITH MULTI-CHANNEL TUBES, ESPECIALLY FOR A MOTOR VEHICLE
EP0186592A1 (en) Plate heat exchanger
WO2008125755A2 (en) Method of making a heat exchanger and heat exchanger obtained according to this method
EP2912396B1 (en) Heat exchanger, particularly for a motor vehicle
EP2691722B1 (en) Heat exchanger tube, and corresponding heat exchanger production method
EP1533585B1 (en) Stacked plate heat exchanger
FR2793016A1 (en) EXTENDED COLLECTOR BOX FOR HEAT EXCHANGER RESISTANT TO HIGH INTERNAL PRESSURES
EP1770346B1 (en) Heat exchanger with alternated flat tubes
EP2723558A1 (en) Core of sheet structural material and assembly process
EP1579162B1 (en) Heat exchanger module and method of producing
WO2006035149A1 (en) Heat exchange insert for a heat exchange device
EP3645184A1 (en) Tube for a heat exchanger having disturbance device
FR2972130A1 (en) METAL SHEET FOR THERMAL HEAT EXCHANGER, DOUBLE FLOW, FLUID HEAT EXCHANGER, DOUBLE FLOW, AND METHODS OF MANUFACTURE
WO2020069880A1 (en) Plate for a plate heat exchanger
FR2890731A1 (en) Motor vehicle heat exchanger has flat primary fins with tubes passing through them and corrugated secondary fins between flat ones
WO2008132329A2 (en) Fluid circulation mat, method for making such a mat and thermal exchanger including such a mat
EP3308096B1 (en) Heat exchanger for motor vehicle
FR2913766A1 (en) FLUID CIRCULATION TABLE, METHOD FOR MAKING SUCH A TABLET AND USE OF SUCH PANELS FOR PRODUCING A HEAT EXCHANGER
EP2384986A1 (en) Verfahren zum Erhalten einer Pappmater, die zu einer Schachtel gefaltet werden soll
EP2138415B1 (en) Safety envelope
WO2004102103A2 (en) Heat exchanger which is intended, in particular, for a motor vehicle
FR2986314A1 (en) THERMAL EXCHANGER TUBE, HEAT EXCHANGER AND CORRESPONDING OBTAINING METHOD

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880004963.1

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08775591

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2008775591

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2009550306

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 2678138

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 12528236

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE