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EP0685699A1 - Heat exchanger for processing a fluid - Google Patents

Heat exchanger for processing a fluid Download PDF

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Publication number
EP0685699A1
EP0685699A1 EP95108060A EP95108060A EP0685699A1 EP 0685699 A1 EP0685699 A1 EP 0685699A1 EP 95108060 A EP95108060 A EP 95108060A EP 95108060 A EP95108060 A EP 95108060A EP 0685699 A1 EP0685699 A1 EP 0685699A1
Authority
EP
European Patent Office
Prior art keywords
fluid
heat exchanger
pairs
bars
plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95108060A
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German (de)
French (fr)
Other versions
EP0685699B1 (en
Inventor
Gilles Caumel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0685699A1 publication Critical patent/EP0685699A1/en
Application granted granted Critical
Publication of EP0685699B1 publication Critical patent/EP0685699B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—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

Definitions

  • the invention relates to a heat exchanger for the treatment of a fluid, in particular for the cooling of a high temperature air flow coming from the turbo compressor of an industrial vehicle.
  • Heat exchangers are already known which comprise two fluid boxes, a multiplicity of intermediate bars arranged in pairs, as well as a multiplicity of plates arranged in pairs to frame said pairs of bars and form, in collaboration with them, circulation chambers of the fluid.
  • the object of the invention is in particular to remedy this drawback.
  • each box fluid comprises a manifold plate provided with openings adapted to receive end portions of the pairs of bars, and openings adapted to allow the free circulation of the fluid between the chambers and the fluid boxes.
  • the ends of the pairs of plates are folded back and fixed against the collector plates so that two facing plates, belonging respectively to two consecutive chambers, have their ends turned towards one another, thus forming conduits in which can circulate an air flow to be treated.
  • the heat exchanger thus formed no longer requires the use of transverse bars which are advantageously replaced by the openings made in the collector plates.
  • the full space between two openings then serves as a separation interlayer between two chambers, thus directly creating air circulation ducts.
  • conduits will also be made more rigid by placing the ends of the plates belonging to two consecutive chambers in head-to-tail position.
  • the folded ends of the pairs of plates are advantageously turned towards one another.
  • each bar comprises a substantially linear central part, which extends parallel to the longitudinal edge of the plates and extended on either side by a bent part to allow the embedding of said bar in an opening, each bent part being extended by an end part housed in a fluid box.
  • each pair of bars is embedded in the same opening which serves to both housing for bars and fluid circulation mouth.
  • the end parts of the pairs of bars are folded back on themselves by forming an arc of a circle, so that these end parts are in contact to block said bars against the ends of the opening in which they are housed.
  • each bar of a pair of bars is embedded in an opening of the same section as said bar, forming a housing.
  • Each housing is positioned substantially symmetrically on either side of a central opening forming a mouth for circulation of the fluid.
  • each bar is immobilized independently.
  • the collector plates comprise fixing lugs for holding the folded ends belonging respectively to a first and a last chamber.
  • the conduits comprise first spacers forming fins, to increase the heat exchange surface.
  • conduits advantageously constituted by plates, the ends of which are head to tail, provide effective protection for these fragile fins, and in particular during the assembly step.
  • the external faces of a first and of a last plate are capable of receiving second spacers forming fins.
  • the invention provides that these second spacers have a height substantially double that of the first spacers, which significantly increases the heat exchange surface.
  • the exchanger comprises at least one end cheek capable of protecting a second interlayer and integral with the two fluid boxes.
  • Figure 1 shows schematically a part of an exchanger of the type known as bars and plates which comprises pairs of bars framed by two plates 2a and 2b.
  • the plate 2a is the so-called lower plate, the plate 2b being the so-called upper plate.
  • Each bar 1 defines a level, level 1 corresponding to the first bar and level n to the last bar.
  • each level 1 corresponds to two bars 1a and 1b forming a pair of bars.
  • Each pair thus forms, in collaboration with the pair of plates 2a and 2b which surround it, a chamber 3 in which a refrigerant fluid coming from a fluid box 4 can circulate.
  • This cooling fluid may for example be the cooling water of a supercharged engine of an industrial vehicle.
  • Each plate 2 comprises an end portion 5 curved so that it forms a right angle with the main part of the plate.
  • each lower plate 2a has an end portion 5a bent downward
  • each upper plate 2b has an end portion 5b bent upward.
  • This arrangement advantageously makes it possible to produce, between two consecutive chambers 3, a free space forming a conduit 6 in which the fluid to be treated can flow.
  • This fluid is for example an air flow coming from a turbocharger of an industrial vehicle. Its temperature can be notably higher than 100 ° C., which requires efficient cooling, such as that produced by the exchanger according to the invention.
  • To increase the heat exchange surface between the air flow 15 to be treated and the cooling fluid there are housed, inside the conduits 6, first spacers 7 forming dissipation fins.
  • the two end parts 5 of the plates are substantially in contact with a collecting plate 8 serving as a cover for a fluid box 4.
  • each manifold plate 8 comprises openings 9 of substantially parallel-piped shape and parallel to each other.
  • Each of these openings 9 is capable of forming a housing for receiving the ends C of a pair of bars and / or forming a mouth to allow the free circulation of the coolant. between a chamber 3 and a fluid box 4 opposite which it is located.
  • the openings 9 extend parallel to one of the sides of the collecting plate 8, which is parallel to the plane of the chambers 3.
  • the length of an opening 9 can only be less than the distance which separates two bars 1a and 1b of the same pair.
  • each bar comprises a substantially linear central part A, which extends parallel to the longitudinal edge of the plates 2, and extended on either side by a bent part B, itself extended by a terminal part C.
  • Each bar can thus be embedded thanks to its bent part B in an opening 9, the terminal part C then being housed in the fluid box 4.
  • an opening 9a is made to correspond to a chamber 3.
  • Each opening 9a is able both to receive the ends C of a pair of bars, and to allow the free circulation of the refrigerant.
  • the height of the opening 9a is substantially equal (by lower value) to the distance which separates two plates 2a and 2b from the same chamber 3 and its length is substantially equal (by higher value) to the distance which separates the outer edges of the bent parts C of a pair of bars.
  • each end part C of the same pair of bars is folded back on itself by forming an arc of a circle oriented towards the center of the opening 9a.
  • the radius of curvature of the terminal parts C is chosen so that two terminal parts C of one same pair of bars are in contact at an end portion 13 and repel each other. Under these conditions, each bar 1 is blocked by stress against the ends of the opening 9a in which it is embedded.
  • FIG. 3 According to a second embodiment of the invention (FIG. 3), three openings 9b and 9c are grouped into a chamber 3 grouped into two categories according to their use.
  • the length of these openings 9b is substantially less than the space which separates the internal edges of the two bent parts C of a pair of bars, their height being substantially equal (by lower value) to the space between two plates 2a and 2b in the same room 3.
  • a second category of openings 9c forming a housing, is capable of receiving a bar 1 and only one. Its section is therefore identical to that of the bar 1 (by a substantially greater value).
  • Each opening 9c forming a housing for a bar is positioned substantially symmetrically on either side of the opening 9b forming a mouth.
  • Each bar 1 of a pair is therefore blocked independently in an opening 9c.
  • the end parts C of the bars 1 are linear and only constitute a simple extension of the bent parts B.
  • the chambers are stacked, before brazing, by means of the fixing of two fixing lugs 10a and 10b, respectively below the location provided for the terminal part 5a of the first plate 2a and above the location provided for the terminal part 5b of the last plate 2b.
  • second inserts are fixed under the first plate 5a and on the last plate 5b, forming fins.
  • a plate called "end cheek" 12 will be housed below the lower tab 11, and above the upper tab 11 .
  • These cheeks 12 will be fixed directly to the fluid boxes 4.
  • These cheeks may also include buttonholes to allow the exchanger to be fixed.
  • the exchanger is then brazed as described, either in a salt bath or in the oven.
  • the brazing process described by French patent 69 433 487 filed by the company CHAUSSON will preferably be implemented.
  • the shape of the terminal parts of the bars can be modified to facilitate the circulation of the fluid.

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

Abstract

The heat exchanger comprises two fluid boxes (4) and several pairs of inserted bars (1a,1b). Several plates (2a,2b) are located in pairs to frame the bars and form with them chambers (3) in which a fluid circulates. Each fluid box comprises a manifold plate (8) having openings (9a) able to receive the end parts (C) of the pairs of bars and enable the free circulation of fluid between the chambers and the fluid boxes. Each bar has a central part (A) extending parallel to the plates' longitudinal edge which are extended by an angled part (B) allowing encasting in a manifold plate opening. The ends (5) of the plate pairs are folded down and fixed against the manifold plates, so that two opposite plates have their ends (5,5a) turned towards each other to form conduits (6) in which the air to be cooled can flow. <IMAGE>

Description

L'invention concerne un échangeur de chaleur pour le traitement d'un fluide, notamment pour le refroidissement d'un flux d'air à haute température issu du turbo compresseur d'un véhicule industriel.The invention relates to a heat exchanger for the treatment of a fluid, in particular for the cooling of a high temperature air flow coming from the turbo compressor of an industrial vehicle.

On connaît déjà des échangeurs de chaleur qui comprennent deux boîtes à fluide, une multiplicité de barrettes intercalaires disposées par paires, ainsi qu'une multiplicité de plaques disposées par paires pour encadrer lesdites paires de barrettes et former en collaboration avec elles des chambres de circulation du fluide.Heat exchangers are already known which comprise two fluid boxes, a multiplicity of intermediate bars arranged in pairs, as well as a multiplicity of plates arranged in pairs to frame said pairs of bars and form, in collaboration with them, circulation chambers of the fluid.

Un échangeur de ce type est connu notamment d'après le brevet français No 80 06704 publié sous le No. 2 479 438, lequel comprend des paires de barrettes longitudinales et transversales, chaque paire de barrettes longitudinales étant encadrée à ses extrémités par deux paires de barrettes transversales, positionnées perpendiculairement à celles-ci.An exchanger of this type is known in particular from French patent No 80 06704 published under No. 2,479,438, which comprises pairs of longitudinal and transverse bars, each pair of longitudinal bars being framed at its ends by two pairs of transverse bars, positioned perpendicular to them.

Dans cet échangeur de type connu, les barrettes longitudinales collaborent avec les plaques pour former des chambres de circulation du fluide, alors que les barrettes transversales servent à la fois d'intercalaires entre deux chambres successives, et de bouches de circulation du fluide entre les boîtes à fluide et la chambre qu'elles encadrent.In this known type of exchanger, the longitudinal bars collaborate with the plates to form fluid circulation chambers, while the transverse bars serve both as spacers between two successive chambers, and as fluid circulation vents between the boxes fluid and the room they frame.

L'inconvénient majeur de ce tue d'échangeur réside dans la complexité de l'assemblage des différents éléments qui le constituent.The major drawback of this exchanger killer lies in the complexity of the assembly of the various elements which constitute it.

En effet, afin de rendre rigide cet empilement de plaques et barrettes, on est obligé de visser chaque barrette longitudinale sur des cadres métalliques latéraux. On effectue ensuite un brasage des éléments entre eux, puis on visse chaque barrette transversale sur les boîtes à fluide.Indeed, in order to make this stack of plates and bars rigid, it is necessary to screw each longitudinal bar onto lateral metal frames. The elements are then brazed together, then each transverse bar is screwed onto the fluid boxes.

L'invention a notamment pour but de remédier à cet inconvénient.The object of the invention is in particular to remedy this drawback.

Elle propose à cet effet un échangeur de chaleur du type défini précédemment dans lequel, selon l'invention, chaque boîte à fluide comprend une plaque collectrice munie d'ouvertures aptes à recevoir des parties terminales des paires de barrettes, et d'ouvertures aptes à autoriser la libre circulation du fluide entre les chambres et les boîtes à fluide.To this end, it offers a heat exchanger of the type defined above in which, according to the invention, each box fluid comprises a manifold plate provided with openings adapted to receive end portions of the pairs of bars, and openings adapted to allow the free circulation of the fluid between the chambers and the fluid boxes.

Par ailleurs, les extrémités des paires de plaques sont repliées et fixées contre les plaques collectrices de telle sorte que deux plaques en regard, appartenant respectivement à deux chambres consécutives, ont leurs extrémités tournées l'une vers l'autre, formant ainsi des conduits dans lesquels peut circuler un flux d'air à traiter.Furthermore, the ends of the pairs of plates are folded back and fixed against the collector plates so that two facing plates, belonging respectively to two consecutive chambers, have their ends turned towards one another, thus forming conduits in which can circulate an air flow to be treated.

L'échangeur ainsi constitué ne nécessite plus l'utilisation de barrettes transversales qui sont avantageusement remplacées par les ouvertures pratiquées dans les plaques collectrices. L'espace plein entre deux ouvertures sert alors d'intercalaire de séparation entre deux chambres, créant ainsi directement des conduits de circulation d'air.The heat exchanger thus formed no longer requires the use of transverse bars which are advantageously replaced by the openings made in the collector plates. The full space between two openings then serves as a separation interlayer between two chambers, thus directly creating air circulation ducts.

Ces conduits seront par ailleurs rendus plus rigides par la mise en position tête-bêche des extrémités des plaques appartenant à deux chambres consécutives.These conduits will also be made more rigid by placing the ends of the plates belonging to two consecutive chambers in head-to-tail position.

Les extrémités repliées des paires de plaques sont avantageusement tournées l'une vers l'autre.The folded ends of the pairs of plates are advantageously turned towards one another.

La longueur des ouvertures est notablement inférieure à la largeur d'une plaque collectrice. En conséquence, des barrettes sensiblement linéaires ne pourraient pas se loger dans de telles ouvertures, puisqu'elles ne se trouveraient pas en regard de celles-ci. C'est pourquoi selon une autre caractéristique de l'invention, chaque barrette comprend une partie centrale sensiblement linéaire, qui s'étend parallèlement au bord longitudinal des plaques et prolongée de part et d'autre par une partie coudée pour autoriser l'encastrement de ladite barrette dans une ouverture, chaque partie coudée étant prolongée par une partie terminale logée dans une boîte à fluide.The length of the openings is significantly less than the width of a header plate. Consequently, substantially linear bars could not be housed in such openings, since they would not be opposite them. This is why, according to another characteristic of the invention, each bar comprises a substantially linear central part, which extends parallel to the longitudinal edge of the plates and extended on either side by a bent part to allow the embedding of said bar in an opening, each bent part being extended by an end part housed in a fluid box.

Dans une première forme de réalisation, chaque paire de barrettes est encastrée dans une même ouverture qui sert à la fois de logement pour barrettes et de bouche de circulation du fluide.In a first embodiment, each pair of bars is embedded in the same opening which serves to both housing for bars and fluid circulation mouth.

Dans cette forme de réalisation, les parties terminales des paires de barrettes sont repliées sur elles-mêmes en formant un arc de cercle, de telle sorte que ces parties terminales soient en contact pour bloquer lesdites barrettes contre les extrémités de l'ouverture dans laquelle elles sont logées.In this embodiment, the end parts of the pairs of bars are folded back on themselves by forming an arc of a circle, so that these end parts are in contact to block said bars against the ends of the opening in which they are housed.

Chaque barrette de la paire ainsi constituée se trouve bloquée transversalement dans l'ouverture puisque les parties terminales de la paire de barrette se repoussent mutuellement par effet de contrainte.Each bar of the pair thus formed is blocked transversely in the opening since the end parts of the pair of bars repel each other by constraint effect.

Dans une seconde forme de réalisation, chaque barrette d'une paire de barrettes est encastrée dans une ouverture de même section que ladite barrette, formant logement. Chaque logement est positionné sensiblement symétriquement de part et d'autre d'une ouverture centrale formant bouche de circulation du fluide.In a second embodiment, each bar of a pair of bars is embedded in an opening of the same section as said bar, forming a housing. Each housing is positioned substantially symmetrically on either side of a central opening forming a mouth for circulation of the fluid.

Dans cette forme de réalisation, chaque barrette est immobilisée de façon indépendante.In this embodiment, each bar is immobilized independently.

Selon encore une autre caractéristique de l'invention, les plaques collectrices comprennent des pattes de fixation pour maintenir les extrémités repliées appartenant respectivement à une première et une dernière chambre.According to yet another characteristic of the invention, the collector plates comprise fixing lugs for holding the folded ends belonging respectively to a first and a last chamber.

Ces pattes de fixation autorisent ainsi l'assemblage et l'empilement des chambres successives avant l'introduction de l'échangeur dans un four de brasage.These fixing lugs thus allow the assembly and stacking of the successive chambers before the introduction of the exchanger into a brazing furnace.

Selon une autre caractéristique de l'invention, les conduits comprennent de premiers intercalaires formant ailettes, pour augmenter la surface d'échange thermique.According to another characteristic of the invention, the conduits comprise first spacers forming fins, to increase the heat exchange surface.

Les conduits avantageusement constitués par des plaques, dont les extrémités sont tête-bêche, assurent une protection efficace pour ces fragiles ailettes, et notamment lors de l'étape d'assemblage.The conduits advantageously constituted by plates, the ends of which are head to tail, provide effective protection for these fragile fins, and in particular during the assembly step.

Selon encore une autre caractéristique de l'invention, les faces externes d'une première et d'une dernière plaque sont aptes à recevoir de seconds intercalaires formant ailettes.According to yet another characteristic of the invention, the external faces of a first and of a last plate are capable of receiving second spacers forming fins.

Avantageusement, l'invention prévoit que ces seconds intercalaires aient une hauteur sensiblement double de celle des premiers intercalaires, ce qui augmente notablement la surface d'échange thermique.Advantageously, the invention provides that these second spacers have a height substantially double that of the first spacers, which significantly increases the heat exchange surface.

Selon une dernière caractéristique de l'invention, l'échangeur comprend au moins une joue d'extrémité apte à protéger un second intercalaire et solidaire des deux boîtes à fluide.According to a last characteristic of the invention, the exchanger comprises at least one end cheek capable of protecting a second interlayer and integral with the two fluid boxes.

Dans la description qui suit, faite seulement à titre d'exemple, on se réfère aux dessins annexés, sur lesquels :

  • la figure 1 est une vue schématique latérale d'une partie de l'échangeur selon l'invention;
  • la figure 2 est une perspective éclatée et en partie trachée d'une partie de l'échangeur conformément à une première forme de réalisation de l'invention; et
  • la figure 3 est une perspective éclatée et en partie trachée d'une partie de l'échangeur conformément à une seconde forme de réalisation de l'invention.
In the description which follows, given solely by way of example, reference is made to the appended drawings, in which:
  • Figure 1 is a schematic side view of a part of the exchanger according to the invention;
  • FIG. 2 is an exploded perspective view, partly broken away, of a part of the exchanger according to a first embodiment of the invention; and
  • Figure 3 is an exploded perspective and partially trachea part of the exchanger according to a second embodiment of the invention.

La figure 1 schématise une partie d'un échangeur du type dit à barrettes et à plaques qui comporte des paires de barrettes encadrées par deux plaques 2a et 2b. La plaque 2a est la plaque dite inférieure, la plaque 2b étant la plaque dite supérieure. Chaque barrette 1 définit un niveau, le niveau 1 correspondant à la première barrette et le niveau n à la dernière barrette.Figure 1 shows schematically a part of an exchanger of the type known as bars and plates which comprises pairs of bars framed by two plates 2a and 2b. The plate 2a is the so-called lower plate, the plate 2b being the so-called upper plate. Each bar 1 defines a level, level 1 corresponding to the first bar and level n to the last bar.

Comme cela est schématisé sur la figure 2, à chaque niveau 1 correspondent deux barrettes la et lb formant paire de barrettes. Chaque paire forme ainsi en collaboration avec la paire de plaques 2a et 2b qui l'encadre, une chambre 3 dans laquelle peut circuler un fluide réfrigérant issu d'une boîte à fluide 4.As shown diagrammatically in FIG. 2, each level 1 corresponds to two bars 1a and 1b forming a pair of bars. Each pair thus forms, in collaboration with the pair of plates 2a and 2b which surround it, a chamber 3 in which a refrigerant fluid coming from a fluid box 4 can circulate.

Ce fluide de refroidissement pourra être par exemple l'eau de refroidissement d'un moteur suralimenté de véhicule industriel.This cooling fluid may for example be the cooling water of a supercharged engine of an industrial vehicle.

Chaque plaque 2 comprend une partie terminale 5 recourbée de telle sorte qu'elle forme un angle droit avec la partie principale de la plaque. Ainsi, chaque plaque inférieure 2a possède une partie terminale 5a recourbée vers le bas, et chaque plaque supérieure 2b possède une partie terminale 5b recourbée vers le haut.Each plate 2 comprises an end portion 5 curved so that it forms a right angle with the main part of the plate. Thus, each lower plate 2a has an end portion 5a bent downward, and each upper plate 2b has an end portion 5b bent upward.

Les plaques 2b et 2a, en regard l'une de l'autre et appartenant à deux chambres consécutives, ont ainsi leurs parties terminales respectives 5b et 5a positionnées tête-bêche, et s'appuyant l'une sur l'autre.The plates 2b and 2a, facing one another and belonging to two consecutive chambers, thus have their respective end portions 5b and 5a positioned head to tail, and bearing on one another.

Cette disposition permet avantageusement de réaliser entre deux chambres 3 consécutives un espace libre formant conduit 6 dans lequel pourra circuler le fluide à traiter.This arrangement advantageously makes it possible to produce, between two consecutive chambers 3, a free space forming a conduit 6 in which the fluid to be treated can flow.

Ce fluide est par exemple un flux d'air issu d'un turbocompresseur de véhicule industriel. Sa température peut être notablement supérieure à 100'C, ce qui nécessite un refroidissement efficace, tel que celui réalisé par l'échangeur selon l'invention. Pour augmenter la surface d'échange thermique entre le flux 15 d'air à traiter et le fluide de refroidissement, on loge, à l'intérieur des conduits 6, de premiers intercalaires 7 formant ailettes de dissipation.This fluid is for example an air flow coming from a turbocharger of an industrial vehicle. Its temperature can be notably higher than 100 ° C., which requires efficient cooling, such as that produced by the exchanger according to the invention. To increase the heat exchange surface between the air flow 15 to be treated and the cooling fluid, there are housed, inside the conduits 6, first spacers 7 forming dissipation fins.

Les deux parties terminales 5 des plaques sont sensiblement en contact avec une plaque collectrice 8 servant de couvercle à une boîte à fluide 4.The two end parts 5 of the plates are substantially in contact with a collecting plate 8 serving as a cover for a fluid box 4.

Comme indiqué figures 2 et 3, chaque plaque collectrice 8 comprend des ouvertures 9 de forme sensiblement parallèle-pipédique et parallèles entre elles.As shown in Figures 2 and 3, each manifold plate 8 comprises openings 9 of substantially parallel-piped shape and parallel to each other.

Chacune de ces ouvertures 9 est apte à former logement pour recevoir les extrémités C d'une paire de barrettes et/ou former bouche pour autoriser la libre circulation du fluide réfrigérant entre une chambre 3 et une boîte à fluide 4 en regard de laquelle elle se trouve.Each of these openings 9 is capable of forming a housing for receiving the ends C of a pair of bars and / or forming a mouth to allow the free circulation of the coolant. between a chamber 3 and a fluid box 4 opposite which it is located.

A cet effet, les ouvertures 9 s'étendent parallèlement à l'un des côtés de la plaque collectrice 8, lequel est parallèle au plan des chambres 3.To this end, the openings 9 extend parallel to one of the sides of the collecting plate 8, which is parallel to the plane of the chambers 3.

Pour des raisons évidentes, la longueur d'une ouverture 9 ne peut être qu'inférieure à la distance qui sépare deux barrettes la et lb d'une même paire.For obvious reasons, the length of an opening 9 can only be less than the distance which separates two bars 1a and 1b of the same pair.

En conséquence, chaque barrette comprend une partie centrale A sensiblement linéaire, qui s'étend parallèlement au bord longitudinal des plaques 2, et prolongé de part et d'autre par une partie coudée B, elle-même prolongée par une partie terminale C.Consequently, each bar comprises a substantially linear central part A, which extends parallel to the longitudinal edge of the plates 2, and extended on either side by a bent part B, itself extended by a terminal part C.

Chaque barrette peut ainsi être encastrée grâce à sa partie coudée B dans une ouverture 9, la partie terminale C étantalors logée dans la boîte à fluide 4.Each bar can thus be embedded thanks to its bent part B in an opening 9, the terminal part C then being housed in the fluid box 4.

Selon une première forme de réalisation de l'invention (figure 2), on fait correspondre une ouverture 9a à une chambre 3.According to a first embodiment of the invention (FIG. 2), an opening 9a is made to correspond to a chamber 3.

Il y aura donc autant d'ouvertures 9a que de niveaux.There will therefore be as many openings 9a as there are levels.

Chaque ouverture 9a est apte à la fois à recevoir les extrémités C d'une paire de barrettes, et à autoriser la libre circulation du fluide réfrigérant.Each opening 9a is able both to receive the ends C of a pair of bars, and to allow the free circulation of the refrigerant.

En conséquence, la hauteur de l'ouverture 9a est sensiblement égale (par valeur inférieure) à la distance qui sépare deux plaques 2a et 2b d'une même chambre 3 et sa longueur est sensiblement égale (par valeur supérieure) à la distance qui sépare les bords externes des parties coudées C d'une paire de barrettes.Consequently, the height of the opening 9a is substantially equal (by lower value) to the distance which separates two plates 2a and 2b from the same chamber 3 and its length is substantially equal (by higher value) to the distance which separates the outer edges of the bent parts C of a pair of bars.

Dans cette première forme de réalisation, chaque partie terminale C d'une même paire de barrettes est repliée sur elle-même en formant un arc de cercle orienté vers le centre de l'ouverture 9a. Le rayon de courbure des parties terminales C est choisi de telle sorte que deux parties terminales C d'une même paire de barrettes soient en contact en une partie terminale 13 et se repoussent mutuellement. Dans ces conditions, chaque barrette 1 se trouve bloquée par contrainte contre les extrémités de l'ouverture 9a dans laquelle elle est encastrée.In this first embodiment, each end part C of the same pair of bars is folded back on itself by forming an arc of a circle oriented towards the center of the opening 9a. The radius of curvature of the terminal parts C is chosen so that two terminal parts C of one same pair of bars are in contact at an end portion 13 and repel each other. Under these conditions, each bar 1 is blocked by stress against the ends of the opening 9a in which it is embedded.

Selon une seconde forme de réalisation de l'invention (figure 3), on fait correspondre à une chambre 3 trois ouvertures 9b et 9c regroupées en deux catégories selon leur usage.According to a second embodiment of the invention (FIG. 3), three openings 9b and 9c are grouped into a chamber 3 grouped into two categories according to their use.

Il y aura donc trois fois plus d'ouvertures que de niveaux.There will therefore be three times more openings than levels.

Une première catégorie d'ouvertures 9b, forme bouche pour autoriser la libre circulation du fluide entre la boîte à fluide 4 et la chambre 3 en regard de laquelle elle se trouve. La longueur de ces ouvertures 9b est sensiblement inférieure à l'espace qui sépare les bords internes des deux parties coudées C d'une paire de barrettes, leur hauteur étant sensiblement égale (par valeur inférieure) à l'espace entre deux plaques 2a et 2b d'une même chambre 3.A first category of openings 9b, mouth shape to allow the free circulation of the fluid between the fluid box 4 and the chamber 3 opposite which it is located. The length of these openings 9b is substantially less than the space which separates the internal edges of the two bent parts C of a pair of bars, their height being substantially equal (by lower value) to the space between two plates 2a and 2b in the same room 3.

Une seconde catégorie d'ouvertures 9c, formant logement, est apte à recevoir une barrette 1 et une seule. Sa section est donc identique à celle de la barrette 1 (par valeur sensiblement supérieure).A second category of openings 9c, forming a housing, is capable of receiving a bar 1 and only one. Its section is therefore identical to that of the bar 1 (by a substantially greater value).

Chaque ouverture 9c formant logement pour barrette est positionnée sensiblement symétriquement de part et d'autre de l'ouverture 9b formant bouche.Each opening 9c forming a housing for a bar is positioned substantially symmetrically on either side of the opening 9b forming a mouth.

Chaque barrette 1 d'une paire est donc bloquée de façon indépendante dans une ouverture 9c.Each bar 1 of a pair is therefore blocked independently in an opening 9c.

En conséquence, dans cette forme de réalisation, les parties terminales C des barrettes 1 sont linéaires et ne constituent qu'un simple prolongement des parties coudées B.Consequently, in this embodiment, the end parts C of the bars 1 are linear and only constitute a simple extension of the bent parts B.

L'empilement des chambres, avant brasage, est réalisé grâce à la fixation de deux pattes de fixation 10a et 10b, respectivement en dessous de l'emplacement prévu pour la partie terminale 5a de la première plaque 2a et au-dessus de l'emplacement prévu pour la partie terminale 5b de la dernière plaque 2b.The chambers are stacked, before brazing, by means of the fixing of two fixing lugs 10a and 10b, respectively below the location provided for the terminal part 5a of the first plate 2a and above the location provided for the terminal part 5b of the last plate 2b.

De la sorte, les parties terminales 5a et 5b des première et dernière plaques sont maintenues étroitement contre les plaques collectrices 8.In this way, the end parts 5a and 5b of the first and last plates are held tightly against the collector plates 8.

Enfin, pour accroître la surface d'échange thermique, on fixe sous la première plaque 5a et sur la dernière plaque 5b de seconds intercalaires il formant ailettes.Finally, to increase the heat exchange surface, second inserts are fixed under the first plate 5a and on the last plate 5b, forming fins.

Par ailleurs, afin de mieux protéger les seconds intercalaires 11 supérieur et inférieur, il pourra s'avérer utile, dans certaines conditions d'encombrement, de loger en dessous de l'intercalaire 11 inférieur, et au-dessus de l'intercalaire 11 supérieur, une plaque dite "joue d'extrémité" 12. Ces joues 12 seront fixées directement sur les boîtes à fluide 4. Ces joues pourront également comporter des boutonnières pour autoriser la fixation de l'échangeur.Furthermore, in order to better protect the second upper and lower tabs 11, it may prove useful, under certain conditions of space, to be housed below the lower tab 11, and above the upper tab 11 , a plate called "end cheek" 12. These cheeks 12 will be fixed directly to the fluid boxes 4. These cheeks may also include buttonholes to allow the exchanger to be fixed.

On procède alors au brasage de l'échangeur tel que décrit, soit au bain de sel, soit au four. Pour cela, on mettra en oeuvre de préférence le procédé de brasage décrit par le brevet français 69 433 487 déposé par la Société CHAUSSON.The exchanger is then brazed as described, either in a salt bath or in the oven. For this, the brazing process described by French patent 69 433 487 filed by the company CHAUSSON will preferably be implemented.

L'invention n'est pas limitée aux formes de réalisation représentées schématiquement et décrites en détail dans le présent descriptif. Diverses modifications peuvent y être apportées sans sortir du cadre des revendications.The invention is not limited to the embodiments shown diagrammatically and described in detail in the present description. Various modifications can be made without departing from the scope of the claims.

En particulier, la forme des parties terminales des barrettes pourra être modifiée pour faciliter la circulation du fluide.In particular, the shape of the terminal parts of the bars can be modified to facilitate the circulation of the fluid.

Claims (11)

Echangeur de chaleur, du type comprenant deux boîtes à fluide (4), une multiplicité de barrettes intercalaires (la, lb) disposées par paires, ainsi qu'une multiplicité de plaques (2a, 2b) disposées par paires pour encadrer les paires de barrettes (la, lb) et former en collaboration avec elles des chambres (3) dans lesquelles peut circuler un fluide, caractérisé en ce que chaque boîte à fluide (4) comprend une plaque collectrice (8) munie d'ouvertures (9a; 9c) aptes à recevoir des parties terminales (C) des paires de barrettes (la, lb) et d'ouvertures (9a; 9b) aptes à autoriser la libre circulation du fluide entre les chambres (3) et les boîtes à fluide (4), et en ce que les extrémités (5) des paires de plaques (2a, 2b) sont repliées et fixées contre les plaques collectrices (8), de telle sorte que deux plaques (2b et 2a) en regard, appartenant respectivement à deux chambres (3) consécutives, ont leurs extrémités (5b et 5a) tournées l'une vers l'autre, formant ainsi des conduits (6) dans lesquels peut circuler un flux d'air à traiter.Heat exchanger, of the type comprising two fluid boxes (4), a multiplicity of intermediate bars (la, lb) arranged in pairs, as well as a multiplicity of plates (2a, 2b) arranged in pairs to frame the pairs of bars (la, lb) and form in collaboration with them chambers (3) in which a fluid can circulate, characterized in that each fluid box (4) comprises a collecting plate (8) provided with openings (9a; 9c) suitable for receiving end portions (C) of pairs of bars (la, lb) and openings (9a; 9b) capable of authorizing the free circulation of the fluid between the chambers (3) and the fluid boxes (4), and in that the ends (5) of the pairs of plates (2a, 2b) are folded and fixed against the collector plates (8), so that two plates (2b and 2a) facing each other, belonging respectively to two chambers ( 3) consecutive, their ends (5b and 5a) facing one another, thus forming if conduits (6) in which a flow of air to be treated can circulate. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les extrémités repliées (5a, 5b) des paires de plaques sont tournées l'une vers l'autre.Heat exchanger according to claim 1, characterized in that the folded ends (5a, 5b) of the pairs of plates are turned towards one another. Echangeur de chaleur selon l'une des revendications 1 et 2, caractérisé en ce que chaque barrette (1) comprend une partie centrale (A) sensiblement linéaire qui s'étend parallèlement au bord longitudinal des plaques (2) et prolongée de part et d'autre par une partie coudée (B) pour autoriser l'encastrement de ladite barrette (1) dans une ouverture (9), chaque partie coudée (B) étant prolongée par ne partie terminale (C) logée dans une boîte à fluide (8).Heat exchanger according to either of Claims 1 and 2, characterized in that each strip (1) comprises a substantially linear central part (A) which extends parallel to the longitudinal edge of the plates (2) and extended on both sides. 'other by a bent part (B) to allow the embedding of said bar (1) in an opening (9), each bent part (B) being extended by a terminal part (C) housed in a fluid box (8 ). Echangeur de chaleur selon l'une des revendications 1 à 3, caractérisé en ce que chaque paire de barrettes (la, 1b) est encastrée dans une même ouverture (9a) qui sert à la fois de logement pour barrette et de bouche de circulation du fluide.Heat exchanger according to one of claims 1 to 3, characterized in that each pair of bars (la, 1b) is embedded in the same opening (9a) which serves both as housing for the bar and as a circulation mouth of the fluid. Echangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que les parties terminales (C) des paires de barrettes (la, lb) sont repliées sur elles-mêmes en formant un arc de cercle, de telle sorte que ces parties terminales (C) soient en contact pour bloquer lesdites barrettes (la et lb) contre les extrémités de l'ouverture (9a) dans laquelle elles sont encastrées.Heat exchanger according to one of claims 1 to 4, characterized in that the end portions (C) of the pairs of strips (la, lb) are folded back on themselves in an arc, so that these end parts (C) are in contact to block said bars (la and lb) against the ends of the opening (9a) in which they are embedded. Echangeur de chaleur selon l'une des revendications 1 à 3, caractérisé en ce que Chaque barrette (1) d'une paire de barrettes est encastrée dans une ouverture (9c) de même section que ladite barrette (1), formant logement, chaque logement étant positionné sensiblement symétriquement de part et d'autre d'une ouverture centrale (9b) formant bouche de circulation du fluide.Heat exchanger according to one of claims 1 to 3, characterized in that each bar (1) of a pair of bars is embedded in an opening (9c) of the same section as said bar (1), forming a housing, each housing being positioned substantially symmetrically on either side of a central opening (9b) forming a mouth for circulation of the fluid. Echangeur de chaleur selon l'une des revendications 1 à 3 et 6, caractérisé en ce que les parties terminales (C) des paires de barrettes sont sensiblement linéaires.Heat exchanger according to one of claims 1 to 3 and 6, characterized in that the end portions (C) of the pairs of strips are substantially linear. Echangeur de chaleur selon l'une des revendications précédentes, caractérisé en ce que les plaques collectrices (8) comprennent des pattes de fixation (10a, 10b) pour maintenir les extrémités repliées (5a, 5b) appartenant respectivement à une première et une dernière chambre (3).Heat exchanger according to one of the preceding claims, characterized in that the collector plates (8) comprise fixing lugs (10a, 10b) for holding the folded ends (5a, 5b) belonging respectively to a first and a last chamber (3). Echangeur de chaleur selon la revendication 1, caractérisé en ce que les conduits (6) comprennent de premiers intercalaires (7) formant ailettes, pour augmenter la surface l'échange thermique.Heat exchanger according to claim 1, characterized in that the conduits (6) comprise first spacers (7) forming fins, to increase the surface heat exchange. Echangeur de chaleur selon l'une des revendications 8 et caractérisé en ce que les faces externes d'une première (2a) et d'une dernière (2b) plaque sont aptes à recevoir de seconds intercalaires (11) formant ailettes.Heat exchanger according to one of claims 8 and characterized in that the external faces of a first (2a) and a last (2b) plate are capable of receiving second spacers (11) forming fins. Echangeur de chaleur selon la revendication 10, caractérisé en ce qu'il comprend au moins une joue d'extrémité (12) apte à protéger un second intercalaire (11) et solidaire des deux boîtes à fluide (4).Heat exchanger according to claim 10, characterized in that it comprises at least one end cheek (12) capable of protecting a second interlayer (11) and integral with the two fluid boxes (4).
EP19950108060 1994-05-30 1995-05-26 Heat exchanger for processing a fluid Expired - Lifetime EP0685699B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9406554 1994-05-30
FR9406554A FR2720489B1 (en) 1994-05-30 1994-05-30 Heat exchanger for the treatment of a fluid.

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EP0685699A1 true EP0685699A1 (en) 1995-12-06
EP0685699B1 EP0685699B1 (en) 1998-07-22

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DE (1) DE69503570T2 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180007941A1 (en) * 2011-07-28 2018-01-11 Nestec Sa Methods and Devices for Heating or Cooling Viscous Materials
US20180156547A1 (en) * 2016-12-06 2018-06-07 Denso Marston Ltd. Heat exchanger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2344588A (en) * 1941-01-06 1944-03-21 Blauvelt Associates Inc Heat transfer device
FR2479438A1 (en) 1980-03-26 1981-10-02 Chausson Usines Sa EXCHANGER FOR COOLING A HIGH TEMPERATURE FLUID
US4501321A (en) * 1982-11-10 1985-02-26 Blackstone Corporation After cooler, charge air cooler and turbulator assemblies and methods of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2344588A (en) * 1941-01-06 1944-03-21 Blauvelt Associates Inc Heat transfer device
FR2479438A1 (en) 1980-03-26 1981-10-02 Chausson Usines Sa EXCHANGER FOR COOLING A HIGH TEMPERATURE FLUID
GB2073395A (en) * 1980-03-26 1981-10-14 Chausson Usines Sa A heat exchanger for cooling a high temperature fluid
US4501321A (en) * 1982-11-10 1985-02-26 Blackstone Corporation After cooler, charge air cooler and turbulator assemblies and methods of making the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180007941A1 (en) * 2011-07-28 2018-01-11 Nestec Sa Methods and Devices for Heating or Cooling Viscous Materials
US11064720B2 (en) * 2011-07-28 2021-07-20 Société des Produits Nestlé S.A. Methods and devices for heating or cooling viscous materials
US11684077B2 (en) 2011-07-28 2023-06-27 Société des Produits Nestlé S.A. Methods and devices for heating or cooling viscous materials
US12137711B2 (en) 2011-07-28 2024-11-12 Société des Produits Nestlé S.A. Methods and devices for heating or cooling viscous materials
US12426613B2 (en) 2011-07-28 2025-09-30 Societe Des Produits Nestle S.A. Methods and devices for heating or cooling viscous materials
US20180156547A1 (en) * 2016-12-06 2018-06-07 Denso Marston Ltd. Heat exchanger
CN108151559A (en) * 2016-12-06 2018-06-12 电装马斯顿有限公司 Heat exchanger
CN108151559B (en) * 2016-12-06 2020-11-06 电装马斯顿有限公司 Heat exchanger
GB2557320B (en) * 2016-12-06 2021-10-27 Denso Marston Ltd Heat exchanger

Also Published As

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DE69503570T2 (en) 1998-11-19
EP0685699B1 (en) 1998-07-22
DE69503570D1 (en) 1998-08-27
FR2720489B1 (en) 1996-07-12
FR2720489A1 (en) 1995-12-01

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