EP0685699B1 - Heat exchanger for processing a fluid - Google Patents
Heat exchanger for processing a fluid Download PDFInfo
- Publication number
- EP0685699B1 EP0685699B1 EP19950108060 EP95108060A EP0685699B1 EP 0685699 B1 EP0685699 B1 EP 0685699B1 EP 19950108060 EP19950108060 EP 19950108060 EP 95108060 A EP95108060 A EP 95108060A EP 0685699 B1 EP0685699 B1 EP 0685699B1
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- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- fluid
- bars
- plates
- exchanger according
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- 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.)
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- 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 treatment of a fluid, in particular for cooling a high temperature air flow from the turbo compressor of a industrial vehicle.
- heat exchangers which include two fluid boxes, a multiplicity of bars dividers arranged in pairs, as well as a multiplicity of plates arranged in pairs to frame the pairs of bars and form in collaboration with them chambers in which a fluid can circulate.
- the object of the invention is in particular to remedy this disadvantage.
- each box with fluid comprises a collecting plate provided with openings suitable for receiving end portions of pairs of bars, and openings capable of authorizing the free circulation of the fluid between the chambers and the fluid boxes, and the ends of the pairs of plates are folded and fixed against the collector plates of such so that two facing plates, belonging respectively to two consecutive chambers, their ends turned one towards each other, thus forming conduits in which can circulate a flow of air to be treated.
- the exchanger thus formed no longer requires use transverse bars which are advantageously replaced through the openings made in the collector plates.
- the full space between two openings then serves as a spacer of separation between two chambers, thus directly creating air circulation ducts.
- the folded ends of the pairs of plates are advantageously turned towards each other.
- each bar comprises a central part substantially linear, extending parallel to the edge longitudinal of the plates and extended on both sides by a bent part to allow the embedding of said bar in an opening, each bent part being extended by a end part housed in a fluid box.
- each pair of bars is embedded in the same opening which is used for both housing for arrays and circulation mouth of the fluid.
- the end portions of the pairs of bars are folded back on themselves forming a 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 same section as said strip, forming a housing.
- Each housing is positioned substantially symmetrically on the side and other with a central opening forming a circulation mouth fluid.
- each bar is immobilized independently.
- the collector plates include fixing lugs for keep the folded ends belonging respectively to a first and a last bedroom.
- the conduits comprise first spacers forming fins, to increase the heat exchange surface.
- conduits advantageously constituted by plates, whose ends are upside down, provide protection effective for these fragile fins, and especially during the assembly stage.
- the external faces of a first and a last plate are suitable for receiving second spacers forming fins.
- the invention provides that these second spacers have a height substantially double that of the first dividers, which significantly increases the surface heat exchange.
- the exchanger comprises at least one end cheek capable of protect a second interlayer and secured to the two boxes fluid.
- Figure 1 shows schematically part of an exchanger of the type says with bars and plates which has pairs of bars framed by two plates 2a and 2b.
- Plate 2a is the so-called lower plate, the plate 2b being the so-called plate superior.
- 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 can circulate a cooling fluid from a box fluid 4.
- This cooling fluid could for example be water for cooling a supercharged vehicle engine industrial.
- Each plate 2 includes a curved end portion 5 so that it forms a right angle with the part main plate. So each bottom plate 2a has a downwardly curved end portion 5a, and each upper plate 2b has a curved end portion 5b to the top.
- This arrangement advantageously allows between two consecutive bedrooms 3 a free space forming a conduit 6 in which the fluid to be treated can circulate.
- This fluid is for example an air flow coming from a industrial vehicle turbocharger. Its temperature can be significantly higher than 100'C, which requires a efficient cooling, such as that achieved by the exchanger according to the invention.
- it houses, inside the conduits 6, first inserts 7 forming dissipation fins.
- the two end portions 5 of the plates are substantially in contact with a collecting plate 8 serving as a cover for a fluid box 4.
- each header plate 8 comprises openings 9 of substantially parallel-piped shape and parallel to each other.
- Each of these openings 9 is capable of forming housing for receive the ends C of a pair of bars and / or form mouth to allow free circulation of the coolant between a chamber 3 and a fluid box 4 opposite which it is.
- the openings 9 extend parallel to one of the sides of the collector plate 8, which is parallel in plan of bedrooms 3.
- the length of an opening 9 can only be less than the distance between two bars 1a and 1b of the same pair.
- each bar includes a part central A substantially linear, which extends parallel to the longitudinal edge of the plates 2, and extended on both sides by a bent part B, itself extended by a part Terminal C.
- Each bar can thus be embedded thanks to its part angled B in an opening 9, the end part C being then housed in the fluid box 4.
- an opening 9a is made to correspond to a chamber 3.
- Each opening 9a is capable of both receiving the C ends of a pair of strips, and to allow free refrigerant circulation.
- the height of the opening 9a is substantially equal (by lower value) to the distance which separates two plates 2a and 2b of 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 part C terminal of the same pair of bars is folded back on itself by forming an arc oriented towards the center of opening 9a.
- the radius of curvature of the terminal parts C is chosen so that two terminal parts C of a same pair of bars are in contact in one part 13 and repel each other. In these conditions, each bar 1 is blocked by constraint against ends of the opening 9a in which it is embedded.
- the length of these openings 9b is substantially less than the space between 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 of the same room 3.
- a second category of openings 9c, forming housing, is suitable for receiving a strip 1 and only one. Its section is therefore identical to that of bar 1 (by value substantially superior).
- 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 so independent in an opening 9c.
- the terminal parts C of the bars 1 are linear and do not constitute a simple extension of the bent parts B.
- the chambers are stacked before brazing, thanks to to the fixing of two fixing lugs 10a and 10b, respectively below the space provided for the game terminal 5a of the first plate 2a and above the location provided for the terminal part 5b of the last plate 2b.
- dividers 11 In order to better protect the latter dividers 11 upper and lower, it may turn out useful, in certain conditions of congestion, to house in below the lower tab 11, and above the upper tab 11, a plate called "end cheek" 12. These cheeks 12 will be fixed directly on the boxes to fluid 4. These cheeks may also include buttonholes to allow the exchanger to be attached.
- the shape of the terminal parts of the bars can be modified to facilitate the circulation of 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)
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 treatment of a fluid, in particular for cooling a high temperature air flow from the turbo compressor of a industrial vehicle.
On connaít déjà des échangeurs de chaleur qui comprennent deux boítes à fluide, une multiplicité de barrettes intercalaires disposées par paires, ainsi qu'une multiplicité de plaques disposées par paires pour encadrer les paires de barrettes et former en collaboration avec elles des chambres dans lesquelles peut circuler un fluide.We already know heat exchangers which include two fluid boxes, a multiplicity of bars dividers arranged in pairs, as well as a multiplicity of plates arranged in pairs to frame the pairs of bars and form in collaboration with them chambers in which a fluid can circulate.
Un échangeur de ce type est connu notamment d'après le brevet français FR-A-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 FR-A-2,479,438, which includes pairs of longitudinal bars and transverse, each pair of longitudinal bars being framed at its ends by two pairs of bars transverse, 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 boítes à fluide et la chambre qu'elles encadrent.In this known type of exchanger, the bars longitudinal collaborate with the plates to form fluid circulation chambers, while the bars transverse serve both as spacers between two successive chambers, and fluid circulation vents between the fluid boxes and the chamber 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 is the complexity of assembling the different elements which constitute.
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 boítes à fluide.Indeed, in order to make this stack of plates rigid and bars, we have to screw each bar longitudinal on lateral metal frames. We perform then soldering the elements together, then we screw each transverse bar on 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 disadvantage.
Elle propose à cet effet un échangeur de chaleur du type défini précédemment dans lequel, selon l'invention, chaque boíte 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 boítes à fluide, et 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.To this end, it offers a heat exchanger of the type defined above in which, according to the invention, each box with fluid comprises a collecting plate provided with openings suitable for receiving end portions of pairs of bars, and openings capable of authorizing the free circulation of the fluid between the chambers and the fluid boxes, and the ends of the pairs of plates are folded and fixed against the collector plates of such so that two facing plates, belonging respectively to two consecutive chambers, their ends turned one towards each other, thus forming conduits in which can circulate a flow of air 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 exchanger thus formed no longer requires use transverse bars which are advantageously replaced through the openings made in the collector plates. The full space between two openings then serves as a spacer of separation 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 the placing the ends of the plates upside down belonging to two consecutive rooms.
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 each other.
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 boíte à fluide.The length of the openings is significantly less than the width of a collector plate. As a result, barrettes substantially linear could not be accommodated in such openings, since they would not be next to these. This is why according to another characteristic of the invention, each bar comprises a central part substantially linear, extending parallel to the edge longitudinal of the plates and extended on both sides by a bent part to allow the embedding of said bar in an opening, each bent part being extended by a 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 is used for both housing for arrays and circulation mouth of the fluid.
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 portions of the pairs of bars are folded back on themselves forming a 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 found blocked transversely in the opening since the parts bar pair terminals 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 same section as said strip, forming a housing. Each housing is positioned substantially symmetrically on the side and other with a central opening forming a circulation mouth 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 forme de réalisation 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 embodiment of the invention, the collector plates include fixing lugs for keep the folded ends belonging respectively to a first and a last bedroom.
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 authorize assembly and the stacking of successive chambers before the introduction of the exchanger in a brazing furnace.
Selon une autre forme de réalisation de l'invention, les conduits comprennent de premiers intercalaires formant ailettes, pour augmenter la surface d'échange thermique.According to another embodiment 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, whose ends are upside down, provide protection effective for these fragile fins, and especially during the assembly stage.
Selon encore une autre forme de réalisation 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 embodiment of the invention, the external faces of a first and a last plate are suitable for 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 dividers, which significantly increases the surface heat exchange.
Selon une dernière forme de réalisation de l'invention, l'échangeur comprend au moins une joue d'extrémité apte à protéger un second intercalaire et solidaire des deux boítes à fluide.According to a last embodiment of the invention, the exchanger comprises at least one end cheek capable of protect a second interlayer and secured to the two boxes fluid.
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.
- 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 part of an exchanger of the type
says with bars and plates which has pairs of
bars framed by two
Comme cela est schématisé sur la figure 2, à chaque niveau
1 correspondent deux barrettes 1a et 1b 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 boíte à
fluide 4. As shown in Figure 2, at each
Ce fluide de refroidissement pourra être par exemple l'eau de refroidissement d'un moteur suralimenté de véhicule industriel.This cooling fluid could for example be water for cooling a supercharged vehicle engine industrial.
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 includes a curved end portion 5
so that it forms a right angle with the part
main plate. So each
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
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 allows between two consecutive bedrooms 3 a free space forming a conduit 6 in which the fluid to be treated can circulate.
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 industrial vehicle turbocharger. Its temperature can be significantly higher than 100'C, which requires a efficient cooling, such as that achieved by the exchanger according to the invention. To increase the heat exchange surface between the air flow 15 to be treated and the cooling, it houses, inside the conduits 6, first inserts 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 boíte à fluide 4.The two end portions 5 of the plates are substantially
in contact with a
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
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 boíte à fluide 4 en regard de
laquelle elle se trouve.Each of these openings 9 is capable of forming housing for
receive the ends C of a pair of bars and / or form
mouth to allow free circulation of the coolant
between a
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.For this purpose, the openings 9 extend parallel to
one of the sides of the
Pour des raisons évidentes, la longueur d'une ouverture 9
ne peut être qu'inférieure à la distance qui sépare deux
barrettes 1a et 1b d'une même paire.For obvious reasons, the length of an opening 9
can only be less than the distance between two
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 includes a part central A substantially linear, which extends parallel to the longitudinal edge of the plates 2, and extended on both sides by a bent part B, itself extended by a part Terminal 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 boíte à fluide 4.Each bar can thus be embedded thanks to its part angled B in an opening 9, the end part C being then 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
(Figure 2), an opening 9a is made to correspond to a
Il y aura donc autant d'ouvertures 9a que de niveaux.There will therefore be as
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 capable of both receiving the C ends of a pair of strips, and to allow free refrigerant circulation.
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
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 part
C terminal of the same pair of bars is folded back on itself
by forming an arc oriented towards the center of
opening 9a. The radius of curvature of the terminal parts C
is chosen so that two terminal parts C of a
same pair of bars are in contact in one
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
(figure 3), we match a
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 boíte 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 for
allow the free circulation of the fluid between the fluid box
4 and the
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
Chaque ouverture 9c formant logement pour barrette est
positionnée sensiblement symétriquement de part et d'autre de
l'ouverture 9b formant bouche.Each
Chaque barrette 1 d'une paire est donc bloquée de façon
indépendante dans une ouverture 9c.Each
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
terminal parts C of the
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, thanks to
to the fixing of two fixing
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
Enfin, pour accroítre 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, we
fixed under the first plate 5a and on the
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 boítes à
fluide 4. Ces joues pourront également comporter des
boutonnières pour autoriser la fixation de l'échangeur.Furthermore, in order to better protect the
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 FR-A-2 071 016.We then braze the exchanger as described, either in a salt bath or in the oven. For that, we will put in preferably uses the soldering process described by the patent French FR-A-2 071 016.
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 schematically and described in detail in the present description. Various modifications can be made 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 fluid.
Claims (11)
- A heat exchanger of the type comprising two fluid headers (4), a multiplicity of interposed bars (1a, 1b) disposed in pairs, and a multiplicity of plates (2a, 2b) disposed in pairs so as to enclose the pairs of bars (1a, 1b) and to define, in collaboration with them, chambers (3) in which a fluid can flow,
characterised in that each fluid header (4) comprises a header plate (8) having apertures (9a; 9c) adapted to receive terminal portions (C) of the pairs of bars (1a, 1b), and apertures (9a; 9b) adapted to permit free flow of the fluid between the chambers (3) and the fluid headers (4), and in that the ends (5) of the pairs of plates (2a, 2b) are bent back and fixed against the header plates (8), in such a way that two mutually facing plates (2b and 2a), associated respectively with two consecutive chambers (3), have their ends (5b and 5a) turned towards each other, thereby forming ducts (6) in which a stream of air to be treated can flow. - A heat exchanger according to Claim 1,
characterised in that the bent back ends (5a, 5b) of the pairs of plates are turned towards each other. - A heat exchanger according to Claim 1 or Claim 2, characterised in that each bar (1) comprises a substantially linear central portion (A), which extends parallel to the longitudinal edge of the plates (2) and which is extended on either side by a bent portion (B) so as to enable the said bar (1) to be rooted in one of the apertures (9), each bent portion (B) being extended by a terminal portion (C) contained in one of the fluid headers (4).
- A heat exchanger according to one of Claims 1 to 3, characterised in that each pair of bars (1a, 1b) is rooted in the same aperture (9a), which serves both to contain the bar and as a mouth for flow of the fluid.
- A heat exchanger according to Claim 3 or Claim 4, characterised in that the terminal portions (C) of the pairs of bars (1a, 1b) are bent back on themselves to define an arc of a circle, in such a way that the said terminal portions (C) are in contact so as to hold the said bars (1a and 1b) against the ends of the aperture (9a) in which they are rooted.
- A heat exchanger according to one of Claims 1 to 3, characterised in that each bar (1) of a pair of bars is rooted in an aperture (9c), of the same cross section as the said bar (1) and constituting a housing for the said bar, each housing being positioned substantially symmetrically on either side of a central aperture (9b) constituting a mouth for flow of the fluid.
- A heat exchanger according to Claim 3 or Claim 6, characterised in that the terminal portions (C) of the pairs of bars are substantially linear.
- A heat exchanger according to one of the preceding Claims, characterised in that the header plates (8) include fastening lugs (10a, 10b) for holding the bent-back ends (5a, 5b), in a first and a last chamber (3) respectively.
- A heat exchanger according to Claim 1,
characterised in that the ducts (6) include first interposed elements (7) constituting fins for increasing the heat exchange surface area. - A heat exchanger according to one of Claims 1 to 8, characterised in that the external faces of one of the first plates (2a) and one of the last plates (2b) are adapted to receive second interposed elements (11) constituting fins.
- A heat exchanger according to Claim 10,
characterised in that it includes at least one terminal piece (12) adapted to protect one of the second interposed elements (11) and fixed to both fluid headers (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9406554A FR2720489B1 (en) | 1994-05-30 | 1994-05-30 | Heat exchanger for the treatment of a fluid. |
| FR9406554 | 1994-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0685699A1 EP0685699A1 (en) | 1995-12-06 |
| EP0685699B1 true EP0685699B1 (en) | 1998-07-22 |
Family
ID=9463647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19950108060 Expired - Lifetime EP0685699B1 (en) | 1994-05-30 | 1995-05-26 | Heat exchanger for processing a fluid |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0685699B1 (en) |
| DE (1) | DE69503570T2 (en) |
| FR (1) | FR2720489B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10876796B2 (en) * | 2016-12-06 | 2020-12-29 | Denso Marston Ltd. | Heat exchanger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2737270T3 (en) * | 2011-07-28 | 2018-10-31 | Nestec S.A. | Methods and devices for heating or cooling viscous materials |
Family Cites Families (3)
| 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 |
-
1994
- 1994-05-30 FR FR9406554A patent/FR2720489B1/en not_active Expired - Fee Related
-
1995
- 1995-05-26 DE DE1995603570 patent/DE69503570T2/en not_active Expired - Fee Related
- 1995-05-26 EP EP19950108060 patent/EP0685699B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10876796B2 (en) * | 2016-12-06 | 2020-12-29 | Denso Marston Ltd. | Heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0685699A1 (en) | 1995-12-06 |
| FR2720489A1 (en) | 1995-12-01 |
| FR2720489B1 (en) | 1996-07-12 |
| DE69503570D1 (en) | 1998-08-27 |
| DE69503570T2 (en) | 1998-11-19 |
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