EP2097705B1 - Heat exchanger with plates - Google Patents

Heat exchanger with plates Download PDF

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Publication number
EP2097705B1
EP2097705B1 EP07871987.9A EP07871987A EP2097705B1 EP 2097705 B1 EP2097705 B1 EP 2097705B1 EP 07871987 A EP07871987 A EP 07871987A EP 2097705 B1 EP2097705 B1 EP 2097705B1
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EP
European Patent Office
Prior art keywords
spacer
seal
plates
heat exchanger
plate
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EP07871987.9A
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German (de)
French (fr)
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EP2097705A2 (en
Inventor
Olivier Noel-Baron
Christophe Wibaut
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Alfa Laval Vicarb SAS
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Alfa Laval Vicarb SAS
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Priority to PL07871987T priority Critical patent/PL2097705T3/en
Publication of EP2097705A2 publication Critical patent/EP2097705A2/en
Application granted granted Critical
Publication of EP2097705B1 publication Critical patent/EP2097705B1/en
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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
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • 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
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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
    • F28F3/10—Arrangements for sealing the margins

Definitions

  • the invention relates to the field of plate heat exchangers between which circulate two fluids brought to different temperatures and one of which receives / discharges the heat energy of the other.
  • the invention relates more particularly to large-size plate heat exchangers, the frame of which has inside a guide rail making it possible to guide the plates parallel to the interior of the frame before carrying out the clamping of the plates on one another. to ensure the seal between the two circuits.
  • a peripheral seal is positioned on each of the plates of the exchanger.
  • Such plates equipped with peripheral sealing gaskets are in particular described in the document GB-1,592,069 .
  • the aim of the invention is therefore to eliminate the offset which may occur between the different plates of a heat exchanger when positioning the plates in the frame and then when the plates are clamped against each other.
  • this objective is achieved without degrading the sealing function performed by the peripheral seal.
  • the invention therefore relates to a heat exchanger comprising a set of plates defining between them fluid circuits circulating alternately by means of seals attached between each pair of two adjacent plates.
  • Each plate comprises at least one guide cutout formed at at least one of its ends and which makes it possible to guide each plate inside a frame.
  • the seals ensure the tightness of the volume defined between each pair of adjacent plates, each of the seals having an upper surface facing one of said two adjacent plates, the upper surface having, before compression between said two adjacent plates, a portion in point and a concave portion on either side of the point.
  • the heat exchanger is characterized in that it also comprises between each pair of two adjacent plates, and near the guide cutout, at least one spacer intended to be compressed and arranged in contact with the two plates. adjacent.
  • Each spacer prevents any tilting of one plate relative to the other during tightening and has, before compression, a thickness at least equal to that of the seal.
  • the plates are all arranged parallel to each other and no offset can occur, even when pressurizing the seal since the spacer positioned close to the guide cutout prevents tilting of one plate relative to the other.
  • each spacer can be inserted in a groove formed in one of the plates with which it comes into contact.
  • the spacer can be positioned, or even glued, inside a groove making it possible to prevent the spacer from slipping during tightening in particular.
  • These grooves are generally made by means of a press and a stamp during the forging operation of the plates to generate a plurality of corrugations and thus increase the surface area of the heat exchange between the fluids inside the plate. 'interchange.
  • each spacer may have a substantially rectangular parallelepiped shape. In this way, it has two parallel faces, and it has a constant section compatible with a manufacturing process such as extrusion or molding.
  • each spacer may have a compressibility greater than that of the seal.
  • the spacer which has a thickness greater than that of the seal, is able to compress without hindering the subsequent compression of the seal.
  • such a spacer can be produced in different ways and may or may not be secured to the seal.
  • Each spacer is a protuberance of the seal.
  • the seal and the spacer form a monolithic assembly which can be produced in a single operation, in particular by a molding process.
  • the heat exchanger further comprises a connecting portion between each seal and each spacer.
  • This configuration makes it possible to position the spacer close to the guide cutout, without however modifying the position of the seal on the plate.
  • the function of this connecting portion is only to facilitate the manufacture of the exchanger by avoiding increasing the number of parts constituting it as well as the positioning of the spacer on the plate.
  • This connecting portion has a thickness less than that of the seal, and therefore that of the spacer as well.
  • Each spacer can be separated from the seal. In this way, it is possible to arrange each of the elements on a plate independently. Such a variant therefore makes it possible to eliminate the connecting portion and to use the existing seals in conventional heat exchangers already manufactured.
  • seals and the spacers can be envisaged and in particular they can be made from different materials or not.
  • the spacers and the seals can be made of the same material.
  • they can for example be molded in the same mold and manufactured simultaneously.
  • the spacers and the seals can be made from two different materials. In this way, it is in particular possible to adapt the compressibility of the spacers so as not to locally modify the compressibility of the seal.
  • the invention relates to a heat exchanger (1) as shown in figure 1 .
  • This type of plate heat exchanger (10) thus comprises two fluid circuits (2, 3) in which two fluids circulate to exchange their heat energy.
  • these circuits (2, 3) are delimited by a seal (4) defining the periphery of the exchange zone on each plate.
  • the plates (10) are positioned inside a frame (6) and are guided in this frame by means of a guide cutout (5) cooperating with a rail attached to the frame (6).
  • Spacers (7) then make it possible to position each plate (10) at an equal distance from one another and in parallel near this guide rail.
  • the spacers (7) make it possible to ensure the parallel positioning of the plates with respect to each other before the tightening operation aimed at compressing the seal (4).
  • the spacers (7) can form a protuberance of the seal (4). This embodiment makes it possible to facilitate the assembly and manufacturing operations of such an exchanger (1).
  • the spacers (17) can also be separate from the seal (4).
  • the spacers (17) can also be separate from the seal (4).
  • the spacer (7) is in this case a protuberance of the seal (4) and is linked to the latter by means of a connecting portion (9). Furthermore, the thickness (E) of the spacer (7) is greater than the thickness (e) of the seal (4). In this way, an upper face (27) of the spacer (7) first comes into contact with the upper plate (11) during the positioning of the plates (10,11) facing each other in the frame (6).
  • a gasket having a thickness e of 6 mm combined with a spacer having a thickness E of 6.2 mm can be used.
  • a lower face (37) of the spacer (7) cooperates with a groove (8) so as to facilitate the positioning and securing of the spacer (7) on the plate (10).
  • the spacer (7) must be very precisely positioned on the plate (10) so as to cooperate with a flat surface on the back of the facing plate (11).
  • the upper (27) and lower (37) faces are, in the variant shown, substantially planar so as to form a spacer (7) of substantially rectangular parallelepiped shape.
  • the upper (27) and lower (37) faces can also form a left surface of concave shape before compression.
  • the contact between the spacer (7) and the adjacent plate (11) is linear before becoming surface.
  • Such a line contact near the guide rail makes it possible to guarantee the parallel positioning of the plates relative to each other.

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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

DOMAINE TECHNIQUETECHNICAL AREA

L'invention se rapporte au domaine des échangeurs thermiques à plaques entre lesquelles circulent deux fluides portés à des températures différentes et dont l'un reçoit/évacue l'énergie calorifique de l'autre.The invention relates to the field of plate heat exchangers between which circulate two fluids brought to different temperatures and one of which receives / discharges the heat energy of the other.

L'invention vise plus particulièrement des échangeurs à plaques de grandes dimensions, dont le châssis présente à l'intérieur un rail de guidage permettant de guider les plaques parallèlement à l'intérieur du châssis avant de réaliser le serrage des plaques les unes sur les autres pour assurer l'étanchéité entre les deux circuits.The invention relates more particularly to large-size plate heat exchangers, the frame of which has inside a guide rail making it possible to guide the plates parallel to the interior of the frame before carrying out the clamping of the plates on one another. to ensure the seal between the two circuits.

ART ANTERIEURPRIOR ART

De façon générale, de manière à assurer l'étanchéité entre les différents circuits de fluide, un joint périphérique est positionné sur chacune des plaques de l'échangeur. De telles plaques équipées de joints périphériques d'étanchéité sont notamment décrits dans le document GB-1 592 069 .In general, in order to ensure the seal between the different fluid circuits, a peripheral seal is positioned on each of the plates of the exchanger. Such plates equipped with peripheral sealing gaskets are in particular described in the document GB-1,592,069 .

Cependant, lorsque les plaques sont de très grandes dimensions, il peut se produire un décalage entre chacune des plaques lors de leur introduction à l'intérieur du châssis puis lors du serrage des plaques les unes contre les autres. Ce décalage peut notamment être dû à l'utilisation d'un joint d'étanchéité présentant une forme pointue également désigné par le terme de « ROOF TOP ». En effet, lorsqu'une plaque vient en contact de la pointe du joint d'étanchéité de la plaque adjacente, celle-ci se positionne alors sensiblement en travers et bascule autour de l'arête définie par la pointe du joint d'étanchéité. Ce phénomène est d'autant plus marqué lorsque les plaques présentent une seule découpe de guidage pour faciliter la mise en place des plaques à l'intérieur du châssis.However, when the plates are very large, there may be an offset between each of the plates when they are inserted inside the frame and then when the plates are clamped against each other. This offset may in particular be due to the use of a seal having a pointed shape also referred to by the term “ROOF TOP”. Indeed, when a plate comes into contact with the tip of the seal of the adjacent plate, the latter is then positioned substantially across and rocks around the edge defined by the tip of the seal. This phenomenon is all the more marked when the plates have a single guide cutout to facilitate the positioning of the plates inside the frame.

Le but de l'invention est donc de supprimer le décalage qui peut se produire entre les différentes plaques d'un échangeur thermique lors du positionnement des plaques dans le châssis puis du serrage des plaques les unes contre les autres. De plus, cet objectif est atteint sans pour autant dégrader la fonction d'étanchéité réalisée par le joint périphérique.The aim of the invention is therefore to eliminate the offset which may occur between the different plates of a heat exchanger when positioning the plates in the frame and then when the plates are clamped against each other. In addition, this objective is achieved without degrading the sealing function performed by the peripheral seal.

DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION

L'invention concerne donc un échangeur thermique comportant un ensemble de plaques définissant entre elles des circuits de fluide circulant en alternance au moyen de joints d'étanchéité rapportés entre chaque couple de deux plaques adjacentes. Chaque plaque comprend au moins une découpe de guidage ménagée au niveau d'au moins une de ses extrémités et qui permet de guider chaque plaque à l'intérieur d'un châssis. Les joints assurent l'étanchéité du volume défini entre chaque couple de plaques adjacentes, chacun des joints ayant une surface supérieure en regard de l'une desdites deux plaques adjacentes, la surface supérieure présentant, avant compression entre lesdites deux plaques adjacentes, une portion en pointe et une portion concave de part et d'autre de la pointe.The invention therefore relates to a heat exchanger comprising a set of plates defining between them fluid circuits circulating alternately by means of seals attached between each pair of two adjacent plates. Each plate comprises at least one guide cutout formed at at least one of its ends and which makes it possible to guide each plate inside a frame. The seals ensure the tightness of the volume defined between each pair of adjacent plates, each of the seals having an upper surface facing one of said two adjacent plates, the upper surface having, before compression between said two adjacent plates, a portion in point and a concave portion on either side of the point.

Selon l'invention, l'échangeur thermique se caractérise en ce qu'il comprend également entre chaque couple de deux plaques adjacentes, et à proximité de la découpe de guidage, au moins une entretoise destinée à être comprimée et agencée au contact des deux plaques adjacentes. Chaque entretoise empêche tout basculement d'une plaque par rapport à l'autre lors du serrage et présente, avant compression, une épaisseur au moins égale à celle du joint d'étanchéité.According to the invention, the heat exchanger is characterized in that it also comprises between each pair of two adjacent plates, and near the guide cutout, at least one spacer intended to be compressed and arranged in contact with the two plates. adjacent. Each spacer prevents any tilting of one plate relative to the other during tightening and has, before compression, a thickness at least equal to that of the seal.

Autrement dit, lorsqu'on positionne les plaques de l'échangeur à l'intérieur du châssis, celles-ci s'orientent parallèlement les unes par rapport aux autres en venant au contact de l'entretoise positionnée sur la plaque adjacente. Par ailleurs, avant de réaliser le serrage des plaques les unes contre les autres, le joint d'étanchéité n'est pas sollicité et par conséquent il ne vient pas au contact de la plaque adjacente.In other words, when the plates of the exchanger are positioned inside the frame, they orient themselves parallel to each other by coming into contact with the spacer positioned on the adjacent plate. Furthermore, before carrying out the clamping of the plates against each other, the seal is not stressed and therefore it does not come into contact with the adjacent plate.

Ainsi, lorsque le serrage des plaques commence, les plaques sont toutes agencées parallèlement les unes par rapport aux autres et aucun décalage ne peut se produire, même lors de la mise en pression du joint d'étanchéité puisque l'entretoise positionnée à proximité de la découpe de guidage empêche tout basculement d'une plaque par rapport à l'autre.Thus, when the tightening of the plates begins, the plates are all arranged parallel to each other and no offset can occur, even when pressurizing the seal since the spacer positioned close to the guide cutout prevents tilting of one plate relative to the other.

Avantageusement, chaque entretoise peut être insérée dans une gorge ménagée dans l'une des plaques avec laquelle elle vient en contact.Advantageously, each spacer can be inserted in a groove formed in one of the plates with which it comes into contact.

En effet, comme le joint d'étanchéité, l'entretoise peut être positionnée, voire collée, à l'intérieur d'une gorge permettant d'éviter le glissement de l'entretoise lors du serrage notamment.In fact, like the seal, the spacer can be positioned, or even glued, inside a groove making it possible to prevent the spacer from slipping during tightening in particular.

Ces gorges sont généralement réalisées au moyen d'une presse et d'une estampe lors de l'opération de matriçage des plaques pour générer une pluralité de corrugations et ainsi augmenter la surface de l'échange thermique entre les fluides à l'intérieur de l'échangeur.These grooves are generally made by means of a press and a stamp during the forging operation of the plates to generate a plurality of corrugations and thus increase the surface area of the heat exchange between the fluids inside the plate. 'interchange.

En pratique, chaque entretoise peut présenter une forme sensiblement parallélépipédique rectangle. De cette manière, il comporte deux faces parallèles, et il présente une section constante compatible avec un procédé de fabrication tel que l'extrusion ou le moulage.In practice, each spacer may have a substantially rectangular parallelepiped shape. In this way, it has two parallel faces, and it has a constant section compatible with a manufacturing process such as extrusion or molding.

Selon un mode de réalisation particulier, chaque entretoise peut présenter une compressibilité supérieure à celle du joint d'étanchéité.According to a particular embodiment, each spacer may have a compressibility greater than that of the seal.

Ainsi, lors du serrage des plaques les unes contre les autres, l'entretoise, qui présente une épaisseur supérieure à celle du joint d'étanchéité, est apte à se comprimer sans gêner la compression ultérieure du joint d'étanchéité.Thus, when the plates are tightened against each other, the spacer, which has a thickness greater than that of the seal, is able to compress without hindering the subsequent compression of the seal.

Par ailleurs, une telle entretoise peut être réalisée de différentes manières et être ou non solidarisée au joint d'étanchéité.Furthermore, such a spacer can be produced in different ways and may or may not be secured to the seal.

Chaque entretoise est une excroissance du joint d'étanchéité. Ainsi, le joint et l'entretoise forment un ensemble monolithique qui peut être réalisé en une seule opération, notamment par un procédé de moulage.Each spacer is a protuberance of the seal. Thus, the seal and the spacer form a monolithic assembly which can be produced in a single operation, in particular by a molding process.

L'échangeur thermique comporte en outre une portion de liaison entre chaque joint d'étanchéité et chaque entretoise. Cette configuration permet de positionner l'entretoise à proximité de la découpe de guidage, sans pour autant modifier la position du joint d'étanchéité sur la plaque. Cette portion de liaison n'a pour fonction que de faciliter la fabrication de l'échangeur en évitant d'augmenter le nombre de pièces le constituant ainsi que la mise en position de l'entretoise sur la plaque. Cette portion de liaison présente une épaisseur inférieure à celle du joint d'étanchéité, et par conséquent à celle de l'entretoise également.The heat exchanger further comprises a connecting portion between each seal and each spacer. This configuration makes it possible to position the spacer close to the guide cutout, without however modifying the position of the seal on the plate. The function of this connecting portion is only to facilitate the manufacture of the exchanger by avoiding increasing the number of parts constituting it as well as the positioning of the spacer on the plate. This connecting portion has a thickness less than that of the seal, and therefore that of the spacer as well.

Chaque entretoise peut être disjointe du joint d'étanchéité. De cette manière, il est possible de réaliser la disposition de chacun des éléments sur une plaque de manière indépendante. Une telle variante permet donc de supprimer la portion de liaison et d'utiliser les joints d'étanchéité existants dans les échangeurs thermiques classiques d'ores et déjà fabriqués.Each spacer can be separated from the seal. In this way, it is possible to arrange each of the elements on a plate independently. Such a variant therefore makes it possible to eliminate the connecting portion and to use the existing seals in conventional heat exchangers already manufactured.

Différents modes de réalisation des joints d'étanchéité et des entretoises peuvent être envisagés et notamment ils peuvent être réalisés dans des matériaux distincts ou non.Different embodiments of the seals and the spacers can be envisaged and in particular they can be made from different materials or not.

Ainsi, selon un premier mode de réalisation, les entretoises et les joints d'étanchéité peuvent être réalisés dans un même matériau. Ainsi, ils peuvent être par exemple être moulés dans le même moule et fabriqués simultanément.Thus, according to a first embodiment, the spacers and the seals can be made of the same material. Thus, they can for example be molded in the same mold and manufactured simultaneously.

Selon un second mode de réalisation, les entretoises et les joints d'étanchéité peuvent être réalisés dans deux matériaux distincts. De cette manière, il est notamment possible d'adapter la compressibilité des entretoises pour ne pas modifier localement la compressibilité du joint d'étanchéité.According to a second embodiment, the spacers and the seals can be made from two different materials. In this way, it is in particular possible to adapt the compressibility of the spacers so as not to locally modify the compressibility of the seal.

DESCRIPTION SOMMAIRE DES FIGURESSUMMARY DESCRIPTION OF FIGURES

La manière de réaliser l'invention et les avantages qui en découlent, ressortiront bien de la description du mode de réalisation qui suit, donné à titre indicatif mais non limitatif, à l'appui des figures dans lesquelles :

  • la figure 1 est une vue en coupe partielle d'un échangeur thermique conforme à l'invention ;
  • la figure 2 est une vue de face partielle d'une plaque d'échangeur ;
  • les figures 3 et 4 sont des vues en coupe transversale de différentes formes de l'entretoise au niveau de l'interstice entre deux plaques avant de réaliser leur serrage l'une contre l'autre.
The manner of carrying out the invention and the advantages which result therefrom will emerge from the description of the embodiment which follows, given as an indication but not limited to, in support of the figures in which:
  • the figure 1 is a partial sectional view of a heat exchanger according to the invention;
  • the figure 2 is a partial front view of an exchanger plate;
  • the figures 3 and 4 are cross-sectional views of different shapes of the spacer at the level of the gap between two plates before they are clamped against each other.

MANIERE DE DECRIRE L'INVENTIONMANNER OF DESCRIBING THE INVENTION

Comme déjà évoqué, l'invention concerne un échangeur thermique (1) tel que représenté à la figure 1. Ce type d'échangeur à plaques (10) comprend ainsi deux circuits de fluide (2,3) dans lesquels deux fluides circulent pour échanger leur énergie calorifique.As already mentioned, the invention relates to a heat exchanger (1) as shown in figure 1 . This type of plate heat exchanger (10) thus comprises two fluid circuits (2, 3) in which two fluids circulate to exchange their heat energy.

Tel que représenté, ces circuits (2, 3) sont délimités par un joint d'étanchéité (4) définissant la périphérie de la zone d'échange sur chaque plaque. Les plaques (10) sont positionnées à l'intérieur d'un châssis (6) et sont guidées dans ce châssis au moyen d'une découpe de guidage (5) coopérant avec un rail rapporté au niveau du châssis(6). Des entretoises (7) permettent alors de positionner chaque plaque (10) à égale distance l'une de l'autre et parallèlement à proximité de ce rail de guidage. Ainsi, les entretoises (7) permettent d'assurer le positionnement parallèle des plaques les unes par rapport aux autres avant l'opération de serrage visant à comprimer le joint d'étanchéité (4).As shown, these circuits (2, 3) are delimited by a seal (4) defining the periphery of the exchange zone on each plate. The plates (10) are positioned inside a frame (6) and are guided in this frame by means of a guide cutout (5) cooperating with a rail attached to the frame (6). Spacers (7) then make it possible to position each plate (10) at an equal distance from one another and in parallel near this guide rail. Thus, the spacers (7) make it possible to ensure the parallel positioning of the plates with respect to each other before the tightening operation aimed at compressing the seal (4).

Dans la variante représentée, les entretoises (7) peuvent former une excroissance du joint d'étanchéité (4). Ce mode de réalisation permet de faciliter les opérations d'assemblage et de fabrication de d'un tel échangeur (1).In the variant shown, the spacers (7) can form a protuberance of the seal (4). This embodiment makes it possible to facilitate the assembly and manufacturing operations of such an exchanger (1).

Tel que représenté par la variante de la figure 2, les entretoises (17) peuvent également être disjointes du joint d'étanchéité (4). Ainsi, il est possible de réaliser des échangeurs thermiques conformes à l'invention en utilisant un joint d'étanchéité classique d'ores et déjà produit.As represented by the variant of figure 2 , the spacers (17) can also be separate from the seal (4). Thus, it is possible to produce heat exchangers in accordance with the invention by using a conventional seal which has already been produced.

Tel que représenté à la figure 3, l'entretoise (7) est dans ce cas une excroissance du joint d'étanchéité (4) et est liée à celui-ci par l'intermédiaire d'une portion de liaison (9). Par ailleurs, l'épaisseur (E) de l'entretoise (7) est supérieure à l'épaisseur (e) du joint d'étanchéité (4). De cette manière, une face supérieure(27) de l'entretoise (7) vient la première en contact avec la plaque supérieure (11) lors du positionnement des plaques (10,11) l'une en regard de l'autre dans le châssis (6). A titre d'exemple, il peut être utilisé un joint présentant une épaisseur e de 6mm combiné à une entretoise présentant une épaisseur E de 6.2mm.As depicted in figure 3 , the spacer (7) is in this case a protuberance of the seal (4) and is linked to the latter by means of a connecting portion (9). Furthermore, the thickness (E) of the spacer (7) is greater than the thickness (e) of the seal (4). In this way, an upper face (27) of the spacer (7) first comes into contact with the upper plate (11) during the positioning of the plates (10,11) facing each other in the frame (6). By way of example, a gasket having a thickness e of 6 mm combined with a spacer having a thickness E of 6.2 mm can be used.

Par ailleurs, une face inférieure (37) de l'entretoise (7) vient coopérer avec une gorge (8) de façon à faciliter la mise en place et la solidarisation de l'entretoise (7) sur la plaque (10). En effet, l'entretoise (7) doit être très précisément positionnée sur la plaque (10) de manière à coopérer avec une surface plane au dos de la plaque (11) en regard.Furthermore, a lower face (37) of the spacer (7) cooperates with a groove (8) so as to facilitate the positioning and securing of the spacer (7) on the plate (10). Indeed, the spacer (7) must be very precisely positioned on the plate (10) so as to cooperate with a flat surface on the back of the facing plate (11).

Les faces supérieure (27) et inférieure (37) sont, dans la variante représentée, sensiblement planes de manière à former une entretoise (7) de forme sensiblement parallélépipédique rectangle.The upper (27) and lower (37) faces are, in the variant shown, substantially planar so as to form a spacer (7) of substantially rectangular parallelepiped shape.

Selon une autre variante, et tel que représenté à la figure 4, les faces supérieure (27) et inférieure (37) peuvent aussi former une surface gauche de forme concave avant compression. Dans ce cas, lors du serrage, le contact entre l'entretoise (7) et la plaque adjacente (11) est linéique avant de devenir surfacique. Un tel contact linéique à proximité du rail de guidage permet cependant de garantir le positionnement parallèle des plaques les une par rapport aux autres.According to another variant, and as shown in figure 4 , the upper (27) and lower (37) faces can also form a left surface of concave shape before compression. In this case, during tightening, the contact between the spacer (7) and the adjacent plate (11) is linear before becoming surface. Such a line contact near the guide rail, however, makes it possible to guarantee the parallel positioning of the plates relative to each other.

Il ressort de ce qui précède qu'un échangeur à plaques conforme à l'invention présente de multiples avantages, et notamment :

  • il permet de positionner parallèlement les plaques les unes par rapport aux autres, et ce perpendiculairement par rapport à la direction de poussée exercée lors du serrage des plaques l'une contre l'autre.
  • il permet notamment d'utiliser un seul rail de guidage, facilitant ainsi la mise en place de plaques de très grandes dimensions.
It emerges from the above that a plate heat exchanger according to the invention has many advantages, and in particular:
  • it makes it possible to position the plates parallel to each other, and this perpendicularly to the thrust direction exerted during the clamping of the plates against each other.
  • it makes it possible in particular to use a single guide rail, thus facilitating the installation of very large plates.

Claims (6)

  1. A heat exchanger (1) comprising a set of plates (10) defining between themselves circuits (2, 3) for fluids flowing alternately by means of seals (4) fitted between each pair of two adjacent plates, said seals ensuring sealing of a volume established between each pair of adjacent plates, each of the seals having an upper surface facing one of said two adjacent plates, the upper surface defining, before compression between said two adjacent plates, a tip and a concave portion on each side of the tip, each plate comprising at least one guide cutout (5) arranged at least at one of its ends and ensuring that each plate (10) is guided inside a frame (6), which heat exchanger comprises:
    - between each pair of two adjacent plates, and near the guide cutout (5), at least one spacer (7) designed to be compressed and arranged in contact with the two adjacent plates (10, 11), characterized in that each spacer (7,17) is arranged to prevent any tilting of one plate with respect to the other during tightening and has, before compression, a thickness at least equal to that of the seal, each spacer (7) being an excrescence of the seal (4); and
    - a connecting portion (9) between each seal (4) and each spacer (7), said connecting portion (9) being less thick than the seal (4).
  2. A heat exchanger according to claim 1, characterized in that each spacer is inserted in a groove (8) in one of the plates (10) with which it is in contact.
  3. A heat exchanger according to claim 1, characterized in that each spacer (7, 17) is substantially a rectangular parallelepiped in shape.
  4. A heat exchanger according to claim 1, characterized in that the compressibility of each spacer (7, 17) is greater than that of the seal (4).
  5. A heat exchanger according to claim 1, characterized in that the spacers (7, 17) and the seal (4) are made of the same material.
  6. A heat exchanger according to claim 1, characterized in that the spacers (7, 17) and the seals (4) are made of two different materials.
EP07871987.9A 2006-12-21 2007-12-20 Heat exchanger with plates Active EP2097705B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07871987T PL2097705T3 (en) 2006-12-21 2007-12-20 Heat exchanger with plates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0655792A FR2910607B1 (en) 2006-12-21 2006-12-21 PLATE HEAT EXCHANGER
PCT/FR2007/052576 WO2008084174A2 (en) 2006-12-21 2007-12-20 Heat exchanger with plates

Publications (2)

Publication Number Publication Date
EP2097705A2 EP2097705A2 (en) 2009-09-09
EP2097705B1 true EP2097705B1 (en) 2020-11-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07871987.9A Active EP2097705B1 (en) 2006-12-21 2007-12-20 Heat exchanger with plates

Country Status (13)

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US (1) US8544529B2 (en)
EP (1) EP2097705B1 (en)
JP (1) JP5430404B2 (en)
CN (1) CN101573580B (en)
AU (1) AU2007343217B2 (en)
BR (1) BRPI0720444B1 (en)
CA (1) CA2673014C (en)
DK (1) DK2097705T3 (en)
ES (1) ES2842048T3 (en)
FR (1) FR2910607B1 (en)
PL (1) PL2097705T3 (en)
RU (1) RU2439457C2 (en)
WO (1) WO2008084174A2 (en)

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EP2604962B1 (en) * 2011-12-13 2014-10-15 Vahterus Oy Plate heat exchanger and method for manufacturing a plate heat exchanger
WO2014139001A1 (en) * 2013-03-15 2014-09-18 Dana Canada Corporation Heat exchanger with jointed frame
EP3001131A1 (en) * 2014-09-26 2016-03-30 Alfa Laval Corporate AB A porthole gasket for a plate heat exchanger, a plate package and a plate heat exchanger with such a porthole gasket
PL3587984T3 (en) * 2018-06-28 2021-04-06 Alfa Laval Corporate Ab Heat transfer plate and gasket
US11624563B2 (en) * 2021-02-02 2023-04-11 Spx Flow, Inc. Lock strip for heat exchanger
US20230028911A1 (en) * 2021-07-20 2023-01-26 WCR Inc. Plate Heat Exchanger Gasket

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Also Published As

Publication number Publication date
BRPI0720444A2 (en) 2014-01-14
AU2007343217A1 (en) 2008-07-17
CN101573580A (en) 2009-11-04
EP2097705A2 (en) 2009-09-09
PL2097705T3 (en) 2021-06-14
US20100044021A1 (en) 2010-02-25
RU2009128028A (en) 2011-01-27
BRPI0720444B1 (en) 2019-09-03
US8544529B2 (en) 2013-10-01
CN101573580B (en) 2010-12-01
JP2010513839A (en) 2010-04-30
WO2008084174A2 (en) 2008-07-17
WO2008084174A3 (en) 2008-11-13
ES2842048T3 (en) 2021-07-12
AU2007343217B2 (en) 2011-02-17
CA2673014A1 (en) 2008-07-17
FR2910607A1 (en) 2008-06-27
JP5430404B2 (en) 2014-02-26
CA2673014C (en) 2013-07-02
RU2439457C2 (en) 2012-01-10
FR2910607B1 (en) 2009-02-06
DK2097705T3 (en) 2021-02-08

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