EP1295077B1 - Exchanger with multiple spacing - Google Patents

Exchanger with multiple spacing Download PDF

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Publication number
EP1295077B1
EP1295077B1 EP01949550A EP01949550A EP1295077B1 EP 1295077 B1 EP1295077 B1 EP 1295077B1 EP 01949550 A EP01949550 A EP 01949550A EP 01949550 A EP01949550 A EP 01949550A EP 1295077 B1 EP1295077 B1 EP 1295077B1
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EP
European Patent Office
Prior art keywords
sheets
spacer elements
sheet
winding
exchanger
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Expired - Lifetime
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EP01949550A
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German (de)
French (fr)
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EP1295077A1 (en
Inventor
Jean-Marie Gueguen
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Spirec SA
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Spirec SA
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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
    • F28D9/04—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 being formed by spirally-wound plates or laminae
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element

Definitions

  • the present invention relates to exchangers and in particular exchangers intended to ensure an exchange thermal between two fluids to be separated one of the other. It relates more particularly to spiral type exchangers produced by winding sheets, in particular of metal sheets. Such a heat exchanger representing the most prior art close is known from document US-4,124,069.
  • exchangers of this type are usually made from two sheets of sheet metal, kept apart by pins, which are wound, the spacing of each of the successive turns of this winding also being obtained by means of spikes, these spikes being formed by a deformation of metal, such as in particular stamping.
  • the spacing generated by the spikes define the respective pressure drops of the two exchanger fluid circuits.
  • this loss load can be achieved by increasing the spacing of the sheets and turns of the winding.
  • This increase in spacing cannot be obtained only by an increase in the height of the pins.
  • Gold the latter is limited by the deformability of the metal used which, of course, is a function of the nature of the material of the leaves, their thickness and base diameter of the picot formed.
  • such an embodiment presents the downside of increasing the importance of obstacles created and opposed to the circulation of the fluid in the two circuits, which increases the loss charge of the exchanger.
  • the object of the present invention is to provide a means for reducing the pressure drop of circuits of a spiral-type exchanger and this in increasing the spacing of the two sheets and / or the spacing of the consecutive turns of the exchanger and this without increasing the base diameter of the spacer pins used.
  • the spacer elements will be formed on the sheets by a deformation process such that in particular a stamping process.
  • the exchanger will include, between internal and / or external spacer elements, undulations arranged substantially transversely along at least part of the width of the leaves.
  • Such an arrangement allows, in the event that, in particular for manufacturing reasons, two elements spacers arranged on a transverse axis of the sheet would not be strictly of the same height, which would cause a variation in the length of the sheet when of the winding, to compensate for this variation in length by a deformation of the corrugation in the direction longitudinal.
  • the spacer elements may be most of frustoconical time, the small bases respective of these truncated cones coming into contact with one with each other and the surface of these allowing compensate for element positioning errors retractors thus produced.
  • the small base of the truncated cone element will be inclined at an angle to the plane of the sheet before winding. Such a provision allows you to self-adjust the height of the spacer elements as set out below.
  • the angle of inclination of the end faces of the spacers from the plane of the sheet will be such that, during the winding, the tension exerted on an outer sheet will effect of dragging the extreme face of the elements spacers of this sheet on the end faces corresponding spreader elements of a sheet internal.
  • FIG. 1 there is shown in a way schematic, respectively before and after winding, a sheet metal strip intended to constitute an exchanger according to the prior art.
  • This ribbon of sheet is cut to length and folded at one of its ends, along its transverse axis xx ', so that it appears in FIG. 1 as being formed of two sheets, namely a top sheet 1 and a lower sheet 2.
  • On the upper sheet 1 we have produced a series of pins 3a which are formed by stamping, from the inside to the outside, and on the lower sheet 2 in the same way, a series of pins 5b which extend from the outside towards inside. Under these conditions, when we wrap this set of two sheets 1 and 2, as well as shown in Figure 2, the pins 5b provide the necessary spacing between sheets 1 and 2 and the pins 3a provide the necessary spacing between the different successive turns.
  • the exchanger according to the invention incorporates the general basic principle, as shown in Figures 3, 4 and 4a, that is to say that it is also made from a top sheet 1 and a lower sheet 2 on which are formed, also by stamping, pins intended to ensure both the spacing of the upper sheet 1 and the lower sheet 2 as the spacing between the turns.
  • Two series of pins are thus produced from sheet 1, namely pins 3a of height h a which extend from the inside towards the outside and pins 3b of height h b which extend from l outside to inside.
  • the spacer pins preferably have the shape of truncated cones, that is to say that they extend from the base of the sheets 1 and 2, inwards and / or inwards. outside of these and terminate in a plate 6, namely plates 6a and 6b as regards the pins produced on the sheet 1 and plates 6a 'and 6b' as regards the pins produced on the sheet 2.
  • the respective spacings 1 of the spikes along the longitudinal axis yy 'of the sheets 1 and 2 to be wound up will be determined, either by calculation or by experience, so that, during the phase of winding, the pins 3b of the upper sheet and the pins 5b of the lower sheet are facing each other so that the spacing e of the sheets 1 and 2 is equal to the sum of the height h b and H b of the pins 3b and 5b which extend inwards and that the spacing E between the turns is equal to the sum of the height h a and H has pins which extend outwards.
  • ripples are intended to give the sheets a capacity of deformation along their axis longitudinal, which compensates for any variation in length of the leaves likely to occur during winding, and in particular those caused by variations in height of the different spikes located on the same substantially transverse axis. Ripples can only be done on one of the two sheets, and they may only extend over part of the width of these.
  • this spacing could be obtained by other means, and in particular using inserts or stops which would fixed on sheets 1 and 2, in particular by welding in the event that these sheets are made of metal or by collage in case they are in matter plastic.
  • the present invention is also advantageous in that it makes it possible to ensure self-adjustment correcting the variations in diameter of the turns, height of spikes, pitches, which appear during winding.
  • the pins 3b and 5b are also formed by deformation of the sheet, in particular by stamping.
  • the pins thus produced are also of overall frustoconical shape, the small base 6b, 6b 'of these, that is to say the contact face of the pins with each other, however being inclined at an angle i relative to the plane of the sheet before winding, as shown in FIG. 5. Under these conditions, when the winding of the different turns is observed, as shown in FIG.
  • slope i formed by the small base of the pins, is large enough to quickly correct the manufacturing tolerances.

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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)
  • Separation By Low-Temperature Treatments (AREA)
  • Details Of Aerials (AREA)
  • Winding Of Webs (AREA)

Abstract

The invention concerns a spiral exchanger, consisting of two overlapping fluid circuits, a first circuit formed by the space included between two spaced sheets (1, 2) wound on themselves and a circuit formed by the space included between the successive turns of said winding. Said exchanger is characterised in that the two sheets (1, 2) comprise, on their opposite surfaces, spacing elements, said spacing elements being arranged along the longitudinal axis of the sheets (1, 2), so that, once the sheets are wound, the spacing elements of a sheet (1) are urged to be pressed on the corresponding spacing elements of the other sheet (2), the end surface of at least one of the two pressed spacing elements is globally planar.

Description

La présente invention concerne les échangeurs et notamment les échangeurs destinés à assurer un échange thermique entre deux fluides devant être séparés l'un de l'autre. Elle concerne plus particulièrement les échangeurs de type spiralé réalisés par enroulement de feuilles notamment de tôles métalliques. Un tel échangeur représentant l'état de la technique le plus proche est connu par le document US-4,124,069.The present invention relates to exchangers and in particular exchangers intended to ensure an exchange thermal between two fluids to be separated one of the other. It relates more particularly to spiral type exchangers produced by winding sheets, in particular of metal sheets. Such a heat exchanger representing the most prior art close is known from document US-4,124,069.

On sait que les échangeurs de ce type sont généralement constitués à partir de deux feuilles de tôle, maintenues écartées par des picots, qui sont enroulées, l'écartement de chacune des spires successives de cet enroulement étant également obtenu au moyen de picots, ces picots étant formés par une déformation de métal, telle que notamment un emboutissage. Après enroulement, on procède à la soudure des bords des feuilles de façon à créer ainsi deux circuits de fluide indépendants, à savoir un premier circuit compris entre les deux feuilles et un second circuit compris entre les diverses spires de l'enroulement.We know that exchangers of this type are usually made from two sheets of sheet metal, kept apart by pins, which are wound, the spacing of each of the successive turns of this winding also being obtained by means of spikes, these spikes being formed by a deformation of metal, such as in particular stamping. After winding, we weld the edges of sheets so as to create two fluid circuits independent, namely a first circuit between the two sheets and a second circuit between the various turns of the winding.

On comprend que l'écartement généré par les picots définit les pertes de charge respectives des deux circuits de fluide de l'échangeur. Pour certaines applications, il est intéressant de diminuer cette perte de charge, ce que l'on peut obtenir en augmentant l'écartement des feuilles et des spires de l'enroulement. Cette augmentation de l'écartement ne peut être obtenue que par une augmentation de la hauteur des picots. Or cette dernière est limitée par la déformabilité du métal utilisé qui, elle-même, est bien entendu fonction de la nature du matériau constitutif des feuilles, de leur épaisseur et du diamètre de base du picot formé. On peut bien entendu augmenter le diamètre de base du picot afin d'augmenter du même coup la hauteur de celui-ci. Cependant, un tel mode de mise en oeuvre présente l'inconvénient d'augmenter l'importance des obstacles créés et s'opposant à la circulation du fluide dans les deux circuits, ce qui a pour effet d'augmenter la perte de charge de l'échangeur.We understand that the spacing generated by the spikes define the respective pressure drops of the two exchanger fluid circuits. For some applications, it is interesting to reduce this loss load, which can be achieved by increasing the spacing of the sheets and turns of the winding. This increase in spacing cannot be obtained only by an increase in the height of the pins. Gold the latter is limited by the deformability of the metal used which, of course, is a function of the nature of the material of the leaves, their thickness and base diameter of the picot formed. We can of course increase the base diameter of the pin so increase the height of it at the same time. However, such an embodiment presents the downside of increasing the importance of obstacles created and opposed to the circulation of the fluid in the two circuits, which increases the loss charge of the exchanger.

La présente invention a pour but de proposer un moyen permettant de diminuer la perte de charge des circuits d'un échangeur de type spiralé et ceci en augmentant l'écartement des deux feuilles et/ou l'écartement des spires consécutives de l'échangeur et ceci sans augmenter pour autant le diamètre de base des picots écarteurs utilisés.The object of the present invention is to provide a means for reducing the pressure drop of circuits of a spiral-type exchanger and this in increasing the spacing of the two sheets and / or the spacing of the consecutive turns of the exchanger and this without increasing the base diameter of the spacer pins used.

La présente invention a ainsi pour objet un échangeur de type spiralé, constitué de deux circuits de fluide imbriqués, à savoir un premier circuit formé par l'espace compris entre deux feuilles écartées qui sont enroulées sur elles-mêmes et un second circuit formé par l'espace compris entre les spires successives de cet enroulement et où:

  • les deux feuilles comportent, sur leurs faces respectivement en regard, des éléments écarteurs internes et/ou sur leurs faces opposées, des éléments écarteurs externes,
  • ces éléments écarteurs internes et externes sont disposés, suivant l'axe longitudinal des feuilles, de façon telle, qu'une fois les feuilles enroulées, les éléments écarteurs internes et externes d'une feuille viennent en appui sur les éléments écarteurs internes et externes correspondants de l'autre feuille, caractérisé en ce que:
  • la face extrême d'au moins l'un de deux éléments écarteurs en appui est globalement plane.
The present invention thus relates to a spiral-type exchanger, consisting of two nested fluid circuits, namely a first circuit formed by the space between two separated sheets which are wound on themselves and a second circuit formed by l space between the successive turns of this winding and where:
  • the two sheets have, on their respective facing faces, internal spacer elements and / or on their opposite faces, external spacer elements,
  • these internal and external spacer elements are arranged, along the longitudinal axis of the sheets, in such a way that once the sheets are wound, the internal and external spacer elements of a sheet come to bear on the corresponding internal and external spacer elements on the other sheet, characterized in that:
  • the end face of at least one of two supporting spacer elements is generally planar.

Préférentiellement, les éléments écarteurs seront formés sur les feuilles par un procédé de déformation tel que notamment un procédé d'emboutissage.Preferably, the spacer elements will be formed on the sheets by a deformation process such that in particular a stamping process.

Dans un mode de mise en oeuvre particulièrement intéressant de l'invention, l'échangeur comportera, entre les éléments écarteurs internes et/ou externes, des ondulations disposées sensiblement transversalement suivant au moins une partie de la largeur des feuilles. Une telle disposition permet, dans l'hypothèse où, notamment pour des raisons de fabrication, deux éléments écarteurs disposés sur un axe transversal de la feuille ne seraient pas rigoureusement d'une même hauteur, ce qui entraínerait une variation de longueur de la feuille lors de l'enroulement, de compenser cette variation de longueur par une déformation de l'ondulation dans le sens longitudinal.In a particularly embodiment interesting of the invention, the exchanger will include, between internal and / or external spacer elements, undulations arranged substantially transversely along at least part of the width of the leaves. Such an arrangement allows, in the event that, in particular for manufacturing reasons, two elements spacers arranged on a transverse axis of the sheet would not be strictly of the same height, which would cause a variation in the length of the sheet when of the winding, to compensate for this variation in length by a deformation of the corrugation in the direction longitudinal.

Les éléments écarteurs pourront être la plupart du temps de forme tronconique, les petites bases respectives de ces troncs de cône venant en contact l'une avec l'autre et la surface de celles-ci permettant de compenser les erreurs de positionnement des éléments écarteurs ainsi réalisés.The spacer elements may be most of frustoconical time, the small bases respective of these truncated cones coming into contact with one with each other and the surface of these allowing compensate for element positioning errors retractors thus produced.

Dans un autre mode de mise en oeuvre de l'invention, la petite base de l'élément de tronc de cône sera inclinée d'un angle par rapport au plan de la feuille avant son enroulement. Une telle disposition permet de réaliser un autoréglage de la hauteur des éléments écarteurs ainsi qu'exposé ci-après.In another embodiment of the invention, the small base of the truncated cone element will be inclined at an angle to the plane of the sheet before winding. Such a provision allows you to self-adjust the height of the spacer elements as set out below.

Préférentiellement l'angle d'inclinaison des faces extrêmes des éléments écarteurs par rapport au plan de la feuille sera tel que, lors de l'enroulement, la tension que l'on exerce sur une feuille externe aura pour effet de faire glisser la face extrême des éléments écarteurs de cette feuille sur les faces extrêmes correspondantes des éléments écarteurs d'une feuille interne.Preferably the angle of inclination of the end faces of the spacers from the plane of the sheet will be such that, during the winding, the tension exerted on an outer sheet will effect of dragging the extreme face of the elements spacers of this sheet on the end faces corresponding spreader elements of a sheet internal.

On décrira ci-après, à titre d'exemples non limitatifs, diverses formes d'exécution de la présente invention, en référence aux dessins annexés sur lesquels:

  • La figure 1 est une vue schématique en perspective d'une feuille de tôle pliée pourvue de picots écarteurs suivant l'état antérieur de la technique, avant l'étape d'enroulement.
  • La figure 1a est une variante de mise en oeuvre de l'invention dans laquelle les feuilles sont pourvues d'ondulations transversales disposées entre les éléments écarteurs.
  • La figure 2 est une vue schématique en coupe transversale de la feuille de tôle suivant l'état antérieur de la technique représentée sur la figure 1 après l'étape d'enroulement.
  • La figure 3 est une vue en coupe longitudinale et perspective de deux feuilles destinées à constituer un échangeur suivant l'invention avant l'étape d'enroulement.
  • La figure 3a est une vue en coupe longitudinale et perspective de deux feuilles destinées à constituer un échangeur suivant l'invention avant l'étape d'enroulement et qui sont pourvues des ondulations représentées sur la figure 1a.
  • La figure 4 est une vue schématique en coupe transversale d'un échangeur suivant l'invention réalisé à partir des feuilles métalliques, représentées sur la figure 3.
  • La figure 4a est une vue en coupe partielle agrandie d'une variante de mise en oeuvre d'une partie de l'enroulement représenté sur la figure 4.
  • La figure 5 est une variante en coupe longitudinale de deux feuilles avant enroulement illustrant une variante de mise en oeuvre de l'invention.
  • La figure 5a est une vue en coupe transversale agrandie de la variante de mise en oeuvre de l'invention représentée sur la figure 5.
  • La figure 6 est une vue en coupe partielle agrandie d'une variante de mise en oeuvre d'une partie de l'enroulement représenté sur la figure 4.
    • Various embodiments of the present invention will be described below, by way of non-limiting examples, with reference to the appended drawings in which:
  • Figure 1 is a schematic perspective view of a folded sheet of sheet provided with spacer pins according to the prior art, before the winding step.
  • Figure 1a is an alternative embodiment of the invention in which the sheets are provided with transverse corrugations arranged between the spacer elements.
  • Figure 2 is a schematic cross-sectional view of the sheet metal sheet according to the prior art shown in Figure 1 after the winding step.
  • Figure 3 is a longitudinal sectional perspective view of two sheets intended to constitute an exchanger according to the invention before the winding step.
  • Figure 3a is a longitudinal sectional perspective view of two sheets intended to constitute an exchanger according to the invention before the winding step and which are provided with the corrugations shown in Figure 1a.
  • FIG. 4 is a schematic cross-sectional view of an exchanger according to the invention produced from the metal sheets, shown in FIG. 3.
  • FIG. 4a is an enlarged partial section view of an alternative embodiment of part of the winding shown in FIG. 4.
  • FIG. 5 is a variant in longitudinal section of two sheets before winding illustrating an alternative embodiment of the invention.
  • FIG. 5a is an enlarged cross-sectional view of the variant embodiment of the invention shown in FIG. 5.
  • FIG. 6 is an enlarged partial section view of an alternative embodiment of part of the winding shown in FIG. 4.

    • Sur les figures 1 et 2 on a représenté de façon schématique, respectivement avant et après enroulement, un ruban de tôle destiné à constituer un échangeur suivant l'état antérieur de la technique. Ce ruban de tôle est mis à longueur et plié à l'une de ses extrémités, suivant son axe transversal xx', si bien qu'il se présente sur la figure 1 comme étant formé de deux feuilles, à savoir une feuille supérieure 1 et une feuille inférieure 2. Sur la feuille supérieure 1 on a réalisé une série de picots 3a qui sont formés par emboutissage, de l'intérieur vers l'extérieur, et sur la feuille inférieure 2 on a formé, de la même façon, une série de picots 5b qui s'étendent de l'extérieur vers l'intérieur. Dans ces conditions, lorsque l'on enroule cet ensemble des deux feuilles 1 et 2, ainsi que représenté sur la figure 2, les picots 5b assurent l'écartement nécessaire entre les feuilles 1 et 2 et les picots 3a assurent l'écartement nécessaire entre les différentes spires successives.In Figures 1 and 2 there is shown in a way schematic, respectively before and after winding, a sheet metal strip intended to constitute an exchanger according to the prior art. This ribbon of sheet is cut to length and folded at one of its ends, along its transverse axis xx ', so that it appears in FIG. 1 as being formed of two sheets, namely a top sheet 1 and a lower sheet 2. On the upper sheet 1 we have produced a series of pins 3a which are formed by stamping, from the inside to the outside, and on the lower sheet 2 in the same way, a series of pins 5b which extend from the outside towards inside. Under these conditions, when we wrap this set of two sheets 1 and 2, as well as shown in Figure 2, the pins 5b provide the necessary spacing between sheets 1 and 2 and the pins 3a provide the necessary spacing between the different successive turns.

    L'échangeur suivant l'invention reprend le principe général de base, ainsi que représenté sur les figures 3, 4 et 4a, c'est-à-dire qu'il est également constitué à partir d'une feuille supérieure 1 et d'une feuille inférieure 2 sur lesquelles on forme, également par emboutissage, des picots destinés à assurer aussi bien l'écartement de la feuille supérieure 1 et de la feuille inférieure 2 que l'écartement entre les spires. On réalise ainsi, à partir de la feuille 1 deux séries de picots, à savoir des picots 3a de hauteur h a qui s'étendent de l'intérieur vers l'extérieu et des picots 3b de hauteur h b qui s'étendent de l'extérieur vers l'intérieur.The exchanger according to the invention incorporates the general basic principle, as shown in Figures 3, 4 and 4a, that is to say that it is also made from a top sheet 1 and a lower sheet 2 on which are formed, also by stamping, pins intended to ensure both the spacing of the upper sheet 1 and the lower sheet 2 as the spacing between the turns. Two series of pins are thus produced from sheet 1, namely pins 3a of height h a which extend from the inside towards the outside and pins 3b of height h b which extend from l outside to inside.

    De même on a réalisé à partir de la feuille 2 deux séries de picots, à savoir des picots 5a de hauteur H a qui s'étendent de l'intérieur vers l'extérieur et des picots 5b de hauteur H b s'étendent de l'extérieur vers l'intérieur. Suivant l'invention les picots écarteurs ont préférentiellement la forme de troncs de cône, c'est-à-dire qu'ils s'étendent à partir de la base des feuilles 1 et 2, vers l'intérieur et/ou vers l'extérieur de celles-ci et se terminent par un plateau 6 à savoir des plateaux 6a et 6b en ce qui concerne les picots réalisés sur la feuille 1 et des plateaux 6a' et 6b' en ce qui concerne les picots réalisés sur la feuille 2. Ces plateaux sont intéressants dans la mesure où ils permettent de compenser un décalage qui se produirait, aussi bien dans le sens transversal que dans le sens longitudinal des feuilles, entre les picots en regard de deux feuilles adjacentes. En effet, suivant l'invention, on déterminera, soit par le calcul soit par l'expérience, les écartements respectifs 1 des picots suivant l'axe longitudinal yy' des feuilles 1 et 2 à enrouler pour que, lors de la phase d'enroulement, les picots 3b de la feuille supérieure et les picots 5b de la feuille inférieure se trouvent bien en regard l'un de l'autre si bien que l'écartement e des feuilles 1 et 2 est égal à la somme de la hauteur h b et H b des picots 3b et 5b qui s'étendent vers l'intérieur et que l'écartement E entre les spires est égal à la somme de la hauteur h a et H a des picots qui s'étendent vers l'extérieur.Likewise, two series of pins have been produced from sheet 2, namely pins 5a of height H a which extend from the inside towards the outside and pins 5b of height H b extend from l outside to inside. According to the invention, the spacer pins preferably have the shape of truncated cones, that is to say that they extend from the base of the sheets 1 and 2, inwards and / or inwards. outside of these and terminate in a plate 6, namely plates 6a and 6b as regards the pins produced on the sheet 1 and plates 6a 'and 6b' as regards the pins produced on the sheet 2. These plates are advantageous insofar as they make it possible to compensate for a shift which would occur, both in the transverse direction and in the longitudinal direction of the sheets, between the pins facing two adjacent sheets. In fact, according to the invention, the respective spacings 1 of the spikes along the longitudinal axis yy 'of the sheets 1 and 2 to be wound up will be determined, either by calculation or by experience, so that, during the phase of winding, the pins 3b of the upper sheet and the pins 5b of the lower sheet are facing each other so that the spacing e of the sheets 1 and 2 is equal to the sum of the height h b and H b of the pins 3b and 5b which extend inwards and that the spacing E between the turns is equal to the sum of the height h a and H has pins which extend outwards.

    Bien entendu, en fonction de l'application dévolue à l'échangeur considéré, on peut prévoir un écartement E entre les spires qui soit différent de l'écartement e qui existe entre chacune des deux feuilles 1 et 2, en donnant en conséquence aux hauteurs h et H de ces picots respectifs les valeurs souhaitées.Of course, depending on the application assigned to the exchanger under consideration, provision may be made for a spacing E between the turns which is different from the spacing e which exists between each of the two sheets 1 and 2, thereby giving the heights h and H of these respective pins the desired values.

    Ainsi que représenté sur les figures 1a et 3a on peut prévoir, dans le sens transversal des feuilles 1 et 2, des ondulations 4 qui sont orientées dans le même sens que les picots par rapport au plan des feuilles.As shown in Figures 1a and 3a we may provide, in the transverse direction of the sheets 1 and 2, corrugations 4 which are oriented in the same direction than the pins in relation to the plane of the leaves.

    Ces ondulations sont destinées à donner aux feuilles une capacité de déformation suivant leur axe longitudinal, qui permet de compenser toute variation de longueur des feuilles susceptible d'intervenir lors de l'enroulement, et notamment celles provoquées par des variations de hauteurs des différents picots situés sur un même axe sensiblement transversal. Les ondulations peuvent n'être réalisées que sur l'une des deux feuilles, et elles peuvent ne s'étendre que sur une partie de la largeur de celles-ci. These ripples are intended to give the sheets a capacity of deformation along their axis longitudinal, which compensates for any variation in length of the leaves likely to occur during winding, and in particular those caused by variations in height of the different spikes located on the same substantially transverse axis. Ripples can only be done on one of the two sheets, and they may only extend over part of the width of these.

    Bien que dans le mode de réalisation décrit, l'écartement des tôles et des enroulements soit respectivement déterminé par des picots, cet écartement pourrait être obtenu à l'aide d'autres moyens, et notamment à l'aide d'inserts ou de butées qui seraient fixées sur les feuilles 1 et 2, notamment par soudage dans le cas où ces feuilles seraient en métal ou par collage dans le cas où elles seraient en matière plastique.Although in the embodiment described, the spacing of the sheets and windings either respectively determined by pins, this spacing could be obtained by other means, and in particular using inserts or stops which would fixed on sheets 1 and 2, in particular by welding in the event that these sheets are made of metal or by collage in case they are in matter plastic.

    On pourrait également, suivant l'invention, prévoir entre les feuilles 1 et 2 des protubérances doubles, et prévoir des protubérances simples entre chacune des spires de l'enroulement ainsi que représenté sur la figure 6.One could also, according to the invention, provide protuberances between sheets 1 and 2 double, and provide single protrusions between each of the turns of the winding as shown in figure 6.

    La présente invention est également intéressante en ce qu'elle permet d'assurer un autoréglage corrigeant les variations de diamètre des spires, de hauteur de picots, de pas, qui se manifestent en cours d'enroulement. Dans un tel mode de mise en oeuvre, qui est représenté sur les figures 5 et 5a, les picots 3b et 5b sont également formés par déformation de la feuille notamment par emboutissage. Les picots ainsi réalisés sont également de forme globale tronconique, la petite base 6b, 6b' de ceux-ci, c'est-à-dire la face de contact des picots entre eux, étant toutefois inclinée d'un angle i par rapport au plan de la feuille avant son enroulement, ainsi que représenté sur la figure 5. Dans ces conditions, lorsque l'on procède à l'enroulement des différentes spires on constate, ainsi que représenté sur la figure 5a, que les picots appartenant à la surface externe de deux spires consécutives viennent en contact, par leur bases inclinées respectives 6b et 6b'. Dans ces conditions, si par suite de problèmes liés à la fabrication, notamment l'écartement des tôles augmente le diamètre de l'enroulement augmente également, si bien que le sommet du picot de la tôle extérieure 2 se trouve décalé en retrait par rapport au sommet du picot de la tôle inférieure 1 en raison de l'augmentation de la circonférence. Suivant la présente invention, la feuille extérieure 2 se rapproche alors de la feuille inférieure 1 jusqu'à ce que l'écartement devienne égal à celui qui existait en début d'enroulement.The present invention is also advantageous in that it makes it possible to ensure self-adjustment correcting the variations in diameter of the turns, height of spikes, pitches, which appear during winding. In such an embodiment, which is shown in FIGS. 5 and 5a, the pins 3b and 5b are also formed by deformation of the sheet, in particular by stamping. The pins thus produced are also of overall frustoconical shape, the small base 6b, 6b 'of these, that is to say the contact face of the pins with each other, however being inclined at an angle i relative to the plane of the sheet before winding, as shown in FIG. 5. Under these conditions, when the winding of the different turns is observed, as shown in FIG. 5a, that the pins belonging to the surface external of two consecutive turns come into contact, by their respective inclined bases 6b and 6b '. Under these conditions, if as a result of problems related to manufacturing, in particular the spacing of the sheets increases the diameter of the winding also increases, so that the top of the pin of the outer sheet 2 is offset from the top of the pin of the lower sheet 1 due to the increase in the circumference. According to the present invention, the outer sheet 2 then approaches the lower sheet 1 until the spacing becomes equal to that which existed at the start of winding.

    On notera que la pente i, formée par la petite base des picots, est suffisamment importante pour corriger rapidement les tolérances de fabrication.It will be noted that the slope i , formed by the small base of the pins, is large enough to quickly correct the manufacturing tolerances.

    Claims (6)

    1. Exchanger of spirally wound type, constituted by two imbricated fluid circuits, namely a first circuit formed by the space included between two spaced apart sheets (1, 2) which are wound on themselves and a second circuit formed by the space included between the successive turns of this winding and where:
      the two sheets (1, 2) comprise, on their respectively facing surfaces, internal spacer elements (3b, 5b) and/or on their opposite surfaces, external spacer elements (3a, 5a),
      these internal (3b, 5b) and external (3a, 5a) spacer elements are disposed, along the longitudinal axis (yy') of the sheets (1, 2), in such a manner that, once the sheets are wound, the internal (3b) and external (3a) spacer elements of one sheet (1) come into abutment on the corresponding internal (5b) and external (5a) spacer elements of the other sheet (2), characterized in that:
      the end surface of at least one of two spacer elements in abutment is substantially planar.
    2. Exchanger according to Claim 1, characterized in that it comprises, between the internal (3b, 5b) and/or external (3a, 5a) spacer elements, corrugations (4) arranged substantially transversely along at least a part of the width of the sheets (1, 2).
    3. Exchanger according to one of Claims 1 or 2, characterized in that the spacer elements (3a, 3b, 5a, 5b) are formed on the sheets (1, 2) by a process of deformation such as in particular a stamping.
    4. Exchanger according to one of the preceding Claims, characterized in that the end faces of the spacer elements are inclined with respect to the plane of the sheet on which they are implanted.
    5. Exchanger according to Claim 4, characterized in that the angle of inclination (i) of the end faces of the spacer elements (3b, 5b) with respect to the plane of the sheet is such that, during winding, the tension which is exerted on an outer sheet has the effect of causing the end face (6b, 6b') of the spacer elements (3b, 5b) of this sheet (1) to slide on the corresponding end faces of the spacer elements of an inner sheet (2).
    6. Exchanger according to one of the preceding Claims, characterized in that the spacer elements (3a, 3b, 5a, 5b) are of substantially truncated shape.
    EP01949550A 2000-06-27 2001-06-27 Exchanger with multiple spacing Expired - Lifetime EP1295077B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    FR0008247A FR2810726B1 (en) 2000-06-27 2000-06-27 MULTI-GAP SPIRAL EXCHANGER
    FR0008247 2000-06-27
    PCT/FR2001/002045 WO2002001135A1 (en) 2000-06-27 2001-06-27 Exchanger with multiple spacing

    Publications (2)

    Publication Number Publication Date
    EP1295077A1 EP1295077A1 (en) 2003-03-26
    EP1295077B1 true EP1295077B1 (en) 2003-11-05

    Family

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01949550A Expired - Lifetime EP1295077B1 (en) 2000-06-27 2001-06-27 Exchanger with multiple spacing

    Country Status (7)

    Country Link
    EP (1) EP1295077B1 (en)
    AT (1) ATE253718T1 (en)
    AU (1) AU2001270681A1 (en)
    DE (1) DE60101165T2 (en)
    ES (1) ES2210182T3 (en)
    FR (1) FR2810726B1 (en)
    WO (1) WO2002001135A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2365270A1 (en) 2010-03-08 2011-09-14 Alfa Laval Corporate AB A spiral heat exchanger

    Families Citing this family (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102004046587B4 (en) * 2004-09-23 2007-02-22 Josef Bachmaier heat exchangers
    DE102005045734B4 (en) * 2004-09-23 2010-04-29 Josef Bachmaier Heat exchanger with arranged on this conveyor
    WO2008052493A1 (en) * 2006-10-31 2008-05-08 Josef Bachmaier Compact fan, comprising a heat exchanger with integrated or attached ventilators
    DE102007027316B3 (en) * 2007-06-14 2009-01-29 Bohmann, Dirk, Dr.-Ing. Plate heat exchanger, comprises two identical heat exchanger plates, where two spiral and looping channel halves, in medium of heat exchanger, proceeds in heat exchanger plate
    CN101968329A (en) * 2010-01-07 2011-02-09 郭建文 Rib type heat exchanger
    CN102538521A (en) * 2010-12-28 2012-07-04 常州碳元科技发展有限公司 Spiral divergence highly radiating body and manufacturing method thereof
    FR2982662B1 (en) 2011-11-15 2014-01-03 Faurecia Sys Echappement SPIRAL-SHAPED EXCHANGER AND METHOD OF MANUFACTURING SUCH EXCHANGER
    US10072893B2 (en) * 2012-03-16 2018-09-11 Ateliers De Construction De Thermo-Echangeurs Sa Exchanger body and exchanger
    US10383325B2 (en) 2017-01-04 2019-08-20 Chuck Moga Rodent capturing system
    BE1026824B1 (en) * 2018-12-03 2020-07-07 Luc Prieels Heat exchange body

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    Publication number Priority date Publication date Assignee Title
    NL38532C (en) * 1934-06-09
    DE2534442A1 (en) * 1975-08-01 1977-02-10 Linde Ag HEAT EXCHANGER IN SPIRAL SHEET METAL DESIGN
    FR2596144B1 (en) * 1986-03-24 1988-05-27 Jouet Etienne SPIRAL HEAT EXCHANGER AND MANUFACTURING METHOD THEREOF
    JP3329906B2 (en) * 1993-10-29 2002-09-30 株式会社ゼクセルヴァレオクライメートコントロール Flat tubes of heat exchanger
    BR9712547A (en) * 1996-10-17 1999-10-19 Honda Motor Co Ltd Heat exchanger

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2365270A1 (en) 2010-03-08 2011-09-14 Alfa Laval Corporate AB A spiral heat exchanger
    WO2011110537A2 (en) 2010-03-08 2011-09-15 Alfa Laval Corporate Ab A spiral heat exchanger
    WO2011110537A3 (en) * 2010-03-08 2012-02-02 Alfa Laval Corporate Ab A spiral heat exchanger
    CN102782436A (en) * 2010-03-08 2012-11-14 阿尔法拉瓦尔股份有限公司 A spiral heat exchanger
    JP2013521466A (en) * 2010-03-08 2013-06-10 アルファ・ラバル・コーポレイト・エービー Spiral heat exchanger
    US8573290B2 (en) 2010-03-08 2013-11-05 Alfa Laval Corporate Ab Spiral heat exchanger
    CN102782436B (en) * 2010-03-08 2015-05-20 阿尔法拉瓦尔股份有限公司 A spiral heat exchanger

    Also Published As

    Publication number Publication date
    ATE253718T1 (en) 2003-11-15
    DE60101165D1 (en) 2003-12-11
    FR2810726A1 (en) 2001-12-28
    ES2210182T3 (en) 2004-07-01
    WO2002001135A1 (en) 2002-01-03
    FR2810726B1 (en) 2004-05-28
    AU2001270681A1 (en) 2002-01-08
    WO2002001135A9 (en) 2003-07-17
    EP1295077A1 (en) 2003-03-26
    DE60101165T2 (en) 2004-09-02

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