EP0380419A1 - Heat exchanger having spirally wound elements, and process for its manufacture - Google Patents

Heat exchanger having spirally wound elements, and process for its manufacture Download PDF

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Publication number
EP0380419A1
EP0380419A1 EP90400215A EP90400215A EP0380419A1 EP 0380419 A1 EP0380419 A1 EP 0380419A1 EP 90400215 A EP90400215 A EP 90400215A EP 90400215 A EP90400215 A EP 90400215A EP 0380419 A1 EP0380419 A1 EP 0380419A1
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EP
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Prior art keywords
section
sheet metal
ribs
spiral
heat exchanger
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EP90400215A
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German (de)
French (fr)
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EP0380419B1 (en
Inventor
Etienne Jouet
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Spirec A Responsabilite Ltee Ste
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Spirec A Responsabilite Ltee Ste
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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

Definitions

  • the present invention relates to a spiral wound body heat exchanger and its manufacturing process.
  • a first section of the sheet which comes from one end of a diameter of the flanges is smooth, while the second section of the sheet which comes from the opposite end of this diameter carries spaced bosses ensuring the 'mutual spacing of the first and second sections of sheet metal, once these coiled together in a spiral.
  • One of the spiral chambers, traversed by a first fluid, from an inlet end to an outlet end, is delimited between a turn of the second section of sheet metal and the turn of the first section of sheet metal located outside compared to the previous one.
  • the other spiral chamber, which is traversed by the second fluid between an inlet end and an outlet end is delimited by the preceding turn of the second sheet section and the turn of this second sheet section which is located at the interior compared to the previous one.
  • At least one of the two fluids passes longitudinally through the spiral chamber which associated with it and it flows into this chamber through the free intervals delimited between the bosses forming spacers between the turns of the sheet.
  • these intervals define a relatively large overall cross-section, hence a low speed of flow of the fluid through the exchanger and a relatively low efficiency of the heat exchange.
  • the present invention relates to improvements made to this type of exchanger in order to accelerate the flow speed of the fluid flowing longitudinally through it, without complicating the manufacture of the exchanger.
  • this heat exchanger comprising a spiral body delimiting two spiral chambers nested one inside the other and traversed respectively by two fluids between which the heat exchange must take place, this body comprising, in its central part , two extreme transverse closing flanges, the two spiral chambers being delimited by a single sheet passing diametrically through each end flange, a first section of the sheet, coming from one end with a diameter of the flanges, being smooth while the second section, coming from the opposite end of this same diameter, carries projections ensuring the mutual spacing of the first and second sheet metal sections once they are coiled together in a spiral, one of the spiral chambers being delimited between a turn of the second section of sheet metal and the turn of the first section of sheet metal located outside with respect to the previous one while the other c spiral chamber is delimited by this turn of the second section of sheet metal and the turn of the first section of sheet metal located inside with respect to the previous one, characterized in that the turns of the second sheet metal section have, as projections,
  • the invention also relates to a method of manufacturing a heat exchanger of this type, in which a sheet metal strip is wound in a spiral on mandrels driven in rotation, this sheet metal strip being engaged diametrically, in its middle part. , between two pairs of opposite mandrels and having, on one side of these mandrels, a first section of smooth sheet metal and on the other side of the mandrel, a second section of sheet metal provided with protrusions, characterized in that previously formed by stamping, to form the projections of the second section of the sheet metal strip, parallel ribs, spaced apart from each other in the transverse direction, extending in the longitudinal direction of the strip, each of these ribs having a corrugated edge formed by an alternating succession of hollows and bumps.
  • the heat exchanger shown in Figure 1 comprises a spiral body 1 which is constituted by the spiral winding of a single strip of sheet metal 2. This spiral winding is produced by diametrically engaging the longitudinal edges of the part median of the sheet 2 between two pairs of mandrels 3 and 4 which can be rotated in the direction of the arrow f (FIGS. 3 and 4) around a common transverse axis 5.
  • the two mandrels 3 and 4 of each pair are arranged symmetrically with respect to the axis of rotation 5 so as to delimit between them a diametral slot in which is engaged the longitudinal edge of the sheet 2.
  • Each of the mandrels 3,4 also has a peripheral surface with a straight cross section substantially in spiral.
  • the sheet metal strip 2 comprises a first smooth section 2a situated on the right side of the winding mandrels 3, 4 in FIGS. 2 to 4.
  • the sheet metal strip 2 also comprises a second section 2b, located on the left mandrels 3,4 in Figures 2 to 4 and which has, on its lower surface parallel ribs 6, extending in the longitudinal direction of the strip 2, which are intended to constitute spacers between the different turns of the spiral body 1.
  • the lower ribs 6 are formed in the second section 2b of the strip 2 during a single drawing operation.
  • each of the ribs 6 is shaped, during stamping, so as to present a ridge, not straight but wavy, which is constituted by an alternating succession of hollows 7 and bumps 8.
  • the pitch of the corrugations is small on the order of 5 to 10 mm and the spacing of the ribs 6 is on the order of 10 to 20 mm for example.
  • the two pairs of opposite mandrels 3,4 are rotated in an anticlockwise direction, according to arrow f, the strip 2 being placed flat, at the start, as well as it is shown in FIGS. 2 and 3.
  • the first section of smooth strip 2a which extends beyond the pairs of mandrels 3,4 is left free, while the second ribbed section 2b is subjected, during winding , at a tensile force F.
  • the part of the second ribbed section 2b which is close to the mandrels 3,4 is wound 180 ° on the mandrel 3, these corrugated ribs 6 being turned outwards.
  • the spiral body forms two spiral chambers A and B nested one inside the other and which are traversed respectively by the two fluids between which the heat exchange must take place.
  • the first chamber A is delimited between a turn of the second section of strip 2b, on the side opposite to that on which the ribs 6 are formed, and the turn of the first section of strip of smooth sheet metal 2a which is located outside.
  • the second chamber B through which the second fluid passes, is itself delimited by the same turn of the second section of sheet metal strip 2b carrying the ribs 6 directed outwards, and the turn of the first section of strip of smooth sheet metal 2a is found inside and which is pressed against and held by the ribs 6.
  • the heat exchanger is completed in the manner described in patent FR-A-2596144, in particular with the winding of a piece of sheet metal 10 constituting an external jacket and fitting of flanges d end 11, of the same shape as the winding mandrels 3,4, in place of these.
  • the ribs 6 carried by the section 2b of the sheet metal strip 2 have been provided with a corrugated edge in order to allow their spiral winding, which could not be obtained with ribs with rectilinear edges. A kind of "polygonal” winding is thus obtained due to the "break" of the different ribs 6 at the location of the bumps 8.

Abstract

The present invention relates to a heat exchanger with a spirally wound body and a process for manufacturing it. This exchange is characterised in that the turns of the second sheet-metal portion (2b) possess as projections parallel ribs (6) extending in the longitudinal direction of the band, each of these ribs (6) having a corrugated ridge consisting of an alternating sequence of depressions (7) and elevations (8), the elevations (8) delimiting narrow orifices (9) for the longitudinal passage of a fluid. <IMAGE>

Description

La présente invention concerne un échangeur de chaleur à corps enroulé en spirale et son procédé de fabrication.The present invention relates to a spiral wound body heat exchanger and its manufacturing process.

On connaît déjà, ainsi qu'il est décrit dans le brevet FR-A-2596144, un échangeur de chaleur de ce type comportant, à l'intérieur d'une chemise cylindrique externe, un corps spiralé délimitant deux chambres en spirale imbriquées l'une dans l'autre et parcourues respectivement par deux fluides entre lesquels doit s'effectuer l'échange de chaleur. Ce corps spiralé est fermé, à ses deux extrémités longitudinales, par des flasques transversaux. Dans cet échangeur les deux chambres en spirale sont délimitées par une seule et même tôle traversant diamétralement chaque flasque d'extrémité. Un premier tronçon de la tôle qui est issu d'une extrémité d'un diamètre des flasques, est lisse, tandis que le second tronçon de la tôle, qui est issu de l'extrémité opposée de ce diamètre, porte des bossages espacés assurant l'écartement mutuel des premier et second tronçons de tôle, une fois ceux-­ci enroulés conjointement en spirale. L'une des chambres en spirale, parcourue par un premier fluide, d'une extrémité d'entrée à une extrémité de sortie, est délimitée entre une spire du second tronçon de tôle et la spire du premier tronçon de tôle située à l'extérieur par rapport au précédent. L'autre chambre en spirale, qui est parcourue par le second fluide entre une extrémité d'entrée et une extrémité de sortie, est délimitée par la spire précédente du second tronçon de tôle et la spire de ce second tronçon de tôle qui est située à l'intérieur par rapport au précédent.We already know, as described in patent FR-A-2596144, a heat exchanger of this type comprising, inside an external cylindrical jacket, a spiral body delimiting two spiral chambers nested one inside the other and traversed respectively by two fluids between which the heat exchange must take place. This spiral body is closed, at its two longitudinal ends, by transverse flanges. In this exchanger, the two spiral chambers are delimited by a single sheet passing diametrically through each end flange. A first section of the sheet which comes from one end of a diameter of the flanges is smooth, while the second section of the sheet which comes from the opposite end of this diameter carries spaced bosses ensuring the 'mutual spacing of the first and second sections of sheet metal, once these coiled together in a spiral. One of the spiral chambers, traversed by a first fluid, from an inlet end to an outlet end, is delimited between a turn of the second section of sheet metal and the turn of the first section of sheet metal located outside compared to the previous one. The other spiral chamber, which is traversed by the second fluid between an inlet end and an outlet end, is delimited by the preceding turn of the second sheet section and the turn of this second sheet section which is located at the interior compared to the previous one.

Dans toutes les formes d'exécution de l'échangeur de chaleur tel que décrit ci-dessus, l'un au moins des deux fluides traverse longitudinalement la chambre en spirale qui lui est associée et il s'écoule dans cette chambre à travers les intervalles libres délimités entre les bossages formant entretoises entre les spires de la tôle. Or ces intervalles définissent une section de passage globale relativement importante, d'où une faible vitesse d'écoulement du fluide à travers l'échangeur et un rendement relativement faible de l'échange thermique.In all embodiments of the heat exchanger as described above, at least one of the two fluids passes longitudinally through the spiral chamber which associated with it and it flows into this chamber through the free intervals delimited between the bosses forming spacers between the turns of the sheet. However, these intervals define a relatively large overall cross-section, hence a low speed of flow of the fluid through the exchanger and a relatively low efficiency of the heat exchange.

La présente invention concerne des perfectionnements apportés à ce type d'échangeur dans le but d'accélérer la vitesse d'écoulement du fluide s'écoulant longitudinalement à travers lui, sans compliquer la fabrication de l'échangeur.The present invention relates to improvements made to this type of exchanger in order to accelerate the flow speed of the fluid flowing longitudinally through it, without complicating the manufacture of the exchanger.

A cet effet cet échangeur de chaleur comportant un corps spiralé délimitant deux chambres en spirale imbriquées l'une dans l'autre et parcourues respectivement par deux fluides entre lesquels doit s'effectuer l'échange de chaleur, ce corps comportant, dans sa partie centrale, deux flasques transversaux extrêmes de fermeture, les deux chambres en spirale étant délimitées par une seule et même tôle traversant diamétralement chaque flasque d'extrémité, un premier tronçon de la tôle, issu d'une extrémité d'un diamètre des flasques, étant lisse tandis que le second tronçon, issu de l'extrémité opposée de ce même diamètre, porte des saillies assurant l'écartement mutuel des premiers et second tronçons de tôle une fois ceux-ci enroulés conjointement en spirale, l'une des chambres en spirale étant délimitée entre une spire du second tronçon de tôle et la spire du premier tronçon de tôle située à l'extérieur par rapport au précédent tandis que l'autre chambre en spirale est délimitée par cette spire du second tronçon de tôle et la spire du premier tronçon de tôle située à l'intérieur par rapport au précédent, caractérisé en ce que les spires du second tronçon de tôle présentent, en tant que saillies, des nervures parallèles s'étendant dans le sens longitudinal de la bande, chacune de ces nervures présentant une arête ondulée constituée par une succession alternée de creux et de bosses.To this end, this heat exchanger comprising a spiral body delimiting two spiral chambers nested one inside the other and traversed respectively by two fluids between which the heat exchange must take place, this body comprising, in its central part , two extreme transverse closing flanges, the two spiral chambers being delimited by a single sheet passing diametrically through each end flange, a first section of the sheet, coming from one end with a diameter of the flanges, being smooth while the second section, coming from the opposite end of this same diameter, carries projections ensuring the mutual spacing of the first and second sheet metal sections once they are coiled together in a spiral, one of the spiral chambers being delimited between a turn of the second section of sheet metal and the turn of the first section of sheet metal located outside with respect to the previous one while the other c spiral chamber is delimited by this turn of the second section of sheet metal and the turn of the first section of sheet metal located inside with respect to the previous one, characterized in that the turns of the second sheet metal section have, as projections, parallel ribs extending in the longitudinal direction of the strip, each of these ribs having a corrugated edge formed by an alternating succession of hollows and bumps.

L'invention a également pour objet un procédé de fabrication d'un échangeur de chaleur de ce type, dans lequel on enroule en spirale une bande de tôle sur des mandrins entraînés en rotation, cette bande de tôle étant engagée diamétralement, dans sa partie médiane, entre deux paires de mandrins opposées et présentant, d'un côté de ces mandrins, un premier tronçon de tôle lisse et de l'autre côté du mandrin, un second tronçon de tôle pourvu de saillies, caractérisé en ce qu'on forme préalablement par emboutissage, pour constituer les saillies du second tronçon de la bande de tôle, des nervures parallèles, espacées les unes des autres dans le sens transversal, s'étendant suivant le sens longitudinal de la bande, chacune de ces nervures présentant une arête ondulée constituée par une succession alternée de creux et de bosses.The invention also relates to a method of manufacturing a heat exchanger of this type, in which a sheet metal strip is wound in a spiral on mandrels driven in rotation, this sheet metal strip being engaged diametrically, in its middle part. , between two pairs of opposite mandrels and having, on one side of these mandrels, a first section of smooth sheet metal and on the other side of the mandrel, a second section of sheet metal provided with protrusions, characterized in that previously formed by stamping, to form the projections of the second section of the sheet metal strip, parallel ribs, spaced apart from each other in the transverse direction, extending in the longitudinal direction of the strip, each of these ribs having a corrugated edge formed by an alternating succession of hollows and bumps.

On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel :

  • La figure 1 est une vue en coupe transversale d'un échangeur de chaleur à corps enroulé en spirale suivant l'invention.
  • La figure 2 est une vue en plan partielle de la bande de tôle destinée à constituer le corps spiralé de l'échangeur, avant l'enroulement de cette bande de tôle.
  • La figure 3 est une vue en coupe verticale et longitudinale schématique illustrant la mise en oeuvre du procédé de fabrication de l'échangeur de chaleur suivant l'invention, avant le début de l'enroulement en spirale de son corps.
  • La figure 4 est une vue en coupe verticale et longitudinale schématique illustrant le procédé de fabrication de l'échangeur au cours de la phase d'enroulement du corps spiralé.
An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing in which:
  • Figure 1 is a cross-sectional view of a spiral wound body heat exchanger according to the invention.
  • Figure 2 is a partial plan view of the sheet metal strip intended to constitute the spiral body of the exchanger, before the winding of this sheet metal strip.
  • Figure 3 is a schematic vertical and longitudinal sectional view illustrating the implementation of the method of manufacturing the heat exchanger according to the invention, before the start of the spiral winding of its body.
  • Figure 4 is a schematic vertical and longitudinal sectional view illustrating the manufacturing process of the exchanger during the winding phase of the spiral body.

L'échangeur de chaleur représenté sur la figure 1 comprend un corps spiralé 1 lequel est constitué par l'enroulement en spirale d'une seule et même bande de tôle 2. Cet enroulement en spirale est réalisé en engageant diamétralement les bords longitudinaux de la partie médiane de la tôle 2 entre deux paires de mandrins 3 et 4 qui peuvent être entraînés en rotation dans le sens de la flèche f (figures 3 et 4) autour d'un axe transversal commun 5. Les deux mandrins 3 et 4 de chaque paire sont disposés symétriquement par rapport à l'axe de rotation 5 de manière à délimiter entre eux une fente diamétrale dans laquelle est engagé le bord longitudinal de la tôle 2. Chacun des mandrins 3,4 présente par ailleurs une surface périphérique à section droite sensiblement en spirale.The heat exchanger shown in Figure 1 comprises a spiral body 1 which is constituted by the spiral winding of a single strip of sheet metal 2. This spiral winding is produced by diametrically engaging the longitudinal edges of the part median of the sheet 2 between two pairs of mandrels 3 and 4 which can be rotated in the direction of the arrow f (FIGS. 3 and 4) around a common transverse axis 5. The two mandrels 3 and 4 of each pair are arranged symmetrically with respect to the axis of rotation 5 so as to delimit between them a diametral slot in which is engaged the longitudinal edge of the sheet 2. Each of the mandrels 3,4 also has a peripheral surface with a straight cross section substantially in spiral.

Suivant l'invention la bande de tôle 2 comprend un premier tronçon lisse 2a situé du côté droit des mandrins d'enroulement 3,4 sur les figures 2 à 4. La bande de tôle 2 comprend par ailleurs un second tronçon 2b, situé à gauche des mandrins 3,4 sur les figures 2 à 4 et qui présente, sur sa surface inférieure des nervures parallèles 6, s'étendant dans le sens longitudinal de la bande 2, lesquelles sont destinées à constituer des entretoises entre les différentes spires du corps spiralé 1. Les nervures inférieures 6 sont formées dans le second tronçon 2b de la bande 2 au cours d'une seule et même opération d'emboutissage. Comme il apparaît nettement sur le dessin chacune des nervures 6 est conformée, lors de l'emboutissage, de manière à présenter une arête non pas rectiligne mais ondulée, laquelle est constituée par une succession alternée de creux 7 et de bosses 8. Le pas des ondulations est faible de l'ordre de 5 à 10 mm et l'espacement des nervures 6 est de l'ordre de 10 à 20 mm par exemple.According to the invention the sheet metal strip 2 comprises a first smooth section 2a situated on the right side of the winding mandrels 3, 4 in FIGS. 2 to 4. The sheet metal strip 2 also comprises a second section 2b, located on the left mandrels 3,4 in Figures 2 to 4 and which has, on its lower surface parallel ribs 6, extending in the longitudinal direction of the strip 2, which are intended to constitute spacers between the different turns of the spiral body 1. The lower ribs 6 are formed in the second section 2b of the strip 2 during a single drawing operation. As it clearly appears in the drawing, each of the ribs 6 is shaped, during stamping, so as to present a ridge, not straight but wavy, which is constituted by an alternating succession of hollows 7 and bumps 8. The pitch of the corrugations is small on the order of 5 to 10 mm and the spacing of the ribs 6 is on the order of 10 to 20 mm for example.

Pour la formation du corps spiralé, on entraîne en rotation les deux paires de mandrins opposés 3,4 dans le sens inverse des aiguilles d'une montre, suivant la flèche f, la bande 2 étant disposée à plat, au départ, ainsi qu'il est représenté sur les figures 2 et 3. Le premier tronçon de bande lisse 2a qui s'étend au-delà des paires de mandrins 3,4, est laissé libre, tandis que le second tronçon nervuré 2b est soumis, pendant l'enroulement, à un effort de traction F. Au début de l'enroulement la partie du second tronçon nervuré 2b qui est proche des mandrins 3,4 est enroulée sur 180° sur le mandrin 3, ces nervures ondulées 6 étant tournées vers l'extérieur. Sur ces nervures 6 formant entretoises est enroulé à son tour le premier tronçon lisse 2a de la bande de tôle 2. Ce tronçon lisse 2a prend ainsi appui uniquement sur les bosses 8 des nervures 6 et il délimite, avec ces différentes nervures 6, des ouvertures de passage 9 de section très réduite, chaque ouverture 9 étant délimitée par l'arête d'une nervure 6 et la tôle lisse 2a.For the formation of the spiral body, the two pairs of opposite mandrels 3,4 are rotated in an anticlockwise direction, according to arrow f, the strip 2 being placed flat, at the start, as well as it is shown in FIGS. 2 and 3. The first section of smooth strip 2a which extends beyond the pairs of mandrels 3,4 is left free, while the second ribbed section 2b is subjected, during winding , at a tensile force F. At the start of winding, the part of the second ribbed section 2b which is close to the mandrels 3,4 is wound 180 ° on the mandrel 3, these corrugated ribs 6 being turned outwards. On these ribs 6 forming spacers is wound in turn the first smooth section 2a of the sheet metal strip 2. This smooth section 2a is thus supported only on the bumps 8 of the ribs 6 and it defines, with these different ribs 6, openings passage 9 of very small section, each opening 9 being delimited by the edge of a rib 6 and the smooth sheet 2a.

Une fois que le corps spiralé a été totalement enroulé, comme il est représenté sur la figure 1, il forme deux chambres en spirales A et B imbriquées l'une dans l'autre et qui sont parcourues respectivement par les deux fluides entre lesquels l'échange thermique doit avoir lieu. La première chambre A est délimitée entre une spire du second tronçon de bande 2b, du côté opposé à celui où sont formées les nervures 6, et la spire du premier tronçon de bande de tôle lisse 2a qui se trouve à l'extérieur. La seconde chambre B traversée par le second fluide, est, elle, délimitée par la même spire du second tronçon de bande de tôle 2b portant les nervures 6 dirigées vers l'extérieur, et la spire du premier tronçon de bande de tôle lisse 2a se trouvant à l'intérieur et qui est appliquée contre et maintenue par les nervures 6.Once the spiral body has been completely wound up, as shown in FIG. 1, it forms two spiral chambers A and B nested one inside the other and which are traversed respectively by the two fluids between which the heat exchange must take place. The first chamber A is delimited between a turn of the second section of strip 2b, on the side opposite to that on which the ribs 6 are formed, and the turn of the first section of strip of smooth sheet metal 2a which is located outside. The second chamber B through which the second fluid passes, is itself delimited by the same turn of the second section of sheet metal strip 2b carrying the ribs 6 directed outwards, and the turn of the first section of strip of smooth sheet metal 2a is found inside and which is pressed against and held by the ribs 6.

A la fin de l'enroulement l'échangeur de chaleur est achevé de la façon décrite dans le brevet FR-A-2596144, notamment avec l'enroulement d'un morceau de tôle 10 constituant une chemise externe et mise en place de flasques d'extrémité 11, de même forme que les mandrins d'enroulement 3,4, à la place de ceux-ci.At the end of the winding, the heat exchanger is completed in the manner described in patent FR-A-2596144, in particular with the winding of a piece of sheet metal 10 constituting an external jacket and fitting of flanges d end 11, of the same shape as the winding mandrels 3,4, in place of these.

Les nervures 6 que porte le tronçon 2b de la bande de tôle 2 ont été prévues avec une arête ondulée afin de permettre leur enroulement en spirale, ce qui ne pourrait être obtenu avec des nervures à arêtes rectilignes. On obtient ainsi une sorte d'enroulement "polygonal" dû à la "cassure" des différentes nervures 6 à l'endroit des bosses 8.The ribs 6 carried by the section 2b of the sheet metal strip 2 have been provided with a corrugated edge in order to allow their spiral winding, which could not be obtained with ribs with rectilinear edges. A kind of "polygonal" winding is thus obtained due to the "break" of the different ribs 6 at the location of the bumps 8.

Claims (5)

1.- Echangeur de chaleur comportant un corps spiralé délimitant deux chambres en spirale (A,B) imbriquées l'une dans l'autre et parcourues respectivement par deux fluides entre lesquels doit s'effectuer l'échange de chaleur, ce corps comportant, dans sa partie centrale, deux flasques transversaux extrêmes de fermeture (12), les deux chambres en spirale (A,B) étant délimitées par une seule et même tôle (2) traversant diamétralement chaque flasque d'extrémité (12), un premier tronçon (2a) de la tôle (2), issu d'une extrémité d'un diamètre des flasques (12), étant lisse tandis que le second tronçon (2b), issu de l'extrémité opposée de ce même diamètre, porte des saillies assurant l'écartement mutuel des premiers et second tronçons de tôle (2a,2b) une fois ceux-ci enroulés conjointement en spirale, l'une des chambres en spirale (A) étant délimitée entre une spire du second tronçon de tôle (2b) et la spire du premier tronçon de tôle (2a) située à l'extérieur par rapport au précédent tandis que l'autre chambre en spirale (B) est délimitée par cette spire du second tronçon de tôle (2b) et la spire du premier tronçon de tôle (2a) située à l'intérieur par rapport au précédent, caractérisé en ce que les spires du second tronçon de tôle (2b) présentent, en tant que saillies, des nervures parallèles (6) s'étendant dans le sens longitudinal de la bande, chacune de ces nervures (6) ayant une arête ondulée constituée par une succession alternée de creux (7) et de bosses (8), les bosses (8) délimitant des ouvertures étroites (9) pour le passage longitudinal d'un fluide.1.- Heat exchanger comprising a spiral body delimiting two spiral chambers (A, B) nested one inside the other and traversed respectively by two fluids between which the heat exchange must take place, this body comprising, in its central part, two extreme transverse closing flanges (12), the two spiral chambers (A, B) being delimited by a single sheet (2) diametrically passing through each end flange (12), a first section (2a) of the sheet (2), coming from one end of a diameter of the flanges (12), being smooth while the second section (2b), coming from the opposite end of this same diameter, carries projections ensuring the mutual spacing of the first and second sections of sheet metal (2a, 2b) once they are wound together in a spiral, one of the spiral chambers (A) being delimited between a turn of the second section of sheet metal (2b) and the turn of the first section of sheet metal (2a) located outside laughing with respect to the previous one while the other spiral chamber (B) is delimited by this turn of the second sheet metal section (2b) and the turn of the first sheet metal section (2a) situated inside with respect to the previous one, characterized in that the turns of the second section of sheet metal (2b) have, as projections, parallel ribs (6) extending in the longitudinal direction of the strip, each of these ribs (6) having a corrugated edge formed by an alternating succession of hollows (7) and bumps (8), the bumps (8) delimiting narrow openings (9) for the longitudinal passage of a fluid. 2.- Echangeur de chaleur suivant la revendication 1 caractérisé en ce que les nervures (6) sont en saillie vers l'intérieur.2.- Heat exchanger according to claim 1 characterized in that the ribs (6) project inwardly. 3.- Echangeur de chaleur suivant l'une quelconque des revendications précédentes caractérisé en ce que le pas des ondulations est de l'ordre de 5 à 10 mm et l'espacement des nervures est de l'ordre de 10 à 20 mm environ.3.- Heat exchanger according to any one of the preceding claims, characterized in that the pitch of the corrugations is of the order of 5 to 10 mm and the spacing of the ribs is of the order of approximately 10 to 20 mm. 4.- Procédé de fabrication d'un échangeur de chaleur suivant l'une quelconque des revendications précédentes, dans lequel on enroule en spirale une bande de tôle (2) sur des mandrins (3,4) entraînés en rotation, cette bande de tôle (2) étant engagée diamétralement, dans sa partie médiane, entre deux paires de mandrins (3,4) opposées et présentant, d'un côté de ces mandrins, un premier tronçon de tôle lisse (2a) et de l'autre côté du mandrin (3,4), un second tronçon de tôle (2b) pourvu de saillies, caractérisé en ce qu'on forme préalablement par emboutissage, pour constituer les saillies du second tronçon (2b) de la bande de tôle (2), des nervures (6) parallèles, espacées les unes des autres dans le sens transversal, s'étendant suivant le sens longitudinal de la bande, chacune de ces nervures (6) présentant une arête ondulée constituée par une succession alternée de creux (7) et de bosses (8).4. A method of manufacturing a heat exchanger according to any one of the preceding claims, in which a sheet metal strip (2) is spirally wound on mandrels (3,4) driven in rotation, this sheet metal strip. (2) being diametrically engaged, in its middle part, between two pairs of opposite mandrels (3,4) and having, on one side of these mandrels, a first section of smooth sheet metal (2a) and on the other side of the mandrel (3,4), a second section of sheet metal (2b) provided with projections, characterized in that a stamping is formed beforehand to form the projections of the second section (2b) of the sheet metal strip (2) ribs (6) parallel, spaced from each other in the transverse direction, extending in the longitudinal direction of the strip, each of these ribs (6) having a corrugated edge formed by an alternating succession of hollows (7) and dents (8). 5.- Procédé suivant la revendication 4 caractérisé en ce qu'on forme sur le second tronçon de tôle (2b) des nervures (6) qui, après enroulement en spirale sur les mandrins (3,4), se trouvent être en saillie vers l'extérieur.5.- Method according to claim 4 characterized in that forms on the second section of sheet metal (2b) ribs (6) which, after spiral winding on the mandrels (3,4), are found to project towards outside.
EP19900400215 1989-01-25 1990-01-24 Heat exchanger having spirally wound elements, and process for its manufacture Expired - Lifetime EP0380419B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900903A FR2642153B1 (en) 1989-01-25 1989-01-25 HEAT EXCHANGER WITH SPIRAL WOUND BODY AND MANUFACTURING METHOD THEREOF
FR8900903 1989-01-25

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EP0380419A1 true EP0380419A1 (en) 1990-08-01
EP0380419B1 EP0380419B1 (en) 1993-01-07

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EP (1) EP0380419B1 (en)
DE (1) DE69000712T2 (en)
FR (1) FR2642153B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338450A (en) * 1993-06-28 1994-08-16 Uop Spiral-wound adsorber module
EP1114975A2 (en) 2000-01-07 2001-07-11 Renzmann + Grünewald GmbH Spiral heat exchanger
EP1180656A1 (en) 2000-08-18 2002-02-20 Renzmann + Grünewald GmbH Spiral heat exchanger
US6644391B1 (en) * 1999-09-20 2003-11-11 Alfa Laval Ab Spiral heat exchanger
US7600316B2 (en) 2003-08-12 2009-10-13 Rolls-Royce Plc Heat exchanger and a method of manufacturing a heat exchanger
FR3020868A1 (en) * 2014-05-07 2015-11-13 Faurecia Sys Echappement SPIRAL HEAT EXCHANGER AND METHOD FOR MANUFACTURING THE SAME
US11060796B2 (en) 2016-06-09 2021-07-13 Fluid Handling Llc 3D spiral heat exchanger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607027B2 (en) * 2001-04-05 2003-08-19 Modine Manufacturing Company Spiral fin/tube heat exchanger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313650A1 (en) * 1975-06-05 1976-12-31 Bertin & Cie COMPACT HEAT EXCHANGER FOR FLUIDS
GB2156961A (en) * 1984-04-05 1985-10-16 Apv Int Ltd Spiral heat exchanger
EP0239490B1 (en) * 1986-03-24 1989-10-04 Etienne Jouet Spiral heat exchanger and method of making it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313650A1 (en) * 1975-06-05 1976-12-31 Bertin & Cie COMPACT HEAT EXCHANGER FOR FLUIDS
GB2156961A (en) * 1984-04-05 1985-10-16 Apv Int Ltd Spiral heat exchanger
EP0239490B1 (en) * 1986-03-24 1989-10-04 Etienne Jouet Spiral heat exchanger and method of making it

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338450A (en) * 1993-06-28 1994-08-16 Uop Spiral-wound adsorber module
US6644391B1 (en) * 1999-09-20 2003-11-11 Alfa Laval Ab Spiral heat exchanger
EP1114975A2 (en) 2000-01-07 2001-07-11 Renzmann + Grünewald GmbH Spiral heat exchanger
EP1114975A3 (en) * 2000-01-07 2002-03-27 Renzmann + Grünewald GmbH Spiral heat exchanger
EP1180656A1 (en) 2000-08-18 2002-02-20 Renzmann + Grünewald GmbH Spiral heat exchanger
US7600316B2 (en) 2003-08-12 2009-10-13 Rolls-Royce Plc Heat exchanger and a method of manufacturing a heat exchanger
US7918268B2 (en) 2003-08-12 2011-04-05 Rolls-Royce Plc Heat exchanger
FR3020868A1 (en) * 2014-05-07 2015-11-13 Faurecia Sys Echappement SPIRAL HEAT EXCHANGER AND METHOD FOR MANUFACTURING THE SAME
US11060796B2 (en) 2016-06-09 2021-07-13 Fluid Handling Llc 3D spiral heat exchanger

Also Published As

Publication number Publication date
EP0380419B1 (en) 1993-01-07
DE69000712T2 (en) 1993-07-29
FR2642153A1 (en) 1990-07-27
FR2642153B1 (en) 1991-06-07
DE69000712D1 (en) 1993-02-18

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