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EP0145574B1 - Method of crimping a heat exchanger end plate onto a header box - Google Patents

Method of crimping a heat exchanger end plate onto a header box Download PDF

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Publication number
EP0145574B1
EP0145574B1 EP84402394A EP84402394A EP0145574B1 EP 0145574 B1 EP0145574 B1 EP 0145574B1 EP 84402394 A EP84402394 A EP 84402394A EP 84402394 A EP84402394 A EP 84402394A EP 0145574 B1 EP0145574 B1 EP 0145574B1
Authority
EP
European Patent Office
Prior art keywords
header box
end plate
openings
holes
tube end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84402394A
Other languages
German (de)
French (fr)
Other versions
EP0145574A2 (en
EP0145574A3 (en
Inventor
Michel Allemandou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chausson Usines SA
Original Assignee
Chausson Usines SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chausson Usines SA filed Critical Chausson Usines SA
Publication of EP0145574A2 publication Critical patent/EP0145574A2/en
Publication of EP0145574A3 publication Critical patent/EP0145574A3/en
Application granted granted Critical
Publication of EP0145574B1 publication Critical patent/EP0145574B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/454—Heat exchange having side-by-side conduits structure or conduit section
    • Y10S165/471—Plural parallel conduits joined by manifold
    • Y10S165/473—Plural parallel conduits joined by manifold with clamping member at joint between header plate and header tank
    • Y10S165/474—Plural parallel conduits joined by manifold with clamping member at joint between header plate and header tank with compressible seal at joint
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49892—Joining plate edge perpendicularly to frame
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5188—Radiator making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/49—Member deformed in situ
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/49—Member deformed in situ
    • Y10T403/4983—Diverse resistance to lateral deforming force

Definitions

  • the present invention relates to a new method for crimping a water box into a header plate of a heat exchanger so that the water box compresses a deformable seal which must ensure a perfect seal between the header plate and the water box .
  • the crimping of the water box is most often carried out by means of tabs which project from the peripheral rising edge of the collecting plate, these tabs being folded over a projecting rim which the water box has.
  • FR-A-2 050 306 a water box-collector plate connection by providing stapling members projecting into the peripheral edge of the water box and by engaging these stapling members in lights on the rising edge of the collector plate. Similar arrangements have also been described in FR-A-2 443 602.
  • FR-A-2 524 977 describes in one embodiment the fact of forming stampings near the upper end of lugs which extend the rising edge of the collector plate so that these stampings form stops for the peripheral edge of the water box.
  • This arrangement requires that the stampings be formed after the water box has been put in place and while it is tightened on the joint which must seal between it and the collector plate.
  • the tools required are complicated because it is also necessary to provide a leg retaining part when the stamping tool is working and the space for placing a retaining tool is so small that it is practically impossible to produce such a tool.
  • the present invention relates to an embodiment which makes it possible to obtain the same advantageous results as those obtained by the introduction of protruding stapling members of the water box into the openings of the rising edge of the collecting plate while allowing easy placement of the water box, regardless of the nature of the metal which constitutes the collecting plate.
  • the method for crimping a header plate of a heat exchanger on a water box in which there is provided a peripheral rising edge to fit an extra thickness delimited by the water box and a flexible deformable seal between the water box and a groove formed by the collector plate is characterized in that protruding undulations are formed above a line of least resistance in the edge, these undulations leaving segments free between them, in that 'the rising edge is placed in a tool having crimping walls whose spacing corresponds to the spacing of the external face of the different plane sides of the rising edges of the collector plate, so that it is placed in the groove of the collector plate the deformable seal, in that the water box is placed so that a heel which it presents bears on said seal, and in that one exerts pressure on the water box causing the seal is first deformed then that the projecting undulations and the segments placed between them are then folded down towards an edge of the water box at the same time as the deformable seal continues to be maintained under pressure.
  • 1 denotes a water box of a heat exchanger.
  • the box 1 is made of molded material, for example synthetic material or metal, and delimits, at its lower part, an extra thickness 2 forming on its bottom a heel 3 and on its top a rim 4.
  • the drawing shows that the extra thickness 2 is formed over the entire periphery of the water box.
  • the water box is intended to cover a metal collecting plate 5 into which open tubes 6 which are tightly connected thereto and between which are, for example, heat sinks 7.
  • the collecting plate defines a groove over its entire periphery or gutter 8.
  • the peripheral rising edge 9 of the collector plate has, substantially at the position which the rim 4 of the water box must occupy, holes or openings 10 intended to create a line of least resistance designated by 11 in the drawing.
  • Corrugations 12 are formed above the line of least resistance 11, these corrugations leaving free between them segments 13 which lie in the same vertical plane as that passing through the internal face of the rising edge 9.
  • Figs. 2 and 3 thus show that the corrugations 12 leave the groove 8 formed by the collector plate completely free, which allows an easy installation of the additional thickness 2 of the water box 1 in the groove 8 after having disposed there a flexible seal. deformable 14.
  • the existence of the corrugations 12 has the effect of stiffening the upper part of the rising edge 9 above the line of least resistance 11.
  • the height of crimp walls 18 is greater than the height of the rising edge 9 of the collector plate.
  • the collector plate to which the tubes 6 and dissipators 7 are fixed is engaged in the tool 15 until the corrugations 12 abut against the top 19 of the tool.
  • the holes or openings 10 delimiting the line 11 of least resistance cover the lateral edge of the rim 4 which is thus partially at least embedded while the segments 13 are folded over the top of said rim 4.
  • Figs. 4 and 8 illustrate a slight variant according to which notches 20 are formed in the rim 4 to delimit, between them, teeth 21 which coincide with the holes 10 of the collector plate. It is advantageous that the holes 10 have a diameter or a width if they are oblong, rectangular or trapezoidal (FIG. 8) greater than the width of the teeth 21 to compensate for the manufacturing tolerances existing between the water box and the collector plate .
  • the line of least resistance 11. is then situated substantially at the level of the base of the teeth 21.
  • the slots or notches 22 can be replaced by corrugations which are tightened at the time of crimping.
  • the line of least resistance can be delimited other than by lights; it is possible that it is formed by a thinned part, for example a continuous or discontinuous groove of the collector plate. It is also possible that the lights are connected by a part of less resistance, particularly when the water box forms teeth 21.

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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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Description

La présente invention concerne un nouveau procédé pour le sertissage d'une boîte à eau dans une plaque collectrice d'un échangeur de chaleur faisant que la boîte à eau comprime un joint déformable devant assurer une étanchéité parfaite entre la plaque collectrice et la boîte à eau.The present invention relates to a new method for crimping a water box into a header plate of a heat exchanger so that the water box compresses a deformable seal which must ensure a perfect seal between the header plate and the water box .

Dans la technique connue, le sertissage de la boîte à eau est le plus souvent réalisé au moyen de pattes qui font saillie du bord montant périphérique de la plaque collectrice, ces pattes étant repliées sur un rebord saillant que présente la boîte à eau.In the known technique, the crimping of the water box is most often carried out by means of tabs which project from the peripheral rising edge of the collecting plate, these tabs being folded over a projecting rim which the water box has.

La technique ci-dessus est notamment mise en oeuvre dans le FR-A-2 422 921, dans le FR-A-2 524 977 ainsi que dans le FR-A-1 039911. Dans certains cas, les pattes repliées sont renforcées par des nervures. C'est l'objet du EP-A-0 054 815.The above technique is used in particular in FR-A-2 422 921, in FR-A-2 524 977 as well as in FR-A-1 039911. In some cases, the folded legs are reinforced by ribs. This is the object of EP-A-0 054 815.

Cette disposition très utilisée présente l'inconvénient que les pattes travaillent à la flexion et qu'au moment de leur pliage elles peuvent, dans certains cas, produire des déformations du bord montant de la plaque collectrice à partir duquel elles font saillie, ces déformations pouvant nuire à l'étanchéité entre ladite plaque collectrice et la boîte à eau.This widely used arrangement has the drawback that the tabs work on bending and that, when folded, they can, in certain cases, produce deformations of the rising edge of the collector plate from which they protrude, these deformations being able to affect the seal between said collector plate and the water box.

Pour remédier à cet inconvénient, la Demanderesse a proposé de réaliser dans le FR-A-2 050 306 une liaison boîte à eau-plaque collectrice en prévoyant des organes d'agrafage saillant dans le bord périphérique de la boîte à eau et en engageant ces organes d'agrafage dans des lumières du bord montant de la plaque collectrice. Des dispositions analogues ont encore été décrites dans le FR-A-2 443 602.To remedy this drawback, the Applicant has proposed in FR-A-2 050 306 a water box-collector plate connection by providing stapling members projecting into the peripheral edge of the water box and by engaging these stapling members in lights on the rising edge of the collector plate. Similar arrangements have also been described in FR-A-2 443 602.

Cette disposition est satisfaisante car le métal travaille à la traction mais la mise en place de la boîte à eau pose quelquefois des problèmes relativement délicats. En effet, selon la nature du métal de la plaque collectrice, il est possible, si ce métal est élastique, de réaliser un emboîtage par encliquetage mais, si le métal n'est pas élastique, il y a lieu tout d'abord d'évaser le bord montant de la plaque collectrice puis de le resserrer contre la boîte à eau tout en maintenant cette boîte à eau sous pression.This arrangement is satisfactory because the metal works under tension, but the installation of the water box sometimes poses relatively delicate problems. Indeed, depending on the nature of the metal of the collector plate, it is possible, if this metal is elastic, to carry out a snap fitting but, if the metal is not elastic, it is first of all necessary to flare the rising edge of the collector plate then tighten it against the water box while keeping this water box under pressure.

Le FR-A-2 524 977 a décrit dans une réalisation le fait de former des emboutis près de l'extrémité supérieure de pattes qui prolongent le bord montant de la plaque collectrice de façon que ces emboutis forment des butées pour le rebord périphérique de la boîte à eau. Cette disposition nécessite que les emboutis soient formés après que la boîte à eau ait été mise en place et pendant qu'elle est serrée sur le joint devant assurer l'étanchéité entre elle et la plaque collectrice. L'outillage nécessaire est compliqué car il faut aussi prévoir une partie de retenue des pattes lorsque l'outil d'emboutissage travaille et l'espace pour placer un outil de retenue est si faible qu'il est pratiquement impossible de réaliser un tel outil.FR-A-2 524 977 describes in one embodiment the fact of forming stampings near the upper end of lugs which extend the rising edge of the collector plate so that these stampings form stops for the peripheral edge of the water box. This arrangement requires that the stampings be formed after the water box has been put in place and while it is tightened on the joint which must seal between it and the collector plate. The tools required are complicated because it is also necessary to provide a leg retaining part when the stamping tool is working and the space for placing a retaining tool is so small that it is practically impossible to produce such a tool.

La présente invention concerne une réalisation qui permet d'obtenir les mêmes résultats avantageux que ceux que procure l'introduction d'organes d'agrafage saillant de la boîte à eau dans des lumières du bord montant de la plaque collectrice tout en permettant une mise en place facile de la boîte à eau, quelle que soit la nature du métal qui constitue la plaque collectrice.The present invention relates to an embodiment which makes it possible to obtain the same advantageous results as those obtained by the introduction of protruding stapling members of the water box into the openings of the rising edge of the collecting plate while allowing easy placement of the water box, regardless of the nature of the metal which constitutes the collecting plate.

Conformément à l'invention, le procédé pour le sertissage d'une plaque collectrice d'un échangeur de chaleur sur une boîte à eau dans lequel on prévoit un bord montant périphérique pour emboîter une surépaisseur que délimite la boîte à eau et un joint souple déformable entre la boîte à eau et une gorge formée par la plaque collectrice est caractérisé en ce qu'on forme des ondulations saillantes au-dessus d'une ligne de moindre résistance dans le bord, ces ondulations laissant libres entre elles des segments, en ce qu'on place le bord montant dans un outil présentant des parois de sertissage dont l'écartement correspond à l'écartement de la face externe des différents côtés plans des bords montants de la plaque collectrice, en ce qu'on met en place dans la gorge de la plaque collectrice le joint déformable, en ce qu'on place la boîte à eau pour qu'un talon qu'elle présente porte sur ledit joint, et en ce qu'on exerce une pression sur la boîte à eau faisant que le joint est tout d'abord déformé puis que les ondulations saillantes et les segments placés entre elles sont ensuites rabattus vers un rebord de la boîte à eau en même temps que le joint déformable continue à être maintenu sous pression.According to the invention, the method for crimping a header plate of a heat exchanger on a water box in which there is provided a peripheral rising edge to fit an extra thickness delimited by the water box and a flexible deformable seal between the water box and a groove formed by the collector plate is characterized in that protruding undulations are formed above a line of least resistance in the edge, these undulations leaving segments free between them, in that 'the rising edge is placed in a tool having crimping walls whose spacing corresponds to the spacing of the external face of the different plane sides of the rising edges of the collector plate, so that it is placed in the groove of the collector plate the deformable seal, in that the water box is placed so that a heel which it presents bears on said seal, and in that one exerts pressure on the water box causing the seal is first deformed then that the projecting undulations and the segments placed between them are then folded down towards an edge of the water box at the same time as the deformable seal continues to be maintained under pressure.

Des formes de réalisation de l'objet de l'invention sont représentées au dessin annexé.

  • La figure 1 est une perspective partielle, en partie éclatée, d'un échangeur de chaleur faisant application de l'invention.
  • La figure 2 est une coupe vue sensiblement suivant la ligne II-II de la fig. 1.
  • La figure 3 est une coupe vue sensiblement suivant la ligne III-III de la fig. 1.
  • La figure 4 est une perspective partielle, analogue à la fig.1, illustrant une caractéristique supplémentaire.
  • La figure 5 est une coupe transversale schématique montrant une position particulière d'une plaque collectrice de l'échangeur et de la boîte à eau avant l'exécution d'une passe de travail.
  • La figure 6 est une coupe schématique illustrant la passe de travail par laquelle la plaque collectrice est sertie sur la boîte à eau.
  • La figure 7 est une coupe transversale, analogue à la fig. 5, montrant la relation entre la plaque collectrice et la boîte à eau après sertissage.
  • La figure 8 est une perspective d'une variante.
Embodiments of the object of the invention are shown in the accompanying drawing.
  • Figure 1 is a partial perspective, partly exploded, of a heat exchanger applying the invention.
  • FIG. 2 is a section seen substantially along line II-II of FIG. 1.
  • Figure 3 is a section seen substantially along line III-III of FIG. 1.
  • Figure 4 is a partial perspective, similar to Fig.1, illustrating an additional feature.
  • Figure 5 is a schematic cross section showing a particular position of a header plate of the exchanger and the water box before the execution of a work pass.
  • Figure 6 is a schematic section illustrating the working pass by which the collector plate is crimped on the water box.
  • FIG. 7 is a cross section, similar to FIG. 5, showing the relationship between the collector plate and the water box after crimping.
  • Figure 8 is a perspective of a variant.

Au dessin, 1 désigne une boîte à eau d'un échangeur de chaleur. La boîte 1 est en matière moulée, par exemple en matière synthétique ou en métal, et délimite, à sa partie basse, une surépaisseur 2 formant sur son dessous un talon 3 et sur son dessus un rebord 4. Le dessin montre que la surépaisseur 2 est formée sur toute la périphérie de la boîte à eau.In the drawing, 1 denotes a water box of a heat exchanger. The box 1 is made of molded material, for example synthetic material or metal, and delimits, at its lower part, an extra thickness 2 forming on its bottom a heel 3 and on its top a rim 4. The drawing shows that the extra thickness 2 is formed over the entire periphery of the water box.

La boîte à eau est destinée à recouvrir une plaque collectrice 5 en métal dans laquelle débouchent des tubes 6 qui y sont reliées de façon étanche et entre lesquels sont, par exemple, disposés des dissipateurs 7. La plaque collectrice délimite sur toute sa périphérie une gorge ou gouttière 8.The water box is intended to cover a metal collecting plate 5 into which open tubes 6 which are tightly connected thereto and between which are, for example, heat sinks 7. The collecting plate defines a groove over its entire periphery or gutter 8.

Le bord montant périphérique 9 de la plaque collectrice présente, sensiblement au niveau de la position que doit occuper le rebord 4 de la boîte à eau, des trous ou lumières 10 destinés à créer une ligne de moindre résistance désignée par 11 au dessin.The peripheral rising edge 9 of the collector plate has, substantially at the position which the rim 4 of the water box must occupy, holes or openings 10 intended to create a line of least resistance designated by 11 in the drawing.

Des ondulations 12 sont formées au-dessus de la ligne de moindre résistance 11, ces ondulations laissant libres entre elles des segments 13 qui se trouvent dans le même plan vertical que celui passant par la face interne du bord montant 9.Corrugations 12 are formed above the line of least resistance 11, these corrugations leaving free between them segments 13 which lie in the same vertical plane as that passing through the internal face of the rising edge 9.

Les fig. 2 et 3 montrent ainsi que les ondulations 12 laissent complètement libre la gorge 8 formée par la plaque collectrice, ce qui permet une mise en place facile de la surépaisseur 2 de la boîte à eau 1 dans la gorge 8 après y avoir disposé un joint souple déformable 14. L'existence des ondulations 12 a pour effet de rigidifier la partie supérieure du bord montant 9 au-dessus de la ligne de moindre résistance 11.Figs. 2 and 3 thus show that the corrugations 12 leave the groove 8 formed by the collector plate completely free, which allows an easy installation of the additional thickness 2 of the water box 1 in the groove 8 after having disposed there a flexible seal. deformable 14. The existence of the corrugations 12 has the effect of stiffening the upper part of the rising edge 9 above the line of least resistance 11.

Pour sertir la plaque collectrice 5 sur la boîte à eau, on met en oeuvre un outil désigné dans son ensemble par 15 à la fig. 6, cet outil délimitant un passage 16 pour les tubes 6 et dissipateurs 7 et formant, à sa partie supérieure, un épaulement 17 au-dessus duquel s'étendent des parois de sertissage 18. La hauteur des parois de sertissage 18 est plus grande que la hauteur du bord montant 9 de la plaque collectrice.To crimp the collector plate 5 on the water box, a tool designated as a whole by 15 in FIG. 6, this tool delimiting a passage 16 for the tubes 6 and dissipators 7 and forming, at its upper part, a shoulder 17 above which extend crimp walls 18. The height of crimp walls 18 is greater than the height of the rising edge 9 of the collector plate.

Comme l'illustre le dessin, la plaque collectrice à laquelle sont fixés les tubes 6 et dissipateurs 7 est engagée dans l'outil 15 jusqu'au moment où les ondulations 12 viennent buter contre le dessus 19 de l'outil.As illustrated in the drawing, the collector plate to which the tubes 6 and dissipators 7 are fixed is engaged in the tool 15 until the corrugations 12 abut against the top 19 of the tool.

On met alors en place, si ce n'est déjà fait, le joint souple 14 dans la gorge 8 de la plaque collectrice puis on engage la boîte à eau 1 de manière que le talon 3 qu'elle présente vienne en appui sur le joint 14. On exerce ensuite sur la boîte à eau 1 une pression dirigée suivant la flèche fi. Cette pression a tout d'abord pour effet de comprimer le joint 14 dans le fond de la gorge 8 puis la pression continuant à s'exercer il se produit une déformation progressive de la partie du bord montant 9 à la hauteur de la ligne de moindre résistance 11. Cette déformation est provoquée par les ondulations 12 qui glissent le long des parois de sertissage 18 et font donc basculer les segments 13 vers le dessus du rebord 4. La déformation se produit jusqu'au moment où la paroi externe des ondulations 12 est amenée dans un plan sensiblement vertical. Les ondulations 12 ont ainsi un effet de came.Then put in place, if not already done, the flexible seal 14 in the groove 8 of the collector plate and then engage the water box 1 so that the heel 3 that it presents comes to bear on the seal 14. Next, the pressure on the water box 1 is directed along the arrow f i . This pressure has first of all the effect of compressing the seal 14 in the bottom of the groove 8 then the pressure continuing to be exerted there is a progressive deformation of the part of the rising edge 9 at the height of the line of least resistance 11. This deformation is caused by the corrugations 12 which slide along the crimping walls 18 and therefore cause the segments 13 to tilt towards the top of the flange 4. The deformation occurs until the external wall of the corrugations 12 is brought into a substantially vertical plane. The corrugations 12 thus have a cam effect.

Dans cette disposition, les trous ou lumières 10 délimitant la ligne 11 de moindre résistance coiffent le bord latéral du rebord 4 qui est ainsi partiellement au moins encastré tandis que les segments 13 sont repliés sur le dessus dudit rebord 4.In this arrangement, the holes or openings 10 delimiting the line 11 of least resistance cover the lateral edge of the rim 4 which is thus partially at least embedded while the segments 13 are folded over the top of said rim 4.

Les fig. 4 et 8 illustrent une légère variante selon laquelle des encoches 20 sont pratiquées dans le rebord 4 pour délimiter, entre elles, des dents 21 qui coïncident avec les trous 10 de la plaque collectrice. Il est avantageux que les trous 10 présentent un diamètre ou une largeur s'ils sont oblongs, rectangulaires ou trapézoïdaux (fig.8) supérieurs à la largeur des dents 21 pour compenser les tolérances de fabrication existant entre la boîte à eau et la plaque collectrice. La ligne de moindre résistance 11. se situe alors sensiblement au niveau de la base des dents 21.Figs. 4 and 8 illustrate a slight variant according to which notches 20 are formed in the rim 4 to delimit, between them, teeth 21 which coincide with the holes 10 of the collector plate. It is advantageous that the holes 10 have a diameter or a width if they are oblong, rectangular or trapezoidal (FIG. 8) greater than the width of the teeth 21 to compensate for the manufacturing tolerances existing between the water box and the collector plate . The line of least resistance 11. is then situated substantially at the level of the base of the teeth 21.

Etant donné que les dents 21 coïncident avec les trous 10 en fin d'opération de sertissage, lesdites dents sont insérées dans les trous 10 et, par conséquent, la liaison par encastrement est encore renforcée.Since the teeth 21 coincide with the holes 10 at the end of the crimping operation, said teeth are inserted into the holes 10 and, consequently, the connection by embedding is further reinforced.

Bien que cela ne soit pas nécessaire, il est avantageux pour faciliter l'opération de sertissage de prévoir des fentes ou encoches 22, par exemple aux quatre angles du bord montant 9 de la plaque collectrice.Although this is not necessary, it is advantageous to facilitate the crimping operation to provide slots or notches 22, for example at the four corners of the rising edge 9 of the collector plate.

Les fentes ou encoches 22 peuvent être remplacées par des ondulations qui sont resserrées au moment du sertissage. De même la ligne de moindre résistance peut être délimitée autrement que par des lumières ; il est possible qu'elle soit formée par une partie amincie, par exemple une rainure continue ou discontinue de la plaque collectrice. Il est possible aussi que des lumières soient reliées par une partie de moindre résistance, particulièrement lorsque la boîte à eau forme des dents 21.The slots or notches 22 can be replaced by corrugations which are tightened at the time of crimping. Likewise the line of least resistance can be delimited other than by lights; it is possible that it is formed by a thinned part, for example a continuous or discontinuous groove of the collector plate. It is also possible that the lights are connected by a part of less resistance, particularly when the water box forms teeth 21.

Claims (4)

1. Method for crimping a tube end plate of a heat exchanger on a header box wherein there is provided a peripheral upright edge for encasing an overthickness that delimits the header box and a deformable flexible gasket between the header box and a groove formed by the tube end plate, characterized in that protruding waves (12) are formed above a line of lesser resistance (11) in the edge (9), these waves letting free segments (13) therebetween, in that the upright edge (9) is placed in a tool (15) provided with crimping walls (18) the spacing of which corresponds to the spacing of the outer face of the various plane sides of the upright edges (9) of the tube end plate (5), in that the deformable gasket (14) is positioned into the groove (8) of the tube end plate, in that the header box (1) is placed so that a heel (3) that it has will bear on said gasket, and in that a pressure is exerted on the header box making that the gasket is firstly distorted and the protruding waves (12) and the segments (13) placed therebetween are then folded back towards a flange (4) of the header box in the same time as the deformable gasket (14) continues to be maintained under pressure.
2. Method according to claim 1, characterized in that the line of lesser resistance (11) is provided by forming holes or openings (10) in the upright edge of the tube end plate at a level for which the edge of the flange (4) of the header box or the top of lugs (21) of this flange (4) is enclosed in said holes or openings (10).
3. Method according to claims 1 and 2, characterized in that teeth (21) are formed in the header box (1) in register with some at least of the holes or openings (10) delimiting the line of lesser resistance, said holes or openings having a round, oblong, rectangular or trapezoidal shape, and said teeth having a width smaller than the holes or openings.
4. Method according to one of claims 1 to 3, characterized in that at least a slot, groove or wave (22) is cut in each upright edge for extending up to vicinity of the line of lesser resistance (11).
EP84402394A 1983-12-09 1984-11-23 Method of crimping a heat exchanger end plate onto a header box Expired EP0145574B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8319757A FR2556461B1 (en) 1983-12-09 1983-12-09 PROCESS FOR CRIMPING A COLLECTOR PLATE OF A HEAT EXCHANGER ON A WATER BOX AND EXCHANGER OBTAINED BY THIS PROCESS
FR8319757 1983-12-09

Publications (3)

Publication Number Publication Date
EP0145574A2 EP0145574A2 (en) 1985-06-19
EP0145574A3 EP0145574A3 (en) 1985-07-24
EP0145574B1 true EP0145574B1 (en) 1987-09-30

Family

ID=9295031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402394A Expired EP0145574B1 (en) 1983-12-09 1984-11-23 Method of crimping a heat exchanger end plate onto a header box

Country Status (7)

Country Link
US (1) US4649628A (en)
EP (1) EP0145574B1 (en)
BR (1) BR8406274A (en)
CA (1) CA1236087A (en)
DE (2) DE3466592D1 (en)
ES (1) ES8603646A1 (en)
FR (1) FR2556461B1 (en)

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Also Published As

Publication number Publication date
ES538332A0 (en) 1986-01-01
FR2556461B1 (en) 1988-08-26
US4649628A (en) 1987-03-17
ES8603646A1 (en) 1986-01-01
DE145574T1 (en) 1985-11-07
CA1236087A (en) 1988-05-03
BR8406274A (en) 1985-10-01
FR2556461A1 (en) 1985-06-14
DE3466592D1 (en) 1987-11-05
EP0145574A2 (en) 1985-06-19
EP0145574A3 (en) 1985-07-24

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