EP0133401B1 - Connection device between a tube end plate and a header box of a heat exchanger, and method therefor - Google Patents

Connection device between a tube end plate and a header box of a heat exchanger, and method therefor Download PDF

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Publication number
EP0133401B1
EP0133401B1 EP84401573A EP84401573A EP0133401B1 EP 0133401 B1 EP0133401 B1 EP 0133401B1 EP 84401573 A EP84401573 A EP 84401573A EP 84401573 A EP84401573 A EP 84401573A EP 0133401 B1 EP0133401 B1 EP 0133401B1
Authority
EP
European Patent Office
Prior art keywords
end plate
tube end
clamp
header box
lugs
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
EP84401573A
Other languages
German (de)
French (fr)
Other versions
EP0133401A1 (en
Inventor
Patrice Clair
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
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Chausson Usines SA
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Filing date
Publication date
Application filed by Chausson Usines SA filed Critical Chausson Usines SA
Publication of EP0133401A1 publication Critical patent/EP0133401A1/en
Application granted granted Critical
Publication of EP0133401B1 publication Critical patent/EP0133401B1/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
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44983—Clasp, clip, support-clamp, or required component thereof formed from single rigid piece of material
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/49—Fastener destructively secured by reshaping distortion force [e.g., ductile fastener]
    • 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
    • Y10T29/49863—Assembling or joining with prestressing of 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
    • Y10T29/49—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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y10T29/49922—Overedge assembling of seated part by bending over projecting prongs
    • 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
    • Y10T29/49945—Assembling or joining by driven force fit
    • 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
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49954—Fastener deformed after application
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53996—Means to assemble or disassemble by deforming

Definitions

  • the present invention relates to a new connecting device between a header plate and a water box of a heat exchanger.
  • the invention applies to those of heat exchangers in which the collector plate is covered by a water box which is held in place by staples which have lugs bearing on a peripheral surface of the water box.
  • FR-A-2 475 712 described an embodiment in which the collector plate forms, at its periphery, a V-groove containing the flexible seal.
  • the peripheral edge of the water box is rounded to form a bead pressing on the flexible seal and the staple is initially shaped so that it can be fitted onto the peripheral edge of the water box by means of a reentrant upper edge. then by a pivoting movement, the clip is engaged below the V-shaped part of the collector plate.
  • the present invention overcomes this drawback.
  • connection device between a collecting plate and a water box of a heat exchanger comprising, at least, a clip bearing under the bottom of a peripheral groove of the collecting plate, and on the top of a peripheral bearing surface of the water box by means of legs separated by notches, the staple being preformed to delimit upper and lower legs distant by a measure for which a seal interposed between the collector plate and the water box is compressed, the upper legs having a length so that they extend over most of the peripheral bearing surface of the water box, is characterized in that the lower legs are slightly larger to extend over most of the bottom surface of the part of the collector plate which delimits the groove without protruding up to the rising edge of this groove and in that said clip pres ente at least one lower leg of length greater than the width of the bottom of the groove of the collector plate projecting beyond it.
  • the invention also extends to a method for implementing the above device.
  • the method for the connection between a manifold plate and a water box of a heat exchanger in which said connection is provided by a preformed staple bearing under a peripheral groove of the collector plate and above a peripheral bearing surface of a water box covering the collector plate and pressing a seal against it is characterized in that a compression force is exerted between the collector plate and the water box to deform the seal that separates them, so that the clip is put in place by sliding so that it takes support, on the one hand, on the bearing surface of the water box and, on the other hand, against the bottom of the peripheral groove of the collector plate, in that the clip is locked to the collector plate after it has been put in place by sliding and in that, for lock the clip to the collector plate after its installation by sliding, said clip is provided with at least one lower tab of length greater than the width of the peripheral groove of the collector plate and in that the end of this tab is folded against the internal edge of said collector plate.
  • each collector plate 1 delimits in a known manner a peripheral groove 3 in which is disposed a deformable seal 4, for example made of elastomer.
  • the collecting plate 1 is covered by a water box 5 whose edge 5 which is engaged in the groove 3 has a peripheral bearing surface 6.
  • Each staple has a back 8 from which project the upper 9 and lower 10 legs.
  • the upper legs 9 have a length which is chosen so that they extend over the major part of the peripheral bearing surface 6 of the water box.
  • the lower tabs 10 are slightly larger to extend over the major part of the bottom 1a of the part of the collecting plate which delimits the groove 3 without however projecting up to the rising edge 1b of the collecting plate.
  • Lower legs, called long, designated by 11, are also provided. There is for example a long leg 11 for five lower legs.
  • the clip described above is manufactured by cutting and folding and / or stamping. It is advantageous that the height h of its back makes it perfectly flat, that is to say that the notches 12, respectively 13, which coincide and which separate the upper legs, on the one hand, and lower , on the other hand, extend to the end of the rounded portions 14,15 of the clip.
  • the staple Since the staple is cut and preformed before being put in place, its production can be very precise, in particular as regards the measurement of the interval separating the facing faces of the upper legs 9 and lower legs 10.
  • the collector plate is made to support at the bottom 1a which it delimits by teeth 16 of a comb 17, the width of the teeth 16 being less or at most equal to the width of the notches 13.
  • the pressure exerted by the combs 17 and 19 compresses the seal 4 slightly more than is necessary to allow the staples 7 to be put in place by sliding and with gentle friction, as illustrated by the arrow f 1 in FIG. 3.
  • the compression pressure can then be slightly lowered so that the bottom 1 8 of the collector plate, on the one hand, and the peripheral bearing surface 6 of the water box 5, on the other hand, come into close contact with the corresponding walls of the clip.
  • a crimping comb 20 (fig. 5) is moved which has a continuous edge 21 intended to come to bear over the entire length of the back 8 of each clip.
  • the comb 20 also has legs 22 corresponding to the long lower legs 11.

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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)
  • Clamps And Clips (AREA)
  • Details Of Fluid Heaters (AREA)

Description

La présente invention concerne un nouveau dispositif de liaison entre une plaque collectrice et une boîte à eau d'un échangeur de chaleur.The present invention relates to a new connecting device between a header plate and a water box of a heat exchanger.

L'invention s'applique à ceux des échangeurs de chaleur dans lesquels la plaque collectrice est recouverte par une boîte à eau qui est maintenue en place par des agrafes qui comportent des pattes prenant appui sur une portée périphérique de la boîte à eau.The invention applies to those of heat exchangers in which the collector plate is covered by a water box which is held in place by staples which have lugs bearing on a peripheral surface of the water box.

Il est bien connu dans la technique de prévoir des agrafes qui sont mises en place après l'assemblage de la boîte à eau et dont des pattes saillantes sont repliées ou serties à la presse sur la portée d'appui de la boîte à eau, la pression exercée par la presse de sertissage faisant que le joint interposé entre la boîte à eau et la plaque collectrice est comprimé pour assurer l'étanchéité entre ces deux pièces. Des réalisations de ce genre sont décrites dans le GB-A- 2 108 648.It is well known in the art to provide staples which are put in place after assembly of the water box and whose projecting tabs are folded or crimped with the press on the bearing surface of the water box, the pressure exerted by the crimping press causing the seal interposed between the water box and the collector plate to be compressed to seal between these two parts. Achievements of this kind are described in GB-A-2 108 648.

Il a été constaté que le pliage ou sertissage des pattes des agrafes n'est pas réalisé dans la pratique d'une façon uniforme de sorte que lesdites pattes exercent des pressions non uniformes sur la boîte à eau. Cet inconvénient est encore augmenté comme l'expose le GB-A-2 108 648 par le fait que le pliage ou sertissage des pattes de l'agrafe a souvent pour effet de déformer le dos de l'agrafe, ce qui est dû aux contraintes développées à partir de la partie pliée desdites pattes.It has been found that the folding or crimping of the tabs of the staples is not carried out in practice in a uniform manner so that said tabs exert non-uniform pressures on the water box. This drawback is further increased as explained in GB-A-2 108 648 by the fact that the folding or crimping of the tabs of the clip often has the effect of deforming the back of the clip, which is due to the constraints developed from the folded part of said legs.

Pour éviter que des parties de l'agrafe soient repliées et que l'agrafe puisse être mise en place sans devoir la déformer ensuite tout en serrant un joint élastique entre la plaque collectrice et la boîte à eau, le FR-A-2 475 712 a décrit une réalisation dans laquelle la plaque collectrice forme, à sa périphérie, une rainure en V contenant le joint souple. Dans cette réalisation, le bord périphérique de la boîte à eau est arrondi pour former un bourrelet appuyant sur le joint souple et l'agrafe est conformée initialement pour pouvoir, par un bord supérieur rentrant, être emboîtée sur le rebord périphérique de la boîte à eau puis par un mouvement de pivotement l'agrafe est engagée en dessous de la partie en V de la plaque collectrice.To prevent parts of the staple from being folded over and the staple to be able to be put in place without having to deform it afterwards while tightening an elastic seal between the collecting plate and the water box, FR-A-2 475 712 described an embodiment in which the collector plate forms, at its periphery, a V-groove containing the flexible seal. In this embodiment, the peripheral edge of the water box is rounded to form a bead pressing on the flexible seal and the staple is initially shaped so that it can be fitted onto the peripheral edge of the water box by means of a reentrant upper edge. then by a pivoting movement, the clip is engaged below the V-shaped part of the collector plate.

Cette disposition n'est cependant pas satisfaisante car il n'est pas possible dans la pratique d'exercer une force de compression importante sur le joint élastique. En effet, la partie de l'agrafe qui prend appui contre la partie délimitant le fond du V de la plaque collectrice forme un bras de levier qui engendre une grande flexibilité pour l'agrafe.This arrangement is however not satisfactory because it is not possible in practice to exert a significant compressive force on the elastic joint. Indeed, the part of the clip which bears against the part delimiting the bottom of the V of the collecting plate forms a lever arm which generates great flexibility for the clip.

Il résulte des facteurs énoncés ci-dessus que des défauts d'étanchéité peuvent se produire entre la plaque collectrice et la boîte à eau qui la recouvre.As a result of the factors set out above, leaks can occur between the collector plate and the water box which covers it.

La présente invention remédie à cet inconvénient.The present invention overcomes this drawback.

Conformément à l'invention, le dispositif de liaison entre une plaque collectrice et une boîte à eau d'un échangeur de chaleur comportant, au moins, une agrafe prenant appui en dessous du fond d'une gorge périphérique de la plaque collectrice, et sur le dessus d'une portée d'appui périphérique de la boîte à eau au moyen de pattes séparées par des encoches, l'agrafe étant préformée pour délimiter des pattes supérieures et inférieures distantes d'une mesure pour laquelle un joint d'étanchéité interposé entre la plaque collectrice et la boîte à eau est comprimé, les pattes supérieures présentant une longueur faisant qu'elles s'étendent sur la majeure partie de la portée d'appui périphérique de la boîte à eau, est caractérisé en ce que les pattes inférieures sont légèrement plus grandes pour s'étendre sur la majeure partie de la surface du fond de la partie de la plaque collectrice qui délimite la gorge sans faire saillie jusqu'au bord montant de cette gorge et en ce que ladite agrafe présente au moins une patte inférieure de longueur supérieure à la largeur du fond de la gorge de la plaque collectrice faisant saillie au-delà de celui-ci.According to the invention, the connection device between a collecting plate and a water box of a heat exchanger comprising, at least, a clip bearing under the bottom of a peripheral groove of the collecting plate, and on the top of a peripheral bearing surface of the water box by means of legs separated by notches, the staple being preformed to delimit upper and lower legs distant by a measure for which a seal interposed between the collector plate and the water box is compressed, the upper legs having a length so that they extend over most of the peripheral bearing surface of the water box, is characterized in that the lower legs are slightly larger to extend over most of the bottom surface of the part of the collector plate which delimits the groove without protruding up to the rising edge of this groove and in that said clip pres ente at least one lower leg of length greater than the width of the bottom of the groove of the collector plate projecting beyond it.

L'invention s'étend également à un procédé pour la mise en oeuvre du dispositif ci-dessus.The invention also extends to a method for implementing the above device.

Conformément à cette seconde disposition de l'invention, le procédé pour la liaison entre une plaque collectrice et une boîte à eau d'un échangeur de chaleur dans lequel ladite liaison est assurée par une agrafe préformée prenant appui en dessous d'une gorge périphérique de la plaque collectrice et au-dessus d'une portée d'appui périphérique d'une boîte à eau recouvrant la plaque collectrice et serrant contre celle-ci un joint d'étanchéité, est caractérisé en ce qu'on exerce un effort de compression entre la plaque collectrice et la boîte à eau pour déformer le joint d'étanchéité qui les sépare, en ce qu'on met en place l'agrafe par coulissement pour qu'elle prenne appui, d'une part, sur la portée d'appui de la boîte à eau et, d'autre part, contre le fond de la gorge périphérique de la plaque collectrice, en ce qu'on verrouille l'agrafe à la plaque collectrice après sa mise en place par coulissement et en ce que, pour verrouiller l'agrafe à la plaque collectrice après sa mise en place par coulissement, on munit ladite agrafe au moins d'une patte inférieure de longueur supérieure à la largeur de la gorge périphérique de la plaque collectrice et en ce qu'on replie l'extrémité de cette patte contre le bord interne de ladite plaque collectrice.According to this second arrangement of the invention, the method for the connection between a manifold plate and a water box of a heat exchanger in which said connection is provided by a preformed staple bearing under a peripheral groove of the collector plate and above a peripheral bearing surface of a water box covering the collector plate and pressing a seal against it, is characterized in that a compression force is exerted between the collector plate and the water box to deform the seal that separates them, so that the clip is put in place by sliding so that it takes support, on the one hand, on the bearing surface of the water box and, on the other hand, against the bottom of the peripheral groove of the collector plate, in that the clip is locked to the collector plate after it has been put in place by sliding and in that, for lock the clip to the collector plate after its installation by sliding, said clip is provided with at least one lower tab of length greater than the width of the peripheral groove of the collector plate and in that the end of this tab is folded against the internal edge of said collector plate.

Un mode de réalisation de l'invention est représenté au dessin annexé.

  • La figure 1 est une perspective d'une agrafe pour la réalisation du dispositif de liaison, plaque collectrice-boîte à eau, objet de l'invention.
  • La figure 2 est un plan vu de dessus, à plus petite échelle, correspondant à la figure 1 d'une agrafe.
  • La figure 3 illustre en élévation, et en coupe sensiblement suivant la ligne III-III de la fig. 4, un outillage de mise en place du dispositif de liaison sur un ensemble plaque collectrice-boîte à eau.
  • La figure 4 est une élévation latérale vue sensiblement suivant la ligne IV-IV de la fig. 3.
  • La figure 5 est une coupe-élévation très agrandie du dispositif de liaison et d'un détail de l'outillage pour sa mise en place.
An embodiment of the invention is shown in the accompanying drawing.
  • Figure 1 is a perspective of a clip for the realization of the connecting device, collector plate-water box, object of the invention.
  • Figure 2 is a plan seen from above, on a smaller scale, corresponding to Figure 1 of a staple.
  • FIG. 3 illustrates in elevation, and in section substantially along line III-III of FIG. 4, a tool for installing the connection device on a collector plate-water box assembly.
  • Figure 4 is a side elevation seen substantially along line IV-IV of FIG. 3.
  • Figure 5 is a greatly enlarged sectional elevation of the connecting device and a detail of the tool for its establishment.

Au dessin, 1 désigne une plaque collectrice pour des tubes de circulation 2 d'un échangeur de chaleur. Chaque plaque collectrice 1 délimite de façon connue une gorge périphérique 3 dans laquelle est disposé un joint déformable 4, par exemple en élastomère. La plaque collectrice 1 est recouverte par une boîte à eau 5 dont le bord 5 qui est engagé dans la gorge 3 présente une portée d'appui périphérique 6.In the drawing, 1 designates a header plate for circulation tubes 2 of a heat exchanger. Each collector plate 1 delimits in a known manner a peripheral groove 3 in which is disposed a deformable seal 4, for example made of elastomer. The collecting plate 1 is covered by a water box 5 whose edge 5 which is engaged in the groove 3 has a peripheral bearing surface 6.

La liaison entre la boîte à eau 5 et la plaque collectrice 1 est assurée par des agrafes désignées dans leur ensemble par 7. Chaque agrafe comporte un dos 8 à partir duquel font saillie des pattes supérieures 9 et inférieures 10.The connection between the water box 5 and the collector plate 1 is ensured by staples designated as a whole by 7. Each staple has a back 8 from which project the upper 9 and lower 10 legs.

Les pattes supérieures 9 présentent une longueur qui est choisie pour qu'elles s'étendent sur la majeure partie de la portée d'appui périphérique 6 de la boîte à eau. Les pattes inférieures 10 sont légèrement plus grandes pour s'étendre sur la majeure partie du fond 1a de la partie de la plaque collectrice qui délimite la gorge 3 sans cependant faire saillie jusqu'au bord montant 1b de la plaque collectrice. Des pattes inférieures, dites longues, désignées par 11, sont également prévues. Il existe par exemple une patte longue 11 pour cinq pattes inférieures.The upper legs 9 have a length which is chosen so that they extend over the major part of the peripheral bearing surface 6 of the water box. The lower tabs 10 are slightly larger to extend over the major part of the bottom 1a of the part of the collecting plate which delimits the groove 3 without however projecting up to the rising edge 1b of the collecting plate. Lower legs, called long, designated by 11, are also provided. There is for example a long leg 11 for five lower legs.

Le dessin, et en particulier les fig. 3 et 5, montrent que les pattes inférieures 11 font saillie, notamment au-delà du fond 18 de la gorge de la plaque collectrice.The drawing, and in particular figs. 3 and 5 show that the lower lugs 11 protrude, in particular beyond the bottom 1 8 of the groove of the header plate.

L'agrafe décrite ci-dessus est fabriquée par découpage et pliage et/ou emboutissage. Il est avantageux que la hauteur h de son dos fasse que celui-ci soit parfaitement plan, c'est-à-dire que les encoches 12, respectivement 13, qui coïncident et qui séparent les pattes supérieures, d'une part, et inférieures, d'autre part, s'étendent jusqu'à l'extrémité des parties arrondies 14,15 de l'agrafe.The clip described above is manufactured by cutting and folding and / or stamping. It is advantageous that the height h of its back makes it perfectly flat, that is to say that the notches 12, respectively 13, which coincide and which separate the upper legs, on the one hand, and lower , on the other hand, extend to the end of the rounded portions 14,15 of the clip.

Etant donné que l'agrafe est découpée et préformée avant sa mise en place, sa réalisation peut être très précise notamment en ce qui concerne la mesure de l'intervalle séparant les faces en regard des pattes supérieures 9 et inférieures 10.Since the staple is cut and preformed before being put in place, its production can be very precise, in particular as regards the measurement of the interval separating the facing faces of the upper legs 9 and lower legs 10.

Pour la mise en place des agrafes décrites dans ce qui précède, on procède comme suit : on fait supporter la plaque collectrice au niveau du fond 1a qu'elle délimite par des dents 16 d'un peigne 17, la largeur des dents 16 étant inférieure ou au plus égale à la largeur des encoches 13.To install the staples described in the foregoing, the procedure is as follows: the collector plate is made to support at the bottom 1a which it delimits by teeth 16 of a comb 17, the width of the teeth 16 being less or at most equal to the width of the notches 13.

Après mise en place du joint 4 et de la boîte à eau 5, on fait exercer sur la portée d'appui périphérique 6 de cette boîte à eau un effort de compression par des dents 18 d'un second peigne 19, lesdites dents 18 étant de largeur inférieure ou au plus égale à la largeur des encoches 12.After fitting the seal 4 and the water box 5, a compression force is exerted on the peripheral bearing surface 6 of this water box by teeth 18 of a second comb 19, said teeth 18 being of width less than or at most equal to the width of the notches 12.

La pression exercée par les peignes 17 et 19 comprime le joint 4 légèrement plus qu'il n'est nécessaire pour permettre la mise en place des agrafes 7 par coulissement et à frottement doux, comme illustré par la flèche f1 de la fig. 3.The pressure exerted by the combs 17 and 19 compresses the seal 4 slightly more than is necessary to allow the staples 7 to be put in place by sliding and with gentle friction, as illustrated by the arrow f 1 in FIG. 3.

La pression de compression peut ensuite être légèrement abaissée pour que le fond 18 de la plaque collectrice, d'une part, et la portée d'appui périphérique 6 de la boîte à eau 5, d'autre part, viennent en contact serré avec les parois correspondantes de l'agrafe.The compression pressure can then be slightly lowered so that the bottom 1 8 of the collector plate, on the one hand, and the peripheral bearing surface 6 of the water box 5, on the other hand, come into close contact with the corresponding walls of the clip.

Avant le retrait des peignes 17 et 19, on déplace un peigne de sertissage 20 (fig. 5) qui présente un bord continu 21 destiné à venir prendre appui sur toute la longueur du dos 8 de chaque agrafe. Le peigne 20 présente, par ailleurs, des pattes 22 correspondant aux pattes inférieures longues 11.Before the removal of the combs 17 and 19, a crimping comb 20 (fig. 5) is moved which has a continuous edge 21 intended to come to bear over the entire length of the back 8 of each clip. The comb 20 also has legs 22 corresponding to the long lower legs 11.

Le déplacement vers le haut du peigne 20, lorsqu'on considère la fig. 5, a pour effet tout d'abord d'amener le bord continu 21 contre le dos 8 de l'agrafe et donc de maintenir ce dos sur toute sa longueur avant que les pattes 22 commencent à agir sur la partie saillante des pattes inférieures longues 11.The upward movement of the comb 20, when considering FIG. 5, has the effect first of all of bringing the continuous edge 21 against the back 8 of the clip and therefore of maintaining this back over its entire length before the legs 22 begin to act on the projecting part of the long lower legs 11.

Le peigne 20 continuant son mouvement de montée, les pattes 22 provoquent le pliage de la partie saillante des pattes inférieures longues 11, ce qui est illustré en traits interrompus à la fig. 5. Ce pliage assure le verrouillage de l'agrafe par rapport à l'ensemble plaque collectrice-boîte à eau sans que ce pliage ait aucun effet quant à la mesure de la distance séparant les pattes supérieures 9 des pattes inférieures 10 ou 11, de sorte que la pression de déformation du joint 4 est parfaitement uniforme tout au long de l'agrafe.The comb 20 continuing its upward movement, the tabs 22 cause the projection of the projecting part of the long lower tabs 11, which is illustrated in broken lines in FIG. 5. This folding ensures the locking of the clip relative to the manifold plate-water box assembly without this folding having any effect as to the measurement of the distance separating the upper legs 9 from the lower legs 10 or 11, so that the deformation pressure of the seal 4 is perfectly uniform throughout the staple.

Claims (5)

1. Connection device between a tube end plate (1) and a header box (5) of a heat exchanger comprising, at least, one clamp (7) bearing underneath a peripheral groove (3) of the tube end plate, and on top of a peripheral bearing flange (6) of the header box by means of lugs separated by notches (12, 13), the clamp being preformed for defining upper (9) and lower (10) lugs separated by a measure for which a sealing gasket (4) interposed between the tube end plate and the header box is compressed, the upper lugs (9) having a length making that they extend on the greater part of the peripheral bearing flange (6) of the header box, characterized in that the lower lugs (10) are slightly greater to extend on the greater part of the surface of the bottom (la) of the part of the tube end plate which forms the groove (3) without protruding up to the raising edge (1 b) of this groove and in that said clamp (7) has at least a lower lug (11) of a length greater than the width of the bottom (1a) of the groove of the tube end plate protruding beyond the same.
2. Device according to claim 1, characterized in that the clamp has a back portion (8) of a regular height h which define the bottom of the notches (12, 13) separating the upper (9) and lower (10, 11) lugs, which notches extend into a rounded portion (14, 15) connecting said lugs to the back portion.
3. Method for the connection between a tube end plate (1) and a header box (5) of a heat exchanger in which said connection is provided by a preformed clamp (7) bearing underneath a peripheral groove (3) of the tube end plate and above a peripheral bearing flange of the header box covering the tube end plate and pressing thereagainst a sealing gasket, characterized in that there is exerted a compression effort between the tube end plate (1) and the header box (5) in order to deform the sealing gasket separating them, in that there is positioned the clamp (7) by sliding, so as bear, on one hand, on the bearing flange (6) of the header box and, on an other hand, against the bottom (1a) of the peripheral groove of the tube end plate, in that there is locked the clamp to the tube end plate after its positioning by sliding and in that, for locking the clamp to the tube end plate after its positioning by sliding, there is provided said clamp with at least one lower lug (11) of a length greater than the width of the peripheral groove (3) of the tube end plate (1) and in that there is bent over the end of this lug against the inner edge (1 b) of said tube end plate.
4. Method according to claim 3, characterized in that there is provided openings or notches (12, 13) in the upper (9) and lower (10, 11) portions of the clamp and in that there is applied the compression effort between the tube end plate and the header box by means of the teeth (16, 18) of combs (17, 19) bearing against the tube end plate and the header box while extending through the notches (12, 13).
5. Method according to one of claims 1 and 4, characterized in that there is bent over the end of each long lower lug (11) while the back portion (8) of the clamp positioned by sliding is maintained by a continuous edge of a crimping comb (20).
EP84401573A 1983-08-04 1984-07-26 Connection device between a tube end plate and a header box of a heat exchanger, and method therefor Expired EP0133401B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8312857 1983-08-04
FR8312857A FR2550328B1 (en) 1983-08-04 1983-08-04 CONNECTION DEVICE BETWEEN A COLLECTOR PLATE AND A WATER BOX OF A HEAT EXCHANGER AND METHOD FOR ITS IMPLEMENTATION

Publications (2)

Publication Number Publication Date
EP0133401A1 EP0133401A1 (en) 1985-02-20
EP0133401B1 true EP0133401B1 (en) 1987-09-30

Family

ID=9291392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401573A Expired EP0133401B1 (en) 1983-08-04 1984-07-26 Connection device between a tube end plate and a header box of a heat exchanger, and method therefor

Country Status (7)

Country Link
US (1) US4707905A (en)
EP (1) EP0133401B1 (en)
JP (1) JPS6057197A (en)
BR (1) BR8403910A (en)
DE (2) DE3466591D1 (en)
ES (1) ES534763A0 (en)
FR (1) FR2550328B1 (en)

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US6463334B1 (en) 1998-11-02 2002-10-08 Cardiac Pacemakers, Inc. Extendable and retractable lead
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US10527364B2 (en) * 2017-03-03 2020-01-07 Enterex America LLC Heat exchanger manifold with header groove reinforcement member
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Also Published As

Publication number Publication date
ES8603065A1 (en) 1985-12-01
DE3466591D1 (en) 1987-11-05
FR2550328A1 (en) 1985-02-08
EP0133401A1 (en) 1985-02-20
JPS6057197A (en) 1985-04-02
BR8403910A (en) 1985-07-09
ES534763A0 (en) 1985-12-01
US4707905A (en) 1987-11-24
FR2550328B1 (en) 1989-01-13
DE133401T1 (en) 1985-08-29

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