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EP0631099B1 - Method for securing a partition wall in a tubular header box of a heat exchanger - Google Patents

Method for securing a partition wall in a tubular header box of a heat exchanger Download PDF

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Publication number
EP0631099B1
EP0631099B1 EP19940109342 EP94109342A EP0631099B1 EP 0631099 B1 EP0631099 B1 EP 0631099B1 EP 19940109342 EP19940109342 EP 19940109342 EP 94109342 A EP94109342 A EP 94109342A EP 0631099 B1 EP0631099 B1 EP 0631099B1
Authority
EP
European Patent Office
Prior art keywords
partition
tubular wall
annular surface
faces
tools
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 - Lifetime
Application number
EP19940109342
Other languages
German (de)
French (fr)
Other versions
EP0631099A3 (en
EP0631099A2 (en
Inventor
Hélène Gire
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.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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Filing date
Publication date
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0631099A2 publication Critical patent/EP0631099A2/en
Publication of EP0631099A3 publication Critical patent/EP0631099A3/en
Application granted granted Critical
Publication of EP0631099B1 publication Critical patent/EP0631099B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes

Definitions

  • the invention relates to heat exchangers of the type comprising at least one fluid box with a tubular wall, separated into compartments by a transverse partition, and a multiplicity of parallel tubes, each communicating with a compartment of the fluid box by an opening of said tubular wall.
  • FR-A-2 676 535 which is considered to be the closest state of the art, proposes to introduce the partition into the tubular wall, through an open end thereof, for the bring it into the position it must occupy, then deform the tubular wall on either side of the partition to immobilize it.
  • the invention provides an even simpler solution, particularly suited to the case where the fluid box comprises a single transverse partition.
  • the invention relates to a method for producing a heat exchanger comprising at least one fluid box with a tubular wall, separated into compartments by a transverse partition substantially in the form of a disc, and a multiplicity of parallel tubes, each communicating with a compartment. of the fluid box by an opening of said tubular wall, process in which the partition is introduced into the tubular wall, by an open end of the latter, to bring it into the position which it must occupy.
  • the partition is then deformed by means of tools applied against the two faces of the latter, by expanding it radially so as to immobilize it in said position by clamping in the tubular wall.
  • FIGS. 1 and 2 are views in axial section showing two successive phases of the method according to the invention .
  • the figures show a tubular wall 1 intended for a heat exchanger fluid box, in particular a condenser for an air conditioning installation of the passenger compartment of a motor vehicle, and a transverse partition 2 in the form of a disc intended to separate the interior volume of the fluid box in two compartments 3 and 4.
  • the completed heat exchanger comprises a series of fluid circulation tubes, not shown, oriented perpendicular to the longitudinal axis 5 of the tubular wall and mutually aligned along the latter, the ends of which pass through openings made in the tubular wall, and which open one into compartment 3, the other into compartment 4.
  • the partition 2 In its initial state, as shown in FIG. 1, the partition 2 has opposite faces 6 and 7 which are flat and parallel, and has a diameter slightly less than the inside diameter of the tubular wall 1. It can therefore be inserted therein with play, by one of the open ends thereof, to be brought to the desired location.
  • Two punches 8 and 9 are also introduced with play in the tubular wall, on either side of the partition.
  • the end face of each punch facing the partition, or working face has an annular rib 10 of revolution around axis 5, limited by two frustoconical surfaces, one radially exterior 11, the other radially interior 12, defining between them a circular edge 13.
  • the generatrix of surface 11 forms an angle with axis 5 greater than 45 °, and that of the surface 12 an angle less than 45 °.
  • the annular surface 12 delimits in the working face of the punch a central recess having a flat bottom 16.
  • the working faces of the punches may have a shape different from that described and shown.
  • the recess defined by the frustoconical surfaces 12 and the flat bottom 16 can be eliminated and replaced by a flat surface limited by the circular edge 13.

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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)
  • Air-Conditioning For Vehicles (AREA)

Description

L'invention concerne les échangeurs de chaleur du type comprenant au moins une boîte à fluide à paroi tubulaire, séparée en compartiments par une cloison transversale, et une multiplicité de tubes parallèles, communiquant chacun avec un compartiment de la boîte à fluide par une ouverture de ladite paroi tubulaire.The invention relates to heat exchangers of the type comprising at least one fluid box with a tubular wall, separated into compartments by a transverse partition, and a multiplicity of parallel tubes, each communicating with a compartment of the fluid box by an opening of said tubular wall.

Un tel échangeur, utilisable notamment comme condenseur dans une installation de climatisation de véhicule automobile, est décrit dans EP-A-0 377 936. Dans cet échangeur connu, la paroi tubulaire présente des fentes transversales, chaque cloison étant introduite latéralement à travers l'une de ces fentes et présentant un contour approprié lui permettant de venir en butée contre les extrémités de cette même fente. La cloison ainsi immobilisée est ensuite brasée à la paroi tubulaire. Cette disposition a pour inconvénient de compliquer la réalisation de la paroi tubulaire par l'usinage des fentes, et impose une forme irrégulière pour la cloison. De plus, ces fentes créent des risques de fuite supplémentaires.Such an exchanger, which can be used in particular as a condenser in a motor vehicle air conditioning installation, is described in EP-A-0 377 936. In this known exchanger, the tubular wall has transverse slots, each partition being introduced laterally through the one of these slots and having an appropriate contour allowing it to come into abutment against the ends of this same slot. The partition thus immobilized is then brazed to the tubular wall. This arrangement has the drawback of complicating the production of the tubular wall by machining the slots, and imposes an irregular shape for the partition. In addition, these slots create additional risk of leakage.

Pour remédier à ces inconvénients, FR-A-2 676 535 qui est considéré comme l'état de la technique le plus proche, propose d'introduire la cloison dans la paroi tubulaire, par une extrémité ouverte de celle-ci, pour l'amener dans la position qu'elle doit occuper, puis de déformer la paroi tubulaire de part et d'autre de la cloison pour immobiliser celle-ci.To overcome these drawbacks, FR-A-2 676 535 which is considered to be the closest state of the art, proposes to introduce the partition into the tubular wall, through an open end thereof, for the bring it into the position it must occupy, then deform the tubular wall on either side of the partition to immobilize it.

L'invention apporte une solution encore plus simple, particulièrement adaptée au cas où la boîte à fluide comporte une seule cloison transversale.The invention provides an even simpler solution, particularly suited to the case where the fluid box comprises a single transverse partition.

L'invention vise un procédé de réalisation d'un échangeur de chaleur comprenant au moins une boîte à fluide à paroi tubulaire, séparée en compartiments par une cloison transversale sensiblement en forme de disque, et une multiplicité de tubes parallèles, communiquant chacun avec un compartiment de la boîte à fluide par une ouverture de ladite paroi tubulaire, procédé dans lequel on introduit la cloison dans la paroi tubulaire, par une extrémité ouverte de celle-ci, pour l'amener dans la position qu'elle doit occuper.The invention relates to a method for producing a heat exchanger comprising at least one fluid box with a tubular wall, separated into compartments by a transverse partition substantially in the form of a disc, and a multiplicity of parallel tubes, each communicating with a compartment. of the fluid box by an opening of said tubular wall, process in which the partition is introduced into the tubular wall, by an open end of the latter, to bring it into the position which it must occupy.

Selon l'invention, on déforme ensuite la cloison au moyen d'outils appliqués contre les deux faces de celle-ci, en la dilatant radialement de façon à l'immobiliser dans ladite position par serrage dans la paroi tubulaire.According to the invention, the partition is then deformed by means of tools applied against the two faces of the latter, by expanding it radially so as to immobilize it in said position by clamping in the tubular wall.

D'autres caractéristiques, complémentaires ou alternatives, de l'invention sont énoncées ci-après :

  • L'un au moins desdits outils est un poinçon comportant une région en saillie qui forme une empreinte en creux dans la face correspondante de la cloison.
  • Ladite région en saillie est limitée radialement vers l'extérieur par une première surface annulaire entourant l'axe longitudinal de la paroi tubulaire et inclinée par rapport à celui-ci.
  • La région en saillie est limitée radialement vers l'intérieur par une seconde surface annulaire inclinée par rapport audit axe en sens contraire de la première surface annulaire et définissant avec celle-ci une arête d'attaque annulaire.
  • La première surface annulaire est plus fortement inclinée que la seconde surface annulaire.
  • On applique sur les deux faces de la cloison des poinçons comportant des régions en saillie disposées sensiblement en regard l'une de l'autre.
  • On applique les outils sur les faces de la cloison par percussion.
  • On brase la paroi tubulaire à la cloison et/ou aux tubes de façon étanche au fluide.
  • Le brasage est effectué par fusion d'un revêtement métallique fusible prévu sur l'une au moins des pièces à braser.
Other characteristics, complementary or alternative, of the invention are set out below:
  • At least one of said tools is a punch having a protruding region which forms a recess in the corresponding face of the partition.
  • Said projecting region is bounded radially outward by a first annular surface surrounding the longitudinal axis of the tubular wall and inclined with respect thereto.
  • The projecting region is bounded radially inwards by a second annular surface inclined relative to said axis in the opposite direction from the first annular surface and defining therewith an annular leading edge.
  • The first annular surface is more strongly inclined than the second annular surface.
  • Punches are applied to the two faces of the partition having projecting regions disposed substantially opposite one another.
  • The tools are applied to the sides of the partition by percussion.
  • The tubular wall is brazed to the partition and / or to the tubes in a fluid-tight manner.
  • Brazing is carried out by melting a fusible metal coating provided on at least one of the parts to be brazed.

Les caractéristiques et avantages de l'invention seront exposés plus en détail dans la description ci-après, en se référant aux dessins annexés, sur lesquels les figures 1 et 2 sont des vues en coupe axiale montrant deux phases successives du procédé selon l'invention.The characteristics and advantages of the invention will be explained in more detail in the description below, with reference to the accompanying drawings, in which FIGS. 1 and 2 are views in axial section showing two successive phases of the method according to the invention .

Les figures montrent une paroi tubulaire 1 destinée à une boîte à fluide d'échangeur de chaleur, notamment de condenseur pour une installation de climatisation de l'habitacle d'un véhicule automobile, et une cloison transversale 2 en forme de disque destinée à séparer le volume intérieur de la boîte à fluide en deux compartiments 3 et 4. L'échangeur de chaleur terminé comprend une série de tubes de circulation de fluide non représentés, orientés perpendiculairement à l'axe longitudinal 5 de la paroi tubulaire et mutuellement alignés le long de celui-ci, dont les extrémités traversent des ouvertures ménagées dans la paroi tubulaire, et qui débouchent les uns dans le compartiment 3, les autres dans le compartiment 4.The figures show a tubular wall 1 intended for a heat exchanger fluid box, in particular a condenser for an air conditioning installation of the passenger compartment of a motor vehicle, and a transverse partition 2 in the form of a disc intended to separate the interior volume of the fluid box in two compartments 3 and 4. The completed heat exchanger comprises a series of fluid circulation tubes, not shown, oriented perpendicular to the longitudinal axis 5 of the tubular wall and mutually aligned along the latter, the ends of which pass through openings made in the tubular wall, and which open one into compartment 3, the other into compartment 4.

Dans son état initial, comme montré à la figure 1, la cloison 2 présente des faces opposées 6 et 7 planes et parallèles, et possède un diamètre légèrement inférieur au diamètre intérieur de la paroi tubulaire 1. Elle peut donc y être introduite avec jeu, par l'une des extrémités ouvertes de celle-ci, pour être amenée à l'emplacement voulu. On introduit également avec jeu dans la paroi tubulaire, de part et d'autre de la cloison, deux poinçons 8 et 9. La face d'extrémité de chaque poinçon tournée vers la cloison, ou face de travail, présente une nervure annulaire 10 de révolution autour de l'axe 5, limitée par deux surfaces tronconiques, l'une radialement extérieure 11, l'autre radialement intérieure 12, définissant entre elles une arête circulaire 13. La génératrice de la surface 11 fait avec l'axe 5 un angle supérieur à 45°, et celle de la surface 12 un angle inférieur à 45°. Les sommets des cônes auxquels appartiennent ces surfaces sont situés respectivement du côté de la cloison 2 et du côté du corps du poinçon par rapport à la face de travail de celui-ci. La surface annulaire 12 délimite dans la face de travail du poinçon un évidement central ayant un fond plat 16.In its initial state, as shown in FIG. 1, the partition 2 has opposite faces 6 and 7 which are flat and parallel, and has a diameter slightly less than the inside diameter of the tubular wall 1. It can therefore be inserted therein with play, by one of the open ends thereof, to be brought to the desired location. Two punches 8 and 9 are also introduced with play in the tubular wall, on either side of the partition. The end face of each punch facing the partition, or working face, has an annular rib 10 of revolution around axis 5, limited by two frustoconical surfaces, one radially exterior 11, the other radially interior 12, defining between them a circular edge 13. The generatrix of surface 11 forms an angle with axis 5 greater than 45 °, and that of the surface 12 an angle less than 45 °. The vertices of the cones to which these surfaces are located respectively on the side of the partition 2 and on the side of the body of the punch relative to the working face thereof. The annular surface 12 delimits in the working face of the punch a central recess having a flat bottom 16.

Pour fixer en place la cloison, on frappe ses faces 6 et 7 au moyen des poinçons. Les nervures 10 pénètrent alors dans ces faces en formant des empreintes annulaires 14 (figure 2). De plus, les surfaces inclinées 11 des nervures repoussent la matière de la cloison radialement vers l'extérieur, augmentant le diamètre extérieur de celle-ci et provoquant son serrage radial dans la paroi tubulaire 1. Pour éviter une dilatation de cette dernière sous la poussée radiale exercée par la cloison, la paroi tubulaire peut être insérée dans un manchon épais 15, comme montré à la figure 1, pendant cette opération.To fix the partition in place, its faces 6 and 7 are struck by means of the punches. The ribs 10 then penetrate into these faces by forming annular impressions 14 (FIG. 2). In addition, the inclined surfaces 11 of the ribs push the material of the partition radially outwards, increasing the outside diameter of the latter and causing it to be radially tightened in the tubular wall 1. To avoid expansion of the latter under the thrust radial exerted by the partition, the tubular wall can be inserted into a thick sleeve 15, as shown in Figure 1, during this operation.

La position de la cloison étant ainsi stabilisée, l'étanchéité entre les compartiments 3 et 4 peut ensuite être assurée par brasage de la façon habituelle. De même, on peut réaliser un brasage étanche entre la paroi tubulaire et les tubes de circulation, après la mise en place de ces derniers.The position of the partition being thus stabilized, the seal between the compartments 3 and 4 can then be ensured by brazing in the usual way. Likewise, a tight brazing can be carried out between the tubular wall and the circulation tubes, after the latter have been put in place.

Les faces de travail des poinçons peuvent avoir une forme différente de celle décrite et représentée. En particulier, l'évidement défini par les surfaces tronconiques 12 et le fond plat 16 peut être supprimé et remplacé par une surface plane limitée par l'arête circulaire 13.The working faces of the punches may have a shape different from that described and shown. In particular, the recess defined by the frustoconical surfaces 12 and the flat bottom 16 can be eliminated and replaced by a flat surface limited by the circular edge 13.

Claims (9)

  1. A method of making a heat exchanger comprising at least one fluid header with a tubular wall, divided into compartments (3, 4) by a transverse partition (2) substantially in the form of a disc, together with a multiplicity of parallel tubes each of which communicates with a compartment of the fluid header through an aperture in the said tubular wall (1), in which method the partition is introduced into the tubular wall through an open end of the latter, so as to bring it into the position which it is to occupy, characterised in that the partition is subsequently deformed by means of tools (8, 9) which are applied against both faces (6, 7) of the latter, so as to expand it radially in such a way as to immobilise it in the said position in which it is gripped in the tubular wall.
  2. A method according to Claim 1, characterised in that at least one of the said tools is a punch (8, 9) having a projecting region (10) which forms a hollow recess (14) in the corresponding face of the partition (2).
  3. A method according to Claim 2, characterised in that the said projecting region (10) is bounded on its radially outer side by a first annular surface (11) which surrounds the longitudinal axis (5) of the tubular wall (1) and is inclined with respect to the latter.
  4. A method according to Claim 3, characterised in that the projecting region (10) is bounded on its radially inner side by a second annular surface (12) which is inclined with respect to the said axis (5) in the direction opposite to the first annular surface (11), and which defines with the latter an annular incising edge (13).
  5. A method according to Claim 4, characterised in that the first annular surface (11) is inclined more steeply than the second annular surface (12).
  6. A method according to one of Claims 2 to 5, characterised in that punches (8, 9) having projecting regions (10) which are disposed substantially in facing relationship with each other, are applied on the two faces (6, 7) of the partition (2).
  7. A method according to one of the preceding Claims, characterised in that the tools (8, 9) are applied by percussion on the faces (6, 7) of the partition (2).
  8. A method according to one of the preceding Claims, characterised in that the tubular wall (1) is brazed to the partition (2) and/or to the tubes, so as to provide a seal against fluid.
  9. A method according to Claim 8, characterised in that the brazing operation is carried out by melting a fusible metallic coating which is provided on at least one of the components to be brazed.
EP19940109342 1993-06-23 1994-06-17 Method for securing a partition wall in a tubular header box of a heat exchanger Expired - Lifetime EP0631099B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9307651 1993-06-23
FR9307651A FR2706995B1 (en) 1993-06-23 1993-06-23

Publications (3)

Publication Number Publication Date
EP0631099A2 EP0631099A2 (en) 1994-12-28
EP0631099A3 EP0631099A3 (en) 1995-03-15
EP0631099B1 true EP0631099B1 (en) 1996-09-11

Family

ID=9448482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940109342 Expired - Lifetime EP0631099B1 (en) 1993-06-23 1994-06-17 Method for securing a partition wall in a tubular header box of a heat exchanger

Country Status (7)

Country Link
EP (1) EP0631099B1 (en)
CN (1) CN1103838A (en)
BR (1) BR9402455A (en)
DE (1) DE69400511T2 (en)
ES (1) ES2094593T3 (en)
FR (1) FR2706995B1 (en)
MX (1) MX9404714A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5799396A (en) * 1995-07-19 1998-09-01 Modine Manufacturing Company Method of installing a baffle in a header in a heat exchanger
US5761810A (en) * 1996-04-08 1998-06-09 Norsk Hydro, A.S. Method for installing baffle in a tubular member
CN107775206B (en) * 2017-09-05 2020-06-19 安徽建筑大学 A kind of square tube inner clapboard splicing and welding process method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2676535B1 (en) * 1991-05-14 1993-07-23 Valeo Thermique Moteur Sa HEAT EXCHANGER PROVIDED WITH A TUBULAR FLUID BOX WITH CROSS-SECTIONAL PARTITIONS, AND METHOD FOR THE PRODUCTION THEREOF.
DE4137037A1 (en) * 1991-07-02 1993-01-14 Thermal Waerme Kaelte Klima COLLECTOR FOR A FLAT TUBE CONDENSER

Also Published As

Publication number Publication date
DE69400511D1 (en) 1996-10-17
BR9402455A (en) 1995-01-24
DE69400511T2 (en) 1997-01-23
FR2706995B1 (en) 1995-10-13
EP0631099A3 (en) 1995-03-15
FR2706995A1 (en) 1994-12-30
ES2094593T3 (en) 1997-01-16
EP0631099A2 (en) 1994-12-28
CN1103838A (en) 1995-06-21
MX9404714A (en) 1995-01-31

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