EP0518843A1 - Heat exchanger with a seal - Google Patents

Heat exchanger with a seal Download PDF

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Publication number
EP0518843A1
EP0518843A1 EP92870087A EP92870087A EP0518843A1 EP 0518843 A1 EP0518843 A1 EP 0518843A1 EP 92870087 A EP92870087 A EP 92870087A EP 92870087 A EP92870087 A EP 92870087A EP 0518843 A1 EP0518843 A1 EP 0518843A1
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EP
European Patent Office
Prior art keywords
groove
segments
face
segment
seal
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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.)
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EP92870087A
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German (de)
French (fr)
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GENEBREV SA
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GENEBREV SA
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Publication of EP0518843A1 publication Critical patent/EP0518843A1/en
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    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/264—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by sleeves, nipples

Definitions

  • the invention relates to sealing devices for heat exchangers which comprise two fluid distribution manifolds parallel to each other; the invention is more particularly intended for exchangers provided with dissipator tubes of dimensions greater than one meter and which can go up to several meters in length.
  • Heat exchangers in devices such as radiators, convectors etc. most often have ramps divided into segments. These segments are generally assembled using threaded fittings (or nipples). In known manner, flat and rigid seals are inserted during assembly, between the different segments. Materials such as paper are used in the case of cast iron radiators, klingerit, or compressed asbestos in the case of steel or aluminum radiators. These joints are compressed between the flanges of the segments, which must be strictly flat.
  • French patent 2,149,999 describes a radiator for a central heating installation in which the elements, made up of hollow metal profiles, are assembled by threaded connections. Elastic seals are arranged in enlargements formed in the walls of the hollow profiles. Such a design limits the length of the segments or assumes that there is practically no relative movement between two adjacent sections.
  • French patent 32,737 describes a radiator formed of juxtaposed sections each comprising a groove; a rubber seal is placed in this groove during assembly.
  • the seals are able to ensure a good seal for axial movements relative to the ramp but not at all for relative movements between two segments. In practice, this means that the length of the segments is here again limited.
  • the object of the invention is to produce a sealing device resistant to stresses severe thermal and mechanical effects involved in heat exchangers with large dissipative tubes.
  • Another object of the invention is that this sealing device also applies to exchangers provided with metal elements with a high coefficient of thermal expansion.
  • Another object of the invention is that the qualities of this device do not degrade over time.
  • Another object is that this device is easy to assemble and that it does not increase the manufacturing costs.
  • this device offers stable performance in the temperature range where the exchanger is supposed to operate (typically, from -10 to + 90 ° C).
  • the subject of the present invention is a sealing device for a heat exchanger, the said exchanger comprising at least two fluid distribution ramps parallel to each other and each comprising an axial duct, the said ramps being divided into segments, exchanger tubes s extending between the corresponding segments of the distribution ramps, the segments of the same distribution ramp having two end faces and being joined end to end by threaded connections, the end faces of these segments extending substantially in planes perpendicular to their axis; in this device, one of the end faces of each segment has a groove disposed around the axial duct of this segment, the other face being flat; an annular seal made of a flexible elastic material, of dimensions adapted to those of said groove, is inserted into this groove projecting from it, so as to apply hermetically against the flat end face of an adjacent segment .
  • the seal of the device according to the invention advantageously has a circular section.
  • it preferably has the shape of a torus.
  • This flexible seal has, in an advantageous form, a rectangular section, the groove having a corresponding rectangular shape.
  • the part of the end face surrounded by the groove is set back relative to the plane of the end face circumscribed at the groove; in this way, the flexible seal extends along this recessed part and has, after tightening, a comma-shaped section.
  • the groove is arranged at the junction between the end face and the axial duct of the segment.
  • the material constituting the flexible seal is preferably chosen from the assembly formed by synthetic elastic materials, rubber, synthetic rubber, silicone rubber.
  • the invention has the advantage of conferring silent operation on the heat exchangers.
  • Another advantage is that it is no longer necessary to polish the two end faces before assembly, in order to avoid leaks due to traces of machining, painting, etc. Indeed, the flexible seal tolerates certain irregularities in the finish of the metal and in the assembly.
  • Fig. 1 schematically shows a heat exchanger 1 comprising two distribution ramps 2,3. Each of these ramps 2,3 is divided into segments 4, the corresponding segments 4 being interconnected by dissipator tubes 5.
  • Fig. 2 shows, in axial section, the assembly of segments 4 with sealing device 6 according to the prior art.
  • the ends 7 of each segment 4 are tapped respectively one according to a straight screw pitch, the other according to a reverse pitch.
  • a threaded connection (or nipple) comprising at each of its ends a right thread and a corresponding left thread, is mounted between the segments 4, which it secures.
  • Fig. 3 is a perspective view with cutaway of a segment 4 of distribution manifold 2 or 3 provided with a sealing device according to the invention.
  • the segment 4 is pierced axially by a conduit 10 carrying an internal thread.
  • a threaded connection 8 (or nipple) carrying two reverse screw threads is inserted, for mounting the exchanger, in this conduit 10.
  • the end face 9 of segment 4 comprises a flat part in which a groove 11 is hollowed out. , better visible in Fig. 4.
  • a flexible gasket 12 In this groove 11 is inserted a flexible gasket 12. It is also seen, in FIG. 3, a dissipator tube 5 connecting together the two distribution ramps 2,3 as well as the cooling fins 13 of this tube 5.
  • Fig. 4 shows, partially in axial section, one of the embodiments of the sealing device according to the invention.
  • the end face 9 of one of the segments 4 comprises, as shown in FIG. 3, a groove 11 into which is inserted a flexible seal 12, here of round section.
  • the end face 14 of the other segment 4, which faces it, is perfectly flat, which allows the flexible ring 12 to slide smoothly on this face when the differential expansion causes a relative movement perpendicular to the axis of the segments.
  • the threaded connection (or nipple) 8 is also pierced longitudinally so as to let the heat transfer fluid through, and lined with internal support panels 15 intended to allow the use of a clamping tool (not shown).
  • the thread of the connector 8 - whose role is purely mechanical - is calculated so as to allow a certain radial clearance between the connector 8 and each segment 4 on which it is mounted.
  • This radial clearance absorbs a large part of the tensions due to the differential expansion between the segments 4.
  • This relative clearance does not give rise to any sealing problem, since the device according to the invention is precisely designed to absorb without loss the relative movements between adjacent segments 4 are effective.
  • Fig. 5 shows an enlarged detail of FIG. 4: the end face 9 of one of the facing segments 4 is hollowed out with a groove 16; a seal 17 is engaged in this groove 16 but can slide without the seal being affected on the flat face 14 so as to fully absorb the differences in size caused by the expansion.
  • Figs. 6 and 7 show other possible variants of the device according to the invention: in FIG. 6, the seal 18 has a rectangular section (the groove 19 therefore has, therefore, the shape of a rectangular groove).
  • the seal 20 shown in FIG. 7 has an initially round section but it takes, after assembly, the shape of a comma, that is to say a rounded part 21 to which a lip 22 is attached.
  • Part 24 of the end face between the groove and the axis of the segment is in fact slightly recessed relative to the plane of the end face 9.
  • the seal 20 When the seal 20 is compressed, it preferably extends in the direction of the axis, from which a lip 22 is formed constituting a particularly effective seal.
  • Fig. 8 a variant of the sealing device according to the invention: the groove 23 has been provided at the junction of the end faces and the axial cavity 10, which in particular makes it possible to simplify the assembly by simply threading the seal 12 on the threaded connection 8.
  • elastomers such as synthetic rubbers and in particular silicone rubbers.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)

Abstract

The invention relates to the sealing devices for heat exchangers which comprise two fluid-distributing manifolds which are parallel to each other, the said manifolds (2, 3) being divided into segments (4) which are assembled via their end face (9, 14). A segment fitted with the sealing device according to the invention comprises, on this end face (9, 14), a groove (11) in which there is placed a seal made of elastic material (12) pressed against the plane end face (9, 14) of an adjacent segment. The device according to the invention applies especially to very long heat exchangers. <IMAGE>

Description

L'invention concerne les dispositifs d'étanchéité pour échangeurs de chaleur qui comprennent deux rampes de distribution de fluide parallèles entre elles; l'invention est plus particulièrement destinée à des échangeurs dotés de tubes dissipateurs de dimensions supérieures à un mètre et pouvant aller jusqu'à plusieurs mètres de long.The invention relates to sealing devices for heat exchangers which comprise two fluid distribution manifolds parallel to each other; the invention is more particularly intended for exchangers provided with dissipator tubes of dimensions greater than one meter and which can go up to several meters in length.

Les échangeurs de chaleur, dans des appareils tels que radiateurs, convecteurs etc. sont dotés, le plus souvent, de rampes divisées en segments. Ces segments sont généralement assemblés à l'aide de raccords filetés (ou nipples). De façon connue, des joints d'étanchéité plats et rigides sont insérés lors du montage, entre les différents segments. On utilise des matières telles que le papier, dans le cas de radiateurs en fonte, la klingerit, ou encore l'amiante comprimée dans le cas de radiateurs en acier ou en aluminium. Ces joints sont comprimés entre les flasques des segments, qui doivent être rigoureusement plans.Heat exchangers, in devices such as radiators, convectors etc. most often have ramps divided into segments. These segments are generally assembled using threaded fittings (or nipples). In known manner, flat and rigid seals are inserted during assembly, between the different segments. Materials such as paper are used in the case of cast iron radiators, klingerit, or compressed asbestos in the case of steel or aluminum radiators. These joints are compressed between the flanges of the segments, which must be strictly flat.

Le brevet français 2.149.999 décrit un radiateur pour installation de chauffage central dans lequel les éléments, constitués de profilés en métal creux sont assemblés par des raccords filetés. Des joints d'étanchéité élastiques sont disposés dans des élargissements ménagés dans les parois des profilés creux. Une telle conception limite la longueur des segments ou suppose qu'il ne se produise pratiquement pas de mouvement relatif entre deux profilés adjacents.French patent 2,149,999 describes a radiator for a central heating installation in which the elements, made up of hollow metal profiles, are assembled by threaded connections. Elastic seals are arranged in enlargements formed in the walls of the hollow profiles. Such a design limits the length of the segments or assumes that there is practically no relative movement between two adjacent sections.

Le brevet français 32.737 décrit un radiateur formé de sections juxtaposées comportant chacune une gorge; un joint en caoutchouc est disposé dans cette gorge au moment du montage. Ici également, les joints sont à même d'assurer une bonne étanchéité pour des mouvements axiaux par rapport à la rampe mais nullement pour des mouvements relatifs entre deux segments. En pratique, cela signifie que la longueur des segments est, ici aussi, limitée.French patent 32,737 describes a radiator formed of juxtaposed sections each comprising a groove; a rubber seal is placed in this groove during assembly. Here too, the seals are able to ensure a good seal for axial movements relative to the ramp but not at all for relative movements between two segments. In practice, this means that the length of the segments is here again limited.

Ces types d'assemblage ne posent guère de problème tant que la longueur des tubes dissipateurs reste inférieure à un mètre, et que l'on utilise des matériaux à coéfficient de dilatation relativement faible. Lorsque ces limites ne sont plus respectées, un type d'ennui jusque là peu habituel commence à apparaître : des fuites entre les segments des échangeurs de chaleur, d'autant plus fréquentes que la longueur des tubes dissipateurs est grande.These types of assembly do not pose much of a problem as long as the length of the dissipating tubes remains less than one meter, and as long as materials with relatively low coefficient of expansion are used. When these limits are no longer respected, a hitherto unusual type of boredom begins to appear: leaks between the segments of the heat exchangers, all the more frequent as the length of the dissipator tubes is great.

L'analyse a montré que ces fuites sont dues essentiellement à la combinaison de deux facteurs : d'une part, les déplacements relatifs entre les segments, dus à la dilatation différentielle des tubes dissipateurs et, d'autre part, l'inaptitude des joints utilisés dans les types de montage connus à reprendre ces déplacements. Les joints rigides subissent en effet, une rapide dégradation par érosion. Quant aux joints souples utilisés dans d'autres montages, étant immobilisés par rapport à chacune des pièces en déplacement relatif, ils sont en permanence soumis à un effet de cisaillement.Analysis has shown that these leaks are mainly due to the combination of two factors: on the one hand, the relative displacements between the segments, due to the differential expansion of the dissipator tubes and, on the other hand, the unsuitability of the seals used in known types of mounting to resume these movements. Rigid joints undergo rapid degradation by erosion. As for the flexible joints used in other assemblies, being immobilized with respect to each of the parts in relative movement, they are permanently subjected to a shearing effect.

On pourrait imaginer un type de montage inderdisant tout mouvement relatif entre les segments, ce qui réduirait le problème des joints, mais on se heurte alors à des problèmes de dilatation différentielle, encore moins faciles à surmonter.One could imagine a type of assembly inderdant any relative movement between the segments, which would reduce the problem of the joints, but one then comes up against problems of differential expansion, even less easy to overcome.

A titre d'illustration, on peut calculer que l'ouverture d'une vanne d'eau chaude (à 90°C) placée sur un radiateur en aluminium à 20°C induit par dilatation entre les deux premiers éléments une différence d'environ 1 à 2 mm !By way of illustration, it can be calculated that the opening of a hot water valve (at 90 ° C) placed on an aluminum radiator at 20 ° C induces by expansion between the first two elements a difference of approximately 1 to 2 mm!

Par ailleurs, le glissement entre les surfaces ne se fait jamais de façon régulière et produit des claquements gênants en exploitation. Les techniques actuellement connues dans ce domaine ne permettent pas de résoudre les problèmes ainsi causés.In addition, the sliding between the surfaces is never done regularly and produces annoying clicks during operation. The techniques currently known in this field do not make it possible to resolve the problems thus caused.

Le but de l'invention est de réaliser un dispositif d'étanchéité résistant aux sollicitations thermiques et mécaniques sévères intervenant dans les échangeurs à tubes dissipateurs de grandes dimensions.The object of the invention is to produce a sealing device resistant to stresses severe thermal and mechanical effects involved in heat exchangers with large dissipative tubes.

Un autre but de l'invention est que ce dispositif d'étanchéité s'applique également à des échangeurs dotés d'éléments en métal à coéfficient de dilatation thermique élevé.Another object of the invention is that this sealing device also applies to exchangers provided with metal elements with a high coefficient of thermal expansion.

Un autre but de l'invention est que les qualités de ce dispositif ne se dégradent pas dans le temps.Another object of the invention is that the qualities of this device do not degrade over time.

Un autre but est que ce dispositif soit aisé à monter et qu'il n'augmente pas les frais de fabrication.Another object is that this device is easy to assemble and that it does not increase the manufacturing costs.

Un autre but est que ce dispositif offre des performances stables dans la plage de température où l'échangeur est censé fonctionner (typiquement, de - 10 à + 90°C).Another object is that this device offers stable performance in the temperature range where the exchanger is supposed to operate (typically, from -10 to + 90 ° C).

La présente invention a pour objet un dispositif d'étanchéité pour échangeur de chaleur, le dit échangeur comportant au moins deux rampes de distribution de fluide parallèles entre elles et comportant chacune un conduit axial, les dites rampes étant divisées en segments, des tubes échangeurs s'étendant entre les segments correspondants des rampes de distribution, les segments d'une même rampe de distribution présentant deux faces d'about et étant assemblés bout à bout par des raccords filetés, les faces d'about de ces segments s'étendant sensiblement dans des plans perpendiculaires à leur axe; dans ce dispositif une des faces d'about de chaque segment comporte une gorge disposée autour du conduit axial de ce segment l'autre face étant plane; un joint annulaire en un matériau élastique souple, de dimensions adaptées à celles de la dite gorge, est inséré dans cette gorge en dépassant de celle-ci, de façon à s'appliquer hermétiquement contre la face d'about plane d'un segment adjacent.The subject of the present invention is a sealing device for a heat exchanger, the said exchanger comprising at least two fluid distribution ramps parallel to each other and each comprising an axial duct, the said ramps being divided into segments, exchanger tubes s extending between the corresponding segments of the distribution ramps, the segments of the same distribution ramp having two end faces and being joined end to end by threaded connections, the end faces of these segments extending substantially in planes perpendicular to their axis; in this device, one of the end faces of each segment has a groove disposed around the axial duct of this segment, the other face being flat; an annular seal made of a flexible elastic material, of dimensions adapted to those of said groove, is inserted into this groove projecting from it, so as to apply hermetically against the flat end face of an adjacent segment .

Le joint du dispositif suivant l'invention présente avantageusement une section circulaire.The seal of the device according to the invention advantageously has a circular section.

Dans ce cas, il présente de préférence la forme d'un tore.In this case, it preferably has the shape of a torus.

Ce joint souple présente, dans une forme avantageuse, une section rectangulaire, la gorge présentant une forme rectangulaire correspondante.This flexible seal has, in an advantageous form, a rectangular section, the groove having a corresponding rectangular shape.

Suivant un autre mode de réalisation, la partie de la face d'about entourée par la gorge se trouve en retrait par rapport au plan de la face d'about circonscrit à la gorge; de cette façon, le joint souple s'étend le long de cette partie en retrait et présente après serrage une section en forme de virgule.According to another embodiment, the part of the end face surrounded by the groove is set back relative to the plane of the end face circumscribed at the groove; in this way, the flexible seal extends along this recessed part and has, after tightening, a comma-shaped section.

Dans un mode de réalisation aisé à assembler, la gorge est disposée à la jonction entre la face d'about et le conduit axial du segment.In an embodiment which is easy to assemble, the groove is arranged at the junction between the end face and the axial duct of the segment.

Enfin, la matière constituant le joint souple est choisie de préférence dans l'ensemble formé par les matières élastiques de synthèse, le caoutchouc, le caoutchouc de synthèse, le caoutchouc de silicone.Finally, the material constituting the flexible seal is preferably chosen from the assembly formed by synthetic elastic materials, rubber, synthetic rubber, silicone rubber.

L'invention a comme avantage de conférer un fonctionnement silencieux aux échangeurs thermiques.The invention has the advantage of conferring silent operation on the heat exchangers.

Un autre avantage est qu'il n'est plus nécessaire de polir les deux faces d'about avant montage, afin d'éviter les fuites dues aux traces d'usinage, de peinture, etc. En effet, le joint d'étanchéité souple tolère certaines irrégularités dans le fini du métal et dans le montage.Another advantage is that it is no longer necessary to polish the two end faces before assembly, in order to avoid leaks due to traces of machining, painting, etc. Indeed, the flexible seal tolerates certain irregularities in the finish of the metal and in the assembly.

D'autres particularités et avantages de l'invention ressortiront de la description ci-après d'une forme de réalisation particulière, référence étant faite aux dessins annexés dans lesquels :

  • la Fig. 1 est une vue schématique générale d'un échangeur thermique;
  • la Fig. 2 est une vue partielle en coupe d'un échangeur avec joint d'étanchéité non élastique suivant l'art antérieur;
  • la Fig. 3 est une vue en perspective avec arrachement d'un segment d'échangeur montrant le dispositif d'étanchéité suivant l'invention;
  • la Fig. 4 est une vue partiellement en coupe suivant un plan axial de deux segments assemblés avec un dispositif d'étanchéité suivant l'invention;
  • les Fig. 5, 6, 7 et 8 sont des demi-vues en coupe suivant un plan axial de deux demi-segments assemblés montrant d'autres formes du dispositif suivant l'invention;
Other particularities and advantages of the invention will emerge from the description below of a particular embodiment, reference being made to the appended drawings in which:
  • Fig. 1 is a general schematic view of a heat exchanger;
  • Fig. 2 is a partial sectional view of an exchanger with non-elastic seal according to the prior art;
  • Fig. 3 is a perspective view with cutaway of an exchanger segment showing the sealing device according to the invention;
  • Fig. 4 is a partially sectional view along an axial plane of two segments assembled with a sealing device according to the invention;
  • Figs. 5, 6, 7 and 8 are half-views in section along an axial plane of two assembled half-segments showing other forms of the device according to the invention;

La Fig. 1 montre schématiquement un échangeur de chaleur 1 comportant deux rampes de distribution 2,3. Chacune de ces rampes 2,3 est divisée en segments 4, les segments 4 correspondants étant reliés entre eux par des tubes dissipateurs 5.Fig. 1 schematically shows a heat exchanger 1 comprising two distribution ramps 2,3. Each of these ramps 2,3 is divided into segments 4, the corresponding segments 4 being interconnected by dissipator tubes 5.

La Fig. 2 représente, en coupe axiale, l'assemblage de segments 4 avec dispositif d'étanchéité 6 suivant l'état de la technique. Les extrémités 7 de chaque segment 4 sont taraudées respectivement l'une suivant un pas de vis droit, l'autre suivant un pas inverse.Fig. 2 shows, in axial section, the assembly of segments 4 with sealing device 6 according to the prior art. The ends 7 of each segment 4 are tapped respectively one according to a straight screw pitch, the other according to a reverse pitch.

Un raccord fileté (ou nipple) comportant à chacune de ses extrémités un filet droit et un filet gauche correspondant, est monté entre les segments 4, qu'il solidarise. Un anneau d'étanchéité plat 6, en matériau non-élastique (tel que l'amiante comprimée) est inséré entre les faces d'about 9, (ou flasques) des segments. Cet anneau 6 peut être serré fortement en agissant par rotation sur le raccord fileté 8.A threaded connection (or nipple) comprising at each of its ends a right thread and a corresponding left thread, is mounted between the segments 4, which it secures. A flat sealing ring 6, made of non-elastic material (such as compressed asbestos) is inserted between the end faces 9, (or flanges) of the segments. This ring 6 can be tightened strongly by acting by rotation on the threaded connection 8.

Lorsqu'il se produit un réchauffement inégal dans les tubes dissipateurs, il s'ensuit un déplacement différentiel des segments 4, d'autant plus accentué que les tubes dissipateurs 5 sont longs. Ce mouvement provoque un effet de cisaillement sur le joint d'étanchéité 6 suivant l'art antérieur.When uneven heating occurs in the dissipator tubes, it follows a differential displacement of the segments 4, all the more accentuated as the dissipator tubes 5 are long. This movement causes a shearing effect on the seal 6 according to the prior art.

Ne disposant pas de la souplesse nécessaire, celui-ci s'use et s'altère à la suite des frottements répétés qu'il subit.Lacking the necessary flexibility, it wears out and deteriorates as a result of the repeated friction it undergoes.

Un effet similaire est observé lorsque le joint est un joint souple encastré de part et d'autre dans une rainure ménagée dans chacune des faces d'about : il subit dans ce cas une perpétuelle contrainte en cisaillement.A similar effect is observed when the joint is a flexible joint embedded on either side in a groove formed in each of the end faces: in this case it is subjected to a perpetual shear stress.

La Fig. 3 est une vue en perspective avec arrachement d'un segment 4 de rampe de distribution 2 ou 3 doté d'un dispositif d'étanchéité suivant l'invention. Le segment 4 est percé axialement par un conduit 10 portant un filet intérieur. Un raccord fileté 8 (ou nipple) portant deux pas de vis inverses est inséré, pour le montage de l'échangeur, dans ce conduit 10. La face d'about 9 du segment 4 comporte une partie plane dans laquelle est creusée une gorge 11, mieux visible à la Fig. 4.Fig. 3 is a perspective view with cutaway of a segment 4 of distribution manifold 2 or 3 provided with a sealing device according to the invention. The segment 4 is pierced axially by a conduit 10 carrying an internal thread. A threaded connection 8 (or nipple) carrying two reverse screw threads is inserted, for mounting the exchanger, in this conduit 10. The end face 9 of segment 4 comprises a flat part in which a groove 11 is hollowed out. , better visible in Fig. 4.

Dans cette gorge 11 est inséré un joint d'étanchéité souple 12. On voit également, à la Fig. 3, un tube dissipateur 5 reliant entre elles les deux rampes de distribution 2,3 ainsi que les ailettes de refroidissement 13 de ce tube 5.In this groove 11 is inserted a flexible gasket 12. It is also seen, in FIG. 3, a dissipator tube 5 connecting together the two distribution ramps 2,3 as well as the cooling fins 13 of this tube 5.

La Fig. 4 montre, partiellement en coupe axiale, une des formes de réalisation du dispositif d'étanchéité suivant l'invention. La face d'about 9 d'un des segments 4 comporte, comme représenté à la Fig. 3, une gorge 11 dans laquelle est inséré un joint d'étanchéité souple 12, ici de section ronde. La face d'about 14 de l'autre segment 4, qui lui fait face, est parfaitement plane, ce qui permet à l'anneau souple 12 de glisser sans heurts sur cette face lorsque la dilatation différentielle provoque un mouvement relatif perpendiculaire à l'axe des segments.Fig. 4 shows, partially in axial section, one of the embodiments of the sealing device according to the invention. The end face 9 of one of the segments 4 comprises, as shown in FIG. 3, a groove 11 into which is inserted a flexible seal 12, here of round section. The end face 14 of the other segment 4, which faces it, is perfectly flat, which allows the flexible ring 12 to slide smoothly on this face when the differential expansion causes a relative movement perpendicular to the axis of the segments.

Le raccord fileté (ou nipple) 8 est, lui aussi, percé longitudinalement de façon à laisser passer le fluide caloporteur, et garni de pans d'appui intérieurs 15 destinés à permettre l'usage d'un outil de serrage (non représenté).The threaded connection (or nipple) 8 is also pierced longitudinally so as to let the heat transfer fluid through, and lined with internal support panels 15 intended to allow the use of a clamping tool (not shown).

Le filetage du raccord 8 - dont le rôle est purement mécanique - est calculé de façon à permettre un certain jeu radial entre le raccord 8 et chaque segment 4 sur lequel il est monté. Ce jeu radial absorbe une grande partie des tensions dues à la dilatation différentielle entre les segments 4. Ce jeu relatif ne donne lieu à aucun problème d'étanchéité, puisque le dispositif suivant l'invention est précisément conçu pour absorber sans perte d'efficacité les mouvements relatifs entre segments 4 adjacents.The thread of the connector 8 - whose role is purely mechanical - is calculated so as to allow a certain radial clearance between the connector 8 and each segment 4 on which it is mounted. This radial clearance absorbs a large part of the tensions due to the differential expansion between the segments 4. This relative clearance does not give rise to any sealing problem, since the device according to the invention is precisely designed to absorb without loss the relative movements between adjacent segments 4 are effective.

La Fig. 5 montre un détail agrandi de la Fig. 4 : la face d'about 9 d'un des segments 4 en vis-à-vis est creusée d'une gorge 16; un joint 17 est engagé dans cette gorge 16 mais peut glisser sans que l'étanchéité soit affectée sur la face plane 14 de façon à reprendre intégralement les différences de dimension engendrées par la dilatation.Fig. 5 shows an enlarged detail of FIG. 4: the end face 9 of one of the facing segments 4 is hollowed out with a groove 16; a seal 17 is engaged in this groove 16 but can slide without the seal being affected on the flat face 14 so as to fully absorb the differences in size caused by the expansion.

Les Fig. 6 et 7 montrent d'autres variantes possibles du dispositif suivant l'invention : à la Fig. 6, le joint 18 a une section rectangulaire (la gorge 19 a donc, en conséquence, la forme d'une rainure rectangulaire).
Le joint d'étanchéité 20 montré à la Fig. 7 a une section initialement ronde mais il prend, après montage, la forme d'une virgule, soit une partie arrondie 21 à laquelle se rattache une lèvre 22. La partie 24 de la face d'about comprise entre la gorge et l'axe du segment est en effet légèrement en retrait par rapport au plan de la face d'about 9. Lorsque le joint 20 est comprimé, il s'étend préférentiellement en direction de l'axe, d'où il se forme une lèvre 22 constituant un joint d'étanchéité particulièrement efficace.Figs. 6 and 7 show other possible variants of the device according to the invention: in FIG. 6, the seal 18 has a rectangular section (the groove 19 therefore has, therefore, the shape of a rectangular groove).
The seal 20 shown in FIG. 7 has an initially round section but it takes, after assembly, the shape of a comma, that is to say a rounded part 21 to which a lip 22 is attached. Part 24 of the end face between the groove and the axis of the segment is in fact slightly recessed relative to the plane of the end face 9. When the seal 20 is compressed, it preferably extends in the direction of the axis, from which a lip 22 is formed constituting a particularly effective seal.

A la Fig. 8 est représentée une variante du dispositif d'étanchéité suivant l'invention : la gorge 23 a été ménagée à la jonction des faces d'about et de la cavité axiale 10, ce qui permet notamment de simplifier le montage en enfilant simplement le joint 12 sur le raccord fileté 8.In Fig. 8 is shown a variant of the sealing device according to the invention: the groove 23 has been provided at the junction of the end faces and the axial cavity 10, which in particular makes it possible to simplify the assembly by simply threading the seal 12 on the threaded connection 8.

Parmi les matériaux particulièrement appropriés pour réaliser le joint pour le dispositif suivant l'invention, on peut citer les élastomères tels que les caoutchoucs de synthèse et notamment les caoutchoucs de silicone.Among the materials which are particularly suitable for producing the seal for the device according to the invention, mention may be made of elastomers such as synthetic rubbers and in particular silicone rubbers.

Claims (7)

1.- Dispositif d'étancheité pour échangeur de chaleur (1), le dit échangeur comportant au moins deux rampes de distribution (2,3) de fluide parallèles entre elles et comportant chacune un conduit axial (10), les dites rampes (2,3) étant divisées en segments (4), des tubes dissipateurs (5) s'étendant entre les segments (4) correspondants des rampes de distribution (2,3) les segments (4) d'une même rampe de distribution présentant deux faces d'about et étant assembles bout à bout par des raccords filetés (8), les faces d'about (9,14) de ces segments (4) s'étendant sensiblement dans des plans perpendiculaires à leur axe, le dit dispositif étant caractérisé en ce qu'une des faces de bout (9,14) de chaque segment (4) comporte une gorge (11, 16, 19, 23, 24) disposée autour du conduit axial (10) de ce segment (4), un joint annulaire (12, 17, 18, 21) en un matériau élastique souple, de dimensions adaptées à celles de la dite gorge (11, 16, 19, 23, 24) étant disposé dans cette gorge (11, 16, 19, 23, 24) en dépassant de celle-ci, de façon à s'appliquer hermétiquement contre la face d'about (9, 14) d'un segment (4) adjacent, la face d'about (14) du segment (4) adjacent étant une surface plane. 1.- Sealing device for heat exchanger (1), said exchanger comprising at least two distribution ramps (2,3) of fluid parallel to each other and each comprising an axial duct (10), said ramps (2 , 3) being divided into segments (4), dissipator tubes (5) extending between the segments (4) corresponding to the distribution ramps (2,3) the segments (4) of the same distribution ramp having two end faces and being joined end to end by threaded connections (8), the end faces (9,14) of these segments (4) extending substantially in planes perpendicular to their axis, said device being characterized in that one of the end faces (9, 14) of each segment (4) has a groove (11, 16, 19, 23, 24) disposed around the axial duct (10) of this segment (4), an annular seal (12, 17, 18, 21) made of a flexible elastic material, of dimensions adapted to those of said groove (11, 16, 19, 23, 24) being disposed in s this groove (11, 16, 19, 23, 24) projecting therefrom, so as to apply hermetically against the abutment face (9, 14) of an adjacent segment (4), the face end (14) of the adjacent segment (4) being a flat surface. 2.- Dispositif suivant la revendication précédente caractérisé en ce que le joint souple (12) présente une section circulaire. 2.- Device according to the preceding claim characterized in that the flexible seal (12) has a circular section. 3.- Dispositif suivant la revendication 2 caractérisé en ce que le joint souple (12) a la forme d'un tore. 3.- Device according to claim 2 characterized in that the flexible seal (12) has the shape of a torus. 4.- Dispositif suivant la revendication 1 caractérisé en ce que le joint souple (18) présente une section rectangulaire et est inséré dans une gorge (19) de section rectangulaire correspondante. 4.- Device according to claim 1 characterized in that the flexible seal (18) has a rectangular section and is inserted in a groove (19) of corresponding rectangular section. 5.- Dispositif suivant l'une quelconque des revendications 1 à 3 caractérisé en ce qu'une partie (24) de la face d'about (9) entourée par la gorge se trouve en retrait par rapport au plan de la face d'about (9) circonscrit à la gorge, le joint souple (20) s'étendant le long de cette partie en retrait et présentant après serrage une section en forme de virgule (22). 5.- Device according to any one of claims 1 to 3 characterized in that a part (24) of the end face (9) surrounded by the groove is in withdrawal from the plane of the end face (9) circumscribed in the groove, the flexible seal (20) extending along this recessed part and having after tightening a comma-shaped section (22). 6.- Dispositif suivant l'une quelconque des revendications 1 à 4 caractérisé en ce que la gorge (2,3, 24) est disposée à la jonction entre la face d'about (9) et le conduit axial (10) du segment (14), 6.- Device according to any one of claims 1 to 4 characterized in that the groove (2,3, 24) is disposed at the junction between the end face (9) and the axial duct (10) of the segment (14), 7.- Dispositif suivant l'une quelconque des revendications précédentes caractérisé en ce que la matière constituant le joint annulaire (12, 17, 18, 21) élastique est choisie parmi l'ensemble forme par (les matières élastiques de synthèse, le caoutchouc, le caoutchouc de synthèse, le caoutchouc de silicone). 7.- Device according to any one of the preceding claims, characterized in that the material constituting the annular seal (12, 17, 18, 21) elastic is chosen from the group formed by (synthetic elastic materials, rubber, synthetic rubber, silicone rubber).
EP92870087A 1991-06-11 1992-06-11 Heat exchanger with a seal Withdrawn EP0518843A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9100563 1991-06-11
BE9100563A BE1004933A3 (en) 1991-06-11 1991-06-11 Devices for sealing heat exchangers.

Publications (1)

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EP0518843A1 true EP0518843A1 (en) 1992-12-16

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EP92870087A Withdrawn EP0518843A1 (en) 1991-06-11 1992-06-11 Heat exchanger with a seal

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EP (1) EP0518843A1 (en)
BE (1) BE1004933A3 (en)
DE (1) DE518843T1 (en)
ES (1) ES2041235T1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006570A5 (en) * 1993-06-22 1994-10-18 Genebrev Sa Device for assembly heat exchangers.
EP0984241A1 (en) 1998-09-03 2000-03-08 Genebrev S.A. Radiator for heating system with fluid circulation
EP1043560A1 (en) * 1999-04-06 2000-10-11 S.I.R.A. Spa Radiator unit for heating plants
FR2918165A1 (en) * 2007-06-29 2009-01-02 Dupraz En Soc Par Actions Simp Atmospheric exchanger for heat pump type heating device, has connecting and fixing unit connecting and fixing exchanger unit modules with each other, where each module has serpentine internal tubular passages
ES2343616A1 (en) * 2008-10-27 2010-08-04 Industrias Royal Termic, S.L. Electric radiator (Machine-translation by Google Translate, not legally binding)
ITMI20110345A1 (en) * 2011-03-04 2012-09-05 Fondital Spa ADAPTER DEVICE FOR CONNECTING A RADIATOR ELEMENT TO A HYDRAULIC SYSTEM

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1679371A1 (en) * 1967-02-27 1971-03-18 Kirsch Fa Bernhard Device for connecting two or more radiator sections
FR2149999A5 (en) * 1971-08-04 1973-03-30 Sas Italtermo Simonato

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE521661C (en) * 1931-03-27 Radiateurs Du Docteur Sa Connecting hub for sectional radiator made of sheet metal
US1340289A (en) * 1918-01-09 1920-05-18 Vincent R O'brien Nipple-coupling for radiators and similar structures
FR32737E (en) * 1926-12-10 1928-02-21 sheet steel radiator element
US3439732A (en) * 1964-11-28 1969-04-22 Mario Andreoli Die-casting process using magnetic core to position preform
CH612748A5 (en) * 1975-01-20 1979-08-15 Alfer Alu Fertigbau Hot water radiator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1679371A1 (en) * 1967-02-27 1971-03-18 Kirsch Fa Bernhard Device for connecting two or more radiator sections
FR2149999A5 (en) * 1971-08-04 1973-03-30 Sas Italtermo Simonato

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006570A5 (en) * 1993-06-22 1994-10-18 Genebrev Sa Device for assembly heat exchangers.
EP0631101A1 (en) * 1993-06-22 1994-12-28 Genebrev S.A. Connecting device for heat exchanger and heat exchanger provided with such a device
EP0984241A1 (en) 1998-09-03 2000-03-08 Genebrev S.A. Radiator for heating system with fluid circulation
EP1043560A1 (en) * 1999-04-06 2000-10-11 S.I.R.A. Spa Radiator unit for heating plants
FR2918165A1 (en) * 2007-06-29 2009-01-02 Dupraz En Soc Par Actions Simp Atmospheric exchanger for heat pump type heating device, has connecting and fixing unit connecting and fixing exchanger unit modules with each other, where each module has serpentine internal tubular passages
ES2343616A1 (en) * 2008-10-27 2010-08-04 Industrias Royal Termic, S.L. Electric radiator (Machine-translation by Google Translate, not legally binding)
ITMI20110345A1 (en) * 2011-03-04 2012-09-05 Fondital Spa ADAPTER DEVICE FOR CONNECTING A RADIATOR ELEMENT TO A HYDRAULIC SYSTEM

Also Published As

Publication number Publication date
DE518843T1 (en) 1993-09-23
BE1004933A3 (en) 1993-03-02
ES2041235T1 (en) 1993-11-16

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