WO2009021823A1 - Heat exchanger for gas, particularly for the exhaust gases of an engine - Google Patents

Heat exchanger for gas, particularly for the exhaust gases of an engine Download PDF

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Publication number
WO2009021823A1
WO2009021823A1 PCT/EP2008/059753 EP2008059753W WO2009021823A1 WO 2009021823 A1 WO2009021823 A1 WO 2009021823A1 EP 2008059753 W EP2008059753 W EP 2008059753W WO 2009021823 A1 WO2009021823 A1 WO 2009021823A1
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WO
WIPO (PCT)
Prior art keywords
housing
heat exchanger
manufactured
extrusion
casing
Prior art date
Application number
PCT/EP2008/059753
Other languages
French (fr)
Inventor
Yolanda Bravo Rodriguez
Jose Ignacio Pola Gutierrez
Miguel Gistas Hernaiz
Original Assignee
Valeo Termico S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Termico S.A. filed Critical Valeo Termico S.A.
Publication of WO2009021823A1 publication Critical patent/WO2009021823A1/en

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • F28D2021/0064—Vaporizers, e.g. evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F28D7/1692—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Definitions

  • the present invention relates to a heat exchanger for gas, in particular for the exhaust gases of an engine,
  • the invention is particularly applicable to heat exchangers for recycling the exhaust gases of an engine
  • EGRC exhaust Gas Recirculation Coolers
  • oil exchangers charge air coolers or intercoolers (CACs)
  • water charge air coolers and evaporators.
  • the heat exchanger itself may have different configurations: for example, it may consist of a casing inside which is arranged a series of parallel ducts for the passage of gases, the refrigerant circulating through the housing, to the outside to the ducts; in another embodiment, the exchanger consists of a series of parallel plates which constitute the heat exchange surfaces, so that the exhaust gases and the refrigerant circulate between two plates in alternating layers.
  • connection between the ducts and the crankcase can be of different types.
  • the ducts are fixed at their ends between two support plates coupled in each end of the casing, the two support plates having a plurality of orifices for the placement of the respective ducts. Said support plates are in turn fixed to means of connection with the recycling line,
  • Said connecting means may consist of a V-shaped connection or of a peripheral connection flange or flange, depending on the design of the recycle line where the exchanger is mounted.
  • the support plate is integrated into a single piece, the connection means forming a single connection flange.
  • the connection means may also consist of a gas reservoir disposed in one or both ends of the housing,
  • the manufacturing process is complex and very expensive because of the large number of connections to be made by soldering in the oven or by laser or arc welding.
  • One solution for reducing the cost of the heat exchanger is to substitute a cheaper material for the commonly used metallic material.
  • another solution for reducing said high cost is to extrusion the core of the exchanger formed by the parallel conduits and support plates.
  • the casing is usually made of a metallic material, and it therefore remains necessary to couple other components such as a gas tank, and / or refrigerant inlet and outlet ducts. .
  • the object of the gas heat exchanger, in particular for the exhaust gases of an engine, of the present invention is to overcome the drawbacks of exchangers known in the art, by providing a lower number of components, and thus fewer solder connection points, thereby reducing manufacturing time and costs and minimizing quality problems.
  • the gas heat exchanger in particular for the exhaust gases of an engine, object of the present invention, is of the type which comprises a core intended for the circulation of gases with a heat exchange with. a refrigeration fluid, a metal casing inside which is housed said core, at least one support plate connected to one end of said core and connected in turn to one end of said housing, and characterized by the fact that said casing can integrate in one piece 1 'at least one gas tank or connecting element, intake and outlet connections of the refrigerating fluid and fixing brackets on a surface of the engine compartment, the casing being manufactured by a process of extrusion or extrusion by percussion or cast iron.
  • the integration of the components in the casing is superior when the casing is manufactured by percussion extrusion, and even higher when it is manufactured by a melting process.
  • the manufacturing cost of the heat exchanger increases progressively as the integration of its components increases.
  • the casing thus manufactured can be connected to the rest of the components, that is to the support plate (s), by soldering, arc welding or laser welding, as is currently done.
  • the heat exchanger is of the "U" -shaped type in which the inlet and the outlet of the fluid to be refrigerated are disposed one close to the other in the same open end of the core, the opposite end being closed, and defining a path and a return path, and is characterized in that the housing is manufactured by extrusion by percussion or cast iron incorporating a gas reservoir in the closed end of the housing.
  • the casing is manufactured by percussion or cast extrusion further integrating a bridge-shaped refrigerant connection. disposed in the open end of the housing.
  • the housing is manufactured by extrusion incorporating a connection of the bridge-shaped coolant disposed in the open end. and another connection of the tube-shaped refrigerant disposed in the open end of the housing and another connection of the tube-shaped refrigerant disposed in a lateral side, such as mounting brackets on a surface of the engine compartment.
  • the housing is manufactured in two parts by a melting process incorporating refrigerant connections and mounting brackets on a surface of the engine compartment.
  • the heat exchanger is of the linear type in which the inlet and the outlet of the fluid to be refrigerated are disposed opposite one another, and is characterized by the fact that the casing is manufactured by percussion extrusion incorporating a connection flange at one of its ends.
  • FIG. 1 A schematically and by way of non-limiting example only, we represent at least one practical case of embodiment of the exchanger of heat for gas, in particular for the exhaust gases of an engine of the invention, in which: FIG.
  • DESCRIPTION OF PREFERRED EMBODIMENTS DESCRIPTION OF PREFERRED EMBODIMENTS
  • FIG. 1 A first embodiment of the invention is shown in Figures 1 and 2.
  • the heat exchanger 1 for gas in particular for the exhaust gases of an engine, comprises a set of parallel ducts 2, which in this example are flat and of rectangular section, intended for the circulation of gases with a heat exchange with a refrigeration fluid.
  • Said set of parallel ducts 2 is housed inside a casing 3 which in this case is also of rectangular section.
  • the heat exchanger 1 is of the "U" -shaped type in which the inlet and the outlet of the gas to be cooled are arranged one close to the other in the same open end of the set of parallel conduits, the opposite end being closed, and defining a path and a return path.
  • One of the ends of the duct assembly 2 is fixed to a support plate 4, which has a plurality of orifices for the positioning of the respective ducts 2.
  • Said support plate 4 is connected respectively to one end of the casing 3 in zones 3a by soldering in the oven, arc welding or laser welding.
  • the heat exchanger 1 comprises a gas tank 5 connected to the closed end of the casing 3 in the zones 3b by furnace brazing, arc welding or laser welding.
  • the casing 3 is manufactured by an extrusion process, or extrusion by percussion or cast iron, so that said casing 3 can integrate in one piece the gas reservoir 5. Integration of the components in the crankcase is higher when the housing 3 is manufactured by extrusion by percussion, and even greater when it is manufactured by a melting process. However, the manufacturing cost of the heat exchanger is gradually increasing as the integration of its components increases.
  • crankcase The integration of the components in the crankcase is very useful in a wide range of applications, also leading to savings in production costs.
  • FIG. 3 A second embodiment of the invention is shown in FIG. 3, where the heat exchanger is also of the "U" -shaped type, the casing 3 being made by percussion extrusion and further incorporating a plug connection.
  • the outlet connection 7 of the refrigerant fluid which has a tube shape is welded to the housing, as it can not be integrated into the housing. the casing extruded by percussion,
  • FIG. 4 A third embodiment of the invention is shown in FIG. 4, in which the heat exchanger Ib is also of the "U" -shaped type, the casing 3 being manufactured by a melting process and incorporating the connection of intake 6 of the bridge-shaped coolant disposed in the open end of the housing 3 and the outlet connection 7 of the tube-shaped coolant disposed in a lateral side, as well as mounting brackets 8 on a surface of the engine compartment .
  • FIG. 5 A fourth embodiment of the invention is shown in FIG. 5, where the heat exchanger Ic is also of the "U" shaped type, the casing 3 being made in two parts by a melting process and integrating the inlet 6 and outlet 7 fluid connections as well as the mounting brackets 8.
  • FIG. 6 A fifth embodiment of the invention is shown in FIG. 6, where the heat exchanger Id is of the linear type in which the inlet and the outlet of the gas to be refrigerated are disposed opposite one another, the casing 3 being manufactured by percussion extrusion and incorporating a connection flange 9 at one of its ends.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The heat exchanger for gas comprises a core (2) intended for the flow of gases with exchange of heat with a coolant fluid, a metal casing (3) in which the said core (2) is housed, at least one mounting plate (4) connected to at least one of the ends of said core (2) and in turn connected to one end of said casing (3), and at least one gas reservoir (5) or connection element (9) connected to one end of said casing (3). It is characterized in that said casing (3) may incorporate into a single component the at least one gas reservoir (5) or connection element (9), inlet and outlet connections (6, 7) for the coolant fluid and mounts (8) for attachment to a surface in the engine compartment, the casing (3) being manufactured using an extrusion or percussion extrusion process or by casting.

Description

ECHANGEUR DE CHALEUR POUR GAZ, EN PARTICULIER POUR LES GAZ D'ECHAPPEMENT D'UN MOTEUR HEAT EXCHANGER FOR GAS, ESPECIALLY FOR EXHAUST GASES OF AN ENGINE
La présente invention concerne un échangeur de chaleur pour gaz, en particulier pour les gaz d'échappement d'un moteur,The present invention relates to a heat exchanger for gas, in particular for the exhaust gases of an engine,
L'invention s'applique particulièrement aux échangeurs pour le recyclage des gaz d'échappement d'un moteurThe invention is particularly applicable to heat exchangers for recycling the exhaust gases of an engine
(Exhaust Gas Recirculation Coolers ou EGRC)', échangeurs à huile, refroidisseurs à' air de suralimentation ou intercoolers (Charge Air Coolers ou CAC) , refroidisseurs d'air de suralimentation à eau et évaporateurs .(Exhaust Gas Recirculation Coolers or EGRC) ', oil exchangers, charge air coolers or intercoolers (CACs), water charge air coolers and evaporators.
ANTECEDENTS DE L'INVENTION Dans certains échangeurs de chaleur destinés au refroidissement de gaz, par exemple ceux utilisés dans les systèmes de recyclage des gaz d'échappement vers l'admission d'un moteur à explosion, les deux milieux qui échangent la chaleur sont séparés par une paroi .BACKGROUND OF THE INVENTION In certain heat exchangers for gas cooling, for example those used in exhaust gas recirculation systems to the inlet of an internal combustion engine, the two heat exchanging media are separated. by a wall.
L ' échangeur de chaleur proprement dit peut avoir différentes configurations : par exemple, il peut consister en un carter à l'intérieur duquel est agencée une série de conduits parallèles pour le passage des gaz, le réfrigérant circulant à travers le carter, vers l'extérieur jusqu'aux conduits ; dans une autre réalisation, 1 ' échangeur consiste en une série de plaques parallèles qui constituent les surfaces d'échange de chaleur, de telle sorte que les gaz d'échappement et le réfrigérant circulent entre deux plaques, en couches alternées.The heat exchanger itself may have different configurations: for example, it may consist of a casing inside which is arranged a series of parallel ducts for the passage of gases, the refrigerant circulating through the housing, to the outside to the ducts; in another embodiment, the exchanger consists of a series of parallel plates which constitute the heat exchange surfaces, so that the exhaust gases and the refrigerant circulate between two plates in alternating layers.
Dans le cas des échangeurs de chaleur à faisceau de conduits, le raccordement entre les conduits et le carter peut être de différents types. Généralement, les conduits sont fixés par leurs extrémités entre deux plaques de support accouplées dans chaque extrémité du carter, les deux plaques de support présentant une pluralité d'orifices pour le placement des conduits respectifs, Lesdites plaques de support sont fixées à leur tour à des moyens de connexion avec la conduite de recyclage ,In the case of ductwork heat exchangers, the connection between the ducts and the crankcase can be of different types. Generally, the ducts are fixed at their ends between two support plates coupled in each end of the casing, the two support plates having a plurality of orifices for the placement of the respective ducts. Said support plates are in turn fixed to means of connection with the recycling line,
Lesdits moyens de connexion peuvent consister en une connexion en V ou bien en un rebord périphérique de connexion ou bride, en fonction de la conception de la conduite de recyclage où est monté 1 ' échangeur . Dans certains cas, la plaque de support est intégrée en une pièce unique, les moyens de connexion formant une bride de connexion unique. Les moyens de connexion peuvent aussi consister en un réservoir à gaz disposé dans une ou dans les deux extrémités du carter,Said connecting means may consist of a V-shaped connection or of a peripheral connection flange or flange, depending on the design of the recycle line where the exchanger is mounted. In some cases, the support plate is integrated into a single piece, the connection means forming a single connection flange. The connection means may also consist of a gas reservoir disposed in one or both ends of the housing,
Dans le cas des échangeurs à conduits parallèles comme dans celui des échangeurs à plaques empilées, tous les composants sont métalliques, si bien qu'ils sont assemblés par des moyens mécaniques puis brasés au four ou soudés au laser ou à l'arc pour assurer le niveau approprié d'étanchéité requis pour leur fonctionnement.In the case of parallel pipe exchangers, as in the case of stacked plate heat exchangers, all the components are metallic, so that they are assembled by mechanical means and then brazed in the oven or laser or arc welded to ensure appropriate level of sealing required for their operation.
En conséquence, le processus de fabrication est complexe et très coûteux en raison du nombre élevé de raccordements à réaliser par brasage au four ou par soudage au laser ou à l'arc.As a result, the manufacturing process is complex and very expensive because of the large number of connections to be made by soldering in the oven or by laser or arc welding.
Une solution pour réduire le coût de 1 ' échangeur de chaleur consiste à substituer au matériau métallique couramment utilisé un matériau moins cher. Ainsi, une autre solution pour réduire ledit coût élevé consiste à fabriquer par extrusion le noyau de 1 ' échangeur formé par les conduits parallèles et les plaques de support. Dans n'importe quel cas, le carter est habituellement en un matériau métallique, et il reste donc nécessaire d'accoupler d'autres composants tels qu'un réservoir à gaz, et/ou des conduits d'admission et de sortie du fluide réfrigérant.One solution for reducing the cost of the heat exchanger is to substitute a cheaper material for the commonly used metallic material. Thus, another solution for reducing said high cost is to extrusion the core of the exchanger formed by the parallel conduits and support plates. In any case, the casing is usually made of a metallic material, and it therefore remains necessary to couple other components such as a gas tank, and / or refrigerant inlet and outlet ducts. .
DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION
L'objet de l ' échangeur de chaleur pour gaz, en particulier pour les gaz d'échappement d'un moteur, de la présente invention est de remédier aux inconvénients que présentent les échangeurs connus dans l'art, en fournissant un nombre inférieur de composants, et ainsi un nombre moindre de points de raccordement par soudure, réduisant ainsi le temps et les coûts de fabrication et minimisant les problèmes de qualité.The object of the gas heat exchanger, in particular for the exhaust gases of an engine, of the present invention is to overcome the drawbacks of exchangers known in the art, by providing a lower number of components, and thus fewer solder connection points, thereby reducing manufacturing time and costs and minimizing quality problems.
L 'échangeur de chaleur pour gaz, en particulier pour les gaz d'échappement d'un moteur, objet de la présente invention, est du type qui comprend un noyau destiné à la circulation des gaz avec un échange thermique avec. un fluide de réfrigération, un carter métallique à l'intérieur duquel est logé ledit noyau, au moins une plaque de support raccordée à l'une des extrémités dudit noyau et raccordée à son tour à une extrémité dudit carter, et caractérisé par le fait que ledit carter peut intégrer en une seule pièce 1 ' au moins un réservoir à gaz ou élément de connexion, des connexions d'admission et de sortie du fluide de réfrigération et des supports de fixation sur une surface du compartiment moteur, le carter étant fabriqué par un processus d'extrusion ou d'extrusion par percussion ou de fonte .The gas heat exchanger, in particular for the exhaust gases of an engine, object of the present invention, is of the type which comprises a core intended for the circulation of gases with a heat exchange with. a refrigeration fluid, a metal casing inside which is housed said core, at least one support plate connected to one end of said core and connected in turn to one end of said housing, and characterized by the fact that said casing can integrate in one piece 1 'at least one gas tank or connecting element, intake and outlet connections of the refrigerating fluid and fixing brackets on a surface of the engine compartment, the casing being manufactured by a process of extrusion or extrusion by percussion or cast iron.
L'intégration des composants dans le carter est supérieure quand le carter est fabriqué par extrusion par percussion, et encore supérieure quand il est fabriqué par un processus de fonte. Cependant, le coût de fabrication de 1 ' échangeur de chaleur augmente progressivement à mesure qu'augmente l'intégration de ses composants.The integration of the components in the casing is superior when the casing is manufactured by percussion extrusion, and even higher when it is manufactured by a melting process. However, the manufacturing cost of the heat exchanger increases progressively as the integration of its components increases.
Le carter ainsi fabriqué peut être raccordé au reste des composants, c'est-à-dire à la ou aux plaques de support, par brasage au four, soudage à l'arc ou au laser, comme cela est réalisé actuellement.The casing thus manufactured can be connected to the rest of the components, that is to the support plate (s), by soldering, arc welding or laser welding, as is currently done.
Conformément à un premier mode de réalisation de l'invention, l ' échangeur de chaleur est du type en forme de "U" dans lequel l'admission et la sortie du fluide à réfrigérer sont disposées l'une à proximité de l'autre dans une même extrémité ouverte du noyau, l'extrémité opposée étant fermée, et définissant un chemin aller et un chemin retour, et est caractérisé par le fait que le carter est fabriqué par extrusion par percussion ou par fonte intégrant un réservoir à gaz dans l'extrémité fermée du carter.According to a first embodiment of the invention, the heat exchanger is of the "U" -shaped type in which the inlet and the outlet of the fluid to be refrigerated are disposed one close to the other in the same open end of the core, the opposite end being closed, and defining a path and a return path, and is characterized in that the housing is manufactured by extrusion by percussion or cast iron incorporating a gas reservoir in the closed end of the housing.
Conformément à un deuxième mode de réalisation de l'invention, où 1 ' échangeur de chaleur est du type en forme de "U", le carter est fabriqué par extrusion par percussion ou fonte intégrant en plus une connexion du fluide réfrigérant en forme de pont disposé dans l'extrémité ouverte du carter.According to a second embodiment of the invention, where the heat exchanger is of the "U" -shaped type, the casing is manufactured by percussion or cast extrusion further integrating a bridge-shaped refrigerant connection. disposed in the open end of the housing.
Conformément à un troisième mode de réalisation de l'invention, où 1 ' échangeur de chaleur est du type en forme de "U" , le carter est fabriqué par extrusion intégrant une connexion du fluide réfrigérant en forme de pont disposé dans l'extrémité ouverte du carter et une autre connexion du fluide réfrigérant en forme de tube disposé dans l'extrémité ouverte du carter et une autre connexion du fluide réfrigérant en forme de tube disposé dans un côté latéral, comme des supports de fixation sur une surface du compartiment moteur. rAccording to a third embodiment of the invention, wherein the heat exchanger is of the U-shaped type, the housing is manufactured by extrusion incorporating a connection of the bridge-shaped coolant disposed in the open end. and another connection of the tube-shaped refrigerant disposed in the open end of the housing and another connection of the tube-shaped refrigerant disposed in a lateral side, such as mounting brackets on a surface of the engine compartment. r
Conformément à un quatrième mode de réalisation de l'invention, où 1 ' échangeur de chaleur est du type en forme de "U", le carter est fabriqué en deux parties par un processus de fonte intégrant des connexions du fluide réfrigérant et des supports de fixation sur une surface du compartiment moteur .According to a fourth embodiment of the invention, where the heat exchanger is of the type in "U" shaped, the housing is manufactured in two parts by a melting process incorporating refrigerant connections and mounting brackets on a surface of the engine compartment.
Conformément à un cinquième mode de réalisation de l'invention, 1 ' échangeur de chaleur est du type linéaire dans lequel l'admission et la sortie du fluide à réfrigérer sont disposées l'une opposée à l'autre, et est caractérisé par le fait que le carter est fabriqué par extrusion par percussion intégrant un rebord de connexion à l'une de ses extrémités.According to a fifth embodiment of the invention, the heat exchanger is of the linear type in which the inlet and the outlet of the fluid to be refrigerated are disposed opposite one another, and is characterized by the fact that the casing is manufactured by percussion extrusion incorporating a connection flange at one of its ends.
BREVE DESCRIPTION DES DESSINS Afin de faciliter la description de ce qui a été exposé ci-dessus, nous joignons des dessins dans lesquels, schématiquement et à titre d'exemple non limitatif uniquement, nous représentons au moins un cas pratique de réalisation de l ' échangeur de chaleur pour gaz, en particulier pour les gaz d'échappement d'un moteur de l'invention, dans lesquels : la figure 1 est une vue en coupe longitudinale d'un échangeur de chaleur, selon un premier mode de réalisation de l'invention ; la figure 2 est une vue en perspective détaillée de 1 ' échangeur de chaleur de la figure 1 ; la figure 3 est une vue en perspective détaillée de 1 ' échangeur de chaleur, selon un deuxième mode de réalisation de l'invention ; la figure 4 est une vue en perspective détaillée de 1 ' échangeur de chaleur, selon un troisième mode de réalisation de 1 ' invention ; la figure 5 est une vue en perspective détaillée de 1 ' échangeur de chaleur, selon un quatrième mode de réalisation de l'invention ; et la figure 6 est une vue en perspective détaillée de 1 ' échangeur de chaleur, selon un cinquième mode de réalisation de l'invention. DESCRIPTION DE MODES DE REALISATION PREFERESBRIEF DESCRIPTION OF THE DRAWINGS In order to facilitate the description of what has been explained above, we enclose drawings in which, schematically and by way of non-limiting example only, we represent at least one practical case of embodiment of the exchanger of heat for gas, in particular for the exhaust gases of an engine of the invention, in which: FIG. 1 is a longitudinal sectional view of a heat exchanger, according to a first embodiment of the invention; invention; Figure 2 is a detailed perspective view of the heat exchanger of Figure 1; Figure 3 is a detailed perspective view of the heat exchanger according to a second embodiment of the invention; Figure 4 is a detailed perspective view of the heat exchanger according to a third embodiment of the invention; Figure 5 is a detailed perspective view of the heat exchanger according to a fourth embodiment of the invention; and Figure 6 is a detailed perspective view of the heat exchanger according to a fifth embodiment of the invention. DESCRIPTION OF PREFERRED EMBODIMENTS
Un premier mode de réalisation de 1 ' invention est montré aux figures 1 et 2.A first embodiment of the invention is shown in Figures 1 and 2.
L ' échangeur de chaleur 1 pour gaz, en particulier pour les gaz d'échappement d'un moteur, comprend un ensemble de conduits parallèles 2, lesquels dans le présent exemple sont plans et de coupe rectangulaire, destinés à la circulation des gaz avec un échange de chaleur avec un fluide de réfrigération. Ledit ensemble de conduits parallèles 2 est logé à l'intérieur d'un carter 3 qui dans le cas présent est également de coupe rectangulaire .The heat exchanger 1 for gas, in particular for the exhaust gases of an engine, comprises a set of parallel ducts 2, which in this example are flat and of rectangular section, intended for the circulation of gases with a heat exchange with a refrigeration fluid. Said set of parallel ducts 2 is housed inside a casing 3 which in this case is also of rectangular section.
Dans le cas présent, 1 ' échangeur de chaleur 1 est du type en forme de "U" dans lequel l'admission et la sortie du gaz à réfrigérer sont disposées l'une à proximité de l'autre dans une même extrémité ouverte de l'ensemble de conduits parallèles, l'extrémité opposée étant fermée, et définissant un chemin aller et un chemin retour.In the present case, the heat exchanger 1 is of the "U" -shaped type in which the inlet and the outlet of the gas to be cooled are arranged one close to the other in the same open end of the set of parallel conduits, the opposite end being closed, and defining a path and a return path.
L'une des extrémités de l'ensemble de conduits 2 est fixée à une plaque de support 4, laquelle présente une pluralité d'orifices pour le positionnement des conduits respectifs 2. Ladite plaque de support 4 est raccordée respectivement à une extrémité du carter 3 dans les zones 3a par brasage au four, soudage à l'arc ou au laser.One of the ends of the duct assembly 2 is fixed to a support plate 4, which has a plurality of orifices for the positioning of the respective ducts 2. Said support plate 4 is connected respectively to one end of the casing 3 in zones 3a by soldering in the oven, arc welding or laser welding.
L ' échangeur de chaleur 1 comporte un réservoir à gaz 5 raccordé à l'extrémité fermée du carter 3 dans les zones 3b par brasage au four, soudage à l'arc ou au laser .The heat exchanger 1 comprises a gas tank 5 connected to the closed end of the casing 3 in the zones 3b by furnace brazing, arc welding or laser welding.
Le carter 3 est fabriqué par un processus d'extrusion, ou d'extrusion par percussion ou de fonte, de telle sorte que ledit carter 3 puisse intégrer en une seule pièce le réservoir à gaz 5. L'intégration des composants dans le ' carter est supérieure quand le carter 3 est fabriqué par extrusion par percussion, et encore supérieure quand il est fabriqué par un processus de fonte. Cependant, le coût de fabrication de 1 ' échangeur de chaleur augmente progressivement à mesure qu'augmente l'intégration de ses composants.The casing 3 is manufactured by an extrusion process, or extrusion by percussion or cast iron, so that said casing 3 can integrate in one piece the gas reservoir 5. Integration of the components in the crankcase is higher when the housing 3 is manufactured by extrusion by percussion, and even greater when it is manufactured by a melting process. However, the manufacturing cost of the heat exchanger is gradually increasing as the integration of its components increases.
L'intégration des composants dans le carter s'avère très utile dans une large gamme d'applications, débouchant également sur une économie des coûts de production .The integration of the components in the crankcase is very useful in a wide range of applications, also leading to savings in production costs.
Un deuxième mode de réalisation de 1 ' invention est montré à la figure 3, où 1 ' échangeur de chaleur la est aussi du type en forme de "U", le carter 3 étant fabriqué par extrusion par percussion et intégrant de plus une connexion d'admission 6 du fluide réfrigérant en forme de pont disposé dans l'extrémité ouverte du carter 3. Dans ce cas, la connexion de sortie 7 du fluide réfrigérant qui présente une forme de tube est soudée au carter, comme elle ne peut être intégrée dans le carter extrudé par percussion,A second embodiment of the invention is shown in FIG. 3, where the heat exchanger is also of the "U" -shaped type, the casing 3 being made by percussion extrusion and further incorporating a plug connection. In this case, the outlet connection 7 of the refrigerant fluid which has a tube shape is welded to the housing, as it can not be integrated into the housing. the casing extruded by percussion,
Un troisième mode de réalisation de l'invention est montré à la figure 4, où 1 ' échangeur de chaleur Ib est aussi du type en forme de "U", le carter 3 étant fabriqué par un processus de fonte et intégrant la connexion d'admission 6 du fluide réfrigérant en forme de pont disposé dans l'extrémité ouverte du carter 3 et la connexion de sortie 7 du fluide réfrigérant en forme de tube disposé dans un côté latéral, ainsi que des supports de fixation 8 sur une surface du compartiment moteur.A third embodiment of the invention is shown in FIG. 4, in which the heat exchanger Ib is also of the "U" -shaped type, the casing 3 being manufactured by a melting process and incorporating the connection of intake 6 of the bridge-shaped coolant disposed in the open end of the housing 3 and the outlet connection 7 of the tube-shaped coolant disposed in a lateral side, as well as mounting brackets 8 on a surface of the engine compartment .
Un quatrième mode de réalisation de l'invention est montré à la figure 5, où 1 ' échangeur de chaleur Ic est aussi du type en forme de "U", le carter 3 étant fabriqué en deux parties par un processus de fonte et intégrant les connexions d'admission 6 et de sortie 7 du fluide ainsi que les supports de fixation 8.A fourth embodiment of the invention is shown in FIG. 5, where the heat exchanger Ic is also of the "U" shaped type, the casing 3 being made in two parts by a melting process and integrating the inlet 6 and outlet 7 fluid connections as well as the mounting brackets 8.
Un cinquième mode de réalisation de 1 ' invention est montré à la figure 6, où 1 ' échangeur de chaleur Id est du type linéaire dans lequel l'admission et la sortie du gaz à réfrigérer sont disposées l'une opposée à l'autre, le carter 3 étant fabriqué par extrusion par percussion et intégrant un rebord de connexion 9 dans l'une de ses extrémités. A fifth embodiment of the invention is shown in FIG. 6, where the heat exchanger Id is of the linear type in which the inlet and the outlet of the gas to be refrigerated are disposed opposite one another, the casing 3 being manufactured by percussion extrusion and incorporating a connection flange 9 at one of its ends.

Claims

REVENDICATIONS
1, Echangeur de chaleur (1-ld) pour gaz, lequel comprend un noyau (2) destiné a la circulation des gaz avec un échange thermique avec un fluide de réfrigération, un carter (3) métallique à l'intérieur duquel est logé ledit noyau (2), au moins une plaque de support (4) raccordée à au moins l'une des extrémités dudit noyau (2) et raccordée à son tour a une extrémité dudit carter (3), et au moins un réservoir à gaz (5} ou élément de connexion (9} raccordé à une extrémité dudit carter (3), caractérisé par le fait que ledit carter (3} peut intégrer en une seule pièce 1 ' au moins un réservoir à gaz (5) ou élément de connexion (9), des connexions d'admission et de sortie (6,7) du fluide de réfrigération et des supports de fixation (8) sur une surface du compartiment moteur, le carter (3) étant fabriqué par un processus d'extrusion ou d'extrusion par percussion ou de fonte.1, heat exchanger (1-ld) for gas, which comprises a core (2) for the circulation of gases with a heat exchange with a refrigeration fluid, a housing (3) metal inside which is housed said core (2), at least one support plate (4) connected to at least one end of said core (2) and connected in turn to one end of said housing (3), and at least one gas reservoir ( 5} or connecting element (9) connected to one end of said housing (3), characterized in that said housing (3) can integrate in one piece 1 'at least one gas tank (5) or connection element (9), intake and outlet connections (6, 7) of the refrigerating fluid and fixing brackets (8) on a surface of the engine compartment, the housing (3) being manufactured by an extrusion process or percussion or cast iron extrusion.
2, Echangeur de chaleur (1) selon la revendication 1, du type en forme de "U" dans lequel l'admission et la sortie du fluide à réfrigérer sont disposées l'une à proximité de l'autre dans une même extrémité ouverte du noyau (2), l'extrémité opposée étant fermée, et définissant un chemin aller et un chemin retour, caractérisé par le fait que le carter (3) est fabriqué par extrusion par percussion ou fonte intégrant un réservoir à gaz (5) dans l'extrémité fermée du carter.2, heat exchanger (1) according to claim 1, of the type in the form of "U" in which the inlet and the outlet of the fluid to be refrigerated are arranged one close to the other in the same open end of the core (2), the opposite end being closed, and defining a path and a return path, characterized in that the housing (3) is manufactured by extrusion by percussion or cast iron incorporating a gas reservoir (5) in the closed end of the housing.
3, Echangeur de chaleur (la) selon - la revendication 2, caractérisé par le fait que le carter (3) est fabriqué par extrusion par percussion intégrant de plus une connexion (6) du fluide réfrigérant en forme de pont disposé dans l'extrémité ouverte du carter (3 ) .3, heat exchanger (la) according to - claim 2, characterized in that the housing (3) is manufactured by percussion extrusion further integrating a connection (6) of the refrigerant bridge-shaped disposed in the end open housing (3).
4, Echangeur de chaleur (Ib) selon la revendication 2, caractérisé par le fait que le carter (3) est fabriqué par un processus de fonte intégrant une connexion {6} du fluide réfrigérant en forme de pont disposé dans l'extrémité ouverte du carter (3) et de plus une autre connexion (7) du fluide réfrigérant en forme de tube disposé dans un côté latéral, ainsi que des supports de fixation {8} sur une surface du compartiment moteur.4, heat exchanger (Ib) according to claim 2, characterized in that the casing (3) is manufactured by a melting process incorporating a connection {6} of the bridge-shaped coolant disposed in the open end of the housing (3) and further another connection (7) of the tube-shaped coolant disposed in a lateral side, as well as mounting brackets {8} on a surface of the engine compartment.
5. Echangeur de chaleur (Ic) selon la revendication 2, caractérisé par le fait que le carter5. Heat exchanger (Ic) according to claim 2, characterized in that the housing
(3) est fabriqué en deux parties par un processus de fonte intégrant des connexions (6,7) du fluide réfrigérant et des supports de fixation (8) sur une surface du compartiment moteur.(3) is manufactured in two parts by a melting process incorporating connections (6,7) of the refrigerant and mounting brackets (8) on a surface of the engine compartment.
6. Echangeur de chaleur (1) selon la revendication 1, du type linéaire dans lequel l'admission et la sortie du fluide à réfrigérer sont disposées l'une opposée à l'autre, caractérisé en ce que le carter (3) est fabriqué par extrusion par percussion intégrant un rebord de connexion (9) dans l'une de ses extrémités. 6. heat exchanger (1) according to claim 1, of the linear type in which the inlet and the outlet of the fluid to be refrigerated are disposed opposite one another, characterized in that the housing (3) is manufactured by percussion extrusion incorporating a connection flange (9) at one of its ends.
PCT/EP2008/059753 2007-08-10 2008-07-24 Heat exchanger for gas, particularly for the exhaust gases of an engine WO2009021823A1 (en)

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ES200702260A ES2336400B1 (en) 2007-08-10 2007-08-10 HEAT EXCHANGER FOR GASES, ESPECIALLY OF EXHAUST GASES OF AN ENGINE.
ESP200702260 2007-08-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011064090A3 (en) * 2009-11-30 2011-10-20 Valeo Termico, S.A. Heat exchanger having stacked plates
IT202000011749A1 (en) * 2020-05-20 2021-11-20 Costante Sesino S P A PROCEDURE FOR THE CONSTRUCTION OF A HEAT EXCHANGER AND RELATED HEAT EXCHANGER.

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Publication number Priority date Publication date Assignee Title
DE102005006055A1 (en) * 2005-02-10 2006-08-24 Medartis Ag Heat exchanger for exhaust gas of water-cooled combustion engine has part of inner heat jacket formed so that second volume is composed of at least two pockets
US20070029076A1 (en) * 2003-10-17 2007-02-08 Behr Gmbh & Co. Kg Heat exchanger, in particular for motor vehicles
DE102005054731A1 (en) * 2005-11-17 2007-05-24 Handtmann Systemtechnik Gmbh & Co. Kg Exhaust gas heat exchanger for motor vehicle, has coolant containing housing jacket, which consists of aluminum die casting, and exhaust gas conducting flat pipe, which consists of extruded aluminum section in curved U form
WO2007082774A2 (en) * 2006-01-23 2007-07-26 Behr Gmbh & Co. Kg Heat exchanger
WO2008006604A1 (en) * 2006-07-14 2008-01-17 Behr Gmbh & Co. Kg Device for cooling a gas flow of an internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070029076A1 (en) * 2003-10-17 2007-02-08 Behr Gmbh & Co. Kg Heat exchanger, in particular for motor vehicles
DE102005006055A1 (en) * 2005-02-10 2006-08-24 Medartis Ag Heat exchanger for exhaust gas of water-cooled combustion engine has part of inner heat jacket formed so that second volume is composed of at least two pockets
DE102005054731A1 (en) * 2005-11-17 2007-05-24 Handtmann Systemtechnik Gmbh & Co. Kg Exhaust gas heat exchanger for motor vehicle, has coolant containing housing jacket, which consists of aluminum die casting, and exhaust gas conducting flat pipe, which consists of extruded aluminum section in curved U form
WO2007082774A2 (en) * 2006-01-23 2007-07-26 Behr Gmbh & Co. Kg Heat exchanger
WO2008006604A1 (en) * 2006-07-14 2008-01-17 Behr Gmbh & Co. Kg Device for cooling a gas flow of an internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011064090A3 (en) * 2009-11-30 2011-10-20 Valeo Termico, S.A. Heat exchanger having stacked plates
ES2392302A1 (en) * 2009-11-30 2012-12-07 Valeo Térmico, S.A. Heat exchanger having stacked plates
IT202000011749A1 (en) * 2020-05-20 2021-11-20 Costante Sesino S P A PROCEDURE FOR THE CONSTRUCTION OF A HEAT EXCHANGER AND RELATED HEAT EXCHANGER.

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ES2336400B1 (en) 2011-03-10
ES2336400A1 (en) 2010-04-12

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