EP1627196A2 - Plate heat exchanger in particular a cooler for recirculated exhaust gases - Google Patents
Plate heat exchanger in particular a cooler for recirculated exhaust gasesInfo
- Publication number
- EP1627196A2 EP1627196A2 EP04742821A EP04742821A EP1627196A2 EP 1627196 A2 EP1627196 A2 EP 1627196A2 EP 04742821 A EP04742821 A EP 04742821A EP 04742821 A EP04742821 A EP 04742821A EP 1627196 A2 EP1627196 A2 EP 1627196A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- circulation
- plates
- exchanger according
- heat exchanger
- 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.)
- Withdrawn
Links
Classifications
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- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/32—Liquid-cooled heat exchangers
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- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
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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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
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- 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
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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
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction
Definitions
- Plate heat exchanger in particular cooler of recirculated exhaust gases.
- the invention relates to a heat exchanger for the heat exchange, between gases to be cooled and a coolant, comprising a heat exchange bundle constituted by a stack of plates determining between them channels for circulation of the gases to cool and coolant circulation channels.
- the pollution standards impose a recycling or a recirculation of part of the exhaust gases.
- the recirculated exhaust gases Before being mixed with the fresh combustion gases, the recirculated exhaust gases, the temperature of which can reach 500 ° C, must be cooled.
- This cooling is obtained by means of a heat exchanger, called a recirculating gas cooling exchanger.
- a heat exchanger of this type are generally made of stainless steel. They comprise a bundle made up of spacers and plates provided with an external rim designed to ensure the sealing of the exhaust gases. Gas inlet and outlet manifolds are brazed at the ends of the heat exchange bundle.
- the inlet and outlet manifolds consist of separate parts which must be assembled by soldering. This requires a surplus of material and results in additional bulk.
- the walls of the shell of the exchanger which are in contact with the exhaust gases, are at a very high temperature. They must therefore be made of a noble material such as stainless steel, which is expensive and which is difficult to shape.
- the subject of the invention is a heat exchanger, in particular a cooler for recirculated exhaust gases, which overcomes these drawbacks.
- each circulation channel of the gases to be cooled is between two circulation channels of the coolant.
- the heat exchange bundle is surrounded by an envelope comprising a first end wall contiguous to a first end plate of the bundle and a second end wall contiguous to a second end plate of the bundle , each end wall of the envelope defining a coolant circulation channel with the bundle end plate with which it is associated.
- the envelope of the heat exchanger is in contact with the coolant. It is protected from direct contact with the exhaust gases and its temperature is considerably lowered. It can therefore be made of an inexpensive and easy to work material such as an aluminum alloy. If necessary, the walls in contact with the gases are treated to resist corrosion.
- the bundle plates are stamped plates so as to comprise a cavity delimited by a flange, these plates being grouped in pairs and assembled by their flanges to define the channels for circulation of the coolant, with the exception of the first and second end plates which are joined by their edges respectively to the first and to the second end wall of the casing to form with each of them a channel for circulation of the coolant.
- the plates include ribs which delimit the circulation passages for the coolant and / or disturbing elements.
- each plate has a pressed protrusion is wherein December 'oupée an outflow opening of the cooling liquid, the bosses of a pair of plates being in abutment respectively on the bosses of the adjacent plate pairs.
- bosses thus delimit spaces between the surfaces of the plates in which the gases to be cooled can circulate.
- a secondary exchange surface or a disturbing element for example a corrugated interlayer, can advantageously be placed in the gas circulation channels to be cooled.
- the end plates are associated with the walls of the casing.
- the first and second end walls of the envelope have the general shape of a rectangle.
- the inlet tubing and the outlet tubing for the coolant are located on the same end wall of the envelope and along the same side of the rectangle, in particular the short side of this rectangle.
- the coolant supply and discharge pipes are close to each other.
- the inlet flange and the outlet flange of the gases to be cooled are located on the same end wall as the inlet and outlet pipes for the coolant. In this way, all the connections are located on the same side of the exchanger.
- the shell of the exchanger can be produced in many different ways.
- At least one of the end walls has a peripheral rim which envelops, at least partially, the heat exchange bundle of the exchanger so as to constitute a casing.
- Each end wall can thus constitute a half-casing, these two half-casings being connected according to a joint plane situated halfway up the heat exchange bundle.
- one of the plates can constitute a complete casing closed by a flat end plate.
- the envelope delimits free spaces on either side of the channels for circulation of the gases to be cooled in order to constitute inlet and outlet manifolds for these gases.
- the gas inlet and outlet flanges are connected to the enclosure at the level of the free spaces. Thus, it is not necessary to make and report separate inlet and outlet manifolds.
- the construction of the exchanger is simplified.
- FIG • - 1 is an exploded perspective view of a plate heat exchanger according to the invention;
- - Figure 2 is a top view of the heat exchanger of Figure 1;
- FIG. 3 is a partial sectional view on an enlarged scale along the line III -III of Figure 2;
- FIG. 4 is a partial sectional view on an enlarged scale along the line IV-IV of Figure 2.
- the heat exchanger shown in Figures 1 to 4 is a cooler of recirculated exhaust gases from an internal combustion engine of a motor vehicle. Indeed, the temperature of these gases is high and can reach 500 ° C at their exit from the engine. It is therefore necessary to cool them before re-mixing them with the fresh gases admitted into the combustion chambers. This cooling is carried out by heat exchange with a cooling liquid, generally brine.
- the cooler comprises two main parts, namely a heat exchange bundle, designated by the general reference 2, and an envelope which surrounds the bundle 2.
- the envelope consists of two half-casings, at namely an upper half-casing 6 and a lower half-casing 7.
- the bundle 2 consists of a stack of plates of generally elongated rectangular shape.
- it comprises four plates, namely an upper end plate 8, a lower end plate 10 and two common plates 12 matched to each other.
- Each plate has a bottom wall 14 and a peripheral rim 16 which defines with the bottom 14 a cavity in which the coolant circulates.
- ribs 18 are formed in the bottom wall in order to determine passes for the circulation of the coolant.
- each plate has three ribs which determine four passes (that is to say two round trips) for the coolant.
- each plate may include disturbing elements, such as projecting reliefs, intended to disturb the flow of the coolant and to improve the heat exchange.
- each plate has a boss (see Figure 3) located opposite the flange 16 and the ribs 18. An opening 22 is provided in the bottom wall of each boss 20 for the passage of the coolant.
- the upper half-casing 6 has a flat end wall 24 surrounded by a peripheral rim 26.
- the lower half-casing 7 has a lower end wall 28 surrounded by a peripheral rim 30.
- the peripheral rim 26 of the upper half-casing and the peripheral rim 30 of the lower half-casing meet along a joint plane so as to constitute a sealed envelope which entirely contains the bundle 2 of the exchanger.
- peripheral flanges 26 and 30 are determined in such a way that, when the two half-casings are assembled, the upper end wall 24 of the upper half-casing bears on the peripheral flange 16 of the end plate upper part and, in the same way, the end wall 28 of the lower half-casing 7 bears on the peripheral rim 16 of the lower end plate 10.
- each of the half-casings 6 and 7 comprises fixing lugs 31 which make it possible to mount the cooler of the exhaust gases on a structure.
- An inlet pipe 32 and an outlet pipe 34 for the coolant are provided on the upper half-casing. In the example, these two pipes are arranged along a short side of the upper half-casing, but other embodiments are possible.
- the upper half-casing 6 also comprises a flange 36 and a flange 38 allowing the connection of a supply line for the gases to be cooled and the evacuation of these gases. These flanges are fixed to collars 39 formed by stamping in the sheet metal constituting the upper half-casing.
- the coolant and gas pipes are all arranged on the same side of the exchanger, which facilitates their connection.
- the upper end plate 8 of the exchanger is assembled by its peripheral rim 16 to the end wall 24 of the upper half-casing 6.
- a circulation channel 40 of the coolant is assembled between these two walls.
- the lower end plate 10 is assembled by its peripheral rim 16 to the end wall 30 of the lower half-casing 7 so as to delimit a circulation channel 40 of the coolant.
- the two current or generic plates 12 - are assembled to each other by their peripheral edges 16 so as to delimit between their bottom wall 14 a circulation channel 42 for the coolant.
- the coolant circulation channel is delimited by the superposition of two plates, its height is twice that of the circulation channels 40.
- the boss 20 of one of the plates 12 comes into support with the boss 20 of the upper end plate 8, while the boss of the other plate 12 comes to bear on the boss 20 of the lower end plate 10.
- the example shown comprises only two generic plates , but it goes without saying that it could include more, it being understood that these plates are matched.
- the openings 22 made in the different bosses are in coincidence with each other in order to allow circulation of coolant.
- the bosses 20 determine a spacing between the bottom walls 14 of each of the plates 8, 10 and 12.
- secondary exchange surfaces 46, or disturbing elements, constituted for example by corrugated spacers, are arranged in the circulation channels 44 of the gases to be cooled.
- the height of each channel is twice the height of a boss 20.
- each channel 44 for circulation of the gases to be cooled is between two channels for circulation of the coolant.
- the cooler shown in the example comprises two circulation channels 44 each surrounded, respectively, by a channel 40 and by the central channel 42. Thanks to this characteristic, the upper half-casing 6 and the lower half-casing 7, and particularly the bottom walls 24 and 28 of these half-casings are not in contact with the gases to be cooled. On the contrary, the walls 24 and 28 are cooled by the circulation of the coolant in the channels 40.
- the temperature of the walls 24 and 28 is thus considerably lowered compared to the temperature of the end walls of a conventional exchanger. It can for example be of the order of 200 ° C.
- These walls can therefore be made of a material which is less resistant to temperature, such as aluminum. This advantage is appreciable because aluminum is easier to work and costs less than stainless steel.
- the general shape of the half-casings 6 and 7 corresponds to the shape of the beam plates.
- the half-casings have extensions 48 located on either side of the elongated sides of the plates of the exchanger. In this way, free spaces are defined on either side of the inlet and the outlet of the channels 44 for circulation of the gases to be cooled. These free spaces make it possible respectively to constitute an inlet manifold box and an outlet manifold box for the exhaust gases. They extend over the entire length of the plates, and particularly over the entire length of the channels 44.
- the extensions 48 have a very flat triangle shape. It goes without saying that they could have other shapes, for example a substantially rectangular shape.
- the fixing flanges 36 and 38 respectively intended for fixing a supply pipe and a pipe for discharging the gases to be cooled are arranged on the extensions 48 of the upper casing 6.
- a flange 36 could be arranged on a half-casing, while the other flange 38 would be arranged on the other half-casing.
- the exhaust gas cooler which has just been described has a very flat shape, due in particular to the small number of plates which it comprises. Its size is therefore small and it can be easily attached to another exchanger, for example a cooler of charge air.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a heat exchanger for the exchange of heat between gases for cooling and a cooling liquid, comprising a heat exchange bundle (2), made of a stack of plates (8, 10, 12), defining circulation channels between them for the gases for cooling and circulation channels for the cooling liquid. Each circulation channel for the gas for cooling is arranged between two circulation channels for the cooling liquid. The walls of the envelope surrounding the heat exchange bundle (2) are thus cooled by the cooling liquid. The above is of application to the cooling of the exhaust gases in motor vehicles.
Description
Echangeur de chaleur à plaques, notamment refroidlsseur des gaz d'échappement recirculés .Plate heat exchanger, in particular cooler of recirculated exhaust gases.
L'invention concerne un echangeur de chaleur pour l'échange de chaleur, entre des gaz à refroidir et un liquide de refroidissement, comprenant un faisceau d'échange de chaleur constitué par un empilement de plaques déterminant entre elles des canaux de circulation des gaz à refroidir et des canaux de circulation du liquide de refroidissement.The invention relates to a heat exchanger for the heat exchange, between gases to be cooled and a coolant, comprising a heat exchange bundle constituted by a stack of plates determining between them channels for circulation of the gases to cool and coolant circulation channels.
Sur un certain nombre de moteurs à combustion interne, en particulier sur les moteurs diesel suralimentés, les normes de pollution imposent un recyclage ou une recirculation d'une partie des gaz d'échappement. Préalablement à leur mélange avec les gaz de combustion frais, les gaz d'échappement recirculés, dont la température peut atteindre 500°C, doivent être refroidis.On a certain number of internal combustion engines, in particular on supercharged diesel engines, the pollution standards impose a recycling or a recirculation of part of the exhaust gases. Before being mixed with the fresh combustion gases, the recirculated exhaust gases, the temperature of which can reach 500 ° C, must be cooled.
Ce refroidissement est obtenu au moyen d'un echangeur de chaleur, appelé echangeur de refroidissement des gaz recirculés. Les échangeurs connus de ce type sont généralement réalisés en acier inoxydable. Ils comportent un faisceau composé d'intercalaires et de plaques munies d'un rebord extérieur conçu pour assurer 1 ' étanchéité aux gaz d'échappement. Des boîtes collectrices d'entrée et de sortie pour les gaz sont brasées aux extrémités du faisceau d'échange de chaleur.This cooling is obtained by means of a heat exchanger, called a recirculating gas cooling exchanger. Known exchangers of this type are generally made of stainless steel. They comprise a bundle made up of spacers and plates provided with an external rim designed to ensure the sealing of the exhaust gases. Gas inlet and outlet manifolds are brazed at the ends of the heat exchange bundle.
Ces refroidisseurs connus présentent plusieurs inconvénients. Les boîtes collectrices d'entrée et de sortie sont constituées par des pièces séparées qui doivent être assemblées par brasage. Cela nécessite un surplus de matière et entraîne un encombrement supplémentaire. D'autre part, les parois de l'enveloppe de l'échangeur, qui sont en contact avec les gaz d'échappement, sont à une température très élevée. Elles doivent par conséquent être réalisées dans un matériau noble tel que l'acier inoxydable, qui est coûteux et qui est difficile à mettre en forme.
L'invention a pour objet un echangeur de chaleur, en particulier un refroidisseur des gaz d'échappement recirculés, qui remédie à ces inconvénients.These known coolers have several drawbacks. The inlet and outlet manifolds consist of separate parts which must be assembled by soldering. This requires a surplus of material and results in additional bulk. On the other hand, the walls of the shell of the exchanger, which are in contact with the exhaust gases, are at a very high temperature. They must therefore be made of a noble material such as stainless steel, which is expensive and which is difficult to shape. The subject of the invention is a heat exchanger, in particular a cooler for recirculated exhaust gases, which overcomes these drawbacks.
Ces buts sont atteints par le fait que chaque canal de circulation des gaz à refroidir est compris entre deux canaux de circulation du liquide de refroidissement.These goals are achieved by the fact that each circulation channel of the gases to be cooled is between two circulation channels of the coolant.
De préférence, le faisceau d'échange de chaleur est entouré d'une enveloppe comportant une première paroi d'extrémité accolée à une première plaque d'extrémité du faisceau et une seconde paroi d'extrémité accolée à une seconde plaque d'extrémité du faisceau, chaque paroi d'extrémité de l'enveloppe définissant un canal de circulation du liquide de refroidissement avec la plaque d'extrémité du faisceau à laquelle elle est associée.Preferably, the heat exchange bundle is surrounded by an envelope comprising a first end wall contiguous to a first end plate of the bundle and a second end wall contiguous to a second end plate of the bundle , each end wall of the envelope defining a coolant circulation channel with the bundle end plate with which it is associated.
Grâce à cette caractéristique, l'enveloppe de l'échangeur de chaleur est en contact avec le liquide de refroidissement. II est protégé du contact direct avec les gaz d'échappement et sa température est considérablement abaissée. Il peut, par conséquent, être réalisé en un matériau peu coûteux et facile à travailler tel qu'un alliage d'aluminium. Si besoin est, les parois en contact avec les gaz sont traitées pour résister à la corrosion.Thanks to this characteristic, the envelope of the heat exchanger is in contact with the coolant. It is protected from direct contact with the exhaust gases and its temperature is considerably lowered. It can therefore be made of an inexpensive and easy to work material such as an aluminum alloy. If necessary, the walls in contact with the gases are treated to resist corrosion.
Dans une réalisation préférée, les plaques du faisceau sont des plaques embouties de manière à comporter une cavité délimitée par un rebord, ces plaques étant groupées par paire et assemblées par leurs rebords pour définir les canaux de circulation du liquide de refroidissement, à l'exception de la première et de la seconde plaque d'extrémité qui sont assemblées par leur rebords respectivement à la première et à la seconde paroi d'extrémité de l'enveloppe pour former avec chacune d'elles un canal de circulation du liquide de refroidissement.
Cette caractéristique permet de réaliser un echangeur de chaleur très plat, peu encombrant, qui peut être monté aisément sur un autre echangeur, par exemple un refroidisseur de l'air de suralimentation du moteur.In a preferred embodiment, the bundle plates are stamped plates so as to comprise a cavity delimited by a flange, these plates being grouped in pairs and assembled by their flanges to define the channels for circulation of the coolant, with the exception of the first and second end plates which are joined by their edges respectively to the first and to the second end wall of the casing to form with each of them a channel for circulation of the coolant. This characteristic makes it possible to produce a very flat, space-saving heat exchanger which can be easily mounted on another exchanger, for example a cooler for the engine charge air.
Avantageusement, les plaques comportent des nervures qui délimitent des passes de circulation du liquide de refroidissement et/ou des éléments perturbateurs.Advantageously, the plates include ribs which delimit the circulation passages for the coolant and / or disturbing elements.
Dans une réalisation particulière, chaque plaque comporte un bossage embouti dans lequel est déc'oupée une ouverture de circulation du liquide de refroidissement, les bossages d'une paire de plaques étant en appui respectivement sur les bossages des paires de plaques adjacentes.In a particular embodiment, each plate has a pressed protrusion is wherein December 'oupée an outflow opening of the cooling liquid, the bosses of a pair of plates being in abutment respectively on the bosses of the adjacent plate pairs.
Ces bossages délimitent ainsi des espaces entre les surfaces des plaques dans lesquelles peuvent circuler les gaz à refroidir. Une surface d'échange secondaire ou un élément perturbateur, par exemple un intercalaire ondulé, peut avantageusement être disposé dans les canaux de circulation des gaz à refroidir.These bosses thus delimit spaces between the surfaces of the plates in which the gases to be cooled can circulate. A secondary exchange surface or a disturbing element, for example a corrugated interlayer, can advantageously be placed in the gas circulation channels to be cooled.
Toutefois, à chacune des extrémités de l! echangeur, les plaques d'extrémité sont associées aux parois de l'enveloppe.However, at each end of the! exchanger, the end plates are associated with the walls of the casing.
Généralement, la première et la seconde paroi d'extrémité de l'enveloppe présentent la forme générale d'un rectangle.Generally, the first and second end walls of the envelope have the general shape of a rectangle.
Avantageusement, la tubulure d'entrée et la tubulure de sortie du liquide de refroidissement sont situées sur une même paroi d'extrémité de l'enveloppe et le long d'un même côté du rectangle, notamment le petit côté de ce rectangle. Ainsi, les canalisations d'amenée et d'évacuation du liquide de refroidissement sont proches l'une de l'autre. Cette disposition facilite leur installation et réduit 1 ' encombrement .
Avantageusement encore, la bride d'entrée et la bride de sortie des gaz à refroidir sont situées sur la même paroi d'extrémité que les tubulures d'entrée et de sortie du liquide de refroidissement. De cette manière, tous les raccordements sont situés d'un même côté de l'échangeur.Advantageously, the inlet tubing and the outlet tubing for the coolant are located on the same end wall of the envelope and along the same side of the rectangle, in particular the short side of this rectangle. Thus, the coolant supply and discharge pipes are close to each other. This arrangement facilitates their installation and reduces the size. Advantageously also, the inlet flange and the outlet flange of the gases to be cooled are located on the same end wall as the inlet and outlet pipes for the coolant. In this way, all the connections are located on the same side of the exchanger.
L'enveloppe de l'échangeur peut être réalisée de nombreuses manières différentes.The shell of the exchanger can be produced in many different ways.
Dans une réalisation préférée, l'une au moins des parois d'extrémité comporte un rebord périphérique qui enveloppe, au moins partiellement, le faisceau d'échange de chaleur de l'échangeur de manière à constituer un carter.In a preferred embodiment, at least one of the end walls has a peripheral rim which envelops, at least partially, the heat exchange bundle of the exchanger so as to constitute a casing.
Chaque paroi d'extrémité peut ainsi constituer un demi- carter, ces deux demi-carters se raccordant selon un plan de joint situé à mi-hauteur du faisceau d'échange de chaleur. Ou bien, l'une des plaques peut constituer un carter complet fermé par une plaque d'extrémité plane.Each end wall can thus constitute a half-casing, these two half-casings being connected according to a joint plane situated halfway up the heat exchange bundle. Or, one of the plates can constitute a complete casing closed by a flat end plate.
L'enveloppe délimite des espaces libres de part et d'autre des canaux de circulation des gaz à refroidir afin de constituer des boîtes collectrices d'entrée et de sortie pour ces gaz.The envelope delimits free spaces on either side of the channels for circulation of the gases to be cooled in order to constitute inlet and outlet manifolds for these gases.
Les brides d'entrée et de sortie des gaz sont raccordées à l'enveloppe au niveau des espaces libres. Ainsi, il n'est pas nécessaire de réaliser et de rapporter des boîtes collectrices d'entrée et de sortie séparées. La réalisation de l'échangeur est simplifiée.The gas inlet and outlet flanges are connected to the enclosure at the level of the free spaces. Thus, it is not necessary to make and report separate inlet and outlet manifolds. The construction of the exchanger is simplified.
D'autres caractéristiques et avantages de l'invention apparaîtront encore à la lecture de la description qui suit d'exemples de réalisation donnés à titre illustratif, en référence aux figures annexées. Sur ces figures :Other characteristics and advantages of the invention will become apparent on reading the following description of exemplary embodiments given by way of illustration, with reference to the appended figures. In these figures:
la figure •- 1 est une vue éclatée en perspective d'un echangeur de chaleur à plaques conforme à l'invention ;
- la figure 2 est une vue de dessus de l'échangeur de chaleur de la figure 1 ;Figure • - 1 is an exploded perspective view of a plate heat exchanger according to the invention; - Figure 2 is a top view of the heat exchanger of Figure 1;
- la figure 3 est une vue en coupe partielle à échelle agrandie selon la ligne III -III de la figure 2 ; et- Figure 3 is a partial sectional view on an enlarged scale along the line III -III of Figure 2; and
- la figure 4 est une vue en coupe partielle à échelle agrandie selon la ligne IV-IV de la figure 2.- Figure 4 is a partial sectional view on an enlarged scale along the line IV-IV of Figure 2.
L'échangeur de chaleur représenté sur les figures 1 à 4 est un refroidisseur des gaz d'échappement recirculés provenant d'un moteur à combustion interne de véhicule automobile. En effet, la température de ces gaz est élevée et peut atteindre 500°C à leur sortie du moteur. Il est donc nécessaire de les refroidir avant de les remélanger aux gaz frais admis dans les chambres de combustion. Ce refroidissement est effectué par échange de chaleur avec un liquide de refroidissement, généralement de l'eau glycolée .The heat exchanger shown in Figures 1 to 4 is a cooler of recirculated exhaust gases from an internal combustion engine of a motor vehicle. Indeed, the temperature of these gases is high and can reach 500 ° C at their exit from the engine. It is therefore necessary to cool them before re-mixing them with the fresh gases admitted into the combustion chambers. This cooling is carried out by heat exchange with a cooling liquid, generally brine.
Le refroidisseur comprend deux parties principales, à savoir un faisceau d'échange de chaleur, désigné par la référence générale 2, et une enveloppe qui entoure le faisceau 2. Dans l'exemple, l'enveloppe est constituée de deux demi-carters, à savoir un demi-carter supérieur 6 et un demi-carter inférieur 7.The cooler comprises two main parts, namely a heat exchange bundle, designated by the general reference 2, and an envelope which surrounds the bundle 2. In the example, the envelope consists of two half-casings, at namely an upper half-casing 6 and a lower half-casing 7.
Le faisceau 2 est constitué d'un empilement de plaques de forme générale rectangulaire allongée. Dans l'exemple, il comprend quatre plaques, à savoir une plaque d'extrémité supérieure 8, une plaque d'extrémité inférieure 10 et deux plaques courantes 12 appariées l'une à l'autre. Chaque plaque comporte une paroi de fond 14 et un rebord périphérique 16 qui délimite avec le fond 14 une cavité dans laquelle circule le liquide de refroidissement. De préférence, des nervures 18 sont formées dans la paroi de fond afin de déterminer des passes pour la circulation du liquide de refroidissement.
Dans l'exemple, chaque plaque comporte trois nervures qui déterminent quatre passes (c'est-à-dire deux allers et retours) pour le liquide de refroidissement. De plus, chaque plaque peut comporter des éléments perturbateurs, tels que des reliefs en saillie, destinés à perturber l'écoulement du liquide de refroidissement et à améliorer l'échange de chaleur. En outre, chaque plaque comporte un bossage (voir figure 3) situé à l'opposé du rebord 16 et des nervures 18. Une ouverture 22 est prévue dans la paroi de fond de chaque bossage 20 pour le passage du liquide de refroidissement.The bundle 2 consists of a stack of plates of generally elongated rectangular shape. In the example, it comprises four plates, namely an upper end plate 8, a lower end plate 10 and two common plates 12 matched to each other. Each plate has a bottom wall 14 and a peripheral rim 16 which defines with the bottom 14 a cavity in which the coolant circulates. Preferably, ribs 18 are formed in the bottom wall in order to determine passes for the circulation of the coolant. In the example, each plate has three ribs which determine four passes (that is to say two round trips) for the coolant. In addition, each plate may include disturbing elements, such as projecting reliefs, intended to disturb the flow of the coolant and to improve the heat exchange. In addition, each plate has a boss (see Figure 3) located opposite the flange 16 and the ribs 18. An opening 22 is provided in the bottom wall of each boss 20 for the passage of the coolant.
Le demi-carter supérieur 6 comporte une paroi d'extrémité plane 24 entourée par un rebord périphérique 26. De la même manière, le demi-carter inférieur 7 comporte une paroi d'extrémité inférieure 28 entourée par un rebord périphérique 30. Comme on peut le voir en particulier sur la figure 3, le rebord périphérique 26 du demi-carter supérieur et le rebord périphérique 30 du demi-carter inférieur se rejoignent selon un plan de joint de manière à constituer une enveloppe êtanche qui contient entièrement le faisceau 2 de l'échangeur. Les dimensions des rebords périphériques 26 et 30 sont déterminées de telle manière que, lorsque les deux demi-carters sont assemblés, la paroi d'extrémité supérieure 24 du demi-carter supérieur vient en appui sur le rebord périphérique 16 de la plaque d'extrémité supérieure et, de la même manière, la paroi d'extrémité 28 du demi- carter inférieur 7 vient en appui sur le rebord périphérique 16 de la plaque d'extrémité inférieure 10.The upper half-casing 6 has a flat end wall 24 surrounded by a peripheral rim 26. Similarly, the lower half-casing 7 has a lower end wall 28 surrounded by a peripheral rim 30. As can be see it in particular in FIG. 3, the peripheral rim 26 of the upper half-casing and the peripheral rim 30 of the lower half-casing meet along a joint plane so as to constitute a sealed envelope which entirely contains the bundle 2 of the exchanger. The dimensions of the peripheral flanges 26 and 30 are determined in such a way that, when the two half-casings are assembled, the upper end wall 24 of the upper half-casing bears on the peripheral flange 16 of the end plate upper part and, in the same way, the end wall 28 of the lower half-casing 7 bears on the peripheral rim 16 of the lower end plate 10.
En outre, chacun des demi-carters 6 et 7 comporte des pattes de fixation 31 qui permettent de monter le refroidisseur des gaz d'échappement sur une structure. Une tubulure d'entrée 32 et une tubulure de sortie 34 pour le liquide de refroidissement sont prévues sur le demi-carter supérieur. Dans l'exemple, ces deux tubulures sont disposées le long d'un petit côté du demi-carter supérieur, mais d'autres réalisations sont possibles. Le demi- carter supérieur 6
comporte également une bride 36 et une bride 38 permettant le raccordement d'une canalisation d'amenée des gaz à refroidir et l'évacuation de ces gaz. Ces brides sont fixées à des collets 39 formés par emboutissage dans la tôle constituant le demi carter supérieur. Ainsi, dans l'exemple, les tubulures de liquide de refroidissement et de gaz sont toutes disposées du même côté de l'échangeur, ce qui facilite leur raccordement.In addition, each of the half-casings 6 and 7 comprises fixing lugs 31 which make it possible to mount the cooler of the exhaust gases on a structure. An inlet pipe 32 and an outlet pipe 34 for the coolant are provided on the upper half-casing. In the example, these two pipes are arranged along a short side of the upper half-casing, but other embodiments are possible. The upper half-casing 6 also comprises a flange 36 and a flange 38 allowing the connection of a supply line for the gases to be cooled and the evacuation of these gases. These flanges are fixed to collars 39 formed by stamping in the sheet metal constituting the upper half-casing. Thus, in the example, the coolant and gas pipes are all arranged on the same side of the exchanger, which facilitates their connection.
Comme on peut le voir en particulier sur la figure 3, la plaque d'extrémité supérieure 8 de l'échangeur est assemblée par son rebord périphérique 16 à la paroi d'extrémité 24 du demi-carter supérieur 6. On délimite ainsi, entre ces deux parois, un canal de circulation 40 du liquide de refroidissement. De la même manière, la plaque d'extrémité inférieure 10 est assemblée par son rebord périphérique 16 à la paroi d'extrémité 30 du demi-carter inférieur 7 de manière à délimiter un canal de circulation 40 du liquide de refroidissement. Les deux plaques courantes ou génériques 12 - sont assemblées l'une à l'autre par leurs rebords périphériques 16 de manière à délimiter entre leur paroi de fond 14 un canal de circulation 42 pour le liquide de refroidissement .As can be seen in particular in FIG. 3, the upper end plate 8 of the exchanger is assembled by its peripheral rim 16 to the end wall 24 of the upper half-casing 6. Thus, between these two walls, a circulation channel 40 of the coolant. Likewise, the lower end plate 10 is assembled by its peripheral rim 16 to the end wall 30 of the lower half-casing 7 so as to delimit a circulation channel 40 of the coolant. The two current or generic plates 12 - are assembled to each other by their peripheral edges 16 so as to delimit between their bottom wall 14 a circulation channel 42 for the coolant.
Etant donné que, dans ce cas, le canal de circulation du fluide de refroidissement est délimité par la superposition de deux plaques, sa hauteur est le double de celle des canaux de circulation 40. Le bossage 20 de l'une des plaques 12 vient en appui avec le bossage 20 de la plaque d'extrémité supérieure 8, tandis que le bossage de l'autre plaque 12 vient en appui sur le bossage 20 de la plaque d'extrémité inférieure 10. L'exemple représenté ne comporte que deux plaques génériques, mais il va de .soi qu'il pourrait en comporter davantage, étant entendu que ces plaques sont appariées .Since, in this case, the coolant circulation channel is delimited by the superposition of two plates, its height is twice that of the circulation channels 40. The boss 20 of one of the plates 12 comes into support with the boss 20 of the upper end plate 8, while the boss of the other plate 12 comes to bear on the boss 20 of the lower end plate 10. The example shown comprises only two generic plates , but it goes without saying that it could include more, it being understood that these plates are matched.
Les ouvertures 22 pratiquées dans les différents bossages sont en coïncidence les unes avec les autres afin de
permettre la circulation du liquide de refroidissement. Simultanément, les bossages 20 déterminent un écartement entre les parois de fond 14 de chacune des plaques 8, 10 et 12. De préférence des surfaces d'échange secondaires 46, ou éléments perturbateurs, constitués par exemple par des intercalaires ondulés, sont disposées dans les canaux de circulation 44 des gaz à refroidir. La hauteur de chaque canal est égale à deux fois la hauteur d'un bossage 20.The openings 22 made in the different bosses are in coincidence with each other in order to allow circulation of coolant. Simultaneously, the bosses 20 determine a spacing between the bottom walls 14 of each of the plates 8, 10 and 12. Preferably secondary exchange surfaces 46, or disturbing elements, constituted for example by corrugated spacers, are arranged in the circulation channels 44 of the gases to be cooled. The height of each channel is twice the height of a boss 20.
Conformément à l'invention, chaque canal 44 de circulation des gaz à refroidir est compris entre deux canaux de circulation du liquide de refroidissement. Le refroidisseur représenté dans 1 ' exemple comporte deux canaux de circulation 44 entourés chacun, respectivement, par un canal 40 et par le canal central 42. Grâce à cette caractéristique, le demi-carter supérieur 6 et le demi- carter inférieur 7, et particulièrement les parois de fond 24 et 28 de ces demi-carters ne sont pas en contact avec les gaz à refroidir. Au contraire, les parois 24 et 28 sont refroidies par la circulation du liquide de refroidissement dans les canaux 40. La température des parois 24 et 28 est ainsi considérablement abaissée par rapport à la température des parois d'extrémité d'un echangeur classique. Elle peut par exemple être de l'ordre de 200°C. Ces parois peuvent donc être réalisées dans un matériau qui résiste moins à la température, comme l'aluminium. Cet avantage est appréciable parce que 1 ' aluminium est plus facile à travailler et revient moins cher que l'acier inoxydable.According to the invention, each channel 44 for circulation of the gases to be cooled is between two channels for circulation of the coolant. The cooler shown in the example comprises two circulation channels 44 each surrounded, respectively, by a channel 40 and by the central channel 42. Thanks to this characteristic, the upper half-casing 6 and the lower half-casing 7, and particularly the bottom walls 24 and 28 of these half-casings are not in contact with the gases to be cooled. On the contrary, the walls 24 and 28 are cooled by the circulation of the coolant in the channels 40. The temperature of the walls 24 and 28 is thus considerably lowered compared to the temperature of the end walls of a conventional exchanger. It can for example be of the order of 200 ° C. These walls can therefore be made of a material which is less resistant to temperature, such as aluminum. This advantage is appreciable because aluminum is easier to work and costs less than stainless steel.
La forme générale des demi-carters 6 et 7 correspond à la forme des plaques du faisceau. Toutefois, les demi-carters comportent des prolongements 48 situés de part et d'autre des côtés allongés des plaques de l'échangeur. De cette manière, on définit des espaces libres de part et d'autre de l'entrée et de la sortie des canaux 44 de circulation des gaz à refroidir. Ces espaces libres permettent de constituer respectivement une boîte collectrice d'entrée et une boîte collectrice de sortie pour les gaz d'échappement. Ils
s'étendent sur toute la longueur des plaques, et particulièrement sur toute la longueur des canaux 44. Dans l'exemple, les prolongements 48 présentent une forme de triangle très aplatie. Il va de soi qu'ils pourraient présenter d'autres formes, par exemple une forme sensiblement rectangulaire. Les brides de fixation 36 et 38 destinées respectivement à la fixation d'une canalisation d'amenée et d'une canalisation d'évacuation des gaz à refroidir sont disposées sur les prolongements 48 du carter supérieur 6. Toutefois, en variante de réalisation, une bride 36 pourrait être disposée sur un demi-carter, tandis que l'autre bride 38 serait disposée sur l'autre demi- carter .The general shape of the half-casings 6 and 7 corresponds to the shape of the beam plates. However, the half-casings have extensions 48 located on either side of the elongated sides of the plates of the exchanger. In this way, free spaces are defined on either side of the inlet and the outlet of the channels 44 for circulation of the gases to be cooled. These free spaces make it possible respectively to constitute an inlet manifold box and an outlet manifold box for the exhaust gases. They extend over the entire length of the plates, and particularly over the entire length of the channels 44. In the example, the extensions 48 have a very flat triangle shape. It goes without saying that they could have other shapes, for example a substantially rectangular shape. The fixing flanges 36 and 38 respectively intended for fixing a supply pipe and a pipe for discharging the gases to be cooled are arranged on the extensions 48 of the upper casing 6. However, in an alternative embodiment, a flange 36 could be arranged on a half-casing, while the other flange 38 would be arranged on the other half-casing.
Grâce à cette caractéristique, il n'est pas nécessaire de réaliser des boîtes collectrices séparées pour les gaz, qui doivent être assemblées par brasage au reste de l'échangeur. On réalise par conséquent une économie de matière et on réduit le nombre d'opérations nécessaires à la fabrication de l'échangeur.Thanks to this characteristic, it is not necessary to produce separate manifolds for the gases, which must be assembled by brazing to the rest of the exchanger. Consequently, material is saved and the number of operations necessary for manufacturing the exchanger is reduced.
Le refroidisseur des gaz d'échappement qui vient d'être décrit présente une forme très plane, en raison notamment du faible nombre de plaques qu'il comporte. Son encombrement est donc peu important et il peut être fixé aisément sur un autre echangeur, par exemple un ref oidisseur d'air de suralimentation.
The exhaust gas cooler which has just been described has a very flat shape, due in particular to the small number of plates which it comprises. Its size is therefore small and it can be easily attached to another exchanger, for example a cooler of charge air.
Claims
1. Echangeur de chaleur pour 1 ' échange de chaleur entre des gaz à refroidir et un liquide de refroidissement, comprenant un faisceau d'échange de chaleur (2) constitué par un empilement de plaques (8, 10, 12) déterminant entre elles des canaux (44) de circulation des gaz à refroidir et des canaux (40, 42) de circulation du liquide de refroidissement, caractérisé en ce que chaque canal (44) de circulation du gaz à refroidir est compris entre deux canaux (40, 42) de circulation du liquide de refroidissement.1. Heat exchanger for heat exchange between gases to be cooled and a coolant, comprising a heat exchange bundle (2) constituted by a stack of plates (8, 10, 12) determining between them channels (44) for circulation of the gases to be cooled and channels (40, 42) for circulation of the coolant, characterized in that each channel (44) for circulation of the gas to be cooled is between two channels (40, 42) coolant circulation.
2. Echangeur selon la revendication 1, caractérisé en ce que le faisceau (2) est entouré d'une enveloppe comportant une première paroi d'extrémité (24) accolée à une première plaque d'extrémité (8) du faisceau et une deuxième paroi d'extrémité (28) accolée à une deuxième plaque d'extrémité (10) du faisceau (2), chaque paroi d'extrémité, (24, 28) définissant un canal (40) de circulation du liquide de refroidissement avec la plaque d'extrémité (8, 10) à laquelle elle est associée.2. Exchanger according to claim 1, characterized in that the bundle (2) is surrounded by an envelope comprising a first end wall (24) attached to a first end plate (8) of the bundle and a second wall end (28) attached to a second end plate (10) of the bundle (2), each end wall (24, 28) defining a channel (40) for circulation of the coolant with the plate d end (8, 10) with which it is associated.
3. Echangeur selon la revendication 2 dans lequel lesdites première et deuxième parois d'extrémité (24,28) sont en alliage d'aluminium.3. Exchanger according to claim 2 wherein said first and second end walls (24,28) are made of aluminum alloy.
4. Echangeur de chaleur selon l'une des revendications 1 et 3, caractérisé en ce que les plaques (8, 10, 12) sont des plaques embouties de manière à comporter une cavité délimitée par un rebord (16) , ces plaques étant groupées par paires et assemblées par leurs rebords (16) pour définir des canaux (42) de circulation du fluide de refroidissement, à l'exception de la première et de la seconde plaque d'extrémité (8, 10) qui sont assemblées par leurs rebords (16) respectivement à la première et à la seconde paroi d'extrémité (24, 28) de l'enveloppe pour former avec elle un canal (40) de circulation du fluide à refroidir. 4. Heat exchanger according to one of claims 1 and 3, characterized in that the plates (8, 10, 12) are stamped plates so as to comprise a cavity delimited by a flange (16), these plates being grouped in pairs and joined by their edges (16) to define channels (42) for circulation of the coolant, except for the first and second end plates (8, 10) which are joined by their edges (16) respectively to the first and to the second end wall (24, 28) of the envelope to form with it a channel (40) for circulation of the fluid to be cooled.
5. Echangeur de chaleur selon l'une des revendications 1 à5. Heat exchanger according to one of claims 1 to
4, caractérisé en ce que les plaques comportent des nervures (18) qui délimitent des passes de circulation du liquide de refroidissement et/ou des éléments perturbateurs.4, characterized in that the plates have ribs (18) which delimit the coolant circulation passes and / or the disturbing elements.
6. Echangeur de chaleur selon l'une des revendications 1 à6. Heat exchanger according to one of claims 1 to
5, caractérisé en ce que chaque plaque comporte un bossage embouti (20) dans lequel est découpée une ouverture (22) de circulation du fluide de refroidissement, les bossages (20) d'une paire de plaques (12) étant en appui respectivement sur les bossages des paires de plaques adjacentes.5, characterized in that each plate comprises a stamped boss (20) in which is cut an opening (22) for circulation of the coolant, the bosses (20) of a pair of plates (12) being supported respectively on the bosses of the pairs of adjacent plates.
7. Echangeur de chaleur selon l'une des revendications 1 à7. Heat exchanger according to one of claims 1 to
6, caractérisé en ce que la première et la deuxième paroi d'extrémité (24, 28) de l'enveloppe présentent la forme générale d'un rectangle et en ce qu'il comporte une tubulure d'entrée (32) et une tubulure de sortie (34) du liquide de refroidissement situées sur la même paroi d'extrémité (24) de l'enveloppe et le long d'un même côté du rectangle.6, characterized in that the first and the second end wall (24, 28) of the envelope have the general shape of a rectangle and in that it comprises an inlet pipe (32) and a pipe outlet (34) of the coolant located on the same end wall (24) of the envelope and along the same side of the rectangle.
8. Echangeur de chaleur selon la revendication 7, caractérisé en .ce que la tubulure d'entrée (32) et la tubulure de sortie (34) du liquide de refroidissement sont situées le long d'un petit côté du rectangle.8. Heat exchanger according to claim 7, characterized in .ce that the inlet pipe (32) and the outlet pipe (34) of the coolant are located along a small side of the rectangle.
9. Echangeur selon l'une des revendications 7 ou 8, caractérisé en ce qu'il comporte une bride d'entrée (36) et une bride de sortie (38) des gaz à refroidir situées sur la même paroi d'extrémité (24) que les tubulures d'entrée et de sortie (32, 34) du liquide de refroidissement.9. Exchanger according to one of claims 7 or 8, characterized in that it comprises an inlet flange (36) and an outlet flange (38) of the gases to be cooled located on the same end wall (24 ) that the inlet and outlet pipes (32, 34) of the coolant.
10. Echangeur selon l'une des revendications 1 à 9, caractérisé en ce qu'une au moins des parois d'extrémité (24, 28), comporte un rebord périphérique (26) qui enveloppe au moins partiellement le faisceau (2) d'échange de chaleur de manière à constituer un carter. 10. Exchanger according to one of claims 1 to 9, characterized in that at least one of the end walls (24, 28), comprises a peripheral rim (26) which at least partially envelops the bundle (2) d heat exchange so as to constitute a casing.
11. Echangeur de chaleur selon l'une des revendications 1 à 10, caractérisé en ce que l'enveloppe délimite des espaces libres de part et d'autre des canaux (44) de circulation des gaz à refroidir afin de constituer des boîtes collectrices d'entrée et de sortie pour ces gaz. 11. Heat exchanger according to one of claims 1 to 10, characterized in that the envelope delimits free spaces on either side of the channels (44) for circulation of the gases to be cooled in order to constitute manifolds d inlet and outlet for these gases.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0306417A FR2855602A1 (en) | 2003-05-27 | 2003-05-27 | PLATE HEAT EXCHANGER, IN PARTICULAR COOLER FOR RECIRCULATED EXHAUST GASES |
PCT/FR2004/001283 WO2004106834A2 (en) | 2003-05-27 | 2004-05-25 | Plate heat exchanger in particular a cooler for recirculated exhaust gases |
Publications (1)
Publication Number | Publication Date |
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EP1627196A2 true EP1627196A2 (en) | 2006-02-22 |
Family
ID=33427475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP04742821A Withdrawn EP1627196A2 (en) | 2003-05-27 | 2004-05-25 | Plate heat exchanger in particular a cooler for recirculated exhaust gases |
Country Status (4)
Country | Link |
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EP (1) | EP1627196A2 (en) |
KR (1) | KR20060023540A (en) |
FR (1) | FR2855602A1 (en) |
WO (1) | WO2004106834A2 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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US9080500B2 (en) * | 2004-12-13 | 2015-07-14 | MAHLE Behr GmbH & Co. KG | Device for exchanging heat for gases containing acids |
FR2886391B1 (en) * | 2005-05-24 | 2014-01-03 | Valeo Systemes Thermiques | HEAT EXCHANGER HAVING A HEAT EXCHANGE BEAM IN A HOUSING |
FR2886390B1 (en) * | 2005-05-24 | 2007-08-24 | Valeo Systemes Thermiques | HEAT EXCHANGER HAVING A HEAT EXCHANGE BEAM IN A HOUSING |
EP1941224A1 (en) * | 2005-10-20 | 2008-07-09 | Behr GmbH & Co. KG | Heat exchanger |
GB2444792B (en) * | 2007-03-17 | 2008-11-12 | Senior Uk Ltd | U-shaped cooler |
PT2014892E (en) | 2007-07-11 | 2010-11-29 | Joao De Deus & Filhos S A | A heat exchanger arrangement |
FR3024771B1 (en) * | 2014-08-06 | 2019-03-22 | Valeo Systemes Thermiques | HEAT EXCHANGER BEAM AND HEAT EXCHANGER COMPRISING SAID BEAM |
JP6504394B2 (en) * | 2015-04-28 | 2019-04-24 | パナソニックIpマネジメント株式会社 | Heat exchanger, method of manufacturing heat exchanger, and fuel cell system |
US10330054B2 (en) * | 2016-03-24 | 2019-06-25 | Ford Global Technologies, Llc | Systems and method for an exhaust gas recirculation cooler coupled to a cylinder head |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10331725A (en) * | 1997-05-29 | 1998-12-15 | Calsonic Corp | Egr gas cooling device |
DE19836889A1 (en) * | 1998-08-14 | 2000-02-17 | Modine Mfg Co | Exhaust gas heat exchanger |
DE19846518B4 (en) * | 1998-10-09 | 2007-09-20 | Modine Manufacturing Co., Racine | Heat exchangers, in particular for gases and liquids |
DE19902504B4 (en) * | 1999-01-22 | 2005-09-22 | Behr Gmbh & Co. Kg | Heat exchanger, in particular intercooler |
US6247523B1 (en) * | 1999-07-30 | 2001-06-19 | Denso Corporation | Exhaust gas heat exchanger |
JP2001330394A (en) * | 2000-05-22 | 2001-11-30 | Denso Corp | Exhaust gas heat exchanger |
GB0015041D0 (en) * | 2000-06-21 | 2000-08-09 | Serck Heat Transfer Limited | Exhaust gas cooler |
-
2003
- 2003-05-27 FR FR0306417A patent/FR2855602A1/en active Pending
-
2004
- 2004-05-25 WO PCT/FR2004/001283 patent/WO2004106834A2/en active Application Filing
- 2004-05-25 KR KR1020057022605A patent/KR20060023540A/en not_active Application Discontinuation
- 2004-05-25 EP EP04742821A patent/EP1627196A2/en not_active Withdrawn
Non-Patent Citations (1)
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See references of WO2004106834A2 * |
Also Published As
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FR2855602A1 (en) | 2004-12-03 |
KR20060023540A (en) | 2006-03-14 |
WO2004106834A3 (en) | 2005-03-24 |
WO2004106834A2 (en) | 2004-12-09 |
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