EP2856059B1 - Wärmetauscher mit verstärktem kollektor - Google Patents

Wärmetauscher mit verstärktem kollektor Download PDF

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Publication number
EP2856059B1
EP2856059B1 EP13725116.1A EP13725116A EP2856059B1 EP 2856059 B1 EP2856059 B1 EP 2856059B1 EP 13725116 A EP13725116 A EP 13725116A EP 2856059 B1 EP2856059 B1 EP 2856059B1
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EP
European Patent Office
Prior art keywords
wall
exchanger according
heat exchange
exchange body
fluid
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.)
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Application number
EP13725116.1A
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English (en)
French (fr)
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EP2856059A1 (de
Inventor
Alan Day
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Priority to PL13725116T priority Critical patent/PL2856059T3/pl
Publication of EP2856059A1 publication Critical patent/EP2856059A1/de
Application granted granted Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers

Definitions

  • the technical sector of the present invention is that of heat exchangers configured to perform a heat exchange between a first fluid and a second fluid, more particularly intended to be installed in a motor vehicle.
  • a heat exchanger is for example a supercharged air cooler or an exhaust gas cooler, especially recirculated.
  • a motor vehicle can conventionally be equipped with an internal combustion engine combined with a turbocharger.
  • the latter causes a rise in the temperature of these intake gases which affects the proper filling of the combustion chambers of the engine. This is the reason why it is known to complete this configuration by the addition of a heat exchanger whose function is to cool the intake gases before entering these combustion chambers, which allows to increase the density of the intake gases.
  • Such a heat exchanger may comprise a plurality of tubes in which the intake gases circulates, the space surrounding these tubes being in turn traversed by a cooling fluid.
  • the inlet gases are channeled by a lid secured to a manifold, the latter being configured to sealingly receive the end of each tube through which the inlet gases enter.
  • New supercharging techniques make their appearances. It is thus known to combine the internal combustion engine with two or three turbochargers. This combination is accompanied by an increase in the pressure and the temperature of the inlet gases. The mechanical stresses experienced by the charge exchangers become extremely important, since the pressure of the inlet gases can reach 4 bars. The heat exchangers known to date are therefore not adapted to withstand such pressure or temperature levels, and leaks may appear in particular to the right of the junction which connects the cover to the collector.
  • the document FR2742531 A1 discloses a solution for reinforcing a peripheral edge of the collector. Although improving the situation, such a solution is not suitable for a heat exchanger between the intake or exhaust gas of the internal combustion engine, and a coolant fluid, due to the fact that the fluid liquid circulates around the tubes, and not inside the latter, as evoked by this document. The management of the sealing vis-à-vis the liquid fluid is different.
  • the object of the present invention is therefore to solve the disadvantages described above mainly by reinforcing the peripheral edge of the collector, so as to provide a recovery forces on a component of the heat exchange body, in particular on the or shutter plates which delimit the ducts in which the cooling fluid circulates.
  • the subject of the invention is therefore a heat exchanger comprising a heat exchange body, at least one cover and a collector connecting the cover to the heat exchange body, the heat exchange body being delimited by at least one heat exchange plate.
  • shutter comprising a bottom plate surrounded by a fastening edge of the lid, characterized in that the fastening edge is formed by a lined wall, one end of which is at least partially secured to the closure plate.
  • the fastening of the end of the doubled wall on the closure plate thus ensures a recovery of mechanical forces which contributes significantly to increasing the mechanical strength of the fastening edge against the constraints generated by the pressure or the temperature of the elements. fluids able to circulate in the exchanger according to the invention.
  • the heat exchange body comprises a plurality of tubes integral with the collector, in particular at their ends, and able to channel a first fluid, as well as a multiplicity of conduits able to channel a second fluid, said ducts being formed between the tubes and delimited by at least the closure plate.
  • a thickness of the doubled wall is at least two times greater than a thickness of the bottom plate.
  • the doubled wall is formed by a first wall and a second wall brazed to the first wall.
  • the first and second walls come from the same metal sheet and connected to one another by a fold.
  • the second wall is separated from the first wall and then attached thereto before a soldering step.
  • the lined wall comprises at least one angle to the right of which is provided a mechanical reinforcement device.
  • the latter prevents the angular inclination formed between the two parts of the lined wall which border the angle increases under the effect of pressure.
  • the mechanical reinforcement device is for example a chamfer formed on the angle of the first wall.
  • this mechanical reinforcement device is in particular a fillet formed on the angle of the second wall.
  • this reinforcing device can also be formed by the combination of chamfer and leave, formed on one or the other of the walls. Such an arrangement makes it possible to generate shapes that combine to oppose the mechanical stresses.
  • the securing edge delimits at least in part a housing for receiving a heel of the lid, the housing being moreover delimited by a strip which peripherally extends the plate of background.
  • the first wall of the doubled wall may comprise a first band forming a bottom of the housing and a first sidewall delimiting laterally the housing, the first band and the first side being connected by a chamfer.
  • the second wall of the doubled wall may comprise a second band brazed against the first band, and a second side brazed against the first side, the second band and the second side being connected by a Leave off the chamfer.
  • the fillet and the chamfer form here the device of mechanical reinforcement, and such a distance between this fillet and this chamfer contributes significantly to increase the mechanical strength of the joining edge.
  • the plurality of ducts is closed by a first closure plate and advantageously by a second closure plate, each closure plate being secured to a side wall of each tube.
  • This side wall forms a slice of the tube and extends in a plane parallel to an extension plane of the closure plate.
  • the end of the lined wall comprises a fold arranged so that a face of the second wall of the doubled wall is brazed against the closure plate.
  • an edge of the doubled wall can be secured at least on a longitudinal wall of an end tube of the exchange body thermal.
  • the lined wall forming a belt around the heat exchange body, it is thus brazed to a first side of the heat exchange body, at the sealing plate, and it can be soldered on a second side of the heat exchange body, perpendicular to the first side.
  • This second side is formed in particular by a terminal tube delimiting the heat exchange body
  • the closure plate comprises at least one tongue folded and brazed against a longitudinal wall of the end tube of the heat exchange body.
  • an edge of the sealing plate is brazed to the side wall of the end tube, such a structure makes it possible to increase the mechanical strength of the heat exchange body, along the closure plate.
  • closure plate may comprise at least one orifice through which a second fluid is able to enter or leave the heat exchange body. This ensures the second fluid supply of the heat exchanger.
  • the invention may also cover an intake or exhaust gas cooling system of an internal combustion engine, comprising a heat exchanger comprising any of the features set forth above, wherein the first fluid is formed by the intake or exhaust gas of the internal combustion engine, while the second fluid is formed by a coolant fluid.
  • a first advantage of the invention lies in the possibility of simply increasing the mechanical strength of the connection between the cover and the collector, without increasing the manufacturing cost or the difficulty of assembling such a heat exchanger .
  • a heat exchanger provided with a doubled wall collector and whose end of this wall is secured to a plate defining the circulation duct or ducts of the second fluid, can withstand the pressures and high temperatures.
  • the figure 1 illustrates an exemplary embodiment of a heat exchanger 1 according to the invention.
  • a heat exchanger is in particular a supercharged air cooler used to cool the intake gas of an internal combustion engine, but it can also be a recirculated exhaust gas cooler used to lower the exhaust gas temperature injected into the intake gases of such an internal combustion engine.
  • the heat exchanger 1 is configured to perform a heat exchange between a first fluid and a second fluid.
  • the heat exchanger is arranged on the one hand, for channeling a gaseous fluid, and on the other hand for conveying a liquid fluid, such as a cooling fluid consisting for example of water containing glycol.
  • the heat exchanger 1 may be a gaseous fluid / liquid fluid exchanger.
  • the heat exchanger 1 comprises a heat exchange body 2 which forms the seat of the heat exchange between the first fluid and the second fluid. At each end of this heat exchange body 2, there is a collector 3 capped by a cover 4.
  • the manifold 3 ensures a distribution of the first fluid through a plurality of constituent tubes of the heat exchange body 2, this first fluid being channeled by the cover 4 to or from the collector 3.
  • the cover 4 comprises at least one opening 5 by which the first fluid enters or leaves the heat exchanger 1.
  • the manifold 3 is thus on one side brazed to the heat exchange body 2 and the other, secured to the lid 4 or by brazing, a crimping of the collector 3 on the cover 4.
  • the heat exchange body 2 is provided with at least one closure plate 6 which participates in the delimitation of conduits in which the second fluid, in particular liquid, circulates.
  • the closure plate 6 comprises at least one orifice 7 through which the second fluid can penetrate into the heat exchange body 2.
  • the closure plate 6 may also comprise a bulge-forming deformation 8 with respect to a plane of extension of the closure plate 6. Such a bulge facilitates the distribution of the second fluid over an entire width of the heat exchange body 2.
  • the shutter plate 6 comprises two bulges 8 and two orifices 7 formed at the bulges, a first orifice being able to allow an inlet of the second fluid in the heat exchange body 2, while a second orifice is suitable to allow an output of the second fluid out of the heat exchange body 2.
  • the shutter plate 6 comprises at least one tongue 9 folded and soldered against a face of a tube bordering the heat exchange body 2.
  • the shutter plate comprises two sets of three referenced tabs 9 to 11, each of the series emerging from an edge of the closure plate parallel to the tube.
  • the manifold 3 is thus secured to the closure plate 6, by means of an end of a lined wall of the manifold 3 soldered against the closure plate.
  • This collector 3 is also made integral, in particular by soldering, with a wall of the end tubes placed at the ends of the heat exchange body 2.
  • the figure 2 is a view of the heat exchange body 2, in section passing through a plane A shown on the figure 1 .
  • the heat exchange body 2 comprises a plurality of tubes 12 made integral with the collector by soldering. These tubes are for example made from a metal sheet folded on itself, so as to define an internal volume in which the first fluid circulates, especially gaseous. It will be noted that the structure of each tube 12 is identical, the two tubes placed at one and the other end of the heat exchange body 2 being hereinafter called terminal tubes 12a and 12b.
  • a tube 12 is delimited by two parallel longitudinal walls, referenced 14 and 15, joined by two side walls referenced 16 and 17. This structure applies to all the tubes 12 constituting the heat exchange body 2, including the end tubes 12a, 12b.
  • a spacer 13 Inside the internal volume of each tube is installed a spacer 13.
  • the latter has a first function which consists in disturbing the flow of the first fluid in the tube 12, so as to maximize the heat transfer between the first fluid and the walls that delimit the tube 12.
  • This spacer 13 may have a second function which consists in mechanically reinforcing the tube 12.
  • the zigzag shape of the spacer makes it possible to produce solder lines between an inner face of the longitudinal walls 14, 15 and the top of each corrugation of the insert 13. The latter thus extends rectilinearly between each inner face of these longitudinal walls, which prevents swelling of the tube 12 under the effect of the pressure of the first fluid.
  • the heat exchange body 2 further comprises a plurality of ducts 18 capable of channeling the second fluid. These ducts 18 are formed by a space formed between each tube, but they are also delimited by a first closure plate 6a and by a second closure plate 6b, which laterally close the heat exchange body 2. The first fluid is thus separated from the second fluid only by the longitudinal walls 14, 15 which form the tubes 12.
  • each tube 12 is generated by a spacing device 19, one of whose functions is to guarantee a determined distance between two adjacent tubes 12, so as to form the conduit 18 concerned.
  • This spacing device 19 may implement a second function which consists in creating turbulence of the second fluid inside the ducts 18, so as to increase the heat exchange between the second fluid and the longitudinal walls 14, 15 of the tubes 12.
  • the spacing device 19 may be formed by a plurality of deformations made in the longitudinal walls 14, 15 of the tubes 12.
  • this spacing device 19 may be made by one or more parts reported and installed between each tube, before a soldering operation.
  • this part may for example be a grid, in particular comprising corrugations to generate turbulence.
  • the spacing device 19 can also fulfill a third function that consists of a recovery of mechanical forces, so as to avoid deformation of the heat exchange body 2. This is how the spacing device 19 can be brazed on each longitudinal wall 14, 15 of two tubes 12 immediately adjacent.
  • the heat exchange body 2 comprises the first shutter plate 6a and the second shutter plate 6b, each shutter plate being integral with the side wall 16, 17 of each tube 12. Such a connection is ensured by a soldering of the closure plate against the side wall of the tubes 12.
  • the figure 2 illustrates well the presence of the tongues 10 made of material with the shutter plate 6a and 6b. These tongues are folded against an outer face of the longitudinal wall 14 of the end tubes 12a and 12b. These tongues reinforce the mechanical connection by soldering between the closure plates 6a, 6b and the end tubes 12a, 12b, so as to form a housing delimiting the multiplicity of ducts 18.
  • the figure 3 is a view showing in detail the connection between the cover 4, the collector 3 and the shutter plate 6. This representation illustrates a section taken in the plane B shown in FIG. figure 1 .
  • the collector 3 comprises a bottom plate 20 surrounded by a fastening edge 21.
  • the bottom plate 20 is provided with openings, here oblong, which receive one end of each tube 12. These openings may be provided with a collar, oriented for example to the heat exchange body 2 or to the lid 4.
  • the fastening edge 21 forms a peripheral belt around the bottom plate 21, this fastening edge preferably being made of material with the bottom plate.
  • this fastening edge 21 is formed by a doubled wall 22, the latter ending at one end 23 at least partially secured to one and / or the other of the closure plates 6 .
  • doubled means that the fastening edge 21 is reinforced by the arrangement of two thicknesses of walls pressed against each other.
  • the lined wall 22 is thus formed by a first wall 24 and a second wall 25 immediately adjacent to the first wall 24, and which follows the contours.
  • the second wall 25 is rendered at least partially integral with the first wall 24 by a solder between these two walls.
  • the first wall 24 is also integral with the second wall by means of a fold back 36.
  • the first wall 24 and the second wall 25 come from the same sheet. metal which has been folded at the fold 36 to press the second wall 25 against the first wall 24.
  • the second wall 25 is made of material with the first wall 24.
  • the second wall 25 may be a separate part of the first wall 24, and reported before soldering against it, so as to form the lined wall 22 once secured to one another, in particular by brazing.
  • a thickness of the doubled wall 22 is at least twice greater than a thickness of the bottom plate 20. More precisely, the thickness of the doubled wall 22 is strictly equal to twice the thickness of the bottom wall 20. The thickness of the doubled wall 22 is measured in a plane passing through the bottom plate 20, while the thickness of the latter is measured in a direction parallel to a direction longitudinal tubes 12.
  • the fastening edge 21 delimits at least partly a housing 26 for receiving a heel 27 of the cover 4.
  • the bottom plate 20 is in turn extended by a strip 28 which extends in a direction perpendicular to the plane of extension of the bottom plate 20.
  • the housing 26 which receives the heel 27 of the lid is thus bordered on one side by the strip 28 and on the other by the first wall 24 constituting the lined wall 22.
  • this housing 26 can receive a seal 43 ensuring a seal between the first fluid and the surrounding environment the heat exchanger according to the invention.
  • This seal 43 is thus in abutment against the heel 27, against the strip 28 and against the first wall 24 at the housing 26.
  • the first wall 24 comprises a first band 29 extended by a first sidewall 30.
  • the first band 29 forms the bottom of the housing 26 against which the seal 43 bears.
  • the first flank 30 extends at least in part to the right of the housing 26, in particular laterally to it.
  • the first band 29 and the first sidewall 30 are especially flat.
  • a chamfer 31 that is to say a substantially flat edge inclined relative to the first band 29 and relative to the first sidewall 30. This chamfer 31 thus connects the first band 29 at the first sidewall 30, this chamfer being a part contributing to the mechanical reinforcement of the doubled wall 22.
  • the second wall 25 of the doubled wall 22 comprises a second band 32 extended by a second flank 33.
  • the second band 32 extends in a plane parallel to the plane of extension of the first band 29, these two strips being made integral with each other. one from the other by a brazed connection.
  • the second sidewall 33 extends in a plane parallel to the plane of extension of the first sidewall 30 and is brazed against this one.
  • the second band 32 is joined to the second flank 33 by a fillet 34, that is to say a rounded section edge.
  • This fillet 34 is opposite the chamfer 31, and it is configured to be separated from this chamfer 31, such an arrangement contributing to increasing the mechanical strength of the doubled wall 22.
  • the second band 32 and the second sidewall 33 are example dishes.
  • the lined wall 22 comprises a mechanical reinforcement device arranged at an angle of this doubled wall.
  • This device mechanical reinforcement can be formed either only by the chamfer 31, or only by the leave 34.
  • the mechanical reinforcement device may also be achieved by the combination of this chamfer 31 with the leave 34, such a combination to further increase the resistance mechanics of the doubled wall 22.
  • the end 23 of the doubled wall 22 is formed by an end portion of the second band 32.
  • the shutter plate 6 is interposed between the side walls 16, 17 of the tubes 12 and this end 23. According to an embodiment not shown, it is a slice of the second strip 32 which is brazed against the sealing plate 6.
  • the end 23 comprises a fold 35 oriented so that one or the other of the faces delimiting the second strip 32 is in abutment and brazed against the sealing plate 6.
  • the fold 35 forms a 90 ° angle facing the heat exchange body 2, that is to say the opposite of the lid 4 secured to the collector 3 concerned.
  • the doubled wall 22 comprises a series of crimping tabs 37 formed by portions which extend the first wall 24.
  • these crimping tabs 37 are shown before folding on the heel 27 of the lid 4. In the final assembly position, these crimping tabs are pressed against the heel 27 of the cover 4, so as to exert a compressive force against the seal 43.
  • the figure 4 is seen showing in detail the connection between the lid 4, the collector 3 and one of the terminal tubes 12a or 12b.
  • This representation shows a section taken in plane C shown in figure 1 .
  • the base plate 20 here comprises necks 38 turned towards the body 2. These collets receive one end of each tube 12, thus forming a contact area improving brazing between the bottom plate 20 and the tubes 12.
  • the strip 28 is here separated from the longitudinal wall 14 of the end tube 12a, due to the presence of a collar.
  • the second wall 25 is terminated by an edge 39 made integral with the end tube 12a, for example by brazing between these two parts.
  • the edge 39 comprises a fold 35 which makes it possible to press a face of the second wall 25 against an outer face of the longitudinal wall 14 of the end tube 12a.
  • the heat exchange body and the collector can be made from an aluminum alloy.
  • the cover 4 may in turn be made of an aluminum alloy or a synthetic material, such as plastic for example.
  • the figure 5 shows an alternative embodiment of the heat exchanger, seen in a sectional plane illustrated by the reference B on the figure 1 .
  • maintaining the cover 4 in the manifold 3 is provided by folding crimping tabs.
  • the variant of the figure 5 shows a different assembly, in that the cover 4 is secured to the manifold 3 by a weld or at least a solder.
  • the housing 26 here receives the heel 27 of the cover 4, this heel then being secured to the doubled wall 22 according to two alternative or complementary connection variants, both shown on this figure 5 .
  • the first alternative of joining is a soldering made between the heel 27 and the securing edge 21 of the collector 3.
  • a first brazing referenced 40 is formed between the strip 28 and an inner face of the heel 27 while a second brazing 41 is made between an outer face of the heel 27 and the doubled wall 22.
  • this second soldering 41 is formed between the first constituent flank 30 of the first wall 24 and the external face of the heel 27.
  • the second alternative of joining is formed by a referenced weld bead 42, for example disposed between the heel 27 of the cover and the fold 36 connecting the first wall 24 to the second wall 25 of the doubled wall 22.
  • the heat exchange body 2 and the cover 4 can be made of aluminum alloy, which facilitates the recycling of the heat exchanger, without the need to disassemble.
  • the heat exchanger 1 described above can be integrated into an intake or exhaust gas cooling system of an internal combustion engine.
  • the first fluid is formed by the intake or exhaust gases of the internal combustion engine, while the second fluid is formed by a liquid coolant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (15)

  1. Wärmeaustauscher (1), der einen Wärmeaustauschkörper (2), mindestens einen Deckel (4) und einen Kollektor (3), der den Deckel (4) mit dem Wärmeaustauschkörper (2) verbindet, umfasst, wobei der Wärmeaustauschkörper (2) durch mindestens eine Verschlussplatte (6, 6a, 6b) begrenzt ist, wobei der Kollektor (3) eine Bodenplatte (20) umfasst, die von einem Verbindungsrand (21) des Deckels (4) umgeben ist, dadurch gekennzeichnet, dass der Verbindungsrand (21) durch eine verdoppelte Wand (22) gebildet ist, deren Ende (23) mindestens teilweise fest auf der Verschlussplatte (6, 6a, 6b) verbunden ist.
  2. Wärmeaustauscher nach Anspruch 1, wobei der Wärmeaustauschkörper (2) eine Mehrzahl von Rohren (12, 12a, 12b) umfasst, die fest mit dem Kollektor (3) verbunden und geeignet sind, um ein erstes Fluid zu kanalisieren, sowie eine Mehrzahl von Leitungen (18), die geeignet sind, ein zweites Fluid zu kanalisieren, wobei die Leitungen (18) zwischen den Rohren (12, 12a, 12b) ausgebildet und durch mindestens die Verschlussplatte (6, 6a, 6b) abgegrenzt sind.
  3. Wärmeaustauscher nach den Ansprüchen 1 oder 2, wobei eine Stärke der verdoppelten Wand (22) mindestens zwei Mal größer ist als eine Stärke der Bodenplatte (20).
  4. Wärmeaustauscher nach einem der Ansprüche 1 bis 3, wobei die verdoppelte Wand (22) durch eine erste Wand (24) und eine zweite Wand (25), die gegen die erste Wand (24) gelötet ist, gebildet ist.
  5. Wärmeaustauscher nach Anspruch 4, wobei die verdoppelte Wand (22) mindestens einen Winkel umfasst, zu dem senkrecht eine mechanische Verstärkungsvorrichtung eingerichtet ist.
  6. Wärmeaustauscher nach Anspruch 5, wobei die mechanische Verstärkungsvorrichtung eine Abfasung (31) ist, die auf dem Winkel der ersten Wand (24) eingerichtet ist.
  7. Wärmeaustauscher nach den Ansprüchen 4 oder 5, wobei die mechanische Verstärkungsvorrichtung eine Hohlkehle (34) ist, die auf dem Winkel der zweiten Wand (25) eingerichtet ist, wobei die Hohlkehle (34) insbesondere gegenüber der Abfasung (31) ausgebildet ist.
  8. Wärmeaustauscher nach einem der Ansprüche 4 bis 7, wobei der Verbindungsrand (21) mindestens zum Teil eine Aufnahme (26) zum Aufnehmen eines Absatzes (27) des Deckels (4) abgrenzt, wobei die Aufnahme (26) außerdem von einem Band (28) begrenzt wird, das die Bodenplatte (20) umfänglich verlängert.
  9. Wärmeaustauscher nach Anspruch 8, wobei die erste Wand (24) der verdoppelten Wand (22) ein erstes Band (29) umfasst, das einen Boden der Aufnahme (26) bildet, und eine erste Flanke (30), die die Aufnahme (26) seitlich abgrenzt, wobei das erste Band (29) und die erste Flanke (30) durch eine Abfasung (31) verbunden sind.
  10. Wärmeaustauscher nach Anspruch 9, wobei zweite Wand (25) der verdoppelten Wand (22) ein zweites Band (32) umfasst, das gegen das erste Band (29) gelötet ist, sowie eine zweite Flanke (33), die gegen die erste Flanke (30) gelötet ist, wobei das zweite Band (32) und die zweite Flanke (33) durch eine Hohlkehle (34) in Entfernung von der Abfasung (31) verbunden sind.
  11. Wärmeaustauscher nach einem der Ansprüche 4 bis 10, wobei das Ende (23) der verdoppelten Wand (22) eine Falte (35) umfasst, die eingerichtet ist, damit eine Seite der zweiten Wand (25) der verdoppelten Wand (22) gegen die Verschlussplatte (6, 6a, 6b) gelötet wird.
  12. Wärmeaustauscher nach einem der Ansprüche 2 bis 11, wobei die Mehrzahl von Leitungen (18) durch eine erste Verschlussplatte (6a) verschlossen ist, und durch eine zweite Verschlussplatte (6b), wobei jede Verschlussplatte (6a, 6b) fest mit einer seitlichen Wand (16, 17) jedes Rohrs (12, 12a, 12b) verbunden ist.
  13. Wärmeaustauscher nach einem der vorhergehenden Ansprüche, wobei ein Rand (39) der verdoppelten Wand (22) fest mindestens auf einer Längswand (14) eines Endrohrs (12a, 12b) des Wärmeaustauschkörpers (2) verbunden ist.
  14. Wärmeaustauscher nach Anspruch 13, wobei die Verschlussplatte (6, 6a, 6b) mindestens eine Lasche (9, 10, 11) umfasst, die zurückgefaltet und gegen die Längswand (14) des Endrohrs (12a, 12b) gelötet ist.
  15. Wärmeaustauscher nach einem der vorhergehenden Ansprüche, wobei die Verschlussplatte (6, 6a, 6b) mindestens eine Öffnung (7) umfasst, durch die ein zweites Fluid in den Wärmeaustauschkörper (2) eintreten oder aus ihm austreten kann.
EP13725116.1A 2012-05-24 2013-05-16 Wärmetauscher mit verstärktem kollektor Active EP2856059B1 (de)

Priority Applications (1)

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PL13725116T PL2856059T3 (pl) 2012-05-24 2013-05-16 Wymiennik ciepła ze wzmocnionym kolektorem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1254743A FR2991038A1 (fr) 2012-05-24 2012-05-24 Echangeur de chaleur a collecteur renforce
PCT/EP2013/060180 WO2013174719A1 (fr) 2012-05-24 2013-05-16 Echangeur de chaleur a collecteur renforce

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EP2856059B1 true EP2856059B1 (de) 2016-06-15

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EP (1) EP2856059B1 (de)
JP (1) JP6068623B2 (de)
KR (1) KR101702297B1 (de)
CN (1) CN104641198B (de)
ES (1) ES2588903T3 (de)
FR (1) FR2991038A1 (de)
PL (1) PL2856059T3 (de)
WO (1) WO2013174719A1 (de)

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DE102019210477A1 (de) * 2019-07-16 2021-01-21 Mahle International Gmbh Crimprahmen oder Crimpboden

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KR20150014516A (ko) 2015-02-06
JP6068623B2 (ja) 2017-01-25
WO2013174719A1 (fr) 2013-11-28
EP2856059A1 (de) 2015-04-08
JP2015517644A (ja) 2015-06-22
ES2588903T3 (es) 2016-11-07
PL2856059T3 (pl) 2017-04-28
KR101702297B1 (ko) 2017-02-06
FR2991038A1 (fr) 2013-11-29
US9772144B2 (en) 2017-09-26
US20150176922A1 (en) 2015-06-25
CN104641198B (zh) 2018-01-19
CN104641198A (zh) 2015-05-20

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