EP1063486B1 - Plate heat exchanger, especially oil cooler for motor vehicles - Google Patents
Plate heat exchanger, especially oil cooler for motor vehicles Download PDFInfo
- Publication number
- EP1063486B1 EP1063486B1 EP20000401418 EP00401418A EP1063486B1 EP 1063486 B1 EP1063486 B1 EP 1063486B1 EP 20000401418 EP20000401418 EP 20000401418 EP 00401418 A EP00401418 A EP 00401418A EP 1063486 B1 EP1063486 B1 EP 1063486B1
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- EP
- European Patent Office
- Prior art keywords
- plates
- heat exchanger
- undulations
- fluid
- plate
- 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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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
- 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
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
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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
- F28D9/005—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 the plates having openings therein for both heat-exchange media
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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
- 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
- F28D2021/0089—Oil coolers
Definitions
- the invention relates to heat exchangers, in particular for motor vehicles.
- It relates more particularly to a heat exchanger comprising a multiplicity of stacked plates provided each of a raised peripheral edge, and wherein said peripheral edges are assembled tightly for delimit between the plates of the first flow channels for a first fluid that alternate with second channels flow for a second fluid.
- a heat exchanger of this type also called “exchanger "or” plate exchanger “is known in particular according to the publication DE-A-195 11 991, or EP 0 867 679.
- Such a heat exchanger heat is used for example as a cooler oil for a motor vehicle, to ensure cooling engine oil or the cooling of oil from the automatic gearbox, by exchange thermal with a coolant, usually the one used for cooling the engine of the vehicle.
- the plates are usually made by stamping a sheet metal, and are stacked, so that their peripheral edges respective ones fit into each other and be then brazed together to ensure watertightness, which allows to define fluid circulation channels.
- the heat exchanger thus results from a stack of plates and does not require a housing.
- the plates have openings located at the right of the aforementioned pipes and alternatively sealed, either by stampings, either by insert rings, for ensure or prohibit the passage of one or the other fluid.
- the plates have a generally flat bottom and it is intended, in each flow channel, a disruptive element for to promote a turbulent flow of the fluid and therefore the exchange thermal.
- the object of the invention is in particular to overcome the disadvantages supra.
- the invention also aims to provide such a heat exchanger plate heat clean to improve heat exchange between the two fluids, without increasing the loss of charge of the circuit of the first fluid and the circuit of the second fluid.
- the hydraulic diameter can be expressed by the aforementioned simplified relation.
- the value of the hydraulic diameter D h is substantially equal to 1.8 mm.
- the corrugations of a first plate and the corrugations of a second plate are preferably mutual contact locally.
- the undulations of the first plates and the undulations of second plates are advantageously of substantially sinusoidal.
- the first plates and the second plates are formed by stamping a metal sheet, preferably based on aluminum.
- the raised edges of the first plates and seconds plates are advantageously assembled together by brazing.
- the exchanger of heat is realized in the form of a cooler motor vehicle oil in which one of the fluids is the engine oil or the oil from the box of automatic vehicle speeds, while the other fluid is a cooling fluid.
- the heat exchanger shown in FIG. multiplicity of plates, or blades, stacked according to a assembly technique called "in scales".
- the exchanger of heat includes first plates 10 that alternate with second plates 12 of different configuration.
- the first plates 10 each have a bottom 14 surrounded by a peripheral edge 16 raised upwards.
- the bottom 14 is provided with undulations 18, of substantially sinusoidal, defined by parallel generators between they extend in a first direction D1 ( Figure 3).
- the bottom 20 comprises corrugations 24 of substantially sinusoidal shape, defined by generators extending in a second direction D2 which is substantially perpendicular to the first direction D1 ( Figure 3).
- the plates 10 and 12 are formed by stamping a sheet metal preferably aluminum-based. They have in the example a general rectangular shape but could present another form provided that their raised edges can fit in pairs.
- the heat exchanger further comprises (Figure 1) a inlet pipe 26 and an outlet pipe 28 for a first fluid F1, and an inlet pipe 30 and a outlet pipe 32 for a second fluid F2.
- the plates 10 and 12 are stacked and thus come into mutual contact at their periphery by their raised edges 16 and 22, which are brazed together to ensure sealed mechanical connection.
- the corrugations 18 of a first plate are in contact with the corrugations 24 of a second plate adjacent.
- the plates 10 and 12 thus delimit between them channels 34 for the first F1 fluid that alternate with channels 36 for the second fluid F2.
- Tubings 26, 28, 30 and 32 extend inside of the pile and there is provision for ways to make communicate tubings 26 and 28 with the first channels 34, on the one hand, and the tubings 30 and 32 with the second channels 36, on the other hand. These means of communication, in themselves known, are not described. Details about it can be found in particular in publication DE-A-195 11 991 above.
- the respective undulations 18 and 24 make it possible to give the channels a particular three-dimensional structure that promotes a turbulent flow of fluid F1 and fluid F2 and, therefore, a good heat exchange between them. This allows the removal of disruptive elements which, up to present, had been considered necessary in this type of plate heat exchangers.
- the diameter hydraulic channels 34 and 36 has a chosen value.
- h represents half of the maximum spacing between respective ridges 38 and 40 respective corrugations 18, 24 of a first plate 10 and a second plate 12 adjacent.
- the value of the hydraulic diameter D h must be between 1 and 3 mm.
- this value is substantially equal to 1.8 mm.
- the heat exchanger is advantageously a cooler oil. It can be used to cool the oil of the engine or the oil of the automatic gearbox of a motor vehicle.
- one of the fluids is constituted by this oil, while the other fluid is constituted by a cooling fluid.
- This last one is advantageously the liquid which is usually used for engine cooling of the motor vehicle.
- the heat exchanger When the heat exchanger is used to cool engine oil, it is then attached either directly to the engine block, either on a connected filtration box directly to the engine.
- the exchanger can then be connected to the cooling fluid circuit through ducts.
- the heat exchanger can be connected directly to the oil pan of the box of speeds.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
L'invention se rapporte aux échangeurs de chaleur, notamment pour véhicules automobiles.The invention relates to heat exchangers, in particular for motor vehicles.
Elle concerne plus particulièrement un échangeur de chaleur comprenant une multiplicité de plaques empilées munies chacune d'un bord périphérique relevé, et dans lequel lesdits bords périphériques sont assemblés de manière étanche pour délimiter entre les plaques des premiers canaux d'écoulement pour un premier fluide qui alternent avec des seconds canaux d'écoulement pour un second fluide.It relates more particularly to a heat exchanger comprising a multiplicity of stacked plates provided each of a raised peripheral edge, and wherein said peripheral edges are assembled tightly for delimit between the plates of the first flow channels for a first fluid that alternate with second channels flow for a second fluid.
Un échangeur de chaleur de ce type, appelé aussi "échangeur à plaques", ou "échangeur à lames", est connu en particulier d'après la publication DE-A-195 11 991, ou encore de EP 0 867 679. Un tel échangeur de chaleur est utilisé par exemple en tant que refroidisseur d'huile pour véhicule automobile, pour assurer le refroidissement de l'huile du moteur ou encore le refroidissement de l'huile de la boíte de vitesses automatique, par échange thermique avec un fluide de refroidissement, habituellement celui qui sert au refroidissement du moteur du véhicule.A heat exchanger of this type, also called "exchanger "or" plate exchanger "is known in particular according to the publication DE-A-195 11 991, or EP 0 867 679. Such a heat exchanger heat is used for example as a cooler oil for a motor vehicle, to ensure cooling engine oil or the cooling of oil from the automatic gearbox, by exchange thermal with a coolant, usually the one used for cooling the engine of the vehicle.
Dans un échangeur de chaleur de ce type, les plaques sont réalisées habituellement par emboutissage d'une tôle métallique, et sont empilées, en sorte que leurs bords périphériques respectifs s'emboítent les uns dans les autres et soient ensuite brasés entre eux pour assurer l'étanchéité, ce qui permet de définir des canaux de circulation de fluide. L'échangeur de chaleur résulte ainsi d'un empilage de plaques et ne nécessite pas de boítier.In a heat exchanger of this type, the plates are usually made by stamping a sheet metal, and are stacked, so that their peripheral edges respective ones fit into each other and be then brazed together to ensure watertightness, which allows to define fluid circulation channels. The heat exchanger thus results from a stack of plates and does not require a housing.
On prévoit alors une tubulure d'entrée et une tubulure de sortie pour un premier fluide qui communiquent avec une première série de canaux, ainsi qu'une tubulure d'entrée et une tubulure de sortie pour un second fluide qui communiquent avec une deuxième série de canaux, en sorte que les canaux de la première série alternent avec les canaux de la deuxième série.An inlet pipe and a tubing of output for a first fluid that communicate with a first set of channels, as well as an inlet manifold and an outlet pipe for a second fluid that communicate with a second set of channels, so that the channels of the first series alternate with the channels of the second series.
Les plaques possèdent des ouvertures situées au droit des tubulures précitées et alternativement rendues étanches, soit par des emboutis, soit par des bagues rapportées, pour assurer ou interdire le passage de l'un ou l'autre fluide.The plates have openings located at the right of the aforementioned pipes and alternatively sealed, either by stampings, either by insert rings, for ensure or prohibit the passage of one or the other fluid.
Dans les échangeurs de chaleur connus de ce type, les plaques présentent un fond généralement plan et il est prévu, dans chaque canal d'écoulement, un élément perturbateur pour favoriser un écoulement turbulent du fluide et donc l'échange thermique.In known heat exchangers of this type, the plates have a generally flat bottom and it is intended, in each flow channel, a disruptive element for to promote a turbulent flow of the fluid and therefore the exchange thermal.
En outre, il est généralement nécessaire de prévoir des éléments perturbateurs différents pour le premier et le second fluides, ce qui complique la fabrication de l'échangeur de chaleur.In addition, it is generally necessary to provide different disturbing elements for the first and the second fluids, which complicates the manufacture of the exchanger heat.
L'invention a notamment pour but de surmonter les inconvénients précités.The object of the invention is in particular to overcome the disadvantages supra.
Elle vise en particulier à procurer un échangeur de chaleur à plaques du type défini précédemment, qui ne comporte pas d'éléments perturbateurs.It aims in particular to provide a heat exchanger plate of the type defined above, which does not include of disturbing elements.
L'invention vise également à procurer un tel échangeur de chaleur à plaques propre à améliorer l'échange thermique entre les deux fluides, sans augmentation de la perte de charge du circuit du premier fluide et du circuit du second fluide.The invention also aims to provide such a heat exchanger plate heat clean to improve heat exchange between the two fluids, without increasing the loss of charge of the circuit of the first fluid and the circuit of the second fluid.
L'invention propose à cet effet un échangeur de chaleur du type défini en introduction, lequel comprend des premières plaques présentant chacune un fond ondulé avec des ondulations définies par des génératrices s'étendant dans une première direction et des secondes plaques disposées en alternance avec les premières plaques et présentant chacune un fond ondulé avec des ondulations définies par des génératrices s'étendant dans une seconde direction qui est sensiblement perpendiculaire à la première direction, et dans lequel chaque canal possède un diamètre hydraulique (Dh) de valeur choisie, définie par la relation : Dh =2 x h, où h représente la demi-hauteur du canal, c'est-à-dire la moitié de l'espacement maximal entre les crêtes respectives des ondulations d'une première plaque et les crêtes respectives des ondulations d'une seconde plaque adjacente.The invention proposes for this purpose a heat exchanger of the type defined in the introduction, which comprises first plates each having a corrugated bottom with corrugations defined by generatrices extending in a first direction and second plates arranged alternately with the first plates and each having a corrugated bottom with corrugations defined by generatrices extending in a second direction which is substantially perpendicular to the first direction, and wherein each channel has a hydraulic diameter (D h ) of a chosen value, defined by the relation: D h = 2 xh, where h represents the half-height of the channel, that is to say half of the maximum spacing between the respective peaks of the corrugations of a first plate and the respective peaks of the corrugations a second adjacent plate.
On définit ainsi des canaux tridimensionnels de forme particulière délimités chacun entre deux fonds ondulés, dont les ondulations respectives s'étendent dans des directions sensiblement perpendiculaires entre elles.We thus define three-dimensional channels of form particular each delimited between two corrugated bottoms, of which the respective undulations extend in directions substantially perpendicular to each other.
Ces ondulations donnent une valeur du diamètre hydraulique déterminée et égale pour les deux fluides.These corrugations give a value of the hydraulic diameter determined and equal for both fluids.
On rappellera que pour un tel canal tridimensionnel, le diamètre hydraulique est défini par la relation : Dh = 4 X Volume occupé par le fluide/Surface mouillée.It will be recalled that for such a three-dimensional channel, the hydraulic diameter is defined by the relation: D h = 4 X volume occupied by the fluid / wet surface.
Dans le cas de l'invention, le diamètre hydraulique peut être exprimé par la relation simplifiée précitée.In the case of the invention, the hydraulic diameter can be expressed by the aforementioned simplified relation.
Il a été constaté que, lorsque la valeur du diamètre hydraulique Dh est choisie et est comprise entre 1 et 3 mm, on obtient un échange thermique optimal entre les deux fluides, sans augmentation de la perte de charge de l'un et l'autre de ces fluides.It has been found that, when the value of the hydraulic diameter D h is chosen and is between 1 and 3 mm, optimum heat exchange is obtained between the two fluids, without increasing the pressure drop of the one and the other of these fluids.
De façon avantageuse, la valeur du diamètre hydraulique Dh est sensiblement égale à 1,8 mm.Advantageously, the value of the hydraulic diameter D h is substantially equal to 1.8 mm.
Dans l'invention, les ondulations d'une première plaque et les ondulations d'une seconde plaque sont de préférence en contact mutuel localement. In the invention, the corrugations of a first plate and the corrugations of a second plate are preferably mutual contact locally.
Les ondulations des premières plaques et les ondulations des secondes plaques sont avantageusement de forme sensiblement sinusoïdale.The undulations of the first plates and the undulations of second plates are advantageously of substantially sinusoidal.
Selon une autre caractéristique de l'invention, les premières plaques et les secondes plaques sont formées par emboutissage d'une tôle métallique, de préférence à base d'aluminium.According to another characteristic of the invention, the first plates and the second plates are formed by stamping a metal sheet, preferably based on aluminum.
Les bords relevés des premières plaques et des secondes plaques sont avantageusement assemblés entre eux par brasage.The raised edges of the first plates and seconds plates are advantageously assembled together by brazing.
Dans une application préférentielle de l'invention, l'échangeur de chaleur est réalisé sous la forme d'un refroidisseur d'huile pour véhicule automobile, dans lequel l'un des fluides est l'huile du moteur ou l'huile de la boíte de vitesses automatique du véhicule, tandis que l'autre fluide est un fluide de refroidissement.In a preferred application of the invention, the exchanger of heat is realized in the form of a cooler motor vehicle oil in which one of the fluids is the engine oil or the oil from the box of automatic vehicle speeds, while the other fluid is a cooling fluid.
Dans la description qui suit, faite seulement à titre d'exemple, on se réfère aux dessins annexés, sur lesquels :
- la figure 1 est une vue en perspective d'un échangeur de chaleur à plaques selon l'invention ;
- la figure 2 est une vue partielle en coupe de l'échangeur de chaleur de la figure 1 ; et
- la figure 3 est une vue partielle en perspective éclatée d'une première plaque et d'une seconde plaque adjacentes faisant partie de l'échangeur de chaleur de la figure 1.
- Figure 1 is a perspective view of a plate heat exchanger according to the invention;
- Figure 2 is a partial sectional view of the heat exchanger of Figure 1; and
- FIG. 3 is a partial exploded perspective view of a first adjacent plate and second plate forming part of the heat exchanger of FIG.
L'échangeur de chaleur représenté à la figure 1 comprend une
multiplicité de plaques, ou lames, empilées selon une
technique d'assemblage dite "en écailles". L'échangeur de
chaleur comprend des premières plaques 10 qui alternent avec
des secondes plaques 12 de configuration différente.The heat exchanger shown in FIG.
multiplicity of plates, or blades, stacked according to a
assembly technique called "in scales". The exchanger of
heat includes
Les premières plaques 10 présentent chacune un fond 14
entouré par un bord périphérique 16 relevé vers le haut. Le
fond 14 est muni d'ondulations 18, de forme sensiblement
sinusoïdale, définies par des génératrices parallèles entre
elles qui s'étendent dans une première direction D1 (figure
3).The
Les secondes plaques 12, disposées en alternance avec les
premières plaques 10, présentent chacune un fond 20 entouré
par un bord périphérique relevé 22, ayant une forme homologue
de celle du bord périphérique 16 précité. Le fond 20 comporte
des ondulations 24 de forme sensiblement sinusoïdale,
définies par des génératrices s'étendant dans une seconde
direction D2 qui est sensiblement perpendiculaire à la
première direction D1 (figure 3).The
Les plaques 10 et 12 sont formées par emboutissage d'une tôle
métallique de préférence à base d'aluminium. Elles ont dans
l'exemple une forme générale rectangulaire mais pourraient
présenter une autre forme à condition que leurs bords relevés
puissent s'emboíter deux à deux.The
L'échangeur de chaleur comprend en outre (figure 1) une
tubulure d'entrée 26 et une tubulure de sortie 28 pour un
premier fluide F1, ainsi qu'une tubulure d'entrée 30 et une
tubulure de sortie 32 pour un second fluide F2.The heat exchanger further comprises (Figure 1) a
Les plaques 10 et 12 sont empilées et viennent ainsi en
contact mutuel à leur périphérie par leurs bords relevés
respectifs 16 et 22, qui sont brasés ensemble pour assurer un
liaison mécanique étanche.The
Par ailleurs, les ondulations 18 d'une première plaque sont
en contact avec les ondulations 24 d'une seconde plaque
adjacente. Les plaques 10 et 12 délimitent ainsi entre elles
des canaux 34 pour le premier fluide F1 qui alternent avec
des canaux 36 pour le second fluide F2.Moreover, the
Les tubulures 26, 28, 30 et 32 se prolongent à l'intérieur de
la pile et il est prévu des moyens permettant de faire
communiquer les tubulures 26 et 28 avec les premiers canaux
34, d'une part, et les tubulures 30 et 32 avec les seconds
canaux 36, d'autre part. Ces moyens de communication, en eux-mêmes
connus, ne sont pas décrits. Des détails à ce sujet
peuvent être trouvés notamment dans la publication DE-A-195
11 991 précitée.Tubings 26, 28, 30 and 32 extend inside of
the pile and there is provision for ways to make
Les ondulations respectives 18 et 24 permettent de donner aux
canaux une structure tridimensionnelle particulière qui
favorise un écoulement turbulent du fluide F1 et du fluide F2
et, par conséquent, un bon échange thermique entre eux. Ceci
permet de supprimer les éléments perturbateurs qui, jusqu'à
présent, avaient été considérés comme nécessaires dans ce
type d'échangeurs de chaleur à plaques.The
Dans l'invention, il est en outre essentiel que le diamètre
hydraulique des canaux 34 et 36 ait une valeur choisie.In the invention, it is furthermore essential that the diameter
En règle générale, le diamètre hydraulique est défini par la relation Dh = 4 x Volume occupé par le fluide/Surface mouillée.As a general rule, the hydraulic diameter is defined by the relation D h = 4 x volume occupied by the fluid / wet surface.
Ici, dans le cas d'un canal de faible épaisseur, le diamètre
hydraulique Dh peut être exprimé, d'une façon simplifiée, par
la relation suivante :
En se reportant aux figures 2 et 3, h représente la moitié de
l'espacement maximal entre les crêtes respectives 38 et 40
des ondulations respectives 18, 24 d'une première plaque 10
et d'une deuxième plaque 12 adjacentes.Referring to Figures 2 and 3, h represents half of
the maximum spacing between
Ici, la valeur du diamètre hydraulique Dh doit être comprise entre 1 et 3 mm. Avantageusement, cette valeur est sensiblement égale à 1,8 mm.Here, the value of the hydraulic diameter D h must be between 1 and 3 mm. Advantageously, this value is substantially equal to 1.8 mm.
L'échangeur de chaleur constitue avantageusement un refroidisseur d'huile. Il peut être utilisé pour refroidir l'huile du moteur ou l'huile de la boíte de vitesses automatique d'un véhicule automobile. Dans ce cas, l'un des fluides est constitué par cette huile, tandis que l'autre fluide est constitué par un fluide de refroidissement. Ce dernier est avantageusement le liquide qui sert habituellement au refroidissement du moteur du véhicule automobile.The heat exchanger is advantageously a cooler oil. It can be used to cool the oil of the engine or the oil of the automatic gearbox of a motor vehicle. In this case, one of the fluids is constituted by this oil, while the other fluid is constituted by a cooling fluid. This last one is advantageously the liquid which is usually used for engine cooling of the motor vehicle.
Lorsque l'échangeur de chaleur est utilisé pour refroidir l'huile du moteur, il est alors fixé soit directement sur le bloc-moteur, soit sur un boítier de filtration connecté directement au moteur. L'échangeur peut être alors relié au circuit du fluide de refroidissement par des conduits.When the heat exchanger is used to cool engine oil, it is then attached either directly to the engine block, either on a connected filtration box directly to the engine. The exchanger can then be connected to the cooling fluid circuit through ducts.
Dans le cas du refroidissement de l'huile de la boíte de vitesses automatique, l'échangeur de chaleur peut être raccordé directement au carter d'huile de la boíte de vitesses.In the case of the cooling of the oil of the box of automatic speeds, the heat exchanger can be connected directly to the oil pan of the box of speeds.
Il a été constaté qu'un tel échangeur de chaleur permet une amélioration de l'échange thermique entre les deux fluides, sans variation de la perte de charge du circuit d'huile et du circuit du liquide de refroidissement. Des essais ont montré que, par rapport à un échangeur de chaleur à plaques classique muni de perturbateurs, l'échangeur de chaleur selon l'invention dégage un puissance thermique qui peut être supérieure de 15% et une perte de charge qui peut être réduite de 30 à 40 %.It has been found that such a heat exchanger allows a improvement of the heat exchange between the two fluids, without variation of the pressure drop of the oil circuit and the coolant circuit. Tests have shown that compared to a conventional plate heat exchanger equipped with disrupters, the heat exchanger according to the invention releases a thermal power that can be 15% higher and a pressure drop that can be reduced by 30 to 40%.
Bien entendu, l'invention n'est pas limitée à la forme de réalisation décrite précédemment à titre exemple mais s'étend également à d'autres variantes.Of course, the invention is not limited to the form of embodiment described above as an example but extends also to other variants.
Claims (7)
- Heat exchanger for a motor vehicle, comprising a multiplicity of stacked plates (10; 12) each provided with a raised peripheral edge (16; 22) and in which the said peripheral edges are assembled in a sealed manner so as to delimit between the plates first flow ducts (34) for a first fluid (F1) which alternate with second flow ducts (36) for a second fluid (F2), characterized in that it comprises first plates (10) each having a base (14) with undulations (18) defined by generatrices extending in a first direction (D1) and second plates (12) arranged to alternate with the first plates (10) and each having a base (20) with undulations (24) defined by generatrices extending in a second direction (D2) which is substantially perpendicular to the first direction (D1), and in that each duct (34; 36) has a hydraulic diameter (Dh) of chosen value defined by the relationship Dh = 2.h, where h represents half the height of the duct, that is to say half the maximum spacing between the respective crests (38; 40) of the respective undulations (18; 24) of a first plate (10) and of a second plate (12), which plates are adjacent, and in that the value of the hydraulic diameter Dh is between 1 and 3 mm.
- Heat exchanger according to Claim 1, characterized in that the value of the hydraulic diameter Dh is approximately equal to 1.8 mm.
- Heat exchanger according to either of Claims 1 and 2, characterized in that the undulations (18) of a first plate (10) and the undulations (24) of a second plate (12) are in mutual contact locally.
- Heat exchanger according to one of Claims 1 to 3, characterized in that the undulations (18) of the first plates (10) and the undulations (24) of the second plates (12) are of substantially sinusoidal shape.
- Heat exchanger according to one of Claims 1 to 4, characterized in that the first plates (10) and the second plates (12) are formed by stamping a metal sheet, preferably an aluminium-based metal sheet.
- Heat exchanger according to one of Claims 1 to 5, characterized in that the raised edges (16, 22) of the first plates (10) and of the second plates (12) are joined together by brazing.
- Heat exchanger according to one of Claims 1 to 6, characterized in that one of the fluids is motor vehicle engine oil or automatic gearbox oil, while the other fluid is a cooling fluid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9907830 | 1999-06-21 | ||
| FR9907830A FR2795165B1 (en) | 1999-06-21 | 1999-06-21 | PLATE HEAT EXCHANGER, PARTICULARLY OIL COOLER FOR MOTOR VEHICLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1063486A1 EP1063486A1 (en) | 2000-12-27 |
| EP1063486B1 true EP1063486B1 (en) | 2005-11-16 |
Family
ID=9547051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20000401418 Expired - Lifetime EP1063486B1 (en) | 1999-06-21 | 2000-05-23 | Plate heat exchanger, especially oil cooler for motor vehicles |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1063486B1 (en) |
| JP (1) | JP2001056192A (en) |
| DE (1) | DE60023992T2 (en) |
| FR (1) | FR2795165B1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100863722B1 (en) * | 2001-10-05 | 2008-10-15 | 한라공조주식회사 | Plate for two tank type heat exchanger |
| FR2846733B1 (en) | 2002-10-31 | 2006-09-15 | Valeo Thermique Moteur Sa | CONDENSER, IN PARTICULAR FOR A CIRCUIT FOR CIMATING A MOTOR VEHICLE, AND CIRCUIT COMPRISING THE CONDENSER |
| FR2846736B1 (en) | 2002-10-31 | 2006-01-27 | Valeo Thermique Moteur Sa | HEAT EXCHANGE MODULE WITH STACKED PLATES, IN PARTICULAR FOR A MOTOR VEHICLE |
| FR2846734B1 (en) | 2002-10-31 | 2017-09-01 | Valeo Thermique Moteur Sa | PLATE HEAT EXCHANGER MODULE COMPRISING A HEAT EXCHANGE SECTION COOLED WITH ATMOSPHERIC AIR, IN PARTICULAR FOR A MOTOR VEHICLE |
| FR2850740B1 (en) * | 2003-01-31 | 2006-11-24 | Valeo Thermique Moteur Sa | HIGH PRESSURE PLATE HEAT EXCHANGER, ESPECIALLY FOR MOTOR VEHICLE AIR CONDITIONING CIRCUIT |
| WO2005012820A1 (en) * | 2003-08-01 | 2005-02-10 | Behr Gmbh & Co. Kg | Heat exchanger and method for the production thereof |
| US7343965B2 (en) * | 2004-01-20 | 2008-03-18 | Modine Manufacturing Company | Brazed plate high pressure heat exchanger |
| DE102004003790A1 (en) * | 2004-01-23 | 2005-08-11 | Behr Gmbh & Co. Kg | Heat exchangers, in particular oil / coolant coolers |
| WO2005088223A1 (en) * | 2004-03-11 | 2005-09-22 | Behr Gmbh & Co. Kg | Stacked-plate heat exchanger |
| WO2007036963A1 (en) * | 2005-09-30 | 2007-04-05 | Gianni Candio | Method for manufacturing a plate heat exchanger having plates connected through melted contact points and heat exchanger obtained using said method |
| KR101198457B1 (en) * | 2006-09-01 | 2012-11-06 | 엘지전자 주식회사 | Water cooling type air conditioner |
| PL2202476T3 (en) | 2008-12-29 | 2016-09-30 | Method of manufacturing a welded plate heat exchanger | |
| FR2943774B1 (en) * | 2009-03-24 | 2013-12-20 | Valeo Systemes Thermiques | CONDENSER HAVING TWO HEAT EXCHANGE BLOCKS FOR AIR CONDITIONING CIRCUIT |
| FR2954480B1 (en) | 2009-12-17 | 2012-12-07 | Valeo Systemes Thermiques | HEAT EXCHANGER PLATE, IN PARTICULAR FOR AN AIR CONDITIONING CONDENSER |
| DE102011051935A1 (en) | 2011-07-19 | 2013-01-24 | Benteler Automobiltechnik Gmbh | Method for manufacturing heat exchanger i.e. motor car heat exchanger, involves producing welding points by resistance welding of heat exchanger inner surface with turbulator insert, and coupling inner surface with insert by soldering |
| JP5727327B2 (en) * | 2011-08-08 | 2015-06-03 | 株式会社神戸製鋼所 | Heat exchanger |
| US9933214B2 (en) | 2011-11-30 | 2018-04-03 | Mitsubishi Electric Corporation | Plate heat exchanger and refrigeration cycle apparatus including the same |
| KR101707046B1 (en) * | 2014-12-30 | 2017-02-17 | 갑을오토텍(주) | Oil cooler |
| DE102015203141A1 (en) * | 2015-02-20 | 2016-08-25 | Mahle International Gmbh | Heat exchanger |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB867869A (en) * | 1957-06-14 | 1961-05-10 | Rolls Royce | Improvements in or relating to heat exchangers |
| SE8501599D0 (en) * | 1985-04-01 | 1985-04-01 | Torell Ab | DEVICE OF A PLATE HEAT EXCHANGER |
| JPH0648151B2 (en) * | 1990-07-10 | 1994-06-22 | 株式会社日阪製作所 | Plate heat exchanger |
| IT1263611B (en) * | 1993-02-19 | 1996-08-27 | Giannoni Srl | PLATE HEAT EXCHANGER |
| DE4437877C2 (en) * | 1994-10-22 | 1997-08-07 | Behr Gmbh & Co | Heat exchangers, especially oil coolers |
| DE19549801B4 (en) | 1995-03-31 | 2008-01-17 | Behr Gmbh & Co. Kg | Plate heat exchanger |
| EP0742418B1 (en) * | 1995-05-10 | 1998-12-09 | Längerer & Reich GmbH | Plate heat exchanger |
| AT407920B (en) * | 1997-03-25 | 2001-07-25 | Ktm Kuehler Gmbh | PLATE HEAT EXCHANGERS, ESPECIALLY OIL COOLERS |
-
1999
- 1999-06-21 FR FR9907830A patent/FR2795165B1/en not_active Expired - Lifetime
-
2000
- 2000-05-23 EP EP20000401418 patent/EP1063486B1/en not_active Expired - Lifetime
- 2000-05-23 DE DE2000623992 patent/DE60023992T2/en not_active Expired - Lifetime
- 2000-06-20 JP JP2000184293A patent/JP2001056192A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001056192A (en) | 2001-02-27 |
| FR2795165A1 (en) | 2000-12-22 |
| DE60023992T2 (en) | 2006-07-27 |
| EP1063486A1 (en) | 2000-12-27 |
| DE60023992D1 (en) | 2005-12-22 |
| FR2795165B1 (en) | 2001-09-07 |
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