EP1063488B1 - Echangeur de chaleur à plaques, notamment pour refroidir une huile d'un véhicule automobile - Google Patents
Echangeur de chaleur à plaques, notamment pour refroidir une huile d'un véhicule automobile Download PDFInfo
- Publication number
- EP1063488B1 EP1063488B1 EP20000401420 EP00401420A EP1063488B1 EP 1063488 B1 EP1063488 B1 EP 1063488B1 EP 20000401420 EP20000401420 EP 20000401420 EP 00401420 A EP00401420 A EP 00401420A EP 1063488 B1 EP1063488 B1 EP 1063488B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- fluid
- plates
- exchanger according
- corrugations
- 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.)
- Expired - Lifetime
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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
-
- 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
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 in which said peripheral edges are tightly assembled to delimit between the plates the first flow channels for a first fluid which alternate with second channels flow for a second fluid, the exchanger comprising in addition to an inlet and an outlet for the first fluid as well that an inlet and an outlet for the second fluid.
- a heat exchanger of this type also called a “heat exchanger with plates “, or” blade exchanger ", is known in particular according to publication DE-A-195 11 991.
- Such a heat exchanger heat is used for example as a cooler automotive oil, for cooling engine oil or cooling the oil of the automatic gearbox, by exchange thermal with coolant, usually the one used to cool the vehicle engine.
- the plates are usually made by stamping a metal sheet, and are stacked so that their peripheral edges respective fit into each other and be then brazed together to seal, which used to define fluid circulation channels.
- the heat exchanger thus results from a stack of plates and does not require a housing.
- An inlet manifold and a manifold are then provided. outlet for a first fluid which communicate with a first series of channels, as well as an inlet pipe and an outlet pipe for a second fluid which communicate with a second set of channels, so that the channels of the first series alternate with the channels of the second series.
- the plates have openings located to the right of the aforementioned tubing and alternatively sealed, or by stampings, either by added rings, to ensure or prohibit the passage of one or the other fluid.
- These plates have a generally flat bottom and it is provided, in each flow channel, a disturbing element to promote a turbulent flow of the fluid and therefore heat exchange.
- the object of the invention is in particular to overcome the drawbacks supra.
- the invention also aims to provide such a heat exchanger. plate heat to improve heat exchange between the two fluids, without increasing the loss of load of the circuit of the first fluid and of the circuit of the second fluid.
- An exchanger corresponding to the preamble of claim 1 is known from G.B 2 278 430.
- the invention provides a heat exchanger of the type defined in the introduction, in which the plates are identical to each other and have the general shape of a square, said plates each have a bottom having undulations defined by generators extending in a given direction, and these plates are arranged alternately being rotated 90 ° relative to the plate (s) adjacent (s), so that each channel is delimited by ripples crossed at 90 °, and in which the entry and the outlet of the first fluid lie substantially on a diagonal of the square, while the input and output of the second fluid are located substantially on another diagonal of the square.
- the heat exchanger is formed from plates of a single type which reduces the number of types of parts and facilitates assembly operations.
- fluid inlets and outlets are arranged on diagonals of the square, it is possible to superimpose one plate above another by rotating it 90 °.
- the undulations give a value for the hydraulic diameter determined and equal for the two fluids.
- the undulations of two adjacent plates are preferably in mutual contact.
- the corrugations of the plates are advantageously shaped substantially sinusoidal.
- the plates are formed by stamping a metal sheet, preferably based on aluminum.
- the raised edges of the plates are advantageously assembled between them by soldering.
- the exchanger heat is realized in the form of a cooler motor vehicle oil, in which one of the fluids is engine oil or transmission oil automatic vehicle speeds while the other fluid is a coolant.
- the heat exchanger shown in Figure 1 includes a multiplicity of plates 10, also called “half-blades”, stacked in a direction of assembly or stacking, according to an assembly technique called “scales”.
- the plates 10 are here identical to each other and have each a bottom 12 surrounded by a peripheral edge 14 which is generally flat and raised upwards.
- the bottom 12 a here the shape of a square with rounded angles and it is provided corrugations 16, of substantially sinusoidal shape, defined by generators parallel to each other and parallel to two opposite sides 18 of the square and therefore perpendicular to the two other opposite sides 20 of the square ( Figures 1 and 3).
- the plates 10 are formed by stamping a sheet metallic, preferably based on aluminum, which is advantageously coated with solder plating on at least one of its faces.
- the plates 10 are stacked and thus come into mutual contact at their periphery by their respective raised edges 14, which are brazed together to ensure a tight mechanical connection.
- the plates 10 are arranged alternately, being at each times each rotated 90 ° relative to the plate (s) adjacent (s), so that the respective undulations 16 of two adjacent plates are crossed at 90 ° ( Figure 2). Through elsewhere, the undulations of two adjacent plates 10 are in contact with each other.
- the plates 10 thus define between them channels 22 for a first fluid F1 which alternate with channels 24 for a second fluid F2.
- the heat exchanger further includes (Figure 1) a inlet tubing 26 and outlet tubing 28 for the first fluid F1, as well as an inlet pipe 30 and a outlet pipe 32 for the second fluid F2.
- Tubing 26 and 28 are on a diagonal of the square formed by the plate 10 located at one end of the stack and the pipes 30 and 32 are on another diagonal of this square (figure 3).
- Tubing 26, 28, 30 and 32 are mounted respectively on four circular openings 34, 36, 38 and 40 from the top plate of the stack ( Figure 3). These openings all have the same diameter and are located at equal distance from the center of the square. So when the plates 10 are stacked, they can communicate with each other by four series of aligned openings.
- Tubing 26, 28, 30 and 32 extend inside of the stack and means are provided for making communicate the pipes 26 and 28 with the first channels 22, on the one hand, and the pipes 30 and 32 with the second channels 24, on the other hand. These means of communication, in themselves known, are not described. Details on this can be found in particular in publication DE-A-195 11 991 cited above.
- the respective corrugations 16 of the plates 10 allow give channels 22 and 24 a three-dimensional structure which promotes turbulent fluid flow F1 and F2 fluid and therefore a good exchange thermal between them. This removes the items disruptive which, until now, had been considered as needed in this type of heat exchangers at plates.
- the diameter hydraulic channel 22 and 24 has a selected value.
- h represents half of the maximum spacing between the respective peaks 40 and 42 respective corrugations 16 of two adjacent plates 10.
- 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 advantageously constitutes 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 made up of this oil, while the other fluid is consisting of a cooling fluid. This last one is advantageously the liquid which is usually used for motor vehicle engine cooling.
- the heat exchanger When the heat exchanger is used to cool engine oil, it is then fixed either directly on the engine block, either on a connected filtration unit directly to the engine.
- the exchanger can then be connected to the coolant circuit through conduits.
- the heat exchanger can be connected directly to the oil pan of the gearbox speeds.
Landscapes
- 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)
Description
Selon l'invention, chaque canal possède un diamètre hydraulique (Dh) de valeur choisie, définie par la relation Dh = 2.h, où h représente la 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.
- 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 de dessus de l'échangeur de chaleur de la figure 1.
Claims (9)
- Echangeur de chaleur comprenant une multiplicité de plaques empilées (10) munies chacune d'un bord périphérique relevé (14), et dans lequel lesdits bords périphériques sont assemblés de manière étanche pour délimiter entre les plaques des premiers canaux d'écoulement (22) pour un premier fluide (F1) qui alternent avec des seconds canaux d'écoulement (24) pour un second fluide (F2), l'échangeur comprenant en outre une entrée (26) et une sortie (28) pour le premier fluide (F1) ainsi qu'une entrée (30) et une sortie (32) pour le second fluide (F2),
caractérisé en ce que les plaques (10) sont identiques entre elles et ont la forme générale d'un carré, en ce qu'elles présentent chacune un fond (12) ayant des ondulations (16) définies par des génératrices s'étendant dans une direction donnée, en ce que les plaques (10) sont disposées en alternance en étant tournées de 90° par rapport à la (aux) plaque(s) adjacente(s), de sorte que chaque canal (22 ; 24) est délimité par des ondulations croisées à 90°, et en ce que l'entrée (26) et la sortie (28) du premier fluide (F1) se situent sensiblement sur une diagonale du carré, tandis que l'entrée (30) et la sortie (32) du second fluide (F2) se situent sensiblement sur une autre diagonale du carré. - Echangeur de chaleur selon la revendication 1, caractérisé en ce que chaque canal (22 ; 24) possède un diamètre hydraulique (Dh) de valeur choisie, définie par la relation Dh = 2.h, où h représente la demi-hauteur du canal, c'est-à-dire la moitié de l'espacement maximal entre les crêtes respectives (40, 42) des ondulations respectives (16) des plaques adjacentes (10) délimitant le canal.
- Echangeur de chaleur selon la revendication 2, caractérisé en ce que la valeur du diamètre hydraulique Dh est comprise entre 1 et 3 mm.
- Echangeur de chaleur selon l'une des revendications 2 et 3, caractérisé en ce que la valeur du diamètre hydraulique Dh est sensiblement égale à 1,8 mm.
- Echangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que les ondulations (16) de deux plaques (10) adjacentes sont en contact mutuel.
- Echangeur de chaleur selon l'une des revendications 1 à 5, caractérisé en ce que les ondulations (16) des plaques (10) sont de forme sensiblement sinusoïdale.
- Echangeur de chaleur selon l'une des revendications 1 à 6, caractérisé en ce que les plaques (10) sont formées par emboutissage d'une tôle métallique, de préférence à base d'aluminium.
- Echangeur de chaleur selon l'une des revendications 1 à 7, caractérisé en ce que les bords relevés (14) des plaques (10) sont assemblés entre eux par brasage.
- Echangeur de chaleur selon l'une des revendications 1 à 8, caractérisé en ce que l'un des fluides est l'huile d'un moteur ou l'huile d'une boíte de vitesses automatique d'un véhicule automobile, tandis que l'autre fluide est un fluide de refroidissement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9907835A FR2795167B1 (fr) | 1999-06-21 | 1999-06-21 | Echangeur de chaleur a plaques, notamment pour refroidir une huile d'un vehicule automobile |
FR9907835 | 1999-06-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1063488A1 EP1063488A1 (fr) | 2000-12-27 |
EP1063488B1 true EP1063488B1 (fr) | 2003-06-25 |
Family
ID=9547056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000401420 Expired - Lifetime EP1063488B1 (fr) | 1999-06-21 | 2000-05-23 | Echangeur de chaleur à plaques, notamment pour refroidir une huile d'un véhicule automobile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1063488B1 (fr) |
JP (1) | JP2001027490A (fr) |
DE (1) | DE60003496T2 (fr) |
ES (1) | ES2204466T3 (fr) |
FR (1) | FR2795167B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007500836A (ja) * | 2003-08-01 | 2007-01-18 | ベール ゲーエムベーハー ウント コー カーゲー | 熱交換器およびその製造方法 |
DE102004003790A1 (de) * | 2004-01-23 | 2005-08-11 | Behr Gmbh & Co. Kg | Wärmetauscher, insbesondere Öl-/Kühlmittel-Kühler |
SE531472C2 (sv) * | 2005-12-22 | 2009-04-14 | Alfa Laval Corp Ab | Värmeväxlare med värmeöverföringsplatta med jämn lastfördelning på kontaktpunkter vid portområden |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2216539B1 (fr) * | 1973-02-02 | 1976-09-10 | Chaffoteaux Et Maury | |
FI79409C (fi) * | 1987-07-13 | 1989-12-11 | Pentti Raunio | Foerfarande foer konstruering av en vaermevaexlare jaemte enligt foerfarandet konstruerad vaermevaexlare. |
IT1263611B (it) * | 1993-02-19 | 1996-08-27 | Giannoni Srl | Scambiatore di calore a piastre |
EP0699292B1 (fr) * | 1993-05-29 | 1998-06-10 | Bowman E.J. (Birmingham) Ltd. | Echangeur de chaleur |
DE19511991C2 (de) | 1995-03-31 | 2002-06-13 | Behr Gmbh & Co | Plattenwärmetauscher |
AT407920B (de) * | 1997-03-25 | 2001-07-25 | Ktm Kuehler Gmbh | Plattenwärmetauscher, insbesondere ölkühler |
-
1999
- 1999-06-21 FR FR9907835A patent/FR2795167B1/fr not_active Expired - Lifetime
-
2000
- 2000-05-23 DE DE60003496T patent/DE60003496T2/de not_active Expired - Lifetime
- 2000-05-23 ES ES00401420T patent/ES2204466T3/es not_active Expired - Lifetime
- 2000-05-23 EP EP20000401420 patent/EP1063488B1/fr not_active Expired - Lifetime
- 2000-06-20 JP JP2000184218A patent/JP2001027490A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP1063488A1 (fr) | 2000-12-27 |
DE60003496T2 (de) | 2004-05-19 |
ES2204466T3 (es) | 2004-05-01 |
DE60003496D1 (de) | 2003-07-31 |
FR2795167B1 (fr) | 2001-09-14 |
JP2001027490A (ja) | 2001-01-30 |
FR2795167A1 (fr) | 2000-12-22 |
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