EP1063488A1 - Plattenwärmetauscher, insbesondere zum Kühlen von Kraftfahrzeugöl - Google Patents

Plattenwärmetauscher, insbesondere zum Kühlen von Kraftfahrzeugöl Download PDF

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Publication number
EP1063488A1
EP1063488A1 EP00401420A EP00401420A EP1063488A1 EP 1063488 A1 EP1063488 A1 EP 1063488A1 EP 00401420 A EP00401420 A EP 00401420A EP 00401420 A EP00401420 A EP 00401420A EP 1063488 A1 EP1063488 A1 EP 1063488A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plates
fluid
exchanger according
outlet
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.)
Granted
Application number
EP00401420A
Other languages
English (en)
French (fr)
Other versions
EP1063488B1 (de
Inventor
Ana Isabel Munoz
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 Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP1063488A1 publication Critical patent/EP1063488A1/de
Application granted granted Critical
Publication of EP1063488B1 publication Critical patent/EP1063488B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 than 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 the 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 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 cited above.
  • 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.
  • the invention provides for this purpose a heat exchanger of 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 value of the hydraulic diameter D h is substantially equal to 1.8 mm.
  • 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 aluminum-based, 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 turned 90 ° relative to the plate (s) adjacent (s), so that the respective corrugations 16 of two adjacent plates are crossed at 90 ° (figure 2). Through elsewhere, the corrugations 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)
EP20000401420 1999-06-21 2000-05-23 Plattenwärmetauscher, insbesondere zum Kühlen von Kraftfahrzeugöl Expired - Lifetime EP1063488B1 (de)

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 true EP1063488A1 (de) 2000-12-27
EP1063488B1 EP1063488B1 (de) 2003-06-25

Family

ID=9547056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000401420 Expired - Lifetime EP1063488B1 (de) 1999-06-21 2000-05-23 Plattenwärmetauscher, insbesondere zum Kühlen von Kraftfahrzeugöl

Country Status (5)

Country Link
EP (1) EP1063488B1 (de)
JP (1) JP2001027490A (de)
DE (1) DE60003496T2 (de)
ES (1) ES2204466T3 (de)
FR (1) FR2795167B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1711768A1 (de) * 2004-01-23 2006-10-18 Behr GmbH & Co. KG Wärmetauscher, insbesondere öl-/kühlmittel-kühler

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004036951A1 (de) * 2003-08-01 2005-05-25 Behr Gmbh & Co. Kg Wärmeübertrager sowie Verfahren zu dessen Herstellung
SE531472C2 (sv) * 2005-12-22 2009-04-14 Alfa Laval Corp Ab Värmeväxlare med värmeöverföringsplatta med jämn lastfördelning på kontaktpunkter vid portområden

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216539A1 (de) * 1973-02-02 1974-08-30 Chaffoteaux Et Maury
WO1989000671A1 (en) * 1987-07-13 1989-01-26 Pentti Raunio A method of constructing a heat exchanger and a heat exchanger constructed by using that method
EP0611941A2 (de) * 1993-02-19 1994-08-24 GIANNONI S.r.l. Plattenwärmetauscher und entsprechende Platten
GB2278430A (en) * 1993-05-29 1994-11-30 E J Bowman Plate stack heat exchanger
EP0867679A2 (de) * 1997-03-25 1998-09-30 KTM-Kühler GmbH Plattenwärmetauscher, insbesondere Ölkühler

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511991C2 (de) 1995-03-31 2002-06-13 Behr Gmbh & Co Plattenwärmetauscher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216539A1 (de) * 1973-02-02 1974-08-30 Chaffoteaux Et Maury
WO1989000671A1 (en) * 1987-07-13 1989-01-26 Pentti Raunio A method of constructing a heat exchanger and a heat exchanger constructed by using that method
EP0611941A2 (de) * 1993-02-19 1994-08-24 GIANNONI S.r.l. Plattenwärmetauscher und entsprechende Platten
GB2278430A (en) * 1993-05-29 1994-11-30 E J Bowman Plate stack heat exchanger
EP0867679A2 (de) * 1997-03-25 1998-09-30 KTM-Kühler GmbH Plattenwärmetauscher, insbesondere Ölkühler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1711768A1 (de) * 2004-01-23 2006-10-18 Behr GmbH & Co. KG Wärmetauscher, insbesondere öl-/kühlmittel-kühler

Also Published As

Publication number Publication date
FR2795167A1 (fr) 2000-12-22
EP1063488B1 (de) 2003-06-25
FR2795167B1 (fr) 2001-09-14
ES2204466T3 (es) 2004-05-01
DE60003496T2 (de) 2004-05-19
JP2001027490A (ja) 2001-01-30
DE60003496D1 (de) 2003-07-31

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