EP1065463B1 - Wärmetauscher für Kraftfahrzeug - Google Patents

Wärmetauscher für Kraftfahrzeug Download PDF

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Publication number
EP1065463B1
EP1065463B1 EP00305448A EP00305448A EP1065463B1 EP 1065463 B1 EP1065463 B1 EP 1065463B1 EP 00305448 A EP00305448 A EP 00305448A EP 00305448 A EP00305448 A EP 00305448A EP 1065463 B1 EP1065463 B1 EP 1065463B1
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EP
European Patent Office
Prior art keywords
dimpled
shell element
plain
shell
gallery
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
Application number
EP00305448A
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English (en)
French (fr)
Other versions
EP1065463A2 (de
EP1065463A3 (de
Inventor
Gwyn Thomas
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.)
Marelli Automotive Systems UK Ltd
Original Assignee
Calsonic Kansei UK Ltd
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 Calsonic Kansei UK Ltd filed Critical Calsonic Kansei UK Ltd
Publication of EP1065463A2 publication Critical patent/EP1065463A2/de
Publication of EP1065463A3 publication Critical patent/EP1065463A3/de
Application granted granted Critical
Publication of EP1065463B1 publication Critical patent/EP1065463B1/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
    • 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
    • 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

Definitions

  • the present invention relates to a vehicle heat exchanger and in particular to a vehicle heat exchanger for use as an oil cooler in automotive applications.
  • Oil coolers of brazed aluminium construction are known. These typically comprise a plurality of stacked brazable aluminium plates having interposed therebetween planar apertured turbulators.
  • the turbulators space the plates defining fluid receiving galleries and provide a flow matrix for inducing agitated flow through the oil cooler.
  • the galleries are arranged in alternating fluid connection in the stack, a first connected gallery system defining a flowpath through the oil cooler for a cooling fluid (typically water); a second connected gallery system defining a flowpath through the oil cooler for the oil to be cooled.
  • the turbulators for the 'oil side' galleries and the 'water side' galleries are typically substantially identical (and of the same depth). The depth of the 'oil side' and 'water side' galleries is therefore substantially identical.
  • the present invention seeks to provide an improved heat exchanger (particularly an oil cooler) of enhanced construction, durability and performance.
  • Prior art heat exchangers are disclosed in, for example, EP-742418, DE-9309741 and EP-623798.
  • the arrangement described in EP-623798 may be described as comprising a vehicle heat exchanger comprising a plurality of stacked galleries, including a first gallery system for containing a first fluid, and a second gallery system for containing a second fluid, the first and second gallery systems being substantially sealed from one another, the gallery systems being defined by a plurality of stacked elements comprising:
  • the dimples formed in the dimpled shell elements project upwardly in the same general direction as the tapered peripheral wall of the respective dimpled shell element.
  • the elements comprising the heat exchanger are of brazable aluminium.
  • the plain shell element and/or the dimpled shell element and/or the turbulator are clad in a fusible brazing alloy when assembled, the fusible brazing alloy flowing during brazing to bond adjacent components at contact points.
  • galleries in the first gallery system are of a depth less than galleries in the second gallery system (the “oil side” galleries). This leads to the space saving benefits identified above.
  • the nested stacked sequence of dimpled shell, plain shell, turbulator element preferably repeats, typically to provide between 5 and 9 galleries in each gallery system.
  • the peripheral wall of the plain shell element desirably extends beyond the peripheral wall of the dimpled shell element within which the plain shell element is nested.
  • peripheral walls of the nesting dimpled shell element the nested plain shell element and the further nested dimpled shell element beneficially define the outer wall of the heat exchanger.
  • Tapering nesting peripheral walls for the dimpled and plain shell elements are particularly beneficial in accordance with the invention because good contact for brazing is ensured by the dimples of the dimpled shell element abutting (and defining the nesting overlap with) the plain shell element.
  • the spaced dimples preferably taper from a root portion to a head portion, the head portion of a respective dimple desirably comprising a flat.
  • the flat abuts against a respective portion of the plain shell element and provides improved contact surfaces for brazing.
  • the turbulator element advantageously comprises a substantially planar element such as a turbulator plate, preferably including a plurality of apertures or formations permitting fluid flow through the turbulator element (and along the gallery).
  • the turbulator element beneficially has an undulating profile including a series of undulations (preferably comprising spaced linear ridge lines) defining contact points with the adjacent dimpled shell element and shell element.
  • the spaced elongate ridges of the turbulator are beneficially so spaced and arranged relative to the dimpled plate that contact with the dimpled shell is substantially with un-dimpled contact points.
  • the plain shell element and dimpled shell element preferably have nested peripheral walls brazed together, as preferably have the plain shell element and further dimpled shell element.
  • a fluid supply inlet and outlet is provided for the first gallery system, and a fluid supply inlet and outlet is provided for the second gallery system.
  • Fluid communication means between successively stacked galleries in the same gallery system is provided.
  • the fluid communication means comprises co-aligned apertures in the plain shell elements and dimpled shell elements, the co-aligned apertures having respective rims arranged either to seal against one another or be spaced from one another depending upon the fluid to be carried in a respective gallery. It is therefore preferred that both the dimpled and plain shell elements have respective co-aligned apertures having rims projecting toward the other of the respective dimpled or shell element.
  • the fluid galleries are stacked alternately, such that adjacent galleries comprise galleries from alternate gallery systems.
  • a heat exchanger according to the invention may be manufactured by building a stacked assembly of brazable aluminium elements comprising:
  • the oil cooler 1 is of brazed aluminium construction and comprises a series of nested stacked aluminium shells 2, 4 brazed to form the structure shown in Figure 1.
  • the stacked shells 2, 4 define therebetween a "water side” gallery system communicating between a water inlet 5 and a water outlet (not shown in Figure 1) communicating through a top plate 6 of the oil cooler.
  • a second gallery system is also defined by the shells 2, 4 comprising an "oil side” gallery system communicating between an oil inlet 7 and an oil outlet (not shown in Figure 1) communicating via base plate 8.
  • the gallery system is arranged such that the stacked arrangement has "water side” galleries alternating with “oil side” galleries.
  • Water flowing between the water inlet 5 and water outlet gains access to all water side galleries via apertures 9a, 10a, 9b, 10b provided in shell plates 2, 4 respectively.
  • Upwardly extending rims 11, 12 provided for apertures 9b, 10b are sealingly brazed to the peripheral edge of respective apertures 9a, 10a to prevent ingress into the "oil side” gallery system (and vice versa).
  • a vertical water “core” (having axis X) is shown in Figure 1 formed by stacked co-aligned apertures 10a,10b. Corresponding cores exist for the co-aligned apertures 9a, 9b and oil side apertures 16a, 16b and 17a, 17b.
  • Dimpled shell 2 includes a spanning portion 13 terminating in an outwardly and upwardly inclined peripheral wall 14. Spanning portion 13 is provided with an array of dimpled projections 15, projecting upwardly in the corresponding direction to peripheral wall 14. On its obverse side spanning portion 13 is provided with a series of dimpled depressions (resulting from the deformation of plate 13 during the forming of the dimples 15). Apertures 16a, 17a in dimpled shell 2 and apertures 16b, 17b in plain shell 4 define the oil flow path through the oil cooler, permitting water to flow into the "oil side" galleries defined between the dimpled depressions on the underside of dimpled shell 2 and the planar uppermost surface 18 of plain shell 4.
  • the underside surface of a plain shell 4 sits on the dimpled projections 15 (of an underlaying dimpled shell 2).
  • the dimples thereby space an upper plain shell 4 from an underlying, nesting dimpled shell 2.
  • the outer peripheral wall 21 of plain shells 4 is inclined correspondingly to the outer peripheral wall 14 of dimpled shells 2 facilitating ease of nesting and ensuring that a plain shell 4 is snugly received in a respective underlying dimpled shell 2 such that the respective tapered walls 21, 14 are in face to face abutment with one another. This provides a good contact surface for brazing.
  • the tolerance required for nesting is relatively liberal.
  • the dimpled projections 15 extend from a root portion 22 extending to a pinnacle in the form of a "flat" 23.
  • the flat 23 provides a good contact surface for brazing with the underside of an above nesting plain shell 4.
  • the water side galleries are defined between dimpled shells 2 and above nested shells 4 in the space across which dimples 15 project.
  • Dimples 15 ensure good brazing contact between nested shells 4, 2 and also ensure that the water side galleries do not deform when the oil cooler is pressurised.
  • the oil side galleries are defined between dimpled shells 2 and underlying plain shells 4, a turbulator plate 13 being present in the space between the upper surface 18 of plain element 4 and the dimpled depression underside of an overlying dimpled shell 2.
  • the turbulator plate 13 may be of a form generally known in the art, and comprises a pressed aluminium component having a plurality of ridge formations extending generally transversely to the major axis of the turbulator plate, the ridges including a multiplicity of apertures permitting oil flow throughout the gallery.
  • the upper surface of the turbulator plate 3 is brazed to the dimpled depression underside of overlaid dimpled shell 2.
  • the underside of turbulator plate 3 is brazed to the planer surface of an underlaid plain shell 4.
  • the turbulator plates 3 are nested in respective plain shells 2 during assembly.
  • the side wall 21 extends upwardly beyond the top surface of turbulator plate 3 permitting the nesting of an overlaying dimpled shell 2 within the side wall 21.
  • dimpled projections 15 and the depth of turbulator to plate 3 are arranged such that the "water side" galleries are of less depth than the "oil side” galleries. This is because it has been found that in view of the relatively higher heat capacity of water compared to oil, an "additional" turbulator (corresponding to the oil side turbulator 3) is not required in the water side gallery, the dimples 15 providing sufficient water agitation and surface area for good oil cooler performance to be achieved.
  • the dimple projections 15 provide good brazing and sufficient structural integrity to avoid collapsing or bursting of the water galleries when the heat exchanger is pressurised with oil and water.
  • the overall dimensions of the oil cooler can therefore be reduced compared to prior art arrangements.
  • the nesting arrangement in which peripheral walls nest with dimpled shells 2 (and vice versa) provides an extremely convenient way of assembling a stacked oil cooler for brazing.

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)
  • Air-Conditioning For Vehicles (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (8)

  1. Wärmetauscher für Fahrzeuge (1) mit einer Mehrzahl gestapelter Galerien, umfassend
    ein erstes Galeriesystem zur Aufnahme einer ersten Flüssigkeit und
    ein zweites Galeriesystem zur Aufnahme einer zweiten Flüssigkeit,
    die gegeneinander im Wesentlichen abgedichtet sind
    und die durch eine Mehrzahl gestapelter Elemente definiert werden, die umfassen:
    i) ein Vertiefungen aufweisendes Wannenelement (2), das eine auswärts und nach oben geneigte Außenwand (14) und eine Mehrzahl von voneinander beabstandeten Vertiefungen (15) umfasst, die in eine Oberfläche (13) des Vertiefungen aufweisenden Wannenelements (2) eingeformt sind und aus dieser herausragen,
    ii) ein ebenes Wannenelement (4),
    das in dem Vertiefungen aufweisenden Wannenelement (2) verschachtelt ist und
    das eine Oberfläche (18) hat, die mit der Mehrzahl der herausragenden Vertiefungen (15) des Vertiefungen aufweisenden Wannenelements (2) ist Kontakt steht und
    das eine sich verjüngende Außenwand (21) umfasst,
    die, in Kontakt mit der korrespondierenden, auswärts und nach oben geneigten Außenwand (14) des Vertiefungen aufweisenden Wannenelements (2) stehend, mit dieser verschachtelt ist, so dass die herausragenden Vertiefungen (15) des Vertiefungen aufweisenden Wannenelements (2) an das mit diesem verschachtelte ebene Wannenelement (4) angrenzen und den Verschachtelungsüberlapp der sich verjüngenden Außenwände (14, 21) bilden,
    wobei eine erste Galerie zwischen dem ebenen Wannenelement (4) und dem Vertiefungen aufweisenden Wannenelement (2) gebildet ist,
    iii) ein Turbulatorelement (3), das mit dem ebenen Wannenelement (4) verschachtelt ist und
    iv) ein weiteres, Vertiefungen aufweisenden Wannenelement (2),
    das in das ebene Wannenelement (4) verschachtelt ist und
    das eine auswärts und nach oben geneigte Außenwand (14) umfasst,
    die, in Kontakt mit der korrespondierenden, sich verjüngenden Außenwand (21) des ebenen Wannenelements (4) stehend, mit dieser verschachtelt ist und
    das eine Mehrzahl von voneinander beabstandeten Vertiefungen (15) umfasst, die aus dem Turbulatorelement (3) herausragen,
    wobei eine zweite Galerie zwischen dem weiteren Vertiefungen aufweisenden Wannenelement (2) und dem eingeschachtelten ebenen Wannenelement (4) gebildet ist, die das Turbulatorelement (3) beherbergt,
    dadurch gekennzeichnet, dass
    die in das Vertiefungen aufweisenden Wannenelement (2) eingeformten Vertiefungen nach oben in die gleiche allgemeine Richtung herausragen wie die sich verjüngende Außenwand (14) des entsprechenden, Vertiefungen aufweisenden Wannenelements (2).
  2. Wärmetauscher (1) für Fahrzeuge nach Anspruch 1, bei dem erste Galerien eine geringere Tiefe haben als zweite Galerien.
  3. Wärmetauscher (1) für Fahrzeuge nach Anspruch 1 oder 2, bei dem die Außenwand (21) des ebenen Wannenelements (4) sich über die Außenwand (14) des Vertiefungen aufweisenden Wannenelements (2) hinaus erstreckt, innerhalb dessen ebenen Wannenelements (4) es eingeschachtelt ist.
  4. Wärmetauscher (1) für Fahrzeuge nach einem der vorstehenden Ansprüche, bei dem sich die voneinander beabstandeten Vertiefungen (15) von einem Grundabschnitt (22) zu einem Kopfabschnitt (23) hin verjüngen, der eine Ebene (23) aufweist.
  5. Wärmetauscher (1) für Fahrzeuge nach einem der vorstehenden Ansprüche, bei dem das Turbulatorelement (3) ein gewelltes Profil hat,
    das eine Serie von Wellen aufweist,
    die Kontaktpunkte mit dem benachbarten Vertiefungen aufweisenden Wannenelementen (2) und dem Wannenelement (4) definieren und
    wobei die Wellen vorzugsweise voneinander beabstandete, längliche Rippen umfassen, wobei die voneinander beabstandeten, länglichen Rippen des Turbulators (3) so voneinander beabstandet und relativ zum Vertiefungen aufweisenden Wellenelement (2) angeordnet sind, dass ein Kontakt mit dem Vertiefungen aufweisenden Wellenelement (3) im Wesentlichen in Kontaktpunkten ohne Vertiefung stattfindet.
  6. Wärmetauscher (1 ) für Fahrzeuge nach einem der vorstehenden Ansprüche aus einer gelöteten Aluminium-Konstruktion, bei dem das ebene Wannenelement (4) und das Vertiefungen aufweisende Wannenelement (2) zusammengelötete, ineinander geschachtelte Außenwände (14, 21) hat und die Vertiefungen (15) des Vertiefungen aufweisenden Wannenelement (2) an entsprechend benachbarte ebene Wannenelementen angelötet sind.
  7. Wärmetauscher (1) für Fahrzeuge nach einem der vorstehenden Ansprüche, bei dem ein erster Flüssigkeitseinlass und Flüssigkeitsauslass (5) für das erste Galeriesystem und ein zweiter Flüssigkeitseinlass und Flüssigkeitsauslass (7) für das zweite Galeriesystem vorgesehen sind und
    Mittel zur Flüssigkeitskommunikation zwischen sukzessive geschachtelten Galerien im entsprechenden Galeriesystem vorgesehen sind,
    die miteinander fluchtende Paare von Öffnungen (9a, 9b, 10a, 10b, 16a, 16b, 17a, 17b) in einem ebenen Wannenelement (4)
    und ein benachbartes, Vertiefungen aufweisenden Wannenelement (2) umfassen,
    bei denen ein erstes miteinander fluchtendes Paar von Öffnungen (9a, 9b, 10a, 10b) entsprechende Berandungen aufweist, die zum Bilden einer Dichtung gegeneinander ausgebildet sind,
    und bei denen ein zweites miteinander fluchtendes Paar von Öffnungen (16a, 16b, 17a, 17b) sie voneinander beabstandende Berandungen hat.
  8. Wärmetauscher (1) für Fahrzeuge nach einem der vorstehenden Ansprüche, bei dem:
    i) die Galerien alternierend geschachtelt sind, so dass eine benachbarte Galerie Galerien von jeweils abwechselnden Galeriesysteme umfasst, und/oder
    ii) der Wärmetauscher (1) einen Ölkühler umfasst, in dem Kühlmittel (so wie Wasser) dem ersten Galeriesystem und zu kühlendes Öl dem zweiten Galeriesystem zugeführt ist.
EP00305448A 1999-07-02 2000-06-29 Wärmetauscher für Kraftfahrzeug Expired - Lifetime EP1065463B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9915573 1999-07-02
GB9915573A GB2355300B (en) 1999-07-02 1999-07-02 A vehicle heat exchanger

Publications (3)

Publication Number Publication Date
EP1065463A2 EP1065463A2 (de) 2001-01-03
EP1065463A3 EP1065463A3 (de) 2001-08-08
EP1065463B1 true EP1065463B1 (de) 2004-04-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00305448A Expired - Lifetime EP1065463B1 (de) 1999-07-02 2000-06-29 Wärmetauscher für Kraftfahrzeug

Country Status (4)

Country Link
EP (1) EP1065463B1 (de)
AT (1) ATE264491T1 (de)
DE (1) DE60009798T2 (de)
GB (1) GB2355300B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005012501A1 (de) * 2005-03-16 2006-09-21 Behr Industry Gmbh & Co. Kg Vorrichtung zur Kühlung von elektronischen Bauteilen
AT508058B1 (de) 2009-03-05 2011-01-15 Mahle Int Gmbh Plattenwärmetauscher
US10619530B2 (en) 2015-01-26 2020-04-14 Modine Manufacturing Company Thermal management unit for vehicle powertrain
US10087793B2 (en) * 2015-01-26 2018-10-02 Modine Manufacturing Company Thermal management unit for vehicle powertrain
EP3444557B1 (de) 2017-08-17 2023-03-29 Valeo Autosystemy SP. Z.O.O. Wärmetauscher mit verstärkungsmittel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623798A2 (de) * 1993-05-05 1994-11-09 Behr GmbH & Co. Plattenwärmetauscher, insbesondere Öl/Kühlmittel-Kühler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9318635U1 (de) * 1993-05-05 1994-02-03 Behr Gmbh & Co Plattenwärmetauscher, insbesondere Öl/Kühlmittel-Kühler
DE9309741U1 (de) * 1993-06-30 1993-08-26 Filterwerk Mann & Hummel Gmbh, 71638 Ludwigsburg Wärmetauscher
DE19549801B4 (de) * 1995-03-31 2008-01-17 Behr Gmbh & Co. Kg Plattenwärmetauscher
DE59600935D1 (de) * 1995-05-10 1999-01-21 Laengerer & Reich Gmbh & Co Plattenwärmetauscher
AT405571B (de) * 1996-02-15 1999-09-27 Ktm Kuehler Gmbh Plattenwärmetauscher, insbesondere ölkühler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623798A2 (de) * 1993-05-05 1994-11-09 Behr GmbH & Co. Plattenwärmetauscher, insbesondere Öl/Kühlmittel-Kühler

Also Published As

Publication number Publication date
GB2355300B (en) 2003-07-16
GB9915573D0 (en) 1999-09-01
EP1065463A2 (de) 2001-01-03
DE60009798D1 (de) 2004-05-19
ATE264491T1 (de) 2004-04-15
DE60009798T2 (de) 2005-04-28
EP1065463A3 (de) 2001-08-08
GB2355300A (en) 2001-04-18

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