EP1711768A1 - Echangeur de chaleur, notamment radiateur d'huile/de liquide de refroidissement - Google Patents

Echangeur de chaleur, notamment radiateur d'huile/de liquide de refroidissement

Info

Publication number
EP1711768A1
EP1711768A1 EP04803538A EP04803538A EP1711768A1 EP 1711768 A1 EP1711768 A1 EP 1711768A1 EP 04803538 A EP04803538 A EP 04803538A EP 04803538 A EP04803538 A EP 04803538A EP 1711768 A1 EP1711768 A1 EP 1711768A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plate
base plate
outermost
recess
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.)
Ceased
Application number
EP04803538A
Other languages
German (de)
English (en)
Inventor
Rüdiger KÖBLIN
Jens Richter
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1711768A1 publication Critical patent/EP1711768A1/fr
Ceased legal-status Critical Current

Links

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
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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

  • Heat exchangers especially oil / coolant coolers
  • the invention relates to a heat exchanger, in particular a stacked disc oil cooler, in disc construction according to the preamble of claim 1.
  • EP 0 623 798 A2 discloses a plate heat exchanger with trough-shaped heat exchanger plates stacked one on top of the other, the circumferential edges of which lie against one another and are soldered tightly to one another, all heat exchanger plates having the same shape.
  • the bottom heat exchanger plate is closed by means of an end plate, the end plate lying flat on the bottom of the heat exchanger plate and openings for connections being provided in the end plate.
  • the end plate is completely flat.
  • a known stacked-plate oil cooler with an appropriately designed end plate is shown in FIGS. 9 and 10.
  • a heat exchanger in particular a stacked-plate oil cooler, is provided in a disc design, in which the base plate has a recessed surface corresponding to the adjacent heat exchanger plate.
  • the flanks of the outermost heat exchanger shear plate lie at least in their lower region on the flanks of the recessed contour of the base plate. Due to the form-fitting system, there is a large contact and thus connection area between the outermost heat exchanger plate and the base plate, so that with a corresponding connection by means of solder or the like. there is a good connection and thus an op-5 temporal power transfer, so that the base plate leads to a significantly increased stability of the heat exchanger.
  • An edge of the outermost heat exchanger plate preferably projects beyond the base plate, at least in its edge region in which it is connected to the adjacent heat exchanger plate.
  • the depression in the base plate is greater than the material thickness of the outermost heat exchanger plate of the heat exchanger, preferably at least as deep as the material thickness of the heat exchanger plate of heat exchanger 5 plus half the clear height between the outermost heat exchanger plate resting on the base plate and the second outermost heat exchanger plate.
  • the optimum is a depth of the depression which is at least as deep as the material thickness of the heat exchanger plate of the heat exchanger plus the clear height between the outermost heat exchanger plate lying on the base plate and the second outermost heat exchanger plate.
  • the contour in the base plate is preferably produced by means of embossing or machining. Other manufacturing processes are possible, for example the base plate can be cast.
  • Heat exchangers according to the invention can serve on the one hand as an oil cooler but also as an evaporator or condenser, or for example as a charge air / coolant cooler.
  • the cooling circuit of such a device can not only serve to air-condition a (vehicle) interior, but also to cool heat sources such as electrical consumers, energy stores and voltage sources or charge air of a turbocharger.
  • the heat exchanger is a condenser when, for example, condensation of the refrigerant in an air conditioning system takes place in a compact heat exchanger that is subjected to coolant and the coolant releases the heat in a heat exchanger to air as a further medium.
  • the evaporation or condensation of another medium in a heat exchanger designed in accordance with the invention can also take place, for example, in applications in fuel cell systems.
  • a method according to the invention for producing a heat exchanger, in particular a heat exchanger according to the invention provides that the base plate is produced by embossing the same, then a correspondingly aligned stacking of the heat exchanger plates and the base plate and then a connection by brazing.
  • the plates are joined by brazing in such a way that the plates are sealed together at their edges and, in particular, adjacent plates are connected at the points of contact of profiles.
  • a stable and torsionally rigid element is produced.
  • FIG. 1b shows a section through a stacked disc oil cooler along the line A-A of FIG. 3 according to a variant of the first embodiment
  • FIG. 2 is a perspective view of the stacked disc oil cooler of FIG. 1a
  • FIG. 3 shows a top view of the stacked disc oil cooler from FIG.
  • FIG. 4b shows a section through a stacked disc oil cooler according to a variant of the second exemplary embodiment
  • FIG. 5 shows a section through a stacked-plate oil cooler according to the third exemplary embodiment
  • FIG. 6 shows a section through a stacked-plate oil cooler according to the fourth exemplary embodiment
  • FIG. 7 is a detailed view of FIG. 6,
  • Fig. 8 shows a heat exchanger plate according to the third and fourth exemplary embodiment
  • Fig. 9 shows a section through a stacked disc oil cooler according to the prior art
  • FIG. 10 is a detailed view of detail B of FIG. 9.
  • a disk stack oil cooler 1 serving as a heat exchanger as disclosed for example in EP 0 623 798 A2, the disclosure of which is expressly included, has a plurality of stacked stamped and deep-drawn heat exchanger plates 2, between which coolant and oil flow in an alternating order , The direction of flow at the coolant connections is illustrated in FIG. 2 by arrows. The oil is fed in and out from below.
  • a base plate 3 is attached to the lowermost heat exchanger plate 2 on the underside thereof for attaching the oil connections and for mounting the disc stack oil cooler 1.
  • this base plate 3 has a depression 5, in the present case a recess, on its upper side 6, which is provided with a contour corresponding to the underside of the lowermost heat exchanger plate 2, at least in its lower, level plane Areas and in the area of the flanks.
  • the recess 5 was milled out of the rectangular base plate 3 by milling, the shape of the underside of the base plate 3 being unchanged.
  • the recess 5 has a depth which corresponds approximately to the material thickness of the lowermost heat exchanger plate 2 plus the clear height between the two lower heat exchanger plates 2.
  • the recess 5 is formed somewhat deeper than the recess 5 of the first exemplary embodiment, in the present case approximately twice the material thickness of the heat exchanger plates 2 plus the clear height between the two lowest heat exchanger plates 2.
  • the base plate 3 has a protruding area 8 on its underside to avoid excessive material displacements in the course of non-cutting machining, for example in an area continued from FIG Heat exchanger plates 2.
  • the projecting area 8 has a flat bottom. The protruding area 8 allows a greater depth of the recess 6 with the least possible deformation and material displacement of the base plate 3.
  • the depth of the recess 5 corresponds approximately to the depth of the recess 5 according to the variant of the first exemplary embodiment.
  • FIG. 5 shows, as a third exemplary embodiment, a section through a stacked-plate oil cooler 1 which is formed from interconnected heat exchanger plates 2 and a base plate 3. Cavities closed off from the outside are formed between the heat exchanger plates 2. The cavities are alternately supplied with at least one inflow and outflow lines with the first and second medium and are also flowed through by the corresponding medium.
  • the plates are profiled in such a way that 2 contact points occur between the respective profiles of the heat exchanger plates. In the area of these contact points, the heat exchanger plates 2 are integrally connected to each other, usually soldered.
  • the heat exchanger plates 2 are designed such that the flow of the first or second medium that forms between the heat exchanger plates 2 differs from the corresponding one Inflow pipe to the corresponding drain pipe is not straight.
  • An example of such a heat exchanger plate 2 is shown in FIG. 8.
  • the heat exchanger plates 2 can have a repeating wave profile which then runs at least in a direction transverse to the flow direction, which is the straight connection from the entry points of the medium to the exit points.
  • the wave profile is zigzag around this direction.
  • Such a wave profile forms flow guide areas in a simple manner, which are suitable for guiding the flow of the medium flowing through the corresponding cavity.
  • the course of the flow is thereby advantageously deflected or flows through several times in regions in which the distance between the heat exchanger plates 2 is designed to be different in size from one another.
  • the flow velocity therefore varies in these areas.
  • it is advantageously achieved that the medium as a whole is distributed over the entire area of the heat exchanger plates 2 and thus the most optimal use of the entire heat exchange area takes place.
  • the corrugated profile can have limbs extending in a straight line between flow regions, the course of the corrugated profile being characterized by the limb length of the limbs, the limb angle given between the limbs and the profile depth of the corrugated profile.
  • the cross section of the profile of a corrugated profile is determined by the course in the region of the legs and in the region of curvature. drafted configurations can provide a deviation of the cross-sectional shape in these areas.
  • the zigzag wave profile of the heat exchanger plates 2 is characterized in particular by the leg length, the leg angle between adjacent legs and the profile depth.
  • the leg length is in the range from 8 to 15 millimeters, preferably in the range from 9 to 12 millimeters.
  • Typical values of the profile depth - which is measured, for example, from the distance between a wave crest and the plate center plane - are in the range from 0.3 to 1.5 mm.
  • a profile depth between 0.5 and 1 mm can be advantageous for many applications, values of approximately 0.75 mm being preferred.
  • the leg angle between two legs of the wave profile is preferably between 45 ° and 135 °.
  • the heat exchanger plates 2 are connected in the area of the contact points by brazing, for which purpose the heat exchanger plates 2 are coated at least on one side with a soldering aid, such as solder.
  • the leg length and leg angle are preferably selected as a function of the medium flowing through and its viscosity. Leg length and leg angle have a great influence on the the flow velocities and the associated heat exchange, so that they are adapted to the respective purpose.
  • the values mentioned above relate in particular to the use of heat exchangers as an oil cooler in vehicles, where the heat exchange takes place between engine oil and cooling water. In addition, they are of course also dependent on the dimensions of the heat exchanger plates 2 and the space resulting from the distance between the heat exchanger plates 2.
  • the shape of the wave profile is essentially determined by the shape of the
  • Preferred configurations provide a constant division, that is to say a fixed distance between any two adjacent wave profiles.
  • the shape of the wave profile is particularly advantageous if it has a flat area on the outside of the wave back.
  • the flat area in particular has a width of 0.1 to 0.4 mm.
  • the flat area enables good, flat contact of adjacent heat exchanger plates 2 to one another and thus an easy and stable production of the support or connection - as by brazing - adjacent heat exchanger plates 2 to one another.
  • the heat exchanger plates 2 can be identical to one another, corresponding to one another or similar or different. Heat exchanger plates 2 which are identical to one another have the same properties with regard to the characteristic properties of the wave profile and the shape of the wave profile. Corresponding heat exchanger plates 2 are identical to one another in construction, but it is possible for the heat exchanger plates 2 to be different from one another, for example Have leg angles. Corresponding heat exchanger plates 2 preferably have a mutually different shape of the wave profile and / or values characterizing values different from one another, but are mutually corresponding with regard to the formation of the edge and the formation of the front and rear sides of the heat exchanger plates 2.
  • the alternating use of, for example, two mutually corresponding heat exchanger plates 2, which differ in the characteristic sizes only by different leg angles, has the advantage that the position and relative position of contact points of the heat exchanger plates 2 with one another in the profiled region with regard to the required rigidity and the required flow can be easily optimized.
  • the material of the heat exchanger plates 2 and the base plate 3 is aluminum in the present case.
  • This material has the advantage of having a low density and at the same time making it possible to generate the wave profile in a simple manner, for example by embossing.
  • soldering aids such as hard solder.
  • coating on both sides with soldering aid can also be provided.
  • the coating with soldering aids is intended, in particular in the area of the edges and the inflow and outflow lines in the block, to reliably establish a fluid-tight connection of two plates to one another in a joining process using a joining tool (brazing furnace) without using any further aids or auxiliary materials.
  • connection between the heat exchanger plates 2 and between the lowermost heat exchanger plate 2 and the base plate 3 is made in particular by brazing.
  • the heat exchanger plates 2 have a bent edge, the height of which is selected such that at least two adjacent heat exchanger plates 2 abut each other in this edge area and overlap.
  • the number of heat exchanger plates 2 overlapping in the edge area can be up to five.
  • Preferred further developments provide that the wave profile extends into the edge and in particular over its entire width.
  • Figures 6 and 7 show one corresponding to the third embodiment
  • the projecting area 8 also has a flat bottom.

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)

Abstract

L'invention concerne un échangeur de chaleur, notamment un radiateur d'huile à plaques empilées (1). Deux plaques d'échangeur de chaleur (2) adjacentes définissent un interstice qui est parcouru par un fluide échangeur de chaleur ou un deuxième fluide à refroidir ou à réchauffer. Une plaque de base (3), qui prend appui au moins sensiblement sur la surface de la plaque (2), adjacente, située le plus à l'extérieur, de l'échangeur de chaleur, est prévue sur une extrémité de ce dernier. Cette plaque de base (3) présente un évidement (5) dont le contour correspond à celui de la plaque d'échangeur de chaleur (2).
EP04803538A 2004-01-23 2004-12-06 Echangeur de chaleur, notamment radiateur d'huile/de liquide de refroidissement Ceased EP1711768A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004003790A DE102004003790A1 (de) 2004-01-23 2004-01-23 Wärmetauscher, insbesondere Öl-/Kühlmittel-Kühler
PCT/EP2004/013828 WO2005071342A1 (fr) 2004-01-23 2004-12-06 Echangeur de chaleur, notamment radiateur d'huile/de liquide de refroidissement

Publications (1)

Publication Number Publication Date
EP1711768A1 true EP1711768A1 (fr) 2006-10-18

Family

ID=34745107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803538A Ceased EP1711768A1 (fr) 2004-01-23 2004-12-06 Echangeur de chaleur, notamment radiateur d'huile/de liquide de refroidissement

Country Status (7)

Country Link
US (1) US20080257536A1 (fr)
EP (1) EP1711768A1 (fr)
JP (1) JP2007518958A (fr)
BR (1) BRPI0418440A (fr)
DE (1) DE102004003790A1 (fr)
MX (1) MXPA06008292A (fr)
WO (1) WO2005071342A1 (fr)

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JP5855611B2 (ja) * 2013-07-11 2016-02-09 アルファ ラヴァル コーポレイト アクチボラゲット プレート熱交換器
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JP6376836B2 (ja) * 2013-08-22 2018-08-22 株式会社マーレ フィルターシステムズ 熱交換器
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Also Published As

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US20080257536A1 (en) 2008-10-23
MXPA06008292A (es) 2007-01-26
BRPI0418440A (pt) 2007-05-22
JP2007518958A (ja) 2007-07-12
WO2005071342A1 (fr) 2005-08-04
DE102004003790A1 (de) 2005-08-11

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