EP2513587B1 - Wärmetauscherplatte insbesondere für den kondensator einer klimaanlage - Google Patents

Wärmetauscherplatte insbesondere für den kondensator einer klimaanlage Download PDF

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Publication number
EP2513587B1
EP2513587B1 EP10790424.5A EP10790424A EP2513587B1 EP 2513587 B1 EP2513587 B1 EP 2513587B1 EP 10790424 A EP10790424 A EP 10790424A EP 2513587 B1 EP2513587 B1 EP 2513587B1
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EP
European Patent Office
Prior art keywords
plate
heat exchanger
passageways
longitudinal axis
plates
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.)
Not-in-force
Application number
EP10790424.5A
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English (en)
French (fr)
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EP2513587A1 (de
Inventor
Laurent Moreau
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 Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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.)
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Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2513587A1 publication Critical patent/EP2513587A1/de
Application granted granted Critical
Publication of EP2513587B1 publication Critical patent/EP2513587B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28D9/0037—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 conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • 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
    • F28D2021/0084—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means

Definitions

  • the invention relates to heat exchangers, in particular for motor vehicles.
  • It relates more particularly to a heat exchanger plate for the production of a heat exchanger comprising a stack of such plates to form between them first channels for the circulation of a first fluid which alternate with second channels for the circulation of a second fluid.
  • An exchanger plate comprising the features of the preamble of claim 1 is disclosed in document WO 2007/036963 .
  • These plate heat exchangers have different applications, particularly in the field of motor vehicles where they are used, for example, as oil coolers or as air conditioning condensers.
  • a cooling fluid is cooled by a cooling fluid which is generally the vehicle engine cooling fluid, that is to say water with antifreeze.
  • a cooling fluid which is generally the vehicle engine cooling fluid, that is to say water with antifreeze.
  • Heat exchanger plates are already known which comprise a generally rectangular bottom provided with four fluid passage openings, respectively arranged in four corner regions, and provided with chevron corrugations extending from one side to the other. another of a median longitudinal axis of the plate.
  • the corrugations of the plate are intended to intersect with the corrugations of an identical adjacent plate in a superimposed relationship where the two plates are rotated 180 ° mutually, forming point contact areas for their mutual brazing.
  • each plate is deformed locally around the fluid passage openings to allow opening or closing the passage section to the fluid concerned, that is to say either the first fluid or the second fluid. This then makes it possible to perform an alternating circulation of the two fluids.
  • Plate heat exchangers have the main disadvantage of having a low mechanical strength because they offer a large surface subjected to the pressure of the fluid, and this without mechanical reinforcement. Indeed, these plates are soldered to each other at their peripheral edge, around the passage openings and at the point contact areas at the intersection of herringbone corrugations.
  • the current plates do not provide sufficient mechanical reinforcement in the corner regions where are located respectively the four passage openings.
  • the main purpose of the invention is to overcome this disadvantage.
  • the bottom of the plate has, in the peripheral regions, in particular corner for the rectangular plates, and / or near the passage openings, additional reliefs suitable for defining additional point contact zones for the brazing, which improves the pressure resistance of the heat exchanger.
  • a first corrugation close to two openings passing through a first end of the plate and a second corrugation close to two openings passing through a second end of the plate each have a continuous portion and a discontinuous portion in a branch of the chevron between the median longitudinal axis and a large side of the plate, the discontinuous portion forming the additional reliefs.
  • each branch of the chevron comprises a continuous portion and a discontinuous portion forming additional reliefs.
  • this discontinuous portion may comprise an aligned series of recesses and bumps arranged alternately.
  • the additional reliefs may further comprise end reliefs respectively located at both ends of the plate between two fluid passage openings and each extending symmetrically on either side of the median longitudinal axis.
  • One embodiment of the invention relates to a heat exchanger comprising a multiplicity of plates as defined above, in which the plates are identical to one another and mutually stacked by being turned in pairs by 180 °, forming contact zones. punctures for brazing.
  • This heat exchanger can in particular be made in the form of a condenser for cooling a cooling fluid with a cooling fluid.
  • the plate 10 comprises a bottom 12 of generally rectangular shape bounded by two long sides 14 and two small sides 16 joined together by rounded 18.
  • the bottom 12 is generally flat and surrounded by a raised peripheral edge allowing a mutual interlocking and an assembly waterproof plates, as taught, for example, by the publication FR 2,795,165 .
  • the bottom 12 is provided with four fluid passage openings 22 arranged respectively in four corner regions, that is to say near the rounded ends 18.
  • the bottom 12 is provided with corrugations 22 in the form of chevrons which extend on either side of a median longitudinal axis XX. These corrugations are formed by an alternating succession of ribs and longitudinal grooves forming V-shaped reliefs each of which has its apex on the axis XX and its branches arranged symmetrically on either side of the latter.
  • the openings 22 are each surrounded by annular borders 24 intended to provide brazing areas around the openings.
  • Two of the annular borders 24 are in the plane of the bottom 12 and the other two are in an offset plane as shown by hatched areas. In the example, the latter are arranged diagonally, but they could be arranged differently, for example along a long side.
  • Such plates are advantageously obtained by cutting and stamping a metal foil, typically based on aluminum, coated with a solder plating.
  • a plate heat exchanger can be formed by a stack of plates 10, the plates being mutually rotated 180 °, which allows the same type of plates to be used for the entire heat exchanger.
  • the plates When the plates are thus stacked, their respective peripheral edges mutually interlock to form the periphery seal. Furthermore, the annular edges 24 of a plate bear against an adjacent plate on the bottom of the latter.
  • the chevron corrugations 26 of a plate are crossed with the homologous corrugations of an identical adjacent plate, thus forming point contact zones for their mutual brazing.
  • flow channels for a first fluid which alternate with flow channels for a second fluid, are defined, the passage openings 22 respectively defining an inlet duct and an outlet duct for a first fluid, and an inlet conduit and an outlet conduit for a second fluid.
  • the chevron corrugations 26 have in the example an opening angle greater than 90 °, typically 120 °.
  • Each of these corrugations comprises two symmetrical branches on either side of the axis XX, each branch extending from this axis XX to the vicinity of a long side 14. Note that some of these undulations are interrupted for to define the annular borders 24 which respectively surround the openings 22.
  • two rectilinear bosses 28 are provided at the ends of the plate, that is to say respectively close to the narrow sides 16, between the passage openings 22.
  • a network of point contact zones is formed by crossing the chevron corrugations. However, there are regions where no contact zone is defined. For this purpose, four Z 1 contact zones formed near the corner regions and the annular edges 24 are distinguished. Indeed, the corrugations of a plate, for example of an upper plate, are found opposite each other. of the hollow generated by this undulation, which decreases the line of brazed points by one ripple pitch, thereby decreasing the mechanical strength of the plate.
  • each boss 28 above generates a brazing point that stiffens this area. But, since the same plate must be used, this brazing point must be off-center with respect to the small sides 16 of the plate to come to braze. This off-centering generates a large area without soldering point, alternately on the left side and on the right side, which decreases the mechanical strength of the plate.
  • Zones Z 1 and Z 2 are also identified on the figure 2 which represents another plate of the prior art. It is first noted that there are no contact points in both Z 1 areas and Z 2 zones.
  • the figure 3 represents a plate identical to that of the figure 1 in a position rotated 180 ° and can therefore be superimposed on the plate of the figure 1 .
  • Zones Z 1 and Z 2 are also identified.
  • the cup of the figure 4 shows how, in a zone Z 1 , the undulations 26 of a top plate 10 are found opposite the hollow generated by this undulation, thus without contact with the bottom 12 of a lower plate, which decreases by a ripple not the line of brazed points, as mentioned before.
  • Figures 5 and 6 show respectively the brazing zones created by the bosses 28. As explained above, because of the decentering of the bosses with respect to the small sides 16 of the plate, this results in a large area without brazing points, alternately on the left side and the side law.
  • FIG 7 schematically shows the chevron corrugations 26 and the boss 28 of a plate 10 of the prior art, all shown in fine lines. It is also represented in thick line a portion of the corrugations 26 of an identical plate placed above and 180 ° rotated position. It can be seen that there are lost solder points P identified by small black circles. In the example, there are three points P near each of the openings 22 on the left side and also three points P near each of the openings 22 on the right side.
  • the invention overcomes such disadvantages.
  • figure 8 shows schematically a plate 10 according to the invention which has a structure generally similar to that of a plate 10 of the prior art as described previously.
  • the common elements of a plate according to the invention and a plate according to the prior art will therefore be designated by the same numerical references to avoid repetitions.
  • corrugations 26 1 and 26 2 chevron generally extend each between the two long sides 14 of the plate.
  • the corrugation 26 1 is composed of two branches each of which comprises a continuous portion 30 1 and a discontinuous portion 32 1 .
  • the continuous portion 30 1 extends from the longitudinal axis XX, while its continuous portion 32 1 extends in the extension of the continuous portion and to a large side 14 of the plate.
  • the second corrugation 26 2 comprises, in each of these branches, a continuous portion 30 2 and a discontinuous portion 32 2 . These two portions are in the extension of one another and each extend between the longitudinal axis XX and a large side 14 of the plate.
  • the discontinuous portion 32 2 extends from the median longitudinal axis XX, whereas the continuous portion 2 extends in the extension of the discontinuous portion and towards a big side of the plate.
  • the discontinuous portions 32 1 and 32 2 each comprise an aligned series of recesses and bumps arranged alternately.
  • the continuous and discontinuous portions of the same branch have substantially the same length.
  • the aforementioned hollows and bumps are schematically represented by broken lines.
  • the undulations and other reliefs of the plate of the figure 8 are represented in fine lines, while a portion of the undulations and reliefs of the upper plate are represented in solid lines.
  • FIG 9 is a detailed representation of a plate 10 of the invention made in accordance with the figure 8 .
  • the common elements are designated by the same references.
  • the figure 10 show the soldering zones obtained with a plate according to the figure 8 or the figure 9 .
  • the figure 11 shows how to create additional soldering points while reducing their distance to the plate head, which increases its mechanical strength in these end regions.
  • the figure 11 shows, by comparison with the figure 4 of the prior art, now how the corrugations 26 of the top plate engage the additional shaped areas 32 1 and 32 2 formed by the aforementioned staple portions.
  • the plate of the invention comprises other additional reliefs, namely two end bosses 34 located respectively at the two ends of the plate (towards the narrow sides 16) and between two openings 22.
  • These two reliefs 34 each extend symmetrically on either side of the axis of symmetry and have a double wave shape which is similar to that of a W. These two reliefs 34 have the same orientation here.
  • curved bosses are used which make it possible to maximize the number of contact points on each side of the plate while minimizing the surface subjected to the pressure without reinforcement.
  • the plate of the invention finds application in plate heat exchangers, in which identical plates are used.
  • the plates are turned in pairs by 180 ° to allow delimiting alternate flow channels for a first fluid and a second fluid.
  • the invention finds general application to plate heat exchangers, especially for motor vehicles.
  • the heat exchanger is a motor vehicle condenser used to cool a refrigerant, for example a refrigerant fluoro fluid, with a cooling fluid, such as the vehicle engine coolant. automobile.
  • a refrigerant for example a refrigerant fluoro fluid
  • a cooling fluid such as the vehicle engine coolant. automobile.

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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)

Claims (8)

  1. Wärmetauscherplatte, die einen Boden (12) enthält, der mit vier Fluiddurchgangsöffnungen (22) versehen und mit Zickzack-Welligkeiten (26) ausgestattet ist, wobei die Welligkeiten der Platte dazu bestimmt sind, sich mit den Welligkeiten einer gleichen benachbarten Platte in einer übereinander liegenden Beziehung zu kreuzen, in der die zwei Platten um 180° gedreht sind, indem sie punktförmige Kontaktzonen für ihr gegenseitiges Löten bilden, wobei der Boden (12) der Platte (10) in Umfangsbereichen und/oder in der Nähe der Durchgangsöffnungen (22) zusätzliche Reliefs (321, 322; 34) aufweist, die geeignet sind, zusätzliche punktförmige Kontaktzonen für das Löten zu definieren, was es ermöglicht, die Druckfestigkeit des Wärmetauschers zu verbessern, wobei der Boden (12) der Platte eine allgemeine Rechteckform hat, wobei die Öffnungen in vier Eckbereichen angeordnet sind und die Welligkeiten sich zu beiden Seiten einer mittleren Längsachse (XX) der Platte erstrecken, wobei die Eckbereiche mit zusätzlichen Reliefs versehen sind, dadurch gekennzeichnet, dass eine erste Welligkeit (261) nahe zwei Durchgangsöffnungen (22) an einem ersten Ende der Platte und eine zweite Welligkeit (262) nahe zwei Durchgangsöffnungen (22) an einem zweiten Ende der Platte je einen durchgehenden Abschnitt (301, 302) und einen unterbrochenen Abschnitt (321, 322) in einem Zweig des Zickzacks haben, der zwischen der mittleren Längsachse (XX) und einer großen Seite der Platte (14) liegt, wobei der unterbrochene Abschnitt die zusätzlichen Reliefs formt.
  2. Platte nach Anspruch 1, dadurch gekennzeichnet, dass in jedem Zweig der ersten Welligkeit (261) der durchgehende Abschnitt (301) sich ausgehend von der mittleren Längsachse (XX) erstreckt, während der unterbrochene Abschnitt (321) sich in der Verlängerung des durchgehenden Abschnitts und zu einer großen Seite (14) der Platte hin erstreckt.
  3. Platte nach Anspruch 1 und 2, dadurch gekennzeichnet, dass in jedem Zweig der zweiten Welligkeit (262) der unterbrochene Abschnitt (322) sich ausgehend von der mittleren Längsachse (XX) erstreckt, während der durchgehende Abschnitt (302) sich in der Verlängerung des unterbrochenen Abschnitts und zu einer großen Seite (14) der Platte hin erstreckt.
  4. Platte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jeder unterbrochene Abschnitt (321, 322) eine fluchtend ausgerichtete Reihe von Vertiefungen und Erhöhungen enthält, die abwechselnd angeordnet sind.
  5. Platte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die zusätzlichen Reliefs zwei Endreliefs (34) enthalten, die sich an den zwei Enden der Platte zwischen zwei Fluiddurchgangsöffnungen (22) befinden und sich je symmetrisch zu beiden Seiten der mittleren Längsachse (XX) erstrecken.
  6. Platte nach Anspruch 5, dadurch gekennzeichnet, dass jedes Endrelief (34) im Wesentlichen die Form einer W-förmigen Doppelwelle hat.
  7. Wärmetauscher, der eine Vielzahl von Platten (10) nach einem der Ansprüche 1 bis 6 enthält, wobei die Platten untereinander gleich und übereinander geschichtet sind, indem sie paarweise um 180° gedreht sind, indem sie punktförmige Kontaktzonen für das Löten formen.
  8. Wärmetauscher nach Anspruch 7, der in Form eines Kondensators zum Kühlen eines Kühlfluids durch ein Kühlungsfluid hergestellt ist.
EP10790424.5A 2009-12-17 2010-12-09 Wärmetauscherplatte insbesondere für den kondensator einer klimaanlage Not-in-force EP2513587B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0906118A FR2954480B1 (fr) 2009-12-17 2009-12-17 Plaque d'echangeur de chaleur, en particulier pour un condenseur de climatisation
PCT/EP2010/069304 WO2011073083A1 (fr) 2009-12-17 2010-12-09 Plaque d'echangeur de chaleur, en particulier pour un condenseur de climatisation

Publications (2)

Publication Number Publication Date
EP2513587A1 EP2513587A1 (de) 2012-10-24
EP2513587B1 true EP2513587B1 (de) 2017-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10790424.5A Not-in-force EP2513587B1 (de) 2009-12-17 2010-12-09 Wärmetauscherplatte insbesondere für den kondensator einer klimaanlage

Country Status (4)

Country Link
EP (1) EP2513587B1 (de)
CN (1) CN102770734B (de)
FR (1) FR2954480B1 (de)
WO (1) WO2011073083A1 (de)

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EP3047224B1 (de) * 2013-09-17 2020-10-28 SWEP International AB Plattenwärmetauscher mit verstärkungsmittel
EP3077753B1 (de) * 2013-12-05 2017-11-08 SWEP International AB Wärmetauscherplatte mit veränderlicher neigung
US10837717B2 (en) * 2013-12-10 2020-11-17 Swep International Ab Heat exchanger with improved flow
EP3093602B1 (de) 2015-05-11 2020-04-15 Alfa Laval Corporate AB Wärmetauscherplatte und plattenwärmetauscher
WO2017122428A1 (ja) * 2016-01-13 2017-07-20 株式会社日阪製作所 プレート式熱交換器
JP6645579B2 (ja) * 2016-06-07 2020-02-14 株式会社デンソー 積層型熱交換器
CN108662939A (zh) * 2018-06-07 2018-10-16 上海加冷松芝汽车空调股份有限公司 一种波纹板及换热器
SE544426C2 (en) * 2019-04-03 2022-05-24 Alfa Laval Corp Ab A heat exchanger plate, and a plate heat exchanger
SE544387C2 (en) * 2019-12-23 2022-05-03 Swep Int Ab A heat exchanger with indentations for avoiding stagnant media

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Also Published As

Publication number Publication date
CN102770734A (zh) 2012-11-07
FR2954480A1 (fr) 2011-06-24
CN102770734B (zh) 2014-08-13
EP2513587A1 (de) 2012-10-24
WO2011073083A1 (fr) 2011-06-23
FR2954480B1 (fr) 2012-12-07

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