EP2618089B1 - Échangeur de chaleur et procédé de fabrication d'un échangeur de chaleur - Google Patents

Échangeur de chaleur et procédé de fabrication d'un échangeur de chaleur Download PDF

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Publication number
EP2618089B1
EP2618089B1 EP13000056.5A EP13000056A EP2618089B1 EP 2618089 B1 EP2618089 B1 EP 2618089B1 EP 13000056 A EP13000056 A EP 13000056A EP 2618089 B1 EP2618089 B1 EP 2618089B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
flange
plate
plates
flanges
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
EP13000056.5A
Other languages
German (de)
English (en)
Other versions
EP2618089A3 (fr
EP2618089A2 (fr
Inventor
Lars Persson
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of EP2618089A2 publication Critical patent/EP2618089A2/fr
Publication of EP2618089A3 publication Critical patent/EP2618089A3/fr
Application granted granted Critical
Publication of EP2618089B1 publication Critical patent/EP2618089B1/fr
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
    • 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
    • F28F3/044—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 pontual, e.g. dimples
    • 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
    • F28F2225/04—Reinforcing means for conduits

Definitions

  • the invention relates to a heat exchanger comprising a stack of a plurality of pairs of heat exchanger plates formed of sheet metal having a three-dimensional structured pattern, a first flow path being defined within the plurality of pairs and a second flow path being defined between said pairs, each plate having at least one through-opening.
  • the invention relates as well to a method for producing a heat exchanger forming a stack of heat exchanger plates made of sheet metal having a three-dimensional structured pattern.
  • a heat exchanger of the kind mentioned above is known from US 2007/0261829 A1 .
  • the heat exchanger plates of this heat exchanger have a three-dimensional structured pattern comprising bulges and hollows.
  • the bulges and hollows are placed against respective hollows and bulges of an adjacent heat exchanger plate to form the flow path on the primary and on the secondary side of the heat exchanger.
  • heat exchanger plates comprising a kind of herringbone pattern can be used.
  • a heat exchanger is used to transfer heat from a fluid on the primary side, i.e. a fluid flowing through the first flow path, to a fluid on the secondary side, i.e. to a fluid passing through the second flow path.
  • a fluid on the primary side i.e. a fluid flowing through the first flow path
  • a fluid on the secondary side i.e. to a fluid passing through the second flow path.
  • at least one of these fluids has an elevated pressure.
  • the connection between two neighbouring plates must be strong enough to withstand this pressure. This is usually no problem in an area where there are enough bulges and hollows. However, in some areas of the plates an additional connection is necessary.
  • the task underlying the invention is to have a solid connection between adjacent heat exchanger plates.
  • the flanges are integral with the plate. They can easily be formed just by pressing the sheet metal in the area of the auxiliary opening into the flange. This pressing can be made simultaneously with the forming of the three-dimensional structured pattern.
  • sheet metal covers all materials having a good thermal conductivity and can be formed in a press or die. It is also possible to use plastic material as sheet metal.
  • the flange of an auxiliary opening of one plate is connected to the flange of an auxiliary opening of a neighbouring plate.
  • This connection can be made by welding or brazing.
  • the flanges of a plurality of auxiliary openings form a cylinder and a stabilisation element is inserted into said cylinder.
  • the stabilisation element prevents that a pressure acting between two adjacent plates compresses the flanges radially which could lead to a weakening of the connection between two neighbouring plates.
  • At least the outermost flanges are connected to said stabilisation element.
  • all flanges can be connected to said stabilisation element as well.
  • the stabilisation element can withstand higher tensile forces so that the stack of plates can withstand higher pressures inside the stack of plates.
  • At least one auxiliary opening is positioned in the vicinity of said through-opening. In the vicinity of said through-opening there is normally no sufficient connection between two neighbouring plates.
  • the flange of the auxiliary opening serves for a connection between two adjacent or neighbouring plates.
  • a transition zone between said flange and said plate is rounded and the flange of a plate contacts the flange of a neighbouring plate beyond the transition zone.
  • a connection between two adjacent flanges is made where the flanges have already a cylindrical form. This makes the connection simple.
  • the two flanges are parallel to each other so that a reliable connection can be achieved.
  • the two flanges can be parallel to each other.
  • an endplate having a bulge adapted to receive flanges of at least a heat exchanger plate next to said endplate.
  • a bulge which is adapted to receive the flange of at least a heat exchanger plate next to said endplate.
  • the heat exchanger plate next to the endplate can have the same shape as all the other heat exchanger plates of the heat exchanger.
  • the bulge is adapted to receive the flange not only of the heat exchanger plate next to said endplate but also the flange of at least the second heat exchanger plate counted from the endplate.
  • said bulge has a depth, said depth being larger than a height of said flange perpendicular to said heat exchanger plate next to said endplate.
  • the tongues can remain in their upright state, i.e. it is not necessary to deform the flange.
  • the flange or flanges can be connected to the wall of the bulge.
  • a flange of a heat exchanger plate next to an endplate is, at least at it's tip, deformed parallel to said endplate. These flange is deformed at least twice comprising a first section almost perpendicular to the plane of the heat exchanger plate and further comprising a second section parallel to the plane of the endplate.
  • the flanges of at least two heat exchanger plates next to said endplate form, at least at their tips, a layered structure on an internal surface of said endplate. This layered structure can easily be connected to said endplate.
  • a heat exchanger plate of the kind mentioned above has an auxiliary opening is provided having a raised edge forming an upstanding flange.
  • this flange is made integral with the heat exchanger plate. It can easily be formed by pressing the sheet metal out of the area of the auxiliary opening to form a raised edge of the auxiliary opening.
  • This raised edge forms a flange which can be used to connect two adjacent heat exchanger plates to each other.
  • a transition zone between said flange and said plate is rounded.
  • a rounded transition zone prevents weakening of the sheet metal in the area around the auxiliary opening.
  • a task is solved by a method for producing a heat exchanger as mentioned above in that a plurality of auxiliary openings having raised edges are formed in each of said plates and surrounding a through-opening, said raised edge forming a flange, said flange being inserted in a corresponding auxiliary opening of a neighbouring plate.
  • the flanges can withstand shere forces between neighbouring or adjacent plates. They produce an increased stability of the stack of plates.
  • said flanges are connected to each other.
  • the flanges are used to prevent that neighbouring plates increase their distance when there is an elevated pressure between the true plates.
  • the flanges are subjected to tensile forces.
  • the flanges are made integral with the heat exchanger plate they are stable enough to withstand these tensile forces generated by the pressure between two plates.
  • a stabilisation element is inserted through a plurality of auxiliary openings.
  • This stabilisation element supports the flanges from the inside so that the elevated pressure cannot compress the flanges in radial direction (related to the auxiliary opening). Such a radial compression could weaken the connection between flanges of adjacent plates.
  • said stabilisation element is connected at least to the flanges of the outermost plates of the stack of heat exchanger plates.
  • this pressure cannot "blow up" the stack of heat exchanger plates since the outermost plates are held together by means of the stabilisation element.
  • all flanges are connected to the stabilisation element so that even inside the stack of heat exchanger plates the blowing up due to an elevated pressure can be prevented.
  • Fig. 1 shows a heat exchanger plate 1a as it is shown in US 2007/0261829 A1 .
  • This plate 1a comprises bulges 2 which are raised by a given height over the plane of the heat exchanger plate 1a.
  • the heat exchanger plate 1a comprises hollows 3 which are sunk to a given depth in this heat exchanger plate 1a.
  • the bulges 2 are symbolized by white circles while the hollows 3 are symbolized by circles with a cross.
  • two such heat exchanger plates la form a pair of plates, in which one heat exchanger plate 1a is rotated about 180° about its longer edge 4.
  • a plurality of such pairs is stacked one above the other.
  • a first flow path is formed within the pairs and a second flow path is formed between these pairs.
  • the heat exchanger plate 1a comprises four through-openings 5-8. These through-openings 5-8 are used to form channels or connections. For example, the through-openings 5, 7 forms a supply and a return for the first flow path and the through-openings 6, 8 form a supply and a return for the second fluid path.
  • the heat exchanger plate 1a is formed of a sheet metal.
  • sheet metal defines a material having a good thermal conductivity.
  • the material can be formed in a press or die.
  • the bulges 2 and the hollows 3 form a three-dimensional structured profile. This profile is produced in a press or die.
  • opening areas 5-8 it is common, both in heat exchangers of the kind as disclosed in US2007/ 0261829 or the more common herringbone pattern plate heat exchangers, to encircle the openings 5-8 with bulges and hollows to be welded together, the density of these being limited by the openings 5-8 themselves and their sizes of being limited in that there needs to be fluid access into the spaces between the plates. Therefore it is a problem these areas often are the area of the highest pressures within the heat exchanger.
  • auxiliary openings 9 is provided and circling the through-opening 5. Similar auxiliary openings 9 can be provided around the other through-openings 6-8.
  • the auxiliary openings 9 can be formed in the same press or die which is used to form the bulges 2 and hollows 3.
  • the auxiliary opening 9 has a raised edge 10 forming a flange 11, i.e. a wall surrounding the auxiliary opening 9.
  • This flange 11 can be made of the sheet metal which in the past had to be removed in order to form the auxiliary opening.
  • the flange 11 stands almost upright with respect to the plane 12 of the heat exchanger plate 1a.
  • Fig. 4 shows the situation coming out, when several plates 1a, 1b, 1c are stacked.
  • the flange 11 of heat exchanger plate 1a is inserted into the auxiliary opening 9 of the next or adjacent heat exchanger plate 1b contacting the flange 13 of the corresponding auxiliary opening 9 of heat exchanger plate 1b.
  • the flange 13 of heat exchanger plate 1b is inserted into auxiliary opening 9 of heat exchanger plate 1c contacting the corresponding flange 14 of its neighbouring heat exchanger plate 1c.
  • the flanges 11, 13, 14 can be welded together forming a sort of "cylinder" reaching through the auxiliary openings.
  • a bolt 15 (or another stabilisation element) is inserted into the cylinder and may optionally be fixed in the cylinder. In some cases it is sufficient that the bolt 15 is connected to the flanges 11, 14 of the outermost heat exchanger plates 1a, 1c. In most cases, however, it is preferred that the bolt 15 is connected to all flanges 11, 13, 14.
  • a transition zone between the flange 11, 13, 14 and the plates 1a, 1b, 1c is rounded and the flange 11, 13 of a plate 1a, 1b contacts the flange 13, 14 of a neighbouring or adjacent plate 1b, 1c beyond the transition zone. This has the effect that the flanges contact each other in a cylindrical area.
  • Similar auxiliary openings may be distributed over the heat exchanger plate to enhance strength.
  • the auxiliary openings 9 can be formed in the same tool as the bulges 2 and hollows 3. However, it is clear that the auxiliary openings 9 together with the flanges 11, 13, 14 can be formed in a separate tool.
  • the pattern is formed by bulges 2 and hollows 3.
  • other forms of pattern can be used, e.g. a herringbone pattern.
  • Fig. 5 shows a first solution to this problem, where the bottom plate 18 has a bulge 19 adapted to receive the flange 10 of a heat exchanger plate 1d next to the endplate 18. It can be seen that the bulge 19 has a depth which is larger than a hight of the flange 10 perpendicular to the plane of the heat exchanger plate 1d next to the endplate 18. In this case it is possible that the flange 10 is fully inserted into the bulge 19 without a necessity for deforming the flange 10.
  • the bulge 19 not only receives the flange 10 of the heat exchanger plate 1d next to the endplate 18, but also the flange of the second heat exchanger plate le counted from the endplate 18.
  • the flanges of these two heat exchanger plates 1d, le can be connected to the internal wall of the bulge 19. However, it is possible to insert even more flanges into the bulge 19, i.e. the flanges of more heat exchanger plates 1d, 1e ....
  • FIG. 7 Another possibility is shown in Fig. 7.
  • an endplate 20 is used having a plane internal surface 21.
  • the tongues 10 of the heat exchanger plates 1d, le next to the endplate 20 are further bent forming sections 22 running parallel to the internal surface 21 of said endplate 20. These tongues form a layered structure on the internal surface 21 of said endplate 20.

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)

Claims (14)

  1. Echangeur de chaleur comprenant un empilement d'une pluralité de paires de plaques d'échangeur de chaleur (1a, 1b, 1c) formées de tôle métallique présentant un motif structuré à trois dimensions, un premier chemin d'écoulement étant défini à l'intérieur de la pluralité de paires et un second chemin d'écoulement étant défini entre lesdites paires, chaque plaque comportant au moins une ouverture de traversée (5 - 8), caractérisé en ce qu'il est prévu une pluralité d'ouvertures auxiliaires (9) qui encerclent une ouverture de traversée (5, 6, 7, 8) dans ladite plaque (1a, 1b, 1c), chaque ouverture auxiliaire (9) présentant un bord surélevé (10) qui forme une ailette (11, 13, 14), ladite ailette (11, 13, 14) étant insérée dans une ouverture auxiliaire correspondante (9) d'une plaque voisine (1b, 1c).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que l'ailette (11, 13) d'une ouverture auxiliaire (9) d'une plaque (1a, 1b) est connectée à l'ailette (13, 14) d'une ouverture auxiliaire (9) d'une plaque voisine (1b, 1c).
  3. Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce que les ailettes (11, 13, 14) d'une pluralité d'ouvertures auxiliaires (9) forment un cylindre et un élément de stabilisation (15) est inséré dans ledit cylindre.
  4. Echangeur de chaleur selon la revendication 3, caractérisé en ce qu'au moins les ailettes les plus extérieures (11, 14) sont connectées audit élément de stabilisation (15).
  5. Echangeur de chaleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'au moins une ouverture auxiliaire (9) est positionnée au voisinage de ladite ouverture de traversée (5 - 8).
  6. Echangeur de chaleur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'une zone de transition entre ladite ailette (11, 13, 14) et ladite plaque (1a, 1b, 1c) est arrondie et l'ailette (11, 13) d'une plaque (1a, 1b) touche l'ailette (13, 14) d'une plaque voisine (1b, 1c) au-delà de la zone de transition.
  7. Echangeur de chaleur selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il est prévu une plaque d'extrémité (18) présentant un renflement (19) apte à recevoir une ailette (10) d'au moins une plaque d'échangeur de chaleur (1d) proche de ladite plaque d'extrémité (18).
  8. Echangeur de chaleur selon la revendication 7, caractérisé en ce que ledit renflement (19) présente une profondeur, ladite profondeur étant plus grande qu'une hauteur desdites ailettes (10) perpendiculaires à ladite plaque d'échangeur de chaleur (1d) proche de ladite plaque d'extrémité (18).
  9. Echangeur de chaleur selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'une ailette (10) d'une plaque d'échangeur de chaleur (1d) proche d'une plaque d'extrémité (20) est, au moins à sa pointe, déformée parallèlement à ladite plaque d'extrémité (20).
  10. Echangeur de chaleur selon la revendication 9, caractérisé en ce que l'ailette (10) d'au moins deux plaques d'échangeur de chaleur (1d, le) proches de ladite plaque d'extrémité (20) forment, au moins à leurs pointes, une structure stratifiée sur une surface interne (21) de ladite plaque d'extrémité (20).
  11. Procédé de fabrication d'un échangeur de chaleur formant un empilement de plaques d'échangeur de chaleur (1a, 1b, 1c) constituées de tôle métallique présentant un motif structuré à trois dimensions (2, 3), un premier chemin d'écoulement étant défini à l'intérieur de ladite pluralité de paires et un second chemin d'écoulement étant défini entre lesdites paires, chaque plaque comportant au moins une ouverture de traversée (5 - 8), caractérisé en ce que l'on forme une pluralité d'ouvertures auxiliaires (9) présentant des bords surélevés (10) dans chacune desdites plaques et encerclant une ouverture de traversée (5, 6, 7, 8), ledit bord surélevé formant une ailette, ladite ailette étant insérée dans une ouverture auxiliaire correspondante (9) d'une plaque voisine (1b).
  12. Procédé selon la revendication 11, caractérisé en ce que lesdites ailettes (11, 13, 14) sont connectées les unes aux autres.
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que l'on insère un élément de stabilisation (15) à travers une pluralité d'ouvertures auxiliaires (9).
  14. Procédé selon la revendication 13, caractérisé en ce que ledit élément de stabilisation (15) est connecté au moins aux ailettes (11, 13) des plaques les plus extérieures (1a, 1c) de l'empilement de plaques d'échangeur de chaleur.
EP13000056.5A 2012-01-23 2013-01-08 Échangeur de chaleur et procédé de fabrication d'un échangeur de chaleur Not-in-force EP2618089B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA201200066 2012-01-23

Publications (3)

Publication Number Publication Date
EP2618089A2 EP2618089A2 (fr) 2013-07-24
EP2618089A3 EP2618089A3 (fr) 2014-07-09
EP2618089B1 true EP2618089B1 (fr) 2018-12-19

Family

ID=47665851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13000056.5A Not-in-force EP2618089B1 (fr) 2012-01-23 2013-01-08 Échangeur de chaleur et procédé de fabrication d'un échangeur de chaleur

Country Status (4)

Country Link
EP (1) EP2618089B1 (fr)
CN (1) CN103217032B (fr)
DK (1) DK2618089T3 (fr)
RU (1) RU2527776C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3015809B1 (fr) * 2014-10-31 2019-07-31 Danfoss A/S Échangeur thermique de plaque
DK179183B1 (en) * 2017-03-01 2018-01-15 Danfoss As Dividing plate between Heat plates

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1313973A (en) * 1971-05-07 1973-04-18 Hutogepgyar Tubular heat exchanger and a method for the production thereof
FR2426879B1 (fr) * 1978-05-26 1985-08-09 Bedue Abel Structure d'echangeur de chaleur entre deux fluides
SU1740946A1 (ru) * 1989-05-11 1992-06-15 Специальное Конструкторско-Технологическое Бюро По Автоматизации, Микропроцессорной И Турбохолодильной Техники Пластинчато-трубный теплообменник
DE19722074A1 (de) * 1997-05-27 1998-12-03 Knecht Filterwerke Gmbh Plattenwärmetauscher, insbesondere Öl/Kühlmittel-Kühler für Kraftfahrzeuge
RU2137076C1 (ru) * 1997-09-19 1999-09-10 Общество с ограниченной ответственностью "Контэкс" Пластинчато-трубный теплообменник
DE19750748C2 (de) * 1997-11-14 2003-04-24 Behr Gmbh & Co Plattenwärmetauscher
RU2199067C1 (ru) * 2001-06-08 2003-02-20 Антониади Валерий Георгиевич Трубчато-пластинчатый теплообменник и способ его изготовления
SE524176C2 (sv) * 2002-11-01 2004-07-06 Ep Technology Ab Värmeväxlare med förstärkningsorgan
SE528629C2 (sv) * 2004-09-08 2007-01-09 Ep Technology Ab Rillmönster för värmeväxlare
CN200989226Y (zh) * 2006-10-24 2007-12-12 浙江银轮机械股份有限公司 无紊流翅片的热交换器
WO2009112031A2 (fr) * 2008-03-13 2009-09-17 Danfoss A/S Échangeur de chaleur à double plaque
US9310136B2 (en) * 2008-12-17 2016-04-12 Swep International Ab Port opening of heat exchanger

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP2618089A3 (fr) 2014-07-09
EP2618089A2 (fr) 2013-07-24
RU2527776C1 (ru) 2014-09-10
DK2618089T3 (en) 2019-03-18
RU2013102012A (ru) 2014-07-27
CN103217032B (zh) 2015-12-02
CN103217032A (zh) 2013-07-24

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