EP1890102B1 - Plaque tubulaire voûtée pour un bac collecteur d'un échangeur thermique - Google Patents

Plaque tubulaire voûtée pour un bac collecteur d'un échangeur thermique Download PDF

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Publication number
EP1890102B1
EP1890102B1 EP20070012127 EP07012127A EP1890102B1 EP 1890102 B1 EP1890102 B1 EP 1890102B1 EP 20070012127 EP20070012127 EP 20070012127 EP 07012127 A EP07012127 A EP 07012127A EP 1890102 B1 EP1890102 B1 EP 1890102B1
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EP
European Patent Office
Prior art keywords
header plate
tubes
axis
plate according
curvature
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 - Fee Related
Application number
EP20070012127
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German (de)
English (en)
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EP1890102A1 (fr
Inventor
Klaus Kalbacher
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.)
Modine Manufacturing Co
Original Assignee
Modine Manufacturing Co
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
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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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • 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
    • F28F2225/08—Reinforcing means for header boxes

Definitions

  • the invention relates to a bottom part for a collecting box of a heat exchanger, e.g. a cooler, in particular oil cooler, with the other features in the preamble of claim 1.
  • a heat exchanger e.g. a cooler, in particular oil cooler
  • the bottom part also referred to as tube plate, for a collection box of this oil cooler consists of an at least partially flat flat part, which is designed approximately U-shaped in cross section.
  • a U-shaped in cross-section cover part is fastened such that it is received with its two-sided legs between side walls of the bottom part, wherein in this area a pressure-resistant connection between the bottom part and the lid part.
  • the bottom part contains openings for receiving Conssteckender pipes, which are in this case formed as flat tubes. In adaptation to the openings are approximately slit-shaped.
  • the flat part has at least one rounded region, namely in such a way that the flat central region merges on both sides via rounded side regions into the two side walls of the bottom part.
  • the slit-shaped openings for receiving and securing fashionsteckender flat tubes extending in the transverse direction over the central region.
  • the Tubes are juxtaposed to form spaces therebetween in which cooling fins are placed which enhance the heat exchange between the tubes and the medium to be cooled which flows through the tubes.
  • the tubes are pressure-tight in the openings of the bottom part, eg by soldering.
  • the collecting box is acted upon by a medium to be cooled, which flows through the tubes and can reach a second collecting box, the bottom part is pressurized, whereby the bottom part can deform such that it is bent in the direction of the tubes. Accordingly, the connections between the bottom part and the tubes are under heavy mechanical stress. These high mechanical loads can lead to damage, in particular leaks in the joints, and affect the life of such a designed heat exchanger.
  • a perforated plate for a tube heat exchanger DE 31 21 226 A1
  • the plate should generally have a curved or bulged or bent shape.
  • This is to be achieved in that, instead of such a perforated plate whose center region is approximately at the same height as the ends thereof, inclined surfaces adjoin the middle region on both sides, which project beyond the plane of the central region.
  • the middle region is connected via these inclined surfaces with U-shaped bent edges at its ends.
  • the middle area is essentially flat.
  • the perforated plate has a sag which progressively increases from its edges to the middle region. In this case, the plate on the side of the bundle of tubes, ie on the opposite side of the water tank, bent.
  • a heat exchanger with an approximately spherical collecting box in which the bottom part and the cover part of the collecting box are formed as part of a ball in order to better withstand the high internal pressure in the collecting box.
  • a heat exchanger with cylindrical tube header boxes known.
  • the cylinder tube has slots on the side facing the tubes, into which flat tubes are inserted. In each case between two slots with inserted flat tubes located surface area of the collection box tube is formed as a convex curved dome.
  • a collecting box which consists of lid and bottom part, the individual areas of the bottom part, which are located between slot openings for insertion of the tubes, designed as a convex curved to the tubes dome.
  • the invention has for its object to provide a bottom part for a header of a heat exchanger, e.g. for an oil cooler, which allows an increased strength of the flat part itself and also the connections between the flat part and pipes to be fastened thereto.
  • a heat exchanger e.g. for an oil cooler
  • a bottom part for a collecting box of a heat exchanger of the type mentioned according to the invention in that the flat part has a biaxially curved central part, which is about a longitudinal first axis and at the same time about a transverse, in particular approximately at right angles to the first Axis extending second axis is curved. It may be advantageous if the central part is curved in accordance with approximately a spherical cap.
  • curvature of the central part of a subsequent deformation of the flat part is already taken into account by pressure load; because the bottom part is connected to form a header box with a lid part and is the collection box with a medium under pressure Normally, a deformation of the flat part is to be expected under this medium pressure.
  • Such a deformation under pressure tends at least in sections to a ball. Due to the corresponding curved central part is already taken into account by Vorwegkrümmung. As a result, no deformation of the flat part or at least a considerably reduced deformation of the same result under pressure. As a result, the connections between the flat part and attached pipes are mechanically relieved considerably.
  • a bottom part 10 is shown, which is suitable for a collecting box of a heat exchanger 24, a part of which is schematically shown in FIG Fig. 4 is indicated.
  • the heat exchanger 24 is suitable, for example, for an internal combustion engine, in particular a motor vehicle. It can serve as a cooler, in particular, for example, as an oil cooler, or instead be integrated as a condenser or as an evaporator and, for example, in a refrigeration cycle.
  • the bottom part 10 consists of an at least partially flat flat part 11 with an in Fig. 1 to 3 upwardly facing side 12, on the flat part 11 a not further shown cover part, for example by soldering, welding od. Like. Can be fastened.
  • the flat portion 11 includes openings 13 which serve to receive therapeutically active devices 14, as is made Fig. 4 is apparent.
  • the flat part 11 has at least a rounded portion and is characterized in particular in that this flat part 11 has a curved central part 15, the biaxial, in particular corresponding to about a spherical cap, and thus z. B. spherical segment, curved.
  • the curved central part 15 is curved about a in the drawings only schematically indicated, longitudinally extending first axis 16 and at the same time about a transversely, in particular approximately at right angles, to the first axis 16 extending second axis 17.
  • the flat part 11 has in the embodiment shown approximately rectangular contour with an approximately parallel to the first axis 16 extending longitudinal side 18 and a transverse thereto, in particular approximately at right angles thereto, extending transverse side 19. Accordingly, the curved central portion 15 is approximately rectangular. Accordingly, an approximately parallel to the longitudinal side 18 of the flat part 11 extending longitudinal axis forms the first axis 16 and thereby the axis of curvature for the transverse curvature of the central part 15, as is apparent from Fig. 1 and in particular Fig. 3 you can see.
  • the radius of curvature for this transverse curvature is in Fig. 3 with r1, it being understood that the radius of curvature r1, relative to the other illustration in FIG Fig. 3 , not to scale.
  • Fig. 2 An approximately parallel to the transverse side 19 of the flat part 11 extending transverse axis forms the second axis 17 and is the axis of curvature for the longitudinal curvature of the central part 15.
  • the radius of curvature for this longitudinal curvature is in Fig. 2 schematically drawn with r2. It is understood that here too the size of the radius of curvature r2 in comparison to the representation of the flat part 11 is not to scale, since r2 in practice significantly larger than in the illustration according to FIG Fig. 2 is.
  • the radius of curvature r1 about the first axis 16 may be different from that of r2 about the second axis 17. Then results in the curved central portion 15 a deviating from a spherical portion biaxial curvature. Instead, the radius of curvature r1 about the first axis 16 may be the same as that r2 about the second axis. Then arises for the curvature of the central part 15 such as a spherical cap, d. H. a sphere section.
  • the transverse curvature of the curved central part 15 is approximately at the center of the longitudinal side 18 due to the longitudinal curvature largest, wherein the size of the curvature decreases from this center to both sides in the longitudinal direction.
  • the curved central part 15 is surrounded by a flat edge region 20 on the longitudinal side 18 and transverse side 19, which is not curved.
  • This flat edge region 20 has at least on one side, in particular on the side 12, approximately planar attachment surfaces 21, which serve for the attachment of a cover part thereto.
  • At least most of the openings 13 used to receive tubes 14 are contained in the curved central part 15.
  • the arrangement may be such that e.g. only the outermost edge 22 of the two longitudinally outermost openings 13, which is adjacent to the flat local edge region 20, has no transverse curvature about the first axis 16.
  • the arrangement can also be made such that only individual regions of the flat part 11 have a biaxial curvature and other regions only a uniaxial curvature, in particular transverse curvature.
  • Viewed in the longitudinal direction of the central part 15 can, for. B. at the beginning of a biaxial curved region are present, to which a uniaxially curved region, for. B. with transverse curvature, follows, then followed by a biaxially curved region.
  • the tubes 14 are formed as flat tubes.
  • the openings 13 are formed as a correspondingly adapted slots.
  • the slot profile of these openings 13 is directed transversely to the longitudinal side 18 and the first axis 16 of the curved central part 15.
  • At least some of these particular slot-shaped openings 13 are delimited by a passage 23, are created by the enlarged contact surfaces on the respective pipe 14 facing inside of the passage 23 and thus the strength and the guarantee of a tight connection between the flat part 11 and the individual tubes fourteenth is increased.
  • the passages 23 point towards the side 12 of the flat part 11, to which the cover part (not shown) is to be fastened. Thus, the passages 23 then protrude when the collecting box is formed toward its interior.
  • the passages 23 but also to the other, the side 12 opposite side point.
  • the passages 23 advantageously each have the same height, i. Instead, the passages 23, for example in the middle region of the central part 15, can also be higher than in the adjacent regions.
  • the height of the passages 23 may be e.g. starting from the middle on both sides in the longitudinal direction 18.
  • the flat part 11 represents an integral component and is formed, for example, of aluminum. The production takes place for example by injection molding or deep drawing.
  • the flat part 11 has a cross-sectional thickness of the order of about 0.8 to 6 mm.
  • the bottom part 10 is suitable for this and a cover part, not shown, which e.g. is placed on the mounting surfaces 21, a collecting box for a heat exchanger, e.g. for an oil cooler, to assemble.
  • the cover part not shown, on the flat, not curved edge portion 20 of the flat part 11, and in this case in particular on the flat mounting surfaces 21 of this, for. by welding, soldering od.
  • the cover part may also be formed of aluminum and preferably consists of a deep-drawn part.
  • Fig. 4 shows a portion of a heat exchanger 24 with at least one bottom part 10 to which a cover member, not shown, for attaching a header box is fastened, and with tubes 14 in the form of eg flat tubes, which are received in corresponding slit-shaped openings 13 in the bottom part 10 and pressure-tight by eg Soldering, welding od. Like. Are attached.
  • the fastening of the tubes 14 takes place at the openings 13 and the passages 23.
  • the bottom part 10 and / or the collector to be formed therefrom have the features described above. It can be seen that the tubes 14 despite the biaxial, z. B. approximately spherical segment, curved central portion 15 all have the same length.
  • tubes 14 protrude with their ends, which protrude beyond the flat portion 11 and are directed towards the interior of a collecting box to be formed on different levels over the bottom part 10 and protrude accordingly different far into the interior of a manner to be formed Collection box into it.
  • the tubes 14, which are located approximately in the region of the center of the central part 15, with their ends continue on the bottom part 10 than the remaining tubes 14, which connect in the longitudinal direction 18, starting from the center, on both sides. These adjoining on both sides of tubes 14 are end less than the bottom part 10 over than the tubes 14 in the region of the center.

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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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (26)

  1. Partie de fond d'un bac collecteur d'un échangeur de chaleur, constituée d'une partie plate (11) au moins en partie plane, sur laquelle peut être fixée une partie de couvercle et qui contient des ouvertures (13) pour recevoir des tubes (14) à insérer, la partie plate (11) présentant au moins une région arrondie,
    caractérisée en ce que
    la partie plate (11) présente une partie centrale (15) courbée suivant deux axes, qui est courbée autour d'un premier axe (16) s'étendant dans le sens de la longueur et en même temps également suivant un deuxième axe (17) s'étendant transversalement, notamment approximativement à angle droit par rapport au premier axe (16).
  2. Partie de fond selon la revendication 1,
    caractérisée en ce que
    la partie centrale (15) est courbée approximativement en forme de calotte sphérique.
  3. Partie de fond selon la revendication 1,
    caractérisée en ce que
    le rayon de courbure (r1) autour du premier axe (16) est différent du rayon de courbure (r2) autour du deuxième axe (17).
  4. Partie de fond selon la revendication 1,
    caractérisée en ce que
    le rayon de courbure (r1) autour du premier axe (16) est le même que le rayon de courbure (r2) autour du deuxième axe (17).
  5. Partie de fond selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que
    qu'au moins la plupart des ouvertures (13) pour recevoir les tubes (14) sont contenues dans la partie centrale courbe (15).
  6. Partie de fond selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce que
    la partie centrale courbée (15) est bordée par une région de bord plane (20) non courbée.
  7. Partie de fond selon la revendication 6,
    caractérisée en ce que
    la région de bord plane (20) présente au moins d'un côté (12) des surfaces de fixation (21) approximativement planes pour la fixation d'une partie de couvercle sur celle-ci, par exemple par brasage, soudage ou similaire.
  8. Partie de fond selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce que
    la partie plate (11) présente un contour approximativement rectangulaire.
  9. Partie de fond selon l'une quelconque des revendications 1 à 8,
    caractérisée en ce que
    la partie centrale (15) est approximativement rectangulaire.
  10. Partie de fond selon l'une quelconque des revendications 1 à 9,
    caractérisée en ce
    qu'un axe longitudinal s'étendant approximativement parallèlement à la direction longitudinale (18) de la partie plate (11) forme le premier axe (16) et l'axe de courbure pour la courbure transversale de la partie centrale (15).
  11. Partie de fond selon l'une quelconque des revendications 1 à 10,
    caractérisée en ce
    qu'un axe transversal s'étendant approximativement parallèlement à la direction transversale (19) de la partie plate (11) forme le deuxième axe (17) et l'axe de courbure pour la courbure longitudinale de la partie centrale (15).
  12. Partie de fond selon l'une quelconque des revendications 1 à 11,
    caractérisée en ce que
    la courbure transversale de la partie centrale courbée (15) présente approximativement dans la région du centre de la partie centrale (15) la plus grande courbure et en ce que la taille de la courbure diminue à partir du centre vers les deux côtés dans la direction longitudinale (18).
  13. Partie de fond selon l'une quelconque des revendications 1 à 12,
    caractérisée en ce que
    des régions individuelles de la partie plate (11) présentent une courbure suivant deux axes et/ou d'autres régions de celle-ci présentent une courbure suivant un axe.
  14. Partie de fond selon l'une quelconque des revendications 1 à 13,
    caractérisée en ce que
    les ouvertures (13) sont réalisées, de manière adaptée à des tubes plats (14) devant être reçus, sous forme de fentes adaptées en conséquence, et en ce que l'allure des fentes est orientée à chaque fois transversalement au premier axe (16) de la partie centrale (15).
  15. Partie de fond selon l'une quelconque des revendications 1 à 14,
    caractérisée en ce
    qu'au moins certaines ouvertures (13) pour recevoir les tubes (14) sont limitées par une traversée (23).
  16. Partie de fond selon la revendication 15,
    caractérisée en ce que
    les traversées (23) sont tournées vers le côté (12) de la partie plate (11) au niveau duquel peut être fixée la partie de couvercle, ou sont tournées vers le côté opposé.
  17. Partie de fond selon la revendication 15 ou 16,
    caractérisée en ce que
    la hauteur des traversées (23) est la même pour toutes les traversées (23).
  18. Partie de fond selon l'une quelconque des revendications 1 à 17,
    caractérisée en ce que
    la partie plate (11) est formée d'aluminium.
  19. Partie de fond selon l'une quelconque des revendications 1 à 18,
    caractérisée en ce que
    la partie plate (11) présente une épaisseur en section transversale de l'ordre de grandeur d'environ 0,8 à 6 mm.
  20. Bac collecteur pour un échangeur de chaleur, qui est constitué d'une partie de fond (10) et d'une partie de couvercle,
    caractérisé en ce que
    la partie de fond (10) présente les caractéristiques de l'une ou plusieurs des revendications précédentes.
  21. Bac collecteur selon la revendication 20,
    caractérisé en ce que
    la partie de couvercle est fixée par soudage, brasage ou similaire, de manière étanche à la pression, au niveau de la région de bord plane (20), non courbée, de la partie plate (11), en particulier au niveau des surfaces de fixation planes (21) de celle-ci.
  22. Bac collecteur selon la revendication 20 ou 21,
    caractérisé en ce que
    les traversées (23) font saillie vers l'intérieur du bac collecteur.
  23. Bac collecteur selon l'une quelconque des revendications 20 à 22,
    caractérisé en ce que
    la partie de couvercle est formée d'aluminium et se compose de préférence d'une partie emboutie.
  24. Echangeur de chaleur comprenant au moins un bac collecteur formé d'une partie de fond (10) et d'une partie de couvercle, et des tubes (14) qui sont reçus dans des ouvertures (13) dans la partie de fond (10) et qui sont fixés de manière étanche à la pression, la partie de fond (10) présentant les caractéristiques d'une ou plusieurs des revendications précédentes,
    caractérisé en ce que
    tous les tubes (14) présentent la même longueur et en ce que les tubes (14) reçus dans les ouvertures (13) dépassent avec leurs extrémités orientées vers l'intérieur du bac collecteur sur des distances différentes au-delà de la partie de fond (10) et pénètrent dans l'intérieur du bac collecteur, les tubes (14) se trouvant dans la région du centre de la partie centrale (15) dépassant avec leurs extrémités plus loin au-delà de la partie de fond (10) que les tubes (14) se raccordant aux deux côtés dans la direction longitudinale.
  25. Echangeur de chaleur selon la revendication 24,
    caractérisé en ce que
    les tubes (14) sont réalisés sous forme de tubes plats.
  26. Echangeur de chaleur selon la revendication 24,
    caractérisé en ce que
    les tubes (14) qui se suivent à partir du centre de la partie centrale (15) jusqu'aux deux côtés, dépassent avec leurs extrémités moins loin au-delà de la partie de fond (10) que les tubes (14) dans la région du centre.
EP20070012127 2006-08-09 2007-06-21 Plaque tubulaire voûtée pour un bac collecteur d'un échangeur thermique Expired - Fee Related EP1890102B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610037192 DE102006037192A1 (de) 2006-08-09 2006-08-09 Bodenteil für einen Sammelkasten eines Wärmeaustauschers

Publications (2)

Publication Number Publication Date
EP1890102A1 EP1890102A1 (fr) 2008-02-20
EP1890102B1 true EP1890102B1 (fr) 2013-04-03

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EP20070012127 Expired - Fee Related EP1890102B1 (fr) 2006-08-09 2007-06-21 Plaque tubulaire voûtée pour un bac collecteur d'un échangeur thermique

Country Status (3)

Country Link
EP (1) EP1890102B1 (fr)
DE (1) DE102006037192A1 (fr)
WO (1) WO2008021162A2 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN106461353A (zh) * 2013-12-13 2017-02-22 法雷奥热系统公司 收集箱和相应的热交换器

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DE102008011579A1 (de) * 2008-02-28 2009-09-03 Behr Gmbh & Co. Kg Bodenblech eines Sammelkastens für Kühlwasser und Wärmeübertrager für Kraftfahrzeuge
DE102012202886A1 (de) * 2012-02-24 2013-08-29 Behr Gmbh & Co. Kg Wärmeübertrager
DE102019209222A1 (de) * 2019-06-26 2020-12-31 Krones Ag Röhrenwärmetauscher

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106461353A (zh) * 2013-12-13 2017-02-22 法雷奥热系统公司 收集箱和相应的热交换器
CN106461353B (zh) * 2013-12-13 2022-05-03 法雷奥热系统公司 收集箱和相应的热交换器

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Publication number Publication date
DE102006037192A1 (de) 2008-02-14
WO2008021162A3 (fr) 2008-07-03
EP1890102A1 (fr) 2008-02-20
WO2008021162A2 (fr) 2008-02-21

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