EP1985955B1 - Echangeur thermique à plaques - Google Patents

Echangeur thermique à plaques Download PDF

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Publication number
EP1985955B1
EP1985955B1 EP20080006783 EP08006783A EP1985955B1 EP 1985955 B1 EP1985955 B1 EP 1985955B1 EP 20080006783 EP20080006783 EP 20080006783 EP 08006783 A EP08006783 A EP 08006783A EP 1985955 B1 EP1985955 B1 EP 1985955B1
Authority
EP
European Patent Office
Prior art keywords
plate
heat exchanger
holding
screw
fixing sleeve
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.)
Active
Application number
EP20080006783
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German (de)
English (en)
Other versions
EP1985955A2 (fr
EP1985955A3 (fr
Inventor
Inge Möller
Jens Türk
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.)
MAN Truck and Bus SE
Original Assignee
MAN Truck and Bus SE
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
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Publication of EP1985955A2 publication Critical patent/EP1985955A2/fr
Publication of EP1985955A3 publication Critical patent/EP1985955A3/fr
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Publication of EP1985955B1 publication Critical patent/EP1985955B1/fr
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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
    • 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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements
    • F28F2275/205—Fastening; Joining with threaded elements with of tie-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/06—Adapter frames, e.g. for mounting heat exchanger cores on other structure and for allowing fluidic connections

Definitions

  • the invention relates to a plate heat exchanger according to the preamble of claim 1.
  • a plate heat exchanger is off US 5,544,703 known.
  • Plate heat exchangers often consist of arranged in the form of a plate stack heat exchanger plates having a profiling.
  • the profiles are designed so that each two adjacent plates forming a flow gap with the interposition of a circumferential seal.
  • the flow gaps according to their sequence in the plate stack changing, fed via corresponding inlet openings and outlet openings either with a heat-emitting or with a heat-absorbing medium.
  • In order to seal the plate stack this is usually limited on one side by a parallel to the heat exchanger plates arranged carrier plate and on its other side by a likewise to the heat exchanger plates arranged parallel pressing plate, wherein the carrier plate and the pressure plate by means of a clamping arrangement acting on them mounted and pressure-tight are braced.
  • Plate heat exchangers of this type are for example from the DE 31 41 161 C2 , of the DE 695 03 587 T2 or even the DE 103 93 221 T5 known.
  • the carrier plate and the pressure plate must be made solid as in the arrangements according to DE 31 41 161 C2 and the DE 695 03 587 T2 the case is, otherwise it can lead to leaks due to deformation.
  • Such arrangements have a high weight and are difficult to handle without tools and especially in tight spaces.
  • US 5,544,703 teaches a plate heat exchanger whose plates are stacked and are each provided at the ends with a press plate and the press plates by threaded rods and corresponding nuts brace the two press plates against each other.
  • DE 40 17 662 A1 describes a heat exchanger for a marinized internal combustion engine wherein a plate pack of a plurality of juxtaposed heat exchanger plates are held by contracting tie rods between a top plate and a clamping plate. The ends of the threaded rods protrude after assembly and are tightened with hexagon nuts.
  • US 3,610,311 teaches a heat exchanger consisting of hollow disks, whereby a helical flow channel is provided in the individual hollow disks.
  • Each hollow disc consists of two plates, which are groove-like deformed and results in connecting the plates to a hollow disc of the spiral flow channel, wherein the channel-forming elevations of a plate come to rest in the wells belonging to the adjacent hollow disc plate.
  • the carrier plate fixed to the frame on a higher-level functional unit z.
  • a simple and thus advantageous embodiment of the retaining arrangement provides that this consists of a fixing sleeve on the one hand and a fixing screw on the other hand, wherein the fixing sleeve at one end has a the outer diameter of the fixing sleeve superior attachment and at its other end has an internal thread, while the fixing screw at one end with a screw head forming an abutment and at the other end End is equipped with an external thread.
  • these have mutually aligned through holes, through which fixing sleeve and fixing screw are screwed together, the system engage the fixing sleeve and the system on the fixing screw on the holding plates, so that the plate stack with a first force F1 is compressed.
  • the force F1 is advantageously dimensioned so that it is sufficient to ensure a liquid-tight cohesion of the plate stack.
  • the first force F1 can advantageously be limited by the fact that, when the fixing screw is screwed into the fixing sleeve, the end of the fixing sleeve facing the fixing screw bears against a limiting shoulder on the screw head of the fixing screw.
  • the fixation screw has a through hole coaxial to the screw axis and is dimensioned in its length such that, when screwed together with the fixing sleeve forms its end a circulating in the fixing sleeve shoulder-shaped system.
  • the holding arrangement is penetrated by a fastening bolt, wherein the fastening bolt has an external thread at one end, which is screwed with a threaded hole in the support plate and has on its shaft a peripheral collar, over which through the end the fixing screw formed shoulder-shaped attachment the holding arrangement and determines the plate stack when screwing the mounting bolt into the threaded hole on the support plate on this.
  • a likewise particularly advantageous embodiment of the arrangement according to the invention can be achieved if the at least one clamping arrangement passes through the at least one holding arrangement coaxially.
  • a clamping arrangement which comprises a shaft part and a head part operatively connected thereto, the shaft part having an external thread which can be screwed to a threaded hole in the carrier plate and the head part has an abutment shoulder which acts on a through-bore of the pressing plate, such that when tightening the clamping arrangement, the pressure plate is pulled over the contact shoulder with a second force F2 against the support plate.
  • the second force is greater than the first force F1, so that the plate stack is compressible beyond the predetermined by the holding arrangement amount in the direction of the support plate.
  • the clamping arrangement can be made both in one piece, as well as consist of two or more parts. If it is in two parts, it advantageously has a head part and a shaft part, wherein the head part and the shaft part are operatively connected via a screw connection.
  • a circumferential collar is provided on the shaft portion of the clamping arrangement described above, which cooperates with the end of the fixing screw, such that with the screwing of the shaft portion in the support plate, the holding arrangement and fixed on this of her fixed plate stack on the support plate. In this way, the space required for the holding arrangement, the mounting arrangement and the clamping arrangement can be reduced to a minimum.
  • the shaft part at its end facing the head part on an internal thread which cooperates with an external thread on the head part, such that the screwed into the support plate shaft part acts as a tie rod, so that by screwing the head part into the shaft part in a simple and thus advantageous manner, the second force F2 is applied to the press plate.
  • Plate heat exchangers are described in detail from their basic structure and function in the above-mentioned prior art, it is therefore omitted to a presentation of these aspects and referenced instead of the cited references. The following statements therefore relate to the development of such heat exchangers in the sense of the task.
  • FIG. 1 shows a plate heat exchanger in partial view.
  • a plate stack 1 consisting of heat exchanger plates 2 has in each case before the first heat exchanger plate 2 'and after the last heat exchanger plate 2 "each a holding plate 3, 3' which delimit the plate stack 1.
  • Both in the holding plates 3, 3 'and in the heat exchanger plates 2 through holes are provided, which are aligned with each other and are penetrated by a holding arrangement 4.
  • the holding assembly 4 passing through the plate stack consists of a fixing sleeve 6 and a fixing screw 7.
  • the fixing sleeve 6 has at its one end an outer diameter superior unit 8 and has at its other end an internal thread 9.
  • the Fixing screw 7 is provided at its one end with a system 11 forming a screw head 10 and at its other end with an external thread 12, wherein the internal thread 9 of the fixing sleeve 6 and the external thread 12 of the fixing screw 7 are in operative connection.
  • the system 8 engages the fixing sleeve on the side facing away from the plate stack 1 side of the holding plate 3 and the system 11 on the head 10 of the fixing screw 7 on the side facing away from the plate stack 1 side of the holding plate 3'an, so that they compress the holding plates and over these the heat exchanger plates with a first force F1, as in Fig. 2 is shown.
  • the force F1 with which the arrangement of plate stack 1 and holding plates 3, 3 'is compressed, is dimensioned such that it is sufficient to ensure a liquid-tight cohesion of the plate stack 1.
  • the first force F1 is limited by the fact that, with the fixing screw 7 screwed into the fixing sleeve 6, the end of the fixing sleeve 6 facing the fixing screw 7 rests against a limiting shoulder 13 on the screw head 10 of the fixing screw 7.
  • FIG. B. To dune divers like those to the FIGS. 1 and 2 described involved in a parent institution, z. B. to arrange it on an internal combustion engine, it is necessary to attach the plate stack to a support plate, which in turn at the z. B. internal combustion engine is arranged fixed to the frame or forms a structural unit with this.
  • a separate fastening device would inevitably require additional space in terms of the available surface for the heat exchanger function, to avoid this is in the example after Fig. 3 shown a way to structurally summarize the holding assembly with the mounting assembly for securing the plate stack to a support plate, to the fixing screw 7 coaxial with the screw axis has a through hole 14 (FIG. Fig.
  • a fastening bolt 17 is provided, which passes through the holding assembly 4 and at one end has an external thread 18.
  • a clamping arrangement independent of the holding arrangement 4 is used when the stack of plates is mounted on the carrier plate or mounted.
  • a clamping arrangement separate from the holding arrangement or, as shown in FIG Fig. 4 is shown to integrate the clamping arrangement in the holding arrangement in order to minimize the space requirement.
  • FIG. 4 provides further that the clamping arrangement also takes over the function of the mounting arrangement, to the arrangement is as to FIG. 3 described, it is therefore made to these parts of description.
  • the fastening bolt 17 forms the shaft part of a clamping arrangement; which comprises, in addition to the fastening bolt 17, a head part operatively connected thereto.
  • the head part may be one-piece or multi-part, in the example selected it is multi-part and consists of a screw 21 which cooperates with an internal thread 23 in the fastening bolt 17 and a contact plate 22 which acts between the screw 21 and a pressure plate 24, wherein the pressure plate 24th rests against the holding plate 3.
  • the clamping device can also be in one piece, then the fastening bolt 17, the screw 21 and the bearing plate 22 are designed as one component.
  • the system 8 is formed on the fixing sleeve 6 as a circumferential collar and the contact disk 22 is provided on its side facing the fixing sleeve with a boundary surface 26, so that when screwing the screw 21 in the fastening bolt 17, the minimum distance between the boundary surface 26 on the contact plate 22 and the support plate 16 is limited to the length of the support assembly 4. It can be so reliably avoided that too high pressing forces to deformation on the heat exchanger plates and thus assembly-related leaks.

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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 (12)

  1. Échangeur de chaleur à plaques constitué de plaques d'échange de chaleur disposées en forme d'empilement de plaques, présentant un profilage,
    - à chaque fois deux plaques adjacentes constituant une fente d'écoulement avec interposition d'un joint d'étanchéité périphérique,
    - les fentes d'écoulement, en fonction de leur succession dans l'empilement de plaques, pouvant être alimentées, en alternance, par des ouvertures d'entrée et des ouvertures de sortie correspondantes, et pouvant être traversées soit par un milieu diffusant de la chaleur, soit par un milieu absorbant de la chaleur,
    - le milieu diffusant de la chaleur et/ou le milieu absorbant de la chaleur présentant une pression plus élevée que la pression de l'atmosphère,
    - l'empilement de plaques, sur l'un de ses côtés, étant limité par une plaque porteuse disposée parallèlement aux plaques d'échange de chaleur et, sur son autre côté, étant limité par une plaque de pression également disposée parallèlement aux plaques d'échange de chaleur,
    - l'empilement de plaques pouvant être monté à l'aide de la plaque porteuse et de la plaque de pression au moyen d'au moins un agencement de serrage agissant sur celles-ci et pouvant être serré de manière étanche à la pression,
    - entre l'empilement de plaques (1) et la plaque porteuse (16) étant disposée une première plaque de retenue (3') et entre l'empilement de plaques (1) et la plaque de pression (24) étant disposée une deuxième plaque de retenue (3),
    caractérisé en ce que
    la plaque porteuse (16) peut être disposée de manière fixée au châssis sur une unité fonctionnelle d'ordre supérieur et entre la première plaque de retenue (3') et la deuxième plaque de retenue (3) agit au moins un agencement de retenue (4) indépendant de l'au moins un agencement de serrage, de telle sorte que l'agencement de retenue (4) retienne l'empilement de plaques (1) de manière étanche aux liquides lorsque l'agencement de serrage n'est pas actif.
  2. Échangeur de chaleur à plaques selon la revendication 1, caractérisé en ce que l'agencement de retenue (4) se compose d'une douille de fixation (6) d'une part et d'une vis de fixation (7) d'autre part,
    - la douille de fixation (6) présentant, à l'une de ses extrémités, une butée (8) dépassant le diamètre extérieur de la douille de fixation et, à son autre extrémité, un filetage interne (9),
    - la vis de fixation (7) présentant, à l'une de ses extrémités, une tête de vis (10) constituant une butée (11) et, à son autre extrémité, un filetage externe (12),
    - le filetage interne (9) de la douille de fixation (6) et le filetage externe (12) de la vis de fixation (7) pouvant être amenés en prise,
    - les plaques de retenue (3, 3') et les plaques d'échange de chaleur (2, 2', 2") présentant des trous de passage qui, lorsque l'empilement de plaques (1) est assemblé, sont à chaque fois alignés les uns avec les autres et étanchéifiés vis-à-vis des fentes d'écoulement,
    - la douille de fixation (6) traversant l'une des plaques de retenue (3) et au moins une partie de l'empilement de plaques (1) et la vis de fixation (7) traversant l'autre plaque de retenue (3') et également au moins une partie de l'empilement de plaques (1) et la douille de fixation (6) pouvant être vissée à la vis de fixation (7) et l'empilement de plaques (1) pouvant ainsi être fixé de telle sorte qu'au moyen de la butée (8) sur la douille de fixation (6) et de la butée (11) sur la vis de fixation (7) l'empilement de plaques (1) puisse être comprimé avec une première force (F1) par le biais des plaques de retenue s'appliquant contre celui-ci (3, 3').
  3. Échangeur de chaleur à plaques selon la revendication 2, caractérisé en ce que la première force (F1) est limitée à une valeur prédéfinie par le fait que lorsque la vis de fixation (7) est vissée dans la douille de fixation (6), l'extrémité de la douille de fixation (6) tournée vers la vis de fixation (7) s'applique contre un épaulement de limitation (13) sur la tête de vis (10) de la vis de fixation (7).
  4. Échangeur de chaleur à plaques selon la revendication 2 ou 3, caractérisé en ce que la vis de fixation (7) présente un alésage traversant (14) coaxialement à l'axe de la vis et sa longueur est choisie de telle sorte que lors du vissage avec la douille de fixation (6), elle forme avec son extrémité une butée (15) en forme d'épaulement périphérique dans la douille de fixation (6), en ce que l'agencement de retenue (4) formé de la douille de fixation (6) et de la vis de fixation (7) est traversé par un boulon de fixation (17), le boulon de fixation (17) possédant, à l'une de ses extrémités, un filetage externe (18) qui peut être vissé à un trou fileté (19) dans la plaque porteuse (16) et en ce qu'une bride périphérique (20) est prévue sur le boulon de fixation (17), laquelle, par le biais de la butée (15) en forme d'épaulement formée par l'extrémité de la vis de fixation (7), fixe l'agencement de retenue (4) et par le biais de celui-ci l'empilement de plaques (1) lors du vissage du boulon de fixation (17) dans le trou fileté (19) sur la plaque porteuse (16).
  5. Échangeur de chaleur à plaques selon l'une quelconque des revendications 2 à 4, caractérisé en ce que l'au moins un agencement de serrage traverse coaxialement l'au moins un agencement de retenue (4) et comporte une partie de tige et une partie de tête connectée fonctionnellement à celle-ci, la partie de tige possédant un filetage externe (18) qui peut être vissé avec un trou fileté (19) dans la plaque porteuse (16) et la partie de tête présentant un épaulement de butée (25) qui vient en prise au niveau d'un alésage traversant de la plaque de pression (24) de telle sorte que lors du serrage de l'agencement de serrage, la plaque de pression (24) soit tirée par le biais de l'épaulement de butée (25) avec une deuxième force (F2) contre la plaque porteuse (16), la deuxième force (F2) étant supérieure à la première force (F1) et l'empilement de plaques (1) pouvant être comprimé au-delà de la mesure prédéfinie par l'agencement de retenue (4) dans la direction de la plaque porteuse (16).
  6. Échangeur de chaleur à plaques selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agencement de serrage est réalisé d'une seule pièce.
  7. Échangeur de chaleur à plaques selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'agencement de serrage se compose d'au moins deux parties, la partie de tête et la partie de tige, et la partie de tête et la partie de tige sont connectées fonctionnellement par le biais d'une connexion vissée.
  8. Échangeur de chaleur à plaques selon l'une quelconque des revendications 5 à 7, caractérisé en ce que la partie de tige présente une bride périphérique (20) qui coopère avec l'extrémité de la vis de fixation (7) de telle sorte que l'agencement de retenue (4), et par le biais de celui-ci l'empilement de plaques (1) fixé à celui-ci, soit fixé à la plaque porteuse (16) par vissage de la partie de tige dans la plaque porteuse (16).
  9. Échangeur de chaleur à plaques selon l'une quelconque des revendications 5, 7 à 9, caractérisé en ce que la partie de tige présente à son extrémité tournée vers la partie de tête un filetage interne (23) qui coopère avec un filetage externe au niveau de la partie de tête de telle sorte que la partie de tige vissée dans la plaque porteuse (16) agisse en tant que tirant d'ancrage et, par vissage de la partie de tête dans la partie de tige, la deuxième force (F2) est appliquée sur la plaque de pression (24).
  10. Échangeur de chaleur à plaques selon l'une quelconque des revendications 5, 7 à 10, caractérisé en ce que la partie de tête se compose d'une vis (21) et d'une rondelle de butée (22), la vis (21) agissant sur la rondelle de butée (22) et celle-ci agissant sur la plaque de pression (24) lors du vissage dans la partie de tige.
  11. Échangeur de chaleur à plaques selon la revendication 10, caractérisé en ce que la butée (8) au niveau de la douille de fixation (6) est réalisée sous forme de collet périphérique et la rondelle de butée (22) au niveau de son côté tourné vers la douille de fixation (6) présente une surface de limitation (26) qui, lors du vissage de la vis (21) dans la partie de tige, limite le mouvement de la rondelle de butée (22) dans la direction de la plaque porteuse (16).
  12. Échangeur de chaleur à plaques selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité fonctionnelle d'ordre supérieur est un moteur à combustion interne.
EP20080006783 2007-04-28 2008-04-03 Echangeur thermique à plaques Active EP1985955B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710020187 DE102007020187A1 (de) 2007-04-28 2007-04-28 Plattenwärmetauscher

Publications (3)

Publication Number Publication Date
EP1985955A2 EP1985955A2 (fr) 2008-10-29
EP1985955A3 EP1985955A3 (fr) 2012-11-07
EP1985955B1 true EP1985955B1 (fr) 2014-03-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080006783 Active EP1985955B1 (fr) 2007-04-28 2008-04-03 Echangeur thermique à plaques

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DE (1) DE102007020187A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2474804A1 (fr) * 2011-01-10 2012-07-11 Alfa Laval Corporate AB Échangeur thermique à plaque
EP2589916A1 (fr) * 2011-11-04 2013-05-08 Alfa Laval Corporate AB Echangeur thermique à plaques
DE102012203620A1 (de) * 2012-03-07 2013-09-12 Mahle International Gmbh Plattenwärmetauscher

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1913226B1 (de) * 1969-03-15 1970-08-27 Krupp Gmbh Aus Hohlscheiben bestehender Waermeaustauscher
DE3141161C2 (de) 1981-10-16 1984-04-26 W. Schmidt GmbH & Co KG, 7518 Bretten Plattenwärmeaustauscher
DE4017662A1 (de) * 1990-06-01 1991-12-05 Schwarting Marine Motore Gmbh Waermeaustauscher fuer einen marinisierten verbrennungsmotor
FR2705445B1 (fr) * 1993-05-18 1995-07-07 Vicarb Sa Echangeur de chaleur à plaques.
SE502779C2 (sv) 1994-05-18 1996-01-08 Tetra Laval Holdings & Finance Svetsad plattvärmeväxlare och förfarande för svetsning av värmeöverföringsplattor till en plattvärmeväxlare
SE522500C2 (sv) 2002-09-17 2004-02-10 Valeo Engine Cooling Ab Anordning vid en plattvärmeväxlare

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Publication number Publication date
EP1985955A2 (fr) 2008-10-29
DE102007020187A1 (de) 2008-10-30
EP1985955A3 (fr) 2012-11-07

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