EP1152204B1 - Echangeur de chaleur à plaques - Google Patents

Echangeur de chaleur à plaques Download PDF

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Publication number
EP1152204B1
EP1152204B1 EP01107118A EP01107118A EP1152204B1 EP 1152204 B1 EP1152204 B1 EP 1152204B1 EP 01107118 A EP01107118 A EP 01107118A EP 01107118 A EP01107118 A EP 01107118A EP 1152204 B1 EP1152204 B1 EP 1152204B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plate
ducts
guide
flow
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 - Lifetime
Application number
EP01107118A
Other languages
German (de)
English (en)
Other versions
EP1152204A2 (fr
EP1152204A3 (fr
Inventor
Reinhard Wehrmann
Klaus Feldmann
Ralf Beck
Jens Nies
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
Publication date
Application filed by Modine Manufacturing Co filed Critical Modine Manufacturing Co
Publication of EP1152204A2 publication Critical patent/EP1152204A2/fr
Publication of EP1152204A3 publication Critical patent/EP1152204A3/fr
Application granted granted Critical
Publication of EP1152204B1 publication Critical patent/EP1152204B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids

Definitions

  • the invention relates to a plate heat exchanger described in the preamble of claim 1 Art.
  • a plate heat exchanger is known, for example, from EP 819 907 B1.
  • nubs or similar protrusions have been embossed in the heat exchanger plates forming the horizontal channels for the heating or cooling medium.
  • the nubs of adjacent heat exchanger plates touch and are soldered together to increase the strength of the plate heat exchanger.
  • Such knobs have generally proven themselves and are therefore very often provided because they cause practically no noticeable pressure loss.
  • a plate heat exchanger corresponding to the preamble is disclosed in US Pat. No. 4,653,581.
  • the inner insert is formed over its entire surface like a corrugated rib.
  • the corrugated fin does not offer the desired high pressure stability, because the connecting surfaces between the corrugated fin and the heat exchanger plates are too small.
  • an improved durability is achieved, but only between the mentioned plates and the adjacent heat exchanger plates.
  • a similar problem situation can be found in DE 197 11 258 A1, in which a reinforcing plate with a board was inserted between the base plate and the lowermost heat exchanger plate.
  • the stresses also acting inside the plate heat exchanger can not be met with the teachings of these two publications.
  • corresponding inner inserts laamellae
  • the object of the invention is to improve the durability of the plate heat exchanger inside without substantially increasing the pressure loss of the medium flowing through the channels.
  • the inner insert is an additional plate having guide channels with at least one inlet and one outlet leading from one flow channel of one medium to the other flow channel of the same medium, to which most of the guide channels have a curvature, the Guide channels free portions of the additional plate with the one adjacent heat exchanger plate and the guide channels are metallically connected to the other adjacent heat exchanger plate of the same channel.
  • the plate heat exchanger according to the invention leads to the following advantages.
  • the provided with at least one inlet and an outlet guide channels and the alignment of the plurality of guide channels from one flow channel to the other cause a very low pressure drop, the height, depending on the operating conditions, is quite comparable, with the nubs described in the prior art.
  • the durability against thermal shocks and extreme thermal cycling and mechanical stresses has been significantly improved because the additional plate on both sides, that is, with both heat exchanger plates, is connected.
  • the bonding surfaces are much larger than in the prior art, which is crucial for durability, such as solder joints.
  • the plurality of guide channels should be directed from a flow channel of one medium to the other flow channel of the same medium. This means that the general orientation of the majority of the guide channels from one flow channel to the other flow channel should be carried out as described, wherein the guide channels, in particular in rectangular plate heat exchangers with arranged in the corners flow channels, may well be arcuate, so not straight from one to another Flow channel must run.
  • the additional plates of the plate heat exchanger according to the invention can be located in all its channels.
  • the additional plate has four openings which coincide in position with the flow channels forming openings in the heat exchanger plates.
  • the two channels connected in the auxiliary plate by means of the guide channels are larger than the corresponding openings in the heat exchanger plates and provided with a shape adapted to the arrangement of the guide channels. It has been determined by extensive experiments that this measure has a significant part in that the pressure loss could be further reduced.
  • the shape of the mentioned openings and the arrangement of the guide channels should be adapted to each other. In a preferred embodiment, these openings have a different shape from the circular shape. In particular, the openings are provided with bulges in the direction of the inlets or outlets of selected guide channels.
  • the other two openings in the auxiliary plate which are intended for another medium and which are not connected by means of guide channels, may be identical in shape to the openings in the heat exchanger plates.
  • branches In particular in the vicinity of the branches, fluidic advantages, for example a more uniform distribution of the flow or the heat exchange, are achieved in that additional inlet and outlet openings are arranged in the guide channels.
  • the branches may be located between the edge of the heat exchanger plate and the flow channels.
  • the corner portions of the heat exchanger are intensively involved in heat exchange in substantially rectangular heat exchanger plates, whereby the performance thereof is improved.
  • Investigations by the applicant show a very homogeneous distribution of heat exchange over all areas of the heat exchanger plates and the additional plates.
  • Claim 8 describes an advantageous arrangement of the guide channels, which consists in that some Guiding channels formed continuously from one flow channel to the other flow channel and other guide channels are much shorter, with their exit and entry away from the flow channels is arranged.
  • Claim 9 represents an advantageous additional measure and stipulates that the additional plate nubs or the like should have projections which have the same height as the guide channels and which are connected to the adjacent heat exchanger plate.
  • the pimples are near the Flow channels or not so closely occupied with guide channels surfaces of the additional plate arranged and therefore additionally support these areas.
  • the additional plate according to the invention can be much thinner than the heat exchanger plates and thus be carried out material - and weight saving.
  • the thickness of the Heat exchanger plates 0, 5 mm and the additional plates only 0, 3 mm.
  • the non-deformed area in the additional plate 6 around the openings 33 and 35 was reinforced by the knobs 14 .
  • the design of the guide channels 8 can be seen, which are formed like a sickle.
  • the guide channels 8 are connected to the one heat exchanger plate 2 of the channel 5 , while the interposed portions 11 are metallically connected to the other heat exchanger plate 2 .
  • the bent edge 13 of the heat exchanger plates 2 has not been drawn. However, this is clearly visible in Figures 4 and 5 described below. In Fig. 4 , the edge 13 of the heat exchanger plates 2, seen in the installed position of the plate heat exchanger 1 , directed upward and in Fig. 5 down.
  • Fig. 4 shows a cross section through the plate heat exchanger 1 with a total of four separate circuits.
  • the flow channel 4 for the cooling or heating medium K is located in Fig. 4 on the left side.
  • the flow channel 4 for oil 1, oil 2 and oil 3 can be seen.
  • the flow channels 4 have connecting flanges 3.
  • the connecting flange 3 for oil 1 has a connecting channel, not shown, so that the oil 1 enter through this connecting channel and in the upper channels 5 with the coolant K in the heat exchange. All channels 5 for oil 1; Oil 2 and oil 3 have conventional fins 53.
  • the oil 2 also enters the flange 3 in the plate heat exchanger 1 through the pipe section 50 with a flange which has been firmly soldered between two heat exchanger plates 2 .
  • the oil 3, however, is supplied to or removed from the underside of the plate heat exchanger 1 .
  • In the flow channel 4 is a partition plate 51 to keep oil 2 separated from oil 3 . Further information can be found in EP 819 907 B1.
  • FIG. 1 In the embodiment of FIG.

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 (9)

  1. Echangeur de chaleur à plaques (1) pour des agents échangeant de la chaleur dans des circuits séparés, comprenant des plaques d'échangeur de chaleur (2) individuelles, empilées les unes dans les autres et reliées de façon métallique, présentant des ouvertures (15 - 18), qui forment un paquet, lequel est transpercé verticalement par des canaux d'écoulement (4) formés au moyen des ouvertures (15 - 18) pour l'arrivée et la sortie de l'agent de chauffage ou de refroidissement (K) et par des canaux d'écoulement (4) pour le/les autre(s) agent(s), qui sont séparés les uns des autres et à partir desquels l'agent de chauffage ou de refroidissement (K) et le/les autre(s) agent(s) se propagent dans des canaux (5) formés chacun par deux plaques d'échangeur de chaleur (2), dont au moins quelques-uns présentent un insert intérieur (6), l'insert intérieur (6) étant une plaque supplémentaire qui présente des canaux de guidage (8) avec au moins une entrée et une sortie (9 ; 10), caractérisé en ce que les canaux de guidage vont d'un canal d'écoulement (4) d'un agent à l'autre canal d'écoulement (4) du même agent, la plupart des canaux de guidage (8) présentant une courbure,
    moyennant quoi la plaque supplémentaire (6) présente des tronçons (11) exempts de canaux de guidage (8), et les tronçons (11) libres sont reliés de façon métallique à une plaque d'échangeur de chaleur (2) limitrophe et les canaux de guidage (8) à l'autre plaque d'échangeur de chaleur (2) limitrophe du même canal (5).
  2. Echangeur de chaleur à plaques selon la revendication 1, caractérisé en ce que la plaque supplémentaire (6) présente quatre ouvertures (32 à 35), qui correspondent en ce qui concerne leur position avec les ouvertures (15 à 18) formant les canaux d'écoulement (4) dans les plaques d'échangeur de chaleur (2).
  3. Echangeur de chaleur à plaques selon les revendications 1 et 2, caractérisé en ce que les deux ouvertures (32 ; 34) reliées au moyen des canaux de guidage (8) dans la plaque supplémentaire (6) présentent une forme adaptée à la disposition des canaux de guidage (8), les ouvertures (32 ; 34) présentant des courbures (40) en direction de l'entrée ou de la sortie (9 ; 10) des canaux de guidage (8).
  4. Echangeur de chaleur à plaques selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la plaque supplémentaire (6) se trouve dans au moins un des canaux (5) pour l'agent de chauffage ou de refroidissement (K).
  5. Echangeur de chaleur à plaques selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, dans le cas d'échangeurs de chaleur à plaques (1) et pour plus de deux agents, au moins les canaux (5) pour l'agent de chauffage ou de refroidissement, qui sont contigus sur un côté à un canal (5) d'un agent et sur l'autre côté à un canal (5) de l'autre agent ou se trouvent à proximité de ces canaux (tronçons a, b, c), sont équipés d'une plaque supplémentaire (6).
  6. Echangeur de chaleur à plaques selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les canaux de guidage (8) sont conçus en forme de moulures, la hauteur de moulure correspondant à l'espacement entre les plaques d'échangeur de chaleur (2) formant le canal (5) respectif, et en ce que quelques canaux de guidage (8) présentent des dérivations (30) et d'autres canaux de guidage (8) sont conçus sans dérivations (30).
  7. Echangeur de chaleur à plaques selon la revendication 6, caractérisé en ce que des entrées et sorties (9a ; 10a) supplémentaires sont disposées dans les canaux de guidage (8) dans la zone des dérivations (30) et en ce que (dans le cas d'échangeurs de chaleur à plaques (1) en forme de parallélépipède) au moins un canal de guidage (8) dérivé est prévu entre le bord (13) de la plaque d'échangeur de chaleur (2) et les canaux d'écoulement (4) ou dans les zones d'angle (22 - 25) de l'échangeur de chaleur à plaques (1).
  8. Echangeur de chaleur à plaques selon l'une quelconque des revendications précédentes, caractérisé en ce que quelques canaux de guidage (8) sont conçus d'un seul tenant d'un canal d'écoulement (4) à l'autre canal d'écoulement (4) et d'autres canaux de guidage (8) sont sensiblement plus courts, leur sortie (10) et leur entrée (9) étant disposées de façon éloignée des canaux d'écoulement (4).
  9. Echangeur de chaleur à plaques selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque supplémentaire (6) présente des nopes (14) ou des saillies similaires, qui ont la même hauteur que les canaux de guidage (8) et sont reliées à la plaque d'échangeur de chaleur (2) limitrophe.
EP01107118A 2000-05-03 2001-03-22 Echangeur de chaleur à plaques Expired - Lifetime EP1152204B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10021481A DE10021481A1 (de) 2000-05-03 2000-05-03 Plattenwärmetauscher
DE10021481 2000-05-03

Publications (3)

Publication Number Publication Date
EP1152204A2 EP1152204A2 (fr) 2001-11-07
EP1152204A3 EP1152204A3 (fr) 2002-06-12
EP1152204B1 true EP1152204B1 (fr) 2003-11-19

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ID=7640610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01107118A Expired - Lifetime EP1152204B1 (fr) 2000-05-03 2001-03-22 Echangeur de chaleur à plaques

Country Status (4)

Country Link
US (1) US6530425B2 (fr)
EP (1) EP1152204B1 (fr)
DE (2) DE10021481A1 (fr)
ES (1) ES2211683T3 (fr)

Cited By (3)

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DE102006048305B4 (de) * 2006-10-12 2011-06-16 Modine Manufacturing Co., Racine Plattenwärmetauscher
DE102014015170B3 (de) * 2014-10-10 2015-10-15 Modine Manufacturing Company Gelöteter Wärmetauscher und Herstellungsverfahren
US20240288233A1 (en) * 2023-02-27 2024-08-29 Benteler Automobiltechnik Gmbh Heat exchanger plate

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EP3399271B1 (fr) * 2017-05-02 2021-08-18 HS Marston Aerospace Limited Échangeur de chaleur
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DE102006048305B4 (de) * 2006-10-12 2011-06-16 Modine Manufacturing Co., Racine Plattenwärmetauscher
DE102014015170B3 (de) * 2014-10-10 2015-10-15 Modine Manufacturing Company Gelöteter Wärmetauscher und Herstellungsverfahren
US20240288233A1 (en) * 2023-02-27 2024-08-29 Benteler Automobiltechnik Gmbh Heat exchanger plate
US12510310B2 (en) * 2023-02-27 2025-12-30 Benteler Automobiltechnik Gmbh Heat exchanger plate

Also Published As

Publication number Publication date
US6530425B2 (en) 2003-03-11
DE10021481A1 (de) 2001-11-08
ES2211683T3 (es) 2004-07-16
EP1152204A2 (fr) 2001-11-07
DE50100984D1 (de) 2003-12-24
EP1152204A3 (fr) 2002-06-12
US20010054501A1 (en) 2001-12-27

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