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EP0974804B1 - Echangeur de chaleur, en particulier échangeur de chaleur pour gaz d'échappement - Google Patents

Echangeur de chaleur, en particulier échangeur de chaleur pour gaz d'échappement Download PDF

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Publication number
EP0974804B1
EP0974804B1 EP99113222A EP99113222A EP0974804B1 EP 0974804 B1 EP0974804 B1 EP 0974804B1 EP 99113222 A EP99113222 A EP 99113222A EP 99113222 A EP99113222 A EP 99113222A EP 0974804 B1 EP0974804 B1 EP 0974804B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plates
ducts
flow ducts
flow channels
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
EP99113222A
Other languages
German (de)
English (en)
Other versions
EP0974804A2 (fr
EP0974804A3 (fr
Inventor
Roland Dipl.-Ing. Strähle
Wolfgang Dipl.-Ing. Knecht
Viktor Brost
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 EP0974804A2 publication Critical patent/EP0974804A2/fr
Publication of EP0974804A3 publication Critical patent/EP0974804A3/fr
Application granted granted Critical
Publication of EP0974804B1 publication Critical patent/EP0974804B1/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
    • F28F3/04—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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

  • the invention relates to a heat exchanger, in particular an exhaust gas heat exchanger, consisting of a stack of heat exchanger plates that separate flow form channels that run parallel to each other, with collecting spaces, inlet and outlet for the exhaust gas and for the preferably liquid coolant.
  • EP 677 715 A1 represents the prior art, of which the preamble has been derived.
  • the exhaust gas heat exchanger there is advantageous because that Exhaust gas without significant deflections that cause pressure losses Can flow through the heat exchanger.
  • the stack of heat exchanger plates by an enclosure enclosed, which leads to the disadvantages already mentioned.
  • the plate pack is executed according to the so-called rod-plate construction, which means many individual There are components that need to be assembled. That can be as be viewed elaborately.
  • the object of the invention is a compact and efficient heat exchanger to propose that is inexpensive to manufacture and a better one Should have flexibility with regard to the installation space and the connection positions.
  • the solution according to the invention results from the patent claims.
  • the heat exchanger according to the invention has flow channels of different lengths. The range mentioned above corresponds approximately to the length of the shorter flow channels.
  • the rectangular slats can be, or have a shape other than rectangular can. Rectangular slats ensure good heat transfer on the one hand, without on the other hand to offer the exhaust gas opportunities to deposit and in the course of Time to close the flow channels.
  • the heat exchanger plates have knobs on the coolant side.
  • the pimples one heat exchanger plate touch the knobs of the next heat exchanger plate, so that they can be connected to each other and to Compactness of the heat exchanger contribute.
  • knobs instead of these knobs also fins or other turbulence-generating elements can be provided.
  • Both flow channels are through Merging heat exchanger plates formed, all the same Have shape, which is very advantageous in terms of production technology and to reduce costs contributes.
  • the different length of the flow channels is also through this a kind of heat exchanger plates have been realized.
  • the heat exchanger plates have edges that extend across the entire length of the panels Formed side, for example downwards with respect to the plate level, (Back) and one over the length of the shorter flow channels Have edge characteristics that are opposite to the deformation, i.e. after is formed above the plate level (front).
  • An advantageous embodiment has the ones already mentioned on the same side of the panel (front) Nubs.
  • Two heat exchanger plates each with their over the Total length-reaching edges, so with the back, put together and form the one flow channel between them. The other flow channel is realized in that the next heat exchanger plate on the front Front is placed, which is followed by back to back, etc.
  • the inventive idea with shorter and longer flow channels can of course also - realized differently than described above - thereby be that instead of the edge reshaping and edge stamping rods be inserted, which have the length of the shorter flow channels and the are connected to the plates.
  • the plates are preferably on the opposite longitudinal edges only folded. Two such plates will be then folded together like a box and forming a flow channel within out.
  • the adjacent flow channel is through the mentioned rods formed or limited on the long sides.
  • the water-cooled exhaust gas heat exchanger 1 is in a first in FIGS. 1 to 6 Embodiment shown.
  • the exhaust gas heat exchanger consists entirely of a suitable stainless steel. All connections between the parts are made by soldering.
  • Fig. 1 the left collecting space 4 for the cooling water and the collecting space 7 drawn for the exhaust gas in section to show details.
  • the exhaust gas flows through the inlet 14 into the collecting space 7 and through the flow channels 2 in a straight path through the heat exchanger 1 to pass this over the Leave outlet 15 again.
  • the inlets and outlets 14, 15 have suitable ones Connections that have been shown here simply as connection flanges.
  • the Cooling water flows at the inlet 8 into the collecting space 4 and is distributed over the Flow channels 3, which run parallel to the flow channels 2 and alternate with these.
  • the collecting rooms 4 are from the tube sheets 5 and 6 been formed, the jacket 5 of the collecting spaces 4 by the erected Edge 12 of the tube sheet 5, the one with the edge of the tube sheet 6 Connection surface 13 forms, has been produced in this embodiment.
  • the stack consisting of identical heat exchanger plates P1 and P2 has shorter flow channels 3 on and longer flow channels 2, what below is explained in more detail.
  • the different lengths L and I of the flow channels 2 and 3 was drawn in Fig. 1.
  • the longer flow channels 2 go through the collecting spaces 4 and are in the openings 17 of the second Pipe base 6 attached sealingly. (see also FIG. 4, in which three openings 17 for which three flow channels 2 are shown)
  • FIG. 4 and also FIG. 3 further show that in the flow channels 2 Rectangular fins 25 have been inserted to improve the heat exchange.
  • the fins 25 are with the heat exchanger plates P1 and P2 and with connected to the walls of the flow channels 2.
  • the tube sheet 5 merely has an opening 16, as shown in FIG. 7.
  • the opening 16 is a rectangle.
  • Fig. 6 shows in an enlarged section the attachment of the Heat exchanger plates P1 and P2 in this opening 16.
  • An end plate 11 has been drawn.
  • An identical plate 11 is located at the bottom of the opening 16, not shown.
  • the end plates 11 cover the heat exchanger plates P1; P2 completely (Fig. 2) and limit the upper and lower flow channel 3, that for cooling water is provided.
  • identical heat exchanger plates were used P1 and P2 are used, which have been shown in FIGS. 10 to 12 are.
  • the heat exchanger plates P1; P2 are rectangular here and have consequently two opposite longitudinal edges 21.
  • the heat exchanger plates P1; P2 are connected to their edge features 23 and the flow channels 3 train. Into these flow channels 3 extend into This embodiment knobs 20.
  • the knobs 20 have the same height like the margins 23 and are otherwise arranged so that they with the knobs 20 on the adjacent heat exchanger plate P1 or P2 Touch to be connected as well.
  • Fig. 8 shows another embodiment in which the edge 21 of the heat exchanger plates P1 and P2 were simply folded over the entire length L. is, so that the heat exchanger plates P1 and P2 are nested one inside the other can be used to form the flow channels 2. Between these flow channels 2 is on both edges 21 each a rod 24, which is twice the height of Knobs 20 has. The length of the rods 24 corresponds to the length l, so that on in this way the flow channels 3 can be formed.
  • FIG. 9 Another embodiment is shown in FIG. 9, which makes it clear that with regard to the flow through the heat exchanger realizes all possible variants are, whereby the proposed basic principle is not abandoned.
  • the inlet 14 and the outlet 15 are arranged on this collecting space 7, so that the exhaust gas for example via two flow channels 3 in the one on the opposite Side arranged deflection plenum 18 flow and after the deflection return to outlet 15 via the other two flow channels 3 can.
  • Another embodiment not shown, has the inlet and outlet for the coolant on one side of the heat exchanger and the inlet and outlet for the exhaust gas on the opposite side of the heat exchanger.

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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)
  • Separation By Low-Temperature Treatments (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (12)

  1. Echangeur de chaleur, en particulier échangeur de chaleur pour gaz d'échappement, se composant d'un empilement de plaques d'échangeur de chaleur (P1 ; P2), qui constituent des canaux d'écoulement séparés (2, 3) s'étendant parallèlement les uns aux autres, avec des chambres collectrices (7, 4), une entrée et une sortie (8, 9, 14, 15) pour les gaz d'échappement ainsi que pour le réfrigérant de préférence liquide,
    caractérisé en ce que
    les canaux d'écoulement (2) formés à partir des plaques d'échangeur de chaleur (P1 ; P2) sont plus longs (L) pour un fluide que les canaux d'écoulement (3) pour l'autre fluide et où les canaux d'écoulement (2) plus longs traversent l'au moins une chambre collectrice (4) pour cet autre fluide, présentant les entrée et/ou sortie (8 ; 9) et en ce que dans la région (I), dans laquelle les deux canaux d'écoulement (2 ; 3) s'étendent parallèlement l'un à l'autre, l'échangeur de chaleur (1) est réalisé sans boítier.
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que la chambre collectrice (4) pour l'autre fluide est limitée par deux fonds à tubes opposés (5 ; 6) et est entourée par une enveloppe (10) sur laquelle se trouvent les entrée et/ou sortie (8 ; 9).
  3. Echangeur de chaleur selon la revendication 2, caractérisé en ce que l'enveloppe est formée par le bord (12) d'un fond à tube (5), qui forme avec le bord de l'autre fond à tube (6) une surface de connexion (13).
  4. Echangeur de chaleur selon la revendication 2 ou la revendication 3, caractérisé en ce que le premier fond à tube (5) présente une ouverture (16), dans laquelle débouche l'empilement de plaques d'échangeur de chaleur (P1 ; P2) présentant deux canaux d'écoulement (2 ; 3) et le deuxième fond à tube (6) présente des ouvertures (17), dans lesquelles débouchent les canaux d'écoulement plus longs (2).
  5. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'entrée (14) et la sortie (15) pour les gaz d'échappement et/ou pour le réfrigérant sont disposées à des extrémités opposées de l'échangeur de chaleur (1).
  6. Echangeur de chaleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'entrée (14) et la sortie (15) pour les gaz d'échappement et/ou pour le réfrigérant sont disposées d'un côté de l'échangeur de chaleur (1) et il est prévu à l'extrémité opposée une chambre collectrice de déflexion (16).
  7. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les plaques d'échangeur de chaleur (P1 ; P2) sont coudées (22) de préférence au niveau des bords longitudinaux opposés (21) sur toute la longueur des plaques vers un côté des plaques (dos R) et présentent un estampage du bord (23) sur une partie (I) de la longueur totale (L) en direction de l'autre côté des plaques (face F).
  8. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les plaques d'échangeur de chaleur (P1 ; P2) forment dos (R) à dos (R) les canaux d'écoulement plus longs (2), auxquels se raccordent des plaques d'échangeur de chaleur (P1 ; P2) face (F) à face (F), qui forment les canaux d'écoulement plus courts (3), suivis à nouveau par des plaques d'échangeur de chaleur (P1 ; P2) dos (R) à dos (R).
  9. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les canaux d'écoulement plus courts (3) sont de préférence des canaux d'eau de refroidissement et les canaux plus longs (2) sont prévus pour les gaz d'échappement.
  10. Echangeur de chaleur selon l'une quelconque des revendications 2 à 9, caractérisé en ce que les canaux extérieurs (3) sont des canaux d'eau de refroidissement qui sont limités chacun par une plaque de fermeture (11), l'un des fonds à tubes (5) présentant une ouverture (16) approximativement rectangulaire pour recevoir l'empilement des plaques d'échangeur de chaleur (P1 ; P2) avec les deux canaux d'écoulement (2 ; 3) et les extrémités des plaques de fermeture (11).
  11. Echangeur de chaleur selon l'une quelconque des revendications 2 à 9, caractérisé en ce que les canaux extérieurs (2) sont des canaux de gaz d'échappement, l'un des fonds à tubes (5) possédant une ouverture qui présente des sections dans les coins pour les estampages du bord (23) des plaques d'échangeur de chaleur supérieure et inférieure (P1 ; P2), pour recevoir l'empilement complet des plaques d'échangeur de chaleur (P1 ; P2).
  12. Echangeur de chaleur selon l'une quelconque des revendications 1 à 6 et 9 à 10, caractérisé en ce que les plaques d'échangeur de chaleur (P1 ; P2) présentent aux bords (21) un rebord se prolongeant sur toute la longueur (L) et sont placées l'une dans l'autre en forme de boítes pour former les canaux d'écoulement (2) et des barres (24) sont disposées entre les paires de plaques, pour former les canaux d'écoulement (3), dont la longueur correspond approximativement à la longueur (I) des canaux d'écoulement plus courts (3).
EP99113222A 1998-07-24 1999-07-08 Echangeur de chaleur, en particulier échangeur de chaleur pour gaz d'échappement Expired - Lifetime EP0974804B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833338A DE19833338A1 (de) 1998-07-24 1998-07-24 Wärmetauscher, insbesondere Abgaswärmetauscher
DE19833338 1998-07-24

Publications (3)

Publication Number Publication Date
EP0974804A2 EP0974804A2 (fr) 2000-01-26
EP0974804A3 EP0974804A3 (fr) 2000-06-07
EP0974804B1 true EP0974804B1 (fr) 2002-10-09

Family

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EP99113222A Expired - Lifetime EP0974804B1 (fr) 1998-07-24 1999-07-08 Echangeur de chaleur, en particulier échangeur de chaleur pour gaz d'échappement

Country Status (6)

Country Link
US (1) US6293337B1 (fr)
EP (1) EP0974804B1 (fr)
JP (1) JP2000097578A (fr)
AT (1) ATE225926T1 (fr)
DE (2) DE19833338A1 (fr)
ES (1) ES2185276T3 (fr)

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US4475589A (en) * 1981-01-21 1984-10-09 Tokyo Shibaura Denki Kabushiki Kaisha Heat exchanger device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10359806A1 (de) * 2003-12-19 2005-07-14 Modine Manufacturing Co., Racine Wärmeübertrager mit flachen Rohren und flaches Wärmeübertragerrohr
US9395121B2 (en) 2007-01-23 2016-07-19 Modine Manufacturing Company Heat exchanger having convoluted fin end and method of assembling the same

Also Published As

Publication number Publication date
US6293337B1 (en) 2001-09-25
ATE225926T1 (de) 2002-10-15
ES2185276T3 (es) 2003-04-16
EP0974804A2 (fr) 2000-01-26
JP2000097578A (ja) 2000-04-04
EP0974804A3 (fr) 2000-06-07
DE19833338A1 (de) 2000-01-27
DE59902999D1 (de) 2002-11-14

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