WO2012136765A1 - Dispositif de refroidissement des gaz d'échappement - Google Patents

Dispositif de refroidissement des gaz d'échappement Download PDF

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Publication number
WO2012136765A1
WO2012136765A1 PCT/EP2012/056280 EP2012056280W WO2012136765A1 WO 2012136765 A1 WO2012136765 A1 WO 2012136765A1 EP 2012056280 W EP2012056280 W EP 2012056280W WO 2012136765 A1 WO2012136765 A1 WO 2012136765A1
Authority
WO
WIPO (PCT)
Prior art keywords
inserts
exhaust gas
gas cooler
exhaust
cooler according
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.)
Ceased
Application number
PCT/EP2012/056280
Other languages
German (de)
English (en)
Inventor
Tobias Fetzer
Steffen GRÖZINGER
Mario HOPPE
David KENNTNER
Boris Kerler
Hans-Joachim Krauss
Vinko Lukcin
Christian Schnepf
Hennning SCHRÖDER
Rainer STAUCH
Mehmet Tosun
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.)
Mahle International GmbH
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Mahle International GmbH
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 Behr GmbH and Co KG, Mahle International GmbH filed Critical Behr GmbH and Co KG
Priority to CN201290000407.9U priority Critical patent/CN203719474U/zh
Priority to EP12714652.0A priority patent/EP2694903A1/fr
Publication of WO2012136765A1 publication Critical patent/WO2012136765A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • 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
    • 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
    • F28F3/027—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 with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • 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
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
    • 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

Definitions

  • the present invention relates to an exhaust gas cooler for an internal combustion engine, in particular in a motor vehicle.
  • exhaust gas has long been fed back into a combustion process, whereby the oxygen concentration in the cylinder can be reduced and the temperature and speed of the combustion can be lowered.
  • the ⁇ -rate can be lowered and thereby the ⁇ -emissions are reduced.
  • exhaust gas coolers are increasingly being used, with which the temperature of the exhaust gas to be recirculated is deliberately lowered.
  • Heat exchanger tubes and extending between the rows slots are provided.
  • a disadvantage of the known from the prior art heat exchangers and exhaust gas coolers is that while they provide a relatively high cooling performance, but may be prone to so-called fouling, fouling, sooting or Verrußungsvone, formed in which deposits on the individual cooling geometries and thereby the performance of the exhaust gas cooler or heat exchanger is increasingly deteriorated. If the exhaust gas coolers known from the prior art are also designed as so-called tube bundle coolers, their manufacture is comparatively complicated and therefore expensive.
  • the present invention therefore deals with the problem of providing an improved embodiment for an exhaust gas cooler, which
  • the present invention is based on the general idea to provide at least two inserts for increasing the heat transfer in an at least one of the tubes in an exhaust gas cooler designed as a tube cooler for an internal combustion engine, in particular in a motor vehicle with a tube bundle through which exhaust gas or coolant flows offset and arranged in alignment or twisted.
  • the inserts increase the surface available for heat transfer and thereby improve the cooling performance of the exhaust gas cooler according to the invention, wherein the individual, relatively short inserts, can be mounted much easier than previous, for example, over the entire length of the tube extending inserts.
  • inserts according to the invention can be significantly increased.
  • By axially staggered and at the same time twisted arrangement beyond a so-called “fouling" (fouling) of the exhaust gas cooler can be positively influenced, whereby deposits on the inserts or on the inner wall of the tubes can be avoided, but at least reduced, so that a The arrangement of the individual inserts offset axially relative to one another and simultaneously rotated relative to one another increases the occurring in the respective tube
  • the exhaust gas cooler is therefore characterized by an optimization of the inlays (inserts), whereby the digester behavior, the power density as well as a pressure loss can be positively influenced.
  • At least two inserts are identical
  • the inserts can thus be produced inexpensively and cut by a mere axial cutting to length, due to the identical design of the individual inserts or at least two inserts, also the variety of parts and thus the storage and logistics costs can be reduced.
  • At least one insert has at least one wing (winglet) for generating turbulence and / or gill-like openings. Both through the wings and through the gill-like openings one becomes
  • Turbulence causes, whereby an improved sweeping the
  • Heat exchanger surfaces that is, the surfaces of the inserts and the tube achieved and thus improved heat transfer and also avoidance / reduction of deposits can be achieved.
  • the turbulence generated by the wings or gill-like openings also reduce the risk of deposits and increase the chance, if such deposits should have formed contrary to expectations that they dissolve again in the sense of a self-cleaning effect.
  • the winglets can also be designed, for example, as rib ribs or gill ribs. In ribbed ribs, segments are exposed from a ribbed surface, causing cross-mixing between individual ribs
  • At least one insert is glued, soldered, welded or caulked in the associated tube.
  • the exhaust gas cooler may of course be designed as a very ordinary heat exchanger and thereby have a flowed through by a first medium tube bundle, wherein in at least one of the tubes of the tube bundle at least two separate inserts for
  • Increase of the heat transfer are provided which are axially offset from each other and arranged mutually rotated.
  • FIG. 1 shows an exhaust gas cooler according to the invention in a view Fig. 2 is a sectional view and a view of a pipe of
  • Fig. 4a-c is a sectional view through a pipe of the exhaust gas cooler with
  • an exhaust gas cooler 1 for an internal combustion engine, for example a motor vehicle, has a tube bundle 3 through which hot exhaust gas 2 flows.
  • the exhaust gas cooler 1 can generally also be any heat exchanger.
  • the tube bundle 3 has a plurality of mutually parallel tubes 4, the outside of a cooling medium 8, for example cold air, are flowed around. At least in one of these tubes 4, preferably in all tubes 4, at least two inserts 5 are provided for increasing the heat transfer, which are axially offset from one another and at the same time arranged twisted relative to each other (compare FIGS.
  • An axial length of the inserts 5 according to the invention can vary between 10 and 1000 mm, wherein at least two inserts 5 are arranged at between 0 ° and up to 90 ° to each other within the respective tube 4.
  • the twisted arrangement of each other not only improved turbulence and thus improved sweeping of the hot exhaust gas 2 along the heat exchanger surfaces can be achieved, but also an undesirable and negative fouling behavior can be reduced. This fouling behavior leads to deposits on an inner wall of the tube 4 and / or on the inserts 5, whereby the heat transfer and thus ultimately the performance of the exhaust gas cooler 1 are impaired.
  • the inserts 5 may have a smooth surface, as shown in particular in Figures 2 and 4a, 4b, whereby the provision of vanes 6 (winglets) or gill-like openings 7 (see Figure 4b) may also be provided for generating turbulence can.
  • Such wings 6 or breakthroughs 7 in turn increase the turbulence of the exhaust gas 2 within the tube 4 and thereby improve the heat transfer.
  • the individual inserts 5 within the tube 4 can thereby abut each other frontally or else arranged with an intermediate
  • the insert 5 shown there has a meandering cross-sectional shape.
  • these can be glued, soldered, welded or caulked / jammed, for example, with the tube 4.
  • care must be taken that they abut flat against the inner wall of the tube 4, for example, at their free ends 9, thereby achieving a high level of stability
  • the exhaust gas cooler according to the invention can be produced comparatively inexpensively.
  • the exhaust gas cooler 1 is in principle only one possible embodiment, so that the tubes 4 according to the invention with the inserts 5 arranged therein in the context of a tube bundle. 3
  • the inserts 5 according to the invention not only the power density of the exhaust gas cooler 1 can be significantly improved or increased, but positively affect a fouling, since the inserts 5 a deposition of particular
  • the inserts 5 and the tubes 4 for example, metal, in particular stainless steel, aluminum or non-ferrous metal, are used, of course, other good heat conducting materials are conceivable. It would also be possible to use coated materials (for example catalytic layer for the total oxidation of possibly present ones)
  • the individual inserts 5 can, of course, also be connected to one another at the end face, in particular adhesively bonded, soldered or welded.
  • the production of the exhaust gas cooler 1 according to the invention can be significantly facilitated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

L'invention concerne un dispositif de refroidissement des gaz d'échappement (1) pour un moteur à combustion interne, notamment dans un véhicule à moteur comportant un faisceau tubulaire (3) dans lequel circulent des gaz d'échappement (2) ou un produit réfrigérant, au moins un des tubes (4) étant doté de deux inserts (5) destinés à augmenter le transfert de chaleur et disposés de façon à ce qu'ils présentent un décalage axial et angulaire l'un par rapport à l'autre. Cela permet notamment d'empêcher tout dépôt de particules susceptible d'altérer la performance du dispositif de refroidissement des gaz d'échappement (1).
PCT/EP2012/056280 2011-04-05 2012-04-05 Dispositif de refroidissement des gaz d'échappement Ceased WO2012136765A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201290000407.9U CN203719474U (zh) 2011-04-05 2012-04-05 废气冷却器
EP12714652.0A EP2694903A1 (fr) 2011-04-05 2012-04-05 Dispositif de refroidissement des gaz d'échappement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011006793A DE102011006793A1 (de) 2011-04-05 2011-04-05 Abgaskühler
DE102011006793.0 2011-04-05

Publications (1)

Publication Number Publication Date
WO2012136765A1 true WO2012136765A1 (fr) 2012-10-11

Family

ID=45974305

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/056280 Ceased WO2012136765A1 (fr) 2011-04-05 2012-04-05 Dispositif de refroidissement des gaz d'échappement

Country Status (4)

Country Link
EP (1) EP2694903A1 (fr)
CN (1) CN203719474U (fr)
DE (1) DE102011006793A1 (fr)
WO (1) WO2012136765A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2019102B1 (en) * 2017-06-21 2019-01-02 Apex Int Holding B V Ferrule for a Plate-type Heat Exchanger
DE102017218254A1 (de) * 2017-10-12 2019-04-18 Mahle International Gmbh Abgaswärmeübertrager

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813747A1 (de) 1978-03-30 1979-10-04 Thermal Waerme Kaelte Klima Waermetauscherlamelle und anwendungen derselben
DE3018978A1 (de) 1979-05-25 1980-11-27 Ferodo Sa Wirbelbildner
EP0275813A1 (fr) 1986-12-29 1988-07-27 United Technologies Corporation Dispositif pour l'accroissement du transfert de chaleur
JP2000161872A (ja) * 1998-11-25 2000-06-16 Toyota Motor Corp ２重配管式熱交換器
JP2002054511A (ja) * 2000-08-14 2002-02-20 Hino Motors Ltd Ｅｇｒクーラ
US20060048921A1 (en) * 2004-09-08 2006-03-09 Usui Kokusai Sangyo Kaisha Limited Fin structure, heat-transfer tube having the fin structure housed therein, and heat exchanger having the heat-transfer tube assembled therein
DE102005051709A1 (de) 2005-10-28 2007-05-03 Albert Handtmann Metallgusswerk Gmbh & Co. Kg Abgaskühler
US7337831B2 (en) 2001-08-10 2008-03-04 Yokohama Tlo Company Ltd. Heat transfer device
EP1985953A1 (fr) * 2007-04-26 2008-10-29 Behr GmbH & Co. KG Echangeur thermique, en particulier destiné au refroidissement des gaz d'echappement, procédé d'utiliser d'un tel échangeur et système comprenant un refroidisseur EGR

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1621370A (en) * 1969-06-18 1971-12-16 Giulliano Rossi Heat transfer pipes
US3664638A (en) * 1970-02-24 1972-05-23 Kenics Corp Mixing device
HU173583B (hu) * 1976-06-30 1979-06-28 Energiagazdalkodasi Intezet Ustrojstvo dlja uluchshenija teploperedachi v teploobmennykh trubakh
US4200149A (en) * 1976-12-06 1980-04-29 Murray Pechner Heat exchanger with fluid turbulator
US6962193B2 (en) * 2002-04-09 2005-11-08 Honeywell Interntaional Inc. Tubular catalytic aircraft precooler
DE102004057407A1 (de) * 2004-01-13 2005-08-11 Behr Gmbh & Co. Kg Flachrohr für Wärmeübertrager, insbesondere Kondensatoren

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813747A1 (de) 1978-03-30 1979-10-04 Thermal Waerme Kaelte Klima Waermetauscherlamelle und anwendungen derselben
DE3018978A1 (de) 1979-05-25 1980-11-27 Ferodo Sa Wirbelbildner
EP0275813A1 (fr) 1986-12-29 1988-07-27 United Technologies Corporation Dispositif pour l'accroissement du transfert de chaleur
JP2000161872A (ja) * 1998-11-25 2000-06-16 Toyota Motor Corp ２重配管式熱交換器
JP2002054511A (ja) * 2000-08-14 2002-02-20 Hino Motors Ltd Ｅｇｒクーラ
US7337831B2 (en) 2001-08-10 2008-03-04 Yokohama Tlo Company Ltd. Heat transfer device
US20060048921A1 (en) * 2004-09-08 2006-03-09 Usui Kokusai Sangyo Kaisha Limited Fin structure, heat-transfer tube having the fin structure housed therein, and heat exchanger having the heat-transfer tube assembled therein
DE102005051709A1 (de) 2005-10-28 2007-05-03 Albert Handtmann Metallgusswerk Gmbh & Co. Kg Abgaskühler
EP1985953A1 (fr) * 2007-04-26 2008-10-29 Behr GmbH & Co. KG Echangeur thermique, en particulier destiné au refroidissement des gaz d'echappement, procédé d'utiliser d'un tel échangeur et système comprenant un refroidisseur EGR

Also Published As

Publication number Publication date
CN203719474U (zh) 2014-07-16
EP2694903A1 (fr) 2014-02-12
DE102011006793A1 (de) 2012-10-11

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