EP0772018B1 - Wärmeübertrager zum Kühlen von Abgas - Google Patents

Wärmeübertrager zum Kühlen von Abgas Download PDF

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Publication number
EP0772018B1
EP0772018B1 EP96115729A EP96115729A EP0772018B1 EP 0772018 B1 EP0772018 B1 EP 0772018B1 EP 96115729 A EP96115729 A EP 96115729A EP 96115729 A EP96115729 A EP 96115729A EP 0772018 B1 EP0772018 B1 EP 0772018B1
Authority
EP
European Patent Office
Prior art keywords
heat
exchanger according
tube
sheet
welded
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
EP96115729A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0772018A3 (de
EP0772018A2 (de
Inventor
Herbert Dr.-Ing. Damsohn
Conrad Dr.-Ing. Pfender
Thomas Dipl.-Ing. Karbach (Th)
Jan Wenzelburger
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 Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 filed Critical Behr GmbH and Co KG
Publication of EP0772018A2 publication Critical patent/EP0772018A2/de
Publication of EP0772018A3 publication Critical patent/EP0772018A3/de
Application granted granted Critical
Publication of EP0772018B1 publication Critical patent/EP0772018B1/de
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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
    • 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
    • F28D7/1684—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 the conduits having a non-circular cross-section
    • 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
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49391—Tube making or reforming

Definitions

  • the invention relates to a heat exchanger for cooling Exhaust gas from an internal combustion engine with a plurality of channels for guiding the exhaust gas, which is inclined to the flow direction of the exhaust gas arranged in pairs, from at least one wall of the channels protruding tabs and on the outside with a liquid Coolant can flow around.
  • the invention has for its object a heat exchanger to create the type mentioned, which at essentially same structure can be manufactured in different sizes is, for the individual components none too high dimensional tolerances must be observed.
  • This object is achieved in that as channels for the exhaust gas a bundle of rectangular tubes is provided, the ends of which are welded into grid-shaped tube sheets that the bundle is surrounded by rectangular tubes with a sheet metal jacket, which the Contour of the bundle follows, which enters with a cooling medium and is provided with a cooling medium outlet and with the Tube sheets is welded, and that the ends of the sheet metal jacket are provided with welded flange plates, each through a central opening to the bundle of rectangular tubes are open and with fasteners for fastening are provided on pipe sections of an exhaust pipe.
  • the heat exchanger according to the invention consists in essentially made of sheet metal components that are manufactured in a simple manner can be. Welding is preferred as laser welding or micro TIG welding.
  • the lattice-shaped Tube sheets made of sheet steel from about 1mm to 3mm thickness are punched, according to the number and Arrangement of rectangular tubes breakthroughs.
  • the distances of the Rectangular tubes and thus the web width of the tube sheet varies depending on the mass flow of the coolant and is also in the range between 1mm and 3mm.
  • the outer contour the tube sheets result from the number and arrangement of the flat tubes.
  • the sheet metal jacket also becomes easier Made of sheet steel, the one of the tube sheets has similar sheet thickness.
  • the sheet metal jacket can be in Steps according to the contour of the tube sheets in simple Way be edged.
  • the provided with fasteners Flange plates allow an arrangement of the Heat exchanger between two pipe sections of an exhaust pipe, for example in a manner similar to the arrangement of a catalyst.
  • the rectangular tubes each made of two welded together Pipe shells are formed.
  • the pair of tabs can be attached directly to the rectangular tube or Be part of this rectangular tube.
  • the flange plates in diametrically opposite one another Areas are provided with threaded sleeves. This is a screw connection with a simple Counter flange of a pipe section of an exhaust pipe possible.
  • the sheet metal jacket near the in the flow direction of the Exhaust front flange plate with a coolant inlet and near the rear flange plate with a coolant outlet is provided. It is first achieved that the cooling medium in direct current to the exhaust gas through the heat exchanger is directed. This ensures that the danger of Vapor formation on the inlet side of the exhaust gas is reduced is because here the cooling medium is the relatively lowest temperature having.
  • cooling medium inlet and the cooling medium outlet on opposite Sides of the sheet metal jacket are arranged. Because of this arrangement are the flow paths of the individual Current paths for the cooling medium around the rectangular tubes in the essentially the same length, so that a uniform flow this rectangular tubes is guaranteed.
  • the sheet metal jacket is composed of two preformed sheet metal shells is that by means of joint connections to the tube sheets connect.
  • the two sheet metal shells result after welding a rigid and pressure-resistant housing.
  • the provision of joint connections has the advantage that those to be welded Elements a certain cohesion even before welding have, so that the welding process is relatively simple can be carried out.
  • the heat exchanger shown in Figures 1 and 2 has one Bundle of flat tubes (10) that have a wall thickness in the area have from 0.3mm to 0.4mm.
  • the ends of the rectangular tubes (10) are inserted into grid-shaped tube sheets (11) and welded to them.
  • These tube sheets (11) are made punched a steel sheet that is a sheet thickness of the order of magnitude from 1mm to 3mm.
  • the bridges between the Have breakthroughs that serve to accommodate the flat tubes a width that is approximately the wall thickness of the rectangular tubes (10) corresponds.
  • the arrangement of the breakthroughs and thus the The webs of the tube sheets (11) are selected so that they are roughly approximated a circular or oval cross section is created.
  • the webs surrounding the external rectangular tubes have the same web width, so that the outer contour of the Tube sheets of the contour of the tube bundle - enlarged by the Bridge width - corresponds.
  • the tube sheets (11) are in the ends of a sheet metal jacket (12) welded, which is also indicated by dashed lines in Fig. 7.
  • the sheet metal jacket (12) consists of two half-shells made of sheet steel, the one essentially the thickness of the tube sheets (11) has the appropriate thickness.
  • the half shells are corresponding the outer contour of the tube sheets (11) shaped, for example folded or using a high pressure forming process.
  • the two half-shells of the sheet metal jacket (12) are Longitudinal weld seams (13) joined together.
  • the tube sheets (11) with a total of four somewhat widened approaches (14) provided the corresponding Cutouts at the end of the two half-shells of the sheet metal jacket (12) are assigned, so that hereby a joint connection is created.
  • flange sheets (15) At the two ends of the sheet metal jacket (12) are flange sheets (15) welded, which are also stamped from sheet metal and which is a sheet thickness similar to the sheet thickness of the tube sheets (11) exhibit.
  • the flange plates (15) are diametrically divided opposite areas laterally over the contour of the Sheet metal over. In this area the sheet metal jacket (12) extended in the axial direction beyond the tube sheets (11) and with these extended approaches into slit-shaped recesses (17) of the flange plates (15) are inserted. In this A weld is made from the outside of the area Flange plates (15) ago, while in the remaining area a weld is provided from the other side.
  • the Flange plates (15) a medium, preferably circular Recess (18), the dimensions of which precede and follow, Pipe pieces, not shown, of an exhaust system or exhaust system of a vehicle.
  • the threaded sleeves (20) shown in Fig. 8, on their open side assigned to the flange plates (15) with a Ring collar (22) are also provided on their closed Side with a ring collar (23) with which they are each inserted into a connecting pipe (24).
  • the connecting pipe (24) and the threaded sleeve (20) are each with a weld seam (25) welded together. The outside the weld seam (25) is ground off. After that, in the connecting pipe (24) milled into a lateral recess (26).
  • the threaded sleeves (20) are with their ring collar (23) welded into recesses in the flange plates (15) and with welded the flange plates (15).
  • the connecting pipes (24) are additionally attached to the sheet metal jacket by means of retaining webs (27) welded on.
  • the respective outer edges of the holding webs (27) extend tangentially to the connecting pipe (24) to a plane Surface of the sheet metal jacket. They are made of welded cover plates (28) covered on the sheet metal jacket (12), the Retaining webs (27), the connecting tube (24), the threaded sleeves (20) and the flange plate (15) are welded. So that will in the area of the recesses (26) between the holding webs (27) and the flange plates (15) form a kind of water tank, in its area the sheet metal jacket with an entry opening is provided.
  • the rectangular tubes are in pairs arranged, facing each other from opposite walls protruding tabs (32) provided obliquely to the direction of flow of the exhaust gas are arranged so that they of diverge at a narrow point at an angle of about 40 °.
  • the rectangular tubes each consist of two tube shells (10 ') welded together, each on their Narrow sides are welded together.
  • the pipe shells have a sheet thickness of about 0.3mm to 0.4mm.
  • the tabs (32) have approximately the same strength and a length of about ten times their sheet thickness. You run from one narrowest point where they are about 1.2mm apart, apart at an angle of 40 °.
  • the height of the tabs (32) is about a quarter to a third of the total amount of the flat tubes.
  • the tube halves (10 ') are provided with slots, into which the tabs (32) are inserted and then with the pipe halves (10 ') are welded.
  • the tabs (32) on their the tube halves (10 ') facing side with one or more ridges be provided so that they with the known stud welding technology are welded to the tube halves (10 '), so that the sealing welding is omitted.
  • the tabs (32) of the two tube halves are opposite one another arranged.
  • the tabs (32) of the two tube halves (10 ') are arranged off-center such that the tabs (32) the upper tube and the lower tube (10 ') are offset to one another in the transverse direction.
  • the distance the tabs (32) in the flow direction of the exhaust gas is approximately 30mm.
  • a component which is a folded Sheet metal part (34), which forms pairs of tabs (35).
  • This Component (34) can be in the area of the tabs (35) connecting Webs by means of spot welding on the tube halves (10 ') be attached. This also eliminates sealing welding.
  • the one connecting the tabs (35) Web of the component (34) with beveled to the opposite side Straps are provided in the slots of the tube half (10 ') are inserted and welded and the outside protrude to spacers to the adjacent rectangular tubes (10) form.
  • FIG. 6 shows an embodiment of rectangular tubes, the two in the longitudinal direction in the area of the larger Walls divided tube halves (36) are formed.
  • a metal sheet (37) is inserted into both tube halves (36) S-shaped and Z-shaped, successive sections deformed is.
  • Each parallel to the longer walls of the tube half (36) trending parts are with pairs of tabs (38) provided, which correspond to the explanations for Fig. 3a and 3b are arranged and formed.
  • the Pipe Halves (36) are by laser welding or micro TIG welding with each other connected, the inserted sheet (37) with the help a weld-through is fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust Silencers (AREA)
EP96115729A 1995-11-01 1996-10-01 Wärmeübertrager zum Kühlen von Abgas Expired - Lifetime EP0772018B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19540683A DE19540683A1 (de) 1995-11-01 1995-11-01 Wärmeüberträger zum Kühlen von Abgas
DE19540683 1995-11-01

Publications (3)

Publication Number Publication Date
EP0772018A2 EP0772018A2 (de) 1997-05-07
EP0772018A3 EP0772018A3 (de) 1998-07-29
EP0772018B1 true EP0772018B1 (de) 2001-02-28

Family

ID=7776346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115729A Expired - Lifetime EP0772018B1 (de) 1995-11-01 1996-10-01 Wärmeübertrager zum Kühlen von Abgas

Country Status (6)

Country Link
US (2) US6944947B1 (ja)
EP (1) EP0772018B1 (ja)
JP (1) JP3429143B2 (ja)
BR (1) BR9605398A (ja)
DE (2) DE19540683A1 (ja)
ES (1) ES2154375T3 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7055586B2 (en) 2001-05-25 2006-06-06 Maruyasu Industries Co., Ltd. Multitubular heat exchanger
US7240723B2 (en) 2003-09-30 2007-07-10 Dana Canada Corporation Tube bundle heat exchanger comprising tubes with expanded sections

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DE19654368B4 (de) 1996-12-24 2006-01-05 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Abgaswärmeübertrager
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DE19654366B4 (de) * 1996-12-24 2005-10-20 Behr Gmbh & Co Kg Strömungskanal, insbesondere für einen Abgaswärmeübertrager
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DE19907163C2 (de) * 1998-04-24 2003-08-14 Behr Gmbh & Co Wärmetauscher, insbesondere Abgaswärmetauscher
JP4130512B2 (ja) 1998-04-24 2008-08-06 ベール ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー 熱交換器
DE19955939A1 (de) 1999-11-20 2001-05-23 Volkswagen Ag Wärmetauscher zur Kühlung von Abgasen und ein Verfahren zur Herstellung eines Rohrs für einen Wärmetauscher
DE19962863B4 (de) * 1999-12-24 2013-09-19 Behr Gmbh & Co. Kg Wärmeübertrager
DE10127084B4 (de) * 2000-06-17 2019-05-29 Mahle International Gmbh Wärmeübertrager, insbesondere für Kraftfahrzeuge
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US7077190B2 (en) 2001-07-10 2006-07-18 Denso Corporation Exhaust gas heat exchanger
JP4115390B2 (ja) * 2001-08-10 2008-07-09 よこはまティーエルオー株式会社 伝熱装置
DE10144827A1 (de) * 2001-09-12 2003-03-27 Behr Gmbh & Co Abgaswärmeübertrager
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DE10311716A1 (de) 2003-03-17 2004-10-14 Evotec Oai Ag Verfahren und Vorrichtung zur Trennung von Partikeln in einer Flüssigkeitsströmung
DE10328638A1 (de) 2003-06-26 2005-01-20 Modine Manufacturing Co., Racine Wärmetauscher in gehäuseloser Plattenbauweise
US7481040B2 (en) 2003-09-18 2009-01-27 Behr Gmbh & Co. Kg Exhaust-gas heat exchanger, in particular exhaust-gas cooler for exhaust gas recirculation in motor vehicles
EP1682842B1 (de) * 2003-10-28 2014-06-04 Behr GmbH & Co. KG Strömungskanal für einen wärmeübertrager und wärmeübertrager mit derartigen strömungskanälen
JP4614266B2 (ja) * 2004-07-23 2011-01-19 臼井国際産業株式会社 流体攪拌用フィン並びに該フィンを内装した伝熱管および熱交換器または熱交換型ガス冷却装置
DE102005014385A1 (de) * 2005-03-24 2006-09-28 Emitec Gesellschaft Für Emissionstechnologie Mbh Abgaswärmeübertrager, insbesondere Abgaskühler für Abgasrückführung in Kraftfahrzeugen
JP2008534834A (ja) 2005-03-24 2008-08-28 ベール ゲーエムベーハー ウント コー カーゲー 排気熱交換器、特に自動車内の排気再循環用排気冷却器
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DE112019006640T5 (de) * 2019-01-10 2021-10-07 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Motor und inverter-integrierte rotierbare elektrische maschine
US11566855B2 (en) * 2019-08-09 2023-01-31 Mikutay Corporation Tube and chamber heat exchange apparatus having a medium directing assembly with enhanced medium directing panels
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7055586B2 (en) 2001-05-25 2006-06-06 Maruyasu Industries Co., Ltd. Multitubular heat exchanger
US7240723B2 (en) 2003-09-30 2007-07-10 Dana Canada Corporation Tube bundle heat exchanger comprising tubes with expanded sections

Also Published As

Publication number Publication date
JP3429143B2 (ja) 2003-07-22
DE19540683A1 (de) 1997-05-07
US20050189095A1 (en) 2005-09-01
EP0772018A3 (de) 1998-07-29
EP0772018A2 (de) 1997-05-07
US7246437B2 (en) 2007-07-24
US6944947B1 (en) 2005-09-20
DE59606495D1 (de) 2001-04-05
JPH09170891A (ja) 1997-06-30
BR9605398A (pt) 1998-07-28
ES2154375T3 (es) 2001-04-01

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