EP2136174A2 - Exhaust gas heat exchanger - Google Patents

Exhaust gas heat exchanger Download PDF

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Publication number
EP2136174A2
EP2136174A2 EP09007732A EP09007732A EP2136174A2 EP 2136174 A2 EP2136174 A2 EP 2136174A2 EP 09007732 A EP09007732 A EP 09007732A EP 09007732 A EP09007732 A EP 09007732A EP 2136174 A2 EP2136174 A2 EP 2136174A2
Authority
EP
European Patent Office
Prior art keywords
beads
heat exchanger
bead
side wall
exchanger 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.)
Granted
Application number
EP09007732A
Other languages
German (de)
French (fr)
Other versions
EP2136174B1 (en
EP2136174A3 (en
Inventor
Andreas Roth
Christoph Lempa
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Priority to EP17186705.4A priority Critical patent/EP3270083B1/en
Publication of EP2136174A2 publication Critical patent/EP2136174A2/en
Publication of EP2136174A3 publication Critical patent/EP2136174A3/en
Application granted granted Critical
Publication of EP2136174B1 publication Critical patent/EP2136174B1/en
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Anticipated expiration legal-status Critical

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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
    • 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
    • F28D7/10—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 one within the other, e.g. concentrically
    • F28D7/106—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 one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • 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
    • 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
    • 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
    • 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
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • 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
    • F28F2225/00—Reinforcing means
    • F28F2225/02—Reinforcing means for casings

Definitions

  • the invention relates to an exhaust gas heat exchanger with a jacket tube made of sheet steel according to the features in the preamble of claim 1.
  • Such an exhaust gas heat exchanger is used in engine construction.
  • the jacket tube which is referred to in professional circles as a cooling cassette, formed from a partitioned off from a rectangular tube length portion. Due to the predetermined cross-sectional shape of the rectangular tube, the practice is therefore bound to it and consequently limited in terms of the available installation space. Furthermore, due to the tubular shape, the range of variation for the definition of connections and / or attachments is naturally limited.
  • the invention has for its object to provide an exhaust gas heat exchanger with a jacket tube, both in terms of its design as Also with regard to connections and / or attachments can be flexibly adapted to the available installation space.
  • the jacket tube of the exhaust gas heat exchanger is formed from a board, which is punched according to the desired specifications, then formed into a polygonal tube and then longitudinally welded.
  • a jacket tube it is now readily possible to produce a deviating from the rectangular cross-section geometry.
  • a trapezoidal or approximately trapezoidal cross section is conceivable.
  • a longitudinally stepped casing tube can be produced, whereby an even better adaptation to the respective available installation space is possible.
  • the invention provides the prerequisites that measures can already be taken on the board to be punched to provide connections or attachments without significant design effort on the finished jacket pipe.
  • the jacket tube forms the housing of the exhaust gas heat exchanger.
  • the heat exchange itself takes place in the space enclosed by the jacket tube interior, so that the jacket tube itself does not participate in the heat exchange.
  • casing pipe and the name cooling cassette is common because exhaust gases are cooled within the designed in cassette exhaust heat exchanger.
  • the features of claim 2 provide that at least one side wall of the jacket tube is provided with beads.
  • the introduction of the beads is done before forming the board to a polygonal pipe.
  • at least two opposing side walls of the jacket tube provided with preferably embossed from the inside outward beads (claim 5). Due to the jacket tube reinforcing beads can be met with such a jacket pipe requirements of practice, after which the jacket tube must withstand a required bursting pressure of eg 5 bar.
  • the production of the beads prepares the punching of the board no significant manufacturing problems.
  • a particularly advantageous embodiment of the arrangement of beads is achieved within the scope of the features of claim 2.
  • S-bead S-shaped curve
  • the S-bead has concave end portions toward the central longitudinal line of the sidewall.
  • open C-shaped beads C-beads
  • Between the end sections of the S-bead and the C-beads are located in the region of the center longitudinal line lying round beads (round beads) and in the area of the central transverse line of the side wall next to a diagonal leg of the S-bead arranged triangular beads (triangular beads). All beads are embossed from the inside out.
  • Such a bead image thus extends over the entire surface of a side wall and increases the rigidity of the jacket tube to a substantial extent.
  • all beads are embossed from the inside to the outside.
  • the features of claim 8 provide that the jacket tube is made of stainless steel sheet, aluminum sheet or plastic.
  • openings are provided in a preferably bead-free side wall of the jacket tube. These openings are preferably used to connect pipes for feeding and discharging, in particular a coolant.
  • FIGS. 1 to 3 denotes a jacket tube of an otherwise not illustrated exhaust gas heat exchanger.
  • the jacket tube 1 has a rectangular cross-section.
  • Two mutually opposite side walls 2 of the jacket tube 1 have in an identical configuration a below explained in more detail Sickenchan 3 for stiffening the jacket tube 1, while the other two side walls 4 designed without a sicken are.
  • the side walls 2, 4 are connected to each other via rounded longitudinal edges 18.
  • S-bead 5 extends over each side wall 2 in an oblique orientation an S-shaped bead 5 (hereinafter referred to as S-bead 5).
  • the S-bead 5 has a central diagonal leg 6 and in the direction of the central longitudinal line MLL of the side wall 2 opposite concave curved end portions 7. Due to the concave design of the end portions 7 short end legs 8 are formed, which are directed to the central longitudinal line MLL out.
  • the central transverse line MQL of the side wall 2 of the diagonal leg 6 of the S-bead 5 is provided with a circular extension 9. The lying next to the extension 9 longitudinal portions 10 of the diagonal leg 6 widen in the direction of the concave end portions. 7
  • C-shaped beads 11 are arranged toward the end sections 7 (referred to below as C-beads 11 for short).
  • One leg 12 of the C-beads 11 extends parallel to the diagonal leg 6 of the S-bead 5, while the other leg 13 is directed to the short leg 8 of the end portions 7 of the S-bead 5 out.
  • the webs 14 of the C-beads 11 between the end legs 12, 13 are formed widened in the middle length ranges.
  • triangular shaped beads 16 are provided (referred to below as triangle triangles 16), each of which faces the extensions 9 with one corner 17 each.
  • the corners 17 remote from the sides 27 extend parallel to the Longitudinal edge 4.
  • the triangular pitches 16 may be formed on the same side or on opposite sides.
  • the cross section is designed approximately trapezoidal.
  • Two side walls 20, 21 extend parallel to one another, while a third side wall 22 is arranged at right angles to the two side walls 20, 21 lying parallel to one another.
  • the fourth side wall 23 extends obliquely to the side walls 20, 21st
  • the mutually parallel side walls 20, 21 are provided with bead images 3, which like the bead images 3 in the side walls 2 of the casing tube 1 according to the FIGS. 1 to 3 are formed. A repeated explanation is therefore unnecessary.
  • openings 24, 25 are provided in one end region.
  • a rectangular opening 24 is provided, while in the other end region is a round opening 25, which is provided with a passage 26 to the outside.

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

Abstract

The exchanger has a tubular cooling cartridge (1) having side walls (2) provided with S-shaped seams extended diagonally over the side walls. The seams cut a central longitudinal line (MLL) of the side walls. Concave end sections of the seams are arranged adjacent a central longitudinal axis of the side wall. Round seams (15) lie between end sections of the S-shaped seams, and C-shaped seams (11) is provided in the central longitudinal line and triangular seams (16) is arranged in a central traverse line (MQL) of the side wall adjacent to a diagonal side piece (6) of the S-shaped seams.

Description

Die Erfindung betrifft einen Abgaswärmetauscher mit einem Mantelrohr aus Stahlblech gemäß den Merkmalen im Oberbegriff des Anspruchs 1.The invention relates to an exhaust gas heat exchanger with a jacket tube made of sheet steel according to the features in the preamble of claim 1.

Ein derartiger Abgaswärmetauscher wird im Motorenbau eingesetzt. Bei einem bekannten Abgaswärmetauscher wird das Mantelrohr, das in Fachkreisen auch als Kühlkassette bezeichnet wird, aus einem von einem Rechteckrohr abgeteilten Längenabschnitt gebildet. Aufgrund der vorgegebenen Querschnittsform des Rechteckrohrs ist die Praxis mithin hieran gebunden und folglich hinsichtlich des zur Verfügung stehenden Einbauraums eingeschränkt. Ferner ist auf Grund der Rohrform die Variationsbreite für die Festlegung von Anschlüssen und/ oder Anbauteilen naturgemäß eingeschränkt.Such an exhaust gas heat exchanger is used in engine construction. In a known exhaust gas heat exchanger, the jacket tube, which is referred to in professional circles as a cooling cassette, formed from a partitioned off from a rectangular tube length portion. Due to the predetermined cross-sectional shape of the rectangular tube, the practice is therefore bound to it and consequently limited in terms of the available installation space. Furthermore, due to the tubular shape, the range of variation for the definition of connections and / or attachments is naturally limited.

Der Erfindung liegt die Aufgabe zugrunde, einen Abgaswärmetauscher mit einem Mantelrohr zu schaffen, das sowohl hinsichtlich seiner Ausgestaltung als auch im Hinblick auf Anschlüsse und/ oder Anbauteile flexibler an den zur Verfügung stehenden Einbauraum angepasst werden kann.The invention has for its object to provide an exhaust gas heat exchanger with a jacket tube, both in terms of its design as Also with regard to connections and / or attachments can be flexibly adapted to the available installation space.

Die Lösung dieser Aufgabe wird nach der Erfindung in den Merkmalen des Anspruchs 1 gesehen.The solution of this problem is seen according to the invention in the features of claim 1.

Das Mantelrohr des Abgaswärmetauschers wird aus einer Platine gebildet, die entsprechend den gewünschten Vorgaben gestanzt, anschließend zu einem mehrkantigen Rohr umgeformt und dann längsnahtgeschweißt wird. Bei einem derartigen Mantelrohr ist es nunmehr ohne weiteres möglich, eine vom rechteckigen Querschnitt abweichende Geometrie zu fertigen. So ist zum Beispiel ein trapezförmiger beziehungsweise annähernd trapezförmiger Querschnitt denkbar. Darüber hinaus kann ein in Längsrichtung gestuftes Mantelrohr hergestellt werden, wodurch eine noch bessere Anpassung an den jeweils zur Verfügung stehenden Einbauraum möglich ist. Ferner schafft die Erfindung die Vorausetzungen dafür, dass bereits an der zu stanzenden Platine Maßnahmen getroffen werden können, um ohne wesentlichen konstruktiven Aufwand an dem fertig gestellten Mantelrohr Anschlüsse oder Anbauteile vorzusehen.The jacket tube of the exhaust gas heat exchanger is formed from a board, which is punched according to the desired specifications, then formed into a polygonal tube and then longitudinally welded. In such a jacket tube, it is now readily possible to produce a deviating from the rectangular cross-section geometry. For example, a trapezoidal or approximately trapezoidal cross section is conceivable. In addition, a longitudinally stepped casing tube can be produced, whereby an even better adaptation to the respective available installation space is possible. Furthermore, the invention provides the prerequisites that measures can already be taken on the board to be punched to provide connections or attachments without significant design effort on the finished jacket pipe.

Das Mantelrohr bildet das Gehäuse des Abgaswärmetauschers. Der Wärmetausch selbst findet in dem von dem Mantelrohr umschlossenen Innenraum statt, so dass das Mantelrohr selbst am Wärmetausch nicht teilnimmt. Anstelle des Begriffs Mantelrohr ist auch die Bezeichnung Kühlkassette üblich, da Abgase innerhalb des in Kassettenbauweise ausgestalteten Abgaswärmetauschers gekühlt werden.The jacket tube forms the housing of the exhaust gas heat exchanger. The heat exchange itself takes place in the space enclosed by the jacket tube interior, so that the jacket tube itself does not participate in the heat exchange. Instead of the term casing pipe and the name cooling cassette is common because exhaust gases are cooled within the designed in cassette exhaust heat exchanger.

In vorteilhafter Ausgestaltung des erfindungsgemäßen Grundgedankens sehen die Merkmale des Anspruchs 2 vor, dass wenigstens eine Seitenwand des Mantelrohrs mit Sicken versehen ist. Das Einbringen der Sicken erfolgt vor dem Umformen der Platine zu einem mehrkantigen Rohr. Insbesondere sind mindestens zwei einander gegenüberliegende Seitenwände des Mantelrohrs mit vorzugsweise von innen nach außen geprägten Sicken versehen (Patentanspruch 5). Aufgrund der das Mantelrohr verstärkenden Sicken können mit einem solchen Mantelrohr die Anforderungen der Praxis eingehalten werden, wonach das Mantelrohr einem geforderten Berstdruck von z.B. 5 bar standhalten muss. Die Herstellung der Sicken bereitet beim Stanzen der Platine keine wesentlichen fertigungstechnischen Probleme.In an advantageous embodiment of the inventive concept, the features of claim 2 provide that at least one side wall of the jacket tube is provided with beads. The introduction of the beads is done before forming the board to a polygonal pipe. In particular, at least two opposing side walls of the jacket tube provided with preferably embossed from the inside outward beads (claim 5). Due to the jacket tube reinforcing beads can be met with such a jacket pipe requirements of practice, after which the jacket tube must withstand a required bursting pressure of eg 5 bar. The production of the beads prepares the punching of the board no significant manufacturing problems.

Eine besonders vorteilhafte Ausführungsform der Anordnung von Sicken wird im Umfang der Merkmale des Anspruchs 2 erzielt. Danach sind mindestens zwei einander gegenüberliegende Seitenwände des Mantelrohrs mit jeweils einer sich schräg über eine Seitenwand erstreckenden Sicke mit S-förmigen Verlauf (S-Sicke) versehen. Die S-Sicke weist zur Mittellängslinie der Seitenwand hin konkave Endabschnitte auf. Ferner sind zu diesen Endabschnitten hin offene C-förmigen Sicken (C-Sicken) vorgesehen. Zwischen den Endabschnitten der S-Sicke und den C-Sicken befinden sich im Bereich der in Mittellängslinie liegenden runde Sicken (Rundsicken) und in im Bereich der Mittelquerlinie der Seitenwand neben einem Diagonalschenkel der S-Sicke angeordneten dreieckförmige Sicken (Dreiecksicken). Alle Sicken sind von innen nach außen geprägt. Ein derartiges Sickenbild erstreckt sich mithin über die komplette Fläche einer Seitenwand und erhöht die Steifigkeit des Mantelrohrs in einem wesentlichen Umfang. Vorzugsweise sind alle Sicken von innen nach außen geprägt.A particularly advantageous embodiment of the arrangement of beads is achieved within the scope of the features of claim 2. Thereafter, at least two opposing side walls of the jacket tube, each with an obliquely extending over a side wall bead with S-shaped curve (S-bead) provided. The S-bead has concave end portions toward the central longitudinal line of the sidewall. Furthermore, open C-shaped beads (C-beads) are provided to these end portions. Between the end sections of the S-bead and the C-beads are located in the region of the center longitudinal line lying round beads (round beads) and in the area of the central transverse line of the side wall next to a diagonal leg of the S-bead arranged triangular beads (triangular beads). All beads are embossed from the inside out. Such a bead image thus extends over the entire surface of a side wall and increases the rigidity of the jacket tube to a substantial extent. Preferably, all beads are embossed from the inside to the outside.

Die Bereiche neben den Diagonalschenkein der S-Sicken werden entsprechend Anspruch 6 dadurch flächenmäßig besser ausgenutzt, dass die Dreiecksicken mit jeweils einer Ecke einander zugewandt sind.The areas next to the Diagonalschenkein the S-beads are exploited in terms of area better in terms of claim that the triangular corners are each facing a corner to each other.

Eine zusätzliche Versteifung des Mantelrohrs wird mit den Merkmalen des Anspruchs 7 erreicht. Danach sind die Diagonalschenkel der S-Sicken im Bereich der Mittelquerlinie der Seitenwände jeweils mit einer insbesondere kreisförmigen Erweiterung versehen. Diese kreisförmigen Erweiterungen können bei Bedarf zur Anbringung eines Logos genutzt werden.An additional stiffening of the jacket tube is achieved with the features of claim 7. Thereafter, the diagonal legs of the S-beads in the region of the central transverse line of the side walls are each provided with a particular circular extension. If required, these circular extensions can be used to attach a logo.

Um die Dicke der Seitenwände des Mantelrohrs so gering wie möglich zu halten bei gleichzeitiger Sicherheit gegen einen hohen Innendruck sehen die Merkmale des Anspruchs 8 vor, dass das Mantelrohr aus Edelstahlblech, Aluminiumblech oder auch aus Kunststoff gebildet ist.In order to keep the thickness of the side walls of the jacket tube as low as possible while maintaining security against a high internal pressure, the features of claim 8 provide that the jacket tube is made of stainless steel sheet, aluminum sheet or plastic.

Schließlich ist es gemäß den Merkmalen des Anspruchs 9 noch von Vorteil, dass in einer vorzugsweise sickenfreien Seitenwand des Mantelrohrs Öffnungen vorgesehen sind. Diese Öffnungen dienen bevorzugt dem Anschluss von Rohren zur Zu- und Abführung insbesondere eines Kühlmittels.Finally, it is according to the features of claim 9 still advantageous that openings are provided in a preferably bead-free side wall of the jacket tube. These openings are preferably used to connect pipes for feeding and discharging, in particular a coolant.

Die Erfindung ist nachfolgend anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

Figur 1
in der Perspektive ein Mantelrohr eines Abgaswärmetauschers;
Figur 2
eine Seitenansicht des Mantelrohrs der Figur 1;
Figur 3
eine Draufsicht auf das Mantelrohr der Figur 2 in Richtung des Pfeils III gesehen;
Figur 4
in der Perspektive eine weitere Ausführungsform eines Mantelrohrs für einen Abgaswärmetauscher und
Figur 5
eine Stirnansicht des Mantelrohrs der Figur 4 in Richtung des Pfeils V gesehen.
The invention is explained in more detail with reference to exemplary embodiments illustrated in the drawings. Show it:
FIG. 1
in perspective, a jacket pipe of an exhaust gas heat exchanger;
FIG. 2
a side view of the jacket tube of FIG. 1 ;
FIG. 3
a plan view of the casing tube of FIG. 2 seen in the direction of arrow III;
FIG. 4
in perspective, another embodiment of a jacket tube for an exhaust gas heat exchanger and
FIG. 5
an end view of the casing tube of FIG. 4 seen in the direction of arrow V.

Mit 1 ist in den Figuren 1 bis 3 ein Mantelrohr eines ansonsten nicht näher veranschaulichten Abgaswärmetauschers bezeichnet. Das Mantelrohr 1 weist einen rechteckförmigen Querschnitt auf. Zwei einander gegenüberliegende Seitenwände 2 des Mantelrohrs 1 besitzen in identischer Konfiguration ein nachfolgend noch näher erläutertes Sickenbild 3 zur Versteifung des Mantelrohrs 1, während die beiden anderen Seitenwände 4 sickenlos gestaltet sind. Die Seitenwände 2, 4 sind über gerundete Längskanten 18 miteinander verbunden.With 1 is in the FIGS. 1 to 3 denotes a jacket tube of an otherwise not illustrated exhaust gas heat exchanger. The jacket tube 1 has a rectangular cross-section. Two mutually opposite side walls 2 of the jacket tube 1 have in an identical configuration a below explained in more detail Sickenbild 3 for stiffening the jacket tube 1, while the other two side walls 4 designed without a sicken are. The side walls 2, 4 are connected to each other via rounded longitudinal edges 18.

Wie insbesondere die Figur 2 erkennen lässt, erstreckt sich über jede Seitenwand 2 in schräger Ausrichtung eine S-förmig ausgebildete Sicke 5 (nachfolgend kurz S-Sicke 5 genannt). Die S-Sicke 5 besitzt einen mittleren Diagonalschenkel 6 sowie in Richtung zur Mittellängslinie MLL der Seitenwand 2 gegengleich konkav gekrümmte Endabschnitte 7. Aufgrund der konkaven Gestaltung der Endabschnitte 7 werden kurze Endschenkel 8 gebildet, die zur Mittellängslinie MLL hin gerichtet sind. In der Mittelquerlinie MQL der Seitenwand 2 ist der Diagonalschenkel 6 der S-Sicke 5 mit einer kreisförmigen Erweiterung 9 versehen. Die neben der Erweiterung 9 liegenden Längenabschnitte 10 des Diagonalschenkels 6 verbreitern sich in Richtung zu den konkav verlaufenden Endabschnitten 7.How the particular FIG. 2 can be seen, extends over each side wall 2 in an oblique orientation an S-shaped bead 5 (hereinafter referred to as S-bead 5). The S-bead 5 has a central diagonal leg 6 and in the direction of the central longitudinal line MLL of the side wall 2 opposite concave curved end portions 7. Due to the concave design of the end portions 7 short end legs 8 are formed, which are directed to the central longitudinal line MLL out. In the central transverse line MQL of the side wall 2 of the diagonal leg 6 of the S-bead 5 is provided with a circular extension 9. The lying next to the extension 9 longitudinal portions 10 of the diagonal leg 6 widen in the direction of the concave end portions. 7

Neben den konkav gekrümmten Endabschnitten 7 der S-Sicke 5 sind zu den Endabschnitten 7 hin offene, C-förmig ausgebildete Sicken 11 angeordnet (nachfolgend kurz C-Sicken 11 genannt). Ein Schenkel 12 der C-Sicken 11 verläuft parallel zu dem Diagonalschenkel 6 der S-Sicke 5, während der jeweils andere Schenkel 13 zu dem kurzen Schenkel 8 der Endabschnitte 7 der S-Sicke 5 hin gerichtet ist. Die Stege 14 der C-Sicken 11 zwischen den endseitigen Schenkeln 12, 13 sind in den mittleren Längenbereichen verbreitert ausgebildet.In addition to the concavely curved end sections 7 of the S-bead 5, open, C-shaped beads 11 are arranged toward the end sections 7 (referred to below as C-beads 11 for short). One leg 12 of the C-beads 11 extends parallel to the diagonal leg 6 of the S-bead 5, while the other leg 13 is directed to the short leg 8 of the end portions 7 of the S-bead 5 out. The webs 14 of the C-beads 11 between the end legs 12, 13 are formed widened in the middle length ranges.

Zwischen den Endabschnitten 7 der S-Sicke 5 und den C-Sicken 11 liegen in der Mittellängslinie MLL der Seitenwand 2 kreisrund ausgebildete Sicken 15 (nachfolgend kurz Rundsicken 15 genannt).Between the end portions 7 of the S-bead 5 and the C-beads 11 are in the central longitudinal line MLL of the side wall 2 circularly formed beads 15 (hereinafter called short round beads 15).

Ferner sind im Bereich der Mittelquerlinie MQL der Seitenwände 2 dreieckig gestaltete Sicken 16 vorgesehen (nachfolgend kurz Dreiecksicken 16 genannt), die mit jeweils einer Ecke 17 den Erweiterungen 9 zugewandt sind. Die den Ecken 17 abgewandten Seiten 27 erstrecken sich parallel zu den Längskante 4. Die Dreiecksicken 16 können gleichseitig oder ungleichseitig ausgebildet sein.Furthermore, in the region of the central transverse line MQL of the side walls 2, triangular shaped beads 16 are provided (referred to below as triangle triangles 16), each of which faces the extensions 9 with one corner 17 each. The corners 17 remote from the sides 27 extend parallel to the Longitudinal edge 4. The triangular pitches 16 may be formed on the same side or on opposite sides.

Es ist insbesondere aus der Figur 3 zu erkennen, dass alle Sicken 5, 11, 15 und 16 von innen nach außen geprägt sind. Hierbei weisen die S-Sicken 5 und die C-Sicken 11 halbrunde Querschnitte auf, während die Rundsicken 15 und die Dreiecksicken 16 gerundete Übergänge 19 zu den Seitenwänden 2 besitzen.It is in particular from the FIG. 3 to recognize that all beads 5, 11, 15 and 16 are marked from the inside out. In this case, the S-beads 5 and the C-beads 11 have semicircular cross-sections, while the round beads 15 and the triangular beads 16 have rounded transitions 19 to the side walls 2.

Bei der Ausführungsform eines Mantelrohrs 1a gemäß den Figuren 4 und 5 ist der Querschnitt annähernd trapezförmig gestaltet. Zwei Seitenwände 20, 21 erstrecken sich parallel zueinander, während eine dritte Seitenwand 22 im rechten Winkel zu den beiden parallel zueinander liegenden Seitenwänden 20, 21 angeordnet ist. Die vierte Seitenwand 23 verläuft schräg zu den Seitenwänden 20, 21.In the embodiment of a jacket tube 1a according to the FIGS. 4 and 5 the cross section is designed approximately trapezoidal. Two side walls 20, 21 extend parallel to one another, while a third side wall 22 is arranged at right angles to the two side walls 20, 21 lying parallel to one another. The fourth side wall 23 extends obliquely to the side walls 20, 21st

Die parallel zueinander angeordneten Seitenwände 20, 21 sind mit Sickenbildern 3 versehen, die wie die Sickenbilder 3 in den Seitenwänden 2 des Mantelrohrs 1 gemäß den Figuren 1 bis 3 ausgebildet sind. Eine nochmalige Erläuterung ist daher entbehrlich.The mutually parallel side walls 20, 21 are provided with bead images 3, which like the bead images 3 in the side walls 2 of the casing tube 1 according to the FIGS. 1 to 3 are formed. A repeated explanation is therefore unnecessary.

Außerdem ist aus den Figuren 4 und 5 noch zu erkennen, dass in den Endbereichen der sich zu den beiden parallel zu einander verlaufenden Seitenwänden 20, 21 rechtwinklig erstreckenden Seitenwand 22 Öffnungen 24, 25 vorgesehen sind. In einem Endbereich ist eine Rechtecköffnung 24 vorgesehen, während sich in dem anderen Endbereich eine runde Öffnung 25 befindet, die nach außen hin mit einem Durchzug 26 versehen ist.Moreover, from the FIGS. 4 and 5 to recognize that in the end regions of the two parallel to each other extending side walls 20, 21 at right angles extending side wall 22 openings 24, 25 are provided. In one end region, a rectangular opening 24 is provided, while in the other end region is a round opening 25, which is provided with a passage 26 to the outside.

Auch bei der Ausführungsform eines Mantelrohrs 1 gemäß den Figuren 1 bis 3 können zum Beispiel in einer Seitenwand 4 Öffnungen 24, 25 gemäß den Figuren 4 und 5 vorgesehen sein.Also in the embodiment of a jacket tube 1 according to the FIGS. 1 to 3 For example, in a side wall 4 openings 24, 25 according to the FIGS. 4 and 5 be provided.

Bezugszeichen:Reference numerals:

1 -1 -
Mantelrohr
1a - Mantelrohrcasing pipe
1a - jacket pipe
2 -2 -
Seitenwände v. 1Sidewalls v. 1
3 -3 -
Sickenbild an 2, 20, 21Beading picture on 2, 20, 21
4 -4 -
Seitenwände v. 1Sidewalls v. 1
5 -5 -
S-Sicke v. 3S-beading v. 3
6 -6 -
Diagonalschenkel v. 5Diagonal leg v. 5
7 -7 -
Endabschnitte v. 5End sections v. 5
8-8th-
Endschenkel v. 7End leg v. 7
9 -9 -
Erweiterung v. 6Extension v. 6
10 -10 -
Längenabschnitte v. 6Length sections v. 6
11 -11 -
C-Sicken v. 3C-beads v. 3
12-12-
Schenkel v. 11Thighs v. 11
13 -13 -
Schenkel v. 11Thighs v. 11
14 -14 -
Steg v. 11Bridge v. 11
15 -15 -
Rundsicken v. 3Round beads v. 3
16 -16 -
Dreiecksicken v. 3Triangular v. 3
17 -17 -
Ecken v. 16Corners v. 16
18 -18 -
Längskanten v. 1, 1aLongitudinal edges v. 1, 1a
19 -19 -
Übergänge v. 15, 16 auf 2Transitions v. 15, 16 on 2
20 -20 -
Seitenwand v. 1aSidewall v. 1a
21 -21 -
Seitenwand v. 1aSidewall v. 1a
22 -22 -
Seitenwand v. 1aSidewall v. 1a
23 -23 -
Seitenwand v. 1aSidewall v. 1a
24 -24 -
Öffnung in 22Opening in 22
25 -25 -
Öffnung in 22Opening in 22
26 -26 -
Durchzug an 25Passage at 25
27 -27 -
Längsseiten v. 16Long sides v. 16
MLL -MLL -
Mittellängslinie v. 2Mid-line v. 2
MQL -MQL -
Mittelquerlinie v. 2Middle transverse line v. 2

Claims (9)

Abgaswärmetauscher mit einem rohrförmigen Mantelrohr (1, 1a) aus Stahlblech, dadurch gekennzeichnet, dass das Mantelrohr (1, 1a) aus einer gestanzten, zu einem mehrkantigen Rohr umgeformten und längsnahtgeschweißten Platine gebildet ist.Exhaust gas heat exchanger with a tubular casing pipe (1, 1a) made of sheet steel, characterized in that the casing tube (1, 1a) is formed from a stamped, formed into a polygonal tube and longitudinally welded blank. Abgaswärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens eine Seitenwand (2, 20, 21) des Mantelrohrs (1, 1a) mit Sicken (5, 11, 15, 16) versehen ist.Exhaust heat exchanger according to claim 1, characterized in that at least one side wall (2, 20, 21) of the jacket tube (1, 1a) with beads (5, 11, 15, 16) is provided. Abgaswärmetauscher nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass mindestens zwei einander gegenüberliegende Seitenwände (2, 20, 21) des Mantelrohrs (1, 1a) mit Sicken (5, 11, 15, 16) versehen sind.Exhaust gas heat exchanger according to one of claims 1 or 2, characterized in that at least two mutually opposite side walls (2, 20, 21) of the jacket tube (1, 1a) with beads (5, 11, 15, 16) are provided. Abgaswärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass mindestens zwei einander gegenüberliegende Seitenwände (2, 20, 21) des Mantelrohrs (1, 1a) mit jeweils einer sich schräg über eine Seitenwand (2, 20, 21) erstreckenden Sicke mit S-förmigen Verlauf (S-Sicke) (5) versehen sind, wobei die S-Sicke (5) eine Mittellängslinie (MLL) der Seitenwand (2, 20, 21) schneidet, wobei neben zur Mittellängslinie (MLL) der Seitenwand (2, 20, 21) hin konkaven Endabschnitten (7) der S-Sicke (5) zu den Endabschnitten (7) hin offene C-Sicken (11) angeordnet sind, wobei zwischen den Endabschnitten (7) der S-Sicke (5) und den C-Sicken (11) in der Mittellängslinie (MLL) liegende Rundsicken (15) und in der Mittelquerlinie (MQL) der Seitenwand (2, 20, 21) neben einem Diagonalschenkel (6) der S-Sicke (5) angeordnete Dreiecksicken (16) vorgesehen sind.Exhaust heat exchanger according to one of claims 1 to 3, characterized in that at least two mutually opposite side walls (2, 20, 21) of the jacket tube (1, 1 a), each with an obliquely via a side wall (2, 20, 21) extending bead with S-shaped curve (S-bead) (5) are provided, wherein the S-bead (5) a central longitudinal line (MLL) of the side wall (2, 20, 21) intersects, wherein in addition to the central longitudinal line (MLL) of the side wall (2 , 20, 21) towards concave end portions (7) of the S-bead (5) to the end portions (7) towards open C-beads (11) are arranged, wherein between the end portions (7) of the S-bead (5) and C-beads (11) in the middle longitudinal line (MLL) lying round beads (15) and in the central transverse line (MQL) of the side wall (2, 20, 21) next to a diagonal leg (6) of the S-bead (5) arranged triangular beads ( 16) are provided. Abgaswärmetauscher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass alle Sicken (5, 11, 15, 16) von innen nach außen geprägt sind.Exhaust heat exchanger according to one of claims 1 to 4, characterized in that all the beads (5, 11, 15, 16) are embossed from the inside to the outside. Abgaswärmetauscher nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Dreiecksicken (16) mit jeweils einer Ecke (17) einander zugewandt sind.Exhaust gas heat exchanger according to claim 4 or 5, characterized in that the triangular beads (16) are each facing a corner (17) facing each other. Abgaswärmetauscher nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Diagonalschenkel (6) der S-Sicken (5) im Bereich der Mittelquerlinie (MQL) der Seitenwände (2, 20, 21) jeweils mit einer kreisförmigen Erweiterung (9) versehen sind.Exhaust gas heat exchanger according to claim 4 or 5, characterized in that the diagonal legs (6) of the S-beads (5) in the region of the central transverse line (MQL) of the side walls (2, 20, 21) are each provided with a circular extension (9). Abgaswärmetauscher nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Mantelrohr (1, 1a) aus Edelstahlblech, Aluminiumblech oder Kunststoff gebildet ist.Exhaust heat exchanger according to one of claims 1 to 7, characterized in that the jacket tube (1, 1a) made of stainless steel sheet, aluminum sheet or plastic is formed. Abgaswärmetauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass in einer Seitenwand (4, 22) des Mantelrohrs (1, 1a) Öffnungen (24, 25) vorgesehen sind.Flue gas heat exchanger according to one of claims 1 to 8, characterized in that openings (24, 25) are provided in a side wall (4, 22) of the jacket tube (1, 1a).
EP09007732.2A 2008-06-16 2009-06-12 Exhaust gas heat exchanger Active EP2136174B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17186705.4A EP3270083B1 (en) 2008-06-16 2009-06-12 Exhaust gas heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008028244A DE102008028244B3 (en) 2008-06-16 2008-06-16 Exhaust gas heat exchanger

Related Child Applications (2)

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EP17186705.4A Division EP3270083B1 (en) 2008-06-16 2009-06-12 Exhaust gas heat exchanger
EP17186705.4A Division-Into EP3270083B1 (en) 2008-06-16 2009-06-12 Exhaust gas heat exchanger

Publications (3)

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EP2136174A2 true EP2136174A2 (en) 2009-12-23
EP2136174A3 EP2136174A3 (en) 2012-12-05
EP2136174B1 EP2136174B1 (en) 2018-03-21

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EP09007732.2A Active EP2136174B1 (en) 2008-06-16 2009-06-12 Exhaust gas heat exchanger

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DE (1) DE102008028244B3 (en)
ES (1) ES2665922T3 (en)
PT (1) PT3270083T (en)

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Publication number Priority date Publication date Assignee Title
DE102010027338B4 (en) * 2010-07-15 2012-04-05 Benteler Automobiltechnik Gmbh Heat exchanger in a motor vehicle
EP3751127B1 (en) * 2019-06-11 2022-01-12 Valeo Systemes Thermiques-THS Exhaust gas re-circulation cooler

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US4391321A (en) * 1979-03-21 1983-07-05 Svante Thunberg Heat exchanger in plants for ventilating rooms or buildings
EP1801407A1 (en) * 2004-09-28 2007-06-27 T.RAD Co,.Ltd Egr cooler
EP1843117A1 (en) * 2005-01-26 2007-10-10 T.RAD Co,.Ltd Heat exchanger
US20060219394A1 (en) * 2005-04-01 2006-10-05 Martin Michael A Stacked-tube heat exchanger
US20070056164A1 (en) * 2005-09-13 2007-03-15 Catacel Corporation Method for making a low-cost high-temperature heat exchanger
DE102006047234A1 (en) * 2005-10-14 2007-04-19 Behr Gmbh & Co. Kg Heat exchanger e.g. for heat exchanger with tubes, has tubes through which medium flows in one direction and between which are arranged guide devices which are connected to tubes and around which further medium flows
EP1788341A1 (en) * 2005-11-18 2007-05-23 Behr GmbH & Co. KG Heat exchanger for a combustion engine
DE102007016282A1 (en) * 2007-03-28 2008-10-02 Modine Manufacturing Co., Racine Heat exchanger and method

Also Published As

Publication number Publication date
EP3270083B1 (en) 2023-10-25
EP3270083A1 (en) 2018-01-17
PT3270083T (en) 2023-12-20
EP2136174B1 (en) 2018-03-21
EP2136174A3 (en) 2012-12-05
ES2665922T3 (en) 2018-04-30
DE102008028244B3 (en) 2009-11-05

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