WO2015185214A1 - Heat exchanger, especially exhaust gas cooler - Google Patents

Heat exchanger, especially exhaust gas cooler Download PDF

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Publication number
WO2015185214A1
WO2015185214A1 PCT/EP2015/001130 EP2015001130W WO2015185214A1 WO 2015185214 A1 WO2015185214 A1 WO 2015185214A1 EP 2015001130 W EP2015001130 W EP 2015001130W WO 2015185214 A1 WO2015185214 A1 WO 2015185214A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
flange
pins
housing
exchanger according
Prior art date
Application number
PCT/EP2015/001130
Other languages
German (de)
French (fr)
Inventor
Predrag Panic
Sabine Dreizler
Martin Derleth
Original Assignee
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 Mahle International Gmbh filed Critical Mahle International Gmbh
Priority to EP15729075.0A priority Critical patent/EP3152508B1/en
Priority to KR1020177000472A priority patent/KR20170020843A/en
Publication of WO2015185214A1 publication Critical patent/WO2015185214A1/en

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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
    • 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
    • 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
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/14—Fastening; Joining by using form fitting connection, e.g. with tongue and groove
    • F28F2275/143—Fastening; Joining by using form fitting connection, e.g. with tongue and groove with pin and hole connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/04—Means for preventing wrong assembling of parts

Definitions

  • Heat exchanger in particular exhaust gas cooler
  • the invention relates to a heat exchanger, in particular exhaust gas cooler of the type specified in the preamble of claim 1.
  • DE 10 2009 050 884 A1 describes an exhaust gas heat exchanger, in particular for a motor vehicle, which comprises at least one diffuser for supplying and / or discharging an exhaust gas flow, an exchanger region and a housing through which a coolant can flow.
  • the exchanger section is formed of a plurality of exchanger tubes extending in axial lease, which are connected at one end to a bottom in a fluid-tight manner.
  • the invention has for its object to provide a heat exchanger of the type mentioned, in which the ground on the flange of the housing simple way is accurately positioned and a relative movement of the soil on the flange is prevented with certainty.
  • the pins are provided diametrically opposite to the opening. As a result, the floor is most effectively fixed against rotation.
  • the pins are surrounded at their foot by a circumferential groove. This avoids burr formation and high notch effect at the transition between the pin attachment and the housing end face (flange surface).
  • the pins are bypassed by the cutter.
  • the pin is not touched during milling.
  • the circumferential groove preferably has a radius of 0.5 mm to 1.5 mm with respect to its cross section. The milling cutter works on the face at a distance of approx. 0.5 mm away from the pin.
  • the pins and the corresponding recesses at least in sections one have elliptical and / or circular and / or angular and / or elongated contour.
  • the pins can, for example, also at the very edge of the flange
  • the pins have a height sufficient to protrude from the ground with the bottom adjacent to the flange.
  • a bottom-mounted diffuser can be accurately positioned by gripping the pins into corresponding openings on the bottom-facing side of the diffuser.
  • the diffuser is centered by means of the pins relative to the housing. This eliminates the need for time consuming interfacing at the end of the production line, saving investment in a dimension control facility.
  • the bottom has a shape adapted to the shape of the flange of the housing. As a result, a large area uniform contact of the soil is achieved on the flange.
  • protrusions or arms with threaded holes arranged therein are provided on an outer edge of the flange, and at the edge of the bottom projections and arms designed in the same way are provided with bores arranged therein.
  • FIG. 1 is a view of a housing flange on a housing of a radiator, in particular exhaust gas heat exchanger,
  • FIG. 2 shows a bottom for receiving the ends of heat exchanger tubes (winglets),
  • FIG. 3 representation of an integrally formed on the housing flange arm with one of the
  • Flange plane protruding pin, 4 shows a section of the housing flange with a corresponding section of the floor
  • FIG. 6 shows a detail of the housing flange according to FIG. 4 with a detail of the bottom and a diffuser shown above, FIG.
  • Fig. 7 is a view of a housing attached to the flange diffuser.
  • Fig. 1 is a view of a flange 1 of a housing 2 of a heat exchanger 3, for example, an exhaust gas cooler shown.
  • the flange 1 surrounds a substantially rectangular opening 4, which forms a shaft for receiving a heat exchanger block comprising a plurality of heat exchanger tubes (winglets).
  • a pin 10 is disposed adjacent to the threaded hole 9, which protrudes perpendicularly from the flange surface of the flange 1.
  • Such a pin 10 is also provided on the left in Fig. 1 arm 7.
  • the pins 10 are located on relative to the flange surface diagonally opposite locations of the flange 1.
  • the pins 10 are cast on the flange 1, d. H. they are generated when casting the housing 2 and do not need to be added later.
  • Fig. 2 shows a bottom 11 with a plurality of openings 12, in which the ends of heat exchanger tubes received and materially connected, in particular welded.
  • the shape of the bottom 11 corresponds to the shape of the flange 1 in Fig. 1 including the projections 6 'and 8' and the arms 7 '. By this shape of the bottom 11 results in a contact surface for bearing the bottom 11 on the flange 1.
  • In the projections 6 ', 8' and arms T are holes or punched holes 13, which are congruent with the threaded holes 9 on the flange 1 (see Fig .. 1).
  • bores 14 or openings are provided, which are suitable with regard to their position and size to receive the pins 10 (cf., Fig. 1), such that the pins 10 fit exactly into the holes 14.
  • Fig. 3 one of the integrally formed on the flange 1 of the housing 2 arms 7 is shown, arranged in the arm 7 threaded bore 9 and the pin 10.
  • the pin 10 has at its foot a circumferential groove 15, which also during casting of the housing 2 is already generated.
  • the circumferential groove preferably has a radius of 0.5 mm with respect to its cross section.
  • FIG. 4 shows that the bottom 11 is fed to the flange 1, which is however only the case when the bottom 11 is equipped with heat exchanger tubes 17, as shown in FIG.
  • both pins 10 shown in Fig. 1 are inserted into the respective opening 14 in the bottom 11, whereby an exact positioning of the bottom 11 takes place on the flange 1.
  • the pins 10 in the openings 14 and a subsequent relative movement of the bottom 11 is prevented from the flange.
  • Fig. 5 it can be seen that the pin 10 protrudes from the bottom plane 11 placed on the flange 1 floor and that the bore 13 is congruent with the threaded hole 9. This ensures that the mounting screws can be reliably inserted during final assembly.
  • FIG. 5 shows that the pin 10 protrudes from the bottom plane 11 placed on the flange 1 floor and that the bore 13 is congruent with the threaded hole 9. This ensures that the mounting screws can be reliably inserted during final assembly.
  • FIG. 6 shows that the heat exchanger tubes 5 or their ends are received in the bottom 11.
  • the block formed from the heat exchanger tubes 5 is inserted into the opening shown in Fig. 1, wherein the bottom 11 comes to rest on the flange 1.
  • the exact positioning of the base 11 on the flange 1 takes place by the insertion of the in particular diametrically arranged pins 10 (see Fig. 1) in the holes 14, because the dimensioning of Pin 10 and bore 14 are selected to preclude relative sliding of the bottom 11 on the flange surface.
  • the exact positioning also ensures that the holes or holes 13 are congruent with the threaded holes 9 and thus covering the threaded holes 9 is excluded. From Fig.
  • a diffuser 16 is placed.
  • This diffuser 16 has, on its surface facing the bottom 11, corresponding openings into which the pins 10 projecting beyond the bottom 11 are inserted, so that the diffuser 16 also assumes a precisely defined position.
  • the diffuser 16 has a shape adapted to the shape of the bottom 11 of a contact surface, on whose outer edge also projections 6 and arms 7 are formed, as is the case on the flange 1 and bottom 11.
  • the projections 6 and arms 7 of the diffuser 16 are also provided with holes 17 which are congruent with the holes 13 on the bottom 11 and the threaded holes 9, so that screws for fixing the diffuser 16 and the fixed bracing of the components 16, 11 and second can be inserted and tightened.
  • Fig. 7 is a view is shown on the overall arrangement, wherein the diffuser 16 is fixed by means of screws 18 on the housing 2. All other reference numerals are identical to those of FIGS. 1 to 6 for the same parts.
  • the shape of the pins 10 can be selected according to the application.
  • the pins and the corresponding recesses have, at least in sections, an elliptical and / or circular and / or angular and / or oblong contour.

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

Abstract

Disclosed is a heat exchanger (3), especially an exhaust gas cooler, comprising a housing (3) with an opening (4) into which a heat exchanger block formed by heat exchanger tubes (5) is inserted, and comprising a base (11) in which ends of the heat exchanger tubes (5) are fluid-tightly accommodated; a flange (1) which surrounds the opening (4) and on which the base (11) comes to rest is formed on the housing (2).

Description

Wärmetauscher, insbesondere Abgaskühler  Heat exchanger, in particular exhaust gas cooler
Die Erfindung betrifft einen Wärmetauscher, insbesondere Abgaskühler der im Oberbegriff des Anspruchs 1 angegebenen Gattung. The invention relates to a heat exchanger, in particular exhaust gas cooler of the type specified in the preamble of claim 1.
In modernen Verbrennungsmotoren wird als Mittel zur Reduzierung der Stickstoff- Emissionen ein Teilstrom des Abgases abgezweigt und rückgeführt, um der In modern internal combustion engines is diverted as a means of reducing nitrogen emissions, a partial flow of the exhaust gas and recycled to the
Verbrennungsluft im Ansaugsystem des Verbrennungsmotors beigemischt zu werden. Um die Verbrennungstemperatur abzusenken und damit die Stickoxid-Produktion zu verringern, werden Abgaskühler eingesetzt, in denen das rückgeführte Abgas mittels Luft oder einem anderen Kühlfluid gekühlt wird. Es hat sich herausgestellt, dass durch die thermische Einwirkung beim Schweißen der auf der Flanschfläche des Gehäuses liegende Boden sich relativ zum Flansch bewegen kann und dadurch keine genaue Lage der Wärmetauscherrohre (Winglets) im Gehäuse gegeben ist und der Zugang von Schrauben zu am Gehäuse angeordneten Gewindebohrungen nicht sichergestellt ist. Solche als Winglets bezeichnete Wärmetauscherrohre sind beispielsweise aus der DE 10 2010 043 309 AI bekannt. Combustion air to be admixed in the intake system of the internal combustion engine. In order to lower the combustion temperature and thus reduce the nitrogen oxide production, exhaust gas coolers are used, in which the recirculated exhaust gas is cooled by means of air or another cooling fluid. It has been found that by the thermal action during welding of the lying on the flange surface of the housing bottom can move relative to the flange and thereby no exact location of the heat exchanger tubes (winglets) is given in the housing and the access of screws to the housing arranged tapped holes is not ensured. Such designated as winglets heat exchanger tubes are known for example from DE 10 2010 043 309 AI.
In der DE 10 2009 050 884 AI ist ein Abgaswärmetauscher, insbesondere für ein Kraftfahrzeug beschrieben, der mindestens einen Diffusor zum Zuführen und/oder Abführen eines Abgasstroms, einen Tauscherbereich und ein von einem Kühlmittel durchströmbares Gehäuse umfasst. Der Tauscherbereich wird aus einer Vielzahl von sich in axialer Pachtung erstreckenden Tauscherrohren gebildet, die an einem Ende mit einem Boden fiuiddicht verbunden sind. DE 10 2009 050 884 A1 describes an exhaust gas heat exchanger, in particular for a motor vehicle, which comprises at least one diffuser for supplying and / or discharging an exhaust gas flow, an exchanger region and a housing through which a coolant can flow. The exchanger section is formed of a plurality of exchanger tubes extending in axial lease, which are connected at one end to a bottom in a fluid-tight manner.
Der Erfindung liegt die Aufgabe zugrunde, einen Wärmetauscher der eingangs genannten Gattung zu schaffen, bei dem der Boden auf dem Flansch des Gehäuses auf einfache Weise exakt positioniert wird und eine Relativbewegung des Bodens auf der Flanschfläche mit Sicherheit verhindert wird. The invention has for its object to provide a heat exchanger of the type mentioned, in which the ground on the flange of the housing simple way is accurately positioned and a relative movement of the soil on the flange is prevented with certainty.
Diese Aufgabe wird durch einen Wärmetauscher mit den Merkmalen des Anspruchs 1 gelöst. This object is achieved by a heat exchanger with the features of claim 1.
Die wesentlichen Vorteile der Erfindung sind darin zu sehen, dass eine relative The main advantages of the invention can be seen in the fact that a relative
Verschiebung des Bodens auf dem Flansch beim bzw. nach dem Schweißen verhindert wird und auf diese Weise die Lage der Wärmetauscherrohre relativ zum Gehäuse genau festgelegt ist. Außerdem wird der Zugang von Befestigungsschrauben zu Gewindebohrungen neben dem Flansch gesichert. Die exakte Positionierung erspart eine nachträgliche Dimensionskontrolle. Da die Pins gleichzeitig mit dem Gießen des Gehäuses hergestellt werden, sind keine zusätzlichen Bauteile und Arbeitsschritte zu deren Anbringung erforderlich. Dadurch und durch die Einsparung der nachträglichen Displacement of the soil on the flange during or after welding is prevented and in this way the position of the heat exchanger tubes is precisely defined relative to the housing. In addition, the access is secured by fastening screws to threaded holes next to the flange. The exact positioning saves a subsequent dimensional control. Since the pins are made simultaneously with the casting of the housing, no additional components and operations are required for their attachment. Thereby and by saving the subsequent
Dimensionskontrolle ergibt sich ein erheblicher Kostenvorteil gegenüber der Herstellung bekannter Abgaskühler. Dimension control results in a significant cost advantage over the production of known exhaust gas cooler.
Nach einer vorteilhaften Ausführungsform der Erfindung sind die Pins diametral gegenüberliegend zu der Öffnung vorgesehen. Dadurch ist der Boden am effektivsten gegen Verdrehung fixiert. According to an advantageous embodiment of the invention, the pins are provided diametrically opposite to the opening. As a result, the floor is most effectively fixed against rotation.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Pins an ihrem Fuß von einer umlaufenden Nut umgeben sind. Dadurch wird eine Gratbildung und hohe Kerbwirkung am Übergang zwischen Pinansatz und Gehäusestirnfläche (Flanschfläche) vermieden. Während der Bearbeitung der Stirnfläche des Gehäuses auf das Maß der gewünschten Gehäuselänge werden die Pins vom Fräser umfahren. Der Pin wird beim Fräsen nicht berührt. Die umlaufende Nut weist bezüglich ihres Querschnitts vorzugsweise einen Radius von 0,5 mm bis 1,5 mm auf. Der Fräser bearbeitet die Stirnfläche im Abstand von ca. 0,5 mm entfernt zum Pin. Des Weiteren ist es vorteilhaft, dass die Pins und die entsprechenden Ausnehmungen zumindest abschnittsweise eine elliptische und/oder kreisförmige und/oder eckige und/oder längliche Kontur aufweisen. Somit lassen sich die Pins beispielsweise auch ganz am Rand des Flansches According to an advantageous embodiment of the invention it is provided that the pins are surrounded at their foot by a circumferential groove. This avoids burr formation and high notch effect at the transition between the pin attachment and the housing end face (flange surface). During processing of the end face of the housing to the degree of the desired housing length, the pins are bypassed by the cutter. The pin is not touched during milling. The circumferential groove preferably has a radius of 0.5 mm to 1.5 mm with respect to its cross section. The milling cutter works on the face at a distance of approx. 0.5 mm away from the pin. Furthermore, it is advantageous that the pins and the corresponding recesses at least in sections one have elliptical and / or circular and / or angular and / or elongated contour. Thus, the pins can, for example, also at the very edge of the flange
positionieren. Es ist außerdem vorteilhaft, dass die Pins eine Höhe aufweisen, die ausreichend ist, um bei an dem Flansch anliegendem Boden aus dem Boden hervorzu- stehen. Auf diese Weise kann ein auf dem Boden aufliegender Diffusor exakt positioniert werden, indem die Pins in entsprechende Öffnungen an der dem Boden zugewandten Seite des Diffusors greifen. Dadurch wird der Diffusor mittels der Pins relativ zum Gehäuse zentriert. Dadurch entfällt aufwendiges Vermessen der Schnittstellen am Ende der Produktionslinie, wodurch Investitionen in eine Einrichtung für die Dimensionskontrolle eingespart werden. Vorzugsweise weist der Boden eine der Form des Flanschs des Gehäuses angepasste Form auf. Dadurch wird eine großflächige gleichmäßige Anlage des Bodens am Flansch erreicht. Gemäß einer weiteren Ausgestaltung sind an einem äußeren Rand des Flansches Vorsprünge oder Arme mit darin angeordneten Gewindebohrungen vorgesehen, und am Rand des Bodens sind auf gleiche Weise gestaltete Vorsprünge und Arme mit darin angeordneten Bohrungen vorgesehen. Durch die auf gleiche Weise gestalteten Vorsprünge und Arme mit Bohrungen, in denen Befestigungsschrauben aufgenommen werden, wird der Diffusor befestigt und der Boden gegen den Flansch fest verspannt. Ein Ausführungsbeispiel der Erfindung ist nachstehend anhand der Zeichnung näher erläutert. In der Zeichnung zeigt: position. It is also advantageous that the pins have a height sufficient to protrude from the ground with the bottom adjacent to the flange. In this way, a bottom-mounted diffuser can be accurately positioned by gripping the pins into corresponding openings on the bottom-facing side of the diffuser. As a result, the diffuser is centered by means of the pins relative to the housing. This eliminates the need for time consuming interfacing at the end of the production line, saving investment in a dimension control facility. Preferably, the bottom has a shape adapted to the shape of the flange of the housing. As a result, a large area uniform contact of the soil is achieved on the flange. According to a further embodiment, protrusions or arms with threaded holes arranged therein are provided on an outer edge of the flange, and at the edge of the bottom projections and arms designed in the same way are provided with bores arranged therein. By the same way shaped projections and arms with holes in which mounting screws are added, the diffuser is fixed and the bottom firmly clamped against the flange. An embodiment of the invention is explained below with reference to the drawing. In the drawing shows:
Fig. 1 eine Ansicht eines Gehäuseflansches an einem Gehäuse eines Kühlers, insbesondere Abgaswärmetauschers, 1 is a view of a housing flange on a housing of a radiator, in particular exhaust gas heat exchanger,
Fig. 2 einen Boden zur Aufnahme der Enden von Wärmetauscherrohren (Winglets), 2 shows a bottom for receiving the ends of heat exchanger tubes (winglets),
Fig. 3 Darstellung eines am Gehäuseflansch angeformten Arms mit einem aus der Fig. 3 representation of an integrally formed on the housing flange arm with one of the
Flanschebene vorstehenden Pin, Fig. 4 einen Ausschnitt des Gehäuseflanschs mit einem entsprechenden Abschnitt des Bodens, Flange plane protruding pin, 4 shows a section of the housing flange with a corresponding section of the floor,
Fig. 5 einen Ausschnitt des Gehäuseflansches mit angeformtem Arm und zugefügtem Boden, 5 shows a detail of the housing flange with molded-on arm and added bottom,
Fig. 6 einen Ausschnitt des Gehäuseflanschs gemäß Fig. 4 mit darüber dargestelltem Ausschnitt des Bodens und eines Diffusors, 6 shows a detail of the housing flange according to FIG. 4 with a detail of the bottom and a diffuser shown above, FIG.
Fig. 7 eine Ansicht auf einen am Gehäuseflansch befestigten Diffusor. Fig. 7 is a view of a housing attached to the flange diffuser.
In Fig. 1 ist eine Ansicht auf einen Flansch 1 eines Gehäuses 2 eines Wärmetauschers 3, beispielsweise eines Abgaskühlers gezeigt. Der Flansch 1 umgibt eine im Wesentlichen rechteckige Öffnung 4, die einen Schacht zur Aufnahme eines eine Vielzahl von Wärmetauscherrohren (Winglets) umfassenden Wärmetauscherblocks bildet. Seitlich am Flansch 1 sind Vorsprünge 6, 8 und Arme 7 angeformt, in denen Gewindebohrungen 9 zur Aufnahme von Befestigungsschrauben - was später noch erläutert wird - dienen. An dem Vorsprung 8 ist benachbart zu der Gewindebohrung 9 ein Pin 10 angeordnet, der senkrecht aus der Flanschfläche des Flansches 1 hervorsteht. Ein solcher Pin 10 ist außerdem an dem in Fig. 1 linken Arm 7 vorgesehen. Durch diese Anordnung befinden sich die Pins 10 an bezogen auf die Flanschfläche diagonal gegenüberliegenden Stellen des Flansches 1. Die Pins 10 sind an dem Flansch 1 angegossen, d. h. sie werden beim Gießen des Gehäuses 2 erzeugt und brauchen nicht nachträglich angebaut werden. In Fig. 1 is a view of a flange 1 of a housing 2 of a heat exchanger 3, for example, an exhaust gas cooler shown. The flange 1 surrounds a substantially rectangular opening 4, which forms a shaft for receiving a heat exchanger block comprising a plurality of heat exchanger tubes (winglets). Laterally on the flange 1 projections 6, 8 and arms 7 are formed, in which threaded holes 9 for receiving fastening screws - which will be explained later - are used. On the projection 8, a pin 10 is disposed adjacent to the threaded hole 9, which protrudes perpendicularly from the flange surface of the flange 1. Such a pin 10 is also provided on the left in Fig. 1 arm 7. By this arrangement, the pins 10 are located on relative to the flange surface diagonally opposite locations of the flange 1. The pins 10 are cast on the flange 1, d. H. they are generated when casting the housing 2 and do not need to be added later.
Die Fig. 2 zeigt einen Boden 11 mit einer Vielzahl von Öffnungen 12, in denen die Enden von Wärmetauscherrohren aufgenommen und stoffschlüssig verbunden, insbesondere geschweißt sind. Die Form des Bodens 11 entspricht der Form des Flansches 1 in Fig. 1 einschließlich der Vorsprünge 6' und 8' sowie der Arme 7'. Durch diese Form des Bodens 11 ergibt sich eine Anlagefläche zur Anlage des Bodens 11 auf dem Flansch 1. In den Vorsprüngen 6', 8' und Armen T sind Bohrungen oder gestanzte Löcher 13, die deckungsgleich mit den Gewindebohrungen 9 am Flansch 1 (vgl. Fig. 1) sind. Fig. 2 shows a bottom 11 with a plurality of openings 12, in which the ends of heat exchanger tubes received and materially connected, in particular welded. The shape of the bottom 11 corresponds to the shape of the flange 1 in Fig. 1 including the projections 6 'and 8' and the arms 7 '. By this shape of the bottom 11 results in a contact surface for bearing the bottom 11 on the flange 1. In the projections 6 ', 8' and arms T are holes or punched holes 13, which are congruent with the threaded holes 9 on the flange 1 (see Fig .. 1).
Außerdem sind Bohrungen 14 bzw. Öffnungen vorgesehen, die bezüglich ihrer Lage und Größe geeignet sind, die Pins 10 (vgl. Fig. 1) aufzunehmen, derart, dass die Pins 10 exakt in die Bohrungen 14 passen. In addition, bores 14 or openings are provided, which are suitable with regard to their position and size to receive the pins 10 (cf., Fig. 1), such that the pins 10 fit exactly into the holes 14.
In Fig. 3 ist einer der am Flansch 1 des Gehäuses 2 angeformten Arme 7 gezeigt, mit der im Arm 7 angeordneten Gewindebohrung 9 und dem Pin 10. Der Pin 10 weist an seinem Fuß eine umlaufende Nut 15 auf, die ebenfalls beim Gießen des Gehäuses 2 bereits erzeugt wird. Die umlaufende Nut hat bezüglich ihres Querschnitts vorzugsweise einen Radius von 0,5 mm. In Fig. 3, one of the integrally formed on the flange 1 of the housing 2 arms 7 is shown, arranged in the arm 7 threaded bore 9 and the pin 10. The pin 10 has at its foot a circumferential groove 15, which also during casting of the housing 2 is already generated. The circumferential groove preferably has a radius of 0.5 mm with respect to its cross section.
Die Fig. 4 zeigt, dass der Boden 11 dem Flansch 1 zugeführt wird, was allerdings erst der Fall ist, wenn der Boden 11 mit Wärmetauscherrohren 17 bestückt ist, wie dies in Fig. 6 gezeigt ist. Beim Zuführen des Bodens 11 zum Flansch 1 werden beide in Fig. 1 gezeigten Pins 10 in die jeweilige Öffnung 14 im Boden 11 eingeführt, wodurch eine exakte Positionierung des Bodens 11 auf dem Flansch 1 erfolgt. Durch die Pins 10 in den Öffnungen 14 wird auch eine spätere relative Bewegung des Bodens 11 zur Flanschfläche verhindert. Aus Fig. 5 ist ersichtlich, dass der Pin 10 bei auf den Flansch 1 aufgelegtem Boden 11 aus der Bodenebene hervorsteht und dass die Bohrung 13 mit der Gewindebohrung 9 deckungsgleich ist. Dadurch wird sichergestellt, dass die Befestigungsschrauben bei der Endmontage zuverlässig eingeführt werden können. Die Fig. 6 zeigt, dass die Wärmetauscherrohre 5 bzw. deren Enden im Boden 11 aufgenommen sind. Beim Zusammenbau des Wärmetauschers 3 wird der aus den Wärmetauscherrohren 5 gebildete Block in die in Fig. 1 gezeigte Öffnung gesteckt, wobei der Boden 11 auf dem Flansch 1 zur Anlage kommt. Die genaue Positionierung des Bodens 11 auf dem Flansch 1 erfolgt durch das Einführen der insbesondere diametral an- geordneten Pins 10 (vgl. Fig. 1) in die Bohrungen 14, denn die Dimensionierung von Pin 10 und Bohrung 14 ist so gewählt, dass ein relatives Gleiten des Bodens 11 auf der Flanschfläche ausgeschlossen ist. Durch die genaue Positionierung wird auch gewährleistet, dass die Bohrungen bzw. Löcher 13 deckungsgleich mit den Gewindebohrungen 9 sind und somit ein Abdecken der Gewindebohrungen 9 ausgeschlossen ist. Aus Fig. 6 ist weiter ersichtlich, dass nach Montage des Wärmetauscherblocks im Gehäuse 2 auf den Boden 11 ein Diffusor 16 aufgesetzt wird. Dieser Diffusor 16 weist an seiner dem Boden 11 zugewandten Fläche entsprechende Öffnungen auf, in die die über den Boden 11 herausstehenden Pins 10 eingeführt werden, so dass auch der Diffusor 16 eine exakt definierte Position einnimmt. Der Diffusor 16 hat eine an die Form des Bodens 11 an- gepasste Form einer Anlagefläche, an deren äußerem Rand ebenfalls Vorsprünge 6 und Arme 7 ausgebildet sind, wie dies am Flansch 1 und Boden 11 der Fall ist. Die Vorsprünge 6 und Arme 7 des Diffusors 16 sind ebenfalls mit Bohrungen 17 versehen, die deckungsgleich mit den Bohrungen 13 am Boden 11 und den Gewindebohrungen 9 sind, so dass Schrauben zur Befestigung des Diffusors 16 und dem festen Verspannen der Bauelemente 16, 11 und 2 eingeführt und festgeschraubt werden können. FIG. 4 shows that the bottom 11 is fed to the flange 1, which is however only the case when the bottom 11 is equipped with heat exchanger tubes 17, as shown in FIG. When feeding the bottom 11 to the flange 1 both pins 10 shown in Fig. 1 are inserted into the respective opening 14 in the bottom 11, whereby an exact positioning of the bottom 11 takes place on the flange 1. The pins 10 in the openings 14 and a subsequent relative movement of the bottom 11 is prevented from the flange. From Fig. 5 it can be seen that the pin 10 protrudes from the bottom plane 11 placed on the flange 1 floor and that the bore 13 is congruent with the threaded hole 9. This ensures that the mounting screws can be reliably inserted during final assembly. FIG. 6 shows that the heat exchanger tubes 5 or their ends are received in the bottom 11. When assembling the heat exchanger 3, the block formed from the heat exchanger tubes 5 is inserted into the opening shown in Fig. 1, wherein the bottom 11 comes to rest on the flange 1. The exact positioning of the base 11 on the flange 1 takes place by the insertion of the in particular diametrically arranged pins 10 (see Fig. 1) in the holes 14, because the dimensioning of Pin 10 and bore 14 are selected to preclude relative sliding of the bottom 11 on the flange surface. The exact positioning also ensures that the holes or holes 13 are congruent with the threaded holes 9 and thus covering the threaded holes 9 is excluded. From Fig. 6 it is further apparent that after assembly of the heat exchanger block in the housing 2 on the bottom 11, a diffuser 16 is placed. This diffuser 16 has, on its surface facing the bottom 11, corresponding openings into which the pins 10 projecting beyond the bottom 11 are inserted, so that the diffuser 16 also assumes a precisely defined position. The diffuser 16 has a shape adapted to the shape of the bottom 11 of a contact surface, on whose outer edge also projections 6 and arms 7 are formed, as is the case on the flange 1 and bottom 11. The projections 6 and arms 7 of the diffuser 16 are also provided with holes 17 which are congruent with the holes 13 on the bottom 11 and the threaded holes 9, so that screws for fixing the diffuser 16 and the fixed bracing of the components 16, 11 and second can be inserted and tightened.
In Fig. 7 ist eine Ansicht auf die Gesamtanordnung gezeigt, wobei der Diffusor 16 mittels Schrauben 18 auf dem Gehäuse 2 befestigt ist. Alle übrigen Bezugszeichen stimmen für gleiche Teile mit denjenigen der Fig. 1 bis 6 überein. In Fig. 7 is a view is shown on the overall arrangement, wherein the diffuser 16 is fixed by means of screws 18 on the housing 2. All other reference numerals are identical to those of FIGS. 1 to 6 for the same parts.
Die Form der Pins 10 kann dem Anwendungsfall entsprechend gewählt werden. Vortei- haft weisen die Pins und die entsprechenden Ausnehmungen zumindest abschnittsweise eine elliptische und/oder kreisförmige und/oder eckige und/oder längliche Kontur auf. The shape of the pins 10 can be selected according to the application. Advantageously, the pins and the corresponding recesses have, at least in sections, an elliptical and / or circular and / or angular and / or oblong contour.

Claims

Ansprüche claims
1. Wärmetauscher (3), insbesondere Abgaskühler mit einem Gehäuse (2), das eine Öffnung (4) aufweist, in die ein aus Wärmetauscherrohren (5) gebildeter Wärmetauscherblock eingesetzt ist, und mit einem Boden (11), in dem Enden der Wärmetauscherrohre (5) fluiddicht aufgenommen sind, wobei am Gehäuse (2) ein die Öffnung (4) umgebender Flansch (1) ausgebildet ist, auf dem der Boden (11) zur Anlage gebracht ist, 1. Heat exchanger (3), in particular exhaust gas cooler with a housing (2) having an opening (4) into which a heat exchanger tubes formed from (5) heat exchanger block is inserted, and with a bottom (11), in the ends of the heat exchanger tubes (5) are received in a fluid-tight manner, wherein on the housing (2) a flange (1) surrounding the opening (4) is formed, on which the base (11) is brought into abutment,
dadurch gekennzeichnet, dass im Bereich des Flansches (1) mindestens zwei aus einer Flanschebene hervorstehende Pins (10) vorgesehen sind und der Boden mindestens zwei Ausnehmungen (14) aufweist, in die die Pins (10) eingeführt sind, wobei die Pins (10) einstückig mit dem Gehäuse (2) ausgeführt und bei der Herstellung des Gehäuses (2) angegossen sind.  characterized in that in the region of the flange (1) at least two pins (10) protruding from a flange plane are provided and the bottom has at least two recesses (14) into which the pins (10) are inserted, the pins (10) made in one piece with the housing (2) and molded in the manufacture of the housing (2).
2 Wärmetauscher nach Anspruch 1 , 2 heat exchanger according to claim 1,
dadurch gekennzeichnet, dass die Pins diametral gegenüberliegend zu der Öffnung (4) vorgesehen sind.  characterized in that the pins are provided diametrically opposite to the opening (4).
3. Wärmetauscher nach Anspruch 1 oder 2, 3. Heat exchanger according to claim 1 or 2,
dadurch gekennzeichnet, dass die Pins (10) an ihrem Fuß von einer umlaufenden Nut (15) umgeben sind.  characterized in that the pins (10) are surrounded at their foot by a circumferential groove (15).
4. Wärmetauscher nach Anspruch 3, 4. Heat exchanger according to claim 3,
dadurch gekennzeichnet, dass die umlaufende Nut (15) einen Radius von 0,5 mm bis 1,5 mm aufweist. characterized in that the circumferential groove (15) has a radius of 0.5 mm to 1.5 mm.
5. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Pins und die entsprechenden Ausnehmungen zumindest abschnittsweise eine elliptische und/oder kreisförmige und/oder eckige und/oder längliche Kontur aufweisen. 5. Heat exchanger according to one of the preceding claims, characterized in that the pins and the corresponding recesses at least partially have an elliptical and / or circular and / or angular and / or elongated contour.
6. Wärmetauscher nach einem der vorhergehenden Ansprüche, 6. Heat exchanger according to one of the preceding claims,
dadurch gekennzeichnet, dass die Pins (10) eine Höhe aufweisen, die ausreichend ist, um bei an dem Flansch (1) anliegendem Boden (11) aus dem Boden (11) hervorzustehen.  characterized in that the pins (10) have a height sufficient to protrude from the floor (11) when the floor (11) abuts the flange (1).
7. Wärmetauscher nach einem der vorhergehenden Ansprüche, 7. Heat exchanger according to one of the preceding claims,
dadurch gekennzeichnet, dass der Boden (11) eine der Form des Flansches (1) des Gehäuses (2) angepasste Form aufweist.  characterized in that the bottom (11) has a shape adapted to the shape of the flange (1) of the housing (2).
8. Wärmetauscher einem der vorhergehenden Ansprüche, 8. Heat exchanger according to one of the preceding claims,
dadurch gekennzeichnet, dass an einem äußeren Rand des Flanschs (1) Vorsprünge (6, 8) oder Arme (7) mit darin angeordneten Gewindebohrungen (9) vorgesehen sind und am Rand des Bodens (11) auf gleiche Weise gestaltete Vorsprünge (6', 8') und Arme (7') mit darin angeordneten Bohrungen oder gestanzten Löchern (13) vorgesehen sind.  characterized in that at an outer edge of the flange (1) projections (6, 8) or arms (7) are provided with threaded holes (9) therein and at the edge of the bottom (11) in the same way designed projections (6 ', 8 ') and arms (7') are arranged therein with holes or punched holes (13).
9. Wärmetauscher nach Anspruch 8, 9. Heat exchanger according to claim 8,
dadurch gekennzeichnet, dass der Boden (11) mittels in die Gewindebohrung (9) gedrehten Schrauben (18) gegen den Flansch (1) gespannt ist.  characterized in that the bottom (11) by means of the threaded bore (9) turned screws (18) is clamped against the flange (1).
PCT/EP2015/001130 2014-06-06 2015-06-03 Heat exchanger, especially exhaust gas cooler WO2015185214A1 (en)

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US10591652B2 (en) 2015-11-20 2020-03-17 Schott Gemtron Corp. Multi-layer coated glass substrate
US11268704B2 (en) 2016-08-03 2022-03-08 Schott Ag Oven having a dielectrically coated glass substrate that absorbs electromagnetic radiation and emits heat radiation into the oven cavity
WO2019175433A1 (en) * 2018-03-16 2019-09-19 Valeo Termico, S.A. Heat exchanger for gases and method for assembling a heat exchanger

Also Published As

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DE102014008465A1 (en) 2015-12-17
KR20170020843A (en) 2017-02-24
EP3152508B1 (en) 2018-08-15

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