EP0239672B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP0239672B1
EP0239672B1 EP86116903A EP86116903A EP0239672B1 EP 0239672 B1 EP0239672 B1 EP 0239672B1 EP 86116903 A EP86116903 A EP 86116903A EP 86116903 A EP86116903 A EP 86116903A EP 0239672 B1 EP0239672 B1 EP 0239672B1
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EP
European Patent Office
Prior art keywords
heat exchanger
flat chamber
exchanger according
tube stub
modules
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
EP86116903A
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German (de)
French (fr)
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EP0239672A2 (en
EP0239672A3 (en
Inventor
Walter Kroll Firma
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Individual
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Individual
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Publication date
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Priority to AT86116903T priority Critical patent/ATE64452T1/en
Publication of EP0239672A2 publication Critical patent/EP0239672A2/en
Publication of EP0239672A3 publication Critical patent/EP0239672A3/en
Application granted granted Critical
Publication of EP0239672B1 publication Critical patent/EP0239672B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/10—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by plates
    • F24H3/105—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by plates using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

A heat exchanger, above all intended for warm air heaters, is described, which for the purpose of obtaining universal applicability and an economical manufacturing method consists of a number of identically designed modules of flat-chamber shape, which are arranged above one another and are detachably interconnected mechanically as well as in terms of flow via pipe connectors which are staggered in relation to one another. <IMAGE>

Description

Die Erfindung betrifft einen Wärmetauscher, insbesondere für mit Öl oder Gas betriebene Warmluft-Erzeuger mit mehreren gleichartig ausgebildeten, flachkammerförmigen, übereinander angeordneten und mechanisch sowie strömungsmäßig über gegeneinander versetzte Rohrstutzen miteinander verbundenen Modulen.The invention relates to a heat exchanger, in particular for hot air generators operated with oil or gas, having a plurality of modules of the same design, flat-chamber-shaped, arranged one above the other and mechanically and flow-wise connected to one another by means of mutually offset pipe sockets.

Wärmetauscher sind in den verschiedensten Ausführungsformen bekannt, aber sie sind häufig mit den Nachteilen eines hohen Gewichtes und vor allem einer mangelnden Anpaßbarkeit an unterschiedliche Leistungserfordernisse behaftet.Heat exchangers are known in a wide variety of embodiments, but they often have the disadvantages of being heavy in weight and, above all, not adaptable to different performance requirements.

Ein Wärmetauscher der angegeben Art ist aus der GB-A-1 165 173 bekannt. Die einzelnen Module eines solchen Wärmetauschers werden über eine Klebe- oder Lötverbindung miteinander verbunden.A heat exchanger of the specified type is known from GB-A-1 165 173. The individual modules of such a heat exchanger are connected to one another via an adhesive or soldered connection.

Nachteilig an derartigen Verbindungen ist, daß sie nur mit großem Aufwand hergestellt werden können. Ein weiterer Nachteil eines Wärmetauschers gemäß der GB-A-1 165 173 besteht darin, daß sich seine schwer zugänglichen Einzelmodule überhaupt nicht oder nur ungenügend reinigen lassen.A disadvantage of such connections is that they can only be produced with great effort. Another disadvantage of a heat exchanger according to GB-A-1 165 173 is that its difficult-to-access individual modules cannot be cleaned at all or can only be insufficiently cleaned.

Aufgabe der Erfindung ist es, die beschriebenen Nachteile zu beseitigen und einen Wärmetauscher zu schaffen, der ohne Schwierigkeiten an unterschiedliche Leistungserfordernisse anpaßbar, mit geringem Aufwand zu montieren, in seiner Größe nachträglich veränderbar, mit geringem Aufwand austauschbar und schließlich auch leicht zu reinigen ist.The object of the invention is to eliminate the disadvantages described and to provide a heat exchanger which can be easily adapted to different performance requirements, can be assembled with little effort, can be subsequently changed in size, can be replaced with little effort and is also easy to clean.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß jeder Rohrstutzen aus zu benachbarten Flachkammermodulen gehörenden ersten und zweiten Rohrstutzenabschnitten besteht, die an ihren freien Enden mit Verbindungsflanschen versehen und durch Spannringe lösbar miteinander verbunden sind.According to the invention, this object is achieved in that each pipe socket consists of first and second pipe socket sections belonging to adjacent flat chamber modules, which are provided with connecting flanges at their free ends and are releasably connected to one another by clamping rings.

Die Modulbauweise des Wärmetauschers nach der Erfindung ermöglicht es, den für das jeweilige Gerät benötigten, eine bestimmte Leistung aufweisenden Wärmetauscher auf einfache Weise aus gleichartigen Teilen aufzubauen. In entsprechender Weise ist es auch problemfrei möglich, beispielsweise zum Zwecke der Reinigung die Verbindung zwischen einzelnen Modulen zu lösen, wodurch sich eine optimale Zugänglichkeit ergibt.The modular design of the heat exchanger according to the invention makes it possible to easily build the heat exchanger required for the respective device and having a specific output from similar parts. In a corresponding manner, it is also possible without problems, for example for cleaning purposes, to disconnect the individual modules, which results in optimal accessibility.

Jeder Rohrstutzen besteht aus zu benachbarten Flachkammermodulen gehörenden ersten und zweiten Rohrstutzenabschnitten, die an ihren freien Enden mit Bindungsflanschen versehen sind.Each pipe socket consists of first and second pipe socket sections belonging to adjacent flat chamber modules, which are provided with binding flanges at their free ends.

Jedes Modul umfaßt demgemäß neben der vorzugsweise kreisförmig ausgebildeten Flachkammer zwei Rohrstutzenabschnitte, die diametral versetzt an den einander gegenüberliegenden Flachseiten des jeweiligen Moduls angebracht sind, so daß sich insgesamt ein spiegelsymmetrischer Aufbau ergibt, der die Zusammenstellung beliebig umfangreicher Wärmetauscher durch spiegelsymmetrisch vertauscht erfolgendes Aneinandersetzen der einzelnen Module zusammengestellt werden kann.Each module accordingly comprises, in addition to the preferably circular flat chamber, two pipe socket sections, which are attached diametrically offset on the opposite flat sides of the respective module, so that overall there is a mirror-symmetrical structure, which assembles arbitrarily extensive heat exchangers by mirror-symmetrically exchanging the individual modules can be put together.

Von besonderem Vorteil ist es, in die Spannringe zur Abdichtung eine umlaufende Graphitschnur einzulegen oder eine hitzebeständige Dichtmasse einzufügen.It is particularly advantageous to insert a circumferential graphite cord into the clamping rings for sealing or to insert a heat-resistant sealing compound.

Diese zweiteiligen Spannringe sind einfach zu montieren und zu demontieren und erbringen gleichzeitig die erforderliche Stabilität in der Verbindung der einzelnen Module.These two-part clamping rings are easy to assemble and disassemble and at the same time provide the necessary stability in the connection of the individual modules.

In den Flachkammermodulen selbst ist vorzugsweise zumindest ein Umlenkblech angeordnet, das den Strömungsweg der Rauch-bzw. Heißgase zwischen den beiden Rohrstutzenabschnitten festlegt, die den Eingang bzw. Ausgang des jeweiligen Flachkammermoduls bilden.At least one baffle plate is preferably arranged in the flat chamber modules themselves, which deflects the flow path of the smoke or. Specifies hot gases between the two pipe socket sections, which form the entrance or exit of the respective flat chamber module.

Nach einer weiteren Besonderheit der Erfindung ist jedes Flachkammermodul aus zwei identischen Schalenhälften aufgebaut, die über die Außenringflansche miteinander verschweißt sind.According to a further special feature of the invention, each flat chamber module is constructed from two identical shell halves which are welded to one another via the outer ring flanges.

Aufgrund der Tatsache, daß die einzelnen Module des Wärmetauschers nach der Erfindung konstruktiv besonders einfach ausgebildet sind, läßt sich eine wirtschaftliche Fertigung unter Verwendung üblicher Methoden der Blechbearbeitung erzielen, wobei die Verbindung der einzelnen Module über Spannringe nicht nur hinsichtlich der Montage des jeweiligen Wärmetauschers günstig ist, sondern sich auch auf die Betriebssicherheit der Gesamtanordnung vorteilhaft auswirkt.Due to the fact that the individual modules of the heat exchanger according to the invention are structurally particularly simple, economical production can be achieved using conventional sheet metal working methods, the connection of the individual Modules via clamping rings are not only favorable with regard to the assembly of the respective heat exchanger, but also have an advantageous effect on the operational reliability of the overall arrangement.

Weitere besonders vorteilhafte Merkmale der Erfindung sind in den Unteransprüchen angegeben.Further particularly advantageous features of the invention are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert; in der Zeichnung zeigt

Fig. 1
eine schematische Seitenansicht eines Flachkammermoduls,
Fig. 2
eine Draufsicht des Flachkammermoduls nach Fig. 1,
Fig. 3
eine Seitenansicht eines aus Flachkammermodulen nach den Fig. 1 und 2 aufgebauten und auf einem Heißlufterzeuger angebrachten Wärmetauschers, und
Fig. 4
eine Vorderansicht der Anordnung nach Fig. 3.
An embodiment of the invention is explained below with reference to the drawing; shows in the drawing
Fig. 1
1 shows a schematic side view of a flat chamber module,
Fig. 2
2 shows a top view of the flat chamber module according to FIG. 1,
Fig. 3
a side view of a built up of flat chamber modules according to FIGS. 1 and 2 and attached to a hot air generator, and
Fig. 4
3 shows a front view of the arrangement according to FIG. 3.

Fig. 1 zeigt ein aus einer Blechkonstruktion bestehendes Flachkammermodul 1, das aus zwei identischen Schalenhälften 11, 12 zusammengesetzt ist. Die beiden Schalenhälften sind über Außenringflansche 13 miteinander verschweißt.1 shows a flat chamber module 1 consisting of a sheet metal construction, which is composed of two identical shell halves 11, 12. The two shell halves are welded together via outer ring flanges 13.

Gegeneinander diametral versetzt sind auf den einander gegenüberliegenden Seiten des Flachkammermoduls 1 Rohrstutzenabschnitte 4, 5 eingesetzt und mit der jeweiligen Modulwand verschweißt oder mittels Bördelwerkzeug gebördelt sind. An ihren außenliegenden Enden sind die Rohrstutzenabschnitte 4, 5 mit Verbindungsflanschen 6, 7 versehen, die in einer noch näher zu beschreibenden Weise die gegenseitige Kopplung von Modulen 1 gestatten.Pipe socket sections 4, 5 are inserted diametrically offset from one another on the opposite sides of the flat chamber module 1 and are welded to the respective module wall or are flanged by means of a flanging tool. At their outer ends, the pipe socket sections 4, 5 are provided with connecting flanges 6, 7, which allow the mutual coupling of modules 1 in a manner to be described in more detail.

Im Inneren des Moduls ist ein mittig und bei größeren Modulen außermittig angeordnetes, sich über die gesamte Modulhöhe erstreckendes Umlenkblech 10 vorgesehen und durch Schweißung fixiert.In the interior of the module, a baffle plate 10 is provided which is arranged in the middle and, in the case of larger modules, eccentrically and extends over the entire module height and is fixed by welding.

Wie der Fig. 2 zu entnehmen ist, verläuft das Umlenkblech 10 etwa entsprechend einer gemeinsamen Tangente an den Rohrstutzenabschnitten 4, 5. Dieses Umlenkblech 10 stellt einen definierten Verlauf der Heißgasströmung innerhalb eines jeden Moduls 1 sicher und verhindert, daß Heißgase unmittelbar von der Eintrittsseite zur Austrittsseite des jeweiligen Moduls gelangen können.As can be seen in FIG. 2, the baffle plate 10 runs approximately according to a common tangent to the pipe socket sections 4, 5. This baffle plate 10 ensures a defined course of the hot gas flow within each module 1 and prevents hot gases from flowing directly from the inlet side to Exit side of the respective module.

Der Durchmesser der Rohrstutzenabschnitte 4, 5 entspricht etwa dem Radius des Flachkammermoduls 1, wodurch die mechanische Festigkeit eines aus solchen Modulen aufgebauten Wärmetauschers unter gleichzeitiger Gewährleistung einer bestmöglichen Funktion optimiert wird.The diameter of the pipe socket sections 4, 5 corresponds approximately to the radius of the flat chamber module 1, as a result of which the mechanical strength of a heat exchanger constructed from such modules is optimized while at the same time ensuring the best possible function.

Fig. 3 zeigt in Zusammenhang mit einem schematisch dargestellten Heißlufterzeuger 15 einen aus mehreren Flachkammermodulen 1 aufgebauten Wärmetauscher.FIG. 3 shows, in connection with a schematically illustrated hot air generator 15, a heat exchanger constructed from a plurality of flat chamber modules 1.

Die abwechselnd 180° um ihre Mittenebene gedreht angeordneten Module 1 sind über Rohrstutzen 2, 3 miteinander verbunden, die über die Höhe des Wärmetauschers betrachtet in Richtung der Längsachse des Heißlufterzeugers abwechselnd versetzt angeordnet sind.The modules 1, which are arranged alternately rotated by 180 ° about their central plane, are connected to one another via pipe sockets 2, 3, which are viewed over the height of the heat exchanger are alternately offset in the direction of the longitudinal axis of the hot air generator.

Die Rohrstutzen 2 und 3 bestehen - wie sich aus den Fig. 1 und 2 ergibt - aus jeweils zwei Rohrstutzenabschnitten 4, 5, die über ihre Flansche mittels Spannringen 8 stabil und rauchdicht gekuppelt sind. Zwischen die Spannringe ist zur Gewährleistung einer absolut Rauchdichtheit vorzugsweise eine Graphitschnur 9 eingelegt oder eine hitzebeständige Dichtmasse eingefügt. Es ist auch möglich, zwischen die Rohrstutzenabschnitte 4, 5 Dichtungsringe einzusetzen.The pipe sockets 2 and 3 consist - as can be seen from FIGS. 1 and 2 - of two pipe socket sections 4, 5, which are coupled stably and smoke-tight via their flanges by means of clamping rings 8. A graphite cord 9 or a heat-resistant sealing compound is preferably inserted between the clamping rings to ensure absolute smoke tightness. It is also possible to insert sealing rings between the pipe socket sections 4, 5.

Stützelemente 14 sind zwischen aufeinanderfolgenden Modulen 1 jeweils in dem Bereich vorgesehen, in dem sich gerade kein Rohrstutzen 2 bzw. 3 befindet. Diese Stützelemente 14 können aus Sechskantschrauben bestehen, aber es sich auch hier alle denkbaren anderen Ausführungsformen von Stützelementen brauchbar.Support elements 14 are provided between successive modules 1 in the area in which there is no pipe socket 2 or 3 at the moment. These support elements 14 can consist of hexagon screws, but all conceivable other embodiments of support elements can also be used here.

Der Anschluß des Wärmetauschers als Einheit an die jeweils rauch- bzw. heißgaserzeugende Anordnung kann - wie in Fig. 3 gezeigt - ebenfalls über Verbindungsflansche und Spannringe 8 erfolgen.The connection of the heat exchanger as a unit to the respective smoke or hot gas generating arrangement can - as shown in Fig. 3 - also take place via connecting flanges and clamping rings 8.

Die Vorderansicht nach Fig. 4 läßt den symmetrischen Aufbau des Wärmetauschers aus vier Flachkammermodulen erkennen, die abwechselnd aufeinandergesetzt und durch Spannringe miteinander verbunden sind.
Symmetrisch angeordnete Stützelemente 14 stabilisieren die Gesamtanordnung. Da die Verbindung der einzelnen Module über die Spannringe 8 besonders einfach herstell- und lösbar ist, lassen sich Module einzeln oder in Gruppen problemfrei abnehmen oder austauschen und demgemäß auch besonders einfach reinigen.The front view according to FIG. 4 reveals the symmetrical structure of the heat exchanger from four flat chamber modules which are alternately placed on top of one another and connected to one another by clamping rings.
Support elements 14 arranged symmetrically stabilize the overall arrangement. Since the connection of the individual modules via the clamping rings 8 is particularly easy to manufacture and to solve, modules can be removed or replaced individually or in groups without problems and accordingly can also be cleaned particularly easily.

Claims (9)

  1. Heat exchanger, in particular for a hot air generator operating with oil or gas, comprising a plurality of similarly constructed and flat chamber shaped modules which are arranged above each other and are connected to each other mechanically and flow-wise by means of mutually offset tube stubs,
    characterized in that
    each tube stub (2, 3) consists of first and a second tube stub sections (4, 5) belonging to adjacent flat chamber modules (1), the tube stub sections being provided at their free ends with connection flanges (6, 7) and releasably connected to each other by means of clamping rings (8).
  2. Heat exchanger according to claim 1,
    characterized in that
    a circumferential graphite cord (9) or a heat resistant sealing composition is inserted in the clamping rings (8) made in two parts, or in that a sealing ring is inserted between the tube stub sections (4, 5).
  3. Heat exchanger according to one of the preceding claims,
    characterized in that
    the flat chamber modules (1) are made in shell-form and the tube stub sections (4, 5) formed on the oppositely disposed flat sides are arranged without overlap as seen in plane view in different shell halves.
  4. Heat exchanger according to claim 3,
    characterized in that
    the diameter of the tube stub sections (4, 5) is slightly lower than the radius of the flat chamber module (1).
  5. Heat exchanger according to one of the preceding claims,
    characterized in that
    a deflection plate (10) is provided in each flat chamber module (1) essentially centrally and extending along a common tangent of both tube stub sections (4, 5), and in that in apparatuses of greater size, at least one additional deflection plate is provided off-center.
  6. Heat exchanger according to claim 5,
    characterized in that
    the deflection plate (10) extends over the entire height of the flat chamber module (1).
  7. Heat exchanger according to one of the preceding claims,
    characterized in that
    each flat chamber module (1) consists of two identical shell halves (11, 12), which are welded to each other by means of outwardly directed ring flanges (13).
  8. Heat exchanger according to one of the preceding claims,
    characterized in that
    the tube stub sections (4, 5) project into the flat chamber modules (1) or terminate flush with the latter.
  9. Heat exchanger according to one of the preceding claims,
    characterized in that
    supporting members (14) are provided between adjacent flat chamber modules (1), and are respectively arranged in the half of the module (1) opposite to the respective connecting tube stub (2, 3).
EP86116903A 1986-03-03 1986-12-04 Heat exchanger Expired - Lifetime EP0239672B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86116903T ATE64452T1 (en) 1986-03-03 1986-12-04 HEAT EXCHANGER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606871 1986-03-03
DE3606871A DE3606871C2 (en) 1986-03-03 1986-03-03 Heat exchanger consisting of flat chamber modules

Publications (3)

Publication Number Publication Date
EP0239672A2 EP0239672A2 (en) 1987-10-07
EP0239672A3 EP0239672A3 (en) 1988-03-16
EP0239672B1 true EP0239672B1 (en) 1991-06-12

Family

ID=6295364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116903A Expired - Lifetime EP0239672B1 (en) 1986-03-03 1986-12-04 Heat exchanger

Country Status (3)

Country Link
EP (1) EP0239672B1 (en)
AT (1) ATE64452T1 (en)
DE (1) DE3606871C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939017A1 (en) * 1999-08-18 2001-02-22 Walter Kroll Gmbh Waerme Und U Heat exchanger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1165173A (en) * 1966-08-19 1969-09-24 Marston Excelsior Ltd Heat Exchanger
DE2107108A1 (en) * 1971-02-15 1972-08-24 Fritz Haugg KG Fabrik für Polar-Lufterhitzer und Stahlheizkessel, 8872 Burgau Articulated boiler with a combustion chamber located in the lower part
DE3045387C2 (en) * 1980-12-02 1983-09-01 Wilhelm 4330 Mühlheim/Ruhr Hüßelmann Flue gas heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939017A1 (en) * 1999-08-18 2001-02-22 Walter Kroll Gmbh Waerme Und U Heat exchanger

Also Published As

Publication number Publication date
EP0239672A2 (en) 1987-10-07
EP0239672A3 (en) 1988-03-16
DE3606871A1 (en) 1987-09-10
DE3606871C2 (en) 1997-10-09
ATE64452T1 (en) 1991-06-15

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