EP2250448A1 - Cast-iron or aluminium sectional boiler - Google Patents

Cast-iron or aluminium sectional boiler

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Publication number
EP2250448A1
EP2250448A1 EP09717341A EP09717341A EP2250448A1 EP 2250448 A1 EP2250448 A1 EP 2250448A1 EP 09717341 A EP09717341 A EP 09717341A EP 09717341 A EP09717341 A EP 09717341A EP 2250448 A1 EP2250448 A1 EP 2250448A1
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EP
European Patent Office
Prior art keywords
boiler according
sectional boiler
annular
members
sectional
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
EP09717341A
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German (de)
French (fr)
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EP2250448B1 (en
Inventor
Rainer Rausch
Gerhard Jung
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2250448A1 publication Critical patent/EP2250448A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/30Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections
    • F24H1/32Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections with vertical sections arranged side by side

Definitions

  • the invention relates to a sectional boiler made of cast iron or aluminum, in particular a condensing boiler, according to the preamble of claim 1.
  • Such sectional boiler consist of several integrally cast boiler members, which are arranged one behind the other and water side connected by hubs.
  • the water channels and water pockets formed by the boiler members are flowed through between the return connection and the supply connection.
  • generic sectional heating boilers have a lower return connection and a top feed connection, preferably in the respective hub.
  • the hot gases flow from the combustion chamber via downstream hot gas flues to an exhaust gas outlet and release heat to the boiler water on their way.
  • the heat exchangers of conventional calorifiers are often made of cast iron. They are characterized by high robustness and long life. Their construction from mostly identical casting segments allows cost-effective production and easy scalability with regard to different output sizes and offers good mounting options even under tight installation conditions. The material endures the short exhaust gas condensation phases very well at startup and cold heat exchanger. Only for condensing operation with a prolonged build-up of condensation is cast iron in its present form and design not suitable.
  • the object of the invention is to optimize a sectional heating boiler made of cast iron or aluminum, in particular with regard to compactness and robustness.
  • the cast-iron or aluminum sectional heating boiler is characterized in that annular gaps are provided between two adjacent members as heating gas trains, which each run approximately radially outward from the combustion chamber and open into an exhaust gas collecting space on the outside of the members.
  • annular gaps are provided between two adjacent members as heating gas trains, which each run approximately radially outward from the combustion chamber and open into an exhaust gas collecting space on the outside of the members.
  • two adjacent links each have an associated geometry.
  • annular gap at right angles to the central axis of the combustion chamber extends radially and straight outwards.
  • an annular gap is radially curved and extends arcuately, similar to a turbine blade geometry, to the outside.
  • Inclined position to the central axis of the combustion chamber extends straight outward. This is particularly useful with a vertical arrangement of the entire block of links, because then condensate can drain all the way down from a gap. Furthermore, an annular gap in the radial direction can also run outwards in a wave-like manner, in particular in order to increase the flow turbulence within a gap, so that an intensive heat transfer is achieved on the surfaces.
  • the width and / or the free cross section of an annular gap decreases from the combustion chamber to the outlet on the outside of the links, - A -
  • the heating gas contacted surfaces of the members, at least the gap forming surfaces, may be provided with a corrosion protection coating.
  • the Abgassammeiraum on the outside of the members in which open the annular column, extends as a hollow cylinder around the outer lateral surfaces of the members and is bounded by a jacket to the outside. This is sealingly received between radially outwardly projecting annular webs on the outside of the front and rear member.
  • the two anchor rods for holding the link block are arranged inside the hubs.
  • a supply pipe arranged inside the hubs for return water and / or removal pipe for supply water can serve, if it is provided with corresponding threads for
  • the upper and lower hubs between the return and supply ports can be mutually closed, in which case closure means are attached to the anchor rods, feed tube and / or removal tube.
  • closure means are attached to the anchor rods, feed tube and / or removal tube.
  • At least two centering points or surfaces are provided on each member for maintaining an exact gap between two adjacent members, which images the raw casting dimensions and raw casting tolerances particularly well.
  • the thickness of the limb has a direct influence on the gap width between two limbs.
  • These centering points or surfaces are then decisive for the mechanical processing of the sealing or contact surfaces on the hubs, because it can be about the actual existing final dimension after the casting process at the crucial point determine and then on the processing according to the desired and individual set exactly the right nominal dimension.
  • a sectional boiler with the best suitability for condensing operation is created, in which the positive material properties of cast iron or aluminum are selectively applied and used to ensure good heat transfer properties, compactness and robustness. Corrosive loads are absorbed.
  • the anticorrosion coating itself is according to the invention not only easy to apply and control, but it is also protected in the columns from possible mechanical stress.
  • the sectional construction also offers the advantage of variably covering different lengths for different combustion and heat exchanger outputs by inserting further middle links. Nevertheless, then remain all front-mounted attachments and the water-side connections the same. Only the surrounding mantle around the exhaust collection chamber varies. Because of the low exhaust gas temperatures, this can even be made of plastic.
  • the drawing shows an embodiment of the invention. It shows a sectional boiler made of cast iron or aluminum:
  • FIG. 2 in a vertical longitudinal section through one half of the entire link block
  • Fig. 3 with an intermediate member in perspective view.
  • the sectional boiler consists essentially of annular members, namely a front member 1, a ceiling-shaped rear member 2 and a plurality of middle members 3. These form a combustion chamber 4 and the annular water chambers 5 are connected to each other via hubs 6, 6 'in connection.
  • each annular column 7 between two adjacent members 1, 2, 3 are provided, each extending from the combustion chamber 4 approximately radially outward and open into an exhaust gas collection chamber 8.
  • two adjacent links 1, 2, 3 each have an associated geometry. In the illustrated embodiment arise by the curvatures of the members 1, 2, 3 four radially curved, annular column. 7
  • the Abgassammeiraum 8 extends as a hollow cylinder to the outer lateral surfaces of the members 1, 2, 3 and is bounded by a jacket 9 to the outside, which between radially outwardly projecting annular webs 10 on the outer side of the front and rear member 1, 2 is recorded sealing.
  • Two anchor rods 11 for holding the link block are arranged within the hubs 6, 6 '.
  • This disc-like closure means 12 are fixed to the upper and lower hubs 6, 6 'to form a forced flow between see return and flow connection to close each other.
  • each member 1, 2, 3 for maintaining an exact gap between two adjacent links 1, 2, 3 three centering surfaces 13 of molded cam to accurately identify the respective present dimensions after the casting process and for the processing of the hub areas consulted.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Fluid Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

The invention relates to a cast-iron or aluminium sectional boiler, in particular a condensing boiler, having substantially annular sections, wherein a front section (1), a cover-like rear section (2) and at least one central section (3) are provided, said sections forming a combustion space (4) with substantially surrounding heating gas flues and the annular water spaces (5) of said sections being connected to one another via inner races (6, 6'), having a lower return connection and an upper feed connection and also having at least two armature rods (11) for holding the section block together. The invention is based on the object of optimizing a cast-iron or aluminium sectional boiler particularly in terms of compactness and robustness. The invention is characterized in that in each case annular gaps (7) are provided as heating gas flues between two adjacent sections (1, 2, 3) which each run approximately radially outwards, starting from the combustion space, and issue into an exhaust gas collection space on the outside of the sections.

Description

Beschreibung description
Titeltitle
Gliederheizkessel aus Gusseisen oder AluminiumCast iron or aluminum sectional boilers
Die Erfindung betrifft einen Gliederheizkessel aus Gusseisen oder Aluminium, insbesondere einen Brennwertkessel, nach dem Oberbegriff des Patentanspruches 1.The invention relates to a sectional boiler made of cast iron or aluminum, in particular a condensing boiler, according to the preamble of claim 1.
Derartige Gliederheizkessel bestehen aus mehreren einstückig gegossenen Kesselgliedern, welche hintereinander angeordnet und wasserseitig durch Naben miteinander verbunden sind. Dabei werden die von den Kesselgliedern gebildeten Wasserkanäle und Wassertaschen zwischen dem Rücklaufanschluss und dem Vorlaufanschluss durchströmt. In der Regel besitzen gattungsgemäße Gliederheizkessel einen unteren Rücklaufanschluss und einen oben angeordneten Vorlaufanschluss, vorzugsweise in der jeweiligen Nabe. Die Heizgase strömen vom Brennraum über nachgeschaltete Heizgaszüge zu einem Abgasstutzen und geben auf Ihrem Weg Wärme an das Kesselwasser ab.Such sectional boiler consist of several integrally cast boiler members, which are arranged one behind the other and water side connected by hubs. The water channels and water pockets formed by the boiler members are flowed through between the return connection and the supply connection. As a rule, generic sectional heating boilers have a lower return connection and a top feed connection, preferably in the respective hub. The hot gases flow from the combustion chamber via downstream hot gas flues to an exhaust gas outlet and release heat to the boiler water on their way.
Bei allen bisherigen Kesseln dieser Art sind die Glieder in Reihe hintereinander angeordnet. Es gibt ein ringförmiges Vorderglied, an dem eine Brennraumtür oder eine Brennerplatte befestigt werden können, je nach Leistungsgröße ein oder mehrere ähnlich gestaltete Mittelglieder sowie ein Hinterglied. Dabei erstreckt sich der Brennraum durch Vorder- und Mittelglieder bis zum Hinterglied, welches mit seiner deckeiförmigen Gestaltung den Boden des Brennraumes bildet. Alle Kesselglieder besitzen bei diesen Ausführungsformen ähnliche äußere Abmessungen, weil sie über den gesamten Kes- selquerschnitt Teile von Brennraum, Heizgaszügen und Wasserraum bilden. Weiterhin sind auch Kessel für niedrige Leistungsbereiche bekannt, die aus nur zwei oder gar nur einem Kesselglied bestehen. Hinsichtlich der Abgasführung und des Wirkungsgrades der Heizgeräte unterscheidet man zwischen Heizwerttechnik und Brennwerttechnik. Aus Gründen der Energieeinsparung kommen immer mehr Brennwertheizgeräte zur Anwendung. Der Aufbau ihres Wärmetauschers gewährt die Möglichkeit, die im Betrieb bei der Verbrennung von Brennstoff und Luft entstehenden feuchten Abgase unter den Abgastaupunkt abzukühlen. Dabei kondensiert die Feuchtigkeit der Abgase aus und es wird zusätzlich zur fühlbaren Wärme die Kondensationswärme auf das Heizwasser übertragen.In all previous boilers of this type, the links are arranged in series one behind the other. There is an annular front member to which a combustion chamber door or a burner plate can be attached, depending on the power size one or more similarly shaped middle links and a rear link. In this case, the combustion chamber extends through the front and middle links to the rear link, which forms the bottom of the combustion chamber with its ceiling-shaped design. All boiler members have similar external dimensions in these embodiments because they form parts of the combustion chamber, Heizgaszügen and water space over the entire boiler cross section. Furthermore, boilers for low power ranges are known, which consist of only two or even only one boiler member. With regard to the exhaust system and the efficiency of the heaters, a distinction is made between heating value technology and condensing boiler technology. For reasons of energy saving more and more condensing boilers are used. The design of their heat exchanger provides the opportunity to cool the resulting in the combustion of fuel and air moist exhaust gases below the Abgastaupunkt. The moisture of the exhaust gases condenses and in addition to the sensible heat, the heat of condensation is transferred to the heating water.
Bei einer Verwendung als Brennwertkessel muss besonderen Wert auf die Werkstoff- auswahl gelegt werden, denn auf Grund der Zusammensetzung des verwendetenWhen used as a condensing boiler, special attention must be paid to the choice of materials, because of the composition of the used
Brennstoffs und der Verbrennungsführung sind die Abgase schadstoffbelastet und das anfallende Kondenswasser weist verschiedene Säuren in geringer Konzentration auf. Die von Kondenswasser berührten Bauteile wie Heizflächen, Abgassammler und Ab- gasleitung müssen also gegenüber den Säuren resistent sein, weshalb es üblich ist, diese Bauteile aus Edelstahl, Aluminium oder Kunststoff zu fertigen. Speziell in der Öl- brennwerttechnik kommen im Allgemeinen geschweißte Edelstahlwärmetauscher zur Anwendung, wie beispielsweise auch in der DE 10 2004 023 711 B3 als Spiralrohrwicklung offenbart. Sie bieten den Vorteil, die Säurebelastung ohne Korrosion zu ertragen. Nachteilig sind die mit dem Werkstoff verbundenen hohen Kosten sowie beson- ders bei Schweißkonstruktionen aus Blechen die ungünstigeren Skalierbedingungen und die größeren, in räumlich engen Verhältnissen schwer montierbaren Baugrößen.Fuel and the combustion management, the exhaust gases are contaminated and the resulting condensation has various acids in low concentration. The components touched by condensation, such as heating surfaces, exhaust gas collector and exhaust gas line must therefore be resistant to the acids, which is why it is customary to manufacture these components from stainless steel, aluminum or plastic. Specifically in oil condensing technology, welded stainless steel heat exchangers are generally used, as disclosed for example in DE 10 2004 023 711 B3 as spiral tube winding. They offer the advantage of enduring the acid load without corrosion. Disadvantages are the high costs associated with the material and, particularly in the case of weldments made of sheet metal, the unfavorable scaling conditions and the larger sizes which are difficult to assemble in spatially narrow conditions.
Die Wärmetauscher konventioneller Heizwertgeräte werden häufig aus Gusseisen hergestellt. Sie zeichnen sich durch hohe Robustheit und lange Lebensdauer aus. Ihr Auf- bau aus zumeist identischen Gusssegmenten erlaubt eine kostengünstige Fertigung und leichte Skalierbarkeit hinsichtlich unterschiedlicher Leistungsgrößen und bietet gute Montagemöglichkeiten selbst unter engen Aufstellbedingungen. Der Werkstoff erträgt die kurzen Abgaskondensationsphasen bei Betriebsstart und kaltem Wärmetauscher sehr gut. Lediglich für den Brennwertbetrieb mit länger anhaltendem Kondens- wasseranfall ist Gusseisen in seiner heutigen Form und Gestaltung nicht geeignet.The heat exchangers of conventional calorifiers are often made of cast iron. They are characterized by high robustness and long life. Their construction from mostly identical casting segments allows cost-effective production and easy scalability with regard to different output sizes and offers good mounting options even under tight installation conditions. The material endures the short exhaust gas condensation phases very well at startup and cold heat exchanger. Only for condensing operation with a prolonged build-up of condensation is cast iron in its present form and design not suitable.
Weiterhin ist aus der DE 296 21 817 Ul ein Brennwertheizkessel mit integriertem und hydraulisch nachgeschaltetem Kompaktwärmetauscher aus korrosionsbeständigem Werkstoff bekannt. Dieser Kompaktwärmetauscher ist als separates Bauteil von zwei schalenförmigen Kesselgliedern umschlossen und wasserseitig gesondert angeschlossen. Alle Kessel mit nachgeschaltetem Wärmetauscher haben die Nachteile, dass der Montageaufwand durch die erforderlichen Rohrteile erhöht wird und der wasserseitige Widerstand ansteigt. Die Anordnung als separates, außen liegendes Bauteil bewirkt ebenfalls Abkühlverluste, die durch eine geeignete Wärmedämmung vermindert werden müssen.Furthermore, from DE 296 21 817 Ul a condensing boiler with integrated and hydraulically downstream compact heat exchanger made of corrosion-resistant material known. This compact heat exchanger is as a separate component of two enclosed shell-shaped boiler sections and separately connected on the water side. All boilers with downstream heat exchanger have the disadvantages that the assembly work is increased by the required pipe parts and the water-side resistance increases. The arrangement as a separate, external component also causes cooling losses, which must be reduced by a suitable thermal insulation.
Der Erfindung liegt die Aufgabe zugrunde, einen Gliederheizkessel aus Gusseisen o- der Aluminium insbesondere im Hinblick auf Kompaktheit und Robustheit zu optimie- ren.The object of the invention is to optimize a sectional heating boiler made of cast iron or aluminum, in particular with regard to compactness and robustness.
Erfindungsgemäß wird dies mit den Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Weiterbildungen sind den Unteransprüchen zu entnehmen. Gekennzeichnet ist der Gliederheizkessel aus Gusseisen oder Aluminium dadurch, dass als Heizgaszüge jeweils ringförmige Spalte zwischen zwei benachbarten Gliedern vorgesehen sind, welche jeweils ausgehend vom Brennraum etwa radial nach außen verlaufen und in einen Abgassammeiraum auf der Außenseite der Glieder einmünden. Zum Ausbilden eines ringförmigen Spaltes weisen jeweils zwei benachbarte Glieder eine einander zugeordnete Geometrie auf.This is achieved with the features of claim 1 according to the invention. Advantageous developments can be found in the dependent claims. The cast-iron or aluminum sectional heating boiler is characterized in that annular gaps are provided between two adjacent members as heating gas trains, which each run approximately radially outward from the combustion chamber and open into an exhaust gas collecting space on the outside of the members. To form an annular gap, two adjacent links each have an associated geometry.
Dazu sind verschiedene Ausführungsformen möglich, nämlich dass erstens ein ringförmiger Spalt im rechten Winkel zur Mittelachse des Brennraumes radial und gerade nach außen verläuft. Bei einer zweiten Variante ist ein ringförmiger Spalt radial gekrümmt und verläuft bogenförmig, ähnlich einer Turbinenschaufel-Geometrie, nach au- ßen. In einer dritten Ausführungsform ist vorgesehen, dass ein ringförmiger Spalt mitFor this purpose, various embodiments are possible, namely that first, an annular gap at right angles to the central axis of the combustion chamber extends radially and straight outwards. In a second variant, an annular gap is radially curved and extends arcuately, similar to a turbine blade geometry, to the outside. In a third embodiment it is provided that an annular gap with
Schrägstellung zur Mittelachse des Brennraumes gerade nach außen verläuft. Dies bietet sich bei eine stehenden Anordnung des gesamten Gliederblockes besonders an, weil dann Kondensat ringsum aus einem Spalt gut nach unten ablaufen kann. Weiterhin kann ein ringförmiger Spalt in radialer Richtung auch wellenförmig nach außen ver- laufen, insbesondere um innerhalb eines Spaltes die Strömungsturbulenz zu erhöhen, damit an den Oberflächen ein intensiver Wärmeübergang erreicht wird.Inclined position to the central axis of the combustion chamber extends straight outward. This is particularly useful with a vertical arrangement of the entire block of links, because then condensate can drain all the way down from a gap. Furthermore, an annular gap in the radial direction can also run outwards in a wave-like manner, in particular in order to increase the flow turbulence within a gap, so that an intensive heat transfer is achieved on the surfaces.
Vorteilhafterweise nehmen die Breite und/oder der freie Querschnitt eines ringförmigen Spaltes vom Brennraum bis zur Ausmündung auf der Außenseite der Glieder hin ab, - A -Advantageously, the width and / or the free cross section of an annular gap decreases from the combustion chamber to the outlet on the outside of the links, - A -
um eine Anpassung an das sich mit der Abkühlung verringernde Heizgasvolumen zu erreichen. Die Heizgas berührten Oberflächen der Glieder, mindestens die den Spalt ausbildenden Oberflächen, können mit einer Korrosionsschutzbeschichtung versehen sein.to achieve an adaptation to the cooling gas volume which decreases with the cooling. The heating gas contacted surfaces of the members, at least the gap forming surfaces, may be provided with a corrosion protection coating.
Der Abgassammeiraum auf der Außenseite der Glieder, in welchen die ringförmigen Spalte einmünden, erstreckt sich als Hohlzylinder um die äußeren Mantelflächen der Glieder und wird von einem Mantel nach außen hin begrenzt. Dieser wird zwischen radial nach außen hervorspringenden ringförmigen Stegen auf den Außenseite von Vor- der- und Hinterglied dichtend aufgenommen.The Abgassammeiraum on the outside of the members, in which open the annular column, extends as a hollow cylinder around the outer lateral surfaces of the members and is bounded by a jacket to the outside. This is sealingly received between radially outwardly projecting annular webs on the outside of the front and rear member.
Die zwei Ankerstangen zum Zusammenhalten des Gliederblockes sind innerhalb der Naben angeordnet. Alternativ dazu kann zum Zusammenhalten des Gliederblockes ein innerhalb der Naben angeordnetes Einspeiserohr für Rücklaufwasser und/oder Ent- nahmerohr für Vorlaufwasser dienen, wenn es mit entsprechenden Gewinden zumThe two anchor rods for holding the link block are arranged inside the hubs. Alternatively, for holding the link block, a supply pipe arranged inside the hubs for return water and / or removal pipe for supply water can serve, if it is provided with corresponding threads for
Verspannen der Anordnung versehen ist.Bracing the arrangement is provided.
Zum Ausbilden einer Zwangsdurchströmung können die oberen und unteren Naben zwischen Rücklauf- und Vorlaufanschluss wechselseitig verschlossen werden, wobei dann Verschlussmittel an Ankerstangen, Einspeiserohr und/oder Entnahmerohr ange- bracht sind. Damit wird über die Länge des Gliederblockes eine alternierendes Überströmen zwischen zwei benachbarten Gliedern in der oberen und unteren Nabe sichergestellt.To form a forced flow, the upper and lower hubs between the return and supply ports can be mutually closed, in which case closure means are attached to the anchor rods, feed tube and / or removal tube. Thus, an alternating overflow between two adjacent members in the upper and lower hub is ensured over the length of the link block.
An jedem Glied sind zur Einhaltung eines genauen Spaltmaßes zwischen zwei be- nachbarten Gliedern mindestens zwei Zentrierpunkte oder -flächen vorgesehen, welche die Rohgussabmessungen und Rohgusstoleranzen besonders gut abbildenden. Denn insbesondere die Dicke des Gliedes hat direkten Einfluss auf die Spaltbreite zwischen zwei Gliedern. Diese Zentrierpunkte oder -flächen sind dann für die mechanische Bearbeitung der Dicht- bzw. Anlageflächen an den Naben maßgebend, denn es lässt sich darüber das tatsächlich vorliegende Endmaß nach dem Gießprozess an der entscheidenden Stelle feststellen und dann über die Bearbeitung entsprechend auf das gewünschte und individuell genau passende Sollmaß einstellen. Mit der Erfindung wird ein Gliederheizkessel mit bester Eignung für Brennwertbetrieb geschaffen, bei dem die positiven Werkstoffeigenschaften von Gusseisen oder Aluminium gezielt angewendet und genutzt werden, um gute Wärmeübertragungseigenschaften, Kompaktheit und Robustheit zu gewährleisten. Es werden Korrosion auslö- sende Belastungen aufgefangen. Auch die Korrosionsschutzbeschichtung selbst ist erfindungsgemäß nicht nur einfach aufzubringen und zu kontrollieren, sondern sie wird auch in den Spalten vor möglichen mechanischen Belastungen geschützt. Die Gliederbauweise bietet neben der einfachen Herstellung auch den Vorteil, durch das Einfügen weiterer Mittelglieder unterschiedliche Längen für verschiedene Feuerungs- und Wär- metauscherleistungen variabel abzudecken. Trotzdem bleiben dann alle stirnseitig angeordneten Anbauteile sowie die wasserseitigen Verbindungen gleich. Nur der umgebende Mantel um den Abgassammeiraum variiert. Wegen der niedrigen Abgastemperaturen kann dieser sogar aus Kunststoff hergestellt werden.At least two centering points or surfaces are provided on each member for maintaining an exact gap between two adjacent members, which images the raw casting dimensions and raw casting tolerances particularly well. In particular, the thickness of the limb has a direct influence on the gap width between two limbs. These centering points or surfaces are then decisive for the mechanical processing of the sealing or contact surfaces on the hubs, because it can be about the actual existing final dimension after the casting process at the crucial point determine and then on the processing according to the desired and individual set exactly the right nominal dimension. With the invention, a sectional boiler with the best suitability for condensing operation is created, in which the positive material properties of cast iron or aluminum are selectively applied and used to ensure good heat transfer properties, compactness and robustness. Corrosive loads are absorbed. The anticorrosion coating itself is according to the invention not only easy to apply and control, but it is also protected in the columns from possible mechanical stress. In addition to the simple manufacture, the sectional construction also offers the advantage of variably covering different lengths for different combustion and heat exchanger outputs by inserting further middle links. Nevertheless, then remain all front-mounted attachments and the water-side connections the same. Only the surrounding mantle around the exhaust collection chamber varies. Because of the low exhaust gas temperatures, this can even be made of plastic.
Die Zeichnung stellt ein Ausführungsbeispiel der Erfindung dar. Es zeigt einen Gliederheizkessel aus Gusseisen oder Aluminium:The drawing shows an embodiment of the invention. It shows a sectional boiler made of cast iron or aluminum:
Fig. 1: in einer perspektivischen Gesamtansicht mit einem Schnitt im oberen Eckbereich,1 in a perspective overall view with a section in the upper corner,
Fig. 2: in einem vertikalen Längsschnitt durch eine Hälfte des gesamten Gliederblo- ckes undFIG. 2: in a vertical longitudinal section through one half of the entire link block and FIG
Fig. 3: mit einen Mittelglied in perspektivischer Darstellung.Fig. 3: with an intermediate member in perspective view.
Der Gliederheizkessel besteht im Wesentlichen aus ringförmigen Gliedern, nämlich einem Vorderglied 1, einem deckeiförmigen Hinterglied 2 und mehreren Mittelgliedern 3. Diese bilden einen Brennraum 4 und deren ringförmige Wasserräume 5 stehen miteinander über Naben 6, 6' in Verbindung.The sectional boiler consists essentially of annular members, namely a front member 1, a ceiling-shaped rear member 2 and a plurality of middle members 3. These form a combustion chamber 4 and the annular water chambers 5 are connected to each other via hubs 6, 6 'in connection.
Als Heizgaszüge sind jeweils ringförmige Spalte 7 zwischen zwei benachbarten Gliedern 1, 2, 3 vorgesehen, welche jeweils ausgehend vom Brennraum 4 etwa radial nach außen verlaufen und in einen Abgassammeiraum 8 einmünden. Zum Ausbilden eines ringförmigen Spaltes 7 weisen jeweils zwei benachbarte Glieder 1, 2, 3 eine einander zugeordnete Geometrie auf. Im dargestellten Ausführungsbeispiel entstehen durch die Wölbungen der Glieder 1, 2, 3 vier radial gekrümmte, ringförmige Spalte 7. Der Abgassammeiraum 8 erstreckt sich als Hohlzylinder um die äußeren Mantelflächen der Glieder 1, 2, 3 und wird von einem Mantel 9 nach außen hin begrenzt, welcher zwischen radial nach außen hervorspringenden ringförmigen Stegen 10 auf den Außen- seite von Vorder- und Hinterglied 1, 2 dichtend aufgenommen wird.As Heizgaszüge each annular column 7 between two adjacent members 1, 2, 3 are provided, each extending from the combustion chamber 4 approximately radially outward and open into an exhaust gas collection chamber 8. To form an annular gap 7, two adjacent links 1, 2, 3 each have an associated geometry. In the illustrated embodiment arise by the curvatures of the members 1, 2, 3 four radially curved, annular column. 7 The Abgassammeiraum 8 extends as a hollow cylinder to the outer lateral surfaces of the members 1, 2, 3 and is bounded by a jacket 9 to the outside, which between radially outwardly projecting annular webs 10 on the outer side of the front and rear member 1, 2 is recorded sealing.
Zwei Ankerstangen 11 zum Zusammenhalten des Gliederblockes sind innerhalb der Naben 6, 6' angeordnet. Daran sind scheibenartige Verschlussmittel 12 befestigt, um die oberen und unteren Naben 6, 6' zum Ausbilden einer Zwangsdurchströmung zwi- sehen Rücklauf- und Vorlaufanschluss wechselseitig zu verschließen.Two anchor rods 11 for holding the link block are arranged within the hubs 6, 6 '. At this disc-like closure means 12 are fixed to the upper and lower hubs 6, 6 'to form a forced flow between see return and flow connection to close each other.
Weiterhin befinden sich an jedem Glied 1, 2, 3 zur Einhaltung eines genauen Spaltmaßes zwischen zwei benachbarten Gliedern 1, 2, 3 drei Zentrierflächenflächen 13 an angegossenen Nocken, um darüber die jeweils vorliegenden Abmessungen nach dem Gießvorgang genau zu identifizieren und für die Bearbeitung der Nabenbereiche heranzuziehen. Furthermore, there are at each member 1, 2, 3 for maintaining an exact gap between two adjacent links 1, 2, 3 three centering surfaces 13 of molded cam to accurately identify the respective present dimensions after the casting process and for the processing of the hub areas consulted.

Claims

Ansprüche claims
1. Gliederheizkessel aus Gusseisen oder Aluminium, insbesondere Brennwertkessel, mit im Wesentlichen ringförmigen Gliedern, wobei ein Vorderglied (1), ein deckeiförmiges Hinterglied (2) und mindestens ein Mittelglied (3) vorgesehen sind, die einen Brennraum (4) mit im Wesentlichen umgebenden Heizgaszügen bilden und deren ringförmige Wasserräume (5) miteinander über Naben (6, 6') in Verbindung stehen, mit einem unteren Rücklaufanschluss und einem oberen Vorlauf- anschluss sowie mit mindestens zwei Ankerstangen (11) zum Zusammenhalten des Gliederblockes, dadurch gekennzeichnet, dass als Heizgaszüge jeweils ring- förmige Spalte (7) zwischen zwei benachbarten Gliedern (1, 2, 3) vorgesehen sind, welche jeweils ausgehend vom Brennraum etwa radial nach außen verlaufen und in einen Abgassammeiraum auf der Außenseite der Glieder einmünden.1. Cast iron or aluminum sectional boiler, in particular condensing boiler, with substantially annular members, wherein a front member (1), a decker-shaped rear member (2) and at least one central member (3) are provided, which surround a combustion chamber (4) with substantially Forming hot gas trains and their annular water spaces (5) via hub (6, 6 ') are in communication, with a lower return port and an upper flow port and with at least two anchor rods (11) for holding the link block, characterized in that as Heating gas trains are each annular gaps (7) between two adjacent members (1, 2, 3) are provided, each extending from the combustion chamber approximately radially outwards and open into a Abgassammeiraum on the outside of the members.
2. Gliederheizkessel nach Anspruch 1, dadurch gekennzeichnet, dass zum Ausbil- den eines ringförmigen Spaltes (7) jeweils zwei benachbarte Glieder (1, 2, 3) eine einander zugeordnete Geometrie aufweisen.2. Sectional heating boiler according to claim 1, characterized in that for the formation of an annular gap (7) each two adjacent members (1, 2, 3) have an associated geometry.
3. Gliederheizkessel nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass ein ringförmiger Spalt (7) im rechten Winkel zur Mittelachse des Brennraumes (4) radial und gerade nach außen verläuft.3. sectional boiler according to claims 1 or 2, characterized in that an annular gap (7) at right angles to the central axis of the combustion chamber (4) extends radially and straight outwards.
4. Gliederheizkessel nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass ein ringförmiger Spalt (7) radial gekrümmt nach außen verläuft.4. sectional boiler according to claims 1 or 2, characterized in that an annular gap (7) extends radially outwardly curved.
5. Gliederheizkessel nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass ein ringförmiger Spalt (7) mit Schrägstellung zur Mittelachse des Brennraumes (4) gerade nach außen verläuft. 5. sectional boiler according to claims 1 or 2, characterized in that an annular gap (7) with an inclination to the central axis of the combustion chamber (4) extends straight outwards.
6. Gliederheizkessel nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass ein ringförmiger Spalt (7) in radialer Richtung wellenförmig nach außen verläuft.6. sectional boiler according to claims 1 or 2, characterized in that an annular gap (7) extends in the radial direction wavy outward.
7. Gliederheizkessel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Breite und/oder der freie Querschnitt eines ringförmigen Spaltes (7) vom7. sectional boiler according to one of claims 1 to 6, characterized in that the width and / or the free cross-section of an annular gap (7) from
Brennraum (4) bis zur Ausmündung auf der Außenseite der Glieder (1, 2, 3) hin abnehmen.Remove the combustion chamber (4) to the outlet on the outside of the links (1, 2, 3).
8. Gliederheizkessel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Heizgas berührten Oberflächen der Glieder (1, 2, 3), mindestens die den8. sectional boiler according to one of claims 1 to 7, characterized in that the heating gas touched surfaces of the members (1, 2, 3), at least the
Spalt (7) ausbildenden Oberflächen, mit einer Korrosionsschutzbeschichtung versehen sind.Gap (7) forming surfaces are provided with a corrosion protection coating.
9. Gliederheizkessel nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Abgassammeiraum (8) auf der Außenseite der Glieder (1, 2, 3), in welchen die ringförmigen Spalte (7) einmünden, sich als Hohlzylinder um die äußeren Mantelflächen der Glieder (1, 2, 3) erstreckt und von einem Mantel (9) nach außen hin begrenzt wird, welcher zwischen radial nach außen hervorspringenden ringförmigen Stegen (10) auf den Außenseite von Vorder- und Hinterglied (1, 2) dichtend aufgenommen wird.9. sectional boiler according to one of claims 1 to 8, characterized in that the Abgassammeiraum (8) on the outside of the members (1, 2, 3), in which open the annular column (7), as a hollow cylinder around the outer lateral surfaces the limbs (1, 2, 3) and bounded by a jacket (9) to the outside, which is sealingly received between radially outwardly projecting annular webs (10) on the outside of the front and rear member (1, 2) ,
10. Gliederheizkessel nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die zwei Ankerstangen (11) zum Zusammenhalten des Gliederblockes innerhalb der Naben (6, 6') angeordnet sind.10. sectional boiler according to one of claims 1 to 9, characterized in that the two anchor rods (11) for holding the link block within the hubs (6, 6 ') are arranged.
11. Gliederheizkessel nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass zum Zusammenhalten des Gliederblockes ein innerhalb der Naben (6, 6') angeordnetes Einspeiserohr für Rücklaufwasser und/oder Entnahmerohr für Vorlaufwasser dient.11. Sectional boiler according to one of claims 1 to 10, characterized in that for holding the link block within the hubs (6, 6 ') arranged feed pipe for return water and / or discharge pipe for supply water is used.
12. Gliederheizkessel nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die oberen und unteren Naben (6, 6') zum Ausbilden einer Zwangsdurchströmung zwischen Rücklauf- und Vorlaufanschluss wechselseitig verschlossen sind, wobei Verschlussmittel (12) an Ankerstangen (11), Einspeiserohr und/oder Entnahmerohr angebracht sind.12. sectional boiler according to one of claims 1 to 11, characterized in that the upper and lower hubs (6, 6 ') to form a forced flow between the return and flow connection mutually closed with closure means (12) attached to anchor rods (11), feed tube and / or extraction tube.
13. Gliederheizkessel nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass an jedem Glied (1, 2, 3) zur Einhaltung eines genauen Spaltmaßes zwischen zwei benachbarten Gliedern (1, 2, 3) mindestens zwei die Rohgussabmessungen und Rohgusstoleranzen abbildenden Zentrierpunkte oder -flächen (13) vorgesehen sind, und dass diese Zentrierpunkte oder -flächen (13) für die mechanische Bearbeitung der Dicht- bzw. Anlageflächen an den Naben (6, 6') maßgebend sind. 13. The sectional boiler according to claim 1, wherein at least two centering points or the raw casting dimensions and raw casting tolerances are formed on each member (1, 2, 3) to maintain an exact gap between two adjacent members (1, 2, 3) -flächen (13) are provided, and that these centering points or surfaces (13) for the mechanical processing of the sealing or contact surfaces on the hubs (6, 6 ') are authoritative.
EP09717341.3A 2008-03-07 2009-02-24 Cast-iron or aluminium sectional boiler Active EP2250448B1 (en)

Applications Claiming Priority (2)

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DE102008013086A DE102008013086A1 (en) 2008-03-07 2008-03-07 Cast iron or aluminum sectional boilers
PCT/EP2009/052175 WO2009109486A1 (en) 2008-03-07 2009-02-24 Cast-iron or aluminium sectional boiler

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EP2250448A1 true EP2250448A1 (en) 2010-11-17
EP2250448B1 EP2250448B1 (en) 2016-09-07

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US (1) US20110139093A1 (en)
EP (1) EP2250448B1 (en)
CN (1) CN101960228B (en)
DE (1) DE102008013086A1 (en)
RU (1) RU2495336C2 (en)
WO (1) WO2009109486A1 (en)

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RU2010140845A (en) 2012-04-20
DE102008013086A1 (en) 2009-09-10
WO2009109486A1 (en) 2009-09-11
EP2250448B1 (en) 2016-09-07
CN101960228A (en) 2011-01-26
US20110139093A1 (en) 2011-06-16
RU2495336C2 (en) 2013-10-10
CN101960228B (en) 2013-10-30

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