EP0679845A2 - Three-pass boiler - Google Patents

Three-pass boiler Download PDF

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Publication number
EP0679845A2
EP0679845A2 EP95105793A EP95105793A EP0679845A2 EP 0679845 A2 EP0679845 A2 EP 0679845A2 EP 95105793 A EP95105793 A EP 95105793A EP 95105793 A EP95105793 A EP 95105793A EP 0679845 A2 EP0679845 A2 EP 0679845A2
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EP
European Patent Office
Prior art keywords
train
chamber
combustion chamber
diameter
housing
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Application number
EP95105793A
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German (de)
French (fr)
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EP0679845A3 (en
Inventor
Karl Heinz Schelberg
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Viessmann Werke GmbH and Co KG
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Viessmann Werke GmbH and Co KG
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Publication of EP0679845A2 publication Critical patent/EP0679845A2/en
Publication of EP0679845A3 publication Critical patent/EP0679845A3/en
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    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water 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
    • F24H1/26—Water 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 forming an integral body
    • F24H1/28—Water 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 forming an integral body including one or more furnace or fire tubes
    • F24H1/285—Water 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 forming an integral body including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber

Definitions

  • the invention relates to a three-pass boiler, consisting of a water-carrying housing with a combustion chamber, deflection chamber, starting from this second train, overflow chamber and starting from this, with a third train leading to the exhaust gas connection in the form of a plurality of small-diameter individual pipes.
  • Such three-pass boilers are known, for example, according to DE-U-93 04 468.
  • the three trains and also the deflection and overflow chambers can be implemented in different ways, which ultimately depends on it whether it is a reversing combustion chamber or a combustion chamber open at the rear, from the rear open end of which the heating gases flow forward to the deflection chamber, from which, in such cases, the heating gases flow in such boilers into the third train, either over the combustion chamber or can also be arranged below this.
  • Special measures additional double-skin heating surface make it possible to operate such boilers and the associated heating system with a relatively high degree of annual utilization.
  • the invention is based on three-pass boilers of the type mentioned, the task of improving such a three-pass boiler in such a way that the design saves weight and weld seams in particular and integration of the deflection chamber requires less effort and the overflow chamber has a comparatively larger water-cooled area from the second to the third train with comparatively equally good accessibility.
  • the second train in the form of a single tube with a smaller in relation to the diameter of the combustion chamber and in relation to the diameter of the individual tubes of the third train is substantially larger diameter, which with a manifold piece forming the deflection chamber is connected at the end region of the combustion chamber to its peripheral wall provided with a corresponding opening and with its other end opens into the overflow chamber, which is covered with an insulated closure cover at the front of the boiler, the other boundary walls of which are arranged in the water-carrying interior of the housing.
  • the otherwise complex deflection chamber is replaced by a simple elbow piece, which is only possible in that the second train no longer consists of a large number of individual tubes, but only of a single tube with a correspondingly large diameter, which in particular involves the amount of welding work significantly reduced and ultimately the space required for this in the water-carrying housing.
  • the overflow chamber from the second to the third train is no longer attached to the outside of the boiler housing, but protrudes into the water-bearing interior, attached to the water on the front wall of the housing, i.e. the remaining boundary walls of this overflow chamber are cooled down to the sealing cover and require what the side walls of these Chamber concerns, no external isolation.
  • combustion chamber is arranged in one half with respect to the vertical longitudinal center plane of the housing and the third train extending over the second train in the other half, and on the other hand the elbow section of the second train under 40 - 50 °, preferably 45 °, is connected to the peripheral wall of the combustion chamber.
  • the three-pass boiler consists in a conventional manner of a water-carrying housing 1 with combustion chamber 2, deflection chamber 3, from this starting second train 4, overflow chamber 5 and starting from this, with a third train 7 leading to the exhaust gas connection 6 in the form of a plurality of smaller-diameter individual pipes 7 '.
  • the present differs, and as can be seen in particular from Fig. 1, that the second train 4 in the form of a single tube 4 'with smaller in relation to the diameter D of the combustion chamber 2 and in relation to the diameter D1 the individual tubes 7 'of the third train 7 is of substantially larger diameter D2.
  • This single pipe is connected to a manifold piece 8 forming the deflection chamber 3 at the end region 2 'of the combustion chamber 2 to its peripheral wall 2' 'provided with a corresponding opening 8'.
  • the pipe 4 ′ opens into the overflow chamber 5, which is covered with an insulated closure cover 9 at the front of the boiler and whose other boundary walls 10 are arranged in the water-carrying interior 11 of the housing.
  • the diameter D2 of the second train forming single pipe 4 ' is, for example. 30 cm and the diameter D of the combustion chamber, for example, 70 cm, while the third train forming individual pipes 7' have a diameter D1 of, for example, only 6 cm.
  • the entire package of individual tubes 7 'for the third train is arranged such that, in addition to the upper boundary wall 10, the other boundary walls of the overflow chamber 5, as can be seen in FIG. 2, can be dimensioned as long as possible by means of an arcuate design.
  • the combustion chamber 2 and the trains 4 and 7 are assigned, as can also be seen from FIG. 2, in such a way that the combustion chamber 2 with respect to the vertical longitudinal center plane 12 of the housing 1 in one half and that which extends over the second train 4 third train 7 is arranged in the other half.
  • This assignment and arrangement is essentially and how shown below the upper third in the water-carrying housing 1 in order to create a sufficiently large vapor space there.
  • the manifold piece 8 of the second train 4 which simplifies the whole construction, is connected in the exemplary embodiment at 45 ° to the peripheral wall 2 ′′ of the combustion chamber 2, which, in contrast to conventional three-pass boilers, has a bottom 13 which, as illustrated, on the rear wall 14 of the housing , is anchored.

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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)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

The third draught takes the form of several smaller dia. individual pipes (7'). The second draught (4) is formed as an individual pipe (4') with a smaller dia. in relation to that (D) of the combustion chamber (2) and a larger dia. (D2) in relation to the dia. of the individual pipes of the third draught. The second draught is connected to a curvature piece forming the deflector chamber (3) at the end area (2') of the combustion chamber. With its other end (4") the second draught issues in the overflow chamber (5) in the boiler front side and covered with an insulated closure cover (9).

Description

Die Erfindung betrifft einen Dreizugheizkessel, bestehend aus einem wasserführenden Gehäuse mit Brennkammer, Umlenkkammer, von dieser ausgehendem zweiten Zug, Überströmkammer und von dieser ausgehend, mit einem zum Abgasanschluß führenden dritten Zug in Form einer Mehrzahl durchmesserkleiner Einzelrohre.The invention relates to a three-pass boiler, consisting of a water-carrying housing with a combustion chamber, deflection chamber, starting from this second train, overflow chamber and starting from this, with a third train leading to the exhaust gas connection in the form of a plurality of small-diameter individual pipes.

Derartige Dreizugheizkessel sind bspw. nach dem DE-U-93 04 468 bekannt. Abgesehen von der speziellen Bauweise des Dreizugheizkessels nach diesem DE-U-93 04 468 (der zweite Zug umgibt in Einzelzüge aufgegliedert die Brennkammer), können die drei Züge und auch die Umlenk- und Überströmkammern auf unterschiedliche Weise verwirklicht sein, was letztlich davon abhängig ist, ob es sich um eine Umkehrbrennkammer oder eine hinten offene Brennkammer handelt, von deren hinten offenen Ende die Heizgase nach vorn zur Umlenkkammer strömen, von der aus in allen Fällen bei solchen Kesseln die Heizgase in den dritten Zug strömen, der entweder über der Brennkammer oder auch unter dieser verlaufend angeordnet sein kann. Durch besondere Maßnahmen (zweischalige zusätzliche Heizfläche) ist es bereits möglich, solche Heizkessel und die zugehörige Heizungsanlage mit einem relativ hohen Jahresnutzungsgrad zu betreiben.Such three-pass boilers are known, for example, according to DE-U-93 04 468. Apart from the special design of the three-pass boiler according to this DE-U-93 04 468 (the second train surrounds the combustion chamber broken down into individual trains), the three trains and also the deflection and overflow chambers can be implemented in different ways, which ultimately depends on it whether it is a reversing combustion chamber or a combustion chamber open at the rear, from the rear open end of which the heating gases flow forward to the deflection chamber, from which, in such cases, the heating gases flow in such boilers into the third train, either over the combustion chamber or can also be arranged below this. Special measures (additional double-skin heating surface) make it possible to operate such boilers and the associated heating system with a relatively high degree of annual utilization.

Bei der Gestaltung der Umlenkkammer im Übergang von der Brennkammer zum zweiten Zug, sind, abgesehen vom Dreizugheizkessel nach dem vorerwähnten DE-U-93 04 468, spezielle Umlenkkästen üblich, die sich konstruktiv aufwendig im wasserführenden Innenraum der wasserfühenden Gehäuse befinden. Was die brennerseitigen Überströmkammern am Übergang vom zweiten zum dritten Zug betrifft, so sind diese, soweit bekannt, als separate, nach außen isolierte Kästen kesselfrontseitig angesetzt und erfahren eine Kühlung nur durch die relativ kleine Restfläche der Gehäusevorderwand, deren Flachenreduzierung durch die Einmündungen des zweiten und dritten Zuges (beide bestehend aus einer Vielzahl von durchmesserkleinen Einzelrohren) bedingt ist.When designing the deflection chamber in the transition from the combustion chamber to the second train, apart from the three-pass boiler according to the aforementioned DE-U-93 04 468, special deflection boxes are customary, which are structurally complex in the water-carrying interior of the water-carrying housing. As far as the burner-side overflow chambers at the transition from the second to the third train are concerned, these are, as far as is known, attached as separate boxes insulated from the outside of the boiler and are cooled only by the relatively small remaining area of the front wall of the housing, the area of which is reduced by the openings of the second and third train (both consisting of a large number of small-diameter single pipes) is required.

Der Erfindung liegt, ausgehend von Dreizugheizkesseln der eingangs genannten Art, die Aufgabe zugrunde, einen derartigen Dreizugheizkessel dahingehend zu verbessern, daß bei gewichts- und schweißnahtsparender Konstruktion insbesondere die Gestaltung und Einbindung der Umlenkkammer einen geringeren Aufwand verlangt und die Überströmkammer vom zweiten zum dritten Zug bei vergleichsweise gleich guter Zugänglichkeit eine vergleichsweise größere wassergekühlte Fläche aufweist.The invention is based on three-pass boilers of the type mentioned, the task of improving such a three-pass boiler in such a way that the design saves weight and weld seams in particular and integration of the deflection chamber requires less effort and the overflow chamber has a comparatively larger water-cooled area from the second to the third train with comparatively equally good accessibility.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß der zweite Zug in Form eines Einzelrohres mit in bezug auf den Durchmesser der Brennkammer kleinerem und in bezug auf den Durchmesser der Einzelrohre des dritten Zuges wesentlich größerem Durchmesser ausgebildet ist, das mit einem die Umlenkkammer bildenden Krümmerstück am Endbereich der Brennkammer an deren mit einer entsprechenden Öffnung versehenen Umfangswand angeschlossen ist und mit seinem anderen Ende in die kesselfrontseitig mit einem isolierten Verschlußdeckel abgedeckelte Überströmkammer einmündet, deren andere Begrenzungswände im wasserführenden Innenraum des Gehäuses angeordnet sind.This object is achieved according to the invention in that the second train in the form of a single tube with a smaller in relation to the diameter of the combustion chamber and in relation to the diameter of the individual tubes of the third train is substantially larger diameter, which with a manifold piece forming the deflection chamber is connected at the end region of the combustion chamber to its peripheral wall provided with a corresponding opening and with its other end opens into the overflow chamber, which is covered with an insulated closure cover at the front of the boiler, the other boundary walls of which are arranged in the water-carrying interior of the housing.

Bei dieser erfindungsgemäßen Ausbildung ist die sonst aufwendige Umlenkkammer durch ein einfaches Krümmerstück ersetzt, was nur dadurch möglich ist, daß der zweite Zug nicht mehr aus einer Vielzahl von Einzelrohren besteht, sondern nur aus einem bezüglich seines Durchmessers entsprechend groß dimensionierten Einzelrohr, was insbesondere den Schweißarbeitsaufwand wesentlich reduziert und letztlich auch den Raumbedarf dafür im wasserführenden Gehäuse. Außerdem ist die Überströmkammer vom zweiten zum dritten Zug nicht mehr außen am Kesselgehäuse angesetzt, sondern ragt, wasserseitig an der Gehäusevorderwand angesetzt, in den wasserführenden Innenraum, d.h., bis auf den Verschlußdeckel sind die restlichen Begrenzungswände dieser Überströmkammer gekühlt und bedürfen, was die Flankenwände dieser Kammer betrifft, keiner äußeren Isolation.In this embodiment of the invention, the otherwise complex deflection chamber is replaced by a simple elbow piece, which is only possible in that the second train no longer consists of a large number of individual tubes, but only of a single tube with a correspondingly large diameter, which in particular involves the amount of welding work significantly reduced and ultimately the space required for this in the water-carrying housing. In addition, the overflow chamber from the second to the third train is no longer attached to the outside of the boiler housing, but protrudes into the water-bearing interior, attached to the water on the front wall of the housing, i.e. the remaining boundary walls of this overflow chamber are cooled down to the sealing cover and require what the side walls of these Chamber concerns, no external isolation.

Vorteilhafte weitere Ausgestaltungen bestehen darin, daß zum einen die Brennkammer in bezug auf die vertikale Längsmittelebene des Gehäuses in der einen Hälfte und der sich über dem zweiten Zug erstreckende dritte Zug in der anderen Hälfte angeordnet ist und daß zum anderen das Krümmerstück des zweiten Zuges unter 40 - 50°, vorzugsweise 45°, an die Umfangswand der Brennkammer angeschlossen ist. Beide Maßgaben tragen zu einer kompakten und damit raumsparenden Bauweise bei, und die zweite Maßgabe führt zu einer einfachen, nahezu kreisförmigen Durchdringungskurve für den Anschluß des Krümmerstückes an die Wand der Brennkammer.Advantageous further refinements consist in that, on the one hand, the combustion chamber is arranged in one half with respect to the vertical longitudinal center plane of the housing and the third train extending over the second train in the other half, and on the other hand the elbow section of the second train under 40 - 50 °, preferably 45 °, is connected to the peripheral wall of the combustion chamber. Both requirements contribute to a compact and thus space-saving design, and the second requirement leads to a simple, almost circular penetration curve for the connection of the elbow piece to the wall of the combustion chamber.

Zusammenfassend werden mit der erfindungsgemäßen Ausbildung des Dreizugheizkessels folgende Vorteile erreicht:
Es wird keine Umlenkkammer herkömmlicher Art für den Übergang von der Brennkammer zum zweiten Zug benötigt.
Der zweite Zug ist als Kanal in Form nur eines Rohres mit großem Durchmesser ausgeführt.
Wassergekühlte Umlenkung vom zweiten zum dritten Zug, statt der üblichen, vor die Wasserwand gesetzten "trockenen" Umlenkung.
Geringerer Kesseldurchmesser durch Ausführung des zweiten Zuges als zylindrischer Kanal, statt vielen Einzelrohren.
Geringere Abstrahlverluste durch wassergekühlte vordere Überströmkammer.
Geringerer Wartungsaufwand durch weniger Rohre und wassergekühlte Vorderwand.
Insgesamt geringeres Kesselgewicht (ca. 10 % gegenüber vergleichbaren konventionellen Kesseln).
Weniger Schweißnähte (ca. 15 %) und einfacherer Aufbau als bei konventionellen Kesseln.
Großer Dampfraum bei geringeren Kesselabmessungen.In summary, the following advantages are achieved with the design of the three-pass boiler according to the invention:
No conventional deflection chamber is required for the transition from the combustion chamber to the second train.
The second train is designed as a channel in the form of a tube with a large diameter.
Water-cooled redirection from the second to the third train instead of the usual "dry" redirection in front of the water wall.
Smaller boiler diameter due to the design of the second train as a cylindrical channel instead of many individual pipes.
Lower radiation losses thanks to the water-cooled front overflow chamber.
Less maintenance due to fewer pipes and water-cooled front wall.
Overall lower boiler weight (approx. 10% compared to comparable conventional boilers).
Less weld seams (approx. 15%) and simpler construction than with conventional boilers.
Large steam room with smaller boiler dimensions.

Der erfindungsgemäße Dreizugheizkessel wird nachfolgend anhand der zeichnerischen Darstellung eines Ausführungsbeispieles näher erläutert.The three-pass boiler according to the invention is explained in more detail below with reference to the drawing of an embodiment.

Es zeigt

Fig. 1
einen Längsschnitt durch den Dreizugheizkessel;
Fig. 2
einen Schnitt längs Linie II-II in Fig. 1 und
Fig. 3
einen Längsschnitt durch den oberen Teil der Überströmkammer.
It shows
Fig. 1
a longitudinal section through the three-pass boiler;
Fig. 2
a section along line II-II in Fig. 1 and
Fig. 3
a longitudinal section through the upper part of the overflow chamber.

Der Dreizugheizkessel besteht in herkömmlicher Weise aus einem wasserführenden Gehäuse 1 mit Brennkammer 2, Umlenkkammer 3, von dieser ausgehendem zweiten Zug 4, Überströmkammer 5 und von dieser ausgehend, mit einem zum Abgasanschluß 6 führenden dritten Zug 7 in Form einer Mehrzahl durchmesserkleinerer Einzelrohre 7'.The three-pass boiler consists in a conventional manner of a water-carrying housing 1 with combustion chamber 2, deflection chamber 3, from this starting second train 4, overflow chamber 5 and starting from this, with a third train 7 leading to the exhaust gas connection 6 in the form of a plurality of smaller-diameter individual pipes 7 '.

Gegenüber diesem allgemeinen Bauprinzip von Dreizugheizkesseln unterscheidet sich der vorliegende dadurch, und wie insbesondere aus Fig. 1 ersichtlich, daß der zweite Zug 4 in Form eines Einzelrohres 4' mit in bezug auf den Durchmesser D der Brennkammer 2 kleinerem und in bezug auf den Durchmesser D₁ der Einzelrohre 7' des dritten Zuges 7 wesentlich größerem Durchmesser D₂ ausgebildet ist.Compared to this general construction principle of three-pass boilers, the present differs, and as can be seen in particular from Fig. 1, that the second train 4 in the form of a single tube 4 'with smaller in relation to the diameter D of the combustion chamber 2 and in relation to the diameter D₁ the individual tubes 7 'of the third train 7 is of substantially larger diameter D₂.

Dieses Einzelrohr ist mit einem die Umlenkkammer 3 bildenden Krümmerstück 8 am Endbereich 2' der Brennkammer 2 an deren mit einer entsprechenden Öffnung 8' versehenen Umfangswand 2'' angeschlossen. Mit seinem anderen Ende 4'' mündet das Rohr 4' in die kesselfrontseitig mit einem isolierten Verschlußdeckel 9 abgedeckelte Überströmkammer 5, deren andere Begrenzungswände 10 im wasserführenden Innenraum 11 des Gehäuses angeordnet sind.This single pipe is connected to a manifold piece 8 forming the deflection chamber 3 at the end region 2 'of the combustion chamber 2 to its peripheral wall 2' 'provided with a corresponding opening 8'. With its other end 4 ″, the pipe 4 ′ opens into the overflow chamber 5, which is covered with an insulated closure cover 9 at the front of the boiler and whose other boundary walls 10 are arranged in the water-carrying interior 11 of the housing.

Der Durchmesser D₂ des den zweiten Zug bildenden Einzelrohres 4' beträgt bspw. 30 cm und der Durchmesser D der Brennkammer bspw. 70 cm, während die den dritten Zug bildenden Einzelrohre 7' einen Durchmesser D₁ von bspw. nur 6 cm haben. Das ganze Paket von Einzelrohren 7' für den dritten Zug ist so angeordnet, daß außer der oberen Begrenzungswand 10 die anderen Begrenzungswände der Überströmkammer 5, wie aus Fig. 2 ersichtlich, durch kreisbogenförmige Gestaltung möglichst lang bemessen werden können.The diameter D₂ of the second train forming single pipe 4 'is, for example. 30 cm and the diameter D of the combustion chamber, for example, 70 cm, while the third train forming individual pipes 7' have a diameter D₁ of, for example, only 6 cm. The entire package of individual tubes 7 'for the third train is arranged such that, in addition to the upper boundary wall 10, the other boundary walls of the overflow chamber 5, as can be seen in FIG. 2, can be dimensioned as long as possible by means of an arcuate design.

Die Brennkammer 2 und die Züge 4 und 7 erhalten eine Zuordnung, wie ebenfalls aus Fig. 2 ersichtlich, derart, daß die Brennkammer 2 in bezug auf die vertikale Längsmittelebene 12 des Gehäuses 1 in der einen Hälfte und der sich über dem zweiten Zug 4 erstreckende dritte Zug 7 in der anderen Hälfte angeordnet ist. Diese Zu- und Anordnung erfolgt dabei im wesentlichen und wie dargestellt unterhalb des oberen Drittels im wasserführenden Gehäuse 1, um dort einen ausreichend großen Dampfraum zu schaffen.The combustion chamber 2 and the trains 4 and 7 are assigned, as can also be seen from FIG. 2, in such a way that the combustion chamber 2 with respect to the vertical longitudinal center plane 12 of the housing 1 in one half and that which extends over the second train 4 third train 7 is arranged in the other half. This assignment and arrangement is essentially and how shown below the upper third in the water-carrying housing 1 in order to create a sufficiently large vapor space there.

Das die ganze Konstruktion wesentlich vereinfachende Krümmerstück 8 des zweiten Zuges 4 ist beim Ausführungsbeispiel unter 45° an die Umfangswand 2'' der Brennkammer 2 angeschlossen, die im Gegensatz zu herkömmlichen Dreizugheizkesseln einen Boden 13 aufweist, der an der Gehäuserückwand 14, wie bspw. dargestellt, verankert ist.The manifold piece 8 of the second train 4, which simplifies the whole construction, is connected in the exemplary embodiment at 45 ° to the peripheral wall 2 ″ of the combustion chamber 2, which, in contrast to conventional three-pass boilers, has a bottom 13 which, as illustrated, on the rear wall 14 of the housing , is anchored.

Claims (4)

Dreizugheizkessel, bestehend aus einem wasserführenden Gehäuse (1) mit Brennkammer (2), Umlenkkammer (3), von dieser ausgehendem zweiten Zug (4), Überströmkammer (5) und von dieser ausgehend, mit einem zum Abgasanschluß (6) führenden dritten Zug (7) in Form einer Mehrzahl durchmesserkleinerer Einzelrohre (7'),
dadurch gekennzeichnet,
daß der zweite Zug (4) in Form eines Einzelrohres (4') mit in bezug auf den Durchmesser (D) der Brennkammer (2) kleinerem und in bezug auf den Durchmesser (D₁) der Einzelrohre (7') des dritten Zuges (7) wesentlich größerem Durchmesser (D₂) ausgebildet ist, das mit einem, die Umlenkkammer (3) bildenden Krümmerstück (8) am Endbereich (2') der Brennkammer (2) an deren mit einer entsprechenden Öffnung (8') versehenen Umfangswand (2'') angeschlossen ist und mit seinem anderen Ende (4'') in die kesselfrontseitig mit einem isolierten Verschlußdeckel (9) abgedeckelte Überströmkammer (5) einmündet, deren andere Begrenzungswände (10) im wasserführenden Innenraum (11) des Gehäuses (1) angeordnet sind.Three-pass boiler, consisting of a water-bearing housing (1) with a combustion chamber (2), deflection chamber (3), a second train (4), an overflow chamber (5) starting from this, and a third train leading to the exhaust gas connection (6) ( 7) in the form of a plurality of smaller-diameter individual tubes (7 '),
characterized,
that the second train (4) in the form of a single tube (4 ') with smaller in relation to the diameter (D) of the combustion chamber (2) and in relation to the diameter (D₁) of the individual tubes (7') of the third train (7 ) Much larger diameter (D₂) is formed, which has a manifold piece (8) forming the deflection chamber (3) at the end region (2 ') of the combustion chamber (2) on its peripheral wall (2') provided with a corresponding opening (8 '). ') is connected and with its other end (4'') opens into the overflow chamber (5), which is covered with an insulated closure cover (9) and whose other boundary walls (10) are arranged in the water-carrying interior (11) of the housing (1) . Dreizugheizkessel nach Anspruch 1,
dadurch gekennzeichnet,
daß die Brennkammer (2) in bezug auf die vertikale Längsmittelebene (12) des Gehäuses (1) in der einen Hälfte und der sich über dem zweiten Zug (4) erstreckende dritte Zug (7) in der anderen Hälfte angeordnet ist.Three-pass boiler according to claim 1,
characterized,
that the combustion chamber (2) with respect to the vertical longitudinal center plane (12) of the housing (1) in one half and the third train (4) extending over the second train (7) is arranged in the other half. Dreizugheizkessel nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Krümmerstück (8) des zweiten Zuges (4) unter 40 - 50°, vorzugsweise 45° an die Umfangswand (2'') der Brennkammer (2) angeschlossen ist.Three-pass boiler according to claim 1 or 2,
characterized in that the elbow section (8) of the second train (4) is connected at 40-50 °, preferably 45 °, to the peripheral wall (2 '') of the combustion chamber (2). Dreizugheizkessel nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß bis auf die obere die seitlichen Begrenzungswände (10) der Überströmkammer (5) kreisbogenförmig ausgebildet sind.Three-pass boiler according to one of claims 1 to 3,
characterized,
that, except for the upper, the lateral boundary walls (10) of the overflow chamber (5) are designed in the shape of a circular arc.
EP95105793A 1994-04-27 1995-04-19 Three-pass boiler. Withdrawn EP0679845A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414641 1994-04-27
DE19944414641 DE4414641C1 (en) 1994-04-27 1994-04-27 Three-pass boiler

Publications (2)

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EP0679845A2 true EP0679845A2 (en) 1995-11-02
EP0679845A3 EP0679845A3 (en) 1996-01-24

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EP95105793A Withdrawn EP0679845A3 (en) 1994-04-27 1995-04-19 Three-pass boiler.

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EP (1) EP0679845A3 (en)
DE (1) DE4414641C1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL279673A (en) * 1961-06-13 1900-01-01
FR90607E (en) * 1966-03-21 1968-01-19 Ideal Standard Improvements relating to hot water, superheated water or steam generators
GB1165178A (en) * 1966-02-02 1969-09-24 American Radiator & Standard Improvements in and relating to Steam or Hot Water Boilers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9304468U1 (en) * 1993-03-24 1993-06-17 Viessmann Werke GmbH & Co, 3559 Allendorf Three-pass boiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL279673A (en) * 1961-06-13 1900-01-01
GB1165178A (en) * 1966-02-02 1969-09-24 American Radiator & Standard Improvements in and relating to Steam or Hot Water Boilers
FR90607E (en) * 1966-03-21 1968-01-19 Ideal Standard Improvements relating to hot water, superheated water or steam generators

Also Published As

Publication number Publication date
EP0679845A3 (en) 1996-01-24
DE4414641C1 (en) 1995-05-11

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