EP0304909B1 - Chimney cowl - Google Patents

Chimney cowl Download PDF

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Publication number
EP0304909B1
EP0304909B1 EP88113850A EP88113850A EP0304909B1 EP 0304909 B1 EP0304909 B1 EP 0304909B1 EP 88113850 A EP88113850 A EP 88113850A EP 88113850 A EP88113850 A EP 88113850A EP 0304909 B1 EP0304909 B1 EP 0304909B1
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EP
European Patent Office
Prior art keywords
cover plate
wall structure
wall
casing
chimney cowl
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
EP88113850A
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German (de)
French (fr)
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EP0304909A2 (en
EP0304909A3 (en
Inventor
Josef Voit
Josef Schopf
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Erlus Baustoffwerke AG
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Erlus Baustoffwerke AG
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Priority to AT88113850T priority Critical patent/ATE58587T1/en
Publication of EP0304909A2 publication Critical patent/EP0304909A2/en
Publication of EP0304909A3 publication Critical patent/EP0304909A3/en
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Publication of EP0304909B1 publication Critical patent/EP0304909B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F23J13/02—Linings; Jackets; Casings

Definitions

  • the invention relates to a chimney head structure with a cantilever plate fastened under the upper end of the flue pipe and the casing enclosing the flue pipe, a wall surrounding the casing supported on the cantilever plate and a cover plate resting on the wall, which has an opening for the passage of the flue gases.
  • the wall and the cover plate serve to keep weather influences away from the upper end of the chimney jacket and to prevent the thermal insulation properties of the jacket and the thermal insulation located between the jacket and the flue pipe from being impaired. In particular, it should be prevented that moisture enters the thermal insulation through the jacket and eliminates its ability to prevent condensation of the flue gases at the upper end of the flue pipe if possible.
  • the wall which can be constructed from clinker bricks, bricks with plaster and the like, encloses the jacket relatively closely and the cover plate either closes with its edge with the outer surface of the wall and is mortared with it or force beyond the outside of the wall and has a pulled-down edge with a drip or water nose.
  • the invention has for its object to further improve the thermal insulation at the top of the chimney.
  • the wall surrounds the chimney jacket at a distance and forms a ventilation space with it that air inlet openings are provided at the lower end of the wall and / or in the cantilever plate and air outlet openings are provided at the upper end of the wall and / or in the cover plate , each of which is connected to the ventilation space.
  • the invention is based on the consideration that to reliably avoid the formation of condensate in the area of the upper end of the chimney not only measures are required which bring about thermal insulation in the area of the greatest temperature gradient between the flue pipe and the environment, but also that the chimney jacket must be ensured itself, ie outside the thermal insulation layer arranged between the chimney jacket and the flue pipe, is kept as insulating as possible.
  • the invention proposes to move the already existing wall of the chimney jacket away from the jacket to such an extent that a ventilation space is created between the wall and the jacket, which will normally be a continuous annular space in the circumferential direction, and air inlet openings at the lower end of the wall and / or in the cantilever plate to be arranged, which correspond to air outlet openings at the upper end of the wall and / or in the cover plate.
  • the walling of the chimney head structure according to the invention also protects the chimney jacket not only from moisture, but also from cooling, which could arise between the wall and the jacket solely by heat transfer, especially in wind. Possibly. can be provided in the context of the invention in the ventilation space on the outside of the jacket insulation layer.
  • the air inlet openings at the lower end of the wall are formed by vertical butt joints between the bricks of the lowest brick layer, which are deliberately kept free of mortar. This does not affect the load-bearing capacity of the wall.
  • the air inlet openings can also be through holes in the cantilever plate in the area that enables a connection to the ventilation space.
  • the air outlet openings can be formed by horizontal slots between the cover plate and the wall, according to an expedient and also easy to carry out further development, the cover plate preferably projecting on all sides over the upper end of the wall in a manner known per se, but according to the invention by means of downwards protruding bases or feet supported on the wall. The slots are thus automatically formed between these bases or feet after the cover plate has been put on.
  • the chimney shown in FIG. 1 is constructed as a finished chimney from individual smoke pipe sections 1, casing stones 2 and a heat insulation layer in the form of insulation layer shells 3, which is used between the smoke pipe sections 1 and the casing stones 2.
  • a cantilever plate 4 e.g. made of concrete, used and mortared with these coat stones.
  • the cantilever plate 4 has a central opening which tightly surrounds the thermal insulation layer 3 and supports a wall 5 made of bricks.
  • the wall 5 is arranged at such a distance from the uppermost casing stone 2 that a ventilation space 6 is formed thereby, which in the exemplary embodiment shown extends as a (square) annular space in the circumferential direction and extends to the upper end of the wall 5.
  • a further thermal insulation layer 7 is arranged, which by insulation boards, e.g. made of mineral wool, and is tight against the outside of the uppermost casing stone 2.
  • the insulation panels forming the thermal insulation layer 7 can be formed by means not shown, e.g. by means of wire wrapping.
  • the ventilation space remaining between the thermal insulation layer 7 and the inside of the wall 5 has a width of at least 3 cm.
  • cover plate 10 On the uppermost brick layer of the wall 5 there is a cover plate 10, which basically corresponds in its shape (square) to the shape of the wall 5, but overhangs on all sides over the outside thereof and has an edge 11 with an angled downward section with a water nose 12.
  • the cover plate 10 has a central opening 13 which serves for the passage of the flue gases from the flue pipe 1 and for receiving a pipe socket 14 which is attached in a manner known per se.
  • the cover plate 7 has a largely flat lower surface within the edge 11, from which, however, the base 15 integrally attached in the corners protrude downward, via which the cover plate 7 is supported on the wall 5.
  • the cover plate 10 can be made of concrete, polymer concrete, fiber concrete or the like. be made. In addition, it can have eyelets or sleeves, not shown, cast directly on its top as a moving aid.
  • the edge 11 of the cover plate 10 drawn downward forms a strong stiffening at the edge, which makes it possible to keep the cover plate relatively thin. As is apparent from Fig. 1, the top of the cover plate 10 is inclined towards the edge 11 downward, so that the drainage of rainwater is promoted.
  • the mode of operation of the chimney head structure described is as follows: since the cantilever plate 4 is located in the area of a (not shown) roof or storage space of a building, the air inlet openings of the wall 5 formed by the butt joints 8 also lie in this area.
  • the upper end of the chimney head structure shown in FIG. 1 extends beyond the roof (not shown) of the building, so that at least the air outlet openings 16 are located outdoors. This results in an air flow indicated by arrows in FIG. 1 through the ventilation space 6, which enters through the butt joints 8, runs along the thermal insulation layer 7 arranged in the ventilation space 6 and along the inner wall of the wall 5 and through the air outlet openings 16 between the bases 15 emerges again.
  • This air stream dries moisture and conveys it to the outside, which may have penetrated through the wall 5 to the inside thereof.
  • the cover plate 10 can be adapted to any cross-sections of the wall 5 with its design principle.
  • the formation of the upper smoke tube end shown in FIG. 1 with a cover, the smoke tube socket 14 and its sealing in the central opening 13 of the cover plate 10 is conventional and requires no further explanation at this point.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

A chimney cowl with a cantilever plate (4) which is fastened under the upper end of the smoke pipe (1) and of the casing (2) enclosing the smoke pipe (1), a wall surround (5) which is supported on the cantilever plate (4) and surrounds the casing (2), and a cover plate (10) which rests on the wall surround (5) and has an opening for passage of the smoke gases. In order to create a ventilation space (6) between the wall surround (5) and the casing (2) and to bring about an air flow through the ventilation space (6), the wall surround (5) surrounds the casing (2) at a distance. At the lower end of the wall surround (5), air inlet openings (8) are provided and, at the upper end of the wall surround (5), air outlet openings (16) are formed by the cover plate (10) being supported locally via plinths (15) on the wall surround (5). <IMAGE>

Description

Die Erfindung betrifft einen Kaminkopfaufbau mit einer unter dem oberen Ende des Rauchrohres und des das Rauchrohr einschließenden Mantels befestigten Kragplatte, einer auf der Kragplatte abgestützten, den Mantel umgebenden Ummauerung und einer auf der Ummauerung aufliegenden Abdeckplatte, die eine Öffnung für den Durchtritt der Rauchgase aufweist.The invention relates to a chimney head structure with a cantilever plate fastened under the upper end of the flue pipe and the casing enclosing the flue pipe, a wall surrounding the casing supported on the cantilever plate and a cover plate resting on the wall, which has an opening for the passage of the flue gases.

Die Ummauerung und die Abdeckplatte dienen dazu, Witterungseinflüsse von dem oberen Ende des Kaminmantels fernzuhalten und zu verhindern, daß die Wärmedämmeigenschaften des Mantels und der zwischen dem Mantel und dem Rauchrohr befindlichen Wärmedämmung beeinträchtigt werden. Insbesondere soll verhindert werden, daß Feuchtigkeit durch den Mantel hindurch in die Wärmedämmung eintritt und deren Fähigkeit aufhebt, eine Kondensatbildung der Rauchgase am oberen Ende des Rauchrohres nach Möglichkeit zu unterbinden. Bei den Kaminen nach dem Stand der Technik umschließt die Ummauerung, die aus Klinkern, Ziegeln mit Verputz und dgl. aufgebaut sein kann, den Mantel verhältnismässig eng und die Abdeckplatte schließt mit ihrem Rand entweder mit der Außenfläche der Ummauerung ab und ist mit dieser vermörtelt oder kraft über die Außenseite der Ummauerung hinaus und weist einen nach unten gezogenen Rand mit einer Tropf- oder Wassernase auf.The wall and the cover plate serve to keep weather influences away from the upper end of the chimney jacket and to prevent the thermal insulation properties of the jacket and the thermal insulation located between the jacket and the flue pipe from being impaired. In particular, it should be prevented that moisture enters the thermal insulation through the jacket and eliminates its ability to prevent condensation of the flue gases at the upper end of the flue pipe if possible. In the fireplaces according to the prior art, the wall, which can be constructed from clinker bricks, bricks with plaster and the like, encloses the jacket relatively closely and the cover plate either closes with its edge with the outer surface of the wall and is mortared with it or force beyond the outside of the wall and has a pulled-down edge with a drip or water nose.

Es hat sich gezeigt, daß Kondensatbildung der Rauchgase im Bereich des Kaminkopfes bisher nicht mit Sicherheit zu vermeiden ist. Es wurden deshalb vielfache Anstrengungen unternommen, die Wärmeisolierung des Rauchrohres zwischen Mantel und Rauchrohr zu verbessern, da an dieser Stelle aufgrund der verhältnismässig hohen Temperatur des Rauchrohres gegenüber der Umgebung die stärksten Wärmeverluste zu erwarten sind. Zu Verbesserungen dieser Art gehören Maßnahmen, die zwischen Mantel und Rauchrohr angeordnete Wärmedämmschicht durch von unten nach oben verlaufende Belüftungskanäle ständig trocken zu halten, um deren Wärmedämmeigenschaft möglichst umgeschmälert zu erhalten (siehe z.B. DE-A 3608155).It has been shown that the formation of condensate in the flue gases in the region of the chimney head has so far not been reliably avoided. Efforts have therefore been made to improve the heat insulation of the smoke pipe between the jacket and the smoke pipe, since the greatest heat losses from the environment can be expected here due to the relatively high temperature of the smoke pipe. Improvements of this type include measures to keep the thermal insulation layer arranged between the jacket and the flue pipe constantly dry by means of ventilation channels running from the bottom upwards in order to preserve their thermal insulation properties as narrowly as possible (see e.g. DE-A 3608155).

Der Erfindung liegt die Aufgabe zugrunde, die Wärmedämmung am oberen Kaminende weiter zu verbessern.The invention has for its object to further improve the thermal insulation at the top of the chimney.

Erfindungsgemäß wird dies dadurch erreicht, daß die Ummauerung den Kaminmantel in einem Abstand umgibt und mit diesem einen Belüftungsraum bildet, daß am unteren Ende der Ummauerung und/oder in der Kragplatte Lufteintrittsöffnungen und am oberen Ende der Ummauerung und/oder in der Abdeckplatte Luftaustrittsöffnungen vorgesehen sind, die jeweils mit dem Belüftungsraum in Verbindung stehen.According to the invention, this is achieved in that the wall surrounds the chimney jacket at a distance and forms a ventilation space with it that air inlet openings are provided at the lower end of the wall and / or in the cantilever plate and air outlet openings are provided at the upper end of the wall and / or in the cover plate , each of which is connected to the ventilation space.

Die Erfindung geht dabei von der Überlegung aus, daß zur sicheren Vermeidung der Kondensatbildung im Bereich des oberen Kaminendes nicht nur Maßnahmen erforderlich sind, die eine Wärmedämmung im Bereich des stärksten Temperaturgefälles zwischen Rauchrohr und Umgebung bewirken, sondern auch dafür gesorgt werden muß, daß der Kaminmantel selbst, d.h. außerhalb der zwischen Kaminmantel und Rauchrohr angeordneten Wärmedämmschicht, möglichst wärmedämmend gehalten wird. Hierzu schlägt die Erfindung vor, die ohnehin vorhandene Ummauerung des Kaminmantels von dem Mantel soweit wegzurücken, daß ein Belüftungsraum zwischen Ummauerung und Mantel entsteht, der normalerweise ein in Umfangrichtung durchgehender Ringraum sein wird, und am unteren Ende der Ummauerung und/oder in der Kragplatte Lufteintrittsöffnungen anzuordnen, denen am oberen Ende der Ummauerung und/oder in der Abdeckplatte Luftaustrittsöffnungen entsprechen. Dabei wird der Umstand ausgenützt, daß sich die Kragplatte, auf der sich die Ummauerung üblicherweise abstützt, stets unter dem Dach im Speicherraum oder Dachboden des Gebäudes befindet, wodurch zwischen den Lufteintrittsöffnungen an dieser Stelle und den am oberen Ende vorgesehenen Luftaustrittsöffnungen des Belüftungsraumes eine - wenn auch häufig nur geringe - Temperaturdifferenz besteht, die einen nach oben gerichteten Luftstrom durch den Belüftungsraum bewirkt. Durch diese Maßnahme kann die Ummauerung des Kaminkopfes hinterlüftet werden, so daß von der Außenseite der Ummauerung her eingedrungene Feuchtigkeit beseitigt wird, bevor sie den Mantel durchnässen und diesen dadurch auf eine noch tiefere Temperatur abkühlen kann als sie dieser ohnehin hat. Diese Hinterlüftung bedarf keiner zusätzlichen kostenmässig ins Gewicht fallenden Maßnahmen, da Kragplatte, Ummauerung und Abdeckplatte des Kaminkopfaufbaues ohnehin vorgesehen sein müssen. Die Ummauerung des erfindungsgemässen Kaminkopfaufbaues schützt darüber hinaus den Kaminmantel nicht nur vor Feuchtigkeit, sondern auch vor einer Abkühlung, die allein durch Wärmeübergang, insbesondere bei Wind, zwischen Ummauerung und Mantel entstehen könnte. Ggf. kann im Rahmen der Erfindung zusätzlich in dem Belüftungsraum eine an der Außenseite des Mantels anliegende Wärmedämmschicht vorgesehen sein.The invention is based on the consideration that to reliably avoid the formation of condensate in the area of the upper end of the chimney not only measures are required which bring about thermal insulation in the area of the greatest temperature gradient between the flue pipe and the environment, but also that the chimney jacket must be ensured itself, ie outside the thermal insulation layer arranged between the chimney jacket and the flue pipe, is kept as insulating as possible. For this purpose, the invention proposes to move the already existing wall of the chimney jacket away from the jacket to such an extent that a ventilation space is created between the wall and the jacket, which will normally be a continuous annular space in the circumferential direction, and air inlet openings at the lower end of the wall and / or in the cantilever plate to be arranged, which correspond to air outlet openings at the upper end of the wall and / or in the cover plate. This takes advantage of the fact that the cantilever plate, on which the walling is usually supported, is always under the roof in the storage room or attic of the building, so that - if between the air inlet openings at this point and the air outlet openings provided at the upper end of the ventilation space there is often only a slight temperature difference, which causes an upward air flow through the ventilation space. This measure allows the wall of the chimney head to be back-ventilated, so that moisture which has penetrated from the outside of the wall is removed before it can wet the jacket and thereby cool it to an even lower temperature than it already has. This rear ventilation does not require any additional measures which are significant in terms of cost, since the cantilever plate, walling and cover plate of the chimney head structure must be provided in any case. The walling of the chimney head structure according to the invention also protects the chimney jacket not only from moisture, but also from cooling, which could arise between the wall and the jacket solely by heat transfer, especially in wind. Possibly. can be provided in the context of the invention in the ventilation space on the outside of the jacket insulation layer.

Nach einer vorteilhaften und einfachen Ausführungsform ist vorgesehen, daß die Lufteintrittsöffnungen am unteren Ende der Ummauerung durch vertikale Stoßfugen zwischen den Mauersteinen der untersten Mauersteinschicht gebildet sind, die bewusst von einer Vermörtelung freigehalten sind. Die Tragfähigkeit der Ummauerung wird dadurch nicht beeinträchtigt. Die Lufteintrittsöffnungen können jedoch auch durchgehende Löcher in der Kragplatte in dem Bereich sein, der eine Verbindung mit dem Belüftungsraum ermöglicht.According to an advantageous and simple embodiment, it is provided that the air inlet openings at the lower end of the wall are formed by vertical butt joints between the bricks of the lowest brick layer, which are deliberately kept free of mortar. This does not affect the load-bearing capacity of the wall. However, the air inlet openings can also be through holes in the cantilever plate in the area that enables a connection to the ventilation space.

Am oberen Ende lassen sich die Luftaustrittsöffnungen nach einer zweckmässigen und ebenfalls einfach durchzuführenden Weiterbildung durch horizontale Schlitze zwischen der Abdeckplatte und der Ummauerung bilden, wobei bevorzugt die Abdeckplatte in an sich bekanner Weise allseitig über das obere Ende der Ummauerung überkragt, sich jedoch erfindungsgemäß mittels nach unten vorspringenden Sockeln oder Füssen auf der Ummauerung abstützt. Die Schlitze werden somit zwischen diesen Sockeln oder Füssen selbsttätig nach dem Aufsetzen der Abdeckplatte gebildet.At an upper end, the air outlet openings can be formed by horizontal slots between the cover plate and the wall, according to an expedient and also easy to carry out further development, the cover plate preferably projecting on all sides over the upper end of the wall in a manner known per se, but according to the invention by means of downwards protruding bases or feet supported on the wall. The slots are thus automatically formed between these bases or feet after the cover plate has been put on.

Ein Ausführungsbeispiel der Erfindung ist nachfolgend anhand der beiliegenden Zeichnungen näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 einen Vertikalschnitt durch einen Kaminkopf nach der Erfindung;
  • Fig. 2 eine Untenansicht der Abdeckplatte des Kaminkopfes gemäß Fig. 1, und
  • Fig. 3 einen Schnitt längs der Linie 111-111 in Fig. 2.
An embodiment of the invention is explained below with reference to the accompanying drawings. The drawings show:
  • 1 shows a vertical section through a chimney head according to the invention.
  • Fig. 2 is a bottom view of the cover plate of the chimney head of FIG. 1, and
  • 3 shows a section along the line 111-111 in FIG. 2nd

Der in Fig. 1 dargestellte Kamin ist als Fertigkamin aus einzelnen Rauchrohrabschnitten 1, Mantelsteinen 2 und einer zwischen den Rauchrohrabschnitten 1 und den Mantelsteinen 2 jeweils eingesetzten Wärmedämmschicht in Form von Dämmschichtschalen 3 aufgebaut. Zwischen den vorletzten und den letzten Mantelstein 2 ist eine Kragplatte 4, z.B. aus Beton, eingesetzt und mit diesen Mantelsteinen vermörtelt. Die Kragplatte 4 weist eine zentrale Öffnung auf, die die Wärmedämmschicht 3 eng umschließt, und stützt eine aus Ziegeln aufgebaute Ummauerung 5 ab. Die Ummauerung 5 ist in einem solchen Abstand von dem obersten Mantelstein 2 angeordnet, daß hierdurch ein Belüftungsraum 6 gebildet ist, der in dem gezeigten Ausführungsbeispiel sich als (viereckiger) Ringraum in Umfangsrichtung erstreckt und bis zum oberen Ende der Ummauerung 5 reicht. In dem Belüftungsraum 6 ist eine weitere Wärmedämmschicht 7 angeordnet, die durch Dämmplatten, z.B. aus Mineralwolle, besteht und eng an der Außenseite des obersten Mantelsteines 2 anliegt. Die die Wärmedämmschicht 7 bildenden Dämmplatten können durch nicht gezeigte Mittel, z.B. durch eine Umwickelung mittels Draht, gehalten sein. Der zwischen der Wärmedämmschicht 7 und der Innenseite der Ummauerung 5 verbleibende Belüftungsraum weist eine Breitevon mindestens 3 cm auf.The chimney shown in FIG. 1 is constructed as a finished chimney from individual smoke pipe sections 1, casing stones 2 and a heat insulation layer in the form of insulation layer shells 3, which is used between the smoke pipe sections 1 and the casing stones 2. Between the penultimate and the last casing stone 2 is a cantilever plate 4, e.g. made of concrete, used and mortared with these coat stones. The cantilever plate 4 has a central opening which tightly surrounds the thermal insulation layer 3 and supports a wall 5 made of bricks. The wall 5 is arranged at such a distance from the uppermost casing stone 2 that a ventilation space 6 is formed thereby, which in the exemplary embodiment shown extends as a (square) annular space in the circumferential direction and extends to the upper end of the wall 5. In the ventilation space 6, a further thermal insulation layer 7 is arranged, which by insulation boards, e.g. made of mineral wool, and is tight against the outside of the uppermost casing stone 2. The insulation panels forming the thermal insulation layer 7 can be formed by means not shown, e.g. by means of wire wrapping. The ventilation space remaining between the thermal insulation layer 7 and the inside of the wall 5 has a width of at least 3 cm.

Mit dem Belüftungsraum 6 stehen Lufteintrittsöffnungen am unteren Ende der Ummauerung 5 in Verbindung, die dadurch gebildet sind, daß Stoßfugen 8 zwischen den Mauersteinen der untersten Mauersteinschicht von Mörtel freigehalten sind. Dies ist in Fig. 1 dadurch angedeutet, daß die Stirnseiten der die Stoßfugen 8 bildenden Mauersteine blank gezeichnet sind, während zwischen' den Stirnseiten der weiteren Mauersteinschichten die Vermörtelung durch eine Punktierung angedeutet ist.With the ventilation space 6 are air inlet openings at the lower end of the wall 5 in connection, which are formed in that butt joints 8 between the bricks of the lowest brick layer are kept free of mortar. This is indicated in Fig. 1 by the fact that the end faces of the bricks forming the butt joints 8 are drawn blank, while between ' the end faces of the other brick layers, the mortar is indicated by a puncturing.

Auf der obersten Mauersteinschicht der Ummauerung 5 liegt eine Abdeckplatte 10 auf, die in ihrer Form (quadratisch) grundsätzlich der Form der Ummauerung 5 entspricht, jedoch allseitig über deren Außenseite überkragt und einen nach unten abgewinkelten Rand 11 mit einer Wassernase 12 besitzt. Außerdem weist die Abdeckplatte 10 eine zentrale Öffnung 13 auf, die für den Durchtritt der Rauchgase aus dem Rauchrohr 1 und zur Aufnahme eines in an sich bekannter Weise angebrachten Rohrstutzens 14 dient. Weiterhin hat die Abdeckplatte 7 eine weitgehend ebene Unterfläche innerhalb des Randes 11, von der jedoch in den Ecken einstückig angebrachte Sockel 15 nach unten vorspringen, über die sich die Abdeckplatte 7 auf der Ummauerung 5 abstützt. Aufgrund der Abstützung mittels der Sockel 15 entstehen zwischen diesen Sockeln, der Unterfläche der Abdeckplatte 10 und der Oberseite der Ummauerung 5 Luftaustrittsschlitze 16, die durch den nach unten gezogenen Rand 11 gegen ein Eindringen von Regen und Wind weitgehend geschützt sind. Die Abdeckplatte 10 kann aus Beton, Polymerbeton, Faserbeton od.dgl. hergestellt sein. Außerdem kann sie an ihrer Oberseite direkt eingegossene, nicht gezeigte Ösen oder Hülsen als Versetzhilfe aufweisen. Der nach unter gezogene Rand 11 der Abdeckplatte 10 bildet eine randseitige kräftige Versteifung, die es erlaubt, die Abdeckplatte verhältnismässig dünn zu halten. Wie aus Fig. 1 hervorgeht, verläuft die Oberseite der Abdeckplatte 10 zum Rand 11 hin nach unten geneigt, so daß das Ablaufen von Regenwasser begünstigt wird.On the uppermost brick layer of the wall 5 there is a cover plate 10, which basically corresponds in its shape (square) to the shape of the wall 5, but overhangs on all sides over the outside thereof and has an edge 11 with an angled downward section with a water nose 12. In addition, the cover plate 10 has a central opening 13 which serves for the passage of the flue gases from the flue pipe 1 and for receiving a pipe socket 14 which is attached in a manner known per se. Furthermore, the cover plate 7 has a largely flat lower surface within the edge 11, from which, however, the base 15 integrally attached in the corners protrude downward, via which the cover plate 7 is supported on the wall 5. Because of the support by means of the base 15, 5 air outlet slots 16 are formed between these bases, the lower surface of the cover plate 10 and the top of the wall, which are largely protected against the ingress of rain and wind by the downwardly drawn edge 11. The cover plate 10 can be made of concrete, polymer concrete, fiber concrete or the like. be made. In addition, it can have eyelets or sleeves, not shown, cast directly on its top as a moving aid. The edge 11 of the cover plate 10 drawn downward forms a strong stiffening at the edge, which makes it possible to keep the cover plate relatively thin. As is apparent from Fig. 1, the top of the cover plate 10 is inclined towards the edge 11 downward, so that the drainage of rainwater is promoted.

Die Wirkungsweise des geschilderten Kaminkopfaufbaues ist folgende: Da sich die Kragplatte 4 im Bereich eines (nicht gezeichneten) Dach- oder Speicherraumes eines Gebäudes befindet, liegen auch die durch die Stoßfugen 8 gebildeten Lufteintrittsöffnungen der Ummauerung 5 in diesem Bereich. Das obere Ende des in Fig. 1 gezeigten Kaminkopfaufbaues erstreckt sich über das (nicht gezeichnete) Dach des Gebäudes hinaus, so daß zumindest die Luftaustrittsöffnungen 16 sich im Freien befinden. Dadurch stellt sich ein in Fig. 1 mit Pfeilen angedeuteter Luftstrom durch den Belüftungsraum 6 ein, der durch die Stoßfugen 8 eintritt, längs der im Belüftungsraum 6 angeordneten Wärmedämmschicht 7 sowie längs der Innenwand der Ummauerung 5 verläuft und durch die Luftaustrittsöffnungen 16 zwischen den Sockeln 15 wieder austritt. Dieser Luftstrom trocknet Feuchtigkeit und fördert sie nach außen, die ggf. durch die Ummauerung 5 bis zu deren Innenseite durchgedrungen ist.The mode of operation of the chimney head structure described is as follows: since the cantilever plate 4 is located in the area of a (not shown) roof or storage space of a building, the air inlet openings of the wall 5 formed by the butt joints 8 also lie in this area. The upper end of the chimney head structure shown in FIG. 1 extends beyond the roof (not shown) of the building, so that at least the air outlet openings 16 are located outdoors. This results in an air flow indicated by arrows in FIG. 1 through the ventilation space 6, which enters through the butt joints 8, runs along the thermal insulation layer 7 arranged in the ventilation space 6 and along the inner wall of the wall 5 and through the air outlet openings 16 between the bases 15 emerges again. This air stream dries moisture and conveys it to the outside, which may have penetrated through the wall 5 to the inside thereof.

Die Abdeckplatte 10 lässt sich, wie ohne weiteres einleuchtet, mit ihrem Gestaltungsprinzip an beliebige Querschnitte der Ummauerung 5 anpassen. Die aus Fig. 1 ersichtliche Ausbildung des oberen Rauchrohrendes mit einer Abdeckung, dem Rauchrohrstutzen 14 und dessen Abdichtung in der zentralen Öffnung 13 der Abdeckplatte 10 ist herkömmlicher Art und bedarf an dieser Stelle keiner näheren Erläuterung.As is readily apparent, the cover plate 10 can be adapted to any cross-sections of the wall 5 with its design principle. The formation of the upper smoke tube end shown in FIG. 1 with a cover, the smoke tube socket 14 and its sealing in the central opening 13 of the cover plate 10 is conventional and requires no further explanation at this point.

Claims (6)

1. A chimney cowl structure comprising a support plate which is fixed under the upper end of the flue and of the casing enclosing the flue, a wall structure which is supported on the support plate and which surrounds the casing, and a cover plate which is disposed on the wall structure and which has an opening for the flue gases to pass therethrough, characterised in that the enclosing wall structure (5) is disposed around the casing (2) at a spacing and forms therewith a ventilation space (6) and that provided at the lower end of the wall structure (5) and/or in the support plate (4) are air inlet openings (8) and provided at the upper end of the wall structure (5) and/or in the cover plate (10) are air outlet openings (16), which openings respectively communicate with the ventilation space (6).
2. A chimney cowl structure according to claim 1 characterised in that the air inlet openings at the lower end of the wall structure (5) are formed by vertical joints (8) which are kept free of mortar between the bricks of the lowermost course of bricks.
3. A chimney cowl structure according to claim 1 or claim 2 characterised in that the air outlet open- . ings (16) at the upper end of the wall structure (5) are formed by horizontal slots between the cover plate (10) and the wall structure (5).
4. A chimney cowl structure according to claim 3 wherein the cover plate projects on all sides beyond the upper end of the wall structure and the edge of the cover plate is extended downwardly to form a water drip portion characterised in that the cover plate (10) is supported with projections (15) at its underside on the wall structure (5).
5. A chimney cowl structure according to claim 4 characterised in that the projections (15) are arranged in the corners of the cover plate (10).
6. A chimney cowl structure according to one of claims 1 to 5 characterised in that a heat insulating layer (7) is arranged in the ventilation space (6), lying against the outside of the casing (2).
EP88113850A 1987-08-28 1988-08-25 Chimney cowl Expired - Lifetime EP0304909B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113850T ATE58587T1 (en) 1987-08-28 1988-08-25 FIREPLACE CONSTRUCTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3728734 1987-08-28
DE19873728734 DE3728734A1 (en) 1987-08-28 1987-08-28 FIREPLACE STRUCTURE

Publications (3)

Publication Number Publication Date
EP0304909A2 EP0304909A2 (en) 1989-03-01
EP0304909A3 EP0304909A3 (en) 1989-04-05
EP0304909B1 true EP0304909B1 (en) 1990-11-22

Family

ID=6334685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113850A Expired - Lifetime EP0304909B1 (en) 1987-08-28 1988-08-25 Chimney cowl

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EP (1) EP0304909B1 (en)
AT (1) ATE58587T1 (en)
DE (1) DE3728734A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123614A1 (en) * 1991-07-17 1993-01-28 Heribert Von Goewels CHIMNEY HEAD
DE9207111U1 (en) * 1992-05-26 1992-07-23 Betonwerke Heinrich Heß KG Zweigniederlassung Nürnberg, 8500 Nürnberg Multi-layer chimney
DE4316385A1 (en) * 1992-05-15 1993-11-18 Betonwerke Heinrich Hes Kg Zwe Chimney stack cover plate with smoke passage - contains heat insulating layer, surrounded on all sides by wall material
DE29504737U1 (en) * 1995-03-20 1995-06-29 Interactive Holding B.V., Didam Chimney cover
EP3767150A1 (en) * 2019-07-18 2021-01-20 ROCKWOOL International A/S A system comprising a pipe and an insulating and protecting element and insulating and protecting element

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2514487A1 (en) * 1975-04-03 1976-10-14 Jansen Keramik & Bau Kg L Rain-proof cladding for chimney stack - is slightly conical sheathing tube with ventilation gap
AT398106B (en) * 1981-03-30 1994-09-26 Schiedel Gmbh & Co MULTI-SHELLED CHIMNEY
CH664618A5 (en) * 1984-09-07 1988-03-15 Zuercher Ziegeleien MULTI-SHELLED CHIMNEY.
DE3608155A1 (en) * 1985-05-11 1986-11-13 Schornsteinwerk Karl-Heinz Schreyer, 2148 Zeven Cladding with ventilation for chimney heads, smoke outlets or vents

Also Published As

Publication number Publication date
EP0304909A2 (en) 1989-03-01
EP0304909A3 (en) 1989-04-05
DE3728734A1 (en) 1989-03-09
ATE58587T1 (en) 1990-12-15

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