EP0296125B1 - Covering element for chimney, and associated cowl - Google Patents

Covering element for chimney, and associated cowl Download PDF

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Publication number
EP0296125B1
EP0296125B1 EP88810419A EP88810419A EP0296125B1 EP 0296125 B1 EP0296125 B1 EP 0296125B1 EP 88810419 A EP88810419 A EP 88810419A EP 88810419 A EP88810419 A EP 88810419A EP 0296125 B1 EP0296125 B1 EP 0296125B1
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EP
European Patent Office
Prior art keywords
chimney
cover element
heat
casing
element according
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EP88810419A
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German (de)
French (fr)
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EP0296125A2 (en
EP0296125A3 (en
Inventor
Gert Basten
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Basten Maria Sibylle
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Basten Maria Sibylle
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Priority to AT88810419T priority Critical patent/ATE63629T1/en
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Publication of EP0296125A3 publication Critical patent/EP0296125A3/en
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    • 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 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/50—Top cover

Definitions

  • the invention relates to a chimney covering element which covers the upper end face of a chimney head of a brick chimney or a chimney made of chimney elements, but leaves the flue gas passage opening free.
  • the object of the present invention is to create a chimney cover element which replaces these conventional cover plates and which does not have the aforementioned disadvantages.
  • a chimney cover element of the type mentioned at the outset by means of a heat-insulating part which consists of heat-insulating material and is surrounded on its top and, seen in the horizontal direction, its inside and outside by a water-impermeable sheathing, the sheathing on the Inside is made of metal and is not thermally connected to the sheathing on the top and outside.
  • the inside for example by means of temperature and exhaust-resistant silicone rubber, is not connected in a heat-conducting manner to the downward-facing side of the top of the casing, so that the inside, which is swept by the exhaust gas flowing through it, does not cool down from the remaining cold part of the casing can be.
  • the part forming the inside of the casing is formed by an expansion joint collar which extends downwards in its axial direction beyond the thermal insulation part.
  • the expansion joint collar extends upwards in its axial direction beyond the thermal insulation part, and that part of the expansion joint collar which extends upward beyond the thermal insulation part is surrounded on its outside by a thermal insulation material. It is also expedient if the underside of the heat-insulating part rests on a frame, net or perforated holding part connected to the casing, and the latter consists of poorly heat-conducting material or is connected to the upper and outer side of the casing via such.
  • the chimney element is designed in such a way that when arranged on the chimney head, at least part of the thermal insulation part is in air circulation connection with the outside atmosphere.
  • the sheathing consists of a copper alloy or chromium-nickel steel.
  • this chimney cover element is provided on its outside with a drip plate that laterally projects beyond the chimney head and extends downward.
  • the chimney cover element according to the invention is to be used for a rear-ventilated chimney, then it is expedient if it is provided with spacing means for forming at least one ventilation slot which extends radially and extends into the outside atmosphere between its underside and the upward-facing end face of the chimney head to be covered is provided (Fig. 1).
  • the chimney cover element according to the invention is to be used for a normal chimney without ventilation, then it is advantageous if its underside is designed to rest on the upward-facing end face of the chimney and protrudes radially outward from this end face, and that at least the end face of the Part of the chimney projecting laterally is air-permeable (Fig. 2).
  • the inside of the casing is not thermally conductively bonded to a temperature-resistant silicone rubber, preferably to the downward-facing surface of the top of the casing, so that the cold bridge is thereby interrupted.
  • the present invention also relates to a chimney cap with an integral part of the chimney covering element according to one of claims 1 to 11. It is advantageous if the chimney cap is connected to the chimney covering element by means of heat-insulating means that interrupt the cold bridge.
  • this chimney cap has an inner jacket arranged at least approximately in the shape of a truncated pyramid and coaxially to the expansion joint collar, which projects above the pipe socket, and an outer jacket which is arranged coaxially to the latter and projects above the inner jacket and is distanced from it to form an annular chamber.
  • an inner jacket arranged at least approximately in the shape of a truncated pyramid and coaxially to the expansion joint collar, which projects above the pipe socket, and an outer jacket which is arranged coaxially to the latter and projects above the inner jacket and is distanced from it to form an annular chamber.
  • which has at least approximately the shape of the circumferential surface of a regular prism or a truncated pyramid, is provided, and preferably at least one through-flow opening is provided in at least some of the surfaces forming the inner and / or outer shell.
  • the chimney cover element 2 provided for covering the chimney head of a brick chimney 1 ventilated via the channels 0 has the upwardly directed end face of the chimney Chimney head covering, consisting of highly thermally insulating thermal insulation material 3, which is surrounded on its top, inside and outside 4,5, 6 respectively by a water-impermeable casing 7.
  • the inside 5 of the casing 7 is formed by an exhaust gas-resistant expansion joint sleeve 10, which extends in its axial direction beyond the thermal insulation part 3 down into the chamotte tube.
  • the top and the outside 4 and 6 of the casing 7 consist of an approximately 1 mm thick copper sheet.
  • the expansion joint collar 10 is firmly connected to the downward-facing surface of the upper side 4 of the casing 7 by means of a temperature-resistant silicone rubber layer 28 in order to avoid any cold bridge, and thus cannot be cooled by the cold outside air, since it is located inside the casing in this way.
  • the underside of the thermal insulation part 3 lies on a mesh 8 connected to the casing 7, which consists of poorly heat-conducting material such as nylon.
  • the cover element 2 On its outside, the cover element 2 is provided with a drip plate 9 which laterally projects beyond the chimney head and extends downward.
  • the chimney cover element on its inside has an expansion joint sleeve 10 which is insulated from the cold bridge and which engages in a fireclay tube 11.
  • the fireclay tube 11 in turn is surrounded by a heat insulation layer 12 and this in turn is surrounded by a casing block 14 provided with ventilation channels 13. After that follows the wall 15 and the exterior plaster 16.
  • the cover element is designed to be stepped upward against the expansion joint collar 11.
  • the cover element lies on the chimney casing with the formation of ventilation channels 17 which extend in the radial direction from the inside to the outside.
  • the grating 8 can be correspondingly corrugated in this area. In this way, the air serving for rear ventilation and flowing through the vertically extending channels 0 to the outside via the horizontally extending ventilation channels 17 can escape to the outside or reach the decentralized fireplaces.
  • the expansion joint collar 10 which is made of a chromium steel alloy, is a good heat conductor and cannot be cooled by external parts of the chimney cover element via cold bridges, any undesirable ice formation on the expansion joint collar is avoided and at the same time the insulation 3 is absolutely dry and thus, thanks to the latter, even the outlet area of the chamotte tube 11 and the expansion joint collar 10 is kept at the desired temperature.
  • the chimney cover element 2 is connected to a chimney cap 18 via a heat-insulating connection (not shown) to form a single unit.
  • This chimney cap is provided with an approximately truncated pyramid-shaped inner casing 19 which is arranged coaxially to the pipe socket as an expansion joint sleeve 10 and which projects above this pipe socket 10, and with a coaxial to the latter, which projects above the inner casing 19 and forms an annular chamber 20 therefrom distanced outer jacket 21, which is also approximately truncated pyramid.
  • the cover element with its grid-shaped underside is on the upward-facing end face of a conventional one, not ventilated chimney directly on.
  • the dry insulation or rear ventilation of the thermal insulation material 3 is achieved in that the part of this thermal insulation material 3 projecting laterally beyond the front side of the chimney via the grille 8 and the annular space which is open at the bottom and is formed between the outside of the wall 15 and the inside of the drip tray 9 24 communicates with the outside atmosphere.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chimneys And Flues (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The covering element (2) for a chimney serves to cover the chimney head of chimneys which are brick-lined or made of chimney elements. In order to avoid cold bridges and the associated extremely disadvantageous condensate formation in the waste gas outlet region of the chimney, the covering element (2) has a heat-insulating part (3) consisting of heat-insulating material, which covers the upwardly directed end face of the chimney head. This heat-insulating part (3) is surrounded on its upper, inner and outer side (4, 5, 6) by a water- impervious covering (7) and extends from the outside of the expansion joint sleeve (10) as far as over the outer edge of the chimney. The expansion joint sleeve (10) is rigidly connected in a thermally insulated manner, via a practically non-heat-conducting silicone rubber layer (28), to the downwardly directed surface of the upper side (4) of the covering (7). The underside of the heat-insulating material (3) is supported by a copper net (8) or a number of copper bands and thus brushed over, over practically its entire surface, by the circulation air which flows through the rear ventilation ducts (13) and escapes into the open behind the drip sheet (9). <IMAGE>

Description

Die Erfindung betrifft ein Schornsteinabdeckelement das die obere Stirnseite eines Schornsteinkopfes eines gemauerten oder aus Schornsteinelementen erstellten Schornsteines überdeckt, jedoch die Rauchgasdurchtrittsöffnung freilässt.The invention relates to a chimney covering element which covers the upper end face of a chimney head of a brick chimney or a chimney made of chimney elements, but leaves the flue gas passage opening free.

Es ist bekannt, zur Überdeckung des Schornsteinkopfes von gemauerten Schornsteinen massive, aus Beton hergestellte Abdeckplatten zu verwenden, welche mit den daran anbetonierten und in das Schornsteininnere hineinragenden metallischen Dehnfugenmanschetten regelrechte Kältebrücken bilden und die Kondensatbildung im Innern des Schornsteinkopfes insbesondere bei den heute propagierten niedrigen Abgastemperaturen extrem fördern, was für die Lebensdauer des letzteren äusserst nachteilig ist (siehe z.B. DE-A-1759 299).It is known to use massive cover plates made of concrete to cover the chimney head of brick chimneys, which form regular cold bridges with the metallic expansion joint sleeves concreted onto them and protruding into the inside of the chimney, and the formation of condensate inside the chimney head is extremely high, especially at the low exhaust gas temperatures propagated today promote what is extremely disadvantageous for the life of the latter (see, for example, DE-A-1759 299).

Werden mit Hinterlüftung versehene, wärmeisolierte Schornsteine eingesetzt, dann ist darauf zu achten, dass jede Kondensatfeuchtigkeit von den dabei verwendeten Wärmedämmstoffen ferngehalten wird, da Luft eine etwa 25mal bessere Wärmedämmfähigkeit aufweist als Wasser. Füllen sich die Poren von Bau- und Wärmedämmstoffen mit Kondensatwasser, dann verlieren sie ihre Wärmedämmwirkung und die Kondensatbildung wird noch weiter verstärkt.If heat-insulated chimneys with ventilation are used, it must be ensured that any moisture in the condensate is kept away from the thermal insulation materials used, since air has about 25 times better thermal insulation properties than water. If the pores of building and thermal insulation materials fill with condensate water, they lose their thermal insulation effect and the formation of condensate is further increased.

Aufgabe der vorliegenden Erfindung ist die Schaffung eines diese herkömmlichen Abdeckplatten ersetzenden Schornsteinabdeckelementes, welches diese vorerwähnten Nachteile nicht aufweist.The object of the present invention is to create a chimney cover element which replaces these conventional cover plates and which does not have the aforementioned disadvantages.

Diese Aufgabe wird bei einem Schornsteinabdeckelement der eingangs genannten Art erfindungsgemäss gelöst, durch einen aus Wärmedämmstoff bestehenden Wärmedämmteil, welcher auf seiner Ober-, sowie, in horizontaler Richtung gesehen, seiner Innen- und Aussenseite von einer wasserundurchlässigen Ummantelung umgeben ist, wobei die Ummantelung auf der Innenseite aus Metall besteht und nicht wärmeleitend mit der Ummantelung auf der Ober- und Aussenseite verbunden ist.This object is achieved according to the invention in a chimney cover element of the type mentioned at the outset, by means of a heat-insulating part which consists of heat-insulating material and is surrounded on its top and, seen in the horizontal direction, its inside and outside by a water-impermeable sheathing, the sheathing on the Inside is made of metal and is not thermally connected to the sheathing on the top and outside.

Dabei ist es vorteilhaft, wenn die Innenseite, z.B. mittels temperatur- und abgasbeständigem Silikonkautschuk, nicht wärmeleitend mit der nach unten gerichteten Seite der Oberseite der Ummantelung verbunden ist, so dass die im Einsatz vom durchströmendem Abgas bestrichene Innenseite nicht vom übrigen kalten Teil der Ummantelung abgekühlt werden kann.It is advantageous if the inside, for example by means of temperature and exhaust-resistant silicone rubber, is not connected in a heat-conducting manner to the downward-facing side of the top of the casing, so that the inside, which is swept by the exhaust gas flowing through it, does not cool down from the remaining cold part of the casing can be.

Zur einfachen Herstellung ist es zweckmässig, wenn der die Innenseite der Ummantelung bildende Teil durch eine Dehnfugenmanschette gebildet wird, welche sich in ihrer Achsialrichtung über den Wärmedämmteil hinaus nach unten erstreckt.For simple manufacture, it is expedient if the part forming the inside of the casing is formed by an expansion joint collar which extends downwards in its axial direction beyond the thermal insulation part.

Dabei ist es insbesondere bei Verwendung eines Schornsteinaufsatzes zweckmässig, wenn die Dehnfugenmanschette sich in ihrer Axialrichtung über den Wärmedämmteil hinaus nach oben erstreckt, und dieser nach oben über den Wärmedämmteil hinaus sich erstreckende Teil der Dehnfugenmanschette auf seiner Aussenseite von einem Wärmedämmstoff umgeben ist. Dabei ist es ebenfalls zweckmässig, wenn die Unterseite des Wärmedämmteiles auf einem mit der Ummantelung verbundenen Rahmen, Netz oder gelochten Halterungsteil aufliegt, und der letztere aus schlecht wärmeleitendem Material besteht oder über solches mit der Ober- und Aussenseite der Ummantelung verbunden ist.It is particularly expedient when using a chimney cap if the expansion joint collar extends upwards in its axial direction beyond the thermal insulation part, and that part of the expansion joint collar which extends upward beyond the thermal insulation part is surrounded on its outside by a thermal insulation material. It is also expedient if the underside of the heat-insulating part rests on a frame, net or perforated holding part connected to the casing, and the latter consists of poorly heat-conducting material or is connected to the upper and outer side of the casing via such.

Zur sicheren Trockenhaltung des zum Beispiel aus Mineralfasern bestehenden Wärmedämmmaterials ist es vorteilhaft, wenn das Schornsteinelement derart ausgebildet ist, dass bei Anordnung auf dem Schornsteinkopf mindestens ein Teil des Wärmedämmteiles mit der Aussenatmosphäre in Luftzirkulationsverbindung steht.To keep the thermal insulation material, which consists of mineral fibers, for example, dry, it is advantageous if the chimney element is designed in such a way that when arranged on the chimney head, at least part of the thermal insulation part is in air circulation connection with the outside atmosphere.

Es hat sich als vorteilhaft erwiesen, wenn die Ummantelung aus einer Kupferlegierung oder aus Chromnickelstahl besteht.It has proven to be advantageous if the sheathing consists of a copper alloy or chromium-nickel steel.

Es ist ferner zweckmässig, wenn diese Schornsteinabdeckelement auf seiner Aussenseite mit einem den Schornsteinkopf seitlich überragenden und nach unten sich erstreckenden Abtropfblech versehen ist.It is also expedient if this chimney cover element is provided on its outside with a drip plate that laterally projects beyond the chimney head and extends downward.

Wenn das erfindungsgemässe Schornsteinabdeckelement für einen mit Hinterlüftung versehenen Schornstein verwendet werden soll, dann ist es zweckmässig, wenn es mit Distanziermitteln zur Bildung mindestens eines zwischen seiner Unterseite und der nach oben gerichteten Stirnseite des zu überdeckenden Schornsteinkopfes radial verlaufenden, bis in die Aussenatmosphäre sich erstreckenden Lüftungsschlitzes versehen ist (Fig. 1).If the chimney cover element according to the invention is to be used for a rear-ventilated chimney, then it is expedient if it is provided with spacing means for forming at least one ventilation slot which extends radially and extends into the outside atmosphere between its underside and the upward-facing end face of the chimney head to be covered is provided (Fig. 1).

Wenn das erfindungsgemässe Schornsteinabdeckelement für einen ganz normalen Schornstein ohne Hinterlüftung verwendet werden soll, dann ist es vorteilhaft, wenn seine Unterseite zur Auflage auf der nach oben gerichteten Stirnseite des Schornsteines ausgebildet ist und diese Stirnseite radial nach aussen überragt, und dass mindestens der die Stirnseite des Schornsteines seitlich überragen de Teil luftdurchlässig ausgebildet ist (Fig.2).If the chimney cover element according to the invention is to be used for a normal chimney without ventilation, then it is advantageous if its underside is designed to rest on the upward-facing end face of the chimney and protrudes radially outward from this end face, and that at least the end face of the Part of the chimney projecting laterally is air-permeable (Fig. 2).

Es ist ausserdem zweckmässig, wenn die Innenseite der Ummantelung über einen temperaturbeständigen Silikonkautschuk, vorzugsweise mit der nach unten gerichteten Oberfläche der Oberseite der Ummantelung nicht wärmeleitend verbunden ist, so dass dadurch die Kältebrücke unterbrochen wird.It is also expedient if the inside of the casing is not thermally conductively bonded to a temperature-resistant silicone rubber, preferably to the downward-facing surface of the top of the casing, so that the cold bridge is thereby interrupted.

Gegenstand der vorliegenden Erfindung ist ferner ein Schornsteinaufsatz mit einem einen integrierenden Bestandteil desselben bildenden Schornsteinabdeckelement nach einem der Ansprüche 1 bis 11. Dabei ist es vorteilhaft, wenn der Schornsteinaufsatz über wärmedämmende, die Kältebrücke unterbrechende Mittel mit dem Schornsteinabdeckelement verbunden ist.The present invention also relates to a chimney cap with an integral part of the chimney covering element according to one of claims 1 to 11. It is advantageous if the chimney cap is connected to the chimney covering element by means of heat-insulating means that interrupt the cold bridge.

Dabei ist es vorteilhaft, wenn dieser Schornsteinaufsatz mit einem koaxial zu der Dehnfugenmanschette angeordneten, mindestens annähernd pyramidenstumpfförmigen Innenmantel, der den Rohrstutzen nach oben überragt, sowie einem koaxial zu letzterem angeordneten, den Innenmantel nach oben überragenden und von diesem unter Bildung einer Ringkammer distanzierten Aussenmantel, der mindestens annähernd die Form der Mantelfläche eines regulären Prismas oder eines Pyramidenstumpfes aufweist, versehen ist, und vorzugsweise in mindestens einigen der den Innen- und/oder Aussenmantel bildenden Flächen mindestens je eine Durchströmöffnung vorgesehen ist.It is advantageous if this chimney cap has an inner jacket arranged at least approximately in the shape of a truncated pyramid and coaxially to the expansion joint collar, which projects above the pipe socket, and an outer jacket which is arranged coaxially to the latter and projects above the inner jacket and is distanced from it to form an annular chamber. which has at least approximately the shape of the circumferential surface of a regular prism or a truncated pyramid, is provided, and preferably at least one through-flow opening is provided in at least some of the surfaces forming the inner and / or outer shell.

Zweckmässige Weiterausgestaltungen des erfindungsgemässen Schornsteinaufsatzes sind Gegenstand des Anspruchs 15.Appropriate further developments of the chimney cap according to the invention are the subject of claim 15.

Nachstehend wird die Erfindung anhand der Zeichnung bei spielsweise näher erläutert. Es zeigt:

  • Fig.1 eine teilweise im Schnitt dargestellte erste beispielsweise Ausführungsform eines mit einem erfindungsgemässen Schornsteinabdeckelement versehenen Schornsteinaufsatzes; und
  • Fig.2 eine teilweise im Schnitt dargestellte zweite beispielsweise Ausführungsform eines mit einem erfindungsgemässen Schornsteinabdeckelement versehenen Schornsteinaufsatzes.
The invention is explained in more detail below with reference to the drawing, for example. It shows:
  • 1 shows a first exemplary embodiment, shown partly in section, of a chimney cap provided with a chimney cover element according to the invention; and
  • 2 shows a second exemplary embodiment, partially shown in section, of a chimney cap provided with a chimney cover element according to the invention.

Wie aus Figur 1 ersichtlich, weist das zur Überdeckung des Schornsteinkopfes eines gemauerten und über die Kanäle 0 hinterlüfteten Schornsteines 1 vorgesehene Schornsteinabdeckelement 2 einen die nach oben gerichtete Stirnseite des Schornsteinkopfes überdeckenden, aus stark wärmedämmenden Wärmedämmstof bestehenden Wärmedämmteil 3 auf, welcher auf seiner Ober-, Innen- und Aussenseite 4,5 respektive 6 von einer wasserundurchlässigen Ummantelung 7 umgeben ist. Dabei wird die Innenseite 5 der Ummantelung 7 durch eine abgasfeste Dehnfugenmanschette 10 gebildet, welche sich in ihrer Achsialrichtung über den Wärmedämmteil 3 hinaus nach unten in das Schamottenrohr hinein erstreckt. Die Ober- und die Aussenseite 4 und 6 der Ummantelung 7 bestehen aus einem etwa 1 mm starkem Kupferblech. Die Dehnfugenmanschette 10 ist zur Vermeidung jeglicher Kältebrücke über eine temperaturbeständige Silikonkautschukschicht 28 mit der nach unten gerichteten Oberfläche der Oberseite 4 der Ummantelung 7 fest verbunden, und kann somit von der kalten Aussenluft nicht abgekühlt werden, da sie sich derart im Innern der Ummantelung befindet.As can be seen from FIG. 1, the chimney cover element 2 provided for covering the chimney head of a brick chimney 1 ventilated via the channels 0 has the upwardly directed end face of the chimney Chimney head covering, consisting of highly thermally insulating thermal insulation material 3, which is surrounded on its top, inside and outside 4,5, 6 respectively by a water-impermeable casing 7. The inside 5 of the casing 7 is formed by an exhaust gas-resistant expansion joint sleeve 10, which extends in its axial direction beyond the thermal insulation part 3 down into the chamotte tube. The top and the outside 4 and 6 of the casing 7 consist of an approximately 1 mm thick copper sheet. The expansion joint collar 10 is firmly connected to the downward-facing surface of the upper side 4 of the casing 7 by means of a temperature-resistant silicone rubber layer 28 in order to avoid any cold bridge, and thus cannot be cooled by the cold outside air, since it is located inside the casing in this way.

Um zu vermeiden, dass der Wärmedämmstoff mit der Zeit feucht wird und dadurch seine wärmedämmenden Eigenschaften weitgehend verliert, liegt die Unterseite des Wärmedämmteiles 3 auf einem mit der Ummantelung 7 verbundenen Netz 8 auf, welches aus schlecht wärmeleitendem Material wie zum Beispiel Nylon besteht.In order to avoid that the thermal insulation material becomes damp over time and thereby largely loses its thermal insulation properties, the underside of the thermal insulation part 3 lies on a mesh 8 connected to the casing 7, which consists of poorly heat-conducting material such as nylon.

Auf seiner Aussenseite ist das Abdeckelement 2 mit einem den Schornsteinkopf seitlich überragenden und nach unten sich erstreckenden Abtropfblech 9 versehen.On its outside, the cover element 2 is provided with a drip plate 9 which laterally projects beyond the chimney head and extends downward.

Auf seiner Innenseite weist das dargestellte Schornsteinabdeckelement wie bereits erwähnt eine kältebrückenisolierte Dehnfugenmanschette 10 auf, welche in ein Schamottenrohr 11 eingreift. Das Schamottenrohr 11 seinerseits ist von einer Wärmedämmschicht 12 und diese wiederum von einem mit Hinterlüftungskanälen 13 versehenen Mantelstein 14 umgeben. Danach folgt die Ummauerung 15 und der Aussenputz 16.As already mentioned, the chimney cover element on its inside has an expansion joint sleeve 10 which is insulated from the cold bridge and which engages in a fireclay tube 11. The fireclay tube 11 in turn is surrounded by a heat insulation layer 12 and this in turn is surrounded by a casing block 14 provided with ventilation channels 13. After that follows the wall 15 and the exterior plaster 16.

Um eine Längenausdehnung des Schamottenrohres 11 nicht zu behindern, ist das Abdeckelement gegen die Dehnfugenmanschette 11 zu nach oben abgestuft ausgebildet. Mit dem äusseren, nach unter abgestuft ausgebildeten Teil liegt das Abdeckelement unter Bildung von in radialer Richtung von innen nach aussen sich erstreckenden Lüftungskanälen 17 auf der Schornsteinummantelung auf. Dazu kann zum Beispiel das Gitter 8 in diesem Bereich entsprechend gewellt ausgebildet sein. Auf diese Weise kann nun die zur Hinterlüftung dienende, durch die vertikal verlaufenden Kanäle 0 nach strömende Luft über die horizontal sich erstreckenden Lüftungskanäle 17 nach aussen ins Freie entweichen oder zu den dezentralen Feuerstätten gelangen.In order not to hinder a longitudinal expansion of the fireclay tube 11, the cover element is designed to be stepped upward against the expansion joint collar 11. With the outer part, which is formed in a stepped manner, the cover element lies on the chimney casing with the formation of ventilation channels 17 which extend in the radial direction from the inside to the outside. For this purpose, for example, the grating 8 can be correspondingly corrugated in this area. In this way, the air serving for rear ventilation and flowing through the vertically extending channels 0 to the outside via the horizontally extending ventilation channels 17 can escape to the outside or reach the decentralized fireplaces.

Auf die dargestellte Weise wird somit gleichzeitig auch eine einwandfreie Hinterlüftung des aus Wärmedämmstoff bestehenden Innenteils 3 erreicht, so dass dessen wärmedämmenden Eigenschaften selbst bei ungünstigsten Einsatzbedingungen voll erhalten bleiben.In the manner shown, a perfect rear ventilation of the inner part 3 made of thermal insulation material is thus achieved at the same time, so that its thermal insulating properties are fully retained even under the most unfavorable operating conditions.

Da die aus einer Chromstahllegierung bestehende Dehnfugenmanschette 10 gut wärmeleitend ist, und nicht von Aussenteilen des Schornsteinabdeckelementes über Kältebrücken abgekühlt werden kann, wird jede unerwünschte Eisbildung auf der Dehnfugenmanschette vermieden und gleichzeitig die Isolation 3 absolut trocken und damit dank der letzteren selbst der Austrittsbereich des Schamottenrohres 11 und die Dehnfugenmanschette 10 auf der gewünschten Temperatur gehalten.Since the expansion joint collar 10, which is made of a chromium steel alloy, is a good heat conductor and cannot be cooled by external parts of the chimney cover element via cold bridges, any undesirable ice formation on the expansion joint collar is avoided and at the same time the insulation 3 is absolutely dry and thus, thanks to the latter, even the outlet area of the chamotte tube 11 and the expansion joint collar 10 is kept at the desired temperature.

Im in Figur 1 dargestellten Ausführungsbeispiel ist das Schornsteinabdeckelement 2 über eine nicht dargestellte wärmedämmende Verbindung mit einem Schornsteinaufsatz 18 zu einer einzigen Einheit verbunden.In the exemplary embodiment shown in FIG. 1, the chimney cover element 2 is connected to a chimney cap 18 via a heat-insulating connection (not shown) to form a single unit.

Dieser Schornsteinaufsatz ist mit einem koaxial zum als Dehnfugenmanschette 10 ausgebildeten Rohrstutzen angeordneten, annähernd pyramidenstumpfförmigen Innenmantel 19 versehen, der diesen Rohrstutzen 10 nach oben überragt, sowie mit einem koaxial zu letzterem angeordneten, den Innenmantel 19 nach oben überragenden und von diesem unter Bildung einer Ringkammer 20 distanzierten, ebenfalls annähernd pyramidenstumpfförmigen Aussenmantel 21.This chimney cap is provided with an approximately truncated pyramid-shaped inner casing 19 which is arranged coaxially to the pipe socket as an expansion joint sleeve 10 and which projects above this pipe socket 10, and with a coaxial to the latter, which projects above the inner casing 19 and forms an annular chamber 20 therefrom distanced outer jacket 21, which is also approximately truncated pyramid.

Zur Erzielung möglichst Konstanter Druckverhältnisse an der Austrittsmündung des Schornsteines, das heisst im Innern des Schornsteinaufsatzes, und zwar über einen möglichst grossen Anströmbereich des Schornsteinaufsatzes 18, sind in den den Innen- und den Aussenmantel 19 respektive 21 bildenden Flächen Durchströmöffnungen 22 vorgesehen, denen Strömungsumlenkklappen 23 zugeordnet sind.In order to achieve constant pressure conditions at the outlet mouth of the chimney, that is to say inside the chimney cap, over the largest possible inflow area of the chimney cap 18, throughflow openings 22 are provided in the surfaces forming the inner and outer shells 19 and 21 respectively, the flow deflection flaps 23 assigned.

Bei dem in Figur 2 dargestellten zweiten Ausführungsbeispiel sind zu dem in Figur 1 dargestellten ersten Ausführungsbeispiel analoge Teile mit den gleichen Überweisungszeichen versehen, so dass sich eine nochmalige Beschreibung dieser Teile erübrigt.In the second exemplary embodiment shown in FIG. 2, parts that are analogous to the first exemplary embodiment shown in FIG. 1 are provided with the same reference symbols, so that a repeated description of these parts is unnecessary.

Bei diesem zweiten Ausführungsbeispiel ist das Abdeckelement mit seiner gitterförmig ausgebildeten Unterseite auf der nach oben gerichteten Stirnseite eines Konventionellen, nicht hinterlüfteten Schornsteines direkt aufgesetzt.In this second exemplary embodiment, the cover element with its grid-shaped underside is on the upward-facing end face of a conventional one, not ventilated chimney directly on.

Die Trockenhaltung bzw. Hinterlüftung des Wärmedämmstoffes 3 wird dadurch erreicht, dass der seitlich die Stirnseite des Schornsteines überragende Teil dieses Wärmedämmstoffes 3 über das Gitter 8 und den zwischen der Aussenseite der Ummauerung 15 und der Innenseite des Abtropfbleches 9 gebildeten, nach unten offenen, ringförmigen Zwischenraum 24 mit der Aussenatmosphäre in Verbindung steht.The dry insulation or rear ventilation of the thermal insulation material 3 is achieved in that the part of this thermal insulation material 3 projecting laterally beyond the front side of the chimney via the grille 8 and the annular space which is open at the bottom and is formed between the outside of the wall 15 and the inside of the drip tray 9 24 communicates with the outside atmosphere.

Auf diese Weise wird auch bei dieser Anordnung die Austrittsseite des Schornsteines sowie die über die aus temperaturbeständigem Silikonkautschuk bestehende Wärmeisolierung 28 mit der nach unten gerichteten Oberfläche der Oberseite 4 der Ummantelung 7 fest verbundene Dehnfugenmanschette 10 auf der gewünschten Temperatur gehalten und jedwelche Kondensatbildung im Abgasaustrittsbereich des Schornsteines vermieden.In this way, the outlet side of the chimney as well as the expansion joint collar 10, which is firmly connected to the downward-facing surface of the upper side 4 of the casing 7 via the temperature insulation made of temperature-resistant silicone rubber, is kept at the desired temperature and any condensate formation in the exhaust gas outlet area of the chimney avoided.

Um ein Hineinregnen in das Schornsteininnere auch bei den extremsten Luftanströmwinkeln ohne eine Beeinträchtigung der Wirkung des Schornsteinaufsatzes sicher zu vermeiden, ist bei dem in Fig. 1 dargestellten Ausführungsbeispiel im Innern des Oberteils des Aussenmantels (21) ein durch dessen obere Austrittsöffnung sich erstreckender, koaxial zur Aufsatzlängsaxe 25 angeordneter und längs dieser sich erstreckender rohrförmiger Strömungsführungsteil 26 angeordnet, dessen untere Eintrittsöffnung nach aussen abgewinkelt ist und in axialer Richtung des Aufsatzes gesehen die obere Austrittsöffnung des Innenmantels 19 überragt, und dessen obere Austrittsöffnung von der Unterseite eines Abdeckteiles 27 distanziert ist.In order to reliably avoid raining into the interior of the chimney even at the most extreme air flow angles without impairing the effect of the chimney cap, in the exemplary embodiment shown in FIG. 1 inside the upper part of the outer shell (21), coaxial with it, extending through its upper outlet opening Longitudinal axis of the top 25 arranged and arranged along this extending tubular flow guide part 26, the lower inlet opening of which is angled outwards and viewed in the axial direction of the top, projects beyond the upper outlet opening of the inner jacket 19, and the upper outlet opening of which is distanced from the underside of a cover part 27.

Claims (15)

1. Chimney cover element which covers the upper end face of a chimney cope of a brick-built chimney or a chimney produced from chimney elements, but which leaves the flue gas through opening free, characterized by a heat insulating part (3) comprising heat insulating material and surrounded on its upper and, seen in the horizontal direction, its inner and outer sides (5, 6) by a water-impermeable casing, the casing comprising metal on the inner side (5) and being connected in non-heat-conductive manner to the casing on the upper and outer sides (4, 6).
2. Chimney cover element according to Claim 1, characterized in that the inner side (5) of the casing (7) is securely connected in non-heat-conductive manner to the downwardly directed side of the upper side (4).
3. Chimney cover element according to Claim 1 or 2, characterized in that the inner side (5) of the casing (7) is formed by an expansion joint collar (10) which extends downwards in its axial direction beyond the heat insulating part (3).
4. Chimney cover element according to Claim 3, characterized in that the expansion joint collar (10) extends upwards in its axial direction beyond the heat insulating part (3), and this part (10a) of the expansion joint collar (10) extending upwards beyond the heat insulating part (3) is surrounded on its outer side by a heat insulating material (3a).
5. Chimney cover element according to one of Claims 1 to 4, characterized in that it is constructed is such that, when it is arranged on the chimney cope, at least part of the hoat insulating part (3) is in air-circulating connection with the external atmosphers.
6. Chimney cover element according to one of Claims 1 to 5, characterized in that the underside of the heat insulating part (3) bears upon a framework, network or perforated holding part (8) connected to the casing (7), and this framework, network or perforated holding part (8) comprises material of poor heat conduction or is connected via such a material to the upper and outer sides (4, 6) of the casing.
7. Chimney cover element according to one of Claims 1 to 6, characterized in that the casing (7) comprises a copper alloy or chrome nickel steel.
8. Chimney cover element according to one of Claims 1 to 7, characterized in that it is provided on its outer side with a drip-off plate (9) which projects laterally over the chimney cope and extends downwards.
9. Chimney cover element according to one of Claims 1 to 8 for a chimney provided with rear ventilation, characterized in that it is provided with spacer means to form at least one ventilation slot (17) extending radially between the underside thereof and the upwardly directed end face of the chimney cope to be covered, as far as the external atmosphere (Fig. 1).
10. Chimney cover element according to one of Claims 1 to 8, characterized in that its underside is constructed to bear upon the upwardly directed end face of the chimney and projects radially outwards beyond this end face, and in that at least the part projecting laterally beyond the end face of the chimney is of air-permeable construction (Fig. 2).
11. Chimney cover element according to one of Claims 1 to 10, characterized in that the inner side (5) of the casing (7) is connected in non-heat-conductive manner via a heat-resistant silicone caoutchouc (28), preferably to the downwardly directed upper face of the upper side (4) of the casing (7), so that this interrupts the cold bridge.
12. Chimney cowl having a chimney cover element (2) forming an integral component thereof according to one of Claims 1 to 10.
13. Chimney cowl according to Claim 12, characterized in that it is connected via heat-insulating means interrupting the cold bridge to the chimney cover element (7).
14. Chimney cowl according to Claim 12 or 13, characterized in that it is provided with an at least approximately truncated pyramid-shaped inner jacket (19) arranged coaxially with respect to the expansion joint collar (10) and projecting upwards beyond the pipe socket (10), and with an outer jacket (21) arranged coaxially to the latter, projecting upwards beyond the inner jacket (19) and spaced therefrom to form an annular chamber (20), and having at least approximately the shape of the generated surface of a regular prism or a truncated pyramid, and in that there is preferably provided in at least some of the surfaces forming the inner and/or outer jackets at least respectively one through-flow opening (22).
15. Chimney cowl according to Claim 14, characterized in that there is arranged in the interior of the upper part of the outer jacket (21) a tubular flow-guiding part (26) extending through the upper outlet opening of the outer jacket (21), projecting upwards beyond the outer jacket (21), arranged coaxially with respect to the longitudinal axis (25) of the cowl and extending along this longitudinal axis, the lower inlet opening of this flow-guiding part (26) being angled off outwards and projecting, as seen in the axial direction of the cowl, beyond the upper outlet opening of the inner jacket (19), and the upper outlet opening of this flow-guiding part (26) being spaced from the underside of a cover part (27).
EP88810419A 1987-06-18 1988-06-18 Covering element for chimney, and associated cowl Expired - Lifetime EP0296125B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810419T ATE63629T1 (en) 1987-06-18 1988-06-18 CHIMNEY COVER ELEMENT AND A CHIMNEY COAT CONNECTED TO SUCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2295/87A CH675466A5 (en) 1987-06-18 1987-06-18
CH2295/87 1987-06-18

Publications (3)

Publication Number Publication Date
EP0296125A2 EP0296125A2 (en) 1988-12-21
EP0296125A3 EP0296125A3 (en) 1989-04-12
EP0296125B1 true EP0296125B1 (en) 1991-05-15

Family

ID=4230437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810419A Expired - Lifetime EP0296125B1 (en) 1987-06-18 1988-06-18 Covering element for chimney, and associated cowl

Country Status (4)

Country Link
EP (1) EP0296125B1 (en)
AT (1) ATE63629T1 (en)
CH (1) CH675466A5 (en)
DE (1) DE3862813D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9302673U1 (en) * 1993-02-24 1993-04-08 Klb Klimaleichtblock Gmbh, 5450 Neuwied, De
DE9317651U1 (en) * 1993-11-18 1995-01-26 Klb Klimaleichtblock Gmbh Chimney head

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1659423A1 (en) * 1966-06-20 1972-01-13 Schiedel Gmbh & Co Prefabricated element for house chimneys and for chimneys with stronger firing and for chimneys
DE1759299C3 (en) * 1968-04-19 1974-05-02 Rolf 3001 Schulenburg Quante Chimney head lined with casing pipes
AT337943B (en) * 1975-06-19 1977-07-25 Bucher Georg EXPANSION JOINT PLATE FOR A CHIMNEY HEAD
DE3408099A1 (en) * 1984-03-05 1985-09-19 Krauss Kaminwerke München-Geiselbullach GmbH & Co KG, 8037 Olching Multi-layered chimney
DE8509295U1 (en) * 1985-03-28 1985-08-14 A. Upmann Kamintürenfabrik, 4830 Gütersloh Expansion joint cladding for a chimney

Also Published As

Publication number Publication date
CH675466A5 (en) 1990-09-28
EP0296125A2 (en) 1988-12-21
EP0296125A3 (en) 1989-04-12
DE3862813D1 (en) 1991-06-20
ATE63629T1 (en) 1991-06-15

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