EP0341523A1 - Chimney pipe element - Google Patents

Chimney pipe element Download PDF

Info

Publication number
EP0341523A1
EP0341523A1 EP89107825A EP89107825A EP0341523A1 EP 0341523 A1 EP0341523 A1 EP 0341523A1 EP 89107825 A EP89107825 A EP 89107825A EP 89107825 A EP89107825 A EP 89107825A EP 0341523 A1 EP0341523 A1 EP 0341523A1
Authority
EP
European Patent Office
Prior art keywords
pipe
chimney
element according
insert
inner jacket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89107825A
Other languages
German (de)
French (fr)
Other versions
EP0341523B1 (en
Inventor
Georges E. Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RMB-Handels AG
Original Assignee
RMB-Handels AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RMB-Handels AG filed Critical RMB-Handels AG
Priority to AT89107825T priority Critical patent/ATE84342T1/en
Publication of EP0341523A1 publication Critical patent/EP0341523A1/en
Application granted granted Critical
Publication of EP0341523B1 publication Critical patent/EP0341523B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00—Vertical ducts; Channels, e.g. for drainage
    • E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
    • 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
    • F23J13/025—Linings; Jackets; Casings composed of concentric elements, e.g. double walled
    • 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
    • F23J2213/40—Heat insulation fittings

Definitions

  • the invention relates to a chimney pipe element with a double-walled, supporting pipe, the outer and inner jacket of which are designed as metal pipes and are connected to one another by means of end caps.
  • chimney pipe elements have been known for a long time. They are used as prefabricated elements for the construction of fireplaces, especially for wood and solid fuel firing.
  • the double-walled structure is intended to serve as thermal insulation so that the outer jacket does not experience excessive temperatures. Even when using thermal insulation materials in the space between the outer and inner pipe, the thermal insulation has proven to be insufficient, especially at high exhaust gas temperatures, such as those that occur with wood firing.
  • the insert tube made of bonded ceramic fibers, preferably aluminum oxide silicate fibers, can thus form a continuous, heat-insulating flue gas tube, while the double-walled tube has a predominantly supporting function.
  • the condensate possibly formed by the thermal insulation and the associated temperature gradients in the insert tube is evaporated by the air circulation in the space mentioned and discharged to the outside. Since the insert tube does not essentially touch the inner jacket, the condensate does not usually get onto the inner tube and otherwise also dries out. With this construction, it can in particular be avoided that parts of the outer tube in the area of the end caps are touched by the flue gas duct, thus preventing thermal bridges.
  • FIG. 1 a chimney pipe element according to the invention is shown in section perpendicular to its axis.
  • a double-walled, supporting tube 1 has a tubular outer jacket 4 and an inner jacket 5, between which a thermal insulation 6, e.g. is arranged from a mat of ceramic fibers or mineral wool.
  • Inner and outer jacket 4,5 are made of stainless steel, the inner jacket e.g. can be made of particularly corrosion-resistant chrome-nickel-molybdenum stainless steel with a wall thickness of 1 mm.
  • the inner and outer shells are connected to one another via upper and lower metal end caps 9, 10 (FIG. 2) and thus form a load-bearing, rigid element.
  • the individual elements are inserted with their end caps, as shown in Fig. 2.
  • the profile of the end caps 9, 10 can be designed in a known manner in different ways. Their mounting, centering and sealing functions are essential.
  • a fireproof, corrosion-insensitive insert tube 2 made of bonded ceramic (aluminum oxide silicate) fibers is arranged within this supporting tube.
  • An intermediate space 3 is formed by means of webs 7 between this insert tube 2 and the supporting tube 1.
  • the webs 7 determine the distance between the inner jacket 5 of the supporting tube 1 and the insert tube 2 and di Enen to hold the same in the supporting tube 1.
  • the webs 7 are connected to the inner jacket 5 by gluing. Because the bonded ceramic fibers, which form the insert tube 2, have a relatively low, mechanical stability, they are not designed as load-bearing parts.
  • the insert pipes 2 of adjacent chimney pipe elements adjoin one another in the region of the end caps and form a flue gas duct 8 which does not touch the supporting pipe 1.
  • the space 3 between the outside of the insert tube 2 and the supporting tube 1 extends over the entire length of the element and adjoins the corresponding space of the neighboring element. Air circulation can thus take place through the chimney along the outside of the insert tube 2 or along the inner jacket 5 of the supporting tube. If only three narrow webs 7 are provided, as shown in FIG. 1, the circulation in the longitudinal direction of the chimney is retained irrespective of a twisted mounting of adjacent elements, as is indicated by dashed lines in FIG. 1. The webs 7 'of the neighboring element do not interfere.
  • markings 12 are provided for the position of the webs in the region of the end caps (FIG. 3), which permit correct positioning during assembly.
  • FIG. 4 Such an insert tube configuration is shown in FIG. 4.
  • a large number of webs 7 is distributed over the circumference of the insert tube 2. Since the bonded fiber ceramic material does not have great inherent stability, this can be improved by the larger number of webs or ribs 7.
  • a lower chimney Pipe element air passages 11 can be provided through the supporting tube 1 in the intermediate space 3.
  • the insert pipe 2 serves, as mentioned, to guide the flue gas, as indicated by arrows 14 in FIG. 2.
  • the ceramic fibers which are formed in a manner known per se by vacuum forming from a mixture of short-cut alumina silicate fibers with a binder (e.g. cement) to form insert tube 2, form a fire-resistant, heat-insulating, but not completely vapor-tight chimney.
  • the vapor diffusion in connection with the temperature gradient in the insert tube can lead to condensation of moisture. Thanks to the space 3 between the insert tube 2 and the inner jacket of the supporting tube, this condensate essentially does not reach this inner jacket.
  • the air circulation in this space 3 also prevents the condensate from accumulating for a long time.
  • the temperature on the inner jacket 5 of the supporting tube 1 is significantly reduced in operation by the thermal insulation of the insert tube 2 and the intermediate space 3, so that, despite the thermal bridges at the end caps 9, 10, the outer jacket 4 assumes a temperature which is below the permissible maximum values.
  • the webs 7 can be designed in different ways. In the variant shown in the figures, the minimum number of three webs 7 is provided, which extend over the entire length of the element and thus delimit longitudinal channels.
  • the webs are not continuous over the entire element, but rather are interrupted in the longitudinal direction. In particular, they can also be provided only in the area of the end caps.
  • the webs 7 are preferably molded in with the vacuum forming of the insert tubes. However, it is also possible to use them to be retrofitted to the outside on a cylindrically shaped fiber ceramic insert tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chimneys And Flues (AREA)
  • Thermal Insulation (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

The element has a double-walled, supporting pipe, the outer and inner shell (4, 5) of which are in the form of metal pipes. The outer and the inner shell (4, 5) are connected by means of end caps (9, 10). The cavity between them is filled with an insulating material (6). A refractory lining pipe (2) made of bonded ceramic fibres is provided in the supporting pipe (1). An intermediate space (3) is formed between the outer side of the lining pipe and the inner shell (5). Consequently, the aggressive condensate produced in the lining pipe does not substantially reach the inner shell (5) and is evaporated by the air circulation in the intermediate space, so that no corrosion occurs. The lining pipe (2) serves as flue-gas passage and as heat insulation, so that the flow of heat to the supporting pipe part is checked and the maximum permissible temperature values at its outer shell (5) are not exceeded. <IMAGE>

Description

Die Erfindung betrifft ein Kaminrohrelement mit einem doppelwandigen, tragenden Rohr, dessen Aussen- und Innenmantel als Metallrohre ausgebildet und mittels Endkappen miteinander verbunden sind.The invention relates to a chimney pipe element with a double-walled, supporting pipe, the outer and inner jacket of which are designed as metal pipes and are connected to one another by means of end caps.

Solche Kaminrohrelemente sind seit langem bekannt. Sie werden als vorgefrtigte Elemente zum Aufbau von Kaminen insbesondere für Holz- und Festbrennstoff­feuerungen verwendet. Der doppelwandige Aufbau soll der Wärmedämmung dienen, so dass am Aussenmantel nicht zu hohe Temperaturen auftreten. Selbst unter Einsatz von Wärmedämmstoffen im Raum zwischen Aussen- und Innenrohr hat sich die Wärmedämmung besonders bei hohen Abgastem­peraturen, wie sie bei der Holzfeuerung auftreten, als ungenügend erwiesen.Such chimney pipe elements have been known for a long time. They are used as prefabricated elements for the construction of fireplaces, especially for wood and solid fuel firing. The double-walled structure is intended to serve as thermal insulation so that the outer jacket does not experience excessive temperatures. Even when using thermal insulation materials in the space between the outer and inner pipe, the thermal insulation has proven to be insufficient, especially at high exhaust gas temperatures, such as those that occur with wood firing.

Es ist deshalb bereits vorgeschlagen worden (vgl. EU-Pat. Nr. 0 038 211) den Innenmantel des doppel­wandigen, tragenden Rohrs aus gebundenen, keramischen Fasern auszubilden. Damit kann die Wärmedämmung zwar verbessert werden. Insbesondere an den Endkappen werden jedoch Wärmebrücken gebildet, falls diese aus Metall bestehen. Bestehen die Endkappen andererseits ebenfalls aus gebundenen keramischen Fasern, so weist das Rohr für Lagerung, Transport, Montage und Betrieb in diesem Be­reich keine ausreichende Festigkeit auf, so dass mit grosser Wahrscheinlichkeit Beschädigungen auftreten, womit die Stossstellen zwischen aneinandergrenzenden Ele­menten nicht mehr dicht sind. Die Ausgestaltung des In­ nenmantels aus gebundenen, keramischen Fasern hat zudem den gravierenden Nachteil, dass darin durch das Tempera­turgefälle Feuchtigkeit des Rauchgases kondensiert und das Kondensat in die Wärmedämmung zwischen Innen- und Aussenrohr eintritt. Damit verliert diese ihre Wirkung und der Aussenmantel aus Metall kann durch das aggressive Kondensat von der Innenseite her korrodieren.It has therefore already been proposed (cf. EU Pat. No. 0 038 211) to form the inner jacket of the double-walled, load-bearing tube from bonded, ceramic fibers. Thermal insulation can thus be improved. However, thermal bridges are formed in particular on the end caps if they are made of metal. If, on the other hand, the end caps are also made of bonded ceramic fibers, the tube for storage, transport, assembly and operation in this area does not have sufficient strength, so that there is a high probability of damage, with the result that the joints between adjacent elements are no longer tight. The design of the In The outer jacket made of bonded ceramic fibers also has the serious disadvantage that the temperature gradient causes moisture in the flue gas to condense and the condensate to enter the thermal insulation between the inner and outer tubes. This loses its effectiveness and the metal outer jacket can corrode from the inside due to the aggressive condensate.

Es stellt sich damit die Aufgabe, ein Kamin­rohrelement der eingangs erwähnten Art derart zu verbessern, dass eine gute Wärmedämmung über die gesamte Länge, insbesondere auch im Bereich der Endkappen, erzielbar ist, so dass am Aussenmantel nicht zu hohe Temperaturen auftreten und dass zugleich keine Korrosionsprobleme durch kondensierte Feuchtigkeit entstehen.It is therefore the task of improving a chimney pipe element of the type mentioned at the outset in such a way that good thermal insulation can be achieved over the entire length, in particular also in the area of the end caps, so that temperatures which are not too high occur on the outer jacket and at the same time there are no corrosion problems caused by condensed moisture.

Diese Aufgabe wird gelöst durch ein Ein­satzrohr aus gebundenen keramischen Fasern, das am Innen­mantel des tragenden Rohrs angebracht ist derart, dass zwischen seiner Aussenseite und dem Innenmantel ein Zwis­chenraum gebildet ist.This object is achieved by an insert tube made of bonded ceramic fibers, which is attached to the inner jacket of the supporting tube in such a way that an intermediate space is formed between its outside and the inner jacket.

Das Einsatzrohr aus gebundenen, keramischen Fasern, vorzugsweise Aluminiumoxidsilikatfasern, kann damit ein durchgehendes wärmedämmendes Rauchgasrohr bilden, während das doppelwandige Rohr vorwiegend Trag­funktion hat. Das durch die Wärmedämmung und den damit verbundenen Temperaturgradienten im Einsatzrohr allfällig gebildete Kondensat wird durch die Luftzirkulation im er­wähnten Zwischenraum verdunstet und nach aussen abge­führt. Da das Einsatzrohr den Innenmantel im wesentlichen nicht berührt, gelangt das Kondensat in der Regel gar nicht auf das Innenrohr und trocknet sonst ebenfalls aus. Es kann mit diesem Aufbau insbesondere vermieden werden, dass Teile des Aussenrohrs im Bereich der Endkappen vom Rauchgaskanal berührt werden, womit Wärmebrücken verhin­dert werden.The insert tube made of bonded ceramic fibers, preferably aluminum oxide silicate fibers, can thus form a continuous, heat-insulating flue gas tube, while the double-walled tube has a predominantly supporting function. The condensate possibly formed by the thermal insulation and the associated temperature gradients in the insert tube is evaporated by the air circulation in the space mentioned and discharged to the outside. Since the insert tube does not essentially touch the inner jacket, the condensate does not usually get onto the inner tube and otherwise also dries out. With this construction, it can in particular be avoided that parts of the outer tube in the area of the end caps are touched by the flue gas duct, thus preventing thermal bridges.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der beiliegenden Zeichnung näher beschrieben. Darin zeigen:

  • Fig. 1 eine Schnittansicht senkrecht zur Achse eines Kaminrohrelements,
  • Fig. 2 einen Längsschnitt durch mehrere Ele­mente, und
  • Fig. 3 eine Ansicht der Elemente gemäss Fig. 2, und
  • Fig. 4 eine Schnittansicht wie in Fig. 1 durch eine zweite Ausführungsform.
An exemplary embodiment of the invention is described in more detail below with reference to the accompanying drawing. In it show:
  • 1 is a sectional view perpendicular to the axis of a chimney pipe element,
  • Fig. 2 shows a longitudinal section through several elements, and
  • Fig. 3 is a view of the elements of FIG. 2, and
  • Fig. 4 is a sectional view as in Fig. 1 by a second embodiment.

In Fig. 1 ist ein Kaminrohrelement gemäss der Erfindung im Schnitt senkrecht zu seiner Achse dargestellt. Ein doppelwandiges, tragendes Rohr 1 besitzt einen rohrförmigen Aussenmantel 4 und einen Innenmantel 5, zwischen denen eine Wärmedämmung 6, z.B. aus einer Matte keramischer Fasern oder Mineralstoffwolle angeord­net ist. Innen- und Aussenmantel 4,5 bestehen aus Edel­stahl, wobei der Innenmantel z.B. aus besonders korro­sionsbeständigem Chrom-Nickel-Molybdän-Edelstahl mit einer Wandstärke von 1 mm gefertigt sein kann. Innen- und Aussenmantel sind über obere und untere Metallendkappen 9,10 miteinander verbunden (Fig. 2) und bilden so ein tragendes, steifes Element. Zum Aufbau eines Kamins wer­den die einzelnen Elemente mit ihren Endkappen ineinan­dergefügt, wie in Fig. 2 dargestellt ist. Die Profi­lierung der Endkappen 9,10 kann dabei in sich bekannter Weise auf unterschiedliche Art gestaltet sein. Wesentlich ist ihre Halterungs-, Zentrierungs- und Dichtungsfunk­tion.In Fig. 1 a chimney pipe element according to the invention is shown in section perpendicular to its axis. A double-walled, supporting tube 1 has a tubular outer jacket 4 and an inner jacket 5, between which a thermal insulation 6, e.g. is arranged from a mat of ceramic fibers or mineral wool. Inner and outer jacket 4,5 are made of stainless steel, the inner jacket e.g. can be made of particularly corrosion-resistant chrome-nickel-molybdenum stainless steel with a wall thickness of 1 mm. The inner and outer shells are connected to one another via upper and lower metal end caps 9, 10 (FIG. 2) and thus form a load-bearing, rigid element. To build a fireplace, the individual elements are inserted with their end caps, as shown in Fig. 2. The profile of the end caps 9, 10 can be designed in a known manner in different ways. Their mounting, centering and sealing functions are essential.

Innerhalb dieses tragenden Rohrs ist ein feuerfestes, korrosionsunempfindliches Einsatzrohr 2 aus gebundenen, keramischen (Aluminiumoxidsilikat-)Fasern an­geordnet. Zwischen diesem Einsatzrohr 2 und dem tragenden Rohr 1 ist mittels Stegen 7 ein Zwischenraum 3 gebildet. Die Stege 7 bestimmen den Abstand zwischen dem Innenman­tel 5 des tragenden Rohrs 1 und dem Einsatzrohr 2 und di­ enen zur Halterung desselben im tragenden Rohr 1. Zu diesem Zweck sind die Stege 7 durch Verklebung mit dem Innenmantel 5 verbunden. Weil die gebundenen keramischen Fasern, welche das Einsatzrohr 2 bilden, eine relativ geringe, mechanische Stabilität besitzen, sind sie nicht als tragende Teile ausgebildet.A fireproof, corrosion-insensitive insert tube 2 made of bonded ceramic (aluminum oxide silicate) fibers is arranged within this supporting tube. An intermediate space 3 is formed by means of webs 7 between this insert tube 2 and the supporting tube 1. The webs 7 determine the distance between the inner jacket 5 of the supporting tube 1 and the insert tube 2 and di Enen to hold the same in the supporting tube 1. For this purpose, the webs 7 are connected to the inner jacket 5 by gluing. Because the bonded ceramic fibers, which form the insert tube 2, have a relatively low, mechanical stability, they are not designed as load-bearing parts.

Wie sich insbesondere aus Fig. 2 ergibt, schliessen die Einsatzrohre 2 benachbarter Kaminrohrele­mente im Bereich der Endkappen aneinander an und bilden einen Rauchgaskanal 8, der das tragende Rohr 1 nicht berührt. Der Zwischenraum 3 zwischen dem Aeusseren des Einsatzrohrs 2 und dem tragenden Rohr 1 erstreckt sich über die gesamte Länge des Elements und schliesst an den entsprechenden Zwischenraum des Nachbarelements an. Es kann damit entlang dem Aeusseren des Einsatzrohrs 2 bzw. entlang dem Innenmantel 5 des tragenden Rohrs eine Luftzirkulation durch das Kamin stattfinden. Werden nur drei schmale Stege 7 vorgesehen, wie in Fig. 1 gezeigt, so bleibt die Zirkulation in Kaminlängsrichtung ungeachtet einer verdrehten Montage benachbarter Elemente erhalten, wie dies in Fig. 1 gestrichelt angedeutet ist. Die Stege 7′ des Nachbarelements stören dabei nicht. Bei mehreren oder breiteren Stegen, wie sie etwa bei grösseren Kamindurchmessern vorgesehen sein können, kann es von Vorteil sein, diese bei benachbarten Elementen aufeinander auszurichten. Hierzu sind für diese Fälle Markierungen 12 für die Lage der Stege im Bereich der Endkappen vorgesehen (Fig. 3), welche bei der Montage die richtige Positionierung gestatten.As can be seen in particular from FIG. 2, the insert pipes 2 of adjacent chimney pipe elements adjoin one another in the region of the end caps and form a flue gas duct 8 which does not touch the supporting pipe 1. The space 3 between the outside of the insert tube 2 and the supporting tube 1 extends over the entire length of the element and adjoins the corresponding space of the neighboring element. Air circulation can thus take place through the chimney along the outside of the insert tube 2 or along the inner jacket 5 of the supporting tube. If only three narrow webs 7 are provided, as shown in FIG. 1, the circulation in the longitudinal direction of the chimney is retained irrespective of a twisted mounting of adjacent elements, as is indicated by dashed lines in FIG. 1. The webs 7 'of the neighboring element do not interfere. In the case of several or wider webs, such as can be provided for larger chimney diameters, it can be advantageous to align them with one another in the case of adjacent elements. For this purpose, markings 12 are provided for the position of the webs in the region of the end caps (FIG. 3), which permit correct positioning during assembly.

Eine solche Einsatzrohrausgestaltung ist in Fig. 4 gezeigt. Dabei ist eine Vielzahl von Stegen 7 über den Umfang des Einsatzrohrs 2 verteilt. Da das gebundene Fiberkeramikmaterial keine grosse Eigenstabilität aufweist, kann diese durch die grössere Anzahl von Stegen oder Rippen 7 verbessert werden.Such an insert tube configuration is shown in FIG. 4. A large number of webs 7 is distributed over the circumference of the insert tube 2. Since the bonded fiber ceramic material does not have great inherent stability, this can be improved by the larger number of webs or ribs 7.

Ebenfalls zur Verbesserung der Luftzir­kulation im Zwischenraum 3 können an einem unteren Kamin­ rohrelement Luftdurchtritte 11 durch das tragende Rohr 1 in den Zwischenraum 3 vorgesehen sein.Also to improve the air circulation in the intermediate space 3 can a lower chimney Pipe element air passages 11 can be provided through the supporting tube 1 in the intermediate space 3.

Im Betrieb dient das Einsatzrohr 2, wie er­wähnt, zur Rauchgasführung, wie mit Pfeilen 14 in Fig. 2 angedeutet ist. Die keramischen Fasern, welche in an sich bekannter Weise durch Vakuumformung aus einer Mischung von kurz geschnittenen Aluminiumoxidsilikatfasern mit einem Binder (z.B. Zement) zum Einsatzrohr 2 geformt wer­den, bilden dabei ein feuerfestes, wärmedämmendes, jedoch nicht vollständig dampfdichtes Kamin. Die Dampfdiffusion kann in Verbindung mit dem Temperaturgradienten im Ein­satzrohr zur Kondensation von Feuchtigkeit führen. Dank dem Zwischenraum 3 zwischen Einsatzrohr 2 und Innenmantel des tragenden Rohrs gelangt dieses Kondensat im wesentlichen jedoch nicht auf diesen Innenmantel. Die Luftzirkulation in diesem Zwischenraum 3 verhindert ferner, dass sich das Kondensat längere Zeit ansammelt. Es trocknet schon während dem Betrieb, aber auch im nicht betriebenen Zustand des Kamins durch die zirkulierende Luft. Die Temperatur am Innenmantel 5 des tragenden Rohrs 1 ist im Betrieb durch die Wärmedämmung des Einsatzrohrs 2 und den Zwischenraum 3 erheblich herabgesetzt, so dass trotz der Wärmebrücken an den Endkappen 9, 10 der Aussen­mantel 4 eine Temperatur annimmt, die unter den zulässi­gen Höchstwerten liegt.In operation, the insert pipe 2 serves, as mentioned, to guide the flue gas, as indicated by arrows 14 in FIG. 2. The ceramic fibers, which are formed in a manner known per se by vacuum forming from a mixture of short-cut alumina silicate fibers with a binder (e.g. cement) to form insert tube 2, form a fire-resistant, heat-insulating, but not completely vapor-tight chimney. The vapor diffusion in connection with the temperature gradient in the insert tube can lead to condensation of moisture. Thanks to the space 3 between the insert tube 2 and the inner jacket of the supporting tube, this condensate essentially does not reach this inner jacket. The air circulation in this space 3 also prevents the condensate from accumulating for a long time. It dries through the circulating air during operation, but also when the fireplace is not in use. The temperature on the inner jacket 5 of the supporting tube 1 is significantly reduced in operation by the thermal insulation of the insert tube 2 and the intermediate space 3, so that, despite the thermal bridges at the end caps 9, 10, the outer jacket 4 assumes a temperature which is below the permissible maximum values.

Wie bereits erwähnt, kann die Ausgestaltung der Stege 7 auf verschiedene Weise erfolgen. Bei der in den Figuren gezeigten Variante ist die Minimalanzahl von drei Stegen 7 vorgesehen, die sich über die ganze Länge des Elements erstrecken und damit Längskanäle begrenzen.As already mentioned, the webs 7 can be designed in different ways. In the variant shown in the figures, the minimum number of three webs 7 is provided, which extend over the entire length of the element and thus delimit longitudinal channels.

In einer anderen Variante sind die Stege nicht über das ganze Element durchlaufend, sondern in Längsrichtung unterbrochen. Insbesondere können sie auch nur im Bereich der Endkappen vorgesehen sein. Die Stege 7 werden vorzugsweise bei der Vakuumformung der Ein­satzrohre mit eingeformt. Es ist jedoch auch möglich, sie nachträglich aussen an einem zylindrisch geformten Ein­satzrohr aus Fiberkeramik anzubringen.In another variant, the webs are not continuous over the entire element, but rather are interrupted in the longitudinal direction. In particular, they can also be provided only in the area of the end caps. The webs 7 are preferably molded in with the vacuum forming of the insert tubes. However, it is also possible to use them to be retrofitted to the outside on a cylindrically shaped fiber ceramic insert tube.

Insgesamt ergeben die beschriebenen Massnah­men ein Kaminrohrelement, das auch bei schwierigen Feuerungsbedingungen an seiner Aussenseite keine unzuläs­sigen Temperaturwerte annimmt und zugleich gegen Korro­sion durch aggressive Kondensate unempfindlich ist. Zudem ist das Element einfach aufgebaut und deshalb kostengün­stig herzustellen.Overall, the measures described result in a chimney pipe element which, even in difficult firing conditions, does not assume inadmissible temperature values on the outside and at the same time is insensitive to corrosion by aggressive condensates. In addition, the element is simple and therefore inexpensive to manufacture.

Claims (10)

1. Kaminrohrelement mit einem doppelwandigen, tragenden Rohr (1), dessen Aussen- und Innenmantel (4,5) als Metallrohre ausgebildet und mittels Endkappen (9,10) miteinander verbunden sind, gekennzeichnet durch ein Ein­satzrohr (2) aus gebundenen keramischen Fasern, das am Innenmantel des tragenden Rohrs (1) angebracht ist der­art, dass zwischen seiner Aussenseite und dem Innenmantel ein Zwischenraum (3) gebildet ist.1. chimney pipe element with a double-walled, load-bearing pipe (1), the outer and inner jacket (4,5) of which are designed as metal pipes and are connected to one another by means of end caps (9, 10), characterized by an insert pipe (2) made of bonded ceramic fibers, which is attached to the inner jacket of the supporting tube (1) such that an intermediate space (3) is formed between its outside and the inner jacket. 2. Kaminrohrelement nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem Aussen- und dem Innen­mantel des tragenden Rohrs keramische Fasern als Wärmedämmung angeordnet sind.2. Chimney pipe element according to claim 1, characterized in that ceramic fibers are arranged as thermal insulation between the outer and the inner jacket of the supporting tube. 3. Kaminrohrelement nach einem der vorange­henden Ansprüche, dadurch gekennzeichnet, dass der Zwis­chenraum (3) zwischen dem Einsatzrohr und dem Innenmantel sich über die gesamte Länge des Elements erstreckt.3. chimney pipe element according to one of the preceding claims, characterized in that the intermediate space (3) between the insert pipe and the inner jacket extends over the entire length of the element. 4. Kaminrohrelement nach einem der vorange­henden Ansprüche, dadurch gekennzeichnet, dass das Ein­satzrohr (2) über die gesamte Kaminlänge den Rauch­gaskanal begrenzt derart, dass Teile des tragenden Rohrs nicht in den Rauchgaskanal eingreifen.4. chimney pipe element according to one of the preceding claims, characterized in that the insert pipe (2) over the entire length of the chimney limits the flue gas duct in such a way that parts of the supporting pipe do not engage in the flue gas duct. 5. Kaminrohrelement nach einem der vorange­henden Ansprüche, dadurch gekennzeichnet, dass das Ein­satzrohr einen kleineren Aussendurchmesser aufweist als der Innenmantel (5) des tragenden Rohrs (1) und mit diesem über Stege (7) verbunden ist.5. Chimney pipe element according to one of the preceding claims, characterized in that the insert pipe has a smaller outer diameter than the inner jacket (5) of the supporting pipe (1) and is connected to it via webs (7). 6. Kaminrohrelement nach Anspruch 5, dadurch gekennzeichnet, dass die Stege (7) an das Einsatzrohr (2) angeformt sind.6. chimney pipe element according to claim 5, characterized in that the webs (7) are integrally formed on the insert pipe (2). 7. Kaminrohrelement nach einem der vorange­henden Ansprüche, dadurch gekennzeichnet, dass das Ein­satzrohr aus gebundenen Aluminiumoxidsilikatfasern geformt ist.7. chimney pipe element according to one of the preceding claims, characterized in that the insert pipe is formed from bound aluminum oxide silicate fibers. 8. Kaminrohrelement nach Anspruch 5, dadurch gekennzeichnet, dass die Stege (7) in Längsrichtung aussen am Einsatzrohr (2) angeformt sind und zwischen sich Längskanäle über die gesamte Rohrlänge freilassen.8. chimney pipe element according to claim 5, characterized in that the webs (7) in the longitudinal direction are molded on the outside of the insert tube (2) and leave longitudinal channels between them over the entire length of the tube. 9. Kaminrohrelement nach Anspruch 8, dadurch gekennzeichnet, dass im Bereich der Endkappen (9,10) des tragenden Rohrs Mittel (12) zum gegenseitigen Ausrichten der Längskanäle benachbarter Elemente vorgesehen sind.9. chimney pipe element according to claim 8, characterized in that in the region of the end caps (9, 10) of the supporting pipe means (12) are provided for mutually aligning the longitudinal channels of adjacent elements. 10. Kaminrohrelement nach einem der vorange­henden Ansprüche, dadurch gekennzeichnet, dass im tragen­den Rohr Luftdurchtritte (11) in den Zwischenraum (3) zwischen seinem Innenmantel und dem Einsatzrohr vorgese­hen sind.10. Chimney pipe element according to one of the preceding claims, characterized in that air passages (11) in the intermediate space (3) between its inner jacket and the insert tube are provided in the supporting tube.
EP89107825A 1988-05-09 1989-04-29 Chimney pipe element Expired - Lifetime EP0341523B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107825T ATE84342T1 (en) 1988-05-09 1989-04-29 CHIMNEY ELEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1754/88A CH676271A5 (en) 1988-05-09 1988-05-09
CH1754/88 1988-05-09

Publications (2)

Publication Number Publication Date
EP0341523A1 true EP0341523A1 (en) 1989-11-15
EP0341523B1 EP0341523B1 (en) 1993-01-07

Family

ID=4217781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107825A Expired - Lifetime EP0341523B1 (en) 1988-05-09 1989-04-29 Chimney pipe element

Country Status (4)

Country Link
EP (1) EP0341523B1 (en)
AT (1) ATE84342T1 (en)
CH (1) CH676271A5 (en)
DE (1) DE58903205D1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661244A1 (en) * 1990-04-19 1991-10-25 Olifan Vibracim Sa Protective end-piece for boiler tube and its method of manufacture
DE4106835A1 (en) * 1991-03-04 1992-09-24 Karl Heinz Vahlbrauk Prefab. chimney stack with inner steel flue pipe - has sections joined by joints formed with polymer
DE19825477A1 (en) * 1998-06-08 1999-12-16 Centrotherm Abgastechnik Gmbh External wall chimney for buildings
EP1116917A1 (en) * 2000-01-17 2001-07-18 Etablissements Pomel Tube, in particular a smoke pipe with a concentric ventilation duct
EP2851486A1 (en) * 2013-07-19 2015-03-25 Kai Schumann Concentric chimney construction with inlet and exhaust air duct

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO337800B1 (en) * 2014-04-01 2016-06-27 Roar Gulbrandsen Chimney pipe and method for repairing such a chimney pipe.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264227A (en) * 1946-01-26 1949-10-15 Bostadsforskning Ab Stack.
FR1222642A (en) * 1959-01-19 1960-06-10 Brev Calad Soc D Expl Des Improvements to fireplaces and the like
US3631789A (en) * 1970-09-28 1972-01-04 Lewis R Kinsey Metal chimney with ceramic lining
EP0038211A2 (en) * 1980-04-16 1981-10-21 Insulated Chimneys (Trim) Limited Insulated chimney pipes
GB2156503A (en) * 1984-03-29 1985-10-09 Luciano Baccelliere A chimney in prefabricated modulator elements
DE8508131U1 (en) * 1985-03-19 1988-01-28 Vahlbrauk, Karl Heinz, 3353 Bad Gandersheim Pipe for chimneys

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264227A (en) * 1946-01-26 1949-10-15 Bostadsforskning Ab Stack.
FR1222642A (en) * 1959-01-19 1960-06-10 Brev Calad Soc D Expl Des Improvements to fireplaces and the like
US3631789A (en) * 1970-09-28 1972-01-04 Lewis R Kinsey Metal chimney with ceramic lining
EP0038211A2 (en) * 1980-04-16 1981-10-21 Insulated Chimneys (Trim) Limited Insulated chimney pipes
GB2156503A (en) * 1984-03-29 1985-10-09 Luciano Baccelliere A chimney in prefabricated modulator elements
DE8508131U1 (en) * 1985-03-19 1988-01-28 Vahlbrauk, Karl Heinz, 3353 Bad Gandersheim Pipe for chimneys

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661244A1 (en) * 1990-04-19 1991-10-25 Olifan Vibracim Sa Protective end-piece for boiler tube and its method of manufacture
DE4106835A1 (en) * 1991-03-04 1992-09-24 Karl Heinz Vahlbrauk Prefab. chimney stack with inner steel flue pipe - has sections joined by joints formed with polymer
DE19825477A1 (en) * 1998-06-08 1999-12-16 Centrotherm Abgastechnik Gmbh External wall chimney for buildings
DE19825477C2 (en) * 1998-06-08 2003-03-27 Ct Therm Abgastechnik Gmbh Outer wall fireplace
EP1116917A1 (en) * 2000-01-17 2001-07-18 Etablissements Pomel Tube, in particular a smoke pipe with a concentric ventilation duct
FR2803896A1 (en) * 2000-01-17 2001-07-20 Pomel Ets DUCT, ESPECIALLY SMOKE DUCT, WITH CONCENTRIC VENTILATION DUCT
EP2851486A1 (en) * 2013-07-19 2015-03-25 Kai Schumann Concentric chimney construction with inlet and exhaust air duct

Also Published As

Publication number Publication date
CH676271A5 (en) 1990-12-28
EP0341523B1 (en) 1993-01-07
DE58903205D1 (en) 1993-02-18
ATE84342T1 (en) 1993-01-15

Similar Documents

Publication Publication Date Title
DE2660373C3 (en) Cooling element through which fluid flows
DE3420554C2 (en)
EP0341523B1 (en) Chimney pipe element
DE3145292C2 (en) Tube fission furnace for indirect heating of fissile media
EP0256416A1 (en) Exhaust gas cleaning device
DE8807278U1 (en) Chimney head construction for prefabricated chimney, especially cover plate for this
CH670858A5 (en)
DE3445319A1 (en) Gas outflow device
CH672810A5 (en)
EP0787272B1 (en) Cooling surface cladding
DE3226913A1 (en) Chimney with separate ventilation
EP0123995A1 (en) Condensing boiler with a spirally coiled heat exchanger part
DE2504257C2 (en) Central heating boiler
EP0711954B1 (en) Air/flue gas stack
DE2942167C2 (en) Combustion chamber for a boiler heated with liquid or gaseous fuels
DE3546368A1 (en) Heating boiler
DE3206701A1 (en) HEAT EXCHANGER FOR HEAT PUMPS
DE10158299A1 (en) Water tube boiler
CH663267A5 (en) CHIMNEY.
EP1116835A2 (en) Duct for chimneys or for exhaust lines
DE7930761U1 (en) HEAT EXCHANGER
DE8536716U1 (en) boiler
EP0387584A2 (en) Heating gas draft tube
DE3525603A1 (en) Device for combustion support for oil or gas burners
DE924987C (en) Inclined tube chamber boiler

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR IT

17P Request for examination filed

Effective date: 19900512

17Q First examination report despatched

Effective date: 19910531

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930107

REF Corresponds to:

Ref document number: 84342

Country of ref document: AT

Date of ref document: 19930115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58903205

Country of ref document: DE

Date of ref document: 19930218

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980407

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980417

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980429

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000201