EP1561996B1 - Shut-Off Device for a Gas Conveying Tube - Google Patents

Shut-Off Device for a Gas Conveying Tube Download PDF

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Publication number
EP1561996B1
EP1561996B1 EP20040026555 EP04026555A EP1561996B1 EP 1561996 B1 EP1561996 B1 EP 1561996B1 EP 20040026555 EP20040026555 EP 20040026555 EP 04026555 A EP04026555 A EP 04026555A EP 1561996 B1 EP1561996 B1 EP 1561996B1
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EP
European Patent Office
Prior art keywords
shut
flap
sealing material
tubular section
sealing
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.)
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EP20040026555
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German (de)
French (fr)
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EP1561996A1 (en
Inventor
Pabst Manfred
Thomann Hans-Peter
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Kutzner and Weber GmbH
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Kutzner and Weber GmbH
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Publication of EP1561996A1 publication Critical patent/EP1561996A1/en
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Publication of EP1561996B1 publication Critical patent/EP1561996B1/en
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Classifications

    • 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
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J11/00—Devices for conducting smoke or fumes, e.g. flues 
    • F23J11/12—Smoke conduit systems for factories or large buildings
    • 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
    • F23L11/00—Arrangements of valves or dampers after the fire
    • F23L11/005—Arrangements of valves or dampers after the fire for closing the flue during interruption of burner function

Definitions

  • the present invention relates to a shut-off device for a gas-conducting pipe, in particular for an exhaust pipe of a fireplace, comprising a housed in a pipe section of the pipe and about a pipe axis substantially orthogonal to the pipe axis axis between a shut-off and an open position pivotable shut-off valve made of sheet metal, in particular sheet metal which is at least approximately orthogonal to the pipe section axis in the shut-off position and sealingly cooperates at its peripheral seam with a surface region on the inner circumference of the pipe section.
  • shut-off device is from the DE 196 03 615 A1 known.
  • This shut-off device has a shut-off valve, which is arranged in an exhaust pipe, which connects a fireplace with a fireplace.
  • the butterfly valve is used to close and open the exhaust pipe.
  • it is coupled to a motor drive, by means of which it is pivotable between its shut-off position and its open position.
  • the butterfly valve should be in its open position so that the exhaust gases generated by the fireplace can be drawn off into the chimney. If the fireplace is not in operation, the shut-off damper should normally be closed, inter alia to prevent cooling of the room where the fireplace is installed.
  • shut-off valves can be prevented in the operation of several fireplaces on the same chimney that exhaust gases of a fireplace in operation may enter the room of an out of service fireplace.
  • a sealing profile on which the butterfly valve sealingly abuts in its shut-off position is fixed to the inner peripheral surface of the tube, a sealing profile on which the butterfly valve sealingly abuts in its shut-off position.
  • shut-off device is from the DE8523605U known.
  • This shut-off device relates to a closure tube for a chimney fresh air supply, in which a centrally stepped flap is rotatably mounted about a central axis in a pipe section and is fixedly connected to a protruding from the pipe section rod.
  • the pipe section forms inside a circular encircling ledge on which one half of the flap rests from one side and the other half of the flap from the other side.
  • the EP1462722A2 describes a draft regulator with a control flap as a pressure difference-dependent effective closure element of a secondary air inlet opening of an exhaust pipe.
  • the control flap is pivotably mounted on a frame surrounding the secondary air inlet opening between a closed position and occluding open position, so that it can change pressure-dependent in the closed or open position and can strike at the transition to the closed position with an edge overlap region on the peripheral edge of the secondary air inlet opening.
  • a flue gas flap assembly which has a movable against a conical sealing seat rotary flap wing, which is made of an elastic material outer edge seal in extension of the rotary valve wing between two attached, attached to the rotary valve flats and placed against the sealing seat.
  • An air intake pipe of a boiler plant is out of DE3617510A known, which has a stored throttle.
  • the throttle valve is pivotally mounted from a transversely extending to the suction line closed position in an open position and they know at its edge a relative to the air intake hermetically sealing, two-piece soft seal.
  • An object of the present invention is to provide a shut-off device of the type mentioned above with good sealing effect, which can be realized by simple means and works reliably and permanently.
  • the butterfly valve is prepared on its peripheral seam with an elastomeric sealing material fixed thereto and forming a seal arrangement.
  • the butterfly valve is perforated at its perennialsssaum with holes which are interspersed with sealing material.
  • the sealing material may in particular contain silicone, EPDM and / or PUDF and be applied by means of injection molding technology.
  • the shape of the seal assembly can be designed in a suitable and simple manner and adapted to the shape of the butterfly valve and the pipe section. For example, may be provided to increase the sealing effect sealing lips, which create in the shut-off position, in particular on a radially projecting from the inner circumference of the pipe section inwardly flange, which serves as an abutment for the shut-off valve. The shape of this flange must therefore not be subject to great precision.
  • the Fig. 1 shows an example of the use of the shut-off device according to the invention in the exhaust gas discharge system of a modern heating system.
  • Floor shelves 10a and 10b of a building are shown schematically.
  • a Abgasabfuelweg 12 passes through the floor floors 10a, 10b.
  • the Abgasab2020weg 12 is designed here as a classic fireplace.
  • In the individual floors of the building is connected to the fireplace 12 each have a fireplace 14, 16 and 18 respectively.
  • Each firebox 14, 16 and 18 may be associated with a respective fan (not shown) which expels the exhaust gases in the direction of the chimney 12.
  • the fireplaces 14, 16 and 18 can be identical. In the following, the connection of the fireplace 14 to the chimney 12 will be further described by way of example.
  • the fireplace 14 is connected via an exhaust pipe 20 to the chimney 12.
  • a shut-off valve 22 is provided, which is pivotable about an orthogonal to the exhaust pipe axis pivot axis between the flow cross-section of the tube 20 occlusive shut-off position and the flow path releasing open position.
  • a communication path for exhaust gases between the hearth 14 and the chimney 12 can thus be made or broken as needed.
  • a motor 26 is provided, which is externally mounted on the tube 20 and has a sealingly guided through the pipe wall motor shaft on which the butterfly valve is held. In the Fig. 1 the butterfly valve 22 is shown in its open position.
  • the Fig. 2 schematically shows a first embodiment of the shut-off device according to the invention in a longitudinal sectional view of the exhaust pipe 20.
  • the butterfly valve 22 is arranged in a pipe section 28.
  • the butterfly valve 22 is here in its shut-off position.
  • the pipe section 28 and the butterfly valve 22 are formed from a metal sheet, advantageously from a relatively thin stainless steel sheet.
  • a radially inwardly extending flange 29 which is formed by narrowing the diameter of the pipe section 28.
  • the constriction is a readily producible constriction of the tube.
  • the butterfly valve 22 is disc-shaped and bent at two folds 64 and 66. As a result, a first flap region 32 and a second flap region 34 are formed, which are parallel and, with reference to the axis of the tube section 28 in FIG Fig. 2 - axially offset from each other.
  • the butterfly valve 22 has between the two fold lines 64, 66 a slightly oblique flap area 62 which connects the two flap areas 32, 34 and bridges the axial displacement of the two flap areas 32, 34.
  • a short shaft extension 42 is attached to the butterfly valve 22, which projects beyond an opening from the pipe section 28 and the shaft of the motor 26 is associated.
  • the joint between the pipe section 28 and the shaft extension 42 in the region of this opening is sealed, so that no exhaust gases can escape.
  • the shaft extension 42 defines for the butterfly valve 22 the orthogonal to the pipe axis axis extending pivot axis about which the butterfly valve 22 can be pivoted by about 90 ° between the shut-off and the open position.
  • the two flap regions 32, 34 are each coated on the peripheral edge with an elastomeric sealing material 36 made of silicone, EPDM or PUDF.
  • This sealing material 36 is applied at the peripheral edge in each case on both flap surface sides of the flap regions 32, 34 and on the narrow side on the flap periphery, preferably in an injection molding process. Due to the bends of the butterfly valve 22 at the folds 64, 66, the sealing material 36 on the two flap areas 32, 34 touch the flange 29 in the shut-off position of the butterfly valve 22 from opposite axial sides.
  • the flange 29 serves as a seal counter stop for the sealing material 36 of the two flap areas 32, 34. The joints between the flange 29 and the sealing material 36 are well sealed with the shut-off valve 22 closed.
  • the Fig. 3 shows the shut-off device according to the first embodiment after Fig. 2 in its open position.
  • the shut-off valve 22 is pivoted together with the sealing material 36 with respect to the shut-off position by about 90 ° about the pivot axis. Exhaust gases can pass the shut-off device.
  • the shut-off device is shown with a plan view of the closed butterfly valve in the axial direction of the pipe section 28.
  • a holder 60 for the motor 26 and possibly a transmission is mounted on the pipe section 28.
  • the butterfly valve 22 is mounted on one side, by means of the shaft extension 42, at a first bearing point 68 on the pipe section 28 and at a second bearing point 70 on the holder 60.
  • Due to the staggered arrangement of the flap regions 32, 34, the sealing material 36 is partially covered by the flange 29 at the first flap region 32 located here below.
  • the edge of the sealing material 36 on the narrow side of the flap circumference on the flap region 32 is indicated as a semicircular arc.
  • the flange 29 in turn is partially hidden by the second flap region 34 located up here and the sealing material 36 applied to it.
  • the course of the concealed flange 29 on the upper inner peripheral surface of the pipe section 28 is indicated by a dashed semicircular arc.
  • the Fig. 5 schematically shows a second embodiment of the shut-off device according to the invention.
  • the butterfly valve 22 is in its shut-off position.
  • a cut pipe section 28 of the exhaust pipe 20 is shown in its axial flow direction from the hearth 14 to the chimney 12.
  • the butterfly valve 22 has a circular cross-section and a disc shape which is delimited by two opposite flap surface sides and a narrow side 50 extending perpendicular to the two flap surface sides on the flap periphery.
  • the butterfly valve 22 is orthogonal to the axis of the pipe section 28.
  • Die Fig. 2 shows the top view of a first flap surface side 52.
  • the dashed semicircle on the left side of the butterfly valve 22 indicates its edge at the transition of the first flap surface side 52 to the narrow side 50 at.
  • the butterfly valve 22 has a shaft 40 extending orthogonally to the pipe section axis, which defines a pivot axis 38.
  • the shaft 40 divides the butterfly valve 22 into the first flap region 32 and the second flap region 34 and is mounted at its two ends in the tube section 28.
  • the shaft extension 42 is mounted, which protrudes through an opening from the pipe section 28 and opens into the adjustment means 26.
  • the joint between the pipe section 28 and the shaft extension 42 in the region of this opening is sealed, so that no exhaust gases can escape.
  • the adjusting means 26 serves for pivoting the butterfly valve 22 about the pivot axis 38.
  • the butterfly valve 22 is provided with elastomeric sealing material 36 at its peripheral edge.
  • the sealing material covers on the flap circumference the narrow side 50 and in each case a narrow strip of the edge regions of the two flap surface sides 52, 54 and is fastened to the peripheral seam.
  • the pipe section 28 has an inner circumferential surface 56, on which a first inwardly extending first flange portion 30 and second flange portion 31 (FIGS. Fig. 6 ) are formed.
  • the flange portions 30, 31 may be formed for example by local narrowing of the diameter of the pipe section or by a Flanscheinsatz of metal or possibly of elastomeric sealing material.
  • the butterfly valve 22 may fit snugly against the two flange portions 30, 31, these may be offset by the width of the butterfly valve 22 and the width of the attached to the flap surface sides 52, 54 sealing material 36 axially against each other.
  • the sealing material 36 is sufficient in the present Embodiment on the flap surface sides 52, 54 radially further inward than the two flange portions 30, 31.
  • Fig. 6 is the cut pipe section 28 of the exhaust pipe 20 as viewed in the axial direction of the chimney 12 to the fireplace 14 shown.
  • the butterfly valve 22 is in its shut-off position.
  • the Fig. 6 shows the top view of the second flap surface side 54.
  • the dashed semicircle on the left side of the butterfly valve 22 indicates its edge at the transition of the second flap surface side 54 to the narrow side 50 at the flap circumference.
  • On the right side of the second flange portion 31 is shown.
  • the Fig. 7 shows the shut-off device according to the second embodiment in its open position.
  • the butterfly valve 22 is opposite to its position according to the Fig. 5 swiveled by 90 °.
  • the exhaust gases generated by the in-service fireplace 14 can be drawn off into the chimney 12 through the pipe.
  • the narrow side 50 on the flap circumference covered by the sealing material 36 and the edges of the transitions to the flap surface sides 52, 54 are indicated by dashed lines.
  • the Fig. 8 shows the top view of the first flap surface side 52 of the butterfly valve 22 without applied sealing material 36.
  • the butterfly valve 22 holes 44 are introduced into the sheet material, which serve to anchor the sealing material 36.
  • the advantageously injection-molded sealing material 36 in particular passes completely through these holes 44 and advantageously hangs together integrally with the sealing material 36 applied to the peripheral seam of the flap surface sides 52, 54. As a result, a secure attachment of the sealing material 36 can be achieved.
  • the sealing material 36 additionally has a first sealing lip 46 and a second sealing lip 48, which has an additional sealing effect guarantee.
  • the first sealing lip 46 extends on the second flap region 34, starting from the sealing material 36 in the edge region of the transition from the narrow side 50 at the flap periphery to the flap surface side 54 obliquely to the present on the flap surface side 54 sealing material 36.
  • the second sealing lip 48 extends on the first flap area 32, starting from the sealing material 36 in the edge region of the transition from the narrow side 50 on the flap circumference to the flap surface side 52 obliquely to the present on the flap surface side 52 sealing material 36.
  • the sealing lips 46, 48 In the shut-off position of the butterfly valve 22 are the sealing lips 46, 48 with opposite axial sides of the flange 30, 31 in touch.
  • the first sealing lip 46 touches the side of the flange region 31 pointing in the direction of the hearth 14 and the second sealing lip 48 contacts the side of the flange region 30 pointing in the direction of the chimney 12.
  • the illustrated dimensions of the shut-off flap 22 are not to scale.
  • the lips 46, 48 may be realized in various alternative forms and configurations.
  • FIG. 2 to 4 illustrated embodiment may integrally molded from the elastomeric sealing material 36 formed sealing lips.
  • a shut-off device according to the invention is not limited to use in exhaust systems. It can e.g. Alternatively, find in a ventilation system or a venting system and the like. Use.

Description

Die vorliegende Erfindung betrifft eine Absperrvorrichtung für ein Gas führendes Rohr, insbesondere für ein Abgasrohr einer Feuerstätte, umfassend eine in einem Rohrabschnitt des Rohres untergebrachte und um eine zur Rohrabschnittsachse im Wesentlichen orthogonale Schwenkachse zwischen einer Absperrstellung und einer Öffnungsstellung schwenkbare Absperrklappe aus einem Blech, insbesondere Metallblech, welche in der Absperrstellung zumindest näherungsweise orthogonal zur Rohrabschnittsachse liegt und an ihrem Umfangssaum mit einem Flächenbereich am Innenumfang des Rohrabschnittes dichtend zusammenwirkt.The present invention relates to a shut-off device for a gas-conducting pipe, in particular for an exhaust pipe of a fireplace, comprising a housed in a pipe section of the pipe and about a pipe axis substantially orthogonal to the pipe axis axis between a shut-off and an open position pivotable shut-off valve made of sheet metal, in particular sheet metal which is at least approximately orthogonal to the pipe section axis in the shut-off position and sealingly cooperates at its peripheral seam with a surface region on the inner circumference of the pipe section.

Eine solche Absperrvorrichtung ist aus der DE 196 03 615 A1 bekannt. Diese Absperrvorrichtung weist eine Absperrklappe auf, die in einem Abgasrohr angeordnet ist, das eine Feuerstätte mit einem Kamin verbindet. Die Absperrklappe dient zum Verschließen und Öffnen des Abgasrohres. Dazu ist sie mit einem motorischen Antrieb gekoppelt, mittels dessen sie zwischen ihrer Absperrstellung und ihrer Öffnungsstellung verschwenkbar ist. Während des Betriebs der Feuerstätte soll die Absperrklappe in ihrer Öffnungsstellung sein, damit die von der Feuerstätte erzeugten Abgase in den Kamin abziehen können. Ist die Feuerstätte nicht in Betrieb, soll die Absperrklappe normalerweise geschlossen sein, u. a. damit eine Auskühlung des Raumes, in dem die Feuerstätte aufgestellt ist, verhindert wird. Des Weiteren kann mittels solcher Absperrklappen bei Betrieb von mehreren Feuerstätten an dem gleichen Kamin verhindert werden, dass Abgase einer in Betrieb befindlichen Feuerstätte unter Umständen in den Raum einer außer Betrieb befindlichen Feuerstätte gelangen. Im Falle der Absperrvorrichtung nach der DE 196 03 615 A1 ist an der Innenumfangsfläche des Rohres ein Dichtungsprofil fixiert, an dem die Absperrklappe in ihrer Absperrstellung dichtend anliegt.Such a shut-off device is from the DE 196 03 615 A1 known. This shut-off device has a shut-off valve, which is arranged in an exhaust pipe, which connects a fireplace with a fireplace. The butterfly valve is used to close and open the exhaust pipe. For this purpose, it is coupled to a motor drive, by means of which it is pivotable between its shut-off position and its open position. During operation of the fireplace, the butterfly valve should be in its open position so that the exhaust gases generated by the fireplace can be drawn off into the chimney. If the fireplace is not in operation, the shut-off damper should normally be closed, inter alia to prevent cooling of the room where the fireplace is installed. Furthermore, by means of such shut-off valves can be prevented in the operation of several fireplaces on the same chimney that exhaust gases of a fireplace in operation may enter the room of an out of service fireplace. In the case of the shut-off device after the DE 196 03 615 A1 is fixed to the inner peripheral surface of the tube, a sealing profile on which the butterfly valve sealingly abuts in its shut-off position.

Eine weitere Absperrvorrichtung ist aus der DE8523605U bekannt. Diese Absperrvorrichtung betrifft ein Verschlussrohr für eine Kamin-Frischluftzufuhr, bei dem in einem Rohrstück eine mittig abgestufte Klappe um eine mittige Achse drehbar gelagert ist und mit einer aus dem Rohrstück herausragenden Stange fest verbunden ist. Das Rohrstück bildet innen einen kreisförmig umlaufenden Sims, an dem die eine Hälfte der Klappe von der einen Seite und die andere Hälfte der Klappe von der anderen Seite anliegt.Another shut-off device is from the DE8523605U known. This shut-off device relates to a closure tube for a chimney fresh air supply, in which a centrally stepped flap is rotatably mounted about a central axis in a pipe section and is fixedly connected to a protruding from the pipe section rod. The pipe section forms inside a circular encircling ledge on which one half of the flap rests from one side and the other half of the flap from the other side.

Die EP1462722A2 beschreibt einen Zugregler mit einer Regelklappe als druckdifferenzabhängig wirksames Verschlusselement einer Nebenlufteinlassöffnung einer Abgasleitung. Die Regelklappe ist an einem die Nebenlufteinlassöffnung umgebenden Rahmen zwischen einer Schließstellung und verschließenden Öffnungsstellung schwenkbeweglich gelagert, so dass sie druckdifferenzabhängig in die Schließ- oder Öffnungsstellung ändern kann und beim Übergang in die Schließstellung mit einem Randüberlappungsbereich an dem Umfangsrand der Nebenlufteinlassöffnung anschlagen kann.The EP1462722A2 describes a draft regulator with a control flap as a pressure difference-dependent effective closure element of a secondary air inlet opening of an exhaust pipe. The control flap is pivotably mounted on a frame surrounding the secondary air inlet opening between a closed position and occluding open position, so that it can change pressure-dependent in the closed or open position and can strike at the transition to the closed position with an edge overlap region on the peripheral edge of the secondary air inlet opening.

Aus der DE4015584A1 ist eine Rauchgasklappenanordnung bekannt, die einen gegen einen konischen Dichtsitz bewegbaren Drehklappenflügel aufweist, dessen aus einem elastischen Material bestehende Außenranddichtung in Verlängerung des Drehklappenflügels zwischen zwei aufgesetzten, am Drehklappenflügel befestigten Flacheisen gehalten und gegen den Dichtsitz legbar ist.From the DE4015584A1 a flue gas flap assembly is known which has a movable against a conical sealing seat rotary flap wing, which is made of an elastic material outer edge seal in extension of the rotary valve wing between two attached, attached to the rotary valve flats and placed against the sealing seat.

Eine Luft-Ansaugleitung einer Kesselanlage ist aus der DE3617510A bekannt, die eine gelagerte Drosselklappe aufweist. Die Drosselklappe ist aus einer quer zur Ansaugleitung verlaufenden Schließstellung in eine Öffnungsstellung gelagert schwenkbar und sie weißt an ihrem Rand eine relativ zur Luft-Ansaugleitung luftdicht abdichtende, zweiteilige Weichdichtung auf.An air intake pipe of a boiler plant is out of DE3617510A known, which has a stored throttle. The throttle valve is pivotally mounted from a transversely extending to the suction line closed position in an open position and they know at its edge a relative to the air intake hermetically sealing, two-piece soft seal.

Eine Aufgabe der vorliegenden Erfindung liegt darin, eine Absperrvorrichtung der eingangs genannten Art mit guter Abdichtwirkung anzugeben, die mit einfachen Mitteln realisierbar ist und zuverlässig und dauerhaft funktioniert.An object of the present invention is to provide a shut-off device of the type mentioned above with good sealing effect, which can be realized by simple means and works reliably and permanently.

Diese Aufgabe wird gemäß der technischen Lehre des Anspruchs 1 gelöst.This object is achieved according to the technical teaching of claim 1.

Erfindungsgemäß ist die Absperrklappe an ihrem Umfangssaum mit einem daran fixierten und eine Dichtungsanordnung bildenden elastomeren Dichtungsmaterial präpariert. Dadurch können Dichtungsprobleme, die sich bei bisherigen Absperrvorrichtungen einfacher Bauart auf Grund von Maßtoleranzen und Exemplarstreuungen der verschiedenen Absperrklappenbleche und Rohrabschnitte gezeigt haben, unter Verzicht auf die Montage und Fixierung von Dichtungsprofilringen in dem Rohr behoben werden. Die hohe Dichtungswirkung kann einfach und preiswert erzielt werden. Die Absperrklappe verursacht wegen des elastomeren Dichtungsmaterials beim Schließen keine störenden Geräusche.According to the invention, the butterfly valve is prepared on its peripheral seam with an elastomeric sealing material fixed thereto and forming a seal arrangement. As a result, sealing problems that have been shown in previous shut-off devices of simple design due to dimensional tolerances and Exemplarstreuungen the various butterfly valves and pipe sections, waiving the installation and fixation of sealing profile rings in the pipe can be solved. The high sealing effect can be achieved easily and inexpensively. The butterfly valve causes no disturbing noises when closing because of the elastomeric sealing material.

Erfindungsgemäß ist die Absperrklappe an ihrem Umfangssaum mit Löchern perforiert, die mit Dichtungsmaterial durchsetzt sind. Dadurch lässt sich das Dichtungsmaterial auf einfache Weise verrutschfest an dem Blech befestigen. Das Dichtungsmaterial kann insbesondere Silikon, EPDM und/oder PUDF enthalten und mittels Spritzgusstechnik aufgebracht sein. Außerdem kann die Form der Dichtungsanordnung in geeigneter und einfacher Weise ausgestaltet und an die Form der Absperrklappe und des Rohrabschnittes angepasst werden. Beispielsweise können zur Erhöhung der Dichtungswirkung Dichtlippen vorgesehen sein, die sich in der Absperrstellung insbesondere an einen vom Innenumfang des Rohrabschnittes radial nach innen abstehenden Flansch anlegen, der als Gegenlager für die Absperrklappe dient. Die Ausformung dieses Flansches muss somit keiner großen Präzision unterliegen.According to the invention the butterfly valve is perforated at its Umfangsssaum with holes which are interspersed with sealing material. As a result, the sealing material can be secured against slipping on the sheet metal in a simple manner. The sealing material may in particular contain silicone, EPDM and / or PUDF and be applied by means of injection molding technology. In addition, the shape of the seal assembly can be designed in a suitable and simple manner and adapted to the shape of the butterfly valve and the pipe section. For example, may be provided to increase the sealing effect sealing lips, which create in the shut-off position, in particular on a radially projecting from the inner circumference of the pipe section inwardly flange, which serves as an abutment for the shut-off valve. The shape of this flange must therefore not be subject to great precision.

Weitere vorteilhafte Ausgestaltungen der Erfindung können den abhängigen Ansprüchen entnommen werden.Further advantageous embodiments of the invention can be taken from the dependent claims.

Im Folgenden werden die Erfindung und ihre Vorteile an Hand von Beispielen unter Bezugnahme auf die Zeichnungen beschrieben. Es zeigen:

Fig. 1
eine Skizze zur Erläuterung eines Anwendungsbeispiels erfindungsgemäßer Absperrvorrichtungen in einem mehrstöckigen Gebäude mit separaten Feuerstätten in den Stockwerken,
Fig. 2
eine schematische Darstellung eines ersten Ausführungsbeispiels der Absperrvorrichtung mit einer geschlossenen, in einem Rohrabschnitt angeordneten Absperrklappe in einer Schnittdarstellung mit der in Fig. 4 bei II-II angedeuteten Schnittebene,
Fig. 3
die Absperrvorrichtung gemäß der Fig. 2 in ihrer geöffneten Stellung in einer entsprechenden Schnittdarstellung,
Fig. 4
eine schematische Darstellung des Ausführungsbeispiels der Absperrvorrichtung betrachtet in axialer Richtung des Rohrabschnittes,
Fig. 5
eine schematische Darstellung eines zweiten Ausführungsbeispiels der Absperrvorrichtung mit einer geschlossenen, in einem Rohrabschnitt angeordneten Absperrklappe betrachtet in axialer Richtung des Rohrabschnittes,
Fig. 6
die Absperrvorrichtung gemäß Fig. 5 betrachtet in entgegengesetzter axialer Richtung des Rohrabschnittes,
Fig. 7
die Absperrvorrichtung gemäß Fig. 5 in ihrer geöffneten Stellung,
Fig. 8
die Absperrklappe mit Verankerungslöchern und
Fig. 9
eine Darstellung eines Ausführungsbeispiels einer Absperrklappe nach der Erfindung mit Dichtlippen.
In the following, the invention and its advantages will be described by way of example with reference to the drawings. Show it:
Fig. 1
a sketch for explaining an application example of inventive shut-off devices in a multi-storey building with separate fireplaces in the floors,
Fig. 2
a schematic representation of a first embodiment of the shut-off device with a closed, arranged in a pipe section shut-off valve in a sectional view with the in Fig. 4 in II-II indicated cutting plane,
Fig. 3
the shut-off according to the Fig. 2 in its open position in a corresponding sectional view,
Fig. 4
a schematic representation of the embodiment of the shut-off considered in the axial direction of the pipe section,
Fig. 5
a schematic representation of a second embodiment of the shut-off device with a closed, arranged in a pipe section shut-off valve viewed in the axial direction of the pipe section,
Fig. 6
the shut-off device according to Fig. 5 considered in the opposite axial direction of the pipe section,
Fig. 7
the shut-off device according to Fig. 5 in their open position,
Fig. 8
the butterfly valve with anchoring holes and
Fig. 9
a representation of an embodiment of a butterfly valve according to the invention with sealing lips.

Die Fig. 1 zeigt ein Beispiel für den Einsatz der erfindungsgemäßen Absperrvorrichtung im Abgasableitungssystem einer modernen Heizungsanlage. In der Fig. 1 sind Stockwerks-Zwischenböden 10a und 10b eines Gebäudes schematisch dargestellt. Ein Abgasabführweg 12 durchsetzt die Stockwerksböden 10a, 10b. Der Abgasabführweg 12 ist hier als klassischer Kamin ausgebildet. In den einzelnen Etagen des Gebäudes ist an den Kamin 12 je eine Feuerstätte 14, 16 bzw. 18 angeschlossen. Jeder Feuerstätte 14, 16 und 18 kann ein jeweiliges Gebläse (nicht gezeigt) zugeordnet sein, welches die Abgase in Richtung Kamin 12 austreibt. Auf eine detaillierte Beschreibung der Feuerstätten wird an dieser Stelle verzichtet. Die Feuerstätten 14, 16 und 18 können identisch sein. Im Folgenden wird beispielhaft der Anschluss der Feuerstätte 14 an den Kamin 12 weiter beschrieben.The Fig. 1 shows an example of the use of the shut-off device according to the invention in the exhaust gas discharge system of a modern heating system. In the Fig. 1 Floor shelves 10a and 10b of a building are shown schematically. A Abgasabführweg 12 passes through the floor floors 10a, 10b. The Abgasabführweg 12 is designed here as a classic fireplace. In the individual floors of the building is connected to the fireplace 12 each have a fireplace 14, 16 and 18 respectively. Each firebox 14, 16 and 18 may be associated with a respective fan (not shown) which expels the exhaust gases in the direction of the chimney 12. On a detailed description of the fireplaces is omitted here. The fireplaces 14, 16 and 18 can be identical. In the following, the connection of the fireplace 14 to the chimney 12 will be further described by way of example.

Die Feuerstätte 14 ist über ein Abgasrohr 20 an den Kamin 12 angeschlossen. In diesem Abgasrohr 20 ist eine Absperrklappe 22 vorgesehen, welche um eine zur Abgasrohrachse orthogonale Schwenkachse zwischen einer den Strömungsquerschnitt des Rohres 20 verschließenden Absperrstellung und einer den Strömungsweg freigebenden Öffnungsstellung schwenkbar ist. Ein Verbindungsweg für Abgase zwischen der Feuerstätte 14 und dem Kamin 12 kann somit je nach Bedarf hergestellt oder unterbrochen werden. Als Schwenkantrieb der Absperrklappe 22 ist ein Motor 26 vorgesehen, der außen am Rohr 20 gelagert ist und eine abdichtend durch die Rohrwand geführte Motorwelle hat, an der die Absperrklappe gehalten ist. In der Fig. 1 ist die Absperrklappe 22 in ihrer geöffneten Stellung dargestellt.The fireplace 14 is connected via an exhaust pipe 20 to the chimney 12. In this exhaust pipe 20, a shut-off valve 22 is provided, which is pivotable about an orthogonal to the exhaust pipe axis pivot axis between the flow cross-section of the tube 20 occlusive shut-off position and the flow path releasing open position. A communication path for exhaust gases between the hearth 14 and the chimney 12 can thus be made or broken as needed. As a rotary drive of the butterfly valve 22, a motor 26 is provided, which is externally mounted on the tube 20 and has a sealingly guided through the pipe wall motor shaft on which the butterfly valve is held. In the Fig. 1 the butterfly valve 22 is shown in its open position.

Die Fig. 2 zeigt schematisch ein erstes Ausführungsbeispiel der erfindungsgemäßen Absperrvorrichtung in einer Längsschnittdarstellung des Abgasrohres 20. In einem Rohrabschnitt 28 ist die Absperrklappe 22 angeordnet. Die Absperrklappe 22 befindet sich hier in ihrer Absperrstellung. Der Rohrabschnitt 28 und die Absperrklappe 22 sind aus einem Metallblech gebildet, vorteilhafterweise aus einem relativ dünnen Edelstahl-Blech. In dem Rohrabschnitt 28 liegt in einer Querschnittsebene ein sich radial nach innen erstreckender Flansch 29, der durch Verengung des Durchmessers des Rohrabschnittes 28 gebildet ist. Die Verengung stellt eine auf einfache Weise herstellbare Einschnürung des Rohres dar.The Fig. 2 schematically shows a first embodiment of the shut-off device according to the invention in a longitudinal sectional view of the exhaust pipe 20. In a pipe section 28, the butterfly valve 22 is arranged. The butterfly valve 22 is here in its shut-off position. The pipe section 28 and the butterfly valve 22 are formed from a metal sheet, advantageously from a relatively thin stainless steel sheet. In the pipe section 28 is located in a cross-sectional plane, a radially inwardly extending flange 29, which is formed by narrowing the diameter of the pipe section 28. The constriction is a readily producible constriction of the tube.

Die Absperrklappe 22 ist scheibenförmig und an zwei Knickfalten 64 und 66 gebogen. Dadurch sind ein erster Klappenbereich 32 und ein zweiter Klappenbereich 34 ausgebildet, die parallel und - bezogen auf die Achse des Rohrabschnittes 28 in Fig. 2 - axial gegeneinander versetzt verlaufen. Die Absperrklappe 22 weist zwischen den beiden Knickfalten 64, 66 einen leicht schräg verlaufenden Klappenbereich 62 auf, der die beiden Klappenbereiche 32, 34 verbindet und die axiale Versetzung der beiden Klappenbereiche 32, 34 überbrückt. Im Bereich der Knickfalte 64 ist ein kurzer Wellenansatz 42 an der Absperrklappe 22 befestigt, der über eine Öffnung aus dem Rohrabschnitt 28 herausragt und der Welle des Motors 26 zugehörig ist. Die Verbindungsstelle zwischen dem Rohrabschnitt 28 und dem Wellenansatz 42 im Bereich dieser Öffnung ist abgedichtet, so dass keine Abgase austreten können. Der Wellenansatz 42 legt für die Absperrklappe 22 die orthogonal zur Rohrabschnittsachse verlaufende Schwenkachse fest, um die die Absperrklappe 22 um ca. 90° zwischen der Absperr- und der Öffnungsstellung verschwenkt werden kann.The butterfly valve 22 is disc-shaped and bent at two folds 64 and 66. As a result, a first flap region 32 and a second flap region 34 are formed, which are parallel and, with reference to the axis of the tube section 28 in FIG Fig. 2 - axially offset from each other. The butterfly valve 22 has between the two fold lines 64, 66 a slightly oblique flap area 62 which connects the two flap areas 32, 34 and bridges the axial displacement of the two flap areas 32, 34. In the region of the crease 64, a short shaft extension 42 is attached to the butterfly valve 22, which projects beyond an opening from the pipe section 28 and the shaft of the motor 26 is associated. The joint between the pipe section 28 and the shaft extension 42 in the region of this opening is sealed, so that no exhaust gases can escape. The shaft extension 42 defines for the butterfly valve 22 the orthogonal to the pipe axis axis extending pivot axis about which the butterfly valve 22 can be pivoted by about 90 ° between the shut-off and the open position.

Die beiden Klappenbereiche 32, 34 sind jeweils am Umfangsrand mit einem elastomeren Dichtungsmaterial 36 aus Silikon, EPDM oder PUDF überzogen. Dieses Dichtungsmaterial 36 ist am Umfangsrand jeweils auf beide Klappenflächenseiten der Klappenbereiche 32, 34 und auf die Schmalseite am Klappenumfang aufgebracht, vorzugsweise in einem Spritzgussverfahren. Auf Grund der Biegungen der Absperrklappe 22 an den Knickfalten 64, 66 kann das Dichtungsmaterial 36 auf den beiden Klappenbereichen 32, 34 den Flansch 29 in der Absperrstellung der Absperrklappe 22 von entgegengesetzten axialen Seiten berühren. Der Flansch 29 dient als Dichtungsgegenanschlag für das Dichtungsmaterial 36 der beiden Klappenbereiche 32, 34. Die Verbindungsstellen zwischen dem Flansch 29 und dem Dichtungsmaterial 36 sind bei geschlossener Absperrklappe 22 gut abgedichtet.The two flap regions 32, 34 are each coated on the peripheral edge with an elastomeric sealing material 36 made of silicone, EPDM or PUDF. This sealing material 36 is applied at the peripheral edge in each case on both flap surface sides of the flap regions 32, 34 and on the narrow side on the flap periphery, preferably in an injection molding process. Due to the bends of the butterfly valve 22 at the folds 64, 66, the sealing material 36 on the two flap areas 32, 34 touch the flange 29 in the shut-off position of the butterfly valve 22 from opposite axial sides. The flange 29 serves as a seal counter stop for the sealing material 36 of the two flap areas 32, 34. The joints between the flange 29 and the sealing material 36 are well sealed with the shut-off valve 22 closed.

Die Fig. 3 zeigt die Absperrvorrichtung gemäß dem ersten Ausführungsbeispiel nach Fig. 2 in ihrer Öffnungsstellung. Die Absperrklappe 22 ist mitsamt des Dichtungsmaterials 36 gegenüber der Absperrstellung um etwa 90° um die Schwenkachse verschwenkt. Abgase können die Absperrvorrichtung passieren.The Fig. 3 shows the shut-off device according to the first embodiment after Fig. 2 in its open position. The shut-off valve 22 is pivoted together with the sealing material 36 with respect to the shut-off position by about 90 ° about the pivot axis. Exhaust gases can pass the shut-off device.

In der Fig. 4 ist die Absperrvorrichtung mit Draufsicht auf die geschlossene Absperrklappe in axialer Richtung des Rohrabschnittes 28 gezeigt. An dem Rohrabschnitt 28 ist eine Halterung 60 für den Motor 26 und ggf. ein Getriebe angebracht. Die Absperrklappe 22 ist hier einseitig, mittels des Wellenansatzes 42, an einer ersten Lagerstelle 68 an dem Rohrabschnitt 28 und an einer zweiten Lagerstelle 70 an der Halterung 60 gelagert. Auf Grund der versetzten Anordnung der Klappenbereiche 32, 34 ist das Dichtungsmaterial 36 am hier unten befindlichen ersten Klappenbereich 32 teilweise durch den Flansch 29 verdeckt. Die Kante des Dichtungsmaterials 36 an der Schmalseite des Klappenumfangs am Klappenbereich 32 ist als Halbkreisbogen angedeutet. Der Flansch 29 wiederum ist teilweise durch den hier oben befindlichen zweiten Klappenbereich 34 und das auf ihm aufgebrachte Dichtungsmaterial 36 verdeckt. Der Verlauf des verdeckten Flansches 29 an der oberen Innenumfangsfläche des Rohrabschnittes 28 ist durch einen gestrichelten Halbkreisbogen angedeutet.In the Fig. 4 the shut-off device is shown with a plan view of the closed butterfly valve in the axial direction of the pipe section 28. On the pipe section 28, a holder 60 for the motor 26 and possibly a transmission is mounted. The butterfly valve 22 is mounted on one side, by means of the shaft extension 42, at a first bearing point 68 on the pipe section 28 and at a second bearing point 70 on the holder 60. Due to the staggered arrangement of the flap regions 32, 34, the sealing material 36 is partially covered by the flange 29 at the first flap region 32 located here below. The edge of the sealing material 36 on the narrow side of the flap circumference on the flap region 32 is indicated as a semicircular arc. The flange 29 in turn is partially hidden by the second flap region 34 located up here and the sealing material 36 applied to it. The course of the concealed flange 29 on the upper inner peripheral surface of the pipe section 28 is indicated by a dashed semicircular arc.

Die Fig. 5 zeigt schematisch ein zweites Ausführungsbeispiel der erfindungsgemäßen Absperrvorrichtung. Die Absperrklappe 22 befindet sich in ihrer Absperrstellung. Es ist ein geschnittener Rohrabschnitt 28 des Abgasrohres 20 in seiner axialen Flussrichtung von der Feuerstätte 14 zu dem Kamin 12 dargestellt. Die Absperrklappe 22 hat einen runden Querschnitt und eine Scheibenform, die durch zwei einander entgegengesetzte Klappenflächenseiten und eine sich am Klappenumfang senkrecht zu den beiden Klappenflächenseiten erstreckende Schmalseite 50 begrenzt ist. Die Absperrklappe 22 liegt orthogonal zur Achse des Rohrabschnittes 28. Die Fig. 2 zeigt die Draufsicht auf eine erste Klappenflächenseite 52. Der gestrichelte Halbkreisbogen auf der linken Seite der Absperrklappe 22 deutet ihren Rand am Übergang der ersten Klappenflächenseite 52 zu der Schmalseite 50 an.The Fig. 5 schematically shows a second embodiment of the shut-off device according to the invention. The butterfly valve 22 is in its shut-off position. A cut pipe section 28 of the exhaust pipe 20 is shown in its axial flow direction from the hearth 14 to the chimney 12. The butterfly valve 22 has a circular cross-section and a disc shape which is delimited by two opposite flap surface sides and a narrow side 50 extending perpendicular to the two flap surface sides on the flap periphery. The butterfly valve 22 is orthogonal to the axis of the pipe section 28. Die Fig. 2 shows the top view of a first flap surface side 52. The dashed semicircle on the left side of the butterfly valve 22 indicates its edge at the transition of the first flap surface side 52 to the narrow side 50 at.

Die Absperrklappe 22 hat eine orthogonal zur Rohrabschnittsachse verlaufende Welle 40, die eine Schwenkachse 38 festlegt. Die Welle 40 unterteilt die Absperrklappe 22 in den ersten Klappenbereich 32 und den zweiten Klappenbereich 34 und ist an ihren beiden Enden in dem Rohrabschnitt 28 gelagert. An der Welle 40 ist der Wellenansatz 42 angebracht, der über eine Öffnung aus dem Rohrabschnitt 28 herausragt und in das Verstellmittel 26 mündet. Die Verbindungsstelle zwischen dem Rohrabschnitt 28 und dem Wellenansatz 42 im Bereich dieser Öffnung ist abgedichtet, so dass keine Abgase austreten können. Das Verstellmittel 26 dient zum Verschwenken der Absperrklappe 22 um die Schwenkachse 38.The butterfly valve 22 has a shaft 40 extending orthogonally to the pipe section axis, which defines a pivot axis 38. The shaft 40 divides the butterfly valve 22 into the first flap region 32 and the second flap region 34 and is mounted at its two ends in the tube section 28. On the shaft 40, the shaft extension 42 is mounted, which protrudes through an opening from the pipe section 28 and opens into the adjustment means 26. The joint between the pipe section 28 and the shaft extension 42 in the region of this opening is sealed, so that no exhaust gases can escape. The adjusting means 26 serves for pivoting the butterfly valve 22 about the pivot axis 38.

Die Absperrklappe 22 ist an ihrem Umfangssaum mit elastomerem Dichtungsmaterial 36 versehen. Das Dichtungsmaterial überdeckt am Klappenumfang die Schmalseite 50 und jeweils einen schmalen Streifen der Randbereiche der beiden Klappenflächenseiten 52, 54 und ist an dem Umfangssaum befestigt.The butterfly valve 22 is provided with elastomeric sealing material 36 at its peripheral edge. The sealing material covers on the flap circumference the narrow side 50 and in each case a narrow strip of the edge regions of the two flap surface sides 52, 54 and is fastened to the peripheral seam.

Der Rohrabschnitt 28 hat eine Innenumfangsfläche 56, an der ein radial nach innen sich erstreckender erster Flanschbereich 30 und zweiter Flanschbereich 31 (Fig. 6) ausgebildet sind. Die Flanschbereiche 30, 31 können beispielsweise durch lokales Verengen des Durchmessers des Rohrabschnittes oder durch einen Flanscheinsatz aus Metall oder ggf. aus elastomerem Dichtungsmaterial ausgebildet sein. Damit die Absperrklappe 22 passend an den zwei Flanschbereichen 30, 31 anliegen kann, können diese um die Breite der Absperrklappe 22 und die Breite des an den Klappenflächenseiten 52, 54 angebrachten Dichtungsmaterials 36 axial gegeneinander versetzt sein. Das Dichtungsmaterial 36 reicht im vorliegenden Ausführungsbeispiel auf den Klappenflächenseiten 52, 54 radial weiter nach innen als die beiden Flanschbereiche 30, 31.The pipe section 28 has an inner circumferential surface 56, on which a first inwardly extending first flange portion 30 and second flange portion 31 (FIGS. Fig. 6 ) are formed. The flange portions 30, 31 may be formed for example by local narrowing of the diameter of the pipe section or by a Flanscheinsatz of metal or possibly of elastomeric sealing material. Thus, the butterfly valve 22 may fit snugly against the two flange portions 30, 31, these may be offset by the width of the butterfly valve 22 and the width of the attached to the flap surface sides 52, 54 sealing material 36 axially against each other. The sealing material 36 is sufficient in the present Embodiment on the flap surface sides 52, 54 radially further inward than the two flange portions 30, 31.

In der Fig. 6 ist der geschnittene Rohrabschnitt 28 des Abgasrohres 20 betrachtet in axialer Richtung von dem Kamin 12 zu der Feuerstätte 14 dargestellt. Die Absperrklappe 22 befindet sich in ihrer Absperrstellung. Die Fig. 6 zeigt die Draufsicht auf die zweite Klappenflächenseite 54. Der gestrichelte Halbkreisbogen auf der linken Seite der Absperrklappe 22 deutet ihren Rand am Übergang der zweiten Klappenflächenseite 54 zu der Schmalseite 50 am Klappenumfang an. Auf der rechten Seite ist der zweite Flanschbereich 31 dargestellt.In the Fig. 6 is the cut pipe section 28 of the exhaust pipe 20 as viewed in the axial direction of the chimney 12 to the fireplace 14 shown. The butterfly valve 22 is in its shut-off position. The Fig. 6 shows the top view of the second flap surface side 54. The dashed semicircle on the left side of the butterfly valve 22 indicates its edge at the transition of the second flap surface side 54 to the narrow side 50 at the flap circumference. On the right side of the second flange portion 31 is shown.

Die Fig. 7 zeigt die Absperrvorrichtung gemäß dem zweiten Ausführungsbeispiel in ihrer geöffneten Stellung. Die Absperrklappe 22 ist gegenüber ihrer Position gemäß der Fig. 5 um 90° verschwenkt. Die von der im Betrieb befindlichen Feuerstätte 14 erzeugten Abgase können durch das Rohr in den Kamin 12 abziehen. Die von dem Dichtungsmaterial 36 überzogene Schmalseite 50 am Klappenumfang und die Ränder der Übergänge zu den Klappenflächenseiten 52, 54 sind durch gestrichelte Linien angedeutet.The Fig. 7 shows the shut-off device according to the second embodiment in its open position. The butterfly valve 22 is opposite to its position according to the Fig. 5 swiveled by 90 °. The exhaust gases generated by the in-service fireplace 14 can be drawn off into the chimney 12 through the pipe. The narrow side 50 on the flap circumference covered by the sealing material 36 and the edges of the transitions to the flap surface sides 52, 54 are indicated by dashed lines.

Die Fig. 8 zeigt die Draufsicht auf die erste Klappenflächenseite 52 der Absperrklappe 22 ohne aufgebrachtes Dichtungsmaterial 36. An dem Umfangssaum der Absperrklappe 22 sind Löcher 44 in das Blechmaterial eingebracht, die zur Verankerung des Dichtungsmaterials 36 dienen. Das vorteilhafterweise im Spritzgussverfahren aufgetragene Dichtungsmaterial 36 durchsetzt diese Löcher 44 insbesondere vollständig und hängt vorteilhafterweise mit dem auf dem Umfangssaum der Klappenflächenseiten 52, 54 aufgetragenen Dichtungsmaterial 36 integral zusammen. Dadurch läßt sich eine sichere Befestigung des Dichtungsmaterials 36 erreichen.The Fig. 8 shows the top view of the first flap surface side 52 of the butterfly valve 22 without applied sealing material 36. At the Umfangsssaum the butterfly valve 22 holes 44 are introduced into the sheet material, which serve to anchor the sealing material 36. The advantageously injection-molded sealing material 36 in particular passes completely through these holes 44 and advantageously hangs together integrally with the sealing material 36 applied to the peripheral seam of the flap surface sides 52, 54. As a result, a secure attachment of the sealing material 36 can be achieved.

In der Fig. 9 ist ein Schnitt einer bevorzugten Variante der Absperrklappe 22 dargestellt. Das Dichtungsmaterial 36 hat hier zusätzlich eine erste Dichtlippe 46 und eine zweite Dichtlippe 48, die eine zusätzliche Dichtungswirkung gewährleisten. Die erste Dichtlippe 46 erstreckt sich auf dem zweiten Klappenbereich 34, ausgehend vom Dichtungsmaterial 36 im Randbereich des Übergangs von der Schmalseite 50 am Klappenumfang zu der Klappenflächenseite 54 schräg zum auf der Klappenflächenseite 54 vorhandenen Dichtungsmaterial 36. Die zweite Dichtlippe 48 erstreckt sich auf dem ersten Klappenbereich 32, ausgehend vom Dichtungsmaterial 36 im Randbereich des Übergangs von der Schmalseite 50 am Klappenumfang zu der Klappenflächenseite 52 schräg zum auf der Klappenflächenseite 52 vorhandenen Dichtungsmaterial 36. In der Absperrstellung der Absperrklappe 22 stehen die Dichtlippen 46, 48 mit entgegengesetzten axialen Seiten der Flanschbereiche 30, 31 in Berührung. Die erste Dichtlippe 46 berührt die in Richtung der Feuerstätte 14 weisende Seite des Flanschbereichs 31 und die zweite Dichtlippe 48 berührt die in Richtung des Kamins 12 weisende Seite des Flanschbereichs 30. Die dargestellten Dimensionen der Absperrklappe 22 sind nicht maßstäblich. Insbesondere können die Lippen 46, 48 in diversen alternativen Formen und Ausgestaltungen realisiert sein.In the Fig. 9 a section of a preferred variant of the butterfly valve 22 is shown. The sealing material 36 additionally has a first sealing lip 46 and a second sealing lip 48, which has an additional sealing effect guarantee. The first sealing lip 46 extends on the second flap region 34, starting from the sealing material 36 in the edge region of the transition from the narrow side 50 at the flap periphery to the flap surface side 54 obliquely to the present on the flap surface side 54 sealing material 36. The second sealing lip 48 extends on the first flap area 32, starting from the sealing material 36 in the edge region of the transition from the narrow side 50 on the flap circumference to the flap surface side 52 obliquely to the present on the flap surface side 52 sealing material 36. In the shut-off position of the butterfly valve 22 are the sealing lips 46, 48 with opposite axial sides of the flange 30, 31 in touch. The first sealing lip 46 touches the side of the flange region 31 pointing in the direction of the hearth 14 and the second sealing lip 48 contacts the side of the flange region 30 pointing in the direction of the chimney 12. The illustrated dimensions of the shut-off flap 22 are not to scale. In particular, the lips 46, 48 may be realized in various alternative forms and configurations.

Auch das in den Fig. 2 bis 4 dargestellte Ausführungsbeispiel kann integral aus dem elastomeren Dichtungsmaterial 36 geformte Dichtlippen aufweisen.Also in the Fig. 2 to 4 illustrated embodiment may integrally molded from the elastomeric sealing material 36 formed sealing lips.

Eine Absperrvorrichtung nach der Erfindung ist nicht auf die Verwendung in Abgasanlagen beschränkt. Sie kann z.B. alternativ in einer Belüftungsanlage oder einer Entlüftungsanlage und dgl. Verwendung finden.A shut-off device according to the invention is not limited to use in exhaust systems. It can e.g. Alternatively, find in a ventilation system or a venting system and the like. Use.

Claims (6)

  1. A shut-off device for a gas-conveying pipe, in particular for a flue gas pipe (20) of a furnace (14), comprising a shut-off flap (22) which is accommodated in a tubular section (28) of the pipe and which can pivot about a pivot axis (38), which is substantially orthogonal to the tubular section axis, between a shut-off position and an open position, which shut-off flap comprises a plate, in particular a metal plate, which in the shut-off position is situated at least approximately orthogonal to the tubular section axis and on its circumferential border co-operates fluidtightly with a surface region on the inner circumference (56) of the tubular section (28), wherein the shut-off flap (22) is provided on its circumferential border with a elastomeric sealing material (36) fixed thereon and forming a sealing assembly, characterised in that the plate material of the shut-off flap (22) is perforated on its circumferential border with anchoring holes (44) for the elastomeric sealing material (36), wherein the perforations are penetrated fluidtightly by the elastomeric sealing material (36) preferably applied using an injection-moulding process.
  2. A shut-off device according to Claim 1, characterised in that the sealing material (36) on the flap circumference (36) extends over the narrow side (50) of the shut-off flap (22) away from a flap surface side (52) towards the other flap surface side (54).
  3. A shut-off device according to Claim 1 or 2, characterised in that the sealing material (36) present at least in one zone of the circumferential border of the shut-off flap (22) on the mutually opposite flap surface sides (52,54) is integrally coherent with the sealing material (36) penetrating the respective anchoring holes (44).
  4. A shut-off device according to any one of the preceding Claims, characterised in that the sealing assembly has at least one sealing lip (46,48) which in the shut-off position of the shut-off flap (22) acts on the surface region on the inner circumference (56) of the tubular section (28).
  5. A shut-off device according to any one of the preceding Claims, characterised in that the tubular section (28) has on its inner circumference (56) a radially inward projecting flange (29,30,31), in particular formed by a local reduction in the diameter of the tubular section (28), with which the sealing assembly is fluidtight contact in the shut-off position of the shut-off flap (22).
  6. A shut-off device according to Claim 5, characterised in that the pivot axis (38) of the shut-off flap (22) and the flange (29,30,31) extends at least approximately orthogonal to the axis of the tubular section (28), and the pivot axis (38) divides the shut-off flap (22) into two flap zones (32,34), each of which has a sealing lip (46,48) of the sealing assembly and which in the shut-off position of the shut-off flap (22) are in contact by means of the respective sealing lip (46,48) with opposite axial sides of the flange (29,30,31).
EP20040026555 2004-02-09 2004-11-09 Shut-Off Device for a Gas Conveying Tube Active EP1561996B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200420001919 DE202004001919U1 (en) 2004-02-09 2004-02-09 Shut-off device for a gas pipe
DE202004001919U 2004-02-09

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EP1561996A1 EP1561996A1 (en) 2005-08-10
EP1561996B1 true EP1561996B1 (en) 2012-10-03

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062813B4 (en) * 2007-12-21 2009-11-12 Khs Ag Partition, in particular for housing packaging machines for food
DE102011083127A1 (en) 2011-09-21 2013-03-21 Kutzner + Weber Gmbh Shut-off device for pipe i.e. exhaust gas pipe, of heat-producing appliance i.e. oven, has fastening clamp for supporting bearings and for outwardly enclosing more than half of circumference of pipe when device is mounted at pipe
KR102148410B1 (en) * 2018-07-06 2020-08-26 포레시아코리아 유한회사 Valve assembly for vehicle exhaust system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8523605U1 (en) 1985-08-16 1985-10-24 Max Blank GmbH, 8821 Westheim Closure tube for a chimney fresh air supply
DE3617510A1 (en) 1985-10-19 1987-04-23 Horst Linz Boiler installation with an air throttle flap
DE4015584A1 (en) 1990-05-15 1991-11-21 Stober & Morlock Flue gas valve arrangement - has rotary valve vane moving against conical sealing seat and having outer edge elastic seal
DE19603615A1 (en) * 1996-02-01 1997-08-07 Kutzner & Weber Gmbh Waste gas removal system for hearths in building
DE19918128A1 (en) * 1999-04-21 2000-10-26 Dieter Moellmann Shut-off valve for pressurized containers or pipe lines has valve plate which closes automatically in both directions of flow
DE10102398A1 (en) * 2001-01-19 2002-07-25 Zimmer Ag Closure body for fluid-conveying pipe has flap closure piece, annular cooling chamber with outer and inner walls.
DE10132194C1 (en) * 2001-07-03 2002-07-25 Warex Valve Gmbh Shut-off device in pipe incorporates flap disc coupled with drive shaft n housing, sealing ring, base plate, spring element and counter sealing surface.
DE20304825U1 (en) 2003-03-25 2004-08-05 Kutzner + Weber Gmbh & Co. Kg Tension Controller

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DE202004001919U1 (en) 2005-06-23

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