EP1230953B1 - Damper, in particular fire damper - Google Patents

Damper, in particular fire damper Download PDF

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Publication number
EP1230953B1
EP1230953B1 EP02001465A EP02001465A EP1230953B1 EP 1230953 B1 EP1230953 B1 EP 1230953B1 EP 02001465 A EP02001465 A EP 02001465A EP 02001465 A EP02001465 A EP 02001465A EP 1230953 B1 EP1230953 B1 EP 1230953B1
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EP
European Patent Office
Prior art keywords
seal
shut
housing
disc
pipe section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02001465A
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German (de)
French (fr)
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EP1230953A1 (en
Inventor
Heinrich Dipl.-Ing. Dammers
Udo Bunge
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Gebrueder Trox GmbH
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Gebrueder Trox GmbH
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Publication of EP1230953A1 publication Critical patent/EP1230953A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1406—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by sealing means
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages

Definitions

  • the invention relates to a flap, in particular fire damper, with a Absperrlamelle which is pivotally mounted in a housing or a pipe section and whose edges in the closed position on a housing inside or pipe inside seal arranged from a cavities sealing material, in particular foam, rest, the seal under the action of the Absperrlamelle pivoting actuating forces is deformable.
  • the fire dampers are equipped with a circumferential stop seal for the shut-off blade.
  • the Absperrlamelle is rotatably mounted on a centrally arranged in the housing or the pipe section pivot shaft, the Absperrlamelle is divided into two sections of the pivot shaft. In each case, a seal along the edge of a portion of the Absperrlamelle provided, wherein both seals offset from each other and seen in the flow direction are arranged on each side of the pivot shaft. In the closed position, the shut-off blade lies with the one partial area on one side and with the other partial area on the other side of the respective gasket.
  • a fire damper which has a butterfly valve, the edges of which rest in the closed position on stops in the form of seals made of a foam.
  • two semi-circumferential sealing frame are provided which comprise strips of elastic, refractory mineral wool.
  • the seals consist of a closed-cell foam.
  • the closed cavities of the foam ensures that the flowing medium does not flow through the seal in the closed position. Due to the closed-cell design, the seal has on the one hand a relatively hard and difficult to deform basic structure. On the other hand, but the seal must also have a sufficiently high elasticity to material-related unevenness of Absperrlamelle such. As with Isolierstofflajellen on calcium silicate, or compensate for manufacturing tolerances of the housing so that the Absperrlamelle in the closed position, where it is possibly locked by a mechanical lock, meets the requirements for smoke-tightness. Due to the use of closed-cell foams, however, the elasticity is limited, as reflected in the cavities of the foam air is compressed during deformation.
  • shut-off blade in the closed position can not always optimally create on Absperrlamelle so that leaks can occur.
  • the object of the invention is therefore to provide a flap whose seal reliably seals with relatively low closing moments.
  • the sealing material in particular the foam
  • the sealing material is formed as an outlet possibility for a medium in the cavities at least in the area facing the Absperrlamelle at least partially open-celled to form openings and that the seal at least partially such a flexible and gas-impermeable Coating, in particular a lamination, has, in the closed position of the shut-off blade, the circumferential gap between housing or pipe section on the one hand and shut-off blade on the other hand is closed flow-interrupting.
  • the open-cell cavities of the sealing material at least in the region of the area facing the shut-off blade, when the seal is deformed, which is caused by the closing moment of the shut-off valve, the medium located in the cavities of the seal is readily pushed out of the openings via the openings, so that the seal has a high elasticity and easily and optimally adapts to the surface of Absperrlamelle.
  • the flexible and gas-impermeable coating is provided on the sealing material, so that the medium flowing in the housing or the pipe section can not pass the gap running around the shut-off disk.
  • At least the side of the seal facing the shut-off blade may have the coating. In the closed position, the side thus provided with the coating on the Absperrlamelle, so that the housing or the pipe section can be closed flow interruption.
  • At least the exposed areas may have the coating facing away from the shut-off blade, facing away from the housing or the pipe section interior and facing from the housing or the pipe section sides of the seal.
  • exposed areas is understood to mean those areas which, in the absence of coating, leave a flow channel between the inflow and the outflow side of the flap.
  • the seal adapts better due to their higher flexibility, so that over a wide range of material-related unevenness of Absperrlamelle and also manufacturing tolerances, eg. B. angular error of the housing or the pipe section can be compensated.
  • the angle of the housing or pipe section inside facing side and the Absperrlamelle facing Side can be between 40 ° and 60 °, preferably 50 °.
  • the seal may rest against the housing or pipe section.
  • the seal with the Absperrlamelle opposite side may rest against a receptacle. This prevents the seal from being able to detach from the housing or pipe section when closing the shut-off blade.
  • the free end of the receptacle can be angled in the direction of the Absperrlamelle.
  • the seal can then be used without further attachment in the space formed between the housing or the pipe section on the one hand and the angular recording on the other. It is obvious that the recording can consist of a sheet.
  • the receptacle has a kind of grid structure with recesses, wherein in such an embodiment, the seal then at least in the region of the recesses of the receptacle a corresponding coating in the exposed areas of the shut-off bar side or the interior of the Has housing or the pipe section facing side, unless the shutoff blade facing side is provided with a coating.
  • the sealing material comprising the cavities is a foam
  • the foam may contain polyetherurethane and / or polyesterurethane.
  • the seal may consist of a soft foam.
  • the coating may be formed as a film, in particular as a polyurethane film.
  • the film has a thickness of preferably 50 microns.
  • a seal for a flap, in particular a fire damper, with a Absperrlamelle which is pivotally mounted in a housing or a pipe section and whose edges in the closed position on the inside of the housing or pipe inside seal from a cavities sealing material, in particular foam, rest, the Seal under the action of the Absperrlamelle pivoting actuating forces is deformable, characterized in that the sealing material, as the exit possibility for a medium in the cavities at least in the area facing the Absperrlamelle at least partially open-celled to form openings and that the seal at least partially such a flexible and gas-impermeable coating, in particular a lamination, that od in the closed position of the shut-off the circumferential gap between the housing the pipe section on the one hand and the shut-off blade on the other hand is closed flow-interrupting.
  • the illustrated fire damper has a housing 1 with two-sided connection flanges 2.
  • the housing 1 may also be a pipe section.
  • a Absperrlamelle 4 is arranged on a central pivot shaft 3. It is not shown that attack on the pivot shaft 3 by hand or motor-driven actuators.
  • Fig. 1 to 3 is the Absperrlamelle 4 reproduced in the closed position in which abut their edges on seals 5, which are arranged in housing-side receptacles 6.
  • the housing-side receptacles 6 each have a free end 7, which is angled in the direction of the Absperrlamelle 4.
  • the seals 5 are made of a foam, which is at least partially open-celled at least in the area facing the Absperrlamelle 4. This ensures that when closing the Absperrlamelle 4 and thus during deformation of the seal 5, the medium contained in the cavities of the foam can escape from these cavities, so that the seal 5 can be deformed without major forces.
  • the coating 8 extends over the entire side. But it is also sufficient that the coating 8 - if they are in the in Fig. 1 shown receptacle 6 is only applied in the region which projects beyond the free end 7 of the receptacle 6. But it is z. B. also quite conceivable that the coating 8 is applied only on the Absperrlamelle 4 facing side of the sealing material 5.
  • the Absperrlamelle 4 facing side of the seal 5 is aligned in the rest position with open Absperrlamelle 4 including an angle with the interior of the housing 1 side facing obliquely to the center of the housing 1 pointing. Therefore, the seal 5 in the area of contact with the Absperrlamelle 4 is very flexible and cuddly.
  • FIGS. 2 and 3 is clearly seen the deformation of the Absperrlamelle 4 facing portion of the seal 5 in the closed position. Due to the oblique orientation of the Absperrlamelle 4 facing side of the seal 5, this is deformed in the direction of the pivot shaft 3 and nestles against the surface of the Absperrlamelle 4, so that the contact surface between the seal 5 and the Absperrlamelle 4 is increased.
  • Fig. 1 to 3 is for better clarity even with arrows 9, the flow of the flowing medium in the housing 1 shown. Since the in the FIGS. 2 and 3 illustrated seal 5 only on the inside of the housing 1 facing side has a coating 8, occurs in Fig. 2 Although the flowing medium due to the open-cell foam in the seal 5, but is prevented due to the coating 8 at an exit to the downstream side of the Absperrlamelle 4. Since the coating 8 directly, as in Fig. 3 shown, is flowing from the flowing medium, the flow does not even enter the seal 5 a. As a result, an optimal seal is ensured in the closed position.
  • the housing 1 may have both round and rectangular cross-sections. Also, in rectangular cross-sections, another arrangement of the pivot shaft 3, as in Fig. 1 illustrated central arrangement, conceivable. It is Z. B. quite possible that the pivot shaft 3 directly adjacent to a wall of a rectangular housing 1, in which case the seal 5 is disposed only on one side of the Absperrlamelle 4.
  • a further seal 10 to seal the area around the pivot shaft 3 in the closed position of the Absperrlamelle 4.
  • This further seal 10 may for example consist of foam, wherein also here preferably the foam is closed cell.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Flow Control Members (AREA)
  • Cartons (AREA)
  • Safety Valves (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Gasket Seals (AREA)
  • Lift Valve (AREA)

Abstract

The flap unit, in particular, fire protection flap unit comprises a pivotable barrier blade (4) located in a housing (1) or a pipe section provided with a seal (6) which consists at least in parts of an open-cell foam and is covered at least in parts with a flexible coating not penetrable by gases, so that in the closed state of the flap unit the circumferential gap between the housing (or pipe section) surface and the barrier blade is closed for gas flow. Also claimed is a circumferential seal forming a part of the flap unit.

Description

Die Erfindung betrifft eine Klappe, insbesondere Brandschutzklappe, mit einer Absperrlamelle, die schwenkbar in einem Gehäuse oder einem Rohrabschnitt gelagert ist und deren Ränder in der Schließstellung an einer gehäuseinnenseitig oder rohrinnenseitig angeordneten Dichtung aus einem Hohlräume aufweisenden Dichtungsmaterial, insbesondere Schaumstoff, anliegen, wobei die Dichtung unter der Wirkung der die Absperrlamelle verschwenkenden Stellkräfte verformbar ist.The invention relates to a flap, in particular fire damper, with a Absperrlamelle which is pivotally mounted in a housing or a pipe section and whose edges in the closed position on a housing inside or pipe inside seal arranged from a cavities sealing material, in particular foam, rest, the seal under the action of the Absperrlamelle pivoting actuating forces is deformable.

Derartige Klappen werden u.a. als Brandschutzklappen eingesetzt. Diese müssen entsprechend den gesetzlichen Vorschriften auch eine Rauchschutzfunktion erfüllen, insbesondere sollen sie während der Schwelbrandphase eines Brandereignisses die Ausbreitung von Rauch verhindern. Dazu sind die Brandschutzklappen mit einer umlaufenden Anschlagdichtung für die Absperrlamelle ausgerüstet. Sofern die Absperrlamelle an einer mittig in dem Gehäuse bzw. dem Rohrabschnitt angeordneten Schwenkwelle drehbar gelagert ist, wird die Absperrlamelle in zwei Teilbereiche von der Schwenkwelle unterteilt. Dabei ist je eine Dichtung entlang des Randes eines Teilbereiches der Absperrlamelle vorgesehen, wobei beide Dichtungen versetzt zueinander und in Strömungsrichtung gesehen auf je einer Seite der Schwenkwelle angeordnet sind. In der Schließstellung liegt die Absperrlamelle mit dem einen Teilbereich auf der einen Seite und mit dem anderen Teilbereich auf der anderen Seite der jeweiligen Dichtung an.Such flaps are used, inter alia, as fire dampers. These must also fulfill a smoke protection function in accordance with the statutory provisions, in particular they should prevent the spread of smoke during the smoldering fire phase of a fire event. For this purpose, the fire dampers are equipped with a circumferential stop seal for the shut-off blade. If the Absperrlamelle is rotatably mounted on a centrally arranged in the housing or the pipe section pivot shaft, the Absperrlamelle is divided into two sections of the pivot shaft. In each case, a seal along the edge of a portion of the Absperrlamelle provided, wherein both seals offset from each other and seen in the flow direction are arranged on each side of the pivot shaft. In the closed position, the shut-off blade lies with the one partial area on one side and with the other partial area on the other side of the respective gasket.

Aus der DE 94 17 340 U1 ist eine Brandschutzklappe bekannt, die eine Absperrklappe aufweist, deren Ränder in der Schließstellung an Anschlägen in Form von Dichtungen aus einem Schaumstoff anliegen. Bei der aus der DE-OS 23 51 082 bekannten Absperrklappe für eine Absperrvorrichtung gegen Feuer und Rauch in Lüftungs- und/oder Heizungsleitungen sind zwei halbumlaufende Dichtrahmen vorgesehen, die Streifen aus elastischer, feuerfester Mineralwolle umfassen.From the DE 94 17 340 U1 a fire damper is known which has a butterfly valve, the edges of which rest in the closed position on stops in the form of seals made of a foam. At the time of the DE-OS 23 51 082 known butterfly valve for a shut-off device against fire and smoke in ventilation and / or heating pipes two semi-circumferential sealing frame are provided which comprise strips of elastic, refractory mineral wool.

In der Praxis bestehen die Dichtungen aus einem geschlossenzelligen Schaumstoff. Durch die geschlossenen Hohlräume des Schaumstoffes ist gewährleistet, dass das strömende Medium in der Schließstellung nicht durch die Dichtung hindurchströmt. Aufgrund der geschlossenzelligen Ausbildung hat die Dichtung insoweit einerseits eine relativ harte und schwer verformbare Grundstruktur. Andererseits muss die Dichtung aber auch eine hinreichend hohe Elastizität besitzen, um materialbedingte Unebenheiten der Absperrlamelle, wie z. B. bei Isolierstofflamellen auf Kalziumsilikatbasis, oder fertigungsbedingte Toleranzen des Gehäuses auszugleichen, damit die Absperrlamelle in der Schließstellung, wobei sie ggf. durch eine mechanische Sperre verriegelt ist, die Anforderungen an die Rauchdichtigkeit erfüllt. Aufgrund der Verwendung von geschlossenzelligen Schaumstoffen ist jedoch die Elastizität begrenzt, da die sich in den Hohlräumen des Schaumstoffs befindliche Luft beim Verformen komprimiert wird. Hierdurch kann sich die Absperrlamelle in der Schließstellung nicht immer optimal an der Absperrlamelle anlegen, so dass Leckagen auftreten können. Man könnte zwar daran denken, die sich aus diesen gegenläufigen Anforderungen ergebenen Probleme durch größere Stellkräfte, insbesondere ein größeres Schließmoment, für die Absperrlamelle zu beseitigen. Diese ist aber in vielen Anwendungsfällen technisch sowie wirtschaftlich nicht vertretbar.In practice, the seals consist of a closed-cell foam. The closed cavities of the foam ensures that the flowing medium does not flow through the seal in the closed position. Due to the closed-cell design, the seal has on the one hand a relatively hard and difficult to deform basic structure. On the other hand, but the seal must also have a sufficiently high elasticity to material-related unevenness of Absperrlamelle such. As with Isolierstofflajellen on calcium silicate, or compensate for manufacturing tolerances of the housing so that the Absperrlamelle in the closed position, where it is possibly locked by a mechanical lock, meets the requirements for smoke-tightness. Due to the use of closed-cell foams, however, the elasticity is limited, as reflected in the cavities of the foam air is compressed during deformation. As a result, the shut-off blade in the closed position can not always optimally create on Absperrlamelle so that leaks can occur. One could indeed think of eliminating the problems arising from these contradictory requirements by larger actuating forces, in particular a larger closing moment, for the shut-off blade. However, this is technically and economically unreasonable in many applications.

Aufgabe der Erfindung ist es daher, eine Klappe anzugeben, deren Dichtung mit relativ geringen Schließmomenten zuverlässig abdichtet.The object of the invention is therefore to provide a flap whose seal reliably seals with relatively low closing moments.

Diese Aufgabe wird dadurch gelöst, dass das Dichtungsmaterial, insbesondere der Schaumstoff, als Austrittsmöglichkeit für ein in den Hohlräumen befindliches Medium zumindest in dem der Absperrlamelle zugewandten Bereich wenigstens teilweise offenzellig unter Bildung von Öffnungen ausgebildet ist und dass die Dichtung zumindest bereichsweise derart eine flexible und gasundurchlässige Beschichtung, insbesondere eine Kaschierung, aufweist, dass in der Schließstellung der Absperrlamelle der umlaufende Spalt zwischen Gehäuse oder Rohrabschnitt einerseits und Absperrlamelle andererseits strömungsunterbrechend verschlossen ist. Durch die offenzelligen Hohlräume des Dichtungsmaterials zumindest im Bereich des der Absperrlamelle zugewandten Bereiches wird bei Verformen der Dichtung, das durch das Schließmoment der Absperrklappe verursacht wird, das in den Hohlräumen der Dichtung befindliche Medium ohne weiteres aus diesen über die Öffnungen herausgedrückt, so dass die Dichtung eine hohe Elastizität aufweist und sich leicht und optimal der Oberfläche der Absperrlamelle anpasst. Um die Dichtigkeit zu gewährleisten, ist auf dem Dichtungsmaterial die flexible und gasundurchlässige Beschichtung vorgesehen, so dass das in dem Gehäuse bzw. dem Rohrabschnitt strömende Medium den um die Absperrlamelle herum verlaufenden Spalt nicht passieren kann.This object is achieved in that the sealing material, in particular the foam, is formed as an outlet possibility for a medium in the cavities at least in the area facing the Absperrlamelle at least partially open-celled to form openings and that the seal at least partially such a flexible and gas-impermeable Coating, in particular a lamination, has, in the closed position of the shut-off blade, the circumferential gap between housing or pipe section on the one hand and shut-off blade on the other hand is closed flow-interrupting. As a result of the open-cell cavities of the sealing material, at least in the region of the area facing the shut-off blade, when the seal is deformed, which is caused by the closing moment of the shut-off valve, the medium located in the cavities of the seal is readily pushed out of the openings via the openings, so that the seal has a high elasticity and easily and optimally adapts to the surface of Absperrlamelle. In order to ensure the tightness, the flexible and gas-impermeable coating is provided on the sealing material, so that the medium flowing in the housing or the pipe section can not pass the gap running around the shut-off disk.

Bei einer Ausführungsform kann zumindest die der Absperrlamelle zugewandte Seite der Dichtung die Beschichtung aufweisen. In der Schließstellung liegt die so mit der Beschichtung versehene Seite an der Absperrlamelle an, so dass das Gehäuse oder der Rohrabschnitt strömungsunterbrechend verschlossen werden kann.In one embodiment, at least the side of the seal facing the shut-off blade may have the coating. In the closed position, the side thus provided with the coating on the Absperrlamelle, so that the housing or the pipe section can be closed flow interruption.

Bei einer anderen Ausführungsform können zumindest die freiliegenden Bereiche von den der Absperrlamelle abgewandten, von den dem Gehäuse- bzw. dem Rohrabschnittinneren zugewandten sowie von den dem Gehäuse bzw. dem Rohrabschnitt zugewandten Seiten der Dichtung die Beschichtung aufweisen. Unter dem Begriff "freiliegende Bereiche" werden solche Bereiche verstanden, die bei fehlender Beschichtung einen Strömungskanal zwischen der Anström- und der Abströmseite der Klappe verbleiben lassen.In another embodiment, at least the exposed areas may have the coating facing away from the shut-off blade, facing away from the housing or the pipe section interior and facing from the housing or the pipe section sides of the seal. The term "exposed areas" is understood to mean those areas which, in the absence of coating, leave a flow channel between the inflow and the outflow side of the flap.

Zur Verbesserung des Anliegens der Dichtung an den Rändern der Absperrlamelle kann die der Absperrlamelle zugewandte Seite der Dichtung in der Ruhestellung bei geöffneter Absperrlamelle unter Einschluss eines Winkels mit der dem Gehäuse- bzw. Rohrabschnittinneren zugewandten Seite der Dichtung schräg zur Mitte des Gehäuses oder des Rohrabschnittes hinweisend ausgerichtet sein. Wegen der Verjüngung des Querschnitts der Dichtung im Kantenbereich zwischen der der Absperrlamelle zugewandten Seite und der dem Gehäuse- bzw. Rohrabschnittinneren zugewandten Seite kann sich die Dichtung beim Schließen der Absperrlamelle leicht verformen, so dass das Anliegen der Dichtung an die Absperrlamelle verbessert wird. Die Dichtung schmiegt sich aufgrund ihrer höheren Biegsamkeit besser an, so dass über einen weiten Bereich materialbedingte Unebenheiten der Absperrlamelle und auch fertigungsbedingte Toleranzen, z. B. Winkelfehler des Gehäuses bzw. des Rohrabschnittes ausgeglichen werden.To improve the concern of the seal at the edges of the Absperrlamelle the Absperrlamelle facing side of the seal in the rest position with open Absperrlamelle enclosing an angle with the housing or pipe section inside facing side of the seal obliquely to the center of the housing or the pipe section indicative be aligned. Because of the taper of the cross section of the seal in the edge region between the side facing the Absperrlamelle and the housing or tube inside section facing the seal when closing the Absperrlamelle can easily deform, so that the concern of the seal is improved to the Absperrlamelle. The seal adapts better due to their higher flexibility, so that over a wide range of material-related unevenness of Absperrlamelle and also manufacturing tolerances, eg. B. angular error of the housing or the pipe section can be compensated.

Der Winkel der dem Gehäuse- bzw. Rohrabschnittinneren zugewandten Seite und der der Absperrlamelle zugewandten Seite kann zwischen 40° und 60°, vorzugsweise 50°, betragen.The angle of the housing or pipe section inside facing side and the Absperrlamelle facing Side can be between 40 ° and 60 °, preferably 50 °.

Bei einer Ausführungsform kann die Dichtung an dem Gehäuse bzw. dem Rohrabschnitt anliegen.In one embodiment, the seal may rest against the housing or pipe section.

Bei einer anderen Ausführungsform kann die Dichtung mit der der Absperrlamelle entgegengesetzten Seite an einer Aufnahme anliegen. Hierdurch wird verhindert, dass sich die Dichtung beim Schließen der Absperrlamelle unter Umständen von dem Gehäuse bzw. Rohrabschnitt lösen kann.In another embodiment, the seal with the Absperrlamelle opposite side may rest against a receptacle. This prevents the seal from being able to detach from the housing or pipe section when closing the shut-off blade.

Zusätzlich kann das freie Ende der Aufnahme in Richtung der Absperrlamelle abgewinkelt sein. Die Dichtung kann dann ohne eine weitere Befestigung in den zwischen dem Gehäuse bzw. dem Rohrabschnitt einerseits und der winkligen Aufnahme andererseits gebildeten Freiraum eingesetzt werden. Es liegt auf der Hand, dass die Aufnahme aus einem Blech bestehen kann. Es ist aber auch durchaus möglich, dass die Aufnahme eine Art Gitterstruktur mit Ausnehmungen aufweist, wobei bei einer solchen Ausführungsform die Dichtung dann zumindest im Bereich der Ausnehmungen der Aufnahme eine entsprechende Beschichtung in den freiliegenden Bereichen der der Absperrlamelle abgewandten Seite bzw. der dem Inneren des Gehäuses bzw. des Rohrabschnittes zugewandten Seite aufweist, sofern nicht die der Absperrlamelle zugewandte Seite mit einer Beschichtung versehen ist.In addition, the free end of the receptacle can be angled in the direction of the Absperrlamelle. The seal can then be used without further attachment in the space formed between the housing or the pipe section on the one hand and the angular recording on the other. It is obvious that the recording can consist of a sheet. But it is also quite possible that the receptacle has a kind of grid structure with recesses, wherein in such an embodiment, the seal then at least in the region of the recesses of the receptacle a corresponding coating in the exposed areas of the shut-off bar side or the interior of the Has housing or the pipe section facing side, unless the shutoff blade facing side is provided with a coating.

Sofern das die Hohlräume aufweisende Dichtungsmaterial ein Schaumstoff ist, kann der Schaumstoff Polyetherurethan und/oder Polyestherurethan enthalten.If the sealing material comprising the cavities is a foam, the foam may contain polyetherurethane and / or polyesterurethane.

Die Dichtung kann aus einem Weichschaum bestehen.The seal may consist of a soft foam.

Die Beschichtung kann als Folie, insbesondere als Polyurethan-Folie, ausgebildet sein.The coating may be formed as a film, in particular as a polyurethane film.

Dabei bietet sich an, dass die Folie eine Dicke von vorzugsweise 50 µm aufweist.It is advisable that the film has a thickness of preferably 50 microns.

Eine Dichtung für eine Klappe, insbesondere eine Brandschutzklappe, mit einer Absperrlamelle, die schwenkbar in einem Gehäuse oder einem Rohrabschnitt gelagert ist und deren Ränder in der Schließstellung an der gehäuseinnenseitig oder rohrinnenseitig angeordneten Dichtung aus einem Hohlräume aufweisenden Dichtungsmaterial, insbesondere Schaumstoff, anliegen, wobei die Dichtung unter der Wirkung der die Absperrlamelle verschwenkenden Stellkräfte verformbar ist, ist dadurch gekennzeichnet, dass das Dichtungsmaterial, insbesondere der Schaumstoff, als Austrittsmöglichkeit für ein in den Hohlräumen befindliches Medium zumindest in dem der Absperrlamelle zugewandten Bereich wenigstens teilweise offenzellig unter Bildung von Öffnungen ausgebildet ist und dass die Dichtung zumindest bereichsweise derart eine flexible und gasundurchlässige Beschichtung, insbesondere eine Kaschierung, aufweist, dass in der Schließstellung der Absperrlamelle der umlaufende Spalt zwischen Gehäuse oder Rohrabschnitt einerseits und Absperrlamelle andererseits strömungsunterbrechend verschlossen ist.A seal for a flap, in particular a fire damper, with a Absperrlamelle which is pivotally mounted in a housing or a pipe section and whose edges in the closed position on the inside of the housing or pipe inside seal from a cavities sealing material, in particular foam, rest, the Seal under the action of the Absperrlamelle pivoting actuating forces is deformable, characterized in that the sealing material, as the exit possibility for a medium in the cavities at least in the area facing the Absperrlamelle at least partially open-celled to form openings and that the seal at least partially such a flexible and gas-impermeable coating, in particular a lamination, that od in the closed position of the shut-off the circumferential gap between the housing the pipe section on the one hand and the shut-off blade on the other hand is closed flow-interrupting.

Im Folgenden wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert. Es zeigen:

Fig. 1
schematisch einen Querschnitt durch eine Brandschutzklappe,
Fig. 2
den Bereich "A" des Gegenstands nach Fig. 1,
Fig. 3
den Bereich "B" des Gegenstands nach Fig. 1 und
Fig. 4
einen Schnitt durch eine erfindungsgemäße Dichtung.
In the following, an illustrated in the drawing embodiment of the invention will be explained. Show it:
Fig. 1
schematically a cross section through a fire damper,
Fig. 2
the area "A" of the object Fig. 1 .
Fig. 3
the area "B" of the object Fig. 1 and
Fig. 4
a section through a seal according to the invention.

In allen Figuren werden für gleiche bzw. gleichartige Bauteile die gleichen Bezugszeichen verwendet.In all figures, the same reference numerals are used for identical or similar components.

Die dargestellte Brandschutzklappe weist ein Gehäuse 1 mit beidseitigen Anschlussflanschen 2 auf. Bei dem Gehäuse 1 kann es sich auch um einen Rohrabschnitt handeln. Im Gehäuse 1 ist auf einer mittigen Schwenkwelle 3 eine Absperrlamelle 4 angeordnet. Nicht dargestellt ist, dass an der Schwenkwelle 3 von Hand oder motorisch antreibbare Stellelemente angreifen.The illustrated fire damper has a housing 1 with two-sided connection flanges 2. The housing 1 may also be a pipe section. In the housing 1, a Absperrlamelle 4 is arranged on a central pivot shaft 3. It is not shown that attack on the pivot shaft 3 by hand or motor-driven actuators.

In den Fig. 1 bis 3 ist die Absperrlamelle 4 in der Schließstellung wiedergegeben, bei der ihre Ränder an Dichtungen 5 anliegen, die in gehäuseinnenseitigen Aufnahmen 6 angeordnet sind. Die gehäuseinnenseitigen Aufnahmen 6 weisen je ein freies Ende 7 auf, das in Richtung der Absperrlamelle 4 abgewinkelt ist.In the Fig. 1 to 3 is the Absperrlamelle 4 reproduced in the closed position in which abut their edges on seals 5, which are arranged in housing-side receptacles 6. The housing-side receptacles 6 each have a free end 7, which is angled in the direction of the Absperrlamelle 4.

Die Dichtungen 5 bestehen aus einem Schaumstoff, der zumindest in dem der Absperrlamelle 4 zugewandten Bereich wenigstens teilweise offenzellig ausgebildet ist. Hierdurch wird gewährleistet, dass beim Schließen der Absperrlamelle 4 und somit beim Verformen der Dichtung 5 das in den Hohlräumen des Schaumstoffs befindliche Medium aus diesen Hohlräumen austreten kann, so dass die Dichtung 5 ohne größere Kräfte verformt werden kann.The seals 5 are made of a foam, which is at least partially open-celled at least in the area facing the Absperrlamelle 4. This ensures that when closing the Absperrlamelle 4 and thus during deformation of the seal 5, the medium contained in the cavities of the foam can escape from these cavities, so that the seal 5 can be deformed without major forces.

Wie in den Fig. 2 bis 4 dargestellt, weist die Dichtung 5 auf der dem Inneren des Gehäuses 1 zugewandten Seite eine Beschichtung 8 auf, die flexibel und gasundurchlässig ist. In dem dargestellten Ausführungsbeispiel erstreckt sich die Beschichtung 8 über die komplette Seite. Es reicht aber auch aus, dass die Beschichtung 8 - sofern sich diese in der in Fig. 1 dargestellten Aufnahme 6 befindet -lediglich in dem Bereich aufgebracht ist, der über das freie Ende 7 der Aufnahme 6 hinausragt. Es ist aber z. B. auch durchaus denkbar, dass die Beschichtung 8 lediglich auf der der Absperrlamelle 4 zugewandten Seite des Dichtungsmaterials 5 aufgebracht ist.As in the Fig. 2 to 4 shown, the seal 5 on the inside of the housing 1 side facing a coating 8, which is flexible and gas-impermeable. In the illustrated embodiment, the coating 8 extends over the entire side. But it is also sufficient that the coating 8 - if they are in the in Fig. 1 shown receptacle 6 is only applied in the region which projects beyond the free end 7 of the receptacle 6. But it is z. B. also quite conceivable that the coating 8 is applied only on the Absperrlamelle 4 facing side of the sealing material 5.

Die der Absperrlamelle 4 zugewandte Seite der Dichtung 5 ist in der Ruhestellung bei geöffneter Absperrlamelle 4 unter Einschluss eines Winkels mit der dem Inneren des Gehäuses 1 zugewandten Seite schräg zur Mitte des Gehäuses 1 hinweisend ausgerichtet ist. Daher ist die Dichtung 5 im Berührungsbereich mit der Absperrlamelle 4 sehr biegsam und anschmiegsam.The Absperrlamelle 4 facing side of the seal 5 is aligned in the rest position with open Absperrlamelle 4 including an angle with the interior of the housing 1 side facing obliquely to the center of the housing 1 pointing. Therefore, the seal 5 in the area of contact with the Absperrlamelle 4 is very flexible and cuddly.

In den Fig. 2 und 3 ist deutlich die Verformung des der Absperrlamelle 4 zugewandten Bereichs der Dichtung 5 in der Schließstellung zu sehen. Aufgrund der schrägen Ausrichtung der der Absperrlamelle 4 zugewandten Seite der Dichtung 5 wird diese in Richtung der Schwenkwelle 3 verformt und schmiegt sich so an die Oberfläche der Absperrlamelle 4 an, so dass die Anlagefläche zwischen der Dichtung 5 und der Absperrlamelle 4 vergrößert wird.In the FIGS. 2 and 3 is clearly seen the deformation of the Absperrlamelle 4 facing portion of the seal 5 in the closed position. Due to the oblique orientation of the Absperrlamelle 4 facing side of the seal 5, this is deformed in the direction of the pivot shaft 3 and nestles against the surface of the Absperrlamelle 4, so that the contact surface between the seal 5 and the Absperrlamelle 4 is increased.

In den Fig. 1 bis 3 ist zur besseren Verdeutlichung noch mit Pfeilen 9 die Strömung des in dem Gehäuse 1 strömenden Mediums dargestellt. Da die in den Fig. 2 und 3 dargestellte Dichtung 5 lediglich auf der dem Inneren des Gehäuses 1 zugewandten Seite eine Beschichtung 8 aufweist, tritt in Fig. 2 das strömende Medium aufgrund des offenzelligen Schaumstoffes zwar in die Dichtung 5 ein, wird jedoch aufgrund der Beschichtung 8 an einem Austritt auf die Abströmseite der Absperrlamelle 4 gehindert. Da die Beschichtung 8 unmittelbar, wie in Fig. 3 dargestellt, von dem strömenden Medium angeströmt wird, tritt die Strömung erst gar nicht in die Dichtung 5 ein. Hierdurch ist in der Schließstellung eine optimale Abdichtung gewährleistet.In the Fig. 1 to 3 is for better clarity even with arrows 9, the flow of the flowing medium in the housing 1 shown. Since the in the FIGS. 2 and 3 illustrated seal 5 only on the inside of the housing 1 facing side has a coating 8, occurs in Fig. 2 Although the flowing medium due to the open-cell foam in the seal 5, but is prevented due to the coating 8 at an exit to the downstream side of the Absperrlamelle 4. Since the coating 8 directly, as in Fig. 3 shown, is flowing from the flowing medium, the flow does not even enter the seal 5 a. As a result, an optimal seal is ensured in the closed position.

Das Gehäuse 1 kann sowohl runde als auch rechteckige Querschnitte aufweisen. Auch ist bei rechteckigen Querschnitten eine andere Anordnung der Schwenkwelle 3, als die in Fig. 1 dargestellte mittige Anordnung, denkbar. Es ist z. B. durchaus möglich, dass die Schwenkwelle 3 unmittelbar an eine Wand eines rechteckigen Gehäuses 1 angrenzt, wobei in diesem Fall die Dichtung 5 lediglich auf einer Seite der Absperrlamelle 4 angeordnet ist.The housing 1 may have both round and rectangular cross-sections. Also, in rectangular cross-sections, another arrangement of the pivot shaft 3, as in Fig. 1 illustrated central arrangement, conceivable. It is Z. B. quite possible that the pivot shaft 3 directly adjacent to a wall of a rectangular housing 1, in which case the seal 5 is disposed only on one side of the Absperrlamelle 4.

Wie in Fig. 1 dargestellt, weist das Gehäuse 1 im Bereich der Schwenkwelle 3 eine weitere Abdichtung 10 auf, um den Bereich um die Schwenkwelle 3 in der Schließstellung der Absperrlamelle 4 abzudichten. Diese weitere Abdichtung 10 kann beispielsweise aus Schaumstoff bestehen, wobei auch hier vorzugsweise der Schaumstoff geschlossenzellig ausgebildet ist.As in Fig. 1 illustrated, the housing 1 in the region of the pivot shaft 3, a further seal 10 to seal the area around the pivot shaft 3 in the closed position of the Absperrlamelle 4. This further seal 10 may for example consist of foam, wherein also here preferably the foam is closed cell.

Claims (13)

  1. Flap, in particular fire protection flap, said flap comprising a shut-off disc (4), which is mounted so as to be pivotable in a housing (1) or a pipe section and the edges of which, in the closed position, abut against a seal (5), which is located on the inside of the housing or on the inside of the pipe and is produced from a sealing material that has hollow spaces, in particular foam material, wherein the seal (5) is deformable under the effect of the actuating forces that pivot the shut-off disc (4), characterized in that the sealing material, in particular the foam material, is realized at least partially in an open-cell manner, thus forming openings, as an outlet option for a medium situated in the hollow spaces, at least in the region facing the shut-off disc (4), and in that the seal (5) has a flexible, gas-impermeable coating, in particular a lamination, in such a manner at least in regions that, in the closed position of the shut-off disc (4), the circumferential gap between housing (1) or pipe section on the one side and shut-off disc (4) on the other is closed so as to interrupt the flow.
  2. Flap according to Claim 1, characterized in that at least the side of the seal (5) that faces the shut-off disc (4) has the coating (8).
  3. Flap according to Claim 1 or 2, characterized in that at least the exposed regions of the sides of the seal (5) remote from the shut-off disc (4), of the sides of the seal that face the interior of the housing or the interior of the pipe section and of the sides of the seal that face the housing (1) or the pipe section have the coating (8).
  4. Flap according to one of claims 1 to 3, characterized in that the side of the seal (5) that faces the shut-off disc (4), in the inoperative position with the shut-off disc (4) open, forming an angle with the side of the seal (5) that faces the interior of the housing or the interior of the pipe section, is aligned pointing inclinedly to the centre of the housing (1) or of the pipe section.
  5. Flap according Claim 4, characterized in that the angle is between 40° and 60°, preferably 50°.
  6. Flap according to one of claims 1 to 5, characterized in that the seal (5) abuts against the housing (1) or the pipe section.
  7. Flap according to one of claims 1 to 6, characterized in that the seal (5) abuts against an accommodating means (6) by way of the side opposite the shut-off disc (4).
  8. Flap according to Claim 7, characterized in that the free end (7) of the accommodating means (6) is angled in the direction of the shut-off disc (4).
  9. Flap according to one of claims 1 to 8, characterized in that the foam material includes polyurethane.
  10. Flap according to one of claims 1 to 10, characterized in that the foam material includes polyester urethane.
  11. Flap according to one of claims 1 to 10, characterized in that the seal (5) is produced from a soft foam material.
  12. Flap according to one of claims 1 to 11, characterized in that the coating (8) is realized as a film, in particular as a polyurethane film.
  13. Flap according to Claim 12, characterized in that the film has a thickness of preferably 50 µm.
EP02001465A 2001-02-09 2002-01-22 Damper, in particular fire damper Expired - Lifetime EP1230953B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20102300U DE20102300U1 (en) 2001-02-09 2001-02-09 Flap, especially fire damper
DE20102300U 2001-02-09

Publications (2)

Publication Number Publication Date
EP1230953A1 EP1230953A1 (en) 2002-08-14
EP1230953B1 true EP1230953B1 (en) 2010-05-19

Family

ID=7952773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001465A Expired - Lifetime EP1230953B1 (en) 2001-02-09 2002-01-22 Damper, in particular fire damper

Country Status (6)

Country Link
EP (1) EP1230953B1 (en)
AT (1) ATE468161T1 (en)
DE (2) DE20102300U1 (en)
DK (1) DK1230953T3 (en)
ES (1) ES2346404T3 (en)
PT (1) PT1230953E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20116484U1 (en) * 2001-10-09 2001-12-13 Trox Gmbh Geb Flap, especially fire damper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2351082A1 (en) * 1973-10-11 1975-04-24 Nordluft Norddeutsche Ges Fuer Fire and smoke shutoff flap for ventilating duct - has chamfer on upper edge, on side toward main flow direction in open position
DE7710894U1 (en) * 1977-04-06 1977-07-21 Gebrueder Trox Gmbh, 4133 Neukirchen- Vluyn FIRE PROTECTION FLAP FOR A VENTILATION LINE
DE9417340U1 (en) * 1994-10-28 1994-12-15 Trox Gmbh Geb Fire damper
FR2763854B1 (en) * 1997-06-03 1999-07-09 Aldes Aeraulique DEVICE FOR SEALING A VENTILAION DUCT, IN PARTICULAR A FIRE-RESISTANT VALVE OR SMOKE EXHAUST

Also Published As

Publication number Publication date
ATE468161T1 (en) 2010-06-15
ES2346404T3 (en) 2010-10-15
DK1230953T3 (en) 2010-09-13
EP1230953A1 (en) 2002-08-14
DE20102300U1 (en) 2001-05-31
DE50214434D1 (en) 2010-07-01
PT1230953E (en) 2010-08-17

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