EP0020921B1 - Fire wall - Google Patents

Fire wall Download PDF

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Publication number
EP0020921B1
EP0020921B1 EP80102177A EP80102177A EP0020921B1 EP 0020921 B1 EP0020921 B1 EP 0020921B1 EP 80102177 A EP80102177 A EP 80102177A EP 80102177 A EP80102177 A EP 80102177A EP 0020921 B1 EP0020921 B1 EP 0020921B1
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EP
European Patent Office
Prior art keywords
fire
wall
lid
resistant
passage
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
Application number
EP80102177A
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German (de)
French (fr)
Other versions
EP0020921A1 (en
Inventor
John Anderegg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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Filing date
Publication date
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to AT80102177T priority Critical patent/ATE3000T1/en
Publication of EP0020921A1 publication Critical patent/EP0020921A1/en
Application granted granted Critical
Publication of EP0020921B1 publication Critical patent/EP0020921B1/en
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C2/00Fire prevention or containment
    • A62C2/06Physical fire-barriers
    • A62C2/12Hinged dampers
    • A62C2/14Hinged dampers with two or more blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426Air-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 actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/30Details or features not otherwise provided for comprising fireproof material

Definitions

  • the invention relates to a firewall with a fire-resistant lockable passage opening, in particular for ducts of ventilation and air conditioning systems, a fire-resistant flap wing provided with a drive, at least partially recessed, inserted in the passage opening and rotatably mounted, on the circumference of which it is in closed position rests against a sealing edge, and wherein in the firewall to the side of the passage opening there is a chamber separated from the passage opening by a transverse wall, in which the drive for the flap wing is accommodated, a bearing bush connecting the passage opening and the chamber in the transverse wall is let in.
  • Firewalls with fire dampers of the type mentioned at the outset are known (see, for example, DE-A-2 259 656).
  • the damper wing is rotatably mounted in a sheet metal built-in housing that is inserted as a duct piece in the ventilation duct in the area of the firewall, the damper actuator and a manual adjustment device being inserted outside the duct into the firewall from one side are, but partially protrude into one of the two rooms or fire compartments that are separated by the firewall.
  • the object of the invention is therefore to provide a fire wall with a fire damper in which the same fire resistance is achieved in both directions without much additional effort, d. H. which - including its drive - is symmetrical to the center of the firewall with regard to its fire resistance or fire protection effect.
  • this object is achieved in that the transverse wall consists of fire-resistant material and that the chamber extends at least over the entire thickness of the firewall and to the outside, i. H. to the fire sections separated by the firewall, is covered by removable covers, the fire resistance of which is at least half as large as that of the firewall or the flap wing.
  • the drive is also fully integrated into the firewall and, thanks to the fire-resistant cover, whose fire resistance is advantageously designed for one cover even the same as that of the firewall, is reliably protected against fire from the outside, while the fire-resistant transverse wall encroaches on a fire from the passage opening prevented here.
  • the new flap arrangement also has other advantages: Its functionality and effectiveness is independent of horizontal or vertical installation; it is simple to manufacture and, apart from the slightly protruding covers, does not require any outside the firewall Space for additional fire-resistant covers for the drive.
  • transverse wall can be used as a simple web in the firewall - in which case, for example, the one bearing for the flap wing or line feeds for the drive are embedded in the firewall itself - it is advantageous to integrate the transverse wall in a housing-like frame, which as The whole can be inserted into the recess formed by the passage opening and the chamber.
  • This frame can be prefabricated, for example cast as one piece, or assembled from individual, horizontal and vertical partial walls which are screwed or glued to one another.
  • thermal bridges perpendicular to the surface of the firewall made of heat-conducting metals can be avoided if the transverse wall and / or the frame consist of two separate metal frames, which are poured with a lightweight concrete with high fire resistance and are therefore connected to each other without thermal bridges.
  • Series production for the vertical walls of the frame can be considerably simplified if the outer walls of the frame parallel to the transverse wall carry identical and aligned bearing bushes with the bearing bush in the transverse wall.
  • the bearing bush in the outer wall on the side of the transverse wall facing away from the drive then serves as a second bearing for the flap wing, while the bearing bush in the other outer wall for the supply of drive and control energies and for the entry of signal lines into the chamber containing the drive is being used.
  • the heat flow through the flap wing can be significantly inhibited if the flap wing is at least largely free of metal and consists of a fire-resistant frame that is covered on both sides with fire-resistant plates and filled with mineral wool.
  • the flap wing is separated from one another by shaft journals the bearing bushes of the transverse wall and an outer wall is mounted on self-aligning slide bearings, the shaft journals also being able to be kept in alignment with one another in the interior of the flap wing by means of an offset piece, to which the shaft journals are displaceable in the axial direction.
  • the replacement of a continuous shaft by two separate shaft journals in turn complicates the heat flow, the intermediate piece taking over the centering of the shaft journals relative to one another, but allowing the shaft journals to move relative to it due to different thermal movements.
  • a fire-resistant seal of the rotatable flap wing against the fixed walls can be achieved in the area of the shaft of the flap wing in a structurally safe and simple manner by making the shaft of the flap wing in the gap between the flap wing and the outer or transverse wall by a felt connected to the flap wing fire-resistant material is protected, which slides on a fire-resistant cover for the bearing bushes embedded in the walls.
  • the measure can also be taken in such a way that the flap wing is mounted in the open state between flow-carrying internals in the ventilation duct.
  • the flap wing can be arranged symmetrically to the surfaces of the firewall in the center of the transverse wall or the frame.
  • the fire damper is intended for closing a passage opening 1 of a ventilation duct 2 (FIG. 2), in which flow-conducting internals 3 are provided, between which the flap wing 4 is placed in an open position in a flow-favorable manner. It is arranged in a firewall 5, in which a recess is provided, which is extended relative to the passage opening 1 on three sides - to the right, up and down in FIG. 1 - by the width of a frame 6; on the fourth page, d. H. 1 to the left, the passage opening 1 is delimited by a transverse wall 8, behind which a chamber 7 is provided for receiving the drive for the flap wing 4.
  • the two lateral boundaries of the recess form vertical outer walls 9; the transverse wall 8 and the outer walls 9 are joined horizontally at the top by a lintel 10a and at the bottom by a ledge 10b to form the frame 6 inserted into the recess, e.g. B. screwed together.
  • the drive which is only indicated schematically, consists of a compressed air cylinder 11 suspended in the chamber 7 at the lintel 10a of the frame 6, to which pressure medium is supplied via a line 12.
  • the compressed air cylinder 11 With the flap wing 4, the compressed air cylinder 11 is connected via a piston rod 13 (FIG. 3) which engages with its end on a fork-shaped lever 14 via an axis 18; this in turn is part of a hub 15 which sits on a shaft journal 16 of the flap 4.
  • bearing bushes 17 are inserted in the middle; in the bearing bush 17 of the right outer wall 9 in Fig. 1 and in that of the transverse wall 8, the shaft journals 16 of the flap wing 4 are mounted in a manner to be described in more detail, while the bearing bush 17 in the left outer wall 9 as an entry opening into the chamber 7 for the pressure medium power 12 is used.
  • the supply of the pressure medium line 12 - and likewise of control and signal lines, not shown - to the bearing bush 17 of the left outer wall 9 takes place through a plastic pipe 19 laid in the firewall, as is customary for the guidance of lines to be subsequently pulled into concrete walls.
  • the chamber 7 is covered on both sides by covers 20 which are fastened in the frame 6, for example with the aid of screws 21.
  • the covers 20 can also be constructed similarly to the flap 4, the construction of which is described in more detail.
  • the frame 6 inserted into the recess of the firewall 5 is constructed in such a way that thermal bridges in directions perpendicular to the firewall 5 - for example by metal parts passing through in this direction - are avoided as far as possible.
  • the parts of the frame 6, that is to say the walls 8 and 9, and the horizontal elements 10a and 10b are therefore delimited on their narrow sides by metal frameworks 23 (FIG. 4) which are not connected to one another and which are poured with a cast body 24 made of refractory lightweight concrete and via anchors 25 are additionally anchored.
  • Struts 25a leading from the metal frames 23 into the cast body 24 serve to fasten anchor rails 26, as are customary as assembly strips in concrete bodies.
  • the bearing bushes 17 are additionally cast into the walls 8 and 9.
  • a frame 27 (FIG. 5) made of an asbestos fiber material is provided as the load-bearing element of the flap wing 4;
  • the shaft journals 16 are fastened by means of band irons 28 screwed to it, with which the flap wing 4 is rotatably mounted in the bearing bushes 17.
  • These shaft journals 16 are centered relative to one another by an angular intermediate piece 29 (FIG. 2) which is slidably connected to the shaft journals 16 by belts 30 wrapping around both parts in such a way that the shaft journals 16 can perform unhindered thermal movements relative to the intermediate piece 29.
  • the shaft journals 16, the band irons 28, the intermediate piece 29 and the bands 30 are the only metal parts of the flap wing 4; apart from the externally guided shaft journals 16, they are arranged inside the frame 27, and therefore largely shielded from heat, the interior of the frame 27 being additionally filled with mineral wool 31 and covered on the outside by asbestos plates 32 (FIG. 2).
  • thermal bridges are largely avoided in it too, because on the one hand the metal content is very low and on the other hand there are no continuous metal connections perpendicular to its surface.
  • the shaft journals 16 for the flap wing 4 are supported in the bearing bushes 17 via spherical plain bearings 33 in order, as mentioned, to reduce the influence of inaccuracies in the concrete structure on the storage and functionality of the flap wing 4.
  • the fixed part of the bearing 33 forms a ring 34 which is pressed by a spacer bush 35 against a shoulder in the bearing bush 17; it is concave in the shape of a spherical shell and receives a second ring 36 which sits on the shaft journal 16 and is curved on the outside.
  • the bearing bush 17 shown in FIG. 6, which is seated in the right outer wall 9 of FIG. 1, is closed to the outside of the firewall 5 by a cover disk 37, for example soldered on.
  • the bearing bush 17 is covered by a cover 38 made of fire-resistant material, for example Eternit, which is fastened to the outer wall 9.
  • the cover 38 has at least on its outside facing the flap wing 4 a smooth surface relative to the concrete of the frame 6; this serves as a sliding surface for a felt 39 made of fire-resistant material, for example made of graphite, attached to the flap wing 4.
  • the felt 39 which is inserted in a slightly compressed form between the flap 4 and the cover 38, on the one hand brings about a fire-resistant seal between these parts which are moved relative to one another and protects other the shaft journal 16 before overheating.
  • the closed flap wing 4 rests on seals 22 which run in the circumferential direction of the passage opening 1 (FIG. 1).
  • the seals 22 contain a deformable, elastic cord 40 made of refractory material, for example of a mineral wool based on silicate; this is held by a bracket 41 made of sheet metal along the circumference of the passage opening 1 on the walls of the frame 6.
  • the bracket 41 is stepped because of the greater flexibility against thermal expansion and bent to increase its stability at both ends to form loops.
  • the clips 42 While one end of the holder 41 presses the cord 40 against the wall 9, the other end is held by clips 42, which are distributed over the circumference of the passage opening 1 in the anchor rails 26.
  • the clips 42 have an elongated hole 43 (FIG. 6) in order to enable the sealing cord 40 to be adjusted relative to or infeed in the direction of the closed flap wing 4.
  • An anchor rail screw 44 protrudes through the elongated hole 43 for fastening the clamps 42 in the anchor rail 26, with which the clamp 42 is clamped on the anchor rail 26 by a washer 45 and a nut 46. As shown in FIG.
  • the free ends of the sealing elements 22 protrude into cutouts of the cover 38, the deformability and the elasticity of the sealing cord 40 being butted against the cover 38 both in the direction of its longitudinal direction, which extends in the circumferential direction of the passage opening 1, and also allow perpendicular to it during assembly; In this way, a secure seal between the free ends of the sealing cord 40, which is not necessarily continuous in a rotary flap, and the flap wing 4 or its shaft is ensured.

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  • Engineering & Computer Science (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Load-Bearing And Curtain Walls (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Insulated Conductors (AREA)
  • Special Wing (AREA)
  • Air-Flow Control Members (AREA)
  • Clamps And Clips (AREA)

Abstract

1. A fire-resistant wall (5) formed with a passage (1) closable in fire-resistant manner by a fire protection flap and of use more particularly for trunking (2) of ventilation and conditioning facilities, a fire-resistant lid (4) which has a drive (11 to 15) being received at least in a partly recessed manner and mounted for rotation in the passage (1), the lid (4) engaging by way of a sealing edge (22) with the passage periphery when in the closed position, a chamber (7) which is separated from the passage (1) by a cross-wall (8) being provided in the fire-resistant wall (5) laterally of the passage (1), such chamber receiving the drive (11-15) for the lid (4), the cross-wall receiving a bearing bush (17) interconnecting the passage (1) and the chamber (7), characterized in that the cross-wall (8) is made of a refractory substance and the chamber (7) extends at least over the whole thickness of the fire-resistant wall (5) and is covered on the outside - i.e. , in relation to the portions of fire separated from one another by the refractory wall (5) - by releasable covers (20) whose fire resistance is in each case at least half that of the fire-resistant wall (5) or lid (4).

Description

Die Erfindung betrifft eine Brandmauer mit einer durch eine Brandschutzklappe feuerbeständig verschließbaren Durchtrittsöffnung, insbesondere für Kanäle von Lüftungs- und Klimaanlagen, wobei ein mit einem Antrieb versehener feuerbeständiger Klappenflügel, mindestens teilweise versenkt, in der Durchtrittsöffnung eingesetzt und drehbar gelagert ist, an deren Umfang er in geschlossener Stellung an einer Dichtkante anliegt, und wobei in der Brandmauer seitlich von der Durchtrittsöffnung eine durch eine Querwand von der Durchrittsöffnung getrennte Kammer vorgesehen ist, in der der Antrieb für den Klappenflügel untergebracht ist, wobei in der Querwand eine die Durchtrittsöffnung und die Kammer verbindende Lagerbuchse eingelassen ist.The invention relates to a firewall with a fire-resistant lockable passage opening, in particular for ducts of ventilation and air conditioning systems, a fire-resistant flap wing provided with a drive, at least partially recessed, inserted in the passage opening and rotatably mounted, on the circumference of which it is in closed position rests against a sealing edge, and wherein in the firewall to the side of the passage opening there is a chamber separated from the passage opening by a transverse wall, in which the drive for the flap wing is accommodated, a bearing bush connecting the passage opening and the chamber in the transverse wall is let in.

Brandmauern mit Brandschutzklappen der eingangs genannten Art sind bekannt (siehe z. B. DE-A-2 259 656). Bei dieser Klappenkonstruktion für Durchtritte von Lüftungskanälen durch Brandmauern ist der Klappenflügel drehbar in einem Einbaugehäuse aus Blech gelagert, das im Bereich der Brandmauer als Kanalstück in den Lüftungskanal eingesetzt wird, wobei der Klappenantrieb und eine Handeinstellvorrichtung außerhalb des Kanals von einer Seite her in die Brandmauer eingesetzt sind, jedoch zum Teil in einen der beiden Räume oder Brandabschnitte, die durch die Brandmauer voneinander getrennt werden, hineinragen.Firewalls with fire dampers of the type mentioned at the outset are known (see, for example, DE-A-2 259 656). In this damper design for the passage of ventilation ducts through firewalls, the damper wing is rotatably mounted in a sheet metal built-in housing that is inserted as a duct piece in the ventilation duct in the area of the firewall, the damper actuator and a manual adjustment device being inserted outside the duct into the firewall from one side are, but partially protrude into one of the two rooms or fire compartments that are separated by the firewall.

Bezüglich des Schutzes gegen eine Brandausbreitung lassen sich bei der Anordnung von bekannten Brandschutzklappen in Lüftungskanälen, bei denen der Klappenantrieb außerhalb des Kanals und mindestens teilweise außerhalb der Brandmauer in einem der beiden Räume oder Brandabschnitte, die durch die Brandmauer voneinander getrennt werden, liegt, drei verschiedene Fälle unterscheiden, für die diese Klappen einen unterschiedlichen Schutz gewähren.With regard to protection against the spread of fire, there are three different types of known fire dampers in ventilation ducts, in which the damper actuator is outside the duct and at least partially outside the firewall in one of the two rooms or fire sections that are separated by the firewall Differentiate cases for which these flaps provide different protection.

Fall ACase A

Der Brand breitet sich auf der Vorderseite der Klappe, d. h. auf der dem Antrieb abgewandten Seite, innerhalb oder außerhalb des Lüftungskanals aus; für diesen Fall bietet die bekannte Klappenkonstruktion ausreichenden Schutz.The fire spreads to the front of the flap, i.e. H. on the side facing away from the drive, inside or outside the ventilation duct; in this case, the well-known flap construction offers sufficient protection.

Fall BCase B

Der Brand breitet sich innerhalb des Kanals von der Rückseite der Klappe her aus; da der Antrieb, der z. B. Hebel, Wellen, Federn sowie ein pneumatisches System mit mindestens einem Zylinder und einem Kolben oder ein elektrisches System enthält, der Brandhitze zunächst indirekt und nach Zerstörung des Klappengehäuses dem Feuer direkt ausgesetzt ist, ist die erforderliche Betriebssicherheit bei den bekannten Klappen nicht mehr gegeben.The fire spreads inside the channel from the back of the flap; since the drive, the z. B. levers, shafts, springs and a pneumatic system with at least one cylinder and a piston or an electrical system that is initially exposed to fire heat indirectly and after destruction of the valve body, the required operational safety is no longer given in the known flaps .

Fall CCase C

Das Feuer breitet sich auf der Rückseite außerhalb des Lüftungskanals aus; die Klappe gewährt keinen hinreichenden Brandschutz, da der Antrieb und das Klappengehäuse durch Hitze und direkte Feuereinwirkung funktionsunfähig werden.The fire spreads on the back outside the ventilation duct; the flap does not provide adequate fire protection, since the actuator and the flap housing become inoperable due to heat and direct fire.

Die bekannten Anordnungen haben daher - je nachdem, ob Brandschutz in Richtung von der Vorderseite der Klappe her in den Raum, in dem die Klappenrückseite liegt, gefordert wird oder umgekehrt - unterschiedlich hohe Feuerbeständigkeiten. Für einen in beiden Richtungen gleichen vorgeschriebenen Mindestwert der Feuerbeständigkeit müßten auf der Rückseite der Klappe bei den bisherigen Konstruktionen deshalb besondere Anstrengungen für den Schutz des Antriebs unternommen werden. Derartige Ausführungen sind konstruktionsbedingt mit Schwachstellen bezüglich Sicherheit behaftet, erfordern einen hohen Investitionsaufwand und haben einen großen Platzbedarf.The known arrangements therefore have - depending on whether fire protection in the direction from the front of the flap into the room in which the flap rear is located, or vice versa - different levels of fire resistance. For a prescribed minimum fire resistance value that is the same in both directions, special efforts would therefore have to be made to protect the drive on the back of the flap in the previous designs. Such designs are subject to security weaknesses due to their design, require a high level of investment and require a large amount of space.

Aufgabe der Erfindung ist es daher, eine Brandmauer mit einer Brandschutzklappe zu schaffen, bei der in beiden Richtungen die gleiche Feuerbeständigkeit ohne großen zusätzlichen Aufwand erreicht wird, d. h. die - einschließlich ihres Antriebs - hinsichtlich ihrer Feuerbeständigkeit oder Brandschutzwirkung symmetrisch zur Mitte der Brandmauer ausgebildet ist. Nach der vorliegenden Erfindung wird diese Aufgabe dadurch gelöst, daß die Querwand aus feuerbeständigem Material besteht und daß die Kammer sich mindestens über die ganze Dicke der Brandmauer erstreckt und nach außen, d. h. zu den durch die Brandmauer voneinander getrennten Brandabschnitten, durch lösbare Deckel abgedeckt ist, deren Feuerbeständigkeit je mindestens halb so groß wie diejenige der Brandmauer bzw. des Klappenflügels ist. Auf diese Weise ist der Antrieb ebenfalls vollständig in die Brandmauer integriert und durch die feuerbeständigen Deckel, deren Feuerbeständigkeit mit Vorteil für je einen Deckel sogar gleich derjenigen der Brandmauer ausgelegt wird, gegen Feuer von außen sicher geschützt, während die feuerbeständige Querwand Übergriffe eines Feuersvon der Durchtrittsöffnung her verhindert.The object of the invention is therefore to provide a fire wall with a fire damper in which the same fire resistance is achieved in both directions without much additional effort, d. H. which - including its drive - is symmetrical to the center of the firewall with regard to its fire resistance or fire protection effect. According to the present invention, this object is achieved in that the transverse wall consists of fire-resistant material and that the chamber extends at least over the entire thickness of the firewall and to the outside, i. H. to the fire sections separated by the firewall, is covered by removable covers, the fire resistance of which is at least half as large as that of the firewall or the flap wing. In this way, the drive is also fully integrated into the firewall and, thanks to the fire-resistant cover, whose fire resistance is advantageously designed for one cover even the same as that of the firewall, is reliably protected against fire from the outside, while the fire-resistant transverse wall encroaches on a fire from the passage opening prevented here.

Die neue Klappenanordnung besitzt darüber hinaus u. a. als weitere Vorteile: Ihre Funktionsfähigkeit und Wirksamkeit ist unabhängig von einem horizontalen oder vertikalen Einbau; sie ist einfach in der Herstellung und erfordert außerhalb der Brandmauer, abgesehen von den geringfügig hervorstehenden Deckeln, keinerlei Platz für zusätzliche feuerbeständige Abdeckungen des Antriebs.The new flap arrangement also has other advantages: Its functionality and effectiveness is independent of horizontal or vertical installation; it is simple to manufacture and, apart from the slightly protruding covers, does not require any outside the firewall Space for additional fire-resistant covers for the drive.

Obwohl die Querwand als einfacher Steg in die Brandmauer eingesetzt werden kann - wobei dann beispielsweise das eine Lager für den Klappenflügel bzw. Leitungszuführungen zum Antrieb in die Brandmauer selbst eingelassen sind -, ist es vorteilhaft, die Querwand in einen gehäuseartigen Rahmen zu integrieren, der als Ganzes in die von der Durchtrittsöffnung und der Kammer gebildete Ausnehmung einsetzbar ist. Dieser Rahmen kann dabei vorfabriziert, beispielsweise als ein Stück gegossen, oder aus einzelnen, horizontalen und vertikalen Teilwänden zusammengesetzt werden, die untereinander verschraubt oder verklebt werden.Although the transverse wall can be used as a simple web in the firewall - in which case, for example, the one bearing for the flap wing or line feeds for the drive are embedded in the firewall itself - it is advantageous to integrate the transverse wall in a housing-like frame, which as The whole can be inserted into the recess formed by the passage opening and the chamber. This frame can be prefabricated, for example cast as one piece, or assembled from individual, horizontal and vertical partial walls which are screwed or glued to one another.

Dabei lassen sich Wärmebrücken senkrecht zur Oberfläche der Brandmauer aus wärmeleitenden Metallen vermeiden, wenn die Querwand und/oder der Rahmen aus zwei voneinander getrennten Metallgerüsten bestehen, die mit einem Leichtbeton hoher Feuerbeständigkeit ausgegossen und dadurch wärmebrückenfrei miteinander verbunden sind. Eine Serienfabrikation für die vertikalen Wände des Rahmens läßt sich erheblich vereinfachen, wenn die der Querwand parallelen Außenwände des Rahmens mit der Lagerbüchse in der Querwand gleichartige und fluchtende Lagerbüchsen tragen. Die Lagerbüchse in der Außenwand auf der dem Antrieb abgewandten Seite der Querwand dient dann als zweites Lager für den Klappenflügel, während die Lagerbüchse in der anderen Außenwand für die Zuführung von Antriebs- und Steuerenergien, sowie für den Eintritt von Signalleitungen in die dem Antrieb enthaltende Kammer genutzt wird.In this case, thermal bridges perpendicular to the surface of the firewall made of heat-conducting metals can be avoided if the transverse wall and / or the frame consist of two separate metal frames, which are poured with a lightweight concrete with high fire resistance and are therefore connected to each other without thermal bridges. Series production for the vertical walls of the frame can be considerably simplified if the outer walls of the frame parallel to the transverse wall carry identical and aligned bearing bushes with the bearing bush in the transverse wall. The bearing bush in the outer wall on the side of the transverse wall facing away from the drive then serves as a second bearing for the flap wing, while the bearing bush in the other outer wall for the supply of drive and control energies and for the entry of signal lines into the chamber containing the drive is being used.

Der Hitzefluß durch den Klappenflügel hindurch läßt sich erheblich hemmen, wenn der Klappenflügel mindestens weitgehend metallfrei ist und aus einem feuerbeständigen Rahmen besteht, der auf beiden Seiten mit feuerbeständigen Platten abgedeckt und mit Mineralwolle gefüllt ist.The heat flow through the flap wing can be significantly inhibited if the flap wing is at least largely free of metal and consists of a fire-resistant frame that is covered on both sides with fire-resistant plates and filled with mineral wool.

Um Ungenauigkeiten des geometrischen Ortes der Lagerbüchsen in der Brandmauer, der Querwand und/oder den Außenwänden und/ oder Einbauungenauigkeiten der Querwand bzw. des Rahmens in die Brandmauer in gewissem Umfang ausgleichen zu können, ist es voreilhaft, wenn der Klappenflügel über voneinander getrennte Wellenzapfen in den Lagerbüchsen der Querwand und einer Außenwand über Pendelgleitlager gelagert ist, wobei die Wellenzapfen darüber hinaus im Innern des Klappenflügels über ein versetzt dazu angeordnetes Zwischenstück zueinander fluchtend gehalten sein können, zu dem die Wellenzapfen in Achsrichtung verschiebbar sind. Der Ersatz einer durchgehenden Welle durch zwei getrennte Wellenzapfen erschwert dabei wiederum den Hitzefluß, wobei das Zwischenstück die Zentrierung der Wellenzapfen zueinander übernimmt, jedoch zuläßt, daß sich die Wellenzapfen relativ zu ihm aufgrund unterschiedlicher Wärmebewegungen verschieben können.In order to be able to compensate to a certain extent for inaccuracies in the geometrical location of the bearing bushes in the firewall, the transverse wall and / or the outer walls and / or inaccuracies in the installation of the transverse wall or the frame in the firewall, it is advantageous if the flap wing is separated from one another by shaft journals the bearing bushes of the transverse wall and an outer wall is mounted on self-aligning slide bearings, the shaft journals also being able to be kept in alignment with one another in the interior of the flap wing by means of an offset piece, to which the shaft journals are displaceable in the axial direction. The replacement of a continuous shaft by two separate shaft journals in turn complicates the heat flow, the intermediate piece taking over the centering of the shaft journals relative to one another, but allowing the shaft journals to move relative to it due to different thermal movements.

Eine feuerbeständige Abdichtung des drehbaren Klappenflügels gegenüber den feststehenden Wänden läßt sich im Bereich der Welle des Klappenflügels konstruktiv sicher und einfach dadurch bewerkstelligen, daß die Welle des Klappenflügels im Spalt zwischen dem Klappenflügel und der Außen- bzw. Querwand durch einen mit dem Klappenflügel verbundenen Filz aus feuerbeständigem Material geschützt ist, der auf einer feuerbeständigen Abdeckung für die in die Wände eingelassenen Lagerbüchsen gleitet. Bei Brandschutzklappen, die in Lüftungskanäle eingebaut sind, kann darüber hinaus weiterhin die Maßnahme getroffen sein, daß der Klappenflügel im offenen Zustand zwischen strömungsführenden Einbauten in dem Lüftungskanal gelagert ist. Der Klappenflügel kann symmetrisch zu den Oberflächen der Brandmauer im Zentrum der Querwand bzw. des Rahmens angeordnet sein.A fire-resistant seal of the rotatable flap wing against the fixed walls can be achieved in the area of the shaft of the flap wing in a structurally safe and simple manner by making the shaft of the flap wing in the gap between the flap wing and the outer or transverse wall by a felt connected to the flap wing fire-resistant material is protected, which slides on a fire-resistant cover for the bearing bushes embedded in the walls. In the case of fire dampers which are installed in ventilation ducts, the measure can also be taken in such a way that the flap wing is mounted in the open state between flow-carrying internals in the ventilation duct. The flap wing can be arranged symmetrically to the surfaces of the firewall in the center of the transverse wall or the frame.

Um auf dem ganzen Umfang ein dichtes Anliegen des geschlossenen Klappenflügels an der Dichtkante zu gewährleisten, ist es vorteilhaft, wenn die Dichtung am Umfang der Durchtrittsöffnung in Richtung auf den Klappenflügel zustellbar ist.In order to ensure that the closed flap wing lies tightly against the sealing edge over the entire circumference, it is advantageous if the seal on the circumference of the passage opening can be set in the direction of the flap wing.

.Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung näher erläutert.

  • Fig. 1 zeigt schematisch in einer Ansicht eine Brandmauer nach der Erfindung mit einer eingebauten Brandschutzklappe;
  • Fig. 2 und 3 sind die Schnitte 11-11 und 111-111 von Fig. 1;
  • Fig. 4 gibt den Schnitt IV-IV von Fig. 1 durch die Querwand wieder;
  • Fig. 5 stellt den Rahmen für die in Fig. 2 im Schnitt gezeigte Konstruktion eines Klappenflügels dar;
  • Fig. 6 zeigt in größerem Maßstab ein Detail aus Fig. 1 und ist ein Schnitt VI-VI von Fig. 7;
. The invention is explained in more detail below using an exemplary embodiment in conjunction with the drawing.
  • Fig. 1 shows schematically in a view a fire wall according to the invention with a built-in fire damper;
  • Figures 2 and 3 are sections 11-11 and 111-111 of Figure 1;
  • Fig. 4 shows the section IV-IV of Fig. 1 through the transverse wall;
  • Fig. 5 shows the frame for the construction of a flap wing shown in section in Fig. 2;
  • Fig. 6 shows on a larger scale a detail from Fig. 1 and is a section VI-VI of Fig. 7;

diese schließlich ist der Schnitt VII-VII von Fig. 6.this is finally the section VII-VII of FIG. 6.

Die Brandschutzklappe ist in dem gezeigten Ausführungsbeispiel zum Verschließen einer Durchtrittsöffnung 1 eines Lüftungskanals 2 (Fig. 2) bestimmt, in dem strömungsleitende Einbauten 3 vorgesehen sind, zwischen denen der Klappenflügel 4 in Offenstellung strömungsgünstig plaziert ist. Sie ist in einer Brandmauer 5 angeordnet, in der eine Ausnehmung vorgesehen ist, die relativ zur Durchtrittsöffnung 1 nach drei Seiten - in Fig. 1 nach rechts, oben und unten - um die Breite eines Rahmens 6 erweitert ist; auf der vierten Seite, d. h. in Fig. 1 nach links, ist die Durchtrittsöffnung 1 durch eine Querwand 8 begrenzt, hinter der eine Kammer 7 zur Aufnahme des Antriebs für den Klappenflügel 4 vorgesehen ist.In the exemplary embodiment shown, the fire damper is intended for closing a passage opening 1 of a ventilation duct 2 (FIG. 2), in which flow-conducting internals 3 are provided, between which the flap wing 4 is placed in an open position in a flow-favorable manner. It is arranged in a firewall 5, in which a recess is provided, which is extended relative to the passage opening 1 on three sides - to the right, up and down in FIG. 1 - by the width of a frame 6; on the fourth page, d. H. 1 to the left, the passage opening 1 is delimited by a transverse wall 8, behind which a chamber 7 is provided for receiving the drive for the flap wing 4.

Die beiden seitlichen Begrenzungen der Ausnehmung bilden vertikale Außenwände 9; die Querwand 8 und die Außenwände 9 sind oben durch einen Sturz 10a und unten durch ein Sims 10b horizontal zu dem in die Ausnehmung eingesetzten Rahmen 6 zusammengefügt, z. B. zusammengeschraubt.The two lateral boundaries of the recess form vertical outer walls 9; the transverse wall 8 and the outer walls 9 are joined horizontally at the top by a lintel 10a and at the bottom by a ledge 10b to form the frame 6 inserted into the recess, e.g. B. screwed together.

Der lediglich schematisch angedeutete Antrieb besteht aus einem in der Kammer 7 am Sturz 10a des Rahmens 6 aufgehängten Druckluftzylinder 11, zu dem Druckmittel über eine Leitung 12 zugeführt wird. Mit dem Klappenflügel 4 ist der Druckluftzylinder 11 über eine Kolbenstange 13 verbunden (Fig. 3), die über eine Achse 18 mit ihrem Ende an einem gabelförmigen Hebel 14 angreift; dieser ist seinerseits Teil einer Nabe 15, die auf einem Wellenzapfen 16 des Klappenflügels 4 sitzt.The drive, which is only indicated schematically, consists of a compressed air cylinder 11 suspended in the chamber 7 at the lintel 10a of the frame 6, to which pressure medium is supplied via a line 12. With the flap wing 4, the compressed air cylinder 11 is connected via a piston rod 13 (FIG. 3) which engages with its end on a fork-shaped lever 14 via an axis 18; this in turn is part of a hub 15 which sits on a shaft journal 16 of the flap 4.

In die vertikalen Wände 8 und 9 sind in der Mitte Lagerbüchsen 17 eingesetzt; in der Lagerbüchse 17 der rechten Außenwand 9 in Fig. 1 und in derjenigen der Querwand 8 sind die Wellenzapfen 16 des Klappenflügels 4 in einer noch näher zu beschreibenden Weise gelagert, während die Lagerbüchse 17 in der linken Außenwand 9 als Eintrittsöffnung in die Kammer 7 für die Druckmittelleistung 12 dient. Die Zuführung der Druckmittelleitung 12 - und ebenso von nicht dargestellten Steuer- und Signalleitungen - zur Lagerbüchse 17 der linken Außenwand 9 erfolgt durch ein in der Brandmauer verlegtes Kunststoffrohr 19, wie es für die Führung von nachträglich einzuziehenden Leitungen in Betonwänden üblich ist.In the vertical walls 8 and 9 bearing bushes 17 are inserted in the middle; in the bearing bush 17 of the right outer wall 9 in Fig. 1 and in that of the transverse wall 8, the shaft journals 16 of the flap wing 4 are mounted in a manner to be described in more detail, while the bearing bush 17 in the left outer wall 9 as an entry opening into the chamber 7 for the pressure medium power 12 is used. The supply of the pressure medium line 12 - and likewise of control and signal lines, not shown - to the bearing bush 17 of the left outer wall 9 takes place through a plastic pipe 19 laid in the firewall, as is customary for the guidance of lines to be subsequently pulled into concrete walls.

Nach außen ist die Kammer 7 auf beiden Seiten durch Deckel 20 abgedeckt, die im Rahmen 6, beispielsweise mit Hilfe von Schrauben 21, befestigt werden. Die Deckel 20, die mindestens je die halbe - jedoch, wie erwähnt, vorteilhaft die gleiche - Feuerbeständigkeit wie die Brandmauer 5 bzw. der Klappenflügel 4 besitzen, bestehen beispielsweise aus schalenförmigen Blechen, die mit Mineralwolle gefüllt sind. Selbstverständlich können die Deckel 20 auch hinsichtlich ihrer Feuerbeständigkeit ähnlich wie der Klappenflügel 4 aufgebaut sein, dessen Aufbau noch ausführlicher beschrieben wird.To the outside, the chamber 7 is covered on both sides by covers 20 which are fastened in the frame 6, for example with the aid of screws 21. The covers 20, which each have at least half - but, as mentioned, advantageously the same - fire resistance as the firewall 5 or the flap wing 4, consist, for example, of shell-shaped sheets which are filled with mineral wool. Of course, with regard to their fire resistance, the covers 20 can also be constructed similarly to the flap 4, the construction of which is described in more detail.

Die Abdichtung des geschlossenen Klappenflügels 4 in Umfangsrichtung bewirken in der Durchtrittsöffnung 1 verlaufende Dichtungen 22, die in Fig. 1 auf der unteren Seite vor und auf der oberen Seite hinter dem Klappenflügel 4 angebracht sind. Ihr Aufbau wird in Verbindung mit Fig. 6 und 7 näher beschrieben.The sealing of the closed flap wing 4 in the circumferential direction brings about seals 22 running in the passage opening 1, which are attached in FIG. 1 on the lower side in front of and on the upper side behind the flap wing 4. Its structure is described in more detail in connection with FIGS. 6 and 7.

Der in die Ausnehmung der Brandmauer 5 eingesetzten Rahmen 6 ist so aufgebaut, daß Wärmebrücken in Richtungen senkrecht zur Brandmauer 5 - beispielsweise durch in dieser Richtung durchgehende Metallteile - möglichst vermieden sind. Die Teile des Rahmens 6, also die Wände 8 und 9, sowie die horizontalen Elemente 10a und 10b sind daher an ihren Schmalseiten durch miteinander nicht verbundene Metallgerüste 23 (Fig. 4) begrenzt, die mit einem Gußkörper 24 aus feuerfestem Leichtbeton ausgegossen und über Verankerungen 25 zusätzlich verankert sind. Von den Metallgerüsten 23 in den Gußkörper 24 hineinführende Streben 25a dienen der Befestigung von Ankerschienen 26, wie sie als Montageleisten in Betonkörpern üblich sind. In die Wände 8 und 9 sind zusätzlich die Lagerbüchsen 17 eingegossen.The frame 6 inserted into the recess of the firewall 5 is constructed in such a way that thermal bridges in directions perpendicular to the firewall 5 - for example by metal parts passing through in this direction - are avoided as far as possible. The parts of the frame 6, that is to say the walls 8 and 9, and the horizontal elements 10a and 10b are therefore delimited on their narrow sides by metal frameworks 23 (FIG. 4) which are not connected to one another and which are poured with a cast body 24 made of refractory lightweight concrete and via anchors 25 are additionally anchored. Struts 25a leading from the metal frames 23 into the cast body 24 serve to fasten anchor rails 26, as are customary as assembly strips in concrete bodies. The bearing bushes 17 are additionally cast into the walls 8 and 9.

Als tragendes Element des Klappenflügels 4 ist ein Rahmen 27 (Fig. 5) aus einem Asbestfaser-Werkstoff vorgesehen; in dem Rahmen 27 sind über mit ihm verschraubte Bandeisen 28 die Wellenzapfen 16 befestigt, mit denen der Klappenflügel 4 drehbar in den Lagerbüchsen 17 gelagert ist. Diese Wellenzapfen 16 werden relativ zueinander zentriert durch ein winkelförmiges Zwischenstück 29 (Fig. 2), welches mit den Wellenzapfen 16 durch beide Teile umschlingende Bänder 30 so verschiebbar verbunden ist, daß die Wellenzapfen 16 relativ zum Zwischenstück 29 ungehindert Wärmebewegungen ausführen können. Die Wellenzapfen 16, die Bandeisen 28, das Zwischenstück 29 und die Bänder 30 sind die einzigen Metallteile des Klappenflügels 4; abgesehen von den nach außen geführten Wellenzapfen 16 sind sie innerhalb des Rahmens 27, und daher weitgehend gegen Hitze abgeschirmt, angeordnet, wobei der Innenraum des Rahmens 27 zusätzlich mit Mineralwolle 31 gefüllt und außen durch Asbestplatten 32 abgedeckt ist (Fig. 2). Mit diesem Aufbau des Klappenflügels 4 sind auch in ihm Wärmebrücken weitgehend vermieden, weil zum einen der Metallanteil sehr gering ist und zum anderen keine durchgehenden Metallverbindungen senkrecht zu seiner Oberfläche vorhanden sind.A frame 27 (FIG. 5) made of an asbestos fiber material is provided as the load-bearing element of the flap wing 4; In the frame 27, the shaft journals 16 are fastened by means of band irons 28 screwed to it, with which the flap wing 4 is rotatably mounted in the bearing bushes 17. These shaft journals 16 are centered relative to one another by an angular intermediate piece 29 (FIG. 2) which is slidably connected to the shaft journals 16 by belts 30 wrapping around both parts in such a way that the shaft journals 16 can perform unhindered thermal movements relative to the intermediate piece 29. The shaft journals 16, the band irons 28, the intermediate piece 29 and the bands 30 are the only metal parts of the flap wing 4; apart from the externally guided shaft journals 16, they are arranged inside the frame 27, and therefore largely shielded from heat, the interior of the frame 27 being additionally filled with mineral wool 31 and covered on the outside by asbestos plates 32 (FIG. 2). With this construction of the flap wing 4, thermal bridges are largely avoided in it too, because on the one hand the metal content is very low and on the other hand there are no continuous metal connections perpendicular to its surface.

Die Wellenzapfen 16 für den Klappenflügel 4 sind in den Lagerbüchsen 17 über Pendelgleitlager 33 abgestützt, um, wie erwähnt, den Einfluß von Ungenauigkeiten in der Betonkonstruktion auf die Lagerung und Funktionsfähigkeit des Klappenflügels 4 zu vermindern. Den feststehenden Teil des Lagers 33 bildet ein Ring 34, der durch eine Distanzbüchse 35 gegen einen Absatz in der Lagerbüchse 17 gedrückt wird; er ist innen konkav kugelschalenförmig ausgebildet und nimmt einen zweiten Ring 36 auf, der auf dem Wellenzapfen 16 sitzt und außen gekrümmt ist. Die in Fig. 6 gezeigte Lagerbüchse 17, die in der rechten Außenwand 9 von Fig. 1 sitzt, ist nach außen zur Brandmauer 5 hin durch eine, beispielsweise eingelötete Deckscheibe 37 verschlossen.The shaft journals 16 for the flap wing 4 are supported in the bearing bushes 17 via spherical plain bearings 33 in order, as mentioned, to reduce the influence of inaccuracies in the concrete structure on the storage and functionality of the flap wing 4. The fixed part of the bearing 33 forms a ring 34 which is pressed by a spacer bush 35 against a shoulder in the bearing bush 17; it is concave in the shape of a spherical shell and receives a second ring 36 which sits on the shaft journal 16 and is curved on the outside. The bearing bush 17 shown in FIG. 6, which is seated in the right outer wall 9 of FIG. 1, is closed to the outside of the firewall 5 by a cover disk 37, for example soldered on.

Auf der anderen Seite, d. h. zur Durchtrittsöffnung 1 hin, ist die Lagerbüchse 17 durch eine Abdeckung 38 aus feuerbeständigem Material, beispielsweise Eternit, abgedeckt, die an der Außenwand 9 befestigt ist. Die Abdeckung 38 hat zumindest auf ihrer dem Klappenflügel 4 zugewandte Außenseite eine, relativ zum Beton des Rahmens 6, glatte Oberfläche; diese dient als Gleitfläche für einen am Klappenflügel 4 befestigten Filz 39 aus feuerbeständigem Material, beispielsweise aus Graphit. Der Filz 39, der in leicht zusammengepreßter Form zwischen dem Klappenflügel 4 und der Abdeckung 38 eingelegt ist, bewirkt zum einen eine feuerbeständige Abdichtung zwischen diesen, relativ zueinander bewegten Teilen und schützt zum anderen den Wellenzapfen 16 vor zu großer Erhitzung.On the other side, ie towards the passage opening 1, the bearing bush 17 is covered by a cover 38 made of fire-resistant material, for example Eternit, which is fastened to the outer wall 9. The cover 38 has at least on its outside facing the flap wing 4 a smooth surface relative to the concrete of the frame 6; this serves as a sliding surface for a felt 39 made of fire-resistant material, for example made of graphite, attached to the flap wing 4. The felt 39, which is inserted in a slightly compressed form between the flap 4 and the cover 38, on the one hand brings about a fire-resistant seal between these parts which are moved relative to one another and protects other the shaft journal 16 before overheating.

Wie bereits erwähnt, liegt der geschlossene Klappenflügel 4 an Dichtungen 22 an, die in Umfangsrichtung der Durchtrittsöffnung 1 verlaufen (Fig. 1). Als dichtendes Element enthalten die Dichtungen 22 eine verformbare, elastische Schnur 40 aus feuerfestem Material, beispielsweise aus einer Mineralwolle auf Silikatbasis; diese ist von einer Halterung 41 aus Blech längs des Umfanges der Durchtrittsöffnung 1 auf den Wänden des Rahmens 6 gehalten. Die Halterung 41 ist wegen der größeren Nachgiebigkeit gegen Wärmedehnungen stufenförmig und zur Erhöhung ihrer Stabilität an beiden Enden zu Schlaufen gebogen.As already mentioned, the closed flap wing 4 rests on seals 22 which run in the circumferential direction of the passage opening 1 (FIG. 1). As a sealing element, the seals 22 contain a deformable, elastic cord 40 made of refractory material, for example of a mineral wool based on silicate; this is held by a bracket 41 made of sheet metal along the circumference of the passage opening 1 on the walls of the frame 6. The bracket 41 is stepped because of the greater flexibility against thermal expansion and bent to increase its stability at both ends to form loops.

Während das eine Ende der Halterung 41 die Schnur 40 gegen die Wand 9 preßt, ist das andere Ende von Briden 42 gehalten, die über den Umfang der Durchtrittsöffnung 1 in den Ankerschienen 26 verteilt sind. Die Briden 42 haben ein Langloch 43 (Fig. 6), um für die Dichtschnur 40 eine Einstellung relativ zum oder eine Zustellung in Richtung auf den geschlossenen Klappenflügel 4 hin zu ermöglichen. Durch das Langloch 43 ragt zur Befestigung der Briden 42 in der Ankerschiene 26 eine Ankerschienenschraube 44, mit der die Bride 42 durch eine Unterlagscheibe 45 und eine Mutter 46 auf der Ankerschiene 26 festgeklemmt wird. Wie Fig. 6 zeigt, ragen die freien Enden der Dichtelemente 22 in Ausschnitte der Abdeckung 38, wobei die Verformbarkeit und die Elastizität der Dichtschnur 40 ihr stumpfes Anlegen an die Abdekkung 38 sowohl in Richtung ihrer - in Umfangsrichtung der Durchtrittsöffnung 1 verlaufenden - Längsrichtung als auch senkrecht dazu bei der Montage gestatten; auf diese Weise wird eine sichere Abdichtung zwischen den freien Enden der bei einer Drehklappe notwendigerweise nicht durchgehenden Dichtschnur 40 und dem Klappenflügel 4 bzw. seiner Welle gewährleistet.While one end of the holder 41 presses the cord 40 against the wall 9, the other end is held by clips 42, which are distributed over the circumference of the passage opening 1 in the anchor rails 26. The clips 42 have an elongated hole 43 (FIG. 6) in order to enable the sealing cord 40 to be adjusted relative to or infeed in the direction of the closed flap wing 4. An anchor rail screw 44 protrudes through the elongated hole 43 for fastening the clamps 42 in the anchor rail 26, with which the clamp 42 is clamped on the anchor rail 26 by a washer 45 and a nut 46. As shown in FIG. 6, the free ends of the sealing elements 22 protrude into cutouts of the cover 38, the deformability and the elasticity of the sealing cord 40 being butted against the cover 38 both in the direction of its longitudinal direction, which extends in the circumferential direction of the passage opening 1, and also allow perpendicular to it during assembly; In this way, a secure seal between the free ends of the sealing cord 40, which is not necessarily continuous in a rotary flap, and the flap wing 4 or its shaft is ensured.

Claims (10)

1. A fire-resistant wall (5) formed with a passage (1) closable in fire-resistant manner by a fire protection flap and of use more particularly for trunking (2) of ventilation and conditioning facilities, a fire-resistant lid (4) which has a drive (11 to 15) being received at least in a partly recessed manner and mounted for rotation in the passage (1), the lid (4) engaging by way of a sealing edge (22) with the passage periphery when in the closed position, a chamber (7) which is separated from the passage (1) by a cross-wall (8) being provided in the fire-resistant wall (5) laterally of the passage (1), such chamber receiving the drive (11-15) for the lid (4), the cross-wall receiving a bearing bush (17) interconnecting the passage (1) and the chamber (7), characterized in that the cross-wall (8) is made of a refractory substance and the chamber (7) extends at least over the whole thickness of the fire-resistant wall (5) and is covered on the outside - i. e., in relation to the portions of fire separated from one another by the refractory wall (5) - by releasable covers (20) whose fire resistance is in each case at least half that of the fire-resistant wall (5) or lid (4).
2. A fire-resistant wall according to claim 1, characterized in that the cross-wall (8) is integral with a casing-like frame (6) introducible as a whole into the recess bounded by the passage (1) and chamber (7).
3. A fire-resistant wall according to claim 1 or 2, characterized in that the cross-wall (8) and/or the frame (6) are/is embodied by two separate metal frames (23) which are potted in a high-refractory lightweight concrete (24) and thus interconnected without the presence of heat bridges.
4. A wall according to claim 1, characterized in that the lid (4) is at least substantially free from metal and is embodied by a fire-resistant frame (27) covered on both sides with fire-resistant panels (32) and filled with mineral wool (31).
5. A wall according to claim 1, characterized in that the lid (4) is mounted by way of separate journals (16) in bearing bushes (17) of the cross-wall (8) and of an outside wall (9) by way of self-aligning plain bearings (33).
6. A wall according to claim 5, characterized in that the journals (16) are retained in registration with one another inside the lid (4) by way of an intermediate element (29) which is offset from the lid (4) and in relation to which the journals (16) are movable axially.
7. A wall according to claim 1, characterized in that the shaft of the lid (4) is protected in the gap between the same and the outside wall (9) or cross-wall (8) by a fire-resistant felt (39) which is connected to the lid (4) and which slides on a fire-resistant covering (38) for the bearing bushes (17) in the walls (8, 9).
8. A wall according to claim 1 for ventilation trunking, characterized in that the lid (4) is mounted when open between flow-guiding elements (3) in the ventilation trunk (2).
9. A wall according to claim 1 or 2, characterized in that the lid (4) is disposed at the centre of the cross-wall (8) or frame (6) symmetrically of the surfaces of the wall (5).
10. A wall according to claim 1, characterized in that the seal (22) on the periphery of the passage (1) can be fed towards the lid (4).
EP80102177A 1979-07-03 1980-04-23 Fire wall Expired EP0020921B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80102177T ATE3000T1 (en) 1979-07-03 1980-04-23 FIRE WALL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH619379 1979-07-03
CH6193/79 1979-07-03

Publications (2)

Publication Number Publication Date
EP0020921A1 EP0020921A1 (en) 1981-01-07
EP0020921B1 true EP0020921B1 (en) 1983-04-13

Family

ID=4305728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102177A Expired EP0020921B1 (en) 1979-07-03 1980-04-23 Fire wall

Country Status (5)

Country Link
EP (1) EP0020921B1 (en)
AT (1) ATE3000T1 (en)
DE (1) DE3062698D1 (en)
DK (1) DK276580A (en)
ES (1) ES8102822A1 (en)

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WO2004072531A1 (en) * 2003-02-11 2004-08-26 Truss Holdings Pty. Ltd. Damper with rotary valve

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FR2717088B1 (en) * 1994-03-09 1996-04-19 Vraco Sa Fire damper.
RU2742387C1 (en) * 2020-04-27 2021-02-05 Геннадий Петрович Касперович Fire-prevention valve

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FR2110535A5 (en) * 1970-10-21 1972-06-02 Etu Rech Ventil Aerau
DE2259656A1 (en) * 1972-12-01 1974-06-20 Nordluft Norddeutsche Ges Fuer WITH A PIVOTING FIRE PROTECTION FLAP EQUIPPED WITH A CLOSING FORCE FOR VENTILATION SYSTEMS
DE2554211A1 (en) * 1975-12-02 1977-06-08 Mabag Luft & Klimatechnik Fire damper for ventilation ducting - has fusible plug holding sprung cranked lever for automatic or manual operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004072531A1 (en) * 2003-02-11 2004-08-26 Truss Holdings Pty. Ltd. Damper with rotary valve

Also Published As

Publication number Publication date
EP0020921A1 (en) 1981-01-07
ATE3000T1 (en) 1983-04-15
ES491880A0 (en) 1981-02-16
DK276580A (en) 1981-01-04
ES8102822A1 (en) 1981-02-16
DE3062698D1 (en) 1983-05-19

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