EP0447944A1 - Fire protection flap - Google Patents

Fire protection flap Download PDF

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Publication number
EP0447944A1
EP0447944A1 EP91103869A EP91103869A EP0447944A1 EP 0447944 A1 EP0447944 A1 EP 0447944A1 EP 91103869 A EP91103869 A EP 91103869A EP 91103869 A EP91103869 A EP 91103869A EP 0447944 A1 EP0447944 A1 EP 0447944A1
Authority
EP
European Patent Office
Prior art keywords
flap wing
fire damper
frame
damper according
flap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91103869A
Other languages
German (de)
French (fr)
Other versions
EP0447944B1 (en
Inventor
Gottfried Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schako KG
Original Assignee
Schako Metallwarenfabrik Ferdinand Schad KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schako Metallwarenfabrik Ferdinand Schad KG filed Critical Schako Metallwarenfabrik Ferdinand Schad KG
Publication of EP0447944A1 publication Critical patent/EP0447944A1/en
Application granted granted Critical
Publication of EP0447944B1 publication Critical patent/EP0447944B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F24F13/1406Air-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • F24F11/33Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F24F11/35Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages

Definitions

  • the invention relates to a fire damper consisting of a frame with an air passage opening and a flap wing arranged in the frame, which is adapted approximately to the cross section of the frame.
  • Such fire dampers are commercially available in a variety of forms. They are usually integrated in an air duct system, for example in an air conditioning system, and serve to block the air duct in this system in the event of a fire, so that a fire in a room no longer receives food and, on the other hand, a fire does not spread the air duct system can spread to other rooms.
  • the flap In normal operation of the air duct system, the flap is in the open position, i.e. usually tilted in the direction of air flow. For this reason, such flap vanes usually have axially penetrating axle shafts around which the flap vanes rotate.
  • other articulations of the flap wing are also conceivable here and are intended to be encompassed by the present invention.
  • the flap is usually held in the open position by a fusible link or the like.
  • a fusible link or the like When elevated temperatures occur, usually above 72 ° C, this solder melts and releases a mechanism by which the flap wing is turned in the closed position. So that the flap wing can optimally perform its function in this closed position, the flap wing must be adequately sealed from the frame. This seal represents a major problem, especially since the flap wing curls as the temperature rises, thus enlarging an existing edge gap between the frame and the flap wing.
  • the inventor has set itself the goal of developing a fire damper of the type mentioned above, in which an optimal sealing of the air passage openings is achieved by the flap wing in the event of a fire.
  • the edge of the flap wing is at least partially covered with a sealing element or material that expands or foams at elevated temperature and / or the flap wing is assigned at least one stop angle in its closed position, which at least partially seals the flap wing to the frame.
  • the sealing material for the edge of the flap wing relative to the frame is primarily a plastic material which begins to foam at elevated temperatures and thus closes the gap between the flap wing and frame. It is preferred that this sealing material is embedded on the edge in corresponding receiving grooves in the flap wing. As a result, the sealing material does not interfere with the normal operation of the flap wing.
  • the receiving groove is formed by a cross-sectionally U-shaped profile strip, which then forms the peripheral edge of the flap wing.
  • This profile strip also facilitates the assembly of the flap wing, since, for example, a groove can be formed on the lateral legs of the U-shaped profile strips, into which a corresponding front or back plate of the flap wing is inserted. In this way, a hollow flap wing is obtained, which can then be filled with appropriate insulating material, which can withstand elevated temperatures and also counteracts deformation of the flap wing.
  • the foaming or expanding sealing element or material is covered by a rail. If the material lies in the receiving channel, this rail should be U-shaped in cross section and should be able to be inserted into the receiving channel. If the material then expands, it presses the rail against the frame and thus closes the gap between the flap wing and the frame.
  • the flap wing is at least partially covered with a reinforcing strip on the edge.
  • This reinforcing strip is expediently located under the sealing element or material.
  • a suitable thickness is selected for the reinforcement strip so that arching of the flap wing is counteracted.
  • reinforcement strips of this type are in any case arranged on the edge, so that the axle shaft has a corresponding holder.
  • a profile is stamped around the flap wing in the closed position in the frame.
  • This profile can be directed outwards so that the expanding or foaming material or the rail slides into a corresponding channel.
  • the profiling takes place from the outside, so that the frame raises a wall inwards, against which the rail then strikes and against which the rail rests in a sealing manner.
  • stop brackets hold additional sealing elements or materials that expand or foam especially in the event of a fire. This ensures a further very good sealing of the gap between the flap wing and the frame in the closed position of the flap wing.
  • the stop brackets form a circumferential channel which is assigned to the gap between the flap wing and the frame. Furthermore, this channel should preferably be filled with two different sealing materials.
  • One, namely the upper sealing material consists, for example, of normal sealing strips, which also enable a certain sealing of the flap wing in normal operation. Even in normal operation, the flap is closed under certain circumstances, these sealing strips then take over the appropriate sealing.
  • a fire damper R consists of a frame 1 which forms a square housing for a damper wing 5.
  • Side strips 2 are folded on all sides of the frame 1.
  • two side strips 2 are connected by screws, rivets 3 or the like with fastening angles 4.
  • fastening angles 4 For fastening the frame 1 to channels of an air guidance system, not shown in detail, these fastening angles 4 each have an elongated hole 6 in their corner regions.
  • a circumferential profiling which has a U-shaped shape, is formed approximately in the center of the frame 1. This profiling creates a groove 7 in the frame 1 at the top and bottom, since it points outwards, while it is directed laterally inwards and thus forms a wall 8.
  • the flap wing 5 is supported in these side walls 8.
  • bearing sleeves 13 are formed out of the side walls 8 according to FIG. 4, which encompass corresponding bearing shells 14.
  • the bearing shells 14 are penetrated by an axle shaft 12 which rotates in these bearing shells 14.
  • the axle shaft 12 is rectangular in cross section, so that when it rotates about the axis A of the flap 5 can be moved in the direction z.
  • an adjusting lever 15 On the right side of the axle shaft 12, an adjusting lever 15 is pushed on and connected to the axle shaft 12 in a rotationally fixed manner via a pin 16.
  • This control lever 15 is attacked by a spring 17, which causes the flap leaf 5 to be rotated in the closed position via the control lever 15.
  • the adjusting lever 15 In the open position, the adjusting lever 15 is held by a fusible link, not shown, so that the flap wing 5 is open. Only when this fusible link breaks as a result of an increase in temperature, in particular above 72 ° C., does the axle shaft 12 rotate counter to the direction of rotation z, which is done by actuating the actuating lever 15 by means of the spring 17.
  • Both the control lever 15 and the opposite bearing of the axle shaft 12 are provided with a cover 18 and 19, respectively.
  • the flap wing 5 itself consists of sheet steel plates 9, between which an insulation, for example made of glass fiber material 10, rock wool material, plaster 11 or another insulating material, is arranged.
  • the sheet steel plates 9 are kept at a distance from one another by circumferential profile strips 20.
  • Each profile strip 20 is U-shaped, the respective lateral legs of the U forming a groove 21 for the steel sheet plates 9 by means of an envelope. In this way, the profile strips 20 encompass the sheet steel plates 9 with their side legs and form a receiving groove 22 on the outside (see FIG. 3).
  • a reinforcing strip 23 is inserted, which has sufficient strength so that it can serve as a stiffening of the flap wing 5. It is also used for storage, i.e. the mounting of the axle shaft 12. For this purpose, it should be advisable to fix the reinforcing bar 23 in the receiving groove 22.
  • the receiving channel 22 is covered by an inserted rail 24, which rail 24 also overlaps the reinforcing strip 23.
  • a material 26 which foams under the influence of temperature.
  • the flap wing 5 is closed when a certain temperature is exceeded. Due to the effect of temperature, the material 26 foams and presses the rail 24 outwards, laterally against the ramparts 8 and up and down into the channel 7 in each case. A very good seal is thereby already achieved.
  • the flap wing 5 is assigned a stop bracket 27 in the upper region.
  • Another stop bracket 28 is located behind the flap wing 5 in the lower region.
  • Each of these stop angles 27 and 28 is U-shaped and has a longitudinal strip 29 and two side strips 30 and 31. In cross-section, the stop angles 27 and 28 are step-shaped, as can be seen in particular in FIG.
  • an edge-side channel 32 is formed towards the frame 1, which is used to hold sealing material 33.
  • Two different types of sealing materials are preferably located in the channel 32, a sealing material being arranged in front of the flap wing 5. This sealing material seals very well when cold and consists, for example, of conventional sealing strips, especially of abrasion-resistant material. Additional sealing material, for example also as a strip, is installed behind these sealing strips, these sealing materials, however, only foaming when a certain temperature is reached and thus pressing the preceding sealing material against the flap wing 5. This results in an additional sealing of the flap wing 5.
  • the tightness is further increased by the fact that the sealing material located in the channels 32 surrounds the bends of the profile strips 20, which comprise the sheet steel plates 9, and penetrates into the areas between the wall and the flap wing.

Abstract

In a fire protection flap comprising a frame (1) with an air penetration opening and a pivoting flap (5) located in the frame (1), which flap is adjusted more or less to fit the cross-section of the frame (1), the pivoting flap (5) should be provided at least partially with a sealing element or material (26) at the edge which expands or foams at increased temperature. Furthermore at least one stop bracket (27 or 28) is allocated to the pivoting flap (5) in its closed position, which at least partially seals the pivoting flap (5) from the frame (1). <IMAGE>

Description

Die Erfindung betrifft eine Brandschutzklappe aus einem Rahmen mit einer Luftdurchlaßöffnung und einem in dem Rahmen angeordneten Klappenflügel, welcher in etwa dem Querschnitt des Rahmens angepaßt ist.The invention relates to a fire damper consisting of a frame with an air passage opening and a flap wing arranged in the frame, which is adapted approximately to the cross section of the frame.

Derartige Brandschutzklappen sind in vielfältiger Form im Handel. Sie sind in der Regel in einem Luftführungssystem, beispielsweise in einer Klimaanlage, integriert und dienen dazu, im Falle eines Brandes die Luftführung in diesem System zu unterbinden, damit zum einen ein Feuer in einem Raum keine Nahrung mehr erhält und zum anderen ein Feuer nicht über das Luftführungssystem in andere Räumlichkeiten übergreifen kann.Such fire dampers are commercially available in a variety of forms. They are usually integrated in an air duct system, for example in an air conditioning system, and serve to block the air duct in this system in the event of a fire, so that a fire in a room no longer receives food and, on the other hand, a fire does not spread the air duct system can spread to other rooms.

Im normalen Betrieb des Luftführungssystems befindet sich der Klappenflügel in geöffneter Lage, d.h. in der Regel gekippt in Luftströmungsrichtung. Deshalb besitzen derartige Klappenflügel meist mittig sie durchsetzende Achswellen, um die der Klappenflügel dreht. Jedoch sind hier auch andere Anlenkungen des Klappenflügels denkbar und sollen von der vorliegenden Erfindung umfaßt sein.In normal operation of the air duct system, the flap is in the open position, i.e. usually tilted in the direction of air flow. For this reason, such flap vanes usually have axially penetrating axle shafts around which the flap vanes rotate. However, other articulations of the flap wing are also conceivable here and are intended to be encompassed by the present invention.

Der Klappenflügel wird in der Regel durch ein Schmelzlot od. dgl. Brandschutzsicherung in Öffnungslage gehalten. Beim Auftreten erhöhter Temperaturen, meist über 72°C, schmilzt dieses Lot und gibt eine Mechanik frei, durch welche der Klappenflügel in Schließlage gedreht wird. Damit der Klappenflügel in dieser Schließlage seine Funktion optimal erfüllen kann, muß eine genügende Abdichtung des Klappenflügels gegenüber dem Rahmen erfolgen. Diese Abdichtung stellt ein wesentliches Problem dar, zumal sich bei ansteigenden Temperaturen der Klappenflügel wellt und so ein vorhandener Randspalt zwischen Rahmen und Klappenflügel vergrößert wird.The flap is usually held in the open position by a fusible link or the like. When elevated temperatures occur, usually above 72 ° C, this solder melts and releases a mechanism by which the flap wing is turned in the closed position. So that the flap wing can optimally perform its function in this closed position, the flap wing must be adequately sealed from the frame. This seal represents a major problem, especially since the flap wing curls as the temperature rises, thus enlarging an existing edge gap between the frame and the flap wing.

Der Erfinder hat sich zum Ziel gesetzt, eine Brandschutzklappe der oben genannten Art zu entwickeln, bei welcher im Brandfall eine optimale Abdichtung der Luftdurchlaßöffnungen durch den Klappenflügel erzielt wird.The inventor has set itself the goal of developing a fire damper of the type mentioned above, in which an optimal sealing of the air passage openings is achieved by the flap wing in the event of a fire.

Zur Lösung dieser Aufgabe führt, daß der Klappenflügel randseitig zumindest teilweise mit einem sich bei erhöhter Temperatur ausdehnenden oder aufschäumenden Dichtelement oder -material belegt und/oder dem Klappenflügel in seiner Schließlage zumindest ein Anschlagwinkel zugeordnet ist, welcher den Klappenflügel zum Rahmen hin zumindest teilweise abdichtet.To achieve this object, the edge of the flap wing is at least partially covered with a sealing element or material that expands or foams at elevated temperature and / or the flap wing is assigned at least one stop angle in its closed position, which at least partially seals the flap wing to the frame.

Sowohl die eine Abdichtungsmaßnahme durch den Klappenflügel selbst wie auch die andere Abdichtung durch Anschlagwinkel bringt schon eine erhebliche Verbesserung der Dichthaltung im Brandfall. Besonders wirkungsvoll ist selbstverständlich eine Kombination beider Abdichtungsmaßnahmen.Both the one sealing measure by the flap wing itself and the other sealing by means of the stop bracket already bring about a considerable improvement in sealing in the event of a fire. A combination of both sealing measures is of course particularly effective.

Als Dichtmaterial für den Rand des Klappenflügels gegenüber dem Rahmen kommt vor allem ein Kunststoffmaterial in Frage, welches bei erhöhten Temperaturen aufzuschäumen beginnt und damit den Spalt zwischen Klappenflügel und Rahmen schließt. Bevorzugt wird dabei, daß dieses Dichtmaterial randseitig in entsprechende Aufnahmerinnen in dem Klappenflügel eingebettet ist. Hierdurch stört das Dichtmaterial beim normalen Betrieb des Klappenflügels nicht.The sealing material for the edge of the flap wing relative to the frame is primarily a plastic material which begins to foam at elevated temperatures and thus closes the gap between the flap wing and frame. It is preferred that this sealing material is embedded on the edge in corresponding receiving grooves in the flap wing. As a result, the sealing material does not interfere with the normal operation of the flap wing.

In einer Ausführungsform der Erfindung wird die Aufnahmerinne von einer querschnittlich U-förmigen Profilleiste gebildet, welche dann den umlaufenden Rand des Klappenflügels bildet. Durch diese Profilleiste ist auch der Zusammenbau des Klappenflügels erleichtert, da beispielsweise durch einen Umschlag an den seitlichen Schenkeln der U-förmigen Profilleisten eine Nut ausgebildet werden kann, in welche eine entsprechende Front- bzw. Rückenplatte des Klappenflügels eingesetzt wird. Auf diese Weise erhält man einen hohlen Klappenflügel, der dann mit entsprechendem Isoliermaterial gefüllt werden kann, welches erhöhten Temperaturen standhält und auch einem Verformen des Klappenflügels entgegenwirkt.In one embodiment of the invention, the receiving groove is formed by a cross-sectionally U-shaped profile strip, which then forms the peripheral edge of the flap wing. This profile strip also facilitates the assembly of the flap wing, since, for example, a groove can be formed on the lateral legs of the U-shaped profile strips, into which a corresponding front or back plate of the flap wing is inserted. In this way, a hollow flap wing is obtained, which can then be filled with appropriate insulating material, which can withstand elevated temperatures and also counteracts deformation of the flap wing.

In einem bevorzugten Ausführungsbeispiel wird das aufschäumende bzw. sich ausdehnende Dichtelement bzw. -material von einer Schiene überdeckt. Liegt das Material in der Aufnahmerinne, so sollte diese Schiene querschnittlich U-förmig ausgebildet sein und in die Aufnahmerinne eingesetzt werden können. Dehnt sich dann das Material aus, preßt es die Schiene gegen den Rahmen und schließt so den Spalt zwischen Klappenflügel und Rahmen.In a preferred embodiment, the foaming or expanding sealing element or material is covered by a rail. If the material lies in the receiving channel, this rail should be U-shaped in cross section and should be able to be inserted into the receiving channel. If the material then expands, it presses the rail against the frame and thus closes the gap between the flap wing and the frame.

Des weiteren ist vorgesehen, daß der Klappenflügel zumindest teilweise randseitig mit einer Verstärkungsleiste belegt ist. Diese Verstärkungsleiste liegt zweckmäßigerweise unter dem Dichtelement bzw. -material. Für die Verstärkungsleiste wird eine geeignete Dicke gewählt, damit einem Wölben des Klappenflügels entgegengewirkt wird. Im Falle der Anordnung einer Mittelachse, um welche der Klappenflügel dreht, sind derartige Verstärkungsleisten auf jeden Fall randseitig angeordnet, damit die Achswelle eine entsprechende Halterung hat.Furthermore, it is provided that the flap wing is at least partially covered with a reinforcing strip on the edge. This reinforcing strip is expediently located under the sealing element or material. A suitable thickness is selected for the reinforcement strip so that arching of the flap wing is counteracted. In the case of the arrangement of a central axis, around which the flap wing rotates, reinforcement strips of this type are in any case arranged on the edge, so that the axle shaft has a corresponding holder.

Weiterhin ist bevorzugt vorgesehen, daß in den Rahmen eine Profilierung um den Klappenflügel in Schließlage herum eingeprägt ist. Diese Profilierung kann nach außen gerichtet sein, so daß das sich ausdehnende bzw. auf schäumende Material bzw. die Schiene in eine entsprechende Rinne eingleitet. Es kann sich aber auch beispielsweise seitlich als günstig erweisen, wenn die Profilierung von außen her erfolgt, so daß der Rahmen nach innen einen Wall aufwirft, gegen den dann die Schiene anschlägt und dem die Schiene abdichtend anliegt. Hier sollen alle möglichen Varianten vom Erfindungsgedanken umfaßt sein.Furthermore, it is preferably provided that a profile is stamped around the flap wing in the closed position in the frame. This profile can be directed outwards so that the expanding or foaming material or the rail slides into a corresponding channel. However, it can also prove to be advantageous laterally, for example, if the profiling takes place from the outside, so that the frame raises a wall inwards, against which the rail then strikes and against which the rail rests in a sealing manner. Here, all possible variants are intended to be encompassed by the inventive concept.

Die besondere Fuktion der Anschlagwinkel besteht darin, daß sie weitere Dichtelemente oder -materialien halten, die sich insbesondere im Brandfall ausdehnen bzw. aufschäumen. Damit wird eine weitere sehr gute Abdichtung des Spaltes zwischen Klappenflügel und Rahmen in Schließlage des Klappenflügels gewährleistet.The special function of the stop brackets is that they hold additional sealing elements or materials that expand or foam especially in the event of a fire. This ensures a further very good sealing of the gap between the flap wing and the frame in the closed position of the flap wing.

Zur Einlagerung dieses Dichtungsmaterials bilden die Anschlagwinkel einen randseitig umlaufenden, dem Spalt zwischen Klappenflügel und Rahmen zugeordneten Kanal aus. Ferner soll dieser Kanal bevorzugt mit zwei unterschiedlichen Dichtmaterialien gefüllt sein. Das eine, und zwar das obere Dichtmaterial, besteht beispielsweise aus normalen Dichtstreifen, welche auch eine bestimmte Abdichtung des Klappenflügels im Normalbetrieb ermöglichen. Auch bei Normalbetrieb wird der Klappenflügel unter gewissen Umständen geschlossen, diese Dichtstreifen übernehmen dann die entsprechende Abdichtung.To store this sealing material, the stop brackets form a circumferential channel which is assigned to the gap between the flap wing and the frame. Furthermore, this channel should preferably be filled with two different sealing materials. One, namely the upper sealing material, consists, for example, of normal sealing strips, which also enable a certain sealing of the flap wing in normal operation. Even in normal operation, the flap is closed under certain circumstances, these sealing strips then take over the appropriate sealing.

Unter diesen Dichtstreifen soll sich jedoch als zweite Lage ein Dichtmaterial befinden, welches bei erhöhter Temperatur aufschäumt bzw. sich ausdehnt. Hierdurch werden dann die Dichtstreifen gegen den Klappenflügel gepreßt und so eine zusätzliche Abdichtung des Spaltes zwischen Klappenflügel und Rahmen erzielt. Ferner wirken die Anschlagwinkel ebenfalls einer thermischen Verformung des Klappenflügels entgegen.Under these sealing strips, however, there should be a sealing material as a second layer, which foams or expands at elevated temperature. As a result, the sealing strips are then pressed against the flap wing and an additional sealing of the gap between the flap wing and frame is achieved. Furthermore, the stop angles also counteract thermal deformation of the flap wing.

Hervorzuheben ist die fast 100%-ige Abdichtung des Klappenflügels im Brandfall trotz geringer zusätzlicher Aufwendungen.The almost 100% sealing of the flap wing in the event of a fire should be emphasized despite the low additional expenditure.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in

Figur 1
eine Frontansicht auf eine schematisch dargestellte, erfindungsgemäße Brandschutzklappe mit geschlossenem Klappenflügel;
Figur 2
einen Längsschnitt durch die Brandschutzklappe gemäß Figur 1 entlang Linie II-II;
Figur 3
einen vergrößert dargestellten Ausschnitt des Längsschnitts im Bereich des Klappenflügels der Brandschutzklappe nach Figur 1;
Figur 4
einen vergrößert dargestellten Ausschnitt eines Querschnitts durch die Brandschutzklappe gemäß Figur 1 im Bereich einer Drehachse für den Klappenflügel entlang Linie IV-IV.
Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
Figure 1
a front view of a schematically illustrated fire damper according to the invention with closed flap wing;
Figure 2
a longitudinal section through the fire damper according to Figure 1 along line II-II;
Figure 3
an enlarged section of the longitudinal section in the area of the flap wing of the fire damper according to Figure 1;
Figure 4
an enlarged section of a cross section through the fire damper according to Figure 1 in the region of an axis of rotation for the flap wing along line IV-IV.

Eine erfindungsgemäße Brandschutzklappe R besteht gemäß Figur 1 aus einem Rahmen 1, welcher ein viereckiges Gehäuse für einen Klappenflügel 5 ausbildet. Von dem Rahmen 1 sind allseits Seitenstreifen 2 abgekantet. An den acht Ecken des Rahmens sind jeweils zwei Seitenstreifen 2 über Schrauben, Nieten 3 od. dgl. mit Befestigungswinkeln 4 verbunden. Zur Befestigung des Rahmens 1 an nicht näher gezeigten Kanälen eines Luftleitsystems weisen diese Befestigungswinkel 4 in ihren Eckbereichen jeweils ein Langloch 6 auf.According to FIG. 1, a fire damper R according to the invention consists of a frame 1 which forms a square housing for a damper wing 5. Side strips 2 are folded on all sides of the frame 1. At each of the eight corners of the frame, two side strips 2 are connected by screws, rivets 3 or the like with fastening angles 4. For fastening the frame 1 to channels of an air guidance system, not shown in detail, these fastening angles 4 each have an elongated hole 6 in their corner regions.

In den Rahmen 1 ist etwa mittig eine umlaufende Profilierung eingeformt, welche eine U-förmige Form aufweist. Diese Profilierung erzeugt oben und unten im Rahmen 1 eine Rinne 7, da sie nach außen weist, während sie seitlich nach innen gerichtet ist und so einen Wall 8 ausbildet. In diesen seitlichen Wällen 8 ist der Klappenflügel 5 gelagert. Hierzu sind aus den seitlichen Wällen 8 gemäß Figur 4 Lagerhülsen 13 herausgeformt, welche entsprechende Lagerschalen 14 umfangen. Die Lagerschalen 14 werden dabei von einer Achswelle 12 durchdrungen, die in diesen Lagerschalen 14 dreht. Wie aus Figur 2 ersichtlich ist, ist die Achswelle 12 querschnittlich rechteckig ausgebildet, so daß bei ihrer Drehung um die Achse A der Klappenflügel 5 in Richtung z bewegt werden kann.A circumferential profiling, which has a U-shaped shape, is formed approximately in the center of the frame 1. This profiling creates a groove 7 in the frame 1 at the top and bottom, since it points outwards, while it is directed laterally inwards and thus forms a wall 8. The flap wing 5 is supported in these side walls 8. For this purpose, bearing sleeves 13 are formed out of the side walls 8 according to FIG. 4, which encompass corresponding bearing shells 14. The bearing shells 14 are penetrated by an axle shaft 12 which rotates in these bearing shells 14. As can be seen from Figure 2, the axle shaft 12 is rectangular in cross section, so that when it rotates about the axis A of the flap 5 can be moved in the direction z.

Rechtsseitig ist der Achswelle 12 noch ein Stellhebel 15 aufgeschoben und über einen Stift 16 mit der Achswelle 12 drehfest verbunden. Dieser Stellhebel 15 wird von einer Feder 17 angegriffen, welche bewirkt, daß über den Stellhebel 15 der Klappenflügel 5 in Schließlage gedreht wird. In Öffnungslage wird der Stellhebel 15 von einem nicht näher dargestellten Schmelzlot so gehalten, daß der Klappenflügel 5 geöffnet ist. Erst wenn dieses Schmelzlot infolge Temperaturanstiegs, insbesondere über 72°C, bricht, dreht die Achswelle 12 entgegen der Drehrichtung z, was durch die Beaufschlagung des Stellhebels 15 mittels der Feder 17 geschieht.On the right side of the axle shaft 12, an adjusting lever 15 is pushed on and connected to the axle shaft 12 in a rotationally fixed manner via a pin 16. This control lever 15 is attacked by a spring 17, which causes the flap leaf 5 to be rotated in the closed position via the control lever 15. In the open position, the adjusting lever 15 is held by a fusible link, not shown, so that the flap wing 5 is open. Only when this fusible link breaks as a result of an increase in temperature, in particular above 72 ° C., does the axle shaft 12 rotate counter to the direction of rotation z, which is done by actuating the actuating lever 15 by means of the spring 17.

Sowohl der Stellhebel 15 wie auch die gegenüberliegende Lagerung der Achswelle 12 ist mit einer Abdeckung 18 bzw. 19 versehen.Both the control lever 15 and the opposite bearing of the axle shaft 12 are provided with a cover 18 and 19, respectively.

Der Klappenflügel 5 selbst besteht gemäß Figur 2 aus Stahlblechplatten 9, zwischen welchen eine Isolierung, beispielsweise aus Glasfasermaterial 10, Steinwollematerial, Gips 11 oder einem sonstigen Isoliermaterial, angeordnet ist. Die Stahlblechplatten 9 werden durch umlaufende Profilleisten 20 in Abstand voneinander gehalten. Dabei ist jede Profilleiste 20 U-förmig ausgebildet, wobei die jeweiligen seitlichen Schenkel des U durch einen Umschlag eine Nut 21 für die Stahlblechplatten 9 ausbilden. Auf diese Weise umgreifen die Profilleisten 20 mit ihren Seitenschenkeln die Stahlblechplatten 9 und bilden nach außen eine Aufnahmerinne 22 (siehe Figur 3) aus.According to FIG. 2, the flap wing 5 itself consists of sheet steel plates 9, between which an insulation, for example made of glass fiber material 10, rock wool material, plaster 11 or another insulating material, is arranged. The sheet steel plates 9 are kept at a distance from one another by circumferential profile strips 20. Each profile strip 20 is U-shaped, the respective lateral legs of the U forming a groove 21 for the steel sheet plates 9 by means of an envelope. In this way, the profile strips 20 encompass the sheet steel plates 9 with their side legs and form a receiving groove 22 on the outside (see FIG. 3).

In die Aufnahmerinne 22 ist eine Verstärkungsleiste 23 eingelegt, welche eine genügende Stärke aufweist, damit sie als Versteifung des Klappenflügels 5 dienen kann. Ferner dient sie insbesondere der Lagerung, d.h. der Halterung der Achswelle 12. Hierzu dürfte es ratsam sein, die Verstärkungsleiste 23 in der Aufnahmerinne 22 festzulegen.In the receiving channel 22, a reinforcing strip 23 is inserted, which has sufficient strength so that it can serve as a stiffening of the flap wing 5. It is also used for storage, i.e. the mounting of the axle shaft 12. For this purpose, it should be advisable to fix the reinforcing bar 23 in the receiving groove 22.

Die Aufnahmerinne 22 wird von einer eingesetzten Schiene 24 abgedeckt, wobei diese Schiene 24 auch die Verstärkungsleiste 23 übergreift. In einem Hohlraum 25 zwischen Schiene 24 und Verstärkungsleiste 23 befindet sich ein unter Temperatureinwirkung aufschäumendes Material 26.The receiving channel 22 is covered by an inserted rail 24, which rail 24 also overlaps the reinforcing strip 23. In a cavity 25 between the rail 24 and the reinforcement strip 23 there is a material 26 which foams under the influence of temperature.

Beispielsweise im Brandfall wird bei Uberschreitung einer bestimmten Temperatur der Klappenflügel 5 geschlossen. Durch die Temperatureinwirkung schäumt das Material 26 auf und drückt die Schiene 24 nach außen, seitlich gegen die Wälle 8 und oben und unten in jeweils die Rinne 7. Hierdurch wird bereits eine sehr gute Abdichtung erreicht.For example, in the event of a fire, the flap wing 5 is closed when a certain temperature is exceeded. Due to the effect of temperature, the material 26 foams and presses the rail 24 outwards, laterally against the ramparts 8 and up and down into the channel 7 in each case. A very good seal is thereby already achieved.

Frontwärtig ist im oberen Bereich dem Klappenflügel 5 ein Anschlagwinkel 27 zugeordnet. Ein weiterer Anschlagwinkel 28 befindet sich hinter dem Klappenflügel 5 im unteren Bereich. Jeder dieser Anschlagwinkel 27 bzw. 28 ist U-förmig ausgebildet und besitzt einen Längsstreifen 29 sowie zwei Seitenstreifen 30 und 31. Querschnittlich gesehen sind die Anschlagwinkel 27 bzw. 28 stufenförmig ausgebildet, wie dies insbesondere in Figur 4 ersichtlich ist. Hierdurch wird zum Rahmen 1 hin ein randseitiger Kanal 32 ausgebildet, welcher der Aufnahme von Dichtungsmaterial 33 dient. Bevorzugt befinden sich in dem Kanal 32 zwei verschiedenartige Dichtungsmaterialien, wobei ein Dichtungsmaterial zum Klappenflügel 5 hin vorgelagert ist. Dieses Dichtungsmaterial dichtet im Kaltzustand sehr gut ab und besteht beispielsweise aus herkömmlichen Dichtstreifen vor allem aus abriebfestem Material. Hinter diesen Dichtstreifen ist zusätzliches Dichtmaterial, beispielsweise auch als Streifen, eingebaut, wobei diese Dichtmaterialien jedoch erst bei Erreichen einer bestimmten Temperatur aufschäumt und so das vorgelagerte Dichtmaterial gegen den Klappenflügel 5 preßt. Hierdurch wird eine zusätzliche Abdichtung des Klappenflügels 5 erreicht.At the front, the flap wing 5 is assigned a stop bracket 27 in the upper region. Another stop bracket 28 is located behind the flap wing 5 in the lower region. Each of these stop angles 27 and 28 is U-shaped and has a longitudinal strip 29 and two side strips 30 and 31. In cross-section, the stop angles 27 and 28 are step-shaped, as can be seen in particular in FIG. As a result, an edge-side channel 32 is formed towards the frame 1, which is used to hold sealing material 33. Two different types of sealing materials are preferably located in the channel 32, a sealing material being arranged in front of the flap wing 5. This sealing material seals very well when cold and consists, for example, of conventional sealing strips, especially of abrasion-resistant material. Additional sealing material, for example also as a strip, is installed behind these sealing strips, these sealing materials, however, only foaming when a certain temperature is reached and thus pressing the preceding sealing material against the flap wing 5. This results in an additional sealing of the flap wing 5.

Die Dichtigkeit wird noch dadurch erhöht, daß das sich in den Kanälen 32 befindliche Dichtmaterial die Abkantungen der Profilleisten 20, welche die Stahlblechplatten 9 umfassen, ummanteln und in die Bereiche zwischen Wall und Klappenflügel eindringt.

Figure imgb0001
The tightness is further increased by the fact that the sealing material located in the channels 32 surrounds the bends of the profile strips 20, which comprise the sheet steel plates 9, and penetrates into the areas between the wall and the flap wing.
Figure imgb0001

Claims (11)

Brandschutzklappe aus einem Rahmen mit einer Luftdurchlaßöffnung und einem in dem Rahmen angeordneten Klappenflügel, welcher in etwa dem Querschnitt des Rahmens angepaßt ist,

dadurch gekennzeichnet,

daß der Klappenflügel (5) randseitig zumindest teilweise mit einem sich bei erhöhter Temperatur ausdehnenden oder aufschäumenden Dichtelement oder -material (26) belegt und/oder dem Klappenflügel (5) in seiner Schließlage zumindest ein Anschlagwinkel (27 bzw. 28) zugeordnet ist, welcher den Klappenflügel (5) zum Rahmen (1) hin zumindest teilweise abdichtet.
Fire damper consisting of a frame with an air passage opening and a flap wing arranged in the frame, which is adapted approximately to the cross section of the frame,

characterized,

that the flap wing (5) is at least partially covered at the edge with a sealing element or material (26) that expands or foams at elevated temperature and / or in its closed position the flap wing (5) is assigned at least one stop angle (27 or 28), which seals the flap wing (5) to the frame (1) at least partially.
Brandschutzklappe nach Anspruch 1, dadurch gekennzeichnet, daß das Material (26) in eine Aufnahmerinne (22) eingebettet ist.Fire damper according to claim 1, characterized in that the material (26) is embedded in a receiving channel (22). Brandschutzklappe nach Anspruch 2, dadurch gekennzeichnet, daß die Aufnahmerinne (22) von einer querschnittlich U-förmigen Profilleiste (20) gebildet ist.Fire damper according to claim 2, characterized in that the receiving channel (22) is formed by a cross-sectionally U-shaped profile strip (20). Brandschutzklappe nach Anspruch 3, dadurch gekennzeichnet, daß die Schenkel der Profilleisten (20) durch einen Umschlag eine Nut (21) ausbilden, in welche Front- und Rückenplatte (9) des Klappenflügels (5) eingeschoben sind.Fire damper according to claim 3, characterized in that the legs of the profile strips (20) form a groove (21) by means of an envelope, into which the front and back plates (9) of the flap wing (5) are inserted. Brandschutzklappe nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das sich ausdehnende oder aufschäumende Dichtelement bzw. -material (26) von einer Schiene (24) überdeckt ist.Fire damper according to at least one of claims 1 to 4, characterized in that the expanding or foaming sealing element or material (26) is covered by a rail (24). Brandschutzklappe nach wenigstens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Klappenflügel (5) zumindest teilweise randseitig unter dem Dichtelement bzw. -material (26) mit einer Verstärkungsleiste (23) belegt ist.Fire damper according to at least one of claims 1 to 5, characterized in that the flap wing (5) is covered at least partially on the edge side under the sealing element or material (26) with a reinforcing strip (23). Brandschutzklappe nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß sich zwischen Front- und Rückenplatte (9) Isoliermaterial befindet.Fire damper according to one of claims 4 to 6, characterized in that there is insulating material between the front and back plate (9). Brandschutzklappe nach wenigstens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß in dem Rahmen (1) um den Klappenflügel (5) in seiner Schließlage herum eine Profilierung eingeformt ist.Fire damper according to at least one of claims 1 to 7, characterized in that a profile is formed in the frame (1) around the flap wing (5) in its closed position. Brandschutzklappe nach Anspruch 8, dadurch gekennzeichnet, daß die seitliche Profilierung nach innen jeweils einen Wall (8) und die Profilierung nach oben und unten nach außen eine Rinne (7) ausbildet.Fire damper according to Claim 8, characterized in that the lateral profiling forms a wall (8) on the inside and the profiling on the top and bottom forms a channel (7) on the outside. Brandschutzklappe nach wenigstens einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Anschlagwinkel (27,28) zum Rand des Klappenflügels (5) hin einen Kanal (32) ausbilden, welcher Dichtelemente oder -material (33) aufnimmt.Fire damper according to at least one of claims 1 to 9, characterized in that the stop angles (27, 28) form a channel (32) towards the edge of the flap wing (5) which receives sealing elements or material (33). Brandschutzklappe nach Anspruch 10, dadurch gekennzeichnet, daß in den Kanal (32) zuerst Dichtmaterial eingelegt ist, welches bei erhöhter Temperatur sich ausdehnt, aufschäumt od. dgl., auf welches Dichtmaterial gelegt ist, welches an dem Klappenflügel (5) in Schließlage anliegt.Fire damper according to claim 10, characterized in that first sealing material is inserted into the channel (32), which expands, foams or the like at an elevated temperature.
EP91103869A 1990-03-17 1991-03-14 Fire protection flap Expired - Lifetime EP0447944B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008686 1990-03-17
DE4008686A DE4008686A1 (en) 1990-03-17 1990-03-17 FIRE PROTECTION VALVE

Publications (2)

Publication Number Publication Date
EP0447944A1 true EP0447944A1 (en) 1991-09-25
EP0447944B1 EP0447944B1 (en) 1995-01-04

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ID=6402500

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EP (1) EP0447944B1 (en)
AT (1) ATE116734T1 (en)
DE (2) DE4008686A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369571A (en) * 2000-12-01 2002-06-05 Tri Air Innovations Ltd Air flow controller and fire damper in an air flow duct
ES2232279A1 (en) * 2003-04-25 2005-05-16 Shako Metallwarenfabrik Ferdinand Schad Kg Fire-resistant gate for air conditioning ventilation duct, has body provided with pivots for passing air into gate, where surfaces of body are separated by iron plates and plaster layer is formed on body
US6991536B2 (en) 2000-12-01 2006-01-31 Kent Tooling And Components Limited Air flow controller and fire damper in an air flow duct
WO2007068786A1 (en) * 2005-12-13 2007-06-21 Fläkt Woods AB Fire damper blade
FR2898062A1 (en) * 2006-03-03 2007-09-07 Yvroud Europ Des Fluides Sa Fire protection flap for traffic tunnel, has actuator triggered when intumescence temperature of joints is greater than specific value for sealing plate and ends of axle in pipe when plate closes pipe
EP2062617A1 (en) * 2007-08-01 2009-05-27 Ruskin Air Management Limited A damper
EP2179768A1 (en) * 2008-10-25 2010-04-28 Krensel GmbH Brandschutztechnische Bausysteme Flame-retardant/smoke extraction device
EP3366356A1 (en) * 2017-02-23 2018-08-29 Trox GmbH Damper, especially fireproof damper
CN110114122A (en) * 2017-08-28 2019-08-09 扎斯特瑞特制造有限责任公司 Ventilation safety cabinet equipped with thermotropic fluctuation dampers

Families Citing this family (2)

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DE19510476C1 (en) * 1995-03-27 1996-09-26 Werner Wildeboer Fire protection barrier for air duct in building
DE19619100A1 (en) * 1996-05-06 1997-11-13 Schoettler Lunos Lueftung Release or actuation element e.g. to trip sprinklers

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DE2335393A1 (en) * 1973-07-12 1975-01-30 Schako Metallwarenfabrik Fire safety flap valve for heating or air ducts - has a spring activator controlled by manual or automatic release
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369571A (en) * 2000-12-01 2002-06-05 Tri Air Innovations Ltd Air flow controller and fire damper in an air flow duct
GB2369571B (en) * 2000-12-01 2005-01-26 Tri Air Innovations Ltd Air flow controller and fire damper in an air flow duct
US6991536B2 (en) 2000-12-01 2006-01-31 Kent Tooling And Components Limited Air flow controller and fire damper in an air flow duct
ES2232279A1 (en) * 2003-04-25 2005-05-16 Shako Metallwarenfabrik Ferdinand Schad Kg Fire-resistant gate for air conditioning ventilation duct, has body provided with pivots for passing air into gate, where surfaces of body are separated by iron plates and plaster layer is formed on body
WO2007068786A1 (en) * 2005-12-13 2007-06-21 Fläkt Woods AB Fire damper blade
NO338823B1 (en) * 2005-12-13 2016-10-24 Flaekt Woods Ab Brannspjeldblad
FR2898062A1 (en) * 2006-03-03 2007-09-07 Yvroud Europ Des Fluides Sa Fire protection flap for traffic tunnel, has actuator triggered when intumescence temperature of joints is greater than specific value for sealing plate and ends of axle in pipe when plate closes pipe
EP2062617A1 (en) * 2007-08-01 2009-05-27 Ruskin Air Management Limited A damper
EP2179768A1 (en) * 2008-10-25 2010-04-28 Krensel GmbH Brandschutztechnische Bausysteme Flame-retardant/smoke extraction device
EP3366356A1 (en) * 2017-02-23 2018-08-29 Trox GmbH Damper, especially fireproof damper
CN110114122A (en) * 2017-08-28 2019-08-09 扎斯特瑞特制造有限责任公司 Ventilation safety cabinet equipped with thermotropic fluctuation dampers
TWI762572B (en) * 2017-08-28 2022-05-01 美商傑斯萊特製造公司 Vented safety cabinet with thermally-actuated damper

Also Published As

Publication number Publication date
DE4008686A1 (en) 1991-09-19
DE59104110D1 (en) 1995-02-16
EP0447944B1 (en) 1995-01-04
ATE116734T1 (en) 1995-01-15

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