EP0732125B1 - Fire preventive blocking device for ventilation channels - Google Patents

Fire preventive blocking device for ventilation channels Download PDF

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Publication number
EP0732125B1
EP0732125B1 EP95116150A EP95116150A EP0732125B1 EP 0732125 B1 EP0732125 B1 EP 0732125B1 EP 95116150 A EP95116150 A EP 95116150A EP 95116150 A EP95116150 A EP 95116150A EP 0732125 B1 EP0732125 B1 EP 0732125B1
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EP
European Patent Office
Prior art keywords
shut
housing
air inlet
inlet opening
fireproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95116150A
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German (de)
French (fr)
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EP0732125A3 (en
EP0732125A2 (en
Inventor
Jürgen Eidmann
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Individual
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Individual
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Publication of EP0732125A3 publication Critical patent/EP0732125A3/en
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C2/00Fire prevention or containment
    • A62C2/06Physical fire-barriers
    • A62C2/18Sliding dampers
    • A62C2/20Sliding dampers at 90 degrees to the plane of the opening
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a fire protection shut-off device for ventilation ducts, consisting of a built-in housing with an air inlet opening and an air outlet opening, wherein the air inlet opening by means of a shut-off device is lockable and the shut-off element under spring action is held in the open position and at a predetermined The temperature in the closed position is skyrocketing.
  • Such a fire protection shut-off device is known in which the shut-off device is in the installation housing there is pivoted wing flaps, which means of a fusible link held in the open position under spring tension and after bursting of the solder in Rapid closing position.
  • the two wing flaps are open a common or separate swivel axes under Formation of a free space in the middle of the housing Open position held.
  • the same fluidic disadvantages occur with a other known construction with a bearing profile for the Wing flaps open. Here disturbs in fluidic terms a bow-like tension spring, which the two wing flaps or their storage in the open position (see US 41 46 048).
  • a generic shut-off device is from FR-A-2 234 501 known.
  • the invention has for its object a fire protection shut-off device for ventilation ducts as described at the beginning To create a kind that is not only reduced Pressure loss, but moreover by a special simple, functional and practically maintenance-free design distinguished.
  • the means the memory spring held in the open position and only in Fire in the closed position depressed locking plate enables a practically undisturbed passage of air through the fire protection shut-off device according to the invention, so that only minimal pressure losses occur.
  • the Locking mechanism relatively simple and reliable is constructed and in particular largely maintenance-free is because of the use of rotating locking elements such as wing flaps or the like rotatable Parts that are in the air flow and can become dirty is waived.
  • the guide rod on the lock plate and on the other hand the one surrounding the guide rod Closing or memory springs are suitable, a sufficient exact translational movement of the locking plate in the event of a fire to ensure in the case of an expanding memory spring that the locking plate is actually the air inlet opening on the opposite side of the housing Seals off.
  • the Locking plate in the open position by means of a heat sensitive Adhesive on the assigned housing side or Be glued to the housing wall if, for example, even at strong air flow an absolutely motion-free fit of the Locking plate should be ensured in the open position and / or the closing or memory spring is not on the Closing plate or its guide rod is attached.
  • This heat-sensitive adhesive adds the locking plate Development of heat immediately free, so that the expansion the memory spring is not hindered.
  • the invention provides that the installation housing as a flat housing with a base plate with the Air inlet opening and with one on the base plate below Formation of cover flanges attached to the mounting flanges is formed that the cover to form the Air outlet opening has an open end face, and that the guide socket is arranged on the outside of the cover is.
  • the air inlet opening may be retracted Have inner edge, the formation of an annular gap fire-resistant plate made of calcium silicate, for example is surrounded, the locking plate having an outer edge has in the closed position of the locking plates on the Air inlet opening engages in the annular gap and the Encompasses the inner edge of the air inlet opening. In this way not only is increased fire resistance achieved, but also an optimal sealing of the air inlet opening with the locking plate pressed on, in the closed position is practically centered.
  • the Closing spring expediently the guide rod with a predetermined tight play of movement, and is beyond with specified movement play in the guide socket used so that the closing spring and the guide rod when guiding the locking plate from its open position cooperate in the closed position as it were. Furthermore, the closing spring with one end on the guide socket and with their other at the foot of the guide rod and / or on be attached to the locking plate.
  • the invention finally sees before that the installation housing or its cover fire-resistant panels or equivalent Expansion at hood height is surrounded by a Plate-limited air outlet opening in a plate or hood-parallel ventilation duct, which is a main channel. This is the targeted double redirection and optimized sound insulation.
  • This fire protection shut-off device for Ventilation ducts shown, the air flow through Arrows is indicated.
  • This fire protection shut-off device consists in its basic structure of a built-in housing 1 with an air inlet opening 2 and an air outlet opening 3, the air inlet opening 2 by means of a shut-off device can be shut off and the shut-off device is held in the open position under spring loading and at the specified temperature in the closed position.
  • the Individual has the installation housing 1 at its the air inlet opening 2 opposite housing side a guide socket 4 for a guide rod 5 on the shut-off device and a closing spring 6 surrounding the guide rod 5.
  • the Shut-off device is designed as a closing plate 7.
  • the Closing spring 6 is contracted as at room temperature Memory spring designed that can withstand higher temperatures due to the heat generated by a fire expands and the locking plate 7 in the closed position presses on the air inlet opening 2.
  • the locking plate 7 is in the open position by means of the embodiment a heat sensitive adhesive 8 on the associated Glued on the housing side.
  • the installation housing 1 is a flat housing with a base plate 9 with the air inlet opening 2 and with one the base plate with the formation of mounting flanges on the edge 10 attached cover 11 formed.
  • the Cover 11 points to form the air outlet opening 3 an open end face.
  • the guide socket 4 is arranged on the outside on the cover 11.
  • the air inlet opening 2 has a retracted inner edge 12 on, forming an annular gap from a fire resistant Plate or plates 13 made of calcium silicate, for example is surrounded.
  • the locking plate 7 has one Outer edge 14 on the closed position of the locking plate 7 on the air inlet opening 2 in the annular gap 15 engages and the inner edge 12 of the air inlet opening 2 embraces.
  • the installation housing 1 or its cover 11 is of fire-resistant panels 16 or a fire-resistant Surrounded at hood height.
  • the of a plate 16 or the expansion limited air outlet opening 3 opens into a plate or hood parallel Ventilation duct 17.
  • the closing spring 6 surrounds the guide rod 5 with a predetermined Movement game and even with a predetermined movement game inserted in the guide socket 4. Furthermore, the Closing spring 6 with one end on the guide stub 4 and with its other end at the foot of the guide rod 5 and / or be attached to the locking plate 7.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Duct Arrangements (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The device comprises an insert housing (1) which has a guide socket (4) on the side opposite to the air intake (2), for a guide rod (5) on the closure plate (7). It also has a closure spring (6) formed as a memory spring, enclosing the guide rod. In open position, the plate is retained on the associated housing side by a heat-sensitive adhesive (8). The closure spring is fastened with one end to the guide socket, and with the other end to the foot of the guide rod and/or the closure plate. The housing cover (11) is enclosed by fire-resistant plates (16).

Description

Die Erfindung betrifft eine Feuerschutz-Absperrvorrichtung für Lüftungskanäle, bestehend aus einem Einbaugehäuse mit einer Lufteintrittsöffnung und einer Luftaustrittsöffnung, wobei die Lufteintrittsöffnung mittels eines Absperrorgans absperrbar ist und das Absperrorgan unter Federbeaufschlagung in Offenstellung gehalten ist und bei vorgegebener Temperatur in Schließstellung schnellt.The invention relates to a fire protection shut-off device for ventilation ducts, consisting of a built-in housing with an air inlet opening and an air outlet opening, wherein the air inlet opening by means of a shut-off device is lockable and the shut-off element under spring action is held in the open position and at a predetermined The temperature in the closed position is skyrocketing.

Es ist eine derartige Feuerschutz-Absperrvorrichtung bekannt, bei welcher das Absperrorgan aus im Einbaugehäuse schwenkbar gelagerten Flügelklappen besteht, welche mittels eines Schmelzlots unter Federspannung in Offenstellung gehalten sind und nach dem Bersten des Schmelzlots in Schließstellung schnellen. Die beiden Flügelklappen sind auf einer gemeinsamen oder getrennten Schwenkachsen unter Bildung eines freien Zwischenraumes in der Gehäusemitte in Offenstellung gehalten. Bei einer bekannten Ausführungsform erstreckt sich die Lagerachse für die beiden Flügelklappen über den gesamten Gehäusequerschnitt. Das in strömungstechnischer Hinsicht nachteilig (vgl. FR 22 86 351). Die gleichen strömungstechnischen Nachteile treten bei einer anderen bekannten Konstruktion mit einem Lagerprofil für die Flügelklappen auf. Hier stört in strömungstechnischer Hinsicht eine bügelartige Zugfeder, welche die beiden Flügelklappen bzw. deren Lagerung in Offenstellung untergreift (vgl. US 41 46 048).Such a fire protection shut-off device is known in which the shut-off device is in the installation housing there is pivoted wing flaps, which means of a fusible link held in the open position under spring tension and after bursting of the solder in Rapid closing position. The two wing flaps are open a common or separate swivel axes under Formation of a free space in the middle of the housing Open position held. In a known embodiment extends the bearing axis for the two wing flaps over the entire cross section of the housing. That in fluidic In terms of disadvantage (see FR 22 86 351). The same fluidic disadvantages occur with a other known construction with a bearing profile for the Wing flaps open. Here disturbs in fluidic terms a bow-like tension spring, which the two wing flaps or their storage in the open position (see US 41 46 048).

Eine gattungsgemäße Absperrvorrichtung ist aus FR-A- 2 234 501 bekannt. A generic shut-off device is from FR-A-2 234 501 known.

Der Erfindung liegt die Aufgabe zugrunde eine Feuerschutz-Absperrvorrichtung für Lüftungskanäle der eingangs beschriebenen Art zu schaffen, die sich nicht nur durch reduzierte Druckverluste, sondern darüber hinaus durch eine besonders einfache, funktionsgerechte und praktisch wartungsfreie Bauweise auszeichnet.The invention has for its object a fire protection shut-off device for ventilation ducts as described at the beginning To create a kind that is not only reduced Pressure loss, but moreover by a special simple, functional and practically maintenance-free design distinguished.

Diese Aufgabe löst die Erfindung gemäß Anspruch 1 bei einer gattungsgemäßen Feuerschutz-Absperrvorrichtung unter anderem dadurch, daß das Einbaugehäuse an seiner der Lufteintrittsöffnung gegenüberliegenden Gehäuseseite einen Führungsstutzen für eine Führungsstange am Absperrorgan und eine die Führungsstange umgebende Schließfeder aufweist, daß das Absperrorgan als Schließteller und die Schließfeder als Memory-Feder ausgebildet sind. Unter Memory-Feder ist eine Schließfeder mit einem Formgedächtnis zu verstehen, die bei Raumtemperatur zusammengezogen ist und bei höheren Temperaturen aktiviert wird, sich folglich ausdehnt. - Überraschenderweise ist eine solche Memory-Feder für den Einsatz bei Feuerschutz-Absperrvorrichtungen geeignet, und sorgt bei der erfindungsgemäßen Ausführungform dafür, daß der Schließteller bei Raumtemperatur und folglich zusammengezogener Memory-Feder in Offenstellung gehalten wird, im Brandfall dagegen in Schließstellung gedrückt wird, weil sich die Memory-Feder infolge der sich entwickelnden Temperaturen verhältnismäßig schnell ausdehnt und hinreichende Schließkräfte erzeugt. Der mittels der Memory-Feder in Offenstellung gehaltene und nur im Brandfall in Schließstellung niedergedrückte Schließteller ermöglicht einen praktisch ungestörten Luftdurchtritt durch die erfindungsgemäße Feuerschutz-Absperrvorrichtung, so daß nur minimale Druckverluste auftreten. Hinzu kommt, daß der Schließmechanismus verhältnismäßig einfach und funktionssicher aufgebaut ist und insbesondere weitgehend wartungsfrei ist, weil auf den Einsatz drehbeweglicher Schließelemente wie Flügelklappen oder dergleichen drehbewegliche Teile, die im Luftstrom liegen und verschmutzen können, verzichtet wird. Überraschen muß in diesem Zusammenhang ferner, daß einerseits die Führungsstange an dem Schließteller und andererseits die die Führungsstange umgebende Schließ- bzw. MemoryFeder geeignet sind, eine hinreichend exakte translatorische Bewegung des Schließtellers im Brandfalle bei sich ausdehnender Memory-Feder derart zu gewährleisten, daß der Schließteller auch tatsächlich die Lufteintrittsöffnung auf der gegenüberliegenden Gehäuseseite mit Dichtwirkung abschließt. Im Rahmen der Erfindung kann der Schließteller in Offenstellung mittels eines wärmeempfindlichen Klebers an der zugeordneten Gehäuseseite bzw. Gehäusewand angeklebt sein, wenn beispielsweise selbst bei starker Luftströmung ein absolut bewegungsfreier Sitz des Schließtellers in Offenstellung gewährleistet sein soll und/oder die Schließ- bzw. Memory-Feder nicht an dem Schließteller bzw. seiner Führungsstange befestigt ist. Dieser wärmeempfindliche Kleber gibt den Schließteller bei Wärmeentwicklung unverzüglich frei, so daß die Ausdehnung der Memory-Feder nicht behindert wird.This object is achieved by the invention in accordance with claim 1 generic Fire protection shut-off device, among other things, in that the installation housing at its opposite the air inlet opening Housing side a guide socket for a guide rod on the shut-off device and a the guide rod Surrounding spring has that the shut-off as Closing plate and the closing spring designed as a memory spring are. There is a closing spring under the memory spring a shape memory to understand that at room temperature is contracted and activated at higher temperatures will consequently expand. - Surprisingly, one is such memory spring for use in fire protection shut-off devices suitable, and ensures the inventive Design that the locking plate at room temperature and consequently contracted memory spring in the open position is held, in the event of fire, however, in the closed position is pressed because the memory spring as a result the developing temperatures relatively quickly expands and generates sufficient closing forces. The means the memory spring held in the open position and only in Fire in the closed position depressed locking plate enables a practically undisturbed passage of air through the fire protection shut-off device according to the invention, so that only minimal pressure losses occur. In addition, the Locking mechanism relatively simple and reliable is constructed and in particular largely maintenance-free is because of the use of rotating locking elements such as wing flaps or the like rotatable Parts that are in the air flow and can become dirty is waived. Surprise in this context further that the one hand the guide rod on the lock plate and on the other hand the one surrounding the guide rod Closing or memory springs are suitable, a sufficient exact translational movement of the locking plate in the event of a fire to ensure in the case of an expanding memory spring that the locking plate is actually the air inlet opening on the opposite side of the housing Seals off. Within the scope of the invention, the Locking plate in the open position by means of a heat sensitive Adhesive on the assigned housing side or Be glued to the housing wall if, for example, even at strong air flow an absolutely motion-free fit of the Locking plate should be ensured in the open position and / or the closing or memory spring is not on the Closing plate or its guide rod is attached. This heat-sensitive adhesive adds the locking plate Development of heat immediately free, so that the expansion the memory spring is not hindered.

Weitere erfindungswesentliche Merkmale sind im folgenden aufgeführt. So sieht die erfindung vor, daß das Einbaugehäuse als Flachgehäuse mit einer Grundplatte mit der Lufteintrittsöffnung und mit einer auf der Grundplatte unter Bildung von randseitigen Einbauflanschen befestigten Abdeckhaube ausgebildet ist, daß die Abdeckhaube unter Bildung der Luftaustrittsöffnung eine offene Stirnfläche aufweist, und daß der Führungsstutzen außenseitig auf der Abdeckhaube angeordnet ist. Diese Maßnahmen haben zur Folge, daß gleichsam eine zweifache Luftumlenkung aus dem betreffenden Raum in den Hauptlüftungskanal erfolgen muß und dadurch eine beachtliche Schalldämmung erreicht wird. Aus strömungstechnischen Gründen kann die Lufteintrittsöffnung einen eingezogenen Innenrand aufweisen, der unter Ringspaltbildung von einer feuerwiderstandsfähigen Platte aus zum Beispiel Kalziumsilikat umgeben ist, wobei der Schließteller einen Außenrand aufweist, der in Schließstellung des Schließtellern auf der Lufteintrittsöffnung in den Ringspalt eingreift und den Innenrand der Lufteintrittsöffnung umgreift. Auf diese Weise wird nicht nur ein erhöhter Feuerwiderstand erreicht, sondern auch ein optimales Abdichten der Lufteintrittsöffnung bei aufgedrücktem Schließteller, der in Schließstellung praktisch zentriert wird. Zur Verwirklichtung einer kompakten und funktionssicheren Bauweise umgibt die Schließfeder zweckmäßigerweise die Führungsstange mit einem vorgegebenen engen Bewegungsspiel, und ist darüber hinaus mit vorgegebenem Bewegungsspiel in den Führungsstutzen eingesetzt, so daß die Schließfeder und die Führungsstange bei der Führung des Schließtellers aus seiner Offenstellung in die Schließstellung gleichsam zusammenwirken. Ferner kann die Schließfeder mit ihrem einen Ende an dem Führungsstutzen und mit ihrem anderen am Fuß der Führungsstange und/oder auf dem Schließteller befestigt sein. Endlich sieht die Erfindung vor, daß das Einbaugehäuse bzw. dessen Abdeckhaube von feuerwiderstandsfähigen Platten oder einem entsprechenden Ausbau in Haubenhöhe umgeben ist und die von einer Platte begrenzte Luftaustrittsöffnung in einer platten- bzw. haubenparallelen Lüftungskanal mündet, bei dem es sich um einen Hauptkanal handelt. Dadurch wird die gezielte Zweifachumlenkung und erhöhte Schalldämmung optimiert.Further features essential to the invention are as follows listed. So the invention provides that the installation housing as a flat housing with a base plate with the Air inlet opening and with one on the base plate below Formation of cover flanges attached to the mounting flanges is formed that the cover to form the Air outlet opening has an open end face, and that the guide socket is arranged on the outside of the cover is. As a result of these measures, as it were a double deflection of air from the room in question the main ventilation duct must be done and thereby a considerable Soundproofing is achieved. From fluidic The air inlet opening may be retracted Have inner edge, the formation of an annular gap fire-resistant plate made of calcium silicate, for example is surrounded, the locking plate having an outer edge has in the closed position of the locking plates on the Air inlet opening engages in the annular gap and the Encompasses the inner edge of the air inlet opening. In this way not only is increased fire resistance achieved, but also an optimal sealing of the air inlet opening with the locking plate pressed on, in the closed position is practically centered. To realize one compact and reliable construction surrounds the Closing spring expediently the guide rod with a predetermined tight play of movement, and is beyond with specified movement play in the guide socket used so that the closing spring and the guide rod when guiding the locking plate from its open position cooperate in the closed position as it were. Furthermore, the closing spring with one end on the guide socket and with their other at the foot of the guide rod and / or on be attached to the locking plate. The invention finally sees before that the installation housing or its cover fire-resistant panels or equivalent Expansion at hood height is surrounded by a Plate-limited air outlet opening in a plate or hood-parallel ventilation duct, which is a main channel. This is the targeted double redirection and optimized sound insulation.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert; es zeigen:

Fig. 1
Eine erfindungsgemäße Feuerschutz-Absperrvorrichtung im Querschnitt,
Fig. 2
den Gegenstand nach Fig. 1 in Ansicht des Pfeiles x,
Fig. 3
den Gegenstand nach Fig. 1 in Ansicht des Pfeiles y.
In the following, the invention is explained in more detail with reference to a drawing showing only one embodiment; show it:
Fig. 1
A fire protection shut-off device according to the invention in cross section,
Fig. 2
1 in the view of arrow x,
Fig. 3
1 in the view of the arrow y.

In den Figuren ist eine Feuerschutz-Absperrvorrichtung für Lüftungskanäle dargestellt, wobei die Luftströmung durch Pfeile angedeutet ist. Diese Feuerschutz-Absperrvorrichtung besteht in ihrem grundsätzlichen Aufbau aus einem Einbaugehäuse 1 mit einer Lufteintrittsöffnung 2 und einer Luftaustrittsöffnung 3, wobei die Lufteintrittsöffnung 2 mittels eines Absperrorgans absperrbar ist und das Absperrorgan unter Federbeaufschlagung in Offenstellung gehalten ist und bei vorgegebener Temperatur in Schließstellung schnellt. Im einzelnen weist das Einbaugehäuse 1 an seiner der Lufteintrittsöffnung 2 gegenüberliegenden Gehäuseseite einen Führungsstutzen 4 für eine Führungsstange 5 am Absperrorgan und eine die Führungsstange 5 umgebende Schließfeder 6 auf. Das Absperrorgan ist als Schließteller 7 ausgebildet. Die Schließfeder 6 ist als bei Raumtemperatur zusammengezogene MemoryFeder ausgebildet, die sich bei höheren Temperaturen infolge der aus einem Brandfall resultierenden Wärmeentwicklung ausdehnt und den Schließteller 7 in Schließstellung auf die Lufteintrittsöffnung 2 drückt. Der Schließteller 7 ist nach dem Ausführungsbeispiel in Offenstellung mittels eines wärmeempfindlichen Klebers 8 an der zugeordneten Gehäuseseite angeklebt.In the figures there is a fire protection shut-off device for Ventilation ducts shown, the air flow through Arrows is indicated. This fire protection shut-off device consists in its basic structure of a built-in housing 1 with an air inlet opening 2 and an air outlet opening 3, the air inlet opening 2 by means of a shut-off device can be shut off and the shut-off device is held in the open position under spring loading and at the specified temperature in the closed position. in the Individual has the installation housing 1 at its the air inlet opening 2 opposite housing side a guide socket 4 for a guide rod 5 on the shut-off device and a closing spring 6 surrounding the guide rod 5. The Shut-off device is designed as a closing plate 7. The Closing spring 6 is contracted as at room temperature Memory spring designed that can withstand higher temperatures due to the heat generated by a fire expands and the locking plate 7 in the closed position presses on the air inlet opening 2. The locking plate 7 is in the open position by means of the embodiment a heat sensitive adhesive 8 on the associated Glued on the housing side.

Das Einbaugehäuse 1 ist als Flachgehäuse mit einer Grundplatte 9 mit der Lufteintrittsöffnung 2 und mit einer auf der Grundplatte unter Bildung von randseitigen Einbauflanschen 10 befestigten Abdeckhaube 11 ausgebildet. Die Abdeckhaube 11 weist unter Bildung der Luftaustrittsöffnung 3 eine offene Stirnseite auf. Der Führungsstutzen 4 ist außenseitig auf der Abdeckhaube 11 angeordnet. Die Lufteintrittsöffnung 2 weist einen eingezogenen Innenrand 12 auf, der unter Ringspaltbildung von einer feuerwiderstandsfähigen Platte oder Platten 13 aus zum Beispiel Kalziumsilikat umgeben ist. Der Schließteller 7 weist einen Außenrand 14 auf, der in Schließstellung des Schließtellers 7 auf der Lufteintrittsöffnung 2 in den Ringspalt 15 eingreift und den Innenrand 12 der Lufteintrittsöffnung 2 umgreift. Das Einbaugehäuse 1 bzw. dessen Abdeckhaube 11 ist von feuerwiderstandsfähigen Platten 16 oder einem feuerwiderstandsfähigen Ausbau in Haubenhöhe umgeben. Die von einer Platte 16 oder dem Ausbau begrenzte Luftaustrittsöffnung 3 mündet in einen platten- bzw. haubenparallelen Lüftungskanal 17. The installation housing 1 is a flat housing with a base plate 9 with the air inlet opening 2 and with one the base plate with the formation of mounting flanges on the edge 10 attached cover 11 formed. The Cover 11 points to form the air outlet opening 3 an open end face. The guide socket 4 is arranged on the outside on the cover 11. The air inlet opening 2 has a retracted inner edge 12 on, forming an annular gap from a fire resistant Plate or plates 13 made of calcium silicate, for example is surrounded. The locking plate 7 has one Outer edge 14 on the closed position of the locking plate 7 on the air inlet opening 2 in the annular gap 15 engages and the inner edge 12 of the air inlet opening 2 embraces. The installation housing 1 or its cover 11 is of fire-resistant panels 16 or a fire-resistant Surrounded at hood height. The of a plate 16 or the expansion limited air outlet opening 3 opens into a plate or hood parallel Ventilation duct 17.

Die Schließfeder 6 umgibt die Führungsstange 5 mit vorgegebenem Bewegungsspiel und selbst mit vorgegebenem Bewegungsspiel in den Führungsstutzen 4 eingesetzt. Ferner kann die Schließfeder 6 mit ihrem einen Ende an dem Führungsstutzen 4 und mit ihrem anderen Ende am Fuß der Führungsstange 5 und/oder auf dem Schließteller 7 befestigt sein.The closing spring 6 surrounds the guide rod 5 with a predetermined Movement game and even with a predetermined movement game inserted in the guide socket 4. Furthermore, the Closing spring 6 with one end on the guide stub 4 and with its other end at the foot of the guide rod 5 and / or be attached to the locking plate 7.

Der infolge Wärmeausdehnung von der Memory-Feder in Schließstellung gedrückte Schließteller 7 ist gestrichelt angedeutet.The result of thermal expansion from the memory spring in the closed position pressed closing plate 7 is indicated by dashed lines.

Claims (7)

  1. A fireproof shut-off device for ventilation ducts, consisting of a built-in housing (1) having an air inlet opening (2) and an air outlet opening (3), wherein the air inlet opening (2) can be shut off by means of a shut-off element constructed as a closing plate (7) and the shut-off element is held in the open position under the action of a spring and snaps into the closed position at a predetermined temperature, and wherein the built-in housing (1) comprises a guide sleeve (4) for a guide rod (5) on the shut-off element, and comprises a closing spring (6) which surrounds the guide rod (5), characterised in that the closing spring (6) is constructed as a memory spring, and that the built-in housing (1) is constructed as a shallow housing comprising a baseplate (9) with the air inlet opening (2) and comprising a covering cap (11) with the outlet opening (3), which covering cap is fixed to the baseplate (9) forming built-in flanges (10) at the edges, wherein the guide sleeve (4) is disposed outside on the covering cap (11), on the opposite side of the housing to the air inlet opening (2).
  2. A fireproof shut-off device according to claim 1, characterised in that the closing plate (7) is adhesively bonded in its open position to the associated side of the housing by means of a heat-sensitive adhesive (8).
  3. A fireproof shut-off device according to claims 1 or 2, characterised in that the covering cap has an open end face forming the air outlet opening (3).
  4. A fireproof shut-off device according to any one of claims 1 to 3, characterised in that the air inlet opening (2) has a drawn-in inner edge (12) which is surrounded by a fire-resistant board or boards (13) made of calcium silicate, for example, with the formation of an annular gap, and that the closing plate (7) has an outer edge (14) which, in the closed position of the closing plate (7), fits into the annular gap (15) on the air inlet opening (2) and fits round the inner edge (12) of the air inlet opening (2).
  5. A fireproof shut-off device according to any one of claims 1 to 4, characterised in that the closing spring (6) surrounds the guide rod (5) with a predetermined motional clearance and is inserted in the guide sleeve (4) with a predetermined motional clearance.
  6. A fireproof shut-off device according to any one of claims 1 to 5, characterised in that the closing spring (6) is fixed at one end to the guide sleeve (4) and is fixed at its other end to the base of the guide rod (5) and/or to the closing plate (7).
  7. A fireproof shut-off device according to any one of claims 1 to 6, characterised in that the built-in housing (1) or the covering cap (11) thereof is surrounded by fire-resistant boards (16) at the height of the cap, and the air outlet opening (3), which is delimited by a board (16), leads into a ventilation duct (17) which is parallel to the board or to the cap.
EP95116150A 1995-02-18 1995-10-13 Fire preventive blocking device for ventilation channels Expired - Lifetime EP0732125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19505648A DE19505648C1 (en) 1995-02-18 1995-02-18 Fire protection closure device for ventilation channels
DE19505648 1995-02-18

Publications (3)

Publication Number Publication Date
EP0732125A2 EP0732125A2 (en) 1996-09-18
EP0732125A3 EP0732125A3 (en) 1997-08-20
EP0732125B1 true EP0732125B1 (en) 1999-09-15

Family

ID=7754423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116150A Expired - Lifetime EP0732125B1 (en) 1995-02-18 1995-10-13 Fire preventive blocking device for ventilation channels

Country Status (3)

Country Link
EP (1) EP0732125B1 (en)
AT (1) ATE184497T1 (en)
DE (1) DE19505648C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043810A2 (en) 2000-12-01 2002-06-06 Tri-Air Innovations Limited Air flow controller and fire damper in an air flow duct

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1061548A (en) * 1965-07-22 1967-03-15 Gustaf Harald Bodin Improvements in or relating to valve devices for ventilation ducts
FR2234501A1 (en) * 1973-06-22 1975-01-17 Electromecanique Ind Soc Gen Fire safety closure for ventilation duct - has spring loaded plug held open by fusible ring on plug mounting shaft
FR2286351A1 (en) * 1974-09-27 1976-04-23 Vierling Charles Fire barrier flaps for ventilator duct - has nylon cords to release folded back flaps to block opening when heated
NO133870C (en) * 1975-01-31 1976-07-14 Ole A Larsen
US4146048A (en) * 1977-05-02 1979-03-27 Prefco Productions, Inc. Fire damper and method of fabrication
GB2203646B (en) * 1987-04-23 1991-02-13 Actionair Equip Combination thermal actuator and fusible link, especially for fire and/or smoke dampers
DE3813170A1 (en) * 1988-04-20 1989-11-02 Friedrich Rathgeber Kg Regelte Thermally controllable shut-off device in pipelines for gaseous flow media

Also Published As

Publication number Publication date
ATE184497T1 (en) 1999-10-15
EP0732125A3 (en) 1997-08-20
DE19505648C1 (en) 1996-03-14
EP0732125A2 (en) 1996-09-18

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