EP0396785A1 - Device for the obstruction of ventilation installations - Google Patents
Device for the obstruction of ventilation installations Download PDFInfo
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- EP0396785A1 EP0396785A1 EP89105492A EP89105492A EP0396785A1 EP 0396785 A1 EP0396785 A1 EP 0396785A1 EP 89105492 A EP89105492 A EP 89105492A EP 89105492 A EP89105492 A EP 89105492A EP 0396785 A1 EP0396785 A1 EP 0396785A1
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- ventilation
- slats
- frame
- cross
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/12—Hinged dampers
- A62C2/14—Hinged dampers with two or more blades
Definitions
- the invention relates to a device for shutting off ventilation devices such as ventilation ducts, ventilation passages, ventilation closures and / or the like against the passage of heat, flames, gases and possibly smoke with a cross-section of the ventilation device through the cross-section of flow-arranged, mutually spaced lamellae from a in Fire foaming and hermetically sealing the cross-section.
- ventilation devices such as ventilation ducts, ventilation passages, ventilation closures and / or the like against the passage of heat, flames, gases and possibly smoke
- a cross-section of the ventilation device through the cross-section of flow-arranged, mutually spaced lamellae from a in Fire foaming and hermetically sealing the cross-section.
- a so-called fire protection cartridge is also known, which is installed in the ventilation cross section, for example, in the ceiling area of a ventilation system.
- This is a block that crosses the cross section of a ventilation device and consists of lamellae arranged parallel to one another in the flow direction and between which the air normally flows.
- the slats consist of strips of a foaming sealant that reacts above a certain temperature. These strips foam up in the event of a fire and close the gaps between them, so that heat, flames and gases from the source of the fire cannot reach the neighboring rooms via the ventilation system.
- the disadvantage of the known construction is that the hermetic closure in the event of fire takes place only after a longer reaction time and only at higher temperatures, which is above the reaction temperature of the foaming material.
- shut-off device reacts relatively slowly depending on the response behavior of the fire protection panels. If no heat is generated in the event of damage, which could cause the sealing compound to foam, the known shut-off device does not respond, so that cold smoke or harmful gases, for example, can reach the other rooms through the ventilation system without hindrance. Finally, functional tests cannot be carried out with the known shut-off device, since the fire protection cartridge in the event of a fire is used up after sealing and must be replaced with a new cartridge. Reversible sealing tests are not possible.
- the invention is therefore based on the object of developing a device for shutting off ventilation devices in accordance with the generic term in such a way that they provide permanent fire protection partitioning of ventilation devices of the above-mentioned type also enables a strong differential pressure, depending on different temperature ranges, gradually reacts in the sense of increasing closing of the ventilation device, is simple in construction and is therefore inexpensive to manufacture, and simple maintenance can be ensured at the longest possible intervals and can be integrated into a component.
- the slats are adjustable in such a way that the cross section of the ventilation device can be repeatedly closed in a gastight manner at a temperature below the reaction temperature of the sealing material.
- the adjustable slats can be rotatably mounted about an axis which is arranged in a plane which extends perpendicular to the longitudinal axis of the ventilation device and thus perpendicular to the direction of flow of the air.
- the adjustability of the slats can be facilitated in that they are arranged in a frame extending through the ventilation device, the rotatable or pivotable slats being clamped onto a respective rotating plate arranged at their ends, which in turn are rotatably mounted in the frame walls opposite one another.
- the frame which is preferably made of a material with low thermal conductivity, can be U-shaped in cross section and can have foaming strips of sealing material on its vertical inner sides of the frame in the event of a fire.
- an H-shaped arrangement results in the closed state, i.e. a grid with vertically or horizontally arranged slats, the slat material foaming in the event of a fire and thereby achieving a stable sealing compound with optimal tightness, since the slat grille the greatest possible against lateral support and thus has great inherent stability.
- the rotatable or swiveling slats can advantageously be adjusted together using a lever system, so that they close the space between two fixed slats. If the above-described advantageous H-shaped lattice construction is to be achieved, then the length of the rotatably mounted slats is dimensioned such that they exactly seal the space between two fixed slats. If, on the other hand, a different closure construction is selected, for example the adjustment of all the slats, then an overlap of the slats can also be provided in the locked state.
- the lever system used to control the rotatable or pivotable slats is actuated by means of a control device which responds to heat and / or smoke.
- This control device can be formed, for example, by a thermocouple acting against the pressure of a return spring, or by an alloyed memory metal, which returns the pivoted fins to their starting position when they cool below the triggering temperature.
- the control device can be formed by a device coupled to a smoke detector, so that it is thereby achieved that the shut-off device functions even when insufficient heat is generated in the event of damage, which could trigger a thermally responsive control device.
- the device according to the invention does not trip at temperatures up to 65 ° C for at least one hour, starts from 70 ° C with the release, ie with the rotary movement of the rotatably and pivotably mounted slats, and in which the sealing material foams at about 100 ° C, which then leads to the desired permanent isolation even against strong differential pressure.
- the device according to the invention is reversible in lower temperature ranges below 100 ° C. and Therefore, in these temperature ranges, their functionality can be tested several times at intervals. Only after a fire, in which the sealing material is foamed, is it necessary to replace the lamella block.
- control device is arranged at the top and bottom of the frame profile.
- the movable and / or permanently installed slats are provided with additional lip seals in order to achieve an even greater tightness against smoke.
- the seals can advantageously be arranged at least on the narrow end faces of the adjustable slats and / or be located in the region of the longitudinal center plane of the fixed slats.
- the shut-off device quickly closes the entire cross-sectional area of the ventilation device in the first minutes after the fire, so that the relatively slow response of the sealing fire protection material is compensated for by the additional, mechanical triggering.
- the solid insulating mass produced after the foaming guarantees permanent, hermetic sealing of the ventilation system against the passage of heat, flames, gases and smoke, even under strong, positive differential pressure.
- no foaming of the sealing material occurs, so that the pivoted slats are returned to their starting position via a return spring system or when cooling via a memory metal and return to their original position and function.
- the shut-off device can therefore be tested periodically to determine whether there is a thermal release, and it can then test the original function of the device direction are restored, in which the cross section of the ventilation device allows unimpeded passage of air.
- the shut-off device 1 is installed in a ventilation duct 2, with slats 4 arranged vertically in a frame 3 which pass through the ventilation duct 2. These fins are arranged in the flow direction of the air flowing through the ventilation line 2 parallel and at a distance from each other, so that the air can flow through the shut-off device 1 in the direction of arrow 5.
- adjustable slats 6, 7 and 8 are provided, ie rotatable or pivotable about their central axis arranged perpendicular to the plane of the drawing, while fixed slats 9, 10 etc. are arranged in between.
- the frame 3 is U-shaped in cross-section and on the vertical frame inside foaming strips 11, 12 are attached, which guarantee sealing of this critical edge area in the event of a fire.
- the pivotable slats are clamped with their central axis at their upper and lower ends in the turntables provided there, which enable each adjustable slat to pivot by 90 °.
- Each turntable has a pivot lever 14, and the individual pivot levers are connected to a linkage 15, which can be moved via a control device 16 in the direction of arrow 17 against the force of a return spring 18.
- the control device in the present case is a thermocouple which, at a temperature of approximately 70 ° C., adjusts the linkage 15 in the direction of arrow 17 against the force of the return spring 18 and thus rotates the adjustable slats 6, 7 and 8 until they assume the position shown in FIG. 3, in which they seal the space between the fixed slats 9, 10 or between the fixed slats and and the foaming strips 11, 12.
- the control device 16 is arranged with the pivot levers 14 in the embodiment shown above and below in the frame profile. As long as the reaction temperature of the foaming material of at least 100 ° C is not reached, the pivoted fins 6, 7 and 8 return to the position shown in Fig. 2 after cooling below the trigger temperature of about 70 ° C, so that the ventilation grille returns to its original form and function.
- the sealing material of the adjusted slats foams, so that an approximately H-shaped slat grid is formed, which due to the mutual connection of the sealing masses and the support structure of the slat body has great inherent stability and ensures permanent, hermetic sealing of the shut-off device against the passage of heat, flames, gases and smoke even under strong, positive differential pressure.
- the lamellae can consist entirely of material foaming in the event of fire or have a stable support structure which is coated with the aforementioned material.
- the latter has the advantage that a support structure or lattice structure is retained in the event of a fire, which optimally withstands a considerable differential pressure.
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Special Wing (AREA)
- Air-Flow Control Members (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Ventilation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Absperren von Lüftungseinrichtungen wie Lüftungsleitungen, Lüftungsdurchlässen, Lüftungsabschlüssen und/oder dergleichen gegen den Durchtritt von Hitze, Flammen, Gasen und gegebenenfalls Rauch mit einem den Querschnitt der Lüftungseinrichtung durchgreifenden Block von in Strömungsrichtung angeordneten, zueinander beabstandeten Lamellen aus einem im Brandfall aufschäumenden und den Querschnitt hermetisch abdichtenden Material.The invention relates to a device for shutting off ventilation devices such as ventilation ducts, ventilation passages, ventilation closures and / or the like against the passage of heat, flames, gases and possibly smoke with a cross-section of the ventilation device through the cross-section of flow-arranged, mutually spaced lamellae from a in Fire foaming and hermetically sealing the cross-section.
Vorrichtungen, die Lüftungseinrichtungen der obengenannten Art im Brandfall abschatten, sind bekannt. So sind beispielsweise Brandschutzklappen vorgesehen, die durch Brandwände hindurchgeführte Lüftungsleitungen unter Verwendung von zumeist (elektro-)motorischen Antrieben und entsprechender Auslösemechanismen im Brandfalle verschließen. Diese Konstruktionen sind in der Herstellung und in der Montage sehr aufwendig und teuer, stellen optische Beeinträchtigungen der Bauteile dar und verlangen eine regelmäßige Wartung an oft schwer zugänglichen Stellen.Devices that shade ventilation devices of the type mentioned above in the event of a fire are known. For example, fire dampers are provided that close ventilation ducts that are routed through fire walls using mostly (electro) motor drives and corresponding trigger mechanisms in the event of a fire. These constructions are very complex and expensive to manufacture and assemble, represent optical impairments of the components and require regular maintenance in places that are often difficult to access.
Es ist ferner eine sogenannte Brandschutzpatrone bekannt, die beispielsweise im Deckenbereich eines Lüftungssystems in den Lüftungsquerschnitt eingebaut ist. Es handelt sich hierbei um einen den Querschnitt einer Lüftungseinrichtung durchgreifenden Block aus in Strömungsrichtung parallel angeordneten, zueinander beabstandeten Lamellen, zwischen denen die Luft im Normalfall hindurchströmt. Die Lamellen bestehen aus Streifen einer aufschäumenden Dichtungsmasse, die ab einer bestimmten Temperatur reagiert. Diese Streifen schäumen im Brandfall auf und verschließen die zwischen ihnen bestehenden Zwischenräume, so daß Hitze, Flammen und Gase vom Brandherd nicht über das Lüftungssystem zu benachbarten Räumen gelangen können. Der Nachteil der bekannten Konstruktion besteht darin, daß der hermetische Verschluß im Brandfalle erst nach einer längeren Reaktionszeit erfolgt und auch nur bei höheren Temperaturen, die oberhalb der Reaktionstemperatur des aufschäumenden Materials liegt. Das bedeutet, daß in den ersten Minuten nach dem Brand ein schnelles Verschließen der gesamten Querschnittsfläche nicht erreicht wird, d.h., daß die Absperrvorrichtung in Abhängigkeit von dem Ansprechverhalten der Brandschutzplatten relativ träge reagiert. Wird im Schadensfalle keine Hitze erzeugt, die ein Aufschäumen der Dichtungsmasse hervorrufen könnte, so spricht die bekannte Absperrvorrichtung nicht an, so daß beispielsweise kalter Rauch oder schädliche Gase ungehindert über das Lüftungssystem in andere Räume gelangen können. Schließlich können Funktionstests mit der bekannten Absperrvorrichtung nicht durchgeführt werden, da die Brandschutzpatrone im Brandfalle nach erfolgter Abdichtung verbraucht ist und gegen eine neue Patrone ausgewechselt werden muß. Reversible Tests der Abdichtung sind nicht möglich.A so-called fire protection cartridge is also known, which is installed in the ventilation cross section, for example, in the ceiling area of a ventilation system. This is a block that crosses the cross section of a ventilation device and consists of lamellae arranged parallel to one another in the flow direction and between which the air normally flows. The slats consist of strips of a foaming sealant that reacts above a certain temperature. These strips foam up in the event of a fire and close the gaps between them, so that heat, flames and gases from the source of the fire cannot reach the neighboring rooms via the ventilation system. The disadvantage of the known construction is that the hermetic closure in the event of fire takes place only after a longer reaction time and only at higher temperatures, which is above the reaction temperature of the foaming material. This means that the entire cross-sectional area cannot be closed quickly in the first minutes after the fire, i.e. that the shut-off device reacts relatively slowly depending on the response behavior of the fire protection panels. If no heat is generated in the event of damage, which could cause the sealing compound to foam, the known shut-off device does not respond, so that cold smoke or harmful gases, for example, can reach the other rooms through the ventilation system without hindrance. Finally, functional tests cannot be carried out with the known shut-off device, since the fire protection cartridge in the event of a fire is used up after sealing and must be replaced with a new cartridge. Reversible sealing tests are not possible.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zum Absperren von Lüftungseinrichtungen gemäß dem Gattungsbegriff derart weiterzubilden, daß sie eine dauerhafte brandschutztechnische Abschottung von Lüftungseinrichtungen der obengenannten Art auch gegen starken Differenzdruck ermöglicht, in Abhängigkeit von unterschiedlichen Temperaturbereichen stufenweise im Sinne eines zunehmenden Verschließens der Lüftungseinrichtung reagiert, einfach aufgebaut und daher billig herzustellen ist und eine einfache Wartung in möglichst langen zeitlichen Abständen gewährleistet sowie in ein Bauteil integriert sein kann.The invention is therefore based on the object of developing a device for shutting off ventilation devices in accordance with the generic term in such a way that they provide permanent fire protection partitioning of ventilation devices of the above-mentioned type also enables a strong differential pressure, depending on different temperature ranges, gradually reacts in the sense of increasing closing of the ventilation device, is simple in construction and is therefore inexpensive to manufacture, and simple maintenance can be ensured at the longest possible intervals and can be integrated into a component.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß wenigstens einige der Lamellen verstellbar sind, derart, daß der Querschnitt der Lüftungseinrichtung bei einer Temperatur unterhalb der Reaktionstemperatur des abdichtenden Materials wiederholt gasdicht verschließbar ist. Die verstellbaren Lamellen können um eine Achse drehbar gelagert sein, die jeweils in einer Ebene angeordnet ist, welche sich senkrecht zu der Längsachse der Lüftungseinrichtung und damit senkrecht zur Strömungsrichtung der Luft erstreckt. Die Verstellbarkeit der Lamellen kann dadurch erleichtert werden, daß diese in einem die Lüftungseinrichtung durchgreifenden Rahmen angeordnet sind, wobei die dreh- oder schwenkbaren Lamellen auf je einen an ihren Enden angeordneten Drehteller aufgeklemmt sind, die ihrerseits in den einander gegenüberliegenden Rahmenwänden drehbar gelagert sind. Der Rahmen, der vorzugsweise aus einem Material mit geringer Wärmeleitfähigkeit besteht, kann im Querschnitt U-förmig ausgebildet sein und an seinen senkrechten Rahmeninnenseiten im Brandfall aufschäumende Streifen aus abdichtendem Material aufweisen. Darüber hinaus kann in vorteilhafterweise vorgesehen sein daß nur jede zweite Lamelle dreh- oder schwenkbar ist und gegen eine benachbarte, festinstallierte Lamelle anstellbar ist. Wenn die Lamellen in die Schließstellung geschwenkt werden, ergibt sich eine H-förmige Anordnung im geschlossenen Zustand, d.h. ein Gitter mit senkrecht oder waagerecht angeordneten Lamellen, wobei das Lamellenmaterial im Brandfalle aufschäumt und dadurch eine stabile Dichtmasse mit optimaler Dichtigkeit erzielt wird, da das Lamellengitter eine größtmögliche gegen seitige Abstützung und somit eine große Eigenstabilität besitzt.This object is achieved according to the invention in that at least some of the slats are adjustable in such a way that the cross section of the ventilation device can be repeatedly closed in a gastight manner at a temperature below the reaction temperature of the sealing material. The adjustable slats can be rotatably mounted about an axis which is arranged in a plane which extends perpendicular to the longitudinal axis of the ventilation device and thus perpendicular to the direction of flow of the air. The adjustability of the slats can be facilitated in that they are arranged in a frame extending through the ventilation device, the rotatable or pivotable slats being clamped onto a respective rotating plate arranged at their ends, which in turn are rotatably mounted in the frame walls opposite one another. The frame, which is preferably made of a material with low thermal conductivity, can be U-shaped in cross section and can have foaming strips of sealing material on its vertical inner sides of the frame in the event of a fire. In addition, it can advantageously be provided that only every second slat can be rotated or pivoted and can be adjusted against an adjacent, permanently installed slat. If the slats are pivoted into the closed position, an H-shaped arrangement results in the closed state, i.e. a grid with vertically or horizontally arranged slats, the slat material foaming in the event of a fire and thereby achieving a stable sealing compound with optimal tightness, since the slat grille the greatest possible against lateral support and thus has great inherent stability.
Die dreh- oder schwenkbaren Lamellen können in vorteilhafter Weise über ein Hebelsystem gemeinsam verstellt werden, so daß sie den Zwischenraum zwischen zwei festinstallierten Lamellen verschließen. Wenn die vorbeschriebene vorteilhafte H-förmige Gitterkonstruktion erzielt werden soll, dann ist die Länge der drehbar gelagerten Lamellen derart bemessen, daß sie genau den Zwischenraum zwischen zwei festinstallierten Lamellen abdichten. Wenn dagegen eine andere Verschlußkonstruktion gewählt wird, beispielsweise die Verstellung aller Lamellen, dann kann auch eine Überlappung der Lamellen im Verschlußzustand vorgesehen sein.The rotatable or swiveling slats can advantageously be adjusted together using a lever system, so that they close the space between two fixed slats. If the above-described advantageous H-shaped lattice construction is to be achieved, then the length of the rotatably mounted slats is dimensioned such that they exactly seal the space between two fixed slats. If, on the other hand, a different closure construction is selected, for example the adjustment of all the slats, then an overlap of the slats can also be provided in the locked state.
Das zur Steuerung der dreh- oder schwenkbaren Lamellen verwendete Hebelsystem wird mittels einer Steuereinrichtung betätigt, die auf Wärme und/oder Rauch anspricht. Diese Steuereinrichtung kann beispielsweise von einem gegen den Druck einer Rückstellfeder wirkenden Thermoelement gebildet sein, oder von einem legierten Memory-Metall, welches die verschwenkten Lamellen bei Abkühlung unter die Auslösetemperatur wieder in ihre Ausgangslage zurückstellt. Die Steuereinrichtung kann von einer mit einem Rauchmelder gekoppelten Einrichtung gebildet sein, so daß hierdurch erreicht wird, daß die Absperrvorrichtung auch dann funktioniert, wenn im Schadensfall keine ausreichende Wärme erzeugt wird, die eine thermisch ansprechende Steuereinrichtung auslösen könnte. Im wesentlichen ist vorgesehen, daß die erfindungsgemäße Vorrichtung bei Temperaturen bis 65° C über mindestens eine Stunde nicht auslöst, ab 70° C mit der Auslösung, d.h. mit der Drehbewegung der dreh- und schwenkbar gelagerten Lamellen beginnt und bei der ein Aufschäumen des abdichtenden Materials bei etwa 100° C erfolgt, was dann zu der angestrebten dauerhaften Abschottung auch gegen starken Differenzdruck führt. D.h. also, daß die erfindungsgemäße Vorrichtung in unteren Temperaturbereichen unterhalb 100° C reversibel ist und daher in diesen Temperaturbereichen auf ihre Funktionsfähigkeit mehrfach in zeitlichen Abständen getestet werden kann. Erst nach einem Brandfall, bei welchem das abdichtende Material aufgeschäumt ist, ist der Austausch des Lamellenblocks erforderlich.The lever system used to control the rotatable or pivotable slats is actuated by means of a control device which responds to heat and / or smoke. This control device can be formed, for example, by a thermocouple acting against the pressure of a return spring, or by an alloyed memory metal, which returns the pivoted fins to their starting position when they cool below the triggering temperature. The control device can be formed by a device coupled to a smoke detector, so that it is thereby achieved that the shut-off device functions even when insufficient heat is generated in the event of damage, which could trigger a thermally responsive control device. Essentially, it is provided that the device according to the invention does not trip at temperatures up to 65 ° C for at least one hour, starts from 70 ° C with the release, ie with the rotary movement of the rotatably and pivotably mounted slats, and in which the sealing material foams at about 100 ° C, which then leads to the desired permanent isolation even against strong differential pressure. This means that the device according to the invention is reversible in lower temperature ranges below 100 ° C. and Therefore, in these temperature ranges, their functionality can be tested several times at intervals. Only after a fire, in which the sealing material is foamed, is it necessary to replace the lamella block.
Damit eine störungsfreie Steuerung der Schwenkmechanik gewährleistet ist, ist vorteilhaft vorgesehen, daß die Steuereinrichtung oben und unten im Rahmenprofil angeordnet ist.In order to ensure trouble-free control of the swivel mechanism, it is advantageously provided that the control device is arranged at the top and bottom of the frame profile.
Es ist gemäß einem weiteren vorteilhaften Merkmal der Erfindung ferner denkbar, daß die beweglichen und/oder festinstallierten Lamellen zur Erreichung einer noch größeren Dichtigkeit gegen Rauch mit zusätzlichen Lippen-Dichtungen versehen sind. Die Dichtungen können vorteilhaft wenigstens an den schmalen Stirnseiten der verstellbaren Lamellen angeordnet sein und/oder sich im Bereich der Längsmittelebene der festinstallierten Lamellen befinden.According to a further advantageous feature of the invention, it is also conceivable that the movable and / or permanently installed slats are provided with additional lip seals in order to achieve an even greater tightness against smoke. The seals can advantageously be arranged at least on the narrow end faces of the adjustable slats and / or be located in the region of the longitudinal center plane of the fixed slats.
Durch die erfindungsgemäße Absperrvorrichtung wird in den ersten Minuten nach dem Brand ein schnelles Verschließen der gesamten Querschnittsfläche der Lüftungseinrichtung erreicht, so daß das relativ träge Ansprechverhalten des abdichtenden Brandschutzmaterials durch die zusätzliche, mechanische Auslösung ausgeglichen wird. Die feste, nach der Aufschäumung erzeugte isolierende Masse garantiert eine dauerhafte, hermetische Abschottung der Lüftungseinrichtung gegen den Durchtritt von Hitze, Flammen, Gasen und Rauch, auch unter starkem, positivem Differenzdruck. Im Reversibilitätsbereich, d.h. in einem Temperaturbereich unter 100° C tritt kein Aufschäumen des abdichtenden Materials ein, so daß die geschwenkten Lamellen über ein Rückholfedersystem oder beim Abkühlen über ein Memory-Metall in ihre Ausgangsstellung zurückgeführt werden und ihre ursprüngliche Lage und Funktion wieder einnehmen. Die Absperrvorrichtung kann daher periodisch getestet werden, ob eine thermische Auslösung erfolgt, und es kann anschließend die ursprüngliche Funktion der Vor richtung wieder hergestellt werden, bei welcher der Querschnitt der Lüfungseinrichtung einen ungehinderten Durchtritt von Luft ermöglicht.The shut-off device according to the invention quickly closes the entire cross-sectional area of the ventilation device in the first minutes after the fire, so that the relatively slow response of the sealing fire protection material is compensated for by the additional, mechanical triggering. The solid insulating mass produced after the foaming guarantees permanent, hermetic sealing of the ventilation system against the passage of heat, flames, gases and smoke, even under strong, positive differential pressure. In the reversibility range, ie in a temperature range below 100 ° C, no foaming of the sealing material occurs, so that the pivoted slats are returned to their starting position via a return spring system or when cooling via a memory metal and return to their original position and function. The shut-off device can therefore be tested periodically to determine whether there is a thermal release, and it can then test the original function of the device direction are restored, in which the cross section of the ventilation device allows unimpeded passage of air.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels anhand der Zeichnung. Darin zeigen:
- Fig. 1 eine schematische Darstellung einer Lüftungsleitung mit eingebauter Absperrvorrichtung;
- Fig. 2 einen Querschnitt durch die erfindungsgemäße Absperrvorrichtung, wobei sich diese in geöffneter Stellung befindet;
- Fig. 3 eine Ansicht gemäß Fig. 2 mit sich in geschlossener Stellung befindlicher Absperrvorrichtung, und
- Fig. 4 die Profilkonstruktion nach dem Aufschäumvorgang.
- Figure 1 is a schematic representation of a ventilation duct with built-in shut-off device.
- Figure 2 shows a cross section through the shut-off device according to the invention, this being in the open position;
- Fig. 3 is a view of FIG. 2 with the shut-off device in the closed position, and
- Fig. 4 shows the profile construction after the foaming process.
Bei der in der Fig. 1 gezeigten schematischen Ansicht ist die erfindungsgemäße Absperrvorrichtung 1 in eine Lüftungsleitung 2 eingebaut, wobei in einem Rahmen 3 senkrecht angeordnete Lamellen 4 gelagert sind, die die Lüftungsleitung 2 durchgreifen. Diese Lamellen sind in Strömungsrichtung der die Lüftungsleitungsleitung 2 durchströmenden Luft parallel und im Abstand zueinander angeordnet, so daß die Luft in Richtung des Pfeiles 5 die Absperrvorrichtung 1 durchströmen kann.In the schematic view shown in FIG. 1, the shut-off device 1 according to the invention is installed in a
Aus dem Querschnitt der Fig. 2 ist zu entnehmen, daß verstellbare, d.h. um ihre senkrecht zur Zeichenebene angeordnete Mittelachse dreh- oder schwenkbare Lamellen 6, 7 und 8 vorgesehen sind, während dazwischen festinstallierte Lamellen 9, 10 usw. angeordnet sind. Der Rahmen 3 ist im Querschnitt U-förmig ausgebildet, und an den senkrechten Rahmeninnensei ten sind aufschäumende Streifen 11, 12 angebracht, die im Brandfall eine Abdichtung dieses kritischen Randbereiches garantieren.From the cross section of FIG. 2 it can be seen that
Die schwenkbaren Lamellen sind mit ihrer Mittelachse an ihrem oberen und unteren Ende in dort vorgesehenen Drehtellern eingeklemmt, die eine Schwenkbewegung jeder verstellbaren Lamelle um 90° ermöglichen. Jeder Drehteller besitzt einen Schwenkhebel 14, und die einzelnen Schwenkhebel sind mit einem Gestänge 15 verbunden, welches über eine Steuereinrichtung 16 in Richtung des Pfeiles 17 entgegen der Kraft einer Rückstellfeder 18 bewegbar ist. Bei der Steuereinrichtung handelt es sich im vorliegenden Fall um ein Thermoelement, welches bei einer Temperatur von ca. 70° C eine Verstellung des Gestänges 15 in Richtung des Pfeiles 17 entgegen der Kraft der Rückstellfeder 18 durchführt und damit eine Drehbewegung der verstellbaren Lamellen 6, 7 und 8 durchführt, bis diese die in der Fig. 3 gezeigte Lage einnehmen, in welcher sie den Zwischenraum zwischen den festen Lamellen 9, 10 bzw. zwischen den festen Lamellen und und den aufschäumenden Streifen 11, 12 abdichten.The pivotable slats are clamped with their central axis at their upper and lower ends in the turntables provided there, which enable each adjustable slat to pivot by 90 °. Each turntable has a
Die Steuereinrichtung 16 ist mit den Schwenkhebeln 14 bei dem gezeigten Ausführungsbeispiel oben und unten im Rahmenprofil angeordnet. Solange die Reaktionstemperatur des aufschäumenden Materials von mindestens 100° C nicht erreicht wird, stellen sich die verschwenkten Lamellen 6, 7 und 8 nach Abkühlung unter die Auslösetemperatur von ca. 70° C in die in Fig. 2 gezeigte Lage zurück, so daß das Lüftungsgitter seine ursprüngliche Form und Funktion wieder einnimmt.The
Im Brandfalle, bei welchem Temperaturen über 100° C auftreten, schäumt das abdichtende Material der verstellten Lamellen auf, so daß ein in etwa H-förmiges Lamellengitter gebildet wird, welches infolge der gegenseitigen Verbindung der abdichtenden Massen und der Stützstruktur der Lamellenkörper eine große Eigenstabilität besitzt und eine dauerhafte, hermetische Abschottung der Absperrvorrichtung gegen den Durchtritt von Hitze, Flammen, Gasen und Rauch auch unter starkem, positivem Differenzdruck gewährleistet.In the event of a fire, at which temperatures exceed 100 ° C, the sealing material of the adjusted slats foams, so that an approximately H-shaped slat grid is formed, which due to the mutual connection of the sealing masses and the support structure of the slat body has great inherent stability and ensures permanent, hermetic sealing of the shut-off device against the passage of heat, flames, gases and smoke even under strong, positive differential pressure.
Die Lamellen können vollständig aus im Brandfall aufschäumendem Material bestehen oder eine stabile Stützstruktur aufweisen, welche mit dem vorgenannten Material beschichtet ist. Letzteres hat den Vorteil, daß eine Stützstruktur oder Gitterstruktur im Brandfalle erhalten bleibt, welche einem erheblichen Differenzdruck optimal standhält.The lamellae can consist entirely of material foaming in the event of fire or have a stable support structure which is coated with the aforementioned material. The latter has the advantage that a support structure or lattice structure is retained in the event of a fire, which optimally withstands a considerable differential pressure.
Claims (19)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP89105492A EP0396785B1 (en) | 1989-03-28 | 1989-03-28 | Device for the obstruction of ventilation installations |
DE58909690T DE58909690D1 (en) | 1989-03-28 | 1989-03-28 | Device for shutting off ventilation devices |
AT89105492T ATE139134T1 (en) | 1989-03-28 | 1989-03-28 | DEVICE FOR CLOSING VENTILATION DEVICES |
ES89105492T ES2087856T3 (en) | 1989-03-28 | 1989-03-28 | DEVICE FOR CLOSING AERATION DEVICES. |
GR960401678T GR3020308T3 (en) | 1989-03-28 | 1996-06-20 | Device for the obstruction of ventilation installations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP89105492A EP0396785B1 (en) | 1989-03-28 | 1989-03-28 | Device for the obstruction of ventilation installations |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0396785A1 true EP0396785A1 (en) | 1990-11-14 |
EP0396785B1 EP0396785B1 (en) | 1996-06-12 |
Family
ID=8201143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89105492A Expired - Lifetime EP0396785B1 (en) | 1989-03-28 | 1989-03-28 | Device for the obstruction of ventilation installations |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0396785B1 (en) |
AT (1) | ATE139134T1 (en) |
DE (1) | DE58909690D1 (en) |
ES (1) | ES2087856T3 (en) |
GR (1) | GR3020308T3 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10134839A1 (en) * | 2001-07-17 | 2003-02-06 | Guenter Schulte | Smoke/flame resistant seal, for a passage opening through a wall or ceiling, has a ventilation brick in the opening which foams at high temperatures together with a movable barrier flap |
EP1411287A1 (en) * | 2002-10-19 | 2004-04-21 | Selkirkflue Limited | Fire resistant passageway apparatus for a conduit |
EP1684026A1 (en) * | 2005-01-21 | 2006-07-26 | Martin Reuter | Automatic closing device for openings |
DE102008059747A1 (en) * | 2008-12-01 | 2010-06-10 | Engels Ingenieure Gmbh | Fire protection device for inner side of high-rise building facades, has fire protection blind with lamellas that are made of steel sheet with intumescent coating, and vertical pendulum locking device provided for fire protection blind |
EP2366435A1 (en) * | 2010-03-15 | 2011-09-21 | Grempco S.A. | Fire damper |
DE202015102976U1 (en) | 2015-06-09 | 2015-10-19 | Robert Wichelmann | Fire protection device for high-rise buildings |
WO2017021592A1 (en) * | 2015-08-05 | 2017-02-09 | BAUMERT (Société par Actions Simplifiée Unipersonnelle) | Firestop valve device and assembly made up of at least two such devices mounted in series |
CN112369810A (en) * | 2020-11-10 | 2021-02-19 | 湖南瑞奇电器有限公司 | Blowing and heating device for electric heating table |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10104923C1 (en) * | 2001-01-25 | 2002-10-02 | Lta Lufttechnische Komponenten | Fireproof flap for ventilation systems such as ventilation ducts in buildings, has flap leaf which consists of perforated plate on both sides and filled with insulating material |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2153480A1 (en) * | 1971-09-25 | 1973-05-04 | Trox Gmbh Geb | Fire break valves for ducts - combining use of pivoted gates and intumescent foams to seal the duct |
DE2342531A1 (en) * | 1973-08-23 | 1975-02-27 | Hans Guenter Schmidt | Ventilator and air-conditioner shutoff and damper - with flaps forming jet-shaped flow area which can be effectively closed |
DE2431065A1 (en) * | 1974-06-28 | 1976-01-15 | Maico Elektroapparate | Cover system for extractor fan or apertures - has pivoted lamellae with stepped static splints acting as closure stops |
GB2151013A (en) * | 1983-12-07 | 1985-07-10 | Haslam George Gilbert | Dampers for ventilation ducts |
GB2203646A (en) * | 1987-04-23 | 1988-10-26 | Actionair Equip | Combination thermal actuator and fusible link, especially for fire and/or smoke dampers |
-
1989
- 1989-03-28 AT AT89105492T patent/ATE139134T1/en not_active IP Right Cessation
- 1989-03-28 DE DE58909690T patent/DE58909690D1/en not_active Expired - Fee Related
- 1989-03-28 EP EP89105492A patent/EP0396785B1/en not_active Expired - Lifetime
- 1989-03-28 ES ES89105492T patent/ES2087856T3/en not_active Expired - Lifetime
-
1996
- 1996-06-20 GR GR960401678T patent/GR3020308T3/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2153480A1 (en) * | 1971-09-25 | 1973-05-04 | Trox Gmbh Geb | Fire break valves for ducts - combining use of pivoted gates and intumescent foams to seal the duct |
DE2342531A1 (en) * | 1973-08-23 | 1975-02-27 | Hans Guenter Schmidt | Ventilator and air-conditioner shutoff and damper - with flaps forming jet-shaped flow area which can be effectively closed |
DE2431065A1 (en) * | 1974-06-28 | 1976-01-15 | Maico Elektroapparate | Cover system for extractor fan or apertures - has pivoted lamellae with stepped static splints acting as closure stops |
GB2151013A (en) * | 1983-12-07 | 1985-07-10 | Haslam George Gilbert | Dampers for ventilation ducts |
GB2203646A (en) * | 1987-04-23 | 1988-10-26 | Actionair Equip | Combination thermal actuator and fusible link, especially for fire and/or smoke dampers |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10134839A1 (en) * | 2001-07-17 | 2003-02-06 | Guenter Schulte | Smoke/flame resistant seal, for a passage opening through a wall or ceiling, has a ventilation brick in the opening which foams at high temperatures together with a movable barrier flap |
DE10134839B4 (en) * | 2001-07-17 | 2004-08-26 | Schulte, Günter | Device for smokeproof and fire-resistant closing of a wall or ceiling opening |
EP1411287A1 (en) * | 2002-10-19 | 2004-04-21 | Selkirkflue Limited | Fire resistant passageway apparatus for a conduit |
EP1684026A1 (en) * | 2005-01-21 | 2006-07-26 | Martin Reuter | Automatic closing device for openings |
DE102008059747A1 (en) * | 2008-12-01 | 2010-06-10 | Engels Ingenieure Gmbh | Fire protection device for inner side of high-rise building facades, has fire protection blind with lamellas that are made of steel sheet with intumescent coating, and vertical pendulum locking device provided for fire protection blind |
DE102008059747B4 (en) * | 2008-12-01 | 2012-01-12 | Engels Ingenieure Gmbh | Fire protection device for high-rise buildings |
EP2366435A1 (en) * | 2010-03-15 | 2011-09-21 | Grempco S.A. | Fire damper |
DE202015102976U1 (en) | 2015-06-09 | 2015-10-19 | Robert Wichelmann | Fire protection device for high-rise buildings |
WO2017021592A1 (en) * | 2015-08-05 | 2017-02-09 | BAUMERT (Société par Actions Simplifiée Unipersonnelle) | Firestop valve device and assembly made up of at least two such devices mounted in series |
CN112369810A (en) * | 2020-11-10 | 2021-02-19 | 湖南瑞奇电器有限公司 | Blowing and heating device for electric heating table |
Also Published As
Publication number | Publication date |
---|---|
ES2087856T3 (en) | 1996-08-01 |
ATE139134T1 (en) | 1996-06-15 |
DE58909690D1 (en) | 1996-07-18 |
EP0396785B1 (en) | 1996-06-12 |
GR3020308T3 (en) | 1996-09-30 |
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