EP0396785A1 - Device for the obstruction of ventilation installations - Google Patents

Device for the obstruction of ventilation installations Download PDF

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Publication number
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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EP
European Patent Office
Prior art keywords
ventilation
slats
frame
cross
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89105492A
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German (de)
French (fr)
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EP0396785B1 (en
Inventor
Gottfried Dipl.-Ing. Kraft
Franz Dipl.-Ing. Kraft
Peter Dr. Kuhn
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Rolf Kuhn GmbH
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Rolf Kuhn GmbH
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Publication date
Application filed by Rolf Kuhn GmbH filed Critical Rolf Kuhn GmbH
Priority to EP89105492A priority Critical patent/EP0396785B1/en
Priority to DE58909690T priority patent/DE58909690D1/en
Priority to AT89105492T priority patent/ATE139134T1/en
Priority to ES89105492T priority patent/ES2087856T3/en
Publication of EP0396785A1 publication Critical patent/EP0396785A1/en
Application granted granted Critical
Publication of EP0396785B1 publication Critical patent/EP0396785B1/en
Priority to GR960401678T priority patent/GR3020308T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.

Landscapes

  • 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

The device for the obstruction of ventilation installations consists of a U-shaped frame 3, in which there are arranged, in the direction of flow and at a distance from one another, lamellae 4, 6, 7, 8, 9, 10 made of a material which in the event of fire foams and hermetically seals the cross-section. Of these lamellae, every second lamella is mounted pivotably about its vertical centre axis so that the intermediate space between two firmly installed lamellae can be sealed. At temperatures up to approximately 65 DEG C, the obstruction device does not respond for at least an hour, whereas at a trigger temperature of approximately 70 DEG C, by means of a control device, a pivoting movement of the rotatably mounted lamellae begins, and at at least 100 DEG C the sealing material foams. In the range up to 100 DEG C, the obstruction device therefore operates reversibly. <IMAGE>

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.
Further features, details and advantages of the invention result from the following description of a preferred exemplary embodiment with reference to the drawing. In it show:
  • 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 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.

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 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.

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 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.

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 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.

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)

1. Vorrichtung zum Absperren von Lüftungseinrichtungen wie Lüftungsleitungen, Lüftungsdurchlässen, Lüftungsab­schlüssen und/oder dgl. 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, dadurch gekennzeichnet, daß wenigstens einige (6,7,8) der Lamellen (4) verstellbar sind, derart, daß der Querschnitt der Lüftungseinrichtung (2) bei einer Temperatur unterhalb der Reaktionstemperatur (100° C) des abdichtenden Materials wiederholt gasdicht ver­schließbar ist.1.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 which extends through the cross section of the flow device and is arranged at a distance from one another Fire-foaming and hermetically sealing the cross section, characterized in that at least some (6, 7, 8) of the slats (4) are adjustable in such a way that the cross section of the ventilation device (2) is at a temperature below the reaction temperature (100 ° C ) of the sealing material can be repeatedly closed gas-tight. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede verstellbare Lamelle (6,7,8) um eine Achse drehbar gelagert ist, die jeweils in einer Ebene ange­ordnet ist, welche sich senkrecht zu der Längsachse (5) der Lüftungseinrichtung (2) erstreckt.2. Device according to claim 1, characterized in that each adjustable lamella (6,7,8) is rotatably mounted about an axis, which is arranged in each case in a plane which is perpendicular to the longitudinal axis (5) of the ventilation device (2) extends. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß die Lamellen (4) in einem die Lüftungs­einrichtung durchgreifenden Rahmen (3) angeordnet sind.3. Apparatus according to claim 1 or 2, characterized in that the lamellae (4) are arranged in a frame which extends through the ventilation device (3). 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Rahmen (3) aus einem Material mit geringer Wär­meleitfähigkeit besteht.4. The device according to claim 3, characterized in that the frame (3) consists of a material with low thermal conductivity. 5. Vorrichtung nach Anspruch 2 oder 3, dadurch gekenn­zeichnet, daß der Rahmen (3) im Querschnitt u-förmig ausgebildet ist.5. Apparatus according to claim 2 or 3, characterized in that the frame (3) is U-shaped in cross section. 6. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche 3 bis 5, dadurch gekennzeichnet, daß der Rah­men wenigstens an seinen senkrechten Rahmeninnenseiten im Brandfall aufschäumende Streifen (11,12) aufweist.6. The device according to at least one of the preceding claims 3 to 5, characterized in that the frame has foaming strips (11, 12) at least on its vertical inner sides of the frame in the event of a fire. 7. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in dem Rahmen (3) jede zweite Lamelle (6,7,8) dreh- oder schwenkbar ist und gegen eine benachbarte, festinstallierte La­melle (9,10) anstellbar ist.7. The device according to at least one of the preceding claims, characterized in that in the frame (3) every second lamella (6,7,8) can be rotated or pivoted and can be adjusted against an adjacent, permanently installed lamella (9, 10). 8. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die dreh- oder schwenkbaren Lamellen (6,7,8) über ein Hebelsystem (14,15) derart einstellbar sind, daß sie den Zwischen­raum zwischen zwei festinstallierten Lamellen (9,10) verschließen.8. The device according to at least one of the preceding claims, characterized in that the rotatable or pivotable slats (6,7,8) via a lever system (14,15) are adjustable such that they the space between two fixed slats (9, 10) close. 9. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die dreh-oder schwenkbaren Lamellen (6,7,8) um 90° verstellbar sind und daß sie in ihrer Länge dem Abstand zwischen zwei festinstallierten Lamellen (9,10) ent­sprechen.9. The device according to claim 9, characterized in that the rotatable or pivotable slats (6,7,8) are adjustable by 90 ° and that their length corresponds to the distance between two fixed slats (9,10). 10. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß das Hebelsystem mit einer auf Wärme und/ oder Rauch ansprechenden Steuereinrichtung (16) verbunden ist.10. The device according to claim 8, characterized in that the lever system is connected to a heat and / or smoke responsive control device (16). 11. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Auslösetem­peratur für die Betätigung des Hebelsystems (14,15) bei ca 70° C liegt.11. The device according to at least one of the preceding claims, characterized in that the triggering temperature for the actuation of the lever system (14, 15) is approximately 70 ° C. 12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Steuereinrichtung von einem gegen den Druck ei­ner Rückstellfeder (18) wirkenden Thermoelement (16) gebildet ist.12. The apparatus according to claim 10, characterized in that the control device is formed by a thermocouple (16) acting against the pressure of a return spring (18). 13. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Steuereinrichtung von einem legierten Memory-­Metall gebildet ist, welches die verschwenkten Lamellen (6,7,8) bei Abkühlung unter die Auslösetemperatur wie­der in ihre Ausgangslage zurückstellt.13. The apparatus according to claim 10, characterized in that the control device is formed from an alloyed memory metal, which resets the pivoted fins (6, 7, 8) when they cool below the trigger temperature back to their starting position. 14. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Steuereinrichtung von einer mit einem Rauchmel­der gekoppelten Einrichtung gebildet ist.14. The apparatus according to claim 10, characterized in that the control device is formed by a device coupled to a smoke detector. 15. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die dreh- oder schwenkbaren Lamellen (6,7,8) auf je einen beidendig angeordneten Drehteller (13) aufgeklemmt sind.15. The device according to at least one of the preceding claims, characterized in that the rotatable or pivotable slats (6,7,8) are clamped onto a respective rotating plate (13) arranged at both ends. 16. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schwenkme­chanik (14,15) oben und unten im Rahmenprofil angeord­net ist.16. The device according to at least one of the preceding claims, characterized in that the pivot mechanism (14, 15) is arranged above and below in the frame profile. 17. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die verstellba­ren und/oder die festinstallierten Lamellen mit zusätz­lich Dichtungen versehen sind, um im Reversibilitätsbe­ reich der Absperrvorrichtung einen gasdichten Verschluß des Lüftungsquerschnittes zu erzielen.17. The device according to at least one of the preceding claims, characterized in that the adjustable and / or the fixed slats are provided with additional seals to in the reversibility range of the shut-off device to achieve a gas-tight seal of the ventilation cross-section. 18. Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, daß die Dichtungen wenigstens an den schmalen Stirnsei­ten der verstellbaren Lamellen angeordnet sind.18. The apparatus according to claim 17, characterized in that the seals are arranged at least on the narrow end faces of the adjustable slats. 19. Vorrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Lamellen eine insbesondere metallische Stützstruktur aufweisen, die mit dem im Brandfall aufschäumenden Material beschichtet ist.19. The device according to at least one of the preceding claims, characterized in that the lamellae have a particularly metallic support structure which is coated with the foaming material in the event of fire.
EP89105492A 1989-03-28 1989-03-28 Device for the obstruction of ventilation installations Expired - Lifetime EP0396785B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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