EP1208875B1 - Fire extinguishing device for laboratory arrangements in particular for laboratory fume hoods - Google Patents

Fire extinguishing device for laboratory arrangements in particular for laboratory fume hoods Download PDF

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Publication number
EP1208875B1
EP1208875B1 EP01125829A EP01125829A EP1208875B1 EP 1208875 B1 EP1208875 B1 EP 1208875B1 EP 01125829 A EP01125829 A EP 01125829A EP 01125829 A EP01125829 A EP 01125829A EP 1208875 B1 EP1208875 B1 EP 1208875B1
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EP
European Patent Office
Prior art keywords
fire extinguishing
extinguishing device
fire
laboratory
extinguishing
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EP01125829A
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German (de)
French (fr)
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EP1208875A2 (en
EP1208875A3 (en
Inventor
Bernd Hemling
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laborbau Systeme Hemling GmbH
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Laborbau Systeme GmbH
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Publication of EP1208875A3 publication Critical patent/EP1208875A3/en
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C13/00Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/76Details or accessories
    • A62C13/78Suspending or supporting devices
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places

Definitions

  • the invention relates to a fire extinguishing device for fume hoods.
  • Fire fighting equipment of the type discussed here are already known.
  • the fire extinguishing device serves to extinguish a fire in the corresponding laboratory device or in its working space by means of an electronic and / or mechanical and optionally manually operable fire extinguishing triggering system.
  • the fire extinguishing device according to the invention is characterized in that it is mobile and flexibly operatively connected to a respective laboratory device.
  • a "ready-to-connect" operational coupling of the fire-extinguishing device with a laboratory device is understood. Due to the mobility of the fire-extinguishing device, it is possible to temporarily connect it as needed with a respective laboratory device of a laboratory. This provides increased versatility of the fire extinguisher in a laboratory. It can thus be provided for example for several laboratory facilities one or more mobile fire extinguishing equipment, which are only operatively connected to an associated laboratory equipment when needed.
  • the laboratory equipment can be of a similar or different design.
  • the mobile fire-extinguishing device is characterized by its ease of maintenance, whereby a maintenance-independent operation of laboratory equipment is ensured by means of a Optimizeriesch Rhein. It is thus it is possible to ensure safe operation of the same with a reduced number of fire extinguishing equipment for a laboratory having a plurality of laboratory equipment, since not every laboratory equipment has to be equipped with a specific fire extinguisher but can only temporarily be operatively connected with a mobile fire extinguisher if necessary.
  • a support arm is provided, which is at least partially positionable in the working space of a fume hood.
  • the protruding into the working space of the fume hood part of the support arm is equipped with various functional elements (extinguishing nozzles, flame detector, fusing unit), so that a reliable operative connection between the fire extinguisher and fume hood is guaranteed.
  • the fire-extinguishing device is designed as a mobile fire-fighting vehicle, which has a support frame movable on rollers.
  • a fire truck can be produced in a relatively simple and cost-effective manner and is particularly suitable for use in a laboratory having a plurality of laboratory facilities.
  • the support frame can be designed to be adjustable for producing an operative connection with geometrically differently designed laboratory devices, so that a geometry-adapted and reliable operative connection of the fire-extinguishing rod with a corresponding laboratory device becomes possible.
  • the fire extinguishing device has an extinguishing system, a monitoring system and a warning system, wherein the extinguishing system is automatically triggered by means of the monitoring system.
  • the subdivision of the fire extinguisher into a plurality of operationally interconnected functional systems permits the time-limited production of a handleable and reliable operative connection between a mobile fire extinguisher and a stationary laboratory facility.
  • the different functional systems can be kept adjustable in position by means of mutually independent support systems of the support frame, so that an adapted to the respective laboratory equipment operating arrangement of the functional systems is possible.
  • the extinguishing system the at least one extinguishing nozzle, which is operatively connected to an extinguishing agent container and attached to the protruding from the support frame of the Feuerlöschwagens support arm.
  • the support arm is preferably positionally adjustable connected to the support frame.
  • the monitoring system includes an opto-electronic flame detector and a mechanical fusible link release unit, which are attached to the protruding from the support frame of the Feuerlöschwagens support arm.
  • the warning system advantageously has an optical and / or an acoustic alarm element, which can each be activated by means of the monitoring system.
  • an additional warning system can be made perceptible to the operational readiness of the fire extinguisher and / or on the risk of a cracked in the working space of the corresponding laboratory equipment or deleted fire for the operating staff of the laboratory.
  • the alarm elements are preferably arranged as far as possible from the laboratory device on the support frame of the fire extinguishing device.
  • the fire-extinguishing device has a rechargeable electric battery which serves for the electrical operation and possibly emergency supply of the extinguishing system, monitoring system and warning system.
  • a rechargeable electric battery which serves for the electrical operation and possibly emergency supply of the extinguishing system, monitoring system and warning system.
  • the fire-extinguishing device contains an electrical plug-in unit operatively connected to the battery.
  • an electrical plug-in unit operatively connected to the battery.
  • the fire-extinguishing device is provided with a manually actuable emergency button for alternative triggering of the extinguishing system.
  • a manually actuable emergency button for alternative triggering of the extinguishing system.
  • the hand-operated emergency button is preferably distanced as far as possible from the corresponding laboratory equipment arranged on the support frame of the fire extinguishing device.
  • the single figure shows a schematic side view of a partially longitudinally cut fume hood, which is operatively connected to a fire extinguisher.
  • the figure shows a schematic side view of a generally designated 10 fume hood with which a generally designated 11 mobile fire extinguishing device is temporarily operatively connected.
  • the fume hood 10 contains a standing on the floor 14 of a laboratory frame 13, on which a shield 12 is arranged to form a working space 18.
  • a worktop 20 is arranged, which is accessible from the outside through a closable opening 37.
  • the opening 37 of the shield 12 can be closed by means of a sliding according to double arrow 17 sash 16.
  • the shield 12 is provided in the working space 18 with a take-off unit 15, which is in operative connection with an exhaust duct 21 through which exhaust air according to arrow 22 from the working space 18 are passed to the outside.
  • the further structural design of the fume hood 10 is known per se and will therefore not be further described in detail.
  • the mobile fire-extinguishing device 11 which is operatively connected to the fume hood 10, has a support frame 23 which is positionally displaceable by means of a plurality of wheels or rollers 24 on the floor 14 of the laboratory.
  • a support arm 25 is fixed, which is for example angular and projects in the operating position from the support frame 23 through the opening 37 in the working space 18 of the fume hood 10.
  • an optoelectronic flame detector 28 and a fusible link release unit 29 are arranged at the projecting into the working space 18 of the support arm 25.
  • the extinguishing nozzles 26 are each operatively connected by means of an extinguishing agent supply line, not shown, with an extinguishing agent container 27 arranged in the support frame 23, with the interposition of a shut-off valve 32.
  • the optoelectronic flame detector 28 is in operative connection with the shut-off valve 32 by means of a signal transmission line (not shown).
  • the Schmelzlotauslbaumtechnik 29 is connected by means of a connecting cable 30 with a weight 31, which can perform a vertical movement in the direction of floor 14 by utilizing its weight in the support frame 23, by means of which the opening of the shut-off valve 32 and thus triggering the deletion process in the working chamber 18 mechanically triggered can be.
  • an electro-mechanical emergency button 33 which can be manually operated by an operator at any time, with the shut-off valve 32 actively connected.
  • the fire-extinguishing device 11 is additionally provided with an optical and / or acoustic warning element 34 which is also operatively connected to the shut-off valve 32 and / or to another suitable functional unit (extinguishing nozzles 26) of the fire-extinguishing device 11.
  • the optical warning element 34 may be formed, for example, as a flashlamp and the acoustic warning element 34, for example, as a siren.
  • An electric battery 35 which is equipped to charge it with an electrical plug unit 36, serves to supply energy to be operated by electrical energy functional elements, such as the optoelectronic flame detector 28 or the warning element 34.
  • the plug unit 36 is connected to a power outlet 38 of the laboratory connectable to charge the battery 35.
  • the battery 35 is designed as a backup battery.
  • the fire-extinguishing device 11 finally has a fixed to the support arm 25 perforated plate 19, which can be flush with the sash 16 in abutting contact and thus allows a more or less complete, possibly hermetically sealed closure of the working space 18.
  • the fire extinguisher 11 In order to produce an operative connection of the fire extinguisher 11 designed for example as a fire extinguisher with the fume hood 10, the fire extinguisher 11 is moved in front of the fume hood 10 to be protected, so that the support arm 25 with the optoelectronic flame detector 28, the mechanical fusible release unit 29 and the extinguishing nozzles 26 into the working space 18 of fume hood 10 protrudes through the opening 37.
  • the sash 16 can then be closed manually, for example, and an existing residual opening can be covered with the perforated plate 19.
  • the fire-extinguishing device 11 is supplied with electrical energy from the network (socket 38) by means of the electric plug unit 36, which is preferably designed for 230 volts.
  • the battery (buffer battery 35) is charged by means of the plug unit 36 with electrical energy.
  • the optoelectronic flame detector 28 triggers the opening of the shut-off valve 32, so that the extinguishing agent is sprayed, for example in the form of an extinguishing gas by means of the extinguishing nozzles 26 in the working space 18 of the fume hood 10 and extinguishes the fire there erupted ,
  • the visual and audible alarm of the broken out in the working space 18 Brands carried out by means of the likewise electrically triggered warning element 34, which may be for example a flashlamp and / or a siren.
  • the fire fighting after reaching a certain operating temperature in the working space 18 of the fume hood 10, be triggered by means of the mechanical Schmelzlotauslettes 29.
  • the weight 31 is energized with a corresponding transformation of a located in the working space 18 hot melt solderless to carry out a directed perpendicular to the floor 14 of the laboratory movement, whereby the shut-off valve 32 of the extinguishing agent container 27 is mechanically opened by means of the connecting cable 30. Then it arrives Extinguishing agent (extinguishing gas) through the extinguishing nozzles 26 in the working space 18 of the fume hood 10 and causes the extinguishing of the broken in the working space 18 fire.
  • Extinguishing agent extinguishing gas
  • electro-mechanical emergency button 33 manually trigger the opening of the check valve 32 and thus the initiation of fire fighting in the working space 18.
  • the deletion process After detecting an open flame through the optoelectronic flame detector 28 selbiger triggers the deletion process electrically. When the electrical energy is not connected, the fusible release device 29 mechanically triggers the deletion process. Optionally, the deletion process can also be triggered mechanically or electrically manually by means of the electro-mechanical emergency button. After opening the shut-off valve 32 flows through the extinguishing nozzles 26, an extinguishing agent (extinguishing gas) in the working space 18. Simultaneously with the deletion process in the working space 18 begins a visual and audible alarm by means of the warning element 34th
  • the electronic monitoring system (optoelectronic flame detector 28) and the mechanical monitoring system (fusible link release unit 29) are independently operable.
  • the support arm 25 and the support frame 23 are preferably made of a refractory material, such as steel.
  • the fire-extinguishing device 11 is not designed as a fire-extinguishing trolley, but rather as a fire-extinguishing unit movably connected to the ceiling of the laboratory, for example.
  • a central control unit (not shown) may be provided for operating the fire extinguisher.

Abstract

The extinguisher (11) is a mobile system for flexible connection with laboratory equipment (10).

Description

Die Erfindung betrifft eine Feuerlöscheinrichtung für Laborabzüge.The invention relates to a fire extinguishing device for fume hoods.

Feuerlöscheinrichtungen der hier angesprochenen Art sind bereits bekannt. Um eine Laboreinrichtung in zuverlässiger Weise vor einer unkontrollierten Ausbreitung eines Feuers in einem Arbeitsraum zu schützen, weist selbige eine ihr permanent zugeordnete und integrierte Feuerlöscheinrichtung auf. Die Feuerlöscheinrichtung dient dazu, mittels eines elektronischen und/oder mechanischen sowie gegebenenfalls manuell betätigbaren Feuerlöschauslösesystems einen Brand in der entsprechenden Laboreinrichtung beziehungsweise in deren Arbeitsraum zu löschen.Fire fighting equipment of the type discussed here are already known. In order to reliably protect a laboratory device from an uncontrolled spread of a fire in a work space, the same has a permanently assigned and integrated fire extinguishing device. The fire extinguishing device serves to extinguish a fire in the corresponding laboratory device or in its working space by means of an electronic and / or mechanical and optionally manually operable fire extinguishing triggering system.

Nachteilhafterweise ist das Ausrüsten von Laboreinrichtungen und insbesondere von Laborabzügen mit einer zugehörigen Feuerlöscheinrichtung konstruktiv verhältnismäßig aufwendig und konstenintensiv.Disadvantageously, the equipping of laboratory equipment and in particular of fume hoods with an associated fire extinguisher is structurally relatively complex and intensive.

Aus der DE 27 32 886 Al ist ein kompaktes Löschfahrzeug bekannt, das einen Aufbau mit einer verlagerbaren Spritzeinrichtung aufweist, die durch übliche Türöffnungen passt und damit in einem Gebäude bis zu einem Brandherd fahren kann. Die US 1 889 483, gegemäfer welcher Anspruch 1 abgegrenzt ist, betrifft ein mobiles Löschgerät für einen Brand in einem Kamin oder einer ähnlichen Einrichtung, das einen tragbaren Löschmittelbehälter mit einer mit Zerstäuber versehenen Rohrleitung aufweist.From DE 27 32 886 Al a compact fire truck is known which has a structure with a displaceable spraying device which fits through conventional door openings and thus can drive in a building to a source of fire. US 1 889 483, according to which claim 1 is delimited, relates to a mobile extinguishing device for a Fire in a chimney or similar device that has a portable extinguishant container with a nebulized tubing.

Es ist Aufgabe der Erfindung, eine Feuerlöscheinrichtung der eingangs genannten Art anzugeben, welche eine hohe Betriebs sicherheit ermöglicht.It is an object of the invention to provide a fire extinguishing device of the type mentioned, which allows high safety operation.

Zur Lösung dieser Aufgabe wird eine Feuerlöscheinrichtung mit den Merkmalen des Anspruchs 1 vorgeschlagen. Die erfindungsgemäße Feuerlöscheinrichtung ist dadurch gekennzeichnet, dass sie mobil ausgebildet und flexibel mit einer jeweiligen Laboreinrichtung wirkverbindbar ist. Hierbei wird unter "wirkverbindbar" eine einsatzbereite Betriebskopplung der Feuerlöscheinrichtung mit einer Laboreinrichtung verstanden. Aufgrund der Mobilität der Feuerlöscheinrichtung ist es möglich, selbige nach Bedarf mit einer jeweiligen Laboreinrichtung eines Labors zeitweise wirkzuverbinden. Dadurch wird eine erhöhte Einsatzflexibilität der Feuerlöscheinrichtung in einem Labor erhalten. Es können somit zum Beispiel für mehrere Laboreinrichtungen eine oder mehrere mobile Feuerlöscheinrichtungen vorgesehen werden, welche lediglich im Bedarfsfall mit einer zugehörigen Laboreinrichtung operativ verbunden werden. Dabei können je nach Bedarf die Laboreinrichtungen gleichartig oder auch verschiedenartig ausgebildet sein. Ferner zeichnet sich die mobile Feuerlöscheinrichtung durch ihre Wartungsfreundlichkeit aus, wobei mittels einer Ersatzfeuerlöscheinrichtung ein wartungsunabhängiges Betreiben von Laboreinrichtungen gewährleistet wird. Es ist somit möglich, bei reduzierter Anzahl von Feuerlöscheinrichtungen für ein eine Mehrzahl von Laboreinrichtungen aufweisendes Labor ein sicheres Betreiben derselben zu gewährleisten, da nicht jede Laboreinrichtung mit einer spezifischen Feuerlöscheinrichtung ausgerüstet sein muss, sondern lediglich im Bedarfsfall mit einer mobilen Feuerlöscheinrichtung zeitweise wirkverbunden werden kann. Ferner ist ein Tragarm vorgesehen, der wenigstens teilweise in dem Arbeitsraum eines Laborabzugs positionierbar ist. Dabei ist der in den Arbeitsraum des Laborabzugs ragende Teil des Tragarms mit verschiedenen Funktionselementen (Löschdüsen, Flammendetektor, Schmelzloteinheit) ausgerüstet, so dass eine betriebssichere Wirkverbindung zwischen Feuerlöscheinrichtung und Laborabzug gewährleistet ist.To solve this problem, a fire extinguishing device with the features of claim 1 is proposed. The fire extinguishing device according to the invention is characterized in that it is mobile and flexibly operatively connected to a respective laboratory device. In this case, a "ready-to-connect" operational coupling of the fire-extinguishing device with a laboratory device is understood. Due to the mobility of the fire-extinguishing device, it is possible to temporarily connect it as needed with a respective laboratory device of a laboratory. This provides increased versatility of the fire extinguisher in a laboratory. It can thus be provided for example for several laboratory facilities one or more mobile fire extinguishing equipment, which are only operatively connected to an associated laboratory equipment when needed. Depending on the requirements, the laboratory equipment can be of a similar or different design. Furthermore, the mobile fire-extinguishing device is characterized by its ease of maintenance, whereby a maintenance-independent operation of laboratory equipment is ensured by means of a Ersatzfeuerlöscheinrichtung. It is thus it is possible to ensure safe operation of the same with a reduced number of fire extinguishing equipment for a laboratory having a plurality of laboratory equipment, since not every laboratory equipment has to be equipped with a specific fire extinguisher but can only temporarily be operatively connected with a mobile fire extinguisher if necessary. Further, a support arm is provided, which is at least partially positionable in the working space of a fume hood. The protruding into the working space of the fume hood part of the support arm is equipped with various functional elements (extinguishing nozzles, flame detector, fusing unit), so that a reliable operative connection between the fire extinguisher and fume hood is guaranteed.

Mit Vorteil ist die Feuerlöscheinrichtung als fahrbarer Feuerlöschwagen ausgebildet, der ein auf Rollen bewegbares Traggestell aufweist. Ein derartiger Feuerlöschwagen ist in verhältnismäßig einfacher und kostengünstiger Weise herstellbar und eignet sich besonders zum Einsatz in einem eine Mehrzahl von Laboreinrichtungen aufweisenden Labor. Dabei kann das Traggestell zur Herstellung einer Wirkverbindung mit geometrisch unterschiedlich konzipierten Laboreinrichtungen verstellbar ausgebildet sein, so dass eine geometrieangepasste und betriebssichere Wirkverbindung des Feuerlöschwagens mit einer entsprechenden Laboreinrichtung möglich wird.Advantageously, the fire-extinguishing device is designed as a mobile fire-fighting vehicle, which has a support frame movable on rollers. Such a fire truck can be produced in a relatively simple and cost-effective manner and is particularly suitable for use in a laboratory having a plurality of laboratory facilities. In this case, the support frame can be designed to be adjustable for producing an operative connection with geometrically differently designed laboratory devices, so that a geometry-adapted and reliable operative connection of the fire-extinguishing rod with a corresponding laboratory device becomes possible.

Entsprechend einer bevorzugten Ausführungsform weist die Feuerlöscheinrichtung ein Löschsystem, ein Überwachungssystem und ein Warnsystem auf, wobei das Löschsystem mittels des Überwachungssystems automatisiert auslösbar ist. Die Unterteilung der Feuerlöscheinrichtung in mehrere, miteinander in operativer Verbindung stehende Funktionssysteme erlaubt die zeitbegrenzte Herstellung einer handhabungsfreundlichen und betriebssicheren Wirkverbindung zwischen einer mobilen Feuerlöscheinrichtung und einer ortsfesten Laboreinrichtung. Dabei können die unterschiedlichen Funktionssysteme mittels voneinander unabhängiger Tragsysteme des Traggestells lageverstellbar gehalten werden, so dass eine an die jeweilige Laboreinrichtung angepasste Betriebsanordnung der Funktionssysteme möglich ist.According to a preferred embodiment, the fire extinguishing device has an extinguishing system, a monitoring system and a warning system, wherein the extinguishing system is automatically triggered by means of the monitoring system. The subdivision of the fire extinguisher into a plurality of operationally interconnected functional systems permits the time-limited production of a handleable and reliable operative connection between a mobile fire extinguisher and a stationary laboratory facility. The different functional systems can be kept adjustable in position by means of mutually independent support systems of the support frame, so that an adapted to the respective laboratory equipment operating arrangement of the functional systems is possible.

Mit Vorteil weist das Löschsystem die wenigstens eine Löschdüse auf, wobei diese mit einem Löschmittelbehälter wirkverbunden und an dem vom Traggestell des Feuerlöschwagens abstehenden Tragarm befestigt ist. Dabei ist der Tragarm vorzugsweise lageverstellbar mit dem Traggestell verbunden.Advantageously, the extinguishing system, the at least one extinguishing nozzle, which is operatively connected to an extinguishing agent container and attached to the protruding from the support frame of the Feuerlöschwagens support arm. In this case, the support arm is preferably positionally adjustable connected to the support frame.

Vorteilhafterweise enthält das Überwachungssystem einen optoelektronischen Flammendetektor und eine mechanische Schmelzlotauslöseeinheit, die an dem vom Traggestell des Feuerlöschwagens abstehenden Tragarm befestigt sind. Mittels einer flexiblen Lageverstellbarkeit des Tragarms ist eine betriebsoptimale Anordnung von Überwachungs- und Auslöseelementen des Überwachungssystems in beziehungsweise an einer Laboreinrichtung möglich.Advantageously, the monitoring system includes an opto-electronic flame detector and a mechanical fusible link release unit, which are attached to the protruding from the support frame of the Feuerlöschwagens support arm. By means of a flexible positional adjustability of the support arm, an optimum arrangement of monitoring and triggering elements of the monitoring system in or on a laboratory device is possible.

Mit Vorteil weist das Warnsystem ein optisches und/oder ein akustisches Alarmierelement auf, die jeweils mittels des Überwachungssystems aktivierbar sind. Mit Hilfe eines zusätzlichen Warnsystems kann auf die Betriebsbereitschaft der Feuerlöscheinrichtung und/oder auf die Gefahr eines im Arbeitsraum der entsprechenden Laboreinrichtung ausgebrochenen beziehungsweise gelöschten Feuers für das Betriebspersonal des Labors wahrnehmbar hingewiesen werden. Dabei sind die Alarmierelemente vorzugsweise möglichst weit von der Laboreinrichtung distanziert am Traggestell der Feuerlöscheinrichtung angeordnet.The warning system advantageously has an optical and / or an acoustic alarm element, which can each be activated by means of the monitoring system. With the help of an additional warning system can be made perceptible to the operational readiness of the fire extinguisher and / or on the risk of a cracked in the working space of the corresponding laboratory equipment or deleted fire for the operating staff of the laboratory. In this case, the alarm elements are preferably arranged as far as possible from the laboratory device on the support frame of the fire extinguishing device.

Gemäß einer bevorzugten Ausführungsform weist die Feuerlöscheinrichtung eine aufladbare elektrische Batterie auf, die zur elektrischen Betriebs- und gegebenenfalls Notversorgung des Löschsystems, Überwachungssystems und Warnsystems dient. Mittels einer derartigen elektrischen Batterie wird ein zuverlässiger und ortsflexibler Einsatz der Feuerlöscheinrichtung in einem Labor ermöglicht.According to a preferred embodiment, the fire-extinguishing device has a rechargeable electric battery which serves for the electrical operation and possibly emergency supply of the extinguishing system, monitoring system and warning system. By means of such an electric battery, a reliable and location-flexible use of the fire-extinguishing device in a laboratory is made possible.

Vorteilhafterweise enthält die Feuerlöscheinrichtung eine mit der Batterie wirkverbundene elektrische Steckereinheit. Hierdurch wird ein periodisches Aufladen der elektrischen Batterie mit Netzenergie während und/oder außerhalb der Betriebszeiten der Feuerlöscheinrichtung ermöglicht.Advantageously, the fire-extinguishing device contains an electrical plug-in unit operatively connected to the battery. As a result, a periodic charging of the electric battery with mains power during and / or outside the operating hours of the fire extinguishing device is made possible.

Vorzugsweise ist die Feuerlöscheinrichtung mit einer handbetätigbaren Notfalltaste zur alternativen Auslösung des Löschsystems versehen. Eine derartige direkte Auslösemöglichkeit des Löschsystems mittels der manuell betätigbaren Notfalltaste erhöht die Betriebssicherheit der Feuerlöscheinrichtung. Dabei ist die handbetätigbare Notfalltaste vorzugsweise möglichst weit von der entsprechenden Laboreinrichtung distanziert am Traggestell der Feuerlöscheinrichtung angeordnet.Preferably, the fire-extinguishing device is provided with a manually actuable emergency button for alternative triggering of the extinguishing system. Such a direct triggering possibility of the extinguishing system by means of the manually actuated emergency button increases the reliability of the fire extinguishing device. The hand-operated emergency button is preferably distanced as far as possible from the corresponding laboratory equipment arranged on the support frame of the fire extinguishing device.

Weitere vorteilhafte Ausführungsformen der Feuerlöscheinrichtung ergeben sich aus der Beschreibung.Further advantageous embodiments of the fire extinguishing device will become apparent from the description.

Im Folgenden wird die Erfindung anhand der Zeichnung näher erläutert. Dabei zeigt die einzige Figur eine schematische Seitenansicht eines teilweise längsgeschnittenen Laborabzugs, der mit einer Feuerlöscheinrichtung wirkverbunden ist.In the following the invention will be explained in more detail with reference to the drawing. The single figure shows a schematic side view of a partially longitudinally cut fume hood, which is operatively connected to a fire extinguisher.

Die Figur zeigt in schematischer Seitenansicht einen allgemein mit 10 bezeichneten Laborabzug, mit welchem eine allgemein mit 11 bezeichnete mobile Feuerlöscheinrichtung zeitweise wirkverbunden ist.The figure shows a schematic side view of a generally designated 10 fume hood with which a generally designated 11 mobile fire extinguishing device is temporarily operatively connected.

Der Laborabzug 10 enthält ein auf dem Fußboden 14 eines Labors stehendes Gestell 13, auf welchem eine Abschirmung 12 unter Ausbildung eines Arbeitsraums 18 angeordnet ist. Im Arbeitsraum 18 ist eine Arbeitsplatte 20 angeordnet, welche von außen durch eine verschließbare Öffnung 37 zugänglich ist. Die Öffnung 37 der Abschirmung 12 ist mittels eines gemäß Doppelpfeil 17 verschiebbaren Frontschiebers 16 verschließbar. Die Abschirmung 12 ist im Arbeitsraum 18 mit einer Abzugseinheit 15 versehen, welche mit einem Abluftkanal 21 in Wirkverbindung steht, durch welchen Abluft gemäß Pfeil 22 aus dem Arbeitsraum 18 nach außen weitergeleitet werden. Der weitere konstruktive Aufbau des Laborabzugs 10 ist an sich bekannt und wird deshalb nicht im Detail weiter beschrieben.The fume hood 10 contains a standing on the floor 14 of a laboratory frame 13, on which a shield 12 is arranged to form a working space 18. In the working space 18, a worktop 20 is arranged, which is accessible from the outside through a closable opening 37. The opening 37 of the shield 12 can be closed by means of a sliding according to double arrow 17 sash 16. The shield 12 is provided in the working space 18 with a take-off unit 15, which is in operative connection with an exhaust duct 21 through which exhaust air according to arrow 22 from the working space 18 are passed to the outside. The further structural design of the fume hood 10 is known per se and will therefore not be further described in detail.

Die mit dem Laborabzug 10 wirkverbundene mobile Feuerlöscheinrichtung 11 weist ein Traggestell 23 auf, das mittels einer Mehrzahl an Rädern beziehungsweise Rollen 24 auf dem Fußboden 14 des Labors lageverschiebbar ist. An dem Traggestell 23 ist ein Tragarm 25 befestigt, der beispielsweise winkelförmig ausgebildet ist und in Betriebsstellung vom Traggestell 23 durch die Öffnung 37 in den Arbeitsraum 18 des Laborabzugs 10 ragt. Am in den Arbeitsraum 18 ragenden Teil des Tragarms 25 sind Löschdüsen 26, ein optoelektronischer Flammendetektor 28 und eine Schmelzlotauslöseeinheit 29 angeordnet. Die Löschdüsen 26 sind jeweils mittels einer nicht dargestellten Löschmittelzuführleitung mit einem im Traggestell 23 angeordneten Löschmittelbehälter 27 unter Zwischenschaltung eines Absperrventils 32 wirkverbunden. Der optoelektronische Flammendetektor 28 steht mittels einer nicht dargestellten Signalübertragungsleitung mit dem Absperrventil 32 in operativer Verbindung. Die Schmelzlotauslöseeinheit 29 ist mittels eines Verbindungsseils 30 mit einem Gewicht 31 verbunden, das unter Ausnutzung seiner Gewichtskraft im Traggestell 23 eine vertikale Bewegung in Richtung Fußboden 14 ausführen kann, mittels welcher die Öffnung des Absperrventils 32 und somit die Auslösung des Löschvorgangs im Arbeitsraum 18 mechanisch ausgelöst werden kann. Dagegen erfolgt die Auslösung eines Löschvorgangs im Arbeitsraum 18 mittels des optoelektronischen Flammendetektors 28 durch Übertragen eines elektrischen Signals an das Absperrventil 32. Darüber hinaus ist eine elektro-mechanische Notfalltaste 33, die zu jedem Zeitpunkt manuell mittels einer Bedienungsperson betätigt werden kann, mit dem Absperrventil 32 wirkverbunden. Die Feuerlöscheinrichtung 11 ist zusätzlich mit einem optischen und/oder akustischen Warnelement 34 versehen, das ebenfalls mit dem Absperrventil 32 und/oder mit einer weiteren, geeigneten Funktionseinheit (Löschdüsen 26) der Feuerlöscheinrichtung 11 operativ verbunden ist. Dabei kann das optische Warnelement 34 beispielsweise als Blitzlampe und das akustische Warnelement 34 beispielsweise als Sirene ausgebildet sein. Eine elektrische Batterie 35, die zu deren Aufladung mit einer elektrischen Steckereinheit 36 ausgestattet ist, dient zur Energieversorgung von mittels elektrischer Energie zu betreibenden Funktionselementen, wie zum Beispiel der optoelektronische Flammendetektor 28 oder das Warnelement 34. Die Steckereinheit 36 ist mit einer Netzsteckdose 38 des Labors zur Aufladung der Batterie 35 verbindbar. Dabei ist die Batterie 35 als Pufferbatterie ausgebildet. Die Feuerlöscheinrichtung 11 weist schließlich ein am Tragarm 25 befestigtes Lochblech 19 auf, das mit dem Frontschieber 16 bündig in Anlagekontakt gebracht werden kann und somit einen mehr oder weniger vollständigen, gegebenenfalls hermetisch dichten Verschluss des Arbeitsraums 18 erlaubt.The mobile fire-extinguishing device 11, which is operatively connected to the fume hood 10, has a support frame 23 which is positionally displaceable by means of a plurality of wheels or rollers 24 on the floor 14 of the laboratory. On the support frame 23, a support arm 25 is fixed, which is for example angular and projects in the operating position from the support frame 23 through the opening 37 in the working space 18 of the fume hood 10. At the projecting into the working space 18 of the support arm 25 extinguishing nozzles 26, an optoelectronic flame detector 28 and a fusible link release unit 29 are arranged. The extinguishing nozzles 26 are each operatively connected by means of an extinguishing agent supply line, not shown, with an extinguishing agent container 27 arranged in the support frame 23, with the interposition of a shut-off valve 32. The optoelectronic flame detector 28 is in operative connection with the shut-off valve 32 by means of a signal transmission line (not shown). The Schmelzlotauslöseeinheit 29 is connected by means of a connecting cable 30 with a weight 31, which can perform a vertical movement in the direction of floor 14 by utilizing its weight in the support frame 23, by means of which the opening of the shut-off valve 32 and thus triggering the deletion process in the working chamber 18 mechanically triggered can be. In contrast, the triggering of an extinguishing operation in the working space 18 by means of the optoelectronic flame detector 28 by transmitting an electrical signal to the shut-off valve 32. In addition, an electro-mechanical emergency button 33, which can be manually operated by an operator at any time, with the shut-off valve 32 actively connected. The fire-extinguishing device 11 is additionally provided with an optical and / or acoustic warning element 34 which is also operatively connected to the shut-off valve 32 and / or to another suitable functional unit (extinguishing nozzles 26) of the fire-extinguishing device 11. In this case, the optical warning element 34 may be formed, for example, as a flashlamp and the acoustic warning element 34, for example, as a siren. An electric battery 35, which is equipped to charge it with an electrical plug unit 36, serves to supply energy to be operated by electrical energy functional elements, such as the optoelectronic flame detector 28 or the warning element 34. The plug unit 36 is connected to a power outlet 38 of the laboratory connectable to charge the battery 35. In this case, the battery 35 is designed as a backup battery. The fire-extinguishing device 11 finally has a fixed to the support arm 25 perforated plate 19, which can be flush with the sash 16 in abutting contact and thus allows a more or less complete, possibly hermetically sealed closure of the working space 18.

Zur Herstellung einer Wirkverbindung der beispielsweise als Feuerlöschwagen ausgebildeten Feuerlöscheinrichtung 11 mit dem Laborabzug 10 wird die Feuerlöscheinrichtung 11 vor den zu schützenden Laborabzug 10 gefahren, so dass der Tragarm 25 mit dem optoelektronischen Flammendetektor 28, der mechanischen Schmelzlotauslöseeinheit 29 und den Löschdüsen 26 in den Arbeitsraum 18 des Laborabzugs 10 durch die Öffnung 37 ragt. Der Frontschieber 16 kann anschließend beispielsweise manuell geschlossen und eine noch vorhandene Restöffnung mit dem Lochblech 19 abgedeckt werden. Die Feuerlöscheinrichtung 11 wird mittels der elektrischen Steckereinheit 36, welche vorzugsweise für 230 Volt ausgelegt ist, mit elektrischer Energie aus dem Netz (Steckdose 38) versorgt. Gleichzeitig erfolgt eine Aufladung der Batterie (Pufferbatterie 35) mittels der Steckereinheit 36 mit elektrischer Energie. Nach Ausbrechen eines Feuers im Arbeitsraum 18 des Laborabzugs 10 löst der optoelektronische Flammendetektor 28 die Öffnung des Absperrventils 32 aus, so dass das Löschmittel beispielsweise in Form eines Löschgases mittels der Löschdüsen 26 in den Arbeitsraum 18 des Laborabzugs 10 gesprüht wird und das dort ausgebrochene Feuer löscht. Die optische und akustische Alarmierung des im Arbeitsraum 18 ausgebrochenen Brands erfolgt mittels des ebenfalls elektrisch ausgelösten Warnelements 34, das beispielsweise eine Blitzlampe und/oder eine Sirene sein kann.In order to produce an operative connection of the fire extinguisher 11 designed for example as a fire extinguisher with the fume hood 10, the fire extinguisher 11 is moved in front of the fume hood 10 to be protected, so that the support arm 25 with the optoelectronic flame detector 28, the mechanical fusible release unit 29 and the extinguishing nozzles 26 into the working space 18 of fume hood 10 protrudes through the opening 37. The sash 16 can then be closed manually, for example, and an existing residual opening can be covered with the perforated plate 19. The fire-extinguishing device 11 is supplied with electrical energy from the network (socket 38) by means of the electric plug unit 36, which is preferably designed for 230 volts. At the same time, the battery (buffer battery 35) is charged by means of the plug unit 36 with electrical energy. After breaking out of a fire in the working space 18 of the fume hood 10, the optoelectronic flame detector 28 triggers the opening of the shut-off valve 32, so that the extinguishing agent is sprayed, for example in the form of an extinguishing gas by means of the extinguishing nozzles 26 in the working space 18 of the fume hood 10 and extinguishes the fire there erupted , The visual and audible alarm of the broken out in the working space 18 Brands carried out by means of the likewise electrically triggered warning element 34, which may be for example a flashlamp and / or a siren.

Alternativ kann die Brandbekämpfung, nach Erreichen einer bestimmten Betriebstemperatur im Arbeitsraum 18 des Laborabzugs 10, mittels der mechanischen Schmelzlotauslöseeinheit 29 ausgelöst werden. Das Gewicht 31 wird bei entsprechender Umwandlung eines sich im Arbeitsraum 18 befindenden Schmelzlots stromlos zur Durchführung einer senkrecht in Richtung Fußboden 14 des Labors gerichteten Bewegung aktiviert, wodurch mittels des Verbindungsseils 30 das Absperrventil 32 des Löschmittelbehälters 27 mechanisch geöffnet wird. Daraufhin gelangt das Löschmittel (Löschgas) durch die Löschdüsen 26 in den Arbeitsraum 18 des Laborabzugs 10 und bewirkt das Löschen des im Arbeitsraum 18 ausgebrochenen Feuers.Alternatively, the fire fighting, after reaching a certain operating temperature in the working space 18 of the fume hood 10, be triggered by means of the mechanical Schmelzlotauslöseeinheit 29. The weight 31 is energized with a corresponding transformation of a located in the working space 18 hot melt solderless to carry out a directed perpendicular to the floor 14 of the laboratory movement, whereby the shut-off valve 32 of the extinguishing agent container 27 is mechanically opened by means of the connecting cable 30. Then it arrives Extinguishing agent (extinguishing gas) through the extinguishing nozzles 26 in the working space 18 of the fume hood 10 and causes the extinguishing of the broken in the working space 18 fire.

Ferner besteht die Möglichkeit, mittels der elektro-mechanischen Notfalltaste 33 manuell die Öffnung des Absperrventils 32 und somit die Einleitung einer Brandbekämpfung im Arbeitsraum 18 auszulösen.It is also possible by means of the electro-mechanical emergency button 33 manually trigger the opening of the check valve 32 and thus the initiation of fire fighting in the working space 18.

Es bestehen somit folgende Möglichkeiten zur Auslösung und Durchführung einer Brandbekämpfung im Arbeitsraum 18 mittels der Feuerlöscheinrichtung 11:Thus, there are the following possibilities for triggering and carrying out a fire fighting in the working space 18 by means of the fire-extinguishing device 11:

Nach Erkennen einer offenen Flamme durch den optoelektronischen Flammendetektor 28 löst selbiger den Löschvorgang elektrisch aus. Bei nicht angeschlossener elektrischer Energie löst die Schmelzlotauslöseeinheit 29 den Löschvorgang mechanisch aus. Gegebenenfalls kann der Löschvorgang auch manuell mittels der elektro-mechanischen Notfalltaste mechanisch oder elektrisch ausgelöst werden. Nach Öffnen des Absperrventils 32 strömt durch die Löschdüsen 26 ein Löschmittel (Löschgas) in den Arbeitsraum 18. Gleichzeitig mit dem Löschvorgang im Arbeitsraum 18 beginnt eine optische und akustische Alarmierung mittels des Warnelements 34.After detecting an open flame through the optoelectronic flame detector 28 selbiger triggers the deletion process electrically. When the electrical energy is not connected, the fusible release device 29 mechanically triggers the deletion process. Optionally, the deletion process can also be triggered mechanically or electrically manually by means of the electro-mechanical emergency button. After opening the shut-off valve 32 flows through the extinguishing nozzles 26, an extinguishing agent (extinguishing gas) in the working space 18. Simultaneously with the deletion process in the working space 18 begins a visual and audible alarm by means of the warning element 34th

Das elektronische Überwachungssystem (optoelektronischer Flammendetektor 28) und das mechanische Überwachungssystem (Schmelzlotauslöseeinheit 29) sind unabhängig voneinander betreibbar. Vorzugsweise ist die Feuerlöscheinrichtung 11 und insbesondere der Tragarm 25 lageverstellbar ausgebildet. Der Tragarm 25 und das Traggestell 23 sind vorzugsweise aus einem feuerfesten Material, wie zum Beispiel Stahl, hergestellt.The electronic monitoring system (optoelectronic flame detector 28) and the mechanical monitoring system (fusible link release unit 29) are independently operable. Preferably, the fire extinguishing device 11 and in particular the support arm 25 adjustable in position. The support arm 25 and the support frame 23 are preferably made of a refractory material, such as steel.

Entsprechend einer nicht dargestellten, alternativen Ausführungsform ist die Feuerlöscheinrichtung 11 nicht als Feuerlöschwagen, sondern als eine beispielsweise mit der Decke des Labors lageflexibel bewegbar verbundene Feuerlöscheinheit ausgebildet. Gegebenenfalls kann eine zentrale Steuereinheit (nicht dargestellt) zum Betreiben der Feuerlöscheinrichtung vorgesehen sein.According to an alternative embodiment, not shown, the fire-extinguishing device 11 is not designed as a fire-extinguishing trolley, but rather as a fire-extinguishing unit movably connected to the ceiling of the laboratory, for example. Optionally, a central control unit (not shown) may be provided for operating the fire extinguisher.

Claims (9)

  1. Fire extinguishing device (11) for laboratory arrangements designed as laboratory fume hoods (10) comprising working spaces (18), with the fire extinguishing device (11) being mobile in design and flexibly effectively connectable with a respective laboratory fume hood (10) such that one carrying arm (25) of the fire extinguishing device (11) is at least partially positionable in the working space (18) of the respective laboratory fume hood (10), with the part of the carrying arm (25) projecting into the working space (18) being provided with at least one extinguishing nozzle, characterized in that the part of the carrying arm projecting into the working space being furthermore provided with monitoring and releasing elements (26, 28, 29).
  2. Fire extinguishing device according to claim 1, characterized in that it is designed as a mobile fire extinguishing trolley (11) comprising a carrying rack (23) movable on rollers (24).
  3. Fire extinguishing device according to any one of the preceding claims, characterized in that the at least one extinguishing nozzle is part of an extinguishing system (26,27,32), that the monitoring and releasing elements are part of a monitoring system (28,29), and that the fire extinguishing device comprises a warning system (34), with the extinguishing system (26) being automatically releasable by means of the monitoring system (28).
  4. Fire extinguishing device according to claim 3, characterized in that the at least one extinguishing nozzle (26) of the extinguishing system (26,27,32) is effectively connected with an extinguisher container (27) and fastened on the carrying arm (25) projecting from the carrying rack (23) of the fire extinguishing trolley (11).
  5. Fire extinguishing device according to one of claims 3, 4, characterized in that the monitoring system (28,29) comprises an optoelectronic flame detector (28) and a mechanical melting solder releasing unit (29) which are fastened on the carrying arm (25) projecting from the carrying rack (23) of the fire extinguishing trolley (11).
  6. Fire extinguishing device according to one of claims 3 to 5, characterized in that the warning system (34) comprises an optical and/or an acoustic alarm element (34) which are respectively activatable by means of the monitoring system.
  7. Fire extinguishing device according to one of claims 3 to 6, characterized in that it comprises a chargeable electric battery (35) which serves for the electrical operating and, possibly, emergency supply of the extinguishing system (26,27,32), of the monitoring system (28,29) and of the warning system (34).
  8. Fire extinguishing device according to any one of the preceding claims, characterized in that it comprises an electrical plug unit (36) effectively connected with the battery (35).
  9. Fire extinguishing device according to one of claims 3 to 7, characterized in that it comprises a manually operable emergency button (33) for the alternative release of the extinguishing system (26,27,32).
EP01125829A 2000-11-22 2001-10-30 Fire extinguishing device for laboratory arrangements in particular for laboratory fume hoods Expired - Lifetime EP1208875B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20019808U DE20019808U1 (en) 2000-11-22 2000-11-22 Fire extinguishing device for laboratory equipment, in particular for fume cupboards
DE20019808U 2000-11-22

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EP1208875A2 EP1208875A2 (en) 2002-05-29
EP1208875A3 EP1208875A3 (en) 2002-06-26
EP1208875B1 true EP1208875B1 (en) 2006-08-02

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AT (1) ATE334728T1 (en)
DE (2) DE20019808U1 (en)
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CN106694077A (en) * 2017-02-23 2017-05-24 苏州欣祥本机械科技有限公司 Iron support with fire extinguishing function for chemical experiments
WO2019043574A1 (en) * 2017-08-30 2019-03-07 Donaphase (Pty) Limited A mobile fire protection system and method
RU2715255C1 (en) * 2019-05-21 2020-02-26 ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ "ВСЕРОССИЙСКИЙ ОРДЕНА "ЗНАК ПОЧЕТА" НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ ПРОТИВОПОЖАРНОЙ ОБОРОНЫ МИНИСТЕРСТВА РОССИЙСКОЙ ФЕДЕРАЦИИ ПО ДЕЛАМ ГРАЖДАНСКОЙ ОБОРОНЫ, ЧРЕЗВЫЧАЙНЫМ СИТУАЦИЯМ И ЛИКВИДАЦИИ ПОСЛЕДСТВИЙ СТИХИЙНЫХ БЕДСТВИЙ" (ФГБУ ВНИИПО МЧС России) Method for increasing pressure in internal fire water supply pipeline (versions) and device for its implementation (versions)

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Publication number Priority date Publication date Assignee Title
FR1456069A (en) * 1965-09-08 1966-05-20 Commerciale & Ind De Const & D Combined extinguisher
US4818970A (en) * 1987-08-13 1989-04-04 Gpac, Inc. Fire condition detection and control system for air moving and filtering units

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DE20019808U1 (en) 2001-03-08
DE50110599D1 (en) 2006-09-14
EP1208875A2 (en) 2002-05-29
ATE334728T1 (en) 2006-08-15
EP1208875A3 (en) 2002-06-26
ES2269276T3 (en) 2007-04-01

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