EP3613471A1 - Fire protection system and method to prevent the extension of a fire in a zone to be protected - Google Patents

Fire protection system and method to prevent the extension of a fire in a zone to be protected Download PDF

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Publication number
EP3613471A1
EP3613471A1 EP18190001.0A EP18190001A EP3613471A1 EP 3613471 A1 EP3613471 A1 EP 3613471A1 EP 18190001 A EP18190001 A EP 18190001A EP 3613471 A1 EP3613471 A1 EP 3613471A1
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EP
European Patent Office
Prior art keywords
fire
water mist
protection system
protected
sensors
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EP18190001.0A
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German (de)
French (fr)
Inventor
Peter Kammer
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Kammer Consulting AG
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Kammer Consulting AG
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Priority to EP18190001.0A priority Critical patent/EP3613471A1/en
Priority to DK19192663.3T priority patent/DK3613472T3/en
Priority to EP19192663.3A priority patent/EP3613472B1/en
Publication of EP3613471A1 publication Critical patent/EP3613471A1/en
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water

Definitions

  • the present invention relates to a fire protection system for preventing the spread of fire according to claim 1 and a method for preventing the spread of fire according to claim 7.
  • sprinkler systems consist of a closed pipe power network, which is usually mounted on or in the ceiling.
  • the individual sprinklers are geometrically distributed over the ceiling surface in this pipe performance network and closed by means of thermocouples that react to the heat of the fire.
  • thermocouples In the event of a fire, these thermocouples are heated by the rising heat of the fire and, when the triggering conditions have been reached thermally, release the fire water at certain points where the greatest heat is generated.
  • This well-known system pursues the goal of only selectively Water-saving, spread over the source of the fire. Sprinklers therefore aim to protect the area below the triggered sprinklers and to prevent the spread of fire.
  • the present invention has for its object to provide a fire protection system and a method for preventing the spread of fire, which is optimized to prevent the spread of fires of electric vehicles, enables efficient use of the available water resources and offers maximum protection even with limited water supply.
  • the basis of the invention is a fire protection system consisting of a low or high pressure water mist deluge extinguishing system 1 with water mist nozzles 111, and sensors 2 ( Figure 1 ).
  • the sensors 2 and the water mist nozzles 111 are distributed over a zone to be protected, preferably in a type of grid over the entire ceiling area, so that fire monitoring and fire fighting is ensured across the entire area to be protected.
  • the sensors 2 are used to measure the temperature and / or the heat radiation and / or the infrared radiation and / or the detection of flames and / or smoke and / or combustion gases. It is particularly advantageous if the sensors are used in particular to detect those fire properties that indicate a battery fire (e.g. extreme heat radiation or temperature). Before and during the fire, sensors 2 measure e.g. the room temperature under the ceiling and continuously evaluate the radiation energy of the fire. The information recorded by the sensors 2 is used to trigger and control the water mist deluge extinguishing system 1. To better assess the situation, cameras can also be used as sensors in a possible embodiment variant of the invention.
  • the water mist deluge extinguishing system 1 consists of a pipeline network 12 which is connected to the water supply of the building and / or to a water reservoir and to which the water mist nozzles 111 are connected in nozzle groups 11.
  • Each nozzle group 11 has a controllable area valve 13, which switches all water mist nozzles 111 of the nozzle group 11 on and off simultaneously, can be controlled individually and independently of the other nozzle groups 11.
  • Each nozzle group 11 consists of at least one water mist nozzle 111 and generates a water mist in the event of a fire. This water mist absorbs the heat of the fire and thus causes a strong cooling of the area B in which the nozzle group 11 is arranged.
  • the zone to be protected is thus divided into various individually controllable areas B, which can be individually cooled in the event of a fire.
  • the areas B of each nozzle group 11 in the zone to be protected can be separated or have overlaps.
  • the incoming heat radiation and / or the temperature is continuously measured with the sensors 2 in each area B.
  • areas B of the zone to be protected in which the greatest heat radiation and / or temperature exist, and therefore the greatest risk that secondary fires would break out, are determined.
  • the water mist deluge extinguishing system 1 is then controlled sectionally on the basis of this information in order to strongly cool these targeted areas B ( Figure 2 ).
  • the cooling of these areas B and any adjacent areas B with a correspondingly high temperature and / or heat radiation avoids that in the event of a vehicle fire, other vehicles or objects removed from the fire are ignited via the radiant heat and the fire spreads as a chain fire.
  • an electric vehicle could burn out without the surrounding cars catching fire.
  • not only individual water mist nozzles 111 are triggered selectively, but also the entire nozzle groups 11 of the targeted areas B in order to counter the heat radiation with a sufficiently large and cool buffer volume. Since the water mist Deluge extinguishing system 1 is also controlled sectionally and only those nozzle groups 11th are triggered in areas B where there is the greatest risk of causing secondary fires via radiation energy, the entire performance of the water mist deluge extinguishing system 1 can be focused in these areas B and maximum local cooling can be achieved there.
  • the sectional control of the water mist deluge extinguishing system 1 with the area valves 13 can take place both automatically and manually, so that, depending on the development of the fire, individual areas B of the zone to be protected can be switched or switched off by measuring the temperature or the radiant heat. It is essential that the fire protection system can counter the dynamics of fire development with cooling performance.
  • the fire protection system has receivers with which such a fire signal can be recorded so that the fire protection system can be put into operation at an early stage.
  • the fire protection system is provided with communication means with which a fire alarm, e.g. can be transmitted to the fire brigade or to a control body.
  • the water mist deluge extinguishing system 1 can be supported with additional feeds, for example for cooling a large area B of a building.
  • These feeds can be put into operation by the fire brigade and come from internal or external sources.
  • the fire brigade can feed normal and / or special extinguishing agents into the water mist Deluge extinguishing system 1.
  • These extinguishing agents can, for example, be foam-forming or are intended for fire loads that are difficult to control, such as in the case of metal fires or lithium battery fires.
  • the fire brigade feeds additional water or heavy foam admixtures via a feed line which is connected to the pipeline network 12. It is important that the feeds can take place in a protected area away from the fire or outside the building.
  • the fire protection system presented prevents the spread of fires with very large heat radiation and is therefore particularly well suited to fighting fires from electric vehicles.
  • the fire protection system presented is also particularly suitable for smaller parking lots that do not need an extinguishing system due to fire protection legislation. The system can easily be retrofitted in these parks on a voluntary basis without a complicated procedure.
  • the fire brigade has the option of feeding additional water for the water mist nozzles into the water mist deluge extinguishing system 1 and / or the cooling process via manual control from a safe area away from the fire using sensors 2 control, at best a video surveillance in the fire area is advantageous.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fire Alarms (AREA)

Abstract

Brandschutzsystem zur Verhinderung der Brandausbreitung in einer zu schützenden Zone, mit einer Wassernebel-Deluge-Löschanlage 1 und Sensoren 2, die anlaufende, erkennbare oder bereits entstandene Brände detektieren, melden und die Wassernebel-Deluge-Löschanlage 1 sektionell auslösen, wobei die Wassernebel-Deluge-Löschanlage 1 Düsen-Gruppen 11 mit jeweils mindestens einer Wassernebel-Düse 111 aufweist, mit welchen in gezielten Bereichen B der zu schützenden Zone ein Wassernebel erzeugbar ist. Verfahren zur Verhinderung der Brandausbreitung in einer zu schützenden Zone, wobei gezielte Bereiche B der zu schützenden der Zone gekühlt werden, wobei Sensoren 2 zur Verifizierung der Hitzestrahlung die Möglichkeit bieten die Brandbekämpfung dynamisch entweder manuell oder automatisiert zu steuern.Fire protection system to prevent the spread of fire in a zone to be protected, with a water mist deluge extinguishing system 1 and sensors 2, which detect incoming, recognizable or already occurring fires, report and trigger the water mist deluge extinguishing system 1 sectionally, the water mist deluge Extinguishing system 1 has nozzle groups 11, each with at least one water mist nozzle 111, with which a water mist can be generated in targeted areas B of the zone to be protected. Method for preventing the spread of fire in a zone to be protected, targeted areas B of the zone to be protected being cooled, sensors 2 for verifying the heat radiation offering the possibility of dynamically controlling the fire fighting either manually or automatically.

Description

Die vorliegende Erfindung betrifft ein Brandschutzsystem zur Verhinderung der Brandausbreitung gemäss Patentanspruch 1 und ein Verfahren zur Verhinderung der Brandausbreitung gemäss Patentanspruch 7.The present invention relates to a fire protection system for preventing the spread of fire according to claim 1 and a method for preventing the spread of fire according to claim 7.

Im heutigen Stand der Technik werden Auto-Einstellhallen oder Parkings mit technischen Brandschutz-Massnahmen geschützt, wobei meistens Sprinkleranlagen zum Einsatz kommen. Sprinkleranlagen bestehen aus einem geschlossenen Rohrleistungsnetz, welches in der Regel an oder in der Raumdecke montiert ist. In einer Art Rasterung sind die einzelnen Sprinkler geometrisch über die Deckenfläche verteilt in diesem Rohrleistungsnetz montiert und mittels auf Brandwärme reagierenden Thermoelementen verschlossen. Im Brandfall werden diese Thermoelemente durch die aufsteigende Brandwärme erhitzt und geben, wenn die Auslösebedingungen thermisch erreicht sind, den Löschwasseraustritt punktuell, dort wo die grösste Hitze entsteht, frei. Dieses bekannte System verfolgt das Ziel, den Wasseraustritt nur punktuell, Wasser-sparend, auf den Brandherd zu verteilen. Sprinkler haben also das Ziel, die Fläche unterhalb der ausgelösten Sprinkler zu schützen und die Brandausbreitung zu verhindern.In today's state of the art, car parking spaces or parking lots are protected with technical fire protection measures, whereby mostly sprinkler systems are used. Sprinkler systems consist of a closed pipe power network, which is usually mounted on or in the ceiling. In a kind of grid, the individual sprinklers are geometrically distributed over the ceiling surface in this pipe performance network and closed by means of thermocouples that react to the heat of the fire. In the event of a fire, these thermocouples are heated by the rising heat of the fire and, when the triggering conditions have been reached thermally, release the fire water at certain points where the greatest heat is generated. This well-known system pursues the goal of only selectively Water-saving, spread over the source of the fire. Sprinklers therefore aim to protect the area below the triggered sprinklers and to prevent the spread of fire.

Neuerdings sind immer mehr elektrische Fahrzeuge mit High-Tech-Batterien betrieben. Diese Batterien haben den Nachteil, dass sie, wenn sie in Brand geraten, unter Umständen enorme Brandhitze explosionsartig freisetzen. Diese Brandhitze stellt eine bisher in Parkhäusern nicht bekannte Hitzestrahlung dar. Sekundärbrände sind die Folge, das heisst, dass wenn die Batterie eines Elektrofahrzeugs in Brand gerät, nicht nur das in Brand geratene Auto brennt, sondern sehr schnell auch alles darum herum, was im Strahlungsumfeld dieses Autos steht. Derartige Brände sind für die Feuerwehrkräfte sehr gefährlich und es ist praktisch unmöglich, in der Enge eines Parkhauses die unkontrollierte Hitze- und Brandausbreitung mit klassischen Methoden zu löschen, weil diese Batterien auch ohne Sauerstoff weiter brennen, ausser sie würden mit extrem viel Wasser "ersäuft". Diese Wassermenge steht allerdings nicht an jedem beliebigen Ort zur Verfügung.Recently, more and more electric vehicles are powered by high-tech batteries. The disadvantage of these batteries is that if they catch fire, they may release enormous amounts of fire heat. This fire heat represents a heat radiation not previously known in parking garages. Secondary fires are the result, that is, that if the battery of an electric vehicle catches fire, not only the car that catches fire will burn, but very quickly everything around it in the radiation environment this car is standing. Such fires are very dangerous for firefighters and it is practically impossible to use conventional methods to extinguish the uncontrolled spread of heat and fire in the confines of a parking garage, because these batteries continue to burn even without oxygen, unless they are "drowned" with an excessive amount of water. , However, this amount of water is not available at every location.

Die vorliegende Erfindung stellt sich nunmehr die Aufgabe, ein Brandschutzsystem und ein Verfahren zur Verhinderung der Brandausbreitung bereitzustellen, welches zur Verhinderung der Ausbreitung von Bränden von Elektrofahrzeugen optimiert ist, einen effizienten Gebrauch der verfügbaren Wasserressourcen ermöglicht und auch mit beschränkter Wasserversorgung maximalen Schutz bietet.The present invention has for its object to provide a fire protection system and a method for preventing the spread of fire, which is optimized to prevent the spread of fires of electric vehicles, enables efficient use of the available water resources and offers maximum protection even with limited water supply.

Diese Aufgabe lösen das Brandschutzsystem gemäss Patentanspruch 1 und ein entsprechendes Verfahren gemäss Patentanspruch 7. Weitere Merkmale und Ausführungsbeispiele gehen aus den abhängigen Ansprüchen hervor und deren Vorteile sind in der nachfolgenden Beschreibung erläutert.This problem is solved by the fire protection system according to claim 1 and a corresponding method according to claim 7. Further features and exemplary embodiments emerge from the dependent claims and their advantages are explained in the following description.

In den Zeichnungen zeigt:

Figur 1
Brandschutzsystem
Figur 2
Brandschutzsystem im Brandfall, in Betrieb
In the drawings:
Figure 1
Fire protection system
Figure 2
Fire protection system in case of fire, in operation

Die Figuren stellen mögliche Ausführungsbeispiele dar, welche in der nachfolgenden Beschreibung erläutert werden.The figures represent possible exemplary embodiments, which are explained in the following description.

Grundlage der Erfindung ist ein Brandschutzsystem bestehend aus einer Nieder- oder Hochdruck Wassernebel-Deluge-Löschanlage 1 mit Wassernebel-Düsen 111, und aus Sensoren 2 (Figur 1). Die Sensoren 2 und die Wassernebel-Düsen 111 sind über eine zu schützende Zone verteilt, vorzugsweise in einer Art Rasterung über die gesamte Deckenfläche, damit die Brandüberwachung und -bekämpfung flächig über die zu schützende Zone sichergestellt ist.The basis of the invention is a fire protection system consisting of a low or high pressure water mist deluge extinguishing system 1 with water mist nozzles 111, and sensors 2 ( Figure 1 ). The sensors 2 and the water mist nozzles 111 are distributed over a zone to be protected, preferably in a type of grid over the entire ceiling area, so that fire monitoring and fire fighting is ensured across the entire area to be protected.

Die Sensoren 2 dienen der Messung der Temperatur und/oder der Hitzestrahlung und/oder der Infrarotstrahlung und/oder der Detektion von Flammen und/oder Rauch und/oder Brandgasen. Besonders vorteilhaft ist es, wenn die Sensoren insbesondere der Detektion von jenen Brandeigenschaften dienen, die auf einen Batterie-Brand hinweisen (z.B. eine extreme Hitzestrahlung oder Temperatur). Vor und während des Brands messen die Sensoren 2 u.a. die Raumtemperatur unter der Decke und werten die Strahlungsenergie des Brandes laufend aus. Die von den Sensoren 2 erfassten Informationen dienen der Auslösung und Steuerung der Wassernebel-Deluge-Löschanlage 1. Zur besseren Einschätzung der Situation können in einer möglichen Ausführungsvariante der Erfindung als Sensoren auch Kameras eingesetzt werden.The sensors 2 are used to measure the temperature and / or the heat radiation and / or the infrared radiation and / or the detection of flames and / or smoke and / or combustion gases. It is particularly advantageous if the sensors are used in particular to detect those fire properties that indicate a battery fire (e.g. extreme heat radiation or temperature). Before and during the fire, sensors 2 measure e.g. the room temperature under the ceiling and continuously evaluate the radiation energy of the fire. The information recorded by the sensors 2 is used to trigger and control the water mist deluge extinguishing system 1. To better assess the situation, cameras can also be used as sensors in a possible embodiment variant of the invention.

Die Wassernebel-Deluge-Löschanlage 1 besteht aus einem Rohrleitungsnetz 12, welches an die Wasserversorgung des Gebäudes und/oder an ein Wasserreservoir angeschlossen ist und mit welchem die Wassernebel-Düsen 111 in Düsen-Gruppen 11 verbunden sind. Jede Düsen-Gruppe 11 ist mit einem steuerbaren Bereichsventil 13, welches alle Wassernebel-Düsen 111 der Düsen-Gruppe 11 gleichzeitig ein- und ausschaltet, individuell und unabhängig von den anderen Düsen-Gruppen 11 steuerbar. Jede Düsen-Gruppe 11 besteht aus mindestens einer Wassernebel-Düse 111 und erzeugt im Brandfall einen Wassernebel. Dieser Wassernebel nimmt die Hitze des Brandes auf und bewirkt somit eine starke Kühlung des Bereichs B, in welchem die Düsen-Gruppe 11 angeordnet ist. Die zu schützende Zone ist somit in verschiedene individuell steuerbare Bereiche B aufgeteilt, welche im Brandfall einzeln gezielt gekühlt werden können. Je nach Ausführungsvariante der Erfindung können die Bereiche B jeder Düsen-Gruppe 11 in der zu schützenden Zone getrennt sein oder Überlappungen aufweisen.The water mist deluge extinguishing system 1 consists of a pipeline network 12 which is connected to the water supply of the building and / or to a water reservoir and to which the water mist nozzles 111 are connected in nozzle groups 11. Each nozzle group 11 has a controllable area valve 13, which switches all water mist nozzles 111 of the nozzle group 11 on and off simultaneously, can be controlled individually and independently of the other nozzle groups 11. Each nozzle group 11 consists of at least one water mist nozzle 111 and generates a water mist in the event of a fire. This water mist absorbs the heat of the fire and thus causes a strong cooling of the area B in which the nozzle group 11 is arranged. The zone to be protected is thus divided into various individually controllable areas B, which can be individually cooled in the event of a fire. Depending on the variant of the invention, the areas B of each nozzle group 11 in the zone to be protected can be separated or have overlaps.

Im Brandfall wird mit den Sensoren 2 in jedem Bereich B die einkommende Hitzestrahlung und/oder die Temperatur laufend gemessen. Aufgrund dieser Messungen werden die Bereiche B der zu schützenden Zone laufend ermittelt, in welchen die grösste Hitzestrahlung und/oder Temperatur besteht, und somit auch die grösste Gefahr, dass Sekundärbrände ausbrechen würden. Erfindungsgemäss wird die Wassernebel-Deluge-Löschanlage 1 dann anhand dieser Informationen sektionell gesteuert, um diese gezielten Bereiche B stark zu kühlen (Figur 2). Die Kühlung dieser Bereiche B und allfälliger benachbarten Bereiche B mit entsprechend hoher Temperatur und/oder Hitzestrahlung vermeidet, dass beim Brand eines Fahrzeugs weitere, vom Brand entfernte Fahrzeuge oder Gegenstände über die Strahlungshitze entzündet werden und der Brand sich als Kettenbrand ausbreitet. Im Sinne der Erfindung könnte somit ein Elektrofahrzeug ausbrennen, ohne dass die umliegenden Autos in Brand geraten. Zur effizienten und intensiven Raumkühlung werden nicht nur einzelne Wassernebel-Düsen 111 punktuell ausgelöst, sondern die ganzen Düsen-Gruppen 11 der gezielten Bereiche B, um der Hitzestrahlung mit einem genügend grossen und kühlen Puffervolumen zu entgegnen. Da die Wassernebel-Deluge-Löschanlage 1 ausserdem sektionell gesteuert wird und nur jene Düsen-Gruppen 11 ausgelöst werden, in deren Bereiche B die grösste Gefahr besteht, Sekundärbrände via Strahlungsenergie auszulösen, kann die gesamte Leistung der Wassernebel-Deluge-Löschanlage 1 in diesen Bereichen B fokussiert und dort eine maximale lokale Kühlung erreicht werden.In the event of a fire, the incoming heat radiation and / or the temperature is continuously measured with the sensors 2 in each area B. On the basis of these measurements, areas B of the zone to be protected, in which the greatest heat radiation and / or temperature exist, and therefore the greatest risk that secondary fires would break out, are determined. According to the invention, the water mist deluge extinguishing system 1 is then controlled sectionally on the basis of this information in order to strongly cool these targeted areas B ( Figure 2 ). The cooling of these areas B and any adjacent areas B with a correspondingly high temperature and / or heat radiation avoids that in the event of a vehicle fire, other vehicles or objects removed from the fire are ignited via the radiant heat and the fire spreads as a chain fire. According to the invention, an electric vehicle could burn out without the surrounding cars catching fire. For efficient and intensive room cooling, not only individual water mist nozzles 111 are triggered selectively, but also the entire nozzle groups 11 of the targeted areas B in order to counter the heat radiation with a sufficiently large and cool buffer volume. Since the water mist Deluge extinguishing system 1 is also controlled sectionally and only those nozzle groups 11th are triggered in areas B where there is the greatest risk of causing secondary fires via radiation energy, the entire performance of the water mist deluge extinguishing system 1 can be focused in these areas B and maximum local cooling can be achieved there.

Die sektionelle Steuerung der Wassernebel-Deluge-Löschanlage 1 mit den Bereichsventilen 13 kann sowohl automatisch als auch manuell erfolgen, so dass je nach Brandentwicklung über die Messung der Temperatur oder der Strahlungshitze einzelne Bereiche B der zu schützenden Zone dazu geschaltet oder abgestellt werden können. Wesentlich ist, dass das Brandschutzsystem der Dynamik der Brandentwicklung mit Kühlleistung begegnen kann.The sectional control of the water mist deluge extinguishing system 1 with the area valves 13 can take place both automatically and manually, so that, depending on the development of the fire, individual areas B of the zone to be protected can be switched or switched off by measuring the temperature or the radiant heat. It is essential that the fire protection system can counter the dynamics of fire development with cooling performance.

Gewisse Elektrofahrzeuge sind mit Brandmelder versehen, die ein Brandsignal ausgeben, wenn die Gefahr eines Batteriebrand droht oder dieser beginnt. In einer vorteilhaften Ausführungsvariante der Erfindung weist das erfindungsgemässe Brandschutzsystem Empfänger auf, mit welchen ein derartiges Brandsignal aufgenommen werden kann, damit das Brandschutzsystem frühzeitig in Betrieb gesetzt werden kann. In einer möglichen Ausführungsvariante ist das Brandschutzsystem mit Kommunikationsmitteln versehen, mit welchen eine Brandmeldung z.B. an die Feuerwehr oder an eine Kontrollstelle übermittelt werden kann.Certain electric vehicles are equipped with fire detectors that emit a fire signal if there is a risk of a battery fire or if it begins. In an advantageous embodiment variant of the invention, the fire protection system according to the invention has receivers with which such a fire signal can be recorded so that the fire protection system can be put into operation at an early stage. In one possible embodiment variant, the fire protection system is provided with communication means with which a fire alarm, e.g. can be transmitted to the fire brigade or to a control body.

Besonders vorteilhaft ist es, wenn die Wassernebel-Deluge-Löschanlage 1 mit zusätzlichen Einspeisungen unterstützt werden kann, z.B. zur Kühlung eines grossen Bereichs B eines Gebäudes. Diese Einspeisungen können von der Feuerwehr in Betrieb genommen werden und aus internen oder externen Quellen stammen. Von Vorteil ist es zum Beispiel, wenn die Feuerwehr in die Wassernebel-Deluge-Löschanlage 1 normale und/oder spezielle Löschmittel einspeisen können. Diese Löschmittel können zum Beispiel schaumbildend sein oder für schwer beherrschbare Brandlasten gedacht sein, wie zum Beispiel bei Metallbränden oder Lithium-Batteriebränden. In einer möglichen Ausführungsvariante der Erfindung erfolgen zusätzliche Einspeisungen von Wasser oder Schwerschaum-Zumischungen durch die Feuerwehr über eine Einspeiseleitung, die mit dem Rohrleitungsnetz 12 verbunden ist. Wichtig ist dabei, dass die Einspeisungen in einem geschützten, vom Brand entfernten Bereich oder ausserhalb des Gebäudes erfolgen können.It is particularly advantageous if the water mist deluge extinguishing system 1 can be supported with additional feeds, for example for cooling a large area B of a building. These feeds can be put into operation by the fire brigade and come from internal or external sources. It is advantageous, for example, if the fire brigade can feed normal and / or special extinguishing agents into the water mist Deluge extinguishing system 1. These extinguishing agents can, for example, be foam-forming or are intended for fire loads that are difficult to control, such as in the case of metal fires or lithium battery fires. In In a possible embodiment variant of the invention, the fire brigade feeds additional water or heavy foam admixtures via a feed line which is connected to the pipeline network 12. It is important that the feeds can take place in a protected area away from the fire or outside the building.

Das vorgestellte Brandschutzsystem verhindert die Ausbreitung von Bränden mit sehr grosser Hitzestrahlung und ist daher zur Bekämpfung von Bränden von Elektrofahrzeugen besonders gut geeignet. Der Ansatz, nur jene Bereiche gezielt auszulösen, in welchen die grösste Gefahr besteht, dass Sekundärbrände aufgrund der überhöhten Temperatur und/oder Hitzestrahlung ausbrechen, und diese Bereiche B mit einem Wassernebel zu kühlen, eher als diese mit Wasser zu überfluten, vermeidet grössere Folgeschäden durch das Löschwasser und ermöglicht eine erhebliche Wassereinsparung, so dass das Brandschutzsystem auch mit beschränkter Wasserversorgung funktionsfähig ist und einen effizienten Gebrauch der verfügbaren Wasserressourcen macht. Das vorgestellte Brandschutzsystem ist auch für kleinere Parkings besonders gut geeignet, die von der Brandschutzgesetzgebung her keine Löschanlage bräuchten. Das System kann auf freiwilliger Basis ohne kompliziertes Auflageverfahren in diesen Parkings einfach nachgerüstet werden. Um die bestehende Wasserversorgung zu ergänzen, besteht für die Feuerwehr die Möglichkeit, zusätzliches Wasser für die Wassernebel-Düsen in die Wassernebel-Deluge-Löschanlage 1 einzuspeisen und/oder den Kühlvorgang via Handsteuerung aus einem sicheren, vom Brand entfernten Bereich mithilfe der Sensoren 2 zu steuern, wobei allenfalls eine Videoüberwachung im Brandbereich von Vorteil ist.The fire protection system presented prevents the spread of fires with very large heat radiation and is therefore particularly well suited to fighting fires from electric vehicles. The approach of deliberately triggering only those areas where there is the greatest risk of secondary fires breaking out due to the excessive temperature and / or heat radiation, and cooling these areas B with a water mist, rather than flooding them with water, avoids major consequential damage the extinguishing water and enables considerable water savings, so that the fire protection system is functional even with limited water supply and makes efficient use of the available water resources. The fire protection system presented is also particularly suitable for smaller parking lots that do not need an extinguishing system due to fire protection legislation. The system can easily be retrofitted in these parks on a voluntary basis without a complicated procedure. In order to supplement the existing water supply, the fire brigade has the option of feeding additional water for the water mist nozzles into the water mist deluge extinguishing system 1 and / or the cooling process via manual control from a safe area away from the fire using sensors 2 control, at best a video surveillance in the fire area is advantageous.

Claims (10)

Brandschutzsystem zur Verhinderung der Brandausbreitung in einer zu schützenden Zone, mit einer Wassernebel-Deluge-Löschanlage 1 und Sensoren 2, dadurch gekennzeichnet, dass
die Wassernebel-Deluge-Löschanlage 1 Düsen-Gruppen 11 mit jeweils mindestens einer Wassernebel-Düse 111 aufweist, die aufgrund von Informationen der Sensoren 2 steuerbar sind.Fire protection system to prevent the spread of fire in a zone to be protected, with a water mist deluge extinguishing system 1 and sensors 2, characterized in that
the water mist deluge extinguishing system 1 has nozzle groups 11, each with at least one water mist nozzle 111, which can be controlled on the basis of information from the sensors 2. Brandschutzsystem gemäss Anspruch 1,
dadurch gekennzeichnet, dass
jede Düsen-Gruppe 11 individuell, unabhängig von den anderen Düsen-Gruppen 11 steuerbar ist.Fire protection system according to claim 1,
characterized in that
each nozzle group 11 can be controlled individually, independently of the other nozzle groups 11. Brandschutzsystem gemäss einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
jede Düsen-Gruppe 11 mit einem steuerbaren Bereichsventil 13 steuerbar ist, mit welchem alle Wassernebel-Düsen 111 der Düsen-Gruppe 11 gleichzeitig ein- und ausschaltbar sind.Fire protection system according to one or more of the preceding claims,
characterized in that
each nozzle group 11 can be controlled with a controllable area valve 13 with which all water mist nozzles 111 of the nozzle group 11 can be switched on and off simultaneously. Brandschutzsystem gemäss einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Sensoren 2 zur Detektion von Flammen und/oder Rauch und/oder Brandgasen geeignet sind, insbesondere auch von jenen, die einem Batterie-Brand voraus erkennbar sind.Fire protection system according to one or more of the preceding claims,
characterized in that
the sensors 2 are suitable for the detection of flames and / or smoke and / or fire gases, in particular also those that can be detected in advance of a battery fire. Brandschutzsystem gemäss einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Sensoren 2 zur laufenden Messung der Raumtemperatur und laufenden Auswertung der Strahlungshitze des Brandes geeignet sind.Fire protection system according to one or more of the preceding claims,
characterized in that
the sensors 2 are suitable for ongoing measurement of the room temperature and ongoing evaluation of the radiant heat of the fire. Brandschutzsystem gemäss einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Wassernebel-Deluge-Löschanlage 1 ein Rohrleistungsnetz 12 aufweist, mit welchem die Düsen-Gruppen 11 und eine interne oder Einspeiseleitung zum Einspeisen von zusätzlichem Wasser, von Speziallöschmitteln und/oder von schaumbildenden Stoffen verbunden sind.Fire protection system according to one or more of the preceding claims,
characterized in that
the water mist-Deluge extinguishing system 1 has a pipe power network 12 with which the nozzle groups 11 and an internal or feed line for feeding in additional water, special extinguishing agents and / or foam-forming substances are connected. Verfahren zur Verhinderung der Brandausbreitung in einer zu schützenden Zone,
dadurch gekennzeichnet, dass
gezielte Bereiche B der zu schützenden Zone gekühlt werden.Methods of preventing the spread of fire in a zone to be protected,
characterized in that
targeted areas B of the zone to be protected are cooled. Verfahren gemäss Anspruch 7,
dadurch gekennzeichnet, dass
die Kühlung durch Erzeugung eines Wassernebels erzielt wird.Method according to claim 7,
characterized in that
cooling is achieved by generating a water mist. Verfahren gemäss einem oder mehreren der Ansprüche 7 bis 8,
dadurch gekennzeichnet, dass
die Bereiche B gekühlt werden, in welchen die grösste Hitzestrahlung und/oder Temperatur gemessen wird.Method according to one or more of claims 7 to 8,
characterized in that
the areas B are cooled in which the greatest heat radiation and / or temperature is measured. Verfahren gemäss einem oder mehreren der Ansprüche 7 bis 9,
dadurch gekennzeichnet, dass
die brennenden Bereiche, in welchen die grösste Hitzestrahlung stattfindet, mit Sensoren durch laufende Messung der Raumtemperatur und/oder laufende Auswertung der Strahlungsenergie laufend ermittelt werden.Method according to one or more of claims 7 to 9,
characterized in that
the burning areas in which the greatest heat radiation takes place are continuously determined with sensors by continuously measuring the room temperature and / or continuously evaluating the radiation energy.
EP18190001.0A 2018-08-21 2018-08-21 Fire protection system and method to prevent the extension of a fire in a zone to be protected Withdrawn EP3613471A1 (en)

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