EP1132115A1 - Method and device to mix a compressed gas with a foam building fire-fighting fluid - Google Patents

Method and device to mix a compressed gas with a foam building fire-fighting fluid Download PDF

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Publication number
EP1132115A1
EP1132115A1 EP01890059A EP01890059A EP1132115A1 EP 1132115 A1 EP1132115 A1 EP 1132115A1 EP 01890059 A EP01890059 A EP 01890059A EP 01890059 A EP01890059 A EP 01890059A EP 1132115 A1 EP1132115 A1 EP 1132115A1
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EP
European Patent Office
Prior art keywords
extinguishing agent
compressed gas
source
pressure
mixing chamber
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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.)
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EP01890059A
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German (de)
French (fr)
Inventor
Andreas Zeller
Peter Kranl
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Lenzing Technik GmbH
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Lenzing Technik GmbH
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Publication of EP1132115A1 publication Critical patent/EP1132115A1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam

Definitions

  • the invention relates to a device for admixing a compressed gas to a foam-forming extinguishing agent liquid.
  • extinguishing devices For firefighting operations that require rapid intervention at the site Emergency vehicles, e.g. B. at airports as so-called advance vehicles, with extinguishing devices used, which the entire intended for the respective purpose Carry the amount of extinguishing agent with you.
  • extinguishing devices are e.g. B. from DE-C 2846150 and known by the applicant under the name "Poly extinguishing systems".
  • the extinguishing agent is in a storage container Pressurized compressed air and conveyed to the ejection device by means of this pressure.
  • Another option is to convey the extinguishing agent from unpressurized storage containers by means of a pump device.
  • the foam-forming extinguishing agent liquid can already be premixed as a premix become, or during use by adding foaming agent to a primary Extinguishing media, usually water, are formed.
  • Foaming can be caused by the addition of air from the environment through the Suction effect of the conveyed extinguishing agent take place in the ejection device.
  • CAFS Compressed Air Foam System
  • the present invention has as its object to avoid these disadvantages and one Device for admixing a compressed gas to a foam To provide extinguishing agent liquid.
  • a device for admixing a compressed gas to a foam-forming extinguishing agent liquid consisting of an extinguishing agent source 7, a source of the compressed gas 9, a mixing chamber 6, a first line 11 of the source of the compressed gas to the mixing chamber, a second line 12 from the Extinguishing agent source to the mixing chamber, and is characterized in that the source of the compressed gas is a pressure vessel.
  • a major advantage of the invention is that with rapidly fluctuating Extinguishing agent application much faster the amount of gas required to form the ideal Foam composition can be provided by reducing the Pressure of the compressed gas supplied by the pressure vessel more quickly on the changed Conditions can be reacted to than with the relatively sluggish compressor system.
  • the source of extinguishing agent can be from an unpressurized one Extinguishing agent storage container and a pump device exist. In this case Extinguishing agent from the reservoir through the second line to the pump system Mixing chamber transported.
  • the extinguishing agent source can be designed as a pressure container be in which the extinguishing agent is pressurized by means of a propellant and by this pressure is conveyed through the second line to the mixing chamber.
  • the propellant used to pressurize the extinguishing agent may also be the source of the compressed gas in this embodiment be removed.
  • the source of the compressed gas is connected to the source of extinguishing agent via a line.
  • the source of the compressed gas thus takes on two tasks: it supplies the extinguishing agent source with the propellant required to maintain the pressure and at the same time delivers the compressed gas to the mixing chamber.
  • the extinguishing agent can already act as a foam-forming extinguishing agent so-called premix. But it is also possible to do this during operation Foam agent in the second line between the extinguishing agent source and the mixing chamber using a mixing device to mix the primary extinguishing agent, usually water.
  • Fig. 1, 1 designates a central controller, which admixes the for each Operation intended amount of gas to the foam-forming extinguishing agent in the mixing chamber, for. B. controls.
  • the extinguishing agent is supplied from the extinguishing agent source 7 either by means of a pump or by means of Pressure is conveyed through the second line 12 as an extinguishing agent line to the mixing chamber 6. If the extinguishing agent is not present as a foam-forming extinguishing agent liquid, as a premix, there is a mixing device for extinguishing agent at one point of the second line 12 intended.
  • pressure vessels are provided as the source for the compressed gas 9 e.g. Contain air or nitrogen under pressure.
  • Conventional pressure vessels such as Compressed air bottles are used. These usually contain compressed gas in one Amount from 4 1 to 50 1 under a pressure of 200000 hPa bar to 300000 hPa. It can multiple pressure vessels can be used.
  • the compressed gas is a flow control element 3, for. B. a shut-off valve, via a Pressure regulator 5 relaxed to the required operating pressure and via a first line 11 led into the mixing chamber 6.
  • the blowing agent is mixed with the foam-forming extinguishing agent liquid mixed to a homogeneous dispersion.
  • the gas is fed into the mixing chamber by means of the controller 1, e.g. B. with help predetermined characteristics.
  • the controller e.g. B. with help predetermined characteristics.
  • the pressure regulator that sets the intended operating pressure of the gas.
  • the flow rates are by means of flow rate measuring elements 8, 10 in the lines 11, 12 determined and conveyed to the controller.
  • Another way of tuning is to measure the differential pressures, by means of pressure measuring elements 2, 4, the volume flows of extinguishing agent or gas and adjustment the necessary operating pressure of the gas.
  • the dispersion formed in the mixing chamber 6 passes through a Extinguishing agent delivery line 13 to an ejection device (not shown). By the pressure release after ejection, the extinguishing foam is formed.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)

Abstract

The appliance to generate and deliver a fire extinguishing foam has a compressed gas vessel (9) connected to the mixing chamber (6), which takes in the fire extinguishing agent from its supply store (7). The extinguisher supply (7) is not under pressure with a pump, or it is under pressure with a compressed gas. The gas container (9) has 4-50 l air or nitrogen under a pressure of 200000-300000 hPa.

Description

Die Erfindung betrifft eine Vorrichtung zum Zumischen eines komprimierten Gases zu einer schaumbildenden Löschmittelflüssigkeit.The invention relates to a device for admixing a compressed gas to a foam-forming extinguishing agent liquid.

Für Löscheinsätze, die ein möglichst rasches Eingreifen am Einsatzort erfordern, werden Einsatzfahrzeuge, z. B. bei Flughäfen als sog. Vorausfahrzeuge, mit Löschvorrichtungen eingesetzt, welche die gesamte für den jeweiligen Einsatzzweck vorgesehene Löschmittelmenge mit sich führen. Derartige Löschvorrichtungen sind z. B. aus der DE-C 2846150 und unter der Bezeichnung "Polylöschanlagen" von der Anmelderin bekannt. In derartigen Löschvorrichtungen wird das Löschmittel in einem Vorratsbehälter durch Druckluft unter Druck gesetzt und mittels dieses Druckes zur Auswurfvorrichtung befördert.For firefighting operations that require rapid intervention at the site Emergency vehicles, e.g. B. at airports as so-called advance vehicles, with extinguishing devices used, which the entire intended for the respective purpose Carry the amount of extinguishing agent with you. Such extinguishing devices are e.g. B. from DE-C 2846150 and known by the applicant under the name "Poly extinguishing systems". In such extinguishing devices, the extinguishing agent is in a storage container Pressurized compressed air and conveyed to the ejection device by means of this pressure.

Eine weitere Möglichkeit ist die Förderung des Löschmittels aus drucklosen Vorratsbehältern mittels einer Pumpvorrichtung.Another option is to convey the extinguishing agent from unpressurized storage containers by means of a pump device.

Die schaumbildende Löschmittelflüssigkeit kann bereits vorgemischt, als Premix, mitgeführt werden, oder während des Einsatzes durch Zumischung von Schaummittel zu einem primären Löschmittel, meist Wasser, gebildet werden.The foam-forming extinguishing agent liquid can already be premixed as a premix become, or during use by adding foaming agent to a primary Extinguishing media, usually water, are formed.

Die Schaumbildung kann durch Zumischung von Luft aus der Umgebung durch den Sogeffekt des geförderten Löschmittels in der Auswurfvorrichtung erfolgen.Foaming can be caused by the addition of air from the environment through the Suction effect of the conveyed extinguishing agent take place in the ejection device.

Zur Erzielung einer höheren Wurfweite und/oder eines Schaumes mit besonderen Eigenschaften ist bekannt, durch Zumischung von Treibmittel in Form von komprimierter Luft zum Löschmittel in einer Mischkammer zunächst eine möglichst homogene Dispersion zu bilden, die bei Austritt aus der Auswurfvorrichtung durch die Druckentspannung den Löschschaum bildet. Derartige Systeme sind unter der Bezeichnung Compressed Air Foam System (CAFS) am Markt, eine spezielle Ausführungsform ist z. B. aus der US 5,255,747 bekannt.To achieve a higher throw and / or a foam with special Properties are known by admixing propellants in the form of compressed Air to the extinguishing agent in a mixing chamber first of all a homogeneous dispersion to form, which when exiting the ejection device by the pressure release Extinguishing foam forms. Such systems are called Compressed Air Foam System (CAFS) on the market, a special embodiment is e.g. B. from US 5,255,747 known.

Bei den bekannten Compressed Air Foam Systemen wird die komprimierte Luft während des Betriebes durch mitgeführte Kompressoren erzeugt. In the known compressed air foam systems, the compressed air during the Operation generated by carried compressors.

Die Nachteile solcher Kompressorsysteme bestehen in einem hohen apparativen Aufwand, einem hohen Wartungsbedarf, einem nach oben begrenzten erreichbaren Druck, möglichen Druckschwankungen während des Betriebes, einer aufwendigen Steuerung und insbesondere einer geringeren Flexibilität. Da der Druck von Kompressorsystemen nach oben begrenzt ist und ein möglichst konstantes Verhältnis von komprimiertem Gas und Löschmittel für eine optimale Löschwirkung angestrebt werden soll, ist außerdem die mögliche Auswurfleistung ebenfalls nach oben begrenzt, bzw. es kann zu Schwankungen des Verhältnisses aus komprimiertem Gas und Löschmittel bei einer raschen Veränderung der momentanen Auswurfmenge kommen.The disadvantages of such compressor systems are the high expenditure on equipment, a high maintenance requirement, an upper limited achievable pressure, possible Pressure fluctuations during operation, complex control and in particular less flexibility. Because the pressure of compressor systems is capped and a constant ratio of compressed gas and extinguishing agent for one optimal extinguishing effect should also be aimed at, the possible ejection performance also limited upwards, or it can lead to fluctuations in the ratio compressed gas and extinguishing agent with a rapid change in the current Ejection amount come.

Die vorliegende Erfindung stellt sich die Aufgabe, diese Nachteile zu vermeiden und eine Vorrichtung zum Zumischen eines komprimierten Gases zu einer schaumbildenden Löschmittelflüssigkeit zur Verfügung zu stellen.The present invention has as its object to avoid these disadvantages and one Device for admixing a compressed gas to a foam To provide extinguishing agent liquid.

Diese Aufgabe wird gelöst mit einer Vorrichtung zum Zumischen eines komprimierten Gases zu einer schaumbildenden Löschmittelflüssigkeit bestehend aus einer Löschmittelquelle 7, einer Quelle des komprimierten Gases 9, einer Mischkammer 6, einer ersten Leitung 11 von der Quelle des komprimierten Gases zur Mischkammer, einer zweiten Leitung 12 von der Löschmittelquelle zur Mischkammer, und ist dadurch gekennzeichnet, daß die Quelle des komprimierten Gases ein Druckbehälter ist.This object is achieved with a device for admixing a compressed gas to a foam-forming extinguishing agent liquid consisting of an extinguishing agent source 7, a source of the compressed gas 9, a mixing chamber 6, a first line 11 of the source of the compressed gas to the mixing chamber, a second line 12 from the Extinguishing agent source to the mixing chamber, and is characterized in that the source of the compressed gas is a pressure vessel.

Ein wesentlicher Vorteil der Erfindung besteht darin, daß bei rasch schwankender Löschmittelausbringung viel rascher die benötigte Gasmenge zur Bildung der idealen Schaumzusammensetzung bereitgestellt werden kann, da durch eine Verminderung des Druckes des vom Druckbehälter gelieferten komprimierten Gases rascher auf die veränderten Bedingungen reagiert werden kann, als bei dem relativ trägen Kompressorsystem.A major advantage of the invention is that with rapidly fluctuating Extinguishing agent application much faster the amount of gas required to form the ideal Foam composition can be provided by reducing the Pressure of the compressed gas supplied by the pressure vessel more quickly on the changed Conditions can be reacted to than with the relatively sluggish compressor system.

Die Löschmittelquelle kann in einer Ausführungsform aus einem drucklosen Löschmittelvorratsbehälter und einer Pumpvorrichtung bestehen. In diesem Fall wird das Löschmittel mittels des Pumpsystems aus dem Vorratsbehälter durch die zweite Leitung zur Mischkammer befördert. In one embodiment, the source of extinguishing agent can be from an unpressurized one Extinguishing agent storage container and a pump device exist. In this case Extinguishing agent from the reservoir through the second line to the pump system Mixing chamber transported.

In einer weiteren Ausführungsform kann die Löschmittelquelle als Druckbehälter ausgebildet sein, in dem das Löschmittel mittels eines Treibmittels unter Druck gesetzt wird und durch diesen Druck durch die zweite Leitung zur Mischkammer befördert wird.In a further embodiment, the extinguishing agent source can be designed as a pressure container be in which the extinguishing agent is pressurized by means of a propellant and by this pressure is conveyed through the second line to the mixing chamber.

Das Treibmittel, mit dem das Löschmittel unter Druck gesetzt wird, kann in dieser Ausführungsform auch der Quelle des komprimierten Gases
entnommen werden. Hierbei ist die Quelle des komprimierten Gases mit der Löschmittelquelle über eine Leitung verbunden. Damit übernimmt die Quelle des komprimierten Gases zwei Aufgaben: Sie versorgt die Löschmittelquelle mit dem zur Aufrechterhaltung des Druckes benötigten Treibmittel und liefert gleichzeitig das komprimierte Gas zur Mischkammer.The propellant used to pressurize the extinguishing agent may also be the source of the compressed gas in this embodiment
be removed. Here, the source of the compressed gas is connected to the source of extinguishing agent via a line. The source of the compressed gas thus takes on two tasks: it supplies the extinguishing agent source with the propellant required to maintain the pressure and at the same time delivers the compressed gas to the mixing chamber.

In der Löschmittelquelle kann das Löschmittel bereits als schaumbildendes Löschmittel, als sogenanntes Premix, vorliegen. Es ist aber auch möglich, während des Betriebes das Schaummittel in der zweiten Leitung zwischen der Löschmittelquelle und der Mischkammer mittels einer Zumischvorrichtung dem primären Löschmittel, meist Wasser, zuzumischen.In the source of the extinguishing agent, the extinguishing agent can already act as a foam-forming extinguishing agent so-called premix. But it is also possible to do this during operation Foam agent in the second line between the extinguishing agent source and the mixing chamber using a mixing device to mix the primary extinguishing agent, usually water.

Die Erfindung wird anhand der nachfolgenden Beschreibung und der Fig. 1 näher erläutert:The invention is explained in more detail with reference to the following description and FIG. 1:

In Fig. 1 bezeichnet 1 eine zentrale Steuerung, welche die Zumischung der für den jeweiligen Betrieb vorgesehenen Gasmenge zum schaumbildenden Löschmittel in der Mischkammer , z. B. durch Kennlinien, steuert.In Fig. 1, 1 designates a central controller, which admixes the for each Operation intended amount of gas to the foam-forming extinguishing agent in the mixing chamber, for. B. controls.

Von der Löschmittelquelle 7 wird das Löschmittel entweder mittels einer Pumpe oder mittels Druck durch die zweite Leitung 12 als Löschmittelleitung, zur Mischkammer 6 befördert. Sollte das Löschmittel nicht als schaumbildende Löschmittelflüssigkeit, als Premix, vorliegen, so ist an einer Stelle der zweiten Leitung 12 eine Zumischvorrichtung für Löschmittel vorgesehen.The extinguishing agent is supplied from the extinguishing agent source 7 either by means of a pump or by means of Pressure is conveyed through the second line 12 as an extinguishing agent line to the mixing chamber 6. If the extinguishing agent is not present as a foam-forming extinguishing agent liquid, as a premix, there is a mixing device for extinguishing agent at one point of the second line 12 intended.

Als Quelle für das komprimierte Gas 9 sind erfindungsgemäß Druckbehälter vorgesehen, die z.B. Luft oder Stickstoff unter Druck enthalten. Es können herkömmliche Druckbehälter wie Preßluftflaschen eingesetzt werden. Diese enthalten üblicherweise komprimiertes Gas in einer Menge von 4 1 bis 50 1 unter einem Druck von 200000 hPa bar bis 300000 hPa. Es können mehrere Druckbehälter verwendet werden.According to the invention, pressure vessels are provided as the source for the compressed gas 9 e.g. Contain air or nitrogen under pressure. Conventional pressure vessels such as Compressed air bottles are used. These usually contain compressed gas in one Amount from 4 1 to 50 1 under a pressure of 200000 hPa bar to 300000 hPa. It can multiple pressure vessels can be used.

Das komprimierte Gas wird über ein Durchflußregelorgan 3, z. B. ein Absperrventil, über ein Druckregelorgan 5 auf den benötigten Betriebsdruck entspannt und über eine erste Leitung 11 in die Mischkammer 6 geführt. In dieser Mischkammer wird das Treibmittel mit der schaumbildenden Löschmittelflüssigkeit zu einer möglichst homogenen Dispersion vermischt.The compressed gas is a flow control element 3, for. B. a shut-off valve, via a Pressure regulator 5 relaxed to the required operating pressure and via a first line 11 led into the mixing chamber 6. In this mixing chamber, the blowing agent is mixed with the foam-forming extinguishing agent liquid mixed to a homogeneous dispersion.

Die Zufuhr des Gases in die Mischkammer erfolgt mittels der Steuerung 1, z. B. mit Hilfe vorgegebener Kennlinien. In Abhängigkeit der gerade geförderten Löschmittelmenge wird das Druckregelorgan angesteuert, das den vorgesehenen Betriebsdruck des Gases einstellt. Die Durchflußmengen werden mittels Durchflußmengenmeßorganen 8, 10 in den Leitungen 11, 12 festgestellt und an die Steuerung vermittelt.The gas is fed into the mixing chamber by means of the controller 1, e.g. B. with help predetermined characteristics. Depending on the amount of extinguishing agent being pumped controlled the pressure regulator that sets the intended operating pressure of the gas. The flow rates are by means of flow rate measuring elements 8, 10 in the lines 11, 12 determined and conveyed to the controller.

Eine weitere Möglichkeit der Abstimmung besteht in einer Messung der Differenzdrücke, mittels Druckmeßorganen 2, 4, der Volumsströme an Löschmittel bzw. Gas und Einstellung des nötigen Betriebsdruckes des Gases.Another way of tuning is to measure the differential pressures, by means of pressure measuring elements 2, 4, the volume flows of extinguishing agent or gas and adjustment the necessary operating pressure of the gas.

Die in der Mischkammer 6 gebildete Dispersion gelangt über eine Löschmittelausbringungsleitung 13 zu einer Auswurfvorrichtung (nicht dargestellt). Durch die Druckentspannung nach Auswurf wird der Löschschaum gebildet.The dispersion formed in the mixing chamber 6 passes through a Extinguishing agent delivery line 13 to an ejection device (not shown). By the pressure release after ejection, the extinguishing foam is formed.

Claims (5)

Vorrichtung zum Zumischen eines komprimierten Gases zu einer schaumbildenden Löschmittelflüssigkeit bestehend aus einer Löschmittelquelle (7), einer Quelle des komprimierten Gases (9), einer Mischkammer (6), einer ersten Leitung (11) von der Quelle des komprimierten Gases zur Mischkammer und einer zweiten Leitung (12) von der Löschmittelquelle zur Mischkammer,
dadurch gekennzeichnet, daß
die Quelle des komprimierten Gases ein Druckbehälter ist.Device for admixing a compressed gas to a foam-forming extinguishing agent liquid consisting of an extinguishing agent source (7), a source of the compressed gas (9), a mixing chamber (6), a first line (11) from the source of the compressed gas to the mixing chamber and a second Line (12) from the source of the extinguishing agent to the mixing chamber,
characterized in that
the source of the compressed gas is a pressure vessel. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Löschmittelquelle aus einem drucklosen Löschmittelvorratsbehälter und einer Pumpvorrichtung besteht.Apparatus according to claim 1, characterized in that the extinguishing agent source consists of an unpressurized extinguishing agent reservoir and a pump device. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Löschmittelquelle als Druckbehälter ausgebildet ist, in dem das Löschmittel mittels eines Gases unter Druck gesetzt ist.Device according to one of the preceding claims, characterized in that the extinguishing agent source is designed as a pressure container in which the extinguishing agent is pressurized by means of a gas. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Löschmittelquelle mit der Quelle des komprimierten Gases mittels einer Leitung verbunden ist.Apparatus according to claim 3, characterized in that the source of extinguishing agent is connected to the source of the compressed gas by means of a line. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen der Löschmittelquelle und der Mischkammer eine Zumischvorrichtung für Schaummittel vorgesehen ist.Device according to one of the preceding claims, characterized in that a mixing device for foam agent is provided between the source of extinguishing agent and the mixing chamber.
EP01890059A 2000-03-10 2001-03-05 Method and device to mix a compressed gas with a foam building fire-fighting fluid Withdrawn EP1132115A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0016900U AT4223U1 (en) 2000-03-10 2000-03-10 DEVICE FOR ADDING A COMPRESSED GAS TO A FOAMING EXTINGUISHING LIQUID
AT1692000U 2000-03-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006084296A1 (en) * 2005-02-08 2006-08-17 Rosenbauer International Aktiengesellschaft Foam extinguishing device and method for operating it
AT503421B1 (en) * 2006-04-12 2007-10-15 Walter Unverricht FIRE-CLEANING DEVICE USING EXTINGUISHING FOAM
US7458427B2 (en) 2000-03-03 2008-12-02 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846150C2 (en) 1978-10-24 1982-05-06 Erich 7918 Illertissen Müller Rapid deployment foam extinguisher
US5255747A (en) 1992-10-01 1993-10-26 Hale Fire Pump Company Compressed air foam system
DE19520265A1 (en) * 1995-06-02 1996-12-05 Alfons Millitzer Brandschutz U Method of producing extinguisher foam
WO1998051374A2 (en) * 1997-05-14 1998-11-19 Nauchno-Issledovatelsky Institut Nizkikh Temperatur Pri Mai (Moskovskom Aviatsionnom Institute-Tekhnicheskom Universitete) Fire-extinguishing equipment
US5881817A (en) 1997-07-18 1999-03-16 Mahrt; David M. Cold compressed air foam fire control apparatus
WO2000012177A1 (en) * 1998-08-12 2000-03-09 Edvardsen Odd J Method for production of a fire fighting foam, nozzle head and an arrangement in a fire extinguishing installation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846150C2 (en) 1978-10-24 1982-05-06 Erich 7918 Illertissen Müller Rapid deployment foam extinguisher
US5255747A (en) 1992-10-01 1993-10-26 Hale Fire Pump Company Compressed air foam system
DE19520265A1 (en) * 1995-06-02 1996-12-05 Alfons Millitzer Brandschutz U Method of producing extinguisher foam
WO1998051374A2 (en) * 1997-05-14 1998-11-19 Nauchno-Issledovatelsky Institut Nizkikh Temperatur Pri Mai (Moskovskom Aviatsionnom Institute-Tekhnicheskom Universitete) Fire-extinguishing equipment
US5881817A (en) 1997-07-18 1999-03-16 Mahrt; David M. Cold compressed air foam fire control apparatus
WO2000012177A1 (en) * 1998-08-12 2000-03-09 Edvardsen Odd J Method for production of a fire fighting foam, nozzle head and an arrangement in a fire extinguishing installation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7458427B2 (en) 2000-03-03 2008-12-02 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices
WO2006084296A1 (en) * 2005-02-08 2006-08-17 Rosenbauer International Aktiengesellschaft Foam extinguishing device and method for operating it
AT501355B1 (en) * 2005-02-08 2006-12-15 Rosenbauer Int Ag FOAM EXTRACTION DEVICE AND METHOD OF OPERATION THEREOF
CN101184536B (en) * 2005-02-08 2012-01-25 罗森巴赫国际股份公司 Foam extinguishing device and method for operating it
AT503421B1 (en) * 2006-04-12 2007-10-15 Walter Unverricht FIRE-CLEANING DEVICE USING EXTINGUISHING FOAM

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