Classifications

• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
  • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
  • A62D1/0071—Foams
• • A—HUMAN NECESSITIES
  • A62—LIFE-SAVING; FIRE-FIGHTING
  • A62C—FIRE-FIGHTING
  • A62C19/00—Hand fire-extinguishers in which the extinguishing substance is expelled by an explosion; Exploding containers thrown into the fire
• • 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
  • A62C99/0036—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using foam

Definitions

• the present invention relates to, for example, a throwing fire extinguisher, and more particularly to a fire extinguishing agent used for a throwing fire extinguisher.
• Patent Document 1 discloses a fire extinguishing agent mainly composed of anhydrous sodium carbonate, ammonium sulfate, and urea
• Patent Document 2 discloses a fire extinguishing agent mainly composed of diammonium hydrogen phosphate and ammonium bicarbonate.
• Patent Document 3 proposes a throwing fire extinguisher in which a fire extinguishing agent is sealed in a container that bursts by impact.
• the throwing fire extinguisher of Patent Document 3 is an excellent instrument in that it can be extinguished away from the source of the fire, but it is difficult to extinguish unless the fire extinguisher used can cover the flame instantly.
• JP 2001-379015 A Japanese Patent No. 4437053 Japanese Patent No. 3081531
• the generation of non-combustible gas which is an important factor for the oxygen-blocking fire extinguishing, is instantaneous in the fire extinguishing mechanism, and when used as a throwing fire extinguisher, the container breaks at any part of the flame.
• the fire extinguishes inadequately without the extinguishing agent or suffocating gas generated from the extinguishing agent covering the entire flame.
• the present invention is intended to solve such problems in the prior art, and an object of the present invention is to provide a fire extinguishing agent that uses generated suffocating gas without waste.
• the fire extinguisher according to claim 1 of the present application is a foam which spreads so as to cover the combustion surface without letting out the inorganic salt which decomposes and generates carbon dioxide gas and ammonia gas by the heat of the flame upon extinguishing the fire. It is made by mixing the agent.
• hydrolyzed protein foam extinguishing agent Is generated even if 10-20% (wt%) of foam extinguishing agent or a plurality of foam extinguishing agents are mixed with agitation, hydrocarbon surface active foam, fluorine surface active foam It was set as the range which does not have big influence on.
• a normal foam extinguisher or water film foam extinguisher is used by adjusting the concentration to 3 to 6% at the time of use, but the extinguisher of the present invention has a foaming component of 10 to 20% (wt%).
• the point is a feature and an essential configuration.
• the foam extinguisher is usually mixed with water, foamed by a fire extinguishing agent spray nozzle, and supplied to the fire part in a foamed state, a high-pressure spray device is required when there is a distance from the fire part.
• the fire extinguisher of the present invention When used as a throw-out type fire extinguisher, the fire extinguisher is thrown into the fire part in the entire container and destroyed, so it is possible to extinguish the fire within the reach of throwing, and it is superior to a normal foam fire extinguisher It becomes a characteristic.
• the fire extinguishing agent of the present invention having such a configuration has improved the sealing performance of the entire flame due to the high incombustible gas generation rate and the foaming agent that does not escape the derived gas.
• ammonium bicarbonate, potassium carbonate, diammonium hydrogen phosphate and ammonium sulfate are dissolved as basic materials for generating carbon dioxide gas and ammonia gas by thermal decomposition.
• thermal decomposition hardly occurs in the range of 70 ° C. to 90 ° C. of the claim 1, but when the acid side or the alkaline side is touched on the acidic side or alkaline side during the dissolution process, carbon dioxide gas is present on the strongly acidic side. However, since ammonia gas is generated on the strong alkali side, it is prepared so that the solution is always kept near neutrality.
• this fire extinguisher When using this fire extinguisher as a throw-out type fire extinguisher, select and fill a container that has no problem in transportation and storage and can be destroyed by throwing during actual fire extinguishing use.
• the container is made up of only resin that does not use a filler or other binder so that it can be destroyed relatively easily when thrown, and the thickness of the container should be controlled for the purpose of obtaining strength during transportation.
• a fire extinguisher with a different amount of foaming agent added was prepared, and the appropriate amount of foaming agent added was determined by a simple fire fighting experiment using gasoline as the fire source.
• Alpha foam 310R manufactured by Yamato Protech Co., Ltd. was used as the foaming agent.
• the fire extinguishing experiment was conducted once with the foaming agent as 1% (weight%, the same applies hereinafter). In this case, the fire could not be extinguished and the remaining area was 40% or more.
• the fire extinguishing experiment was conducted 3 times with 3% foaming agent. In this case, the fire could not be extinguished three times, and the remaining area was 27-36%.
• the fire extinguishing experiment was conducted twice with 5% foaming agent. In this case, the fire could be extinguished in less than 5 seconds and there was no recurrence, but the remaining fire could not be extinguished and the remaining area was 35%.
• the fire extinguishing experiment was conducted twice with the foaming agent at 6%. In this case, the fire could be extinguished in less than 5 seconds and there was no recurrence, but the remaining fire could not be extinguished and the remaining area was 40%.
• the fire extinguishing experiment was conducted 3 times with 8% foaming agent. In this case, the fire could be extinguished twice in less than 5 seconds and there was no recurrence, but the remaining one could not be extinguished and the remaining area was 30%.
• the fire extinguishing experiment was conducted 3 times with 10% foaming agent. All three fires could be extinguished in less than 5 seconds and there was no recurrence.
• the fire extinguishing experiment was conducted twice with the foaming agent at 12%. Both could be extinguished in less than 5 seconds and there was no recurrence.
• the fire extinguishing experiment was conducted twice with the foaming agent at 14%. Both could be extinguished in less than 5 seconds and there was no recurrence.
• the fire extinguishing experiment was conducted twice with 18% foaming agent. Both could be extinguished in less than 5 seconds and there was no recurrence.
• the fire extinguishing experiment was conducted 3 times with a foaming agent of 22%. In this case, the fire could be extinguished in less than 5 seconds and there was no recurrence, but the remaining one could not be extinguished and the remaining area was 20%.
• the use of the fire extinguisher for a throwing fire extinguisher of the present invention makes it possible to provide a fire extinguishing extinguisher for initial fire fighting that does not select the fire site by enclosing the fire extinguisher in a small capacity throwing container.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Fire-Extinguishing Compositions (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

Country Status (3)

Cited By (19)

Citations (5)

Family Cites Families (1)

• 2012
  • 2012-03-29 WO PCT/JP2012/058349 patent/WO2013145207A1/fr not_active Ceased
  • 2012-03-29 RU RU2014143538A patent/RU2014143538A/ru not_active Application Discontinuation
  • 2012-03-29 JP JP2014507173A patent/JP5928919B2/ja not_active Expired - Fee Related

Patent Citations (5)

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