EP2204220A1 - Dispositif d'allumage pour extincteurs - Google Patents

Dispositif d'allumage pour extincteurs Download PDF

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Publication number
EP2204220A1
EP2204220A1 EP09180086A EP09180086A EP2204220A1 EP 2204220 A1 EP2204220 A1 EP 2204220A1 EP 09180086 A EP09180086 A EP 09180086A EP 09180086 A EP09180086 A EP 09180086A EP 2204220 A1 EP2204220 A1 EP 2204220A1
Authority
EP
European Patent Office
Prior art keywords
cylindrical body
ignition device
igniter
outer cylindrical
inner cylindrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09180086A
Other languages
German (de)
English (en)
Inventor
Angelo Rondino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Firecom SRL
Original Assignee
Firecom SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Firecom SRL filed Critical Firecom SRL
Publication of EP2204220A1 publication Critical patent/EP2204220A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/22—Elements for controlling or guiding the detonation wave, e.g. tubes
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/009—Methods or equipment not provided for in groups A62C99/0009 - A62C99/0081

Definitions

  • the present invention relates to an electric ignition device for fire extinguishers of the aerosol type.
  • the invention relates to means in a mutually cooperating arrangement which form a guiding device for the electric ignition unit intended for fire extinguishers of the type which use an aerosol or similar mixtures, consisting of a modular, independent, removable and interchangeable assembly.
  • fire extinguishers or “extinguishers” is understood as referring to fire extinguishers of the type which use a solid substance, preferably based on potassium salts or similar mixtures, which are activated by ignition, thus generating the extinguishing mixture.
  • the solid substance may be composed of 90% potassium nitrate and has an aerosol conversion temperature at about 400°C.
  • the extinguishing capacity of 1 kg of potassium nitrate is equivalent to the extinguishing capacity of 1 m 3 of water.
  • the exothermally formed nitrate is completely anhydrous and may therefore be used to extinguish a fire at its outbreak, even in the presence of electrical apparatuses, without the risk of conduction caused by electrolytic phenomena associated with the potassium salt.
  • fire extinguishers as described for example in WO 2007/040560 , have a hollow body which internally includes a chamber which communicates with the exterior by means of openings and which houses a solid substance which, activated by means of an igniter, also called activator, provided inside the solid substance itself, is converted at a given temperature into an aerosol with fire-extinguishing properties and is discharged as an aerosol through the openings of said hollow body.
  • an igniter also called activator
  • the igniter is connected to and/or forms part of a control circuit, which is either electrically operated or battery operated, and is placed within the solid substance for activation thereof and may be operated externally.
  • the igniter may be a resistance, placed near or within the solid substance, thus ensuring suitable activation of the solid substance.
  • the solid substance is completely surrounded by inert material, such as stones, alumina beads or ceramic material.
  • inert material such as stones, alumina beads or ceramic material.
  • the purpose of the inert material is to absorb the heat generated at the time of ignition or activation of the solid substance.
  • Such means preferably consist of an electric igniter for fire extinguishers of the aerosol type as mentioned above, formed by an independent modular assembly which can be easily and safely removed and exchanged such that the periodic maintenance may be performed without having to disassemble the entire fire extinguisher in order to replace and correctly position the igniter.
  • Another object of the present invention is to provide a low-cost ignition device which may be replaced in a simple, safe and practical manner in place of the igniters which are currently used in aerosol fire extinguisher of the known type.
  • the present invention therefore relates to an ignition device for aerosol fire extinguishers which comprises the following means in a mutually cooperating arrangement:
  • Said second cylindrical element constitutes a guide for the end part of the igniter, thus positioning it in the appropriate seat provided within the solid substance, with the inert material which surrounds the solid substance neither hindering nor preventing incorrect positioning, as it happens with the fire extinguishers of the known type.
  • the means which form a guiding device for the ignition unit comprise a double cylindrical body consisting of two coaxial cylinders, i.e. a first outer cylinder in contact with the inert material and a second inner cylinder inside which the igniter is inserted with its end part.
  • This double cylindrical body is fastened in a removable manner to the closing cover of the fire extinguisher by means of a threaded ring nut which also has, fixed thereto, a cable-holder module and/or connector for electrically connecting together the igniter and the ignition operating device.
  • FIGS. 1 to 3 show the means which form the guiding device for the ignition unit, comprising essentially an outer cylindrical body 1, which is fastened to a closing cover 5 of the fire extinguisher for example by means of a thread 7 and lock nut 7', and an inner cylindrical body 2, which is coaxial with the outer cylindrical body 1 and which forms a guide for said inner cylindrical body 2.
  • the inner cylindrical body 2 receives internally an igniter 3 with its conventional end part and with the associated electrical connection 4 for performing ignition.
  • the inner cylindrical body 2 is fastened, for example by means of a thread 8, to a ring nut 6 which has an outer surface which is preferably knurled, shaped or the like so as to facilitate gripping.
  • This ring nut 6 has a threaded seat 9 suitable for receiving the part of the outer cylindrical body 1 which projects outside of the closing cover 5 of the fire extinguisher.
  • the ring nut 6 is provided with a further threaded seat 10 which is placed opposite the threaded seat 9 and inside which a cable-gripping terminal or connector 11 is inserted.
  • the device according to the invention therefore forms an independent modular component which may be removed from the fire extinguisher by unscrewing the ring nut 6 from the outer cylindrical body 1 which remains instead in position, fixed to the cover 5 by fixing means (not shown) such as a double flange, nut and lock nut and the like, so as to form a guide for the inner cylindrical body 2 for correct positioning of the igniter 3 inside the seat provided in the solid substance through the mass of inert material which fills the fire extinguisher.
  • fixing means such as a double flange, nut and lock nut and the like
  • the closing cover 5 of the fire extinguisher and the outer cylinder 1 are made such they form one piece.
  • the igniter 3 comprises electrical connections 4 and a head 3' which is connected to a cylindrical body 3" shaped so as to slide inside the inner cylinder 2 as far as its end, so as to allow the head 3' to project outside of the double cylindrical body so as to be correctly positioned with respect to the solid substance to be ignited.
  • the igniter 3 may be easily replaced inside the inner cylinder 2 for the required maintenance, without having to remove the fire extinguisher from its position and without having to return the extinguisher to the maintenance company, with the result that the periodic replacement of the ignition means is particularly easy, rapid and inexpensive.
  • the advantage in terms of practicality of the ignition device for fire extinguishers according to the present invention is evident, since it is possible to perform replacement of the igniter without having to remove the entire extinguisher, with an obvious reduction in the amount of time required and transportation costs. In this case the extinguisher system will be restored to its operative condition quickly and the protection maintained so as to guarantee safety.
  • connections between the cylindrical inner body 2 and the ring nut 6 as well as between the outer cylindrical body 1, the cover 5 and the ring nut 6 are performed by way of example using threading, but any other known type of connection, e.g. a bayonet, groove-type or similar connection, is possible.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Air Bags (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP09180086A 2008-12-30 2009-12-21 Dispositif d'allumage pour extincteurs Withdrawn EP2204220A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM2008A000700A IT1392543B1 (it) 2008-12-30 2008-12-30 Dispositivo accenditore per apparati estinguenti

Publications (1)

Publication Number Publication Date
EP2204220A1 true EP2204220A1 (fr) 2010-07-07

Family

ID=41009849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09180086A Withdrawn EP2204220A1 (fr) 2008-12-30 2009-12-21 Dispositif d'allumage pour extincteurs

Country Status (2)

Country Link
EP (1) EP2204220A1 (fr)
IT (1) IT1392543B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120244481A1 (en) * 2009-11-20 2012-09-27 Shaanxi J & R Fire Fighting Co., Ltd bidirectional jet flame igniter for aerosol fire suppression apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354100A (en) * 1920-05-20 1920-09-28 Atlas Powder Co Electric detonator
FR1246888A (fr) * 1959-10-15 1960-11-25 Rey Freres Ets Détonateur électrique
FR1329716A (fr) * 1962-05-04 1963-06-14 M Le Ministre Des Armees Direc Inflammateur électrique avec appoint de poudre
DE3139181A1 (de) * 1980-04-05 1983-04-21 Friedrich Wilhelm Dipl.-Kfm. 4600 Dortmund Sobbe Druckgasgenerator mit einem elektrischen zuender
DE4419098A1 (de) * 1994-06-01 1995-12-07 Dynamit Nobel Ag Feuerlöschgenerator mit einem Gehäuse
WO2007040560A2 (fr) 2005-09-23 2007-04-12 Fireaway Llc Extincteur aerosol a main
DE102006058446A1 (de) * 2006-12-10 2008-07-24 Daniel Schwartz Vorrichtung und ein Verfahren zum Löschen von Bränden, insbesondere von Waldbränden

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354100A (en) * 1920-05-20 1920-09-28 Atlas Powder Co Electric detonator
FR1246888A (fr) * 1959-10-15 1960-11-25 Rey Freres Ets Détonateur électrique
FR1329716A (fr) * 1962-05-04 1963-06-14 M Le Ministre Des Armees Direc Inflammateur électrique avec appoint de poudre
DE3139181A1 (de) * 1980-04-05 1983-04-21 Friedrich Wilhelm Dipl.-Kfm. 4600 Dortmund Sobbe Druckgasgenerator mit einem elektrischen zuender
DE4419098A1 (de) * 1994-06-01 1995-12-07 Dynamit Nobel Ag Feuerlöschgenerator mit einem Gehäuse
WO2007040560A2 (fr) 2005-09-23 2007-04-12 Fireaway Llc Extincteur aerosol a main
DE102006058446A1 (de) * 2006-12-10 2008-07-24 Daniel Schwartz Vorrichtung und ein Verfahren zum Löschen von Bränden, insbesondere von Waldbränden

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120244481A1 (en) * 2009-11-20 2012-09-27 Shaanxi J & R Fire Fighting Co., Ltd bidirectional jet flame igniter for aerosol fire suppression apparatus

Also Published As

Publication number Publication date
IT1392543B1 (it) 2012-03-09
ITRM20080700A1 (it) 2010-06-30

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