EP1151800A2 - Buse silencieuse pour projeter un gaz d'extinction - Google Patents

Buse silencieuse pour projeter un gaz d'extinction Download PDF

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Publication number
EP1151800A2
EP1151800A2 EP00126770A EP00126770A EP1151800A2 EP 1151800 A2 EP1151800 A2 EP 1151800A2 EP 00126770 A EP00126770 A EP 00126770A EP 00126770 A EP00126770 A EP 00126770A EP 1151800 A2 EP1151800 A2 EP 1151800A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
extinguishing gas
hole
gas
filter assembly
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Withdrawn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
EP00126770A
Other languages
German (de)
English (en)
Other versions
EP1151800A3 (fr
Inventor
Giancarlo Bianchi
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.)
GASTEC-VESTA S.R.L.
Original Assignee
VESTA 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 VESTA Srl filed Critical VESTA Srl
Publication of EP1151800A2 publication Critical patent/EP1151800A2/fr
Publication of EP1151800A3 publication Critical patent/EP1151800A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/002—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to reduce the generation or the transmission of noise or to produce a particular sound; associated with noise monitoring means
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
    • 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
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases

Definitions

  • the present invention refers to a silenced nozzle for the discharge of extinguishing gases, particularly suitable for application to fire fighting systems that work with a gaseous-type extinguishing fluid.
  • Fire extinguishing systems that use a gaseous fluid as the extinguishing fluid are known to the art. By means of dispensing nozzles this gaseous fluid is delivered at high pressure onto the flames to inhibit them.
  • the maximum recommended threshold for noise measured in a working environment is 90 dB.
  • a discharge of gas from the nozzles of the fire extinguishing system may occur erroneously; as a result all the operators are obliged to abandon the workplace because of the unbearable noise produced by said nozzles.
  • the noise that occurs during discharge of gas from the dispensing nozzle is due to various factors, such as the times of discharge of the extinguishing gas, fluctuation of the air during discharge and phenomena of overpressure caused by discharge of gas in the area protected by the fire extinguishing system.
  • the time of discharge into the area protected by the fire extinguishing system must be kept within 10 seconds for chemical gases and within 60 seconds for inert gases.
  • nozzles according to the prior art have a particular shape.
  • Figure 5 shows a nozzle according to the prior art which is indicated as a whole with reference numeral 100.
  • the nozzle 100 is formed by a single body, of metallic material, substantially cylindrical in shape.
  • the nozzle 100 has an upper part 101 that continues with a tapering intermediate part 103 that ends in a lower cylindrical part 104 having a smaller diameter than the upper part 101.
  • a circular hole 102 is provided, disposed axially, for entry of the extinguishing gas.
  • the diameter of the hole 102 is about 30 mm.
  • the axial hole 102 then narrows in the intermediate part 103 and takes on a diameter of about 24 mm in the lower part 104.
  • Radial gas outlet holes 105 are formed in the tapering intermediate part 103 and in the lower cylindrical part 104.
  • the holes 105 have diameters that can range from 2 to 15 mm, preferably being 5 mm, and can be positioned on the lateral surface of the nozzle along an arc of a circumference that ranges from 90° to 360°. As shown in Figure 5, the nozzle 100 has fifteen outlet holes 105 for the extinguishing gas.
  • the extinguishing gas On entering the hole 102 the extinguishing gas encounters an entry area of 706 mm 2 .
  • the gas propagates into the intermediate part 103 and into the lower part 104, it encounters a smaller area with respect to the entry area.
  • the narrowing in section of air encountered by the gas as it propagates into the nozzle 100 causes a pressure increase in the gas and consequently a high noise level during discharge of the gas through the holes 105.
  • said known configuration of the nozzle 100 offers a reduced surface for formation of the gas outlet holes 105. This causes a further increase in the pressure of the gas and a decrease in the efficiency of the nozzle.
  • the object of the invention is to eliminate the drawbacks of the prior art, providing a nozzle for discharge of extinguishing gases that produces low noise and in particular is able to maintain the noise level below 90 dB during discharge.
  • Another object of the present invention is to provide a nozzle for discharge of extinguishing gases that is extremely safe and easy to make.
  • the nozzle for discharge of extinguishing gases has a metallic body formed by a base and a cover which enclose at least one sintered filter.
  • Said sintered filter has a high filtration field to be able to appreciably attenuate the air fluctuation caused by discharge of the extinguishing gas and thus considerably decrease the noisiness of the nozzle.
  • the nozzle according to the invention further provides inside it a gas propagation area that is greater than the gas inlet area, to attenuate the pressure of the gas during discharge.
  • the particular structure of the nozzle according to the invention further provides the possibility of having a surface available for formation of the outlet holes for the extinguishing gas that is substantially greater than in nozzles of the prior art. Furthermore, the gas outlet holes can be disposed both on the lower surface and on the upper surface of the nozzle according to the invention.
  • part of the lateral surface of the sintered filter, contained between the base and the cover of the nozzle, is left uncovered so as to create a further outlet for the extinguishing gases.
  • a silenced nozzle for discharge of extinguishing gases according to the invention denoted as a whole by reference numeral 1, is described with the aid of Figures 1-4.
  • the nozzle 1 consists essentially of three elements: a base body 2, a cover 3 and an assembly of sintered filters 4 comprised between the base body 2 and the cover 3.
  • the base body 2 and the cover 3 can equally well be made from materials such as aluminium, brass or stainless steel.
  • the cover 3 consists of a cylindrical tang 5 with a diameter of about 83 mm terminating in a circular flange 6 with a diameter of about 100 mm.
  • An axial hole 7 is formed in the upper surface of the cylindrical tang 5 for entry of the extinguishing gas.
  • the hole 7 has a diameter of about 30 mm which is a standard size for attachment to extinguishing gas dispensers.
  • An axial hole 8 for propagation of the gas having a slightly smaller diameter than the outer diameter of the cylindrical tang 5, is formed in the lower surface of the flange 6. In this manner the hole 8 can continue inside the cylindrical tang 5 and be in communication with the hole 7 which occupies only an upper part of the tang 5.
  • the diameter of the hole 8 is in any case substantially greater than the diameter of the hole 7 for entry of the extinguishing gas.
  • Holes 9 are formed in the upper surface of the tang 5 for outlet of the gas.
  • the holes 9 are disposed circumferentially around the gas inlet hole 7 and communicate with the hole 8 for propagation of the gas.
  • eight holes 9 can be disposed on a circumference and spaced at 45° to one another.
  • the diameter of each hole can preferably be about 5 mm.
  • the holes 10 are formed in the peripheral part of the flange 6 to receive respective tightening bolts 11.
  • the holes 10 are preferably spaced at 90°.
  • the base body 2 consists of a cylindrical plate with a diameter of about 100 mm, substantially equal to the diameter of the flange 6 of the cover 3.
  • a circular seat 20 having a diameter substantially equal to the diameter of the hole 8 of the cover 3 is formed in the upper surface of the base body 2.
  • a plurality of holes 21 (in the example shown seventeen holes with a diameter of about 5 mm) for outlet of the extinguishing gas, communicating with the circular seat 20, are formed in the lower surface of the basic body 2.
  • the filter assembly 4 provides two sintered filters 31 and 32, made with zinc-coated metal wires suitably pressed in special moulds so as to obtain disk-shaped filter bodies, with a diameter equal to or slightly smaller than the diameter of the hole 8 of the cover 3.
  • the filters 31 and 32 are subjected to diffusion heat treatment, so as to be able to achieve a high mechanical resistance which guarantees a long life even when used at high pressures and high temperatures (about 500 °C).
  • the filters 31 and 32 furthermore have a very high filtering field (10-50 microns) in this case to ensure that the noisiness due to the fluctuation of air caused by discharge of extinguishing gas can be considerably attenuated.
  • a metal baffle is provided between the two filters 31 and 32 to deflect the flow of extinguishing gas.
  • the filter assembly 4 comprising the sintered filters 31 and 32 with the baffle 33 interposed, is housed inside the hole 8 of the cover and the bottom end of the filter 31 is housed in the seat 20 of the base body.
  • the bolts 11 engage in the respective holes 10 and 22 and are tightened by means of nuts 25 which are screwed to the end of the shank of each bolt 11 which protrudes downward from the base body 2.
  • the height of the filter assembly 4 is designed so that there is a height of at least 20 mm between the lower surface 6 of the flange and upper surface of the base body 2, thus the lateral surface of the filter assembly 4 remains uncovered for a about 20 mm.
  • the height of the base body 2 and of the cover 3 is designed so that the total height of the assembled nozzle is about 100 mm.
  • the nozzle 1 can be mounted on a an extinguishing gas dispenser of a fire extinguishing system.
  • the extinguishing gas leaving the dispenser enters the nozzle 1 through the inlet hole 7, propagates into the hole 8 passing through the filter assembly 4 and exits upward through the outlet holes 9 in the upper surface of the nozzle 1, downward through the outlet holes 21 in the bottom surface of the nozzle and sideward from the lateral surface of the filter assembly 4 which remains uncovered.
  • the gas enters the inlet hole 7 which has a sectional area of about 706 mm and is propagated into the hole 8 which has a substantially larger sectional area. This attenuates the pressure of the gas and thus the noise during discharge of gas.
  • the particular structure of the nozzle 1 according to the invention provides a larger surface for the formation of gas outlet holes, compared with prior art nozzles.
  • the nozzle according to the invention there can be seventeen holes in the lower surface and eight holes in the upper surface, for a total of twenty-five holes.
  • the gas has a further outlet area represented by the lateral surface of the filter assembly 4 which remains uncovered.
  • the nozzle 200 comprises a base body 202, a cover 203 and a filter assembly 4 substantially identical to that described in the first embodiment.
  • the cover 203 comprises a hollow cylindrical body 205 inside which is situated a seat or chamber 208 to contain the filter assembly 4.
  • the cylindrical body has rectangular slots 230 communicating with the inner chamber 208.
  • Four slots 230 are preferably provided so as to form four columns 231 (three visible in Figure 6) that connect the upper part of the cylindrical body 205 to the lower part thereof.
  • the cylindrical body 205 can be produced by fusion connecting an upper cylinder to a lower cylinder by means of the columns 231.
  • a glass-shaped mouth 233 that has seat 234 open toward the outside to receive the gas dispensing line is provided on the upper surface of the cylindrical body 205.
  • the seat 234 has an aperture 207 communicating with the chamber 208.
  • a plurality of axial holes 9 communicating with the chamber 208 is formed in the upper surface of the cylindrical body 205, on the outside with respect to the mouth 233. As in the first embodiment the holes 9 can be eight in number.
  • the cylindrical body 205 has an inner thread 240 destined to engage with a respective outer thread 241 provided in the base body 202.
  • the base body 202 is a cylindrical plate that has a plurality of axial holes 21, for example seventeen as in the first embodiment.
  • the filter assembly 4 it is sufficient to insert the filter assembly 4 in the chamber 208 of the cover 203 and screw the base body 202 into the bottom end of the cover 203.
  • the gas dispensing line is housed in the seat 234 of the mouth 233, therefore the gas delivered, through the aperture 207 expands in the chamber 208 and the fluctuation of the air is attenuated by the filters 4.
  • the extinguishing gas is discharged upward from the holes 9, sideward from the slots 230 and downward from the holes 21.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
EP00126770A 2000-05-05 2000-12-06 Buse silencieuse pour projeter un gaz d'extinction Withdrawn EP1151800A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000MI000989A IT1317475B1 (it) 2000-05-05 2000-05-05 Ugello silenziato per la scarica di gas estinguenti.
ITMI000989 2000-05-05

Publications (2)

Publication Number Publication Date
EP1151800A2 true EP1151800A2 (fr) 2001-11-07
EP1151800A3 EP1151800A3 (fr) 2002-09-11

Family

ID=11444982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126770A Withdrawn EP1151800A3 (fr) 2000-05-05 2000-12-06 Buse silencieuse pour projeter un gaz d'extinction

Country Status (3)

Country Link
EP (1) EP1151800A3 (fr)
IT (1) IT1317475B1 (fr)
ZA (1) ZA200103341B (fr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001033983A (ja) * 1999-07-15 2001-02-09 Mitsubishi Electric Corp パターン形成方法およびこれを用いた半導体装置の製造方法、並びに半導体装置
GB2405666A (en) * 2003-09-05 2005-03-09 Dunlop Aerospace Ltd Noise attenuator, eg for turbofan engine air bleed system
JP2011125673A (ja) * 2009-11-02 2011-06-30 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
US20120205128A1 (en) * 2009-10-23 2012-08-16 Air Water Safety Service Inc. Gas fire-extinguishing apparatus
WO2012154652A1 (fr) * 2011-05-12 2012-11-15 Fike Corporation Buse de système de suppression de gaz inerte
JP2013000195A (ja) * 2011-06-13 2013-01-07 Air Water Safety Service Inc ノズル構造体
WO2012136468A3 (fr) * 2011-04-08 2013-05-16 Siemens Aktiengesellschaft Buses d'extinction insonorisées
JP2013150820A (ja) * 2009-10-23 2013-08-08 Air Water Safety Service Inc ガス消火設備
WO2013125383A1 (fr) * 2012-02-21 2013-08-29 株式会社コーアツ Tête de pulvérisation pour système d'extinction d'incendie à gaz ayant une fonction d'atténuation du bruit
JP2013169333A (ja) * 2012-02-21 2013-09-02 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
JP2013169472A (ja) * 2013-04-17 2013-09-02 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
JP2013192764A (ja) * 2012-03-21 2013-09-30 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
WO2017096249A1 (fr) * 2015-12-04 2017-06-08 Tyco Fire Products Lp Buse de suppresseur acoustique à faible chute de pression destinée à un système d'évacuation de gaz inerte de protection contre les incendies
WO2017096261A1 (fr) * 2015-12-04 2017-06-08 Tyco Fire Products Lp Buse de suppresseur acoustique à faible chute de pression destinée à un système d'évacuation de gaz inerte
EP3195905A1 (fr) * 2016-01-22 2017-07-26 Extinctium Buse silencieuse de diffusion de gaz
JP2017221683A (ja) * 2013-10-02 2017-12-21 エア・ウォーター防災株式会社 消火ガス噴射装置の施工方法
JP2018057724A (ja) * 2016-10-07 2018-04-12 ニッタン株式会社 ガス消火設備用ガス放出ノズル
WO2018123656A1 (fr) * 2016-12-26 2018-07-05 株式会社コーアツ Tête de jet dotée d'une fonction de silencieux pour équipement d'extinction d'incendie à base de gaz, son procédé de stockage et d'assemblage
WO2018212160A1 (fr) * 2017-05-19 2018-11-22 株式会社コーアツ Tête de pulvérisation pour agent d'extinction d'incendie liquéfié
WO2019141819A1 (fr) 2018-01-21 2019-07-25 Luxembourg Patent Company S.A. Tête silencieuse pour évacuation de gaz d'extinction d'incendie
WO2020028731A1 (fr) * 2018-08-02 2020-02-06 Carrier Corporation Ensemble buse à faible bruit pour système de suppression d'incendie
WO2020071329A1 (fr) * 2018-10-02 2020-04-09 株式会社コーアツ Tête de pulvérisation pour agent d'extinction d'incendie liquéfié
US11117007B2 (en) 2017-11-10 2021-09-14 Carrier Corporation Noise reducing fire suppression nozzles
RU2786611C2 (ru) * 2018-10-02 2022-12-22 Коацу Ко., Лтд. Распылительная головка для жидкого огнетушащего вещества

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345878A (en) * 1964-12-02 1967-10-10 James N Grant Card assembly sampler
US3811622A (en) * 1972-11-06 1974-05-21 L Blatt Air blow gun for chip and debris cleaning
US3960239A (en) * 1973-08-15 1976-06-01 Barry Wright Corporation Noise-reducing fluid-flow devices
US3973642A (en) * 1974-04-05 1976-08-10 Sunne Gummifabrik Ab Noise-reducing blowing nozzle
US5197548A (en) * 1991-01-22 1993-03-30 Messer Griesheim Gmbh Fire extinguishing device with storage tank for a low-boiling liquefied gas which serves as extinguishing agent
EP0700693A1 (fr) * 1994-09-09 1996-03-13 Nagtglas Versteeg B.V. Procédé pour éteindre un incendie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345878A (en) * 1964-12-02 1967-10-10 James N Grant Card assembly sampler
US3811622A (en) * 1972-11-06 1974-05-21 L Blatt Air blow gun for chip and debris cleaning
US3960239A (en) * 1973-08-15 1976-06-01 Barry Wright Corporation Noise-reducing fluid-flow devices
US3973642A (en) * 1974-04-05 1976-08-10 Sunne Gummifabrik Ab Noise-reducing blowing nozzle
US5197548A (en) * 1991-01-22 1993-03-30 Messer Griesheim Gmbh Fire extinguishing device with storage tank for a low-boiling liquefied gas which serves as extinguishing agent
EP0700693A1 (fr) * 1994-09-09 1996-03-13 Nagtglas Versteeg B.V. Procédé pour éteindre un incendie

Cited By (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001033983A (ja) * 1999-07-15 2001-02-09 Mitsubishi Electric Corp パターン形成方法およびこれを用いた半導体装置の製造方法、並びに半導体装置
GB2405666A (en) * 2003-09-05 2005-03-09 Dunlop Aerospace Ltd Noise attenuator, eg for turbofan engine air bleed system
JP2017104560A (ja) * 2009-10-23 2017-06-15 エア・ウォーター防災株式会社 ガス消火設備
JP2015142854A (ja) * 2009-10-23 2015-08-06 エア・ウォーター防災株式会社 ガス消火設備
EP2491984A4 (fr) * 2009-10-23 2015-10-07 Air Water Safety Service Inc Dispositif d'extinction d'incendie au moyen d'un gaz
JP2022145844A (ja) * 2009-10-23 2022-10-04 エア・ウォーター防災株式会社 ガス消火設備
JP7344240B2 (ja) 2009-10-23 2023-09-13 エア・ウォーター防災株式会社 消音装置およびガス消火設備
JP2013150820A (ja) * 2009-10-23 2013-08-08 Air Water Safety Service Inc ガス消火設備
EP3243552A3 (fr) * 2009-10-23 2018-02-21 Air Water Safety Service Inc. Dispositif d'extinction d'incendie au moyen d'un gaz
JP2018023846A (ja) * 2009-10-23 2018-02-15 エア・ウォーター防災株式会社 ガス消火設備
JP2017209524A (ja) * 2009-10-23 2017-11-30 エア・ウォーター防災株式会社 消火ガス噴射装置
JP2014097428A (ja) * 2009-10-23 2014-05-29 Air Water Safety Service Inc 消火ガス噴射装置
JP2021104350A (ja) * 2009-10-23 2021-07-26 エア・ウォーター防災株式会社 消音装置
US20120205128A1 (en) * 2009-10-23 2012-08-16 Air Water Safety Service Inc. Gas fire-extinguishing apparatus
JP2019202153A (ja) * 2009-10-23 2019-11-28 エア・ウォーター防災株式会社 消火ガス噴射装置およびそれを用いたガス消火設備ならびに消火ガス噴射装置の施工方法
JP2014128701A (ja) * 2009-10-23 2014-07-10 Air Water Safety Service Inc 消火ガス噴射装置
JP2014144383A (ja) * 2009-10-23 2014-08-14 Air Water Safety Service Inc 設備室、ガス消火方法およびガス消火設備
CN104014097A (zh) * 2009-10-23 2014-09-03 爱沃特防灾株式会社 气体灭火设备
JP2014166591A (ja) * 2009-10-23 2014-09-11 Air Water Safety Service Inc 消火ガス噴射装置
JP2014166592A (ja) * 2009-10-23 2014-09-11 Air Water Safety Service Inc 消火ガス噴射装置
US9457214B2 (en) 2009-10-23 2016-10-04 Air Water Safety Service Inc. Gas fire-extinguishing apparatus
JP2016165496A (ja) * 2009-10-23 2016-09-15 エア・ウォーター防災株式会社 消火ガス噴射装置
JP2015198974A (ja) * 2009-10-23 2015-11-12 エア・ウォーター防災株式会社 消火ガス噴射装置
JP2015192875A (ja) * 2009-10-23 2015-11-05 エア・ウォーター防災株式会社 設備室、ガス消火方法およびガス消火設備
JP2021037317A (ja) * 2009-10-23 2021-03-11 エア・ウォーター防災株式会社 噴射ヘッドおよびその噴射ヘッドの消火対象区画内での施工方法
JP2014087707A (ja) * 2009-11-02 2014-05-15 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
JP2011125673A (ja) * 2009-11-02 2011-06-30 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
JP2016174940A (ja) * 2009-11-02 2016-10-06 株式会社コーアツ ガス系消火設備用の消音機能を有する噴射ヘッド
JP2015006620A (ja) * 2009-11-02 2015-01-15 株式会社コーアツ ガス系消火設備用の消音機能を有する噴射ヘッド
JP2018008128A (ja) * 2009-11-02 2018-01-18 株式会社コーアツ ガス系消火設備用の消音機能を有する噴射ヘッド
WO2012136468A3 (fr) * 2011-04-08 2013-05-16 Siemens Aktiengesellschaft Buses d'extinction insonorisées
CN103635234A (zh) * 2011-05-12 2014-03-12 法克有限公司 惰性气体抑制系统喷嘴
WO2012154652A1 (fr) * 2011-05-12 2012-11-15 Fike Corporation Buse de système de suppression de gaz inerte
US8887820B2 (en) 2011-05-12 2014-11-18 Fike Corporation Inert gas suppression system nozzle
JP2013000195A (ja) * 2011-06-13 2013-01-07 Air Water Safety Service Inc ノズル構造体
WO2013125383A1 (fr) * 2012-02-21 2013-08-29 株式会社コーアツ Tête de pulvérisation pour système d'extinction d'incendie à gaz ayant une fonction d'atténuation du bruit
CN104159642A (zh) * 2012-02-21 2014-11-19 株式会社高压 气体类灭火设备用的具有消音功能的喷射头
EP2818207A1 (fr) * 2012-02-21 2014-12-31 Koatsu Co., Ltd. Tête de pulvérisation pour système d'extinction d'incendie à gaz ayant une fonction d'atténuation du bruit
CN104159642B (zh) * 2012-02-21 2017-10-13 株式会社高压 气体类灭火设备用的具有消音功能的喷射头
EP2818207A4 (fr) * 2012-02-21 2015-11-18 Koatsu Co Ltd Tête de pulvérisation pour système d'extinction d'incendie à gaz ayant une fonction d'atténuation du bruit
US10258816B2 (en) 2012-02-21 2019-04-16 Koatsu Co., Ltd. Injection head having silencing function for gas-type fire extinguisher
RU2579000C1 (ru) * 2012-02-21 2016-03-27 Коацу Ко., Лтд. Форсунка с функцией шумоглушения для ситстемы газового пожаротушения
JP2013169333A (ja) * 2012-02-21 2013-09-02 Koatsu Co Ltd ガス系消火設備用の消音機能を有する噴射ヘッド
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IT1317475B1 (it) 2003-07-09
ZA200103341B (en) 2001-10-26
ITMI20000989A0 (it) 2000-05-05
ITMI20000989A1 (it) 2001-11-05
EP1151800A3 (fr) 2002-09-11

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