EP0170234B1 - Système extincteur à mousse - Google Patents

Système extincteur à mousse Download PDF

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Publication number
EP0170234B1
EP0170234B1 EP85109464A EP85109464A EP0170234B1 EP 0170234 B1 EP0170234 B1 EP 0170234B1 EP 85109464 A EP85109464 A EP 85109464A EP 85109464 A EP85109464 A EP 85109464A EP 0170234 B1 EP0170234 B1 EP 0170234B1
Authority
EP
European Patent Office
Prior art keywords
foam
gas
nozzles
nozzle
deflector
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.)
Expired - Lifetime
Application number
EP85109464A
Other languages
German (de)
English (en)
Other versions
EP0170234A3 (en
EP0170234A2 (fr
Inventor
Jun C/O Nohmi Bosai Kogyo Co. Ltd. Uchiyama
Yasuhiro C/O Nohmi Bosai Kogyo Co. Ltd. Iwata
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo Co Ltd
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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Priority to AT85109464T priority Critical patent/ATE58300T1/de
Publication of EP0170234A2 publication Critical patent/EP0170234A2/fr
Publication of EP0170234A3 publication Critical patent/EP0170234A3/de
Application granted granted Critical
Publication of EP0170234B1 publication Critical patent/EP0170234B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
    • B05B7/0031—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0037—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • 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 present invention relates to a foam extinguishing system according to the preamble of claim 1.
  • a foam extinguishing system that generates a foam that contains non-combustible gases, for example halogen-containing gases, in particular halogenated hydrocarbons.
  • gases can themselves be extinguishing agents, i.e. up to temperatures of around 500 ° C they are inert gases. Above this temperature they decompose and act as extinguishing agents.
  • foam extinguishing systems of this type include, as shown in FIG. 1 of the drawings, foam nozzles 3 of the suction type in the rear part of a tube 1, which has a foam generation network 2 on the front and a gas nozzle for ejecting a gas mixture (also liquid gas; a halogen-containing one) in the rear region Gas, carbon dioxide or similar).
  • a gas mixture also liquid gas; a halogen-containing one
  • an extinguishing foam which contains a non-combustible gas is produced by blowing out a foam solution and a mixture of a non-combustible gas from the foam nozzles 3 or the gas-blowing nozzles 7.
  • the gas concentration contained in the foam produced varies within a wide range, so that due to the turbulence of the blow-out flow of the foam solution F caused by the blow-out pressure of the non-combustible gas mixture or due to the clogging of the spray nozzle, an optimal blow-out structure of the foam solution F cannot be obtained. In addition, the question of freezing the foam solution remains in some cases.
  • the object of the invention is to eliminate the disadvantages of the known foam extinguishing systems and, in particular, to create a foam extinguishing system which enables uniform extinguishing foam formation without the risk of freezing the extinguishing foam on the foam generation network and which at the same time enables a short construction of the foam generation tube without additional heating of the foam generating device is required.
  • the device for producing extinguishing foam consists of a tube of circular or rectangular, preferably square, cross-section, on the front of which a foam generation network is attached and in the rear part of which a gas nozzle is provided, a deflection surface being arranged in front of the gas nozzle is to distribute the jet of non-combustible liquid gas emerging from the outlet opening of the gas nozzle sideways.
  • the gas nozzle provided with a deflection surface is in such a position that the gas distributed by the deflection surface does not disturb the blow-out structure of the foam solution blown out of the foam nozzles and that the non-combustible liquid gas or the mixture of the non-combustible gases is propelled by an air flow generated in the tube.
  • the foam extinguishing system according to the invention which has the construction described above, i.e. in which a gas nozzle, which has a deflection surface located in front of the gas outlet opening, is arranged in the rear part of the extinguishing foam generation tube in such a way that a non-combustible gas mixture or a non-combustible liquid gas, such as, for example, a halogen-containing gas, preferably a halogenated hydrocarbon, the or that is blown out of the gas blowing nozzle, ie is blown towards the front of the tube works so that the gas jet is distributed from the deflecting surface and deflected backwards, i.e. sideways from the rear part of the tube and that the gas jet, which has lost a considerable part of its kinetic energy due to the distribution and deflection, is reversed and driven forward by the air flow generated in the tube.
  • a non-combustible gas mixture or a non-combustible liquid gas such as, for example
  • An advantage of the foam extinguishing system according to the invention is that it is possible by means of a simple construction, without the need for a heating device, to vaporize and disperse the non-combustible liquid gas in the air stream and to obtain a highly expanded extinguishing foam which has the required amount contains non-combustible gas without interfering with foam generation.
  • FIGS. 2 and 3 1 means a square tube in the front part of which a foam generation network 2 is arranged.
  • a foam generation network 2 In the rear part of the tube 1, four suction-type foam nozzles 3 are arranged, the outlet openings of which are directed against the foam generation network 2.
  • the gas nozzle 4 is located approximately in the center of the four foam nozzles 3
  • the foam solution is supplied from a foam concentrate tank (not shown) and a water supply (not shown) via a mixer through a foam solution supply pipe 5.
  • the non-combustible gas or solvent is supplied from a cylinder (not shown) via a gas supply pipe 6.
  • foam solution or a halogen-containing gas mixture is supplied to the foam nozzles 3 through foam solution supply pipes 5 and the gas nozzle 4 through the gas supply pipe 6 under pressure.
  • the foam solution supplied is evenly distributed by the foam nozzles over the foam generation network 2, and as a result of the vacuum created by the spraying, air is sucked in from the rear part of the tube 1, so that an air flow takes place inside the tube 1 in the direction of the foam generation network 2, as it is shown at A in FIG.
  • the mixture of the halogen-containing gas is blown out of the blow-out opening 42 of the gas nozzle 4 in the direction of the foam generation network 2.
  • the halogen-containing gas mixture strikes the deflection surface 41 located in front of the blow-out opening 42, is deflected sideways by the rear part of the tube 1 and distributed, as shown at G in FIG. 2, whereby it is divided into fine particles.
  • the halogen-containing gas mixture deflected in this way, or the halogenated liquefied gas, has a considerably reduced kinetic energy due to the deflection and dispersion by the deflection surface 41 and is driven forward by the air flow A, which is generated in the tube 1, in the direction of the foam generation network 2 .
  • the halogen-containing mixture deflected and dispersed by the deflecting surface 41 is propelled by the air stream A, can travel a great distance and is suspended in the air stream for a time before it meets the foam solution blown out by the foam nozzles 3, as at F in FIG 2 is shown.
  • the halogen-containing mixture therefore vaporizes before it meets the foam solution at F and is dispersed in the gaseous state in the air stream A.
  • the foam solution is evenly distributed by the air stream containing halogen-containing gas over the foam generation network 2 and generates a foam which contains the halogenated gas in the required amount.
  • FIG. 5 shows an embodiment with an arrangement of the foam nozzles 3 that differs somewhat from the embodiment described above in relation to the gas nozzle 4.
  • the gas nozzle 4 interferes with the blow-out structure the foam solution because the deflected and sprayed halogen-containing mixture is essentially not blown directly into the blown-out foam solution F.
  • the halogen-containing gas mixture G blown out of the gas nozzle 4 and then deflected and sprayed backwards by the deflecting surface 41 is driven forward and evaporated by the air stream A before it meets the foam solution F blown out by the foam nozzles 3, so that it is free distributed and mixed with the air stream A.
  • the gas nozzle 4 should be arranged such that the halogen-containing gas mixture G deflected and sprayed by the deflection surface 41 does not interfere with the discharge structure of the foam solution blown out of the foam nozzles 3.
  • the gases to be contained in the foam produced are inert gases such as e.g. Carbon dioxide, in question, as well as the usual other extinguishing gases, like all types of halons.
  • the deflecting surface 41 for the gas nozzle 4 does not necessarily have to be integrated into the blow-out opening part 42 of the gas nozzle 4.
  • An advantage of the foam extinguishing system according to the invention is that simply by arranging a gas nozzle 4 with a deflecting surface 41 which deflects and sprays the escaping liquid gas stream in the foam generating tube 1, the non-combustible liquid gas (or the extinguishing agent) is long Traveled and has a long dispersion time before it meets the foam solution blown out of the foam nozzles 3; this eliminates the need for a heating device without having to increase the length of the pipe.
  • the foam extinguishing system according to the invention enables the generation of a highly expanded foam without disturbing the foam formation. There is also no risk of the gas nozzle becoming blocked.

Landscapes

  • 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)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Nozzles (AREA)

Claims (3)

1. Dispositif de production de mousse extinctrice comprenant un tube de production de mousse (1), à à la partie avant duquel est montée une grille de production de mousse (2) et à la partie arrière duquel sont montées des buses à mousse (3) et une buse à gaz, de façon que les directions d'éjection de la buse à gaz et des buses à mousse (3) soient dirigées sur la grille de production de mousse, caractérisé en ce que devant la buse à gaz (4) est montée une surface déflectrice (41), qui dévie vers le côté et/ou vers l'arrière le gaz ou le mélange gazeux non combustible éjecté par la buse à gaz et le pulvérise, de manière que le gaz ou le mélange gazeux dévié par la surface déflectrice (41) et pulvérisé ne perturbe pas 1 structure d'éjection de la solution de mousse éjectée par les buses à mousse, et que le courant d'air produit dans le tube de production de mousse extinctrice (1), refoule vers l'avant le gaz ou le mélange gazeux non combustible sur une distance si grande ou pendant une durée si longue que le gaz ou le mélange gazeux éjecté prenne suffisamment de chaleur au milieu qui l'entoure pour empêcher la mousse de geler.
2. Dispositif suivant la revendication 1, caractérisé en ce que la buse à gaz (4) se trouve, avec la surface déflectrice (41), en avant des buses à mousse (3).
3. Dispositif suivant l'une des revendications 1 ou 2, caractérisé en ce que la buse à gaz (4) forme, avec la surface déflectrice (41), une unité de construction.
EP85109464A 1984-07-30 1985-07-27 Système extincteur à mousse Expired - Lifetime EP0170234B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109464T ATE58300T1 (de) 1984-07-30 1985-07-27 Schaumloeschsystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15733984A JPS6137176A (ja) 1984-07-30 1984-07-30 泡消火装置
JP157339/84 1984-07-30

Publications (3)

Publication Number Publication Date
EP0170234A2 EP0170234A2 (fr) 1986-02-05
EP0170234A3 EP0170234A3 (en) 1987-09-09
EP0170234B1 true EP0170234B1 (fr) 1990-11-14

Family

ID=15647524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109464A Expired - Lifetime EP0170234B1 (fr) 1984-07-30 1985-07-27 Système extincteur à mousse

Country Status (4)

Country Link
US (1) US4662454A (fr)
EP (1) EP0170234B1 (fr)
JP (1) JPS6137176A (fr)
AT (1) ATE58300T1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014477A1 (fr) * 1990-03-19 1991-10-03 Rogers, Allen, William Systeme de generation de mousse pour lutte anti-feu
JP2783475B2 (ja) * 1991-12-17 1998-08-06 住友金属鉱山株式会社 パルスフィルタスラッジサンプリング装置
EP0608140A3 (en) * 1993-01-22 1995-12-13 Cca Inc Mechanical foam fire fighting equipment and method.
US5377765A (en) * 1993-02-22 1995-01-03 Valkyrie Scientific Proprietary, L.C. Method and means for extinguishing tank fires
DE10010141C1 (de) * 2000-03-03 2001-10-04 Ulrich Braun Mischkammer zur Erzeugung von Druckluftschaum für Löschanlagen
US20060022358A1 (en) * 2004-07-30 2006-02-02 Cho Yong M Distributed bubble generating system
US8322633B2 (en) * 2006-02-09 2012-12-04 Tyco Fire Products Lp Expansion nozzle assembly to produce inert gas bubbles
JP5095178B2 (ja) * 2006-11-10 2012-12-12 能美防災株式会社 高膨張泡消火設備及びその発泡方法
JP4808601B2 (ja) * 2006-11-30 2011-11-02 能美防災株式会社 高膨張泡消火設備
JP4805111B2 (ja) * 2006-11-30 2011-11-02 能美防災株式会社 高膨張泡消火設備
KR101367487B1 (ko) * 2006-11-30 2014-02-25 노미 보사이 가부시키가이샤 고팽창포 소화 설비
KR101510482B1 (ko) * 2008-03-07 2015-04-08 노미 보사이 가부시키가이샤 고팽창포 소화 설비
EP3527493B1 (fr) 2012-01-27 2020-08-26 Simplex Manufacturing Co. Système d'extinction d'incendie aérien
AU2014405666B2 (en) * 2014-09-05 2019-05-16 Daeyang Rollent Co., Ltd. Conveyor roller having spray function
US10406390B2 (en) 2016-08-09 2019-09-10 Simplex Manufacturing Co. Aerial fire suppression system

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Publication number Priority date Publication date Assignee Title
US508130A (en) * 1893-11-07 prank w
US1727111A (en) * 1924-12-15 1929-09-03 Bethlehem Shipbuilding Corp Method and apparatus for extinguishing fires
DE920226C (de) * 1950-11-04 1954-11-15 Phillips & Pain Luftschaumerzeuger fuer Feuerloeschzwecke
NL285531A (fr) * 1961-11-15
US3342271A (en) * 1965-03-23 1967-09-19 Specialties Dev Corp Foam plug generator
US3368629A (en) * 1965-08-12 1968-02-13 Specialties Dev Corp Protective closure for fire-fighting foam generator
DE1559653B1 (de) * 1965-10-13 1970-01-02 Minimax Ag Vorrichtung zur Erzeugung hochverschaeumten physikalischen Feuerloeschschaums
DE1559679C3 (de) * 1966-02-28 1975-07-10 Enka Glanzstoff Ag, 5600 Wuppertal Leichtschaumlöschverfahren mit Kohlendioxydzusatz und Vorrichtung zur Durchführung des Verfahrens
US3780812A (en) * 1971-07-06 1973-12-25 M Lambert Method and apparatus for generating fire-fighting foam
GB2102936B (en) * 1981-07-28 1985-02-13 Rolls Royce Fuel injector for gas turbine engines

Non-Patent Citations (1)

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Title
JP-UM-52-154885 (Veröff. Nr.54-159) *

Also Published As

Publication number Publication date
JPH0439338B2 (fr) 1992-06-29
JPS6137176A (ja) 1986-02-22
EP0170234A3 (en) 1987-09-09
US4662454A (en) 1987-05-05
EP0170234A2 (fr) 1986-02-05
ATE58300T1 (de) 1990-11-15

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