EP1543881A2 - Verfahren und Düse zur Erzeugung eines Wassernebels - Google Patents

Verfahren und Düse zur Erzeugung eines Wassernebels Download PDF

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Publication number
EP1543881A2
EP1543881A2 EP04388089A EP04388089A EP1543881A2 EP 1543881 A2 EP1543881 A2 EP 1543881A2 EP 04388089 A EP04388089 A EP 04388089A EP 04388089 A EP04388089 A EP 04388089A EP 1543881 A2 EP1543881 A2 EP 1543881A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
mist
water
water jet
nozzles
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Withdrawn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
EP04388089A
Other languages
English (en)
French (fr)
Other versions
EP1543881A3 (de
Inventor
Carsten Palle
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.)
VID ApS
Original Assignee
VID ApS
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 VID ApS filed Critical VID ApS
Publication of EP1543881A2 publication Critical patent/EP1543881A2/de
Publication of EP1543881A3 publication Critical patent/EP1543881A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water
    • 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening

Definitions

  • the invention relates to a method of generating a water mist in particular for fire extinction by means of permanently installed nozzles as well as a nozzle for performing the method.
  • valve and nozzle arrangement is known from US 5 590 719, where the nozzle is configured as a pipe having an adjustable outlet nozzle at one end and a needle valve having a centre hole at the other end.
  • the adjustable needle valve ensures that the liquid flow through the nozzle pipe may be adjusted, which, together with the position of the outlet nozzle, makes it possible to adjust the water distribution of the nozzle and thereby the ability of the outlet nozzle to split the periphery of the liquid flow into water droplets.
  • the liquid mist from the nozzle is distributed hereby, which is expedient in connection with fire fighting by means of hoses having such a nozzle and valve arrangement.
  • the object of the invention is to provide a method of permanently installing nozzles for fire fighting, and this is achieved according to the invention by a method wherein a conical water jet is discharged from a nozzle at the same time as a mist is discharged from one or more nozzles in a direction toward the exterior of the water jet to entrain the mist with the water jet.
  • the water mist may be extended over relatively long distances, since the drops are relatively large while their velocity is supported by the velocity of the water jet.
  • the nozzles are provided in a nozzle holder, a compact and reliable structure is ensured.
  • mist nozzles it is expedient, as stated in claim 3, to allow the mist nozzles to discharge mist in a direction toward the periphery of the water jet in order to thereby utilize the ability of the water to carry the mist forwards.
  • the nozzle 2 is mounted in a vertically extending wall 1 such that a horizontal water mist may be spread from the nozzle 2.
  • Pressurized water 3 is fed to the nozzle 2 in a generally known manner and such that water is conveyed to a centrally positioned water nozzle 4 for spreading a water jet 5, which has a conical shape, as shown.
  • mist nozzles 6 are shown in the nozzle 2, positioned at an inclined angle relative to the horizontal plane such that a water mist 7 is spread from the nozzles 6 which has a direction essentially in parallel with outer rim of the water jet 5.
  • the mist 7 when contacting the exterior of the water jet 5, the mist 7 will be given a turbulent movement 8 as well as a laminar movement 8a, as indicated by arrows.
  • This pattern of movement has the advantage that the small and thereby light drops, which constitute the mist 7, will be "carried” forwards by the water jet 5 and may thereby be advanced over a relatively great distance.
  • the example shown includes two mist nozzles 6, but it is within the scope to have e.g. just an overlying mist nozzle 6 or to arrange more than two around the water nozzle 4.
  • the nozzle may hereby be dimensioned according to the mist mixture proportion, while ensuring the desired direction and distance.
  • This precise spray picture is important particularly in permanently installed mist nozzle systems.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
EP04388089A 2003-12-16 2004-12-15 Verfahren und Düse zur Erzeugung eines Wassernebels Withdrawn EP1543881A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200301860 2003-12-16
DKPA200301860 2003-12-16

Publications (2)

Publication Number Publication Date
EP1543881A2 true EP1543881A2 (de) 2005-06-22
EP1543881A3 EP1543881A3 (de) 2008-03-05

Family

ID=34485971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04388089A Withdrawn EP1543881A3 (de) 2003-12-16 2004-12-15 Verfahren und Düse zur Erzeugung eines Wassernebels

Country Status (1)

Country Link
EP (1) EP1543881A3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009068558A1 (en) * 2007-11-29 2009-06-04 Firexpress A/S A nozzle head for a fire extinguisher
CN104667466A (zh) * 2013-11-29 2015-06-03 上海金盾消防安全科技有限公司 直喷雾化喷嘴和旋流雾化喷嘴组合的细水雾喷头
CN106994219A (zh) * 2017-04-19 2017-08-01 国网湖南省电力公司 具有抗风性能的中高压细水雾喷头及其抗风性应用方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20015198U1 (de) * 2000-09-02 2000-10-26 Callies, Oliver, 64342 Seeheim-Jugenheim Brandbekämpfungseinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009068558A1 (en) * 2007-11-29 2009-06-04 Firexpress A/S A nozzle head for a fire extinguisher
CN104667466A (zh) * 2013-11-29 2015-06-03 上海金盾消防安全科技有限公司 直喷雾化喷嘴和旋流雾化喷嘴组合的细水雾喷头
CN106994219A (zh) * 2017-04-19 2017-08-01 国网湖南省电力公司 具有抗风性能的中高压细水雾喷头及其抗风性应用方法

Also Published As

Publication number Publication date
EP1543881A3 (de) 2008-03-05

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