EP0671217B1 - Sprühdüse zur Erzeugung von Sprühnebeln - Google Patents

Sprühdüse zur Erzeugung von Sprühnebeln Download PDF

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Publication number
EP0671217B1
EP0671217B1 EP94119909A EP94119909A EP0671217B1 EP 0671217 B1 EP0671217 B1 EP 0671217B1 EP 94119909 A EP94119909 A EP 94119909A EP 94119909 A EP94119909 A EP 94119909A EP 0671217 B1 EP0671217 B1 EP 0671217B1
Authority
EP
European Patent Office
Prior art keywords
spray
housing
spray nozzle
nozzle
nozzle orifice
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
EP94119909A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0671217A3 (de
EP0671217A2 (de
Inventor
Ulf Schremmer
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.)
Total Walther GmbH Feuerschutz und Sicherheit
Original Assignee
Total Walther GmbH Feuerschutz und Sicherheit
Total Feuerschutz GmbH
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 Total Walther GmbH Feuerschutz und Sicherheit, Total Feuerschutz GmbH filed Critical Total Walther GmbH Feuerschutz und Sicherheit
Publication of EP0671217A2 publication Critical patent/EP0671217A2/de
Publication of EP0671217A3 publication Critical patent/EP0671217A3/de
Application granted granted Critical
Publication of EP0671217B1 publication Critical patent/EP0671217B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber

Definitions

  • the invention relates to a spray nozzle for generating spray in Low pressure process, especially for firefighting with stationary Water mist fire extinguishing systems, the radially in a pipeline of the Fire extinguishing system built-in spray nozzle from a housing with a built-in, a swirl mixing chamber forming flow body, which with a pin-shaped end is assigned to a nozzle opening.
  • Such nozzles are used for spraying liquids the liquid distribution a uniform spray pattern, especially in Fire extinguishing systems, the aim is.
  • DD 116 398 such a Nozzle described, which consists of a hollow nozzle body and a nozzle insert with an outer Twist groove exists. These nozzles essentially spray an annulus. The area only a small amount of spray is applied within the ring. That means that when released of the water flow from the nozzle through the formation of internal vortices in the spray cone sets a hollow cone.
  • Another disadvantage with the older spray nozzle is that seen that the proposed swirl channels tend to clog and also the Swirl body causes high processing times in the manufacture.
  • the invention has for its object to provide a spray nozzle with which Disadvantages of the older spray nozzle can be avoided and with a spray cone as Full cone is generated with a more intense internal vortex formation.
  • a full cone forms with the spray nozzle according to the invention, the Spray nozzle with regard to the liquid distribution a uniform and stable spray pattern generated over a circular area.
  • the spray nozzle can be used in a spray water fire extinguishing system usual pressure range can be used.
  • the spray nozzle has one large and intensive spray effect in the horizontal and radial direction, with a good one Enclosure and deep effect. This is an application in the supply air flow and possible in the gravity application of water to the source of the fire.
  • the configuration of the spray nozzle with an outwardly directed Flow body spigot at the nozzle outlet leads to an extremely stable and clean Spray cone through additional stabilization and bundling of the water flow.
  • the constructive design of the spray nozzle according to the invention leads to a low Clogging tendency due to larger nozzle exit and entry areas.
  • a spray nozzle 1 is installed radially in a tube 2.
  • the spray nozzle 1 consists of a housing 3 with a cylindrical inner bore 10 into which a flow body 4 is installed.
  • a flow body 4 When the liquid in the pipe 2 is pressurized, e.g. Water, it flows through holes 14 in the housing 3 tangentially and radially are inclined in a swirl mixing chamber 8.
  • the flow body 4 consists of a conical part 6 and a cylindrical pin 7 with a cylindrical Nozzle opening 9 forms an annular gap 15. The from the holes 14 with a twist and turbulent water flow entering the swirl mixing chamber 8 flows around the conical part 6 of the flow body 4.
  • the flow body 4 is made in the upper part a cylindrical part 5 formed with an external thread 12, which is in an internal thread 13 of the cylindrical bore 10 of the housing 3 is screwed.
  • Flow bodies 4 arranged in installation form become through the bores 14 entering turbulent water jets with different tangential and axial speed components stabilized in the swirl mixing chamber 8 and via a conical bore 11 in the region of the smallest diameter 16 of the conical part 6 accelerates.
  • the water flow emerges from the annular gap 15 over a short distance as a bundled, twisted and pressure-increased jet. In the annular gap 15 further stabilization and concentration of the jet emerging from the nozzle causes. After this distance, a spray cone is formed in which forms a vortex zone within the spray cone jacket.
  • the droplet jet released by the nozzle is characterized by a Large drops and a fine drop portion, the fine drop portion predominating. Of the Large drop portion serves as a carrier medium for the fine drops through the training of drag vertebrae.
  • the spray cone generated with the spray nozzle 1 according to the invention is extremely stable from the operating pressure of the nozzle, even if the pre-pressure, i.e. of the Pressure in pipeline 2 fluctuates.
  • the spray angle of the exiting spray can be adjusted by adjusting the flow geometry between 60 ° and Be 140 °.
  • the formation of the annular gap 15 at the nozzle outlet avoids one Hollow cone of the spray mist and instability of the spray cone at the nozzle outlet.
  • an inward vortex formation of the spray after leaving the by the Pin 7 formed stabilization section a stable full cone is guaranteed.
  • the bores 14 are tangential at an angle ⁇ between 15 ° and 45 °, preferably 30 ° and 40 ° and radially at an angle ⁇ between 5 ° and 40 °, preferably inclined between 10 ° and 20 °.
  • the lower surface of the pin 7 can be connected to the outer edge of the nozzle opening 9 complete or protrude beyond the housing 3. With this measure it is achieved that the spray cone does not tear off at the outer edge of the nozzle opening 9.
  • the liquid film is supposed to continue be grated. This can be done in that the surfaces of the conical part 6 and the pin 7 and the surfaces of the bores 10 and 11 and the nozzle opening 9 can be roughened. Roughening can be carried out in the usual way.
  • the spray nozzle according to the invention is not only in stationary water mist fire extinguishing systems applicable. It can also be used for precipitation and washout toxic smoke and combustion gases and for binding and the suppression of dusts be used.

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)
  • Reciprocating Pumps (AREA)
EP94119909A 1994-03-09 1994-12-16 Sprühdüse zur Erzeugung von Sprühnebeln Expired - Lifetime EP0671217B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407779 1994-03-09
DE4407779A DE4407779C2 (de) 1994-03-09 1994-03-09 Sprühdüse zur Erzeugung von Sprühnebeln

Publications (3)

Publication Number Publication Date
EP0671217A2 EP0671217A2 (de) 1995-09-13
EP0671217A3 EP0671217A3 (de) 1996-03-27
EP0671217B1 true EP0671217B1 (de) 1999-09-29

Family

ID=6512210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119909A Expired - Lifetime EP0671217B1 (de) 1994-03-09 1994-12-16 Sprühdüse zur Erzeugung von Sprühnebeln

Country Status (5)

Country Link
EP (1) EP0671217B1 (no)
AT (1) ATE185092T1 (no)
DE (2) DE4407779C2 (no)
FI (1) FI108407B (no)
NO (1) NO302866B1 (no)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19617685C2 (de) * 1996-05-03 2002-11-07 Deutsch Zentr Luft & Raumfahrt Kegelstrahldralldüse
FR2802446B1 (fr) * 1999-12-16 2002-04-12 Oreal Buse pour recipient aerosol
GB2395660B (en) * 2002-11-28 2006-09-06 Kidde Ip Holdings Ltd Fire extinguishant discharge method and apparatus
DE602004020445D1 (de) 2004-04-08 2009-05-20 Kidde Ip Holdings Ltd Verfahren und Vorrichtung zum Sprühen eines Feuerlöschmittels
DE102004040802A1 (de) * 2004-08-23 2006-03-09 Daimlerchrysler Ag Sprühvorrichtung zur Untersuchung der Fahrzeugverschmutzung im Windkanal
RU2478409C1 (ru) * 2012-03-20 2013-04-10 Олег Савельевич Кочетов Способ модульного пожаротушения
CN104289333A (zh) * 2014-08-25 2015-01-21 洛阳帝博石化装备有限公司 催化裂化剂喷雾干燥喷头
JP6474162B2 (ja) * 2016-04-28 2019-02-27 株式会社ニフコ ノズル装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE45748C (de) * DREYER,ROSENKRANZ 8c DROOP in Hannover Zerstäuber
GB191221703A (en) * 1912-09-24 1913-09-24 William Wright An Improved Spraying or Sprinkling Device.
US1654381A (en) * 1925-09-23 1927-12-27 Monarch Mfg Works Inc Spraying nozzle
FR669134A (fr) * 1929-02-04 1929-11-12 Procédé et dispositif pour la pulvérisation des liquides
GB419541A (en) * 1933-06-07 1934-11-14 Jack William Allen Improvements in or relating to spray jets and nozzles, more particularly for viscousliquids
DE920117C (de) * 1942-07-12 1954-11-11 Maschf Augsburg Nuernberg Ag Duese zur Zerstaeubung oder Verteilung von stroemenden Medien
DE1750676U (de) * 1957-03-22 1957-08-14 Schmitz & Co J Strahlrohr, insbesondere fuer feuerloeschzwecke.
DE1750080A1 (de) * 1968-03-28 1972-01-05 Wiemers Hans Juergen Duese zum Spritzen und Foerdern von Materialien
DD116398A1 (no) * 1974-04-25 1975-11-20
FR2339414A1 (fr) * 1976-01-27 1977-08-26 Hydrovide Dispositif de lutte contre l'incendie
CH625718A5 (en) * 1977-10-06 1981-10-15 Luwa Ag Nozzle for ejecting liquid
GB2008981B (en) * 1977-12-05 1982-03-31 Clayton Heyes Eng Co Ltd Water spray nozzles for use in coal mines
US4512520A (en) * 1983-05-11 1985-04-23 Steam Systems And Services, Incorporated Dual element desuperheater apparatus
EP0244204A1 (en) * 1986-04-28 1987-11-04 Western Packaging Systems Limited Low pressure atomization nozzle

Also Published As

Publication number Publication date
NO950836L (no) 1995-09-11
DE59408789D1 (de) 1999-11-04
NO302866B1 (no) 1998-05-04
FI951025A0 (fi) 1995-03-06
DE4407779C2 (de) 1997-07-31
ATE185092T1 (de) 1999-10-15
EP0671217A3 (de) 1996-03-27
FI951025A (fi) 1995-09-10
EP0671217A2 (de) 1995-09-13
NO950836D0 (no) 1995-03-03
DE4407779A1 (de) 1995-09-14
FI108407B (fi) 2002-01-31

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