EP0671216B1 - Sprühdüse zur Erzeugung eines Doppel-Sprühnebel-Kegels - Google Patents

Sprühdüse zur Erzeugung eines Doppel-Sprühnebel-Kegels Download PDF

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Publication number
EP0671216B1
EP0671216B1 EP94119899A EP94119899A EP0671216B1 EP 0671216 B1 EP0671216 B1 EP 0671216B1 EP 94119899 A EP94119899 A EP 94119899A EP 94119899 A EP94119899 A EP 94119899A EP 0671216 B1 EP0671216 B1 EP 0671216B1
Authority
EP
European Patent Office
Prior art keywords
housing
flow
spray nozzle
cylindrical
swirl
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
EP94119899A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0671216A2 (de
EP0671216A3 (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
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 filed Critical Total Walther GmbH Feuerschutz und Sicherheit
Publication of EP0671216A2 publication Critical patent/EP0671216A2/de
Publication of EP0671216A3 publication Critical patent/EP0671216A3/de
Application granted granted Critical
Publication of EP0671216B1 publication Critical patent/EP0671216B1/de
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
    • 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
    • B05B1/3489—Nozzles having concentric outlets
    • 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
    • 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
    • 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
    • B05B1/3431—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 the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3442—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 the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/061—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with several liquid outlets discharging one or several liquids
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge

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 radial being in a pipeline Fire extinguishing system built-in spray nozzle from a housing with a built-in a swirl mixing chamber forming flow body exists on its surface has one or more helical swirl grooves with an axial inlet opening, wherein the swirl grooves with the housing form swirl channels which are in one of the housing and the Flow body formed swirl mixing chamber end and that the flow body with a spigot ends in front of the cylindrical nozzle opening.
  • Such nozzles are used for spraying liquids the liquid distribution a uniform spray pattern, especially in Fire extinguishing systems are aimed for.
  • 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 annulus. This means that when the Water flow from the nozzle through the formation of internal vortices in the spray cone Sets hollow cone.
  • Another disadvantage with the older spray nozzle is seen in that the intended swirl channels tend to clog and also the swirl body causes high processing times during production.
  • the invention has for its object to provide a spray nozzle with which Disadvantages of the older spray nozzles can be avoided and with a spray cone as Full cone is generated with a more intense internal vortex formation.
  • the flow body in one of one Shell housing supported flow housing that sits at the bottom cylindrical tube with the cylindrical nozzle opening has that Flow housing together with the jacket housing an outer swirl mixing chamber and forms an annular gap at a distance from the lower end of the tube, and that the casing with one or more tangentially and radially inclined holes is provided, which end in the outer swirl mixing chamber.
  • the spray angle of the emerging spray mist can be adjusted by a corresponding Flow body and nozzle outlet geometry between 60 ° and 140 ° for the outer and 60 ° to 90 ° for the inner spray cone. Details are in the Drawing description reproduced.
  • the outer, higher set annular gap and the inner cylindrical nozzle opening an intensive mixing of the two spray cones to a full cone.
  • the nozzle outlets of both nozzles are coordinated so that the outer one Spray cone penetrates the inner spray cone at an angle in the initial area and thus accelerates the inner spray cone.
  • the flow rates of the two Water flows are coordinated so that they are both the same. Because of that comes it to a partial mixture of the two swarms of drops. As a result, the Hollow cone typical of swirl nozzles when water emerges from the nozzle through the outer finer spray cone is avoided. Mixing the swarms of drops Both spray cones have a larger throw and better penetration of the total spray jets. The containment and penetration effect will be improved. This makes the nozzle particularly suitable for fire fighting particularly intensely burning fuels in the fire cooling phase.
  • the spray nozzle 1 which is inserted radially in a pipe 2, consists of a inner flow housing 6 and a surrounding shell housing 11.
  • a flow body 3 which consists of an upper cylindrical part 23, a conical middle part 16 and a lower cylindrical Pin 9 is made.
  • the cylindrical part 23 is in an inner bore 24 of the Flow housing 6 embedded.
  • the surface of the conical middle part 16 is with provided several helical swirl grooves 4, which with axial inlet openings 5 in cylindrical part 23 are connected.
  • the flow housing 6 is in the range of Middle part 16 is formed as a conical bore 17, and both parts 6, 17 are so designed that they sit in each other almost without a gap. Through this configuration swirl channels 7 are formed which end in an inner swirl mixing chamber 8.
  • the jacket housing 11 surrounding the flow housing 6 is designed in such a way that an outer swirl mixing chamber 13 is formed which extends over a tapering section merges into an annular gap 14.
  • the annular gap 14 is in the Area of a cylindrical tube 12 of the flow housing 6 and is above the arranged lower end of the tube 12.
  • the casing 11 is also several radially and tangentially inclined bores 15 which are in the outer Swirl mixing chamber 13 ends.
  • the casing 11 surrounded with a protective housing 20, which together with the casing 11 Forms annular space 21 from which the bores 15 extend.
  • the protective housing 20 with the annular space 21 is one advantageous embodiment.
  • the protective housing 20 with its lower end 22 pulled down so far that there is protection for the cylindrical tube 12 of the Flow housing 6 forms.
  • the water to be atomized is led through two separate waterways.
  • the one Path goes through the inlet openings 5 and the swirl channels 7 to the cylindrical Nozzle opening 10 and forms an inner spray cone there.
  • the second waterway passes through the annular space 21 and the holes 15 to the slightly higher one Annular gap 14 from which the water emerges as an outer spray cone.
  • the entering is via the swirl channels 7 and the inner swirl mixing chamber 8 Flow stabilizes and accelerates.
  • the swirl channels 7 run helically under one Angles from 30 ° to 60 °. This construction is in contrast to the previous one known spray nozzles further acceleration of the water flow in the Swirl channels reached.
  • the swirl channels furthermore cause a strong tearing open Bundle of drops, which causes the drop surface to burst. This causes one increased throwing distance and penetrability of the spray jet with full cone at the source of the fire.
  • the swirl channels 7 run out in the inner swirl mixing chamber 8, which too a swirl and thus a further surface burst of the Water flow leads.
  • Through the pin 9 receives the water flow in the interior Swirl mixing chamber 8 stabilization and bundling before passing through the spray nozzle leaves the nozzle opening 10.
  • the inner spray cone so created is through something coarser drop spectrum marked.
  • the drops of the inner spray cone serve as a carrier medium for the finer drops in the outer spray cone.
  • the annular gap 14 formed by the cylindrical tube 12 and the casing 11 causes additional stabilization and in the outer swirl mixing chamber 13 Bundling of the outer spray cone emerging from the annular gap 14.
  • a vortex zone forms within the spray cone jacket, which ensures particularly good mixing with the inner spray cone.
  • the invention provides that the ratio of the cross section of the swirl channels 7 to the largest ring cross section of the inner Swirl mixing chamber 8 is in a range of 1: 2 to 1: 5 and that the ratio of Cross section of the holes 15 to the largest ring cross section of the outer Swirl mixing chamber 13 is in a range from 1: 2 to 1:10.
  • the inner spray cone is due to the special design of the inner swirl mixing chamber with the cylindrical pin 9 of the flow body 3 and the arranged below cylindrical nozzle opening 10 is released as a full cone, which has no instabilities.
  • the liquid film should continue to be grated. This can be done in that the water-bearing Surfaces in the outer 13 and in the inner swirl mixing chamber 8 as well as the inner Surface of the flow body 3 are roughened in the region of the swirl channels 7. A Roughening can be done in the usual way.

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)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
EP94119899A 1994-03-09 1994-12-16 Sprühdüse zur Erzeugung eines Doppel-Sprühnebel-Kegels Expired - Lifetime EP0671216B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407780A DE4407780C2 (de) 1994-03-09 1994-03-09 Sprühdüse zur Erzeugung eines Doppel-Sprühnebel-Kegels
DE4407780 1994-03-09

Publications (3)

Publication Number Publication Date
EP0671216A2 EP0671216A2 (de) 1995-09-13
EP0671216A3 EP0671216A3 (de) 1996-04-03
EP0671216B1 true EP0671216B1 (de) 2000-03-22

Family

ID=6512212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119899A Expired - Lifetime EP0671216B1 (de) 1994-03-09 1994-12-16 Sprühdüse zur Erzeugung eines Doppel-Sprühnebel-Kegels

Country Status (5)

Country Link
EP (1) EP0671216B1 (fi)
AT (1) ATE190867T1 (fi)
DE (2) DE4407780C2 (fi)
FI (1) FI108406B (fi)
NO (1) NO301107B1 (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636232B2 (en) 2004-12-15 2014-01-28 Marioff Corporation Oy Method for spraying a medium and spraying nozzle

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5862871A (en) * 1996-02-20 1999-01-26 Ccore Technology & Licensing Limited, A Texas Limited Partnership Axial-vortex jet drilling system and method
DE19627353C1 (de) * 1996-06-27 1997-10-23 Feuerschutz G Knopf Gmbh Verfahren zur dynamischen Löschmittelanwendung und Vorrichtung zur Durchführung des Verfahrens
DE19951886C2 (de) * 1999-10-28 2003-12-18 Bayern Chemie Gmbh Flugchemie Löschgerät
DE10010881B4 (de) 2000-02-29 2006-09-07 Torsten Dipl.-Ing. Clauß Verfahren und Vorrichtung zum Ausbringen von flüssigen Medien
DE10010880B4 (de) * 2000-02-29 2006-09-07 Torsten Dipl.-Ing. Clauß Verfahren und Vorrichtung zum Ausbringen von flüssigen Medien
GB2395660B (en) * 2002-11-28 2006-09-06 Kidde Ip Holdings Ltd Fire extinguishant discharge method and apparatus
EP1728535B1 (en) 2005-05-26 2010-09-29 Kidde IP Holdings Limited Extinguishing fires and suppressing explosions
DE102008057295A1 (de) 2008-11-14 2010-05-20 Venjakob Maschinenbau Gmbh & Co. Kg Ringspaltdüse
EP2696940B1 (en) 2011-04-12 2020-03-11 Prevent System AS A fire-fighting extinguisher nozzle; a method for fabricating such nozzle, and a method for producing a spray of fine-droplet mist
US8579213B2 (en) * 2012-02-27 2013-11-12 Delavan Inc. Single circuit multiple spray cone pressure atomizers
DE102012019951A1 (de) * 2012-10-11 2014-04-17 Man Diesel & Turbo Se Vorrichtung zum Einbringen einer Flüssigkeit in einen Abgasstrom und Abgasnachbehandlungssystem
DE102013203339A1 (de) * 2013-02-28 2014-08-28 Lechler Gmbh Zweistoffdüse und Verfahren zum Versprühen eines Flüssigkeit-Gas-Gemisches
DE102017113424A1 (de) * 2017-06-19 2018-12-20 protectismundi GmbH Verfahren und Vorrichtung zum Erzeugen eines rotierenden Hohlstrahls
CN111425156A (zh) * 2020-05-21 2020-07-17 湖南科技大学 一种喷雾降尘钻杆及其方法
CN114534151A (zh) * 2022-01-30 2022-05-27 中原工学院 一种细水雾幕喷头及使用该细水雾幕喷头的水幕系统

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DE251040C (fi) *
FR11016E (fr) * 1909-05-19 1909-11-26 Jean Frederic Paul Kestner Appareil perfectionné pour humidifier l'air
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636232B2 (en) 2004-12-15 2014-01-28 Marioff Corporation Oy Method for spraying a medium and spraying nozzle

Also Published As

Publication number Publication date
FI108406B (fi) 2002-01-31
NO301107B1 (no) 1997-09-15
DE4407780C2 (de) 1996-02-08
EP0671216A2 (de) 1995-09-13
NO950835L (no) 1995-09-11
EP0671216A3 (de) 1996-04-03
NO950835D0 (no) 1995-03-03
FI951026A (fi) 1995-09-10
FI951026A0 (fi) 1995-03-06
DE4407780A1 (de) 1995-10-05
ATE190867T1 (de) 2000-04-15
DE59409233D1 (de) 2000-04-27

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