EP0671217B1 - Sprühdüse zur Erzeugung von Sprühnebeln - Google Patents
Sprühdüse zur Erzeugung von Sprühnebeln Download PDFInfo
- 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
Links
Images
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)
Description
Claims (7)
- Sprühdüse zur Erzeugung von Sprühnebeln im Niederdruckverfahren, insbesondere für die Brandbekämpfung mit stationären Wassernebel-Feuerlöschanlagen, wobei die radial in einer Rohrleitung (2) der Feuerlöschanlage eingebaute Sprühdüse aus einem Gehäuse (3) mit einem darin eingebauten, eine Drallmischkammer bildenden Strömungskörper (4) besteht, der mit einem zapfenförmigen Ende einer Düsenöffnung (9) zugeordnet ist, dadurch gekennzeichnet, daß der Strömungskörper (4) an dem der Düsenöffnung (9) entgegengesetzten Ende dicht in einer Bohrung (10) des Gehäuses (3) sitzt und zur Düsenöffnung (9) hin mit einem konischen Teil (6) versehen ist, an das sich ein zylindrischer Zapfen (7) anschließt, der in der Düsenöffnung (9) einen Ringspalt (15) bildet und daß das Gehäuse (3) mit ein oder mehreren tangential und radial geneigten Bohrungen (14) versehen ist, die in der sich zur Düsenöffnung (9) hin im Querschnitt zunächst erweiternden und dann verengenden Drallmischkammer (8) enden.
- Sprühdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Bohrung des Gehäuses (10) zylindrisch ausgebildet ist und im Bereich des kleinsten Durchmessers (16) des konischen Teiles (6) in eine sich zur Düsenöffnung (9) hin verjüngende konische Bohrung (11) mündet, an die sich die zylindrische Düsenöffnung (9) anschließt.
- Sprühdüse nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Strömungskörper (4) im oberen Teil aus einem zylindrischen Teil (5) mit einem Außengewinde (12) besteht, daß in ein Innengewinde (13) der zylindrischen Bohrung (10) des Gehäuses (3) einschraubbar ist.
- Sprühdüse nach Anspruch 1, dadurch gekennzeichnet, daß die geneigten Bohrungen (14) tangential unter einem Winkel α zwischen 15 ° und 45 °, vorzugsweise 30 ° und 40 ° und radial unter einem Winkel β zwischen 5 ° und 40 °, vorzugsweise zwischen 10 ° und 20 ° geneigt sind.
- Sprühdüse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Verhältnis des Querschnittes der geneigten Bohrungen (14) zum größten Ringquerschnitt der Drallmischkammer (8) in einem Bereich von 1 : 2 bis 1 : 10 liegt, und daß das Verhältnis des Querschnittes der geneigten Bohrungen (14) zum Querschnitt des Ringspaltes (15) im Bereich von 1 : 1,5 bis 1 : 5 liegt.
- Sprühdüse nach Anspruch 1, dadurch gekennzeichnet, daß der Zapfen (7) mit seinem unteren Ende mit der äußeren Kante der Düsenöffnung (9) abschließt oder über das Gehäuse (3) hinausragt.
- Sprühdüse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Oberflächen des konischen Teiles (6) und des Zapfens (7) sowie die Flächen der Bohrungen (10 und 11) und der Düsenöffnung (9) aufgerauht sind.
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 (de) |
AT (1) | ATE185092T1 (de) |
DE (2) | DE4407779C2 (de) |
FI (1) | FI108407B (de) |
NO (1) | NO302866B1 (de) |
Families Citing this family (8)
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 |
ATE427777T1 (de) | 2004-04-08 | 2009-04-15 | Kidde Ip Holdings Ltd | Verfahren und vorrichtung zum spruhen eines feuerlíschmittels |
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)
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 (de) * | 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 |
AU7212487A (en) * | 1986-04-28 | 1987-10-29 | Western Packaging Systems Ltd. | Low pressure atomization nozzle |
-
1994
- 1994-03-09 DE DE4407779A patent/DE4407779C2/de not_active Expired - Fee Related
- 1994-12-16 AT AT94119909T patent/ATE185092T1/de active
- 1994-12-16 EP EP94119909A patent/EP0671217B1/de not_active Expired - Lifetime
- 1994-12-16 DE DE59408789T patent/DE59408789D1/de not_active Expired - Lifetime
-
1995
- 1995-03-03 NO NO950836A patent/NO302866B1/no unknown
- 1995-03-06 FI FI951025A patent/FI108407B/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO302866B1 (no) | 1998-05-04 |
EP0671217A3 (de) | 1996-03-27 |
EP0671217A2 (de) | 1995-09-13 |
FI108407B (fi) | 2002-01-31 |
NO950836D0 (no) | 1995-03-03 |
FI951025A0 (fi) | 1995-03-06 |
DE59408789D1 (de) | 1999-11-04 |
DE4407779A1 (de) | 1995-09-14 |
NO950836L (no) | 1995-09-11 |
FI951025A (fi) | 1995-09-10 |
DE4407779C2 (de) | 1997-07-31 |
ATE185092T1 (de) | 1999-10-15 |
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