EP0801990B1 - Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen - Google Patents
Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen Download PDFInfo
- Publication number
- EP0801990B1 EP0801990B1 EP96106071A EP96106071A EP0801990B1 EP 0801990 B1 EP0801990 B1 EP 0801990B1 EP 96106071 A EP96106071 A EP 96106071A EP 96106071 A EP96106071 A EP 96106071A EP 0801990 B1 EP0801990 B1 EP 0801990B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- spray
- outlet aperture
- spray nozzle
- nozzle
- 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
-
- 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
- B05B1/3478—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 the liquid flowing at least two different courses before reaching the swirl chamber
-
- 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
- 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
- B05B1/3447—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 cylinder having the same axis as the outlet
Definitions
- the invention relates to a spray nozzle in the preamble of claim 1 mentioned type, in particular for spraying of water in fire protection systems.
- Spray nozzles have long been well known. You point helical narrow channels that tangentially into one Vortex chamber open with a narrow, coaxial nozzle opening connected is. Through the helical channels the flowing medium, e.g. Water, in rotation added. On the radial path inward to the narrow, coaxial Nozzle opening, the rotation speed becomes considerable increased so that the water exits the nozzle opening through the then effective centrifugal forces to a spray is torn open, which is essentially in the form of a Spray cone spreads.
- the flowing medium e.g. Water
- a disadvantage of this spray nozzle is that inside of the spray cone is little spray, so that there, especially in the center of the spray cone Training area that is not or only in a significantly reduced amount Dimensions is sprayed so that there the extinguishing effect of Spray is correspondingly low.
- a spray nozzle is known, the one Has housing in which a first nozzle part is arranged. Between the first nozzle part and an inner wall of the housing a first vortex chamber is formed into which is removed from the swirl axis on the outside of the first nozzle part formed, helical first channel for feeding of water flows tangentially and one to the vortex axis has coaxial first outlet opening.
- the second nozzle part arranged in the nozzle part is a second swirl chamber formed in the distant from the vertebral axis helical formed on the outside of the second nozzle part second channel for supplying water tangentially opens and the one to the vertebral axis and to the first outlet opening has coaxial second outlet opening.
- water flows through the helical one first channel to the first outlet, so that under the spray nozzle a spray in the form of a forms the first spray cone.
- water flows through the helical second channel to the second outlet opening, so that there is a spray in the shape of the spray nozzle of a second spray cone.
- the second spray cone has a smaller opening angle than the first spray cone on, so that the inside of the first spray cone through the second spray cone is filled with spray mist and thus also achieves an extinguishing effect inside the first spray cone is.
- a disadvantage of the known spray nozzle is that their structure based on the generation of the second spray cone required second arranged in the first nozzle part Nozzle part is complex, so that the known spray nozzle is expensive is in the making.
- the second nozzle part inside the first nozzle part is arranged, its dimensions are small, so that also the cross section of the on the outside of the second nozzle part second channel formed is correspondingly low. There is therefore a risk that the second channel through Penetration of dust or the like in the spray nozzle. This has the consequence that the through the second nozzle part generated second spray cone not or only partially trains so that the extinguishing effect of the spray nozzle is impaired is.
- the spray range is also the second Vortex nozzle low.
- DD 245 825 A1 is a spray nozzle made of a hollow nozzle body with a demolition phase of 120 ° at the outlet opening known of the nozzle head in which a nozzle insert with outer swirl grooves and an inner hollow screw inserted is, wherein the nozzle insert in the nozzle hollow body is a washing compartment leaves the water in a rotating relaxation phase with simultaneous pressure build-up in front of the outlet opening enters and after flowing through the outlet opening itself forms a water cone at the demolition phase of the nozzle head creates a tear-off effect and thus a refinement of the Spray pattern achieved by reducing the droplet size becomes. Tears due to the rotation of the water in the wash cabinet the water at the outlet opening of the nozzle head into one Spray cone on.
- FR-473 630 is a spray nozzle of the type concerned known in which the vortex chamber is trumpet-shaped and is closed off by a wall in its wide entrance area is in which there are slits through which water with a speed component in the circumferential direction enters the vortex chamber. This water settles as Layer on the inner wall of the trumpet-shaped vortex chamber and flows along the same to the tapered one Part of the swirl chamber, which is due to the speed rotation component leaves as a spray cone.
- DE-A-332 448 discloses a liquid distributor, in front of the one containing the outlet opening, A plate is arranged on the nozzle base, which is both inclined tangential holes as well as a central hole having. While in the first the liquid before the Exit is set in rotating movements the central liquid jet that also the inside of the generated drop cone completely with liquid is filled in, ensuring a good distribution of the Liquid is reached over the entire cross section. In ??? of the two currents are very large Cross-sectional expansion in the mixing chamber destroyed. The spray angle of the nozzles is not affected by the Angle of inclination of the oblique hole or the geometry the mixing chamber. The present solution dispenses with such a mixing chamber. There will be two Generates currents, namely a straight jet and one Vortex flow, both due to missing or very slight narrowing of the cross-section until water emerges, are maintained, which means that they overlay common nozzle mouth and only after mix.
- a spray nozzle with a housing in which a swirl chamber is arranged, into which, at least a first channel for supplying water opens away tangentially from the swirl axis and which has a first outlet opening coaxial with the swirl axis and with one arranged within the vortex chamber, coaxial to the first outlet opening, second outlet opening which is located at the end of a second channel coaxial to the vortex axis, the second channel having an extension in front of the first outlet opening. Because of the smaller diameter of the first outlet opening compared to the second outlet opening, a mixture forms in this nozzle within the swirl chamber, which is pressed under pressure through the first outlet opening. Tearing into a spray mist is not possible with this nozzle.
- the invention has for its object a spray nozzle of the type concerned, which have the disadvantages of known spray nozzle does not have the structure is simplified, which is inexpensive to manufacture and at which ensures safe functioning.
- the basic idea of the teaching according to the invention is in it, instead of an inner second vortex nozzle second channel coaxial to the vortex axis of the vortex chamber to be provided and upstream of the second Outlet opening to generate a pressure drop so that water flowing through the second channel at the transition into an area of lower pressure to a spray is torn open.
- the second channel can be extended lengthways of the nozzle part extending, continuous recess is formed be that is easily generated.
- the production the spray nozzle according to the invention is thus simple and thus inexpensive.
- the extension seen in the flow direction after a cross-sectional constriction of the second channel is due to the narrowing of the cross-section and that Subsequent expansion formed an aperture on the forms a high pressure drop, so that the water particularly is effectively torn up into a spray.
- the extension through a conical wall area of the second channel educated.
- the second channel is particularly easy by creating a hole with a graduated Diameter can be generated. It is convenient the cross-sectional constriction in the flow direction gradually decreasing training.
- a nozzle part arranged on the outside the first channel and in the center the second channel is formed is.
- the shape and droplet size of the second By appropriately dimensioning the second channel, in particular the expansion and / or the narrowing of the cross-section, are the shape and droplet size of the second
- the outlet opening of the spray mist within wide limits can be influenced, so that the spray characteristic of the invention Spray nozzle can be influenced within wide limits.
- the spray characteristics can be selected appropriately of the distance in the flow direction of the first outlet opening can be influenced by the second outlet opening. It is expediently the distance between the second outlet opening adjustable from the first outlet.
- the spray nozzle shown in the drawing has a Housing 1 with an external thread 2 for screwing in Spray nozzle in a feed line, not shown.
- the Housing has a cylindrical inner wall 3, which in a conical inner wall 4 merges into a first Exit opening 5 leads.
- the housing 1 has an internal thread 7 into which a nozzle part 8 is screwed in with its external thread 9.
- helical first channel 11 and others not shown in the drawing helical channels for supplying water are formed, which is symbolized by a dash-dotted line Vortex axis 12 run around and tangentially into one between the nozzle part 8 and the cylindrical inner wall 3 or the conical inner wall 4 of the housing Vortex chamber 13 open.
- the second channel 14 has a first cylindrical wall region 15, which over a conically narrowing wall area 16 into a second cylindrical Wall area 17 of smaller cross section merges, which leads to a cross-sectional constriction 18.
- a cross-sectional constriction 18 is an extension through a second conical wall area 19 of the second Channel 14 formed in a third cylindrical wall area 20 passes.
- the third cylindrical wall area 20 leads to a second outlet opening 21.
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)
- Nozzles (AREA)
Description
Claims (6)
- Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen
mit einem Gehäuse (1), welches mit einem Düsenteil (8) eine Wirbelkammer (13) bildet,
in die, entfernt von der Wirbelachse (12), wenigstens ein erster, wendelförmiger Kanal (11) zur Zuführung von Wasser im Wesentlichen tangential mündet und die eine zur Wirbelachse (12) koaxiale erste Austrittssöffnung (5) aufweist und
mit einer innerhalb der Wirbelkammer (13) angeordneten, zur ersten Austrittsöffnung (5) koaxialen zweiten Austrittsöffnung (21), die sich am Ende eines zur Wirbelachse (12) koaxialen zweiten Kanales (14) befindet,
dadurch gekennzeichnet, dass
der zweite Kanal (14) vor der zweiten Austrittsöffnung (21) eine Erweiterung (19) vor einem zylindrischen Wandungsbereich (20) aufweist, deren zur Kanalachse senkrechte Querschnittsfläche in Strömungsrichtung zunimmt, dass die zur Kanalachse senkrechte Querschnittsfläche des zweiten Kanals (14) in Strömungsrichtung gesehen nach der Erweiterung nicht mehr abnimmt und dass die zweite Austrittsöffnung (21) in Strömungsrichtung gesehen so dicht vor der ersten Austrittsöffnung (5) angeordnet ist, dass der aus der zweiten Austrittsöffnung (21) austretende, durch den Unterdruck im Bereich der Erweiterung des zweiten Kanals (14) radial aufgerissene Strahl sich als Sprühnebel im Innern des aus der ersten Austrittsöffnung (5) austretenden Sprühkegels ausbreitet. - Sprühdüse nach Anspruch 1,
dadurch gekennzeichnet, dass
die Erweiterung in Strömungsrichtung gesehen nach einer Querschnittsverengung (16, 18) des zweiten Kanals (14) gebildet ist. - Sprühdüse nach Anspruch 1,
dadurch gekennzeichnet, dass
die Erweiterung durch einen konischen Wandungsbereich (19) des zweiten Kanals (14) gebildet ist. - Sprühdüse nach Anspruch 2,
dadurch gekennzeichnet, dass
der Querschnitt (16, 18) in Strömungsrichtung stufenweise abnehmend ausgebildet ist. - Sprühdüse nach Anspruch 1,
dadurch gekennzeichnet, dass
in dem Gehäuse (1) ein Düsenteil (8) angeordnet ist, an dessen Außenseite (10) der erste Kanal (11) und in dem zentrisch der zweite Kanal (14) gebildet ist. - Sprühdüse nach Anspruch 1,
dadurch gekennzeichnet, dass
der Abstand der zweiten Austrittsöffnung (21) von der ersten Austrittsöffnung (5) einstellbar ist.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4440681A DE4440681C2 (de) | 1994-11-15 | 1994-11-15 | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
AT96106071T ATE219972T1 (de) | 1996-04-18 | 1996-04-18 | Sprühdüse, insbesondere zum versprühen von wasser in brandschutzanlagen |
EP96106071A EP0801990B1 (de) | 1994-11-15 | 1996-04-18 | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
DE59609407T DE59609407D1 (de) | 1996-04-18 | 1996-04-18 | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
US08/635,599 US6129154A (en) | 1994-11-15 | 1996-04-22 | Spray nozzle, especially for spraying water in fire prevention systems |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4440681A DE4440681C2 (de) | 1994-11-15 | 1994-11-15 | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
EP96106071A EP0801990B1 (de) | 1994-11-15 | 1996-04-18 | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
US08/635,599 US6129154A (en) | 1994-11-15 | 1996-04-22 | Spray nozzle, especially for spraying water in fire prevention systems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0801990A1 EP0801990A1 (de) | 1997-10-22 |
EP0801990B1 true EP0801990B1 (de) | 2002-07-03 |
Family
ID=27206962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96106071A Expired - Lifetime EP0801990B1 (de) | 1994-11-15 | 1996-04-18 | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
Country Status (3)
Country | Link |
---|---|
US (1) | US6129154A (de) |
EP (1) | EP0801990B1 (de) |
DE (1) | DE4440681C2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19608349A1 (de) * | 1996-03-05 | 1997-09-11 | Abb Research Ltd | Druckzerstäuberdüse |
DE19713377A1 (de) * | 1997-04-01 | 1998-10-15 | Siemens Ag | Düse, Verwendung einer Düse und Verfahren zur Eindüsung eines ersten Fluids in ein zweites Fluid |
RU2159649C1 (ru) * | 2000-03-28 | 2000-11-27 | Общество с ограниченной ответственностью "ЮНИПАТ" | Спринклер (варианты) |
KR100470762B1 (ko) * | 2002-02-08 | 2005-03-08 | 주식회사 윈 | 소화용 분사노즐 |
US20040256118A1 (en) * | 2002-11-28 | 2004-12-23 | Kidde-Fenwal Inc. | Fire extinguisher discharge method and apparatus |
GB2395660B (en) * | 2002-11-28 | 2006-09-06 | Kidde Ip Holdings Ltd | Fire extinguishant discharge method and apparatus |
US20050011652A1 (en) * | 2003-07-17 | 2005-01-20 | Jinsong Hua | Spray head and nozzle arrangement for fire suppression |
DE10349760A1 (de) * | 2003-10-24 | 2005-06-02 | Hemsing Sachverständigenbüro für Brandschutz GmbH | Löschdüsenträger |
ATE427777T1 (de) | 2004-04-08 | 2009-04-15 | Kidde Ip Holdings Ltd | Verfahren und vorrichtung zum spruhen eines feuerlíschmittels |
FI116661B (fi) * | 2004-12-15 | 2006-01-31 | Marioff Corp Oy | Menetelmä väliaineen suihkuttamiseksi ja suihkutussuutin |
AU2007297696B2 (en) * | 2006-09-19 | 2013-01-10 | Hypro, Llc | Spray head with covers |
EP2570190A1 (de) * | 2011-09-15 | 2013-03-20 | Braun GmbH | Sprühdüse zum Abgeben einer Flüssigkeit und Sprüheinrichtung, die eine solche Sprühdüse umfasst |
ES2544310T3 (es) * | 2012-02-06 | 2015-08-28 | Lg Electronics Inc. | Máquina de lavado que comprende una tobera y un calentador dispuesto en un conducto de secado y procedimiento de control de la misma |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE141626C (de) * | ||||
DE245825C (de) * | ||||
FR473630A (de) * | 1914-06-06 | 1915-01-19 | ||
DE332438C (de) * | 1918-10-10 | 1921-01-31 | Basf Ag | Fluessigkeitsverteiler |
US1395442A (en) * | 1918-12-18 | 1921-11-01 | Pyrene Mfg Co | Spray-nozzle |
GB166515A (en) * | 1920-07-16 | 1922-11-30 | William Peyton Dunham | Improvements in the art of firing boilers by means of fuel oil |
FR606356A (fr) * | 1925-10-08 | 1926-06-12 | Merlin Gerin | Armature de condensateur à haute tension |
GB285763A (en) * | 1927-10-25 | 1928-02-23 | George Fardell Glenny | Improvements in or relating to spraying nozzles |
US2134347A (en) * | 1937-08-28 | 1938-10-25 | Spray Engineering Co | Play pipe construction |
DE933235C (de) * | 1950-08-25 | 1955-09-22 | Otto Dipl-Ing Haessler | Zerstaeuberduese fuer Schaedlingsbekaempfungsspritzen |
US2801881A (en) * | 1956-03-23 | 1957-08-06 | John F Campbell | Open orifice nozzle and valve |
NL135002C (de) * | 1965-12-16 | |||
BE848456A (fr) * | 1976-11-17 | 1977-03-16 | Perfectionnements aux dispositifs gicleurs. | |
DD141626A1 (de) * | 1979-03-27 | 1980-05-14 | Herzog Hans Joachim | Drallduese zur erzeugung von spruehnebeln |
DD245825B3 (de) * | 1986-02-10 | 1992-11-26 | H J Herzog Stroemungstechnisch | Spruehduese zur bekaempfung von staub- glimmbraenden |
DD270664A1 (de) * | 1988-04-18 | 1989-08-09 | Univ Magdeburg Tech | Spruehduese mit bezueglich der fluessigkeitsverteilung gleichmaeszigem spruehbild |
-
1994
- 1994-11-15 DE DE4440681A patent/DE4440681C2/de not_active Expired - Fee Related
-
1996
- 1996-04-18 EP EP96106071A patent/EP0801990B1/de not_active Expired - Lifetime
- 1996-04-22 US US08/635,599 patent/US6129154A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0801990A1 (de) | 1997-10-22 |
DE4440681A1 (de) | 1996-05-30 |
DE4440681C2 (de) | 1996-10-17 |
US6129154A (en) | 2000-10-10 |
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