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EP0801990A1 - Buse de pulvérisation, en particulier pour la pulvérisation d'eau dans les installations de protection contre l'incendie - Google Patents

Buse de pulvérisation, en particulier pour la pulvérisation d'eau dans les installations de protection contre l'incendie Download PDF

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Publication number
EP0801990A1
EP0801990A1 EP96106071A EP96106071A EP0801990A1 EP 0801990 A1 EP0801990 A1 EP 0801990A1 EP 96106071 A EP96106071 A EP 96106071A EP 96106071 A EP96106071 A EP 96106071A EP 0801990 A1 EP0801990 A1 EP 0801990A1
Authority
EP
European Patent Office
Prior art keywords
channel
outlet opening
spray
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.)
Granted
Application number
EP96106071A
Other languages
German (de)
English (en)
Other versions
EP0801990B1 (fr
Inventor
Rolf Hoffmann
Jorg Mücke
Wilfried Heize
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.)
MIMX HOLDINGS GMBH & CO. KG
MINIMAX HOLDING GMBH
Original Assignee
Awab Umformtechnik GmbH and Co KG
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
Priority to DE4440681A priority Critical patent/DE4440681C2/de
Application filed by Awab Umformtechnik GmbH and Co KG filed Critical Awab Umformtechnik GmbH and Co KG
Priority to EP96106071A priority patent/EP0801990B1/fr
Priority to AT96106071T priority patent/ATE219972T1/de
Priority to DE59609407T priority patent/DE59609407D1/de
Priority to US08/635,599 priority patent/US6129154A/en
Publication of EP0801990A1 publication Critical patent/EP0801990A1/fr
Application granted granted Critical
Publication of EP0801990B1 publication Critical patent/EP0801990B1/fr
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
    • B05B1/3478—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 of the type mentioned in the preamble of claim 1, in particular for spraying water in fire protection systems.
  • Spray nozzles have long been well known. They have helical narrow channels that open tangentially into a swirl chamber that is connected to a narrow, coaxial nozzle opening.
  • the flowing liquid medium e.g. Water spinning.
  • the rotational speed is increased considerably, so that the water, upon exiting the nozzle opening, is torn open by the then effective centrifugal forces to form a spray which essentially spreads out in the form of a spray cone.
  • a disadvantage of this spray nozzle is that there is only a small amount of spray in the interior of the spray cone, so that an area is formed there, in particular in the center of the spray cone, which is not sprayed or is sprayed only to a considerably reduced extent, so that there the extinguishing effect of the Spray is correspondingly low.
  • a spray nozzle is known from DD 141 626, which has a housing in which a first nozzle part is arranged.
  • a first swirl chamber is formed between the first nozzle part and an inner wall of the housing, into which a distance on the outside of the first nozzle part distant from the swirl axis formed, helical first channel for supplying water opens tangentially and which has a first outlet opening coaxial to the vortex axis.
  • a second swirl chamber is formed, into which a helical second channel for supplying water formed on the outside of the second nozzle part opens tangentially away from the swirl axis and the one to the tangent Has vortex axis and the second outlet opening coaxial to the first outlet opening.
  • water flows on the one hand through the helical first channel to the first outlet opening, so that a spray mist in the form of a first spray cone forms under the spray nozzle.
  • water flows through the helical second channel to the second outlet opening, so that a spray mist in the form of a second spray cone forms under the spray nozzle.
  • the second spray cone has a smaller opening angle than the first spray cone, so that the inside of the first spray cone is filled with spray mist through the second spray cone and thus an extinguishing effect is also achieved inside the first spray cone.
  • a disadvantage of the known spray nozzle is that its construction is complex owing to the second nozzle part which is required to produce the second spray cone and is arranged in the first nozzle part, so that the known spray nozzle is expensive to manufacture.
  • the second nozzle part Since the second nozzle part is arranged inside the first nozzle part, its dimensions are small, so that the cross section of the second channel formed on the outside of the second nozzle part is correspondingly small. There is therefore a risk that the second channel will become clogged due to the penetration of dust or the like into the spray nozzle. The result of this is that the second spray cone generated by the second nozzle part does not form, or only incompletely, so that the extinguishing effect of the spray nozzle is impaired. In addition, the spray width of the second swirl nozzle is small.
  • DD 245 825 A1 discloses a spray nozzle made of a hollow nozzle body with a tear-off phase of 120 ° at the outlet opening of the nozzle head, in which a nozzle insert with external swirl grooves and an internal hollow screw is inserted, the nozzle insert in the hollow nozzle body leaving a washing space open in which Water enters a rotating relaxation phase with simultaneous pressure build-up in front of the outlet opening and, after flowing through the outlet opening, a water cone forms, which produces a tear-off effect on the tear-off phase of the nozzle head and thus a refinement of the spray pattern is achieved by reducing the droplet size. Due to the rotation of the water in the wash cabinet, the water tears open at the outlet opening of the nozzle head to form a spray cone.
  • a spray nozzle of the type in question is known from FR-473 630, in which the swirl chamber is designed in the shape of a trumpet and is closed in its wide entrance area by a wall in which there are slots through which water enters the swirl chamber with a speed component in the circumferential direction.
  • This water forms a layer on the inner wall of the trumpet-shaped swirl chamber and flows along the same to the tapering part of the swirl chamber, which it leaves as a spray cone due to the speed rotation component.
  • the invention has for its object to provide a spray nozzle of the type in question, which does not have the disadvantages of the known spray nozzle, the structure of which is simplified, which is inexpensive to manufacture and in which a reliable function is ensured.
  • the basic idea of the teaching according to the invention is to provide, instead of an inner second vortex nozzle, a second channel coaxial to the vortex axis of the vortex chamber and to generate a pressure gradient in the direction of flow upstream of the second outlet opening, so that water flowing through the second channel advances at the transition to a region of lower pressure is torn open by a spray.
  • the spray generated in this way spreads inside the spray cone emerging from the swirl chamber from, so that the desired extinguishing effect is achieved even inside this spray cone.
  • the spray mist emerging from the second outlet opening has a higher speed and thus a larger spray distance.
  • the second channel can be formed by a continuous recess which extends in the longitudinal direction of the nozzle part and can be produced in a simple manner.
  • the production of the spray nozzle according to the invention is thus simple and therefore inexpensive.
  • the widening seen in the flow direction, is formed after a cross-sectional narrowing of the second channel.
  • the cross-sectional constriction and the subsequent widening form an orifice on which a high pressure drop forms, so that the water is torn up particularly effectively to form a spray mist.
  • the extension is formed by a conical wall area of the second channel.
  • the second channel can be produced particularly simply by producing a bore with a stepped diameter.
  • the narrowing of the cross section in the flow direction is expediently designed to decrease gradually.
  • a nozzle part is arranged in the housing, on the outside of which the first channel and in the center of which the second channel is formed.
  • the shape and droplet size of the spray emerging from the second outlet opening can be influenced within wide limits by suitable dimensioning of the second channel, in particular the expansion and / or the cross-sectional constriction, so that the spray characteristic of the spray nozzle according to the invention can be influenced within wide limits.
  • the spray characteristic can be influenced by a suitable choice of the distance in the flow direction of the first outlet opening from the second outlet opening.
  • the distance between the second outlet opening is expedient adjustable from the first outlet.
  • the spray nozzle shown in the drawing has a housing 1 with an external thread 2 for screwing the spray nozzle into a feed line, not shown.
  • the housing has a cylindrical inner wall 3, which merges into a conical inner wall 4, which leads to a first outlet opening 5.
  • the housing 1 has an internal thread 7, into which a nozzle part 8 with its external thread 9 is screwed.
  • a helical first channel 11 and further helical channels (not shown in the drawing) for supplying water are formed, which run around a swirl axis 12 symbolized by a dash-dotted line and tangentially into one between the nozzle part 8 and the vortex chamber 13 formed in the cylindrical inner wall 3 or the conical inner wall 4 of the housing.
  • a second channel 14 for supplying water coaxial to the swirl axis 12 is formed in the nozzle part 8.
  • the second channel 14 has a first cylindrical wall area 15, which merges via a conically narrowing wall area 16 into a second cylindrical wall area 17 of smaller cross-section, which leads to a cross-sectional constriction 18.
  • a second conical wall area 19 of the second channel 14 which merges into a third cylindrical wall area 20.
  • 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)
EP96106071A 1994-11-15 1996-04-18 Buse de pulvérisation, en particulier pour la pulvérisation d'eau dans les installations de protection contre l'incendie Expired - Lifetime EP0801990B1 (fr)

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
EP96106071A EP0801990B1 (fr) 1994-11-15 1996-04-18 Buse de pulvérisation, en particulier pour la pulvérisation d'eau dans les installations de protection contre l'incendie
AT96106071T ATE219972T1 (de) 1996-04-18 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 (fr) 1994-11-15 1996-04-18 Buse de pulvérisation, en particulier pour la pulvérisation d'eau dans les installations de protection contre l'incendie
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 true EP0801990A1 (fr) 1997-10-22
EP0801990B1 EP0801990B1 (fr) 2002-07-03

Family

ID=27206962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106071A Expired - Lifetime EP0801990B1 (fr) 1994-11-15 1996-04-18 Buse de pulvérisation, en particulier pour la pulvérisation d'eau dans les installations de protection contre l'incendie

Country Status (3)

Country Link
US (1) US6129154A (fr)
EP (1) EP0801990B1 (fr)
DE (1) DE4440681C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103987464A (zh) * 2011-09-15 2014-08-13 宝洁公司 用于分配流体的喷雾嘴和包括此类喷雾嘴的喷涂器
US12128118B2 (en) 2021-07-29 2024-10-29 The Procter & Gamble Company Aerosol dispenser containing a hairspray composition and a nitrogen propellant

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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
GB2395660B (en) * 2002-11-28 2006-09-06 Kidde Ip Holdings Ltd Fire extinguishant discharge method and apparatus
US20040256118A1 (en) * 2002-11-28 2004-12-23 Kidde-Fenwal Inc. Fire extinguisher 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
EP1584354B1 (fr) 2004-04-08 2009-04-08 Kidde IP Holdings Limited Procédé et appareil d'émission d'un produit extincteur d'incendie
RU2264833C1 (ru) * 2004-09-02 2005-11-27 Долотказин Владимир Исмаилович Распылитель жидкости и огнетушитель
FI116661B (fi) * 2004-12-15 2006-01-31 Marioff Corp Oy Menetelmä väliaineen suihkuttamiseksi ja suihkutussuutin
US7878419B2 (en) * 2006-09-19 2011-02-01 Sta-Rite Industries, Llc Spray head with covers
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
DE102019114868A1 (de) * 2019-06-03 2020-12-03 Minimax Viking Research & Development Gmbh Sprühnebeldüse für Brandbekämpfungsanlagen, sowie Brandbekämpfungsanlagen selbiger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR473630A (fr) * 1914-06-06 1915-01-19
DE332438C (de) * 1918-10-10 1921-01-31 Basf Ag Fluessigkeitsverteiler
GB285763A (en) * 1927-10-25 1928-02-23 George Fardell Glenny Improvements in or relating to spraying nozzles
DE933235C (de) * 1950-08-25 1955-09-22 Otto Dipl-Ing Haessler Zerstaeuberduese fuer Schaedlingsbekaempfungsspritzen
DE1604941B1 (de) * 1965-12-16 1970-05-27 Karlsruhe Augsburg Iweka Zerstaeubungsduese in einem Zerstaeubungstrockner
DD245825A1 (de) * 1986-02-10 1987-05-20 Energieversorgung Ingbetrieb Spruehduese zur bekaempfung von staub- glimmbraenden

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE245825C (fr) *
DE141626C (fr) *
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
US2134347A (en) * 1937-08-28 1938-10-25 Spray Engineering Co Play pipe construction
US2801881A (en) * 1956-03-23 1957-08-06 John F Campbell Open orifice nozzle and valve
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
DD270664A1 (de) * 1988-04-18 1989-08-09 Univ Magdeburg Tech Spruehduese mit bezueglich der fluessigkeitsverteilung gleichmaeszigem spruehbild

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR473630A (fr) * 1914-06-06 1915-01-19
DE332438C (de) * 1918-10-10 1921-01-31 Basf Ag Fluessigkeitsverteiler
GB285763A (en) * 1927-10-25 1928-02-23 George Fardell Glenny Improvements in or relating to spraying nozzles
DE933235C (de) * 1950-08-25 1955-09-22 Otto Dipl-Ing Haessler Zerstaeuberduese fuer Schaedlingsbekaempfungsspritzen
DE1604941B1 (de) * 1965-12-16 1970-05-27 Karlsruhe Augsburg Iweka Zerstaeubungsduese in einem Zerstaeubungstrockner
DD245825A1 (de) * 1986-02-10 1987-05-20 Energieversorgung Ingbetrieb Spruehduese zur bekaempfung von staub- glimmbraenden

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103987464A (zh) * 2011-09-15 2014-08-13 宝洁公司 用于分配流体的喷雾嘴和包括此类喷雾嘴的喷涂器
US12128118B2 (en) 2021-07-29 2024-10-29 The Procter & Gamble Company Aerosol dispenser containing a hairspray composition and a nitrogen propellant

Also Published As

Publication number Publication date
DE4440681A1 (de) 1996-05-30
DE4440681C2 (de) 1996-10-17
EP0801990B1 (fr) 2002-07-03
US6129154A (en) 2000-10-10

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