EP0126688B1 - Spray nozzle - Google Patents

Spray nozzle Download PDF

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Publication number
EP0126688B1
EP0126688B1 EP84400998A EP84400998A EP0126688B1 EP 0126688 B1 EP0126688 B1 EP 0126688B1 EP 84400998 A EP84400998 A EP 84400998A EP 84400998 A EP84400998 A EP 84400998A EP 0126688 B1 EP0126688 B1 EP 0126688B1
Authority
EP
European Patent Office
Prior art keywords
slots
plane
nozzle
fact
spray 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
Application number
EP84400998A
Other languages
German (de)
French (fr)
Other versions
EP0126688A1 (en
Inventor
Philippe Benoit
Alain Chielens
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.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to AT84400998T priority Critical patent/ATE21837T1/en
Publication of EP0126688A1 publication Critical patent/EP0126688A1/en
Application granted granted Critical
Publication of EP0126688B1 publication Critical patent/EP0126688B1/en
Expired 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like

Definitions

  • the present invention relates to atomization devices of the type in which the division of the fluid into fine droplets and the suspension of these in an air stream takes place inside the atomizer body and the mixing thus formed is expelled at high speed through an elongated opening formed in a nozzle with a hemispherical head so as to produce a flat jet of great width. These devices are used in particular for cooling continuous casting products.
  • the nozzle has a single slot producing a relatively thin jet.
  • the thickness of the jet can be increased by increasing the width of the slot, but the jet is then no longer homogeneous.
  • it is sought to obtain thicker and homogeneous jets over their entire section.
  • a nozzle for a sprinkler device comprising two slots arranged symmetrically with respect to a plane containing the axis of the nozzle and whose median planes are inclined relative to this plane of symmetry. These slots are arranged so as to produce two symmetrical jets watering two relatively narrow and diametrically opposite sectors. Such a nozzle does not produce a single homogeneous jet.
  • the object of the present invention is to provide a nozzle making it possible to obtain a wide, thick and homogeneous jet over its entire section.
  • the atomizing nozzle object of the invention comprises two slots arranged symmetrically with respect to a plane containing the axis of the nozzle and whose median planes are inclined relative to this plane of symmetry and is characterized in that the two slots are arranged so as to produce a common jet, in that the angle formed by the median plane of each slot with the plane of symmetry is between 5 ° and 40 ° and in that the two ends of the slots are located at the level from the base of the hemispherical head of the nozzle and away from said plane of symmetry.
  • the nozzles shown in the drawings are constituted by a part 10 in the shape of a glove finger comprising a hemispherical head 12 in which two slots are machined 14.
  • the part 10 At its base, the part 10 comprises an annular shoulder 16 allowing its fixing, by means of 'a nut, on the threaded end of the body of an atomizer. Lugs 18 ensure the correct positioning of the nozzle on the body of the atomizer.
  • the slots 14 are symmetrical with respect to a plane X-X containing the axis Y-Y of the nozzle. They have the shape of a semicircle and their ends are located approximately at the base of the hemispherical head 12 (plane Z.Z) and away from the plane of symmetry X-X.
  • the slots have parallel edges and their median planes are inclined at an angle a equal to about 20 ° relative to the plane of symmetry.
  • these slots In projection on a plane perpendicular to their median plane and to the plane of the figure (arrow F), these slots have an approximately trapezoidal shape, as shown in FIG. 3.
  • These slots are produced by milling using a saw mill or a cutter-three sizes on a universal milling machine with tilting head.
  • the slots which are arranged in the same way as on the nozzle of Figures 1 and 2 have a width which decreases from the ends towards the middle.
  • these slots In projection on a plane perpendicular to their median plane and to the plane of the figure (arrow F), these slots have the shape shown in FIG. 5, the longitudinal edges having in this representation a curved shape, for example in an arc of a circle.
  • the machining of these slots comprises two phases: first forming flat and parallel lip slots by milling, then giving the lips a curved shape by combination of an alternative cutting movement and a movement of advance circular.
  • these slots could be given a shape such that, shown as in FIG. 5, their longitudinal edges are constituted by broken lines with two segments (FIG. 6), three segments (FIG. 7) or more.
  • the slots are produced by milling, by means of a milling cutter, in two passes with rotation of the plane of the milling cutter between the two passes to produce the nozzle of FIG. 7, where the slots have a constant width in the area located halfway between the ends, a third pass is necessary to machine the middle part.
  • the inclination of the median plane of the slots relative to the plane of symmetry of the nozzle can vary from 5 ° to 40 °.

Landscapes

  • Nozzles (AREA)
  • Continuous Casting (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

1. Spray nozzle with hemispherical head comprising two slots (14) which are symmetrically arranged with respect to a plane (X-X) containing the axis (Y-Y) of the nozzle and the median planes of which are sloping with respect to the said symmetry plane, characterized by the fact that both slots (14) are arranged so as to produce a common stream, by the fact that the angle (alpha) formed by the median plane of each slot with the symmetry plane (X-X) lies between 5 degrees and 40 degrees, and by the fact that both ends of the slots (14) are located at the bottom level of the hemispherical head (12) of the nozzle and spaced from the said symmetry plane.

Description

La présente invention concerne les dispositifs d'atomisation du type dans lesquels la division du fluide en fines gouttelettes et la mise en suspension de celles-ci dans un courant d'air ont lieu à l'intérieur du corps de l'atomiseur et le mélange ainsi constitué est chassé à grande vitesse à travers une ouverture allongée ménagée dans une buse à tête hémisphérique de façon à produire un jet plat de grande largeur. Ces dispositifs sont notamment utilisés pour le refroidissement des produits de coulée continue.The present invention relates to atomization devices of the type in which the division of the fluid into fine droplets and the suspension of these in an air stream takes place inside the atomizer body and the mixing thus formed is expelled at high speed through an elongated opening formed in a nozzle with a hemispherical head so as to produce a flat jet of great width. These devices are used in particular for cooling continuous casting products.

Dans les dispositifs connus de ce type la buse comporte une seule fente produisant un jet relativement mince. On peut augmenter l'épaisseur du jet en augmentant la largeur de la fente, mais le jet n' est plus alors homogène. Or pour certaines applications, notamment pour le refroidissement de blooms produits par une machine de coulée continue, on cherche à obtenir des jets plus épais et homogènes sur toute leur section.In known devices of this type, the nozzle has a single slot producing a relatively thin jet. The thickness of the jet can be increased by increasing the width of the slot, but the jet is then no longer homogeneous. However, for certain applications, in particular for the cooling of blooms produced by a continuous casting machine, it is sought to obtain thicker and homogeneous jets over their entire section.

On connait aussi (FR-A-1.140.623) une buse pour un dispositif d'arrosage comportant deux fentes disposées symétriquement par rapport à un plan contenant l'axe de la buse et dont les plans médians sont inclinés par rapport à ce plan de symétrie. Ces fentes sont disposées de façon à produire deux jets symétriques arrosant deux secteurs relativement étroits et diamétralement opposés. Une telle buse ne permet pas de produire un jet unique homogène.There is also known (FR-A-1,140,623) a nozzle for a sprinkler device comprising two slots arranged symmetrically with respect to a plane containing the axis of the nozzle and whose median planes are inclined relative to this plane of symmetry. These slots are arranged so as to produce two symmetrical jets watering two relatively narrow and diametrically opposite sectors. Such a nozzle does not produce a single homogeneous jet.

Le but de la présente invention est de fournir une buse permettant d'obtenir un jet large, épais et homogène sur toute sa section.The object of the present invention is to provide a nozzle making it possible to obtain a wide, thick and homogeneous jet over its entire section.

La buse d'atomisation objet de l'invention comporte deux fentes disposées symétriquement par rapport à un plan contenant l'axe de la buse et dont les plans médians sont inclinés par rapport à ce plan de symétrie et est caractérisée en ce que les deux fentes sont disposées de façon à produire un jet commun, en ce que l'angle formé par le plan médian de chaque fente avec le plan de symétrie est compris entre 5° et 40° et en ce que les deux extrémités des fentes sont situées au niveau de la base de la tête hémisphérique de la buse et à l'écart dudit plan de symétrie.The atomizing nozzle object of the invention comprises two slots arranged symmetrically with respect to a plane containing the axis of the nozzle and whose median planes are inclined relative to this plane of symmetry and is characterized in that the two slots are arranged so as to produce a common jet, in that the angle formed by the median plane of each slot with the plane of symmetry is between 5 ° and 40 ° and in that the two ends of the slots are located at the level from the base of the hemispherical head of the nozzle and away from said plane of symmetry.

Différentes formes et dispositions peuvent être choisies pour les fentes, en fonction du résultat recherché.Different shapes and arrangements can be chosen for the slots, depending on the desired result.

La description qui suit se réfère aux dessins l'accompagnant qui montrent, à titre d'exemples non-limitatifs, quelques modes de réalisation de l'invention et sur lesquels:

  • La figure 1 est une vue en élévation d'une buse réalisée conformément à l'invention;
  • La figure 2 est une vue en bout de cette buse;
  • La figure 3 est une vue suivant la flèche F de la figure 1 montrant la forme des fentes de la buse;
  • La figure 4 est une vue en élévation d'une autre buse conforme à l'invention
  • La figure 5 est une vue suivant la flèche F de la figure 4, et
  • Les figures 6 et 7 sont des vues analogues à la figure 5 illustrant d'autres formes de fentes.
The following description refers to the accompanying drawings which show, by way of non-limiting examples, some embodiments of the invention and in which:
  • Figure 1 is an elevational view of a nozzle made in accordance with the invention;
  • Figure 2 is an end view of this nozzle;
  • Figure 3 is a view along arrow F of Figure 1 showing the shape of the slots of the nozzle;
  • Figure 4 is an elevational view of another nozzle according to the invention
  • FIG. 5 is a view along arrow F in FIG. 4, and
  • Figures 6 and 7 are views similar to Figure 5 illustrating other forms of slots.

Les buses représentées sur les dessins sont constituées par une pièce 10 en forme de doigt de gant comportant une tête hémisphérique 12 dans laquelle sont usinées deux fentes 14. A sa base, la pièce 10 comporte un épaulement annulaire 16 permettant sa fixation, au moyen d'un écrou, sur l'extrémité filetée du corps d'un atomiseur. Des ergots 18 permettent d'assurer le positionnement correct de la buse sur le corps de l'atomiseur.The nozzles shown in the drawings are constituted by a part 10 in the shape of a glove finger comprising a hemispherical head 12 in which two slots are machined 14. At its base, the part 10 comprises an annular shoulder 16 allowing its fixing, by means of 'a nut, on the threaded end of the body of an atomizer. Lugs 18 ensure the correct positioning of the nozzle on the body of the atomizer.

Les fentes 14 sont symétriques par rapport à un plan X-X contenant l'axe Y-Y de la buse. Elles ont la forme d'un demi-cercle et leurs extrémités sont situées approximativement au niveau de la base de la tête hémisphérique 12 (plan Z.Z) et à l'écart du plan de symétrie X-X.The slots 14 are symmetrical with respect to a plane X-X containing the axis Y-Y of the nozzle. They have the shape of a semicircle and their ends are located approximately at the base of the hemispherical head 12 (plane Z.Z) and away from the plane of symmetry X-X.

Dans le mode de réalisation des figures 1 et 2, les fentes ont des bords parallèles et leurs plans médians sont inclinés d'un angle a égal à environ 20° par rapport au plan de symétrie. En projection sur un plan perpendiculaire à leur plan médian et au plan de la figure (flèche F), ces fentes ont une forme approximativement trapézoïdale, comme représenté sur la figure 3. Ces fentes sont réalisées par fraisage au moyen d'une fraise-scie ou d'une fraise-trois tailles sur une fraiseuse universelle à tête inclinable.In the embodiment of Figures 1 and 2, the slots have parallel edges and their median planes are inclined at an angle a equal to about 20 ° relative to the plane of symmetry. In projection on a plane perpendicular to their median plane and to the plane of the figure (arrow F), these slots have an approximately trapezoidal shape, as shown in FIG. 3. These slots are produced by milling using a saw mill or a cutter-three sizes on a universal milling machine with tilting head.

Dans le mode de réalisation de la figure 4, les fentes qui sont disposées de la même façon que sur la buse des figures 1 et 2 ont une largeur qui décroit des extrémités vers le milieu. En projection sur un plan perpendiculaire à leur plan médian et au plan de la figure (flèche F) ces fentes ont la forme représentée sur la figure 5, les bords longitudinaux ayant dans cette représentation une forme courbe, par exemple en arc de cercle. L'usinage de ces fentes comprend deux phases: on forme d'abord des fentes à lèvres planes et parallèles par fraisage, puis on donne aux lèvres une forme courbe par combinaison d'un mouvement de coupe alternatif et d'un mouvement d'avance circulaire.In the embodiment of Figure 4, the slots which are arranged in the same way as on the nozzle of Figures 1 and 2 have a width which decreases from the ends towards the middle. In projection on a plane perpendicular to their median plane and to the plane of the figure (arrow F), these slots have the shape shown in FIG. 5, the longitudinal edges having in this representation a curved shape, for example in an arc of a circle. The machining of these slots comprises two phases: first forming flat and parallel lip slots by milling, then giving the lips a curved shape by combination of an alternative cutting movement and a movement of advance circular.

En variante on pourrait donner à ces fentes une forme telle que, représentées comme sur la figure 5, leurs bords longitudinaux soient constitués par des lignes brisées à deux segments (figure 6), trois segments (figure 7) ou plus.As a variant, these slots could be given a shape such that, shown as in FIG. 5, their longitudinal edges are constituted by broken lines with two segments (FIG. 6), three segments (FIG. 7) or more.

Dans l'exemple de la figure 6, les fentes sont réalisées par fraisage, au moyen d'une fraise-scie, en deux passes avec rotation du plan de la fraise entre les deux passes pour réaliser la buse de la figure 7, où les fentes ont une largeur constante dans la zone située à mi-distance des extremités, une troisième passe est nécessaire pour usiner la partie médiane.In the example of FIG. 6, the slots are produced by milling, by means of a milling cutter, in two passes with rotation of the plane of the milling cutter between the two passes to produce the nozzle of FIG. 7, where the slots have a constant width in the area located halfway between the ends, a third pass is necessary to machine the middle part.

L'inclinaison du plan médian des fentes par rapport au plan de symétrie de la buse peut varier de 5° à 40°.The inclination of the median plane of the slots relative to the plane of symmetry of the nozzle can vary from 5 ° to 40 °.

Claims (3)

1. Spray nozzle with hemispherical head comprising two slots (14) which are symmetrically arranged with respect to a plane (X-X) containing the axis (Y-Y) of the nozzle and the median planes of which are sloping with respect to the said symmetry plane, characterized by the fact that both slots (14) are arranged so as to produce a common stream, by the fact that the angle (a) formed by the median plane of each slot with the symmetry plane (X-X) lies between 5° and 40°, and by the fact that both ends of the slots (14) are located at the bottom level of the hemispherical head (12) of the nozzle and spaced from the said symmetry plane.
2. Spray nozzle according to claim 1, characterized by the fact that the said slots (14) have a constant width over their whole length.
3. Spray nozzle according to claim 1, characterized by the fact that the said slots (14) have a width which decreases from their ends to their middle or close to it.
EP84400998A 1983-05-20 1984-05-16 Spray nozzle Expired EP0126688B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400998T ATE21837T1 (en) 1983-05-20 1984-05-16 ATOMIZING NOZZLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8308407A FR2546080B1 (en) 1983-05-20 1983-05-20 ATOMIZATION NOZZLE
FR8308407 1983-05-20

Publications (2)

Publication Number Publication Date
EP0126688A1 EP0126688A1 (en) 1984-11-28
EP0126688B1 true EP0126688B1 (en) 1986-09-03

Family

ID=9289044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400998A Expired EP0126688B1 (en) 1983-05-20 1984-05-16 Spray nozzle

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EP (1) EP0126688B1 (en)
JP (1) JPS6037252A (en)
AT (1) ATE21837T1 (en)
DE (1) DE3460609D1 (en)
FR (1) FR2546080B1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0685895B2 (en) * 1986-03-06 1994-11-02 小野田セメント株式会社 Gun head for powder coating
US4830279A (en) * 1987-09-21 1989-05-16 Nordson Corporation Flat spray nozzle for a spray gun
JPH0221955A (en) * 1988-07-07 1990-01-24 Nippon Steel Corp Fluid injection nozzle
US6012652A (en) * 1998-01-30 2000-01-11 Mobil Oil Corporation Atomizing nozzle and method of use thereof
DE102006012373B3 (en) * 2006-03-17 2007-06-28 Bayerische Motoren Werke Ag Sound proof material application nozzle for motor vehicle, has outlet opening with two parallel slit-shaped openings of different lengths, where slit-shaped openings run parallel to one another
DE102006055112A1 (en) * 2006-11-21 2008-05-29 Billhöfer Maschinenfabrik GmbH & Co. KG Apparatus for coating a welded or glued seam of a container, associated method and container produced by this method
JP4936904B2 (en) * 2007-01-05 2012-05-23 株式会社共立合金製作所 Injection nozzle and spraying method using the same
DE102015207741A1 (en) * 2015-04-28 2016-11-03 Lechler Gmbh spray nozzle
CN105618284A (en) * 2016-02-27 2016-06-01 柳州市够旺贸易有限公司 Combined water film injector head
CN105689163A (en) * 2016-02-27 2016-06-22 柳州市够旺贸易有限公司 Spherical water film injection head
CN105618283A (en) * 2016-02-27 2016-06-01 柳州市够旺贸易有限公司 Spherical water film injection pipe fitting
CN105728231A (en) * 2016-02-27 2016-07-06 柳州市够旺贸易有限公司 Combined water film spraying pipe
CN108942086A (en) * 2017-05-17 2018-12-07 上海梅山钢铁股份有限公司 Continuous casting cooling nozzles processing method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE627597C (en) * 1936-03-19 Max Kerschenlohr Spray nozzles, in particular for fire extinguishing purposes
US1753443A (en) * 1927-05-31 1930-04-08 John D Murray Tip for spraying nozzles
US2896865A (en) * 1953-04-28 1959-07-28 W L Hamilton & Company Spray head
FR1140623A (en) * 1956-01-27 1957-07-31 Improvements to sprinklers under water pressure, like sprinklers

Also Published As

Publication number Publication date
DE3460609D1 (en) 1986-10-09
FR2546080B1 (en) 1987-02-13
ATE21837T1 (en) 1986-09-15
EP0126688A1 (en) 1984-11-28
FR2546080A1 (en) 1984-11-23
JPS6037252A (en) 1985-02-26

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