EP1543882B1 - Nozzle for a conical jet - Google Patents

Nozzle for a conical jet Download PDF

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Publication number
EP1543882B1
EP1543882B1 EP04027028A EP04027028A EP1543882B1 EP 1543882 B1 EP1543882 B1 EP 1543882B1 EP 04027028 A EP04027028 A EP 04027028A EP 04027028 A EP04027028 A EP 04027028A EP 1543882 B1 EP1543882 B1 EP 1543882B1
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EP
European Patent Office
Prior art keywords
swirl chamber
conical
swirl
end wall
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.)
Not-in-force
Application number
EP04027028A
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German (de)
French (fr)
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EP1543882A3 (en
EP1543882A2 (en
Inventor
Albert Fecht
Lars Vater
Jürgen Frick
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Lechler GmbH
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Lechler GmbH
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Publication date
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Publication of EP1543882A2 publication Critical patent/EP1543882A2/en
Publication of EP1543882A3 publication Critical patent/EP1543882A3/en
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Publication of EP1543882B1 publication Critical patent/EP1543882B1/en
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    • 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
    • B05B1/3426—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 emerging in the swirl chamber perpendicularly to the outlet axis

Definitions

  • the invention relates to a conical nozzle having a nozzle body with a swirl space, an inlet bore arranged in a side wall of the swirl space, and an outlet bore arranged in a first end wall of the swirl space.
  • a supply line is aligned with an inlet bore, which opens tangentially into a circular cylindrical swirl space.
  • a lid of the swirl space has a plurality of protrusions to influence a circulation speed of the flow in the nozzle.
  • a spray-drying nozzle which has a circular-cylindrical swirl space, wherein an inlet bore opens into the peripheral wall of the swirl space.
  • An exit bore is arranged in a first end wall of the swirl space.
  • the swirl space is surrounded by an annulus via which the inlet bore is fed with medium to be sprayed.
  • the annulus is fed via an axial connection.
  • an adjustable scattering nozzle in which liquid to be sprayed is introduced tangentially into a swirling space.
  • a spraying direction is perpendicular to a connection direction in which a connection flange is aligned and onto which a supply line is screwed.
  • the swirl space is conically tapered in the direction of an outlet opening and into the swirl space extends into a conical projection which is provided with two circumferential grooves on its circumference.
  • the conical projection is partially against an inner wall of the likewise conical swirl space, so that two closed flow channels are formed by means of the two circumferential grooves on the projection, which must inevitably pass through the liquid flowing into the swirl space.
  • the European disclosure EP 0 561 697 A1 shows a spray nozzle with a conically tapered swirl space into which a matching, also cone-shaped insert is inserted.
  • the conical insert has a circumferential groove tapering towards the cone tip. The conical insert abuts in sections on an inner wall of the swirl space, so that liquid fed into the nozzle must forcibly pass through the closed flow channel formed by the groove on the conical insert and the inner wall of the swirl space.
  • the British patent GB 1 362 317 describes a fluid nozzle intended for use in public showers.
  • the nozzle mouthpiece has a cylindrical swirl space, is fed into the liquid tangentially.
  • a two-stage, cone-shaped extension of the outlet bore is provided.
  • a first conical region, which adjoins the swirl chamber, has a first cone angle
  • the second conical region adjoining the first conical region has a smaller cone angle than the first conical region.
  • the second cone area is additionally provided with longitudinal grooves provided in the spraying direction on its inner wall.
  • a conical nozzle with a nozzle body having a swirl space, an inlet bore arranged in a side wall of the swirl space and an outlet bore arranged in a first end wall of the swirl space is provided for this purpose, in which a rotationally symmetrical projection or projection is provided on a second end wall of the swirl space opposite the first end wall is arranged rotationally symmetrical recess and in which in the first end wall at least two blind holes are arranged adjacent to the outlet bore.
  • Both the rotationally symmetrical projection or the rotationally symmetrical recess in the second end wall and the blind holes in the first end wall can be produced in a relatively simple manner.
  • the first end wall is conical and tapers in the direction of the outlet bore.
  • the invention provides a particularly advantageous and easily manufactured nozzle for producing a full cone jet.
  • annular space communicating with the inlet bore and surrounding the nozzle body in the area of the inlet bore is provided.
  • the nozzle according to the invention has the advantages of a little congestion-sensitive conical nozzle with lateral connection, since no internals must be provided within the swirl space, which favor a blockage. Nevertheless, the conical nozzle according to the invention can be connected axially and thus requires only a relatively small installation space.
  • the conical nozzle according to the invention is characterized in a special way suitable for use in the secondary cooling of billet casting plants. In particular, the conical nozzle according to the invention can be replaced by a simple adapter against conventional axial full-cone nozzles.
  • the projection is circular-cylindrical.
  • Such a design of the projection is, for example, as a turned part, easy to produce.
  • a ratio of the size of the inlet bore to the size of the outlet bore may be between about 1: 1 to a maximum of 1: 1.5 in the conical nozzle according to the invention.
  • the ratio of the size of the inlet bore to the swirl diameter can be greater than 1: 1.5 and a ratio of the inlet bore to the annular gap of the inlet can be 1: x, x> 1.
  • the at least two blind holes are circular-cylindrical.
  • the at least two blind holes in the region of the outlet bore merge into one another.
  • the center axes of the blind holes and the outlet holes lie in a common plane.
  • an eight-shaped recess is formed in the end wall, in the center of which the outlet bore is arranged. This creates an outflow area that ensures the creation of a uniform spray pattern.
  • a respective peripheral wall of the at least two blind holes is aligned in the region of a cutting line with the peripheral wall of the swirl chamber, wherein the section line through the intersection of a plane passing through the center axes of the respective blind bore and the swirl chamber level with the peripheral wall of the swirl chamber and the peripheral wall of the respective Blind hole is defined.
  • a groove or a projection may be arranged on the tapered projection.
  • the conical nozzle according to the invention can have a circular-cylindrical swirl chamber with rotationally symmetrical and, in particular, planar end walls and is thereby easy to produce, at least in the region of the swirl chamber. Due to the tapered projection on the second end wall, a desired rotational speed of the flow in the swirl chamber is set.
  • annular space communicating with the inlet bore and surrounding the nozzle body in the area of the inlet bore is provided.
  • the conical nozzle according to the invention can be used for an axial connection.
  • the flow guide surface is configured as a groove running around the conical projection several times and inclined to a central longitudinal axis of the conical projection.
  • a circulating flow velocity can be adjusted in the swirl space, whereby the spray pattern of the conical nozzle according to the invention can be influenced.
  • Such a conical nozzle is particularly insensitive to contamination, since the exit bore expands starting from the swirl space and thus the swirl space itself can not become clogged.
  • the swirl space can be formed, for example, circular cylindrical.
  • annular space communicating with the inlet bore and surrounding the nozzle body in the area of the inlet bore is provided.
  • the conical nozzle according to the invention is suitable for an axial connection.
  • the nozzle body is integrally formed.
  • the conical nozzle according to the invention Since the outlet bore widens conically starting from the swirl space, the conical nozzle according to the invention has no undercut between the outlet bore and the swirl space and can therefore be inexpensively manufactured as a one-piece component.
  • FIG. 1 shows a full cone nozzle with axial connection with a nozzle body 10 and the nozzle body 10 partially surrounding connector 12.
  • the nozzle body 10 is constructed in two parts and has a nozzle mouthpiece 14 and a swirl chamber cover 16.
  • a swirl space 18 is provided, and in a first end wall of the swirl space 18, an outlet bore 20 is arranged.
  • a second, the first end wall opposite end wall of the swirl chamber 18 is formed by the swirl chamber cover 16.
  • the swirl chamber 18 is formed circular-cylindrical and an inlet bore 22 opens in the region of the side wall of the swirl chamber 18 in the swirl chamber 18.
  • the inlet bore 22 is in the view of Fig. 1 in and of itself not recognizable and therefore shown only dashed.
  • the nozzle mouthpiece 14 has at its front end in the region of the outlet bore 20 to a circumferential annular flange, on which a region with a reduced outer diameter and an external thread 24 connects.
  • the region with the external thread 24 is adjoined by an area with an even further reduced diameter, in which the inlet bore 22 is then arranged.
  • the nozzle mouthpiece 14 is thus stepped. With the external thread 24, the nozzle tip 14 is screwed into a front end of the fitting 12 and the annular flange of the nozzle tip 14 abuts an end face of the fitting 12 and thereby defines an installation position of the nozzle tip 14.
  • the fitting 12 has an axial starting from its front end Bore 26 which carries in its front region an internal thread which engages with the external thread 24 of the nozzle orifice 14.
  • An inner diameter of the axial bore 26 is larger than an outer diameter of the region of the nozzle orifice 14 in which the inlet bore 22 is arranged.
  • the inner diameter of the axial bore 26 is also larger than an outer diameter of the swirl chamber cover 16. Between the nozzle orifice 14 and the connecting piece 12, this results in the region of the inlet bore 22 an annular space. This annular space continues from the inlet bore 22 to the rear end of the swirl chamber cover 16.
  • the connecting piece 12 can thus be screwed axially onto a pipeline and requires only a small installation space in the radial direction.
  • the conical nozzle according to the invention still requires no blockage-prone swirl inserts, as provided in conventional axial full cone nozzles.
  • the free cross sections of the conical nozzle according to the invention are characterized by about 50% to 60% above the free cross sections of conventional axial full cone nozzles.
  • the conical nozzles according to the invention are thus much less susceptible to blockage than conventional axial full cone nozzles. Compared to conventional full cone nozzles with tangential connection, the conical nozzles according to the invention require a considerably smaller installation space.
  • a satisfactory spray pattern including a desired velocity distribution in a full cone produced by the nozzle according to the invention is adjusted firstly via a ratio of the size of the inlet bore 22 to the size of the outlet bore 20, which may be in a range from 1: 1 to at most 1: 1.5 ,
  • a ratio of the inlet bore to the swirl diameter should be considered, which can be greater than about 1: 1.5.
  • a size of the inlet bore to the size of the annular gap between the connector 12 and the nozzle body 14 may be 1: 1, but the annular gap can also be made larger than the inlet bore.
  • the arrangement of the inlet bore 22 relative to a central axis 28 of the swirl chamber 18 of importance, which will be explained below.
  • the swirl chamber cover 16 has at its, the swirl chamber 18 side facing a circular cylindrical Projection 30 which is arranged concentrically to the central axis 28.
  • the first end wall of the swirl space 18, which merges into the outlet bore 20, is tapered on the one hand and tapering in the direction of the outlet bore 20 and, moreover, two blind holes 32 are arranged in the first end wall, which will be explained in more detail below.
  • FIG. 2 shows the swirl chamber lid 16 of Fig. 1 ,
  • the swirl chamber cover 16 is provided with the circular cylindrical projection 30, which extends from a flat end face 34.
  • a circular cylindrical section with an external thread 36 connects to the end face 34.
  • Adjoining the external thread 36 is an annular sealing flange 38, which is followed by an outer circumferential region 40 designed in the manner of a hexagonal surface.
  • FIG. 3 shows an alternative swirl chamber cover 42.
  • the swirl chamber cover 42 differs from the swirl chamber cover 16 by the design of one, the swirl chamber 18 facing end surface 44, which forms the second, the outlet bore 20 opposite end wall of the swirl chamber 18.
  • the end face 44 is curved outwardly and thereby protrudes in the mounted state in the swirl chamber 18.
  • swirl chamber cover 46 differs from the swirl chamber cover 16 only by the design of its, in the assembled state the swirl chamber 18 facing end face 48.
  • the end face 48 is curved inwardly, so that created by the end face 48 a recess in the swirl chamber cover 46 becomes. In the assembled state, this depression thus expands the swirl space 18 in a direction away from the exit bore 20.
  • FIG. 5 shows the nozzle mouthpiece 14 of Fig. 1 in a view from diagonally behind. It can be seen that the inlet bore 22 is arranged off-center, so that the medium to be sprayed is introduced through the inlet bore 22 into the swirl chamber 18 such that a circulating flow is generated in the swirl chamber 18. Furthermore, it can be seen that the circumference of the first portion of the nozzle orifice 14, which is located on the side of the outlet bore 20, is multi-surface and designed in the manner of a hexagon nut, in order to screw the nozzle orifice 14 in the in Fig. 1 To allow shown connector 12.
  • FIG. 6 shows the nozzle mouthpiece 14 of Fig. 1 , where in the view of Fig. 6 on and for themselves unrecognizable elements are shown only in dashed lines.
  • the inlet bore 22 which is shown in dashed lines and the eccentric position of the swirl chamber 18 is clearly visible.
  • the inlet bore 22 opens into the swirl chamber 18 in such a way that a flow, although not eccentrically introduced, is not yet introduced tangentially into the circulation chamber 18.
  • the two blind holes 32 in the first end wall adjacent to the outlet bore 20 are arranged.
  • the two blind holes 32 are circular cylindrical, have the same dimensions and their central axes and the central axis of the outlet bore 20 lie in a common plane.
  • the blind holes 32 each have the inner circumferential wall of the swirling space 18 and overlap in the region of the outlet bore 20. Overall, an eight-shaped recess is formed by the two blind holes 32 in the first end wall of the swirl space 18, wherein the outlet bore 20 is arranged in the center of this eight-shaped recess of the two blind holes 32.
  • the two blind holes 32 serve to influence the rotational speed of the flow in the swirl space 18 and to form an exclusion area in the vicinity of the outlet bore 20.
  • Fig. 6 In the sectional view of Fig. 7 along the line XX the Fig. 6 is one of the blind holes 32 and their arrangement to the outlet bore 20 can be seen.
  • first end wall 50 of the swirl space 18 is conical and tapers in the direction of the outlet bore 20.
  • Circumferentially around the outlet bore 20 is in the, the swirl space 18 facing away from the end face of the nozzle mouthpiece 14, a circumferential and triangular in cross-section recess 52 is provided.
  • FIG. 9 shows a further preferred embodiment of the conical nozzle according to the invention for producing a full cone spray pattern, where in the representation of Fig. 9 only a nozzle orifice 54 is shown.
  • the nozzle mouthpiece 54 is intended for installation in a connection piece which is the connection piece 12 of the Fig. 1 equivalent.
  • a circular-cylindrical swirl space 56 without cross-sectional constriction merges into an outlet bore 58.
  • the outlet bore 58 widens conically, with a first conical region 60 being provided with a first conical angle relative to the circumferential wall of the swirling space 56 and a second conical region adjoining the first region 60, the second conical region 62 being opposite the circumferential wall the swirl space 56 occupies a larger angle. Accordingly, the outlet bore 58 widens in two stages starting from the swirl space 56 through the conical areas 60, 62.
  • An inlet bore 64 which is arranged centrally to the swirl space 56, opens into the circumferential wall of the swirl space 56, so that the center axes of the inlet bore 64 and the swirl space 56 intersect , One, the outlet bore 58 opposite the second end wall of the swirl chamber 56 is flat.
  • the nozzle mouthpiece 54 thereby has a particularly simple shape, which is very little susceptible to clogging.
  • a significant advantage of the nozzle tip 54 is that it can be made in one piece.
  • the nozzle mouthpiece 54 may be in the in the Fig. 1 be screwed shown connector.
  • FIG. 10 shows a swirl chamber cover 66, which is intended for insertion into a nozzle orifice 68, which in sectional view in the Fig. 11 is shown.
  • the swirl chamber cover 66 has on its, a swirl space 70 of the nozzle mouthpiece 68 facing end face on a conical projection 72 which has two parallel circumferential grooves 74 and 76 on a portion of its circumference.
  • An extension direction of the grooves 74, 76 is inclined with respect to a central axis 78 of the swirl chamber cover 66.
  • the cone-like Projection 72 with the grooves 74, 76 provides an adjustment of the rotational speed in the swirl chamber 70 to a level that makes a desired spray pattern possible.
  • an inlet bore 80 opens off-center into the swirl space 70, so that a circulating in the swirl space 70 flow is generated, the rotational speed is then controlled by the projection 72 of the swirl chamber cover 66.
  • the nozzle orifice 68 is intended for an axial full cone nozzle and is screwed into a fitting which corresponds to that in the Fig. 1 shown connector 12 corresponds.

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  • Nozzles (AREA)
  • Continuous Casting (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Stored Programmes (AREA)
  • Light Receiving Elements (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The conical nozzle has a nozzle component (10) with a swirl chamber (18), a feed bore (22) in one wall of the swirl chamber, and an outlet bore (20) in a first end wall of the swirl chamber. An axially symmetrical protrusion (30) or recess is provided on a second end wall of the swirl chamber, and at least two blind holes (32) are located in the first end wall adjacent to the outlet bore. An encompassing annular chamber in communication with the feed bore and nozzle component is provided in the region of the feed bore.

Description

Die Erfindung betrifft eine Kegeldüse mit einem Düsenkörper mit einem Drallraum, einer in einer Seitenwandung des Drallraums angeordneten Zulaufbohrung und einer in einer ersten Stirnwand des Drallraums angeordneten Austrittsbohrung.The invention relates to a conical nozzle having a nozzle body with a swirl space, an inlet bore arranged in a side wall of the swirl space, and an outlet bore arranged in a first end wall of the swirl space.

Aus der deutschen Patentschrift DE 199 48 939 C1 ist eine Vollkegeldüse mit axialem Anschluss bekannt. Diese Vollkegeldüse weist einen Düsenkörper mit einem Drallraum auf, in den eine tangential zur Drallraumwandung angeordnete Zulaufbohrung mündet. In einer ersten Stirnwand des Drallraums ist eine Austrittsbohrung angeordnet, die einen sich ausgehend von Drallraum zunächst verjüngenden und dann wieder kegelförmig erweiternden Querschnitt aufweist. An einer, der Austrittsbohrung gegenüberliegenden Stirnwand des Drallraums ist ein trichterförmiger Boden mit mehreren Taschen vorgesehen. Die Taschen bilden eine Profilanordnung, die die Umlaufströmung beeinflusst. Die Taschen sind vorzugsweise nach Art eines fünfzackigen Sterns angeordnet. Zu verspritzendes Medium wird der Zulaufbohrung über einen Speisekanal zugeführt, der ausgehend von der Zulaufbohrung sich zunächst parallel zum Umfang der Drallkammer erstreckt und im weiteren Verlauf rechtwinklig abbiegt und dann in axialer Richtung weiterläuft.From the German patent DE 199 48 939 C1 is a full cone nozzle with axial connection known. This full-cone nozzle has a nozzle body with a swirl space into which an inlet bore arranged tangentially to the swirl space wall opens. In a first end wall of the swirl space, an outlet bore is arranged, which has a cross-section initially tapering from swirl space and then widening again conically. At one, the exit hole opposite end wall of the swirl space a funnel-shaped bottom is provided with a plurality of pockets. The pockets form a profile arrangement that influences the circulation flow. The pockets are preferably arranged in the manner of a five-pointed star. To be sprayed medium is fed to the inlet bore via a feed channel, starting from the inlet bore initially extends parallel to the circumference of the swirl chamber and in the further course turns at right angles and then continues in the axial direction.

Aus der deutschen Patentschrift DE 27 00 028 C2 ist eine Vollkegeldüse mit axialen Anschluss bekannt, bei der innerhalb einer Drallkammer ein Drallkörper mit mehreren Flügeln oder Leitorganen angeordnet ist.From the German patent DE 27 00 028 C2 is a full cone nozzle with axial connection is known in which a swirl body is arranged with a plurality of vanes or guide elements within a swirl chamber.

Eine weitere Vollkegeldüse mit axialem Anschluss ist aus der europäischen Offenlegungsschrift EP 0 350 250 bekannt. Dort sind innerhalb eines Drallraums zwei propellerartige Drallkörper angeordnet.Another Vollkepfüse with axial connection is from the European patent application EP 0 350 250 known. There, two propeller-like swirl bodies are arranged within a swirl space.

Aus der deutschen Patentschrift DE 21 23 519 ist eine Vollkegeldüse mit seitlichem Anschluss bekannt. Eine Zulaufleitung mündet dort unmittelbar in eine tangential zu einer Drallkammer angeordnete Zulaufbohrung. Zwischen der Versorgungsleitung und der Zulaufbohrung findet ein lediglich geringfügiger Richtungswechsel statt. Am Boden der Drallkammer ist eine Platte mit mehreren Öffnungen zur Beeinflussung des Sprühbilds angeordnet.From the German patent DE 21 23 519 is a full cone nozzle with lateral connection known. A supply line opens there directly into a tangent to a swirl chamber arranged inlet bore. Between the supply line and the inlet bore takes place only a minor change of direction. At the bottom of the swirl chamber a plate having a plurality of openings for influencing the spray pattern is arranged.

Eine weitere Vollkegeldüse mit seitlichem Anschluss ist aus der deutschen Offenlegungsschrift DE 30 24 472 A1 bekannt. Eine Versorgungsleitung fluchtet mit einer Zulaufbohrung, die tangential in einen kreiszylindrischen Drallraum mündet. Ein Deckel des Drallraums weist mehrere Vorsprünge auf, um eine Umlaufgeschwindigkeit der Strömung in der Düse zu beeinflussen.Another full cone nozzle with lateral connection is from the German patent application DE 30 24 472 A1 known. A supply line is aligned with an inlet bore, which opens tangentially into a circular cylindrical swirl space. A lid of the swirl space has a plurality of protrusions to influence a circulation speed of the flow in the nozzle.

Aus der deutschen Patentschrift DE 197 53 489 C1 ist eine Sprühtrocknungsdüse bekannt, die einen kreiszylindrischen Drallraum aufweist, wobei in die Umfangswandung des Drallraums eine Zulaufbohrung mündet. Eine Austrittsbohrung ist in einer ersten Stirnwand des Drallraums angeordnet. Der Drallraum ist von einem Ringraum umgeben, über den die Zulaufbohrung mit zu verspritzendem Medium gespeist wird. Der Ringraum wird über einen Axialanschluss gespeist.From the German patent DE 197 53 489 C1 a spray-drying nozzle is known which has a circular-cylindrical swirl space, wherein an inlet bore opens into the peripheral wall of the swirl space. An exit bore is arranged in a first end wall of the swirl space. The swirl space is surrounded by an annulus via which the inlet bore is fed with medium to be sprayed. The annulus is fed via an axial connection.

Aus der deutschen Patentschrift DE 301 230 ist eine verstellbare Streudüse bekannt, bei der zu versprühende Flüssigkeit tangential in einen Drallraum eingeleitet wird. Eine Sprührichtung liegt senkrecht zu einer Anschlussrichtung, in der ein Anschlussflansch ausgerichtet ist und auf den eine Zuführleitung aufgeschraubt wird. Der Drallraum ist kegelförmig verjüngt in Richtung auf eine Austrittsöffnung zu ausgebildet und in den Drallraum hinein erstreckt sich ein kegelartiger Vorsprung, der mit zwei umlaufenden Nuten an seinem Umfang versehen ist. Der kegelartige Vorsprung liegt teilweise an einer Innenwandung des ebenfalls kegelförmigen Drallraums an, so dass mittels der beiden am Vorsprung umlaufenden Nuten zwei geschlossene Strömungskanäle gebildet sind, die die in den Drallraum einströmende Flüssigkeit zwangsläufig passieren muss.From the German patent DE 301 230 an adjustable scattering nozzle is known in which liquid to be sprayed is introduced tangentially into a swirling space. A spraying direction is perpendicular to a connection direction in which a connection flange is aligned and onto which a supply line is screwed. The swirl space is conically tapered in the direction of an outlet opening and into the swirl space extends into a conical projection which is provided with two circumferential grooves on its circumference. The conical projection is partially against an inner wall of the likewise conical swirl space, so that two closed flow channels are formed by means of the two circumferential grooves on the projection, which must inevitably pass through the liquid flowing into the swirl space.

Die europäische Offenlegungsschrift EP 0 561 697 A1 zeigt eine Sprühdüse mit einem sich kegelartig verjüngenden Drallraum, in den ein passender, ebenfalls kegelförmiger Einsatz eingeschoben ist. Der kegelförmige Einsatz weist eine auf die Kegelspitze zulaufende Umfangsnut auf. Der kegelförmige Einsatz liegt abschnittsweise an einer Innenwandung des Drallraums an, so dass in die Düse eingespeiste Flüssigkeit zwangsweise den durch die Nut am kegelförmigen Einsatz und die Innenwandung des Drallraums gebildeten geschlossenen Strömungskanal passieren muss.The European disclosure EP 0 561 697 A1 shows a spray nozzle with a conically tapered swirl space into which a matching, also cone-shaped insert is inserted. The conical insert has a circumferential groove tapering towards the cone tip. The conical insert abuts in sections on an inner wall of the swirl space, so that liquid fed into the nozzle must forcibly pass through the closed flow channel formed by the groove on the conical insert and the inner wall of the swirl space.

Die britische Patentschrift GB 1 362 317 beschreibt eine Flüssigkeitsdüse, die zur Verwendung in öffentlichen Duschen vorgesehen ist. Das Düsenmundstück weist einen zylindrischen Drallraum auf, in den Flüssigkeit tangential eingespeist wird. Ausgehend vom Drallraum ist eine zweistufige, kegelförmige Erweiterung der Austrittsbohrung vorgesehen. Ein erster Kegelbereich, der sich an die Drallkammer anschließt, weist einen ersten Kegelwinkel auf und der sich an den ersten Kegelbereich anschließende zweite Kegelbereich weist einen gegenüber dem ersten Kegelbereich kleineren Kegelwinkel auf. Der zweite Kegelbereich ist zusätzlich mit in Sprührichtung versehenen Längsnuten an seiner Innenwandung versehen.The British patent GB 1 362 317 describes a fluid nozzle intended for use in public showers. The nozzle mouthpiece has a cylindrical swirl space, is fed into the liquid tangentially. Starting from the swirl space a two-stage, cone-shaped extension of the outlet bore is provided. A first conical region, which adjoins the swirl chamber, has a first cone angle, and the second conical region adjoining the first conical region has a smaller cone angle than the first conical region. The second cone area is additionally provided with longitudinal grooves provided in the spraying direction on its inner wall.

Mit der Erfindung soll eine für einen Axialanschluss geeignete und einfach herstellbare Kegeldüse geschaffen werden.With the invention, a suitable for an axial connection and easy to produce cone nozzle to be created.

Erfindungsgemäß ist hierzu eine Kegeldüse mit einem Düsenkörper mit einem Drallraum, einer in einer Seitenwandung des Drallraums angeordneten Zulaufbohrung und einer in einer ersten Stirnwand des Drallraums angeordneten Austrittsbohrung vorgesehen, bei der an einer zweiten, der ersten Stirnwand gegenüberliegenden Stirnwand des Drallraums ein rotationssymmetrischer Vorsprung oder eine rotationssymmetrische Ausnehmung angeordnet ist und bei der in der ersten Stirnwand benachbart zur Austrittsbohrung wenigstens zwei Sackbohrungen angeordnet sind.According to the invention, a conical nozzle with a nozzle body having a swirl space, an inlet bore arranged in a side wall of the swirl space and an outlet bore arranged in a first end wall of the swirl space is provided for this purpose, in which a rotationally symmetrical projection or projection is provided on a second end wall of the swirl space opposite the first end wall is arranged rotationally symmetrical recess and in which in the first end wall at least two blind holes are arranged adjacent to the outlet bore.

Sowohl der rotationssymmetrische Vorsprung oder die rotationssymmetrische Ausnehmung in der zweiten Stirnwand sowie die Sackbohrungen in der ersten Stirnwand lassen sich in verhältnismäßig einfacher Weise herstellen. Vorteilhafterweise ist die erste Stirnwand kegelförmig ausgebildet und verjüngt sich in Richtung der Austrittsbohrung. Durch die Erfindung wird eine besonders vorteilhafte und einfach herstellbare Düse zur Erzeugung eines Vollkegelstrahls bereitgestellt. Es sind wenigstens zwei Sackbohrungen vorzusehen, die vorzugsweise identische Abmessungen aufweisen, es können aber auch drei oder vier Sackbohrungen vorgesehen sein.Both the rotationally symmetrical projection or the rotationally symmetrical recess in the second end wall and the blind holes in the first end wall can be produced in a relatively simple manner. Advantageously, the first end wall is conical and tapers in the direction of the outlet bore. The invention provides a particularly advantageous and easily manufactured nozzle for producing a full cone jet. There are at least two blind holes provided, which preferably have identical dimensions, but it can also be provided three or four blind holes.

In Weiterbildung der Erfindung ist ein mit der Zulaufbohrung in Verbindung stehender und den Düsenkörper im Bereich der Zulaufbohrung umgebender Ringraum vorgesehen.In a development of the invention, an annular space communicating with the inlet bore and surrounding the nozzle body in the area of the inlet bore is provided.

Auf diese Weise wird ein Axialanschluss der erfindungsgemäßen Kegeldüse ermöglicht. Die erfindungsgemäße Düse hat dadurch die Vorteile einer wenig verstopfungsempfindlichen Kegeldüse mit seitlichem Anschluss, da innerhalb des Drallraums keinerlei Einbauten vorgesehen werden müssen, die eine Verstopfung begünstigen. Dennoch kann die erfindungsgemäße Kegeldüse axial angeschlossen werden und benötigt dadurch lediglich einen relativ geringen Einbauraum. Die erfindungsgemäße Kegeldüse ist dadurch in besonderer Weise für den Einsatz bei der Sekundärkühlung von Knüppelstranggussanlagen geeignet. Insbesondere lässt sich die erfindungsgemäße Kegeldüse mittels eines einfachen Adapters gegen konventionelle Axial-Vollkegeldüsen austauschen.In this way, an axial connection of the conical nozzle according to the invention is made possible. The nozzle according to the invention has the advantages of a little congestion-sensitive conical nozzle with lateral connection, since no internals must be provided within the swirl space, which favor a blockage. Nevertheless, the conical nozzle according to the invention can be connected axially and thus requires only a relatively small installation space. The conical nozzle according to the invention is characterized in a special way suitable for use in the secondary cooling of billet casting plants. In particular, the conical nozzle according to the invention can be replaced by a simple adapter against conventional axial full-cone nozzles.

In Weiterbildung der Erfindung ist der Vorsprung kreiszylindrisch ausgebildet.In a further development of the invention, the projection is circular-cylindrical.

Eine solche Ausbildung des Vorsprunges ist, beispielsweise als Drehteil, einfach herstellbar.Such a design of the projection is, for example, as a turned part, easy to produce.

Ein Verhältnis der Größe der Zulaufbohrung zur Größe der Austrittsbohrung kann bei der erfindungsgemäßen Kegeldüse zwischen etwa 1:1 bis maximal 1:1,5 liegen. Das Verhältnis der Größe der Zulaufbohrung zum Drallraumdurchmesser kann größer als 1:1,5 sein und ein Verhältnis der Zulaufbohrung zum Ringspalt des Zulaufs kann bei 1:x, x>1 liegen.A ratio of the size of the inlet bore to the size of the outlet bore may be between about 1: 1 to a maximum of 1: 1.5 in the conical nozzle according to the invention. The ratio of the size of the inlet bore to the swirl diameter can be greater than 1: 1.5 and a ratio of the inlet bore to the annular gap of the inlet can be 1: x, x> 1.

In Weiterbildung der Erfindung sind die wenigstens zwei Sackbohrungen kreiszylindrisch ausgebildet.In a further development of the invention, the at least two blind holes are circular-cylindrical.

Auf diese Weise lässt sich eine einfach herstellbare Ausführung der erfindungsgemäßen Kegeldüse erreichen.In this way, an easily manufactured embodiment of the conical nozzle according to the invention can be achieved.

In Weiterbildung der Erfindung gehen die wenigstens zwei Sackbohrungen im Bereich der Austrittsbohrung ineinander über.In a further development of the invention, the at least two blind holes in the region of the outlet bore merge into one another.

Dadurch wird auf einfache Weise ein Ausflussbereich im Übergangsbereich der Sackbohrungen geschaffen, der in die Austrittsbohrung mündet. Eine solche Gestaltung ist besonders vorteilhaft in Verbindung mit einer kegelförmigen Stirnwand, die sich in Richtung des offenen Endes der Austrittsbohrung hin verjüngt.As a result, an outflow region in the transition region of the blind bores is created in a simple manner, which opens into the outlet bore. Such a configuration is particularly advantageous in connection with a conical end wall, which tapers in the direction of the open end of the outlet bore.

In Weiterbildung der Erfindung liegen die Mittelachsen der Sackbohrungen und der Austrittsbohrungen in einer gemeinsamen Ebene.In a further development of the invention, the center axes of the blind holes and the outlet holes lie in a common plane.

Auf diese Weise ist in der Stirnwand eine achtförmige Ausnehmung gebildet, in deren Mittelpunkt die Austrittsbohrung angeordnet ist. Dadurch wird ein Ausflussbereich geschaffen, der die Erzeugung eines gleichmäßigen Sprühbildes sicherstellt.In this way, an eight-shaped recess is formed in the end wall, in the center of which the outlet bore is arranged. This creates an outflow area that ensures the creation of a uniform spray pattern.

In Weiterbildung der Erfindung fluchtet eine jeweilige Umfangswandung der wenigstens zwei Sackbohrungen im Bereich einer Schnittlinie mit der Umfangswandung der Drallkammer, wobei die Schnittlinie durch den Schnitt einer durch die Mittelachsen der jeweiligen Sackbohrung und der Drallkammer laufende Ebene mit der Umfangswandung der Drallkammer und der Umfangswandung der jeweiligen Sackbohrung definiert ist.In a further development of the invention, a respective peripheral wall of the at least two blind holes is aligned in the region of a cutting line with the peripheral wall of the swirl chamber, wherein the section line through the intersection of a plane passing through the center axes of the respective blind bore and the swirl chamber level with the peripheral wall of the swirl chamber and the peripheral wall of the respective Blind hole is defined.

Auf diese Weise lässt sich zwischen der Wandung der Drallkammer und der Wandung der Sackbohrungen ein strömungsgünstiger Übergang erzielen.In this way, a streamlined transition can be achieved between the wall of the swirl chamber and the wall of the blind holes.

Das der Erfindung zugrundeliegende Problem wird auch durch eine Kegeldüse mit einem Düsenkörper mit einem Drallraum, einer in einer Seitenwandung des Drallraums angeordneten Zulaufbohrung und einer in einer ersten Stirnwand des Drallraums angeordneten Austrittsbohrung gelöst, bei der an einer zweiten, der ersten Stirnwand gegenüberliegenden Stirnwand des Drallraums ein kegelartiger und sich in Richtung auf die Austrittsbohrung zu verjüngender Vorsprung angeordnet ist, der auf wenigstens einem Teil seiner Oberfläche wenigstens eine, um den kegelartigen Vorsprung umlaufende und in Richtung auf dessen verjüngtes Ende zulaufende Strömungsleitfläche aufweist, wobei der kegelartige Vorsprung frei in den Drallraum hineinragt und in radialer Richtung gesehen mit seiner gesamten Mantelfläche von einer Innenwandung des Drallraums beabstandet ist.The problem underlying the invention is also solved by a conical nozzle with a nozzle body having a swirl space, an inlet bore arranged in a side wall of the swirl space and an outlet bore arranged in a first end wall of the swirl space, at the second end wall opposite the first end wall End wall of the swirl space is a conical and is arranged in the direction of the outlet bore to be tapered on at least a portion of its surface at least one, around the conical projection and tapering towards its tapered end tapered flow guide surface, wherein the conical projection freely in protrudes into the swirl space and seen in the radial direction with its entire lateral surface is spaced from an inner wall of the swirl space.

Als Strömungsleitfläche kann eine Nut oder ein Vorsprung an dem sich verjüngenden Vorsprung angeordnet sein. Die erfindungsgemäße Kegeldüse kann eine kreiszylindrische Drallkammer mit rotationssymmetrischen und insbesondere planen Stirnwänden aufweisen und ist dadurch, wenigstens im Bereich der Drallkammer, einfach herstellbar. Durch den sich verjüngenden Vorsprung an der zweiten Stirnwand wird eine gewünschte Umlaufgeschwindigkeit der Strömung im Drallraum eingestellt.As a flow guide, a groove or a projection may be arranged on the tapered projection. The conical nozzle according to the invention can have a circular-cylindrical swirl chamber with rotationally symmetrical and, in particular, planar end walls and is thereby easy to produce, at least in the region of the swirl chamber. Due to the tapered projection on the second end wall, a desired rotational speed of the flow in the swirl chamber is set.

In Weiterbildung der Erfindung ist ein mit der Zulaufbohrung in Verbindung stehender und den Düsenkörper im Bereich der Zulaufbohrung umgebender Ringraum vorgesehen.In a development of the invention, an annular space communicating with the inlet bore and surrounding the nozzle body in the area of the inlet bore is provided.

Auf diese Weise ist die erfindungsgemäße Kegeldüse für einen Axialanschluss verwendbar.In this way, the conical nozzle according to the invention can be used for an axial connection.

In Weiterbildung der Erfindung ist die Strömungsleitfläche als mehrfach um den kegelartigen Vorsprung umlaufende und zu einer Mittellängsachse des kegelartigen Vorsprungs geneigte Nut ausgebildet.In a further development of the invention, the flow guide surface is configured as a groove running around the conical projection several times and inclined to a central longitudinal axis of the conical projection.

Mittels einer solchen umlaufenden Nut kann eine Umlaufströmungsgeschwindigkeit im Drallraum eingestellt werden, wodurch das Sprühbild der erfindungsgemäßen Kegeldüse beeinflusst werden kann.By means of such a circumferential groove, a circulating flow velocity can be adjusted in the swirl space, whereby the spray pattern of the conical nozzle according to the invention can be influenced.

Das der Erfindung zugrundeliegende Problem wird auch durch eine Kegeldüse mit einem Düsenkörper mit einem Drallraum, einer in einer Seitenwandung des Drallraums angeordneten Zulaufbohrung und einer in einer ersten Stirnwand des Drallraums angeordneten Austrittsbohrung gelöst, bei der sich die Austrittsbohrung ausgehend vom Drallraum ohne Querschnittsverengung kegelartig zweistufig erweitert, wobei ein sich an dem Drallraum anschließender erster Kegelbereich mit einem gegenüber der Umfangswandung des Drallraums ersten Kegelwinkel und ein sich an den ersten Kegelbereich anschließender zweiter Kegelbereich vorgesehen sind, wobei der zweite Kegelbereich gegenüber der Umfangswandung des Drallraums einen zweiten, größeren Kegelwinkel einnimmt.The problem underlying the invention is also solved by a conical nozzle with a nozzle body having a swirl space, an inlet bore arranged in a side wall of the swirl space and an outlet bore arranged in a first end wall of the swirl space, in which the outlet bore widens conically in two stages starting from the swirl space without cross-sectional constriction in which a first conical region adjoining the swirl space is provided with a first conical angle relative to the circumferential wall of the swirl space and a second conical region adjoining the first conical region, wherein the second conical region assumes a second, larger conical angle relative to the peripheral wall of the swirl space.

Eine solche Kegeldüse ist besonders verschmutzungsunempfindlich, da sich die Austrittsbohrung ausgehend vom Drallraum erweitert und somit der Drallraum selbst nicht verstopfen kann. Der Drallraum kann beispielsweise kreiszylindrisch ausgebildet sein.Such a conical nozzle is particularly insensitive to contamination, since the exit bore expands starting from the swirl space and thus the swirl space itself can not become clogged. The swirl space can be formed, for example, circular cylindrical.

In Weiterbildung der Erfindung ist ein mit der Zulaufbohrung in Verbindung stehender und den Düsenkörper im Bereich der Zulaufbohrung umgebender Ringraum vorgesehen.In a development of the invention, an annular space communicating with the inlet bore and surrounding the nozzle body in the area of the inlet bore is provided.

Auf diese Weise ist die erfindungsgemäße Kegeldüse für einen Axialanschluss geeignet.In this way, the conical nozzle according to the invention is suitable for an axial connection.

In Weiterbildung der Erfindung ist der Düsenkörper einstückig ausgebildet.In a further development of the invention, the nozzle body is integrally formed.

Da sich die Austrittsbohrung ausgehend vom Drallraum kegelartig erweitert, weist die erfindungsgemäße Kegeldüse zwischen Austrittsbohrung und Drallraum keine Hinterschneidung auf und kann dadurch kostengünstig als einstückiges Bauteil hergestellt werden.Since the outlet bore widens conically starting from the swirl space, the conical nozzle according to the invention has no undercut between the outlet bore and the swirl space and can therefore be inexpensively manufactured as a one-piece component.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung bevorzugter Ausführungsformen der Erfindung in Zusammenhang mit den Zeichnungen. In den Zeichnungen zeigen:

Fig. 1
eine teilweise geschnittene Ansicht einer erfindungsgemäßen Kegeldüse gemäß einer ersten Ausführungsform,
Fig. 2
eine perspektivische Ansicht eines Drallraumdeckels für die Kegeldüse der Fig. 1,
Fig. 3
eine Seitenansicht eines alternativen Drallraumdeckels für die Kegeldüse der Fig. 1,
Fig. 4
eine Schnittansicht eines weiteren alternativen Drallraumdeckels für die Kegeldüse der Fig. 1,
Fig. 5
eine perspektivische Ansicht eines Düsenmundstücks der Kegeldüse der Fig. 1,
Fig. 6
eine Draufsicht auf das Düsenmundstück der Fig. 5,
Fig. 7
eine Schnittansicht entlang der Linie X-X der Fig. 6,
Fig. 8
eine Schnittansicht entlang der Linie Y-Y der Fig. 6,
Fig. 9
eine Schnittansicht einer weiteren Ausführungsform der erfindungsgemäßen Kegeldüse,
Fig. 10
einen Drallraumdeckel für eine weitere Ausführungsform einer erfindungsgemäßen Kegeldüse und
Fig. 11
eine Schnittansicht eines Düsenmundstücks zur Verwendung mit dem Drallraumdeckel der Fig. 10.
Further features and advantages of the invention will become apparent from the claims and the following description of preferred embodiments of the invention in conjunction with the drawings. In the drawings show:
Fig. 1
a partially sectioned view of a conical nozzle according to the invention according to a first embodiment,
Fig. 2
a perspective view of a swirl chamber cover for the conical nozzle of Fig. 1 .
Fig. 3
a side view of an alternative swirl cover for the conical nozzle of Fig. 1 .
Fig. 4
a sectional view of another alternative swirl chamber cover for the conical nozzle of Fig. 1 .
Fig. 5
a perspective view of a nozzle tip of the conical nozzle of Fig. 1 .
Fig. 6
a plan view of the nozzle mouth of the Fig. 5 .
Fig. 7
a sectional view taken along the line XX of Fig. 6 .
Fig. 8
a sectional view taken along the line YY of Fig. 6 .
Fig. 9
a sectional view of another embodiment of the conical nozzle according to the invention,
Fig. 10
a swirl chamber cover for a further embodiment of a conical nozzle according to the invention and
Fig. 11
a sectional view of a nozzle orifice for use with the swirl lid of the Fig. 10 ,

Die Schnittansicht der Fig. 1 zeigt eine Vollkegeldüse mit Axialanschluss mit einem Düsenkörper 10 und einem den Düsenkörper 10 abschnittsweise umgebenden Anschlussstück 12. Der Düsenkörper 10 ist zweiteilig aufgebaut und weist ein Düsenmundstück 14 und einen Drallraumdeckel 16 auf. In dem Düsenmundstück 14 ist ein Drallraum 18 vorgesehen, und in einer ersten Stirnwand des Drallraums 18 ist eine Austrittsbohrung 20 angeordnet. Eine zweite, der ersten Stirnwand gegenüberliegende Stirnwand des Drallraums 18 wird durch den Drallraumdeckel 16 gebildet. Der Drallraum 18 ist kreiszylinderförmig ausgebildet und eine Zulaufbohrung 22 mündet im Bereich der Seitenwandung des Drallraums 18 in den Drallraum 18. Die Zulaufbohrung 22 ist in der Ansicht der Fig. 1 an und für sich nicht erkennbar und daher lediglich gestrichelt dargestellt.The sectional view of Fig. 1 shows a full cone nozzle with axial connection with a nozzle body 10 and the nozzle body 10 partially surrounding connector 12. The nozzle body 10 is constructed in two parts and has a nozzle mouthpiece 14 and a swirl chamber cover 16. In the nozzle mouthpiece 14, a swirl space 18 is provided, and in a first end wall of the swirl space 18, an outlet bore 20 is arranged. A second, the first end wall opposite end wall of the swirl chamber 18 is formed by the swirl chamber cover 16. The swirl chamber 18 is formed circular-cylindrical and an inlet bore 22 opens in the region of the side wall of the swirl chamber 18 in the swirl chamber 18. The inlet bore 22 is in the view of Fig. 1 in and of itself not recognizable and therefore shown only dashed.

Das Düsenmundstück 14 weist an seinem vorderen Ende im Bereich der Austrittsbohrung 20 einen umlaufenden Ringflansch auf, an dem sich ein Bereich mit verringertem Außendurchmesser und einem Außengewinde 24 anschließt. An den Bereich mit dem Außengewinde 24 schließt sich ein Bereich mit noch weiter verringertem Durchmesser an, in dem dann die Zulaufbohrung 22 angeordnet ist. Insgesamt ist das Düsenmundstück 14 somit abgestuft ausgebildet. Mit dem Außengewinde 24 ist das Düsenmundstück 14 in ein vorderes Ende des Anschlussstücks 12 eingeschraubt und der Ringflansch des Düsenmundstücks 14 liegt an einer Stirnseite des Anschlussstücks 12 an und definiert dadurch eine Einbaulage des Düsenmundstücks 14. Das Anschlussstück 12 weist ausgehend von seinem vorderen Ende eine axiale Bohrung 26 auf, die in ihrem vorderen Bereich ein Innengewinde trägt, das mit dem Außengewinde 24 des Düsenmundstücks 14 eingreift. Ein Innendurchmesser der Axialbohrung 26 ist größer als ein Außendurchmesser des Bereichs des Düsenmundstücks 14, in dem die Zulaufbohrung 22 angeordnet ist. Der Innendurchmesser der Axialbohrung 26 ist auch größer als ein Außendurchmesser des Drallraumdeckels 16. Zwischen dem Düsenmundstück 14 und dem Anschlussstück 12 ergibt sich dadurch im Bereich der Zulaufbohrung 22 ein Ringraum. Dieser Ringraum setzt sich ausgehend von der Zulaufbohrung 22 bis zum hinteren Ende des Drallraumdeckels 16 fort. In ihrem weiteren Verlauf bis zum hinteren, der Austrittsbohrung 20 abgewandten Ende der Axialbohrung 26 verjüngt sich diese zunächst kegelförmig und geht dann in einen Anschlussabschnitt mit Innengewinde über. Das Anschlussstück 12 kann somit axial auf eine Rohrleitung aufgeschraubt werden und benötigt in radialer Richtung lediglich einen geringen Einbauraum. Wie in der Fig. 1 zu erkennen ist, benötigt die erfindungsgemäße Kegeldüse dennoch keine verstopfungsanfälligen Dralleinsätze, wie sie in konventionellen Axialvollkegeldüsen vorgesehen sind. Die freien Querschnitte der erfindungsgemäßen Kegeldüse liegen dadurch um etwa 50% bis 60% über den freien Querschnitten konventioneller Axialvollkegeldüsen. Die erfindungsgemäßen Kegeldüsen sind damit wesentlich weniger verstopfungsempfindlich als konventionelle Axialvollkegeldüsen. Gegenüber konventionellen Vollkegeldüsen mit Tangentialanschluss benötigen die erfindungsgemäßen Kegeldüsen einen wesentlich geringeren Einbauraum.The nozzle mouthpiece 14 has at its front end in the region of the outlet bore 20 to a circumferential annular flange, on which a region with a reduced outer diameter and an external thread 24 connects. The region with the external thread 24 is adjoined by an area with an even further reduced diameter, in which the inlet bore 22 is then arranged. Overall, the nozzle mouthpiece 14 is thus stepped. With the external thread 24, the nozzle tip 14 is screwed into a front end of the fitting 12 and the annular flange of the nozzle tip 14 abuts an end face of the fitting 12 and thereby defines an installation position of the nozzle tip 14. The fitting 12 has an axial starting from its front end Bore 26 which carries in its front region an internal thread which engages with the external thread 24 of the nozzle orifice 14. An inner diameter of the axial bore 26 is larger than an outer diameter of the region of the nozzle orifice 14 in which the inlet bore 22 is arranged. The inner diameter of the axial bore 26 is also larger than an outer diameter of the swirl chamber cover 16. Between the nozzle orifice 14 and the connecting piece 12, this results in the region of the inlet bore 22 an annular space. This annular space continues from the inlet bore 22 to the rear end of the swirl chamber cover 16. In its further course to the rear, the outlet bore 20 remote from the end of the axial bore 26, this tapers first cone-shaped and then goes into a connection section with internal thread. The connecting piece 12 can thus be screwed axially onto a pipeline and requires only a small installation space in the radial direction. Like in the Fig. 1 can be seen, the conical nozzle according to the invention still requires no blockage-prone swirl inserts, as provided in conventional axial full cone nozzles. The free cross sections of the conical nozzle according to the invention are characterized by about 50% to 60% above the free cross sections of conventional axial full cone nozzles. The conical nozzles according to the invention are thus much less susceptible to blockage than conventional axial full cone nozzles. Compared to conventional full cone nozzles with tangential connection, the conical nozzles according to the invention require a considerably smaller installation space.

Ein zufriedenstellendes Sprühbild einschließlich einer gewünschten Geschwindigkeitsverteilung in einem von der erfindungsgemäßen Düse erzeugten Vollkegel wird zum einen über ein Verhältnis der Größe der Zulaufbohrung 22 zur Größe der Austrittsbohrung 20 eingestellt, die in einem Bereich von 1:1 bis maximal 1:1,5 liegen kann. Darüber hinaus ist ein Verhältnis der Zulaufbohrung zum Drallraumdurchmesser zu beachten, das größer sein kann als etwa 1:1,5. Eine Größe der Zulaufbohrung zur Größe des Ringspalts zwischen dem Anschlussstück 12 und dem Düsenkörper 14 kann 1:1 betragen, der Ringspalt kann aber auch größer als die Zulaufbohrung ausgeführt werden. Weiterhin ist die Anordnung der Zulaufbohrung 22 relativ zu einer Mittelachse 28 der Drallkammer 18 von Bedeutung, die nachstehend noch erläutert wird. Zur Beeinflussung einer Umlaufgeschwindigkeit des zu versprühenden Mediums in der Drallkammer 18 dient darüber hinaus die Gestaltung der durch den Drallraumdeckel 16 gebildeten zweiten Stirnwand des Drallraums 18 sowie die Gestaltung der ersten Stirnwand des Drallraums 18, die sich an die Austrittsbohrung 20 anschließt. Der Drallraumdeckel 16 weist an seiner, dem Drallraum 18 zugewandten Seite einen kreiszylindrischen Vorsprung 30 auf, der konzentrisch zu Mittelachse 28 angeordnet ist. Die erste Stirnwand des Drallraums 18, die in die Austrittsbohrung 20 übergeht, ist zum einen kegelförmig und sich in Richtung auf die Austrittsbohrung 20 zu verjüngend ausgestaltet und darüber hinaus sind zwei Sackbohrungen 32 in der ersten Stirnwand angeordnet, die nachstehend noch genauer erläutert werden.A satisfactory spray pattern including a desired velocity distribution in a full cone produced by the nozzle according to the invention is adjusted firstly via a ratio of the size of the inlet bore 22 to the size of the outlet bore 20, which may be in a range from 1: 1 to at most 1: 1.5 , In addition, a ratio of the inlet bore to the swirl diameter should be considered, which can be greater than about 1: 1.5. A size of the inlet bore to the size of the annular gap between the connector 12 and the nozzle body 14 may be 1: 1, but the annular gap can also be made larger than the inlet bore. Furthermore, the arrangement of the inlet bore 22 relative to a central axis 28 of the swirl chamber 18 of importance, which will be explained below. To influence a rotational speed of the medium to be sprayed in the swirl chamber 18 also serves the design of the second end wall of the swirl space 18 formed by the swirl chamber cover 16 and the design of the first end wall of the swirl chamber 18, which adjoins the outlet bore 20. The swirl chamber cover 16 has at its, the swirl chamber 18 side facing a circular cylindrical Projection 30 which is arranged concentrically to the central axis 28. The first end wall of the swirl space 18, which merges into the outlet bore 20, is tapered on the one hand and tapering in the direction of the outlet bore 20 and, moreover, two blind holes 32 are arranged in the first end wall, which will be explained in more detail below.

Die perspektivische Ansicht der Fig. 2 zeigt den Drallraumdeckel 16 der Fig. 1. Der Drallraumdeckel 16 ist mit dem kreiszylindrischen Vorsprung 30 versehen, der sich ausgehend von einer ebenen Stirnfläche 34 erstreckt. Ausgehend vom Vorsprung 30 schließt sich an die Stirnfläche 34 ein kreiszylindrischer Abschnitt mit einem Außengewinde 36 an. Mittels des Außengewindes 36 wird der Drallraumdeckel 16 in ein hinteres Ende des Düsenmundstücks 14, das der Austrittsbohrung 20 abgewandt ist, eingeschraubt. An das Außengewinde 36 schließt sich ein ringförmiger Dichtflansch 38 an, auf den ein nach Art einer Sechskantfläche gestalteter Außenumfangsbereich 40 folgt.The perspective view of Fig. 2 shows the swirl chamber lid 16 of Fig. 1 , The swirl chamber cover 16 is provided with the circular cylindrical projection 30, which extends from a flat end face 34. Starting from the projection 30, a circular cylindrical section with an external thread 36 connects to the end face 34. By means of the external thread 36 of the swirl chamber cover 16 is screwed into a rear end of the nozzle mouthpiece 14, which faces away from the outlet bore 20. Adjoining the external thread 36 is an annular sealing flange 38, which is followed by an outer circumferential region 40 designed in the manner of a hexagonal surface.

Die Seitenansicht der Fig. 3 zeigt einen alternativen Drallraumdeckel 42. Der Drallraumdeckel 42 unterscheidet sich vom Drallraumdeckel 16 durch die Gestaltung einer, dem Drallraum 18 zugewandten Stirnfläche 44, die die zweite, der Austrittsbohrung 20 gegenüberliegende Stirnwand des Drallraums 18 bildet. Die Stirnfläche 44 ist nach außen gewölbt gestaltet und ragt dadurch im montierten Zustand in den Drallraum 18 vor.The side view of Fig. 3 shows an alternative swirl chamber cover 42. The swirl chamber cover 42 differs from the swirl chamber cover 16 by the design of one, the swirl chamber 18 facing end surface 44, which forms the second, the outlet bore 20 opposite end wall of the swirl chamber 18. The end face 44 is curved outwardly and thereby protrudes in the mounted state in the swirl chamber 18.

In der Schnittansicht der Fig. 4 ist eine weitere alternative Form eines Drallraumdeckels 46 dargestellt. Auch der Drallraumdeckel 46 unterscheidet sich vom Drallraumdeckel 16 lediglich durch die Gestaltung seiner, im montierten Zustand dem Drallraum 18 zugewandten Stirnfläche 48. Die Stirnfläche 48 ist nach innen gewölbt ausgebildet, so dass durch die Stirnfläche 48 eine Vertiefung im Drallraumdeckel 46 geschaffen wird. Im montierten Zustand erweitert diese Vertiefung somit den Drallraum 18 in eine Richtung von der Austrittsbohrung 20 weg.In the sectional view of Fig. 4 another alternative form of swirl-chamber cover 46 is shown. Also, the swirl chamber cover 46 differs from the swirl chamber cover 16 only by the design of its, in the assembled state the swirl chamber 18 facing end face 48. The end face 48 is curved inwardly, so that created by the end face 48 a recess in the swirl chamber cover 46 becomes. In the assembled state, this depression thus expands the swirl space 18 in a direction away from the exit bore 20.

Die perspektivische Darstellung der Fig. 5 zeigt das Düsenmundstück 14 der Fig. 1 in einer Ansicht von schräg hinten. Zu erkennen ist, dass die Zulaufbohrung 22 außermittig angeordnet ist, so dass das zu versprühende Medium durch die Zulaufbohrung 22 so in den Drallraum 18 eingeleitet wird, dass eine Umlaufströmung im Drallraum 18 erzeugt wird. Weiterhin ist zu erkennen, dass der Umfang des ersten Bereichs des Düsenmundstücks 14, der auf der Seite der Austrittsbohrung 20 liegt, mehrflächig und nach Art einer Sechskantmutter gestaltet ist, um das Einschrauben des Düsenmundstücks 14 in das in der Fig. 1 gezeigte Anschlussstück 12 zu ermöglichen.The perspective view of Fig. 5 shows the nozzle mouthpiece 14 of Fig. 1 in a view from diagonally behind. It can be seen that the inlet bore 22 is arranged off-center, so that the medium to be sprayed is introduced through the inlet bore 22 into the swirl chamber 18 such that a circulating flow is generated in the swirl chamber 18. Furthermore, it can be seen that the circumference of the first portion of the nozzle orifice 14, which is located on the side of the outlet bore 20, is multi-surface and designed in the manner of a hexagon nut, in order to screw the nozzle orifice 14 in the in Fig. 1 To allow shown connector 12.

Die Draufsicht der Fig. 6 zeigt das Düsenmundstück 14 der Fig. 1, wobei in der Ansicht der Fig. 6 an und für sich nicht erkennbare Elemente lediglich gestrichelt dargestellt sind. Dies betrifft beispielsweise die Zulaufbohrung 22, die gestrichelt dargestellt ist und deren außermittige Lage zum Drallraum 18 gut zu erkennen ist. Die Zulaufbohrung 22 mündet so in den Drallraum 18 ein, dass eine Strömung zwar außermittig jedoch noch nicht tangential in die Umlaufkammer 18 eingeleitet wird. Wie in der Darstellung der Fig. 6 gut zu erkennen ist, sind die beiden Sackbohrungen 32 in der ersten Stirnwand benachbart zur Austrittsbohrung 20 angeordnet. Die beiden Sackbohrungen 32 sind kreiszylindrisch ausgeführt, weisen die gleichen Abmessungen auf und ihre Mittelachsen sowie die Mittelachse der Austrittsbohrung 20 liegen in einer gemeinsamen Ebene. Die Sackbohrungen 32 weisen jeweils einen Durchmesser auf, der größer ist als der halbe Innendurchmesser des Drallraums 18. Die Sackbohrungen 32 setzen einerseits die Innenumfangswandung des Drallraums 18 fort und überlappen sich im Bereich der Austrittsbohrung 20. Insgesamt entsteht durch die beiden Sackbohrungen 32 eine achtförmige Ausnehmung in der ersten Stirnwand des Drallraums 18, wobei die Austrittsbohrung 20 im Mittelpunkt dieser achtförmigen Ausnehmung aus den beiden Sackbohrungen 32 angeordnet ist. Die beiden Sackbohrungen 32 dienen zur Beeinflussung der Umlaufgeschwindigkeit der Strömung im Drallraum 18 und zur Bildung eines Ausschlussbereichs in der Umgebung der Austrittsbohrung 20.The top view of Fig. 6 shows the nozzle mouthpiece 14 of Fig. 1 , where in the view of Fig. 6 on and for themselves unrecognizable elements are shown only in dashed lines. This applies, for example, the inlet bore 22, which is shown in dashed lines and the eccentric position of the swirl chamber 18 is clearly visible. The inlet bore 22 opens into the swirl chamber 18 in such a way that a flow, although not eccentrically introduced, is not yet introduced tangentially into the circulation chamber 18. As in the presentation of Fig. 6 can be clearly seen, the two blind holes 32 in the first end wall adjacent to the outlet bore 20 are arranged. The two blind holes 32 are circular cylindrical, have the same dimensions and their central axes and the central axis of the outlet bore 20 lie in a common plane. The blind holes 32 each have the inner circumferential wall of the swirling space 18 and overlap in the region of the outlet bore 20. Overall, an eight-shaped recess is formed by the two blind holes 32 in the first end wall of the swirl space 18, wherein the outlet bore 20 is arranged in the center of this eight-shaped recess of the two blind holes 32. The two blind holes 32 serve to influence the rotational speed of the flow in the swirl space 18 and to form an exclusion area in the vicinity of the outlet bore 20.

In der Schnittansicht der Fig. 7 entlang der Linie X-X der Fig. 6 ist eine der Sackbohrungen 32 und deren Anordnung zur Austrittsbohrung 20 zu erkennen.In the sectional view of Fig. 7 along the line XX the Fig. 6 is one of the blind holes 32 and their arrangement to the outlet bore 20 can be seen.

Weiter ist zu erkennen, dass die erste Stirnwand 50 des Drallraums 18 kegelförmig ausgebildet ist und sich in Richtung auf die Austrittsbohrung 20 hin verjüngt.Furthermore, it can be seen that the first end wall 50 of the swirl space 18 is conical and tapers in the direction of the outlet bore 20.

Umlaufend um die Austrittsbohrung 20 ist in der, dem Drallraum 18 abgewandten Stirnfläche des Düsenmundstücks 14 eine umlaufende und im Querschnitt dreieckförmige Ausnehmung 52 vorgesehen.Circumferentially around the outlet bore 20 is in the, the swirl space 18 facing away from the end face of the nozzle mouthpiece 14, a circumferential and triangular in cross-section recess 52 is provided.

In der Schnittansicht der Fig. 8 entlang der Linie Y-Y ist wiederum die kegelförmige Ausgestaltung der ersten Stirnwand des Drallraums 18 zu erkennen. Weiterhin ist zu erkennen, dass die Umfangswandungen der beiden Sackbohrungen 32 in der Schnittebene y-y der Fig. 8 mit der Umfangswandung des Drallraums 18 fluchten. In der Schnittebene der Fig. 8, die durch den Schnitt der Umfangswandung des Drallraums 18 mit einer Ebene, in der die Mittelachsen der beiden Sackbohrungen 32 und der Austrittsbohrung 20 liegen definiert ist, fluchten somit eine jeweilige Umfangswandung einer Sackbohrung 32 und die Umfangswandung des Drallraums 18, so dass sich in der Darstellung der Fig. 8 eine durchgehende, gerade Linie ergibt.In the sectional view of Fig. 8 along the line YY turn the cone-shaped configuration of the first end wall of the swirl space 18 can be seen. Furthermore, it can be seen that the peripheral walls of the two blind holes 32 in the sectional plane yy of Fig. 8 aligned with the peripheral wall of the swirl space 18. In the sectional plane of the Fig. 8 , which is defined by the intersection of the peripheral wall of the swirl space 18 with a plane in which the center axes of the two blind holes 32 and the outlet bore 20 are located, thus a respective peripheral wall of a blind bore 32 and the peripheral wall of the swirl space 18, so that in presentation of the Fig. 8 gives a continuous, straight line.

Die Schnittansicht der Fig. 9 zeigt eine weitere bevorzugte Ausführungsform der erfindungsgemäßen Kegeldüse zur Erzeugung eines Vollkegel-Sprühbilds, wobei in der Darstellung der Fig. 9 lediglich ein Düsenmundstück 54 dargestellt ist. Das Düsenmundstück 54 ist für den Einbau in ein Anschlussstück vorgesehen, das dem Anschlussstück 12 der Fig. 1 entspricht. Bei dem Düsenmundstück 54 geht ein kreiszylindrisch ausgebildeter Drallraum 56 ohne Querschnittsverengung in eine Austrittsbohrung 58 über. Ausgehend vom Drallraum 56 erweitert sich dabei die Austrittsbohrung 58 kegelartig, wobei ein erster Kegelbereich 60 mit einem gegenüber der Umfangswandung des Drallraums 56 ersten Kegelwinkel und ein sich an den ersten Bereich 60 anschließender zweiter Kegelbereich 62 vorgesehen sind, wobei der zweite Kegelbereich 62 gegenüber der Umfangswandung des Drallraums 56 einen größeren Winkel einnimmt. Die Austrittsbohrung 58 erweitert sich demnach ausgehend vom Drallraum 56 zweistufig durch die Kegelbereiche 60, 62. In die Umfangswandung des Drallraums 56 mündet eine Zulaufbohrung 64, die mittig zum Drallraum 56 angeordnet ist, so dass sich die Mittelachsen der Zulaufbohrung 64 und des Drallraums 56 schneiden. Eine, der Austrittsbohrung 58 gegenüberliegende zweite Stirnwand des Drallraums 56 ist eben ausgebildet. Insgesamt weist das Düsenmundstück 54 dadurch eine besonders einfache Formgebung auf, die sehr wenig verstopfungsempfindlich ist. Ein wesentlicher Vorteil des Düsenmundstück 54 ist, dass dieses einstückig hergestellt werden kann. Das Düsenmundstück 54 kann in das in der Fig. 1 dargestellte Anschlussstück eingeschraubt werden.The sectional view of Fig. 9 shows a further preferred embodiment of the conical nozzle according to the invention for producing a full cone spray pattern, where in the representation of Fig. 9 only a nozzle orifice 54 is shown. The nozzle mouthpiece 54 is intended for installation in a connection piece which is the connection piece 12 of the Fig. 1 equivalent. In the nozzle mouthpiece 54, a circular-cylindrical swirl space 56 without cross-sectional constriction merges into an outlet bore 58. Starting from the swirl chamber 56, the outlet bore 58 widens conically, with a first conical region 60 being provided with a first conical angle relative to the circumferential wall of the swirling space 56 and a second conical region adjoining the first region 60, the second conical region 62 being opposite the circumferential wall the swirl space 56 occupies a larger angle. Accordingly, the outlet bore 58 widens in two stages starting from the swirl space 56 through the conical areas 60, 62. An inlet bore 64, which is arranged centrally to the swirl space 56, opens into the circumferential wall of the swirl space 56, so that the center axes of the inlet bore 64 and the swirl space 56 intersect , One, the outlet bore 58 opposite the second end wall of the swirl chamber 56 is flat. Overall, the nozzle mouthpiece 54 thereby has a particularly simple shape, which is very little susceptible to clogging. A significant advantage of the nozzle tip 54 is that it can be made in one piece. The nozzle mouthpiece 54 may be in the in the Fig. 1 be screwed shown connector.

Die Seitenansicht der Fig. 10 zeigt einen Drallraumdeckel 66, der zum Einsetzen in ein Düsenmundstück 68 vorgesehen ist, das in Schnittansicht in der Fig. 11 dargestellt ist. Der Drallraumdeckel 66 weist auf seiner, einem Drallraum 70 des Düsenmundstücks 68 zugewandten Stirnfläche einen kegelartigen Vorsprung 72 auf, der auf einem Abschnitt seines Umfangs zwei parallel zueinander umlaufende Nuten 74 und 76 aufweist. Eine Erstreckungsrichtung der Nuten 74, 76 ist gegenüber einer Mittelachse 78 des Drallraumdeckels 66 geneigt. Der kegelartige Vorsprung 72 mit den Nuten 74, 76 sorgt für eine Einstellung der Umlaufgeschwindigkeit im Drallraum 70 auf ein Maß, das ein gewünschtes Sprühbild möglich macht.The side view of Fig. 10 shows a swirl chamber cover 66, which is intended for insertion into a nozzle orifice 68, which in sectional view in the Fig. 11 is shown. The swirl chamber cover 66 has on its, a swirl space 70 of the nozzle mouthpiece 68 facing end face on a conical projection 72 which has two parallel circumferential grooves 74 and 76 on a portion of its circumference. An extension direction of the grooves 74, 76 is inclined with respect to a central axis 78 of the swirl chamber cover 66. The cone-like Projection 72 with the grooves 74, 76 provides an adjustment of the rotational speed in the swirl chamber 70 to a level that makes a desired spray pattern possible.

Wie in der Schnittansicht der Fig. 11 zu erkennen ist, mündet eine Zulaufbohrung 80 außermittig in den Drallraum 70, so dass eine im Drallraum 70 umlaufende Strömung erzeugt wird, deren Umlaufgeschwindigkeit dann durch den Vorsprung 72 des Drallraumdeckels 66 kontrolliert wird.As in the sectional view of Fig. 11 can be seen, an inlet bore 80 opens off-center into the swirl space 70, so that a circulating in the swirl space 70 flow is generated, the rotational speed is then controlled by the projection 72 of the swirl chamber cover 66.

Das Düsenmundstück 68 ist für eine Axialvollkegeldüse vorgesehen und wird in ein Anschlussstück eingeschraubt, das dem in der Fig. 1 gezeigten Anschlussstück 12 entspricht.The nozzle orifice 68 is intended for an axial full cone nozzle and is screwed into a fitting which corresponds to that in the Fig. 1 shown connector 12 corresponds.

Claims (13)

  1. Cone nozzle with a nozzle body (10) having a swirl chamber (18), an inlet hole (22) arranged in a side wall of the swirl chamber and an outlet hole (20) arranged in a first end wall of the swirl chamber, characterized in that a rotation-symmetrical projection (30) or a rotation-symmetrical recess (48) is arranged on a second end wall of the swirl chamber opposite the first end wall and in that at least two blind holes (32) are arranged in the first end wall adjacent to the outlet hole.
  2. Cone nozzle according to Claim 1, characterized in that an annular space (18) connected to the inlet hole (22) and enclosing the nozzle body (10) in the area of the inlet hole is provided.
  3. Cone nozzle according to Claim 1 or 2, characterized in that the projection (30) is designed circular-cylindrical.
  4. Cone nozzle according to one of the preceding claims, characterized in that the at least two blind holes (32) are designed circular-cylindrical.
  5. Cone nozzle according to one of the preceding claims, characterized in that the at least two blind holes (32) merge in the area of the outlet hole (20).
  6. Cone nozzle according to Claim 5, characterized in that the central axes of the blind holes (32) and of the outlet hole (20) are in a common plane.
  7. Cone nozzle according to one of the preceding claims, characterized in that a circumferential wall of the at least two blind holes (32) in the area of a section Y-Y defined by the intersection of a plane running through the central axes of the respective blind hole and of the swirl chamber with the circumferential wall of the swirl chamber and with the circumferential wall of the respective blind hole is aligned with the circumferential wall of the swirl chamber (18).
  8. Cone nozzle with a nozzle body having a swirl chamber, an inlet hole arranged in a side wall of the swirl chamber and an outlet hole arranged in a first end wall of the swirl chamber, where on a second end wall (66) of the swirl chamber (70) facing the first end wall a conical projection (72) tapering in the direction of the outlet hole is arranged that has on at least part of its surface at least one flow guide surface enclosing the conical projection and leading to its tapered end, characterized in that the conical projection (72) projects freely into the swirl chamber (70) and is at a distance by its entire jacket surface from an inner wall of the swirl chamber (70) when seen in the radial direction.
  9. Cone nozzle according to Claim 8, characterized in that an annular space connected to the inlet hole (80) and enclosing the nozzle body in the area of the inlet hole is provided.
  10. Cone nozzle according to Claim 8 or 9, characterized in that the flow guide surface is designed as a groove (74) passing several times around the conical projection (72) and angled relative to a central longitudinal axis of the conical projection.
  11. Cone nozzle with a nozzle body (54) having a swirl chamber (56), an inlet hole (64) arranged in a side wall of the swirl chamber and an outlet hole (58) arranged in a first end wall of the swirl chamber, characterized in that said outlet hole starting from the swirl chamber (56) widens conically and in two stages without constriction of the cross section, where a first conical area (60) adjacent to the swirl chamber (56) with a first taper angle relative to the circumferential wall of the swirl chamber (56) and a second conical area (62) adjacent to the first conical area (60) are provided, where the second conical area is at a second and larger taper angle relative to the circumferential wall of the swirl chamber (56).
  12. Cone nozzle according to Claim 11, characterized in that an annular space (18) connected to the inlet hole (64) and enclosing the nozzle body in the area of the inlet hole is provided.
  13. Cone nozzle according to Claim 11 or 12, characterized in that the nozzle body (54) is designed in one piece.
EP04027028A 2003-12-17 2004-11-13 Nozzle for a conical jet Not-in-force EP1543882B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361349 2003-12-17
DE10361349A DE10361349B4 (en) 2003-12-17 2003-12-17 cone nozzle

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EP1543882A2 EP1543882A2 (en) 2005-06-22
EP1543882A3 EP1543882A3 (en) 2006-07-05
EP1543882B1 true EP1543882B1 (en) 2009-02-18

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EP (1) EP1543882B1 (en)
JP (1) JP4732747B2 (en)
KR (1) KR20050061379A (en)
CN (1) CN100335181C (en)
AT (1) ATE422966T1 (en)
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DE10361349A1 (en) 2005-07-14
CN1640551A (en) 2005-07-20
BRPI0405615A (en) 2005-08-30
ATE422966T1 (en) 2009-03-15
CN100335181C (en) 2007-09-05
US20050133628A1 (en) 2005-06-23
KR20050061379A (en) 2005-06-22
EP1543882A3 (en) 2006-07-05
JP2005177751A (en) 2005-07-07
JP4732747B2 (en) 2011-07-27
DE502004009006D1 (en) 2009-04-02
US7370815B2 (en) 2008-05-13
DE10361349B4 (en) 2005-12-08
EP1543882A2 (en) 2005-06-22

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