EP1972381A2 - Nozzle array for creating a water stream - Google Patents

Nozzle array for creating a water stream Download PDF

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Publication number
EP1972381A2
EP1972381A2 EP20080004431 EP08004431A EP1972381A2 EP 1972381 A2 EP1972381 A2 EP 1972381A2 EP 20080004431 EP20080004431 EP 20080004431 EP 08004431 A EP08004431 A EP 08004431A EP 1972381 A2 EP1972381 A2 EP 1972381A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
sleeve
air supply
water jet
lateral surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20080004431
Other languages
German (de)
French (fr)
Other versions
EP1972381A3 (en
EP1972381B1 (en
Inventor
Reinhard Wesselmeier
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.)
Oase Pumpen Wuebker Soehne GmbH and Co Maschinenfabrik
Original Assignee
Oase Pumpen Wuebker Soehne GmbH and Co Maschinenfabrik
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.)
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Publication date
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Publication of EP1972381A2 publication Critical patent/EP1972381A2/en
Publication of EP1972381A3 publication Critical patent/EP1972381A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • 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
    • B05B1/3402—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 avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/08—Fountains
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet

Definitions

  • the invention relates to a nozzle arrangement for generating a water jet according to the preamble of claim 1, and a fountain jet generator with such a nozzle arrangement.
  • Such nozzle arrangements are known.
  • the jet of water shoots out of the nozzle opening into a visible area for a viewer.
  • the water jet should have a turbulence-free and air bubble-free flow in order to be used as a light guide can.
  • the invention is therefore an object of the invention to provide a nozzle assembly of the type mentioned, which can produce a better usable as a light guide water jet in a body with a wave motion and is structurally simple and inexpensive to produce.
  • the invention solves this problem by a nozzle arrangement with the features of claim 1 and by a fountain jet generator according to claim 12 with such a nozzle arrangement. Further advantageous embodiments of the invention can be found in the dependent claims 2 to 11.
  • a nozzle opening at least partially projecting, arranged on the nozzle plate nozzle sleeve with an inner sleeve outer surface surrounding a nozzle jet from the water jet outlet at a safety distance it is ensured that the emerging from the nozzle opening water jet is protected by the nozzle sleeve from waves and at the same time the jet of water does not touch the lateral surface by maintaining a safety distance to the inner sleeve lateral surface, so that no turbulence due to friction and / or van der Waals forces can arise here.
  • the safety distance is chosen so that an unwanted contact of the sleeve casing surface is excluded with the water jet.
  • the safety distance is defined essentially by the distance of the nozzle opening to the inner sleeve lateral surface.
  • the nozzle arrangement has an air supply to a sleeve interior surrounded by the inner sleeve lateral surface and traversable by the water jet.
  • the sleeve interior is formed by the space in the interior of the nozzle sleeve, which is traversed by the water jet plus the space located by the safety distance between the sleeve shell surface and the water jet.
  • the air supply suppresses the formation of a negative pressure in the region between the inner sleeve lateral surface and the water jet.
  • Such a vacuum can occur at high velocity of the water jet by the entrainment of air inside the nozzle sleeve. In this case, the negative pressure can be so pronounced that the water jet is sucked to form turbulence and air bubbles on the inner sleeve outer surface.
  • the air supply is ensured by an air supply channel, which connects the sleeve interior with an air supply.
  • the air supply channel allows in a simple manner a targeted steering of the air entering the sleeve interior.
  • the air supply is formed by the outside air, wherein the air supply duct ends at one end in the outside air and the other end in the sleeve interior.
  • the air supply channel is connected via an air supply opening in the inner sleeve lateral surface with the sleeve interior.
  • the distance between the air supply opening and the nozzle plate is less than or equal to the distance of the nozzle opening to the inner sleeve lateral surface. This ensures that a pressure equalization with the outside environment takes place immediately above the nozzle plate. Particularly preferably, the air supply opening begins immediately above the nozzle plate.
  • the air supply channel is formed in an advantageous embodiment of the invention, at least in some areas as tube closed on the other side. This embodiment ensures a controlled guidance of the air flows.
  • the nozzle opening is preferably circular. As a result, the interface of the water jet is minimized to the ambient air after the exit of the water jet from the nozzle opening, so that the least possible friction is ensured. This minimizes the formation of turbulence and air bubbles in the water steel.
  • the nozzle sleeve is connected in one advantageous embodiment of the invention in one piece with the nozzle plate.
  • a simple and inexpensive production of the nozzle assembly is possible as an injection molded part.
  • the nozzle sleeve and / or the sleeve interior bounded by the inner sleeve lateral surface preferably have a cylindrical shape with a cross-sectional diameter that is greater than the diameter of the nozzle opening.
  • the safety distance is sufficiently dimensioned so that even with a water jet emerging through the nozzle opening and out of a sleeve outlet of the nozzle sleeve, air flows continuously through the sleeve outlet into the interior of the sleeve. Air entrained by the water jet is thereby constantly replaced by air flowing into the sleeve outlet, so that no negative pressure is created between the water jet and the inner sleeve lateral surface, which is sufficient to suck the water jet against the inner sleeve lateral surface. As a result, the formation of turbulence and air bubbles in the water jet due to friction of the water jet on the inner sleeve lateral surface is effectively prevented.
  • Fig. 1 and 2 show a first nozzle arrangement 2 according to the invention for producing a water jet 3, with a nozzle plate 4, which has a nozzle opening 6.
  • the water jet 3 is in the sectional views of Fig. 2 and Fig. 4 not shown.
  • the nozzle arrangement 2 has a nozzle sleeve 8 which projects over the nozzle opening 6 and has an inner sleeve lateral surface 10.
  • the inner sleeve lateral surface 10 surrounds a water jet 3 emerging from the nozzle opening 4 at a safety distance S, which in the ideal case is defined by the distance A of the sleeve lateral surface 10 to the nozzle opening 4. Due to the safety distance, an undesired contact of the water jet 3 with the inner sleeve lateral surface 10 is excluded.
  • the nozzle arrangement 2 has an air supply channel 12, which connects a sleeve interior 14, which is surrounded by the inner sleeve lateral surface 10 and can be traversed by the water jet 3, to an air reservoir 16.
  • the air supply 16 is formed in the embodiment of the outside air outside of the nozzle assembly 2.
  • the air supply channel 12 is connected via an air supply opening 18 in the inner sleeve lateral surface 10 with the sleeve interior 14.
  • the distance B between the air supply opening 18 and the nozzle plate 4 is smaller than the distance A of the nozzle opening 6 to the inner sleeve lateral surface 10.
  • the distance B is equal to zero cm, since the air supply opening 18 extends to the nozzle plate 4.
  • the air supply opening 18 of the air supply channel 12 extends in the inner sleeve lateral surface 10 in the flow direction of the water jet 3, represented by the arrow 20, to an end 22 of the nozzle sleeve 8.
  • the air supply opening 18 extends parallel to the longitudinal axis of the nozzle assembly 2, in the embodiment the flow direction 20 corresponds.
  • the air supply channel 12 is formed by a mold recess 24 in the inner sleeve lateral surface 10 and bounded by the nozzle sleeve 8. This embodiment allows a structurally simple and at the same time secure guidance and supply of outside air to the sleeve interior 14th
  • the nozzle assembly 4 has an outer nozzle sleeve 26, which encloses an inner nozzle sleeve, which corresponds to the nozzle sleeve 8 described above, but is spaced by a gap 28 from the inner nozzle sleeve 8 on the other side.
  • the air supply channel 12 is partially formed by the gap 28 and beyond by an opening 30 in the inner nozzle sleeve 8.
  • the outer nozzle sleeve 26 and the inner nozzle sleeve 8 preferably have the shape of cylinder shrouds.
  • the intermediate space 28 is not limited in the longitudinal extension 20 of the nozzle arrangement 2, which corresponds to the flow direction 20. This makes it easy to manufacture the nozzle assembly 2 as an injection molded product possible.
  • Fig. 5 shows a fountain jet generator 32 according to the invention with a nozzle arrangement 2 according to the invention in a sectional side view.

Abstract

The assembly (2) has a nozzle plate (4) with a nozzle opening. A nozzle casing (8) arranged on the nozzle plate sectionally flanges the nozzle opening. The nozzle casing has an inner casing lateral surface (10) surrounding a water jet (3) that is withdrawn from the nozzle opening, in a safety margin (s), and eliminates an unintentional contact with the water jet. An air supply is provided to a casing inner space (14) that surrounds the inner cover lateral surface. An air supply channel (12) connects the casing inner space with an air supply.

Description

Die Erfindung betrifft eine Düsenanordnung zur Erzeugung eines Wasserstrahls nach dem Oberbegriff des Anspruchs 1, sowie einen Fontänenstrahlerzeuger mit einer derartigen Düsenanordnung.The invention relates to a nozzle arrangement for generating a water jet according to the preamble of claim 1, and a fountain jet generator with such a nozzle arrangement.

Derartige Düsenanordnungen sind bekannt. Der Wasserstrahl schießt aus der Düsenöffnung heraus in einen für einen Betrachter einsehbaren Bereich. Der Wasserstrahl soll dabei eine möglichst turbulenz- und luftblasenfreie Strömung aufweisen, um als Lichtleiter verwendet werden zu können. Insbesondere in den Fällen, in denen der Fontänenstrahlerzeuger überwiegend unterhalb einer Wasseroberfläche verborgen bleiben soll und die Wasseroberfläche zumindest eine leichte Wellenbewegung aufweisen kann, ist bekannt, die Düsenöffnung zumindest um die Höhe des maximalen Wellengangs zu verlängern und aus der Wasseroberfläche hinausragen zu lassen. Hierdurch soll verhindert werden, daß Wellen des Gewässers auf den Wasserstrahl einwirken und dadurch Turbulenzen in dem Wasserstrahl auslösen. Nachteilig an derartigen Düsenanordnungen ist jedoch, daß im Bereich der Verlängerung Turbulenzen und Luftblasen im Wasserstrahl erzeugt werden, die teilweise durch Reibung zwischen dem Wasserstrahl und der Verlängerung der Düsenöffnung entstehen und teilweise durch van-der-Waals-Kräfte zwischen dem Wasserstrahl und der Verlängerung der Düsenöffnung erzeugt werden. Diese stören die Verwendung des Wasserstrahls als Lichtleiter.Such nozzle arrangements are known. The jet of water shoots out of the nozzle opening into a visible area for a viewer. The water jet should have a turbulence-free and air bubble-free flow in order to be used as a light guide can. In particular, in cases where the fountain jet generator is to remain hidden mainly below a water surface and the water surface may have at least a slight wave motion, it is known to extend the nozzle opening at least by the height of the maximum swell and protrude from the water surface. This is to prevent waves of the water body from acting on the water jet and thereby causing turbulence in the water jet. A disadvantage of such nozzle arrangements, however, that in the region of the extension turbulence and air bubbles are generated in the water jet, which arise in part by friction between the water jet and the extension of the nozzle opening and partly by van der Waals forces between the water jet and the extension of the Nozzle opening can be generated. These interfere with the use of the water jet as a light guide.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Düsenanordnung der eingangs genannten Art bereitzustellen, die auch in Gewässern mit einer Wellenbewegung einen besser als Lichtleiter nutzbaren Wasserstrahl erzeugen kann und dabei konstruktiv einfach und kostengünstig herstellbar ist.The invention is therefore an object of the invention to provide a nozzle assembly of the type mentioned, which can produce a better usable as a light guide water jet in a body with a wave motion and is structurally simple and inexpensive to produce.

Die Erfindung löst diese Aufgabe durch eine Düsenanordnung mit den Merkmalen des Patentanspruchs 1 sowie durch einen Fontänenstrahlerzeuger nach dem Patentanspruch 12 mit einer derartigen Düsenanordnung. Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen 2 bis 11 zu entnehmen.The invention solves this problem by a nozzle arrangement with the features of claim 1 and by a fountain jet generator according to claim 12 with such a nozzle arrangement. Further advantageous embodiments of the invention can be found in the dependent claims 2 to 11.

Durch das Vorsehen einer die Düsenöffnung zumindest bereichsweise umkragenden, auf der Düsenplatte angeordneten Düsenhülse mit einer inneren Hülsenmantelfläche, die einen aus der Düsenöffnung austretenden Wasserstrahl in einem Sicherheitsabstand umgibt, wird erreicht, daß der aus der Düsenöffnung austretende Wasserstrahl durch die Düsenhülse vor Wellen geschützt ist und gleichzeitig der Wasserstrahl durch Einhalten eines Sicherheitsabstands zur inneren Hülsenmantelfläche nicht die Mantelfläche berührt, so daß hier keine Turbulenzen infolge von Reibung und/oder van-der-Waals-Kräften entstehen können. Der Sicherheitsabstand ist dabei so gewählt, daß ein ungewollter Kontakt der Hülsenmantelfläche mit dem Wasserstrahl ausgeschlossen ist. Er ist unter anderem abhängig von der Form, der Größe und der Strömungsgeschwindigkeit des Wasserstrahls sowie von der Form und der Länge der Düsenhülse. Der Sicherheitsabstand wird dabei im wesentlichen durch den Abstand der Düsenöffnung zur inneren Hülsenmantelfläche definiert.By providing a nozzle opening at least partially projecting, arranged on the nozzle plate nozzle sleeve with an inner sleeve outer surface surrounding a nozzle jet from the water jet outlet at a safety distance, it is ensured that the emerging from the nozzle opening water jet is protected by the nozzle sleeve from waves and at the same time the jet of water does not touch the lateral surface by maintaining a safety distance to the inner sleeve lateral surface, so that no turbulence due to friction and / or van der Waals forces can arise here. The safety distance is chosen so that an unwanted contact of the sleeve casing surface is excluded with the water jet. Among other things, it depends on the shape, the size and the flow velocity of the water jet and on the shape and the length of the nozzle sleeve. The safety distance is defined essentially by the distance of the nozzle opening to the inner sleeve lateral surface.

Mit Vorteil weist die Düsenanordnung eine Luftzufuhr zu einem von der inneren Hülsenmantelfläche umgebenen und vom Wasserstrahl durchquerbaren Hülseninnenraum auf. Der Hülseninnenraum wird dabei von dem Raum im Inneren der Düsenhülse gebildet, der vom Wasserstrahl durchquert wird zuzüglich des durch den Sicherheitsabstand zwischen Hülsenmantelfläche und Wasserstrahl befindlichen Raumes. Durch die Luftzufuhr wird die Bildung eines Unterdrucks im Bereich zwischen der inneren Hülsenmantelfläche und dem Wasserstrahl unterdrückt. Ein derartiger Unterdruck kann bei hoher Geschwindigkeit des Wasserstrahls durch das Mitreißen von Luft im Inneren der Düsenhülse entstehen. Dabei kann der Unterdruck derart stark ausgeprägt sein, daß der Wasserstrahl unter Bildung von Turbulenzen und Luftblasen an die innere Hülsenmantelfläche gesaugt wird.Advantageously, the nozzle arrangement has an air supply to a sleeve interior surrounded by the inner sleeve lateral surface and traversable by the water jet. The sleeve interior is formed by the space in the interior of the nozzle sleeve, which is traversed by the water jet plus the space located by the safety distance between the sleeve shell surface and the water jet. The air supply suppresses the formation of a negative pressure in the region between the inner sleeve lateral surface and the water jet. Such a vacuum can occur at high velocity of the water jet by the entrainment of air inside the nozzle sleeve. In this case, the negative pressure can be so pronounced that the water jet is sucked to form turbulence and air bubbles on the inner sleeve outer surface.

In einer bevorzugten Ausgestaltung der Erfindung wird die Luftzufuhr durch einen Luftzufuhrkanal sichergestellt, der den Hülseninnenraum mit einem Luftvorrat verbindet. Der Luftzufuhrkanal ermöglicht in einfacher Weise eine gezielte Lenkung der in den Hülseninnenraum eintretenden Luft. Mit Vorteil wird dabei der Luftvorrat von der Außenluft gebildet, wobei der Luftzufuhrkanal einenends in der Außenluft und anderenends im Hülseninnenraum endet.In a preferred embodiment of the invention, the air supply is ensured by an air supply channel, which connects the sleeve interior with an air supply. The air supply channel allows in a simple manner a targeted steering of the air entering the sleeve interior. Advantageously, the air supply is formed by the outside air, wherein the air supply duct ends at one end in the outside air and the other end in the sleeve interior.

In einer vorteilhaften Ausgestaltung der Erfindung ist der Luftzufuhrkanal über eine Luftzufuhröffnung in der inneren Hülsenmantelfläche mit dem Hülseninnenraum verbunden. Durch diese Konstellation kann auf zusätzliche Elemente zur Einleitung der Luft in den Hülseninnenraum verzichtet werden, so daß Material eingespart werden kann und gleichzeitig die Luftzufuhr zuverlässig sichergestellt ist.In an advantageous embodiment of the invention, the air supply channel is connected via an air supply opening in the inner sleeve lateral surface with the sleeve interior. By this constellation can be dispensed with additional elements for introducing the air into the sleeve interior, so that material can be saved and at the same time the air supply is reliably ensured.

Der Abstand zwischen der Luftzufuhröffnung und der Düsenplatte ist kleiner oder gleich dem Abstand der Düsenöffnung zur inneren Hülsenmantelfläche. Hierdurch ist sichergestellt, daß ein Druckausgleich mit der Außenumgebung unmittelbar oberhalb der Düsenplatte erfolgt. Besonders bevorzugt beginnt die Luftzufuhröffnung dabei unmittelbar oberhalb der Düsenplatte.The distance between the air supply opening and the nozzle plate is less than or equal to the distance of the nozzle opening to the inner sleeve lateral surface. This ensures that a pressure equalization with the outside environment takes place immediately above the nozzle plate. Particularly preferably, the air supply opening begins immediately above the nozzle plate.

Der Luftzufuhrkanal wird in einer vorteilhaften Ausgestaltung der Erfindung zumindest bereichsweise als umseitig geschlossene Röhre ausgebildet. Diese Ausgestaltung gewährleistet eine kontrollierte Führung der Luftströme.The air supply channel is formed in an advantageous embodiment of the invention, at least in some areas as tube closed on the other side. This embodiment ensures a controlled guidance of the air flows.

Die Düsenöffnung ist bevorzugt kreisrund. Hierdurch ist die Grenzfläche des Wasserstrahls zur Umgebungsluft nach dem Austreten des Wasserstrahls aus der Düsenöffnung minimiert, so daß die geringstmögliche Reibung gewährleistet ist. Hierdurch wird die Bildung von Turbulenzen und Luftblasen im Wasserstahl minimiert.The nozzle opening is preferably circular. As a result, the interface of the water jet is minimized to the ambient air after the exit of the water jet from the nozzle opening, so that the least possible friction is ensured. This minimizes the formation of turbulence and air bubbles in the water steel.

Die Düsenhülse ist in einer vorteilhaften Ausgestaltung der Erfindung einstückig mit der Düsenplatte verbunden. Hierdurch ist eine einfach und kostengünstige Herstellung der Düsenanordnung als Spritzgußformteil möglich.The nozzle sleeve is connected in one advantageous embodiment of the invention in one piece with the nozzle plate. As a result, a simple and inexpensive production of the nozzle assembly is possible as an injection molded part.

Die Düsenhülse und/oder der durch die innere Hülsenmantelfläche begrenzte Hülseninnenraum haben bevorzugt eine zylindrische Form mit einem Querschnittsdurchmesser, der größer als der Durchmesser der Düsenöffnung ist.The nozzle sleeve and / or the sleeve interior bounded by the inner sleeve lateral surface preferably have a cylindrical shape with a cross-sectional diameter that is greater than the diameter of the nozzle opening.

Mit Vorteil ist der Sicherheitsabstand so ausreichend dimensioniert, daß auch bei einem durch die Düsenöffnung und aus einem Hülsenausgang der Düsenhülse austretenden Wasserstrahl permanent Luft durch den Hülsenausgang in den Hülseninnenraum nachströmt. Von dem Wasserstrahl mitgerissene Luft wird dadurch ständig durch in den Hülsenausgang einströmende Luft ersetzt, so daß auch hier kein Unterdruck zwischen dem Wasserstrahl und der inneren Hülsenmantelfläche entsteht, der ausreicht, den Wasserstrahl an die innere Hülsenmantelfläche zu saugen. Hierdurch wird die Bildung von Turbulenzen und Luftblasen im Wasserstrahl infolge von Reibung des Wasserstrahls an der inneren Hülsenmantelfläche wirksam unterbunden.Advantageously, the safety distance is sufficiently dimensioned so that even with a water jet emerging through the nozzle opening and out of a sleeve outlet of the nozzle sleeve, air flows continuously through the sleeve outlet into the interior of the sleeve. Air entrained by the water jet is thereby constantly replaced by air flowing into the sleeve outlet, so that no negative pressure is created between the water jet and the inner sleeve lateral surface, which is sufficient to suck the water jet against the inner sleeve lateral surface. As a result, the formation of turbulence and air bubbles in the water jet due to friction of the water jet on the inner sleeve lateral surface is effectively prevented.

Weitere Einzelheiten und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und den nachfolgen beschriebenen schematisch dargestellten Ausführungsbespielen; es zeigen:

Fig. 1
eine erfindungsgemäße Düsenanordnung in der Draufsicht,
Fig. 2
den Gegenstand aus Fig. 1 in nach der Linie II-II geschnittener Seitenansicht,
Fig. 3
eine weitere erfindungsgemäße Düsenanordnung in der Draufsicht,
Fig. 4
den Gegenstand aus Fig. 3 in nach der Linie IV-IV geschnittener Seitenansicht und
Fig. 5
einen erfindungsgemäßen Fontänenstrahlerzeuger.
Further details and advantageous embodiments of the invention will become apparent from the dependent claims and the following described schematically illustrated Ausführungsbespielen; show it:
Fig. 1
a nozzle arrangement according to the invention in plan view,
Fig. 2
the object out Fig. 1 in side view taken along the line II-II,
Fig. 3
a further nozzle arrangement according to the invention in plan view,
Fig. 4
the object out Fig. 3 in sectioned line IV-IV side view and
Fig. 5
a fountain jet generator according to the invention.

Nachfolgend werden gleichwirkende Teile der Erfindung mit einer einheitlichen Bezugsziffer versehen.Hereinafter, equivalent parts of the invention are provided with a common reference numeral.

Fig. 1 und 2 zeigen eine erste erfindungsgemäße Düsenanordnung 2 zur Erzeugung eines Wasserstrahls 3, mit einer Düsenplatte 4, die eine Düsenöffnung 6 aufweist. Der Wasserstrahl 3 ist in den Schnittdarstellungen der Fig. 2 und Fig. 4 nicht dargestellt. Die Düsenanordnung 2 weist eine die Düsenöffnung 6 umkragende Düsenhülse 8 mit einer inneren Hülsenmantelfläche 10 auf. Die innere Hülsenmantelfläche 10 umgibt einen aus der Düsenöffnung 4 austretenden Wasserstrahl 3 in einem Sicherheitsabstand S, der im Idealfall durch den Abstand A der Hülsenmantelfläche 10 zur Düsenöffnung 4 definiert ist. Durch den Sicherheitsabstand ist ein ungewollter Kontakt des Wasserstrahls 3 mit der inneren Hülsenmantelfläche 10 ausgeschlossen. Fig. 1 and 2 show a first nozzle arrangement 2 according to the invention for producing a water jet 3, with a nozzle plate 4, which has a nozzle opening 6. The water jet 3 is in the sectional views of Fig. 2 and Fig. 4 not shown. The nozzle arrangement 2 has a nozzle sleeve 8 which projects over the nozzle opening 6 and has an inner sleeve lateral surface 10. The inner sleeve lateral surface 10 surrounds a water jet 3 emerging from the nozzle opening 4 at a safety distance S, which in the ideal case is defined by the distance A of the sleeve lateral surface 10 to the nozzle opening 4. Due to the safety distance, an undesired contact of the water jet 3 with the inner sleeve lateral surface 10 is excluded.

Die Düsenanordnung 2 weist einen Luftzufuhrkanal 12 auf, der einen von der inneren Hülsenmantelfläche 10 umgebenen und vom Wasserstrahl 3 durchquerbaren Hülseninnenraum 14 mit einem Luftvorrat 16 verbindet. Der Luftvorrat 16 wird dabei in dem Ausführungsbeispiel von der Außenluft außerhalb der Düsenanordnung 2 gebildet. Dabei ist der Luftzufuhrkanal 12 über eine Luftzufuhröffnung 18 in der inneren Hülsenmantelfläche 10 mit dem Hülseninnenraum 14 verbunden.The nozzle arrangement 2 has an air supply channel 12, which connects a sleeve interior 14, which is surrounded by the inner sleeve lateral surface 10 and can be traversed by the water jet 3, to an air reservoir 16. The air supply 16 is formed in the embodiment of the outside air outside of the nozzle assembly 2. In this case, the air supply channel 12 is connected via an air supply opening 18 in the inner sleeve lateral surface 10 with the sleeve interior 14.

Der Abstand B zwischen der Luftzufuhröffnung 18 und der Düsenplatte 4 ist kleiner als der Abstand A der Düsenöffnung 6 zur inneren Hülsenmantelfläche 10. Im Ausführungsbeispiel ist der Abstand B gleich Null cm, da sich die Luftzufuhröffnung 18 bis zur Düsenplatte 4 erstreckt. Die Luftzufuhröffnung 18 des Luftzufuhrkanals 12 erstreckt sich in der inneren Hülsenmantelfläche 10 in Strömungsrichtung des Wasserstrahls 3, dargestellt durch den Pfeil 20, bis zu einem Ende 22 der Düsenhülse 8. Zudem erstreckt sich die Luftzufuhröffnung 18 parallel zur Längsachse der Düsenanordnung 2, die im Ausführungsbeispiel der Strömungsrichtung 20 entspricht. Hierdurch ist eine einfache Fertigung der Düsenanordnung 2 als Spritzgußteil ohne zusätzliche Schieber möglich. Der Luftzufuhrkanal 12 wird dabei von einer Formausnehmung 24 in der inneren Hülsenmantelfläche 10 gebildet und von der Düsenhülse 8 begrenzt. Diese Ausgestaltung ermöglicht eine konstruktiv einfache und gleichzeitig sichere Führung und Zuleitung von Außenluft zum Hülseninnenraum 14.The distance B between the air supply opening 18 and the nozzle plate 4 is smaller than the distance A of the nozzle opening 6 to the inner sleeve lateral surface 10. In the exemplary embodiment, the distance B is equal to zero cm, since the air supply opening 18 extends to the nozzle plate 4. The air supply opening 18 of the air supply channel 12 extends in the inner sleeve lateral surface 10 in the flow direction of the water jet 3, represented by the arrow 20, to an end 22 of the nozzle sleeve 8. In addition, the air supply opening 18 extends parallel to the longitudinal axis of the nozzle assembly 2, in the embodiment the flow direction 20 corresponds. As a result, a simple production of the nozzle assembly 2 as an injection molded part without additional slide is possible. The air supply channel 12 is formed by a mold recess 24 in the inner sleeve lateral surface 10 and bounded by the nozzle sleeve 8. This embodiment allows a structurally simple and at the same time secure guidance and supply of outside air to the sleeve interior 14th

Fig. 3 und 4 zeigen eine alternative Ausgestaltung des Luftzufuhrkanals 12. Die Düsenanordnung 4 weist eine äußere Düsenhülse 26 auf, die eine innere Düsenhülse, die der zuvor beschriebenen Düsenhülse 8 entspricht, umschließt, jedoch durch einen Zwischenraum 28 von der inneren Düsenhülse 8 umseitig beabstandet ist. Dabei wird der Luftzufuhrkanal 12 bereichsweise von dem Zwischenraum 28 und darüber hinaus von einem Durchbruch 30 in der inneren Düsenhülse 8 gebildet. Die äußere Düsenhülse 26 und die innere Düsenhülse 8 haben bevorzugt die Form von Zylindermänteln. 3 and 4 show an alternative embodiment of the air supply channel 12. The nozzle assembly 4 has an outer nozzle sleeve 26, which encloses an inner nozzle sleeve, which corresponds to the nozzle sleeve 8 described above, but is spaced by a gap 28 from the inner nozzle sleeve 8 on the other side. In this case, the air supply channel 12 is partially formed by the gap 28 and beyond by an opening 30 in the inner nozzle sleeve 8. The outer nozzle sleeve 26 and the inner nozzle sleeve 8 preferably have the shape of cylinder shrouds.

Der Zwischenraum 28 ist in Längserstreckung 20 der Düsenanordnung 2, die der Strömungsrichtung 20 entspricht, nicht begrenzt. Hierdurch ist eine einfach Fertigung der Düsenanordnung 2 als Spritzgußerzeugnis möglich.The intermediate space 28 is not limited in the longitudinal extension 20 of the nozzle arrangement 2, which corresponds to the flow direction 20. This makes it easy to manufacture the nozzle assembly 2 as an injection molded product possible.

Fig. 5 zeigt einen erfindungsgemäßen Fontänenstrahlerzeuger 32 mit einer erfindungsgemäßen Düsenanordnung 2 in geschnittener Seitenansicht. Fig. 5 shows a fountain jet generator 32 according to the invention with a nozzle arrangement 2 according to the invention in a sectional side view.

Claims (12)

Düsenanordnung (2) zur Erzeugung eines Wasserstrahls (3), mit einer Düsenplatte (4), die eine Düsenöffnung (6) aufweist, gekennzeichnet durch eine die Düsenöffnung (6) zumindest bereichsweise umkragende, auf der Düsenplatte (4) angeordnete Düsenhülse (8) mit einer inneren Hülsenmantelfläche (10), die einen aus der Düsenöffnung (6) austretenden Wasserstrahl (3) in einem Sicherheitsabstand (S) umgibt, der einen ungewollten Kontakt mit dem Wasserstrahl (3) ausschließt.Nozzle arrangement (2) for producing a water jet (3), having a nozzle plate (4), which has a nozzle opening (6), characterized by a nozzle sleeve (8), which projects over the nozzle opening (6) at least partially and projects over the nozzle plate (4). with an inner sleeve lateral surface (10) which surrounds a water jet (3) emerging from the nozzle opening (6) at a safety distance (S) which precludes unwanted contact with the water jet (3). Düsenanordnung (2) nach Anspruch 1, gekennzeichnet durch eine Luftzufuhr zu einem von der inneren Hülsenmantelfläche (10) umgebenen und vom Wasserstrahl (3) durchquerbaren Hülseninnenraum (14).Nozzle arrangement (2) according to Claim 1, characterized by an air supply to a sleeve interior (14) which is surrounded by the inner sleeve lateral surface (10) and can be traversed by the water jet (3). Düsenanordnung (2) nach Anspruch 2, gekennzeichnet durch einen Luftzufuhrkanal (12), der den Hülseninnenraum (14) mit einem Luftvorrat (16) verbindet.Nozzle arrangement (2) according to claim 2, characterized by an air supply channel (12) which connects the sleeve interior (14) with an air reservoir (16). Düsenanordnung (2) nach Anspruch 3, dadurch gekennzeichnet, daß der Luftzufuhrkanal (12) über eine Luftzufuhröffnung (18) in der inneren Hülsenmantelfläche (10) mit dem Hülseninnenraum (14) verbunden ist.Nozzle arrangement (2) according to Claim 3, characterized in that the air supply channel (12) is connected to the sleeve interior (14) via an air feed opening (18) in the inner sleeve lateral surface (10). Düsenanordnung (2) nach Anspruch 4, dadurch gekennzeichnet, daß der Abstand (B) zwischen der Luftzufuhröffnung (18) und der Düsenplatte (4) kleiner oder gleich dem Abstand (A) der Düsenöffnung (6) zur inneren Hülsenmantelfläche (10) ist.Nozzle arrangement (2) according to claim 4, characterized in that the distance (B) between the air supply opening (18) and the nozzle plate (4) is less than or equal to the distance (A) of the nozzle opening (6) to the inner sleeve lateral surface (10). Düsenanordnung (2) nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß sich die Luftzufuhröffnung (18) des Luftzufuhrkanals (12) in der inneren Hülsenmantelfläche (10) in Strömungsrichtung (20) des Wasserstrahls (3) bis zu einem Ende der Düsenhülse (22) erstreckt.Nozzle arrangement (2) according to claim 4 or 5, characterized in that the air supply opening (18) of the air supply channel (12) in the inner sleeve lateral surface (10) in the flow direction (20) of the water jet (3) up to an end of the nozzle sleeve (22 ). Düsenanordnung (2) nach Anspruch 6, dadurch gekennzeichnet, daß der Luftzufuhrkanal (12) von einer Formausnehmung (24) in der inneren Hülsenmantelfläche (10) gebildet und von der Düsenhülse (8) begrenzt wird.Nozzle arrangement (2) according to Claim 6, characterized in that the air supply channel (12) is formed by a molding recess (24) in the inner sleeve lateral surface (10) and bounded by the nozzle sleeve (8). Düsenanordnung (2) nach einem der Ansprüche 4 bis 6, gekennzeichnet durch eine äußere Düsenhülse (26), die die innere Düsenhülse (8) beabstandet durch einen Zwischenraum (28) umseitig umschließt, wobei der Luftzufuhrkanal (12) zumindest bereichsweise von dem Zwischenraum (28) gebildet wird.Nozzle arrangement (2) according to one of Claims 4 to 6, characterized by an outer nozzle sleeve (26) which surrounds the inner nozzle sleeve (8) at a distance from one another by a gap (28), the air supply channel (12) being separated from the intermediate space (at least in places). 28) is formed. Düsenanordnung (2) nach Anspruch 8, dadurch gekennzeichnet, daß der Zwischenraum (28) in Längserstreckung (20) der Düsenanordnung (2) ohne Begrenzung ist.Nozzle arrangement (2) according to claim 8, characterized in that the intermediate space (28) in the longitudinal extent (20) of the nozzle arrangement (2) is without limitation. Düsenanordnung (2) nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der Luftzufuhrkanal (12) zumindest bereichsweise als umseitig geschlossene Röhre ausgebildet ist.Nozzle arrangement (2) according to claim 4 or 5, characterized in that the air supply channel (12) is formed, at least in regions, as a tube closed on the reverse side. Düsenanordnung (2) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Sicherheitsabstand (S) so ausreichend dimensioniert ist, daß auch bei einem durch die Düsenöffnung (6) und aus einem Hülsenausgang der Düsenhülse (8) austretenden Wasserstrahl (3) permanent Luft durch den Hülsenausgang in den Hülseninnenraum (14) nachströmt.Nozzle arrangement (2) according to claim 1 or 2, characterized in that the safety distance (S) is sufficiently dimensioned such that even at a through the nozzle opening (6) and water jet (3) emerging from a sleeve outlet of the nozzle sleeve (8) constantly flows in air through the sleeve outlet into the sleeve interior (14). Fontänenstrahlerzeuger (32), gekennzeichnet durch eine Düsenanordnung (2) nach einem der vorhergehenden Ansprüche.Fountain jet generator (32), characterized by a nozzle arrangement (2) according to one of the preceding claims.
EP20080004431 2007-03-23 2008-03-11 Nozzle array for creating a water stream Active EP1972381B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710014629 DE102007014629A1 (en) 2007-03-23 2007-03-23 Nozzle arrangement for generating a water jet

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EP1972381A2 true EP1972381A2 (en) 2008-09-24
EP1972381A3 EP1972381A3 (en) 2011-05-11
EP1972381B1 EP1972381B1 (en) 2014-06-25

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US (1) US8162234B2 (en)
EP (1) EP1972381B1 (en)
CN (1) CN101269357B (en)
CA (1) CA2626274A1 (en)
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CN106861996B (en) * 2017-02-22 2018-12-11 李欣泽 A kind of intermittent fountain built using wave

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB495915A (en) 1937-11-20 1938-11-22 Drysdale & Co Ltd Improvements in or relating to water discharge nozzle devices
US3330486A (en) 1965-06-14 1967-07-11 Rain Jet Corp Aerating nozzle
US3684175A (en) 1971-05-27 1972-08-15 Rain Jet Corp Reverberating liquid discharge device having random discharge pattern

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Publication number Priority date Publication date Assignee Title
US2366354A (en) * 1940-10-15 1945-01-02 Douglas Robbins And Company Paper machine cleaner
US3533553A (en) * 1968-07-30 1970-10-13 Meridian Enterprises Inc Aerating fountain device
US3749311A (en) * 1970-10-05 1973-07-31 Rain Jet Corp Ornamental fountain with multi-tier or horizontal discharge patterns
US4795092A (en) * 1985-11-25 1989-01-03 Wet Enterprises, Inc. Laminar flow nozzle
CN86107184B (en) * 1986-10-21 1988-02-10 冶金工业部北京钢铁设计研究总院 Adjustable return water jet nozzle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB495915A (en) 1937-11-20 1938-11-22 Drysdale & Co Ltd Improvements in or relating to water discharge nozzle devices
US3330486A (en) 1965-06-14 1967-07-11 Rain Jet Corp Aerating nozzle
US3684175A (en) 1971-05-27 1972-08-15 Rain Jet Corp Reverberating liquid discharge device having random discharge pattern

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US8162234B2 (en) 2012-04-24
EP1972381A3 (en) 2011-05-11
DE102007014629A1 (en) 2008-09-25
CA2626274A1 (en) 2008-09-23
EP1972381B1 (en) 2014-06-25
US20080230130A1 (en) 2008-09-25
CN101269357B (en) 2012-06-13
CN101269357A (en) 2008-09-24

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