EP0284763A2 - Jet regulator with a strainer attachment, and method for manufacturing such a jet regulator - Google Patents

Jet regulator with a strainer attachment, and method for manufacturing such a jet regulator Download PDF

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Publication number
EP0284763A2
EP0284763A2 EP88102425A EP88102425A EP0284763A2 EP 0284763 A2 EP0284763 A2 EP 0284763A2 EP 88102425 A EP88102425 A EP 88102425A EP 88102425 A EP88102425 A EP 88102425A EP 0284763 A2 EP0284763 A2 EP 0284763A2
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EP
European Patent Office
Prior art keywords
support pin
jet regulator
screen
regulator according
outer edge
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
EP88102425A
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German (de)
French (fr)
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EP0284763B1 (en
EP0284763A3 (en
Inventor
Dieter Dipl.-Ing. Wildfang
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Neoperl GmbH
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Dieter Wildfang GmbH
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Publication date
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Priority to AT88102425T priority Critical patent/ATE65274T1/en
Publication of EP0284763A2 publication Critical patent/EP0284763A2/en
Publication of EP0284763A3 publication Critical patent/EP0284763A3/en
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Publication of EP0284763B1 publication Critical patent/EP0284763B1/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/08—Jet regulators or jet guides, e.g. anti-splash devices

Definitions

  • the invention relates to a jet regulator with a mouthpiece forming an outer housing, in which, in the direction of flow, an attachment screen held at its outer edge and further installation parts are arranged behind it.
  • Such front screens serve as a protective screen, in particular in order to protect the through openings of the subsequent built-in parts from becoming clogged with dirt particles.
  • the front screen can be made of metal with wire mesh or as a plastic part. Because of the simpler manufacturing option, among other things, it is often desirable to design the front screen as a plastic part, in particular as a molded part.
  • the front strainer is exposed to the water pressure and, over time, to an increasing pressure when the cross-section of the passage is reduced due to the accumulation of dirt particles. This load can be absorbed by appropriate choice of material and material thickness, also in connection with a shape of the sieve that is provided against the direction of flow.
  • the object of the present invention is to provide a front screen for a jet regulator which has a short passage length, that is to say a comparatively small material thickness, but which, on the other hand, is dimensionally stable even at high water temperature and / or water pressure and / or strong solid deposition and in which vibrations leading to undesirable noise formation can also be avoided under these unfavorable conditions.
  • the front screen has an additional holder acting on its screen surface within its outer edge.
  • the front screen is supported on its previously “self-supporting" screen surface, so that the screen surface is also made correspondingly thin can be without the other disadvantages associated therewith - tendency to vibrate, pushing through and the like - can occur. Also, due to the small wall thickness, only very short guide lengths within the mesh are obtained in the desired manner.
  • the additional holder is formed by at least one support pin, tube or the like, which acts centrally on the screen surface and is optionally connected to it, and which is supported on or connected to a built-in part which is adjacent on the downstream side.
  • a particularly preferred embodiment of the invention consists in that the free end of the support pin is designed as a gating point for the plastic screen that is integrally connected to the support pin.
  • the invention also relates to a method for producing a jet regulator, which is provided with a one-piece plastic screen.
  • a jet regulator which is provided with a one-piece plastic screen.
  • the invention proposes in particular in the aforementioned method that the face screen is sprayed from the free end of its support pin or the like.
  • a jet regulator 1 shown in FIG. 1 can be screwed with its internal thread 2 onto the outlet end of a fitting, not shown here.
  • the direction of flow is indicated by the arrow Pf 1.
  • the jet regulator 1 essentially has a mouthpiece which forms an outer housing 3 and in which, in the direction of flow, an attachment screen 5 held at its outer edge 4 is arranged, followed by a jet separator 6 and further installation parts (not shown here).
  • the outer edge 4 of the front screen 5 is inserted into a cup-like receptacle 15 of the jet splitter 6 and is covered from the inflow side by a sealing ring 7.
  • the facing strainer 5 is convexly curved towards the inflow side.
  • a support pin 10 acting centrally on the inside of the bulge is provided as an additional holder 9 for the screen surface 8 within the outer edge 4.
  • the length of this support pin 10 is such that it can be supported on an installation part adjacent to the outflow side, in particular the jet splitter 6. Through this support pin 10 or the like. A considerable additional stabilization of the screen surface 8 is obtained, so that it is comparatively thin without disadvantages can be formed.
  • the cross section of the support pin 10 is such that it takes up little space in comparison to the entire screen surface 8, which can also be seen in FIG. 3, among other things. Due to the support pin 10 arranged here on the other side, the total number of passage openings 11 is reduced by only two. The total flow passage is practically not affected.
  • the front screen consists of a plastic injection-molded part, the support pin 10 or the like being integrally connected to the front screen 5.
  • a tube can also be provided instead of a cylindrical support pin made of solid material.
  • the support pin 10 'cross-shaped consists of intersecting webs 14 (Fig.4), the webs are preferably arranged so that they run between rows of openings. Such webs can then also extend over a somewhat larger area than the support pin 10 which can be seen in FIGS. 1 and 2, without covering through openings 11.
  • a conical or otherwise shaped design of a support pin 10 is also conceivable, the shape being able to be designed, among other things, in the sense of flow guidance. If necessary, a plurality of support pins 10 or the like can also be provided distributed over the screen surface 8.
  • the support pin 10 or the like can also be connected to an installation part arranged in the flow direction behind the front screen 5, in particular the jet splitter 6 located there, or can also be connected to it as a separate part.
  • the free end of this support pin then points against the direction of flow and lies on the inside of the front screen 5.
  • a central support pin 10 when arranged, for additional stabilization of the screen surface 8, its material thickness can be dimensioned in accordance with the bending load that occurs, the material thickness in particular decreasing from the edge towards the center.
  • An embodiment of the invention is that the support pin 10 or the like.
  • Additional bracket 9 for the front screen 5 with a component arranged in the flow direction behind the front screen, z. B. the jet regulator 6, is preferably connected in one piece.
  • Such a support pin can be carried out stably with a wide base.
  • a particularly advantageous embodiment, on the other hand, is that the support pin 10 or the like.
  • Additional holder 9 for the front screen 5 is integrally connected to this front screen 5. Then attachment screen 5 and support pin 10 or the like. Additional holder 9 form a single component that can be jointly manufactured and installed in the jet regulator. Designs of the jet regulator 6 that are already in use do not need to be changed.
  • the front screen 5, together with the support pin 10 attached to it in one piece consists of a plastic injection-molded part.
  • a screen 5 made of plastic can, for. B. be well designed in cross-section such that it faces convexly curved with its top of the inflow side of the jet regulator. A favorable support is obtained if the support pin 10 or the like.
  • Additional holder 9 is located centrally on the inside of the bulge of the front screen 5 is attached in one piece. Also, with such a prefabricated sieve 5 made of plastic, the material thickness of the sieve surface 8 can decrease from the outer edge 4 to the center without producing technical difficulties.
  • the free end 12 of the support pin 10 is designed as a gating point for the plastic screen that is integrally connected to this support pin 10.
  • the front screen 5 can be made in one piece from plastic using a method which is characterized in that the front screen 5 is injected from the free end 12 of its central support pin 10 or the like.
  • Central additional holder 9. Experiments have shown the following: If the injection point, also called “injection point” in specialist circles, is arranged for the front screen 5 at the free end 12 of the support pin 10 or the like, not only is the spraying itself easier, but also a uniform one , symmetrical material distribution during spraying and cooling of the spray material favors. This method of production in turn increases the quality, in particular the uniform strength, of the entire screen. Under otherwise identical conditions, especially with the same dimensions and materials, a particularly stable attachment screen 5 is obtained in this way practically without additional effort.
  • the support pin 10 is shown as a substantially fully cylindrical plastic part. This has the advantage, among other things, that the injection mold can be manufactured easily. However, one can also form the support pin 10 ⁇ , as shown in FIG. 4 somewhat distorted in the dimensions, in a cross shape, so that it is composed of intersecting webs 14, the z. B. can be matched to the passage openings 11 of the sieve surface 8 in such a way that the flow through the sieve surface 8 is prevented as little as possible with a comparatively great bending rigidity of this cross-shaped support pin 10 ⁇ . In Fig. 2 can be seen in the left part indicated by dash-dotted lines a somewhat modified form of a support pin 10 ⁇ .
  • Such a support pin 10 ⁇ is, on the one hand, favorable in terms of fluid flow for the medium flowing through, and on the other hand is advantageous in terms of production, in particular when ejecting a plastic part from the injection mold.
  • the arrow A in FIG. 2 shows the direction of view for the front view of the cross-shaped support pin 10 according to FIG. 4.
  • Such a support pin 10 ⁇ deviating from the round cross-sectional shape according to FIG. 1 can also be tapered with respect to its cross-section in the direction of its free end 12.
  • the material thickness d of the screen surface 8 decreases from the outer edge 4 towards the center. Accordingly, the material thickness d in the vicinity of the outer edge 4 is somewhat greater than the corresponding thickness d 1 in the vicinity of the support pin 10. In addition, it can be seen from FIGS. 1 and 2 that the outer edge 4 is integrally connected to the screen surface.

Abstract

The jet regulator (1) is provided with a mouthpiece which forms an outer housing (3) and in which, in the flow direction, firstly a strainer attachment (5), held on its outer edge (4), and behind this further assembly parts (6) are arranged. The strainer attachment (5) in this arrangement has an additional holding device (9) which engages inside its outer edge (4) on its screening surface (8) and which preferably consists of a supporting pin (10) integrally joined to the strainer attachment (5). In a method for manufacturing a jet regulator (1) with an integral strainer attachment (5) of plastic, provision is made for the strainer attachment (5) to be injection-moulded from the free end (12) of its central supporting pin (10) or similar additional holding device (9). <IMAGE>

Description

Die Erfindung betrifft einen Strahlregler mit einem ein Außengehäuse bildenden Mundstück, in welchem in Strömung­richtung zuerst ein an seinem Außenrand gehaltenes Vor­satzsieb und dahinter weitere Einbauteile angeordnet sind.The invention relates to a jet regulator with a mouthpiece forming an outer housing, in which, in the direction of flow, an attachment screen held at its outer edge and further installation parts are arranged behind it.

Solche Vorsatzsiebe dienen als Schutzsieb, insbesondere um die Durchgangsöffnungen der nachfolgenden Einbauteile vor einem Verstopfen mit Schmutzteilchen zu schützen. Das Vorsatzsieb kann in Metallausführung mit Drahtge­flecht oder aber als Kunststoffteil ausgebildet sein. Unter anderem wegen der einfacheren Fertigungsmöglich­keit ist es häufig erwünscht, das Vorsatzsieb als Kunststoffteil, insbesondere als Spritzteil auszubilden. Das Vorsatzsieb ist dem Wasserdruck und mit der Zeit auch einem zunehmenden Druck bei Verkleinerung des Durchtrittsquerschnittes durch sich anlagernde Schmutzteilchen ausgesetzt. Diese Belastung kann durch entsprechende Materialauswahl und Material­dicke, auch in Verbindung mit einer entgegen der Strö­mungsrichtung vorgesehenen Ausformung des Siebes abge­fangen werden. Andererseits ist es jedoch erwünscht, das Sieb in Durchströmrichtung möglichst dünn auszubil­den, um den Durchgangswiderstand klein zu halten und um einen nachfolgenden Strahlzerleger nicht ungünstig zu beeinflussen. Bei größerer Wandungsdicke würde sich nämliche eine entsprechend große Führungslänge für das Wasser innerhalb der Durchtrittsmaschen des Siebes er­geben, so daß zahlreiche scharfe Einzelstrahlen erzeugt würden, die unter anderem auch zu einer verstärkten, unerwünschten Geräuschbildung führen können. Eine solche Geräuschbildung kann aber bei dünner Ausbil­dung des Siebes auch durch Schwingungen des Siebes selbst auftreten, so daß man schon aus diesem Grunde die Siebdicke nicht allein im Sinne einer kurzen Führungs­länge dimensionieren kann. Hinzu kommt, daß durch höhere Wassertemperaturen der verwendete Kunststoff etwas weicher wird, so daß auch dadurch eine erhöhte Schwingneigung vorhanden sein kann. Bei ungünstigem Zusammentreffen von hohem Wasserdruck, Feststoffab­lagerung von dem Sieb und hoher Wassertemperatur kann es bei ausgeformten Sieben auch zu einem Durchknicken kommen.Such front screens serve as a protective screen, in particular in order to protect the through openings of the subsequent built-in parts from becoming clogged with dirt particles. The front screen can be made of metal with wire mesh or as a plastic part. Because of the simpler manufacturing option, among other things, it is often desirable to design the front screen as a plastic part, in particular as a molded part. The front strainer is exposed to the water pressure and, over time, to an increasing pressure when the cross-section of the passage is reduced due to the accumulation of dirt particles. This load can be absorbed by appropriate choice of material and material thickness, also in connection with a shape of the sieve that is provided against the direction of flow. On the other hand, however, it is desirable to make the sieve as thin as possible in the flow direction in order to keep the volume resistance low and in order not to adversely affect a subsequent jet splitter. With a larger wall thickness would namely a correspondingly large guide length for the water within the mesh of the sieve, so that numerous sharp individual jets would be generated, which, among other things, can also lead to increased, undesirable noise formation. Such noise formation can also occur with a thin design of the screen due to vibrations of the screen itself, so that for this reason alone the screen thickness cannot be dimensioned in the sense of a short guide length alone. In addition, the plastic used becomes somewhat softer due to higher water temperatures, so that there may also be an increased tendency to oscillate. In the event of an unfavorable coincidence of high water pressure, solid deposition from the sieve and high water temperature, buckling may also occur in the case of shaped sieves.

Aufgabe der vorliegenden Erfindung ist es, ein Vorsatz­sieb für einen Strahlregler zu schaffen, welches eine geringe Durchtrittslänge, das heißt eine vergleichsweise geringe Materialdicke aufweist, daß andererseits aber auch bei hoher Wassertemperatur und/oder Wasserdruck und/oder starker Feststoffablagerung, formbeständig ist und bei dem auch unter diesen ungünstigen Bedingungen zu unerwünschter Geräuschbildung führende Schwingungen vermieden werden.The object of the present invention is to provide a front screen for a jet regulator which has a short passage length, that is to say a comparatively small material thickness, but which, on the other hand, is dimensionally stable even at high water temperature and / or water pressure and / or strong solid deposition and in which vibrations leading to undesirable noise formation can also be avoided under these unfavorable conditions.

Zur Lösung dieser Aufgabe wird erfindungsgemäß insbe­sondere vorgeschlagen, daß das Vorsatzsieb eine inner­halb seines Außenrandes an seiner Siebfläche angreifende Zusatzhalterung aufweist.
Durch diese Zusatzhalterung wird das Vorsatzsieb an seiner bisher "freitragenden" Siebfläche abgestützt, so daß die Siebfläche auch entsprechend dünn ausgebildet sein kann, ohne daß die sonst damit verbundenen Nachteile - Schwingneigung, Durchdrücken und dgl. - auftreten können. Auch erhält man durch die geringe Wandungsstärke in erwünschter Weise nur sehr kurze Führungslängen innerhalb der Siebmaschen.To achieve this object, it is proposed according to the invention in particular that the front screen has an additional holder acting on its screen surface within its outer edge.
By means of this additional holder, the front screen is supported on its previously "self-supporting" screen surface, so that the screen surface is also made correspondingly thin can be without the other disadvantages associated therewith - tendency to vibrate, pushing through and the like - can occur. Also, due to the small wall thickness, only very short guide lengths within the mesh are obtained in the desired manner.

Eine bevorzugte Ausführungsform sieht vor, daß die Zu­satzhalterung durch wenigstens einen, vorzugsweise zentral an der Siebfläche angreifenden und gegebenenfalls mit dieser verbundenen Stützstift, Röhrchen od. dgl. gebildet ist,der sich an einem abströmseitig benachbarten Einbau­teil abstützt oder mit diesem verbunden ist.
Diese Ausführungsformen lassen sich räumlich gut unter­bringen und sich auch gut auf vorhandene Anordnungen von Einbauteilen abzustimmen.A preferred embodiment provides that the additional holder is formed by at least one support pin, tube or the like, which acts centrally on the screen surface and is optionally connected to it, and which is supported on or connected to a built-in part which is adjacent on the downstream side.
These embodiments can be accommodated well in terms of space and can also be adapted well to existing arrangements of built-in parts.

Eine besonders bevorzugte Ausführungsform der Erfindung besteht darin, daß das freie Ende des Stützstiftes als Anspritzstelle für das aus Kunststoff bestehende, einstückig mit dem Stützstift verbundene Vorsatzsieb ausgebildet ist.A particularly preferred embodiment of the invention consists in that the free end of the support pin is designed as a gating point for the plastic screen that is integrally connected to the support pin.

Die Erfindung betrifft auch ein Verfahren zum Herstellen eines Strahlreglers, der mit einem einstückigen Vorsatz­sieb aus Kunststoff versehen ist. Um bei diesem Strahl­regler ein möglichst in Durchströmrichtung dünnes, dabei jedoch stabiles Vorsatzsieb zu erhalten, schlägt die Er­findung beim vorgenannten Verfahren insbesondere vor, daß das Vorsatzsieb vom freien Ende sines Stützstiftes od. dgl. her gespritzt wird.The invention also relates to a method for producing a jet regulator, which is provided with a one-piece plastic screen. In order to obtain, with this jet regulator, a face screen that is as thin as possible in the direction of flow, but stable, the invention proposes in particular in the aforementioned method that the face screen is sprayed from the free end of its support pin or the like.

Zusätzliche Ausgestaltungen der Erfindung sind in weiteren Unteransprüchen aufgeführt. Nachstehend ist die Erfindung mit ihren wesentlichen Einzelheiten anhand von vorteilhaften Ausführungsbeispielen näher beschrieben.Additional embodiments of the invention are listed in further subclaims. The invention is described in more detail below with its essential details using advantageous exemplary embodiments.

Es zeigt :

  • Fig. 1 eine halbseitig im Teilschnitt gehaltene Seiten­ansicht eines Strahlreglers,
  • Fig. 2 eine Seitenansicht eines Vorsatzsiebes im Halb­schnitt,
  • Fig. 3 eine Aufsicht eines Vorsatzsiebes und
  • Fig. 4 eine Stirnansicht des Stützstiftes.
It shows :
  • 1 is a half-sectioned side view of a jet regulator,
  • 2 is a side view of a front screen in half section,
  • Fig. 3 is a plan view of a front screen and
  • Fig. 4 is an end view of the support pin.

Ein in Fig. 1 gezeigter Strahlregler 1 ist mit seinem Innengewinde 2 auf das Auslaufende einer hier nicht dargestellten Armatur aufschraubbar. Die Strömungs­richtung ist durch den Pfeil Pf 1 gekennzeichnet. Der Strahlregler 1 weist im wesentlichen ein ein Außen­gehäuse 3 bildendes Mundstück auf, in welchem in Strö­mungsrichtung zuerst ein an seinem Außenrand 4 gehal­tenes Vorsatzsieb 5, dahinter ein Strahlzerleger 6 und weitere, hier nicht dargestellte Einbauteile angeordnet sind.
Der Außenrand 4 des Vorsatzsiebes 5 ist in eine napfar­tige Aufnahme 15 des Strahlzerlegers 6 eingesetzt und wird von der Zuströmseite her durch einen Dichtungsring 7 abgedeckt.A jet regulator 1 shown in FIG. 1 can be screwed with its internal thread 2 onto the outlet end of a fitting, not shown here. The direction of flow is indicated by the arrow Pf 1. The jet regulator 1 essentially has a mouthpiece which forms an outer housing 3 and in which, in the direction of flow, an attachment screen 5 held at its outer edge 4 is arranged, followed by a jet separator 6 and further installation parts (not shown here).
The outer edge 4 of the front screen 5 is inserted into a cup-like receptacle 15 of the jet splitter 6 and is covered from the inflow side by a sealing ring 7.

Wie im Ausführungsbeispiel gemäß Fig. 1 und 2 erkennbar, ist das Vorsatzsieb 5 der Zuströmseite zugewandt konvex gewölbt ausgebildet. Erfindungsgemäß ist innerhalb des Außenrandes 4 als Zusatzhalterung 9 für die Siebfläche 8 ein zentral an der Wölbungsinnenseite angreifender Stützstift 10 vorgesehen.
Dieser Stützstift 10 ist in seiner Länge so bemessen, daß er sich an einem abströmseitig benachbarten Einbau­teil, insbesondere dem Strahlzerleger 6, abstützen kann. Durch diesen Stützstift 10 oder dgl. erhält man eine erhebliche Zusatzstabilisierung der Siebfläche 8, so daß diese ohne Nachteile auch vergleichsweise dünn aus­ gebildet sein kann. Der Stützstift 10 ist in seinem Querschnitt so bemessen, daß er im Vergleich zur gesam­ten Siebfläche 8 nur wenig Platz beansprucht, was unter anderem auch in Fig. 3 erkennbar ist. Durch den hier auf der anderen Seite angeordneten Stützstift 10 ver­ringert sich die Gesamtanzahl von Durchtrittsöffnungen 11 lediglich um zwei. Der Gesamtströmungsdurchtritt ist somit praktisch nicht beeinflußt.As can be seen in the exemplary embodiment according to FIGS. 1 and 2, the facing strainer 5 is convexly curved towards the inflow side. According to the invention, a support pin 10 acting centrally on the inside of the bulge is provided as an additional holder 9 for the screen surface 8 within the outer edge 4.
The length of this support pin 10 is such that it can be supported on an installation part adjacent to the outflow side, in particular the jet splitter 6. Through this support pin 10 or the like. A considerable additional stabilization of the screen surface 8 is obtained, so that it is comparatively thin without disadvantages can be formed. The cross section of the support pin 10 is such that it takes up little space in comparison to the entire screen surface 8, which can also be seen in FIG. 3, among other things. Due to the support pin 10 arranged here on the other side, the total number of passage openings 11 is reduced by only two. The total flow passage is practically not affected.

Im Ausführungsbeispiel besteht das Vorsatzsieb aus einem Kunststoffspritzteil, wobei der Stützstift 10 oder dgl. einstückig mit dem Vorsatzsieb 5 verbunden ist.
In einer abgewandelten Ausführungsform kann anstatt eines zylindrischen Stützstiftes aus Vollmaterial auch ein Röhrchen vorgesehen sein. Auch besteht die Möglich­keit, daß der Stützstift 10ʹ kreuzförmig aus sich kreuzen­den Stegen 14 besteht (Fig.4), wobei die Stege vorzugsweise so ange­ordnet sind, daß sie zwischen Durchtrittsöffnungs-­Reihen verlaufen. Solche Stege können sich dann auch über einen etwas größeren Bereich als der in den Figuren 1 und 2 erkennbare Stützstift 10 erstrecken, ohne daß dabei Durchtrittsöffnungen 11 verdeckt werden.
Auch eine konische oder anderweitig geformte Ausbildung eines Stützstiftes 10 ist denkbar, wobei die Formgebung unter anderem auch im Sinne einer Strömungsführung aus­gebildet sein kann. Gegebenenfalls können auch mehrere Stützstifte 10 oder dgl. über die Siebfläche 8 verteilt vorgesehen sein.In the exemplary embodiment, the front screen consists of a plastic injection-molded part, the support pin 10 or the like being integrally connected to the front screen 5.
In a modified embodiment, a tube can also be provided instead of a cylindrical support pin made of solid material. There is also the possibility that the support pin 10 'cross-shaped consists of intersecting webs 14 (Fig.4), the webs are preferably arranged so that they run between rows of openings. Such webs can then also extend over a somewhat larger area than the support pin 10 which can be seen in FIGS. 1 and 2, without covering through openings 11.
A conical or otherwise shaped design of a support pin 10 is also conceivable, the shape being able to be designed, among other things, in the sense of flow guidance. If necessary, a plurality of support pins 10 or the like can also be provided distributed over the screen surface 8.

Nach einer anderen Ausführungsform kann der Stützstift 10 oder dgl. auch mit einem in Strömungsrichtung hinter dem Vorsatzsieb 5 angeordneten Einbauteil, insbesondere dem dort befindlichen Strahlzerleger 6, verbunden bzw. auch als separates Teil mit diesem verbindbar sein. Das freien Ende dieses Stützstiftes weist dann entgegen der Strömungsrichtung und liegt innenseitig am Vorsatzsieb 5 an.According to another embodiment, the support pin 10 or the like can also be connected to an installation part arranged in the flow direction behind the front screen 5, in particular the jet splitter 6 located there, or can also be connected to it as a separate part. The The free end of this support pin then points against the direction of flow and lies on the inside of the front screen 5.

Insbesondere bei Anordnung eines zentralen Stützstiftes 10 kann zur zusätzlichen Stabilisierung der Siebfläche 8 diese in ihrer Materialdicke entsprechend der auf­tretenden Biegebelastung angepaßt bemessen sein, wobei insbesondere die Materialdicke vom Rand zur Mitte hin abnimmt.In particular when a central support pin 10 is arranged, for additional stabilization of the screen surface 8, its material thickness can be dimensioned in accordance with the bending load that occurs, the material thickness in particular decreasing from the edge towards the center.

Eine Ausführungsmöglichkeit der Erfindung besteht darin, daß der Stützstift 10 od. dgl. Zusatzhalterung 9 für das Vorsatzsieb 5 mit einem in Strömungsrichtung hinter dem Vorsatzsieb angeordneten Bauteil, z. B. dem Strahlregler 6, vorzugsweise einstückig verbunden ist. Einen solchen Stützstift kann man gut stabil mit einer breiten Basis ausführen. Eine besonders vorteilhafte Ausführung besteht andererseits darin, daß der Stützstift 10 od. dgl. Zu­satzhalterung 9 für das Vorsatzsieb 5 einstückig mit diesem Vorsatzsieb 5 verbunden ist. Dann bilden Vorsatz­sieb 5 und Stützstift 10 od. dgl. Zusatzhalterung 9 einen einzigen, gemeinsam herstell- und in den Strahlregler ein­baubaren Bestandteil. Bereits verwendete Ausbildungen des Strahlreglers 6 brauchen nicht verändert zu werden. Be­sonders vorteilhaft ist dabei sowohl für die Herstellung als auch für die Funktionsweise und die mögliche Detail­formgebung, wenn das Vorsatzsieb 5 nebst einstückig daran angebrachtem Stützstift 10 aus einem Kunststoffspritz­teil besteht. Ein solches Vorsatzsieb 5 aus Kunststoff kann z. B. gut im Querschnitt derart ausgebildet sein, daß es mit seiner Oberseite der Zuströmseite des Strahl­reglers konvex gewölbt zugewandt ist. Man erhält eine günstige Unterstützung, wenn dann der Stützstift 10 od. dgl. Zusatzhalterung 9 zentral an der Wölbungsinnenseite des Vorsatzsiebes 5 einstückig angebracht ist. Auch kann man bei einem derartigen, aus Kunststoff hergestellten Vorsatz­sieb 5 die Materialdicke der Siebfläche 8 vom Außenrand 4 zur Mitte hin abnehmend ausbilden, ohne daß fertigungs­technische Schwierigkeiten entstehen.An embodiment of the invention is that the support pin 10 or the like. Additional bracket 9 for the front screen 5 with a component arranged in the flow direction behind the front screen, z. B. the jet regulator 6, is preferably connected in one piece. Such a support pin can be carried out stably with a wide base. A particularly advantageous embodiment, on the other hand, is that the support pin 10 or the like. Additional holder 9 for the front screen 5 is integrally connected to this front screen 5. Then attachment screen 5 and support pin 10 or the like. Additional holder 9 form a single component that can be jointly manufactured and installed in the jet regulator. Designs of the jet regulator 6 that are already in use do not need to be changed. It is particularly advantageous both for the production and for the mode of operation and the possible shaping of details if the front screen 5, together with the support pin 10 attached to it in one piece, consists of a plastic injection-molded part. Such a screen 5 made of plastic can, for. B. be well designed in cross-section such that it faces convexly curved with its top of the inflow side of the jet regulator. A favorable support is obtained if the support pin 10 or the like. Additional holder 9 is located centrally on the inside of the bulge of the front screen 5 is attached in one piece. Also, with such a prefabricated sieve 5 made of plastic, the material thickness of the sieve surface 8 can decrease from the outer edge 4 to the center without producing technical difficulties.

Es hat sich als besonders vorteilhaft herausgestellt, wenn das freie Ende 12 des Stützstiftes 10 als Anspritzstelle für das aus Kunststoff bestehende, einstückig mit diesem Stützstift 10 verbundene Vorsatzsieb ausgebildet ist. In einem solchen Fall kann man gut das Vorsatzsieb 5 ein­stückig aus Kunststoff mit einem Verfahren herstellen, daß sich dadurch kennzeichnet, daß das Vorsatzsieb 5 vom freien Ende 12 seines zentralen Stützstiftes 10 od. dgl. zentraler Zusatzhalterung 9 her gespritzt wird. In Versuchen hat sich folgendes herausgestellt : Wenn die Anspritzstelle, in Fachkreisen auch "Anspritzppunkt" genannt, für das Vorsatzsieb 5 am freien Ende 12 des Stützstiftes 10 od. dgl. angeordnet ist, wird dadurch nicht nur das Spritzen selbst erleichtert, sondern auch eine gleichmäßige, symmetrische Werkstoffverteilung während des Spritzens und der Abkühlung des Spritzwerkstoffes begünstigt. Diese Herstellungsweise erhöht ihrerseits die Qualität, insbe­sondere die gleichmäßige Festigkeit des gesamten Vorsatz­siebes. Unter sonst gleichen Voraussetzungen, insbesondere bei gleichen Abmesungen und Werkstoffen,erhält man auf diese Weise praktisch ohne zusätzlichen Aufwand ein be­sonders stabiles Vorsatzsieb 5.It has turned out to be particularly advantageous if the free end 12 of the support pin 10 is designed as a gating point for the plastic screen that is integrally connected to this support pin 10. In such a case, the front screen 5 can be made in one piece from plastic using a method which is characterized in that the front screen 5 is injected from the free end 12 of its central support pin 10 or the like. Central additional holder 9. Experiments have shown the following: If the injection point, also called "injection point" in specialist circles, is arranged for the front screen 5 at the free end 12 of the support pin 10 or the like, not only is the spraying itself easier, but also a uniform one , symmetrical material distribution during spraying and cooling of the spray material favors. This method of production in turn increases the quality, in particular the uniform strength, of the entire screen. Under otherwise identical conditions, especially with the same dimensions and materials, a particularly stable attachment screen 5 is obtained in this way practically without additional effort.

Obgleich die vorbeschriebene und in der Zeichnung des Aus­führungsbeispieles dargestellte Ausführungsform besonders vorteilhaft ist, kann man bedarfsweise mehrere, vorzugs­weise über die Siebfläche 8 verteilt angeordnete Stütz­stifte 10 od. dgl. Zusatzhalterungen 9 vorsehen, so daß man mehrere Abstützbereiche für die Siebfläche 8 erhält.Although the embodiment described above and shown in the drawing of the exemplary embodiment is particularly advantageous, it is possible, if necessary, to provide a plurality of support pins 10 or the like, which are preferably distributed over the sieve surface 8, or the like. Additional brackets 9 so that a plurality of support regions for the sieve surface 8 are obtained.

In Fig. 1 ist der Stützstift 10 als im wesentlichen voll­zylindrisches Kunststoffteil dargestellt. Dies hat u. a. den Vorteil einer einfachen Herstellbarkeit der Spritzform. Man kann jedoch auch den Stützstift 10ʹ, wie in Fig. 4 in den Abmessungen etwas verzerrt dargestellt, kreuz­förmig ausbilden, so daß er sich aus sich kreuzenden Stegen 14 zusammensetzt, die z. B. derart auf die Durch­trittsöffnungen 11 der Siebfläche 8 abgestimmt sein können, daß bei vergleichsweise großer Biegesteifigkeit dieses kreuzförmigen Stützstiftes 10ʹ der Durchfluß durch die Siebfläche 8 möglichst wenig beindert ist.
In Fig. 2 erkennt man im linken Teil strichpunktiert an­gedeutet noch eine etwas abgewandelte Form eines Stütz­stiftes 10ʺ. Ein solcher Stützstift 10ʺ, dessen Querschnitt sich in Richtung seines freien Endes 12 verjüngt, ist einer­seits trömungstechnisch für das durchfließende Medium günstig, andererseits herstellungstechnisch, insbesondere beim Auswerfen eines Kunststoffteiles aus der Spritzform vorteilhaft.
Der Pfeil A in Fig. 2 zeigt die Blickrichtung für die Stirnansicht des im Querschnitt kreuzförmigen Stütz­stiftes 10 nach Fig.4. Auch ein solcher, von der runden Querschnittsform nach Fig. 1 abweichender Stützstift 10ʹ kann bezüglich seines Querschnittes in Richtung seines freien Endes 12 verjüngt ausgebildet sein.In Fig. 1, the support pin 10 is shown as a substantially fully cylindrical plastic part. This has the advantage, among other things, that the injection mold can be manufactured easily. However, one can also form the support pin 10ʹ, as shown in FIG. 4 somewhat distorted in the dimensions, in a cross shape, so that it is composed of intersecting webs 14, the z. B. can be matched to the passage openings 11 of the sieve surface 8 in such a way that the flow through the sieve surface 8 is prevented as little as possible with a comparatively great bending rigidity of this cross-shaped support pin 10ʹ.
In Fig. 2 can be seen in the left part indicated by dash-dotted lines a somewhat modified form of a support pin 10ʺ. Such a support pin 10ʺ, the cross section of which tapers in the direction of its free end 12, is, on the one hand, favorable in terms of fluid flow for the medium flowing through, and on the other hand is advantageous in terms of production, in particular when ejecting a plastic part from the injection mold.
The arrow A in FIG. 2 shows the direction of view for the front view of the cross-shaped support pin 10 according to FIG. 4. Such a support pin 10ʹ deviating from the round cross-sectional shape according to FIG. 1 can also be tapered with respect to its cross-section in the direction of its free end 12.

Aus Fig. 2 erkennt man noch, daß die Materialdicke d der Siebfläche 8 vom Außenrand 4 zur Mitte hin abnimmt. Dem­entsprechend ist die Materialdicke d in der Nähe des Außenrandes 4 etwas größer als die entsprechende Dicke d 1 in der Nähe des Stützstiftes 10. Außerdem erkennt man aus Fig. 1 und 2 gut, daß der Außenrand 4 einstückig mit der Siebfläche verbunden ist.From Fig. 2 it can still be seen that the material thickness d of the screen surface 8 decreases from the outer edge 4 towards the center. Accordingly, the material thickness d in the vicinity of the outer edge 4 is somewhat greater than the corresponding thickness d 1 in the vicinity of the support pin 10. In addition, it can be seen from FIGS. 1 and 2 that the outer edge 4 is integrally connected to the screen surface.

Alle in der Beschreibung ,den Ansprüchen und der Zeichnung dargestellten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.All the features shown in the description, the claims and the drawing can be essential to the invention both individually and in any combination with one another.

Claims (10)

1. Strahlregler (1) mit einem ein Außengehäuse (3) bilden­den Mundstück, in welchem in Strömungsrichtung zuerst ein an seinem Außenrand gehaltenes Vorsatzsieb (5) und dahinter weitere Einbauteile angeordnet sind, dadurch gekennzeichnet, daß das Vorsatzsieb (5) eine innerhalb seines Außenrandes (4) an seiner Siebfläche (8) angreifende Zusatzhalterung (9) aufweist.1. Jet regulator (1) with an outer housing (3) forming the mouthpiece, in which in the direction of flow first an attachment screen (5) held at its outer edge and behind it are further built-in parts, characterized in that the attachment screen (5) is located within its outer edge (4) on its screen surface (8) engaging additional bracket (9). 2. Strahlregler nach Anspruch 1, dadurch gekennzeichnet, daß die Zusatzhalterung (9) durch wenigstens einen, vorzugsweise zentral an der Siebfläche (8) angreifenden und gegebenenfalls mit dieser verbundenen Stützstift (10), Röhrchen od. dgl. gebildet ist, der sich an einem abströmungsseitig benachbarten Einbauteil abstützt oder mit diesem verbunden ist.2. Jet regulator according to claim 1, characterized in that the additional holder (9) by at least one, preferably centrally on the screen surface (8) engaging and optionally connected to this support pin (10), tube or the like supports an adjacent installation part on the outflow side or is connected to it. 3. Strahlregler nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß der Stützstift (10) od. dgl. einstückig mit dem Vorsatzsieb (5) verbunden ist und daß vorzugsweise das Vorsatzsieb (5) mit Stützstift (10) aus einem Kunst­stoffspritzteil besteht.3. Jet regulator according to claim 1 or 2, characterized in that the support pin (10) or the like. Is connected in one piece with the attachment screen (5) and that preferably the attachment screen (5) with support pin (10) consists of a plastic injection molded part. 4. Strählregler nach Anspruch 3, dadurch gekennzeichnet, daß das freie Ende (12) des Stützstiftes (10) als Anspritzstelle für das aus Kunststoff bestehende, einstückig mit dem Stützstift (10) verbundene Vor­satzsieb (5) ausgebildet ist.4. Current regulator according to claim 3, characterized in that the free end (12) of the support pin (10) is formed as a gating point for the plastic, one-piece with the support pin (10) connected to the attachment screen (5). 5. Strahlregler nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Vorsatzsieb (5) der Zuströmseite zugewandt konvex gewölbt ist und vorzugsweise an der Wölbungsinnenseite den Stützstift (10) od. dgl. Zusatzhalterung (9) aufweist.5. Jet regulator according to at least one of claims 1 to 4, characterized in that the facing sieve (5) facing the inflow side is convexly curved and preferably on the inside of the bulge the support pin (10) or the like. Additional bracket (9). 6. Strahlregler nach wenigstens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß mehrere, insbesondere über die Siebfläche (8) verteilt angeordnete Stütz­stifte (10) od. dgl. vorgesehen sind.6. Jet regulator according to at least one of claims 1 to 5, characterized in that a plurality of support pins (10) or the like, in particular distributed over the screen surface (8), are provided. 7. Strahlregler nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Stützstift (10ʹ) kreuzförmig aus sich kreuzenden Stegen (14) besteht.7. jet regulator according to at least one of claims 1 to 6, characterized in that the support pin (10ʹ) consists of cross-shaped from intersecting webs (14). 8. Strahlregler nach wenigstens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Materialdicke (d) der Siebfläche (8) von deren Außenrand (4) zu deren Mitte hin abnimmt und daß dieser Außenrand (4) vor­zugsweise axial gegenüber der Dicke (d) der Siebfläche (8) verbreitert sowie einstückig mit dieser verbunden ist.8. Jet regulator according to at least one of claims 1 to 7, characterized in that the material thickness (d) of the screen surface (8) decreases from its outer edge (4) to the center thereof and that this outer edge (4) is preferably axially opposite the thickness ( d) the screen surface (8) is widened and integrally connected to it. 9. Strahlregler nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet ,daß der Querschnitt des Stützstiftes (10ʺ) sich in Richtung seines freien Endes (12) verjüngt.9. Jet regulator according to at least one of claims 1 to 8, characterized in that the cross section of the support pin (10ʺ) tapers in the direction of its free end (12). 10. Verfahren zum Herstellen eines Strahlreglers (1) mit einem einstückigen Vorsatzsieb (5) aus Kunststoff, insbesondere nach wenigstens einem der Ansprüche 3 bis 9, dadurch gekennzeichnet, daß das Vorsatzsieb (5) vom freien Ende (12) seines zentralen Stützstiftes (10) od. dgl. her gespritzt wird.10. A method for producing a jet regulator (1) with a one-piece screen (5) made of plastic, in particular according to at least one of claims 3 to 9, characterized in that the screen (5) from the free end (12) of its central support pin (10 ) or the like. is sprayed here.
EP88102425A 1987-04-02 1988-02-19 Jet regulator with a strainer attachment, and method for manufacturing such a jet regulator Expired - Lifetime EP0284763B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102425T ATE65274T1 (en) 1987-04-02 1988-02-19 AERIAL REGULATOR WITH SCREEN ATTACHMENT AND METHOD OF MANUFACTURING SUCH AERIAL REGULATOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873711058 DE3711058A1 (en) 1987-04-02 1987-04-02 BEAM REGULATOR
DE3711058 1987-04-02

Publications (3)

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EP0284763A2 true EP0284763A2 (en) 1988-10-05
EP0284763A3 EP0284763A3 (en) 1988-12-21
EP0284763B1 EP0284763B1 (en) 1991-07-17

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EP88102425A Expired - Lifetime EP0284763B1 (en) 1987-04-02 1988-02-19 Jet regulator with a strainer attachment, and method for manufacturing such a jet regulator

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EP (1) EP0284763B1 (en)
AT (1) ATE65274T1 (en)
DE (2) DE3711058A1 (en)
ES (1) ES2023679B3 (en)

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US5070552A (en) * 1989-02-03 1991-12-10 Associated Mills, Inc. Personalized hand held shower head
EP0631020A1 (en) * 1993-05-20 1994-12-28 AMFAG S.r.l. Aerator for liquids
EP0646679A1 (en) * 1993-10-01 1995-04-05 DIETER WILDFANG GmbH Strainer for water taps
DE4333714A1 (en) * 1993-10-02 1995-04-06 Wildfang Dieter Gmbh Jet regulator for connection to sanitary fittings
DE4333549A1 (en) * 1993-10-01 1995-04-13 Wildfang Dieter Gmbh Filter screen for water-outflow fittings
GB2348382A (en) * 1999-03-27 2000-10-04 Purdie Elcock Limited Shower head rose

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DE4102116C2 (en) * 1991-01-25 1999-07-08 Wildfang Dieter Gmbh Aerator

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DE2012606A1 (en) * 1969-03-19 1970-09-24 A.H. Andersson & Co., Ab, Ljung (Schweden) Beading device, in particular for taps and the like
EP0216319A2 (en) * 1985-09-25 1987-04-01 Gottfried Dipl.-Ing. Ruhnke Aerator for the nozzle of a water tap

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5070552A (en) * 1989-02-03 1991-12-10 Associated Mills, Inc. Personalized hand held shower head
EP0631020A1 (en) * 1993-05-20 1994-12-28 AMFAG S.r.l. Aerator for liquids
US5467929A (en) * 1993-05-20 1995-11-21 Amfag S.R.L. Aerator for liquids
EP0646679A1 (en) * 1993-10-01 1995-04-05 DIETER WILDFANG GmbH Strainer for water taps
DE4333549A1 (en) * 1993-10-01 1995-04-13 Wildfang Dieter Gmbh Filter screen for water-outflow fittings
US5500115A (en) * 1993-10-01 1996-03-19 Dieter Wildfang Gmbh Filtering strainer
DE4333714A1 (en) * 1993-10-02 1995-04-06 Wildfang Dieter Gmbh Jet regulator for connection to sanitary fittings
DE4333714C2 (en) * 1993-10-02 1998-01-15 Wildfang Dieter Gmbh Jet regulator for connection to sanitary fittings
GB2348382A (en) * 1999-03-27 2000-10-04 Purdie Elcock Limited Shower head rose
US6241166B1 (en) 1999-03-27 2001-06-05 Purdie Elcock Limited Shower head rose
GB2348382B (en) * 1999-03-27 2002-11-20 Purdie Elcock Ltd Shower head rose

Also Published As

Publication number Publication date
EP0284763B1 (en) 1991-07-17
ES2023679B3 (en) 1992-02-01
ATE65274T1 (en) 1991-08-15
EP0284763A3 (en) 1988-12-21
DE3711058A1 (en) 1988-10-13
DE3863666D1 (en) 1991-08-22

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