EP2578319A1 - Sprinkler head - Google Patents

Sprinkler head Download PDF

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Publication number
EP2578319A1
EP2578319A1 EP12006844.0A EP12006844A EP2578319A1 EP 2578319 A1 EP2578319 A1 EP 2578319A1 EP 12006844 A EP12006844 A EP 12006844A EP 2578319 A1 EP2578319 A1 EP 2578319A1
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EP
European Patent Office
Prior art keywords
shower head
mixing chamber
water
section
nozzle channel
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Granted
Application number
EP12006844.0A
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German (de)
French (fr)
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EP2578319B1 (en
Inventor
Thomas Vorel
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Grohe AG
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Grohe AG
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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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/18—Roses; Shower heads

Definitions

  • the invention relates to a shower head for sanitary showers according to the preamble of patent claim 1.
  • shower heads of sanitary showers are suitable for dispensing different spray types.
  • aerated jets often referred to as champagne jars, are known in which air bubbles are added to the jet of water.
  • the in the CH 686 409 A5 disclosed hand shower has in the handle a water supply line with a nozzle forming flow restrictor, which opens like the existing air supply line in a widening injector, wherein subsequent to the injector a Druck inconvenience- and mixing space is arranged, which is directly limited by the jet former. Since the shower head is intended only to deliver a single spray and it is also a single-wall shower head, the construction in terms of height are no requirements to make.
  • the air intake device can be switched on and off as desired.
  • the flow cross-section for the liquid is expandable when switching off the air intake.
  • the ventilation device is provided in the handle of the hand shower, to which an extended mixing chamber connects.
  • a shower head for the production of ventilated jets which has a plurality of mixing chambers with funnel-shaped inlets and a central channel for the air intake.
  • the object of the invention is to improve a shower head with different jet types, which has an effective aerated jet at a reduced water flow rate.
  • a shower head for a sanitary shower with a shower head housing which comprises a jet former with a plurality of jet outlet openings for generating different jet types. Furthermore, at least one water guide is arranged in the shower head housing, passes through the water to the jet outlet openings or a certain number of jet outlet openings. For generating ventilated jets or for producing an air-water mixture, at least one ventilation device, which comprises an air inlet opening and an air channel, is provided in the shower head. Furthermore, the shower head has a mixing chamber, which is in fluid communication with the water guide and the ventilation device or the air duct.
  • At least one nozzle channel is provided for connecting the water guide and the mixing chamber.
  • the nozzle channel has a constant flow cross-section.
  • the outlet opening, whose shape corresponds to that of the flow cross-section, can be arranged before or within the mixing chamber.
  • the mixing chamber is designed in the form of a tube which has a larger or abruptly widened flow cross section in relation to the nozzle channel.
  • the mixing chamber is shaped so that it tapers in the flow direction of the water to its end.
  • the air intake principle of the shower head according to the invention works similar to a jet pump. This has two inputs and one output and consists in principle of two nested tubes.
  • a jet of water passes under the full line pressure from the nozzle channel into the mixing chamber, ie a pipe with a larger diameter.
  • the nozzle channel is referred to here as a driving nozzle and the mixing chamber as a catching nozzle.
  • the jet of water breaks and the friction and turbulence with the surrounding air cause mixing. In this process, kinetic energy is transferred from the water jet to the surrounding air, providing an effective delivery mechanism.
  • the suction power is directly proportional to the water flow.
  • the cross-sectional shape of the nozzle channel or the outlet opening of the nozzle channel have a significant effect on the degree of aeration of the effervescent jets.
  • the nozzle channel and / or the outlet opening of the nozzle channel have a polygonal, in particular a rectangular or square cross-section. Because of this cross-sectional formation better air intake through the water droplets is possible at the point of entry of the water into the mixing chamber, as the jet is better ruptured and breaks up into finer droplets.
  • the size ratios of nozzle channel and mixing chamber flow area also play a role for the promotion or for the intake of air and the degree of air-water mixing. It has been shown that a very good air mixing is given at a size ratio of the flow cross section of the nozzle channel to the smallest flow cross section of the mixing chamber of less than 1: 3, in particular 1: 3.7.
  • a diffuser is arranged after the mixing chamber. This connects to the narrowest point in the flow cross-section of the mixing chamber.
  • the diffuser By means of the diffuser, the flow of aerated water is slowed down and increases the fluid pressure.
  • the diffuser has a flow cross-section which widens continuously or discontinuously over its length.
  • the diffuser can in this case be mechanically connected to the mixing chamber or be provided as a component in one piece together with the mixing chamber.
  • a further embodiment of the invention provides that an annular chamber or water distribution chamber is arranged in front of the jet outlet openings of the shower head for distribution of the fluid mixture or water-air mixture.
  • the jet outlet openings, through which the water-air mixture is to be dispensed are arranged annularly around a center of the jet former.
  • a distribution chamber must be provided in the flow direction to the mixing chamber or the diffuser, which ensures the connection of the mixing chamber to all jet outlet openings.
  • a plurality of nozzle channels and mixing chambers are provided for the uniform supply of the annular chamber or water distribution chamber.
  • the desired flow rate of water-air mixture over a larger number of nozzle channels and mixing chambers is achievable, while increasing the flow cross-sections does not promise sufficient air-water mixture and concomitant water savings.
  • the nozzle channel as a single part or assembly that can be used sealed or screwed into the water supply. Since studies have also shown that the degree of ventilation is also dependent on the distance of the outlet opening of the nozzle channel and the smallest flow area of the mixing chamber, thus this distance can be varied and adjusted depending on the desired spray pattern and ventilation level.
  • Fig. 1 shows a section through a shower head 1 according to the invention.
  • the shower head 1 comprises a showerhead housing 2, in which on the underside a jet former 3 or a jet-forming unit is arranged, which or a plurality of jet outlet openings 31, 32, 33 has.
  • the jet outlet openings 31, 32, 33 have different shapes and / or sizes and are associated with different water guides 4 or inflow channels, which can be selectively controlled via an actuator 10.
  • different jet types such as individual jets, which are discharged through the water outlet openings 31, can be realized.
  • ventilated jets which are discharged through the water outlet openings 33 in the illustrated embodiment in the foreground.
  • a water guide 4 is arranged in the shower head 1, which is in communication with a mixing chamber 6.
  • the stands Mixing chamber 6 with an air duct 5 in connection, the air intake opening is arranged in the showerhead housing 2.
  • the mixing chamber 6 has an opening 62, the shape of which can be adapted to the respectively required geometry of the water guide 4 or the shower head housing 2.
  • the water for the aerated jets passes through a nozzle channel 7, in which the flow rate of the water is extremely increased due to the narrowed cross section, from the water guide 4 into the mixing chamber 6.
  • the enrichment of the water with air takes place according to the principle of action of a water jet pump.
  • the water serves as a driving medium, which flows at high speed from the outlet opening 71 of the nozzle channel 7 and the motive nozzle in the mixing chamber 6 - or also called catching nozzle - flows.
  • the water meets the air located here, which serves as a suction medium.
  • the velocity of the water-air mixture is increased up to the smallest flow cross-section 61 at the end of the mixing chamber 6 and then again reduced in a diffuser 8, the cross-section of which continuously widens in the flow direction of the fluid mixture.
  • the pressure energy of the water-air mixture is increased simultaneously.
  • the water-air mixture enters a water distribution chamber 9, which is in communication with the associated water outlet openings 33.
  • the water-air mixture can be optimally distributed over the entire desired Strahlpetner realization.
  • Fig. 2 shows the detail II with the mixing chamber 6, nozzle channel 7 and diffuser 8 in an enlarged view.
  • Mixing chamber 6 and diffuser 8 are made in one piece in the example shown.
  • the nozzle channel 7 is in turn made in one piece with the water guide 4.
  • the mixing chamber 6 and the associated opening 62 for the air intake are adapted to the geometric conditions.
  • the opening could also be provided as a radial opening in the mixing chamber wall.

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  • Nozzles (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

The head (1) has a housing (2), and a jet forming unit provided with a set of jet outlets (31-33). A water circuit (4) is arranged in the housing to reach water to the outlets. An aerator includes an air outlet and an air channel (5). A mixing chamber (6) is arranged in the housing and in fluid connection with the water circuit and the aerator or the air channel. A manifold is connected with the water circuit and the chamber. The chamber is in the form of a pipe that has a flow rate cross-section extended against the manifold. The chamber is tapered to an end in a flow direction of water.

Description

Die Erfindung betrifft einen Brausekopf für Sanitärbrausen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a shower head for sanitary showers according to the preamble of patent claim 1.

Viele Brauseköpfe von Sanitärbrausen sind dazu geeignet, unterschiedliche Strahlarten abzugeben. Neben Einzelstrahlen sind belüftete Strahlen, die häufig auch Champagnerstrahlen genannt werden, bekannt, bei denen dem Wasserstrahl Luftblasen beigefügt werden.Many shower heads of sanitary showers are suitable for dispensing different spray types. In addition to single jets, aerated jets, often referred to as champagne jars, are known in which air bubbles are added to the jet of water.

Zur Erzeugung der belüfteten Brausestrahlen sind unterschiedliche Ausführungsarten von Brauseköpfen bekannt. Die in der CH 686 409 A5 offenbarte Handbrause weist im Handgriff eine Wasserzuleitung mit einer einen Düsenstrahl bildenden Durchflussbegrenzerdüse auf, die wie die vorhandene Luftzufuhrleitung in einen sich erweiternden Injektorraum mündet, wobei im Anschluss an den Injektorraum ein Druckaufbau- und Vermischungsraum angeordnet ist, der unmittelbar durch den Strahlbildner begrenzt ist. Da der Brausekopf nur zur Abgabe einer einzigen Strahlart vorgesehen ist und es sich zudem um einen einschaligen Brausekopf handelt, sind an die Konstruktion hinsichtlich der Bauhöhe keine Anforderungen zu stellen.To produce the aerated spray jets different embodiments of shower heads are known. The in the CH 686 409 A5 disclosed hand shower has in the handle a water supply line with a nozzle forming flow restrictor, which opens like the existing air supply line in a widening injector, wherein subsequent to the injector a Druckaufbau- and mixing space is arranged, which is directly limited by the jet former. Since the shower head is intended only to deliver a single spray and it is also a single-wall shower head, the construction in terms of height are no requirements to make.

Aus der EP 1 020 571 A1 ist eine Handbrause mit einer nach Art einer Wasserstrahlpumpe arbeitenden Luftansaugeinrichtung bekannt. Die Luftansaugeinrichtung kann je nach Wunsch ein- und abgeschaltet werden. Zudem ist der Durchflussquerschnitt für die Flüssigkeit bei Abschaltung der Luftansaugeinrichtung erweiterbar. Die Belüftungseinrichtung ist im Handgriff der Handbrause vorgesehen, an den sich ein ausgedehnter Mischraum anschließt.From the EP 1 020 571 A1 is a hand shower with a working in the manner of a water jet pump air intake known. The air intake device can be switched on and off as desired. In addition, the flow cross-section for the liquid is expandable when switching off the air intake. The ventilation device is provided in the handle of the hand shower, to which an extended mixing chamber connects.

Zudem ist aus der DE 38 25 537 A1 ein Brausekopf zur Herstellung von belüfteten Strahlen bekannt, der mehrere Mischkammern mit trichterförmigen Einlässen und einem zentralen Kanal für die Luftansaugung aufweist. Durch die Querschnittsverringerung an den Einlässen und der erhöhten Geschwindigkeit des Wassers wird an der engsten Stelle ein Unterdruck erzeugt, so dass durch eine Öffnung an der engsten Stelle der Mischkammer nach dem Venturiprinzip ständig Luft angesaugt wird.Moreover, from the DE 38 25 537 A1 a shower head for the production of ventilated jets known which has a plurality of mixing chambers with funnel-shaped inlets and a central channel for the air intake. By reducing the cross-section at the inlets and the increased speed of the water, a negative pressure is generated at the narrowest point, so that air is constantly sucked through an opening at the narrowest point of the mixing chamber according to the venturi principle.

Vor diesem Hintergrund besteht die Aufgabe der Erfindung darin, einen Brausekopf mit unterschiedlichen Strahlarten, der einen wirksamen belüfteten Strahl bei verringerter Wasserdurchflussmenge aufweist, zu verbessern.Against this background, the object of the invention is to improve a shower head with different jet types, which has an effective aerated jet at a reduced water flow rate.

Diese Aufgabe wird durch einen erfindungsgemäßen Brausekopf mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a shower head according to the invention having the features of patent claim 1.

Mit der Erfindung wird ein Brausekopf für eine Sanitärbrause mit einem Brausekopfgehäuse, das einen Strahlbildner mit einer Vielzahl von Strahlaustrittsöffnungen zur Erzeugung unterschiedlicher Strahlarten umfasst, bereitgestellt. Weiterhin ist in dem Brausekopfgehäuse wenigstens eine Wasserführung angeordnet, über die Wasser zu den Strahlaustrittsöffnungen oder einer bestimmten Anzahl von Strahlaustrittsöffnungen gelangt. Zur Erzeugung von belüfteten Strahlen bzw. zur Erzeugung eines Luft-Wassergemischs ist in dem Brausekopf wenigstens eine Belüftungseinrichtung, die eine Lufteintrittsöffnung und einen Luftkanal umfasst, vorgesehen. Weiterhin weist der Brausekopf eine Mischkammer auf, die in Fluidverbindung mit der Wasserführung und der Belüftungseinrichtung bzw. dem Luftkanal steht.With the invention, a shower head for a sanitary shower with a shower head housing, which comprises a jet former with a plurality of jet outlet openings for generating different jet types, is provided. Furthermore, at least one water guide is arranged in the shower head housing, passes through the water to the jet outlet openings or a certain number of jet outlet openings. For generating ventilated jets or for producing an air-water mixture, at least one ventilation device, which comprises an air inlet opening and an air channel, is provided in the shower head. Furthermore, the shower head has a mixing chamber, which is in fluid communication with the water guide and the ventilation device or the air duct.

Erfindungsgemäß ist zur Verbindung von Wasserführung und Mischkammer wenigstens ein Düsenkanal vorgesehen. Der Düsenkanal weist einen konstanten Durchflussquerschnitt auf. Die Austrittsöffnung, deren Form der des Durchflussquerschnitts entspricht, kann vor oder innerhalb der Mischkammer angeordnet sein. Hierbei ist die Mischkammer in Form eines Rohres ausgebildet, das einen gegenüber dem Düssenkanal größeren oder sprunghaft erweiterten Durchflussquerschnitt aufweist. Weiterhin ist die Mischkammer derart geformt, dass sie sich in Fließrichtung des Wassers zu ihrem Ende hin verjüngt.According to the invention, at least one nozzle channel is provided for connecting the water guide and the mixing chamber. The nozzle channel has a constant flow cross-section. The outlet opening, whose shape corresponds to that of the flow cross-section, can be arranged before or within the mixing chamber. In this case, the mixing chamber is designed in the form of a tube which has a larger or abruptly widened flow cross section in relation to the nozzle channel. Furthermore, the mixing chamber is shaped so that it tapers in the flow direction of the water to its end.

Das Luftansaugprinzip des erfindungsgemäßen Brausekopfes funktioniert dabei ähnlich einer Strahlpumpe. Diese besitzt zwei Eingänge und einen Ausgang und besteht im Prinzip aus zwei ineinander gesteckten Rohren. Am Wassereingang tritt ein Wasserstrahl unter dem vollen Leitungsdruck aus dem Düsenkanal in die Mischkammer, also einem Rohr mit größerem Durchmesser. Der Düsenkanal wird hierbei auch als Treibdüse und die Mischkammer als Fangdüse bezeichnet. Der Wasserstrahl reißt auf und durch die Reibung und Verwirbelung mit der umgebenden Luft kommt es zur Vermischung. Bei diesem Vorgang wird kinetische Energie vom Wasserstrahl auf die umgebende Luft übertragen, womit ein effektiver Fördermechanismus zur Verfügung steht. Die Saugleistung ist direkt proportional zum Wasserdurchfluss.The air intake principle of the shower head according to the invention works similar to a jet pump. This has two inputs and one output and consists in principle of two nested tubes. At the water inlet, a jet of water passes under the full line pressure from the nozzle channel into the mixing chamber, ie a pipe with a larger diameter. The nozzle channel is referred to here as a driving nozzle and the mixing chamber as a catching nozzle. The jet of water breaks and the friction and turbulence with the surrounding air cause mixing. In this process, kinetic energy is transferred from the water jet to the surrounding air, providing an effective delivery mechanism. The suction power is directly proportional to the water flow.

Untersuchungen der Anmelderin haben gezeigt, dass die Querschnittsform des Düsenkanals oder der Austrittsöffnung des Düsenkanals eine wesentliche Auswirkung auf den Belüftungsgrad der Brausestrahlen haben. Gemäß einer Ausführungsform der Erfindung weisen daher der Düsenkanal und/oder die Austrittsöffnung des Düsenkanals einen polygonalen, insbesondere einen rechteckigen oder quadratischen Querschnitt auf. Aufgrund dieser Querschnittsausbildung ist an der Eintrittsstelle des Wassers in die Mischkammer eine bessere Luftaufnahme durch die Wassertropfen möglich, da der Strahl besser aufgerissen wird und in feinere Tröpfchen zerfällt.Investigations by the applicant have shown that the cross-sectional shape of the nozzle channel or the outlet opening of the nozzle channel have a significant effect on the degree of aeration of the effervescent jets. According to one embodiment of the invention, therefore, the nozzle channel and / or the outlet opening of the nozzle channel have a polygonal, in particular a rectangular or square cross-section. Because of this cross-sectional formation better air intake through the water droplets is possible at the point of entry of the water into the mixing chamber, as the jet is better ruptured and breaks up into finer droplets.

Allerdings ist es auch möglich, den Düsenkanal mit einem runden Querschnitt auszuführen.However, it is also possible to carry out the nozzle channel with a round cross section.

Weiterhin spielen für die Förderung bzw. für das Ansaugen der Luft und den Grad der Luft-Wasservermischung auch die Größenverhältnisse von Düsenkanal und Mischkammerdurchflussquerschnitt eine Rolle. Es hat sich gezeigt, dass eine sehr gute Luftdurchmischung bei einem Größenverhältnis des Durchflussquerschnitts des Düsenkanals zum kleinsten Durchflussquerschnitt der Mischkammer von kleiner als 1:3, insbesondere 1:3,7 gegeben ist.Furthermore, the size ratios of nozzle channel and mixing chamber flow area also play a role for the promotion or for the intake of air and the degree of air-water mixing. It has been shown that a very good air mixing is given at a size ratio of the flow cross section of the nozzle channel to the smallest flow cross section of the mixing chamber of less than 1: 3, in particular 1: 3.7.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist im Anschluss an die Mischkammer ein Diffusor angeordnet. Dieser schließt sich an die engste Stelle im Durchflussquerschnitt der Mischkammer an. Mittels des Diffusors wird die Strömung des belüfteten Wassers verlangsamt und der Flüssigkeitsdruck erhöht. Hierzu weist der Diffusor einen Strömungsquerschnitt auf, der sich stetig oder unstetig über dessen Länge erweitert. Der Diffusor kann hierbei mechanisch mit der Mischkammer verbunden werden oder als Bauteil einteilig zusammen mit der Mischkammer vorgesehen sein.According to an advantageous embodiment of the invention, a diffuser is arranged after the mixing chamber. This connects to the narrowest point in the flow cross-section of the mixing chamber. By means of the diffuser, the flow of aerated water is slowed down and increases the fluid pressure. For this purpose, the diffuser has a flow cross-section which widens continuously or discontinuously over its length. The diffuser can in this case be mechanically connected to the mixing chamber or be provided as a component in one piece together with the mixing chamber.

Eine weitere Ausgestaltung der Erfindung sieht vor, dass zur Verteilung des Fluidgemischs oder Wasser-Luftgemischs -in Fließrichtung gesehen- vor den Strahlaustrittsöffnungen des Brausekopfs eine Ringkammer oder Wasserverteilkammer angeordnet ist. Üblicherweise sind die Strahlaustrittsöffnungen, durch die das Wasser-Luftgemisch abgegeben werden soll, ringförmig um einen Mittelpunkt des Strahlbildners angeordnet. Um bei den gering vorgesehenen Bauhöhen des Brausekopfes alle Strahlaustrittsöffnungen mit dem Wasser-Luftgemisch versorgen zu können, muss in Fließrichtung nach der Mischkammer oder dem Diffusor eine Verteilkammer vorgesehen sein, die die Verbindung von der Mischkammer zu allen Strahlaustrittsöffnungen gewährleistet. Vorteilhafterweise sind zur gleichmäßigen Versorgung der Ringkammer oder Wasserverteilkammer mehrere Düsenkanäle und Mischkammern vorgesehen. Je nach Größe der Brause hat sich hierbei gezeigt, dass die gewünschte Durchflussmenge an Wasser-Luftgemisch über eine größere Anzahl der Düsenkanäle und Mischkammern erzielbar ist, während eine Vergrößerung der Durchflussquerschnitte keine ausreichende Luft-WasserVermischung und damit einhergehende Wasserersparnis verspricht.A further embodiment of the invention provides that an annular chamber or water distribution chamber is arranged in front of the jet outlet openings of the shower head for distribution of the fluid mixture or water-air mixture. Usually, the jet outlet openings, through which the water-air mixture is to be dispensed, are arranged annularly around a center of the jet former. In order to be able to supply all the jet outlet openings with the water-air mixture at the low intended heights of the shower head, a distribution chamber must be provided in the flow direction to the mixing chamber or the diffuser, which ensures the connection of the mixing chamber to all jet outlet openings. Advantageously, a plurality of nozzle channels and mixing chambers are provided for the uniform supply of the annular chamber or water distribution chamber. Depending on the size of the shower has shown here that the desired flow rate of water-air mixture over a larger number of nozzle channels and mixing chambers is achievable, while increasing the flow cross-sections does not promise sufficient air-water mixture and concomitant water savings.

Weiterhin ist es möglich, den Düsenkanal als Einzelteil oder Baueinheit vorzusehen, das gedichtet in die Wasserführung einsetzbar oder einschraubbar ist. Da Untersuchungen ebenfalls gezeigt haben, dass der Belüftungsgrad ebenfalls vom Abstand der Austrittsöffnung des Düsenkanals und dem kleinsten Durchflussquerschnitt der Mischkammer abhängig ist, kann somit dieser Abstand variiert und je nach gewünschtem Strahlbild und Belüftungsgrad eingestellt werden.Furthermore, it is possible to provide the nozzle channel as a single part or assembly that can be used sealed or screwed into the water supply. Since studies have also shown that the degree of ventilation is also dependent on the distance of the outlet opening of the nozzle channel and the smallest flow area of the mixing chamber, thus this distance can be varied and adjusted depending on the desired spray pattern and ventilation level.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und unter Bezugnahme auf die Zeichnung näher erläutert. Gleichwirkende Elemente sind dabei in den Figuren mit denselben Bezugszeichen gekennzeichnet. Im Einzelnen zeigen dabei:

  • Fig. 1 einen Schnitt durch einen erfindungsgemäßen Brausekopf
  • Fig. 2 das Detail II aus Fig. 1 in vergrößerter Darstellung
The invention will be explained in more detail using an exemplary embodiment and with reference to the drawing. Equivalent elements are identified in the figures with the same reference numerals. In detail, they show:
  • Fig. 1 a section through a shower head according to the invention
  • Fig. 2 the detail II off Fig. 1 in an enlarged view

Fig. 1 zeigt einen Schnitt durch einen erfindungsgemäßen Brausekopf 1. Der Brausekopf 1 umfasst ein Brausekopfgehäuse 2, in welchem an der Unterseite ein Strahlbildner 3 oder eine Strahlbildnereinheit angeordnet ist, der oder die eine Vielzahl von Strahlaustrittsöffnungen 31, 32, 33 aufweist. Die Strahlaustrittsöffnungen 31, 32, 33 haben unterschiedliche Formen und/oder Größen und sind unterschiedlichen Wasserführungen 4 oder Zuflusskanälen zugeordnet, die über eine Betätigungseinrichtung 10 wahlweise angesteuert werden können. Somit sind unterschiedliche Strahlarten wie z.B. Einzelstrahlen, die durch die Wasseraustrittsöffnungen 31 abgegeben werden, realisierbar. Bei der vorliegenden Erfindung stehen belüftete Strahlen, die bei dem dargestellten Ausführungsbeispiel durch die Wasseraustrittsöffnungen 33 abgegeben werden, im Vordergrund. Fig. 1 shows a section through a shower head 1 according to the invention. The shower head 1 comprises a showerhead housing 2, in which on the underside a jet former 3 or a jet-forming unit is arranged, which or a plurality of jet outlet openings 31, 32, 33 has. The jet outlet openings 31, 32, 33 have different shapes and / or sizes and are associated with different water guides 4 or inflow channels, which can be selectively controlled via an actuator 10. Thus, different jet types, such as individual jets, which are discharged through the water outlet openings 31, can be realized. In the present invention are ventilated jets, which are discharged through the water outlet openings 33 in the illustrated embodiment in the foreground.

Zur Erzeugung belüfteter Brausestrahlen ist in dem Brausekopf 1 eine Wasserführung 4 angeordnet, die mit einer Mischkammer 6 in Verbindung steht. Außerdem steht die Mischkammer 6 mit einem Luftkanal 5 in Verbindung, dessen Luftansaugöffnung im Brausekopfgehäuse 2 angeordnet ist. Hierzu weist die Mischkammer 6 eine Öffnung 62 auf, deren Form der jeweils notwenigen Geometrie der Wasserführung 4 oder des Brausekopfgehäuses 2 angepasst sein kann.To produce aerated spray jets, a water guide 4 is arranged in the shower head 1, which is in communication with a mixing chamber 6. In addition, the stands Mixing chamber 6 with an air duct 5 in connection, the air intake opening is arranged in the showerhead housing 2. For this purpose, the mixing chamber 6 has an opening 62, the shape of which can be adapted to the respectively required geometry of the water guide 4 or the shower head housing 2.

Das Wasser für die belüfteten Strahlen gelangt über einen Düsenkanal 7, in welchem die Durchflussgeschwindigkeit des Wassers aufgrund des verengten Querschnitts extrem erhöht wird, aus der Wasserführung 4 in die Mischkammer 6. Die Anreicherung des Wassers mit Luft erfolgt dabei nach dem Wirkprinzip einer Wasserstrahlpumpe. Das Wasser dient als Treibmedium, das mit hoher Geschwindigkeit aus der Austrittsöffnung 71 des Düsenkanals 7 bzw. der Treibdüse in die Mischkammer 6 - oder auch Fangdüse genannt - einströmt. Dort trifft das Wasser auf die sich hier befindliche Luft, die als Saugmedium dient. Durch innere Reibung und Turbulenzen entsteht eine Scherspannung in der Grenzschicht zwischen dem schnellen Wasser und dem wesentlich langsameren Saugmedium Luft, so dass das Saugmedium beschleunigt und mitgerissen wird. Da auch die Luft in der Mischkammer 6 beschleunigt wird, entsteht auch für das Saugmedium ein Druckabfall, so dass Luft aus dem Luftkanal 5 nachgefördert wird.The water for the aerated jets passes through a nozzle channel 7, in which the flow rate of the water is extremely increased due to the narrowed cross section, from the water guide 4 into the mixing chamber 6. The enrichment of the water with air takes place according to the principle of action of a water jet pump. The water serves as a driving medium, which flows at high speed from the outlet opening 71 of the nozzle channel 7 and the motive nozzle in the mixing chamber 6 - or also called catching nozzle - flows. There, the water meets the air located here, which serves as a suction medium. By internal friction and turbulence, a shear stress in the boundary layer between the fast water and the much slower suction medium air, so that the suction medium is accelerated and entrained. Since the air in the mixing chamber 6 is accelerated, a pressure drop also arises for the suction medium, so that air is conveyed from the air duct 5.

Innerhalb der sich verjüngenden Mischkammer 6 wird die Geschwindigkeit des Wasser-Luftgemischs bis zum kleinsten Durchflussquerschnitt 61 am Ende der Mischkammer 6 erhöht und anschließend in einem Diffusor 8, dessen Querschnitt sich in Fließrichtung des Fluidgemischs stetig erweitert, wieder reduziert. Hierbei wird die Druckenergie des Wasser-Luftgemischs gleichzeitig erhöht.Within the tapered mixing chamber 6, the velocity of the water-air mixture is increased up to the smallest flow cross-section 61 at the end of the mixing chamber 6 and then again reduced in a diffuser 8, the cross-section of which continuously widens in the flow direction of the fluid mixture. In this case, the pressure energy of the water-air mixture is increased simultaneously.

Im Anschluss an den Diffusor 8 tritt das Wasser-Luftgemisch in eine Wasserverteilkammer 9 ein, die in Verbindung mit den zugehörigen Wasseraustrittsöffnungen 33 steht. Hiermit kann das Wasser-Luftgemisch optimal über die ganze gewünschte Strahlbildnerfläche verteilt werden.Subsequent to the diffuser 8, the water-air mixture enters a water distribution chamber 9, which is in communication with the associated water outlet openings 33. Hereby, the water-air mixture can be optimally distributed over the entire desired Strahlbildnerfläche.

Aufgrund der Geometrie des Düsenkanals 7, der Austrittsöffnung 71, der Mischkammer 6 und des Luftkanals 5 ist über das zuvor beschriebene Prinzip trotz minimaler Bauhöhe des Brausenkopfs 1 eine effiziente Anreicherung des Wassers mit Luft möglich.Due to the geometry of the nozzle channel 7, the outlet opening 71, the mixing chamber 6 and the air channel 5, an efficient enrichment of the water with air is possible via the principle described above despite minimum height of the shower head 1.

Damit wird eine Steigerung des Volumenstroms trotz geringer Wassermenge ermöglicht. Durch den zugefügten Luftanteil im Wasser und der daraus resultierenden Steigerung der Strahlenergie sind gleiche Wurfweiten wie bei unbelüfteten Strahlen jedoch bei geringerer Wassermenge möglich. Dadurch wird eine Wassereinsparung und somit eine Energieeinsparung bei gleichem Duschkomfort möglich.This makes it possible to increase the volume flow despite the small amount of water. Due to the added amount of air in the water and the resulting increase in the beam energy, the same throwing distances as in the case of unaerated jets are possible, but with a smaller amount of water. This makes a water saving and thus an energy saving with the same showering comfort possible.

Fig. 2 zeigt das Detail II mit der Mischkammer 6, Düsenkanal 7 und Diffusor 8 in vergrößerter Darstellung. Mischkammer 6 und Diffusor 8 sind im dargestellten Beispiel einteilig ausgeführt. Der Düsenkanal 7 ist wiederum einteilig mit der Wasserführung 4 ausgeführt. Fig. 2 shows the detail II with the mixing chamber 6, nozzle channel 7 and diffuser 8 in an enlarged view. Mixing chamber 6 and diffuser 8 are made in one piece in the example shown. The nozzle channel 7 is in turn made in one piece with the water guide 4.

Die Mischkammer 6 und die zugehörige Öffnung 62 für die Luftansaugung sind dabei den geometrischen Gegebenheiten angepasst. Alternativ könnte die Öffnung auch als radiale Öffnung in der Mischkammerwand vorgesehen sein.The mixing chamber 6 and the associated opening 62 for the air intake are adapted to the geometric conditions. Alternatively, the opening could also be provided as a radial opening in the mixing chamber wall.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Brausekopfshower head
22
BrausekopfgehäuseShowerhead housing
33
Strahlbildnerbeamformer
3131
WasseraustrittsöffnungWater outlet
3232
WasseraustrittsöffnungWater outlet
3333
WasseraustrittsöffnungWater outlet
44
Wasserführungwater flow
55
Luftkanalair duct
66
Mischkammermixing chamber
6161
engster Durchflussquerschnitt der Mischkammernarrowest flow cross-section of the mixing chamber
6262
Lufteintrittsöffnung der MischkammerAir inlet opening of the mixing chamber
77
Düsenkanal für WasserNozzle channel for water
7171
Austrittsöffnung DüsenkanalOutlet nozzle channel
88th
Diffusordiffuser
99
WasserverteilkammerWater distribution chamber
1010
Betätigungseinrichtungactuator

Claims (11)

Brausekopf (1) für eine Sanitärbrause mit - einem Brausekopfgehäuse (2), - einem Strahlbildner mit einer Vielzahl von Strahlaustrittsöffnungen (31, 32, 33), - wenigstens einer in dem Brausekopfgehäuse (2) angeordneten Wasserführung (4), über die Wasser zu den Strahlaustrittsöffnungen (31, 32, 33) oder einer bestimmten Anzahl von Strahlaustrittsöffnungen (31, 32, 33) gelangt, - wenigstens einer Belüftungseinrichtung, die eine Lufteintrittsöffnung und einen Luftkanal (5) umfasst, - und wenigstens einer in dem Brausekopfgehäuse (2) angeordneten Mischkammer (6), die in Fluidverbindung mit der Wasserführung (4) und der Belüftungseinrichtung oder dem Luftkanal (5) steht
dadurch gekennzeichnet,
dass zur Verbindung von Wasserführung (4) und Mischkammer (6) wenigstens ein Düsenkanal (7) angeordnet ist, wobei die Mischkammer (6) in Form eines Rohres vorgesehen ist, das einen gegenüber dem Düssenkanal (7) größeren / sprunghaft erweiterten Durchflussquerschnitt aufweist, - und sich die Mischkammer (6) in Fließrichtung des Wassers zu ihrem Ende hin verjüngt. Shower head (1) for a sanitary shower with a shower head housing (2), a jet former having a multiplicity of jet outlet openings (31, 32, 33), - At least one in the shower head housing (2) arranged water guide (4) through which water to the jet outlet openings (31, 32, 33) or a certain number of jet outlet openings (31, 32, 33) passes, at least one ventilation device comprising an air inlet opening and an air channel (5), - And at least one in the showerhead housing (2) arranged mixing chamber (6) which is in fluid communication with the water guide (4) and the aeration device or the air duct (5)
characterized,
in that at least one nozzle channel (7) is arranged for the connection of the water guide (4) and mixing chamber (6), the mixing chamber (6) being provided in the form of a tube which has a larger / discontinuous flow cross section than the nozzle channel (7). - And the mixing chamber (6) tapers in the flow direction of the water to its end. Brausekopf (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Austrittsöffnung (71) des Düsenkanals (7) vor oder innerhalb der Mischkammer (6) angeordnet ist.Shower head (1) according to claim 1, characterized in that the outlet opening (71) of the nozzle channel (7) in front of or within the mixing chamber (6) is arranged. Brausekopf (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeder Durchflussquerschnitt der Mischkammer (6) gegenüber dem Durchflussquerschnitt des Düsenkanals sprunghaft erweitert ist.Shower head (1) according to claim 1 or 2, characterized in that each flow cross-section of the mixing chamber (6) is suddenly expanded with respect to the flow cross-section of the nozzle channel. Brausekopf (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Düsenkanal (7) und/oder die Austrittsöffnung (71) des Düsenkanals (7) einen polygonalen Querschnitt, insbesondere einen rechteckigen oder quadratischen Querschnitt, oder einen runden Querschnitt aufweisen.Shower head (1) according to one of the preceding claims, characterized in that the nozzle channel (7) and / or the outlet opening (71) of the nozzle channel (7) have a polygonal cross section, in particular a rectangular or square cross section, or a round cross section. Brausekopf (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass im Anschluss an die Mischkammer (6) oder im Anschluss an den kleinsten Durchflussquerschnitt (61) der Mischkammer (6) ein Diffusor (8) angeordnet ist, der sich in Fließrichtung des Wassers zu seinem Ende hin erweitert.Shower head (1) according to any one of the preceding claims, characterized in that following the mixing chamber (6) or following the smallest flow cross section (61) of the mixing chamber (6) a diffuser (8) is arranged, which in the flow direction of Water extended to its end. Brausekopf (1) nach Anspruch 5, dadurch gekennzeichnet, dass Mischkammer (6) und Diffusor (8) einteilig vorgesehen sind.Shower head (1) according to claim 5, characterized in that mixing chamber (6) and diffuser (8) are provided in one piece. Brausekopf (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Verhältnis des Durchflussquerschnitts des Düsenkanals (7) zum kleinstem Durchflussquerschnitt (61) der Mischkammer (6) kleiner als 1:3 vorgesehen ist.Shower head (1) according to one of the preceding claims, characterized in that the ratio of the flow cross-section of the nozzle channel (7) to the smallest flow cross-section (61) of the mixing chamber (6) is smaller than 1: 3 is provided. Brausekopf (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, das zur Verteilung des aus der Mischkammer (6) oder dem Diffusor (8) austretenden Fluidgemischs oder Wasser-Luftgemischs -in Fließrichtung gesehenvor den Strahlaustrittsöffnungen (33) des Brausekopfs (1) eine Ringkammer oder Wasserverteilkammer (9) vorgesehen ist.Shower head (1) according to one of the preceding claims, characterized in that for the distribution of the from the mixing chamber (6) or the diffuser (8) emerging fluid mixture or water-air mixture -in the flow direction before the jet outlet openings (33) of the shower head (1) a Ring chamber or water distribution chamber (9) is provided. Brausekopf (1) nach Anspruch 8, dadurch gekennzeichnet, das pro Ringkammer oder Wasserverteilkammer (9) mehrere Düsenkanäle (7) und Mischkammern (6) vorgesehen sind.Shower head (1) according to claim 8, characterized in that per annular chamber or water distribution chamber (9) a plurality of nozzle channels (7) and mixing chambers (6) are provided. Brausekopf (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Düsenkanal (7) als Einzelteil oder Baueinheit gedichtet in die Wasserführung (4) einsetzbar oder einschraubbar ist.Shower head (1) according to one of the preceding claims, characterized in that the nozzle channel (7) sealed as an individual part or assembly in the water guide (4) can be inserted or screwed. Brausekopf (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand zwischen der Austrittsöffnung (71) des Düsenkanals (7) und dem kleinsten Durchflussquerschnitt (61) der Mischkammer (6) variabel einstellbar ist.Shower head (1) according to one of the preceding claims, characterized in that the distance between the outlet opening (71) of the nozzle channel (7) and the smallest flow cross section (61) of the mixing chamber (6) is variably adjustable.
EP12006844.0A 2011-10-06 2012-10-02 Sprinkler head Active EP2578319B1 (en)

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DE102011114945A DE102011114945A1 (en) 2011-10-06 2011-10-06 shower head

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP3064278A1 (en) * 2015-03-06 2016-09-07 Grohe AG Sprinkler with nozzle for air admixture
WO2019076221A1 (en) * 2017-10-17 2019-04-25 北京沐羽科技有限公司 Hand washing apparatus using atomized water and atomized water production module
WO2021093239A1 (en) * 2019-11-12 2021-05-20 九牧厨卫股份有限公司 Water pressure-driven spray gun shower head

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Publication number Priority date Publication date Assignee Title
DE102020118091A1 (en) 2020-07-09 2022-01-13 Lixil Corporation Process for the additive manufacturing of a discontinued element

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CH686409A5 (en) 1992-12-11 1996-03-29 Jorg Mafli Shower head.
WO2000030759A1 (en) * 1998-11-19 2000-06-02 Masco Corporation Showerhead for delivering an aerated water stream by use of the venturi effect
EP1020571A2 (en) 1999-01-18 2000-07-19 Hansgrohe AG Sanitary article, in particular a shower head, with a switching device to influence a fluid flow

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WO2011039647A2 (en) * 2009-09-29 2011-04-07 Jmi Group Limited Shower head
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US4135670A (en) * 1976-01-10 1979-01-23 Tsd Kabushiki Kaisha Shower device
DE3825537A1 (en) 1987-07-30 1989-02-09 Pfister Price Inc Flow-intensifying means
CH686409A5 (en) 1992-12-11 1996-03-29 Jorg Mafli Shower head.
WO2000030759A1 (en) * 1998-11-19 2000-06-02 Masco Corporation Showerhead for delivering an aerated water stream by use of the venturi effect
EP1020571A2 (en) 1999-01-18 2000-07-19 Hansgrohe AG Sanitary article, in particular a shower head, with a switching device to influence a fluid flow

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3064278A1 (en) * 2015-03-06 2016-09-07 Grohe AG Sprinkler with nozzle for air admixture
WO2019076221A1 (en) * 2017-10-17 2019-04-25 北京沐羽科技有限公司 Hand washing apparatus using atomized water and atomized water production module
WO2021093239A1 (en) * 2019-11-12 2021-05-20 九牧厨卫股份有限公司 Water pressure-driven spray gun shower head

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EP2578319B1 (en) 2017-07-12

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