EP1738832B1 - Shower head - Google Patents

Shower head Download PDF

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Publication number
EP1738832B1
EP1738832B1 EP06004884A EP06004884A EP1738832B1 EP 1738832 B1 EP1738832 B1 EP 1738832B1 EP 06004884 A EP06004884 A EP 06004884A EP 06004884 A EP06004884 A EP 06004884A EP 1738832 B1 EP1738832 B1 EP 1738832B1
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EP
European Patent Office
Prior art keywords
shower head
flow
head according
water outlet
component
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EP06004884A
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German (de)
French (fr)
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EP1738832A1 (en
Inventor
Mile Ilisin
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—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
    • 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
    • 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
    • E03C1/084—Jet regulators with aerating means

Definitions

  • the invention relates to a shower head with the features specified in the preamble of claim 1.
  • shower heads In the sanitary area shower heads are used, which are known as jet showers. In these showers, the water is passed as a compact jet through the shower head to a water outlet to flow out there through one or more water outlet openings from the shower head.
  • shower heads of this type can be operated with a relatively low water flow. So showering is possible, for example, with a water flow rate of about 4 to 6 l / min.
  • it has been found to be a disadvantage of the jet showers that these showerheads tend to scale to a considerable extent, which can adversely affect the performance and worst case, the shower head destroyed.
  • the invention has for its object to provide a shower head, which reduces the above-mentioned disadvantages and which is inexpensive to manufacture.
  • a shower head is to be created, which has a low water flow at low water pressure, but constant spray pattern with reduced hot water storage, aerosolmindernd, the jet circuit is closed, the air turbulence is minimized and has a low tendency to calcification, thus almost wear and tear is no maintenance due to lack of dripping ,
  • the shower head according to the invention has an inlet-side water inlet and a water outlet connected via a flow channel, wherein a nozzle-like cross-sectional taper in the flow channel is provided between the water inlet and the water outlet, followed by an extended channel section of constant cross-section in the flow direction, which is connected with at least one closed Cavity is conductively connected, and subsequently adjoins a preferably in the direction of the water outlet conically expanding channel section and the output side it is provided a cross-sectional widening to the water outlet, and the output side of an extended channel section of constant cross-section is provided.
  • the shower head will be characterized in that the water outlet is formed by a plurality of outlet openings.
  • the line connection is connected to the water outlet via a flow channel, wherein the invention under a flow channel means a line connection, which may be at least partially formed by a plurality of parallel channels.
  • the provided between the line connection and the water outlet cross-sectional taper is nozzle-like, d. h., That the cross-section of the flow channel in the flow direction decreases continuously to a minimum value.
  • the region of the flow channel before the cross-sectional taper is conical, but the flow channel can taper here in any other rotational paraboloidal shape.
  • the cross-section of the flow channel widens again, so that the flow channel at the water outlet has a cross-section, which in a preferred embodiment is greater than the cross-section of the flow channel at the line connection.
  • the geometry of the flow channel causes a water flow coming from the line connection to be appreciably accelerated as it flows through the cross-sectional taper and leaves the shower head at the water outlet at a comparatively high speed.
  • the water outlet is formed by a plurality of outlet openings. With this arrangement, it has proven to be advantageous that a uniform throughput of water over all outlet openings is achieved. It has also been found to be advantageous that the water in this arrangement is atomized to aerosols only to a very small extent on the output side of the water outlet. The aerosol formation is comparable to that of jet showers and normal wash taps.
  • the invention combines the above-mentioned advantages with the fact that in the shower head due to the high flow rate with a relatively low water consumption only small or no Limescale deposits that could affect the functionality of the shower head.
  • the nozzle-like cross-sectional taper of the flow channel in the flow direction is followed by an extended channel section of constant cross-section and subsequently a channel section which preferably widens conically in the direction of the water outlet.
  • a region of the flow channel is formed as a hollow cylinder, wherein the cross section of this section has a larger cross section than the narrowest cross section of the nozzle-like cross-sectional taper.
  • this extended channel section of constant cross-section there is a first acceleration of the water flow emerging from the nozzle-like cross-sectional taper. This water flow is then accelerated once again when it reaches the flared channel section to the water outlet.
  • the flow channel may also have a different outer contour, but it should extend to the water outlet preferably continuously.
  • the shower head furthermore has a closed cavity, which is line-connected to the flow channel on the output side of the cross-sectional taper, preferably in the widened channel section of constant cross-section.
  • the cavity includes an air volume prior to actuation of the shower head.
  • a particularly advantageous embodiment of the invention provides that the flow channel is formed on the input side of the nozzle-like cross-sectional taper of a plurality of individual channels. These are directed obliquely to the longitudinal axis of the adjoining flow channel, wherein the longitudinal axes of the individual channels do not intersect the longitudinal axis of the adjoining flow channel.
  • the individual channels preferably have a significantly smaller diameter than the portion of the flow channel arranged in front of it in the flow direction. The same applies to the downstream in the flow direction behind the individual channels flow channel, which has a much larger diameter than the individual channels.
  • the individual channels with respect to the preceding flow channel form a cross-sectional constriction, which leads to an acceleration of the water flows entering from the individual channels in the adjoining flow channel.
  • the water flow in the nozzle-like cross-sectional constriction additionally becomes a swirl about the main flow direction or the axis of the shower head offset, whereby the flow behavior of the water flow is further improved when flowing through the cross-sectional taper.
  • the shower head expediently has a flow rate limiter. This is preferably arranged in the region between the line connection and the nozzle-like cross-sectional taper.
  • the flow restrictor may be a commercially available flow restrictor, as commonly used in sanitary fittings.
  • a screen is arranged on the input side of the flow restrictor. This sieve can remove impurities in the water, e.g. fibrous substances, which may result from the sealing of a line connection of the water pipe by hemp, catch, so that the performance of the shower head is not affected thereby.
  • the disc with the obliquely oriented therein individual channels, the flow rate limiter and the sieve are advantageously combined to form a unit, which is one-piece manageable.
  • the assembly of the individual components is considerably simplified.
  • the arrangement of these three components in a unit that the disc, the flow rate limiter and the screen can be summarized in a simple manner at a fixed predetermined distance from each other in the unit.
  • the nozzle-like cross-sectional displacement of the flow channel is preferably formed by a rotationally symmetrical component.
  • this component is preferably designed as a rotating part, but can also be prepared by other methods, such as casting.
  • the flow channel between the cross-sectional taper and the water outlet is, preferably also formed by a rotationally symmetrical component, wherein on the outside of the component a recess is provided, which preferably extends annularly around its circumference.
  • a recess is provided on the outside of this component, which preferably extends annularly around its circumference.
  • the aforementioned closed cavity can be formed, which can be conductively connected to the flow channel in the region of this component.
  • a pipe is guided through the component, which opens both in the channel forming the central opening of this component and at the recess on the outside thereof.
  • the outlet openings of the shower head are advantageously formed by a perforated disc. This is arranged at the downstream end of the shower head.
  • the shower head preferably has a tubular and stepped housing.
  • the channel-forming components are optionally set apart from each other or sandwiched.
  • the unit with the sieve, the flow rate limiter and the disc with the obliquely oriented channels in the housing in the flow direction starting from the line connection, the unit with the sieve, the flow rate limiter and the disc with the obliquely oriented channels, the component forming the nozzle-like cross-sectional taper, the component which the flow channel between the cross-sectional taper and forms the water outlet and the perforated disc arranged with the outlet openings in the flow direction one behind the other.
  • these components are preferably fixed in the housing between an abutment shoulder projecting in the direction of the housing interior, which is arranged near the line connection, and a fastening ring which can be screwed on the outflow-side end of the housing.
  • Fig.1 shows the individual components of a shower head in an exploded view.
  • the shower head has a housing 2, the housing 2 is of tubular design and has on the input side a water inlet 3. It is rotationally symmetrical to the central axis A and has a first pipe section 4 and a second pipe section 6.
  • the pipe section 4 forms the water inlet 3 at its upper end in the drawing, while the pipe section 6 at the lower end of the housing 2 comprises the outlet.
  • a step is created inside the housing 2, which forms a ring shoulder 8 aligned transversely to the central axis A of the housing 2 in the housing.
  • the outer contour of the housing 2 in the region of the pipe section 4 has a smaller outer diameter than in the region of the pipe section 6 on the upper end side of the housing 2, the housing forms an inwardly directed circumferential annular shoulder 20.
  • an external thread 11 is provided on the outside of the housing, via which the shower head can be screwed to a shower head connection, not shown.
  • a screen 12 In the housing 2, a screen 12, a flow rate limiter 14, a disc 18, a nozzle 20 and a component 22 and a perforated disc 24 are provided. All the above components have a circular outer correction.
  • a holder 16 serves to receive the screen 12, the flow rate limiter 14 and the discs 18 and forms together with these components a structural unit, which can be handled in one piece.
  • the holder 16 is formed as a tubular sleeve and also receives a disc 26.
  • the disc 26 is formed as a perforated disc, wherein 8 holes 28 are each arranged at a uniform distance from the central axis of the discs 26 at a uniform angular pitch spaced apart on a pitch circle.
  • the disc 26 divides the holder 16 in a first portion 30 of the holder 16 is incorporated into the inner wall a shoulder 34. This shoulder 34 corresponds to a shoulder 36 provided on the flow rate limiter 14.
  • the flow restrictor 14 is inserted into the portion 30 of the holder 16, wherein the shoulder 36 of the flow restrictor 14 comes to rest on the shoulder 34 of the holder 16.
  • the flow rate limiter 14 is set with distance to the disc 26 in the holder 16.
  • the shoulder 24 on the inner wall of the holder 16 is arranged so that the flow rate limiter 14 can not rest directly on the disc 26 and in the holder 16 between the flow rate limiter 14 and the disc 26 remains a free space.
  • the sieve 12 is placed, which is to protect the flow rate limiter 14 from clogging. If both the flow rate limiter 14 and the screen 12 are in the section 30 of the holder 16, the screen 12 is flush with the end edge of the holder 16.
  • the portion 32 of the holder 16 is provided for receiving the write 18.
  • an annular shoulder in the outer contour of this disc 18 is provided on an end face of the disc 18.
  • the disc 18 thus has a region with a diameter which ensures that this region of the disc 18 can be inserted accurately into the region 32 of the holder 16. Due to the annular shoulder on the disc 18, this is set at a distance from the disc 26 of the holder 16, so that within the portion 32 between the disc 26 and the disc 18 remains a free space.
  • the disc 18 has five through channels, with a channel 38 centrally guided in the direction of the central axis through the disc 18, the four remaining channels 40 are arranged at equal intervals around the channel 38, wherein the orientation of the channels 40 obliquely to the orientation of Arranged on the central axis A channel 38 and the central axes of the individual channels 38 and 40 do not intersect. Thus, none of the longitudinal axes of the channels 38 and 40 intersect the longitudinal axes of the nozzle 20.
  • the exposed peripheral surface of the disc 18 is flush with the peripheral surface of the holder 16 from.
  • the holder 16 and the disc 18 are dimensioned so that the holder 16 and the disc 18 can be inserted with little play in the pipe section 4 of the housing 2.
  • the nozzle 20 is also provided for arrangement in the pipe section 4 of the housing 2 and adjoins in the installed state in the flow direction directly to the disk 18 at.
  • the nozzle 20 has a passage 42.
  • This passage is conical.
  • the passageway 42 tapers from this opening so far that only a very small opening is formed on the other end face of the nozzle 20.
  • the outer contour of the nozzle 20 corresponds to the inner contour of the pipe section 4 of the housing 2, so that the nozzle 20 can be inserted with little play in the pipe section 4.
  • a groove is incorporated over the entire circumference, which serves to receive a sealing ring.
  • the nozzle 20 is followed by the component 22, whose through-passage 44 is essentially divided into two, with a cylindrical portion 46, to which a conical portion 48 adjoins.
  • the diameter of the passageway 44 in the cylindrical portion 46 is greater than the narrowest cross section of the passageway 42.
  • the diameter of the passageway 44 increases from the diameter in the region 46 until it has its largest diameter at the end face remote from the region 46 of the component 22.
  • the component 22 has a substantially conical outer contour, wherein it continuously tapers from its lower end in the drawing in the direction of its upper, the nozzle 20 end facing and merges rounded at the upper end in a flange-like extension.
  • the outer contour of the component 22 forms an annular space 50 extending around the entire circumference.
  • a bore which connects the annular space 50 to the passage 44 in the portion 46 transversely to the central axis of the component 22.
  • a pipe 51 is guided, which terminates flush on the outside of the component 22 and protrudes within the component 22 in the portion 46 of the through-channel 44 and ends there near the central axis of the through-channel 44.
  • a circular groove 66 is provided, which serves to receive a sealing ring, with which the component 22 relative to the housing 2 can be sealed to the annular shoulder 8.
  • an inner shoulder 52 is provided on the end face of the component 22, which serves for accurately fitting receiving the circular perforated disc 24.
  • the inner set 52 receives the perforated disc 24 so that the perforated disc 24 terminates flush with the end face of the component 22.
  • the inner shoulder 52 has a groove 68. Via a sealing ring arranged in the groove 68, the contact area between the inner shoulder 52 of the component 22 and the perforated disc 24 is sealed.
  • the through holes 54 disposed on the inner and outer circles have the same angular orientation and are arranged in pairs on common radii of the perforated disc 24, while the holes 54 disposed on the intervening circle are spaced apart from those on the inner and outer circles by 45 ° ° are arranged staggered.
  • a fastening ring 56 is provided for fixing the channel-forming components in the housing 2.
  • the fastening ring 56 has an external thread 58 with which it is screwed into an internal thread 60 on the housing 2.
  • the inner diameter of the fastening ring 56 is designed smaller than the outer diameter of the perforated disc 24.
  • Fig. 2 shows the shower head after the assembly of all channel-forming components in the housing 2.
  • the holder 16 with the therein set flow rate limiter 14, the screen 12 and the disc 18 fits snugly against the annular shoulder 10. Both the holder 16 and the protruding portion of the write 18 close fit with the wall of the pipe section 4.
  • the nozzle 20 which is supported in the direction of the central axis A on the disc 18.
  • a sealing ring 62 is disposed between the wall of the pipe section 4 and the outer wall of the nozzle 20.
  • the nozzle 20 ends flush with the pipe section 4 at its transition into the pipe section 6.
  • the component 22 is supported both on the annular shoulder 8 of the housing 2 and on the end face of the nozzle 20 from.
  • the annular space 50 of the component 22 forms a chamber 64 which extends around the entire component 22.
  • the chamber 64 is conductively connected via the pipe 51 to the passage 44 in the section 46.
  • the perforated disc 24 is inserted. This is followed by the screwed fastening ring 56, which presses against the perforated disc 24 and the component 22 and thus defines all channel-forming components against the annular shoulder 10.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Nozzles (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

The shower head has an inlet side pipe connection (11) to which is connected a water outlet via a flow passage. A nozzle-like cross sectional convergence (20) is provided in the flow passage between the pipe connection and water outlet, and on the outlet side of the convergence a cross sectional divergence (22) is provided in the direction of the water outlet. The water outlet is formed by a number of outlet orifices (54) which are located on several circles concentric to the center axis of the water outlet and preferably in a plane at right angles to the direction of flow.

Description

Die Erfindung betrifft einen Duschkopf mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a shower head with the features specified in the preamble of claim 1.

Im Sanitärbereich werden Duschköpfe eingesetzt, welche als Strahlbrausen bekannt sind. Bei diesen Brausen wird das Wasser als ein kompakter Strahl durch den Duschkopf zu einem Wasserauslass geleitet, um dort durch eine oder mehrere Wasseraustrittsöffnungen aus dem Duschkopf auszuströmen. Duschköpfe dieser Art können mit einem verhältnismäßig geringen Wasserdurchsatz betrieben werden. So ist das Duschen beispielsweise mit einem Wasserdurchsatz von etwa 4 bis 6 l/min möglich. Es hat sich allerdings als Nachteil der Strahlbrausen herausgestellt, dass diese Brausen in erheblichem Maße zur Verkalkung tendieren, was die Funktionseigenschaft negativ beeinflussen kann und schlimmsten Falls den Duschkopf zerstört.In the sanitary area shower heads are used, which are known as jet showers. In these showers, the water is passed as a compact jet through the shower head to a water outlet to flow out there through one or more water outlet openings from the shower head. Shower heads of this type can be operated with a relatively low water flow. So showering is possible, for example, with a water flow rate of about 4 to 6 l / min. However, it has been found to be a disadvantage of the jet showers that these showerheads tend to scale to a considerable extent, which can adversely affect the performance and worst case, the shower head destroyed.

Eine wesentlich geringere Verkalkungsneigung weisen die ebenfalls bekannten Düsenbrausen auf. Bei diesen Brausen wird der Wasserstrahl von dem Wasserauslass durch eine Düse geleitet und auf diese Weise so weit beschleunigt, dass der Wasserstrom innerhalb des Duschkopfes einerseits nur eine geringe Kalkablagerung zulässt und andererseits eventuell vorhandene Kalkablagerungen mitreißt. Nachteilig an den Düsenbrausen ist es, dass diese Brausen einen deutlich größeren Wasserdurchsatz als Strahlbrausen aufweisen. So wird davon ausgegangen, dass zum Duschen mit Düsenbrausen ein Wasserdurchlass von etwa 9 l/min erforderlich ist. Des Weiteren tritt das Wasser bei Düsenbrausen im Allgemeinen sehr ungleichmäßig verteilt aus dem Wasserauslass aus. Ein besonders schwerwiegender Nachteil der Düsenbrausen ist es aber, dass diese Brausen beim Wasseraustritt aus dem Duschkopf zu einer starken Aerosolbildung führen. Diese Aerosolen können die an jedem Duschkopf vorhandenen Legionellen aufnehmen. Das Einatmen lungengängiger Aerosole gilt als Hauptinfektionsweg für durch Legionellen übertragene Krankheiten die im Falle einer Legionellen-Pneumonie oftmals lebensbedrohlich verlaufen.A much lower calcification tendency, the well-known nozzle showers. In these showers, the water jet is directed from the water outlet through a nozzle and accelerated in this way so far that the water flow within the shower head on the one hand only allows a slight limescale and on the other hand entrains possibly existing calcium deposits. A disadvantage of the jet showers is that these showers have a significantly greater throughput of water than jet showers. So it is assumed that for showering with jet showers, a water passage of about 9 l / min is required. Furthermore, the water in jet showers is generally very unevenly distributed from the water outlet. A particularly serious disadvantage of jet showers, however, is that these showers lead to a strong formation of aerosol when the water exits the shower head. These aerosols can absorb the legionella present on each showerhead. Inhalation of respirable aerosols is the main route of infection for Legionella transmitted diseases that are often life-threatening in the case of Legionella pneumonia.

Ebenfalls ist aus dem bisherigen Stand der Technik EP 1 273 724 eine Armatur bekannt, die durch die direkte Beimischung von Raumluft während des Wasserflusses innerhalb der Armatur einen Schaumstrahl herstellt. Dieses kann jedoch ebenso nicht die oben genannten Nachteile vermeiden.Also, from the prior art EP 1 273 724 a fitting known that produces a foam jet by the direct admixture of room air during the flow of water within the fitting. However, this also can not avoid the above-mentioned disadvantages.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, einen Duschkopf zu schaffen, welcher die oben genannten Nachteile vermindert und welcher kostengünstig herzustellen ist.
Dabei soll ein Duschkopf geschaffen werden, der einen geringen Wasserdurchlauf bei niedrigem Wasserdruck, jedoch konstantem Strahlbild mit reduzierter Warmwasserbevorratung aufweist, aerosolmindernd ist, das Strahlkreis geschlossen, die Luftverwirbelung minimiert wird und einer geringe Verkalkungsneigung hat, dadurch nahezu durch fehlendes Nachtropfen verschleiß- und wartungsfrei ist.Against this background, the invention has for its object to provide a shower head, which reduces the above-mentioned disadvantages and which is inexpensive to manufacture.
In this case, a shower head is to be created, which has a low water flow at low water pressure, but constant spray pattern with reduced hot water storage, aerosolmindernd, the jet circuit is closed, the air turbulence is minimized and has a low tendency to calcification, thus almost wear and tear is no maintenance due to lack of dripping ,

Diese Aufgabe wird durch einen Duschkopf mit den in Anspruch 1 angegebenen Merkmalen gelöst. Bevorzugte Ausführungsformen sind in den Unteransprüchen, der nachfolgenden Beschreibung sowie der Zeichnung angegeben.This object is achieved by a shower head having the features specified in claim 1. Preferred embodiments are given in the subclaims, the following description and the drawing.

Der erfindungsgemäße Duschkopf weist einen eingangsseitigen Wassereinlass und einem damit über einen Strömungskanal leitungsverbundenen Wasserauslass auf, wobei zwischen dem Wassereinlass, und dem Wasserauslass eine düsenartige Querschnittsverjüngung im Strömungskanal vorgesehen ist, an die sich in Strömungsrichtung ein erweiterter Kanalabschnitt konstanten Querschnitts anschließt, welcher mit mindestens einem abgeschlossenem Hohlraum leitungsverbunden ist, sowie nachfolgend ein sich in Richtung des Wasserauslasses vorzugsweise konisch erweiternder Kanalabschnitt anschließt sowie ausgangsseitig daran eine Querschnittserweiterung zum Wasserauslass vorgesehen ist, sowie ausgangsseitig daran ein erweiterter Kanalabschnitt konstanten Querschnitts vorgesehen ist.The shower head according to the invention has an inlet-side water inlet and a water outlet connected via a flow channel, wherein a nozzle-like cross-sectional taper in the flow channel is provided between the water inlet and the water outlet, followed by an extended channel section of constant cross-section in the flow direction, which is connected with at least one closed Cavity is conductively connected, and subsequently adjoins a preferably in the direction of the water outlet conically expanding channel section and the output side it is provided a cross-sectional widening to the water outlet, and the output side of an extended channel section of constant cross-section is provided.

In Üblicherweise wird der Duschkopf dadurch gekennzeichnet sein, dass der Wasserauslass durch eine Vielzahl von Austrittsöffnungen gebildet ist.Usually, the shower head will be characterized in that the water outlet is formed by a plurality of outlet openings.

Dabei wird bei dem erfindungsgemäßen Duschkopf der Leitungsanschluss mit dem Wasserauslass über einen Strömungskanal verbunden, wobei die Erfindung unter einem Strömungskanal eine Leitungsverbindung versteht, weiche zumindest teilweise auch von mehreren parallel geführten Kanälen gebildet sein kann. Die zwischen dem Leitungsanschluss und dem Wasserauslass vorgesehene Querschnittsverjüngung ist düsenartig ausgebildet, d. h., dass sich der Querschnitt des Strömungskanals in Strömungsrichtung kontinuierlich bis zu einem kleinsten Wert verringert. Vorzugsweise ist der Bereich des Strömungskanals vor der Querschnittverjüngung konisch ausgebildet, der Strömungskanal kann sich hier aber in jeder anderen rotationsparaboloiden Form verjüngen.In this case, in the shower head according to the invention the line connection is connected to the water outlet via a flow channel, wherein the invention under a flow channel means a line connection, which may be at least partially formed by a plurality of parallel channels. The provided between the line connection and the water outlet cross-sectional taper is nozzle-like, d. h., That the cross-section of the flow channel in the flow direction decreases continuously to a minimum value. Preferably, the region of the flow channel before the cross-sectional taper is conical, but the flow channel can taper here in any other rotational paraboloidal shape.

In Strömungsrichtung hinter der Querschnittverjüngung weitet sich der Querschnitt des Strömungskanals wieder auf, so dass der Strömungskanal am Wasserauslass einen Querschnitt aufweist, welcher in bevorzugter Ausgestaltung größer als der Querschnitt des Strömungskanals am Leitungsanschluss ist. Die Geometrie des Strömungskanals bewirkt, dass ein von dem Leitungsanschluss kommender Wasserstrom beim Durchströmen der Querschnittsverjüngung merklich beschleunigt wird und den Duschkopf am Wasserauslass mit einer vergleichsweise großen Geschwindigkeit verlässt.In the flow direction behind the cross-sectional taper, the cross-section of the flow channel widens again, so that the flow channel at the water outlet has a cross-section, which in a preferred embodiment is greater than the cross-section of the flow channel at the line connection. The geometry of the flow channel causes a water flow coming from the line connection to be appreciably accelerated as it flows through the cross-sectional taper and leaves the shower head at the water outlet at a comparatively high speed.

Der Wasserauslass wird von einer Vielzahl von Austrittsöffnungen gebildet. Bei dieser Anordnung hat sich als vorteilhaft herausgestellt, dass ein über alle Austrittsöffnungen gleichmäßiger Wasserdurchsatz erzielt wird. Weiter vorteilhaft hat sich gezeigt, dass das Wasser bei dieser Anordnung ausgangsseitig des Wasserauslasses nur in sehr geringem Ausmaß zu Aerosolen zerstäubt wird. Die Aerosolbildung ist derjenigen bei Strahlbrausen und normalen Wascharmaturen vergleichbar. Dabei verbindet die Erfindung die oben genannten Vorteile mit der Tatsache, dass in dem Duschkopf aufgrund der hohen Strömungsgeschwindigkeit bei einem verhältnismäßig geringen Wasserbrauch nur geringfügige bzw. gar keine Kalkablagerungen entstehen die die Funktionalität des Duschkopfes beeinträchtigen könnten.The water outlet is formed by a plurality of outlet openings. With this arrangement, it has proven to be advantageous that a uniform throughput of water over all outlet openings is achieved. It has also been found to be advantageous that the water in this arrangement is atomized to aerosols only to a very small extent on the output side of the water outlet. The aerosol formation is comparable to that of jet showers and normal wash taps. The invention combines the above-mentioned advantages with the fact that in the shower head due to the high flow rate with a relatively low water consumption only small or no Limescale deposits that could affect the functionality of the shower head.

In einer weiteren vorteilhaften Ausführungsform der Erfindung schließt sich an die düsenartige Querschnittsverjüngung des Strömungskanals in Strömungsrichtung ein erweiterter Kanalabschnitt konstanten Querschnitts sowie nachfolgend ein sich in Richtung des Wasserauslasses vorzugsweise konisch erweiternder Kanalsabschnitt an. So ist hinter der Querschnittsverjüngung ein Bereich des Strömungskanals hohlzylindrisch ausgebildet, wobei der Querschnitt dieses Abschnittes einen größeren Querschnitt als der engste Querschnitt der düsenartigen Querschnittverjüngung aufweist. In diesem erweiterten Kanalabschnitt konstanten Querschnitts findet eine erste Beschleunigung des aus der düsenartigen Querschnittsverjüngung austretenden Wasserstromes statt. Dieser Wasserstrom wird anschließend noch einmal beschleunigt, wenn er den sich konisch erweiternden Kanalabschnitt bis zum Wasserauslass erreicht. Statt einer kegelförmigen Ausbildung dieses Abschnitts des Strömungskanals kann der Strömungskanal auch eine andere Außenkontur aufweisen, wobei er sich allerdings zu dem Wasserauslass vorzugsweise kontinuierlich erweitern sollte.In a further advantageous embodiment of the invention, the nozzle-like cross-sectional taper of the flow channel in the flow direction is followed by an extended channel section of constant cross-section and subsequently a channel section which preferably widens conically in the direction of the water outlet. Thus, behind the cross-sectional taper, a region of the flow channel is formed as a hollow cylinder, wherein the cross section of this section has a larger cross section than the narrowest cross section of the nozzle-like cross-sectional taper. In this extended channel section of constant cross-section, there is a first acceleration of the water flow emerging from the nozzle-like cross-sectional taper. This water flow is then accelerated once again when it reaches the flared channel section to the water outlet. Instead of a conical design of this portion of the flow channel, the flow channel may also have a different outer contour, but it should extend to the water outlet preferably continuously.

Der Duschkopf weist des Weiteren einen abgeschlossenen Hohlraum auf, welcher mit dem Strömungskanal ausgangsseitig der Querschnittsverjüngung, vorzugsweise in dem erweiterten Kanalabschnitt konstanten Querschnitts leitungsverbunden ist. Der Hohlraum beinhaltet vor der Betätigung des Duschkopfes ein Luftvolumen.The shower head furthermore has a closed cavity, which is line-connected to the flow channel on the output side of the cross-sectional taper, preferably in the widened channel section of constant cross-section. The cavity includes an air volume prior to actuation of the shower head.

Strömt Wasser ausgangsseitig der Querschnittsverjüngung mit hoher Geschwindigkeit in Richtung des Wasserauslasses, erzeugt der Wasserstrom vor der Mündung der Leitungsverbindung zu dem Hohlraum einen Unterdruck, wodurch die in dem Hohlraum befindliche Luft aus diesem abgesaugt wird. Dies wiederum bewirkt einen Unterdruck in dem Hohlraum, wodurch in umgekehrter Richtung von dem Strömungskanal Luft und/oder Wasser angesaugt wird. Anschließend wird der Inhalt des Hohlraumes wieder durch den Sog des Wasserstroms in dem Strömungskanal abgesaugt. Dieser sich schnell und periodisch wiederholende Vorgang führt dazu, dass an den Austrittsöffnungen des Wasserauslasses keine durchgehend fadenförmige Wasserstrahlen austreten und die Wasserstrahlen in periodischen Abständen gebrochen werden, so dass sie zu große länglichen Tropfen zerteilt werden. Es hat sich gezeigt, dass hierdurch die Aerosolbildung weiter verringert wird.If water flows on the output side of the cross-sectional constriction at high speed in the direction of the water outlet, the water flow generates a negative pressure before the mouth of the line connection to the cavity, whereby the air in the cavity is sucked out of this. This in turn causes a negative pressure in the cavity, which in the reverse direction of the flow channel air and / or water is sucked. Subsequently, the content of the cavity is again sucked by the suction of the water flow in the flow channel. This process, which repeats quickly and periodically, prevents the discharge of the water outlet from causing continuous filamentary jets of water and breaking the water jets at periodic intervals, causing them to break up into large elongated drops. It has been shown that this aerosol formation is further reduced.

Eine besonders vorteilhafte Weiterbildung der Erfindung sieht vor, dass der Strömungskanal eingangsseitig der düsenartigen Querschnittsverjüngung von mehreren Einzelkanälen gebildet wird. Diese sind schräg zur Längsachse des sich daran anschließenden Strömungskanals gerichtet, wobei die Längsachsen der Einzelkanäle nicht die Längsachse des sich daran anschließenden Strömungskanals schneiden. Die Einzelkanäle weisen vorzugsweise einen deutlich geringeren Durchmesser als der in der Strömungsrichtung davor angeordneten Abschnitt des Strömungskanals auf. Gleiches gilt für den sich in Strömungsrichtung hinter den Einzelkanälen anschließenden Strömungskanal, welcher einen deutlich größeren Durchmesser als die Einzelkanäle aufweist. So bilden die Einzelkanäle bezüglich des vorausgehenden Strömungskanals eine Querschnittsverengung, welche zu einer Beschleunigung der aus den Einzelkanälen in den sich daran anschließenden Strömungskanals eintretenden Wasserströme führt. Durch die geometrische Anordnung der Einzelkanäle wird der Wasserstrom in der düsenartigen Querschnittsverengung zusätzlich in einen Drall um die Hauptströmungsrichtung bzw. die Achse des Duschkopfes versetzt, wodurch das Strömungsverhalten des Wasserstroms beim Durchströmen der Querschnittsverjüngung zusätzlich verbessert wird.A particularly advantageous embodiment of the invention provides that the flow channel is formed on the input side of the nozzle-like cross-sectional taper of a plurality of individual channels. These are directed obliquely to the longitudinal axis of the adjoining flow channel, wherein the longitudinal axes of the individual channels do not intersect the longitudinal axis of the adjoining flow channel. The individual channels preferably have a significantly smaller diameter than the portion of the flow channel arranged in front of it in the flow direction. The same applies to the downstream in the flow direction behind the individual channels flow channel, which has a much larger diameter than the individual channels. Thus, the individual channels with respect to the preceding flow channel form a cross-sectional constriction, which leads to an acceleration of the water flows entering from the individual channels in the adjoining flow channel. Due to the geometric arrangement of the individual channels, the water flow in the nozzle-like cross-sectional constriction additionally becomes a swirl about the main flow direction or the axis of the shower head offset, whereby the flow behavior of the water flow is further improved when flowing through the cross-sectional taper.

Zweckmäßigerweise weist der Duschkopf einen Durchflussmengenbegrenzer auf. Dieser ist bevorzugt im Bereich zwischen dem Leitungsanschluss und der düsenartigen Querschnittsverjüngung angeordnet. Bei dem Durchflussmengenbegrenzer kann es sich um einen handelsüblichen Durchflusmengenbegrenzer handeln, wie er üblicherweise in sanitären Armaturen eingesetzt ist. Bei dem erfinderischen Duschkopf ist es möglich, Durchflussmengenbegrenzer zu verwenden, die den Wasserdurchsatz auf einen Volumenstrom von 5,5 bis 6,5 l/min. begrenzen, wobei mit dem erfindungsgemäßen Duschkopf schon bei einem Wasserdurchsatz von 4l/min geduscht werden kann.The shower head expediently has a flow rate limiter. This is preferably arranged in the region between the line connection and the nozzle-like cross-sectional taper. The flow restrictor may be a commercially available flow restrictor, as commonly used in sanitary fittings. In the inventive shower head, it is possible to use flow restrictors limiting the water flow to a flow rate of 5.5 to 6.5 l / min. limit, which can be showered with the shower head according to the invention already at a water flow of 4l / min.

Um den Durchflussmengenbegrenzer vor einer Verstopfung zu schützen, ist eingangsseitig des Durchflussmengenbegrenzers ein Sieb angeordnet. Dieses Sieb kann Verunreinigungen im Wasser, z.B. faserartigen Stoffe, die von dem Abdichten einer Leitungsverbindung der Wasserleitung mittels Hanf herrühren können, auffangen, so dass das Betriebsverhalten des Duschkopfes dadurch nicht beeinträchtigt wird.In order to protect the flow restrictor from clogging, a screen is arranged on the input side of the flow restrictor. This sieve can remove impurities in the water, e.g. fibrous substances, which may result from the sealing of a line connection of the water pipe by hemp, catch, so that the performance of the shower head is not affected thereby.

Die Scheibe mit den schräg darin ausgerichteten Einzelkanälen, der Durchflussmengenbegrenzer und das Sieb sind vorteilhaft zu einer Baueinheit zusammengefasst, weiche einteilig handhabbar ist. Hierdurch wird die Montage der Einzelbauteile erheblich vereinfacht. Daneben ermöglicht die Anordnung dieser drei Bauteile in einer Baueinheit, dass die Scheibe, der Durchflussmengenbegrenzer und das Sieb in einfacher Weise in einem fest vorgegebenen Abstand zueinander in der Baueinheit zusammengefasst werden können.The disc with the obliquely oriented therein individual channels, the flow rate limiter and the sieve are advantageously combined to form a unit, which is one-piece manageable. As a result, the assembly of the individual components is considerably simplified. In addition, the arrangement of these three components in a unit that the disc, the flow rate limiter and the screen can be summarized in a simple manner at a fixed predetermined distance from each other in the unit.

Die düsenartige Querschnittsverschiebung des Strömungskanals wird bevorzugt durch ein rotationssymmetrisches Bauteil gebildet. Dabei ist dieses Bauteil vorzugsweise als Drehteil ausgebildet, kann aber auch mittels anderer Verfahren, beispielsweise Gießen hergestellt werden.The nozzle-like cross-sectional displacement of the flow channel is preferably formed by a rotationally symmetrical component. In this case, this component is preferably designed as a rotating part, but can also be prepared by other methods, such as casting.

Der Strömungskanal zwischen der Querschnittverjüngung und dem Wasserauslass ist, vorzugsweise auch durch ein rotationssymmetrisches Bauteil gebildet, wobei an der Außenseite des Bauteils eine Aussparung vorgesehen ist, welche sich vorzugsweise ringförmig um dessen Umfang erstreckt. Durch Abdeckung der an der Außenseite dieses Bauteils angeordneten Aussparung, kann der vorerwähnte abgeschlossene Hohlraum gebildet werden, der mit dem Strömungskanal im Bereich dieses Bauteils leitungsverbunden werden kann. Hierzu ist durch das Bauteil ein Rohr geführt, welches sowohl in der den Kanal bildenden zentralen Durchbrechung dieses Bauteils als auch an der Aussparung an dessen Außenseite mündet.The flow channel between the cross-sectional taper and the water outlet is, preferably also formed by a rotationally symmetrical component, wherein on the outside of the component a recess is provided, which preferably extends annularly around its circumference. By covering the recess arranged on the outside of this component, the aforementioned closed cavity can be formed, which can be conductively connected to the flow channel in the region of this component. For this purpose, a pipe is guided through the component, which opens both in the channel forming the central opening of this component and at the recess on the outside thereof.

Die Austrittsöffnungen des Duschkopfes sind vorteilhaft von einer Lochscheibe gebildet. Diese ist am abströmseitigen Ende des Duschkopfs angeordnet.The outlet openings of the shower head are advantageously formed by a perforated disc. This is arranged at the downstream end of the shower head.

Bevorzugt weit der Duschkopf ein rohrförmiges und abgestuftes Gehäuse auf. In diesem sind die kanalbildenden Bauteile wahlweise voneinander beabstandet oder sandwichartig angeordnet festgelegt.The shower head preferably has a tubular and stepped housing. In this, the channel-forming components are optionally set apart from each other or sandwiched.

In einer bevorzugten Ausführung sind in dem Gehäuse in Strömungsrichtung ausgehend von dem Leitungsanschluss die Baueinheit mit dem Sieb, dem Durchflussmengenbegrenzer und der Scheibe mit den schräg ausgerichteten Kanälen, das Bauteil, welches die düsenartige Querschnittsverjüngung bildet, das Bauteil, welches den Strömungskanal zwischen der Querschnittsverjüngung und dem Wasserauslass bildet sowie die Lochscheibe mit den Austrittsöffnungen in Durchströmungsrichtung hintereinander angeordnet. Dabei sind diese Bauteile in dem Gehäuse vorzugsweise zwischen einer in Richtung des Gehäuseinneren ragenden Anlageschulter, welche nahe dem Leitungsanschluss angeordnet ist, und einem am abströmseitigen Ende des Gehäuses aufschraubbaren Befestigungsring festgelegt. So sind die in dem Gehäuse angeordneten Bauteile nicht einzeln in dem Gehäuse befestigt und es ist nur ein Befestigungsring erforderlich, um alle Bauteile in dem Gehäuse festzulegen. Hierdurch wird die Montage und Demontage des Duschkopfes erheblich vereinfacht.In a preferred embodiment, in the housing in the flow direction starting from the line connection, the unit with the sieve, the flow rate limiter and the disc with the obliquely oriented channels, the component forming the nozzle-like cross-sectional taper, the component which the flow channel between the cross-sectional taper and forms the water outlet and the perforated disc arranged with the outlet openings in the flow direction one behind the other. In this case, these components are preferably fixed in the housing between an abutment shoulder projecting in the direction of the housing interior, which is arranged near the line connection, and a fastening ring which can be screwed on the outflow-side end of the housing. Thus, the components disposed within the housing are not individually secured within the housing and only one mounting ring is required to secure all of the components in the housing. As a result, the assembly and disassembly of the shower head is considerably simplified.

Nachfolgend ist die Erfindung anhand eine in den Zeichnungen dargestellten Ausführungsbeispiels erläutert. Es zeigen:

Fig. 1
einen erfindungsgemäßen Duschkopf im Längsschnitt und Explosionsdarstellung mit den kanalbildenden Bauteilen jeweils daneben in einer Draufsicht und
Fig.2
einen Längsschnitt des Duschkopfes nach Fig. 1 im zusammengebauten Zustand.
The invention will be explained with reference to an embodiment shown in the drawings. Show it:
Fig. 1
a shower head according to the invention in longitudinal section and exploded view with the channel-forming components next to each other in a plan view and
Fig.2
a longitudinal section of the shower head after Fig. 1 in the assembled state.

Fig.1 zeigt die einzelnen Bauteile eines Duschkopfes in einer explosionsartigen Darstellung. Der Duschkopf weist ein r Gehäuse 2 auf, das Gehäuse 2 ist rohrförmig abgestuft ausgebildet und weist eingangsseitig einen Wassereinlass 3 auf. Es ist rotationssymmetrisch zur Mittelachse A ausgebildet und weist einen ersten Rohrabschnitt 4 sowie einen zweiten Rohrabschnitt 6 auf. Dabei ist der Rohrdurchmesser des Rohrabschnitts 6 deutlich größer als der Rohrdurchmesser des Rohrabschnitts 4. Der Rohrabschnitt 4 bildet an seinem in der Zeichnung oberen Ende den Wassereinlass 3, während der Rohrabschnitt 6 an dem unteren Ende des Gehäuses 2 den Auslass umfasst. Beim Aufeinandertreffen der Rohrabschnitte 4 und 6 entsteht innerhalb des Gehäuses 2 eine Stufe, weiche eine quer zur Mittelachse A des Gehäuses 2 ausgerichtete Ringschulter 8 in dem Gehäuse bildet. Die Außenkontur des Gehäuses 2 im Bereicht der Rohrabschnitts 4 einen kleineren Außendurchmesser auf, als in dem Bereich des Rohrabschnitts 6. an der oberen Stirnseite des Gehäuses 2 bildet das Gehäuse eine nach innen gerichtete umlaufende Ringschulter 20 aus. In diesem Bereich des Gehäuses 2 ist an der Außenseite des Gehäuses eine Außengewinde 11 vorgesehen, über welches der Duschkopf an einem nicht dargestellten Duschkopfanschluss angeschraubt werden kann. Fig.1 shows the individual components of a shower head in an exploded view. The shower head has a housing 2, the housing 2 is of tubular design and has on the input side a water inlet 3. It is rotationally symmetrical to the central axis A and has a first pipe section 4 and a second pipe section 6. The pipe section 4 forms the water inlet 3 at its upper end in the drawing, while the pipe section 6 at the lower end of the housing 2 comprises the outlet. When the pipe sections 4 and 6 meet, a step is created inside the housing 2, which forms a ring shoulder 8 aligned transversely to the central axis A of the housing 2 in the housing. The outer contour of the housing 2 in the region of the pipe section 4 has a smaller outer diameter than in the region of the pipe section 6 on the upper end side of the housing 2, the housing forms an inwardly directed circumferential annular shoulder 20. In this region of the housing 2, an external thread 11 is provided on the outside of the housing, via which the shower head can be screwed to a shower head connection, not shown.

In dem Gehäuse 2 sind ein Sieb 12, ein Durchflussmengenbegrenzer 14, eine Scheibe 18, eine Düse 20 und ein Bauteil 22 sowie eine Lochscheibe 24 vorgesehen. Alle vorgenannten Bauteile weisen eine kreisrunde Außenkorrektur auf.In the housing 2, a screen 12, a flow rate limiter 14, a disc 18, a nozzle 20 and a component 22 and a perforated disc 24 are provided. All the above components have a circular outer correction.

Eine Halterung 16 dient zur Aufnahme des Siebes 12, des Durchflussmengenbegrenzers 14 sowie der Scheiben 18 und bildet zusammen mit diesen Bauteilen eine Baueinheit, welche einteilig gehandhabt werden kann. Die Halterung 16 ist als eine rohrförmige Hülse ausgebildet und nimmt auch eine Scheibe 26 auf. Die Scheibe 26 ist als Lochscheibe ausgebildet, wobei 8 Löcher 28 jeweils im gleichen Abstand von der Mittelachse der Scheiben 26 in gleichmäßiger Winkelteilung voneinander beabstandet auf einem Teilkreis angeordnet sind. Die Scheibe 26 teilt die Halterung 16 in einem ersten Abschnitt 30 der Halterung 16 ist in die Innenwandung ein Absatz 34 eingearbeitet. Dieser Absatz 34 korrespondiert mit einem Absatz 36, der an dem Durchflussmengenbegrenzer 14 vorgesehen ist. Auf den Durchflussmengenbegrenzer 14 sowie das Sieb 12 wird an dieser Stelle nicht weiter eingegangen, da es sich um handelsübliche Bauteile handelt, wie sie in der Sanitärtechnik üblicherweise in Armaturen eingesetzt werden. Der Durchflussmengenbegrenzer 14 wird in den Abschnitt 30 der Halterung 16 eingesetzt, wobei der Absatz 36 des Durchflussmengenbegrenzers 14 auf dem Absatz 34 der Halterung 16 zur Anlage kommt. Hierdurch wird der Durchflussmengenbegrenzer 14 mit abstand zu der Scheibe 26 in der Halterung 16 festgelegt. Der Absatz 24 an der Innenwandung der Halterung 16 ist dabei so angeordnet, dass der Durchflussmengenbegrenzer 14 nicht direkt auf der Scheibe 26 aufliegen kann und in der Halterung 16 zwischen dem Durchflussmengenbegrenzer 14 und der Scheibe 26 ein Freuraum verbleibt. Auf den Durchflussmengenbegrenzer 14 wird das Sieb 12 aufgelegt, welches den Durchflussmengenbegrenzer 14 vor Verstopfungen schützen soll. Liegen sowohl der Durchflussmengenbegrenzer 14 als auch das Sieb 12 in dem Abschnitt 30 der Halterung 16, schließt das Sieb 12 bündig mit der Stirnkante der Halterung 16 ab.A holder 16 serves to receive the screen 12, the flow rate limiter 14 and the discs 18 and forms together with these components a structural unit, which can be handled in one piece. The holder 16 is formed as a tubular sleeve and also receives a disc 26. The disc 26 is formed as a perforated disc, wherein 8 holes 28 are each arranged at a uniform distance from the central axis of the discs 26 at a uniform angular pitch spaced apart on a pitch circle. The disc 26 divides the holder 16 in a first portion 30 of the holder 16 is incorporated into the inner wall a shoulder 34. This shoulder 34 corresponds to a shoulder 36 provided on the flow rate limiter 14. On the flow rate limiter 14 and the screen 12 will not be discussed further at this point, since it is commercially available components, as they are commonly used in plumbing in fittings. The flow restrictor 14 is inserted into the portion 30 of the holder 16, wherein the shoulder 36 of the flow restrictor 14 comes to rest on the shoulder 34 of the holder 16. As a result, the flow rate limiter 14 is set with distance to the disc 26 in the holder 16. The shoulder 24 on the inner wall of the holder 16 is arranged so that the flow rate limiter 14 can not rest directly on the disc 26 and in the holder 16 between the flow rate limiter 14 and the disc 26 remains a free space. On the flow rate limiter 14, the sieve 12 is placed, which is to protect the flow rate limiter 14 from clogging. If both the flow rate limiter 14 and the screen 12 are in the section 30 of the holder 16, the screen 12 is flush with the end edge of the holder 16.

Der Abschnitt 32 der Halterung 16 ist zur Aufnahme der Schreibe 18 vorgesehen. Hierzu ist an einer Stirnfläche der Scheibe 18 ein ringförmiger Absatz in der Außenkontur dieser Scheibe 18 vorgesehen. Die Scheibe 18 weist so einen Bereich mit einem Durchmesser auf, der gewährleistet, das dieser Bereich der Scheibe 18 passgenau in den Bereich 32 der Halterung 16 eingeführt werden kann. Durch den ringförmigen Absatz an der Scheibe 18 wird diese mit Abstand zu der Scheibe 26 der Halterung 16 festgelegt, so dass innerhalb des Abschnitts 32 zwischen der Scheibe 26 und der Scheibe 18 ein Freiraum verbleibt.The portion 32 of the holder 16 is provided for receiving the write 18. For this purpose, an annular shoulder in the outer contour of this disc 18 is provided on an end face of the disc 18. The disc 18 thus has a region with a diameter which ensures that this region of the disc 18 can be inserted accurately into the region 32 of the holder 16. Due to the annular shoulder on the disc 18, this is set at a distance from the disc 26 of the holder 16, so that within the portion 32 between the disc 26 and the disc 18 remains a free space.

Die Scheibe 18 weist fünf Durchgangskanäle auf, wobei ein Kanal 38 zentral in Richtung der Mittelachse durch die Scheibe 18 geführt ist, die vier übrigen Kanäle 40 in gleichen Abständen um den Kanal 38 herum angeordnet sind, wobei die Ausrichtung der Kanäle 40 schräg zur Ausrichtung des auf der Mittelachse A angeordneten Kanals 38 verläuft und sich die Mittelachsen der einzelnen Kanäle 38 und 40 nicht schneiden. So schneidet keine der Längsachsen der Kanäle 38 und 40 die Längsachsen der Düse 20.The disc 18 has five through channels, with a channel 38 centrally guided in the direction of the central axis through the disc 18, the four remaining channels 40 are arranged at equal intervals around the channel 38, wherein the orientation of the channels 40 obliquely to the orientation of Arranged on the central axis A channel 38 and the central axes of the individual channels 38 and 40 do not intersect. Thus, none of the longitudinal axes of the channels 38 and 40 intersect the longitudinal axes of the nozzle 20.

Ist die Scheibe 18 in die Halterung 36 eingeschoben, schließt die freiliegende Umfangsfläche der Scheibe 18 bündig mit der Umfangsfläche der Halterung 16 ab. Dabei sind die Halterung 16 und die Scheibe 18 so dimensioniert, dass die Halterung 16 und die Scheibe 18 mit geringem Spiel in den Rohrabschnitt 4 des Gehäuses 2 eingeschoben werden kann.If the disc 18 is inserted into the holder 36, the exposed peripheral surface of the disc 18 is flush with the peripheral surface of the holder 16 from. The holder 16 and the disc 18 are dimensioned so that the holder 16 and the disc 18 can be inserted with little play in the pipe section 4 of the housing 2.

Die Düse 20 ist ebenfalls zur Anordnung in dem Rohrabschnitt 4 des Gehäuses 2 vorgesehen und schließt sich im eingebauten Zustand in Strömungsrichtung direkt an die Scheibe 18 an. In Richtung ihrer Mittelachse weist die Düse 20 einen Durchgangskanal 42 auf. Dieser Durchgangskanal ist konisch ausgebildet. An der Stirnseite der Düse 20, die im eingebauten Zustand der Scheibe 18 zugewandt ist, nimmt die Öffnung des Durchgangskanals 42 nahezu die gesamte Stirnfläche ein. Der Durchgangskanal 42 verjüngt sich ausgehend von dieser Öffnung soweit, das an der anderen Stirnseite der Düse 20 nur eine sehr kleine Öffnung entsteht. Die Außenkontur der Düse 20 korrespondiert mit der Innenkontur des Rohrabschnitts 4 des Gehäuses 2, so dass die Düse 20 mit geringem Spiel in dem Rohrabschnitt 4 eingeführt werden kann. An der Außenkontur der Düse 20 ist über den gesamten Umfang eine Nut eingearbeitet, welche zur Aufnahme eines Dichtringes dient.The nozzle 20 is also provided for arrangement in the pipe section 4 of the housing 2 and adjoins in the installed state in the flow direction directly to the disk 18 at. In the direction of its central axis, the nozzle 20 has a passage 42. This passage is conical. On the front side of the nozzle 20, which faces in the installed state of the disc 18, the opening of the passage channel 42 occupies almost the entire end face. The passageway 42 tapers from this opening so far that only a very small opening is formed on the other end face of the nozzle 20. The outer contour of the nozzle 20 corresponds to the inner contour of the pipe section 4 of the housing 2, so that the nozzle 20 can be inserted with little play in the pipe section 4. On the outer contour of the nozzle 20, a groove is incorporated over the entire circumference, which serves to receive a sealing ring.

An die Düse 20 schließt sich das Bauteil 22 an, dessen Durchgangskanal 44 im Wesentlichen zweigeteilt ist, mit einem zylindrischen Abschnitt 46, an den sich ein konischer Abschnitt 48 anschließt. Der Durchmesser des Durchgangskanals 44 ist in dem zylindrischen Abschnitt 46 größer als der engste Querschnitt des Durchgangskanals 42. Im Abschnitt 48 vergrößert sich der Durchmesser des Durchgangskanals 44 ausgehend von dem Durchmesser in dem Bereich 46, bis er an der von dem Bereich 46 abgewandten Stirnfläche des Bauteils 22 seinen größten Durchmesser aufweist. Das Bauteil 22 weist eine im Wesentlichen kegelförmige äußere Kontur auf, wobei es sich ausgehend von seinem in der Zeichnung unteren Ende in der Richtung seines oberen, der Düse 20 zugewandten Endes kontinuierlich verjüngt und an dem oberen Ende abgerundet in eine flanschartige Erweiterung übergeht. So bildet die Außenkontur des Bauteils 22 einen sich um den gesamten Umfang erstreckenden Ringraum 50. An dem Bauteil 22 ist eine Bohrung vorgesehen, die quer zur Mittelachse des Bauteils 22 den Ringraum 50 mit dem Durchgangskanal 44 im Abschnitt 46 verbindet. Durch die Bohrung ist ein Rohr 51 geführt, welches an der Außenseite des Bauteils 22 bündig abschließt und innerhalb des Bauteils 22 in den Abschnitt 46 des Durchgangskanals 44 hineinragt und dort nahe der Mittelachse des Durchgangskanals 44 endet. An dem der Düse 20 zugewandten Ende des Bauteils 22 ist kreisförmig und konzentrisch zur Mittelachse in der Stirnfläche eine Nut 66 vorgesehen, die zur Aufnahme eines Dichtrings dient, mit dem das Bauteil 22 gegenüber dem Gehäuse 2 an der Ringschulter 8 abgedichtet werden kann.The nozzle 20 is followed by the component 22, whose through-passage 44 is essentially divided into two, with a cylindrical portion 46, to which a conical portion 48 adjoins. The diameter of the passageway 44 in the cylindrical portion 46 is greater than the narrowest cross section of the passageway 42. In the portion 48, the diameter of the passageway 44 increases from the diameter in the region 46 until it has its largest diameter at the end face remote from the region 46 of the component 22. The component 22 has a substantially conical outer contour, wherein it continuously tapers from its lower end in the drawing in the direction of its upper, the nozzle 20 end facing and merges rounded at the upper end in a flange-like extension. Thus, the outer contour of the component 22 forms an annular space 50 extending around the entire circumference. Provided on the component 22 is a bore which connects the annular space 50 to the passage 44 in the portion 46 transversely to the central axis of the component 22. Through the bore, a pipe 51 is guided, which terminates flush on the outside of the component 22 and protrudes within the component 22 in the portion 46 of the through-channel 44 and ends there near the central axis of the through-channel 44. At the nozzle 20 facing the end of the component 22 is a circular groove 66 and concentric with the central axis in the end face provided, which serves to receive a sealing ring, with which the component 22 relative to the housing 2 can be sealed to the annular shoulder 8.

Um die Öffnung des Durchgangskanals 44 im Bereich des Abschnitts 48 ist an der Stirnfläche des Bauteils 22 ein Innenabsatz 52 vorgesehen, der zur passgenauen Aufnahme der kreisförmigen Lochscheibe 24 dient. Dabei nimmt der Innensatz 52 die Lochscheibe 24 so auf, dass die Lochscheibe 24 bündig mit der Stirnfläche des Bauteils 22 abschließt. Der Innenabsatz 52 weist eine Nut 68 auf. Über einen in der Nut 68 angeordneten Dichtring wird der Kontaktbereich zwischen dem Innenabsatz 52 des Bauteils 22 und der Lochscheibe 24 abgedichtet.To the opening of the passage 44 in the region of the portion 48, an inner shoulder 52 is provided on the end face of the component 22, which serves for accurately fitting receiving the circular perforated disc 24. In this case, the inner set 52 receives the perforated disc 24 so that the perforated disc 24 terminates flush with the end face of the component 22. The inner shoulder 52 has a groove 68. Via a sealing ring arranged in the groove 68, the contact area between the inner shoulder 52 of the component 22 and the perforated disc 24 is sealed.

An der Lochscheibe 24 sind zwölf kreisrunde Löcher vorgesehen. Dabei sind jeweils vier Löcher auf drei zueinander konzentrischen Kreisen angeordnet. Die auf dem inneren und dem äußeren Kreis angeordneten Durchgangslöcher 54 weisen die gleiche Winkelausrichtung auf und sind paarweise auf gemeinsamen Radien der Lochscheibe 24 angeordnet, während die auf dem dazwischen liegenden Kreis angeordneten Löcher 54 zu denen auf dem inneren und äußeren Kreis angeordneten Löcher 54 um 45° versetzt angeordnet sind.At the perforated disc 24 twelve circular holes are provided. In each case, four holes are arranged on three concentric circles. The through holes 54 disposed on the inner and outer circles have the same angular orientation and are arranged in pairs on common radii of the perforated disc 24, while the holes 54 disposed on the intervening circle are spaced apart from those on the inner and outer circles by 45 ° ° are arranged staggered.

Zum Befestigen der kanalbildenden Bauteile in dem Gehäuse 2 ist ein Befestigungsring 56 vorgesehen. Der Befestigungsring 56 weist ein Außengewinde 58 auf, mit dem er in ein Innengewinde 60 am Gehäuse 2 eingeschraubt ist. Der Innendurchmesser des Befestigungsring 56 ist kleiner als der Außendurchmesser der Lochscheibe 24 ausgelegt.For fixing the channel-forming components in the housing 2, a fastening ring 56 is provided. The fastening ring 56 has an external thread 58 with which it is screwed into an internal thread 60 on the housing 2. The inner diameter of the fastening ring 56 is designed smaller than the outer diameter of the perforated disc 24.

Fig. 2 zeigt den Duschkopf nach der Montage aller kanalbildenden Bauteile in dem Gehäuse 2. An dem Wassereinlass 3 liegt die Halterung 16 mit dem darin festgelegten Durchflussmengenbegrenzer 14, dem Sieb 12 und der Scheibe 18 passgenau an der Ringschulter 10 an. Dabei schließen sowohl die Halterung 16 als auch der daran überstehende Abschnitt der Schreibe 18 passgenau mit der Wandung des Rohrabschnitts 4. Gleiches gilt für die Düse 20, die sich in Richtung der Mittelachse A an der Scheibe 18 abstützt. Dabei ist zwischen der Wandung des Rohrabschnitts 4 und der Außenwandung der düse 20 eine Dichtring 62 angeordnet. Die Düse 20 endet bündig mit dem Rohrabschnitt 4 an dessen Übergang in den Rohrabschnitt 6. Dort stützt sich das Bauteil 22 sowohl an der Ringschulter 8 des Gehäuses 2 als auch an der Stirnfläche der Düse 20 ab. Zusammen mit der Wandung des Gehäuses 2 in dem Rohrabschnitt 6 bildet der Ringraum 50 des Bauteils 22 eine Kammer 64, die sich um das gesamte Bauteil 22 erstreckt. Die Kammer 64 ist über das Rohr 51 mit dem Durchgangskanal 44 im Abschnitt 46 leitungsverbunden. An dem Ende des Bauteils 22 im Bereich des Abschnitts 48 des Durchgangskanals 44 ist die Lochscheibe 24 eingelegt. An diese schließt sich der eingeschraubte Befestigungsring 56 an, der gegen die Lochscheibe 24 und das Bauteil 22 drückt und so alle kanalbildenden Bauteile gegen die Ringschulter 10 festlegt. Fig. 2 shows the shower head after the assembly of all channel-forming components in the housing 2. At the water inlet 3, the holder 16 with the therein set flow rate limiter 14, the screen 12 and the disc 18 fits snugly against the annular shoulder 10. Both the holder 16 and the protruding portion of the write 18 close fit with the wall of the pipe section 4. The same applies to the nozzle 20, which is supported in the direction of the central axis A on the disc 18. In this case, a sealing ring 62 is disposed between the wall of the pipe section 4 and the outer wall of the nozzle 20. The nozzle 20 ends flush with the pipe section 4 at its transition into the pipe section 6. There, the component 22 is supported both on the annular shoulder 8 of the housing 2 and on the end face of the nozzle 20 from. Together with the wall of the housing 2 in the pipe section 6, the annular space 50 of the component 22 forms a chamber 64 which extends around the entire component 22. The chamber 64 is conductively connected via the pipe 51 to the passage 44 in the section 46. At the end of the component 22 in the region of the portion 48 of the passage 44, the perforated disc 24 is inserted. This is followed by the screwed fastening ring 56, which presses against the perforated disc 24 and the component 22 and thus defines all channel-forming components against the annular shoulder 10.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

22
Gehäusecasing
33
Wassereinlasswater inlet
44
Rohrabschnittpipe section
66
Rohrabschnittpipe section
88th
Ringschulterannular shoulder
1010
Ringschulterannular shoulder
1111
Außengewindeexternal thread
1212
Siebscree
1414
Durchflussmengenbegrenzerflow limiter
1616
Halterungbracket
1818
Scheibedisc
2020
Düsejet
2222
Bauteilcomponent
2424
Lochscheibeperforated disc
2626
Scheibedisc
2828
Lochhole
3030
Abschnittsection
3232
Abschnittsection
3434
Absatzparagraph
3636
Absatzparagraph
3838
Kanalchannel
4040
Kanalchannel
4242
DurchgangskanalThrough channel
4444
DurchgangskanalThrough channel
4646
Abschnittsection
4848
Abschnittsection
5050
Ringraumannulus
5151
Rohrpipe
5252
Innenabsatzinternal sales
5454
Lochhole
5656
Befestigungsringfixing ring
5858
Außengewindeexternal thread
6060
Innengewindeinner thread
6262
Dichtringseal
6464
Kammerchamber
6666
Nutgroove
6868
Nutgroove
AA
Mittelachsecentral axis

Claims (14)

  1. A shower head comprising a water inlet (3) at the inlet side and a water outlet line-connected thereto via a flow duct, wherein provision is made in the flow duct between the water inlet (3) and the water outlet for a nozzle-like cross sectional tapering (20), which is followed in flow direction by a widened duct section (46) comprising a constant cross section, which is line-connected to at least one closed cavity (64) as well as a duct section (44), which subsequently widens preferably conically in the direction of the water outlet follows, characterized in that provision is made at the output side thereon for a cross sectional widening (48) to the water outlet as well as provision is made thereon at the outlet side for a widened duct section comprising a constant cross section (52), wherein the water outlet is formed by a plurality of outlet openings (54).
  2. The shower head according to claim 1, characterized in that the outlet openings (54) are arranged on a plurality of circles, which are concentric to the center axis of the water outlet, preferably in a plane at right angles to the flow direction.
  3. The shower head according to any one of the preceding claims, characterized in that the line connection between the cavity (64) and the flow duct (46) encompasses a tube (51), the free end of which opens into the flow duct (46) close to its center axis (A) remotely from the flow direction.
  4. The shower head according to any one of the preceding claims, characterized in that the flow duct is formed at the input side of the nozzle-like cross sectional tapering (20) by a plurality of individual ducts (40), which are oriented so as to be beveled to the longitudinal axis of the flow duct, which follows thereon, wherein the longitudinal axes of the individual ducts (40) do not intersect the longitudinal axis of the flow duct (42) following thereon.
  5. The shower head according to claim 6, characterized in that the beveled individual ducts (44) are arranged within a disk (18).
  6. The shower head according to any one of the preceding claims, characterized in that the shower head encompasses a flow limiting device (14), which is arranged in the region between the line connection (11) and the nozzle-like cross sectional tapering (20).
  7. The shower head according to claim 6, characterized in that a screen (12) is arranged at the input side of the flow limiting device (14).
  8. The shower head according to any one of claims 5 to 7, characterized in that the components according to claims 5 to 7 are combined to a structural unit (18), which can be handled as one piece.
  9. The shower head according to any one of the preceding claims, characterized in that the nozzle-like cross sectional tapering (20) of the flow duct is formed by a rotation-symmetrical component (20).
  10. The shower head according to any one of the preceding claims, characterized in that the flow duct between the cross sectional tapering (20) and the water outlet is formed by a rotation-symmetrical component (22), wherein provision is made on the outside of the component (22) for a space (50), which preferably extends in a ringshaped manner about the periphery thereof.
  11. The shower head according to claim 12, characterized in that provision is made on the component (22) for a tube (51), which on the one hand opens into the central through hole (44) of said component (22) and on the other hand at the space (50) on the exterior.
  12. The shower head according to any one of the preceding claims, characterized in that the outlet openings (54) are formed by a perforated disk (24), which is arranged at the runoff end of the shower head.
  13. The shower head according to any one of the preceding claims, characterized in that the shower head encompasses a tubular housing (2) in which the components forming the duct are either arranged at a distance from one another or are arranged so as to be fixed in a sandwich-like manner.
  14. The shower head according to claim 15, characterized in that the component (16) according to claim 10, the component (20) according to claim 11, the component (22) according to claim 12 and the perforated disk (24), which are fixed between a bearing shoulder (10), which projects in the direction of the housing interior close to the line connection (11) and a fastening ring (56), which can be assembled on the runoff end of the housing (2), are arranged in the housing (2) in flow direction originating from the line connection.
EP06004884A 2005-03-14 2006-03-10 Shower head Active EP1738832B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520004182 DE202005004182U1 (en) 2005-03-14 2005-03-14 Shower head has water outlet formed by number of outlet orifices which are located on several circles concentric to center axis of water outlet and preferably in plane at right angles to direction of flow

Publications (2)

Publication Number Publication Date
EP1738832A1 EP1738832A1 (en) 2007-01-03
EP1738832B1 true EP1738832B1 (en) 2009-09-02

Family

ID=34639075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06004884A Active EP1738832B1 (en) 2005-03-14 2006-03-10 Shower head

Country Status (3)

Country Link
EP (1) EP1738832B1 (en)
AT (1) ATE441483T1 (en)
DE (2) DE202005004182U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011039647A2 (en) * 2009-09-29 2011-04-07 Jmi Group Limited Shower head
JP6358613B2 (en) * 2014-06-16 2018-07-18 株式会社ｍｉｃｒｏ−ｂｕｂ Shower head that can provide a shower experience without a watering plate
EP3447200A1 (en) * 2017-08-21 2019-02-27 Smixin SA Liquid jet shaper

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR628905A (en) * 1926-08-06 1927-10-31 Device for watering plants, delivering the water taken directly to the distribution pipe without pressure
DE3828111A1 (en) * 1988-08-18 1990-02-22 Broeker Ernst H Fitting for connection to conventional pressurised water lines in households, baths, hotels or the like
DE9418847U1 (en) * 1994-11-24 1995-02-16 Zvonko, Zdjelar, 22119 Hamburg Single hole shower head
AU1521397A (en) * 1996-01-03 1997-08-01 Raymond C Engel Water conserving low pressure shower head
US6708902B2 (en) 2000-03-17 2004-03-23 Toto Ltd. Foam water delivery port

Also Published As

Publication number Publication date
EP1738832A1 (en) 2007-01-03
DE502006004713D1 (en) 2009-10-15
ATE441483T1 (en) 2009-09-15
DE202005004182U1 (en) 2005-06-02

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