EP2632603B1 - Device for spraying a liquid under pressure - Google Patents
Device for spraying a liquid under pressure Download PDFInfo
- Publication number
- EP2632603B1 EP2632603B1 EP11764459.1A EP11764459A EP2632603B1 EP 2632603 B1 EP2632603 B1 EP 2632603B1 EP 11764459 A EP11764459 A EP 11764459A EP 2632603 B1 EP2632603 B1 EP 2632603B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swirl
- chamber
- axis
- longitudinal
- chambers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims description 26
- 238000005507 spraying Methods 0.000 title claims description 5
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 238000004140 cleaning Methods 0.000 description 8
- 230000007704 transition Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003599 detergent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
-
- 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
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/40—Filters located upstream of the spraying outlets
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S239/00—Fluid sprinkling, spraying, and diffusing
- Y10S239/17—Low volume
Definitions
- the present invention relates to a device for spraying a pressurized liquid, in particular water, with which a very good cleaning effect can be achieved despite a very low flow rate.
- a device for spraying a pressurized liquid, in particular water, with which a very good cleaning effect can be achieved despite a very low flow rate.
- Such a device can be designed in particular as a mouthpiece for sanitary outlet fittings or as an insert for a shower head or the like.
- Such a vortex chamber is eg in RU 2 196 205 disclosed.
- the vortex chamber shown there has a conical shape.
- the water is supplied to the vortex chamber in the region of the largest cross section of the cone through a tangential inlet channel and leaves the vortex chamber through an axial outlet channel.
- a whirl chamber is also in WO 2008/073062 disclosed.
- This document discloses a mouthpiece for a sanitary outlet fitting, which is switchable between a economy mode and a normal mode.
- economy mode the incoming water is introduced tangentially through two channels from opposite sides into a short, cylindrical vortex chamber from which it exits axially through a central outlet opening.
- normal mode the water passes bypassing the vortex chamber to the central outlet opening and also to several other, decentralized outlet openings, so that a much larger volume flow is achieved.
- a spray head for spraying highly viscous liquids which in one embodiment has vortex chambers.
- the liquid jets emerging from the vortex chambers then meet one another.
- EP 1 277 516 and WO 93/23174 each disclose a spray head with two nozzles, the vortex channels and are directed towards each other, that meet the resulting rays.
- the device should be simple and inexpensive to produce in large quantities. This object is achieved by a device having the features of claim 1. Further embodiments are given in the dependent claims.
- each of the outlet nozzles defines a nozzle longitudinal axis (in the case of an at least sectionally cylindrical outlet nozzle, the nozzle longitudinal axis is identical to the cylinder axis).
- the nozzle longitudinal axes are inclined relative to each other such that liquid jets emerging from the outlet nozzles meet at a predetermined distance from the outlet nozzles. This is achieved by that the nozzle longitudinal axes outside the device substantially intersect at an intersection having the mentioned distance from the outlet nozzles.
- a device which produces a significantly improved cleaning effect at the same time low volume flow compared to a single vortex chamber. If e.g. three swirl chambers are used, it is possible to achieve an excellent cleaning action for washing hands at a normal line pressure of about 3 bar and a total flow of only 0.6 l / min. Since the liquid jets leave the outlet nozzles in finely divided form thanks to the vortex chambers, it is completely unproblematic if these rays impinge on the skin of a user before the rays meet with each other.
- the device can be used in a variety of ways.
- the device may e.g. as a mouthpiece for a sanitary outlet fitting for cold or hot tap water, e.g. be formed on a washbasin or bidet.
- the device may e.g. also as a spray head of a shower toilet, as a normal shower head shower head, as a replaceable use of such a shower head, as a spray head in a spa, etc. are used.
- use is e.g. in the camping area possible, for example in a motor home or caravan, or on vanities or even showers in aircraft.
- the liquid to be sprayed does not necessarily have to be water, but may e.g. also be a detergent solution provided with detergents.
- the invention can be used to advantage in all applications in which a good cleaning performance is desired at a low flow rate.
- the device has at least three vortex chambers with associated outlet nozzles whose liquid jets meet.
- a reasonable upper limit for the number of vortex chambers seems to be around ten.
- the vortex chambers and outlet nozzles are preferably arranged annularly around a central device longitudinal axis. In this case, the outlet nozzles are preferably distributed uniformly along the circumferential direction of the ring. However, other arrangements can be selected.
- the axial distance from the outlet nozzles, at which the liquid jets meet, is preferably between 40 mm and 150 mm, but may also take on larger values depending on the application. For use in sanitary outlet fittings, a distance of about 80 mm is preferred. For typical dimensions of mouthpieces for sanitary outlet fittings and an annular arrangement of the outlet nozzles, this distance corresponds to an angle of inclination of the nozzle longitudinal axes relative to the central device longitudinal axis of about 3 °. Depending on the dimensions of the device and the intended application, however, this angle of inclination may also be greater or smaller and is 1 ° -10 °, preferably about 2 ° -5 °
- a vortex chamber is understood to mean a chamber which, by virtue of its geometry, causes a vortex about a vortex axis due to its geometry (ie generates a vortex around the vortex axis) and which has an outlet nozzle such that the water is substantially axial exits to the vortex axis.
- the vortex chamber is preferably designed as follows.
- the vortex chamber defines a chamber longitudinal axis.
- the inlet of the vortex chamber is formed in an inlet region of the vortex chamber such that the supply of the liquid into the vortex chamber takes place essentially tangentially with respect to the chamber longitudinal axis.
- the outlet nozzle is arranged essentially centrally with respect to the longitudinal axis of the chamber.
- the nozzle longitudinal axis and the chamber longitudinal axis extend either coaxially or include an angle of at most 15 ° to each other, preferably at most 10 °, more preferably at most 5 °.
- the chamber longitudinal axes of the vortex chambers are substantially parallel to each other, and in particular parallel to a common longitudinal axis device, while the nozzle longitudinal axes are inclined to the longitudinal axis of the chamber or the device longitudinal axis.
- the outlet nozzle is arranged axially spaced from the inlet region with respect to the longitudinal axis of the chamber.
- the vortex chamber preferably tapers in a funnel shape between the inlet region and the outlet nozzle.
- each of the vortex chambers preferably has a substantially conical region in which the cross section of the vortex chamber tapers continuously along the chamber longitudinal axis as far as the outlet nozzle.
- This conical area can be a substantially cylindrical Axial and upstream upstream region, which is arranged between the inlet region and the conical region.
- substantially cylindrical are also to consider shapes that differ to a small degree from a purely cylindrical shape, without significantly changing the function of this area, eg frusto-conical shapes with a small opening angle, especially when the opening angle (angle between diametrically opposite lateral surface areas ) is less than 2 x 10 ° or even less than 2 x 5 °.
- a cam in each of the vortex chambers, may be arranged, which extends centrally along the chamber longitudinal axis in the inlet region of the vortex chamber, so that the inlet region of the vortex chamber forms an annular cavity.
- the cam is preferably cylindrical in shape, but may e.g. also assume a truncated cone shape.
- the outlet nozzles are preferably formed by cylindrical bores. However, even if the outlet nozzles should have a different shape, preferably each outlet nozzle has at its end a cylindrical outlet region, which is adjoined externally by a substantially flat outlet surface which is orthogonal to the cylinder axis. In particular, the outlet nozzle preferably does not expand outwardly at its exterior end. Between the exit region and the associated exit surface, a sharp edge is preferably formed in order to facilitate the detachment of the liquid jet from the outlet nozzle. Overall, this results in a clean spray pattern.
- the vortex chambers are at least partially, but at least the outlet nozzles are formed in a common (preferably one-piece) vortex chamber element. It is preferred in terms of production engineering if, in the swirl chamber element, a flat, preferably frusto-conical recess is formed on the outside in the region of each outlet nozzle, whose conical axis coincides with the nozzle axis and which Exit surface forms.
- the apparatus has a liquid central supply channel extending along a device axis, which can optionally taper in the axial direction to achieve a first acceleration of the incoming liquid stream.
- the vortex chambers are then arranged decentralized to the device axis, e.g. annular around the device axis, and the inlet channels connect the feed channel to the vortex chambers substantially transverse to the device axis.
- An improved vortex formation can be achieved if each of the inlet channels from the feed channel describes an arc with an angle of at least 90 °.
- each of the inlet channels has a rectangular cross-section. It is preferred if the cross section is substantially constant over the length of the inlet channel.
- the cross-sectional area of the inlet channels has a significant influence on the volume flow at a given operating pressure.
- the volume flow can thus be adjusted for a given operating pressure. This eliminates the use of a separate flow restrictor.
- the device is manufactured particularly simply because it has a (preferably one-piece) supply element and a (preferably also one-piece) swirl chamber element which are interconnected (in particular rest on one another) so that together they delimit at least a portion of each inlet channel, the vortex chambers at least partially formed by depressions (eg holes) in the vortex chamber element. It is preferred that the vortex chamber element and the feed element with respect to the longitudinal axis of the device rest on the front side, ie substantially along a common plane which is perpendicular to the device longitudinal axis, rest on each other.
- the inlet channels through depressions (eg grooves) in Feed element are formed, while the swirl chamber element has a supply element facing end face, which is substantially flat in the region of the inlet channels, so as to limit the inlet channels together with the feed element.
- the device can also be adapted very easily to different pressure ranges by merely exchanging the feed element for another feed element with a different cross-sectional area of the inlet channels, while the vortex chamber element can remain unchanged independently of the pressure range.
- At least one decentralized positioning cam can be formed on the feed element or swirl chamber element, which engages in a complementary positioning groove on the other element.
- positioning can also be achieved in other ways, e.g. by the provision of laterally perforated hollow pins, which are formed on the feed element and protrude in a region surrounding the inlet region of the vortex chambers in depressions of the vortex chamber element.
- the feed element and the swirl chamber element can be jointly held in a receiving sleeve such that the feed element, the swirl chamber element and the receiving sleeve together form a replaceable unit ("service unit").
- the swirl chamber element abut against an inside axial stop of the receiving sleeve (if necessary, with a gasket disposed therebetween), while the feed element rests on the swirl chamber element and is held on the receiving sleeve, e.g. through a snap connection.
- one or more snap arms can be formed on the feed element, which engage in corresponding inner recesses of the receiving sleeve.
- FIGS. 3 and 6 a mouthpiece 1 a sanitary outlet fitting according to a first embodiment of the invention is shown.
- An outer sleeve 2 has a connecting thread 3, which fits in commercial washbasin taps.
- a receiving sleeve which is referred to below as the inner sleeve 4
- a feed element which is referred to below as the housing insert 5
- a swirl chamber element which is referred to below as a swirl disk 6 added.
- these parts are preferably made of a dirt and lime repellent material.
- the housing insert 5 and / or the swirl disk 6 can be manufactured by injection molding of plastic.
- the housing insert 5 is in the FIGS. 3 to 6 additionally shown in different views alone.
- a snapped in the housing insert 5 particulate filter 7 prevents the ingress of dirt or sand particles in the mouthpiece.
- a seal 8 in the form of a sealing ring with a square or rectangular cross section establishes a seal between the outlet fitting and the interior of the inner sleeve 4.
- a further seal 9 in the form of an O-ring establishes a seal between the inner sleeve 4 and the swirl disk 6.
- a central bore 10 is formed, which tapers stepwise down to a cylindrical feed channel 11.
- the bore 10 defines with its cylinder axis a central device longitudinal axis 21.
- three inlet channels 13 extend transversely to the device longitudinal axis 21 to three decentralized, circumferentially about the device longitudinal axis arranged vortex chambers 14.
- Each of the inlet channels 13 initially extends radially in a radial portion 12 substantially radially outwards and then describes an arc of something more than 180 °, before it opens tangentially into the respective vortex chamber 14.
- the inlet channels are formed as recesses with a rectangular cross section in that end face of the housing insert 5, which is opposite to the vortex disc 6.
- the opposite end face of the swirl disk 6 is flat and smooth in the region of the inlet channels 13. In this way, the housing insert 5 and the swirl disk 6 together define the inlet channels 13.
- Each of the vortex chambers 14 has an inlet region 29, into which the associated inlet channel 13 opens substantially tangentially.
- the inlet region 29 is formed in the housing insert 5 as an annular cavity with a rectangular cross-section.
- a cylindrical pin 27 is arranged, which is formed on the housing insert 5 and extends from above into the inlet region.
- the length of the pin substantially corresponds to the height of the inlet channels, so that the pin axially ends in the common plane which separates the housing insert 5 and the swirl disk 6.
- a cylindrical region 15 (transition region) in the form of a cylindrical bore in the swirl disk 6 adjoins the inlet region 29 in an axial direction, which in turn is followed by a conically tapered region 16.
- the tapered region 16 opens into a centrally disposed, axially extending, cylindrical outlet nozzle 18.
- the outlet nozzle 18 terminates at a right angle to the cylinder axis of the nozzle extending exit surface 17, wherein between the cylindrical nozzle bore and the exit surface is formed a sharp edge.
- the exit surface is formed by a flat, frusto-conical recess 19 in the outer side end face of the vertebral disc 6 and thereby has a ring shape.
- each swirl chamber 14 defines a chamber longitudinal axis 32.
- the cylinder axis of the associated outlet nozzle 18 defines a nozzle longitudinal axis 20.
- the chamber longitudinal axis 32 and the nozzle longitudinal axis 20 coincide and are tilted together by approximately 3 ° to the device longitudinal axis 21.
- the nozzle longitudinal axes 20 meet at a common point of intersection at a distance of about 80 mm from the exit surfaces of the nozzles.
- the chamber longitudinal axis and the longitudinal axis of the nozzle may alternatively assume a small angle to one another. This will be explained below in connection with the Fig. 12 explained in more detail.
- water passes axially through the particulate filter 7 (whose mesh is less than the smallest cross-sectional dimension of the inlet channels 13 and the outlet nozzles 18) into the central bore 10 and from there into the feed channel 11. Due to the tapered shape of the central bore 10 of the water flow is thereby accelerated a first time.
- the water is distributed to the inlet channels 13 and thereby deflected.
- the water is fed to the vortex chambers 14.
- the water enters tangentially into the inlet region 29 of each vortex chamber 14 and begins to describe a spiral movement there.
- the central cam 27 in the inlet region additionally supports the formation of a vortex movement.
- the resulting vortex now moves down the cylindrical portion 15 and is further accelerated in the tapered portion 16 before entering the outlet nozzle 18.
- the water leaves the outlet nozzle 18 at high speed and is thereby broken up into fine droplets.
- the sharp-edged design of the transition between the cylindrical nozzle bore and the exit surface 17 supports a clean detachment of the water jet. In this way, a finely divided, directed beam without excessive formation of non-directional spray.
- These previously divided water jets meet each other approx. 80 mm below the exit surface at the intersection of the longitudinal axis of the nozzles and ensure optimum cleaning performance in this area.
- the hands can be completely moistened for washing, and also soap or other cleaning agents can easily be rinsed off again by the hands.
- the dimensions of the mouthpiece e.g. as follows: Outer diameter of the mouthpiece approx. 24 mm; Distance of the nozzle outlets from the central longitudinal axis of the device approx. 4.2 mm; Inclination angle of the nozzle longitudinal axis and the chamber longitudinal axis to the device longitudinal axis about 3 °; Cross section of the inlet channels rectangular, approx. 1 mm wide, 0.5 mm deep; resulting volume flow at a flow pressure of 3 bar is approx. 0.2 l / min per outlet nozzle (total volume flow approx. 0.6 l / min).
- these parameters can be varied within wide ranges. In particular, can be adjusted by a suitable choice of the cross-sectional area of the inlet channels, a larger or smaller volume flow at a given flow pressure, or the mouthpiece can be adapted to different pressure conditions at a given volume flow.
- a mouthpiece according to a second embodiment of the invention is in the FIGS. 7 and 8 illustrated.
- the structure of this mouthpiece largely corresponds to the first embodiment, and like-acting parts are provided with the same reference numerals as in the first embodiment.
- the snap arms 23 on the housing insert 5 well recognizable, which go together with the inner sleeve the already mentioned snap connection.
- This embodiment differs from the first embodiment mainly by the manner in which the housing insert 5 and the swirl disk 6 are secured relative to each other against rotation.
- each hollow pin 25 is interrupted by an opening 31.
- this embodiment also eliminates the central pin 27, which projects axially into the inlet region 29 of the vortex chamber 14 in the first embodiment.
- a mouthpiece according to a third embodiment is in the FIGS. 9 and 10 illustrated. Again, like-acting parts are given the same reference numerals as in the first embodiment.
- the inlet channels 13 have a different shape than in the first two embodiments;
- the inlet channels are not formed as depressions in the housing insert 5, but as depressions in the end face of the vertebral disk 6. Instead of an arcuate shape with a constant cross section, the inlet channels here have a fan-shaped shape with a strongly tapering cross-section. As a result, an acceleration of the water flow takes place here in the inlet channels.
- a mouthpiece according to a fourth embodiment is in FIG. 11 shown. Again, like-acting parts are given the same reference numerals as in the first embodiment.
- the cross section of the inlet channels 13 is here semicircular instead of rectangular.
- a commercially available flow restrictor 28 is used in the central bore 10 .
- the mouthpiece can be adapted to higher flow pressures in a very simple manner, without changing the dimensions.
- a mouthpiece according to a fifth embodiment of the invention is in the FIG. 12 illustrated.
- the structure of this mouthpiece largely corresponds to the first embodiment, and like-acting parts are again provided with the same reference numerals as in the first embodiment.
- This embodiment differs from the first embodiment in that the chamber longitudinal axis 32 of each vortex chamber does not coincide with the nozzle longitudinal axis 20 of the respective vortex chamber. Instead, here the chamber longitudinal axes 32 extend parallel to the device longitudinal axis 21, while only the nozzle longitudinal axes 20 are inclined by an angle of approximately 3 ° to the device longitudinal axis 21.
- the swirl chambers 14 can be machined from above parallel to the device longitudinal axis 21 (or, in the case of injection molding production, removed from the mold in parallel). Only the outlet nozzles 18 need to be processed or demoulded from below at an angle to the device longitudinal axis 21.
- FIGS. 13-15 another embodiment of a swirl disk 6 is illustrated.
- This vortex disc is in itself very similar to the vertebral disc of the first, fourth or formed fifth embodiment. However, it differs in some aspects, which are explained below.
- each transition region 15 ' forms a transition between the corresponding inlet region, which is formed in the housing insert 5 as in the first, fourth or fifth exemplary embodiment, and the conical region 16, to which the outlet nozzle 18 adjoins. While in the above first to fifth embodiments, the respective transition regions are exactly cylindrical, the transition regions in the present embodiment are slightly conical in order to facilitate demolding in a production by injection molding. Due to the small opening angle of the thus formed truncated cone of less than 2 ⁇ 5 °, these transitional areas are otherwise otherwise functionally equivalent to purely cylindrical transition areas.
- the vortex disc in the above embodiments is made substantially solid on the outlet side
- the vortex disc of this embodiment has a plurality of depressions, in particular a central blind hole 33 and three depressions 34 between the exit surfaces 17.
- the depressions 34 directly adjoin the exit surfaces 17 , so that the exit surfaces 17 themselves, unlike in the preceding examples, are no longer formed by frusto-conical recesses in the surrounding material. Rather, the surrounding material now only forms an inner ring 35 and an outer ring 36, which bound the exit surfaces in the radial direction.
- This design with blind hole 33 and recesses 34 is preferred for manufacturing reasons, since in this way the material thickness is nowhere excessively large, so that the vortex disc cools evenly during production by injection molding and cures.
- the vortex disc of this embodiment also has three positioning cams 37 on its outer circumference, which make it possible for the vortex disc 6 to be independent of the housing insert 5 in a fixed orientation in the inner sleeve 4 hold by corresponding guide grooves are provided in the inner sleeve.
- the housing insert is provided with corresponding cams, a mutual intervention of the intervertebral disk and the housing insert can be omitted.
- the device not only as a mouthpiece of an outlet fitting, but also as a shower head or as an insert for a shower head.
- the device it is particularly possible to form the device not only as a mouthpiece of an outlet fitting, but also as a shower head or as an insert for a shower head.
- the inlet channels may also be formed in a different manner than shown above and be formed, for example, as a straight running channels with a constant or variable cross-section.
- Swirl disk (swirl chamber element) 25 hollow pin 26 drilling 7 particulate Filter 27 central cam 8th poetry 28 flow 9 poetry 29 intake area 10 central hole 30
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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)
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum Versprühen einer unter Druck stehenden Flüssigkeit, insbesondere von Wasser, mit der ein sehr guter Reinigungseffekt trotz eines sehr geringen Volumenstroms erzielt werden kann. Eine solche Vorrichtung kann insbesondere als Mundstück für sanitäre Auslaufarmaturen oder als Einsatz für einen Duschkopf oder dergleichen ausgebildet sein.The present invention relates to a device for spraying a pressurized liquid, in particular water, with which a very good cleaning effect can be achieved despite a very low flow rate. Such a device can be designed in particular as a mouthpiece for sanitary outlet fittings or as an insert for a shower head or the like.
In vielen Gebieten der Erde ist Wasser ein kostbares Gut, welches sparsam eingesetzt werden muss. Vorrichtungen, die den Volumenstrom des durchlaufenden Wassers in Auslaufarmaturen, Duschköpfen oder dergleichen begrenzen, können hier einen wichtigen Beitrag leisten. Auch in Flugzeugen, Campingfahrzeugen usw. kann es wichtig sein, mit dem verfügbaren Wasser haushälterisch umzugehen.In many parts of the world, water is a precious commodity that needs to be used sparingly. Devices that limit the flow of water through the flow in outlet fittings, showerheads or the like, can make an important contribution here. Also in airplanes, camping vehicles, etc. it can be important to handle the available water economically.
Heute werden an sanitären Auslaufarmaturen meistens Mundstücke eingesetzt, die dem austretenden Wasser Luft beimischen. Hierdurch wird einerseits der ausfliessende Strahl angenehm weich. Andererseits kann der Volumenstrom des Wassers wesentlich reduziert werden. Typische Werte für den Volumenstrom (die Durchflussrate) liegen bei Waschtischen im Haushalt heute bei ca. 12 l/min (Liter pro Minute). Mit sogenannten Spardüsen lässt sich dieser Wert auf ca. 6-8 l/min reduzieren. Erwünscht sind aber noch wesentlich geringere Volumenströme.Today, mouthpieces are usually used on sanitary outlet fittings, which add air to the escaping water. As a result, on the one hand, the outflowing jet is pleasantly soft. On the other hand, the volume flow of the water can be significantly reduced. Typical values for the volume flow (the flow rate) for washbasins in the household today are approx. 12 l / min (liters per minute). With so-called economy nozzles this value can be reduced to approx. 6-8 l / min. Desirable but are still much lower flow rates.
Im Stand der Technik wurde dazu vorgeschlagen, das Wasser in eine Wirbelkammer einzuleiten, in der das Wasser in eine Wirbelbewegung versetzt wird. Durch anschliessende axiale Beschleunigung durch eine Düsenöffnung hindurch wird ein fein zerteilter Strahl erzeugt, der selbst bei einem geringen Volumenstrom eine gute Reinigungswirkung erzeugt.In the prior art was proposed to the water in a vortex chamber initiate, in which the water is put into a swirling motion. Subsequent axial acceleration through a nozzle opening produces a finely divided jet which produces a good cleaning effect even at a low volume flow.
Eine derartige Wirbelkammer ist z.B. in
Eine Wirbelkammer ist auch in
Während der Einsatz einer Wirbelkammer zu einer beträchtlichen Reduktion des Volumenstroms beitragen kann, ist die damit erzielbare Reinigungswirkung noch verbesserungsfähig.While the use of a vortex chamber can contribute to a considerable reduction of the volume flow, the cleaning effect achievable with it can still be improved.
Ein völlig anderer Ansatz wurde in der
Aus der
Es ist eine Aufgabe der vorliegenden Erfindung, eine Vorrichtung zum Versprühen einer unter Druck stehenden Flüssigkeit anzugeben, die bei normalem Leitungsdruck von ca. 2-5 bar betreibbar ist und trotz eines geringen Volumenstroms eine verbesserte Reinigungswirkung hervorbringt. Zudem soll die Vorrichtung einfach und kostengünstig in grossen Stückzahlen herstellbar sein. Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Weitere Ausführungsformen sind in den abhängigen Ansprüchen angegeben.It is an object of the present invention to provide a device for spraying a pressurized liquid, which is operable at normal line pressure of about 2-5 bar and produces an improved cleaning effect despite a low volume flow. In addition, the device should be simple and inexpensive to produce in large quantities. This object is achieved by a device having the features of
Die erfindungsgemässe Vorrichtung weist also auf:
- eine Mehrzahl von Wirbelkammern, wobei jede der Wirbelkammern mindestens einen Einlass zur Zuführung der Flüssigkeit in die jeweilige Wirbelkammer sowie eine Auslassdüse zum Austritt eines Flüssigkeitsstrahls aus der Wirbelkammer aufweist; sowie
- eine Anordnung von Einlaufkanälen, um einen in die Vorrichtung eintretenden Flüssigkeitsstrom auf die Einlässe der Wirbelkammern zu verteilen.
- a plurality of swirl chambers, each of the swirl chambers having at least one inlet for supplying the liquid into the respective swirl chamber and an outlet nozzle for exiting a liquid jet from the swirl chamber; such as
- an array of inlet channels to distribute a fluid stream entering the device to the inlets of the vortex chambers.
Dabei definiert jede der Auslassdüsen eine Düsenlängsachse (im Falle einer zumindest abschnittsweise zylindrischen Austrittsdüse ist die Düsenlängsachse identisch mit der Zylinderachse). Die Düsenlängsachsen sind derart zueinander geneigt, dass aus den Auslassdüsen austretende Flüssigkeitsstrahlen in einem vorbestimmten Abstand von den Auslassdüsen aufeinandertreffen. Dies wird dadurch erreicht, dass sich die Düsenlängsachsen ausserhalb der Vorrichtung im Wesentlichen an einem Schnittpunkt schneiden, der den erwähnten Abstand von den Auslassdüsen aufweist.In this case, each of the outlet nozzles defines a nozzle longitudinal axis (in the case of an at least sectionally cylindrical outlet nozzle, the nozzle longitudinal axis is identical to the cylinder axis). The nozzle longitudinal axes are inclined relative to each other such that liquid jets emerging from the outlet nozzles meet at a predetermined distance from the outlet nozzles. This is achieved by that the nozzle longitudinal axes outside the device substantially intersect at an intersection having the mentioned distance from the outlet nozzles.
Auf diese Weise wird eine Vorrichtung geschaffen, die gegenüber einer einzigen Wirbelkammer eine deutliche verbesserte Reinigungswirkung bei gleichzeitig geringem Volumenstrom erzeugt. Wenn z.B. drei Wirbelkammern eingesetzt werden, ist es möglich, bei einem normalen Leitungsdruck von ca. 3 bar und einem Volumenstrom von insgesamt lediglich 0.6 l/min eine ausgezeichnete Reinigungswirkung zum Händewaschen zu erzielen. Da die Flüssigkeitsstrahlen die Auslassdüsen dank den Wirbelkammern schon in fein zerteilter Form verlassen, ist es völlig unproblematisch, wenn diese Strahlen auf die Haut eines Benutzers auftreffen, bevor die Strahlen sich untereinander treffen.In this way, a device is provided which produces a significantly improved cleaning effect at the same time low volume flow compared to a single vortex chamber. If e.g. three swirl chambers are used, it is possible to achieve an excellent cleaning action for washing hands at a normal line pressure of about 3 bar and a total flow of only 0.6 l / min. Since the liquid jets leave the outlet nozzles in finely divided form thanks to the vortex chambers, it is completely unproblematic if these rays impinge on the skin of a user before the rays meet with each other.
Die Vorrichtung kann auf verschiedenste Weise eingesetzt werden. So kann die Vorrichtung z.B. als Mundstück für eine sanitäre Auslaufarmatur für kaltes oder warmes Leitungswasser, z.B. an einem Waschtisch oder Bidet, ausgebildet sein. Die Vorrichtung kann aber z.B. auch als Sprühkopf eines Dusch-WCs, als Duschkopf einer normalen Duschbrause, als auswechselbarer Einsatz eines solchen Duschkopfes, als Sprühkopf in einer Wellnessanlage usw. eingesetzt werden. Auch ist ein Einsatz z.B. im Campingbereich möglich, beispielsweise in einem Wohnmobil oder Caravan, oder an Waschtischen oder sogar Duschen in Flugzeugen. Die zu versprühende Flüssigkeit muss nicht notwendigerweise Wasser sein, sondern kann z.B. auch eine mit Detergenzien versehene Reinigungslösung sein. Letztlich kann die Erfindung in allen Anwendungen vorteilhaft eingesetzt werden, in denen eine gute Reinigungsleistung bei einem geringen Volumenstrom erwünscht ist.The device can be used in a variety of ways. Thus, the device may e.g. as a mouthpiece for a sanitary outlet fitting for cold or hot tap water, e.g. be formed on a washbasin or bidet. However, the device may e.g. also as a spray head of a shower toilet, as a normal shower head shower head, as a replaceable use of such a shower head, as a spray head in a spa, etc. are used. Also, use is e.g. in the camping area possible, for example in a motor home or caravan, or on vanities or even showers in aircraft. The liquid to be sprayed does not necessarily have to be water, but may e.g. also be a detergent solution provided with detergents. Finally, the invention can be used to advantage in all applications in which a good cleaning performance is desired at a low flow rate.
Bevorzugt weist die Vorrichtung mindestens drei Wirbelkammern mit zugeordneten Auslassdüsen auf, deren Flüssigkeitsstrahlen aufeinandertreffen. Dabei scheint eine sinnvolle Obergrenze für die Zahl der Wirbelkammern bei ca. zehn zu liegen. Die Wirbelkammern und Auslassdüsen sind bevorzugt ringförmig um eine zentrale Vorrichtungslängsachse herum angeordnet. Dabei sind die Auslassdüsen vorzugsweise gleichmässig entlang der Umfangsrichtung des Rings verteilt. Es können aber auch andere Anordnungen gewählt werden.Preferably, the device has at least three vortex chambers with associated outlet nozzles whose liquid jets meet. A reasonable upper limit for the number of vortex chambers seems to be around ten. The vortex chambers and outlet nozzles are preferably arranged annularly around a central device longitudinal axis. In this case, the outlet nozzles are preferably distributed uniformly along the circumferential direction of the ring. However, other arrangements can be selected.
Der axiale Abstand von den Auslassdüsen, an dem die Flüssigkeitsstrahlen aufeinandertreffen, beträgt bevorzugt zwischen 40 mm und 150 mm, kann aber je nach Anwendung auch noch grössere Werte annehmen. Zur Anwendung in sanitären Auslaufarmaturen ist ein Abstand von ca. 80 mm bevorzugt. Bei typischen Abmessungen von Mundstücken für sanitäre Auslaufarmaturen und einer ringförmigen Anordnung der Auslassdüsen entspricht dieser Abstand einem Neigungswinkel der Düsenlängsachsen relativ zur zentralen Vorrichtungslängsachse von ca. 3°. Dieser Neigungswinkel kann aber je nach den Dimensionen der Vorrichtung und der vorgesehenen Anwendung auch grösser oder kleiner sein und beträgt 1°-10°, bevorzugt ca. 2°-5°The axial distance from the outlet nozzles, at which the liquid jets meet, is preferably between 40 mm and 150 mm, but may also take on larger values depending on the application. For use in sanitary outlet fittings, a distance of about 80 mm is preferred. For typical dimensions of mouthpieces for sanitary outlet fittings and an annular arrangement of the outlet nozzles, this distance corresponds to an angle of inclination of the nozzle longitudinal axes relative to the central device longitudinal axis of about 3 °. Depending on the dimensions of the device and the intended application, however, this angle of inclination may also be greater or smaller and is 1 ° -10 °, preferably about 2 ° -5 °
Unter einer Wirbelkammer wird in diesem Dokument eine Kammer verstanden, die durch einen Einlass eintretendes Wasser aufgrund ihrer Geometrie in eine Wirbelbewegung um eine Wirbelachse versetzt (also einen Vortex um die Wirbelachse erzeugt), und die eine Auslassdüse derart aufweist, dass das Wasser im Wesentlichen axial zur Wirbelachse austritt. Die Wirbelkammer ist bevorzugt wie folgt ausgebildet. Die Wirbelkammer definiert eine Kammerlängsachse. Der Einlass der Wirbelkammer ist derart in einem Einlaufbereich der Wirbelkammer ausgebildet, dass die Zuführung der Flüssigkeit in die Wirbelkammer im Wesentlichen tangential bezüglich der Kammerlängsachse erfolgt. Die Auslassdüse ist dagegen im Wesentlichen zentral bezüglich der Kammerlängsachse angeordnet. Die Düsenlängsachse und die Kammerlängsachse verlaufen entweder koaxial oder schliessen einen Winkel von höchstens 15° zueinander ein, bevorzugt höchstens 10°, besonders bevorzugt höchstens 5°. In einer fertigungstechnisch besonders bevorzugten Ausführungsform verlaufen die Kammerlängsachsen der Wirbelkammern im wesentlichen parallel zueinander, und insbesondere parallel zu einer gemeinsamen Vorrichtungslängsachse, während die Düsenlängsachsen zu den Kammerlängsachsen bzw. der Vorrichtungslängsachse geneigt sind.In this document, a vortex chamber is understood to mean a chamber which, by virtue of its geometry, causes a vortex about a vortex axis due to its geometry (ie generates a vortex around the vortex axis) and which has an outlet nozzle such that the water is substantially axial exits to the vortex axis. The vortex chamber is preferably designed as follows. The vortex chamber defines a chamber longitudinal axis. The inlet of the vortex chamber is formed in an inlet region of the vortex chamber such that the supply of the liquid into the vortex chamber takes place essentially tangentially with respect to the chamber longitudinal axis. By contrast, the outlet nozzle is arranged essentially centrally with respect to the longitudinal axis of the chamber. The nozzle longitudinal axis and the chamber longitudinal axis extend either coaxially or include an angle of at most 15 ° to each other, preferably at most 10 °, more preferably at most 5 °. In a production-technically particularly preferred embodiment, the chamber longitudinal axes of the vortex chambers are substantially parallel to each other, and in particular parallel to a common longitudinal axis device, while the nozzle longitudinal axes are inclined to the longitudinal axis of the chamber or the device longitudinal axis.
Vorzugsweise ist die Auslassdüse bezüglich der Kammerlängsachse axial beabstandet vom Einlaufbereich angeordnet. Dabei verjüngt sich die Wirbelkammer vorzugsweise trichterartig zwischen dem Einlaufbereich und der Auslassdüse. Jede der Wirbelkammern weist dazu vorzugsweise einen im Wesentlichen konischen Bereich auf, in dem sich der Querschnitt der Wirbelkammer entlang der Kammerlängsachse kontinuierlich bis zur Auslassdüse verjüngt. Diesem konischen Bereich kann ein im Wesentlichen zylindrischer Bereich axial und stromaufwärts vorgelagert sein, der zwischen dem Einlaufbereich und dem konischen Bereich angeordnet ist. Dadurch tritt Flüssigkeit zunächst tangential in den Einlaufbereich ein, beschreibt eine spiralförmige Bewegung durch den zylindrischen Bereich hindurch und wird im konisch zulaufenden Bereich weiter beschleunigt, bevor der resultierende Vortex in die Auslassdüse eintritt. Dies führt beim Verlassen der Auslassdüse zu einer besonders effizienten Zerteilung des Flüssigkeitsstrahls. Als "im Wesentlichen zylindrisch" sind dabei auch Formen zu betrachten, die in geringem Mass von einer rein zylindrischen Form abweichen, ohne die Funktion dieses Bereichs wesentlich zu verändern, z.B. kegelstumpfförmige Formen mit kleinem Öffnungswinkel, insbesondere wenn der Öffnungswinkel (Winkel zwischen diametral gegenüberliegenden Mantelflächenbereichen) kleiner als 2 x 10° oder sogar kleiner als 2 x 5 ° ist.Preferably, the outlet nozzle is arranged axially spaced from the inlet region with respect to the longitudinal axis of the chamber. In this case, the vortex chamber preferably tapers in a funnel shape between the inlet region and the outlet nozzle. For this purpose, each of the vortex chambers preferably has a substantially conical region in which the cross section of the vortex chamber tapers continuously along the chamber longitudinal axis as far as the outlet nozzle. This conical area can be a substantially cylindrical Axial and upstream upstream region, which is arranged between the inlet region and the conical region. As a result, liquid initially enters the inlet region tangentially, describes a spiral movement through the cylindrical region, and is further accelerated in the conically tapered region before the resulting vortex enters the outlet nozzle. When leaving the outlet nozzle, this leads to a particularly efficient division of the liquid jet. As "substantially cylindrical" are also to consider shapes that differ to a small degree from a purely cylindrical shape, without significantly changing the function of this area, eg frusto-conical shapes with a small opening angle, especially when the opening angle (angle between diametrically opposite lateral surface areas ) is less than 2 x 10 ° or even less than 2 x 5 °.
Um die Vortexbildung zu verbessern, kann in jeder der Wirbelkammern ein Nocken angeordnet sein, der sich zentral entlang der Kammerlängsachse in den Einlaufbereich der Wirbelkammer hinein erstreckt, so dass der Einlaufbereich der Wirbelkammer einen ringförmigen Hohlraum bildet. Der Nocken ist dabei vorzugsweise von zylindrischer Form, kann aber z.B. auch eine Kegelstumpfform annehmen.In order to improve the Vortexbildung, in each of the vortex chambers, a cam may be arranged, which extends centrally along the chamber longitudinal axis in the inlet region of the vortex chamber, so that the inlet region of the vortex chamber forms an annular cavity. The cam is preferably cylindrical in shape, but may e.g. also assume a truncated cone shape.
Die Auslassdüsen sind bevorzugt durch zylindrische Bohrungen gebildet. Selbst wenn die Auslassdüsen jedoch eine andere Form haben sollten, weist vorzugsweise jede Auslassdüse an ihrem Ende einen zylindrischen Austrittsbereich auf, an den sich nach aussen hin eine im Wesentlichen ebene Austrittsfläche anschliesst, die orthogonal zur Zylinderachse verläuft. Insbesondere weitet sich die Auslassdüse an ihrem aussenseitigen Ende vorzugsweise nicht nach aussen hin auf. Zwischen dem Austrittsbereich und der zugeordneten Austrittsfläche ist bevorzugt eine scharfe Kante ausgebildet, um das Ablösen des Flüssigkeitsstrahls von der Auslassdüse zu erleichtern. Insgesamt resultiert so ein sauberes Strahlbild.The outlet nozzles are preferably formed by cylindrical bores. However, even if the outlet nozzles should have a different shape, preferably each outlet nozzle has at its end a cylindrical outlet region, which is adjoined externally by a substantially flat outlet surface which is orthogonal to the cylinder axis. In particular, the outlet nozzle preferably does not expand outwardly at its exterior end. Between the exit region and the associated exit surface, a sharp edge is preferably formed in order to facilitate the detachment of the liquid jet from the outlet nozzle. Overall, this results in a clean spray pattern.
Die Wirbelkammern sind zumindest teilweise, zumindest aber die Auslassdüsen, sind in einem gemeinsamen (bevorzugt einstückigen) Wirbelkammerelement ausgebildet. Es ist fertigungstechnisch bevorzugt, wenn im Wirbelkammerelement aussenseitig im Bereich jeder Auslassdüse eine flache, vorzugsweise kegelstumpfförmige Vertiefung ausgebildet ist, deren Kegelachse mit der Düsenachse zusammenfällt und die die Austrittsfläche bildet.The vortex chambers are at least partially, but at least the outlet nozzles are formed in a common (preferably one-piece) vortex chamber element. It is preferred in terms of production engineering if, in the swirl chamber element, a flat, preferably frusto-conical recess is formed on the outside in the region of each outlet nozzle, whose conical axis coincides with the nozzle axis and which Exit surface forms.
Zur Zufuhr der Flüssigkeit weist die Vorrichtung einen entlang einer Vorrichtungsachse verlaufenden, zentralen Zuführungskanal für die Flüssigkeit auf, der sich optional in axialer Richtung verjüngen kann, um eine erste Beschleunigung des eintretenden Flüssigkeitsstroms zu erreichen. Die Wirbelkammern sind dann dezentral zur Vorrichtungsachse angeordnet, z.B. ringförmig um die Vorrichtungsachse, und die Einlaufkanäle verbinden den Zuführungskanal im Wesentlichen quer zur Vorrichtungsachse mit den Wirbelkammern. Eine verbesserte Vortexbildung kann erreicht werden, wenn jeder der Einlaufkanäle vom Zuführungskanal ausgehend einen Bogen mit einem Winkel von mindestens 90° beschreibt. Es ist aber auch möglich, Einlaufkanäle einer anderen Form vorzusehen, z.B. gerade oder fächerförmige Einlaufkanäle, wie sie nachfolgend noch näher beschrieben werden. Um ein sauberes Strahlbild zu erreichen, ist es bevorzugt, wenn jeder der Einlaufkanäle einen rechteckigen Querschnitt aufweist. Dabei ist es bevorzugt, wenn der Querschnitt über die Länge des Einlaufkanals hinweg im Wesentlichen konstant ist.To supply the liquid, the apparatus has a liquid central supply channel extending along a device axis, which can optionally taper in the axial direction to achieve a first acceleration of the incoming liquid stream. The vortex chambers are then arranged decentralized to the device axis, e.g. annular around the device axis, and the inlet channels connect the feed channel to the vortex chambers substantially transverse to the device axis. An improved vortex formation can be achieved if each of the inlet channels from the feed channel describes an arc with an angle of at least 90 °. However, it is also possible to provide inlet channels of a different shape, e.g. straight or fan-shaped inlet channels, as described in more detail below. In order to achieve a clean spray pattern, it is preferred if each of the inlet channels has a rectangular cross-section. It is preferred if the cross section is substantially constant over the length of the inlet channel.
Dabei ist zu beachten, dass die Querschnittsfläche der Einlaufkanäle einen wesentlichen Einfluss auf den Volumenstrom bei einem gegebenen Betriebsdruck hat. Durch geeignete Wahl der Querschnittsfläche des Einlaufkanäle kann somit bei gegebenem Betriebsdruck der Volumenstrom eingestellt werden. Dadurch kann die Verwendung eines separaten Durchflussbegrenzers entfallen.It should be noted that the cross-sectional area of the inlet channels has a significant influence on the volume flow at a given operating pressure. By suitable choice of the cross-sectional area of the inlet channels, the volume flow can thus be adjusted for a given operating pressure. This eliminates the use of a separate flow restrictor.
Die Vorrichtung wird besonders einfach gefertigt, weil sie ein (vorzugsweise einstückiges) Zuführungselement sowie ein (vorzugsweise ebenfalls einstückiges) Wirbelkammerelement aufweist, die derart miteinander verbunden sind (insbesondere aufeinander aufliegen), dass sie gemeinsam zumindest einen Bereich jedes Einlaufkanals begrenzen, wobei die Wirbelkammern zumindest teilweise durch Vertiefungen (z.B. Bohrungen) im Wirbelkammerelement gebildet sind. Dabei ist es bevorzugt, dass das Wirbelkammerelement und das Zuführungselement bezüglich der Vorrichtungslängsachse stirnseitig aufeinander aufliegen, d.h. im Wesentlichen entlang einer gemeinsamen Ebene, die senkrecht zur Vorrichtungslängsachse verläuft, aufeinander aufliegen. Insbesondere ist es bevorzugt, wenn die Einlaufkanäle durch Vertiefungen (z.B. Nuten) im Zuführungselement gebildet sind, während das Wirbelkammerelement eine zum Zuführungselement weisende Stirnfläche aufweist, die im Bereich der Einlaufkanäle im Wesentlichen eben ist, um so gemeinsam mit dem Zuführungselement die Einlaufkanäle zu begrenzen. In dieser Ausführungsform kann die Vorrichtung insbesondere auch sehr einfach an verschiedene Druckbereiche angepasst werden, indem lediglich das Zuführungselement gegen ein anderes Zuführungselement mit einer anderen Querschnittsfläche der Einlaufkanäle ausgetauscht wird, während das Wirbelkammerelement unabhängig vom Druckbereich unverändert bleiben kann.The device is manufactured particularly simply because it has a (preferably one-piece) supply element and a (preferably also one-piece) swirl chamber element which are interconnected (in particular rest on one another) so that together they delimit at least a portion of each inlet channel, the vortex chambers at least partially formed by depressions (eg holes) in the vortex chamber element. It is preferred that the vortex chamber element and the feed element with respect to the longitudinal axis of the device rest on the front side, ie substantially along a common plane which is perpendicular to the device longitudinal axis, rest on each other. In particular, it is preferred if the inlet channels through depressions (eg grooves) in Feed element are formed, while the swirl chamber element has a supply element facing end face, which is substantially flat in the region of the inlet channels, so as to limit the inlet channels together with the feed element. In particular, in this embodiment, the device can also be adapted very easily to different pressure ranges by merely exchanging the feed element for another feed element with a different cross-sectional area of the inlet channels, while the vortex chamber element can remain unchanged independently of the pressure range.
Um das Zuführungselement und das Wirbelkammerelement relativ zueinander korrekt zu positionieren und gegenseitig gegen Verdrehen zu sichern, kann am Zuführungselement oder Wirbelkammerelement mindestens ein dezentraler Positioniernocken ausgebildet sein, der in eine komplementäre Positioniernut am anderen Element eingreift. Eine solche Positionierung kann jedoch auch auf andere Weise erreicht werden, z.B. durch das Vorsehen von seitlich durchbrochenen Hohlzapfen, die am Zuführungselement ausgebildet sind und in einem den Einlaufbereich der Wirbelkammern umgebenden Bereich in Vertiefungen des Wirbelkammerelements hineinragen.In order to correctly position the feed element and the swirl chamber element relative to each other and to secure each other against rotation, at least one decentralized positioning cam can be formed on the feed element or swirl chamber element, which engages in a complementary positioning groove on the other element. However, such positioning can also be achieved in other ways, e.g. by the provision of laterally perforated hollow pins, which are formed on the feed element and protrude in a region surrounding the inlet region of the vortex chambers in depressions of the vortex chamber element.
Das Zuführungselement und das Wirbelkammerelement können gemeinsam derart in einer Aufnahmehülse gehalten sein, dass das Zuführungselement, das Wirbelkammerelement und die Aufnahmehülse gemeinsam eine austauschbare Einheit ("Service-Einheit") bilden. Dazu kann das Wirbelkammerelement an einem innenseitigen axialen Anschlag der Aufnahmehülse anliegen (ggfs. mit einer dazwischen angeordneten Dichtung), während das Zuführungselement auf dem Wirbelkammerelement aufliegt und an der Aufnahmehülse gehalten ist, z.B. durch eine Schnappverbindung. Zu diesem Zweck können am Zuführungselement ein oder mehrere Schnapparme ausgebildet sein, die in entsprechende innenseitige Vertiefungen der Aufnahmehülse eingreifen.The feed element and the swirl chamber element can be jointly held in a receiving sleeve such that the feed element, the swirl chamber element and the receiving sleeve together form a replaceable unit ("service unit"). For this purpose, the swirl chamber element abut against an inside axial stop of the receiving sleeve (if necessary, with a gasket disposed therebetween), while the feed element rests on the swirl chamber element and is held on the receiving sleeve, e.g. through a snap connection. For this purpose, one or more snap arms can be formed on the feed element, which engage in corresponding inner recesses of the receiving sleeve.
Bevorzugte Ausführungsformen der Erfindung werden im Folgenden anhand der Zeichnungen beschrieben, die lediglich zur Erläuterung dienen und nicht einschränkend auszulegen sind. In den Zeichnungen zeigen:
- Fig. 1
- ein Mundstück gemäss einer ersten Ausführungsform der Erfindung in einem zentralen Längsschnitt;
- Fig. 2
- das Mundstück der
Fig. 1 in einem Querschnitt in der Ebene A—A derFig. 1 ; - Fig. 3
- den Gehäuseeinsatz des Mundstücks der
Fig. 1 in einer Ansicht von unten; - Fig. 4
- eine Detaildarstellung des Gehäuseeinsatzes der
Fig. 3 in einem Längsschnitt in der Ebene B—B derFig. 3 ; - Fig. 5
- eine Detaildarstellung des Gehäuseeinsatzes der
Fig. 3 in einem Längsschnitt in der Ebene C—C derFig. 3 ; - Fig. 6
- einen zentralen Längsschnitt des Gehäuseeinsatzes der
Fig. 3 in der Ebene D—D derFig. 3 ; - Fig. 7
- ein Mundstück gemäss einer zweiten Ausführungsform der Erfindung in einem zentralen Längsschnitt;
- Fig. 8
- den Gehäuseeinsatz des Mundstücks der
Fig. 7 in einer perspektivischen Ansicht; - Fig. 9
- ein Mundstück gemäss einer dritten Ausführungsform der Erfindung in einem zentralen Längsschnitt;
- Fig. 10
- das Mundstück der
Fig. 9 in einem Querschnitt in der Ebene E—E derFig. 9 ; - Fig. 11
- ein Mundstück gemäss einer vierten Ausführungsform der Erfindung in einem zentralen Längsschnitt;
- Fig. 12
- eine Detaildarstellung eines Mundstücks gemäss einer fünften Ausführungsform der Erfindung in einem Längsschnitt in der Ebene F—F der
Fig. 2 ; - Fig. 13
- eine Wirbelscheibe für ein Mundstück gemäss einer sechsten Ausführungsform der Erfindung in perspektivischer Ansicht;
- Fig. 14
- die Wirbelscheibe der
Fig. 13 in einem zentralen Längsschnitt in der Ebene G—G derFig. 15 ; und - Fig. 15
- die Wirbelscheibe der
Fig. 13 im Querschnitt in der Ebene H—H derFig. 14 .
- Fig. 1
- a mouthpiece according to a first embodiment of the invention in a central longitudinal section;
- Fig. 2
- the mouthpiece of the
Fig. 1 in a cross-section in the plane A-A ofFig. 1 ; - Fig. 3
- the housing insert of the mouthpiece of
Fig. 1 in a view from below; - Fig. 4
- a detailed view of the housing insert the
Fig. 3 in a longitudinal section in the plane B-B ofFig. 3 ; - Fig. 5
- a detailed view of the housing insert the
Fig. 3 in a longitudinal section in the plane C-C ofFig. 3 ; - Fig. 6
- a central longitudinal section of the housing insert the
Fig. 3 in the level D-D of theFig. 3 ; - Fig. 7
- a mouthpiece according to a second embodiment of the invention in a central longitudinal section;
- Fig. 8
- the housing insert of the mouthpiece of
Fig. 7 in a perspective view; - Fig. 9
- a mouthpiece according to a third embodiment of the invention in a central longitudinal section;
- Fig. 10
- the mouthpiece of the
Fig. 9 in a cross section in the plane E-E ofFig. 9 ; - Fig. 11
- a mouthpiece according to a fourth embodiment of the invention in a central longitudinal section;
- Fig. 12
- a detailed view of a mouthpiece according to a fifth embodiment of the invention in a longitudinal section in the plane F-F of
Fig. 2 ; - Fig. 13
- a vertebral disc for a mouthpiece according to a sixth embodiment of the invention in a perspective view;
- Fig. 14
- the vertebral disc of
Fig. 13 in a central longitudinal section in the plane G-G ofFig. 15 ; and - Fig. 15
- the vertebral disc of
Fig. 13 in cross-section in the plane H-H ofFig. 14 ,
In den
Im Gehäuseeinsatz 5 ist eine zentrale Bohrung 10 ausgebildet, die sich stufenweise nach unten hin zu einem zylindrischen Zuführungskanal 11 verjüngt. Die Bohrung 10 definiert mit ihrer Zylinderachse eine zentrale Vorrichtungslängsachse 21.In the
Vom Zuführungskanal 11 aus erstrecken sich drei Einlaufkanäle 13 quer zur Vorrichtungslängsachse 21 zu drei dezentralen, ringförmig um die Vorrichtungslängsachse herum angeordneten Wirbelkammern 14. Jeder der Einlaufkanäle 13 verläuft dabei zunächst in einem radialen Abschnitt 12 im Wesentlichen radial nach aussen und beschreibt dann einen Bogen von etwas mehr als 180°, bevor er tangential in die jeweilige Wirbelkammer 14 mündet. Die Einlaufkanäle sind dabei als Vertiefungen mit rechteckigem Querschnitt in derjenigen Stirnseite des Gehäuseeinsatzes 5 ausgebildet, die der Wirbelscheibe 6 gegenüberliegt. Die gegenüberliegende Stirnseite der Wirbelscheibe 6 ist im Bereich der Einlaufkanäle 13 dagegen eben und glatt ausgebildet. Auf diese Weise begrenzen der Gehäuseeinsatz 5 und die Wirbelscheibe 6 gemeinsam die Einlaufkanäle 13. Jede der Wirbelkammern 14 weist einen Einlaufbereich 29 auf, in den hinein der zugehörige Einlaufkanal 13 im Wesentlichen tangential mündet. Der Einlaufbereich 29 ist dabei im Gehäuseeinsatz 5 als ringförmiger Hohlraum mit rechteckigem Querschnitt ausgebildet. Im Zentrum des Einlaufbereichs 29 ist ein zylindrischer Zapfen 27 angeordnet, der am Gehäuseeinsatz 5 ausgebildet ist und sich von oben her in den Einlaufbereich hinein erstreckt. Die Länge des Zapfens entspricht dabei im Wesentlichen der Höhe der Einlaufkanäle, so dass der Zapfen axial in der gemeinsamen Ebene, die den Gehäuseeinsatz 5 und die Wirbelscheibe 6 trennt, endet. An den Einlaufbereich 29 schliesst sich axial ein zylindrischer Bereich 15 (Übergangsbereich) in Form einer zylindrischen Bohrung in der Wirbelscheibe 6 an, der wiederum von einem konisch zulaufenden Bereich 16 gefolgt ist. Der konisch zulaufende Bereich 16 mündet in eine zentral angeordnete, axial verlaufende, zylindrische Auslassdüse 18. Die Auslassdüse 18 endet an einer rechtwinklig zur Zylinderachse der Düse verlaufenden Austrittsfläche 17, wobei zwischen der zylindrischen Düsenbohrung und der Austrittsfläche eine scharfe Kante ausgebildet ist. Die Austrittsfläche wird durch eine flache, kegelstumpfförmige Vertiefung 19 in der aussenseitigen Stirnfläche der Wirbelscheibe 6 gebildet und weist dadurch eine Ringform auf.From the
Die Zylinderachse jeder Wirbelkammer 14 definiert eine Kammerlängsachse 32. Ebenso definiert die Zylinderachse der zugehörigen Auslassdüse 18 eine Düsenlängsachse 20. Im vorliegenden Beispiel fallen die Kammerlängsachse 32 und die Düsenlängsachse 20 zusammen und sind gemeinsam um ca. 3° zur Vorrichtungslängsachse 21 hin geneigt. Dadurch treffen sich die Düsenlängsachsen 20 in einem gemeinsamen Schnittpunkt in einem Abstand von ca. 80 mm von den Austrittsflächen der Düsen. Die Kammerlängsachse und die Düsenlängsachse können jedoch alternativ auch einen kleinen Winkel zueinander einnehmen. Dies wird nachfolgend noch im Zusammenhang mit der
Am Gehäuseeinsatz 5 sind entlang seines äusseren Umfangs drei axial in Richtung der Wirbelscheibe 6 vorstehende Nocken 22 ausgebildet, die in dazu komplementäre Nuten auf der Aussenseite der Wirbelscheibe 6 eingreifen, um die Wirbelscheibe 6 und den Gehäuseeinsatz 5 zueinander richtig zu positionieren und gegen Verdrehen zu sichern. Der Gehäuseeinsatz 5 und die Wirbelscheibe 6 sind gemeinsam in der Innenhülse 4 gehalten. Dazu ist an der Wirbelscheibe 6 eine nach innen versetzte, in Auslassrichtung weisende Stufe ausgebildet, die auf der Dichtung 9 aufliegt; diese Dichtung liegt wiederum auf einem nach innen weisenden Ringflansch am auslassseitigen Ende der Innenhülse 4 auf. Auf die Wirbelscheibe 6 ist der Gehäuseeinsatz 5 aufgeschoben. Dieser ist über nachfolgend noch näher beschriebene Schnapparme 23, die in eine entsprechende Ausnehmung auf der Innenseite der Innenhülse 4 eingreifen, an der Innenhülse 4 fixiert. Dadurch bilden die Innenhülse 4, der Gehäuseeinsatz 5 und die Wirbelscheibe 6 zusammen mit der Dichtung 9 und dem Partikelfilter 7 eine Service-Einheit 30, die leicht ausgewechselt werden kann.On the
Im Betrieb tritt Wasser axial durch den Partikelfilter 7 (dessen Maschenweite geringer ist als die kleinste Querschnittsdimension der Einlaufkanäle 13 und der Auslassdüsen 18) hindurch in die zentrale Bohrung 10 und von dort in den Zuführungskanal 11 ein. Aufgrund der sich verjüngenden Form der zentralen Bohrung 10 wird der Wasserstrom dabei ein erstes Mal beschleunigt. Im Zuführungskanal 11 wird das Wasser auf die Einlaufkanäle 13 verteilt und dabei umgelenkt. Durch die Einlaufkanäle 13 wird das Wasser zu den Wirbelkammern 14 geführt. Das Wasser tritt tangential in den Einlaufbereich 29 jeder Wirbelkammer 14 ein und beginnt dort eine spiralförmige Bewegung zu beschreiben. Der zentrale Nocken 27 im Einlaufbereich unterstützt dabei die Ausbildung einer Wirbelbewegung zusätzlich. Der entstehende Vortex bewegt sich nun entlang des zylindrischen Bereichs 15 nach unten und wird im konisch zulaufenden Bereich 16 weiter beschleunigt, bevor er in die Auslassdüse 18 eintritt. Das Wasser verlässt die Auslassdüse 18 mit hoher Geschwindigkeit und wird dabei in feine Tröpfchen zerteilt. Dabei unterstützt die scharfkantige Ausbildung des Übergangs zwischen der zylindrischen Düsenbohrung und der Austrittsfläche 17 ein sauberes Ablösen des Wasserstrahls. Auf diese Weise entsteht ein feinzerteilter, gerichteter Strahl ohne übermässige Ausbildung von ungerichtetem Sprühnebel. Diese schon zuvor zerteilten Wasserstrahlen treffen ca. 80 mm unterhalb der Austrittsfläche im Schnittpunkt der Düsenlängsachsen aufeinander und sorgen in diesem Bereich für eine optimale Reinigungsleistung. So lassen sich z.B. die Hände zum Waschen vollständig benetzen, und auch Seife oder andere Reinigungsmittel lassen sich ohne weiteres wieder von den Händen abspülen.In operation, water passes axially through the particulate filter 7 (whose mesh is less than the smallest cross-sectional dimension of the
Bei einem Mundstück für haushaltsübliche Verwendung an Waschtischen können die Abmessungen des Mundstücks z.B. wie folgt gewählt werden: Aussendurchmesser des Mundstücks ca. 24 mm; Abstand der Düsenauslässe von der zentralen Vorrichtungslängsachse ca. 4.2 mm; Neigungswinkel der Düsenlängsachse und der Kammerlängsachse zur Vorrichtungslängsachse ca. 3°; Querschnitt der Einlaufkanäle rechteckig, ca. 1 mm breit, 0.5 mm tief; resultierender Volumenstrom bei einem Fliessdruck von 3 bar ist ca. 0.2 l/min je Auslassdüse (gesamter Volumenstrom ca. 0.6 l/min). Selbstverständlich können diese Parameter aber in weiten Bereichen variiert werden. Insbesondere lässt sich durch geeignete Wahl der Querschnittsfläche der Einlaufkanäle ein grösserer oder kleinerer Volumenstrom bei vorgegebenem Fliessdruck einstellen, bzw. das Mundstück lässt sich an unterschiedliche Druckverhältnisse bei vorgegebenem Volumenstrom anpassen.For a mouthpiece for household use on vanities, the dimensions of the mouthpiece, e.g. as follows: Outer diameter of the mouthpiece approx. 24 mm; Distance of the nozzle outlets from the central longitudinal axis of the device approx. 4.2 mm; Inclination angle of the nozzle longitudinal axis and the chamber longitudinal axis to the device longitudinal axis about 3 °; Cross section of the inlet channels rectangular, approx. 1 mm wide, 0.5 mm deep; resulting volume flow at a flow pressure of 3 bar is approx. 0.2 l / min per outlet nozzle (total volume flow approx. 0.6 l / min). Of course, these parameters can be varied within wide ranges. In particular, can be adjusted by a suitable choice of the cross-sectional area of the inlet channels, a larger or smaller volume flow at a given flow pressure, or the mouthpiece can be adapted to different pressure conditions at a given volume flow.
Ein Mundstück gemäss einer zweiten Ausführungsform der Erfindung ist in den
Diese Ausführungsform unterscheidet sich von der ersten Ausführungsform vor allem durch die Art und Weise, in der der Gehäuseeinsatz 5 und die Wirbelscheibe 6 relativ zueinander gegen Verdrehung gesichert werden. Als Positionierhilfen dienen hier Hohlzapfen 25 am Gehäuseeinsatz 5, die über die Stirnfläche des Gehäuseeinsatzes 5 axial vorstehen und die Einlaufbereiche der Wirbelkammern umgeben. Diese Hohlzapfen ragen in kurze Sackbohrungen 26 hinein, die in der Wirbelscheibe 6 ausgebildet sind. Um die tangentiale Einspeisung des Wassers in die Wirbelkammer zu ermöglichen, ist jeder Hohlzapfen 25 durch einen Durchbruch 31 unterbrochen. In dieser Ausführungsform entfällt ausserdem der zentrale Zapfen 27, der in der ersten Ausführungsform axial in den Einlaufbereich 29 der Wirbelkammer 14 hineinragt.This embodiment differs from the first embodiment mainly by the manner in which the
Ein Mundstück gemäss einer dritten Ausführungsform ist in den
Ein Mundstück gemäss einer vierten Ausführungsform ist in der
Ein Mundstück gemäss einer fünften Ausführungsform der Erfindung ist in der
In den
So weist die Wirbelscheibe der
Weitere Unterschiede bestehen auf der Auslassseite der Wirbelscheibe. Während die Wirbelscheibe in den vorstehenden Ausführungsbeispielen auf der Auslassseite weitgehend massiv gefertigt ist, weist die Wirbelscheibe dieser Ausführungsform mehrere Vertiefungen auf, insbesondere ein zentrales Sackloch 33 und drei Vertiefungen 34 zwischen den Austrittsflächen 17. In Umfangsrichtung grenzen die Vertiefungen 34 direkt an die Austrittsflächen 17 an, so dass die Austrittsflächen 17 selbst, anders als in den vorstehenden Beispielen, nicht mehr durch kegelstumpfförmige Vertiefungen im umliegenden Material gebildet sind. Das umliegende Material bildet vielmehr nun nur noch einen inneren Ring 35 und einen äusseren Ring 36, die die Austrittsflächen in radialer Richtung begrenzen. Diese Ausgestaltung mit Sackloch 33 und Vertiefungen 34 ist aus fertigungstechnischen Gründen bevorzugt, da auf diese Weise die Materialdicke nirgends übermässig gross wird, so dass die Wirbelscheibe bei einer Fertigung im Spritzgussverfahren gleichmässiger abkühlt und aushärtet.Further differences exist on the outlet side of the vortex disc. While the vortex disc in the above embodiments is made substantially solid on the outlet side, the vortex disc of this embodiment has a plurality of depressions, in particular a central
Schliesslich weist die Wirbelscheibe dieses Ausführungsbeispiels an ihrem äusseren Umfang auch noch drei Positioniernocken 37 auf, die es ermöglichen, die Wirbelscheibe 6 unabhängig vom Gehäuseeinsatz 5 in einer festen Orientierung in der Innenhülse 4 zu halten, indem in der Innenhülse entsprechende Führungsnuten vorgesehen sind. Wenn auch der Gehäuseeinsatz mit entsprechenden Nocken versehen ist, kann ein gegenseitiges Eingreifen der Wirbelscheibe und des Gehäuseeinsatzes entfallen.Finally, the vortex disc of this embodiment also has three
Aus der vorstehenden Beschreibung ist erkennbar, dass eine grosse Zahl von Abwandlungen möglich ist, ohne den Bereich der Erfindung zu verlassen. So ist es insbesondere möglich, die Vorrichtung nicht nur als Mundstück einer Auslaufarmatur auszubilden, sondern z.B. auch als Duschkopf oder als Einsatz für einen Duschkopf. Je nach Anwendungsbereich und Abmessungen ist es möglich, mehr oder weniger als drei Wirbelkammern um die zentrale Vorrichtungslängsachse herum anzuordnen. Bei einer grösseren Zahl von Wirbelkammern kann es vorteilhaft sein, dass unterschiedliche Auslassdüsen eine unterschiedliche Neigung zur Vorrichtungslängsachse aufweisen, um die austretenden Strahlen auf einen grösseren Bereich zu verteilen. Dies kann z.B. bei Duschköpfen erwünscht sein. Die Einlaufkanäle können auch in anderer Weise als oben dargestellt ausgebildet sein und z.B. als gerade verlaufende Kanäle mit konstantem oder veränderlichem Querschnitt ausgebildet sein.
Claims (20)
- Device for spraying a pressurized liquid, comprising:a central feed channel (11) for the liquid, the central feed channel extending along a device axis (21),a plurality of swirl chambers (14) arranged in a decentralized manner in relation to the device axis (21), wherein each of the swirl chambers has at least one inlet for feeding the liquid into the respective swirl chamber and an outlet nozzle (18) in order for a liquid jet to exit from the swirl chamber; andan arrangement of inflow channels (13), which connect the feed channel (11) to the swirl chambers (14) essentially transversely with respect to the device axis (21) in order to distribute a liquid flow entering into the device between the inlets of the swirl chambers (14); wherein each of the outlet nozzles (18) defines a longitudinal nozzle axis (20) extending at an angle of 1°-10° to the device axis, and wherein the longitudinal nozzle axes (20) are inclined in relation to one another such that liquid jets exiting from the outlet nozzles meet one another at a predetermined distance from the outlet nozzles (18),characterised in thatthe device comprises a feed element (5) in which the feed channel (11) is formed,the device comprises a swirl-chamber element (6), wherein the swirl chambers (14) are formed, at least in part, by depressions in the swirl-chamber element (6),and the feed element (5) and the swirl-chamber element (6) are connected to one another such that together they define at least one region of each inflow channel (13).
- Device as claimed in claim 1, wherein the feed element (5) rests on the swirl-chamber element (6).
- Device as claimed in claim 1 or 2, which further comprises an accommodating sleeve (4), the feed element (5) and the swirl-chamber element (6) being retained together in the accommodating sleeve (4) such that the feed element (5), the swirl-chamber element (6) and the accommodating sleeve (4) together form an exchangeable unit.
- Device as claimed in claim 3, wherein the swirl-chamber element (6) abuts against an inner axial stop of the accommodating sleeve (4), directly or via a seal.
- Device as claimed in claim 4, wherein the feed element (5) rests on the swirl-chamber element (6) and is retained on the accommodating sleeve (4).
- Device as claimed in claim 5, wherein a snap-fit connection is formed between the feed element (5) and the accommodating sleeve (4).
- Device as claimed in any one of the preceding claims, wherein the device is designed as a mouthpiece of a sanitary outflow fitting.
- Device as claimed in any one of the preceding claims, wherein each of the inflow channels (13), starting from the feed channel, initially extends essentially radially outwards.
- Device as claimed in any one of the preceding claims, wherein each of the inflow channels (13), starting from the feed channel (11), describes an arc with an angle of at least 90°.
- Device as claimed in claim 9, wherein the arc describes an angle of at least 180°.
- Device as claimed in any one of the preceding claims, wherein the device comprises at least three swirl chambers (14), the longitudinal nozzle axes of which are inclined in relation to one another.
- Device as claimed in claim 11, wherein the swirl chambers (14) are arranged in a ring around the central device axis (21).
- Device as claimed in any one of the preceding claims,
wherein each of the swirl chambers (14) defines a longitudinal chamber axis (32), wherein the inlet of each of the swirl chambers (14) is formed in an inflow region (29) of the swirl chamber (14) such that the liquid is fed into the respective swirl chamber essentially tangentially in relation to the longitudinal chamber axis (32),
wherein the outlet nozzle (18) is arranged essentially centrally in relation to the longitudinal chamber axis (32), and
wherein the longitudinal nozzle axis (20) and the longitudinal chamber axis (32) assume an angle of 0° to 15° in relation to one another. - Device as claimed in claim 13, wherein the longitudinal chamber axes (32) of the swirl chambers extend essentially in parallel with one another whereas the longitudinal nozzle axes (20) are inclined in relation to the longitudinal chamber axes (32).
- Device as claimed in claim 13 or 14, wherein each of the swirl chambers has an essentially conical region (16) in which the cross section of the swirl chamber tapers continuously along the longitudinal chamber axis (32) to the outlet nozzle (18).
- Device as claimed in claim 15, wherein each swirl chamber has an essentially cylindrical region (15) which is arranged between the inflow region (29) and the conical region (16).
- Device as claimed in any one of claims 13-16, wherein a protuberance (27) is arranged in each of the swirl chambers (14) and extends centrally into the inflow region (29) of the swirl chamber (14) such that the inflow region (29) of the swirl chamber forms an annular cavity.
- Device as claimed in any one of the preceding claims, wherein each of the inflow channels (13) has a rectangular cross section.
- Device as claimed in any one of the preceding claims, wherein the inflow channels (13) are formed by depressions in the feed element (5) whereas the swirl-chamber element (6) has an end surface which is oriented towards the feed element (5) and is essentially planar in the region of the inflow channels (13).
- Device as claimed in any one of the preceding claims, wherein at least one decentralized positioning protuberance (22) is formed on the feed element (5) or swirl-chamber element (6) and engages in a complementary positioning groove on the other element in order to position the feed element (5) and the swirl-chamber element (6) relative to one another.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CH18042010 | 2010-10-28 | ||
PCT/CH2011/000226 WO2012055051A1 (en) | 2010-10-28 | 2011-09-23 | Device for spraying a liquid under pressure |
Publications (2)
Publication Number | Publication Date |
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EP2632603A1 EP2632603A1 (en) | 2013-09-04 |
EP2632603B1 true EP2632603B1 (en) | 2015-07-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11764459.1A Active EP2632603B1 (en) | 2010-10-28 | 2011-09-23 | Device for spraying a liquid under pressure |
Country Status (5)
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US (1) | US8967498B2 (en) |
EP (1) | EP2632603B1 (en) |
CN (1) | CN103249492B (en) |
TW (1) | TWI520784B (en) |
WO (1) | WO2012055051A1 (en) |
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DE202013002283U1 (en) * | 2013-03-11 | 2014-06-12 | Neoperl Gmbh | Sprayer nozzle for a sanitary water spout and sanitary outlet fitting with a water outlet |
CN104043544B (en) * | 2013-03-11 | 2018-09-28 | 纽珀有限公司 | Atomizer for sanitary outlet part and the sanitary faucet with water outlet piece |
DE102014107878A1 (en) * | 2014-06-04 | 2015-12-17 | Khs Gmbh | Treatment head and container treatment machine with a treatment head |
CN105772250B (en) * | 2016-03-28 | 2018-06-29 | 厦门松霖科技股份有限公司 | A kind of discharging device and shower for generating fan-shaped shake particle water |
DE202016005646U1 (en) * | 2016-09-15 | 2017-12-18 | Neoperl Gmbh | Sanitary outlet device |
USD842980S1 (en) * | 2017-05-24 | 2019-03-12 | Hamworthy Combustion Engineering Limited | Atomizer |
WO2019031973A1 (en) * | 2017-08-11 | 2019-02-14 | Methven Limited | Improvements in, or relating to, spray heads |
CN107319721B (en) * | 2017-09-04 | 2023-08-15 | 杭州迅秀丽智能科技有限公司 | Nursing hairdressing robot belt cleaning device |
US10710104B2 (en) * | 2017-10-20 | 2020-07-14 | Eemax, Inc. | Liquid flow device |
FR3079723B1 (en) * | 2018-04-09 | 2021-12-10 | Oreal | HAIR TREATMENT METHOD AND SYSTEM |
DE202019101312U1 (en) | 2019-03-08 | 2020-06-09 | Neoperl Gmbh | Aerator |
CN112570155A (en) * | 2019-09-27 | 2021-03-30 | 厦门松霖科技股份有限公司 | Water outlet structure, shower head and kitchen shower head for fine type soft atomized particle water |
EP3795259A1 (en) * | 2019-09-20 | 2021-03-24 | Xiamen Solex High-Tech Industries Co., Ltd. | Water outlet structure for fine-gentle atomized particle water, shower and kitchen shower |
CN112871487A (en) * | 2021-01-20 | 2021-06-01 | 厦门水魔师卫浴科技有限公司 | Multifunctional water outlet switching device with mounting platform |
CN113058783B (en) * | 2021-03-17 | 2022-05-13 | 马鞍山远荣机器人智能装备有限公司 | Automobile spraying device convenient for cleaning spray head |
AT525497B1 (en) * | 2021-09-27 | 2023-06-15 | Sasa Ing Janosevic | Device for spraying and distributing liquid |
CN114042550B (en) * | 2021-10-19 | 2022-07-05 | 厦门欧圣斯卫浴有限公司 | Water outlet device's water flower form adjusts structure |
DE102022101750A1 (en) * | 2022-01-26 | 2023-07-27 | Aero Pump Gmbh | Multi jet hollow cone nozzle |
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-
2011
- 2011-09-23 CN CN201180052391.6A patent/CN103249492B/en active Active
- 2011-09-23 US US13/882,302 patent/US8967498B2/en active Active
- 2011-09-23 EP EP11764459.1A patent/EP2632603B1/en active Active
- 2011-09-23 WO PCT/CH2011/000226 patent/WO2012055051A1/en active Application Filing
- 2011-10-27 TW TW100139069A patent/TWI520784B/en active
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US8967498B2 (en) | 2015-03-03 |
CN103249492A (en) | 2013-08-14 |
WO2012055051A1 (en) | 2012-05-03 |
US20130221132A1 (en) | 2013-08-29 |
TWI520784B (en) | 2016-02-11 |
CN103249492B (en) | 2016-01-27 |
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