EP2914784B1 - Jet regulator - Google Patents

Description

The invention relates to a jet regulator with a jet regulator housing, in the housing interior of which a perforated plate having a plurality of flow holes for dividing the water flowing through is provided.

Jet regulator of the type mentioned are already known in various designs. Such jet regulators are mounted on the water outlet of a sanitary outlet fitting to produce a homogeneous and laterally non-splashing water jet there. It has also procured jet regulator, which ventilate the escaping water steel and to mix the water flowing through it with the ambient air.

So is out of the DE 30 00 799 A1 already a ventilated jet regulator previously known, which has in its jet regulator housing a perforated plate having a plurality of Durchflußlöchern, which are arranged in concentric hole circles on the perforated plate and which should divide the water flowing through the jet regulator housing into a corresponding number of individual beams. Since the flow-through holes narrow the clear flow area in the area of the perforated plate, the water flowing through in the flow-through holes experiences an increase in speed, which causes a negative pressure on the outflow side of the perforated plate according to the Bernoulli equation. By the negative pressure generated on the downstream side of the perforated plate ambient air is sucked in, which penetrate through openings provided in the housing ventilation openings in the housing interior of the jet regulator housing and mixed there with the water flowing through. So that the flowing water is divided by the perforated plate with little noise in individual beams is in the off DE 30 00 799 A1 previously provided jet regulator, inter alia, provided that the flow holes have a polygonal cross-section hole portion, which is followed by a cross-section increasingly extended and downstream cylindrical portion of the hole (see FIG. 4 in DE 30 00 799 A1 ). Through such, different sections having flow holes in each of the flow holes a circular cross-section and linear outflowing single beam is generated.

From the EP 1 273 724 B1 (= DE 601 01 909 T2 ) is already known a jet regulator with a jet regulator housing, in the housing interior a perforated plate is provided which has flow holes, which have a constant clear cross-section in the flow direction. The perforated plate is followed by a baffle cone in the flow direction, which forms a constriction in the flow area of the previously known jet regulator. The individual beams generated in the perforated plate can tear the ambient air in the housing interior of the jet regulator housing with it and then hit on the inclined surface of the impact cone so that the ventilated individual jets are broken up and mixed with the entrained air.

However, the prior art jet regulators require a certain flow and sufficient water pressure in the pipeline network, so that sufficient negative pressure is generated on the downstream side of serving as a jet separator perforated plate to suck ambient air into the housing interior of the jet regulator housing. In contrast, the negative pressure formed at low flow and low water pressures is usually not sufficient to the ambient air with the flowing through To be able to mix water.

It is therefore an object to provide a jet regulator of the type mentioned, which is also at low flow and / or low water pressures, as they are often sought, for example, for water saving purposes, a sufficiently ventilated and accordingly perlender-soft water jet is able to produce. In this case, the generation of a possible voluminous beam is sought, which does not differ visually and haptically from the usual state of the art for the user, the jet regulator according to the invention should preferably be interchangeable with the known jet regulator designs.

The inventive solution to this problem is in the jet regulator of the type mentioned in the combination of features of claim 1. The jet regulator according to the invention has a jet regulator housing, in the housing interior is provided, for example, over the housing cross-section extending perforated plate. The perforated plate has a plurality of flow holes, which are intended for dividing the water flowing through. At least one of the provided in the perforated plate Flow holes expand towards its downstream side, and preferably to the downstream side increasingly conical or conical. As a result of the conical or conical spreading of the water emerging from the perforated plate, it can mix with the ambient air sucked into the jet regulator housing, even at low flow rates and low water pressures, practically over the entire housing cross section of the jet regulator housing.

In this case, the good air mixing of the water flowing through is favored even at low flow rates and low water pressures, if at least one flow hole to such a conical or conical widened to its downstream side, that emerging from the flow hole and by the conical shape or conicity widening single beam itself in the housing interior even before the impingement of individual jets on at least one disposed in the housing interior beam molding with the single beam at least one adjacent Durchflußloches mixed.

It may further be provided according to the invention that flow obstacles are provided on the outflow side of the perforated plate in the jet regulator housing and / or on the Abströmstirnfläche the jet regulator housing, which are arranged or concentrated there in a central or central region and redirect the water flowing through into an outer annular zone, on the other hand has no or a smaller number or total area of flow obstacles. In order to create the jet regulator with a jet regulator housing, which corresponds in terms of compatibility reasons in its dimensions to the dimensions of commercially available jet regulators, and still at low flow rates, a water jet which appears comparably voluminous in cross-section To form, the water flowing through the flow obstacles from a central or central area at least partially deflected into an outer annular zone, which forms the outer periphery of the exiting water jet.

An advantageous embodiment according to the invention provides that on the downstream side of the perforated plate at a distance from this on the housing inner circumference a circumferential baffle slope is provided, which increasingly narrows the clear housing cross-section in this area in the flow direction. In this advantageous embodiment, the exiting from the flow holes and already enriched with air water meets at a distance to the perforated plate on a baffle, which additionally mixes and divides the already treated water before the thus enriched with air water as a homogeneous, non- spouting and pearly-soft water jet can escape from the jet regulator.

A particularly easy to manufacture embodiment according to the invention provides that the baffle slope forms the inflow side of a Wandungsabschnitts, which is configured as at least one wavy constriction in longitudinal section.

In this case, the impact bevel can be designed as an inner peripheral side projection or inner peripheral side projection of the housing peripheral wall and can be integrally connected to the jet regulator housing or a jet regulator housing part.

However, an embodiment in which the baffle slope is preferred as a wall section of an annular or sleeve-shaped insertion part which can be inserted into the jet regulator housing is preferred is trained.

In order to use at least one beam molding in the housing interior of the jet regulator housing, even if the perforated plate serving as a jet splitter is integrally formed on the jet regulator housing, it is advantageous if the jet regulator housing is designed in several parts and has at least two, preferably releasably connectable housing parts.

In this case, particularly advantageous embodiments according to the invention, provide that the impact bevel is integrally formed on the housing inner circumference of a downstream housing part and / or that the perforated plate is integrally formed in the housing interior of an inflow-side housing part.

In addition to or preferably instead of a baffle slope, the perforated plate can be connected downstream of at least one mesh or lattice structure in the flow direction. The tapered or conically emerging from the flow holes and impinging on the at least one network or lattice water is braked there and decomposed with the adjacent disassembled portions of emerging from the adjacent flow holes water to then emerge as a soft overall beam from the jet regulator can.

Although such a lattice structure can also be formed by an inserted metal mesh, which is formed from two sets of preferably rectangularly interwoven metal wires, - preferred is an embodiment in which the network or lattice structure of two flocks, at intersection nodes intersecting webs is formed. Such a network or lattice structure, consisting of two flocks, at crossing nodes formed crossing webs can be produced in a simple manner as a plastic injection molded part.

In this case, a preferred embodiment according to the invention provides that the at least one, the perforated plate in the flow direction downstream network structure of radial webs and thus crossing at crossing nodes concentric webs is formed.

In order to further promote the decomposition of the water coming from the perforated plate, it may be advantageous if the perforated plate is followed in the direction of flow by at least two network or grid structures spaced apart from one another.

In this case, a preferred development according to the invention provides that at least one flow hole in the flow direction is aligned with a radial web of a network structure and with a concentric web of an adjacent network structure.

The divided in the perforated plate water flows out of the flow holes of the perforated plate less than single jet and rather than spray cone. In order to further break up and divide the spray cones emerging from the flow holes, it is advantageous if the webs each aligned with a flow hole overlap or intersect in the flow direction of the at least one flow hole in the various planes of these mesh or grid structures.

In order to produce the jet regulator according to the invention with relatively little effort, for example, from individual plastic parts, it may be advantageous if each Mesh or grid structure is formed by an insertable into the housing interior of the jet regulator housing insert.

In this case, a preferred embodiment provides that each insert part has on the outer peripheral side a circumferential annular wall, to which webs of the mesh or grid structure are held and preferably integrally formed.

The breaking up and dividing of the spray cone emerging from the throughflow holes of the perforated plate is further promoted if at least the concentric webs and preferably also the radial webs of a network structure in front in the direction of flow has an equal or smaller web thickness compared to the webs of a network structure adjacent downstream.

The flow holes provided in the perforated plate can be arranged on concentric hole circles. In the jet regulator according to the invention it is provided that the perforated plate has a central hole-free baffle which defines at least one annular wall, that the at least one annular wall has radially oriented passage openings, and that on the arranged in the baffle plane side of the flow openings each have a flow hole the perforated plate is provided. The deflected in this way in the region of the ring wall water is first braked, deflected to the side and mixed by optionally in opposite directions to each other inflowing streams before flowing through the through holes of the perforated plate and on the downstream side of the perforated plate in the form of a corresponding number of Sprühkegeln can escape.

In order to reshape in the housing interior of the jet regulator housing with ambient air and correspondingly fluidized water on the outflow side of the jet regulator back to a homogeneous overall jet and to be able to shape the emerging from the jet regulator water in a downstream homogenizer to a non-squirting emerging water jet, it is expedient if the outflow-side end face of the jet regulator housing by a net or

Honeycomb cell structure is formed, and when the outgoing end face forming net or honeycomb cell structure either inextricably connected to the jet regulator housing and in particular integrally formed or formed by an insertable into the jet regulator housing insert.

The equalization of the exiting from the jet regulator overall jet is still favored when the downstream or the end face of the jet regulator housing forming net or honeycomb cell structure is formed by webs, which taper at least in a downstream partial region in the flow direction. The invention provides that the jet regulator according to the invention is designed as a ventilated jet regulator, in whose housing interior at least one ventilation opening opens, which connects the housing interior with the atmosphere. In order for the at least one ventilation opening to be able to connect the interior of the housing to the atmosphere, at least one ventilation channel can be provided in a double-walled section of the jet regulator housing or in an annular gap surrounding the jet regulator housing, which is designed to be open towards the atmosphere. Further developments according to the invention will become apparent from the claims in conjunction with the figures and the description of the figures. Hereinafter, the present invention will be described in more detail with reference to preferred embodiments.

Fig. 1

einen, in einem perspektivischen Teil-Längsschnitt gezeigten Strahlregler, der am Außenumfang seines Strahlreglergehäuses ein Außengewinde trägt, mit dem der Strahlregler in ein Innengewinde am Wasserauslauf einer sanitären Auslaufarmatur lösbar eingeschraubt werden kann,

Fig. 2

den Strahlregler aus Figur 1 in einem Längsschnitt, wobei im Gehäuseinnenraum des Strahlreglergehäuses eine mit einem zuströmseitigen Gehäuseteil einstückig verbundene Lochplatte zu erkennen ist, die Durchflußlöcher trägt, welche sich zur Abströmseite der Lochplatte hin kegelförmig oder konisch erweitern,

Fig. 3

den Strahlregler aus Figur 1 und 2 in einem Längsschnitt durch Schnittebene III-III aus Figur 2, wobei durch die Durchflußlöcher der quergeschnittenen Lochplatte auch die der Lochplatte nachfolgenden Strukturen zu erkennen sind,

Fig. 4

eine Detailansicht der in Figur 3 gezeigten Querschnittsdarstellung im Bereich eines Durchflußloches der quergeschnittenen Lochplatte,

Fig. 5

den Strahlregler aus Figur 1 bis 4 in einer auseinandergezogenen perspektivischen Einzelteildarstellung,

Fig. 6

einen, mit dem Strahlregler gemäß Figur 1 bis 5 vergleichbar ausgestalteten Strahlregler, wobei der in Figur 6 gezeigte Strahlregler mit Hilfe eines hier nicht weiter gezeigten Auslaufmundstücks am Wasserauslauf einer sanitären Auslaufarmatur montierbar ist und wobei die abströmseitige Stirnfläche des in Figur 6 gezeigten Strahlreglers durch ein in das Strahlreglergehäuse einsetzbares Einsetzteil gebildet wird, welches eine Netzstruktur aufweist,

Fig. 7

die zuströmseitige Ansicht eines weiteren Strahlreglers, wobei diese zuströmseitige Ansicht vor allem ein dem Strahlregler zuströmseitig vorgeschaltetes Vorsatz- oder Filtersieb zeigt,

Fig. 8

den Strahlregler aus Figur 7 in einem Längsschnitt durch Schnittebene VIII-VIII aus Figur 7, wobei zu erkennen ist, dass der in Figur 8 gezeigte Strahlregler eine von der Abströmseite der Lochplatte beabstandete Prallschräge hat, die eine den lichten Durchflußquerschnitt des Strahlreglers in Strömungsrichtung verengende Einschnürung bildet,

Fig. 9

die Lochplatte des in Figur 7 und 8 gezeigten Strahlreglers in einem perspektivischen Teil-Längsschnitt,

Fig. 10

die abströmseitige Stirnfläche des in den Figuren 7 bis 9 gezeigten Strahlreglers in einer Unteransicht,

Fig. 11

den Stahlregler gemäß den Figuren 7 bis 10 in einer auseinandergezogenen perspektivischen Einzelteildarstellung,

Fig. 12

den Strahlregler aus den Figuren 7 bis 11 in einem vergrößerten Längsschnitt, wobei die Strömungsrichtung des den Strahlregler durchfließenden Wassers durch entsprechende Pfeile angedeutet ist, und

Fig. 13

die Lochplatte des in den Figuren 7 bis 12 gezeigten Strahlreglers in einem vergrößerten perspektivischen Teil-Längsschnitt.

It shows:

Fig. 1

one, in a perspective partial longitudinal section shown jet regulator, which carries on the outer circumference of its jet regulator housing an external thread with which the jet regulator can be detachably screwed into an internal thread at the water outlet of a sanitary outlet fitting,

Fig. 2

off the jet regulator FIG. 1 in a longitudinal section, wherein in the housing interior of the jet regulator housing a perforated plate integrally connected to an inflow-side housing part can be seen, which carries through-holes which extend conically or conically towards the downstream side of the perforated plate,

Fig. 3

off the jet regulator FIGS. 1 and 2 in a longitudinal section through section plane III-III FIG. 2 in which the through-holes of the cross-cut perforated plate also show the structures following the perforated plate,

Fig. 4

a detailed view of in FIG. 3 shown cross-sectional view in the region of a flow hole of the cross-cut perforated plate,

Fig. 5

off the jet regulator Figure 1 to 4 in an exploded perspective detail view,

Fig. 6

one, with the jet regulator according to Figure 1 to 5 similarly designed jet regulator, wherein the in FIG. 6 shown jet regulator with the aid of an outlet nozzle not shown here at the water outlet of a sanitary outlet fitting is mounted and wherein the downstream end face of in FIG. 6 shown jet regulator is formed by an insertable into the Strahlreglergehäuse insert part, which has a network structure,

Fig. 7

the inflow-side view of a further jet regulator, wherein this inflow-side view primarily shows an attachment or filter screen upstream of the jet regulator on the upstream side,

Fig. 8

off the jet regulator FIG. 7 in a longitudinal section through section plane VIII-VIII FIG. 7 , where it can be seen that the in FIG. 8 shown jet regulator has a spaced from the downstream side of the perforated plate baffle slope, which forms a narrow flow area of the jet regulator in the flow direction narrowing constriction,

Fig. 9

the perforated plate of in FIGS. 7 and 8 shown jet regulator in a perspective partial longitudinal section,

Fig. 10

the downstream end face of the in the FIGS. 7 to 9 shown jet controller in a bottom view,

Fig. 11

the steel regulator according to FIGS. 7 to 10 in an exploded perspective detail view,

Fig. 12

the jet regulator from the FIGS. 7 to 11 in an enlarged longitudinal section, wherein the flow direction of the jet regulator flowing through the water is indicated by corresponding arrows, and

Fig. 13

the perforated plate in the FIGS. 7 to 12 shown Beam regulator in an enlarged perspective partial longitudinal section.

In the FIGS. 1 to 13 three embodiments 1, 10, 100 of a jet regulator are shown. The jet regulator designs 1, 10, 100 are intended to be mounted on the water outlet of a sanitary outlet fitting in order to form a homogeneous and laterally non-splashing water jet there. In order to allow the jet of water to emerge as a pearly-soft water jet, the jet regulator designs 1, 10, 100 are designed as aerated jet regulators, in which the water flowing through is mixed with ambient air and enriched.

The jet regulator embodiments 1, 10, 100 have a sleeve-shaped and in cross section round jet regulator housing 2. The in the FIGS. 1 to 5 shown Strahlreglerausführung 1 has on the housing outer circumference of the jet regulator housing 2 on an external thread 3, which cooperates with an internal thread, which is arranged on the inner peripheral side at the water outlet of the outlet fitting not shown here. In this case, the jet regulator embodiment 1 illustrated here can be screwed into the water outlet in such a way that the downstream end face of the jet regulator housing 2 is arranged practically in one plane with the downstream end edge of the outlet fitting.
In contrast, those in the FIGS. 6 to 13 shown jet regulator versions 10, 100 with a sleeve-shaped outlet nozzle not shown here to assemble at the water outlet of the outlet fitting after the jet regulator 10, 100 was inserted from the inflow-side sleeve opening of the outlet mouthpiece in the sleeve interior to an annular shoulder 4 on the outer circumference of the jet regulator housing 2 a bearing in the outlet mouthpiece inner peripheral side bearing rests.

In the housing interior of the jet regulators 1, 10, 100, a perforated plate 5 is provided, which carries a plurality of Durchflußlöchern 6. At least one through-hole 6 and preferably all through-holes 6 of the perforated plate 5 extend conically or conically at least in an outflow-side partial region to their downstream side. The provided in the perforated plate 5 through holes 6 are intended for dividing the water flowing through. Due to the conical or conical spreading of the water emerging from the perforated plate, it can mix with the ambient air trapped in the jet regulator housing, even at low flow rates and low water pressures practically over the entire cross section of the jet regulator housing 2.

The flow holes 6 extend conically or conically in such a way that the water jet emerging from the flow holes 6 and widening due to the conical shape or conicity becomes at least one beam-shaped part with at least one beam preform arranged in the interior of the housing prior to the impact of individual jets on at least one beam molding part mixed through adjacent flow hole.

In order to divide the water flowing through even more and to mix with ambient air, is in the in the FIGS. 1 to 6 shown aerator embodiments 1, 10 of the perforated plate 2 in the flow direction downstream of at least one and preferably at least two network structures, which are formed of radial webs 7 and thus crossing nodes 8 concentric webs 9.

In the FIGS. 3 and 4 By way of example, it can be seen that at least one throughflow hole 6 and preferably all throughflow holes 6 are aligned in the flow direction with a radial web 7 of a network structure and here the network structure arranged downstream in the flow direction and with a concentric web 9 of an adjacent and here arranged on the inflow network structure. The respectively aligned with one of the flow holes 6 webs 7, 9 cover or intersect here in a central or central region of the associated Durchflußloches 6 in the different levels of these network structures.

From a comparison of Figures 2 . 5 and 6 It is clear that each of the network structures forming a jet regulator device is formed by an insertion part 11, 12 which can be inserted into the housing interior of the jet regulator housing 2. Each of these insert parts 11, 12 has on the outer peripheral side a peripheral annular wall 13, to which the radial webs 7 of the network structure crossing with the concentric webs 9 are connected and integrally formed here.

In FIG. 4 It can be seen particularly clearly that at least the concentric webs 9 and preferably also the radial webs 7 of a network structure in front in the direction of flow have a greater web thickness in comparison to the webs 9, 7 of a network structure adjacent downstream. In this way, each flow hole 6 in the perforated plate 5 in the flow direction appears to divide into a plurality of further smaller flow openings.

From a comparison of Figures 2 . 5 . 6 . 8 and 9 it can be seen that the perforated plates 2 provided in the jet regulator embodiments 1, 10, 100 have a central baffle surface 14, which is bounded by at least one annular wall 15. This annular wall 15 has oriented in the radial direction through openings 16, which are spaced apart here over the circumference of the annular wall 15 from each other. On the bottom side and thus on the arranged in the baffle plane side of the passage openings 16 each one of the through holes 6 of the perforated plate 2 is provided. By this deflection of the inflowing water in the region of the flow holes 6, the water is braked, deflected to the side and optionally mixed by, in opposite directions to each other inflowing streams to then experience as a result of narrowing of the flow in the flow holes 6 again an increase in speed. According to the Bernoulli equation, a vacuum is generated by this speed increase on the outflow side of the perforated plate 5, by means of which ambient air can be sucked into the housing interior of the jet regulator housing 2. In the housing peripheral wall of the jet regulator housing 2, at least one ventilation opening 17 which opens out on the outflow side of the perforated plate 5 in the interior of the housing is provided for this purpose. Beyond the central baffle surface 14, at least one further baffle surface 29, which circulates on the outside, may be provided, which is preferably arranged in the plane of the central baffle surface 14.

While the at least one ventilation opening 17 at the in Figure 1 to 5 shown jet regulator embodiment 1 is connected here via a double-walled portion 18 of the housing peripheral wall on the downstream side of the jet regulator 1 with the atmosphere, prevail in the in the FIGS. 6 to 13 shown jet regulator embodiments 10, 100, the ventilation openings 17, the jet regulator housing 2 in the radial direction and are on the outside of the jet regulator housing 2 with a Belüftungskanal connected, which is formed as an annular gap between the housing outer circumference of the jet regulator housing 2 and the inner circumference of the outlet nozzle and which is open to the downstream end of the outlet nozzle and jet regulator 10, 100 to the atmosphere.

Instead of the insert parts 11, 12, the in FIGS. 7 to 13 shown Strahlregler-Aüsführung 100 on the downstream side of the perforated plate 2 at a distance from this on the housing inner circumference a circumferential baffle slope 19, which increasingly narrows the clear housing cross-section in this area in the flow direction. This baffle slope 19 is formed by the inflow side of a wall section designed as a wavy constriction in longitudinal section. The wall portion having the baffle slope 19 is configured here as a ring-shaped or sleeve-shaped insertion part 20 which can be inserted into the jet regulator housing 2.

From a comparison of FIGS. 6 and 11 on the one hand and the FIG. 5 On the other hand, it is clear that the downstream end face of the jet regulators 1, 10, 100 is formed by a mesh structure 22 or a honeycomb cell structure 21. While the net or honeycomb cell structure 22, 21 forming the outflow-side end face of the jet regulators 1, 100 is permanently connected to the jet regulator housing 2, the outlet structure 22 of the in-net structure FIG. 6 shown jet regulator 10 formed by an insertable into the jet regulator housing 2 insert 23. From a comparison of FIGS. 8 and 10 It can be seen that the network structure 22 forming the outflow-side end face of the jet regulator 100 is formed by radial and concentric webs 24, 25 which taper at least in an outflow-side subregion in the flow direction. Since these webs 24, 25 at least in a downstream Rejuvenate portion in the flow direction, a homogenization and homogenization of the exiting through the network structure of the jet regulator housing 2 water in the form of a homogeneous total beam is additionally favored.

In the Figures 10 and 11 It is clear that 2 flow obstacles can be provided on the downstream side of the perforated plate in the jet regulator housing and / or - as here - at the Abströmstirnfläche the jet regulator housing, which are arranged or concentrated there in a central or central region and the water flowing through into an outer annular zone deflect, which in contrast has no or a smaller number or total area of flow obstacles. In the in the Figures 10 and 11 As shown in FIG. 2, these flow obstacles are formed by the concentric webs 25, which are concentrated at the outflow end face of the jet regulator housing 2 to a central or central area, while an outer ring zone is free from such concentric webs.

In the Figures 5 . 6 and 11 It is clear that the jet regulator housing 2 is formed here by two housing parts 26, 27 which can be detachably connected to one another and are preferably latchable with one another, of which the front housing part 26 on the inflow side is integrally connected to the perforated plate 6. So that the dirt particles possibly entrained in the water can not impair the proper functioning of the jet regulator, the jet regulator housing 2 is preceded by an attachment or filter screen 28, which is held detachably on the inflow-side housing part 26 here. This attachment or filter screen 28 has a multiplicity of round or rectangular, in particular hexagonal, filter or sieve openings.

LIST OF REFERENCE NUMBERS

1

Jet regulator (according to the FIGS. 1 to 5 )

2

Flow regulator housing

3

external thread

4

annular shoulder

5

perforated plate

6

Flow holes (in the perforated plate 5)

7

(radial) webs

8th

intersection node

9

(concentric) webs

10

Jet regulator (acc FIG. 6 )

11

(upstream) insert part

12

(downstream) insert part

13

Ring wall (on the inserts 11, 12)

14

Baffle (centrally on the perforated plate 5)

15

Ring wall (on the inflow side on the perforated plate 5)

16

Passage openings (in the annular wall 15)

17

Ventilation opening (in the jet regulator housing 2)

18

(double-walled) section (the housing peripheral wall)

19

impact slope

20

Insertion part (with baffle slope 19)

21

Honeycomb cell structure (as a downstream face of the jet regulator)

22

Net structure (as the downstream face of the jet regulator)

23

Insert (as a downstream end face of the steel regulator 10)

24

(radial) webs (the downstream end face of the jet regulator 100)

25

(concentric) webs (at the downstream end face of the jet regulator 100)

26

(upstream) housing part

27

(downstream) housing part

28

Attachment or filter screen

29

(outside circumferential) baffle (the perforated plate 5)

100

Jet regulator (according to the FIGS. 7 to 13 )

Claims (19)

1. Jet regulator (1, 10, 100) comprising a jet regulator housing (2), in a housing interior of which a perforated plate (5) is provided having a plurality of through-flow holes (6) for dividing water flowing therethrough, wherein at least one through-flow hole (6), at least in an outflow-side hole section, widens in a tapered or conical manner towards the outflow side thereof, and the jet regulator is configured as an aerated jet regulator which has at least one aeration opening (17), characterised in that the perforated plate (5) has a central, hole-free impingement surface (14) which is bordered by at least one annular wall (15), in that the annular wall (15) has passage openings (16) oriented in a radial direction, in that in each case one through-flow hole (6) of the perforated plate (5) is provided on the side of the passage openings (16) which is arranged in an impingement surface plane, and in that the annular wall (15) is bordered, on the outer peripheral side, by a circumferential impingement surface (29), and in that the aeration opening (17) issues into the housing interior on the outflow side of the perforated plate (5) and connects the housing interior to atmosphere.
2. Jet regulator as claimed in claim 1, characterised in that at least one through-flow hole (6), at least in an outflow-side hole section, widens in a tapered or conical manner towards the outflow side thereof such that the individual jet or spray jet which emerges from the through-flow hole (6) and widens by reason of the tapered shape or conicity, mixes in the housing interior with the individual jet of at least one adjacent through-flow hole (6) preferably even prior to impingement of individual jets upon at least one jet forming part arranged in the housing interior.
3. Jet regulator (100) as claimed in claim 1 or 2, characterised in that, on the outflow side of the perforated plate (5), flow obstructions are provided in the jet regulator housing (2) and/or on the outflow face surface of the jet regulator housing (2), said flow obstructions being arranged or concentrated at this location in a central or middle region and diverting the through-flowing water into an outer annular zone.
4. Jet regulator as claimed in any one of claims 1 to 3, characterised in that, on the outflow side of the perforated plate (5) and at a distance therefrom, a circumferential impingement bevel (19) is provided which narrows the clear housing cross-section in this region progressively in the flow direction.
5. Jet regulator as claimed in claim 4, characterised in that the impingement bevel (19) forms the inflow side of a wall section which is formed as at least one constriction which has a wavelike longitudinal section.
6. Jet regulator as claimed in any one of claims 1 to 5, characterised in that the jet regulator housing (2) is formed in multiple parts and has at least two housing parts (26, 27) which can be connected to one another in a detachable manner.
7. Jet regulator as claimed in any one of claims 4 to 6, characterised in that the impingement bevels (19) are formed integrally on the housing inner periphery of an outflow-side housing part (27) and/or in that the perforated plate (5) is formed integrally in the housing interior of an inflow-side housing part (26).
8. Jet regulator as claimed in any one of claims 1 to 7, characterised in that at least one mesh or lattice structure is connected downstream of the perforated plate (5) in the flow direction.
9. Jet regulator as claimed in claim 8, characterised in that the mesh or lattice structure is formed from two sets of webs (7, 9) which intersect at intersection nodes (8).
10. Jet regulator as claimed in claim 9, characterised in that the mesh structure is formed from radial webs (7) and from concentric webs (9) which intersect therewith at the intersection nodes (8).
11. Jet regulator as claimed in any one of claims 8 to 10, characterised in that at least two mutually spaced apart mesh or lattice structures are connected downstream of the perforated plate (5) in the flow direction.
12. Jet regulator as claimed in claim 10 or 11, characterised in that at least one through-flow hole (6) is aligned, in the flow direction, with a radial web (7) of one mesh structure and with a concentric web (9) of an adjacent mesh structure.
13. Jet regulator as claimed in any one of claims 10 to 12, characterised in that the webs (7, 8) which are aligned in each case with a through-flow hole (6) overlap or intersect, in the flow direction of the at least one through-flow hole (6), in the different planes of these mesh structures.
14. Jet regulator as claimed in any one of claims 10 to 13, characterised in that each mesh structure is formed by an insert part (11, 12) which can be inserted into the housing interior of the jet regulator housing (2).
15. Jet regulator as claimed in any one of claims 9 to 14, characterised in that each insert part (11, 12) has, on the outer peripheral side, a circumferential annular wall (13), on which webs (7) of the mesh or lattice structure are connected and preferably integrally formed.
16. Jet regulator as claimed in any one of claims 10 to 15, characterised in that at least the concentric webs (9) and preferably also the radial webs (7) of a mesh structure which is upstream in the flow direction has an identical or smaller web thickness in comparison with the webs (7, 9) of an adjacent mesh structure which is on the outflow side in the flow direction.
17. Jet regulator as claimed in any one of claims 1 to 16, characterised in that the impingement surface which encircles the annular wall (15) on the outer peripheral side is annular.
18. Jet regulator as claimed in any one of claims 1 to 17, characterised in that the outflow-side face surface of the jet regulator housing (2) is formed by a mesh or honeycomb structure (21; 22), and in that the mesh or honeycomb structure (21; 22) which forms the outflow-side face surface is either non-detachably connected to the jet regulator housing (2) and in particular is integrally formed therewith or is formed by means of an insert part (23) which can be inserted into the jet regulator housing (2).
19. Jet regulator as claimed in claim 18, characterised in that the mesh or honeycomb structure (21; 22) which forms the outflow-side face surface of the jet regulator housing (2) is formed by webs (24, 25) which, at least in an outflow-side sub-region, narrow in the flow direction.

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