EP4058640A1

EP4058640A1 - Jet regulator

Info

Publication number: EP4058640A1
Application number: EP20807008.6A
Authority: EP
Inventors: Gerhard Blum
Original assignee: Neoperl GmbH
Current assignee: Neoperl GmbH
Priority date: 2019-11-14
Filing date: 2020-11-12
Publication date: 2022-09-21
Also published as: WO2021094467A1; DE202019106347U1; CN215367591U; CN112796375B; US20220381014A1; CN114787458A; CN112796375A

Abstract

In an outflow structure (10) of a jet regulator (1) according to the invention, holes (17, 19, 25) are formed in the edge region of a regular arrangement (12) which are enlarged with respect to the regular arrangement (12), in order to avoid the formation of small holes (17, 19, 25) in the edge region.

Description

Ray reign

The invention relates to a jet regulator with an outlet structure which has an outlet grille with a regular arrangement of holes and an edge which delimits the outlet grille, holes in the outlet structure which are adjacent to the edge form a ring and one through the outlet structure Limit the flowing water jet to the outside, wherein the ring is designed differently from the regular arrangement.

Such jet regulators are known and are now manufactured from plastic using injection molding technology. It has become customary here to provide the outlet structure with a regular arrangement of holes, for example a hexagonal arrangement of hexagonal holes, in order to uniformly shape the spray pattern. This regular arrangement finds its limit in the dimensions of the jet regulator, which can, for example, have a round or rectangular or some other outer contour deviating from the arrangement.

The arrangement of the holes and a clear opening cross-section of the holes are matched to one another in such a way that individual jets that pass through the holes recombine behind the outlet structure to form a common water jet.

The invention is based on the object of improving the jet pattern of such a jet regulator.

The features of claim 1 are provided according to the invention in order to achieve the stated object. In particular, in order to achieve the stated object in the case of a jet regulator, the According to the invention, it is proposed that a hole in the ring is enlarged, deviating from the regular arrangement, if its clear opening cross-section would otherwise be less than half as large as a clear opening cross-section of an adjacent hole if the regular arrangement were continued. The invention makes use of the knowledge that the jet pattern is essentially determined by the partial jets that exit through the holes in the ring. The invention has also recognized that holes that are too small in the ring generate partial beams which do not recombine completely with the other, neighboring partial beams, but rather tend to form laterally branching interfering beams. By enlarging these too small holes, which results in a deviation from the uniform overall impression of the arrangement, it is possible to reduce such interference rays or even to avoid them entirely. The spray pattern is thus improved.

The ring can thus be defined as a collection of all those holes in the arrangement which is continued over the edge and which are trimmed by the edge.

In an advantageous embodiment, it can be provided that the regular arrangement of holes of the same size and / or the same shape is formed. A regular arrangement and the deviations from such an arrangement can thus be easily recognized.

In an advantageous embodiment, it can be provided that the ring is designed differently from the regular arrangement in that the edge trims individual holes in the ring. It is therefore possible to dispense with coordinating the arrangement with the geometry of the edge. In an advantageous embodiment it can be provided that the enlarged hole of the ring is enlarged at the expense of at least one adjacent hole. Thus, a simple formation rule is given to avoid holes in the ring that are too small.

For example, the adjacent hole can be in the ring. A size difference between holes within the ring can thus be compensated for.

It can also be provided that the adjacent hole is in the interior of the outlet structure. This means that holes that are too small can be moved inwards, where they do not interfere.

It is particularly favorable here if each hole in the ring is enlarged in a manner deviating from the regular arrangement, if its clear opening cross-section would otherwise be less than half as large as a clear opening cross-section of an adjacent hole if the regular arrangement was continued.

The advantage here is that the formation of interference rays can be reduced or even avoided along an entire circumference of the ring.

In the invention, the jet regulator can be designed as a ventilated or unventilated jet regulator.

The outlet structure can, for example, have a round, oval, polygonal, in particular rectangular or square, outer contour.

In an advantageous embodiment, it can be provided that a hole in the ring is enlarged, deviating from the regular arrangement, if its clear opening cross-section otherwise when the regular arrangement is continued from the clear opening cross-section of the adjacent hole deviates by more than 20%. It has been found that such small holes are particularly conducive to the formation of interference rays.

It is particularly favorable here if the hole of the ring is enlarged in deviation from the regular arrangement, if its clear opening cross-section otherwise deviates by more than 15% from the clear opening cross-section of the adjacent hole when the regular arrangement is continued. A distribution of opening cross-sections within the ring that is as uniform as possible can thus be achieved. This favors a particularly uniform design of an outer layer of the water jet and thus a particularly uniform jet pattern.

In an advantageous embodiment, it can be provided that the holes of the ring have clear opening cross-sections which are at most 50% above the clear opening cross-section of a hole in the interior of the outlet structure. The holes in the interior of the outlet structure can therefore be used as reference values. The advantage here is that the formation of holes that are too large in the ring can be avoided.

It is particularly favorable here if the holes of the ring have clear opening cross-sections that are at most 20%, in particular at most 15%, over the clear opening cross-section of a hole in the interior of the

Run-out structure. In this way, excessive deviations upwards in the clear opening cross-sections of the holes in the ring can be avoided.

It can even be provided that the holes of the ring have clear opening cross-sections that are on or below the clear opening cross-section of a hole in the interior of the Run-out structure. A particularly uniform external view of the exiting jet can thus be achieved.

In this case, the mentioned area proportions can be related to any hole, for example a median or mean value of the opening cross-sections, in the interior of the outlet structure. The surface fractions are preferably related to the largest hole or an uncut hole (that is to say, for example, one of the identical holes from which the arrangement is composed) in the interior of the outlet structure. A natural upper limit can thus be defined.

In an advantageous embodiment, it can be provided that the clear opening cross-sections of the holes in the ring vary by a maximum of 15%. Thus, the partial beams, from which one, for example the already mentioned, outer layer of the beam is composed, can be defined as equally large as possible. This enables a spray pattern that is as uniform as possible with as few interference rays as possible.

In an advantageous embodiment, it can be provided that the outlet structure has at least one rotational symmetry. Thus, a rotational symmetry of the outlet structure, for example a discrete or continuous rotational symmetry, can be transferred to the ring. This favors a particularly uniform formation of a jet pattern.

As an alternative or in addition to this, it can be provided that the outlet structure has at least one mirror symmetry. Thus, a mirror symmetry of the outlet structure, for example a plane mirror symmetry, can be transferred to the ring. This favors a particularly uniform formation of a jet pattern. As an alternative or in addition to this, it can be provided that the outlet structure has at least one point symmetry. Thus, a point symmetry of the outlet structure, for example a symmetry which the outlet structure transforms into itself by point reflection at a center, can be transferred to the ring. This favors a particularly uniform formation of a jet pattern.

In an advantageous embodiment, it can be provided that the outlet structure has a hexagonal arrangement.

It can be provided here or in another embodiment that the edge is circular. Thus, the invention can be used with jet regulators that can be screwed to a fitting by turning.

In an advantageous embodiment, it can be provided that the outlet structure has at least one hole in the interior, the clear opening cross section of which is less than 50% of a further hole in the ring and / or in the interior. It has been found that the formation of very small holes in the interior does not interfere with the jet pattern, so that other aspects, for example a pleasing design or the desire for a characteristic marking, can be taken into account.

For example, this at least one hole can be arranged in the interior of the outlet structure adjacent to the ring. It is thus possible to enlarge a hole in the ring at the expense of a hole in the interior. The arrangement can otherwise remain unchanged.

For example, the further hole in the ring or in the interior of the outlet structure can be a largest hole. So is a absolute upper limit for the clear opening cross-sections can be specified.

For example, the further hole in the ring or in the interior of the outlet structure can be an uncut hole. Thus, a dimensioning can be related to identical holes from which the regular arrangement is composed.

A particularly slight impairment of the overall appearance of the outlet structure results when the enlarged hole takes up the shape of the arrangement in at least one (edge) section.

The continuation of the arrangement to the edge can be made possible in that, for example, the holes that form the ring have clear opening cross-sections that differ from one another.

In an advantageous embodiment, it can be provided that at least one hole, which lies inside the outlet structure and is adjacent to a hole in the ring, is trimmed through this hole in the ring in such a way that its (remaining) clear opening cross section is smaller than that of the uncut holes of regular arrangement is. In this way, space is created in a simple manner for enlarging a hole in the ring that is too small. The invention has recognized that small holes inside, i.e. inside the ring, do not interfere with the jet pattern.

In an advantageous embodiment, it can be provided that the at least one hole, which the hole in the ring was enlarged at its expense, has an opening cross-section other than zero. Excessive deviations from the regularity of the arrangement can thus be avoided.

In an advantageous embodiment it can be provided that no hole in the ring has a clear opening cross-section which is smaller than one half of a clear opening cross-section of the largest and / or uncut holes of the regular arrangement. In this way, jets that are too thin and / or structures that are too fine in the outlet structure can easily be avoided.

It can also be provided that the hole in the interior, at the expense of which the hole in the ring was enlarged, is combined with a further hole in the interior to form a larger hole.

In an advantageous embodiment, it can be provided that a shape and / or an arrangement of enlarged or trimmed holes maintains / maintain a rotational symmetry of the regular arrangement. A pleasing and / or attractive design can thus be achieved.

In an advantageous embodiment, it can be provided that a width of the ring is limited by a largest clear dimension of a largest and / or uncut hole in the arrangement, in particular in the interior. A natural scale of the outlet structure can thus be used for dimensioning the width, for example a dimension transverse to the direction of rotation of the ring.

In an advantageous embodiment, it can be provided that edge sections in which the holes of the ring are delimited by the edge each have a length that is at least one half of a largest clear dimension of a largest and / or uncut hole in the arrangement, in particular in the interior, to have. The length of the edge sections can essentially determine the steel image, because it defines an outer dimension of the outer individual rays. In this way, individual beams that are too small can be avoided. In an advantageous embodiment, it can alternatively or additionally be provided that edge sections in which the holes of the ring are delimited by the edge differ in length from one another by at most 50%, preferably at most 30%. This results in an external appearance of the exiting jet that is as uniform as possible.

In an advantageous embodiment it can alternatively or additionally be provided that edge sections in which the holes of the ring are delimited by the edge, in their length from a largest clear dimension of a largest and / or uncut hole of the arrangement, in particular inside, by at most 50%, preferably at most 30%, deviate. The largest clear dimension is usually selected from a balance between the most efficient possible beam calming and the lowest possible beam disturbance. Thus, a dimensioning of the holes made for the interior of the beam can be transferred to the ring and thus the outer individual beams.

The invention will now be described in more detail on the basis of exemplary embodiments, but is not limited to these exemplary embodiments. Further exemplary embodiments result from the combination of the features of individual or multiple claims with one another and / or with individual or multiple features of the exemplary embodiments.

It shows:

Fig. 1 is a side view of an inventive

Jet regulator,

FIG. 2 shows the jet regulator according to FIG. 1 in an axial section,

3 shows the jet regulator according to FIG. 1 in one three-dimensional oblique view of his

Outlet structure,

4 shows an outlet structure of a jet regulator according to the

State of the art,

5 shows an outlet structure of an inventive

Jet regulator,

6 shows an outlet structure of a second jet regulator according to the invention and

7 shows an outlet structure of the third according to the invention

Aerator.

FIGS. 1 to 3 show a jet regulator according to the invention, designated as a whole by 1. The jet regulator 1 has an inflow side 2 and an outflow side 3. Arranged on the inflow side 2 is an attachment screen 4 through which water flows into an interior 32 of a housing 5. Functional units 6, for example a flow regulator 7 and / or a jet splitter 8 and / or a sieve insert 9, can be arranged in the housing 5.

The jet regulator 1 can have side ventilation openings in order to generate an aerated water jet, or it can be unventilated.

An outlet structure 10 is formed on the housing 5 on the outflow side 3.

FIG. 4 shows an outlet structure 10 according to the prior art. The outlet structure 10 has an outlet grid 11, through which a regular arrangement 12 of holes 13 of the same size and shape is created. These holes 13 can be referred to as uncut holes. Some holes are filled so that the regular arrangement 12 is interrupted at these points 14.

On the outflow side, the jet regulator 1 has an outer contour 15 which is round here and which forms an edge 16 which delimits the outlet grille 11.

The regular arrangement 12 is interrupted by this edge 16, and the holes 17 adjoining the edge 16 form a circumferential ring 18. The ring 18 is thus designed differently from the regular arrangement 12 in that the edge 16 has individual holes 17 of the ring 18 circumcised.

As a result of the delimitation of the regular arrangement 12, the holes 17 have different opening cross-sections which vary from a full opening cross-section of a hole 13 to a fraction of this opening cross-section. These only partially formed holes 17 result in a deviation from the regular arrangement 12.

The holes 17 of the ring 18 define the external appearance of the exiting water jet.

In this case, a partial jet passes through each of the holes 13, 17, the outlet grille 11 being dimensioned so thin that these partial jets recombine behind the outlet structure 10.

FIG. 5 shows an outlet structure 10 of a jet regulator 1 according to the invention. Functional or constructive to that Jet regulator 1 according to FIG. 4 similar or identical components and functional units are denoted by the same reference numerals and are not described again separately. The statements relating to FIG. 4 therefore apply accordingly to FIG. 5.

The hole 19 in the ring 18 is enlarged at the expense of the hole 20 in the interior 22 in order to avoid that its clear opening cross-section 21 if the hole 20 had the full hexagonal shape of the - here hexagonal as an example - regular arrangement 12, less than half as large as a clear opening cross-section, for example of the adjacent hole 17 in the ring 18. In the illustration, the regular continuation of the regular arrangement 12 is indicated by dashed hexagons 24.

Overall, a ring 18 results in that all holes 17,

19 are dimensioned so that no clear opening cross-section is smaller than half the clear cross-sections of the complete holes 13 of the regular arrangement 12.

Here it is actually harmless that individual holes

20 in the interior 22 within the ring 18 turn out to be very small. It has been found that these small holes 20 do not interfere with the jet pattern, since the associated partial jets remain enclosed in the water jet.

It can be seen that the hole 19, if it were delimited by the hexagon 24, would deviate by more than 20% from the clear opening cross section of an adjacent hole 23.

In Figure 5 it can also be seen that individual holes 25 are enlarged compared to the holes 13 in the interior 22, by the Avoid the formation of tiny holes. In the outlet structure 10, the holes 17, 19, 25, which form the ring 18, are limited at the top so that the clear opening cross-sections are no more than 1.5 times the clear opening cross-sections of the holes 13 in the interior 22.

Overall, the distribution of the clear opening cross-sections over the outlet structure 10 is as homogeneous as possible with deviations of less than 15% from a median or mean value or a largest hole 26 in the interior 22.

As a result of the enlargement of the holes 19, very small holes 27 are formed in the interior 22, the clear opening cross-section of which is less than 50% of a further hole 28 in the interior 22.

The outlet structure 10 in FIG. 5 has six-fold rotational symmetry about the center, one point symmetry with regard to point reflections at the center and three mirror symmetries on straight lines through the center.

FIG. 6 shows an outlet structure 10 of a further jet regulator according to the invention. Components and functional units that are functionally and / or structurally similar or identical to the preceding exemplary embodiments are denoted by the same reference symbols and are not described again separately. The explanations relating to the preceding figures therefore apply accordingly to FIG. 6.

In contrast to FIG. 5, here 22 largest holes 26 are formed in the interior by combining very small holes with full holes 13.

Furthermore, the holes 19 in the ring 18 are significantly enlarged, but are still below the clear opening cross-section of the largest holes 26.

FIG. 7 shows an outlet structure 10 of a further jet regulator according to the invention. Components and functional units that are functionally and / or structurally similar or identical to the preceding exemplary embodiments are denoted by the same reference symbols and are not described again separately. The statements relating to the preceding figures therefore apply accordingly to FIG. 7.

FIG. 7 represents a combination of the examples according to FIGS. 5 and 6.

Here, too, the clear opening cross-section of the holes 19 is not more than 1.5 times the opening cross-sections of the largest holes 26 in the interior.

The clear opening cross-section of the hole 23 is also trimmed, but this reduction is still acceptable for the formation of pleasing partial beams.

The outlet structure 10 has in the interior 22 at least one hole 20 which is adjacent to the ring 18 and whose clear opening cross section is less than 50% of a further hole 28 in the ring 18 and a largest hole 26 in the interior 22.

In FIGS. 5 to 7 it can still be seen, in particular by comparison with the drawn hexagons 24, that the enlarged hole 19 takes up a shape of the regular arrangement 12 in at least one section 29. This even applies to all holes 17, 19, 25 in the ring 18, in particular with the sections 29 each facing the interior 22.

In general, it can be said that the holes 17, 19, 25, which form the ring 18, have different clearances 21 have opening cross-sections.

In the figures it can also be seen that the hole 20, which lies in the interior 22 of the outlet structure 10 and is adjacent to a hole 19 of the ring 18, is trimmed by this hole 19 of the ring 18 in such a way that its lighter

The opening cross-section is smaller than that of the uncut holes 13 of the regular arrangement 12.

It can also be seen that no hole 19 of the ring 18 has a clear opening cross section 21 which is smaller than half of a clear opening cross section of the uncut holes 13 of the regular arrangement 12.

It can also be seen that a width 30 of the ring 18, that is to say a dimension transverse to the direction of rotation of the ring 18, is limited by a largest clear dimension of a largest and (uncut) hole 13 of the regular arrangement 12 in the interior 22.

Finally, it can be seen that edge sections 31, in which the holes 17, 19, 25 of the ring 18 are delimited by the edge 16, each have a length that is at least half of a largest clear dimension of an uncut hole 13 of the arrangement 12 in the interior 22, amounts to have.

These edge sections 31 differ in their length from one another and from a largest clear dimension of an uncut hole 13 of the regular arrangement 12 in the interior 22 by a maximum of 50%, here even by a maximum of 30%.

In further exemplary embodiments, the holes 19 are enlarged at the expense of an adjacent hole in the ring.

In general it can be said that a shape and an arrangement enlarged or trimmed holes 19 maintain a rotational symmetry of the regular arrangement 12.

In the case of an outlet structure 10 of a jet regulator 1 according to the invention, it is therefore proposed to have holes 17, 19, 25 in the

Forming the edge area of a regular arrangement 12 larger than that of the regular arrangement 12 in order to avoid the formation of small holes 17, 19, 25 in the edge area.

/ List of reference symbols

List of reference symbols

1 aerator

2 upstream side

3 downstream side

4 attachment sieve

5 housing

6 functional unit

7 flow regulator

8 jet splitters

9 sieve insert

10 Run-out structure

11 outlet grille

12 regular arrangement

13 (uncut) hole

14 digit

15 outer contour

16 edge

17 holes

18 ring

19 holes

20 holes

21 clear opening cross-section

22 inside

23 adjacent hole

24 hexagon

25 holes

26 largest hole

27 small hole

28 another hole

29 section

30 width of 18

31 edge section

32 interior

Claims

Expectations

1. Jet regulator (1), with an outlet structure (10), the one

Outlet grid (11) with a regular arrangement (12) of preferably uncut holes (13) and an edge (16) which delimits the outlet grid (11), holes (17, 19, 25) of the outlet structure (10), the to that

Edge (16) are adjacent, form a ring (18) and one flowing through the outlet structure (10)

Limiting the water jet to the outside, the ring (18) being designed differently from the regular arrangement (12), characterized in that one, in particular each, hole (17, 19, 25) in the ring (18) deviating from the regular arrangement ( 12) is enlarged if its clear opening cross-section (21) would otherwise be less than half as large as a clear opening cross-section (21) of an adjacent hole (23) if the regular arrangement (12) was continued.

2. Jet regulator (1) according to claim 1, characterized in that the regular arrangement (12) is formed by preferably uncut holes (13) of the same size and / or the same shape.

3. Jet regulator (1) according to one of the preceding claims, characterized in that the ring (18) is designed differently from the regular arrangement (12) by the edge (16) individual holes (17, 19, 25) of the ring ( 18) circumcised.

4. jet regulator (1) according to any one of the preceding claims, characterized in that the enlarged hole of the ring (18) at the expense of at least one adjacent hole (17, 19, 25), in particular the ring (18) and / or one

Inner (22) of the outlet structure (10) is enlarged.

5. jet regulator (1) according to any one of the preceding claims, characterized in that a hole (17, 19, 25) of the

Ring (18) deviating from the regular arrangement (12) is enlarged if its clear opening cross-section (21) otherwise more than 20% of the clear opening cross-section (21) of the adjacent hole (23), in particular if the regular arrangement (12) is continued more than 15%, deviates.

6. jet regulator (1) according to any one of the preceding claims, characterized in that the holes (17, 19, 25) of the

Rings (18) have clear opening cross-sections (21) which are at most 50%, in particular at most 20% or 15%, above the clear opening cross-section (21), in particular on or below the clear opening cross-section (21), of a hole (13, 20, 26), in particular a largest hole (26) and / or an uncut hole (13), lie in the interior (22) of the outlet structure (10).

7. jet regulator (1) according to any one of the preceding claims, characterized in that the clear

Opening cross-sections (21) of the holes (17, 19, 25) of the

Rings (18) vary by a maximum of 15%.

8. jet regulator (1) according to one of the preceding claims, characterized in that the outlet structure (10) has at least one rotational, mirror and / or point symmetry.

9. Jet regulator (1) according to one of the preceding claims, characterized in that the outlet structure (10) has a hexagonal arrangement and / or that the edge (16) is circular.

10. Jet regulator (1) according to one of the preceding claims, characterized in that the outlet structure (10) in the interior (22) has at least one hole (20), in particular adjacent to the ring (18), the clear opening cross-section (21) of which has less than 50% of a further hole (28) in the ring (18) and / or in the interior (22), in particular of a largest and / or uncut hole (13, 26).

11. Jet regulator (1) according to one of the preceding claims, characterized in that the enlarged hole (19) takes up a shape of the regular arrangement (12) in at least one section (29).

12. Jet regulator (1) according to one of the preceding claims, characterized in that the holes (17, 19, 25) which form the ring (18) have clear opening cross-sections (21) which differ from one another.

13. Jet regulator (1) according to one of the preceding claims, characterized in that at least one hole (20) which lies in the interior (22) of the outlet structure (10) and to a hole (17, 19, 25) of the ring (18 ) is adjacent, is trimmed by this hole (17, 19, 25) of the ring (18) in such a way that its clear opening cross-section (21) is smaller than that of the largest and / or uncut holes (13) of the regular arrangement (12) and / or that the at least one hole (20), which the hole (17, 19, 25) in the ring (18) was enlarged at its expense, has an opening cross-section (21) other than zero.

14. Jet regulator (1) according to one of the preceding claims, characterized in that the hole (20) inside, at the expense of which the hole (17, 19, 25) in the ring (18) enlarged, is combined with another hole inside to form a larger hole.

15. Jet regulator (1) according to one of the preceding claims, characterized in that no hole (17, 19, 25) of the ring (18) has a clear opening cross-section (21) which is smaller than one half of a clear opening cross-section (21) of the largest and / or uncut holes (13, 26) of the regular arrangement (12).

16. Jet regulator (1) according to one of the preceding claims, characterized in that a shape and / or an arrangement of enlarged or trimmed holes (17, 19,

25) maintains a rotational symmetry of the regular arrangement (12).

17. Jet regulator (1) according to one of the preceding claims, characterized in that a width (30) of the ring (18) by a largest clear dimension of a largest and / or uncut hole (13, 26) of the regular arrangement (12), in particular in the interior (22) is limited.

18. Jet regulator (1) according to one of the preceding claims, characterized in that edge portions (31) in which the holes (17, 19, 25) of the ring (18) are limited by the edge (16), each have a length at least one half of a largest clear dimension of a largest and / or uncut hole (13) of the regular arrangement (12), in particular in the interior (22), is, have and / or in their length from each other and / or of a largest clear dimension largest and / or uncut hole (13, 26) of the regular arrangement (12), in particular inside (22), deviate by at most 50%, preferably at most 30%. / Summary