DE102022106862A1 - Insert part for a jet regulator and associated manufacturing process - Google Patents

Abstract

In order to simplify the production of an insert part 6, which has two web structures 7, each of which forms a plurality of webs 9, it is proposed that the insert part 6 is manufactured by a casting process in such a way that the two web structures 7 touch each other in respective contact surfaces 32, but still remain separated from each other by a tool separation plane 11. This has the technical advantage that the respective outer contour of the webs 9 of the respective web structure 7 can be defined exclusively with a respective tool part 33/34, without an offset of the other tool part 34/33 having a negative effect on the shape of the webs 9.

Description

The invention initially relates to an insert part, which can be designed in particular for insertion into a receiving space of a jet regulator, wherein water can flow through the insert part along a flow direction. Such an insert part can be used in many applications and fluidic devices to favorably influence the flow behavior of a fluid.

The invention further relates to a jet regulator with a disassembly unit and an outlet unit and a receiving space formed therebetween, which is surrounded by a housing (and in particular can be formed by the housing), at least one insert part through which water can flow is inserted in the receiving space.

Finally, the invention relates to a method with which such insert parts can be produced.

Such insert parts and jet regulators are already known. The said separation unit often forms an input or separation stage and can break down a water cross section flowing into the jet regulator into numerous partial water jets. This results in a kind of “reset” of the flow conditions within the jet regulator, which thus become largely independent of the flow properties in the area of an inlet to the jet regulator. For this purpose, the jet regulator can also have, for example, a quantity regulator or flow limiter. The outlet unit or outlet stage finally forms the jet that emerges from the jet regulator. An admixture of air can be formed in the jet regulator to produce a soft, milky, cloudy jet.

The insert part arranged between the outlet unit and the disassembly unit in the receiving space makes it possible to further favorably influence the jet formation. The insert part often takes on the function of a fluidic mixing stage, which further homogenizes the jet. This means that the flow behavior in particular can be influenced favorably.

Furthermore, it is known to produce the individual components of such jet regulators using injection molding technology, for example as in WO 2021 123065 A1 described.

In practice, however, the problem often arises that undesirable sharp edges can occur because the injection molding tools used cannot be aligned with one another with any precision. If the tools show a slight misalignment, this often results in the formation of fine casting flags (especially if the liquid plastic penetrates into small gaps) and sharp edges. Such structures can then negatively influence the jet pattern generated by the jet regulator or the noise produced when water flows through the jet regulator. This is particularly annoying when long edges with a precise profile have to be formed. In particular, it is known that casting flags can form in the tool parting plane when the injection molding material is pressed between the tool parts.

The invention aims to eliminate this problem that occurs during production. To solve this problem, the features of claim 1 are provided according to the invention for an insert part. In particular, according to the invention, in order to solve the problem with an insert part of the type mentioned at the outset, it is proposed that the insert part is composed of two web structures which are arranged in two levels one above the other and which each have a large number of webs. Furthermore, it is provided that the two web structures are each separated from one another by a tool separating plane. Each of the two web structures can therefore be located completely in a respective half-space, which is separated by the tool separation plane (the two half-spaces are therefore opposite each other). Although these two half-spaces can touch each other, namely in the tool parting plane, they do not show any overlap or no overlap volume.

The tool parting plane can correspond to an imaginary mathematical plane that is flat (i.e. has a curvature of zero in relation to two orthogonal axes that lie in the plane).

In other words, according to the invention, the respective web structure, more precisely the outer edges and side surfaces of the respective webs of the web structure, can be defined or have been defined only by means of a part of a tool (in particular a tool half) used when casting the insert part. Therefore, the respective part of the tool only needs to have recesses for the webs of one of the two web structures. If the two parts of the tool are joined together to form a cavity through which the insert part to be cast is defined, they collide at the tool parting plane.

An offset of a first work, as described at the beginning, has a corresponding effect Tool half, which serves to define a first of the two web structures, does not affect the shape of the second web structure of the insert part along the tool parting plane. This significantly improves or simplifies the production of the insert part.

The two planes in which the web structures are arranged can in particular run parallel to the tool parting plane. Due to the separation caused by the tool separation plane, it can be achieved in particular that the respective webs of the two web structures do not mesh with one another, but only touch each other in contact surfaces that lie in the tool separation plane. These contact surfaces can be formed by the respective overlaps between webs of the two adjacent web structures of the insert part. In this case, the insert part can in particular be designed in such a way that the webs of one of the web structures form respective contact surfaces but not an overlap volume with webs of the adjacent web structure.

The inventive design of the insert part avoids that the web structure that lies in the upper level merges into the web structure that lies in the lower level along a longer edge, because this would lead to the formation of undesirable edge shapes, in particular to the formation of cast flags , lead if the two tool halves used for injection molding the insert part are incorrectly aligned relative to each other, i.e. show an (often unavoidable) offset. This problem no longer exists, especially if the webs of the touching web structures are angled, since an offset between the tool halves no longer has a significant effect on the formation of edges of the webs, since the contact surfaces between the two web structures may shift (minimally), but only slightly change in size. This means that a usable insert part can still be injection molded even if the two tool halves are slightly offset. As a result, rejects can be avoided during the production of the insert part.

As will be explained, insert parts according to the invention can be used to regulate the water flow in jet regulators. However, they can also be used, for example, in other line sections of fluidic, in particular sanitary, devices through which fluid flows in order to positively influence the fluid flow, for example in order to achieve a noise reduction. The invention is primarily concerned with how such structures can be manufactured efficiently and with as little waste as possible and how assembly can be simplified if several such (particularly identically designed) insert parts have to be assembled into a stacking arrangement.

According to the invention, the task mentioned at the beginning can also be solved by further advantageous embodiments according to the subclaims.

For example, the webs of the upper web structure can intersect with the webs of the lower web structure at contact surfaces. Furthermore, in particular webs of the same web structure can branch out at branching points, and this can be implemented for one or both of the two web structures.

Furthermore, configurations are possible in which the respective webs run at a crossing angle β to one another at points of contact between the two web structures (i.e. where two webs of the two web structures meet). The angle β can, for example, be a constant 90°, for example in an embodiment in which the respective webs of the upper web structure run strictly parallel to one another and each form an angle of 90° with the webs of the lower web structure (which also run strictly parallel to one another). The angle can be measured by projecting the respective web into the tool parting plane.

Embodiments are also conceivable, for example with curved webs, in which the angle β varies along the course of a web and in particular is sometimes less and sometimes more than 90°. For example, when using honeycomb-shaped free spaces between the webs, which can be designed, for example, in a triangular shape or hexagonal shape, there can be, for example, several points of contact with different angles β per honeycomb.

The crossing angle β can also be dimensioned such that an area of a respective contact surface of the intersecting webs (the two web structures) in the tool parting plane is at most three times the square of a (e.g. maximum) width of the respective web, measured transversely to a direction of progression of the web, amounts.

Furthermore, configurations are possible in particular in which the following applies to the crossing angle β: β > 20°. The following can then preferably also apply: β < 90°. In such configurations, very small crossing angles β of the webs are therefore excluded. At β = 45°, the ratio between the contact area and the square of the web width is approximately 1.5, at 20° the ratio increases to > 3. Providing a certain minimum size for the crossing angle has the technical advantage that a small offset between the tool halves can still be tolerated during injection molding because this changes the position of the crossing surface changes only insignificantly. However, if the webs run at very small crossing angles to one another, the crossing area becomes very large and is therefore susceptible to the formation of undesirable cast flags on the edges of the webs, as a result of an offset between the tool halves.

In further embodiments, the angle β can, at least partially, be less than 90° or equal to 90°. It can also be provided that the angle β at individual points of contact (additional or supplementary) is more than 90°.

The at least two web structures of the insert part can preferably be connected or formed in one piece with one another. This is possible in particular if the insert part is manufactured as a cast part, preferably as an injection molded part. Such production can be carried out in particular using two tool parts, in particular two injection molding tool halves, which collide in the tool parting plane. In such cases, it is particularly advantageous if the two web structures are designed to be free of undercuts along a demolding direction that is perpendicular to the tool parting plane. This configuration has the advantage that each of the two web structures can be manufactured with one tool half of a (common) injection molding tool.

According to a further possible embodiment, it is provided that the insert part has at least one web structure, the webs of which, at least partially, run non-parallel to one another, i.e. in particular at angles of less than 90°. In this case, branching points can be formed between webs of the same web structure.

According to a further possible embodiment, it is provided that at least one of the two web structures has webs which show an S-shaped course in the said plane. Such an S-shaped course can in particular have two turning points.

It can therefore be provided in particular that the two web structures from which the insert part is composed form different types of web gaps. For example, a web structure can form elongated slots in an upper level, while the adjacent web structure forms honeycomb-shaped free spaces in a lower level.

The said tool separation plane can be understood as an xy plane and this can divide the insert part into the two web structures.

If the two web structures are designed in the same way, it can be provided that the two web structures of the insert part are designed, in particular strictly, symmetrically to one another with respect to the tool parting plane.

For example, the two web structures can be designed so symmetrically to one another that the two web structures can be aligned by an (imaginary) rotation through 180° about an x-axis lying in the tool parting plane and (i) by rotation through an angle φ about a z -Axis and/or can be converted into one another by displacement along a y-axis located in the tool parting plane and/or along an x-axis located in the tool parting plane. In other words, the same situation is obtained with regard to the position of the through channels formed by the insertion part if the insertion part designed in this way is first rotated by 180° around the x-axis (“flipping”) and then one or both of the operations (i ) or (ii). The symmetry described is therefore based on an isometric transformation of the respective web structure, which maintains the lengths and angles of the web structure, i.e. with such a symmetrical configuration, the length and angle ratios of the two web structures of the insert part can be designed identically. The advantage of such symmetrical configurations of the insert part is, for example, that it does not matter in which orientation the insert parts are assembled to form a stacking arrangement. If the affected insert part was inserted in the wrong orientation (= rotation by 180° around the x-axis), a corresponding rotation by φ around the z-axis may already be sufficient to achieve the desired alignment of the web structure.

In the embodiment described above, it can preferably be provided that the angle φ = 360°/N is formed as an integer division of 360°, i.e. in particular with φ = 90° or φ = 120° or also φ = 60°.

It can also be provided that the two (imaginary) planes (which describe the position of the web structures) are each aligned radially or vertically with respect to an axial insertion direction of the insertion part or the mentioned flow direction in which the one water can flow through the power supply unit. The axial insertion direction can correspond precisely to the main flow direction in which the water flows through a jet regulator having the insertion part, in particular through said insertion part. Furthermore, all web surfaces of the webs of each web structure, which are aligned with the tool parting plane (i.e. point “inwards”), can lie in a respective radial plane with respect to the insertion direction/the flow direction of the insert part. To solve the problem with the cast flags, it is advantageous if these web surfaces are planar and lie in the tool parting plane. In this case, these web surfaces can be limited during injection molding by a planar, inside surface of the corresponding tool half of the injection molding tool.

At least one, in particular both, of the web structures can also form web spaces in the form of honeycombs arranged between the webs. These honeycombs can in particular have a hexagonal shape or a triangular shape. In such a configuration, several such honeycomb-shaped web spaces can also be lined up along an (imaginary) secant in relation to a circumference of the web structure (to form a chain). The honeycombs can be separated from each other by respective webs. Such configurations make it possible in particular for an adjacent web structure, in particular of the same insert part or an adjacent insert part (if several insert parts are used in a stack arrangement), to form web spaces in the form of slots. These slots can extend as secants up to the respective circumference of the web structure.

The said honeycomb-shaped web spaces can be designed to be consistent in their respective size and shape. However, organic or ornamental web structures can also be designed in which the individual web spaces differ in their respective shape and/or size.

According to a further embodiment, the respective webs of the two web structures can each form side surfaces which are axially aligned in an insertion direction of the insertion part (which can coincide with said flow direction) and which run coaxially to one another.

It can therefore also be provided that through-channels are formed by the web gaps existing between the webs, which are aligned in the insertion direction/the flow direction and are delimited by the webs. In this case, it is particularly preferred if the webs of the two web structures of the respective insert part are arranged relative to one another in such a way that the through channels run in a straight line and/or without twisting in the insertion direction/flow direction.

For smooth removal of the insert part, for example after injection molding, it is also advantageous if both web structures have cross-sections everywhere that point away from the tool parting plane and these cross-sections do not increase (in the direction pointing away from the tool parting plane). This means that the cross sections can form (starting from the tool parting plane) in particular constant or tapering cross sections, again everywhere.

To solve the problem, a jet regulator as described above is also proposed. This is characterized in that the at least one insert part is designed according to one of the claims directed to an insert part and/or as described above.

In the receiving space, at least two insert parts designed according to the invention can preferably be arranged one above the other in a stacking arrangement in an axial insertion direction. This insertion direction can run straight perpendicular to the said (radially oriented) tool parting plane and/or correspond to the mentioned flow direction of a water flow through the at least one insert part.

It is particularly preferred here if the at least two insert parts are designed to be similar or identical to one another. It can also be additionally or alternatively provided that the at least two insert parts are arranged rotated relative to one another by an angle α about the insertion direction. The following can apply here, for example: α = φ/2, with φ the angle that describes the relative rotation of the two web structures of the insert part after one of the two web structures has been mentally flipped/rotated by 180° about an axis lying in the tool parting plane. In particular, the following may apply: α = 45° with φ = 90° or, for example, α = 60° with φ = 120°.

Such a configuration has the advantage that when stacking a total of three insert parts (in particular identically designed/produced with the same casting tool) one on top of the other, the order and orientation of the insert parts is irrelevant, since the desired pattern of through-channels can always be formed (by appropriate rotation of the Insertion part around the z-axis).

In such designs of the jet regulator, when the insert part(s) are inserted, the receiving space can only be flowed through through passage channels which are formed by the at least one insert part. Then the insert part or the stack arrangement defines the flow behavior of the receiving space.

When using several insert parts in a stack arrangement, through channels axially aligned in the insertion direction, which are formed by one of the insert parts, can be at least partially covered by a web structure of an adjacent insert part of the stack arrangement (relative to the insertion direction). This is advantageous in order to enable an even finer division of the water flow through the receiving space. In this case, these coverings can be formed in particular by a respective branching point of two webs of one of the web structures (of an adjacent insert part).

The through channels, which are axially aligned in the insertion direction and are formed by one of the insert parts, can also meet a point of contact of the two web structures of an adjacent insert part of the stack arrangement in the stack arrangement. This is possible especially when these web structures do not form any branching points, for example because all webs of the respective web structure run strictly parallel to one another.

In such configurations - based on the entire stack arrangement - a cross-sectional area occupied by a respective through-channel cannot be completely flowed through by water in the axial direction. This specifies a flow cross section (with respect to an axial direction and the entire stack) that is smaller than the respective through-channel that is predetermined by one of the insert parts. For clarification, it should be mentioned at this point that the area of the respective through-channel can be smaller than a respective web space, which is defined by one of the two web structures of the insert part.

In such configurations, at least some of the water can inevitably follow a zigzag course as it flows through the stack arrangement and thus deviate from a strictly axial flow direction. In other words, in such a configuration, the through channels of two adjacent insert parts of the stacking arrangement do not have to be aligned, but rather they can be arranged offset from one another so that they do not completely overlap.

A particularly preferred embodiment provides that the at least two insert parts are aligned with one another with respect to a relative rotation angle α about the insert direction by means of respective alignment aids that engage with one another in the insert direction. This angle of rotation α can in particular be the previously described angle α. The respective alignment aids can be designed in a particularly simple manner in one piece with the respective web structure, for example in the form of axial and mutually corresponding projections and recesses.

It is even more advantageous if upper and lower alignment aids are formed on at least one of the insert parts, which are aligned with one another with respect to an insertion direction. This makes assembly of the stacking arrangement easier if an insert part is accidentally inserted in the wrong orientation (rotation by 180° around the x-axis).

For example, at least four, in particular at least six, alignment aids can be formed along a circumference of one (preferably all) of the at least two insert parts. These alignment aids can point axially in the same direction. Furthermore, they can be evenly distributed along the circumference. This can in particular ensure that the said relative angle of rotation α is at most 45°, in particular at most 30°.

An injection point used in the injection molding of the respective insert part can be arranged, for example, in the center of the insert part or, for example, on the edge, in particular on the circumference.

A particularly preferred embodiment, which reduces manufacturing costs, provides that each of the at least two insert parts of the stacking arrangement can be arranged, or is arranged, with an identical copy of itself in the compact stacking arrangement. In this stacking arrangement, a lower axial profile of the insert part can engage in an upper axial profile of the (identical) insert part. This means that in such a stacking arrangement, the two identical insert parts used can be arranged rotated relative to one another by an angle α about an insertion direction.

Thus, the at least two insert parts can in particular all be shaped/designed identically to one another, in other words they can be manufactured with the same two injection molding tool halves. The insertion direction can then correspond to the direction in which two identical insert parts (according to Rota tion around the angle α) can be brought together to form a compact 2-stack arrangement.

To solve the problem, a method for producing an insert part is also proposed, whereby this insert part can be designed as described above or according to one of the claims directed to an insert part. The insert part can therefore be provided in particular for insertion into a receiving space of a jet regulator. The method provides that the insert part is produced as a cast part, in particular by means of injection molding, and is further characterized in that the insert part is composed of two web structures which are arranged in two levels one above the other and which each form a plurality of webs , and that a first tool part is used to form a first of the two web structures during casting, while a second of the two web structures is formed only with a second tool part during casting.

Here, the first tool part can define the tool parting plane and thus also limit the second web structure defined by the second tool part; However, the shape of the webs, in particular their (preferably axially aligned) side surfaces, is only defined by the second tool part. Accordingly, an offset of the first tool half along the tool parting plane has no effect on the shape of the second web structure of the insert part with the help of the second tool half.

The two tool parts can therefore preferably be designed as tool halves of an injection molding tool. During the casting process, the two tool halves are joined together along the tool parting plane in order to form a cavity that defines the outer contour of the insert part manufactured as a cast part, in particular as an injection molded part. After liquid casting material has been introduced into the cavity and the casting material has hardened, the tool halves can be separated from one another again (which can typically be done perpendicular to the tool separation plane, i.e. along the demolding direction described above), in order to remove the finished insert part as a casting from the cavity can. As was already explained at the beginning, the invention avoids the formation of undesirable casting flags during the casting process and thus waste during production due to the specific position of the tool parting plane and the described design of the manufacturing process.

The invention will now be described in more detail using exemplary embodiments, but is not limited to these exemplary embodiments. Further developments of the invention can be obtained from the following description of a preferred exemplary embodiment in conjunction with the general description, the claims and the drawings.

In the following description of various preferred embodiments of the invention, elements that have the same function are given the same reference numbers even if they have a different design or shape.

• 1 1 eine Außenansicht eines erfindungsgemäßen Strahlreglers,
• 2 einen Querschnitt durch einen weiteren erfindungsgemäßen Strahlregler, wobei der Strahlregler in eine Sanitärarmatur eingeschraubt ist,
• 3 einen Querschnitt durch den Strahlregler der 1
• 4 einen Querschnitt durch ein erfindungsgemäß ausgestaltetes Einsetzteil,
• 5 eine Stapelanordnung aus drei identisch ausgestalteten erfindungsgemäßen Einsetzteilen,
• 6 eine Aufsicht von oben auf ein weiteres erfindungsgemäßes Einsetzteil,
• 7 das Einsetzteil der 6 in Schrägansicht von oben,
• 8 das Einsetzteil der 6 in Aufsicht von unten,
• 9 das Einsetzteil der 6 in Schrägansicht von unten,
• 10 ein weiteres erfindungsgemäß ausgestaltetes Einsetzteil,
• 11 eine Explosionsansicht des Strahlreglers aus 1,
• 12 die Stapelanordnung 13 der drei Einsetzteile, die in 11 zu sehen sind,
• 13 die Stapelanordnung der 12 in Schrägansicht,
• 14 verschiedene Ansichten eines weiteren erfindungsgemäßen Einsetzteils,
• 15 verschiedene Ansichten eines weiteren erfindungsgemäß ausgestalteten Einsetzteils,
• 16 verschiedene Ansichten eines weiteren erfindungsgemäß ausgestalteten Einsetzteils,
• 17 verschiedene Ansichten eines erfindungsgemäß ausgestalteten Einsetzteil,
• 18-21 jeweils Stapelanordnungen 13 aus je drei (jeweils) erfindungsgemäß ausgestalteten Einsetzteilen,
• 22 eine Detailansicht auf die Stegstruktur des in 15 gezeigten Einsetzteils,
• 23 eine Detailansicht des in 14 gezeigten gemäßen Einsetzteil,
• 24 illustriert die Ausbildung von Gussfähnchen an Kanten von Stegen einer Stegstruktur,
• 25 eine detaillierte Aufsicht auf die Stegstruktur des Einsetzteils aus 17,
• 26 eine detaillierte Aufsicht auf die Stegstruktur des Einsetzteils aus 14,
• 27 eine detaillierte Aufsicht auf die Stegstruktur des Einsetzteils aus 16,
• 28 zwei Werkzeugteile in Form zweier Werkzeughälften zum Herstellen eines erfindungsgemäßen Einsetzteils mittels Spritzguss,
• 29 die untere der beiden in 28 illustrierten Werkzeughälften in einer perspektivischen Schnittansicht,
• 30 einen perspektivischen Querschnitt durch die Werkzeughälfte aus 29 aber mit noch eingesetztem Einsetzteil, welches durch Spritzguss mit den beiden Werkzeughälften aus 28 hergestellt wurde,
• 31 dieselbe Situation wie in 30, nur an einer etwas leicht versetzten Stelle geschnitten,
• 32 ein aus dem Stand der Technik vorbekanntes Einsetzteil zur Verwendung in einem Strahlregler, welches gerade nicht erfindungsgemäß ausgestaltete Stegstrukturen aufweist,
• 33 einen Längsschnitt durch die obere Werkzeughälfte (Vgl. 28), analog zu 31 für die untere Werkzeughälfte, und schließlich
• 34 einen weiteren Längsschnitt durch die obere Werkzeughälfte (Vgl. 28), analog zu 33, allerdings an einer anderen dezentralen Stelle geschnitten.

It shows:

• 1 1 an external view of a jet regulator according to the invention,
• 2 a cross section through another jet regulator according to the invention, the jet regulator being screwed into a sanitary fitting,
• 3 a cross section through the jet regulator 1
• 4 a cross section through an insert part designed according to the invention,
• 5 a stack arrangement of three identically designed insert parts according to the invention,
• 6 a top view of another insert part according to the invention,
• 7 the insert part of the 6 in an oblique view from above,
• 8th the insert part of the 6 in supervision from below,
• 9 the insert part of the 6 in an oblique view from below,
• 10 another insert part designed according to the invention,
• 11 an exploded view of the aerator 1 ,
• 12 the stacking arrangement 13 of the three insert parts, which are in 11 you can see,
• 13 the stacking arrangement of the 12 in an oblique view,
• 14 different views of a further insert part according to the invention,
• 15 different views of a further insert part designed according to the invention,
• 16 different views of a further insert part designed according to the invention,
• 17 different views of an insert part designed according to the invention,
• 18-21 stacking arrangements 13 each consisting of three (each) insert parts designed according to the invention,
• 22 a detailed view of the bridge structure of the in 15 insert part shown,
• 23 a detailed view of the in 14 appropriate insert part shown,
• 24 illustrates the formation of cast flags on edges of webs of a web structure,
• 25 a detailed overview of the web structure of the insert part 17 ,
• 26 a detailed overview of the web structure of the insert part 14 ,
• 27 a detailed overview of the web structure of the insert part 16 ,
• 28 two tool parts in the form of two tool halves for producing an insert part according to the invention by means of injection molding,
• 29 the lower of the two in 28 illustrated tool halves in a perspective sectional view,
• 30 a perspective cross section through the tool half 29 but with the insert part still inserted, which is made by injection molding with the two tool halves 28 was produced,
• 31 same situation as in 30 , only cut in a slightly offset place,
• 32 an insert part known from the prior art for use in a jet regulator, which has web structures not designed according to the invention,
• 33 a longitudinal section through the upper half of the tool (cf. 28 ), analogous to 31 for the lower half of the tool, and finally
• 34 another longitudinal cut through the upper half of the tool (cf. 28 ), analogous to 33 , but cut at a different decentralized location.

The 1 shows a jet regulator 1 designed according to the invention, the components of which are shown in the cross-sectional view 3 can be seen, with the outer housing 5 also, for example, as in 2 could be designed so that the jet regulator 1, as in 2 shown can be screwed into a sanitary fitting 37. The aerator 1 of the 1-3 each have a disassembly unit 2 and an outlet unit 3 as well as a receiving space 4 formed between them, which is surrounded by the housing 5 and is formed by the housing 5 in the embodiments shown. In the receiving space 4, a total of three insert parts 6 designed according to the invention are arranged one above the other in a stacking arrangement 13, each of the three insert parts 6 being filled with water in the in 2 Flow direction 31 shown can be flowed through.

The 4 shows an example of the design of one of the insert parts 6 of the jet regulator 1 in a cross-sectional view. The centrally arranged and dashed line 11 denotes a tool separation plane 11, which is used in the production of the insert part 6 by means of injection molding and which divides the insert part 6, which is made in one piece from a cast material, into two halves. In each of these two halves (or half-spaces, separated by the tool parting plane 11), a respective web structure 7 is formed, for example as in the 5-17 can be illustrated.

The insert part 6 is thus composed of the two web structures 7, which, as in 4 shown, are arranged in two superimposed planes 8, each of which runs parallel to the tool parting plane 11. Each of the two web structures 7 has a large number of webs 9. Since the webs 9 of the upper web structure 7 in 4 However, running horizontally from left to right, only one of these webs 9 can be seen in cross section for the upper web structure 7. The planes 8, in which the two web structures 7 are arranged, are each aligned radially or perpendicular to the flow direction 31, as shown 4 shows. As a result, the respective web surfaces 19 of the webs 9, which are aligned inwards to the tool parting plane 11, (see also 22 and 23 ) in a respective radial plane 20 with respect to the flow direction 31 or the insertion direction 14.

From the 15 , the further views of the insert part 6 of the 4 shows, it is clearly visible that the two web structures 7, each having a large number of webs 9, are separated from one another by the (imaginary) tool separation plane 11. At those points where the webs 9 of the upper web structure 7 intersect with the webs 9 of the lower web structure 7, contact surfaces 32 are thus formed between the two web structures 7. As can be seen from the synopsis of the 4 and 15 As can be seen, the web structures 7 do not overlap and therefore in particular do not form an overlap volume.

The 6 , 7 , 8th and 9 and 14 and 17 show further examples of insert parts 6 designed according to the invention, each of which is composed of two web structures 7.

In these embodiments, however, the webs 9 of the same web structure 7 branch out at branching points 35. There are also still contact surfaces 32 between the two web structures 7. The said branching points 35 are formed in that at least one web structure 7 of the insert part 6 has webs 9, which do not run parallel to each other (but at angles to each other) and thus collide at the branch points 35.

As can be seen from the detailed views of the 25-27 As can be seen, the respective webs of the two mutually adjacent web structures 7 of the respective insert part 6 run at the respective contact points 12 at a crossing angle β. In all of these configurations, the crossing angle β is dimensioned so that a respective surface area is defined by the respective contact surface 32 (where the contact surface 32 lies in the tool parting plane 11 - see also). 4 and defines the area on which webs 9 of two adjacent web structures 7 intersect), is at most three times the square of a maximum width of the respective web 9. Here, the width is measured transversely to the main direction of the web 9.

In addition, in all of these configurations the crossing angle β is designed to be >20°; just the examples of 25-27 also show crossing angles of β < 90°.

This in 4 Insert part 6 shown is, like all insert parts 6 of the other figures, manufactured as an injection molded part 27. Therefore, the two web structures 7 are connected to one another in one piece or are designed monolithically, as can be seen in particular from the hatching in the cross-sectional view of the 4 is visible.

The 16 shows a further possible embodiment of an insert part 6 according to the invention, in which the webs 9 of the two web structures 7 each show an S-shaped course. The respective S-curve has in particular two turning points 36.

In the example of the 15 the respective webs 9 of the respective web structure 7 each run strictly along a specific direction, with these two directions enclosing an angle of φ = 90 °. Accordingly, the web structures 7 each form web spaces 18 in the form of elongated slots 26, which in particular partially extend over the entire diameter of the web structure 7.

In the example of the 14 this is not the case. There, the webs 9 of the respective web structure 7 form hexagonal web spaces 18 in the form of honeycombs. In the example of the 17 However, the web spaces 18 are designed in the form of triangular honeycombs. In both of these embodiments, several web spaces 18 are lined up along a secant with respect to a circumference of the web structure 7, the web spaces 18 being separated from one another by the respective webs 9 of the web structure 7.

In the examples of 6-9 One of the web structures 7 forms honeycomb-shaped free spaces 18, while the other of the two web structures 7 forms straight, elongated slots 26. The 6-7 show a respective view from above of the upper web structure 7, which has straight webs 9. The 8th and 9 however, show views from below of the lower web structure 7, the webs 9 of which form a hexagonal grid.

As can be seen from the coordinate systems in the 4 , 5 and 6 but also in the 22 and 23 As can be seen, said tool separation plane 11 can be understood as an XY plane, this plane dividing the insert part 6 into the two web structures 7. In the examples of 22 and 23 The two web structures 7 are each designed to be strictly symmetrical with respect to the tool parting plane 11, but not congruent. For example, you can tell from the 14 and 23 , which show the same insert part 6, that a large number of through channels 16 are formed by the web spaces 18 existing between the webs 9, which are in the flow direction 31 (see 2 ) are aligned and limited by the respective webs 9. However, it can also be seen that the lower hexagonal grid, which is formed by the webs 9 of the lower web structure 7, divides the web spaces 18, which are formed by the upper hexagonal web structure 7. Therefore, the passage area of the respective passage channels 16 is also smaller than the respective web space 18, which is formed by the upper web structure 7.

How to be good in the 22 and 23 recognizes, in these embodiments, respective webs 9 of the two web structures 7 of the respective insert part 6 are designed in such a way that these form side surfaces 17 which run coaxially to one another, namely along the flow direction 31. This direction can correspond precisely to the insertion direction 14 with which the respective one Insert part 6 is inserted into the receiving space 4 of the jet regulator 1 (compare 2 and 3 ).

5 shows further details of the stacking arrangement 13 of a total of three insert parts 6, which are in the receiving space 4 of the jet regulator 1 3 can be used. Here, the insert parts 6 are visibly identical, that is, they were manufactured using the same injection molding tool. It can also be seen that the respective upper web structures 7 of the three insert parts 6 are not aligned. The reason for this is that the three insert parts 6 are each arranged rotated relative to one another by an angle α = 30 ° about the insertion direction 14.

A similar situation is happening again 19 illustrated, whereby the right illustration shows a top view of the stacking arrangement 13 and where the angle α = 45 °. Although each of the three insert parts 6 each forms through channels 16 which have a square area as a cross section, in 19 It is easy to see that due to the relative rotation of the insert parts 6 to one another, the cross section of the stacking arrangement 13 through which water can flow unhindered is smaller and shows a triangular cross section.

As the 20 and 21 Illustrate, differently designed insert parts 6 according to the invention can also be used in a stack arrangement 13, which form different web structures 7. For example, in 20 two insert parts 6 with hexagonal web structures 7 combined with an intermediate insert part 6 with slot-shaped web structures 7.

In all stacking arrangements 13 the 18-21 However, the through channels 16, which are formed, for example, by the uppermost insert part 6, are at least partially covered by a web structure 7 of an underlying insert part 6 of the stack arrangement 13 (relative to the insert direction 14 or the flow direction 31). Especially based on the 13 It is easy to understand that such a concealment can be provided in particular by a branching point 35 of two webs, these webs 9 then belonging to one and the same web structure 7. However, it is also possible for the concealment to be formed precisely by contact points 12 or contact surfaces 32, which exist between two web structures of an insert part 6 of the stack arrangement 13. In relation to the entire stacking arrangement 13, the examples are: 13 and 18-21 the respective cross-sectional area, which is occupied by a through channel 16 of the uppermost insert part 6, cannot be completely flowed through by water in the axial direction. These configurations achieve efficient homogenization of the water jet that flows through the stack arrangement 13.

As per the 18-21 as well as 11-13 can be easily understood, the insert parts 6 are aligned with one another in the respective stack arrangement 13 by means of alignment halves 15. The alignment halves 15 engage with one another in the direction of use 14 and thus specify the relative angle of rotation α that exists between two adjacent insert parts 6. The alignment aids 15 are formed in one piece with the respective web structure 7, in the form of axial and mutually corresponding projections 21 and recesses 22.

Like in 5 or even in 12 can be clearly seen, the projections 21, which are formed on an insert part 6 of the upper and lower level 8, are aligned. The same applies to the recesses 22. This ensures that the alignment aids 15 are designed to be invariant with respect to a rotation of the insert part 6 by 180 ° about an x-axis, which lies in the respective tool separation plane 11 (= "flipping" of the insert part). . At the top insert part 6 the 12 For example, an upper and a lower alignment aid 15 is formed, which are aligned with one another with respect to the entry direction 14.

In the example of the 13 and that of 6 At least four alignment aids 15 are designed in the form of axial projections 21, which are evenly distributed along the circumference, whereby a relative rotation angle of α = 45 ° is specified. In the example of the 5 However, at least six such alignment aids 15 are already provided, whereby a relative rotation angle of α = 30 ° is specified.

Like the example of 5 shows where the three insert parts 6 are each designed identically to one another, a respective lower axial profile 23 of the insert part 6 engages there (compare 4 , 22 and 15 ) into a respective upper axial profile 24 of the underlying insert part 6. In 5 The respective projection 21 thus engages in the correspondingly designed recess 22 of the adjacent insert part 6. Through this intervention, the two insert parts 6 are positioned relative to one another at the desired angle α to one another. All of the in 5 Insert parts 6 shown were manufactured using the same injection molding tool.

Based on 15 It can be easily understood that the web structures 7 of the insert part 6 shown there are designed so symmetrically to one another that they can be converted into one another by two symmetrical transformations. For example, if the insert part 6 shown is flipped by rotating the upper web structure 7 (or the entire insert part 6) through 180° about an x-axis that lies in the tool parting plane 11, the two web structures 7 are exchanged in their respective positions . If the insert part 6 is then additionally rotated through an angle of φ = 90° around the z-axis, which is perpendicular to the tool parting plane 11, the original state is restored because the respective webs 9 then run in the original direction.

In the example of the 14 A similar transformation would be possible because the insert part 6 there, or its web structures 7, are also designed symmetrically to one another. However, in order to transfer the upper web structure 7 into the lower web structure 7, after rotation by 180° around the x-axis, it is not necessary to rotate again around the z-axis, but rather the respective grid/web structure 7 must be rotated along the Axis can be moved as shown in the upper right illustration in 14 can be understood.

Also in the example of 10 In this way, the two web structures 7 are designed symmetrically to one another. As the block arrows indicate, after rotation by 180° around the x-axis, it must first be moved along the x-axis and then along the y-axis in order to transfer the respective web structure 7 into the adjacent web structure 7.

The technical advantage of such symmetrical configurations of the web structures 7 is clear from the 5 , because it can be seen there that even if one of the insert parts 6 shown there is accidentally inserted in the wrong orientation (i.e. rotates through 180 ° around the x-axis), the desired alignment of the web structures 7 can still be achieved, namely by simple rotation of the insert part 6 by a necessary angle φ around the z-axis.

The 24 illustrates the formation of cast flags on edges of webs 9 of a web structure 7. What can be seen is a cross section along the x-axis through the two web structures 7 of an insert part 6 according to the invention, with the respective webs 9 of the upper and lower web structure 7 clearly not overlapping at all point in the z direction and are therefore separated from one another by the tool separation plane 11. It is known that casting flags 41 can form in the tool parting plane 11 if the injection molding material is between the tool parts 33, 34 (cf. 28 ) is pressed. The inventive design of the tool separating plane 11 at the level of the transition between the two web structures 7 has the advantage that the cast flags 41 are arranged evenly spaced from the two outer sides 43 of the web structures 7. A position of these cast flags 41 is therefore independent of the top-bottom orientation with which an insert part 6 is inserted or positioned for use. In 24 It can also be clearly seen that the two web structures (above and below the tool parting plane 11) each have groundbreaking, non-increasing cross sections everywhere from the tool parting plane 11. In the example shown, the cross section is constant in the respective direction (+/z direction); However, it could also be tapered, for example, since the insert part 6 could then still be removed from the mold.

A look at the 32 , which shows an insert part from the prior art, reveals, however, that such a central formation of the cast flags 41 (as in 24 ) there (in 32 ) is not possible because the tool parts 33, 34 cannot reach behind the webs, since the web structures must remain removable from the mold.

The 28 shows two tool parts 33 and 34 in the form of two tool halves of an injection molding tool with which an insert part 6 according to the invention can be produced. For this purpose, the two tool halves are moved in the demolding direction 30 shown (= z direction - cf. 29 ) moved towards each other to define a cavity and moved apart in the opposite direction to demold the injection molded insert part 6. As can be seen in the sectional view, the insert part 6 extends from the tool parting plane 11, which is the xy plane (cf. 29 ) the two tool parts 33 and 34 are separated from each other, upwards and downwards into the respective tool halves 33, 34 or into the half spaces in which these tool halves 33, 34 lie. The tool halves form corresponding recesses, which, as a negative, specify the shape of the upper or lower half of the insert part 6.

As by comparing the 29 and 30 can be seen, the lower web structure 7, which is in 28 and 29 lies below the tool parting plane 11, determined exclusively by the lower tool half 34. Because only the tool half 34 has a corresponding recess 42 in the form of grooves running in the y direction (cf. 29 ), which define the webs 9 of the lower web structure 7 of the insert part 6 running in the y direction (cf. 30 ). This can also be seen from the fact that the upper surfaces of the webs 9 of the lower web structure 7 are flush with the surface of the lower tool half 34, that is, these surfaces lie in the in 29 illustrated xy plane. During injection molding, these surfaces of the lower webs 9 are separated by the mold The flat 11 lying surface of the upper tool half 33 is only limited, which is flat in these areas. In other words, it is possible with the tool parts 33, 34 to form one of the web structures 7 without the other web structure 7 by covering the respective tool part 33, 34 with a flat plate. In this (ideal) example, the plate shows the tool parting plane 11.

Based on 31 (which shows the same situation as in 30 , where only the cut in the negative y-direction is shifted by approximately half a web distance) it can be seen that the webs 9 of the upper web structure 7, which run in the x-direction, are all above the tool parting plane 11 and therefore exclusively through the upper tool half 33 are defined. Even if this is not illustrated, it is easy to imagine that the upper tool half 33 thus has corresponding grooves that run in the x direction in order to define the webs 9 of the upper web structure 7, in particular their exact position in the xy plane. Only the (in 31 (not visible) lower web surfaces of the webs 9 of the upper web structure 7, which are aligned with the tool parting plane 11 (cf. also 22 or 23 ), are limited by the surface of the lower tool half 34 (aligned with the insert part). In other words, the webs 9 of the upper web structure 7 lie on the (in 31 hatched) surface of the lower tool half 34, which lies in the tool parting plane 11. The (imaginary) contact surfaces 32, on which the webs 9 of the upper web structure 7 intersect with the webs 9 of the lower web structure 7, are therefore all in the tool separation plane 11. The upper web structure 7, more precisely its webs 9, does not exceed the tool separation plane 11 downwards, so it does not protrude into the half-space occupied by the lower tool half 34.

33 shows an analogous situation like 31 , whereby the upper tool half 33 is now illustrated, with the longitudinal section again as in 31 runs through the center of the insert part 6. 34 shows a similar section through the upper tool half 33, but the longitudinal section is decentralized. Can be seen in 33 (as already in 31 ) also the already injection-molded insert part 6, after separating the two tool halves 33, 34 and removing the lower tool half 34.

In 34 However, only the upper tool half 34 is shown without the insert part 6, so that the view is clear of the recesses 42 in the tool half 34, which determine the shape of the webs 9 of the upper web structure 7 of the insert part 6. As can be seen, all of these recesses 42 run in the x direction; However, recesses that could define the lower web structure 7 are missing. The darkened smaller view in 34 also shows the upper tool half 33 cut at a decentralized location (compare the dotted line in the top right view), but with the insert part 6 still in the tool half; The webs 9 of the lower web structure 7, which protrude in the negative z-direction from the upper tool half 33 and run in the y-direction and are defined by the lower tool half 34 (not shown), can be clearly seen in the smaller, dark view.

In contrast to this, in 32 an example of one from the prior art, in more detail WO 2021 123065 A1 , previously known insert part shown, which forms a grating. As can be seen from the detailed view, in particular from the block arrow, the webs of the upper web structure protrude straight into the half-space that is occupied by the webs of the lower web structure. Ie, in this insert part, the two web structures (which each have webs running in the x and y directions) are not separated or separable from each other by a plane, but the web structures of the grid show an overlap (in the z direction). In 32 There is therefore no position of an xy separating plane that makes it possible to separate the two web structures from each other. In 31 However, this is precisely the xy plane, which coincides with the tool parting plane 11.

In summary, in order to simplify the production of an insert part 6, which has two web structures 7, each of which forms a plurality of webs 9, it is proposed that the insert part 6 is manufactured by a casting process in such a way that the two web structures 7 touch each other in respective contact surfaces 32, but still remain separated from each other by a tool separation plane 11. This has the advantage that the respective outer contour of the webs 9 of the respective web structure 7 can be defined exclusively with a respective tool part 33/34, without an offset of the other tool part 34/33 having a negative effect on the shape of the webs 9.

Reference symbol list

1

Aerator

2

Dismantling unit

3

Outlet unit

4

Recording room (arranged between 2 and 3)

5

Housing (surrounds 4)

6

Insert part (inserted into 4)

7

Bridge structure

8th

(imaginary) level

9

Jetty (trained by 7)

10

Tool parting line

11

Tool parting plane

12

point of contact

13

Stacking arrangement

14

(axial) insertion direction

15

Alignment aid

16

Through channel (formed by 7)

17

Bridge side surfaces (of 9)

18

space between the webs

19

inward-facing web surfaces

20

Radial plane

21

head Start

22

recess

23

lower axial profile (of 6)

24

upper axial profile (of 6)

25

injection point

26

slot

27

Injection molded part

28

Scope

29

Cross connection (between 9)

30

Demoulding direction

31

Direction of flow

32

Touch surface

33

first tool part (particularly first tool half)

34

second tool part (in particular second tool half)

35

Branch point (between 7)

36

Turning point

37

Sanitary fitting

38

O-ring

39

Front sieve

40

Flow regulator

41

Cast flags

42

Recess (in 33/34 to define 7)

43

Exterior of 7

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2021123065 A1 [0006, 0091]

Claims (24)

Insertion part (6), in particular for insertion into a receiving space (4) of a jet regulator (1), - wherein the insertion part (6) can be flowed through by water along a flow direction (31), characterized in that - the insertion part (6) consists of two Web structures (7) are composed, which are arranged in two superimposed planes (8) and which each have a plurality of webs (9), and - that the two web structures (7) are each separated from one another by a tool separating plane (11). Insert part (6). Claim 1 , - wherein the webs (9) of the upper web structure (7) intersect with the webs (9) of the lower web structure (7) at contact surfaces (32), - in particular wherein webs (9) of the same web structure (7) meet at branching points ( 35) branch, and/or - wherein at points of contact (12) of the two web structures (7), the respective webs (9) run at a crossing angle β to one another. Insert part (6). Claim 1 or 2 , - where the crossing angle β is dimensioned such that an area of a respective contact surface (32) of the crossing webs (9) in the tool parting plane (11) is at most three times the square of a width of the respective web (9), measured transversely to one Direction of the web (9) is. and/or - where the following applies to the crossing angle β: β > 20°, preferably and β ≤ 90°. Insert part (6) according to one of the preceding claims - wherein the at least two web structures (7) of the insert part (6) - are integrally connected or formed with one another and/or - are manufactured as an injection molded part (27), - In particular using two tool parts (33, 44), in particular two injection molding tool halves, which collide in the tool parting plane (11). Insert part (6) according to one of the preceding claims, - wherein the insert part (6) has at least one web structure (7), the webs (9), at least partially, running non-parallel to one another, in particular at angles of less than 90°, - preferably and thus form branching points (35). Insert part (6) according to one of the preceding claims, - wherein at least one of the two web structures (7) has webs (9) which show an S-shaped course in said plane (8), in particular with two turning points (36). Insert part (6) according to one of the preceding claims, - the two web structures (7) from which the insert part (6) is composed form different types of web spaces (18), - In particular as elongated slots (26) in an upper level (8) and as honeycomb-shaped free spaces (18) in a lower level (8). Insert part (6) according to one of claims one of the preceding claims, - wherein said tool separation plane (11) is an xy plane and divides the insert part (6) into the two web structures (7), and/or - wherein the two web structures (7) are designed, in particular strictly, symmetrically to one another with respect to the tool parting plane (11). Insert part (6) according to one of the preceding claims, wherein the two web structures (7) are designed so symmetrically to one another that the two web structures (7) are rotated by an imaginary rotation of 180 ° about an x-axis lying in the tool parting plane (11). - by rotation through an angle φ about a z-axis aligned perpendicular to the tool parting plane (11) and/or - Can be converted into one another by displacement along a y-axis lying in the tool parting plane (11) and/or along the x-axis. Insert part (6) according to the preceding claim, wherein the angle φ = 360°/N is formed as an integer division of 360°, in particular with φ = 90° or φ = 120°. Insert part (6) according to one of the preceding claims, - wherein the two planes (8) are each aligned radially or vertically with respect to the flow direction (31) and/or - wherein all web surfaces (19) of the webs (9) of each web structure (7) aligned with the tool parting plane (11) lie in a respective radial plane (20) with respect to the flow direction (31), - preferably these web surfaces (19) are planar and lie in the tool parting plane (11). Insert part (6) according to one of the preceding claims, - wherein at least one, in particular both, of the web structures (7) are attached between the webs (9). arranged, in particular hexagonal or triangular, web spaces (18) in the form of honeycombs, - preferably with several such honeycomb web spaces (18) lined up along a secant with respect to a circumference of the web structure (7) and through respective webs (9 ) are separated from each other. Insert part (6) according to one of the preceding claims, - wherein the respective webs (9) of the two web structures (7) each form side surfaces (17) which are axially aligned in an insertion direction (14) of the insert part (6) and which run coaxially to one another, and/or - that through-channels (16) are formed by web spaces (18) existing between the webs (9), which are aligned in the flow direction (31) and delimited by the webs (9), - Particularly preferably, the webs (9) of the two web structures (7) of the respective insert part (6) are arranged relative to one another in such a way that the through channels (16) of the respective insert part (6) run in a straight line and/or without twisting in the flow direction (31). . Insert part (6) according to one of the preceding claims, - Wherein both web structures (7) each have non-increasing, in particular constant or tapering, cross-sections pointing away everywhere from the tool parting plane (11). Jet regulator (1) with - a disassembly unit (2) and an outlet unit (3) and a receiving space (4) formed between them, which is surrounded by a housing (5), - at least one insert part through which water can flow in the receiving space (4). (6) is inserted, characterized in that - the at least one insert part (6) is designed according to one of the preceding claims. Jet regulator (1). Claim 15 , - wherein in the receiving space (4) at least two of the insert parts (6) are arranged one above the other in a stack arrangement (13) in an axial insertion direction (14), - preferably the at least two insert parts (6) are designed in the same way or identical to one another and /or - are arranged rotated relative to one another by an angle α about the insertion direction (14) and/or - wherein the receiving space (4) when the insert part (6) is inserted can only be flowed through through passage channels (16) which are provided by the at least one insert part ( 6) be trained. Jet regulator (1). Claim 15 or 16 , - whereby the jet regulator (1) has an insert part according to Claim 10 and - where α = φ / 2, in particular - α = 45 ° with φ = 90 ° or for example - α = 60 ° with φ = 120 °. Jet regulator (1) according to one of the Claims 15 until 17 , - wherein axially aligned in the insertion direction (14) through channels (16), which are formed by one of the insert parts (6), at least partially, through a web structure (7) of an adjacent insert part (6) of the stacking arrangement (13), in particular through a branching point (35) of two webs (9) of one of the web structures (7), relative to the insertion direction (14), are covered, and / or - wherein axially aligned in the insertion direction (14) through channels (16) from one of the insertion parts (6) are formed, in the stacking arrangement (13) meet a point of contact (12) of the two web structures (7) of an adjacent insert part (6) of the stacking arrangement (13), - in particular so that, based on the entire stacking arrangement (13), a cross-sectional area occupied by a respective through-channel (16) cannot be completely flowed through by water in the axial direction. Jet regulator (1) according to one of the Claims 15 until 18 , - wherein the at least two insert parts (6) are aligned with one another with respect to a relative rotation angle α about the insertion direction (14) by means of respective alignment aids (15), which engage with one another in the insertion direction (14), - preferably wherein the respective alignment aids (15) are formed in one piece with the respective web structure (7), particularly preferably in the form of axial and mutually corresponding projections (21) and recesses (22). Jet regulator (1) according to one of the Claims 15 until 19 , - wherein upper and lower alignment aids (15) are formed on at least one of the insert parts (6), which are aligned with one another with respect to an insertion direction (14). Jet regulator (1) according to one of the Claims 15 until 20 , - wherein at least four, in particular at least six, alignment aids (15) are formed along a circumference of one of the at least two insert parts (6), which point axially in the same direction, preferably and evenly distributed along the circumference, - in particular so that the relative angle of rotation α is at most 45°, in particular at most 30°. Jet regulator (1) according to one of the Claims 15 until 21 , - wherein each of the at least two insert parts (6) can be arranged with an identical copy of itself in a compact stacking arrangement (13), in which a lower axial profile (23) of the insert part (6) in an upper axial profile (24) of the Insert part (6) engages, wherein in such a stacking arrangement (13) the two identical insert parts (6) used are arranged rotated relative to one another by an angle α about an insertion direction (14). Jet regulator (1) according to one of the Claims 15 until 22 , - whereby the at least two insert parts (6) are all shaped identically to one another and/or have been manufactured with the same two injection molding tool halves. Method for producing an insert part (6), in particular according to one of Claims 1 until 14 and/or for insertion into a receiving space (4) of a jet regulator (1), in particular according to one of Claims 15 until 23 , - wherein the insert part (6) is produced as a cast part, in particular by means of injection molding, characterized in that - the insert part (6) is composed of two web structures (7) which are arranged in two levels (8) one above the other and which each form a plurality of webs (9), and - that a first tool part (33) is used to shape a first of the two web structures (7) during casting, while a second of the two web structures (7) only uses a second tool part (34) is formed during casting.

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