Sanitary insertion part

Abstract

The invention relates to a sanitary insertion part (1) having a splitting stage (6) with an arrangement of splitting nozzles (9), wherein a mixing stage (7) is located downstream of the splitting stage (6) in a main flow direction (4), said mixing stage being at least partially delimited by a housing wall (22) perpendicular to the main flow direction (4), wherein the mixing stage (7) has an insert (10) with flow obstacles (11). The insert (10) has two or more arrangements (12, 13) of flow obstacles (11), said arrangements being spaced apart one from another in the main flow direction (4) and serving for fine atomization and mixing of the jets emerging from the splitting nozzles (9).

Description

[0001] PC 25 1196 C July 23, 2025 Sanitary Insert The invention relates to a sanitary insert with a separation stage, in particular comprising an arrangement of separation nozzles, wherein a mixing stage is arranged downstream of the separation stage in the main flow direction, which may be limited by a housing wall transverse to the main flow direction. Such sanitary inserts are known, for example, as steel regulators in practice. Typically, such sanitary inserts are used in outlet fittings where they can serve to shape and improve the spray pattern of an emerging water jet. Usually, such sanitary inserts are inserted into a threaded nozzle, which can be connected to an outlet fitting.In practice, these sanitary inserts often consist of a pre-filter screen, a reducing stage, a separation stage, a mixing stage, and an outlet stage, arranged in this order along the main flow direction and through which fluid can flow. Sanitary inserts are also known in which one or more of these stages are missing. The reducing stage can, for example, be designed to reduce the flow rate. For instance, the reducing stage can be designed as a throttle that reduces the flow rate by a factor dependent on a pressure differential in a working area. Alternatively, the reducing stage can be designed, for example, as a flow regulator that reduces the flow rate to a value that is practically or exactly pressure-independent in a working area.Flow regulators often feature an elastic control element that deforms under operating pressure, thus changing the area of ​​a flow orifice depending on the pressure. One possible function that can be achieved with a flow separator is to fluidically decouple flow conditions upstream of the separator from those downstream. This is often accomplished by an arrangement of flow separator nozzles, which can be designed, for example, as a separator plate, a diffuser, or in other ways. Another characteristic of a flow separator is its ability to split an incoming water flow into a multitude of individual jets. bestehen.A mixing stage can follow the separation stage. This mixing stage typically incorporates flow obstructions to ensure thorough mixing and turbulence of the individual jets generated by the separation stage. An air intake can also be implemented, created by a negative pressure behind or at the separation stage, which can be used to generate an aerated jet. In practice, flow obstructions in the form of grid inserts, made of various materials, are commonly placed in the mixing stage. A final discharge stage, which can be designed as a discharge structure, can perform rectifying functions to generate a unidirectional outflow. Another function of a discharge stage might be to provide a fluidically permeable termination for the mixing stage. PC 25 1196 C 3 / 35 23.July 2025. The invention is therefore based on the objective of improving the performance and manufacturing properties of a sanitary insert of the type mentioned above. To achieve this objective, the features of claim 1 are provided according to the invention. In particular, to solve this objective in a sanitary insert, it is proposed that the mixing stage has an insert with flow obstructions, wherein the insert has at least two arrangements of flow obstructions arranged one above the other, and in particular spaced apart from each other, in the main flow direction. It is advantageous that the desired mixing of the jet and the associated improvement of the jet pattern are achieved with only one insert in the mixing stage, which, for example, simplifies the assembly of such a sanitary insert and can lead to a reduction in manufacturing costs.Alternatively or additionally, to solve the aforementioned problem, the features of the second, subordinate claim, which relates to a sanitary insert, can be provided according to the invention. In particular, to solve the aforementioned problem in a sanitary insert, it is thus proposed that the mixing stage has at least two arrangements of flow obstructions superimposed in the main flow direction, and that the flow obstructions of the at least two arrangements overlap in the main flow direction. In general, it can be said that the flow obstructions can, for example, each be rod-shaped. In particular, if the flow obstructions overlap, PC 25 1196 C 4 / 35 23 July 2025, a particularly advantageous mixing of the jets in the mixing stage can be ensured.In a particularly advantageous embodiment of the invention, the at least two arrangements of flow obstructions can be preferably rigidly connected to one another or designed as a single piece. The single-piece design of the insert can reduce the assembly time of the sanitary insert and the associated costs, and / or ensure a defined relative alignment of the arrangements. In an advantageous embodiment, the arrangements can have a flow cross-section that is at least 90%, and in particular 100%, identical. It can also be provided that the arrangements cover a flow cross-section of more than 90%, and in particular more than 100%, of a flow cross-section at an outlet stage. The flow cross-section can, for example, be determined by the circumferential contour of the aerator. The flow cross-section can vary along the main flow direction.For example, the flow cross-section at the outlet stage can be smaller than at the mixing stage and thus at the location of the flow obstructions. Therefore, the flow obstructions can cover a larger flow cross-section than the flow cross-section of the outlet stage. It is possible for jets to encounter flow obstructions multiple times before entering the downstream outlet stage. This allows for particularly fine atomization of the water jets and especially effective mixing. In a particularly advantageous embodiment, the flow obstructions within each of the at least two arrangements can be at least partially parallel or free of intersections.This can offer significant advantages in the manufacture of the flow obstruction, for example by injection molding, since a less complex tool is required for production and the flow obstruction can be easily demolded after casting. In one embodiment of the invention, the flow obstructions in a first of the at least two arrangements can be aligned in the same way, in particular parallel, to the flow obstructions in a second of the at least two arrangements, which can lead to a reduction in manufacturing costs, since in this case an identical tool, for example an injection mold, could be used to produce both arrangements. In another embodiment of the invention, the flow obstructions in a first of the at least two arrangements can be aligned at an angle, in particular perpendicularly, to the flow obstructions in a second of the at least two arrangements.This can lead to more homogeneous mixing and a more symmetrical jet pattern. In a particularly advantageous embodiment of the invention, it is proposed that at least one of the arrangements of flow obstructions has at least two regions, wherein the orientation of the flow obstructions differs from one another in at least two regions. In other words, at least one of the arrangements described here can contain two or more regions with flow obstructions oriented differently across the regions, wherein the different orientation of the flow obstructions can be determined by a direction in which the flow obstructions project from the support.This allows for a particularly advantageous coverage of the flow cross-section with flow obstructions, as a larger number of flow obstructions can be accommodated within a single flow cross-section. Especially in combination with a further arrangement spaced apart from the arrangement with flow obstructions in different areas, a particularly advantageous atomization and mixing of the jets can be achieved. In a further embodiment, it can be provided that the flow obstructions in a second area of ​​the at least two areas are oriented transversely to the flow obstructions in the first area of ​​the at least two areas. Flow obstructions arranged transversely to each other allow for a particularly advantageous mixing of the jets. In particular, it can be provided that the orientation of the flow obstructions between two of the arrangements forms an angle.This is particularly advantageous when dealing with adjacent arrangements. In this way, advantageous coverage of the flow cross-section by flow obstructions can be achieved, especially if the angle between the arrangements is 90°. It can also be provided that the orientation of the flow obstructions between two areas includes an angle. Such an arrangement further contributes to a particularly high coverage of the flow cross-section with flow obstructions and thus also to advantageous mixing of the jets, especially if the angle between the areas is 90°. PC 25 1196 C 7 / 35 July 23, 2025. In a particularly advantageous embodiment of the invention, it can be provided that the at least two arrangements are formed on a common support. This ensures that the orientation of the flow obstructions relative to each other cannot change when inserted into the sanitary insert.This prevents subsequent changes to the fluid paths within the mixing element, for example during assembly. In one embodiment of the invention, the support for the insert can be designed as a flat surface, particularly a wall-like structure. A flat or wall-like support is particularly well suited for arranging flow obstructions on the insert. Here, the support can be designed to be free of cavities, especially at the points where the flow obstructions attach. In one embodiment of the invention, the support for the insert can have at least one pressure equalization recess, particularly a pressure equalization opening. By using a flat or wall-like support, the mixing stage in the area of ​​the insert can be divided into sub-chambers, which can affect the jet cross-section.A pressure equalization opening allows for the creation of a more rounded jet cross-section by equalizing the pressure conditions in both sub-chambers through the pressure equalization recess. In one embodiment of the invention, the at least one pressure equalization recess can be arranged, at least partially, in the area of ​​flow obstructions. It is particularly advantageous if the at least one pressure equalization recess is arranged at the level of the flow obstructions. This enables a particularly advantageous fluidic exchange between the two sub-chambers formed by the support. The pressure equalization recess can, for example, be open or closed in the circumferential direction (then as a pressure equalization opening).In a further embodiment of the invention, the at least one pressure equalization recess may allow a transverse flow (of water, optionally enriched with air) in the area of ​​the insert. The flow conditions in the compartments can be particularly well balanced if the at least one pressure equalization opening allows the transverse flow of water between the compartments. Particularly with a round design of the sanitary insert, the transverse flow can lead to a return to a desired round cross-sectional shape of the jet. In a particularly advantageous embodiment of the invention, the insert may have one or more pressure equalization recesses. The advantage here is that pressure differences that could impair the jet cross-section can be compensated for.In a further embodiment of the invention, it can be provided that the at least one pressure equalization recess, in particular a pressure equalization opening, is bounded on one side by the inside of the housing wall. A pressure equalization opening or recess arranged in an edge region of the support, in particular on the inside of the housing wall, can be particularly well suited to ensuring pressure equalization in the mixing stage on both sides of the support. To solve the aforementioned problem, the invention alternatively or additionally proposes, in the case of a sanitary insert, the features of the third dependent claim. In particular, to solve the aforementioned problem in the case of a sanitary insert of the type described above, it is proposed according to the invention that at least some of the flow obstructions have a non-circular cross-section.It is particularly advantageous if the non-circular cross-section has a greater extent in the direction in which the sanitary insert can be inserted into a sanitary fitting than perpendicular to this direction, or if the cross-section is elliptical or oval. This also ensures a larger coverage of the flow cross-section, which can have a beneficial effect on the atomization of the jets and the mixing. In an advantageous embodiment of the invention, at least one of the arrangements may have an outer ring. The outer ring may be circumferential. It may also be provided that two or more arrangements have a circumferential outer ring, and the outer rings may be connected to one another. The outer ring may serve to stabilize the arrangements of flow obstructions.Furthermore, it can be advantageous for the outer ring or outer rings to serve as supports for the flow element against the inner wall of the housing. Alternatively or additionally, the invention proposes the features of the fourth independent claim to solve the aforementioned problem in a sanitary insert. In particular, to solve the aforementioned problem in a sanitary insert of the invention described above, it is proposed that at least two arrangements of flow obstructions, preferably on one, for example the aforementioned, insert, be movably arranged relative to the other. For example, the arrangement that is downstream of the first arrangement in the main flow direction (PC 25 1196 C 10 / 35, July 23, 2025) can be attached to a common support by means of a hinge.This offers the advantage, among others, that the flow restrictions of the second arrangement do not have to be parallel to those of the first arrangement, but can, for example, also be orthogonal, without having to accept disadvantages regarding demoldability, for example, from an injection mold. The orthogonal arrangement of a second arrangement of flow restrictions also offers the advantage that, with a reduced insert height, good mixing of the jet in the mixing stage can be achieved. It is particularly advantageous if the insert has an alignment aid that ensures a defined orientation of the insert relative to the arrangement of the separating nozzles. This eliminates the need to check the arrangement of the flow restrictions after insertion. Such an alignment aid can be implemented, for example, using a Hirth coupling.Since the arrangement of the flow obstructions is of great importance for the mixing of the jet and the subsequent jet pattern, a consistent quality of the jet pattern can be achieved in this way. In an advantageous embodiment of the invention, an alignment aid, for example the one described above, of the insert can interact with a counter-alignment aid on the dispersing stage and / or on the housing wall. This further simplifies the assembly of the sanitary insert. In a particularly advantageous embodiment of the invention, it can be provided that the flow obstructions of an upstream arrangement are aligned in the operating position (PC 25 1196 C 11 / 35 July 23, 2025) such that a jet from each dispersing nozzle strikes at least one flow obstruction of the upstream arrangement.Precise positioning of each jet exiting the dispersing nozzles onto a flow obstruction can ensure optimal atomization of the jets in the mixing stage. In one embodiment of the invention, the housing wall can form a discharge structure at its downstream end, which delimits the mixing stage downstream. Such a housing wall design offers advantages during assembly, as it reduces the overall number of parts required. Furthermore, such a housing wall can be manufactured economically, for example, by injection molding. In an advantageous embodiment of the invention, the insert can rest on the housing wall, particularly on one of the discharge structures. This allows for better absorption of forces acting on the flow obstruction.Additionally, the need for further structures to support the flow obstruction can be avoided. In an advantageous embodiment of the invention, the housing wall and the disassembly stage can be aligned with each other by a rotationally fixed connection. Such a connection can effectively prevent the disassembly stage from twisting relative to the housing. To prevent unintentional twisting of the insert, for example during assembly of the insert part, an embodiment of the invention can provide that a precision alignment aid formed on the housing wall forms a catch funnel for one or the PC 25 1196 C 12 / 35 23 July 2025 alignment aid of the insert.Furthermore, the disassembly stage can be designed to engage in a catch funnel, for example, the catch funnel described above, or a counter-alignment aid, for example, a counter-alignment aid as described above, which can further secure the positions of the disassembly stage and the insert against unintentional rotation. This could also facilitate the assembly of the insert. In an advantageous embodiment of the invention, the disassembly stage can be fixed to the housing wall with a snap connection. This can ensure a secure and durable connection between the disassembly stage and the housing and can also enable simple and quick assembly of the sanitary insert.In an advantageous embodiment of the invention, the disassembly stage may be provided with a guide aid, wherein the guide aid engages a catch funnel, for example, the one described above, and a counter-alignment aid. This ensures a rotationally secure connection between the disassembly stage and the housing. It also ensures that the disassembly stage assumes a desired orientation relative to the housing, and in particular to the outlet structure and an insert placed in the housing, during the assembly of the sanitary insert. In a particularly advantageous embodiment of the invention, the housing may be provided with a ventilation passage. Such a ventilation passage can be used to ventilate the interior, in particular the mixing stage, of the sanitary insert. This enables the generation of an aerated jet.Aerated jets can be perceived as particularly soft and full. In an advantageous embodiment of the invention, the guide aid may have ventilation openings. In the proposed sanitary insert, these ventilation openings in the guide aid of the disassembly stage can, when installed, create a connection between the ventilation passage of the housing and the mixing stage. Thus, even when using a guide aid, the mixing stage can be ventilated, which may be necessary for generating an aerated jet. In a further embodiment of the invention, a gap may be formed between the support of the insert and the inside of the housing wall, allowing a transverse flow, particularly of water. A gap may also be provided between the flow obstructions and the inside of the housing wall.Such a gap can allow cross-flow between the sub-chambers in the area of ​​the insert. This cross-flow can enable pressure equalization between the two sub-chambers, which can have a positive effect on jet shaping. In general, it can be said that by using a mixing stage downstream of a dispersal stage in the main flow direction, with an insert, in particular an insert as previously described or subsequently claimed, wherein the insert has at least two arrangements of superimposed flow obstructions, it is possible, on the one hand, to ensure that the mixing stage provides advantageous mixing of the jets exiting the dispersal nozzles, for example, by arranging the insert and the flow obstructions located thereon in such a way that the PC 25 1196 C 14 / 35 23.July 2025. The jets from the disassembly nozzles directly encounter a flow obstruction, and on the other hand, the invention enables simple assembly of the sanitary insert. In summary, potential advantages of the invention include, among others, improved jet shaping, jet comfort, and the jet pattern. This is particularly addressed for round jet shapes by the present invention. Furthermore, an advantage lies in improving, and in particular simplifying, the manufacturing and assembly of such sanitary inserts, as well as reducing manufacturing and assembly costs. This is made possible by the following aspects of the invention: 1. Improved mixing and atomization of the jets exiting the disassembly nozzles: In sanitary inserts commonly used in practice, a one-piece grid or sieve is frequently employed as a flow obstruction in the mixing stage.In the present invention, all embodiments have in common that at least two superimposed arrangements of flow obstructions are implemented. This can have an advantageous effect on the spray pattern. Furthermore, when assembling a sanitary insert as described above and claimed below, the need for subsequent checks of the alignment of the insert and the flow obstructions arranged thereon can be avoided, particularly with regard to the positioning relative to the separating nozzles, which can have an advantageous effect on assembly costs. This is especially the case if the insert is provided with an alignment aid, and the separating stage and / or the housing with the discharge stage contained therein is implemented with an alignment aid corresponding to the PC 25 1196 C 15 / 35 July 23, 2025.This prevents an unfavorable positioning of the insert and its associated flow obstructions in relation to the separating nozzles and / or the discharge structure. Such an unfavorable positioning could otherwise affect the jet quality. 2. Simplified manufacturing and demolding of the insert with flow obstructions: The production of the individual parts of a sanitary insert, as described above or otherwise known from practice, is usually carried out using cost-effective methods, especially injection molding. In injection molding, the ease of demolding the workpieces from the injection molds plays a particularly important role. The production of parts with flow obstructions, such as the insert described above and subsequently claimed, can be complicated, especially if several stacked arrangements of flow obstructions are to be implemented.By arranging the flow restrictions in parallel, problems during demolding from an injection mold can be avoided. In an insert with flow restrictions arranged orthogonally to each other, demoldability can be ensured by the mobility of one of the arrangements, particularly the lower arrangement. This allows the mold for the second arrangement to be positioned far enough away from the mold for the first arrangement that the molds can be easily detached from the insert. The desired spacing of the arrangements for the mixing stage can be achieved during assembly by moving the second, movable arrangement. This allows for the production of an insert with mutually orthogonal arrangements of flow restrictions, which are advantageous for thorough mixing. PC 25 1196 C 16 / 35 July 23, 2025Simplified assembly: By using a single insert with at least two arrangements of flow restrictors, a mixing ratio advantageous for the spray pattern can be achieved. A comparable mixing ratio in conventional sanitary inserts is only achieved through the use of multiple screens or grids as flow restrictors. Compared to the invention presented here, this results in increased assembly effort and associated costs. Furthermore, it can be assumed that the use of inserts with flow restrictors, such as those described above and claimed below, will result in sanitary inserts with a lower overall height compared to sanitary inserts with multiple, structurally separate flow restrictors. Such lower heights would be advantageous, for example, when used as aerators in very shallow outlet fittings.The invention will now be described in more detail with reference to an exemplary embodiment, but is not limited to this embodiment. Further exemplary embodiments result from combining the features of one or more claims with each other and / or with one or more features of the exemplary embodiment. Fig. 1 shows a first variant of the sanitary insertion unit in a three-dimensional view, Fig. 2 the sanitary insertion unit from Fig. 1 in a three-dimensional view with a partial section, and Fig. 3 an axial section through a variant of the sanitary insertion unit of an A according to the invention. usführungsbeispiels,Fig. 4 shows an axial section through the sanitary insertion unit PC 25 1196 C 17 / 35, July 23, 2025, from Fig. 3 to illustrate a collecting funnel; Fig. 5 shows an exploded view of a variant of the sanitary insertion unit of an embodiment according to the invention; Fig. 6 shows a three-dimensional view of an insulated insert with flow obstructions and a movable arrangement; Fig. 7 shows a three-dimensional view of an insulated insert with flow obstructions and various areas with flow obstructions; Fig. 8 shows the insulated lowest arrangement of flow obstructions from Fig. 7; Fig. 9 shows an axial section through an insert with flow obstructions and rings; and Fig. 10 shows an axial section through an insert with flow obstructions and rings, connected via the rings. The figures are described jointly below, where expedient.Structurally and / or functionally similar or identical components and functional units are designated with matching reference numerals and are not described separately. The descriptions therefore apply accordingly to all figures unless otherwise stated. Figure 1 shows a first variant of a sanitary insert designated as 1. The insert 1 is enclosed by a housing 2 and equipped with a front screen 3, which is enclosed by a ring 21. In the main flow direction 4, the insert 1 has, in a manner known per se, a reducing stage 5, as well as downstream a separation stage 6, a mixing stage 7, and a discharge stage 8. The housing 2 of the sanitary insert 1 can, for example, be made of an injection-moldable plastic. Figure 2 shows the sanitary insert from Figure 1.Downstream of the separation stage 6 with the separation nozzles 9, which is inserted into a housing 2, in the main flow direction 4, is the mixing stage 7 with the insert 10 contained therein and the attached arrangements 12, 13, 14 of flow obstructions 11. Downstream of the mixing stage 7 in the main flow direction 4 is the outlet stage 8, wherein, in the embodiment shown here, the outlet structure 16 is formed as part of the housing 2 and the mixing stage is fluidically permeable at the bottom. A water jet entering the sanitary insert 1 in the main flow direction 4 is cleaned of coarse particles by the pre-filter screen 3 and flows into the reduction stage 5, where, for example, the inlet pressure or the flow rate is reduced. The water then flows into the separating stage 6 and the separating nozzles 9 located therein, which break the jet into individual jets. The separating nozzles 9 are designed to be straight.The emerging individual jets thus enter the mixing stage 7 where they encounter flow obstructions 11 arranged on an insert 10. In this embodiment, the reduction stage 5 and the separation stage 6 are connected to the housing 2 by a snap connection 20 to prevent rotation. PC 25 1196 C 19 / 35 July 23, 2025. In the embodiment, an insert 10 is shown which has three arrangements 12, 13, 14 of flow obstructions. Upon impact with the flow obstructions 11 in the mixing stage 7, the individual jets are finely atomized and the water is thoroughly mixed. Aeration can also occur here. Downstream of the mixing stage 7 is the outlet stage 8, which can function as a flow straightener. In the embodiment shown here, the outlet stage 8 is implemented by an outlet structure 16, which is part of the housing 2.In further embodiments, the discharge stage 8 can be implemented by a separate discharge structure 16, which is connected to the housing 2, for example by being inserted into the housing 2. It can also be seen that, as proposed according to the invention, each jet exiting a separation nozzle 9 encounters a flow obstruction 11 of the insert 10. This is also evident from Figure 5. Deep or direct penetration of the exiting individual jets into the mixing stage 7 can thus be prevented. The insert 10 located in the mixing stage 7 has a support 15 in the center, on which the flow obstructions 11 are arranged. In this embodiment, the flow obstructions 11 are attached to the support 15 in three arrangements 12, 13, 14. The arrangements are mounted one above the other on the support 15.Arrangements 12 and 14 cover a congruent flow cross-section 25, while arrangement 13 is offset from the aforementioned. The spacing of the individual flow obstructions 11 is PC 25 1196 C 20 / 35 July 23, 2025, at least large enough that no points of contact between the individual flow obstructions 11 occur. In the exemplary embodiment, the support 15 is designed as a wall. Such a wall-like support can divide the mixing stage 7 in the area of ​​the insert 10 into sub-chambers. In the exemplary embodiment, a pressure equalization opening 28 (as a pressure equalization recess) is provided for fluidic equalization of the sub-chambers. In further exemplary embodiments, a larger number of pressure equalization openings 28 can also be provided. The pressure equalization opening can enable fluidic exchange on both sides of the wall-like support.In the embodiments shown in Figures 2, 3, and 5, the flow restrictors are arranged parallel and without crossing. The congruent positioning of the arrangements 12 and 13, as well as the offset positioning of the arrangement 14, ensures particularly effective mixing of the incoming water. This allows for exceptionally fine atomization of the jets exiting the separating nozzles 9. In the embodiment shown in Figures 1–5, a ventilation passage 34 is provided on the housing 2 of the sanitary insert 1, which can be used to aerate the mixing stage 7. Figure 6 shows an embodiment of an insert with two arrangements 12 and 23 of flow restrictors 11. Other embodiments are also implemented with more than three arrangements of flow restrictors 11.The flow cross-section 25 of the main flow direction 4 in the mixing stage 7 is limited by the housing wall 22, as shown in the exemplary embodiments and as can be seen in Figures 2, 3, and 4. Furthermore, Figure 2 shows that the insert 10 is equipped with an alignment aid 17. The alignment aid 17 rests against the housing wall 22 and an integrated counter-alignment aid 19. The counter-alignment aid 19 of the housing wall 22 can be part of a collection funnel 18. In further exemplary embodiments, a counter-alignment aid 19 can additionally or alternatively be attached to the separation stage 6. Below the insert 10 is the discharge stage 8 with the discharge structure 16.Figure 3, which shows an axial cross-section of an embodiment of the sanitary insert 1, reveals that a collection funnel 18 is formed on the housing wall 22 within the section of housing 2 that forms the mixing stage 7. The snap connection 20 is located in the main flow direction 4 above the separation stage 6. This snap connection 20 securely connects the separation stage 6 to the housing 2 and the outlet stage contained therein. A further counter-alignment aid 19 is implemented here as part of a guide aid 26, which engages the insert 10 from above and ensures that the position of the insert 10 is maintained in the assembled state of the sanitary insert. This can also be seen in Figure 3. PC 25 1196 C 22 / 35 July 23, 2025. In this embodiment, the guide aid 26 engages the collection funnel 18 from above and thus contributes to a Proper positioning of dismantling stage 6 to discharge stage 8.In this embodiment, the guide aid 26 is equipped with ventilation openings 27, which can lead to additional aeration of the fluid in the mixing stage. This prevents the insert 10 and thus the flow obstructions 11 relative to the separation nozzles 9 of the separation stage 6, as well as the insert 10 and the flow obstructions 11 located thereon relative to the outlet structure 16, from twisting, which would be detrimental to the mixing of the incoming water in the mixing stage 7 or to the jet shaping on the outlet side. The collection funnel 18 is particularly well shown in Figure 4, as the insert is not depicted there. This does not represent an embodiment, but merely serves to better illustrate the collection funnel 18 and the counter-alignment aids 19.It can also be seen here that at the downward end of the catch funnel 18 in the main flow direction 4, a further counter-alignment aid 19 is formed in addition to the counter-alignment aid of the guide aid 26. The use of counter-alignment aids 19 on the guide aid 26 of the disassembly stage and the catch funnel 18 of the housing 2 is particularly advantageous in order to protect the insert 10 and the flow obstructions 11 located thereon against rotation relative to the disassembly stage 6 and the discharge stage 8 during assembly in the assembled state. PC 25 1196 C 23 / 35 July 23, 2025. In the exploded view in Figure 5, a guide aid 26 attached to the disassembly stage 6 can also be seen. In the embodiment shown in Figure 2, the insert 10 is spaced apart from the outlet structure by the counter-alignment aid 19 as part of the catch funnel 18 and the housing wall 22.In further embodiments, the carrier 15 of the insert 10 rests on the outlet structure 16. Figure 6 shows another embodiment of an insert 10. Here, two arrangements 12 and 23 of flow obstructions 11 are located on a carrier 15. The arrangements 12 and 23 have flow obstructions 11 that are orthogonal to each other. This can also result in advantageous, fine atomization of the jets, with a reduced overall height compared to the previous embodiments of the insert 10. This can be advantageous for a reduced-height design of a sanitary insert 1, while simultaneously maintaining the previously described advantages regarding the mixing of the fluid in the mixing stage 7. To improve the demolding of the insert from a tool, for example, an injection mold, the movable second arrangement 23 is connected to the carrier 15 at a hinge 24.When inserted into the housing 2 of the sanitary insert 1, the movable second arrangement 23 is moved upwards in a folding motion and, in the assembled state, has a similar distance to the first arrangement 12 as the arrangements in the previous embodiments. In the embodiment, the flow obstructions 11 are realized with a circular cross-section 29. In other embodiments, non-circular shapes are also realized. In particular, flow obstructions 11 with an oval or elliptical cross-section. Figure 7 shows an insert 10 with three arrangements 12, 13, 14 of flow obstructions. The arrangements 12, 13, 14 are attached to a support 15. The arrangement 14, which lies furthest towards the outlet stage 8 in the main flow direction 4, has a first area 30 and a second area 31 with different orientations of flow obstructions 11.The flow restrictions 11 in the two sections 30 and 31 form an angle of 90° to each other. This improves mixing, particularly in areas near the housing wall, as a larger area of ​​the flow cross-section 25 can be covered by flow restrictions 11. Figure 8 shows an isolated view of the arrangement 14, which is located closest to the outlet stage 8 in the main flow direction 4. The exemplary embodiment shows a total of four sections 30 and 31 in which the orientation of the flow restrictions differs. The flow restrictions 11 of the arrangement 14 shown in the exemplary embodiment are connected to each other via the flow restrictions 11 of the next arrangement 13, as shown in Figure 7. The arrangement 14 can also be combined with others. The flow restrictions 11 in the exemplary embodiment are implemented with a non-circular cross-section 29.In further embodiments, flow obstructions 11 with a round cross-section 29 can also be implemented. PC 25 1196 C 25 / 35 July 23, 2025. In further embodiments, an arrangement 14 other than the third, in particular the first arrangement 12, contains areas 30 and 31 with different orientations of flow obstructions 11. The embodiment in Figure 7 is implemented with three arrangements 12, 13, and 14 of flow obstructions. However, embodiments with fewer than three arrangements are also possible. Furthermore, embodiments with more than three arrangements can also be implemented. Further embodiments can also realize angles other than 90° between the flow obstructions 11 in areas 30 and 31. Figure 9 shows an insert 10 with two arrangements 12 and 13 of flow obstructions 11. In the exemplary embodiment, the arrangements 12 and 13 are connected via a support 15.The two arrangements 12 and 13 are each enclosed by a ring 32. Further embodiments are realized with only one arrangement 12 of flow obstructions 11. The ring(s) 32 can be interrupted in other examples. It is also possible for the rings to be connected to one another. In the case of connected rings, a support 15 can be omitted. In this embodiment, the insert 10 can be supported on the housing wall 22 by one of the rings 32. It is also possible for the ring 32 to rest on the outlet structure 16. Figure 10 shows an embodiment of an insert 10 with two arrangements 12 and 13 of flow obstructions 11. The flow obstructions 11 of an arrangement 12 and 13 are each connected by a ring 32. The two rings 32 are connected to one another by a connection 33.In the illustrated embodiment, a support 15 to which the flow obstructions are attached can be omitted. In other embodiments, a support 15 may be included. The illustrations according to Figures 1 to 10 show that the embodiments described so far each represent a sanitary insert 1 with a round basic shape. In further embodiments, other basic shapes, in particular cuboid or rectangular basic shapes, are also implemented. / List of reference numerals.

[0002] PC 25 1196 C 27 / 35 July 23, 2025 Reference List 1 Sanitary Insert 2 Housing 3 Pre-screen 4 Main Flow Direction 5 Reducing Stage 6 Separating Stage 7 Mixing Stage 8 Outlet Stage 9 Separating Nozzle 10 Insert 11 Flow Obstruction 12 (First) Arrangement 13 (Second) Arrangement 14 (Third) Arrangement 15 Support 16 Outlet Structure 17 Alignment Aid 18 Catching Funnel 19 Counter-alignment Aid 20 Snap Connection 21 Ring 22 Housing Wall 23 Movable (Second) Arrangement 24 Hinged Transition 25 Flow Cross-Section 26 Guide Aid 27 Ventilation Opening 28 Pressure Equalization Opening 29 Cross-Section (of the Flow Obstruction) 30 (First) Section 31 (Second) Section 32 Ring 33 Connection PC 25 1196 C 28 / 35 July 23, 2025 34 Ventilation passage / requirements

Claims

PC 25 1196 C 29 / 35 July 23, 2025 Claims 1. Sanitary insert (1) with a separating stage (6), in particular comprising an arrangement of separating nozzles (9), wherein a mixing stage (7) is arranged downstream of the separating stage (6) in a main flow direction (4), which is bounded by a housing wall (22) transverse to the main flow direction, characterized in that the mixing stage (7) comprises an insert (10) with flow obstructions (11), wherein the insert (10) comprises at least two arrangements (12, 14) of flow obstructions (11) arranged one above the other, in particular spaced apart from each other, in the main flow direction (4). 2.Sanitary insert (1), in particular according to claim 1, with a separating stage (6), in particular comprising an arrangement of separating nozzles (9), wherein a mixing stage (7) is arranged downstream of the separating stage (6) in a main flow direction (4), characterized in that the mixing stage has at least two arrangements (12, 14) of flow obstructions (11) superimposed in the main flow direction (4), and that the flow obstructions (11) of the at least two arrangements (12, 14) overlap in the main flow direction (4).

3. Sanitary insert (1) according to one of the preceding claims, characterized in that the at least two arrangements (12, 14) of flow obstructions (11) are preferably rigidly connected to one another or formed in one piece. 4.Sanitary insert (1) according to one of the preceding claims, characterized in that the arrangements (12, 14) cover a flow cross-section (25) that is at least 90%, in particular 100%, identical, and / or that the arrangements cover a flow cross-section (25) of more than 90%, in particular more than 100%, of a flow cross-section at an outlet stage (8).

5. Sanitary insert (1) according to one of the preceding claims, characterized in that the flow obstructions (11) within each of the at least two arrangements (12, 14) are at least partially parallel or non-intersecting.

6. Sanitary insert (1) according to one of the preceding claims, characterized in that the flow obstructions (11) in a first of the at least two arrangements (12, 14) are aligned in the same way, in particular parallel, to the flow obstructions (11) in a second of the at least two arrangements (12, 14). 7.Sanitary insert (1) according to one of the preceding claims, characterized in that the flow obstructions (11) in a first of the at least two arrangements (12, 13, 14) are oriented in a crossed manner, in particular perpendicularly, to the flow obstructions (11) in a second of the at least two arrangements (12, 13, 14).

8. Sanitary insert (1) according to one of the preceding claims, characterized in that the flow obstructions (11) are arranged in at least one arrangement (12, 13, 14), preferably in the at least two arrangements (12, 13, 14), wherein at least one arrangement (12, 13, 14) has at least two regions (30, 31), wherein the orientation of the flow obstructions (11) in the at least two regions (30, 31) differs from one another.

9. Sanitary insert (1) according to one of the preceding claims, characterized in that the flow obstructions (11) are located in a second area (31) of the PC 25 1196 C 31 / 35 23.July 2025 at least two areas (30, 31) are oriented transversely, in particular orthogonally, to the flow obstructions (11) in a first area (30) of the at least areas (30, 31).

10. Sanitary insert (1) according to one of the preceding claims, characterized in that an orientation, in particular the orientation, of the flow obstructions (11) between two, in particular adjacent, of the at least two arrangements (12, 13, 14) includes an angle, in particular an angle of 90° and / or that an orientation, in particular the orientation, of the flow obstructions (11) between two, in particular adjacent, areas (30, 31) of the at least two arrangements (12, 13, 14) includes an angle, in particular an angle of 90°.

11. Sanitary insert (1) according to one of the preceding claims, characterized in that the at least two arrangements (12, 13, 14) are formed on a common support (15).12.Sanitary insert (1) characterized in that the support (15) of the insert (10) is designed as a flat surface, in particular as a wall.

13. Sanitary insert (1) according to one of the preceding claims, characterized in that the support (15) of the insert (10) has at least one pressure equalization recess, in particular a pressure equalization opening (28).

14. Sanitary insert (1) according to one of the preceding claims, characterized in that the at least one pressure equalization recess, in particular pressure equalization opening (28), is arranged at least partially in the area and / or at the level of the flow obstructions (11). PC 25 1196 C 32 / 35 23 July 2025 15. Sanitary insert (1) according to one of the preceding claims, characterized in that the at least one pressure equalization recess, in particular pressure equalization opening (28), allows a transverse flow, in particular of water, in the area of ​​the insert (10). 16.Sanitary insert (1) according to one of the preceding claims, characterized in that the at least one pressure equalization recess, in particular pressure equalization opening (28), is bounded on one side by the inside of the housing wall (22).

17. Sanitary insert (1) according to the preamble of claim 1 or 2 or according to one of the preceding claims, characterized in that at least some of the flow obstructions (11) have a non-circular cross-section, in particular wherein the non-circular cross-section has a greater extent in a direction in which the sanitary insert (1) can be inserted into a sanitary fitting than transversely to this direction and / or wherein the cross-section is elliptical or oval. 18.Sanitary insert (1) according to one of the preceding claims, characterized in that at least one arrangement (12) of flow elements (10) has a preferably circumferential outer ring (32), in particular wherein two outer rings of adjacent arrangements are connected to one another.

19. Sanitary insert (1) according to the preamble of claim 1 or 2 or according to one of the preceding claims, characterized in that at least two arrangements (12, 13, 14) are movably configured relative to one another, in particular by connection with a hinged joint (24) between the second movable arrangement (23) and the support (15). PC 25 1196 C 33 / 35 July 23, 2025 20. Sanitary insert (1) according to one of the preceding claims, characterized in that the insert (10) has an alignment aid (17) which effects a defined alignment of the insert with respect to the arrangement of the dispersing nozzles (9). 21.Sanitary insert (1) according to one of the preceding claims, characterized in that one or the alignment aid (17) of the insert cooperates with a counter-alignment aid (19) on the disassembly stage (6) and / or on the housing wall (22) and / or that the flow obstructions (11) of an upstream arrangement (12) are aligned in the operating position such that a jet of each disassembly nozzle (9) is directed onto at least one flow obstruction (11) of the upstream arrangement (12). rifft.

22. Sanitary insert (1) according to one of the preceding claims, characterized in that the housing wall (22) forms an outlet structure (16) at its downstream end, which limits the mixing stage (7) downstream, and / or that the insert (10) rests on the housing wall (22), in particular on one or the outlet structure (16).

23. Sanitary insert (1) according to one of the preceding claims, characterized in that the housing wall (22) and the separation stage (6) are aligned with each other by a rotationally fixed connection, and / or that a counter-alignment aid (19) formed on the housing wall (22) forms a catch funnel (18) for one or the alignment aid (17) of the insert.

24. Sanitary insert (1) according to one of the preceding claims, characterized in that the disassembly stage (6) engages in the or a catch funnel (18) of the or a counter-alignment aid (19) and / or that the PC 25 1196 C 34 / 35 23.July 2025 Disassembly stage (6) is fixed to the housing wall (22) by a snap connection (20).

25. Sanitary insert (1) according to one of the preceding claims, characterized in that the disassembly stage (6) has a guide aid (26), wherein the guide aid (26) engages in the or a catch funnel (18) of a counter-alignment aid (19).

26. Sanitary insert (1) according to one of the preceding claims, characterized in that the housing (2) has a ventilation passage (34).

27. Sanitary insert (1) according to one of the preceding claims, characterized in that the guide aid has ventilation openings (27). 28.Sanitary insert (1) according to one of the preceding claims, characterized in that a gap is formed between the support (15) of the insert (10) and the inside of the housing wall (22) and / or that a gap is formed between the flow obstructions (11) and the inside of the housing wall (22), wherein the gap allows a transverse flow, in particular of water. / Summary.

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