EP4101998A1 - Sanitary built-in part and series for a sanitary built-in part - Google Patents

Abstract

The invention relates to a built-in sanitary part (1) with at least one flow-regulating functional unit (2) and a diffuser (4) arranged downstream of the flow-regulating functional unit (2) in the direction of flow (3), the diffuser (4) having a diffuser space (5). , the diffuser space (5) being partially delimited by an impact surface (6) which deflects water flowing into the diffuser space (5) in a radial direction towards a plurality of outlet openings (7), with a drainage slope (8th ) is arranged, which can drain off the impact surface (6) and the water running off it in the use position in the direction of the outlet openings (7).

Description

The invention relates to a sanitary built-in part, with at least one flow-determining functional unit and a diffuser arranged downstream of the flow-determining functional unit in the direction of flow, the diffuser having a diffuser space, the diffuser space being partially delimited by an impact surface which deflects the water flowing into the diffuser space in a lateral direction deflects, the diffuser chamber having a plurality of outlet openings.

The invention further relates to a series with at least two variants of a sanitary built-in part.

The object of the invention is to provide a built-in sanitary part of the type mentioned at the outset with improved performance characteristics.

This object is achieved according to the invention by a built-in sanitary part with the features of claim 1 and/or claim 2 and/or by a series with the features of the subordinate claim directed to a series.

In particular, a sanitary built-in part of the type mentioned is proposed according to the invention to solve the problem, which is characterized in that the impact surface is followed by a drainage slope which, in the position of use, allows water that hits the impact surface and runs off it to run off in the direction of the outlet openings. This has the advantage that the sanitary fitting can also be used at relatively low flow rates (such as at most or exactly 1 gallon per minute (gpm)), to form a beautifully shaped and/or aerated jet of water.

With such low flow rates, the water jet can no longer be adequately aerated with built-in sanitary parts of a previously known type, so that the jet pattern of an outflowing water jet has an uneven effect. In comparison to previously known sanitary built-in parts of the type mentioned at the outset, it is also possible to better prevent the development of noise, which is often perceived as annoying, since turbulence within the built-in part, in particular within the diffuser space and/or downstream of the outlet openings in the direction of flow, is lower than with previously known built-in parts.

In particular, the invention also proposes a sanitary built-in part of the type mentioned at the outset to solve the problem, which is characterized in that the outlet openings break through a peripheral side wall of the diffuser, that the outlet openings each have a width b, that two adjacent outlet openings are each at a distance a from one another are spaced apart and that a ratio b/a is less than 0.41. It has proven to be particularly advantageous to keep the b/a ratio below 0.41 for built-in parts with lower flow rates (low flow rate classes), since values above this result in a poorly aerated and/or an ugly water jet. This ratio can therefore be used to ensure that the water jet is adequately aerated, particularly at lower flow rates, such as 1 gpm.

The two independent solutions described above can also be combined with one another to form an advantageous embodiment.

Advantageous configurations of the invention are described below, which can optionally be combined with the characteristics of claim 1 and/or 2 alone or in combination with the characteristics of other configurations.

According to an advantageous development, it can be provided that the diffuser chamber has at least one inlet opening, with a water jet entering through the at least one inlet opening in the position of use impinging on the impact surface and being divided. Thus, a good aeration of the water jet is possible even with a low flow rate. In particular, several inlet openings can also be provided, which are preferably all aligned with the impact surface. In particular, the at least one inlet opening can be formed through the functional unit.

In order to be able to achieve a particularly good distribution of the water jet, the impact surface can be aligned perpendicularly or almost perpendicularly in relation to an angle of incidence of the water jet flowing in in the position of use.

In order to accelerate drainage of the water that has hit the impact surface, it can be provided according to a further advantageous embodiment that the drainage bevel is inclined downwards at an angle relative to the impact surface and/or from the inside outwards. In particular, the angle can be at least 5 degrees, in particular at least 10 degrees, in particular at least 15 degrees, in particular at least 20 degrees, in particular at least 25 degrees, preferably about 30 degrees.

According to a further advantageous embodiment, the diffuser space can be annular. Alternatively or In addition to this, it can be provided that the outlet openings are formed at least partially as material recesses running outwards, preferably material recesses running radially outwards. In particular, the material recesses can each have a minimum distance that is at least 2%, in particular at least 3%, in particular at least 4%, in particular at least 5%, in particular at least 6%, in particular at least 7%, in particular at least 8%, in particular at least 9%, in particular at least 10%, corresponds to a diameter of the diffuser space. In this way, the water jets emerging from the outlet openings can be rectified before exiting in order to be able to produce a homogeneous, aerated jet pattern.

According to an advantageous embodiment, it can be provided that the diffuser space is formed between the impact surface and the flow-determining functional unit. Alternatively or additionally, it can be provided that a diffuser ring is formed or arranged downstream of the outlet openings.

According to a further advantageous embodiment, it can be provided that the flow-determining functional unit has at least one flow limiter and/or at least one throttle. It is thus possible to introduce a predefined amount into the diffuser. It can be particularly advantageous if the functional unit has at least one flow limiter, so that a required and/or desired flow rate within a working area can be provided independently of the pressure. The flow conditions in the diffuser space can thus be better controlled.

According to a particularly advantageous embodiment, it can be provided that the sanitary built-in part is a housing has, in which the diffuser and / or at least one flow-determining functional unit is at least partially used / are. The housing can preferably have a peripheral, in particular closed, wall which laterally delimits a, in particular annular, collection chamber downstream of the outlet openings in the direction of flow. The housing can be designed, for example, as a diffuser ring, which forms an outer and/or lateral boundary of an annular chamber/collection chamber.

In order to achieve a particularly good splitting up of a water jet hitting the impact surface, it can be provided according to an advantageous development that at least one splitting element is arranged on and/or on the impact surface, in particular on the edge of the impact surface. In particular, several dividing elements, preferably lying on a circular path, can be arranged on the impact surface. Alternatively or additionally, the dividing elements can be arranged in front of an outlet opening as a flow obstacle in the radial direction and/or in relation to a flow direction, for example the flow direction already mentioned above.

In order to be able to better prevent turbulence within the diffuser space, according to an advantageous development, a collection chamber can be formed between the outlet openings and an outer edge of the run-off slope within the diffuser space. A height of the diffuser space in the area of the collection chamber can preferably be higher than a height of the diffuser space in the area of the impact surface. Alternatively or additionally, according to an advantageous development, it can be provided that an outer edge of the run-off slope, for example the outer edge of the run-off slope already mentioned above, is formed by a step. Thus, the outflowing water falls at this point a tear-off edge, in particular a blunt tear-off edge, down the run-off slope, as a result of which it experiences an acceleration before it flows through the outlet openings.

To solve the above-mentioned problem, a series for at least two variants of a sanitary installation part is also proposed, in particular wherein at least one of the at least two variants corresponds to a sanitary installation part as described and claimed herein.

The series includes at least one functional unit, at least one housing and at least two different types of diffusers. The housing can be designed as a diffuser ring, for example. The series is characterized in that the at least two variants have different types of diffusers, that the at least two types of diffusers have differently designed flow-determining outlet openings. In particular, a first type can have a smaller flow class than a second type. As already explained above, the first variant can be a flow rate class whose flow rate is at most 1 gpm, in particular exactly 1 gpm, or less than 1 gpm. Accordingly, the second variant has a higher flow class with a flow rate of more than 1 gpm.

In other words, a series is proposed with at least two variants of a sanitary installation part, each variant having at least one functional unit, at least one housing and/or a diffuser ring, and at least one diffuser, characterized in that the at least two variants have different types of diffusers exhibit that the at least two types of Have diffusers differently designed flow-determining outlet openings, in particular wherein the first variant has a smaller flow class than the second variant.

Advantageous configurations of the invention are described below, which can be optionally combined alone or in combination with the features of other configurations together with the features of the subordinate claim directed to a series. In particular, the features of the sanitary installation part described and/or claimed herein can also be used in order to form further configurations according to the invention.

According to an advantageous development, it can be provided that a ratio of a width b of an outlet opening to a distance a between two adjacent outlet openings is smaller in the first type of diffuser than in the second type. It is thus possible to be able to provide built-in sanitary parts of different flow classes (and/or variants of flow classes) based on the series, with only different types of diffusers having to be used in order to achieve this. Depending on the flow rate, the correct diffuser can thus be selected and inserted into the housing in order to form a sanitary built-in part.

According to a particularly preferred embodiment of the series, it can be provided that the first variant is designed as a sanitary built-in part according to one of the preceding claims.

To sanitary built-in parts with different

To be able to produce flow classes, it can be provided that the ratio b / a of the first variant is less than is 0.41 and/or that the ratio b/a of the second variant type is 0.41 or greater than 0.41.

In order to keep the production costs of the sanitary built-in parts that can be produced using the series as low as possible, it can be provided according to a further advantageous embodiment that the housing and/or a diffuser ring of the at least two variants is structurally identical. The housing can refer to the diffuser ring or it can be different components.

According to a development, it can be provided that the second variant has no run-off slope on the diffuser. Thus, different flow properties can be achieved here than with the first variant.

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

Fig. 1

eine vorbekannte Ausgestaltungsvariante eines sanitäres Einbauteils (kann der zweiten Variante entsprechen), wobei nur ein Diffusor und nicht eine durchflussbestimmende Funktionseinheit dargestellt ist, wobei der Diffusor einen Diffusorraum aufweist, wobei der Diffusorraum teilweise durch eine Prallfläche begrenzt ist, die in den Diffusorraum einströmendes Wasser in eine seitliche Richtung ablenkt, wobei der Diffusorraum mehrere Austrittsöffnungen aufweist,

Fig. 2

eine beispielhafte Ausgestaltungsvariante eines erfindungsgemäßen sanitären Einbauteils (kann der ersten Variante entsprechen), die im Gegensatz zum Einbauteil aus Fig. 1 eine an die Prallfläche direkt anschließende Ablaufschräge aufweist, die auf die Prallfläche auftreffendes und davon ablaufendes Wasser in Gebrauchsstellung in Richtung der Austrittsöffnungen ablaufen lässt, vorzugsweise wobei das Einbauteil als Strahlregler ausgestaltet ist,

Fig. 3

eine Draufsicht auf den Diffusortyp der Variante des sanitären Einbauteils aus Fig. 1, wobei eine umlaufende Seitenwandung des Diffusors durch mehrere Austrittsöffnungen mit einer jeweiligen Breite (b) durchbrochen ist, wobei die Austrittsöffnungen derart angeordnet sind, dass zwei benachbarte Austrittsöffnungen jeweils in einem Abstand (a) voneinander beabstandet angeordnet sind,

Fig. 4

eine Draufsicht auf den Diffusortyp der Variante des sanitären Einbauteils aus Fig. 2, wobei die Austrittsöffnungen gegenüber dem Diffusortyp aus den Fig. 1 und 3 enger ausgestaltet sind, also eine geringere Breite (b) aufweisen,

Fig. 5

eine Schnittdarstellung des sanitären Einbauteils aus Fig. 3, wobei dem Diffusor eine Funktionseinheit in Strömungsrichtung vorgelagert ist,

Fig. 6

eine Schnittdarstellung des sanitären Einbauteils aus Fig. 4, wobei dem Diffusor ebenfalls eine Funktionseinheit in Strömungsrichtung vorgelagert ist, und wobei sich die Ausführungsform aus Fig. 6 gegenüber der aus Fig. 5 lediglich durch den Diffusortyp unterscheidet.

It shows:

1

a previously known design variant of a sanitary installation part (can correspond to the second variant), only a diffuser and not a flow-determining functional unit being shown, the diffuser having a diffuser space, the diffuser space being partially delimited by an impact surface, the water flowing into the diffuser space in deflects in a lateral direction, the diffuser space having a plurality of exit openings,

2

an exemplary embodiment variant of a sanitary installation part according to the invention (may correspond to the first variant), which, in contrast to the installation part 1 has a drainage slope directly adjoining the impact surface, which allows water that hits the impact surface and runs off it to run off in the direction of the outlet openings in the position of use, preferably with the built-in part being designed as a jet regulator,

3

a plan view of the diffuser type of the variant of the sanitary fixture 1 , wherein a peripheral side wall of the diffuser is perforated by a plurality of outlet openings with a respective width (b), the outlet openings being arranged in such a way that two adjacent outlet openings are each arranged at a distance (a) from one another,

4

a plan view of the diffuser type of the variant of the sanitary fixture 2 , The outlet openings compared to the diffuser type from the 1 and 3 are narrower, i.e. have a smaller width (b),

figure 5

a sectional view of the sanitary fixture 3 , whereby the diffuser is preceded by a functional unit in the direction of flow,

6

a sectional view of the sanitary fixture 4 , wherein the diffuser is also upstream of a functional unit in the direction of flow, and wherein the embodiment of 6 opposite the out figure 5 differs only by the diffuser type.

In the 1 , 3 and 5 Variants of built-in sanitary parts known from the prior art are shown, which are designed to form a water jet emerging from an outlet fitting. For this purpose, the water jet is aerated by sucking in air that is mixed with the water inside the built-in part.

The invention thus relates to a sanitary built-in part which is designed in particular as a jet regulator, preferably as a ventilated jet regulator. Built-in parts of this type generally have at least one flow-determining functional unit 2 and a diffuser 4 arranged downstream of the flow-determining functional unit 2 in the direction of flow 3 .

Such a diffuser 4 has a diffuser chamber 5, the dimensions of which are at least partially delimited by an impact surface 6.

The impact surface 6 is designed to deflect water flowing into the diffuser chamber 5 in a lateral direction in the position of use and/or during operation. The diffuser space 5 itself has a plurality of outlet openings 7 through which the water jet divided on the impact surface 6 emerges from the diffuser space 5 in the form of individual jets.

It has been found, however, that precisely at low flow rates, which can be in the range of 1 gpm +/-10%, in particular +/-20%, for example, there is insufficient aeration of a water jet flowing through the built-in part, being formed and aerated therein he follows. It is therefore not possible to produce an attractive outlet jet pattern that is desired by the customer with previously known built-in parts.

the figures 2 , 4 and 6 show a possible embodiment of a sanitary fitting according to the invention, which is denoted as a whole as 1.

Compared to previously known built-in parts, the sanitary built-in part 1 has the advantage that even low flow rates of water can be sufficiently aerated with it, so that an attractive aerated outlet jet pattern is generated.

In order to be able to adequately divide a quantity of water flowing into the diffuser space 5 therein, the diffuser space 5 has, as has already been described above for the previously known built-in part, an impact surface 6 which at least partially delimits the diffuser space 5 .

The sanitary insert 1 is characterized in that the impact surface 6 is followed by a run-off bevel 8 which accelerates water that hits the impact surface 6 and runs off it in the direction of the outlet openings 7 and allows it to run off. The drainage slope 8 can thus serve to accelerate the water running off in order to transport it in the direction of the outlet openings 7 .

It has also proven to be advantageous if the outlet openings 7 define a lateral outlet direction, in particular a lateral outlet direction which runs parallel or almost parallel to the impact surface 6 . This can be achieved in that the outlet openings 7 break through a peripheral side wall 9 of the diffuser 4 .

The outlet openings 7 each have a width b, 10. Adjacent outlet openings 7, in particular all adjacent outlet openings 7, can be arranged at equal distances a, 11. In the case of the built-in part 1 according to the invention, it has proven to be advantageous with regard to the production of an optimal outlet jet pattern at low flow rates if a ratio b/a (b divided by a) is less than 0.41.

The diffuser 4 has at least one inlet opening 12, with a water jet entering through the at least one inlet opening 12 in the position of use impinging on the impact surface 6 and being divided. The at least one inlet opening 12 is therefore set up in such a way that an entry direction of the water jet is defined in such a way that it impinges on the impact surface 6 , in particular impinges exclusively on the impact surface 6 . The sanitary built-in part 1 can have a plurality of inlet openings 12 which, in particular, are all aligned with the impact surface 6 and/or are arranged above the impact surface 6 .

The impact surface 6 is oriented in relation to the inflowing water jet in such a way that a high flow resistance arises. This can be achieved in that the impact surface 6, which can be formed as an impact plane, is aligned perpendicularly or almost perpendicularly with respect to an angle of incidence of the water jet flowing in in the position of use.

The run-off slope 8 is inclined downwards and/or from the inside outwards relative to the impact surface 6, in particular relative to a plane of the impact surface 6. This angle can be at least 5 degrees, in particular at least 10 degrees, in particular at least 15 degrees, in particular at least 20 degrees, in particular at least 25 degrees, preferably about 30 degrees.

The diffuser space can be ring-shaped or disc-shaped.

The outlet openings 7 are in the Figures 1-6 shown configurations at least partially formed as material recesses 13 running outwards. The material recesses 13 can therefore act like channels in order to reduce flow turbulence.

The material recesses 13 can each have a minimum distance that is at least 2%, in particular at least 3%, in particular at least 4%, in particular at least 5%, in particular at least 6%, in particular at least 7%, in particular at least 8%, in particular at least 9%, in particular at least 10% of a diameter 14 of the diffuser chamber 5 corresponds.

The diffuser chamber 5 is formed between the impact surface 6 and the functional unit 2 that determines the flow, being delimited on the inflow side by the functional unit 2 and on the outflow side by the impact surface 6 .

The flow-determining functional unit 2 has at least one flow limiter 15 and/or at least one throttle. In general it can be said that the functional unit changes or can change the flow rate and/or that there is a pressure difference between the sections before and after the functional unit.

A flow limiter 15 within the meaning of the invention can refer to the fact that a pressure-independent setting, in particular automatic setting, of a flow rate takes place over a working range of the flow limiter 15 . This makes it possible to keep the flow rate as constant as possible set. In contrast, with the throttle, the flow rate changes depending on the prevailing pressure.

The sanitary built-in part 1 has a housing 16, in which the diffuser 4 and/or the at least one flow-determining functional unit 2 are at least partially inserted.

The housing 16 has a wall 17 which laterally delimits an in particular annular collecting chamber 18 which is downstream of the outlet openings 7 in the direction of flow 3 . The collecting chamber 18 can serve to aerate the water jet and can therefore also have aeration openings for sucking in air, in particular from the outside.

The housing 16 thus influences the flow behavior of the water flowing through. Together with the diffuser 4, the housing 16 thus defines the flow direction 3 of the water through the built-in part 1 and/or contributes to jet formation and/or jet aeration. There is thus an interaction between the diffuser 4 and the housing 16 that determines the shape of the outlet jet, which is why the housing 16 can also be referred to as a diffuser ring 23 .

On and/or at the edge of the impact surface 6 there are several dividing elements 19 arranged in particular on a circular path. The dividing elements 19 are positioned in front of the outlet openings in the direction of flow 3 . In the embodiment variant shown, they divide the edge and/or an outer edge 20 of the run-off slope 8 into sections.

The divider elements 19 can be designed, for example, as ramps and/or wedges rising in the direction of the outlet openings, as in FIGS Figures 1-6 is shown.

After the run-off slope 8 a step 22 is formed, which leads to a collection chamber 21 downstream of the run-off slope in the direction of flow 3 . The collection chamber 21 therefore represents part of the diffuser space 5. The height of the collection chamber 21 is higher than the rest of the diffuser space 5, particularly in the area of the baffle surface 6.

the Figures 1-6 also refer to a series of at least two variants 24, 25 of sanitary built-in parts 1.

The variants 24 and 25 differ only in a diffuser type that is installed in them.

The functional unit 2 and/or the housing 16, in particular the diffuser ring 23, of the two variants 24, 25 is of identical design.

The at least two variants 24, 25 of the series have different diffusers 4, which differ in that the at least two types of diffusers 4 have outlet openings 7 with a different opening dimension. The first variant 24 is therefore assigned to a smaller flow class than the second variant 25 .

It can also be said that a ratio of a width b of the respective outlet openings 7 to a respective distance a between two adjacent outlet openings 7 is smaller in the first variant 24 than in the second variant 25 .

More specifically, it can be said that the ratio b/a of the first variant 24 is less than 0.41 and/or that the ratio b/a of the second variant 25 is 0.41 or greater than 0.41.

How from the 1 and 3 it can be seen that the diffuser 4 of the second variant 25 has no run-off slope 8 . Rather, the impact surface 6 is extended here and forms a sharp, particularly right-angled edge. The water thus flows over the sharp tear-off edge and falls into the collection chamber 21.

The invention thus relates in particular to a sanitary built-in part 1, with at least one flow-regulating functional unit 2 and a diffuser 4 arranged downstream of the flow-regulating functional unit 2 in the direction of flow 3, the diffuser 4 having a diffuser space 5, the diffuser space 5 being partially delimited by an impact surface 6 , which deflects water flowing into the diffuser chamber 5 in a radial direction towards a plurality of outlet openings 7, with a drainage slope 8 being arranged obliquely to the impact surface 6, which allows water that hits the impact surface 6 and runs off it to run off in the direction of the outlet openings 7 in the position of use.

Reference List

1

Sanitary built-in part

2

Flow-determining functional unit

3

flow direction

4

diffuser

5

diffuser space

6

baffle

7

exit port

8th

drainage slope

9

sidewall

10

width (b)

11

distance (a)

12

entry opening

13

material recess

14

Diameter of the diffuser space

15

flow limiter

16

Housing

17

wall

18

containment chamber

19

splitter element

20

Outer edge of the drain slope

21

collection chamber

22

Step

23

diffuser ring

24

First variant

25

Second variant

Claims (17)

Sanitary built-in part (1), with at least one flow-determining functional unit (2) and a diffuser (4) arranged after the flow-determining functional unit (2) in the direction of flow (3), the diffuser (4) having a diffuser space (5), the diffuser space (5) is partially delimited by an impact surface (6) which deflects water flowing into the diffuser space (5) in a lateral direction, the diffuser space (5) having a plurality of outlet openings (7), characterized in that - that the outlet openings (7) break through a peripheral side wall (9) of the diffuser (4), - that the outlet openings (7) each have a width (b, 10), - that two adjacent outlet openings (7) are each arranged at a distance (a, 11) from one another, and - that a ratio b/a is less than 0.41. Sanitary built-in part (1) according to claim 1, wherein the impact surface (6) is adjoined by a run-off bevel (8) which allows water that hits the impact surface (6) and runs off it to run off in the direction of the outlet openings (7) in the position of use. Sanitary built-in part (1) according to one of claims 1 or 2, wherein the diffuser space (5) has at least one inlet opening (12), with a water jet entering through the at least one inlet opening (12) impinging on the impact surface (6) and dividing it up becomes. Sanitary built-in part (1) according to one of the above Claims, wherein the impact surface (6) is aligned perpendicularly or almost perpendicularly with respect to an angle of incidence of the water jet flowing in in the position of use. Sanitary built-in part (1) according to one of the preceding claims, wherein the run-off slope (8) is inclined downwards and/or from the inside outwards at an angle relative to the impact surface (6), in particular the angle being at least 5 degrees, in particular at least 10 degrees , in particular at least 15 degrees, in particular at least 20 degrees, in particular at least 25 degrees, preferably about 30 degrees. Sanitary built-in part (1) according to any one of the preceding claims, wherein the diffuser space (5) is annular or disc-shaped and / or - wherein the outlet openings (7) are formed at least partially as outwardly extending material recesses (13), preferably radially outwardly extending material recesses (13), in particular wherein the material recesses (13) each have a minimum distance that is at least 2% of a diameter ( 14) of the diffuser space (5). Sanitary built-in part (1) according to one of the preceding claims, wherein the diffuser space (5) is formed between the impact surface (6) and the flow-determining functional unit (2) and / or - A diffuser ring (23) being formed or arranged downstream of the outlet openings (7). Sanitary fitting (1) according to any one of the preceding claims, wherein the flow-determining functional unit (2) at least one flow limiter (15) and / or has at least one throttle. Sanitary component (1) according to one of the preceding claims, wherein the sanitary component (1) has a housing (16) in which the diffuser (4) and/or the at least one flow-determining functional unit (2) is/are inserted, preferably wherein the housing (16) has a peripheral, in particular closed, wall (17) which laterally delimits an in particular annular collecting chamber (18) downstream of the outlet openings (7) in the direction of flow (3). Sanitary built-in part (1) according to one of the preceding claims, wherein at least one dividing element (19) is arranged on and/or on the impact surface (6), in particular on the edge of the impact surface (6), in particular several, preferably lying on a circular path Divider elements (19) are arranged and/or wherein the divider elements (19) are arranged in front of an outlet opening (7) in the radial direction and/or in relation to one or the flow direction (3) as a flow obstacle. Sanitary built-in part (1) according to one of the preceding claims, wherein a collection chamber (21) is formed within the diffuser space (5) between the outlet openings (7) and an outer edge (20) of the drainage slope (8), preferably wherein a height of the diffuser space (5) in the area of the collection chamber (21) is higher than a height of the diffuser space (5) in the area of the impact surface (6), and/or wherein one or the outer edge (20) of the drainage slope (8) is formed by a step (22 ) is trained. Series with at least two variants (24, 25) of a sanitary built-in part (1), in particular wherein at least a variant corresponds to a sanitary built-in part (1) according to one of the preceding claims, each variant having at least one functional unit (2), at least one housing (16) and/or a diffuser ring (23), and at least one diffuser (4), characterized marked, - that the at least two variants (24, 25) have different types of diffusers (4), - that the at least two types of diffusers (4) have differently designed flow-determining outlet openings (7), in particular the first variant having a smaller flow class than the second variant. Series according to claim 12, wherein a ratio of a width b of an outlet opening (7) to a distance a between two adjacent outlet openings (7) is smaller in the first variant than in the second variant. Series according to one of claims 12 or 13, wherein the first variant (24) is designed as a sanitary built-in part (1) according to one of the preceding claims. Series according to one of Claims 12 to 14, the ratio b/a of the first variant (24) being less than 0.41 and/or the ratio b/a of the second variant (25) being 0.41 or greater than 0, 41 is. Series according to one of claims 12 to 15, wherein the housing (16) and/or one or the diffuser ring (23) of the at least two variants (24, 25) is structurally identical. Series according to one of claims 12 to 16, wherein the second variant (25) has no run-off bevel (8) on the diffuser (4).

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