EP3779077A1 - Sanitary built-in part - Google Patents

Abstract

In the case of a sanitary built-in part (1) with a functional unit (2) and a diffuser (3) formed downstream behind the functional unit (2), the functional unit (2) having at least one inlet opening (5, 5 ') to a diffuser space (6) forms, the diffuser (3) having a baffle plate (7) which delimits the diffuser space (6) in a direction of flow predetermined by the at least one inlet opening (5, 5 ') and the water flowing in through the at least one inlet opening (5, 5') deflects in a lateral direction, the diffuser space (6) being formed between the baffle plate (7) and the functional unit (2) and having an outlet opening (9) through which water entering through the at least one inlet opening (5, 5 ') is completely When exiting the diffuser space (6), it is proposed that the baffle plate (7) be essentially flat and / or free of obstacles on a side facing the diffuser space (6) and / or at its outer edge (11) and the like is continuously open.

Description

The invention relates to a sanitary built-in part with a functional unit and a diffuser formed downstream behind the functional unit, the functional unit forming at least one inlet opening to a diffuser space, the diffuser having a baffle plate delimiting the diffuser space in an inflow direction predetermined by the at least one inlet opening, which deflects water flowing in through the at least one inlet opening in a lateral direction, the diffuser space being formed between the baffle plate and the functional unit and having an outlet opening through which water entering through the at least one inlet opening completely exits the diffuser space.

The invention is based on the object of improving the jet pattern of an exiting water jet.

The features of claim 1 are provided according to the invention to achieve the stated object. In particular, in order to achieve the stated object, it is proposed according to the invention in a sanitary built-in part of the type described at the outset that the baffle plate is essentially (or even exactly) flat on a side facing the diffuser space. Undesired turbulence that could be generated by structures on the baffle plate can thus be avoided.

Alternatively or in addition, it can be provided that the baffle plate is essentially (or even completely) unobstructed on a side facing the diffuser space. The invention has recognized that a jet distribution in the area of the Baffle plate is dispensable. Thus, the invention can achieve in a simple manner a substantially or completely undisturbed deflection of the flowing water after exiting the inlet opening.

In one embodiment of the invention, in one of the exemplary embodiments described above, it can be provided that the diffuser chamber has at least two inlet openings spaced from one another along a main flow direction and that the diffuser chamber has a profile along the main flow direction that is between the spaced apart inlet openings and / or on the downstream the at least two inlet openings defines a profile widening. In this way, increases in a water flow that result from further inlet openings along the main flow direction can be absorbed simply by a corresponding increase in a cross-sectional area of the diffuser space. Undesired turbulence at an inlet opening can thus be avoided. The main flow direction can be described here as the preferably shortest connecting line between an inlet opening, preferably an inlet opening arranged furthest upstream, and the aforementioned outlet opening of the diffuser space. Due to the rectifying effect of the appropriately dimensioned diffuser space, this can coincide with the mean flow velocity direction in an angular segment containing the inlet opening.

The profile widening is preferably designed as a profile ramp. In this way, a step-free profile can be provided so that the water can flow in the diffuser space with little or no turbulence.

It can be provided here that the profile widening transversely increases a cross-sectional area of the diffuser space to the main flow direction defined, which is matched to a cross-sectional area of the downstream inlet opening. It can thus be achieved in a simple manner that the water entering via this downstream inlet opening can be combined with the water from the upstream inlet opening with as little turbulence as possible. The continuity equation shows that the increase in cross-sectional area means that different speed profiles and / or sudden increases in speed can be avoided. Vortex formation can thus be reduced.

In one embodiment of the invention, it can be provided that the baffle plate is delimited on all sides, that is to say circumferentially, by a cross-sectional expansion for the flowing water. An unobstructed limitation of the baffle plate can thus be achieved. In particular, it can be achieved that the flowing water can flow off the baffle plate undisturbed.

The cross-sectional expansion is preferably formed by a (sloping) step. A turbulence which is desired downstream of the baffle plate and through which air is admixed can thus be easily achieved.

In one embodiment of the invention it can be provided that the at least one inlet opening of the baffle plate is arranged opposite one another. A direct flow onto the baffle plate to deflect the flow direction to the outside can thus be achieved. The at least one inlet opening is preferably oriented along a longitudinal direction of the sanitary built-in part.

In one embodiment of the invention it can be provided that the at least one inlet opening is arranged in the center of the baffle plate. Rotationally symmetrical flow conditions can thus be achieved. A twist formation can thus avoided or at least reduced.

In one embodiment of the invention it can be provided that a carrier plate of the functional unit is supported on the impact plate. Thus, forces that are applied to the functional unit by the flowing water can be diverted. The support is preferably formed centrally on the impact plate. This enables a symmetrical, in particular rotationally symmetrical, configuration of the diffuser space.

In one embodiment of the invention, it can be provided that a flow divider, which serves as a filling element and can thereby prevent undesired flow effects, is formed on the baffle plate in the center of the inlet opening. A reference point can thus be formed with which a flow in the diffuser space is oriented. Circular currents or eddies at a first point of impact of the water on the baffle plate can thus be avoided. The impinging jet naturally already has a cross-section of a (possibly deformed) circular disk, in which water in each circular disk segment can simply be deflected outwards in a certain direction. For example, the flow divider can be formed by the support already mentioned. Thus, the structural design is easy to maintain.

In one embodiment of the invention it can be provided that the functional unit has at least one quantity regulator. The advantage here is that a required or desired flow rate can be provided within a working area independently of pressure. The flow conditions in the diffuser space can thus be easily controlled.

Alternatively or in addition, the functional unit can have at least one throttle. Thus, flow rates are reducible in the diffuser space with respect to an unhindered flow.

In one embodiment of the invention it can be provided that the functional unit has two quantity regulators connected in parallel in the flow direction. This means that larger flow rates can be provided independently of the pressure. The quantity regulators are preferably arranged concentrically to one another. Installation space can thus be saved without the control elements of the volume regulator having to be made very small. Here, the two flow regulators can each form an inlet opening into the diffuser space. The inlet openings can here - for example when the flow regulators are arranged concentrically to one another - be arranged at a distance from one another along the already mentioned main flow direction and thus form an upstream and a downstream inlet opening.

In one embodiment of the invention it can be provided that a jet ventilation device is connected downstream of the diffuser. A ventilated jet can thus be provided. The uniform or low-turbulence flow according to the invention in the diffuser space has proven to be particularly favorable for subsequent air enrichment.

In one embodiment of the invention it can be provided that the diffuser space has an essentially (or even exactly) constant height. Turbulence can thus also be avoided or at least reduced in the vertical direction (in relation to the baffle plate and / or an extension of the diffuser space). The height of the diffuser space can be characterized, for example, as a dimension transverse to the direction of flow in the diffuser space and / or transverse to a direction of extent of the baffle plate.
In one embodiment of the invention it can be provided that the diffuser space forms a flow straightener. Uniform, for example radially oriented partial flows can thus be achieved at the outlet opening, which are favorable for subsequent beam shaping. For this purpose, the diffuser space is preferably designed to be free of obstacles or at least to have few obstacles in order to avoid undesired turbulence as far as possible. Here, the invention makes use of the fact that the flow rectification effect is generated in that the boundary walls of the diffuser space forming a channel are aligned and dimensioned in the manner described.

In one embodiment of the invention it can be provided that a height of the diffuser space is less than half the height of a downstream collecting chamber. A comparatively narrow diffuser space has proven to be beneficial for generating a rectified flow. Here, the term "rectified" can also include flow patterns in which the partial flows are not aligned parallel, but rather radially with respect to a center.

The invention generally has the advantage that a flow pattern that is as uniform as possible in the diffuser space can be achieved due to the narrow configuration.

In general, it can be said that the features described, individually or in combination with one another, can serve to generate a speed profile that is as homogeneous as possible. Large differences in the velocities of neighboring partial flows tend to generate turbulence. The invention provides measures to prevent large speed differences from occurring.

An embodiment of the invention in which an annular chamber is connected downstream of a diffuser in one flow direction, which opens into at least one outlet nozzle, with at least one ventilation opening being formed behind the at least one outlet nozzle, via which outside air can be supplied to generate a ventilated water jet, it can be provided that the annular chamber above the at least one outlet nozzle has a contour in a longitudinal section, into which an ellipse can be fitted which has an aspect ratio of greater than 0.433 of a small semi-axis to a large semi-axis. The advantage here is that the annular chamber provides a space for inflowing water, which enables an approximately circular flow pattern in a longitudinal section and at the same time takes into account the restricted space of a sanitary installation part. Such a flow pattern is particularly favorable for effective air admixture.

The fitting of an ellipse can for example be characterized in such a way that the preferably largest ellipse in terms of area is to be taken, which touches a contour or boundary line of a cross-section transversely to the circulation chamber of the annular chamber at four points on a contour or boundary line approximated in particular as a square.

In general, it can be said that the closer the ratio of the semi-axes gets to 1, the more favorable the flow pattern is for effective air admixture. However, other conditions must also be observed here, for example the requirement for the smallest possible external dimension of the built-in part transverse to the longitudinal or flow direction. In many cases, these prevent the aspect ratio of 1 from actually being achieved.

The numerical ratio is preferably more than or is equal to 0.45, 0.5 or even 0.6. This means that almost or precisely circular flow patterns can be achieved.

An embodiment of the invention in which an annular chamber is connected downstream of a diffuser in one flow direction, which opens into at least one outlet nozzle, with at least one ventilation opening being formed on the outflow side of the at least one outlet nozzle, via which outside air can be supplied to generate a ventilated water jet, with between the diffuser and the annular chamber a guide surface, which guides the incoming water into the annular chamber, it can be provided that the annular chamber in a partial annular chamber located above an extension of the guide surface in the annular chamber has a contour in a longitudinal section into which a Ellipse can be fitted, which has an aspect ratio of greater than 0.52 of a small semi-axis to a large semi-axis. The invention has recognized that the water flows from the guide surface into the annular chamber, so that the geometrical cross-sectional shape described is favorable to force this water into an approximately circular path.

The aspect ratio is preferably more than 0.55 or is equal to 0.55. The aspect ratio is particularly preferably more than 0.6 or is equal to 0.6. The aspect ratio is very particularly preferably more than 0.69 or is equal to 0.69. This enables an even better approach to the circular path and thus further improved ventilation.

In one embodiment of the invention it can be provided that the annular chamber has a square, in particular (essentially or even exactly) parallelogram-shaped, longitudinal section. A parallelogram-shaped cross-sectional shape is particularly easy to implement and can provide enough space for good swirling of the water with inflowing air. The longitudinal section can thus be selected transversely to a (for example circular) dimension of extension of the annular chamber.

In general, an enlarged annular chamber according to the invention can be achieved, for example, in that a stepped constriction is formed in front of the outlet nozzle.

In one embodiment of the invention it can be provided that an upper cover is placed on projections protruding into the annular chamber. Thus, the annular chamber can be designed with a maximum extent radially in relation to the longitudinal direction of the built-in part, without being limited by a cover lying over it and carried by it. The functional unit is preferably formed on the cover. The diffuser thus carries the functional unit. The projections can be plate-shaped. This can improve turbulence by laterally deflecting a water flow running in the direction of extent or along the annular chamber.

In one embodiment of the invention it can be provided that a plurality of ventilation openings are arranged downstream of the outlet nozzle, distributed over a circumference of the built-in part. An air supply from all sides can thus be provided. The invention has recognized that the air is already admixed in the annular chamber in front of the outlet nozzle, the air entering the annular chamber through the outlet nozzle - against the direction of flow of the water.

The ventilation openings are preferably formed at regular intervals. The ring chamber can thus be supplied with air evenly.

In one embodiment of the invention, it can be provided that the outlet nozzle is formed by an annular gap. Further subdivisions of the ventilated jet can thus be avoided.

In one embodiment of the invention it can be provided that the annular chamber is arranged offset downwards in a longitudinal section with respect to an upstream collecting chamber. This enables the water to flow in approximately into a vertically central region of the annular chamber. This is beneficial for good air admixture.

In one embodiment of the invention it can be provided that the annular chamber extends above and below one or the guide surface. It can thus be achieved that the water enters at a distance from a delimitation of the annular chamber. This is favorable for a good turbulence for air admixture.

In one embodiment of the invention it can be provided that a plurality of passage openings spaced apart from one another are formed between the collecting chamber and the annular chamber. It can thus be achieved that spatially separated partial flows enter the annular chamber. In the event of a lateral deflection along the annular chamber, this can be used to generate partial flows that meet one another. A further improved turbulence for jet ventilation can thus be achieved. The passage openings described can best be combined with the guide surface and / or the offset arrangement of the annular chamber and collecting chamber also described, in order to achieve an approximately central or only slightly eccentric entry of partial flows of the water into the annular chamber. This makes it possible to achieve a particularly effective admixture of air.

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

Fig. 1

ein sanitäres Einbauteil nach dem Stand der Technik,

Fig. 2

ein erfindungsgemäßes sanitäres Einbauteil in einer Schrägansicht von oben,

Fig. 3

das erfindungsgemäße Einbauteil gemäß Fig. 2 in einer Längsschnittdarstellung,

Fig. 4

eine Schrägansicht des Diffusor-Einsatzes mit Prallplatte und Sammelkammer des Einbauteils gemäß Fig. 1,

Fig. 5

eine Ansicht von oben auf den Diffusor-Einsatz gemäß Fig. 4,

Fig. 6

einen Längsschnitt durch den Diffusor-Einsatz gemäß Fig. 5 entlang der Schnittebene A-A,

Fig. 7

einen Längsschnitt durch ein weiteres erfindungsgemäßes sanitäres Einbauteil,

Fig. 8

eine Schrägansicht auf den Diffusor-Einsatz des Einbauteils gemäß Fig. 7,

Fig. 9

eine Ansicht von oben auf den Diffusor-Einsatz gemäß Fig. 8,

Fig. 10

einen Längsschnitt entlang B-B durch den Diffusor-Einsatz gemäß Fig. 9,

Fig. 11

ein weiteres erfindungsgemäßes sanitäres Einbauteil in Explosionsdarstellung,

Fig. 12

das Einbauteil gemäß Fig. 11 in einer Längsschnittdarstellung,

Fig. 13

ein Detail aus Fig. 3 mit eingepasster großer Ellipse,

Fig. 14

das Detail gemäß Fig. 13 mit eingepasster kleiner Ellipse,

Fig. 15

eine Darstellung analog Fig. 13 zu dem Einbauteil gemäß Fig. 12

Fig. 16

eine Darstellung analog zu Fig. 14 für das Einbauteil gemäß Fig. 12,

Fig. 17

eine Darstellung analog zu Fig. 13 einer Ringkammer eines weiteren erfindungsgemäßen Einbauteils,

Fig. 18

eine Darstellung analog zu Fig. 14 der Ringkammer aus Fig. 17, wobei die linke Abbildung die Lage der verlängerten Leitfläche und die rechte Abbildung die Maße des großen und des kleinen Durchmessers der eingepassten Ellipse wiedergibt,

Fig. 19

eine zweidimensionale Schnittdarstellung eines weiteren erfindungsgemäßen Einbauteils,

Fig. 20

eine dreidimensionale Schnittdarstellung des Einbauteils nach Fig. 19 und

Fig. 21

eine weitere dreidimensionale Schnittdarstellung des Einbauteils nach Fig. 19.

It shows:

Fig. 1

a sanitary installation part according to the state of the art,

Fig. 2

a sanitary installation part according to the invention in an oblique view from above,

Fig. 3

the built-in part according to the invention according to Fig. 2 in a longitudinal section,

Fig. 4

an oblique view of the diffuser insert with baffle plate and collecting chamber of the built-in part according to FIG Fig. 1 ,

Fig. 5

a top view of the diffuser insert according to Fig. 4 ,

Fig. 6

a longitudinal section through the diffuser insert according to Fig. 5 along the section plane AA,

Fig. 7

a longitudinal section through another sanitary installation part according to the invention,

Fig. 8

an oblique view of the diffuser insert of the built-in part according to Fig. 7 ,

Fig. 9

a top view of the diffuser insert according to Fig. 8 ,

Fig. 10

a longitudinal section along BB through the diffuser insert according to FIG Fig. 9 ,

Fig. 11

a further sanitary installation part according to the invention in an exploded view,

Fig. 12

the built-in part according to Fig. 11 in a longitudinal section,

Fig. 13

a detail Fig. 3 with fitted large ellipse,

Fig. 14

the detail according to Fig. 13 with fitted small ellipse,

Fig. 15

a representation analogous Fig. 13 to the built-in part according to Fig. 12

Fig. 16

a representation analogous to Fig. 14 for the built-in part according to Fig. 12 ,

Fig. 17

a representation analogous to Fig. 13 an annular chamber of a further built-in part according to the invention,

Fig. 18

a representation analogous to Fig. 14 the annular chamber Fig. 17 The left figure shows the position of the extended guide surface and the right figure shows the dimensions of the large and small diameter of the fitted ellipse,

Fig. 19

a two-dimensional sectional view of a further built-in part according to the invention,

Fig. 20

a three-dimensional sectional view of the built-in part according to Fig. 19 and

Fig. 21

a further three-dimensional sectional view of the built-in part Fig. 19 .

Figure 1 shows a sanitary built-in part, designated as a whole by 1, according to the prior art. The built-in part 1 has a functional unit 2 and a diffuser 3, which is arranged behind the functional unit 2 in a flow direction. The diffuser 3 is formed on a diffuser insert 4.

The functional unit 2 opens into the diffuser space 6 of the diffuser 3 via a circular inlet opening 5.

The diffuser space 6 is delimited by a baffle plate 7, which can flow against through the inlet opening 5.

This baffle 7 deflects the entering water in a lateral, radial direction.

The diffuser space 6 is arranged between the baffle plate 7 and the functional unit 2 and is delimited in the radial direction, which is defined with respect to a central axis 8, by an outlet opening 9. This outlet opening 9 runs around the diffuser space 6 on a cylinder jacket.

The baffle plate 7 delimits the diffuser space 6 in an outflow direction predetermined by the inlet opening 5.

A plurality of flow obstacles 10, each with a triangular horizontal section, are formed on the baffle plate 7 and divide the water deflected on the baffle plate 7 into several individual partial flows.

The flow obstacles 10 are here arranged at a distance from the functional unit 2, so that water can also flow over the flow obstacles 10.

Figure 2 to 6 show different views of a sanitary built-in part according to the invention. These figures are described together below.

Structurally and / or functionally according to the preceding built-in part Figure 1 Similar or identical components and functional units are denoted by the same reference symbols and are not described again separately. The remarks on Figure 1 therefore apply to the Figures 2 to 6 corresponding.

The exemplary embodiment according to the invention differs from the prior art Figure 1 in that the opening cross section of the outlet opening 9 has an area which exceeds an area of an opening cross section of the inlet opening 5 by at most 10%. In the present exemplary embodiment, the surface areas are even chosen to be the same size.

In contrast to the variant according to Figure 1 , in which flow obstacles 10 were arranged on the baffle plate 7, the baffle plate 7 on the side facing the diffuser space 6 is designed to be flat and free of obstacles.

This means that the outlet opening 9 is designed to be open all the way around the outer edge 11 of the baffle plate 7.

Radially outside of the edge 11 is a step 12 which slopes downwards. This step 12 thus forms a cross-sectional widening compared to the opening cross-section of the outlet opening 9.

The cross-sectional expansion formed in this way is formed circumferentially around the entire baffle plate 7.

Through the step 12, the outer edge 11 forms a circumferential tear-off edge over which the water flow flows downwards.

This is particularly beneficial for initiating the turbulence, which is described below.

In Figure 3 it can be seen that the baffle plate 7 is arranged opposite the inlet opening 5 in such a way that the inlet opening 5 is centered or centrally, that is to say concentric here, with the baffle plate 7.

A central support 13, which supports the functional unit 2, is formed on the impact plate 7. In further exemplary embodiments, the central support 13 can also be formed on the functional unit 2 and sit on the impact plate 7 or engage in a recess formed there.

This support 13 forms a flow divider 14 which prevents the water flow from flowing from the inlet opening 5 towards the central axis 8 and over the central axis 8. Rather, the flow divider 14 has the effect that the water flowing in from the inlet openings 5 is deflected radially, essentially in a straight line, outwards. The flow divider 14 also fills a central area of the diffuser space 6, which is not required and in which there is a risk of vortex formation.

The housing of the flow regulators 15, 16, which is designed as a carrier plate 37, is also supported centrally on the baffle plate 7 via the support 13.

In the embodiment according to Figure 2 to 6 Functional unit 2 has two quantity regulators 15, 16. Here, quantity regulators 15, 16 are each provided in a manner known per se with an elastically deformable regulating body as regulating element 22, 23 which, depending on the pressure, sets an opening cross-section of a control gap formed behind the regulating body. The control elements 22, 23 are each in one Annular gap 20, 21 arranged. For a space-saving arrangement, the volume regulators 15, 16 are arranged concentrically one inside the other and nested. The mentioned control gaps together form the inlet opening 5.

In further exemplary embodiments, other quantity regulators or combinations of quantity regulators and throttles or only throttles are arranged.

The 3 in Figure 2 to 6 a jet ventilation device 17 is connected downstream in the flow direction. The jet ventilation device 17 has a collecting chamber 18 which is connected downstream of the diffuser space 6 and which is opened by the already mentioned step 12. This collecting chamber 18 is designed in a ring-shaped circumferential manner and opens into an annular chamber 24 via a multiplicity of radial passage openings 19. The annular chamber 24 in this case is designed in an annular circumferential manner and can be continuously open or partially interrupted by intermediate sections. In the present exemplary embodiment, the annular chamber 24 is designed to be continuously open.

The annular chamber 24 is followed by an outlet nozzle 25 which is designed as an annular gap and which follows the course of the annular chamber 24.

Underneath the outlet nozzle 25, ventilation openings 32 leading to the outside are formed, which extend evenly distributed along the circumference.

Through this ventilation opening 32, air enters the annular chamber 24 from the outside via the outlet nozzle 25 - that is, against the direction of flow of the water - in which it is mixed with the water bubbling past.

The diffuser space 6 has a beyond the flow divider 14 constant height, i.e. vertical dimension, and thus forms a low-obstacle, preferably obstacle-free, flow straightener.

The height of the diffuser space 6, that is, its extension along the central axis 8 or in the longitudinal direction, is smaller than half the height of the downstream collecting chamber 18, that is, its extension along the central axis 8.

Figure 13 shows an enlarged illustration Figure 2 .

An ellipse 26 is fitted or inscribed in the cross section of the annular chamber 24, the aspect ratio of which of the length of the small semiaxis to the major semiaxis is equal to 0.53 and thus more than 0.433. In further exemplary embodiments, ellipses can be fitted whose aspect ratio of the small semiaxis to the major semiaxis is more than 0.45, 0.5, 0.6 or even 0.69

The fitted ellipse 26 thus fills the annular chamber 24 as well as possible.
In Figure 14 it can be seen that the collecting chamber 18 has a guide surface 27 at the bottom, which guides the incoming water into the annular chamber 24.

If the guide surface 27 is extended into the annular chamber 24, it can be seen that an ellipse 26 can be fitted in the partial annular chamber 31 formed in this way above the guide surface 27, the aspect ratio of which of the small semiaxis to the major semiaxis is approximately 0.69 and therefore greater is than 0.52 and even greater than 0.55 and greater than 0.6.

This ellipse 28 describes in good approximation the course of the water flow after entering the annular chamber 24 from the guide surface 27.

This almost circular path guidance leads to ventilation and thus air enrichment before the water exits to the outlet nozzle 25.

In the representations according to Figure 3 , Figure 13 and Figure 14 it can be seen that the annular chamber 24 has a longitudinal section transverse to its direction of extension, which has a parallelogram-shaped shape. To form a sufficiently narrow outlet nozzle 25, a stepped constriction 30 is thus formed at the end of the annular chamber 24 on the outflow side.

The outlet nozzle 25 is formed by a circumferential annular gap 20 between the diffuser insert 4 and a housing sleeve 33.

In Figure 3 it can also be seen that the annular chamber 24 is arranged in a longitudinal section with respect to the upstream collecting chamber 18 downwards or offset towards an outlet 34.

This ensures that the annular chamber 24 extends both above and below the guide surface 27 in this longitudinal section.

The Figures 7 to 10 show different views of a further sanitary built-in part 1 according to the invention. Components and functional units that are structurally and / or functionally similar or identical to the preceding exemplary embodiments are denoted by the same reference symbols and are not described again separately. The remarks on the Figures 2 to 6 therefore apply to the Figures 7 to 10 corresponding.

The embodiment according to Figures 7 to 10 differs from the previous embodiment at least in that the baffle plate 7 is not completely flat, but has at its radially outer end a hill-shaped elevation 35 through which the outlet opening 9 forms a nozzle. The jump-shaped elevation 35 is dimensioned in such a way that the impact plate 7 is still designed essentially flat and free of obstacles.

The Figures 11 and 12 show a further exemplary embodiment according to the invention of a sanitary built-in part 1. Again, structurally and / or functionally similar or identical components and functional units are denoted by the same reference symbols and are not described separately. The statements about the preceding exemplary embodiments therefore apply to the Figures 11 and 12 corresponding.

The embodiment according to Figures 11 and 12 differs from the preceding exemplary embodiments in that the annular chamber 24 does not have a parallelogram-shaped cross-sectional shape in longitudinal section.

Rather, a trapezoidal shape is at least approximately implemented here, in which the upper end of the annular chamber 24 is widened so that the diffuser insert 4 is no longer supported by the solid material of the housing sleeve 33. To support the diffuser insert 4, plate-shaped projections 36 are formed here, which protrude into the annular chamber 24.

These projections 36 serve, on the one hand, to hold the diffuser insert 4 and, on the other hand, to deflect water currents that flow along the direction of extent of the circular annular chamber 24, radially inward. This further improves the mixing of the water currents.

These projections 36 are preferably corresponding to Position of the passage openings 19 formed.

The Figures 15 and 16 show the ellipses 26, 28 analogously to FIGS Figures 13 and 14 for the situation of the built-in part 1 according to the Figures 11 and 12 .

It can be seen that because of the special shape of the annular chamber 24, the fitted ellipses 26, 28 are oriented obliquely with respect to the central axis 8, which defines the longitudinal direction of the built-in part 1. In the present case, the ellipse 26 has an aspect ratio of 0.55 from the small semiaxis to the major semiaxis, that is to say it is above a ratio of 0.52. The ellipse 28, on the other hand, has an aspect ratio of approximately 0.69 from the small semiaxis to the major semiaxis.

Figures 17 and 18 show representations analogous to the Figures 13 and 14 . Components and functional units that are structurally and / or functionally similar or identical are denoted by the same reference symbols and are not described separately. The remarks on the Figures 1 to 16 therefore apply to the Figures 17 and 18 corresponding.

In Figure 17 the ratio of the small semi-axis (associated diameter 2b) to the large semi-axis (associated diameter 2a) of the ellipse 26 is 0.55. In Figure 18 the ratio of the small semi-axis (associated diameter 2b) to the large semi-axis (associated diameter 2a) of the ellipse 26 is 0.69.

Figures 19 and 20 show different views of a further sanitary built-in part 1 according to the invention. These figures are described together below. Constructively and / or functionally to one of the preceding built-in parts according to FIGS Figures 1 to 18 Similar or identical components and functional units are with the same Designated reference numerals and not described again separately. The remarks on the Figures 1 to 18 therefore apply to the Figures 19 and 20 corresponding.

The built-in part 1 according to Figures 19 and 20 differs from the preceding exemplary embodiments in that the diffuser space 6 does not have a profile 39 with a constant height. Rather, a widened profile 40 is formed along the main flow direction 38 between the upstream inlet opening 5, which is assigned to the flow regulator 15, and the downstream inlet opening 5 ', which is assigned to the flow regulator 16, through which the cross-sectional area of the diffuser space 6 of a cylinder jacket extends around the Axis 8 changes outward more than proportionally to the radius of the cylinder jacket. As a result of this increase in area, the additional water flow which flows through the downstream inlet opening 5 ′ into the water flow from the upstream inlet opening 5 can be absorbed without any significant eddies forming. In further exemplary embodiments, the profile ramp 41 can additionally or alternatively be formed on the functional unit 2. The slope of the profile ramp 41 is selected so that the profile widening 40 defines an increase in the area of a cross-sectional area of the diffuser space 6 transversely to the main flow direction 38, which is matched to an area of a cross-sectional area of the downstream inlet opening 5 '. It can thus be said that the surface area of a cylinder jacket around the axis 8 in the diffuser space 6 behind the profile widening 40 is greater than the corresponding surface area in front of the profile widening 40 by the area of the downstream inlet opening 5 ′. The invention uses the continuity equation here in order to achieve an approximately constant flow velocity.

The embodiment according to Figures 19 and 20 further differs from the preceding exemplary embodiments in that the flow divider 14 is not formed as a pin on the baffle plate 8, but rather - pointing downwards - on the functional unit 2. The functional unit 2 is thus supported on the baffle plate 8 and on the diffuser insert 4.

In the sanitary built-in part 1 with a diffuser 3 arranged behind a functional unit 2 and an annular chamber 24 arranged behind the diffuser 3, it is proposed that an area of an opening cross section of an outlet opening 9 of the diffuser 3 be at most 10% larger than an area of an opening cross section of an inlet opening 5 , 5 'of the diffuser 3 and / or the annular chamber 24 with a contour that allows an ellipse 26, 28 to be inscribed with the smallest possible eccentricity in a longitudinal section of the built-in part 1.

List of reference symbols

1

Mounting part

2

Functional unit

3

Diffuser

4th

Diffuser insert

5

(upstream) inlet opening

5 '

(downstream) inlet opening

6

Diffuser space

7th

Baffle plate

8th

Central axis

9

Outlet opening

10

Flow obstruction

11

Outer edge

12th

step

13

Support

14th

Flow divider

15th

Flow regulator

16

Flow regulator

17th

Jet ventilation device

18th

Collection chamber

19th

Passage opening

20th

Annular gap

21st

Annular gap

22nd

Control element

23

Control element

24

Annular chamber

25th

Outlet nozzle

26th

ellipse

27

Guide surface

28

ellipse

29

Flow straightener

30th

Narrowing

31

Partial annular chamber

32

Ventilation opening

33

Housing sleeve

34

Outlet

35

Elevation

36

head Start

37

Carrier plate

38

Main flow direction

39

profile

40

Profile expansion

Claims (19)

Sanitary installation part (1), with a functional unit (2) and a diffuser (3) formed downstream behind the functional unit (2), the functional unit (2) forming at least one inlet opening (5, 5 ') to a diffuser space (6) , wherein the diffuser (3) has a baffle plate (7) delimiting the diffuser space (6) in a direction of flow predetermined by the at least one inlet opening (5, 5 '), which baffle plate (7) through the at least one inlet opening (5, 5') into deflects a lateral direction, the diffuser space (6) being formed between the baffle plate (7) and the functional unit (2) and having an outlet opening (9) through which water entering through the at least one inlet opening (5, 5 ') is completely discharged exits the diffuser space (6), characterized in that the baffle plate (7) is essentially flat and / or unobstructed on a side facing the diffuser space (6) and / or at its outer edge (11) umla calling is open. Sanitary installation part (1) according to the preamble of claim 1 or according to claim 1, characterized in that the diffuser space (6) has at least two inlet openings (5, 5 ') spaced from one another along a main flow direction (38) and that the diffuser space (6) has a profile (39) along the main flow direction (38) which has a profile widening (40), in particular as a profile ramp, between the spaced-apart inlet openings (5, 5 ') and / or on the downstream of the at least two inlet openings (5, 5') (41), defined, in particular wherein the profile widening (40) is an enlargement of a cross-sectional area of the diffuser space (6) transversely to the Main flow direction (38) defined, which is matched to a cross-sectional area of the downstream inlet opening (5 '). Sanitary installation part (1) according to one of the preceding claims, characterized in that the at least one inlet opening (5, 5 ') is constructed in several parts and / or divided and / or that the at least one inlet opening (5, 5') has a total inflow area to the diffuser space (6) defined. Sanitary installation part (1) according to one of the preceding claims, characterized in that the baffle plate (7) is delimited on all sides by a cross-sectional expansion for the flowing water, preferably formed by a step (12). Sanitary installation part (1) according to one of the preceding claims, characterized in that the at least one inlet opening (5, 5 ') of the baffle plate (7) is arranged opposite and / or in the middle or central to the baffle plate (7) and / or that a carrier plate (37) of the functional unit (2) is preferably supported centrally on the baffle plate (7). Sanitary installation part (1) according to one of the preceding claims, characterized in that , preferably on the baffle plate (7) and / or on the functional unit (2), in the center of the inlet opening (5, 5 ') in the diffuser space (6), a flow divider ( 14) is formed. Sanitary installation part (1) according to one of the preceding claims, characterized in that the functional unit (2) has at least one flow regulator (15, 16) and / or at least one throttle, in particular wherein the functional unit (2) has two in the direction of flow has quantity regulators (15, 16) connected in parallel, preferably arranged concentrically to one another. Sanitary installation part (1) according to one of the preceding claims, characterized in that a jet ventilation device (17) is connected downstream of the diffuser (3). Sanitary built-in part (1) according to one of the preceding claims, characterized in that the diffuser space (6), at least outside the or a profile widening (40), has an essentially constant height. Sanitary installation part (1) according to one of the preceding claims, characterized in that the diffuser space (6) forms a flow straightener (29) that is preferably low in obstacles or even without obstacles. Sanitary built-in part (1) according to one of the preceding claims, characterized in that a height of the diffuser space (6) is less than half the height of a downstream collecting chamber (18). Sanitary built-in part (1) according to one of the preceding claims, characterized in that an annular chamber (24) is connected downstream in a flow direction of a diffuser (3) which opens into at least one outlet nozzle (25), that on the outflow side the at least one outlet nozzle (25 ) at least one ventilation opening (32) is formed, via which outside air can be supplied to generate a ventilated water jet, and that the annular chamber (24) above the at least one outlet nozzle (25) has a contour in a longitudinal section in which an ellipse (26 , 28) which has an aspect ratio of greater than 0.433, preferably greater than or equal to 0.45, particularly preferably greater than or equal to 0.5 or even 0.6, a small semi-axis to a large semi-axis. Sanitary installation part (1), according to one of the preceding claims, characterized in that an annular chamber (24) is connected downstream in a flow direction of a diffuser (3) which opens into at least one outlet nozzle (25) that behind the at least one outlet nozzle (25 ) at least one ventilation opening (32) is formed, via which outside air can be supplied to generate a ventilated water jet, that between the diffuser (3) and the annular chamber (24) an inflowing water into the annular chamber (24) leading guide surface (27) is formed and that the annular chamber (24) in a partial annular chamber (31) located above an extension of the guide surface (27) in the annular chamber (24) has a contour in a longitudinal section into which an ellipse (26, 28) can be fitted which has an aspect ratio of greater than 0.52, preferably greater than or equal to 0.55, particularly preferably greater than or equal to 0.6 or even 0.69, of a small semi-axis to a large half has axis. Sanitary installation part (1) according to one of the preceding claims, characterized in that the annular chamber (24) has a quadrangular, in particular parallelogram-shaped, longitudinal section. Sanitary installation part (1) according to one of the preceding claims, characterized in that an upper cover is placed on projections projecting into the annular chamber (24). Sanitary installation part (1) according to one of the preceding claims, characterized in that downstream of the outlet nozzle (25) several ventilation openings (32) a circumference of the built-in part (1) are preferably arranged evenly distributed. Sanitary installation part (1) according to one of the preceding claims, characterized in that the outlet nozzle (25) is formed by an annular gap. Sanitary installation part (1) according to one of the preceding claims, characterized in that the annular chamber (24) is arranged offset downwards in a longitudinal section with respect to an upstream collecting chamber (18) and / or that the annular chamber (24) is above and below one or the guide surface (27) extends. Sanitary installation part (1) according to one of the preceding claims, characterized in that a plurality of through openings (19) spaced apart from one another are formed between the collecting chamber (18) and the annular chamber (24).

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