CN113338399A

CN113338399A - Sanitary water outlet unit

Info

Publication number: CN113338399A
Application number: CN202110226056.9A
Authority: CN
Inventors: T·基弗
Original assignee: Neoperl GmbH
Current assignee: Neoperl GmbH
Priority date: 2020-03-02
Filing date: 2021-03-01
Publication date: 2021-09-03
Also published as: DE202020101136U1; EP3875699A1

Abstract

The invention relates to a sanitary outlet unit (108) having a jet regulator (3), wherein the jet regulator (3) has an inflow-side jet splitter (4) which splits the inflowing water into a plurality of individual jets and has an outflow-side hole structure consisting of a plurality of jet openings (6) through which the water flows out of the jet regulator (3) in the form of separate jet streams; and the sanitary outlet unit has an outlet fitting (1) which has a connecting thread (2) at least in the region of its inflow-side circumferential section, with which the outlet fitting can be screwed onto a mating thread at the outlet of the sanitary outlet fitting. The sanitary outlet unit is characterized in particular in that the outlet fitting (1) has a triangular or quadrangular cross section on the outer circumference side, and that lines extending through the corner points of the hole pattern formed by the spray openings (6) define triangles or quadrangles of the same shape.

Description

Sanitary water outlet unit

Technical Field

The invention relates to a sanitary outlet unit having a jet regulator with an inflow-side jet splitter having splitter openings which divide the inflowing water into a plurality of individual jets and having an outflow-side hole structure consisting of a plurality of spray openings through which the water flows out of the jet regulator in the form of separate spray jets; and the sanitary outlet unit has an outlet fitting which has a connecting thread at least in a peripheral partial region of its inflow side, with which the outlet fitting can be screwed onto a mating thread at the outlet of the sanitary outlet fitting.

Background

It is already known to install jet regulators at the outlet of sanitary outlet fittings in order to form water flowing out there, for example, into a uniform, non-splashing and, if appropriate, beaded, soft water jet.

Jet regulators have also been realized which enable water flowing out at the outlet portion of a sanitary outlet fitting to flow out in single jets separated from each other. Some of these outlet units, also referred to as jet regulators, of the type mentioned at the outset have an outlet fitting which, in the region of its inflow-side circumferential section, has a connecting thread on the inside or outside, with which the outlet fitting can be screwed onto a mating thread at the outlet of the sanitary outlet fitting. These known outlet units have an inflow-side jet splitter which splits the inflowing water into a plurality of individual jets which then flow in the interior of the outlet fitting to an outflow-side hole arrangement which has a plurality of spray openings through which the water flows out of the jet regulator in the form of separate spray jets.

Efforts have also been made to give characteristic shapes to different sanitary outlet fittings of different manufacturers. In this case, the outlet fitting is also formed with a quadrangular or in any other way non-circular cross section on the outer circumference side in the region of its outlet opening, in contrast to a generally circular outlet cross section. In this case, the problem is that the outlet fitting of the sanitary outlet unit is also mounted on the noncircular outlet of the sanitary outlet fitting by means of a screw connection, which is usually assumed by the circular cross section of the two parts connected to one another at least in the region of the screw connection.

Disclosure of Invention

The object of the invention is therefore, in particular, to provide a sanitary outlet unit of the type mentioned at the outset, in which the jet shape of the exiting water is adapted in the region of its outlet to the non-circular cross section of the sanitary fitting.

The solution according to the invention of the object is achieved in a sanitary outlet unit of the type mentioned at the outset in particular in that the edge-side spray opening of the outlet-side opening structure is arranged outside a circular surface, which is axially projected in the direction of the opening structure and which is formed by the splitter opening of the inlet-side jet splitter.

In addition or alternatively, another solution of the object according to the invention is in particular to provide a sanitary outlet unit of the type mentioned at the outset in which the outlet connection piece has a triangular or quadrangular or polygonal cross section on the outer circumference and a line extending through an angle point of the hole pattern formed by the spray openings defines a triangle, quadrangle or polygon of the same shape.

The sanitary outlet unit according to the invention has a jet regulator with an inflow-side jet splitter which divides the inflowing water into a plurality of individual jets inside the jet regulator. The water thus divided and agitated in the jet regulator flows to the hole structure which forms the outflow side of the jet regulator, where it flows out of the outlet unit. The hole structure has a plurality of spray openings through which the water flows out of the jet regulator in the form of separate spray jets. The jet regulator is arranged in a water outlet fitting which has a connecting thread on its inflow-side circumferential partial region on the inside or outside, with which the water outlet fitting can be screwed onto an external or internal thread at the water outlet of the sanitary water outlet fitting. In order to be able to design the outlet piece so as to match the non-circular outlet cross-sectional shape of the sanitary outlet fitting in its outer circumference, the outlet piece has a triangular or quadrangular or polygonal cross-section, for example, on the outer circumferential side. In order to discharge the outflowing water with a non-circular and in particular triangular, quadrangular or polygonal jet cross section, although the outlet fitting of the outlet unit according to the invention can be screwed onto a mating thread on the outflow part of the sanitary outlet fitting and although the outlet fitting therefore has a circular cross section at least in this region, the solution according to the invention provides that the injection opening on the edge of the outlet-side hole structure is arranged outside a circular surface projected axially in the direction of the hole structure, which circular surface is formed by the splitter openings of the inlet-side jet splitter.

In order to achieve a shape-matched outflow of the outflowing water, in particular with a triangular or quadrangular or polygonal jet cross section, a further invention proposes that lines extending through the corner points of the hole pattern formed by the spray openings define triangles, quadrangles or polygons of the same shape. The water jet issuing in the form of separate spray jets thus has a triangular or quadrangular or polygonal jet cross section and is therefore uniform with respect to the outer periphery of the water outlet fitting. Since the noncircular jet cross section of the outflowing water is shaped by the separate injection jets, it is ensured that the outflowing water also retains its noncircular, that is to say triangular or quadrangular or polygonal, pattern of the outflowing jets over a longer distance without the water forcibly attempting to change to an unstable circular jet cross section.

Advantageously, the spray openings are arranged on the inlet side in parallel rows spaced apart from one another. In this way, the jet jets can be distributed substantially uniformly over the jet cross section.

According to a structurally simple and easily producible embodiment of the invention, the jet splitter is designed as a perforated plate having a plurality of splitter openings spaced apart from one another.

It is advantageous here if the splitter openings of the jet splitter, which is embodied as a perforated plate, are arranged in mutually concentric hole circles.

In contrast, according to a further embodiment of the invention, it is provided that the jet splitter is designed as a diffuser having a pot-shaped diffuser insert with a pot bottom serving as a baffle surface, and that splitter openings spaced apart from one another are provided in the circumferential direction on the pot circumference of the pot-shaped diffuser insert, which open into an annular gap narrowing in the flow direction. If the jet regulator is designed as a diffuser, the inflowing water can also be divided well in the low-pressure region into individual jets which are subsequently shaped as jet jets in the hole structure on the outflow side. The diffuser has a pot-shaped diffuser insert with a pot bottom which acts as a baffle for the inflowing water. On the baffle surface, the water flowing to the jet splitter is braked and deflected radially outward, where splitter openings spaced apart from one another in the circumferential direction are provided on the circumference of the pot-shaped diffuser insert. These openings open into an annular gap which narrows in the flow direction. Since the annular gap narrows in the flow direction, a negative pressure is generated according to the bernoulli equation on the outflow side of the annular gap, which negative pressure can also be used to suck ambient air in the gas-filled jet regulator if required.

According to a preferred embodiment of the invention, the diffuser insert is inserted into the diffuser ring of the diffuser from the inflow side, preferably detachably, and the diffuser insert and the diffuser ring define an annular gap between themselves.

The non-circular appearance of the water flowing out of the outlet unit according to the invention is determined in particular by the spray openings forming the corner points of the hole pattern. In order to additionally facilitate this characteristic influencing effect of the jet jets occurring in the corner regions, it is advantageous if the jet openings arranged in the corner regions of the hole pattern of the hole structure have a larger net flow cross section than the remaining jet openings of the hole structure.

In order to facilitate the cleaning effect of the water flowing out of the jet jets and in order for these jet jets not to flow together in an uncontrolled manner over the longest possible path, it is advantageous if the longitudinal axes of the jet openings in the outer region of the bore structure are angled outwards.

When the longitudinal axis of the jet openings arranged in the central region of the orifice structure extends substantially coaxially with the longitudinal axis of the jet regulator, and when the remaining jet openings are angled increasingly outward toward the outer region of the orifice structure, a uniform distribution of the jet in the jet cross section of the total jet resulting therefrom is facilitated.

When the jet splitter has a circular outer circumference, it is already advantageous in the interior of the jet regulator of the outlet unit according to the invention for the jet to be distributed uniformly over the entire jet cross section of the exiting water.

For this purpose, in a preferred embodiment according to the invention, it is provided that the diffuser insert and/or the diffuser ring have a circular outer circumference.

According to a structurally simple and relatively easy-to-manufacture embodiment of the invention, the jet regulator has a jet regulator housing which is cup-shaped at least in a partial region on the outflow side thereof and the cup bottom of the cup-shaped housing partial region is formed by a hole structure having an injection opening.

In order to be able to produce the jet regulator used in the outlet unit according to the invention with as little effort as possible, even if the jet regulator housing also has a circular cross section in the region of the threaded connection of the outlet unit according to the invention, which cross section merges in the region of the outlet-side hole structure into a triangular or quadrangular or polygonal cross section, it is advantageous if the jet regulator has an at least two-part jet regulator housing and has at least one inlet-side housing part and at least one outlet-side pot-shaped housing part.

In this case, according to a preferred embodiment of the invention, it is provided that the at least one inflow-side housing part can be inserted into the outlet fitting from the inflow side up to a first insertion stop, and that the at least one outflow-side housing part can be inserted into the outlet fitting from the outflow side up to a second insertion stop.

In order to fit these housing parts in the outlet fitting of the outlet unit according to the invention in a manner that they cannot be lost, but can also be easily disassembled if necessary, it can be expedient for the at least one inflow-side housing part and the at least one outflow-side housing part to be able to be nested, preferably detachably, in the outlet fitting.

According to a further advantageous embodiment of the invention, it is provided that the at least one outlet-side housing part is designed as a hollow body which has a triangular, quadrangular or polygonal cross section on the outer circumference which is matched to the shape of the outlet connection part, and that the hollow body has a circular insertion opening on its inlet-side end face for inserting the at least one inlet-side housing part which is circular on the outer circumference in cross section.

In order to install the jet splitter in the outlet fitting of the outlet unit according to the invention, it is advantageous if a perforated plate with splitter openings can be inserted into the outlet fitting from the inflow side of the outlet fitting up to the insertion stop.

Drawings

Further developments of the invention result from the figures in combination with the claims and the description. Preferred embodiments of the present invention will be described in detail below.

In the drawings:

fig. 1 shows a sanitary outlet unit, in which a jet regulator is arranged in an outlet fitting whose outer circumference is of a quadrilateral shape, which jet regulator enables water flowing through to flow out on the outlet end face of the outlet unit in mutually separate jet streams, wherein the outlet unit is shown here in a perspective top view on its inflow side,

fig. 2 shows the outlet unit from fig. 1 in a perspective top view of the outlet side of the outlet unit, wherein a hole structure is visible on the outlet side of the outlet unit, which hole structure has a plurality of spray openings through which water flows out of the jet regulator in the form of separate spray jets,

figure 3 shows the outlet unit of figures 1 and 2 in a top view of the outlet side of the outlet unit,

figure 4 shows the outlet unit of figures 1 to 3 in a side view,

figure 5 shows the outlet unit of figures 1 to 4 from above with the inflow side of the outlet unit,

fig. 6 shows a water outlet unit with a jet regulator arranged in the water outlet fitting, wherein the water outlet unit is shown in the water outlet unit shown in fig. 1 to 5 in a longitudinal section through section plane VI-VI according to fig. 4,

figure 7 shows in an exploded perspective part view the components constituting the outlet unit according to figures 1 to 6,

fig. 8 shows a further outlet unit, which is likewise of quadrangular design on the outer circumference, which outlet fitting can be mounted on the outlet part of the sanitary outlet fitting, wherein the outlet unit is shown in fig. 8 in an exploded perspective detail view of its component parts,

figure 9 shows the outlet unit of figure 8 in a side view,

figure 10 shows the water outlet unit in figures 8 and 9 in a longitudinal section according to section plane X-X of figure 9,

figure 11 illustrates another outlet unit with its component parts exploded with a water outlet interface piece having a quadrilateral shape on the peripheral side,

figure 12 shows the tapping unit in figure 11 in a side view,

figure 13 shows the outlet unit in figures 11 and 12 in a longitudinal section through section XII-XII according to figure 12,

fig. 14 shows a further exemplary embodiment of a sanitary outlet unit, wherein the outlet unit shown in fig. 14 has an outlet fitting which is triangularly shaped on the outer circumference and in which a jet regulator is arranged, and wherein the outlet unit is shown here in a perspective top view on the inflow side of the outlet unit,

fig. 15 shows the outlet block from fig. 14 in a perspective top view of the outlet side of the outlet block, wherein the hole structure of the outlet side with a plurality of spray openings is visible, and wherein a line extending through a corner point of the hole pattern formed by the spray openings here likewise defines a triangle,

figure 16 shows the sanitary outlet unit of figures 14 and 15 in a top view of the outlet side of the outlet unit,

fig. 17 shows an exemplary outlet unit, which has already been illustrated in fig. 1 to 7, in a plan view of the inflow side, wherein a diffuser with a pot-shaped diffuser insert can be seen, and wherein the spray openings provided in the hole structure of the outflow side are shown by dashed lines, and

fig. 18 shows an exemplary outlet unit, which has already been shown in fig. 11 to 13, in a plan view of the inflow side, wherein the perforated plate serving as a jet splitter can be seen together with its splitter openings, and wherein the spray openings of the hole structure of the outflow side are shown by dashed lines.

Detailed Description

Fig. 1 to 18 show various embodiments of

sanitary outlet units

100, 108, 111, 114. The

outlet unit

100, 108, 111, 114 shown here has an outlet fitting 1 which has a connecting thread 2 at least in the region of its inflow-side circumferential section, with which the outlet fitting 1 can be screwed onto a mating thread at the outlet of a sanitary outlet fitting, not shown in detail here. The connecting thread 2 is designed here as an internal thread, which in a corresponding design of the outlet fitting 1 can also be designed as an external thread. As is clear from a comparison of fig. 1 to 18, the water outlet fitting has a triangular or quadrangular cross section on the outer circumferential side, but if necessary also has a polygonal cross section. The outlet fittings 1 of the

outlet units

100, 108 and 111 shown in fig. 1 to 13 and 17 to 18 have a quadrangular cross section on the outer circumferential side, while the outlet units 114 shown in fig. 14 to 16 are configured with a triangular cross section on the outer circumferential side.

As is apparent from fig. 1, 5 to 7, 8, 10, 11, 13, 14 and 17 to 18, the

outlet units

100, 108, 111 and 114 shown here have a jet regulator 3 with an inflow-

side jet splitter

4 or 5 which splits the inflowing water into a plurality of individual jets. The jet regulator 3 has a hole structure on the outflow side, which is shown in detail in fig. 2, 3, 6, 8, 10, 13 and 15 to 16 and is formed by a plurality of jet openings 6, through which the water flows out of the jet regulator 3 in the form of separate jet streams. In order to be able to design the outlet fitting 1 of the

outlet units

100, 108, 111 and 114 to be matched in shape on its outer circumference to the non-circular outlet cross section of the sanitary outlet fitting, the outlet fitting 1 of the

outlet units

100, 108, 111 and 114 is likewise triangular, quadrangular or polygonal in cross section on the outer circumference side and is therefore configured to be of the same shape. In order to also shape-match the exiting water in a triangular, quadrangular or polygonal jet cross section, provision is made for: lines extending through the corner points of the hole pattern constituted by said ejection openings 6 define triangles, quadrilaterals or polygons corresponding to the same shape. Since the noncircular jet cross section of the outflowing water is shaped by the separate jet jets, it is ensured that the outflowing water also retains its noncircular, that is to say triangular or quadrangular or polygonal, pattern of the outflowing water jets over a longer distance of the water jet, without the water forcibly attempting to change to an unstable circular jet cross section. As can be seen in fig. 2, 3, 8, 15, 16 and 17 to 18, the spray openings 6 forming the hole structure on the outflow side are arranged on the inlet side in parallel rows spaced apart from one another. In this way, it is ensured that the water flowing out of the hole structure on the outflow side of the jet regulator 3 flows out in a substantially uniformly distributed manner over the entire jet cross section of the outlet jet.

As is apparent from a comparison of fig. 13 and 18 on the one hand and fig. 1 to 12 and 14 to 17 on the other hand, the jet splitter 3 provided in the jet regulator 3 of the

outlet units

100, 108, 111 and 114 can be designed as a perforated plate or as a diffuser. The jet splitter 5 of the outlet water unit 111 depicted in fig. 11 to 13 and 18 is therefore configured as a perforated plate with a plurality of splitter openings 7 spaced apart from one another. These resolver openings 7 of the jet resolver 5, which is configured as an orifice plate, are arranged in orifice circles which are concentric to one another.

In contrast, the jet splitter 4 of the

outlet units

100, 108 and 114 shown in fig. 1 to 10 and 14 to 17 is designed as a diffuser having a pot-shaped diffuser insert 8 with a pot bottom serving as a baffle surface 9. On the circumference of the pot-shaped diffuser insert 8, circumferentially spaced-apart splitter openings 10 are provided, which open into an annular gap 11 that narrows in the flow direction Pf 1. As can be seen in fig. 6, 7, 8 and 10, the diffuser insert 8 can be inserted, preferably detachably, into a diffuser collar 12 of the diffuser 4 from the inflow side. The diffuser insert 8 and the diffuser ring 12 define an annular gap 11 which narrows in the flow direction.

As can be seen from the longitudinal section views in fig. 6, 10 and 13 and from the plan views in fig. 17 and 18, the edge-side jet openings 6 in the outlet-side bore structure are arranged outside a circular surface, which is axially projected in the direction of the bore structure and is formed by the splitter openings 7 of the inlet-

side jet splitters

4, 5. As can be seen in fig. 6, 10, 13 and 17 to 18, the longitudinal axis of the spray opening 6 in the bore structure on the outflow side is angled outwards in the outer region of the bore structure. In contrast, the longitudinal axis of the jet openings 6 arranged in the central region of the hole structure extends approximately coaxially to the longitudinal axis of the jet regulator 3, while the remaining jet openings 6 are angled gradually outward toward the outer region of the hole structure.

As can be seen from the longitudinal sectional views in fig. 6, 10 and 13, the

jet splitters

4, 5 of the

outlet units

100, 108, 111 and 114 have a circular outer circumference. For this purpose, in the

outlet units

100, 108 and 114, the diffuser insert 8 and the diffuser ring 12 are each designed with a circular outer circumference.

While the components of the jet regulator 3 in the outlet unit 108 shown in fig. 8 to 10 are inserted directly into the outlet fitting 1 from the inflow side, the jet regulator 3 of the

outlet units

100, 111 and 114 has a jet regulator housing which is cup-shaped at least in its partial region on the outflow side. The pot bottom in the region of the pot-shaped housing part is formed by a hole structure with the spray opening 6. In the

outlet units

100, 111 and 114 shown here, the jet regulator 3 has an at least two-part jet regulator housing and has at least one inflow-side housing part 13 and at least one outflow-side pot-shaped housing part 14. As can be seen from fig. 13, in the outlet unit 111 shown there, the at least one inlet-side housing part 13 can be inserted into the outlet fitting 1 from the inlet side as far as the first insertion stop 15, while the outlet-side housing part of the outlet unit 111 is inserted into the outlet fitting 1 from the outlet side as far as the second insertion stop 16. In this case, the inflow-side housing part 13 and the outflow-side housing part 14 are locked in place in the outlet fitting 1 of the outlet unit 111 in such a way that these

housing parts

13, 14 clamp the annular flanges 17, which form the insertion stops 15, 16, between themselves on the inner circumference of the outlet fitting 1.

As can be seen from a comparison of fig. 6 and 7, the housing part 14 on the outflow side of the outlet unit 100 can be designed as a hollow body which has a triangular, or in this case quadrangular or polygonal, cross section on the outer circumference side which is adapted to the shape of the outlet fitting 1. The hollow body, which is rectangular in cross section in this case, has a circular insertion opening 19 on its inflow-side end face, into which the inflow-side housing part 13, which is circular on the outer circumference side in cross section, can be inserted.

In the outlet unit 108 shown in fig. 8 to 10, the diffuser with the splitter openings 10 on the one hand and the plate-shaped hole structure 18 with the spray openings 6 on the other hand can each be inserted into the outlet fitting 1 from the outflow side of the outlet fitting 1 up to an insertion stop and possibly clamped there.

In the exemplary embodiment shown in fig. 11 to 13, the jet regulator 111 has a multi-part housing, wherein the housing part 13 on the inflow side, which is circular in cross section, can be snapped into the insertion opening of the housing part 14 on the outflow side, which is cuboid. During the insertion of the cuboid outlet-side housing part 14 from the outlet side into the likewise cuboid outlet-side receiving opening of the outlet fitting 1, the circular inlet-side insert part 13 is pushed into the outlet fitting 1 until the outer circumferential annular shoulder on the inlet-side housing part 13 rests against the annular shoulder in the sleeve interior of the outlet fitting 1, which serves as an insertion stop, and the inlet-side housing part 13 is latched in the insertion opening of the cuboid outlet-side housing part 14. In the longitudinal section in fig. 13, it can be seen that the jet splitter 5 is in this case embodied as a perforated plate which is integrally formed into the housing part 13 on the inflow side and which, in its plate plane oriented transversely to the flow direction, has splitter openings 7 oriented axially parallel to the jet splitter longitudinal axis. In contrast, the jet openings 6 are angled increasingly outward from the center on the outflow-side end side of the jet regulator 3.

Fig. 17 and 18 show that the jet openings 6 arranged in the corner points of the hole pattern of the hole structure have a larger net flow cross section than the remaining jet openings 6 of the hole structure.

List of reference numerals

1 Water outlet interface

2 connecting screw thread

3 jet regulator

4 jet splitter

5 jet flow decomposer

6 spray opening

7 resolver opening

8 diffuser insert

9 deflecting surface

10 resolver opening

11 annular gap

12 diffuser ring

13 housing part on inflow side

14 housing part on the outflow side

15 first insertion stop

16 second insertion stop

17 annular flange

18-hole plate

19 insert opening

100 Water Outlet Unit according to FIGS. 1 to 7, 17

108 Water Outlet Unit according to FIGS. 8 to 10

111 the water outlet unit according to fig. 11 to 13 and 18

114 Water Outlet Unit according to FIGS. 14 to 16

Flow direction of Pf1 through water outlet unit

Claims

1. Sanitary outlet unit (100, 108, 111, 114) having a jet regulator (3), the jet regulator (3) having an inflow-side jet splitter (4; 5) with splitter openings (7) which split the inflowing water into a plurality of individual jets and having an outflow-side hole structure consisting of a plurality of jet openings (6) through which the water flows out of the jet regulator (3) in the form of separate jet jets; and the sanitary outlet unit has an outlet fitting (1) which has a connecting thread (2) at least in the region of its inflow-side circumferential section, with which the outlet fitting (1) can be screwed onto a mating thread at the outlet of the sanitary outlet fitting, characterized in that the outlet opening (6) on the edge of the outlet-side hole structure is arranged outside a circular surface projected axially in the direction of the hole structure, which circular surface is formed by the splitter openings (7) of the inflow-side jet splitters (4; 5).

2. Sanitary outlet unit (100, 108, 111, 114) according to the preamble of claim 1, in particular according to claim 1, characterized in that the outlet interface (1) has a triangular or quadrangular or polygonal cross section on the outer circumference side and that lines extending through the corner points of the aperture pattern constituted by the spray openings (6) define triangles, quadrangles or polygons of the same shape.

3. Sanitary outlet unit (100, 108, 111, 114) according to claim 1 or 2, characterized in that the spray openings (6) are arranged in parallel rows spaced apart from each other on the inlet side.

4. Sanitary outlet unit (111) according to one of the claims 1 to 3, characterized in that the jet splitter (5) is configured as a perforated plate with a plurality of splitter openings (7) spaced apart from one another.

5. Sanitary tapping unit (111) according to claim 4, wherein the aerator openings (7) of the jet aerator (5) configured as an orifice plate are arranged in orifice circles concentric to each other.

6. Sanitary outlet unit (100, 108, 114) according to one of claims 1 to 3, characterized in that the jet splitter (4) is configured as a diffuser with a pot-shaped diffuser insert (8) with a pot bottom serving as a baffle surface (9) and that on the circumference of the pot-shaped diffuser insert (8) there are provided splitter openings (7) spaced apart from one another in the circumferential direction, which open into an annular gap (11) narrowing in the flow through direction (Pf 1).

7. Sanitary outlet unit (100, 108, 114) according to claim 6, characterized in that the diffuser insert (8) can be inserted, preferably detachably, into the diffuser ring (12) of the diffuser from the inflow side, and the diffuser insert (8) and the diffuser ring (12) define an annular gap (11) between themselves.

8. Sanitary outlet unit (100, 108, 111, 114) according to any of claims 1 to 7, characterized in that the spray openings (6) arranged in the corner points of the hole pattern of the hole structure have a larger net flow cross section than the remaining spray openings (6) of the hole structure.

9. Sanitary outlet unit (100, 108, 111, 114) according to any of claims 1 to 8, characterized in that the longitudinal axis of the spray opening (6) in the outer region of the aperture structure is angled outwards.

10. Sanitary outlet unit (100, 108, 111, 114) according to any of claims 1 to 9, characterized in that the longitudinal axis of the spray openings (6) arranged in the central region of the hole structure extends substantially coaxially with the longitudinal axis of the jet regulator (3) and the remaining spray openings (6) are angled increasingly outwards towards the outer region of the hole structure.

11. Sanitary outlet unit (100, 108, 111, 114) according to any of claims 1 to 10, characterized in that the jet splitter (4; 5) has a circular outer circumference.

12. Sanitary outlet unit (100, 108, 111, 114) according to any of claims 1 to 11, characterized in that the diffuser insert (8) and/or diffuser ring (12) has a circular outer circumference.

13. Sanitary outlet unit (100, 111) according to one of claims 1 to 12, characterized in that the jet regulator (3) has a jet regulator housing which is pot-shaped at least in a partial region of its outflow side and the tank bottom of the pot-shaped housing partial region is formed by a hole structure with injection openings (6).

14. Sanitary outlet unit (100, 111) according to claim 13, characterized in that the jet regulator (3) has an at least two-part jet regulator housing and has at least one inflow-side housing part (13) and at least one outflow-side pot-shaped housing part (14).

15. Sanitary outlet unit (100, 111) according to claim 14, characterized in that the at least one inlet-side housing part (13) can be inserted into the outlet fitting (1) from the inlet side up to a first insertion stop (15) and the at least one outlet-side housing part (14) can be inserted into the outlet fitting (1) from the outlet side up to a second insertion stop (16).

16. Sanitary outlet unit (100, 111) according to claim 14 or 15, characterized in that the at least one inflow-side housing part (13) and the at least one outflow-side housing part (14) are latchable, preferably detachably, in the outlet fitting (1) nested in one another.

17. Sanitary outlet unit (100, 111) according to at least one of claims 14 to 16, characterized in that the at least one outlet-side housing part (14) is configured as a hollow body which has a triangular, quadrangular or polygonal cross section on the outer circumferential side which is matched in shape to the outlet fitting (1), and which has a circular insertion opening (19) on its inlet-side end face for inserting the at least one inlet-side housing part (13) which is circular in cross section on the outer circumferential side.

18. Sanitary outlet unit (108) according to any of claims 4 to 5 and 8 to 17, wherein the orifice plate with the resolver opening (7) can be inserted into the outlet from the inflow side of the outlet (1) up to an insertion stop.