EP3935230B1 - Aerator - Google Patents

Description

The invention relates to a jet regulator according to the preamble of claim 1.

Such jet regulators with diagonally running flow channels are already known. However, the production of such jet regulators, which are at least partially produced by injection molding, is relatively complex. This is particularly due to the fact that the two diagonally running flow channels have to be produced by two injection molding tool cores that have to be demolded in different directions. The production of previously known jet regulators is therefore relatively complex and expensive.

Common jet regulators are described, for example, in the publications GB2309181A and US4000857A disclosed.

The object is therefore to provide a jet regulator of the type mentioned above and a method for its production, in which the disadvantages mentioned are eliminated.

The object is achieved according to the invention by a jet regulator with the features of claim 1. According to the invention, a jet regulator of the type mentioned at the outset is proposed, wherein an insert part is inserted into a hole in a base body of the jet splitter device, so that the hole is divided into at least two obliquely running flow channels. It is thus possible to achieve the at least two-part design of the flow channels. Exit angle can be set more easily than with previously known methods. The hole in the base body can be produced using an injection molding core that is to be demolded in one direction, preferably perpendicular to the surface of the base body. The separately manufactured insert part can then be inserted into the hole, dividing the hole into at least two flow channels. This makes it much easier to produce the inclined flow channels. The flow channels can, for example, be aligned at an angle to a longitudinal axis of the housing and/or a main flow direction.

Advantageous embodiments of the invention are described below.

Alternatively or additionally, it can be provided that the crossing point mentioned is located in the associated hole or in its extension, for example below the hole. This enables outflow parallel or longitudinal to a housing axis.

According to the invention, the water jets flowing out of the flow channels meet at an intersection point, in particular, the intersection point being inside or outside the base body and/or in the associated hole or in its extension. According to a particularly preferred embodiment, the intersection point can be inside a space, for example a space downstream of the jet splitter device. More preferably, the intersection point can be inside an air inlet part and/or within a mixing section. This has the advantage that there is less noise during operation of the jet regulator than if the crossing point is within the jet splitter device.

It can also be provided that the insert part covers a hole, for example the hole already mentioned, in particular all such holes. This ensures in a simple manner that a flow is forced into the two flow channels. In this way, a main flow through one of the two flow channels at the expense of the other can be avoided.

According to a further advantageous embodiment of the jet regulator, one flow channel or both flow channels can be designed as a nozzle with a cross-sectional area that decreases in the main flow direction and/or along the channel path. This makes it possible for a negative pressure to be generated downstream of the nozzle or to be generated when the jet regulator is in use. The jet can also be accelerated by the nozzle. This can be used, for example, to accelerate the jet before it hits an impact surface in order to achieve the best possible mixing of the liquid components with air. The negative pressure generated can, for example, be used to suck in air from outside. The design as an atomizer nozzle, with which a spray mist can be generated, is particularly advantageous. This enables improved air mixing with the liquid components. This means that the negative pressure prevailing downstream of the nozzle can be constantly balanced.

Alternatively or additionally, one or both flow channels can be used as a diffuser with The jet can be designed with a cross-sectional area that widens in the main flow direction and/or along the channel path. This makes it possible for the jet to be slowed down by the flow channel designed as a diffuser.

In order to be able to generate an aerated jet using the jet regulator, a jet aeration device for mixing the liquid components with air can be arranged in the main flow direction after the jet splitter device. The jet aeration device can have at least one ventilation opening through which air can be sucked in from outside into the space due to the previously described negative pressure generated by the jet splitter device within a space of the jet aeration device. The sucked in air can be mixed with liquid components within the space, thereby generating an aerated jet.

According to a further advantageous embodiment of the jet regulator, the insert part can be inserted into a groove. In particular, the insert part can be inserted into a circumferential and/or inflow-side groove in the base body. This makes it easier to prevent the insert part from moving relative to the base body. Due to the pressure on the inflow side of the insert part during the inflow of water, the insert part is pressed into the groove. This makes it particularly easy to produce the flow channels, whereby by inserting the insert part into the groove, the insert part is arranged within the hole at a defined distance from the base body.

A particularly advantageous design of the jet regulator can provide that the insert part is ring-shaped. This allows a symmetrical jet pattern to be created. Alternatively, the insert part can also be plug-shaped. This makes it possible to provide a compact insert part. Alternatively or additionally, it can be provided that the insert part has a shape that tapers in the direction of flow. This simplifies the insertion of the insert part into the hole and/or into the groove when assembling the jet regulator. It is thus possible for the insert part to have a convex, in particular V-shaped, contour at least in an axial section.

The exit angles of the two flow channels can be defined by at least one wall of the base body forming the hole and an outer contour of the insert part. The side walls of the flow channels are therefore formed at least partially by the base body and at least partially by the insert part.

In order to better prevent the insert part from slipping out of the hole and/or the groove, the insert part is fixed to the base body by a holding device. The holding device is designed as at least one

The insert part has a locking projection on the top of the base body. This has the advantage that the insert part is better held on the base body, even if, for example, there is high water pressure. During assembly, the insert part can be inserted into the hole and/or into the groove against a resistance generated by the holding device by applying an assembly preload force. In the assembly position, the insert part is at least partially loaded by the holding device. In particular, the insert part is loaded by the holding device on an upper side facing away from a groove base.

According to an advantageous embodiment, the hole in the base body can be aligned perpendicular to the insert part. In particular, the hole can be aligned perpendicular to a direction of rotation of the insert part. The hole can, for example, be designed in the shape of a slot and/or aligned in the radial direction. A symmetrical jet can thus be generated through the flow channels.

The jet regulator can, for example, have several pairs or groups of flow channels, wherein the at least two flow channels of a pair or group are aligned obliquely such that the jets formed by the flow channels meet. The pairs or groups of flow channels can, for example, be formed circumferentially one after the other and/or at equal distances from one another.

In order to achieve particularly good liquid-air mixing, the liquid flowing through the at least two flow channels can subsequently impact an impact body of a jet aeration device, for example the jet aeration device already mentioned. The impact body can preferably have a conical shape and/or taper against the main flow direction. It can be particularly useful if several homogenization elements are arranged on an impact surface formed by the impact body.

In order to prevent leakage caused by the escape of spray water from a ventilation opening of the jet ventilation device, the jet regulator can have a perforated diaphragm arranged within a space of the jet ventilation device, which divides the space into an air inlet part and a mixing part, whereby the mixing part and the air inlet part are connected via a diaphragm opening of the perforated diaphragm. The perforated diaphragm can better prevent liquid from escaping from the jet aeration devices by retaining splash water in the mixing section.

According to a particularly preferred embodiment, it can be provided that an inflow opening and an outflow opening of at least one flow channel do not overlap with one another along the longitudinal axis. Turbulence within the flow channel can thus be better avoided, which results in less noise being generated.

According to a further advantageous embodiment, at least one flow channel or all flow channels can be designed to be step-free. In other words, this can mean that no walls are provided that run along or parallel to the longitudinal axis of the jet regulator and delimit the flow channels. In previously known jet regulators with such inclined flow channels, these have steps due to the manufacturing process in order to enable an injection molding tool to be removed from the mold during production. Due to the inventive design of the flow channels by means of an insert part inserted into a hole, it is possible to design the flow channels to be step-free. This has the advantage that turbulence can be better avoided in order to minimize the noise level when the jet regulator is in operation. A further advantage is that the flow channels can be set steeper in relation to a longitudinal axis of the jet regulator. In this way, a jet can be set sufficiently steep and it can be better prevented that a second non-oblique jet that can flow longitudinally through the flow channel collides with the deflected jet.

According to an advantageous development, the insert part can have at least two insert bodies, each of which is inserted into a hole in the base body, so that each hole is divided by the insert body into at least two obliquely running flow channels. This enables a larger flow per unit of time.

According to a particularly advantageous embodiment, it can be provided that the at least two insert bodies are connected to one another via a plurality of retaining webs. In particular, the retaining webs can be aligned in the radial direction and/or arranged circumferentially at regular intervals from one another.

According to a further advantageous embodiment, it can be provided that the base body has a mounting cone and the insert part has a recess provided for introducing the mounting cone, the inner wall of which is adapted to the shape of the mounting cone. Preferably, the mounting cone and the inner wall each have an octagonal cross-section. The mounting cone and the recess cannot be coupled arbitrarily, so that a relative alignment of the two to one another is predetermined by their shapes. This makes it easier to assemble the jet regulator.

The invention is also achieved by a method for producing a base body and/or a jet regulator with a jet splitter device having a base body with the features of the independent method claim, wherein the base body has at least two flow channels that are aligned obliquely and wherein the two outlet directions of the at least two flow channels meet. In particular, for producing a jet regulator, in particular as described herein described and claimed, it is proposed that the base body is produced by an injection molding process and that an insert part is inserted into a hole in the base body so that the hole is divided by the insert part into the at least two flow channels.

The flow channels can be aligned obliquely with respect to a longitudinal axis of the housing and/or with respect to a main flow direction and/or with respect to a normal vector on a surface of the base body.

This has the advantage that two injection molding cores that have to be demolded in different directions are not required to produce the base body. This makes the production of the base body and/or the jet regulator significantly easier compared to previous production processes for similar jet regulators.

The invention will now be described in more detail using several embodiments, but is not limited to these embodiments.

Fig. 1

perspektivische Darstellung einer Ausführungsvariante eines erfindungsgemäßen Strahlreglers,

Fig. 2

eine zum Teil geschnittene Darstellung der Ausführungsvariante des Strahlreglers aus Fig. 1,

Fig. 3

eine zum Teil geschnittene Darstellung einer Strahlzerlegereinrichtung, wobei das Einsetzteil in den Grundkörper eingesetzt ist, wobei im Kasten eine Detailansicht des umrahmten Bereichs gezeigt ist, in welchem das durch das Einsetzteil die Durchflusskanäle unterteilte Loch gezeigt ist,

Fig. 4

eine zum Teil geschnittene Darstellung einer Strahlzerlegereinrichtung, wobei das Einsetzteil aus dem Grundkörper herausgenommen ist,

Fig. 5

eine Explosionsdarstellung der Ausführungsvariante des Strahlreglers aus den Fig. 1-4,

Fig. 6

einen weiteren erfindungsgemäßen Strahlregler in Explosionsdarstellung,

Fig. 7

den Strahlregler aus Fig. 6 in teilweise aufgeschnittener Darstellung (links) und in einer Detailvergrößerung (oben rechts),

Fig. 8

den Strahlregler aus Fig. 6 in einer Ansicht von oben auf die Zuströmseite, wobei das Einsetzteil entnommen ist,

Fig. 9

einen Teil eines weiteren erfindungsgemäßen Strahlreglers in einer dreidimensionalen Schrägansicht auf die Zuströmseite,

Fig. 10

den Strahlregler aus Fig. 9 in teilweise aufgeschnittener Darstellung und

Fig. 11

den Strahlregler aus Fig. 9 in einer Ansicht auf die Zuströmseite,

Fig. 12

eine perspektivische Ansicht einer weiteren Ausführungsvariante eines erfindungsgemäßen Strahlreglers, wobei das Einsetzteil zwei Einsetzkörper aufweist, die über Haltestege miteinander verbunden sind,

Fig. 13

Draufsicht auf den Strahlregler aus Fig. 12,

Fig. 14

Schnittdarstellung des Strahlregler aus den Fig. 12 und 13, durch die in Fig. 13 gezeigte Schnittlinie,

Fig. 15

den Strahlregler aus den Fig. 12-14 mit in Strömungsrichtung der Strahlzerlegereinrichtung vorgelagertem Sieb,

Fig. 16

Explosionsdarstellung des Strahlreglers aus den Fig. 12-15.

It shows:

Fig.1

perspective view of a variant of a jet regulator according to the invention,

Fig.2

a partially cutaway view of the design variant of the jet regulator from Fig.1 ,

Fig.3

a partially sectioned view of a jet splitter device, with the insert part in the base body is inserted, with the box showing a detailed view of the framed area in which the hole divided by the insert part into the flow channels is shown,

Fig.4

a partially sectioned view of a jet splitter device, with the insert part removed from the base body,

Fig.5

an exploded view of the jet regulator variant from the Fig. 1-4 ,

Fig.6

another jet regulator according to the invention in exploded view,

Fig.7

the jet regulator Fig.6 in partially cutaway view (left) and in a detailed enlargement (top right),

Fig.8

the jet regulator Fig.6 in a view from above of the inflow side, with the insert part removed,

Fig.9

a part of another jet regulator according to the invention in a three-dimensional oblique view of the inflow side,

Fig.10

the jet regulator Fig.9 in partially cutaway view and

Fig. 11

the jet regulator Fig.9 in a view of the inflow side,

Fig. 12

a perspective view of a further embodiment of an inventive jet regulator, wherein the insert part has two insert bodies which are connected to each other via retaining webs,

Fig. 13

Top view of the jet regulator from Fig. 12 ,

Fig. 14

Sectional view of the jet regulator from the Fig. 12 and 13 , through which Fig. 13 shown cutting line,

Fig. 15

the jet regulator from the Fig. 12-14 with a sieve upstream of the jet splitter device in the flow direction,

Fig. 16

Exploded view of the jet regulator from the Fig. 12-15 .

In the Figures 1-16 a jet regulator is shown, designated as a whole with 1. The jet regulator 1 can be designed to be inserted into a sanitary outlet fitting.

The jet regulator 1 has a housing 2. For example, the housing 2 can have a coupling point that can be coupled to a corresponding counter-coupling point of a jet regulator holder on the outlet fitting. The housing 2 can be designed in several parts. For example, the housing 2 can have an upper housing part 25 and a lower housing part 26.

Furthermore, the jet regulator 1 has a jet splitter device 3, which is designed to split a single jet into several separate liquid components.

The jet splitter device 3 has at least one pair of two flow channels 4 or a group of more than two flow channels 4, which are aligned obliquely, in particular obliquely to a longitudinal axis 34 of the jet regulator 1, so that the jets formed by the flow channels 4 meet. In the embodiment shown, the flow channels 4 run towards one another. The exit directions 12 of the flow channels 4 thus intersect. The jet splitter device 3 can be formed at least partially by the upper housing part 25.

To produce the at least one pair or group of flow channels 4, an insert part 5 is inserted into a hole 6 of a base body 28 of the jet splitter device 3. The insert part 5 divides the hole 6 into the two flow channels 4 of the pair or group. The base body 28 can be designed as a perforated plate, for example.

It is therefore possible to dispense with several injection molding cores for forming the flow channels 4 when producing the jet regulator 1 and/or the base body 28 in an injection molding process. This has the advantage that the injection molding cores do not have to be demolded in different directions, in particular along the respective direction of the flow channels 4. The hole 6 in the base body 28 can be produced in an injection molding process, for example. This can therefore be done with just one injection molding core. This allows demolding in just one direction, which makes the manufacturing process of the jet regulator 1 significantly simpler and more cost-effective.

As in the Figures 3-5 As shown, the jet regulator 1 can have several pairs or groups of flow channels 4. For example, the pairs or groups of flow channels 4 can each be formed at equal distances from one another and/or lying on a circumferential path.

This makes it possible to produce a particularly symmetrical jet pattern and/or a particularly good division of the individual jet into separate liquid components.

The liquid flowing out of the at least two flow channels 4 of a pair or group forms a liquid jet at an outlet opening of each flow channel 4. The two liquid jets emerging from the flow channels 4 of a pair or group meet at an intersection point 7. The intersection point 7 can be located inside or outside the base body 28. Different jet properties can thus be generated.

Behind the intersection point 7, the emerging partial beam can have a constant cross-section.

The Figures 2-5 The flow channels 4 shown are each designed as a nozzle 8. A cross-sectional area of the respective flow channel 4 therefore decreases along the course of the flow channel 4 and/or in the main flow direction 9. The nozzle 8 can be used to accelerate the jet. Preferably, the nozzle 8 can be designed as an atomizer nozzle, in particular for producing a spray mist, which, due to the atomization of the liquid components, leads to improved jet ventilation due to the generation of a negative pressure and the intake of air.

According to a further embodiment variant not shown in the figures, the flow channels 4 can also be designed as a diffuser. A cross-sectional area of the respective flow channel 4 expands along the course of the flow channel 4 and/or in the main flow direction 9. The diffuser can be used for can be used to slow down the beam.

A flow rate regulator 24 can be connected upstream of the jet splitter device 3 in the main flow direction 9. This ensures that a defined volume flow always flows into the jet splitter device 3 and that the jet regulator 1 produces an outlet jet pattern that is as consistent as possible.

In the main flow direction 9, a jet ventilation device 10 can be arranged downstream of the jet splitter device 3. The jet ventilation device 10 can suck in air from outside via a ventilation opening, the sucked-in air being mixed with the liquid components in a space 19. The previously described nozzle 8 can generate a negative pressure within the space 19, through which ambient air is sucked in from outside via a ventilation opening 31.

The at least one previously mentioned intersection point 7 of the liquid jets emerging from the flow channels 4 of a pair or from the group is located within the space 19 in the embodiment shown. This has the advantage that the noise emission generated during the flow of a fluid is significantly lower than in previously known jet regulators. In previously known jet regulators, which can also be set up so that liquid jets intersect at an intersection point, this intersection point is usually located within the base body 28. However, this leads to vibrations in the jet splitter device 3 and thus increases the noise level during operation of the jet regulator.

In the assembled state, the insert part 5 is inserted into a groove 11 and held therein. The groove 11 can, for example, ring-shaped and/or circumferential. In the case of Figure 5 In the embodiment shown, the groove 11 is formed on an upper side 16 of the base body 28. A groove base of the groove 11 is penetrated by the at least one hole 6. The hole 6 can thus also be formed at least partially through the groove 11. The groove 11 is preferably open on the inflow side in the main flow direction 9 in order to be able to accommodate the insert part 5. When the insert part 5 is inserted, it can therefore be pressed into the groove 11 by the pressure of the inflowing liquid.

The insert part 5 has, as shown in the Figures 3 and 4 can be clearly seen, has a shape that tapers in the main flow direction 9 and/or in a longitudinal direction of the housing 2. In particular, a cross section of the insert part 5 can have a tapered shape in the main flow direction 9 and/or in the longitudinal direction of the housing 2.

The insert part 5 of the Figures 1-5 The embodiment shown is designed in the form of a ring.

On an upper side of the insert part 5, a plurality of adjustment aids 29 are arranged at a distance from one another. For example, the adjustment aids 29 can each be designed as a pin that protrudes in particular in the axial direction. The adjustment aids 29 can serve to more easily achieve correct alignment of components arranged on the inflow side to the jet splitter device 3. For example, an inflow opening arranged upstream of the jet splitter device 3 can be arranged in alignment with the flow channels 4.

An exit angle 12 of a flow channel 4 can be defined by both the base body 28 and the insert part 5. For example, a wall 13 of the hole 6 and a Outer contour 14 of the insert part 5 forms a channel wall defining the course of the flow channel 4.

A holding device 15 can be arranged or formed on the base body 28. For example, the holding device 15 can be designed on an upper side 16 of the base body 28. In the versions of the holding device 15 shown in the figures, this has several locking projections 17 arranged on the edge of the groove 11, the free ends of which are arranged at least partially above the groove 11. The insert part 5 is inserted into the groove 11 for assembly against a preload force formed by the locking projections 17. In the assembly position, an upper side of the insert part 5 is acted upon by the locking projections 17 and is thus held in the groove 11. This can prevent a clear opening dimension of the flow channels 4 from changing due to a relative movement of the insert part 5 to the base body 28, in particular during use of the jet regulator 1.

The hole 6 in the base body 28, which is divided into the at least two flow channels 4 in the assembly position, has, for example, a slot shape. A clear opening dimension of the hole 6 on the top side 16 of the base body 28 is designed to be larger than a clear opening dimension on the bottom side of the base body 28.

The slot-shaped hole 6 is designed transversely or perpendicularly to a direction of rotation and/or a longitudinal axis of the insert part 5. The openings of the at least two flow channels 4 on the upper side 16 of the base body 28 are separated from one another by the insert part 5. In particular, an opening of a flow channel 4 can be arranged on an inner circumference of the insert part 5 and an opening of a flow channel 4 can be arranged on an outer circumference of the insert part 5. border.

Downstream of the jet splitter device 3, as shown in the Figures 2 and 6 can be seen, an impact body 18 is arranged. The impact body 18 can be formed, for example, by the lower housing part 26. The impact body 18 can taper against the main flow direction 9 and/or upwards. Thus, the impact body 18, as in the Figures 2 and 6 can be seen, have a conical shape. The impact body 18 enables particularly good air-liquid mixing to be achieved.

The impact body 18 has an impact surface onto which the liquid components broken down by the jet splitter device 3 impinge within the jet aeration device 10. Several homogenization elements 27 are arranged or formed on the impact surface. The homogenization elements 27 can, for example, have a pin shape and/or a rod shape. In particular, the homogenization elements 27 can be aligned transversely to the impact surface and/or in the longitudinal direction of the housing 2. The homogenization elements 27 enable even better liquid-air mixing and a rectification of the liquid components. This makes it possible to produce a particularly attractive discharge jet pattern.

In order to better prevent splash water from escaping via the ventilation openings 31 of the jet ventilation device 10, a perforated diaphragm 20 is arranged in the space 19, which divides the space 19 into an air inlet part 21 and a mixing part 22. The air inlet part 21 and the mixing part 22 are connected to one another via a diaphragm opening 30 of the perforated diaphragm 20.

On the inflow side, the base body 28 is at least in the area of Flow channels 4 covered by a sieve.

The Figures 6 to 8 show a further embodiment according to the invention. Components and functional units that are functionally and/or structurally similar or identical to the previous embodiment are designated with the same reference numerals and are not described separately. The explanations for the Figures 1 to 5 are therefore among the Figures 6 to 8 accordingly.

The embodiment according to the Figures 6 to 8 differs from the preceding embodiment at least in that each hole 6 is assigned more than two flow channels 4, here three flow channels 4, which run in a star shape towards the hole 6.

The Figures 9 to 11 show a further embodiment according to the invention. Components and functional units that are functionally and/or structurally similar or identical to the previous embodiments are designated with the same reference numerals and are not described separately. The explanations for the Figures 1 to 8 are therefore among the Figures 9 to 11 accordingly.

The embodiment according to the Figures 9 to 11 differs from the preceding embodiment at least in that the hole 6 is assigned more than two flow channels 4, here seven flow channels 4, which run in a star shape towards the hole 6. In addition, only a single hole 6 is formed, which is covered with a (single) plug-shaped insert part 5 in order to limit the flow channels 4.

The embodiment according to the Figures 9 to 11 can also be fitted with a pinhole 20 in the manner described above. be equipped on the downstream side.

In general, it can be said that the insert part 5 has a V-shaped or otherwise convex contour at least in an axial section on its downstream side. The flow channels 4 running towards one another can thus be defined with a single insert part 5. The insert part 5 therefore has a tapering cross-section in the direction of flow.

The figures show that in the embodiments explained, the flow channels 4 run in a star shape towards the hole 6 assigned to them.

In further embodiments, each hole 6 (or the hole 6) is assigned a plurality, for example three, four, five, six or more, of flow channels 4, which are defined by an insert part 5. The insert part 5 can be formed in one or more parts and/or in the shape of a ring or plug.

The special feature of the design variant of the jet regulator 1 according to the Fig. 12-16 can be seen in that the insert part 5 has at least two insert bodies 35, which are each inserted into a hole 6 of the base body 28, so that each hole 6 is divided into at least two obliquely running flow channels 4. A number of holes 6 of the base body 28 thus corresponds to a number of insert bodies 35 which are formed by the insert part 5.

The insert bodies 35 are connected to one another via a plurality of retaining webs 36 of the insert part 5. The retaining webs 36 are each aligned in the radial direction and/or arranged circumferentially at regular intervals from one another. This embodiment of the jet regulator 1 thus has at least a further nozzle 8. The volume flow per unit of time can be increased compared to a design with an insert part that has only one insert body 35, since additional flow channels 4 are thus formed.

In contrast to the production of previously known jet regulators, there are no restrictions regarding the demolding of an injection molding tool for producing the flow channels 4. It is therefore possible for an inflow opening 32 and an outflow opening 33 of a flow channel 4 along the longitudinal axis 34 not to overlap. In other words, it can also be said that the inflow opening 32 and the outflow opening 33 are arranged offset from one another in the radial direction. This means that the noise development can be significantly reduced by avoiding the formation of turbulence.

Furthermore, the flow channels 4 do not have any steps to better avoid turbulence, but the structures delimiting the flow channels 4 are straight or almost straight or at least have no edges. This is possible because there is no need to demold a tool in the longitudinal direction.

The invention therefore relates in particular to a jet regulator 1 with a housing 2, a jet splitter device 3 arranged or formed in the housing 2 for splitting a single jet into several separate liquid portions, wherein the jet regulator 1 has at least two flow channels 4 which are aligned obliquely such that the outlet directions 12 defined by the flow channels 4 meet, wherein an insert part 5 is inserted into a hole 6 of a base body 28 of the jet splitter device 3, which hole 6 is aligned in particular in the longitudinal direction of the housing 2, so that the hole 6 in the at least two inclined flow channels 4.

List of reference symbols

1

Aerator

2

Housing

3

Beam splitter device

4

Flow channel

5

Insert part

6

Hole

7

Crossing point

8th

jet

9

(Main) flow direction

10

Jet ventilation device

11

Groove

12

Exit angle; exit direction

13

Wall of the base body

14

Outer contour of the insert part

15

Holding device

16

Top of the base body

17

Locking projection

18

Impact body

19

Space

20

Pinhole

21

Air inlet part

22

Mixing part

23

Sieve

24

Flow regulator

25

upper housing part

26

lower housing part

27

Homogenization element

28

Base body

29

Adjustment aid

30

Aperture opening

31

Ventilation opening

32

Inlet opening of the flow channel

33

Outlet opening of the flow channel

34

Longitudinal axis of the jet regulator

35

Insert body

36

Holding bridge

37

Mounting cone

38

Recess

39

Inner wall of the recess

40

Outlet page

Claims (16)

1. Aerator (1) with a housing (2), a stream-splitting device (3), arranged or formed in the housing (2), for the purpose of splitting an individual stream into a plurality of separate liquid portions, wherein the stream-splitting device (3) has at least two flow ducts (4) which are oriented obliquely in such a way that the streams formed by the flow ducts (4) meet each other, wherein an insert part (5) is inserted into a hole (6) of a base body (28) of the stream-splitting device (3) such that the hole (6) is divided into the at least two obliquely extending flow ducts (4), wherein the water streams that during use flow out of the flow ducts (4) meet at an intersection point (7), and wherein the insert part (5) is inserted into a groove (11) in the base body (28), and the insert part (5) is fixed on the base body (28) by a retaining device (15), characterized in that
   the retaining device (15) is formed as at least one latching projection (17) formed on an inflow-side upper side (16) of the base body (28).
2. Aerator according to Claim 1, characterized in that the insert part (5) has at least two insert bodies (35) which are inserted in each case into a hole (6) of the base body (28) such that each hole (6) is in each case divided into at least two obliquely extending flow ducts (4).
3. Aerator (1) according to Claim 2, characterized in that the at least two insert bodies (35) are connected to each other via a plurality of retaining webs (36), in particular wherein the retaining webs (36) are oriented in a radial direction and/or arranged in a circle at regular distances from one another.
4. Aerator (1) according to one of the preceding claims, characterized in that the insert part (5) has a v-shaped or convex contour on its outflow side at least in an axial section.
5. Aerator (1) according to one of the preceding claims, characterized in that one or both of the two flow ducts (4) is/are configured as a nozzle (8) with a cross-sectional surface area which reduces in the main direction of flow (9), or as a diffusor with a cross-sectional surface area which widens in the main direction of flow (9).
6. Aerator (1) according to one of the preceding claims, characterized in that a stream-aerating device (10) for mixing the liquid portions with air is arranged downstream of the stream-splitting device (3) in the main direction of flow (9).
7. Aerator (1) according to one of the preceding claims, characterized in that the insert part (5) is inserted into an encircling groove (11) and/or groove (11) formed on the inflow side in the base body (28).
8. Aerator (1) according to one of the preceding claims, characterized in that the insert part (5) has an annular design or is designed as a plug and/or has a shape that tapers in the main direction of flow (9) .
9. Aerator (1) according to one of the preceding claims, characterized in that the outlet angles (12) of the two flow ducts (4) are defined by at least one wall (13), forming the hole (6), of the base body (28) and an outer contour (14) of the insert part (5).
10. Aerator (1) according to one of the preceding claims, characterized in that the hole (6) is oriented perpendicularly to the insert part (5) in the base body (28), in particular perpendicularly to a circumferential direction of the insert part (5) .
11. Aerator (1) according to one of the preceding claims, characterized in that the aerator (1) has a deflector body (18) which is arranged downstream of the stream-splitting device (3), wherein liquid that during use flows through the at least two flow ducts (4) impacts the deflector body (18).
12. Aerator (1) according to Claim 6, characterized in that the aerator (1) has a perforated restrictor (20) which is arranged within a chamber (19) of the stream-splitting device (10) and divides the chamber (19) into an air inlet part (21) and a mixing part (22), wherein the mixing part (22) and the air inlet part (21) are connected to each other via a restrictor orifice (30) of the perforated restrictor (20) .
13. Aerator (1) according to one of the preceding claims, characterized in that an inflow orifice (32) and an outflow orifice (33) of at least one flow duct (4) do not overlap each other along a longitudinal axis (34).
14. Aerator (1) according to one of the preceding claims, characterized in that at least one flow duct (4) or all flow ducts (4) is/are stepless.
15. Aerator (1) according to one of the preceding claims, characterized in that the base body (28) has an assembly cone (37) and the insert part (5) has a recess (38) provided for the introduction of the assembly cone (37), the inner wall (39) of said recess being adapted to the shape of the assembly cone (37).
16. Method for producing an aerator (1) according to one of the preceding claims, wherein the base body (28) has at least two flow ducts (4) which are oriented obliquely, wherein the two outlet directions (12) of the at least two flow ducts (4) meet each other, characterized in that the base body (28) is produced in an injection-moulding method, and in that an insert part (5) is inserted into a hole (6) of the base body (28) such that the hole (6) is divided by the insert part (5) into the at least two flow ducts (4) .

Images