CN113544348B

CN113544348B - Jet regulator

Info

Publication number: CN113544348B
Application number: CN202080019553.5A
Authority: CN
Inventors: H·舒尔勒; W·魏斯
Original assignee: Neoperl GmbH
Current assignee: Neoperl GmbH
Priority date: 2019-03-08
Filing date: 2020-02-03
Publication date: 2023-03-24
Anticipated expiration: 2040-02-03
Also published as: DE202019101312U1; WO2020182369A1; EP3935229B1; EP3935229A1; US20220170249A1; CN113544348A

Abstract

The invention relates to a jet regulator (1) comprising: at least one jet splitter (2) which splits the inflowing water flow, a sleeve-shaped inner housing (3) which is sheathed by an outer housing (4), and at least one aeration channel (5) which is arranged between the inner housing (3) and the outer housing (4) and has at least one inlet opening (6) and at least one passage opening (7) which is arranged on the housing circumference of the inner housing (3). The jet regulator (1) according to the invention is characterized in that the at least one jet splitter (2) is designed as an atomizing nozzle which divides the inflowing water flow into substantially hollow-cone-shaped water jets and in that an annularly encircling impact region (19) is arranged in the flow direction on the inner circumference of the inner housing (3) below the at least one through opening (7), said hollow-cone-shaped water jets impacting on the housing inner circumference of the inner housing (3) in said impact region.

Description

Jet regulator

Technical Field

The invention relates to a jet regulator having at least one jet splitter which splits the inflowing water flow, a sleeve-shaped inner housing which is sheathed by an outer housing, and at least one aeration channel which is arranged between the inner housing and the outer housing and has at least one inlet opening and at least one passage opening which is arranged on the housing circumference of the inner housing.

Background

From WO 2012/055 051A1 a device for spraying a liquid under pressure is known, which can be used as a nozzle for a sanitary outlet fitting or as a shower head. This known device has a central feed channel for the liquid, which extends along the device axis. A plurality of swirl chambers are arranged at a distance around the device axis, each having an inlet for feeding liquid into the respective swirl chamber and a discharge nozzle for discharging a liquid jet from the swirl chamber. The swirl chamber is connected to the inlet channel via an inlet channel which is arranged substantially transversely to the device axis. Each discharge nozzle is arranged at an angle to the longitudinal axis of the device such that the liquid jets discharged from the discharge nozzles meet each other at a predetermined distance from the discharge nozzles. However, the jet pattern of the water jet exiting from the known device also needs to be improved.

An atomizing nozzle is thus also achieved, which can also be mounted on the water outlet of the sanitary outlet fitting in order to atomize the water flowing in under pressure and thus form a uniform water jet (see DE 20 2013 002 283 U1). The known atomizing nozzles described above have a swirl chamber into which at least one feed channel, which is oriented transversely to the longitudinal axis of the nozzle and which enters tangentially into the swirl chamber in such a way that the water flowing into the swirl chamber experiences a swirl about the longitudinal axis of the swirl chamber. The swirl chamber tapers in the outflow direction in the direction of the nozzle channel, so that a water jet which is introduced into the swirl chamber during rotation about the longitudinal axis of the swirl chamber collects in a smaller and smaller circular path and is guided through the nozzle channel until it exits into the atmosphere at the channel end region of the nozzle channel, where a fluid sheet is formed which breaks up into such fine individual droplets at the free peripheral region of the channel end region, so that a uniform water jet is produced which is formed from fine water droplets.

However, with the aid of the jet regulator known and designed as an atomizing nozzle, the water flowing out of the water outlet cannot be easily mixed with the ambient air in such a way that a uniform, soft and well-mixed water jet is formed even at low throughflow powers.

DE 10 2006 013 881 A1 discloses an economical shower head which forms a water/air mixture by means of a water vortex in combination with ambient air drawn in by the vortex. For this purpose, economical shower heads are known which have a housing with a centrally arranged air inlet which surrounds a concentric, conical or hyperbolic drainage baffle with holes. This known economical shower head is connected to the water conduit under pressure by means of an inlet pipe. A control baffle is arranged in the inlet pipe, and the control baffle enables the inflowing water to be shaped into an inverted hyperbolic water vortex. This water vortex creates a negative pressure in the housing of the known economical shower head which causes ambient air to be drawn into the housing through the central air inlet. The air is input to the water flowing through the housing through the drain baffle. Water mixed with ambient air leaves the known economical shower head through holes in the drain baffle in the form of a short linear water structure filled with air gaps. Due to this special shaping of the outgoing water/air mixture, a sensation of uninterrupted water jet flow is created for the user. However, in the known economical shower heads, a uniform and soft bead-like discharge jet cannot be formed.

Disclosure of Invention

The object of the present invention is therefore to provide a jet regulator of the type mentioned at the outset which, even with as low a throughflow power as possible, has the following features: the inflowing water is well broken down and the broken-down water is optimally mixed with the ambient air, so that a uniform, beaded, soft and well-mixed discharge jet is formed in the jet regulator.

The solution according to the invention of this object is distinguished in particular by the following features in a jet regulator of the type mentioned at the outset:

the jet regulator comprises: at least one jet splitter which splits an inflowing water flow, a sleeve-shaped inner housing which is sheathed by an outer housing, and at least one aeration channel which is arranged between the inner housing and the outer housing and has at least one inlet opening and at least one passage opening which is arranged on the housing circumference of the inner housing, wherein the at least one jet splitter is designed as an atomizing nozzle which splits an inflowing water flow into a hollow-cone water jet, and an annularly encircling impact region is arranged in the flow direction on the inner circumference of the inner housing below the at least one passage opening, in which impact region the hollow-cone water jet impinges on the housing circumference of the inner housing.

The jet regulator according to the invention has at least one jet splitter which can be mounted on the water outlet of the sanitary outlet fitting, which splits and splits the inflowing water jet into small water particles or water jets. For this purpose, the jet regulator according to the invention has a sleeve-shaped inner housing which is sheathed by an outer housing. In this case, at least one aeration channel is arranged between the inner housing and the outer housing, which forms a line section for guiding water, through which ambient air can be drawn that is determined for mixing with the water flowing through the inner housing. The at least one aeration channel has an inlet opening and at least one through opening, which is arranged on the housing circumference of the inner housing and through which ambient air from the aeration channel can flow into the housing interior of the inner housing. The at least one jet splitter of the jet regulator according to the invention is designed as a jet atomizing nozzle which atomizes the inflowing water stream into a spray consisting of fine droplets (mist) and generates an aerosol consisting of fine droplets mixed with the ambient air, which aerosol forms a hollow-cone-shaped jet consisting of the separated liquid fractions in the inner housing. The atomizing nozzle used as a jet splitter is distinguished here by good jet separation and jet splitting even with relatively low throughflow power. An annular impact region is arranged on the inner circumference of the inner housing below the at least one through opening in the flow direction, in which impact region hollow conically divided water jets impinge on the housing inner circumference of the inner housing. The housing interior of the inner housing serves here as a mixing chamber in which the hollow conically divided water jet is additionally mixed with ambient air from the at least one through-opening, after which the air-mixed water jet is reformed in the flow direction after the impact zone into a soft discharge jet in the form of a bead having a uniform cylindrical jet periphery. The water droplets which also emerge from the atomizing nozzle as a fine mist (which may be laden with bacteria and which, on inhalation, may involve health risks) form a uniform and, for this reason, harmless jet in the direction of flow in the inner housing below the impact region.

In order to be able to feed ambient air uniformly into the mixing chamber provided in the housing interior of the inner housing, it is advantageous if the aeration channel is configured as an annular gap arranged between the inner housing and the outer housing.

In a preferred development of the invention, it is provided that at least one cross-sectional constriction is formed in the at least one gas filling channel. The at least one aeration channel formed in the area between the inner and outer housing reduces the transmission of disturbing noise caused by the water flowing through. An acoustic barrier is formed by the at least one cross-sectional constriction provided in the at least one aeration channel, which acoustic barrier additionally reduces the transmission of the disturbing noise to the outside.

In this case, a simple and preferred embodiment of the invention provides that the at least one cross-sectional constriction is designed as an annular collar which projects over the inner circumference of the outer housing.

Advantageously, the at least one cross-sectional constriction is arranged below the at least one through opening in the flow direction of the water jet flowing through the jet regulator.

In order to additionally promote a good mixing of the water flowing past with the ambient air, it is advantageous if at least one flow obstacle is provided in the inner housing. For this purpose, a preferred embodiment according to the invention provides that the inner housing tapers or narrows, preferably stepwise, towards its discharge end side. The at least one step provided on the housing inner circumference of the inner housing may surround the housing inner circumference or may also be segmented or interrupted. As a flow barrier which facilitates the mixing of water and ambient air, other projections are also conceivable which project from the housing inner circumference of the inner housing into the housing interior thereof.

In order to facilitate the formation of a uniform outlet jet, it is advantageous if a flow straightener is provided on the outlet end side of the inner housing, which flow straightener has a lattice structure, a mesh structure or a honeycomb structure with flow-through openings for guiding the fluid. The flow straightener arranged on the discharge end of the inner housing forms a uniform discharge jet from the swirled water which is mixed with the ambient air inside the housing of the inner housing.

In order to facilitate the straightening of the discharged water in the straightening device, it is advantageous if at least the plurality of through-openings has a greater longitudinal extent in the flow direction than the maximum width of the through-openings.

In order to prevent the flow straightener from being lifted into the housing interior of the inner housing, which serves as the mixing chamber, and in order to suppress the operation of hindering functions on the flow straightener, it is advantageous to integrate the flow straightener on the inner circumferential side of the inner housing.

Good jet formation of the discharged water is facilitated if at least one perforated plate is arranged upstream of the rectifier in the flow direction.

In this case, preferred is an embodiment in which the at least one perforated plate has holes whose maximum width is smaller than the width of the throughflow holes of the rectifier.

A simple and expedient embodiment of the invention provides that the at least one perforated plate is inserted into the housing interior of the inner housing and preferably rests on the commutator.

In order to be able to mount the jet regulator according to the invention on the water outlet of the sanitary outlet fitting, it is advantageous if the outer housing has a coupling part on its inflow-side housing circumference, which coupling part interacts with a mating coupling part on the water outlet of the sanitary outlet fitting. A particularly simple and advantageous embodiment according to the invention may be that the coupling provided on the outer housing is designed as a thread which interacts with a mating thread on the water outlet of the sanitary outlet fitting.

The design and production of the jet regulator according to the invention are significantly simplified if the inner housing has at least one insertion stop on the outer circumference side and the inner housing can be inserted into the outer housing until the insertion stop rests on a bearing provided on the housing inner circumference of the outer housing.

A preferred embodiment according to the invention provides that the insertion stop is designed as a segmented or circumferential annular shoulder.

When the end face of the input side of the annular flange, which serves as a cross-sectional constriction, serves as a support for the at least one insertion stop, a precise arrangement of the unit formed by the jet splitter and the inner housing in the outer housing of the jet regulator according to the invention is facilitated.

In order to additionally prevent the output of such disturbing noises, which are generated in the jet regulator according to the invention by the water flowing through, it is advantageous if the inlet opening of the at least one aeration channel is arranged on the output side of the jet regulator. For this purpose, a preferred embodiment according to the invention also provides that the output-side end edge region of the outer housing is bent in the direction of the inner housing and/or that the output-side end edge region of the inner housing is bent in the direction of the outer housing. The inlet opening thus has a reduced cross section compared to the clear channel cross section of the aeration channel in the channel section following in the flow direction, as a result of which the discharge of the reflected interference noise in the aeration channel is additionally made more difficult and additionally also facilitates the low-noise operation of the jet regulator according to the invention.

A preferred development of the invention provides that the jet regulator has a single, preferably central jet splitter, and that the longitudinal axes of the jet splitter, the inner housing and the outer housing are arranged coaxially to one another.

The installation of the jet regulator according to the invention is significantly simplified and the joining of the individual components forming the jet regulator according to the invention during storage and transport is facilitated if the jet splitter is connectable to the inner housing, preferably detachably latched, on the end face of the inlet side of the inner housing.

A preferred development of the invention provides that the jet splitter, which is in the form of an atomizing nozzle, has a swirl chamber into which opens at least one supply channel, which is oriented transversely to the longitudinal axis of the nozzle and preferably enters tangentially; at least one inlet channel is connected upstream of each inlet channel in the flow direction, and the swirl chamber tapers in the outflow direction toward the nozzle channel, on the channel end region of which the water jet is output into the inner housing.

Drawings

The following description of an exemplary embodiment of the invention refers to the accompanying drawings. The invention will be described in more detail below with the aid of preferred embodiments.

Showing:

fig. 1 is a unit of a jet regulator, which is not further shown here, formed by an inner housing and a jet splitter,

figure 2 shows the unit of figure 1 formed by the jet splitter and the inner housing detachably latched to the jet splitter in a longitudinal section bent along the longitudinal center axis,

figure 3 shows the unit of figures 1 and 2 formed by the jet splitter and the inner housing in a longitudinal section which is also bent along the longitudinal mid-axis,

figure 4 shows a detailed longitudinal section through the unit shown in figures 1 to 3 in the region of the discharge end side of the inner housing,

fig. 5 shows the jet regulator formed using the unit shown in fig. 1 to 4, wherein the unit consisting of the jet splitter and the inner housing is surrounded here by an outer housing which can be mounted on the water outlet of the sanitary outlet fitting and the jet regulator is illustrated here in a longitudinal section in the plane of the drawing, and

fig. 6 shows the unit according to fig. 1 to 4, which is shown in an exploded perspective view of its component parts and is formed by a jet splitter and an inner housing connected downstream in the flow direction, which unit is used in the jet regulator according to fig. 5.

Detailed Description

Fig. 1 to 6 show the jet regulator 1 (see fig. 5) and its main components in different views. The jet regulator 1 should have the following features even with as low a throughflow power as possible: the inflowing water is well broken down and the broken-down water is optimally mixed with the ambient air, so that a uniform, soft and well-mixed discharge jet is formed in the jet regulator 1 in the form of a bead. For this purpose, the jet regulator 1 shown here can be mounted on the water outlet of a sanitary outlet fitting, not shown here further. For this purpose, the jet regulator 1 has a jet splitter 2, which splits the inflowing water flow and splits it into small water particles or water jets. The jet regulator 1 has a sleeve-shaped inner housing 3 which is sheathed by an outer housing 4. Between the inner housing 3 and the outer housing 4, at least one aeration channel 5 is arranged, which forms a line section for guiding water, through which ambient air can be sucked in, said ambient air being intended to be mixed with the water flowing through the inner housing 3.

The at least one aeration channel 5 has at least one inlet opening 6 and at least one through opening 7, which is arranged on the housing circumference of the inner housing 3 and through which ambient air from the aeration channel 5 can flow into the housing interior of the inner housing 3, which serves as a mixing chamber.

The at least one jet splitter 2 of the jet regulator 1 is designed as an atomizing nozzle which splits the inflowing water flow into substantially hollow-cone water jets and which is distinguished by good jet splitting and jet breakup even at relatively low throughflow powers. The atomizing nozzle used as jet splitter 2 has a nozzle body 8 which can be connected to the inner housing 3 at the end edge of its inlet side and is preferably latched. In the nozzle body 8, a swirl chamber 9 is provided which has a chamber portion 10 of substantially cylindrical or disk-shaped cross section on the inflow side. At least one inlet channel 11, which is oriented transversely and preferably perpendicularly to the longitudinal axis of the nozzle and enters tangentially into the swirl chamber 2, opens into the swirl chamber 9. For this purpose, a plurality of supply channels 11, each formed by a recess 29, open into the swirl chamber 9, which supply channels are spaced uniformly apart from one another in the circumferential direction. The swirl chamber 9 tapers in the outflow direction in the direction of the nozzle channel 12 in a funnel-shaped manner. The funnel-shaped section of the swirl chamber 9 is designed in its clear cross section such that the swirl chamber 9 has a conical or hyperbolic funnel shape in the direction of the nozzle channel 5. The atomizing nozzle used as jet splitter 2 has an inflow-side insertion opening 13 in its nozzle body 8. At least one recess 14 which is intended to form an inlet channel 30 is provided on the circumferential wall of the insertion opening 13. In this case, each supply channel 11 is located in front of an inlet channel 30 oriented in the longitudinal direction of the nozzle in the flow direction. The plug 15 can be inserted into the insertion opening 13 as far as a circumferentially encircling annular shoulder 16. The annular shoulder 16 is interrupted by at least one groove 29 which is provided for forming the supply channel 11. The periphery of the plug 15 closes the at least one recess 14 to form the inlet channel 30, while the end side of the plug 14 closes the at least one recess 29 on the longitudinal side to form the inlet channel 11. On the end side of the plug 15 facing the swirl chamber 9, the plug has a recess 17. As can be seen in fig. 1 to 3, 5 and 6, the nozzle body 8 can be connected and preferably latched to the upstream screen or filter screen 18 on its entry side ZS. The upstream screen 18 filters dirt particles and scale residues which are carried along in the incoming water flow and which otherwise could impair the function of the jet regulator 1.

The atomizing nozzle used as jet splitter 2 splits the incoming water flow, wherein the water flow is atomized into a spray consisting of fine droplets (mist) and an aerosol consisting of fine droplets mixed with the ambient air is formed. The spray formed by the fine droplets emerges from the atomizing nozzle as a hollow conical jet formed by the separated liquid fractions. Such a hollow cone shaped water jet is shown in fig. 2 by the dashed line 31. In the flow direction, an annular impact region 19 is arranged below the at least one through opening 7 of the aeration channel 5, in which the hollow conically divided water jets impact on the housing periphery of the inner housing 3. The housing interior of the inner housing 3 serves here as a mixing chamber in which the hollow conically divided water jet is mixed with the ambient air from the at least one through-opening 7, after which the air-mixed water jet is again shaped in the flow direction after the impact zone 19 into a beaded, soft discharge jet with a uniform cylindrical jet periphery. In this case, the water droplets which also emerge from the atomizing nozzle as a fine mist (which may be laden with bacteria and which, on inhalation, may involve health risks) form a uniform and, for this reason, harmless discharge jet in the direction of flow in the inner housing 3 below the impact region 19.

In order to achieve a homogeneous mixing in the housing interior of the inner housing 3, which serves as a mixing chamber, the aeration channel 5 is configured as an annular gap arranged between the inner housing 3 and the outer housing 4. The annular gap can surround the inner housing 3 and/or can also be segmented at least in partial regions of the longitudinal extent of the channel. In order to additionally also facilitate the desired homogeneous mixing, at least two and preferably a plurality of passages 7 spaced apart from one another at a particularly uniform distance are provided on the housing circumference of the inner housing 3.

The at least one aeration channel 5 formed in the region between the inner housing 3 and the outer housing 4 already reduces the transmission of disturbing noise in the jet regulator 1 caused by the water flowing past. In order to reduce the disturbing noise even more additionally and to reduce the perception of the disturbing noise even more additionally in the environment of the jet regulator 1, at least one cross-sectional constriction 20 is formed in the at least one aeration channel 5. The at least one cross-sectional constriction 20 provided in the at least one aeration channel 5 forms an acoustic barrier which additionally reduces the transmission of this disturbing noise to the outside. The cross-sectional constriction 20 is configured here as an annular collar projecting on the inner circumference of the outer housing 4. Here, the cross-sectional constriction 20 is arranged in the flow direction of the water jet flowing through the jet regulator 1 below the at least one through opening 7 and thus upstream of the through opening 7 in the inflow direction of the ambient air in the aeration channel 5. In order to additionally reduce the perception of such disturbing noise in the environment of the jet regulator 1, the inlet opening 6 of the at least one aeration channel 5 is arranged on the outlet side of the jet regulator 1. As can be seen particularly well in fig. 5, for this purpose the end edge region of the output side of the outer housing 4 is also bent in the direction of the inner housing 3. The inlet opening 6 therefore has a reduced cross section compared to the clear channel cross section of the aeration channel 5 in the channel section following in the flow direction of the ambient air guided in the aeration channel 5, so that the discharge of the disturbing noise reflected in the aeration channel 5 is made more difficult and additionally the low-noise operation of the jet regulator 1 according to the invention is also facilitated.

In order to facilitate a good mixing of the ambient air sucked into the housing inner cavity of the inner housing 3 (on the one hand) and the water flowing through the inner housing (on the other hand), it is advantageous if a flow obstacle is provided in the housing inner cavity of the inner housing 3. As can be seen in fig. 2 to 5, the inner housing 3 is also stepped tapering towards its discharge end side. Here, the step provided on the housing inner circumference of the inner housing 3 can, as here, also be looped around the housing inner circumference or be segmented or interrupted. Here, good mixing of air and water is already facilitated when at least one such step 21 is provided on the housing inner circumference of the inner housing 3.

A baffle 32, which is indicated in fig. 5 by a dashed line, can be arranged in the housing interior of the inner housing 3, below the passage opening 7 at a preferably small distance in the flow direction oriented from the inlet side ZS toward the outlet side AS. The baffle 32 has a central opening which limits the clear cross section of the inner shell 3 in this region to the open cross section of the baffle 32. The baffle 32 is preferably designed as an orifice disk which is inserted into the inner housing 3. The baffle 32 divides the housing interior of the inner housing 3 into an air inlet chamber in the region of the through openings 7 and a mixing chamber arranged below the baffle 32. The openings of the baffle 32 enclose the water jets coming from the atomizing nozzles and there in the form of a hollow cone preferably spaced apart. The baffle 32 prevents aerosol or impinging water, which may be generated by water impinging on the inner housing, from flowing out through the through openings 7.

A flow straightener 22 is provided on the outlet end side of the inner housing 3, said flow straightener homogenizing the water flowing in through the inner housing 3 and mixed with the ambient air in the outlet direction. The flow straightener 22 has a lattice structure, a honeycomb structure or, as described herein, a mesh structure with flow-directing through-openings 23. At least the flow openings 23 have a greater longitudinal extent in the flow direction than the maximum width of the flow openings 23. In order to suppress undesired manipulation on the commutator 22 of the jet regulator 1, the commutator 22 is integrally formed on the inner peripheral side of the inner housing 3. The throughflow holes 23 are arranged and designed in such a way that the water jets recombine downstream into a uniform discharge jet. Upstream of the flow straightener 22, in the flow direction, at least one perforated plate 24 is provided, which has holes 25, the maximum width of which is smaller than the width of the throughflow holes 23 of the flow straightener 22. The perforated plate 24 here has a grid structure surrounding the holes 25.

The at least one perforated plate 24 is inserted into the housing interior of the inner housing 3 and preferably rests on the commutator 22.

In order to be able to mount the outer housing of the jet regulator 1 shown in fig. 5 at the water outlet of the sanitary outlet fitting, the outer housing 4 has a coupling part, which is designed here as a thread 28, on its housing circumference on the inflow side and interacts with a mating coupling part, which is designed for example by a mating thread, at the water outlet of the sanitary outlet fitting.

The inner housing 3 has at least one insertion stop 26, wherein the inner housing 3 can be inserted into the outer housing 4 until the at least one insertion stop 26 rests on a support provided on the housing inner circumference of the outer housing 4. Here, the input-side end face of the annular flange 20, which serves as a cross-sectional constriction, serves as an abutment. The insertion stop 26 is designed here as a segmented annular shoulder on the outer circumference of the inner housing 3.

The jet regulator 1 has a single and preferably central jet splitter 2. The longitudinal axes of the jet splitter 2, the inner housing 3 and the outer housing 4 are arranged coaxially to one another. The jet splitter 2 can be detachably connected to the inner housing 3 at the end face of the input side thereof and can preferably be detachably latched.

The jet aerator 1 shown here is also distinguished by a reliable mode of operation at very low throughflow levels and throughflow powers. Here, a central atomizing nozzle is used as jet splitter 2. In the atomizing nozzle, a hollow-cone-shaped water jet is formed which flows into a housing interior of the inner housing 3, which serves as a mixing chamber, and impinges on the inner housing 3 on the inner circumferential side in an impingement zone 19. The hollow-cone-shaped water jet emerging from the jet splitter 2 shows little rotational movement. The length of the inner housing 3 in the housing section arranged below the through-opening 7 is determined to be sufficiently long so that water which accumulates in the region of the rectifier 22 on the discharge end of the inner housing 3 cannot flow back into the region of the impact region 19. The shoulder at the outflow-side end of the inner housing 3 can additionally improve the mixing of the water with the ambient air.

List of reference numerals

1 jet regulator

2 jet splitter

3 inner shell

4 outer casing

5 air-filling channel

6 inlet

7 through hole

8 nozzle body

9 vortex chamber

10 chamber segment

11 input channel

12 nozzle channel

13 insertion opening

14 groove

15 plug

16 annular shoulder

17 recess

18 pre-screen or filter screen

19 impact zone

20 cross-sectional constriction

21 annular shoulder

22 rectifier

23 flow hole

24-hole plate

25 holes

26 insertion stop

27 bevel face

28 screw thread

29 groove

30 entry channel

31 line

32 baffle

AS output side

ZS entry side

Claims

1. A jet regulator (1) having: at least one jet splitter (2) which splits an inflowing water flow, a sleeve-shaped inner housing (3) which is sheathed by an outer housing (4), and at least one aeration channel (5) which is arranged between the inner housing (3) and the outer housing (4) and which has at least one inlet opening (6) and at least one passage opening (7) which is arranged on the housing circumference of the inner housing (3), wherein the at least one jet splitter (2) is designed as an atomizing nozzle which splits an inflowing water flow into a hollow-cone-shaped water jet and an annularly encircling impact region (19) is arranged in the flow direction on the inner circumference of the inner housing (3) below the at least one passage opening (7), wherein the hollow-cone-shaped split water jet impinges on the housing circumference of the inner housing (3) in the impact region.

2. A jet regulator according to claim 1, characterized in that the aeration channel (5) is configured as an annular gap arranged between the inner housing (3) and the outer housing (4).

3. Jet regulator according to claim 1, characterized in that at least one cross-sectional constriction (20) is configured in the at least one aeration channel (5).

4. Jet regulator according to claim 3, characterized in that the at least one cross-sectional constriction (20) is configured as an annular flange projecting on the inner circumference of the outer housing (4).

5. Jet regulator according to claim 3, characterized in that the at least one cross-sectional constriction (20) is arranged below the at least one through opening (7) in the flow direction of the water jet flowing through the jet regulator (1).

6. A jet regulator according to any of claims 1 to 3, characterized in that the inner housing (3) tapers or narrows towards its discharge side (AS).

7. A jet regulator according to any of claims 1 to 3, characterized in that the inner housing (3) tapers or narrows in a step.

8. Jet regulator according to one of claims 1 to 3, characterized in that a rectifier (22) is provided on the outlet side (AS) of the inner housing (3), which rectifier has a lattice structure, a mesh structure or a honeycomb structure with a plurality of throughflow holes (23) guiding the flow.

9. Jet regulator according to claim 8, characterized in that at least the plurality of through-flow holes (23) have a greater longitudinal extent in the flow direction than the maximum width of the through-flow holes (23).

10. Jet regulator according to claim 8, characterized in that the fairings (22) are integrally formed onto the inner peripheral side of the inner housing (3).

11. Jet regulator according to claim 8, characterized in that at least one orifice plate (24) is arranged upstream of the commutator (22) in the flow direction.

12. Jet regulator according to claim 11, characterized in that the at least one orifice plate (24) has an orifice (25) whose maximum width is smaller compared to the width of the throughflow orifice (23) of the commutator (22).

13. Jet regulator according to claim 11, characterized in that the at least one orifice plate (24) is inserted into the housing inner cavity of the inner housing (3).

14. Jet regulator according to claim 13, characterized in that the at least one orifice plate (24) rests on the commutator (22).

15. A jet regulator according to any one of claims 1 to 3, characterized in that the outer housing (4) has a thread (28) on its inflow-side housing circumference, which thread cooperates with a mating thread on the water outlet of the sanitary outlet fitting.

16. Jet regulator according to one of claims 1 to 3, characterized in that the inner housing (3) has at least one insertion stop (26) and the inner housing (3) can be inserted into the outer housing (4) until the insertion stop (26) rests on a seat provided on the housing inner circumference of the outer housing (4).

17. Jet regulator according to claim 16, characterized in that the insertion stop (26) is configured as a segmented or circumferential annular shoulder.

18. Jet regulator according to claim 16, characterized in that at least one cross-sectional constriction (20) is configured in the at least one aeration channel (5), the at least one cross-sectional constriction (20) being configured as an annular flange protruding on the inner circumference of the outer housing (4), and the end face of the input side of the annular flange serving as a cross-sectional constriction (20) serving as a seat for the at least one insertion stop (26).

19. A jet regulator according to any one of claims 1 to 3, characterized in that the inlet opening (6) of the at least one aeration channel (5) is arranged on the output side of the jet regulator (1).

20. Jet regulator according to claim 19, characterized in that the end edge region of the output side of the outer housing (4) is bent in the direction of the inner housing (3) and/or the end edge region of the output side of the inner housing (3) is bent in the direction of the outer housing (4).

21. Jet regulator according to any of claims 1 to 3, characterized in that the jet regulator (1) has one single jet splitter (2); and the longitudinal axes of the jet splitter (2), the inner housing (3) and the outer housing (4) are arranged coaxially to one another.

22. Jet regulator according to claim 21, characterized in that the jet regulator (1) has a central jet splitter (2).

23. Jet regulator according to one of claims 1 to 3, characterized in that the jet splitter (2) can be connected to the inner housing (3) on the end side of the input side thereof.

24. Jet regulator according to claim 23, characterized in that the jet splitter (2) can be latched with the inner housing.

25. The jet regulator according to one of claims 1 to 3, characterized in that the jet splitter (2) designed as an atomizing nozzle has a swirl chamber (9) into which at least one inlet channel (11) which is oriented transversely to the nozzle longitudinal axis and which opens into the swirl chamber (9) opens; connecting at least one inlet channel upstream of each inlet channel (11) in the flow direction; and the swirl chamber (9) tapers in the outflow direction toward a nozzle channel (12), the water jet being discharged into the inner housing (3) in the form of a hollow cone at the channel end region of the nozzle channel.

26. Jet regulator according to claim 25, characterized in that at least one inlet channel (11) which is oriented transversely to the longitudinal nozzle axis and which enters tangentially into the swirl chamber (9) opens into the swirl chamber.