CN113356310B

CN113356310B - Jet regulator

Info

Publication number: CN113356310B
Application number: CN202110717292.0A
Authority: CN
Inventors: A·施泰因; G·布卢姆
Original assignee: Neoperl GmbH
Current assignee: Neoperl GmbH
Priority date: 2017-09-06
Filing date: 2018-07-13
Publication date: 2023-07-25
Anticipated expiration: 2038-07-13
Also published as: WO2019048113A1; CN208586700U; EP3708723A1; PL3649300T3; ES2908051T3; EP3649300B1; MX2019014707A; BR112019027225B1; CN109457767B; DE202017105378U1; ES2880363T3; EP3649300A1; BR112019027225A2; CN111094670A; US20200224395A1; CN111094670B; PL3708723T3; CN113356310A; CN109457767A; EP3708723B1

Abstract

The invention relates to a jet regulator (104) having a jet regulator housing (1) which has an external thread (2) on its housing outer circumference for screwing into an internal thread (3) in a water outlet (4) of a sanitary outlet fitting. The jet regulator according to the invention is characterized in that the jet regulator housing (1) has, on its outer housing circumference, a thread contour as an external thread which deviates at least in some regions from a thread groove which surrounds the cylindrical wall in a continuously spiral-like manner, said external thread in this region being adapted to interact with an internal thread provided in the water outlet, and/or in that the jet regulator housing has at least one cross-sectional expansion (6, 7) which is of the same material as the housing section of the jet regulator housing with said external thread and is integrally formed thereon and can be brought into close contact with the water outlet on the end side and/or the inner circumference side.

Description

Jet regulator

The present application is a divisional application of the invention patent application with international application number PCT/EP2018/069074, national application number 201880055075.6, application date 2018, 7-13, named "jet regulator".

Technical Field

The invention relates to a jet regulator having a jet regulator housing with an external thread on its housing outer circumference for screwing into an internal thread in the water outlet of a sanitary outlet fitting.

Background

Jet regulators in various embodiments have been proposed to shape the water exiting the outlet of a sanitary outlet fitting into a uniform and splash-free jet of water. For this purpose, a previously known jet regulator is mounted on the sanitary outlet fitting in the outlet region.

A jet regulator of the type mentioned initially is known from EP 3 153 A1, which has an external thread on the outer circumference of its jet regulator housing, by means of which the jet regulator housing can be screwed into an internal thread in the water outlet of a sanitary outlet fitting. In order to seal the previously known jet regulator in the region of the annular gap between the jet regulator housing and the inner circumference of the water outlet without the aid of at least one separate sealing ring made of elastic material, external threads are provided in the previously known jet regulator directly below at least one air filling opening penetrating the circumferential wall of the jet regulator housing, through which, in addition to ambient air, also water leakage can be sucked into the housing interior, which water leakage can pass through the annular gap via a screw connection between the internal thread and the external thread. As soon as the water flows through the previously known jet regulator, and thus a negative pressure is generated at least one of its air supply openings, the previously known jet regulator is able to bring a portion of the leakage water passing through the screw connection into the interior of the housing. However, since the filling opening extends at most only over part of the circumference of the jet regulator housing, there is the following risk: the remaining leakage water can pass through the annular gap between the outer housing circumference of the jet regulator housing and the inner circumference in the water outlet of the sanitary outlet fitting and can flow out in a disturbing manner at the front end of the outflow side of the water outlet.

Disclosure of Invention

The object, therefore, is in particular to provide a jet regulator of the type mentioned at the outset which is distinguished by a significantly improved seal in the region between the outer circumference of the jet regulator housing and the inner circumference in the water outlet of the sanitary outlet fitting.

In the case of a jet regulator of the type mentioned at the outset, the solution according to the invention for this purpose is, in particular, that the jet regulator housing has, on its housing outer circumference, a thread contour which deviates at least in some regions from a thread groove which surrounds the cylindrical wall in a continuous spiral, and in which the external thread interacts with an internal thread provided in the water outlet, and/or that the jet regulator housing has at least one cross-sectional expansion which is of the same material as the housing section of the jet regulator housing with the external thread and is integrally formed on this housing section, and which can be brought into close contact with the water outlet on the end side and/or the inner circumference.

The jet regulator according to the invention has a jet regulator housing having an external thread on its outer circumference. By means of an external thread provided on the outer circumference of the housing, the jet regulator according to the invention can be screwed into an internal thread in the water outlet of the sanitary outlet fitting in order to shape the water flowing there into a uniform, splash-free and optionally beaded soft water jet. In order to seal the annular region remaining between the outer housing circumference and the inner water outlet circumference of the jet regulator housing in order to prevent uncontrolled outflow of leakage water, it is proposed according to the invention that the jet regulator housing has a thread profile as an external thread which deviates at least in some regions from a thread groove which surrounds the cylindrical wall in a continuous spiral. In this at least partially offset thread profile, the external thread interacts in an adaptive manner with the internal thread provided in the water outlet, so that the screw connection in this region is particularly well sealed. In addition or alternatively thereto, it is proposed according to a further proposal of the invention that the jet regulator housing has at least one cross-sectional expansion which is of the same material as the externally threaded housing section of the jet regulator housing and is integrally formed on the housing section and which can be brought into close contact with the water outlet on the end face and/or on the inner circumferential side. Thanks to this particular design feature of the jet regulator housing, even if the jet regulator according to the invention is constructed without an additional elastic sealing ring for axial or radial sealing of the jet regulator housing, uncontrolled outflow of leakage water is effectively avoided by the annular region arranged between the outer circumference of the jet regulator housing and the inner circumference of the water outlet under almost all operating conditions. With the jet regulator according to the invention, the above-mentioned annular region can be reliably sealed even if the internal thread in the water outlet cannot be produced with high precision, and even if an annular projection in the water outlet which is required for axial sealing is omitted for low production effort in the production of the water fitting.

The jet regulator according to the invention is relatively insensitive to calcification, due to its special design features, even in the region of its jet regulator housing. According to a preferred embodiment of the invention, the jet regulator is therefore designed as a jet aerator which mixes the water flowing through it with ambient air and which has at least one aeration opening for this purpose in a housing section of the jet regulator housing which is arranged on the outflow side of the external thread and which is arranged on the housing circumference or on the housing end side of the jet regulator housing.

In order for the jet regulator to be able to shape the water flowing through its jet regulator housing well, a jet shaping structure is required in the housing interior. In order to be able to insert the jet forming structure in a simple manner into the jet regulator housing, it is advantageous if the jet regulator housing has at least two housing parts that can be connected to one another and the first housing part arranged on the outflow side is provided with an external thread. At least two adjacent housing parts of the jet regulator housing can then be connected to one another in a non-releasable, but preferably releasable manner.

The water flowing through the jet regulator housing can be particularly effectively shaped if the first housing part on the outflow side can be connected, preferably releasably, on the inflow side to the second housing part of the jet regulator housing, wherein the second housing part has a jet splitter which splits the flowing water into a plurality of individual jets.

In this case, according to a preferred embodiment of the invention, it is proposed that the jet splitter is designed as a diffuser with a basin-shaped jet splitter insert, which has a plurality of splitter openings on its basin circumference and a basin bottom, which is designed as a deflector surface for deflecting the oncoming water toward the splitter openings.

In order to first split the water flowing out into the jet regulator housing into individual jets and to subsequently accelerate the individual jets in such a way that a negative pressure is generated on the outflow side of the diffuser, it is advantageous if the second housing part surrounds the jet splitter insert and tapers conically at least in the region of the cylinder opening in such a way that an annular gap is formed between the jet splitter insert and the housing inner circumference of the second housing part, which tapers on the outflow side towards the annular opening into the housing interior.

According to a preferred development of the invention, a sleeve-shaped guide wall is provided in the jet regulator housing, and at least one air supply channel is provided between the housing inner circumference of the jet regulator housing and the guide wall, said air supply channel leading from at least one air supply opening provided on the housing outflow side into the housing interior. In this modified embodiment, the jet regulator according to the invention has an outer surface formed by the outer circumference of the housing and an inner surface formed by the guide wall. Since the at least one filling channel and the at least one filling opening can thus be arranged on the inner surface of the jet regulator, which is configured as a jet aerator, accelerated calcification in the annular region between the outer housing circumference of the jet regulator housing and the inner circumference in the water outlet is effectively counteracted.

According to a further development of the invention, it is proposed that the housing front edge region of the jet regulator housing, which is arranged on the outflow side of the external thread, is curved in the direction of the inner circumference of the water outlet opening in such a way that a drainage annular space is formed between the housing front edge region and the inner circumference of the water outlet opening. The leakage water which reaches the front circumferential region of the outflow side of the jet regulator housing via the screw connection through the annular region between the housing outer circumference and the inner circumference of the water outlet opening is accumulated there in a drainage annular space which is formed between the housing front edge region of the outflow side and the inner circumference of the water outlet opening.

In this case, according to a particularly advantageous embodiment of the invention, it is provided that the outlet-side housing front edge of the jet regulator housing is formed as a lip seal which rests on or close to the inner circumference of the water outlet. The front edge of the housing, which is on the outflow side and is formed as a lip seal, can be brought into close contact with the inner circumference of the water outlet. However, it is also possible that the housing front edge is only adjacent to the inner circumference of the water outlet opening, so that the leakage water accumulating in the drainage annular space remains there due to capillary forces, or that the annular gap left between one side of the lip seal and the other side of the inner circumference of the water outlet opening is tightly closed by calcification which may be desirable in this region, because of no impairment in function.

In order to continuously empty the water discharge annular space during operation of the jet regulator according to the invention, it is advantageous if at least one water discharge opening is provided in a partial region of the housing wall of the jet regulator housing, which is arranged between the housing front edge on the outflow side and the external thread, said water discharge opening leading from the water discharge annular space to the air filling channel or to at least one of the air filling channels. Thus, ambient air drawn into the housing interior of the jet aerator through the air entrainment channel entrains leakage water out of the drain opening, which is mixed in the housing interior with the water flow through the jet regulator housing.

If the lattice or mesh structure formed by webs that cross each other at the crossover point is integrally molded onto the guide wall on the outflow side, a functional operation of the jet regulator according to the invention can also be ensured against unauthorized manipulation. Thus, the grid structure or mesh structure on the outflow side of the flow rectifier (which combines water, in particular mixed with ambient air, to form a uniform outflow), and the structure located thereunder in the interior of the housing, are not pressed upwards against the flow direction of the water.

In order to be able to screw the jet regulator according to the invention into the water outlet of the sanitary outlet fitting in a simple manner, it is advantageous if the guide wall is connected in a rotationally fixed and in particular one-piece manner to the jet regulator housing and in particular to the first housing part on the outflow side, and at least one tool active surface for rotating the tool is provided on the guide wall and/or on the lattice structure or mesh structure.

In this case, an embodiment of the invention which can be produced particularly simply and is easy to handle provides that at least one slot-like recess is provided in the grid structure or the mesh structure for inserting coins or other rotary tools which serve as rotary tools, said recess being delimited by opposing slot longitudinal walls which form a tool contact surface for the rotary tool.

A structurally simple and well-sealed embodiment according to the invention, in which the external thread forms a thread profile which deviates at least partially from a thread groove which runs continuously helically around the cylindrical wall, proposes that the external envelope circle of the external thread on the jet regulator housing for screwing with the internal thread formed into the cylindrical water outlet preferably tapers toward the outflow side. In this embodiment, the thread section of the external thread which expands in its conical shape penetrates deeply into the circumferential thread groove of the internal thread provided in the water outlet, so that this annular region between the one external thread on the outer circumference of the housing and the other internal thread in the water outlet is effectively sealed against leakage of water.

It is expected that water leaks out through the screw connection between the internal thread and the external thread. In order to ensure that the pitch of the screw connection is free from leakage of water, it is expedient if at least one molding, which serves as a liquid barrier, is provided on the outer circumference of the housing of the jet regulator housing, which molding protrudes into at least one thread groove of the external thread.

In order to enable the profiled section serving as a liquid barrier to be deeply embedded in the thread groove of the internal thread provided at the water outlet, it is advantageous if the at least one profiled section extends to the envelope circle surrounding the external thread or at least partially protrudes beyond this envelope circle.

Particularly effective sealing is facilitated if the at least one molding is formed as a separating wall extending over at least two adjacent thread grooves of the external thread.

In this case, a comfortable, easy-to-manufacture and effective sealing embodiment of the invention is proposed (in which the dividing wall represents a deviation in the external thread formed by a thread groove which surrounds the cylindrical wall in a continuous spiral, the at least one dividing wall extending approximately axially parallel to the housing longitudinal axis of the jet regulator housing).

In addition or instead of this, however, the offset in the external thread according to the invention can also be configured as at least one cam-shaped formation, wherein the cam-shaped formation extends in the thread groove approximately in the longitudinal direction of the groove.

However, it is also possible for the thread profile of the external thread protruding from the thread groove to be expanded at least partially and preferably in the thread section on the outflow side, so that the external thread can be cut into the internal thread in a sealing manner with the expanded thread section on the outflow side.

In order to provide a cross-sectional expansion on the outer housing circumference of the jet regulator housing, an embodiment according to the invention proposes that the at least one cross-sectional expansion protrudes in a flange-like manner on the outer housing circumference of the jet regulator housing.

The at least one flange-like cross-sectional expansion can extend in the circumferential direction of the housing of the jet regulator housing over at least one drain opening.

In order to allow at most a small portion of the leakage water to leak into the drainage annular space, it is expedient if the at least one flange-like cross-sectional expansion is arranged on the outer circumference of the housing of the jet regulator housing between the external thread and the at least one drainage opening.

A particularly compact embodiment according to the invention provides that the flange-like cross-sectional expansion is formed as an annular flange which surrounds the jet regulator housing.

According to a preferred embodiment of the invention, the at least one flange-like cross-sectional extension is designed as a screw-in stop, which delimits a screw-in external thread into an internal thread in the water outlet of the water outlet fitting.

Since in the jet regulator according to the invention the annular region between the outer circumference of the jet regulator housing and the inner circumference of the water outlet is well sealed, it is proposed according to a preferred embodiment of the invention that the jet regulator is constructed without a sealing ring and that the sealing ring is not required to be made of an elastic material separately from the jet regulator housing.

In the embodiments already described above, the jet splitter is configured as a diffuser. In a specific application, an embodiment which is configured differently from this provides that the jet splitter is configured as an orifice plate with a splitter opening. In order to generate a corresponding negative pressure on the outflow side of the jet splitter formed as an orifice plate, the splitter opening advantageously tapers at least in sections in the flow direction.

In order to subsequently shape the single jet from the jet splitter and, if appropriate, mixed with ambient air, into a uniform jet (which flows out of the jet regulator without splashing), it is advantageous if at least one insert is connected downstream of the jet splitter at a distance in the flow direction, which insert has a grid structure or a network of webs intersecting one another at intersecting points.

According to an advantageous development of the invention, the lattice structure or mesh structure provided in the at least one insert and/or integrally molded to the guide wall has through-flow openings, which have a honeycomb-shaped and/or hexagonal net opening cross section.

In contrast, an embodiment of the present invention provides that the grid or mesh structure provided in the at least one insert and/or integrally formed on the guide wall is formed by at least two concentrically encircling webs, which are connected to a set of radial webs.

If a lattice or mesh structure with diamond-shaped or rectangular through-flow openings is to be formed in at least one insert and/or on the guide wall in the jet regulator housing, it is advantageous if the lattice or mesh structure formed in one piece in at least one insert and/or on the guide wall has a set of axially parallel first webs which intersect a set of axially parallel second webs which are arranged at an angle and preferably at right angles to the first webs.

According to a further proposal of the invention, it is proposed that the lattice or mesh structure formed in one piece in the insert and/or on the guide wall is formed by webs which cross one another and are arranged at an angle to one another, so that the lattice or mesh structure is patterned by flow openings which are differently formed over its clear opening cross section.

Drawings

The invention is described in detail below with reference to preferred embodiments:

the drawings show:

fig. 1 shows a jet regulator housing of the jet regulator, which is shown in a perspective view, with an external thread on its jet regulator housing, by means of which the jet regulator is screwed into an internal thread on the water outlet of a sanitary outlet fitting, wherein a housing front edge region arranged on the outflow side of the external thread is bent outwards, such that a drainage annular space is formed between the housing front edge region and the inner circumference of the water outlet, which is not shown further here;

Fig. 2 shows a longitudinal section of the jet regulator housing of fig. 1 in detail in the region of an external thread, screwed into an internal thread in the water outlet;

fig. 3 shows a top view of the jet regulator housing of fig. 1 and 2 on a housing end face on its outflow side;

fig. 4 shows a perspective view of a jet regulator housing of a further jet regulator, wherein an external thread is provided on the housing outer circumference of the jet regulator housing, said external thread having at least one cam-like protruding formation in a thread groove;

fig. 5 shows a perspective detail view of the external thread of the jet regulator housing shown in fig. 4 in the region of the cam-like formation;

fig. 6 shows a jet regulator constructed with the jet regulator housing in fig. 4 and 5, which is screwed into the water outlet of the sanitary outlet fitting by means of its external thread, wherein a longitudinal section through the jet regulator in fig. 6a through section VI-VI is shown, and fig. 6a shows a top view of the jet regulator on its inflow side;

fig. 7 shows a longitudinal section of a detail of the screw connection provided between the jet regulator and the water outlet in fig. 6 in the region of the cam-shaped profile;

fig. 8 shows the jet regulator in fig. 6 with the jet regulator housing already shown in fig. 4 to 7;

Fig. 9 shows a top view of the jet regulator of fig. 6 and 8 on the outlet-side housing end face;

fig. 10 shows an external thread of the jet regulator shown in fig. 6, 8 and 9, which is cut longitudinally on the jet regulator housing in four angular positions, wherein the angular positions for the longitudinal views are shown in fig. 8 and 9 and numbered;

fig. 11 shows a jet regulator housing of a further jet regulator, wherein at least one partition wall is visible, which protrudes over an external thread provided on the outer circumference of the housing and is designed as a fluid barrier;

fig. 12 shows a perspective detail view of an external thread provided on the outer housing circumference of the jet regulator housing shown in fig. 11 in the region of a partition wall serving as a liquid barrier;

fig. 13 shows a longitudinal section through section XIII-XIII according to fig. 13a of a jet regulator constructed with the jet regulator housing shown in fig. 11, which jet regulator is also screwed into the water outlet of the sanitary outlet fitting, wherein fig. 13a shows a plan view of the inflow side of the jet regulator;

fig. 14 shows a detail longitudinal section through an external thread of the jet regulator shown in fig. 13, which cooperates with an internal thread in the water outlet, in the region of the separating wall shown in detail in fig. 11 and 12;

Fig. 15 shows a further jet regulator, whose external thread provided on the outer circumference of the housing has, in the partial region of the outflow side, a thread contour which is partially offset from a thread groove which surrounds the cylindrical wall in a continuous spiral, wherein the offset in the thread contour can be cut into the internal thread in the water outlet in a tight manner;

fig. 16 shows a perspective detail view of the external thread of the jet regulator shown in fig. 15 in the region of the offset in the external thread;

FIG. 17 shows a perspective side view of the jet regulator of FIGS. 15 and 16;

fig. 18 shows a perspective detail view of the thread profile of the jet regulator already shown in fig. 15 to 17, which is formed offset on the outflow side of the external thread;

fig. 19 shows a bottom perspective view of the jet regulator of fig. 15-18;

fig. 20 shows a top view of the housing front of the outflow side of the jet regulator housing of the jet regulator in fig. 15 to 19;

fig. 21 shows an external thread cut longitudinally in four different angular positions, wherein the angular positions shown are numbered in fig. 19 and 20 and are shown in detail;

fig. 22 shows a longitudinal section through the jet regulator shown in fig. 15 to 21 in the water outlet of a sanitary outlet fitting;

Fig. 23a to 23c show the jet regulator in fig. 15 to 22 in a detail view in the region of its screw connection, wherein fig. 23a shows the jet regulator in the region of its external thread which cooperates with the internal thread in the water outlet, which has not yet been finally screwed in the water outlet, and fig. 23b shows the screw connection which cooperates between the external thread and the internal thread in the water outlet, wherein a thread offset provided at the outlet-side end region of the external thread begins to cut into the internal thread, and in fig. 23c shows the screw connection between the external thread on the jet regulator housing and the internal thread in the water outlet in the final screwed-in position;

fig. 24 shows a detailed longitudinal section through the jet regulator housing of the jet regulator shown in fig. 15 to 22 in the region of the drainage annular space;

fig. 25 shows a longitudinal section through the jet regulator of fig. 15 to 22 screwed into the water outlet of a sanitary outlet fitting through section XXV-XXV according to fig. 26;

fig. 26 shows a top view of the jet regulator of fig. 15 to 22 and 25 on the inflow side of the jet regulator and on an additional screen arranged there on the inflow side;

Fig. 27 shows a side view of a further jet regulator, in which the drainage annular space is connected via a drainage opening to an air-entraining channel which surrounds the interior of the housing in an annular manner, wherein a flange-like cross-sectional expansion protrudes above the drainage opening, which cross-sectional expansion limits leakage of leakage water into the drainage annular space;

FIG. 28 shows a longitudinal cross-sectional view of a jet regulator made using the jet regulator housing shown in FIG. 27;

fig. 29 shows a longitudinal section through a screw connection of the jet regulator of fig. 28 between one side of the jet regulator housing and the other side of the internal thread provided in the water outlet;

fig. 30 shows a side view of the jet regulator, wherein the jet regulator shown here has a flange-like cross-sectional expansion arranged above the water outlet, which cross-sectional expansion surrounds the outer circumference of the jet regulator housing;

FIG. 31 shows a longitudinal cross-sectional view of the jet regulator of FIG. 30; and

fig. 32 shows a detail longitudinal section through a screw connection between one external thread provided on the jet regulator housing and the other internal thread in the water outlet in the region of the cross-sectional expansion surrounding the jet regulator housing in a flange-like manner.

Detailed Description

Different embodiments 101, 104, 111, 115, 127 and 130 of the output flow regulator are shown in fig. 1 to 32. In the jet regulator 101, only the jet regulator housing is shown, but in fig. 6, 13, 22, 25, 28 and 31, longitudinal sectional views of the jet regulators 104, 111, 115, 127 and 130 are shown, which illustrate all the essential components of such a jet regulator by way of example.

The jet regulators 101, 104, 111, 115, 127 and 130 shown here have a jet regulator housing 1 which has an external thread 2 on its housing outer circumference. By means of the external thread 2 provided on the outer circumference of the housing, the jet regulators 101, 104, 111, 115, 127 and 130 can each be screwed into the internal thread 3 in the water outlet 4 of the sanitary outlet fitting, in order to shape the water flowing there into a uniform, splash-free and optionally also soft-beaded water jet. In order to seal the annular region 5 remaining between the outer housing circumference of the jet regulator housing 1 and the inner circumference of the water outlet 4 in order to prevent uncontrolled outflow of leakage water, the jet regulators 101, 104, 111 and 115 have a thread profile as the external thread 2 which deviates at least in some regions from a thread groove which surrounds the cylindrical wall in a continuous spiral. In this at least partially offset thread profile, the external thread 2 cooperates with the internal thread 3 provided in the water outlet 4 in a self-cutting or better adaptive manner, so that the screw connection is sealed particularly well in this region. In addition or as an alternative thereto, at least one cross-sectional expansion 6 or 7 is provided in the jet regulator 127 and 130, which is made of the same material as the housing section of the jet regulator housing with the external thread 2 and is integrally formed on the housing section, and which can be brought into close contact with the water outlet 4 on the end face and/or the inner circumferential side. Thanks to this particular design feature of the jet regulator housing shown here, even if the jet regulator is constructed (as here) without an additional elastic sealing ring for axial or radial sealing of the jet regulator housing 1, uncontrolled outflow of leakage water is effectively avoided by the annular region 5 arranged between the outer circumference of the jet regulator housing 1 and the inner circumference of the water outlet 4 under almost all operating conditions. In the jet regulators 101, 104, 111, 115, 127 and 130, the above-mentioned annular region can be reliably sealed even if the internal thread 3 in the water outlet cannot be produced with high precision, and even if an annular projection in the water outlet 4, which is required for axial sealing, should be dispensed with for low production effort in the production of the water fitting.

As is apparent from the longitudinal sections in fig. 6, 13, 22, 25, 28 and 31, the housing front edge region of the jet regulator housing 1, which is arranged on the outflow side of the external thread 2, is curved in the direction of the inner circumference of the water outlet 4, so that a drainage annular space 8 is formed between this housing front edge region and the inner circumference of the water outlet 4.

The jet regulators 101, 104, 111, 115, 127 and 130 are each formed here as jet air entrainment devices, which mix the water flowing through them with the ambient air. The jet regulators 101, 104, 111, 115, 127 and 130, which are embodied as jet air entrainment devices, have at least one entrainment opening 9 which is arranged on the outflow side of the external thread 2 and is embodied to open out towards the outflow side of the housing end side.

The jet regulator housing 1 of the jet regulators 101, 104, 111, 115, 127 and 130 shown here has at least two housing parts 10, 11 which are releasably connected to one another, wherein a first housing part 10 arranged on the outflow side has an external thread 2. The first housing part 10 on the outflow side is releasably connected on the inflow side to a second housing part 11 of the jet regulator housing 1, which has a jet splitter which splits the water flowing through into a plurality of individual jets.

The jet splitter of the jet regulator 111 shown in fig. 11 to 14 is embodied here as a perforated plate 30 which has a plurality of splitter openings 31 and is integrally molded into the second housing part 11. The decomposer openings 31 in the perforated plate oriented transversely to the flow direction form a cross-sectional taper which preferably tapers in the flow direction, in which the inflowing water increases in speed. By this increase in speed, a negative pressure is generated on the outflow side of the perforated plate 30, by means of which the ambient air can be sucked into the housing interior of the jet regulator housing 1. In order to thoroughly mix this ambient air with the water flowing through the interior of the housing, at least one insert 32, 33 is provided at a distance from the outflow side of the perforated plate 30, said insert having a grid or mesh structure of webs intersecting one another at intersecting points. In the grid structure or mesh structure of the inserts 32, 33, the oncoming water can additionally be separated, so that it can be mixed well with the inhaled ambient air before being combined in the flow rectifier after the water outlet end side of the jet regulator 111 into a uniform, non-splashing and beaded soft outflow jet.

In contrast, the jet splitter of the jet regulators 101, 104, 115, 127 and 130 is embodied as a diffuser with a basin-shaped jet splitter insert 12, which has a plurality of splitter openings 13 on its basin circumference in the shape of a basin, and with a basin bottom 14, which is embodied as a baffle surface for diverting the oncoming water toward the splitter openings 13.

The second housing part 11 encloses a jet splitter insert 12 of the jet splitter. The second housing part 11 tapers conically in its clear housing cross section, so that an annular gap 15 is formed between the jet splitter insert 12 and the housing inner circumference of the second housing part 11, which tapers on the outflow side toward an annular opening 16 into the housing interior.

A sleeve-shaped guide wall 17 is provided in the jet regulator housing 1, between which at least one air supply channel 18 is provided and the housing inner circumference of the jet regulator housing 1. The air supply channel 18 leads from at least one air supply opening 9 arranged on the outflow side of the housing into the interior of the housing. Since the water which is divided into individual jets in the jet splitter undergoes a velocity increase in the annular gap 15, according to the bernoulli equation, a negative pressure is generated on the outflow side 15 of the annular gap 15 in the region of the annular opening 16, which negative pressure draws ambient air from the outside through the air-entraining channel 18 into the partial region of the housing interior which serves as the mixing region 20. Where the flowing water is mixed with the inhaled ambient air.

As can be seen clearly in the longitudinal sectional views according to fig. 6, 13, 22, 25, 28 and 31, the housing part region or the housing front edge region of the jet regulator housing 1 arranged on the outflow side of the external thread 2 is curved in the direction of the inner circumference of the water outlet 4, so that a drainage annular space 8 is formed between this housing front wall region and the inner circumference of the water outlet 4. In order to keep the leakage water that escapes between the inner circumference of the housing of the jet regulator housing 1 and the inner circumference of the water outlet 4 via the annular region 5 well in the drainage annular space 8, the front housing edge of the outflow side of the jet regulator housing 1 is designed as a lip seal 21, which can rest on the inner circumference of the water outlet 4, but here only close to the inner circumference of the water outlet 4. The annular gap is additionally sealed by capillary forces in this region and by rapid calcification in the annular region between the housing front edge formed as annular seal 21 and the inner circumference in water outlet 4.

As can be seen in the longitudinal sectional views according to fig. 6, 13, 22, 25, 28 and 31, at least one drain opening 22 is provided in the partial region of the housing wall of the jet regulator housing 1, which is arranged between the housing front edge on the outflow side and the external thread 2, said drain opening leading from the drain annular space 8 to the air-filling channel 18. The air sucked in through the air-entraining channel 18 can thus carry away and introduce the leakage water flowing out of the drain annular space 8 via the drain opening 22 into the housing interior space, where it mixes with the water flowing through it.

The lattice or mesh 23 of webs which cross each other at the crossing points is integrally molded onto the guide wall 17 on the outflow side. The through-flow openings 24 of the lattice structure or mesh structure 23 formed between adjacent webs, which here have a net opening cross section of honeycomb hexagon, preferably have a longitudinal extension which is greater than the opening cross section, but at least long enough to combine the water mixed in the interior of the housing into a uniform water jet. The guide wall 17 is connected in a rotationally fixed manner to the jet regulator housing 1 and in particular to the first housing part 10 on the outflow side, and is preferably connected in one piece. At least one tool-acting surface for rotating the tool is provided on the guide wall 17. For this purpose, at least one slit-shaped recess 29 for inserting a coin or another rotary tool serving as a rotary tool is provided in the grid or mesh structure 23. The recess 29 is delimited by opposing slit longitudinal walls. The slit longitudinal walls of the recess 29 form a tool active surface for the rotating tool.

In order to form the external thread 2 (which has a thread profile deviating from the thread groove which runs continuously helically around the cylindrical wall), in the jet regulator shown in fig. 1 to 3, an external envelope circle of the external thread on the jet regulator housing for screwing with the internal thread 3 formed into the cylindrical water outlet 4 tapers toward the outflow side. Fig. 2 shows an external thread 2, which is tapered toward the outflow side, at the point where the jet regulator 101 is screwed into the internal thread. Due to the taper of the external thread 2, the uppermost thread pitch on the inflow side remains free in the internal thread 3, whereas the thread pitch following the next thread pitch projects deeper into the thread groove of the internal thread 3 due to the taper of the external thread starting there. The last thread pitch of the external thread 2 on the outflow side almost completely closes the assigned thread groove of the internal thread 3, so that leakage water can no longer escape via this screw connection.

Another offset of the thread profile forming the external thread 2 is shown in the jet regulator 104 according to fig. 4 to 10. In this jet regulator, a cam-shaped molding 28 is formed on the external thread 2 arranged on the outer circumference of the housing, which cam-shaped molding extends approximately in the longitudinal direction of the recess into one of the thread grooves of the external thread. The cam-shaped profile 28 protrudes beyond the envelope circle surrounding the external thread 2. When the male thread 2 is screwed into the female thread 3, the cam-shaped profile 28 seals in the groove base of the adjacent female thread 3, on the side of the female thread 3 and at the tip of the thread contour, when the cam-shaped profile 28 cuts deep into the female thread 2.

Another offset in the thread profile forming the external thread 2 is realized in the jet regulator 111 shown in fig. 11 to 14. Also in the jet regulator 111, at least one molding, which serves as a liquid barrier, is provided on the outer circumference of the jet regulator housing 1, which molding protrudes into at least one thread groove of the external thread 2. However, the at least one molding is formed here as a dividing wall 26 which extends over at least two thread grooves of the external thread 2 and extends approximately axially parallel to the housing longitudinal axis of the jet regulator housing 1. Since the formation of the partition wall 26 is designed such that it largely exceeds the envelope circle surrounding the external thread 2, it is at the same time also a cross-sectional expansion beyond the adjoining region of the jet regulator housing 1, which is of the same material as and is integrally formed on the housing section of the jet regulator housing 1 with the external thread 2, and which rests closely on the water outlet 4 on the inner circumferential side and prevents leakage of water via the screw connection.

In the jet regulator 115 shown in fig. 15 to 26, too, the external thread 2 is formed at least partially offset from the thread contour of the thread groove which runs continuously helically around the cylindrical wall. For this purpose, the thread profile of the external thread protruding from the thread groove preferably extends at least in sections in the thread section on the outflow side, and in this way forms a sealing wedge 27, which is shown in detail in fig. 15 to 18. Fig. 23a to 23c show how the profile forming the thread profile of the external thread 2 is designed as a sealing wedge 27 which cuts into the internal thread 3 of the water outlet fitting more and more when the external thread 2 is screwed in. In fig. 23a, the external thread 2 has not yet been fully screwed into the internal thread 3 and has not yet been cut into a profile which is designed as a sealing wedge 27, while in fig. 23b it is shown how this profile starts to gradually cut into the internal thread 3 when the external thread 2 is further screwed in. In fig. 23c, the jet regulator is fully installed and the profile of the sealing wedge 27 is configured to fully engage the internal thread 3. The overlapping shaded portions in fig. 23c represent: here, the material of the molding part provided in the male screw 2 and/or the material of the molding part of the female screw 3 is extruded.

The jet regulator housing 1 can also have at least one cross-sectional expansion 6, 7 on its outer housing circumference, which is made of the same material as the housing section of the jet regulator housing 1 with the external thread 2 and is integrally formed on this housing section, and which adjoins the water outlet 4 on the end face and/or the inner circumference. The cross-sectional extensions 6, 7 are formed in the jet regulators 127 and 130 in a flange-like manner and extend in the circumferential direction of the jet regulator housing 1 over at least one of the water outlet openings 22. Flange-like cross-sectional extensions 6, 7 on the outer circumference of the jet regulator housing 1 of the jet regulators 127, 130 are arranged between the external thread 2 and the at least one drain opening 22. In the jet regulator 127 shown in fig. 27 to 29, the flange-shaped cross-sectional expansion 6 is arranged directly above one of the water outlet openings on the inflow side, whereas in contrast to the jet regulator 130 shown in fig. 30 to 32, has the flange-shaped cross-sectional expansion 7, which is formed as an annular flange surrounding the jet regulator housing 1. The flange-shaped cross sections 6, 7 on the jet regulators 127, 130 are also formed here as screw-in stops, which delimit the screw-in of the external thread 2 into the internal thread 3 in the water outlet 4 of the water outlet fitting. The cross-sectional expansion can be in close contact with the outlet end side of the outlet opening or (as in this case) with the inner circumference of the outlet opening.

The jet regulator shown here is distinguished by a high tightness in the region of the annular region 5 between the outer housing circumference of the jet regulator housing 1 and the inner circumference in the water outlet 4 of the water outlet fitting, without the need for a separate and in particular differently-made sealing ring for sealing. Thus, the jet regulators 101, 104, 111, 115, 127 and 130 shown here are constructed without sealing rings, and it is sufficient that sealing rings made of an elastic material are not required separately from the jet regulator housing 1.

List of reference numerals:

1. jet regulator casing

2. External screw thread

3. Internal thread

4. Water outlet

5. Annular region

6. Flange-like cross-sectional expansion (on jet regulator 127 according to fig. 27 to 29)

7 circumferential flange-like cross-section expansion (on jet regulator 130 according to fig. 30 to 32)

8. Drainage annulus

9. Gas inlet

10. First outflow side housing part

11. A second housing part

12. Jet splitter insert

13. Decomposer opening

14. Basin bottom

15 Annular gap (in jet splitter)

16 Annular opening (of annular gap 15)

17. Guide wall

18. Air-entrapping channel

19. Passage opening

20. Mixing region

21. Lip seal

22. Water outlet

23. Grid or mesh structure

24. Through-flow opening

26. Partition wall

27. Sealing wedge

28. Cam-shaped forming part

29. Blank part

30. Orifice plate

31. Decomposer opening

32. Insert piece

33. Insert piece

101 jet regulator according to figures 1 to 3

104 jet regulator according to fig. 4 to 10

111 jet regulator according to fig. 11 to 14

115 jet regulator according to fig. 15 to 26

127 jet regulator according to fig. 27 to 30

130 jet regulator according to figures 30 to 32

Claims

1. A jet regulator (101, 104, 111, 115, 127, 130) having a jet regulator housing (1), which jet regulator housing (1) has an external thread (2) on its housing outer circumference for screwing into an internal thread (3) in a water outlet (4) of a sanitary outlet fitting, characterized in that the jet regulator housing (1) has at least one cross-sectional expansion (6, 7) which is of the same material as a housing section of the jet regulator housing (1) with the external thread (2) and is integrally formed thereon, which cross-sectional expansion can be tightly applied on the end side and/or on the inner circumferential side to the water outlet (4), a sleeve-shaped guide wall (17) being provided in the jet regulator housing (1), and at least one channel (18) being provided between the housing inner circumference of the jet regulator housing (1) and the guide wall (17), at least one outlet channel (18) being provided between the air-filling side housing wall (1) and the air-filling side housing (8) and at least one outlet channel (18) being provided in the outer circumferential region of the housing (8), the at least one flange-shaped cross-sectional expansion (6, 7) is provided on the outer circumference of the housing of the jet regulator housing (1) between the external thread (2) and the at least one drain opening (22).

2. The jet regulator according to claim 1, characterized in that the jet regulator (101, 104, 111, 115, 127, 130) is designed as a jet aerator which mixes water flowing through it with ambient air, and in that the jet aerator has at least one aeration opening (9) in a housing section of the jet regulator housing (1) which is arranged on the outflow side of the external thread (2) and which is arranged on the housing circumference or on the housing end side of the jet regulator housing (1).

3. Jet regulator according to claim 1 or 2, characterized in that the jet regulator housing (1) has at least two housing parts (10, 11) which can be connected to one another.

4. A jet regulator according to claim 3, characterized in that the housing parts (10, 11) are releasably connectable to each other.

5. A jet regulator according to claim 3, characterized in that the first housing part (10) arranged on the outflow side is provided with said external thread (2).

6. Jet regulator according to claim 5, characterized in that the first housing part (10) on the outflow side can be connected to the second housing part (11) of the jet regulator housing (1) on the inflow side, the second housing part (11) having a jet splitter which splits the flowing water into a plurality of individual jets.

7. Jet regulator according to claim 6, characterized in that the jet splitter is configured as a diffuser with a basin-shaped jet splitter insert (12), the jet splitter insert (12) having a plurality of splitter openings (13) on its basin circumference in the shape of a basin, and the jet splitter insert (12) having a basin bottom (14) which is configured as a deflector surface for deflecting the oncoming water towards the splitter openings (13).

8. Jet regulator according to claim 7, characterized in that the second housing part (11) encloses the jet splitter insert (12) and in that the second housing part (11) tapers at least in the region of the splitter opening (13) such that an annular gap (15) is formed between the jet splitter insert (12) and the housing inner circumference of the second housing part (11), the annular gap (15) tapering on the outflow side towards an annular opening (16) into the housing interior.

9. Jet regulator according to claim 1 or 2, characterized in that the entrainment channel (18) leads from at least one entrainment port (9) provided on the outflow side of the housing to the interior of the housing.

10. Jet regulator according to claim 1 or 2, characterized in that a housing part-area of the jet regulator housing (1) arranged on the outflow side of the external thread (2) is curved towards the inner circumference of the water outlet (4) such that the drainage annular space (8) is formed between the housing part-area and the inner circumference of the water outlet.

11. Jet regulator according to claim 10, characterized in that the outlet-side housing front edge of the jet regulator housing (1) is designed as a lip seal (21), which lip seal (21) rests on the inner circumference of the water outlet (4) or is adjacent to the inner circumference of the water outlet (4).

12. Jet regulator according to claim 1 or 2, characterized in that a lattice structure (23) consisting of webs intersecting each other at an intersection point is integrally molded onto the guide wall (17) on the outflow side.

13. Jet regulator according to claim 12, characterized in that the guide wall (17) is connected to the jet regulator housing (1) in a rotationally fixed manner and that at least one tool active surface for rotating a tool is provided on the guide wall (17) and/or on the grid structure (23).

14. Jet regulator according to claim 13, characterized in that the jet regulator housing (1) has at least two housing parts (10, 11) which can be connected to one another, the guide wall (17) being connected in a rotationally fixed manner to the first housing part (10) on the outflow side of the jet regulator housing (1).

15. Jet regulator according to claim 13, characterized in that the guide wall (17) is connected in one piece with the jet regulator housing (1).

16. Jet regulator according to claim 14, characterized in that the guide wall (17) is connected in one piece with the first housing part (10).

17. Jet regulator according to claim 13, characterized in that at least one slit-shaped recess (29) is provided in the grid structure (23) for inserting coins or other rotary tools serving as rotary tools, which recess is delimited by opposing slit-shaped longitudinal walls forming a tool-active surface for the rotary tool.

18. Jet regulator according to claim 1 or 2, characterized in that an outer envelope body formed on the jet regulator housing (1) by means of an external thread (2) for screwing with the internal thread formed into the cylindrical water outlet expands towards the outflow side.

19. The fluidic regulator of claim 18, wherein the outer envelope body tapers toward the outflow side.

20. Jet regulator according to claim 1 or 2, characterized in that at least one molding (26, 28) serving as a liquid barrier is provided on the outer circumference of the jet regulator housing (1), which molding projects into at least one thread groove of the external thread (2).

21. Jet regulator according to claim 20, characterized in that the at least one shaping (26, 28) extends to or at least partly protrudes beyond an envelope body surrounding the external thread (2).

22. The jet regulator of claim 20, wherein the at least one formation is configured as a dividing wall extending over at least two adjacent thread grooves of the external thread.

23. Jet regulator according to claim 22, characterized in that the partition wall extends substantially with its axis parallel to the housing longitudinal axis of the jet regulator housing (1).

24. The jet regulator of claim 22, wherein the at least one profiled section is configured as a cam and the cam-shaped profiled section extends in the thread groove substantially in the groove longitudinal direction.

25. Jet regulator according to claim 20, characterized in that the thread profile of the external thread (2) protruding from the thread groove is at least partially expanded.

26. Jet regulator according to claim 25, characterized in that the thread profile expands in the thread section (27) on the outflow side.

27. Jet regulator according to claim 1 or 2, characterized in that the at least one cross-sectional expansion (6, 7) protrudes in a flange-like manner over the outer housing circumference of the jet regulator housing (1).

28. Jet regulator according to claim 27, characterized in that the flange-like cross-sectional expansion (6, 7) extends over the at least one drain opening (22) in the circumferential direction of the jet regulator housing.

29. Jet regulator according to claim 1 or 2, characterized in that the flange-like cross-sectional expansion is embodied interrupted between adjacent water outlet openings (22) and/or essentially delimits the circumferential direction to the extension of the water outlet opening (22) and/or is associated with one water outlet opening each.

30. Jet regulator according to claim 1 or 2, characterized in that the flange-like cross-sectional expansion is formed as an annular flange encircling the jet regulator housing (1).

31. Jet regulator according to claim 1 or 2, characterized in that the at least one flange-like cross-sectional expansion (6, 7) is designed as a screw-in stop, which delimits the screw-in of the external thread (2) into the internal thread (3) in the water outlet (4) of the sanitary outlet fitting.

32. The jet regulator according to claim 1 or 2, characterized in that the jet regulator (101, 104, 111, 115, 127, 130) is constructed without a sealing ring and does not require a sealing ring made of an elastic material separately from the jet regulator housing (1).

33. The jet regulator according to claim 6, characterized in that the jet splitter is configured as an orifice plate (30) with a splitter opening.

34. The jet regulator of claim 33, wherein the resolver opening is at least partially tapered in the flow direction.

35. Jet regulator according to claim 6, characterized in that at least one insert (32, 33) is connected downstream of the jet splitter at a distance in the flow direction, the inserts (32, 33) having a grid structure of tabs intersecting each other at intersecting nodes.

36. Jet regulator according to claim 35, characterized in that the lattice structure (23) provided in the at least one insert (32, 33) and/or integrally molded onto the guide wall (17) has through-flow openings (24) with a honeycomb-shaped and/or hexagonal net opening cross section.

37. Jet regulator according to claim 35, characterized in that the grating structure provided in the at least one insert (32, 33) and/or integrally molded to the guide wall (17) is formed by at least two concentrically encircling tabs, which are connected to a set of radial tabs.

38. The jet regulator of claim 35, wherein the lattice structure integrally formed in the at least one insert and/or integrally formed on the guide wall has a set of axially parallel first tabs intersecting a set of axially parallel second tabs disposed at an angle to the first tabs.

39. The jet regulator of claim 38, wherein the angle is a right angle.

40. Jet regulator according to claim 35, characterized in that the lattice structures integrally formed in the insert and/or on the guide wall are formed by webs intersecting one another, which webs are arranged at an angle to one another, so that the lattice structures are decorated with a pattern of differently shaped through-flow openings over their clear opening cross section.