CN109457767B

CN109457767B - Jet regulator

Info

Publication number: CN109457767B
Application number: CN201810211508.4A
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: 2018-03-15
Publication date: 2021-02-26
Anticipated expiration: 2038-03-15
Also published as: BR112019027225A2; CN208586700U; CN113356310A; CN109457767A; ES2880363T3; EP3708723B1; DE202017105378U1; CN111094670B; US20200224395A1; ES2908051T3; PL3708723T3; EP3649300A1; MX2019014707A; EP3708723A1; CN113356310B; EP3649300B1; PL3649300T3; CN111094670A; WO2019048113A1; BR112019027225B1

Abstract

The invention relates to a jet regulator (104) having a jet regulator housing (1), the jet regulator housing (1) having an external thread (2) on its housing outer circumference in order to be screwed into an internal thread (3) in a drain opening (4) of a sanitary drain fitting. The jet regulator according to the invention is characterized in that the jet regulator housing (1) has, on its housing outer circumference, a thread profile as an external thread (2) which at least partially differs from a thread cut which helically runs continuously around the cylindrical wall and in which the thread profile interacts in a self-adapting manner with an internal thread (3) provided in the drain opening (4), and/or that the jet regulator housing has at least one cross-sectional enlargement (6, 7) which is integrally formed on the housing section of the jet regulator housing (1) with the external thread (2) and is made of the same material as the housing section, and which can be applied in a sealing manner on the end side and/or on the inner circumferential side to the drain opening (4).

Description

Jet regulator

Technical Field

The invention relates to a jet regulator having a jet regulator housing which has an external thread on its housing outer circumference for screwing into an internal thread in a drain opening of a sanitary drain fitting.

Background

Various embodiments of the jet regulator have been proposed to form the water flowing out of the drain opening of the sanitary drain fitting into a uniform and non-splashing water jet. For this purpose, previously known jet regulators are fitted to the sanitary outlet fitting in the region of the water outlet opening.

A jet regulator of the type mentioned at the outset is known from EP 3153633 a1, which has an external thread on the housing outer circumference of its jet regulator housing, with which the jet regulator housing can be screwed into an internal thread in the drain opening of a sanitary drain fitting. In order to avoid the need to seal the known jet regulator in the region of the annular gap between the jet regulator housing and the inner periphery of the outlet opening by means of at least one separate sealing ring made of an elastic material, the external thread is arranged in the known jet regulator directly below at least one air vent which extends through the housing peripheral wall of the jet regulator housing and through which, in addition to ambient air, leakage water which may have passed through the annular gap as a result of the threaded connection between the external thread and the internal thread can also be sucked into the housing interior. As soon as the water flows through the known jet regulator and a negative pressure is thereby created here at least one of its aeration openings, the known jet regulator can bring together a portion of the leakage water which is screwed in to the interior of the housing. However, since the air openings in any case extend only over a partial circumference of the jet regulator housing, there is the following risk: the remaining leakage water is discharged in an interfering manner through the annular gap remaining between the outer housing periphery of the jet regulator housing and the inner periphery in the outlet opening of the sanitary outlet fitting and on the outflow-side end face end of the outlet opening.

Disclosure of Invention

In particular, it is therefore the object of the invention 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 housing periphery of the jet regulator housing and the inner periphery in the drain opening of the sanitary drain fitting.

In a jet regulator of the type mentioned at the outset, the object is achieved according to the invention in that the jet regulator housing has, on its housing outer circumference, a thread profile as an external thread which at least partially differs from a thread cut which helically runs continuously around the cylindrical wall, said thread profile interacting in this region with an internal thread provided in the drain opening in a self-adapting manner, and/or that the jet regulator housing has at least one cross-sectional enlargement which is formed integrally on the jet regulator housing and is identical in material to the externally threaded housing section of the jet regulator housing, and which can be applied in a sealing manner on the end side and/or on the inner circumferential side to the drain opening.

The jet regulator according to the invention has a jet regulator housing which has an external thread on its housing outer circumference. By means of the external thread provided on the outer circumference of the housing, the jet regulator according to the invention can be screwed into the internal thread in the outlet opening of the sanitary outlet fitting in order to form the water discharged there into a uniform, non-splashing and, if appropriate, also soft jet of balls. In order to seal the annular region remaining between the outer periphery of the housing of the jet regulator housing and the inner periphery of the drain opening against uncontrolled discharge of the drain water, it is proposed according to the proposal according to the invention that the jet regulator housing has, as an external thread, a thread profile which differs at least in sections from a thread cut which continuously surrounds the cylindrical wall in a spiral shape. In this thread form, which is configured at least in some regions differently, the external thread interacts in a self-adapting manner with an internal thread provided in the drain opening, so that the threaded connection is particularly well sealed in this region. In addition or instead of this, it is proposed according to a further proposal of the invention that the jet regulator housing has at least one cross-sectional enlargement which is formed integrally on and of the same material as the externally threaded housing section of the jet regulator housing and which can be applied sealingly on the end side and/or the inner peripheral side on the drain opening. Due to this special constructional feature of the jet regulator housing, uncontrolled discharge of leakage water through the annular region provided between the outer periphery of the jet regulator housing and the inner periphery in the drain opening is effectively avoided under almost all operating conditions when the jet regulator according to the invention is constructed for axial or radial sealing of the jet regulator housing without additional elastic sealing rings. With the jet regulator according to the invention, the above-mentioned annular region is still reliably sealed when the internal thread in the drain opening cannot be produced with high precision and when the annular shoulder required for axial sealing in the drain opening should be omitted for lower production expenditure in the production of the drain fitting.

Due to its special constructional features, the jet regulator according to the invention is also relatively insensitive to calcification in the region of its jet regulator housing. According to a preferred embodiment of the invention, it is therefore provided that the jet regulator is designed as a jet aerator which mixes the water flowing through the jet aerator with ambient air and that the jet aerator has at least one air opening for this purpose in a housing section of the jet regulator housing which is arranged on the outflow side of the external thread, said air opening being arranged on the housing periphery or on the housing end side of the jet regulator housing.

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

The water flowing through the jet regulator housing can be shaped particularly effectively if the first housing part on the outflow side is preferably detachably connectable on the inflow side to a second housing part of the jet regulator housing, which second housing part carries the 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 provided that the jet splitter is designed as a diffuser with a pot-shaped jet splitter insert which has a plurality of splitter openings on its pot periphery in the form of a pot and a pot bottom which is designed as a baffle surface which diverts the inflowing water to the splitter openings.

In order to divide the water flowing out into the jet regulator housing firstly into individual jets and in order to accelerate the individual jets subsequently so 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 splitter opening, so that an annular gap is formed between the jet splitter insert and the housing inner periphery of the second housing part, which annular gap tapers on the outflow side toward the annular opening into the housing interior.

According to a preferred refinement of the invention, a sleeve-like guide wall is provided in the jet regulator housing, and at least one ventilation channel is provided between the housing inner periphery of the jet regulator housing and the guide wall, said ventilation channel leading from at least one ventilation opening provided on the housing outflow side into the housing interior. In this improved 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 ventilation channel and the at least one air vent can thus be arranged on the inner surface of the jet regulator configured as a jet aerator, accelerated calcification in an annular region between the housing outer circumference of the jet regulator housing and the inner circumference in the drain opening is effectively suppressed.

According to a particularly advantageous development of the invention, the housing end face edge region of the jet regulator housing, which is arranged on the outflow side of the external thread, is bent in the direction of the inner periphery of the water outlet opening, so that a discharge annular space is formed between said housing end face edge region and the inner periphery of the water outlet opening. Leakage water which, via the threaded connection, passes through the annular region between the outer periphery of the housing and the inner periphery of the drain opening until it reaches the end-face peripheral edge region of the outflow-side of the jet regulator housing accumulates there in a discharge annular space which is formed between the housing end-face edge region of the outflow side and the inner periphery of the drain opening.

In this case, a particularly advantageous, particularly sealed embodiment according to the invention provides that the housing end face edge on the outflow side of the jet regulator housing is designed as a lip seal which rests on or close to the inner periphery of the water outlet opening. The housing end face edge on the outflow side and designed as a lip seal can be sealingly placed against the inner circumference of the drainage opening. However, it is also possible for the housing end face edge to be only close to the inner periphery of the drain opening, so that leakage water which accumulates in the drain annular space remains there as a result of capillary forces, or for the annular gap which remains between the lip seal on the one hand and the inner periphery of the drain opening on the other hand to be sealingly closed by a functionally intact calcification which may be desired in this region.

In order to continuously drain the outlet annular space during operation of the jet regulator according to the invention, it is advantageous if at least one outlet opening is provided in a subregion of the housing wall of the jet regulator housing which is arranged between the housing end side on the outflow side and the external thread, said outlet opening leading from the outlet annular space to the ventilation duct or to the at least one ventilation duct. The ambient air drawn into the housing interior of the jet aerator through the aeration channel can thus carry away leakage water from the discharge opening together, which mixes in the housing interior with the water flow flowing through the jet regulator housing.

The jet regulator according to the invention is also protected against incorrect handling in the case of a grid or lattice structure formed in one piece on the outflow side from webs which intersect one another at intersection points, with the grid or lattice structure being formed integrally on the guide wall. The outlet-side grid or mesh structure and the structure located behind it in the interior of the housing can therefore be pressed upwards against the flow direction of the water, and can also serve as a flow straightener which combines the water, which is in particular mixed with the ambient air, into a uniform water jet.

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

In this case, according to a particularly simple to produce and easy to handle embodiment of the invention, it is proposed that at least one slot-like recess for the insertion of coins or other rotary tools used as rotary tools be provided in the grid or lattice structure, said recess being delimited by opposing slot longitudinal walls which form the tool active surface for the rotary tool.

According to a structurally simple and well-sealed embodiment of the invention, in which the external thread forms a thread profile which differs at least in sections from a thread cut which runs helically continuously around the cylindrical wall, it is proposed that the outer envelope circle of the external thread on the jet regulator housing for screwing with the internal thread formed into the cylindrical drain opening preferably widens conically towards the outflow side. In this embodiment, the external thread with its conically expanding thread section engages deeply into the circumferential thread cutout of the internal thread provided in the drain opening, so that the annular region between the external thread on the outer circumference of the housing on the one hand and the internal thread in the drain opening on the other hand is effectively sealed off against the penetration of leakage water.

In any case, the penetration of leakage water is expected via the threaded connection between the internal thread and the external thread. In order to protect the pitch of the threaded connection against penetration of leakage water, it is expedient if at least one profile serving as a liquid barrier is provided on the housing outer circumference of the jet regulator housing, which profile projects into at least one thread cutout of the external thread.

In order to be able to insert the profile serving as a liquid barrier deeply into the thread cut of the internal thread provided on the drain opening, it is expedient if at least one profile extends as far as or at least partially beyond the envelope circle of the enveloping external thread.

In order to facilitate a particularly effective sealing, the at least one profile is formed as a separating wall which extends over at least two adjacent thread cutouts of the external thread.

In accordance with an embodiment of the invention which is easy to handle, easy to produce and highly effective in sealing (in which the separating wall is formed in the external thread in contrast to a thread cut which runs helically continuously around the cylindrical wall), it is proposed that the at least one separating wall extends at least axially parallel to the housing longitudinal axis of the jet regulator housing.

In addition or instead, however, the difference proposed according to the invention in the external thread is also embodied as at least one cam-shaped profile, wherein the cam-shaped profile extends in the thread cutout substantially in the longitudinal direction of the cutout.

However, it is also possible for the thread profile of the external thread which projects beyond the thread cut to be enlarged at least partially and preferably in the outflow-side thread section, so that the external thread can be cut sealingly deep into the internal thread with this outflow-side enlarged thread section.

In order to provide the housing outer circumference of the jet regulator housing with a cross-sectional enlargement, according to an embodiment of the invention, it is proposed that the at least one cross-sectional enlargement projects in the shape of a flange on the housing outer circumference of the jet regulator housing.

In this case, the flange-like at least one cross-sectional enlargement extends in the housing circumferential direction of the jet regulator housing over the at least one outlet opening.

In order to be able to penetrate only a small part of the leakage water into the discharge annular space in any case, it is expedient if at least one cross-sectional enlargement in the form of a flange is arranged on the housing outer circumference of the jet regulator housing between the external thread and the at least one discharge opening.

According to a particularly sealed embodiment of the invention, the flange-like cross-section enlargement is designed as an annular flange surrounding the damper housing.

According to a preferred embodiment of the invention, it is provided that the flange-like at least one cross-sectional enlargement is designed as a screwing stop which limits the screwing of the external thread into the internal thread in the outlet opening of the outlet fitting.

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

In the above-described exemplary embodiments, the jet splitter is designed as a diffuser. In a specific application, an embodiment of a design different from this provides that the jet splitter is designed as a perforated plate with splitter openings. In order to generate a corresponding underpressure on the outflow side of the jet splitter, which is designed as a perforated plate, it is advantageous if the splitter openings are at least partially constricted in the flow direction.

In order to subsequently reshape the individual jets coming from the jet splitter and possibly mixed with ambient air into a uniform jet which emerges from the jet regulator in a non-splash manner, it is advantageous if at least one insert part having a lattice or grid structure of webs which intersect one another at intersection points is connected downstream of the jet splitter in the flow direction at a distance.

According to an advantageous further development of the invention, it is provided that the grid or lattice structure provided in the at least one insert part and/or integrally formed on the guide wall has through-flow openings with a honeycomb-like and/or hexagonal inner opening cross section.

An embodiment which is designed differently from this provides that the lattice or lattice structure provided in the at least one insert part and/or integrally formed on the guide wall is formed by at least two concentrically surrounding webs which are connected to a set of radial webs.

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

According to a further proposal of the invention, the grid or lattice structure in the insert part and/or integrally formed on the guide wall is formed by webs which intersect one another and are arranged at an angle to one another, so that the grid or lattice structure is decoratively formed by through-flow openings which are shaped in a non-uniform manner in the cross section of the inner openings thereof.

Drawings

The expansion according to the invention results from the claims with reference to the drawings and the description. The invention is described in more detail below with the aid of preferred embodiments:

the figures show:

fig. 1 is a perspective view of a jet regulator housing of the jet regulator, which has an external thread on its jet regulator housing, with which the jet regulator can be screwed into an internal thread on a water outlet of a sanitary outlet fitting, wherein a housing end face edge region arranged on the outflow side of the external thread is bent outward in such a way that a discharge annular space is formed between this housing end face edge region and an inner periphery of the water outlet, which is not illustrated in detail here;

fig. 2 is a longitudinal section through a detail of the jet regulator housing of fig. 1 screwed into an internal thread in the drain opening in the region of the external thread;

fig. 3 is a plan view of the housing end face of the jet regulator housing of fig. 1 and 2, toward the outflow side thereof;

fig. 4 is 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 projecting profile in a thread cutout;

fig. 5 is a perspective detail view of the external thread of the jet regulator housing shown in fig. 4 in the region of the cam-shaped profile;

fig. 6 shows a jet regulator equipped with the jet regulator housing of fig. 4 and 5, which is screwed with its outer thread into an inner thread in the drain opening of the sanitary drain fitting, wherein the longitudinal section of the sections VI to VI of the jet regulator is shown in fig. 6a and fig. 6a shows a plan view of the jet regulator towards its inflow side;

FIG. 7 is a detail longitudinal section through the threaded connection provided between the jet regulator and the drain opening of FIG. 6 in the region of the cam-shaped profile;

fig. 8 comprises the jet regulator of fig. 6 of the jet regulator housing already shown in fig. 4 to 7;

fig. 9 is a top view of the outlet side housing end face of the jet regulator of fig. 6 and 8;

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

fig. 11 shows a jet regulator housing of a further jet regulator, in which at least one separating wall which projects beyond an external thread provided on the outer periphery of the housing and is designed as a liquid barrier can be seen;

fig. 12 is a perspective detail view of the external thread provided on the housing outer periphery of the jet regulator housing shown in fig. 11 in the region of the separating wall serving as a liquid barrier;

fig. 13 is a longitudinal section through section XIII-XIII in fig. 13a of a jet regulator designed using the jet regulator housing shown in fig. 11, which 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 is a detail longitudinal section through the jet regulator shown in fig. 13, of an external thread which interacts with an internal thread in the water outlet, in the region of the separating wall shown in more detail in fig. 11 and 12;

fig. 15 shows a further jet regulator, the external thread provided on the outer periphery of the housing having, in the outflow-side partial region, a thread profile which differs locally from a thread cut which runs helically continuously around the cylindrical wall, wherein this difference in the thread profile can be cut in a sealing manner into an internal thread of the drain opening;

fig. 16 is a perspective detail view of the outer thread of the jet regulator shown in fig. 15 in this distinguished region in the outer thread;

fig. 17 is a perspective side view of the jet regulator of fig. 15 and 16;

fig. 18 is a perspective detail view of the jet regulator already shown in fig. 15 to 17 in the region of a thread profile of the external thread which is differently designed on the outflow side;

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

fig. 20 is a top view of the jet regulator of fig. 15 to 19, toward the outlet side housing end face of the jet regulator housing;

FIG. 21 is a longitudinal cut through the external thread in four different angular positions, wherein the angular positions shown are numbered in FIGS. 19 and 20 and are further shown;

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

fig. 23a to 23c fig. 15 to 22 show the jet regulator in its threaded connection region in a detail view, wherein fig. 23a shows the jet regulator not yet finally screwed into the drain opening in the region of its external thread which interacts with the internal thread in the drain opening, fig. 23b shows the threaded connection which interacts between the external thread and the internal thread in the drain opening, wherein the thread difference provided on the outflow-side end region of the external thread starts to cut into the internal thread, and fig. 23c shows the threaded connection between the external thread on the jet regulator housing and the internal thread in the drain opening in the finally screwed-in position;

fig. 24 is a detail longitudinal section of the jet regulator housing of the jet regulator shown in fig. 15 to 22 in the region of the discharge annular space;

fig. 25 is a longitudinal section through section XXV-XXV in fig. 26 of the jet regulator of fig. 15 to 22 screwed into the outlet opening of the sanitary outlet fitting;

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

fig. 27 is a side view of another jet regulator in which the discharge annular space is connected to a ventilation channel annularly surrounding the interior of the housing through a discharge opening above which a flange-like cross-sectional enlargement projects, said cross-sectional enlargement limiting the penetration of leakage water into the discharge annular space;

fig. 28 is a longitudinal section through the jet regulator completed using the jet regulator housing shown in fig. 27;

fig. 29 is a detail longitudinal section through the threaded connection between the jet regulator housing on the one hand and the internal thread provided in the water outlet on the other hand of the jet regulator of fig. 28;

fig. 30 is a side view of the jet regulator shown therein with a flange-like cross-sectional enlargement disposed over the discharge opening, the cross-sectional enlargement encircling on the outer periphery of the jet regulator housing;

FIG. 31 is a longitudinal cross-section of the jet regulator of FIG. 30; and

fig. 32 is a detail longitudinal section in the region of the cross-sectional enlargement of the flange-like ring diffraction flow regulator housing, in the threaded connection provided between the external thread on the jet regulator housing on the one hand and the internal thread in the drain opening on the other hand.

Detailed Description

In fig. 1 to 32,

different embodiments

101, 104, 111, 115, 127 and 130 of the jet regulator are shown. Only the jet regulator housing is shown for the jet regulator 101, while the

jet regulators

104, 111, 115, 127 and 130 are shown in fig. 6, 13, 22, 25, 28 and 31 in longitudinal section, which illustrates by way of example all the essential components of such a jet regulator.

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 be screwed in each case into the internal thread 3 in the outlet opening 4 of the sanitary outlet fitting in order to form the water discharged there into a uniform, non-splashing and, if appropriate, also ball-soft water jet. In order to seal the annular region 5 remaining between the housing outer circumference of the jet regulator housing 1 and the inner circumference of the drain opening 4 against uncontrolled draining of leakage water, the

jet regulators

101, 104, 111 and 115 have, as the external thread 2, a thread profile which at least partially differs from a thread cut which is helically continuous around the cylindrical wall. In the at least locally differently designed thread profile, the external thread 2 interacts with an internal thread 3 provided in the outlet opening 4 in a self-tapping or preferably self-adapting manner, so that the threaded connection is particularly well sealed in this region. In addition or as an alternative (as in this case), at least one

cross-sectional enlargement

6 or 7 is provided in the

jet regulators

127 and 130, which is formed in one piece on the jet regulator housing and is of the same material as the housing section of the jet regulator housing with the external thread 2 and can be applied sealingly on the end side and/or the inner circumferential side to the water outlet opening 4. Based on this particular design feature of the jet regulator shown here, if the jet regulator (as here) is designed without an additional elastic sealing ring for axially or radially sealing the jet regulator housing 1, uncontrolled drainage of leakage water due to the annular region 5 provided between the housing outer circumference of the jet regulator housing 1 and the inner circumference in the drain opening 4 is still effectively avoided under almost all operating conditions. In the

jet regulators

101, 104, 111, 115, 127 and 130, the above-mentioned annular region is still reliably sealed in the event that the internal thread 3 in the drain opening cannot be produced with high precision and the annular shoulder in the drain opening 4 required for axial sealing should be dispensed with for low production outlay in the production of the drain fitting.

As is evident from the longitudinal sections in fig. 6, 13, 22, 25, 28 and 31, the housing end face edge region of the jet regulator housing 1, which is arranged on the outflow side of the external thread 2, is bent in the direction of the inner periphery of the drain opening 4, so that a drain annular space 8 is formed between this housing end face edge region and the inner periphery of the drain opening 4.

Jet regulators

101, 104, 111, 115, 127 and 130 are each designed here as a jet aerator, which mixes the water flowing through it with the ambient air. The

jet regulators

101, 104, 111, 115, 127 and 130 embodied as jet ventilators have at least one air vent 9 which is arranged on the outflow side of the external thread 2 and is embodied so as to be open toward the housing end on the outflow 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 that can be detachably connected to one another, wherein the first housing part 10 arranged on the outflow side carries the external thread 2. The first housing part 10 on the outlet side is detachably connected on the inlet side to a second housing part 11 of the jet regulator housing 1, which second housing part 11 carries 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 designed here as a perforated plate 30 which has a plurality of splitter openings 31 and is formed in one piece into the second housing part 11. The splitter openings 31 in the perforated plate oriented transversely to the flow direction form a cross-sectional constriction which preferably tapers in the flow direction and in which the incoming water is accelerated. By this speed increase, a negative pressure is generated on the outflow side of the perforated plate 30, by means of which ambient air can be sucked into the housing interior of the jet regulator housing 1. In order to mix this ambient air strongly with the water flowing through the interior of the housing, at least one

insert part

32, 33 is provided at the outflow side of the perforated plate at a distance from the perforated plate 30, said

insert parts

32, 33 each having a grid or mesh structure formed by webs which cross one another at crossing nodes. In this grid or lattice structure of the

insert parts

32, 33, the inflowing water is additionally also divided in such a way that it can be mixed well with the sucked-in ambient air, which is then combined subsequently on the outlet side of the jet regulator 111 in the flow straightener into a uniform, non-splashing and ball-soft outlet jet.

In contrast, the

jet splitters

101, 104, 115, 127 and 130 are embodied as diffusers having pot-shaped jet splitter inserts 12 which have a plurality of splitter openings 13 on their pot-shaped pot circumference and which have a pot base 14 which is embodied as a deflecting surface which deflects the inflowing water in the direction of the splitter openings 13.

The second housing part 11 encloses a jet splitter insert 12 of the jet splitter. The second housing part 11 is tapered in its inner housing cross section in such a way that an annular gap 15 is formed between the jet splitter insert 12 and the inner circumferential edge of the second housing part 11, which annular gap tapers on the outflow side to an annular opening 16 into the housing interior.

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

As can be seen well in the longitudinal section according to fig. 6, 13, 22, 25, 28 and 31, the housing partial region or housing end face edge region of the jet regulator housing 1 which is arranged on the outflow side of the external thread 2 is bent in the direction of the inner periphery of the water outlet opening 4, so that a discharge annular space 8 is formed between this housing end wall region and the inner periphery of the water outlet opening 4. In order to be able to keep the leakage water penetrating through the annular region 5 between the outer housing periphery of the jet regulator housing 1 and the inner periphery of the water outlet opening 4 well in the discharge annular space 8, the housing end face edge on the outflow side of the jet regulator housing 1 is designed as a lip seal 21 which can be placed against the inner periphery of the water outlet opening 4, but here only close to the inner periphery of the water outlet opening 4. The annular gap is additionally sealed by capillary forces in this region and by rapid calcification in the annular gap between the housing end face edge formed as lip seal 21 and the inner circumferential edge in drain opening 4.

As can be seen in the longitudinal section according to fig. 6, 13, 22, 25, 28 and 31, at least one discharge opening 22 is provided in the subregion of the housing wall of the jet regulator housing 1 which is arranged between the housing end face edge on the outflow side and the external thread 2, said discharge opening leading from the discharge annular space 8 to the vent channel 18. The air sucked in through the ventilation channel 18 can thus carry along and guide the leakage water discharged from the discharge annular space 8 through the discharge opening 22 into the housing inner space, where it mixes with the water flowing there through.

A lattice or lattice structure 23 of webs which cross one another at crossing nodes is integrally formed on the outflow side on the guide wall 17. The flow openings 24 of the lattice or lattice structure 23, which are formed between adjacent webs and have here a honeycomb-like hexagonal inner bore cross section, have a longitudinal dimension which is preferably larger than the bore cross section, but at least has a longitudinal dimension which is sufficient to collect the water which is mixed in the interior of the housing into a uniform water jet. The guide wall 17 is connected to the jet regulator housing 1 and in particular to the first housing part 10 on the outlet side in a rotationally fixed and preferably integral manner. At least one tool engagement surface for a rotary tool is provided on the guide wall 17. At least one slot-like recess 29 is provided for this purpose in the grid or lattice structure 23 in order to insert a coin or other rotary tool used as a rotary tool. The gap 29 is delimited by opposing slit longitudinal walls. The slot longitudinal walls of the indentation 29 form a tool active surface for the rotary tool.

In order to design the external thread 2 with a thread profile that differs from a thread cut that runs helically around the cylindrical wall, in the jet regulator shown in fig. 1 to 3 the outer envelope circle of the external thread on the jet regulator housing for screwing with the internal thread 3 formed into the cylindrical drain opening 4 is conically enlarged towards the outlet side. In fig. 2, the external thread 2, which is conically formed toward the outlet side, is shown in the state in which 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 is also inserted with play into the internal thread 3, while the next thread pitch, in contrast, already projects deeper into the thread cutout of the internal thread 3 by the taper of the external thread starting there. The last thread pitch of the external thread 2 on the outflow side closes the associated thread cut of the internal thread 3 almost completely, so that leakage water can no longer penetrate through the threaded connection.

A further difference in 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-like profile 28 is formed on the external thread 2 provided on the outer circumference of the housing, said profile extending substantially in the longitudinal direction of the cut into one of the thread cuts of the external thread. The cam-shaped profile 28 projects beyond the envelope circle of the envelope external thread 2. When the external thread 2 is screwed into the internal thread 3, the cam profile 28 seals in the groove base of the adjacent internal thread 3, on the side of this internal thread 3 and on the tip of the thread profile if the cam profile 28 has cut deeply into the internal thread 2.

A further difference in the thread profile forming the external thread 2 is achieved in the jet regulator 111 shown in fig. 11 to 14. Also provided in the jet regulator 111 on the housing outer periphery of the jet regulator housing 1 is at least one profile which functions as a liquid barrier and which projects into at least one thread cutout of the external thread 2. Here, however, the at least one profile is designed as a separating wall 26 which extends over at least two thread cutouts of the external thread 2 and which extends with an approximately axial line parallel to the housing longitudinal axis of the jet regulator housing 1. Since this shaped part embodied as a separating wall 26 projects far beyond the envelope circle of the enveloping external thread 2, it at the same time also forms a cross-sectional enlargement which projects beyond the adjoining region of the jet regulator housing 1, is formed integrally on and of the same material as the housing section of the jet regulator housing 1 with the external thread 2, and bears sealingly against the water outlet opening 4 on the inner circumferential side and prevents leakage water from penetrating through the threaded connection.

In the jet regulator 115 also shown in fig. 15 to 26, the external thread 2 is formed as a thread profile which differs at least partially from a thread cut which is helically continuous around the cylindrical wall. For this purpose, the thread profile of the external thread projecting beyond the thread cut preferably expands at least partially in the thread section on the outflow side and forms in this way a sealing wedge 27, which is further illustrated in fig. 15 to 18. Fig. 23a to 23c show: how the profile forming the thread form of the male thread 2, which profile is designed as a sealing wedge 27, cuts into the female thread 3 of the outlet fitting more and more when the male thread 2 is screwed in. In fig. 23a, the external thread 2 has not yet been screwed completely into the internal thread 3 and the profile formed as a sealing wedge 27 has not yet begun to cut into, whereas in fig. 23b it is shown how this profile gradually begins to cut into the internal thread 3 as the external thread 2 is screwed further in. In fig. 23c, the jet regulator is completely assembled and is designed such that the profile of the sealing wedge 27 is completely in engagement with the internal thread 3. The overlapping hatching in fig. 23c indicates the material extrusion of the profile provided here in the external thread 2 and/or the internal thread 3.

Shown with jet regulators 127 and 130: the jet regulator housing 1 can also have at least one cross-sectional enlargement 6 on its housing outer circumference, which is formed in one piece on the same material as the housing section of the jet regulator housing 1 with the external thread 2; 7, which can be applied sealingly on the end side and/or on the inner peripheral side to the drainage opening 4. These cross-sectional enlargements 6; 7 are formed in the

jet regulators

127 and 130 in the form of flanges and extend over the at least one outlet opening 22 in the housing circumference of the jet regulator housing 1. A flange-like cross-sectional enlargement 6 on the housing outer circumference of the jet regulator housing 1 of the

jet regulator

127, 130; 7 are arranged between the external thread 2 and at least one discharge opening 22. In the jet regulator 127 shown in fig. 27 to 29, the flange-like cross-section enlargement 6 is arranged directly above one of the outlet openings 22 on the inflow side, while the jet regulator 130 shown in fig. 30 to 32 has, in contrast, a flange-like cross-section enlargement 7 which is designed as an annular flange surrounding the jet regulator housing 1. A flange-like cross-sectional enlargement 6 on the

jet regulator

127, 130; here, 7 is also designed as a screw-in stop which delimits the screwing of the external thread 2 into the internal thread 3 in the outlet opening 4 of the drain fitting. Said cross-sectional enlargement can be applied sealingly on the side of the discharge end or, as here, on the inner periphery of the discharge opening.

The jet regulator shown here is characterized in that: a high tightness in the region of the annular region 5 between the housing outer circumference of the jet regulator housing 1 and the inner circumference in the drain opening 4 of the drain fitting, without the need for a separate sealing ring, in particular of a different material, for sealing. The

jet regulators

101, 104, 111, 115, 127 and 130 shown here are therefore formed without sealing rings and do not require sealing rings made of an elastic material separately from the jet regulator housing 1.

List of reference numerals:

1 jet regulator casing

2 external screw thread

3 internal screw thread

4 water outlet

5 annular zone

6 Flange-like cross-sectional enlargement

(on the jet regulator 127 according to FIGS. 27 to 29)

7 surrounding flange-like cross-sectional enlargement

(on jet regulator 130 according to FIGS. 30 to 32)

8 discharge annular space

9 Vent

10 first housing part on the outflow side

11 second housing part

12 jet splitter insert

13 resolver opening

14 can bottom

15 annular gap (in jet splitter)

16 (of the annular gap 15) annular opening

17 guide wall

18 vent passage

19 channel opening

20 mixing zone

21-lip type sealing device

22 discharge opening

23 grid or mesh structure

24 through-flow opening

26 separating wall

27 sealing wedge

28 cam-shaped forming part

29 gap

30-hole plate

31 resolver opening

32 insert part

33 insert part

101 jet regulator according to fig. 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 fig. 30 to 32

Claims

1. Jet regulator (101, 104, 111, 115, 127, 130) having a jet regulator housing (1), said jet regulator housing (1) having an external thread (2) on its housing outer circumference for screwing into an internal thread (3) in a drain opening (4) of a sanitary drain fitting, characterized in that,

the jet regulator housing (1) has, on its housing outer circumference, a thread profile as an external thread (2) which differs at least in some regions from a thread cut which is helically continuous around the cylindrical wall and which interacts in this region in a self-adapting manner with an internal thread (3) which is arranged in the water outlet opening (4), and/or has at least one cross-sectional enlargement (6, 7) which is made of the same material as the housing section of the jet regulator housing (1) which carries the external thread (2) and is formed integrally thereon and can be applied in a sealing manner on the water outlet opening (4) on the end side and/or on the inner circumferential side, and

the housing subregion of the jet regulator housing (1) which is arranged on the outflow side of the external thread (2) is bent in the direction of the inner periphery of the water outlet opening (4) in such a way that a discharge annular space (8) is formed between the housing subregion and the inner periphery of the water outlet opening.

2. 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 the water flowing through the jet aerator with ambient air and which for this purpose has at least one air opening (9) in a housing section of the jet regulator housing (1) which is arranged on the outflow side of the external thread (2), said air opening being arranged on a housing periphery or 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. Jet regulator according to claim 3, characterized in that the at least two housing parts (10, 11) are disengageably connectable to each other.

5. Jet regulator according to claim 3, characterized in that the first housing part (10) arranged on the outflow side carries the external thread (2).

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

7. Jet regulator according to claim 6, characterized in that the first housing part (10) on the outflow side is detachably connected on the inflow side to the second housing part (11) of the jet regulator housing (1).

8. Jet regulator according to claim 6, characterized in that the jet splitter is designed as a diffuser with a pot-shaped jet splitter insert (12), which jet splitter insert (12) has a plurality of splitter openings (13) on its pot periphery in the pot shape, and the jet splitter insert (12) has a pot bottom (14), which is designed to divert the inflowing water to the deflection surfaces of the splitter openings (13).

9. Jet regulator according to claim 8, characterized in that the second housing part (11) surrounds the jet splitter insert (12) and the second housing part (11) tapers conically 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) opening into the housing interior.

10. Jet regulator according to claim 1 or 2, characterized in that a sleeve-like guide wall (17) is provided in the jet regulator housing (1), and that at least one vent channel (18) is provided between the housing inner periphery of the jet regulator housing (1) and the guide wall (17), which vent channel (18) leads from at least one vent opening (9) provided on the housing outflow side into the housing interior.

11. Jet regulator according to claim 1 or 2, characterized in that the housing end face edge on the outflow side of the jet regulator housing (1) is designed as a lip seal (21), the lip seal (21) bearing against the inner periphery of the water outlet opening (4) or close to the inner periphery of the water outlet opening (4).

12. Jet regulator according to claim 10, characterized in that at least one discharge opening (22) is provided in a sub-region of the housing wall of the jet regulator housing (1) which is arranged between the housing end side on the outflow side and the external thread (2), which discharge opening leads from the discharge annular space (8) to the vent channel (18) or to at least one of the vent channels (18).

13. Jet regulator according to claim 10, characterized in that a grid or lattice structure (23) consisting of webs which cross each other at crossing nodes is formed in one piece on the outflow side to the guide wall (17).

14. Jet regulator according to claim 13, characterized in that the guide wall (17) is connected non-rotatably to the jet regulator housing (1) and that at least one tool action face for a rotating tool is provided on the guide wall (17) and/or on the lattice or lattice structure (23).

15. Jet regulator according to claim 14, characterized in that the guide wall (17) is connected in one piece with the jet regulator housing (1).

16. 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) is connected to the outflow-side first housing part (10) in a rotationally fixed manner, and at least one tool engagement surface for a rotary tool is provided on the guide wall (17) and/or on the lattice or lattice structure (23).

17. Jet regulator according to claim 16, characterized in that the guide wall (17) is connected in one piece with the jet regulator housing (1) and with the first housing part (10) on the outflow side.

18. Jet regulator according to one of claims 14 to 17, characterized in that at least one slot-like recess (29) is provided in the lattice or lattice structure (23) for the insertion of a rotary tool, which recess is delimited by opposing slot longitudinal walls which form a tool action surface for the rotary tool.

19. A jet regulator as claimed in claim 18, wherein the rotary tool is a coin.

20. Jet regulator according to claim 1 or 2, characterized in that the outer envelope circle of the external thread (2) on the jet regulator housing (1) for screwing with an internal thread formed into a cylindrical drain opening is enlarged towards the outflow side.

21. Jet regulator according to claim 20, characterized in that the outer envelope circle of the external thread (2) on the jet regulator housing (1) for screwing with an internal thread formed into a cylindrical drain opening conically widens towards the outflow side.

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

23. Jet regulator according to claim 22, characterized in that the at least one profile extends as far as an envelope circle enveloping the external thread (2) or projects at least partially beyond the envelope circle.

24. Jet regulator of claim 22, characterized in that the at least one profile is configured as a separating wall (26) extending over at least two adjacent thread cuts of the external thread.

25. Jet regulator of claim 24, characterized in that the at least one separating wall (26) extends substantially axially parallel to a housing longitudinal axis of the jet regulator housing (1).

26. Jet regulator according to claim 22, characterized in that the at least one profile is cam-shaped and that a cam-shaped profile (28) extends in the thread cut substantially in the longitudinal direction of the cut.

27. Jet regulator according to claim 1 or 2, characterized in that the thread profile of the external thread (2) protruding beyond the thread cut is at least partially enlarged.

28. Jet regulator according to claim 27, characterized in that the thread profile of the external thread (2) projecting beyond the thread cut is enlarged in the thread section (27) on the outflow side.

29. Jet regulator according to claim 1 or 2, characterized in that the at least one cross-sectional enlargement (6, 7) projects flange-like on the housing outer circumference of the jet regulator housing (1).

30. Jet regulator of claim 29, characterized in that the at least one cross-sectional enlargement (6, 7) in the form of a flange extends in the housing circumferential direction of the jet regulator housing over at least one discharge opening.

31. Jet regulator according to claim 12, characterized in that the at least one cross-sectional enlargement (6, 7) projects flange-like on the housing outer circumference of the jet regulator housing (1); the at least one cross-sectional enlargement (6, 7) in the form of a flange is arranged on the housing outer circumference of the jet regulator housing between the external thread and the at least one discharge opening (22).

32. Jet regulator according to claim 29, characterized in that the flange-like cross-section enlargement (7) is configured as an annular flange which surrounds the jet regulator housing (1).

33. Jet regulator according to claim 29, characterized in that the flange-like at least one cross-sectional enlargement (6, 7) is designed as a screwing-in stop which limits the screwing-in of the external thread (2) into the internal thread (3) in the drain opening (4) of the drain fitting.

34. 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 no sealing ring made of an elastic material separately from the jet regulator housing (1) is required.

35. Jet regulator according to claim 6 or 7, characterized in that the jet splitter is designed as a perforated plate (30) having splitter openings (31).

36. Jet regulator according to claim 35, characterized in that the resolver opening (31) is at least partially constricted in the flow direction.

37. Jet regulator according to claim 6 or 7, characterized in that at least one insert part (32, 33) is connected downstream of the jet splitter in the flow direction at a distance, the insert part (32, 33) having a grid or lattice structure of webs which cross one another at crossing nodes.

38. Jet regulator according to claim 37, characterized in that a sleeve-like guide wall (17) is provided in the jet regulator housing (1); the grid or lattice structure arranged in the at least one insert part (32, 33) and/or integrally formed on the guide wall (17) has through-flow openings (24) having a honeycomb-shaped and/or hexagonal inner opening cross section.

39. Jet regulator according to claim 37, characterized in that a sleeve-like guide wall (17) is provided in the jet regulator housing (1); the grid or lattice structure provided in the at least one insert part (32, 33) and/or integrally formed on the guide wall (17) is formed by at least two concentrically encircling webs, which are connected to a set of radial webs.

40. Jet regulator according to claim 37, characterized in that a sleeve-like guide wall (17) is provided in the jet regulator housing (1); a grid or lattice structure in the at least one insert part and/or integrally formed on the guide wall has a set of parallel-axis first webs which intersect a set of parallel-axis second webs arranged at an angle thereto.

41. A jet regulator as claimed in claim 40, wherein the first tabs intersect a set of parallel-axis second tabs disposed at right angles thereto.

42. Jet regulator according to claim 37, characterized in that a sleeve-like guide wall (17) is provided in the jet regulator housing (1); the grid or lattice structure in the insert part and/or integrally formed on the guide wall is formed by webs which intersect one another and are arranged at an angle to one another such that the grid or lattice structure is decoratively formed by through-flow openings which are shaped differently in their inner opening cross-section.