ES2880363T3 - Jet regulator - Google Patents

Abstract

Jet regulator (101, 104, 111, 115) with a jet regulator housing (1), (1) having on its outer periphery of the housing an external thread (2) for screwing into an internal thread (3 ) in the water outlet (4) of a sanitary outlet faucet, characterized in that the casing of the jet regulator (1) has on its outer periphery of the casing a threaded profile that deviates, at least in sections, from a continuous helical surrounding threaded recess around a cylindrical wall, as an external thread (2), which collaborates in this area with a self-adjusting effect with the internal thread (3) provided in the water outlet (4).

Description

DESCRIPTION

Jet regulator

The invention relates to a jet regulator with a jet regulator housing, which has on its outer periphery of the housing an external thread for screwing into an internal thread at the water outlet of a sanitary outlet fitting.

Jet regulators have already been created in the most different embodiments to form the stream of water, which comes out from the water outlet of a sanitary outlet fitting, into a homogeneous jet of water without splashing. The jet regulators are mounted for this purpose in a sanitary outlet tap in the area of the water outlet.

A jet regulator according to the preamble of current patent claim 1 is already known from document EP 3153633 A1, which has an external thread on the outer periphery of its jet regulator housing, with which the jet regulator housing on an internal thread in the water outlet of a sanitary outlet faucet. In order not to have to seal the previously known jet regulator in the area of the annular gap, arranged between the casing of the jet regulator and the inner periphery of the water outlet, by means of at least one separate sealing ring made of elastic material, The external thread is provided, in the previously known jet regulator, directly below at least one ventilation hole, which passes through the peripheral wall of the jet regulator housing, through which ventilation hole, in addition to the ambient air, also the leakage water inside the housing, which could pass the annular gap through the threaded connection between the external thread and the internal thread. As soon as water flows through the previously known jet regulator and in this way a negative pressure is formed in at least one of its ventilation openings, the previously known jet regulator can carry with it a partial quantity of the leakage water, which passes the threaded union, to the interior of the casing. However, since the ventilation holes extend in any case only over a partial periphery of the jet regulator housing, there is a danger that the remaining leakage water will pass the annular gap that remains between the outer periphery of the regulator housing. of the jet and the inner periphery at the water outlet of the sanitary outlet fitting and exits with a disturbing effect at the front end of the outlet side of the water stream.

Therefore, in particular, there is the task of creating a jet regulator of the type mentioned at the beginning, which is characterized by a markedly improved tightness in the area between the outer periphery of the jet regulator housing and the inner periphery at the outlet of the jet. water from the sanitary outlet faucet.

A solution to this task according to the invention consists in the jet regulator of the type mentioned at the beginning in which the casing of the jet regulator has a thread profile on its outer periphery of the casing, which differs, at least in sections, from a threaded groove extending in a continuous helical manner around a cylindrical wall, as an external thread, cooperating in this area with automatic adjustment with the internal thread provided in the water outlet.

The jet regulator according to the invention has a jet regulator housing, which has an external thread on its outer periphery of the housing. Using the external thread, provided on the outer periphery of the housing, the jet regulator according to the invention can be screwed onto an internal thread at the water outlet of a sanitary tap to form the water that flows there into a water jet. homogeneous, spatter-free and, if necessary, also pearly soft. In order to seal off the annular area remaining between the outer periphery of the casing of the jet regulator and the inner periphery of the water outlet against an uncontrolled outlet of leakage water, it is provided according to the aforementioned proposal of the invention, that the casing of the jet regulator has a threaded profile as an external thread, which differs, at least in sections, from a threaded groove that extends in a continuous helical fashion around a cylindrical wall. In this threaded profile configured at least in different sections, the external thread cooperates automatically with the internal thread provided at the water outlet, in such a way that the threaded connection seals particularly well in this area.

A development according to the invention mentioned above provides that a front edge region of the jet regulator housing, arranged on the flow outlet side of the external thread, is angled in the direction of the inner periphery of the water outlet, in such a way that such that an annular drainage space is formed between this front edge region of the housing and the inner periphery of the water outlet. The leakage water, which flows over the threaded connection through the annular area between the outer periphery of the housing and the inner periphery of the water outlet to the front peripheral edge area of the outlet side of the housing of the jet regulator, thus accumulates in an annular drainage space, which is formed between the front peripheral marginal zone of the flow outlet side and the inner periphery of the water outlet.

With the aid of its special design features, the jet regulator according to the invention is insensitive to calcification also in the area of its jet regulator housing. A preferred embodiment according to the invention therefore provides that the jet regulator is configured as jet fan, which mixes the water circulating through it with ambient air and, for this purpose, has an orifice in a section of the jet regulator housing, arranged on the flow outlet side of the external thread Ventilation system provided on the periphery of the housing on the front side of the jet regulator housing.

In order for the jet regulator to be able to form the water flowing through its jet regulator housing well, jet-forming structures are necessary inside the housing. In order to be able to insert such jet-forming structures in a simple way into the jet regulator housing, it is advantageous if the jet regulator housing has at least two casing parts that can be interconnected, and that a first part of the jet regulator housing arranged on the outlet side of the current carries the external thread. In this case, at least two neighboring housing parts of the jet regulator housing can then be inseparably but preferably detachably connected to each other.

The water circulating through the casing of the jet regulator can be formed particularly effectively when the first part of the casing on the outlet side of the stream can be connected on the intake side with a second part of the casing of the jet. preferably detachable jet regulator, the second housing part of which carries a jet disintegrator, which breaks up the water stream into a plurality of individual jets.

In this case, a preferred embodiment according to the invention provides that the jet disintegrator is configured as a diffuser, which has a bowl-shaped jet disintegrator insert, which has a plurality of disintegration holes on the periphery of its bowl shape, and having a bowl bottom, which is configured as a rebound surface that deflects the attack stream of water towards the disintegration orifices.

In order to divide the water flowing into the jet regulator housing first into individual jets and subsequently to accelerate the individual jets in such a way that a negative pressure is formed on the outlet side of the diffuser stream, it is advantageous if the second part of the housing surrounds the jet disintegrator insert and that the second part of the housing tapers conically at least in the area of the cylinder bores, such that between the jet disintegrator insert and the inner periphery of the In the second part of the housing, an annular gap is formed, which tapers on the current outlet side towards an annular hole that opens into the interior of the housing.

A preferred development according to the invention provides that a sleeve-shaped guide wall is provided in the jet regulator housing and that at least one guide channel is provided between the inner periphery of the jet regulator housing and the guide wall. ventilation, which leads from at least one ventilation opening arranged on the outlet side of the casing into the interior of the casing. In this developed configuration, the jet regulator according to the invention has an outer surface formed by the outer periphery of the housing and an inner surface formed by the guide wall. Since in this way the at least one ventilation channel and the at least one ventilation opening are arranged on the inner surface of the jet regulator configured as a jet fan, accelerated calcification is counteracted in the annular zone between the outer periphery of the jet regulator housing and the inner periphery into the water outlet effectively.

In this case, a particularly advantageous embodiment, because it is particularly hermetic, according to the invention provides that the front edge of the housing of the jet regulator on the outlet side of the flow is designed as a sealing lip, which abuts on the periphery interior of the water outlet or approaches the inner periphery of the water outlet. The front edge of the housing on the flow outlet side and configured as a sealing lip can be seated against the inner periphery of the water outlet. However, it is also possible that this front edge of the housing approaches the inner periphery of the water outlet in such a way that the leakage water accumulated in the annular drainage space is held there by virtue of capillary forces, or else by that an annular gap remaining between the sealing lip, on the one hand, and the inner periphery of the water outlet, on the other hand, is hermetically sealed by a possibly desirable calcification in this area because it is functionally harmless.

In order to continuously empty the drainage annular space during operation of the jet regulator according to the invention, it is advantageous that, in the partial area, arranged between the front wall of the housing on the outlet side of the flow and the external thread, the wall of the casing of the jet regulator is provided with at least one drainage hole, which leads from the annular drainage space to the ventilation channel or to at least one of the ventilation channels. In this way, the ambient air drawn in through the ventilation channel inside the casing of the jet fan can draw, out of the drainage holes, leakage water that mixes inside the casing with the draft. air circulating through the jet regulator housing.

The correct operation of the jet regulator according to the invention is ensured against tampering if a lattice or network structure of knot-intersecting ribs is formed in one piece on the guide wall on the flow outlet side. crossing. In this way, this grid or network structure on the outlet side of the stream, which can also serve as a flow equalizer, can be joined to form a homogeneous jet of water - and the rear structures inside the housing do not press against the direction of flow from the water up.

In order to be able to screw the jet regulator according to the invention in a simple way into the water outlet of a sanitary tap fitting, it is advantageous if the guide wall is connected to the casing of the jet regulator and especially to the first part of the casing. on the outlet side of the current in a fixed manner against rotation and in particular in one piece and that at least one cutting surface of the tool for a rotating tool is provided on the guide wall and / or on the grid or mesh structure .

In this case, an embodiment that is particularly easy to manufacture and convenient to handle according to the invention provides that at least one slot-shaped recess is provided in the grid or net structure for the insertion of a coin used as a rotating tool or another. rotary tool, which is bounded by opposite longitudinal groove walls, which form tool leading surfaces for the rotary tool.

An embodiment of simple construction and good sealing according to the invention, in which the external thread forms a threaded profile that deviates, at least in sections, from a threaded groove that extends in a continuous helical fashion around a cylindrical wall, as a thread external, provides that the external surrounding circle of the external thread, intended to be screwed in with the internal thread formed in the cylindrical water outlet, widens, preferably conically, in the casing of the jet regulator towards the outlet side of the jet. current. In this embodiment, the external thread engages its conically widening threaded section deep into the surrounding threaded groove of the internal thread provided at the water outlet, in such a way that this annular area is effectively sealed between the external thread. on the outer periphery of the housing, on the one hand, and the internal thread at the water outlet, on the other hand, against leakage water seepage.

In any case, leakage water seepage onto the threaded connection between the internal thread and the external thread is foreseeable. In order to secure the thread passages of this threaded connection against leaking water, it is expedient that at the outer periphery of the casing of the jet regulator there is provided at least one shape that serves as a liquid screen, which projects into the air. minus one threaded recess of the external thread.

In order for the conformation, which serves as a liquid screen, to be able to fit deeply into the threaded recess of the internal thread provided in the water outlet, it is desirable that the at least one conformation extends to the surrounding circle that surrounds the external thread or is projected, at least in sections, on this enveloping circle.

A particularly effective sealing is promoted when the at least one shaping is configured as a partition wall extending over at least two neighboring threaded recesses of the external thread.

In this case, a comfortable to handle, easy to manufacture and effective watertight embodiment according to the invention, in which the partition wall represents a deflection in the external thread, formed by a helical continuous threaded groove extending around a cylindrical wall , provides that the at least one partition wall extends at least axially parallel to the longitudinal axis of the casing of the jet regulator.

The deflection provided according to the invention in the external thread can additionally or alternatively also alternatively be configured as at least one cam-shaped configuration, wherein the cam-shaped configuration extends into the threaded recess approximately in the direction of the longitudinal direction of the notch.

However, it is also possible that the threaded profile of the external thread, which projects onto the threaded recess, widens, at least in sections and preferably in a threaded section on the outlet side of the current, so that the external thread This threaded section, which widens on the outlet side of the current, can impinge deeply on the internal thread with a sealing effect.

Since the annular area, which lies between the outer periphery of the jet regulator housing and the inner periphery of the water outlet, is tightly sealed in the jet regulator according to the invention, a preferred embodiment according to the invention provides that the jet regulator is configured free of a sealing ring and does not require a sealing ring made of elastic material, separate from the casing of the jet regulator.

In the exemplary embodiment already described above, the jet disintegrator is configured as a diffuser. In certain applications, an exemplary embodiment configured, however different, provides that the jet regulator is configured as a perforated plate, which has disintegration holes. In order that a corresponding negative pressure is produced on the outlet side of the jet disintegrator configured as a perforated plate, it is advantageous if the disintegrator openings are narrowed, at least in sections, in the direction of flow.

In order to form the individual jets coming from the jet disintegrator and, if necessary, subsequently mixed with ambient air again into a homogeneous jet, which exits without splashing from the jet regulator, it is advantageous that after the jet disintegrator In the direction of remote movement, at least one insert is connected, which insert has a lattice or network structure of ribs which intersect at intersecting nodes.

Advantageous developments according to the invention provide that the grid or network structure (s) provided in at least one insert and / or integrally formed part (s) in the guide wall have (are) flow holes, having a honeycomb and / or hexagonal cell-shaped inner cross section.

An exemplary embodiment configured, on the other hand, in another way provides that the grid or network structure (s) provided in at least one insert and / or formed in one piece in the guide wall is (are) formed of at least two concentric surrounding ribs, which are connected with a set of radial ribs.

If a grid or mesh structure is to be configured in at least one of the inserts and / or in the guide wall in the housing of the jet regulator, which has diamond-shaped or rectangular flow openings, it is advantageous that the grid or network structure (s) formed in one piece on the at least one insert and / or on the guide wall have (have) a set of first parallel axial ribs, which they intersect with a set of second parallel axial ribs, arranged at an angle and preferably at a right angle.

Another proposal according to the invention provides that the grid or network structure (s) formed in one piece in the insert and / or in the guide wall is (are) formed by intersecting ribs, which are arranged at an angle to each other in such a way that this grid or net structure (s) is / are ornamentally formed by flow holes formed irregularly in their inside cross-sectional diameter of the hole.

Developments according to the invention are deduced from the claims in connection with the drawing, as well as the description. The invention is described in more detail below with the aid of preferred embodiments.

FIG. 1 shows the jet regulator housing represented in perspective of a jet regulator, which has an external thread in its jet regulator housing, with which the jet regulator can be screwed onto an internal thread at the outlet of the jet. water from a sanitary outlet tap, where the front edge area of the housing arranged on the flow outlet side of the external thread is angled outward in such a way that between this front edge area of the housing and the inner periphery an annular drainage space is formed from the water outlet not shown here.

Figure 2 shows the housing of the jet regulator screwed into an internal thread at the water outlet of Figure 1 in a detailed longitudinal section in the area of the external thread.

Figure 3 shows the casing of the jet regulator of Figures 1 and 2 in a top plan view on its front surface of the casing on the outlet side of the stream.

FIG. 4 shows the housing of a further jet regulator in a perspective view, in which an external thread is provided on the outer periphery of the jet regulator housing, which has at least one projecting shape in a threaded recess. cam shape.

Figure 5 shows the outer thread of the jet regulator housing shown in Figure 4 in a detailed perspective view of the cam-shaped conformation.

Figure 6 shows the jet regulator, equipped with the jet regulator housing of figures 4 and 5, which is screwed with its external thread into an internal thread at the water outlet of a sanitary outlet tap, where the jet regulator is shown in a longitudinal section through section VI-VI in figure 6a and wherein figure 6a shows the jet regulator in a top plan view on a stream intake side.

Figure 7 shows the threaded connection provided between the jet regulator of Figure 6 and the water outlet in a detailed longitudinal section in the area of the cam-shaped shaping.

Figure 8 shows the jet regulator of figure 6 with the jet regulator housing already shown in figures 4-7.

Figure 9 shows the jet regulator of Figures 6 and 8 in a top plan view on the front surface of the casing on the outlet side of the stream.

Figure 10 shows the longitudinal section of the external thread in four angular positions in the jet regulator housing shown in Figures 6, 8 and 9, where the angular positions used for the longitudinal section are shown in Figures 8 and 9 and they are numbered.

Figure 11 shows the housing of another jet regulator, where at least one partition wall can be seen, projecting onto the external thread provided on the outer periphery of the housing and configured as a liquid screen.

Figure 12 shows the external thread, provided on the outer periphery of the casing of the jet regulator shown in Figure 11 in a detailed perspective view in the area of the partition wall that serves as a liquid screen.

Figure 13 shows the jet regulator configured using the jet regulator housing shown in figure 11, which is screwed here also into the water outlet of a sanitary outlet tap, in a longitudinal section through the plane of section XIII XIII according to figure 13a, where figure 13a shows the jet regulator in a top plan view on the current intake side.

Figure 14 shows the external thread, which cooperates with the internal thread at the water outlet of the jet regulator shown in Figure 13 in the area of the partition wall shown in detail in Figures 11 and 12 in a longitudinal section of detail.

FIG. 15 shows another jet regulator, the external thread of which provided on the outer periphery of the housing has a threaded profile in a partial area of the flow outlet side which deviates, in sections, from a threaded recess extending from continuous helical shape around a cylindrical wall, where this deviation can be cut into the threaded profile in the internal thread at the water outlet in a hermetic way.

Figure 16 shows the external thread of the jet regulator shown in Figure 15 in a detailed perspective view in the area of the deflection in the external thread.

Figure 17 shows the jet regulator of Figures 15 and 16 in a perspective side view.

Figure 18 shows the jet regulator already shown in Figures 15 to 17 in a detailed perspective view in the area of the threaded profile, configured differently on the current outlet side of the external thread.

Figure 19 shows the jet regulator of Figures 15 to 18 in a bottom perspective view.

Figure 20 shows the jet regulator of Figures 15 to 19 in a top plan view on the front surface of the jet regulator housing on the stream outlet side.

Figure 21 shows the external thread cut longitudinally in four different angular positions, where the angular positions shown are numbered and represented in detail in Figures 19 and 20.

Figure 22 shows the jet regulator shown in Figures 15 to 21 in a longitudinal section at the water outlet of a sanitary outlet tap.

Figures 23a to 23c show the jet regulator from figure 15 to figure 22 shown in detailed views in the area of its threaded connection, where figure 23a shows the jet regulator screwed into the water outlet in a not yet definitive in the area of its external thread that collaborates with the internal thread in the water outlet, and figure 23b shows the threaded connection that collaborates between the external thread and the internal thread in the water outlet, where the deviation of the thread, provided in the extreme zone of the external thread on the outlet side of the current, begins to cut in the internal thread and where in figure 23c the threaded connection between the external thread in the casing of the jet regulator and the internal thread on the water outlet is shown in the screwed end position.

Figure 24 shows the jet regulator housing shown in Figures 15 to 22 in a detailed longitudinal section in the area of the annular drainage space.

Figure 25 shows the jet regulator screwed into the water outlet of a sanitary outlet tap of Figures 15 to 22 in a longitudinal section through the section plane XXV-XXV according to Figure 26, and

FIG. 26 shows the jet regulator of FIGS. 15 to 22 and 25 in a top plan view on the stream intake side of this jet regulator and the upstream screen provided there on the stream intake side.

Figures 1 to 26 illustrate different embodiments 10, 104, 111 and 115 of a choro regulator. Although only the jet regulator housing is shown of the jet regulator 101, the jet regulators 104, 111 and 115 are shown in figures 6, 13, 22 and 25 in longitudinal sections, exemplarily showing all essential components. of such a jet regulator.

The jet regulators 101, 104, 111 and 115 have a jet regulator housing 1, which has an external thread 2 on its outer periphery of the housing. The external thread 2 provided on the outer periphery of the housing can be screwed in. the jet regulators 101, 104, 111 and 115, respectively, in an internal thread 3 in the water outlet 4 of a sanitary outlet tap, to form the water that comes out there in a homogeneous jet of water, without splashing and, possibly also soft pearl. To seal the annular area 5 that remains between the outer periphery of the casing of the jet regulator 1 and the inner periphery of the water outlet 4 against an uncontrolled outflow of leakage water, the jet regulators 101, 104, 111 and 115 They have a threaded profile as external thread 2, which deviates, at least in sections, from a threaded recess which extends in a continuous helical fashion around a cylindrical wall. In this threaded profile, configured differently at least in sections, the external thread 2 collaborates, with its own cut or better with its own adjustment, with the internal thread 3 provided in the water outlet 4, in such a way that this threaded connection seals especially good in this area. Additionally or alternatively, in the jet regulators, at least one widening of the cross section can be provided, which is formed of the same material and integrally with the casing section of the jet regulator, which carries the external thread 2 , and which can be supported with a sealing effect on the water outlet 4 on the front side and / or on the inner peripheral side. By virtue of these special characteristics of the configuration of the jet regulators shown here, an uncontrolled leakage of leakage water through the annular zone 5, provided between the outer periphery of the jet regulator housing 1 and the inner periphery, is prevented. at the water outlet 4 effectively under all operating conditions even when the jet regulators are configured - as here - without additional elastic sealing rings for axial or radial sealing of the jet regulator housing 1. On the regulators of the jet 101, 104, 111 and 115, the aforementioned annular zone is reliably tight, even when the internal thread 3 is not manufactured with high precision at the water outlet, and when the annular appendage necessary for axial sealing in the water outlet 4 in favor of a lower manufacturing cost, in the manufacture of the outlet fitting.

As is clear from the longitudinal sections in FIGS. 6, 13, 22 and 25, a front edge region of the casing of the jet regulator 1, arranged on the outlet side of the external thread 2, is angled in the direction of the inner periphery of the water outlet 4 in such a way that an annular drainage space 8 is formed between this front edge region of the housing and the inner periphery of the water outlet 4.

The jet regulators 101, 104, 111 and 115 are configured here, respectively, as a jet fan, which mixes the water flowing through the jet with ambient air. The jet regulators 101, 104, 111 and 115, configured as jet fans, have at least one ventilation opening 9, which is arranged on the flow outlet side of the external thread 2 and is configured open towards the front side of the housing of the jet. outlet side of the stream.

The housing 1 of the jet regulators 101, 104, 111, and 115 represented here has at least two housing parts 10, 11 that can be detachably connected to each other, the first housing part 10 of which is arranged on the side outlet outlet carries the external thread 2. This, the first part of the casing 10 arranged on the outlet side of the current, is detachably connected to a second part 11 of the casing of the jet regulator 1, the second part of which of the housing 11 carries a jet disintegrator, which breaks up the water stream into a plurality of individual jets.

The jet disintegrator of the jet regulator 111 shown in Figures 11 to 14 is here configured as perforated plate 30, which has a plurality of disintegration holes 31 and is formed in one piece in the second part of the housing 11. The holes of disintegration 31 found in the perforated plate oriented transversely to the direction of flow form cross-sectional narrowings, preferably narrowing in the direction of flow, in which the water intake stream undergoes a rise of speed. As a result of this increase in speed, a negative pressure is formed on the outlet side of the perforated plate 30, through which ambient air can be drawn into the housing of the jet regulator 1. For Intensively mixing this ambient air with the water circulating through the interior of the housing, at least one insert 32, 33 is provided at a distance from the perforated plate 30 on its current outlet side, the insert pieces of which have , respectively, a grid or network structure of ribs that intersect each other at crossing nodes. In the grid or network structure of these inserts 32, 33 the water intake stream is divided still further in such a way that it can mix well with the sucked ambient air, before it is subsequently grouped on the side. outlet front of the jet regulator 111 into a flow equalizer in a homogeneous outlet jet, without spatter and pearly soft.

Instead, the jet disintegrator of the jet regulator 101, 104 and 115 is configured as a diffuser, which has a bowl-shaped jet disintegrator insert 12, which has on the periphery of the bowl its bowl is shaped by a plurality of disintegration holes 13, and having a bowl bottom 14, which is configured as a rebound surface, which deflects the intake stream of water towards the disintegration holes 13.

The second part of the housing 11 surrounds the jet disintegrator insert 12. In this case, the second casing part 11 tapers conically in its inner casing cross section, such that between the insert 12 of the jet disintegrator and the inner periphery of the casing of the second casing part 11 An annular gap 15 is formed, which tapers on the current outlet side towards an annular hole 16 which opens into the interior of the housing.

Provided in the housing of the jet regulator 1 is a guide wall 17 in the form of a sleeve, between which and the inner periphery of the housing of the jet regulator 1 there is provided at least one ventilation channel 18. This ventilation channel 18 leads from the at least one ventilation opening 9, arranged on the outlet side of the casing, into the interior of the casing. Since the water divided in the jet disintegrator into individual jets experiences an increase in velocity in the annular gap 15, it occurs according to the Benouilli equation on the outflow side of the annular gap 15 in the region of the annular hole 16 a negative pressure, which draws ambient air from the outside through the ventilation channel 18 to the partial zone, which serves as the mixing zone 20, of the interior space of the housing. There the stream of water mixes with the ambient air drawn in.

As can be clearly seen from the longitudinal sections according to FIGS. 6, 13, 22 and 25, the area of the housing part or front edge area of the jet regulator housing 1, arranged on the flow outlet side of the outer thread 2 is bent in the direction of the inner periphery of the water outlet 4, in such a way that the annular space is formed between this area of the front wall of the housing and the inner periphery of the water outlet 4 drain 8. In order to keep the leakage water 5, which seeps between the outer periphery of the jet regulator housing 1 and the inner periphery of the water outlet 4, either in the drainage annular space 8, the wall The front side of the water outlet side of the jet regulator housing 1 is designed as a sealing lip 21. which could bear on the inner periphery of the water outlet 4 - but here only approximates the inner periphery of the water outlet water 4. Through From the capillary forces in this area and through rapid calcification in the annular gap between the front edge of the housing configured as sealing lip 21 and the inner periphery at the water outlet 4, this annular gap is still additionally sealed.

As can be seen from the longitudinal sections according to FIGS. 6, 13, 22 and 25, in the partial region of the wall of the jet regulator housing 1, arranged between the front edge of the housing and the external thread 2, there is at least one drainage hole 22 is provided, which leads from the drainage annular space 8 towards the ventilation channel 18. The air drawn in through the ventilation channel 18 can thus carry the leakage water that exits from the annular space drain 8 over the drain holes 22 and lead into the interior space of the housing, where it mixes with the water circulating there.

On the guide wall 17, a lattice or network structure 23 of ribs intersecting each other at crossing nodes is formed in one piece on the flow outlet side. The through holes 24 formed between neighboring ribs of this grid or network structure 23, which here have an internal hexagonal cross-section in the form of honeycomb cells, preferably have a greater longitudinal extension compared to the cross-section of the bore, but at least a longitudinal extension sufficient to converge the mixed water inside the casing in a homogeneous water jet. The guide wall 17 is connected to the regulator housing 1 and in particular to the first housing part 10 on the current outlet side in a fixed against rotation and preferably in one piece. In this case, a tool leading surface for a rotating tool is provided on the guide wall 17.

For this purpose, at least one recess 29 in the form of a slot is provided in the grid or net structure 23 for the insertion of a coin used as a rotating tool or another rotating tool. This recess 29 is delimited by opposite longitudinal walls of the groove. These longitudinal walls of the recess groove 29 form tool leading surfaces for the rotary tool.

To configure the external thread 2 with a threaded profile that deviates from a threaded notch that extends in a continuous helical fashion around a cylindrical wall, in the jet regulator shown in Figures 1 to 3, the outer circle of the thread The outer thread intended for screwing with the inner thread 3 formed on the cylindrical water outlet 4 tapers conically in the jet regulator housing towards the outlet side of the stream. In figure 2 the external thread 2 is shown conically configured towards the outlet side of the stream in a position, in which the jet regulator 101 is screwed into the internal thread. By virtue of the taper of the external thread 2, the highest thread pitch on the current intake side still sits with play in the internal thread 3, whereas, on the other hand, the next coarse pitch is already projected through the initial taper there of the male thread deeper into the threaded rib of the female thread 3. The last The thread pitch of the current outlet side of the external thread 2 closes the associated threaded recess of the internal thread 3 almost completely, so that leakage water can no longer leak over this threaded connection.

A further deviation of the threaded profile that forms the external thread 2 is shown in the jet regulator 104 according to FIGS. 4 to 10. In this jet regulator, a shaping 28 is formed on the external thread 2 provided on the outer periphery of the housing. cam-shaped, extending in one of the threaded recesses of the external thread approximately in the longitudinal direction of the recess.

This cam-shaped conformation 28 protrudes over the encircling circle of the outer thread 2. During the connection of the outer thread 2 to the inner thread 3, the cam-shaped conformation 28 seals at the bottom of the groove of the inner thread. 3 neighboring, on the flanks of this internal thread 3 and at the tip of the threaded profile, when the cam-shaped conformation 28 has penetrated deeply into the internal thread 2.

Another deviation in the threaded profile that forms the external thread 2 occurs in the jet regulator 111 shown in FIGS. 11 to 14. Also in this jet regulator 111, there is provided on the outer periphery of the casing of the jet regulator 1 at least one conformation that serves as a liquid screen. projecting into at least one threaded recess of the external thread 2. However, this at least one conformation is configured here as a partition wall 26, which extends over at least two threaded recesses of the external thread 2, and which extends approximately axially parallel to the longitudinal axis of the casing of the jet regulator 1. Since this configuration, configured as a partition wall 26, protrudes greatly above the circumferential circle of the external thread 2, this configuration also represents a widening of the cross-section, protruding over the adjacent areas of the jet regulator housing 1, which is formed of the same material and in one piece with the jet regulator housing section 1, which carries the external thread 2, and which is It supports the water outlet 4 on the inner peripheral side with a sealing effect and prevents leakage of water onto the threaded connection.

Also in the jet regulator 115 shown in Figures 15 to 26, the external thread 2 is configured as a threaded profile, which deviates, at least in sections, from a surrounding threaded groove in a continuous helical fashion around a cylindrical wall. To this end, the threaded profile of the external thread, which protrudes over the threaded recess, preferably widens, at least in sections, in a threaded section on the outlet side of the current and thus forms a sealing wedge 27 , which is represented in detail in Figures 15 to 18. Figures 23a to 23c show how the conformation configured as a sealing wedge 27 is cut from the threaded profile that forms the external thread 2 during the screwing of the external thread 2 each again on the internal thread 3 of the outlet fitting. While in figure 23a the external thread 2 is not yet fully screwed into the internal thread 3 and the shape configured as a sealing wedge 27 is not yet impinged, figure 23b shows how this shape begins to penetrate during the subsequent screwing of the external thread 2 increasingly in the internal thread 3. In figure 23c, the jet regulator is fully assembled and the shape configured as a sealing wedge is fully engaged with the internal thread 3. The superimposed scoring in figure 23c indicates that in this case the material of the conformation provided in the external thread 2 and / or the internal thread 3 is displaced.

The housing of the jet regulator 1 can also have at least one widening of the cross-section on its outer housing periphery, which is made of the same material and integrally with the section of the housing of the jet regulator 1, which carries the outer thread 2, and which can be seated against the water outlet 4 on the front side and / or on the inner peripheral side. These cross-sectional flares may be of flange-type configuration and extend in the peripheral direction of the jet regulator housing 1 over at least one of the drain holes 22.

The cross-section flange-type flares on the outer periphery of the jet regulator housing 1 are provided between the outer thread 2 and the at least one drain hole 22. The cross-section flange-type flares may be designed also as a thread stop, which limits the screwing of the external thread 2 into the internal thread 3 at the water outlet 4 of the outlet fitting. The cross-sectional flares can be supported on the front outlet side or - as here - on the inner periphery of the water outlet with sealing effect.

The jet regulators shown here are characterized by high tightness in the region of the annular zone 5, which is located between the outer periphery of the jet regulator housing 1 and the inner periphery at the water outlet 4 of the water tap. outlet, without the need for separate sealing rings, especially of different material, for the seal. The jet regulators 101, 104, 111 and 115 represented here are therefore designed without a sealing ring and do not require a sealing ring made of elastic material, separate from the housing of the jet regulator 1.

List of reference signs

1 Jet regulator housing

2 Male thread

3 Internal thread

4 Water outlet

5 Ring zone

8 Drain annulus

9 Ventilation hole

10 First part of the housing on the current outlet side 11 Second part of the housing

12 Jet blaster insert

13 Disintegration Holes

14 Bowl bottom

15 Annular gap (in jet blaster)

16 Annular hole (of annular gap 15)

17 Guide wall

18 Ventilation channel

19 Channel hole

20 Mixing zone

21 Sealing lip

22 Drain hole

23 Grid or net structure

24 Flow ports

26 Partition wall

27 Sealing wedge

28 Cam-shaped conformation

29 Cut-out

30 Perforated plate

31 Disintegration Holes

32 Insert piece

33 Insert piece

101 Jet regulator according to figures 1 to 3

104 Jet regulator according to figures 4 to 10

111 Jet regulator according to figures 11 to 14

115 Jet regulator according to figures 15 to 26.

Claims (29)

1. Jet regulator (101, 104, 111, 115) with a jet regulator housing (1), (1) having on its outer periphery of the housing an external thread (2) for screwing into an internal thread (3) at the water outlet (4) of a sanitary outlet faucet, characterized in that the casing of the jet regulator (1) has on its outer periphery of the casing a threaded profile that deflects, at least in sections, of a continuous helical surrounding threaded groove around a cylindrical wall, as an external thread (2), which cooperates in this area with a self-adjusting effect with the internal thread (3) provided in the water outlet (4). Jet regulator according to Claim 1, characterized in that a part of the jet regulator housing (1), arranged on the flow outlet side of the external thread (2), is angled in the direction of the inner periphery of the water outlet (4), such that an annular drainage space (8) is formed between this area of the housing and the inner periphery of the water outlet. Jet regulator according to claim 1 or 2, characterized in that the jet regulator (101, 104, 111, 115) is configured as a jet fan, which mixes the water circulating through it with ambient air and which For this purpose, it has in a section of the casing of the jet regulator (1), arranged on the flow outlet side of the external thread (2), at least one ventilation hole (9) provided on the periphery of the housing or on the front side of the jet regulator housing (1). Jet regulator according to one of Claims 1 to 3, characterized in that the jet regulator housing (1) has at least two housing parts (10, 11) which can preferably be detachably connected to each other . Jet regulator according to claim 4, characterized in that a first housing part (10) arranged on the flow outlet side carries the external thread (2). Jet regulator according to claim 5, characterized in that the first housing part (10) on the flow outlet side of the jet regulator housing (1) can be connected to the intake side of the stream , preferably removably, with a second casing part (11) of the jet regulator casing, the second casing part (11) of which carries a jet disintegrator, which breaks up the stream of water into a plurality of individual jets. Jet regulator according to claim 6, characterized in that the jet disintegrator is configured as a diffuser, having a jet disintegrator insert (12) in the form of a bowl, which (12) has on the periphery of the bowl its bowl shape a plurality of disintegration holes (13), and which (12) has a bowl bottom (14), which is configured as a rebound surface that deflects the water intake stream towards the disintegration holes (13). Jet regulator according to claim 7, characterized in that the second housing part (11) surrounds the jet disintegrating insert (12) and in that the second housing part (11) tapers at least in the region of the cylindrical holes (13), in such a way that between the jet disintegrating insert (12) and the inner periphery of the second part of the casing (11) an annular gap (15) is formed, which (15) is narrow on the outlet side of the current towards an annular hole (16) which opens into the interior of the casing. Jet regulator according to one of Claims 1 to 8, characterized in that a sleeve-shaped guide wall (17) is provided on the jet regulator housing (1) and that it enters the inner periphery of the housing of the jet regulator (2) and the guide wall (17) there is provided at least one ventilation channel (18), which (18) leads from at least one ventilation hole (9), arranged on the side of outlet of the current from the housing, into the housing. Jet regulator according to Claim 9, characterized in that the front edge of the jet regulator housing (1) on the flow outlet side is designed as a sealing lip (21), which (21) abuts on the inner periphery of the water outlet (4) or is close to the inner periphery of the water outlet (4). Jet regulator according to claim 9 or 10, characterized in that in the partial area, arranged between the front side of the casing on the outlet side of the flow and the external thread (2), of the casing wall of the Jet regulator (1) a drainage hole (22) is provided, which leads from the annular drainage space (8) towards the ventilation channel (18) or towards at least one of the ventilation channels (18). Jet regulator according to one of Claims 9 to 11, characterized in that the guide wall (17), on the flow outlet side, is formed in one piece of a mesh or mesh structure (23 ) of ribs that cross each other at crossing knots. Jet regulator according to one of Claims 9 to 12, characterized in that the guide wall (17) is connected to the jet regulator housing (1) and in particular to the first housing part (10) on the side outlet outlet, in a fixed way against rotation and especially in one piece, and because at least one surface of tool attack for a rotary tool. Jet regulator according to claim 13, characterized in that at least one slot-shaped recess (29) is provided in the grid and mesh structure for inserting a coin used as a rotating tool or another rotating tool, which is bounded by opposite longitudinal walls of the groove, which form tool leading surfaces for the rotary tool. Jet regulator according to one of Claims 1 to 14, characterized in that the outer casing formed by the external thread (2), intended for screwing with the cylindrical internal thread, into the housing of the jet regulator (1) , it preferably flares conically towards the current outlet side. Jet regulator according to one of Claims 1 to 15, characterized in that a configuration (26, 28) is provided on the outer periphery of the jet regulator housing (1) which serves as a liquid screen, which projects in at least one threaded recess of the external thread (2). Jet regulator according to claim 16, characterized in that the at least one shape (26, 28) extends up to the casing of the external thread (2) or projects at least in sections over this casing. Jet regulator according to claims 16 to 17, characterized in that the at least one shape is configured as a partition wall (26), which extends over at least two neighboring rib grooves of the external thread. Jet regulator according to claim 18, characterized in that the at least one partition wall (26) extends approximately axially parallel to the longitudinal axis of the jet regulator housing (1). Jet regulator according to claim 16 to 17, characterized in that the at least one shaping (28) is cam-shaped and in that the cam-shaped shaping (28) extends into the threaded recess approximately in the longitudinal direction of the notch. Jet regulator according to one of Claims 1 to 20, characterized in that the threaded profile of the external thread (2), which projects onto the threaded recess, widens at least in sections and preferably in a threaded section ( 27) on the current outlet side. Jet regulator according to one of Claims 1 to 21, characterized in that the jet regulator (101, 104, 111, 115) is designed without a sealing ring and does not require a sealing ring made of elastic material, separate from the jet regulator housing (1). 23. Jet regulator according to one of claims 6 or 9 to 22, when dependent on claim 6, characterized in that the jet disintegrator is configured as perforated silver, having disintegration holes. 24. Jet regulator according to claim 23, characterized in that the disintegration orifices narrow, at least in sections, in the direction of flow. 25. Jet regulator according to one of claims 6 to 24, characterized in that downstream of the jet regulator, an insert (32, 33) is connected remotely in the direction of flow, whose insert ( 32, 33) has a grid or network structure of ribs that intersect each other at crossing nodes. 26. Jet regulator according to one of claims 12 to 25, characterized in that the grid or mesh structure (s) (23) provided in at least one insert (32, 33) and / or formed in one piece in the guide wall (17) has (n) through holes (24), which have an internal cross section of the hole in the form of honeycomb cells and / or in a hexagonal shape . 27. Jet regulator according to one of claims 12 to 25, characterized in that the grid or mesh structure (s) provided in at least one insert (32, 33) and / or formed One-piece guide wall (17) is (are) formed of at least two concentric surrounding ribs, which are connected with a set of radial ribs. 28. Jet regulator according to one of claims 12 to 25, characterized in that the grid or network structure (s) formed in at least one insert and / or formed in one The single piece in the guide wall has (are) a set of first parallel axial ribs, which intersect with a set of second parallel axial ribs arranged at an angle and preferably at a right angle. 29. Jet regulator according to one of claims 12 to 25, characterized in that the grid or mesh structure (s) formed on the insert and / or formed in one piece in the guide wall is (are) formed by ribs that intersect each other, which are arranged at an angle, in such a way that this (s) grid or net structure (s) is (are) formed ( s) ornamental (s) by flow holes formed irregular in their interior cross section of the hole.