EP1898008B1 - Sanitary water tap - Google Patents

Abstract

A method for removeably fitting a flow control regulator (5) into a plumbing outlet (2) has a cartridge design fitted directly into the outlet and secured by a screw thread. The cartridge locates into the bottom of the outlet bore and has an inlet aperture matching the outlet aperture of the plumbing fitting. This eliminates trapped spaces where debris and impurities could collect. An alternate design has a press fit sleeve inserted into the plumbing outlet to form a grip into which the cartridge is fitted. The cartridge is fitted and removed using conventional tools.

Description

The invention relates to a sanitary outlet fitting with a liquid guide, which opens into a fitting outlet, in the area of which is designed as a Einsetzpatrone designed sanitary functional unit.

Various jet regulators have already been provided, which are provided as a sanitary functional unit in the area of the tap outlet of a sanitary outlet fitting and serve to produce a soft, non-spraying jet of water. The previously known jet regulators can be used regularly in a sleeve-shaped outlet mouthpiece which can be screwed on the end of the valve outlet.

However, the use of a sleeve-shaped outlet mouthpiece, which is to be screwed to the fitting outlet, but requires a complex processing of the outlet fitting and limits beyond the creative freedom in the development of such an outlet fitting. In addition, the outlet nozzle made as a separate and usually chromed metal sleeve is associated with additional, not inconsiderable costs.

Especially in high-quality fittings, which are also esthetically high demands, the fitting and the associated mouthpiece must be ground together with great effort, polished and then also chromed together or painted to smooth as possible transition between fitting and mouthpiece without color deviations and without to reach disturbing gaps and to ensure equal diameters. The usual when using conventional mouthpieces column between the fitting and the screwed onto the outlet end of the valve mouthpiece can not only disturb the visual appearance of such a valve, but also form a hygienic vulnerability by dirt accumulation.

In the CH-A 380 042 already described a sanitary outlet fitting according to the preamble of claim 1, which opens into a fitting spout into which from the outlet end face of a designed as Einsetzpatrone sanitary functional unit can be inserted. While in Figure 7 the CH-A 380 042 an embodiment is shown in which the insert cartridge is held by means of an intermediate holder, which in turn is releasably secured by means of a screw in the valve outlet, is shown in FIG CH-A 380 042 an embodiment shown in which the insert cartridge itself carries on the outer circumference of its cartridge housing an external thread which cooperates directly with an internal thread on the inner circumference of the valve outlet. In order to be able to remove the insert cartridge from the fitting outlet when required, a tool engagement surface accessible from the outlet end face is provided on the insertion cartridge or the intermediate holder.

This tool engagement surface is in the in Fig. 7 of CH-A 380 042 shown intermediate holder designed as a hexagon socket. However, formed in its clear outlet cross section as a hexagon intermediate holder affects the round outlet cross section of the exiting water jet. In addition, the non-circular outlet cross-section of the intermediate holder narrows the clear, circular outlet cross-section of the insert cartridge connected in the direction of flow. On the other hand, in the case of the insert cartridge shown in FIG. 9 and directly held in the valve outlet, an open-sided slot is provided, into which a key serving as a turning tool can be inserted. Since this slot requires a certain depth of penetration of the rotary tool serving as a key, a certain radial distance between the front edge side slotted cartridge housing and the inner circumference of the valve outlet necessary. An additional intermediate holder therefore appears neither possible nor provided in the exemplary embodiment shown in FIG.

From the DE-A 38 35 143 One knows already designed as a jet regulator cartridge insert, which is held by means of a retaining ring designed as an intermediate holder in the fitting outlet of a sanitary water outlet fitting. Since this intermediate holder protrudes far beyond the tap outlet even in the assembled state, the intermediate holder can be easily grasped at this, over the tap outlet protruding portion and released to remove the Einsetzpatrone. However, such a far above the tap outlet protruding intermediate holder affects the appearance of the sanitary outlet fitting.

There is therefore in particular the task of creating a sanitary outlet fitting that can be used without significant restriction of the design scope with a jet regulator or other sanitary function unit, with mounted by means of an intermediate holder in the tap spout sanitary function unit mounted easily and conveniently in the outlet fitting and from there should also dismantle again.

The achievement of this object is the features of claim 1.

The achievement of this object is in the sanitary outlet fitting of the type mentioned in particular that the liquid guide is adapted at least in the mouth region of the fittings spout in its clear cross section of the Einsetzpatrone, and that the Einsetzpatrone from the mouth side in the fittings spout can be used and kept detachable.

The designed as Einsetzpatrone functional unit can be used from the outlet side in the fitting outlet and kept detachable therein. To accommodate this insertion cartridge, the liquid management of the outlet fitting is adapted in its clear cross-section, at least in the mouth region of the fitting outlet to the Einsetzpatrone. On an associated with additional, not inconsiderable costs outlet nozzle can thus be dispensed with; Such mouthpieces were previously associated with a disproportionately high proportion of the total cost of an outlet fitting. Since the screwing of such an outlet mouthpiece is dispensable and since such an outlet mouthpiece for color matching also does not have to be processed together with the outlet fitting, the production of the sanitary outlet fitting is much easier. Since it is possible to dispense with a mouthpiece, the usual gap between mouthpiece and outlet fitting, which would otherwise have a visually disturbing effect and would prevent high hygienic requirements, is also avoided when using conventional mouthpieces. The sanitary function unit is detachably held in the fitting outlet of the sanitary outlet fitting and can thus be used for service work, such as e.g. To remove dirt or for descaling even by the untrained user can be easily solved and removed. By dispensing with an outlet mouthpiece and the creative scope in the development of an outlet fitting is increased, so that, for example, even colored outlet fittings are possible without that special mouthpieces would have to be produced in appropriate color with additional costs.

It is expedient if the insert cartridge with at least the predominant portion of its longitudinal extent, preferably completely with its entire longitudinal extent, is arranged in the fitting outlet. Is the insertion cartridge completely arranged with its entire longitudinal extent in the fitting spout, it can be concealed, ie be accommodated from the outside virtually invisible and tamper-proof in the fitting spout. From there, the insertion cartridge, for example, with the help of a crown or fork wrench or other removal tool when needed to solve again.

The insert cartridge can be held directly, without additional adapter in the fitting spout. Another embodiment according to the invention provides that the insert cartridge is held by means of a preferably sleeve-shaped intermediate holder in the fitting outlet.

In order to facilitate the installation of the cartridge in the fitting outlet and to determine there the position of the cartridge insert, it is useful if the insert cartridge or the intermediate holder can be used up to a Einsetzanschlag in the fittings spout.

It is advantageous if the intermediate holder relative to the inner peripheral wall of the fitting outlet is preferably circumferentially sealed. The sealing of the intermediate holder in the outlet fitting can be achieved by means of additional seals such as e.g. O-ring or gasket, by means of molded to the intermediate holder seals or by means of the connecting means, for example by the adhesive used in the bonding of the intermediate holder, take place.

It is expedient if the insertion cartridge is sealed against the intermediate holder or the inner peripheral wall of the fitting spout. Such a sealing of the functional unit with respect to the intermediate holder or the inner peripheral wall of the valve spout can be done for example via an O-ring, a gasket or other known seals.

In this case, a preferred embodiment according to the invention that for sealing between Einsetzpatrone or intermediate holder on the one hand and the outlet fitting on the other hand, at least one ring seal, preferably at least one O-ring is provided.

After a further development proposal according to the invention it is provided that the insert cartridge or the intermediate holder carries an external thread which is screwed into an internal thread in the fitting outlet, and that the external thread and the internal thread are sized and arranged such that the thread when screwing the Insertion cartridge or the intermediate holder grip each other in a relative position of outlet fitting on the one hand and insert cartridge or intermediate holder on the other hand, in which the outer peripheral side provided on the Einsetzpatrone or the intermediate holder O-ring or the like ring seal the outlet fitting is not frictionally touched. The arrangement of the ring seal which seals the cartridge radially in the valve body, a significant advantage can be used during assembly and disassembly: When mounting one has significantly more feeling for finding the thread, since the ring seal is then pressed radially, if the thread has already been found. By pressing the ring seal much friction is generated, which would otherwise make the feeling of mounting otherwise difficult. When disassembling the selected arrangement of the ring seal has the advantage that the insert cartridge with the help of the insertion and removal tool is unscrewed from the screw with the fitting outlet. As long as the ring seal is still in the compressed state, there is an axial forced movement through the thread. Only when the ring seal has left the valve seat in the axial direction, the thread comes out of engagement. This has the decisive advantage that one designed as a hidden mission cartridge and optionally with an intermediate holder mounted functional unit can completely remove by rotation of the valve and not because of friction must additionally pull axially or requires the support of water pressure.

It is also possible that at least one circumferential seal is integrally formed on the insert cartridge, wherein the insert cartridge in the sealing area can be configured not only as a multi-component injection molding, but in particular as a one-component injection molding.

Further features of the invention will become apparent from the following description of inventive embodiments in conjunction with the claims and the drawings. The individual features may be implemented individually or in combination in an embodiment according to the invention.

Fig. 1

eine sanitäre Auslaufarmatur, in deren Armaturen- Auslauf eine als Einsetzpatrone ausgestaltete sani- täre Funktionseinheit mittels eines Zwischenhalters lösbar einsetzbar ist,

Fig. 2

eine sanitäre Auslaufarmatur, bei der die als Ein- setzpatrone ausgestaltete sanitäre Funktionseinheit ohne einen Zwischenhalter in den Armaturen-Auslauf lösbar eingesetzt werden kann,

Fig. 3

eine sanitäre Auslaufarmatur, mit einer in den Ar- maturen-Auslauf einsetzbaren Einsetzpatrone, wobei zum Ein- und Ausschrauben der Einsetzpatrone aus dem Armaturen-Auslauf eine zum Austausch vorge- sehene baugleiche weitere Einsetzpatrone verwendbar ist, und

Fig. 4

eine sanitäre Auslaufarmatur, in deren Armaturen- Auslauf eine mit Figur 1 vergleichbare Einsetz- patrone mittels eines Zwischenhalters lösbar ein- setzbar ist, wobei an der Zuströmseite dieser Ein- setzpatrone zur Abdichtung zwischen Einsetzpatrone und Zwischenhalter einerseits und der Auslaufarma- tur andererseits eine umlaufend abdichtende Dich- tung einstückig angeformt ist.

It shows:

Fig. 1

a sanitary outlet fitting, in the fitting outlet of which a sanitary functional unit designed as an insertable cartridge can be detachably inserted by means of an intermediate holder,

Fig. 2

a sanitary outlet fitting in which the sanitary functional unit designed as a cartridge insert can be detachably inserted into the fitting spout without an intermediate holder,

Fig. 3

a sanitary outlet fitting, with an insertable cartridge insertable into the fitting, whereby a screwed-in cartridge can be screwed in and out of the fitting outlet for replacement. see identical other insertable cartridge is used, and

Fig. 4

a sanitary outlet fitting, in the dashboard spout with a FIG. 1 comparable insertable cartridge is releasably insertable by means of an intermediate holder, wherein on the inflow side of this insert cartridge for sealing between insert cartridge and intermediate holder on the one hand and the outlet armature on the other hand, a circumferentially sealing gasket is integrally formed.

In FIG. 1 is a sanitary outlet fitting 2 in the area of the fitting outlet 4 of their liquid guide 3 shown. In the area of the fitting outlet 4, a sanitary functional unit equipped as insert cartridge 5 is provided, which is held in the fitting outlet 4 via a sleeve-shaped intermediate holder 6. The insert cartridge 5 can be inserted from the inflow side of the intermediate holder 6 up to a holding shoulder 7 in the intermediate holder 6. The intermediate holder 6 has at its downstream peripheral edge region on an external thread 8, which external thread 8 in a complementary internal thread in the fitting outlet 4 can be screwed in such a way that the intermediate holder 6 and the insertion cartridge 5 located therein with its entire longitudinal extent completely arranged in the fittings outlet 4 are.

On the side facing away in the flow direction side of the external thread 8, an annular groove 10 held in a ring groove 11 is provided on the intermediate holder circumference, which seals in the radial direction between the intermediate holder 6 and the inner circumference of the outlet fitting 1. The insert cartridge 5 is formed here from a downstream jet regulator 12, which is preferably detachably connected on the inflow side with a flow rate regulator 13 and with an upstream front screen 14 is.

On the upstream side of the intermediate holder 6, a further attachment screen 15 is provided which can extend in the interior of the liquid guide 3 of the outlet fitting 2 over a comparatively large cross-section. The front screen 15 is releasably connected to the intermediate holder 6 and has at its peripheral edge on a circumferential latching projection 16 which engages in an annular groove on the inflow-side inner periphery of the intermediate holder 6. Between the front screen 15 and an inflow-side end face of the jet regulator 12 of the Einsetzpatrone 5 a sealing ring in the axial direction seal 17 is provided, wherein the jet regulator 12 is held with an annular flange 18 between the holding shoulder 7 and the attachment screen 15. In the intermediate holder 6 functional units of conventional design can be used, which can be configured for example as a jet regulator, flow rate regulator, backflow preventer and / or attachment screen.

In FIG. 2 a sanitary outlet fitting 1 is shown in the outlet end of a designed as an insert cartridge 5 sanitary functional unit can also be used without an intermediate holder. The insert cartridge 5 has a multi-part and here two-part designed cartridge housing 19 which carries an external thread 21 on a downstream housing part 20. The insert cartridge 5 is screwed to this external thread 21 with an internal thread, which is arranged on the inner periphery of the provided at the outlet end of the outlet fitting 1 liquid guide 3. Also on the housing part 20, a ring seal 11 is provided on the side facing away in the flow direction side of the external thread 21, which is located in an annular groove on the outer circumference of the cartridge housing 19.

Also the insert cartridge 5 in FIG. 4 is with its entire longitudinal extent substantially completely in the fittings spout 4 arranged. Also, the insert cartridge 5 has a downstream jet regulator 12, which has a jet splitter 22 and a subsequent Strahlreguliereinrichtung 23. The jet regulator 12 is connected on the inflow side to a flow rate regulator 13, which is preceded by a front screen 14.

Due to the multi-part design of the cartridge housing 19, the insert cartridge 5 in Fig. 2 designed like a box. While the housing part 20 allows the installation of the insert cartridge without intermediate holder 6 and without mouthpiece in an outlet fitting 1, alternatively, another, not shown, downstream housing part may be provided without external thread, which serves for installation of the insert cartridge 5, for example, in a conventional mouthpiece.

While the left halves of the in Fig. 1 and 2 shown longitudinal sections show the installation of Einsetzpatronen in a configured as a casting outlet fitting is in the right half of FIG. 3 and 4 shown that these cartridges can also be installed in a mouth side designed as a metal pipe outlet fitting.

In the FIGS. 1 and 2 is indicated that the intermediate holder 6 in FIG. 1 and the cartridge 5 in FIG. 2 have a contoured and formed from projections and depressions 24 outflow end face, said contouring is configured as a tool engagement surface, for example, for a complementarily shaped insertion tool. It may possibly serve as an insertion tool and a conventional coin piece.

In contrast, in FIG. 3 one with FIG. 2 comparable outlet fitting 1 shown, the cartridges are assigned 5, of which an insert cartridge 5 is in the outlet fitting 1, while a structurally identical other Einsetzpatrone 5 'is provided for replacement. Out FIG. 3 It can be seen that the outflow end face of each insert cartridge 5, 5 'has a contouring formed from the end edge projections and recesses 24, such that the recesses 24 of the held in the outlet fitting 1 insert cartridge 5 as a tool-engaging surface for the projections 25 for replacement certain and usable here as insertion tool other insert cartridge 5 'serve and vice versa. The projections 25 and the depressions 24 at the outflow end face of the insert cartridges 5, 5 'each form a crown-like lower edge, the jaws of which fit into the respective counterpart to be assembled or disassembled.

While in FIG. 3 In contrast, to replace the located in the outlet fitting 1 Einsetzpatrone 5 a complete insert cartridge 5 'is used, it is also possible to unscrew the cartridge located in the outlet fitting cartridge 5 or the intermediate holder 6 only another intermediate holder 6 or only another cartridge case otherwise not to use the supplied insert cartridge. For this purpose, the manufacturer of fittings only one additional intermediate holder or just another cartridge housing with the fitting mitermose, which are intended as an insertion tool. This has the advantage that the fitting manufacturer does not have to supply a second functional unit which can be mounted in the outlet fitting and the further intermediate holder or the further cartridge housing, which are manufactured and used in relatively large numbers, represents a very inexpensive auxiliary tool.

In FIG. 4 an outlet fitting 2 is shown in the means of an intermediate holder 6 a with FIG. 1 Comparable insert cartridge 5 can be used. While at the in FIG. 1 illustrated intermediate holder 6 is designed as an O-ring ring seal 11 is provided on the in FIG. 4 shown Insert cartridge 5 instead of the inflow side a seal 30 integrally formed. The integrally formed on the inflow-side end edge region of the cartridge housing seal 30 is designed as a sealing profile, which has a sealing lip 31 and a parallel outer circumferential insertion stop 32. The insertion stop 32 limits in the position of use of the insert cartridge 5 a deformation of the seal 30 and its sealing profile. In the position of use, the sealing profile with the sealing lip 31 and its insertion stop 32 cooperate with a circumferential on the inner circumference of the valve outlet ring shoulder 33, which limits the clear outlet cross-section of the outlet fitting 2. The cartridge case of the insert cartridge 5 with the integrally formed thereon seal 30 can be prepared as a one-component or multi-component injection molded part. For the simple recycling of the materials used for the insert cartridge and its intermediate holder, however, it is expedient if the cartridge housing and the molded-on seal 30 are made of the same, preferably food-safe material. As a result, the production costs can be simplified and the tool costs for a possibly required injection molding tool can be kept comparatively low.

As if from a comparison of FIGS. 1 and 4 becomes clear, is the in FIG. 4 shown insert cartridge 5 structurally much simpler to design, since the in FIG. 1 designed as an inflow-side snap ring additional attachment screen 15 and the ring seals 11 and 17 can be omitted, which is much easier assembly technology and manufacturing technology.

The sanitary functional units shown here are used in such a way in the outlet end of a sanitary outlet fitting 1, 2, that can be dispensed with a screw-on from the outside to the outlet end mouthpiece. As with the omitted outlet fittings on a mouthpiece can be dispensed with, also eliminates the otherwise remaining between the mouthpiece and outlet fitting gap that affects the appearance of such an outlet fitting and precludes contamination by dirt hygienic requirements. Since the Einsetzpatrone is located in the outlet fittings 1, 2 shown here with their entire lengthwise extension completely in the liquid guide the outlet fitting, the outlet fitting can be uniformly dyed or chromed without much effort, without at the same time a mouthpiece or other components in the same color or shape to edit. Since the entire clear cross-section of the liquid guide provided in the outlet fitting is available for the insert cartridge, large-area attachment screens can also be used, which significantly extend the service life between two maintenance intervals. Is the insert cartridge - as in FIG. 3 shown - designed on its downstream side in such a way that with her a structurally identical, but intended for replacement insert cartridge and can be screwed again, the insert cartridge also serves as a tool for assembly and disassembly.

Claims (8)

1. Sanitary outflow fitting (1, 2) having a liquid-carrying duct (3) that terminates in a fitting outlet (4), in the region of which is provided a sanitary functional unit constructed as an insertable cartridge (5), wherein the liquid-carrying duct (3) is adapted in its internal cross-section to fit the insertable cartridge (5), at least in the mouth region of the fitting outlet (4), while the insertable cartridge (5) can be inserted, from the mouth end, into the fitting outlet (4) and is releasably held therein in the fitting outlet (4) by means of a screw connection, characterised in that the insertable cartridge (5) is held directly with its cartridge housing or by means of a sleeve-shaped intermediate holder (6) by means of the screw connection, and in that the cartridge housing of the insertable cartridge (5) and/or the intermediate holder (6) have a contoured outflow end face which is constructed as a tool engagement surface for an insertion tool, and in that the outflow end face of the cartridge housing of each insertable cartridge and/or of each intermediate holder has a contouring formed from projections (25) and depressions (24) around the front edge, such that the depressions (24) of an insertable cartridge (5) held in the outflow fitting (1, 2) and/or of an intermediate holder (6) serve as a tool engagement surface for the projections (25) of another cartridge housing (5) that can be used as an insertion tool - or of another intermediate holder.
2. Outflow fitting according to claim 1, characterised in that the insertable cartridge (5) is arranged with at least the majority of its longitudinal extent, preferably with its entire longitudinal extent, in the fitting outlet (4).
3. Outflow fitting according to claim 1 or 2, characterised in that the insertable cartridge (5) or the intermediate holder (6) can be inserted in the fitting outlet (4) as far as an insertion stop.
4. Outflow fitting according to one of claims 1 to 3, characterised in that the intermediate holder (6) is preferably circumferentially sealed relative to the inner circumferential wall of the fitting outlet (4).
5. Outflow fitting according to one of claims 1 to 4, characterised in that the insertable cartridge (5) is sealed off relative to the intermediate holder (6) or the inner circumferential wall of the fitting outlet (4).
6. Outflow fitting according to one of claims 1 to 5, characterised in that in order to form a seal between the insertable cartridge (5) or intermediate holder (6) on the one hand and the outflow fitting (1, 2) on the other hand, at least one ring seal (11), preferably at least one O-ring, is provided.
7. Outflow fitting according to one of claims 1 to 6, characterised in that the insertable cartridge (5) or the intermediate holder (6) has an external thread that can be screwed into an internal thread in the fitting outlet (4), and in that the external thread and the internal thread are of such dimensions and are arranged such that when the insertable cartridge or the intermediate holder is screwed in the threads grip one another in a relative position of the outflow fitting (1) on the one hand and the insertable cartridge (5) or intermediate holder (6) on the other hand in which the O-ring or similar sealing ring (11) provided on the outer circumference of the insertable cartridge or of the intermediate holder does not make frictionally locking contact with the outflow fitting (1, 2).
8. Outflow fitting according to one of claims 1 to 7, characterised in that the insertable cartridge (5) has a multi-part cartridge housing (19) and in that the screw connection for securing the cartridge housing (19) in the fitting outlet (4) is provided on a housing part (20) of the cartridge housing (19) that is preferably arranged on the outflow side.

Images