WO1996003608A1

WO1996003608A1 - Embedded unit for an underwater lighting unit

Info

Publication number: WO1996003608A1
Application number: PCT/EP1995/002922
Authority: WO
Inventors: Johann Franz Wach
Original assignee: Johann Franz Wach
Priority date: 1994-07-27
Filing date: 1995-07-24
Publication date: 1996-02-08
Also published as: HU9600743D0; HU216384B; CZ289448B6; CZ89796A3; HUT73360A; EP0721554B1; ATE193763T1; EP0721554A1

Abstract

The invention concerns a substantially crucible-shaped floodable embedded unit (1) which can be set in concrete in the wall or bottom (9) of a water-filled pool to accommodate and secure an underwater lighting unit (6). A feed pipe (4) is integrally connected to the embedded unit (1); the opposite free end of the feed pipe projects into a dry or servicing chamber. The feed duct (4) can be used to supply water to flow through the embedded unit (1), or can house the cable (5) which carries the electrical power for the lighting unit (6). A sealing cable screw joint (26) is provided at the free end of the feed duct (4).

Description

INSTALLATION ELEMENT FOR UNDERWATER LIGHTING

DESCRIPTION

The invention relates to a built-in element for receiving and attaching an underwater spotlight for water-filled pools, as is specified in the preamble of claim 1. In particular, the underwater spotlight can be used in mineral water or brine baths.

Such built-in elements are usually already concreted in during the manufacture of the pool wall or the pool floor, that is to say with tiles even before the pool is lined. This already results in a disadvantage of the conventional built-in elements for underwater spotlights: it is almost impossible to concrete the built-in element so precisely into the pool wall or floor that the underwater spotlight looks appealing after being inserted into the built-in element inserts exactly symmetrically into the tile grid. However, this is not only visually unsatisfactory, but also entails a considerable additional workload, since generally more tiles have to be cut and adapted than would be the case with a symmetrical installation.

A far more serious disadvantage, however, arises in the case of the conventional built-in elements from the fact that they have to be flooded with water from the pool for the purpose of cooling the powerful underwater spotlight, which develops considerable heat during its operation. The water that has once penetrated into the installation element there is almost no exchange with the rest of the pool water. All corrosion-prone elements on the installation element and underwater spotlight therefore show considerable corrosion damage within a very short time. This problem becomes all the more evident in brine baths.

Another cause of conventional installation elements is the cause of this corrosion problem. The cable for the power supply of the underwater spotlight is usually led through an empty conduit, which is pre-cast into the wall or the floor of the basin as far as the installation element. There it enters the installation element through a sealing cable gland and is finally connected to the underwater spotlight. This cable gland is of course also subject to the corrosive effect of the water or the brine in the interior of the flooded installation element. In particular, rubber sealing rings used for the actual sealing lose their sealing effect over time due to aging and embrittlement processes. If the installation element is flooded with brine, these processes are of course accelerated considerably. Since on the one hand escaping water, which runs along the current-carrying cable to a power source or a distribution box, would cause very considerable damage there, but on the other hand, over time with a failure of the sealing cable gland, which is also completely inaccessible in the

If the pool wall or the floor is concreted in, must be taken into account, when using the conventional built-in elements when concreting the cable-carrying conduit, it must be ensured that it runs at least at one point above the water level of the pool. In this way, the water seeping into the cable-guiding pipe can never reach the pipe end opposite the installation element. The fact that safety can only be guaranteed by this method in the most cumbersome and expensive manner is particularly evident in the example of floor spotlights, the empty conduit of which leads not only in the bottom of the pool, but also over the entire height of the pool wall and above the water level . As already mentioned above, with conventional installation elements there is practically no exchange of the water or brine inside. As a result, the cooling effect of the water or brine on headlights and power cables is very limited. In addition, a certain supply of cables must always be rolled up inside the built-in element so that the underwater spotlight can be removed from the built-in element for repair purposes and can be transported with the cable connected to at least above the water surface of the pool. This cable supply means an additional heat source inside the built-in element. Because only low voltage may be used in swimming pools, ie the cables must have a relatively large cross-section, which in turn is associated with high heat radiation. Due to the limited cooling effect of the water "standing" in the conventional built-in element, such a built-in element can therefore only be used at a water depth of maximum 3 m, since a maximum of 3 m of cable can be stored in the built-in element and cooled sufficiently without it damage due to excessive heat.

Because of this limited supply of cables, the known installation elements are also not easy to maintain. This manifests itself even more clearly in the concreted, completely inaccessible cable seal. If their sealing function fails, which - as explained above - can be expected sooner or later, it could only be replaced using methods that are disproportionate to the result. The concrete wall including the tile structure would have to be broken up. However, as is known, a lack of ease of maintenance is often the reason why the theoretically possible maximum service life is not achieved.

Finally, the last point is the high level of microbial contamination which occurs in the water-flooded interior of the conventional built-in elements. Although of course pure water is otherwise introduced into the pool, the water once inside the installation element is experienced virtually no exchange through the extremely narrow through and flooding openings of the built-in element that are open to the pool. The underwater spotlights, which act as herds of germs, have a negative impact on the overall water hygiene of the pool.

The present invention seeks to remedy these disadvantages.

Based on the prior art described above, the invention has the task of extending the life of a built-in element for underwater spotlights by the fact that the seal - especially in the cable duct - that

Cooling and corrosion resistance are improved, and maintenance is simplified. In addition, the built-in element according to the invention should make it possible for the underwater spotlight not to impair the water quality of the pool and to always fit into the tile grid of the pool in a visually appealing and symmetrical manner.

This object is achieved by a built-in element for underwater spotlights according to the teaching of claim 1. Further configurations of the built-in element are the subject of the subclaims.

The object is achieved in particular in that pure water can flow through the installation element. For this purpose, it is not, as is generally customary, only a conduit that conducts cables through the wall or the bottom of the basin to the installation element, but a supply conduit that conducts both water and water is integrally connected to the installation element according to the invention. At this integral connection point there are therefore no sealing problems as in the usual routing of the cable by means of a cemented cable screw connection which is concreted in and adjoins the installation element. The dual function of the supply pipe according to the invention - pure water supply and cable routing - ensures that the power cable is cooled over the entire length of the pipe. With the end opposite the installation element, the feed pipe opens into a drying or maintenance room. This is where the Pure water feed into the feed pipe and the sealing of the cable emerging from the feed pipe. This means that the seal, in contrast to the concrete version of the prior art, is always accessible and visible and can be replaced immediately when signs of aging and fatigue occur. There is therefore no need for costly and labor-intensive redundant safety precautions such as laying the supply pipe in at least one section above the level of the water level. On the contrary, this would even be contradictory in the case of the present invention, since the entire feed pipe is said to be flooded with pure water which is fed in.

However, it is not only for reasons of cooling that a flow of pure water through the built-in element has considerable advantages. Due to the constant water exchange inside the built-in element, there can be no environment that promotes germ growth. The water hygiene of the entire pool is noticeably improved.

At the pipe end of the supply pipe opposite the installation element, it is e.g. on, in or on top of

To cut a pipe thread sealing a pipe end, over which a threaded plug can also be mounted. The sealing plug can also be pushed into or onto the feed pipe and glued to it. This sealing plug must of course have an axial bore for the passage of the cable. This hole widens to form a shoulder in the direction of the cable outlet in the drying or maintenance room to a coaxial hole of larger diameter, which receives a sealing cable gland. In this case, a sealing element, for example a rubber sealing ring, is pressed by a pressure screw with an external thread and an axial bore, the internal diameter of which corresponds approximately to the cable diameter, against the shoulder at the foot of the bore of larger diameter. The external thread of the pressure screw interacts with an internal thread provided in the larger diameter bore. Downstream of the stopper is a pipe with for the introduction of pure water Pure water connection welded to the supply pipe by pipe welding.

The cable and water connection at the end of the supply pipe can be more easily installed by using a T-piece. With one arm of the T-piece, the feed pipe itself is screwed or even integrally glued via a pipe thread. With the second arm of the T-piece, the above-described sealing plug with cable entry is screwed or glued and inserted into the third arm of the Finally, the T-piece opens the pipe through which pure water is fed into the feed pipe. This transition is of course also sealed by a pipe screw connection or by gluing.

Due to the excellent cooling properties of the flow-through built-in element, it is also possible to keep a larger amount of cables in stock. Therefore, the underwater spotlight, after it has been removed from the installation element, can not only be transported straight over the water surface or at best to the pool edge with the cable connected, but also easily at a distance, e.g. serviced in an off-road service vehicle. For the same reason, the installation of the underwater spotlight in a water depth of more than 3 m with the installation element according to the invention does not pose any problem.

As far as the exact fitting of the underwater spotlight into the symmetry of the tile grid is concerned, the installation element according to the invention is initially concreted into the wall or floor of the basin, more or less exactly positioned. However, the position of the underwater spotlight in the built-in element, in turn, is not predetermined from the outset, as in conventional models of the prior art (through prefabricated threaded bores for fastening the underwater spotlight in the built-in element). In the case of the built-in element according to the invention, it is rather also possible to use the underwater spotlight to a certain extent To fix the installation tolerance in the installation element and thus compensate for any inaccurate positioning of the installation element in the concrete wall or floor. In this way, the underwater spotlight can always be optimally fitted symmetrically into the tile grid of the pool, so that both a visually appealing appearance is created and the adaptation and cutting work on the tiles can be minimized. This is achieved according to the invention by a base which can be fastened to the inner bottom of the built-in element and on which the underwater spotlight is mounted either directly or via a known rotating bracket. In order to ensure an installation tolerance in the plane of the pool wall or floor, this base must of course first be displaceable in a plane parallel to this plane on the floor of the installation element. For this purpose, it has a groove into which a bolt which is firmly anchored in the center of the base of the installation element projects. The base can consequently be displaced along this bolt by guiding the groove on the bottom of the built-in element. It is particularly advantageous to make this groove T-shaped in section and to use a threaded bolt, since in this way, in addition to being displaceable, the base can also be fixed in a certain position. As soon as the installation element and thus the base is in its optimal position, the base can be fastened by screwing a nut onto the threaded bolt and then tightening it against the shoulder of the T-shaped groove. The same naturally also applies to the use of a screw which is seated, for example, in a threaded hole formed in the center of the base plate. In order to ensure the practical feasibility of this fastening, however, the base must be constructed in two parts. Because the T-shaped groove in the first component of the base is partially covered in the fully assembled state by the second component of the base, so that free access to it is only possible if the second component of the base is removable. Once the first component of the base is fixed in its optimally determined position on the floor of the installation element, the second component can be fastened in the first and second component by means of screw holes already prefabricated and centered on the first component by screwing. On this second component of the base, a U-profile-like rotating bracket or a receptacle directly belonging to the underwater spotlight can in turn be fastened by means of a prefabricated threaded hole centered on the second installation element by means of a screw connection. An installation tolerance perpendicular to the wall or floor level of the basin can be exhausted by interposing disks of various thicknesses. Finally, the underwater spotlight is mounted in the rotating bracket or the receptacle in a conventional and known manner.

The height of the housing body of the installation element must also be adjustable in order to achieve a vertical installation tolerance. Starting from the base plate, it essentially consists of a jacketed, cylindrical or prismatic tube section, an annular base flange, an annular press flange and a further tube section. While the dimensions of the first three components are specified, the length of the closing pipe section, on the free end of which the underwater spotlight with a radially molded flange finally comes to rest, is always dimensioned to achieve the maximum installation tolerance, so that the required section is shortened by shortening the pipe section Length can be obtained.

The hermetic sealing of the flooded built-in element against the concrete wall or floor of the basin is achieved in that all components of the built-in element both with one another and with the sealing film guided between the concrete wall or floor and the tile structure of the basin by gluing to form an integral sandwich composite are connected. These connections between the individual components or the sealing film are to be explained in more detail below. First of all, the coated tubular section of the housing body directly adjoining the base plate of the built-in element is fitted with its front edge areas into complementary annular groove profiles in the axially inner surface of the base plate with a snug fit and is hermetically sealed. The radially outer circumferential surface of the sheathed tube section is flush with the surface and, in particular by gluing to form a sandwich, is enclosed by a tube collar, one end face of which is flush with the axially inner surface of the base flange and is also connected to it in a sandwich-like manner, in particular by gluing, during the latter the other end face is in flush contact with the axially inner surface of the base plate and is additionally integrally connected to it to form a sandwich-like composite.

In the area of this jacketed pipe section, the cable and pure water supply pipe opens into the housing body. The feed pipe is also sealingly connected to the wall of the housing body by gluing or welding. It penetrates an inlet bore in the covered pipe section and a coaxial and congruent inlet bore in the pipe sleeve in such a way that the feed pipe forms a firm sandwich composite with the covered pipe section and the pipe sleeve.

The sealing film of the basin to be placed between the base flange and the press flange and to be provided with a circular cutout with approximately the same radius as that of the installation element is already pressed between these two flanges in a compressive and sealing manner when the base flange and press flange are screwed together. It is particularly advantageous to make the circular cutout of the sealing film somewhat larger, so that it does not reach the radially inner edge of the annular base flange and the annular press flange at any point. The resulting annular disk-shaped space between the press and base flange can then be completely filled with an adhesive that extends to the inner surface of the two flanges. So are Base flange, press flange, and sealing film are integrally connected. This sealing connection can be made even more secure if a pipe socket is fitted into the housing body at the level of the base flange and press flange, since this fits through to the inner surfaces of the two shells

Adhesive escaping flanges forms an integral sandwich composite, at least with the base and press flange. Depending on the length of the pipe socket, an integral sandwich bond can also be achieved in this way between the covered pipe section, base flange, press flange, final pipe section and fitted pipe socket.

In this case, the fitted pipe socket is even connected with adhesive at two points. On the one hand, of course, with the adhesive emerging from the joint between the base flange and the press flange, and on the other hand, however, also with the adhesive emerging from the joint between the press flange and the final pipe section onto the inside of the casing body. At this second point, not only the press flange and the final pipe section are integrally connected by the adhesive, but also an additional annular sealing film cutout, which comes with its radially outer area to rest on the actual sealing film of the basin and with its radially inner area as far as between the press flange and final pipe section is sufficient, and is integrally glued there with these two components. This additional annular sealing film cutout is of course also bonded radially on the outside to the actual sealing film. In this way, it covers the heads of the screws, which are recessed into the axially outer side of the press flange, and with which the press flange is screwed onto the base flange with the sealing film interposed.

Not only to achieve an optimal adhesive connection, but above all due to the absolutely reliable corrosion resistance, all components (apart from the screw connections) of the built-in element are made of plastic, and in particular of PVC. An exemplary embodiment of the present invention will be explained in more detail below with reference to the figures. It shows

1 shows an axial section of the fully assembled built-in element;

2 shows a plan view of the fully assembled built-in element or of the underwater spotlight;

3 shows an axial longitudinal section of the feed pipe end projecting into the drying chamber;

Figure 4 is a perspective view of the base on which the underwater spotlight can be attached. and

Fig. 5 is an axial section and a plan view of this base.

1 shows a complete, already fully assembled installation element 1, in which the underwater spotlight 6 is mounted on a U-shaped rotary bracket 8. The cable which is led through the feed pipe 4 and, depending on the required length, is wound several times around the base 21 inside the built-in element and is finally connected to the underwater light 6 is not shown for reasons of clarity. For the same reasons, the adhesive 20 is shown blackened only in the left half of the drawing, and the pipe socket 18, which can optionally be fitted into the housing body 3, is shown.

As can clearly be seen, the housing body 3 is firmly anchored in a circular groove in the base plate 2 via the tube section 13 encased by a tube sleeve 14 and is integrally connected to the base plate 2 by gluing. The opposite end of the tube section 13 is also seated in a circular groove, which on the

Is formed inside the jacket of the annular base flange 15. Pipe section 13 and pipe sleeve 14 are pierced by a coaxial and congruent inlet bore through which the feed pipe 4 enters the interior of the installation element 1 flows. Supply pipe 4, pipe section 13 and pipe sleeve 14 also form an integral sandwich composite by gluing. Base flange 15 and press flange 16 are initially only connected via a detachable screw connection 19, so that when installing the installation element 1, the sealing film 11 arranged between the pool wall or floor 9 and the tile structure 10 is arranged between the axially outer end face of the base flange 15 and the axially inner end face of the Press flange 16 can be inserted. As a result of the screw connection 19 to be subsequently produced between the base flange 15 and the press flange 16, the sealing film is hermetically sealed. In order to additionally secure the absolute tightness, the circular cutout in the sealing film 11 can have a larger diameter than the inside diameter of the housing body 3, so that the sealing film 11 does not touch the inner surface of the base or press at any point flange 15, 16 is sufficient and rather an annular disk-shaped joint between base flange 15 and press flange 16 remains. This can be filled with an adhesive 20 which penetrates as far as the inside of the two flanges and thus connects them together with the sealing film 11 to form an integral sandwich composite. If the pipe socket 18, which can optionally be fitted into the housing body 3, is also provided, this is also included in the integral sandwich composite by the adhesive 20.

For the sealing covering of the heads of the screws 19, which are sunk into the axially outer end face of the press flange 16 and serve for connection to the base flange 15, an additional annular sealing film cutout 12 is provided. This comes to rest with its radially outer area on the sealing film 11 of the basin and with its radially inner area on the axially outer end face of the press flange 16. By gluing it is integrally connected radially on the outside with the sealing film 11 and radially on the inside with the press flange 16 and the subsequent pipe section 17. If the fitted pipe socket 18 is provided in a corresponding length, then it is also included in the radially inner connection by the adhesive bond. The pipe section 17, on its axial the outer end face of the underwater spotlight 6 with a radially outer flange 7 is already shortened to the length which is necessary to compensate for any irregularities in the installation depth of the base plate 12 in the wall or the floor 9 of the pool.

The underwater spotlight 6 itself is fastened in the installation element 1 in that it is glued on the one hand to the axially outer end face of the closing pipe section 17 and, on the other hand, is fastened to the rotary bracket 8 by a screw connection shown in broken lines. The rotary bracket 8 is in turn fastened centrally on the component 23 of the base 21 via a screw connection. In the same way, the component 23 is mounted on the component 22 of the base centered via a screw connection shown in dashed lines. The component 22 and with it the component 23, of course

The swivel bracket 8 and the underwater spotlight 6 can be turned around a screw 24 protruding from the center of the base plate 2 into the installation element 1 and moved into an eccentric position by guiding a T-shaped groove 29 formed radially in the component 22. In this desired

The entire ensemble can be fixed in position by means of a screw 24 protruding from the center of the base plate 2 through the T-shaped groove 29.

In Fig. 1, the installation element 1 according to the invention is shown in the fully installed state. During installation, ie when concreting the pool wall or floor, all the components projecting beyond the base flange 15, that is to say the press flange 16, underwater spotlights 6, and possibly also the pipe sockets 17, 18, have not yet been installed. Instead, a mounting plate made of recycled material is screwed to the center of the base flange 15. When concreting in, it serves as a mold core and, so to speak, "placeholder" for the components to be assembled later (see above). Therefore, the outline of the originally used mounting plate can still be clearly seen from the course of the concrete wall 9 sloping towards the base flange 15. The mounting plate preferably has a ventilation hole, which is helpful for checking the tightness of the installation element and the associated pure water-carrying pipe system. When filling the installation element and pipe system with water, the ventilation hole remains open for the purpose of ventilation. For subsequent pressing, it is then closed with a stopper.

After pressing, the mounting plate can be removed and the entire "structure" (see above) can be mounted over the base flange 15 or glued to the sealing foils 11, 12 of the basin.

2 shows the built-in element 1 or the underwater headlight 6 which is only visible from the front in the installed state. Through the narrow outlet openings 25, the pure water flowing into the installation element 1 via the feed pipe 4 emerges into the basin. The underwater spotlight 6 is fastened on the rotating bracket 8 by means of the two screws, the hexagonal heads of which are visible. Optimally symmetrical fitting of the headlamp into the tile grid is achieved through the adjustment options of the base 21.

Fig. 3 shows the end of the supply pipe 4 opening into the drying or maintenance room in longitudinal section. The end of the feed pipe 4 is glued into one arm of a T-shaped pipe connection piece 28 and connected to it in a sealing manner. A sealing plug, which receives the sealing screw connection 26, is glued into the opposite tubular arm. Finally, the end of a tube 27 is glued into the third tube arm of the T-shaped connecting piece 28, which tube arm is oriented at right angles to these two tube arms and through which pure water is fed into the feed tube 4. The

The direction of flow of the pure water is symbolized by arrows. All three pipe arms taper their input diameter to form a shoulder that serves as a stop for the pipe ends to be inserted and glued or for the sealing plug. The cable 5, coming from the feed pipe 4, first passes axially in the sealing plug trained bore. This hole widens to form a shoulder in the direction of the drying or maintenance room to a hole of larger diameter, which receives the sealing cable gland 26. This has a pressure screw with a central bore, the diameter of which corresponds approximately to the cable diameter, and through which the cable is led into the drying room. The pressure screw is screwed from the drying chamber via an internal thread cut into the larger diameter bore of the sealing plug against the shoulder serving as a stop at the transition of the two bore diameters in the sealing plug. A rubber sealing ring inserted between the heel and pressure screw is pressed around the cable in a sealing manner.

4 shows a perspective view of the base 21, the inventive design of which guarantees an installation tolerance for the underwater spotlight 6. Both components 22 and 23 are cylindrical in shape. A T-shaped groove 29 is formed in the component 22 radially from the center point. For manufacturing reasons, this groove is designed as a flat groove with a rectangular cross section and extends radially beyond the axis of the component 22 as a continuation of the T-shaped groove.

5 shows the base 21 again as an axial section and in a top view, the prefabricated bores for the later screw connections and the T-shape of the groove 29 being particularly clearly visible. The axially centered bore in the component 23 receives the screw for fastening the rotary bracket 8 during assembly. It is framed by two bores which, starting from the free end face of the component 23, taper in the interior of this component 23 to form a shoulder and extend with this tapered diameter into the component 22. The component 23 can be fastened on the component 22 by screwing over these two bores.

Claims

PATENT CLAIMS

1. Basically pot-like from a base plate and a housing body, in the wall or the bottom of a water-filled, in particular filled with brine or mineral water, concretable, floodable installation element for receiving and fastening an underwater spotlight which covers the installation element Completely and essentially flush with the wall or the bottom of the basin, with a cable extending to the power supply of the underwater spotlight into the built-in element, the implementation of which is sealed against water leakage from the flooded built-in element, characterized by a on his one end integrally connected to the installation element (1) and with its other free end projecting into a drying room supply pipe <4), through which both the cable (5) is guided and pure water can be introduced to flow through the installation element (1), the cable (5) through a in the dry room m freely accessible, sealing cable gland (26) is inserted into the supply pipe (4).

2. Installation element according to claim 1, characterized in that the cable (5) in the interior of the installation element (1) is available in such a length that the Unterwasserschein¬ projector (6) without manipulation of the sealing cable gland (26) from the Installation element (1) installed in the pool can be removed and, with the cable (5) connected, can also be stored over longer distances on the pool edge.

3. Installation element according to one of claims 1 or 2, characterized by a two-part base (21) inside the housing body (3), the first component (22) under leadership a groove (29) formed in the first component (22), into which a bolt fastened in the center of the base plate (2) of the built-in element (1) engages, is displaceable and rotatable about the bolt, while the second component (23 ) can be fastened centered on the first component (22) and is either connected via a rotating bracket (8) or directly to the underwater spotlight (6).

4. Installation element according to one of claims 1 to 3, characterized in that the housing body (3) from the base plate (2) starting essentially from a jacketed, cylindrical or prismatic tube section (13), an annular base flange (15), one annular press flange (16) and a further tube section (17), on the free end of which the underwater spotlight (6) finally comes to rest with a radially outer flange (7).

5. Installation element according to claim 4, characterized in that the coated tube section (13) of the housing body (3) with its front edge regions in complementary annular groove profiles in the axially inner surface of the base plate (2) is fitted with a snug fit and is hermetically sealed.

6. Installation element according to one of claims 4 or 5, characterized in that the coated tube section (13) of the housing body (3) is flush and in particular by gluing to a sandwich composite of a pipe sleeve (14) is enclosed, one end face flush on the axial The inner surface of the base flange (15) rests and is connected to it in a sandwich-like manner, in particular by gluing, while the other end face of the pipe sleeve (14) is in the same way flush with the axially inner surface of the base plate (2). is in flush contact and is additionally integrally connected to it, in particular to form a sandwich-like composite.

7. Installation element according to one of claims 1 to 6, characterized in that the feed pipe (4) which is sealingly connected to the wall of the housing body (3) by gluing or welding, an inlet bore in the coated tube section (13) of the housing body (3) and a coaxial and congruent inlet bore in the pipe collar (14) penetrates so that the feed pipe (4) together with the covered pipe section (13) of the housing body (3) and the pipe collar (14) forms a firm sandwich composite.

8. Installation element according to one of claims 4 to 7, characterized in that the press flange (16) on the base flange (15) via screw connections (19) can be fastened and thereby a between the concrete wall (9) or floor and tile structure (10) sealing foil (11) guided in the basin can be pressed and sealed between the base flange (15) and the press flange (16).

9. Installation element according to claim 8, characterized in that the sealing film (11) at no point extends to the radially inner edge of the annular base flange (15) and the annular press flange (16), and that the resulting annular disk-shaped space completely is filled with an adhesive (15) which extends to the inner surface of the two flanges (15, 16) so that the base flange (15) and the press flange (16) are integrally connected at their radially inner area.

10. Installation element according to claim 9, characterized in that in the housing body (3) a pipe socket (18) fits, which extends at least over the inner surface of the base (15) and press flange (16), and is at least connected to them by the adhesive (15) to form an integral sandwich composite.

11. Installation element according to one of claims 8 to 10, characterized in that an additional annular sealing film cutout (12) with its radially outer area on the actual sealing film (11) of the basin and with its radially inner area on the axially outer side of the Press flange (16) comes to rest, is glued to it in a sealing manner and thus covers the heads of the screws (19), which are recessed into the axially outer side of the press flange (16), and with which the press flange (16) with the intermediate layer of the sealing film (11) screwed onto the base flange (15).

12. Installation element according to one of claims 1 to 11, characterized g e k e n n z e i c h n e t that it consists of plastic, in particular PVC.