WO2022171276A1

WO2022171276A1 - Wc bowl

Info

Publication number: WO2022171276A1
Application number: PCT/EP2021/053218
Authority: WO
Inventors: Jinzhou XU; Thomas Patrick KELLER
Original assignee: Plumtech Ag
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-18
Also published as: EP4259883A1; CN116867946A

Abstract

The present invention relates to a WC bowl (1) with a rim (2) closing the bowl opening and having a rear region, two side regions and one front region with a circumferential bearing surface (2), a supply for flushing water with a flushing opening (3) that opens into the interior space of the WC bowl and a discharge opening of a discharge pipe arranged in the base of the WC bowl. According to the invention, the flushing opening (3) is arranged in one of the side regions of the rim (2) in the inner side wall of the WC bowl (1) and is connected to the flushing water supply via a duct closed with respect to the interior space.

Description

toilet bowl

The present invention relates to a toilet bowl.

Traditionally, toilet bowls have a large upper opening, which is usually equipped with a pivoting seat ring, which is supported on the upper edge of the bowl and a drainage channel formed at the lowest point, through which flushed water is discharged into the bowl together with the excrement can be. Furthermore, the basin has a flushing water supply and a flushing opening opening into the interior of the basin, through which the flushing water can flow when the flush is actuated and flush out the inner surface of the basin.

For a long time, the upper edge of the pool was designed on the inside with a flushing channel that was open at the bottom but covered on the side. This should prevent the water supplied via the flushing water supply from splashing upwards out of the basin and at the same time the flushing water was guided from the rear side of the basin to the front end in order to supply the basin with flushing water from above in full and thus a to achieve a good rinsing effect of the entire inside of the basin. A disadvantage of this solution has proven to be the circumferential flushing channel, which is only accessible from below, since it is very difficult to clean and, for example, limescale can be deposited after a long period of use, which means that the flushing effect, particularly on the front side of the pool, deteriorates or even fails. through the Insufficient cleaning options can also accumulate dirt, mold and bacteria in this channel over time, which makes it impossible to use the pool hygienically and can lead to premature replacement.

So-called rimless or completely rimless (also referred to as rimless) toilet bowls have been available for some time now. Such pools do not have the disadvantages described above in terms of cleaning and hygiene, but they require a special construction, respectively. Shape of the flushing opening, which is usually located in the middle of the rear, upper area of the inner wall of the basin. This must ensure that the flushing water that is brought in cannot splash upwards over the flushing rim to the outside. In order to achieve a sufficient flushing effect in the front forehead area as well, either more water must be flushed in with a higher water requirement, or a complex and therefore generally more expensive construction of the flushing opening must be used. On the other hand, cleaning the inside of the pool is simplified and there is no risk of mold growth or bacteria deposits along the edge.

The object of the present invention was to further optimize the structure of a toilet bowl in order to enable good cleaning and at the same time to achieve an optimal flushing effect.

According to the invention, this object is achieved by a toilet bowl corresponding to the features of claim 1 . Further Embodiments result from the features of dependent claims 2 to 7.

In this case, a toilet bowl with a rim closing off the bowl opening with a rear, two lateral and one front area with a circumferential support surface, an inflow for flushing water with a flushing opening opening into the interior of the toilet bowl and a discharge opening arranged in the floor of the toilet bowl a drainage channel provided. According to the invention, at least one flushing opening is arranged in one of the lateral areas or front area of the rim in the inner side wall of the toilet bowl and is connected to the inflow for flushing water via a channel closed to the interior. The opening cross-section of the flushing opening is formed essentially perpendicular to the inner surface of the toilet bowl and is preferably completely upwards through the lower surface of the rim, respectively. the bearing surface is covered.

Due to this arrangement of the flushing opening, the flushing water is flushed tangentially into the side wall of the toilet bowl during the flushing process at high speed, which leads to a circularly rotating water vortex in the bowl. This flushes the entire inner surface of the toilet bowl with water and thus optimally transports urine, dirt particles and toilet paper away through the drain opening. The water consumption is advantageously lower than that of a comparable toilet bowl with a conventional flushing system. The level of

Opening cross-section of the scavenging opening is aligned essentially perpendicularly to the inner surface that prevents that the flushing water unintentionally splashes over the edge of the toilet bowl. As a result, the water is introduced almost tangentially to the inner surface, which, in addition to reducing spatter, also allows the flushing energy to be retained. By arranging part of the contact surface of the rim of the toilet bowl directly above the actual opening cross section, splashes or a misdirected water jet can be covered.

In a further embodiment according to the invention, the support surface in the rear area of the rim merges directly into the inner side wall of the toilet bowl without a flushing rim and, in the lateral area after the flushing opening, has at least a certain length inwardly protruding beyond the inner side wall Flushing rim with a flushing rim underside.

As already mentioned, an inwardly directed flushing rim, which is arranged in the area above the flushing opening, helps prevent flushing water from escaping unintentionally over the edge of the toilet bowl. In the rear area, which the water vortex only reaches after a certain flushing distance, this danger no longer exists and it is therefore possible to dispense with such an edge without any problems. This arrangement allows the inner surface of the toilet bowl to be cleaned particularly easily and yet, even during use, prevents urine from being able to spray upwards at the front.

In another embodiment, the top edge of the flushing port is level with or at most 45mm below level with respect to the level of the Flushing rim underside formed. So that we achieve a particularly effective feeding of the flushing water jet.

In a further embodiment, the opening cross section of the scavenging opening is formed essentially in the shape of a rhombus with rounded corners. The flushing opening preferably merges into the inner side wall of the toilet bowl via a rounded edge. The opening cross section is preferably larger than 500 mm ² , preferably at most 1500 mm ² .

This opening shape achieves a particularly intensive flush jet, which creates a strong vortex on the inside of the toilet bowl. This vortex also promotes the drainage of the water together with the particles contained in it and achieves an increased drainage effect, which reduces the risk of clogging the drainage pipes. The turbulence also reduces the risk of limescale deposits, which advantageously extends the service life of the drain lines and also the maintenance intervals.

In another embodiment, the opening cross section of the flushing opening extends practically from the underside of the support surface to at least one third of the height up to the bottom area of the inner side wall of the toilet bowl, preferably to the bottom area of the toilet bowl.

It has also been shown to be advantageous that the rinsing water flow achieved by this embodiment leads to a significant reduction in the noise generated during the rinsing process. In a further embodiment, the flushing opening is arranged from the rear of the toilet bowl at the earliest in front of the vertical plane of the front edge of the discharge mouth or further forward, preferably with an exit direction of the flushing water tangential or directed slightly inwards to the inner side wall of the toilet bowl, preferably with an exit direction of the flushing water parallel or slightly downwards with respect to the support surface, either on the left or right inner side of the toilet bowl.

Because the flushing water is guided practically tangentially to the curvature of the inner surface of the toilet bowl, the entire energy of the flowing water can be used to form the water vortex already mentioned and is not wasted by deflections that are not effective for flushing or cleaning, as is often the case with conventional flushing devices case is. A flushing effect that is constant over the entire operating time is also advantageously achieved, since the freely accessible flushing opening can be easily cleaned and, if necessary, also easily freed of limescale deposits, which could adversely affect the flushing effect.

In a further embodiment, the toilet bowl is made in one piece from a ceramic material or a plastic.

It should be noted here that the claimed features can be designed identically for both the design as a free-standing and as a wall-mounted pool. The type of flushing technology is also fundamentally independent, ie the design of the toilet bowl according to the invention is suitable are basically suitable for both flush, pressure flush or deep flush.

Exemplary embodiments of the present invention are explained in more detail below with reference to figures. Show it

Fig. 1 is a schematic view of a conventional toilet bowl;

Fig. 2 schematically shows the cross section of an edge area of conventional toilet bowls, viz

- 2a) a conventional flushing rim with a channel open at the bottom,

- 2b) a conventional flushing rim with a rim-free support surface, and

- 2c) a conventional flushing rim with a rimless support surface.

3 shows a schematic plan view of a toilet bowl according to the invention;

FIG. 4 shows a schematic view of the area of the lateral flushing outlet of the basin according to FIG. 3;

5 shows the longitudinal section through a toilet bowl designed according to the invention;

FIG. 6 shows the top view of the toilet bowl according to FIG. 5;

FIG. 7 shows the cross section through the toilet bowl according to FIG. 5 in a front view with the lateral flushing outlet visible; 8 cross-section corresponding to FIG. 7 in the area of an alternative embodiment of the flushing outlet.

FIG. 1 shows a schematic view of a conventional toilet bowl 1, here by way of example in the design of a so-called standing bowl. The toilet bowl has an upper opening, which is delimited by the surrounding bowl edge 2, which has an upward-facing, essentially flat and, after assembly, horizontal support surface 2a, on which a so-called toilet seat (not shown) can usually be placed , which is used for a good seated contact of the user with the toilet bowl. The urine and the excrement are collected in the interior of the toilet bowl and, after the flushing process has been triggered, through which water is flushed here, for example through a flushing opening 3 arranged in the rear edge of the bowl, into the inner space onto the inner wall 4 of the bowl, it is collected and via the (here not shown) discharge opening in the bottom of the toilet bowl.

Depending on the type of configuration of the flushing opening, different shapes of the basin edge 2 are used, as shown in the three figures 2a) to 2c) of conventional toilet bowls.

FIG. 2a) shows the design of a conventional toilet bowl with an edge 2 formed into a circumferential channel 5 that is open at the bottom is guided forward to the nose area of the toilet bowl and flows along the circumference of the edge through the open channel 5 into the toilet bowl. As can already be seen from the schematic figure, the channel which is open at the bottom, whether with or without an undercut, is rather difficult to clean and mold and bacteria can easily collect and deposit there. The water flow can be severely disturbed during the operating time by limescale deposits deposited there, which reduces the flushing performance. Especially the feeding of the water jet into this small cross-section is at high risk of calcification and normal cleaning is practically impossible.

FIG. 2b) shows a more recent, known variant of a toilet bowl, in which the edge is still equipped with a nose 6 directed towards the inside of the toilet bowl, but no longer has an actual channel. The advantage here can clearly be seen in the fact that cleaning is simplified while the contact surface remains the same, making it easier to prevent the deposit of mould, bacteria and limescale. However, here the flushing water can no longer simply be guided to the front of the toilet bowl, unless the flushing opening 3 (of FIG. 1) is designed in such a way that a targeted jet of water is directed forwards along the edge. In order to achieve a sufficient or good flushing effect, however, the water consumption is also increased and the technical complexity of the flushing opening is also greater, which makes the toilet bowl more expensive compared to the solution according to FIG. FIG. 2c) now again shows a conventional version of a toilet bowl, in which the edge 2 is designed entirely without a protruding lug. Although a visually appealing toilet bowl can be created in this way, which is also extremely easy to clean, the demands on the flushing opening 3 are even higher compared to the version according to FIG. 2b) and there is also the risk that not only flushing water but also urine splashes from around the toilet bowl.

FIG. 3 now shows the schematic plan view of a toilet bowl designed according to the invention. The external basic structure is practically no different from the conventional toilet bowl, except that the flushing opening is not arranged in the rear area of the toilet bowl and no channel is formed in the edge of the bowl 2 . The flushing opening 3 is here on the side, here arranged approximately in the middle of one side edge of the toilet bowl 1, with the opening plane of the flushing opening being oriented tangentially to the inner surface of the toilet bowl at this point, as can be seen from the schematic representation in Figure 4 is shown even better. The flushing water is not flushed into the toilet bowl at the back or in a downwardly open channel along the entire edge 2, but essentially tangentially to the side on one side of the bowl (see arrow in FIG. 4). This creates a strong, rotating vortex within the toilet bowl, which leads to a circularly rotating water vortex in the bowl. This flushes the entire inner surface of the toilet bowl with water and thus urine, dirt particles and toilet paper optimally through the outlet opening 7 transported away. The water consumption is advantageously lower than that of a comparable toilet bowl with a conventional flushing system.

In the embodiment shown in FIG. 3, the side and front area of the edge has a nose 6, which does not impair cleaning but instead prevents unwanted splashes to the outside. This nose can continue up to the rear area of the toilet bowl or can already be reduced in front of the rear area, so that the rear part and at least the area between the rear area and the flushing opening 3 form an edge without a nose.

FIG. 5 shows the longitudinal section of an embodiment of a toilet bowl according to the invention as a wall-mounted bowl. The position of the flushing opening 3 in the upper area of the inner wall of the toilet bowl can be seen particularly well from this illustration. This flushing opening 3 is fed with the flushing water through a closed flushing channel 7 formed in the wall of the toilet bowl. The opening level of the rinsing opening is inclined slightly downwards here in order to already give the emerging rinsing jet a slightly downward-pointing direction. On the one hand, this prevents part of the water jet from exiting the basin upwards and, on the other hand, this direction makes an additional contribution to particularly effective vortex formation.

FIG. 5 shows the toilet bowl from FIG. 5 in a top view with the flushing opening 3, which can be seen from above only at the edge, which upwards through the nose 6 of the edge 2 in the outlet area is practically covered and thus prevents splashes to the outside.

Finally, FIG. 7 shows a cross-section of the front view of the toilet bowl 1 according to FIGS. 5 and 6. The position, extent and shape of the flushing opening can now be seen here. The flushing opening 4 has a substantially diamond or. Rhombus-shaped exit surface, which extends practically from the top 2 to about half the depth of the front area of the interior of the toilet bowl.

In FIG. 8, analogously to FIG. 7, the cross section of an alternative embodiment is shown, in which the upper edge 3′ of the flushing opening 3 is formed at a distance H below the plane of the flushing edge underside 6′. This distance should have a value between 0 mm and a maximum of 45 mm.

Claims

patent claims

1. Toilet bowl (1) with a rim (2) terminating the bowl opening with a rear, two lateral and one front area with a circumferential support surface (2a), an inflow for flushing water with an opening into the interior of the toilet bowl (1). Flushing opening (3) and a discharge opening (8) of a discharge channel arranged in the base of the toilet bowl (1), characterized in that at least one flushing opening (3) in one of the lateral areas or front area of the edge (2) in the inner side wall of the toilet bowl (1) and is connected to the inflow for flushing water via a channel (7) that is closed to the interior, the opening cross-section of the flushing opening (3) being configured essentially perpendicularly to the inner surface of the toilet bowl (1) and upward preferably completely through the lower surface of the rim

(2) resp. the bearing surface is covered.

2. Toilet bowl according to claim 1, characterized in that the bearing surface (2a) merges into the inner side wall (4) of the toilet bowl (1) and in the lateral area after the flushing opening (3) forwards at least over a certain length has a flushing rim (6) which protrudes substantially horizontally inwards over the inner side wall and has a flushing rim underside (6').

3. Toilet bowl according to claim 2, characterized in that the upper edge (3a) of the flushing opening (3) is on the same level or at most 45 mm below the level in Is formed in relation to the plane of the flushing rim underside (6 ').

4. Toilet bowl according to one of claims 1 to 3, characterized in that the opening cross-section of the flushing opening (3) is essentially rhombus-shaped with rounded corners and preferably merges into the inner side wall of the toilet bowl (1) via a rounded edge and that the opening cross-section is preferably greater than 500 mm ² , preferably at most 1500 mm ² .

5. Toilet bowl according to one of Claims 1 to 4, characterized in that the opening cross section of the flushing opening (3) extends practically from the underside of the support surface (2) to at least one third of the height up to the bottom area of the inner side wall (4) of the toilet -Basin (1) extends at this point, preferably extends to the bottom area of the toilet bowl (1) at this point.

6. Toilet bowl according to one of claims 1 to 5, characterized in that the flushing opening (3) from the back of the toilet bowl (1) is arranged at the earliest in front of the vertical plane of the front edge of the discharge outlet (8) or further forward , preferably with an exit direction of the flushing water directed tangentially or slightly inwards to the inner side wall (4) of the toilet bowl (1), preferably with an exiting direction of the flushing water parallel or slightly downwards in relation to the supporting surface (2), either on the left or right inside of the toilet bowl.

7. toilet bowl according to any one of claims 1 to 6, characterized in that it is made in one piece from a ceramic material or a plastic.