CN116867946A

CN116867946A - Flush toilet

Info

Publication number: CN116867946A
Application number: CN202180093518.2A
Authority: CN
Inventors: 徐金周; T·P·凯勒
Original assignee: Swiss Enxun Ag
Current assignee: Swiss Enxun Ag
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2023-10-10
Also published as: EP4259883A1; WO2022171276A1

Abstract

The invention relates to a toilet bowl (1) having: a rim (2), said rim (2) closing the toilet opening and having a rear area with a circumferential support surface (2), two side areas and one front area; a flush water supply having a flush opening (3) to the interior space of the toilet bowl; and a discharge opening of a discharge conduit disposed in the base of the toilet. According to the invention, the flushing opening (3) is arranged in one of the two side areas of the rim (2) in the inner side wall of the toilet bowl (1) and is connected to the flushing water supply via a pipe closed with respect to the inner space.

Description

Flush toilet

The present invention relates to a toilet bowl.

Toilets typically have a large upper opening, typically provided with a pivotable seat ring that seats on the upper rim of the toilet, and a drain pipe formed at the lowest point through which water flushed into the toilet can drain along with the waste. Furthermore, the toilet has a flushing water supply and a flushing opening which opens into the interior space of the toilet, through which flushing water can flow and clean the interior surface of the toilet when flushing is activated.

For a long time, the upper rim of the toilet has been formed internally with a flush duct which is open at the bottom but covered at the sides. This is to prevent water supplied via the washing water supply means from being ejected upward out of the toilet bowl, and at the same time, it is used to guide washing water from the rear side of the toilet bowl to the front end surface so that the toilet bowl can be sufficiently supplied with washing water from above, thereby achieving a good washing effect of the entire interior of the toilet bowl. The circumferential flushing pipe, which is only accessible from below, has proved to be a disadvantage of this solution, since it can only be cleaned poorly and, for example, after a long period of use, scale may build up, thereby deteriorating or even eliminating the flushing effect, especially on the front side of the toilet. Due to the insufficient cleaning possibilities, impurities, mold and bacteria may also accumulate in the pipe over time, which may make sanitary use of the toilet impossible and may lead to premature replacement.

So-called rimless or completely rimless (also called rimless) toilets have also been available for some time. Such toilets do not have the above-mentioned drawbacks in terms of cleanliness and hygiene, but they do require a special structure or design of the flushing opening, which is usually centrally located in the rear upper region of the inner wall of the toilet. This must ensure that the flushing water does not splash up and out over the rim. In order to achieve a sufficient flushing effect also in the front end region, more water must be flushed with higher water demands or a more complex and thus often more expensive flushing opening design must be used. On the other hand, the internal cleaning of the toilet is simplified and there is no risk of mold or bacterial deposit forming along the rim.

The object of the present invention is now to further optimize the structure of the toilet bowl to achieve good cleaning and at the same time an optimal flushing action.

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

In this case, the toilet bowl is provided with: a rim closing the toilet opening and having a rear region with a circumferential support surface, two side regions and a front region; a flush water supply having a flush opening to an interior space of the toilet bowl; and a discharge opening of a discharge conduit disposed in a bottom of the toilet bowl. According to the invention, at least one flushing opening is arranged in one of the side or front regions of the rim in an inner side wall of the toilet bowl and is connected to the flushing water supply via a conduit closed relative to the inner space. The opening cross section of the flushing opening is formed substantially perpendicular to the inner surface of the toilet bowl and is preferably completely covered at the top by the lower surface of the rim or the support surface.

Due to this arrangement of the flushing openings, during flushing the flushing water is flushed tangentially into the side wall of the toilet bowl at a high speed, which results in the formation of a cyclically rotating water vortex in the toilet bowl. This allows the entire inner surface of the toilet bowl to be flushed with water, thereby draining urine, dirt particles and toilet paper through the drain opening. The water consumption is advantageously lower compared to a similar toilet with a conventional flushing system. The plane of the opening cross-section of the flush opening is aligned substantially perpendicular to the inner surface, thereby preventing the flush water from inadvertently splashing over the rim of the toilet bowl. Thus, water is introduced quasi-tangentially to the inner surface, which not only reduces splashing, but also retains the rinse energy. By placing part of the bearing surface of the rim of the toilet bowl directly above the actual opening cross section, splashes or misdirected water jets can be covered.

In a further embodiment according to the invention, the support surface merges directly into the inner side wall of the toilet bowl without a flushing rim and has a flushing rim of at least more than a certain length in a lateral region behind the flushing opening to the front, which flushing rim protrudes substantially horizontally inwards beyond the inner side wall and has a flushing rim underside.

As previously mentioned, the inwardly directed flush rim in the area above the flush opening helps to prevent inadvertent overflow of the toilet rim by flush water. In the rear region (only after a certain flushing distance the water vortex can reach the rear region), this risk no longer exists, so that such a rim can be dispensed with without any problem. This arrangement allows particularly easy cleaning of the inner surface of the toilet bowl and also prevents urine from splashing upwards at the front during use.

In another embodiment, the upper edge of the flushing opening is on the same plane with respect to the plane of the underside of the flushing edge or at most 45mm below said plane. This ensures a particularly effective supply of the flushing water jet.

In yet another embodiment, the opening cross-section of the flush opening is formed in a generally diamond shape with rounded corners. Preferably, the flushing opening merges into the inner side wall of the toilet bowl via a rounded edge. In this case, the opening cross section is preferably greater than 500mm ² Preferably at most 1500mm ² 。

This opening shape achieves a particularly strong flushing jet, which already achieves a strong vortex flow inside the toilet bowl. The turbulence also promotes the outflow of water with the particles contained therein and achieves an enhanced drainage effect, which reduces the risk of clogging the drain pipe. The vortex also reduces the risk of scale deposition, which is beneficial for extending the service life and maintenance intervals of the discharge pipe.

In a further 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 from 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 advantageously that the flushing water flow achieved by this embodiment results in a significant reduction of noise generated by the flushing process.

In a further embodiment, the flushing opening is arranged at the earliest before the vertical plane of the front edge of the discharge opening from the rear of the toilet bowl or further forward, preferably wherein the outlet direction of the flushing water is directed tangentially or slightly inwardly towards the inner side wall of the toilet bowl, preferably wherein the outlet direction of the flushing water is directed parallel or slightly downwardly relative to the support surface on the left or right side of the toilet bowl.

Because the flushing water is thus directed virtually 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 above-mentioned water vortex and is not dissipated by deflection which is ineffective for flushing or cleaning, which is often the case with conventional flushing devices. Furthermore, a constant flushing effect is advantageously achieved over the entire operating time, since the freely accessible flushing openings can be easily cleaned and, if desired, scale deposits, which have a negative effect on the flushing effect, can also be easily removed.

In another embodiment, the toilet bowl is integrally made of a ceramic material or plastic.

It should be noted here that the claimed features may be the same for both floor and wall hanging. The type of flushing technique is also substantially independent, i.e. the design of the toilet according to the invention is in principle applicable to squatting pan toilets, pressure flush toilets or flush toilets.

Exemplary embodiments of the present invention are explained in further detail below with reference to the attached drawing figures, wherein:

fig. 1 schematically illustrates a conventional toilet bowl;

fig. 2 schematically shows a cross-sectional view of a rim area of a conventional toilet, namely:

-a) of fig. 2 is a conventional flushing rim with a pipe opening at the bottom;

b) of fig. 2 is a conventional rinsing rim with a rimless contact surface; and

c) of fig. 2 is a conventional rinsing rim with a rimless bearing surface;

fig. 3 schematically shows a top view of a toilet according to the invention;

fig. 4 schematically shows the area of a lateral flushing outlet of the toilet according to fig. 3;

figure 5 shows a longitudinal section through a toilet designed according to this invention;

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

FIG. 7 shows a cross-sectional view of the toilet according to FIG. 5 in front view, with the lateral flush outlet visible;

fig. 8 shows a sectional view corresponding to fig. 7 in the region 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 a so-called floor toilet bowl embodiment. The toilet bowl has an upper opening defined by a circumferential toilet rim 2 having an upwardly facing, substantially flat and horizontal support surface 2a upon installation, on which support surface 2a so-called toilet seat (not shown) can be placed substantially, which serves to ensure good sitting contact of the user with the toilet bowl. Urine and faeces are collected in the inner space of the toilet bowl and, after triggering a flushing process, a flushing is performed there, for example through a flushing opening 3 arranged in the rear edge of the toilet bowl into the inner space on the inner wall 4 of the toilet bowl, whereby urine and faeces are sucked away and discharged via a discharge opening (not shown here) in the bottom of the toilet bowl.

Depending on the design type of the flushing opening, a differently shaped toilet rim 2 is used, as shown in the three figures of a conventional toilet, i.e. fig. 2 a) to 2 c).

Fig. 2 a) shows an embodiment of a conventional toilet bowl in which the rim 2 is formed as a circumferential duct 5 which opens downwards. In this embodiment, at least part of the flushing water is flushed into this pipe 5, whereby the flushing water is simultaneously guided from the rear to the front as far as the nose region of the toilet bowl and flows along the circumference of the rim through the downwardly open pipe 5 into the toilet bowl. As can already be seen from the schematic drawing, the bottom-opening pipe is difficult to clean, whether undercut or not, and mold and bacteria easily accumulate and deposit there. During operation, scale residues deposited there can severely disturb the water flow, which reduces the flushing performance. In particular, the supply of water jets to this small cross section also has a high risk of scaling and normal cleaning is practically impossible.

Fig. 2 b) shows a new, known variant of the toilet, in which the rim is still equipped with a nose 6 directed towards the inside of the toilet, but no longer with an actual pipe. The advantages are apparent here in the fact that the use of the same support surface simplifies cleaning and thus makes it easier to prevent the deposition of mould, bacteria and scale. Here, however, the flushing water can no longer be simply guided to the front side of the toilet bowl, unless the flushing opening 3 (fig. 1) is designed in such a way that: the target water jet is directed forward along the rim. However, in order to obtain a sufficient or good flushing effect, the consumption of water increases and the technical effort for flushing the opening is also greater, which results in an increased cost of the toilet bowl compared to the solution shown in fig. 1 a).

Fig. 2 c) now shows another conventional version of a toilet bowl, in which the rim 2 is designed completely without protruding nose. Although this may create a toilet bowl that is visually attractive and also very easy to clean, the requirements on the flushing opening 3 are even higher here than in the version shown in b) of fig. 2, and there is also the risk that both flushing water and urine splashes will be ejected from the area of the toilet bowl.

Figure 3 shows a schematic view of a toilet designed according to this invention. The basic outer structure is virtually no different from a 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 toilet rim 2. In fact, here the flushing opening 3 is arranged laterally, in this case approximately in the middle of one side edge of the toilet bowl 1, wherein the opening plane of the flushing opening is aligned tangentially to the inner surface of the toilet bowl at this point, as better shown from the schematic view in fig. 4. Thus, here, the flushing water does not flush into the toilet at the rear of the toilet or in a downwardly open pipe along the entire rim 2, but rather essentially tangentially at the side of one side of the toilet (see arrow in fig. 4). This creates a strong swirling vortex within the toilet bowl, resulting in a circular swirling water vortex in the toilet bowl. This flushes the entire inner surface of the toilet bowl with water, optimally transporting urine, dirt particles and toilet paper away through the discharge opening 7. The water consumption is advantageously lower compared to a similar toilet with a conventional flushing system.

In the embodiment shown in fig. 3, the lateral and front regions of the rim have noses 6 which do not interfere with cleaning, but which prevent unnecessary splashing to the outside. The nose can continue to the rear region of the toilet bowl or can already be reduced in front of the rear region, so that the rear and at least the region between the rear region and the flushing opening 3 form a rim without a nose.

Fig. 5 shows a longitudinal section of a wall-mounted toilet according to the invention. The position of the flushing opening 3 in the upper region of the inner wall of the toilet bowl is particularly clear in this illustration. The flushing opening 3 is supplied with flushing water through a closed flushing pipe 7 formed in the wall of the toilet bowl. Here, the opening plane of the flushing opening is slightly inclined downwards in order to give the flushing jet which has already occurred a slight downward direction. This prevents, on the one hand, that part of the water jet leaves the toilet at the top, and on the other hand, this direction makes an additional contribution to particularly efficient vortex formation.

The figure shows a plan view of the toilet of fig. 5, in which the flushing opening 3 is visible from above only at the rim, which flushing opening is in fact covered in the outlet area by the nose 6 of the rim 2 towards the top, so that splashing to the outside is prevented.

Finally, fig. 7 shows a sectional view of a front view of the toilet bowl 1 according to fig. 5 and 6. Here, the location, extent and shape of the irrigation openings are now all apparent. Here, the flushing opening 4 has a substantially diamond-shaped or diamond-shaped outlet surface which in practice extends from the upper rim 2 to a depth of slightly half the front area of the interior of the toilet bowl.

In fig. 8, similar to fig. 7, a cross-section of an alternative embodiment is shown, wherein the upper edge 3 'of the flushing opening 3 is formed with a distance H below the bottom plane of the flushing edge 6'. The distance should have a value between 0mm and a maximum of 45 mm.

Claims

1. A toilet bowl (1), the toilet bowl having: a rim (2), said rim (2) closing the toilet opening and having a rear region with a circumferential bearing surface (2 a), two side regions and a front region; a flushing water supply having a flushing opening (3) to the interior space of the toilet bowl (1); and a discharge opening (8) of a discharge conduit arranged in the bottom of the toilet bowl (1), characterized in that at least one flushing opening (3) is arranged in one of the side or front areas of the rim (2) in an inner side wall of the toilet bowl (1) and is connected to the flushing water supply via a conduit (7) closed with respect to the inner space, wherein the opening cross section of the flushing opening (3) is formed substantially perpendicular to the inner surface of the toilet bowl (1) and is preferably completely covered at the top by the lower surface or the bearing surface of the rim (2).

2. The toilet according to claim 1, characterized in that the bearing surface (2 a) merges into the inner side wall (4) of the toilet bowl (1) and has a flushing rim (6) facing forward and at least over a certain length in a lateral region behind the flushing opening (3), the flushing rim (6) protruding substantially inwardly horizontally beyond the inner side wall and having a flushing rim underside (6').

3. The toilet according to claim 2, characterized in that the upper edge (3 a) of the flushing opening (3) is formed on the same plane or at most 45mm below the plane with respect to the plane of the lower side (6') of the flushing edge.

4. A toilet according to any one of claims 1 to 3, characterized in that the opening cross-section of the flushing opening (3) is formed as a substantially diamond shape with rounded corners and preferably blends into the inner side wall of the toilet (1) via rounded edges and the opening cross-section is preferably greater than 500mm ² Preferably at most 1500mm ² 。

5. The toilet according to any one of claims 1 to 4, characterized in that the opening cross section of the flushing opening (3) extends virtually from the underside of the support surface (2) to at least one third of the height of the bottom area of the inner side wall (4) of the toilet bowl (1) at this location, preferably to the bottom area of the toilet bowl (1) at this location.

6. The toilet according to any one of claims 1 to 5, characterized in that the flushing opening (3) is arranged from the rear of the toilet (1) or further forward, at the earliest before the vertical plane of the front edge of the discharge opening (8), preferably wherein the outlet direction of the flushing water is directed tangentially or slightly inwards towards the inner side wall (4) of the toilet (1), preferably wherein the outlet direction of the flushing water is directed parallel or slightly downwards relative to the support surface (2) on the left or right side of the toilet.

7. The toilet according to any one of claims 1 to 6, wherein the toilet is integrally made of ceramic material or plastic.