Toilet with ring flushing

Abstract

The invention relates to a toilet comprising a toilet body (1) extending in a transverse direction (Y) between two transverse ends and extending in a longitudinal direction (X), wherein the toilet body (1) has a flush connection (2) for connecting to a flush pipe of a flushing device and a drain connection (3) for connecting to a drain pipe, wherein a central plane divides the toilet body (1) into two transverse halves, wherein a flushing chamber (7) of the toilet body (1) is delimited by a circumferential side wall and is connected to the flush connection by a flush channel (200) which opens into the flushing chamber (7) via a flush water discharge opening (10), wherein the side wall has a cross-section perpendicular to the longitudinal direction (X), wherein the side wall within one of the two transverse halves has a side wall section which extends with its longitudinal extent from a first transverse plane (C) to a second transverse plane (D),which each run parallel to the central plane, wherein the side wall section forms a convex curvature (100) and thus its cross-section has, at least in sections, a curvature around the longitudinal direction (X) which has a positive value.

Description

[0001] The invention relates to a toilet comprising a toilet body according to the preamble of claim 1 as well as a toilet arrangement comprising such a toilet and a use of a flushing device for flushing a flushing chamber of such a toilet.

[0002] Toilets comprising a toilet body are widely known in the art. The toilet body of such a toilet extends in a transverse direction between two transverse ends and in a longitudinal direction perpendicular to the transverse direction, from a rear end to a front end. Viewed from the front, one of the two transverse ends thus forms the left side of the toilet body, and the other of the two transverse ends forms the right side of the toilet body. The toilet body has a flush connection for connection to a flush pipe of a flushing device, which usually comprises a cistern or a pressure flusher, which, when actuated, is suitable for dispensing flush water, which is guided by means of the flush pipe to the flush connection of the toilet body.Furthermore, such a toilet body has a drain connection for connection to a drain pipe, wherein the drain connection is arranged below the flush connection with respect to a vertical direction that is perpendicular to the longitudinal and transverse directions. In addition, the toilet body has a flushing chamber that is open at the top and that is fluid-conductingly connected to both the flush connection and the drain connection. The flushing chamber is usually bowl-shaped and delimited by a side wall that runs around a vertical axis. The side wall is the side of a wall formed by the toilet body that faces the flushing chamber. The side wall usually has a shape similar to the inside of an upwardly open bowl, which is connected to the drain connection at its lower end via a drain channel and which is connected to the flush connection in an upper region via a flush channel.When used as intended, excretions are released into the flushing chamber from above, which are then flushed out of the flushing chamber using flushing water. Flushing water is supplied to the flush connection of the toilet body and, from the flush connection, is guided through a flush channel to a flush water discharge opening that opens into the flushing chamber of the toilet body. The flush water then flows along the side wall bordering the flushing chamber and reaches the open end of the drain channel, which borders the flushing chamber. The flush water is then drained through the drain channel to the drain connection. The drain channel usually forms a siphon to prevent unpleasant odors from escaping from a drain pipe connected to the drain connection into the flushing chamber and from there into the area surrounding the toilet. The toilet body itself is made of ceramic in most designs.However, embodiments are also known in which other materials are used, for example, plastic or metal. In addition to the toilet body, the toilet can comprise other components, such as a shower device, an air extraction device, toilet seat fastening elements, and / or a toilet seat.

[0003] When designing the toilet bowls of common toilets, attempts are made to meet a wide variety of requirements. Firstly, the toilet bowl should be visually appealing. Secondly, any soiling present in the flushing chamber, such as excreta, should be flushed out of the flushing chamber as completely as possible through the drain channel with a single flush, and flushing water should be prevented from flowing over the top of the open-top flushing chamber during a single flush. Furthermore, the flushing chamber should be as easy to clean as possible. Various approaches have been pursued in the prior art to best meet these requirements.For example, toilets with a toilet body having a flushing rim are known, with the flushing water discharge opening located on the underside of the flushing rim, circumferentially extending around a vertical axis, and the flushing water being discharged downwards along the side wall into the flushing chamber. Furthermore, toilets with a rimless toilet body are known, in which the toilet body has one or more flushing water discharge openings, each of which is connected to the flushing connection via the flushing channel and which are designed to discharge the flushing water into the flushing chamber with at least one directional component perpendicular to the vertical direction along the side wall.By discharging the rinse water with at least one component directed perpendicular to the vertical direction, the rinse chamber can be rinsed as completely as possible even with a small number of rinse water openings, each of which extends only over a small part of the circumference of the side wall around the said vertical axis, while simultaneously enabling a visually appealing design of the rinse chamber and the simplest possible cleaning of the rinse chamber. However, in the various known designs of the at least one rinse water discharge opening, the design of the side wall, via which the rinse water is guided from the respective rinse water discharge opening to the open end of the drain channel, has always proven critical.The design of the side wall has a significant influence on the flow behavior of the rinse water in the wash chamber during a wash cycle and, in addition, on the ability of the wash chamber to be rinsed out with rinse water. This is because, on the one hand, the shape of the side wall influences the flow dynamics of the water; on the other hand, the shape of the side wall influences how easily dirt deposited on it can be removed with rinse water. Therefore, various attempts have been made in the prior art to design the side wall as effectively as possible.

[0004] In particular, a relative arrangement of the at least one flush water discharge opening and the side wall, and a corresponding design of the side wall, has proven to be effective, in which the flush water in the flushing chamber flows in a vortex-like manner toward the open end of the drain channel during a flushing process. A toilet with a toilet body designed in this way is commonly referred to as a "toilet with annular flush." ​​Although the corresponding design of the at least one flush water discharge opening and the side wall for realizing a vortex-like flow of the flush water in the flushing chamber during a flushing process has proven to be technically simple to implement, achieving the most practical design has nevertheless proven to be complex.For example, it is known to design the side wall in a spiral shape to achieve such a vortex-like flow, so that the shape of the side wall causes the rinse water to flow in a vortex-like manner within the wash chamber. However, this results in a stepped design of the side wall, which, on the one hand, does not adequately meet all visual requirements and, on the other hand, can easily lead to contaminants becoming deposited that are difficult to remove, making the side wall, and thus the wash chamber, difficult to keep clean.In designs in which only one flushing water discharge opening is provided on one side of the flushing chamber and the bowl-like design of the side wall causes a eddy current-like flow of the flushing water in the side wall, it has proven difficult to adjust the geometry of the WC body in such a way that the flushing water can flow out of the flushing water discharge opening at a sufficient flow rate without flowing over the upper end of the side wall and at the same time clean the side wall as completely as possible.It should be taken into account that, during a specific flushing process and depending on the flushing device used, a certain amount of flushing water flows into the flush connection of the toilet body at a certain flow rate and flows into the flushing channel with these parameters specified by the flushing device and is discharged into the flushing chamber through at least one flushing water discharge opening, so that it is desirable to design the flushing chamber in such a way that, thanks to the design of the side wall, sufficient functionality is also provided for flushing devices that are designed differently.

[0005] The present invention is based on the object of providing a toilet or a toilet arrangement or a use of a flushing device for flushing a toilet, with which at least one disadvantage of known toilets or toilet arrangements or uses can be at least partially remedied.

[0006] As a solution to the problem underlying the present invention, the invention proposes a toilet with the features explained below. The toilet has a toilet body that extends in a transverse direction between two transverse ends and that extends in a longitudinal direction perpendicular to the transverse direction from a rear end to a front end. The toilet body has a flush connection for connecting to a flush pipe of a flushing device and a drain connection arranged vertically below the flush connection for connecting to a drain pipe. The flush connection or drain connection can be connectable to the flush pipe or drain pipe directly or by means of a connecting element. It is essential that the respective connection ensures fluid guidance of flush water or drain water from the flush pipe to the flush connection or from the drain connection to the drain pipe.The toilet bowl is divided into two transverse halves by a central plane running perpendicular to the transverse direction. The central plane is an imaginary sectional plane of the toilet bowl that divides the bowl into two transverse halves, each of which has an identical extension length along the transverse direction. The toilet bowl has a flushing chamber defined by a circumferential side wall of the toilet bowl and connected to the flush connection by a flushing channel that opens into the flushing chamber via a flush water discharge opening. The flushing channel thus provides a flushing water guide from the flush connection to the flush water discharge opening. The flushing channel opens into the flushing chamber via the flush water discharge opening to discharge flush water, thus enclosing the flushing chamber all the way around. As the flushing channel encloses the flush water discharge opening all the way around, the end of the flushing channel that opens into the flushing chamber forms the flush water discharge opening.In every position along the longitudinal direction, the side wall has a cross-section perpendicular to the longitudinal direction. The side wall thus refers to the side of the toilet body facing the flushing chamber at the level of the flushing chamber, which delimits the flushing chamber and thus defines the geometric extent of the flushing chamber. In every position in the longitudinal direction, the cross-section of the side wall is thus defined by a line running in a plane perpendicular to the longitudinal direction and extending from the lower end of the flushing chamber to the upper end of the flushing chamber. The term "side wall" in this case therefore refers to the surface formed by the toilet body that delimits the flushing chamber. In a typical design of a toilet body with a wall surrounding the flushing chamber, the side of this wall facing the flushing chamber is referred to as the "side wall," not the entire thickness of the wall.Typically, the toilet body is manufactured as a single-piece component from a material that forms the wall for the flushing chamber, a rear wall suitable for wall mounting, a drain channel with a siphon, and the flushing channel. Within one of the two transverse halves, the side wall has a side wall section that extends longitudinally from its rear longitudinal end to its front longitudinal end and extends over its entire longitudinal extent from a first transverse plane to a second transverse plane.The first and second transverse planes are imaginary planes that run parallel to the center plane and divide the toilet body such that the side wall section is arranged between them in the transverse direction, wherein the side wall section is bounded at its first transverse end by the first transverse plane and at its second transverse end by the second transverse plane, such that the two transverse planes define the extension length of the side wall section in the transverse direction. The second transverse plane is arranged closer to the center plane than the first transverse plane. The side wall section thus refers to a specific section of the side wall in one of the two transverse halves, wherein its length in the longitudinal direction is defined by the distance between the front and rear longitudinal ends in the longitudinal direction and its transverse extension length is defined by the two transverse planes.In one embodiment, such a sidewall section is provided in only one of the two transverse halves, as is explained below in various embodiments with its features. In another embodiment, a sidewall section is provided in each of the two transverse halves, which sidewall section has the features described below in connection with the sidewall section for various embodiments. According to the invention, the sidewall section forms a convex curvature between the first and second transverse planes, so that its cross-section has, at least in sections, a curvature around the longitudinal direction that has a positive value.The cross section of the side wall section, which, as explained, is a cross section perpendicular to the longitudinal direction, is formed by a section of the line representing the cross section of the side wall formed as a surface in a specific position along the longitudinal direction within the side wall section. According to the invention, at least within a longitudinal section of the side wall section, in particular over the entire longitudinal extent of the side wall section, the cross section of the side wall section has a curvature around the longitudinal direction, which has a positive value, over at least part of its extension length between the two transverse planes.

[0007] In one embodiment according to the invention, the curvature of the cross-section in a front longitudinal end section of the side wall section has a lower value averaged between the first and second transverse planes than in a rear longitudinal end section of the side wall section and / or the maximum of the curvature of the cross-section is greater in the rear longitudinal end section of the side wall section than in the front longitudinal end section of the side wall section. The front longitudinal end section is offset in the longitudinal direction from the rear longitudinal end. The rear longitudinal end section extends forward in the longitudinal direction from the rear longitudinal end, whereas the front longitudinal end section extends rearward from the front longitudinal end. The extension length of each longitudinal end section in the longitudinal direction is preferably 30% of the total longitudinal extension of the side wall section between its longitudinal ends.The maximum curvature of the cross-section in the respective longitudinal end section is the maximum curvature of the cross-section in the respective longitudinal end section that has the greatest value compared to the maxima of the other cross-sections within the respective longitudinal end section. The value of the curvature of the cross-section of a specific longitudinal end section, averaged between the first and second transverse planes, is an average value over the entire areal extent of the respective longitudinal end section, i.e., an average value obtained from the curvature of the cross-section at all surface points within the longitudinal end section.For example, the average curvature of the cross-section of a longitudinal end section can be calculated from the mean of the average curvature determined for all cross-sections (which follow one another along the longitudinal direction over the length of the respective longitudinal end section) within the respective longitudinal end section, each between the first and second transverse planes. Of course, the focus is not on the absolute value of the respective value, but on the value itself, i.e., taking its sign into account. This applies to both the value of a maximum and an average value.

[0008] The invention offers significant advantages over known toilets. While in known toilets the side wall defining the flushing chamber is usually completely concave, i.e. has a negative curvature that decreases from back to front, such that the value of the curvature increases from back to front, as the course of the side wall usually flattens out towards the front, the present invention takes a completely different approach. The inventors have recognized that it is particularly advantageous to provide a side wall section of the side wall which is located entirely within one of the two transverse halves, which has a convex curvature and whose curvature changes along the longitudinal direction such that the convex curvature decreases as the side wall section progresses from back to front.By providing such a convex curvature, flushing water that encounters the convex curvature in a rear area of ​​the wash cabinet with a directional component perpendicular to the vertical direction can experience additional downward drainage pressure due to the convex curvature within one transverse side. Since the open end of the drainage channel typically opens into the wash cabinet in a rear area of ​​the wash cabinet, increased downward drainage pressure can be generated at the open end of the drainage channel, which particularly promotes the expulsion of contaminants from the wash cabinet along with the flushing water.By extending the convex curvature within the side wall section and, as explained, becoming smaller from back to front within the course of the side wall section, the convex curvature can further contribute to ensuring that a portion of the rinsing water is led directly downwards into the drain channel, but that a sufficient portion of the rinsing water also flows over a significant portion of the side wall so that the side wall can be cleaned of dirt as completely as possible.The convex curvature is particularly advantageous in embodiments in which one, in particular the only, flushing water discharge opening of the toilet body is arranged in the first transverse half, so that the flushing water which strikes the convex curvature in a rear region of the flushing chamber with a directional component perpendicular to the vertical direction, has already passed through part of the first transverse half and completely through the second transverse half, starting from the flushing water discharge opening, circulating around a vertical axis. Generally speaking, the open end of the drainage channel opening into the flushing chamber extends within the same longitudinal section as the side wall section. In one embodiment, the side wall section, i.e. both its front and rear longitudinal ends, is arranged within a longitudinal section within which the open end of the drainage channel opening into the flushing chamber extends.In general, the flush water discharge opening and the side wall of the toilet body are preferably designed and arranged to correspond to one another in such a way that flush water emerging from the flush water discharge opening flows through the flushing chamber in a swirling manner around a vertical axis, so that the flush water flows along the vertical axis in a swirling manner along the side wall, with at least part of the flush water flowing around the vertical axis at least twice. The focus here is on flush water that flows through the flush water discharge opening into the flushing chamber in a flushing process in which 6 l of flush water is discharged from one flushing direction in a surge into the flush connection of the toilet body. It is precisely with such a design of a toilet body, which is sufficiently known in the prior art, for implementing a ring flush orFor vortex flushing, the provision of the side wall section with a convex curvature has proven particularly advantageous, since, precisely with such flushing, the flushing water flows around the vertical axis several times, i.e., circulates by more than 360°, and thus, in addition to a significant component perpendicular to the vertical direction, a sufficient downward discharge pressure of the flushing water must still be ensured, particularly in such applications. Furthermore, the use of the invention has generally proven particularly advantageous in embodiments in which a flushing water discharge opening is provided only in one transverse half, in particular only a single flushing water discharge opening.Such embodiments in particular have proven to be particularly advantageous for providing a ring flush and, moreover, have proven to be particularly easy to keep clean, whereby in such embodiments in particular there is a considerable need for flushing water to be guided both circulating around the vertical axis and with a sufficient discharge pressure downwards into the discharge channel.

[0009] In one embodiment according to the invention, the convex curvature extends over a greater width in the transverse direction in a rear region of the sidewall than in a front region of the sidewall. Thus, the cross-section in a rear region of the sidewall extends over a greater length in the transverse direction with a positive curvature, forming said convex curvature, than in a front region of the sidewall.Preferably, the rear region is provided behind the longitudinal center of the washing chamber at a distance of at least 10%, in particular at least 15% of a total longitudinal extent of the washing chamber, which indicates the length of the washing chamber in the longitudinal direction, and the front region is arranged at a distance of at least 10%, in particular at least 15%, in particular at least 20%, in particular at least 30% of the total length of the washing chamber from the front absolute longitudinal end of the washing chamber and at the same time is arranged in front of the longitudinal center. Generally advantageously, the convex curvature provided in said transverse half is thus reduced even within a centrally located region of the side wall. Generally preferably, the convex curvature is provided entirely within the explained side wall section with its properties explained for various embodiments.

[0010] In one embodiment according to the invention, the convex curvature formed in one of the two transverse halves of the side wall has a front end, wherein the side wall, in the same transverse half in which the convex curvature is provided, is concave in front of the convex curvature over a total vertical extension length of the convex curvature. This can particularly advantageously reduce the effect of the convex curvature on a rear region of the washing compartment, whereas the concave curvature, which extends over the same vertical extension section as the convex curvature, can ensure improved guidance of the washing water with a component perpendicular to the vertical direction.

[0011] In an embodiment according to the invention, the cross section of the side wall section, starting from the first transverse plane, has a concave curvature in its course to the second transverse plane, which is followed by the convex curvature, the convex curvature becoming smaller towards its front longitudinal end.By having a cross-section of the side wall section over its entire longitudinal extension length which initially has a concave curvature followed by a convex curvature, rinsing water can advantageously be guided above the convex curvature with a component perpendicular to the vertical direction, while at the level of the convex curvature it is advantageously pressed vertically downwards to a greater extent, wherein the reduction in the convex curvature reduces this effect towards the front longitudinal end of the side wall section, so that towards the front longitudinal end the rinsing water is increasingly guided along the side wall with a directional component perpendicular to the vertical direction so that it can advantageously circulate around the described vertical axis. The reduction in the convex curvature can mean a reduction in its extension length in the transverse direction and / or a reduction in its curvature averaged over its transverse course.

[0012] In one embodiment according to the invention, the cross-section of the side wall within the side wall section has an average downward gradient in a transverse section starting from the first transverse plane and extending towards the second transverse plane, which gradient is smaller in a rear longitudinal section of the side wall section than in a front longitudinal section of the side wall section. The rear longitudinal section of the side wall section is preferably formed by the rear 40%, in particular by the rear 30%, of the longitudinal extension length of the side wall section, and / or the front longitudinal section is preferably formed by the front 40%, in particular by the front 30% of the longitudinal extension length of the side wall section. In one embodiment, the rear longitudinal section corresponds to the explained rear longitudinal end section and the front longitudinal section corresponds to the explained front longitudinal end section.The inventors have recognized that, contrary to usual practice, it is particularly advantageous if the gradient within the sidewall section is smaller in a rear area than in a front area. Typically, the gradient of the sidewall is always greater in a rear area than in a front area, since the rear area slopes as steeply as possible toward the open end of the drainage channel.However, the inventors have recognized that it is particularly advantageous to provide a smaller gradient at the rear than at the front in a specific side wall section, so that a greater gradient can be provided below the side wall section in the rear area, so that in the side wall section itself the flushing water, when it flows with a component perpendicular to the longitudinal direction, is preferably passed along the side wall perpendicular to the vertical direction, while below the side wall section it can be guided in a targeted manner with drainage pressure into the open end of the drainage channel.In one embodiment, the side wall has a positive curvature with its cross section within the longitudinal extension of the rear longitudinal section directly adjacent to the side wall section below the side wall section, whereas it has a negative curvature within the longitudinal extension of the front longitudinal section directly below the side wall section, wherein the side wall extends with its cross section within the longitudinal extension area of ​​the front longitudinal section below the side wall section over at least 80%, in particular at least 90% of its transverse extension up to the open end of the drainage channel with its cross section with a negative curvature, ie concave.

[0013] In one embodiment according to the invention, the rinsing chamber is connected to the drain connection by a drain channel, the drain channel having an upwardly facing open end and a siphon, the side wall merging into the drain channel on both transverse sides and at the front of the open end via a continuous convex edge. In advantageous embodiments, the convex edge thus generally defines the end of the side wall and the end of the drain channel, which directly adjoin one another. The convex edge runs continuously from one of the transverse sides of the open end across the front to the other of the transverse sides of the open end of the drain channel. The position of the edge is defined by the maximum of the convex curvature at the transition from the side wall to the drain channel.In general, the maximum of the convex curvature is preferably a local maximum that is vertically spaced from a sealing water level. The sealing water level is the water level, i.e., the flat water surface, of sealing water remaining in the siphon after a flushing process when the vertical direction is aligned parallel to the gravitational force acting on the earth. Preferably, the convex edge is precisely that local maximum of the positive curvature of the side wall that is vertically closest to the sealing water level, so that the drainage channel runs below this convex edge, and the drainage channel is directly connected to the side wall by this convex edge.In some embodiments, a corresponding section of the convex edge can be provided at the rear of the open end, so that the convex edge is formed to be completely closed and circumferential around the clear cross-section of the drain channel at the open end. In particularly preferred embodiments, however, the side wall merges smoothly into the drain channel at the rear of the open end so that dirt can slide as advantageously as possible from the side wall into the drain channel. Such a configuration of side wall and drain channel, which are directly adjacent to one another and abut one another via a corresponding convex edge extending at least over the two transverse sides and the front of the open end of the drain channel, is known in the prior art for a variety of toilets.In the context of the present invention, particular advantages according to the invention arise with regard to the convex edge with which the side wall merges into the drainage channel. In one embodiment, the convex curvature is arranged above the convex edge and is vertically spaced from the convex edge. In one embodiment, the convex edge runs within the rear longitudinal end section of the side wall section and outside the front longitudinal end section of the side wall section, wherein in particular the front longitudinal end of the side wall section is spaced from a front longitudinal end of the drainage channel by at least 10%, in particular at least 20%, in particular by exactly 10%, in particular by exactly 20%, of the longitudinal extension length of the open end of the drainage channel. In one embodiment, the convex curvature of the side wall section forms the convex edge in the rear longitudinal end section of the side wall section, i.e.that the convex curvature in the rear longitudinal end section of the side wall section directly borders the open end of the drainage channel, whereas the convex edge runs outside the front longitudinal end section of the side wall section. Generally preferably, the convex edge is arranged vertically below the side wall section over at least 70% of its extension length, in particular over at least 80% of its extension length, in particular over its entire extension length, and is vertically spaced from the side wall section, in particular vertically spaced by at least 5 mm, in particular at least 10 mm, in particular at least 15 mm, in particular at least 20 mm. The extension length is the circumferential length of the convex edge with which it runs continuously around a vertical axis on the two transverse sides and on the front side of the open channel or forms the two transverse sides and the front side of the open end.Generally preferably, the side wall extends at least over a longitudinal section between the explained convex curvature and the convex edge with a curvature having the value ≤0. Generally preferably, the center plane runs through the clear cross-section of the drainage channel, so that the two transverse sides of the open end are located in a respective other of the two transverse halves.

[0014] In one embodiment according to the invention, the open end of the drainage channel has a front side, a rear side, and a first and a second transverse side, wherein the first transverse side lies in the first transverse half of the toilet body and the second transverse side lies in the second transverse half of the toilet body. The open end of the drainage channel can be designed as described herein for other embodiments of the invention; in particular, the first and second transverse sides can have the properties also described herein in connection with other embodiments. The same applies to the front side. Preferably, the side wall slopes less steeply towards the two transverse sides and towards the front side of the open end of the drainage channel than towards the rear side of the open end of the drainage channel.

[0015] Thus, in its respective vertical sections, with which it directly borders the transverse sides and the front of the open end of the drainage channel, the side wall has a smaller downward gradient than at the rear. Preferably, the vertical sections each extend vertically upwards by 2 cm from the open end. In one embodiment, the flushing water discharge opening is arranged in the first transverse half, wherein the side wall in the first transverse half slopes down at a first gradient towards the first transverse side of the open end of the drainage channel in its rear longitudinal extension half and slopes down at a second gradient towards the second transverse side of the open end of the drainage channel in its front longitudinal extension half.The side wall naturally extends over a longitudinal extension length along the longitudinal direction, whereby its longitudinal extension length can be divided into two longitudinal halves of equal length in the longitudinal direction. In the first transverse half, the side wall slopes downwards at a first gradient to the first transverse side of the open end of the drainage channel, and in the second longitudinal half, it slopes downwards at a second gradient to the first transverse side of the open end of the drainage channel. The gradient can vary over the vertical extension of the side wall and, depending on its course, thus also over the transverse extension of the side wall and also along the longitudinal extension of the side wall.Preferably, the first gradient is, on average, smaller than the second gradient across a vertical side wall region of the side wall arranged below the flush water discharge opening, the vertical ends of which are defined by an upper and a lower vertical position. The lower and upper vertical positions are defined identically across the entire longitudinal extent of the side wall. The side wall naturally extends vertically from the open end of the drain channel upwards to the open end of the flushing chamber which it delimits, thus usually to the top of the toilet body. The said vertical side wall region preferably has a vertical extent which is at least 20%, in particular between 20% and 70%, in particular between 20% and 50% of the total vertical extent of the side wall and / or at least 2 cm and a maximum of 10 cm, in particular between 3 cm and 5 cm.While the vertical extension length of the side wall can vary in some embodiments, e.g., depending on the vertical position of the convex edge defining the open end of the drainage channel, the total vertical extension length is the absolute longest vertical extension length of the side wall over its circumference around a vertical axis running through the wash cabinet. Preferably, the lower vertical position, i.e., the lower vertical end of the vertical side wall region, is defined by the vertically highest position of the convex edge defining the open end of the drainage channel in the first transverse half.The vertical side wall section preferably extends vertically downwards directly from the convex edge, which is explained in more detail here and which delimits the lower water guide surface of the flushing water guide, so that the lowest vertical position of this convex edge, located in the first transverse half, defines the said upper vertical position, i.e. the upper end of the vertical side wall section. In one embodiment, the vertical side wall section ends with its lower end, at least in longitudinal sections, at the open end of the drainage channel. In one embodiment, the first gradient in an upper vertical section of the vertical side wall region has a first value W 1o averaged over its vertical extent and in a lower vertical section of the vertical side wall region has a second value W 1u averaged over its vertical extent.The ratio V 1 between these two averaged values ​​is preferably: V 1 =W 1o / W 1u <1. In one embodiment, the second gradient in the upper vertical section of the vertical sidewall region has a first value W 2o averaged over its vertical extent and in the lower vertical section of the vertical sidewall region has a second value W 2u averaged over its vertical extent. The ratio between the two averaged values ​​is denoted by V 2 : V 2 =W 2o / W 2u . In one embodiment, the following applies: V 1<V 2 . In einer Ausführungsform gilt: V 2 > 1. The upper and lower vertical sections are defined sections along the vertical direction. The side wall extends over the respective defined vertical sections.Preferably, the upper vertical section extends over the upper vertical extension half and the lower vertical section extends over the lower vertical extension half of the vertical side wall region, so that the entire vertical extension of the vertical side wall region is formed by the upper and lower sections. The upper and lower vertical sections are the same for both longitudinal extension halves to define the first gradient in the first longitudinal extension half and to define the second gradient in the second longitudinal extension half, i.e. their respective vertical ends are absolutely fixed. In one embodiment, the upper vertical section and the lower vertical section lie directly adjacent to one another, wherein in particular the lower vertical section ends with its lower end at least in some longitudinal sections at the open end of the drainage channel.In one embodiment, the upper vertical section and the lower vertical section lie directly adjacent to one another. In one embodiment, the side wall section lies entirely in the first transverse half and entirely within an angular range of less than 120°, in particular less than 100°, in particular entirely within an angular range of 90°, wherein the angular range refers to an angle of rotation about an axis of rotation which runs parallel to the vertical direction and which lies in the central plane and which runs through a longitudinal center of the washing chamber, wherein the angle 0° is defined by a line lying in the central plane and running rearwardly from the axis of rotation. The longitudinal center of the washing chamber is determined by the longitudinal position which is midway between the frontmost and rearmost ends of the washing chamber.The inventors have discovered that by changing the curvature of the cross-section of the side wall within the side wall section, which provides a change in the convex curvature, a particularly advantageous effect can be achieved in the aforementioned angular range. This is because rinse water, which flows forward from the rear of the wash cabinet with a longitudinal direction component, can be guided particularly advantageously by the side wall within the side wall section.

[0016] In one embodiment according to the invention, the first transverse plane is spaced from the second transverse plane along the transverse direction by at least 5 mm, in particular by at least 10 mm, in particular by 10 mm. In one embodiment, the first transverse plane is spaced from the second transverse plane along the transverse direction by a maximum of 15 mm. Particularly preferably, the rear longitudinal end of the side wall section is spaced from the front longitudinal end by at least 5 cm, in particular by at least 7 cm, in particular by 7 cm. By arranging the transverse plane accordingly, the arrangement of the side wall section with the properties described therein is particularly advantageously determined, which, as explained above, can be particularly advantageous for the flushing water flow.

[0017] In one embodiment according to the invention, the side wall of the washing chamber forms a washing water guide extending forward from the washing water discharge opening, having a lower water guide surface and a lateral water guide surface. The lateral water guide surface preferably forms an end of the washing water guide that is furthest away from the center plane along the transverse direction, in particular with respect to each longitudinal position of the washing water guide, i.e. in particular to each position of the washing water guide that it has along the longitudinal direction. The lower water guide surface preferably runs over at least 70%, in particular at least 80%, in particular at least 90% of its extent along the transverse direction at an angle between 70° and 110°, in particular between 80° and 100°, relative to the vertical direction.The lower water guide surfaces can ensure that the rinse water discharged via the rinse water discharge opening is guided with a significant directional component perpendicular to the vertical direction within the rinse chamber, so that the rinse water can flow over the largest possible area of ​​the side wall bordering the rinse chamber. Generally, the side wall section is preferably arranged exclusively below the lower water guide surface. Generally, the upper and lower vertical sections explained above are preferably arranged exclusively below the lower water guide surface.In one embodiment, the lower water-guiding surface forms a horizontally extending shoulder for guiding the water, wherein it is delimited on a first transverse side by the lateral water-guiding surface and on a second transverse side by a convex edge, via which the side wall transitions into a region arranged vertically below the lower water-guiding surface. The first transverse side of the lower water-guiding surface is spaced further from the center plane along the transverse direction than the convex edge. The convex edge is defined by the maximum curvature at the transition from the lower water-guiding surface to the region of the side wall arranged below it. Accordingly, the region arranged below and the lower water-guiding surface lie directly against one another along the convex edge.Generally preferably, the side wall section is arranged exclusively below the lower water-guiding surface and is spaced apart from the convex edge along the vertical direction. Generally preferably, the cross section of the side wall section has a concave curvature at the upper end of the side wall section, i.e., a curvature with a negative sign, so that the side wall section is arranged below the convex edge and only after the curvature of the cross section of the side wall has changed sign. Preferably, the side wall section begins with its upper end at precisely the position at which the cross section of the side wall has a change of sign, starting from the convex edge that delimits the lower water-guiding surface.In one embodiment, the side wall section extends along the vertical direction over at least 25%, in particular over less than 50%, of a vertical section whose upper vertical end is formed by the convex edge delimiting the lower water-guiding surface and whose lower vertical end is formed by the convex edge defining the open end of the drainage channel. Preferably, the side wall section is spaced apart from both the convex edge delimiting the lower water-guiding surface and the convex edge defining the open end of the drainage channel along the vertical direction by at least 1%, in particular at least 5%, of the vertical extension length of said vertical section.

[0018] In one embodiment, the lower water guide surface, starting from the rinse water discharge opening, encircles a longitudinal center of the rinse chamber located in the center plane over at least 160°, in particular at least 230°, in particular at least 270°, in particular at least 300°, in particular at least 320°, in particular at least 340° with its circumferential length. The angle 0° is defined by the axis which, starting from the longitudinal center located in the center plane, runs through the center of the clear cross-section of the rinse water discharge opening, wherein the axis of rotation to which the angle specifications refer runs in the vertical direction. Preferably, the lower water guide surface forms a horizontally running shoulder over its circumferential length, which is suitable for guiding the water along the circumference of the lower water guide surface around the longitudinal center of the rinse chamber.Particularly preferably, the lower water guide surface drops vertically by less than 2 cm, in particular less than 1 cm, in particular less than 0.5 cm over its entire circumferential length, starting from the rinse water discharge opening, and also rises vertically by less than 2 cm, in particular less than 1 cm, in particular less than 0.5 cm over its entire circumferential length, starting from the rinse water discharge opening. Thus, the lower water guide surface preferably does not form a significant gradient for the rinse water guided on it, but is designed to guide the rinse water only around the longitudinal center of the rinse chamber, which lies in the central plane, so that the rinse water can be guided as advantageously as possible and without losing a significant amount of height, and thus multiple circumnavigation of the said longitudinal center by the rinse water within the rinse chamber can be supported.Generally preferably, the rinse water discharge opening is designed to discharge the rinse water in a longitudinal direction forwards onto the lower water guide surface. In one embodiment, the lower water guide surface has a width which, starting from the rinse water discharge opening, changes over at least the first half of its circumferential length by less than 40%, in particular by less than 30%, in particular by less than 20% of its width present at the rinse water discharge opening and which decreases in the second half of its circumferential length, in particular in the angular range between 180° and 360°, in particular in the angular range between 180° and 270°, to less than 50%, in particular less than 30%, in particular less than 20% of its width present at the rinse water discharge opening.In one embodiment, the width of the lower water guide surface changes over a circumferential section of the water guide surface, which forms 80% of the first half of its circumferential length, by less than 10% of a value of its width averaged over this circumferential section. In particular, its width decreases in the second half of its circumferential length, in particular in the angular range between 180° and 360°, in particular in the angular range between 180° and 270°, to less than 50%, in particular less than 30%, in particular less than 20% of the value of the width averaged over the circumferential section. The first half of its circumferential length naturally begins at the level of the rinse water discharge opening. The width of the lower water guide surface is limited on one side by the lateral water guide surface, and on the other side preferably by the convex edge explained.As previously explained, the angle specifications refer to an angle around a vertical axis of rotation that runs through a longitudinal center of the wash cabinet located in the center plane, with the angle of 0° being defined by the center of the clear cross-section of the wash water discharge opening. By keeping the width of the lower water guide surface approximately constant at first and only reducing significantly in a rear angular range, the largest possible proportion of wash water can initially be guided over a considerable angular range on the lower water guide surface and then the wash water can flow downwards to an increasing extent down the side wall even before reaching a complete revolution around the said axis of rotation, thus ensuring the most complete and effective washing of the side wall possible.Particularly preferably, the width of the lower water guide surface decreases by less than 20% of its width at the rinse water discharge opening within an angular range around the said axis of rotation between 0° and 200°, in particular between 0° and 220°. In one embodiment, the width of the lower water guide surface decreases within an angular range between 180° and 360°, in particular between 200° and 360°, in particular between 220° and 360°, starting from an amount of its width that is at least 80% of the width at the rinse water discharge opening, down to less than 10%, in particular less than 5% of its width at the rinse water discharge opening. Preferably, the width of the lower water guide surface in an angular range between 300° and 360° is consistently less than 30%, in particular less than 20%, in particular less than 15% of its width at the rinse water discharge opening.Thus, it is preferably provided that the lower water guide surface tapers off at larger angles, i.e., has a significantly decreasing width. On the one hand, this ensures that a significant portion of the flushing water flows downwards to the drain channel in the aforementioned angle range below the lower water guide surface, thereby generating drainage pressure. On the other hand, this can prevent, if possible, difficult-to-clean deposits of dirt on the side wall above the rear of the open end of the drain channel.

[0019] In one embodiment according to the invention, the toilet body forms a roof-like horizontal projection above the flush water discharge opening, which thus runs vertically above the lower water guide surface. The roof-like horizontal projection can prevent flush water from splashing out over the upper open end of the flushing chamber, if possible. In one embodiment, the roof-like horizontal projection, starting from the flush water discharge opening, encircles a longitudinal center of the flushing chamber lying in the center plane over at least 180°, in particular at least 230°, in particular at least 250° with its circumferential length. Reference is made here to an angle of rotation about a vertical axis of rotation which runs through the longitudinal center lying in the center plane. In one embodiment, the projection has a width that decreases by less than 30%, in particular less than 20%, over its circumferential length.Generally preferably, the projection has a width that is at least 50%, in particular at least 70%, in particular at least 90% of the width of the lower water-guiding surface above which it extends during its circumference. The width of the roof-like projection is preferably limited on one side by the lateral water-guiding surface, and on the other side by the end of the projection facing the central plane. In embodiments in which no lateral water-guiding surface is provided, the corresponding end of the width is limited by a section of the side wall that adjoins the projection in the vertical direction, delimits the washing chamber along the transverse direction and points towards the longitudinal center of the washing chamber lying in the central plane.In one embodiment, the projection extends with its width from the lateral water guide surface to the longitudinal center of the washing chamber located in the center plane and has a width of at least 1 cm, in particular at least 1.5 cm, over at least 80% of its circumferential length, wherein it has the said minimum width in particular starting from the washing water discharge opening and over the adjoining at least 80% of its circumferential length.

[0020] In one embodiment according to the invention, a rinse water discharge opening is provided in only one of the two transverse halves, in particular only in the first transverse half. The rinse water discharge opening explained is therefore preferably the only rinse water discharge opening and is located in the first transverse half. In one embodiment, the rinse water discharge opening is designed as only a single through opening and is therefore uninterrupted, so that it opens into the washing compartment with a continuous clear cross-section. In one embodiment, the rinse water discharge opening points towards the front. In one embodiment, the rinse water discharge opening has a horizontal width of at least 20 mm and less than 40 mm and a vertical height of at least 20 mm and at most 40 mm. The inventors have found that through the corresponding arrangement orDesign of the flushing water discharge opening allows the flushing water to be discharged particularly advantageously into the flushing chamber, in particular to create a vortex-like flush.

[0021] In one embodiment, the cross section of the side wall has a curved profile at least in one longitudinal region, in particular within the side wall section, the curvature of which changes sign at least twice, in particular at least three times. Preferably, the cross section of the side wall has such a curved profile at least in one side wall sub-region, which extends in particular exclusively within the side wall section, the curvature of which changes sign at least twice, in particular at least three times, wherein the side wall sub-region preferably extends over at least 10% of the longitudinal extension length of the washing chamber and at least 10% of the vertical extension length of the washing chamber, in particular over 20% of the longitudinal extension length and 20% of the vertical extension length of the washing chamber.

[0022] In an embodiment according to the invention, the side wall extends with its cross section, which runs perpendicular to the longitudinal direction, forming the convex curvature in its downward course, initially over a first transverse section with a negative curvature around the longitudinal direction and in a second transverse section adjoining the first transverse section with a positive curvature around the longitudinal direction, wherein over a longitudinal extension region of the side wall, in particular over the convex curvature, in the course from rear to front, the transition from the first transverse section to the second transverse section lies further down with increasing distance from the rear end.The first and second transverse sections of the side wall are three-dimensional sections of the side wall, wherein at different longitudinal positions they can each have a different course perpendicular to the longitudinal direction and vertical ends that change depending on the longitudinal position, and thus also transverse ends. The first and second transverse sections are preferably located at least partially, in particular completely, within the side wall section. Since the transition from the first transverse section, in which the side wall runs with its cross-section with a negative curvature, to the second transverse section, in which the side wall runs with its cross-section with a positive curvature, slopes downwards with increasing distance from the rear end of the toilet body, the beginning of a convex curvature formed by the positive curvature slopes downwards.The first and second transverse sections directly adjoin one another at the position where the sign of the curvature changes. This advantageous embodiment particularly preferably ensures that a convex curvature is provided in the side wall, tapering downwards towards the front, thereby enabling a particularly targeted guidance of the flushing water along the side wall. Generally, the cross-section of the side wall preferably extends continuously with a positive curvature over a region from the transition between the first and second transverse sections to the open end of the drain channel.Preferably, the vertical extension length of the second transverse section—and correspondingly, due to the defined course of the side wall, thus also the transverse extension length of the second transverse section—is defined by the vertical extension length of the region of the side wall in which it extends continuously with a positive curvature, starting from the transition between the first and second transverse sections to the open end of the drainage channel. Preferably, the first and second transverse sections lie entirely within only one of the two transverse halves separated from each other by the center plane, in particular in the first transverse half.Preferably, the first and second transverse sections lie in an angular range between 0° and 170°, in particular between 10° and 160°, wherein the angle is based on an angle of rotation about a rotation axis running in the vertical direction, and wherein the angle 0° is formed by a straight line lying in the center plane and pointing backwards. Preferably, the transition from the first to the second transverse section extends over at least 50%, in particular at least 70% of the said vertical extension length of the second transverse section. Thus, in one embodiment, the side wall has a first and a second transverse section, which are designed as explained and are provided directly adjacent to one another and between which the transition is provided as explained, so that the convex curvature tapers downwards towards the front.The transition preferably extends from the rear end of the toilet body forward over a vertical extension length that amounts to at least 50%, in particular at least 70%, of the said vertical extension length of the second transverse section. The vertical extension length of the second transverse section preferably decreases from rear to front, starting from a rear vertical extension length, by at least 50%, in particular at least 70%, in particular at least 90%, of the rear vertical extension length.

[0023] In an embodiment according to the invention, the side wall in the other of the two transverse halves has another side wall section which extends with its longitudinal extent in the longitudinal direction from its rear longitudinal end to its front longitudinal end and which extends over its entire longitudinal extent from a third transverse plane to a fourth transverse plane, wherein the third and fourth transverse planes each run parallel to the center plane and the fourth transverse plane is arranged closer to the center plane than the third transverse plane.The other side wall section, which is located in the other of the two transverse halves, forms a different convex curvature between the third and fourth transverse planes, so that its cross-section has, at least in sections, a curvature about the longitudinal direction which has a positive value, wherein the curvature of the cross-section in a front longitudinal end section of the other side wall section has a lower value averaged over its course between the third and fourth transverse planes than in a rear longitudinal end section of the other side wall section and / or wherein the maximum of the curvature of the cross-section in the rear longitudinal end section of the other side wall section is greater than in the front longitudinal end section of the other side wall section. The other convex curvature or the other side wall section can have properties and features as described in connection with the convex curvature orthe side wall section provided in one transverse half of the toilet body. The third and fourth transverse planes can have properties as described for the first and second transverse planes. Thus, in one embodiment, a side wall section with the explained properties can be provided in each of the two transverse halves of the toilet body. In this embodiment, a flush water discharge opening is particularly preferably provided in each of the transverse halves, preferably at a rear end of the flushing chamber furthest away from the center plane.In another embodiment, no other side wall section is provided in the other transverse half, but only in one of the two transverse halves is such a side wall section, described here with its properties, provided, wherein in this embodiment, a flushing water discharge opening, in particular only a single flushing water discharge opening, is particularly preferably provided only in the transverse half in which the side wall section is provided, in particular at the rear end of the washing chamber furthest away from the center plane.

[0024] In one embodiment according to the invention, the flushing channel extends from the flushing connection to the flushing water discharge opening with its channel extension and has a cross-section perpendicular to its channel extension, which decreases at least in a channel extension section adjacent to the flushing connection, starting from the flushing connection towards the flushing water discharge opening. This can particularly advantageously ensure that in a section in which the flushing water enters the flushing channel with high impact force and thus with the formation of turbulence, the flushing channel initially has the largest possible clear cross-section, which then decreases. Particularly preferably, a channel extension section adjoining this channel extension section, which adjoins the flushing connection, is provided, which in particular extends over at least 50%, in particular at least 60%, of a total channel extension length.Particularly preferably, the cross-section in this adjoining channel extension section remains constant. In one embodiment, the cross-section increases in a channel extension section adjacent to the flushing water discharge opening toward the flushing water opening. Preferably, the channel extension section adjacent to the flushing water discharge opening adjoins the channel extension section, which in turn adjoins the channel extension section adjacent to the flushing connection. Generally, the cross-section of the flushing channel increases along its channel extension toward the flushing water discharge opening in a channel extension section adjacent to the flushing water discharge opening, which thus forms one end of the channel extension of the flushing channel, with which it forms the flushing water discharge opening.Preferably, this channel extension section adjacent to the flushing water discharge opening extends along the channel extension over at least 2 cm, in particular at least 3 cm. By increasing the cross-section, the flushing channel can be manufactured particularly advantageously, in particular by means of a core part during the ceramic manufacturing process, by means of which a uniform contour of the flushing channel can be formed at the level of the flushing channel opening, which can be uniformly provided with a glaze and subsequently fired. In one embodiment, the flushing channel has a flushing channel wall with a wall thickness that encloses its clear cross-section. The clear cross-section of the flushing channel can generally be equated in embodiments with the aforementioned cross-section of the flushing channel.Preferably, the wall thickness of the flush channel wall is greater in a channel extension section adjacent to the flush water discharge opening than in a channel extension section adjacent to this in the direction of the flush connection. The inventors have recognized that this can ensure, on the one hand, a particularly robust and uniform contour of the toilet body toward the flushing chamber. On the other hand, the inventors have recognized that the wall thickness can be particularly advantageously defined by using a core part during the ceramic production process.

[0025] In one embodiment, the toilet has a shower facility arranged in a recess in the toilet body, wherein the recess is arranged above the lower water guide surface and / or opens into the flush channel. By arranging the recess accordingly, the recess itself and thus also the shower facility can be installed in the toilet body in a particularly space-saving and economical manner. Generally speaking, the shower facility preferably rests in a sealing manner against an edge formed by the toilet body and surrounding the recess. The recess is preferably a recess in the side wall that delimits the flushing chamber. This allows the shower facility to be installed particularly easily and advantageously such that, when actuated, it is arranged at a suitable location within the flushing chamber.In one embodiment, the toilet body has a passage behind the flushing chamber on at least one of its transverse sides, in particular on each of its transverse sides, in each of which an actuating element is arranged that is connected to the shower facility. The passage is a passage starting from a transverse side of the toilet body, which forms an outer side of the toilet body, to a region of the toilet body that is not accessible from the transverse outer side and is preferably provided outside the flush pipe. This region is preferably formed by a downwardly open cavity in the toilet body. Thus, a functional element for the shower facility can be arranged outside the flushing chamber within the toilet body and can be actuated through the passage.

[0026] In one embodiment according to the invention, the rinse water discharge opening and the side wall are configured to correspond to one another in such a way that rinse water exiting the rinse water discharge opening flows in a vortex-like manner along the side wall in the washing chamber, circumferentially surrounding a vertical axis, with at least a portion of the rinse water flowing around the vertical axis several times. Preferably, at least 20% of the rinse water flows around the vertical axis over more than 360°, preferably at least 5% of the rinse water over more than 720°.

[0027] The invention further relates to a toilet arrangement comprising a toilet according to the invention and a flushing device connected to the flushing connection of the toilet. The flushing device comprises an actuating device by means of which it can be actuated to release flush water for flushing the flushing chamber of the toilet. Thus, by actuating the flushing device, flush water can be released from the flushing device to the flushing connection of the toilet and from there to the flushing water discharge opening, so that the flush water released by the flushing device during an actuation process is released into the flushing chamber through the flushing water discharge opening. The flushing device and toilet are designed to correspond to one another in such a way that the flush water flows through the flushing chamber, as explained, to flush the flushing chamber, in particular as explained as being particularly advantageous for the various embodiments of the invention.

[0028] The invention further relates to the use of a flushing device for flushing a toilet according to the invention. The flushing device is operated to deliver flush water to the flush connection of the toilet, after which the flush water is delivered through the flush water discharge opening into the flushing chamber of the toilet with at least a directional component perpendicular to the vertical direction, in particular in the longitudinal direction forwards. At least a portion, in particular at least 10%, in particular at least 20%, in particular at least 30%, of the flush water circulates around a vertical axis running through the flushing chamber, starting from the flush water discharge opening, by more than 480°, in particular by more than 540°, in particular by more than 720° in the flushing chamber. Preferably, the vertical axis runs through the longitudinal center of the flushing chamber, which lies in the center plane. Only after the described circulating of the vertical axis does the said portion of the flush water reach the drain channel of the toilet and from there to the drain connection.During its circulation around the vertical axis, the said part of the rinsing water preferably runs along an upper side of the convex curvature described in an angular range between 270° and 480°.

[0029] The various embodiments of the invention each represent a solution to the objective technical problem underlying the present invention, but can be combined with one another particularly advantageously. Thus, the described embodiments of the invention and inventive solutions can each have features that are described herein in connection with other embodiments of the invention or other solutions. All described embodiments are to be regarded as embodiments of the invention. The various embodiments of the invention can each further have features that are apparent to the person skilled in the art from the present explanation of known embodiments.

[0030] The invention is explained in more detail below with reference to five figures using an exemplary embodiment.

[0031] They show: Figure 1: in a schematic principle representation, a perspective view of a toilet body of an embodiment of a toilet according to the invention; Figure 2: in a schematic principle representation, a further perspective view of the toilet body according to Figure 1 ; Figure 3: in a schematic principle representation a further perspective view of the toilet body according to Figure 1 ; Figure 4: in a schematic principle representation, a further perspective view of the toilet body according to Figure 1 ; Figure 5: in various schematic diagrams, cross sections through the toilet body according to Figure 1 at different longitudinal positions.

[0032] In the Figures 1-4 a toilet body 1 of an embodiment of a toilet according to the invention is shown in various simplified schematic representations, in each of which different perspective views of the toilet body 1 are shown. In Figure 1The toilet body 1 is shown in perspective diagonally from above at the front, in Figure 4 its back is shown in a perspective tilted position. In the Figures 2 and 3 are oblique side views of the toilet body 1 from above, in which at least partially the two transverse sides and the front of the toilet body 1 can be seen. Figure 1-4 are explained together below.

[0033] The toilet body 1 extends along the longitudinal direction X from its rear end A to its front end B. With its vertical height, it extends from its lower end to its upper end along the vertical direction Z. With its width, ie transverse extension length, the toilet body 1 extends along the transverse direction Y between its two transverse ends. In the representation according to Figure 1The first transverse end is formed by the left side of the toilet body 1, and the second transverse end is formed by the right side of the toilet body. The toilet body 1 has two fastening holes 11 on its rear side, which forms its rear end A. These holes serve to receive a conventional fastening bolt, usually designed as a threaded bolt, by means of which the toilet body 1 can be mounted on a wall. To mount the toilet body 1, such a fastening bolt can be fixed relative to the toilet body 1 using known fastening means after it has been inserted through the respective associated fastening hole 11. The present toilet body 1 is designed for mounting from below, which is generally advantageous according to the invention.This means that the toilet body 1 has a cavity accessible from below, so that the forward-facing side of the fastening holes 11 is accessible from below when the toilet body 1 is mounted on a wall in such a way that its rear side rests against the wall and is fixed relative to the wall by fastening means cooperating with the fastening bolt, by being pressed against it. For stabilization purposes, the present toilet body 1, generally advantageous according to the invention, has a stabilizing bracket 12 at its vertically lower end, which forms a section of the rear side of the toilet body 1 and spans the cavity of the toilet body accessible from below, thus connecting the lateral body sections of the toilet body 1 that delimit this cavity to one another, thus stabilizing them relative to one another. Furthermore, the toilet body 1 has a flush connection 2 and a drain connection 3.In the present exemplary embodiment, these are arranged on the rear side, with their respective clear cross-sections pointing rearward along the longitudinal direction, which is generally advantageous according to the invention. In other embodiments according to the invention, however, it can also be provided that the flush connection 2 and / or drain connection 3 is arranged or points at an angle and / or offset to the rear side, wherein it can be connected by means of a connecting element to an associated flush pipe of a flushing device or an associated drain pipe of a drainage system. From the overview of the . Figures 1-4It can be seen that the toilet body 1 has a flushing chamber 7 that is bowl-shaped and open at the top, as is generally customary with toilet bodies. In the present exemplary embodiment, and in a manner generally advantageous according to the invention, the upper end of the flushing chamber 7, which lies in a plane running perpendicular to the vertical direction Z, is designed in the manner of a rectangle with rounded corners, with a generally preferred deviation from a rectangular shape being such that the transverse extent of the rectangle decreases towards the front end of the flushing chamber.The rectangular design of the upper end of the flushing chamber has proven particularly advantageous for both aesthetic and functional reasons of the toilet body. It is essential for the rectangular design that the open end of the flushing chamber 7 is straight on two opposite transverse sides over a longitudinal section, wherein the longitudinal section preferably has a longitudinal extension length of at least 20%, in particular at least 30% of the total longitudinal extension length of the flushing chamber, so that there is a clear deviation from a round design of the upper end of the flushing chamber. The side wall delimits the flushing chamber 7 completely circumferentially around a vertical axis that runs through the flushing chamber. At its upper end, the side wall forms the upper end of the flushing chamber, wherein the upper end of the side wall forms a section of the upper end of the toilet body 1.At its lower end, the circumferential side wall opens into a drain channel 8, by means of which the rinsing chamber 7 is connected to the drain connection 3 in a fluid-carrying manner.

[0034] As from Figure 4 As can be seen, the drain channel forms a conventional siphon, with the siphon being provided between the drain connection 3 and the open end of the drain channel adjacent to the washing chamber. With its open end, the drain channel directly adjoins the lower end of the side wall that defines the washing chamber 7. Figures 1-4 It can be seen that the side wall delimiting the flushing chamber 7 is formed by the inside of the WC body 1, which delimits the flushing chamber 7. The open end of the drain channel has, as can be seen from the overview of the Figures 1-3visible, a first transverse and a second transverse side, which are connected to one another by a front side of the open end. The side wall provided above the drainage channel 8 merges into the open end of the drainage channel 8 via a convex edge 80, which is provided on both transverse sides of the open end of the drainage channel 8 and which extends continuously over both transverse sides and the front side of the open end of the drainage channel 8. The open end at the rear of the drainage channel 8, and thus preferably the lower end of the side wall orits vertical position, is generally preferably defined by a straight line in cases where no convex edge is provided on the rear side of the drainage channel 8 which defines its open end, which straight line runs firstly through the rear end of the convex edge 80 on the first transverse side of the open end of the drainage channel 8 and secondly through the rear end of the convex edge 80 on the second transverse side of the open end of the drainage channel 8. In the event that the washing chamber still extends behind the straight line, for example due to an arc-like design of the rear side of the drainage channel 8, the lower end of the side wall on the rear side of the drainage channel is defined by a plane spanned by this straight line and the longitudinal direction and running rearward from the straight line.In general, the toilet body 1 can of course be divided into two transverse halves, which are separated from one another by an imaginary center plane that runs perpendicular to the transverse direction Y through the transverse center of the toilet body 1. Both transverse halves thus extend over the same length along the transverse direction Y. In the exemplary embodiment described here, the center plane runs through the transverse center of the flushing chamber 7, which is generally advantageous according to the invention. Generally preferably, the transverse center of the flushing chamber 7 and that of the drainage channel 8 are located at the same longitudinal position so that they coincide - with respect to the longitudinal direction X. Furthermore, the center plane preferably runs through the transverse center of the recess 5, which is generally advantageously provided in the toilet body 1. The recess 5 is designed as a recess in the side wall that encloses the flushing chamber 7.A shower device can be inserted into the recess 5, which opens into the flushing channel 200, which in . Figure 4 is shown. Thus, the shower facility can be installed on the toilet body 1 in a particularly space-saving and user-friendly manner.

[0035] The toilet body 1 further comprises fastening receptacles 4 on its upper side for attaching a toilet seat, which is generally advantageous according to the invention. Furthermore, the toilet body 1 in this case comprises a passage 9 on each of its transverse sides, in which an actuating element for actuating the shower device can be arranged, which can be inserted into the recess 5. The passage 9 leads into the cavity provided below the flushing chamber, so that an actuating device arranged in the passage 9 can be particularly advantageously connected to a functional element of the shower device, which is located in this cavity and which can be used to operate the shower device, for example, to control the shower device and / or to supply the shower device with shower water. Figures 1-4It is further apparent that the flushing channel 200, starting from the flushing connection 2, has a first channel extension section with a cross-section perpendicular to its channel extension, which is larger than an adjoining channel extension section 201, which branches off laterally from the first-mentioned channel extension section. Due to the large cross-section of the channel extension section adjoining the flushing connection 2, on the one hand, flushing water entering the flushing connection 2 can be conducted in as large a volume as possible, and on the other hand, the shower device can advantageously be arranged in a space-saving manner, opening into the flushing channel 200. Of course, the shower device is supplied with water via its own water connection, which is connected to a water pipe. The arrangement in the flushing channel 200 is merely geometrically advantageous.The flushing channel 200 continues as far as a flushing water discharge opening 10, which is designed to discharge flushing water into a flushing water guide 6. In the present exemplary embodiment, and generally advantageously according to the invention, the toilet body 1 has only a single flushing water discharge opening 10, so that the flushing channel 200 opens into the flushing chamber 7 only through the one flushing water discharge opening 10. The flushing water guide 6 has a lower water guide surface 61 and a lateral water guide surface 62. The lower water guide surface 61 merges via a circumferential convex edge 60 into a region of the side wall located below it. Thus, the circumferential edge 60 limits the width of the lower water guide surface 61 on one side, and the lateral water guide surface 62 on another side.The lower water guide surface 61 extends over more than 340°, which is generally advantageous and generally referred to as approximately 360°, around a vertical axis that lies in the central plane and runs through the longitudinal center of the flushing chamber. Its width changes only insignificantly in a first angular range of more than 180°, but changes considerably in the subsequent 180°, so that it initially guides a large proportion of the flushing water directed onto it around said vertical axis, but then tapers off towards the rear of the toilet body or flushing chamber 7, which is generally advantageous according to the invention. The lower water guide surface 61 extends essentially horizontally, which is generally advantageous according to the invention, and thus has virtually no downward gradient. Thus, the lower water guide surface 61 lies essentially at a vertical height over its entire circumferential length.Flushing water, which passes via the convex edge 60 from the lower water guide surface 61 to an underlying area of ​​the side wall, is guided from the side wall to the drain channel 8.

[0036] Already the Figures 1-3 It can be seen that the WC body 1 in its first transverse half, namely in the Figure 1 shown right transverse half, has a convex curvature 100, which is located at least partially within a side wall section that extends between two transverse planes and extends from a rear longitudinal end to a front longitudinal end, wherein the convex curvature 100 extends only within a rear region of the rinsing chamber 7 and becomes smaller towards the front and ends. The convex curvature 100 and the said side wall section are described below with reference to Figure 5 comprehensively the Figures 5a and 5b explained in more detail.

[0037] In Figure 5a and in Figure 5ba cross-section of the toilet body 1 is shown perpendicular to the longitudinal direction X. The cross-section thus runs in the transverse direction Y and in the vertical direction Z. In Figure 5a the cross section is shown in a first longitudinal position, in Figure 5b in a second longitudinal position, wherein the second longitudinal position is in front of the first longitudinal position, ie is further away from the rear of the toilet body 1 than the first longitudinal position. In the present embodiment, the first longitudinal end of the side wall section is arranged behind the first longitudinal position and the second longitudinal end of the side wall section is arranged in front of the second longitudinal position, so that the Figures 5a and 5b shown longitudinal positions lie within the longitudinal extent of the side wall section. Figures 5a and 5bFurthermore, a first transverse plane C and a second transverse plane D are shown, both of which run perpendicular to the transverse direction Y and thus in the vertical direction Z and in the longitudinal direction X. The transverse planes C, D limit the side wall section in the transverse direction Y. From the Figures 5a and 5bAlso visible is the circumferential convex edge 80, which delimits the drainage channel 8 at its open end, with which it opens into the rinsing chamber, as well as the rinsing water guide 6 with its lower water guide surface 61 and lateral water guide surface 62, and the convex edge 60 with which the lower water guide surface 61 merges into the underlying region of the side wall. The explained side wall section is generally preferably spaced apart, at least in longitudinal sections, along the vertical direction Z from both the convex edge 60 delimiting the lower water guide surface 61 and the convex edge 80 defining the end of the drainage channel 8, wherein the convex edge 60 delimiting the lower water guide surface 61 and the convex edge 80 defining the end of the drainage channel 8 extend outside the side wall section.In this case, the convex edges 60, 80, each defined by the circumferential course of a local curvature maximum, lie outside the sidewall section. From the . Figures 5a and 5b It is also clear that the cross-section of the side wall is represented by a line. Figures 5a and 5b For illustrative purposes, a section through the toilet body 1 is shown in a plan view, wherein the line mentioned, which represents the cross-section of the side wall in section, is represented by the line of the section delimiting the flushing chamber 7. From the overview of the Figures 5a and 5b It can be seen that in the first longitudinal position the side wall in the first transverse half (this is the case in the described embodiment in the figures shown in Figures 5a and 5bshown representations (in each case the right transverse half) initially has a concave curvature 300 in its extension from the first transverse plane C to the second transverse plane D, which is followed by a convex curvature 100, whereas in the second longitudinal position the side wall no longer has such a transition from a concave curvature to a convex curvature. Furthermore, it can be seen that the cross-section of the side wall section in the first longitudinal position initially has a curvature with a negative value, forming the concave curvature 300, after which the sign changes so that it has a curvature with a positive value, whereas in the second longitudinal position it has a very small positive value throughout.The curvature of the cross-section in the first longitudinal position has a larger average value than in the second longitudinal position, and the maximum of the curvature in the first longitudinal position is larger than the maximum of the curvature in the second longitudinal position.

[0038] The first longitudinal position is just behind the flushing water discharge opening 10, the second longitudinal position is in front of the flushing water discharge opening 10. Accordingly, Figure 5a In the first transverse half the clear cross-section of the flushing channel 200 can be seen, whereas in Figure 5b In the first transverse half only the flushing water guide 6 is visible, since the Figure 5b shown cross section is located in front of the flushing water discharge opening 10. The flushing water discharge opening 10 opens into the flushing water guide 6 in the first transverse half. In addition, in the Figures 5a and 5bThe recess 5 can be seen, which is suitable for accommodating a shower device and which, as already explained, opens into the flushing channel 200. In addition, Figure 5bThe roof-like projection 13 is shown, which, generally advantageous according to the invention, delimits the flushing water guide 6 at its upper end and extends above the lower water guide surface 61, concealing it. Furthermore, it can be seen from the overview that the roof-like projection 13, generally advantageous according to the invention, is arranged above the flushing water discharge opening 10, directly adjoins the flushing water discharge opening 10, and covers it over its entire transverse extent, in particular protruding towards the center plane along the transverse direction Y beyond the extent of the flushing water discharge opening 10.The flushing water discharge opening 10 is provided in such a way that it is designed to discharge flushing water along the longitudinal direction X forwards into the flushing water guide 6, which is generally advantageous according to the invention, wherein in particular the flushing water discharge opening 10 is designed to discharge the flushing water in an average outflow direction which has an angle between 70° and 110°, in particular 80° and 100° to the vertical direction Z. List of reference symbols

[0039] 1 WC body 2 Flush connection 3 Drain connection 4 Mounting holes 5 Recess 6 Flush water guide 7 Flushing chamber 8 Drain channel 9 Passage 10 Flush water discharge opening 11 Mounting hole 12 Stabilizing bracket 13 Roof-like projection 60 Convex edge 61 Water guide surface 62 Water guide surface 80 Convex edge 100 Convex curvature 200 Flush channel 201 Channel extension section 300 Concave curvature ARear end BFront end CTransversal plane DTransversal plane XLongitudinal direction YTransversal direction ZVertical direction

Claims

1. A toilet comprising a toilet body (1) extending in a transverse direction (Y) between two transverse ends and extending in a longitudinal direction (X) from a rear end (A) to a front end (B), wherein the toilet body (1) has a flush connection (2) for connecting to a flush pipe of a flushing device and a drain connection (3) arranged in the vertical direction (Z) below the flush connection (2) for connecting to a drain pipe, wherein a central plane perpendicular to the transverse direction (Y) divides the toilet body (1) into two transverse halves, wherein a flushing chamber (7) of the toilet body (1) is delimited by a circumferential side wall and is connected to the flush connection (2) by a flushing channel (200) which opens into the flushing chamber (7) via a flush water discharge opening (10), wherein the side wall has a cross-section perpendicular to the longitudinal direction (X) at every position along the longitudinal direction (X). has,wherein the side wall within one of the two transverse halves has a side wall section which extends with its longitudinal extent in the longitudinal direction (X) from its rear longitudinal end to its front longitudinal end and which extends over its entire longitudinal extent from a first transverse plane (C) to a second transverse plane (D), wherein the first and the second transverse plane (C, D) each run parallel to the center plane and the second transverse plane (D) is arranged closer to the center plane than the first transverse plane (C), , characterized in thatthe side wall section forms a convex curvature (100) between the first and second transverse planes (C, D) and thus its cross section has, at least in sections, a curvature about the longitudinal direction (X) which has a positive value, wherein the curvature of the cross section in a front longitudinal end section of the side wall section has a lower value, averaged between the first and second transverse planes (C, D), than in a rear longitudinal end section of the side wall section and / or that the maximum of the curvature of the cross section in the rear longitudinal end section of the side wall section is greater than in the front longitudinal end section of the side wall section.

2. Toilet according to claim 1, characterized in thatthe convex curvature (100) extends in a rear region of the side wall over a greater width in the transverse direction (Y) than in a front region of the side wall, and / or that the convex curvature (100) has a front end, wherein the side wall is concave in the same transverse half in which the convex curvature (100) is provided, in front of the convex curvature over a total vertical extension length of the convex curvature.

3. WC according to one of the preceding claims, characterized in that the cross-section of the side wall within the side wall section has, in a transverse section starting from the first transverse plane (C) and extending towards the second transverse plane (D), an average downward gradient which is smaller in a rear longitudinal section of the side wall section than in a front longitudinal section of the side wall section.

4. Toilet according to one of the preceding claims, characterized in thatthe cross-section of the side wall section, starting from the first transverse plane (C), has a concave curvature (300) in its course to the second transverse plane (D), which is followed by the convex curvature (100), the convex curvature (100) becoming smaller towards its front longitudinal end.

5. Toilet according to one of the preceding claims, characterized in thatthe rinsing chamber (7) is connected to the drain connection (3) by a drain channel (8), the drain channel (8) having an upwardly pointing open end and a siphon, the side wall merging into the drain channel (8) on both transverse sides and at the front via a continuous convex edge (80), the convex edge being arranged below the side wall section over at least 70% of its extension length, in particular over its entire extension length, and being spaced apart from the latter by a vertical distance, the vertical distance being in particular at least 5 mm, in particular at least 10 mm.

6. Toilet according to one of the preceding claims, characterized in thatthe open end of the drain channel (8) has a front side, a rear side, and a first and a second transverse side, wherein the first transverse side lies in the first transverse half of the toilet body (1) and the second transverse side lies in the second transverse half of the toilet body (1), wherein the side wall slopes less steeply towards the two transverse sides and towards the front side of the open end of the drain channel (8) than towards the rear side of the open end of the drain channel (8), wherein in particular the flushing water discharge opening (10) is arranged in the first transverse half, and the side wall in the first transverse half slopes down at a first gradient towards the first transverse side of the open end of the drain channel (8) in its rear longitudinal extension half, and slopes down at a second gradient towards the second transverse side of the open end of the drain channel (8) in its front longitudinal extension half,wherein in particular the first gradient is smaller, averaged over a vertical side wall region of the side wall arranged below the flushing water discharge opening, the vertical ends of which are defined by an upper and a lower vertical position, than the second gradient, wherein in particular the first gradient in an upper vertical section of the vertical side wall region has a first value W averaged over its vertical extent, 1o and in a lower vertical section of the vertical side wall region a second value W averaged over its vertical extent 1u where the ratio V1=W 1o / W 1u <1, wherein in particular the second gradient in the upper vertical section of the vertical side wall region has a first value W averaged over its vertical extent 2oand in a lower vertical section of the vertical side wall region a second value W averaged over its vertical extent 2u where the ratio V2=W 2o / W 2u , where in particular V1<V2, wobei insbesondere V2> 1.

7. Toilet according to one of the preceding claims, characterized in thatthe side wall section lies entirely in the first transverse half and entirely within an angular range of less than 120°, in particular less than 100°, in particular entirely within an angular range of 90°, around a vertical axis of rotation running through a longitudinal center of the washing chamber (7) lying in the center plane, wherein the rear end of the center plane is defined as the 0° angle, and / or that the first transverse plane (C) is spaced from the second transverse plane (D) along the transverse direction (Y) by at least 5 mm, in particular at least 10 mm, and in particular by a maximum of 15 mm, in particular by 10 mm, wherein in particular the rear longitudinal end of the side wall section is spaced from the front longitudinal end by at least 5 cm, in particular by 7 cm.

8. Toilet according to one of the preceding claims, characterized in thatthe side wall of the washing chamber (7) forms a washing water guide (6) extending forwards from the washing water discharge opening (10) and having a lower water guide surface (61) and a lateral water guide surface (62), wherein in particular the side wall section is arranged exclusively below the lower water guide surface (61), wherein in particular the lower water guide surface (61) forms a horizontally running shoulder for guiding the water and is delimited on a first transverse side by the lateral water guide surface (62) and is delimited on a second transverse side by a convex edge (60), via which the side wall merges into a region arranged vertically below the lower water guide surface (61), wherein in particular the side wall section is arranged exclusively below the lower water guide surface (61) and in particular is spaced from the convex edge (60).

9. Toilet according to claim 8, characterized in that the side wall section extends in the vertical direction (Z) over at least 25% of a vertical section, the upper vertical end of which is formed by the convex edge (60) delimiting the lower water guide surface (61) and the lower vertical end of which is formed by the convex edge (80) defining the open end of the drain channel, and / or that the lower water guide surface (61), starting from the rinse water discharge opening (10), runs around a longitudinal center of the rinse chamber (7) lying in the center plane over at least 160°, in particular at least 230°, in particular at least 270°, in particular at least 300°, in particular at least 320° with its circumferential length, wherein in particular the lower water guide surface (61) rises or falls vertically by less than 2 cm, in particular less than 1 cm, in particular less than 0.5 cm over its entire circumferential length, starting from the rinse water discharge opening (10).

10. Toilet according to claim 9, characterized in thatthe lower water guide surface (61) has a width which, starting from the flushing water discharge opening (10), changes over at least the first half of its circumferential length by less than 40%, in particular by less than 30% of its width at the flushing water discharge opening (10), and which, in the second half of its circumferential length, in particular in the angular range between 180° and 360°, in particular in the angular range between 180° and 270°, decreases to less than 50%, in particular less than 30%, in particular less than 20% of its width at the flushing water discharge opening (10) and / or its width averaged over the first half of its circumferential length, and / or that the lower water guide surface (61) has a width which changes over a circumferential section forming 80% of the first half of its circumferential length by less than 10% by a value of its width averaged over this circumferential section,wherein its width in the second half of its orbital length, in particular in the angular range between 180° and 360°, in particular in the angular range between 180° and 270°, decreases to less than 50%, in particular less than 30%, in particular less than 20% of the value of the width averaged over the orbital section.

11. Toilet according to one of the preceding claims, characterized in thatthe toilet body (1) forms a roof-like horizontal projection (13) above the flushing water discharge opening (10), which, in particular starting from the flushing water discharge opening (10), runs around a longitudinal center of the flushing chamber (7) lying in the center plane over at least 180°, in particular at least 230°, in particular at least 250° with its circumferential length, wherein the projection (13) has a width that decreases by less than 30%, in particular less than 20%, over its circumferential length, wherein in particular the projection (13) extends from the lateral water guide surface (62) to the longitudinal center of the flushing chamber (7) lying in the center plane and has a width of at least 1 cm, in particular at least 1.5 cm, over at least 80% of its circumferential length.

12. Toilet according to one of the preceding claims, characterized in thatin only one of the two transverse halves, in particular only in the first transverse half, a rinsing water discharge opening (10) is provided, wherein in particular the rinsing water discharge opening (10) is designed as only a single through opening, wherein in particular the rinsing water discharge opening (10) points towards the front, wherein in particular the rinsing water discharge opening (10) has a horizontal width of at least 20 mm and less than 40 mm and a vertical height of at least 20 mm and at most 40 mm.

13. Toilet according to one of the preceding claims, characterized in that the cross-section of the side wall has a curved profile at least in one longitudinal region, in particular in the side wall section, the curvature of which changes sign at least twice, in particular at least three times.

14. Toilet according to one of the preceding claims, characterized in thatthe side wall, with its cross section running perpendicular to the longitudinal direction (X), initially extends over a first transverse section with a negative curvature around the longitudinal direction (X) to form the convex curvature (100) in its downward course, and extends in a second transverse section adjoining the first transverse section with a positive curvature around the longitudinal direction (X), wherein over a longitudinal extension region of the side wall, in particular of the convex curvature, in the course from rear to front, the transition from the first transverse section to the second transverse section lies further down with increasing distance from the rear end (A).

15. Toilet according to one of the preceding claims, characterized in thatthe side wall in the other of the two transverse halves has another side wall section which extends with its longitudinal extension in the longitudinal direction from its rear longitudinal end to its front longitudinal end and which extends over its entire longitudinal extension from a third transverse plane to a fourth transverse plane, wherein the third and fourth transverse planes each run parallel to the center plane and the fourth transverse plane is arranged closer to the center plane than the third transverse plane, wherein the other side wall section forms a different convex curvature between the third and fourth transverse planes and thus its cross-section has at least in sections a curvature around the longitudinal direction (X) which has a positive value,wherein the curvature of the cross-section in a front longitudinal end section of the other side wall section has a lower value averaged over its course between the third and fourth transverse planes than in a rear longitudinal end section of the other side wall section and / or that the maximum of the curvature of the cross-section in the rear longitudinal end section of the other side wall section is greater than in the front longitudinal end section of the other side wall section.

16. Toilet according to one of the preceding claims, characterized in thatthe flushing channel (200) extends from the flushing connection (2) to the flushing water discharge opening (10) with its channel extension and has a cross-section perpendicular to its channel extension, which decreases at least in a channel extension section adjoining the flushing connection (2) from the flushing connection (2) to the flushing water discharge opening (10) and which remains constant in particular in a channel extension section (201) adjoining this channel extension section, which extends in particular over at least 50%, in particular at least 60% of a total channel extension length, and increases in particular in a channel extension section adjoining the flushing water discharge opening (10), and / or that the flushing channel (200) has a flushing channel wall with a wall thickness that encloses its clear cross-section,wherein the wall thickness in a channel extension section adjacent to the flushing water discharge opening (10) is greater than in a channel extension section adjacent thereto in the direction of the flushing connection (2).

17. Toilet according to one of the preceding claims, characterized in that the toilet has a shower device which is arranged in a recess (5) of the toilet body (1), wherein the recess (5) is arranged above the lower water guide surface (61) and / or opens into the flushing channel (200), wherein the through device rests in a sealing manner on an edge which surrounds the recess (5) and is formed by the toilet body (1), wherein in particular the toilet body (1) behind the flushing chamber (7) has on at least one of its transverse sides a passage (9) in which an actuating element is arranged which is connected to the shower device.

18. Toilet according to one of the preceding claims, characterized in thatthe rinsing water discharge opening (10) and the side wall are designed to correspond to one another in such a way that rinsing water emerging from the rinsing water discharge opening (10) flows in the rinsing chamber (7) in a swirling manner along the side wall, circumferentially around a vertical axis, with at least part of the rinsing water flowing around the vertical axis several times.

19. WC arrangement comprising a WC according to one of the preceding claims and a flushing device which is connected to the flushing connection (2) of the WC, wherein the flushing device comprises an actuating device by means of which it can be actuated to discharge flushing water for flushing the flushing chamber (7) of the WC is.

20. Use of a flushing device for flushing a toilet according to one of claims 1 to 18, characterized in thatthe flushing device is actuated to deliver flushing water to the flushing connection (2) of the toilet, after which the flushing water is delivered through the flushing water delivery opening (10) into the flushing chamber (7) of the toilet at least with a directional component perpendicular to the vertical direction (Z), wherein at least a portion, in particular at least 10%, in particular at least 20%, in particular at least 30%, of the flushing water circulates around a vertical axis running through the flushing chamber (7) starting from the flushing water delivery opening (10) by more than 480°, in particular by more than 540°, in particular by more than 720° in the flushing chamber (7) before it reaches the sewer, wherein this portion of the flushing water runs along an upper side of the convex curvature (100) in an angular range between 270° and 480° during its circulation.

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