TOILET BOWL

Description

[0001] The present invention relates to a toilet bowl. Toilet bowl according to the preamble of claim 1.

[0002] A toilet bowl made of ceramic material is described, for example, in document EP 3 412 840 B1. It comprises a toilet body and, integrated within it, a rimless toilet bowl. The toilet body incorporates a flushing water connection and a flushing water pipe running along one side of the toilet bowl, connected to this connection. This pipe has a flushing water outlet opening that opens into the toilet bowl from the side or front. The flushing water pipe runs in a concealed arc between an outer panel and the wall of the toilet bowl. Flushing water exiting the outlet flows in a circumferential, spiraling downward motion into a siphon and from there into the wastewater system. This spiral downward movement of the flushing water is supported by guide surfaces formed within the toilet bowl.Toilet bowls with a side water outlet are known from US 2015 / 275494 A1 and DE 10 2019 105732 A1. Both incorporate a second water jet for efficient cleaning.

[0003] The object of the present invention is to provide a toilet bowl which is characterized by good flushing performance and low noise.

[0004] The invention relates to a toilet bowl as specified by the features of the independent claim. Further advantageous aspects of the toilet bowl according to the invention will become apparent from the features of the dependent claims.

[0005] The toilet bowl according to the invention comprises a bowl body and a mounting body integrally with it, the bowl body having an inner wall that defines an interior space. The mounting body includes an inlet connection for flushing water and an outlet connection for wastewater. The toilet bowl has an inlet channel for flushing water that communicates with the inlet connection. This inlet channel has an outlet opening that opens into the interior space of the bowl body. The outlet opening is arranged and oriented in a lateral region of the inner wall such that flushing water exiting it flows tangentially along the inner wall in a circumferential and forward direction. A spirally downward-sloping first guide surface is formed on the inner wall, which directs flushing water downwards in a spiral path.A canopy is formed along part of the inner wall's circumference, extending from the outlet opening in the circumferential direction of the inner wall. A second guide surface, extending over part of the inner wall's circumference, is formed on the inner wall of the toilet bowl, directing flushing water along the inner wall's perimeter. This second guide surface is preferably located below the canopy and above the first guide surface. The toilet bowl is made entirely of sanitary ceramic material.

[0006] The inventive lateral tangential introduction of flushing water into the interior of the flushing element, as well as the special design of the inner wall of the flushing element with its roof and the spirally wound first guide surface and the circumferential second guide surface, create a spiral flushing water path that ensures both high flushing performance and very low noise levels. The circumferential second guide surface ensures that at least some of the flushing water is distributed over the entire circumference of the toilet bowl. This ensures that even the upper areas and those furthest from the outlet opening in the circumferential direction of the inner wall are wetted and cleaned with flushing water. Because the toilet bowl is made entirely of ceramic material, without any inserts made of other materials such as...Because the toilet bowl is made of plastic, it is hygienically advantageous, as there are no seams between the ceramic and the insert parts where dirt that is difficult to remove could accumulate.

[0007] According to the invention, the second guide surface extends horizontally or is slightly inclined downwards in the circumferential direction. An angle of inclination in the range of 0.5 degrees to 5 degrees, for example 1 degree to 2 degrees, for the second guide surface has proven advantageous. A slight downward inclination can also support the circumferential flow of rinsing water on the second guide surface.

[0008] According to the invention, the outlet opening is arranged at an angular position in the range of 30 degrees to 100 degrees. The angular position refers to an angular coordinate system defined by a vertical longitudinal center plane, which divides the toilet bowl centrally into a left and a right part, and a coordinate origin axis, which represents the intersection of the longitudinal center plane with a vertical transverse center plane, which divides the interior of the bowl body centrally into a front and a rear part, wherein angular positions in the angular coordinate system are defined as angular distances to a part of the longitudinal center plane located behind the transverse center plane.

[0009] According to the invention, the outlet opening is arranged at an angular position in the range of 40 degrees to 80 degrees, in particular in a range of 50 degrees to 70 degrees, for example approximately 65 degrees. The range of 50 degrees to 70 degrees has proven to be optimal from a fluid dynamics perspective.

[0010] Advantageously, the roofing begins at an angular position in the area of ​​the angular position of the outlet opening and preferably extends to an angular position in the range of 160 degrees to 350 degrees, again referring to the aforementioned angular coordinate system.

[0011] Preferably, the roof extends to an angular position in the range of 180 degrees to 330 degrees, in particular from 200 degrees to 310 degrees, and most preferably from 285 degrees to 300 degrees.

[0012] According to the invention, the second guide surface begins at an angular position in the range of 120 degrees to 250 degrees, preferably 150 degrees to 220 degrees, particularly 160 degrees to 180 degrees, and extends to an angular position in the range of 340 degrees to 400 degrees, preferably 360 degrees to 380 degrees, again referring to the aforementioned angular coordinate system. This ensures that the rinsing water is guided around the entire circumference of the inner wall of the rinsing body.

[0013] According to another aspect, the canopy has a maximum radial depth in the range of 1-5 cm, preferably 2-4 cm, with the radial depth preferably decreasing continuously in the circumferential direction of the inner wall. In particular, an end section of the canopy also decreases continuously. This ensures the canopy's functionality. Furthermore, this design contributes to the toilet bowl's aesthetic appeal. The radial depth of the canopy is preferably constant except for a continuously decreasing end section. However, the radial depth of a canopy can also vary, for example, by being wider in a front area of ​​the bowl.

[0014] According to another aspect, the second guide surface has a maximum radial depth in the range of 0.5–4 cm, preferably 1–3 cm, with the radial depth preferably decreasing continuously in the circumferential direction of the inner wall. This ensures that all flushing water guided on the second guide surface is directed downwards continuously. The continuous design of the second guide surface also contributes to a more aesthetically pleasing appearance of the toilet bowl. The radial depth of the second guide surface is preferably constant except for a continuously decreasing end region.

[0015] According to another aspect, a siphon is formed in the lowest part of the toilet bowl, which connects the interior of the bowl body to the outlet connection via a drainage channel formed in the mounting body.

[0016] According to another aspect, the mounting body has a flat rear mounting surface. When installed, the toilet bowl is mounted to a wall via this mounting surface. The inlet and outlet connections are preferably positioned a maximum of 8 cm inwards from the flat mounting surface of the mounting body. This allows for installation tolerances and provides space for components such as seals. Certain standards require a minimum distance of approximately 15 mm to the rear wall. Accordingly, the inlet connection is preferably positioned 1-8 cm, and even more preferably 3-7 cm, inwards from the rear mounting surface.

[0017] According to another aspect, the inlet channel comprises a first and a second channel section, with the first channel section being formed in the mounting body and the second channel section in the curved inner wall of the bowl body. The second channel section is formed on the one hand by an elongated cavity in the inner wall and on the other hand by a cover-like trim piece made of sanitary ceramic material. This trim piece covers the cavity against the interior of the bowl body and is seamlessly integrated into the inner wall. In this way, a curved channel section within the inner wall is relatively easy to manufacture.

[0018] According to another aspect, the first, tubular channel section has a preferred length of 10-20 cm, preferably 12-15 cm. The length of the second, curved channel section extends to the outlet opening.

[0019] The first, tubular channel section has a preferred diameter of 30-40 cm, for example 34 cm. The second, curved channel section preferably has a rectangular shape and a preferred height of 30-40 cm, for example 34 cm. The height of the second channel section is preferably approximately the same as the diameter of the first channel section. This allows flushing water to flow through the flushing channel as freely as possible, and the toilet bowl retains a simple shape in this area as well.

[0020] Further advantageous aspects of the invention will become apparent from the following description of an exemplary embodiment of the toilet bowl with the aid of the drawing. The drawing shows: Fig. 1 is an oblique view of the toilet bowl from the front above; Fig. 2 is a rear view of the toilet bowl in the direction of arrow 300. Fig. 1 ; Fig. 3 a view of the toilet bowl from above; Fig. 4 a section through the toilet bowl along a vertical section plane IV-IV of the Fig. 1 ; Fig. 5 a section through the toilet bowl along a vertical sectioning plane VV of the Fig. 1 ; Fig. 6 a sketch to illustrate various construction details of the toilet bowl; Fig. 7 the toilet bowl in an intermediate stage of manufacture without a trim piece; and Fig. 8 an oblique view of a trim piece.

[0021] The following convention applies to the description below: If reference symbols are indicated in a figure for the purpose of graphical clarity, but are not mentioned in the immediately corresponding descriptive section, reference is made to their explanation in preceding or subsequent descriptive sections. Conversely, to avoid graphical clutter, reference symbols that are less relevant for immediate understanding are not included in all figures. For these, reference is made to the remaining figures. Position and direction indications such as vertical, horizontal, top, bottom, front, back, side, etc., refer to the normal mounting position of the toilet bowl on a vertical wall.

[0022] The Figuren 1 und 2 Figure 1 illustrates the general structure of the toilet bowl according to the invention. The toilet bowl, designated as a whole by 100, comprises a front bowl body 101 and a rear mounting body 102 with a flat mounting surface 103. In practical use, the toilet bowl 100 with its mounting body 102 is mounted on a typically vertical wall, with the mounting surface 103 in direct contact with the wall. An annular, flat bearing surface 104, designated by 104 and forming the upper edge of the toilet bowl 100, runs horizontally.

[0023] The bowl body 101 and the mounting body 102 are formed together in one piece from a sanitary ceramic material and contain no parts or inserts made of other materials, in particular no plastic flush distributor. The ceramic material is scratch- and acid-resistant and easy to clean. The absence of plastic parts is advantageous from a hygienic point of view.

[0024] The mounting body 102 has two mounting openings 105 for attaching the toilet bowl to a wall. Furthermore, the mounting body 102 has an inlet connection 110 and an outlet connection 115. The inlet connection 110 is for connecting to a building-provided flushing water supply pipe (not shown), and the outlet connection 115 is for connecting to a building-provided wastewater drainage pipe (also not shown). The inlet connection 110 and the outlet connection 115 are positioned slightly inwards (forwards) relative to the flat mounting surface 103 of the mounting body 102. This is shown in the sectional view of the Fig. 4 The inward offset designated 211 is a few centimeters, preferably more than 15 mm and a maximum of about 8 cm, and creates assembly tolerance and space for seals to the wastewater discharge pipe.

[0025] The bowl body 102 of the toilet bowl 100 is double-walled in its front and side regions in a manner known per se and has an outer wall 106 and an inner wall 107, wherein the inner wall 107 is connected to the outer wall 106 at the top of the toilet bowl by a substantially flat annular surface, which forms the aforementioned support surface 104. The double-walled design of the bowl body 102 is particularly evident in the sectional view of the Fig. 5 recognizable.

[0026] The interior 109 of the toilet bowl 100 is generally designed as a downwardly narrowing funnel, wherein the inner wall 107 of the toilet bowl forming the interior runs at different gradients along the inner circumference of the toilet bowl and has various additional features, which will be discussed in more detail later.

[0027] In the lowest area of ​​the toilet bowl 100, a siphon 116 is formed, which is formed by the lowest sections of the inner wall 107, a curved bottom part 108 of the toilet bowl and by a drainage channel 117 formed in the mounting body 102 of the toilet bowl and connects the interior 109 of the toilet bowl 100 with the outlet connection 115.

[0028] For a better understanding of the explanations below, please first refer to... Fig. 3 reference is made to an angular coordinate system to which the position and extent ranges of various design details of the toilet bowl are related.

[0029] According to Fig. 3 A longitudinal center plane 201, vertical and perpendicular to the rear mounting surface 103 or to the wall on which the toilet bowl 100 is mounted in use, divides the toilet bowl 100 into a left and a right half, with left and right referring to the viewing direction from the front to the rear of the toilet bowl.

[0030] A vertical and parallel transverse center plane 202 to the rear mounting surface 103 or to the wall on which the toilet bowl 100 is mounted in use divides the interior of the toilet bowl 100 into a front and a rear part, with front and rear again referring to the direction of view from the front to the back of the toilet bowl.

[0031] A vertical intersection line of the two mid-planes 201 and 202 forms a coordinate origin axis, labeled 203, for various angle measurements, which will be discussed in more detail later. The angles, e.g., the one in Fig. 3 The angles 205 shown are each measured clockwise from the rear part of the longitudinal center plane 201.

[0032] The two middle planes 201 and 202 divide the interior of the toilet bowl 100 or the inner wall 107 thereof, viewed from above, into four quadrants, with the first quadrant covering the angle range 0 degrees-90 degrees, the second quadrant the angle range 90 degrees-180 degrees, the third quadrant the angle range 180 degrees-270 degrees and the fourth quadrant the angle range 270 degrees-360 degrees or 270 degrees-0 degrees.

[0033] Of course, it is also possible to design the toilet bowl as a mirror image with respect to the longitudinal center plane, in which case all angles would be measured counterclockwise.

[0034] How best to interpret the cross-sectional view of the Fig. 4 and the view of Fig. 6 As can be seen, the toilet bowl 100 has an inlet channel for flushing water, composed of a first and a second channel section 111 and 112, respectively. The first channel section 111 has the shape of a straight pipe and extends straight forward from the inlet connection 110 to just before the rear area (first and fourth quadrants) of the inner wall 107 of the toilet bowl. The length of the tubular first channel section 111 is approximately 10–20 cm, preferably 12–15 cm. The second channel section 112 is formed in the inner wall 107 of the toilet bowl and follows its curvature in the circumferential direction. The second channel section 112 is located at least for the majority of its length in the first quadrant and has an outlet opening 113 at its end, which opens into the interior 109 of the toilet bowl.The first, straight channel section 111 runs essentially horizontally, while the second, curved channel section 112 runs slightly downwards, so that the outlet opening 113 is somewhat lower than the first channel section 111. Flushing water supplied through the inlet connection 110 flows through the two interconnected channel sections 111 and 112 into the interior 109 of the toilet bowl 100. The outlet opening 113 is designed and oriented such that the flushing water exiting it flows tangentially and (initially) essentially horizontally along the inner wall 107 of the toilet bowl in a forward direction. The angular position of the outlet opening 113 with respect to the angular coordinate system is shown in the example of [reference missing]. Fig. 3 The angle is approximately 65 degrees. The height of the second, curved channel section 112 is preferably about the same as the diameter of the first channel section, so that the flushing water can flow through the inlet channel as freely as possible.

[0035] The bowl body 102 does not have a traditional rim. This means that the inner wall 107 does not have a downward-facing undercut along its upper edge, which is usually difficult to clean.

[0036] In the circumferential direction of the toilet bowl, and at least for the most part downstream of the outlet opening 113, an inwardly projecting canopy 120 is formed on the inner wall 107. This canopy prevents flushing water from splashing upwards over the support surface 104 or the upper rim of the toilet bowl. The canopy 120 begins at the angular position of the outlet opening 113, which is also the case at an angle of approximately 65 degrees, depending on the angle. In this example, the beginning of the canopy 120 is directly adjacent to the angular position of the outlet opening 113. However, the beginning of the canopy 120 and the outlet end of the second channel section 112 can also overlap slightly in the circumferential direction; that is, the beginning of the canopy 120 can also be located in front of the outlet opening 113 in the circumferential direction. Preferably, the canopy 120 is never positioned downstream of the outlet opening 113 with respect to any angular position.The end of the roof 120 is located at an angular position of approximately 295 degrees. The radial depth 212 of the roof 120 (with respect to the coordinate origin axis 203) is... Fig. 4 The angle can remain constant across its entire angular range, but preferably decreases towards the end, meaning the roof becomes less pronounced towards its end. The maximum radial depth of the roof is approximately 25 mm.

[0037] The inner wall 107 of the toilet bowl 100 has a first guide surface 122 that extends almost completely around the bowl. This surface is relatively flat, i.e., only slightly inclined, in the first quadrant, and its steepness increases continuously up to the fourth quadrant. Furthermore, the first guide surface 122 lies lower in the second quadrant than in the first, lower in the third than in the second, and lower in the fourth than in the third. The first guide surface 122 thus gives the inner wall 107 of the toilet bowl the shape of a descending spiral, which causes flushing water flowing along the first guide surface of the inner wall to move downwards in a spiral path. The varying steepness of the first guide surface 122 around the circumference is best seen in the cross-sectional view of the Fig. 5 recognizable.

[0038] On the inner wall 107 of the toilet bowl, a shoulder-like second guide surface 124 is formed, extending slightly below the canopy 120 and above the guide surface 122. This second guide surface 124 is largely circumferential and shoulder-like. Viewed circumferentially, the beginning of the second guide surface 124 is located at an angular position of approximately 170 degrees. The second guide surface 124 and the canopy 120 overlap circumferentially. The end of the second guide surface 124 is located at an angular position of approximately 360 degrees. The radial depth 213 of the second guide surface 124 (with respect to the origin axis 203) can be constant circumferentially, but preferably it decreases, particularly towards the end of the second guide surface 124, preferably continuously; that is, the second guide surface 124 becomes narrower towards its end. The maximum radial depth of the second guide surface 124 is approximately 13 mm.The second guide surface 124 can extend horizontally along its entire length, but preferably it is inclined slightly downwards towards its end, preferably at an angle of 1 degree. The circumferential second guide surface 124 ensures that flushing water does not immediately flow downwards along the inner wall 107 of the toilet bowl, but rather that at least a portion of the flushing water is distributed over the entire circumference of the toilet bowl. This ensures that even the upper areas of the inner wall 107, and those furthest circumferentially from the outlet opening 113, are wetted and cleaned with flushing water.

[0039] The rear portion of the inner wall 107 of the toilet bowl 100, located in the area of ​​the first and fourth quadrants, forms an odor barrier with its lowest point. This barrier is designed such that the transition 118 into the siphon 116 has a round, specifically circular, cross-section. This ensures that the swirling water generated in the toilet bowl is carried into the siphon, significantly improving the flushing performance.

[0040] Another essential feature of the toilet bowl according to the invention is that it is manufactured entirely from sanitary ceramic material in one piece and therefore has no inserts made of other materials, such as plastic flush water distributors. This is advantageous from a hygienic point of view, but due to the curved second channel section 112 of the flush water inlet channel formed in the inner wall 107, it places higher demands on the manufacturing technology.

[0041] According to another aspect of the invention, this problem is solved by first forming the second channel section 112 as an inwardly open elongated cavity in the inner wall 107 of the toilet bowl ( Fig. 7 ) and that the inwardly open side of this cavity is then covered by a lid-like garnish piece 130 ( Fig. 8 The trim piece is made of sanitary ceramic material. It is fitted precisely into a correspondingly shaped recess 131 in the inner wall 107. The trim piece 130 is shaped in such a way that it fits seamlessly into the inner wall 107 of the toilet bowl and conforms to its shape. After the trim piece 130 is attached, the toilet bowl, together with the trim piece, is dried, glazed, and fired. Unlike what is shown in the figures, the trim piece is then no longer visually recognizable as a separate element.

[0042] The inventive design of the flushing water supply and the inner wall of the toilet bowl, including the canopy, guide surface, and shoulder, results in a particularly efficient flushing process with minimal noise. The fact that the toilet bowl is made entirely of ceramic material is advantageous from a hygienic point of view.

[0043] The invention has been explained above using one embodiment, but it is not intended to be limited to this embodiment. Rather, numerous modifications are conceivable for those skilled in the art without deviating from the teaching of the invention. For example, the inner cross-section of the toilet bowl can be circular instead of oval.

Claims

1. Toilet bowl (100) comprising a bowl body (101) and a mounting body (102) integrally formed therewith, wherein the bowl body (101) has an inner wall (107) that defines an interior space (109), wherein an inlet connection (110) for flush water and an outlet connection (115) for wastewater are formed in the mounting body (102), wherein the toilet bowl (100) comprises an inlet channel (111, 112) for flush water communicatively connected to the inlet connection (110), which inlet channel has an outlet opening (113) that opens into the interior space (109) of the bowl body (101), wherein the outlet opening (113) is arranged and oriented in a lateral portion of the inner wall (107) such that flush water emerging from it during use flows tangentially along the inner wall (107) in a circumferential direction and toward the front, wherein a first guide surface (122) extending spirally downward is formed on the inner wall (107), which guides flush water downward along a spiral path, wherein a canopy (120) is formed on the inner wall (107) along a portion of its circumference, which is arranged in the circumferential direction of the inner wall (107) adjacent to the outlet opening (113), wherein, with respect to an angular coordinate system defined by a vertical longitudinal center plane (201) which divides the toilet bowl in the middle into a left and a right portion, and by a coordinate origin axis (203), which represents the line of intersection of the longitudinal center plane (201) with a vertical transverse center plane (202), which transverse center plane (202) divides the interior space (109) of the bowl body (101) in the middle into a front portion and a rear portion, wherein angular positions in the angular coordinate system are defined as angular distances from a portion of the longitudinal center plane (201) located behind the transverse center plane (202), the outlet opening (113) is arranged at an angular position in the range of 40 degrees to 80 degrees, wherein a second guide surface (124) is formed on the inner wall (107) of the toilet bowl, which extends over a portion of the circumference of the inner wall (107) and which directs flush water along the circumference of the inner wall (107), wherein the second guide surface (124) extends horizontally or slightly downward in the circumferential direction, and wherein the toilet bowl (100) is made entirely of a sanitary ceramic material, characterized in that the second guide surface (124) begins at an angular position in the range of 150 degrees to 220 degrees and extends to an angular position in the range of 340 degrees to 400 degrees.

2. Toilet bowl according to claim 1, wherein the second guide surface (124) extends horizontally in the circumferential direction or is inclined downward by 0.5 degrees to 5 degrees.

3. Toilet bowl according to claim 1, wherein, with respect to the angular coordinate system, the outlet opening (113) is disposed at an angular position in the range of 50 degrees to 70 degrees, for example at 65 degrees.

4. Toilet bowl according to any one of claims 1 to 3, wherein, with respect to the angular coordinate system, the canopy (120) begins at an angular position within the range of the angular position of the outlet opening (113) and extends to an angular position in the range of 180 degrees to 330 degrees, in particular from 200 degrees to 310 degrees, and most preferably from 285 degrees to 300 degrees.

5. Toilet bowl according to any one of claims 1 to 4, wherein, with respect to the angular coordinate system, the second flow surface (124) begins at an angular position in the range of 160 degrees to 180 degrees.

6. Toilet bowl according to any one of claims 1 through 5, wherein, with respect to the angular coordinate system, the second guide surface extends to an angular position in the range of 360 degrees to 380 degrees.

7. Toilet bowl according to any one of claims 1 to 6, wherein the canopy (120) has a maximum radial depth (u) in the range of 1 to 5 cm, preferably 2 to 4 cm, wherein the radial depth (u) preferably decreases in the circumferential direction of the inner wall (107).

8. Toilet bowl according to any one of claims 1 to 7, wherein the second guide surface (124) has a maximum radial depth (s) in the range of 0.5 to 4 cm, preferably 1 to 3 cm, wherein the radial depth (u) preferably decreases in the circumferential direction of the inner wall (107).

9. Toilet bowl according to any one of claims 1 to 8, wherein the mounting body (102) has a flat rear mounting surface (103) and wherein the inlet connection (110) and the outlet connection (115) are arranged with a maximum inward offset of 8 cm relative to the flat mounting surface (103) of the mounting body (102).

10. Toilet bowl according to any one of claims 1 to 9, in which the inlet channel comprises a first and a second channel section (111, 112), wherein the first channel section (111) is formed in the mounting body (102) and the second channel section (112) is formed in the inner wall (107) of the bowl body (101).

11. Toilet bowl according to claim 10, wherein the second channel section (112) is formed by an elongated cavity formed in the inner wall (107) and by a lid-like trim piece (130) made of a sanitary ceramic material, which trim piece (130) is seamlessly integrated into the inner wall (107) and covers the cavity toward the interior space (109) of the bowl body (101).