Outlet pipe bend
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- GEBERIT INT AG
- Filing Date
- 2024-07-05
- Publication Date
- 2026-05-20
AI Technical Summary
Conventional outlet elbows in sanitary systems experience fluidic losses due to rotation-like movements in the second pipe section during rinsing, which reduces rinsing performance.
An outlet bend with a deflection section and guide walls that deflect the flow medium at an angle of 80 to 100 degrees, minimizing fluidic losses by guiding the medium through the bend without rotation, and allowing for installation in various orientations to enhance hydraulic drainage performance.
The solution effectively minimizes fluidic losses and increases hydraulic drainage performance by preventing rotation of the flow medium, improving rinsing efficiency across different installation positions.
Smart Images
Figure EP2024068971_16012025_PF_FP_ABST
Abstract
Description
[0001]F07337 1 TITLE OUTLET BEND TECHNICAL FIELD The present invention relates to an outlet bend for a sanitary article, in particular for a toilet bowl or a urinal, according to claim 1, a use of the outlet bend according to claim 18 and a sanitary arrangement according to claim 17. PRIOR ART Outlet bends are known from the prior art. Outlet bends are pipe pieces which are arranged in a wastewater line which carries wastewater away from a sanitary article. Such outlet bends have a first pipe section and a second pipe section which is usually at an angle of 90° to the first pipe section. The first pipe section typically provides an insertion area into which a pipe piece which is connected to the sanitary article can be inserted.If the sanitary article is in the form of a toilet, the outlet bend is often installed such that the second pipe section is inclined at an angle to the vertical direction. When the flush water is introduced into the second pipe section, a rotation-like movement can occur in the second pipe section, which leads to flow losses. The flushing performance is thereby minimized. DESCRIPTION OF THE INVENTION Starting from this prior art, the object of the invention is to provide an outlet bend which overcomes the disadvantages of the prior art. In particular, the present invention is based on the object of providing an outlet bend with improved hydraulic properties. These and other objects are achieved by the outlet bend according to claim 1. Accordingly, the outlet bend serves to discharge a multi-phase flow medium, in particular F07337 2 consisting of water, solids and air.The outlet bend comprises a first pipe section extending along a first central axis, a deflection section adjoining this first pipe section and having an outer deflection side and an inner deflection side, which deflection section extends along a deflection axis and deflects the flow medium with respect to the first pipe section, and a second pipe section adjoining the deflection section and extending along a second central axis. The first central axis and the second central axis run at an angle in the range of 80 to 100°, in particular at an angle of 90°, to one another. In the installed position, the first central axis runs at a right angle to the vertical direction. The outlet bend further comprises at least one guide wall extending into the cross-section of the outlet bend and having at least one side surface. The guide wall is arranged in the deflection section on the outer deflection side and / or in the second pipe section.Depending on the installation position of the outlet bend, the at least one guide wall has different advantages. Basically, the at least one guide wall is arranged in such a way that the flow medium is guided through the outlet bend with minimal flow losses. If the outlet bend is installed in such a way that the second central axis runs in the vertical direction, the at least one guide wall provides guidance for the flow medium in the vertical direction due to its orientation. If the outlet bend is installed in such a way that the second central axis runs at an angle to the vertical direction, the at least one guide wall provides guidance for the flow medium such that the sloshing of the flow medium in the outlet bend against the vertical direction is prevented by the guide wall. This means that there is no rotation or partial rotation of the flow medium around the deflection axis orthe second central axis, whereby the flow losses can be minimized. The first central axis and the second central axis run along a geometric straight line and the deflection axis runs along a geometric arc, in particular along a circular arc. The outlet bend also has the advantage that it can be installed in various F07337 3 installation situations. In particular, in an installation situation in which the second central axis is inclined at an angle to the vertical direction, the hydraulic discharge capacity can be increased compared to conventional outlet bends. Preferably, the at least one guide wall is arranged exclusively on the outside of the deflection and not on the inside of the deflection. Viewed in the installed position, the outlet bend is preferably positioned such that the outside of the deflection lies largely above the inside of the deflection with respect to the vertical direction.The at least one guide wall preferably has a front end and a rear end. In a first variant, in which the guide wall is arranged in the deflection section and in the second pipe section, the front end lies in the deflection section and the rear end lies in the second pipe section. Preferably, according to the first variant, the front end lies directly at the transition from the first pipe section to the deflection section. Preferably, the rear end is at a distance from the transition from the first pipe section to the deflection section. Preferably, the distance corresponds approximately to the pipe diameter in the second pipe section. In the first variant, the at least one guide wall extends exclusively from the deflection section into the second pipe section. In a second variant, in which the guide wall is arranged in the deflection section, the front end and the rear end lie in the deflection section.In a third variant, in which the guide wall is arranged in the second pipe section, the front end and the rear end lie in the second pipe section. In all variants, the at least one guide wall preferably does not extend into the first pipe section. Preferably, the at least one side surface is oriented in the direction of the deflection axis or in the direction of the second central axis. Preferably, the at least one side surface runs parallel or at an angle to a central plane running through the two central axes. The at least one side surface is preferably designed as a flat surface. Preferably, the at least one guide wall has the shape of a thin wall. This means that the two side surfaces lie close to one another. The shape of a thin wall has the advantage that the cross-section of the pipe bend is not excessively reduced in the region in which the guide wall is arranged.It also makes production easier. The wall thickness of the guide wall is preferably constant over the length and height of the guide wall. This means that the distance between the two side surfaces is constant. The wall thickness of the guide wall is preferably in the range from 0.5 to 8 millimeters, in particular in the range from 1 to 6 millimeters. The wall thickness of the guide wall is preferably smaller than the wall thickness of the outlet bend in the region of the two pipe sections or in the region of the deflection section. These ranges are particularly advantageous if the outlet bend is made of plastic. If the outlet bend is made of ceramic, the wall thicknesses are preferably greater. Preferably, at least two, in particular exactly two, of the said guide walls are arranged at a distance from one another. The guide walls are preferably of the same type or identical to one another.This has the advantage that the outlet bend is symmetrical, which allows installation at different angular positions between the vertical direction and the second central axis. The outlet bend can therefore be installed at an angle to one side to the vertical direction or at an angle to the other side to the vertical direction. The distance between the two guide walls is preferably in a range of 25% to 45% of the diameter of the second pipe section. The at least two guide walls are preferably arranged symmetrically to one another with respect to a central plane running through the two F07337 5 central axes and are each at the same distance from said central plane. The at least one guide wall preferably extends from an inner surface of the deflection section or from an inner surface of the second pipe section into the interior of the outlet bend.Preferably, the at least one guide wall is connected to the inner surface of the deflection section or the inner surface of the second pipe section by a foot section. The foot section is preferably rounded with a curve. In one variant, the curve is preferably a concave curve. This means that the cross-section of the guide wall increases in the region of the curve. In another variant, however, the curve is concave on one side of the guide wall and convex on the other side of the guide wall. Preferably, the convex curve is on the side of the guide wall that faces away from the other guide wall and the concave curve is on the side of the guide wall that faces towards the other guide wall. However, the foot section can also run parallel to the side surfaces of the at least one guide wall.In one variant, the at least one guide wall is in contact with the respective inner surface over its entire length. In another variant, the at least one guide wall is in contact with the respective inner surface over at least a first partial region of its entire length and the at least one guide wall is offset from the respective inner surface over at least a second partial region such that a gap is created between the guide wall and the respective inner surface. The gap is preferably located in the region of the rear end of the guide wall. Here, the gap has the advantage that when cutting or shortening the second pipe section in an area where the guide wall is present, the guide element can be left standing and good accessibility for a welding mirror can still be provided. The guide wall preferably has two side surfaces that are spaced apart from one another.F07337 6 In a preferred embodiment, the two side surfaces preferably run parallel to one another. The two side surfaces preferably run parallel to a center plane running through the two center axes. In an alternative embodiment, the two side surfaces run at an angle to one another such that the distance between the two side surfaces decreases with increasing distance from the inner surface of the second pipe section or the deflection section. In the interior of the second pipe section or the deflection section, the side surfaces merge into one another at an end face. In other words, in this alternative embodiment, the guide wall is V-shaped, with the two legs of the letter V passing through the side surfaces. The angle is preferably between 10° and 45°. The at least one guide wall preferably has an end face which is preferably rounded with a curve.Preferably, a plurality of guide walls are arranged next to one another and spaced from one another. Particularly preferably, two adjacent guide walls are connected to one another by a curved wall. The curvature of the wall corresponds to the curvature of the deflection section. The wall extends from the end face of the guide wall closer to a center plane running through the two center axes to the foot region of the guide wall further away from the center plane. Preferably, the height of the at least one guide wall increases continuously at right angles from an inner surface of the deflection section in a first curved section of the deflection section and is essentially constant in a second curved section of the deflection section. Preferably, the first curved section extends over a length range of one third to one half of the total length of the deflection section.In other words, the height of the rib increases continuously from the front end, thereby creating a structure that only slightly changes the inlet area into the deflection section, thus preventing blockages in this area. The formation of the at least one guide wall in the deflection section has the advantage that pipe cleaning devices can be easily pushed into the deflection section F07337 7 via the first pipe section. Preferably, the at least one guide wall in the second pipe section has a substantially constant height over a first partial section, viewed at right angles to an inner surface of the second pipe section. In a second partial section, the at least one guide wall extends at an angle in the range of 35° to 65°, in particular in the range of 40° to 50°, to the inner surface, so that the height of the guide wall continuously decreases in the second partial section.The formation of at least one guide wall in the second pipe section has the advantage that pipe cleaning devices can easily slide from the second pipe section into the area of the guide walls after pipe cleaning. A "substantially constant height" is understood to mean a height that, for manufacturing reasons, is provided with a slight draft for demolding. Preferably, the at least one guide wall in the deflection section and / or in the second pipe section, viewed at right angles to the aforementioned inner surfaces, has a maximum height of 30% of the diameter of the deflection section and / or the second pipe section.Preferably, an angle, viewed in cross-section transverse to the deflection axis and / or transverse to the second central axis, between the at least one side surface and a tangent extending tangentially to the inner surface of the deflection section and / or the second pipe section and through the intersection point between the respective side surface and the respective inner surface, is in the range of 40° to 90°. The described embodiment with the minimum angle of 40° has the advantage that jamming of solids between the inner surface and the side surface can be prevented. The angle also changes depending on the position of the respective guide wall. If the guide wall lies on the central plane, the angle is approximately 90°. With increasing distance from the central plane, the angle becomes smaller. If several guide surfaces are arranged, each of the guide surfaces has a different angle.Preferably, as seen in a center plane running through the two center axes, the deflection section on the outer deflection side runs in an arc, F07337 8 in particular in the shape of a circle. As seen in a center plane running through the two center axes, the deflection section on the inner deflection side is designed as a deflection edge. Preferably, the at least one guide wall is formed on the inner surface of the deflection section and the inner surface of the second pipe section. Alternatively, the at least one guide wall can be formed on an insert which can be inserted into the deflection section and the second pipe section. Preferably, the first pipe section has a stop surface which, as seen in the flow direction of the flow medium, is arranged in front of the deflection section and in front of the at least one guide wall. The stop surface is preferably designed as a circular ring and lies on a shoulder in the first pipe section.The stop surface is preferably located at a distance from the transition of the first pipe section into the deflection section. Particularly preferably, the first pipe section and / or the second pipe section have a cylindrical, in particular a circular cylindrical, cross-section. The outgoing bend, i.e. the first pipe section, the deflection section and the second pipe section, are preferably formed as a single piece. Particularly preferably, the deflection pipe section is produced from plastic, in particular by a blow molding process or an injection molding process. Preferably, said pipe sections have a partial region which is cylindrical. One or both of the cylindrical partial regions can be designed as a sleeve for inserting a pipe or for welding a pipe on. One or both of the cylindrical partial regions can be designed as a jacket surface for projecting into a sleeve of a pipe or for welding a pipe on.In use, the flow medium flows in the outlet bend in such a way that it does not fill the cross-section completely, but essentially half or less. This is a partially filled pipe section which can be used in a partially filled pipe system. F07337 9 The diameters of the first pipe section and / or the second pipe section are preferably in the range from 75 to 110 millimeters. In a first type of use of an outlet bend as described above in connection with a sanitary article, such as a toilet bowl or a urinal, the first central axis runs at right angles to the vertical direction and the second central axis runs in the vertical direction when the outlet bend is in the installed position.The orientation of the outlet bend is such that the flow medium flows through the first pipe section into the deflection section and is channeled in the deflection section by the at least one guide wall in the direction of the vertical direction. In a second type of use of an outlet bend as described above in connection with a sanitary article, such as a toilet bowl or urinal, the first central axis runs at a right angle to the vertical direction and the second central axis runs at an angle inclined to the vertical direction, as seen in the installed position of the outlet bend. The orientation of the outlet bend is such that the flow medium flows through the first pipe section into the deflection section and is prevented from flowing against the vertical direction in the deflection section by the at least one guide wall and is deflected in the direction of the second pipe section.A sanitary arrangement comprises an outlet bend as described above and a sanitary article, such as a toilet bowl or a urinal, with a connection area for connecting the outlet bend or a connection area for connecting a pipe section which then flows into the outlet bend. In a first variant, as seen in the installed position of the outlet bend, the first central axis runs at right angles to the vertical direction and the second central axis runs in the vertical direction. The orientation of the outlet bend is such that the flow medium flows through the first pipe section into the deflection section and is channeled in the deflection section by the at least one guide wall in the direction of the vertical direction. In a second variant, as seen in the installed position of the outlet bend, the first central axis runs at right angles to the vertical direction and the second central axis runs at an angle inclined to the vertical direction.The orientation of the outlet bend is such that the flow medium flows through the first pipe section into the deflection section and in the deflection section is prevented from flowing against the vertical direction by the at least one guide wall and is deflected in the direction of the second pipe section. F07337 10 This sanitary arrangement has the advantage that the guide walls are comparatively close to the sanitary article when installed. In the unlikely event of a blockage, the interior of the outlet bend is easily accessible when the sanitary article is removed. Preferably, the outlet bend is in direct and immediate contact with the sanitary article. Alternatively, a pipe section is provided between the outlet bend and the sanitary article. The pipe length of the pipe section is preferably in the range of 50 to 200 millimeters. This means that the first pipe section of the deflection pipe section is at a distance from the sanitary article by this pipe length.Further embodiments are specified in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS Preferred embodiments of the invention are described below with reference to the drawings, which are for illustrative purposes only and are not to be interpreted as restrictive. The drawings show: Fig. 1 a side view of a preferred embodiment of an outlet bend of the present invention; Fig. 2 a perspective sectional view of the outlet bend according to Figure 1 in a first variant of an installation position; Fig. 3 a sectional view of the outlet bend according to Figures 1 and 2; Fig. 4 a sectional view transverse to the central axis through the second pipe section of the outlet bend according to the preceding figures along the section line IV-IV according to Figure 1; Fig. 5 a sectional view through the central axis through the first and second pipe section of the outlet bend according to the preceding figures along the section line VV according to Figure 1; Fig.6 shows a perspective sectional view of the outlet bend according to the preceding figures in a first variant of an installation position; Fig. 7 shows a perspective sectional view of an outlet bend according to a further embodiment of the present invention; and Fig. 8 shows a further sectional view of the further embodiment according to Fig. 7. F07337 11 DESCRIPTION OF PREFERRED EMBODIMENTS Figures 1 to 6 show a particularly preferred embodiment of an outlet bend 1 according to the present invention. The outlet bend 1 serves to discharge a multi-phase flow medium, which is composed in particular of water, solids and air. The outlet bend 1 is located in a wastewater pipe between a sanitary article and another pipe. With the outlet bend 1, the flow medium is deflected from a horizontal flow direction into the vertical direction or at an angle to the vertical direction.The outgoing bend 1 comprises a first pipe section 2, a deflection section 3 adjoining this first pipe section 2 and a second pipe section 6 adjoining the deflection section 3. The first pipe section 2, the deflection section 3 and the second pipe section 6 form the pipe section 1 and define an interior space 14 through which the flow medium flows. The flow medium flows along a flow direction F from the first pipe section 2 through the deflection section 3 and finally through the second pipe section 6. The first pipe section 2 extends along a first central axis M1. The first central axis M1 extends along a straight line. The deflection section 3 has a deflection outer side 4 and a deflection inner side 5. The deflection section 3 extends along a deflection axis U, which is arc-shaped, in particular circular.In the deflection section 3, the flow medium is deflected with respect to the first pipe section 2. The second pipe section 6 extends along a second central axis M2. The second central axis M2 extends along a straight line. The first central axis M1 and the second central axis M2 are at an angle of 90° to one another. The deflection axis U connects the first central axis M1 and the second central axis M2. Viewed in the installed position, the first central axis M1 runs horizontally or at right angles to the vertical direction L. From the figures, it can be seen that, viewed in a central plane ME running through the two central axes M1, M2, the deflection section 3 runs in an arc shape, in particular in the shape of a circle, on the deflection outer side 4 with a bend 23; and that the deflection section 3 is designed as a deflection edge 24 on the deflection inner side 5.F07337 12 From the sectional views of Figures 2 to 6, it can further be seen that the outgoing bend 1 furthermore has at least one guide wall 7 extending into the cross section of the outgoing bend 1, said guide wall having a first side surface 8 and a second side surface 9. The at least one guide wall 7 extends in the interior 14 in such a way that the flow medium is guided by the at least one guide wall 7. The guide wall 7 is arranged in the deflection section 3 on the deflection outer side 4 and in the second pipe section 6. In other words, the guide wall 7 extends from the deflection section 3 into the second pipe section 6. The side surfaces 8, 9 are oriented in the direction of the second central axis M2. Other embodiments, in which the guide wall is arranged either only in the deflection section 3 or only in the second pipe section 6, are also conceivable.The at least one guide wall 7 extends from an inner surface 12 of the deflection section 3 and from an inner surface 13 of the second pipe section 6 into the interior 14 of the outlet bend 1. The at least one guide wall 7 is preferably firmly formed on the respective inner surface 12, 13. The at least one guide wall 7 adjoins the inner surface 12 of the deflection section 3 and the inner surface 12 of the second pipe section 6 with a foot section 15. As shown in the figures, the foot section 15 can run parallel to the side surfaces of the at least one guide wall 7. The foot section 15 can alternatively be rounded with a curve 16. Figure 2 shows that the at least one guide wall 7 has a front end 10 and a rear end 11. The front end 10 lies in the deflection section 3 and the rear end 11 lies in the second pipe section 6.The front end 10 is located here essentially directly at the transition area 28 from the first pipe section 2 to the deflection section 3. Alternatively, the front end 10 can also be arranged offset from this transition area 28 in the deflection section 3. The rear end 11 is located at a distance from the transition area from the deflection section 3 to the second pipe section 6. The side surfaces 8, 9 are designed as flat side surfaces. In the embodiment shown, the side surfaces 8, 9 run parallel to one another. The guide wall 7 has a constant wall thickness over its length from the deflection section 3 into the second pipe section 6. The wall thickness is particularly preferably in the range of 0.5 to 8 millimeters, in particular in the range of 1 to 6 millimeters. The height of the at least one guide wall 7, in each case viewed at right angles to an inner surface 12 of the deflection section 3, is selected as follows.In a first curved section 19 of the deflection section 3, the height increases continuously. In a second curved section 20 of the deflection section 3, the height is essentially constant. In other words, this means that the height of the guide wall increases continuously from the front end 10 over the first curved section 19 and is then essentially constant in the second curved section. Preferably, the first curved section 19 extends over a length range of one third to one half of the total length of the deflection section 3. In the second tube section 6, the at least one guide wall 7 has a substantially constant height over a first partial section 21, viewed at right angles to an inner surface 13 of the second tube section 6.In a second subsection 22, the at least one guide wall 7 runs at an angle in the range of 35° to 65°, in particular in the range of 40° to 50°, towards the inner surface 13, so that the height of the guide wall 7 continuously decreases in the second subsection 22. In the embodiment shown, two of the aforementioned guide walls 7 are arranged. In other embodiments, more than two of the aforementioned guide walls 7 can be arranged. It is also conceivable for only a single guide wall 7 to be arranged. The two guide walls 7 are of the same type or identical design. With respect to a center plane ME running through the two center axes M1, M2, the two guide walls 7 are arranged symmetrically to one another. Furthermore, the two guide walls 7 are each at the same distance from the aforementioned center plane ME. The two guide walls 7 are here at a distance A from one another. The distance A is shown in Figure 4.Preferably, the distance A is selected such that the distance A lies in a range from 25% to 45% of the diameter of the second pipe section 6. From Figure 4 it can also be seen that the at least one guide wall 7 with the F07337 14 side surfaces lie parallel to the said center plane ME. Viewed in cross-section transverse to the deflection axis U and / or transverse to the second center axis M2, the guide wall 7 is at an angle ^, alpha to a tangent T. The tangent T extends tangentially to the respective inner surface 12, 13 of the deflection section 3 and / or of the second pipe section 6 and through the intersection point between the respective side surface 8, 9 and the respective inner surface 12, 13. The angle ^, alpha is preferably in the range from 40° to 90°. The minimum angle in this area, especially the minimum angle, has the advantage that solids cannot or can only get stuck between the inner surface and the side surface.Figure 2 shows a first use of the outlet bend 1 as an outlet bend 1 of a sanitary article, such as a toilet bowl or urinal. In the first use, as seen in the installed position of the outlet bend 1, the first central axis M1 runs at right angles to the vertical direction L. The second central axis M2 runs in the vertical direction L. The arrangement of the outlet bend 1 is such that the flow medium flows through the first pipe section 2 into the deflection section 3 and is channeled in the deflection section 3 by the at least one guide wall 7 in the direction of the vertical direction L. Figure 6 shows a second use of the outlet bend 1 as an outlet bend 1 of a sanitary article, such as a toilet bowl or urinal. In the first use, as seen in the installed position of the outlet bend 1, the first central axis M1 runs at right angles to the vertical direction L. The second central axis M2 is inclined at an angle ^ to the vertical direction L.The arrangement of the outgoing bend 1 is such that the flow medium flows through the first pipe section 2 into the deflection section 3 and is prevented from flowing against the vertical direction L in the deflection section 3 by the at least one guide wall 7 and is deflected in the direction of the second pipe section 6. This prevents the flow medium from rotating around the second central axis M2 as it runs along the second pipe section 6 due to the deflection in the deflection section 3. A receiving groove 25 for receiving a seal is also arranged in the first pipe section 2. Furthermore, the first pipe section 2 has a stop surface 26. The stop surface 26 is arranged upstream of the deflection section 3 and upstream of the at least one guide wall 7, as seen in the flow direction of the flow medium. Upstream of the stop surface 26 in the flow direction, the second pipe section has an insertion area 27 into which a pipe section can be inserted.The pipe section which projects into the insertion area 27 of the first pipe section 2 can abut against the F07337 15 stop surface 26. The stop surface 26 is arranged such that the pipe section cannot be pushed in far enough that it comes into contact with the at least one guide wall 7. Figures 7 to 8 show a further embodiment of the present outgoing bend 1. Identical parts are provided with the same reference numerals and reference is made to the above description. The main difference to the first embodiment is the shape of the at least one guide wall 7. In the further embodiment, the two side surfaces 8, 9 run at an angle to one another such that the distance between the two side surfaces decreases with increasing distance from the inner surface 12 of the deflection section 3 or from the inner surface 13 of the second pipe section 6.This means that the cross-section of the at least one guide wall 7 becomes smaller with increasing distance from the respective inner surface 12, 13. In the interior 14 of the second pipe section 6 or the deflection section 3, the side surfaces 8, 9 merge into one another at an end face 17. In other words, the guide wall 7 in this alternative embodiment is V-shaped, with the two legs of the letter V formed by the side surfaces. The angle is preferably between 10° and 45°. In the second pipe section 6, the guide wall 7 can, as can be seen from Figure 8, be slightly offset from the inner surface 13. This creates a gap 29 between the guide wall 7 and the inner surface 13. Over a first partial region 30 of the length of the guide wall 7, the guide wall 7 is in firm contact with the respective inner surface 12, 13.In a second partial region 31, here in the second pipe section 6, the guide wall 7 is arranged offset from the respective inner surface 12, 13, so that the aforementioned gap 29 is formed. The V-shaped guide wall 7 extends in terms of its height very similar to the guide wall described in connection with Figures 1 to 7. From a front end 10, the height of the guide wall 7 increases continuously over a first curved section 19. Over a second curved section 20, the guide wall 7 runs at a constant height. In the region of the rear end 11, the guide wall has a curve.F07337 16 LIST OF REFERENCE SYMBOLS 1 outlet bend 2 first pipe section 3 deflection section 4 outer deflection side 5 inner deflection side 6 second pipe section 7 guide wall 8 first side surface 9 second side surface 10 front end 11 rear end 12 inner surface of 3 13 inner surface of 6 14 interior space 15 foot section 16 rounding of 15 17 end face 18 rounding of 17 19 first bend section 20 second bend section 21 first partial section 22 second partial section 23 bend 24 deflection edge 25 receiving groove 26 stop surface 27 insertion area 28 transition area 29 gap 30 first partial area 31 second partial area M1 first central axis M2 second central axis U deflection axis T tangent ME central plane F07337 17 L plumb direction A distance ^ angle ^ angle.
Claims
F07337 18 PATENT CLAIMS 1. Outlet bend (1) for discharging a multi-phase flow medium, in particular consisting of water, solids and air, comprising a first pipe section (2) which extends along a first central axis (M1), a deflection section (3) adjoining this first pipe section (2) and having a deflection outer side (4) and a deflection inner side (5), which deflection section (3) extends along a deflection axis (U) and deflects the flow medium with respect to the first pipe section (2), a second pipe section (6) adjoining the deflection section (3) and extending along a second central axis (M2), wherein the first central axis (M1) and the second central axis (M2) extend at an angle in the range of 80° to 100°, in particular at an angle of 90°, to one another and the first central axis (M1) in the installed position is perpendicular to the vertical direction (L) runs,wherein the outgoing bend (1) further comprises at least one guide wall (7) extending into the cross-section of the outgoing bend (1) and having at least one side surface (8, 9), wherein the guide wall (7) is arranged in the deflection section (3) on the deflection outer side (4) and / or in the second pipe section (6).
2. Outgoing bend (1) according to claim 1, characterized in that the at least one guide wall (7) has a front end (10) and a rear end (11), wherein, when the guide wall (7) is arranged in the deflection section (3) and in the second pipe section (6), the front end (10) lies in the deflection section (3) and the rear end (11) lies in the second pipe section (6); or wherein, when the guide wall (7) is arranged in the deflection section (3), the front end (10) and the rear end lie in the deflection section (3); or wherein, when the guide wall (7) is arranged in the second pipe section (6),the front end (10) and the rear end (11) lie in the second pipe section (6).
3. Outlet bend (1) according to claim 1 or 2, characterized in F07337 19 that the at least one side surface (8, 9) is oriented in the direction of the deflection axis (U) or in the direction of the second central axis (M2); and / or that the at least one side surface (8, 9) runs parallel or at an angle to a central plane (ME) running through the two central axes (M1, M2).
4. Outlet bend (1) according to one of the preceding claims, characterized in that the at least one guide wall (7) has the shape of a thin wall, wherein the wall thickness of the guide wall (7) is preferably constant over the length of the guide wall and over the height of the guide wall; and / or wherein the wall thickness of the guide wall (7) is in the range from 0.5 to 8 millimeters, in particular in the range from 1 to 6 millimeters.
5. Outlet bend (1) according to one of the preceding claims, characterized in that at least two, in particular exactly two, of the said guide walls (7) are arranged at a distance (A) from one another. 6.Outlet bend (1) according to claim 5, characterized in that the guide walls (7) are of the same type or identical to one another; and / or that the distance (A) lies in a range of 25% to 45% of the diameter of the second pipe section (6); and / or that the at least two guide walls are arranged symmetrically to one another with respect to a center plane (ME) running through the two center axes (M1, M2) and are each at the same distance from said center plane (ME).
7. Outlet bend (1) according to one of the preceding claims, characterized in that the at least one guide wall (7) extends from an inner surface (12) of the deflection section and / or from an inner surface (13) of the second pipe section (6) into the interior (14) of the outlet bend (1). 8.Outgoing bend according to claim 7, characterized in that the at least one guide wall (7) adjoins the inner surface (12) of the deflection section (3) and / or the inner surface (12) of the second pipe section (6) with a foot section (15), wherein the foot section (15) is preferably rounded with a curve (16) or wherein the foot section (15) is parallel to the side surfaces. F07337 20 of the at least one guide wall (7).
9. Outgoing bend according to claim 7 or 8, characterized in that the at least one guide wall (7) is in contact with the respective inner surface (13) over its entire length; or that the at least one guide wall (7) is in contact with the respective inner surface (12, 13) over at least a first partial region (30) of its entire length, and that the at least one guide wall (7) is offset from the respective inner surface (12, 13) over at least a second partial region (31), such that a gap (29) is created between the guide wall (7) and the respective inner surface (12, 13). 10.Outgoing bend (1) according to one of the preceding claims, characterized in that the guide wall (8, 9) has two spaced-apart side surfaces (8, 9), wherein the two side surfaces (8, 9) preferably run parallel to one another; and / or wherein the two side surfaces (8, 9) preferably run parallel to a center plane (ME) extending through the two center axes (M1, M2); or wherein the two side surfaces (8, 9) run at an angle to one another, such that the distance between the two side surfaces (8, 9) decreases with increasing distance from the inner surface (12, 13) of the second pipe section (6) or the deflection section (3), and that the side surfaces (8, 9) merge into one another at an end face inside the second pipe section (6) or the deflection section (3).Outgoing bend according to one of the preceding claims, characterized in that the at least one guide wall (7) has an end face (17) which is preferably rounded with a curve (18).
12. Outgoing bend according to one of the preceding claims, characterized in that a plurality of guide walls (7) are arranged next to one another and spaced from one another, wherein preferably two adjacent guide walls (7) are connected to one another by a curved wall, which wall extends from the end face (17) of the guide wall lying closer to a center plane (ME) running through the two center axes (M1, M2) to the foot region of the guide wall lying further away from the center plane (ME). F07337 21 13. Outgoing bend (1) according to one of the preceding claims, characterized in that the height of the at least one guide wall (7) in each case increases continuously at right angles from an inner surface (12) of the deflection section (3) in a first curved section (19) of the deflection section (3) and is substantially constant in a second curved section (20) of the deflection section (3), wherein the first curved section (19) preferably extends over a length range of one third to one half of the total length of the deflection section (3); and / or that the at least one guide wall (7) in the second pipe section (6) has a substantially constant height over a first section (21) as seen at right angles from an inner surface (13) of the second pipe section (6), and that the at least one guide wall (7) in a second section (22) is inclined at an angle in the range of 35° to 65°, in particular in the range of 40° to 50°,towards the inner surface (13), so that the height of the guide wall (7) in the second partial section (22) continuously decreases.
14. Outgoing bend (1) according to one of the preceding claims, characterized in that, viewed in cross-section transverse to the deflection axis (U) and / or transverse to the second central axis (M2), an angle (^, alpha) between the at least one side surface (8, 9) of the at least one guide wall (7) and a tangent (T) which extends tangentially to the inner surface (12, 13) of the deflection section (3) and / or of the second pipe section (6) and through the intersection point between the respective side surface (8, 9) and the respective inner surface (12, 13), is in the range from 40° to 90°.
15. Outgoing bend (1) according to one of the preceding claims, characterized in that, seen in a center plane (ME) running through the two center axes (M1, M2), the deflection section (3) on the deflection outer side (4) with a bend (23) arcuate,in particular in the shape of a circular arc; and / or that, viewed in a center plane (ME) running through the two center axes (M1, M2), the deflection section (3) is designed as a deflection edge (24) on the deflection inner side (5).
16. Outlet bend (1) according to one of the preceding claims, characterized in that the at least one guide wall (7) is formed on the inner surface (12) of the deflection section (3) and the inner surface (13) of the second pipe section (6); or that the at least one guide wall is formed on an insert which, in, F07337 22 the deflection section and the second pipe section.
17. Outlet bend (1) according to one of the preceding claims, characterized in that the first pipe section (2) has a stop surface (26) which, viewed in the flow direction of the flow medium, is arranged in front of the deflection section (3) and in front of the at least one guide wall (7).
18. Use of an outlet bend (1) according to one of the preceding claims as an outlet bend (1) of a sanitary article, such as a toilet bowl or a urinal, wherein, viewed in the installed position of the outlet bend (1), the first central axis (M1) runs perpendicular to the vertical direction (L) and the second central axis (M2) runs in the vertical direction (L), such thatthat the flow medium flows through the first pipe section (2) into the deflection section (3) and is channeled in the deflection section (3) by the at least one guide wall (7) in the direction of the vertical direction (L); or wherein, viewed in the installed position of the outlet bend (1), the first central axis (M1) runs perpendicular to the vertical direction (L) and the second central axis (M2) is inclined at an angle (^) to the vertical direction (L), such that the flow medium flows through the first pipe section (2) into the deflection section (3) and is prevented from flowing up against the vertical direction (L) in the deflection section (3) by the at least one guide wall (7) and is deflected in the direction of the second pipe section (6).
19. Sanitary arrangement comprising an outlet bend (1) according to one of the preceding claims 1 to 17, and a sanitary article, such as a toilet bowl or a urinal,with a connection area for connecting the outlet bend (1) or a connection area for connecting a pipe section which then opens into the outlet bend (1), wherein, in the installed position of the outlet bend (1), the first central axis (M1) runs at right angles to the vertical direction (L) and the second central axis (M2) runs in the vertical direction (L), such that the flow medium flows through the first pipe section (2) into the deflection section (3) and is channeled in the deflection section (3) by the at least one guide wall (7) in the direction of the vertical direction (L); or wherein, in the installed position of the outlet bend (1), the first central axis (M1) runs at right angles to the vertical direction (L) and the second central axis (M2) runs at an angle (^) inclined to the vertical direction (L), such thatthat the flow medium flows through the first pipe section (2) into the deflection section (3) and is prevented from flowing up against the vertical direction (L) in the deflection section (3) by the at least one guide wall (7), F07337 23 and is deflected towards the second pipe section (6).