Deflecting pipe piece
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
Existing deflection bends or branches for toilet bowls and urinals face a conflict between designing sewer pipes with minimal gradient and reducing flushing volume, as larger flushing volumes enhance sewer line performance but smaller volumes compromise it.
A deflection pipe piece with a guide structure featuring a constriction that deflects the flow medium, reducing energy dissipation and allowing longer wastewater pipes with improved flushing performance at lower water consumption, by channeling the flow medium through a V-shaped constriction that minimizes lateral sloshing and maintains main flow direction.
The deflection pipe piece enhances flushing performance while reducing water consumption, allowing for longer wastewater pipes with reduced energy loss and improved flow guidance, effectively addressing the conflict between pipe gradient and flushing volume.
Smart Images
Figure EP2024068972_16012025_PF_FP_ABST
Abstract
Description
[0001] TITLE
[0002] DEFLECTION PIPE PIECE
[0003] TECHNICAL FIELD
[0004] The present invention relates to a diverting pipe piece according to claim 1 and a sanitary arrangement according to claim 14 as well as a use according to claim 15.
[0005] STATE OF THE ART
[0006] Diverters or splitters for toilet bowls are well-known in the art. Diverters or splitters connect a toilet bowl or urinal to a waste pipe. Typically, the waste pipe runs horizontally or at a slight incline to the horizontal.
[0007] Practical experience has led to a desire to design longer sewer pipes with no or only a slight gradient. Another desire is to reduce the flush volume when flushing a toilet. This presents a conflicting objective, as a large flush volume typically provides a high flushing performance for the sewer line, while a small flush volume provides a low flushing performance.
[0008] PRESENTATION OF THE INVENTION
[0009] The present invention is based on an object of providing a diverting pipe section which, with the same flushing water consumption, increases the flushing performance of a wastewater line arranged downstream of the diverting pipe section, so that the wastewater line can be made comparatively longer, or which provides the same or an improved flushing performance with lower flushing water consumption.
[0010] This object is achieved by the deflection pipe section according to claim 1. The deflection pipe section according to claim 1 serves to discharge a multi-phase flow medium, in particular consisting of water, solids, and air. The deflection pipe section comprises a first pipe section which extends 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 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. Furthermore, the deflection pipe section comprises a guide structure arranged inside the deflection section on the outer deflection side for guiding the flow medium in the deflection section. The guide structure has a constriction on the outer deflection side.The constriction creates two surface sections opposite each other relative to the center axis of the deflection section. The constriction reduces the pipe cross-section of the deflection section. At the point where the pipe cross-sectional area is minimal, the surface sections each extend along a straight line, viewed in a sectional plane perpendicular to the center axis of the deflection section. The straight lines are inclined to each other at an angle (α, alpha). This means that the straight line of one surface section is inclined at the said angle to the straight line of the other surface section.
[0011] The constriction, with its straight lines or surface sections running at an angle to each other, has the advantage that the flow medium is channeled through the constriction as it flows through the deflection section. This prevents lateral sloshing along the inner walls of the deflection pipe section. Furthermore, the flow in the deflection section is channeled in the direction of flow by the guide structure. By preventing sloshing and / or channeling, lateral flow components are eliminated, so that less energy is dissipated transversely in the main flow.
[0012] Due to the constriction, the cross-sectional area of the deflection section is reduced in the area of the constriction.
[0013] Particularly preferably, the guide structure or the constriction is provided by an indentation from the outside in the area of the deflection outer side.
[0014] Preferably, the guide structure is arranged exclusively on the outer side of the deflection section and not on the inner side. The outer side of the deflection section is the side of the deflection section that has the largest deflection radius, and the inner side of the deflection section is the side of the deflection section that has the smallest deflection radius.
[0015] Preferably, the minimum pipe cross-sectional area corresponds to 80% to 95%, in particular 85% to 92%, of the cross-sectional area of the first pipe section or the second pipe section.
[0016] When viewed in the installed position, the deflection pipe section is preferably positioned such that the deflection outer side is below the deflection inner side with respect to the vertical direction.
[0017] The cutting plane mentioned above runs perpendicular to the central axis of the deflection section.
[0018] The first pipe section is inclined at an angle (ß, beta) to the second pipe section, whereby the first central axis is inclined at the specified angle to the second central axis. The angle is greater than 120°. The angle is particularly preferably in the range of 125° to 145°, in particular 135°. The deflection pipe section is accordingly designed such that the flow medium is deflected by the angle (ß, beta) between the first central axis and the second central axis.
[0019] Particularly preferably, the first pipe section and / or the second pipe section have a cylindrical, in particular a circular cylindrical, cross-section.
[0020] The deflection pipe section, i.e., the first pipe section, the deflection section, and the second pipe section, are preferably formed as a single piece. The deflection pipe section is particularly preferably made of plastic, in particular by a blow molding or injection molding process.
[0021] Preferably, said pipe sections have a cylindrical portion. One or both of the cylindrical portions can be designed as a sleeve for inserting a pipe or for welding a pipe. One or both of the cylindrical portions can be designed as a lateral surface for projecting into a pipe sleeve or for welding a pipe.
[0022] In use, the fluid flows through the diverter pipe section in such a way that it does not completely fill the cross-section, but essentially fills half or less. This is a partially filled pipe section that can be used in a partially filled pipe system.
[0023] In the installed position, the deflection pipe section is preferably positioned such that the first central axis is inclined at an angle to the horizontal and the second central axis is horizontal. In an alternative installed position, the deflection pipe section is preferably positioned such that the first central axis is inclined at an angle to the horizontal and the second central axis is inclined at an angle to the horizontal, wherein the angle between the first central axis and the horizontal is greater than the angle between the second central axis and the horizontal. The guide structure has a gradient in the flow direction from the first pipe section into the second pipe section.
[0024] In the installed position, the first central axis and the second central axis preferably lie in a vertical plane. In an alternative installed position, the first central axis is inclined at an angle to said plane.
[0025] Preferably, the two surface sections are V-shaped when viewed in the said cutting plane.
[0026] In a first variant, the surface section transitions from the straight line at the minimum pipe cross-sectional area toward the first pipe section to the shape of the first pipe section, and toward the second pipe section to the shape of the second pipe section. This is preferably a continuous transition.
[0027] In a second variant, a sub-area of each surface segment is defined by a set of adjacent straight lines, starting from the straight line at the minimum pipe cross-section. This means that a large number of straight lines are distributed in the flow direction, thus defining the respective surface segment in terms of its area.
[0028] A family is defined as a multitude of straight lines distributed across the surface segments, thus defining or spanning the surface segments. Geometrically speaking, each straight line lies within the area of the surface segment.
[0029] Starting from the straight lines of the family of straight lines that define the end of the sub-area towards the first pipe section and the second pipe section, the surface section changes towards the first pipe section to the shape of the first pipe section and towards the second pipe section to the shape of the second pipe section.
[0030] Preferably, the two surface sections extend over a partial length of the deflection section.
[0031] The partial length is preferably greater than 50% of the total length of the deflection section.
[0032] The intersection point of two opposite straight lines preferably lies outside the deflection section. The intersection point of two opposite straight lines preferably lies in a reference plane B spanned by the first central axis M1 and the second central axis M2. The intersection point therefore does not lie within the interior of the deflection section.
[0033] The center axis of the deflection section also lies in the reference plane mentioned. The reference plane runs perpendicular to the section plane mentioned.
[0034] Preferably, the constriction extends from the outer side of the deflection section to at most half the diameter of the deflection section. This means that the constriction lies in the lower half of the cross-section of the deflection section.
[0035] Preferably, the diameters of the first pipe section and / or the second pipe section are in the range of 75 to 110 millimeters.
[0036] Preferably, the deflection inner side has a substantially circular-cylindrical inner surface, which inner surface adjoins the two opposite surface sections upwards and connects the two surface sections.
[0037] Preferably, the two opposite surface sections on the outside of the deflection are connected to a surface section that is concavely rounded towards the interior.
[0038] Preferably, the cross-sectional area of the deflection section in the region of the constriction is variable over the length of the constriction in the flow direction, with the cross-sectional area decreasing in the flow direction from the first pipe section to a minimum cross-sectional area and then increasing again towards the second pipe section. The change in the cross-sectional area preferably occurs continuously.
[0039] Preferably, the inside of the deflection section does not have any sharp edges or sudden cross-sectional changes.
[0040] Preferably, the region with the minimum cross-sectional area, viewed in the direction of the center axis of the deflection section, is located at a distance from the first pipe section. In one variant, the distance is selected such that the said region is closer to the first pipe section than to the second pipe section, in particular such that the distance is less than a third of the total length of the center axis of the deflection section. In particular, the distance is less than a quarter of the total length. Particularly preferably, the distance is approximately 20% of the total length. In a second variant, the distance is selected such that the said region is closer to the second pipe section than to the first pipe section, in particular such that the distance is greater than a third or a quarter of the total length of the center axis of the deflection section.In a third variant, the distance is selected such that the said area is located centrally between the first pipe section and the second pipe section.
[0041] Preferably, the first pipe section has a cylindrical cross-section, and the cylindrical cross-section transitions into the constriction cross-section. The second pipe section has a cylindrical cross-section, with the constriction cross-section transitioning into the cylindrical cross-section.
[0042] Preferably, the central axis of the deflection section extends along an arc, with the center of the arc located outside the deflection section. The arc can have different radii along its length. Alternatively, the arc can also have a constant radius.
[0043] A line of intersection between the inner surface of the deflection outer side and a reference plane spanned by the first central axis and the second central axis extends along a circular arc, the center of the circular arc being outside the deflection section.
[0044] A plumbing arrangement comprises a diverter pipe section as described above, a sanitary article, such as a toilet bowl or urinal, and a pipe section. The sanitary article has a connection area for connecting a pipe section, wherein the pipe section opens into the first pipe section of the diverter pipe section, and wherein a drain pipe or another pipe section is connected to the second pipe section.
[0045] The pipe section between the sanitary article and the diverting pipe section can be composed of one or more pipe sections. The pipe section preferably has an outlet bend. The outlet bend deflects the flow, preferably by an angle of 90°, in the direction of flow.
[0046] The pipe length of the pipe section is preferably in the range of 200 to 800 millimeters. This means that the first pipe section of the diverter pipe section is spaced from the sanitary article by this length.
[0047] The further pipe section can, for example, have the form of a deflection pipe section or a branch.
[0048] Further embodiments are specified in the dependent claims.
[0049] BRIEF DESCRIPTION OF THE DRAWINGS
[0050] Preferred embodiments of the invention are described below with reference to the drawings, which are for illustrative purposes only and are not to be construed as limiting. In the drawings:
[0051] Fig. 1 is a first perspective view of a deflection pipe piece according to an embodiment of the present invention;
[0052] Fig. 2 is a second perspective view of a deflection pipe section according to Figure 1;
[0053] Fig. 3 is a side view of the deflection pipe section according to the preceding figures 1 and 2;
[0054] Fig. 4a is a sectional view at the interface AA according to Figure 3;
[0055] Fig. 4b a sectional view at the interface BB according to Figure 3;
[0056] Fig. 4c is a sectional view at the interface CC according to Figure 3; and
[0057] Fig. 4d is a sectional view at the interface DD according to Figure 3. DESCRIPTION OF PREFERRED EMBODIMENTS
[0058] Figures 1 to 4d show a preferred embodiment of a diverter pipe section according to the present invention. The diverter pipe section serves to guide a multiphase flow medium, which is composed in particular of water, solids, and air. The diverter pipe section is preferably used in conjunction with a toilet bowl or urinal for draining wastewater.
[0059] The deflection pipe section comprises a first pipe section 1, a deflection section 3 adjoining the first pipe section 1 and a second pipe section 2. The first pipe section 1 extends along a first central axis M1 and the second pipe section 2 extends along a second central axis M2.
[0060] The deflection section 3 connects the two pipe sections 1, 2 and deflects the flow medium from the first pipe section 1, then guides it into the second pipe section 2. The two pipe sections 1, 2, or the two central axes M1, M2, are inclined at an angle ß, beta to one another. The angle ß, beta between the first central axis M1 and the second central axis M2 is preferably greater than 120°. The angle is particularly preferably in the range from 125° to 145°, in particular 135°.
[0061] The deflection section 3 further comprises a guide structure 6 arranged inside the deflection section 3 on the deflection outer side 4 for guiding the flow medium in the deflection section 3. The guide structure 6 is arranged such that the flow medium can be guided through the deflection section 3 with the lowest possible flow losses.
[0062] The guide structure 6 has a constriction 7 on the outer side 4 of the deflection section. The shape of the constriction 6 is clearly visible in Figures 4b to 4d. Figures 4a to 4d show the cross-sectional shapes of the deflection section at the respective interfaces AA, BB, CC, and DD according to Figure 3.
[0063] The constriction 7 has two surface sections 8 opposite each other with respect to the central axis M3 of the deflection section 3. At the point where the pipe cross-sectional area of the constriction 7 is minimal, the surface sections 8 each extend along a straight line G, as seen in a sectional plane S that runs transversely to the central axis M3 of the deflection section 3. The straight lines G are inclined at an angle α, α to each other. This cross-sectional area lies at section BB and is shown in Figure 4b.
[0064] The first pipe section 1 has a cylindrical cross-section. This cylindrical cross-section merges into the cross-section of the constriction 7. Furthermore, the second pipe section 2 has a cylindrical cross-section, with the cross-section of the constriction merging into the cylindrical cross-section.
[0065] In Figures 4b, 4c, and 4d, the sectional views extend in different sectional planes S, each of which extends transversely to the central axis M3 of the deflection section 3. These illustrations show the course of the respective surface sections 8 in the aforementioned sectional plane S.
[0066] In other words, the constriction in the said section plane at the minimum pipe cross-sectional area has the shape of the letter "V." The constriction is therefore V-shaped. The two legs of the letter "V" extend at the aforementioned angle α, α. The angle α, α, or the degree of opening of the two legs of the letter V, varies over the length of the deflection section 3.
[0067] Starting from the straight line G at the minimum pipe cross-sectional area, the surface section runs as a transition to the first pipe section 1 and the second pipe section 2. The surface section 8 transitions from the straight line G in the direction of the first pipe section 1 to the shape of the first pipe section 1. The surface section 8 transitions from the straight line G in the direction of the second pipe section 2 to the shape of the second pipe section 2.
[0068] It is also conceivable that a sub-area of the surface section is defined in terms of its shape by a family of adjacent straight lines G. The straight lines of the family lie next to each other as seen in the flow direction and span the surface section 8. In other words, the surface sections extend along a straight line G on each increment along the central axis M3. In this variant, the transition described above does not occur from the straight line G at the minimum pipe cross-sectional area, but from a straight line that is spaced from the straight line G and marks the end of the sub-area.
[0069] In the embodiment shown, the two surface sections 8 extend over a partial length T of the deflection section 3. Before the surface section 8 and / or after the surface section, the deflection section 3 has the cross section of the first pipe section 1 or the second pipe section 2.
[0070] The intersection point 9 of two opposite straight lines G lies outside the deflection section 3. The intersection point 9 is shown accordingly in Figure 4b. The intersection point of two opposite straight lines also lies in a reference plane B, which is spanned by the first central axis M1 and the second central axis M2.
[0071] From the sectional views, it is clear that the constriction 7 extends from the outer side 4 of the deflection to at most half the diameter of the deflection section 3. This means that the constriction 7 does not extend into the area of the inner side 5 of the deflection.
[0072] The deflection inner side 5 here has a substantially circular-cylindrical inner surface 10. The inner surface 10 adjoins the two opposite surface sections 8 at the top and connects the two surface sections 8.
[0073] The two opposite surface sections 8 are connected at the deflection outer side 4 with a surface section 11 which is concavely rounded towards the interior.
[0074] The cross-sectional area of the deflection section 3 is variable in the region of the constriction 7 over the length of the constriction 7 as seen in the flow direction F. The cross-sectional area decreases in the flow direction from the first pipe section to the minimum pipe cross-sectional area and then increases again towards the second pipe section.
[0075] Viewed in the direction of the central axis M3 of the deflection section 3, the region with the minimum pipe cross-sectional area is located at a distance A from the first pipe section 1. In the embodiment shown, the distance A is selected such that the said region is closer to the first pipe section 1 than to the second pipe section 2. Preferably, the distance A is less than one-third or less than one-quarter of the total length of the central axis of the deflection section 3. LIST OF REFERENCE SYMBOLS
[0076] 1 first pipe section
[0077] 2 second pipe section
[0078] 3 Deflection section
[0079] 4 Deflection outer side
[0080] 5 Deflection inside
[0081] 6 Management structure
[0082] 7 Constriction
[0083] 8 Area section
[0084] 9 Intersection
[0085] 10 inner surface
[0086] 11 concave rounded surface section
[0087] B Reference plane
[0088] F Flow direction
[0089] G Straight
[0090] M1 first central axis
[0091] M2 second central axis
[0092] M3 Center axis of deflection section
[0093] S cutting plane
[0094] T partial length a angle ß angle
Claims
PATENT CLAIMS 1. A deflection pipe section for discharging a multi-phase flow medium, in particular consisting of water, solids, and air, comprising a first pipe section (1) extending along a first central axis (M1), a deflection section (3) adjoining this first pipe section (1) and having a deflection outer side (4) and a deflection inner side (5), which deflection section (3) deflects the flow medium relative to the first pipe section (1), a second pipe section (2) adjoining the deflection section (3) and extending along a second central axis (M2), and a guide structure (6) arranged inside the deflection section (3) on the deflection outer side (4) for guiding the flow medium in the deflection section (3), characterized in that the guide structure (6) has a constriction (7) on the deflection outer side (4) that reduces the pipe cross-section of the deflection section,wherein the constriction (7) forms two surface sections (8) opposite one another with respect to the central axis (M3) of the deflection section (3), wherein at the point at which the pipe cross-sectional area is minimal, the surface sections (8) each extend along a straight line (G) as seen in a sectional plane (S) extending transversely to the central axis (M3) of the deflection section (3), wherein the straight lines (G) are inclined at an angle (α, alpha) to one another.
2. Deflection pipe piece according to claim 1, characterized in that the two surface sections (8) are V-shaped when viewed in said sectional plane (S).
3. Deflection pipe section according to one of the preceding claims, characterized in that starting from the straight line (G) at the minimum pipe cross-sectional area, the surface section changes towards the first pipe section (1) to the shape of the first pipe section (1) and towards the second pipe section (2) to the shape of the second pipe section (2).
4. Deflection pipe section according to claim 1 or 2, characterized in that a partial area of each surface section (8) is defined starting from the straight line at the minimum pipe cross-section by a family of adjacent straight lines (G).
5. Deflection pipe section according to claim 4, characterized in that starting from the straight lines which define the end of the partial region to the first pipe section (1) and to the second pipe section (2), the surface section merges in the direction of the first pipe section (1) into the shape of the first pipe section (1) and in the direction of the second pipe section (2) into the shape of the second pipe section (2).
6. A deflection pipe section according to one of the preceding claims, characterized in that the intersection point (9) of two opposing straight lines (G) lies outside the deflection section (3); and / or that the intersection point of two opposing straight lines lies in a reference plane (B) spanned by the first central axis (M1) and the second central axis (M2).
7. Deflection pipe piece according to one of the preceding claims, characterized in that the constriction (7) extends from the deflection outer side (4) to at most half the diameter of the deflection section (3).
8. Deflection pipe piece according to one of the preceding claims, characterized in that the deflection inner side (5) has a substantially circular-cylindrical inner surface (10), which inner surface (10) adjoins the two opposite surface sections (8) at the top and connects the two surface sections (8).
9. Deflection pipe piece according to one of the preceding claims, characterized in that the two opposite surface sections (8) on the deflection outer side (4) are connected to a surface section (11) which is concavely rounded towards the interior.
10. Deflection pipe section according to one of the preceding claims, characterized in that the cross-sectional area of the deflection section (3) in the region of the Constriction (7) is variable over the length of the constriction (7) in the flow direction (F), wherein the cross-sectional area decreases in the flow direction from the first pipe section to the minimum pipe cross-sectional area and then increases again towards the second pipe section. 11.Deflection pipe section according to claim 10, characterized in that, viewed in the direction of the center axis (M3) of the deflection section (3), the region with the minimum pipe cross-sectional area is located at a distance (A) from the first pipe section (1), wherein the distance (A) is selected such that said region is closer to the first pipe section (1) than to the second pipe section (2), in particular such that the distance (A) is less than one-third or less than one-quarter of the total length of the center axis of the deflection section (3); or wherein the distance (A) is selected such that said region is closer to the second pipe section (2) than to the first pipe section (1), in particular such that the distance (A) is greater than one-third or greater than one-quarter of the total length of the center axis of the deflection section; or wherein the distance (A) is selected such that said region is centrally located between the first pipe section (1) and the second pipe section (2).
12. Deflection pipe section according to one of the preceding claims, characterized in that the first pipe section (1) has a cylindrical cross-section, that the cylindrical cross-section merges into the cross-section of the constriction, and that the second pipe section has a cylindrical cross-section, wherein the cross-section of the constriction merges into the cylindrical cross-section.
13. A deflection pipe section according to one of the preceding claims, characterized in that the central axis (M3) of the deflection section (3) extends along an arc, the center of the arc lying outside the deflection section (3); and / or that a line of intersection between the inner surface of the deflection outer side (4) and a reference plane (B) spanned by the first central axis and the second central axis extends along an arc, the center of the arc lying outside the deflection section (3).
14. Sanitary arrangement comprising a diverting pipe piece according to one of the preceding claims, a sanitary article, such as a toilet bowl or a urinal, and a pipe piece, wherein the sanitary article has a connection area for connecting the pipe piece, wherein the pipe piece opens into the first pipe section (2) of the diverting pipe piece (1) and wherein on the second pipe section (6) a drain pipe or another piece of pipe is connected.
15. Use of an outlet bend (1) according to one of the preceding claims 1 to 13 in a drain line of a sanitary article, such as a toilet bowl or a urinal.