Drain with a siphon, washbasin with a drain, and method for discharging water

Abstract

The invention relates to a drain (2) with a siphon (3). The drain (2) with the siphon (3) comprises a first inflow opening (4) and a second inflow opening (5). Furthermore, the drain (2) comprises a flow region (6), a deflection section (7) and a flow pipe (10). The flow region (6) has a conical shape and tapers in cross section in the flow direction of the water. Furthermore, the invention relates to a washbasin (1) with a drain (2) and to a method for discharging water through a drain (2) or through a washbasin (1).

Description

[0001] Drain with a siphon, washbasin with a drain and method for draining water

[0002] The present invention relates to a drain with a siphon, a wash basin with a drain and a method for draining water.

[0003] Drains with siphons are well-known in the art. Siphons serve as odor traps. A siphon creates an odor- and gas-tight, yet liquid-permeable, seal in a pipe system.

[0004] The functional principle of a drain with a siphon is generally based on an S-shaped pipe, the lower bend of which always remains filled with liquid, thus preventing any liquid from passing through. Drains with a siphon are used, for example, in bathtubs, kitchen sinks, wash basins, shower wall drains, point drains or shower channels. Drains with a siphon are also used in commercial areas. State-of-the-art drains with siphons have the disadvantage that deposits form which block the drain or siphon after a certain time. In addition, state-of-the-art siphons and drains create areas which are inaccessible using normal cleaning tools and which can still release gases from the drain. Deposits form in these areas, which are difficult or impossible to clean. A biofilm which emits gas often forms in these areas.This often results in an unpleasant odor in the drain area that cannot be removed.

[0005] It is the object of the invention to overcome the disadvantages of the prior art

[0006] To overcome technology and in particular to create a drain with a siphon which is low-maintenance, durable and hygienic.

[0007] The problem is solved by a drain with a siphon, a wash basin with a drain and a method for draining water according to the independent patent claims.

[0008] In particular, the object is achieved by a drain with a siphon. The drain with the siphon comprises a first inlet opening, a second inlet opening, a flow area, a deflection section and a flow pipe. The second inlet opening is located downstream of the first inlet opening. The first inlet opening can be larger in cross-section than the second inlet opening. The flow area connects the first inlet opening and the second inlet opening. The flow area is 1The deflection section is designed so that water can flow through it. The deflection section is located downstream of the second inlet opening and is curved. In cross-section, the deflection section has an outer wall with an outer radius and an inner edge with an inner radius, the outer radius being larger than the inner radius. The flow pipe is located downstream of the deflection section. The flow area is at least partially, preferably completely, conical in shape. The flow area can taper in cross-section in the direction of flow of the water.

[0009] The water can be directed through the second inlet opening into the diversion section through the flow area. The conical shape or tapering of the flow area accelerates the water in the flow area. This prevents deposits from forming in the flow area or in the area below. The conical shape also ensures that the flow area is easily accessible from the sink and is therefore easy to clean. A further advantage of the conical shape is that the water surface on the warm side is smaller than with prior art drains. Because the surface area of ​​the standing water is smaller, less standing water evaporates and the drain dries out much more slowly than with prior art drains.

[0010] It is possible that the drain and the siphon are made of metal and / or plastic. The drain and the siphon can be made of a corrosion-resistant material. It is also possible that the drain and the siphon are made of different materials. It is possible that the parts visible from the outside are made of a high-quality corrosion-resistant material for aesthetic reasons, while the parts not visible from the outside are made of a (sturdy, corrosion-resistant but visually unattractive) material such as plastic.

[0011] The first inlet is the opening through which water or another liquid can enter the drain. For example, water can collect in a sink and then flow into the drain through the first inlet. If the drain is installed under a sink, it is possible that the first inlet can be seen through the sink if there are no structural components above the inlet.

[0012] The second inlet opening is arranged downstream of the first inlet opening and the flow region. Water can flow from the flow region into the deflection section of the siphon through the second inlet opening. The first inlet opening and the second inlet opening preferably have a vertical distance of at least 2 cm. The second inlet opening is arranged at a lower level than the first inlet opening. The second inlet opening can, for example, be arranged at a level that is at least 2 cm and preferably substantially 6 cm below the level of the first inlet opening.

[0013] The first inlet opening can be circular in cross-section. The second inlet opening can also be circular. The first inlet opening and the second inlet opening can have the same shape, wherein the first inlet opening and the second inlet opening are of different sizes. It is also possible for the first inlet opening and the second inlet opening to have a different shape. It is possible for the first inlet opening to be circular and the second inlet opening to be oval. The deflection section can, for example, be essentially U-shaped, wherein the legs of the U-shape can be asymmetrical and the angle of the legs can deviate from the U-shape.

[0014] High volume flows can be discharged through a drain of this type. It is possible for a drain of this type to be installed in different situations and to be dimensioned differently according to the required volume flow. For example, a drain can be arranged under a bathtub with a minimum drainage capacity of 51 liters per minute, a kitchen sink with a minimum drainage capacity of 42 liters per minute, a wash basin with a minimum drainage capacity of 36 liters per minute, a shower tray with a point drain with a minimum drainage capacity of 24 liters per minute or a shower channel with a minimum drainage capacity of 48 liters per minute. It is also conceivable for the drain to be used in commercial areas with significantly greater minimum drainage capacities. The object of the invention is achieved alternatively or in combination with the above by a drain with a siphon.The drain with the siphon comprises a first inlet opening, a second inlet opening, a flow area, a deflection section and a flow pipe. The second inlet opening is located downstream of the first inlet opening. The first inlet opening can be larger in cross section than the second inlet opening. The flow area connects the first inlet opening and the second inlet opening. The flow area is designed so that water can flow through it. The deflection section is located downstream of the second inlet opening and is curved. In cross section, the deflection section has an outer wall with an outer radius and an inner edge with an inner radius, wherein the outer radius is larger than the inner radius. The flow pipe is located.

[0015] : Downward of the deflection section . In the sequence, the second inlet

[0016] ; opening formed eccentrically in the deflection section so that : sh in the cross section is closer to the outer wall than to the inner wall .

[0017] By arranging the second inlet opening in this way, the water from the flow area is directed close to the outer wall. The water therefore flows at a high speed along the inside of the outer wall of the deflection section. This means that a high flow speed is also achieved at the lowest point of the deflection section and deposits are prevented from forming in the area of ​​the lowest point of the deflection section. This prevents the deflection section from becoming blocked. This arrangement increases the service life and maintenance of the siphon is no longer necessary or at least requires significantly less maintenance. The flow area can have a first axis of rotational symmetry. The flow pipe can have a second axis of rotational symmetry. The second axis of rotational symmetry can intersect the first axis of rotational symmetry at an angle of 20° to 60°.The second axis of rotational symmetry may also intersect the first axis of rotational symmetry at an angle of substantially 45 ° .

[0018] Such an angle ensures that the water, after flowing through the flow area and the deflection section, can flow advantageously through the flow pipe and finally be drained away. In contrast to a substantially vertically aligned flow pipe, an angled flow pipe ensures a sufficiently high flow velocity of the water. This ensures that solids in the water are efficiently removed through the

[0019] I uppipe into the adjoining sewer system. This prevents solids from accumulating in the diversion section. Biofilm also does not form. This ensures a long service life and ease of maintenance of the drain.

[0020] The first axis of rotational symmetry can be essentially vertical when the drain is in use. Gravity then acts parallel to the first axis of rotational symmetry. The second axis of rotational symmetry can intersect the first axis of rotational symmetry at an angle of 20° to 60° or 45°, so that the water flowing from the flow region through the second inlet opening and the diversion section into the flow pipe is diverted in the diversion section by an angle of between 110° and 150° or essentially 135° and then reaches the flow pipe. The water then flows through the flow pipe essentially parallel to the second axis of rotational symmetry, at least partially against the force of gravity, to the further sewerage system connected downstream to the flow pipe. In the flow pipe, the water thus reaches a first level from a higher level.

[0021] The first inlet opening can be designed in cross-section essentially 1.1 to 2.5 times as large as the second inlet opening.

[0022] Such a ratio ensures that the water in the flow area between the first inlet opening and the second inlet opening is sufficiently accelerated and at the same time a sufficiently large volume flow can flow from the first inlet opening through the flow area and the second inlet opening into the deflection section.

[0023] 1 possible that the first inlet opening is circular

[0024] 1 and has a diameter between 2 cm and 4 cm.

[0025] \ The first inlet opening can be circular and have a diameter of substantially 3 cm. It is possible for the second inlet opening to also be circular and have a diameter between 1 cm and 3 cm. It is possible for the second inlet opening to be circular and have a diameter of substantially 1.9 cm. The first inlet opening and the second inlet opening in the use state can be arranged vertically one above the other and have a vertical distance in a range of substantially 6 cm to 7 cm. The water can then flow in the direction of gravity from the first inlet opening through the flow region to the second inlet opening. It is possible for the first inlet opening and the second inlet opening to have a vertical distance of between 5 cm and 8 cm. The first inlet opening and the second inlet opening can have a vertical distance of substantially 6.5 cm.It is possible for the first inlet opening to be circular and have a diameter that is substantially between 1.4 and 1.6 times the diameter of the circular second inlet opening. It is possible for the deflection section and the flow pipe to be substantially circular in cross-section and have a diameter between 2.5 cm and 3.5 cm, in particular 4 cm. It is also possible for the deflection section and the flow pipe to be substantially circular in cross-section and have a diameter between 3.5 cm and 4.5 cm, in particular 4 cm.

[0026] The wall of the first inlet opening may have a cross-sectional curvature with a radius of substantially 3 mm to 9 mm. It is possible for the wall of the first inlet opening to have a radius of substantially 6 mm.

[0027] Such a design of the wall of the first inlet opening ensures that the water can flow advantageously through the first inlet opening and be accelerated in the flow area. Furthermore, the water flows essentially laminarly through the flow area through such a shaped wall of the first inlet opening. This ensures a high water flow velocity.

[0028] It is possible for the entire wall of the first inlet opening to be designed with a radius of 3 mm to 9 mm, or 6 mm. It is also possible for the wall of the first inlet opening to be partially designed with a radius of 3 mm to 9 mm, or 6 mm.

[0029] The upper edge of the first inlet opening and a lower edge of the

[0030] The deflection sections may have a vertical distance of at least 4 cm. The upper edge of the first inlet opening and the lower edge of the deflection section may have a vertical distance of no more than 27 cm. The upper edge of the first inlet opening and the lower edge of the deflection section may have a vertical distance of no more than 11 cm, in particular no more than 9 cm.

[0031] Such a vertical clearance ensures that furniture or other fixtures located beneath the drain are spatially inconvenienced as little as possible and can be constructed simply. This provides the greatest possible installation space for furniture located beneath the drain.

[0032] The deflection section of the outlet can be designed such that c the deflection section a liquid medium can be deflected in at least two different directions.

[0033] This type of diversion section allows the water to be drained in a way that is adapted to the installation situation. This type of diversion section thus enables a structurally flexible connection of the drain to the further downstream piping system.

[0034] The deflection section can be designed to be substantially rotationally symmetrical about a third axis of rotational symmetry. A liquid medium can be deflected in the deflection section within a range of 360° about the third axis of rotational symmetry. The third axis of rotational symmetry can be coaxial with or identical to the first axis of rotational symmetry.

[0035] By designing the diversion section in this way, it is possible to efficiently direct the water at a high volume flow rate, while maintaining a functioning gas seal in the siphon, into an area vertically below the diversion section. This makes it possible to install the flow pipe so that the second axis of rotational symmetry is essentially vertical. Designing the drain with a rotationally symmetrical diversion section thus provides a multitude of design variants for connecting the downstream piping to the drain. In this case, the flow pipe has a larger diameter than the diversion section.

[0036] The outer wall of the deflection section can essentially form a hollow cylinder, whereby the lower edge can in particular be rounded.

[0037] It is possible that the outer wall of the deflection section tapers in the seal against the force of gravity. In this case, the section at the level of the second inlet opening has a smaller cross-section than at a higher level. The deflection section can widen in one direction against the force of gravity. In this case, the deflection section at the level of the second inlet opening has a smaller cross-section than at a higher level.

[0038] The diversion section can have a flow cone. The water then flows essentially laminarly from the flow region and the second inlet opening in the direction of gravity towards the flow cone. The water hits the flow cone and is guided further along the outer wall of the diversion section by the flow cone. At the outer wall of the diversion section, the water then flows at least partially downstream against the force of gravity towards the flow pipe. By arranging the second inlet opening at a lower level than the upper edge of the outer wall of the diversion section, it is ensured that when the water is standing, when the drain is at rest, there is always sufficient water in the diversion section and the gas seal of the drain is guaranteed.

[0039] When installed, the rotationally symmetrical deflection section can have a vertical distance from the lower edge of the deflection section to the upper edge of the deflection section of between 4 cm and 10 cm. When installed, the deflection section can have a maximum horizontal extension of between 4 cm and 7 cm.

[0040] The deflection section can essentially be designed as a hollow cone.

[0041] 1 By designing the diversion section as a hollow cone, it is possible to direct the essentially laminar water jet, which flows under gravity through the flow area and the second inlet opening towards the inside of the hollow cone tip, onto the center of the inside of the hollow cone tip. Dirt and deposits that collect in the cone tip are thus impacted by the water jet and carried by the water against gravity out of the hollow cone towards the flow pipe. Designing the diversion section as a hollow cone thus ensures extremely long service life and ease of maintenance of the drain.

[0042] The second inlet opening can be formed eccentrically in the hollow cone. The outer wall of the deflection section can be made of plastic, for example. It is also possible for the outer wall of the deflection section to be made of corrosion-resistant metal. A combination of several materials is also conceivable.

[0043] The outer wall from the lower edge of the diversion section downstream may lead to a level which is at least 30 mm higher than the level of the lower edge of the diversion section.

[0044] This ensures that in a stable condition, when no new water is supplied through the first inlet opening and water is standing in the diversion section, a water column of at least 30 mm from the lower edge of the diversion section is present in the first section. This ensures sufficient gas

[0045] 1 sulfur barrier between the first inlet opening and the cation downstream of the flow pipe.

[0046] A raised area can be located downstream of the flow pipe. The raised area can have an upper edge which is at a vertical distance from a lower edge of the deflection section of between 4.5 cm and 7 cm. The upper edge of the raised area can have a vertical distance from the lower edge of the deflection section of substantially 5 cm. The upper edge of the raised area is formed at a higher level than the lower edge of the deflection section. As the water flows through the flow pipe, it overcomes a level difference of between 4.5 cm and 7 cm, in particular 5 cm, from the lower edge of the deflection section to the upper edge of the raised area. The pipe downstream of the raised area has a lower edge which is arranged at a lower level than the upper edge of the raised area.After overcoming the elevation, the water falls by gravity to the lower edge of a pipe downstream of the elevation, which is located at a lower level than the upper edge of the elevation. The elevation ensures that, when water is still, a water column of between 4.5 cm and 7.5 cm, in particular 5 cm, forms from the lower edge of the diversion section. This ensures reliable odor trapping despite a low siphon height.

[0047] It is possible for the conical region to have a slope of between 1° and 8° relative to the first axis of rotational symmetry. It is also possible for the conical region to have a slope of substantially 5° relative to the first axis of rotational symmetry.

[0048] Such a gradient ensures that the water in the flow area between the first inlet opening and the second inlet opening can be sufficiently accelerated, and that a sufficient volume flow can be conducted from the first opening through the flow area to the second inlet opening. Furthermore, such a gradient ensures that the water flows essentially laminarly through the flow area. Thus, such a gradient ensures a high water flow velocity.

[0049] The object of the invention is further achieved by a washbasin with a drain as described above. The washbasin can be designed with a radius of 3 mm to 9 mm in the area of ​​the first inlet opening of the drain. The washbasin can also be designed with a radius of essentially 6 mm in the area of ​​the first inlet opening of the drain. The first inlet opening connects to the base of the washbasin and thus enables a laminar flow of water through the first inlet opening into the drain and the flow area.

[0050] A sink with this type of drain is low-maintenance and durable. By creating this type of radius in the sink, the water can advantageously flow from the sink through the first inlet opening into the flow area, where it can be accelerated, guided through the diversion section, and finally drained away.

[0051] The sink can be a hand basin. It is also possible that the sink is used for industrial purposes. In this case, the sink is correspondingly larger.

[0052] The object of the invention is also achieved by a

[0053] : for draining water. The water can be drained through a drain as described above. The water can also be drained through a sink as described above. The procedure includes the following steps:

[0054] Introducing water through a first inlet opening into a flow area,

[0055] Directing the water through the flow area,

[0056] Guiding the water from the flow area through a second inlet opening into a deflection section, wherein the first inlet opening is in particular larger in cross-section than the second inlet opening,

[0057] Diverting the water in the diverting section, wherein the diverting section is curved and has in cross section an outer wall with an outer radius and an inner wall with an inner radius, wherein the outer radius is larger than the inner radius, guiding the water into a flow pipe.

[0058] In the process, the water is accelerated in the flow area.

[0059] Such a process is simple and safe to implement, and accelerating the water in the flow area prevents deposits from forming at the low point of the diversion section and clogging the diversion section. Essentially, the process has the same advantages as the previously described process.

[0060] Through the drain, an essentially liquid medium can be

[0061] It is possible that the essentially liquid medium

[0062] : and contains gaseous components. The essentially

[0063] The medium can be water, for example. Soap or dirt, for example, can be dissolved in the water. It is possible that the water contains solid dirt particles that are carried by the water through the drain and the siphon. "Water" therefore refers to a substantially liquid medium that consists essentially of water, but may well contain other components such as dirt particles or soap.

[0064] In the process, the water can be introduced eccentrically into the deflection section through the second inlet opening, so that the water is introduced into the deflection section in cross-section closer to the outer wall than to the inner wall.

[0065] This ensures that the water flows at a high velocity along the outer wall of the diverter. This prevents deposits from forming at the lowest point of the diverter. The process essentially has the same advantages as a drain or a sink as described above.

[0066] Due to the eccentric arrangement of the second inlet opening in the deflection section, a water flow can form on the outer wall of the deflection section and an air bubble can form on the inner wall of the deflection section. It is possible that there is an air space within the outlet next to the flow area which is filled with air when the water is at rest in the deflection section. When water is led through the flow area and then through the second inlet opening into the deflection section, the air from the air space next to the flow area can reach the inner wall of the deflection section. This creates a water flow with a high speed in the area of ​​the outer wall of the deflection section and an air bubble in the area of ​​the inner wall of the deflection section when the water is flowing.

[0067] J i a drainage capacity of 30 litres per minute can be achieved .

[0068] The method may comprise the further step of directing the water through the flow pipe to a level which is at least 30 mm higher than the level of a lower edge of the deflection section.

[0069] This process step ensures that, after the process is completed and the water comes to a standstill in the diversion section, a water column of at least 30 mm remains in the diversion section. This ensures reliable gas and odor sealing.

[0070] In the process, in a further step, the

[0071] Water is directed over a raised area downstream of the flow pipe. The raised area can be one of the types described above.

[0072] The invention is explained in more detail with reference to the following figures.

[0073] It shows :

[0074] Figure 1 : A cross-section of a washbasin with a drain with a siphon with standing water,

[0075] Figure 2 : a cross-section of a washbasin with a drain with a siphon with flowing water,

[0076] Figure 3 : a cross-section of a washbasin with a drain with a siphon with standing water and a rounded wall,

[0077] Figure 4 : a cross-section of a washbasin with a drain with a siphon with standing water and a cylindrical flow area,

[0078] 1 5 : a cross-section of a washbasin with a drain with a siphon with standing water and a flow area which is partly cylindrical and partly conical,

[0079] Figure 6 : a detailed view of a cross-section of a washbasin with a drain with a siphon with flowing water,

[0080] Figure 7 : a schematic cross-section of a drain with a hollow cylinder as a deflection section,

[0081] Figure 8: a schematic cross-section of a drain with a hollow cylinder with rounded lower edges as a deflection section, Figure 9: a schematic cross-section of a drain with a deflection section, the cross-section of which is tapered in a direction against the force of gravity,

[0082] Figure 10: a schematic cross-section of a drain with a deflection section, the cross-section of which is widened in a direction counter to gravity,

[0083] Figure 11: a schematic cross-section of a drain with a deflection section which includes a flow cone,

[0084] Figure 12: a schematic cross-section of a drain with a deflection section, which is designed as a hollow cone,

[0085] Figure 13: a schematic cross-section of a drain with a deflection section and a flow pipe, which has a substantially horizontal axis of rotational symmetry.

[0086] Figure 1 shows a cross-section of a wash basin 1 with a drain 2 with a siphon 3 with standing water. The drain 2 is arranged under the wash basin 1. The drain 2 has a first inlet opening 4 and a second inlet opening 5. A flow area 6 is arranged between the first inlet opening 4 and the second inlet opening 5. The second inlet opening 5 is smaller in cross-section than the first inlet opening 4. The flow area 6 is conical and tapers from the first inlet opening 4 to the second inlet opening 5. The siphon 3 has a deflection section 7. The deflection section 7 has an outer wall 8 and an inner wall 9 in cross-section. The inner wall 9 has an inner radius and the outer wall 8 has an outer radius. The outer radius is larger than the inner radius. The second inlet opening 5 is formed eccentrically in the cross section of the deflection section 7.The second inlet opening 5 is located closer to the outer wall 8 than to the inner wall 9. The siphon 3 has a flow pipe 10 which is formed downstream of the deflection section 7. The first inlet opening 4 has a wall 13. The wall 13 has an angle of 100° from the bottom of the wash basin 1 to the drain 2. In order to get from the wash basin 1 to the drain 2, the water therefore flows over an edge of the wall 13 or past the edge of the wall 13. The upper edge 14 of the first inlet opening 4 is spaced from the lower edge 15 of the deflection section 7 by a vertical distance 16 of 8 cm. The flow region 6 has a rotational symmetry axis 11. The first inlet opening 4 and the second inlet opening 5 are circular. The flow pipe 10 has a second rotational symmetry axis 12. The second rotational symmetry axis 12 intersects the first rotational symmetry axis 11 at an angle 25 of 30°.The first axis of rotational symmetry 11 is aligned essentially vertically. Standing water is formed in the deflection section 7, the flow pipe 10 and the flow region 6. The conical region of the flow region 6 has a gradient of essentially 5° to the first axis of rotational symmetry 11. An air space 17 is located next to the flow region 6. When water is guided through the flow region 6 and subsequently through the second inlet opening 5 into the deflection section 7, the air from the air space 17 next to the flow region 6 can reach the inner wall 9 of the deflection section 7. Downstream of the flow pipe 10 there is an elevation 20 with an upper edge 21 of the elevation 20. The upper edge 21 of the elevation 20 has a vertical distance 22 from the lower edge 15 of the deflection section 7 of 6.5 cm. Thus, from the lower edge 15 of the deflection section 7, a water column of essentially 6.5 cm is formed in the siphon 3.The first inlet opening 4 is circular and has a diameter (not shown) of 3 cm. The second inlet opening 5 is circular and has a diameter (not shown) of 1.9 cm. The first inlet opening 4 and the second inlet opening 5 are spaced apart by a vertical distance of 6.4 cm.

[0087] Figure 2 shows a cross section of a wash basin 1 with a drain 2 with a siphon analogous to Figure 1. Differently shown than in Figure 1, in Figure 2 the water flows from the wash basin 1 through the first inlet opening 4, the flow area 6, the second inlet opening 5 into the deflection section 7 and 1 c Deflection section 7 into the flow pipe 10 and from the

[0088] I upstream pipe 10 into the further sewer system. The second inlet cj 5 is formed eccentrically in the deflection section 7.

[0089] The second inlet opening 5 is located closer to the outer wall 8 than to the inner wall 9. This ensures that the water accelerated in the flow area flows through the deflection section 7 close to the outer wall 8. This prevents deposits from forming at the lowest point of the deflection section 7. An air space 17 is located next to the flow area 6. When water is guided through the flow area 6 and then through the second inlet opening 5 into the deflection section 7, the air from the air space 17 next to the flow area 6 can reach the inner wall 9 of the deflection section 7. The conical area of ​​the flow area 6 has a gradient of essentially 5° to the first axis of rotational symmetry 11. The dimensions, distances and angles in Figure 2 correspond to the dimensions, distances and angles in Figure 1. Figure 3 shows a cross-section of a washbasin 1 with a drain 2 with a siphon with standing water analogous to Figure 1 .Unlike in Figure 1, the wall 13 of the first inlet opening 4 of the outlet 2 in Figure 3 is rounded. The conical region of the flow region 6 has a gradient of essentially 5° to the first axis of rotation symmetry 11. An air space 17 is located next to the flow region 6. When water is guided through the flow region 6 and then through the second inlet opening 5 into the deflection section 7, the air from the air space 17 next to the flow region 6 can reach the inner wall 9 of the deflection section 7. The first inlet opening 4 is circular and has a diameter 23 of 3 cm. The second inlet opening 5 is circular and has a diameter 24 of 1.9 cm. The dimensions, distances and angles in Figure 3 correspond to the dimensions, distances and angles in Figures 1 i.

[0090] Figure 4 shows a cross-section of a wash basin 1 with a drain 2 with a siphon with standing water, similar to Figures 1 and 3. Unlike in Figures 1 and 3, the flow area 6 in Figure 4 is cylindrical. An air space 17 is located next to the flow area 6. When water is guided through the flow area 6 and subsequently through the second inlet opening 5 into the deflection section 7, the air from the air space 17 next to the flow area 6 can reach the inner wall 9 of the deflection section 7. The dimensions and distances in Figure 4 essentially correspond to the dimensions and distances in Figures 1 - 3. Unlike in Figures 1 - 3, in Figure 4 the first inlet opening 4 and the second inlet opening 5 have the same diameter 23, 24 of 1.9 cm.

[0091] Flow region 6 is thus cylindrical, the cylinder having a diameter of 1.9 cm and a height of 6.4 cm.

[0092] Figure 5 shows a cross-section of a wash basin 1 with a drain 2 with a siphon with standing water analogous to Figures 1, 3 and 4. Unlike in Figures 1, 3 and 4, the flow region 6 in Figure 5 is partly cylindrical and partly conical. An upper section 18 of the flow region 6 is cylindrical. A lower section 19 of the flow region 6 is conical. The upper section 18 of the flow region 6 is arranged downstream of the first inlet opening 4. The lower section 19 of the flow region 6 is arranged downstream of the upper section 18 of the flow region 6. The second inlet opening 5 is formed downstream of the lower section 19 of the flow region 6. By ( sr-like division of the flow area 6 into an upper i Ltt 18 , which is essentially cylindrical

[0093] : a lower section 19 which is conical in shape ensures that the upper section 18 can be easily reached and cleaned by a cleaning person using a cleaning tool through the first inlet opening 4 and that the water in the lower section 19 of the flow area 6 is sufficiently accelerated. Next to the flow area 6 there is an air space 17. When water is led through the flow area 6 and then through the second inlet opening 5 into the deflection section 7, the air from the air space 17 next to the flow area 6 can reach the inner wall 9 of the deflection section 7. The first inlet opening 4 is circular in shape and has a diameter 23 of 3 cm. The second inlet opening 5 is circular in shape and has a diameter 24 of 1.9 cm. The dimensions, distances and angles in Figure 5 correspond to the dimensions and distances in Figures 1 to 3 .Figure 6 shows a detailed view of a cross-section of a wash basin 1 with a drain 2 with a siphon with flowing water, analogous to Figure 2. The conical region of the flow region 6 has a gradient of essentially 5° to the first axis of rotational symmetry 11. The water flows laminarly through the conical region of the flow region 6 out of the second inlet opening 5. As a result, the water reaches a high flow velocity of over 2 m / s. This prevents deposits from forming in the base of the deflection section 7 of the siphon 3. Next to the flow region 6 there is an air space 17. When water is guided through the flow region 6 and then through the second inlet opening 5 into the deflection section 7, the air from the air space 17 next to the flow region 6 can reach the inner wall 9 of the deflection section 7. This creates an air bubble which forms on the inner wall 9 of the enclosure.

[0094] ; section 7, while the water flows with high velocity along the outer wall 8 of the deflection section. Furthermore, a discharge capacity of 30 l / s can be achieved. The dimensions, distances, and angles in Figure 3 correspond to the dimensions and distances in Figures 1 to 3 and 5.

[0095] Figure 7 shows a schematic cross section of a drain 2 with a hollow cylinder as a deflection section 7. The deflection section comprises the outer wall 8. The drain 2 is arranged below the wash basin 1 and has a siphon 3. The drain 2 has a first inlet opening 4 and a second inlet opening 5. A flow region 6 is arranged between the first inlet opening 4 and the second inlet opening 5. The second inlet opening 5 has a smaller cross section than the first inlet opening 4. The flow region 6 is conical and tapers from the first inlet opening 4 to the second inlet opening 5. The siphon 3 has a deflection section 7.

[0096] The deflection section 7 has an outer wall 8 and an inner wall 9 in cross-section. The inner wall 9 of the deflection section 7 is the outer wall of the flow region 6. The deflection section 7 is partially defined by the outer wall 8 of the deflection section 7. Due to the outer wall 8, the deflection section 7 is designed as a hollow cylinder. The second inlet opening 5 is formed centrally in the cross-section of the hollow cylinder.

[0097] The siphon 3 has a flow pipe 10, which is formed downstream of the deflection section 7. The flow pipe 10 has a second rotational symmetry axis 5, which is formed vertically in the installed state. The flow area 6 has a rotational symmetry axis 11, which is formed vertically. The first rotational symmetry axis 11 and the second ro-

[0098] 1 ^Symmetry axis 12 are essentially identical. The deflection section 7 has a third rotational symmetry axis 28. The first rotational symmetry axis 11, the second rotational symmetry axis 12 and the third rotational symmetry axis 28 are essentially identical.

[0099] The first inlet opening 4 has a wall 13. The wall 13 has an angle of 100° from the bottom of the wash basin 1 to the drain 2. In order to get from the wash basin 1 into the drain 2, the water therefore flows over an edge of the wall 13 or past the edge of the wall 13. The upper edge 14 of the first inlet opening 4 is spaced from the lower edge 15 of the deflection section 7 by a vertical distance 16 of 8 cm. The first inlet opening 4 and the second inlet opening 5 are each circular. The conical region of the flow region 6 has a gradient of essentially 5° to the first axis of rotational symmetry 11, to the second axis of rotational symmetry 12 and to the third axis of rotational symmetry 28. Next to the flow area 6 there is an air space 17 .When water is directed through the flow area 6 and subsequently through the second inlet opening 5 into the deflection section 7, the air from the air space 17 adjacent to the flow area 6 can reach the inner wall 9 of the deflection section 7. The outer wall 8 of the deflection section 7 has a vertical extension 29 of 3 cm from an upper edge 27 of the outer wall 8 of the deflection section 7 to a lower edge of the deflection section 15. The outer wall 8 of the deflection section 7 has a maximum diameter 31 of 3 cm.

[0100] The first inlet opening 4 is circular and has a diameter 23 of 3 cm. The second inlet opening 5 is circular and has a diameter 24 of 1.9 cm. The first inlet opening 4 and the second inlet opening 1 are separated by a vertical distance of 6.4 cm.

[0101] Figure 8 shows a schematic cross-section of a drain 2 with a hollow cylinder as the outer wall 8 of the deflection section 7, analogous to Figure 7. Unlike in Figure 7, in Figure 8 the lower edges of the hollow cylinder are rounded.

[0102] The dimensions and distances in Figure 8 correspond to the dimensions and distances in Figure 7 .

[0103] Figure 9 shows a schematic cross-section of a drain 2 analogous to Figure 8. Unlike in Figure 8, in Figure 9 the outer wall 8 of the deflection section 7 is bevelled. In a direction counter to gravity, the deflection section 7 is tapered in the upper region of the deflection section 7. The cross-section of the deflection section 7 is smaller at the upper edge 27 of the deflection section 7 than in a region below the upper edge 27 of the deflection section. The deflection section 7 has a maximum diameter 31 of 5 cm. The dimensions and distances in Figure 9 correspond to the dimensions and distances in Figures 7 and 8.

[0104] Figure 10 shows a schematic cross-section of a drain 2 analogous to Figures 8 and 9. Unlike in Figures 8 and 9, the cross-section of the deflection section 7 is widened in a direction counter to gravity. The outer wall 8 of the deflection section 7 is beveled. The deflection section 7 has a maximum diameter 31 of 6 cm. The other dimensions and distances in Figure 10 correspond to the dimensions and distances in Figures 7, 8 and 9.

[0105] Figure 11 shows a schematic cross-section of an outlet 2 analogous to Figure 11. Unlike in Figure 11, the wall 8 of the deflection section 7 of the outlet 2 in Figure 11 has a cone 30. The water can flow from the flow region 6 of the second inlet opening 5 essentially laminarly in the direction of gravity towards the flow cone 30. The water strikes the flow cone 30 and is guided by the flow cone 30 along the outer wall 8 of the deflection section 7. At the outer wall 8 of the deflection section 7, the water then flows at least partially against the force of gravity downstream in the direction of the flow pipe 10.

[0106] The dimensions and distances in Figure 11 correspond to the dimensions and distances in Figure 10 .

[0107] Figure 12 shows a cross-section of a drain 2 analogous to Figures 7 to 11. Unlike in Figures 7 to 11, the deflection section 7 in Figure 12 is designed as a hollow cone. The tip of the hollow cone points in the direction of gravity. The second inlet opening 5 is formed centrally in the deflection section 7. An essentially laminar water jet, which flows in the direction of gravity through the flow region 6 and the second inlet opening 5 in the direction of the hollow cone tip to the inside of the hollow cone, is directed centrally onto the hollow cone tip. Dirt and deposits which form in the hollow cone tip are thus directly impacted by the water jet and carried by the water against the force of gravity out of the hollow cone of the deflection section 7 in the direction of the flow pipe 10. Dirt and deposits collect in the hollow cone at the point where the water jet can be applied when the drain is used again.The design of the deflection section 7 as a hollow cone ensures an extremely long service life and ease of maintenance of the drain.

[0108] The outer wall 8 of the deflection section 7 has a maximum

[0109] 1 waters 31 of 6 cm. The other dimensions and

[0110] : in Figure 112 the dimensions and distances c correspond to Figures 7 to 11 .

[0111] Figure 13 shows a schematic cross section of a process

[0112] 2 analogous to Figure 7 . Unlike in Figure 7, the second rotational symmetry axis 12 of the flow pipe 10 is horizontal. The angle 25 between the first rotational symmetry axis 11 and the second rotational symmetry axis 12 is 90 °. The water can thus flow from the washbasin 1 into the first inlet opening 4, through the flow region 6 and the second inlet opening 5 into the deflection section 7. The water can flow over the upper edge 27 of the outer wall 8 of the deflection section 7 and falls by gravity towards the flow pipe 10. Since the angle 25 between the first rotational symmetry axis 11 of the flow area 6 and the second rotational symmetry axis 12 of the flow pipe 10 is 90 °, the water is then deflected by 90 ° and flows along the second rotational symmetry axis 12 of the flow pipe 12 into the further

[0113] Sewerage .

Claims

Patent claims 1. Drain (2) with a siphon (3), comprising - a first inlet opening (4) , - a second inlet opening (5), wherein the second inlet opening (5) is located downstream of the first inlet opening (4) and wherein the first inlet opening (4) is in particular larger in cross-section than the second inlet opening (5), - a flow area (6) which connects the first inlet opening (4) and the second inlet opening (5), wherein the flow area (6) is designed so that water can flow through it, a deflection section (7) which is located downstream of the second inlet opening (5), wherein the deflection section (7) is curved and has in cross-section an outer wall (8) with an outer radius and an inner wall (9) with an inner radius, wherein the outer radius (8) is designed to be larger than the inner radius, - a flow pipe (10) which is located downstream of the deflection section (7), characterized in that the flow region (6) is conically shaped and tapers in cross-section, in particular in the flow direction of the water.

2. Drain (2) with a siphon (3), in particular according to claim 1, comprising - a first inlet opening (4) , - a second inlet opening (5), wherein the second inlet opening (5) is located downstream of the first inlet opening (4) and wherein the first inlet opening (4) is in particular larger in cross-section than the second inlet opening (5), - a flow area (6) which connects the first inlet opening (4) and the second inlet opening (5), wherein the flow area (6) is designed so that water can flow through it, a deflection section (7) which is located downstream of the second inlet opening (5), wherein the deflection section (7) is curved and has in cross section an outer wall (8) with an outer radius and an inner wall (9) with an inner radius, wherein the outer radius is larger than the inner radius, - a flow pipe (10) which is located downstream of the deflection section (7), characterized in that the second inlet opening (5) is formed eccentrically in the deflection section (7) so that in cross-section it is located closer to the outer wall (8) than to the inner wall (9).

3. Drain (2) according to one of claims 1 or 2, wherein the flow region (6) has a first rotational symmetry axis (11) and wherein the flow pipe (10) has a second rotational symmetry axis (12), wherein the second rotational symmetry axis (12) intersects the first rotational symmetry axis (11) at an angle of 20° to 60° and preferably intersects at an angle of substantially 45°.

4. Drain (2) according to one of the preceding claims, characterized in that the first inlet opening (4) is designed in cross-section substantially 1.1 times to 2.5 times as large as the second inlet opening (5).

5. Drain (2) according to one of the preceding claims, wherein a wall of the first inlet opening (4) has a cross-sectional curvature with a radius of 3 mm to 9 mm and preferably with a radius of substantially 6 mm.

6. Drain (2) according to one of the preceding claims, wherein an upper edge (14) of the first inlet opening (4) and a lower edge (15) of the deflection section (7) have a vertical distance (16) of at least 4 cm and at most 27 cm, in particular at most 11 cm and particularly preferably at most 9 cm.

7. Drain (2) according to one of the preceding claims, wherein the deflection section (7) is designed such that a liquid medium can be deflected in at least two different directions by the deflection section (7).

8. Drain (2) according to one of claims 3 to 7, wherein the deflection section (7) is formed substantially rotationally symmetrical about a third rotational symmetry axis (28) and wherein in particular a liquid medium in the deflection section (7) is deflectable in particular in a range of 360° around the third rotational symmetry axis (28), wherein the third rotational symmetry axis (28) is preferably substantially identical to the first rotational symmetry axis (11) • 9. Drain (2) according to one of claims 7 to 8, wherein the deflection section (7) is essentially designed as a hollow cone.

10. Drain (2) according to one of claims 6 to 9, wherein the outer wall (8) leads downstream from the lower edge (15) of the deflection section (7) to a level which is at least 30 mm higher than the level of the lower edge L5) of the deflection section (7) . :}runner (2) according to one of the preceding claims, wherein the conical region has a gradient of between 1° and 8° to the first rotational symmetry axis (11) and in particular substantially a gradient of 5° to the first rotational symmetry axis (11).

12. Wash basin (1) with a drain (2) according to one of claims 1 to 11, wherein in particular the wash basin (1) is formed in the region of the first inlet opening (4) of the drain (2) with a radius of 3 mm to 9 mm and preferably with a radius of substantially 6 mm.

13. A method for draining water, in particular through a drain (2) according to one of claims 1 to 11, preferably from a washbasin (1) according to claim 12, comprising the following steps: Introducing water through a first inlet opening (4) into a flow area (6), - guiding the water through the flow area (6), - guiding the water from the flow area (6) through a second inlet opening (5) into a deflection section (7), wherein the first inlet opening (4) is in particular larger in cross-section than the second inlet opening (5), - deflecting the water in the deflection section (7), wherein the deflection section (7) is curved and has in cross-section an outer wall (8) with an outer radius and an inner wall (9) with an inner radius, wherein the outer radius is larger than the inner radius, - guiding the water into a flow pipe (10), whereby the water is accelerated in the flow area (6).

14. A method for draining water according to claim 13, in particular through a drain (2) according to one of claims 1 to 11, preferably from a washbasin (1) according to claim 9, comprising the following steps: - introducing water through a first inlet opening (4) into a flow area (6), Directing the water into the flow area (6) , - guiding the water from the flow area (6) through a second inlet opening (5) into a deflection section (7), wherein the first inlet opening (4) is in particular larger in cross-section than the second inlet opening (5), - deflecting the water in the deflection section (7), wherein the deflection section (7) is curved and has in cross-section an outer wall (8) with an outer radius and an inner wall (9) with an inner radius, wherein the outer radius is larger than the inner radius, - guiding the water into a flow pipe (10), wherein the water is introduced eccentrically into the deflection section (7) through the second inlet opening (5) so that the water is introduced into the deflection section (7) closer in cross-section to the outer wall (8) than to the inner wall (9).

15. Method according to one of claims 13 to 14, comprising the further method step: - guiding the water through the flow pipe (10) to a level which is at least 30 mm higher than the level of a lower edge (15) of the deflection section (7).

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