CH706596B1 - Odor trap for a sanitary water runoff. - Google Patents

Abstract

An odor trap (10) for a sanitary water drain, in particular for a urinal, comprising an inlet (12) with at least one opening (16) to a drain (16) for sanitary water, a tubular drain (30) provided with an upper end (36) connects to the inlet (12), wherein the tubular drain (30) encloses the drain (16). In the drain (30), a sealing body (50) is arranged and attached on the inlet side. According to the invention, the sealing body (50) is arranged at least partially in the tubular outflow (30), the sealing body (50) filling the cross section of the outflow (30) and sealingly abutting the tubular outflow (30) in a contact region (54).

Description

The invention relates to an odor trap for a Sanitärwasserabfluss according to the preamble of claim 1.

From the published patent EP 1 076 739 A1 an odor trap for a urinal is known. This includes a replaceable pot for insertion into the urinal, a lid for covering the pot, the lid having an opening for introducing urine into the pot. Into the pot protrudes a baffle to retain channel odor from drain lines. In the pot for collecting urine floats an odor barrier, which closes the opening in the lid. A disadvantage of the described odor trap is that the float is pressed by its buoyancy in the urine to the lid. For this purpose, a certain amount of urine must be steadily retained, which ensures the buoyancy. Prolonged inactivity causes urine to evaporate, causing the float to sink and release the opening. In order to produce a sufficient buoyancy of the float, this must also have an appropriate size. However, if the buoyancy is too strong, the buoyant body will not be pushed down by the urine, which causes the urine to run off and form odors.

Another system of an odor trap with a check valve is shown in EP 1 579 133. The check valve has an inlet section in the form of a self-supporting trough-shaped section. Connected to the inlet portion is an outlet portion of a flexible, resilient material. The outlet section has a flat, flexible, compliant strip with a high inherent degree of flexibility. The outlet portion further includes a separate component from the strip which provides a complementary surface against which the lower end of the flexible strip is capable of sealing. However, this check valve has the disadvantage that the discharge amount of the used water is limited by the long and narrow outlet section. There is also the risk that solids will stick to or in the elongated outlet section and thus prevent a gas-tight closure of the valve. In addition, there may be re-vulcanization of the material, especially during storage. The strips of the outlet section stick together. These check valves also have a relatively large size. This requires a correspondingly large installation space. Finally, such odor traps can quickly become leaky if they dry out on prolonged non-use.

The present invention is therefore based on the object to provide an improved odor trap for a Sanitärwasserabfluss, which is simple and inexpensive, reliable and has a compact height.

In addition, a dehydration of the sanitary water drain due to prolonged non-use should not cause sewerage odors can pass the trap.

This object is achieved by an odor trap for a Sanitärwasserabfluss having the features specified in claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

The odor trap for a Sanitärwasserabfluss, in particular for a urinal, includes an inlet with at least one opening to a drain pipe, short drain, for sanitary water and a tubular drain, which connects with an upper end to the inlet, wherein the tubular drain the Encloses expiration. The sanitary water flows through the drain and exits from a lower end of the drain. In the drain is a e.g. arranged umbrella-shaped sealing body and attached on the inlet side.

According to the invention, the sealing body is at least partially disposed in the tubular drain, wherein the sealing body fills the cross-section of the drain or approximately fills and sealingly rests in a contact area on the tubular drain.

By the concerns of the sealing body on the inner wall of the drain is prevented in a first state that unpleasant odors from a sewer can pass the trap. The sealing body closes by its shape the entire cross section of the tubular drain. The sealing body forms by its shape, which is adapted to the inner cross section of the drain, a circumferential sealing zone. The sealing zone can be sealed by an interfacial tension. Adhesion forces between the sealing body, the inner wall and the sanitary residual water can also support a gas-tight seal of the odor trap. However, the sealing zone is not dependent on a liquid film. Since drying out of the sealing zone does not have to be prevented or delayed, a short sealing zone and thus a more compact construction of the odor trap are possible.

When entering sanitary water in the odor trap from the inlet side in a second state of the sealing body of the sanitary water is displaced or deformed radially, that a drain cross section for the sanitary water is created and the sanitary water can drain through the odor trap. The deformability of the sealing body allows that even very small amounts of sanitary water or even individual drops can pass through the trap.

Depending on the amount of incoming sanitary water and the elasticity of the sealing body, the release of the outflow takes place in a larger or smaller area. The sealing body is only just so much displaced by the effluent sanitary water that no sewerage odors can pass the trap. Since the size of the discharge cross-section released by the sealing body is regulated by the sanitary water itself, a simple, reliable and cost-effective construction of the odor trap is possible. The low force, which is exerted by the sanitary water pressure on the sealing body, causes a sufficiently large change in the free flow cross-section.

Preferably, the sealing body with the peripheral contact area is dense or gap-forming line or band-shaped on the inner wall or at the lower end of the drain and forms the sealing zone. A line-shaped contact area of the sealing body is sufficient to form a gastight odor trap. Due to the low contact area, gluing of the sealing body with the drain and thus the probability of failure are additionally reduced. A wider contact area results in an even better and more reliable seal, which can still seal gas-tight, for example, even in the case of slight contamination of the contact area.

In a further preferred embodiment, the sealing body has cuts in the contact area, or parts in the contact region of the sealing body are superimposed in a scale.

The subdivision of the sealing area by cuts in smaller sections prevented in case of disturbances, for example. By sticking in an area that the entire odor trap fails. If the parts of the sealing body in the contact area superimposed scale, the individual parts of the scum are moved against each other when flowing through sanitary water. This movement creates a mechanical friction between the individual scale parts, whereby a self-cleaning of the contact area of the odor trap takes place.

Particularly preferably, a circumferential rib is arranged on the sealing body. The rib increases the dimensional stability of the sealing body, whereby it rests evenly against the sealing zone of the tubular drain.

In a further preferred embodiment, the sealing body has a shape which is adapted to the inner contour or to the lower edge of the drain. In this case, the sealing body may have the shape of a ball, a cap, a cone, an ellipsoid or a drop. The sealing body may consist of a half body of the previously described body, wherein it may also be formed as a hollow body. The shape of the sealing body should connect to the tubular drain. For example, previously described shapes may be used with a circular cross-section of the drain. For the reliable drainage of sanitary water, the elasticity or dimensional stability of the sealing body is decisive. The elasticity of the sealing body is determined by the material used and its shape.

In a sealing body, which projects beyond the lower end and the lower edge of the drain, a sealing body with spherical, spherical, conical, ellipsoidal or teardrop shape can be used. In the case of a sealing body which is arranged completely within the tubular outflow, the use of a half-body prevents gases rising from the sewage system from displacing the sealing body and passing the odor trap. In this case, a half-body in an upper part preferably has one of the previously described forms and terminates preferably at the point with the largest circumference of the sealing body with a circumferential edge which forms a flat surface on the underside of the half-body. By using a hollow body which is open at the bottom, a sealing body lying in the tubular drainage is inflated by the sewerage aerosols rising from below, similar to a parachute, and forced against the tubular drainage, whereby an additional sealing effect for sewerage gases is achieved.

Particularly preferably, the sealing body is made at least in the contact region of an elastic and / or thin-walled material and / or the drain comprises at least in the region of the lower end of an elastic element. By elastic, thin-walled materials a rich concern of the sealing body is made possible to the tubular drain. This results in a gas-tight closure of the drain. On the other hand, an elastic, thin-walled material can easily be displaced radially outward by outflowing sanitary water. For large amounts of effluent sanitary water made of elastic, thin-walled material sealing body is particularly strong folded together by sanitary water and thus represents a very low flow resistance in the tubular drain. The sealing body does not hinder the flow of water.

By using an elastic element in the region of the lower end of the drain both a gas-tight closure of the odor trap relative to the sealing body is supported, as well as a kind of overflow formed by the outflow of large amounts of sanitary water, the lower end of the outflow is urged and thus the outflow cross section of the tubular drain additionally increases.

In a preferred embodiment, the sealing body is made of a urine and detergent-resistant plastic, in particular made of silicone and / or of a thermoplastic elastomer (TPE), such as Santoprene® Exxon Mobil, or ethylene-propylene-Diem rubber (EPDM) and / or fine polyethylenes (HDPE). Silicone has the advantage that it can be made very thin-walled and is very elastic. Furthermore, silicone is very resistant to mechanical stress. Silicone, however, can respond to common cleaning and disinfecting agents by rolling and / or with sources, whereas a consisting of an ethylene-propylene-Diem rubber (EPDM) and / or fine polyethylenes (HDPE) sealing body better resistance to cleaning and Having disinfectants. The material of the sealing body must be as resistant to cleaning agents used in the sanitary area, otherwise it may lead to the dissolution or deformation of the sealing body. As a result, it no longer connects to the tubular drain in a gas-tight manner and must be repaired or replaced. It has been shown in practice that advice on cleaning or the prohibition of certain cleaning agents are often disregarded.

In a particularly preferred embodiment, the axial length of the drain is equal to or less than the diameter of the drain. The axial length of the drain is preferably 10 mm to 50 mm, more preferably 20 mm to 35 mm and the diameter of the drain is preferably 10 mm to 50 mm, particularly preferably 20 mm to 35 mm. Due to the low height of the odor trap this can be used to save space in different sanitary facilities. It is also possible, for example, to equip tubless shower cubicles in buildings or sanitary facilities on ships with corresponding stench traps. Also, such odor traps can be used in sink, creating a smaller footprint below the sink for the drain.

In a further preferred embodiment, the diameter of the sealing body is greater than or equal to the diameter of the drain. Due to the at least equal diameter of the sealing body opposite the drain, a gastight closure of the odor trap against sewerage odors is made possible even in the dry state. If the sealing body protrudes from the lower end or the lower edge of the drain, a sealing body is used, which has a larger diameter than the tubular drain and thus covers the entire tubular drain.

Particularly preferably, the sealing body is connected by a first coupling element with the inlet axially elastic. By an axial elastic connection, an axial movement of the sealing body can occur during the inflow of sanitary water into the odor trap, as a result of which impurities in the sealing zone are mechanically removed. In addition, in a further preferred embodiment of the sealing body during the flow of large quantities of sanitary water can be briefly pushed down from the tubular drain, whereby a larger amount of sanitary water can flow.

Preferably, the first coupling element is part of the sealing body and attached to the inlet. In this case, the first coupling element can be coupled to a second coupling element and the second coupling element can be connected to the inlet or to an inlet grille arranged at the inlet. Furthermore, the second coupling element can form a dome which projects beyond the inlet grid. Through the use of coupling elements, the sealing body and the inlet can be permanently connected to each other in a simple manner. By attaching to a dome at the inlet grille, an additional path for a movable in the axial direction, elastic element can be created.

In a further preferred embodiment, the sealing body has a wall thickness which reduces towards the contact area. The wall thickness in the contact region is 0.01 mm to 1 mm, preferably 0.1 mm to 0.5 mm. In the contact region, the sealing body may have a band-shaped section with a width of 1 mm to 10 mm, preferably 3 mm to 5 mm. Due to the decreasing wall thickness of the sealing body to the contact area towards the elasticity of the sealing body is increased, whereby on the one hand improves the gas-tight seal and on the other hand, the flow of sanitary water is promoted by displacement of the sealing body. With large quantities of sanitary water, a discharge cross section can thus be achieved which corresponds approximately to the cross section of the tubular outflow. This is particularly advantageous in the case of what is known as a hybrid urinal, which is generally operated as a waterless urinal, but in addition is rinsed periodically with water, for example via time-controlled water rinsing. Also in applications in sinks or sinks or shower or bathtubs, it is advantageous if a large amount of sanitary water can drain. The small wall thickness of the sealing body in the contact area favors a gas-tight contact with the drain.

In a particularly preferred embodiment, the sealing body on the surface from top to bottom running inlet channels, which end in front of the contact area. Through inlet channels merging Sanitärrestwassermengen is favored, whereby the sanitary water can pass the odor trap faster and more reliable, because a radially inwardly occurring wrinkling occurs. As a result, deposits on the sealing body and the odor in the odor trap are reduced.

In a particularly preferred embodiment, the wall thickness of the tubular drain reduces toward the lower end. There may also be serrated notches at the lower end of the tubular drain. Further, the lower end of the drain may form an inclined plane. This shaping ensures that residual amounts of sanitary water drain better from the odor trap and form less deposits, especially at the lower end of the drain.

In a further preferred embodiment, the diameter of the outflow increases toward the lower end. This design of the drainage pipe favors the outflow of sanitary water by widening the tubular drain at the point at which the sealing body is arranged in the tubular drainage. The influx of sewerage odors is also made difficult even at elevated gas pressure, since the sealing body is pushed with increasing gas pressure against the narrowing upper end of the tubular drain and thus wedged in the drain.

In a preferred embodiment, a fastening system in the form of a rotary, point or bayonet is present at the upper end, with which the odor trap in a sanitary water drain can be fastened. The fastening system has fastening elements such as knobs, beads or grooves, which engage in a corresponding counterpart of the sanitary water drainage. The optional design of the fastening system at the upper end of the tubular odor trap, a precise positioning of the odor trap within the Sanitärwasserabflusses and thereby a gas-tight closure can be ensured. In addition, a simple and quick installation and removal of the odor trap is made possible by the fastening system. By combining for example different fasteners or by the different arrangement of the fasteners at the top of a coding of odor traps against the sanitary water drain can be achieved. As a result, for example, in the case of different requirements of regional licensing authorities or in the case of different requirements for sanitary water drainage, the use of impermissible or false odor traps can be prevented.

In a further preferred embodiment, the tubular drain and / or the inlet is made of polypropylene. Due to its smooth surface, this material absorbs practically no urine, which reduces odor.

The invention will be explained in more detail with reference to drawings. Showing: <Tb> FIG. FIG. 1 shows a vertical section through an odor trap 10 according to the invention for a sanitary water drain with an inlet 12, a tubular outflow 30 and a sealing body 50, which bears against the outlet 30 with a contact region 54; <Tb> FIG. 2a <SEP> a detail view of a band-shaped contact area 54 on the sealing body 50; <Tb> FIG. 2b <SEP> a scale-shaped contact region 54 on the sealing body 50; <Tb> FIG. 2c <SEP> a band-shaped contact region 54 of the sealing body 50 with incisions; <Tb> FIG. 2d <SEP> a band-shaped contact region 54 with a circumferential rib; <Tb> FIG. 3 <SEP> a vertical section through the odor trap 10 with a sealing body 50 movably suspended in the axial direction; <Tb> FIG. 4a <SEP> a vertical section through the odor trap 10 with a first suspension 60; <Tb> FIG. Fig. 4b shows the odor trap 10 with an extended suspension 60 attached to a crest 20 at the inlet 12; <Tb> FIG. 4c <SEP> the odor trap 10 with a directly attached to the inlet 12 sealing body 50; <Tb> FIG. 5 <SEP> Vertical section through the odor trap 10 with a drain 30 whose diameter 44 increases towards the lower end 38; <Tb> FIG. 6a <SEP> a plan view of the inlet 12 of the odor trap 10 with inlet grille 14; <Tb> FIG. 6b + c <SEP> further embodiments of the inlet grille 14 at the inlet 12; <Tb> FIG. FIG. 7 shows a vertical section through the sealing body 50 with wall thickness tapering towards the contact region 54; FIG. <Tb> FIG. 8a <SEP> a side view of the sealing body 50 with inlet grooves 52; <Tb> FIG. 8b <SEP> is a sectional view of the sealing body 50 from above with inlet channels 52; <Tb> FIG. 9 <SEP> Cross sections of the tubular drain 30 with sealing body 50; <Tb> FIG. 10 is a perspective view of the odor trap 10 with notches 54 at the lower end 38 of the drain 30; <Tb> FIG. FIG. 11 shows a vertical section of the odor trap 10 with the wall thickness of a jacket 32 tapering towards the lower end 38 of the outflow 30; FIG. <Tb> FIG. FIG. 12 shows a side view of the odor trap 10 with a spherical sealing body 50, which is arranged partially outside the drain 30; FIG. <Tb> FIG. 13 <SEP> Side views of first coupling elements 62 and corresponding second coupling elements 64; <Tb> FIG. 14a <SEP> is a perspective view of the odor trap 10 with nubs as a fastener 46; <Tb> FIG. 14b <SEP> is a perspective view of the odor trap 10 with threaded portions as a fastener 46th

Fig. 1 shows an odor trap 10 for a Sanitärwasserabfluss, in particular for a urinal, which is not equipped with a Wasserspülvorrichtung. However, the odor trap 10 can also be used in a urinal with additional water flushing device. It is also possible to use the odor trap 10 in a urinal trough, a sink or sink, a shower or bath. This particular, if for structural reasons, such as in vehicles, aircraft or ships, or for aesthetic reasons, only a small installation depth for the siphon is given in sanitary water drainage. The odor trap 10 has an inlet 12 with one or more openings 16 for draining sanitary water from the urinal, basin or tub. Sanitary water is any form of used water, urine or rinse water, but also drinking water or other liquids called, which are fed to a sewer. The inlet 12 is preferably dish-shaped and has an inlet grille 14 and a flange 18. The flange 18 preferably has an overhang from the tubular drain 30 of 1 mm to 15 mm. The odor trap 10 can be made, for example for installation in a sanitary water pipe, without protruding flange 18.

Adjoining the inlet 12 is an upper end 36 of the tubular outflow 30. Both parts are preferably made of a plastic such as polypropylene. Various materials may also be used for the inlet 12 and the drain 30. At the upper end 36 fasteners 46 may be attached.

The inlet 12 may be made in one piece, for example by injection molding with the tubular drain 30. But it is also possible to permanently or detachably connect the two parts with known joining techniques such as friction welding, gluing or by a thread. In this case, the jacket 32 of the tubular outflow 30 encloses all openings to the outlet 16, whereby no sewerage odors can flow past the outflow 30. The sanitary water enters the odor trap 10 at the inlet 12, flows through the drain 30 past a sealing body 50 and exits the odor trap 10 at the lower end 38 of the drain 30.

In the drain 30, a sealing body 50 is attached to the inlet 12. The sealing body 50 is fastened centrally at the inlet 12. The sealing body 50 fills the drain 30 in its entire cross section. In this case, it lies against the inner wall 34 of the drain 30 substantially with a contact region 54 and forms a sealing zone 56. In this first state shown in Fig. 1, the sealing body 50 is gas-tight against the inner wall 34 of the drain 30, whereby no sewer odors from lower end 38 ago the odor trap 10 can flow upwards.

The sealing body 50 has a first coupling element 62, which is connected to a second coupling element 64 at the inlet 12. The two coupling elements 62, 64 are designed such that they are easy to connect to each other and no unwanted decoupling takes place in use. The coupling elements 62, 64 form a suspension 60 for the sealing body 50 or directly adjoin it.

The axial length 42 of the odor trap 10 may be less than the diameter 44 of the drain 30. The axial length 42 of the drain 30 is preferably between 10 mm to 50 mm. In order to allow a compact design of Sanitärwasserabflusses, the axial length 42 should be between 20 mm to 35 mm. The diameter of the drain 30 is preferably 10 mm to 50 mm. In order to be used in known sanitary water drains, the diameter should be between 20 mm to 35 mm.

Fig. 2 shows a sealing body 50 in a side view with differently ausgestaltetem contact area 54. In Fig. 2a, the contact portion 54 of the sealing body 50 is designed band-shaped and extends in a uniform width around the sealing body 50 around. The tape has a width of 1 mm to 10 mm. A width between 3 mm and 5 mm has proved particularly advantageous. The wall thickness of the sealing body 50 in the contact region 54 should be as low as possible in order to ensure that the sealing body 50 abuts the inner wall 34 in a gastight manner as possible. However, the contact area 54 must also be sufficiently robust to allow a variety of cycles of movement between sanitary water flow and gas tight closure without failing in either of the functions. This requires depending on the material used of the sealing body 50 has a certain wall thickness. The wall thickness is therefore between 0.01 mm to 1 mm. Wall thicknesses between 0.1 mm to 0.5 mm have been found to be particularly suitable.

2b shows a further embodiment of a contact region 54. In this case, parts of the contact region 54 are superimposed in a scale shape. The individual scales have a width of 3 mm to 20 mm and overlap each other between 5% to 95%. In practice, widths of 5 mm to 12 mm and an overlap of 40% to 60% have proven to be particularly advantageous.

FIG. 2c shows a third embodiment of the contact region 54. This has incisions. The incisions extend from the lower end of the contact region 54 at least approximately vertically over 50% to 80% of the contact region 54.

In Fig. 2d a circumferential rib 66 is disposed on the sealing body 50. The rib 66 is arranged slightly above or in the contact region 54 of the sealing body 50. The rib 66 increases the dimensional stability of the sealing body 50, in particular in the first state when it rests gas-tight against the inner wall 34 of the drain 30.

Fig. 3 shows the odor trap 10 with a tubular drain 30 and suspended sealing body 50. The suspension 60 consists of an at least slightly elastic material, which allows an expansion in the axial direction. Due to the expansion of the sealing body 50 is carried along by flowing sanitary water. As the sanitary water flow decreases, the sealing body 50 is pulled back to its original position by the elastic material. This results in a friction between the inner wall 34 and the sealing body 50, whereby a mechanical cleaning of the contact region 54 takes place.

By the elongation of the suspension 60 in the axial direction, it is also possible to urge the sealing body 50 from the lower end 38 of the drain 30, so that a larger amount of sanitary water can flow through the odor trap 10. The elastic suspension 60 also makes it possible to use a sealing body 50 with a diameter larger than the diameter of the drain 30 (see FIG. 12). In this case, the sealing body 50 is located at the lower end 38 of the drain 30. When measuring the sanitary water of the sealing body 50 is also pushed down and radially inward and are the outflow 30 free.

4, various suspensions 60 of the sealing body 50 are shown. In Fig. 4a, the sealing body 50 is connected via the suspension 60 to the inlet 12. It has been found that the suspension 60 should be arranged centrally on the inlet 12, so that the sanitary water flows around the sealing body 50 evenly and can flow well. The suspension 60 should have the smallest possible radial extent, so as not to affect the Sanitärwasserabfluss.

Fig. 4b shows a longer suspension 60 attached to a crest 20 located at the inlet 12. The dome 20 protrudes beyond the inlet 12. The longer suspension 60 increases the dynamics of the sealing body 50 in the axial direction, whereby the effects described in Fig. 3 are enhanced. Fig. 4c shows a sealing body 50 which is directly connected to the inlet 12, e.g. glued, without additional suspension 60.

Fig. 5 shows the odor trap 10 with tubular drain 30, which widens towards the lower end 38. The diameter 44 of the drain 30 is thus at the upper end 36 at the inlet 12 smaller than at its lower end 38. The sealing body 50 has a shape which is suitable for being in the drain 30 in the first state, if no sanitary water through the Odor trap 10 flows to wedge and thus strengthen the gas-tight closure. When flowing through the odor trap 10 with sanitary water, the sealing body 50 is displaced by the sanitary water and the drain 30 is released. The cross-section of the shared drain 30 depends on the amount of the subsequent sanitary water. The sealing body 50 can be displaced both by an elastic suspension 60 and by an elastic configuration. But it is also possible to design the drain 30 preferably at the lower end 38 elastically, so that, for example, a sealing lip in the contact region 54 is present. It is also possible to use a combination of previously described means for the odor trap 10.

In Fig. 6 embodiments of the inlet 12 are shown. The inlet 12 has concentric drainage openings 16. The drainage apertures 16 may be similar to a slothole along one or more concentric circles. The drain openings 16 are arranged so that they lie within the underlying tubular drain 30. In the middle of the inlet 12, a dome 20 may be arranged, on which the sealing body 50 can be suspended. The drain openings 16 have a size and shape that sanitary water can drain quickly. At the same time the passage of solids, such as valuables or other objects that could violate the contact area 54, should be prevented. The drainage openings 16 can also be arranged, for example, as shown in FIG. 6b with mutually offset slots.

The drainage openings 16 may also, as shown in Fig. 6c, be designed such that with a key (not shown) in the inlet 12 of the odor trap 10 can be intervened. For example, by a rotary movement of the odor trap 10 can be solved and replaced. This is necessary if the sanitary water can no longer run off due to a fault or the odor trap 10 no longer closes gas-tight and must be replaced.

Fig. 7 shows a sealing body 50, which is designed as a hollow body hemispherical or halbellipsoid. The sealing body 50 has a wall thickness which decreases between the first coupling element 62 and the contact region 54. In the region of the first coupling element 62, the wall thickness is 0.5 mm to 15 mm, preferably 2 mm to 5 mm. Towards the contact region 54, the wall thickness of the sealing body 50 decreases and in the contact region 54 amounts to 0.01 mm to 1 mm, preferably 0.1 mm to 0.5 mm. The wall thickness depends on the material used and the geometry of the sealing body 50. Preferably, a material such as silicone is used for the sealing body 50. Other possible materials for the sealing body are thermoplastic elastomers (TPE), such as, for example, Santoprene® or further ethylene-propylene-diem rubbers (EPDM) or fine polyethylenes (HDPE). The materials have the advantage that they can be designed particularly thin-walled and are very elastic. It is also possible to manufacture a sealing body 50 from a variety of materials using a multi-component injection molding process. In this case, for example, in the region of the first coupling element 62, a material can be used which has good Abperl properties for the sanitary water and is inexpensive to manufacture, while in the contact region 54, a thin-walled material with high mechanical strength is required.

Fig. 8 shows inlet channels 52 which extend on the sealing body 50. The inlet grooves 52 are notches which extend on the sealing body 50 in the radial direction from the suspension 60 to or into the contact region 54. The inlet grooves 52 may be arranged rotationally symmetrically on the surface of the sealing body 50. Instead of the indentations, it is also possible for elevations to be arranged on the sealing body 50. It has been shown that between four and twelve inlet channels 52 bring the sanitary water optimally together and favor a rapid outflow. In the case of inlet channels 52, which extend into the contact region 54, individual drops of the sanitary water are sucked into the contact region 54 by capillary effects and passed therethrough. FIG. 8 b shows a section through the sealing body 50 with inlet grooves 52, whereby a smaller wall thickness of the sealing body 50 results in the area of the inlet channels 52.

9 shows a selection of different cross sections for the tubular outflow 30. The cross section of the outflow 30 is preferably circular. However, four-, six- or n-sided cross-sections for the tubular drain can be used. In Fig. 9b, for example, an octagonal cross section is shown. Fig. 9c shows a tubular drain 30 with a meandering jacket. There are other cross-sections with rounded corners or, for example, in ellipsoidal shape possible. In this case, the sealing body 50 is to be provided in a shape which is in each case congruent with the tubular outflow 30.

10 shows the odor trap 10 with serrated notches 40 at the lower end 38 of the drain 30. Depending on the diameter 44 of the drain 30, a plurality of indentations 40 can be arranged rotationally symmetrically about the drain 30. In order to promote the draining of the sanitary water, a serrated notch 40 is preferably attached at a distance of 1 mm to 5 mm. The notches 40 preferably connect to each other. The indentations 40 extend into a point or, as shown in FIG. 10, in a semicircular shape.

Fig. 11 shows another shape of the lower end 38 of the tubular drain 30. In this case, the wall thickness decreases towards the lower end 38 from. The wall thickness of the drain 30 is preferably 1 mm to 5 mm. Against the lower end 38, the wall thickness can extend to a wedge shape, which has a tip or rounded edge at its lower end 38.

Fig. 12 shows a sealing body 50 which is disposed below the drain 30. The sealing body 50 has a spherical shape. However, other forms, such as an ellipsoid or a drop shape, possible. The sealing body 50 may be attached to an elastic suspension 60 or consist of elastic material. It is also possible to combine both variants. In the first state, the sealing body 50 at the lower end 38 of the drain 30 is present. Thus, no sewerage odors can rise up through the drain 30. In the second state, when sanitary water flows through the drain 30, the sealing body 50 is urged radially inward or downward, whereby the sanitary water can drain.

13 shows various first and second coupling elements 62, 64 for the coupling of the sealing body 50 to the inlet 12. In FIG. 13a, the first coupling element 62 has at least approximately a spherical shape and the second coupling element 64 has a corresponding pan shape ,

13b shows a first coupling element 62, with a lamella shape and a second coupling element 64, which has a lamella shape corresponding thereto. It is also possible to design the second coupling element 64, for example tubular.

The previously described embodiments for a first coupling element 62 can also be applied to a second coupling element 64 and vice versa.

Fig. 13c shows a first coupling element 62 which is guided by a dome 20 as a second coupling element 64. In this case, there is a thickening at the end of the first coupling element 62, which is guided through the dome 20, for example during assembly. It is also possible, for example, with an axially extending opening in the second coupling element 64, that the first coupling element 62 can be hooked laterally into the dome 20.

The coupling elements shown in Fig. 13a, b and c (62, 64) are dependent on the material used and the specific design easily or stiff coupled or endkoppelbar. Preferably, the coupling elements used should be smoothly coupled and sluggish endkoppelbar.

Fig. 14 shows systems for attaching the odor trap 10 in a sanitary water drain. The fastening systems can be designed, for example, in the form of a rotary closure, such as a thread or a bayonet closure, as are known, for example, in interchangeable lens cameras, or with a point closure. The fastening system has fastening elements 46, for example in the form of nubs, as shown in FIG. 14a. It is also possible to use grooves, such as in a thread, as fastening elements 46. Walls which are a kind of elongated nubs have proven particularly suitable. The beads are shown in Fig. 14b and may have a partial thread shape. The fastening elements 46 are arranged on the outer surface of the tubular outflow 30, preferably on the upper end 36 or on the sanitary water drain. Opposite corresponding fasteners are available.

Preferably, a plurality of fasteners 46, such as knobs or beads, rotationally symmetrical about the drain 30 are arranged. In order to achieve a gas-tight seal when installing the odor trap 10 in a Sanitärwasserabfluss, two to twelve knobs have been found to be optimal. The nubs engage when screwing into a sanitary water drain in depressions and can also form a bayonet closure. It is also possible for the odor trap 10 by other known means permanently or detachably connected to the sanitary water drain. The odor trap 10 can also be inserted without a fastening system into a corresponding counterpart in the sanitary water drain.

LIST OF REFERENCE NUMBERS

[0062] <Tb> 10 <September> trap <Tb> 12 <September> inlet <Tb> 14 <September> inlet grids <tb> 16 <SEP> Opening to drain <Tb> 18 <September> flange <Tb> 20 <September> summit <tb> 30 <SEP> tubular drain <Tb> 32 <September> coat <Tb> 34 <September> inner wall <tb> 36 <SEP> top end <tb> 38 <SEP> lower end <tb> 40 <SEP> Notches serrated <tb> 42 <SEP> axial length <Tb> 44 <September> Diameter <Tb> 46 <September> fastener <Tb> 50 <September> sealing body <Tb> 52 <September> intake chutes <Tb> 54 <September> contact area <Tb> 56 <September> sealing zone <Tb> 60 <September> suspension <tb> 62 <SEP> first coupling element <tb> 64 <SEP> second coupling element <tb> 66 <SEP> circumferential rib

Claims (18)

1. odor trap (10) for a Sanitärwasserabfluss, in particular for a urinal, comprising - An inlet (12) with at least one opening to a drain (16) for sanitary water A tubular drain (30) which connects to the inlet (12) with an upper end (36), the tubular drain (30) enclosing the drain (16), - A lower end (38) of the drain (30), for the discharge of sanitary water and - A sealing body (50) which is arranged in the drain (30) and attached on the inlet side, characterized marked that the sealing body (50) is arranged at least partially in the tubular outflow (30), wherein the sealing body (50) fills the cross section of the outflow (30) and sealingly abuts the tubular outflow (30) in a contact region (54). 2. odor trap (10) according to claim 1, characterized in that the sealing body (50) with the contact region (54) linear or band-shaped on the inner wall (34) or at the lower end (38) of the outflow (30) is present and a Sealing zone (56) forms. 3. odor trap (10) according to any one of claims 1 or 2, characterized in that the sealing body (50) has a shape which is adapted to the inner contour of the drain (30) and the sealing body (50) has the shape of a ball, a Has calotte, a cone, an ellipsoid or a teardrop shape and wherein the sealing body (50) is formed as a half-body. 4. odor trap (10) according to one of claims 1 to 3, characterized in that the sealing body (50) is made at least in the contact region (54) made of an elastic material. 5. odor trap (10) according to claim 4, characterized in that the sealing body (50) made of a urine and detergent-resistant plastic, in particular of silicone or of a thermoplastic elastomer (TPE) or ethylene-propylene-Diem rubber (EPDM) or made of fine polyethylenes (HDPE). 6. odor trap (10) according to one of claims 1 to 5, characterized in that the axial length (42) of the outflow (30) is less than the inner diameter (44) of the outflow (30), wherein the axial length (42). the outflow is preferably 10 mm to 50 mm, particularly preferably 20 mm to 35 mm, and the diameter of the outflow (30) is preferably 10 mm to 50 mm, in particular 20 mm to 35 mm. 7. odor trap (10) according to one of claims 1 to 6, characterized in that the diameter of the sealing body (50) is less than or equal to the diameter (44) of the tubular outflow (30). 8. odor trap (10) according to one of claims 1 to 7, characterized in that the sealing body (50) by a first coupling element (62) with the inlet (12) is axially elastically connected. 9. odor trap (10) according to claim 8, characterized in that the first coupling element (62) is part of the sealing body (50) and is secured to the inlet (12). 10. odor trap (10) according to claim 9, characterized in that the first coupling element (62) on a second coupling element (64) can be coupled and the second coupling element (64) with the inlet (12) or with one at the inlet (12). arranged inlet grate (14) is connected. 11. odor trap (10) according to one of claims 1 to 10, characterized in that the sealing body (50) has a wall thickness, which is reduced to the contact area (54), wherein the wall thickness in the contact area (54) 0.01 mm to 1 mm, preferably 0.1 mm to 0.5 mm. 12. odor trap (10) according to claim 11, characterized in that, the sealing body (50) on the surface from top to bottom extending inlet grooves (52) which terminate in the contact area. 13. odor trap (10) according to one of claims 1 to 12, characterized in that reduces the wall thickness of the drain (30) to the lower end (38) out. 14. odor trap (10) according to one of claims 1 to 13, characterized in that the diameter (44) of the outflow (30) to the lower end (38) increases towards. 15. odor trap (10) according to any one of claims 1 to 14, characterized in that at the upper end (36), a fastening system in the form of a rotary, point or bayonet closure is provided with which the odor trap (10) attachable in a sanitary water drain is. 16. odor trap (10) according to claim 15, characterized in that the fastening system has fastening elements (46) such as knobs, beads or grooves, which engage in corresponding counterparts on Sanitärwasserabfluss. 17. odor trap (10) according to one of claims 1 to 16, characterized in that the tubular drain (30) and / or the inlet (12) is made of polypropylene. 18. Urinal, in particular waterless urinal, with an odor trap (10) according to one of the preceding claims.