EP2365144B1 - Draining siphon - Google Patents

Description

The present invention relates to a suction siphon for a flush-mounted installation according to the preamble of claim 1, which is particularly useful for toilet urinals and the like ..

Siphonic siphons for drainage installations are mainly known for urinal drainage.

That's how it shows EP 1 170 0426 A1 a Absaugsiphon with an S-shaped flow channel. The disadvantage of this, however, is that this Absaugsiphon is relatively large dimensions and consumes a lot of water. For the use of siphoning siphons in flush-mounted installations has been developed to reduce space such snail-shaped flow channel. The siphoning siphon of DE 244 76 95 A1 is designed as inserted into a mounting housing and has a teardrop-shaped cross-section of the flow channel. From the DE 195 45 907 A1 is a Absaugsiphon known, in addition to the helical turn additionally has a convolution and a pivotable outlet port, whereby this Absaugsiphon is relatively bulky. These two known Absaugsiphons also require a relatively large amount of rinse water.

In order to keep the siphoning siphon for flush-mounted installations more compact and also to reduce the need for flushing water, the EP 1 416 098 A1 a Absaugsiphon ago, which has a flow channel with a circular cross section for hydraulic optimization and also consists of two shell-shaped halves, so that it is relatively inexpensive to produce. The purge volume required with this siphon is in the range of 0.8 to 1.5 liters, which is still a relatively high value.

The document DE 244 76 95 corresponds to the preamble of claim 1, and is considered the closest prior art of Technick.

The object of the present invention is therefore to provide a suction siphon that manages with less than 0.8 liters flushing volume, in particular at most 0.5 liters flushing volume and in which nevertheless a sufficient suction effect is provided. In particular, the Absaugsiphon invention should be designed compact for flush-mounted installations and inexpensive to produce.

This object is achieved with a suction siphon according to claim 1. Advantageous developments are specified in the dependent subclaims.

According to a first aspect of the present invention, the inventors have recognized that the required flushing amount can be reduced by a substantially laminar flow is achieved by generously dimensioning the radius of the winding section serving as an odor trap, the less rinse water to achieve the suction effect required. In this regard, it is defined that the turn portion extends substantially around a turn point, the turn portion having a flow passage outside and a flow passage inside with respect to the turn point. The distance of the flow channel inside the Windungsabschnitts to Windungspunkt should then according to the invention at least 10% of the distance between the flow channel outside and flow channel inside in the winding section. Better performance in terms of flushing water savings will be achieved if this ratio is at least 15% and especially at least 25%. Advantageously, larger ratios could be used, but this would then be at the expense of the compactness of the Absaugsiphons, so that such Absaugsiphons could be used only poorly in flush-mounted installations due to limited in some types of urine installation space.

In contrast to this teaching according to the invention, the Absaugsiphon the EP 1 416 098 B1 a serving as an odor trap Windungsabschnitt, wherein the Windungspunkt runs directly within the flow channel inside, so that the ratio is 0%. This sudden reversal of the flow by 180 ° creates a highly turbulent flow, which requires the relatively high flushing water requirement.

The siphoning siphon of DE 2 447 695 A1 has a serving as an odor trap Windungsabschnitt where the winding point does not extend within the flow channel inside, but here is a ratio in relation to the distance between the outer side of the flow channel and the inner side of the flow channel of at most 5%, which is not yet sufficient to such a laminar flow to achieve, which leads to a significant saving of rinse water.

The Absaugsiphon invention for a Abflussinslallation, in particular a toilet urinal or the like., Comprises an inlet and an outlet port and a preferably arranged in a housing flow channel for liquid to be derived, the flow channel inlet to the inlet port and the flow channel exit are connected to the outlet port the flow channel is at least partially wound around the inlet connection and the winding of the flow channel is at least partially formed as a sine corner-shaped winding which is formed in a plane, wherein at least one winding section of the flow channel as an odor trap is used, wherein the winding portion extends substantially around a Windungspunkt, and wherein the Windungsabschnitt with respect to the Windungspunkt a flow channel outside and a flow channel inside, wherein the inlet port and / or outlet port are preferably formed as a nozzle, and is characterized in that the distance the flow channel inside the Windungsabschnitts to Windungspunkt is at least 10% of the distance between the flow channel outside and flow channel inside in the winding section, preferably at least 15%, in particular at least 25%.

In a preferred embodiment, provision is made for the flow duct to have a first rectilinear flow duct section in relation to the flow direction upstream of the turn section formed as an odor trap, which has a different gradient from the vertical with respect to the installation position of the suction siphon and / or that follows the as an odor trap formed Windungsabschnitt in the flow direction another winding section and then a second rectilinear flow channel section, which has a different from the vertical difference in relation to the mounting position of the Absaugsiphons. The flow channel inlet and the flow channel outlet advantageously run parallel to one another. This allows on the one hand to achieve a very compact size of Absaugsiphons and on the other hand, the flow conditions are improved, because the straight sections are not free fall sections, so that not as many turbulence arise as when water in a vertical line section falls freely without affecting the line wall. Therefore, it is expedient if even all rectilinear flow channel sections with respect to the installation position of Absaugsiphons from the vertical have different slopes.

Alternatively or additionally, it may be provided that the flow channel has at least two rectilinear portions which are not parallel and not perpendicular to each other. This also makes the Absaugsiphon very compact, because the inclined to each other extending sections take up less space.

The compactness can be further increased if the flow channel has at least one flattening on at least one lateral boundary of the suction siphon with respect to the tubular course of the flow channel. This lateral boundary may be provided on any side of the suction siphon, but preferably on the sides, which extend vertically with respect to the installation position tangential to the helical course. If an inclination of the winding portion of the Absaugsiphons is provided, then flattening can be provided on both sides, so that in contrast to a unilateral flattening results in a lower fluidic effect, since the cross-section must be flattened about half as strong to the required dimensions of, for example, currently to comply with the usual 100 mm.

Advantageously, it can be provided that the plane of the spiral-shaped turn of the flow channel is arranged in an area + 45 ° to -45 ° inclined to the vertical, preferably in a range + 20 ° to -20 ° inclined to the vertical, in particular vertically aligned.

Furthermore, it can be expediently provided that the flow channel is at least partially tubular and advantageously at least partially, preferably completely has a hexagonal, octagonal or decagonal cross section, on which in particular a capacitive sensor is arranged. On the one hand, this design is favorable in terms of flow, but on the other hand makes it possible to easily integrate sensors for actuation. While in round pipe sections either the sensor would have to be bent or formed on the pipe material thickening is to attach a planar sensor, this is no longer necessary. As a result, the production is cheaper and the sensor performance is better, since by such material thickening in capacitive sensors, one plate is a sensor plate and the other plate is formed by the flowing behind the pipe water, the detection accuracy of the sensor is reduced.

In terms of flow technology, it is particularly favorable if the flow channel is formed at least in the region of the turn, with the exception of possibly provided flattenings having a constant cross section.

In an alternative embodiment, for which according to a second aspect of the invention, independent protection is claimed, it is provided that the flow channel has a portion which extends at an angle, in particular a right angle from the plane of the winding of the tortuous portion of the flow channel extends with a smaller cross section over a first length into the outlet port, which has a larger cross section. It is expedient if this section is the flow channel exit, because the suction siphon can then be kept particularly compact, but it can also be provided that this section is arranged between the flow channel exit and the tortuous area. It is preferably provided that the plane the winding of the tortuous region extends vertically and the flow channel exit is arranged at a right angle thereto.

The outlet connection is therefore formed with a larger cross section, because it is the connection to standard sanitary pipes. By contrast, the flow channel has a smaller cross section in order to reduce the flushing water requirement.

As an alternative or in addition to this alternative embodiment, for which independent protection is likewise claimed according to the second aspect of the invention, it can be provided that the outlet connection preferably encompasses the flow channel at a distance along a second length, thereby forming a free space around the flow channel communicates with the outlet port. Here, too, it is preferably provided that the plane of the winding of the tortuous region extends vertically and the flow channel exit is arranged at a right angle thereto.

Due to the angled arrangement of the section relative to the plane of the winding area, ie the emergence of this section relative to the winding, the flow is also influenced very favorably. Now there is no sudden cross-sectional increase in the transition between turn and outlet connection and in connection with the kink between turn and outlet connection, no whirlpools are created. Rather, the flow is kept stable longer, so that by earlier access of the cross section with rinsing water, the suction effect occurs sooner and so less rinse water is consumed.

By the measure of the space through which forms an annular gap, it is achieved that bioslice that forms easily in such Absaugsiphons and sanitary pipes does not lead to clogging of the flow channel. As a result of the higher flow velocity at the flow channel outlet, this is largely kept free of biosludge and possibly bioclay deposited in the outlet connection can not enter the flow channel but enters the annulus.

It may then preferably be provided that the first length is at least 10 mm, preferably at least 20 mm, in particular at least 30 mm. Then whirlpools are particularly well prevented. It is also advantageous if the first length is equal to the second length, if both alternatives are realized at the same time, because then a very large annular space is available. Furthermore, it is advantageous if the section extends perpendicular to the helically wound region of the flow channel. Through all these Measures can influence the flow further advantageous, which additionally reduces the need for rinsing water.

In a further particularly preferred embodiment, it is provided that, in the transition between flow channel and outlet connection, the cross section of the flow channel is at least 10%, preferably at least 20%, in particular at least 30% smaller than the cross section of the outlet connection.

Alternatively or additionally, it is advantageous if the cross section of the flow channel in the transition between the flow channel and the outlet connection essentially corresponds to the cross section of the tortuous region of the flow channel.

Fig. 1

den erfindungsgemäßen Absaugsiphon in einer perspektivischen Draufsicht,

Fig. 2

den erfindungsgemäßen Absaugsiphon gemäß Fig. 1 in einer Draufsicht von vorn und

Fig. 3

den erfindungsgemäßen Absaugsiphon gemäß Fig. 1 in einer seitlichen Schnittdarstellung.

The characteristics and features of the present invention and further advantages will now be apparent from the description of a preferred embodiment in conjunction with the figures. Showing:

Fig. 1

the siphoning siphon according to the invention in a perspective plan view,

Fig. 2

the Absaugsiphon according to the invention according to Fig. 1 in a plan view from the front and

Fig. 3

the Absaugsiphon according to the invention according to Fig. 1 in a lateral sectional view.

In the Fig. 1 to 3 is Absaugsiphon 1 of the invention, which is useful for example for a toilet urinal, shown purely schematically in different views. Fig. 1 shows a perspective top view, Fig. 2 a top view from the front and Fig. 3 a side sectional view. It can be seen that the suction siphon 1 has an inlet connection 2 with a lamellae receptacle 2 a for a urinal (not shown) and an outlet connection 3 as well as a flow channel 4. In this case, the Absaugsiphon 1 a housing 5, which is formed from two shell-shaped elements 6, 7, which consist of an injection-molded plastic and, for example, welded or glued together.

The flow channel 4 has a first turn section 8 which serves as an odor trap 9 and the flow channel 4 winds helically around the entry connection, wherein a second turn section 10 and a third turn section 11 are provided next to the first turn section 8 and additionally in front of the first turn section 8 a first rectilinear flow channel section 12, between the first coil section 8 and the second coil section 10, a second rectilinear extending flow channel section 13 and between the second Windungsabschnitt 10 and the third Windungsabschnitt 11, a third rectilinear flow channel section 14. It can be seen that the first straight flow channel section 12 and the third straight flow channel section 14 parallel to each other. The second rectilinear flow channel section 13 extends inclined, ie, neither parallel nor vertical.

The flow channel 4, as best of Fig. 3 to recognize an octagonal cross section. As a result, a laminar flow is favored, wherein alternatively hexagonal or decagonal cross sections can be provided, and additionally a capacitive sensor can be attached to the flow channel, which is provided for example as a simple metal plate on the rear side of the housing 5 and for the automatic detection of a Use event and the subsequent triggering of a purge is used. In connection with relatively small wall thicknesses of the flow channel 4, as required for the functioning of such a capacitive sensor, the hexagonal, octagonal or decagonal cross-section offers better stability compared to approximately circular cross-sections, the sensor is easier to attach to those in this Cross sections present straight wall sections 15 and has a better performance.

In the first winding section 8 of the flow channel 4, which forms the odor trap 9, there is a uniform bending radius, which refers to the winding point 16. Closest to the winding point 16, the first winding section has a flow channel inside 17 and opposite a flow channel outside 18. The distance between Windungspunkt 16 and flow channel inner side 17 (which is assumed to measure of the flow on the inner surface of the flow channel inner side 17) is relative to the Clear width between flow channel inside 17 and flow channel outside 18 about 27%, Thus, turns in the first turn section on actuation of the flush a very laminar flow, whereby only a small amount of rinse water is needed.

Furthermore, it is provided that with respect to the installation position of Absaugsiphons 1, by the in Fig. 2 drawn horizontal A and vertical V is defined, none of the rectilinear flow channel sections 12, 13, 14 has a vertical slope, but a slope inclined to the vertical. This ensures that the laminar flow during the flushing process is obtained essentially over the entire flow channel 4 and also dead water areas, ie areas without current, are as small as possible.

In addition to the helically wound around the inlet port 2 around area 19 of the flow channel 4, the flow channel 4 also has a perpendicular thereto extending flow channel region 20, which forms the flow channel exit 20. This second flow channel region 20 extends over a length L within the outlet connection 3 and has a smaller cross section with respect to the cross section of the outlet connection 3. As a result, there is no sudden cross-sectional increase in the flow direction S and there are no strudel in the bend, as for example in the EP 1 416 098 B1 and whereby the flow can be torn off, but the flow is kept stable longer, so that by earlier access of the cross section with rinse water in the second flow channel region 20 of the suction effect occurs earlier and thus less rinse water is consumed. The stabilization in the flow is further assisted by the fact that the outlet connection 3 surrounds the second flow channel region 20 at a distance, so that a free space 21 is formed between the second flow channel region 20 and the outlet connection 3, which communicates with the outlet connection 3. This effectively prevents the entry of bioslurry into the flow channel (4, 20). In this embodiment, therefore, the first length L is equal to the second length.

The length L of the second flow channel region 20 is approximately 170% of the difference between the cross sections of the outlet port 3 and the second flow channel region 20 and is greater than 30 mm. The cross section of the second flow channel region 20 is approximately 35% smaller than the cross section of the outlet port 3.

As a result, despite the large bending radii supporting the laminar flow, a very compact design of the housing 5 of the suction siphon can be obtained in the turn sections 8, 10, 11. This is further supported by the fact that the otherwise formed with a constant cross-section flow channel 4 has with respect to the installation position of the Absaugsiphons 1 at both lateral boundaries flattening 22, 23, whereby the dimension of, for example, 100 mm is maintained without the flow through the associated with the flattening 22, 23 minor cross-sectional constrictions of the flow channel 4 in the region of these flattenings 22, 23 adversely affected. These flattenings 22, 23 are thus provided on the lateral boundary of the Absaugsiphons 1, which extend in relation to the mounting position tangentially to the helical course 19 vertically.

The investigation of the Absaugsiphons 1 according to the invention in terms of its performance gave the following results: During the purging process, the water flow within the flow channel 4 of Absaugsiphons is very laminar into the outlet port 3 and there are almost no dead water areas. For a water flow of 0.4 l / s, the flow channel 4 is completely filled after 1.2 s, resulting in a flushing water requirement of about 0.55 l. In addition, it was found that the suction effect in the case of water flows starts at approx. 0.2 l / s.

With a rinsing process of approx. 10 s, conventional siphoning siphons consumed approx. 2 l and also optimized siphoning siphons EP 1 416 098 A1 consume between 0.8 l and 1.5 l. The Spüiwasscrverbrauch the Absaugsiphons 1 invention log, however, at about 0.5 l for a water flow of 0.4 l / s. Thus, the Spulwasserbedarf can be significantly reduced again with the Absaugsiphon 1 according to the invention.

From the foregoing, it has become clear that the present invention provides a siphoning siphon 1, which requires less than 0.8 liters of flushing, in particular at most 0.5 liters of flushing and still provides a sufficient suction effect is provided. In particular, the Absaugsiphon invention is compact and thus used for all types of urine in flush-mounted installations and also inexpensive to produce.

Claims (15)

1. A draining siphon (1) for an under stucco drain installation, comprising: an inlet connection (2) and an outlet connection (3) and a flow channel (4) for a liquid to be drained, wherein an inlet of the flow channel is connected with the inlet connection (2) and an outlet (20) of the flow channel is connected with the outlet connection (3), wherein the flow channel (4) is configured wound about the inlet channel (2) at least in portions and a winding of the flow channel (4) is configured as a helical winding (19) at least in portions, wherein the helical winding (19) of the flow channel (4) is configured in a plane, wherein at least one winding section (8) of the flow channel (4) functions as an odor closure (9), wherein the winding section (8) substantially extends about a winding point (16), and wherein the winding section (8) includes a flow channel outside (18) and a flow channel inside (17) with reference to the winding point (16), characterized in that a distance of the flow channel inside (17) of the winding section (8) from the winding point (16) is at least 10% of the distance between the flow channel outside (18) and the flow channel inside (17) in the winding section (8), advantageously at least 15%, in particular at least 25%.
2. The draining siphon (1) according to claim 1, characterized in that the flow channel (4) has a first straight flow channel section (12) with reference to a flow direction (S) configured upstream from the winding section (8) configured as the odor closure (9), wherein the first straight flow channel section (12) has a slope that differs from vertical with respect to an installation orientation of the drain siphon (1) and/or wherein another winding section (10) is arranged downstream from the winding section (8) configured as the odor closure (9) in the flow direction (S) and wherein a second straight flow channel section (14) is arranged adjoining the first straight flow channel section (12) wherein the second straight flow channel section (14) has a slope that differs from vertical with respect to the installation orientation of the draining siphon (1).
3. The draining siphon (1) according to claim 2, characterized in that all straight flow channel sections (12, 13, 14) have slopes that differ from vertical with respect to an installation orientation of the drainage siphon.
4. The draining siphon (1) according to one of the preceding claims, characterized in that the flow channel inlet (2) and the flow channel outlet (20) are oriented parallel to one another.
5. The draining siphon (1) according to one of the preceding claims, characterized in that the flow channel (4) has at least two straight sections (12, 13, 14) which do not extend parallel to each other and do not extend perpendicular to each other.
6. The draining siphon (1) according to one of the preceding claims, characterized in that the flow channel (4) includes at least one flat portion (22, 23) at least at one lateral boundary of the draining siphon (1) with respect to the tube path of the flow channel (4).
7. The draining siphon (1) according to one of the preceding claims, characterized in that the plane of the helical winding (19) of the flow channel (4) is arranged in a portion inclined by + 45° up to - 45° relative to vertical, advantageously in a portion inclined between + 20° and - 20° relative to vertical, in particular oriented vertically.
8. The draining siphon (1) according to one of the preceding claims, characterized in that the flow channel (4) is configured tubular at least in portions and advantageously has a hexagonal (15), octagonal or decagonal cross section at least in portions advantageously in its entirety.
9. The draining siphon (1) according to claim 8, characterized in that a capacitive sensor is arranged at the cross section.
10. The draining siphon (1) according to one of the preceding claims, characterized in that the flow channel (4) has a constant cross section at least in the portion of the winding besides the flat portion (22, 23) according to claim 5.
11. The draining siphon (1) according to one of the preceding claims, characterized in that the flow channel (4) has a section (20) which extends at an angle from the plane of the winding of the wound portion (19) of the flow channel (4), wherein the section (20) extends with a smaller cross section over a first length (L) into the outlet connection (3) which has a larger cross section and/or wherein the outlet connection (3) envelops the flow channel (4, 20) with an offset along a second length which is advantageously identical with the first length (L) so that a free space (21) is formed about the flow channel (4, 20), wherein the free space (21) communicates with the outlet connection (3).
12. The draining siphon (1) according to claim 11, characterized in that the first length (L) is at least 10 mm, advantageously at least 20 mm, in particular at least 30 mm.
13. The draining siphon (1) according to claim 11 or 12, characterized in that a plane of the winding of the helical portion (19) extends vertically and the flow channel outlet (20) is arranged at a right angle thereto.
14. The draining siphon (1) according to one of the claims 11 - 13, characterized in that the cross section of the flow channel (4, 20) in a transition between the flow channel (4, 20) and the drain connection (3) is at least 10%, advantageously at least 20%, particularly advantageously at least 30% smaller than the cross section of the outlet connection.
15. The draining siphon (1) according to one of the claims 11 - 14, characterized in that the cross section of the flow channel (4, 20) in the transition between the flow channel (4, 20) and the outlet connection (3) essentially corresponds to a cross section of the wound portion (19) of the flow channel (4, 20).

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