EP2525002B1 - Pipe branch section for downpipes - Google Patents

Description

TECHNICAL AREA

The present invention relates to a branch line for downpipes according to the preamble of claim 1.

STATE OF THE ART

From the prior art, such a branch line piece is known. For example, are from the CH 418 067 and the US 4,998,754 such line branch pieces become known.

The applicant also distributes a branch line under the name Geberit Sovent, which is a fitting which provides a cost-effective and sophisticated solution for the delivery of waste water to wastewater sewer lines in multi-storey buildings, such as high-rise buildings.

The use of the product Geberit Sovent and also of Leiturigs branch pieces according to the CH 418 067 has led to very good results. However, in the meantime, the requirements with regard to discharge capacity, drop height and also the size of such pipe sections have increased.

In particular, a negative pressure in the supply line during operation should be largely prevented. The negative pressure is created by the effluent flowing in the downpipe and can be so large, especially at large fall heights, that wastewater is sucked out of the existing in the supply line siphons. Consequently, the siphon no longer fulfills the function as a closure element between downpipe and the corresponding waste water drains, such as toilet drain etc.

The formation of the negative pressure can be reduced, for example, in which braking elements or guide elements are arranged which brake or redirect the wastewater flowing in the direction of the fall in the region of the supply line. However, this has a negative effect on the power or the volume flow of the branch line piece, which means that line branch pieces with larger pipe diameters must be used in order to achieve a comparable performance. This is again undesirable, since so greater installation space is required.

PRESENTATION OF THE INVENTION

Based on this prior art, the invention has for its object to provide a line branch piece, which overcomes the disadvantages of the prior art. In particular, a line branch piece is to be created whose power is increased while maintaining the same size and whose performance is kept constant at a reduced size.

Such a problem is solved by the branched line piece according to claim 1.

The curved deflection surface preferably has the shape of a channel which extends along the flow curve or flow line. The channel bundles the wastewater to the said beam and then leads this tangentially to the wall of the flow area.

Preferably, the deflection surface or the channel is concave.

The flow curve or flow line can be formed in the region of the deflection surface as a straight axis or as a curved line.

Preferably, a flow divider is arranged in the direction of fall before the deflection, wherein the flow divider, the waste water jacket can be torn off. The flow divider preferably directs the waste water directly to the deflection section.

Preferably, the deflection region is arranged in the direction of fall directly after the upper downcomer section, and / or the flow-through region is arranged immediately after the deflection region, and / or the lower downflow section is arranged immediately after the flow-through region.

The feed line section preferably has an opening region in which the feed line opens into the line branch piece via the feed line section, wherein the mouth region is separated from the flow region by a dividing wall, so that the entry of waste water from the flow region into the mouth region is prevented.

Preferably, a bleed passage is arranged between the flow area and the feed line section, via which pressure differences between the flow area and the mouth area can be compensated.

Further advantageous embodiments are characterized in the subclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine Seitenansicht eines Leitungszweigstückes gemäss einer Ausführungsform der vorliegenden Erfindung;

Fig. 2

eine Ansicht von vorne des Leitungszweigstückes nach Figur 1;

Fig. 3

eine perspektivische Darstellung des Leitungszweigstückes nach Figur 1 im Durchflusszustand;

Fig. 4

eine Ansicht des Leitungszweigstückes nach Figur 1 von der Seite im Durchflusszustand;

Fig. 5

eine Detailansicht der Figur 4 von hinten;

Fig. 6

eine Ansicht des Leitungszweigstückes nach Figur 1 von oben im Durchflusszustand; und

Fig. 7

eine Schnittansicht entlang der Linie VII-VII der Figur 1 im Durchflusszustand.

Preferred embodiments of the invention are described below with reference to the drawing, which serve only for explanation and are not to be interpreted as limiting. In the drawing show:

Fig. 1

a side view of a line branch piece according to an embodiment of the present invention;

Fig. 2

a front view of the line branch piece after FIG. 1 ;

Fig. 3

a perspective view of the line branch piece after FIG. 1 in the flow state;

Fig. 4

a view of the line branch piece after FIG. 1 from the side in the flow state;

Fig. 5

a detailed view of the FIG. 4 from the back;

Fig. 6

a view of the line branch piece after FIG. 1 from above in the flow state; and

Fig. 7

a sectional view taken along the line VII-VII of FIG. 1 in the flow state.

DESCRIPTION OF PREFERRED EMBODIMENTS

The FIGS. 1 and 2 show a line branch piece 1 for use in wastewater sewer pipes in multi-storey buildings. The line branch piece 1 is used for the connection of a waste water supply line from a floor in the downpipe, which extends from floor to floor, usually over the entire building height. The supply line is therefore connected via the branch line piece 1 with the down pipe.

The line branch piece 1 comprises an upper downcomer section 2 with an inlet opening 3, a deflecting section 4 adjoining the upper downcomer section 2 and a lower downpipe section 5 adjoining the deflecting section 4 with an outlet opening 6, and at least one inlet section 7 via which additional wastewater is introduced into the downpipe becomes. The upper downcomer section 2, the deflecting section 4 and the lower downcomer section 5 are surrounded by a wall 11, 20. The upper downcomer portion 2 of the line branch piece 1 is connected to an upper downpipe, not shown here, and the lower downcomer portion 5 is connected to a lower downpipe, also not shown here. The supply line section 7 communicates with the drains of, for example, a dwelling in a multi-storey building in connection and is sealed there via a siphon to the line system out, as explained above. The connection between the pipe section 1 and the downpipe or the supply line is preferably via a material connection, such as a welded connection.

In the FIG. 3 a schematic representation of the wastewater is shown. The drop lines are arranged so that their central axis lies in the vertical V. Consequently, the waste water flows in the vertical V along a fall direction F and forms on the wall 20 of the downpipe and partly also in the downcomer sections 2, 3 a circulating cylindrical wastewater film or wastewater jacket W. In this context, it should be noted that wastewater, which is in the Essentials Water and solids composed, with respect to flow effects is not significantly different from water.

In the central region of the downpipe there is an air column L, which extends in the downpipe between two branch line pieces 1. Due to the flow of the waste water jacket W, the air column L is placed in pulsating motion, with too high a pulsation has a negative effect on the efficiency of the line branch piece 1.

The diameter of the down pipe is to be dimensioned so that at the maximum volume flow, the wastewater as waste water jacket W flows away, whereby the air column L is present.

The wastewater is introduced from the upper downcomer via the inlet opening 3 into the branch pipe 1 along the fall direction F, which corresponds essentially to the vertical V,. The wastewater passes through the upper downcomer section 2 and is deflected by the deflecting section 4 according to the description below. In the region of the deflection section 4 additional wastewater is introduced into the downpipe via the supply line section 7. After passing through the deflection section 4, the deflected wastewater mixes with the additional wastewater and leaves the line branch piece 1 via the lower downflow section 5 or the outlet opening 6 to the lower downflow line. Due to the flow characteristics, a waste water jacket W and an air column L are then created in the lower downpipe as soon as the wastewater has traveled a certain distance.

The deflection section 4 here comprises a deflection region 8 which deflects the wastewater W from the fall direction F, and a flow region 12 arranged downstream of the deflection region 8 in the direction of fall F. The flow region 12 is preferably immediately after the deflection region 8, ie directly to the deflection region 8 Subsequently, arranged, while the deflection region 8 directly or directly adjoins the upper downcomer section 2. The flow area 12 then opens directly into the lower downflow section 5, thus the lower downcomer section 12 arranged immediately after the flow area 12.

The deflection region 8 comprises a deflection surface 10 running along a flow curve or flow line M and curved around the flow curve or flow line M for bundling the wastewater as a jet S. The curvature of the deflection surface 10 is selected such that the waste water jacket W passes through the deflection surface 10 is essentially bundled as a beam S and leaves as the beam S, the deflection surface 10 again. In the direction of the flow curve or the flow line M, the flow curve or the flow line M can also be referred to as the center axis of the curvature of the deflection surface 10.

In the FIGS. 4 and 6 it is shown that the deflection surface 10 seen to the fall direction F with respect to the fall direction F is at a first angle β. It can also be said that the deflection surface 10 is in a plane E, which extends through the falling direction F, with the angle β to the direction of fall F. The level E is in the FIG. 4 parallel to the drawing sheet surface. The plane E extends substantially through the center axis of the upper downcomer section 2 and the lower downcomer section 5. With respect to the plane E, the deflection surface 10 extends in the direction of the fall direction F at a second angle α. This can be done in the FIG. 6 be recognized.

The first angle β is preferably selected in the range of 90 ° to 175 °, in particular in the range of 125 ° to 155 °, particularly preferably 140 °. The second angle α is preferably selected in the range of 0 ° to 45 °, in particular in the range of 10 ° to 30 °, particularly preferably 19 °.

The curved deflection surface 10 is thus directed with its central axis M substantially tangentially to the wall 11 of the flow area 12. Thus, the sewage steel S impinges substantially tangentially on the wall 11 of the flow area 12. Due to the tangential impingement of the sewage jet S is guided along a flow curve through the flow area 12 and rotated about a relative to the wall 11 centrally through the flow area 12 extending curve 23 in rotation. The waste water jet S flows along the wall 11 through the flow area 12. Thus, it can be said that the waste water flows along the Wall 11 helically in the direction of F flows.

The curve 23 is laid essentially through all centers of the pipe sections of the branch line piece. The curve can be in the FIGS. 4 and 5 be well recognized. With regard to the curve 23, it can also be said that in the region of the upper downcomer section 2, in parts of the flow-through region 12 and the lower downpipe section 5, it is part of the plane E or lies in the plane E or spans the plane E. The flow direction of the waste water is deflected by the deflection surface 8 laterally to the plane E and the curve 23, so that the wastewater is passed tangentially to the wall 11 and thus the rotation about the curve 23 can be achieved. This deflection 19 is in the FIG. 5 shown. Consequently, the waste water rotates after the deflection about the curve 23. The maximum deflection 19 is preferably in the region of the end 21 of the deflection region eighth

The flow line or the flow curve is preferably a curve that is continuous in the mathematical sense, so that the wastewater undergoes, as far as possible, a turbulence-free deflection.

In other words, it can be said that the deflection region 8 is designed so that the wastewater is deflectable with respect to the fall direction F. The deflection is such that the wastewater as a sewage jet tangentially to the wall 11 of the flow area 12 occurs. Due to the tangential impingement, the waste water jet is set in rotation about the line 23 extending centrally through the flow area 12, and can be guided as a rotating flow along the wall 11 through the flow area 12.

The described rotation of the wastewater has the advantage that a large deceleration of the wastewater and thus a reduction in performance can be avoided. The rotation of the waste water along the wall 11 thus has the advantage that with a constant diameter of the down pipe, a larger volume flow can be achieved or the diameter can be reduced at a constant volume flow. The rotation also makes it possible for an air column L to extend from the upper downcomer section 2 as far as the lower downcomer section 5. Thus, there is no interruption of the air column by wastewater and performance is not negatively affected. Due to the continuous air column there is no negative pressure in the system and thus it can not lead to an emptying of the siphons in the supply lines. In addition, no congestion zones with other negative effects, such as the pulsation of the air column, arise.

Based on FIGS. 3 to 7 Now, the implementation of the waste water is explained in more detail by the line branch piece 1. After entering through the upper downcomer section 2, the wastewater flows through the deflecting section 4 and then exits the line branch piece 1 through the lower downcomer section 5. In the deflecting section 4, which is located directly between the upper downcomer section 2 and the lower downcomer section 5, the sewage passes through the deflecting region 8 with the deflecting surface 10 deflected such that the wastewater impinges as a jet S tangentially to the curved wall 11 of the flow area 12. Subsequently, the water as a helical flow passes through the flow area 12 and then flows into the lower downflow section 5.

In the FIG. 4 can be well recognized that the wastewater is guided after deflection by the deflection region 8 on the wall 11 opposite the feed line section 7 in the fall direction F. The same is true in the FIG. 6 shown. The guidance of the wastewater with respect to the supply line section 7 has the advantage that the wastewater can be continuously stirred on a wall, which does not cause the rotation to break off.

In the FIG. 7 is a sectional view taken along the section line VII-VII in the FIG. 1 shown. Consequently, it is directed to the lower portion of the deflection section 4 to the lower downcomer section 5 out.

The transition between the flow area 12 and the lower downcomer section 5 is designed so that the wastewater flows tangentially into the lower downcomer section 5. Consequently, the lower portion 15 is immediately prior to the mouth in the lower downcomer section 5 tangential to the wall 20 of the lower downcomer section. In the further course of a sewer line which is in communication with the lower downflow section 5, the rotation due to flow effects then again becomes a wall flow W. Die tangential flow of the lower downcomer section has the advantage that no storage zone for the wastewater in the lower downcomer section can arise. Experiments have shown that in the case of the formation of a storage zone by the outflowing water, a strong negative pressure in the supply line may arise.

Preferably, the curved deflection surface 10 has the shape of a channel 24, wherein the channel extends substantially along the central axis M.

The deflection region 8 has, in particular, the shape of a pipe bend 9, wherein the channel 24 or the deflection surface 10 is then provided by the pipe bend 9. The pipe bend 9 is bent substantially at the angle β and deflected with respect to the plane E by the angle α to the direction of fall F. In the case of the pipe bend, the central axis M is formed as a curved axis, the curvature substantially corresponding to the central radius of the pipe bend. Thus, it can be said with respect to the center axis M of the deflection surface 10 that it may be formed as a straight axis or formed as a curved axis. In the curved variant, the flow losses are slightly lower.

The deflection surface 10 and the channel 24 are preferably concave with respect to the interior of the line branch piece, so that the water steel can be provided in a simple manner.

In the present embodiment, a flow divider 18 is seen in the direction of fall F is arranged in front of the deflection section 4, wherein with the flow divider 18 of the waste water jacket W can be torn off. After tearing open the waste water jacket W, the wastewater then flows to the deflection region 8, where the water jet S is formed by the deflection surface 10. The flow divider 18 is preferably arranged such that the total amount of waste water is diverted to the deflection region 8. Next, the flow divider 18 also has the advantage that the disruption of the film flow, the pulsation of the air column L and thus the resulting pressure differences in the branch line piece can be reduced

The flow area 12 is, as already mentioned above, directly in connection with lower downcomer section 5, in which then the wastewater flows from the flow area.

Next, the flow area 12 with a portion 25 of the wall 11 at an angle γ is angled or inclined to the direction of fall F and the vertical V. This is in the FIG. 4 shown. The wall 11 is seen from the vertical V inclined to the first deflection 8 towards. The angle γ is in the range of 2 ° to 12 ° with respect to the vertical V.

The at least one supply line section 7 is arranged so that it opens into the line branch piece 1 essentially at the level of the deflection region 8. In the present embodiment, a total of six supply line sections 7 are available. In this case, three supply line sections 7 are arranged with a large diameter and three further supply line sections 7 with a smaller diameter each T-shaped, wherein the supply line sections 7 are arranged at an angle of 90 ° to each other. The group lead portions 7 with the large diameter are preferably arranged in the direction of fall F over the group inlet portions 7 arranged with the small diameter.

The supply line section 7 leads waste water to the branch line piece, wherein the waste water flows into the line branch piece 1 via a mouth region 13. The mouth region 13 is separated from the flow region 12 by a partition wall 14, so that the entry of flowing waste water from the flow region 12 into the mouth region 13 is prevented. Between the deflection region 8 and the partition wall 14, it is also possible to arrange a vent passage 16 in the partition wall 14, wherein an air pressure equalization between the flow area 12 and the mouth region 13 can take place, which is shown by the arrow 17. With this pressure compensation a flow-induced pressure pulsation in the system is prevented or greatly reduced, so that the risk of the formation of the negative pressure in the supply lines 7 is substantially reduced.

In the FIG. 5 the preferred arrangement of the vent passage 16 is shown. Preferably, the vent passage 16 with respect to the direction of fall F side of the Deflection surface 10 is arranged, which has the advantage that the flowing wastewater can not flow through the vent passage 16 in the mouth region 13.

The adjustment of the pressure difference has the advantage that large differences in pressure at the various points by permanent compensation can not even arise.

The line branch piece is preferably made of a plastic by means of a plastic bubble process and is integrally formed.

Preferred diameters of the line branch piece are 110 mm and 160 mm. Experiments have shown that with the deflection according to the present invention with a smaller diameter, the same performance can be achieved.

In summary, it can be said that with the helical passage of the waste water through the branch pipe branch, the flow losses can be reduced, whereby the performance can be improved. LIST OF REFERENCE NUMBERS 1 Leg piece α Angle deflection surface 2 upper downpipe section β Angle deflection surface 3 inlet opening γ angle 4 deflecting 5 lower downpipe section 6 outlet opening 7 lead portion 8th deflection 9 Elbows 10 deflection 11 wall 12 Flow range 13 mouth area 14 partition wall 15 lower section 16 Vent passage 17 pressure equalization 18 flow divider 19 deflection 20 wall 21 End of the deflection area 22 supply 23 Line, central axis 24 channel 25 inclined section F falling direction L air column S beam V vertical W water jacket

Claims (8)

1. Pipe branch piece (1) for a downpipe in which sewage in the form of a sewage layer (W) can be guided on a wall (11, 20) in a fall direction (F), comprising an upper downpipe section (2) having an inlet opening (3), a diverting section (4) adjoined to the upper downpipe section (2), and a lower downpipe section (5) adjoined to the diverting section (4) and having an outlet opening (6), as well as at least one supply pipe section (7), which in the region of the diverting section (4) opens out into the pipe branch piece (1), wherein the diverting section (4) comprises at least one diverting region (8) and a flow region (12) having a wall (11),
   wherein the fall direction (F) is defined centrally through the upper downpipe section (2),
   wherein a curve (23) extends through centre points of the pipe sections of the pipe branch piece (1), wherein the curve, in the region of the upper downpipe section (2), in parts of the flow region (12) and of the lower downpipe section (5), defines a plane (E) and lies in the plane (E), and wherein the curve (23), in the region of the diverting region (8), is deflected laterally from the plane (E) with respect to the fall direction (F),
   wherein the diverting region (8) comprises a diverting surface (10), running along a flow curve and configured partially curved around the flow curve, for the bundling of the sewage as a jet (S), wherein the diverting region (8) has the form of a pipe bend (9), wherein the diverting surface (10) is provided by the pipe bend (9), wherein the pipe bend (9) is essentially bent around a first angle (β) with respect to the fall direction (F) and deflected to a second angle (α) with respect to the plane (E) extending through the fall direction (F),
   wherein, as a result of the two angles (β, α), the curved diverting surface (10) is directed substantially tangentially to the wall (11) of the flow region (12), and
   wherein the wall (11) comprises an inclined section (25),
   wherein the wall (11), immediately after the inclined section (25), is at least in sections configured curved, in particular about an axis standing perpendicular to the fall direction (F),
   characterized in that the inclined section (25) of the wall (11) in the flow region (12) stands at an angle (γ) within the range from 2 to 12° to the fall direction (F), and the wall (11), viewed in the fall direction (F), is inclined towards the diverting region (8).
2. Pipe branch piece according one of the preceding claims, characterized in that the diverting surface (10) is concavely configured.
3. Pipe branch piece according to one of the preceding claims, characterized in that the diverting region (8), viewed in the fall direction (F), is arranged immediately after the upper downpipe section (2), and/or in that the flow region (12) is arranged immediately after the diverting region (8), and/or in that the lower downpipe section (5) is arranged immediately after the flow region (12).
4. Pipe branch piece according to one of the preceding claims, characterized in that a flow divider (18), viewed in the fall direction (F), is arranged in front of the diverting section (4), wherein the sewage layer (W) can be broken with the flow divider (18).
5. Pipe branch piece according to one of the preceding claims, characterized in that the supply pipe section (7) comprises a mouth region (13) in which a supply pipe, via the supply pipe section (7), opens out into the pipe branch piece (1), wherein the mouth region (13) is separated from the flow region (12) by a partition (14), so that sewage is prevented from passing out of the flow region (12) into the mouth region (13).
6. Pipe branch piece according to Claim 5, characterized in that between the flow region (12) and the supply pipe section (7) is arranged a vent duct (16), via which pressure differences between flow region (12) and mouth region (13) can be equalized.
7. Pipe branch piece according to Claim 6, characterized in that the duct (16) and the diverting region (8), viewed in the fall direction (F), are arranged laterally offset from one another, so that sewage can be prevented from passing through the duct (16).
8. Pipe branch piece according to one of the preceding claims, characterized in that the first angle (β) is within the range from 90° to 175°, in particular within the range from 125° to 155°, particularly preferably 140°, and/or in that the second angle (α) is within the range from 0° to 45°, in particular within the range from 10° to 30°, particularly preferably 19°.

Images