AU2022204418A1 - Drainage shaft, in particular for a drainage pipe system of a building - Google Patents

Abstract

The present invention relates to a drainage shaft (1), in particular for a drainage pipe sys tem of a building, comprising a shaft body (10) with a shaft bottom (11) arranged at the bot 5 tom in an installation position and a shaft wall (12), thereby defining a shaft volume (14); an inlet opening (20) arranged on the side opposite of the shaft bottom (11) and opening into the shaft volume (14); an outlet opening (28) formed in the shaft wall (12) between the shaft bottom (11) and the inlet opening (20); and a deflecting element (25), which is arranged in the region of the outlet opening (28) between the shaft bottom (11) and the inlet opening 10 (20) and which projects into the shaft volume (14), wherein the deflecting element (25) pro jects diagonally downwards from the outlet opening (28) into the shaft volume (14) in the in stallation position. 15 - Fig. 2 - 1/2 Fig. 1 420 112 16 26' 26' 27' 27'' 24 22 1 102 27 28 26 30 231 310 Fig. 2 201 22 18 27' 24 14 26' 10 25 12 30 28 31

Description

1/2

Fig. 1

420

16 26' 26'

112 27' 27''

24 22 1

27 28

26 102

30 231

Fig. 2 201

22 18 27' 24

14 26' 310

10 25

12 30

28

Drainage shaft, in particular for a drainage pipe system of a building

FIELD OF THE INVENTION The present invention relates to a drainage shaft which is particularly suitable for house drainage pipe systems, the drainage shaft comprising a shaft body with a shaft bottom ar ranged at the bottom in an installation position and a shaft wall, thereby defining a shaft vol ume; an inlet opening arranged on the side opposite of the shaft bottom and opening into the shaft volume; an outlet opening formed in the shaft wall between the shaft bottom and the inlet opening; and a deflector element arranged between the shaft bottom and the inlet opening in the region of the outlet opening and projecting into the shaft volume.

BACKGROUND Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.

Such drainage shafts are known from the prior art. In particular, German patent appcation DE 10 2017 109 276 Al describes such a drainage shaft in which a deflecting element re ferred to as a separation device projects into the shaft volume. The separation device com prises a curved separation wall which extends vertically in an installed situation and is in serted into the shaft volume in a form-fitting manner, and a submerged bend with a verti cally downwardly directed inlet limb and a laterally aligned bend outlet which is flow-con nected to the outlet opening. A disadvantage of the drainage shaft described in DE 10 2017 109 276 Al is seen in that the separation device used in the drainage shaft significantly re duces the flow rates through the drainage shaft. The separation device is intended to retain filterable substances from the water flowing through the drainage shaft. Therefore, the drainage shaft according to DE 10 2017 109 276 Al is also suitable for discharging surface water with coarse impurities. With such drainage shafts, the retention of filterable sub stances can lead to a strong odor nuisance. Furthermore, this drainage shaft has a complex structure.

Against this background, the present invention is based on the task of providing a drainage shaft which at least partially overcomes the disadvantages of the prior art. In particular, the drainage shaft according to the invention is intended to be suitable for drainage pipe sys tems of bulidungs, to cause a reduced maintenance effort and to allow a high flow rate through the drainage shaft. Furthermore, the drainage shaft according to the invention is in tended to have a simple structure.

These and other tasks are solved according to the invention by a drainage shaft having the features described claim 1. Preferred embodiments of the present invention are described in the dependent claims.

SUMMARY It is an object of the present invention to overcome or ameliorate at least one of the disad vantages of the prior art, or to provide a useful alternative.

According to the present invention, it has been recognised that an increased flow rate through the drainage shaft can be achieved, if the deflector element of the drainage shaft projects diagonally downwards from the outlet opening into the shaft volume in the installed position. The increased flow through the drainage shaft created in this way means that sol ids, such as hair, soap and the like, cannot settle in the drainage shaft. The downward pro jection of the deflector element into the shaft volume from the outlet opening means that all parts of the deflector element in the drainage shaft are below the water surface. This pre vents solid waste from accumulating on the deflector element above the water surface and possibly causing an odor nuisance. This reduces the frequency with which maintenance of the drainage shaft, which includes, for example, the removal of solid waste, has to be car ried out.

Accordingly, the present invention provides of a drainage shaft particularly suitable for the drainage pipe system of a building, the drainage shaft comprising a shaft body with a shaft bottom arranged in the installation position at the bottom and a shaft wall, thereby defining a shaft volume; an inlet opening arranged on the side opposite of the shaft bottom and open ing into the shaft volume; an outlet opening formed in the shaft wall between the shaft bot tom and the inlet opening; and a deflecting element arranged in the region of the outlet opening between the shaft bottom and the inlet opening and projecting into the shaft vol ume, wherein in the installed position the deflecting element projects diagonally downwards from the outlet opening into the shaft volume.

With regard to the drainage shaft according to the presnt invention, it may be preferred if the deflector element projects diagonally downwards into the shaft volume at an angle in the range of 250 to 65°. An angle in such a range considerably reduces the holding of solids in the drainage shaft according to the present invention. Angles in the range of 300 to 60 and preferably angles of about 45 have proven to be particularly favourable. Such angles are particularly useful for reasons of flow dynamics. The specified angles preferably refer to the inclination towards the shaft wall.

It can also be useful if the deflector element is formed integrally with the shaft body. This re duces the occurrence of corners and edges inside the drainage shaft according to the pre sent invention, so that this also leads to reduced separation of solids in the shaft volume.

Furthermore, it can be convenient if the drainage shaft further comprises a drainage pipe that connects to the outlet opening. The drain pipe serves to drain off liquid from the drain age shaft. In particularly preferred embodiments, the drainage pipe is formed integrally with the shaft body. A one-piece design of the drainage pipe with the drainage shaft also contrib utes to a good flow and tightness of the drainage shaft according to the present invention.

Additionally or alternatively, it may be advantageous if the shaft bottom, which limits the shaft volume downwards, is rounded. A rounded shaft bottom further increases the flow rate through the drainage shaft according to the presnt invention and prevents solid materials from being deposited in the drainage shaft of the present invention. Preferably, the rounded shaft bottom opens into the outlet opening, in particular via a smooth transition.

It may also prove helpful if the drainage shaft further comprises at least one side inlet open ing formed in the shaft wall between the shaft bottom and the inlet opening. One or more side inlet openings offer the possibility of allowing draining liquid to flow into the drainage shaft of the presnt invention via further pipelines. In preferred embodiments of the drainage shaft according to the invention, the side inlet openings are designed to be closed and are opened as required and suitable pipelines are introduced into the side inlet openings then present, if necessary using a sealing means, in particular a sealing ring. Accordingly, it is particularly preferred if a side inlet pipe adjoins the at least one side inlet opening. In partic ular, a side inlet pipe can be connected to each of the side inlet openings.

It may also be helpful if the drainage shaft comprises a fastening element. Such a fastening element can serve to fasten the drainage shaft of the prenent invention, for example using fastening rods, to a room ceiling, which preferably comprises a concrete slab, which is lo cated under a drain, for example the drain of a shower tray, a floor-level shower, a bath room or a washroom.

The drainage shaft according to the invention is preferably made of a polymer material, in particular polypropylene (PP) or polyvinyl chloride (PVC). The drainage shaft of the presnt invention as well as individual parts thereof can also be manufactured line-by-line or layer by-layer using a line-building or layer-building manufacturing process (e.g. 3D printing), but preferably by means of injection moulding. Any seals that may be present, in particular seal ing rings, can be inserted into the drainage shaft of thepresnt invention after injection moulding or can be moulded directly onto the drainage shaft in a multi-component injection moulding process.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

FIGURES In the following, the present invention will be explained in detail with reference to the em bodiments shown in the figures.

Figure 1 shows a perspective view of a drainage shaft according to an embodiment of the present invention;

Figure 2 shows a cross-sectional view of the drainage shaft according to the present invention shown in Fig. 1; and

Figure 3 a schematic representation of an installation situation of the drainage shaft according to the present invention shown in Fig. 1.

DETAILED DESCRIPTION In Fig. 1, a drainage shaft 1 according to one embodiment of the present invention is shown in a perspective side view. Fig. 1 shows the external technical features of the drainage shaft 1 of the present invention, which in the embodiment shown is particularly suitable for a drainage pipe system of a building. The drainage shaft 1 according to the present invention comprises a shaft body 10 with a shaft bottom 11 (Fig. 2), which is arranged at the bottom of the drainage shaft 1 of the present invention in an installation situation, and a laterally ar ranged, preferably round shaft wall 12. The shaft bottom 10 and the shaft wall 12 define a shaft volume 14 of the drainage shaft 1 of the present invention, which in the representation according to Fig. 1 is open to one side through an inlet opening 20. The inlet opening 20 is located opposite to the shaft bottom 11. In the area of the inlet opening 20, there is a cir cumferential annular bead 16 in the shaft wall 12, into which a sealing ring 18, preferably made of an elastic material, is inserted.

In the shaft wall 12, the annular bead 16 is followed by a straight section 22, which in turn is followed by a taper 24 in the shaft wall 12. In the embodiment according to Fig. 1, three side inlet openings 26, 26', 26" are arranged in the shaft wall 12 below the taper 24. A corre sponding pipe section is attached to each of the side inlet openings 26, 26', 26", which in the embodiment of the drainage shaft 1 according to the invention shown in Fig. 1 is in each case slightly inclined towards the center of the shaft 1. In this embodiment of the present in vention, the three side inlet openings 26, 26', 26" are arranged at the same height in the shaft wall 12, the two side inlet openings 26 and 26'and the two side inlet openings 26'and 26" each being arranged in pairs offset by 900 along the shaft wall 12. A side inlet pipe 27, 27', 27" adjoins each of the side inlet openings 26, 26', 26". In the embodiment of the drain age shaft 1 according to the invention shown in Fig. 1, the side inlet openings 26, 26', 26" are closed and can be opened as required, for example by drilling or milling.

Between the shaft bottom 11 and the inlet opening 20, an outlet opening 28 is formed in the shaft wall 12 below the side inlet openings 26, 26', 26". A drainage pipe 30 is connected to this outlet opening 28. In the embodiment shown in Fig. 1, the drainage pipe 30 is formed integrally with the shaft wall 12. According to this embodiment of the drainage shaft 1 of the present invention, the drainage pipe 30 is inclined at an angle of about 45 to the shaft wall 12.

A fastening element 31 is connected to the drainage shaft 1 via the shaft bottom 11 of the drainage shaft 1 of the present invention. The fastening element 31 is used to fasten the drainage shaft 1 of the present invention to a ceiling 32, for example by means of fastening rods 33, 33' (cf. Fig. 3).

The embodiment of the drainage shaft 1 of the present invention shown in Fig. 1 is shown in Fig. 2 in a cross-sectional view. This shows the structure of the shaft volume 14, which is defined by the shaft bottom 11 at the bottom, the shaft wall 12 laterally and the inlet opening 20 at the top.

From the cross-sectional view of the drainage shaft 1 of the present invention as shown in Fig. 2, the interior of the drainage shaft 1 can be clearly seen. At the upper edge of the out let opening 28, a deflecting element 25 is integrally connected to the shaft wall 12. The de flecting element 25 projects diagonally downwards in the direction of the shaft bottom 11 into the shaft volume 14, preferably inclined at an angle of about 45 to the shaft wall 12. In the installation situation according to Fig. 2, the highest point of the deflecting element 25 is located below the lower edge of the side inlet openings 26, 26', 26" in the installation posi tion according to Fig. 1 and Fig. 2. This means that the entire deflecting element 25 in the drainage shaft 1 of the present invention is positioned below the water surface in the shaft volume 14. As a result, no solid waste can accumulate above the water surface on the de flecting element 25 and thus possibly cause an odour nuisance, which makes the drainage shaft 1 of the present invention particularly suitable for domestic drainage pipe systems.

Waste water that enters the drainage shaft 1 of the present invention through the inlet opening 20 or the side inlet openings 26, 26', 26" flows past the deflector element 25 through the outlet opening 28 directly into the drainage pipe 30 and exits from there from the drainage shaft 1 of the present invention. In this way, a high flow rate of liquid through the drainage shaft 1 of the present invention is made possible. This increased flow rate through the drainage shaft 1 of the present invention, in turn, conditions that solids, such as hair, soaps and the like, which may be present in the waste water flowing through the drainage shaft 1 of the present inven tion, cannot settle in the drainage shaft 1 of the present invention. This reduces the mainte nance effort required for the drainage shaft 1 according to the invention.

Furthermore, it can be seen in Fig. 2 that the shaft bottom 11 of the drainage shaft 1 ac cording to the invention is rounded. There are no corners and/or edges between the shaft wall 12 and the shaft bottom 11 on the one hand and between the shaft bottom 11 and the drain pipe 30 on the other hand. This further increases the flow rate through the drainage shaft 1 of the present invention and, thus, further reduces the deposition of solid materials in the drainage shaft 1 of the present invention.

Fig. 3 schematically shows an installation situation of the drainage shaft 1 of the present in vention shown in Fig. 1 and Fig. 2. Here, the drainage shaft 1 of the present invention is fas tened via the fastening element 31 using fastening rods 33, 33' below a drain 35, which, for example, drains off water from a shower tray or a shower flush with the floor, a bathroom or a washroom, on the underside of the room floor, which may also form the ceiling of a room below. From the drain 35, the water flows through the inlet opening 20 into the drainage shaft 1 according to the invention. In addition, further waste water can enter the drainage shaft 1 according to the invention via the side inlet pipes 27, 27', 27", whereby only the side inlet pipe 27' is shown in Fig. 3. The side inlet pipe 27' opens into a further inlet pipe via a transition piece. When waste water flows into the drainage shaft 1, the water level in the drainage shaft 1 rises so that the waste water can flow out of the drainage shaft 1 according to the invention through the outlet opening 28 via the drainage pipe 30. For this purpose, the drainage pipe 30 is connected via an angled transition piece 36 to a waste water pipe 37, which, if necessary, opens via a further transition piece into a downpipe 38, via which the waste water reaches the sewer system.

All of the features and advantages, including constructional details, spatial arrangements and process steps, which emerge from the claims, the description and the drawings, can be essential to the invention both individually and in a wide variety of combinations.

The present invention has been described in detail by way of example with reference to the embodiment of the drainage shaft according to the invention shown in the figures. It is un derstood that the present invention is not limited to this embodiment. The scope of the pre sent invention is apparent from the appended claims.

Claims (10)

Claims

1. Drainage shaft, in particular for a drainage pipe system of a building, comprising

(a) a shaft body with a shaft bottom arranged at the bottom in an installed position and a shaft wall, thereby defining a shaft volume;

(b) an inlet opening arranged on the side opposite of the shaft bottom and opening into the shaft volume;

(c) an outlet opening formed in the shaft wall between the shaft bottom and the inlet opening; and

(d) a deflecting element which is arranged between the shaft bottom and the inlet open ing in the region of the outlet opening and which projects into the shaft volume,

wherein:

in the installated position the deflecting element projects diagonally downwards from the outlet opening into the shaft volume.

2. Drainage shaft according to claim 1, wherein the deflecting element projects diagonally downwards into the shaft volume at an angle in the range from 25 to 65°, in particular from 30° to 600 and preferably from about 45°.

3. Drainage shaft according to claim 1 or claim 2, wherein the deflecting element is formed integrally with the shaft body.

4. Drainage shaft according to any one of claims 1 to 3, wherein the drainage shaft further comprises a drainage pipe adjoining to the outlet opening.

5. Drainage shaft according to claim 4, wherein the drainage pipe is formed integrally with the shaft body.

6. Drainage shaft according to one of the claims 1 to 5, wherein the shaft bottom which delimits the shaft volume at the bottom, is rounded.

7. Drainage shaft according to claim 6, wherein the rounded shaft bottom opens into the outlet opening.

8. Drainage shaft according to any one of claims 1 to 7, wherein the drainage shaft further comprises at least one side inlet opening formed between the shaft bottom and the inlet opening in the shaft wall.

9. Drainage shaft according to claim 8, wherein a side inlet pipe adjoins the at least one side inlet opening.

10. Drainage shaft according to any one of claims 1 to 9, wherein the drainage shaft further comprises a fastening element.