NL1042809B1 - Drainage system for connection to an infiltration system - Google Patents

Abstract

Drainage system for connecting to an infiltration system, wherein the drainage system comprises at least one gutter element having at least one inlet, at least one outlet and a reservoir having a bottom, the drainage system being configured for having in use relative to the direction of gravity the at least one inlet at an upper part of the drainage system, the bottom at a lower part of the drainage system, and the at least one outlet in between the bottom and the at least one inlet.

Description

© 1042809 © B1 PATENT © Application number: 1042809 © Int. Cl .:

E03F 1/00 (2018.01) E03F 5/04 (2018.01) © Application submitted: April 4, 2018 © Application registered:

October 2019 © Request published:

© Patent granted:

October 2019 © Patent issued:

October 2019 © Patent holder (s):

Wavin B.V. in Zwolle.

© Inventor (s):

T.B. (Tom) Lansinkte Gramsbergen.

H.J.M. (Marcel) Jager in Westerhaar-Vriezenveensewijk.

© Authorized representative:

Dr. Ir. F.M. van Bouwelen in Munich.

54) Drainage system for connection to an infiltration system

57) Drainage system for connecting to an infiltration system, comprising the drainage system comprises at least one gutter element having at least one inlet, at least one outlet and a reservoir having a bottom, the drainage system being configured for having in use relative to the direction of gravity the at least one inlet at an upper part of the drainage system, the bottom at a lower part of the drainage system, and the at least one outlet at between the bottom and at least one inlet.

B1 1042809

This patent has been granted regardless of the attached result of the research into the state of the art and written opinion. The patent corresponds to the documents originally submitted.

Drainage system for connection to an infiltration system

The present disclosure relates to a drainage system for connection to an infiltration system. The present disclosure also relates to a method for guiding water away from streets. Normally, infiltration systems and drainage systems are used separately. A drainage system may include a gully that is placed for instance in a street and collects rain water for very fast disposal down the drainage system in, for instance, a river, using gravity. Infiltration systems tend to be blockshaped structures, for instance, cubics, which are provided with a water permeable bottom, top and side walls that enclose together a cavity. The top, bottom and walls allow for penetration of water into the cavity. Water that ended up in the ground, ie water that was not collected by a gully and not transferred away via a drainage system, finds its way through the walls of the structure into the cavity from where it may slowly find its way out of the structure again through the walls and / or the bottom back into the ground. Infiltration systems are also referred to as attenuation systems.

There is a need for alternative systems.

Summary of the present disclosure

Provided is a drainage system for connecting to an infiltration system. The drainage system comprises at least one gutter element having at least one inlet, at least one outlet and a reservoir having a bottom. The drainage system is configured for having in use relative to the direction of gravity the least one inlet at an upper part of the drainage system, the bottom at a lower part of the drainage system and the least one outlet, for instance, between the bottom and the least one inlet. Advantageously, the drainage system thus provides a buffer for rain water that enters the least one inlet. Only when the water level in the reservoir has reached the level of the least one outlet, water will leave the drainage system. In practice, the least one outlet is directed toward or into an infiltration system. Preferably, the least one inlet comprises a number of outlet opening and the least one outlet comprises a number of outlet opening.

In an embodiment each or the outlet opening is narrower than the largest inlet opening. Advantageously, leaves which may have entered the inlet opening are unlikely to leave the outlet opening and may sink to the bottom of the reservoir, and wait to be cleaned away. Thus, such leaves will not block a passage for water into the infiltration system

In an embodiment the inlet opening are spatially separated from each other in a first pattern that resembles a line. Such, such a drainage system can be put alongside an infiltration system. For instance, where the infiltration system is placed under a runway at an airport, the drainage system can be placed such that the inlet opening form a line along the runway.

In an embodiment pairs or the inlet opening are in the line at regular distances from other pairs or the inlet opening. Herewith, the weakness introduced by the opening can be balanced by the strength of the parts of the system that do not entail an opening.

Preferably, each inlet opening has a maximum length of about 35 mm. Also preferably, each inlet opening has a maximum width of about 15 mm.

In an embodiment, each inlet opening has its length direction corresponding to the direction of the line, as referred to above.

In an embodiment, the outlet opening each have a maximum diameter that is narrower than the smallest dimension or each of the inlet opening. Like, items of a certain size, such as leaves, may find their way into the drainage system through the inlet opening, but may be too large for finding their way out of the outlet opening. As such, the drainage system may filter the water and ensure that such leaves will not block passages for water into the infiltration system. The leaves will sink over time in the reservoir down to the bottom and wait to be cleaned away. Preferably, each outlet opening has a maximum diameter of 14 mm.

In an embodiment, the outlet opening are grouped in groups or outlet opening, where the groups are spatially separated from each other. This allows for connecting up with an infiltration system that has for instance columns. Ideally, the groups are positioned such that the outlet is directed to opening between the columns, instead of directed onto the columns. Preferably, the system is provided with at least one block-shaped protrusion and one of the groups or outlet opening is provided in a protruding surface or one of the block-shaped protrusions. This allows for directing water that leaves the drainage system to really enter the infiltration system. Preferably, each of the block-shaped protrusions is in use suitable for protruding between two columns of an infiltration system, as explained above. Preferably each of the block-shaped protrusions is provided with side connectors for adopting a connected condition in which the block-shaped protrusion is connected to the columns between which it is placed.

In an embodiment the least one inlet opening faces water that follows the direction of gravity. This provides for a suitable way of collecting water in the drainage system. Preferably, each of the inlet opening is relative to the direction of gravity, situated a little lower than its immediate surrounding, so that water tends to flow optimally into the inlet opening. Preferably, the least one outlet opening extends parallel to the direction of gravity. The least one outlet opening will be used to a larger extent when much more water is available for leaving the outlet opening. There is a certain threshold for overcoming, preventing floating items, such as small leaves, from being flushed out of the outlet opening.

In an embodiment, the least one outlet allows for more flow of water than the least one inlet. It is unlikely that the drainage system will ever be fully filled up with water to an extent that the water will again leave the drainage system via the least one inlet opening, or not just enter the inlet opening.

In an embodiment, within the gutter element the bottom is concave for easy cleaning. Preferably, each gutter element is provided with a sleeve and a spigot for connecting to another gutter element. Likewise, the drainage system can extend in a longitudinal direction following a line parallel to a lengthy path. Preferably, one of the gutter elements is provided with a possibility for connecting to an accessible gully, so that with a hose entering that gutter element from that gully at least a number of gutter elements can be internally cleaned.

In an embodiment, the bottom is provided on the outside with bottom connectors for adopting a connected condition in which the bottom is connected to an infiltration unit on which it is placed. Preferably, the bottom connectors allow for placement of the bottom on a bottom part of an infiltration unit and therewith establish a point of contact, and for then using the point of contact as a pivotal point for rotating the gutter element in a connected condition, optionally assisted by pushing the gutter element into a predetermined position of the infiltration unit.

Preferably, each one of the least one gutter element extends significantly more in the longitudinal direction compared to a transverse direction, the longitudinal direction and the transverse direction are each in an imaginary plane that is normal to the direction of gravity. Preferably, the one gutter elements are connectable to each other so that the reservoir extends in a longitudinal direction, and so that the drainage system extends in a longitudinal direction. For that purpose each gutter element may include a sleeve end and a spigot end.

The present disclosure is also directed to a method for guiding rainwater away from streets.

The present disclosure is further explained with reference to an exemplary drawing, in which:

FIG. 1 shows a first cross-sectional view or an example of a drainage system according to the present disclosure, as connected to an infiltration system;

FIG. 2 shows a side view of an example or a drainage system according to the present disclosure for connecting to an infiltration system;

FIG. 3 shows again a side view or such an example;

FIG. 4 shows a part or a cross-sectional view or such an example or a drainage system according to the present disclosure, as connected to an infiltration system;

FIG. 5 shows an example or an infiltration system having connected to an example or a drainage system according to the present disclosure;

FIG. 6 shows a perspective view of an example of a drainage system according to the present disclosure as connected to an infiltration system;

FIG. 7 shows a close-up or a part of an example or a drainage system according to the present disclosure;

FIG. 8 shows a top view of a drainage system according to an example of the present disclosure;

FIG. 9 shows a part or a top view or an example or a drainage system according to the present disclosure connected to an infiltration unit;

FIG. 10 shows a drainage system according to an example of the present disclosure, as being connected up with an infiltration system;

FIG. 11 shows two ends of an example of a drainage system according to the present disclosure; and

FIG. 12 (a) - (c) show examples of a drainage system according to the present disclosure.

An example of a drainage system according to the present disclosure is presented in the Figures. The block-shaped protrusion is not necessarily strictly having the shape of a block. An example of an infiltration system to which the drainage system may be connected is presented in WO 2016/042139, WO 2016/042140 and in WO 2016/042141. In this example no side walls are shown. For this example these are optional and often only in place on external sides or a cluster of the infiltration systems as shown. However, it should be clear that a drainage system according to the present disclosure may be adapted to fit any other infiltration system. Below, parts of a drainage system according to an example of the present disclosure and / or parts of an infiltration system are listed together with their reference signs used in the drawing.

1. Drainage system

2. Gutter element

3. Inlet

4. Outlet

5. Reservoir

6. Bottom

7. Infiltration system

8. Outlet opening

9. Inlet opening

10. Block-shaped protrusion

11. Column of an infiltration system

12. Side connector

13. Bottom connector

14. Sleeve

15.

Spigot

16.

Connection to an accessible gulley

17.

Gulley

Claims (25)

Conclusions A drainage system for connecting to an infiltration system, wherein the drainage system comprises at least one drain element with at least one inlet, at least one outlet and a reservoir with a bottom, the drainage system being configured for the direction of the have gravity in use, the at least one inlet at the top of the drainage system, the bottom at the bottom of the drainage system and at least one outlet between the bottom and the at least one inlet. The drain system of claim 1, wherein the at least one inlet comprises a plurality of inlet openings and the at least one outlet comprises a plurality of outlet openings. The drain system of claim 2, wherein each of the outlet openings is smaller than the largest inlet opening. The drain system of claim 1, 2 or 3, wherein the inlet openings are spatially separated from each other in a first pattern resembling a line. The drainage system of claim 4, wherein pairs of the inlet openings in the line are at regular distances from other pairs of inlet openings. The drain system of claim 5, wherein each of the regular distances corresponds to the length of a pair of the inlet openings. A drain system according to any of claims 2-6, wherein each inlet opening has a maximum width of approximately 15 mm. A drain system according to any of claims 2-7, wherein each inlet opening has a maximum length of approximately 35 mm. Drainage system according to one of claims 2 to 8, as far as dependent on claim 4, wherein in each inlet opening the longitudinal direction corresponds to the direction of the line. The drain system of any one of claims 2-9, wherein the outlet openings each have a maximum diameter that is smaller than a smallest dimension of each of the inlet openings. The drainage system of claim 10, wherein each outlet opening has a maximum diameter of 14 mm. A drain system according to any of claims 2-11, wherein the outlet openings are grouped into groups of outlet openings, the groups being spatially separated from each other. The drainage system of claim 12, wherein the system is provided with at least one block-shaped protrusions and one of the groups of outlet openings is provided in a projecting surface of one of the block-shaped protrusions. A drainage system according to claim 12 or 13, wherein the at least one block-shaped protrusion is adapted to protrude between two columns of an infiltration system in use. The drainage system of claim 13 of 14, wherein each of the block-shaped protrusions is provided with side connectors for assuming a connected state in which the block-shaped protrusion is connected to the columns between which it is placed. A drain system according to any one of the preceding claims, wherein the at least one inlet opening is directed to water that follows the direction of gravity. A drain system according to any one of the preceding claims, wherein the at least one outflow opening is parallel to the direction of gravity. A drain system according to any one of the preceding claims, wherein the at least one outlet allows a greater flow of water than the at least one inlet. A drain system according to any one of the preceding claims, wherein the bottom within the channel element is concave for easy cleaning. A drain system according to any one of the preceding claims, wherein the bottom is provided with bottom connectors on the outside for assuming a connected state in which the bottom is connected to an infiltration unit on which the bottom is placed. The drainage system of claim 20, wherein the bottom connectors permit placement of the bottom on a bottom portion of an infiltration unit to thereby establish a contact point, and then use the contact point as a pivot point for rotating the channel element in a connected state. A drain system according to claim 20, wherein each of the at least one channel elements extends significantly more in the longitudinal direction than in the transverse direction, wherein the longitudinal direction and the transverse direction each lie in an imaginary direction that is normal to the direction of gravity. A drain system according to any one of the preceding claims, wherein the at least one drain element can be connected to each other such that the reservoir extends in the longitudinal direction, and so that the drain system extends in the longitudinal direction. The drain system of claim 20, wherein each channel element is provided with a sleeve and key for connection to a different channel element. A drain system according to any one of the preceding claims, wherein one of the channel elements is provided with a possibility to connect to an accessible channel, so that with a hose that enters that channel element from that channel at least a number of channel elements can be cleaned internally. 1/8