DE102010006801A1 - Roof dewatering device for use in building, has flow-through container, and bypass for overtopping container in case of accumulation of large amount of water, where container and bypass are integrated into downpipe or downpipe section - Google Patents

Abstract

The device has a flow-through filter container (4), and a filter medium arranged in the container. A bypass (14) is provided for overtopping the container in case of accumulation of large amount of water. The container and the bypass are arranged in vertical flow direction and integrated into a downpipe (1) or a downpipe section (15) connected with the downpipe. Sleeves (2, 3) are arranged over the section, and the downpipe section has a cross-section extension in an area of the container and the bypass, where the bypass is formed by an intermediate area between the container and the section.

Description

The invention relates to a roof drainage device with a flow-through container in which filter means are arranged, and with a bypass for overflow of the filter container in the event of the onset of large amounts of water, according to the preamble of claim 1.

Roof drainage systems are known in many forms. Here, gutters are used in the roof area, which are connected with rainwater downpipes. The rainwater accumulating on the roof runs first in the gutters and from there through the rainwater downpipes down, there is a catch of rainwater either in cisterns or there is a direct discharge into the sewer.

Furthermore, systems are known with which rainwater can be cleaned in a certain way. This is because either the rainwater can be contaminated with particulate matter depending on the region, in particular corroded copper or zinc, or accumulate on the roof industrial suspended matter and then rinsed by rainwater.

In the last-mentioned case, accumulation of such suspended suspended matter may occur after, for example, longer rain-free periods. At the next downpour these are then rinsed off at once, which can lead to a temporarily very high concentration of such substances in the resulting rainwater. For this reason, appropriate filter devices are useful.

Such a roof drainage with filter device is from the US 2009/0014372 known. Here, the downpipe is fluidly connected to a recessed filter block in the ground. This can be flushed through an influx of storm water through a bypass.

The disadvantage here on the one hand, that the device is to be admitted in the ground, creating considerable additional construction costs, and on the other an additional maintenance costs.

Another disadvantage is that the filter block is flowed through horizontally, whereby the filter effect is no longer in full influence of the usable potential energy of the resulting rainwater.

The invention is therefore the object of further developing a roof drainage so that the device without earthworks easier to assemble and above all easier to maintain.

The stated object is achieved in a roof drainage of the generic type according to the invention by the characterizing features of claim 1.

Further advantageous embodiments are specified in the dependent claims.

Core of the invention is that the device, including flow-through filter container and bypass is integrated into a downpipe, or an associated downfall pipe section. As a result, the filter arrangement is to be arranged substantially vertically, whereby an optimal flow occurs, under the influence of the potential energy of the rainwater incurred in the downpipe. In this way, good filter effects at high volume throughput can be achieved by the upcoming higher dynamic pressures. Furthermore, no earthworks are necessary because the filter container can be integrated into the downpipe or in a corresponding pipe section.

It should also be noted here that the filter container according to the invention is a filter container through which the rainwater flows longitudinally, and not a downwardly closed filter container. The filter is thus a continuous filter in which the contaminated rainwater enters the top of the filter and runs out of the filter at the bottom.

In an advantageous embodiment, it is provided that both the filter container and the bypass are arranged in a largely vertical flow direction (vertical). In this way, high volume flows are achieved both in the filter area and in the bypass area.

In a further advantageous embodiment, it is stated that the downpipe section is arranged with filter container and bypass arranged between the upper rainfall pipe section and the lower Regefallrohrabschnitt, and that the upper inlet to the filter container in diameter is greater than the upper rainfall pipe section or, and leaves a distance, such that with increasing water backlog the backwater stormwater drains through the bypass into the lower rainfall pipe section.

For fixing is provided in a further advantageous embodiment that slidable sleeves are arranged above the downpipe section or the rainfall pipe sections, which are pushed by the intermediate sliding of the downpipe section in the gap of the downpipe over the blunt separation points so that the interposed downpipe section thus fixed to the rainfall pipe sections and / or is sealable. Ie. By sliding the sleeves over the separation points, a fixed securing takes place along the longitudinal or vertical axis of the downpipe. The fact that the respective separation points end blunt and the outer diameters are the same, there is the interposed drop tube section there of the resulting desired position firmly.

At the same time, the inner diameter of the sleeves can be adapted to the outer diameter of the downcomer section and the downpipe so that even an axial displaceability of the cuff with little effort is possible, but otherwise the cuffs sit securely and firmly. Thus, a good seal of the thus segmented downpipe is done over this.

In a further advantageous embodiment, it is stated that the downpipe section, at least in the region of the integrated filter container and the bypass, has a cross-sectional widening in which the filter container and the bypass are arranged, and in that the bypass is formed by the intermediate space between the filter container and the downcomer section. This is a highly integrative solution that can be retrofitted even by retrieving an existing downpipe. In addition, earthworks are completely eliminated even after retrofitting.

It thus shows that the invention are easy to install both in new systems of roof drainage, as well as in retrofitting the effort is significantly reduced, in contrast to known devices of this kind.

In a further advantageous embodiment, it is provided that above the filter container and within the downcomer section, a flow pipe is arranged, which is spaced over an air gap from the filter container to be flowed through, so that in case of excessive waterfall, the rainwater flows directly through the arranged parallel to the Filterbehätnis bypass. Ie. that the system has passive safety by automatically overflowing the filter in an emergency and without mechanical flaps. This makes the system completely maintenance-free. The function is such that when the filter container is supplied with more water than the flow capacity of the filter container allows, then it comes within the filter container to a water backlog. This backwater causes the water in the filter tank to rise until the water level reaches an overflow edge. This then flows into the bypass and the increased water supply then passes through the bypass, as long as this increased water attack persists. Only when the water drop falls below the Rückstaugrenzwert of the flow in the filter container, all accumulating water is passed through the filter container and the bypass is empty. In addition, the first rinse (first flash) from the roof is always cleaned in this way.

At the same time the filter change or a change of the filter material makes an opening of the system necessary from time to time. This is done simply by moving the upper and lower cuff and removing the fall tube section according to the invention.

In a further advantageous embodiment, it is stated that the lower outlet of the filter container has a flow-reducing element, via which quasi a residence time of the rainwater in the filter container is achieved before the filtered roof / rainwater continues to run in the direction of sewer and / or a cistern.

In a further advantageous embodiment it is stated that the flow-reducing element can be adjusted in the flow (cross-section). As a result, two effects are achieved. The first effect is that it allows the residence time of the rainwater in the filter container to be adjusted, which allows the cleaning effect to be set. The second effect is that, with the adjustability of the flow, the backflow effect is adjustable in the event of an excessive water attack. Thus, the critical limit of the flow is adjustable, from which waterfall the filter vessel is to be overflowed by the bypass.

In a further advantageous embodiment, it is stated that the fluidic outlet of the filter container has a pipeline which opens into a cistern to feed the filtered rainwater to a cistern, and the bypass opens into the sewer to direct excess unfiltered rainwater into the sewer. Thus, the device according to the invention can also be used for filling a cyst. When using a rainwater storage cistern, the significant advantage of this facility is that only filtered rainwater reaches the cyst. If, in the event of an increased water supply, the bypass is used primarily for rapid drainage, then it will not pass unfiltered rainwater into the cistern, but through the bypass directly into the sewage system. Only when the rainwater accumulation normalizes again and all water exclusively passes through the filter again, only then, without valve flap, is the derivation to the cyst active again.

In the last advantageous embodiment, a particularly advantageous embodiment is specified, in which an active reversal of a valve flap takes place, depending on whether the cyst has reached the fully filled state or not. This takes place by the filter container is provided with a bottom-side or at least near-bottom Verntilklappe which is closed in unfinished state of the cyst, and which can be opened by mechanical and / or electrical means as soon as the cyst reaches the final filling. What this means is that as long as the cyst is not full, the rainwater enters the top of the filter container and runs into the bottom of the supply line to the cyst. However, if the cistern is filled or reaches the maximum level, then the bottom of the valve container of the filter container is opened either mechanically via a 3-way ball valve or via electromechanical means, so that the rainwater drains filtered into the sewer. Only when the level in the cistern sinks again, rainwater is passed again after passing through the filter into the cyst. In both positions of the valve flap is of course additionally also the bypass in the manner described above active and directs excess rainwater unfiltered into the sewer, until the rainfall normalizes again. What is generally avoided even in an emergency, is that due to excessive rainfall unfiltered rainwater can run into the cyst.

The invention is illustrated in the drawing and explained in more detail below.

It shows:

1 : Design example with flow reduction element and bypass

2 : Example for filling a cyst

3 : Design example with cistern and reversing valve

1 shows a first embodiment of the invention. The roof drainage is usually done via gutters, which are fluidly connected to drain with rainwater downpipes. These run vertically along the building exterior wall and then usually open into the sewer. According to the invention, such a rainwater downfall pipe is interrupted at a location close to the ground, or at a standing height of a person, via a section, so that the remaining rainwater downfall pipe consists of an upper downfall pipe section 1 and a lower downfall section 8th consists. In between, the device according to the invention is now arranged. The upper and lower pipe sections 1 and 8th end up dull. In between, the pipe section is now introduced, the filter container 4 as well as the bypass 14 integral. Inside the pipe section 15 is still an inner tube from above 20 created, which has a gap distance in the upper inlet opening 13 of the filter container 4 empties. This inlet opening 13 is greater in cross section than the cross section of the inner tube 20 , This ensures that when the drainage capacity through the filter container is exceeded, the backwater level over the inlet opening 13 overflows, and the overflowing rainwater unfiltered runs directly through the bypass into the sewer.

The filter container is filled with filter material (Filtergranutlate, filter pellets, activated carbon etc), for the separation of, among other heavy metals. Bottom side is in the filter container a reduced cross-section or adjustable in cross-section choke 12 arranged, which has the task to set a defined restriction of the water flow, thereby increasing the residence time of the rain water in the filter container and thus the filter effect.

The pipe section 15 is extended in cross-section in the area around the integrally arranged filter container, such that there is a gap between the wall of the pipe section 15 and the filter container 4 results. This space forms the said bypass 14 ,

Parts of the device can be distributed over the length, in the in 1 illustrated manner, be divided into sections. Each of these sections as well as the transition to the upper and lower downfall section 1 and 8th are positionally secured with sliding sleeve rings. These are simply over the upper and lower downpipe 1 and 8th pushed. Then the downpipe section 15 placed in between, and the cuff 2 and 7 are then shifted so that they are partly over the sections 1 and 8th and partly over the edges of the pipe section 15 over rich. Thus, the device is not only easy to install, even later, but can also be removed for filter inspection and used again.

The upper downfall section 1 is connected to the gutter, and the lower down pipe section 8th subsequently flows into the sewage system. With this embodiment, an at least heavy metals, if necessary, also contaminated by other substances rainwater is cleaned, and thus significantly reduced the wastewater treatment plant of the sewer, or now a percolation is possible.

2 shows an embodiment example in which the lower portion of the filter container with a pipe outlet 10 to a cistern not shown here is provided. This application is intended for the application in which "filtered" rainwater is to be collected in a cistern. This is the floor 5 of filter container 4 closed. If, in this case, there is either a backlog of excess rainwater, or a backlog due to overfilling of the cyst, the water level in the filter tank rises 4 as already described above, so that the water level then the upper inlet opening 13 reached, and in the bypass 14 drained, so that then unfiltered the rainwater over the bypass 14 into the sewer system.

In a last embodiment according to 3 is the ground 5 of the filter container 4 again with a valve flap 9 Mistake. This valve flap 5 is via mechanical or electrical control means 11 actuated, ie opened, when the cystern, determined via a level measurement, is filled.

In contrast to the exemplary embodiment according to 2 if there is a filled cyst, there will be no overflow into the bypass 14 and causes a flow of unfiltered water into the sewer. Instead, when the cysts are filled, the valve flap will open 9 opened so that now filtered rainwater is directed into the sewer.

The reversal of the valve flap 9 can be done with known means that control the reversal depending on the level in the cyst.

LIST OF REFERENCE NUMBERS

1

Rainwater downpipe, upper section

2

cuff

3

cuff

4

filter container

5

Bottom of the filter container

6

cuff

7

cuff

8th

Rainwater downpipe, lower section

9

valve flap

10

Departure to the cystern

11

Level control device of the cyst

12

throttle

13

Upper inlet of the filter container

14

bypass

15

Downpipe section in the integrated filter and bypass

20

Upper inner tube / inlet tube

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2009/0014372 [0005]

Claims (10)

Roof drainage device with a flow-through container, are arranged in which filter means, as well as with a bypass to the overflow of the filter container in the event of the onset of large quantities of water, characterized in that the device samit durchströmbarem filter container ( 4 ) and bypass ( 14 ) in a downpipe ( 1 ), or an associated down pipe section ( 15 ) is integrated. Roof drainage device according to claim 1, characterized in that both the filter container ( 4 ) as well as the bypass ( 14 ) are arranged in a largely vertical flow direction (vertical). Roof drainage device according to claim 1 or 2, characterized in that the downpipe section ( 15 ) with filter container ( 4 ) and bypass ( 14 ) between the upper rainfall pipe section ( 1 ) and the lower rainfall pipe section ( 8th ), and that the upper inlet ( 13 ) to the filter container in diameter is greater than the upper rainfall pipe section ( 1 ) respectively ( 2 ), and a distance ( 13 ), in such a way that, with increasing backwater, the backwater 14 ) in the lower rainfall pipe section ( 8th ) expires. Roof drainage device according to claim 3, characterized in that above the downpipe section ( 15 ) and / or the rainwater pipe sections ( 1 . 8th ) slidable cuffs ( 2 . 3 . 6 . 7 ) are arranged, which after lateral intermediate sliding of the downcomer section ( 15 ) are pushed over the blunt separation points, that the interposed downpipe section ( 15 ) so that at the rainfall pipe sections ( 1 . 8th ) is fixable in place and / or sealable. Roof drainage device according to claim 4, characterized in that the downpipe section ( 15 ) at least in the area of the integrated filter container ( 4 ) and the bypass ( 14 ) has a cross-sectional widening, in which the filter container ( 4 ) and the bypass ( 14 ) and that the bypass ( 14 ) through the intermediate space between the filter container and the downpipe section ( 15 ) is formed. Roof drainage device according to claim 5, characterized in that above the filter container ( 4 ) and within the downcomer section a flow pipe ( 20 ) is arranged, which one over an air gap to be flowed through the filter container ( 4 ) is spaced, such that in case of excessive water attack, the rainwater directly through the parallel to the Filterbehätnis ( 4 ) arranged bypass ( 14 ) overflowed. Roof drainage device according to claim 6, characterized in that the lower drain or floor ( 5 ) of the filter container ( 4 ) a flow reduction element ( 12 ), over which quasi a residence time of the rainwater in the filter container ( 4 ) is achieved before the filtered roof / rain water continues towards sewer and / or a cistern. Roof drainage device according to claim 7, characterized in that the flow-reducing element ( 12 ) in the flow (cross section) is adjustable. Roof drainage device according to claim 7, characterized in that the fluidic output of the filter container ( 4 ) a pipeline as outlet ( 10 ), which flows into a cyst to feed the filtered rainwater to a cystern, and the bypass ( 14 ) flows into the sewerage to direct excess unfiltered rainwater into the sewage system. Roof drainage device according to claim 9, characterized in that the filter container ( 4 ) with a bottom-side or at least bottom-near Verntilklappe ( 9 ), which is closed in the unfinished state of the cyst, and which by mechanical and / or electrical means ( 11 ) as soon as the cyst reaches the final fill state.

Images