EP1826334B1 - Emergency overflow - Google Patents

Description

The invention relates to an emergency overflow according to the preamble of claim 1. Such emergency overflow is from the DE 299 07 721 U1 known.

Flat roofs are provided for drainage with a Gullisystem that normally takes over the entire drainage of the flat roof. However, it is necessary to provide one or more emergency overflows for malfunctions of the gate system, for example due to blockage of the processes. Such a known emergency overflow has a round drain pipe, which is installed via suitable fasteners in the attic of the flat roof and takes over a water drainage in case of malfunction of Gullisystems.

It is an object of the present invention to provide an emergency overflow for flat roofs, the Wasserabführleistung over known emergency overflows is significantly improved.

The solution of this object is achieved by the features of claim 1.

First, the improvement of the Wasserabführleistung is achieved by a drain pipe with a continuous rectangular cross-section, which also has a rectangular inlet opening. Further, according to the invention, a damming element is provided which surrounds the inflow opening on all sides and has a selectable height, which causes a downwardly directed overflow of the accumulation element into the inflow opening only after this height of the accumulation element has been overcome. This necessary overcoming of the accumulation element and the resulting water flow directed downwards onto the inflow opening further increases the water removal capacity, which has resulted in investigations carried out within the scope of the invention.

The fact that the inflow opening is arranged in a base plate of the emergency overflow, results in an installed state downwardly offset arrangement of the drainage pipe with respect to the flat roof level, which further increases the drainage capacity.

The dependent claims have advantageous developments to the content.

Furthermore, the drainage pipe can be arranged at a selectable angle to the horizontal or to the roof plane, with a particularly preferred angle being about 3 °.

The damming element can be constructed of preferably three wall parts fixed at right angles to each other, which connect to a mounting plate of the emergency overflow and which are fastened on a connecting collar of the emergency overflow. In the final assembly state, these wall parts with the mounting plate form a box which encloses the inflow opening on all sides and results in the previously explained effect of increasing the water drainage performance.

Preferably, the material of the drainage pipe, the mounting plate and the base plate, which can form a structural unit, either of rigid PVC, polypropylene or polyethylene.

However, the material of the connection sleeve, which is usually PVC, EVA or CPE, can in principle always be adapted to the material of the roofing membrane of the respective flat roof in which the emergency overflow according to the invention is to be installed.

Fig. 1

eine schematische vereinfachte Schnittdarstellung durch einen erfindungsgemäßen Notüberlauf, und

Fig. 2

eine schematisch leicht vereinfachte perspektivische Darstellung des Notüberlaufes gemäß Fig. 1.

Further details, advantages and features of the present invention will become apparent from the following description of an embodiment with reference to the drawing. It shows:

Fig. 1

a schematic simplified sectional view through an emergency overflow invention, and

Fig. 2

a schematically slightly simplified perspective view of the emergency overflow according to Fig. 1 ,

As is clear from the Fig. 1 and 2 results, the emergency overflow 1 according to the invention on a drain pipe 2, which has a rectangular cross-section throughout. The drain pipe 2 has a likewise rectangular inlet opening 3, which is arranged in the illustrated particularly preferred embodiment in the plane of a base plate 6, which together with a mounting plate 5, which is arranged at right angles to the base plate 6, with the drain pipe 2 a one-piece Part forms.

On the mounting plate 5 and the base plate 6 a connection sleeve 4 is further attached, which in the assembled state with in the Fig. 1 and 2 not shown detail of the respective flat roof liquid-tight connected, preferably welded, is.

As the Fig. 1 and 2 Furthermore, the emergency overflow 1 according to the invention furthermore has a retention element 7, which is fastened, preferably welded, to the connection sleeve 4, and surrounds the inlet opening 3 on all sides with the mounting plate 5, which is particularly true Fig. 2 clarified.

Fig. 2 further shows that in the illustrated embodiment, the baffle 7 has three mutually perpendicular wall parts 8, 9 and 10, of which connect the wall parts 8 and 10 in the assembled state of the mounting plate 5. As Fig. 1 Finally, between the base plate 6 and the drain pipe 2 is a Inclined wall 11 is arranged, which results in a further increase in the drainage capacity compared to a vertical orientation.

The wall parts 8 to 10 in this case have a selectable height, which usually depends on the standard drainage system, which is present in the flat roof, in which the emergency overflow 1 according to the invention is to be integrated.

Further investigations carried out in the context of the invention have shown that the drainage performance can be optimized by optimizing the ratio between the height of the damming element and the distance of the wall part 9 from the mounting plate 5 and thus the length of the development of the wall parts 8, 9 and 10.

In the following table some particularly preferred examples are shown in which the dimension "h" the height of the tamping element 7, the dimension "1" the length of the development of the wall parts 8, 9, 10 and the measure "t" the distance of the wall part 9 of the mounting plate 5 denote. Accumulation (mm) Outflow Q (l / s) detected Accumulation (0-height roof) With aperture 1.
(U shape)
h = 35 mm
l = 300 mm
t = 135 mm With aperture 2.
(U shape)
h = 35 mm
l = 380 mm
t = 180 mm With aperture 3.
(U shape)
h = 35 mm
l = 580 mm
t = 280 mm 5 - - - 15 - - - 25 - - - 35 - - - 45 1.3 1.6 1.8 55 3.7 4.4 4.9 65 5.9 7.1 9.3 75 8.7 10.8 13.1

LIST OF REFERENCE NUMBERS

1

overflow

2

waste pipe

3

inlet opening

4

connecting sleeve

5

mounting plate

6

baseplate

7

retaining element

8th

Wall parts of the accumulation element

9

Wall parts of the accumulation element

10

Wall parts of the accumulation element

11

Inclined wall between base plate 6 and drainage pipe 2

α

Angle of the drainage pipe 2 with respect to the horizontal H or the flat roof level

Claims (8)

1. Emergency overflow (1) comprising

   - a drain pipe (2) having a rectangular inflow opening (3);

   - a mounting plate (5) disposed on the drain pipe (2);

   - a connecting collar (4) which is disposed on the mounting plate (5) and adapted to be fastened at said place; and

   - an accumulation element (7),

   - wherein a baseplate (6) is provided which is disposed on the drain pipe (2);

   - wherein the connecting collar (4) is also disposed on the baseplate (6) and adapted to be fastened at said place;

   - wherein the accumulation element (7) is fastened onto the connecting collar (4) and surrounds the inflow opening (3) with the mounting plate (5) on all sides, characterized in

   - that the drain pipe (2) has a continuous rectangular cross-section, and

   - that the inflow opening (3) is arranged in the baseplate (6).
2. Emergency overflow according to claim 1, characterized in that the drain pipe (2) is arranged at a selectable angle (α) relative to the horizontal (H).
3. Emergency overflow according to claim 2, characterized in that the angle (α) is about 3°.
4. Emergency overflow according to any one of claims 1 to 3, characterized in that the accumulation element (7) comprises three wall parts (8 to 10) which are fastened to one another at a right angle and which form a box surrounding the inflow opening (3) with the mounting plate (5).
5. Emergency overflow according to claim 4, characterized in that the height of the wall parts (8 to 10) can be adapted to the respectively existing location drain system of the flat roof.
6. Emergency overflow according to any one of claims 1 to 5, characterized in that the material of the drain pipe (2), the mounting plate (5) and the baseplate (6) is either rigid PVC, polypropylene or polyethylene.
7. Emergency overflow according to any one of claims 4 to 6, characterized in that the distance of the accumulation element (7) or its wall part (9) opposite to the mounting plate (5) can be adapted to the desired water drain performance (Q).
8. Emergency overflow according to any one of claims 1 to 7, characterized in that an inclined wall (19) is disposed between the horizontal baseplate (6) and the drain pipe (2) with an inclined position relative to the horizontal (H), said inclined position being selectable for the further optimization of the water drain performance (Q).

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