DE1948214C3 - Roof drain or the like - Google Patents

Description

Lid 6 is larger than that of the downpipe 1, however smaller than the width of the water collection basin 2. As a result, the draining water can only through the water collecting trough 2 and through the water passage openings 9 provided in the wall 8 of the cover 6 Elaströmen from the roof surface 4 into the Faiirube 1. Is the amount of water that accumulates per unit of time less than the amount of water that the downpipe 1 - based on one of the total Pipe cross-section filling flow - can absorb and divert as an invertebrate column of water, so the water collection basin 2 is only partially filled. In this case, of course, air can pass through Water penetration openings 9 of the cover 6 penetrate into the inlet of the downpipe 1. However, since the inflowing amount of water is less than the largest capacity of the downpipe 1, this can Discharge the amount of water that occurs, even if there is a possible vortex formation. However, is the incidental The amount of water as large or greater than the largest capacity of the downpipe 1 fills the Water collecting trough 2 up to its upper edge 3 with water. In this case the water prevents in the water collecting trough 2 together with the uninterrupted Disc 7 and with the water passage openings 9 which make vortex formation more difficult. If air entered the downpipe 1. This then directs the resulting amount of water as a uniform. eddy-free water column. The diameter! of the downpipe 1 can consequently after a whole Pipe cross-section filling flow can be measured. The number and size of the water passage openings 9 in the wall 8 of the cover 6 are dimensioned so that they drain the water throttle as little as possible from the water collecting trough 2 into the downpipe 1.

Of course, the invention is not limited to the embodiment shown in FIGS. For example, the ceiling! the shape of a simple, circular!), horizontal Have disk 10, as shown in FIG. The edge of the disc 10 is sufficient in the radial direction far above the inlet of the downpipe 1.

In addition, as already mentioned, the inventive idea not only used for roof drains but for all possible liquid drains in which the above problem occurs in the same way.

1 sheet of drawings

Claims (2)

ix As a result of the inventive design of the _ ... roof drain or the like, the penetration of air Patent claims: ^ ^ Downpipe _ as long as the water collecting trough 1. Roof drain or the like, consisting of one filled with water - prevented. This will make the Downpipe from the bottom of an in the roof 5 formation of an air vortex inside the FaU surface provided water collection trough made impossible to pipe out. So it results on goes, which is larger than the cross section of the case inlet of the downpipe such ratios that pipe, characterized in that the water in the downpipe is essentially above it at a distance above the inlet of the downpipe (1) flows evenly distributed over the entire cross-section. There one uninterrupted disk (7; 10) arranged io through can be at a certain per unit of time is, the lower edge of which, under the upper edge, is the amount of water to be drained off the diameter of the (3) the water collecting trough (2) is located urid the vertical pipe compared to the previously common Ablarge than the inlet of the downpipe (1) and make measurements considerably smaller. This offers the is smaller than the water collection trough (2). Possibility of calculating the material costs for the downpipe 2. Roof drain according to claim 1, thereby considerably reducing it. With the subject matter of the invention indicates that at the edge of the disc (7) forms the water collection trough together with the a disc uninterrupted to the bottom of the water collecting muide (2), as it were, a "water itself." extending, with water passage opening closure «against the ingress of air into the gene (9) provided wall (8) is attached. Downpipe. 20 A particularly advantageous embodiment of the invention is that at the edge of the Disc one to the bottom of the water collecting trough extending, with water passage openings The invention relates to a roof drain or the like, provided wall is attached. This wall contributes to that consisting of a downpipe, which from the bottom 25, the formation of uniform vortices in the downpipe to effectively prevent a water seed in the roof area. That way you can Melmulde goes out, which is larger than the cross-section the depth of the water collection trough, even if the of the downpipe. The vertical downpipe is able to swallow, In the case of roof drains, the water will either be selected to be relatively small, without there being a gutter (external drainage) or by the risk of water eddies forming in the downpipe in the roof surface. In addition, of course, the permulde (internal drainage) in an essentially perforated wall serves as a sieve, which prevents the penetration of a vertical downpipe. The inlet dirt into the downpipe prevents
this downpipe can be perforated with a The invention is based on two The dirt trap must be covered. This training 35 in the drawing illustrated embodiments leads to the fact that air together with the rainwater explained in more detail,
water is sucked into the vertical downspout, with Es showing in this, because of the Coriolis forces occurring, FIG. 1 shows a vertical section through the inlet a vortex formation occurs, so that the water in a roof drain, the downpipe essentially only swirled along 40 FIG. 2 the inlet of the roof drain according to FIG. 1 the inner wall of the downpipe flows, whereas in the plan view and the central area of the pipe the flowing through F i g. 3 shows a vertical section through the inlet Absorbs air. Because of this flow prevention another embodiment of a roof drain, At least only a part of the free cross-section of the vertical In the drawing there is an inside of a building Downpipe for transporting the water is shown 45 of the arranged downpipe 1, which is pulled in is, the diameter of the downpipe must be sentlichen vertical. The upper end of the case should be sized relatively large to the pipe 1 is to the bottom of a rectangular water wish Discharge the amount of water per unit of time connected to collecting trough 2 in the middle. The water can collecting trough 2 is arranged in the building roof in this way The invention is based on the object 50 net that the flange that the upper edge 3 of the to eliminate the above-mentioned deficiency and form a water collecting trough 2, flush with the roof-roof drain Od. Like. Of the type specified so surface 4 is located. to design that the swallowing capacity of the fall In the middle of the water collecting trough 2 is a pipe increases wildly. hood-shaped cover 6 arranged, the upper To solve this problem, a roof side is formed by a disk 7, to which one to Course of the type mentioned above according to the invention to the bottom of the water collecting trough 2 itself suggested that wall 8 is set at a distance above the recess. The attachment of the run of the downpipe an uninterrupted disc on the cover 6 is carried out by means of bolts 5 at the bottom of the is arranged, the lower edge of which is under the upper water collecting trough 2. The disc 7 of the cover 6 Edge of the water collection trough is and the larger 60 is continuously formed, while the than the inlet of the downpipe and smaller than the jacket of the cover 6 forming wall 8 with a number of water collecting troughs is. Chen water passage openings 9 is provided. the Of course, the top row of the water passage openings 9 of the invention can not only be used in the case of roof drains of the wall 8 of the cover 6, which are used in the sense of the present invention. Rather, it is possible to provide the lower edge of the disc 7 with an embodiment according to the invention also when the disc 7 is slightly below the level of the disc 7 when it comes to releasing the cover 6 . Figure 1 clearly shows that this achieves the above objective. knife of the disc 7 and thus the diameter of the