EP2098657A2 - Dispositif d'écoulement des eaux d'une toiture - Google Patents

Dispositif d'écoulement des eaux d'une toiture Download PDF

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Publication number
EP2098657A2
EP2098657A2 EP09002953A EP09002953A EP2098657A2 EP 2098657 A2 EP2098657 A2 EP 2098657A2 EP 09002953 A EP09002953 A EP 09002953A EP 09002953 A EP09002953 A EP 09002953A EP 2098657 A2 EP2098657 A2 EP 2098657A2
Authority
EP
European Patent Office
Prior art keywords
emergency
main
roof
drain pipe
brim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09002953A
Other languages
German (de)
English (en)
Other versions
EP2098657B1 (fr
EP2098657A3 (fr
Inventor
Wolfgang Dipl.-Ing. Vahlbrauk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2098657A2 publication Critical patent/EP2098657A2/fr
Publication of EP2098657A3 publication Critical patent/EP2098657A3/fr
Application granted granted Critical
Publication of EP2098657B1 publication Critical patent/EP2098657B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404—Drainage on the roof surface
    • E04D13/0409—Drainage outlets, e.g. gullies
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404—Drainage on the roof surface
    • E04D13/0409—Drainage outlets, e.g. gullies
    • E04D2013/0422—Drainage outlets, e.g. gullies for draining water above the roof level, e.g. gullies with overflow ports
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404—Drainage on the roof surface
    • E04D13/0409—Drainage outlets, e.g. gullies
    • E04D2013/0427—Drainage outlets, e.g. gullies with means for controlling the flow in the outlet

Definitions

  • the invention relates to a roof drainage device for draining water from a roof, comprising (a) a main inlet for a main drain into a main drain pipe having a mouth and (b) an inlet for draining water above a predetermined emergency drain above the mouth by means of pressure flow in an emergency drain pipe whose free cross-section is smaller than that of the main drain pipe and which extends at least over part of its length within the cross section of the main drain pipe.
  • Such a roof drainage device is known from DE 10 2005 012 439 and the DE 10 2005 012 438 known.
  • a disadvantage of such roof drainage devices is that the main drain pipe must be easily soiled and often cleaned, if the full drainage performance is to be maintained.
  • the invention has for its object to provide a roof drainage device, which has a lower risk of clogging.
  • the invention solves the problem by a generic roof drainage device according to claim 1.
  • This roof drainage device is that the water when it is approximately at the height of the emergency drainage height on the roof, forms a pressure flow in the main drain pipe. This creates a high flow velocity, which entrains any dirt. If the main drainpipe becomes dirty, the water also rises higher on the roof on average, which increases the likelihood that a pressure flow will develop. In other words, there is a negative feedback in which occurs when contamination of the main drain pipe rather a cleaning. This gives a substantially maintenance-free roof drainage device.
  • the brim By the brim it is achieved that at a water level which corresponds approximately to the Notablaufière, also forms a pressure flow in the main drain pipe, which significantly increases the discharge capacity of the main drain pipe. As a result, the total dissipation of the roof drainage device increases.
  • the brim is thus arranged so that, when water is present above the Notablaufière, forms a pressure flow in the main drain pipe. This means that a water column substantially free of large air bubbles forms in the main drain pipe, so that a negative pressure is applied below the brim.
  • the cross section of the brim is at least as large as the mouth opening, it is to be understood in particular that the brim completely covers the mouth opening. If, for example, the brim and the mouth opening are both bounded in a circular manner and arranged concentrically one above the other, the rim diameter is at least as large as the mouth diameter.
  • the main inlet device has a main inlet surface, which passes through an inlet opening boundary in the mouth opening of the main drain pipe, wherein the brim in vertical projection completely spans the inlet opening boundary.
  • Under the inlet opening boundary is understood in particular the transition from the horizontally extending main inlet surface to the inclined to the horizontal main drain pipe.
  • the vertical projection of the brim encloses the mouth opening, more specifically the mouth opening boundary.
  • the main drain pipe merges upward from a cylinder jacket-shaped pipe section into a truncated cone-like widened pipe section whose upper end forms the mouth opening.
  • a main drain pipe cross-sectional area of the main drain pipe is larger than an emergency drain cross-sectional area of the emergency drain pipe.
  • the main drain pipe cross-sectional area is at least twice as large as the emergency drain pipe cross-sectional area.
  • the brim forms an emergency inlet surface of the emergency inlet device, which terminates flush with the emergency drainage pipe.
  • the brim has two functions that complement each other.
  • the emergency inlet device comprises an airtight lid which forms a downwardly open and otherwise airtight cavity and is disposed above the rim, the lid having a lid diameter smaller than a brim diameter of the rim.
  • the diameter of the mouth opening is smaller than the lid diameter and this in turn smaller than the rim diameter. It thus results in a particularly compact roof drainage device, which has a particularly low noise level at all possible water heights.
  • the brim in the installation position of the roof drainage device is substantially horizontal.
  • the brim does not have to be horizontal in the strict mathematical sense, but small deviations of, for example, less than 5 ° are tolerable.
  • the brim can have the shape of a flat disc. In this way, noises are suppressed particularly effectively.
  • the brim can also be convex and thus form a downwardly open, airtight cavity.
  • the brim is substantially circularly bounded and has a diameter which is at least twice the diameter of the main drainage pipe. As a result, a formation of a pressure flow is effectively promoted.
  • a particularly easy to produce roof drainage device results when the emergency drain pipe is cylindrical.
  • a further advantage is that a cylindrical emergency drainage pipe builds up a pressure flow particularly effectively, so that dewatering of the roof is always possible in an efficient manner.
  • the roof drainage device has at least one outer guide element for reducing or suppressing a radial flow in water entering the main inlet device and / or the emergency inlet device.
  • the roof drainage device has at least one outer guide element for reducing or suppressing a radial flow in water entering the main inlet device and / or the emergency inlet device.
  • two, three or a plurality of guide elements can be provided, which are preferably arranged in the same angular increments.
  • the guide elements may be baffles, for example.
  • the brim has a radially outer, in the installed position substantially horizontally extending outer portion and a radially inwardly on the outer portion attached, the outer portion angled extending inner portion.
  • a pressure flow in the main drain pipe is formed very quickly.
  • the inner section has a widening section which essentially adjoins the emergency drain pipe and which extends substantially horizontally in the installed position, and a vertical section which adjoins the widening section and which extends substantially vertically in the installed position.
  • the emergency inlet device comprises an airtight lid, which is arranged below the brim and has a lid diameter which is greater than the rim diameter of the brim.
  • the roof drainage device comprises a dirt retaining device, which is designed so that both such coarse dirt contained in the water, which runs in the main drain pipe, as well as such coarse dirt is contained, which is contained in water, which in the emergency drain pipe is running.
  • the dirt retention device is designed to retain coarse dirt from all water, which enters one of the two processes. It may be, for example, a grid or a rake. The advantage of this is that when a pressure flow forms in the main drain pipe, the dirt retention device is cleaned. Separate cleaning of the dirt retention device is therefore largely unnecessary.
  • Coarse dirt is understood as meaning, for example, leaves and other leaf parts.
  • the roof drainage device in the lid elongated slots whose height is smaller than the width thereof.
  • This has the advantage that on the one hand, only a small resistance is opposed to the inflowing water, on the other hand, a pressure flow is formed particularly quickly. If the water rises to a level above an upper edge of the slits, only water flows into the area under the lid. Any remaining air is entrained by the water flow and a negative pressure forms under the lid, which increases the flow of water into the lid ,
  • FIG. 1 shows a roof drainage apparatus 10 for discharging water from a roof 12 having a main inlet 14 and an emergency inlet 16.
  • the main inlet device 14 comprises a main drain pipe 18, which has a cylinder jacket-shaped pipe section 20.
  • the cylinder-jacket-shaped pipe section 20 merges in an orifice section 22 into an orifice 24, which has a mouth opening diameter D M ( FIG. 2 ).
  • the mouth portion 22 merges in a circular mouth opening boundary into a horizontally extending main inlet surface 30.
  • the emergency inlet device 16 is designed to divert water over an emergency drainage height H N and comprises an emergency drainage pipe 26 which has a diameter D N.
  • the emergency drain pipe diameter D N is smaller than a main drain pipe diameter D F (see. FIG. 2 ).
  • the main inlet device 14 comprises a horizontally extending rim 28 having a rim diameter D K which is larger than the mouth opening diameter D M.
  • the brim 28 is disposed to the main run-in surface 30 such that when the main run-in surface 30 is located at the level of a roof seal 32, the brim 38 lies exactly at the emergency drain height H N.
  • the brim 28 runs flat and at a right angle to the emergency discharge pipe 26 and thus forms an emergency inlet surface of the emergency inlet device 16.
  • the brim 28 causes a pressure flow to form in the main inlet device 14 when water above a pressure flow level H D is pending.
  • the brim 28 is designed, for example, such that the pressure flow height H D is below the emergency drain height H N.
  • FIG. 2 shows that the emergency inlet device 16 also comprises a lid 34 which has a substantially cylindrical shape, a lid diameter D D and is concentric with the main drain pipe 18 and the emergency drain pipe 26 is arranged.
  • the lid 34 has a lid rim 36 which extends horizontally and terminates at a height H D which is greater than the emergency drain height H N. Water, which is higher than the emergency drainage height H N , but below the lid rim height H D , runs in the main sequence on the emergency inlet surface in the emergency drain pipe 26. By the brim 28, the pressure flow in the main drain pipe 18 is stabilized.
  • equidistant dirt retaining discs 40a, 40b and 40c are arranged, the outer diameter of which correspond to the rim diameter D K , but which have an inner diameter D i , which is greater than the mouth opening diameter D N.
  • the dirt retaining discs 40 prevent leaves from entering the main drainpipe 18.
  • the roof drainage device 10 is fastened to the roof 12 by fastening means 42a, 42b, 42c.
  • the lid 34 is attached via three webs 44, of which in FIG. 2 only one footbridge is visible.
  • both the main drain pipe 18 and the emergency drain pipe 26 open into a respective branch pipe after a branch point, the two pipes thus produced having the same diameter.
  • FIG. 3 shows a preferred embodiment of a roof drainage device according to the invention, in which the lid 34 is formed as a flat disc.
  • FIG. 4 shows a head portion of the preferred embodiment of the roof drainage device according to FIG. 3 , It can be seen that the cover 34 is formed by an example, 2 mm thick disc having a cover diameter D D and spans all other components of the roof drainage device 10.
  • the brim 28 has a radially outer, in the installed position substantially horizontally extending outer portion 46 and a radially inwardly on the outer portion 46 attaching to the outer portion angled extending inner portion 48.
  • the inner section 48 has a widening section 50 which attaches to the emergency drainage pipe 26 and which essentially runs horizontally in the installed position, and a vertical section 52 which adjoins this widening section 50 and is shown in the final figure 2 substantially vertically.
  • the brim 28 configured radially trough-shaped inside, the emergency drain pipe 26 attaches to a trough bottom.
  • the outer portion 46 is substantially horizontal, it should be understood that it is possible, but not necessary, for the outer portion to be horizontal in the strict sense. Rather, it is possible that the outer portion 46 forms a small angle with the horizontal of, for example, less than 5 °.
  • the inner portion 48 does not necessarily have to be vertical. By the feature that the inner portion 48 extends at an angle to the outer portion 46, it is to be understood in particular that both have an angle of, for example, more than 30 ° with each other. It is also possible that the brim changes in diameter trumpet funnel shape continuously. At the brim 28 guide elements 54.1, ... are arranged, of which in FIG. 4 only the guide element 54.1 can be seen.
  • FIG. 5 shows a perspective view of the rim 28 with the guide elements 54.1, ..., 54.6, which are fastened in equidistant angular steps to the rim 28 and extend radially outward.
  • the guide elements 54 have a height that is smaller by a small amount than a distance between an upper side of the outer portion 46 and the main inlet surface 30 (see FIG. FIG. 4 ).
  • the vanes 54 prevent flow of water in a circumferential direction about the emergency drain pipe 26.
  • FIG. 6 shows a cross section through the brim 28th
  • FIG. 7 shows an embodiment in which the lid diameter D D of the lid 34 corresponds to the rim diameter D K. In this way, a compact roof drainage device is obtained in which the pressure flow in both the main inlet device 14 and in the emergency inlet device 16 jump quickly.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Tents Or Canopies (AREA)
EP20090002953 2008-03-03 2009-03-02 Dispositif d'écoulement des eaux d'une toiture Active EP2098657B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008012440A DE102008012440A1 (de) 2008-03-03 2008-03-03 Dachentwässerungsvorrichtung

Publications (3)

Publication Number Publication Date
EP2098657A2 true EP2098657A2 (fr) 2009-09-09
EP2098657A3 EP2098657A3 (fr) 2013-03-20
EP2098657B1 EP2098657B1 (fr) 2014-06-04

Family

ID=40436345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090002953 Active EP2098657B1 (fr) 2008-03-03 2009-03-02 Dispositif d'écoulement des eaux d'une toiture

Country Status (2)

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EP (1) EP2098657B1 (fr)
DE (1) DE102008012440A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ306460B6 (cs) * 2015-08-05 2017-02-01 Topwet S.R.O. Sestava a systém pro odvod vody z horizontálních nebo šikmých povrchů, zejména střešních povrchů, z prostoru nad pojistnou hydroizolací

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105525646B (zh) * 2016-01-29 2017-11-14 济南轨道交通集团有限公司 高架路面雨水口收集雨水装置及收集利用雨水的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10201347A1 (de) 2002-01-16 2003-07-31 Dallmer Gmbh & Co Kg Einlaufvorrichtung für die Abführung von Regenwasser von einem Dach
DE102005012439A1 (de) 2005-03-11 2006-09-14 Vahlbrauk, Wolfgang, Dipl.-Ing. Wasserabführvorrichtung
DE102005012438A1 (de) 2005-03-11 2006-09-14 Vahlbrauk, Wolfgang, Dipl.-Ing. Wasserabführvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1013843T3 (da) * 1998-12-24 2003-12-01 Wolfgang Dipl-Ing Vahlbrauk Gravitationsvandafløb
DE102004024904A1 (de) * 2004-05-19 2005-12-15 Wavin B.V. Wasserablauf für versiegelte ebene Flächen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10201347A1 (de) 2002-01-16 2003-07-31 Dallmer Gmbh & Co Kg Einlaufvorrichtung für die Abführung von Regenwasser von einem Dach
DE102005012439A1 (de) 2005-03-11 2006-09-14 Vahlbrauk, Wolfgang, Dipl.-Ing. Wasserabführvorrichtung
DE102005012438A1 (de) 2005-03-11 2006-09-14 Vahlbrauk, Wolfgang, Dipl.-Ing. Wasserabführvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ306460B6 (cs) * 2015-08-05 2017-02-01 Topwet S.R.O. Sestava a systém pro odvod vody z horizontálních nebo šikmých povrchů, zejména střešních povrchů, z prostoru nad pojistnou hydroizolací

Also Published As

Publication number Publication date
DE102008012440A1 (de) 2009-09-17
EP2098657B1 (fr) 2014-06-04
EP2098657A3 (fr) 2013-03-20

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