EP1865121A2 - Verbindungsstück für ein Siphon-System - Google Patents

Verbindungsstück für ein Siphon-System Download PDF

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Publication number
EP1865121A2
EP1865121A2 EP07445022A EP07445022A EP1865121A2 EP 1865121 A2 EP1865121 A2 EP 1865121A2 EP 07445022 A EP07445022 A EP 07445022A EP 07445022 A EP07445022 A EP 07445022A EP 1865121 A2 EP1865121 A2 EP 1865121A2
Authority
EP
European Patent Office
Prior art keywords
interface portion
siphonic
outlet
interface
discharge end
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
EP07445022A
Other languages
English (en)
French (fr)
Other versions
EP1865121A3 (de
EP1865121B1 (de
Inventor
Per Sommerhein
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.)
Per Sommerhein AB
Original Assignee
Per Sommerhein AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Per Sommerhein AB filed Critical Per Sommerhein AB
Priority to PL07445022T priority Critical patent/PL1865121T3/pl
Publication of EP1865121A2 publication Critical patent/EP1865121A2/de
Publication of EP1865121A3 publication Critical patent/EP1865121A3/de
Application granted granted Critical
Publication of EP1865121B1 publication Critical patent/EP1865121B1/de
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
    • E04D2013/0427—Drainage outlets, e.g. gullies with means for controlling the flow in the outlet
    • 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
    • E04D2013/0436—Drainage outlets, e.g. gullies with sealing means

Definitions

  • the present invention concerns siphonic systems and in particular it concerns an interface portion according to the preamble of claim 1.
  • siphonic drainage systems full bore flow pipe systems
  • siphonic action commences immediately at the point in time when dimensional rainfalls occur.
  • priming starts, subatmospheric pressures appear in the pipe system and the drainage capacity increases dramatically.
  • Such systems are useful for instance for the drainage of roofs of buildings.
  • Figure 1 shows schematically a known part of a siphonic drainage system. It includes a roof outlet 4 and pipes 23 connected to a horizontal collecting pipe 12, these pipes 23 are described as tailpipes 23.
  • tailpipes 23 In the initial drainage process, correctly designed tailpipes 23 and their connected roof outlets 4 serve as small siphonic systems, capable of quickly filling up the collecting pipe 12 and downpipe (not shown) with rainwater. Hence, the total siphonic system will prime fast.
  • a main object is consequently to solve the problem of reliably and more quickly prime a siphonic system.
  • the invention stems from the insight that transitions in a siphonic system, such as vertical pipe work of different diameters or vertical pipe work with constrictions, may act as traps of a gas, such as air.
  • a gas such as air.
  • the entrapment of gas prevents siphonic action and prolongs the process of filling the system with liquid (priming).
  • the invention provides an interface portion with an inner cross section area that increases continuously from the inlet end to the discharge end for a length of the interface portion that is at least 0.3 times the inner diameter of the discharge end. Due to this continuous increase during the specified length, gas is effectively prevented from being trapped downstream of the upstream portion. Thus, the interface portion of the invention promotes a faster priming of the siphonic system.
  • a transition between the inlet end and the upstream portion is essentially in the form of a curve with a radius of at least 0.15 times the inner diameter of the discharge end.
  • the liquid passing the transition can be made to more efficiently follow, at least partly, the interface portion.
  • the patent US 5 522 197 describes a throttling device for a roof outlet of a siphonic drainage system, said system comprising multiple roof outlets joined to the same tube system. It solves the problem of providing separate roof outlet branches with correct flow resistances.
  • the device consists of a deformable annular element that is arranged in an outlet passage and that can be deformed to a varying degree, in order to throttle the passage to a corresponding degree.
  • a part of the throttling device may accidentally resemble the interface portion of the present application to the extent of having a portion with an inner cross section area that increases continuously.
  • the length of the portion of the throttling device that has this increase is too short in order to attain the priming action of the interface portion of the present application and the transition radiuses are non-existent.
  • the patent US 5 522 197 only address the problem of flow resistances and does not in any way, implicitly or explicitly, discuss the present problem of priming a siphonic system and there are no pointers to this problem or the solution according to the present invention at all.
  • Fig. 2 illustrates a cause to the problem of slow priming of certain siphonic systems.
  • a siphonic drainage system 6 is shown.
  • the system 6 includes a roof outlet 4, having an outlet spigot 13, and a tailpipe 23 of larger diameter than the outlet spigot 13.
  • rainwater 14 is collected in the outlet bowl 15 of the roof outlet 4. The water flows down through the outlet spigot 13 and in to the tailpipe 23.
  • the tailpipe 23 in this case has a larger diameter than the outlet spigot 13 and the connector connecting them has an abrupt change in diameter, the water forms a jet 16 that has a smaller diameter than the tailpipe 23. This leads to air 17 being trapped inside the tailpipe 23. Because of this air, the system will not work siphonically. Instead, the system works purely by gravity and therefore has a considerably lower water transport capacity. In order for the siphonic action to start, the tailpipe 23 must (gravitationally) be filled up with water up to the outlet spigot 13, evacuating all air. This filling will be slow and sometimes does not take place at all, even after a substantial time.
  • a constricted connector 18 of prior art is shown in fig. 3. Its function is to connect a tailpipe 23 directly to an outlet bottom 9 of the drainage system, with no spigot in between.
  • the constriction 19 is in this case necessary in order to adapt the opening 7 in the outlet bowl 15 to the air baffle 20. If the opening 7 becomes too large in respect of the size of the air baffle 20 above, the function of the baffle 20, to only allow water into the drainage system, may be compromised. This is due to that air may constantly be drawn into the pipe system at the side of the air baffle 20, and full bore flow will never be obtained at tolerable water depths on the roof.
  • the tailpipes 23 in figures 6 and 8 if connected directly to the outlet bowl 15 or baseplate, would possibly create this situation.
  • the constriction 19 in fig. 3 remedies this, but unfortunately, because of the abrupt transition from a small cross section area to a large cross section area, the problem described in the previous paragraph may occur.
  • a new transition interface portion 1 design is suggested.
  • a siphonic drainage system 6 is depicted in Figure 4.
  • This siphonic drainage system includes a roof outlet 4, having an outlet spigot 13.
  • the spigot 13 is connected to a connector 5, which in turn is connected to a tailpipe 23.
  • the direction of water flowing is downwards in the figure; from the roof outlet 4 through the spigot 13, then through the connector 5 and in to the tailpipe 23.
  • the inventive interface portion 1 is in this figure, as an example, contained in the connector 5.
  • the siphonic system is said to have an upstream portion 2 and a downstream portion 3.
  • the upstream portion 2 corresponds to the outlet spigot 13 and the downstream portion 3 corresponds to the lower part of the connector 5.
  • the interface portion 1 extends between an inlet end 10 and a discharge end 11.
  • the inlet end 10 is to be in connection with the upstream portion 2
  • the discharge end 11 is to be in connection with the downstream portion 3.
  • the interface portion 1 is arranged to bring, in use, the upstream portion 2 in liquid connection with the downstream portion 3.
  • the inner cross section area of the interface portion 1 increases continuously from the inlet end 10 to the discharge end 11 for a length L of the interface portion 1 that is at least 0.3 times the inner diameter D of the discharge end 11 (see fig. 5).
  • the interface portion counteracts an accumulation of a gas downstream of the upstream portion 2, that is in the interface portion 1 and downstream of the interface portion 1.
  • the water instead of forming a jet as in fig. 2, at least partly follows the wall of the interface portion 1.
  • the water may form a kind of a lid that traps the air in the interface portion 1 and/or the downstream portion 3 and pushes the air out of the system 6, thus facilitating priming of the system 6.
  • the idea of the interface portion is to replace abrupt transition portions in siphonic systems.
  • the interface portion enables at least some of the liquid in the siphonic system to follow the wall of the interface portion.
  • abrupt portions which could be replaced by the interface portion, are a change from a small to a large diameter pipe or a constriction in a pipe, as exemplified above.
  • a transition from the interface portion 1 to the upstream portion 2 and/or the downstream portion 3 of the siphonic system should preferably be smooth and could advantageously be essentially in the form of a curve with a radius R of at least 0.15 times the inner diameter D of the discharge end 11, see for instance fig. 5.
  • the interface portion can be provided in several ways. For instance it can be provided as an integral part of a building block of a siphonic system, such as an integral part of a roof outlet, a pipe or a connector. In fig. 10, the interface portion 1 is provided as an integral part of a roof outlet 4. Examples of connectors are given in figs. 4 through 8. It could also be provided as a sleeve insert 24 for a building block of a siphonic system, such as a pipe. An example of such a sleeve insert 24, inserted into a pipe, is depicted in fig. 9. An example of an interface portion 1 integral with a pipe is given in fig. 11.
  • connection to connect the building block, including the interface portion, to other building blocks of the siphonic system include threads 25, flanges 8 and other conventional connection means. Examples of threads 25 and flanges 8 can for instance be found in figs. 5 and 6. Connection by welding would of course also be possible.
  • the upstream portion of the siphonic drainage system could be a part of a roof outlet, such as an outlet spigot 13 or an outlet bottom 9.
  • a part could be studied in for example figs. 4 and 6.
  • For an outlet bottom it is possible to adapt the inlet end either to be connected to the outside or to the inside of the outlet bottom.
  • Such outlet bottoms 9 and inlet ends 10 are depicted in figs. 6 and 8.
  • Figs. 7a and 7b are close-ups in different views of fig. 6.
  • the discharge end 11 is similarly adapted to be connected to a downstream portion 3 being part of a tailpipe of a siphonic drainage system.
  • the length L of the interface portion 1 should, as has been mentioned, be at least 0.3 times the inner diameter D of the discharge end 11 for a beneficial priming effect beginning to occur.
  • An increase of said length L from between 0.3 to 0.5 times said inner diameter D yields an increased priming effect.
  • an even stronger priming effect can be observed, if the length L of the interface portion 1 is at least 0.5 times the inner diameter D of the discharge end 11.
  • the material in the building blocks containing the interface portions are chosen to match the material of other building blocks to which the interface portion building block is to be connected. For example, welding or solvent welding of plastic materials, mechanical couplings, or welding of steel and other metals may be used for achieving a connection.
  • the wall of the interface portion 1 can be designed to be more or less smooth, the main requirement being that the water should be led to at least partly follow the same.
  • cross sections of the pipe work of the siphonic systems are circular.
  • Other cross sections such as for instance quadratic, rectangular or elliptic are also applicable.
  • interface portion of the invention is particularly useful in siphonic roof drainage pipe systems, it may of course also be utilised in any siphonic pipe system where transitions between different diameters have to be performed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP07445022.2A 2006-05-31 2007-05-11 Entwässerungsanlage mit Druckströmung Active EP1865121B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07445022T PL1865121T3 (pl) 2006-05-31 2007-05-11 Syfonowy system odwadniający

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0601202A SE529951C2 (sv) 2006-05-31 2006-05-31 Gränssnittsparti för ett sifoniskt system

Publications (3)

Publication Number Publication Date
EP1865121A2 true EP1865121A2 (de) 2007-12-12
EP1865121A3 EP1865121A3 (de) 2011-03-02
EP1865121B1 EP1865121B1 (de) 2013-10-02

Family

ID=38370388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07445022.2A Active EP1865121B1 (de) 2006-05-31 2007-05-11 Entwässerungsanlage mit Druckströmung

Country Status (4)

Country Link
US (1) US20070277447A1 (de)
EP (1) EP1865121B1 (de)
PL (1) PL1865121T3 (de)
SE (1) SE529951C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1019528A5 (nl) * 2010-10-05 2012-08-07 Aquadraat Engineering Bvba Dal en werkwijze voor het vervaardigen van een dal en hemelwaterafvoersysteem voorzien van zulke dal.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5828066B2 (ja) * 2010-12-21 2015-12-02 パナソニックＩｐマネジメント株式会社 雨樋構造
FR3121461B1 (fr) * 2021-04-06 2023-08-04 Rikksen Dispositif de drainage équipé d’un manchon de fixation pour construction, notamment un toit de bâtiment ou une terrasse
JP2023096781A (ja) * 2021-12-27 2023-07-07 パナソニックＩｐマネジメント株式会社 配管部材、及び、雨樋システム
JP2023109014A (ja) * 2022-01-26 2023-08-07 パナソニックＩｐマネジメント株式会社 配管部材、及び、雨樋システム

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
US925946A (en) * 1909-06-22 Soil-pipe flashing
US1756045A (en) * 1926-12-04 1930-04-29 Wilhelmi Valentin Boiler connection
US2347044A (en) * 1941-10-10 1944-04-18 Joseph E Frances Pipe bell hub and sealing means
US2322587A (en) * 1942-07-21 1943-06-22 Thomas F Payne Pipe joint
US3727953A (en) * 1969-02-05 1973-04-17 Advanced Drainage Syst Inc Tube coupling
DE2226508B2 (de) * 1972-05-31 1978-08-03 Karl 6460 Gelnhausen Kuhn Schnellverbinder aus Elastomere, insbesondere zum Anschluß von Spülrohren von WC-Becken
US3909045A (en) * 1974-10-10 1975-09-30 Gen Electric Tubing joint for adhesive bonding
US4120083A (en) * 1976-12-06 1978-10-17 Zap-Lok Systems International, Inc. Method of pipe joining
EP0141675B1 (de) * 1983-11-08 1988-05-04 Raychem Limited Vorrichtung und Verfahren zum Verbinden langgestreckter Gegenstände
DE4203329A1 (de) * 1991-06-15 1993-08-12 Krupp Vdm Gmbh Gasdichte verbindung zwischen rohren kleinen durchmessers
SE469089B (sv) * 1991-06-24 1993-05-10 Stacke Metallarmatur Ab Foerminskningsanordning foer roerkopplingar
FI88328C (fi) * 1991-10-14 1993-04-26 Megsent Insinoeoeritoimisto Foerfarande vid en avvattningsanordning foer tak och en avvattningsanordning
US5211221A (en) * 1991-11-26 1993-05-18 Mccord Heat Transfer Method and apparatus for joining coolant tubes of a heat exchanger
US5511831A (en) * 1993-01-04 1996-04-30 Modine Manufacturing Company Self-centering, self-seating, double-sealing, interference fit tube joint
US6318397B1 (en) * 1999-08-04 2001-11-20 Donald G. Huber Side port floor drain
US6548760B1 (en) * 2000-12-11 2003-04-15 Eastern Sheet Metal, Inc. One-piece seamless reducer
EP1247910B1 (de) * 2001-04-06 2009-04-08 Geberit Technik Ag Geruchsverschluss für ein wasserloses Urinal
CN2668972Y (zh) * 2003-09-02 2005-01-05 上海中英阀门管件有限公司 异径接头
TWM271973U (en) * 2004-12-24 2005-08-01 Ching-Wen Chen Improved connection structure of a metal connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1019528A5 (nl) * 2010-10-05 2012-08-07 Aquadraat Engineering Bvba Dal en werkwijze voor het vervaardigen van een dal en hemelwaterafvoersysteem voorzien van zulke dal.

Also Published As

Publication number Publication date
EP1865121A3 (de) 2011-03-02
EP1865121B1 (de) 2013-10-02
PL1865121T3 (pl) 2014-03-31
US20070277447A1 (en) 2007-12-06
SE529951C2 (sv) 2008-01-15
SE0601202L (sv) 2007-12-01

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