EP1882786B1 - Pipe elbow for a sanitary conduit - Google Patents

Pipe elbow for a sanitary conduit Download PDF

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Publication number
EP1882786B1
EP1882786B1 EP06405322A EP06405322A EP1882786B1 EP 1882786 B1 EP1882786 B1 EP 1882786B1 EP 06405322 A EP06405322 A EP 06405322A EP 06405322 A EP06405322 A EP 06405322A EP 1882786 B1 EP1882786 B1 EP 1882786B1
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EP
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Prior art keywords
flow
flow divider
bend according
deflecting
deflecting bend
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EP06405322A
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German (de)
French (fr)
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EP1882786A1 (en
Inventor
Abdullah Oengören
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Geberit Technik AG
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Geberit Technik AG
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Priority to AT06405322T priority Critical patent/ATE430847T1/en
Priority to DE502006003668T priority patent/DE502006003668D1/en
Priority to EP06405322A priority patent/EP1882786B1/en
Publication of EP1882786A1 publication Critical patent/EP1882786A1/en
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Publication of EP1882786B1 publication Critical patent/EP1882786B1/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C2001/1206—Pipes with specific features for influencing flow characteristics

Definitions

  • the invention relates to a deflection bend for a downpipe according to the preamble of claim 1.
  • Such deflector are also called elbows and serve mainly to dissipate in multi-storey buildings, the wastewater of sanitary appliances, such as sinks, toilets and the like.
  • the siphons of these apparatuses are emptied, a two-phase flow of water and air is formed. It has long been known that the flow guidance in such downpipes and in particular in the deflection arc is not optimal. It may come in the downpipe in particular to form a negative pressure or an overpressure and vibrations. There are already several proposals in the prior art to improve the flow guidance.
  • an air separator for water and sewage pipes is proposed.
  • an organ is arranged, which is intended to deflect the water entering and braking in such a way that entrained air separates out and flows away through a breather.
  • This organ is intended to produce a rotational movement in the jet, which is intended to promote the venting.
  • the Strahlablenkorgan deflects the incoming water jet for the purpose of braking and venting.
  • the nozzle requires a connection for an air outlet line.
  • the CH 533 793 A discloses a branch piece for drain lines, which has a shunt connection in the region of lateral connections.
  • a fall brake for drainage water in a vertical wiring harness is proposed.
  • the fall brake With the fall brake, a strong turbulence is to be generated, which largely destroys the kinetic energy of the water, so that the Flow rate of the water immediately below the fall brake is much smaller than immediately above it.
  • the fall brake is formed by a deflection rib, which is directed obliquely downwards.
  • a fall brake or reduction of the energy of the flow is disadvantageous because residues in the pipeline can be washed away less effectively.
  • a deflection arc has become known which has deflection means on the inside of the substantially vertical region of the deflection arc, which generate a spiral-shaped and laminar filament flow. After a friction surface, which is to reduce the speed down, a flow conductor is arranged, which is to break the film flow and thereby allow pressure equalization.
  • the invention has for its object to provide a deflection arc of the type mentioned, which ensures an improved flow guidance and the flow loses as little energy as possible, so that residues in the pipeline can be effectively washed away.
  • a deflection arc according to claim 1.
  • a flow divider is arranged; which ruptures a film flow of the water and thereby allows pressure equalization in the flow.
  • the invention is based on the finding that in a downpipe, the water flows as a film flow on the inside of the line down and that in the arcuate region of this film flow forms a kind of curtain, which prevents the air at the outlet.
  • this film flow is torn immediately above the sheet, so that an opening forms in this film flow, through which a pressure equalization is possible. This also prevents a noise-generating vibration of the air.
  • the energy loss at this flow divider is comparatively small, so that residues in the pipeline can be effectively flushed away.
  • the inventive deflection arc is suitable for bends of 90 ° but also for elbows with a smaller deflection, for example of 88.5 °. It is also suitable for different downpipes, for example, for different diameters and heights and in particular for multi-storey buildings. Experiments have shown that usually a complete pressure equalization can be achieved.
  • the invention has the further advantage that the power of the downpipe can be increased because the load is smaller.
  • the flow divider is arranged above the arcuate region.
  • the opening formed by the flow divider then preferably extends in the region of the arc or the curvature.
  • the cylindrical film flow then passes into a channel flow after the exit, the water then runs after the exit similar to a channel at the bottom of the pipe.
  • the flow divider is arranged on the said inner side on the side of the exit. This results in a particularly suitable flow guidance.
  • the flow divider extends in the direction of flow at least over one half of the inside.
  • the flow guidance can be further improved. It can be avoided in particular that the film flow closes after the flow divider again.
  • the cylindrical film flow is thereby converted into a channel flow, which runs in the lower region of the outlet opening and correspondingly at the bottom of a connected tube.
  • a further improvement in the course of the flow is achieved when the flow divider has essentially the shape of an inverted V or the upper edge has a miter.
  • the flow divider is formed on the inside of the vertically extending region.
  • the flow divider can also be produced separately and, for example, welded on.
  • the flow divider has an upper comparatively sharp edge, from which V-shaped two arms extend downwards.
  • the opening angle of these two arms is preferably in the range of 50-70 °, more preferably between 55 and 65 ° and is still preferably about 60 °. This results in a particularly efficient formation of an opening in the film flow.
  • Said two arms have a cross-sectional area preferably less than 3 cm 2 , preferably less than 2 cm 2 and in particular a cross-sectional area of about 1 cm 2 .
  • the cross section may be rectangular, but also have another suitable shape.
  • deflecting 1 forms a lower portion of a downpipe, not shown here, which is connected to one or more sanitary apparatus, each having a siphon.
  • the deflecting sheet 1 can be installed for example by mirror welding or with suitable sleeves in the downpipe.
  • the water to be discharged flows according to FIG. 1 in the direction of the arrow 6 in a continuous channel K and leaves the deflection arc 1 in the direction of the arrow 7 substantially horizontally through an outlet opening 2.
  • a disposal line not shown here is connected. This can also be slightly inclined to the horizontal.
  • the deflection arc 1 has a wall 4 which forms a vertical region 1a and an arcuate region 1b of the deflection arc 1.
  • the cross section is substantially circular.
  • the arcuate portion 1b forms a deflection of 90 ° or even slightly less than 90 °, for example about 88 °.
  • the radius of curvature in the arcuate region 1b can be different and is for example 10 cm.
  • the inner diameter of the channel K is dependent on the required discharge capacity and is for example 10 cm.
  • the wall 4 forms an inner side 3, at which according to the Figures 1 and 2 a flow divider 5 is arranged.
  • This serves to break up a film flow 12 forming in the channel K in front of the arcuate region 1b, in order thereby to prevent the film flow in FIG FIG. 6 shown opening 14 in the film flow 12 to form.
  • the film flow 12 is in the FIGS. 4 and 6 shown schematically. This forms immediately after the inflow of water 11 in the deflection arc 1 or even above this in the down pipe. According to the FIG. 4 the water 11 flows through a nozzle 10 substantially horizontally in the deflection arc. With the water 11 at the same time air 13 flows into the deflection arc 1 and in the down pipe.
  • air 13 Within this Film flow 12 is air 13 which has a lower flow velocity than the water in the film flow 12.
  • the water flows in the direction of the arrow 9 in the channel K and forms the film flow 12 ', which surrounds the air 13'.
  • the arcuate region 1b forms a type of curtain 17, which forms above all with larger thicknesses of the film flow 12'.
  • This curtain 17 acts as a barrier to the passage of air. Since pressure equalization is difficult, a negative pressure can form in the deflection arc 8.
  • In the air 13 'can also build up vibrations that generate noise. The effects are different depending on the type of film flow 12 '.
  • the disturbances in the two-phase flow of water and air are usually considerable. They affect the connected devices. They can also affect the elimination of residues.
  • the film flow 12 meets the flow divider 5, as the FIGS. 4 and 6 demonstrate.
  • the flow divider 5 runs along the inner side 3 and that on the side of the outlet opening 2.
  • the flow divider 5 has an upper radially extending edge 5a, which may be rounded or comparatively sharp. From this edge 5a, two arms 5b extend downwardly in a V-shape. The shape of these arms 5b is similar to the top of a miter.
  • the arms 5b do not run in a plane, but in the surface of a cylinder formed by the inside 3.
  • the arms 5b are according to the FIG. 6 connected above and each have a lower end 5c. Preferably, the arms 5b are symmetrical to the vertical.
  • the opening angle of the arms 5b may be different. Experiments have shown that a particularly favorable flow profile is achieved when this Angle between 50 ° and about 70 °. Preferably, this angle is 55 to 65 °. An optimal flow results in particular at an angle of about 60 °.
  • the radial thickness and also the cross section of the arms 5b may be different. Preferably, this thickness is chosen so that it substantially corresponds to the thickness of the film flow 12. The thickness is for example less than 2 cm and typically about 1 cm. But here are also larger or smaller thicknesses conceivable.
  • the cross-sectional area of the arms 5b is for example about 1 cm 2 and is in particular angular, for example rectangular. The cross-sectional area may be the same over the length of the arms 5b, but it is also conceivable to change this cross-sectional area.
  • the film flow 12 is divided at the edge 5a and the water flows in partial flows respectively on an outer surface 5d (FIG. Fig. 1 ) from this edge 5a to the corresponding end 5c. From the edge 5a tears the film flow 12, wherein the above-mentioned opening 14 is formed. It is essential that this opening 14 does not close again immediately after the flow divider 5, but extends downwards into the arcuate region 1b.
  • the cylindrical film flow 12 is thereby transformed into the in FIG. 4 shown gutter flow 16 um, which runs in the lower region of the outlet opening 2 and corresponding to the bottom of the connected pipe. Above this channel flow 16 is air, which is connected through the opening 14 with the air 13 in the vertical region 1b.
  • the arms 5b are connected as mentioned above and extend downwardly from the edge 5a.
  • the arms 5b extend as if from FIG. 4 apparent to just above the approach of the arcuate portion 1b. They extend in the pipe cross-section seen in the half pipe circumference.
  • This extension can also be slightly exceeded or undershot.
  • the continuous existence of the opening 14 can be ensured particularly effective and also reliably forms the above-mentioned gutter flow 16. Turbulence in the arcuate region 1b and thus pressure fluctuations in the pipe system can thus be effectively avoided. Since such pressure changes or pressure fluctuations, the resilience of the case strand or limit the downpipe, it is possible with the inventive deflection bend 1, to increase the power at the same pipe diameter. Conversely, it is possible to connect the same apparatus to a down pipe with a smaller inner diameter than before.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Safety Valves (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Organic Insulating Materials (AREA)
  • Special Spraying Apparatus (AREA)

Abstract

The elbow (1) has a flow divider (5) arranged at an inner side (3) of a vertical region (1a), and drilling down a film flow of water and enabling pressure balance in the flow. The flow divider is arranged on a side of an outlet, and is extended in a flow direction over a half of the inner side. The flow divider comprises a radial thickness, which suits to a thickness of the film flow and is smaller than 2 centimeters. The divider has an edge (5a), which is extended radially.

Description

Die Erfindung betrifft einen Umlenkbogen für eine Fallleitung nach dem Oberbegriff des Anspruchs 1.The invention relates to a deflection bend for a downpipe according to the preamble of claim 1.

Solche Umlenkbogen werden auch Rohrkrümmer genannt und dienen vor allem dazu, in mehrgeschossigen Gebäuden das Abwasser von sanitären Apparaten, beispielsweise Spülbecken, WCs und dergleichen abzuführen. In der Fallleitung bildet sich beim Entleeren der Siphons dieser Apparate eine Zweiphasenströmung aus Wasser und Luft. Schon lange ist bekannt, dass die Strömungsführung in solchen Fallleitungen und insbesondere im Umlenkbogen nicht optimal ist. Es kann in der Fallleitung insbesondere zur Bildung eines Unterdruckes oder auch eines Überdruckes sowie zu Schwingungen kommen. Es gibt im Stand der Technik bereits mehrere Vorschläge, um die Strömungsführung zu verbessern.Such deflector are also called elbows and serve mainly to dissipate in multi-storey buildings, the wastewater of sanitary appliances, such as sinks, toilets and the like. In the downpipe, when the siphons of these apparatuses are emptied, a two-phase flow of water and air is formed. It has long been known that the flow guidance in such downpipes and in particular in the deflection arc is not optimal. It may come in the downpipe in particular to form a negative pressure or an overpressure and vibrations. There are already several proposals in the prior art to improve the flow guidance.

Durch die CH 388 209 A wird ein Luftabscheider für Wasser- und Abwasserleitungen vorgeschlagen. In einem Stutzen ist hierzu ein Organ angeordnet, das das einschiessende Wasser ablenken und derart bremsen soll, dass sich mitgeführte Luft ausscheidet und durch einen Entlüfungsstutzen wegströmt. Dieses Organ soll eine Drehbewegung im Strahl erzeugen, welche die Entlüftung fördern soll. Das Strahlablenkorgan lenkt den einfallenden Wasserstrahl zum Zweck einer Bremsung und Entlüftung ab. Der Stutzen benötigt einen Anschluss für eine Luftaustrittsleitung.By the CH 388 209 A an air separator for water and sewage pipes is proposed. In a nozzle for this purpose, an organ is arranged, which is intended to deflect the water entering and braking in such a way that entrained air separates out and flows away through a breather. This organ is intended to produce a rotational movement in the jet, which is intended to promote the venting. The Strahlablenkorgan deflects the incoming water jet for the purpose of braking and venting. The nozzle requires a connection for an air outlet line.

Die CH 533 793 A offenbart ein Verzweigungsstück für Ablaufleitungen, das im Bereich von seitlichen Anschlüssen eine Nebenschlussverbindung besitzt.The CH 533 793 A discloses a branch piece for drain lines, which has a shunt connection in the region of lateral connections.

Durch die CH 598 430 A wird eine Fallbremse für Ablaufwasser in einem vertikalen Leitungsstrang vorgeschlagen. Mit der Fallbremse soll eine starke Turbulenz erzeugt werden, welche die kinetische Energie des Wassers weitgehend vernichtet, so dass die Strömungsgeschwindigkeit des Wassers unmittelbar unterhalb der Fallbremse wesentlich kleiner ist als unmittelbar oberhalb derselben. Die Fallbremse wird durch eine Ablenkrippe gebildet, die schräg nach unten gerichtet ist. Eine solche Fallbremse bzw. Verminderung der Energie der Strömung ist jedoch nachteilig, da Rückstände in der Rohrleitung weniger wirksam weggespült werden können.By the CH 598 430 A a fall brake for drainage water in a vertical wiring harness is proposed. With the fall brake, a strong turbulence is to be generated, which largely destroys the kinetic energy of the water, so that the Flow rate of the water immediately below the fall brake is much smaller than immediately above it. The fall brake is formed by a deflection rib, which is directed obliquely downwards. However, such a fall brake or reduction of the energy of the flow is disadvantageous because residues in the pipeline can be washed away less effectively.

Durch die gattungsbildende GB-A-1 220 876 ist ein Umlenkbogen bekannt geworden, der an der Innenseite des im Wesentlichen vertikalen Bereichs des Umlenkbogens Umlenkmittel aufweist, die eine spiralförmige und laminare Filströmung erzeugen. Nach einer Reibungsfläche, welche die Geschwindigkeit nach unten vermindern soll, ist ein Strömungsleiter angeordnet, der die Filmströmung aufreissen und dadurch einen Druckausgleich ermöglichen soll.By the generic GB-A-1 220 876 For example, a deflection arc has become known which has deflection means on the inside of the substantially vertical region of the deflection arc, which generate a spiral-shaped and laminar filament flow. After a friction surface, which is to reduce the speed down, a flow conductor is arranged, which is to break the film flow and thereby allow pressure equalization.

Der Erfindung liegt die Aufgabe zugrunde, einen Umlenkbogen der genannten Art zu schaffen, der eine verbesserte Strömungsführung gewährleistet und die Strömung möglichst wenig Energie verliert, so dass Rückstände in der Rohrleitung wirksam weggespült werden können.The invention has for its object to provide a deflection arc of the type mentioned, which ensures an improved flow guidance and the flow loses as little energy as possible, so that residues in the pipeline can be effectively washed away.

Die Aufgabe ist durch einen Umlenkbogen gemäß Anspruch 1 gelöst. An der Innenseite des im Wesentlichen vertikalen Bereichs ist ein Strömungsteiler angeordnet; der eine Filmströmung des Wassers aufreisst und dadurch in der Strömung einen Druckausgleich ermöglicht. Der Erfindung liegt die Erkenntnis zugrunde, dass in einer Fallleitung das Wasser als Filmströmung an der Innenseite der Leitung nach unten strömt und dass im bogenförmigen Bereich diese Filmströmung eine Art Vorhang bildet, welcher die Luft am Austritt hindert. Mit dem Strömungsteiler gemäss der Erfindung wird diese Filmströmung unmittelbar über dem Bogen aufgerissen, so dass sich in dieser Filmströmung eine Öffnung bildet, durch die ein Druckausgleich möglich ist. Ebenfalls wird dadurch eine geräuschbildende Vibration der Luft verhindert. Der Energieverlust an diesem Strömungsteiler ist vergleichsweise klein, so dass Rückstände in der Rohrleitung wirksam weggespült werden können. Der erfindungsgemässe Umlenkbogen eignet sich für Krümmungen von 90° aber auch für Rohrkrümmer mit einer kleineren Ablenkung, beispielsweise von 88,5°. Er eignet sich auch für unterschiedliche Fallleitungen, beispielsweise für unterschiedliche Durchmesser und Höhen und insbesondere für mehrgeschossige Gebäude. Versuche haben gezeigt, dass meistens ein vollständiger Druckausgleich erreicht werden kann. Die Erfindung hat den weiteren Vorteil, dass die Leistung der Fallleitung erhöht werden kann, da die Belastung kleiner ist.The object is achieved by a deflection arc according to claim 1. On the inside of the substantially vertical region, a flow divider is arranged; which ruptures a film flow of the water and thereby allows pressure equalization in the flow. The invention is based on the finding that in a downpipe, the water flows as a film flow on the inside of the line down and that in the arcuate region of this film flow forms a kind of curtain, which prevents the air at the outlet. With the flow divider according to the invention, this film flow is torn immediately above the sheet, so that an opening forms in this film flow, through which a pressure equalization is possible. This also prevents a noise-generating vibration of the air. The energy loss at this flow divider is comparatively small, so that residues in the pipeline can be effectively flushed away. The inventive deflection arc is suitable for bends of 90 ° but also for elbows with a smaller deflection, for example of 88.5 °. It is also suitable for different downpipes, for example, for different diameters and heights and in particular for multi-storey buildings. Experiments have shown that usually a complete pressure equalization can be achieved. The invention has the further advantage that the power of the downpipe can be increased because the load is smaller.

Nach einer Weiterbildung der Erfindung ist der Strömungsteiler über dem bogenförmigen Bereich angeordnet. Die durch den Strömungsteiler gebildete Öffnung erstreckt sich dann vorzugsweise in den Bereich des Bogens bzw. der Krümmung. Die zylindrische Filmströmung geht dann nach dem Ausgang in eine Rinnenströmung über, das Wasser verläuft dann nach dem Austritt ähnlich wie in einer Rinne am Boden der Leitung.According to a development of the invention, the flow divider is arranged above the arcuate region. The opening formed by the flow divider then preferably extends in the region of the arc or the curvature. The cylindrical film flow then passes into a channel flow after the exit, the water then runs after the exit similar to a channel at the bottom of the pipe.

Nach einer Weiterbildung der Erfindung ist der Strömungsteiler an der genannten Innenseite auf der Seite des Ausgangs angeordnet. Dies ergibt eine besonders geeignete Strömungsführung.According to a development of the invention, the flow divider is arranged on the said inner side on the side of the exit. This results in a particularly suitable flow guidance.

Gemäss der Erfindung erstreckt sich der Strömungsteiler in Strömungsrichtung gesehen wenigstens über eine Hälfte der Innenseite. Dadurch kann die Strömungsführung noch weiter verbessert werden. Es kann dadurch insbesondere vermieden werden, dass sich die Filmströmung nach dem Strömungsteiler wieder schliesst. Die zylindrische Filmströmung wandelt sich dadurch in eine Rinnenströmung um, die im unteren Bereich der Austrittsöffnung und entsprechend am Boden eines angeschlossenen Rohres verläuft.According to the invention, the flow divider extends in the direction of flow at least over one half of the inside. As a result, the flow guidance can be further improved. It can be avoided in particular that the film flow closes after the flow divider again. The cylindrical film flow is thereby converted into a channel flow, which runs in the lower region of the outlet opening and correspondingly at the bottom of a connected tube.

Eine weitere Verbesserung des Strömungsverlaufes wird dann erreicht, wenn der Strömungsteiler im Wesentlichen die Form eines umgekehrten V oder die Oberkante eine Mitra aufweist.A further improvement in the course of the flow is achieved when the flow divider has essentially the shape of an inverted V or the upper edge has a miter.

Eine besonders kostengünstige Herstellung ist dann möglich, wenn gemäss einer Weiterbildung der Erfindung der Strömungsteiler an der Innenseite des vertikal verlaufenden Bereiches angeformt ist. Der Strömungsteiler kann aber auch gemäss einer Weiterbildung der Erfindung separat hergestellt und beispielsweise angeschweisst sein.A particularly cost-effective production is possible if, according to an embodiment of the invention, the flow divider is formed on the inside of the vertically extending region. However, according to a development of the invention, the flow divider can also be produced separately and, for example, welded on.

Nach einer Weiterbildung der Erfindung besitzt der Strömungsteiler eine obere vergleichsweise scharfe Kante, von der aus sich V-förmig zwei Arme nach unten strecken. Der Öffnungswinkel dieser beiden Arme liegt vorzugsweise im Bereich von 50-70°, noch bevorzugter zwischen 55 und 65° und beträgt noch vorzugsweise etwa 60°. Dadurch ergibt sich eine besonders effiziente Bildung einer Öffnung in der Filmströmung.According to a development of the invention, the flow divider has an upper comparatively sharp edge, from which V-shaped two arms extend downwards. The opening angle of these two arms is preferably in the range of 50-70 °, more preferably between 55 and 65 ° and is still preferably about 60 °. This results in a particularly efficient formation of an opening in the film flow.

Die genannten beiden Arme besitzen eine Querschnittsfläche vorzugsweise kleiner als 3 cm2, vorzugsweise kleiner als 2 cm2 und insbesondere eine Querschnittsfläche von etwa 1 cm2. Der Querschnitt kann rechteckig sein, aber auch eine andere geeignete Form aufweisen.Said two arms have a cross-sectional area preferably less than 3 cm 2 , preferably less than 2 cm 2 and in particular a cross-sectional area of about 1 cm 2 . The cross section may be rectangular, but also have another suitable shape.

Weitere vorteilhafte Merkmale ergeben sich aus den abhängigen Patentansprüchen, der nachfolgenden Beschreibung sowie der Zeichnung.Further advantageous features emerge from the dependent claims, the following description and the drawings.

Ein Ausfiihrungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Figur 1
schematisch eine räumliche Ansicht eines erfindungsgemässen Umlenkbogens, wobei aus zeichnerischen Gründen die Wandung als durchsichtig dargestellt ist,
Figur 2
eine weitere Ansicht des erfindungsgemässen Umlenkbogens gemäss Figur 1,
Figur 3
schematisch die Strömung in einem Umlenkbogen nach dem Stand der Technik,
Figur 4
schematisch der Verlauf der Strömung in einem erfindungsgemässen Umlenkbogen,
Figur 5
eine weitere Ansicht eines Umlenkbogens gemäss Figur 3 und
Figur 6
eine weitere Ansicht des erfindungsgemässen Umlenkbogens zur Erläuterung des Strömungsverlaufes.
An embodiment of the invention will be explained below with reference to the drawing. Show it:
FIG. 1
1 is a schematic view of a spatial view of a deflection arc according to the invention, the wall being shown as transparent for reasons of drawing,
FIG. 2
a further view of the invention according to Umlenkbogens FIG. 1 .
FIG. 3
schematically the flow in a deflection bend according to the prior art,
FIG. 4
the course of the flow in a deflection bend according to the invention,
FIG. 5
a further view of a deflection arc according to FIG. 3 and
FIG. 6
a further view of the inventive deflection bend to explain the flow path.

Der in den Figuren 1 und 2 gezeigte Umlenkbogen 1 bildet einen unteren Bereich einer hier nicht gezeigten Fallleitung, die an einem oder mehreren sanitären Apparaten angeschlossen ist, die jeweils einen Siphon besitzen. Der Umlenkbogen 1 kann beispielsweise durch Spiegelschweissen oder mit geeigneten Muffen in die Fallleitung eingebaut werden. Das abzuleitende Wasser strömt gemäss Figur 1 in Richtung des Pfeils 6 in einen durchgehenden Kanal K und verlässt den Umlenkbogen 1 in Richtung des Pfeils 7 im Wesentlichen horizontal durch eine Austrittsöffnung 2. An dieser Austrittsöffnung 2 ist eine hier nicht gezeigte Entsorgungsleitung angeschlossen. Dieses kann auch etwas geneigt zur Horizontalen verlaufen.The in the Figures 1 and 2 shown deflecting 1 forms a lower portion of a downpipe, not shown here, which is connected to one or more sanitary apparatus, each having a siphon. The deflecting sheet 1 can be installed for example by mirror welding or with suitable sleeves in the downpipe. The water to be discharged flows according to FIG. 1 in the direction of the arrow 6 in a continuous channel K and leaves the deflection arc 1 in the direction of the arrow 7 substantially horizontally through an outlet opening 2. At this outlet opening 2, a disposal line, not shown here is connected. This can also be slightly inclined to the horizontal.

Der Umlenkbogen 1 besitzt eine Wandung 4, die einen vertikalen Bereich 1a und einen bogenförmigen Bereich 1b des Umlenkbogens 1 bildet. Im vertikalen Bereich 1a ist der Querschnitt im Wesentlichen kreisrund. Der bogenförmige Bereich 1b bildet eine Umlenkung von 90° oder auch etwas weniger als 90°, beispielsweise etwa 88°. Der Krümmungsradius im bogenförmigen Bereich 1b kann unterschiedlich sein und beträgt beispielsweise 10 cm. Der Innendurchmesser des Kanals K ist abhängig von der erforderlichen Abfuhrleistung und beträgt beispielsweise 10 cm.The deflection arc 1 has a wall 4 which forms a vertical region 1a and an arcuate region 1b of the deflection arc 1. In the vertical region 1a, the cross section is substantially circular. The arcuate portion 1b forms a deflection of 90 ° or even slightly less than 90 °, for example about 88 °. The radius of curvature in the arcuate region 1b can be different and is for example 10 cm. The inner diameter of the channel K is dependent on the required discharge capacity and is for example 10 cm.

Die Wandung 4 bildet eine Innenseite 3, an welcher gemäss den Figuren 1 und 2 ein Strömungsteiler 5 angeordnet ist. Dieser dient dazu, eine sich im Kanal K bildende Filmströmung 12 vor dem bogenförmigen Bereich 1b aufzubrechen, um dadurch die in Figur 6 gezeigte Öffnung 14 in der Filmströmung 12 zu bilden. Die Filmströmung 12 ist in den Figuren 4 und 6 schematisch dargestellt. Diese bildet sich unmittelbar nach dem Einströmen von Wasser 11 in den Umlenkbogen 1 oder auch schon über diesem in der Fallleitung. Gemäss der Figur 4 strömt das Wasser 11 über einen Stutzen 10 im Wesentlichen horizontal in den Umlenkbogen. Mit dem Wasser 11 strömt zugleich Luft 13 in den Umlenkbogen 1 bzw. in die Fallleitung. Im Umlenkbogen 1 bildet sich dadurch eine Zweiphasenströmung aus Wasser und Luft. Das Wasser 11 bildet an der Innenseite 3 die genannte Filmströmung 12, die verglichen mit dem Innendurchmesser des Umlenkbogens 1 eine vergleichsweise geringe Dicke aufweist. Diese beträgt beispielsweise 1 cm. Sie kann aber auch etwas dicker, beispielsweise 2 cm oder auch etwas dünner sein. Innerhalb dieser Filmströmung 12 befindet sich Luft 13, die eine kleinere Strömungsgeschwindigkeit besitzt, als das Wasser in der Filmströmung 12.The wall 4 forms an inner side 3, at which according to the Figures 1 and 2 a flow divider 5 is arranged. This serves to break up a film flow 12 forming in the channel K in front of the arcuate region 1b, in order thereby to prevent the film flow in FIG FIG. 6 shown opening 14 in the film flow 12 to form. The film flow 12 is in the FIGS. 4 and 6 shown schematically. This forms immediately after the inflow of water 11 in the deflection arc 1 or even above this in the down pipe. According to the FIG. 4 the water 11 flows through a nozzle 10 substantially horizontally in the deflection arc. With the water 11 at the same time air 13 flows into the deflection arc 1 and in the down pipe. In the deflection arc 1, this forms a two-phase flow of water and air. The water 11 forms on the inner side 3 the said film flow 12, which has a comparatively small thickness compared with the inner diameter of the deflection arc 1. This is for example 1 cm. But it can also be slightly thicker, for example 2 cm or slightly thinner. Within this Film flow 12 is air 13 which has a lower flow velocity than the water in the film flow 12.

Die Wirkung des Strömungsteilers 5 wird nachfolgend anhand der Figuren 3 bis 6 näher erläutert, wobei die Figuren 3 und 5 jeweils einen Umlenkbogen 8 des Standes der Technik zeigen. Der Umlenkbogen 1 bzw. 8 wird aus zeichnerischen Gründen als durchsichtig angenommen.The effect of the flow divider 5 will be described below with reference to FIGS. 3 to 6 explained in more detail, wherein the Figures 3 and 5 each show a deflection bend 8 of the prior art. The deflecting bend 1 or 8 is assumed to be transparent for reasons of drawing.

Bei dem in Figur 3 gezeigten Umlenkbogen 8 nach dem Stand der Technik strömt das Wasser in Richtung des Pfeils 9 in den Kanal K und bildet die Filmströmung 12', welche die Luft 13' umgibt. Im bogenförmigen Bereich 1b bildet sich aufgrund der Filmströmung 12' eine Art Vorhang 17, der sich vor allem bei grösseren Dicken der Filmströmung 12' bildet. Dieser Vorhang 17 wirkt als Barriere für den Luftdurchgang. Da ein Druckausgleich erschwert ist, kann sich im Umlenkbogen 8 ein Unterdruck bilden. In der Luft 13' können sich zudem Schwingungen aufbauen, die Lärm erzeugen. Die Wirkungen sind je nach Art der Filmströmung 12' unterschiedlich. Diese Filmströmung 12' kann turbulent oder weitgehend laminar und wie erwähnt unterschiedlich dick sein. Die Störungen in der Zweiphasenströmung aus Wasser und Luft sind jedoch meist erheblich. Sie wirken sich auf die angeschlossenen Apparate aus. Sie können zudem das Wegschwemmen von Rückständen beeinträchtigen.At the in FIG. 3 According to the prior art shown deflecting bow 8, the water flows in the direction of the arrow 9 in the channel K and forms the film flow 12 ', which surrounds the air 13'. Due to the film flow 12 ', the arcuate region 1b forms a type of curtain 17, which forms above all with larger thicknesses of the film flow 12'. This curtain 17 acts as a barrier to the passage of air. Since pressure equalization is difficult, a negative pressure can form in the deflection arc 8. In the air 13 'can also build up vibrations that generate noise. The effects are different depending on the type of film flow 12 '. This film flow 12 'can be turbulent or largely laminar and, as mentioned, of different thickness. However, the disturbances in the two-phase flow of water and air are usually considerable. They affect the connected devices. They can also affect the elimination of residues.

Beim erfindungsgemässen Umlenkbogen 1 trifft die Filmströmung 12 auf den Strömungsteiler 5, wie die Figuren 4 und 6 zeigen. Der Strömungsteiler 5 verläuft entlang der Innenseite 3 und zwar auf der Seite der Austrittsöffnung 2. Der Strömungsteiler 5 besitzt eine obere sich radial erstreckende Kante 5a, die abgerundet oder auch vergleichsweise scharf sein kann. Von dieser Kante 5a erstrecken sich V-förmig zwei Arme 5b nach unten. Die Form dieser Arme 5b ist ähnlich der Oberkante einer Mitra. Die Arme 5b verlaufen nicht in einer Ebene, sondern in der Fläche eines Zylinders, der durch die Innenseite 3 gebildet wird. Die Arme 5b sind gemäss der Figur 6 oben verbunden und besitzen jeweils ein unteres Ende 5c. Vorzugsweise sind die Arme 5b symmetrisch zur Vertikalen. Der Öffnungswinkel der Arme 5b kann unterschiedlich sein. Versuche haben gezeigt, dass ein besonders günstiger Strömungsverlauf dann erreicht wird, wenn dieser Winkel zwischen 50° und etwa 70° ist. Vorzugsweise beträgt dieser Winkel 55 bis 65°. Eine optimale Strömung ergibt sich insbesondere bei einem Winkel von etwa 60°. Die radiale Dicke und auch der Querschnitt der Arme 5b kann unterschiedlich sein. Vorzugsweise ist diese Dicke so gewählt, dass sie im Wesentlichen der Dicke der Filmströmung 12 entspricht. Die Dicke ist beispielsweise kleiner als 2 cm und typischerweise etwa 1 cm. Es sind hier aber auch grössere oder kleinere Dicken denkbar. Die Querschnittsfläche der Arme 5b beträgt beispielsweise etwa 1 cm2 und ist insbesondere eckig, beispielsweise rechteckig. Die Querschnittsfläche kann über die Länge der Arme 5b gleich sein, denkbar ist aber auch eine Änderung dieser Querschnittsfläche.In the inventive deflecting sheet 1, the film flow 12 meets the flow divider 5, as the FIGS. 4 and 6 demonstrate. The flow divider 5 runs along the inner side 3 and that on the side of the outlet opening 2. The flow divider 5 has an upper radially extending edge 5a, which may be rounded or comparatively sharp. From this edge 5a, two arms 5b extend downwardly in a V-shape. The shape of these arms 5b is similar to the top of a miter. The arms 5b do not run in a plane, but in the surface of a cylinder formed by the inside 3. The arms 5b are according to the FIG. 6 connected above and each have a lower end 5c. Preferably, the arms 5b are symmetrical to the vertical. The opening angle of the arms 5b may be different. Experiments have shown that a particularly favorable flow profile is achieved when this Angle between 50 ° and about 70 °. Preferably, this angle is 55 to 65 °. An optimal flow results in particular at an angle of about 60 °. The radial thickness and also the cross section of the arms 5b may be different. Preferably, this thickness is chosen so that it substantially corresponds to the thickness of the film flow 12. The thickness is for example less than 2 cm and typically about 1 cm. But here are also larger or smaller thicknesses conceivable. The cross-sectional area of the arms 5b is for example about 1 cm 2 and is in particular angular, for example rectangular. The cross-sectional area may be the same over the length of the arms 5b, but it is also conceivable to change this cross-sectional area.

Die Filmströmung 12 wird an der Kante 5a geteilt und das Wasser strömt in Teilströmungen jeweils an einer Aussenfläche 5d (Fig. 1) von dieser Kante 5a bis zu dem entsprechenden Ende 5c. Von der Kante 5a aus reisst die Filmströmung 12 auf, wobei sich die oben erwähnte Öffnung 14 bildet. Wesentlich ist nun, dass sich diese Öffnung 14 nicht unmittelbar nach dem Strömungsteiler 5 wieder schliesst, sondern sich nach unten in den bogenförmigen Bereich 1b erstreckt. Die zylindrische Filmströmung 12 wandelt sich dadurch in die in Figur 4 gezeigte Rinnenströmung 16 um, die im unteren Bereich der Austrittsöffnung 2 und entsprechend am Boden des angeschlossenen Rohres verläuft. Über dieser Rinnenströmung 16 befindet sich Luft, welche durch die Öffnung 14 hindurch mit der Luft 13 im vertikalen Bereich 1b verbunden ist. Dadurch ist jederzeit ein Druckausgleich möglich und können Druckschwankungen in der Luft 13 und entsprechend auch bei den angeschlossenen Apparaten vermieden werden.The film flow 12 is divided at the edge 5a and the water flows in partial flows respectively on an outer surface 5d (FIG. Fig. 1 ) from this edge 5a to the corresponding end 5c. From the edge 5a tears the film flow 12, wherein the above-mentioned opening 14 is formed. It is essential that this opening 14 does not close again immediately after the flow divider 5, but extends downwards into the arcuate region 1b. The cylindrical film flow 12 is thereby transformed into the in FIG. 4 shown gutter flow 16 um, which runs in the lower region of the outlet opening 2 and corresponding to the bottom of the connected pipe. Above this channel flow 16 is air, which is connected through the opening 14 with the air 13 in the vertical region 1b. As a result, a pressure equalization is possible at any time and pressure fluctuations in the air 13 and accordingly also in the connected apparatus can be avoided.

Die Arme 5b sind wie oben erwähnt verbunden und erstrecken sich von der Kante 5a aus nach unten. Die Arme 5b erstrecken sich wie aus Figur 4 ersichtlich bis unmittelbar über den Ansatz des bogenförmigen Bereichs 1b. Sie erstrecken sich im Rohrquerschnitt gesehen bis in den halben Rohrumfang. Diese Erstreckung kann auch etwas überschritten bzw. unterschritten werden. Durch diese Erstreckung kann besonders wirksam das dauernde Bestehen der Öffnung 14 gewährleistet werden und zudem bildet sich zuverlässig die oben erwähnte Rinnenströmung 16. Turbulenzen im bogenförmigen Bereich 1b und somit Druckschwankungen im Leitungssystem können damit wirksam vermieden werden. Da solche Druckänderungen bzw. Druckschwankungen die Belastbarkeit des Fallstranges bzw. der Fallleitung begrenzen, ist es mit dem erfindungsgemässen Umlenkbogen 1 möglich, die Leistung bei gleichem Rohrdurchmesser zu erhöhen. Umgekehrt ist es möglich, die gleichen Apparate an eine Fallleitung mit kleinerem Innendurchmesser als bisher anzuschliessen.The arms 5b are connected as mentioned above and extend downwardly from the edge 5a. The arms 5b extend as if from FIG. 4 apparent to just above the approach of the arcuate portion 1b. They extend in the pipe cross-section seen in the half pipe circumference. This extension can also be slightly exceeded or undershot. By this extension, the continuous existence of the opening 14 can be ensured particularly effective and also reliably forms the above-mentioned gutter flow 16. Turbulence in the arcuate region 1b and thus pressure fluctuations in the pipe system can thus be effectively avoided. Since such pressure changes or pressure fluctuations, the resilience of the case strand or limit the downpipe, it is possible with the inventive deflection bend 1, to increase the power at the same pipe diameter. Conversely, it is possible to connect the same apparatus to a down pipe with a smaller inner diameter than before.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Umlenkbogenreversing curve
1 a1 a
vertikaler Bereichvertical area
1b1b
bogenförmiger Bereicharcuate area
22
Austrittsöffnungoutlet opening
33
Innenseiteinside
44
Wandungwall
55
Strömungsteilerflow divider
5a5a
Kanteedge
5b5b
Armpoor
5c5c
unteres Endelower end
5d5d
Aussenflächeouter surface
66
Pfeilarrow
77
Pfeilarrow
88th
Umlenkbogen (Stand der Technik)Deflection bend (prior art)
99
Pfeilarrow
1010
Leitungmanagement
1111
Wasserwater
1212
Filmströmungfilm flow
1313
Luftair
1414
Öffnungopening
1515
Teilströmungpartial flow
1616
Rinnenströmunggutter flow
1717
"Vorhang""Curtain"
KK
Kanalchannel

Claims (12)

  1. Deflecting bend for a downpipe and a discharge of a two-phase flow of water and air, with an essentially vertically running region (1a), with an arcuate region (1b) adjoining the latter and with an essentially horizontal outlet (2), there being arranged on the inside (3) of the essentially vertical region (1a) a flow divider (5) which breaks up a film flow (12) of the water (11) and thereby allows pressure compensation in the flow, characterized in that the flow divider (5) extends at least over one half of the inside (3), as seen in the direction of flow.
  2. Deflecting bend according to Claim 1, characterized in that the flow divider (5) is arranged above the arcuate region (1b).
  3. Deflecting bend according to Claim 1 or 2, characterized in that the flow divider (5) is arranged on the side of the outlet (2).
  4. Deflecting bend according to Claim 1, characterized in that the flow divider (5) extends beyond half of the inside (3).
  5. Deflecting according to one of Claims 1 to 4, characterized in that the flow divider (5) is essentially a form of reversed V or the top edge of a mitre.
  6. Deflecting bend according to one of Claims 1 to 5, characterized in that the flow divider (5) is integrally formed on a wall (4).
  7. Deflecting bend according to one of Claims 1 to 6, characterized in that the flow divider (5) has an upper edge (5a), from which extend downwards two arms (5b) which lie in a surface of a cylinder.
  8. Deflecting bend according to Claim 7, characterized in that the said edge (5a) extends radially.
  9. Deflecting bend according to one of Claims 1 to 8, characterized in that the flow divider (5) has a radial thickness which corresponds essentially to the thickness of the film flow (12), this thickness preferably being lower than about 2 cm.
  10. Deflecting bend according to one of Claims 7 to 9, characterized in that the two arms (5b) form an angle of 50-70°, preferably of 55-65°, and, in particular, an angle of about 60°.
  11. Deflecting bend according to one of Claims 7 to 10, characterized in that the said two arms (5b) have a cross-sectional area smaller than about 2 cm2.
  12. Deflecting bend according to one of Claims 1 to 11, characterized in that the flow divider (5) forms in the film flow (12) an orifice (14) which extends downwards into the arcuate region (1b).
EP06405322A 2006-07-27 2006-07-27 Pipe elbow for a sanitary conduit Active EP1882786B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT06405322T ATE430847T1 (en) 2006-07-27 2006-07-27 DEFLECTOR FOR A DOWNLINE
DE502006003668T DE502006003668D1 (en) 2006-07-27 2006-07-27 Deflection bend for a downfall
EP06405322A EP1882786B1 (en) 2006-07-27 2006-07-27 Pipe elbow for a sanitary conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405322A EP1882786B1 (en) 2006-07-27 2006-07-27 Pipe elbow for a sanitary conduit

Publications (2)

Publication Number Publication Date
EP1882786A1 EP1882786A1 (en) 2008-01-30
EP1882786B1 true EP1882786B1 (en) 2009-05-06

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ID=37527465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405322A Active EP1882786B1 (en) 2006-07-27 2006-07-27 Pipe elbow for a sanitary conduit

Country Status (3)

Country Link
EP (1) EP1882786B1 (en)
AT (1) ATE430847T1 (en)
DE (1) DE502006003668D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102454197A (en) * 2010-10-27 2012-05-16 吉博力国际股份公司 Pipe branch section for downpipes
CN102787699A (en) * 2011-05-19 2012-11-21 吉博力国际股份公司 Pipe branch section for downpipe

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RS60566B1 (en) * 2014-06-05 2020-08-31 Geberit Int Ag Deflection bend
GB201912878D0 (en) * 2019-09-06 2019-10-23 Polypipe Ltd Straight through fluid trap
CN110748733B (en) * 2019-10-28 2021-03-05 湘潭大学 Concrete pump wear-resistant bent pipe with built-in bionic build-up welding spots and flow guide blocks and manufacturing method thereof
WO2023186412A1 (en) 2022-03-31 2023-10-05 Geberit International Ag Sanitary assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220876A (en) * 1967-02-06 1971-01-27 Monique Legg A down pipe construction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102454197A (en) * 2010-10-27 2012-05-16 吉博力国际股份公司 Pipe branch section for downpipes
CN102454197B (en) * 2010-10-27 2015-07-01 吉博力国际股份公司 Pipe branch section for downpipes
CN102787699A (en) * 2011-05-19 2012-11-21 吉博力国际股份公司 Pipe branch section for downpipe
CN102787699B (en) * 2011-05-19 2016-03-02 吉博力国际股份公司 For a pipe fitting of leader

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ATE430847T1 (en) 2009-05-15
DE502006003668D1 (en) 2009-06-18
EP1882786A1 (en) 2008-01-30

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