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WO2022038181A1 - Trémie de sécurité pour drainage libre - Google Patents

Trémie de sécurité pour drainage libre Download PDF

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Publication number
WO2022038181A1
WO2022038181A1 PCT/EP2021/072928 EP2021072928W WO2022038181A1 WO 2022038181 A1 WO2022038181 A1 WO 2022038181A1 EP 2021072928 W EP2021072928 W EP 2021072928W WO 2022038181 A1 WO2022038181 A1 WO 2022038181A1
Authority
WO
WIPO (PCT)
Prior art keywords
funnel
safety
wall
mesh screen
base plate
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.)
Ceased
Application number
PCT/EP2021/072928
Other languages
German (de)
English (en)
Inventor
Willi Laut
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
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP21765883.0A priority Critical patent/EP4200485B1/fr
Publication of WO2022038181A1 publication Critical patent/WO2022038181A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/102—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using an air gap device
    • 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
    • E03C1/122—Pipe-line systems for waste water in building
    • E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/077—Arrangement of backflow preventing devices

Definitions

  • the invention relates to a safety funnel for realizing a free drainage of waste water while preventing drinking water contamination by backflow, back suction or back pressure of water.
  • One of the measures proposed in this context is the realization of a so-called free drain, which provides for the openings of the corresponding hose, plastic or metal lines above the open funnel siphon receiving the drained water at a distance of at least 20 mm from the upper edge of the Funnel siphons are to be arranged so that in the event of a backwater forming, water that has already drained into the funnel siphon can escape freely into the intermediate area between the upper edge of the siphon and the end of the sewage pipes mentioned above. This means that it cannot rise up through the mentioned sewage pipes against the direction of flow and possibly come into contact with drinking water, so that this could then possibly be contaminated.
  • the installers and processors working in this context are essentially dependent on improvising in this way.
  • that the waste water pipes leading to an open funnel siphon are deflected in such a way that the distance of at least 20 mm required in DIN EN 1717 is maintained, but on the other hand it is also prevented at the same time that the water running off splashes into the area outside of the funnel siphon or flows: This can create practical difficulties on site, particularly in cases where multiple sewer lines are fed to a single funnel siphon.
  • solutions are therefore chosen that reliably prevent the undesired escape of running water, so that in practice the corresponding lines are cut to length below the top edge of the funnel siphon or at least at the level of the top edge of the funnel siphon, so that the DIN EN 1717 required free drainage is not realized in these cases.
  • the safety funnel according to the invention which is fluidly connected to a siphon when it is placed in the position of use and above which one or more drain pipes are then arranged, from which the safety funnel receives waste water, has two basic components: they are these a discharge attachment and a funnel element with a funnel wall which opens into a discharge nozzle.
  • the discharge attachment is arranged flush on the funnel element so that it sits securely. It has a base plate which can be designed entirely as a screen, but in many cases only has a section which is designed as a screen.
  • the surface of the lattice screen is quasi delimited by an edge or an “envelope” and has a guide wall there that extends in the direction of the funnel element.
  • the safety funnel has one or more overflow windows in the wall of the funnel, the extension of which in the direction of the discharge attachment extends to a level of the mesh screen.
  • the height of the overflow window corresponds at least to the diameter of the outlet port.
  • the guide wall can have a depth of 1 cm or more.
  • the height of the overflow window is related to the diameter of the mouth of the drain socket over its total area: All overflow windows together have a total area that results from the addition of all window areas of the existing overflow windows in accordance with DIN EN 1717, with the total window area being at least multiplied corresponds to the height of the windows with the diameter of the mouth of the outlet socket and a factor of 2/3 * TT. DIN EN 1717 therefore prescribes the following relationship:
  • the safety funnel in a further embodiment of the safety funnel, its discharge attachment has a peripheral wall which extends circumferentially around the base plate away from the funnel element, ie upwardly towards the usage arrangement. According to the invention, this means that a line above the safety funnel can be cut to length so that it ends within the peripheral wall and above the lattice screen - this prevents the peripheral wall from escaping spray water that hits the lattice screen into the environment.
  • the mesh screen itself serves to prevent pipes coming from above from being inserted too deeply into the safety funnel. It ensures that precisely the safety distance desired according to the invention, which DIN EN 1717 requires, is maintained for the arrangement of the waste water supply lines from the actual funnel element. In addition, it helps to avoid dirt coming from the outside or via the line from clogging the siphon located under the safety funnel and the safety funnel.
  • a kind of groove is advantageous here, which fits the edge so that the discharge attachment sits securely on the funnel element.
  • the lattice sieve can advantageously be arranged lowered in the base plate, preferably via a downwardly tapering wall, in order to provide an even better conduction of the outflowing water.
  • the base plate has at least two sections which run over a slope in two levels, with the lattice screen being present in the section of the lower level. It can preferably be lowered over the downwardly tapering wall, whereas in the higher-lying section there is at least one receiving opening which is designed to be connected to drain lines, preferably flexible hose drain lines.
  • the lower level of the base plate could also be flanked by two higher levels in order to accommodate even more hose drain lines.
  • the lattice screen is formed by webs. Even more preferably, these can have an aerofoil-like cross-section, the tapered end of which points into the interior of the funnel element.
  • the supplied water is ideally drained and on the one hand there is not enough splashing water into the environment, on the other hand the water is flown favorably into the drain connection, which directs the water into the (in the usage arrangement) connected siphon.
  • a hose connector preferably detachable via a plug connection, is arranged in the safety funnel in the base plate of the discharge attachment in the section not provided with a filter in the one or more receiving opening(s) in a usage arrangement. If the opening is not required (non-use arrangement), a stopper can be detachably inserted or screwed into the opening. Of course, the hose connector could also be arranged in the receiving opening via a screw connection. According to yet another embodiment, at least one fastening device is arranged on the funnel wall of the safety funnel, with the aid of which the funnel can be easily and simply attached to a wall or another object.
  • the fastening device is preferably an angle element made up of two legs, with a first leg being designed to be supported against an object (such as the wall) and the second leg having at least one, preferably two, grips on its free end. These are designed to face upwards, when placed in one or more of the spill windows, to receive and hold the funnel wall which forms the upper edge of the spill windows.
  • the funnel can be screwed to the wall and cleverly adjusted using the long holes provided in the side facing the wall or the object.
  • the angle element can also have a support element on the second leg, which is supported against the funnel wall, for example a small angle or a triangular plate.
  • an ordinary hose clamp can also be arranged around the discharge nozzle in order to secure the fastening of the safety funnel to a wall or something else.
  • the overflow windows can have different geometries - two windows can be arranged in pairs, they can be polygonal or round - it is important that their height corresponds at least to the diameter of the outlet socket and that they have a certain base area. Triangular cut-outs with the tip pointing downwards have proven to be particularly favorable, since they exhibit very good splash water behavior.
  • the base area consists of the addition of all window areas of the existing windows and is related to the height of the overflow window according to the window areas described above, as DIN EN 1717 prescribes.
  • ordinary rectangular cutouts can also be used.
  • the edge of the funnel element has a rectangular or oval shape.
  • the derivation attachment has a corresponding rectangular or oval basic shape, with preference being given to the Section of the mesh screen occupies one half to three quarters of the base plate. Both components are thus precisely tailored to each other. Furthermore, a large area of the mesh screen enables good drainage into the hopper.
  • FIG. 1a is a perspective view of a funnel element of a safety funnel according to the invention
  • FIG. 1b is a plan view of a funnel element of a safety funnel according to the invention from FIG. 1a,
  • FIG. 1c is a plan view of an alternative funnel element of a safety funnel according to the invention from FIG. 1a
  • FIG. 2a shows a side view of a discharge attachment of a safety funnel according to the invention
  • FIG. 2b shows a side sectional view of a discharge attachment of a safety funnel according to the invention with a hose connector
  • 2c is a sectional view of the lattice bar profile
  • FIG. 3 shows a perspective view of a safety funnel according to the invention with two receiving openings for two separate hose connectors
  • FIG. 4 shows a perspective view of a safety funnel according to the invention according to FIG. 3,
  • Fig. 5 is a front view of an inventive. safety funnel according to Fig. 3,
  • Fig. 6 is a front view of an inventive. Safety funnel with a receiving opening that carries two hose nozzles via a connector piece.
  • the invention relates to a safety funnel which serves the purpose of receiving and discharging waste water, in particular from domestic drain pipes, and which reliably prevents that in the event of a backwater in the waste water drain pipes, dirty water will overflow into the house water pipe.
  • the safety funnel 1 can be seen in FIGS. 3, 4 and 5 and 6. It consists of two basic components, namely a discharge attachment 10, as can be seen individually in FIGS. 2a and 2b, and a funnel element 20, which can be seen individually in Figures 1a, 1b and 1c.
  • the funnel element 20 has a discharge nozzle 22 which extends into a funnel shape with a wall 21 .
  • the discharge attachment 10 is arranged flush on the funnel element 20 in a usage arrangement of the safety funnel 1, as shown in FIGS. 1a shows a shoulder-like step that allows the lower end of the funnel wall 21 to open into the outlet port 22; alternatively, see FIG. 1c, this paragraph can also be omitted.
  • the discharge attachment 10 has a base plate 11, see FIGS. 2b and 3, which contains a mesh screen 12.
  • the entire base plate 11 could be equipped with the lattice screen 12, which is not shown in the figure.
  • the mesh screen is delimited by a rim 12' which in the embodiment shown in Figure 2b and further Figures has a peripheral wall 14 around the delimiting rim 12'. What is achieved is that water transferred from the discharge line 100, as is to be arranged above a safety funnel according to the invention, indicated in FIG. 2b, into the discharge attachment 10 is not distributed as spray water into the environment.
  • a guide wall 13 is arranged around the edge 12' of the lattice screen 12, which can be formed directly in one piece with the other components of the discharge attachment 10, for example when the safety funnel according to the invention is manufactured using injection molding or 3D printing.
  • This guide wall 13 extends in the direction of the funnel element 20 and also serves to guide the water flow coming from above and to transfer it immediately into the discharge nozzle 22 while avoiding unfavorable flow and splashing behavior.
  • the safety funnel 1 has an overflow window 23 which is in the funnel wall. tion 21 are provided. These extend from bottom to top in the direction of the drainage attachment 10 up to the plane in which the mesh screen 12 extends when the drainage attachment 10 and the funnel element 20 are assembled and consequently in the usage arrangement.
  • the height h of the overflow window 23 corresponds at least to the diameter D of the mouth of the outlet port 22 . See Fig. 1a.
  • the overflow window 23 should have a surface that ensures that all the water supplied from above and also from below, in the event of a backlog, the water that is pushed up from the outlet connection 22 into the funnel element 20 can safely flow out through the overflow window 23 so that a free Drainage of the water is also guaranteed in an emergency in order to prevent contamination of the domestic drinking water by backflow, sucking back or pushing back water into the line(s) coming from above.
  • DIN EN 1717 requires the sewage supply lines to be arranged in such a way that they are at least 20 mm apart from the actual funnel element:
  • the solution according to the invention means that a section is placed on the lower section of the funnel wall 21, which contains the overflow window 23 and which therefore meets the requirement of free Drainage and further the spacing of the sewer line 100 coming from above is satisfied.
  • the added section results in the reliable prevention of splashing water to the outside when the safety funnel is in normal operation, i.e. no emergency situation with backwater occurs.
  • a surrounding gripping element 16 which can run all the way around or only along certain sections of the edge 15 and which forms a kind of groove in which the Edge 15 of the funnel element 20 comes to rest in the use arrangement. You can run this arrangement as a plug connection.
  • the lattice screen 12 can advantageously be arranged lowered in the base plate 11, as FIG. 3 clearly shows.
  • the base plate 11 then tapers downwards via a wall 11', so that a guide element for the waste water coming from above is also formed here.
  • the base plate 11 can be divided into sections that lie in different planes, see Fig. 2b: section A1 is arranged higher here than section section A2 containing the grid element 12. The two sections are connected via the slope S. As can be clearly seen here, the lattice element 12 only occupies part of the base area of the base plate 11 here; about two thirds.
  • FIG. 5 shows an arrangement with two receiving openings 30, which carry two hose nozzles 32 independently of one another, which incidentally can also be straight hose nozzle pieces instead of a stepped or corrugated shape
  • FIG 33 carries, in the two hose connector pieces 32 open.
  • FIG. 6 shows schematically that an ordinary hose clamp 34 for fastening the safety funnel to a wall, for example, can be provided on the discharge connection 22—further fastening devices, such as those shown in FIG. 4, can then be dispensed with.
  • the hose connector pieces 32 can be guided into the receiving opening 30 coming straight from above or, alternatively, with an incline.
  • Moderately dripping water from household appliances can be drained off without any problems - this often comes in drops and not in a strong surge and therefore hardly causes any problems with splashing water. But a stronger jet, for example during a rinsing or regeneration process, can also be discharged without any problems.
  • the receiving openings 30 are designed with a border, see FIG. 2b:
  • a ring is made into the intended opening, so to speak, which allows the hose connector 32 to be positioned securely.
  • the hose connectors can be arranged at an angle of about 5°.
  • the ring shape leading to a protrusion above and below outside the base plate 11 allows a plug or hose tail 32 passed through the receiving opening 30 to be secured from the underside with a sealing means such as an O-ring.
  • the safety funnel according to the invention could have a discharge attachment that has several sections that are designed to accommodate hose lines, such as section A1 here—this could also be present again, mirrored to the right, as it were in FIG.
  • section A2 with the lattice element could be significantly larger or to be present in two or more sections. This is at the discretion of the professional if he has to provide appropriately sized safety funnels to accommodate a large number of drain lines from above.
  • the safety funnel according to the invention has an oval or rectangular shape; Rounded corners are elegant and clever in terms of production technology.
  • the rectangular or oval base can be easily divided into sections A1 and A2.
  • the lattice screen 12 is, see FIG. 3, formed by webs which, in a preferred embodiment, have an airfoil-like cross section: FIG. 2c shows this as detail B of FIG. 2b.
  • the lower end of a web pointing into the interior of the funnel element tapers, which serves to optimize the problem of splashing water: improved water flow is achieved and water vortices in the funnel are reduced or even prevented.
  • the safety funnel according to the invention can also have a fastening device that is present on a funnel wall 21 .
  • this fastening device can be an angle element 50 which has a first leg 52, with which it is braced against an object such as a wall, and which has a second leg 53, see FIG. 4 , at the free end of which two grips 54 are arranged, are arranged in the overflow window 23 of the wall of the funnel 21 and which receive the funnel wall, which forms the upper edge of the overflow window 23, from below. Only one of the wraparounds 54 can be seen in the image in FIG. About elongated holes 51 in the first leg are arranged, the angle element 50 can be attached to a wall, such. B. screwed.
  • the overflow window 23 can have different shapes: it can be a rectangle, a circle, an ellipse or just any shape that a person skilled in the art deems suitable for this application. What is important is that its total area, or the total area of all overflow windows present, has the necessary floor area to ensure free flow, which is the aim of the present invention here.
  • the total area S total of all overflow windows 23 is made up of the areas Si , S 2 ,... of the individual overflow windows and is related to the diameter D of the opening of the outlet connection 22 as follows:
  • overflow window height h to be maintained, which should always correspond at least to the diameter D of the outlet connection 22 .
  • up and “down” in the present description means in relation to the direction of water flow, and in relation to the location of the safety funnel in the house.
  • the drainpipes of the waste water come from above and flow down into the sewage system, accordingly the safety funnel is placed in its operational arrangement in the flow path.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

La présente invention concerne une trémie de sécurité (1) permettant de réaliser un drainage libre des eaux usées, et comprenant un capuchon de drainage (10) et un élément de trémie (20) ayant une paroi de trémie (21) qui s'ouvre dans une buse de drainage (22). Le bouchon de drainage (10) affleure l'élément de trémie (20) dans un agencement d'utilisation de la trémie de sécurité (1) et comporte une plaque de base (11) qui est conçue au moins en partie ou entièrement en tant qu'écran (12) qui, autour d'un bord (12') délimitant la surface de l'écran (12), présente une paroi de guidage (13) qui s'étend dans la direction de l'élément de trémie (20). La trémie de sécurité (1) présente dans la paroi de la trémie (21) une ou plusieurs fenêtres de trop-plein (23) avec une étendue dans la direction du capuchon de drainage (10) qui atteint jusqu'à un plan de l'écran (12), et une hauteur (h) des fenêtres de trop-plein (23) correspond au moins à un diamètre (D) de l'embouchure de la buse de drainage (22).
PCT/EP2021/072928 2020-08-18 2021-08-18 Trémie de sécurité pour drainage libre Ceased WO2022038181A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21765883.0A EP4200485B1 (fr) 2020-08-18 2021-08-18 Trémie de sécurité pour drainage libre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020003533.5U DE202020003533U1 (de) 2020-08-18 2020-08-18 Sicherheitstrichter für einen freien Ablauf mit einem Siphon und einer Ablaufleitung
DE202020003533.5 2020-08-18

Publications (1)

Publication Number Publication Date
WO2022038181A1 true WO2022038181A1 (fr) 2022-02-24

Family

ID=73547483

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/072928 Ceased WO2022038181A1 (fr) 2020-08-18 2021-08-18 Trémie de sécurité pour drainage libre

Country Status (3)

Country Link
EP (1) EP4200485B1 (fr)
DE (1) DE202020003533U1 (fr)
WO (1) WO2022038181A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592964A (en) * 1994-08-11 1997-01-14 Traylor; Paul L. Air gap anti-siphon System
EP3085839A1 (fr) * 2015-04-20 2016-10-26 Willi Laut Pont de sécurité pour une course libre et système de course libre
EP3208392A1 (fr) * 2016-02-22 2017-08-23 McAlpine & Co Ltd. Valve anti-retour pour adoucisseur d'eau
JP2019194438A (ja) * 2019-08-01 2019-11-07 未来工業株式会社 間接排水用継手及び機器設置構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592964A (en) * 1994-08-11 1997-01-14 Traylor; Paul L. Air gap anti-siphon System
EP3085839A1 (fr) * 2015-04-20 2016-10-26 Willi Laut Pont de sécurité pour une course libre et système de course libre
EP3208392A1 (fr) * 2016-02-22 2017-08-23 McAlpine & Co Ltd. Valve anti-retour pour adoucisseur d'eau
JP2019194438A (ja) * 2019-08-01 2019-11-07 未来工業株式会社 間接排水用継手及び機器設置構造

Also Published As

Publication number Publication date
EP4200485C0 (fr) 2024-04-24
EP4200485A1 (fr) 2023-06-28
DE202020003533U1 (de) 2020-11-10
EP4200485B1 (fr) 2024-04-24

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