EP1234919A2 - Elément pour conduit d'eau avec valve anti-retour - Google Patents

Elément pour conduit d'eau avec valve anti-retour Download PDF

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Publication number
EP1234919A2
EP1234919A2 EP01127986A EP01127986A EP1234919A2 EP 1234919 A2 EP1234919 A2 EP 1234919A2 EP 01127986 A EP01127986 A EP 01127986A EP 01127986 A EP01127986 A EP 01127986A EP 1234919 A2 EP1234919 A2 EP 1234919A2
Authority
EP
European Patent Office
Prior art keywords
backflow preventer
water pipe
water
pipe element
element according
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.)
Withdrawn
Application number
EP01127986A
Other languages
German (de)
English (en)
Other versions
EP1234919A3 (fr
Inventor
Peter Schumacher
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.)
Kludi GmbH and Co KG
Original Assignee
Kludi GmbH and Co KG
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 Kludi GmbH and Co KG filed Critical Kludi GmbH and Co KG
Publication of EP1234919A2 publication Critical patent/EP1234919A2/fr
Publication of EP1234919A3 publication Critical patent/EP1234919A3/fr
Withdrawn legal-status Critical Current

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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
    • E03C1/104—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using a single check valve
    • 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
    • E03C1/08—Jet regulators or jet guides, e.g. anti-splash devices

Definitions

  • the invention relates to a water pipe element with at least one Backflow preventer, especially for drinking water pipes / systems.
  • Backflow preventers ensure that the water flow itself at Pressure fluctuations and occurring pressures in the corresponding Water pipe is always formed in one direction only.
  • the arrangement of a Backflow preventer within a water pipe is there, for example of great importance, where at the end of the line the pumped water Contamination is subject and it must be prevented that in case of occurring Suppress contaminated water flow back into the supply line can.
  • non-return valve the closure element of which is not is spring loaded and can be used in water pipes due to the system and design
  • a finite response time i.e. the Backflow preventer takes a finite time to occur at an Back flow of water to close the line.
  • this finite shutter speed can occur within the water pipe backflowing volume of water at considerable speed adjust so that when closing the backflow preventer Kinetic energy of the back-flowing water in the backflow preventer is destroyed and / or reflected, leading to pressure surges in pipe systems leads because this energy of the water flowing back over the Backflow preventer on the pipeline and constructions surrounding the pipeline is dissipated or propagates through the lines in the form of a pressure wave.
  • the problem is also known to be electronic and sensory controlled fittings, due to the very fast closing characteristics of the electrically operated valve pressure peaks in the lines and Fittings occur.
  • the object of the invention is a water pipe element with a To provide a backflow preventer to use with this despite the use of a commercially available conventional check valve / check valve without Pressure compensation device the reduction of pressure peaks and pressure surges in Enable cables in a structurally simple and cost-effective manner without an intervention or a design change to the backflow preventer itself to have to make.
  • This task is solved by having the backflow preventer in and against the desired normal direction of water flow Water pipe element is arranged.
  • This Check valves usually have a cylindrical outer shape with a Coaxial O-ring arranged on the outer housing around the backflow preventer to be used tightly in a pipe element.
  • Backflow preventer and water pipe element designed such that the Backflow preventer at least when exposed to water in the desired flow direction on the inside of the water pipe element rests tightly to avoid flow around the non-return valve. This ensures that when the water flows in the provided flow direction through the water completely Backflow preventer passes through and not on the backflow preventer can flow past.
  • the backflow preventer also at a Exposure to water against the direction of flow, i.e. if the Backflow preventer goes into the closed position, sealing on the inside of the water element in order to also prevent backflow Water past the backflow preventer. In this case there will be a decrease in pressure already achieved in the lines simply by the backflow preventer is displaceable within the water pipe element.
  • the force against which the backflow preventer within the Water pipe element is displaceable can be realized for example be that the backflow preventer, which is a cylindrical outer casing can have, on its outside with coaxial grooves, in which Insert O-rings that hold the backflow preventer against the inside of the Seal the water pipe element. In this way it turns between the slidably mounted non-return valve, especially its O-ring / s and a frictional force on the inside of the water pipe element, which are used to dampen the displacement of the non-return valve can.
  • the backflow preventer in another embodiment, it is possible within the Water pipe element, for example at least one spring element to be arranged at which the backflow preventer has one end, for example the from the end of the water.
  • the backflow preventer can then in its closed position when shifting against the desired Water flow direction only shifted within the spring travel due to the usual spring characteristics, the spring, for example a compression spring, initially over a certain range constantly applies counteracting force, which with further compression of the Spring increased until the spring ultimately reached a maximum Collapse, forms a firm stop.
  • the backflow preventer has one Displacement that corresponds to the sum of both spring travel, the two Form springs with maximum compression in each case an end stop.
  • Such a spring can be placed on any within a water pipe element Way, for example by gluing, soldering, screwing, Clamps etc.
  • the slidably in the water pipe element arranged backflow preventer through the at least one spring element due to the force acting in the direction of flow to a fixed stop can be pressed, which is formed within the water pipe element, so that between the stop and the maximum compressed compression spring the maximum displacement of the slidably mounted non-return valve results within the water pipe element.
  • the water pipe element is given a finite extent, in particular a very compact design, in which the backflow preventer for example, is displaceable over a maximum range, which, for. B. the length of the non-return valve.
  • the backflow preventer at a shift against the water flow direction, in particular in its closed position, against one however, for example force generated by a spring, a flow of water against the Flow direction allows.
  • the reflux of the water can be influenced in such a way that how In a first alternative, the water only mentions the backflow preventer floats against the (spring) force in front of it, but is not able to Backflow preventer, whereas in a second alternative there is also the possibility that when a predefined one is reached Limit pressure to the water due to the construction also the possibility is granted after a shift of the backflow preventer by one predefined way to flow past the backflow preventer in order to reduce any pressure peaks.
  • the latter alternative can be implemented, for example, in such a way that the Backflow preventer after covering a certain displacement releases a bypass line through which the back-flowing water on the Backflow preventer based on the desired one The upstream side of the backflow preventer flows in the direction of flow.
  • a bypass channel is formed, one mouth opening is always on the upstream side of the backflow preventer, whereas a further opening of the bypass channel by moving the Backflow preventer open on the downstream side of the backflow preventer or is closed.
  • the opening of the bypass channel is closed his.
  • a closure can e.g. through an appropriate seal on the backflow preventer, which is via the opening of the bypass channel sets.
  • Such an embodiment can preferably be implemented in that the Cross section of an area of the inner wall of the water pipe element in which the backflow preventer is movable in the direction of the desired flow is tapered at least in a partial area.
  • the backflow preventer which is preferably completely cylindrical, can thus within the water pipe element like a piston in two different Sliding sections with different inner diameters, the Backflow preventer through the spring force in a first area with little Inner diameter / cross-section is pressed in between Backflow preventer and the inside of the water pipe element a very little play results.
  • the small gap between the backflow preventer and the inside of the water pipe element for example, by an O-ring arranged coaxially to the backflow preventer or be sealed by any other sealing element.
  • a sealing element for example an O-ring, be arranged on the backflow preventer.
  • This construction therefore creates a structure Water pipe element with backflow preventer, which is a standard commercially available e.g. cylindrical check valve itself Valve actuator or valve plate forms with which a water flow around the Backflow preventer around can be released or shut off, depending on which position of the non-return valve due to the application of force and a possibly flowing back water or builds up pressure.
  • a standard commercially available e.g. cylindrical check valve itself Valve actuator or valve plate forms with which a water flow around the Backflow preventer around can be released or shut off, depending on which position of the non-return valve due to the application of force and a possibly flowing back water or builds up pressure.
  • an inventive one Water pipe element with backflow preventer on existing Arranging piping systems results from the fact that the Water pipe element at its respective ends connecting areas, has in particular internal and / or external thread to a line that has a corresponding connection area to be connectable.
  • the water line elements according to the invention can be fashioned retrospectively to existing pipe systems, for example with imperial or metric threads.
  • An important field of application of the water pipe elements according to the invention are sanitary fittings with at least one water supply line. Unless it is is provided, a backflow preventer in a water supply line to arrange, a construction with a is preferred here Water pipe element and a movable according to the invention Backflow preventer used.
  • FIG. 1 shows a water pipe element 1 according to the invention, in the Inside a cylindrical check valve 2 is arranged, which is commercially in the Is commercially available and has a diameter of DN 10.
  • the backflow preventer is inside the water pipe element 1 slidably arranged and is in the illustrated embodiment by a Compression spring 3, which within the water pipe element 1 with a Clamping structure 4 is arranged, pressed against an end stop 5, which this means that the water pipe element 1 in the flow direction 8 to tapered towards the end.
  • a screen 6 is also attached to the clamping device 4 in order to prevent dirt particles from the water from continuing to enter the Line to be carried.
  • the water element 1 according to the invention has line elements on its two Both an internal thread 7a and an external thread 7b end.
  • the backflow preventer 2 In the area of the inflow side 12 of the backflow preventer 2 is coaxial cylindrical housing of the backflow preventer 2 an O-ring 9 arranged so that the housing of the backflow preventer 2 against the inside of the Water pipe element 1 is sealed and for example for incoming water gives no possibility through the gap 14 between Backflow preventer 2 and water pipe element 1 the backflow preventer 2 to flow around.
  • FIG. 2 shows this displacement of the backflow preventer 2 within the Water pipe element 1, which on the one hand alone due to the Shift a pressure reduction takes place and on the other hand the Backflow preventer 2 from a first section with less Cross section / inner diameter in a second section with a larger one Cross section of the inside of the water pipe element 1 is shifted.
  • the O-ring 9 detaches from the inside of the water pipe element 2, so that the seal is released and water flowing back through the gap 14 between backflow preventer 2 and water pipe element 1 flow past the backflow preventer 2 and thus into the upstream area 12 can reach.
  • FIG. 3 shows an enlarged view of the flow direction tapered area 13 within which the cross section of the inside of the Water pipe element 1 changed. This area can be even by means of a slope or also step-wise, depending on how that Sealing is constructed.
  • a region 13 is shown in which the cross section of the inside of the Water pipe element 1 from a large diameter to one in The direction of flow is significantly smaller in diameter over a slope rejuvenated. Within the area with the smaller diameter, this results between the backflow preventer 2 and the water pipe element 1 only one very small gap 14, which in the case when the backflow preventer through the Spring is pressed against the stop 5, from the coaxially arranged and around the backflow preventer 2 circumferential O-ring 9 is sealed.
  • the backflow preventer 2 goes due to a backflow or standing water volume in the closed position, so from one certain pressure that is able to overcome the spring force that Backflow preventer 2 released from the stop 5 and contrary to the original Flow direction shifted so that the O-ring 9 is different from the tapering area 13 and water flowing back through the gap 14 the pressure peak can flow past the tapering region 13 dismantle.
  • the backflow preventer can be a commercially available one act cylindrical backflow preventer in the form of a cartridge, the closing element of the backflow preventer e.g. also be spring loaded can and therefore without an inflow in the desired direction, i.e. at standing water passes into the closed position or remains in it.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
  • Domestic Plumbing Installations (AREA)
EP01127986A 2001-02-16 2001-11-24 Elément pour conduit d'eau avec valve anti-retour Withdrawn EP1234919A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001107247 DE10107247A1 (de) 2001-02-16 2001-02-16 Wasserleitungselement mit Rückflussverhinderer
DE10107247 2001-02-16

Publications (2)

Publication Number Publication Date
EP1234919A2 true EP1234919A2 (fr) 2002-08-28
EP1234919A3 EP1234919A3 (fr) 2004-01-28

Family

ID=7674269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127986A Withdrawn EP1234919A3 (fr) 2001-02-16 2001-11-24 Elément pour conduit d'eau avec valve anti-retour

Country Status (2)

Country Link
EP (1) EP1234919A3 (fr)
DE (1) DE10107247A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009169B4 (de) * 2005-02-25 2015-07-30 Grohe Ag Siebkörper für Wasserleitungseinrichtungen
DE102018200530B4 (de) 2018-01-15 2024-06-27 Hansgrohe Se Fluidleitungseinsatz

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000047924A1 (fr) 1999-02-12 2000-08-17 Goodwin International Limited Clapet a dispositif anti-surpression

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818929A (en) * 1973-04-23 1974-06-25 H Braukmann Reduced pressure backflow preventer valve
US4013088A (en) * 1975-05-19 1977-03-22 Braukmann Armaturen Ag Valve structure
DE7727756U1 (de) * 1977-09-08 1985-02-28 Württ. Gaszählerfabrik J. Braun & Co GmbH, 7000 Stuttgart Verschraubungsfitting mit eingebautem rueckflussverhinderer
US4347973A (en) * 1981-01-21 1982-09-07 Robertshaw Controls Company Internal combustion engine coolant system, thermostat therefor and methods of making the same
DE3446425C2 (de) * 1984-12-20 1994-01-20 Vortex Gmbh Dt Rückflußverhinderer für ein Fluid
DE9013595U1 (de) * 1990-08-21 1990-12-06 R.C. Mannesmann AG, Basel Rückflußverhinderer
DE4031205C2 (de) * 1990-10-04 1999-04-22 Grohe Armaturen Friedrich Wasserarmatur mit Rückflußverhinderer
DE4323496C2 (de) * 1993-07-14 2002-08-01 Grohe Armaturen Friedrich Umschaltventilanordnung
DE29703335U1 (de) * 1997-02-25 1997-04-10 Dieter Wildfang GmbH, 79379 Müllheim Rückflußverhinderer
DE19754566A1 (de) * 1997-12-09 1999-06-10 Wildfang Dieter Gmbh Rückschlagventil oder dergleichen Rückflußverhinderer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000047924A1 (fr) 1999-02-12 2000-08-17 Goodwin International Limited Clapet a dispositif anti-surpression

Also Published As

Publication number Publication date
DE10107247A1 (de) 2002-08-22
EP1234919A3 (fr) 2004-01-28

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