EP2843141B1 - Système de conduites avec gicleur - Google Patents

Système de conduites avec gicleur Download PDF

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Publication number
EP2843141B1
EP2843141B1 EP13004214.6A EP13004214A EP2843141B1 EP 2843141 B1 EP2843141 B1 EP 2843141B1 EP 13004214 A EP13004214 A EP 13004214A EP 2843141 B1 EP2843141 B1 EP 2843141B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
cross
jet nozzle
flow
sectional area
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.)
Active
Application number
EP13004214.6A
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German (de)
English (en)
Other versions
EP2843141A1 (fr
Inventor
Stephan Bürli
Beat Muheim
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.)
Georg Fischer JRG AG
Original Assignee
Georg Fischer JRG AG
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Publication date
Application filed by Georg Fischer JRG AG filed Critical Georg Fischer JRG AG
Priority to EP13004214.6A priority Critical patent/EP2843141B1/fr
Publication of EP2843141A1 publication Critical patent/EP2843141A1/fr
Application granted granted Critical
Publication of EP2843141B1 publication Critical patent/EP2843141B1/fr
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Classifications

    • 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
    • E03B7/04—Domestic or like local pipe systems
    • E03B7/045—Domestic or like local pipe systems diverting initially cold water in warm water supply
    • 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
    • E03C2001/026—Plumbing installations for fresh water with flow restricting devices

Definitions

  • the invention relates to a drinking or service water systems as well as ultrapure water systems with a main line, wherein at least one ring line is arranged on the main line and A foundede Trentsarmaturen with a Kochstrahldüse the Desstrahldüse between Abzweigarmaturen the loop is arranged, the Examstrahldüse an inlet opening, an outlet opening and a nozzle wall wherein the cross-sectional area of the inlet opening is constant and the nozzle wall is flexible and thereby the cross-sectional area of the outlet opening is variable, wherein the nozzle wall is slotted, whereby individual tabs are formed.
  • nozzles are in the JP 6121577 , of the GB 1 354 691 and the WO 2011/0100496 A1 disclosed.
  • the GB 1 354 691 discloses a nozzle with tabs which are molded directly into the pipeline and thus made of the same material, which makes it impossible to replace the nozzle to, for example, to obtain a different resistance of the tabs.
  • the object of the present invention is to achieve a sufficiently high pressure difference .DELTA.p for small tap volumes or low volume flow, which ensures a flow in the loop.
  • an undesirably high pressure difference ⁇ p should not be complied with since piping systems should aim for the lowest possible pressure difference ⁇ p. This in turn should also be achieved by a certain rigidity of the tabs.
  • the tabs have ribs or spring arms with which the rigidity of the tabs can be influenced in a targeted manner.
  • the jet nozzle is installed in the main line, from which the ring lines go off.
  • Themaschinestrahldüse is installed between the branch fittings of the ring line, preferably in the region of the branch fitting of the outlet of the loop, so that the reduction of the cross section of the nozzle along the direction of flow, whereby at the water removal at the consumer behind the nozzle in the flow direction, a pressure difference ⁇ p is triggered which stimulates a flow in the loop.
  • the propulsion jet nozzle Placed and fixed by simply inserting it into a fitting of the main line, wherein the inlet opening of the nozzle is only slightly smaller than the cross section of the main line.
  • the volume flow or the flow in the conduit is small, whereby the cross-sectional area of themaschinestrahldüse at the outlet opening also remains small in order to achieve a sufficiently high pressure difference .DELTA.p, thereby stimulating a flow in the loop and the water in the loop is exchanged to ensure a good water quality, even in pipe sections that are otherwise hardly flowed through.
  • the flow or the volume flow is also high, as a result of which the cross-section of the propulsion jet nozzle widens in order to keep the pressure difference ⁇ p as low as possible.
  • the pressure difference ⁇ p must still be so high that a suction effect is triggered, whereby the water in the loop is pulled along.
  • the invention consists in that the cross-section of the outlet opening changes in accordance with the volume flow, in particular that the cross-sectional area of the outlet opening is small at low flow rate and high at high flow rate.
  • the nozzle wall must be flexible.
  • the nozzle has a constant cross-sectional area at the inlet opening, which does not change when the volume flow changes. Depending on the volume flow, however, the cross-sectional area of the outlet opening of the nozzle changes.
  • the cross-sectional area of the propulsion jet nozzle is reduced along the length of the nozzle according to the volume flow.
  • the inlet opening preferably has a round or polygonal shape. It is slightly smaller than the cross-sectional area of the main line into which the nozzle is installed in order to produce as little resistance as possible.
  • the nozzle only in a fitting, for example, a T-piece must be inserted and by screwing the fitting with an opponent Connecting piece, the jet nozzle is fixed in the main line.
  • the nozzle is fixed by a thread or a quick release in the main line.
  • the propulsion jet nozzle is preferably formed in one piece, which ensures economical production.
  • the nozzle wall of the jet nozzle is flexible. This can be achieved in that the wall is slotted, whereby individual tabs are formed.
  • the number of slots and thus the resulting tabs is arbitrary, preferably, the nozzle has four to ten slots and tabs.
  • the tabs diverge, as conceivable as in the case of an opening of a flower, as a result of which the cross-sectional area of the outlet opening increases.
  • the tabs close correspondingly or the cross-sectional area of the outlet opening decreases.
  • an elastic material is used, which expands and contracts according to the volume flow.
  • Fig. 1 shows an installedmaschinestrahldüse 1 in a main line 11 of a service, drinking or ultra pure water pipe system.
  • main line 11 On the main line 11 at least one ring line 12 is arranged, which is connected by branch fittings 5, 6 with the main line 11.
  • branch fittings 5, 6 Preferably T-pieces 9 are used, with other branch fittings can be used. So that such ring lines 12 always again be flowed through with fresh water, even if no consumer is placed on it or this is rarely operated, the flow in the loop 12 is excited by means of a propulsion jet nozzle 1.
  • the propulsion jet nozzle 1 is arranged between the two branching fittings 5, 6.
  • the inlet opening 2 of the propulsion jet nozzle 1 has a constant unchangeable cross-section. Over the length of the nozzle 1, the cross-sectional area is reduced, wherein it does not have to be over the entire length of the nozzle 1, it is also sufficient over an area up to the outlet opening 3 of the nozzle 1. At maximum volume flow V, the cross-sectional area of the outlet opening 3 expands such that it corresponds to the cross-sectional area of the inlet opening 2.
  • the propulsion jet nozzle 1 is arranged in the region of the branch fitting 6 of the outlet ring line 12, so that the desired Venturi effect occurs.
  • the water flows through the nozzle 1.
  • the cross-sectional constriction by means of the nozzle 1 causes a change in speed and consequently a pressure difference .DELTA.p which occurs in the ring line 12 triggers a flow and so sucks fresh water into the loop 12 (venturi effect).
  • the cross section of the outlet opening 3 of the nozzle 1 adapts in accordance with the volume flow V in the main line 11. This means that at high or maximum volumetric flow V, the outlet opening 3 widens to the maximum cross-section 8, which corresponds approximately to the maximum cross-sectional area of the inlet opening 2 of the nozzle 1.
  • the outlet opening 3 has a minimal cross-sectional opening 7 .
  • a sufficiently high pressure difference .DELTA.p is achieved by the cross-sectional area reduction of the outlet opening 3 at low or minimum volume flow V in order to excite a flow v in the ring line 12.
  • a cross-sectional area enlargement of the outlet opening 3 is achieved so that the pressure difference ⁇ p does not turn out too great, which is undesirable in such piping systems.
  • the propulsion jet nozzle 1 can only be inserted into the T-piece 9 and then screwed by means of connection piece 10, so that the nozzle 1, in the region of its inlet opening, is clamped therebetween.
  • the nozzle 1 may have a thread by means of which it can be screwed into the connector. Also, other mounting options are quite conceivable.
  • Fig. 2 shows a propulsion jet nozzle 1, which has slots 13 in the nozzle wall 4.
  • the inlet opening 2 is round.
  • the cross-sectional area in the region of the inlet opening 2 remains constant even during the change in the volume flow V.
  • the drive jet nozzle 1 is flexible or the cross-sectional area of the outlet opening 3 can be changed by means of the slots 13 which run in the nozzle wall 4.
  • Tabs 14 are formed through the slots 13, which open or close corresponding to the volume flow V.
  • the tabs 14 have ribs 15, which need not extend over the entire length.
  • a nozzle 1 four to ten tabs 14 wherein also a different number is possible.
  • Fig. 3 shows a further possible embodiment of a propulsion jet nozzle 1 according to the invention.
  • Fig. 4 a function diagram is shown, which shows the pressure difference .DELTA.p as a function of the volume flow V in the main line 11.
  • Curve A shows the course of a static jet nozzle, which is known from the prior art and does not change its geometry. The diagram shows that A achieves no pressure difference ⁇ p or only a minimal pressure difference ⁇ p at a low volume flow, as a result of which a sufficiently high suction effect is not achieved in the ring line 12 and thus no exchange of the water in the loop can take place.
  • the pressure difference ⁇ p is undesirably high.
  • Curve B shows the course of the nozzle according to the invention 1.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Nozzles (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (4)

  1. Systèmes de conduites d'eau de traitement ou d'eau potable d'un bâtiment tout comme des systèmes de conduites d'eau extrêmement pure comprenant une conduite principale (11), au moins une conduite annulaire (12) étant disposée au niveau de la conduite principale (11), et des robinets de branchement (5, 6) avec un gicleur (1), le gicleur (1) étant disposé entre les robinets de branchement (5, 6) de la conduite annulaire (12), le gicleur (1) présentant une ouverture d'entrée (2), une ouverture de sortie (3) et une paroi de gicleur (4), la surface en section transversale de l'ouverture d'entrée (2) étant constante et la paroi de gicleur (4) étant flexible et de ce fait la surface en section transversale de l'ouverture de sortie (3) variant en fonction du débit volumique, caractérisés en ce que la paroi de gicleur (4) est fendue, de sorte que des pattes individuelles (1) soient formées, lesquelles présentent des nervures (15) ou des bras élastiques (16) pour renforcer les pattes (14).
  2. Gicleur (1) selon la revendication 1, caractérisé en ce que la section transversale de l'ouverture de sortie (3) varie en fonction du débit volumique (V) dans la conduite principale (11), en particulier en ce que la surface en section transversale est petite dans le cas d'un faible débit volumique (V) et est grande dans le cas d'un débit volumique (V) élevé.
  3. Gicleur (1) selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'ouverture d'entrée (2) est ronde ou polygonale.
  4. Gicleur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le gicleur (1) est réalisé d'une seule pièce.
EP13004214.6A 2013-08-27 2013-08-27 Système de conduites avec gicleur Active EP2843141B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13004214.6A EP2843141B1 (fr) 2013-08-27 2013-08-27 Système de conduites avec gicleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13004214.6A EP2843141B1 (fr) 2013-08-27 2013-08-27 Système de conduites avec gicleur

Publications (2)

Publication Number Publication Date
EP2843141A1 EP2843141A1 (fr) 2015-03-04
EP2843141B1 true EP2843141B1 (fr) 2015-08-19

Family

ID=49080649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13004214.6A Active EP2843141B1 (fr) 2013-08-27 2013-08-27 Système de conduites avec gicleur

Country Status (1)

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EP (1) EP2843141B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3617569B1 (fr) 2018-08-28 2021-02-17 Georg Fischer JRG AG Armature de raccordement ainsi que système de conduites d'eau
DE202020000955U1 (de) 2020-03-06 2021-06-10 Gebr. Kemper Gmbh + Co. Kg Vorrichtung zur Strömungsteilung
DE202020103873U1 (de) 2020-07-03 2021-10-07 Gebr. Kemper Gmbh + Co. Kg Vorrichtung zur Volumenstrommessung
DE202020104087U1 (de) 2020-07-15 2021-10-18 Gebr. Kemper Gmbh + Co. Kg Trink- und Brauchwassersystem

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1354691A (en) * 1970-02-12 1974-05-30 Black M M Fluid-operated valves
JPS61211577A (ja) * 1985-03-14 1986-09-19 Fujikura Rubber Ltd 逆止弁
DE202007009832U1 (de) * 2007-07-12 2008-11-13 Gebr. Kemper Gmbh & Co. Kg Metallwerke Anschlussarmatur
US20100212750A1 (en) * 2007-11-07 2010-08-26 Georg Fischer Llc High Purity Water System
DE202008003646U1 (de) * 2008-03-14 2009-07-23 Gebr.Kemper Gmbh + Co.Kg Metallwerke Ringleitung für ein Trink- oder Brauchwassersystem
CA2684248C (fr) * 2009-11-02 2014-12-09 Elasto-Valve Rubber Products, Inc. Clapet a barre en i
DE102011055138B4 (de) 2011-11-08 2013-09-12 Viega Gmbh & Co. Kg Rohrförmiges Verbindungselement

Also Published As

Publication number Publication date
EP2843141A1 (fr) 2015-03-04

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