EP2843141A1 - Gicleur - Google Patents

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Publication number
EP2843141A1
EP2843141A1 EP20130004214 EP13004214A EP2843141A1 EP 2843141 A1 EP2843141 A1 EP 2843141A1 EP 20130004214 EP20130004214 EP 20130004214 EP 13004214 A EP13004214 A EP 13004214A EP 2843141 A1 EP2843141 A1 EP 2843141A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
jet nozzle
propulsion jet
cross
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.)
Granted
Application number
EP20130004214
Other languages
German (de)
English (en)
Other versions
EP2843141B1 (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 Rohrleitungssysteme AG
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 Georg Fischer Rohrleitungssysteme AG filed Critical Georg Fischer Rohrleitungssysteme 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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 propulsion jet nozzle for installation in drinking or service water systems as well as in ultrapure water systems preferably in the main line, wherein at least one ring line is arranged on the main line and wherein the propulsion jet nozzle is arranged between the branch fittings of the ring line, wherein the ring line an inlet opening and an outlet opening having.
  • 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.
  • a sufficiently high pressure difference ⁇ p should not be complied with since piping systems should aim for the lowest possible pressure difference ⁇ p.
  • the object is achieved according to the invention in that the cross-sectional area of the inlet opening is constant and the cross-sectional area of the outlet opening can be changed.
  • the propulsion jet nozzle is preferably installed in the main line depart from the ring lines.
  • 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 joining takes place, 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 is placed and fixed by simply inserting it into a fitting of the main conduit, the inlet opening of the nozzle being only slightly smaller than the cross section of the main conduit.
  • 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.
  • a preferred embodiment of the present 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.
  • 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 eg. A T-piece must be inserted and by screwing the fitting with an appealing connector, the propulsion 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 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.
  • nozzle wall is formed bellows, whereby the cross-sectional area of the outlet opening can change according to the volume flow.
  • Another embodiment of the propulsion jet nozzle is to make the nozzle wall elastic.
  • 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.
  • 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 are also repeatedly flowed through with fresh water, even if no consumer is arranged on it or this is rarely actuated, the flow in the ring line 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. It is oriented such that the cross-sectional area of the propulsion jet nozzle 1 in the direction of flow of the volume flow V can reduce.
  • 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. If, for example, water is withdrawn at the end of the main line 11 at a tapping point or by a consumer, 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 drain 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)
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 true EP2843141A1 (fr) 2015-03-04
EP2843141B1 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)

Country Link
EP (1) EP2843141B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3617569A1 (fr) 2018-08-28 2020-03-04 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

Citations (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
WO2009060285A1 (fr) * 2007-11-07 2009-05-14 Georg Fischer Llc Système de distribution d'eau à pureté élevée
DE202008003646U1 (de) * 2008-03-14 2009-07-23 Gebr.Kemper Gmbh + Co.Kg Metallwerke Ringleitung für ein Trink- oder Brauchwassersystem
US20110100496A1 (en) * 2009-11-02 2011-05-05 Elasto-Valve Rubber Products, Inc. I-Beam Check Valve
EP2592191A2 (fr) 2011-11-08 2013-05-15 VIEGA GmbH & Co. KG Élément de liaison tubulaire

Patent Citations (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
WO2009060285A1 (fr) * 2007-11-07 2009-05-14 Georg Fischer Llc Système de distribution d'eau à pureté élevée
DE202008003646U1 (de) * 2008-03-14 2009-07-23 Gebr.Kemper Gmbh + Co.Kg Metallwerke Ringleitung für ein Trink- oder Brauchwassersystem
US20110100496A1 (en) * 2009-11-02 2011-05-05 Elasto-Valve Rubber Products, Inc. I-Beam Check Valve
EP2592191A2 (fr) 2011-11-08 2013-05-15 VIEGA GmbH & Co. KG Élément de liaison tubulaire

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3617569A1 (fr) 2018-08-28 2020-03-04 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
EP3933349A1 (fr) 2020-07-03 2022-01-05 Gebr. Kemper GmbH + Co. KG Dispositif de mesure de débit volumique et module de chauffage d'eau doté d'un tel dispositif
EP3933349B1 (fr) * 2020-07-03 2024-03-06 Gebr. Kemper GmbH + Co. KG Dispositif de mesure de débit volumique et module de chauffage d'eau doté d'un tel dispositif
DE202020104087U1 (de) 2020-07-15 2021-10-18 Gebr. Kemper Gmbh + Co. Kg Trink- und Brauchwassersystem
EP3951271A2 (fr) 2020-07-15 2022-02-09 Gebr. Kemper GmbH + Co. KG Système d'eau potable et d'eau sanitaire

Also Published As

Publication number Publication date
EP2843141B1 (fr) 2015-08-19

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