EP1887150B1 - Drinking and domestic water system and method for operating such a system - Google Patents

Drinking and domestic water system and method for operating such a system Download PDF

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Publication number
EP1887150B1
EP1887150B1 EP07022601.4A EP07022601A EP1887150B1 EP 1887150 B1 EP1887150 B1 EP 1887150B1 EP 07022601 A EP07022601 A EP 07022601A EP 1887150 B1 EP1887150 B1 EP 1887150B1
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EP
European Patent Office
Prior art keywords
drinking water
string
water system
flow
branch
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Application number
EP07022601.4A
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German (de)
French (fr)
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EP1887150A3 (en
EP1887150A2 (en
Inventor
Ulrich Petzolt
Raimund Peters
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.)
Gebr Kemper GmbH and Co KG
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Gebr Kemper GmbH and Co KG
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Application filed by Gebr Kemper GmbH and Co KG filed Critical Gebr Kemper GmbH and Co KG
Priority to PL07022601T priority Critical patent/PL1887150T3/en
Publication of EP1887150A2 publication Critical patent/EP1887150A2/en
Publication of EP1887150A3 publication Critical patent/EP1887150A3/en
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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
    • E03B7/09—Component parts or accessories
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems

Definitions

  • the following invention relates to a drinking water system with a transfer point from a public drinking water supply network and at least one floor or riser and several in the extension direction of the strand arranged one behind the other and each leading to at least one withdrawal point lines that depart from the strand.
  • the present invention relates in particular to a water system according to the DE-U-93 02 446 and DE-U-8 915 477 out.
  • DE-U-93 02 446 is considered in view of the preamble features of claim 1 as generic.
  • the present invention relates in particular to a drinking water system in a building.
  • floor ducting is understood in particular to mean a horizontally extending pipe which supplies a group or all rooms of a floor, for example a hotel or a hospital, with drinking water.
  • a riser connects different floors of a building with each other and usually extends only in the vertical. From the riser pipe go from lines that usually supply superimposed wet cells of the building with drinking or service water.
  • the present invention may be configured as a cold water system; but also conceivable is the training as a hot water system. The invention primarily wants to specify a corresponding drinking water system without permanent circulation.
  • the present invention is based on the problem to provide a drinking water system, which ensures the most hygienic operation and with which the risk of contamination can be effectively countered. Furthermore, the present invention will provide a method for operating a drinking water system, through which the risk of contamination of the drinking water system can be effectively countered.
  • the present invention provides a water system according to claim 1.
  • the ring lines and their branch or mouth are formed on the strand such that when removing drinking or service water to a consumer connected to the strand by a flow in the strand between the branch and the mouth or the loops of the strand a pressure difference is generated, by which in the consumer assigned and the one or more upstream in the flow direction a loop purge flow is generated.
  • the flow in the drinking water system takes place here solely due to the difference in pressure between the transfer point and the delivery point or the sampling point.
  • the present invention proposes a passive drinking water system that does not require a pump to provide flow in the system.
  • the flow in the system is effected solely by the pressure potential which, due to the overpressure at the transfer point, rests against the pressure at a removal point.
  • the driving force for a flow within the drinking water system according to the independent aspect of the present invention is thereafter only the overpressure in the line system, which is applied to the public network in this.
  • the drinking water system according to the invention is then designed so that a ring line with consumer, which is used for water extraction, upstream ring lines are flowed through because of the pressure difference in the strand with a purge flow.
  • the pressure difference is effected by the flow generated in the strand to the consumer.
  • only the last hotel room in the direction of flow must be assigned an assigned sanitary unit in order to flow through the water in this room through the entire floor space of the assigned hotel floor. In this way, a microbial contamination of all arranged on the strand loops can be effectively reduced.
  • a drinking water system is to be specified, which ensures in a simple manner that a consumer can each tap fresh water at a sampling point.
  • a controllable valve ie a motor-driven valve is provided, which can provide a flow and thus an exchange of spent water with fresh water. It is also about providing, for example, fresh cold water at the sampling points.
  • the present invention wants to specify a drinking water system that is as simple as possible. This should do without a circulation pump or the like. The flow in the drinking water system is accordingly effected solely by the difference between the pressure at the transfer point and the pressure at the removal point.
  • the drinking water tank according to the invention is a passive system in which a circulation pump is missing, which ensures a constant flow.
  • a corresponding circulation pump can be part of the drinking water system in conjunction with a controllable valve.
  • the present invention desirably seeks to prevent the water contained in the system from being purified by circulating and passing through a water treatment, as disclosed in US Pat DE-U-93 02 446 or DE-U-89 15 477 is known.
  • the strand and the ring lines connected to it can be flown through by activating the controllable valve which is located at the end of the corresponding strand in the floor.
  • the ring lines and the branch to the respective ring line or the mouth-from the respective ring line in the strand are dimensioned so that a purge flow in the ring lines in any case then results if, upon removal of water to a consumer, via a these loops fluidically downstream ring line is connected to the strand, respectively, a pressure difference between the branch and the mouth is generated, through which a purge flow is generated in the upstream ring lines.
  • a common consumer is, for example, a hand basin, a toilet, a bath or a shower into consideration.
  • leakage currents e.g. a dripping faucet viewed.
  • the flow at the consumer must be substantial, i. correspond to a normal withdrawal from the consumer.
  • a substantially continuous line extending in one floor is also referred to as a "strand", namely as a floor string. This is done for the sake of clear technical teaching in the present application.
  • a floor string in the sense of the application is referred to in the art as a distribution line.
  • the controllable valve is associated with a consumer which is connected to the ring line provided in the strand region.
  • the strand end region is considered to be the end of the strand to which the last ring line in the direction of flow is connected.
  • the controllable valve may for example comprise an indirectly controllable valve e.g. a toilet flush with cistern. Such valves are usually closed by a float.
  • the dishwasher can e.g. have a controllable trigger, so that after controlled release of the cistern water flows in a conventional manner and the valve by the float, i. indirectly after controlled actuation of the shutter is closed. As this example shows, even with an indirectly controlled valve, a flow through the strand inevitably results.
  • controllable valve is provided at the strand end and connects the strand with a connecting line.
  • the controllable valve By activating the controllable valve provided at the end of the strand, the strand is flowed through and in this case preferably all the ring lines which are connected via the strand are flushed through.
  • one controllable valve can be provided on each strand end. By simultaneous or offset driving the controllable valves, these strands can flow through simultaneously or offset in time, this longer exchanged stagnant water in the strand and the associated loops and replaced by fresh water.
  • a controllable for example, motorized flush valve to equip
  • the flushing of the drinking water system can be limited to those areas in which due to different uses compared to other areas, the water provided over the area has stood for a long time.
  • each controllable valve can be controlled in different ways to allow a cyclic, possibly alone demand-dependent flushing of or all strands.
  • each controllable valve is time-controlled, for example, by a battery-operated time module which is provided directly on the controllable valve. Such a configuration can dispense with all cabling for central control of the controllable valves.
  • control the controllable valves via a central control unit.
  • the past occupancy, for example, of a hotel in the targeted control of the valves can be considered by the operator, only to such Rinse through strands that are likely to be contaminated due to inadequate use.
  • the exchange of potentially contaminated water from the drinking water system can be done in this preferred embodiment with careful use of water.
  • a flow meter and / or temperature sensor can be provided at the end of each individual strand, by means of which, for example, the actual removal via the last ring line in the direction of flow and / or the water temperature in the state are ascertained. Should this removal be at an insufficient level, the central controller will open the controllable valve associated with that string for purging.
  • Any temperature sensors may vary the cycles of rinses. These temperature sensors can reduce flushing intervals at high temperatures, such as in spa areas or in the summer months. The temperature sensors can determine current measured temperature values in the area of the drinking or service water system and compare them with given values for supercritical temperatures. In very cold temperatures can be omitted by appropriate signals of the temperature sensors flushing for a long time.
  • each strand for each connected thereto ring lines to a connection fitting, which is designed in the manner of a throttle and which has the mouth for the associated ring line.
  • the connection fitting with throttle function of the line pressure is reduced in the region of the mouth of the loop, whereby the flushing flow is effected in the associated ring line in flow in the strand.
  • the connection fitting with throttle for the mouth of the ring line is integrally formed with a further pipe section, which realizes the branch of the respective ring line of the strand.
  • the strand then has to each arranged on this strand ring line a one-piece fitting, which forms a branch and an orifice for the associated ring line.
  • the branch and the mouth realizing valve is realized as a unitary Ring effets Suitearmatur.
  • a distance in the extension direction of the strand of less than 0.3 m.
  • each full-flow shut-off valves between the branch and the mouth of a single loop on the strand and the associated ring line.
  • These shut-off valves should preferably be free of dead space.
  • the full-flow shut-off valve On a forced flow through a pump installed in the drinking water system for flushing the individual loops or the strand should be dispensed with, and so it is preferable to form the full-flow shut-off valve as a ball valve, preferably with a flow diameter which is approximately the Flow diameter of the loop corresponds.
  • the low, generated by the full flow shut-off valves pressure loss across the valves allows a relatively high flow even at low pressure difference between the branch and the mouth of the respective loop.
  • Fig. 1 and 2 shown embodiment illustrates a drinking water installation on the example of a hotel or a hospital.
  • a cold water line 2 On a floor schematically shown runs a cold water line 2 and parallel thereto, a hot water pipe 4 and a hot water circulation pipe 6 is provided.
  • the hot water circulation pipe leads in a manner not shown, but generally known manner each individual wet cell 8.
  • Each wet cell 8 also has a ring line 10 for cold water, which is connected to the cold water line 2 each.
  • Each loop 10 has a plurality of consumers 12, which in the embodiment in the Fig. 1 and 2 are indicated schematically by a dot.
  • the removal point 12a-d are connected in series in the ring line 10.
  • the ring line 10 goes via a branch 14 from the cold water strand 2 and flows through an orifice 16 in this strand 2 a.
  • the branch 14 of each individual ring line is upstream of the mouth 16 in the direction of flow (arrow S in the cold water line 2).
  • From the corridor or the respective wet cell 8 are available in the loop 10 ball valves as full flow shut-off valves 18a, 18b provided, through which the connected thereto ring line 10 can be shut off from the cold water strand 2, for example, perform assembly work on the corresponding loop 10.
  • valves 18, 20 are dead-space-free valves that meet the legal requirements that are placed on valves that are installed in drinking water systems.
  • the valves comply with the European standard EN 13828 and the certification guideline according to DVGW worksheet W 570.
  • the valves 18, 20 are provided as flush valves.
  • Fig. 3 cold water pipes of a drinking water system are shown in a multi-storey house, for example a hospital.
  • each single floor can water pipes according to the representations in the Fig. 1 and 2 be misplaced.
  • This in Fig. 3 shown cold water line system has a transfer point 22 from the public drinking water supply network, extending in the vertical direction riser 24, from which in each floor a horizontally extending floor string 2 goes off, extending in the vertical connecting line 26, the interposition of a controllable valve 28 respectively to the individual floor strands 2 is connected and leads via a likewise controllable flush valve 30 to a discharge point 32 for used water to the public sewage disposal network.
  • the individual cold water floor strands 2 run in a horizontal direction and one above the other.
  • On each floor is a strand 2 intended.
  • each strand 2 has six ring lines 10, which depart via branches 14 and mouths 16 of the individual strands 2 and open into them.
  • Fig. 4 shown third embodiment, several laid in the vertical direction riser strings 2.1 to 2.4 are provided.
  • shut-off valves 33 At the front end in the flow direction of the respective strands 2 are shut-off valves 33, which are provided between the individual strands 2.1 to 2.3 and a horizontal distribution line.
  • the individual riser strands 2.1 to 2.4 enforce four superimposed floors in the embodiment shown.
  • only a single wet cell 8 is shown schematically.
  • all ring lines 10 are shown schematically.
  • the underlying wet cells with the associated loops are not shown.
  • the corresponding embodiment is indicated only by the mouth 16 provided on the floor.
  • the controllable valves 28 At the end of the three left branches 2.1 to 2.3 are the controllable valves 28.
  • valves 28 are provided between the individual strands 2.1 to 2.3 and a transverse line 36, whose distal end is connected to the last strand 2.4, which a falling in the vertical direction Flow leads and has at its end the purge valve 30, which leads to the discharge point.
  • Fig. 5 shown fourth embodiment of the present invention horizontally laid parallel floor strands 2 are provided, which are looped through. Accordingly, located at the end of each strand 2 a riser 35, which leads to the next floor strand 2 and is connected to the upstream end of the overlying floor strand 2 in the flow direction.
  • the uppermost strand 2.4 terminates in a sewer line 26 provided with a purge valve 30 leading to the spent water discharge point 32.
  • this flush valve 30 is located in a basement. However, it can be provided at any point behind the last loop 10 of the uppermost strand 2.4.
  • a cold water circulation system with two parallel riser strands 2 is shown. Each individual riser 2 supplies per Floor two opposite wet cells 8 with cold water.
  • the downstream end of the first, in Fig. 6 left strand 2.1 is connected via a transverse line 36 with the front end in the flow direction of the second right strand 2.2.
  • the second riser 2.2 opens into a controllable flush valve 30, which leads to a discharge point 32 for spent water to the sewer.
  • a tee is provided which leads to a circulation line 38 which comprises a pump 40 and a biological elimination unit 42 and connected via a further T-piece to the upstream end of the first riser string 2.1 is.
  • the circulation line 38 can be closed by controllable control valves, for example.
  • controllable control valves for example.
  • the in Fig. 6 illustrated embodiment provided cold water from the transfer point 22 via the first riser 2.1, the transverse line 36 and through the second riser 2.2. If the flow is insufficient, the flushing valve 30 can be opened and any cold water in the piping system can be discharged to the sewage system.
  • the pump 40 In the case of heavy soiling, it is possible to guide the water which is intrinsically in the line system by operating the pump 40 through the biological elimination unit 42 and to treat it there. Thereafter, the treated water can be returned to the system, but preferably discharged after opening the purge valve 30 via the sewer network.
  • Fig. 7 schematically shows the connection of each ring line 10 shown schematically in the previous embodiments to the associated strand 2.
  • Branch 14 and mouth 16 are provided on a uniform Ring Arthurs Seriesarmatur 44, which is designed as a branch and connection fitting.
  • a branch piece 46 extends transversely to the direction of extension of the strand 2 from the ring-line flushing fitting 44.
  • This branch pipe 46 is connected to the ring line 10.
  • the rear end of the ring line 10 in the direction of flow is connected to a likewise extending transversely to the extension of the strand 2 return pipe 48.
  • This return pipe 48 opens in the narrowed cross-section of a throttle 50, which is provided at the downstream end of the Ring Arthurs Seriesarmatur 44, or immediately thereafter.
  • the branch pipe 46 and the return pipe 48 are spaced less than 30 cm apart.
  • the throttle 50 is designed such that between the branch 14 and the mouth 16 a Pressure difference of about 20 to 50 mbar is set when, for example, provided at the respective end of the corresponding strand 2 valve 28 is operated for flushing the strand or a downstream sampling point. This pressure difference is sufficient to produce within the respective ring line 10 a circulating flushing flow '.
  • a velocity of the flow S in the strand of about 1.5 m / second is assumed.
  • the orifice 16, the branch 14 and the throttle 50 are designed such that approximately 10% of the flow S in the strand as loop flow R flush the respective ring line 10, whereas about 90% as the main flow H continue the line flush and in the throttle 50th be throttled
  • the individual valves 28 can be controlled, for example, by a central control.
  • the valves 28.1 to 28.4 are each first opened and closed in order to flush the respective ring lines in the strands 2.1 to 2.4 in the respective areas in succession.
  • the flush valve 30 remains open in such a procedure, so that any contaminated water from the individual strands 2.1 to 2.4 can be discharged directly into the sewer system.
  • the individual valves 28 can optionally also be dispensed with and all the strands 2.1 to 2.4 can be purged solely by opening the flushing valve 30.
  • the in Fig. 3 The embodiment shown, however, is based on the finding that safe flushing can be ensured for each individual area solely by effectively shutting off and opening the individual strands 2.1 to 2.4.
  • the individual vertical riser strands can be flushed in the same way.
  • the right riser string 2.4 is flowed through and purged with each flush, which leads to the discharge point 32.
  • Fig. 7 schematically illustrated training of branch 14 and mouth 16 leads each rinse of a single strand at least to a purge flow within the ring lines 10 of the associated strand 2.
  • the design of branch 14, mouth 16 and throttle 50 is carried out to each individual ring line 10 of the system preferably in such a way that a targeted removal at a removal point 12, which is arranged on a downstream in the flow direction of the ring line, to a scavenging flow upstream of the ring lines in the direction of flow 10.
  • a targeted removal at a removal point 12 which is arranged on a downstream in the flow direction of the ring line
  • Fig. 4 shown third embodiment of the invention. If this is, for example, a hotel in which only the upper floor is occupied, it can be achieved by temporarily occupying all rooms in the top floor flushing the respectively arranged under the rooms ring lines 10 of the underlying room.
  • the throttle is designed as a nozzle with fixed nozzle cross-sections and transitions.
  • the throttle adjustable it may be preferable to make the throttle adjustable.
  • the adjustment of the throttle should preferably be done automatically.
  • Such a controllable throttle should preferably be connected to the central control unit. With such controllable throttles, for example, a hydraulic balancing between individual ring lines 10 or individual strands 2 can be achieved.
  • the return line flush valve 44 shown schematically in the embodiments may also include the full-flow shut-off valves to minimize the assembly effort in the realization of the drinking water system.
  • the formation of such a uniform fitting significantly reduces the assembly effort, since only at four points of the strand or the associated ring line must be connected to the valve.

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Description

Die folgende Erfindung betrifft ein Trinkwassersystem mit einer Übergabestelle aus einem öffentlichen Trinkwasser-Versorgungsnetz und mit wenigstens einem Stockwerks- bzw. Steigrohrstrang sowie mehreren in Erstreckungsrichtung des Stranges hintereinander angeordneten und jeweils zu wenigstens einer Entnahmestelle führenden Leitungen, die von dem Strang abgehen.The following invention relates to a drinking water system with a transfer point from a public drinking water supply network and at least one floor or riser and several in the extension direction of the strand arranged one behind the other and each leading to at least one withdrawal point lines that depart from the strand.

Die vorliegende Erfindung geht insbesondere von einem Wassersystem gemäß der DE-U-93 02 446 und DE-U-8 915 477 aus. DE-U-93 02 446 wird im Hinblick auf die oberbegrifflichen Merkmale von Anspruch 1 als gattungsbildend angesehen.The present invention relates in particular to a water system according to the DE-U-93 02 446 and DE-U-8 915 477 out. DE-U-93 02 446 is considered in view of the preamble features of claim 1 as generic.

Die vorliegende Erfindung betrifft insbesondere ein Trinkwassersystem in einem Gebäude. Als Stockwerksstrang im Sinne der Erfindung wird insbesondere ein horizontal verlaufendes Rohr verstanden, welches eine Gruppe oder sämtliche Zimmer eines Stockwerks, beispielsweise eines Hotels oder eines Krankenhauses mit Trinkwasser versorgt. Ein Steigrohr verbindet verschiedene Stockwerke eines Gebäudes miteinander und erstreckt sich üblicherweise ausschließlich in der Vertikalen. Von dem Steigrohrstrang gehen Leitungen ab, die üblicherweise übereinander angeordnete Nasszellen des Gebäudes mit Trink- oder Brauchwasser versorgen. Die vorliegende Erfindung kann als Kaltwassersystem ausgebildet-sein; denkbar ist aber auch die Ausbildung als Warmwassersystem. Dabei will die Erfindung vornehmlich ein entsprechendes Trinkwassersystem ohne permanente Zirkulation angeben.The present invention relates in particular to a drinking water system in a building. In the context of the invention, floor ducting is understood in particular to mean a horizontally extending pipe which supplies a group or all rooms of a floor, for example a hotel or a hospital, with drinking water. A riser connects different floors of a building with each other and usually extends only in the vertical. From the riser pipe go from lines that usually supply superimposed wet cells of the building with drinking or service water. The present invention may be configured as a cold water system; but also conceivable is the training as a hot water system. The invention primarily wants to specify a corresponding drinking water system without permanent circulation.

Bei den obigen Systemen in einem Gebäude besteht das Problem, dass bei fehlender Entnahme von Trinkwasser an einem Verbraucher das Wasser in der Leitung stagniert. Wird beispielsweise an einem in Strömungsrichtung vorderen Verbraucher des Stranges Wasser entnommen, so wird lediglich der zu diesem vorderen Bereich führende Leitungsabschnitt des Wassersystems durchströmt. Ähnlich verhält es sich bei einem Steigrohrstrang, wenn lediglich in einem unteren Geschoß Wasser entnommen wird. Das in dem restlichen Abschnitt des Stranges stehende Wasser läuft Gefahr, zu verkeimen.The problem with the above systems in a building is that if there is no drinking water at a consumer, the water in the line stagnates. If, for example, water is taken from a front consumer in the flow direction, only the line section of the water system leading to this front region is flowed through. The situation is similar for a riser pipe, if only in a lower floor water is removed. The water in the rest of the strand is in danger of becoming contaminated.

Der vorliegenden Erfindung liegt das Problem zugrunde, ein Trinkwassersystem anzugeben, welches einen möglichst hygienischen Betrieb sicherstellt und mit welchem dem Risiko einer Verkeimung wirksam begegnet werden kann. Ferner will die vorliegende Erfindung ein Verfahren zum Betreiben eines Trinkwassersystems angeben, durch welches dem Risiko einer Verkeimung des Trink wassersystems wirkungsvoll begegnet werden kann.The present invention is based on the problem to provide a drinking water system, which ensures the most hygienic operation and with which the risk of contamination can be effectively countered. Furthermore, the present invention will provide a method for operating a drinking water system, through which the risk of contamination of the drinking water system can be effectively countered.

Zur Lösung des Problems wird mit der vorliegenden Erfindung ein Wassersystem gemäß Anspruch 1 angegeben.To solve the problem, the present invention provides a water system according to claim 1.

Gemäß der vorliegenden Erfindung sind die Ringleitungen und deren Abzweig bzw. Mündung am Strang derart ausgebildet, dass bei Entnahme von Trink-oder Brauchwasser an einem an dem Strang angeschlossenen Verbraucher durch eine Strömung in dem Strang zwischen dem Abzweig und der Mündung oder den Ringleitungen des Stranges eine Druckdifferenz erzeugt wird, durch welche in der dem Verbraucher zugeordneten und der oder den in Strömungsrichtung davor liegenden Ringleitungen eine Spülströmung erzeugt wird. Die Strömung in dem Trink wassersystem erfolgt hierbei allein aufgrund der Differenz des Drucks zwischen der Übergabestelle und der Abgabestelle bzw. der Entnahmestelle. Mit anderen Worten schlägt die vorliegende Erfindung ein passives Trinkwassersystem vor, welches ohne Pumpe auskommt, die für eine Strömung in dem System sorgt. Die Strömung in dem System wird allein durch das Druckpotenzial bewirkt, welches aufgrund des Überdrucks an der Übergabestelle gegenüber dem Druck an einer Entnahmestelle anliegt. Treibende Kraft für eine Strömung innerhalb des Trinkwassersystems nach dem nebengeordneten Aspekt der vorliegenden Erfindung ist danach allein der Überdruck in dem Leitungssystem, der über das öffentliche Netz in diesem anliegt. Das erfindungsgemäße Trinkwassersystem ist danach so ausgestaltet, dass die einer Ringleitung mit Verbraucher, der zur Wasserentnahme benutzt wird, vorgelagerten Ringleitungen aufgrund der Druckdifferenz in dem Strang mit einer Spülströmung durchströmt werden. Die Druckdifferenz wird dabei durch die in dem Strang erzeugte Strömung zu dem Verbraucher bewirkt. Im Fall eines Hotels muss lediglich das in Strömungsrichtung letzte Hotelzimmer mit zugeordneter Nasszelle belegt werden, um durch Wasserentnahme an diesem Zimmer dem gesamten Stockwerksstrang der zugeordneten Hoteletage zu durchströmen. Auf diese Weise kann wirkungsvoll eine Verkeimung sämtlicher an dem Strang angeordneter Ringleitungen vermindert werden.According to the present invention, the ring lines and their branch or mouth are formed on the strand such that when removing drinking or service water to a consumer connected to the strand by a flow in the strand between the branch and the mouth or the loops of the strand a pressure difference is generated, by which in the consumer assigned and the one or more upstream in the flow direction a loop purge flow is generated. The flow in the drinking water system takes place here solely due to the difference in pressure between the transfer point and the delivery point or the sampling point. In other words, the present invention proposes a passive drinking water system that does not require a pump to provide flow in the system. The flow in the system is effected solely by the pressure potential which, due to the overpressure at the transfer point, rests against the pressure at a removal point. The driving force for a flow within the drinking water system according to the independent aspect of the present invention is thereafter only the overpressure in the line system, which is applied to the public network in this. The drinking water system according to the invention is then designed so that a ring line with consumer, which is used for water extraction, upstream ring lines are flowed through because of the pressure difference in the strand with a purge flow. The pressure difference is effected by the flow generated in the strand to the consumer. In the case of a hotel, only the last hotel room in the direction of flow must be assigned an assigned sanitary unit in order to flow through the water in this room through the entire floor space of the assigned hotel floor. In this way, a microbial contamination of all arranged on the strand loops can be effectively reduced.

Mit der vorliegenden Erfindung soll ein Trinkwassersystem angegeben werden, welches auf einfache Weise sicherstellt, dass ein Verbraucher jeweils frisches Wasser an einer Entnahmestelle zapfen kann. Nach der vorliegenden Erfindung ist hierzu ein steuerbares Ventil, d.h. ein motorgetriebenes Ventil vorgesehen, welches für eine Durchströmung und somit einen Austausch von verbrauchtem Wasser gegenüber frischem Wasser sorgen kann. Es geht hier auch darum, beispielsweise frisches Kaltwasser an den Entnahmestellen bereitzustellen. Dabei will die vorliegende Erfindung ein möglichst einfach aufgebautes Trinkwassersystem angeben. Dieses soll ohne eine Zirkulationspumpe oder dergleichen auskommen. Die Strömung in dem Trinkwassersystem wird dementsprechend allein durch die Differenz zwischen dem Druck an der Übergabestelle und der dem Druck an der Entnahmestelle bewirkt. Dies bedeutet, dass das erfindungsgemäße Trinkwassertem ein passives System ist, bei dem eine Zirkulationspumpe fehlt, die für eine ständige Durchströmung sorgt. In Verbindung mit einem steuerbaren Ventil kann zwar eine entsprechende Zirkulationspumpe Teil des Trinkwassersystems sein. Mit der vorliegenden Erfindung soll aber insbesondere durch die Abgabe an der Abgabestelle oder eine Entnahme an der Entnahmestelle getrieben durch den relativen Überdruck an der Einspeisestelle, d.h. der Übergabestelle von dem öffentlichen Netz in das Trinkwassersystem ein Austausch des Wassers in dem System stattfinden. Die vorliegende Erfindung will dementsprechend vorzugsweise eine Reinigung des in dem System enthaltenen Wassers durch Zirkulation und Hindurchleiten durch eine Wasseraufbereitung vermeiden, wie dies aus der DE-U-93 02 446 oder DE-U-89 15 477 bekannt ist. Bei diesem vorbekannten Stand der Technik wird zwar durch einen Venturi-Effekt das Durchströmen von Ringleitungen bewirkt. Die Durchströmung des gesamten Trinkwassersystems erfolgt aber bei diesem Stand der Technik über eine Pumpe, die das in dem System enthaltene Wasser zirkuliert und in einer gesonderten Aufbereitungsanlage aufbereitet, insbesondere keimfrei macht. Dementsprechend werden die im vorbekannten Stand der Technik beschrienen Leitungssysteme im Sinne der vorliegenden Erfindung als aktive Systeme mit Zirkulationspumpe und aktiver Wasseraufbereitungsanlage verstanden, wohingegen die vorliegende Erfindung ein passives System vorschlägt, bei dem auf eine Pumpe und/oder eine Wasseraufbereitungsanlage verzichtet werden soll. Dies bedeutet jedoch nicht, dass ein Trink wassersystem mit einer Pumpe oder einer Wasseraufbereitungsanlage zwangsläufig aus dem Schutzbereich des Patentes herausfällt, sofern dieses von dem Gegenstand von Anspruch 1 Gebrauch macht.With the present invention, a drinking water system is to be specified, which ensures in a simple manner that a consumer can each tap fresh water at a sampling point. According to the present invention, for this purpose, a controllable valve, ie a motor-driven valve is provided, which can provide a flow and thus an exchange of spent water with fresh water. It is also about providing, for example, fresh cold water at the sampling points. The present invention wants to specify a drinking water system that is as simple as possible. This should do without a circulation pump or the like. The flow in the drinking water system is accordingly effected solely by the difference between the pressure at the transfer point and the pressure at the removal point. This means that the drinking water tank according to the invention is a passive system in which a circulation pump is missing, which ensures a constant flow. Although a corresponding circulation pump can be part of the drinking water system in conjunction with a controllable valve. With the present invention, but in particular by the delivery at the delivery point or a removal at the sampling point driven by the relative pressure at the feed point, ie the transfer point from the public network into the drinking water system, an exchange of water in the system take place. Accordingly, the present invention desirably seeks to prevent the water contained in the system from being purified by circulating and passing through a water treatment, as disclosed in US Pat DE-U-93 02 446 or DE-U-89 15 477 is known. In this prior art, although the flow of ring lines is effected by a Venturi effect. The flow through the entire drinking water system but takes place in this prior art via a pump which circulates the water contained in the system and processed in a separate treatment plant, in particular germ-free. Accordingly, in the context of the present invention, the piping systems described in the prior art are understood as active systems with circulation pump and active water treatment plant, whereas the present invention proposes a passive system in which to dispense with a pump and / or a water treatment plant. However, this does not mean that a drinking water system with a pump or a water treatment plant necessarily out of the scope of the patent if it makes use of the subject-matter of claim 1.

Sollte bei einem Hotel über längere Zeit eine ganze Etage unbelegt bleiben, so können durch Ansteuern des steuerbaren Ventils, welches sich am Ende des entsprechenden Stranges in dem Stockwerk befindet, der Strang sowie die daran angeschlossenen Ringleitungen durchströmt werden.Should a hotel remain unoccupied for an extended period of time, the strand and the ring lines connected to it can be flown through by activating the controllable valve which is located at the end of the corresponding strand in the floor.

Die Ringleitungen und der Abzweig zu der jeweiligen Ringleitung bzw. die Mündung-von der jeweiligen Ringleitung in den Strang sind so dimensioniert, dass sich eine Spülströmung in den Ringleitungen jedenfalls dann ergibt, wenn bei Entnahme von Wasser an einem Verbraucher, der über eine diesen Ringleitungen strömungstechnisch nachgeordnete Ringleitung an dem Strang angeschlossen ist, jeweils eine Druckdifferenz zwischen Abzweig und Mündung erzeugt wird, durch welche eine Spülströmung in den vorgelagerten Ringleitungen erzeugt wird. Als üblicher Verbraucher kommt beispielsweise ein Handwaschbecken, eine Toilette, eine Badewanne oder auch eine Dusche in Betracht. Als nicht ausreichend werden üblicherweise Leckageströmungen, also z.B. ein tropfender Wasserhahn angesehen. Die Strömung an dem Verbraucher muss substanziell sein, d.h. einer üblicher Entnahme an dem Verbraucher entsprechen. Es ist derzeit daran gedacht, aufgrund der Druckdifferenz etwa 10 % des Volumenstroms durch den Strang in die jeweilige Ringleitung abzuleiten. Eine solche Strömungsmenge wird als ausreichend angesehen, die Ringleitung hinreichend zu durchströmen und hierbei das dort stagnierende Wasser auszutauschen. Durch die Ringleitung wird das in dem Trink wassersystem geführte Wasser sehr nahe an die jeweiligen an der Ringleitung angeschlossenen Verbraucher herangeführt, so dass nahezu sämtliches in der Ringleitung stagnierendes Wasser ausgetauscht wird.The ring lines and the branch to the respective ring line or the mouth-from the respective ring line in the strand are dimensioned so that a purge flow in the ring lines in any case then results if, upon removal of water to a consumer, via a these loops fluidically downstream ring line is connected to the strand, respectively, a pressure difference between the branch and the mouth is generated, through which a purge flow is generated in the upstream ring lines. As a common consumer is, for example, a hand basin, a toilet, a bath or a shower into consideration. As a rule, leakage currents, e.g. a dripping faucet viewed. The flow at the consumer must be substantial, i. correspond to a normal withdrawal from the consumer. It is currently thought to derive due to the pressure difference about 10% of the volume flow through the strand in the respective loop. Such a flow rate is considered sufficient to sufficiently flow through the loop and thereby replace the stagnant water there. Through the loop, the guided in the drinking water system water is brought very close to the respective consumers connected to the ring line, so that almost all stagnant in the loop water is exchanged.

In der vorliegenden Anmeldung wird auch eine sich in einem Stockwerk erstreckende, im Wesentlichen durchgehende Leitung als "Strang" bezeichnet, nämlich als Stockwerksstrang. Dies geschieht zu Gründen einer klaren technischen Lehre in der vorliegenden Anmeldung. Ein solcher Stockwerksstrang im Sinne der Anmeldung wird in der Fachwelt als Verteilleitung bezeichnet.In the present application, a substantially continuous line extending in one floor is also referred to as a "strand", namely as a floor string. This is done for the sake of clear technical teaching in the present application. Such a floor string in the sense of the application is referred to in the art as a distribution line.

Gemäß einer bevorzugten Weiterbildung der vorliegenden Erfindung ist das steuerbare Ventil einem Verbraucher zugeordnet, der an der im Strangendbereich vorgesehenen Ringleitung angeschlossen ist. Als Strangendbereich wird insbesondere das Ende des Stranges angesehen, an welcher die in Strömungsrichtung letzte Ringleitung angeschlossen ist. Das steuerbare Ventil kann beispielsweise ein mittelbar steuerbares Ventil z.B. einer Toilettenspülung mit Spülkasten sein. Solche Ventile werden üblicherweise über einen Schwimmer geschlossen. Der Spüler kann z.B. einen ansteuerbaren Auslöser haben, so dass nach angesteuertem Auslösen des Spülkastens Wasser in an sich bekannter Weise abfließt und das Ventil durch den Schwimmer, d.h. mittelbar nach gesteuerter Betätigung des Auslösers verschlossen wird. Wie dieses Beispiel zeigt ergibt sich auch bei einem mittelbar gesteuerten Ventil zwangsläufig eine Durchströmung des Stranges. Bei diesem Beispiel wird allerdings nicht das Ventil direkt, sondern ein die Betätigung des Ventils mittelbar bewirkender Auslösehebel des Toilettenkastens angetrieben. Hierauf fließt Wasser zunächst ab. Danach wird das die Strömung in dem Strang bewirkende Ventil zum Befüllen des Spülkastens geöffnet. Die zuvor beschriebene Äusführungsform erleichtert den konstruktiven Aufwand zur Verwirklichung des Brauch- oder Abwassersystems und erhöht die Sicherheit der Benutzer, da das eventuell verkeimte Wasser über das Abwasserrohr der Toilette in das Abwassersystem abgeführt wird. Daher eignet es sich besonders bei Wohnungsleerstand über längere Zeit zur Vermeidung von Verkeimung des Trinkwassers.According to a preferred development of the present invention, the controllable valve is associated with a consumer which is connected to the ring line provided in the strand region. In particular, the strand end region is considered to be the end of the strand to which the last ring line in the direction of flow is connected. The controllable valve may for example comprise an indirectly controllable valve e.g. a toilet flush with cistern. Such valves are usually closed by a float. The dishwasher can e.g. have a controllable trigger, so that after controlled release of the cistern water flows in a conventional manner and the valve by the float, i. indirectly after controlled actuation of the shutter is closed. As this example shows, even with an indirectly controlled valve, a flow through the strand inevitably results. In this example, however, not the valve is driven directly, but a actuation of the valve indirectly causing trigger lever of the toilet box. At this point, water initially flows off. Thereafter, the valve causing the flow in the strand to open the cistern is opened. The Äusführungsform described above facilitates the design effort to achieve the utility or sewage system and increases the safety of the user, since the possibly contaminated water is discharged through the sewer pipe of the toilet in the sewer system. Therefore, it is particularly suitable for housing vacancy over a long period of time to prevent contamination of the drinking water.

Bei einer weiteren bevorzugten Ausgestaltung, ist das steuerbare Ventil am Strangende vorgesehen und verbindet den Strang mit einer Verbindungsleitung. Durch Betätigungen des am Strangende vorgesehenen steuerbaren Ventils wird der Strang durchströmt und hierbei vorzugsweise sämtliche Ringleitungen, die über den Strang angeschlossen werden, durchspült. Sind mehrere Stränge im Falle von Stockwerkssträngen übereinander bzw. im Fall von Steigrohrsträngen nebeneinander vorgesehen, kann an jedem Strangende jeweils ein steuerbares Ventil vorgesehen sein. Durch gleichzeitiges oder versetztes Ansteuern der steuerbaren Ventile können diese Stränge simultan oder zeitlich versetzt durchströmt, hierbei länger stagnierendes Wasser in dem Strang und den zugeordneten Ringleitungen ausgetauscht und durch frisches Wasser ersetzt werden. Für eine zentral gesteuerte Spülung wird gemäß einer bevorzugten Weiterbildung der vorliegenden Erfindung vorgeschlagen, eine Abwasserleitung an ihrem in Strömungsrichtung hinteren, dem Anschluss aller Stränge folgenden Ende mit einem steuerbaren, beispielsweise motorbetriebenen Spülventil auszustatten, das zu der Übergabe zu dem öffentlichen Abwasserentsorgungsnetz führt. Mit einem solchen Spülventil ist es möglich, durch einmalige Betätigung eines einzigen Ventils das gesamte Brauch- oder Abwassersystem zu durchspülen. Sofern am Ende der jeweiligen Stränge darüber hinaus einzelne steuerbare Ventile vorgesehen sind, kann die Spülung des Trinkwassersystems auf solche Bereiche beschränkt werden, in denen aufgrund unterschiedlicher Nutzungen gegenüber anderen Bereichen das über den Bereich bereitgestellte Wasser längere Zeit gestanden hat.In a further preferred embodiment, the controllable valve is provided at the strand end and connects the strand with a connecting line. By activating the controllable valve provided at the end of the strand, the strand is flowed through and in this case preferably all the ring lines which are connected via the strand are flushed through. If several strands are provided one above the other in the case of storey strands or side by side in the case of riser strands, one controllable valve can be provided on each strand end. By simultaneous or offset driving the controllable valves, these strands can flow through simultaneously or offset in time, this longer exchanged stagnant water in the strand and the associated loops and replaced by fresh water. For a centrally controlled flush is proposed according to a preferred embodiment of the present invention, a sewer at its rear end in the flow direction, the connection of all strands end with a controllable, for example, motorized flush valve to equip, which leads to the transfer to the public sewage disposal network. With such a purge valve, it is possible to flush through the entire service or sewage system by a single operation of a single valve. If, at the end of the respective strands beyond individual controllable valves are provided, the flushing of the drinking water system can be limited to those areas in which due to different uses compared to other areas, the water provided over the area has stood for a long time.

Eine zentrale Durchspülung sämtlicher Stränge wird auf einfache Weise dadurch ermöglicht, dass sämtliche Stränge durchgeschleift sind, d.h. sämtliche Stränge durch quer zu den Strängen verlaufende Leitungen miteinander verbunden sind. Durch geeignete Nutzungskonzepte, insbesondere durch Aktivierung von Abnehmem in dem in Strömungsrichtung hintersten Strang ist es möglich, die jeweils vorgelagerten Stränge und vorzugsweise die daran angeschlossenen Ringleitungen durch Verbrauch bereits an einem Verbraucher die notwendige Durchspülung des Trinkwassersystems zu erreichen. Wenn beispielsweise bei einem lediglich saisonal benutzten Hotel ein einziges steuerbares Ventil am Ende durchgeschliffener Stränge vorgesehen ist, kann durch Betätigen des steuerbaren Ventils das gesamte Trinkwassersystem in dem Hotel durchströmt werden.Central rinsing of all strands is easily accomplished by looping through all the strands, i. All strands are connected by transversely to the strands extending lines. By suitable utilization concepts, in particular by activation of doffer in the downstreammost strand, it is possible to reach the respective upstream strands and preferably the connected ring lines by consumption already at a consumer the necessary flushing of the drinking water system. If, for example, in a hotel used only seasonally, a single controllable valve at the end of durchgeschliffener strands is provided, can be flowed through by operating the controllable valve, the entire drinking water system in the hotel.

Das bzw. die steuerbaren Ventile können auf unterschiedliche Weise gesteuert werden, um eine zyklische, gegebenenfalls allein bedarfsabhängige Durchspülung des bzw. sämtlicher Stränge zu ermöglichen. Bei einer besonders einfachen Ausgestaltung ist jedes steuerbare Ventil zeitgesteuert, beispielsweise durch ein batteriebetriebenes Zeitmodul, welches unmittelbar an dem steuerbaren Ventil vorgesehen ist. Eine solche Ausgestaltung kann auf sämtlichen Verkabelungsaufwand zur zentralen Steuerung der steuerbaren Ventile verzichten.The controllable valve or valves can be controlled in different ways to allow a cyclic, possibly alone demand-dependent flushing of or all strands. In a particularly simple embodiment, each controllable valve is time-controlled, for example, by a battery-operated time module which is provided directly on the controllable valve. Such a configuration can dispense with all cabling for central control of the controllable valves.

Im Hinblick auf eine bedarfsorientierte Spülung einzelner oder aller Stränge ist es jedoch zu bevorzugen, die steuerbaren Ventile über eine zentrale Steuereinheit anzusteuern. In dieser Steuereinheit kann durch den Bediener die vergangene Belegung beispielsweise eines Hotels bei der gezielten Ansteuerung der Ventile in Betracht gezogen werden, um lediglich solche Stränge zu durchspülen, bei denen aufgrund unzureichender Benutzung eine Verkeimung zu befürchten ist. Der Austausch möglicherweise verkeimten Wassers aus dem Trinkwassersystem kann bei dieser bevorzugten Ausgestaltung unter schonendem Einsatz des Wassers erfolgen.With regard to a demand-oriented flushing of individual or all strands, however, it is preferable to control the controllable valves via a central control unit. In this control unit, the past occupancy, for example, of a hotel in the targeted control of the valves can be considered by the operator, only to such Rinse through strands that are likely to be contaminated due to inadequate use. The exchange of potentially contaminated water from the drinking water system can be done in this preferred embodiment with careful use of water.

Besonders zu bevorzugen ist die Weiterbildung der Erfindung, bei welcher Durchfluss- und/oder Temperatursensoren an der Trinkwassereinheit vorgesehen sind, deren Messwerte in der zentralen Steuereinheit zur Steuerung des oder der steuerbaren Ventile verarbeitet werden. So kann beispielsweise am Ende jedes einzelnen Stranges ein Durchflussmesser und/oder Temperatursensor vorgesehen sein, durch welche beispielsweise die tatsächliche Entnahme über die in Strömungsrichtung letzte Ringleitung und/oder die Wassertemperatur im Stand festgestellt werden. Sollte diese Entnahme auf einem unzureichenden Niveau liegen, wird die zentrale Steuerung das diesem Strang zugeordnete steuerbare Ventil zur Spülung öffnen. Eventuelle Temperatursensoren können die Zyklen von Spülvorgängen variieren. Diese Temperatursensoren können Spülungsintervalle bei hohen Temperaturen, beispielsweise in Wellness-Bereichen oder in den Sommermonaten verkürzen. Die Temperatursensoren können aktuelle gemessene Temperaturwerte im Bereich des Trink- oder Brauchwassersystems ermitteln und mit gegebenen Werten für überkritische Temperaturen vergleichen. Bei sehr kalten Temperaturen kann durch entsprechende Signale der Temperatursensoren eine Durchspülung auf längere Zeit unterbleiben.Particularly preferred is the development of the invention, in which flow and / or temperature sensors are provided on the drinking water unit, the measured values are processed in the central control unit for controlling the controllable or the controllable valves. Thus, for example, a flow meter and / or temperature sensor can be provided at the end of each individual strand, by means of which, for example, the actual removal via the last ring line in the direction of flow and / or the water temperature in the state are ascertained. Should this removal be at an insufficient level, the central controller will open the controllable valve associated with that string for purging. Any temperature sensors may vary the cycles of rinses. These temperature sensors can reduce flushing intervals at high temperatures, such as in spa areas or in the summer months. The temperature sensors can determine current measured temperature values in the area of the drinking or service water system and compare them with given values for supercritical temperatures. In very cold temperatures can be omitted by appropriate signals of the temperature sensors flushing for a long time.

Gemäß einer bevorzugten Weiterbildung weist jeder Strang für die jeweils hieran angeschlossenen Ringleitungen eine Anschlussarmatur auf, die nach Art einer Drossel ausgebildet ist und welche die Mündung für die zugeordnete Ringleitung aufweist. Durch die Anschlussarmatur mit Drosselfunktion wird der Leitungsdruck im Bereich der Mündung der Ringleitung herabgesetzt, wodurch die Spülströmung in der zugeordneten Ringleitung bei Strömung in dem Strang bewirkt wird. Vorzugsweise ist die Anschlussarmatur mit Drossel für die Mündung der Ringleitung einteilig mit einem weiteren Rohrabschnitt ausgebildet, der den Abzweig der jeweiligen Ringleitung von dem Strang verwirklicht. Der Strang hat danach zu jeder an diesen Strang angeordneten Ringleitung eine einteilige Armatur, welche einen Abzweig und eine Mündung für die zugeordnete Ringleitung ausbildet. Durch diese Ausgestaltung kann der Montageaufwand zur Verwirklichung des erfindungsgemäßen Trinkwassersystems vermindert werden.According to a preferred development, each strand for each connected thereto ring lines to a connection fitting, which is designed in the manner of a throttle and which has the mouth for the associated ring line. By the connection fitting with throttle function of the line pressure is reduced in the region of the mouth of the loop, whereby the flushing flow is effected in the associated ring line in flow in the strand. Preferably, the connection fitting with throttle for the mouth of the ring line is integrally formed with a further pipe section, which realizes the branch of the respective ring line of the strand. The strand then has to each arranged on this strand ring line a one-piece fitting, which forms a branch and an orifice for the associated ring line. By this configuration, the assembly costs for the realization of the drinking water system according to the invention can be reduced.

Die vorstehend erwähnte, den Abzweig und die Mündung verwirklichende Armatur ist als einheitliche Ringleitungsspülarmatur verwirklicht. Vorzugsweise haben unabhängig von der konkreten Ausgestaltung von Abzweig und Mündung der Abzweig und die Mündung einer einzigen Ringleitung einen Abstand in Erstreckungsrichtung des Stranges von weniger als 0,3 m.The above-mentioned, the branch and the mouth realizing valve is realized as a unitary Ringleitungsspülarmatur. Preferably, regardless of the specific configuration of branch and mouth of the branch and the mouth of a single loop a distance in the extension direction of the strand of less than 0.3 m.

Aus praktischen Erwägungen ist es zu bevorzugen, zwischen dem Abzweig und der Mündung einer einzigen Ringleitung am Strang und der zugeordneten Ringleitung jeweils Vollstrom-Absperrventile vorzusehen. Diese Absperrventile sollten vorzugsweise totraumfrei sein. Darüber hinaus ist es zu bevorzugen, die Absperrventile mit relativ geringer Druckdifferenz auszubilden. Nach dem der Erfindung zugrunde liegenden Konzept zur Erzeugung einer Spülströmung in der jeweiligen Ringleitung wird diese allein durch die Druckdifferenz bewirkt, die sich aufgrund der Strömung in dem Strang ergibt. Auf eine erzwungene Strömung durch eine in dem Trinkwassersystem installierte Pumpe zur Durchspülung der einzelnen Ringleitungen bzw. des Stranges sollte verzichtet werden, und so ist es zu bevorzugen, das Vollstrom-Absperrventil als Kugelventil auszubilden, und zwar vorzugsweise mit einem Strömungsdurchmesser, der in etwa dem Strömungsdurchmesser der Ringleitung entspricht. Der geringe, durch die Vollstrom-Absperrventile erzeugte Druckverlust über die Ventile erlaubt eine relativ hohe Durchströmung auch bei geringer Druckdifferenz zwischen Abzweig und Mündung der jeweiligen Ringleitung.For practical reasons, it is preferable to provide each full-flow shut-off valves between the branch and the mouth of a single loop on the strand and the associated ring line. These shut-off valves should preferably be free of dead space. In addition, it is preferable to form the shut-off valves with a relatively small pressure difference. According to the concept underlying the invention for generating a scavenging flow in the respective ring line, this is effected solely by the pressure difference which results due to the flow in the strand. On a forced flow through a pump installed in the drinking water system for flushing the individual loops or the strand should be dispensed with, and so it is preferable to form the full-flow shut-off valve as a ball valve, preferably with a flow diameter which is approximately the Flow diameter of the loop corresponds. The low, generated by the full flow shut-off valves pressure loss across the valves allows a relatively high flow even at low pressure difference between the branch and the mouth of the respective loop.

Zur Lösung des verfahrensmäßigen Aspektes der vorliegenden Erfindung wird ein Verfahren mit den Merkmalen von Anspruch 17 vorgeschlagen.To solve the procedural aspect of the present invention, a method having the features of claim 17 is proposed.

Weitere Vorteile und Einzelheiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung und einige Ausführungsbeispiele in Verbindung mit der Zeichnung. In dieser zeigen:

Fig. 1
eine schematische Ansicht eines ersten Ausführungsbeispiels eines Trinkwassersystems;
Fig. 2
eine Detailansicht einer in Fig. 1 gezeigten Nasszelle;
Fig. 3
eine schematische Darstellung eines zweiten Ausführungsbeispiels eines Trinkwassersystems;
Fig. 4
eine schematische Darstellung eines dritten Ausführungsbeispiels;
Fig. 5
eine schematische Darstellung eines vierten Ausführungsbeispiels;
Fig. 6
eine schematische Darstellung eines fünften Ausführungsbeispiels und
Fig. 7
eine schematische Darstellung eines Ausführungsbeispiels einer in dem Strang zu installierenden Ringleitungsspülarmatur.
Further advantages and details of the present invention will become apparent from the following description and some embodiments in conjunction with the drawings. In this show:
Fig. 1
a schematic view of a first embodiment of a drinking water system;
Fig. 2
a detailed view of an in Fig. 1 shown wet cell;
Fig. 3
a schematic representation of a second embodiment of a drinking water system;
Fig. 4
a schematic representation of a third embodiment;
Fig. 5
a schematic representation of a fourth embodiment;
Fig. 6
a schematic representation of a fifth embodiment and
Fig. 7
a schematic representation of an embodiment of a to be installed in the strand Ringleitungsspülarmatur.

Das in den Fig. 1 und 2 gezeigte Ausführungsbeispiel verdeutlicht eine Trinkwasserinstallation am Beispiel eines Hotels oder eines Krankenhauses. Auf einem schematisch gezeigten Stockwerk läuft ein Kaltwasserstrang 2 und parallel hierzu ist eine Warmwasserleitung 4 und eine Warmwasserzirkulationsleitung 6 vorgesehen. Die Warmwasserzirkulationsleitung führt in nicht näher dargestellter, jedoch allgemein bekannter Weise zu
jeder einzelnen Nasszelle 8. Jede Nasszelle 8 weist darüber hinaus eine Ringleitung 10 für Kaltwasser auf, die an den Kaltwasserstrang 2 jeweils angeschlossen ist. Jede Ringleitung 10 weist mehrere Verbraucher 12 auf, die bei dem Ausführungsbeispiel in den Fig. 1 und 2 mit einem Punkt schematisch gekennzeichnet sind.That in the Fig. 1 and 2 shown embodiment illustrates a drinking water installation on the example of a hotel or a hospital. On a floor schematically shown runs a cold water line 2 and parallel thereto, a hot water pipe 4 and a hot water circulation pipe 6 is provided. The hot water circulation pipe leads in a manner not shown, but generally known manner
each individual wet cell 8. Each wet cell 8 also has a ring line 10 for cold water, which is connected to the cold water line 2 each. Each loop 10 has a plurality of consumers 12, which in the embodiment in the Fig. 1 and 2 are indicated schematically by a dot.

Bei den Verbrauchern kann es sich um eine Toilette 12a, eine Dusche 12b, eine Badewanne 12c oder ein Handwaschbecken 12d handeln. Die Entnahmestelle 12a-d sind in der Ringleitung 10 in Reihe geschaltet. Die Ringleitung 10 geht über einen Abzweig 14 von dem Kaltwasserstrang 2 ab und mündet über eine Mündung 16 in diesen Strang 2 ein. Der Abzweig 14 jeder einzelnen Ringleitung ist in Strömungsrichtung (Pfeil S im Kaltwasserstrang 2 eingezeichnet) der Mündung 16 vorgelagert. Vom Flur oder der jeweiligen Nasszelle 8 zugänglich sind in der Ringleitung 10 Kugelventile als Vollstrom-Absperrventile 18a, 18b vorgesehen, durch welche die daran angeschlossene Ringleitung 10 von dem Kaltwasserstrang 2 abgesperrt werden kann, um beispielsweise Montagearbeiten an der entsprechenden Ringleitung 10 durchzuführen. An gleicher Stelle befinden sich auch die Absperrventile 20a, 20b für die Warmwasser- 4 und die Warmwasserzirkulationsleitung 6 für die jeweilige Nasszelle. Bei den Ventilen 18, 20 handelt es sich um totraumfreie Ventile, die den gesetzlichen Anforderungen genügen, die an Ventile, die in Trinkwassersystemen installiert werden, gestellt sind. Bei dem gezeigten Ausführungsbeispiel entsprechen die Ventile der europäischen Norm EN 13828 und der Zertifizierungsrichtlinie nach DVGW Arbeitsblatt W 570. Die Ventile 18, 20 sind als Unterputzventile vorgesehen.Consumers may be a toilet 12a, a shower 12b, a bathtub 12c or a hand basin 12d. The removal point 12a-d are connected in series in the ring line 10. The ring line 10 goes via a branch 14 from the cold water strand 2 and flows through an orifice 16 in this strand 2 a. The branch 14 of each individual ring line is upstream of the mouth 16 in the direction of flow (arrow S in the cold water line 2). From the corridor or the respective wet cell 8 are available in the loop 10 ball valves as full flow shut-off valves 18a, 18b provided, through which the connected thereto ring line 10 can be shut off from the cold water strand 2, for example, perform assembly work on the corresponding loop 10. At the same place are also the shut-off valves 20a, 20b for the hot water 4 and the hot water circulation line 6 for the respective wet cell. The valves 18, 20 are dead-space-free valves that meet the legal requirements that are placed on valves that are installed in drinking water systems. In the embodiment shown, the valves comply with the European standard EN 13828 and the certification guideline according to DVGW worksheet W 570. The valves 18, 20 are provided as flush valves.

In Fig. 3 sind Kaltwasserleitungen eines Trinkwassersystems in einem mehrstöckigen Haus, beispielsweise einem Krankenhaus gezeigt. In jedem einzelnen Stockwerk können Wasserleitungen gemäß den Darstellungen in den Fig. 1 und 2 verlegt sein. Das in Fig. 3 gezeigte Kaltwasserleitungssystem hat eine Übergabestelle 22 aus dem öffentlichen Trinkwasserversorgungsnetz, eine sich in vertikaler Richtung erstreckende Steigleitung 24, von welcher in jedem Stockwerk ein horizontal verlaufender Stockwerksstrang 2 abgeht, eine in der Vertikalen verlaufende Verbindungsleitung 26, die unter Zwischenschaltung eines steuerbaren Ventils 28 jeweils an die einzelnen Stockwerkstränge 2 angeschlossen ist und über ein ebenfalls steuerbares Spülventil 30 zu einer Abgabestelle 32 für verbrauchtes Wasser an das öffentliche Abwasserentsorgungsnetz führt. Die einzelnen Kaltwasserstockwerksstränge 2 verlaufen in horizontaler Richtung und übereinander. In jedem Stockwerk ist ein Strang 2 vorgesehen. Bei dem in Fig. 3 gezeigten zweiten Ausführungsbeispiel der vorliegenden Erfindung weist jeder Strang 2 sechs Ringleitungen 10 auf, die über Abzweigungen 14 und Mündungen 16 von den einzelnen Strängen 2 abgehen und in diese münden.In Fig. 3 cold water pipes of a drinking water system are shown in a multi-storey house, for example a hospital. In each single floor can water pipes according to the representations in the Fig. 1 and 2 be misplaced. This in Fig. 3 shown cold water line system has a transfer point 22 from the public drinking water supply network, extending in the vertical direction riser 24, from which in each floor a horizontally extending floor string 2 goes off, extending in the vertical connecting line 26, the interposition of a controllable valve 28 respectively to the individual floor strands 2 is connected and leads via a likewise controllable flush valve 30 to a discharge point 32 for used water to the public sewage disposal network. The individual cold water floor strands 2 run in a horizontal direction and one above the other. On each floor is a strand 2 intended. At the in Fig. 3 shown second embodiment of the present invention, each strand 2 has six ring lines 10, which depart via branches 14 and mouths 16 of the individual strands 2 and open into them.

Bei dem in Fig. 4 gezeigten dritten Ausführungsbeispiel sind mehrere in der vertikalen Richtung verlegte Steigrohrstränge 2.1 bis 2.4 vorgesehen. Am in Strömungsrichtung vorderen Ende der jeweiligen Stränge 2 befinden sich Absperrventile 33, die zwischen den einzelnen Strängen 2.1 bis 2.3 und einer horizontalen Verteilleitung vorgesehen sind. Die einzelnen Steigrohrstränge 2.1 bis 2.4 durchsetzen bei dem gezeigten Ausführungsbeispiel vier übereinanderliegende Stockwerke. Aus Gründen vereinfachter Darstellung ist lediglich eine einzige Nasszelle 8 schematisch dargestellt. Im oberen Stockwerk sind sämtliche Ringleitungen 10 schematisch wiedergegeben. Die darunterliegenden Nasszellen mit den dazugehörigen Ringleitungen sind nicht gezeigt. Die entsprechende Ausgestaltung ist lediglich durch die am Stockwerk vorgesehene Mündung 16 angedeutet. Am Ende der drei linken Stränge 2.1 bis 2.3 befinden sich die steuerbaren Ventile 28. Diese Ventile 28 sind zwischen den einzelnen Strängen 2.1 bis 2.3 und einer Querleitung 36 vorgesehen, deren strömungsfernes Ende an den letzten Strang 2.4 angeschlossen ist, welcher eine in vertikaler Richtung fallende Strömung führt und an seinem Ende das Spülventil 30 aufweist, das zu der Abgabestelle führt.At the in Fig. 4 shown third embodiment, several laid in the vertical direction riser strings 2.1 to 2.4 are provided. At the front end in the flow direction of the respective strands 2 are shut-off valves 33, which are provided between the individual strands 2.1 to 2.3 and a horizontal distribution line. The individual riser strands 2.1 to 2.4 enforce four superimposed floors in the embodiment shown. For reasons of simplified illustration, only a single wet cell 8 is shown schematically. In the upper floor all ring lines 10 are shown schematically. The underlying wet cells with the associated loops are not shown. The corresponding embodiment is indicated only by the mouth 16 provided on the floor. At the end of the three left branches 2.1 to 2.3 are the controllable valves 28. These valves 28 are provided between the individual strands 2.1 to 2.3 and a transverse line 36, whose distal end is connected to the last strand 2.4, which a falling in the vertical direction Flow leads and has at its end the purge valve 30, which leads to the discharge point.

Bei dem in Fig. 5 gezeigten vierten Ausführungsbeispiel der vorliegenden Erfindung sind horizontal verlegte parallele Stockwerksstränge 2 vorgesehen, die durchgeschleift sind. Dementsprechend befindet sich am Ende eines jeden Stranges 2 eine Steigleitung 35, die zu dem nächsten Stockwerksstrang 2 führt und an dem in Strömungsrichtung vorderen Ende des darüberliegenden Stockwerksstranges 2 angeschlossen ist. Der Strang 2.4 des obersten Stockwerks mündet in einer Abwasserleitung 26, die mit einem Spülventil 30 versehen ist, welches zu der Abgabestelle 32 für verbrauchtes Wasser führt. Bei dem in Fig. 5 gezeigten Ausführungsbeispiel befindet sich dieses Spülventil 30 in einem Kellergeschoß. Es kann aber an einer beliebigen Stelle hinter der letzten Ringleitung 10 des obersten Stranges 2.4 vorgesehen sein.At the in Fig. 5 shown fourth embodiment of the present invention horizontally laid parallel floor strands 2 are provided, which are looped through. Accordingly, located at the end of each strand 2 a riser 35, which leads to the next floor strand 2 and is connected to the upstream end of the overlying floor strand 2 in the flow direction. The uppermost strand 2.4 terminates in a sewer line 26 provided with a purge valve 30 leading to the spent water discharge point 32. At the in Fig. 5 embodiment shown, this flush valve 30 is located in a basement. However, it can be provided at any point behind the last loop 10 of the uppermost strand 2.4.

Bei dem in Fig. 6 gezeigten Ausführungsbeispiel ist ein Kaltwasserkreislaufsystem mit zwei parallelen Steigrohrsträngen 2 gezeigt. Jeder einzelne Steigrohrstrang 2 versorgt pro Stockwerk zwei einander gegenüberliegende Nasszellen 8 mit Kaltwasser. Das in Strömungsrichtung hintere Ende des ersten, in Fig. 6 linken Stranges 2.1 wird über eine Querleitung 36 mit dem in Strömungsrichtung vorderen Ende des rechten, zweiten Stranges 2.2 verbunden. Der zweite Steigrohrstrang 2.2 mündet jedoch in einem steuerbaren Spülventil 30, welches zu einer Abgabestelle 32 für verbrauchtes Wasser an die Kanalisation führt. Vor dem Anschluss an dieses Spülventil 30 ist indes ein T-Stück vorgesehen, das zu einer Zirkulationsleitung 38 führt, die eine Pumpe 40 und eine biologische Eliminierungseinheit 42 umfasst und über ein weiteres T-Stück an das in Strömungsrichtung vordere Ende des ersten Steigrohrstranges 2.1 angeschlossen ist. Die Zirkulationsleitung 38 kann über beispielsweise steuerbare Stellventile verschlossen werden. Üblicherweise wird das in dem in Fig. 6 gezeigten Ausführungsbeispiel bereitgestellte Kaltwasser von der Übergabestelle 22 über den ersten Steigrohrstrang 2.1, die Querleitung 36 und durch den zweiten Steigrohrstrang 2.2 geführt. Bei unzureichender Durchströmung kann das Spülventil 30 geöffnet und eventuell in dem Leitungssystem stehendes Kaltwasser an das Abwassersystem abgegeben werden. Bei starker Verschmutzung besteht die Möglichkeit, das an sich in dem Leitungssystem stehende Wasser durch Betätigen der Pumpe 40 durch die biologische Eliminierungseinheit 42 zu führen und dort zu behandeln. Danach kann das behandelte Wasser in das System zurückgeleitet, vorzugsweise aber nach Öffnen des Spülventils 30 über das Abwassemetz abgeleitet werden.At the in Fig. 6 1, a cold water circulation system with two parallel riser strands 2 is shown. Each individual riser 2 supplies per Floor two opposite wet cells 8 with cold water. The downstream end of the first, in Fig. 6 left strand 2.1 is connected via a transverse line 36 with the front end in the flow direction of the second right strand 2.2. However, the second riser 2.2 opens into a controllable flush valve 30, which leads to a discharge point 32 for spent water to the sewer. Before connecting to this flush valve 30, however, a tee is provided which leads to a circulation line 38 which comprises a pump 40 and a biological elimination unit 42 and connected via a further T-piece to the upstream end of the first riser string 2.1 is. The circulation line 38 can be closed by controllable control valves, for example. Usually in the in Fig. 6 illustrated embodiment provided cold water from the transfer point 22 via the first riser 2.1, the transverse line 36 and through the second riser 2.2. If the flow is insufficient, the flushing valve 30 can be opened and any cold water in the piping system can be discharged to the sewage system. In the case of heavy soiling, it is possible to guide the water which is intrinsically in the line system by operating the pump 40 through the biological elimination unit 42 and to treat it there. Thereafter, the treated water can be returned to the system, but preferably discharged after opening the purge valve 30 via the sewer network.

Die Fig. 7 zeigt schematisch den Anschluss einer jeden in den vorherigen Ausführungsbeispielen schematisch dargestellten Ringleitung 10 an den zugeordneten Strang 2. Abzweig 14 und Mündung 16 sind an einer einheitlichen Ringleitungsspülarmatur 44 vorgesehen, welche als Abzweig- und Anschlussarmatur ausgebildet ist. In einem in Strömungsrichtung vorderen Bereich der Ringleitungsspülarmatur 44 geht ein Abzweigstutzen 46 quer zur Erstreckungsrichtung des Stranges 2 von der Ringleitungsspülarmatur 44 ab. Dieser Abzweigstutzen 46 ist an die Ringleitung 10 angeschlossen. Das in Strömungsrichtung hintere Ende der Ringleitung 10 ist an einen sich ebenfalls quer zur Erstreckung des Stranges 2 erstreckenden Rückführstutzen 48 angeschlossen. Dieser Rückführstutzen 48 mündet in dem verengten Querschnitt einer Drossel 50, die am in Strömungsrichtung hinteren Bereich der Ringleitungsspülarmatur 44 vorgesehen ist, oder unmittelbar danach. Der Abzweigstutzen 46 und der Rückführstutzen 48 liegen weniger als 30 cm voneinander beabstandet. Die Drossel 50 ist derart ausgelegt, dass zwischen dem Abzweig14 und der Mündung 16 eine Druckdifferenz von ca. 20 bis 50 mbar eingestellt wird, wenn beispielsweise das am jeweiligen Ende des entsprechenden Stranges 2 vorgesehene Ventil 28 zum Durchspülen des Stranges oder eine nachgelagerte Entnahmestelle betätigt wird. Diese Druckdifferenz reicht aus, um innerhalb der jeweiligen Ringleitung 10 eine zirkulierende Spülströmung' zu erzeugen. Als Richtwert wird eine Geschwindigkeit der Strömung S im Strang von etwa 1,5 m/Sekunde angenommen. Die Mündung 16, der Abzweig 14 sowie die Drossel 50 sind derart ausgelegt, dass von der Strömung S im Strang etwa 10 % als Ringleitungsströmung R die jeweilige Ringleitung 10 durchspülen, wohingegen etwa 90 % als Hauptströmung H die Strangspülung geradlinig fortsetzen und in der Drossel 50 gedrosselt werdenThe Fig. 7 schematically shows the connection of each ring line 10 shown schematically in the previous embodiments to the associated strand 2. Branch 14 and mouth 16 are provided on a uniform Ringleitungsspülarmatur 44, which is designed as a branch and connection fitting. In a front region of the ring-line flushing fitting 44 in the direction of flow, a branch piece 46 extends transversely to the direction of extension of the strand 2 from the ring-line flushing fitting 44. This branch pipe 46 is connected to the ring line 10. The rear end of the ring line 10 in the direction of flow is connected to a likewise extending transversely to the extension of the strand 2 return pipe 48. This return pipe 48 opens in the narrowed cross-section of a throttle 50, which is provided at the downstream end of the Ringleitungsspülarmatur 44, or immediately thereafter. The branch pipe 46 and the return pipe 48 are spaced less than 30 cm apart. The throttle 50 is designed such that between the branch 14 and the mouth 16 a Pressure difference of about 20 to 50 mbar is set when, for example, provided at the respective end of the corresponding strand 2 valve 28 is operated for flushing the strand or a downstream sampling point. This pressure difference is sufficient to produce within the respective ring line 10 a circulating flushing flow '. As a guideline, a velocity of the flow S in the strand of about 1.5 m / second is assumed. The orifice 16, the branch 14 and the throttle 50 are designed such that approximately 10% of the flow S in the strand as loop flow R flush the respective ring line 10, whereas about 90% as the main flow H continue the line flush and in the throttle 50th be throttled

Zur Vermeidung einer Verkeimung des in Fig. 3 gezeigten Ausführungsbeispiels können die einzelnen Ventile 28 beispielsweise von einer zentralen Steuerung angesteuert werden. Üblicherweise werden die Ventile 28.1 bis 28.4 für sich jeweils zunächst geöffnet und geschlossen, um die jeweiligen Ringleitungen in den Strängen 2.1 bis 2.4 in den jeweiligen Bereichen nacheinander zu spülen. Das Spülventil 30 bleibt bei einem solchen Vorgehen offen, so dass eventuell verkeimtes Wasser aus den einzelnen Strängen 2.1 bis 2.4 direkt in das Abwassersystem abgeführt werden kann. Sofern für einen hinreichenden hydraulischen Abgleich zwischen den einzelnen Strängen 2.1 bis 2.4 gesorgt wird, kann gegebenenfalls auch auf die einzelnen Ventile 28 verzichtet und eine Durchspülung sämtlicher Stränge 2.1 bis 2.4 allein durch Öffnen des Spülventils 30 ermöglicht werden. Dem in Fig. 3 gezeigten Ausführungsbeispiel liegt indes die Erkenntnis zugrunde, dass allein durch wirkungsvolles Absperren und Öffnen der einzelnen Stränge 2.1 bis 2.4 zu jedem einzelnen Bereich eine sichere Durchspülung gewährleistet werden kann.To avoid contamination of the in Fig. 3 In the embodiment shown, the individual valves 28 can be controlled, for example, by a central control. Usually, the valves 28.1 to 28.4 are each first opened and closed in order to flush the respective ring lines in the strands 2.1 to 2.4 in the respective areas in succession. The flush valve 30 remains open in such a procedure, so that any contaminated water from the individual strands 2.1 to 2.4 can be discharged directly into the sewer system. If care is taken to ensure sufficient hydraulic balancing between the individual strands 2.1 to 2.4, the individual valves 28 can optionally also be dispensed with and all the strands 2.1 to 2.4 can be purged solely by opening the flushing valve 30. The in Fig. 3 The embodiment shown, however, is based on the finding that safe flushing can be ensured for each individual area solely by effectively shutting off and opening the individual strands 2.1 to 2.4.

Bei dem in Fig. 4 gezeigten Ausführungsbeispiel können die einzelnen vertikalen Steigrohrstränge in gleicher Weise gespült werden. Bei jeder Spülung wird in jedem Fall der rechte Steigrohrstrang 2.4 durchströmt und damit durchspült, der zu der Abgabestelle 32 führt.At the in Fig. 4 the embodiment shown, the individual vertical riser strands can be flushed in the same way. In each case, the right riser string 2.4 is flowed through and purged with each flush, which leads to the discharge point 32.

Bei dem in Fig. 5 gezeigten Ausführungsbeispiel muss lediglich das Spülventil 30 geöffnet werden, um die durchgeschleiften Stockwerksstränge insgesamt zu durchspülen und damit das in dem Kaltwassersystem enthaltene Kaltwasser auszutauschen. Entsprechendes gilt für das in Fig. 6 gezeigte Ausführungsbeispiel.At the in Fig. 5 In the embodiment shown, only the flushing valve 30 has to be opened in order to flush the looped floor strands in total and thus to exchange the cold water contained in the cold water system. The same applies to the in Fig. 6 shown embodiment.

Aufgrund der in Fig. 7 schematisch dargestellten Ausbildung von Abzweig 14 und Mündung 16 führt jedes Spülen eines einzelnen Stranges zumindest zu einer Spülströmung innerhalb der Ringleitungen 10 des zugeordneten Stranges 2. Darüber hinaus erfolgt die Auslegung von Abzweig 14, Mündung 16 und Drossel 50 zu jeder einzelnen Ringleitung 10 des Systems vorzugsweise in solcher Weise, dass eine gezielte Entnahme an einer Entnahmestelle 12, die an einer in Strömungsrichtung nachgelagerten Ringleitung angeordnet ist, zu einer Spülströmung an den in Strömungsrichtung vorgelagerten Ringleitungen 10. Wird beispielsweise bei dem in Fig. 5 gezeigten Ausführungsbeispiel im oberen Stockwerk an der in Strömungsrichtung letzten Ringleitung 10 eine Entnahmestelle benutzt, so führt dies zu einer Strömung innerhalb des gesamten Wassersystems, da die einzelnen Stränge 2.1 bis 2.4 durchgeschleift sind. Die Wasserentnahme an einem Handwaschbecken, das Spülen einer Toilette, Duschen oder Baden führt regelmäßig zu einer Strömung und damit zwischen jedem Abzweig und jeder Mündung einer einzelnen, der genannten letzten Ringleitung in Strömungsrichtung vorgelagerten Ringleitung zu einer Druckdifferenz, die einen Wasseraustausch in der jeweiligen Ringleitung bewirkt. Entsprechendes ergibt sich beispielsweise bei dem in Fig. 3 gezeigten Ausführungsbeispiel bei Betätigung einer Entnahmestelle 12, der an der jeweils rechten Ringleitung 10 angeschlossen ist, für die beiden in Strömungsrichtung davor gelagerten Ringleitungen 10 des Stranges 2.1.Due to the in Fig. 7 schematically illustrated training of branch 14 and mouth 16 leads each rinse of a single strand at least to a purge flow within the ring lines 10 of the associated strand 2. In addition, the design of branch 14, mouth 16 and throttle 50 is carried out to each individual ring line 10 of the system preferably in such a way that a targeted removal at a removal point 12, which is arranged on a downstream in the flow direction of the ring line, to a scavenging flow upstream of the ring lines in the direction of flow 10. For example, in the in Fig. 5 shown embodiment in the upper floor at the last in the direction of flow ring line 10 uses a sampling point, this leads to a flow within the entire water system, since the individual strands 2.1 to 2.4 are looped through. The removal of water from a hand basin, rinsing a toilet, showers or bathing regularly leads to a flow and thus between each branch and each mouth of a single, said last loop in the direction upstream ring line to a pressure difference, which causes a water exchange in the respective loop , The same results for example in the in Fig. 3 shown embodiment, upon actuation of a removal point 12 which is connected to the respective right loop line 10, for the two upstream in the flow direction of the ring lines 10 of the strand 2.1.

In gleicher Weise verhält sich prinzipiell das in Fig. 4 gezeigte dritte Ausführungsbeispiel der Erfindung. Handelt es sich hierbei beispielsweise um ein Hotel, bei dem lediglich das obere Stockwerk belegt wird, so kann jedenfalls durch zeitweilige Belegung sämtlicher Zimmer in dem obersten Stockwerk eine Durchspülung der jeweils unter den Zimmern angeordneten Ringleitungen 10 der darunterliegenden Zimmer erreicht werden.In the same way, the in principle behaves in Fig. 4 shown third embodiment of the invention. If this is, for example, a hotel in which only the upper floor is occupied, it can be achieved by temporarily occupying all rooms in the top floor flushing the respectively arranged under the rooms ring lines 10 of the underlying room.

In der in Fig. 7 gezeigten Ausführungsbeispiel ist die Drossel als Düse mit fest vorgegebenen Düsenquerschnitten und -übergängen ausgebildet. Alternativ und zur besseren Anpassung der Strömungswiderstände innerhalb eines Stranges oder in verschiedenen neben-bzw. übereinanderverlegten Strängen 2 kann es zu bevorzugen sein, die Drossel einstellbar auszubilden. Die Einstellung der Drossel sollte hierbei vorzugsweise automatisiert erfolgen. Eine solche steuerbare Drossel sollte vorzugsweise an die zentrale Steuereinheit angeschlossen sein. Mit solchen steuerbaren Drosseln kann beispielsweise ein hydraulischer Abgleich zwischen einzelnen Ringleitungen 10 bzw. einzelnen Strängen 2 erreicht werden.In the in Fig. 7 Shown embodiment, the throttle is designed as a nozzle with fixed nozzle cross-sections and transitions. Alternatively, and for better adaptation of the flow resistance within a strand or in different secondary or. superimposed strands 2, it may be preferable to make the throttle adjustable. The adjustment of the throttle should preferably be done automatically. Such a controllable throttle should preferably be connected to the central control unit. With such controllable throttles, for example, a hydraulic balancing between individual ring lines 10 or individual strands 2 can be achieved.

Im übrigen sei darauf hingewiesen, dass die in den Ausführungsbeispielen schematisch dargestellte Rückleitungsspülarmatur 44 ferner auch die Vollstrom-Absperrventile umfassen kann, um den Montageaufwand bei der Verwirklichung des Trinkwassersystems möglichst gering zu halten. Die Ausbildung einer solchen einheitlichen Armatur vermindert ganz erheblich den Montageaufwand, da lediglich an vier Stellen der Strang bzw. die zugeordnete Ringleitung an die Armatur angeschlossen werden muss.Incidentally, it should be noted that the return line flush valve 44 shown schematically in the embodiments may also include the full-flow shut-off valves to minimize the assembly effort in the realization of the drinking water system. The formation of such a uniform fitting significantly reduces the assembly effort, since only at four points of the strand or the associated ring line must be connected to the valve.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

22
KaltwasserstrangCold water line
44
WarmwasserstrangHot water line
66
WarmwasserzirkulationsleitungHot water circulation pipe
88th
Nasszellewet
1010
Ringleitungloop
1212
Entnahmestellesampling point
12a12a
ToiletteToilet
12b12b
Duscheshower
12c12c
Badewannebathtub
12d12d
Handwaschbeckenhand basin
1414
Abzweigjunction
1616
Mündungmuzzle
18a18a
Vollstrom-AbsperrventilFull flow shut-off valve
18b18b
Vollstrom-AbsperrventilFull flow shut-off valve
20a20a
Absperrventilshut-off valve
20b20b
Absperrventilshut-off valve
2222
ÜbergabestelleTransfer point
2424
Steigleitungriser
2626
Verbindungsleitungconnecting line
2828
VentilValve
3030
Spülventilflush valve
3232
Abgabestelledelivery point
3333
Absperrventil oilShut-off valve oil
3535
Steigleitungriser
3636
Querleitungcross line
3838
Zirkulationsleitungcirculation line
4040
Pumpepump
4242
biologische Eliminierungseinheitbiological elimination unit
4444
RingleitungsspülarmaturRingleitungsspülarmatur
4646
Abzweigstutzenbranch connection
4848
RückführstutzenRecirculation port
5050
Drosselthrottle

Claims (18)

  1. Water system having a delivery point (22) from a public drinking water supply network and at least one storey or riser pipe string (2) as well as a plurality of ring pipes (10), which are arranged one behind another in the extension direction of the string, lead in each case to at least one extraction point (12), by way of a mouth (16) branch off from the string (2), in each case via a branch (14), and open out into the string (2) behind this in the flow direction of the string, wherein in each case via a mouth (16), wherein the ring pipes (10) and/or the branch (14) or the mouth (16), respectively, of the respective ring pipe (10) in the string is/are configured in such a manner that when water is extracted from an extraction point (12) which is connected to the string, a pressure differential is produced by a flow in the string between the branch (14) and the mouth (16) of the ring pipe (10) or ring pipes (10) which in the flow direction are upstream of the extraction point (12), by way of which pressure differential a flushing flow is produced in the upstream ring pipe (10) or in the upstream ring pipes (10),
    characterized in
    that the water system is a drinking water system, and that the flow or flushing flow, respectively, in the drinking water system is produced exclusively by virtue of the difference between the pressure at the delivery point (22) from the public drinking water supply network and the extraction point (12) which is connected to the string (2).
  2. Drinking water system according to Claim 1, characterized by at least one controllable valve (28, 30) which in the opened state produces a flow which causes a flushing flow in the string, and which connects the drinking water system to an output point (32) for used water to the public waste water network.
  3. Drinking water system according to Claim 2, characterized in that the controllable valve (28) is assigned to an extraction point (12) which is connected to the ring pipe (10) which is provided in the end region of the string.
  4. Drinking water system according to one of the preceding claims, characterized in that several strings (2) are provided which are each provided in their string end region with a controllable valve (28) and are connected to the connecting pipe (26).
  5. Drinking water system according to one of Claims 2 to 4, characterized in that the controllable valve (28) is provided on the end of several looped strings (2).
  6. Drinking water system according to one of Claims 2 to 5, characterized in that the controllable valve or valves are time-controlled.
  7. Drinking water system according to one of Claims 2 to 6, characterized in that the controllable valve or valves (28, 30) are controllable by a central control unit.
  8. Drinking water system according to Claim 7, characterized by flow sensors and/or temperature sensors, the measured values of which are processed in the central control unit for controlling the controllable valve or valves (28).
  9. Drinking water system according to one of the preceding claims, characterized in that the branch (14) and the mouth (16) of the ring pipe (10) are realized in a standardized ring pipe flushing fitting (44).
  10. Drinking water system according to one of the preceding claims, characterized in that the length of the string between the branch (14) and the mouth (16) of one single ring pipe (10) is less than 0.3 m.
  11. Drinking water system according to one of the preceding claims, characterized in that each ring pipe (10) opens out in a ring pipe flushing fitting (44) which is realized on the string in the manner of a throttle (50).
  12. Drinking water system according to Claim 11, characterized in that the throttle (50) is realized as a nozzle.
  13. Drinking water system according to Claim 11 or 12, characterized in that the throttle is realized so as to be adjustable.
  14. Drinking water system according to one of the preceding claims, characterized in that full flow shut-off valves (18a, 18b) that are free of dead space are provided in each case between the branch (14) and the mouth (16) of the ring pipe (10) on the string (2) and on the associated ring pipe (10).
  15. Drinking water system according to Claim 14, characterized in that the full flow shut-off valves (18a, 18b) are ball valves.
  16. Drinking water system according to Claim 9 or 11 and 14 or 15, characterized in that the full flow shut-off valves (18a, 18b) are integrated into the ring pipe flushing fitting (44) from the branch (14) or the mouth (16).
  17. Method for operating a drinking water system according to one of Claims 1 to 16, having at least one storey or riser pipe string (2) as well as a plurality of ring pipes (10) which are arranged behind one another in the extension direction of the string (2) and each lead to at least one extraction point (12), and which each by way of a branch (14) branch off from the string (2) and behind this in the flow direction of the string each open out into the string by way of a mouth (16), wherein by extracting drinking water from an extraction point (12) which is connected to the string, a pressure differential is produced by a flow in the string between the branch (14) and the mouth (16) of the ring pipe or ring pipes (10) which in the flow direction are upstream of the extraction point, by way of which pressure differential a flushing flow is produced in the upstream ring pipe (10) or in the upstream ring pipes (10), wherein
    the flow or flushing flow, respectively, is produced exclusively by virtue of the pressure differential between a delivery point (22) from a public drinking water supply network and the extraction point (12) which is connected to the string (2).
  18. Method according to Claim 17, characterized in that the extraction of the drinking water at the extraction point (12) is performed by a controllable valve (28).
EP07022601.4A 2006-04-13 2007-04-13 Drinking and domestic water system and method for operating such a system Active EP1887150B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07022601T PL1887150T3 (en) 2006-04-13 2007-04-13 Drinking and domestic water system and method for operating such a system

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DE102006017807A DE102006017807B4 (en) 2006-04-13 2006-04-13 Drinking water system and method for operating such a system
EP07007597.3A EP1845207B1 (en) 2006-04-13 2007-04-13 Drinking water system and method for operating such a system

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EP07007597.3A Division EP1845207B1 (en) 2006-04-13 2007-04-13 Drinking water system and method for operating such a system
EP07007597.3A Division-Into EP1845207B1 (en) 2006-04-13 2007-04-13 Drinking water system and method for operating such a system
EP07007597.3 Division 2007-04-13

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EP10010597.2A Active EP2264251B1 (en) 2006-04-13 2007-04-13 Drinking and domestic water system and method for operating such a system
EP07022601.4A Active EP1887150B1 (en) 2006-04-13 2007-04-13 Drinking and domestic water system and method for operating such a system

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EP10010597.2A Active EP2264251B1 (en) 2006-04-13 2007-04-13 Drinking and domestic water system and method for operating such a system

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DE102006017807B4 (en) 2013-10-24
DK2264251T3 (en) 2016-11-07
EP2264251B1 (en) 2016-08-24
PL1845207T3 (en) 2016-11-30
EP2264251A2 (en) 2010-12-22
DE102006017807A1 (en) 2007-10-18
DK1887150T3 (en) 2016-12-19
SI1845207T1 (en) 2016-07-29
EP2264251A3 (en) 2013-03-06
EP1845207B1 (en) 2016-05-11
EP1887150A3 (en) 2013-03-06
EP1845207A1 (en) 2007-10-17
EP1887150A2 (en) 2008-02-13
PL2264251T3 (en) 2017-08-31
SI2264251T1 (en) 2016-11-30

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