EP3660234B1 - Drinking and domestic water system - Google Patents

Drinking and domestic water system Download PDF

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Publication number
EP3660234B1
EP3660234B1 EP19210407.3A EP19210407A EP3660234B1 EP 3660234 B1 EP3660234 B1 EP 3660234B1 EP 19210407 A EP19210407 A EP 19210407A EP 3660234 B1 EP3660234 B1 EP 3660234B1
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EP
European Patent Office
Prior art keywords
valve
drinking
circulation
water system
service water
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Application number
EP19210407.3A
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German (de)
French (fr)
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EP3660234A1 (en
Inventor
Robin DIEKMANN
Thomas Spöler
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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Publication of EP3660234A1 publication Critical patent/EP3660234A1/en
Application granted granted Critical
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    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other

Definitions

  • the present invention relates to a drinking and industrial water system with the preamble features of claim 1.
  • a drinking and industrial water system is off DE 20 2015 006 366 U1 known.
  • the drinking and service water system off DE 20 2015 006 366 U1 has a riser, several floors and a downpipe, with several consumers connected to each floor.
  • a supply line can feed fresh water into both the riser and the downcomer to supply the consumer. In the event of a tapping process, a consumer can therefore draw water from both directions.
  • a circulation line initiates a circulation flow in the floor strands, which flows from the riser in the direction of the downpipe.
  • a regulating valve is arranged at the end facing the downpipe, in which a thermostatic element controlled by the water temperature is installed as an actuator for a valve body which cooperates with a valve seat to regulate the circulation flow.
  • the circulation is usually used to keep water at the desired water temperature close to the consumer. This is because hot or cold water standing in the line would cool down or heat up, so that the water at the desired temperature is not initially dispensed when the consumer is drawn. Standing water is also hygienically questionable.
  • a bypass for bridging the valve seat, in which a non-return closing element is mounted, is recessed in the valve housing of the regulating valve.
  • the non-return closing element is pretensioned in the direction of the circulation flow, so that the circulation flow is regulated solely by the thermostatic element.
  • the non-return closure element opens against the direction of the circulation flow.
  • the thermostat element is usually set in such a way that the circulation flow is low. Nevertheless, with the help of the non-return closing element, the consumers can also be supplied with sufficient water via the downpipe when consumption is high.
  • the present invention seeks to specify a drinking and service water system which, in an improved manner, meets the technical requirements that are made possible by the provision of germ-free drinking and service water with permanent exchange of water are provided in appropriate supply facilities.
  • the present invention specifies a drinking and service water system with the features of claim 1.
  • This drinking and service water system has a connection to the public water supply network, via which at least one supply line leading to at least one consumer is fed with fresh water.
  • the drinking and service water system also has a circulation line and a circulation pump arranged in the circulation line for returning unused water.
  • the circulation line usually joins the supply line again. In this way, the water in the drinking and service water system can be circulated when the consumer fails to tap and the formation of germs from standing water can be avoided.
  • a water heater, a cooling unit or a heat exchanger is usually arranged in the circulation manifold or assigned to the opening into the supply line. Cold water is usually cooled to temperatures below 25 ° C and hot water is heated to temperatures above 55 ° in order to avoid the formation of nuclei, which is favored in an intermediate temperature range.
  • the circulation flow is usually less than a supply flow triggered by a tapping process of a consumer.
  • the circulation line preferably has a nominal diameter that is smaller, for example DN 15 or smaller, than the nominal diameter of the supply line.
  • the supply line usually has a nominal diameter of DN 20 or larger.
  • a regulating valve is provided in the circulation line, which has an adjusting element controlled by the water temperature as an actuator for a valve body of the regulating valve. As a rule, an expansion element is provided as the adjusting element.
  • a check valve is provided to bypass the valve seat. The check valve can be integrated into the regulating valve and arranged in a bypass formed in the housing of the regulating valve.
  • the regulating valve and the check valve can be designed as separate valves, in particular with a separate valve housing, and can be installed in parallel in the drinking and service water system.
  • the regulating valve and the check valve are followed by a flushing valve for draining water from the drinking and service water system.
  • the check valve is designed in such a way that it opens in the direction of the circulation flow initiated by the circulation pump.
  • the present invention particularly takes a drinking and service water system with cold water into view. Most of the time, water from the water is controlled by time, consumption or temperature The drinking and service water system is drained via the flush valve and replaced with fresh water from the public water supply network. With the solution according to the invention, it can be ensured that a sufficiently large volume flow flows through the circulation line during a flushing process, ie when the flushing valve is open, that is to say that a sufficient amount of water can be exchanged. In some hot water circulation systems, too, it may be desirable to drain water from the system. In this respect, the present invention is not limited to a cold water system.
  • the thermal control element of the regulating valve is therefore usually set in such a way that water which is close to this temperature range or in this temperature range regulates a relatively high Kv value so that the circulation flow is kept as high as possible at critical temperatures in order to exchange this water as quickly as possible .
  • the thermal control element usually regulates a relatively small Kv value for the circulation flow.
  • the regulating valve usually has a valve housing, which can be designed as a cast metal component or as a plastic part.
  • the valve body of the regulating valve usually interacts with a flow opening between the inlet and outlet channels of the valve housing in order to regulate the water flow rate through the regulating valve.
  • An adjusting device for presetting the valve body is also usually provided.
  • Such a thermally controlled valve is, for example, from EP 1 372 054 A1 or the DE 100 56 715 A1 known.
  • the check valve opens in the direction of flow of a circulation flow initiated by the circulation pump.
  • the direction of flow of a flushing flow and of a flow in the case of a tapping process by a consumer coincide with the flow direction of the circulation flow.
  • This flow direction can therefore generally be referred to as the flow direction of the drinking and service water system.
  • the check valve usually has a check body which rests against a sealing seat. A flushing flow can push this non-return body away from the sealing seat and thus bypass the valve seat of the regulating valve.
  • the check valve has a prestressing element which is prestressed against the circulation flow and / or is electronically controlled.
  • the check valve can preferably be formed by an RV cartridge, ie a check valve cartridge known per se.
  • the non-return body is preferably designed as a spring-loaded valve cap.
  • the RV cartridge is sealingly inserted in a valve housing.
  • the RV cartridge is more preferably latched to the valve housing.
  • the housing of the RV cartridge which interacts with the walls of the valve housing, has protruding latching lugs which engage in locking grooves in the valve housing when the RV cartridge is pushed into the valve housing. In the locked state, the RV cartridge is inserted into the valve housing in a sealing manner and fixed there.
  • the RV cartridge can be installed both in a valve housing of a separately designed check valve and in a common valve housing for the regulating valve and check valve.
  • the non-return body can be controlled electronically.
  • at least one sensor, one actuator and one control unit are usually provided.
  • the sensor usually detects a characteristic variable of the valve combination of regulating valve and check valve, such as the pressure drop (pressure in front of the valve combination - pressure behind the valve combination) or the volume flow through the valve combination.
  • the control unit usually evaluates the signals from the sensor and controls the actuator accordingly.
  • the actuator usually acts directly or indirectly on the non-return body and, as a rule, adjusts it by means of an axial movement relative to the sealing seat. It is also conceivable that the non-return body is spring-loaded and electronically controlled.
  • the non-return body can be held in the closed position in addition to the spring force of the prestressing element, for example by an actuator designed in the manner of a blocking pin, plate or ring. It is possible to keep the non-return body in the closed position even when the water pressure is already sufficient to overcome the spring force of the pretensioning element.
  • the blocking pin, the blocking plate or the blocking ring is usually retracted orthogonally to the axis of the non-return body.
  • the check valve is designed such that it opens at a volume flow through the regulating valve of 7 l / min ⁇ 15%, very preferably ⁇ 10%, particularly preferably ⁇ 5%. "Opening” is usually understood to mean the moment at which the non-return body lifts off from the sealing seat. As a rule, the check valve does not open to the maximum at this volume flow.
  • the check valve is set up in such a way that the check body is at a maximum distance from the sealing seat from a volume flow of 8 l / min ⁇ 15%, very preferably ⁇ 10%, particularly preferably ⁇ 5% Position is held.
  • This position can also be understood as an open position in which the check valve is open to the maximum.
  • the differential pressures which lead to the open position of the non-return body are preferably 50-700 hPa, very preferably 100-500 hPa, particularly preferably 250-300 hPa.
  • the circulation line has several circulation lines which are each assigned to at least one consumer and connected to a common circulation collecting line of the circulation line in which the circulation pump is arranged and connected to the flushing valve.
  • a regulating valve and a check valve are provided at each end of the circulation lines leading into the circulation line.
  • the circulation collecting line can have a larger nominal diameter than the circulation lines.
  • the nominal diameter of the circulation line can correspond to that of the supply line, usually DN 20.
  • Hydraulic balancing of the individual lines is thus guaranteed as follows. Lines in which a relatively large amount of water is drawn usually have water at the desired temperature due to constant exchange. The regulating valve assigned to this branch then sets a relatively low KV value via the thermal control element. On the other hand, strands in which very little water is drawn usually contain more stale water that deviates from the desired water temperature. The regulating valve assigned to this branch then regulates a relatively high KV value for this branch. This ensures that the lines from which little water is drawn are adequately flowed through. At the same time, hydraulic balancing is created in a manner known per se in such a way that consumers are equally supplied with fresh water at the desired temperature regardless of the distance from the connection to the public water supply network.
  • the circulation pump is preferably located downstream of the flushing valve in the direction of flow. More preferably, a backflow preventer is provided in the circulation manifold, which is located downstream of the circulation pump in the direction of flow.
  • the function of the backflow preventer is to prevent fresh water from the connection to the public water supply network from flowing in the opposite direction into the drinking and service water system.
  • the circulation pump can usually be switched off during a flushing process.
  • the electronically controlled check valves are connected in terms of control to a control unit with which the check valves can be controlled independently of one another.
  • the control unit is set up in such a way that the check valves can be opened and closed again in a predetermined sequence.
  • the control unit is connected to the flushing valve in terms of control, so that the control unit initiates a flushing process by opening the flushing valve, regulates it by controlling the check valves and ends it by closing the flushing valve.
  • the control unit is preferably set up to carry out a flushing process in which a water change takes place for the entire drinking and service water system.
  • at least the volume between the connection to the public water supply network and the flush valve is exchanged.
  • the control unit can be set up in such a way that such a water change is repeated periodically with a period of, for example, 72 hours.
  • the drinking and service water system has a flow sensor. This is usually downstream of the regulating valve and the check valve in the direction of flow. If the drinking and service water system according to the invention has several circulation lines, the flow sensor is preferably provided in the circulation collecting line. Usually the flow sensor is assigned to the flushing valve and upstream of it in the direction of flow. In this way, the amount of fluid flushed during a flushing process can be determined.
  • the flow sensor usually sends the measured data to the control unit.
  • the control unit evaluates the measured data, logs them and / or allows them to flow into the control of a flushing process.
  • the flow rate is usually calculated by integrating the continuously measured volume flow over time.
  • the control unit can be set up, for example, in such a way that it closes the flush valve when, after the flush valve has been opened, the calculated flow rate corresponds to the total volume of the drinking and domestic water system.
  • the drinking and service water system has a flow rate limiter.
  • the flow rate limiter is usually located downstream of the flushing valve in the direction of flow.
  • the flow limiter usually prevents an excessive pressure drop in the drinking and service water system during a flushing process.
  • a drain downstream of the flush valve in the flow direction is preferably designed as a free drain.
  • the free flow is usually characterized by the fact that water has a fall section covered in the earth's gravitational field, which either runs directly in the surrounding atmosphere or is atmospherically connected to it. In this way it can be reliably avoided that contaminated or hygienically questionable water is sucked back into the water system in the event of a negative pressure in the water system. In particular, this fulfills the requirements of DIN EN 1717 for the separation of category 1 drinking water from category 5 water.
  • the free drain drains into a sewer.
  • Overflow monitoring is furthermore preferably assigned to the free flow. This usually communicates with the control unit and / or the flow rate limiter so that in the event of an impending overflow at the free outlet, the flow rate from the drinking and service water system can be regulated or reduced. Additionally or alternatively, the overflow monitoring can output a warning signal, for example optically or acoustically.
  • the drinking and service water system has a water heater, a cooling unit or a heat exchanger.
  • a cooling unit or a heat exchanger for cooling the drinking water is usually provided at the mouth of the circulation line or the circulation collecting line in the supply line.
  • the drinking water usually runs through the cooling unit or the heat exchanger for cooling before it gets back into the supply line.
  • a water heater or a heat exchanger for heating the drinking water is usually located downstream of the connection to the public water supply network in the direction of flow.
  • the drinking and service water system according to the present invention also preferably has a filtration system.
  • This is usually connected to the circulation manifold and upstream or downstream of the circulation pump in the direction of flow.
  • the filtration system can be connected to a line section running between the backflow preventer and the heat exchanger (or the water heater or the cooling unit) or to a line section running between the flushing valve and the regulating valve (s).
  • the filtration system is an ultrafiltration system with a membrane, with which macromolecular substances and small particles can be separated from the drinking water.
  • the exclusion limits are usually specified in the form of the NMWC (Nominal Molecular Weight Cut-Off, also MWCO, Molecular Weight Cut Off, unit: Dalton). It is defined as the minimum molecular mass of globular molecules that are 90% retained by the membrane.
  • the ultrafiltration system is operated with the dead-end method, in which the membrane filters the entire volume flow through the circulation manifold. In this way, germs can be filtered out of the drinking water cycle.
  • the drinking water is usually pumped against the membrane at low pressure by the circulation pump, so that any compaction of retained substances is reduced to a minimum.
  • a filter cake (cover layer or fouling) from the separated particles usually accumulates on the membrane.
  • the filter cake increases the filtration resistance and thus the pressure loss across the membrane. It usually has to be removed regularly by backwashing (pumping back of the medium that has already been separated off) and / or chemical cleaning and the filter element thus regenerated.
  • the Figure 1 shows a schematic view of an embodiment of a drinking and service water system of a building not shown in detail.
  • the building's drinking and service water system has a connection 2 to the public water supply network in order to supply the building with fresh water.
  • This fresh water is usually cold water that can be converted into warm drinking or service water within the building or used directly as cold service water for, for example, flushing the toilet or a cold water tap.
  • This in Figure 1 The drinking and service water system shown is designed as a cold water system.
  • a supply line 4 which is designed as a riser, is fed via the connection 2 to the public water supply network.
  • the riser 4 extends over three floors, with a supply line 6 branching off from the riser 4 on each floor.
  • the riser 4 and the supply lines 6 are designed for a nominal diameter of DN 20.
  • a consumer 8 is connected to the supply line 6 in each of the floors.
  • this connection is a T-piece connection 10.
  • the connection is implemented via a flow divider 12.
  • the supply line 6C is looped through between the consumers 8C1, 8C2, 8C3, 8C4.
  • a circulation line 14 is connected to the consumers on each floor.
  • circulation collecting line 16 water which is not consumed by the consumers 8 is passed into a circulation collecting line 16 to which the circulation lines 14 are connected.
  • the circulation manifold 16 is provided on the same floor as the connection 2 to the public water supply network.
  • the circulation collecting line 16 opens into the supply line 4, a heat exchanger 20 being arranged in front of the opening 18.
  • a working medium on the primary side 22 of the heat exchanger 20 absorbs thermal energy from the drinking water which passes through the secondary side 24 of the heat exchanger 20, whereby the drinking water cools down.
  • the drinking water is kept in constant circulation in this closed circuit via a circulation pump 26, which is arranged in the circulation collecting line 16.
  • the direction of the circulation flow is in the Figure 1 highlighted with an arrow Z.
  • a flow direction contrary to this circulation flow is prevented by a backflow preventer 28, which is arranged downstream in the flow direction of the circulation flow initiated by the circulation pump 26 in the circulation collecting line 17.
  • the backflow preventer 28 is followed by an ultrafiltration system 29.
  • the ultrafiltration system 29 contains a membrane which is flown against by the pumping power of the circulation pump 26 and which separates germs or other particles from the drinking water.
  • the ultrafiltration system 29 can alternatively be upstream of the flushing valve 16 in the direction of the circulation flow Z, so that the water drained from the system is also filtered. This means that the wastewater is less polluted.
  • a regulating valve 30, in which an electronically controlled non-return valve is integrated, is arranged at the coupling points of the circulation lines 14 into the circulation collecting line 16.
  • the regulating valves 30 are each connected to a control unit 32 for control purposes. This is likewise connected in terms of control to a flushing valve 34 which is connected upstream of the circulation collecting line 16 in the flow direction of the circulation pump 26.
  • a flushing valve 34 By opening the flush valve 34, water is passed through a flush valve 34 associated free drain 36 can be drained from the drinking and industrial water system. The water covers a free fall distance in the surrounding atmosphere before it flows off via a sewer pipe.
  • An overflow monitor 38 is assigned to the free outlet 36 and a flow sensor 40 is assigned to the flushing valve 34. Both the overflow monitor 38 and the flow sensor 40 communicate with the control unit 32, which evaluates the signals.
  • a flow rate limiter 42 is arranged on the free drain 36.
  • the control unit 32 is also connected in terms of control to the circulation pump 26, so that the pump can be switched off before or during a flushing process.
  • the control unit 32 initiates such a flushing process by opening the flushing valve 34.
  • the regulating valves 30 contain a non-return valve which, however, is only opened by the control unit 32 when a minimum volume flow of at least approx. 7 l / min is reached. In this way, sufficient water exchange can be guaranteed during a rinsing process.
  • the check valve or the control unit 32 is designed in such a way that a circulation flow initiated by the circulation pump 26 does not open the check valve.
  • a thermal valve with an expansion element is also provided, which regulates a flow opening through the regulating valve depending on the water temperature, the details of which are also provided Figure 2 can be seen, which, however, shows a regulating valve 43 with a spring-loaded check valve 44 integrated in a bypass.
  • the regulating valve 43 has a valve housing 48 with an inlet connection 50 and an outlet connection 52.
  • the direction of circulation is indicated by the arrow Z. This corresponds to the direction of flow during a flushing process.
  • the outer marking points in this direction, but cannot be seen in the sectional view.
  • the valve housing 48 forms a socket-shaped receptacle 54 for a valve insert identified by reference numeral 56.
  • the receptacle 54 is formed by an upper valve part which is screwed with its external thread into an internal thread of the valve housing 48.
  • the valve insert 56 has a receptacle for an expansion element 58 of a thermostat regulator 60.
  • the expansion element 58 acts on a plate 62 which is held in a pretensioned manner against the force of a spring 64 in the direction of the expansion element 58.
  • a tappet 66 which carries an actuator 68, is coupled to the plate 62.
  • the valve housing 48 also forms a connection piece for screwing together an emptying plug 74 in a sealing manner. Furthermore, a shut-off valve 76 is provided, which can be manually operated in order to manually shut off the regulating valve 70 by placing the shut-off valve 76 against a straight seat 78.
  • the valve housing 48 forms a valve seat identified by reference numeral 80, which leaves a flow opening 82 free between it and the actuator 68. In the Figures 3 and 4 this throughflow opening 82 enables a circulation volume flow.
  • the valve housing 48 also forms a bypass 84 as an extension of the connection 52, which bypass is formed as a through-hole between the tappet 66 and the connection 52.
  • a RV cartridge 86 is provided with a valve cap 88 held in a spring-loaded manner. The RV cartridge 86 is sealingly inserted into the bypass 84.
  • the valve housing 48 forms a circumferential groove in which locking projections 90 of the RV cartridge 86 are engaged in order to lock the RV cartridge 86, which rests on the opposite side against an annular projection formed by the valve housing 48.
  • the RV cartridge 86 is sealed on the outside of the valve housing 48.
  • the RV cartridge 86 contains the check valve 44.
  • the RV valve 44 closes the bypass 84 if a minimum volume system is not reached due to the spring preload.
  • the RV cartridge 86 closes the bypass 84 due to the spring preload and the water pressure in combination with the geometry of the valve cap 88.
  • the RV valve 44 opens and lets a flushing flow S through. This flushing flow S essentially bridges the throughflow opening 82.
  • the regulating valve after Figure 2 is self-sufficient, ie cannot be used electronically controlled.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Check Valves (AREA)

Description

Die vorliegende Erfindung betrifft ein Trink- und Brauchwassersystem mit den oberbegrifflichen Merkmalen von Anspruch 1. Ein solches Trink- und Brauchwassersystem ist aus DE 20 2015 006 366 U1 bekannt.The present invention relates to a drinking and industrial water system with the preamble features of claim 1. Such a drinking and industrial water system is off DE 20 2015 006 366 U1 known.

Das Trink- und Brauchwassersystem aus DE 20 2015 006 366 U1 hat einen Steigstrang, mehrere Stockwerksstränge und einen Fallstrang, wobei an die Stockwerksstränge jeweils mehrere Verbraucher angeschlossen sind. Eine Versorgungsleitung kann zur Versorgung der Verbraucher sowohl in den Steigstrang als auch in den Fallstrang frisches Wasser einleiten. Im Falle eines Zapfvorgangs kann ein Verbraucher daher aus beiden Richtungen Wasser beziehen.The drinking and service water system off DE 20 2015 006 366 U1 has a riser, several floors and a downpipe, with several consumers connected to each floor. A supply line can feed fresh water into both the riser and the downcomer to supply the consumer. In the event of a tapping process, a consumer can therefore draw water from both directions.

Eine Zirkulationsleitung initiiert eine Zirkulationsströmung in den Stockwerkssträngen, die von dem Steigstrang in Richtung des Fallstranges fließt. In jedem der Stockwerksstränge ist an dem dem Fallstrang zugewandten Ende ein Regulierventil angeordnet, in das ein durch die Wassertemperatur gesteuertes Thermostatelement als Stellglied für einen Ventilkörper eingebaut ist, der mit einem Ventilsitz zur Regelung der Zirkulationsströmung zusammenwirkt. Die Zirkulation dient in der Regel dazu, nahe an dem Verbraucher Wasser mit der gewünschten Wassertemperatur bereitzuhalten. Denn in der Leitung stehendes Warm- bzw. Kaltwasser würde erkalten bzw. sich erwärmen, sodass beim Zapfen an dem Verbraucher zunächst nicht das Wasser mit der gewünschten Temperatur ausgegeben wird. Stehendes Wasser ist außerdem hygienisch bedenklich.A circulation line initiates a circulation flow in the floor strands, which flows from the riser in the direction of the downpipe. In each of the floor strings, a regulating valve is arranged at the end facing the downpipe, in which a thermostatic element controlled by the water temperature is installed as an actuator for a valve body which cooperates with a valve seat to regulate the circulation flow. The circulation is usually used to keep water at the desired water temperature close to the consumer. This is because hot or cold water standing in the line would cool down or heat up, so that the water at the desired temperature is not initially dispensed when the consumer is drawn. Standing water is also hygienically questionable.

In dem Ventilgehäuse des Regulierventils ist ein Bypass zur Überbrückung des Ventilsitzes ausgespart, in dem ein Rückschlag-Schließelement montiert ist. Das Rückschlag-Schließelement ist in Richtung der Zirkulationsströmung vorgespannt, sodass die Zirkulationsströmung allein durch das Thermostatelement reguliert wird. Bei einer Strömung entgegen der Zirkulationsströmung jedoch, beispielsweise bei einem langanhaltenden Zapfvorgang eines Verbrauchers nahe des Fallstranges, öffnet sich das Rückschlag-Schließelement gegen die Richtung der Zirkulationsströmung.A bypass for bridging the valve seat, in which a non-return closing element is mounted, is recessed in the valve housing of the regulating valve. The non-return closing element is pretensioned in the direction of the circulation flow, so that the circulation flow is regulated solely by the thermostatic element. However, in the case of a flow against the circulation flow, for example in the case of a long-lasting tapping process by a consumer close to the downpipe, the non-return closure element opens against the direction of the circulation flow.

Üblicherweise ist das Thermostatelement derart eingestellt, dass die Zirkulationsströmung gering ausfällt. Dennoch können die Verbraucher mit Hilfe des Rückschlag-Schließelementes bei hohem Verbrauch auch über den Fallstrang mit ausreichend Wasser versorgten werden.The thermostat element is usually set in such a way that the circulation flow is low. Nevertheless, with the help of the non-return closing element, the consumers can also be supplied with sufficient water via the downpipe when consumption is high.

Die vorliegende Erfindung will ein Trink- und Brauchwassersystem angeben, welches in verbesserter Weise den technischen Anforderungen genügt, die durch die Bereitstellung von möglichst keimfreiem Trink- und Brauchwasser bei permanentem Austausch von Wasser in entsprechenden Versorgungseinrichtungen gestellt sind.The present invention seeks to specify a drinking and service water system which, in an improved manner, meets the technical requirements that are made possible by the provision of germ-free drinking and service water with permanent exchange of water are provided in appropriate supply facilities.

Zur Lösung dieses Problems wird mit der vorliegenden Erfindung ein Trink- und Brauchwassersystem mit den Merkmalen von Anspruch 1 angegeben.To solve this problem, the present invention specifies a drinking and service water system with the features of claim 1.

Dieses Trink- und Brauchwassersystem hat einen Anschluss an das öffentliche Wasserversorgungsnetz, über den zumindest eine zu mindestens einem Verbraucher führende Versorgungsleitung mit frischem Wasser gespeist wird. Das Trink- und Brauchwassersystem hat weiter eine Zirkulationsleitung und eine in der Zirkulationsleitung angeordnete Zirkulationspumpe zur Rückführung von unverbrauchtem Wasser. Die Zirkulationsleitung mündet in der Regel wieder in die Versorgungsleitung. So kann das Wasser in dem Trink- und Brauchwassersystem bei ausbleibendem Zapfvorgang der Verbraucher zirkuliert und eine Keimbildung durch stehendes Wasser vermieden werden. Ein Wassererhitzer, ein Kühlaggregat oder ein Wärmetauscher ist für gewöhnlich in der Zirkulationssammelleitung angeordnet oder der Mündung in die Versorgungsleitung zugeordnet. Dabei wird Kaltwasser in der Regel auf Temperaturen unter 25°C gekühlt und Warmwasser auf Temperaturen über 55° erhitzt, um eine Keimbildung, die in einem dazwischenliegenden Temperaturbereich begünstigt ist, zu vermeiden.This drinking and service water system has a connection to the public water supply network, via which at least one supply line leading to at least one consumer is fed with fresh water. The drinking and service water system also has a circulation line and a circulation pump arranged in the circulation line for returning unused water. The circulation line usually joins the supply line again. In this way, the water in the drinking and service water system can be circulated when the consumer fails to tap and the formation of germs from standing water can be avoided. A water heater, a cooling unit or a heat exchanger is usually arranged in the circulation manifold or assigned to the opening into the supply line. Cold water is usually cooled to temperatures below 25 ° C and hot water is heated to temperatures above 55 ° in order to avoid the formation of nuclei, which is favored in an intermediate temperature range.

Die Zirkulationsströmung ist in der Regel geringer als eine durch einen Zapfvorgang eines Verbrauchers ausgelöste Versorgungsströmung. Die Zirkulationsleitung hat dementsprechend bevorzugt einen Nenndurchmesser, der geringer, beispielsweise DN 15 oder kleiner, ausgebildet ist als der Nenndurchmesser der Versorgungsleitung. Die Versorgungsleitung hat für gewöhnlich einen Nenndurchmesser von DN 20 oder größer. In der Zirkulationsleitung ist ein Regulierventil vorgesehen, das ein durch die Wassertemperatur gesteuertes Stellelement als Stellglied für einen Ventilkörper des Regulierventils aufweist. Als Stellelement ist in der Regel ein Dehnstoffelement vorgesehen. Zur Überbrückung des Ventilsitzes ist ein Rückschlagventil vorgesehen. Das Rückschlagventil kann in das Regulierventil integriert sein und in einem im Gehäuse des Regulierventils ausgebildeten Bypass angeordnet sein. Alternativ können das Regulierventil und das Rückschlagventil als separate Ventile, insbesondere mit separatem Ventilgehäuse, ausgebildet und parallel in dem Trink- und Brauchwassersystem eingebaut sein. In Richtung der Zirkulationsströmung ist dem Regulierventil und dem Rückschlagventil ein Spülventil zum Ablassen von Wasser aus dem Trink- und Brauchwassersystem nachgelagert. Das Rückschlagventil ist derart ausgebildet, dass es in Richtung der durch die Zirkulationspumpe initiierten Zirkulationsströmung öffnet.The circulation flow is usually less than a supply flow triggered by a tapping process of a consumer. Accordingly, the circulation line preferably has a nominal diameter that is smaller, for example DN 15 or smaller, than the nominal diameter of the supply line. The supply line usually has a nominal diameter of DN 20 or larger. A regulating valve is provided in the circulation line, which has an adjusting element controlled by the water temperature as an actuator for a valve body of the regulating valve. As a rule, an expansion element is provided as the adjusting element. A check valve is provided to bypass the valve seat. The check valve can be integrated into the regulating valve and arranged in a bypass formed in the housing of the regulating valve. Alternatively, the regulating valve and the check valve can be designed as separate valves, in particular with a separate valve housing, and can be installed in parallel in the drinking and service water system. In the direction of the circulation flow, the regulating valve and the check valve are followed by a flushing valve for draining water from the drinking and service water system. The check valve is designed in such a way that it opens in the direction of the circulation flow initiated by the circulation pump.

Die vorliegende Erfindung nimmt insbesondere ein Trink- und Brauchwassersystem mit Kaltwasser in den Blick. Meist wird zeitgesteuert, verbrauchs- oder temperaturabhängig Wasser aus dem Trink- und Brauchwassersystem über das Spülventil abgelassen und durch frisches Wasser aus dem öffentlichen Wasserversorgungsnetz ersetzt. Mit der erfindungsgemäßen Lösung kann dabei sichergestellt werden, dass während eines Spülvorgangs, d.h. bei geöffnetem Spülventil, ein ausreichend großer Volumenstrom durch die Zirkulationsleitung strömt, also eine ausreichende Menge Wasser ausgetauscht werden kann. Unter Umständen kann es auch bei Warmwasserzirkulationssystemen wünschenswert sein, Wasser aus dem System abzulassen. Insofern ist die vorliegende Erfindung nicht auf ein Kaltwassersystem beschränkt.The present invention particularly takes a drinking and service water system with cold water into view. Most of the time, water from the water is controlled by time, consumption or temperature The drinking and service water system is drained via the flush valve and replaced with fresh water from the public water supply network. With the solution according to the invention, it can be ensured that a sufficiently large volume flow flows through the circulation line during a flushing process, ie when the flushing valve is open, that is to say that a sufficient amount of water can be exchanged. In some hot water circulation systems, too, it may be desirable to drain water from the system. In this respect, the present invention is not limited to a cold water system.

In dem Trinkwasser bzw. in den Leitungen enthaltene Keime vermehren sich stark in einem Temperaturbereich von ca. 25° bis ca. 55°C. Das thermische Stellelement des Regulierventils ist für gewöhnlich daher so eingestellt, dass Wasser, welches nahe diesem Temperaturbereich oder in diesem Temperaturbereich liegt, einen relativ hohen Kv-Wert einregelt, sodass der Zirkulationsfluss bei kritischen Temperaturen möglichst hoch gehalten wird, um möglichst rasch dieses Wasser auszutauschen. Bei Wassertemperaturen, die relativ weit von dem kritischen Temperaturbereich entfernt liegen, regelt das thermische Stellelement in der Regel einen relativ kleinen Kv-Wert für die Zirkulationsströmung ein. Das Regulierventil hat in der Regel ein Ventilgehäuse, welches als Metallgussbauteil oder als Kunststoffteil ausgebildet sein kann. Der Ventilkörper des Regulierventils wirkt üblicherweise mit einer Durchflussöffnung zwischen Eingangs- und Ausgangskanal des Ventilgehäuses zusammen, um die Wasserdurchflussmenge durch das Regulierventil zu regeln. Es ist ferner üblicherweise eine Stellvorrichtung zur Voreinstellung des Ventilkörpers vorgesehen. Ein solches thermisch gesteuertes Ventil ist beispielsweise aus der EP 1 372 054 A1 oder der DE 100 56 715 A1 bekannt.Germs contained in the drinking water or in the pipes multiply strongly in a temperature range of approx. 25 ° to approx. 55 ° C. The thermal control element of the regulating valve is therefore usually set in such a way that water which is close to this temperature range or in this temperature range regulates a relatively high Kv value so that the circulation flow is kept as high as possible at critical temperatures in order to exchange this water as quickly as possible . At water temperatures that are relatively far from the critical temperature range, the thermal control element usually regulates a relatively small Kv value for the circulation flow. The regulating valve usually has a valve housing, which can be designed as a cast metal component or as a plastic part. The valve body of the regulating valve usually interacts with a flow opening between the inlet and outlet channels of the valve housing in order to regulate the water flow rate through the regulating valve. An adjusting device for presetting the valve body is also usually provided. Such a thermally controlled valve is, for example, from EP 1 372 054 A1 or the DE 100 56 715 A1 known.

Das Rückschlagventil öffnet in Fließrichtung einer durch die Zirkulationspumpe initiierten Zirkulationsströmung. Die Fließrichtung einer Spülströmung sowie einer Strömung im Falle eines Zapfvorgangs eines Verbrauchers stimmt mit der Fließrichtung der Zirkulationsströmung überein. Diese Fließrichtung kann daher allgemein als Strömungsrichtung des Trink- und Brauchwassersystems bezeichnet werden. Das Rückschlagventil weist üblicherweise einen Rückschlagkörper auf, der an einem Dichtsitz anliegt. Eine Spülströmung kann diesen Rückschlagkörper von dem Dichtsitz wegdrücken und so den Ventilsitz des Regulierventils umgehen.The check valve opens in the direction of flow of a circulation flow initiated by the circulation pump. The direction of flow of a flushing flow and of a flow in the case of a tapping process by a consumer coincide with the flow direction of the circulation flow. This flow direction can therefore generally be referred to as the flow direction of the drinking and service water system. The check valve usually has a check body which rests against a sealing seat. A flushing flow can push this non-return body away from the sealing seat and thus bypass the valve seat of the regulating valve.

Nach einer bevorzugten Weiterbildung der vorliegenden Erfindung hat das Rückschlagventil ein gegen die Zirkulationsströmung vorgespanntes Vorspannelement und/oder ist elektronisch gesteuert. Dabei kann das Rückschlagventil vorzugsweise durch eine RV-Patrone, d.h. eine an sich bekannte Rückflussverhindererpatrone ausgebildet sein. Diese Ausgestaltung bietet den Vorteil, dass Standardbauteile zur Herstellung des erfindungsgemäßen Regulierventils verbaut werden können. Der Rückschlagkörper ist bevorzugt als federvorgespannte Ventilkappe ausgebildet. Die RV-Patrone ist dabei dichtend in einem Ventilgehäuse eingesetzt. Weiter bevorzugt ist die RV-Patrone mit dem Ventilgehäuse verrastet. Hierzu weist üblicherweise das Gehäuse der RV-Patrone, welches mit Wandungen des Ventilgehäuses zusammenwirkt, vorspringende Rastnasen auf, die in Verriegelungsnuten des Ventilgehäuses eingreifen, wenn die RV-Patrone in das Ventilgehäuse eingeschoben wird. Im verrasteten Zustand ist die RV-Patrone dichtend in das Ventilgehäuse eingesetzt und dort fixiert. Die RV-Patrone kann sowohl in ein Ventilgehäuse eines separat ausgebildeten Rückschlagventils als auch in ein gemeinsames Ventilgehäuse für Regulierventil und Rückschlagventil verbaut werden.According to a preferred development of the present invention, the check valve has a prestressing element which is prestressed against the circulation flow and / or is electronically controlled. The check valve can preferably be formed by an RV cartridge, ie a check valve cartridge known per se. This configuration offers the advantage that standard components are used to manufacture the regulating valve according to the invention can. The non-return body is preferably designed as a spring-loaded valve cap. The RV cartridge is sealingly inserted in a valve housing. The RV cartridge is more preferably latched to the valve housing. For this purpose, the housing of the RV cartridge, which interacts with the walls of the valve housing, has protruding latching lugs which engage in locking grooves in the valve housing when the RV cartridge is pushed into the valve housing. In the locked state, the RV cartridge is inserted into the valve housing in a sealing manner and fixed there. The RV cartridge can be installed both in a valve housing of a separately designed check valve and in a common valve housing for the regulating valve and check valve.

Alternativ oder zusätzlich kann der Rückschlagkörper elektronisch gesteuert sein. Hierfür sind in der Regel mindestens ein Sensor, ein Aktor und eine Steuerungseinheit vorgesehen. Der Sensor erfasst in der Regel eine charakteristische Größe der Ventilkombination aus Regulierventil und Rückschlagventil, wie beispielsweise den Druckabfall (Druck vor der Ventilkombination - Druck hinter der Ventilkombination) oder den Volumendurchfluss durch die Ventilkombination. Die Steuerungseinheit wertet für gewöhnlich die Signale des Sensors aus und steuert entsprechend den Aktor. Der Aktor greift üblicherweise unmittelbar oder mittelbar an dem Rückschlagkörper an und verstellt diesen in der Regel durch eine axiale Bewegung relativ zu dem Dichtsitz. Denkbar ist auch, dass der Rückschlagkörper federvorgespannt und elektronisch gesteuert ist. In diesem Fall kann der Rückschlagkörper zusätzlich zur Federkraft des Vorspannelementes beispielweise durch einen nach Art eines Blockadestifts, -plättchens oder -rings ausgebildeten Aktor in der Geschlossenstellung gehalten werden. Dabei ist es möglich, den Rückschlagkörper auch dann noch in der Geschlossenstellung zu halten, wenn der Wasserdruck bereits ausreicht, die Federkraft des Vorspannelementes zu überwinden. Zur Aufhebung der Blockade wird der Blockadestift, das Blockadeplättchen oder der Blockadering üblicherweise orthogonal zur Achse des Rückschlagkörpers zurückgefahren.Alternatively or additionally, the non-return body can be controlled electronically. For this purpose, at least one sensor, one actuator and one control unit are usually provided. The sensor usually detects a characteristic variable of the valve combination of regulating valve and check valve, such as the pressure drop (pressure in front of the valve combination - pressure behind the valve combination) or the volume flow through the valve combination. The control unit usually evaluates the signals from the sensor and controls the actuator accordingly. The actuator usually acts directly or indirectly on the non-return body and, as a rule, adjusts it by means of an axial movement relative to the sealing seat. It is also conceivable that the non-return body is spring-loaded and electronically controlled. In this case, the non-return body can be held in the closed position in addition to the spring force of the prestressing element, for example by an actuator designed in the manner of a blocking pin, plate or ring. It is possible to keep the non-return body in the closed position even when the water pressure is already sufficient to overcome the spring force of the pretensioning element. To remove the blockage, the blocking pin, the blocking plate or the blocking ring is usually retracted orthogonally to the axis of the non-return body.

Nach einer weiteren bevorzugten Weiterbildung der vorliegenden Erfindung ist das Rückschlagventil derart ausgebildet, dass es bei einem Volumenstrom durch das Regulierventil von 7 l/min ± 15 %, sehr bevorzugt ± 10 %, besonders bevorzugt ± 5 % öffnet. Als "Öffnen" ist dabei üblicherweise der Moment zu verstehen, in dem sich der Rückschlagkörper von dem Dichtsitz abhebt. In der Regel öffnet sich das Rückschlagventil bei diesem Volumenstrom noch nicht maximal.According to a further preferred development of the present invention, the check valve is designed such that it opens at a volume flow through the regulating valve of 7 l / min ± 15%, very preferably ± 10%, particularly preferably ± 5%. "Opening" is usually understood to mean the moment at which the non-return body lifts off from the sealing seat. As a rule, the check valve does not open to the maximum at this volume flow.

Nach einer weiteren bevorzugten Weiterbildung der vorliegenden Erfindung ist das Rückschlagventil derart eingerichtet, dass der Rückschlagkörper von einem Volumenstrom von 8 l/min ± 15%, sehr bevorzugt ± 10 %, besonders bevorzugt ± 5 % in einer maximal von dem Dichtsitz entfernten Stellung gehalten ist. Diese Stellung kann auch als Offenstellung verstanden werden, in der das Rückschlagventil maximal geöffnet ist.According to a further preferred development of the present invention, the check valve is set up in such a way that the check body is at a maximum distance from the sealing seat from a volume flow of 8 l / min ± 15%, very preferably ± 10%, particularly preferably ± 5% Position is held. This position can also be understood as an open position in which the check valve is open to the maximum.

Die Differenzdrücke, welche zu der Offenstellung des Rückschlagkörpers führen, liegen bevorzugt bei 50-700 hPa, sehr bevorzugt bei 100-500 hPa, besonders bevorzugt bei 250-300 hPa.The differential pressures which lead to the open position of the non-return body are preferably 50-700 hPa, very preferably 100-500 hPa, particularly preferably 250-300 hPa.

Nach einerweiteren bevorzugten Weiterbildung der vorliegenden Erfindung weist die Zirkulationsleitung mehrere Zirkulationsstränge auf, die jeweils mindestens einem Verbraucher zugeordnet und mit einer gemeinsamen Zirkulationssammelleitung der Zirkulationsleitung verbunden sind, in der die Zirkulationspumpe angeordnet und an das Spülventil angeschlossen ist. An dem in die Zirkulationsleitung leitenden Ende der Zirkulationsstränge ist jeweils ein Regulierventil und ein Rückschlagventil vorgesehen. Dabei kann die Zirkulationssammelleitung einen größeren Nenndurchmesser aufweisen als die Zirkulationsstränge. Insbesondere kann der Nenndurchmesser der Zirkulationsleitung dem der Versorgungsleitung, in der Regel DN 20, entsprechen.According to a further preferred development of the present invention, the circulation line has several circulation lines which are each assigned to at least one consumer and connected to a common circulation collecting line of the circulation line in which the circulation pump is arranged and connected to the flushing valve. A regulating valve and a check valve are provided at each end of the circulation lines leading into the circulation line. The circulation collecting line can have a larger nominal diameter than the circulation lines. In particular, the nominal diameter of the circulation line can correspond to that of the supply line, usually DN 20.

Ein hydraulischer Abgleich der einzelnen Stränge ist somit wie folgt gewährleistet. Stränge, in denen relativ viel Wasser gezapft wird, weisen in der Regel durch konstanten Austausch Wasser der gewünschten Temperatur auf. Das diesem Strang zugeordnete Regulierventil stellt dann über das thermische Stellelement einen relativ geringen KV-Wert ein. Stränge, in denen hingegen recht wenig Wasser gezapft wird, enthalten in der Regel mehr abgestandenes Wasser, das von der gewünschten Wassertemperatur abweicht. Das diesem Strang zugeordnete Regulierventil regelt dann für diesen Strang einen relativ hohen KV-Wert ein. Somit kann sichergestellt werden, dass auch die Stränge, aus denen wenig Wasser gezapft wird, ausreichend durchströmt werden. Gleichzeitig wird in an sich bekannter Weise ein hydraulischer Abgleich geschaffen derart, dass Verbraucher unabhängig von der Entfernung von dem Anschluss an das öffentliche Wasserversorgungsnetz gleichermaßen mit frischem Wasser gewünschter Temperatur versorgt werden.Hydraulic balancing of the individual lines is thus guaranteed as follows. Lines in which a relatively large amount of water is drawn usually have water at the desired temperature due to constant exchange. The regulating valve assigned to this branch then sets a relatively low KV value via the thermal control element. On the other hand, strands in which very little water is drawn usually contain more stale water that deviates from the desired water temperature. The regulating valve assigned to this branch then regulates a relatively high KV value for this branch. This ensures that the lines from which little water is drawn are adequately flowed through. At the same time, hydraulic balancing is created in a manner known per se in such a way that consumers are equally supplied with fresh water at the desired temperature regardless of the distance from the connection to the public water supply network.

Bevorzugt ist die Zirkulationspumpe dem Spülventil in Strömungsrichtung nachgelagert. Weiter bevorzugt ist in der Zirkulationssammelleitung ein Rückflussverhinderer vorgesehen, welcher der Zirkulationspumpe in Strömungsrichtung nachgelagert ist. Dabei hat der Rückflussverhinderer die Funktion zu verhindern, dass frisches Wasser aus dem Anschluss an das öffentliche Wasserversorgungsnetz in entgegengesetzter Richtung in das Trink- und Brauchwassersystem fließt. Die Zirkulationspumpe kann in der Regel bei einem Spülvorgang abgeschaltet werden.The circulation pump is preferably located downstream of the flushing valve in the direction of flow. More preferably, a backflow preventer is provided in the circulation manifold, which is located downstream of the circulation pump in the direction of flow. The function of the backflow preventer is to prevent fresh water from the connection to the public water supply network from flowing in the opposite direction into the drinking and service water system. The circulation pump can usually be switched off during a flushing process.

Nach einer weiteren bevorzugten Weiterbildung der vorliegenden Erfindung sind die elektronisch gesteuerten Rückschlagventile steuerungsmäßig mit einer Steuerungseinheit verbunden, mit der die Rückschlagventile unabhängig voneinander steuerbar sind. Insbesondere ist die Steuerungseinheit derart eingerichtet, dass die Rückschlagventile in einer vorbestimmten Reihenfolge geöffnet und wieder geschlossen werden können. In der Regel ist die Steuerungseinheit gleichsam mit dem Spülventil steuerungsmäßig verbunden, sodass die Steuerungseinheit einen Spülvorgang durch Öffnen des Spülventils initiiert, durch die Steuerung der Rückschlagventile reguliert und durch Schließen des Spülventils beendet. Vorzugsweise ist die Steuerungseinheit zur Ausführung eines Spülvorgangs eingerichtet, bei dem ein Wasserwechsel für das gesamte Trink- und Brauchwassersystem stattfindet. Dabei wird in der Regel mindestens das zwischen dem Anschluss an das öffentliche Wasserversorgungsnetz und dem Spülventil befindliche Volumen ausgetauscht. Die Steuerungseinheit kann derart eingerichtet sein, dass ein solcher Wasserwechsel sich periodisch wiederholt mit einer Periode von beispielsweise 72 Stunden.According to a further preferred development of the present invention, the electronically controlled check valves are connected in terms of control to a control unit with which the check valves can be controlled independently of one another. In particular, the control unit is set up in such a way that the check valves can be opened and closed again in a predetermined sequence. As a rule, the control unit is connected to the flushing valve in terms of control, so that the control unit initiates a flushing process by opening the flushing valve, regulates it by controlling the check valves and ends it by closing the flushing valve. The control unit is preferably set up to carry out a flushing process in which a water change takes place for the entire drinking and service water system. As a rule, at least the volume between the connection to the public water supply network and the flush valve is exchanged. The control unit can be set up in such a way that such a water change is repeated periodically with a period of, for example, 72 hours.

Nach einer weiteren bevorzugten Weiterbildung der vorliegenden Erfindung weist das Trink- und Brauchwassersystem einen Durchflusssensor auf. Dieser ist in der Regel dem Regulierventil und dem Rückschlagventil in Strömungsrichtung nachgelagert. Weist das erfindungsgemäße Trink- und Brauchwassersystem mehrere Zirkulationsstränge auf, ist der Durchflusssensor vorzugsweise in der Zirkulationssammelleitung vorgesehen. Meist ist der Durchflusssensor dem Spülventil zugeordnet und diesem in Strömungsrichtung vorgelagert. Dadurch kann die bei einem Spülvorgang gespülte Fluidmenge bestimmt werden. Üblicherweise sendet der Durchflusssensor die gemessenen Daten an die Steuerungseinheit. Die Steuerungseinheit wertet die gemessenen Daten aus, protokolliert sie und/oder lässt sie in die Steuerung eines Spülvorgangs mit einfließen. Die Durchflussmenge wird in der Regel über eine Integration des kontinuierlich gemessenen Volumenstroms über die Zeit berechnet. Die Steuerungseinheit kann beispielsweise derart eingerichtet sein, dass sie das Spülventil dann schließt, wenn nach dem Öffnen des Spülventils die berechnete Durchflussmenge dem Gesamtvolumen des Trink- und Brauchwassersystems entspricht.According to a further preferred development of the present invention, the drinking and service water system has a flow sensor. This is usually downstream of the regulating valve and the check valve in the direction of flow. If the drinking and service water system according to the invention has several circulation lines, the flow sensor is preferably provided in the circulation collecting line. Usually the flow sensor is assigned to the flushing valve and upstream of it in the direction of flow. In this way, the amount of fluid flushed during a flushing process can be determined. The flow sensor usually sends the measured data to the control unit. The control unit evaluates the measured data, logs them and / or allows them to flow into the control of a flushing process. The flow rate is usually calculated by integrating the continuously measured volume flow over time. The control unit can be set up, for example, in such a way that it closes the flush valve when, after the flush valve has been opened, the calculated flow rate corresponds to the total volume of the drinking and domestic water system.

Nach einer weiteren bevorzugten Weiterbildung der vorliegenden Erfindung weist das Trink- und Brauchwassersystem einen Durchflussmengenbegrenzer auf. Der Durchflussmengenbegrenzer ist üblicherweise dem Spülventil in Strömungsrichtung nachgelagert. Der Durchflussmengenbegrenzer verhindert für gewöhnlich einen zu hohen Druckabfall im Trink- und Brauchwassersystem während eines Spülvorgangs.According to a further preferred development of the present invention, the drinking and service water system has a flow rate limiter. The flow rate limiter is usually located downstream of the flushing valve in the direction of flow. The flow limiter usually prevents an excessive pressure drop in the drinking and service water system during a flushing process.

Bevorzugt ist ein dem Spülventil in Strömungsrichtung nachgelagerter Ablauf als ein freier Ablauf ausgebildet. Der freie Ablauf zeichnet sich in der Regel dadurch aus, dass Wasser eine Fallstrecke im Schwerefeld der Erde zurückgelegt, der entweder unmittelbar in der Umgebungsatmosphäre verläuft oder mit dieser atmosphärisch in Verbindung steht. So kann sicher vermieden werden, dass verunreinigtes oder hygienisch bedenkliches Wasser im Falle eines Unterdrucks in dem Wassersystem zurück in das Wassersystem gesogen wird. Insbesondere sind dadurch die Erfordernisse nach DIN EN 1717 zur Trennung von Trinkwasser der Kategorie 1 von Wasser der Kategorie 5 erfüllt. Für gewöhnlich entwässert der freie Ablauf in eine Abwasserleitung.A drain downstream of the flush valve in the flow direction is preferably designed as a free drain. The free flow is usually characterized by the fact that water has a fall section covered in the earth's gravitational field, which either runs directly in the surrounding atmosphere or is atmospherically connected to it. In this way it can be reliably avoided that contaminated or hygienically questionable water is sucked back into the water system in the event of a negative pressure in the water system. In particular, this fulfills the requirements of DIN EN 1717 for the separation of category 1 drinking water from category 5 water. Usually the free drain drains into a sewer.

Weiter bevorzugt ist dem freien Ablauf eine Überlaufüberwachung zugeordnet. Diese kommuniziert in der Regel mit der Steuerungseinheit und/oder dem Durchflussmengenbegrenzer, sodass bei einem drohenden Überlauf am freien Ablauf die Ausflussmenge aus dem Trink- und Brauchwassersystem reguliert bzw. reduziert werden kann. Zusätzlich oder alternativ kann die Überlaufüberwachung ein Warnsignal, beispielsweise optisch oder akustisch, ausgeben.Overflow monitoring is furthermore preferably assigned to the free flow. This usually communicates with the control unit and / or the flow rate limiter so that in the event of an impending overflow at the free outlet, the flow rate from the drinking and service water system can be regulated or reduced. Additionally or alternatively, the overflow monitoring can output a warning signal, for example optically or acoustically.

Nach einer weiteren bevorzugten Weiterbildung der vorliegenden Erfindung weist das Trink- und Brauchwassersystem einen Wassererhitzer, ein Kühlaggregat oder einen Wärmetauscher auf. Im Falle eines Kaltwassersystems ist ein Kühlaggregat oder ein Wärmetauscher zum Kühlen des Trinkwassers üblicherweise an der Mündung der Zirkulationsleitung bzw. der Zirkulationssammelleitung in die Versorgungsleitung vorgesehen. Dabei durchläuft das Trinkwasser in der Regel das Kühlaggregat oder den Wärmetauscher zum Kühlen bevor es wieder in die Versorgungsleitung gelangt. Im Falle eines Warmwassersystems ist ein Wassererwärmer oder ein Wärmetaucher zum Erwärmen des Trinkwassers in der Regel dem Anschluss an das öffentliche Wasserversorgungsnetz in Strömungsrichtung nachgelagert.According to a further preferred development of the present invention, the drinking and service water system has a water heater, a cooling unit or a heat exchanger. In the case of a cold water system, a cooling unit or a heat exchanger for cooling the drinking water is usually provided at the mouth of the circulation line or the circulation collecting line in the supply line. The drinking water usually runs through the cooling unit or the heat exchanger for cooling before it gets back into the supply line. In the case of a hot water system, a water heater or a heat exchanger for heating the drinking water is usually located downstream of the connection to the public water supply network in the direction of flow.

Weiter bevorzugt weist das Trink- und Brauchwassersystem nach der vorliegenden Erfindung eine Filtrationsanlage auf. Diese ist üblicherweise an die Zirkulationssammelleitung angeschlossen und der Zirkulationspumpe in Strömungsrichtung vor- oder nachgelagert. Beispielsweise kann die Filtrationsanlage an einen zwischen dem Rückflussverhinderer und dem Wärmetauscher (bzw. dem Wassererhitzer oder dem Kühlaggregat) verlaufenden Leitungsabschnitt oder an einen zwischen dem Spülventil und dem bzw. den Regulierventilen verlaufenden Leitungsabschnitt angeschlossen sein.The drinking and service water system according to the present invention also preferably has a filtration system. This is usually connected to the circulation manifold and upstream or downstream of the circulation pump in the direction of flow. For example, the filtration system can be connected to a line section running between the backflow preventer and the heat exchanger (or the water heater or the cooling unit) or to a line section running between the flushing valve and the regulating valve (s).

In der Regel ist die Filtrationsanlage eine Ultrafiltrationsanlage mit einer Membran, mit der sich makromolekulare Substanzen und kleine Partikel aus dem Trinkwasser abtrennen lassen. Man unterscheidet Mikrofiltration, Ultrafiltration und Nanofiltration über den Grad der Abtrennung. Liegt die Ausschlussgrenze (oder auch "Cut-off") bei 100 nm oder darüber, spricht man von Mikrofiltration. Liegt die Ausschlussgrenze in dem Bereich zwischen 2 und 100 nm, bezeichnet man dies als Ultrafiltration. Bei der Nanofiltration liegt die Ausschlussgrenze unterhalb von 2 nm. Die Ausschlussgrenzen werden üblicherweise in Form des NMWC (englisch: Nominal Molecular Weight Cut-Off, auch MWCO, Molecular Weight Cut Off, Einheit: Dalton) angegeben. Er ist definiert als die minimale Molekülmasse globulärer Moleküle, welche durch die Membran zu 90 % zurückgehalten werden.As a rule, the filtration system is an ultrafiltration system with a membrane, with which macromolecular substances and small particles can be separated from the drinking water. A distinction is made between microfiltration, ultrafiltration and nanofiltration based on the degree of separation. If the exclusion limit (or "cut-off") is 100 nm or more, it is called microfiltration. If the exclusion limit is in the range between 2 and 100 nm, this is called this as ultrafiltration. In nanofiltration, the exclusion limit is below 2 nm. The exclusion limits are usually specified in the form of the NMWC (Nominal Molecular Weight Cut-Off, also MWCO, Molecular Weight Cut Off, unit: Dalton). It is defined as the minimum molecular mass of globular molecules that are 90% retained by the membrane.

In der Regel wird die Ultrafiltrationsanlage mit der Dead-End-Methode betrieben, bei der die Membran den gesamten Volumendurchfluss durch die Zirkulationssammelleitung filtriert. So können Keime aus dem Trinkwasserkreislauf herausgefiltert werden.As a rule, the ultrafiltration system is operated with the dead-end method, in which the membrane filters the entire volume flow through the circulation manifold. In this way, germs can be filtered out of the drinking water cycle.

Von der Zirkulationspumpe wird das Trinkwasser in der Regel mit niedrigem Druck gegen die Membran gepumpt, sodass eine Kompaktierung zurückgehaltener Stoffe auf ein Minimum reduziert ist. Auf der Membran reichert sich für gewöhnlich ein Filterkuchen (Deckschicht oder Fouling) aus den abgetrennten Partikeln an. Der Filterkuchen erhöht den Filtrationswiderstand und damit den Druckverlust über die Membran. Er muss üblicherweise regelmäßig durch Rückspülung (Zurückpumpen von bereits abgetrenntem Medium) und/oder chemischen Reinigungen entfernt und das Filterelement somit regeneriert werden.The drinking water is usually pumped against the membrane at low pressure by the circulation pump, so that any compaction of retained substances is reduced to a minimum. A filter cake (cover layer or fouling) from the separated particles usually accumulates on the membrane. The filter cake increases the filtration resistance and thus the pressure loss across the membrane. It usually has to be removed regularly by backwashing (pumping back of the medium that has already been separated off) and / or chemical cleaning and the filter element thus regenerated.

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

Figur 1
schematische Darstellung eines Trink- und Brauchwassersystems nach einem Ausführungsbeispiel der vorliegenden Erfindung,
Figur 2
eine Längsschnittansicht eines Regulierventils eines anderen Ausführungsbeispiels,
Figur 3
ein vergrößerter Ausschnitt aus Fig. 2 bei geschlossenem Rückschlagventil und
Figur 4
die Darstellung nach Fig. 3 bei geöffnetem Rückschlagventil.
Further details and advantages of the present invention emerge from the following description of exemplary embodiments in conjunction with the drawing. In this show:
Figure 1
schematic representation of a drinking and service water system according to an embodiment of the present invention,
Figure 2
a longitudinal sectional view of a regulating valve of another embodiment,
Figure 3
an enlarged section Fig. 2 with the non-return valve closed and
Figure 4
the representation after Fig. 3 with the check valve open.

Die Figur 1 zeigt eine schematische Ansicht eines Ausführungsbeispiels eines Trink- und Brauchwassersystems eines nicht näher gezeigten Gebäudes. Das Trink- und Brauchwassersystem des Gebäudes hat einen Anschluss 2 an das öffentliche Wasserversorgungsnetz, um das Gebäude mit Frischwasser zu versorgen. Bei diesem Frischwasser handelt es sich üblicherweise um Kaltwasser, das innerhalb des Gebäudes zu warmem Trink- bzw. Brauchwasser aufbereitet oder direkt als kaltes Brauchwasser für beispielsweise die Toilettenspülung oder einen Kaltwasserhahn verwendet werden kann. Das in Figur 1 gezeigte Trink- und Brauchwassersystem ist als Kaltwassersystem ausgelegt.The Figure 1 shows a schematic view of an embodiment of a drinking and service water system of a building not shown in detail. The building's drinking and service water system has a connection 2 to the public water supply network in order to supply the building with fresh water. This fresh water is usually cold water that can be converted into warm drinking or service water within the building or used directly as cold service water for, for example, flushing the toilet or a cold water tap. This in Figure 1 The drinking and service water system shown is designed as a cold water system.

Über den Anschluss 2 an das öffentliche Wasserversorgungsnetz wird eine Versorgungsleitung 4 gespeist, die als Steigstrang ausgebildet ist. Der Steigstrang 4 erstreckt sich über drei Stockwerke, wobei in jedem Stockwerk ein Versorgungsstrang 6 von dem Steigstrang 4 abzweigt. Der Steigstrang 4 und die Versorgungsstränge 6 sind auf einen Nenndurchmesser von DN 20 ausgelegt. In jedem der Stockwerke ist an den Versorgungsstrang 6 ein Verbraucher 8 angeschlossen. In dem obersten Stockwerk A ist dieser Anschluss ein T-Stück-Anschluss 10. In dem mittleren Stockwerk B ist der Anschluss über einen Strömungsteiler 12 realisiert. In dem unteren Stockwerk C ist der Versorgungsstrang 6C zwischen den Verbrauchern 8C1, 8C2, 8C3, 8C4 durchgeschleift. An die Verbraucher schließt sich in jedem Stockwerk jeweils ein Zirkulationsstrang 14 an. In den Zirkulationssträngen 14 wird Wasser, welches von den Verbrauchern 8 nicht verbraucht wird, in eine Zirkulationssammelleitung 16 geleitet, an welche die Zirkulationsstränge 14 angeschlossen sind. Die Zirkulationssammelleitung 16 ist dabei in der gleichen Etage wie der Anschluss 2 an das öffentliche Wasserversorgungsnetz vorgesehen. Die Zirkulationssammelleitung 16 mündet in die Versorgungsleitung 4, wobei vor der Mündung 18 ein Wärmetauscher 20 angeordnet ist. Ein Arbeitsmedium auf der Primärseite 22 des Wärmetauschers 20 nimmt dabei thermische Energie des Trinkwassers auf, das die Sekundärseite 24 des Wärmetauschers 20 durchläuft, wodurch sich das Trinkwasser abkühlt. Über eine Zirkulationspumpe 26, die in der Zirkulationssammelleitung 16 angeordnet ist, wird das Trinkwasser in diesem geschlossenen Kreislauf in einer ständigen Zirkulation gehalten. Die Richtung der Zirkulationsströmung ist in der Figur 1 mit einem Pfeil Z hervorgehoben. Eine Fließrichtung entgegen dieser Zirkulationsströmung wird durch einen Rückflussverhinderer 28 verhindert, der in Strömungsrichtung der von der Zirkulationspumpe 26 initiierten Zirkulationsströmung nachgelagert in der Zirkulationssammelleitung 17 angeordnet ist.A supply line 4, which is designed as a riser, is fed via the connection 2 to the public water supply network. The riser 4 extends over three floors, with a supply line 6 branching off from the riser 4 on each floor. The riser 4 and the supply lines 6 are designed for a nominal diameter of DN 20. A consumer 8 is connected to the supply line 6 in each of the floors. In the top floor A, this connection is a T-piece connection 10. In the middle floor B, the connection is implemented via a flow divider 12. On the lower floor C, the supply line 6C is looped through between the consumers 8C1, 8C2, 8C3, 8C4. A circulation line 14 is connected to the consumers on each floor. In the circulation lines 14, water which is not consumed by the consumers 8 is passed into a circulation collecting line 16 to which the circulation lines 14 are connected. The circulation manifold 16 is provided on the same floor as the connection 2 to the public water supply network. The circulation collecting line 16 opens into the supply line 4, a heat exchanger 20 being arranged in front of the opening 18. A working medium on the primary side 22 of the heat exchanger 20 absorbs thermal energy from the drinking water which passes through the secondary side 24 of the heat exchanger 20, whereby the drinking water cools down. The drinking water is kept in constant circulation in this closed circuit via a circulation pump 26, which is arranged in the circulation collecting line 16. The direction of the circulation flow is in the Figure 1 highlighted with an arrow Z. A flow direction contrary to this circulation flow is prevented by a backflow preventer 28, which is arranged downstream in the flow direction of the circulation flow initiated by the circulation pump 26 in the circulation collecting line 17.

In Richtung der Zirkulationsströmung Z ist dem Rückflussverhinderer28 eine Ultrafiltrationsanlage 29 nachgelagert. Die Ultrafiltrationsanlage 29 enthält eine Membran, die durch die Pumpleistung der Zirkulationspumpe 26 angeströmt wird und Keime oder sonstige Partikel von dem Trinkwasser abtrennt. Die Ultrafiltrationsanlage 29 kann alternativ dem Spülventil 16 in Richtung der Zirkulationsströmung Z vorgelagert sein, sodass auch das aus dem System abgelassene Wasser filtriert wird. Dadurch wird das Abwasser weniger belastet.In the direction of the circulation flow Z, the backflow preventer 28 is followed by an ultrafiltration system 29. The ultrafiltration system 29 contains a membrane which is flown against by the pumping power of the circulation pump 26 and which separates germs or other particles from the drinking water. The ultrafiltration system 29 can alternatively be upstream of the flushing valve 16 in the direction of the circulation flow Z, so that the water drained from the system is also filtered. This means that the wastewater is less polluted.

An den Einkopplungsstellen der Zirkulationsstränge 14 in die Zirkulationssammelleitung 16 ist in diesen jeweils ein Regulierventil 30 angeordnet, in das ein elektronisch gesteuertes Rückschlagventil integriert ist. Die Regulierventile 30 sind jeweils mit einer Steuerungseinheit 32 steuerungsmäßig verbunden. Diese ist gleichermaßen steuerungsmäßig mit einem Spülventil 34 verbunden, welches an die Zirkulationssammelleitung 16 in Strömungsrichtung der Zirkulationspumpe 26 vorgelagert angeschlossen ist. Durch Öffnen des Spülventils 34 ist Wasser über einen dem Spülventil 34 zugeordneten freien Ablauf 36 aus dem Trink- und Brauchwassersystem ablassbar. Dabei legt das Wasser eine freie Fallstrecke in der Umgebungsatmosphäre zurück, bevor es über eine Abwasserleitung abfließt. Dem freien Ablauf 36 ist eine Überlaufüberwachung 38 und dem Spülventil 34 ein Durchflusssensor 40 zugeordnet. Sowohl die Überlaufüberwachung 38 also auch der Durchflusssensor 40 kommunizieren mit der Steuerungseinheit 32, die die Signale verwertet. Des Weiteren ist zur Vermeidung von zu starken Druckabfällen im Trink- und Brauchwassersystem während eines Spülvorgangs an dem freien Ablauf 36 ein Durchflussmengenbegrenzer 42 angeordnet.A regulating valve 30, in which an electronically controlled non-return valve is integrated, is arranged at the coupling points of the circulation lines 14 into the circulation collecting line 16. The regulating valves 30 are each connected to a control unit 32 for control purposes. This is likewise connected in terms of control to a flushing valve 34 which is connected upstream of the circulation collecting line 16 in the flow direction of the circulation pump 26. By opening the flush valve 34, water is passed through a flush valve 34 associated free drain 36 can be drained from the drinking and industrial water system. The water covers a free fall distance in the surrounding atmosphere before it flows off via a sewer pipe. An overflow monitor 38 is assigned to the free outlet 36 and a flow sensor 40 is assigned to the flushing valve 34. Both the overflow monitor 38 and the flow sensor 40 communicate with the control unit 32, which evaluates the signals. Furthermore, in order to avoid excessive pressure drops in the drinking and service water system during a flushing process, a flow rate limiter 42 is arranged on the free drain 36.

Die Steuerungseinheit 32 ist auch steuerungsmäßig mit der Zirkulationspumpe 26 verbunden, sodass die Pumpe vor bzw. während eines Spülvorgangs abgeschaltet werden kann. Die Steuerungseinheit 32 initiiert einen solchen Spülvorgang durch Öffnen des Spülventils 34. Die Regulierventile 30 beinhalten ein Rückschlagventil, das jedoch erst bei Erreichen eines Mindestvolumenstroms von mindestens ca. 7 l/min von der Steuerungseinheit 32 geöffnet wird. So kann während eines Spülvorgangs ein ausreichender Wasseraustausch gewährleistet werden. Das Rückschlagventil bzw. die Steuerungseinheit 32 ist dabei derart ausgelegt, dass ein von der Zirkulationspumpe 26 initiierte Zirkulationsströmung das Rückschlagventil nicht öffnet.The control unit 32 is also connected in terms of control to the circulation pump 26, so that the pump can be switched off before or during a flushing process. The control unit 32 initiates such a flushing process by opening the flushing valve 34. The regulating valves 30 contain a non-return valve which, however, is only opened by the control unit 32 when a minimum volume flow of at least approx. 7 l / min is reached. In this way, sufficient water exchange can be guaranteed during a rinsing process. The check valve or the control unit 32 is designed in such a way that a circulation flow initiated by the circulation pump 26 does not open the check valve.

In dem Regulierventil 30 ist auch ein thermisches Ventil mit einem Dehnstoffelement vorgesehen, das eine Durchflussöffnung durch das Regulierventil abhängig von der Wassertemperatur reguliert, dessen Details auch der Figur 2 zu entnehmen sind, die indes ein Regulierventil 43 mit einem in einen Bypass integrierten federvorgespannten Rückschlagventil 44 zeigt.In the regulating valve 30, a thermal valve with an expansion element is also provided, which regulates a flow opening through the regulating valve depending on the water temperature, the details of which are also provided Figure 2 can be seen, which, however, shows a regulating valve 43 with a spring-loaded check valve 44 integrated in a bypass.

Das Regulierventil 43 hat ein Ventilgehäuse 48 mit einem Einlass-Anschluss 50 und einem Auslass-Anschluss 52. In Fig. 2 ist mit dem Pfeil Z die Zirkulationsrichtung angegeben. Diese stimmt mit der Strömungsrichtung während eines Spülvorgangs überein. Die äußere Markierung zeigt in diese Richtung, ist in der Schnittansicht aber nicht zu erkennen.The regulating valve 43 has a valve housing 48 with an inlet connection 50 and an outlet connection 52. In Fig. 2 the direction of circulation is indicated by the arrow Z. This corresponds to the direction of flow during a flushing process. The outer marking points in this direction, but cannot be seen in the sectional view.

Das Ventilgehäuse 48 bildet eine stutzenförmige Aufnahme 54 für einen mit Bezugszeichen 56 gekennzeichneten Ventileinsatz aus. Die Aufnahme 54 wird durch ein Ventiloberteil gebildet, welches mit seinem Außengewinde in ein Innengewinde des Ventilgehäuses 48 eingeschraubt ist. Der Ventileinsatz 56 hat eine Aufnahme für ein Dehnstoffelement 58 eines Thermostatreglers 60. Das Dehnstoffelement 58 wirkt auf einen Teller 62 ein, der gegen die Kraft einer Feder 64 in Richtung auf das Dehnstoffelement 58 vorgespannt gehalten ist. Mit dem Teller 62 ist ein Stößel 66 gekoppelt, der ein Stellglied 68 trägt. Durch Verschrauben einer Verstellkappe 70 des Thermostatreglers 60 kann der Stößel 66 und damit das Thermostatventil voreingestellt werden. In Figur 2 ist diese Verstellkappe 70 von einer Schutzkappe 72 überzogen.The valve housing 48 forms a socket-shaped receptacle 54 for a valve insert identified by reference numeral 56. The receptacle 54 is formed by an upper valve part which is screwed with its external thread into an internal thread of the valve housing 48. The valve insert 56 has a receptacle for an expansion element 58 of a thermostat regulator 60. The expansion element 58 acts on a plate 62 which is held in a pretensioned manner against the force of a spring 64 in the direction of the expansion element 58. A tappet 66, which carries an actuator 68, is coupled to the plate 62. By screwing an adjustment cap 70 of the thermostat regulator 60, the plunger 66 and thus the thermostatic valve can be preset. In Figure 2 this adjustment cap 70 is covered by a protective cap 72.

Das Ventilgehäuse 48 bildet ferner einen Anschlussstutzen zum dichtenden Verschrauben eines Entleerungsstopfens 74 aus. Des Weiteren ist ein Absperrventil 76 vorgesehen, welches handbetätigbar ist, um das Regulierventil 70 durch Anlegen des Absperrventils 76 gegen einen Geradsitz 78 manuell abzusperren.The valve housing 48 also forms a connection piece for screwing together an emptying plug 74 in a sealing manner. Furthermore, a shut-off valve 76 is provided, which can be manually operated in order to manually shut off the regulating valve 70 by placing the shut-off valve 76 against a straight seat 78.

Weitere Details des Regulierventils 43 sind in den Fig. 3 und 4 dargestellt, auf die nachfolgend Bezug genommen wird.Further details of the regulating valve 43 are in the Figures 3 and 4 to which reference is made below.

Das Ventilgehäuse 48 bildet einen mit Bezugszeichen 80 gekennzeichneten Ventilsitz aus, der zwischen sich und dem Stellglied 68 eine Durchflussöffnung 82 freilässt. In den Figuren 3 und 4 ermöglicht diese Durchflussöffnung 82 einen Zirkulations-Volumenstrom. Das Ventilgehäuse 48 formt ferner in Verlängerung des Anschlusses 52 einen Bypass 84 aus, der als Durchgangsbohrung zwischen dem Stößel 66 und dem Anschluss 52 ausgeformt ist. In diesen Bypass 84 ist eine RV-Patrone 86 mit einer federvorgespannt gehaltenen Ventilkappe 88 vorgesehen. Die RV-Patrone 86 ist dichtend in den Bypass 84 eingesetzt. Das Ventilgehäuse 48 bildet eine Umfangsnut aus, in welcher Rastvorsprünge 90 der RV-Patrone 86 in Eingriff sind, um die RV-Patrone 86 zu verriegeln, die auf der gegenüberliegenden Seite gegen einen durch das Ventilgehäuse 48 geformten Ringvorsprung anliegt. Die RV-Patrone 86 ist gegenüber dem Ventilgehäuse 48 außenumfänglich abgedichtet.The valve housing 48 forms a valve seat identified by reference numeral 80, which leaves a flow opening 82 free between it and the actuator 68. In the Figures 3 and 4 this throughflow opening 82 enables a circulation volume flow. The valve housing 48 also forms a bypass 84 as an extension of the connection 52, which bypass is formed as a through-hole between the tappet 66 and the connection 52. In this bypass 84, a RV cartridge 86 is provided with a valve cap 88 held in a spring-loaded manner. The RV cartridge 86 is sealingly inserted into the bypass 84. The valve housing 48 forms a circumferential groove in which locking projections 90 of the RV cartridge 86 are engaged in order to lock the RV cartridge 86, which rests on the opposite side against an annular projection formed by the valve housing 48. The RV cartridge 86 is sealed on the outside of the valve housing 48.

Die RV-Patrone 86 enthält bei diesem Ausführungsbeispiel das Rückschlagventil 44. Bei einer Zirkulationsströmung Z gemäß Fig. 3 verschließt das RV-Ventil 44 den Bypass 84, sofern ein Mindestvolumensystem nicht erreicht ist aufgrund der Federvorspannung. Bei einer Strömung in entgegengesetzter Richtung verschließt die RV-Patrone 86 den Bypass 84 aufgrund der Federvorspannung und des Wasserdrucks in Kombination mit der Geometrie der Ventilkappe 88.In this exemplary embodiment, the RV cartridge 86 contains the check valve 44. In the case of a circulation flow Z according to FIG Fig. 3 the RV valve 44 closes the bypass 84 if a minimum volume system is not reached due to the spring preload. In the event of a flow in the opposite direction, the RV cartridge 86 closes the bypass 84 due to the spring preload and the water pressure in combination with the geometry of the valve cap 88.

Erreicht ein Volumenstrom durch das Regulierventil 43 einen Wert im Bereich von 7-8 l/min, so öffnet sich das RV-Ventil 44 und lässt eine Spülströmung S durch. Diese Spülströmung S überbrückt im Wesentlichen die Durchflussöffnung 82.If a volume flow through the regulating valve 43 reaches a value in the range of 7-8 l / min, the RV valve 44 opens and lets a flushing flow S through. This flushing flow S essentially bridges the throughflow opening 82.

Das Regulierventil nach Figur 2 ist autark, d.h. nicht elektronisch gesteuert einsetzbar.The regulating valve after Figure 2 is self-sufficient, ie cannot be used electronically controlled.

BezugszeichenlisteList of reference symbols

22
Anschluss an das öffentliche WasserversorgungsnetzConnection to the public water supply network
44th
Versorgungsleitungsupply line
66th
VersorgungsstrangSupply line
88th
Verbraucherconsumer
1010
T-Stück-AnschlussT-piece connection
1212th
StrömungsteilerFlow divider
1414th
ZirkulationsstrangCirculation line
1616
ZirkulationssammelleitungCirculation manifold
1818th
Mündung in VersorgungsleitungConnection to the supply line
2020th
WärmetauscherHeat exchanger
2222nd
PrimärseitePrimary side
2424
SekundärseiteSecondary side
2626th
ZirkulationspumpeCirculation pump
2828
RückflussverhindererBackflow preventer
2929
UltrafiltrationsanlageUltrafiltration system
3030th
RegulierventilRegulating valve
3232
SteuerungseinheitControl unit
3434
SpülventilFlush valve
3636
freier Ablauffree flow
3838
ÜberlaufüberwachungOverflow monitoring
4040
DurchflusssensorFlow sensor
4242
DurchflussmengenbegrenzerFlow limiter
4343
RegulierventilRegulating valve
4444
Rückschlagventilcheck valve
4848
VentilgehäuseValve body
5050
Einlass-AnschlussInlet connection
5252
Auslass-AnschlussOutlet connection
5454
stutzenförmige Aufnahmesocket-shaped receptacle
5656
VentileinsatzValve insert
5858
DehnstoffelementExpansion element
6060
ThermostatreglerThermostat regulator
6262
TellerPlate
6464
Federfeather
6666
StößelPlunger
6868
StellgliedActuator
7070
VerstellkappeAdjustment cap
7272
Schutzkappeprotective cap
7474
EntleerungsstopfenDrain plug
7676
AbsperrventilShut-off valve
7878
GeradsitzStraight seat
8080
VentilsitzValve seat
8282
DurchflussöffnungFlow opening
8484
Bypassbypass
8686
RV-PatroneZippered cartridge
8888
VentilkappeValve cap
9090
RastvorsprüngeLocking projections
A,B,CABC
Stockwerkfloor
SS.
SpülströmungPurge flow
ZZ
ZirkulationsströmungCirculation flow

Claims (14)

  1. Drinking and service water system, comprising a connection (2) to the public water supply network, via which connection at least one supply line (4, 6) leading to at least one consumer (8) is fed with fresh water,
    a flushing valve (34) downstream of the consumer (8) in the flow direction for draining water from the drinking and service water system,
    a circulation line (14, 16) and a circulation pump (26) arranged in the circulation line (14, 16) for returning unused water,
    and a regulating valve (30, 43) which is provided in the circulation line (14, 16), is arranged between the consumer (8) and the flushing valve (34), and has an adjustment element (58) that is controlled by the water temperature as an actuator (68) for a valve body of the regulating valve (30, 43) and interacts with a valve seat (80),
    characterised by a check valve (44) which is intended to bypass the valve seat and opens in the direction of a circulatory flow (Z) initiated by the circulation pump (26).
  2. Drinking and service water system according to claim 1, characterised in that the check valve (44) opens when the volumetric flow rate through the regulating valve (30, 43) is 7 I/min ± 15%.
  3. Drinking and service water system according to either claim 1 or claim 2, characterised in that the check valve (44) is designed in such a way that it is held in an open position by a volumetric flow rate of 8 l/min ± 15% through the regulating valve (30, 43).
  4. Drinking and service water system according to any of the preceding claims, characterised in that the check valve (44) has a pretension element which is pretensioned counter to the circulatory flow (Z).
  5. Drinking and service water system according to claim 4, characterised in that the pretension of the pretension element is adjustable.
  6. Drinking and service water system according to any of the preceding claims, characterised in that the check valve (44) can be electronically controlled by a control unit (32).
  7. Drinking and service water system according to any of the preceding claims, characterised in that the circulation line (14, 16) has a plurality of circulation branches (14) which are each assigned to at least one consumer (8) and are connected to a common circulation manifold (16) of the circulation line, in which the circulation pump (26) is arranged and to which the flushing valve (34) is joined, and in that a regulating valve (30, 43) and a check valve (44) are provided at the end of the circulation branches (14) that leads into the circulation manifold (16) in each case.
  8. Drinking and service water system according to claim 7, characterised in that the circulation pump (26) is downstream of the flushing valve (34) in the flow direction, and in that a non-return valve (28), which is downstream of the circulation pump (26) in the flow direction, is provided in the circulation manifold (16).
  9. Drinking and service water system according to claims 6 and 7 or according to claims 6 and 8, characterised in that the check valves (44) can be controlled by the control unit (32) independently of one another.
  10. Drinking and service water system according to any of the preceding claims, characterised by a flow sensor (40).
  11. Drinking and service water system according to any of the preceding claims, characterised by a flow rate limiter (42) assigned to the flushing valve (34).
  12. Drinking and service water system according to any of the preceding claims, characterised by a free drain (36) assigned to the flushing valve (34).
  13. Drinking and service water system according to any of the preceding claims, characterised by an overflow monitor (38) which is provided at the free drain (36).
  14. Drinking and service water system according to any of the preceding claims, characterised by a heat exchanger (20).
EP19210407.3A 2018-11-30 2019-11-20 Drinking and domestic water system Active EP3660234B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202018005578.6U DE202018005578U1 (en) 2018-11-30 2018-11-30 Drinking and process water system

Publications (2)

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EP3660234A1 EP3660234A1 (en) 2020-06-03
EP3660234B1 true EP3660234B1 (en) 2021-03-10

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Application Number Title Priority Date Filing Date
EP19210407.3A Active EP3660234B1 (en) 2018-11-30 2019-11-20 Drinking and domestic water system

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EP (1) EP3660234B1 (en)
DE (2) DE202018005578U1 (en)
DK (1) DK3660234T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU102008B1 (en) * 2020-08-21 2022-02-21 Wilo Se Compact unit for a water circulation
DE202021101228U1 (en) 2021-03-11 2021-03-22 Gebr. Kemper Gmbh + Co. Kg Drinking water installation
DE202021103213U1 (en) 2021-06-15 2022-09-23 Gebr. Kemper Gmbh + Co. Kg Drinking and service water system
DE202023102295U1 (en) 2023-04-27 2024-08-01 Gebr. Kemper Gmbh + Co. Kg Drinking and service water system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT228018B (en) * 1961-01-18 1963-06-25 Hoerbiger Ventilwerke Ag Valve combination
DE29823960U1 (en) * 1998-07-27 2000-02-24 Metallwerke Neheim Goeke & Co Gmbh, 59755 Arnsberg Valve for hot water systems
DE10056715C5 (en) 2000-11-15 2008-03-06 F.W. Oventrop Gmbh & Co. Kg Valve for hot water systems
DE10226289C1 (en) 2002-06-13 2003-12-11 Kemper Gebr Gmbh & Co Kg Regulating valve, for hot water circulation system in multi-storey building, has housing fitted with regulating capsule with two thermostat elements controlled by circulated water temperature
DE102006017807B4 (en) * 2006-04-13 2013-10-24 Gebr. Kemper Gmbh & Co. Kg Metallwerke Drinking water system and method for operating such a system
DE202010003376U1 (en) * 2010-03-09 2011-08-01 Gebrüder Kemper GmbH + Co Metallwerke Drinking and process water system
DE102011010840B4 (en) 2011-02-10 2019-08-14 Oventrop Gmbh & Co. Kg Drinking or service water system
DE202015006366U1 (en) * 2015-09-07 2016-12-08 Gebr. Kemper Gmbh + Co. Kg Metallwerke Drinking water and service water supply of a building and regulating valve therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DK3660234T3 (en) 2021-06-07
DE202018005578U1 (en) 2020-03-04
DE102019217903A1 (en) 2020-06-04
EP3660234A1 (en) 2020-06-03

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