EP3712512A1 - Dispositif et procédé de fourniture d'eau potable chaude - Google Patents

Dispositif et procédé de fourniture d'eau potable chaude Download PDF

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Publication number
EP3712512A1
EP3712512A1 EP20162107.5A EP20162107A EP3712512A1 EP 3712512 A1 EP3712512 A1 EP 3712512A1 EP 20162107 A EP20162107 A EP 20162107A EP 3712512 A1 EP3712512 A1 EP 3712512A1
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EP
European Patent Office
Prior art keywords
water
filter
circulation line
water treatment
protection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20162107.5A
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German (de)
English (en)
Inventor
Klaus Leiter
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.)
Wcr Technologie GmbH
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Wcr Technologie GmbH
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Filing date
Publication date
Application filed by Wcr Technologie GmbH filed Critical Wcr Technologie GmbH
Publication of EP3712512A1 publication Critical patent/EP3712512A1/fr
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale

Definitions

  • the invention relates to a device for providing warm drinking water according to the preamble of claim 1. Furthermore, the invention relates to a water treatment device for such a device and a method for treating warm drinking water according to the preamble of claim 17.
  • the object of the invention is to provide an improved device for providing warm drinking water, a suitable water treatment device and a corresponding method with which it is possible to prevent the formation of germs, particularly harmful ones, even at relatively low hot water temperatures (preferably below 60 ° C) Legionella and / or curb or completely suppress the deposition of biomass.
  • the basic idea of the invention is to use a combination of filter and limescale protection device to achieve a synergistic effect and thus to greatly reduce or completely prevent the deposition of biomass and / or the multiplication of germs, especially legionella, which is harmful to health, in drinking water even if the drinking water temperature is below 60 ° C.
  • the limescale protection device can prevent or at least reduce the formation of limescale deposits on the surfaces of water-bearing elements, so that these surfaces remain smooth and thus the accumulation and formation of biomass and / or germs is reduced or completely prevented. This also applies in particular to the system or nucleation in the filter itself.
  • limescale protection device due to the filter, less biomass and / or other suspended matter accumulate on the active surfaces of the limescale protection device, which means that it can work effectively for a long time. Limescale protection device and filter thus help each other in the sense of a synergy effect.
  • limescale protection devices that work on the principle of heterogeneous catalysis can be used as limescale protection devices.
  • a limescale protection device has a modified, weakly acidic ion exchange material for catalytic lime precipitation, preferably in the Ca form, as a water-treated substance.
  • limescale protection devices can also be used.
  • the water is really softened in the chemical sense through the exchange of ions.
  • no ion exchange takes place during the lime precipitation. Rather, this takes place catalytically.
  • the filter preferably has a membrane whose pore size is below 0.2 ⁇ m, preferably below 0.1 ⁇ m.
  • Such filters are also known as ultrafiltration filters.
  • they can have membranes made of organic material and / or of ceramic material.
  • the membrane will be built up asymmetrically with a carrier layer (for example fleece), a porous support layer and the actual filtering membrane on top.
  • a carrier layer for example fleece
  • a porous support layer for example fleece
  • the actual filtering membrane on top.
  • other structures of membranes are also quite conceivable and possible.
  • ceramic membranes have a well-defined pore structure. They can also be completely freed from organic residues by "annealing" without suffering as a result. They can therefore be recycled for a long time.
  • ceramic membranes have a high temperature resistance and high material compatibility when used in drinking water.
  • the filter Even if the combination according to the invention of the filter with a limescale protection device prevents the filter from clogging due to the build-up of limescale, the filter is generally clogged with the substances to be filtered out over a certain period of time.
  • the filter can therefore preferably be regenerated, preferably without removing it, by simply flushing it. Either in the normal forward direction or by reversing the direction of flow.
  • An electronic control device can also regulate this backwashing or flushing automatically via the filter as a function of system parameters, such as the pressure drop, for example.
  • this electronic control device can control a so-called thermal disinfection cycle in which the filter and the limescale protection device are at least temporarily brought to an elevated temperature, namely above 60 ° C, preferably above 75 ° C.
  • a heating device is provided, which can also preferably be formed in the limescale protection device itself.
  • Suitable pipes and valves can be used to ensure that both elements, namely the limescale protection device and the filter, are effectively traversed by hot water and thus successfully disinfected in order to completely eradicate the germs reduced by the measure according to the invention.
  • the device shown for providing warm drinking water has a water heater 1 which has a warm water heating device 2 and a heat exchanger 3.
  • the hot water heating device 2 can also be arranged in a decentralized manner (district heating).
  • the heat exchanger 3 heats the drinking water fed in via the cold water inlet, which is then fed to an extraction fitting 6 via the hot water inlet 5.
  • an extraction fitting 6 via the hot water inlet 5.
  • Fig. 1 For the sake of simplicity, only one extraction fitting 6 is shown as an example.
  • a circulation line 7 with a circulation pump 8 leads back to the inlet of the heat exchanger 3.
  • a small flow of water flows back to the heat exchanger 3 via the circulation line 7, so that water at a high temperature is always available in the entire line system 5, 7 stands, so that when opening the extraction fitting 6 one does not have to wait long until any cooled water can be withdrawn from the hot water flow.
  • a water treatment device is connected to the circulation line.
  • An inlet connection 10 and an outlet connection 11 are then provided.
  • Valves 12, which are electronically controllable in particular by a control device (not shown), can be used to easily regulate how much water is currently flowing through the circulation line and how much water is flowing through the water treatment device 9. It is possible to take a partial flow from the circulation line or, in certain operating states, to route all of the water in the circulation line via the water treatment device.
  • the water treatment device 9 has a filter 13 (in this exemplary embodiment an ultrafiltration filter UF) and a limescale protection device 14, KS.
  • a device 15, TD for thermal disinfection is also provided. Material that has been flushed out during a flushing process of the filter 13 can reach a drain 17 via a flushing drain line 16.
  • the Fig. 2 shows a first variant of how the individual components within the water treatment device 9 are flowed through by the partial flow of the drinking water in the circulation line.
  • the exemplary embodiment shown is flowed through in series through the limescale protection device and the filter designed as an ultrafiltration filter, it also being possible to arrange the ultrafiltration filter 13 upstream of the limescale protection device 14 in the direction of flow.
  • the ultrafiltration filter 13 can be backwashed for cleaning purposes via a backwash line 18, the contaminated rinsing water being discharged via the lines 16, 17.
  • the limescale protection device itself can contain a preferably granular ion exchange material and, for example, be designed as the EP 0 957 066 B1 shows.
  • the limescale protection device has a modified, weakly acidic ion exchange material for catalytic lime precipitation, which is preferably present in the Ca form as a water-treating substance.
  • the use of chemical treatment substances and thus the contamination of drinking water can be prevented by catalytic precipitation.
  • An embodiment is particularly preferred in which the ion exchange material has functional groups on its surface which are charged with counter-ions, the counter-ions preferably being cations and in particular Ca 2+ ions. Functional groups which contain carboxylate are suitable as weakly acidic ion exchange material.
  • limescale protection devices can also be used.
  • the filter 13 is preferably constructed as an ultrafiltration filter which has at least one membrane, which is preferably arranged in a tubular shape and is flowed through from the inside to the outside.
  • the pore size of the ultrafiltration filter or the membrane (membranes) arranged therein is below 0.2 ⁇ m, preferably below 0.1 ⁇ m.
  • the typical transmembrane pressures are between 0.01 bar and 5 bar, preferably between 0.1 bar and 1 bar.
  • the ultrafiltration filter can also be used to remove the smallest, disruptive contaminations from the water, in particular biomass and other suspended matter, but also directly germs, bacteria and viruses.
  • the filter can be used over a longer period of time, it can be designed to be flushable or backflushable in order to convey the substances retained in the filter to the outside in a flushing process.
  • the limescale protection device 14 can be designed to be flushable or backflushable.
  • the in Fig. 3 A flushing line 20 with a flushing pump 19 is provided, which can lead a partial flow or the entire water flow through the ultrafiltration filter 13 and the limescale protection device 14 for flushing purposes, the flushed substances then reach the drain 17 via the drainage line 16. It is also possible As indicated by small arrows below the ultrafiltration module 13 or the limescale protection device 14, it is possible to backwash these two units, that is, to flow through them in the opposite direction to the Rinse out any suspended substances. The flushing line 20 is then to be routed differently accordingly.
  • FIG. 4 The illustrated embodiment differs from the embodiment of FIG Fig. 3 essentially in that a device TD, 15 for thermal disinfection is integrated in the limescale protection device 14, as will be done later on the basis of FIG Fig. 5 will be described in more detail.
  • An electronic control device (not shown in FIG.) Can control the multi-way valve 21 in such a way that essentially the entire flow of liquid is guided via the flushing line 20 when the thermal disinfection cycle is activated.
  • backwashing can also take place with line pressure from the cold water line 4 via 7 and 11 into the water treatment unit 9 or with heated water from 4 via 3, 5 and 7 into the water treatment unit 9.
  • the backwash water is conveyed into the drain 17 via 16.
  • Valves 12 shown, which lead to or from the water treatment device 9, are then preferably blocked during the disinfection cycle.
  • the disinfection cycle can be triggered by various circumstances or parameters, for example by measuring the pressure drop across the filter or the limescale protection device. Time control is also possible. It is also possible to measure flow rates and, depending on this, to disinfect the system. Rinsing or backwashing can also be associated with disinfection.
  • the heating device of the device for thermal disinfection can also be designed separately from the ultrafiltration filter and separately from the limescale protection device. When integrated in the limescale protection device (and / or in the filter), components can be saved and compact designs can be implemented.
  • FIG. 5 The illustrated embodiment shows an embodiment of a water treatment device according to the invention in greater detail.
  • Central components of the water treatment device 9 are again the ultrafiltration filter 13, the limescale protection device 14 with integrated thermal disinfection (heating device 15).
  • a microfilter 23 is provided which has a larger pore size than the ultrafiltration filter. For example, a pore size greater than 0.1 ⁇ m, particularly preferably between 5 ⁇ m and 500 ⁇ m.
  • the water treatment device 9 has an electronic control device 100 which, via sensors (not shown), can measure parameters such as pressures or temperatures in the water treatment device, among other things. Flow measurements in certain lines are also possible.
  • the electronic control device 100 can control the electromagnetic valves 22 as well as the in Fig. 1 control valves 12 shown.
  • a housing 30, indicated by dashed lines which can be designed like a cabinet and preferably has an openable door (not shown).
  • a partial flow of the drinking water is fed from the circulation line 7 via the inlet connection of the water treatment device 9 and returned from this via the outlet connection 11 of the circulation line 7.
  • the drinking water passes through the microfilter 23 to the ultrafiltration filter 13 and from there into the limescale protection device 14 and from there back to the drain connection 11.
  • Drinking water is thus pre-filtered in the microfilter 23 and ultra-fine-filtered in the ultrafiltration filter 13 and then treated in the limescale protection device 14.
  • the water then passes through the circulation line, which Circulating pump 8, the heat exchanger 3, the hot water flow 5 and the circulation line 7 as well as the inlet connection 10 back into the heat treatment device 9.
  • the water is therefore continuously circulated, it being sufficient if a partial flow is passed through the water treatment device 9.
  • biomass, other suspended matter and also germs are constantly removed from the drinking water and the drinking water is also constantly treated against lime deposits by the limescale protection device. This makes it possible to prevent the formation of germs and / or legionella bacteria even at low drinking water temperatures of below 60 ° C.
  • the water treatment device 9 can still be thermally disinfected.
  • the valves 22 are switched by the electronic control device such that hot water flows from the limescale protection device 14 via a pump 19 through the microfilter 23 and the ultrafiltration filter 13.
  • the water can be circulated.
  • FIG. 6 The illustrated embodiment shows in detail a limescale protection device 14 with a heating device 23 in the form of a sleeve.
  • the heating sleeve 23 allows the water inside the limescale protection device 14 to be increased to temperatures above 60 ° C, preferably above 75 ° C, especially when there is little flow or when the water is standing still, and thus not only to use this water to disinfect the limescale protection device itself , but also thermal disinfection of connected components, such as the in Fig. 5 Ultrafiltration filter 13 or the microfilter 23 to make.
  • the invention also relates not only to the entire device, as for example in Fig. 1 is shown, but also to a water treatment device for such a device as shown in Figures 2 to 5 is shown. These can be provided as stand-alone products for connection to existing circulation lines (retrofitting).
  • the method according to the invention is characterized in that, in order to reduce the biomass in the drinking water, at least a partial flow of the drinking water conveyed in the circulation line via a circulation pump is taken from the circulation line, cleaned using at least one filter, treated using at least one limescale protection device and then the circulation line is returned.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP20162107.5A 2019-03-12 2020-03-10 Dispositif et procédé de fourniture d'eau potable chaude Pending EP3712512A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50207/2019A AT522496A1 (de) 2019-03-12 2019-03-12 Einrichtung zur Bereitstellung von warmem Trinkwasser

Publications (1)

Publication Number Publication Date
EP3712512A1 true EP3712512A1 (fr) 2020-09-23

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EP20162107.5A Pending EP3712512A1 (fr) 2019-03-12 2020-03-10 Dispositif et procédé de fourniture d'eau potable chaude

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EP (1) EP3712512A1 (fr)
AT (1) AT522496A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021004705A1 (de) 2021-09-16 2023-03-16 Patrick Kürzl Ultrafiltration für Frischwasserstation zur Brauchwassererwärmung mit stetiger Integritätsüberwachung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002042220A1 (fr) * 2000-11-23 2002-05-30 Watercryst Chemiefreie Wasserbehandlung Gmbh Dispositif de traitement d'eau potable
EP0957066B1 (fr) 1998-03-24 2005-04-20 WATERCRYST chemiefreie Wasserbehandlung GmbH & Co. KG Procédé de précipitation et floculation de substances contenues dans des solutions
DE102004041987A1 (de) * 2004-08-29 2006-03-02 Stäcker, Hans-Peter Verfahren und Anordnung von Systembauteilen zum Abbau organischer Belastungen, insbesondere Legionellen in geschlossenen und offenen Wasserkreisläufen sowie Trinkwasserkreisläufen
DE202006011667U1 (de) * 2006-07-26 2006-11-23 Institut für Energetik und Umwelt gemeinnützige GmbH Vorrichtung zur Minimierung des notwendigen Filterdurchflusses in kreislaufgefilterten Warmwassersystemen
WO2008016934A2 (fr) * 2006-08-01 2008-02-07 Freije Treatment Systems, Inc. Système de traitement de fluide en boucle fermée
EP2883844A1 (fr) * 2013-12-12 2015-06-17 GTS Green Technology Solutions GmbH Système et procédé de préparation d'eau
DE102013114889A1 (de) * 2013-12-27 2015-07-02 Grünbeck Wasseraufbereitung GmbH Zirkulationseinrichtung für Trink- oder Betriebswasser und Verfahren zur Behandlung von Trink- oder Betriebswasser
DE102017101532A1 (de) 2017-01-26 2018-07-26 Solvis GmbH Warmwasserversorgungsanlage und Verfahren zum Betrieb dieser Warmwasserversorgungsanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3887504D1 (de) * 1987-10-23 1994-03-10 Vaillant Joh Gmbh & Co Einrichtung zur verhinderung des auftretens bzw. der fortpflanzung von kleinstlebewesen in brauchwasser.
DE102004045059B3 (de) * 2004-09-15 2006-03-02 Vertrieb und Großhandel von Heizungs-, Sanitär- und Elektroerzeugnissen Einrichtung und Verfahren zur Erwärmung und zur thermischen Behandlung von Trinkwasser in einer Wärmeversorgungsanlage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0957066B1 (fr) 1998-03-24 2005-04-20 WATERCRYST chemiefreie Wasserbehandlung GmbH & Co. KG Procédé de précipitation et floculation de substances contenues dans des solutions
WO2002042220A1 (fr) * 2000-11-23 2002-05-30 Watercryst Chemiefreie Wasserbehandlung Gmbh Dispositif de traitement d'eau potable
DE102004041987A1 (de) * 2004-08-29 2006-03-02 Stäcker, Hans-Peter Verfahren und Anordnung von Systembauteilen zum Abbau organischer Belastungen, insbesondere Legionellen in geschlossenen und offenen Wasserkreisläufen sowie Trinkwasserkreisläufen
DE202006011667U1 (de) * 2006-07-26 2006-11-23 Institut für Energetik und Umwelt gemeinnützige GmbH Vorrichtung zur Minimierung des notwendigen Filterdurchflusses in kreislaufgefilterten Warmwassersystemen
WO2008016934A2 (fr) * 2006-08-01 2008-02-07 Freije Treatment Systems, Inc. Système de traitement de fluide en boucle fermée
EP2883844A1 (fr) * 2013-12-12 2015-06-17 GTS Green Technology Solutions GmbH Système et procédé de préparation d'eau
DE102013114889A1 (de) * 2013-12-27 2015-07-02 Grünbeck Wasseraufbereitung GmbH Zirkulationseinrichtung für Trink- oder Betriebswasser und Verfahren zur Behandlung von Trink- oder Betriebswasser
DE102017101532A1 (de) 2017-01-26 2018-07-26 Solvis GmbH Warmwasserversorgungsanlage und Verfahren zum Betrieb dieser Warmwasserversorgungsanlage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021004705A1 (de) 2021-09-16 2023-03-16 Patrick Kürzl Ultrafiltration für Frischwasserstation zur Brauchwassererwärmung mit stetiger Integritätsüberwachung

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