EP2679919A2 - Procédé de préparation d'eau froide et chaude dans un système d'approvisionnement en eau et dispositif d'eau sanitaire - Google Patents

Procédé de préparation d'eau froide et chaude dans un système d'approvisionnement en eau et dispositif d'eau sanitaire Download PDF

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Publication number
EP2679919A2
EP2679919A2 EP13172052.6A EP13172052A EP2679919A2 EP 2679919 A2 EP2679919 A2 EP 2679919A2 EP 13172052 A EP13172052 A EP 13172052A EP 2679919 A2 EP2679919 A2 EP 2679919A2
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EP
European Patent Office
Prior art keywords
cold water
water
circulation
cold
fresh
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.)
Withdrawn
Application number
EP13172052.6A
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German (de)
English (en)
Other versions
EP2679919A3 (fr
Inventor
Bruno Schramm
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP2679919A2 publication Critical patent/EP2679919A2/fr
Publication of EP2679919A3 publication Critical patent/EP2679919A3/fr
Withdrawn legal-status Critical Current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
    • F24D17/0078—Recirculation 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
    • E03B7/04—Domestic or like local pipe systems
    • E03B7/045—Domestic or like local pipe systems diverting initially cold water in warm water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water

Definitions

  • the present invention relates in particular to a method for providing cold and hot water in a water supply system according to the preamble of claim 1.
  • the present invention has the object, a particular for cold water provision in a water supply system provided method such that the mentioned disadvantages overcome or at least mitigated, without having to do without an effective Legionellenvermeidung in a cold water distribution.
  • the cold water circulation is connected to the hot water circulation, that is fed with a removal of hot water at the at least one tap cold water from the cold water circulation in the warm water circulation and at the same time fresh cold water is fed into the cold water circulation from the fresh water connection.
  • the temperature of the cold water in the cold water circulation is lowered, even with an exclusive removal of hot water through the hot water circulation.
  • the cold water is circulated both at a withdrawal of cold water at the at least one tapping point as well as the removal of hot water and for this also fresh cold water in the cold water circulation tracked.
  • the temperature of the in the Cold water circulation kept cold water in a simple manner below a critical temperature, in which the risk of Legionella propagation in the cold water lines is reduced.
  • the hot water from a warm water return of the hot water circulation of a heating device such as a (plate) heat exchanger, supplied, which heats the hot water to promote it to the at least one tap.
  • a heating device such as a (plate) heat exchanger
  • the hot water from the cold water circulation is fed into this hot water return.
  • the cold water from the cold water circulation is thus supplied to the hot water return at a point downstream of the heating device. Accordingly, the fed from the cold water circulation cold water and the hot water from the hot water return are mixed and heated by the heater to a predetermined temperature and then supplied to a hot water supply, which supplies the at least one tap with hot water.
  • the hot water circulation comprises at least one hot water supply line, via which hot water is led to the at least one tap, and at least one connected to the hot water supply line hot water return line through the hot water away from the at least one tap and the hot water return is supplied.
  • the coupled via the heater with the hot water return hot water supply in turn supplies the hot water supply lines.
  • the cold water circulation has a cold water supply line, via which cold water is led to the at least one tapping point, and a cold water return line connected to the cold water supply line, via which cold water is led away from the at least one tapping point.
  • the cold water supply line (s) branches (branches off) from a cold water supply, while the cold water return lines (s) in a cold water return flows (open).
  • the cold water supply and the cold water return are connected with each other, so that cold water coming from the cold water return can be fed into the cold water supply together with fresh cold water from the fresh water connection (a cold water supply).
  • a discharge device in a cold water supply in the cold water return of a cold water circulation, is provided, is discharged via the cold water from the cold water circulation when a measured temperature for cold water return located in the cold water has exceeded a predetermined temperature threshold.
  • the discharge of cold water is triggered when the measured temperature has exceeded 25 ° C.
  • the discharge device then preferably leaves cold water from the cold water return until the temperature measured herein has fallen below 25 ° C or 20 ° C.
  • a drinking water device for providing cold water in a drinking water supply system according to claim 9 is proposed.
  • a pump is preferably provided in the cold water return.
  • An additional non-return valve such as a non-return valve or check valve, prevents cold water from returning from the cold water supply, so that after draining warmed cold water from the cold water return (as "too warm"), cold water from the cold water return line (off the cold water return lines) is nachgegont in the cold water return.
  • cold water flows from the cold water supply line (from the cold water supply lines) into the respective cold water return line and from the cold water feed line into the cold water supply line.
  • the cold water supply is fed with fresh cold water for this purpose, the total temperature of the cold water is reduced in the cold water circulation.
  • the cold water supply line (s) which are laid, for example, within a building to the vicinity of the respective tapping point (s).
  • the temperature of the cold water in the cold water circulation (in addition) can be lowered in a simple and effective manner via the tracking of fresh cold water even with an exclusive hot water tap.
  • FIG. 1 a drinking water device for cold water and hot water provision is shown in a drinking water supply system.
  • the illustrated drinking water device is to be provided at several taps Z1, Z2, Z3, for example showers or faucets, both cold water KW and hot water WW available.
  • the drinking water device shown here comprises several line systems A, B, which are, for example, for the lines of a building or a floor.
  • a heat exchanger PWÜ as a heating device, for example in the form of a Platten Vietnamese cuisineschreibers provided, which couples a hot water circulation WWZ with a heating circuit, of which here a heating flow 1a and a heating return 1b are shown.
  • a flow of heating medium flows to the heat exchanger PWÜ (the heating device) via a control valve V 1a in order to transfer at least part of the energy contained in the heating medium to the hot water WW guided in the hot water circulation WWZ.
  • the less energy-rich heating medium is then guided away from the heat exchanger PWÜ via the heating return 1 b in the direction of another terminal 1 B.
  • the hot water to be heated WW which here has a temperature of about 30 ° C to 55 ° C, is introduced via a hot water return 2b to the heat exchanger PWÜ.
  • a pump P 2b and a non-return valve R 2b are provided in the hot water return 2b .
  • the heated via the heat exchanger PWÜ to a temperature of about 60 ° C, higher-energy hot water WW is performed in a hot water supply 2a.
  • a plurality of hot water supply lines 5a, 7a are connected to branches 25a and 27a of this hot water supply 2a.
  • the hot water WW to be supplied to the taps Z1, Z2, Z3 is introduced.
  • Each hot water tap line 51a, 52a, 53a is connected to a mixing valve M1, M2, M3, via which the hot water WW are mixed depending on requested at the tapping point Z1, Z2, Z3 water temperature and quantity of cold water KW from a cold water circulation KWZ can. Furthermore, in the FIG. 1 nor a connecting piece 2A shown on the hot water 2 a, where the hot water circulation can be connected to other line systems not shown here.
  • the hot water branch 50, 70 is advantageously located as close as constructive in the respective line system A, B possible in the last downstream Zapfstelle Z1 (in the case of the conduit system A), to avoid that in a relatively long piece of pipe permanently heated water stands if no hot water DH is requested at one of the taps Z1, Z2, Z3.
  • temperature-controlled control valves V 5b , V 7b are provided so that a stream of recirculated hot water WW in the hot water return 2b can be temperature-dependent controlled.
  • a hot water return line 5b, 7b initiates in each case at an associated point of introduction 52b, 72b recycled hot water WW in the hot water return 2b.
  • a cold water circulation KWZ is provided in this case, via which the cold water KW required at the taps Z1, Z2, Z3 is maintained.
  • the cold water circulation KWZ has a cold water supply 3a, which via a fresh water connection 3A of a cold water supply with fresh Cold water is supplied.
  • the temperature of the cold water KW stored in the cold water supply 3a is preferably approximately 10 to 12 ° C.
  • Cold water supply lines 4a, 6a are discharged from the cold water supply 3a at branches 34a, 36a, via which cold water KW within the individual line systems A, B is led to the taps Z1, Z2, Z3.
  • Analogous to the hot water supply line 5a, 7a branches from a cold water supply line 4a, 6a cold water tap lines 41 a, 42a, 43a to the individual mixing valves M1, M2, M3.
  • a cold water return line 4b, 6b connected to the respective cold water supply line 4a, 6a.
  • a cold water return line 4b, 6b is connected to the respective cold water supply line 4a, 6a.
  • V 4b , V 6b adjustable return of a cold water flow to the cold water supply 3a.
  • the individual cold water return lines 4b, 6b are connected at introduction points 43b, 63b to a cold water return 3b. This cold water return 3b is in turn connected to the cold water supply 3a to close the cold water cycle of the cold water circulation KWZ.
  • the temperature of the cold water KW in a circulating cold water system can thereby increase, for example, by adjacent lines of the circulating hot water system or heating lines or by a correspondingly increased outside temperature, for example in the summer.
  • the cold water supply 3a downstream of the branches 34a, 36a to the cold water supply lines 4a, 6a is directly connected to the hot water circulation WWZ.
  • the cold water supply 3a is connected to the hot water return 2b, so that cold water KW from the cold water supply automatically hot water WW from the Hot water return 2b is mixed when hot water WW is requested at one of the taps Z1, Z2, Z3.
  • a non-return valve R 3a Via a non-return valve R 3a , a backflow of circulation cold water KW into the cold water supply 3a is prevented.
  • the cold water KW circulates in the cold water circulation KWZ always mandatory if (only) hot water WW at the taps Z1, Z2, Z3 is requested. Since cold water KW is taken from the cold water circulation KWZ, fresh cold water from the fresh water connection 3A is simultaneously fed into the cold water supply 3a. Thus, in addition to the circulation of the cold water KW in the cold water circulation KWZ achieved that the temperature of the held in the cold water circulation KWZ cold water KW is reduced by the fresh, colder cold water.
  • a discharge direction 8 and a temperature sensor TS is provided in the cold water return 3b.
  • a temperature of the cold water KW located in the cold water return 3b is measured continuously or discretely at predetermined time intervals via the temperature sensor TS. If the temperature sensor TS determines that a predetermined temperature threshold - here of 20 ° C - has been exceeded, a drain valve V 3b of the discharge device 8 is opened in order to release cold water KW from the cold water return 3b until the measured temperature has fallen below the temperature threshold again ,
  • the temperature threshold value to be predetermined for this purpose at the temperature sensor TS, from which the cold water KW is discharged via the discharge device 8, can of course be adjustable.
  • the cold water KW is conveyed from the cold water return 3b to the cold water supply 3a and the hot water return 2b.
  • the temperature-controlled discharge of cold water KW from the cold water circulation KWZ Consequently, not only is a circulation of the cold water KW in the cold water circulation KWZ generated regardless of whether at the taps Z1, Z2, Z3 cold water KW is taken, but it is also directly regulated that the cold water KW in the cold water circulation KWZ below a certain temperature , here for example about 20 ° C, which is detrimental to the Legionellen Struktur.
  • the provided in the cold water return 3b pump P 3b which is located downstream of the introduction points 43b, 63b for the cold water return lines 4b, 6b in the cold water return 3b also promotes cold water KW from the cold water return 3b in the direction of the cold water supply 3a and in the direction of Point at which fresh cold water from the fresh water connection 3A is fed into the hot water return 2b when hot water is drawn and thus cold water KW from the cold water supply 3a is supplied to the hot water return 2b of the hot water circulation WWZ.
  • a check valve R 3b in the cold water return 3b downstream of the pump P 3b prevents cold water KW from entering the cold water return 3b from the cold water supply 3a and the fresh water connection 3A.
  • the introduction of the cold water KW from the cold water return 3b in the fed via the fresh water connection 3A cold water supply 3a takes place here downstream of the branches 34a, 36a for the cold water supply lines 4a, 6a.
  • the pump P 3b coupled to the temperature sensor TS can also be provided upstream (a branch to) of the discharge device 8 and downstream of the introduction points 43b, 63b from the cold water return lines 4b, 6b, to cold water KW, which by means of the temperature sensor TS is classified as "too warm” to pump to the discharge device 8.
  • a hot water circulation WWZ and a cold water circulation KWZ are connected to each other, that even with an exclusive tap or removal of hot water WW at a tap Z1, Z2, Z3 the cold water KW is circulated in the cold water circulation KWZ and new, fresh Cold water from the Fresh water connection 3A is tracked.
  • a further possibility is also provided via a discharge device 8 and a temperature sensor TS coupled thereto, independently of a tap at the taps Z1, Z2, Z3, to circulate the cold water KW in the cold water circulation KWZ and, in particular, under a temperature regarded as critical for the formation of Legionella to keep.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Devices For Dispensing Beverages (AREA)
EP13172052.6A 2012-06-29 2013-06-14 Procédé de préparation d'eau froide et chaude dans un système d'approvisionnement en eau et dispositif d'eau sanitaire Withdrawn EP2679919A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012211373A DE102012211373B3 (de) 2012-06-29 2012-06-29 Verfahren zur Bereitstellung von Kalt- und Warmwasser in einem Wasserversorgungssystem und Trinkwassereinrichtung

Publications (2)

Publication Number Publication Date
EP2679919A2 true EP2679919A2 (fr) 2014-01-01
EP2679919A3 EP2679919A3 (fr) 2016-11-30

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EP13172052.6A Withdrawn EP2679919A3 (fr) 2012-06-29 2013-06-14 Procédé de préparation d'eau froide et chaude dans un système d'approvisionnement en eau et dispositif d'eau sanitaire

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EP (1) EP2679919A3 (fr)
DE (1) DE102012211373B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670765A1 (fr) * 2018-12-19 2020-06-24 Georg Fischer JRG AG Alimentation de chauffe-eau
CN114575412A (zh) * 2022-03-16 2022-06-03 中国水利水电科学研究院 一种基于城市供水的社会水循环通路描述方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800007154A1 (it) * 2018-07-13 2020-01-13 Impianto idraulico sanitario per l'erogazione immediata di acqua calda di consumo senza spreco di una goccia di acqua fredda

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033307A1 (de) * 2003-09-05 2005-03-31 Bernhard Miller Verfahren zum Betrieb einer zentralen Warmwasserversorgungsanlage in Gebäuden
DE202004008947U1 (de) * 2004-06-04 2004-11-11 Schöberl, Meinolf, Dr.-Ing. Vorrichtung zur Entkeimung von Wasser in einem Wasserleitungssystem
DE102004039232A1 (de) * 2004-08-12 2006-02-23 Thomas Bauer Verfahren und System zur Behandlung von Wasser
NL1037550C2 (nl) * 2009-12-11 2011-06-15 Renerus Maria Hemme Inrichting voor het leveren van tapwater en werkwijze voor het bestrijden van ziektekiemen in zo een inrichting.

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670765A1 (fr) * 2018-12-19 2020-06-24 Georg Fischer JRG AG Alimentation de chauffe-eau
CN114575412A (zh) * 2022-03-16 2022-06-03 中国水利水电科学研究院 一种基于城市供水的社会水循环通路描述方法

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Publication number Publication date
DE102012211373B3 (de) 2013-11-07
EP2679919A3 (fr) 2016-11-30

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