EP1553353B1 - Bypass dans un conduit d'arrivée d'un réservoir de réaction - Google Patents

Bypass dans un conduit d'arrivée d'un réservoir de réaction Download PDF

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Publication number
EP1553353B1
EP1553353B1 EP05000089A EP05000089A EP1553353B1 EP 1553353 B1 EP1553353 B1 EP 1553353B1 EP 05000089 A EP05000089 A EP 05000089A EP 05000089 A EP05000089 A EP 05000089A EP 1553353 B1 EP1553353 B1 EP 1553353B1
Authority
EP
European Patent Office
Prior art keywords
line
water
charging circuit
heating system
water heating
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.)
Expired - Lifetime
Application number
EP05000089A
Other languages
German (de)
English (en)
Other versions
EP1553353A1 (fr
Inventor
Axel Laubach
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.)
Alfa Laval Corporate AB
Original Assignee
Alfa Laval Corporate AB
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Filing date
Publication date
Application filed by Alfa Laval Corporate AB filed Critical Alfa Laval Corporate AB
Publication of EP1553353A1 publication Critical patent/EP1553353A1/fr
Application granted granted Critical
Publication of EP1553353B1 publication Critical patent/EP1553353B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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 to a hot water preparation system with a charging circuit, wherein in the charging circuit in the conveying direction of a charging circuit pump, a pressure line, a first heat exchanger, a reaction vessel charging line, a reaction vessel and a connecting line to the intake to the said charging circuit are interconnected, wherein in the first heat exchanger with the input of the reaction vessel connecting the reaction vessel charging line, a branch is provided, with a opening into the intake of the charging circuit pump bypass line.
  • a water heater is off EP-A-0 122 475 known.
  • a water treatment plant of the type mentioned is for example in the Patent DE 42 35 038 described.
  • the water is fed via an access line from the charge pump into the charging circuit when cold water is fed into the system via the cold water line.
  • the delivered via the cold water line cold water mixed with the hot water in the charging circuit.
  • This hot water consists of about the circulation circuit and possibly with the appropriate valve position from the drinking water storage tank in the charging circuit recirculated proportions.
  • the mixed water has a mixing temperature that is below the temperature of the backfilled from said parts of the system parts.
  • This mixed water is then heated in a heat exchanger to disinfection temperature, conveyed into a reaction vessel and possibly promoted by this in a drinking water storage tank.
  • the present invention therefore has for its object to provide a water heating system with a charging circuit of the type described above, which achieves the heating of fed into the system cold water with minimal energy consumption and which effectively avoids the supply of water with critical for Legionellenwachstum temperature in the reaction vessel.
  • bypass-backflow preventer is arranged in the bypass line.
  • the bypass line is advantageously a faster heating of the water in the charging circuit achieved because the charging circuit is effectively reduced by bypassing the reaction memory and possibly connected in series drinking water storage tank.
  • the advantage is that in this way a smaller amount of water circulates through the heat exchanger faster than is the case when the reaction storage and the drinking water storage tank are included in the loading circuit.
  • bypass backflow preventer is advantageously prevented that water from the circulation circuit can be passed through a drinking water manifold or cold water through a cold water supply via the bypass line without passing through the heat exchanger in the reaction vessel, otherwise the introduction legionellen inconveniencen water into the reaction storage result could have.
  • a drinking water storage tank is provided in the charging circuit in series with the reaction vessel.
  • this drinking water storage tank it is possible to advantageously store disinfected, hot water in order to have sufficiently hot water at the tap points at short notice, at the tap rates which the Heat transfer capacity of the heat exchanger exceed, so that more hot water can be removed, as cold water is heated in the same time.
  • a circulation water circuit is provided, wherein in the circulation water circuit in the flow direction Zapfruhe a drinking water manifold, a drinking water outlet line, another heat exchanger, a drinking water distribution line and a circulation line to the circulation water Circuit are interconnected.
  • Zapfruhe a drinking water manifold, a drinking water outlet line, another heat exchanger, a drinking water distribution line and a circulation line to the circulation water Circuit are interconnected.
  • a development of the invention provides that the charging circuit pump, the reaction vessel and the drinking water storage tank are connected in both circuits and the cold water supply line opens into the suction line of the charging cycle pump.
  • the advantage of this arrangement is that the water flow from the circulation circuit opens in this way again in the charging current to be passed with advantage after heating to disinfection temperature in the reaction vessel.
  • two heat exchangers are provided in the charging circuit. This can advantageously be done in two stages heating, which can be designed to be particularly efficient. This is for example particularly advantageous if the second heat exchanger for cooling the hot water flow to the taps to temperatures below the disinfection temperature, which is undesirably hot in many cases. This results in an advantage so that a particularly energy-saving embodiment.
  • the branch to the bypass line is designed as a flow divider valve.
  • the reaction storage and the drinking water storage tank can be included in the charging circuit optionally or completely or partially bypassed.
  • the inflow to the reaction storage can be blocked by means of the partial flow valve when the water in the charging circuit has a temperature below the critical temperature for legionella growth.
  • the flow divider valve between a state in which the flow is completely passed from the outlet of the first heat exchanger to the reaction vessel, and a state in which the flow is completely directed to the suction line of the charge cycle pump, continuously is designed controllable.
  • a partial flow of the water in the charging circuit can advantageously be divided into a partial charging circuit, which comprises the reaction vessel and the drinking water storage tank, and a partial charging circuit, which bypasses these installation parts. This has the advantage that an adjustment of the quantity ratio of the sub-quantities conducted into the two partial-load circuits adapted to the respective operating state is possible.
  • the flow control valve is formed by a preferably arranged in the reaction vessel charging line charging circuit temperature sensor in conjunction with a controller regulated.
  • This arrangement has the advantage that at a measured by the charging circuit temperature sensor predetermined temperature at which the risk of Increased legionella growth, by means of the regulator automatically via the flow control valve, the amount of water in the charging circuit can be performed via the bypass line. It can therefore be advantageously ensured that only water is conveyed with sufficiently high temperature in the reaction storage. As soon as the temperature in the charging circuit has reached the disinfection temperature, a partial amount with disinfection temperature which corresponds to the capacity of the heat exchanger is always transferred into the reaction vessel.
  • the circulation line is arranged in the bypass line downstream of the bypass backflow preventer.
  • the advantage of this arrangement is that via the bypass line water from the circulation circuit in the reduced charging circuit, which does not contain the reaction vessel, can be introduced. In this way, for example, in the case that the reaction vessel is completely disconnected from the charging circuit via a divisional valve, water from the circulation circuit can be kept in circulation.
  • the fact that the orifice is located downstream of the bypass backflow preventer has the advantage that water from the circulation loop can not enter the reaction tank directly without passing through the heat exchanger in this way.
  • shut-off valves which are preferably designed to be actuatable by a motor control, are provided in the cold water line and / or the connecting line.
  • the tapping quantity can be limited to a safe level.
  • the bleed amount is limited to zero, namely, when the cold water supply is disabled.
  • the reaction vessel is designed as a pipe spiral. Mixing effects in the reaction vessel can be advantageously avoided in this way.
  • the reaction vessel from the charging circuit by a switchable bypass line can be decoupled until the temperature in the charging circuit exceeds a disinfection temperature and only then the reaction vessel are integrated into the charging circuit.
  • FIG. 1 shows a schematic representation of the preferred embodiment of the invention.
  • a connecting line 11a water from the drinking water reservoir 10 via a shut-off valve 22 and the connecting line 11 and a portion of the cold water flow from the cold water supply line 3 through a check valve 22 via a suction line 6 to a charging circuit pump 5, in a charging circuit 1 is located, headed.
  • the water is first heated to preheat by the further heat exchanger 14 and then by the heat exchanger 8 to sufficiently high temperatures and thereby disinfected.
  • the further heat exchanger 14 is integrated with its hot water side in the drinking water outlet pipe 13, in which heated to disinfection temperature heated water from the drinking water storage tank 10 via the drinking water distribution line 15 to the taps 4.
  • This water in the drinking water outlet pipe 13 is cooled down by the heat exchanger 14 to a safe temperature and can be removed via the drinking water distribution line 15 the taps 4 without the risk of scalding.
  • the disinfected as described above water in the charging circuit 1 is heated by the heat exchanger 8 to disinfection temperature and passed through a reaction vessel charging line to a flow divider valve 19.
  • the drinking water storage tank 10 When Zapfruhe the drinking water storage tank 10 is included in the circulation water circuit 2, wherein the water circulates in the circulation water circuit 2 in the conveying direction of the circulation pump 31.
  • the conveying direction is indicated in the lines by arrows.
  • the other partial water amount is returned through a bypass line 18 and a bypass backflow preventer 21 to the suction line 6 of the charge cycle pump 5 through the flow divider valve 19. This amount of water is then passed there first for preheating by the heat exchanger 14 and then through the heat exchanger 8 for heating.
  • the temperature of the drinking water in the drinking water distribution line 15 is lowered.
  • the temperature of the circulation water is measured by a arranged in the drinking water distribution pipe 15 drinking water temperature sensor 25 which is connected to a drinking water mixing valve 26 this regulating. If the temperature measured at the drinking water temperature sensor 25 is too low, then the drinking water mixing valve 26 opens a bypass line 27 and closes the line via the heat exchanger 14, whereby unwanted cooling is avoided. On the other hand, if the temperature measured on the drinking water temperature sensor 25 is too high, then the drinking water mixing valve 26 shuts off the bypass line 27 and opens the line via the heat exchanger 14 until the desired low temperature is reached.
  • Water fed into the hot water preparation system via the cold water supply line 3 can circulate in the shortened charge cycle and pass through the heat exchangers 8 and 14 until the desired temperature is reached in the shortest possible time.
  • the temperature range in which Legionella multiply, is traversed in no time.
  • the path to the reaction vessel 9 is released at the charging circuit temperature sensor 20 with the aid of the regulator 23, and water heated to the disinfection temperature is conveyed into the reaction vessel.
  • the flow divider valve 19 is again set in a state in which the volume flow is conducted completely from the outlet of the heat exchanger 8 to the reaction vessel 9. In this way, the reaction storage and the drinking water storage are again involved in the charging circuit and there is no water passed through the bypass line.
  • FIG. 2 a hot water preparation system of the type mentioned is shown, in which the reaction vessel 9 is divided into a reaction vessel section 9a and a drinking water storage tank section 9b.
  • a bypass line 27 opening into a flow mixing valve 28 is arranged branching off, so that the water pumped by the charge cycle pump depending on the state of the flow Mixing valve 28 via the heat exchanger 14 or is not conductive.
  • the flow mixing valve 28 is controlled by the drinking water temperature sensor 25 for controlling the temperature of the introduced into the drinking water storage tank 10 water. To reduce this temperature, the bypass line 27 is shut off, so that the pumped water is passed through the heat exchanger 14. In this way, a preheating in the energy saving is Charging circuit 1 reached.
  • a tube spiral 29 is arranged downstream of the flow divider valve 19, which fulfills the function of the reaction vessel 9.
  • the water from the charging circuit for a sufficient to kill the Legionella residence time is kept before entering the drinking water storage tank 10, without it can lead to mixing effects.
  • the volume circulated in the charging circuit 1 is advantageously lower than when a reaction container 9 is used, which saves energy and reduces the preheating time.

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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)
  • Devices For Dispensing Beverages (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Furan Compounds (AREA)

Claims (13)

  1. Installation de production d'eau chaude avec un circuit de chargement (1), lequel circuit de chargement (1) comprend, installés dans le sens de débit d'une pompe de circuit de chargement (5), une conduite de refoulement (7), un premier échangeur de chaleur (8), une conduite de chargement de réservoir de réaction (17), un réservoir de réaction (9) et une conduite de liaison (11) vers une conduite d'admission (6) dans ledit circuit de chargement (1), une dérivation (30) avec une conduite de bypass (18) débouchant dans la conduite d'admission (6) de la pompe de circuit de chargement (5) étant prévue dans la conduite de chargement du réservoir de réaction (17) reliant le premier échangeur de chaleur (8) à l'entrée du réservoir de réaction (9), caractérisée en ce qu'un système empêchant le retour dans le bypass (21) est disposé dans la conduite de bypass (18).
  2. Installation de production d'eau chaude selon la revendication 1, caractérisée en ce qu'un réservoir de stockage d'eau potable (10) en série avec le réservoir de réaction (9) est prévu dans le circuit de chargement (1).
  3. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce qu'il est prévu un circuit d'eau de circulation (2), ledit circuit d'eau de circulation (2) comprenant, installés dans le sens d'écoulement en l'absence de soutirage, un collecteur d'eau potable (12), une conduite d'évacuation d'eau potable (13), un autre échangeur de chaleur (14), une conduite de distribution d'eau potable (15) et une conduite de circulation (16) vers le circuit d'eau de circulation (2).
  4. Installation de production d'eau chaude selon la revendication 3, caractérisée en ce qu'une conduite de contournement (27) débouchant dans une vanne mélangeuse de canalisation montante (28) disposée en aval de l'autre échangeur de chaleur (14) est disposée en dérivation dans la conduite de refoulement (7) de la pompe de circuit de chargement (5).
  5. Installation de production d'eau chaude selon la revendication 4, caractérisée en ce qu'une sonde de température (25) servant à réguler la vanne mélangeuse de canalisation montante (28) est disposée dans le circuit d'eau de circulation.
  6. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce que la pompe de circuit de chargement (5), le réservoir de réaction (9) et le réservoir de stockage d'eau potable (10) sont installés dans les deux circuits et en ce que la conduite d'eau froide (3) débouche dans la conduite d'admission (6) de la pompe de circuit de chargement (5).
  7. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce que deux échangeurs de chaleur (8, 14) sont prévus dans le circuit de chargement (1).
  8. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce que la dérivation (30) est réalisée sous la forme d'une vanne diviseuse de débit (19).
  9. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce que la vanne diviseuse de débit (19) est réalisée de manière à pouvoir être commutée en continu entre un état dans lequel le débit volumique est amené en totalité de la sortie du premier échangeur de chaleur (8) au réservoir de réaction (9) et un état dans lequel le débit volumique est amené en totalité à la conduite d'admission (6) de la pompe de circuit de chargement (5).
  10. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce que la vanne diviseuse de débit (19) est formée avec régulation par une sonde de température de circuit de chargement (20), de préférence disposée dans la conduite de chargement du réservoir de réaction (17), associée à un régulateur (23).
  11. Installation de production d'eau chaude selon l'une ou plusieurs des revendications précédentes, caractérisée en ce que la conduite de circulation (16) est disposée de façon à déboucher dans la conduite de bypass (18), de préférence en aval du système empêchant le retour dans le bypass (21).
  12. Installation de production d'eau chaude selon l'une ou plusieurs des revendications précédentes, caractérisée en ce que des robinets d'arrêt (22), de préférence réalisés pour permettre une commande motorisée au moyen d'une commande (23), sont prévus dans la conduite d'eau froide (3) et/ou dans la conduite de liaison (11).
  13. Installation de production d'eau chaude selon l'une des revendications précédentes, caractérisée en ce que le réservoir de réaction (9) est réalisé sous la forme d'un serpentin (29).
EP05000089A 2004-01-07 2005-01-05 Bypass dans un conduit d'arrivée d'un réservoir de réaction Expired - Lifetime EP1553353B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004001170A DE102004001170A1 (de) 2004-01-07 2004-01-07 Bypaß im Reaktionsspeichervorlauf
DE102004001170 2004-01-07

Publications (2)

Publication Number Publication Date
EP1553353A1 EP1553353A1 (fr) 2005-07-13
EP1553353B1 true EP1553353B1 (fr) 2011-03-02

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EP05000089A Expired - Lifetime EP1553353B1 (fr) 2004-01-07 2005-01-05 Bypass dans un conduit d'arrivée d'un réservoir de réaction

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EP (1) EP1553353B1 (fr)
AT (1) ATE500473T1 (fr)
DE (2) DE102004001170A1 (fr)
ES (1) ES2362754T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH721565A1 (de) * 2024-02-06 2025-08-15 Hans Robert Goessi Einrichtung zur Aufbereitung, Speicherung und Verteilung einer Warmwassermenge

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
DE102013213017A1 (de) * 2013-07-03 2015-01-08 Bruno Schramm Verfahren und eine Einrichtung zur Erwärmung und thermischen Behandlung von Trinkwasser
EP3529537B1 (fr) * 2016-10-19 2022-03-16 LegioGuard Pty Ltd Améliorations dans des systèmes de distribution d'eau chaude, tempérée et froide
WO2023159632A1 (fr) * 2022-02-28 2023-08-31 佛山市顺德区美的饮水机制造有限公司 Ensemble d'alimentation en eau et dispositif d'alimentation en eau
CN114601336B (zh) * 2022-02-28 2023-04-25 佛山市顺德区美的饮水机制造有限公司 饮水设备
CN114601333B (zh) * 2022-02-28 2023-04-25 佛山市顺德区美的饮水机制造有限公司 饮水设备
WO2023159623A1 (fr) * 2022-02-28 2023-08-31 佛山市顺德区美的饮水机制造有限公司 Dispositif de distribution d'eau
DE202022102207U1 (de) * 2022-04-25 2022-05-04 Gebr. Kemper Gmbh + Co. Kg Warmwasserversorgungssystem mit Wärmerückgewinnung

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DE3309741A1 (de) * 1983-03-18 1984-09-20 Forschungsgesellschaft Heizung-Lüftung-Klimatechnik Stuttgart mbH, 7000 Stuttgart Heizanlage sowie verfahren zu deren betrieb
DE4235038C5 (de) * 1992-10-17 2011-06-16 Dünnleder, Werner, Dipl.-Ing. Anlage zum Erwärmen von Brauchwasser und zum Abtöten von Legionellen in diesem Brauchwasser
DE4300292C2 (de) * 1993-01-08 1995-11-16 C T C Waermetauscher Gmbh Anlage zur Warmwasserversorgung
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AT409659B (de) * 1999-09-24 2002-10-25 Vaillant Gmbh Schichtenspeicher-anlage
DE20300715U1 (de) * 2003-01-17 2003-05-08 Cetetherm Wärmetauschersysteme GmbH, 22113 Hamburg Warmwasserbereitungsanlage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH721565A1 (de) * 2024-02-06 2025-08-15 Hans Robert Goessi Einrichtung zur Aufbereitung, Speicherung und Verteilung einer Warmwassermenge

Also Published As

Publication number Publication date
DE102004001170A1 (de) 2005-08-04
DE502005011019D1 (de) 2011-04-14
ATE500473T1 (de) 2011-03-15
EP1553353A1 (fr) 2005-07-13
ES2362754T3 (es) 2011-07-12

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