EP3690151A1 - Système d'eau potable et d'eau sanitaire et son procédé de rinçage - Google Patents

Système d'eau potable et d'eau sanitaire et son procédé de rinçage Download PDF

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Publication number
EP3690151A1
EP3690151A1 EP20153854.3A EP20153854A EP3690151A1 EP 3690151 A1 EP3690151 A1 EP 3690151A1 EP 20153854 A EP20153854 A EP 20153854A EP 3690151 A1 EP3690151 A1 EP 3690151A1
Authority
EP
European Patent Office
Prior art keywords
drinking
water system
temperature sensor
control unit
flushing
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.)
Granted
Application number
EP20153854.3A
Other languages
German (de)
English (en)
Other versions
EP3690151B1 (fr
Inventor
Thomas Spöler
Manuel Schuppert
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
Original Assignee
Gebr Kemper GmbH and Co KG
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Gebr Kemper GmbH and Co KG filed Critical Gebr Kemper GmbH and Co KG
Publication of EP3690151A1 publication Critical patent/EP3690151A1/fr
Application granted granted Critical
Publication of EP3690151B1 publication Critical patent/EP3690151B1/fr
Active legal-status Critical Current
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
    • 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
    • E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves

Definitions

  • the present invention relates to a drinking and process water system with the preamble features of claim 1. Such a drinking and process water system is based on the applicant DE 20 2008 002 822 U1 known. The present invention further relates to a method for flushing such a system.
  • the previously known drinking and process water system has a connection to the public water supply network in the basement of a building. Via this connection, several supply lines for the supply of various water consumers within the building are fed with fresh water. If there is no water withdrawal by a consumer, stale water in the supply lines can be drained into a sewer line via a flushing valve.
  • the flushing valve is provided at one end of the supply line or supply lines and is connected in terms of control to a central control unit. In particular, the position of the flush valve can be checked by means of a motor cable. This is usually connected indirectly via a decentralized control unit or directly to the central control unit.
  • the central control unit usually coordinates all flushing processes in a building and evaluates the temperature signals described below.
  • a wired connection of sensors and valves for monitoring and regulating the drinking water system can also be done via distributed controls in the building. These decentralized controls can in turn be an integral part of an overall unit, which can also contain sensors and valves. Automated flushing processes can be programmed using a time module integrated in the central control unit. In addition, a water temperature measured via a temperature sensor can be transmitted to the central control unit. Depending on the measured temperature, the period of the flushing cycles can be adjusted so that, for example, in summer, when the pipes and the water in them warm up more quickly, they are flushed at shorter intervals than in winter.
  • a flushing device which has a temperature sensor for recording the temporal temperature profile of the water temperature contained in a drinking water pipe. If this temperature sensor records a constant temperature curve over a predetermined period of time, a flushing process is triggered by opening a flushing valve. If the temperature sensor does not record a constant temperature curve over a predetermined period of time, a flushing process is omitted by keeping the flushing valve closed.
  • a drinking water pipe remains unused for a longer period of time, the temperature of the water in it will adjust to the ambient temperature. A thermal equilibrium is established between the environment and the drinking water pipe. If the ambient temperature is in the room temperature range, the formation of germs such as Legionella is favored. Flushing the drinking water pipe is then necessary with a view to drinking water hygiene.
  • the present invention provides a drinking and process water system with the features of claim 1.
  • This drinking and process water system has a connection to the public water supply network, via which at least the supply line leading to at least one consumer is fed with fresh water.
  • the flushing valve for draining water from the drinking and industrial water system is arranged downstream of the consumer in the direction of flow and is connected in terms of control to a control unit which comprises a flushing module which flushes the control unit at certain times and / or at certain time intervals and / or depending on measured Temperatures.
  • the control unit controls a drive which, for. B. a valve body of the flush valve relative to a valve seat of the flush valve via an axially movable or a rotatably mounted actuator.
  • a rinse can then be programmed into the control unit at predetermined times and / or at predetermined time intervals (for example every eight hours) and / or as a function of measured temperatures. Such preprogramming is usually referred to as a wash schedule.
  • the drinking and industrial water system has a first temperature sensor upstream of the consumer in the direction of flow. This measures the water temperature in the supply line.
  • a second temperature sensor is arranged between the consumer and the flush valve.
  • the control unit is set up to decide, based on a temperature difference between a measured value of the first temperature sensor and a measured value of the second temperature sensor, whether a rinsing process specified according to the rinsing schedule is carried out, omitted or postponed.
  • the time intervals between two rinsing processes are selected so that the water in the pipes does not develop into a critical temperature range in which bacterial formation is favored, even if a consumer does not tap.
  • the time intervals are usually fixed.
  • a temperature-controlled flush can be programmed into the flushing schedule in addition or as an alternative to the purely time-controlled flushing.
  • the control unit initiates a flushing process, ie opens the flushing valve and then closes it again when sufficient stagnant water has been drained from the system and replaced with fresh cold water.
  • Rinsing means an exchange of water in the pipe.
  • the present invention provides a solution to this problem.
  • the temperature in the supply line usually drops because cold water flows in via the connection to the public water supply network. This causes a temperature difference between the measured values of the first and the second temperature sensor. This is because the second temperature sensor is arranged downstream of the consumer in the flow direction, preferably assigned to the flushing valve and / or arranged directly in front of the flushing valve. While the temperature in the area of the first temperature sensor is essentially instantaneously reduced by the direct exchange of water in the line by cold water, in the area of the second temperature sensor there is temperature compensation with the cold water which has flowed in and remains in the line after the tapping process has ended , only gradually through heat transfer (convection).
  • the area of the second temperature sensor is usually not directly flowed through by the incoming cold water. In this respect, the processes in these two areas take place on different time scales, which means that a temperature difference between the measured values of the first and the measured values of the second temperature sensor can be determined during a tapping process.
  • the first and second temperature sensors usually measure continuously and are connected to the control unit in terms of data.
  • a temperature difference between the measured values of the first temperature sensor and the measured values of the second temperature sensor is usually determined in the control unit at defined time intervals, usually at most one minute.
  • the control unit contains a logic unit which determines a temperature difference by calculating the difference between the measured value of the first and the measured value of the second temperature sensor, the difference being logged or stored, if necessary. The calculation of the difference can preferably be carried out continuously.
  • the control unit can draw conclusions about the usage behavior of the consumers. These conclusions flow into the decision of the control unit as to whether a flushing process should be carried out, omitted or postponed.
  • the invention brings about a use-oriented change in the flushing schedule.
  • the drinking and Process water system less susceptible to external influences. This is because these affect both temperature sensors equally, so that their effects have no influence on the difference between the measured value of the first temperature sensor and the measured value of the second temperature sensor.
  • the present invention thus allows hygienically safe operation of a drinking and process water system. For example, if a significant tap takes place directly before a rinsing process specified in the rinsing schedule, i.e. a larger amount of water is removed from the system by a consumer, the specified rinsing process can be dispensed with or postponed. Because the consumption-related exchange of water during a significant dispensing process ensures that sufficient fresh water flows into the system so that the subsequent rinsing process can be dispensed with in order to comply with the hygienic requirements.
  • the planned rinsing process and all subsequent rinsing processes can only be postponed for a certain time.
  • the period between the individual subsequent rinsing processes is usually not changed.
  • a connection to the public water supply network within the meaning of the present invention is in particular a region of a drinking and process water system of a building that communicates directly with the domestic water meter, but does not yet have a branch that leads to one or more supply lines.
  • the water drained through the flush valve is usually drained off via a sewage pipe connected to a sewage outlet.
  • Waste water discharge in the sense of the present invention is to be understood as the pipeline area of a drinking and industrial water system of a building which transfers the waste water to the public waste water network.
  • the connection to the public water supply network and the waste water outlet are usually located directly next to each other and at basement level.
  • the supply line or the supply lines generally have a nominal diameter of DN 20 or larger.
  • control unit is set up in such a way that the difference between the measured value of the first temperature sensor and the measured value of the second temperature sensor is formed at predetermined time intervals and is stored in the control unit for a defined minimum period.
  • the predetermined time intervals between two difference values are generally the same.
  • the time interval between two difference values is preferably at most one minute.
  • the specified minimum duration is preferably 24 hours.
  • control unit is set up in such a way that a rinsing process specified according to the rinsing plan can be suspended or shifted if the difference before the planned start time of the specified rinsing process is at least 2.5 ° C., preferably at least 3 ° C., very preferred is at least 3.5 ° C and particularly preferably at least 4 ° C. If a difference is calculated that corresponds to these values, a significant tap operation is concluded.
  • the control unit is set up in such a way that the duration of a dispensing operation can be determined from the time course of the difference.
  • the start time of a tap is usually the time from which the difference increases. Accordingly, the end time of the dispensing process is usually the time from which the difference decreases.
  • the fact that the difference decreases again after a tap is due to the fact that the water temperature in the pipe gradually balances out due to heat transfer.
  • the duration of the tap is the time between the start and the end of the tap.
  • the control unit is set up in such a way that a predetermined flushing process can be suspended or shifted if the sum of the duration of all, preferably significant dispensing processes reaches or exceeds a defined limit value in a specific time interval before the planned start time of a specified flushing process .
  • the specific time interval before the planned start time can be, for example, one hour.
  • the exact time interval is preferably adjustable and stored in the control unit.
  • the limit value is also usually stored in the control unit and is preferably adjustable.
  • control unit decides that enough water has been exchanged due to the usage behavior of the consumers can be improved. If the control unit decides that enough water has been exchanged based on the usage behavior, it suspends or postpones the next scheduled flushing process.
  • At least two consumers are connected to the supply lines, a further temperature sensor being arranged between these consumers.
  • the further temperature sensor fulfills the function of the first temperature sensor for the consumer downstream of it.
  • the supply line comprises at least one storey line and several storey lines.
  • the floor string usually extends vertically over one or more floors.
  • a floor string usually does not extend beyond a single floor.
  • At least one consumer and a temperature sensor upstream of the consumer in the flow direction are arranged in each tier. This means that a usage profile can be created for each individual floor.
  • a flush valve is further preferably provided at the end of each tier, so that the individual floors can be flushed differently depending on the use.
  • connection of the consumers to the supply line can be provided in a variety of ways. For example, several consumers can be connected to the supply line via a flow divider. The connection can just as well be implemented via a T-piece installation or a ring installation. A supply line looped through between the connection to the public water supply network, the consumers and the flushing valve as a looped through floor installation is also conceivable.
  • a free drain is usually provided in the area of the water outlet.
  • the free flow is usually characterized by the fact that water covers a fall in the gravitational field of the earth, which either runs directly in the surrounding atmosphere or is atmospherically connected to it. This can prevent a possible backflow within a sewage pipe from entering the supply pipe.
  • An overflow monitoring device is usually also provided in the area of the free flow. This generally communicates with the control unit and / or a flow rate limiter assigned to the flushing valve, so that in the event of an impending overflow at the free outlet, the flow rate from the drinking and process water system can be regulated or reduced or even completely prevented. Additionally or alternatively, the overflow monitor can issue a warning signal, for example optically or acoustically, and / or report it to a higher-level building management system.
  • control unit is set up in such a way that the difference between the measured value of the first temperature sensor and the measured value of the second temperature sensor is compared in the control unit with a reference value.
  • the reference value can be a constant or a stored difference, determined at an earlier point in time, between the measured value of the first temperature sensor and the measured value of the second temperature sensor.
  • the reference value can also be a Reference temperature difference, which corresponds to an average or a median of a plurality of difference values.
  • the control unit is set up in such a way that the predetermined rinsing process is suspended, shifted or interrupted if the difference is greater than the reference value.
  • the reference value is preferably a constant, for example 2.5 ° C., 3 ° C., 3.5 ° C. or 4 ° C.
  • the reference value is a stored difference between the measured value of the first temperature sensor and the measured value of the second temperature sensor.
  • the difference for example, the determined difference at the same time on the previous day can be defined as the reference value.
  • the reference value is a reference temperature difference which corresponds to the median of a large number of difference values.
  • the median is preferably formed from difference values determined at an interval of one hour. For example, the last 23 difference values measured every hour on the hour can be used to calculate the median.
  • the reference value is a reference temperature difference which corresponds to the mean value from a large number of difference values.
  • the oldest difference value that is included in the calculation of the mean value is preferably at most 24 hours old at the time of the calculation.
  • the mean value is further preferably calculated at a preset time and usually stored until it is replaced or overwritten on the following day by the mean value again calculated at the preset time.
  • the reference value is a reference temperature difference which corresponds to the mean value from a multiplicity of difference values, the mean value being formed from the determined difference values of the previous day.
  • the present invention provides a method for flushing a drinking and process water system.
  • a temperature difference is formed between a temperature measured in an area in front of a flush valve and a temperature in an area in front of a consumer, on the basis of which a Control unit decides whether a flushing process is carried out, omitted or postponed.
  • Performing is understood to mean, in particular, starting or continuing. Failure to do so is, in particular, to be understood to mean stopping or not starting.
  • the area in front of the consumer is usually a line section that extends between the consumer and a connection to the public water supply network.
  • the area in front of the flushing valve is usually to be understood as a line section which extends between the flushing valve and the consumer.
  • a temperature sensor for measuring the temperature is usually provided in each of these areas.
  • a first temperature sensor is preferably assigned directly to the consumer and a second temperature sensor is assigned directly to the flush valve.
  • a flushing module of the control unit usually specifies the opening of the flushing valve at certain times and / or at certain time intervals and / or as a function of measured temperatures.
  • the difference between the measured values of the first and second temperature sensors is usually formed. This can be formed as a function of time by measuring at discrete time intervals or by continuous measuring and preferably stored. The time period to be taken into account for the decision about the rinsing is preferably adjustable.
  • the method according to the invention is preferably designed according to one or more of the developments discussed above.
  • the Figure 1 shows a schematic representation of an embodiment of a drinking and process water system of a building, not shown.
  • the building's drinking and process 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.
  • a supply line which comprises a floor string 4, is fed via the connection 2.
  • the floor string 4 extends in the vertical direction from the basement or ground floor to a second floor.
  • the first and second floors are each supplied with water by a floor line 6, which is connected to the floor line 4 and runs horizontally in the respective floor.
  • On every floor three consumers 8 are connected to the storey line 6 via a ring installation.
  • a flushing valve 10 is arranged at the end of the storey branch 6 downstream of the consumers 8 in the flow direction.
  • the purge valves 10 are connected to a control unit 12 for control purposes.
  • the control unit 12 contains a time module that specifies the control unit 12 times at which the control unit opens the flushing valves 10.
  • a time module that specifies the control unit 12 times at which the control unit opens the flushing valves 10.
  • water flows out of the drinking and process water system via a free outlet 14 into a waste water line 16.
  • a first temperature sensor 18 is arranged upstream of the consumers 8 in the flow direction before the ring installation.
  • the first temperature sensor 18 measures the water temperature in the storey line 6 in front of the consumers 8 and sends the measured temperature to the control unit 12.
  • fresh cold water flows from the connection 2 via the storey line 4 into the storey line 6.
  • the flowing fresh cold water is usually at a lower temperature than the stale water that is already in the tier.
  • the measured temperature of the first temperature sensor 18 therefore generally drops in the event of a tap operation by a consumer 8.
  • a second temperature sensor 20 is assigned to the flushing valve 10 and upstream of this directly in the flow direction.
  • the second temperature sensor 20 also continuously measures the water temperature and sends the measured values to the control unit 12.
  • the measured temperature of the second temperature sensor 20 generally changes during a tap operation of a consumer 8 on a different time scale than that of the first temperature sensor 18, since the Line section in which the second temperature sensor 20 is located is not directly flowed through by the fresh cold water, as is the case with the first temperature sensor 18.
  • the control unit 12 can therefore use an integrated logic to determine that a temperature difference between the first temperature sensor 18 and the second temperature sensor 20 occurs when a consumer 8 taps.
  • the control unit can suspend or shift a rinsing process specified by the time module.
  • the control unit 12 can be set up in such a way that a plurality of such dispensing processes, in which the limit value is exceeded, have to be registered in a fixed time window of, for example, 4 hours before the planned start time of a specified flushing process in order to decide that the specified flushing process is suspended to be moved.
  • Two further temperature sensors 22, which are each arranged between two consumers 8, are provided in the row of floors 6 on the first floor.
  • the further temperature sensors 22 also continuously measure the water temperature and send the measured values to the control unit 12.
  • the control unit 12 can compare the measured values of the further temperature sensors 22 with the measured temperatures of the second temperature sensor 20 in order to have a separate usage profile for each individual consumer 8 to create.

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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)
  • Domestic Plumbing Installations (AREA)
EP20153854.3A 2019-01-31 2020-01-27 Système d'eau potable et d'eau sanitaire et son procédé de rinçage Active EP3690151B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019201263.9A DE102019201263A1 (de) 2019-01-31 2019-01-31 Trink- und Brauchwassersystem und Verfahren zum Spülen desselben

Publications (2)

Publication Number Publication Date
EP3690151A1 true EP3690151A1 (fr) 2020-08-05
EP3690151B1 EP3690151B1 (fr) 2021-12-22

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Application Number Title Priority Date Filing Date
EP20153854.3A Active EP3690151B1 (fr) 2019-01-31 2020-01-27 Système d'eau potable et d'eau sanitaire et son procédé de rinçage

Country Status (5)

Country Link
US (1) US11225780B2 (fr)
EP (1) EP3690151B1 (fr)
CA (1) CA3069200C (fr)
DE (1) DE102019201263A1 (fr)
DK (1) DK3690151T3 (fr)

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US20210270472A1 (en) * 2018-06-26 2021-09-02 Oblamatik Ag Method for operating a water circulation system
LU102009B1 (de) * 2020-08-21 2022-02-21 Wilo Se Verfahren zum Betreiben und/ oder Überwachen einer Wasserzirkulation
DE102020006534A1 (de) 2020-10-24 2022-04-28 Joachim Klein Kostengünstige Sicherheitsvorrichtung zur einfachen Installierung zwischen einer Trinkwasserleitung und einer Nichttrinkwasserleitung, zuverlässigen hygienischen Trennung zwischen Trinkwasser und Nichttrinkwasser und zur nachhaltigen Hygienisierung zumindest eines Teils derselben
DE112021006269A5 (de) * 2020-12-03 2023-12-21 Geberit International Ag Hygienespülsystem
DE202021101228U1 (de) 2021-03-11 2021-03-22 Gebr. Kemper Gmbh + Co. Kg Trinkwasser-Installation
CN114837254B (zh) * 2022-03-31 2024-03-08 中船邮轮科技发展有限公司 减少备用系统vsp冲洗时间的舰船饮用水分配系统
CN114809195B (zh) * 2022-05-17 2023-04-18 江苏迈科道环境科技有限公司 无负压供水设备远程监控系统及方法
DE202023000983U1 (de) 2023-05-04 2023-08-04 Joachim Klein Sicherheitsvorrichtung zur einfachen Installierung zwischen einer Trinkwasserleitung und einer Nichttrinkwasserleitung, zuverlässigen hygienischen Trennung zwischen Trinkwasser und Nichttrinkwasser und nachhaltigen Hygienisierung

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EP2365141A2 (fr) * 2010-03-09 2011-09-14 Gebr. Kemper GmbH + Co. KG Metallwerke Système d'eau sanitaire
EP2500475A2 (fr) 2011-03-14 2012-09-19 VIEGA GmbH & Co. KG Procédé et dispositif pur un rinçage automatique des tuyeaux
DE102011013955A1 (de) 2011-03-14 2012-09-20 Viega Gmbh & Co. Kg Verfahren und Vorrichtung zum selbsttätigen Spülen
GB2496640A (en) * 2011-11-17 2013-05-22 William Henry Saint Flushing apparatus and method for a water system of a building
EP2722449A1 (fr) * 2012-10-19 2014-04-23 Honeywell Technologies Sarl Système d'eau potable
EP3214230A1 (fr) * 2016-03-03 2017-09-06 Uponor Innovation AB Système et procédé de rinçage d'une installation d'eau potable

Also Published As

Publication number Publication date
US11225780B2 (en) 2022-01-18
EP3690151B1 (fr) 2021-12-22
CA3069200A1 (fr) 2020-07-31
US20200248437A1 (en) 2020-08-06
DE102019201263A1 (de) 2020-08-06
DK3690151T3 (da) 2022-03-21
CA3069200C (fr) 2022-05-31

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