GB2502165A - Automatic water flushing system - Google Patents
Automatic water flushing system Download PDFInfo
- Publication number
- GB2502165A GB2502165A GB1219919.6A GB201219919A GB2502165A GB 2502165 A GB2502165 A GB 2502165A GB 201219919 A GB201219919 A GB 201219919A GB 2502165 A GB2502165 A GB 2502165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flushing
- flow
- conduit
- fluid
- outlet
- 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
Links
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 190
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000012530 fluid Substances 0.000 claims abstract description 141
- 230000006854 communication Effects 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000011144 upstream manufacturing Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 11
- 208000007764 Legionnaires' Disease Diseases 0.000 claims description 9
- 241000589248 Legionella Species 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 15
- 230000001276 controlling effect Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000007726 management method Methods 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000004023 Legionellosis Diseases 0.000 description 1
- 208000035353 Legionnaires disease Diseases 0.000 description 1
- 206010035718 Pneumonia legionella Diseases 0.000 description 1
- 208000034817 Waterborne disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001917 fluorescence detection Methods 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000003380 quartz crystal microbalance Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 108010072348 sperm releasing substance Proteins 0.000 description 1
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
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
- E03B7/07—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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Flow Control (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
A system 101 for the automated flushing of a fluid such as water in a fluid distribution arrangement. The system comprises a flushing conduit 107 branching from an outlet supply conduit 103 and leading to a discharge outlet 109, a flow control valve 111 to control the fluid flow through the flushing conduit, a temperature sensor 117 for measuring the fluid temperature which flows out of demand outlet 105 and the flushing conduit, and which generates temperature data. The system also comprises a flow sensor 119 for detecting and/or measuring the fluid flow through each of the demand outlet and the flushing conduit and generates flow data. The system also comprises a controller 113 in communication with the sensors and the flow control valve, and which operates the flow control valve in dependence on certain pre-determined criteria and/or on temperature/flow data.
Description
Rushing Svs tern
FIELD OF ThE INVENTION
This invention relates to the field of fluid monitoring and flushing systems.
In particular, the invention relates to a system, device and method lbr eontmlled flushing of fluid, especially water, to maintain water quality requirements.
BACKGROUND OF THE INVENTION
Water supply systems represent a potential health risk and are 1 0 frequently subject to regulation in relation to water quality and, in particular water-borne disease organisms such as Legionella. Legionella and other bacteria flourish in tepid, stagnant water. The bacterium, which can cause the frequently Sal Legionnaires disease, can proliferate in stagnant parts ofhot and cold water systems unless the temperature ofthose parts ofthe system are reliably regulated to be below about 20°C or above about 50°C. In normal use of a water system where a water outlet is frequently used, the regular flow of water is sufficient, provided temperatures are properly maintained, to maintain a low or minimal risk of infection. However, checks of water supply systems need to be carried out (in order to meet regulatory requirements in, lbr example, the UK), which include running water through various taps and outlets in the system and checking appropriate temperature is maintained, with particular attention to sentinel and little-used or deadleg outlets. There is a significant cost and administrative burden in ensuring that these cheeks are complied with.
Several systems and devices have been proposed to provide automated flushing and/or impmved nxrnitoring in order to allow the flushing of certain parts ofthe system to take place periodically whilst ensuring that the temperature requirements are met, in order to improve reliability and to reduce the risk of human error.
GB-A-24523 11 describes a temperature nnitoring device lbr fitting to a water supply system, such as the supply pipe lbr a tap, which device has a fluid inlet fix receiving fluid from the fluid supply pipe, a fluid outlet (which is typically plumbed to drain by-passing the taps), a flow confrol valve which is configured to periodically permit flow of fluid between the inlet and the outlet and a temperature sensor configured to measure the temperature of fluid flowing between the inlet and the outlet, preferably positioned between the first flow contml valve and the outlet. A microprocessor is provided which maybe programmed with data operable to control the flow control valve. The temperature sensor is configured to generate temperature data for a pre-determined portion of the time that the flow control valve is open and such data may be communicated to a receiver unit (e.g. by wireless communication) whereby an alarm may be raised iftemperature during the period falls outside pre-determined ranges or 1 0 criteria. One embodiment provides fix the outlet ofthe device to be connected directly to a tap where the tap is operable by an infra-red sensor, whereby flushing is conducted in-line through the tap and down the sink. The device does not enable the temperature of fluid to be monitored flowing through the outlet when in normal use and a branch flushing conduit.
WO-A-2005/1 24494 relates to a flushing system 11w automatically maintaining water quality in water delivery systems. The system comprises a water dispenser supplied via a flow contmlled passage which flow is controlled by a dispenser valve (e.g. a tap) and a discharge passage branching from the flow controlled passage upstream of the dispenser valve, which discharge passage is provided with a discharge valve operable by a programmed controller, whereby water can be flashed through the discharge passage (to drain) according to specified times or periods (e.g. at regular intervaLs, at specific times or randomly) and also based upon measured temperatures (e.g. to rermvc hot water from the system or very cold water so that the user is not scalded or the pipe does not freeze).
GB-A-2478124 describes a water sanitary management system ibr flushing part of a supply system in a manner responsive to temperature or flow rate of that part ofthe system filling outside predetermined parameters. The device which may be connected for example to a deadleg water supply and provide an outlet directly to drain thus by-passing the user-outlet, comprises a flow path and a flow control valw to regulate flushing through the flow path, which valve is linked to a microprocessor and communication device. The device may be connected to a temperature sensor (optionally by way of wireless communication with a remote monitor) provided upstream of the device whereby when sensed temperature falls outside pre-determined parameters, the flow control valve is caused to open thus flushing the part of the system concerned.
The prior art thus suffers from disadvantages that it does not provide a fully automated monitoring and flashing system ibr a water system.
1 0 The present inventor has found improvements in water systems and devices fbr monitoring and flushing ofwater systems.
PROBLEM TO BE SOLVED BY THE INVENTION
There remains a need lix improvements in Legionella protection in fluid systems, especially water systems and water supply systems.
it is an object ofthis invention to provide a system, device and method ibr the improved automated monitoring and flushing of fluid to reduce risk of bacterial growth, especially Legionalla, and to comply with local or national regulations.
SUMMARY OF THE INVENTION
In accordance with a first aspect ofthe invention, there is provided a system fbr automated flushing of fluid in a fluid distribution arrangement, the system comprising: an outlet supply conduit fbr supplying fluid from a fluid source to a demand outlet; a flushing conduit branching from the outlet supply conduit and leading to a discharge outlet, said flashing conduit fbr flftshing fluid from the outlet supply conduit to the discharge outlet; a flow control valve lbr control of flow of fluid through the flushing conduit, the flow control valve being operable between a first open position in which fluid is allowed to flow through the flushing conduit thereby causing flushing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted from flowing through the flushing conduit; a temperature sensing arrangement capable of detecting the temperature of flowing fluid both as fluid flows out a demand outlet and as fluid flows through a flushing conduit and said temperature sensing arrangement configured to generate temperature data; a flow sensing arrangement capable of detecting and/or measuring flow of fluid that flows through each ofthe demand outlet and a flushing conduit, said flow sensing arrangement being configured to generate flow data; and a controller ihr controlling the operation of the flow control valve, wherein the temperature sensing arrangement and the flow sensing arrangement are configured to transmit respectively temperature data and flow data to a central processing unit and/or to the controller; and wherein the controller is configured to operate the flow control valve and/or to transmit and/or register flow control valve operation data and/or temperature data and/or flow data in dependence of one or mere predetermined conditions and/or temperature data and/or flow data.
In a second aspect ofthe invention, there is pmvided a device fbr 1 5 automated flushing of fluid in a fluid distribution system, the device having: a primary conduit having a supply inlet and a supply outlet thr connecting in-line with an outlet supply conduit lbr supplying fluid from a fluid source to a demand outlet; a flushing conduit branching from the primary conduit and leading to a discharge outlet, said flushing conduit for flushing fluid fromthe outlet supply conduit to the discharge outlet; a flow control valve fOr control of flow of fluid through the flushing conduit, the flow control valve being operable between a first open position in which fluid is allowed to flow through the flushing conduit thereby causing flushing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted from flowing through the flushing conduit; a temperature sensing arrangement capable of detecting the temperature of flowing fluid both as fluid flows out the supply outlet and as fluid flows through the flushing conduit and said temperature sensing arrangement configured to generate temperature data; a flow semsing arrangement capable of detecting and/or measuring flow of fluid that flows through each of the supply outlet and the flushing conduit, said flow sensing arrangement being configured to generate flow data; and a controller tbr controlling the operation of the flow control valve, wherein the temperature sensing arrangement and the flow sensing arrangement are configured to transmit respectively temperature data and flow data to a central processing unit and/or to the controller; and wherein the controller is configured to operate the flow control valve and/or transmit and/or register flow control valve operation data and/or temperature data and/or flow data in dependence of one or more predetermined conditions and/or temperature data and/or flow data.
In a third aspect of the invention, there is provided a method tér controlling the flushing of fluid through a flashing conduit in a fluid distribution 1 0 arrangement, the method comprising, providing in a flushing conduit provided as a branch from an outlet supply conduit and leading to a discharge outlet a flow control valve in communication with a controller which flow control valve is operable to an open position when flushing is desired, and providing a temperature sensing arrangement the detection of the temperature of flowing fluid through each ofthe supply outlet and the 1 5 flushing conduit said temperature sensing arrangement configured to generate temperature data and a flow sensing arrangement for detecting and/or measuring flow of fluid that flows through each of the supply outlet and the flushing conduit, said flow sensing arrangement being configured to generate flow data; the method thrther comprising operating the flow control valve to cause flushing at a time and/or lbr a duration according to pre-determined criteria and/or in dependence of temperature and flow data generated.
In a fburth aspect ofthe invention, there is provided a method fin managing a water distribution system 11w Legionella risk, the method comprising providing on each sentinel outlet and preferably each little-used and dead-leg outlet, a device as described above thereby automatically controlling frequency of flushing according to the degree ofuse of each outlet.
In a fifth aspect of the invention, there is provided a system lbr automated flushing of fluid in a fluid distribution arrangement, the system comprising: an outlet supply conduit fix supplying fluid litm a fluid source to a demand outlet; a flushing conduit branching from the outlet supply conduit and leading to a discharge outlet, said flashing conduit thr flushing fluid from the outlet supply conduit to the discharge outlet; a flow control valve for control of flow of fluid through the flushing conduit, the flow control valve bcing operable bctwccn a frst opcn position in which fluid is allowed to flow through the flushing conduit thereby causing flashing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted flrm flowing through the flushing conduit; a flow sensing arrangement capable of detecting and/or measuring flow of fluid that flows through each ofthe demand outlet and a flushing conduit, said flow sensing arrangement being configured to generate flow 1 0 data; a biofllm sensor lbr sensing the presence ofbiofllm in the outlet supply conduit and configured to generate biofllm data; and a controller fbr controlling the operation of the flow control valve, wherein the bioflim sensor and the flow sensor are configured to transmit respectively biofllm data and flow data to a central processing unit and/or to the controller; and wherein the controller is configured to operate the flow control valve 1 5 and/or transmit and/or register flow control valve operation data and/or biofilm data and/or flow data in dependence of one or more predetermined conditions and/or bioflim data and/or flow data.
In a sixth aspect of the invention, there is provided a device for automated flushing of fluid in a fluid distribution arrangement, the system comprising: a priniaty conduit having a supply inlet and a supply outlet fbr connecting in-line with an outlet supply conduit lbr supplying fluid fltm a fluid source to a demand outlet; a flushing conduit branching from the primary conduit and leading to a discharge outlet, said flushing conduit fbr flushing fluid from an outlet supply conduit to the discharge outlet; a flow control valve for control of flow of fluid through the flushing conduit, the flow control valve being operable between a first open position in which fluid is allowed to flow through the flushing conduit thereby causing flushing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted fiDm flowing through the flushing conduit; a biofllm sensor lbr sensing the presence ofbiofilm in the primary conduit and configured to generate biofllm data; a flow sensing arrangement capable of detecting and/or measuring flow of fluid that flows through each of the supply outlet and the flushing conduit, said flow sensing arrangement being configured to generate flow data; and a confroller fbr controlling the operation of the flow control valve, wherein the bioflim sensor and the flow sensor are configured to transmit respectively b iofllm data and flow data to a central processing unit and/or to the controller; and wherein the controller is configured to operate the flow control valve and/or transmit and/or register flow contml valve operation data and/or biofllm data and/or flow data in dependence of one or more predetermined conditions and/or biofllm data and/or flow data.
ADVANTAGES OF TilE INVENTION The system, device and method ofthc present invention provide particular advantages in Legionella protection in that they enable rehable automatic operation to minimize Legionella risk and to automatically comply with legislation and by 1 5 reducing the risk of human error and categorization of outlets.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a diagrammatic representation of a system according to one embodiment ofthe invention; and Figure 2 shows a diagrammatic representation of a device according to one embodiment ofthe invention.
DETAILED DESCRIPTION OF THE INVENTION
The invention provides Ibr an improved method, device and system fbr the control of nonitorhig and flushing of fluid in a fluid distribution systeni The invention finds particular utility in water distribution and fix the monitoring and flushing of water in water distribution systems supplying hot and/or cold water, such as in hotels, office blocks, lhctorics, cruise ships ctc, where there maybe portions of the water distribution system that are stagnant fix a significant period of time, thus representing a potential Legiomiella risk. Hereinafter, where water' is referred to whilst being a preferred utility of the system, device and method, it should be considered to be interchangeable with fluid' where the context allows.
FlUshing conduits arc preferably provided close to an outlet such as sentinel outlets (i.e. the first and last in a loop or circuit or the last in a supply line) and in dead-legs and in association with little-used outlets which represent a particular risk.
The flushing conduits herein described arc conduits which branch from supply conduits through which water in the water distribution system is supplied to one or more outlets and, in thc case of a hot water system, optionally circulates (in the case of a recirculation 1 0 system -in this regard, circulatory supply conduit may refer to the main supply loop or subsidiary loops whilst outlet supply conduit refers to conduits emanating therefrom to supply a particular outlet). The flushing conduit leads to a discharge outlet, which may be directed to drain (i.e. bypassing the demand outlet) or alternatively, in the case of a hot water supply, may be fed into a return line of a recirculation system (whereby it will be returned to a heater lbr re-heating).
A fluid source, typically a water source, is any source of water that supplies a demand outlet and may be a mains water supply, a cold water tank, a hot water tank or water boiler or a circulatory conduit (of a hot water recirculation system) and is typically a pressurised fluid source.
A demand outlet is any outlet fbr the water being supplied, which when operable generates a demand and causes the water to flow through the outlet supply conduit and through the demand outlet. The demand outlet may be operable manually or automatically A demand outlet is typically a tap or valve supplying a hand wash sink, a bath, a shower, a toilet, a utility sink, an emergency shower or may be any other water demand device.
A flow control valve as used herein is any valve through which the flow ofwater can be regulated, fbr example fiDm Lilly on to Lilly off and optionally also to positions thcrcbctwccn. Preferably, the flow control valve is a solenoid valve. The flow control valve should be capable of communicating with a controller and optionally with a remote hub (e.g. remote cpu). The flow control valve is operable between a first open and a second closed position. The flow control valve is operable by a controller in signal communication with the flow contml valve.
The temperature sensing arrangement provided is capable of detecting the temperature of flowing fluid both as fluid flows out a demand outlet and as fluid flows through a flushing conduit. Optionally, the temperature sensing arrangement comprises two temperature sensors in signal communication with each other and/or a controller whereby the temperature of flowing fluid may be detected or measured as it flows through a demand outlet and through a flushing conduit. Prefbrably, however, the 1 0 temperature sensing arrangement comprises a temperature sensor positioned to measure the temperature of fluid in relation to an upstream portion of an outlet supply conduit (ie.
upstream of the flushing conduit) and, in the case of a device, in the primary conduit such that it will form in situ an upstream portion of an outlet supply conduit, being upstream of the flushing conduit (i.e. upstream ofwhere the flushing conduit branches from the outlet supply conduit). Any suitable temperature sensor can be used. The temperature sensor may comprise, for example, a surfitee mounted element that is nDunted on the external surface of a thermally conductive pipe (e.g. a copper or brass pipe) or may comprise a pmbe that inserts into the outlet supply conduit (or primary conduit of a device). The temperature sensor is capable of generating temperature data. The temperature data may be taken at pre-determined intervals during operation and the generated data stored locally (whereby a local data storage capacity must be pmvided) or transmitted to the eontmller or other external cpu via a communication means provided. Optionally, the data may generated and/or transmitted continuously or on demand or in certain pre-determined conditions. Preferably, the temperature data is only generated and/or transmitted when fluid is flowing through the outlet supply conduit, as may be determined bya flow sensor (e.g. ata pre-determined rate). More preferably, temperature data may be used (and optionally may only be generated and!or transmitted) only after a pre-determined period after fluid has started flowing through the outlet supply conduit. By being positioned upstream of the flushing conduit, a single temperature sensor can generate temperature data associated with fluid flowing through the outlet supply conduit when it is being flushed through the flushing conduit and when it is being drawn through the demand outlet by a user.
Optionally, the tempcrature sensing arrangement, e.g. temperature sensor, is configured to have a standby mode and an operational mode, whereby in standby mode the temperature sensing arrangement is configured not to make temperature measurements or is configured not to transmit temperature data, whereas in operational mode, the temperature sensing arrangement is configured to make temperature measurements and/or to transmit temperature data according to certain 1 0 predetermined criteria. Preferably, the temperature sensing arrangement is in standby mode unless it is triggered to switch to operational mode when flow is detected (e.g. by operation of a demand outlet by a user or an active flushing instance by the system) or when flow lbr a predetermined period oftime and/or at a pre-determined rate is detected. Thereby, the power requirement to operate a temperature sensing arrangement and/or to transmit data maybe reduced to meet requirements and data is only generated and/or transmitted when a check lbr compliance is desired (thus avoiding multiple false negatives).
Hereinafter temperature sensor and temperature sensing arrangement may be used interchangeably where the context allows.
A flow sensing arrangement is provided ibr detecting and/or measuring flow of fluid that flows through each of the demand outlet and a flushing conduit. The flow sensing arrangement may comprise any suitable arrangement of flow sensors capable of achieving such detection and/or measurement. Prcfbrably, the flow sensing arrangement is a flow sensor provided in relation to an upstream portion of an outlet supply conduit of a system and, in the case of a device, in the primaiy conduit such that it will form in situ an upstream portion of an outlet supply conduit, being upstream of the flushing conduit (i.e. upstream ofwhere the flushing conduit branches from the outlet supply conduit). The flow sensor should be configured to detect when fluid is flowing through the outlet supply conduit and preferably the rate of fluid flow through the outlet -10-supply conduit. The flow sensing arrangement is capable of generating flow data, which may be flowing'not flowing data, but is preferably quantitative data, e.g. rate of flow. By being a single flow sensor positioned upstreamofthe flushing conduit according to the preferred embodiment, the flow sensor can generate flow data associated with thc outlet supply conduit when it is being flushed through the flashing conduit and when it is being drawn through the demand outlet by a user. Flow data is preferably transmitted to the controller or other external Cpu, such as a central hub, and optionally may be transmitted directly to the temperature sensing arrangement (e.g. temperature sensor), such as to cause temperature data associated with flowing fluid to be generated and/or transmitted 1 0 and/or stored. Any suitable flow sensor may be used.
Hereinafter flow sensor and flow sensing arrangement may be used interchangeably where the context allows.
Preferably, both the temperature sensor and the flow sensor are provided upstream ofthe flushing conduit or, in the case of a device, are provided on 1 5 the same side of a primary conduit relative to the flashing conduit such that they can be fitted in an outlet supply conduit upstream ofthe flushing conduit. Preferably the flow sensor is configured to be upstream of the temperature sensor.
A biofilm sensor, which is an optional additional feature of the main aspect of the invention, may be provided in association with the outlet supply conduit (or with the primary conduit of a device) either upstream or downstream of the flashing conduit, or in the flushing conduit (e.g. downstream of the flow control valve) but preferably in the outlet supply conduit upstream (or so as to be upstream) ofthe flushing conduit. The bioflim sensor is capable of generating bioflim data. The bioflim sensor is preferably pmvided with a data communication means lbr transmitting data to the controller or to another extemal cpu. Bioflim data indicative ofthe presence ofbiofilm or lilling outside certain pre-determined parameters maybe used to cause the flashing of the device and/or trigger an alarm or alarm sequence. For example, should a single incidence ofbiofilm indicative data be recorded, the particular outlet maybe examined rmre thoroughly during the next manual inspection. However, should a significantly high -11-reading be identified or data representative ofbioflhlm incidence persistently be presented, an alarm or alarm sequence may be triggered (e.g. system shut-off e.g. using an automated trip valve, or message sent to maintenance services or proprietor).
Optionally, the biofllm sensor may be calibrated fix the particular system whereby a steady-state level ofbiofilm normal for the materials and nature of the system may be determined (for example for determining a normal biofllm sensor data level ofbiofilm corroborated with biological data flrm water and biofllm sampling) whereby deviations from the steady state will be higiuligiited.
Thus biofllm data representative ofthe presence or a pre-determincd 1 0 increase in bioflim may be used to contml flushing and/or to monitor the presence of biofllm in flowing fluid conditions.
The biofllm sensor may be any suitable biofllm sensor, optionally sampling water, but preferably operable by in-situ or non-invasive technique, such as conductivity or turbidity. A biofilm sensor may comprise, Lw example, a mechanical 1 5 sensor such as a quartz crystal microbalance system incorporating a quartz crystal resonator in the conduit, a thennil dillElision sensor (such as a N eosens FSTM device available fromNeosens AS) which show; a degradation of thermal diflhsion into flowing liquid in the presence ofbiofllm, a fibre-optical biofilm nnnitoring device (such as that provided by Onvida (imbH), a piezoeleetrie sensor, differential turbidity sensor, or biophysical sensor such as a fluorescence detection system (such as that available flum OptiQuad TM) in order to identi& induced fluorescence spectra for known contaminants in biofllm or a bmad spectrum fluorescence indication common to biofllm contaminants.
Preferably, the biofllm sensor operates by UV-vis spectroscopy Any suitable system ibr biolllm sensing may be used of which several are known in the art and may be adapted fbr the present purpose.
Data from the one or more sensors or sensing arrangements, i.e. from one or more of a temperature sensing arrangement (e.g. a temperature sensor), flow sensing arrangement (e.g. flow sensor) and biofilm sensor may independently be communicated to one or more of the controller, another external cpu such as a main hub -12-or external server or to any other location as desired. Preferably, the data from each device is communicated to the controfler.
A controller is preferably a control processor provided in a mini cpu, optionally in association with a display screen The controller is in signal communication with at least the flow control valve and preferably in signal communication with one or mire of a temperature sensor, a flow sensor and a biofllm sensor. Preferably, the controller is programmed to operate the flow control valve to enable flushing of fluid through the flushing conduit (which will be referred to herein as a flushing occurrence) a pre-determined duration according to certain pre-determined criteria, such as 1 0 according to the interval since the preceding flushing occurrence (e.g. period flushing at regular intervals) or according to the time of day (e.g. it may be programmed to flush at the beginning of each work shift or prior to use as determined by usage of a room containing the outlet being booked, which data may be provided by an associated booking system, optionally in addition to periodic flushing at regular intervaLs) or in 1 5 dependence on certain flow and/or temperature and/or biofilm data.
Optionally, the controller may be instructed to operate the flow control valve to cause flushing as directed by instructions from an external device, e.g. on demand or in dependence on certain flow and/or temperature and/or biofllrn data as described above which instead ofbeing communicated directly to the controller is communicated to an external device or cpu.
For example, the controller may be programmed to operate the flow control valve to cause a flushing occurrence lbr a certain duration according to an interval, which interval may depend on the typical usage frequency of the particular outlet. For example, the interval may be seven days and the duration may be two minutes (or a period that may be representative of the flushing of a pre-detemiined quantity of fluid).
By providing a flow sensing arrangement and a temperature sensing arrangement in accordance with the present invention, such as by providing a flow sensor and a temperature sensor (and optionally biofllm sensor) in the outlet supply -13-conduit (e.g. in the primary conduit of a device) upstream ofthe flushing conduit, temperature data (and flow data and option& biofilm data) maybe generated and communicated in respect of a flushing occurrence (i.e. monitoring may take place during flushing). The data (e.g. temperature data) may be monitored to determine if the flushing occasion is adequate (i.e. fills within pre-determined parameters as required to comply lbr example with regulation or to achieve a certain desired level ofrisk concerning water quality and condition) or inadequate (fails to meet pre-determined criteria). In the case of a cold water supply, fér example, an adequate flushing occurrence may be achieved if water is maintained at a temperature below 20°C for an entire duration (e.g. oftwo 1 0 minutes) ofthe flushing or portion thereof (e.g. the duration during which relevant data is monitored may optionally begin a period after flushing has begun). In the ease of a hot water supply, lbr example, an adequate flushing occurrence may be achieved if water reaches or exceeds a temperature of 50°C at any time during the duration (e.g. oftwo minutes) ofthe flushing or portion thereof 1 5 Further, by proding a flow sensing arrangement and a temperature sensing arrangement in accordance with the present invention, such as by providing a flow sensor and a temperature sensor (and optionally biofllm sensor) in the outlet supply conduit (e.g. in the primary conduit of a device) upstream of the flushing conduit, temperature data (and flow data and optional biofilni data) may be generated and communicated when the outlet is in normal use. Thus continuous usage data can be obtained. This is particularly usefhl in identil'ing the usage demands of each outlet in a system, which might otherwise not be known and the potentially at risk (or lesser used) outlets. It is particular useflil in that normal usage can be used for monitoring and flushing requirements. For example, should in noniial use the required volume of fluid flow and/or period of fluid flow be detected in a single instance by the flow sensor, the flow occurrence may be considered a user-flushing occurrence and thus the data produced during the user-flushing occurrence may be used for monitoring purposes.
Thus, iflbr example the temperature data produced during a user-flushing occurrence meets the pre-determined requirements, that flushing occurrence may be deemed -14-adequate to satis1' whatever monitoring requirements are implemented. In a preferred embodiment, in which the controfler is configured to cause flushing and monitor data at regular intervals, the controller is thrther configured such that an adequate user-flushing occurrence causes the interval until the next flushing to be re-started. This embodiment has the benefit that water is saved (and in the ease of hot water, energy iör heating the water is saved), since the flush (e.g. two minutes) is to drain. Thus, each occasion of demand at the outlet that meets the user-flushing occurrence criteria saves a flushing amount of water (i.e. that amount of water that would otherwise be flushed to meet the monitoring and flashing requirements) and corresponding thermal energy. At frequently 1 0 used sentinel outlets, this can result in a significant water, energy and cost saving for the operator of the water distribution system.
Preferably, the controller is configured to operate the valve (to its open position) Ibr a pre-determined duration at pre-determined intervals. More preferably, the intervals are subject to being restarted when a user-flushing occurrence meeting required pre-determined criteria occurs during an interval. Optionally, where data from usage indicates a potential problem, a flushing occurrence is initiated by the controller and the interval then restarted. Optionally, when a flushing occurrence or user-flushing occurence is deemed inadequate according to the predetermined criteria, a message or alarm or message/alarm sequence may be initiated.
The controller and optionally one or more sensors may be in signal communication (e.g. bi-directional communication) with another external cpu, optionally by wireless communication, whereby data from at least the controller and optionally one or more sensors may be monitored and any determinations or calculations calculated at said another extemal cpuor fttrther communicated lbr such determination or calculation.
The system or device ofthe invention preferably comprises a flow sensing arrangement in combination with a temperature sensing arrangement and/or a biofllm sensor each positioned and configured as described above, which are in signal communication with a controller. The controller may be wired or wireless connected to the sensors, typically in hard wired connection and preferably the controller is connected -15-to a battery (or other stand-alone power supply) which also provides required power for thc scnsors and any wireless communication dcviccs. Optionally, such a systcm or device is a stand alone system which operates according to a resettable timer, but prcfcrably is capable of communicating data, c.g. compliance or non-compliance data, to a remote ccntral hub or rcimtc main control unit. Optionally, a rcmotc main control unit may be operable to over-ride and take control of a local controller (e.g in the case of a non-compliance rcport or alarm or alarm scqucncc bcing raised).
In a preferred embodiment ofthe invention, the system and device comprises a tcmperature scnsor, flow sensor and biofilm scnsor provided in or fbr 1 0 association with an upstream portion of an outlet supply conduit, a flow control valve in a flushing conduit and a controller in signal communication with each ofthe flow control valve, for which it is operably responsible, and the temperature, flow and biofllm sensor, wherein the controller is configured to operate the flow control valve to induce flushing occurrences for a predetermined duration at predetermined intervaLs, which intervals 1 5 may optionally be restarted or interrupted with further flushing occurrences depending upon temperature, flow and/or bioflim data generated by respective sensors.
Preferably, the flushing conduit is provided with a means for preventing back-flow of the water into the water supply, which means is preferably a one-way valve.
Optionally, where an automated antibacterial dosing system is configured with a water system or water distribution system, a non-compliance e.g. a biofllm measurement outside pre-determined parameters or as part of an alarm sequence as rcfbrred to above, may be configured to cause a dosing event, in certain circumstances depending on the usage demand/requirements. A dosing event may comprise of a dosing of a pre-determined quantity of an antibacterial agent, such as chlorine dioxide, into a water system or portion thereof coupled with flushing of each of the fluid outlets associated with the system or portion thereof for a period sufficient to flush out the prc-delcrmined dose of agent. -16-
In another aspect of the invention, there is a system tbr management of a water distribution system thr Legionnella protection, the management system comprising one, two or more automated flushing systems (optionally being flushing devices fitted in-line to outlet supply conduits), each having a controller for controlling the operation of a flow-control valve on a flushing conduit, provided on one, two or more outlet supply conduits and a main hub in signal communication (preferably wireless signal communication) with each said automated flushing system/device. The wireless communication (according to this aspect and previous aspects) may be by any suitable means, e.g. SMS, GSM, SPRS, SRD, low power radio, infrared WiFiTM BluetoothTM 1 0 or other wireless communication protocols, but prelèrably by radiofrequency signal.
Preferably, the main-hub, being a cpu or an external sewer (e.g. via the internet) hosts current and optionally historic data generated and communicated by the controller and/or sensors. Preferably, the main-hub or external server is accessible to facilities personnel (e.g. facilities manager and other authorised users, such as maintenance 1 5 providers) lbr viewing and optionally manipulating data, criteria etc as required. The host preferably is capable of acting as or generating a log-book/return compliant with regulatory requirements ibr water management (e.g. UK regulatory requirements).
Preferably, the system comprises a plurality of automated flushing systems/devices provided on each hop or leg ofthe system and, in particular preferably on any one or more or all of each sentinel outlet, each dead-legs and each little-used outlet and, optionally, each other outlet of each loop or leg.
The management system and the automated flushing system aspects of the present invention provide benefits of detecting leaks, reduces wastage of heat and/or water, identifies usage rates (and may be able to reniwe dead-legs or little used outlets from the respective registers, thus saving on inspection costs).
The invention will now be described in nine detail, without limitation, with relrence to the accompanying Figures. -17-
In Figure 1, a flushing system 101 fbr flushing water in a water supply system having a watcr outlet supply conduit 103 supplying water to a demand outlet, suchas ahot or cold tap 105, froma supply source, suchas ahot or cold watertank, mains supply, or water heater via a circulating supply line or otherwise has branching therefrom a flushing conduit 107 for periodically, intermittently or occasionally flushing water lixm the outlet supply conduit through the flushing conduit to a discharge outlet 109. Flow ofwater through the flashing conduit is regulated by a flow control valve 111 operable in a first open position from a second closed position, the operation of which is controlled by controller 113. Located in an upstream portion 115 ofthe water outlet 1 0 supply conduit 1 03 is a temperature probe 117 lbr monitoring the temperature of water in or flowing thmugh the outlet supply conduit 103, a flow sensor 119 11w sensing and measuring the flow ofwater through the outlet supply conduit 103 and, optionally, a biofllm sensor or biosensor 121 for detecting the presence ofbiofllm or bacteria in the water in the outlet supply conduit, e.g. when water is flowing therethrough, each of 1 5 which sensors is capable of generating data which may be transmitted to a central processing unit located in controller 113.
In Figure 2 a flushing device 201 for providing Legionella protection to a water supply system by fitting to a water supply outlet conduit is illustrated. The device 201 comprises a housing having a primary conduit 224 and a flushing conduit 207 which in situ will be connected e.g. to a drain (not shown) for flushing water from the outlet supply conduit which the primary conduit 224 will form a part of when fitted (at supply inlet 227 and supply outlet 229) and formed in association with the primary conduit 224 for providing upstream ofthe flashing conduit 207 when lifted a temperature probe 217, flow sensor 219 and biofllm sensor 221. A flow control valve 211 is provided in flushing conduit 207, the flow control valve 211 being operable between a first open position allowing the flow of fluid through the flushing conduit 207 and a second closed position preventing the flow of fluid thmugh the flushing conduit 207, the operation being controlled by controller 213 located within the housing 223. The controller 213 is in signal and data communication with each of the flow control valve 211, the temperature -18-probe 217, the flow sensor 219 and the bbfilm sensor 221 and each is powered by a battery 231 (or other power supply).
In use, a device 201 may be fitted in-line into an outlet supply conduit of a water distribution system, say a sentinel outlet tap. A device may be fitted to each of the hot and cold outlet supply conduit. The controller 213 Iör the hot outlet supply conduit may be configured to nirnitor weekly, thus the eontmller 213 is configured with a countdown clock to countdown for 7 days. Once countdown is complete, the controller 213 will operate the valve 221 to perfbrm a flush lbr a pre-determined duration, typically 2 minutes. During the flush, flow sensor 219 will detect flow through the primary conduit 224, generating flow data which is transmitted to the controller 213 and causing (either via direct communication signal or via the contmller 213) temperature data to be generated and/or transmitted to the controller 213 by the temperature sensor 217. The device 201 and, in particular the controller 213, is in signal communication via radiofrequency signal using RF signal devices 235 with a 1 5 central hub 233, which gathers data and eentralises communication with each device in the system or portion ofthe systent The central hub 233 is tieally in data communication with an external sewer host 237 via the internet. The external sewer host 237 (and optionally the central hub 233) provides a user interface via an internet connection whereby an authorised user (e.g thcilities personnel) can view current operation, current data and historical data fbr the devices in the system The system software may be pmgrammed with pre-determined criteria according to determine the adequacy of a monitoring event.
In the present example, the temperature data sensed during flushing by temperature sensor 217 may be transmitted via the controller 213 and central hub 233 to the external sewer. System software may compare temperature data transmitted with pre-determined criteria thr the particular device 201 and, e.g. if the temperature exceeded a pre-detemtined parameter such as 50°C during the two minute flush, the nInitoring may be considered adequate and the data logged. If the temperature data fell outside pre-determined specification (e.g. did not reach 50°C during the two minute -19-flush), the monitoring event (or flushing occurrence) may be recorded as inadequate and may initiate an alertmcssagc or alert/message escalation sequence (e.g. warning email to user or instruction to maintenance provider).
By providing the flow sensor 219 and temperature sensor 217 in the primary conduit, the flow sensor 219 will detect fluid flow through the outlet supply conduit of a system caused by user demand at the demand outlet. Thus, temperature data (and bioflim data) will be caused to be generated by the temperature sensor 217 and biofllm sensor 221 and the same transmitted to the controller and optionally onto the system software host (external server) 237. Should a user induced flow continue lix a 1 0 period corresponding to at least that required lbr a monitoring event or flushing occurrence lbr this device 201, the flow even will be considered a user-flushing occurrence valid lbr nnnitoring and the temperature and bioflim data will be transmitted as temperature and biofllm monitoring data. The controller 213 will re-start the interval countdown of seven days, thus the frequency of controller induced flushing occurrences 1 5 will be reduced, potentially leading to significant water and energy savings.
Biofllm data generated by biofllm sensor 221 is preferably generated during flow as detected by flow sensor 219 and such biofllm sensor transmitted to the central hub or 233 or external server host 237, e.g. via controller 213, fbr assessment against pre-determined or steady-state bioflim data. An indication ofbiofllm or significant variance from steady-state conditions may indicate an increase in Legionnella or other bacterial disease risk and an appropriate alert/action will be triggered, e.g. automated shut down of demand outlet, message to user (e.g. facilities manager), automated flushing of system. etc. The invention has been described with reference to a preferred embodiment. However, it will be appreciated that variations and modifications can be eflécted by a person of ordinary skill in the art without departing from the scope ofthe invention.
-20 -
Claims (14)
- CL%JMS: 1. A system for automated flushing of fluid in a fluid distribution arrangement, the system compnsing: an outlet supply conduit for supplying fluid from a fluid source to a demand outlet; a flushing conduit branching from the outlet supply conduit and leading to a discharge outlet, said flushing conduit lbr flushing fluid from the outlet supply conduit to the discharge outlet; a flow control valve fbr contml of flow of fluid through the flushing conduit, the flow control valve being operable between a first open position in which fluid is allowed to flow through the flushing conduit thereby causing flushing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted flDm flowing through the flushing conduit; a temperature sensing arrangement capable of detecting the temperature of flowing fluid both as fluid flows out a demand outlet and as fluid flows through a flushing conduit and said temperature sensing arrangement configured to generate temperature data; a flow sensing arrangement capable of detecting and/or measuring flow of fluid that flows through each of the demand outlet and a flushing conduit, said flow sensing arrangement being configured to generate flow data; and a controller fbr controlling the operation ofthe flow control valve, wherein the temperature sensing arrangement and the flow sensing arrangement are configured to transmit respectively temperature data and flow data to a central processing unit and/or to the contmller; and wherein the controller is configured to operate the flow contml valve and/or transmit and/or register flow control valve operation data and/or temperature data and/or flow data in dependence ofone or nure predetermined conditions and/or temperature data and/or flow data.-21 -
- 2. A system as claimed in claim 1, which fUrther comprises a biofllm sensor positioned for detecting the presence ofbiofllm in the outlet supply conduit or the flushing conduit and capable of generating biofilm data, the biofllm sensor being S configured to transmit data to a central processing unit and/or to the controller.
- 3. A system as claimed in claim 1 or claim 2, wherein the temperature sensing arrangement is configured only to transmit temperature data when the flow sensing arrangement detects flow or flow at a pre-determined rate.
- 4. A system as claimed in any one of the preceding claims, wherein the controller is configured to operate the flow control valve after a pre-deflned interval following the preceding flushing occurrence.
- 5. A system as claimed in claim 4, wherein the interval restarts following a user-flushing occurrence.
- 6. A system as claimed in any one of the preceding claims, which comprises a biofllm sensor as defined in claim 2, wherein the biofllm sensor is configured to generate biofllm data and/or transmit bioflim data and wherein the controller is configured such that a bioflim presence detected according to pre-determined criteria causes a flushing occurrence to take place and/or an alarm or alarm sequence to be initiated and/or a dosing event to be initiated.
- 7. A device for automated flushing of fluid in a fluid distribution system, the device having, preferably in a housing: a primary conduit having a supply inlet and a supply outlet for connecting in-line with an outlet supply conduit for supplying fluid from a fluid source to a demand outlet; -22 -a tlusltg conduit branching fromthe primary conduit and leading to a discharge outlet, said flushing conduit for flushing fluid from the outlet supply conduit to the discharge outlet; a flow control valve tbr contml of flow of fluid through the flushing conduit, the S flow control valve being operable between a first open position in which fluid is allowed to flow through the flushing conduit thereby causing flushing ofthe fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted from flowing through the flushing conduit; a temperature sensing arrangement capable of detecting the temperature of flowing fluid both as fluid flows out the supply outlet and as fluid flows through the flushing conduit and said temperature sensing arrangement configured to generate temperature data; a flow sensing arrangement capable of detecting and/or measuring flow of fluid that flows thmugh each of the supply outlet and the flushing conduit, said flow sensing arrangement being configured to generate flow data; and a controller lbr controlling the operation ofthe flow control valve, wherein the temperature sensing arrangement and the flow sensing arrangement are configured to transmit respectively temperature data and flow data to a central processing unit andlor to the controller; and wherein the controller is configured to operate the flow control valve and/or transmit and/or register flow control valve operation data and/or temperature data and/or flow data in dependence ofone or more predetermined conditions and/or temperature data and/or flow data.
- 8. A device as claimed in claim 7, which further comprises a bioflim sensor positioned lbr detecting the presence ofbiofilm in the primary conduit or the flushing conduit and capable ofgenerating biofllm data, the bioflim sensor being configured to transmit data to a central processing unit and/or to the controller.-23 -
- 9. A device as claimed in claim 7 or claimS, which further comprises the features ofanyoneofclaims3 to 6.
- 10. A method lbr controlling the flushing of fluid through a flushing conduit in a fluid distribution arrangement, the method comprising, providing in a flushing conduit provided as a branch from an outlet suppiy conduit and leading to a discharge outlet a flow control valve in communication with a controller which flow control valve is operable to an open position when flushing is desired, and providing a temperature sensing arrangement for the detection ofthe temperature of flowing fluid through each of the supply outlet and the flushing conduit said temperature sensing arrangement configured to generate temperature data and a flow sensing arrangement for detecting and/or measuring flow of fluid that flows through each of the supply outlet and the flushing conduit said flow sensing arrangement being configured to generate flow data; the method thrther comprising operating the flow control valve to cause flushing at a time and/or for a duration according to pre-determined criteria and/or in dependence of temperature and flow data generated.
- 11. A method for managing a water distribution system fbr Legionella risk, the method comprising providing on each sentinel outlet and preferably each little-used and dead-leg outlet, a device as described above thereby automatically controlling frequency of flushing according to the degree ofuse of each outlet.
- 12. A system for automated flashing of fluid in a fluid distribution arrangement, the system comprising: an outlet supply conduit fbr supplying fluid from a fluid source to a demand outlet; a flashing conduit branching from the outlet supply conduit and leading to a discharge outlet, said flushing conduit fbr flushing fluid from the outlet supply conduit to the discharge outlet; -24 -a flow control valve fbr contml of flow of fluid through the flushing conduit, the flow control valve being operable between a first open position in which fluid is allowed to flow thmugh the flushing conduit thereby causing flushing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted from flowing through the flushing conduit; a bioflim sensor thr sensing the presence ofbiofllm in the outlet supply conduit, the biofllm sensor positioned to detect the presence ofbiofllm through the outlet supply conduit at a point upstream of the flushing conduit and configured to generate bioflim data; and a controller ibr controlling the operation ofthe flow control valve, wherein the biofllm sensor is configured to transmit biofilm data to a central processing unit and/or to the controller; and wherein the controller is configured to operate the flow control valve and/or transmit and/or register flow control valve operation data and/or biofllm data in dependence of one or rmre predetermined conditions and/or biofllm data.
- 13. A device fix automated flushing of fluid in a fluid distribution arrangement, the system comprising: a primary conduit having a supply inlet and a supply outlet thr connecting in-line with an outlet supply conduit fbr supplying fluid from a fluid source to a demand outlet; a flashing conduit branching fromthe primary conduit and leading to a discharge outlet, said flushing conduit for flushing fluid from an outlet supply conduit to the discharge outlet; a flow control valve fix control of flow of fluid through the flushing conduit, the flow control valve being operable between a frst open position in which fluid is allowed to flow through the flushing conduit thereby causing flushing of the fluid in the outlet supply conduit to the discharge outlet and a second closed position in which the fluid is restricted from flowing through the flushing conduit; -25 -a bioflim sensor tbr sensing the presence ofbiofilm in the primary conduit, the bioflim sensor positioned to detect the presence ofbiofilm through the primary conduit at a point upstream of the flushing conduit and configured to generate bioflim data; a flow sensing arrangement capable of detecting and/or measuring flow of fluid that flows thmugh each of the supply outlet and the flushing conduit, said flow sensing arrangement being configured to generate flow data; and a controller ibr controlling the operation ofthe flow control valve, wherein the bioflim sensor and the flow sensing arrangement are configured to transmit respectively bioflim data and flow data to a central processing unit and/or to the controller; and wherein the controller is configured to operate the flow control valve and/or transmit and/or register flow control valve operation data and/or temperature data and/or flow data in dependence ofone or riore predetermined conditions and/or biofllm data and/or flow data.
- 14. A device or system as hereinbcfbre described with refemnce to the drawings.-26 -
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB1208417.4A GB201208417D0 (en) | 2012-05-14 | 2012-05-14 | Flushing system |
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| GB2502165A true GB2502165A (en) | 2013-11-20 |
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| GB1219919.6A Active GB2502165B (en) | 2012-05-14 | 2012-11-06 | Flushing system |
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| GBGB1208417.4A Ceased GB201208417D0 (en) | 2012-05-14 | 2012-05-14 | Flushing system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120234398A1 (en) * | 2011-03-14 | 2012-09-20 | Viega Gmbh & Co. Kg | Method and Device for Automatic Flushing |
| CN104895147A (en) * | 2014-03-06 | 2015-09-09 | 许耿祯 | Water saving device and method for water supplementing system |
| NL2015496B1 (en) * | 2015-09-23 | 2017-04-20 | Stn B V | Device for and method of fluid flow monitoring. |
| WO2018104738A1 (en) * | 2016-12-08 | 2018-06-14 | Omnia-Klenz Ltd | Fluid distribution monitoring system and method of use thereof |
| EP3364114A1 (en) * | 2017-02-20 | 2018-08-22 | Albert Hadwiger | Flushing device for flushing a water line |
| EP3375939A1 (en) * | 2017-03-14 | 2018-09-19 | Schell GmbH & Co. KG | Method for controlling a building water supply system |
| WO2019072805A1 (en) * | 2017-10-09 | 2019-04-18 | Viega Technology Gmbh & Co. Kg | Drinking water supply system with drinking water quality monitoring function, method for controlling same, and computer program |
| EP3550085A1 (en) * | 2018-04-04 | 2019-10-09 | Campbell & Kennedy Maintenance Ltd | Apparatus for remotely inhibiting bacteria growth in a water supply |
| DE102018009511A1 (en) * | 2018-09-21 | 2020-03-26 | Rico Andres | Flushing device, system and method for performing hygienic flushing |
| EP3835495A3 (en) * | 2019-12-09 | 2021-09-01 | Rico Andres | Spray device, system and method for carrying out hygienic washes |
| DE102022131432A1 (en) | 2022-11-28 | 2024-05-29 | Robert Färber | DEVICE AND SYSTEM AS WELL AS USE AND METHOD FOR REDUCING OR AVOIDING LEGIONELLA BURDEN IN DRINKING WATER INSTALLATIONS |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11316908B1 (en) | 2021-02-01 | 2022-04-26 | Zurn Industries, Llc | BACnet conversion of water management data for building management solutions |
| US11221601B1 (en) | 2021-05-24 | 2022-01-11 | Zurn Industries, Llc | Various IoT sensory products and cloud-purge for commercial building solutions utilizing LoRa to BACnet conversion for efficient data management and monitoring |
| US11573539B1 (en) | 2021-09-03 | 2023-02-07 | Zurn Industries, Llc | Managing edge devices in building management systems |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005124494A2 (en) * | 2004-06-09 | 2005-12-29 | Taylor Thomas M | Automatic stagnant water flushing system |
| GB2478124A (en) * | 2010-02-24 | 2011-08-31 | City Water & Environmental Consultants Ltd | Water Sanitary Management System |
-
2012
- 2012-05-14 GB GBGB1208417.4A patent/GB201208417D0/en not_active Ceased
- 2012-11-06 GB GB1219919.6A patent/GB2502165B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005124494A2 (en) * | 2004-06-09 | 2005-12-29 | Taylor Thomas M | Automatic stagnant water flushing system |
| GB2478124A (en) * | 2010-02-24 | 2011-08-31 | City Water & Environmental Consultants Ltd | Water Sanitary Management System |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695577B2 (en) * | 2011-03-14 | 2017-07-04 | Viega Technology Gmbh & Co. Kg | Method and device for automatic flushing |
| US20120234398A1 (en) * | 2011-03-14 | 2012-09-20 | Viega Gmbh & Co. Kg | Method and Device for Automatic Flushing |
| CN104895147A (en) * | 2014-03-06 | 2015-09-09 | 许耿祯 | Water saving device and method for water supplementing system |
| NL2015496B1 (en) * | 2015-09-23 | 2017-04-20 | Stn B V | Device for and method of fluid flow monitoring. |
| WO2018104738A1 (en) * | 2016-12-08 | 2018-06-14 | Omnia-Klenz Ltd | Fluid distribution monitoring system and method of use thereof |
| EP3364114A1 (en) * | 2017-02-20 | 2018-08-22 | Albert Hadwiger | Flushing device for flushing a water line |
| EP3375939B1 (en) | 2017-03-14 | 2021-08-04 | Schell GmbH & Co. KG | Method for controlling a building water supply system |
| EP3375939A1 (en) * | 2017-03-14 | 2018-09-19 | Schell GmbH & Co. KG | Method for controlling a building water supply system |
| US11085174B2 (en) | 2017-10-09 | 2021-08-10 | Viega Technology Gmbh & Co. Kg | Drinking water supply system with volume or pressure control function, method for controlling same, and computer program |
| CN111212950A (en) * | 2017-10-09 | 2020-05-29 | 维家技术有限及两合公司 | Drinking water supply system with drinking water quality monitoring, control method thereof and computer program |
| WO2019072805A1 (en) * | 2017-10-09 | 2019-04-18 | Viega Technology Gmbh & Co. Kg | Drinking water supply system with drinking water quality monitoring function, method for controlling same, and computer program |
| US11499299B2 (en) | 2017-10-09 | 2022-11-15 | Viega Technology Gmbh & Co. Kg | Drinking water supply system having an acoustic sensor or a presence detector, method for controlling the same, and computer program |
| US11680392B2 (en) | 2017-10-09 | 2023-06-20 | Viega Technology Gmbh & Co. Kg | Drinking water supply system with groupwise control, method for controlling the same, and computer program |
| EP3550085A1 (en) * | 2018-04-04 | 2019-10-09 | Campbell & Kennedy Maintenance Ltd | Apparatus for remotely inhibiting bacteria growth in a water supply |
| DE102018009511A1 (en) * | 2018-09-21 | 2020-03-26 | Rico Andres | Flushing device, system and method for performing hygienic flushing |
| EP3835495A3 (en) * | 2019-12-09 | 2021-09-01 | Rico Andres | Spray device, system and method for carrying out hygienic washes |
| DE102022131432A1 (en) | 2022-11-28 | 2024-05-29 | Robert Färber | DEVICE AND SYSTEM AS WELL AS USE AND METHOD FOR REDUCING OR AVOIDING LEGIONELLA BURDEN IN DRINKING WATER INSTALLATIONS |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2502165B (en) | 2014-11-12 |
| GB201219919D0 (en) | 2012-12-19 |
| GB201208417D0 (en) | 2012-06-27 |
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