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AU2022282801B2 - Liquid delivery system - Google Patents

Liquid delivery system Download PDF

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Publication number
AU2022282801B2
AU2022282801B2 AU2022282801A AU2022282801A AU2022282801B2 AU 2022282801 B2 AU2022282801 B2 AU 2022282801B2 AU 2022282801 A AU2022282801 A AU 2022282801A AU 2022282801 A AU2022282801 A AU 2022282801A AU 2022282801 B2 AU2022282801 B2 AU 2022282801B2
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Australia
Prior art keywords
liquid
piping
pressure vessel
delivery
treated
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AU2022282801A
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AU2022282801A1 (en
AU2022282801A9 (en
Inventor
John Ford
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Pressure Pulse Systems Pty Ltd
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Pressure Pulse Systems Pty Ltd
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Priority claimed from AU2021901582A external-priority patent/AU2021901582A0/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0015—Domestic hot-water supply systems using solar energy
    • F24D17/0021—Domestic hot-water supply systems using solar energy with accumulation of the heated water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/048—Systems for collecting not used fresh water
    • 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
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/044—Water-basin installations specially adapted to wash-basins or baths having a heating or cooling apparatus in the supply line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0026—Domestic hot-water supply systems with conventional heating means
    • F24D17/0031—Domestic hot-water supply systems with conventional heating means with accumulation of the heated water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0036—Domestic hot-water supply systems with combination of different kinds of heating means
    • F24D17/0063—Domestic hot-water supply systems with combination of different kinds of heating means solar energy and conventional heaters
    • F24D17/0068—Domestic hot-water supply systems with combination of different kinds of heating means solar energy and conventional heaters with accumulation of the heated water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0094—Recovering of cold water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/223—Temperature of the water in the water storage tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
    • F24H15/429—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting operation modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
    • F24H15/436—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting sleeping modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0278—Expansion vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/156—Reducing the quantity of energy consumed; Increasing efficiency
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/335—Control of pumps, e.g. on-off control

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Fluid Mechanics (AREA)
  • Pipeline Systems (AREA)
  • Physical Water Treatments (AREA)

Abstract

A liquid delivery system for supplying treated liquid at a delivery point comprising: a liquid treatment system having a liquid treatment vessel for treating a liquid for delivery to a delivery port in a treated condition; a first pressure vessel selectably fluidly connected to the liquid treatment system; at least one second pressure vessel at or near the delivery port and selectably fluidly connected to the liquid treatment system; a first piping for circulating liquid to be treated between the first pressure vessel fluidly and the connected liquid treatment system; a second piping for circulating treated liquid between the liquid treatment system and the connected second pressure vessel; and at least one flow controller for selectively controlling the flow through the first piping and the second piping.

Description

WO2022/246516 PC¶U/AIJ2022/050511
1 LIQUIDDELIVERYSYSTEM
FieldoftheInvention
[001]Thepresentinventionrelatestoaliquiddeliverysystemandinparticulartohotwater deliverysystem.
[002]Theinventionhasbeendevelopedprimarilyforuseindomestichotwaterdelivery systemandwillbedescribedhereinafterwithreferencetothisapplication.Howeverit willbeappreciatedthattheinventionisnotlimitedtothisparticularfieldofuseandcan beusedinvariousothercapacitiesforsupplyingtreatedliquids/gasesofallkinds.
BackgroundoftheInvention
[003]AsshowninFig.1existing hotwatersystemstypicallyhaveawaterheatertank 15whichissuppliedwithcoldwaterthatisheatedtoprovideacontinuousvolumeofhot waterinthetank.Pipesleadfromthehotwatertank15tooutletfaucets17alonglong leadlines30.Waterinthepipingcoolsovertimewhilethetankholdsthehotwater. Whenafaucet17isopenedtheentirevolumeofcoldwaterintheleadlinesbetweenthe heatertank15andthefaucet17needstobeemptiedbeforethehotwaterfromthetank 15finallyarrivesatthefaucet17.Thereforeasubstantialwasteofwateroccurseach andeverytimehotwaterisrequired.
[004]Hotwaterdeliverysystemscanbeconstructedtobetypesthataimtoconserve waterandenergy.Therearefourmaintypesofsystems: a) hotwaterrecirculationsystem b) crossoversystem c) watersavesystem d) traceheatingsystem
[005]ThehotwaterrecirculationsystemsuchasshowninFig.2comprisesarecirculation pipeextendingfromafurthestconnectionbacktothehotwaterheater.Apumpisrequired toeffecttherecirculationflow.
[006]Themainrequirementofthissystemisthatasecondpipeneedsinstallingto connectthewaterheatertothefurthestpointinthesystemandincludeapumptoenable thereturnofwaterbacktothewaterheaterforreheatingwhichthenkeepsthewaterup totemperature.Thepipescanhaveavolumeof5ormorelitresofwaterinthem.Asall
WO2022/246516 PC¶U/AIJ2022/050511
2 thewaterinthepipesneedstocirculateandrecirculatecontinuallywheninuseornot, thereistheexpenditureofenergybythepumpandexcessenergybythewaterheater. Whenatapisinusetherecanbesubstantialamountofcoldnotrecirculatedheated waterthatisdispensedandwasteduntiltherecirculatedheatedwaterfinallyreachesthe requirefaucet.Thereforemultiplesofthe5ormorelitresofwatercanbewastedas expelledcoldwaterbeforerequiredheatedwaterisexpelledatthefaucet.
[007]Thereforethissystemhasthefaultsof: a) Pumprunscontinuouslyduringsetperiodofuse. b) Onlyrecirculateshotwatertothatfurthestpointleavingcolddeadlegstoall otherpoints. c) Withaddedlengthofpipeworktheheatlossfromthepipeworkisnowdouble, evenwithinsulationonpipework.Thewaterheaterhastomakeuptheloss withadditionalinputofenergy. d) Costlytoinstallandnotpracticalonexistinginstallations. e) Allhotwaterpipeworkhastobeinsulatedtoreduceenergyloss.
[OO8]ThecrossoversystemsuchasshowninFig3comprisesareturnpipethatalso extendsbetweenthefurthestpointandthewaterheater. Italsoincludesapumpto recirculatebacktowaterheater.Howeverthissystemhasthedifferencethatitissimilar toahotwaterrecirculationsystembutdoesnothaveanyreturnpipeworkinstalled. Insteadthereisacrossovervalveandpumpinstalledatthefurthestpointtoallowthe hotwatertoreturntothewaterheaterviathecoldwaterpipework.
[009]Howeverthesystemhasthefaultsof: a) Sameasthefullcirculationpipeworkinstallationplus:partofthecold-water systemcanriseto37CCtemperature. b) Hotwaterisnowbeingmixedwithcoldwaterbeforeitreturnstothewater heaterwhichresultsinwarmwaterinthedrawofftotoilets.Thiswatercould alsoendupasdrinkingwaterattaps/faucets.Coldwatertap/faucetonthe kitchensinkneedstobeleftrunningtogetcoldwater.
c) Hotwatershouldnotbeusedforcookingordrinkingforthefollowingreasons: i) Heatedwatermaycausetheplumbingsystemtoreleaseleadnickel, etc.
WO2022/246516 PC¶U/AIJ2022/050511
3 ii) Goldwaterisfresherashotwaterstaysinthesystemforlongerperiods, andlongerstagnationmaycausehigherbacteriallevels. iii) Hotwaterisexposedtomorepollutionsourcesfromtanksandheating system. iv) Levelofmicro-organismsishigherinhotwaterplumbingandalso corrosionratesincopperbrassstainlesssteelandgalvanisedpipesis higher.
[OO1OJ Thewatersavesystemcomprisestheinitialflowofcoldwaterbeingsaved fromthesystemforre-useintoiletsorrainwateruse.Howeverthissystemhasthefaults ofneedingtopipethecollectedwatersomewhere:storagetankspressurevessels.It turnsfreshdrinkingwaterintogreywater/rainwateranditstilltakestoolongtocomeup totemperature.Alsoithasallofthesamefaultsasthecrossoversystem.
[0011J Thetraceheatingsystemneedstobefittedwithelectricalheatingtracetape toallthepipeworkonthehotwatersystem.Thereforetraceheatingtakestheformofan electricalheatingelementruninphysicalcontactalongthelengthofapipe.Howeverthis systemhasthefaultsofbeingexpensivetoinstallandexpensivetorun.Alongperiodof timeisneededtoheatthewaterinthepipework.Itneedstobeon24hrsperdaytobe effective.
[0012J Itcanbeseenthatknownpriorartliquiddeliverysystemshavetheproblems of: a) Wastageofwater b) Inefficienttreatingofliquid c) Wastedenergyintreatingvolumeofpipingsortreatingatalltime d) Onlyprovidingbenefitsalongoneline e) Requiringexcessiveextrapipingheatingtapeormodificationstoplumbing f) Notreadilyretrofittted
[0013J ThepresentinventionseekstoprovideaLiquidDeliverySystemwhichwill overcomeorsubstantiallyameliorateatleastoneormoreofthedeficienciesoftheprior artortoatleastprovideanalternative.
[0014J Itistobeunderstoodthat, ifanypriorartinformationisreferredtohereinsuch referencedoesnotconstituteanadmissionthattheinformationformspartofthecommon generalknowledgeintheartinAustraliaoranyothercountry.
WO2022/246516 PC¶U/AIJ2022/050511
4 SummaryoftheInvention
[0015J Accordingtoafirstaspectofthepresentinventionthereisprovidedaliquid deliverysystemforsupplyingtreatedliquidatadeliverypointcomprisingaliquid treatmentsystemhavingaliquidtreatmentvesselfortreatingaliquidfordeliverytoa deliveryportinatreatedcondition;afirstpressurevesselselectablyfluidlyconnectedto theliquidtreatment system atleastonesecondpressurevesselatornearthedelivery ,
portandselectablyfluidlyconnectedtotheliquidtreatmentsystem.Thesystemfurther hasafirstpipingforcirculatingliquidtobetreatedbetweenthefirstpressurevesselfluidly andtheconnectedliquidtreatmentsystem;andasecondpipingforcirculatingtreated liquidbetweentheliquidtreatmentsystemandtheconnectedsecondpressurevessel. Atleastoneflowcontrollerforselectivelycontrollingtheflowthroughthefirstpipingand thesecondpiping.
[0016J Itcanbeseenthattheinventionofaliquiddeliverysystemprovidesthebenefit ofprovidingameansofsavingenergyandwaterwhilestillsupplyingtreatedmaterial suchashotwaterfasterthanbefore.
[0017J Accordingtoasecondaspectofthepresentinventioneffectingselective operationalstepsof: a.Atreatmentstepofcirculatingliquidtobetreatedthroughthefirstpipingin afirstcircuittoenabletreatmentofliquidintheliquidtreatmentvesselof theliquidtreatmentsystemor b.Adistributionstepofcirculatingliquidthathasbeentreatedthroughthe secondpipinginasecondcircuittothesecondpressurevesseltoreplace untreatedliquidinthesecondpipingwithtreatedorpartiallytreatedliquid; or c.Adiversionstepofreturningatleastsomeuntreatedliquidandtreatedliquid fromthedistributionstepinathirdcircuitfromthesecondpressurevessel tothefirstpressurevesseltoenablesubsequentandprogressivetreatment oftheliquidreceivedbythefirstpressurevesseLor d.Astandbymodewheretheliquiddeliverysystemhasfilledwithtreated liquidandwherebythefirstpressurevesselisfilledwithastoreoftreated liquidandthereisnoflowofliquidor
WO2022/246516 PC¶U/AIJ2022/050511
5 e.Afurtherdistributionstepofcirculatingliquidthathasbeentreatedand storedinthefirstpressurevesselthroughthefirstandsecondpipinginthe secondcircuittothesecondpressurevessel.
[0018J Theoperationalstepscanfurtherincludeaprimingstepwheretheliquid deliverysystemisfilledwithliquid.Inthisstepthesecondpressurevesselhasaset pressuresubstantiallyequaltoincomingliquidpressureandthefirstpressurevesselhas asetairpressureatleast50%lowerthanthesetpressureinthesecondpressurevessel. Intheprimingstepthecontrolvalveisonandthepumpisoffandwhereliquidfroman inletsourcefillsthedeliverysystemuntiltheairpressureinthefirstandsecondpressure vesselaresubstantiallyequal.Whenthedeliverysystemisfilledthereisnoflowofliquid inthedeliverysystemandthesystemiseffectivelyinastandbystaticmode.
[0019J Inarelatedaspectoftheinventionthereisdescribedadeliverysystem includesafirstpipingforcirculatingliquidtobetreatedbetweenthefirstpressurevessel andtheconnectedliquidtreatment secondpipingforcirculatingtreatedliquid ,
betweentheliquidtreatmentsystemandtheconnectedsecondpressure nda,
thirdpipinginterconnectingthefirstandsecondpipingwhereinthethirdpipingincludes anintermediatevalvemeans;apumpoperableinoneormoremodesof nd,
operatiorva aflowcontrollerforcontrollingtheintermediatevalvemeansandpump;whereina pluralityofselectpipingcircuitsareprovidedbythefluidnetworkfordeliveryoftreated waterinoneofmultiplemodesofoperationbetweenthefirstandsecondpressurevessel tomaintaintreatedliquidinastateforimmediateuseatanoutlet.
[0020J Theinternalpressureofthesecondpressurevesselwhenemptycanbe greaterthantheinternalpressureofthefirstpressurevesselwhenempty.
[0021J Theinternalpressureofthesecondpressurevesselwhenemptycan bedoubletheinternalpressureofthefirstpressurevesselwhenempty.
[0022J Thediversionsteppreferablyincludesreturningliquidfromthe secondpressurevesseltothefirstpressurevesselusingtheinternalpressure differentialbetweenthefirstandsecondpressurevessels.
[0023J Inafurtherrelatedaspectthereisprovidedaliquiddeliverysystemfor supplyingtreatedliquidatadeliverypointcomprising: a)Aliquidtreatmentsystemhavingaliquidtreatmentvesselfortreatingaliquidfor deliverytoadeliveryportinatreatedconditiorn
WO2022/246516 PC¶U/AIJ2022/050511
6 b)Afirstpressurevesselfluidlyconnectedtotheliquidtreatmentsystembyafirst piping; c)Atleastonesecondpressurevesselfluidlyconnectedtotheliquidtreatment systembyasecondpipingthesecondpipingcomprisingoneormoredelivery portsfordeliveringtreatedliquid; d)Athirdpipingselectivelyfluidlyconnectingthefirstpressurevesselandthesecond pressurevessel e)Atleastoneflowcontrollerforselectivelycontrollingtheflowthroughthefirst pipingthesecondpipingandthethirdpiping.
[0024J Theinternalpressureofthesecondpressurevesselwhenemptymaybe greaterthantheinternalpressureofthefirstpressurevesselwhenempty.the internalpressureofthesecondpressurevesselwhenemptymaybedoublethe internalpressureofthefirstpressurevesselwhenempty.
[0025J Theflowcontrollermaybeconfiguredtocausetreatedliquidtoflowfromthe secondpressurevesseltothefirstpressurevesselthroughthethirdpipingusingthe internalpressuredifferentialbetweenthefirstandsecondpressurevessels.
[0026J Itcanbeseenthattheinventionofaliquiddeliverysystemprovidesthebenefit ofprovidingapressure-controlledsystemthatreadilyusesmodifiedstepsofflowtoeffect therequiredresult.
[0027J Thereforeitcanbeseenthatinoneormoreformstheinventionachievesone ormoreadvantagesof: a)Instanthotwatertoselectedtap/faucetpositionswithnowatertorunofftoobtain hotwater. b)Nocontaminationofcold-waterpipeworkandnorecirculationneeded. c)Canbefitteddirectlyattap/faucetconnectionundersinkunitsbathroomunitsand toneworexistingsystems. d)Nopipeworkalterationsareneededinbuildings.Itonlyneedsateefittingto existingtap/faucetconnectionforsmallpressurevessel. e)Onlyasmallalterationofpipeworkrequiredatthehotwaterheatingunit. f) Oneormoresmallerpressurevesselscanbefittedatmosttap/faucetpositions. g)Canbecontrolledbytimeclocksorremotepush-buttontoswitchonpumpand controller.
WO2022/246516 PC¶U/AIJ2022/050511
7 h)Nostagnationofwaterinvesselswhichwouldvastlyreducetheriskofbacteria growth. i) Canbefittedtoanytypeofsealedhotwatersystemintheworldmakingallother systemsobsolete.
[0028J Otheraspectsoftheinventionarealsodisclosed.
BriefDescriptionoftheDrawings
[0029J Notwithstandinganyotherformswhichmayfallwithinthescopeofthepresent inventionpreferredembodimentsoftheinventionwillnowbedescribedbywayof exampleonlywithreferencetotheaccompanyingdrawingsinwhich: Fig.1isdiagrammaticviewofarecirculationhotwatersysteminaccordancewith thepriorart; Fig.2isdiagrammaticviewofarecirculationhotwatersysteminaccordancewith thepriorart, Fig.3isadiagrammaticviewofacrossoversysteminaccordancewiththepriorart; Fig.4isadiagrammaticviewoftheapparatusesofliquiddeliverysystemintheform ofahotwatersystemreadyforprimingorfillinginaccordancewithanembodiment oftheinventiorn Fig.5isadiagrammaticviewofthesysteminacirculationmodeofoperationina firstcircuitinaccordancewithanembodimentofthepresentinventiorn Fig.6isadiagrammaticviewofthesysteminafirstpulsemodeofoperationina secondcircuitinaccordancewithanembodimentofthepresentinvention, Fig.7isadiagrammaticviewofthesysteminareturningliquidmodeofoperation inathirdcircuitinaccordancewithanembodimentofthepresentinventiorn Fig.8isadiagrammaticviewoftheliquiddeliverysystemintheformofahotwater systeminastandbymode(i.e.noflow)withastoreoftreated/heatedfluid/waterin thefirstpressurevesselandpipinginaccordancewithanotherembodimentofthe inventionincludingsupportingpressurepumpstocontroldifferentialpressures betweenHtoP4; Fig.9isadiagrammaticillustrationofafurtherembodimentoftheliquiddelivery systemintheformofahotwatersysteminafillingorprimingmode Fig.10isadiagrammaticillustrationoftheliquiddeliverysysteminfigure9inthe formofahotwatersysteminastandbyoperatingmodewithsystemprimedwith untreated/coldfluid/waterbutnoliquidflowUi.e.stativ
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8 Fig.11isadiagrammaticillustrationoftheliquiddeliverysysteminfigure9inthe formofahotwatersysteminacirculatingoperatingmodethroughatreatment devicewithpumprunningandcontrolvalveopenheatingfluidincircuitCl* Fig.12isadiagrammaticillustrationoftheliquiddeliverysysteminfigure9inthe formofahotwatersysteminapulseoperatingmodewithpumprunningandcontrol valveshuttherebymovingcoldliquidfromthefirstpressurevesselthrougha treatmentdevicetothesecondpressurevesselandmovingtreatedfluidfromthe circulationstepfrompipingtothesecondpressurevesseL Fig.13isadiagrammaticillustrationoftheliquiddeliverysysteminfigure9inthe formofahotwatersysteminareturningoperatingmodewithcontrolvalveopen andpumpnotrunningtherebyreturningheatedliquidfromthesecondpressure vesseltothefirstpressurevesseL Fig.14isadiagrammaticillustrationoftheliquiddeliverysystemfollowingfigure13 withcontrolvalveonandpumprunningtocirculateanyremaininguntreatedliquid aboutcircuitClthroughtheliquidtreatmentvessel; Fig.15isadiagrammaticviewofthesysteminapulsemodeofoperationina secondcircuitshowingallliquidhasbeentreatedandflowoftreatedliquidwithin thedeliverysystemfromthefirstpressurevesseltothesecondpressurevesselin accordancewithanembodimentofthepresentinvention, Fig.16isadiagrammaticviewoftheliquiddeliverysystemintheformofahotwater systeminastandbymode(i.e.noflow)withatreated/heatedfluid/waterinthe secondpressurevesselreadyforuse, Fig.17isadiagrammaticflowdiagramofamethodofliquiddeliverysystemfor supplyingtreatedliquidatadeliverypoint; Fig.18isadiagrammaticviewofanexampleofasolarhotwatersystemmodified toformliquiddeliverysystemintheformofahotwatersysteminaccordancewith anembodimentoftheinventiorn Fig.19isanapparatusofliquiddeliverysystemintheformofahotwatersystemin accordancewithanotherembodimentoftheinventionincludingsupportingpressure pumpsandsolarheating; Fig.20isadiagrammaticviewofanexampleofasealedhotwatersystemwithout solarorstorageinstalled; Fig.21isadiagrammaticviewofpurpose-madepressurevesseltofitbackof sinks/bathroomstosuitallpipeworkwatervolumesindomesticinstallations;
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9 Fig.22isadiagrammaticviewofpressurevesselsatpulsepressuresystemfully chargedwithpressurevessel21partemptyandpressurevessel22partfulL Fig.23isadiagrammaticviewofapressurevesselatrest21, pressurevesselhas thewater/liquidreturnedtoitandthepressurevessel22,hasdischargedits contents.Systemnowatnormalworkingpressure Fig.24isadiagrammaticsystemforpressurepulsesystemusedonadryfire sprinklersystemtokeepcompressedair/nitrogentooptimalmoisturecontentlevels hasanembodimentofliquiddeliveryssysteminaccordancewiththeinventiorn Fig.25isadiagrammaticsystemforpressurepulsesystemusedforcompressed airlinestokeeptheairtooptimalmoisturecontentlevelswhereitiscriticalfor manufacturingprogresshasanembodimentofliquiddeliverssysteminaccordance withtheinventiorn Fig.26isadiagrammaticviewofthesystemofthepresentinventioninstalledona coldmainswatersupply; Fig.27isadiagrammaticviewofthesystemofthepresentinventioninstalledonan existinghotwatersystemfittedwithconventionalhatwatercirculatingpiping;and Fig.28isadiagrammaticviewofthesystemofthepresentinventioninstalledina reverseposition.
DescriptionofPreferredEmbodiments
[0030J Itshouldbenotedinthefollowingdescriptionthatlikeorthesamereference numeralsindifferentembodimentsdenotethesameorsimilarfeatures.
[0031J ReferringtothedrawingsandstartingwithFig4,thereisshownaliquid deliverysystemforuseintheoperationofapressurepulsehotwatersystemin accordancewithanembodimentoftheinvention.Theliquiddeliverysystemhasmultiple interconnectedwatercircuitsformingafluidnetworkbetweenspacedpressurevessels; aliquidtreatment , andacontrolsystemtocontroltheflowofwaterthroughthe watercircuitstosubstantiallyminimizewaterwastageandsubstantiallymaximiseenergy efficiencyatatapendwhenhotwateriscalledfor.
[0032J Thesystemoftheinventionprovidessubstantiallyinstantaccesstohotwater fromatapwithouthavingtoprolongcoldwateregressbeforeexperiencingwarmedand
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10 hotwater.Thisrepresentsanimprovementoverexistingwatertreatmentsystemsand benefitsfromverysignificantwatersavingsandenergycosts.
[0033J Onahotwaterdeliverysystemhavingaconnectedfluidnetworkinasealed waterheatingsystemthereisprovidedafirstpressurevessel21andasecondpressure vessel22atspacedpositionsandeachfluidlyconnectedwithaliquidtreatmentsystem 15shownintheembodimentsasawaterheater.Apluralityofdeliveryportssuchas taps/faucets17arelocatedalongthefluidnetworkproximalthesecondpressurevessel.
[0034J Thefluidnetworkofthedeliverysystemincludesafirstpiping32forcirculating liquidtobetreatedbetweenthefirstpressurevessel21andtheconnectedliquid treatmentsystem15;asecondpiping33forcirculatingtreatedliquidbetweentheliquid treatmentsystem15andtheconnectedsecondpressurevessel 22a ,ndathirdpiping34 interconnectingthefirstandsecondpipingwhereinthethirdpipingincludesan intermediatevalvemeans41, apumpoperableinoneormoremodesof nd ,
aflowcontroller40forcontrollingtheintermediatevalvemeansand wherein .
pluralityofpipingcircuitsareprovidedbythefluidnetworkfordeliveryoftreatedwaterin oneofmultiplemodesofoperationbetweenthefirstandsecondpressurevessel.
[0035J Figures4to8showdifferentmodesofoperationofthedeliverysystem.Ina firstmode(Ml)ofoperation(seeFigure4),thedeliverysystemisinaprimingorfilling modeinwhichthefluidnetworkisreadytoreceiveaninflowvolumeofwaterfrominlet 16throughinletpiping31. Herethesecondpressurevessel22isinitiallysetbya diaphragmhavinganairpressureRicorrespondingtoinletwaterpressureandthefirst pressurevessel21issetbyadiaphragmatanairpressureP2whichisatleast50%lower thantheairpressuresetinsecondpressurevessel22.Thesizeandpreselectedset pressuredifferentialofthefirstandsecondpressurevesselsdeterminesthevolumeof watermovablebackandforthinthefluidnetworkbetweenthefirstandsecondpressure vessels.
[0036J IntheprimingmodeMlofoperationthecontrolvalve41isopenandthepump isnotrunning.Wheninlet16isopencoldwaterflowsfromadomesticsourceindirection Athroughanon-returnvalve161intoinletpiping31andintopiping32,33and34.Asthe setairpressureP2inthefirstpressurevesselislessthanthesetairpressureR,,cold waterenteringthefluidnetworkisurgedintothefirstpressurevessel21andtheliquid
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11 deliverysystemisfilled(primed)withcoldwater.Aswaterfillsthefirstpressurevessel 21airpressureP2increasesandprimingmodeMlisreachedwhenRiandP2have equilibrated.Atthispointthesystemisinastandbymodewithastoreofcoldwaterin thefirstpressurevessel21andwherethereisnoflowwithinthefluidnetwork.
[0037J TurningtoFigure5,thereisshownthesysteminacirculationoperatingmode M2,wherethecontrolvalve41isopenandpump46switchedonbycontroller40,toallow flowofwaterinafirstwaterflowcircuitCiwithinthefluidnetworkcirculatingwaterthrough theliquidtreatmentsystem15totreatbyheatinganinitialvolumeofwaterinCi.Inone embodimenttheliquidtreatmentsystem15isaheaterwhichisautomaticallystartedby waterflowtherethroughhenceflowofwaterinCiinitiatesoperationoftheheater15.
[0038J Referringtofigure6,thereisshownafirstpulsedoperatingmodeM3.Ata predeterminedtimeortemperatureorpressureinmodeM3controlvalve41isclosed U
anduntreatedorcoldliquidstoredinthefirstpressurevessel21isdrawnbypump46 andpushedtothesecondpressurevessel22throughtheliquidtreatmentsystem15 followingasecondfluidcircuit02betweenthefirstandsecondpressurevessels.Treated (heated)liquid/waterinthefirstcircuitCifrommodeM2ispushedintothesecond pressurevessel22alongpiping33andasfurtherliquidisdrawnfromthefirstpressure vessel21andpushedalongpiping32and33andthroughtheheater15,thetemperature ofthevolumeofliquidincircuit02israisedandwithcontinuedflowofliquidincircuit02 aprogressivelyincreasingvolumeofheatedliquidisreceivedbythesecondpressure vessel22.Asthevolumeofheated/treatedfluidincreasesinthesecondpressurevessel 22,theairpressureinthesecondpressurevesselprogressivelyincreasesandtheair pressureinthefirstpressurevessel21progressivelydecreases.
[0039J Asshowninfigure7,atapredeterminedtimeorpressureortemperature, controller40stopsthepump46fromrunningandopenscontrolvalve41inmodeM4to formathirdcircuit03forreturningtreated/heatedliquidfromthesecondpressurevessel 22tothefirstpressurevessel21toprovideastoreoftreated/heatedfluidinthefirst pressurevessel21. Astreatedliquidfromthesecondpressurevessel22returnstothe firstpressurevessel21, theairpressureinthesecondpressurevesseldecreasesandat thesametimeincreasesinthefirstpressurevessel.
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[0040J Figure8showsastandbymodeMSwherecontrolvalve41andpump46are closedandturnedoffandthefirstpressurevesselfilledwithtreatedliquidandtheair pressureinthefirstandsecondpressurevesselequilibrated.Figure8therefore representsasecondstandbymodeM5wherefurthertimedpulsingcanoccur subsequentlyatpredeterminedtimestopushtreated/heatedliquidbetweenthefirst pressurevesselandthesecondpressurevessel.Asalsoshowninfigures4to8,there canbemultipletaps117andmultiplesecondpressurevesselsforeachtap.Inthiscase, eachtaphasimmediateaccesstotreatedliquidfromthesecondpressurevessel.This representsasignificantimprovementoverpriorartsystemswithlesswaterwastagefor examplewhenhotwaterisdesiredandenergysavings.Thewaterheater15canbegas orelectricwaterheateroroilorsolidfuelorcanbesupplementedorreplacedbyasolar waterheaterfluidlyconnectedintothesealedwaterheatingsystem.
[0041J Theliquiddeliverysystemhasatleastoneflowcontroller40whichselectively controlstheflowofliquidthroughthefirstpipingandthesecondpipingbyeffecting selectiveoperationalstepsof: 0 Asystemsetupstep 0 Aprimingstep 0 Atreatmentstep 0 Adistributionstep 0 Adiversionstep
[0042J Thesystemhas a) afirstpiping32whichextendsfromthefirstpressurevessel21tothe waterheater15andreceivingconnectionfromtheinfeedpiping31connected toasupply16ofcoldwater.Thefirstpipingallowsforcirculatingliquidtobe treatedbetweenthefirstpressurevesselfluidlyandtheconnectedliquid treatmentsystemofthehotwaterheater15; b) asecondpiping33extendsfromtheconnectedliquidtreatmentsystem ofthehotwaterheater15tooutlets17alongforcirculatingtreatedliquid betweentheliquidtreatmentsystemandtheconnectedsecondpressure vessel22 c) athirdpiping34extendingbetweenpiping32and34andincludinga controlvalve41forcontrollingflowofliquidincircuitsCi,02and03.
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[0043J Toenabletherequiredflowstheatleastoneflowcontroller40includes: a) aflowswitchbeingasolenoid41forselectivelycontrollingtheflow throughthefirstpiping32andthesecondpiping33 b) atimerorremotecontrolforprovidingtimedchanges(notshown) c) apressurecontrolofcreatingdifferentialpressurebetweenthepressure infirstpressurevessel21andsecondpressurevessel22.
[0044J Example1 Diversion
[0045J Thefirstandsecondpressurevesselsoperateatdifferentpressuresandthe sizeandsystempressurecanbeadjusted.
[0046J Forexampleinoneformthesystemissetupwith a)Goldwaterinletwithpressurereducingvalvesetfor40PSI. b)FirstpressurevesseldiaphragmP1pressuresetfor20PSI. c)SecondpressurevesseldiaphragmP2setfor40PSI.
[0047J AsshowninFig8,thepressuredifferentialcanbeaugmentedsupplemented orreplacedbypumps46inthefirstorsecondpipings32,33.Thesepressuredifferentials canbeeffected.ThereforethereisdifferentialpressureRiinfirstpressurevessel21, to thepressureP2intheremotesecondpressurevessel22nearthetapoutlets17andin comparisontothepressureP3inthewaterheater15thatcanbeaugmentedbythe pressureP4ofthepump46.
[0048J Treatment Step
[0049J ReferringtoFig5,inthetreatmentstepmodeM2,thereisaffectedcirculation ofliquidtobetreatedinacircuitCithroughthefirstpiping32toenabletreatmentinthe waterheater15oftheliquidtreatmentvesseloftheliquidtreatmentsystem.Therefore, thesolenoid41isopeninthepiping34andthepump46isrunningwhichallows circulationofwaterbacktothewaterheater15untilwaterisfullyheatedinpiping32in circuitCi.
[0050J Thefollowingis'Aftersystemisfilledwithwater.Withsystematrest(standby mode),asnohotwaterisindemandandnoflowwithinthepipingnetworkadiaphragm infirstpressurevessel21withthelowerpressuresettingisnowcompressedto40PSI andispartfullofwater.Thesecondpressurevessel22hasnowaterinitduetothe highersetpressure.
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[0051J Upondemandforhotwatereitherbythetime-switchorremotecontrolthe pump46fittedwithapressureswitchandnon-returnvalveturnson.Thiscirculatesthe waterincircuitCithroughthewaterheater15andbacktothepumpviathesolenoid valve41thatisinanopenpositionwateristhenheatedtoacontrolsettemperatureTi.
[0052J Step 1 Pressure (psi) status temperature Firstpressure P1=20 Noflow HeatingtoTl vessel 21 Upto4O __________________________ Secondpressure P2=40 Noflow vessel22 Heater 15 P3<40 circulating HeatingtoTl Pump46 P4 upto40 Up to 40 ______________ Solenoid valve 41_________________ open _________________
Pipes3l ______________No flow cold Pipes 32 Upto4O Flowing Heating to Ti Pipes 33 P2=40 No flow __________________
Outlets 17 P2=40 No flow __________________
[0053J Distribution Step
[0054J ReferringtoFig.6,thereisshownadistributionstepoperatingmodeM3,with solenoidvalveshutandpumprunningwhereliquidisdistributedinapulsedeffectina circuitdescribedby02thathasbeentreatedthroughthesecondpiping33tothesecond pressurevessel22toreplaceuntreated/coldliquidinthesecondpipingwithtreatedor partiallytreatedliquid.
[0055J Afterapproximately30secondsofthecirculationortreatmentmodeM2(figure 5),thecontroltimer40shutsthesolenoidvalve41andthepump46beginstorunin modeM3.
[0056J Asshowninfigure6,thePump46nowdrawswaterfromthefirstpressure vessel21andpumpsthewaterpressureupto60PSI.(Pump46stopswhenaset pressureisreached.)Theadditionalwatercanonlyflowintothesystemviathehotwater heaterandthenontopartfillthesecondpressurevessel22.Astheflowfromthewater heater15isnowuptotemperaturethereisnowaninstantflowofhotwatertothe tap/faucet17locatedclosetothepressurevessel22position.
[0057J Theadditionalhotwaterflowpushesthecoldwateroutofthepipework33and intothesecondpressurevessel22Thehotandcoldwaterinpressurevessel22 separatesduetothedifferentdensitywiththecoldwateratthebottom.
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15
[0058J Step 2 Pressure (psi) status temperature Firstpressure P1dropsto20 vessel21 Secondpressure Increases60 Fillingwithcold PartwarmIpart vessel 22 from pipes 32 cold stratified ______________________
Heater 15 Increases to 60 circulating HeatingtoTl Pump46 P4upto6O pumping ______________ Solenoid valve 41________________closed ________________ Indeed Pipes 31 No flow FirstPiping32 Feedingtoheater U U U U
_________________ 15 _________________ _________________
Secondpiping33 P2=60 Flowingto Secondpressure vessel22 Outlets17 P2=60 Noflowbut readywith ________________________________immediateTi ________________
[0059J Diversion (return) Step
[0060J ReferringtoFig.7,inthediversionstepinmodeM4thereisaffectedathird circuit03enablingareturnofatleastsomeuntreatedliquidfromthesecondpiping33 andfromthesecondpressurevessel22tothefirstpressurevessel21viapiping34with thepump46notrunning.
[0061J Followingatimedtwo-minuteperiodinmodeM3(figure6),solenoidvalve41 returnstoanopenconditioninmodeM4affectingthereturntothefirstpressurevessel 21asabove.
[0062J Inthereturnordiversionstepwaterinsecondpressurevessel22beingcold waterfirst(i.e.coldwateratthelowerendthereof)ispushedbackintosecondpiping33 andthirdpiping34bytheextrapressurecomparedtothefirstpressurevessel21, which isnowatlowerpressure.
[0063J Thesystemcomestorestat40PSIwhenthesecondpressurevessel22is emptyandfirstpressurevessel21ispartfull.Thisisreferredtoasastandbymodein whichthereisnoflowofliquidinthepipingnetworkandinwhichthereisastoreoftreated liquidinthefirstpressurevessel. InstandbymodeMSthetreatedliquidinthefirst pressurevessel21isreadyforfurthertreatmentinthewaterheater15oftheliquid treatmentvesseloftheliquidtreatmentsystemincircuitCiand02.
[0064J
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16 Step 3 Pressure (psi) status temperature
Firstpressure P1=40 vessel21 Secondpressure P2=40 vessel22 Heater 15 P9<40 __________________
Pump46 PlO up to 40 ______________ Solenoidvalve41 open Pipes3l ______________no flow ______________ Pipes 32 __________________No Flow __________________ Pipes 33 __________________No flow __________________ Outlets 17 P2=40 No flow __________________
[0065J Afterashortperiodoftimeinastandbymodesuchasapproximatelytwenty minutesthetreatmentcyclerepeatsuntilthecontrollerturnsoffsothatthewater temperatureissubstantiallymaintainedincircuitCiandreadyfortransferinapulsed operatingmodeforuseinthesecondpressurevessel22.
[0066J Fig8showstheuseofaone-waypump46toprovidefurtherpressureP4to drivetheliquidfromthefirsttank21atpressureP1totheheatingtank15atpressureP3. ThisenhancesthedifferentialpressuresP1P2P3andP4toeffecttherequiredflows.
[0067J Figs.9to16illustrateafurtherexampleofaliquiddeliverysystemin accordancewithsomeembodimentsoftheinvention.Theliquiddeliverysysteminthe formofahotwatersystem100comprisesaliquidtreatmentsystemhavingaheatertank 115forheatingwaterwithinthesystem100introducedfromacoldwatersupply116.A firstpressurevessel121isselectablyfluidlyconnectedtotheliquidtreatmentsystem, andasecondpressurevessel122nearadeliveryport(notshown)isselectablyfluidly connectedtotheliquidtreatmentsystem.Figure9showsanemptysystemwaitingtobe primedandwhereintheairpressureRiinthesecondpressurevesselissetataboutthe samepressureattheinlet116andtheairpressureP2ofthefirstpressurevesselisset atleast50%lowerthanP,.Thesystemfurthercomprisesaflowcontroller140for selectivelycontrollingflowbetweenthefirstandsecondpressurevessels121, 122and theheatertank115.
[0068J ReferringtoFig.9showingthesetupsteppriortofillingthehotwatersystem 100withcoldwatersupply116,thesystemisemptyofwater.Airpressuresinthefirst andsecondpressurevessels121, 122arepresettoinitiallevelswherethefirstpressure vesselispresettoapproximatelyhalfoftheinletwaterpressureofthecoldwatersupply
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17 116. Thesecondpressurevesselispresettobeapproximatelysimilartothewater pressureofthecoldwatersupply116.
[0069J AsshowninFig.10oncethepressuresofthepressurevesselshavebeenset, thesystem100isconnectedtoacoldwatersupply116fillingthesystem100withcold water. Thefirstpressurevessel121fillswithcoldwatertoequalizethepresetair pressurewiththewaterpressureofthecoldwatersupply116.Howeverbecausethe presetairpressureofthesecondpressurevessel122issimilartothepressureofthe watersupplythesecondpressurevessel122doesnotfillwithwaterremaining substantiallyempty.Thismodeofoperationmaybereferredtoasthesystemfillingor primingstep.Intheprimingstepcontrolvalve141isopenandpump146isnotoperating.
[0070J Oncetheliquiddeliverysystemisfilledwithcold(untreated)waterW~air pressureinthefirstandsecondpressurevesselsequalizeandavolumeofuntreated waterW~sitsinthesysteminastandbyorstaticflowmode.
[0071J Theprimingstepdoesnotrequireoperationofthepumpaswaterflowswithin thesystem100bypressuredifferentialbetweenthefirstandsecondpressurevessels, andatthisstagethecontrolvalve141, whichcanbeasolenoidvalveUIsopen.The system100isfilledwithasupplyofcoldwateroncetheairpressureinthefirstpressure vesselreachesthewaterpressureofthecoldwatersupply116.Asseenthevolumeof coldwaterinthefirstpressurevesselisincreasedstoringapredeterminedvolumewith correspondingincreaseinairpressure.Atthesametimebecausetheairpressureinthe secondpressurevesselissetatinletwaterpressurethesecondpressuredoesnotfill andavolumeofcoldwaterisreceivedbythedeliverysystemdependentonthesizeof thecircuitandpressurevesselsandsetpressuredifferentials.Thesizeofthecircuitand pressurevesselsandsetpressuredifferentialsdeterminesthevolumeofwaterthatcan bemovedbackandforth.
[0072J Oncethesystemhasbeenfilledor'primed'(figure10),thewaterdelivery systemisinastandbymodereadyforthewatertreatmentcirculationsteptostart(fig. 11).Fortheembodimentshowninfigure11thepump146isrunningandthesolenoid valveisopen.Aswaterstartstoflowinafirstcircuitwatertreatmentcomprisesinitially heatingthewaterreceivedintheheatingtank115duringtheprimingstepandcirculating waterinafirstcircuitCialongpiping131and132.Additionalwatercanthereforebe heatedtoaninitialtemperatureWtibycirculatingthewateralongpiping132throughthe
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18 opensolenoidvalve141andpumpingwaterthroughtheheatingtank115usingpump 146.Thisoperationmaybereferredtoasthecirculationstep.
[0073J Oncethewaterbeingcirculatedinthecirculationstepreachesthe predeterminedtreatmenttemperatureWv,,thecontrolvalveinthiscaseasolenoidvalve 141isclosedinathirdmodeofoperationandwaterstoredinthefirstpressurevesselis pumpedfromthefirstpressurevessel121tothesecondpressurevesselthrougha secondcircuit02viatheheatertank115asshownforexampleinFigure12.
[0074J Inthisstep(referfigure12),coldoruntreatedwaterstoredinthefirstpressure vesselisdrawnfromthefirstpressurevessel121anddisplacesthetreatedwaterinthe heatertank115andusingincreasedpressurefromthepump146treatedwaterispushed alongthepiping132and133intothesecondpressurevessel122atatemperatureWt2. Importantlyfaucets(notshown)arrangedalongthepipelinebetweentheheatingtank 115andthesecondpressurevessel112nowprovidetreatedwaterWt2whenopened. Thiscanbereferredtoasthewarmwaterstoragestage.
[0075J Whenthesecondpressurevesselisfilledwithhotwaterorifthewater temperatureinthesecondpressurevesselbeginstodropthesolenoidvalvecanbe openedandthepumpcanbeswitchedoff.AsaresultasshowninFig13treatedwater inthesecondpressurevessel122willbegintoflowbackintothefirstpressurevessel throughafurthercircuitduetothepressuredifferentialexistingbetweenthesecondand firstpressurevessels.
[0076J Inthisembodimenthotwaterisreturnedfromthesecondpressurevesselto thefirstpressurevesselbyincreasedairpressureinthesecondpressurevesselto stabilizethedeliverysystem.Thefirstpressurevesselprogressivelyfillswithavolumeof hot(treated)wateruntiltheairpressureinbothpressurevesselsinsubstantiallythe same.Treatedwatercanbeselectivelymovedwithinthecirculationcircuitbyopening thecontrolsolenoidvalveandoperatingthepumpinessenceforprimingthetreated waterwithinpiping132forfurthermovementfromthefirstpressurevesseltothesecond pressurevessel.
[0077J Infigure13,therecanstillbeseensomeresidualuntreated(cold)waterW~in thefirstpiping.Followingthestepinfigure13,thedeliverysystemisplacedintoafurther circulationstepusingcircuitCiwithopenvalveandheatingtotreatwaterinCiand bringingthewatertoatemperatureWt2.
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[0078J Referringtofigure15,thesystemisshowninapulsemodeofoperationinthe secondcircuit02showingallliquidhasbeentreatedtoWt2andthetreatedliquidwithin thedeliverysystem100ispushedbythepumpfromthefirstpressurevessel121tothe secondpressurevessel122throughtheheater115withsolenoidvalveinaclosed position.
[0079J Infigure16,thesystemisbacktostandbymodewherethepumpisnot runningandthesolenoidvalveisopen.Inthisconditionthefirstvesselispartfulland thesecondpressurevesselisempty.
[OO8OJ Advantageouslybyswitchingbetweentherecirculatingstoringandreturning operationalstageswatercanbecirculatedthoughthepipingandparticularlythroughthe heatertank115toensurethatthewatermaintainstherequiredtreatedtemperature ensuringthatuntreatedwaterisnotwastedwhenopeningafaucet.
[0081J Fig17isanexampleofthemethodofliquiddeliverysystemforsupplying treatedliquidatadeliverypointinwhichinafirststepofprovidingaflowswitchbeinga solenoidforselectivelycontrollingtheflowthroughthefirstpipingandthesecondpiping, atimerorremotecontrolforprovidingtimedchangesandapressurecontrolofcreating differentialpressurebetweenthepressureinfirstpressurevesselandsecondpressure vessel.
[0082J Inasecondstepthereisthestepofcontrollingflowthroughafirstpipingfor circulatingliquidtobetreatedbetweenthefirstpressurevesselfluidlyandtheconnected liquidtreatmentsystemorasecondpipingforcirculatingtreatedliquidbetweentheliquid treatmentsystemandtheconnectedsecondpressurevessel
[0083J Thefurtherstepincludesatreatmentstepofcirculatingliquidtobetreated throughthefirstpipingtoenabletreatmentintheliquidtreatmentvesseloftheliquid treatmentsystem.
[0084J Astillfurtherstephasadistributionstepofcirculatingliquidthathasbeen treatedthroughthesecondpipingtothesecondpressurevesseltoreplaceuntreated liquidinthesecondpipingwithtreatedorpartiallytreatedliquid.
[0085J Anotherstephasadiversionstepofreturningatleastsomeuntreatedliquid fromthesecondpipingtothefirstpressurevesseltoenabletreatmentintheliquid treatmentvesseloftheliquidtreatment,
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[0086J Thesestepsareundertakenagainbackfromthesecondstepiffurther treatmentandsupplyisrequireduntiltherequiredsupplyismet.
[0087J ReferringtoFig16thereisshownanexampleoftheoverallhotwatersystem modifiedtoformliquiddeliverysystemintheformofahotwatersysteminaccordance withanembodimentoftheinvention
[0088J AparticularembodimentisshowninFig18thatincludessolarheatingfrom solarpanels49thatfeedscoldwaterfromthecold-watersupplytothepanels49and afterheatingtransfertheheatedwatertothetopofhotwaterheater15.
[0089J ReferringtoFig.18,shouldtherebealossofwaterinthesystemanditcould notbepressurisedthepressureswitch11wouldstoppump46andreturnssolenoid valve41backtoopen.Shouldhotwaterbedrawnoffasthepressurepulsemodeis takingplaceflowswitch12woulddetectusageandreturnsthepressurepulsesystem forest.
[0090J Thediaphragmpressureinpressurevessel21forceswaterintothesuction inletofpump46wheninpressurepulsemode.
[0091J Onfirststart-uptheunitwouldbeprogrammedtopulseseveraltimesforfast deliveryofhotwatertotap/faucetpositionsbeforeenteringcyclingmode.
[0092J Itshouldbenotedthatwaterheaterswithoutstoragecanworkupto145PSI.
145PSI 1000KPA
100PSI 689KPA
80PSI 551KPA
60PSI 413KPA
40PSI 275KPA
[0093J Itshouldbenotedthatthereissubstantialvolumeofwaterinthepiping33that needstobetakenintoconsiderationintheheatingortreatingsystem.Thesevolumes canbeoftheorderof:
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21 5m 15mmpipevolume .88litres
lOin 15mmpipevolume 1.76litres
iSm 15mmpipevolume 2.65litres
20m 15mmpipevolume 3.53litres
25m 15mmpipevolume 4.41litres
27in 15mmpipevolume 4.77litres
[0094J Conversion of standard hot water system
[0095J ReferringtoFigs19to23thereisshowntherequirementstoconverta standardhotwatersystemsuchasshowninFig1toanoperativedeliverysysteminthe formofahotwatersysteminaccordancewithanembodimentoftheinventionincluding supportingpressurepumpsanddiaphragmpressurevessels.
[0096J ItcanbeseeninFig19andinthesimplersystemofFig20thatthedifference tothestandardhotwatersupplyisbyadditionofpartsAandB.
[0097J PartAincludesthestepofinsertingafirstpressurevessel21atornearacold waterinletfeedtothehotwatertank15andCreatingacontrolleddiversionflowpiping betweenthehotwaterheaterthefirstpressurevesselandtheinlettothehotwaterheater
[0098J PartBincludesthestepsofInsertingasecondpressurevessel22byaT connectionatornearadeliveryoutletatornearanendofsupplylinefromthehotwater heatertothedeliveryoutlet(suchasshowninFigs22and23)andaddingpipingtoeffect acontrolledcirculatingdiversionflow
[0099J Acontroller45controlsflowwiththefirstpressurevessel21orselectively effectsflowtothesecondpressurevessel22andtherebytoadeliveryoutlet17.
[001OOJ Thecontrollercanincludearemotecontroloratimercontrol. a)Remotecontrolsystemisrequiredtoswitchthepump/boostcompressoronto chargethesystemuptopulsepressurewithpressureswitchtocutoutatcorrect setpressure. b)Timersareusedtoswitchthepressurepulsesystemon/offatselectedtimesand controlsthetimeperiodsthepulsepressureisheld.
[OO1O1J Themethodofmodifyingahotwatersystemwhereinoneormoreofthefirst orsecondpressurevesselscanusediaphragmpressurevesselssuchasshowninFigs 19to21Inliquid/waterapplicationspressurevesselswithdiaphragmswouldberequired
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22 inbothvesselstokeepthecontentsinthesystemunderpressureandfreefrom contamination.
[00102J Thediaphragmsarealsoneededwhensystempulsepressureisreleasedto pushthewater/liquidbacktothepressurevesselP1readyforthenextpulse.
[00103J Thediaphragmpressurevesselscouldbebladderspringairpressure, bellows, operated to achieve the oscillating pressure and movementofthe water/liquids/chemicalsolutions/air/nitrogen/othergasesinthepipelines.
[00104J Figure 21 shows a purpose-made pressure vessel to fit back of sinks/bathroomstosuitallpipeworkwatervolumesindomesticinstallations.
[00105J Figure22hasPressurevesselsatpulsepressuresystemfullycharged.21 pressurevesselpartemptyand22pressurevesselpartfull.
[00106J Figure23showsapressurevesselatrest(standby)21, pressurevesselhas thewater/liquidreturnedtoitandthepressurevessel22,hasdischargeditscontents. Systemnowatnormalworkingpressure. FireSprinklerSystem
[00107J Inanotherapplicationoftheinventionthereisuseofthepressurepulsesystem forafiresprinklersystemsofwhichthereareanumberoftypesofsprinklersystems.
[00108J Therearefourmainfiresprinklersystems.Theinventionworksparticularly withoneofthem.Thefourtypesare: a)WetPipeCommercialSprinklerSystem b)DryPipeCommercialSprinklerSystem c)Pre-ActionCommercialSprinklerSystem d)FoamWaterCommercialSprinklerSystem Onwetsystemsthepressurepulsesystemwouldusewaterastheoperatingvehicle withpumpsystem.Drysystemswouldusecompressedair/nitrogenasthevehiclewith boostcompressor.
[00109] WetPipeCommercialSprinklerSystem
[0011OJ WetPipeSystemsincludeoverheadpipingfilledwithwaterunderpressure. Onceafireactivatesasprinklerheadwaterimmediatelydischargestofloodthefire.Wet pipesystemsarethemostcommonmostlyduetotheirsimplicityandreliability.Theyalso haverelativelylowinstallationandmaintenancecosts.Butproblemscanarisein
WO2022/246516 PC¶U/AIJ2022/050511
23 temperaturesunder4Q 0 Fahrenheit(about4*4440Celsius)andcanfreeze.PressurePulse Systemscouldkeepexposedareasofpipeworkabovefreezingtemperatures.
[00111J DryPipeCommercialSprinklerSystem
[00112J Insteadofhavingpressurizedwaterthroughouttheentiresystemofsprinkler pipingdrypipesprinklersystemsareonlyfilledwithairornitrogenindirectnon-heated piping.Whenafireactivatesasprinklerwateristhenreleasedintothepipingsystemto dischargeontothefire.Drypipingsystemsworkwellinspaceswithfreezing temperatures.Buttheyaremorecostlytomaintainandmayhaveadelayofupto60 secondsuntilwaterisdischarged.PressurePulseSystemscouldbeusedtoremove moisturefromthepipelinestoavoidcorrosion.
[00113] Pre-ActionCommercialSprinklerSystem
[00114J Insomespacesspecificcircumstancescantriggerasprinklerbyaccident. Pre-Actionsprinklersystemsareatypeofdrysystemwherewaterisheldbackbyapre actionvalve.Forthevalvetoopenadetectedfiremustactivatethepre-actionvalve. Theneachfiresprinklerheadisopenedindividually.Thesesystemsaregreatforspaces withsensitiveequipmentorcostlymaterials.Butthesesystemsaremorecomplexin designpriciertoinstallandmoreexpensivetomaintain.PressurePulseSystemscould U
beusedtoremoveanysubsequentmoisturefromthepipelinestoavoidcorrosion.
[00115] FoamWaterCommercialSprinklerSystem
[00116J Waterisoftenusedforfiresprinklersystemsbecauseofitssimplicity.Butfor certaintypesoffiresitisnotthebestresource.Foamwaterfiresprinklersystemsmix waterwithafoamconcentratemixthatflowsthroughthepipetoextinguishthefire.Foam isnecessarywhenputtingoutflammablesolventfireslikegasoralcohol.Itcanquickly suffocatefumesandeliminatethechanceofre-flash.Pressurepulsesystemscouldbe usedforkeepingthefoamconcentratesevenlymixedthroughoutthepipeline.
[00117] UseofPressurePulseSystemonDryPipeCommercialSprinklerSystem
[00118J ReferringtoFig24thereisshownsystemforpressurepulsesystemusedfor adryfiresprinklersystemasanembodimentofliquiddeliverysysteminaccordancewith theinvention.Infigure24,referencenumerals110,111and112aremanualvalvesand
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24 101, 102,104,105,106and107arenormallyclosedsolenoidvalvesand103isanon returnvalve.
[00119J Thesystemincludes
[00120J Intheoperationofthepressurepulsesystemforadryfiresprinklersystem thereisthestepsonfirstcommissioningof: 0 Manualvalve110isopenmanualvalves111and112areshut 0 Maincompressor109turnsonandchargesthepipeworksystemandstorage vessels113and114to20PSIwithallairpassingthroughthedryer115. 0 At20PSImanualvalve110isshutmanualvalves111and112areopenedand boostcompressor108isturnedonmanually. 0 Thistakesairfromthepipeworksystemviathemanualvalve112andpressurises thestoragetanks113and114to80PSI. 0 Anyadditionalairtakenfromthepipeworksystemisbeingreplacedbymain compressor109,ifrequired.
[00121J At80PSIboostcompressor108ismanuallyturnedoff. 0 Manualvalves111and112areshutsystematrestwith20PSIinmainpipework and80PSIinstoragevessels113and114. 0 PressurePulseSystemReadyToTurnOn: 0 Attimedperiodvalves102,105,and106opentheexcesspressureforcesairflow fromstoragevessels113and114throughdryers115,andintothemainpipework systemtopartfillreceivervessels116. 0 Whensystemisstabilisedatsay50PSIvalve106shutsandvalve107opens. 0 Boostcompressor108turnsonandtakestheadditionalairfromstoragevessels, 113and114andchargesthemainpipeworksystemto80PSI. 0 Atthispointallthestagnantandmoistairfromthepipeworkiscontaininthereceiver vessels116. 0 Thestoragevessels113and114aredownto20PSIandthemainssystem pipeworkisat80PSI.Valves102and107shutsystemholdsinthispositiontoallow anymoistureinpipeworktodryout. * Aftertimedperiodvalves101and106openairnowflowbackfromsystemand receivers116tostoragevessels113andwhenstabilisedatsayapprox.,50PSI, valve105shutsvalve104opensboostcompressor108turnsonandtakesthe additionalairfrommainpipeworksystemandpressurisesthestoragevessels113 and114backupto80PSIleavingthemainpipeworksystemat20PSI. The
WO2022/246516 PC¶U/AIJ2022/050511
25 receivervessels116diaphragmsarebackdownto2OPSIandthediaphragm pressurehasforcedalladditionalairoutofthepipelinesbacktostoragevessels113 and114 0 Valves101and104nowshut. * Systematrest. 0 Atsetrequiredtimethepressurepulsesystemrepeatstheoperation.
[00122J ReferringtoFig25thereisshownasystemforpressurepulsesystemusedto keepcompressedair/nitrogentooptimalmoisturecontentlevelsasanembodimentof liquiddeliverysysteminaccordancewiththeinvention.Thefiresprinklerindustryuse compressedair/nitrogenanddryersareusedtocontroloxygencorrosionandreduce moisturecontentindryandpre-actionfiresprinklersystems.
[00123J ThePressurePulseSystemcanbeusedtokeepmoistureatoptimallevelby oscillatingtheair/nitrogeninsinglepipelinesbackandforthfromthedryersandpointof use.Thesamemethodcouldalsobeusedoncompressedairlinesinmanufacturing plantswherethemoisturecontentiscritical.Andfordryingoutsmallpipelinesbeforeuse byoscillatingdriedcompressedair/nitrogenbetweentwofixedpoints.
[00124J Inair/nitrogenapplicationsthepressurevesselP1wouldnotneeda diaphragmfittedasair/nitrogeniscompressiblebutwaterisnot.Howeverpressure vesselsP2wouldrequireadiaphragmtoforceoutalltheadditionalair/nitrogenthathad beenaddedtothepipelinesunderthepulsepressuremode.
[00125J Thisoscillatingofthewater/liquid/air/nitrogeninthesinglepipelinesisthe mediumthatisusedtoheat/cool/drythepipelinesatpointofuse.
[00126J Figure26showsanapparatusaccordingtoafurtherembodimentofthe presentinventioninstalledonacoldmainswatersupplytochilltheservicepipeworkto 20degreesCandbelowtocomplywithhealthregulationsandavoidinglegionella bacteriawhichoptimallygrowsattemperaturesbetweenabout20- 45degreesC.
[00127J Figure27PressurePulsesysteminstalledonanexistinghotwatersystemin commercialpremisessuchashotelsandthelikefittedwithaconventionalhotwater circulatingpipework.Thistypeofinstallationsubstantiallyeliminateslossofwaterfrom deadlegsandbringsthewaittimeforhotwaterdowntoseconds.
[00128J Figure28showsafurtherembodimentofthepresentinventioninstalledina reversepositionwiththestoragevessel(firstpressurevessel)insideapremisesandthe receivervessel(secondpressurevessel)atthewaterheaterposition.Inthisapplication thereisnoincreaseinwaterpressureontheservicepipeworkasthereceivervessel
WO2022/246516 PC¶U/AIJ2022/050511
26 receivestheadditionalpressureandthewaterfromthestoragevessel.Nopressure reducingvalverequiredonthecold-watersupplypipework.Oneoperatingpulsemode willtakehotwateruptotemperature.OneExamplestoragevesselholdsfourlitresof waterandthepipeworkthreelitrestheapparatusinpulsemodetransfersthreelitresinto thereceivervesselfromthepipework.Thecoldwaterinthestoragevesselnowreplaces thewatertakenoutofthepipeworkwhenthesystemreturnstostandbymode.Three litresofhotwaterarereturnedthethreelitresofcoldwaterisnowreturnedtothestorage vesselandthreelitresofhotwaterisinthepipeworkatthetap/faucetpointandthecold waterinthestoragevesselisheldinplacebythesystemstandingpressure.
Interpretation Embodiments: 'I'
[00129J Referencethroughoutthisspecification to oneembodiment"or an embodiment"meansthataparticularfeaturestructureorcharacteristicdescribedin connectionwiththeembodimentisincludedinatleastoneembodimentofthepresent invention.Thusappearancesofthephrases"inoneembodiment"or"inanembodiment" invariousplacesthroughoutthisspecificationarenotnecessarilyallreferringtothesame embodimentbutmay.Furthermoretheparticularfeaturesstructuresorcharacteristics maybecombinedinanysuitablemanneraswouldbeapparenttooneofordinaryskill intheartfromthisdisclosureinoneormoreembodiments. U
[00130J Similarlyitshouldbeappreciatedthatintheabovedescriptionofexample embodimentsoftheinventionvariousfeaturesoftheinventionaresometimesgrouped togetherinasingleembodimentfigureordescriptionthereofforthepurposeof streamliningthedisclosureandaidingintheunderstandingofoneormoreofthevarious inventiveaspects. Thismethodofdisclosurehoweverisnottobeinterpretedas reflectinganintentionthattheclaimedinventionrequiresmorefeaturesthanare expresslyrecitedineachclaim.Ratherasthefollowingclaimsreflectinventiveaspects lieinlessthanallfeaturesofasingleforegoingdisclosedembodiment.Thustheclaims followingtheDetailedDescriptionofSpecificEmbodimentsareherebyexpressly incorporatedintothisDetailedDescriptionofSpecificEmbodimentswitheachclaim standingonitsownasaseparateembodimentofthisinvention.
WO2022/246516 PC¶U/AIJ2022/050511
27
[00131J Furthermorewhilesomeembodimentsdescribedhereinincludesomebutnot otherfeaturesincludedinotherembodimentscombinationsoffeaturesofdifferent embodimentsaremeanttobewithinthescopeoftheinventionandformdifferent embodimentsaswouldbeunderstoodbythoseintheart.Forexampleinthefollowing claimsanyoftheclaimedembodimentscanbeusedinanycombination.
DifferentInstancesofObjects
[00132J Asusedhereinunlessotherwisespecifiedtheuseoftheordinaladjectives "first" second","third",etc.,todescribeacommonobjectmerelyindicatethatdifferent instancesoflikeobjectsarebeingreferredtoandarenotintendedtoimplythatthe objectssodescribedmustbeinagivensequenceeithertemporallyspatiallyinranking, orinanyothermanner.
SpecificDetails
[00133J Inthedescriptionprovidedhereinnumerousspecificdetailsaresetforth. Howeveritisunderstoodthatembodimentsoftheinventionmaybepracticedwithout thesespecificdetails.Inotherinstanceswell-knownmethodsstructuresandtechniques havenotbeenshownindetailinordernottoobscureanunderstandingofthisdescription.
Terminology
[00134J Indescribingthepreferredembodimentoftheinventionillustratedinthe drawingsspecificterminologywillberesortedtoforthesakeofclarity.Howeverthe inventionisnotintendedtobelimitedtothespecifictermssoselectedanditistobe understoodthateachspecifictermincludesalltechnicalequivalentswhichoperateina similarmannertoaccomplishasimilartechnicalpurpose. Termssuchas"forward" radially'',''peripherally'',''upwardly, ''downwardly'',andthelikeareusedas 'Irearward'',
wordsofconveniencetoprovidereferencepointsandarenottobeconstruedaslimiting terms.
ComprisingandIncluding
[00135J Intheclaimswhichfollowandintheprecedingdescriptionoftheinvention, exceptwherethecontextrequiresotherwiseduetoexpresslanguageornecessary ''
implicationtheword"comprise"orvariationssuchascomprisesorcomprisingare usedinaninclusivesensei.e.tospecifythepresenceofthestatedfeaturesbutnotto
WO2022/246516 PC¶U/AIJ2022/050511
28 precludethepresenceoradditionoffurtherfeaturesinvariousembodimentsofthe invention.
[00136J Anyoneoftheterms:includingorwhichincludesorthatincludesasused hereinisalsoanopentermthatalsomeansincludingatleasttheelements/featuresthat followthetermbutnotexcludingothers.Thusincludingissynonymouswithandmeans comprising.
ScopeofInvention
[00137J Thuswhiletherehasbeendescribedwhatarebelievedtobethepreferred embodimentsoftheinventionthoseskilledintheartwillrecognizethatotherandfurther modificationsmaybemadetheretowithoutdepartingfromthespiritoftheinventionand itisintendedtoclaimallsuchchangesandmodificationsasfallwithinthescopeofthe invention. Forexampleanyformulasgivenabovearemerelyrepresentativeof proceduresthatmaybeused. Functionalitymaybeaddedordeletedfromtheblock diagramsandoperationsmaybeinterchangedamongfunctionalblocks.Stepsmaybe addedordeletedtomethodsdescribedwithinthescopeofthepresentinvention.
[00138J Althoughtheinventionhasbeendescribedwithreferencetospecific examplesitwillbeappreciatedbythoseskilledintheartthattheinventionmaybe U
embodiedinmanyotherforms.
IndustrialApplicability
[00139J Itisapparentfromtheabovethatthearrangementsdescribedareapplicable tothefluidtreatmentandsupplyindustriesandparticularlyhotwatersupplyanddryfire sprinklersystems.

Claims (6)

  1. Claims 1. A delivery system including: a liquid treatment system having a liquid treatment vessel for treating a liquid for delivery to at least one delivery port in a treated condition; a first piping for circulating liquid to be treated between a first pressure vessel and the liquid treatment system; a second piping for circulating treated liquid between the liquid treatment system and a second pressure vessel; and a third piping interconnecting the first and second piping, wherein the third piping includes an intermediate valve means; a pump in the first piping operable in one or more modes of operation; and a flow controller for controlling modes of operation of the intermediate valve means and pump; wherein the second pressure vessel has an internal pressure when empty which is greater than the internal pressure of the first pressure vessel when empty; and wherein a plurality of select piping circuits are provided by the first, second and third piping for treatment for providing treated water and delivery of the treated water in one of multiple modes of operation between the first and second pressure vessel to maintain treated liquid in a state for immediate use at a delivery point.
  2. 2. A liquid delivery system as claimed in claim 2 wherein the internal pressure of the second pressure vessel when empty is double the internal pressure of the first pressure vessel when empty.
  3. 3. A liquid delivery system as claimed in either claim 1 or 2 wherein in one select mode of operation treated liquid returns from the second pressure vessel to the first pressure vessel using the internal pressure differential between the first and second pressure vessels.
  4. 4. A liquid delivery system for supplying treated liquid at a delivery point comprising: a. a liquid treatment system having a liquid treatment vessel for treating a liquid for delivery to a delivery port in a treated condition; b. a first pressure vessel fluidly connected to the liquid treatment system by a first piping; c. at least one second pressure vessel fluidly connected to the liquid treatment system by a second piping, the second piping comprising one or more delivery ports for delivering treated liquid; d. a third piping selectively fluidly connecting the first pressure vessel and the second pressure vessel; and e. at least one flow controller for selectively controlling flow of liquid through the first piping, the second piping, and the third piping; wherein the at least one second pressure vessel has an internal pressure when empty which is greater than the internal pressure of the first pressure vessel.
  5. 5. A liquid delivery system as claimed in claim 4 wherein the internal pressure of the second pressure vessel, when empty, is double the internal pressure of the first pressure vessel when empty.
  6. 6. The liquid delivery system as claimed in either claim 4 or claim 5 wherein in one mode of operation the flow controller causes treated liquid to flow from the second pressure vessel to the first pressure vessel through the third piping using the internal pressure differential between the first and second pressure vessels.
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