EP1145767A2 - Dosiervorrichtung für eine Lösung - Google Patents

Dosiervorrichtung für eine Lösung Download PDF

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Publication number
EP1145767A2
EP1145767A2 EP01106152A EP01106152A EP1145767A2 EP 1145767 A2 EP1145767 A2 EP 1145767A2 EP 01106152 A EP01106152 A EP 01106152A EP 01106152 A EP01106152 A EP 01106152A EP 1145767 A2 EP1145767 A2 EP 1145767A2
Authority
EP
European Patent Office
Prior art keywords
container
dosing device
fit
fitting
dosing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01106152A
Other languages
English (en)
French (fr)
Other versions
EP1145767A3 (de
Inventor
Francesco Madonnini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IDROFILT Srl
Original Assignee
IDROFILT Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IDROFILT Srl filed Critical IDROFILT Srl
Publication of EP1145767A2 publication Critical patent/EP1145767A2/de
Publication of EP1145767A3 publication Critical patent/EP1145767A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E03C1/046—Adding soap, disinfectant, or the like in the supply line or at the water outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/316—Injector mixers in conduits or tubes through which the main component flows with containers for additional components fixed to the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof

Definitions

  • the present invention refers to devices used in water and liquid treatments.
  • the invention refers to the realization of an enhanced dosing device for liquids, fit to be used in waterworks for the water heating and/or vaporization for industrial or domestic or sanitary uses; or however in the water circuits in which flows a fluid fit to be treated with a solution.
  • Such dosing device can be used, for instance, in the circuits for feeding liquid to boilers, boilers for ironing machines, laundries and machines for making drinks, such as percolators.
  • the aggregation of said calcium ions produces the so-called limestone that sediments on the inner walls of the water piping, causing the progressive reduction of the internal section of this latter up to the undesired occlusion, and that causes the corrosion of the same piping.
  • the heating and/or the vaporization waterworks need periodical maintenance that, if not executed, causes the rapid deterioration of the related water circuits, particularly of the small section piping. Furthermore, occlusions of possible safety valves, fit in said waterworks, may occur with the consequent reduction of the global safety factor of the waterworks up to constitute a danger for the operators.
  • the water may be treated by using decalcifier agents, such as for instance the polyphosphates, particularly obtained by polymerization of the sodium monophosphates.
  • decalcifier agents such as for instance the polyphosphates, particularly obtained by polymerization of the sodium monophosphates.
  • Such polyphosphates, mixed with the water react with the calcium ions, avoiding their aggregation and therefore the limestone formation, liberating sodium ions at the same time.
  • the dosing device object of the Italian patent application n. BO97A 000633 is provided with a fitting, to be fit in series with the feeding piping of the circuit, and with a container of the solution which is dosed by virtue of the interposition of diverter means positioned between the fitting and the container.
  • the fitting has a central throttling in order to realize a pressure difference between the upstream and downstream sections of said fitting.
  • this fitting further has an offtake through which part of the fluid, which runs in the piping, flows and ends into the container through the diverter means, so mixing itself with the solution present inside said container.
  • the main drawback of the known dosing device consists in that the diverter means have a water inlet channel from the upstream offtake toward the inside of the container and an outflow channel of the mixture water- dosing liquid from the container toward the downstream offtake which have a very sinuous shape, so making extremely turbulent the fluid flow inside said channels.
  • the main object of the present invention is to propose an enhanced dosing device fit to avoid or at least minimize the slowdowns, the stagnation and the lack of homogeneities of the flow, occurring inside the diverter means.
  • Another object of the present invention is to propose a dosing device fit to avoid or at least to reduce the dilution of the dosing liquid of the container that follows the pressure increases of the fluid flowing in the hydraulic circuit in which is fit the dosing device, such as for instance the water hammers.
  • Another object is to propose a dosing device enabling an extremely homogeneous and constant water treatment, guaranteeing that the quantity of treated water always contains a polyphosphate percentage lower than the limits allowed by the legislation in force in the matter.
  • numeral 1 indicates a dosing device for a dosing liquid 8 in a feeding fluid 29, particularly water, that flows in heating or vaporization waterworks for sanitary or alimentary use, both industrial and domestic.
  • the dosing device 1 essentially includes a fitting 2, a closing element 4, a container 6, a splashguard ring 30 and diverter means 7.
  • the fitting 2 has a throttling 2a of around 3 mm of the inner section centrally positioned, and whose ends can be jointed to a feeding duct 3, by means of truncated conical portions 2b starting from the throttling ends and whose biggest diameter is 8,5 mm, in correspondence of the duct 3, and whose smallest diameter is 8 mm in correspondence of the throttling 2a.
  • the closing element 4, associated to the fitting 2 is provided with a couple of regulating ducts 5, an inlet duct 5a and an outflow duct 5b, respectively positioned upstream and downstream the throttling 2a and precisely in proximity of the inlet and outlet sections of this latter, and fit for the flow communication between the inside of the fitting 2 with the inside of the container 6.
  • a gasket 21 positioned between the closing element 4 and the diverter means 7.
  • indicator element 22 spherical shaped, having a specific weight slightly higher than the specific weight of the feeding fluid 29, but lower than that one of the dosing liquid 8.
  • the diverter means 7 are interposed between the closing element 4 and the container 6 and they are supported by. a raised external edge 31 of the splashguard ring 30 which is supported by a shoulder 39 carried out in the inner wall of the container 6 in proximity of its upper opening.
  • Said diverter means 7 are fit to direct predetermined quantity of the feeding fluid at first through an inlet path included between the fitting 2 and the container 6, through an inlet duct 5a, and afterwards to direct an equal amount of mixture of the feeding fluid with the dosing liquid 8 through an outflow path, included between the container 6 and the fitting 2, by means of an outflow duct 5b.
  • the splashguard ring 30 has a circular edge 33 protruding inside the container 6 and having a groove 32 fit to face the diverter means 7 in correspondence of a couple of holes 20a and 20b.
  • the diverter means 7 include an upper element 10 including a circular shaped support base 14, from which two bent fins 12a and 12b protrude, each of said fins having a flat top on which are made a couple of holes, respectively 13a and 13b, connecting respectively the inlet duct 5a and the outflow duct 5b.
  • the closing element 4 is internally provided with a circular crown 26 within which the holes 13a and 13b are positioned and around which the gasket 21 is arranged so that to realize a watertight coupling between the container 6 and the closing element 4.
  • the diverter means 7 further include a lower element 11 constituted by a circular shaped base 23 provided with a raised side edge 23a joinable, in a complementary and univocal way, with the support base 14.
  • Said base 23 has the couple of holes 20a and 20b, which are diametrically opposed and fit for connecting respectively the holes 13a and 13b with the inside of the container 6, by interposing a couple of spiral shaped coils 16, concentrically positioned between them and having a shared end.
  • the coils 16 define a couple of channels, inlet 24a and outflow 24b, being respectively an inlet path into the container 6 for the feeding fluid 29 and an outflow path from the container 6 of the mixture of feeding fluid 29 and of dosing liquid 8.
  • Each of these channels 24a and 24b has a blind end, positioned in correspondence of the central portion of the base 23 while, in proximity of the other end there is the related hole 20a or 20b executed on the base 23.
  • the facing walls of a related coil, the support base 14 and the base 23 thus constitute these channels 24a and 24b.
  • the holes 13a and 13b are positioned on each of said channels, inlet 24a and outflow 24b, by virtue of the univocal coupling between the outflow elements, upper 10 and lower 11, carried out by means of a pin 17 protruding from the side edge 23a and lockable in a corresponding slot 18 on the external edge of the support base 14.
  • the operation of the dosing device 1 is simple because the feeding fluid 29, for instance water, coming from the portion of the feeding duct upstream the throttling 2a is forced to flow through this latter up to the downstream portion of the feeding duct 3.
  • the presence of the throttling 2a determines a pressure difference between the upstream section and the downstream section of said throttling, in correspondence of the sections of the regulating ducts 5 and precisely a upstream pressure greater than the downstream section.
  • This hydrodynamic phenomenon causes the piping of a water portion which flows into the portion of the feeding duct 3 upstream the throttling 2a toward the inlet duct 5a and therefore toward one or both of the holes 13a on the upper element 10 of the diverter means 7.
  • the water flows in the inlet channel 24a and therefore flows along the spiral path of this latter up to reach the hole 20a from which the water flows into the container 6 by interposing the splashguard ring 30.
  • the water spout coming out from the hole 20a ends on the groove 32 of the splashguard ring 30 below and therefore its inlet trajectory into the container 6 is diverted toward the central portion of this latter and has a reduced intensity.
  • a same amount of mixture so obtained by mixing the water and the dosing liquid 8 follows the path in the reverse direction in comparison with the preceding direction, sucked by the existing depression downstream the throttling 2a, flowing in the outflow channel 24b through the hole 20b and therefore flowing into the outflow duct 5b through the two holes 13b until it flows into the portion of feeding duct 3 downstream the throttling 2a.
  • the amount of mixture water-liquid 8 flows and disperses in the fluid flow, or better in the water flow, that flows downstream the throttling 2a, so making the water treatment.
  • Both the water flow inside the inlet channel 24a and the mixture flow inside the outflow channel 24b are characterized in that they are almost laminar or however not much turbulent by virtue of the spiral shape of the inlet and outflow channels. In this way the flow resistances are very low and a great uniformity of solution dosing inside the water can be achieved.
  • the splashguard ring 30 is particularly effective in the opening/closing conditions of the hydraulic circuit in which the dosing device is fit, since these conditions might cause sudden and conspicuous pressure increases inside the circuit piping, which generate the so-called water hammers.
  • the water spout flowing into the container 6 by means of the hole 20a has an high pressure force that is damped by means of the groove 32 of the ring 30 which diverts the water spout.
  • the water spout even with a water hammer, does not reach the dosing liquid contained in proximity of the container bottom and therefore it does not dilute said dosing liquid, and consequently the splashguard ring guarantees a more uniform final dosing of the solution in the water.
  • the liquid 8 is constituted by a powder mixture based on sodium hexametaphosphate for food use, for instance diluted in water in the proportions of 33% of sodium hexametaphosphate and the remaining 66% of water. Said mixture has about 1,3 Kg/dm 3 specific weight.
  • the regulating ducts 5 have a diameter between 0,5 and 3,5 mm, preferably 3 mm, in order to optimize the regulation of the water and mixture amount flowing through said regulating ducts in order to avoid that the amount of polyphosphates in the mixture fluid-liquid, that is water and polyphosphates which is mixed with water downstream the throttling 2a, exceeds the limits settled at 5 mg/l allowed by the legislation in the matter.
  • the regulating ducts 5 have a diameter ranging from 1/12 to 1/3 of the internal diameter of the duct 2.
  • the diameter of the throttling 2a is 3 mm and the diameter of the regulating ducts is 1 mm.
  • the specific weight of the indicator element 22 is greater than the specific weight of said feeding fluid of a percentage quantity ranging from 1% to 5%. Particularly if the feeding fluid is water, then the specific weight of the indicator element 22 is ranging from 1,01 to 1,05 Kg/dm 3 . This facilitates the progressive movement of the indicator element 22 toward the bottom of the container 6 because the mixture water-dosing liquid 8 becomes poor of the active element, the polyphosphate, while at the same time said mixture enriches in water causing a progressive decrease of the specific weight of said mixture up to reach a value close to the water value. In such condition the indicator element is positioned in proximity of the container bottom therefore acting like a display element of the concentration of the water-liquid mixture inside the container and the need of replacing its content with a new amount of dosing liquid 8.
  • the replacement of the dosing liquid 8 inside the container can be facilitated if a check valve 15 is fit in the feeding water circuit upstream of the dosing device 1; said check valve, when activated, interrupts the water passage in the water circuit.
  • a vent valve is further fit, for the air eventually entered into the piping, particularly into the container 6, following the uncoupling and coupling operations of this latter with the closing element 4 of the dosing device 1, needed for substituting the dosing liquid 8 inside said container.
  • the device 1 can be easily and advantageously fit upstream the feeding circuit of coffee machine, boilers for the steam production, for instance for irons, and boilers for the hot water production as well.
  • the main advantage of the present invention is that to provide enhanced dosing device fit to avoid or at least minimize the flow losses inside the diverter means and thus the slowdowns, the stagnation and the lack of homogeneity of the flow.
  • Another advantage of the present invention is to provide a dosing device fit to avoid or at least to reduce the dilution of the dosing liquid of the container following the pressure increases of the fluid flowing in the hydraulic circuit in which the dosing device is fit, such as for instance the water hammers.
  • Another advantage is to provide a dosing device that enables an extremely homogeneous and constant water treatment, guaranteeing that the amount of treated water contains a polyphosphate percentage always lower than the limits allowed by the legislation in force in the matter.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cookers (AREA)
  • Devices For Dispensing Beverages (AREA)
  • External Artificial Organs (AREA)
EP01106152A 2000-03-13 2001-03-13 Dosiervorrichtung für eine Lösung Withdrawn EP1145767A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000BO000132A IT1320918B1 (it) 2000-03-13 2000-03-13 Dispositivo dosatore di una soluzione.
ITBO200132 2000-03-13

Publications (2)

Publication Number Publication Date
EP1145767A2 true EP1145767A2 (de) 2001-10-17
EP1145767A3 EP1145767A3 (de) 2004-12-01

Family

ID=11438302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106152A Withdrawn EP1145767A3 (de) 2000-03-13 2001-03-13 Dosiervorrichtung für eine Lösung

Country Status (2)

Country Link
EP (1) EP1145767A3 (de)
IT (1) IT1320918B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2431711A (en) * 2005-10-31 2007-05-02 Richard Strong Central heating inhibitor applicator
WO2011003476A1 (en) * 2009-07-10 2011-01-13 Ydroteq Nv A dosing system and a cartridge
CN108854684A (zh) * 2018-07-10 2018-11-23 芜湖喜源味食品有限公司 一种压榨、搅拌一体化食品加工搅拌装置
WO2022125379A1 (en) * 2020-12-07 2022-06-16 Rheem Manufacturing Company Liquid concentrate dosing systems
US12139429B2 (en) 2020-12-07 2024-11-12 Rheem Manufacturing Company Scaling treatment systems for water heaters

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188066A (en) * 1937-10-02 1940-01-23 Pyrene Minimax Corp Apparatus for injecting foam stabilizing solutions
US2507410A (en) * 1946-08-29 1950-05-09 Clayton T Kemp Mixing nozzle
GB688322A (en) * 1949-10-17 1953-03-04 Waldemar Foerstner Feeding apparatus for mixing a liquid with another liquid flowing under pressure
GB800279A (en) * 1955-10-18 1958-08-20 Hugh Noel Mcnair Liquid proportioning device
FR1205037A (fr) * 1957-10-29 1960-01-29 Benckiser Gmbh Joh A Dispositif destiné à préserver les chauffe-eau de l'entartrage
GB936956A (en) * 1960-05-20 1963-09-18 Ronald Sidney Garwood Improvements in or relating to liquid dispensing apparatus
FR2048359A5 (en) * 1970-03-09 1971-03-19 Kirmann Roger Anti-scaling liquid mixer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2431711A (en) * 2005-10-31 2007-05-02 Richard Strong Central heating inhibitor applicator
WO2011003476A1 (en) * 2009-07-10 2011-01-13 Ydroteq Nv A dosing system and a cartridge
CN108854684A (zh) * 2018-07-10 2018-11-23 芜湖喜源味食品有限公司 一种压榨、搅拌一体化食品加工搅拌装置
WO2022125379A1 (en) * 2020-12-07 2022-06-16 Rheem Manufacturing Company Liquid concentrate dosing systems
US11866915B2 (en) 2020-12-07 2024-01-09 Rheem Manufacturing Company Liquid concentrate dosing systems
US12139429B2 (en) 2020-12-07 2024-11-12 Rheem Manufacturing Company Scaling treatment systems for water heaters

Also Published As

Publication number Publication date
ITBO20000132A1 (it) 2001-09-13
IT1320918B1 (it) 2003-12-10
EP1145767A3 (de) 2004-12-01

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