EP2756127B1 - Dosiervorrichtung und verfahren zur dosierung mindestens eines fluids - Google Patents

Dosiervorrichtung und verfahren zur dosierung mindestens eines fluids Download PDF

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Publication number
EP2756127B1
EP2756127B1 EP11761539.3A EP11761539A EP2756127B1 EP 2756127 B1 EP2756127 B1 EP 2756127B1 EP 11761539 A EP11761539 A EP 11761539A EP 2756127 B1 EP2756127 B1 EP 2756127B1
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EP
European Patent Office
Prior art keywords
line
fluid
dosage
valve
dosing
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EP11761539.3A
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German (de)
English (en)
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EP2756127A1 (fr
Inventor
Dirk De Brabanter
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Ecolab USA Inc
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Ecolab USA Inc
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Publication of EP2756127A1 publication Critical patent/EP2756127A1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4463—Multi-dose dispensing arrangements

Definitions

  • the present invention relates to a dosage system for dosing at least one fluid, in particular to at least one appliance, and an according method for dosing at least one fluid using said dosage system.
  • Known dosage systems for example comprise a number of valves with corresponding pumps and flow meters, for example one of each for each liquid product that is to be dosed, which leads to high mechanical expenditures, and high installation and maintenance costs.
  • Document US 5 826 749 A discloses a system for dosing one or more fluids, in particular liquid products, comprising a first dosage valve provided with at least a first and a second input connector and an outlet, wherein the input connectors are each connected to a corresponding first and second feeding line each connectable to a fluid reservoir, and wherein the outlet is connected to a dosing line, which is connectable to several appliances, and a pump arranged at the dosing line for pumping a fluid from the corresponding fluid reservoir towards said appliances, wherein the first dosage valve is configured to switchably connect at least one input connector to the outlet.
  • Document US 5 826 749 A further discloses a second dosage valve comprising at least a first and a second output connector and at least one inlet, wherein the at least one inlet is connected to the dosing line, wherein the output connectors are each connected to several discharge lines, wherein the first and second dosage valves comprise each a rotary connector element, and wherein said connector element connects the input connectors to the outlet and the inlet to the output connectors, respectively.
  • a further object of the present invention is to provide a method for dosing a fluid which comprises the use of the dosage system according to the present invention.
  • the dosage system for dosing one or more fluids, in particular liquid products comprises a first dosage valve comprising at least a first and a second input connector and an outlet, wherein the input connectors are each connected to a corresponding first and second feeding line each connectable to a fluid reservoir, and wherein the outlet is connected to a dosing line, which is connectable to a first or second appliance, a first pump arranged at the dosing line for pumping a fluid from the corresponding fluid reservoir towards said first or second appliance, wherein the first dosage valve is configured to switchably connect at least one input connector to the outlet, wherein a second dosage valve comprising at least a first and a second output connector and at least one inlet is provided, wherein the at least one inlet is connected to the dosing line, wherein the output connectors are each connected to a corresponding first and second discharge line, wherein the first and second discharge line are attached to a corresponding of said first and second appliance, wherein at least one flushing line is connected to at least one discharge
  • the first pump arranged at the dosing line for pumping the fluid may for example be a diaphragm pump.
  • the fluid may be sucked through the first dosage valve by an underpressure exerted on to the first dosage valve by the first pump.
  • the first dosage valve may for example be at least partially made out of polypropylene (PP) for use with alkaline liquid products, and out of polyvinylidene fluoride (PVDF) for use with acidic fluid products.
  • PP polypropylene
  • PVDF polyvinylidene fluoride
  • the dosage system according to the present invention has the advantage, that for dosing one or more fluids, in particular liquid products, for example only one dosage valve with a first pump is needed.
  • the number of for example pumps and flow meters may be significantly reduced, due to which the mechanical expenditures may also be reduced, which leads to a reduction in the installation and maintenance costs.
  • the second dosage valve may for example be at least partially made out of polypropylene (PP) for use with alkaline liquid products, and out of polyvinylidene fluoride (PVDF) for use with acidic fluid products.
  • the fluid may be pumped from the first dosage valve by an underpressure exerted to the first dosage valve from the first pump, and may be pumped to and through the second dosage valve by a pressure created by the first pump.
  • the second dosage valve may comprise a further inlet, for example for mixing and/or diluting the fluid supplied by the first dosage valve to the at least one inlet.
  • the second dosage valve further comprises at least a first output connector and a second output connector, wherein the first and second output connectors are each fluid permeable attached to a corresponding first and second discharge line.
  • the first and second discharge line may be attached to a corresponding first and second appliance, for example a washing or laundry machine.
  • the second dosage valve may comprise further output connectors corresponding to the number of appliances that are to be supplied with at least one fluid.
  • the second dosage valve may switchably connect an input, in particular one input, directly fluid permeable to one output connector.
  • the first and/or second dosage valve comprises a connector element, wherein the connector element is connecting an input connector to the outlet and/or the inlet to an output connector.
  • the connector element may be connected to the outlet and/or inlet for example in order to provide a continuously fluid permeable connection to the outlet and/or inlet.
  • the connector element may be moveably connected to an input connector and/or output connector, in order to provide a switchable fluid permeable connection to the selected input connector and/or selected output connector.
  • the connector element may be selectably switched to directly fluid permeable connect an input connector to the outlet and/or an output connector to the inlet. This has the advantage of a cost efficient switching between different fluids, in particular liquid products, and different appliances without complicated valve racks.
  • the connector element is designed as a rotary switch.
  • the rotary switch for example cylindrically formed, may comprise one permanently attached or fixed end, attached to the inlet and/or outlet, wherein by rotating of at least a part of the rotary switch a selected input connector and/or a selected output connector may be selectively directly fluid permeable connected to the outlet and/or inlet.
  • the rotary switch allows for a simplified design of the dosage valves, further reducing the mechanical expenses and increasing the cost efficiency of the dosage system. Further, the needed installation space may be reduced.
  • the first and/or second dosage valve comprises a valve manifold, wherein the valve manifold is connecting an input connector to the outlet and/or the inlet to an output connector.
  • the valve manifold may be connected to at least a first and a second input and/or output connector, wherein the valve manifold comprises a feeding valve allocated to each input and/or output connector for selectably connecting one input and/or output connector to one outlet and/or inlet.
  • the valve manifold, in particular the according feeding valve may be selectably switched to directly fluid permeable connect an input connector to the outlet and/or an output connector to the inlet.
  • the number of feeding valves of the valve manifold of the first dosage valve may correspond to the number of input connectors and/or feeding lines and/or the number of liquid products to be dosed.
  • the number of feeding valves of the valve manifold of the second dosage valve may correspond to the number of output connectors and/or appliances to be supplied with a fluid.
  • the valve manifold may be designed as a valve manifold block. The valve manifold has the advantage of a simple design allowing for a cost efficient switching between different fluids, in particular liquid products.
  • At least one feeding line is connected to a fluid reservoir in form of a water supply, in particular a water main.
  • the at least one feeding line connected to a water reservoir, in particular connected to a water main may comprise a water valve for controlling the flow of water, in order to be able to close the feeding line and separate the water reservoir from the first dosage valve.
  • the water main may be potable water, centrally supplied to a building for example.
  • the connection of a feeding line to a water reservoir has the advantage, that by selecting this feeding line and connecting it to the outlet of the first dosage valve it is possible to flush the dosage system at least partially, for example before selecting a different fluid to be dosed, in order to avoid unwanted chemical reactions inside the dosage system. Further, it is possible to either flush a certain amount of dosed fluid faster to for example an appliance and/or supply a certain amount of water to an appliance, for example a laundry machine, for diluting a dosed product.
  • At least one flushing line is connected to the dosing line and/or at least one discharge line, whereby the flushing line is connected to a fluid supply and comprises a flushing valve for controlling the amount of fluid that is supplied through the flushing line.
  • the fluid supply may be a water supply or a gas supply, wherein the water supply may be a water main, and the gas supply may be a pressurized air supply.
  • the flushing line is connected to the dosing line, for example for at least partially flushing the dosing line and/or the first pump.
  • At least one flushing line may be connected to at least one discharge line, for example in order to flush a certain amount of dosed fluid faster to an appliance and/or supply a certain amount of water to an appliance, in particular a laundry machine, for diluting a dosed product.
  • One flushing line may be attached to several discharge lines, or one flushing line may be connected to each discharge line, wherein each flushing line comprises a flushing valve.
  • a second pump is provided.
  • the second pump may be a diaphragm pump creating an underpressure at the first dosage valve for sucking a fluid from a fluid reservoir, and pumping the fluid to an appliance, in particular through a second dosage valve.
  • the second pump may be arranged parallel to the first pump at the dosing line. This has the advantage of having a backup pump in case the first pump fails, and/or the possibility to increase the amount of fluid that is pumped to an appliance.
  • a flow meter is arranged at the dosing line for measuring the amount of fluid pumped through the dosing line.
  • the flow meter may be a gear meter.
  • a safety valve for example in the direction of flow of a fluid, behind the flow meter may be provided in order to expel the fluid to a drain in case of a blockage.
  • the flow meter at the dosing line allows for measuring an amount of any fluid that is pumped to an appliance, thus reducing the mechanical expenditures and reducing the installation and maintenance costs of the dosage system.
  • At least one fluid reservoir is a canister.
  • At least one fluid reservoir may be designed in form of a canister or a drum, in particular a product drum. This allows for providing separate fluids, in particular liquid products, in separate canisters, connectable to the feeding lines. This has the advantage of improved handling and supplying of the fluids, in particular liquid products. Also it is possible, for example if two feeding lines provide the same product from a first and a second canister, that after the first canister has been emptied, the fluid is supplied by the second canister after switching the feeding lines accordingly whilst the first canister may be exchanged.
  • a further aspect of the present invention is a method for dosing one or more fluids, comprising the steps of connecting a first feeding line fluid permeable to a dosing line by connecting a first input connector to an outlet of the first dosage valve of the above described dosage system, continuously or discontinuously pumping a fluid from the first feeding line to an appliance, optionally connecting a second feeding line fluid permeable to the dosing line by connecting a second input connector to the outlet of the first dosage valve.
  • a first feeding line may be connected to a dosing line for supplying a first fluid to a first appliance by connecting the first feeding line, in particular a first input connector, to an outlet of the first dosage valve.
  • the first feeding line may be connected to the dosing line by accordingly switching the first dosage valve, for example rotating a connector element or by operating a valve manifold.
  • a first pump for example arranged at the dosing line
  • an underpressure may be created at the first dosage valve in order to suck the first fluid from a first fluid reservoir through the first feeding line and the first dosage valve, further pumping the first fluid through the dosing line to an appliance.
  • the first fluid may be pumped continuously or discontinuously from the first fluid reservoir to the first appliance.
  • the first dosage valve may be switched to a second feeding line, connectable to a second fluid reservoir, if desired, in particular when the first pump is stopped, in order to supply a second fluid to for example the first appliance.
  • a second feeding line connectable to a second fluid reservoir, if desired, in particular when the first pump is stopped, in order to supply a second fluid to for example the first appliance.
  • the switching may be performed for example by rotating the connector element or operating the valve manifold of the first dosage valve.
  • the method further comprises the step of connecting the dosing line to a discharge line by connecting an inlet to an output connector of a second dosage valve.
  • a second dosage valve may comprise an inlet connected to the dosing line and at least a first and a second output connector, connected to a first and a second discharge line connectable to a first and a second appliance.
  • the inlet may be connected to an output connector, for example by rotating a connector element or operating a valve manifold of the second dosage valve, wherein the selected output connector, and thus the corresponding discharge line, is fluid permeable connected to the inlet of the second dosage valve.
  • the inlet of the second dosage valve may be connected to any output connector of the second dosage valve.
  • any fluid being supplied to the second dosage valve through the dosing line may be selectably supplied to any appliance connected to an output connector via a corresponding discharge line.
  • This has the advantage of distributing a fluid, in particular a liquid product, supplied to the second dosage valve to one or more appliances, connected to the second dosage valve, with one dosage valve. Thus, the mechanical expenditures may be reduced.
  • the method further comprises the step of flushing the first and or second dosage valve and the dosing line and/or discharge line.
  • a feeding line of the first dosage valve may be connected to a water reservoir, for example a water main.
  • water may be pumped through the first dosage valve to an appliance, flushing the dosage system, for example after supplying a first fluid and prior to supplying a second fluid to an appliance.
  • the method further comprises the step of additionally flushing of at least a portion of a discharge line.
  • At least one flushing line may be connected to one or more discharge lines.
  • a fluid from a fluid supply may be flushed through the corresponding discharge line, in particular without pumping from a first and/or second pump at the dosing line, towards a corresponding appliance.
  • the fluid supply may be a water supply, for example a water main, or a gas supply, for example a pressurized air supply.
  • the flushing line may be attached to one or more discharge lines and/or a separate flushing line, in particular with a corresponding flushing valve, may be attached to each discharge line.
  • a flushing line may be activated in particular by operating a corresponding flushing valve of the flushing line connected to the discharge line.
  • the method further comprises the step of measuring the amount of fluid pumped through the dosing line by a flow meter.
  • a flow meter enables the measurement of an amount of fluid pumped through the dosing line, thus enabling a precise dosing of a fluid to an appliance.
  • the amount of fluid measured by the flow meter may be used in order to activate or deactivate the pump, depending on the amount of fluid to be dosed.
  • the flow meter may be connected to and controlled by a control unit. If the flow meter is measuring no flow of a fluid even if the pump is running, a blockage may have occurred and a safety valve may be operated in order to avoid a pressure build up and damage to the dosage system. This allows for an automated and safe operation of dosing a fluid to an appliance.
  • FIG. 1 shows an embodiment of the dosage system 10 for dosing one or more fluids according to the present invention.
  • a first dosage valve 12 comprising eight input connectors 14 and one outlet 16 is shown.
  • the input connectors 14 are connected to feeding lines 18, which are connected to corresponding fluid reservoirs 20.
  • One of the fluid reservoirs 20 is configured as a water supply in form of a water main 22 comprising a water valve 24 for opening or closing the water supply.
  • the remaining feeding lines 18 are connected to fluid reservoirs 20 in form of canisters or drums.
  • the fluid reservoirs 20 may contain the same or different fluids, for example may two fluid reservoirs 20 comprise the same fluid in order to allow for a continuous supply of the fluid, in case one fluid reservoir 20, in particular canister, needs to be exchanged.
  • the fluid reservoirs 20 may comprise each different fluids, for example liquid products.
  • a fluid may be pumped through a dosing line 24 towards at least one appliance 26 by a first pump 28.
  • the first pump 28 may create an underpressure inside at least part of the dosing line 24, the first dosage valve 12, the selected feeding line 18, allowing a fluid to be sucked from a corresponding fluid reservoir 20.
  • a second pump 30 may be installed parallel to the first pump 28 in order to increase the amount of pumped fluid or in order to replace the first pump 28 in case of a malfunction of the first pump 28.
  • the first and/or second pump may be able to pump about 50 litres per hour.
  • the fluid is pumped by the pressure of the first and/or second pump 28,30 through the dosing line 24, wherein a flow meter 32 measures the amount of fluid pumped through the dosing line.
  • a safety valve 34 which may be a pressure valve, is integrated into the dosing line 24 in order to prevent a pressure build up, possibly damaging the dosage system 10, in case of a blockage for example.
  • the fluid is pumped through the dosing line 24 to a second dosage valve 36.
  • the second dosage valve 36 comprises one inlet 38, connected to the dosing line 24, and eight output connectors 40, each connected to a corresponding discharge line 42, connected to a corresponding appliance 44, for example a laundry machine.
  • To each discharge line 42 a flushing line 46 with a corresponding flushing valve 48 is connected.
  • the flushing lines 46 are connected to a water main 22 or a pressurized air supply.
  • each discharge line 42 allows for an independent and/or simultaneous at least partial flushing of each discharge line 42, for example to flush a dosed fluid faster into a corresponding appliance 44 by water or pressurized air, and/or to supply an extra amount of water to an appliance 44, for example for diluting the dosed fluid.
  • the first and second dosage valve 12,36 each comprise a connector element 50 for connecting alternatively switchable one input connector 14 with the outlet 16 and/or the inlet 38 with one output connector 40.
  • the connector element 50 may be designed in form of a rotary switch, wherein the connector element 50, in particular the rotary switch, may be at least partially rotatable.
  • the connector element 50 of the first dosage valve 12 is permanently fluid permeable connected to the outlet 16 and alternatively connectable to any of the input connectors 14.
  • the connector element 50 of the second dosage valve 36 is permanently fluid permeable connected to the inlet 38 and alternatively connectable to any of the output connectors 40.
  • the connector element 50 of the first dosage valve 12 is connecting a feeding line 18, which is connected to a water main, to the outlet 16 of the first dosage valve 12.
  • the connector element 50 of the second dosage valve 36 connects the inlet 38 to one of the output connectors 40, connected to an appliance 44 by a corresponding discharge line 42. This allows, if the water valve 22 is opened and the pump 28, 30 operated, a fluid, in particular water, for example to be dosed through the first dosage valve 12, in particular the connector element 50 of the first dosage valve 12, the dosing line 24, the second dosage valve 36, in particular the connector element 50 of the second dosage valve 36, through the selected discharge line 42 and to a corresponding appliance 44.
  • the first and second dosage valves 12,36, the water valve 22, the first and second pump 28,30, the flow meter 32, the safety valve 34 and the flushing valves 22 may be connected to a control unit (not shown) and may be operated by the control unit.
  • the appliances 44 may also be connected to and operated by the control unit.

Claims (14)

  1. Système de dosage destiné à doser un ou plusieurs fluides, notamment des produits liquides, comprenant :
    une première vanne de dosage (12) comprenant au moins un premier et un second raccord d'entrée (14) et un orifice de sortie (16), les raccords d'entrée (14) étant chacun raccordés à des première et seconde conduites d'alimentation (18) correspondantes, chacune pouvant être raccordée à un réservoir de fluide (20), et
    l'orifice de sortie (16) étant raccordée à une conduite de dosage (24), qui peut être raccordée à un premier ou second appareil (44),
    une première pompe (28) disposée au niveau de la conduite de dosage (24) destinée à pomper un fluide à partir du réservoir de fluide correspondant (20) vers ledit premier ou second appareil (44), la première vanne de dosage (12) étant conçue pour se raccorder de manière commutable à au moins un raccord d'entrée (14) vers l'orifice de sortie (16), une seconde vanne de dosage (36) comprenant au moins un premier et un second raccord de sortie (40) et au moins une entrée (38) étant prévue, l'au moins une entrée (38) étant raccordée à la conduite de dosage (24), les raccords (40) de sortie étant chacun raccordés à des première et seconde conduites de décharge correspondantes (42), les première et seconde conduites de décharge (42) étant fixées à un correspondant desdits premier et second appareils (44) ; au moins une conduite d'évacuation (46) étant raccordée à au moins une conduite de décharge (42),
    et la conduite d'évacuation (46) étant raccordée à une alimentation en fluide (22) et comprenant une vanne de rinçage (48) destinée à contrôler la quantité de fluide qui est fournie à travers la conduite de rinçage (46).
  2. Système de dosage selon la revendication 1, la première et/ou la seconde vanne de dosage (12, 36) comprenant un élément raccord (50), l'élément raccord (50) raccordant un raccord d'entrée (14) à l'orifice de sortie (16) et/ou l'orifice d'entrée (38) à un raccord de sortie (40).
  3. Système de dosage selon la revendication 2, l'élément raccord (50) étant conçu comme un commutateur rotatif.
  4. Système de dosage selon l'une quelconque des revendications précédentes, la première et/ou la seconde vanne de dosage (12, 36) comprenant un collecteur de vannes, le collecteur de vannes raccordant un raccord d'entrée (14) à l'orifice de sortie (16) et/ou l'orifice d'entrée (38) à un raccord de sortie (40).
  5. Système de dosage selon l'une quelconque des revendications précédentes, au moins une conduite d'alimentation (18) étant raccordée à un réservoir de fluide (20) sous la forme d'une alimentation en eau, en particulier une canalisation principale (22).
  6. Système de dosage selon l'une quelconque des revendications précédentes, au moins une conduite de rinçage (46) étant raccordée à la conduite de dosage (24) et à au moins une conduite d'évacuation (42).
  7. Système de dosage selon l'une quelconque des revendications précédentes, une seconde pompe (30) étant prévue.
  8. Système de dosage selon l'une quelconque des revendications précédentes, un débitmètre (32) étant disposé au niveau de la conduite de dosage (24) pour mesurer la quantité de fluide pompée à travers la conduite de dosage (24).
  9. Système de dosage selon l'une quelconque des revendications précédentes, au moins un réservoir de fluide (20) étant une cartouche.
  10. Procédé destiné à doser un ou plusieurs fluides, comprenant les étapes consistant à
    - raccorder une première conduite d'alimentation (18) perméable au fluide à une conduite de dosage (24) en raccordant un premier raccord d'entrée (14) à un orifice de sortie (16) de la première vanne de dosage (12) du système de dosage (10) selon l'une quelconque des revendications 1 à 9,
    - pomper en continu ou en discontinu un fluide à partir de la première conduite d'alimentation (18) vers un appareil (44),
    - éventuellement raccorder une seconde conduite d'alimentation (18) perméable au fluide à la conduite de dosage (24) en raccordant un second raccord d'entrée (14) à la sortie (16) de la première vanne de dosage (12).
  11. Procédé selon la revendication 10, comprenant en outre l'étape de raccord de la conduite de dosage (24) à une conduite de décharge (42) en raccordant une entrée (38) à un raccord de sortie (40) d'une seconde vanne de dosage (36).
  12. Procédé selon la revendication 10 ou 11, comprenant en outre l'étape de rinçage de la première et ou de la seconde vanne de dosage (12, 36) et de la conduite de dosage (24) et/ou de la conduite d'évacuation (42).
  13. Procédé selon l'une quelconque des revendications 10 à 12, comprenant en outre l'étape de rinçage supplémentaire d'au moins une partie d'une conduite d'évacuation (42).
  14. Procédé selon l'une quelconque des revendications 10 à 13, comprenant en outre l'étape de mesure de la quantité de fluide pompée à travers la conduite de dosage (24) par un débitmètre (32).
EP11761539.3A 2011-09-14 2011-09-14 Dosiervorrichtung und verfahren zur dosierung mindestens eines fluids Active EP2756127B1 (fr)

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PCT/EP2011/065938 WO2013037407A1 (fr) 2011-09-14 2011-09-14 Dispositif de dosage et procédé pour doser au moins un fluide

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EP2756127B1 true EP2756127B1 (fr) 2021-10-27

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