EP4282810A1 - Vorrichtung und verfahren zur anreicherung einer flüssigkeit mit gas - Google Patents

Vorrichtung und verfahren zur anreicherung einer flüssigkeit mit gas Download PDF

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Publication number
EP4282810A1
EP4282810A1 EP22175550.7A EP22175550A EP4282810A1 EP 4282810 A1 EP4282810 A1 EP 4282810A1 EP 22175550 A EP22175550 A EP 22175550A EP 4282810 A1 EP4282810 A1 EP 4282810A1
Authority
EP
European Patent Office
Prior art keywords
gas
tank
liquid
reservoir
liquid tank
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.)
Pending
Application number
EP22175550.7A
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English (en)
French (fr)
Inventor
Hanno Lott
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.)
Brita Se
Original Assignee
Brita Se
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 Brita Se filed Critical Brita Se
Priority to EP22175550.7A priority Critical patent/EP4282810A1/de
Publication of EP4282810A1 publication Critical patent/EP4282810A1/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/0042—Details of specific parts of the dispensers
    • B67D1/0057—Carbonators
    • B67D1/0058—In-line carbonators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/236—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages
    • B01F23/2362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages for aerating or carbonating within receptacles or tanks, e.g. distribution machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/236—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages
    • B01F23/2363—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71745—Feed mechanisms characterised by the means for feeding the components to the mixer using pneumatic pressure, overpressure, gas or air pressure in a closed receptacle or circuit system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers

Definitions

  • the present invention refers to an apparatus for enriching a liquid with gas, e.g. for carbonation of a liquid, for example an apparatus for in-line carbonation of water. Further, the present invention refers to a method for dispensing gas enriched liquid.
  • the gas which is used to enrich the respective liquids is typically carbon dioxide (CO 2 ) which is introduced into a beverage container, usually a bottle, via a spout or opening of the container.
  • CO 2 carbon dioxide
  • EP 3 107 645 B1 discloses a system for in-line carbonation of water.
  • water is fed into a main inlet of a mixing venturi nozzle by means of a pump, wherein pressurized CO 2 is fed to a side inlet of the venturi nozzle.
  • pressurized CO 2 is fed to a side inlet of the venturi nozzle.
  • This allows dispensing larger amounts of gas enriched water as the pump is operated and pressurized CO 2 is fed to the venturi nozzle.
  • the operation of the pump requires an electrical power supply.
  • the present invention is based on the idea of using gas enriched liquid in an inline mixer to which gas and liquid are fed, while the pressure of the gas used for enriching (e.g. carbonation) is further used for feeding the liquid from a tank to the inline mixer unit.
  • This allows operation of the apparatus without requiring electronic components and without an electronic power source.
  • the apparatus has the benefit of being able to dispense a large amount of gas enriched liquid while being operable without connection to a water line. This makes it possible to provide the apparatus as a mobile or portable device. Still further, the relatively simple mechanical operation of the apparatus results in a high reliability.
  • the apparatus for enriching a liquid with gas may substantially comprise a refillable liquid tank, a gas supply port and a mixer unit.
  • the liquid tank may have a liquid outlet and may be releasably locked in the apparatus allowing replacement or refilling of the liquid tank.
  • the mixer unit may have a liquid inlet connectable with the liquid outlet, a mixer gas inlet connectable with a gas supply port and an gas enriched liquid outlet, e.g. with a tap, for dispensing gas enriched liquid.
  • the mixer unit may be an inline mixer for continuously mixing liquid and gas as they flow through the mixer unit.
  • the liquid tank may comprise a tank gas inlet connectable to the gas supply port.
  • the gas supply port is connectable to a gas tank, e.g. a CO 2 bottle.
  • the liquid inlet of the mixer unit is connected with the liquid outlet of the liquid tank via a line which may comprise a check valve and/or blocking means.
  • the mixer gas inlet may be connected with the gas supply port via a line which may comprise a pressure regulator, a control valve, a check valve and/or blocking means.
  • the tank gas inlet may be connected with the gas supply port via a line which may comprise a pressure regulator, a control valve, a check valve and/or blocking means.
  • the connections to the liquid tank may be made releasable permitting easy detachment of the liquid tank for refilling.
  • the gas supply port may permit easy attachment and detachment of a gas tank, like a gas bottle.
  • the apparatus further comprises a gas reservoir connectable to a tank gas outlet of the liquid tank.
  • the gas reservoir is a container suitable for temporarily storing pressurized gas.
  • the gas reservoir may comprise a reservoir gas inlet, a reservoir gas outlet and a reservoir space in communication with the reservoir gas inlet and the reservoir gas outlet.
  • the reservoir space may serve to receive pressurized gas fed from the liquid tank to the gas reservoir in order to store the pressurized gas and to permit further use of the pressurized gas at a later point in time, e.g. during a subsequent operation.
  • the gas reservoir may further comprise an internal compartment sealed from the reservoir space by an elastically deformable membrane. This may contribute in storing more pressurized gas in the gas reservoir.
  • the provision of the gas reservoir is based on the idea that feeding liquid from the liquid tank to the mixer unit by means of pressurized gas, results in the liquid tank being substantially filled with the pressurized gas as the liquid tank gets empty.
  • the pressurized gas may be simply dispensed into the ambient air when refilling the liquid tank.
  • the gas reservoir may be connected to the tank gas outlet via a valve and/or a blocking device to be selectively closed at least during dispensing gas enriched liquid and to be selectively opened at least at the beginning of a refilling step.
  • a refilling step may initially comprise unlocking of the liquid tank form the apparatus or its housing, thereby blocking or disconnecting the gas supply port from the tank gas inlet and permitting a fluid communication between the liquid tank and the gas reservoir.
  • the liquid tank may comprise a lid detachable from the liquid tank for refilling, wherein a fluid connection between the liquid tank and the gas reservoir is blocked when the lid is air-tight sealed to the liquid tank and when the lid is fully removed from the liquid tank, and wherein the fluid connection between the liquid tank and the gas reservoir is established when the lid is partially lifted from the liquid tank.
  • the liquid tank comprises an annular sealing surface for sealing abutment with an annular counter sealing surface of the lid wherein the tank gas outlet is arranged in the counter sealing surface.
  • the tank gas outlet is closed by the sealing surface of the liquid tank if the sealing surface of the liquid tank abuts the counter sealing surface of the lid and automatically opens if the counter sealing surface of the lid is lifted from the sealing surface of the liquid tank.
  • the lid may be attached to the liquid tank by means of a bayonet coupling permitting in one relative position of the lid relative to the liquid tank that the lid is slightly lifted from the liquid tank due to the internal pressure of the gas in the liquid tank, while still retaining the lid on the liquid tank. This may occur automatically when unlocking the liquid tank from the apparatus prior to exchanging or refilling the liquid tank.
  • the gas reservoir may comprise a reservoir gas outlet connectable to the tank gas inlet and/or to an optional further tank gas inlet.
  • the connection between the gas reservoir and the liquid tank is established automatically during or after locking the liquid tank in the apparatus.
  • the tank gas inlet and/or to an optional further tank gas inlet comprises a blocking valve which is opened if the sealing surface of the liquid tank abuts the counter sealing surface of the lid, thereby connecting the gas reservoir with the interior of the liquid tank.
  • a second additional or alternative option for using the pressurized gas retained in the gas reservoir is to feed the gas into the inline mixer unit for enriching the liquid.
  • This may include use of the pressurized gas for the inline gas enriching during dispensing gas enriched liquid and/or the use of the pressurized gas as a gas enriching booster in addition to the pressurized gas fed to the mixer unit from the gas supply port, i.e. for increasing the degree of gas enrichment.
  • the gas reservoir may comprises a reservoir gas outlet connectable to the mixer gas inlet and/or to a further mixer gas inlet.
  • the mixer gas inlet and/or the further mixer gas inlet may comprise a blocking valve operable by a user operated switch button.
  • a first a pressure regulator is provided between the gas supply port and the tank gas inlet, wherein a second a pressure regulator is provided between the gas supply port and the mixer gas inlet wherein the first pressure regulator is set to a higher pressure than the pressure of the second pressure regulator.
  • the first pressure regulator may be set to about 4.5 bar while the second pressure regulator may be set to about 4.0 bar.
  • the difference between the pressure to which the pressure regulators are set may be above 0.1 bar, e.g. at least 0.2 bar, preferably between 0.3 bar and 2.5 bar.
  • the pressure to which the first pressure regulator is set may be above 1.5 bar, e.g. at least 2.0 bar, preferably between 3.0 bar and 7.0 bar.
  • the apparatus may further comprise a filter provided in the liquid outlet or interposed between the liquid outlet and the mixer liquid inlet.
  • the filter is a replaceable filter cartridge for cleaning the liquid fed from the liquid tank to the inline mixer unit.
  • the apparatus may comprise a housing encasing, at least partially, the refillable liquid tank, the gas supply port, the mixer unit and/or the gas reservoir.
  • the housing may comprise latching means for releasably locking the liquid tank and/or a gas tank into the housing.
  • a tap for dispensing gas enriched liquid from the gas enriched liquid outlet and, optionally, a user operable switch button may be accessible from outside the housing to allow operation of the apparatus.
  • a user may dispense gas enriched liquid from the apparatus simply by opening the tap such that gas enriched liquid is dispensed until either the liquid tank or the gas tank runs empty.
  • An optional booster switch button may be used to increase the degree of gas enrichment by feeding additional pressurized gas and/or gas with higher pressure into the inline mixer unit.
  • a method for producing and dispensing gas enriched liquid comprises the steps of: providing liquid in a refillable liquid tank, providing gas in a gas tank, introducing gas from the gas tank into the liquid tank, thereby dispensing liquid from the liquid tank to an inline mixer unit provided downstream of the liquid tank, introducing gas from the gas tank into the mixer unit, thereby enriching the liquid with gas, and dispensing gas enriched liquid, e.g. by operating a dispensing tap.
  • the method further comprises the steps of: releasing gas from the liquid tank into a gas reservoir prior to refilling the liquid tank, and furthermore at least one of the following features i) and ii):
  • the step i) of releasing gas from the liquid tank into a gas reservoir prior to refilling the liquid tank may take place as a lid of the liquid tank is lifted from the liquid tank, thereby establishing a fluid connection between the liquid tank and the gas reservoir.
  • the present invention is generally described with respect to gas enrichment of a liquid
  • the liquid is water and the gas is CO 2 , i.e. the apparatus and method are suitable for dispensing and carbonation of water.
  • Figures 1 to 3 show components of an apparatus 1 for dispensing and enriching liquid, namely a liquid tank 2 ( Figures 1 and 2 ) and a gas reservoir 3 ( Figure 3 ).
  • the apparatus 1 further comprises a gas supply port 4 which is releasably connectable with a gas tank 5, like a CO 2 bottle, and an inline mixer unit 6 located downstream of the liquid tank 2 and the gas supply port 4.
  • Gas enriched liquid may be dispensed from a dispensing tap 7 located downstream of the inline mixer unit 6.
  • the components of the apparatus 1 may be fully or partially received in a housing (not shown).
  • the liquid tank 2 is a substantially cylindrical container with a removable lid 8 attached to the liquid tank 2 e.g. by bayonet coupling means.
  • An, e.g. centrally arranged, tank gas inlet 9 and an , e.g. laterally arranged, tank gas outlet 10 are provided in the lid 8.
  • the cylindrical container of the liquid tank 2 has an annular sealing surface 11 facing upwards in Figure 1
  • the lid 8 comprises an annular sealing counter-surface 12 arranged to abut the sealing surface 11 when the lid 8 is firmly attached to the cylindrical container of the liquid tank 2.
  • the tank gas outlet 10 is arranged opening into the annular sealing counter-surface 12 facing towards the sealing surface 11.
  • the tank gas outlet 10 is closed by abutment with the sealing surface 11 when the lid 8 is firmly attached to the cylindrical container of the liquid tank 2.
  • the tank gas outlet 10 is opened when the lid 8 is slightly lifted from the sealing surface 11 of the cylindrical container of the liquid tank 2.
  • the liquid tank 2 has at its lower end a tank liquid outlet 13.
  • An optional filter 14, e.g. a disk-shaped replaceable filter cartridge, may be located in the tank liquid outlet 13.
  • the gas reservoir 3 may have a substantially spherical outer configuration with a reservoir gas inlet 15 and a reservoir gas outlet 16.
  • a reservoir space 17 is defined in communication with the reservoir gas inlet 15 and the reservoir gas outlet 16.
  • the gas reservoir 3 further comprises an elastically deformable membrane 18 which is sealed to a shell 19 thereby defining an internal compartment within the reservoir 3.
  • the internal compartment is sealed from the reservoir space 17 but may receive pressurized gas by deformation of the membrane 18.
  • the membrane 18 and the shell 19 are held withing the gas reservoir 3 by a ring with support ribs such that gas may flow around the internal may be connected to the compartment between reservoir gas inlet 15 and reservoir gas outlet 16.
  • the reservoir gas inlet 15 may be connected to the tank gas outlet 10 via a line comprising a check valve 20.
  • the gas supply port 4 is connected to the gas tank 5 as well as to the liquid tank 2 and to the inline mixer unit 6.
  • At least one first pressure regulator 21 and a check valve 22 are arranged downstream of the gas supply port 4 in a gas line connectable with the tank gas inlet 9.
  • at least one second pressure regulator 23, a check valve 24 and a control valve 25 are arranged downstream of the gas supply port 4 in a gas line connectable with a mixer gas inlet 26 of the mixer unit 6.
  • the first pressure regulator 21 is set to a higher pressure, e.g. above 4.5 bar, than the pressure of the second pressure regulator 23, e.g. 4.0 bar.
  • the mixer unit 6 further comprises a mixer liquid inlet 27 connectable with the tank liquid outlet 13 or the filter 14 via a liquid line which may comprise a further check valve 28.
  • the liquid tank 2 is held, e.g. locked, in the apparatus 1 and the lid 8 is firmly attached to the cylindrical container of the liquid tank 2 such that the tank gas outlet 10 is closed.
  • the pressurized gas fed from the gas tank 5 via the gas supply port 4 to the liquid tank 2 feeds liquid from the liquid tank 2 to the mixer unit 6.
  • pressurized gas is fed from the gas tank 5 via the gas supply port 4 to the inline mixer unit 6 such that liquid from the liquid tank 2 and pressurized gas are mixed, i.e. the liquid is enriched with gas.
  • the liquid enriched with gas may be continuously dispensed from the tap 7 until the liquid tank 2 and/or the gas tank 5 run empty.
  • the line connecting the gas supply port 4 with the tank gas inlet 9 is disconnected or blocked and the liquid tank 2 is unlocked from the apparatus 1 or its housing, thereby allowing lifting of lid 8.
  • the pressure of the gas may elastically deform the membrane 18 bulging into the internal compartment and the shell 19.
  • Check valve 20 prevents that pressurized gas flows back towards the liquid tank 2 if the same is removed for refilling.
  • Figure 4 shows a configuration of the apparatus 1 according to a first embodiment of the invention.
  • the pressurized gas stored in the gas reservoir 3 may be fed into the liquid tank 2 via a line optionally comprising a check valve 29.
  • the gas may be introduced via the tank gas inlet 9 or via an additional gas inlet 30 which may open automatically by the pressure exerted when closing the lid 8 firmly onto the container of the liquid tank 2.
  • pressurized gas contained in the liquid tank 2 may be re-used for feeding liquid from a refilled liquid tank 2.
  • Figure 5 shows a configuration of the apparatus 1 according to a second embodiment of the invention.
  • This second embodiment has substantially the same configuration and operation as the above described first embodiment.
  • the reservoir gas outlet 16 is not connected to the tank gas inlet 9 or to an additional tank gas inlet 30, but instead connected to the inline mixer unit 6 via the mixer gas inlet 26 or an additional mixer gas inlet 31.
  • At least one further check valve 32 and/or a switch 33 may be provided in the line between the reservoir gas outlet 16 and the inline mixer unit 6.
  • the first pressure regulator 21 is set to a higher pressure than the pressure of the second pressure regulator 23
  • the gas fed from the gas reservoir 3 to the mixer unit 6 has a higher pressure than the gas directly fed from the gas supply port 4. This results in an increased gas enrichment of the liquid.
  • pressurized gas contained in the liquid tank 2 may be re-used for enriching liquid with gas.
  • the liquid is water and the gas is CO 2 .
  • An advantage common to both embodiments is that carbonated water may be continuously produced and dispensed from the apparatus 1 without using electrical energy or without having to connect the device to a water line.
  • the comparatively expensive gas used for carbonation and for feeding the water is used very sparingly, as the gas available in an empty liquid tank 2 is reused.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
EP22175550.7A 2022-05-25 2022-05-25 Vorrichtung und verfahren zur anreicherung einer flüssigkeit mit gas Pending EP4282810A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22175550.7A EP4282810A1 (de) 2022-05-25 2022-05-25 Vorrichtung und verfahren zur anreicherung einer flüssigkeit mit gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22175550.7A EP4282810A1 (de) 2022-05-25 2022-05-25 Vorrichtung und verfahren zur anreicherung einer flüssigkeit mit gas

Publications (1)

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EP4282810A1 true EP4282810A1 (de) 2023-11-29

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US572779A (en) * 1896-12-08 theurer
US3756576A (en) * 1970-02-26 1973-09-04 F Tremolada Apparatus for charging a liquid with gas
EP0000813B1 (de) 1977-07-29 1980-12-10 Sodastream Limited Tragbare Vorrichtung zum Herstellen von kohlensäurehaltigem Wasser
US5124088A (en) 1990-09-04 1992-06-23 Stumphauzer William C Process and apparatus for rapidly carbonating water
US6059270A (en) * 1997-11-06 2000-05-09 Kkb 02 Fluid Production Gmbh Liquid enriched with a gas, a method of enriching a liquid with a gas, and an apparatus for enriching a liquid with a gas
WO2015175244A2 (en) * 2014-05-15 2015-11-19 Ac Beverage, Inc. Chilled n2 infused beverage dispensing system and method to prepare and dispense a chilled n2 infused beverage
DE102015213843A1 (de) 2015-07-22 2017-01-26 Wmf Group Gmbh Vorrichtung zum Einbringen von Gasen in Flüssigkeiten
EP3107645B1 (de) 2014-02-19 2020-10-28 Luxembourg Patent Company S.A. Inline-karbonisierung von wasserbasierten getränken
US20210283558A1 (en) * 2016-08-05 2021-09-16 Cornelius, Inc. Apparatuses for Mixing Gases into Liquids

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US572779A (en) * 1896-12-08 theurer
US3756576A (en) * 1970-02-26 1973-09-04 F Tremolada Apparatus for charging a liquid with gas
EP0000813B1 (de) 1977-07-29 1980-12-10 Sodastream Limited Tragbare Vorrichtung zum Herstellen von kohlensäurehaltigem Wasser
US5124088A (en) 1990-09-04 1992-06-23 Stumphauzer William C Process and apparatus for rapidly carbonating water
US6059270A (en) * 1997-11-06 2000-05-09 Kkb 02 Fluid Production Gmbh Liquid enriched with a gas, a method of enriching a liquid with a gas, and an apparatus for enriching a liquid with a gas
EP3107645B1 (de) 2014-02-19 2020-10-28 Luxembourg Patent Company S.A. Inline-karbonisierung von wasserbasierten getränken
WO2015175244A2 (en) * 2014-05-15 2015-11-19 Ac Beverage, Inc. Chilled n2 infused beverage dispensing system and method to prepare and dispense a chilled n2 infused beverage
DE102015213843A1 (de) 2015-07-22 2017-01-26 Wmf Group Gmbh Vorrichtung zum Einbringen von Gasen in Flüssigkeiten
US20210283558A1 (en) * 2016-08-05 2021-09-16 Cornelius, Inc. Apparatuses for Mixing Gases into Liquids

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