| (11) | EP 3 551 571 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) | WATER DISPENSER FOR DISPENSING CARBONIZED WATER AND METHOD WASSERSPENDER ZUR AUSGABE VON KOHLENSÄUREHALTIGEM WASSER UND VERFAHREN DISTRIBUTEUR D'EAU PERMETTANT DE DISTRIBUER DE L'EAU GAZEUSE ET PROCÉDÉ CORRESPONDANT |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] Numerous types of water dispensers for dispensing carbonized water are available. Water dispensers may be stand-alone devices, or incorporated into an appliance such as a refrigerator. Most commercialized devices for carbonating water comprise a cooled and pressurized water storage reservoir, also referred to as a carbonating tank or saturator.
[0002] The water cooling reservoir is typically configured to hold a volume of water sufficient for multiple servings, to allow for dispensing multiple servings of cooled water one after the other. Furthermore, the water cooling reservoir is pressurized with carbon dioxide (CO2), such that CO2 is added to the water. Thus, a pressurized multiple servings volume of cooled and carbonized water is held in the storage reservoir.
[0003] As an alternative to pressurized cooling reservoirs, in-line carbonators are used. In such a dispenser, the CO2 is added to the water while it flows from the multiple servings cooled reservoir to the dispensing outlet. Thus, the cooled water does not need to be stored under pressure, which allows for simplified design of the reservoir.
[0004] It is submitted that, although prior art water dispensers are able to provide carbonized water, the carbonization level of the dispensed water is poor compared to bottled carbonized water. It is both difficult to dissolve sufficient CO2 in the water and to do this in a way that the CO2 is held for a prolonged period of time. This is in particular the case when using in-line carbonization devices.
[0005] Publication US3780198 discloses a system for in-line carbonation of beverages. The system comprises a blender, a cooler and a filler. A carbon dioxide diffusion-type injector is located in the line between the blender and the filler. The filler is configured for filling cans on an industrial scale. The system is not suitable for domestic use. The line further comprises a stabilizing chamber. In effect, the fluid flowing through the chamber is delayed in reaching the filler a sufficient length of time to permit the carbon dioxide to dissolve in the beverage ingredients before filling. The carbonated beverage ingredients are then passed through a valve and a strainer to the filler. The head space of the stabilizing chamber and the filler are also supplied with carbon dioxide.
[0006] Publication WO2005/003019 relates to a liquid dispensing system for a household refrigerator. The refrigerator encloses a pressurized gas bottle for carbon dioxide, that via a pipe and a check valve is connected to the mixing unit for mixing the gas with the water. The mixing unit is via a tube connected to a reaction tank that via an outlet tube is connected to a first dispensing valve. The reaction tank is also placed within a cooled space in the refrigerator and the pressure in the tank which is created by the low pressure pump is about 5 bar. Water and gas flow from the mixing unit to the reaction tank where the mixture is stored for some time before it is taken out from the system.
[0007] It is an object of the invention to provide a carbonized water dispenser in which the above mentioned drawbacks are eliminated altogether or occur in a greatly reduced extent. In particular it is an object of the first aspect of the invention to provide a carbonized water dispenser able to provide carbonized water with an increased CO2 content.
[0008] According to the present invention, this object is achieved by designing a carbonated water dispenser featuring a carbonized water conditioning chamber according to claim 1. Carbonated water dispensers of the type described herein provide improved levels of carbonation with the use of a conventional in-line carbonator.
[0009] A carbonized water dispensing device according to the invention comprises:
- a carbonized water dispensing outlet, for dispensing a single serve carbonized water volume into a beverage container;
- a cold water source;
- a CO2 source;
- a water line, which preferably is a chilled water line, the water line extending between the cold water source and the dispensing outlet;
- a water carbonation system comprising a carbonator, preferably an in-line carbonator provided in the water line, for adding CO2 from the CO2 source to the water flowing through the water line from the cold water source to the carbonized water dispensing outlet, the CO2 preferably being added at a water pressure in the range of 5-9 bar;
- preferably, an in-line flow compensator, provided in the water line and downstream of the in-line carbonator, for conditioning the flow of carbonized water;
- preferably, a water pump for pumping a single serve volume of chilled water under pressure, preferably a pressure in the range of 5 - 9 bar, through the water line and through the carbonator of the water carbonation system; and
- a user interface comprising a control device configured to receive a beverage dispensing order, and subsequently actuate the carbonized water dispensing device to dispense a single serve volume of carbonized water;
- a carbonized water conditioning chamber, which conditioning chamber is provided downstream of the carbonator and upstream of the carbonized water dispensing outlet, for receiving a mixture of carbonized water mixed with unresolved CO2, which conditioning chamber is dimensioned to hold a single serve of carbonized water with a headspace, and which carbonized water conditioning chamber is provided with:
- an outlet valve for in a closed condition enabling the carbonized water conditioning chamber to hold the single serve volume of carbonized water, and for in an open condition allowing the single serve volume of carbonized water to flow out of the carbonized water conditioning chamber and subsequently out of the carbonized water dispensing outlet into a beverage container;
- a gas outlet for in a closed condition preventing unresolved CO2 from escaping the conditioning chamber and thus enabling a pressure increase, preferably a pressure increase of up to 0,25 - 4 bar or more, in the conditioning chamber during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2, and for in an open condition allowing the pressure in the conditioning chamber to lower to atmospheric pressure or near atmospheric pressure, e.g. 0,1 bar (relative to the environmental pressure), prior to the single serve carbonized water volume flowing out of the conditioning chamber; and wherein the carbonized water dispensing device is configured to, upon receiving a beverage dispensing order, provide the empty carbonized water conditioning chamber with a single serve volume of carbonized water, and hold the single serve of carbonized water prior to dispensing the single serve volume of carbonized water.
[0010] According to the claimed invention, the carbonized water dispensing device is provided with an in-line carbonized water conditioning chamber, i.e. a conditioning chamber downstream of the carbonator and upstream of the carbonized water dispensing outlet, for receiving a single serve volume of carbonized water mixed with unresolved CO2.
[0011] According to the invention, the single serve volume of carbonated water is received in the conditioning chamber, is held under pressure in that conditioning chamber, which pressure is subsequently lowered to atmospheric or near atmospheric pressure, after which the single serve volume is dispensed. Thus, a carbonized water dispenser according to the invention, compared to prior art carbonized water dispensers, provides an even flow of carbonized water, the carbonized water having an increased CO2 content. It is furthermore submitted that the even, i.e. less turbulent, outflow of carbonized water also helps in maintaining the increased CO2 levels for a prolonged period of time.
[0012] Furthermore, it is submitted that due to the pressure increase in the carbonized water conditioning chamber, which pressure increase is caused by said chamber being filled with the single serve of carbonized water mixed with unresolved CO2, the turbulence of the flow of the mixture of carbonized water mixed with unresolved CO2 into the carbonized water conditioning chamber is reduced. Thus, the degassing of CO2 from the carbonized water is tempered.
[0013] Because the dispenser is able to provide beverages with a relatively high CO2 content, a carbonized water dispensing device according to the invention is in particular useful in providing soda beverages, more in particular for combining the single serve carbonized water volume with a syrup, since these types of drinks are typically associated with high CO2 content, i.e. compared to the CO2 content of carbonized water dispensed by known carbonized water dispensers.
[0014] The invention is advantageously used in an in-line carbonization device for dispensing predetermined single serve volumes of carbonized water. In an embodiment, the water is carbonized using an in-line carbonator and an in-line flow compensator, such that with each serving, only the volume of water required for a single serve, i.e. a metered single serve volume, is carbonized while being dispensed. Thus, there is no reservoir, or a carbonating tank or saturator, for storing a large volume of pre-carbonized water, i.e. water carbonized prior to a consumer providing a dispensing order.
[0015] A dispenser according to the invention is configured to provide a consumer with a predetermined volume of carbonized water. Thus, the invention is in particular suited for use in carbonized water dispenser in the office environment or at home, to provide a consumer with the beverage of his or her choice. The predetermined volume can be received in a beverage container, e.g. a glass or cup. In an embodiment, the dispenser is configured for also allowing a consumer to fill a bottle with carbonized water.
[0016] Depending on de the device, a single serve may comprise a volume of 100 ml for a small cup up to 1,1 litre for large cups. A dispenser can be configured for providing a predetermined volume, for example a single serve volume of 250 ml, or with a range of predetermined volumes, for example a range comprising a small volume of 200 ml up to a large volume of 1,2 litre. Also, in addition, a dispenser can be configured to fill a bottle, in which case the predetermined volume can be in the range of 0,250 litre, 0,5 litre and 1 litre. In an embodiment, the dispenser is configured to allow a consumer to specify the predetermined volume, for example by entering the desired volume via a user interface when providing the dispensing order.
[0017] In an embodiment, the conditioning chamber is dimensioned to receive a charge of carbonized water sufficient to allow a user to fill at a beverage container, e.g. a cup or glass, of average size. As such, the conditioning chamber may typically hold between 0,2 liter and 1,5 liter of carbonized water, preferably between 0,2 and 0,8 liter, most preferably about 0,25 liter of water.
[0018] In an embodiment, the dispenser is configured to provide 0,225 - 0,230 liter beverages with a high CO2 content. In this embodiment, the volume of the carbonized water conditioning chamber is about 0,250 litre and the dispenser is configured to retain a beverage volume of about 0,225 - 0,230 of carbonized water in that conditioning chamber, providing a head space of about 0,025 litre.
[0019] According to the invention, the mixture of the single serve volume of carbonized water and the unresolved CO2 flows into the carbonized conditioning chamber, which chamber is located downstream of the flow compensator and preferably directly downstream of an in-line flow compensator located in the water line downstream of the in-line carbonator and upstream of the conditioning chamber.
[0020] It is submitted that the carbonized water conditioning chamber is dimensioned such that it can hold a single serve of carbonized water with a headspace for holding the unresolved CO2. The conditioning chamber is furthermore dimensioned such that, during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2 into the chamber, a pressure increase, preferably a pressure increase of up to 1,25 - 4 bar or more, is achieved in the conditioning chamber.
[0021] In an embodiment, the carbonized water conditioning chamber is dimensioned such that when it holds a single serve volume of carbonized water, the headspace has a volume in the range of 5% - 50% of the single serve volume of carbonized water.
[0022] In an embodiment, the carbonized water conditioning chamber is an adaptable chamber, i.e. has a volume that can be adapted, for example has a moveable wall that allows for adapting the volume of the chamber. Such an adaptable carbonized water conditioning chamber allows for the volume of the carbonized water conditioning chamber to be adapted in dependency of the volume to be served, and thus allows for the dispenser to serve different single serve volumes, for example a small, a medium and a large volume serving, with a head space proportioned to said volumes, for example each with a head space volume of 20%.
[0023] In addition or as an alternative, a pressure source is provided for adding a gas, preferably CO2, into the carbonized water conditioning chamber, preferably during or after the filling of the conditioning chamber with the single serve volume of carbonized water, to allow for the chamber to hold different single serve volume with a similar pressure.
[0024] In addition or as an alternative, the in-line carbonator is configured to provide additional CO2 when a small single serve volume is dispensed, to compensate for the small volume of carbonized water and enable a sufficient increase in pressure in the carbonized water conditioning chamber during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2.
[0025] In an embodiment, the carbonized water dispensing device is configured to dispense beverages with different CO2 content, for example beverages with comparatively low CO2 content and more sparkling beverages with a high CO2 content. In such an embodiment, the device, more in particular the outlet valve of the carbonized water conditioning chamber, can be configured to retain a single serve volume of carbonized water in the carbonized water conditioning chamber to increase the CO2 content according to the invention and thus provide beverages with a high CO2 content, and a single serve volume of carbonized water to flow directly through the conditioning chamber, i.e. without any retention, to thus provide beverages with a comparatively low CO2 content. Also, when the dispensing device is configured to dispense flat water, i.e. water without added CO2, this water can also flow directly through the carbonized water conditioning chamber.
[0026] In an embodiment, the dispenser comprises an ozone device upstream of the carbonized water conditioning chamber, which ozone device is configured to add ozone to the water flowing into the carbonized water conditioning chamber, such that the ozone can destroy any germs or similar holding in the carbonized water conditioning chamber or downstream thereof. In a further embodiment, the carbonized water conditioning chamber, more in particular the outlet valve of the carbonized water conditioning chamber, is configured to retain the water provided with ozone for a prolonged period of time in the carbonized water conditioning chamber and thus enable the ozone to better destroy any germs or similar material in said chamber. In yet a further embodiment, the device is configured to flush the water with ozone from the carbonized water conditioning chamber and/or flush through said chamber after the water with ozone has been drained from the chamber.
[0027] In an embodiment, the cold water source is configured for providing for providing multiple servings, preferably at least five servings.
[0028] In an embodiment, the cold water source comprises a cooling reservoir having a volume of multiple servings.
[0029] In an embodiment, the cold water source comprises a water supply. This supply can consist of a simple municipal or well water feed. Preferably, the cold water source comprises an extension of the water line, which extension passes through a chiller configured to cool the water in the water line. In an embodiment, the chiller is provided in the form of a reservoir that comprises a volume of cold water, and the water line passes through said volume of cold water such that the water in the water line is cooled. In a further embodiment, the section of the water line comprising the in-line carbonator is located within the volume of cold water of the cold water reservoir.
[0030] In an embodiment, the chiller is provided in the form of a reservoir that comprises a volume of cold water and the carbonized water conditioning chamber is located at least partially within the reservoir. Thus the carbonized water conditioning chamber is cooled by the cold water source, more in particular is cooled by the cooling device of the cold water reservoir.
[0031] In an embodiment, the reservoir is encased in a jacket of isolation material. In a further embodiment, the reservoir is encased in a jacket of isolation material and the carbonized water conditioning chamber is received within the same jacket of isolation material. In such an embodiment, the outlet valve of the carbonized water conditioning chamber and the gas outlet of the carbonized water conditioning chamber are located outside the jacket of isolation material.
[0032] The cold water source also optionally comprises a pump to provide a consistent water pressure. As the pressure at a typical home or commercial water tap may vary from location to location or from time to time, providing a pump will ensure that the apparatus receives a consistent pressure no matter what the local supply pressure is. This same goal of providing a consistent supply pressure can be achieved by other known techniques without departing from the scope of the disclosure. For example, an elevated water reservoir could use gravity and appropriately sized water conduits to provide a consistent water supply pressure.
[0033] The incoming water pressure affects the flow and pressure through the remainder of the water line. Preferably, a pressure of 6,5 - 8,5 bar is provided to achieve an optimal flow rate and carbonation.
[0034] The CO2 (carbon dioxide) source can be embodied by any known way for supplying a gas. A commercially available CO2 canister is preferably used. The CO2 source would typically be connected through a regulator, which provides a controlled supply pressure to the in-line carbonator.
[0035] The CO2 is provided at a pressure between 3 bar and 9 bar. Preferably, the carbon dioxide pressure provided at the in-line carbonator at a pressure substantially similar to the water pressure provided at the in-line carbonator.
[0036] The in-line carbonator, or solubilizer, can be an in-line carbonator known from the prior art, for example an in-line carbonator known from US2011/0268845.
[0037] In an alternative embodiment, the carbonized water dispensing device is provided with an in-line carbonator for the solubilization of CO2 (carbon dioxide) in water, the inline carbonator comprising:
a tubular conduit disposed about a longitudinal axis, extending from an input end to and output end, and defining a fluid flow path from the input end to the output end;
an inlet manifold comprising a first inlet for water, a second inlet for carbon dioxide, and an outlet in fluid communication with the input end of the conduit;
wherein the conduit comprises a first treatment trajectory directly followed by a conditioning trajectory directly followed by a second treatment trajectory, such that the water subsequently flows from the first treatment trajectory into the conditioning trajectory into the second treatment trajectory;
wherein each treatment trajectory comprises:
a helical dispersion element disposed in the conduit and having an axis substantially aligned with the longitudinal axis of the conduit;
a passive accelerator located immediately downstream of the helical dispersion element, wherein the passive accelerator comprises a restriction portion of the conduit having a reduced cross sectional area relative to portions of the conduit immediately upstream and downstream of the restriction portion;
a rigid impact surface immediately downstream of the passive accelerator, which rigid impact surface is disposed substantially perpendicular to the longitudinal axis of the conduit; and
wherein the conditioning trajectory comprises:
a conditioning conduit extending between the first and second treatment trajectories, the conditioning conduit having an axis substantially aligned with the longitudinal axis of the conduit.
[0038] In an embodiment, the water carbonation system comprises an in-line flow compensator, provided in the water line downstream of the carbonator, preferably the in-line carbonator, and directly upstream of the carbonized water conditioning chamber. The in-line flow compensator, can be an in-line flow compensator known from the prior art, for example in-line flow compensator known from US2014239519.
[0039] In an embodiment, the carbonized water dispensing device is configured to mix the carbonized water with an ingredient, e.g. syrup, after the carbonized water has been held in the carbonized water conditioning chamber, preferably is incorporated in a prior art dispenser device configured for mixing carbonated water with syrup for example known from WO2016081477 or WO2016081480.
[0040] In an embodiment, the dispenser comprises a seat for holding an ingredient cartridge downstream of the outlet valve of the carbonized water conditioning chamber and in the flow path of the carbonized water dispensed via said outlet valve. In addition or as an alternative, the dispenser comprises an ingredient outlet, for example a nozzle connected to an ingredient reservoir, for injecting ingredient into the flow of carbonized water and/or into the beverage container in which the single serve volume of carbonized water is dispensed.
[0041] The user interface can be embodied by any known user command input device for providing a dispenser with instructions to serve a metered volume of water, e.g. may comprise a mechanical device such as lever or tab, or an electronic interface linked to a pump and/or valves, etc. In an embodiment, the dispenser is configured to receive instructions via the internet or Wi-Fi, for example from an app on a smart phone. The user interface comprises a control device configured to receive a beverage dispensing order, and to subsequently actuate the carbonized water dispensing device to dispense a single serve volume of carbonized water. In an embodiment, the user interface allows for the user to choose between different size beverages, each having a for example a small, a medium and a large volume serving, and/or to adjust the single serve volume, for example when the single serve carbonized water volume is mixed with a predetermined volume of ingredient, to allow for a strong or a weak mixture of single serve volume carbonized water and ingredient.
[0042] In an embodiment, the carbonized water conditioning chamber is furthermore provided with a gas inlet connected to a pressurized gas source, preferably a CO2 gas source, preferably the gas source providing CO2 to the in-line carbonator, for providing a pressure in the conditioning chamber, preferably a pressure in the range of 1 - 4 bar, more preferably a pressure in the range of 2 - 3 bar, to urge the single serve of carbonized water volume out of the conditioning chamber, preferably providing the single serve carbonized water volume into a beverage container with an even flow rate.
[0043] Such an embodiment allows for a more accurate control of the pressure in the carbonized water conditioning chamber, and thus to adjust for fluctuations between servings in the unresolved CO2 mixed with the carbonized water into the carbonized water conditioning chamber, for example due to difference in water temperature and/or pressure provided by the CO2 source, etc.
[0044] Also, such an embodiment allows for holding different single serve volumes, e.g. a small, a medium and a large volume serving with similar pressures, prior to dispensing the single serve volume of carbonized water.
[0045] Preferably the gas source is a CO2 gas to increase the CO2 content in the headspace. In a particular advantageous embodiment, the CO2 source that is provided for carbonization of the water is also used for providing the additional pressure, i.e. in addition to the pressure generated by the unresolved CO2 that flows into the chamber with the carbonized water, in the conditioning chamber, preferably a pressure in the range of 1 - 4 bar.
[0046] In an embodiment, the gas outlet is configured to, or a further gas outlet is provided to, during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2, enable CO2 to escape the conditioning chamber when a predetermined pressure is reached, which predetermined pressure is preferably in the range of 1,25 - 4 bar, to limit the maximum pressure in the conditioning chamber.
[0047] Such a gas outlet can also be used in combination with a gas inlet, as mentioned above, for providing a pressure in the conditioning chamber to urge the single serve of carbonized water volume out of the conditioning chamber. Thus, a gas, for example air or CO2, can be fed into the carbonized water conditioning chamber, and the gas outlet serves as an overflow valve to keep the pressure in said chamber at a predetermined maximum.
[0048] In an embodiment, the carbonized water conditioning chamber is provided with a gas inlet configured to allow a gas, for example ambient air CO2, to flow into the carbonized water conditioning chamber while the outlet valve is open and the carbonized water flows out of the carbonized water conditioning chamber. Thus, the pressure in the carbonized water conditioning chamber is substantially similar to the ambient pressure contributes to an even outflow of carbonated water from the carbonized water conditioning chamber.
[0049] In an embodiment, the gas inlet is provided with a filter, for example a HEPA filter, to prevent unwanted materials from entering the carbonized water conditioning chamber with the flow of gas. This is in particular beneficial when the gas inlet is configured to allow ambient air to flow into the carbonized water conditioning chamber, for example while the carbonized water flows out of the carbonized water conditioning chamber.
[0050] In an embodiment, the dispenser is configured to provide, i.e. the carbonized water conditioning chamber is dimensioned, different single serve volumes, for example a small, a medium and a large volume serving. Preferably, the flow of the mixture of the small volume single serve of carbonized water and the unresolved CO2 into the carbonized water conditioning chamber provides a pressure increase sufficient to reach the predetermined pressure. Thus, the different single serve volumes can all be held in the carbonized water conditioning chamber without the need of adding additional pressure, for example by adding additional CO2 from a CO2 source.
[0051] In an embodiment, the device is configured to, after filling the conditioning chamber with the single serve carbonated water volume and prior to allowing the single serve carbonized water volume to flow out of the conditioning chamber, hold the single serve carbonated water volume for a retention period in the range of 0,5 - 8 seconds, preferably in the range of 0,5-4 seconds, for example for 2 seconds, the retention period including the pressure reduction in the conditioning chamber to atmospheric pressure or near atmospheric pressure.
[0052] Thus, the mixture of carbonized water mixed with unresolved CO2 is allowed to settle and lower in pressure, which allows for a more even flow out of the conditioning chamber.
[0053] Furthermore, when the carbonized water is held under pressure with CO2 in the headspace, additional CO2 is allowed to dissolve into the carbonized water, and thus the CO2 content of the water may increase.
[0054] A typical single serve volume of carbonized water is preferably held for a period in the range of 0,2 and 5 seconds. Preferably, in a device according to the invention, a single serve volume of carbonized water is held for a period in the range of 0,2 and 5 seconds, preferably in the range of 2 and 4 seconds, for example is held for 3 seconds, after which the pressure is lowered to an atmospheric or near atmospheric pressure, allowing the single serve volume of carbonized water to flow from the conditioning chamber without a serious pressure drop.
[0055] It is furthermore submitted that the amount of CO2 dispersed into the carbonised water can be controlled by controlling the input pressure of the CO2. This can for example be achieved by providing the CO2 source with a controlled valve, preferably a valve controlled by the control device of the user interface. Thus the valve can be used to throttle the flow of CO2. In an alternative embodiment, the valve is controlled to provide a series of short CO2 injections. Thus, the injected CO2 volume can be controlled by controlling the length of the injections, the time period between the injections, and the CO2 pressure of the injections. It is submitted that when the length of the injections and/or the time period between the injections is/are used to control the amount of CO2 injected in to the flow of water, simple open/closed valve can be used instead of a more complicated throttle valve.
[0056] In an embodiment, the device is configured to provide water without CO2. In such an embodiment, the CO2 source can be provided with a valve that can be closed to prevent CO2 from being injected into the water flow. Also, in such an embodiment, the water carbonation system can be configured to allow water to pass the water conditioning chamber directly, i.e. without being held for a period of time, to thus promote any CO2 present in the water to escape the water by providing a more turbulent flow and/or an instant pressure drop.
[0057] It has been found that a time frame of 1-4 seconds, for holding the single serve volume of carbonized water in the conditioning chamber, in combination with a single serve volume of 0,25 liter at a pressure of 2,5 bar is optimal. Subsequently, the pressure is dropped to atmospheric pressure or near atmospheric pressure over a time period of 1 - 3 seconds.
[0058] Furthermore, during the retention of the single serve volume of carbonized water in the conditioning chamber, the pressure in the chamber is reduced to an atmospheric or near atmospheric level. This drop in pressure preferably is a controlled pressure drop, i.e. is not an instantaneous pressure drop but involves a gradual reduction of pressure over a certain time frame, preferably said time frame being in the range of 1,5 - 3 seconds, for example being 1,5 seconds. In an embodiment, the time frame of the pressure drop matches with the period of time the single serve carbonized water volume is held in the conditioning chamber.
[0059] Thus, in an embodiment, three time periods can be distinguished with respect to the pressure inside the conditioning chamber. In a first time period, the pressure in the conditioning chamber increases due to the inflow of the single serve volume of carbonized water mixed with unresolved CO2, and optionally due to additional CO2 being injected into the conditioning chamber from the CO2 source directly, up to a certain pressure level, for example of 2,5 bar. During the second time period the single serve is held at a substantially continuous pressure, for example at a pressure level of 2,5 bar. A degassing outlet can be used to keep the pressure inside the conditioning chamber at this level, and prevent an increase of the pressure due to degassing of the carbonised water held in the conditioning chamber. Subsequently, in the third time period, the pressure is lowered in a controlled fashion, for example over a period of 2 seconds, to atmospheric pressure or near atmospheric pressure, after which third time period the single serve volume of carbonized water is allowed to flow out of the conditioning chamber.
[0060] The invention thus provides an in-line water carbonation system, the system comprising a chilled water line, CO2 source, an in-line carbonator, an in-line flow compensator and a carbonized water conditioning chamber. When a dispensing order is given, a single serve volume water is passed through the in-line water carbonation system to provide a single serve volume of carbonized water.
[0061] In an embodiment of a carbonized water dispensing device according to the invention, the water carbonation system comprises an in-line carbonator for the solubilization of CO2 (carbon dioxide) in water, the in-line carbonator comprising:
a tubular conduit disposed about a longitudinal axis, extending from an input end to and output end, and defining a fluid flow path from the input end to the output end;
an inlet manifold comprising a first inlet for water, a second inlet for carbon dioxide, and an outlet in fluid communication with the input end of the conduit;
wherein the conduit comprises a first treatment trajectory followed by a conditioning trajectory followed by a second treatment trajectory;
wherein each treatment trajectory comprises:
a helical dispersion element disposed in the conduit and having an axis substantially aligned with the longitudinal axis of the conduit;
a passive accelerator located immediately downstream of the helical dispersion element, wherein the passive accelerator comprises a restriction portion of the conduit having a reduced cross sectional area relative to portions of the conduit immediately upstream and downstream of the restriction portion;
a rigid impact surface immediately downstream of the passive accelerator, which rigid impact surface is disposed substantially perpendicular to the longitudinal axis of the conduit; and
wherein the conditioning trajectory comprises:
a conditioning conduit extending between the first and second treatment trajectories, the conditioning conduit having an axis substantially aligned with the longitudinal axis of the conduit.
[0062] In an embodiment of a carbonized water dispensing device according to the invention, the dispensing device is configured, preferably comprises a seat, for holding an ingredient cartridge downstream of the outlet valve of the carbonized water conditioning chamber and in the flow path of the carbonized water dispensed via said outlet valve, to mix the carbonized water with an ingredient, e.g. syrup, after the carbonized water has been held in the carbonized water conditioning chamber.
[0063] The invention furthermore provides a method according to claim 15 for providing a single serve of carbonized water, preferably using a carbonized water dispensing device according to one or more of the claims 1-14, wherein the method comprises the steps:
- starting the dispensing process, e.g. by a consumer providing a user interface with a beverage dispensing order, the user interface subsequently actuating a carbonized water dispensing device to dispense a single serve volume of carbonized water;
- passing a single serve water volume, preferably at a pressure of 5-9 bar, through an in-line carbonator and through a flow compensator, thus creating a mixture of carbonized water mixed with unresolved CO2;
- allowing the single serve volume of carbonized water to flow into the carbonized water conditioning chamber and thus increasing the pressure in the carbonized water conditioning chamber, preferably up to a pressure of 1,25 - 4 bar, for example about 1,5 bar;
- optionally, keeping the pressure in the conditioning chamber below a predetermined pressure, preferably a predetermined pressure in the range of 1,25 - 4 bar;
- optionally, after filling the conditioning chamber with the single serve carbonated water volume, hold the single serve carbonated water volume for a period in the range of 1 - 4 seconds, preferably in the range of 2 - 3 seconds, for example for 3 seconds;
- reducing the pressure in the conditioning chamber to substantially atmospheric pressure, preferably after the single serve carbonized water volume has entered the conditioning chamber;
- allowing the single serve water volume to flow out of the conditioning chamber, and via the dispensing outlet into a beverage container;
- optionally: stimulating the single serve water volume to flow out of the conditioning chamber by providing a pressure slightly above atmospheric pressure, preferably by allowing pressurized CO2 to flow into the conditioning chamber, and thus preferably provide an even flow rate.
[0064] Furthermore is provided an apparatus for the solubilization of carbon dioxide in water, more in particular an in-line carbonator, for use in a carbonized water dispenser as disclosed above, such an apparatus for the solubilization of carbon dioxide in water comprising:
a tubular conduit disposed about a longitudinal axis, extending from an input end to and output end, and defining a fluid flow path from the input end to the output end;
an inlet manifold comprising a first inlet for water, a second inlet for carbon dioxide, and an outlet in fluid communication with the input end of the conduit;
wherein the conduit comprises a first treatment trajectory directly followed by a conditioning trajectory directly followed by a second treatment trajectory, such that the water subsequently flows from the first treatment trajectory into the conditioning trajectory into the second treatment trajectory;
wherein each treatment trajectory comprises:
a helical dispersion element disposed in the conduit and having an axis substantially aligned with the longitudinal axis of the conduit;
a passive accelerator located immediately downstream of the helical dispersion element, wherein the passive accelerator comprises a restriction portion of the conduit having a reduced cross sectional area relative to portions of the conduit immediately upstream and downstream of the restriction portion;
a rigid impact surface immediately downstream of the passive accelerator, which rigid impact surface is disposed substantially perpendicular to the longitudinal axis of the conduit; and
wherein the conditioning trajectory comprises:
a conditioning conduit extending between the first and second treatment trajectories, the conditioning conduit having an axis substantially aligned with the longitudinal axis of the conduit.
[0065] Thus, with such a carbonator the treatment trajectories are repeated without adding more CO2 between them, but instead allow for settling of the CO2 prior to again subjecting the mixture of carbonized water mixed with unresolved CO2 to a second treatment trajectory, said treatment trajectory starting with the mixture passing through a dispersion element arranged within the conduit to create a dispersed flow. It has been found that this configuration provides an increased solubilization of carbon dioxide in water comprising.
[0066] In an embodiment of a carbonator, the rigid impact surface is provided in the form of a rib member that bridges the conduit in a direction substantially perpendicular of the longitudinal axis of the conduit, such that a part of the rib member fills a central portion of the conduit and the rib member defines two peripheral flow paths located outside of the central portion of the conduit; and
wherein the tubular conduit, helical dispersion elements, and restriction portions are substantially aligned along the central longitudinal axis of the conduit, and the peripheral flow paths are offset from the central longitudinal axis of the conduit in a direction transverse to the central longitudinal axis of the conduit.
[0067] The rib member extends across the conduit, and therefore across the flow path of the mixture of carbonized water and CO2. The rib member thus splits the flow path into two parallel flow paths, which are located on opposite sides of the rib member. Furthermore, the rib member extends in a direction parallel to the flow path, and thus guides the two flows of carbonized water and unresolved CO2, which provides a more laminar flow compared to prior art impact surfaces. The rib member thus combines a more laminar flow with an increase in pressure, and thus promotes the solubilization of CO2 in the water.
[0068] The combination of an impact surface at the central portion of the conduit and two peripheral flow paths located outside of the central portion of the conduit combines a pressure increase in the carbonized water and CO2 mixture, and thus an increase in the CO2 content of the carbonized water.
[0069] It is submitted that the feature that the rigid impact surface is provided in the form of a rib member that bridges the conduit in a direction substantially perpendicular of the longitudinal axis of the conduit, can also be provided in an in-line carbonator comprising a single conditioning trajectory.
[0070] In an embodiment of a carbonator, the restriction portion of the passive accelerators has an energy loss coefficient in the range of 0,1 to 0,44.
[0071] In an embodiment of a carbonator, the impact surface is spaced from the restriction, preferably such that the helical dispersion element extends along substantially half of the treatment trajectory and the passive accelerator extends along substantially half of the treatment trajectory.
[0072] In an embodiment of a carbonator, the conditioning trajectory comprises an expanding section, i.e. having in an increase in diameter in the flow direction, followed by a section having a continuous diameter, wherein the first and second section each extend along substantially half of the conditioning trajectory.
[0073] In an embodiment of a carbonator, the conditioning trajectory and the treatment trajectories each have a substantially similar length.
[0074] In an embodiment of a carbonator, the helical dispersion element is located downstream of the inlet and upstream of the rigid impact surface and are configured to mix the carbon dioxide and water to create an annularly-dispersed flow in the conduit.
[0075] The passive accelerator is configured to accelerate the annular-dispersed flow of carbon dioxide and water and direct the accelerated flow of carbon dioxide and water to collide with the rigid surface, thereby creating a pressure sufficient to solubilize the carbon dioxide into the water.
[0076] In an embodiment of a carbonized water dispensing device according to the invention, the water carbonation system comprises an in-line carbonator for the solubilization of CO2 (carbon dioxide) in water, the in-line carbonator comprising:
a tubular conduit disposed about a longitudinal axis, extending from an input end to and
output end, and defining a fluid flow path from the input end to the output end;
an inlet manifold comprising a first inlet for water, a second inlet for carbon dioxide, and an outlet in fluid communication with the input end of the conduit;
wherein the conduit comprises a first treatment trajectory followed by a conditioning trajectory followed by a second treatment trajectory;
wherein each treatment trajectory comprises:
a helical dispersion element disposed in the conduit and having an axis substantially aligned with the longitudinal axis of the conduit;
a passive accelerator located immediately downstream of the helical dispersion element, wherein the passive accelerator comprises a restriction portion of the conduit having a reduced cross sectional area relative to portions of the conduit immediately upstream and downstream of the restriction portion;
a rigid impact surface immediately downstream of the passive accelerator, which rigid impact surface is disposed substantially perpendicular to the longitudinal axis of the conduit; and
wherein the conditioning trajectory comprises:
a conditioning conduit extending between the first and second treatment trajectories, the conditioning conduit having a U-shaped axis, and wherein the first treatment trajectory is located adjacent the second treatment trajectory.
[0077] As was already set out above, with such a carbonator the treatment trajectories are repeated without adding more CO2 between them, i.e. CO2 is only added at the inlet manifold, and thus allows for settling of the CO2 prior to again subjecting the mixture of carbonized water mixed with unresolved CO2 to a second treatment trajectory.
[0078] Advantageous embodiments of the water dispenser according to the invention and the method according to the invention are disclosed in the subclaims and in the description, in which the invention is further illustrated and elucidated on the basis of a number of exemplary embodiments, of which some are shown in the schematic drawing.
[0079] In the drawings:
Fig. 1 is a schematic drawing of an exemplary embodiment of a carbonized water dispensing device according to the invention; and
Fig. 2 shows a detailed side view in cross section of an exemplary embodiment of an in-line carbonator.
[0080] Fig. 1 shows a schematic drawing of an exemplary embodiment of a carbonized water dispensing device 1 according to the invention. It is noted that the diagram shows the dispensing device partially in cross section and that components have been simplified for explanatory purpose.
[0081] According to the present invention, the carbonated water dispenser 1 features an in-line conditioning chamber 2. The carbonized water dispensing device 1 further comprises a cold water source 3, a CO2 source 4, a carbonized water dispensing outlet 5 and a water line 6 extending between the cold water source 3 and the dispensing outlet 5. The water line 6 comprises an in-line carbonator 7, an in-line flow compensator 8, and a user interface 9.
[0082] In the exemplary embodiment shown, the carbonized water dispensing device 1 is configured to mix the carbonized water with an ingredient, e.g. syrup, after the carbonized water has been held in the carbonized water conditioning chamber 2. Therefore, the dispensing device 1 comprises a seat 12 for holding an ingredient cartridge 13 downstream of the carbonized water conditioning chamber 2 and in the flow path of the carbonized water dispensed from the carbonized water conditioning chamber 2, to mix the carbonized water with an ingredient, e.g. syrup, after the carbonized water has been held in the carbonized water conditioning chamber.
[0083] In the embodiment shown, the carbonized water dispensing outlet 5 is configured for dispensing a single serve carbonized water volume into a beverage container. The dispensing device 1 furthermore comprises a beverage container support surface 10, which in Fig. 1 supports a beverage container in the form of a cup 11 below the carbonized water dispensing outlet for receiving a single serve carbonized water volume, in the embodiment shown mixed with an ingredient, preferably a syrup.
[0084] The cold water source 3 is configured for providing multiple servings, preferably at least five servings.
[0085] In the embodiment shown, the cold water source 3 comprises a water supply 14 that consists of a simple municipal or well water feed. The cold water source 3 furthermore comprises an extension of the water line 6, which extension passes through a chiller configured to cool the water in the water line. In the embodiment shown, the chiller is provided in the form of a reservoir 15 that comprises a volume of cold water. The water line 6 passes through said volume of cold water, in the embodiment shown in a spiral configuration to maximize the cooling effect, such that the water line, and thus the water in the water line is cooled.
[0086] In an alternative embodiment, the cold water source 3 comprises a cooling reservoir having a volume of multiple servings. This reservoir could in turn be connected to a simple municipal or well water feed to keep the reservoir level constant. It is noted that the water held in the reservoir is to be carbonated after a consumer has entered a dispensing instruction into the user interface. Furthermore, from the reservoir single serve volumes are dispensed into the water line each time a consumer has entered a dispensing instruction into the user interface.
[0087] Furthermore, in the embodiment shown, the section of the water line 6 comprising the in-line carbonator 7 is located within the volume of cold water of the cold water reservoir 15, such that water and CO2 are cooled while being mixed.
[0088] In a preferred embodiment, the cold water source also comprises a pump to provide a consistent water pressure. As the pressure at a typical home or commercial water tap may vary from location to location or from time to time, providing a pump will ensure that the apparatus receives a consistent pressure no matter what the local supply pressure is. Such a water pump is configured to pump a single serve volume of carbonized water under pressure, preferably a pressure through the water line and through the carbonized water dispensing outlet.
[0089] The CO2 source 4 is connected to the in-line carbonator 7 and to the carbonized water conditioning chamber 2 to provide each of them with CO2. The CO2 source 4 can be embodied by any known way for supplying a gas. A commercially available CO2 canister is preferably used. The CO2 source would typically be connected through a regulator, which provides a controlled supply pressure to the in-line carbonator.
[0090] The in-line carbonator 7 is configured for adding CO2 to the water provided by the cold water source 3. The in-line carbonator, or solubilizer, can be an in-line carbonator known from the prior art. In Fig. 1 the in-line carbonator is schematically depicted. Preferably, the in-line carbonator is configured as the in-line carbonator shown in Fig.2, which will be discussed in more detail further below.
[0091] The in-line carbonator 7 is provided in the water line 6, and is connected to the CO2 source 4, for adding CO2 from the CO2 source to the water flowing through the water line from the water cooling reservoir to the carbonized water dispensing outlet.
[0092] The in-line flow compensator 8 is provided in the water line 6, downstream of the in-line carbonator 7, for conditioning the mixture of carbonized water mixed with unresolved CO2 from the in-line flow compensator.
[0093] According to the invention, the carbonized water dispenser 1 comprises the carbonized water conditioning chamber 2. The conditioning chamber 2 is provided downstream of the flow compensator 8 and upstream of the carbonized water dispensing outlet 5, for receiving a mixture of carbonized water mixed with unresolved CO2 from the in-line flow compensator 8.
[0094] The carbonized water conditioning chamber 2 is provided with an outlet valve 17 and a gas outlet 18.
[0095] The outlet valve 17 is configured for, in a closed condition, enabling the carbonized water conditioning chamber 2 to hold the single serve volume of carbonized water, and for, in an open condition, allowing the single serve volume of carbonized water to flow out of the carbonized water conditioning chamber 2 and subsequently out of the carbonized water dispensing outlet into the beverage container 11.
[0096] The gas outlet 18 is configured for, in a closed condition, preventing unresolved CO2, which enters the conditioning chamber in combination with the single serve volume of carbonized water, from escaping the conditioning chamber. Thus, the unresolved CO2 is retained in the conditioning chamber while the single serve volume of carbonized water is received, which results in a pressure increase in the chamber. Preferably, the gas outlet thus enables a pressure increase of up to 1,25 - 4 bar or more in the conditioning chamber during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2.
[0097] The gas outlet 18 is furthermore configured for, in an open condition, allowing unresolved CO2 to escape the conditioning chamber, and thus for the pressure in the conditioning chamber 2 to lower to atmospheric pressure or near atmospheric pressure, prior to the single serve carbonized water volume flowing out of the conditioning chamber.
[0098] According to the invention, the conditioning chamber 2 is dimensioned to hold a single serve of carbonized water with a headspace. Furthermore, the carbonized water dispensing device is configured to, upon receiving a beverage dispensing order, provide the empty carbonized water conditioning chamber with a single serve volume of carbonized water, and hold the single serve of carbonized water prior to dispensing the single serve volume of carbonized water. Once the single serve volume of carbonized water is drained from the conditioning chamber, the conditioning chamber remains empty until a new beverage dispensing order is received and a new beverage is dispensed.
[0099] The user interface 9 comprising a control device 19 configured to receive a beverage dispensing order, and subsequently actuate the carbonized water dispensing device to dispense a single serve volume of carbonized water. In the embodiment shown, the interface 9 is provided in the form of an electronic interface, more in particular an interface comprising a push button that allows a consumer to actuate the dispenser and thus dispense a single serve volume of carbonized water.
[0100] In the embodiment shown, the user interface is connected to a valve 16, which in an open condition allows water to flow from the water supply 14 into the water line 6, to the CO2 source 4, for providing the carbonator with CO2, to the outlet valve 17 for allowing the single serve volume of carbonized water to flow out of the carbonized water conditioning chamber after it has been held, and to the gas outlet 18 to allow the pressure in the conditioning chamber to lower to atmospheric pressure or near atmospheric pressure prior to the single serve carbonized water volume flowing out of the conditioning chamber.
[0101] Fig. 2 shows a detailed side view in cross section of the in-line carbonator 7. The in-line carbonator, or apparatus for the solubilization of carbon dioxide in water, comprises a tubular conduit 51 disposed about a longitudinal axis, extending from an input end 52 to and output end 53, and defining a fluid flow path from the input end to the output end.
[0102] The in-line carbonator further comprises an inlet manifold 54 comprising a first inlet for water 55, a second inlet 56 for carbon dioxide, and an outlet 57 in fluid communication with the input end 51 of the tubular conduit 50.
[0103] The conduit 50 comprises a first treatment trajectory 58 followed by a conditioning trajectory 59 followed by a second treatment trajectory 60. According to the invention, each treatment trajectory comprises a helical dispersion element 61, a passive accelerator 62, and a rigid impact surface 63.
[0104] The helical dispersion element 61 is disposed in the conduit 50 and having an axis substantially aligned with the longitudinal axis of the conduit.
[0105] The passive accelerator 62 is located immediately downstream of the helical dispersion element 61. The passive accelerator 62 comprises a restriction portion of the conduit 50 having a reduced cross sectional area relative to portions of the conduit immediately upstream and downstream of the restriction portion.
[0106] The rigid impact surface 63 is provided immediately downstream of the passive accelerator 62. The rigid impact surface 63 is disposed substantially perpendicular to the longitudinal axis of the conduit 50.
[0107] The conditioning trajectory 59 comprises a conditioning conduit extending between the first treatment trajectory 58 and the second treatment trajectory 60. The conditioning conduit has an axis substantially aligned with the longitudinal axis of the conduit.
[0108] The carbonized water dispensing device 1 is configured for providing a single serve of carbonized water.
[0109] When a consumer provides the user interface 9 with a beverage dispensing order, thus starting the dispensing process, the user interface subsequently actuates the carbonized water dispensing device 1 to dispense a single serve volume of carbonized water. Thus, a single serve water volume is passed through the in-line carbonator 7 and through the in-line flow compensator 8, thus creating a mixture of carbonized water mixed with unresolved CO2.
[0110] In the particular embodiment shown, the solubilization of carbon dioxide in water is achieved by providing the in-line carbonator 7 with water and CO2. The water and CO2 are mixed and create an annular-dispersed flow in the helical dispersion element 61. Subsequently, the mixture of carbonized water mixed with unresolved CO2 is accelerated in the passive accelerator 62, after which the mixture of carbonized water mixed with unresolved CO2 is directed to collide with the rigid impact surface 63, thereby creating a pressure sufficient to solubilize the carbon dioxide into the water.
[0111] The mixture of carbonized water mixed with unresolved CO2 is than passed through a conditioning conduit of the conditioning trajectory 59, after which an annular-dispersed flow is created in the second helical dispersion element. The mixture of carbonized water mixed with unresolved CO2 is accelerated in the second accelerator, and is directed to collide with the rigid impact surface 63, thereby creating a pressure sufficient to solubilize the carbon dioxide into the water.
[0112] The mixture of carbonized water with unresolved CO2 is subsequently passed through the in-line flow compensator 8 and is collected in the carbonized water conditioning chamber 2.
[0113] The single serve volume of carbonized water is allowed to flow into the carbonized water conditioning chamber 2 and thus increases the pressure in the carbonized water conditioning chamber, preferably up to a pressure of 1,25-4 bar, for example about 1,5 bar.
[0114] In the embodiment shown, the carbonized water conditioning chamber 2 is provided with the gas outlet 18, which is configured to keep the pressure in the conditioning chamber below a predetermined pressure, in the embodiment shown at 1,25 bar.
[0115] After the conditioning chamber 2 has been filled with the single serve carbonated water volume, the single serve carbonated water volume is held for a period in the range of 2 seconds. Then, the pressure in the conditioning chamber is reduced to substantially atmospheric pressure.
[0116] The single serve carbonized water volume is allowed to flow out of the conditioning chamber 2, and via the dispensing outlet 5 into a beverage container 11. In the preferred embodiment shown, the dispensing device is 1 comprises a seat 12 for holding the ingredient cartridge 13 downstream of the outlet valve 17 of the carbonized water conditioning chamber 1 and in the flow path of the carbonized water dispensed via said outlet valve 17, to mix the carbonized water with an ingredient, e.g. syrup, after the carbonized water has been held in the carbonized water conditioning chamber.
[0117] A dispenser according to the invention is configured to provide a consumer with a predetermined volume of carbonized water. The predetermined volume can be received in a beverage container, e.g. a glass or cup. In an embodiment, the dispenser is configured for also allowing a consumer to fill a bottle with carbonized water.
[0118] According to the invention, the mixture of the single serve volume of carbonized water and the unresolved CO2 flows from the in-line flow compensator into the carbonized water conditioning chamber, which chamber is located downstream of the in-line flow compensator. The single serve volume of carbonated water is subsequently held under pressure in that conditioning chamber, after which the pressure is lowered and the single serve volume is dispensed at atmospheric or near atmospheric pressure. It is submitted that the temporarily retention in the carbonized water conditioning chamber is part of the in-line carbonization processes, i.e. the solubilization of CO2 (carbon dioxide) in the single serve water volume. Therefore, carbonized water enters the conditioning chamber only during a dispensing cycle, the carbonized water conditioning chamber does not hold more than a single serve volume of carbonized water, and does not hold any substantial water volume between dispensing cycles. Furthermore, in-line mixing of the single serve volume of carbonized water with any ingredient, e.g. syrup, will take place downstream of the carbonized water conditioning chamber.
[0119] The invention is advantageously used in an in-line carbonization device for dispensing predetermined single serve volumes of carbonized water. In such a configuration, the water is carbonized using an in-line carbonator and an in-line flow compensator. With each serving, only the volume of water required for a single serve, i.e. a metered single serve volume, is carbonized while being dispensed. Thus, there is no reservoir, or a carbonating tank or saturator, for storing a large volume of pre-carbonized water, i.e. water carbonized prior to a consumer providing a dispensing order. Furthermore, because the dispenser is able to provide beverages with a relatively high CO2 content, a carbonized water dispensing device according to the invention is in particular useful in providing soda beverages, more in particular for in-line mixing the single serve carbonized water volume with an ingredient, e.g. a syrup or extract, since these types of drinks are typically associated with high CO2 content.
List of reference signs
[0120]
01 carbonized water dispensing device according to the invention
02 carbonized water conditioning chamber
03 cold water source
04 CO2 source
05 carbonized water dispensing outlet
06 water line
07 in-line carbonator
08 in-line flow compensator
09 user interface
10 beverage container support surface
11 beverage container
12 seat for holding cartridge
13 cartridge
14 water supply
15 reservoir holding a volume of cold water for cooling water line
16 valve water supply
17 outlet valve conditioning chamber
18 gas outlet of the conditioning chamber
19 control device of user interface
50 tubular conduit
51 input end
52 output end
53 output end
57 inlet manifold
55 inlet for water
56 inlet for carbon dioxide
57 outlet
58 first treatment trajectory
59 conditioning trajectory
60 second treatment trajectory
61 helical dispersion element
62 passive accelerator
63 rigid impact surface
- a carbonized water dispensing outlet (5), for dispensing a single serve carbonized water volume into a beverage container (11);
- a cold water source (3);
- a CO2 source (4);
- a water line (6), which preferably is a chilled water line, the water line (6) extending between the cold water source (3) and a dispensing outlet (5);
- a water carbonation system comprising a carbonator (7), preferably an in-line carbonator provided in the water line, for adding CO2 from the CO2 source (4) to the water flowing through the water line (6) from the cold water source (3) to the carbonized water dispensing outlet (5), the CO2 preferably being added at a water pressure in the range of 5-9 bar;
- a user interface (9) comprising a control device (19) configured to receive a beverage dispensing order, and subsequently actuate the carbonized water dispensing device (1) to dispense a single serve volume of carbonized water;
wherein the water carbonation system further comprises:- a carbonized water conditioning chamber (2), which conditioning chamber (2) is provided downstream of the carbonator (7) and upstream of the carbonized water dispensing outlet (5), for receiving a mixture of carbonized water mixed with unresolved CO2, which conditioning chamber (2) is dimensioned to hold a single serve of carbonized water with a headspace, and which carbonized water conditioning chamber (2) is provided with:
- an outlet valve (17) for in a closed condition enabling the carbonized water conditioning chamber (2) to hold the single serve volume of carbonized water, and for in an open condition allowing the single serve volume of carbonized water to flow out of the carbonized water conditioning chamber (2) and subsequently out of the carbonized water dispensing outlet (5) into a beverage container (11);
- a gas outlet (18) for in a closed condition preventing unresolved CO2 from escaping the conditioning chamber (2) and thus enabling a pressure increase, preferably a pressure increase of up to 0,25 - 4 bar or more, in the conditioning chamber (2) during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2, and for in an open condition allowing the pressure in the conditioning chamber (2) to lower to atmospheric pressure or near atmospheric pressure, e.g. 1,1 bar, prior to the single serve carbonized water volume flowing out of the conditioning chamber (2); and
wherein the carbonized water dispensing device (1) is configured to, upon receiving the beverage dispensing order, provide the empty carbonized water conditioning chamber (2) with a single serve volume of carbonized water, and hold the single serve of carbonized water prior to dispensing the single serve volume of carbonized water.a tubular conduit disposed about a longitudinal axis, extending from an input end to and output end, and defining a fluid flow path from the input end to the output end;
an inlet manifold comprising a first inlet for water, a second inlet for carbon dioxide, and an outlet in fluid communication with the input end of the conduit;
wherein the conduit comprises a first treatment trajectory followed by a conditioning trajectory followed by a second treatment trajectory;
wherein each treatment trajectory comprises:
a helical dispersion element disposed in the conduit and having an axis substantially aligned with the longitudinal axis of the conduit;
a passive accelerator located immediately downstream of the helical dispersion element, wherein the passive accelerator comprises a restriction portion of the conduit having a reduced cross sectional area relative to portions of the conduit immediately upstream and downstream of the restriction portion;
a rigid impact surface immediately downstream of the passive accelerator, which rigid impact surface is disposed substantially perpendicular to the longitudinal axis of the conduit; and
wherein the conditioning trajectory comprises:
a conditioning conduit extending between the first and second treatment trajectories, the conditioning conduit having an axis substantially aligned with the longitudinal axis of the conduit.
- starting the dispensing process, e.g. by a consumer providing a user interface (9) with a beverage dispensing order, the user interface subsequently actuating a carbonized water dispensing device to dispense a single serve volume of carbonized water;
- passing a single serve water volume, preferably at a pressure of 5-9 bar, through an in-line carbonator (6) and preferably through a flow compensator (8), thus creating a mixture of carbonized water mixed with unresolved CO2;
- allowing the single serve volume of carbonized water to flow into a carbonized water conditioning chamber (2) and thus increasing the pressure in the carbonized water conditioning chamber, preferably up to a pressure of 1,25-4 bar, for example about 1,5 bar;
- optionally, keeping the pressure in the conditioning chamber below a predetermined pressure, preferably a predetermined pressure in the range of 1,25 - 4 bar;
- optionally, after filling the conditioning chamber with the single serve carbonated water volume, hold the single serve carbonated water volume for a period in the range of 1-4 seconds, preferably in the range of 2-3 seconds, for example for 3 seconds;
- reducing the pressure in the conditioning chamber to substantially atmospheric pressure, preferably after the single serve carbonized water volume has entered the conditioning chamber;
- allowing the single serve water volume to flow out of the conditioning chamber, and via a dispensing outlet (5) into a beverage container (11);
- optionally: stimulating the single serve water volume to flow out of the conditioning chamber by providing a pressure slightly above atmospheric pressure, preferably by allowing pressurized CO2 to flow into the conditioning chamber, and thus preferably provide an even flow rate.
- einen Abgabeauslass (5) für kohlensäurehaltiges Wasser zur Abgabe eines Einzelportionsvolumens kohlensäurehaltigen Wassers in einen Getränkebehälter (11);
- eine Kaltwasserquelle (3);
- eine CO2-Quelle (4);
- eine Wasserleitung (6), die vorzugsweise eine Kaltwasserleitung ist, wobei sich die Wasserleitung (6) zwischen der Kaltwasserquelle (3) und einem Abgabeauslass (5) erstreckt;
- ein System zur Karbonisierung von Wasser, das einen Karbonisator (7), vorzugsweise einen in der Wasserleitung angeordneten Inline-Karbonisator, zur Zugabe von CO2 aus der CO2-Quelle (4) zu dem Wasser, das durch die Wasserleitung (6) von der Kaltwasserquelle (3) zu dem Abgabeauslass (5) für kohlensäurehaltiges Wasser fließt, umfasst, wobei das CO2 vorzugsweise bei einem Wasserdruck im Bereich von 5 bis 9 bar zugegeben wird;
- eine Benutzerschnittstelle (9), die eine Steuervorrichtung (19) umfasst, die so konfiguriert ist, dass sie einen Getränkeabgabeauftrag empfängt und anschließend die Abgabevorrichtung (1) für kohlensäurehaltiges Wasser betätigt, um ein Einzelportionsvolumen an kohlensäurehaltigem Wasser abzugeben;
wobei das System zur Karbonisierung von Wasser weiterhin umfasst:eine Konditionierungskammer (2) für kohlensäurehaltiges Wasser, wobei die Konditionierungskammer (2) stromabwärts des Karbonisators (7) und stromaufwärts des Abgabeauslasses (5) für kohlensäurehaltiges Wasser vorgesehen ist, um ein Gemisch aus kohlensäurehaltigem Wasser, das mit ungelöstem CO2 vermischt ist, aufzunehmen, wobei die
Konditionierungskammer (2) so dimensioniert ist, dass sie eine Einzelportion kohlensäurehaltiges Wasser mit einem Kopfraum halten kann, und wobei die Konditionierungskammer (2) für kohlensäurehaltiges Wasser versehen ist mit:
- einem Auslassventil (17), um in einem geschlossenen Zustand zu ermöglichen, dass die Konditionierungskammer (2) für kohlensäurehaltiges Wasser das Einzelportionsvolumen an kohlensäurehaltigem Wasser halten kann, und um in einem offenen Zustand zu ermöglichen, dass das Einzelportionsvolumen an kohlensäurehaltigem Wasser aus der Konditionierungskammer (2) für kohlensäurehaltiges Wasser und anschließend aus dem Abgabeauslass (5) für kohlensäurehaltiges Wasser in einen Getränkebehälter (11) fließt;
- einen Gasauslass (18), um in einem geschlossenen Zustand zu verhindern, dass ungelöstes CO2 aus der Konditionierungskammer (2) entweicht, und somit einen Druckanstieg, vorzugsweise einen Druckanstieg von bis zu 0,25 bis 4 bar oder mehr, in der Konditionierungskammer (2) während des Einströmens des Gemischs aus dem Einzelportionsvolumen an kohlensäurehaltigem Wasser und ungelöstem CO2 zu ermöglichen, und um in einem offenen Zustand zu ermöglichen, dass der Druck in der Konditionierungskammer (2) auf Atmosphärendruck oder nahezu Atmosphärendruck, z. B. 1,1 bar, abgesenkt wird, bevor das Einzelportionsvolumen an kohlensäurehaltigem Wasser aus der Konditionierungskammer (2) fließt; und
wobei die Abgabevorrichtung (1) für kohlensäurehaltiges Wasser so konfiguriert ist, dass sie bei Erhalt des Getränkeabgabeauftrags die leere Konditionierungskammer (2) für kohlensäurehaltiges Wasser mit einem Einzelportionsvolumen an kohlensäurehaltigem Wasser versorgt und das Einzelportionsvolumen an kohlensäurehaltigem Wasser vor der Abgabe des Einzelportionsvolumens an kohlensäurehaltigem Wasser hält.der in der Wasserleitung stromabwärts des Karbonisators, vorzugsweise des Inline-Karbonisators, und direkt stromaufwärts der Konditionierungskammer für kohlensäurehaltiges Wasser vorgesehen ist.
eine röhrenförmige Leitung, die um eine Längsachse angeordnet ist, sich von einem Eingangsende zu einem Ausgangsende erstreckt und einen Fluidströmungspfad vom Eingangsende zum Ausgangsende definiert;
einen Einlassverteiler, der einen ersten Einlass für Wasser, einen zweiten Einlass für Kohlendioxid und einen Auslass in Fluidverbindung mit dem Eingangsende der Leitung umfasst;
wobei die Leitung eine erste Behandlungstrajektorie, gefolgt von einer Konditionierungstrajektorie, gefolgt von einer zweiten Behandlungstrajektorie, umfasst;
wobei jede Behandlungstrajektorie umfasst:
ein schraubenförmiges Dispersionselement, das in der Leitung angeordnet ist und eine Achse aufweist, die im Wesentlichen mit der Längsachse der Leitung ausgerichtet ist;
einen passiven Beschleuniger, der unmittelbar stromabwärts des schraubenförmigen Dispersionselements angeordnet ist, wobei der passive Beschleuniger einen Verengungsabschnitt der Leitung mit einer verringerten Querschnittsfläche relativ zu Abschnitten der Leitung unmittelbar stromaufwärts und stromabwärts des Verengungsabschnitts umfasst;
eine starre Aufprallfläche unmittelbar stromabwärts des passiven Beschleunigers, wobei die starre Aufprallfläche im Wesentlichen senkrecht zur Längsachse der Leitung angeordnet ist; und
wobei die Konditionierungstrajektorie umfasst:
eine Konditionierungsleitung, die sich zwischen der ersten und der zweiten Behandlungstrajektorie erstreckt, wobei die Konditionierungsleitung eine Achse aufweist, die im Wesentlichen mit der Längsachse der Leitung ausgerichtet ist.
- Starten des Abgabevorgangs, z.B. indem ein Verbraucher einer Benutzerschnittstelle (9) einen Getränkeabgabeauftrag erteilt, wobei die Benutzerschnittstelle anschließend eine Abgabevorrichtung für kohlensäurehaltiges Wasser betätigt, um ein Einzelportionsvolumen an kohlensäurehaltigem Wasser abzugeben;
- Durchleiten eines Einzelportionsvolumens an Wasser, vorzugsweise bei einem Druck von 5 bis 9 bar, durch einen Inline-Karbonisator (6) und vorzugsweise durch einen Strömungskompensator (8), wodurch ein Gemisch aus kohlensäurehaltigem Wasser, gemischt mit ungelöstem C02, erzeugt wird;
- Einströmenlassen des Einzelportionsvolumens an kohlensäurehaltigem Wasser in eine Konditionierungkammer (2) für kohlensäurehaltiges Wasser und dadurch Erhöhung des Drucks in der Konditionierungskammer für kohlensäurehaltiges Wasser, vorzugsweise bis zu einem Druck von 1,25 bis 4 bar, zum Beispiel etwa 1,5 bar;
- gegebenenfalls Halten des Drucks in der Konditionierungskammer unter einem vorbestimmten Druck, vorzugsweise einem vorbestimmten Druck im Bereich von 1,25 bis 4 bar,
- optional, nach dem Füllen der Konditionierungskammer mit dem Einzelportionsvolumen an kohlensäurehaltigem Wasser, Halten des Einzelportionsvolumens an kohlensäurehaltigem Wasser für einen Zeitraum im Bereich von 1 bis 4 Sekunden, vorzugsweise im Bereich von 2 bis 3 Sekunden, zum Beispiel für 3 Sekunden;
- Reduzieren des Drucks in der Konditionierungskammer auf im Wesentlichen atmosphärischen Druck, vorzugsweise nachdem das Einzelportionsvolumen an kohlensäurehaltigem Wasser in die Konditionierungskammer eingetreten ist;
- Ermöglichen, dass das Einzelportionsvolumen an Wasser aus der Konditionierungskammer und über einen Abgabeauslass (5) in einen Getränkebehälter (11) fließt:
- optional: Stimulieren des Fließens des Einzelportionsvolumens an Wasser aus der Konditionierungskammer durch Bereitstellen eines Drucks, der geringfügig über dem Atmosphärendruck liegt, vorzugsweise durch Strömenlassen von unter Druck stehendem CO2 in die Konditionierungskammer, und somit vorzugsweise Bereitstellen einer gleichmäßigen Durchflussrate.
- une sortie de distribution d'eau gazéifiée (5), pour distribuer un volume d'eau gazéifiée en portion individuelle dans un récipient de boisson (11) ;
- une source d'eau froide (3) ;
- une source de CO2 (4) ;
- une conduite d'eau (6), qui est de préférence une conduite d'eau réfrigérée, la conduite d'eau (6) s'étendant entre la source d'eau froide (3) et une sortie de distribution (5) ;
- un système de gazéification de l'eau comprenant un carbonateur (7), de préférence un carbonateur interne à la conduite prévu dans la conduite d'eau, pour ajouter du CO2 en provenance de la source de CO2 (4) à l'eau s'écoulant à travers la conduite d'eau (6) de la source d'eau froide (3) à la sortie de distribution d'eau gazéifiée (5), le CO2 étant de préférence ajouté à une pression d'eau dans la plage de 5 à 9 bars ;
- une interface utilisateur (9) comprenant un dispositif de commande (19) configuré pour recevoir un ordre de distribution de boisson, et pour actionner ensuite le dispositif de distribution d'eau gazéifiée (1) pour distribuer un volume d'eau gazéifiée en portion individuelle ;
dans lequel le système de gazéification de l'eau comprend en outre :- une chambre de conditionnement d'eau gazéifiée (2), laquelle chambre de conditionnement (2) est prévue en aval du carbonateur (7) et en amont de la sortie de distribution d'eau gazéifiée (5), pour recevoir un mélange d'eau gazéifiée mélangée à du CO2 non résolu, laquelle chambre de conditionnement (2) est dimensionnée pour maintenir une portion individuelle d'eau gazéifiée avec un espace libre, et laquelle chambre de conditionnement d'eau gazéifiée (2) comporte :
- un robinet de sortie (17) pour permettre, dans un état fermé, à la chambre de conditionnement d'eau gazéifiée (2) de maintenir le volume d'eau gazéifiée en portion individuelle, et pour permettre, dans un état ouvert, au volume d'eau gazéifiée en portion individuelle de s'écouler hors de la chambre de conditionnement d'eau gazéifiée (2) et ensuite, hors de la sortie de distribution d"eau gazéifiée (5) dans un récipient de boisson (11) ;
- une sortie de gaz (18) pour empêcher, dans un état fermé, le CO2 non résolu de s'échapper de la chambre de conditionnement (2) et permettre ainsi une augmentation de pression, de préférence une augmentation de pression allant jusqu'à 0,25 à 4 bars ou plus, dans la chambre de conditionnement (2) lors de l'entrée du mélange du volume d'eau gazéifiée en portion individuelle et du CO2 non résolu, et pour permettre, dans un état ouvert, à la pression dans la chambre de conditionnement (2) de baisser à la pression atmosphérique ou au voisinage de la pression atmosphérique, par exemple, à 1,1 bar, avant écoulement du volume d'eau gazéifiée en portion individuelle hors de la chambre de conditionnement (2) ; et
dans lequel le dispositif de distribution d'eau gazéifiée (1) est configuré pour alimenter, à réception de l'ordre de distribution de boisson, la chambre de conditionnement d'eau gazéifiée (2) vide avec un volume d'eau gazéifiée en portion individuelle, et maintenir la portion individuelle d'eau gazéifiée avant distribution du volume d'eau gazéifiée en portion individuelle.un conduit tubulaire disposé autour d'un axe longitudinal, s'étendant d'une extrémité d'entrée à une extrémité de sortie, et définissant un trajet d'écoulement de fluide de l'extrémité d'entrée à l'extrémité de sortie ;
un collecteur d'entrée comprenant une première entrée pour l'eau, une seconde entrée pour le dioxyde de carbone et une sortie en communication fluidique avec l'extrémité d'entrée du conduit ;
dans lequel le conduit comprend une première trajectoire de traitement suivie par une trajectoire de conditionnement suivie par une seconde trajectoire de traitement ;
dans lequel chaque trajectoire de traitement comprend :
un élément de dispersion hélicoïdal disposé dans le conduit et ayant un axe sensiblement aligné avec l'axe longitudinal du conduit ;
un accélérateur passif situé immédiatement en aval de l'élément de dispersion hélicoïdal, dans lequel l'accélérateur passif comprend une partie d'étranglement du conduit ayant une surface en section transversale réduite par rapport aux parties du conduit immédiatement en amont et en aval de la partie d'étranglement ;
une surface d'impact rigide immédiatement en aval de l'accélérateur passif, laquelle surface d'impact rigide est disposée sensiblement perpendiculairement à l'axe longitudinal du conduit ; et
dans lequel la trajectoire de conditionnement comprend :
un conduit de conditionnement s'étendant entre les première et seconde trajectoires de traitement, le conduit de conditionnement ayant un axe sensiblement aligné avec l'axe longitudinal du conduit.
- le démarrage du processus de distribution, par exemple par un consommateur fournissant à une interface utilisateur (9) un ordre de distribution de boisson, l'interface utilisateur actionnant ensuite un dispositif de distribution d'eau gazéifiée pour distribuer un volume d'eau gazéifiée en portion individuelle ;
- le passage du volume d'eau en portion individuelle, de préférence à une pression de 5 à 9 bars, à travers un carbonateur interne à la conduite (6) et de préférence à travers un compensateur d'écoulement (8), créant ainsi un mélange d'eau gazéifiée mélangée avec du CO2 non résolu ;
- le fait de permettre au volume d'eau gazéifiée en portion individuelle de s'écouler dans une chambre de conditionnement d'eau gazéifiée (2) et d'augmenter ainsi la pression dans la chambre de conditionnement d'eau gazéifiée, de préférence jusqu'à une pression de 1,25 à 4 bars, par exemple d'environ 1,5 bar ;
- éventuellement, la conservation de la pression dans la chambre de conditionnement en dessous d'une pression prédéterminée, de préférence à une pression prédéterminée dans la plage de 1,25 à 4 bars ;
- éventuellement, après remplissage de la chambre de conditionnement avec le volume d'eau gazéifiée en portion individuelle, le maintien du volume d'eau gazéifiée en portion individuelle pendant une période dans la plage de 1 à 4 secondes, de préférence dans la plage de 2 à 3 secondes, par exemple pendant 3 secondes ;
- la réduction de la pression dans la chambre de conditionnement sensiblement à la pression atmosphérique, de préférence une fois que le volume d'eau gazéifiée en portion individuelle est entré dans la chambre de conditionnement ;
- le fait de permettre au volume d'eau en portion individuelle de s'écouler hors de la chambre de conditionnement, et via une sortie de distribution (5) dans un récipient de boisson (11) ;
- éventuellement, la stimulation du volume d'eau en portion individuelle pour le faire sortir de la chambre de conditionnement en fournissant une pression légèrement supérieure à la pression atmosphérique, de préférence en permettant à du CO2 sous pression de s'écouler dans la chambre de conditionnement, et fournir ainsi de préférence un débit régulier.
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.
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