ITMI20121875A1 - PORTABLE RECHARGEABLE DEVICE FOR CONSERVATION AND DISTRIBUTION OF WINE IN GLASS - Google Patents

Description

PORTABLE RECHARGEABLE DEVICE FOR STORING AND DISPENSING WINE BY THE GLASS

The present invention relates to the field of devices for dispensing and tapping drinks by the glass and in particular to the sector of devices which deliver and at the same time preserve the drink from degradation phenomena due to contact with air.

The present invention relates in particular to a device which is particularly suitable for use with bottles and for dispensing still or sparkling wines.

The invention relates to a compact device that can be joined, and therefore transported, together with the bottle to optimize the overall dimensions of the bottle device and the use carried out directly at the table.

Even more particularly, the present invention relates to a device which is refillable and which allows the dispensing of the beverage contained in one, two, maximum three bottles.

Numerous examples of systems and devices for dispensing and storing beverages, especially large ones, are known in the state of the art.

One of the best known examples is represented by the device produced and marketed by the company â € œEnomaticâ €, which allows to dispense the wine present in the bottles by introducing inert gas into them, preserving the portion of wine not dispensed through the gas. inert.

This device, mainly intended for commercial use (bars and restaurants), resembles a refrigerated cellar and can contain a plurality of bottles inside. This system is appreciated because it allows the visibility of the wine served, allowing the choice by the user, but it is extremely cumbersome and requires a supply cylinder arranged, after adaptation of the premises, in a room adjacent to that where the device is located.

In the state of the art there are also more compact devices which release the bottle from the dispensing device, an example is the apparatus described in the patent application WO2010029381. In this document, the dispensing device described is integral with the bottle and detachable from the equipment used to supply inert gas. For dispensing, the device must be attached to the equipment to allow the injection of inert gas into the bottle and storage of the beverage. This solution, despite its more compact dimensions, is in any case not transportable together with the bottle, and moreover, it requires a medium-sized cylinder and an electric power supply in order to function.

There are also in the state of the art devices for dispensing wine or beverages, from containers or bottles, having such dimensions as to make them attach directly to the container and transportable with it.

An example is represented by the patent US3883043 which describes a device that can be worn on the neck of a bottle, having a member that can be inserted in the bottle cap and comprising two channels, the first to allow the transit of an inert gas to be introduced into the bottle and the second to allow the wine to flow outwards thanks to the gas introduced into the bottle.

This solution, like other solutions known in the state of the art, uses a disposable cartridge containing inert gas at high pressure as a gas supply source.

This solution generates a first problem, linked to the size of the tank. In fact, the smaller the volume of the tank containing the gas, the higher the pressure of the gas contained in it will be.

The typical size of a disposable cartridge is 10 ml, maximum 15 ml, consequently the pressure of the cartridge necessary to fill a 75 cl bottle with inert gas, and therefore empty the same of the wine in it, must be of at least 50 bar.

The devices that use disposable cartridges withstand very high pressures, which expose the user to high risks, and require compliance with stringent regulations on the use and transport of high-pressure containers. Furthermore, the design of these devices is much more complex and expensive, and the pressure reducers that can be used are much more elaborate and expensive, for example membrane reducers with one or more stages which are necessary to sufficiently reduce the pressure coming out of the cartridge.

Furthermore, the use of cartridges implies that these must be extracted from the device and thrown away at the end of each use of the same, with a consequent increase in the cost of dispensing due to the cost of the cartridge casing; and with the inevitable production of waste to be disposed of or recycled.

A similar gas supply system with cartridges is adopted by the devices described in patents US4702396, FR2945526, US4674662, US4473174 and by various other systems known in the state of the art.

A second problem of the device US3883043 is represented by the fact that the gas and beverage channels have the same length, and the hole from which the gas comes out in the container is at the same height as the one where the beverage enters for pouring. In fact, this solution does not allow the dispensing of wine from the bottle, because the gas entering the container tends to send it under pressure, and as soon as the pressure rises, the further inserted gas seeks the simplest and shortest way to escape from the container. ™ environment under pressure, rising through the beverage channel instead of bubbling into it towards the bottom of the container.

Other solutions known in the state of the art solve this problem by dispensing the wine only when the bottle is placed vertically, i.e. with the mouth facing the sky, providing a dip tube for the drink that ends near the bottom of the bottle and a gas supply channel that ends in the upper or intermediate part of the bottle, and in any case shorter than the dip tube of the beverage. This type of solution is adopted in patents FR2945526, US4702396 and in various other devices known in the state of the art.

In these solutions it is in fact impossible to dispense the drink by means of the traditional tilting movement of the bottle.

These solutions provide for a drink tube which reaches the bottom of the bottle and a gas under pressure which pushes the drink downwards and forces it to enter and rise through the tube until it comes out of the bottle and the device. This type of solution implies the presence of a long float of the drink which, besides being aesthetically unpleasant, increases the overall dimensions of the device, affecting its portability. Furthermore, the pressure required with respect to the overturning version described, in document US 3883043, must be higher to overcome the force of gravity acting on the beverage rising inside the float.

A very long float of the drink is also difficult to clean and a receptacle for bacteria and germs that can contaminate the wine.

A further solution to the problem is offered by patent US4706847, in which a bottle is positioned inclined on a pedestal, to facilitate the approach of the drink to a drink channel.

In this solution, an apparatus not described supplies an inert gas under pressure which is introduced into the bottle by means of the device, pushing the beverage into delivery. During this process, the bottle remains positioned on a support that keeps it tilted with the mouth pointing downwards.

In this solution the bottle cannot be moved from the support during dispensing.

A third problem of the device described in US 3883043 is represented by the fact that a system for opening and closing the beverage channel is missing. This aspect has three drawbacks: 1) the air can flow back through the beverage channel until it enters the container, making the preservative effect of the inert gas introduced into the bottle vain; 2) the drink continues to come out of the bottle even when the gas supply is interrupted, due to the fact that the drink continues to be pushed outwards by the double effect of gravity and the compression of the gas introduced into the bottle , an effect that lasts until the internal pressure reaches values comparable to atmospheric pressure; 3) if the user returns the bottle to a vertical position to stop the outflow of the drink, the drink present in the final section of the channel is sprayed out of the device due to the residual pressure present in the bottle, with the unpleasant inconvenience of staining the user and everything surrounding the device.

The same drawback can be found in patents US4674662 and FR2945526, in which a valve is provided for supplying gas, but not a valve for opening / closing the beverage channel, which in fact remains always open.

This problem is partially solved in US patent 4473174 which describes a dispensing device comprising a flow meter which is activated by opening the channel when the pressure of the beverage in the beverage channel reaches and exceeds a predetermined value. Also in this case, but to a lesser extent than in the case of patent US 3883043, due to the absence of the effect of gravity and due to the presence of the flow meter, the dispensing of wine continues for a few moments even after the Interruption of the gas supply due to the residual pressure present in the bottle, causing the inconvenience of not interrupting the supply when the user really desires it. If the flowmeter of patent US4473174 were calibrated to promptly close the beverage channel, the problem would arise that, upon subsequent delivery of gas into the bottle, the pressure would rise up to the opening threshold of the flowmeter, with a sudden initial jet of drink. and copious, which could stain the user or disperse the wine.

A further solution to the problem is offered by patent US4702396, which describes a dispensing device comprising an opening / closing valve of the beverage channel independent of the gas channel adjustment valve. This solution implies that, in order to dispense the drink, the container must be placed under pressure in advance, otherwise by opening the drink channel it would not be able to exit the device.

The dispensing device of the US4702936 patent, by dispensing the gas independently from the beverage dispensing, requires the container to be previously pressurized, exposing the user to numerous risks and generating any sealing problems for the device .

In addition, the aforementioned devices that can be attached directly to the container and transportable with it, describe systems for coupling the device to the bottle that are not very effective, subject to probable pressure losses and possible detachments of the device from the container, with the inevitable degradation of the drink and / or risks for the user.

For example, the devices of patents US4473174, US4706847, FR2945526 and US4702396 do not provide for an anchoring system to the external wall of the bottle neck or to the annular edge present in classic glass bottles, but rather provide for a coupling inside the mouth. of the bottle, as occurs with traditional corks or polymeric material. Instead, the US4674662 patent provides for an anchoring of the device to the belly of the bottle, while the US3883043 patent is joined to the bottle thanks to the penetration of the original cap of the same.

Finally, full-bodied beverages such as wines, and in particular vintage wines, may have difficulty in passing through a too narrow beverage channel, such as the one described in US patent 3883043, risking, between one dispensing and another , the obturation of the canal with the residues that accumulate in it.

It is an object of the present invention to overcome the drawbacks of the known art and in particular those mentioned above, by providing a compact and portable device that can be coupled to a container for storing the beverage present therein and for dispensing said beverage by cup, which avoids the use of disposable inert gas cartridges and in particular which is easily refillable with inert gas.

It is another object of the invention to provide a compact portable rechargeable device that allows the storage of wine for several weeks, and the storage of the vessel and the device attached to it in any cellar, wine cellar or refrigerator.

It is still a further object of the invention to provide a rechargeable portable device which minimizes the risks deriving from its use for the user.

It is a further object of the invention to provide a rechargeable portable device which is economical to manufacture and which allows its use in a domestic environment.

These and other purposes according to the present invention are achieved by realizing a portable device for dispensing and storing a beverage contained in an open container provided with a neck and a mouth in correspondence with said neck, said portable device being which can be coupled to said container to introduce an inert gas at low pressure which, in combination with the force of gravity, pushes said beverage into delivery when said device is inclined with respect to the vertical, putting the beverage in contact with said device, said inert gas introduced into said receptacle being further adapted to store said residual beverage remaining in the receptacle, said device comprising:

- means for attachment to the neck of the container able to make a tightly integral connection between the device and the container;

- a tank for the containment of an inert gas under pressure;

- a drink channel suitable for the passage of the drink from the container to the outside for its outflow; - a gas channel suitable for the passage of the inert gas from the tank into the container;

- means for reducing the pressure placed in said gas channel adapted to reduce the outlet pressure of the inert gas flowing into said container;

- means for regulating the flow in the gas and beverage channels adapted to regulate the flow of the inert gas and the beverage respectively;

in which said tank is incorporated in said device and comprises an inlet valve connectable to a refill device for refilling the tank, said tank being charged at a predetermined filling pressure.

Advantageously, this device allows the refilling of an internal tank, avoiding the use of disposable cartridges. Furthermore, this solution allows the use of several devices at the same time without these having to be connected to the source of inert gas for dispensing the beverage.

In particular, said tank inlet valve can be a non-return valve able to advantageously allow the tank to be refilled and prevent the outflow of gas to the outside or unwanted gas leaks from it.

The tank of the device can have a capacity between 25 ml and 250 ml, preferably between 30 ml and 200 ml, even more preferably between 80 ml and 170 ml. While the predetermined pressure with which said tank is loaded can be between 1.5 and 35 bar, preferably between 3 and 15 bar, more preferably between 4 and 10 bar.

The pressure values indicated, and therefore the use of the device, are to be referred to the normal temperature ranges provided for the storage and tasting of wine, preferably at the temperature range 1-35 ° C, more preferably at the range temperature 4-24 ° C.

Advantageously, the aforesaid values of the tank capacity allow to maintain, for the same container to be emptied, the predetermined filling pressure of the tank within contained values, for example in the case of a 75 cl container and a 100 ml tank, the predetermined filling pressure, necessary to fill the container, is less than 10 bar.

Since volume and pressure are inversely correlated, said tank charge capacity and pressure values allow easy filling with inert gas of containers of 37.5, 50, 75, 100, or 150 cl, thus allowing the dispensing of all the drink contained therein.

Furthermore, low pressure values allow a lower constructive complexity of the device with consequent economic savings, and lower risks for the user.

Advantageously, the tank can at least partially surround the container to reduce the overall dimensions of the device with respect to it. In this way, the device and container together are more compact and therefore easily stored or transportable. In the event that the container is a classic bottle of wine, for example of the Bordeaux type, the tank can surround the neck of the bottle so that the device, joined to the bottle, substantially assumes the shape of a cylinder having approximately the height and the diameter of the bottle.

The device coupling means can be constrained to an edge present on the neck of the container, and / or to the neck itself, to connect the device to the container in an integral manner, and can comprise a sealing element designed to ensure the insulation of the container. Inside the container from the external environment when said device is connected to said container.

Advantageously, said coupling means make it possible to create both an integral bond between the device and the container and, thanks to the sealing element, an isolation of the environment inside the container from the external environment, especially when the container is inert gas was introduced.

The coupling means can comprise a first annular ring that can be worn on the neck of the container and provided with a plurality of flexible elements that can be engaged with the outer skirt of the neck of the container, a second ring that can be moved on said first ring nut to engage and lock said flexible elements to said outer shell of the neck, said device being mechanically connectable to said first ring nut to couple it integrally with the container.

Advantageously, the first and second ring nuts, cooperating with each other, allow the neck of the container to be constricted, creating an integral support, firmly connected to the container, to which the device can be connected.

Alternatively, said coupling means can comprise a third annular ring that can be worn on the neck of the container and provided with a plurality of flexible elements that can be engaged with the outer shell of the neck of the container, a fourth annular ring that can be screwed, with the opposite direction of rotation, respectively, to said third annular ring nut and to said device, for engaging and locking said flexible elements to said outer skirt of the neck when said device is rotated with respect to said third ring nut by screwing said fourth ring nut onto said third ring nut and onto the device. Advantageously, a fourth ring nut can be configured to rise and throttle said third ring nut when said device rotates with respect to said third ring nut, simplifying the connection between device and container with equal sealing and solidity thereof.

When said device is connected to said receptacle, said gas and beverage channels can extend at least partially within said receptacle, said gas channel extending further into said receptacle than said beverage channel.

Advantageously, both channels protrude at least partially into the container and in particular the gas channel protrudes more than that of the beverage, to prevent the inert gas inserted in the container, during the dispensing of the beverage, from flowing back out through the drink channel, instead of bubbling into the same towards the bottom of the container.

The beverage channel can end in a pouring element, preferably insertable and removable from said device to facilitate cleaning.

Advantageously, said removable pouring element allows easier cleaning of the beverage channel from the impurities present in some beverages, for example from any residues left on the device from vintage wines.

In the device, the pressure reducing means placed in the gas channel can comprise a calibrated orifice, or a needle valve, or a membrane pressure regulator.

Advantageously, a calibrated orifice is an element characterized by a restriction of the passage channel, having a predetermined outlet opening, capable of allowing a reduction in the pressure and flow rate of the gas. Said pressure reduction is proportional to the pressure and flow rate of the gas entering the calibrated orifice.

On the contrary to the calibrated orifice, a needle valve allows an adjustment of the passage opening of the inert gas. This solution, which produces the same technical effect as the orifice, allows the device to adapt to different types of inert gas.

A diaphragm pressure regulator allows the supply of inert gas at an almost constant pressure over time, as well as a high pressure reduction when the values of this are medium-high, for example when the tank is full and the pressure passing through the regulator is at its maximum value.

In particular, said low pressure with which the inert gas is introduced into the container is a function of the pressure reduction carried out by said reduction means, and in any case it is comprised between 0.05 bar and 1 bar, preferably between 0.1 bar and 0, 6 bar.

Said means for regulating the flow in the gas and beverage channels can be operated simultaneously to control the delivery of the gas and the beverage and also to avoid unwanted entry of air or output of beverage from the device.

Advantageously, this solution allows to open and close the gas and beverage channels at the same time, avoiding beverage outlets or the entry of air into the container.

Said means for regulating the flow in the gas and beverage channels can comprise at least one piston movable inside the device between a first position in which said gas and beverage channels are closed and a second position in which both said channels of the gas and drink are open.

Advantageously, one or more pistons, moving between said first and second positions, allow a gradual adjustment of the opening of the gas and beverage channels, avoiding excesses of one or the other.

Said piston may further comprise a knob and helical connection means to the device, for regulating said flows of gas and drink by rotating said knob. Advantageously, the piston, activated by the rotation of the knob, can rototranslate by finely adjusting the opening / closing of the gas channel, as well as the dispensing of the drink.

Said piston can be activated by the effect of the movement of a lever, or of a button, or of an electromechanical device.

Advantageously, a lever allows to reduce the effort for the user of the device in opening said gas and beverage channels. Alternatively, a button allows for a smaller footprint and easier use for the user. In the case of an electromechanical device, the management of the device is particularly simplified.

An electromechanical device, such as a solenoid, can be controlled by a small electric control unit operated by an interface with the user and can be powered by a small battery inside the device.

Said piston may have a conical end adapted to regulate the opening of said gas channel when said piston moves between said first and second positions.

Advantageously, a conical end, in particular when this is as acute as a pin, allows an extremely fine adjustment of the gas flow, when the piston moves. A conical end allows a progressive adjustment of the inert gas passage opening.

Said means for regulating the flow in the gas and beverage channels can comprise at least one shutter that can be rotated inside the device, provided with at least one internal means, to open / close said gas and beverage channels when said shutter rotates.

Advantageously, a rotatable shutter allows a better static seal, especially as regards the gas channel.

The device can comprise means for coupling to said source of inert gas under pressure.

Advantageously, the device can comprise coupling means for securing it to the source of inert gas under pressure and making the tank refilling process safer.

In particular, said inert gas can be nitrogen, or argon, or carbon dioxide, or their mixtures.

Advantageously, the aforementioned gases allow the beverage to be preserved by preserving it from oxidation without degrading its taste, especially when the beverage is wine.

In particular, the tank of the portable device according to the present invention can be refilled by a recharging device comprising:

- an internal reserve of inert gas;

- means of connection to the device;

- gas supply means suitable for the passage and regulation of gas from the internal reserve to the tank of the device.

Advantageously, said internal reserve of the recharging device can be a cylinder that allows simple and rapid recharging of the portable device, even in the home. This solution is also the cheapest for recharging the portable device.

Alternatively, said recharging device can be a recharging base suitably designed to accommodate the portable device and further simplify the recharging procedure.

Advantageously, said internal reserve of inert gas guarantees a supply for numerous refills, said connection means allow a quick and tenacious coupling of the device to the base, while said supply means allow the supply of inert gas to the tank.

Said recharging device may comprise second pressure reduction means adapted to reduce the pressure at which the inert gas escapes from said internal reserve to said predetermined filling pressure of the tank.

Advantageously, said second pressure reduction means allow the pressure of the inert gas coming from the internal reserve to be reduced to the predetermined charge pressure useful for refilling the tank. A second object of the present invention is a method of dispensing a beverage from a device which can be coupled to a container containing the beverage, comprising the steps of:

- recharging said device with inert gas under pressure; - tilting said container and said device connected to it with respect to the vertical to bring the drink towards the device;

- introducing an inert gas into the container by means of the device;

- dispense the drink contained in the container through the device;

- keep the residual beverage present in the container with the inert gas introduced.

Advantageously, said method allows the beverage to be stored, as well as to dispense it by cup, making the device independent once it is refilled with inert gas.

The characteristics and advantages of a portable device for dispensing and storing a beverage contained within an open container according to the present invention will become more evident from the following description, exemplary and not limiting, referring to the attached schematic drawings, in which:

Figure 1 shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage contained within an open container, during the beverage dispensing step;

Figure 2 shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage contained within an open container, during the beverage storage phase;

Figure 3 shows a further schematic perspective view of an embodiment of a portable device for dispensing and storing a drink contained in an open container;

figure 4a shows a schematic sectional view of the device of figure 3, according to a plane parallel to the y-z plane, during the tank refilling step by means of inert gas;

- figure 4b shows a schematic sectional view of the device of figure 3, according to a plane parallel to the y-z plane, when this is loaded with inert gas under pressure; figure 4c shows a schematic sectional view of the device of figure 3, according to a plane parallel to the y-z plane, during the phase of dispensing the beverage and inlet of the inert gas into the container;

figure 4d shows a schematic sectional view of the device of figure 3, according to a plane parallel to the x-z plane, during the phase of dispensing the beverage and inlet of the inert gas into the container;

Figure 4e shows a schematic sectional view of the device of Figure 3, according to a plane parallel to the x-y plane, during the phase of dispensing the beverage and inlet of the inert gas into the container;

figure 5a shows a perspective schematic view of an embodiment of the recharging device;

- figure 5b shows the refill device of figure 5a connected to a portable device for dispensing and storing a beverage, for refilling the tank; figure 5c shows a perspective schematic view of a further embodiment of the recharging device; - figure 5d shows the refill device of figure 5c connected to a portable device for dispensing and storing a beverage, for refilling the tank; Figure 6a shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage connected to a container and having a reservoir which partially surrounds the container;

figure 6b shows a schematic sectional view of the device of figure 6a according to a plane parallel to the y-z plane;

- figure 7a shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage connected to a container, equipped with a lever for operating the means for regulating the flow in the gas and beverage channels ;

figure 7b shows a schematic sectional view of the device of figure 7a according to a plane parallel to the y-z plane;

- figure 8a shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage connected to a container, equipped with a button for activating the means for regulating the flow in the gas and beverage channels ;

figure 8b shows a schematic sectional view of the device of figure 8a according to a plane parallel to the y-z plane;

- figure 9a shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage connected to a container, equipped with a rotatable shutter inside the device for activating the flow adjustment means in the gas and beverage channels;

figure 9b shows a schematic sectional view of the device of figure 9a according to a plane parallel to the y-z plane;

Figure 10a shows a schematic perspective view of an embodiment of a portable device for dispensing and storing a beverage connected to a container, comprising two pistons operated by a button for regulating the flow in the gas and beverage channels;

Figure 10b shows a schematic sectional view of the device of Figure 10a according to a plane parallel to the x-y plane;

With reference to the figures, the number 100 indicates a portable device for dispensing and storing a beverage contained in an open container.

With reference to Figure 1, a portable device 100 for dispensing and storing a beverage 400 connectable to a recipient 300 containing a beverage 400 during its dispensing phase is shown, in which a user 500, by operating the adjustment means 108 (not visible in figure 1), allows the inert gas to enter the container 300 and the beverage 400 to be dispensed into a glass 600.

When the user 500 decides that the glass 600 is sufficiently filled with drink 400, he can close the adjustment means 108 (not visible in figure 1) by interrupting the dispensing of the drink 400 from the device 100 and the gas inlet inert in vessel 300.

Figure 2 shows the device 100 in a vertical position after the dispensing phase, when the beverage 400 is preserved by the inert gas introduced into the container 300.

This conservation, thanks to the inert gas introduced, can last for days or weeks.

The drink 400 can be stored even when the container 300 and the device 100 connected thereto are arranged horizontally.

The adjustment means 108 (not shown in Figure 2), once closed, allow to avoid unwanted leaks of inert gas or beverage 400 from the device 100.

With reference to figures 3, 4, 5, 6, 7, 8, 9 and 10, a portable device 100 is shown for dispensing and storing a beverage 400 contained within an open container 300 provided with a neck 181 and of a mouth at said neck 181, said portable device 100 being coupled to said container 300 to introduce an inert gas at low pressure which, in combination with the force of gravity, pushes said beverage 400 into delivery when said device 100 it is inclined with respect to the vertical by placing the beverage 400 in contact with said device 100, said inert gas introduced into said receptacle 300 also being able to store said residual beverage 400 remaining in receptacle 300, said device 100 comprising:

- means for hooking 103 to the neck 181 of the container 300 suitable for making a tightly integral connection between the device 100 and the container 300;

- a tank 102 for containing an inert gas under pressure;

- a beverage channel 104 suitable for the passage of the beverage 400 from the receptacle 300 to the outside for its outflow;

- a gas channel 106 suitable for the passage of the inert gas from the tank 102 into the container 300;

- means 107 for reducing the pressure placed in said gas channel 106 adapted to reduce the outlet pressure of the inert gas flowing within said container 300;

- means 108 for regulating the flow in the channels of the gas 106 and of the beverage 104, suitable for regulating the flow of the inert gas and of the beverage 400 respectively;

in which said tank 102 is incorporated in said device 100 and comprises an inlet valve 109 connectable to a refill device 200 for refilling the tank 102, said tank 102 being charged at a predetermined charging pressure.

In particular, with reference to Figures 3 and 4, a first embodiment of the device according to the present invention is shown.

In figure 4a, the device 100 comprises an inlet valve 109, in particular a non-return valve, which allows the tank 102 to be refilled avoiding the outflow of the inert gas outside the device 100.

Said non-return valve, also represented in Figures 6 and 9, can comprise a mobile element 133 equipped with a gasket 134 pushed against the device 100 by a spring 135. The thrust of the spring 135 together with the pressure present in the tank 102 ensure that the gasket 134 provides the necessary airtightness.

Conversely, when the recharging device 200 is coupled to the device 100 and said inert gas under pressure is introduced into the tank 102, said movable element 133 moves by detaching the gasket 134 from the abutment point and opens the inlet valve 109.

Once the tank 102 has been refilled at said predetermined charging pressure, as shown in Figure 4b, the inert gas remains trapped in the device 100 until the adjustment means 108 remain closed.

In particular, said adjustment means 108 shown in figures 4 are a piston 118 movable inside the device 100 between a first position in which the gas channels 106 and beverage 104 are closed, as shown in figure 4b, and a second position in which the gas channels 106 and beverage 104 are open, as shown in Figure 4c. Said adjustment means 108, and in particular said piston 118, are operated simultaneously to control the delivery of gas and drink 400 and avoid unwanted air inlets or outlets of drink 400. In particular, said piston 118 is equipped with second sealing elements 124 which can abut with the device 100 to interrupt said gas channels 106 and beverage 104.

Said piston 118 may further comprise an axial sealing element 125 to prevent the inert gas, instead of continuing along the gas channel 106, from flowing back into the beverage channel 104.

Said second sealing elements 124 and said axial sealing element 125 can be made of elastic material, preferably polymeric, even more preferably polyurethane or NBR.

In a particular embodiment (not shown), said piston 118 can have a flattened shape and said second sealing elements 124 can also have a flattened shape to optimize the overall dimensions of the device 100. In this particular version the piston 118 slides on said second sealing elements 124 and has two passages for opening and closing the gas channels 106 and beverage 104 respectively.

In said first embodiment of the device 100, the piston 118, shown in figure 3 and in figure 4, comprises a knob 119 and helical connection means 120 to the device 100.

By turning said knob 119 said piston 118 is driven into rotation and, thanks to the helical connection means 120, can rotate translation, finely adjusting the gas and beverage flows.

For example, by selecting a fine pitch thread as helical connection 120, the regulation of the flows is extremely gradual, while by selecting a coarse pitch thread, the regulation of the flows is more sudden with the same rotation angle of the knob 119.

With reference to Figures 4b and 4c, said adjustment means 108, and in particular said piston 118, by moving between said first and said second position, allow the regulation of the gas and beverage flows 400 between a minimum value and a maximum value.

Said gas channels 106 and beverage 104 can be passage channels made in the body of the device 100, as illustrated in Figures 4, and can extend at least partially into the container 300.

In particular, said gas channel 106 extends further into the container (portion 117) than the beverage channel 104 (portion 116).

This solution prevents the inert gas introduced into the container 300 from flowing back into the beverage channel 104.

In particular, said portion 117 of the gas channel 106 extends into the container 300 without immersing itself in the beverage 400 when the container 300 is in a vertical resting position. With reference to Figure 4d, the device 100 is illustrated with the gas channel 106 (not visible) and the beverage channel 104 open. The drink 400 is free to flow through the drink channel 104 until it reaches the pouring element 105 and comes out of the device 100.

Figure 4e shows the device 100 with both the gas channels 106 and the beverage 104 open to allow the inert gas to enter the container 300 and the simultaneous release of the beverage 400 from the pouring element 105.

In particular, said pouring element 105 is extractable from the device 100 to facilitate its cleaning.

In fact, in the case of full-bodied beverages full of residues, such as wines, rinsing the beverage channel 104 is often necessary each time the device 100 is used.

In order to reduce the pressure of the inert gas emerging from the tank 102 and intended to be introduced into the container 300, to push the beverage 400 into delivery, the device 100 can comprise various types of pressure reduction means 107 installed in said gas channel 106. In particular, said reducing means 107 can be a calibrated orifice 132 or a needle valve (not shown), or a diaphragm pressure regulator (not shown).

The calibrated orifice 132 has the advantage of being very compact and drastically reducing the pressure at which the gas escapes from the tank 102, especially when the device 100 is used after refilling the tank 102.

The pressure reduction operated by the calibrated orifice 132 is proportional to the pressure and the flow rate of the inert gas flow entering the calibrated orifice 132. The trend of the pressure downstream of the calibrated orifice 132 decreases in the time with an initial peak, corresponding to the first opening of the gas channel 106 after the refilling operation of the tank 102. To reduce the effect of the initial pressure peak downstream of the calibrated orifice 132, it is possible to adjust manually the flow of inert gas, acting directly on the adjustment means 108.

Preferably, said reduction means 107 are placed in said gas channel 106 and in particular downstream of said adjustment means 108.

Alternatively, the inert gas pressure entering vessel 300 can be stabilized over time by installing a membrane pressure regulator instead of a calibrated orifice 132.

It is also possible to replace the calibrated orifice 132 with a needle valve which, like the calibrated orifice 132, allows a drastic reduction in the pressure of the inert gas coming from the tank 102, but with the possibility of regulating its flow rate and pressure output.

Said reducing means 107 bring the pressure of the inert gas coming from the tank 102 and entering the vessel 300 to values between 0.05 bar and 1 bar.

In particular, the average diameter of the gas channels 106 can vary from 1 to 3 mm, while that of the beverage channel 104 from 2.5 to 6 mm.

Said calibrated orifice 132 can be an element having a through hole which narrows to a diameter of a few microns to allow a drastic reduction of the pressure of the inert gas coming out of the tank 102.

Preferably, the miniaturized flow restrictor manufactured by The Lee Company can be used as a calibrated orifice.

The pressure necessary to fill the container 300 with inert gas, and therefore empty it of the beverage 400 contained therein, is a function of the volume of the container 300 and the volume of the tank 102.

In the case in which said container 300 is a 75 cl bottle and the tank 102 has a capacity between 25 ml and 250 ml, said predetermined charge pressure, necessary to completely fill the bottle, can vary from a minimum of 4 bar and a maximum of 30 bar.

In the case of smaller containers said predetermined charge pressure can be lower, while for larger containers it is higher, but in any case not higher than 35 bar.

Similarly, the pressure required to dispense the beverage 400 contained in a 150 cl container 300 will be approximately double that of emptying a 75 cl container 300. In this case, the device 100 can be used to dispense a single 300 cl container or two 75 cl containers.

With reference to a second embodiment of the device 100 shown in figures 6, the tank 102 surrounds at least in part said container 300 to reduce the overall dimensions of the device 100 with respect to the container 300, in particular, in the case of containers 300 such as bottles in glass for wine, which have the typical flared shape at the neck and enlarged in the remaining part, ie in the belly of the bottle.

To optimize the overall footprint, the device 100 can be as wide as the bottle, so that, once joined to the bottle, it has approximately the same footprint as the bottle alone.

Furthermore, when the tank 102 at least partially surrounds the container 300, the overall height of the device-container assembly is reduced to a minimum, further optimizing the overall dimensions.

In particular, in the second embodiment of the device 100, shown in figure 6b, said piston 118 is brought back to said first closing position by an elastic means 126. Said elastic means 126 can be a torsional spring connected to the device 100 and to the piston 118 .

Coupling means 103 form a tightly integral connection to firmly connect the device 100 to the container 300 and isolate the environment inside the container 300 from the external environment.

In particular, said coupling means 103 can be fastened to an edge 182 present on the neck 181 of the container 300 and / or to the neck 181 itself, to connect the device 100 to the container 300 in an integral manner.

With reference to figures 4, 6, 7 and 9, said coupling means 103 can comprise a sealing element 110 able to guarantee, when said device 100 is connected to said container 300, the insulation of the container 300 from the external environment.

Said sealing element 110 can have a hollow mushroom shape to offer a double seal, both to the inner skirt of the neck 181 and to the upper edge of the container 300, as illustrated in figures 4, 7b and 9b, or have an a-shape cylindrical crown to ensure a seal with only the upper edge of the container 300, as illustrated in figure 6b. In particular, said sealing element 110 can be a gasket made of silicone or other elastic polymeric material, to adapt to the container 300 when said device 100 is connected to it.

The neck 181 of the container 300, for example in a glass bottle for wine, and in particular the annular edge 182 of the neck 181, ensures a firm anchoring point for the device 100.

In a particular embodiment, said coupling means 103, shown in Figures 3, 4, 7 and 9, may comprise: a first annular ring 111 which can be worn on the neck 181 of the container 300 and provided with a plurality of flexible elements 112 which can be engaged with the shell external of the neck 181 and / or with the edge 182 present on the neck 181 of the container 300; a second annular ferrule 113 which can be moved on said first ferrule 111 to engage and lock said flexible elements 112 to said outer shell of the neck 181. Once said first and second ferrules 111, 113 have been locked to the container 300, said device 100 can be mechanically connected to said first ring 111 to make said sealing element 110 adhere to container 300 and make device 100 integral with container 300.

The mechanical connection between the device 100 and the first ring 111 can be a first threaded coupling 127. Said second ring 113 can translate on said first ring 111 and remain joined to it by means of a second threaded coupling 128.

A portion of the internal surface of the second ring 113 can be internally converging to constrict the flexible elements 112 when said second ring 113 is screwed onto said first ring 111.

In a further embodiment, represented in figure 6b, said coupling means 103 comprise a third annular ring nut 114, which can be worn on the neck 181 of the container 300 and provided with a plurality of flexible elements 112â € ™ engageable with the outer shell of the neck 181 of the container 300 and / or with the edge 182 present on the neck 181 of the container 300; a fourth annular ring nut 115 which can be screwed, with the opposite direction of rotation, respectively to said third ring nut 114 and to said device 100, to engage and lock said flexible elements 112â € ™ to said outer skirt of the neck 181 when said device 100 is rotated with respect to said third ring nut 114, by screwing said fourth ring nut 115 onto said third ring nut 114 and onto said device 100.

In particular, said fourth ferrule 115 can be coupled to said third ferrule 114 by means of a third threaded coupling 129 present on its internal surface, and can be coupled to the device 100 by means of a fourth threaded coupling 130 present on its external surface. In particular, said fourth threaded coupling 130 has an opposite direction of screwing and a greater pitch than the thread of the third threaded coupling 129.

Said flexible elements 112â € ™ have a shape enlarged towards the outside in their terminal part, able to make said flexible elements 112 flex towards the inside when said fourth ring nut 115 comes into contact with said flexible elements 112â € ™ .

In particular, said fourth ferrule 115, screwing onto said third ferrule 114, comes into contact with said flexible elements 112â € ™ strangling the neck 181 of the container 300. Having said third and fourth threaded couplings 129, 130 opposite direction of screwing, the device 100 by rotating with respect to said third ring 114, it allows the translation of said fourth ring 115 along its axis of rotation. Said fourth ring nut 115, when translating, can come into contact with said flexible elements 112â € ™ forcing them to flex and adhere to the outer mantle of the neck 181.

This solution allows to reduce the number of actions that the user has to do to connect the device 100 to the container 300, obtaining in any case an integral and sealed connection of the device 100 to the container 300.

With reference to Figures 7, a third embodiment of the device 100 is illustrated in which said adjustment means 108 comprise a piston 118 operated by the effect of the movement of a lever 121.

The use of a lever 121 allows the user to reduce the effort to actuate the piston 118, especially when said actuation is opposed by the thrust provided by an elastic means 126 adapted to return said piston 118 to said first closing position of the gas channels 106 and the beverage 104. For example, the lever 121 can be operated with the force exerted by the user's thumb alone, while the rest of the hand can support the bottle.

In this way, one hand is sufficient to use the device 100 when this is connected to the container 300. Said lever 121 also allows greater sensitivity in the adjustment of said adjustment means 108.

Said lever 121 is mechanically connected to said piston 118 and hinged to the device 100. Said piston 118 can slide in the device 100 when said lever 121 moves, imposing a translation on the piston 118.

Said piston 118 is equipped with second sealing elements 124 which can abut with the device 100 to interrupt said gas channels 106 and beverage 104.

Said piston 118 also comprises axial sealing elements 125 to prevent the inert gas from flowing back into the beverage channel 104 or outside.

In particular, in figure 7b, the inlet valve 109 is a non-return valve equipped with a ball 136 pushed into abutment by a spring 135 against the valve body 139 which is included in the device 100. Selecting the spring appropriately 135 It is possible to adjust the opening pressure of said inlet valve 109.

With reference to Figures 8, a fourth embodiment of the device 100 is illustrated, in which said adjustment means 108 comprise a piston 118 operated by the movement of a button 122.

The use of a button 122 makes it possible to make device 100 more compact, reducing its overall dimensions.

By pressing the button 122, the piston 118 can translate from said first to said second position.

In particular, as illustrated in figure 8b, the piston 118 can be divided into two parts axially connected to each other to simplify its installation inside the device 100.

The piston 118 has second sealing elements 124 which can abut the device 100 when said piston 118 moves into said first position.

Said piston 118 also comprises axial sealing elements 125 to prevent the inert gas from flowing back into the beverage channel 104 or outside.

In this embodiment of the device 100, represented in figure 8b, said coupling means can comprise an annular body 138, which can be worn on the device 100 and can be inserted in the mouth of the neck 181, equipped with a plurality of flexible wings to connect it to the vessel 300 and ensure a seal.

In a further embodiment of the device 100 (not shown) said adjustment means 108 comprise an electromechanical device (not shown) for operating the piston 118.

Said electromechanical device, for example an electromagnetically controlled actuator, can be mechanically connected to the piston 118 to allow its actuation and translation from said first closing position to said second opening position of said gas channels 106 and beverage 104 In a further embodiment of the device 100 (not shown), said piston 118 has a conical end adapted to regulate the opening of said gas channel when said piston 118 moves between said first and second positions. In particular, said conical end (not shown) can have an extremely acute shape and, by moving, open and close said gas channel by modifying the opening of the same, as in a needle valve.

With the same axial movement of the piston 118, the gas channel 106 can open less than the beverage channel 104, depending on the acute angle of said conical end.

The sharper the shape of the conical end of the piston 118, which blocks said gas channel 106, the greater the sensitivity of the adjustment means 108 for regulating the flow of inert gas in the gas channel 106.

With reference to figures 9, a fifth embodiment of the device 100 is shown in which said adjustment means 108 comprise a shutter 123 rotatable inside the device 100, equipped with at least one internal through for opening / closing said gas channels 106 and of the beverage 104 when said shutter 123 rotates.

Said shutter 123 preferably has two means: one for regulating the gas channel 106 and the other for regulating the beverage channel 104.

By rotating said shutter 123, said means can place the upstream and downstream portions of said gas channels 106 and beverage 104 into fluid communication.

In particular, said shutter 123 can be made of polymeric material to seal on said device 100 and prevent leaks of the inert gas under pressure. Alternatively, said obturator 123 can seal on gaskets (not shown) present on device 100.

Said shutter 123 can have a spherical, cylindrical or truncated cone shape, so as to be able to rotate easily around the rotation axis.

Alternatively, said shutter 123 can comprise two perforated balls (not shown) axially connected to each other to impart a common adjustment movement, so that said shutter 123 acts as two ball valves axially connected to each other.

By using certain materials for the realization of the shutter 123, for example PTFE, the friction between the shutter 123 and the device 100 is reduced and the sealing is improved.

To rotate said shutter 123, a cross or bar-shaped knob 119 can be used, connected to shutter 123 along its axis of rotation. With reference to Figures 10, a sixth embodiment of the device 100 is illustrated in which said adjustment means 108 comprise two pistons 118a, 118b parallel to each other and operated by the effect of the common movement of a button 122.

Said pistons 118a, 118b move simultaneously inside the device 100, according to their own parallel axes, respectively adjusting the opening / closing of the beverage channels 104 and the gas 106.

In particular, said button 122, instead of translating, as in the embodiment shown in figure 8b, can rotate according to a hinge 131, to allow a more sudden opening of the beverage channel 104 with respect to the gas channel 106, partially compensating for the difference density existing between the inert gas and the beverage 400.

Both pistons 118a, 118b are returned to the closing position of their respective channels by respective elastic means 126.

In this position, second sealing elements 124, positioned on the pistons 118a, 118b, allow the channels of the beverage 104 and of the gas 106 to be sealed.

A pair of axial sealing elements 125 allow to avoid backflow of gas or beverage 400 outside the device 100.

In particular, in the form shown in figure 10a the pouring element 105 is fixed and incorporated in the device 100.

The device 100 according to the present invention can comprise a first safety valve (not shown), arranged in said gas channel 106, to prevent said container 300, in the event of blockage of the beverage channel 104, from going under pressure beyond a certain safety pressure, preferably not higher than 1 or 2 bar, and allowing any excess pressure to be released into the air.

The device 100 according to the present invention can comprise means for coupling 137 to said source of inert gas 200.

Said coupling means 137 can be a threaded surface, as illustrated in figures 4, 6, 7, 9, 10, suitable for being coupled to said recharging device 200 or, alternatively, a surface configured to provide a quick coupling (not illustrated) with said recharging device.

Said coupling means 137 allow the device 100 to be hooked to the recharging device 200 and can guarantee sealing during the recharging step of the device 100, to avoid waste and dispersion of inert gas.

Preferably the inert gas used in the device 100 and in the inert gas source 200 is nitrogen, or argon, or carbon dioxide, or mixtures thereof.

The device 100 according to any of the preceding embodiments can be made of metal, for example steel or aluminum or their alloys, or of polymeric material, for example polyethylene, nylon or polypropylene.

With reference to Figures 5, two embodiments of a recharging device 200 are illustrated.

In particular, said refill device 200 of the tank 102 of a device 100 according to the present invention comprises:

- an internal reserve 202 of inert gas;

- connection means 201 to the device 100;

- gas supply means 203 suitable for the passage and regulation of the gas from the internal reserve 202 to the tank 102 of the device 100.

In particular, figures 5a and 5b show a first embodiment of the recharging device 200, indicated by the number 200a, in which said internal reserve is a disposable 202â € ™ cylinder, equipped with connection means 201 for connecting to the tank 102 of the device 100.

In this embodiment, said cylinder 202â € ™ can be connected to the device 100 by means of said connection means 201 to refill the tank 102. In particular, said connection means 201 are joined, preferably by threaded coupling, to said supply means 203 to allow the passage and regulation of the inert gas flow from cylinder 202â € ™ to tank 102.

Furthermore, when the pressure inside the cylinder 202â € ™ is higher than said predetermined charge pressure, said recharging device 200a can provide second pressure reduction means to reduce the pressure at the outlet from the cylinder 202â € ™ to said predetermined pressure load.

Figure 5a shows the charging device 200a with the supply means 203 closed since it is disconnected from the device 100, while figure 5b shows the charging device 200a connected to the device 100 and with the supply means 203 open for refill the tank 102 of the device 100.

With particular reference to Figures 5c and 5d, a second embodiment of the recharging device 200 is represented, in which said recharging device 200 is a recharging base indicated with the number 200b.

In particular, said recharging base 200b comprises an internal reserve 202 of inert gas, connection means 201 suitable for hooking said device 100 and retaining it during the refilling of the tank 102, supply means 203 for regulating and passing the inert gas from the internal reserve 202 to tank 102 of device 100.

In particular, said internal reserve 202 can be a refillable tank, or alternatively, a cylinder of inert gas. Furthermore, said internal reserve 202 can be a nitrogen generator, which supplies the inert gas by filtering and purifying the air present in the environment surrounding the recharging base 200b.

Said supply means 203 comprise conduits (not shown) for conveying the inert gas from the internal reserve 202 to the device 100 and at least one valve for regulating the passage of inert gas in said conduits. An interface system 207 capable of informing the user about the recharging status of the device 100 can be connected to said supply means 203.

Said recharging base 200b may further comprise second pressure reducing means (not shown) for reducing the pressure of the inert gas emerging from the internal reserve 202 to said predetermined filling pressure of the tank 102.

Said second pressure reducing means can be a membrane pressure reducer with one or more stages.

Said connection means 201 allow to hook said device 100 to the recharging base 200b. In particular, said connection means 201 can comprise a threaded surface which can be coupled to said coupling means 137 or alternatively means for quick coupling with said coupling means 137, configured as pneumatic quick couplings. In a further embodiment (not shown), said connection means 201 may comprise an element which can be coupled to said inlet valve 109 and a system of elastic arms (not shown) capable of pawing and holding in position the device 100 during the step of refilling the tank 102. Said recharging base 200b can comprise a support 206 adapted to support said connection means 201, said internal reserve 202 of inert gas and contain said supply means 203.

A particular embodiment (not shown) of said recharging base 200b comprises a plurality of connection means 201 for simultaneously connecting and recharging several devices 100.

In particular, in this embodiment, said recharging base 200b can be managed by an electronic control unit (not shown) and interact with the user by means of electronic interface means (not shown). In a further embodiment (not shown) said recharging base 200b can be a built-in household appliance equipped with an internal reserve of inert gas, preferably a cylinder, connection means with the device 100 and suitable gas supply means. to supply the inert gas to the tank 102 of the device 100.

Figure 5c shows the charging base 200b having the supply means 203 closed, while figure 5d shows the charging base 200b connected to the device 100 and with the supply means 203 open to refill the tank 102. The interface system 207 is raised to inform the user that the tank 102 of the device 100 is loaded at said predetermined charging pressure.

In a particular embodiment, said recharging device 200 comprises a second safety valve to prevent the pressure from exceeding a predetermined safety value in the event of a malfunction of said second reduction means.

A second object of the present invention is a method of dispensing a beverage 400 from a device 100 which can be coupled to a container 300 containing the beverage 400, comprising the steps of:

- recharging said device 100 with inert gas under pressure;

- tilting said container 300 and said device 100 connected thereto with respect to the vertical to bring the beverage 400 towards device 100;

- introducing an inert gas into the container 300 by means of the device 100;

- dispensing the drink 400 contained in the container 300 through the device 100;

- preserving the residual beverage 400 present in the container 300 with the inert gas introduced.

In particular, the recharging of the device 100 allows it to be moved freely and independently of the recharging source.

The step of tilting the container 300 and the device 100 makes it possible to facilitate the subsequent dispensing step.

The introduction of the inert gas into the container 300 allows the escape of the beverage 400 and at the same time the protection of the beverage 400 from oxidation according to the subsequent storage phase.

Said device 100 is recharged with inert gas at said predetermined charging pressure by means of said recharging device 200.

Once the tank 102 is filled with inert gas at said predetermined charging pressure, the device 100 is disconnected from said recharging device 200 and is ready for use.

By integrally and tightly connecting said device 100 to a container 300, such as a glass bottle, said device 100 can deliver and then store the beverage 400. In particular, by tilting the container 300, and therefore the device 100 connected to it, the beverage 400 moves until it comes into contact with device 100 and in particular with its beverage channel 104.

At this point it is possible to open said means 108 for regulating the flow in the channels of the gas 106 and of the beverage 104, to introduce the inert gas contained in the tank 102 into the container 300, after an appropriate pressure reduction by means of said reduction means. 107 of the pressure; said inert gas at low pressure introduced into the container 300, bubbling towards the bottom of the container 300, pushes the beverage 400 to enter the beverage channel 104 and to reach the pouring element 105 and then the glass 600. Once said glass 600 is filled, by closing said regulating means 108 said flows in the channels of gas 106 and beverage 104 are interrupted and said dispensing ends.

The container 300, with the inert gas introduced and the residual beverage 400, can be placed, horizontally or vertically, in a refrigerator or in a cellar, since the inert gas introduced allows the preservation of the beverage 400 from oxidation and from degradation until the next use of the device 100.

Once the container 300 of the beverage 400 contained therein has been emptied, said device 100 can be refilled again by means of said refill device 200, or used again, if it is still sufficiently loaded with inert gas under pressure.

With reference to the figures and to the different embodiments, identical or similar elements are indicated with the same numbering.

It is also clear that all elements of the text can be combined with each other.

Finally, it is also clear that the device thus conceived is susceptible of numerous modifications and variations, all falling within the scope of the invention; furthermore, all the details can be replaced by technically equivalent elements. In practice, the materials used, as well as the dimensions, can be any according to the technical requirements.

Claims (21)

CLAIMS 1. Portable device (100) for dispensing and storing a beverage (400) contained within an open container (300) provided with a neck (181) and a mouth in correspondence with said neck (181) , said portable device (100) being coupled to said container (300) to introduce in it an inert gas at low pressure which, in combination with the force of gravity, pushes said beverage (400) into dispensing when said device (100) is inclined with respect vertically by putting the beverage (400) in contact with said device (100), said inert gas introduced into said receptacle (300) also being able to store said remaining beverage (400) remaining in the receptacle (300), said device (100) including: - means for hooking (103) to the neck (181) of the container (300) able to make an integral and sealed connection between the device (100) and the container (300); - a tank (102) for containing an inert gas under pressure; - a beverage channel (104) suitable for the passage of the beverage (400) from the container (300) to the outside for its outflow; - a gas channel (106) suitable for the passage of the inert gas from the tank (102) inside the container (300); - pressure reducing means (107) placed in said gas channel (106) adapted to reduce the outlet pressure of the inert gas flowing into said vessel (300); - means (108) for regulating the flow in the gas (106) and beverage (104) channels adapted to regulate the flow of the inert gas and the beverage (400) respectively; characterized in that said tank (102) is incorporated in said device (100) and comprises an inlet valve (109) which can be connected to a refill device (200) for refilling the tank (102), said tank (102 ) being chargeable at a predetermined charge pressure. 2. Device (100) according to claim 1, wherein said inlet valve (109) is a non-return valve suitable for allowing the tank (102) to be refilled and preventing the outflow of gas to the outside. Device (100) according to claim 1 or 2, wherein said reservoir (102) has a capacity comprised between 25 ml and 250 ml. Device (100) according to any of the preceding claims, wherein said predetermined charge pressure is comprised between 1.5 and 35 bar. Device (100) according to any of the preceding claims, in which said tank (102) at least partially surrounds said container (300) to reduce the overall dimensions of the device (100) with respect to the container (300). Device (100) according to any of the preceding claims, in which said coupling means (103) can be fastened to an edge (182) present on the neck (181) of the container (300) and / or the neck (181) itself, to connect the device (100) integrally to the container (300), and include a sealing element (110) designed to ensure the insulation of the interior of the container (300) from the external environment when said device ( 100) is connected to said vessel (300). Device (100) according to any of the preceding claims, wherein said coupling means (103) comprise: - a first annular ring nut (111) which can be worn on the neck (181) of the container (300) and is provided with a plurality of flexible elements (112) engageable with the outer shell of the neck (181) of the container (300); - a second annular ring nut (113) translatable on said first ring nut (111) to engage and lock said flexible elements (112) to said outer skirt of the neck (181); said device (100) being mechanically connectable to said first ring nut (111) to couple it integrally with the container (300). Device (100) according to any of claims 1 to 6, wherein said coupling means (103) comprise: - a third annular ring nut (114) which can be fitted to the neck (181) of the container (300) and provided with a plurality of flexible elements (112) which can be engaged with the outer shell of the neck (181) of the container (300); - a fourth annular ring nut (115) which can be screwed, with the opposite direction of rotation, respectively to said third ring nut (114) and to said device (100), to engage and lock said flexible elements (112) to said outer shell of the neck (181 ) when said device (100) is rotated with respect to said third ring nut (114) by screwing said fourth ring nut (115) on said third ring nut (114) and on said device (100). Device (100) according to any of the preceding claims, wherein, when said device (100) is connected to said vessel (300), said gas (106) and beverage (104) channels project at least partially (117 , 116) within said container (300), said gas channel (106, 117) extending further into the container (300) than said beverage channel (104, 116). Device (100) according to any of the preceding claims, wherein said pressure reducing means (107) placed in said gas channel (106) comprise a calibrated orifice (132), or a needle valve, or a pressure regulator membrane pressure. 11. Device (100) according to any of the preceding claims, wherein said means (108) for regulating the flow in the gas (106) and beverage (104) channels can be operated simultaneously to control the supply of gas and beverage (400) and avoid unwanted air inlets or outlets of beverage (400) from the device (100). Device (100) according to any of the preceding claims, wherein said means (108) for regulating the flow in the gas (106) and beverage (104) channels comprise at least one piston (118) movable inside the device (100) between a first position in which said gas (106) and beverage (104) channels are closed and a second position in which both said gas (106) and beverage (104) channels are open. Device (100) according to claim 12, wherein said piston (118) comprises a knob (119) and helical connection means (120) to the device (100), for regulating said gas and beverage flows by rotating said knob (119). Device (100) according to claim 12, wherein said at least one piston (118) is operated by the effect of the movement of a lever (121), or of a button (122), or of an electromechanical device. Device (100) according to any of claims 12 to 14, wherein said piston (118) has a conical end adapted to adjust the opening of said gas channel (106) when said piston (118) moves between said first and second position. Device (100) according to any of claims 1 to 11, wherein said means (108) for regulating the flow in the gas (106) and beverage (104) channels comprise at least one shutter (123) rotatable to the interior of the device (100), equipped with at least one internal via, for opening / closing said gas (106) and beverage (104) channels when said shutter (123) rotates. Device (100) according to any of the preceding claims, comprising means for coupling (137) to said source of inert gas (200). Device (100) according to any of the preceding claims, wherein said inert gas is nitrogen, or argon, or carbon dioxide, or mixtures thereof. Tank (102) refill device (200) of a portable device (100) according to claims 1 to 18 comprising: - an internal reserve (202) of inert gas; - connection means (201) to the device (100); - gas supply means (203) suitable for the passage and regulation of the gas from the internal reserve (202) to the tank (102) of the device (100). 20. Refilling device (200) according to claim 19, comprising second pressure reducing means adapted to reduce the pressure at which the inert gas escapes from said internal reserve (202) to said predetermined filling pressure of the tank (102). 21. Method of dispensing a beverage from a device (100) which can be coupled to a container (300) containing the beverage (400), comprising the steps of: - recharging said device (100) with inert gas under pressure; - tilting said container (300) and said device (100) connected thereto with respect to the vertical to bring the beverage (400) towards the device (100); - introducing an inert gas into the vessel (300) by means of the device (100); - dispensing the drink (400) contained in the container (300) through the device (100); - preserving the residual beverage (400) present in the container (300) with the inert gas introduced. Stefano BARACCO and Pietro BARACCO