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A variable pressure device to solubilize carbon dioxide (CO2) in a beverage includes: a carbonation tank, a CO2 inlet valve and a venting valve attached to the tank's top part; a discharge valve attached to the tank's bottom part; a booster pump arranged immediately after the discharge valve; a recy

A variable pressure device to solubilize carbon dioxide (CO2) in a beverage includes: a carbonation tank, a CO2 inlet valve and a venting valve attached to the tank's top part; a discharge valve attached to the tank's bottom part; a booster pump arranged immediately after the discharge valve; a recycling valve arranged immediately after the booster pump, which is connected to a recycling inlet at the top part of the tank; an outlet between the pump and the recycling valve; a level sensor arranged on the lid of the tank; a CO2 diversion valve attached to a tank side near its top part; a modulating valve arranged after the CO2 diversion valve; a Venturi attached immediately after the modulating valve; a control point arranged between the modulating valve and the Venturi; and a beverage inlet valve into the tank attached immediately after the Venturi, which is formed by a pipeline.

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1. A variable pressure device to solubilize carbon dioxide in a beverage, comprising: a carbonation tank having a top part and a bottom part, the top part being fed with carbon dioxide;a Venturi placed to communicate with said top part of the tank and with the bottom part of the tank;the Venturi bei

1. A variable pressure device to solubilize carbon dioxide in a beverage, comprising: a carbonation tank having a top part and a bottom part, the top part being fed with carbon dioxide;a Venturi placed to communicate with said top part of the tank and with the bottom part of the tank;the Venturi being fed with the carbon dioxide from said top part of the tank and with the beverage from a beverage supply, such that the carbon dioxide is solubilized in the beverage and is fed to said bottom part of the carbonation tank, the device further comprising,a modulating valve configured to control a flow rate of the carbon dioxide that is added in the Venturi, wherein said flow rate control of carbon dioxide that is added in the Venturi offsets pressure variations inside the carbonation tank and offsets temperature variations of the beverage that is added in the Venturi,wherein said Venturi comprises an upper outer body linked in relation to a lower outer body, said upper and lower outer bodies forming a pipeline, which defines an area, whereinsaid Venturi's upper outer body further comprises a carbonation ring in which is laterally machined a groove through which carbon dioxide laterally enters into the Venturi,wherein the Venturi further comprises a bullet disposed inside said upper outer body and inside said lower outer body,the bullet comprising a head, an upper centering ring, a central body and a reduction cone, wherein structural configuration of the head and of the upper outer body establish the smallest area of the Venturi, andthe area established between the lower outer body and the bullet is kept constant from a connection of the upper centering ring with the central body until a connection between the central body and the reduction cone,wherein said head, said upper centering ring and said central body internal diameters are substantially equal. 2. The variable pressure device to solubilize carbon dioxide in a beverage, according to claim 1 to solubilize carbon dioxide in a beverage, further comprising: a carbon dioxide inlet valve disposed at the top part of said carbonation tank and configured to add the carbon dioxide in the carbonation tank,a carbon dioxide diversion valve connected to said carbonation tank and configured to add carbon dioxide in the Venturi, wherein,said modulating valve is disposed after said carbon dioxide diversion valve. 3. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 2, further comprising a beverage inlet valve configured to add beverage in said carbonation tank, the beverage inlet valve disposed after the Venturi (V). 4. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 3, wherein said carbonation ring establishes a section reduction in the area of the Venturi. 5. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 4, wherein the internal diameter of said reduction cone varies from an internal diameter substantially equal to the central body internal diameter until the internal diameter of said reduction cone reaches a supplementary internal diameter of a centering pillow. 6. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 5, wherein the device further comprises a recycling inlet configured to reintroduce the beverage in said carbonation tank, said recycling inlet working in a shower mode. 7. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 3, wherein said beverage inlet valve is disposed at 30% of the carbonation tank's level. 8. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 7, further comprising a venting valve attached to the top part of said carbonation tank and a discharge valve attached to the bottom part of said carbonation tank, and wherein a booster pump is arranged immediately after said discharge valve. 9. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 8, wherein a recycling valve is arranged after said booster pump, the device further comprises an outlet located between said booster pump and said recycling valve and a level sensor arranged on the lid of said tank. 10. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 9, wherein the discharge valve has an associated vibrating fork. 11. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 10, wherein said beverage is water or a syrup. 12. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 11, wherein the beverage being fed into said Venturi is previously passed through a heat exchanger. 13. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 12, wherein said level sensor is a capacitive type sensor. 14. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 13, wherein said upper outer body and said lower outer body have internal diameters that are substantially identical to achieve beverage flow continuity. 15. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 14, wherein said carbonation tank is made of a stainless steel sheet 5 mm thick, said sheet being rolled to a cylinder, joined by inert welding on outer and inner faces where caps are welded, one cap at a top portion thereof and another cap at a bottom portion thereof, the top cap includes an inspection opening provided with a flange on which a pipe is welded for venting purposes, said pipe being associated with the venting valve, and a collar is associated for said level sensor, a carbon dioxide inlet pipe, which is associated to said carbon dioxide inlet valve, a second flange for a safety valve, an additional pipe communicating to said recycling valve with said recycling inlet, and a second collar to a pressure transducer, and said bottom cap includes the discharge valve to discharge beverage from said carbonation tank. 16. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 15, wherein said upper outer body is comprised of a first upper flange, the central body welded on one end to said first upper flange and on the other, to the carbonating ring which is laterally machined a groove through which carbon dioxide enters, including at the same time, an inlet and fixing means through which said upper outer body is fixed to a carbon dioxide inlet pipeline and to said lower outer body. 17. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 16, wherein said upper outer body, said lower outer body and said bullet are made of stainless steel and said fixing means are screws. 18. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 17, wherein said lower outer body is comprised of a second upper flange through which said upper outer body is linked in a linking region, the lower outer body further comprises a lower flange, both the second upper flange and the lower flange welded to a pipe forming a primary body, a fixing star being arranged at the lower part of said lower outer body, in the center of which there is a threaded opening and a centering pillow, and which arms are welded to an internal part of the pipe internal part, a center of the star is concentric to a wall of pipe. 19. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 18, wherein said bullet's head comprises a dome shaped form, in which the center of the head has a first through hole which crosses the head lengthways, and in the head's bottom part the head has an overhand rebate which allows to abut into the upper centering ring wherein the upper centering ring is machined with an upper rebate, a lower rebate and a second through hole which crosses the upper centering ring lengthways, said upper centering ring has at least four periphery holes distributed at 90° where at least four nipples are nailed to fix said bullet to said pipeline in the linking region of said upper outer body with said lower outer body, the central body of cylindrical shape immediately after said upper centering ring which is subjected to upper and lower recessing in upper and lower portions of the central body respectively, in order to allow abutment with said upper centering ring and with the reduction cone, where said central body further includes a third through hole which crosses the central body lengthways, said reduction cone is turned to generate: a cone, an upper recessing to be linked to said central body, a lower recessing to be linked to said fixing star of said lower outer body by means of said centering pillow, and said reduction cone further includes a fourth through hole which crosses the reduction cone lengthways. 20. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 19, wherein a coupling rod crosses said first, second, third and fourth through holes and has a supplementary thread to that of said threaded opening to fix said bullet to the pipeline. 21. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 20, wherein said head, said upper centering ring and said central body have external diameters, which must be defined in order to reduce said pipeline area so as to generate the Venturi effect, allowing the beverage stream lines to pass. 22. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 21, further comprising a control point arranged between said modulating valve and said Venturi, said control point being attached to a programmable logic controller. 23. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 22, wherein said outlet is connected to a filling equipment. 24. The variable pressure device to solubilize carbon dioxide in a beverage according to claim 23, wherein said modulating valve is a retention valve.