Carbonation machine and method for carbonating various liquids

1 . A carbonation machine comprising:

a carbonation head to sealingly couple to a bottle filled with liquid to be carbonated;

a piping to transfer carbon dioxide into a space within the bottle above a top surface of the liquid to a predetermined pressure level when the bottle is coupled to the carbonation head;

a stirrer to stir the liquid to enhance absorption of carbon dioxide in the liquid when the bottle is coupled to the carbonation head; and

a manually operated valve mechanism configured to be moved to any position between a closed position to an open position for user-controlled release of pressure within the space.

2 . The carbonation machine of claim 1 , wherein the manually operated valve mechanism comprises a pinch valve mechanism.

3 . The carbonation machine of claim 2 , wherein the pinch valve mechanism comprises a pinch bumper to pinch a drain tube to prevent flow through the drain tube when in the closed position, and to retract from the drain tube to allow flow through the drain tube to release pressure inside the bottle.

4 . The carbonation machine of claim 3 , wherein the pinch valve mechanism is configured to allow gradual retracting of the pinch bumper to release pressure through the drain tube.

5 . The carbonation machine of claim 3 , wherein the pinch bumper is held at an end of a seesaw arm pivotally supported by an axis mount.

6 . The carbonation machine of claim 5 , wherein the pinch bumper is held by a receptacle.

7 . The carbonation machine of claim 6 , wherein the pinch bumper is maintained in a default extended outwards position.

8 . The carbonation machine of claim 7 , wherein the pinch bumper is maintained in a default extended outwards position by a preloaded spring.

9 . The carbonation machine of claim 8 , wherein the preloaded spring is configured to yield to overpressure buildup inside the bottle above a predetermined overpressure threshold.

10 . The carbonation machine of claim 3 , wherein the pinch valve mechanism includes a friction generator to generate friction so as to allow manually operating the manually operated valve mechanism to any position between the closed position and the open position and maintaining that position even when the manually operated valve mechanism is released.

11 . The carbonation machine of claim 2 , wherein the pinch valve mechanism is operable by a pinch valve lever.

12 . The carbonation machine of claim 11 , wherein the pinch valve lever is substantially orthogonally coupled to a rotatable axle.

13 . The carbonation machine of claim 12 , wherein the pinch valve mechanism comprises an over-center spring positioned such that when the pinch valve mechanism approaches either the closed position or the open position, the over-center spring exerts a rotary force on an axle of the pinch valve mechanism so as to force the axle to rotate to a nearest end position, to affect either the closed position or the open position.

14 . The carbonation machine of claim 1 , wherein the stirrer is electrically operated.

15 . The carbonation machine of claim 1 , wherein the carbonation head is configured to compress the carbon dioxide in the space up to a pressure threshold.

16 . The carbonation machine of claim 15 , wherein the pressure threshold is 10 bars.

17 . The carbonation machine of claim 15 , wherein the pressure threshold is 6 bars.

18 . The carbonation machine of claim 1 , wherein parts of the machine that are designed to be placed in contact with the liquid are removable.

19 . The carbonation machine of claim 1 , further comprising a controller, configured to cause carbon dioxide to be added to the space within the bottle above the top surface of the liquid when pressure in the bottle drops below a predetermined pressure threshold.