Beverage machine

A gas infusion tank for a beverage machine, the gas infusion tank comprising:

• a tank body defining a holding space for accommodating beverages;
• a nozzle;
• a mixing element, the mixing element comprising:
• a mixing chamber;
• an ascending pipe, a top of the ascending pipe fluidly connected to the mixing chamber and a bottom of the ascending pipe having a liquid inlet, and the liquid inlet is fluidly connected to the holding space;
• a descending pipe, a top of the descending pipe is fluidly connected to the mixing chamber and a bottom of the descending pipe comprises a liquid outlet in fluid communication with the nozzle;
• and
• a gas intake hole connecting the holding space with the mixing chamber;
• wherein the mixing element is exterior of the tank body, and wherein the liquid inlet is fluidly connected to the holding space through the tank body and the gas intake hole is fluidly connected to the holding space through the tank body.

A beverage dispensing machine comprising:

• a gas infusion tank comprising:
• a tank body defining a holding space for accommodating beverages;
• a mixing element, the mixing element comprising:
• a mixing chamber;
• an ascending pipe fluidly connected to the holding space, a top of the ascending pipe fluidly connected to the mixing chamber and a bottom of the ascending pipe having a liquid inlet, and the liquid inlet is fluidly connected to the holding space;
• and
• a descending pipe at least partially disposed in the holding space, a top of the descending pipe is fluidly connected to the mixing chamber and a bottom of the descending pipe comprises a liquid outlet;
• a nozzle fluidly connected to the liquid outlet;
• a gas intake hole connecting the holding space with the mixing chamber;
• and
• a cover connected to the tank body and further defining the holding space, the cover comprising a gas inlet through the cover into the holding space and a liquid inlet through the cover and into the holding space;
• a gas source connected to the gas inlet;
• and
• a liquid source connected to the liquid inlet;
• wherein the mixing chamber comprises an opening and further comprising a mixing cap detachably connected to the mixing chamber at the opening of the mixing chamber, wherein the mixing cap releasably covers the opening, the mixing cap comprising the gas intake hole;
• and
• wherein the mixing cap is one mixing cap of a plurality of mixing caps, each configured to be detachably secured to the mixing chamber at the opening of the mixing chamber, wherein each mixing cap of the plurality of mixing caps comprises a gas intake hole of a different cross-sectional area than the gas intake holes of the other mixing caps of the plurality of mixing caps.