Fecha de publicación: 30/09/2022 Fuente: WIPO Wine The invention provides an air-cooling draught beer machine, and belongs to the technical field of wine drinking equipment. The fresh-keeping device solves the problem of how to improve the fresh-keeping effect on the premise of not changing the basic structure of an existing air-cooling draught beer machine. The air-cooled draught beer machine comprises a box body, an air-cooled equipment chamber, a refrigerating chamber, a beer column and a beer outlet pipe, a water storage container with a water storage cavity, a water pump and a cooling water pipe are arranged in the refrigerating chamber, the water inlet end of the water pump is communicated with the water storage cavity, the water outlet end of the water pump is communicated with the water inlet end of the cooling water pipe, and the water outlet end of the cooling water pipe is communicated with the water storage cavity. And one part of the cooling water pipe extends into the wine column and can cool the wine outlet pipe at the position. According to the draught beer machine, a cooling circulation device composed of the water storage container, the water pump and the cooling water pipe is designed in the refrigerating chamber, the basic structure of an existing air-cooling draught beer machine is not changed, the structure is simple, and meanwhile the beer outlet pipe in the beer column can be effectively and continuously cooled and kept fresh.