Fecha de publicación: 20/09/2022 Fuente: WIPO Wine The variable-frequency air-cooled refrigerating and refrigerating system comprises a refrigerating machine shell, a beer barrel and a refrigerating structure, the refrigerating machine shell is provided with a cavity, the inner side of the refrigerating machine shell divides the cavity into a refrigerating chamber and a mounting chamber through a partition plate, a heat preservation layer is arranged on the inner wall of the refrigerating chamber, and the inner wall of the mounting chamber is provided with an air inlet and an air outlet. A wine barrel, a refrigeration structure and a barrel frame are arranged in the refrigeration chamber; the wine barrel can be fixedly placed on the bottom side of the refrigeration cavity through a barrel frame, a telescopic flexible inner bag is arranged on the inner side of the wine barrel, and a refrigeration structure is arranged on the outer side of the wine barrel. The refrigeration structure comprises a temperature detection probe and a beer coil pipe, the beer coil pipe is arranged on the outer side of the beer barrel, and the temperature detection probe is arranged on the beer coil pipe. The refrigeration cavity is formed in the beer machine, the beer coil pipe and the beer barrel are arranged in the refrigeration cavity, beer is rapidly cooled through frequency conversion air cooling refrigeration and refrigerated at the same time, the beer barrel in the cavity is in a refrigeration state, and the refreshing time of the beer after unsealing is prolonged.