Congelation cylinder for congelation machine

The utility model provides a congelation cylinder for a congelation machine, the congelation cylinder is composed of an inner layer and an outer layer, a channel of a net structure is arranged betweenthe inner layer and the outer layer, one end of the congelation cylinder is provided with a fixing flange and an air outlet, the other end of the congelation cylinder is provided with an air inlet flange pipe, and an inner cavity of the congelation cylinder is plated with chromium. The inner layer and the outer layer are both made of pure nickel N6, and an uneven wavy structure is formed on the outer surface of the outer layer. The inner layer and the outer layer of the congelation cylinder are both made of pure nickel N6, and the pure nickel N6 has good welding performance and is easy to process, so that the congelation cylinder can be easily welded with stainless steel. The uneven wavy outer surface of the congelation cylinder can increase the contact area with the refrigeration cylinder, the refrigeration effe