Air conditioner and shaft-core-free axial flow fan thereof

The utility model relates to the field of fans, in particular to an air conditioner and a shaft-core-free axial flow fan thereof. An axial flow fan without a shaft core comprises an outer rotor motor and axial flow fan blades. The outer rotor motor comprises a motor stator ring and a motor rotor ring, and the motor rotor ring is rotationally arranged on the inner side of the motor stator ring; the axial flow fan blade comprises a plurality of axial flow blades which are arranged on the inner side of the motor rotor ring at intervals in the circumferential direction, the outer edges of the axial flow blades are connected with the inner wall of the motor rotor ring to achieve circumferential linkage, and an air passing opening is formed between every two adjacent axial flow blades. The shaft-core-free axial flow fan better conforms to the acting characteristic of the axial flow fan blades, and under the same acting condition, the fan blades are smaller in mass and lower in cost; the structure is simple, and dis