At present, most air conditioners use axial fan, which is a kind of general machine with large output, wide use and loud noise. It has become one of the main sources of noise pollution in urban environment. At present, from the point of view of energy and environmental protection, efficiency improvement and noise reduction have become two important indicators of wind turbine design. At present, the air flow noise and low efficiency of axial fan blades are common in the market overhead.

A new type of air conditioner with high fan efficiency and low noise is provided. The axial fan blade is mainly composed of the blade wheel shaft and the fan blade, which is characterized by a streamlined outer rib added on the outer edge end face of the wing fan blade, and the outer rib is vertically arranged with the fan blade end face.

The blade adopts integral structure, the overall weight is reduced by 20% compared with that before ribbing, reducing the cost; The blade type adopts good hub ratio, the blade adopts variable ring quantity as the optimization design method, and increases the blade outer diameter of the streamline outer rib airfoil surface on the blade to increase the relative sealing between the blade and the cylinder, so that the utility model has the characteristics of good aerodynamic performance, uniform flow, high efficiency and low noise.

The wind blade of axial flow fan is mainly composed of the blade shaft and the fan blade, which is characterized by streamlining on the outer end face of the blade, and vertical setting of the outer rib and the end face of the wind blade.