The utility model relates to the field of impellers, in particular to a
dust collector impeller. Comprising a wheel disc, the wheel disc is provided with a plurality of blades, and the blades are spirally arranged around the axis of the wheel disc; air inlets are formed in one sides of the wheel disc and the blades, and air outlets are formed in the other sides; an
airflow channel is formed between the air inlet and any air outlet; wherein each blade is provided with a wheel disc line and a wheel cover line, and the wheel disc lines and the wheel cover lines are arranged to be Bezier curves; an included angle theta is formed between a connecting line between the end points, close to the air outlet, of the wheel disc line and the wheel cover line and the axis of the
impeller, and the included angle theta enables the blades to have parts exceeding the outer edge face of the wheel disc on plane projections, perpendicular to the axis, of the blades and the wheel disc. According to the
impeller, the blades and the wheel disc of the impeller are manufactured in an integrated forming mode, compared with traditional plug-in type blades,
assembly tolerance does not exist between the blades, the dynamic load is reduced, and the impeller has the higher rotating speed.