Patent ID: 11209019

Abstract:
A fan impeller includes a hub, a plurality of annular blades, and a plurality of spacers. The annular blades are stacked along an axial direction of the hub and disposed around the outer periphery of the hub. The extension directions of the annular blades are perpendicular to the axial direction of the hub. Each of the spacers is disposed between the two adjacent annular blades. Each of the annular blades has an inner periphery. A gap is provided between the inner periphery and the hub. Each of the annular blades further includes a plurality of spokes and an inner ring, the inner ring is disposed on and connected to the outer periphery of the hub, and two ends of the spoke are connected to the inner periphery and the inner ring of the annular blade. The spacers are separately disposed on the inner rings of the annular blades, respectively.