Patent ID: 11939990
Assignee: CORETRONIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A fan structure, comprising a center portion, a plurality of fan blades, and a fixing ring, wherein
the center portion comprises a bottom surface and a center shaft, wherein the center shaft is perpendicular to the bottom surface, and a direction in which the center shaft extends is an axial direction;
the fan blades are mutually separated and connected to the bottom surface of the center portion and are disposed around the axial direction, wherein each of the fan blades has a height, and the height is parallel to the axial direction, wherein each of the fan blades has a first end being close to the center shaft and a second end being relatively away from the center shaft; and
the fixing ring simultaneously contacts the fan blades at a side of the fan blades being away from the center shaft and is disposed within a range of 40% to 80% of the height of each of the fan blades with the bottom surface of the center portion as a reference surface along the axial direction;
wherein in a radial direction, a distance between an inner periphery of the fixing ring and the center shaft is less than a distance between the second end of each of the fan blades and the center shaft, and a distance between an outer periphery of the fixing ring and the center shaft is greater than the distance between the second end of each of the fan blades and the center shaft; and
wherein the center shaft is equidistant from any positon of the inner periphery of the fixing ring in the radial direction, and the radial direction is perpendicular to the axial direction.