AXIAL-FLOW FAN STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide an axial-flow fan device for increasing the efficiency of the fan by utilizing the air right above a hub. SOLUTION: The axial-flow fan structure includes a hub having an upper surface and a periphery, and a plurality of blades mounted on the periphery of the hub. The upper part of the top surface of the hub is surrounded by edges of the plurality of blades to constitute the lateral air-intake part of the axial-flow fan structure. The edges of the plurality of blades constitute the lateral air-intake surface around the lateral air-intake part of the plurality of blades. COPYRIGHT: (C)2008,JPO&INPIT