| 摘要 |
A three-dimensional air-fed windwheel (41) comprising the windwheel (41), wherein middle parts of front and rear side faces of the windwheel (41) form a complete axially forwardly convex umbrella shape, the front side face forms a boss (41a) and the rear side face forms a holding concave cavity position (41b). The windwheel sucks air in the manner of a turbine and supplies air centrifugally. A windwheel-type direct current fan using the windwheel has the technical effects of low noise, low wind resistance and high air blowing rate. In addition, a three-dimensional air-fed respirator using the windwheel (41) has the technical effects of lightness and thinness, little noise, stable fixedness and convenient assembly and disassembly. |
