ENERGY-SAVING AXIAL-FLOW VENTILATOR

The utility model relates to an axial-flow ventilator. The utility model collects machine bodies whose current limiting diffusion is collected into one body. Not only the utility model simplifies structure, but also the utility model enhances static pressure efficiency, and the utility model is convenient for the manufacturing and installation. The geometric shape of the utility model is connected into one body to constitute by three parts of the axisymmetric wind collecting device (I), the cylinder (II) and the square body (III). Not only the barrel type wheel hub and the sealing flow guide cover of the utility model close the windward side of the electric motor, and the barrel type wheel hub and the sealing flow guide cover of the utility model prevent the corrosive gas from invading the inner part of the electric motor, but also the incoming flow situation of the blade wheel is improved further. The efficiency of the blade wheel is enhanced.