An axial-flow windwheel
An axial-flow wind and hub technology, which is applied to the components of pumping devices for elastic fluids, non-variable-capacity pumps, machines/engines, etc. Take away the heat of the outdoor unit, without considering the reduction of boundary layer separation, etc., to achieve the effects of low rotor weight and rotor manufacturing cost, reduced wake strength, low noise and motor load
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] In the figure, 1 is the axial flow rotor, 2 is the hub, 3 is the blade, 3a is the downstream side edge of the airflow, 3b is the concave part, D1 is the hub diameter, D2 is the outer diameter of the axial flow rotor, D3 is the blade The diameter of the circumference where the starting position A of the trailing edge depression is located, D4 is the circumference diameter of the position B where the blade trailing edge depression ends, Rm is the height of the blade, H1 is the maximum height of the depression part calculated from the lowest position C of the trailing edge of the blade 3, H2 is the height of the rotor blade calculated from the lowest position C of the trailing edge of the blade 3, δ is the depth of the depression, L is the length of the chord line of the blade, f is the point of the trailing edge of the blade top, k is the connecting...
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