axial fan
A technology of axial fans and fan blades, which is applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve problems such as the inability to improve the performance of axial fans as a whole, Achieve the effects of reducing vortex and turbulence, reducing weight and reducing radial flow
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[0019] like figure 1 shown, figure 1 It is a schematic diagram of the front structure of the preferred embodiment of the axial flow fan of the present invention.
[0020] An axial flow fan proposed in this embodiment includes a hub 101 and three fan blades 102 mounted on the hub 101. The three fan blades 102 are centered on the central axis of rotation of the fan blades 102, and are 120 degrees ± 5 degrees equal to each other. Spacing distribution, the outer shape of the fan blade 102 is a sickle shape with an outer width and an inner narrow shape, and is a three-dimensional space distortion shape.
[0021] The edge located at the tail of the sickle is the trailing edge 106 of the fan blade 102 , and the concave arc-shaped edge opposite the trailing edge 106 of the fan blade 102 and located on the tip side of the sickle is the leading edge 107 of the fan blade 102 .
[0022] In this embodiment, three trapezoidal grooves 103 , 104 and 105 are sequentially arranged on the trai...
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