Fan structure and axial fan
A fan and fan blade technology, which is applied to the components of pumping devices for elastic fluids, non-variable-capacity pumps, machines/engines, etc. Vortex and spoiler, overall cost reduction, weight reduction effect
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[0020] Such as figure 1 and figure 2 as shown, figure 1 It is a structural schematic diagram of a preferred embodiment of the fan structure of the present invention; figure 2 yes figure 1 The schematic diagram of the structure of the fan blade in the fan shown.
[0021] A fan structure proposed in this embodiment is an axial flow fan structure, including a hub 101 and three fan blades 102 installed on the hub 101. The three fan blades 102 are centered on the rotation center axis of the fan blade 102 and rotated at 120 degrees. The ±5 degrees are distributed at equal intervals, and the shape of the wind blade 102 is a sickle shape with a wide outside and a narrow inside, and is distorted in three-dimensional space. The number of blades 102 installed on the hub 101 can also be set to be more than three according to actual application scenarios.
[0022] Wherein, the edge at the tail of the sickle is the trailing edge 105 of the fan blade 102 , and the concave arc edge opp...
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