Axial fan
A technology of axial flow and fan, applied in axial flow pumps, non-variable pumps, non-displacement pumps, etc., can solve the problem of high operating noise of axial flow fans, achieve the effect of reducing operating noise and suppressing pressure changes
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[0047] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be described in detail below together with the accompanying drawings.
[0048] Please refer to figure 2 and 3 Shown is the fan wheel 1 of an embodiment of the axial flow fan of the present invention, the fan wheel 1 includes a hub 11 and several fan blades 12, and the several fan blades 12 are connected to the hub 11. The hub 11 has a rotation axis 111 , the rotation axis 111 is parallel to the axial direction of the fan wheel 1 , and the rotation axis 111 passes through the center of the hub 11 . Each fan blade 12 is inclined to the axial direction of the fan wheel 1, and each fan blade 12 has an outer edge 121 in the radial direction of the fan wheel 1, and the outer edge 121 is located where the fan blade 12 is far away from the hub 11. side. The two ends of the outer edge 121 in the axial directio...
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