Axial flow fan with reinforcing rib structure
An axial flow fan and reinforcing rib technology, which is applied to the components of the pumping device for elastic fluid, non-variable displacement pump, machine/engine, etc. Achieve the effect of reducing risk, reducing blade deformation, and increasing strength and stiffness
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no. 1 example
[0026] see Figure 1-Figure 3 , an axial flow fan with a rib structure, comprising a blade 1, the blade 1 is respectively provided with more than one first rib 2 and second rib 3 in the longitudinal direction and the transverse direction, so that several ribs are formed on the blade 1 Bosses, and an airflow guiding area is formed between two adjacent bosses; wherein, more than one second rib 3 extends from one or both sides of the first rib 2, and the first rib 2 and the second rib 3 Spline curves in arc shape or polyline combination respectively. Polylines include arcs and lines.
[0027] The first rib 2 and the second rib 3 increase the strength and rigidity of the blade 1 , reduce the deformation of the blade during the operation of the axial flow fan, and reduce the risk of the blade 1 being broken.
[0028] The first and second ribs 2, 3 and the small boss structure on the surface of the blade 1 will generate turbulence when the blade 1 rotates, thereby destroying the b...
no. 2 example
[0033] see Figure 4 An axial flow fan with rib structure is different from the first embodiment in that the second rib 3 on one side of the first rib 2 is provided with a third rib 4, and the third rib 4 is longitudinally arranged on the blade 1 on.
[0034] The cross-sections of the first, second and third ribs 2, 3, and 4 are rectangular, stepped, triangular, semicircular or polygonal, and the dimensions of the first, second, and third ribs 2, 3, and 4 are respectively = 1-3 times of the maximum thickness of the blade 1, the cross-sectional area of the second rib 3=50%-70% of the cross-sectional area of the first rib 2, the third rib 4=25%-50% of the first rib 2 Sectional area.
[0035] A third rib 4 is connected between two adjacent second ribs 3 on one side of the first rib 2 , so that two adjacent second ribs 3 and third ribs 4 form a closed loop.
[0036] The third reinforcing rib 4 is separated from the 1 / 2 of the second reinforcing rib 3 on the side of the firs...
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