Axial flow fan three-dimensional impeller with leaf vein structures and seagull-shaped splitter blades

Abstract

The invention discloses an axial flow fan three-dimensional impeller with leaf vein structures and seagull-shaped splitter blades. The axial flow fan three-dimensional impeller comprises a hub and further comprises curved-twisted blades and splitter blades, wherein a shaft sleeve is fixed on the hub by a connecting piece; the curved-twisted blades and splitter blades are fixedly connected onto the hub; the curved-twisted blades comprise suction surfaces and pressure surfaces; wing grooves are formed in the tops of the curved-twisted blades; leaf vein shaped grooves are formed in upper half parts of the pressure surfaces of the curved-twisted blades; the wing grooves are communicated with the leaf vein shaped grooves through air outlets; small wing protrusions are arranged at the tails of the suction surfaces of the curved-twisted blades; parabolic pinholes are formed in the curved-twisted blades; a splitter blade is arranged between every two adjacent curved-twisted blades; and the height of each splitter blade is smaller than one half of that of the curved-twisted blade. According to the axial flow fan three-dimensional impeller disclosed by the invention, the secondary flow phenomenon can be reduced, boundary layer separation is avoided, wake vortex of the blades is suppressed, turbulent dissipation and flow losses are reduced, and the axial flow fan three-dimensional impeller has the characteristics of high efficiency, excellent performance, low noise and energy conservation.

Description

technical field [0001] The invention relates to the design field of an axial flow fan, in particular to a novel three-way impeller of an axial flow fan with a vein-like structure and seagull-shaped splitter blades. Background technique [0002] The working principle of the axial flow fan is to use the mechanical energy input by the motor to increase the pressure of the gas to transport and discharge the gas. Axial flow fans play a role in various fields of the national economy, widely used in factories, mines, vehicles, boats and buildings, etc., and play an irreplaceable role in ventilation, dust removal and cooling. According to incomplete statistics, all countries in the country The annual power consumption of wind turbines accounts for 20% of the country's power generation. Many of the wind turbines are either old or low in efficiency, resulting in a serious waste of electricity. It can be seen that improving the performance of wind turbines to achieve energy conservatio...

AI Technical Summary

Problems solved by technology

In addition, the pressure difference between the pressure surface and the suction surface of the blade, the radial gap between the top of the blade and the casing, and the secondary flow generated by the radial flow in the boundary layer of the blade itself are also the main causes of the increase in fan loss and efficiency reduction.

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