Axial flow fan ternary impeller with vein-shaped structure and nonuniform empennage

Abstract

The invention discloses an axial flow fan ternary impeller with a vein-shaped structure and a nonuniform empennage. The axial flow fan ternary impeller comprises a hub, and a connecting piece for a shaft sleeve fixed on the hub. The axial flow fan ternary impeller further comprises twisted blades and splitter blades fixedly connected to the hub; the twisted blades include suction surfaces and pressure surfaces; wing-shaped grooves are formed in the tops of the twisted blades; vein-shaped grooves are formed in the upper half parts of the pressure surfaces of the twisted blades; the wing-shaped grooves are communicated with the vein-shaped grooves through exhaust ports; winglet projections and dense winglets are arranged at the tail parts of the suction furnaces of the twisted blades; the dense winglets are arranged on two sides of the winglet projections; parabola small holes are formed in the twisted blades; the splitter blades are arranged between two adjacent twisted blades; and the heights of the splitter blades are smaller than the heights of the twisted blades by one half.

Description

technical field [0001] The invention relates to the field of axial flow fan design, in particular to a novel three-dimensional impeller of an axial flow fan with a vein-like structure and a non-uniform tail. 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 conservation is im...

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to propose a new type of axial flow fan with vein-like structure and non-uniform tail by controlling and reducing secondary flow, boundary layer separation, wake vortex and eddy current noise. Element impeller

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