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

An axial flow fan and ternary impeller technology, applied in pump components, mechanical equipment, non-variable-capacity pumps, etc., to suppress secondary flow, reduce eddy current noise, and improve boundary layer separation

Active Publication Date: 2017-05-24
杭州宏德智能装备科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment 1

[0030] Embodiment 1. A new three-dimensional impeller for an axial flow fan with a vein-shaped structure and a non-uniform tail, as shown in the figure, includes a hub, a twisted blade 1 fixedly connected to the hub, a splitter blade 2, a bushing 3 and a connecting piece 4.

[0031] The curved and twisted blade 1 includes a suction surface 18 and a pressure surface 19. The top of the suction surface 18 of the curved and twisted blade 1 is provided with a vein-shaped groove 15, and the rear end of the curved and twisted blade 1 is provided with a small wing protrusion 13 and a dense small wing 16. The groove 15 includes at least two veins, the installation angle at the root of the curved and twisted blade 1 is large, and the installation angle at the top is small (the installation angle is the angle between the plane of rotation at the radius r of the curved and twisted blade 1 and the chord length of the airfoil. The angle is represented by β1 and β2 in the figure), to ensure ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/32F04D29/38F04D29/66F04D29/68
CPCF04D29/327F04D29/384F04D29/386F04D29/388F04D29/666F04D29/667F04D29/681Y02E10/72
Inventor 孙菁李红军杨鹏杨徽窦华书徐金秋王天垚
Owner 杭州宏德智能装备科技有限公司
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