Axial flow rotor blade

Abstract

The invention discloses an axial flow rotor blade. The axial flow rotor blade comprises at least two vanes (3) arranged on a hub (2), wherein each vane (3) is provided with a hole area with a plurality of through holes (4). The vanes (3) are distributed on the hub (2) by taking a rotation central axis as a center at equal or unequal intervals; and the area of a vane outer edge (31) of each vane (3) is the hole area. When the axial flow rotor blade rotates, the hole structure of the adjacent area of each vane outer edge ensures that air on the pressure surface of each vane flows into a suction surface through the through holes, so that kinetic energy of air on the suction surface of each vane is increased, and the growth of a boundary layer is inhibited; eddy noise is effectively reduced, and the voice is more soft and comfortable; and meanwhile, by the hole structure of the adjacent area of each vane outer edge, the weight of the rotor blade and the load of a motor are reduced, and the cost of the rotor blade and the powder of the motor are reduced. The axial flow rotor blade is particularly suitable for an air conditioner outdoor unit.

Description

technical field [0001] The invention relates to an axial flow wind wheel, in particular to an axial flow wind wheel suitable for an air conditioner outdoor unit. Background technique [0002] Most of the existing air-conditioning outdoor units use axial-flow wind wheels for heat dissipation. The axial-flow wind wheels include two or more blades arranged on the hub, and the blades are distributed at equal or unequal intervals around the center axis of rotation of the wind wheel. On the hub, when the conventional blade structure axial flow wind rotor rotates, it is easy to cause the accumulation of low-energy fluid on the suction surface of the blade, and form a large vortex on the suction surface of the blade, resulting in high aerodynamic noise when the wind rotor is running . According to the experimental analysis, 50%-70% of the noise of the outdoor unit is caused by the aerodynamic noise of the axial flow wind wheel. Contents of the invention [0003] The purpose of t...

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Problems solved by technology

[0002] Most of the existing air-conditioning outdoor units use axial-flow wind wheels for heat dissipation. The axial-flow wind wheels include two or more blades arranged on the hub, and the blades are distributed at equal or unequal intervals around the center axis of rotation of the wind wheel. On the hub, when the conventional blade structure axial flow wind rotor rotates, it is easy to cause the accumulation of low-energy fluid on the suction surface of the blade, and form a large vortex on the suction surface of the blade, resulting in high aerodynamic noise when the wind rotor is running

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