Air conditioner fan impeller with blades provided with sawtooth tail edges

Abstract

The invention relates to the technical field of fan impellers, and particularly discloses an air conditioner fan impeller with blades provided with sawtooth tail edges. The air conditioner fan impeller comprises an air conditioner fan impeller hub, the fan blades, tail edge sawtooth structures and front edge sawtooth structures, wherein one side of the air conditioner fan impeller hub is connectedwith the multiple fan blades, one side of each fan blade is provided with a tail edge sawtooth structure, and the other side of each fan blade is provided with a tail edge sawtooth structure; the front edge sawtooth structures are sequentially arranged from the blade roots to the blade tops of the fan blades according to the radian of the front edges, and the tail edge sawtooth structures and thefront edge sawtooth structures are each composed of a plurality of sawteeth which are sequentially arranged; a connecting base is arranged at one end of the impeller hub of an air conditioner fan, aplurality of horizontally-arranged mounting rods are connected to one side of the connecting base and penetrate through a mounting base, a horizontally-arranged connecting shaft is connected to one side of the mounting base, and the trailing edge sawtooth structures arranged on the fan blades can weaken trailing edges on the downstream portions of the blades, so that trailing edge vortexes are broken, the vortex noise is effectively reduced, and the fan efficiency under the medium-small flow working condition can be improved.

Description

technical field [0001] The invention relates to the technical field of fan impellers, in particular to an air conditioner fan impeller with sawtooth trailing edges on blades. Background technique [0002] Air-conditioning equipment is an indispensable part of people in modern life, and its application is also very extensive. Although air-conditioning technology has matured day by day, its noise problem has not been well resolved. For the noise reduction technology of air-conditioning indoor units, a lot of research work has been done at home and abroad, and the results are remarkable, but less attention has been paid to the noise of outdoor units. [0003] At present, most central air-conditioning centrifugal fans are noisy. Without special treatment, the noise measured at a distance of about 1m from the fan outlet can reach 90-110dB; the noise of the outdoor unit of the air conditioner includes mechanical noise, motor noise and aerodynamic noise. The main source of outdoo...

AI Technical Summary

Problems solved by technology

Although air-conditioning technology has matured day by day, its noise problem has not been well resolved

For the noise reduction technology of air-conditioning indoor units, a lot of research work has been done at home and abroad, and the results are remarkable, but less attention has been paid to the noise problem of outdoor units

[0003] At present, most central air-conditioning centrifugal fans are noisy. Without special treatment, the noise measured at a distance of about 1m from the fan outlet can reach 90-110dB; the noise of the outdoor unit of the air conditioner includes mechanical noise, motor noise and aerodynamic noise. , the main source of outdoor unit noise is the aerodynamic noise of the fan, which is composed of eddy current noise and discrete noise; and the existing fan impellers are connected to the rotating shaft by welding, which brings inconvenience to the maintenance and cleaning of the impeller

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