During the use of roots blower, various unnecessary noises are often reflected by the first-line operation, which affects the use experience and effect of roots blower, and even causes unnecessary economic losses and loss of reputation.
1. Noise due to impeller rotation
When the impeller rotates, friction or impact will occur with air. The faster the speed is, the higher the frequency of the connecting air is, and the sharper the noise is. The faster the speed is, the higher the frequency of the connecting air is, and the sharper the noise is. This phenomenon is more obvious when the width or thickness of the impeller increases. This phenomenon is more obvious when the width or thickness of the impeller increases. The frequency of noise is compounded by a variety of frequencies, which are related to the speed of the fan. The frequency of noise is compounded by a variety of frequencies, which are related to the speed of the fan.
If the axial flow fan is equipped with moving wing and static wing, the number of impellers should be different to avoid greater noise resonance. If the axial flow fan is equipped with moving wing and static wing, the number of impellers should be different to avoid greater noise resonance. However, whether it is axial flow or centrifugal fan, the noise generated by fast wind speed and high wind pressure is also large. However, whether it is axial flow or centrifugal fan, the noise generated by fast wind speed and high wind pressure is also large.
2. Noise will also be generated due to vortex generated by impeller
During the operation of the fan, vortex will be generated on the back of its moving wing, which will not only reduce the efficiency of the fan, but also generate noise. During the operation of the fan, vortex will be generated on the back of its moving wing, which will not only reduce the efficiency of the fan, but also generate noise. In order to reduce this phenomenon, the installation angle of the impeller shall not be too large, and the impeller shall be bent smoothly, and the sudden change shall not be too large. In order to reduce this phenomenon, the installation angle of the impeller shall not be too large, and the impeller shall be bent smoothly, and the sudden change shall not be too large.
3. Noise due to turbulence
When the air is flowing, if it encounters sharp obstacles, turbulence will easily occur. Although this turbulence is different from eddy current, it will also produce noise, or noise reduction with high frequency, which will also cause efficiency loss for fans. Although this turbulence is different from eddy current, it will also produce noise, or noise reduction with high frequency, which will also cause efficiency loss for fans.
4. Resonance with air duct shell causes noise
The joint between the air duct and the inner surface of the fan housing shall be flat to avoid the sound of tearing caused by roughness. The joint between the air duct and the inner surface of the fan housing shall be flat to avoid the sound of tearing caused by roughness. However, the connected pipeline will produce resonance, which will make the subtle sound bigger and cause greater noise. However, the connected pipeline will produce resonance, which will make the subtle sound bigger and cause greater noise. During design, sometimes the air duct can be covered with sound proof materials to reduce noise. During design, sometimes the air duct can be covered with sound proof materials to reduce noise.
5. Noise caused outside the fan
In addition to the fixed noise of the fan itself, there are many noise sources. For example, abnormal noise may be caused by insufficient precision, improper assembly or poor maintenance of bearings. In addition to the fixed noise of the fan itself, there are many noise sources, such as abnormal noise caused by insufficient precision, improper assembly or poor maintenance of bearings. The motor part will also produce noise, some of which are caused by poor design or poor manufacturing quality control, but sometimes it is caused by the internal and external cooling fans of Madar.
Text term label: Roots blower
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