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Roots blower noise five main causes

Noise is a kind of noise that makes people feel noisy and boring, and its degree sometimes varies with people's mood. But continuous noise can also cause pollution. But continuous noise can also cause pollution. The causes of noise of Roots blower are as follows:


1. The noise is caused by the rotation of the impeller


When the impeller rotates, it will produce friction or impact with air. The faster the rotating speed is, the higher the frequency of connecting air is, and the sharper the noise is. The faster the rotating speed is, the higher the frequency of connecting air is, and the sharper the noise is. This phenomenon is more obvious when the width or thickness of impeller increases. This phenomenon is more obvious when the width or thickness of impeller increases. The frequency of noise is composed of multiple frequencies, which are related to the speed of the fan. The frequency of noise is composed of multiple frequencies, which are related to the speed of the fan.


If the axial-flow fan is equipped with moving wing and stationary wing, the number of impellers should be different, so as not to cause greater noise resonance. If the axial-flow fan is equipped with moving wing and stationary wing, the number of impellers should be different, so as not to cause greater noise resonance. But whether it is axial-flow fan or centrifugal fan, where the wind speed is fast and the wind pressure is high, the noise generated is also large. But whether it is axial-flow fan or centrifugal fan, where the wind speed is fast and the wind pressure is high, the noise generated is also large.


2. Noise will also be generated due to vortex generated by impeller


During the operation of Roots blower, the back of the moving wing will produce eddy current, which will not only reduce the efficiency of the fan, but also produce noise. During the operation of Roots blower, the back of the moving wing will produce eddy current, which will not only reduce the efficiency of the fan, but also produce noise. In order to reduce this phenomenon, the installation angle of the impeller should not be too large, and the bending of the impeller should be smooth, and the sudden change should not be too large. In order to reduce this phenomenon, the installation angle of the impeller should not be too large, and the bending of the impeller should be smooth, and the sudden change should not be too large.

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3. Noise due to turbulence


When the air is flowing, if it encounters sharp obstacles, it is easy to produce turbulence. Although the turbulent flow is different from that of eddy current, it will also produce noise or very high frequency whistling sound, which will also cause efficiency loss for Roots blower. Although the turbulent flow is different from that of eddy current, it will also produce noise or very high frequency whistling sound, which will also cause efficiency loss for Roots blower.


4. It resonates with the air duct shell and causes noise


The joint between the air duct and the inner surface of Roots blower shell should be flat to avoid rough and uneven, which may cause tearing sound. The joint between the air duct and the inner surface of Roots blower shell should be flat to avoid rough and uneven, which may cause tearing sound. And because the connected pipeline will produce resonance, so that the subtle sound becomes bigger, resulting in greater noise. And because the connected pipeline will produce resonance, so that the subtle sound becomes bigger, resulting in greater noise. In the design, sometimes the air duct can be covered with sound proof material to reduce noise. In the design, sometimes the air duct can be covered with sound proof material to reduce noise.


5. Noise caused outside roots blower


In addition to the fixed noise of Roots blower, there are many noise sources. Such as: bearing due to insufficient precision, improper assembly or poor maintenance will cause abnormal noise. In addition to the fixed noise of Roots blower itself, there are many noise sources, such as: the bearing due to insufficient precision, improper assembly or poor maintenance will cause abnormal noise. The motor part also produces noise, some of which are caused by poor design or poor manufacturing quality control, but sometimes it is caused by internal and external cooling fans of Mada.


The motor part also produces noise, some of which are caused by poor design or poor manufacturing quality control, but sometimes it is caused by internal and external cooling fans of Mada. Gears and belts also produce noise due to friction. The noise produced by resonance of other structures can not be ignored, which is sometimes caused by imbalance of the body.


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