通风设备该如何减低噪音？

发布人：http://www.sftfgd.com   发布时间：2018-05-15 11:58:28

     通风设备是由电机带动的，因为是机械设备，所以会存在一些噪音。很多人对通风设备的噪音很是反感，那在使用通风设备时如何降低噪音呢？
    Ventilator is driven by motor, because it is mechanical equipment, so there will be some noise. Many people are disgusted with the noise of ventilation equipment. How to reduce noise when using ventilation equipment?
    选择合理的机型。在噪声控制要求高的场合，应选用低噪声通风设备。不同型号的通风设备，在同样的风量、风压下，机翼型叶片的离心通风设备噪声小，前向板型叶片的离心噪声大。
    Choose a reasonable model. When noise control requirements are high, low noise ventilation equipment should be selected. Under the same air volume and wind pressure, the centrifugal fans of the airfoil blades have little noise and the centrifugal noise of the forward blade is large under different air volume and wind pressure.
    通风设备的工作效率。同一型号的通风设备效率越高，噪声越小。通风设备室的进、排气通道采取消声措施。
    The efficiency of the ventilation equipment. The higher the efficiency of the same type of ventilation, the smaller the noise. The intake and exhaust passages of the ventilation room adopt noise elimination measures.

    降低转速可降低噪声。在可能条件下适当降低通风设备的转速，通风设备的旋转噪声与叶轮圆周速度10次方成比例，涡流噪声与叶轮圆周速度5次方成比例。
    Reducing the speed can reduce the noise. Under the possible conditions, the rotational speed of the ventilator is properly reduced. The rotating noise of the ventilator is proportional to the 10 times of the circumferential velocity of the impeller, and the eddy noise is proportional to the 5 times of the circumference velocity of the impeller.
    通风设备进、出口的噪声级是通风理、风压增加而增大的。因此，设计通风系统时，应尽量减少系统的压力损失。当通风系统的总风量和压力损失较大时，可将其分为小系统。
    The noise level of inlet and outlet of ventilation equipment increases with ventilation and wind pressure increasing. Therefore, when designing the ventilation system, the pressure loss of the system should be minimized. When the total air volume and pressure loss of ventilation system are large, it can be divided into small systems.
    气流在管道内的流速不宜过高，以免引起再生噪声。确定管道内气流流速应根据不同要求按有关规定选取。
    The velocity of the airflow in the pipeline should not be too high, so as not to cause regenerative noise. The flow velocity in the pipeline should be selected according to different requirements according to the relevant regulations.
    此外，还要注意通风设备与电动机的传动方式。采用直联传动的通风设备噪声较小，用联轴器的次之，用没有接缝的三角皮带传动的稍差。通风设备应配用低噪声的电动机。
    In addition, we should also pay attention to the transmission mode of ventilation equipment and motor. The ventilation system with direct connection transmission is the least noise, followed by the coupling and slightly worse with the no joint triangle belt drive. A low noise motor should be used for the ventilation equipment.
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