How can we achieve the sound insulation of ventilation ducts? Today, Baowang ventilation will give you a brief introduction.

通风管道的噪声有两个来源，一个是机械振动噪声。这是由于在设备运行时，风向标、风扇和设备外壳高速振动造成的噪音。另一个是空气动力噪音。这是通风管道内空气流动产生的主要噪声源，也是通风管道噪声处理的主题。

There are two sources of noise in ventilation ducts. One is mechanical vibration noise. This is due to the noise caused by the high-speed vibration of the wind vane, fan and equipment shell when the equipment is running. The other is aerodynamic noise. This is the main noise source generated by the air flow in the ventilation duct, and it is also the subject of noise treatment in the ventilation duct.

通风管噪音处理方法包括：

The noise treatment methods of ventilation pipe include:

风管的弯头

Elbow of air duct

当空气流经管道弯头时，可能会产生噪音。通过在前后风道上设置风道弯头，可以降低噪音。济南通风管道厂家为您介绍，空气动力噪声通过风道弯头时，经过折射和吸收，噪声会被大大衰减。

Noise may be generated when air flows through pipe bends. The noise can be reduced by setting air duct elbows on the front and rear air ducts. Jinan ventilation duct manufacturer introduces that when aerodynamic noise passes through the air duct elbow, the noise will be greatly attenuated after refraction and absorption.

吊顶回风

Ceiling return air

换句话说，安装风管的整个天花板空间就是一个回风箱，这样不仅可以减少噪音，也就是节省空间，还可以达到隔音的目的。

In other words, the whole ceiling space where the air duct is installed is a return air box, which can not only reduce noise, that is, save space, but also achieve the purpose of sound insulation.

降噪和吸音

Noise reduction and sound absorption

通过在管道上涂抹振动控制涂料，可以减少振动。另外，通过用隔音材料包裹风道并吸收声音，可以进一步减少噪音的传播。

Vibration can be reduced by applying vibration control coating to the pipeline. In addition, the transmission of noise can be further reduced by wrapping the air duct with sound insulation materials and absorbing sound.

支架处理

Support treatment

风道需要依靠墙板，使用防震吊杆悬挂，以防止振动的传递。以同样的方式，接入电力设备的管道不仅要翻墙，还要使用软连接，以减少振动的传播途径。如果有必要，将风管穿过墙壁，以提供振动隔离和隔音密封。

The air duct needs to rely on the wall panel and be hung with shockproof suspenders to prevent the transmission of vibration. In the same way, the pipes connected to power equipment should not only climb over the wall, but also use soft connections to reduce the transmission path of vibration. If necessary, pass the duct through the wall to provide vibration isolation and acoustic seal.

风管变形

Air duct deformation

宝旺通风认为，除了上述的风管噪声控制措施外，还可以通过改变风管本身的结构来达到噪声控制的目的。通风管道改进后，不仅管壁的振动会大大减弱，而且气流的脉动声也可以通过吸声而大大减弱。使用这种带有消声弯头、消声静压箱和通风消声器的新管道结构使噪声控制非常有用，一般来说，不需要后期的噪声控制措施。此外，在电机下面可以安装一个长的回风口，作为维修考虑的检修口。

Baowang ventilation believes that in addition to the above air duct noise control measures, the purpose of noise control can also be achieved by changing the structure of the air duct itself. After the improvement of ventilation duct, not only the vibration of pipe wall will be greatly weakened, but also the pulsating sound of air flow can be greatly weakened by sound absorption. The use of this new pipe structure with silencing elbow, silencing static pressure box and ventilation muffler makes noise control very useful. Generally speaking, no later noise control measures are required. In addition, a long air return outlet can be installed under the motor as an access port for maintenance.