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

通風管道的噪聲有兩個來源，一個是機械振動噪聲。這是由于在設備運行時，風向標、風扇和設備外殼高速振動造成的噪音。另一個是空氣動力噪音。這是通風管道內空氣流動產生的主要噪聲源，也是通風管道噪聲處理的主題。

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.

通風管噪音處理方法包括：

The noise treatment methods of ventilation pipe include:

風管的彎頭

Elbow of air duct

當空氣流經管道彎頭時，可能會產生噪音。通過在前后風道上設置風道彎頭，可以降低噪音。濟南通風管道廠家為您介紹，空氣動力噪聲通過風道彎頭時，經過折射和吸收，噪聲會被大大衰減。

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.

吊頂回風

Ceiling return air

換句話說，安裝風管的整個天花板空間就是一個回風箱，這樣不僅可以減少噪音，也就是節省空間，還可以達到隔音的目的。

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

通過在管道上涂抹振動控制涂料，可以減少振動。另外，通過用隔音材料包裹風道并吸收聲音，可以進一步減少噪音的傳播。

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.

支架處理

Support treatment

風道需要依靠墻板，使用防震吊桿懸掛，以防止振動的傳遞。以同樣的方式，接入電力設備的管道不僅要翻墻，還要使用軟連接，以減少振動的傳播途徑。如果有必要，將風管穿過墻壁，以提供振動隔離和隔音密封。

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.

風管變形

Air duct deformation

寶旺通風認為，除了上述的風管噪聲控制措施外，還可以通過改變風管本身的結構來達到噪聲控制的目的。通風管道改進后，不僅管壁的振動會大大減弱，而且氣流的脈動聲也可以通過吸聲而大大減弱。使用這種帶有消聲彎頭、消聲靜壓箱和通風消聲器的新管道結構使噪聲控制非常有用，一般來說，不需要后期的噪聲控制措施。此外，在電機下面可以安裝一個長的回風口，作為維修考慮的檢修口。

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.