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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(fēng)管道的噪聲有兩個(gè)來(lái)源，一個(gè)是機(jī)械振動(dòng)噪聲。這是由于在設(shè)備運(yùn)行時(shí)，風(fēng)向標(biāo)、風(fēng)扇和設(shè)備外殼高速振動(dòng)造成的噪音。另一個(gè)是空氣動(dòng)力噪音。這是通風(fēng)管道內(nèi)空氣流動(dòng)產(chǎn)生的主要噪聲源，也是通風(fēng)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(fēng)管噪音處理方法包括：

The noise treatment methods of ventilation pipe include:

風(fēng)管的彎頭

Elbow of air duct

當(dāng)空氣流經(jīng)管道彎頭時(shí)，可能會(huì)產(chǎn)生噪音。通過(guò)在前后風(fēng)道上設(shè)置風(fēng)道彎頭，可以降低噪音。濟(jì)南通風(fēng)管道廠家為您介紹，空氣動(dòng)力噪聲通過(guò)風(fēng)道彎頭時(shí)，經(jīng)過(guò)折射和吸收，噪聲會(huì)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(fēng)

Ceiling return air

換句話說(shuō)，安裝風(fēng)管的整個(gè)天花板空間就是一個(gè)回風(fēng)箱，這樣不僅可以減少噪音，也就是節(jié)省空間，還可以達(dá)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(guò)在管道上涂抹振動(dòng)控制涂料，可以減少振動(dòng)。另外，通過(guò)用隔音材料包裹風(fēng)道并吸收聲音，可以進(jìn)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(fēng)道需要依靠墻板，使用防震吊桿懸掛，以防止振動(dòng)的傳遞。以同樣的方式，接入電力設(shè)備的管道不僅要翻墻，還要使用軟連接，以減少振動(dòng)的傳播途徑。如果有必要，將風(fēng)管穿過(guò)墻壁，以提供振動(dòng)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(fēng)管變形

Air duct deformation

寶旺通風(fēng)認(rèn)為，除了上述的風(fēng)管噪聲控制措施外，還可以通過(guò)改變風(fēng)管本身的結(jié)構(gòu)來(lái)達(dá)到噪聲控制的目的。通風(fēng)管道改進(jìn)后，不僅管壁的振動(dòng)會(huì)大大減弱，而且氣流的脈動(dòng)聲也可以通過(guò)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(fēng)消聲器的新管道結(jié)構(gòu)使噪聲控制非常有用，一般來(lái)說(shuō)，不需要后期的噪聲控制措施。此外，在電機(jī)下面可以安裝一個(gè)長(zhǎng)的回風(fēng)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.