消聲(sheng)(sheng)器(qi)是利(li)用(yong)聲(sheng)(sheng)的(de)吸收、反射、干涉等(deng)原理，降(jiang)低通風與空調系統(tong)中(zhong)氣流噪聲(sheng)(sheng)的(de)裝置。根(gen)據(ju)消聲(sheng)(sheng)原理的(de)不同可以(yi)分(fen)為(wei)阻(zu)性(xing)、抗性(xing)、共(gong)振型(xing)(xing)和復合型(xing)(xing)等(deng)。下面為(wei)大家介紹一下消聲(sheng)(sheng)器(qi)分(fen)類(lei)有哪些(xie)。

Silencers are devices that use principles such as sound absorption, reflection, and interference to reduce airflow noise in ventilation and air conditioning systems. According to the different principles of noise reduction, it can be divided into resistance, resistance, resonance, and composite types. Below, we will introduce the classification of mufflers.

　　一、阻性消聲器

1、 Resistive muffler

　　阻性(xing)消聲(sheng)(sheng)器利用(yong)吸聲(sheng)(sheng)材(cai)料(liao)的(de)吸聲(sheng)(sheng)作用(yong)而(er)消聲(sheng)(sheng)的(de)。其構造是把吸聲(sheng)(sheng)材(cai)料(liao)固定在(zai)氣流(liu)流(liu)動的(de)管道內壁，或按一定方式排列在(zai)管道或殼體內構成阻性(xing)消聲(sheng)(sheng)器，吸聲(sheng)(sheng)材(cai)料(liao)能夠(gou)把入射(she)在(zai)其上的(de)聲(sheng)(sheng)能部分地吸收(shou)掉。聲(sheng)(sheng)能之所以能被吸收(shou)，是由于吸聲(sheng)(sheng)材(cai)料(liao)的(de)多孔性(xing)和松散性(xing)。

A resistive muffler uses the sound absorption effect of sound-absorbing materials to eliminate noise. Its structure is to fix the sound-absorbing material on the inner wall of the airflow pipeline, or arrange it in a certain way inside the pipeline or shell to form a resistive muffler. The sound-absorbing material can partially absorb the sound energy incident on it. The reason why sound energy can be absorbed is due to the porosity and looseness of sound-absorbing materials.

　　它對(dui)于高頻(pin)(pin)和中頻(pin)(pin)噪聲效果(guo)較好，但對(dui)低頻(pin)(pin)噪聲消聲性能較差。

It has good effects on high-frequency and intermediate frequency noise, but poor noise reduction performance on low-frequency noise.

　　二(er)、共振型消聲器

2、 Resonant silencer

　　吸聲(sheng)材(cai)料(liao)通常對(dui)低頻噪聲(sheng)的(de)(de)吸收(shou)能(neng)(neng)力很低，單(dan)靠增(zeng)加吸聲(sheng)材(cai)料(liao)的(de)(de)厚度來提高吸聲(sheng)效果并不經濟(ji)，為了(le)改善低頻噪聲(sheng)的(de)(de)吸聲(sheng)效果，通常采用(yong)(yong)共(gong)振(zhen)(zhen)型消(xiao)聲(sheng)器(qi)。共(gong)振(zhen)(zhen)型消(xiao)聲(sheng)器(qi)的(de)(de)形(xing)式是利(li)用(yong)(yong)管(guan)道開(kai)孔(kong)(kong)與(yu)共(gong)振(zhen)(zhen)腔相(xiang)連(lian)接，利(li)用(yong)(yong)小孔(kong)(kong)處的(de)(de)空(kong)氣柱和空(kong)腔內的(de)(de)空(kong)氣構成了(le)彈性共(gong)振(zhen)(zhen)系統(tong)，當外界噪聲(sheng)頻率和此(ci)共(gong)振(zhen)(zhen)系統(tong)的(de)(de)固有頻率相(xiang)同時，小孔(kong)(kong)中的(de)(de)空(kong)氣柱發(fa)生(sheng)共(gong)振(zhen)(zhen)并與(yu)孔(kong)(kong)壁(bi)發(fa)生(sheng)劇烈摩擦，摩擦可(ke)以消(xiao)耗(hao)聲(sheng)能(neng)(neng)，從而達到消(xiao)聲(sheng)的(de)(de)目的(de)(de)。

Sound absorbing materials usually have a low absorption capacity for low-frequency noise. It is not economical to improve the sound absorption effect solely by increasing the thickness of the sound absorbing material. In order to improve the sound absorption effect of low-frequency noise, resonant silencers are usually used. The form of resonant muffler is connected to the resonant cavity through a pipeline opening, and an elastic resonance system is formed by using the air column at the small hole and the air inside the cavity. When the external noise frequency is the same as the natural frequency of the resonance system, the air column in the small hole resonates and experiences severe friction with the hole wall. Friction can consume sound energy, thereby achieving the purpose of noise reduction.

　　這種(zhong)消聲器具有較強的頻(pin)率(lv)選擇性，即有效的頻(pin)率(lv)范圍很(hen)窄，一般對于低頻(pin)消聲可以(yi)產生較大的衰減。其(qi)氣流阻力小(xiao)，但因(yin)有共振(zhen)腔而使結構偏大。

This type of muffler has strong frequency selectivity, that is, the effective frequency range is very narrow, and generally can produce significant attenuation for low-frequency noise reduction. Its airflow resistance is small, but the structure is larger due to the presence of a resonant cavity.

　　三、抗性消聲器

3、 Resistance silencer

　　抗(kang)性消聲器由管和(he)小室相連(lian)而成，該消聲器使利用風管截面(mian)的(de)突然改(gai)變(bian)而使聲波向(xiang)聲源方向(xiang)反射回去而起到消聲作用。

A resistance muffler is composed of a tube connected to a small chamber, which uses a sudden change in the cross-section of the air duct to reflect sound waves back in the direction of the sound source, thus playing a silencing role.

　　該消(xiao)聲(sheng)(sheng)器(qi)對(dui)中、低噪聲(sheng)(sheng)有(you)(you)較好的消(xiao)聲(sheng)(sheng)效果，結構簡單，由(you)于(yu)不使用吸(xi)聲(sheng)(sheng)材料，因而不受(shou)高溫和腐蝕性氣體的影響。低頻噪聲(sheng)(sheng)有(you)(you)一定效果。

This muffler has a good noise reduction effect on medium and low noise levels, with a simple structure. As it does not use sound-absorbing materials, it is not affected by high temperatures and corrosive gases. Eliminating low-frequency noise has a certain effect.

　　四、復合(he)型消聲器

4、 Composite muffler

　　復合型(xing)消聲器集中了(le)阻(zu)性和膨(peng)脹型(xing)消聲器的(de)優點，對低頻(pin)到高(gao)頻(pin)區噪聲均具有良(liang)好的(de)消聲效果。此外對于不能使用纖維(wei)吸聲材料的(de)空(kong)調(diao)(diao)系統（如凈(jing)化空(kong)調(diao)(diao)工(gong)程(cheng)），用金屬（鋁等）結構的(de)微穿孔板消聲器可(ke)獲(huo)得良(liang)好的(de)效果。

Composite silencers combine the advantages of resistive and expansion silencers, and have good noise reduction effects in the low-frequency to high-frequency range. In addition, for air conditioning systems that cannot use fiber sound-absorbing materials (such as purification air conditioning engineering), using micro perforated plate silencers with metal (aluminum, etc.) structures can achieve good results.

以上是關于 山東通風管道加工 的介紹，若想了解相關知識可請點擊：//wyras.cn 我們將(jiang)會全(quan)心全(quan)意為(wei)您提(ti)供滿(man)分服(fu)務，歡(huan)迎您的來電(dian)！

The above is an introduction to the processing of ventilation ducts in Shandong. If you want to learn more about related knowledge, please click: //wyras.cn We will wholeheartedly provide you with full score service. Welcome to call us!

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