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簡介

阻(zu)性消聲(sheng)(sheng)器是生產的(de)一種吸(xi)收型(xing)消聲(sheng)(sheng)器，根據氣(qi)流(liu)通道結構(gou)的(de)不同(tong)，一般分(fen)為(wei)(wei)直管式(shi)(shi)、片(pian)式(shi)(shi)、折板(ban)式(shi)(shi)、蜂窩式(shi)(shi)、聲(sheng)(sheng)流(liu)式(shi)(shi)、迷宮式(shi)(shi)和彎頭式(shi)(shi)等。阻(zu)性消聲(sheng)(sheng)器是利用(yong)聲(sheng)(sheng)波在多孔(kong)性吸(xi)聲(sheng)(sheng)材料(liao)傳播時(shi)，受摩擦和粘(zhan)滯阻(zu)力，將聲(sheng)(sheng)能(neng)轉化為(wei)(wei)熱(re)能(neng)耗散掉，從而達(da)到消聲(sheng)(sheng)降音的(de)目(mu)的(de)。它是所有消聲(sheng)(sheng)器中應用(yong)最為(wei)(wei)廣泛的(de)一類消聲(sheng)(sheng)器。

抗性消(xiao)聲(sheng)(sheng)(sheng)器(qi)它與(yu)阻性消(xiao)聲(sheng)(sheng)(sheng)器(qi)消(xiao)聲(sheng)(sheng)(sheng)降噪原理(li)不同，它不能直接吸收(shou)聲(sheng)(sheng)(sheng)能，而是利用管道(dao)上突(tu)變(bian)的界面或旁接共振(zhen)腔，使沿(yan)管道(dao)傳播的某些頻率聲(sheng)(sheng)(sheng)波(bo)，在突(tu)變(bian)的界面處發生反射(she)、干涉等(deng)現象(xiang)，從而達到消(xiao)聲(sheng)(sheng)(sheng)降音的目的。分為擴張室式消(xiao)聲(sheng)(sheng)(sheng)器(qi)及共振(zhen)式消(xiao)聲(sheng)(sheng)(sheng)器(qi)。

因在實際(ji)噪(zao)聲控制工(gong)程中，噪(zao)聲以寬頻帶居多，通常將(jiang)阻(zu)性吸音降噪(zao)聲及抗性消聲降音結構組合起(qi)來，以控制高強度的寬頻帶噪(zao)聲  。

分類

風(feng)(feng)(feng)機(ji)消(xiao)(xiao)聲(sheng)器(qi)分為(wei)：離心風(feng)(feng)(feng)機(ji)消(xiao)(xiao)聲(sheng)器(qi)、羅茨風(feng)(feng)(feng)機(ji)消(xiao)(xiao)聲(sheng)器(qi)、鼓風(feng)(feng)(feng)機(ji)消(xiao)(xiao)聲(sheng)器(qi)、軸流風(feng)(feng)(feng)機(ji)消(xiao)(xiao)聲(sheng)器(qi)。風(feng)(feng)(feng)機(ji)消(xiao)(xiao)音器(qi)主(zhu)要用于(yu)降低各種風(feng)(feng)(feng)機(ji)風(feng)(feng)(feng)口、風(feng)(feng)(feng)道和封閉式(shi)機(ji)房進風(feng)(feng)(feng)口的空氣動力性噪聲(sheng) 。

根據風機進(jin)出口結構(gou)不(bu)同，分為(wei)圓形結構(gou)和矩(ju)形結構(gou)。

（1）圓形(xing)結構分用(yong)于風(feng)(feng)機接管(guan)口為(wei)圓形(xing),又分為(wei)A、B型(xing)兩種， A型(xing)兩端均(jun)為(wei)法(fa)蘭(lan)盤，直接串接于管(guan)道(dao)(dao)中(即管(guan)道(dao)(dao)消聲器(qi))， B型(xing)一端為(wei)法(fa)蘭(lan)，另一端為(wei)直接大氣排空(可(ke)裝防雨(yu)風(feng)(feng)帽)，僅供(gong)設置(zhi)在(zai)室外(wai)管(guan)道(dao)(dao)末端和封閉式機房(fang)進風(feng)(feng)口選用(yong)。

（2）圓形結(jie)構中的(de)阻式(shi)消(xiao)聲(sheng)(sheng)片(pian)一般厚度為(wei)100 mm，150 mm，消(xiao)聲(sheng)(sheng)量15-30dB(A)，在風(feng)速(su)5-12m/s的(de)條件下，適用(yong)風(feng)量為(wei)1000-50000 m3/h。其(qi)結(jie)構中對高頻噪聲(sheng)(sheng)和低頻噪聲(sheng)(sheng)消(xiao)聲(sheng)(sheng)采用(yong)阻抗兩種消(xiao)聲(sheng)(sheng)區，用(yong)以(yi)最大限(xian)度的(de)增寬消(xiao)聲(sheng)(sheng)頻帶 

結構原理

根據對(dui)(dui)(dui)(dui)工業用(yong)(yong)各(ge)類風(feng)(feng)機運行現(xian)場(chang)噪(zao)聲(sheng)(sheng)(sheng)(sheng)源進行實際測(ce)試所取得(de)的頻(pin)(pin)譜(pu)特(te)性(xing)資料(liao)來(lai)確定在(zai)哪(na)些頻(pin)(pin)譜(pu)范圍內需要多大消(xiao)聲(sheng)(sheng)(sheng)(sheng)量作為設計吸(xi)聲(sheng)(sheng)(sheng)(sheng)體(ti)(ti)及流體(ti)(ti)通(tong)道(dao)的主要依(yi)據，同時采用(yong)(yong)了(le)(le)(le)具有較大吸(xi)聲(sheng)(sheng)(sheng)(sheng)材料(liao)飾面的狹矩形通(tong)道(dao)，以(yi)增強吸(xi)收(shou)效果。另，風(feng)(feng)機的噪(zao)聲(sheng)(sheng)(sheng)(sheng)源在(zai)最(zui)大噪(zao)聲(sheng)(sheng)(sheng)(sheng)級(ji)時，其頻(pin)(pin)譜(pu)值往(wang)往(wang)不(bu)止一種(zhong)，而(er)對(dui)(dui)(dui)(dui)不(bu)同頻(pin)(pin)譜(pu)帶，對(dui)(dui)(dui)(dui)其消(xiao)聲(sheng)(sheng)(sheng)(sheng)量要求(qiu)也不(bu)相同。為此系列通(tong)風(feng)(feng)管(guan)道(dao)消(xiao)音(yin)器及鼓引風(feng)(feng)機消(xiao)音(yin)器均為阻抗(kang)(kang)聲(sheng)(sheng)(sheng)(sheng)流型，采用(yong)(yong)了(le)(le)(le)對(dui)(dui)(dui)(dui)高(gao)、中(zhong)頻(pin)(pin)噪(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)吸(xi)音(yin)消(xiao)聲(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)的阻式(shi)結構及對(dui)(dui)(dui)(dui)中(zhong)、低頻(pin)(pin)噪(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)降(jiang)音(yin)作用(yong)(yong)的抗(kang)(kang)式(shi)結構，同時在(zai)阻式(shi)通(tong)道(dao)中(zhong)采用(yong)(yong)了(le)(le)(le)高(gao)頻(pin)(pin)及低頻(pin)(pin)兩(liang)種(zhong)吸(xi)音(yin)消(xiao)聲(sheng)(sheng)(sheng)(sheng)區，用(yong)(yong)以(yi)最(zui)大限度的增寬消(xiao)聲(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)帶，以(yi)實現(xian)良好的消(xiao)聲(sheng)(sheng)(sheng)(sheng)降(jiang)噪(zao)效果。

通(tong)風(feng)管道(dao)消(xiao)音(yin)(yin)器及鼓引風(feng)機消(xiao)音(yin)(yin)器適用于各(ge)類離心(xin)式、軸流(liu)式、羅茨風(feng)機及空壓機 

訂貨須知：

1、消(xiao)聲器對象及(ji)消(xiao)聲器安裝(zhuang)位置

2、接口(kou)尺寸、便于現場安裝連接線(xian)

3、風機風量：m3/H、m3/min

4、風機風壓：pa