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　　風(feng)(feng)機消(xiao)聲(sheng)(sheng)器(qi)(qi)、排(pai)氣管道消(xiao)聲(sheng)(sheng)器(qi)(qi)以及鼓(gu)引(yin)風(feng)(feng)機消(xiao)聲(sheng)(sheng)器(qi)(qi)的(de)形式均采用對中、高頻寬(kuan)帶(dai)特性(xing)(xing)有較好效果的(de)阻性(xing)(xing)吸(xi)音(yin)降(jiang)(jiang)噪原(yuan)理，對低、中頻和脈動(dong)特性(xing)(xing)時有良好效果的(de)抗性(xing)(xing)消(xiao)聲(sheng)(sheng)降(jiang)(jiang)音(yin)原(yuan)理以及微穿孔(kong)消(xiao)聲(sheng)(sheng)器(qi)(qi)和阻抗復合式消(xiao)聲(sheng)(sheng)器(qi)(qi)。

　　阻性消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)是一種吸收型消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)，根據氣流通道結(jie)構的不(bu)同，一般分為(wei)直管式(shi)(shi)、片式(shi)(shi)、折板式(shi)(shi)、蜂窩(wo)式(shi)(shi)、聲(sheng)(sheng)(sheng)(sheng)流式(shi)(shi)、迷宮式(shi)(shi)和彎頭式(shi)(shi)等。阻性消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)是利用聲(sheng)(sheng)(sheng)(sheng)波在多孔(kong)性吸聲(sheng)(sheng)(sheng)(sheng)材料傳(chuan)播時，受摩擦和粘(zhan)滯阻力(li)，將聲(sheng)(sheng)(sheng)(sheng)能轉化(hua)為(wei)熱(re)能耗(hao)散(san)掉，從而達到消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)降音的目的。它是所有消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)中(zhong)應用廣泛的一類消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)。

　　抗(kang)性消聲(sheng)器(qi)(qi)它與阻性消聲(sheng)器(qi)(qi)消聲(sheng)降(jiang)噪原理不(bu)同，它不(bu)能直接(jie)吸(xi)收聲(sheng)能，而(er)是利用管道上突(tu)變(bian)的界面(mian)(mian)或旁接(jie)共振腔，使沿管道傳播的某(mou)些(xie)頻率聲(sheng)波，在(zai)突(tu)變(bian)的界面(mian)(mian)處(chu)發生反射、干涉等現象，從而(er)達到(dao)消聲(sheng)降(jiang)音的目的。分為擴(kuo)張室式消聲(sheng)器(qi)(qi)及(ji)共振式消聲(sheng)器(qi)(qi)。

　　因在(zai)實際噪聲(sheng)控(kong)制工(gong)程中，噪聲(sheng)以寬頻帶居(ju)多(duo)，通常將阻(zu)性吸音降噪聲(sheng)及抗性消聲(sheng)降音結(jie)構(gou)組合起來，以控(kong)制高(gao)強度的寬頻帶噪聲(sheng)。

　　1、阻抗聲流(liu)型通風、排氣管道及風機消聲器結構原理:

　　根據對(dui)工(gong)業(ye)用(yong)(yong)(yong)各類風(feng)機(ji)運行(xing)現(xian)場噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)進行(xing)實際測試所取(qu)得的(de)頻譜(pu)(pu)特性資(zi)料來確定(ding)在(zai)哪(na)些頻譜(pu)(pu)范圍內需要(yao)多大(da)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)作(zuo)為設計吸聲(sheng)(sheng)(sheng)(sheng)(sheng)體及流(liu)體通(tong)道(dao)的(de)主要(yao)依據，同(tong)時(shi)采(cai)用(yong)(yong)(yong)了具有較大(da)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)材料飾(shi)面的(de)狹矩形通(tong)道(dao)，以增強吸收效果(guo)(guo)。另，風(feng)機(ji)的(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)在(zai)大(da)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)級時(shi)，其頻譜(pu)(pu)值(zhi)往往不止一(yi)種，而對(dui)不同(tong)頻譜(pu)(pu)帶(dai)，對(dui)其消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)要(yao)求也不相同(tong)。為此(ci)GF系列(lie)通(tong)風(feng)管(guan)道(dao)消(xiao)(xiao)音(yin)器(qi)(qi)(qi)及鼓引(yin)風(feng)機(ji)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)均為阻抗聲(sheng)(sheng)(sheng)(sheng)(sheng)流(liu)型，采(cai)用(yong)(yong)(yong)了對(dui)高、中頻噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)起吸音(yin)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)用(yong)(yong)(yong)的(de)阻式(shi)結構及對(dui)中、低(di)頻噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)起消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)降音(yin)作(zuo)用(yong)(yong)(yong)的(de)抗式(shi)結構，同(tong)時(shi)在(zai)阻式(shi)通(tong)道(dao)中采(cai)用(yong)(yong)(yong)了高頻及低(di)頻兩(liang)種吸音(yin)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)區，用(yong)(yong)(yong)以大(da)限度的(de)增寬消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻帶(dai)，以實現(xian)良好的(de)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)降噪(zao)效果(guo)(guo)。GF系列(lie)通(tong)風(feng)管(guan)道(dao)風(feng)機(ji)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)及鼓引(yin)風(feng)機(ji)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)適用(yong)(yong)(yong)于各類離心(xin)式(shi)、軸流(liu)式(shi)、羅茨風(feng)機(ji)及空壓(ya)機(ji)。

　　2、阻抗聲流型風機消聲器（風機消聲器）用途及產品特點:

　　風(feng)機(ji)(ji)(ji)是一種通用機(ji)(ji)(ji)械(xie)設備，其使用范圍很廣，電力、礦山、機(ji)(ji)(ji)械(xie)、冶金、化工(gong)(gong)等各行業的(de)生(sheng)產均離不(bu)開風(feng)機(ji)(ji)(ji)。風(feng)機(ji)(ji)(ji)在(zai)運轉中產生(sheng)的(de)噪(zao)聲(sheng)常常成為影響工(gong)(gong)人健康和(he)干擾環境(jing)的(de)禍源。特(te)別是鄰近生(sheng)活區(qu)的(de)風(feng)機(ji)(ji)(ji)，其進風(feng)口(kou)和(he)出(chu)風(feng)口(kou)所輻射的(de)空(kong)氣動力性噪(zao)聲(sheng)，更是污染環境(jing)的(de)主要因素，形(xing)成公害(hai)，是近年(nian)來我國工(gong)(gong)業部門(men)治理噪(zao)聲(sheng)污染的(de)主要對象之一。

　　屬連(lian)續(xu)(xu)運轉之(zhi)設備(bei)(bei)。國際標(biao)(biao)(biao)準化組織(ISO）對(dui)此(ci)類設備(bei)(bei)所規定的(de)(de)(de)噪(zao)(zao)聲(sheng)標(biao)(biao)(biao)準為≤90分貝，我國的(de)(de)(de)新標(biao)(biao)(biao)準與此(ci)相同，這也是工業(ye)企業(ye)連(lian)續(xu)(xu)性噪(zao)(zao)聲(sheng)達標(biao)(biao)(biao)的(de)(de)(de)依據，但在不采用消聲(sheng)措施的(de)(de)(de)情(qing)況下，風機進出(chu)風口向環境所射出(chu)的(de)(de)(de)噪(zao)(zao)聲(sheng)可達110～120分貝，大大超過了達標(biao)(biao)(biao)要求。

　　風(feng)機消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器產品為(wei)(wei)阻(zu)抗聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)流型。本廠根據(ju)對(dui)(dui)發電廠各類風(feng)機運(yun)行現場(chang)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)進行實(shi)際測試所取得(de)的瀕特(te)性資料(liao)來確定(ding)在(zai)哪(na)些頻(pin)譜范圍內需要多大消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)作(zuo)(zuo)為(wei)(wei)設計吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)片結(jie)構及流體通(tong)道的主要依據(ju)，同時采用(yong)了(le)具有較大吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)飾面(mian)的狹(xia)矩形通(tong)道，以(yi)增強吸(xi)收效果。我們知道，風(feng)機的噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)在(zai)大噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級時，其頻(pin)譜值往(wang)往(wang)不止一(yi)種，而對(dui)(dui)不同頻(pin)譜帶，對(dui)(dui)其消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)要求(qiu)也(ye)不相(xiang)同。為(wei)(wei)此本產品采用(yong)了(le)對(dui)(dui)高、中頻(pin)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)起消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)用(yong)的阻(zu)式結(jie)構及對(dui)(dui)中、低頻(pin)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)起消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)用(yong)的抗式結(jie)構，同時在(zai)阻(zu)式通(tong)道中采用(yong)了(le)高頻(pin)及低頻(pin)兩種消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)區，用(yong)以(yi)大限度的增寬消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)帶，以(yi)實(shi)現良好(hao)的消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效果。

　　產品當用戶按要求(qiu)安裝后，其極(ji)限噪聲級將不(bu)超過85～90分貝。

　　介紹的阻抗(kang)聲流型消(xiao)(xiao)聲器（消(xiao)(xiao)音(yin)器）適用(yong)于各類離(li)心式(shi)、軸流式(shi)通風機，此外，我公司(si)還(huan)設計(ji)生產燃(ran)氣輪機，羅茨(ci)風機、空壓機及(ji)柴(chai)油機排氣等各類用(yong)途(tu)的消(xiao)(xiao)聲器，歡迎(ying)用(yong)戶垂詢、選購(gou)。