風機(ji)消(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)采(cai)用(yong)(yong)(yong)了對(dui)(dui)(dui)短、中(zhong)(zhong)波(bo)(bo)(bo)噪聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)作(zuo)用(yong)(yong)(yong)的(de)(de)阻(zu)(zu)式結(jie)構及(ji)(ji)對(dui)(dui)(dui)中(zhong)(zhong)、長波(bo)(bo)(bo)噪聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)作(zuo)用(yong)(yong)(yong)的(de)(de)抗式結(jie)構，根據對(dui)(dui)(dui)工業用(yong)(yong)(yong)各類風機(ji)運行現場噪聲(sheng)(sheng)(sheng)(sheng)源進行實(shi)際測試所取得的(de)(de)波(bo)(bo)(bo)譜(pu)(pu)特(te)性資料來確定在哪些波(bo)(bo)(bo)譜(pu)(pu)范圍內需(xu)要(yao)多大消(xiao)聲(sheng)(sheng)(sheng)(sheng)量(liang)作(zuo)為(wei)設計吸(xi)聲(sheng)(sheng)(sheng)(sheng)體(ti)及(ji)(ji)流體(ti)通(tong)道的(de)(de)主要(yao)依據，同時采(cai)用(yong)(yong)(yong)了具有(you)較大吸(xi)聲(sheng)(sheng)(sheng)(sheng)材料飾面的(de)(de)狹矩形通(tong)道，以(yi)(yi)增強吸(xi)收效果。另(ling)，風機(ji)的(de)(de)噪聲(sheng)(sheng)(sheng)(sheng)源在最(zui)大噪聲(sheng)(sheng)(sheng)(sheng)級時，其(qi)波(bo)(bo)(bo)譜(pu)(pu)值(zhi)往往不止一種，而對(dui)(dui)(dui)不同波(bo)(bo)(bo)譜(pu)(pu)帶，對(dui)(dui)(dui)其(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)量(liang)要(yao)求也不相同。為(wei)此系(xi)列通(tong)風管道消(xiao)音器(qi)(qi)(qi)及(ji)(ji)鼓引風機(ji)消(xiao)音器(qi)(qi)(qi)均為(wei)阻(zu)(zu)抗聲(sheng)(sheng)(sheng)(sheng)流型，采(cai)用(yong)(yong)(yong)了對(dui)(dui)(dui)短、中(zhong)(zhong)波(bo)(bo)(bo)噪聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)吸(xi)音消(xiao)聲(sheng)(sheng)(sheng)(sheng)作(zuo)用(yong)(yong)(yong)的(de)(de)阻(zu)(zu)式結(jie)構及(ji)(ji)對(dui)(dui)(dui)中(zhong)(zhong)、長波(bo)(bo)(bo)噪聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)降音作(zuo)用(yong)(yong)(yong)的(de)(de)抗式結(jie)構，同時在阻(zu)(zu)式通(tong)道中(zhong)(zhong)采(cai)用(yong)(yong)(yong)了短波(bo)(bo)(bo)及(ji)(ji)長波(bo)(bo)(bo)兩種吸(xi)音消(xiao)聲(sheng)(sheng)(sheng)(sheng)區，用(yong)(yong)(yong)以(yi)(yi)最(zui)大限(xian)度的(de)(de)增寬(kuan)消(xiao)聲(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)帶，以(yi)(yi)實(shi)現良好的(de)(de)消(xiao)聲(sheng)(sheng)(sheng)(sheng)降噪效果。
通風管道消音器及鼓引風機消音器適用于各類離心式、軸流式、羅茨風機及空壓機。
片式消聲器是阻止聲音傳播而允許氣流通過的一種器件，是消除空氣動力性噪聲的重要措施。片式消聲器主要是利用多孔吸聲材料來降低噪聲的。把吸聲材料固定在氣流通道的內壁上或按照一定方式在管道中排列，就構成了片式消聲器。當聲波進入片式消聲器時，一部分聲能在多孔材料的孔隙中摩擦而轉化成熱能耗散掉，使通過消聲器的聲波減弱。
片式消聲器對消除短、中波噪聲效果顯著，對長波噪聲的消除則不是很有效，其消聲量與消聲器的結構形式、空氣通道橫斷面的形狀與面積、氣流速度、消聲器長度，以及吸聲材料的種類、密度、厚度等因素有關，護面板材料及其型式對消聲效果也有很大影響； 護面材料可采用柔軟多孔透氣的織物，如玻璃纖維布，或穿孔板。護面用的穿孔板一般采用薄鋼板、不銹鋼板加工制成。為了發揮吸聲材料的吸聲性能，穿孔板的穿孔率應大于20%，孔徑3～10mm。
