風機消(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)采(cai)用(yong)(yong)了(le)對(dui)短、中(zhong)(zhong)波(bo)(bo)(bo)噪(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)用(yong)(yong)的(de)(de)(de)(de)阻式(shi)結(jie)(jie)構及對(dui)中(zhong)(zhong)、長波(bo)(bo)(bo)噪(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)用(yong)(yong)的(de)(de)(de)(de)抗(kang)式(shi)結(jie)(jie)構，根據對(dui)工業用(yong)(yong)各類風機運行現(xian)場噪(zao)聲(sheng)(sheng)(sheng)(sheng)源(yuan)進行實際測試所取得的(de)(de)(de)(de)波(bo)(bo)(bo)譜(pu)特性資(zi)料(liao)來確定在哪些波(bo)(bo)(bo)譜(pu)范圍內需(xu)要多(duo)大消(xiao)聲(sheng)(sheng)(sheng)(sheng)量作(zuo)(zuo)為(wei)設(she)計(ji)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)體(ti)及流體(ti)通(tong)道(dao)(dao)的(de)(de)(de)(de)主要依據，同(tong)時采(cai)用(yong)(yong)了(le)具有較大吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)材料(liao)飾面的(de)(de)(de)(de)狹(xia)矩(ju)形(xing)通(tong)道(dao)(dao)，以(yi)增強吸(xi)(xi)收效(xiao)果。另，風機的(de)(de)(de)(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)源(yuan)在最大噪(zao)聲(sheng)(sheng)(sheng)(sheng)級時，其波(bo)(bo)(bo)譜(pu)值往(wang)往(wang)不(bu)止一種，而(er)對(dui)不(bu)同(tong)波(bo)(bo)(bo)譜(pu)帶(dai)，對(dui)其消(xiao)聲(sheng)(sheng)(sheng)(sheng)量要求(qiu)也不(bu)相同(tong)。為(wei)此(ci)系(xi)列通(tong)風管道(dao)(dao)消(xiao)音器(qi)及鼓引(yin)風機消(xiao)音器(qi)均為(wei)阻抗(kang)聲(sheng)(sheng)(sheng)(sheng)流型(xing)，采(cai)用(yong)(yong)了(le)對(dui)短、中(zhong)(zhong)波(bo)(bo)(bo)噪(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)(qi)吸(xi)(xi)音消(xiao)聲(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)用(yong)(yong)的(de)(de)(de)(de)阻式(shi)結(jie)(jie)構及對(dui)中(zhong)(zhong)、長波(bo)(bo)(bo)噪(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)(qi)(qi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)降(jiang)音作(zuo)(zuo)用(yong)(yong)的(de)(de)(de)(de)抗(kang)式(shi)結(jie)(jie)構，同(tong)時在阻式(shi)通(tong)道(dao)(dao)中(zhong)(zhong)采(cai)用(yong)(yong)了(le)短波(bo)(bo)(bo)及長波(bo)(bo)(bo)兩(liang)種吸(xi)(xi)音消(xiao)聲(sheng)(sheng)(sheng)(sheng)區，用(yong)(yong)以(yi)最大限度的(de)(de)(de)(de)增寬消(xiao)聲(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)帶(dai)，以(yi)實現(xian)良好的(de)(de)(de)(de)消(xiao)聲(sheng)(sheng)(sheng)(sheng)降(jiang)噪(zao)效(xiao)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。
