【柴油(you)機(ji)消聲器】柴油(you)機(ji)消聲器有作(zuo)用(yong)嗎 柴油(you)機(ji)消聲器原理

柴油機消聲器原理

是利用多孔吸聲材料來降低噪聲。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(pai)列，就構成了(le)阻(zu)(zu)(zu)(zu)(zu)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)音器(qi)。當聲波(bo)(bo)進入阻(zu)(zu)(zu)(zu)(zu)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲器(qi)時(shi)，一部分聲能在多孔(kong)材(cai)料的孔(kong)隙中摩擦(ca)而轉(zhuan)化成熱能耗散掉，使通(tong)過消(xiao)(xiao)(xiao)(xiao)聲器(qi)的聲波(bo)(bo)減弱。阻(zu)(zu)(zu)(zu)(zu)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)音器(qi)器(qi)就好(hao)像電學(xue)上的純電阻(zu)(zu)(zu)(zu)(zu)電路，吸聲材(cai)料類似(si)于電阻(zu)(zu)(zu)(zu)(zu)。因此，人們就把這種消(xiao)(xiao)(xiao)(xiao)聲器(qi)稱為阻(zu)(zu)(zu)(zu)(zu)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲器(qi)。阻(zu)(zu)(zu)(zu)(zu)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲器(qi)對中高頻消(xiao)(xiao)(xiao)(xiao)聲效(xiao)果(guo)奸、對低頻消(xiao)(xiao)(xiao)(xiao)聲效(xiao)果(guo)較差(cha)。

柴油機消聲器有作用嗎

消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)按其工作(zuo)原理(li)可(ke)分為(wei)阻(zu)(zu)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)、抗(kang)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)和(he)阻(zu)(zu)抗(kang)復合消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)。阻(zu)(zu)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)主(zhu)要(yao)是(shi)(shi)用吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)來消(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)，把吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)固(gu)定在(zai)(zai)(zai)(zai)(zai)氣(qi)流流通(tong)的(de)管(guan)(guan)道內(nei)壁或按一定方式(shi)排列(lie)在(zai)(zai)(zai)(zai)(zai)管(guan)(guan)道中，當(dang)聲(sheng)(sheng)(sheng)(sheng)(sheng)波進入(ru)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)時(shi)，大部分聲(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)被吸(xi)(xi)收，起到消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)用，阻(zu)(zu)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)的(de)優(you)點(dian)(dian)(dian)是(shi)(shi)能(neng)在(zai)(zai)(zai)(zai)(zai)較寬的(de)中高頻(pin)(pin)范圍(wei)內(nei)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)，特別(bie)對高頻(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)波有(you)突出的(de)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)用。缺點(dian)(dian)(dian)是(shi)(shi)在(zai)(zai)(zai)(zai)(zai)高溫水蒸氣(qi)以及(ji)對吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)有(you)侵(qin)蝕作(zuo)用的(de)氣(qi)體中使用壽命較短(duan)。通(tong)常用于(yu)(yu)家庭(ting)、辦公室(shi)空調機；大型風(feng)洞，噴氣(qi)發(fa)動(dong)機試車間等(deng)處。抗(kang)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)又(you)稱聲(sheng)(sheng)(sheng)(sheng)(sheng)學(xue)濾(lv)波器(qi)(qi)，它(ta)(ta)又(you)分為(wei)共(gong)振(zhen)式(shi)、擴(kuo)張室(shi)式(shi)和(he)干涉(she)式(shi)等(deng)幾(ji)種。最(zui)簡單的(de)擴(kuo)張室(shi)式(shi)是(shi)(shi)在(zai)(zai)(zai)(zai)(zai)氣(qi)流通(tong)道管(guan)(guan)上接一段截面較大的(de)粗管(guan)(guan)，但其終端是(shi)(shi)細管(guan)(guan)，調節擴(kuo)張室(shi)（大管(guan)(guan)）的(de)截面扣(kou)長度以改變(bian)聲(sheng)(sheng)(sheng)(sheng)(sheng)波的(de)反射和(he)干涉(she)性(xing)(xing)(xing)(xing)能(neng)，從而改變(bian)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)量和(he)最(zui)大消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)率(lv)。它(ta)(ta)與阻(zu)(zu)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)不(bu)同(tong)之(zhi)處在(zai)(zai)(zai)(zai)(zai)于(yu)(yu)其中沒有(you)放置(zhi)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)，抗(kang)性(xing)(xing)(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)的(de)優(you)點(dian)(dian)(dian)是(shi)(shi)結構簡單，耐高溫耐氣(qi)體侵(qin)蝕，有(you)良好(hao)的(de)低(di)頻(pin)(pin)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)(xing)(xing)能(neng)．缺點(dian)(dian)(dian)是(shi)(shi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)帶窄，主(zhu)要(yao)用于(yu)(yu)汽(qi)車發(fa)動(dong)機及(ji)其它(ta)(ta)活塞(sai)發(fa)動(dong)機的(de)進氣(qi)和(he)排氣(qi)口。阻(zu)(zu)抗(kang)復合消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)綜(zong)合前兩種優(you)點(dian)(dian)(dian)制成(cheng)。在(zai)(zai)(zai)(zai)(zai)其內(nei)部既有(you)阻(zu)(zu)性(xing)(xing)(xing)(xing)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)，又(you)有(you)共(gong)振(zhen)腔，擴(kuo)張室(shi)等(deng)抗(kang)性(xing)(xing)(xing)(xing)濾(lv)波元(yuan)件，因此(ci)在(zai)(zai)(zai)(zai)(zai)較寬頻(pin)(pin)率(lv)范圍(wei)內(nei)有(you)良好(hao)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)效果。