【柴油機(ji)(ji)消(xiao)聲(sheng)(sheng)器】柴油機(ji)(ji)消(xiao)聲(sheng)(sheng)器有作用嗎 柴油機(ji)(ji)消(xiao)聲(sheng)(sheng)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列，就構(gou)成(cheng)了(le)阻(zu)性(xing)(xing)消(xiao)(xiao)音器(qi)。當聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波進入阻(zu)性(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)時(shi)，一部分聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能在多孔材(cai)料的(de)孔隙(xi)中摩擦而轉化(hua)成(cheng)熱(re)能耗(hao)散(san)掉，使通(tong)過消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)的(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波減弱。阻(zu)性(xing)(xing)消(xiao)(xiao)音器(qi)器(qi)就好(hao)像電學上的(de)純電阻(zu)電路，吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料類似于電阻(zu)。因此，人們就把這種消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)稱為阻(zu)性(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)。阻(zu)性(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)對(dui)中高頻消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效(xiao)(xiao)果奸、對(dui)低頻消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效(xiao)(xiao)果較(jiao)差。

柴油機消聲器有作用嗎

消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)按其(qi)工作原(yuan)理可分(fen)為(wei)阻(zu)(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)、抗(kang)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)和(he)(he)阻(zu)(zu)(zu)抗(kang)復合消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)。阻(zu)(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)主要是(shi)(shi)用(yong)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料來(lai)消(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把(ba)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料固定在(zai)氣(qi)(qi)(qi)(qi)流(liu)(liu)流(liu)(liu)通的(de)(de)管道內壁或(huo)按一定方式排列在(zai)管道中(zhong)，當聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)進入消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)時，大(da)(da)部分(fen)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)被(bei)吸(xi)收，起到消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)，阻(zu)(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的(de)(de)優(you)點(dian)是(shi)(shi)能(neng)在(zai)較(jiao)寬的(de)(de)中(zhong)高(gao)(gao)頻(pin)(pin)(pin)范(fan)圍內消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特別對(dui)高(gao)(gao)頻(pin)(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)有(you)(you)(you)(you)突出(chu)的(de)(de)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)。缺點(dian)是(shi)(shi)在(zai)高(gao)(gao)溫水蒸氣(qi)(qi)(qi)(qi)以及對(dui)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料有(you)(you)(you)(you)侵蝕作用(yong)的(de)(de)氣(qi)(qi)(qi)(qi)體(ti)中(zhong)使用(yong)壽(shou)命(ming)較(jiao)短。通常用(yong)于家庭(ting)、辦(ban)公室空調機(ji)；大(da)(da)型風(feng)洞，噴氣(qi)(qi)(qi)(qi)發動(dong)機(ji)試車間等處(chu)。抗(kang)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)又(you)稱(cheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學濾波(bo)(bo)器(qi)(qi)(qi)，它又(you)分(fen)為(wei)共振式、擴張(zhang)室式和(he)(he)干涉(she)式等幾(ji)種(zhong)。最簡(jian)單(dan)的(de)(de)擴張(zhang)室式是(shi)(shi)在(zai)氣(qi)(qi)(qi)(qi)流(liu)(liu)通道管上接一段截(jie)面(mian)較(jiao)大(da)(da)的(de)(de)粗管，但其(qi)終端是(shi)(shi)細管，調節擴張(zhang)室（大(da)(da)管）的(de)(de)截(jie)面(mian)扣長(chang)度以改變聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)(de)反射和(he)(he)干涉(she)性(xing)能(neng)，從而改變消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)和(he)(he)最大(da)(da)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)(pin)率(lv)。它與阻(zu)(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)不同之(zhi)處(chu)在(zai)于其(qi)中(zhong)沒有(you)(you)(you)(you)放置吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料，抗(kang)性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的(de)(de)優(you)點(dian)是(shi)(shi)結(jie)構簡(jian)單(dan)，耐高(gao)(gao)溫耐氣(qi)(qi)(qi)(qi)體(ti)侵蝕，有(you)(you)(you)(you)良(liang)好(hao)的(de)(de)低頻(pin)(pin)(pin)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)能(neng)．缺點(dian)是(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)(pin)帶(dai)窄，主要用(yong)于汽車發動(dong)機(ji)及其(qi)它活塞發動(dong)機(ji)的(de)(de)進氣(qi)(qi)(qi)(qi)和(he)(he)排氣(qi)(qi)(qi)(qi)口。阻(zu)(zu)(zu)抗(kang)復合消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)綜合前兩種(zhong)優(you)點(dian)制成。在(zai)其(qi)內部既有(you)(you)(you)(you)阻(zu)(zu)(zu)性(xing)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料，又(you)有(you)(you)(you)(you)共振腔，擴張(zhang)室等抗(kang)性(xing)濾波(bo)(bo)元(yuan)件，因此(ci)在(zai)較(jiao)寬頻(pin)(pin)(pin)率(lv)范(fan)圍內有(you)(you)(you)(you)良(liang)好(hao)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效果。