【柴油(you)機消(xiao)聲器】柴油(you)機消(xiao)聲器有作用嗎 柴油(you)機消(xiao)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(zhong)排列，就(jiu)構成了阻性消(xiao)(xiao)音器(qi)(qi)(qi)。當聲(sheng)(sheng)(sheng)(sheng)波(bo)進(jin)入阻性消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)時，一部(bu)分聲(sheng)(sheng)(sheng)(sheng)能在多孔材料(liao)的(de)孔隙中(zhong)摩擦(ca)而(er)轉化成熱(re)能耗散掉，使通過(guo)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的(de)聲(sheng)(sheng)(sheng)(sheng)波(bo)減(jian)弱。阻性消(xiao)(xiao)音器(qi)(qi)(qi)器(qi)(qi)(qi)就(jiu)好像電(dian)學上的(de)純(chun)電(dian)阻電(dian)路，吸聲(sheng)(sheng)(sheng)(sheng)材料(liao)類似于電(dian)阻。因(yin)此，人們就(jiu)把這(zhe)種消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)稱為阻性消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)。阻性消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)對中(zhong)高頻消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)效果奸、對低頻消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)效果較差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)按其(qi)工作原理(li)可分(fen)(fen)為(wei)阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)、抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)和阻(zu)(zu)抗(kang)復合(he)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)。阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)主要是用吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料來消(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料固(gu)定在(zai)(zai)氣(qi)(qi)(qi)流(liu)流(liu)通的(de)管(guan)道內壁(bi)或按一(yi)定方式(shi)(shi)(shi)排(pai)(pai)列在(zai)(zai)管(guan)道中(zhong)，當(dang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)進入消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)時，大部分(fen)(fen)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)(neng)被吸收(shou)，起(qi)到消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用，阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)的(de)優點(dian)(dian)是能(neng)(neng)在(zai)(zai)較(jiao)寬的(de)中(zhong)高(gao)頻(pin)(pin)范圍內消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特別對(dui)高(gao)頻(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)有(you)突(tu)出的(de)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用。缺點(dian)(dian)是在(zai)(zai)高(gao)溫水(shui)蒸(zheng)氣(qi)(qi)(qi)以(yi)及對(dui)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料有(you)侵蝕作用的(de)氣(qi)(qi)(qi)體中(zhong)使用壽命較(jiao)短。通常用于家庭、辦(ban)公室(shi)(shi)空調機(ji)；大型風洞，噴氣(qi)(qi)(qi)發動(dong)機(ji)試車間(jian)等(deng)處。抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)又稱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學濾(lv)(lv)波(bo)器(qi)(qi)(qi)(qi)，它(ta)又分(fen)(fen)為(wei)共振式(shi)(shi)(shi)、擴(kuo)張(zhang)室(shi)(shi)式(shi)(shi)(shi)和干涉式(shi)(shi)(shi)等(deng)幾種。最簡單的(de)擴(kuo)張(zhang)室(shi)(shi)式(shi)(shi)(shi)是在(zai)(zai)氣(qi)(qi)(qi)流(liu)通道管(guan)上接一(yi)段(duan)截面較(jiao)大的(de)粗(cu)管(guan)，但(dan)其(qi)終端是細管(guan)，調節擴(kuo)張(zhang)室(shi)(shi)（大管(guan)）的(de)截面扣長(chang)度以(yi)改變(bian)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)反射和干涉性(xing)(xing)能(neng)(neng)，從而改變(bian)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量和最大消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)率。它(ta)與(yu)阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)不(bu)同之處在(zai)(zai)于其(qi)中(zhong)沒有(you)放置吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料，抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)的(de)優點(dian)(dian)是結構簡單，耐(nai)高(gao)溫耐(nai)氣(qi)(qi)(qi)體侵蝕，有(you)良(liang)好的(de)低頻(pin)(pin)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)能(neng)(neng)．缺點(dian)(dian)是消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)帶窄，主要用于汽車發動(dong)機(ji)及其(qi)它(ta)活塞發動(dong)機(ji)的(de)進氣(qi)(qi)(qi)和排(pai)(pai)氣(qi)(qi)(qi)口。阻(zu)(zu)抗(kang)復合(he)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)綜合(he)前兩(liang)種優點(dian)(dian)制成(cheng)。在(zai)(zai)其(qi)內部既(ji)有(you)阻(zu)(zu)性(xing)(xing)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料，又有(you)共振腔，擴(kuo)張(zhang)室(shi)(shi)等(deng)抗(kang)性(xing)(xing)濾(lv)(lv)波(bo)元件，因此(ci)在(zai)(zai)較(jiao)寬頻(pin)(pin)率范圍內有(you)良(liang)好消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效果(guo)。