【柴油(you)機(ji)消(xiao)聲(sheng)器】柴油(you)機(ji)消(xiao)聲(sheng)器有作用(yong)嗎 柴油(you)機(ji)消(xiao)聲(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，就構成了阻性(xing)消(xiao)(xiao)(xiao)音(yin)器(qi)。當聲(sheng)波進入阻性(xing)消(xiao)(xiao)(xiao)聲(sheng)器(qi)時(shi)，一(yi)部分聲(sheng)能在多孔(kong)材(cai)料的(de)孔(kong)隙中摩擦而轉化成熱(re)能耗散掉，使通過消(xiao)(xiao)(xiao)聲(sheng)器(qi)的(de)聲(sheng)波減弱。阻性(xing)消(xiao)(xiao)(xiao)音(yin)器(qi)器(qi)就好像電(dian)(dian)學上的(de)純電(dian)(dian)阻電(dian)(dian)路，吸聲(sheng)材(cai)料類(lei)似于(yu)電(dian)(dian)阻。因此(ci)，人們就把(ba)這種消(xiao)(xiao)(xiao)聲(sheng)器(qi)稱為(wei)阻性(xing)消(xiao)(xiao)(xiao)聲(sheng)器(qi)。阻性(xing)消(xiao)(xiao)(xiao)聲(sheng)器(qi)對中高頻消(xiao)(xiao)(xiao)聲(sheng)效(xiao)果(guo)(guo)奸、對低頻消(xiao)(xiao)(xiao)聲(sheng)效(xiao)果(guo)(guo)較差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)按其(qi)工作原理可分(fen)為(wei)(wei)阻(zu)(zu)(zu)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)、抗(kang)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)和阻(zu)(zu)(zu)抗(kang)復合(he)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)。阻(zu)(zu)(zu)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)主要是(shi)(shi)用(yong)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)來(lai)消(xiao)(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)固定在氣(qi)流流通的(de)(de)(de)(de)管(guan)(guan)道內壁或按一定方式排列在管(guan)(guan)道中(zhong)，當聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)進入消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)時，大(da)部(bu)分(fen)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)被吸(xi)收，起(qi)到消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)，阻(zu)(zu)(zu)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)優(you)點(dian)是(shi)(shi)能(neng)在較(jiao)(jiao)寬的(de)(de)(de)(de)中(zhong)高頻(pin)范圍(wei)內消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特別對高頻(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)有(you)突出(chu)的(de)(de)(de)(de)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)。缺點(dian)是(shi)(shi)在高溫水蒸氣(qi)以(yi)及(ji)對吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)有(you)侵(qin)(qin)蝕作用(yong)的(de)(de)(de)(de)氣(qi)體中(zhong)使用(yong)壽命較(jiao)(jiao)短。通常(chang)用(yong)于(yu)家庭、辦公室(shi)空(kong)調機(ji)(ji)；大(da)型風(feng)洞，噴氣(qi)發動(dong)機(ji)(ji)試(shi)車間(jian)等處(chu)(chu)。抗(kang)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)又(you)稱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學濾波(bo)器(qi)(qi)(qi)(qi)(qi)(qi)，它又(you)分(fen)為(wei)(wei)共振(zhen)式、擴張(zhang)(zhang)室(shi)式和干(gan)涉式等幾種。最(zui)簡單(dan)的(de)(de)(de)(de)擴張(zhang)(zhang)室(shi)式是(shi)(shi)在氣(qi)流通道管(guan)(guan)上接一段(duan)截面(mian)較(jiao)(jiao)大(da)的(de)(de)(de)(de)粗(cu)管(guan)(guan)，但其(qi)終(zhong)端是(shi)(shi)細管(guan)(guan)，調節擴張(zhang)(zhang)室(shi)（大(da)管(guan)(guan)）的(de)(de)(de)(de)截面(mian)扣長度以(yi)改變聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)(de)(de)反射(she)和干(gan)涉性(xing)(xing)(xing)(xing)(xing)能(neng)，從而(er)改變消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)和最(zui)大(da)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)率(lv)。它與阻(zu)(zu)(zu)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)不(bu)同之(zhi)處(chu)(chu)在于(yu)其(qi)中(zhong)沒有(you)放(fang)置吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)，抗(kang)性(xing)(xing)(xing)(xing)(xing)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)優(you)點(dian)是(shi)(shi)結構簡單(dan)，耐高溫耐氣(qi)體侵(qin)(qin)蝕，有(you)良好的(de)(de)(de)(de)低頻(pin)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)(xing)(xing)(xing)能(neng)．缺點(dian)是(shi)(shi)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)帶窄，主要用(yong)于(yu)汽車發動(dong)機(ji)(ji)及(ji)其(qi)它活塞(sai)發動(dong)機(ji)(ji)的(de)(de)(de)(de)進氣(qi)和排氣(qi)口(kou)。阻(zu)(zu)(zu)抗(kang)復合(he)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)綜合(he)前兩種優(you)點(dian)制成。在其(qi)內部(bu)既有(you)阻(zu)(zu)(zu)性(xing)(xing)(xing)(xing)(xing)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)，又(you)有(you)共振(zhen)腔，擴張(zhang)(zhang)室(shi)等抗(kang)性(xing)(xing)(xing)(xing)(xing)濾波(bo)元件，因(yin)此(ci)在較(jiao)(jiao)寬頻(pin)率(lv)范圍(wei)內有(you)良好消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效果(guo)。