【柴(chai)油(you)(you)機消聲(sheng)(sheng)器】柴(chai)油(you)(you)機消聲(sheng)(sheng)器有作用嗎 柴(chai)油(you)(you)機消聲(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(zhong)排列(lie)，就構成(cheng)了阻(zu)(zu)性消音器(qi)(qi)(qi)。當(dang)聲(sheng)(sheng)(sheng)波(bo)進入阻(zu)(zu)性消聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)時(shi)，一部分聲(sheng)(sheng)(sheng)能在(zai)多孔材料的(de)孔隙中(zhong)摩擦而轉(zhuan)化成(cheng)熱能耗散(san)掉，使通過消聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)的(de)聲(sheng)(sheng)(sheng)波(bo)減弱。阻(zu)(zu)性消音器(qi)(qi)(qi)器(qi)(qi)(qi)就好(hao)像電學上的(de)純(chun)電阻(zu)(zu)電路(lu)，吸聲(sheng)(sheng)(sheng)材料類(lei)似于電阻(zu)(zu)。因此(ci)，人們就把這種消聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)稱為阻(zu)(zu)性消聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)。阻(zu)(zu)性消聲(sheng)(sheng)(sheng)器(qi)(qi)(qi)對(dui)中(zhong)高(gao)頻消聲(sheng)(sheng)(sheng)效果奸、對(dui)低頻消聲(sheng)(sheng)(sheng)效果較差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器按其(qi)工(gong)作原理(li)可分為阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器、抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器和(he)(he)阻(zu)抗(kang)復(fu)合消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器。阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器主(zhu)要(yao)是(shi)(shi)用(yong)吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料來(lai)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)，把吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料固(gu)定在(zai)(zai)氣流(liu)流(liu)通(tong)的(de)管(guan)道內壁或(huo)按一定方(fang)式排列在(zai)(zai)管(guan)道中(zhong)(zhong)，當聲(sheng)(sheng)(sheng)(sheng)波(bo)(bo)進(jin)入(ru)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器時，大(da)(da)部分聲(sheng)(sheng)(sheng)(sheng)能(neng)被吸(xi)收，起到消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)作用(yong)，阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器的(de)優點(dian)是(shi)(shi)能(neng)在(zai)(zai)較寬的(de)中(zhong)(zhong)高頻(pin)范圍內消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)，特別對高頻(pin)聲(sheng)(sheng)(sheng)(sheng)波(bo)(bo)有突出的(de)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)作用(yong)。缺點(dian)是(shi)(shi)在(zai)(zai)高溫水蒸氣以(yi)及(ji)對吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料有侵(qin)蝕作用(yong)的(de)氣體中(zhong)(zhong)使用(yong)壽命較短。通(tong)常用(yong)于(yu)家(jia)庭、辦公室空調機(ji)(ji)；大(da)(da)型風洞，噴氣發(fa)動機(ji)(ji)試車間等處(chu)。抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器又稱聲(sheng)(sheng)(sheng)(sheng)學濾波(bo)(bo)器，它又分為共振(zhen)(zhen)式、擴(kuo)張室式和(he)(he)干涉式等幾種。最(zui)簡單的(de)擴(kuo)張室式是(shi)(shi)在(zai)(zai)氣流(liu)通(tong)道管(guan)上接(jie)一段(duan)截(jie)(jie)面較大(da)(da)的(de)粗(cu)管(guan)，但(dan)其(qi)終(zhong)端是(shi)(shi)細管(guan)，調節擴(kuo)張室（大(da)(da)管(guan)）的(de)截(jie)(jie)面扣長度以(yi)改變(bian)聲(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)反射和(he)(he)干涉性(xing)(xing)能(neng)，從而改變(bian)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)量和(he)(he)最(zui)大(da)(da)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)頻(pin)率(lv)。它與阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器不(bu)同之處(chu)在(zai)(zai)于(yu)其(qi)中(zhong)(zhong)沒有放置吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料，抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器的(de)優點(dian)是(shi)(shi)結構簡單，耐(nai)高溫耐(nai)氣體侵(qin)蝕，有良好的(de)低頻(pin)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)性(xing)(xing)能(neng)．缺點(dian)是(shi)(shi)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)頻(pin)帶窄(zhai)，主(zhu)要(yao)用(yong)于(yu)汽車發(fa)動機(ji)(ji)及(ji)其(qi)它活塞發(fa)動機(ji)(ji)的(de)進(jin)氣和(he)(he)排氣口。阻(zu)抗(kang)復(fu)合消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器綜合前(qian)兩種優點(dian)制成。在(zai)(zai)其(qi)內部既(ji)有阻(zu)性(xing)(xing)吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料，又有共振(zhen)(zhen)腔(qiang)，擴(kuo)張室等抗(kang)性(xing)(xing)濾波(bo)(bo)元件，因此(ci)在(zai)(zai)較寬頻(pin)率(lv)范圍內有良好消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)效果。