【柴(chai)(chai)油機消聲器】柴(chai)(chai)油機消聲器有作(zuo)用嗎 柴(chai)(chai)油機消聲器原理(li)

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(cheng)了阻(zu)性(xing)(xing)消(xiao)(xiao)音(yin)器(qi)(qi)(qi)(qi)。當聲(sheng)波進入阻(zu)性(xing)(xing)消(xiao)(xiao)聲(sheng)器(qi)(qi)(qi)(qi)時，一部(bu)分聲(sheng)能在多孔材(cai)料的孔隙中摩擦而轉化成(cheng)熱能耗散掉，使(shi)通過消(xiao)(xiao)聲(sheng)器(qi)(qi)(qi)(qi)的聲(sheng)波減弱。阻(zu)性(xing)(xing)消(xiao)(xiao)音(yin)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)就好(hao)像電學(xue)上(shang)的純電阻(zu)電路，吸(xi)聲(sheng)材(cai)料類似(si)于(yu)電阻(zu)。因此，人們就把(ba)這種消(xiao)(xiao)聲(sheng)器(qi)(qi)(qi)(qi)稱為阻(zu)性(xing)(xing)消(xiao)(xiao)聲(sheng)器(qi)(qi)(qi)(qi)。阻(zu)性(xing)(xing)消(xiao)(xiao)聲(sheng)器(qi)(qi)(qi)(qi)對中高頻(pin)消(xiao)(xiao)聲(sheng)效果(guo)奸、對低頻(pin)消(xiao)(xiao)聲(sheng)效果(guo)較差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)按(an)其(qi)(qi)(qi)工作原理可分為阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)、抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)和阻(zu)抗(kang)復(fu)合(he)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)。阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)主要是(shi)用(yong)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料來消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料固(gu)定在(zai)氣(qi)流流通的(de)(de)(de)管(guan)(guan)道(dao)內(nei)(nei)壁或按(an)一(yi)(yi)定方式(shi)排列(lie)在(zai)管(guan)(guan)道(dao)中，當聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)進入消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)時，大(da)部分聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)被吸收，起到消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)，阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的(de)(de)(de)優(you)點是(shi)能(neng)在(zai)較寬(kuan)的(de)(de)(de)中高(gao)頻(pin)范(fan)圍內(nei)(nei)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特別對高(gao)頻(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)有(you)(you)突(tu)出(chu)的(de)(de)(de)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)。缺點是(shi)在(zai)高(gao)溫水蒸氣(qi)以及對吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料有(you)(you)侵(qin)蝕作用(yong)的(de)(de)(de)氣(qi)體中使用(yong)壽(shou)命較短(duan)。通常(chang)用(yong)于家庭、辦公(gong)室空調機(ji)；大(da)型風洞，噴氣(qi)發動(dong)機(ji)試車(che)間等(deng)處。抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)又稱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學濾波(bo)(bo)器(qi)(qi)(qi)，它又分為共振式(shi)、擴張室式(shi)和干涉(she)式(shi)等(deng)幾種。最(zui)(zui)簡單的(de)(de)(de)擴張室式(shi)是(shi)在(zai)氣(qi)流通道(dao)管(guan)(guan)上接(jie)一(yi)(yi)段截(jie)面較大(da)的(de)(de)(de)粗管(guan)(guan)，但其(qi)(qi)(qi)終端是(shi)細(xi)管(guan)(guan)，調節擴張室（大(da)管(guan)(guan)）的(de)(de)(de)截(jie)面扣(kou)長度以改(gai)變聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)(de)(de)反(fan)射和干涉(she)性(xing)(xing)能(neng)，從而改(gai)變消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量和最(zui)(zui)大(da)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)率。它與(yu)阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)不同之處在(zai)于其(qi)(qi)(qi)中沒有(you)(you)放置吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料，抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的(de)(de)(de)優(you)點是(shi)結構簡單，耐高(gao)溫耐氣(qi)體侵(qin)蝕，有(you)(you)良(liang)(liang)好(hao)的(de)(de)(de)低(di)頻(pin)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)能(neng)．缺點是(shi)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)帶窄，主要用(yong)于汽車(che)發動(dong)機(ji)及其(qi)(qi)(qi)它活(huo)塞發動(dong)機(ji)的(de)(de)(de)進氣(qi)和排氣(qi)口(kou)。阻(zu)抗(kang)復(fu)合(he)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)綜合(he)前兩種優(you)點制(zhi)成。在(zai)其(qi)(qi)(qi)內(nei)(nei)部既有(you)(you)阻(zu)性(xing)(xing)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)(cai)料，又有(you)(you)共振腔，擴張室等(deng)抗(kang)性(xing)(xing)濾波(bo)(bo)元件，因此在(zai)較寬(kuan)頻(pin)率范(fan)圍內(nei)(nei)有(you)(you)良(liang)(liang)好(hao)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效(xiao)果(guo)。