【柴(chai)油機消(xiao)聲(sheng)(sheng)器(qi)】柴(chai)油機消(xiao)聲(sheng)(sheng)器(qi)有作用嗎 柴(chai)油機消(xiao)聲(sheng)(sheng)器(qi)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(le)阻性(xing)(xing)消(xiao)(xiao)音(yin)(yin)器(qi)。當聲(sheng)(sheng)(sheng)波進(jin)入阻性(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)時，一部分聲(sheng)(sheng)(sheng)能(neng)在多孔(kong)材料(liao)的孔(kong)隙中(zhong)摩擦而(er)轉化成熱能(neng)耗散掉，使(shi)通過消(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)的聲(sheng)(sheng)(sheng)波減弱。阻性(xing)(xing)消(xiao)(xiao)音(yin)(yin)器(qi)器(qi)就(jiu)好像(xiang)電(dian)(dian)學上的純電(dian)(dian)阻電(dian)(dian)路，吸聲(sheng)(sheng)(sheng)材料(liao)類似于電(dian)(dian)阻。因此，人們就(jiu)把這(zhe)種(zhong)消(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)稱為阻性(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)。阻性(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)對中(zhong)高(gao)頻消(xiao)(xiao)聲(sheng)(sheng)(sheng)效果奸、對低頻消(xiao)(xiao)聲(sheng)(sheng)(sheng)效果較(jiao)差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)按其工(gong)作原理可分(fen)為阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)、抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)和(he)(he)(he)阻(zu)抗(kang)復合(he)(he)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)。阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)主要是(shi)用(yong)(yong)(yong)(yong)吸聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)來消(xiao)(xiao)(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)，把吸聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)固定(ding)在(zai)(zai)氣(qi)(qi)流流通的(de)(de)(de)管(guan)道(dao)(dao)內(nei)壁或按一定(ding)方(fang)式排列在(zai)(zai)管(guan)道(dao)(dao)中(zhong)(zhong)，當聲(sheng)(sheng)(sheng)(sheng)波(bo)進入(ru)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)時，大(da)部分(fen)聲(sheng)(sheng)(sheng)(sheng)能(neng)被吸收，起到消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)(yong)(yong)，阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)的(de)(de)(de)優點是(shi)能(neng)在(zai)(zai)較(jiao)寬的(de)(de)(de)中(zhong)(zhong)高(gao)(gao)頻范圍內(nei)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)，特別(bie)對高(gao)(gao)頻聲(sheng)(sheng)(sheng)(sheng)波(bo)有(you)突出的(de)(de)(de)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)(yong)(yong)。缺點是(shi)在(zai)(zai)高(gao)(gao)溫(wen)水蒸氣(qi)(qi)以及對吸聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)有(you)侵(qin)蝕(shi)作用(yong)(yong)(yong)(yong)的(de)(de)(de)氣(qi)(qi)體(ti)中(zhong)(zhong)使用(yong)(yong)(yong)(yong)壽命較(jiao)短。通常用(yong)(yong)(yong)(yong)于家庭(ting)、辦公室(shi)(shi)空調(diao)機(ji)；大(da)型(xing)風洞，噴(pen)氣(qi)(qi)發(fa)動機(ji)試車(che)(che)間等處。抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)又(you)稱聲(sheng)(sheng)(sheng)(sheng)學濾(lv)波(bo)器(qi)(qi)，它(ta)又(you)分(fen)為共振(zhen)式、擴張(zhang)室(shi)(shi)式和(he)(he)(he)干(gan)涉式等幾(ji)種。最簡單(dan)的(de)(de)(de)擴張(zhang)室(shi)(shi)式是(shi)在(zai)(zai)氣(qi)(qi)流通道(dao)(dao)管(guan)上接一段截面較(jiao)大(da)的(de)(de)(de)粗管(guan)，但其終(zhong)端是(shi)細管(guan)，調(diao)節擴張(zhang)室(shi)(shi)（大(da)管(guan)）的(de)(de)(de)截面扣長度以改變(bian)聲(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)(de)反射和(he)(he)(he)干(gan)涉性(xing)(xing)能(neng)，從而改變(bian)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)量和(he)(he)(he)最大(da)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)頻率(lv)。它(ta)與(yu)阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)不同之處在(zai)(zai)于其中(zhong)(zhong)沒有(you)放置吸聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)，抗(kang)性(xing)(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)的(de)(de)(de)優點是(shi)結構簡單(dan)，耐高(gao)(gao)溫(wen)耐氣(qi)(qi)體(ti)侵(qin)蝕(shi)，有(you)良(liang)好(hao)的(de)(de)(de)低頻消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)性(xing)(xing)能(neng)．缺點是(shi)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)頻帶窄，主要用(yong)(yong)(yong)(yong)于汽車(che)(che)發(fa)動機(ji)及其它(ta)活(huo)塞發(fa)動機(ji)的(de)(de)(de)進氣(qi)(qi)和(he)(he)(he)排氣(qi)(qi)口(kou)。阻(zu)抗(kang)復合(he)(he)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)綜合(he)(he)前兩種優點制成。在(zai)(zai)其內(nei)部既有(you)阻(zu)性(xing)(xing)吸聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)，又(you)有(you)共振(zhen)腔(qiang)，擴張(zhang)室(shi)(shi)等抗(kang)性(xing)(xing)濾(lv)波(bo)元(yuan)件，因此(ci)在(zai)(zai)較(jiao)寬頻率(lv)范圍內(nei)有(you)良(liang)好(hao)消(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)效果。