【柴油(you)機(ji)消聲(sheng)器(qi)】柴油(you)機(ji)消聲(sheng)器(qi)有作用嗎(ma) 柴油(you)機(ji)消聲(sheng)器(qi)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(zhong)排列，就(jiu)構成了阻(zu)(zu)性(xing)消(xiao)(xiao)音器。當(dang)聲(sheng)(sheng)波進入阻(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)器時，一部分(fen)聲(sheng)(sheng)能在多(duo)孔(kong)材料的孔(kong)隙中(zhong)摩擦而轉化成熱能耗散掉，使通過消(xiao)(xiao)聲(sheng)(sheng)器的聲(sheng)(sheng)波減弱。阻(zu)(zu)性(xing)消(xiao)(xiao)音器器就(jiu)好像電(dian)學(xue)上的純電(dian)阻(zu)(zu)電(dian)路(lu)，吸聲(sheng)(sheng)材料類似于電(dian)阻(zu)(zu)。因此，人們就(jiu)把這種消(xiao)(xiao)聲(sheng)(sheng)器稱(cheng)為阻(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)器。阻(zu)(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)器對(dui)中(zhong)高頻(pin)消(xiao)(xiao)聲(sheng)(sheng)效果(guo)奸(jian)、對(dui)低頻(pin)消(xiao)(xiao)聲(sheng)(sheng)效果(guo)較差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)按其(qi)工作原理可(ke)分(fen)為阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)、抗(kang)(kang)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)和(he)阻(zu)(zu)抗(kang)(kang)復合消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)。阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)主(zhu)要是(shi)(shi)(shi)用(yong)(yong)(yong)(yong)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)(liao)來消(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)(liao)固定在(zai)(zai)氣(qi)(qi)流(liu)流(liu)通(tong)的(de)(de)管(guan)(guan)道(dao)內壁(bi)或按一(yi)(yi)定方式排列在(zai)(zai)管(guan)(guan)道(dao)中，當聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)進入(ru)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)時，大(da)(da)部(bu)(bu)分(fen)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能被吸收，起(qi)到消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)(yong)(yong)，阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)的(de)(de)優點(dian)是(shi)(shi)(shi)能在(zai)(zai)較(jiao)(jiao)寬的(de)(de)中高頻范圍(wei)內消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特(te)別對高頻聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)有(you)(you)突出的(de)(de)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)(yong)(yong)。缺(que)點(dian)是(shi)(shi)(shi)在(zai)(zai)高溫水蒸氣(qi)(qi)以及對吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)(liao)有(you)(you)侵蝕作用(yong)(yong)(yong)(yong)的(de)(de)氣(qi)(qi)體中使用(yong)(yong)(yong)(yong)壽命較(jiao)(jiao)短。通(tong)常用(yong)(yong)(yong)(yong)于(yu)家庭(ting)、辦公室空調機(ji)；大(da)(da)型風洞，噴氣(qi)(qi)發動機(ji)試(shi)車(che)間等(deng)處。抗(kang)(kang)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)又(you)(you)稱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學濾(lv)波(bo)器(qi)(qi)，它又(you)(you)分(fen)為共振(zhen)式、擴(kuo)(kuo)張室式和(he)干涉(she)式等(deng)幾種。最簡(jian)單的(de)(de)擴(kuo)(kuo)張室式是(shi)(shi)(shi)在(zai)(zai)氣(qi)(qi)流(liu)通(tong)道(dao)管(guan)(guan)上接(jie)一(yi)(yi)段截面較(jiao)(jiao)大(da)(da)的(de)(de)粗(cu)管(guan)(guan)，但(dan)其(qi)終端是(shi)(shi)(shi)細管(guan)(guan)，調節擴(kuo)(kuo)張室（大(da)(da)管(guan)(guan)）的(de)(de)截面扣(kou)長(chang)度以改變(bian)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)反射(she)和(he)干涉(she)性(xing)(xing)能，從而改變(bian)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量和(he)最大(da)(da)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻率。它與阻(zu)(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)不同之處在(zai)(zai)于(yu)其(qi)中沒有(you)(you)放置吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)(liao)，抗(kang)(kang)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)的(de)(de)優點(dian)是(shi)(shi)(shi)結構簡(jian)單，耐(nai)高溫耐(nai)氣(qi)(qi)體侵蝕，有(you)(you)良好的(de)(de)低頻消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)能．缺(que)點(dian)是(shi)(shi)(shi)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻帶窄，主(zhu)要用(yong)(yong)(yong)(yong)于(yu)汽車(che)發動機(ji)及其(qi)它活塞發動機(ji)的(de)(de)進氣(qi)(qi)和(he)排氣(qi)(qi)口。阻(zu)(zu)抗(kang)(kang)復合消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)綜合前兩種優點(dian)制成。在(zai)(zai)其(qi)內部(bu)(bu)既有(you)(you)阻(zu)(zu)性(xing)(xing)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)(liao)，又(you)(you)有(you)(you)共振(zhen)腔，擴(kuo)(kuo)張室等(deng)抗(kang)(kang)性(xing)(xing)濾(lv)波(bo)元件，因此(ci)在(zai)(zai)較(jiao)(jiao)寬頻率范圍(wei)內有(you)(you)良好消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效(xiao)果。