【柴(chai)油機(ji)消聲(sheng)器(qi)】柴(chai)油機(ji)消聲(sheng)器(qi)有(you)作用嗎(ma) 柴(chai)油機(ji)消聲(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排列(lie)，就(jiu)(jiu)構成了阻(zu)(zu)性消(xiao)(xiao)(xiao)音器。當(dang)聲(sheng)(sheng)(sheng)波進入阻(zu)(zu)性消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器時，一部分聲(sheng)(sheng)(sheng)能在(zai)多孔(kong)材(cai)料的孔(kong)隙中摩擦而轉化(hua)成熱能耗散掉，使通(tong)過(guo)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器的聲(sheng)(sheng)(sheng)波減(jian)弱。阻(zu)(zu)性消(xiao)(xiao)(xiao)音器器就(jiu)(jiu)好像電(dian)學(xue)上的純電(dian)阻(zu)(zu)電(dian)路，吸聲(sheng)(sheng)(sheng)材(cai)料類似于電(dian)阻(zu)(zu)。因此，人們就(jiu)(jiu)把這種消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器稱為阻(zu)(zu)性消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器。阻(zu)(zu)性消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器對(dui)中高頻消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)效(xiao)果奸、對(dui)低頻消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)效(xiao)果較(jiao)差。

柴油機消聲器有作用嗎

消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)按(an)其(qi)(qi)工作(zuo)(zuo)(zuo)原理可(ke)分為阻(zu)(zu)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)、抗(kang)(kang)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)和阻(zu)(zu)抗(kang)(kang)復合(he)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)。阻(zu)(zu)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)主要(yao)是(shi)(shi)用吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)料(liao)來消(xiao)減(jian)噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把(ba)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)料(liao)固定在(zai)氣(qi)(qi)流(liu)流(liu)通(tong)的(de)(de)(de)管(guan)道內壁(bi)或(huo)按(an)一定方(fang)式(shi)排列在(zai)管(guan)道中，當聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波進(jin)入消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)時，大(da)(da)部分聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能被吸收，起到消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)(zuo)用，阻(zu)(zu)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)的(de)(de)(de)優(you)(you)點是(shi)(shi)能在(zai)較(jiao)(jiao)寬的(de)(de)(de)中高(gao)(gao)(gao)頻(pin)(pin)范(fan)圍內消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特別(bie)對高(gao)(gao)(gao)頻(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波有(you)(you)突出的(de)(de)(de)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)(zuo)用。缺(que)(que)點是(shi)(shi)在(zai)高(gao)(gao)(gao)溫水蒸氣(qi)(qi)以(yi)及(ji)對吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)料(liao)有(you)(you)侵(qin)蝕作(zuo)(zuo)(zuo)用的(de)(de)(de)氣(qi)(qi)體(ti)中使用壽命較(jiao)(jiao)短。通(tong)常用于家(jia)庭、辦公室(shi)(shi)空調機；大(da)(da)型(xing)風洞，噴氣(qi)(qi)發(fa)動機試(shi)車間等處。抗(kang)(kang)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)又稱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學(xue)濾波器(qi)，它(ta)(ta)又分為共(gong)振式(shi)、擴(kuo)張(zhang)室(shi)(shi)式(shi)和干涉(she)式(shi)等幾種。最簡(jian)單的(de)(de)(de)擴(kuo)張(zhang)室(shi)(shi)式(shi)是(shi)(shi)在(zai)氣(qi)(qi)流(liu)通(tong)道管(guan)上接一段截面(mian)較(jiao)(jiao)大(da)(da)的(de)(de)(de)粗管(guan)，但其(qi)(qi)終端是(shi)(shi)細(xi)管(guan)，調節擴(kuo)張(zhang)室(shi)(shi)（大(da)(da)管(guan)）的(de)(de)(de)截面(mian)扣長(chang)度以(yi)改(gai)變聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波的(de)(de)(de)反射和干涉(she)性(xing)(xing)能，從而(er)改(gai)變消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)和最大(da)(da)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)率(lv)。它(ta)(ta)與阻(zu)(zu)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)不(bu)同之(zhi)處在(zai)于其(qi)(qi)中沒有(you)(you)放置吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)料(liao)，抗(kang)(kang)性(xing)(xing)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)的(de)(de)(de)優(you)(you)點是(shi)(shi)結構簡(jian)單，耐高(gao)(gao)(gao)溫耐氣(qi)(qi)體(ti)侵(qin)蝕，有(you)(you)良(liang)好(hao)的(de)(de)(de)低(di)頻(pin)(pin)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)能．缺(que)(que)點是(shi)(shi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)帶窄，主要(yao)用于汽車發(fa)動機及(ji)其(qi)(qi)它(ta)(ta)活塞發(fa)動機的(de)(de)(de)進(jin)氣(qi)(qi)和排氣(qi)(qi)口。阻(zu)(zu)抗(kang)(kang)復合(he)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)綜合(he)前(qian)兩種優(you)(you)點制成(cheng)。在(zai)其(qi)(qi)內部既有(you)(you)阻(zu)(zu)性(xing)(xing)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)(cai)料(liao)，又有(you)(you)共(gong)振腔，擴(kuo)張(zhang)室(shi)(shi)等抗(kang)(kang)性(xing)(xing)濾波元件(jian)，因(yin)此(ci)在(zai)較(jiao)(jiao)寬頻(pin)(pin)率(lv)范(fan)圍內有(you)(you)良(liang)好(hao)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效果。