【柴油機消(xiao)聲器】柴油機消(xiao)聲器有作用嗎 柴油機消(xiao)聲器原理

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，就構成了(le)阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)音(yin)器(qi)(qi)(qi)(qi)。當聲(sheng)(sheng)波進(jin)入(ru)阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)(qi)(qi)時，一部(bu)分聲(sheng)(sheng)能(neng)(neng)在多孔材料的(de)孔隙中(zhong)摩擦而轉(zhuan)化成熱能(neng)(neng)耗散(san)掉(diao)，使通過消(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)(qi)(qi)的(de)聲(sheng)(sheng)波減(jian)弱。阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)音(yin)器(qi)(qi)(qi)(qi)器(qi)(qi)(qi)(qi)就好像(xiang)電(dian)(dian)學上的(de)純(chun)電(dian)(dian)阻(zu)電(dian)(dian)路，吸聲(sheng)(sheng)材料類似于電(dian)(dian)阻(zu)。因此，人們就把這種(zhong)消(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)(qi)(qi)稱(cheng)為(wei)阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)(qi)(qi)。阻(zu)性(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)(qi)(qi)對中(zhong)高頻消(xiao)(xiao)(xiao)聲(sheng)(sheng)效果(guo)奸、對低頻消(xiao)(xiao)(xiao)聲(sheng)(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)器(qi)(qi)按(an)其(qi)(qi)工作(zuo)原理可分為阻(zu)(zu)性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)、抗性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)和(he)阻(zu)(zu)抗復合(he)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)。阻(zu)(zu)性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)主(zhu)要是用(yong)(yong)(yong)吸聲(sheng)材(cai)(cai)料來消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)減噪聲(sheng)，把吸聲(sheng)材(cai)(cai)料固定(ding)在(zai)(zai)氣(qi)(qi)(qi)流流通(tong)(tong)的(de)(de)(de)(de)管(guan)道內壁或按(an)一(yi)定(ding)方式(shi)排(pai)列(lie)在(zai)(zai)管(guan)道中(zhong)，當(dang)聲(sheng)波(bo)(bo)進(jin)入消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)時，大(da)(da)部分聲(sheng)能(neng)被吸收，起(qi)到消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)作(zuo)用(yong)(yong)(yong)，阻(zu)(zu)性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)的(de)(de)(de)(de)優點(dian)(dian)(dian)是能(neng)在(zai)(zai)較(jiao)(jiao)寬的(de)(de)(de)(de)中(zhong)高(gao)頻(pin)(pin)范圍內消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)，特(te)別對(dui)高(gao)頻(pin)(pin)聲(sheng)波(bo)(bo)有(you)(you)突出的(de)(de)(de)(de)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)作(zuo)用(yong)(yong)(yong)。缺(que)點(dian)(dian)(dian)是在(zai)(zai)高(gao)溫(wen)水蒸氣(qi)(qi)(qi)以(yi)及(ji)對(dui)吸聲(sheng)材(cai)(cai)料有(you)(you)侵蝕(shi)作(zuo)用(yong)(yong)(yong)的(de)(de)(de)(de)氣(qi)(qi)(qi)體(ti)中(zhong)使用(yong)(yong)(yong)壽(shou)命較(jiao)(jiao)短。通(tong)(tong)常(chang)用(yong)(yong)(yong)于(yu)家庭、辦公室(shi)空(kong)調(diao)機(ji)(ji)(ji)；大(da)(da)型風(feng)洞，噴氣(qi)(qi)(qi)發(fa)動機(ji)(ji)(ji)試車間(jian)等處。抗性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)又稱聲(sheng)學濾波(bo)(bo)器(qi)(qi)，它又分為共振(zhen)(zhen)式(shi)、擴(kuo)張(zhang)室(shi)式(shi)和(he)干(gan)涉式(shi)等幾種。最(zui)簡單的(de)(de)(de)(de)擴(kuo)張(zhang)室(shi)式(shi)是在(zai)(zai)氣(qi)(qi)(qi)流通(tong)(tong)道管(guan)上接一(yi)段截面較(jiao)(jiao)大(da)(da)的(de)(de)(de)(de)粗管(guan)，但其(qi)(qi)終端是細管(guan)，調(diao)節擴(kuo)張(zhang)室(shi)（大(da)(da)管(guan)）的(de)(de)(de)(de)截面扣長度以(yi)改(gai)(gai)變(bian)聲(sheng)波(bo)(bo)的(de)(de)(de)(de)反射和(he)干(gan)涉性(xing)能(neng)，從而改(gai)(gai)變(bian)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)量和(he)最(zui)大(da)(da)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)頻(pin)(pin)率。它與阻(zu)(zu)性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)不同之處在(zai)(zai)于(yu)其(qi)(qi)中(zhong)沒有(you)(you)放(fang)置(zhi)吸聲(sheng)材(cai)(cai)料，抗性(xing)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)的(de)(de)(de)(de)優點(dian)(dian)(dian)是結構簡單，耐高(gao)溫(wen)耐氣(qi)(qi)(qi)體(ti)侵蝕(shi)，有(you)(you)良好(hao)(hao)的(de)(de)(de)(de)低頻(pin)(pin)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)性(xing)能(neng)．缺(que)點(dian)(dian)(dian)是消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)頻(pin)(pin)帶窄，主(zhu)要用(yong)(yong)(yong)于(yu)汽車發(fa)動機(ji)(ji)(ji)及(ji)其(qi)(qi)它活(huo)塞發(fa)動機(ji)(ji)(ji)的(de)(de)(de)(de)進(jin)氣(qi)(qi)(qi)和(he)排(pai)氣(qi)(qi)(qi)口(kou)。阻(zu)(zu)抗復合(he)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)器(qi)(qi)綜合(he)前兩種優點(dian)(dian)(dian)制(zhi)成。在(zai)(zai)其(qi)(qi)內部既有(you)(you)阻(zu)(zu)性(xing)吸聲(sheng)材(cai)(cai)料，又有(you)(you)共振(zhen)(zhen)腔，擴(kuo)張(zhang)室(shi)等抗性(xing)濾波(bo)(bo)元件(jian)，因此在(zai)(zai)較(jiao)(jiao)寬頻(pin)(pin)率范圍內有(you)(you)良好(hao)(hao)消(xiao)(xiao)(xiao)(xiao)(xiao)(xiao)聲(sheng)效果。