下面介紹一(yi)下工業風扇的運(yun)用及(ji)工業風扇常見噪聲的來源。

工(gong)(gong)(gong)(gong)業風(feng)(feng)扇是(shi)一(yi)款廣泛應(ying)用于工(gong)(gong)(gong)(gong)業廠(chang)房、物流倉儲、候(hou)車室、展覽(lan)館、體(ti)育(yu)館、商(shang)超等等高大空(kong)間(jian)，作(zuo)為空(kong)間(jian)通風(feng)(feng)，人員降溫的一(yi)種常(chang)見(jian)工(gong)(gong)(gong)(gong)業用機器。工(gong)(gong)(gong)(gong)業風(feng)(feng)扇可推(tui)射大量氣流到(dao)地(di)面，在地(di)面形(xing)成一(yi)定高度的氣流層水平運動，從(cong)而促成了整(zheng)體(ti)空(kong)氣循(xun)環，這樣的好處在于全方位的地(di)面覆蓋(gai)和空(kong)氣的立(li)體(ti)循(xun)環。但是(shi)在工(gong)(gong)(gong)(gong)廠(chang)中(zhong)(zhong)工(gong)(gong)(gong)(gong)業風(feng)(feng)扇工(gong)(gong)(gong)(gong)作(zuo)中(zhong)(zhong)勢(shi)必會(hui)產生噪(zao)音，瑞泰公司(si)總結幾點工(gong)(gong)(gong)(gong)業風(feng)(feng)扇出現噪(zao)音的原因。

振動

假設工業風扇轉(zhuan)(zhuan)子(zi)(zi)(zi)轉(zhuan)(zhuan)動(dong)時轉(zhuan)(zhuan)子(zi)(zi)(zi)的物(wu)(wu)理質(zhi)心(xin)與(yu)轉(zhuan)(zhuan)軸(zhou)慣(guan)性中心(xin)不在同一(yi)軸(zhou)上，便會(hui)造成(cheng)轉(zhuan)(zhuan)子(zi)(zi)(zi)的不平衡。轉(zhuan)(zhuan)子(zi)(zi)(zi)的物(wu)(wu)理質(zhi)心(xin)與(yu)轉(zhuan)(zhuan)軸(zhou)慣(guan)性中心(xin)的最近距離稱為偏(pian)心(xin)距，轉(zhuan)(zhuan)子(zi)(zi)(zi)不平衡造成(cheng)偏(pian)心(xin)距，當轉(zhuan)(zhuan)子(zi)(zi)(zi)轉(zhuan)(zhuan)動(dong)時由于(yu)離心(xin)力(li)的作用產生一(yi)作用力(li)于(yu)轉(zhuan)(zhuan)軸(zhou)支架而形成(cheng)振(zhen)動(dong)，且振(zhen)動(dong)經由基路(lu)徑(jing)傳(chuan)遞到機械(xie)各部份。

風噪

工業風(feng)扇工作時，由于葉(xie)片(pian)(pian)周(zhou)(zhou)期性地承受(shou)出口不均勻(yun)氣(qi)流的脈(mo)(mo)動(dong)(dong)力作用，產(chan)生噪(zao)聲;另(ling)一方面，由于葉(xie)片(pian)(pian)本(ben)身及(ji)葉(xie)片(pian)(pian)上壓(ya)力的不均勻(yun)分(fen)布(bu)，轉(zhuan)動(dong)(dong)時對周(zhou)(zhou)圍氣(qi)體及(ji)零件的擾(rao)動(dong)(dong)也(ye)構成旋轉(zhuan)噪(zao)聲;此外(wai)由于氣(qi)體流經葉(xie)片(pian)(pian)時產(chan)生湍流附層面、旋渦及(ji)旋渦脫(tuo)離，引起葉(xie)片(pian)(pian)上壓(ya)力分(fen)布(bu)的脈(mo)(mo)動(dong)(dong)而產(chan)生渦流噪(zao)聲。這(zhe)三種原因所(suo)引起的噪(zao)音可(ke)以綜合性地稱(cheng)為“切(qie)風(feng)噪(zao)音”,一般風(feng)量風(feng)壓(ya)大的工業風(feng)扇，其(qi)切(qie)風(feng)噪(zao)聲也(ye)較(jiao)大。

異音

風(feng)噪聽起(qi)來只有(you)(you)單(dan)純的風(feng)聲(sheng)，而異音(yin)則(ze)不(bu)同，工業(ye)風(feng)扇(shan)運轉(zhuan)時(shi)，除風(feng)聲(sheng)外，若還有(you)(you)其它聲(sheng)音(yin)發出(chu)，即(ji)可(ke)(ke)判(pan)斷工業(ye)風(feng)扇(shan)出(chu)現(xian)了(le)異音(yin)。異音(yin)可(ke)(ke)能因軸承內(nei)有(you)(you)異物或變形，以及組裝不(bu)當而出(chu)現(xian)碰撞，或電(dian)機繞組纏繞不(bu)均，造成(cheng)松脫(tuo)，都可(ke)(ke)能產生異音(yin)。