1、機(ji)房空(kong)調機(ji)械方面的(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)與噪(zao)(zao)聲(sheng)轉子(zi)(zi)及其裝配(pei)件(jian)的(de)(de)不(bu)平衡;轉子(zi)(zi)嚙合、轉子(zi)(zi)轉速波動(dong)(dong)(dong)引起的(de)(de)沖(chong)擊噪(zao)(zao)聲(sheng);開啟(qi)式螺(luo)桿式制(zhi)冷壓縮(suo)機(ji)的(de)(de)電動(dong)(dong)(dong)機(ji)與聯軸(zhou)器不(bu)對中引起的(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)與噪(zao)(zao)聲(sheng);軸(zhou)承振(zhen)(zhen)動(dong)(dong)(dong)與噪(zao)(zao)聲(sheng)。機(ji)體外部包括機(ji)殼、支撐結構、底座的(de)(de)振(zhen)(zhen)動(dong)(dong)(dong)與噪(zao)(zao)聲(sheng)。

　　2、流體誘發的噪聲

　　包括氣(qi)(qi)流(liu)噪(zao)(zao)聲(sheng)(sheng)和(he)油流(liu)噪(zao)(zao)聲(sheng)(sheng)。氣(qi)(qi)流(liu)噪(zao)(zao)聲(sheng)(sheng)寶要是吸(xi)氣(qi)(qi)、排氣(qi)(qi)噪(zao)(zao)聲(sheng)(sheng)，包括氣(qi)(qi)體迸(beng)、出吸(xi)排氣(qi)(qi)腔及轉子齒槽基元容積時(shi)形成的(de)渦流(liu)噪(zao)(zao)聲(sheng)(sheng)，排氣(qi)(qi)過程(cheng)中(zhong)回流(liu)和(he)膨脹產生的(de)噴流(liu)噪(zao)(zao)聲(sheng)(sheng);氣(qi)(qi)流(liu)管道脈動及彎頭振(zhen)動噪(zao)(zao)聲(sheng)(sheng);吸(xi)氣(qi)(qi)、排氣(qi)(qi)止回閥(fa)噪(zao)(zao)聲(sheng)(sheng)。油流(liu)噪(zao)(zao)聲(sheng)(sheng)包括噴油噪(zao)(zao)聲(sheng)(sheng)、油流(liu)管道噪(zao)(zao)聲(sheng)(sheng)、油泵(beng)氣(qi)(qi)穴等。

　　3、電氣噪聲

　　對于開啟式螺桿式制冷壓(ya)縮機(ji)，電(dian)動(dong)(dong)機(ji)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)由(you)通(tong)風(feng)(feng)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)、機(ji)械(xie)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)和(he)電(dian)磁噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)等組(zu)成。一般通(tong)風(feng)(feng)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)較(jiao)(jiao)大，機(ji)械(xie)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)中(zhong)的(de)滾動(dong)(dong)軸承(cheng)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)次之，滑動(dong)(dong)軸承(cheng)的(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)較(jiao)(jiao)小(xiao)。電(dian)磁噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)是電(dian)動(dong)(dong)機(ji)中(zhong)特有的(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)，它(ta)屬(shu)于機(ji)械(xie)性噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)，是由(you)定(ding)子、轉子間氣(qi)隙中(zhong)的(de)諧(xie)波(bo)磁場力波(bo)引起(qi)的(de)。當電(dian)源電(dian)壓(ya)不(bu)穩定(ding)時，最容易(yi)產生電(dian)磁振動(dong)(dong)和(he)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)。

　　4、機組噪聲

　　包括油分離器、蒸(zheng)發器、冷卻(que)系統的振動與(yu)噪(zao)聲。

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