如(ru)何解(jie)決(jue)(jue)冷(leng)(leng)(leng)(leng)(leng)(leng)水(shui)機制(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)(xi)統(tong)堵塞故障?冷(leng)(leng)(leng)(leng)(leng)(leng)水(shui)機制(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)(xi)統(tong)堵塞主要是由于冰(bing)堵、毛細管臟(zang)堵或油堵，或干燥(zao)過濾器臟(zang)堵造成的。制(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)(xi)統(tong)堵塞后(hou)，由于制(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)劑不能(neng)循環，壓縮(suo)機長時間連續運行，箱內制(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)不冷(leng)(leng)(leng)(leng)(leng)(leng)或慢(man)，冷(leng)(leng)(leng)(leng)(leng)(leng)凝器不熱。下面詳(xiang)細介紹一(yi)下制(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)(xi)統(tong)堵塞的解(jie)決(jue)(jue)方法。

冰封成因及故障現象

    冷(leng)水(shui)機的(de)堵(du)冰故障(zhang)主要是由于制(zhi)冷(leng)系(xi)統中含有(you)過(guo)量(liang)的(de)水(shui)造(zao)成的(de)。隨著制(zhi)冷(leng)劑的(de)不斷循(xun)環，制(zhi)冷(leng)系(xi)統中的(de)水(shui)逐漸集中在毛(mao)細(xi)出(chu)口處。由于毛(mao)細(xi)出(chu)口溫度(du)Z較(jiao)低(di)，水(shui)形成冰，逐漸增多。在一定程度(du)上，毛(mao)細(xi)血管(guan)被完全堵(du)塞，制(zhi)冷(leng)劑無法循(xun)環，冰箱無法制(zhi)冷(leng)。

冷(leng)(leng)水(shui)(shui)(shui)(shui)機制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)的(de)(de)主(zhu)要水(shui)(shui)(shui)(shui)源(yuan)是壓縮(suo)機內的(de)(de)電機絕緣紙(zhi)含(han)水(shui)(shui)(shui)(shui)，是系(xi)(xi)統(tong)(tong)的(de)(de)主(zhu)要水(shui)(shui)(shui)(shui)源(yuan)。此外，制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)的(de)(de)部件和(he)連(lian)接管道(dao)中(zhong)(zhong)由(you)(you)于(yu)干(gan)燥(zao)不足而殘留的(de)(de)水(shui)(shui)(shui)(shui)分(fen);冷(leng)(leng)凍(dong)油和(he)冷(leng)(leng)凍(dong)液(ye)含(han)水(shui)(shui)(shui)(shui)超標;在裝配(pei)或維(wei)修過程中(zhong)(zhong)，管道(dao)長期(qi)處于(yu)發展(zhan)狀(zhuang)態，導(dao)致空(kong)氣中(zhong)(zhong)的(de)(de)水(shui)(shui)(shui)(shui)分(fen)被(bei)電機絕緣紙(zhi)和(he)冷(leng)(leng)凍(dong)油吸收。由(you)(you)于(yu)以上原因，導(dao)致制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)含(han)水(shui)(shui)(shui)(shui)量(liang)(liang)超過制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統(tong)(tong)允許(xu)的(de)(de)量(liang)(liang)，發生(sheng)堵冰。一方面(mian)(mian)，冰堵導(dao)致制(zhi)(zhi)冷(leng)(leng)劑不能循環，冰箱不能正常(chang)制(zhi)(zhi)冷(leng)(leng);另一方面(mian)(mian)，水(shui)(shui)(shui)(shui)會與制(zhi)(zhi)冷(leng)(leng)劑發生(sheng)化     學反(fan)應，產生(sheng)鹽酸和(he)氟化氫(qing)，會對金屬管道(dao)和(he)部件造成腐(fu)蝕(shi)，甚至(zhi)會破壞電機繞組的(de)(de)絕緣。同(tong)時也會造成制(zhi)(zhi)冷(leng)(leng)油變質(zhi)，影(ying)響壓縮(suo)機的(de)(de)潤滑。因此，必(bi)須將系(xi)(xi)統(tong)(tong)中(zhong)(zhong)的(de)(de)水(shui)(shui)(shui)(shui)分(fen)控(kong)制(zhi)(zhi)在Z的(de)(de)下限。

螺桿(gan)式冷(leng)(leng)(leng)水機組制(zhi)(zhi)冷(leng)(leng)(leng)系統(tong)冰堵表明Z初期(qi)工作正常，蒸發(fa)器(qi)出現結霜，冷(leng)(leng)(leng)凝器(qi)升(sheng)溫，機組運(yun)行穩定，蒸發(fa)器(qi)內制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)活動聲音清(qing)晰穩定。隨著(zhu)冰堵塞(sai)的形成(cheng)，可以(yi)聽到氣(qi)流(liu)逐漸(jian)減弱和(he)間(jian)歇(xie)性(xing)。堵塞(sai)嚴重時(shi)，氣(qi)流(liu)聲消失，制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)循環中斷，冷(leng)(leng)(leng)凝器(qi)逐漸(jian)冷(leng)(leng)(leng)卻。由于堵塞(sai)，排氣(qi)壓力(li)增大，機器(qi)運(yun)行聲音增大，沒有制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)流(liu)入(ru)蒸發(fa)器(qi)，結霜面積逐漸(jian)減小，溫度也逐漸(jian)升(sheng)高，毛細血管溫度也升(sheng)高，于是冰開(kai)始(shi)融化，制(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)又(you)開(kai)始(shi)循環。經過(guo)一段(duan)時(shi)間(jian)后，冰塞(sai)又(you)會再次發(fa)生，形成(cheng)周(zhou)期(qi)性(xing)的通堵現象。