如何解決(jue)冷(leng)(leng)(leng)水機制(zhi)(zhi)冷(leng)(leng)(leng)系(xi)統(tong)(tong)堵(du)塞故障?冷(leng)(leng)(leng)水機制(zhi)(zhi)冷(leng)(leng)(leng)系(xi)統(tong)(tong)堵(du)塞主(zhu)要是由于(yu)冰堵(du)、毛細(xi)管(guan)臟(zang)堵(du)或(huo)油堵(du)，或(huo)干(gan)燥過濾器(qi)臟(zang)堵(du)造成的(de)。制(zhi)(zhi)冷(leng)(leng)(leng)系(xi)統(tong)(tong)堵(du)塞后，由于(yu)制(zhi)(zhi)冷(leng)(leng)(leng)劑不能循環，壓(ya)縮機長時間連續運(yun)行，箱內制(zhi)(zhi)冷(leng)(leng)(leng)不冷(leng)(leng)(leng)或(huo)慢，冷(leng)(leng)(leng)凝(ning)器(qi)不熱(re)。下面詳細(xi)介紹一下制(zhi)(zhi)冷(leng)(leng)(leng)系(xi)統(tong)(tong)堵(du)塞的(de)解決(jue)方法。

冰封成因及故障現象

    冷水(shui)機的(de)堵冰故障主要是由(you)于制(zhi)冷系(xi)統中含有(you)過量的(de)水(shui)造成的(de)。隨著(zhu)制(zhi)冷劑(ji)的(de)不斷循(xun)環(huan)，制(zhi)冷系(xi)統中的(de)水(shui)逐(zhu)漸(jian)集中在毛細出口(kou)(kou)處。由(you)于毛細出口(kou)(kou)溫度Z較低，水(shui)形成冰，逐(zhu)漸(jian)增多。在一定(ding)程(cheng)度上，毛細血管被完全(quan)堵塞，制(zhi)冷劑(ji)無(wu)法循(xun)環(huan)，冰箱無(wu)法制(zhi)冷。

冷(leng)(leng)(leng)(leng)(leng)水(shui)(shui)機(ji)(ji)制(zhi)冷(leng)(leng)(leng)(leng)(leng)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)主(zhu)要(yao)(yao)水(shui)(shui)源是壓(ya)縮機(ji)(ji)內(nei)的(de)(de)電機(ji)(ji)絕緣紙(zhi)(zhi)含(han)水(shui)(shui)，是系(xi)(xi)(xi)統(tong)(tong)的(de)(de)主(zhu)要(yao)(yao)水(shui)(shui)源。此外，制(zhi)冷(leng)(leng)(leng)(leng)(leng)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)部件和(he)連接管(guan)道(dao)中由于干燥不足而殘留的(de)(de)水(shui)(shui)分;冷(leng)(leng)(leng)(leng)(leng)凍(dong)油(you)和(he)冷(leng)(leng)(leng)(leng)(leng)凍(dong)液(ye)含(han)水(shui)(shui)超標;在裝(zhuang)配或維(wei)修過(guo)程(cheng)中，管(guan)道(dao)長期處于發(fa)展狀態(tai)，導(dao)致空氣中的(de)(de)水(shui)(shui)分被電機(ji)(ji)絕緣紙(zhi)(zhi)和(he)冷(leng)(leng)(leng)(leng)(leng)凍(dong)油(you)吸(xi)收。由于以上原因，導(dao)致制(zhi)冷(leng)(leng)(leng)(leng)(leng)系(xi)(xi)(xi)統(tong)(tong)含(han)水(shui)(shui)量超過(guo)制(zhi)冷(leng)(leng)(leng)(leng)(leng)系(xi)(xi)(xi)統(tong)(tong)允許的(de)(de)量，發(fa)生堵冰(bing)。一方(fang)面，冰(bing)堵導(dao)致制(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)不能循環，冰(bing)箱(xiang)不能正常制(zhi)冷(leng)(leng)(leng)(leng)(leng);另(ling)一方(fang)面，水(shui)(shui)會與(yu)制(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)發(fa)生化     學(xue)反(fan)應，產生鹽(yan)酸和(he)氟化氫，會對金(jin)屬管(guan)道(dao)和(he)部件造(zao)成腐蝕，甚至會破(po)壞電機(ji)(ji)繞(rao)組的(de)(de)絕緣。同時也會造(zao)成制(zhi)冷(leng)(leng)(leng)(leng)(leng)油(you)變質，影響壓(ya)縮機(ji)(ji)的(de)(de)潤滑。因此，必須將系(xi)(xi)(xi)統(tong)(tong)中的(de)(de)水(shui)(shui)分控制(zhi)在Z的(de)(de)下(xia)限。

螺桿式(shi)冷(leng)(leng)(leng)水機(ji)組(zu)制冷(leng)(leng)(leng)系統(tong)冰(bing)堵表(biao)明(ming)Z初(chu)期工(gong)作正常(chang)，蒸發(fa)器出現(xian)結霜，冷(leng)(leng)(leng)凝器升(sheng)溫，機(ji)組(zu)運行(xing)穩定，蒸發(fa)器內制冷(leng)(leng)(leng)劑(ji)活動聲(sheng)音清(qing)晰穩定。隨(sui)著冰(bing)堵塞的(de)形(xing)成(cheng)，可以聽到氣流逐(zhu)漸減弱和間歇性。堵塞嚴重時(shi)，氣流聲(sheng)消失，制冷(leng)(leng)(leng)劑(ji)循(xun)環(huan)中斷，冷(leng)(leng)(leng)凝器逐(zhu)漸冷(leng)(leng)(leng)卻。由于堵塞，排氣壓力增(zeng)大，機(ji)器運行(xing)聲(sheng)音增(zeng)大，沒(mei)有(you)制冷(leng)(leng)(leng)劑(ji)流入蒸發(fa)器，結霜面積(ji)逐(zhu)漸減小，溫度也逐(zhu)漸升(sheng)高(gao)，毛細血管(guan)溫度也升(sheng)高(gao)，于是(shi)冰(bing)開始融化(hua)，制冷(leng)(leng)(leng)劑(ji)又開始循(xun)環(huan)。經過一段時(shi)間后(hou)，冰(bing)塞又會(hui)再次(ci)發(fa)生，形(xing)成(cheng)周期性的(de)通堵現(xian)象。