[恒溫恒濕箱]如何檢測恒溫恒濕箱設備制冷循環故障
[恒溫恒濕箱]如何檢測恒溫恒濕箱設備制冷循環故障
我(wo)們(men)都知道恒溫恒濕箱(xiang)的(de)(de)制(zhi)(zhi)冷(leng)(leng)循環系(xi)(xi)統是一個由制(zhi)(zhi)冷(leng)(leng)壓(ya)縮機(ji)(ji)、冷(leng)(leng)凝(ning)器、干(gan)燥過濾器,毛(mao)細(xi)管(guan)和蒸發器經銅管(guan)焊接而成的(de)(de)封閉系(xi)(xi)統。在系(xi)(xi)統內充有一定量的(de)(de)制(zhi)(zhi)冷(leng)(leng)劑(ji),它(ta)在壓(ya)縮機(ji)(ji)的(de)(de)作用下,將蒸發器內吸收了熱量的(de)(de)低壓(ya)低溫氣態(tai)制(zhi)(zhi)冷(leng)(leng)劑(ji)變成高溫高壓(ya)的(de)(de)氣態(tai)制(zhi)(zhi)冷(leng)(leng)劑(ji),進入冷(leng)(leng)凝(ning)器冷(leng)(leng)卻(que)液化,形成制(zhi)(zhi)冷(leng)(leng)劑(ji),在制(zhi)(zhi)冷(leng)(leng)系(xi)(xi)統中不斷循環,達(da)到(dao)制(zhi)(zhi)冷(leng)(leng)的(de)(de)目的(de)(de)。
恒(heng)溫恒(heng)濕箱(xiang)的制(zhi)冷(leng)壓(ya)縮(suo)(suo)機(ji)是全(quan)封閉的,是使制(zhi)冷(leng)劑(ji)保持循環的動力。倘若試驗箱(xiang)制(zhi)冷(leng)壓(ya)縮(suo)(suo)機(ji)吸(xi)排(pai)氣(qi)(qi)管(guan)破裂或(huo)有(you)細小(xiao)氣(qi)(qi)孔泄漏,就會造成(cheng)系統的吸(xi)氣(qi)(qi)或(huo)排(pai)氣(qi)(qi)量減少(shao),制(zhi)冷(leng)壓(ya)縮(suo)(suo)機(ji)運轉時間延長(chang),蒸發器結霜(shuang)不全(quan)或(huo)不結霜(shuang),達不到制(zhi)冷(leng)目的。所以在使用中要注(zhu)意制(zhi)冷(leng)系統的管(guan)道(dao)的完好。
當恒(heng)溫恒(heng)濕箱(xiang)壓縮機吸(xi)排氣管因焊接或(huo)碰撞等原(yuan)因產(chan)生微小(xiao)的(de)泄漏時,用肥皂(zao)水檢查又不易發現,可以采(cai)用浸水方(fang)法進行(xing)檢查。
具體方法(fa)是(shi):將(jiang)壓縮(suo)機(ji)的高、低管(guan)(guan)(guan)道堵死,把(ba)氮氣試(shi)(shi)壓管(guan)(guan)(guan)接放工(gong)藝管(guan)(guan)(guan)充氣,再把(ba)壓縮(suo)機(ji)全部浸入水中,仔細觀察有無(wu)水泡出(chu)(chu)現,如有水泡出(chu)(chu)現,即表示(shi)泄(xie)(xie)漏(lou)。進行(xing)浸水試(shi)(shi)查(cha)找(zhao)出(chu)(chu)泄(xie)(xie)漏(lou)處的壓縮(suo)機(ji),需重新焊補泄(xie)(xie)漏(lou)處,并且進行(xing)烘干處理4小時以上方能重新使用。
當然,對于制冷循環(huan)故障,除了壓(ya)縮機的(de)問題之(zhi)外,通常還(huan)有電機的(de)運轉是(shi)(shi)(shi)否(fou)正(zheng)常、風循環(huan)的(de)調節擋板是(shi)(shi)(shi)否(fou)正(zheng)常開(kai)啟、試驗(yan)箱內是(shi)(shi)(shi)否(fou)濕(shi)度過高(gao),設備是(shi)(shi)(shi)否(fou)漏水,是(shi)(shi)(shi)否(fou)確實氟等等問題。
另外(wai)對(dui)于試驗箱壓(ya)(ya)(ya)縮(suo)(suo)機(ji)我(wo)們(men)需要了解的(de)是制冷(leng)(leng)壓(ya)(ya)(ya)縮(suo)(suo)機(ji)使(shi)用(yong)(yong)(yong)的(de)冷(leng)(leng)凍機(ji)油(you)不(bu)能用(yong)(yong)(yong)通用(yong)(yong)(yong)機(ji)油(you)來代替。另外(wai),對(dui)于力高恒(heng)溫恒(heng)濕設備來說,我(wo)們(men)通常采用(yong)(yong)(yong)的(de)壓(ya)(ya)(ya)縮(suo)(suo)機(ji)是螺桿式(shi)的(de),主要是因為當其制冷(leng)(leng)量大于15KW時(shi),螺桿式(shi)壓(ya)(ya)(ya)縮(suo)(suo)機(ji)的(de)制冷(leng)(leng)效率最好(hao)。對(dui)于其他壓(ya)(ya)(ya)縮(suo)(suo)機(ji),常用(yong)(yong)(yong)的(de)還有蒸汽(qi)壓(ya)(ya)(ya)縮(suo)(suo)式(shi)制冷(leng)(leng)系統。
廣(guang)東劍喬(qiao)試(shi)(shi)(shi)驗(yan)(yan)設備有限公(gong)司是(shi)專注于振(zhen)動及環境試(shi)(shi)(shi)驗(yan)(yan)設備研發、生產(chan)(chan)、銷售大型生產(chan)(chan)廠家(jia),主營產(chan)(chan)品:振(zhen)動臺(tai)、振(zhen)動試(shi)(shi)(shi)驗(yan)(yan)機(ji)、振(zhen)動試(shi)(shi)(shi)驗(yan)(yan)臺(tai)、沖(chong)擊(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)臺(tai)、沖(chong)擊(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)機(ji)、老化房(fang)、恒(heng)(heng)溫(wen)恒(heng)(heng)濕試(shi)(shi)(shi)驗(yan)(yan)室、恒(heng)(heng)溫(wen)恒(heng)(heng)濕機(ji)、快速(su)溫(wen)變試(shi)(shi)(shi)驗(yan)(yan)箱、高低溫(wen)試(shi)(shi)(shi)驗(yan)(yan)箱、冷熱沖(chong)擊(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)箱、冷熱沖(chong)擊(ji)(ji)箱、恒(heng)(heng)溫(wen)恒(heng)(heng)濕箱、恒(heng)(heng)溫(wen)恒(heng)(heng)濕試(shi)(shi)(shi)驗(yan)(yan)箱等產(chan)(chan)品。