降溫(wen)(wen)是(shi)恒(heng)溫(wen)(wen)恒(heng)濕箱的重要環節,是(shi)斷定一臺(tai)恒(heng)溫(wen)(wen)恒(heng)濕試(shi)驗(yan)箱功能好壞重要參數,它(ta)包含壓(ya)(ya)縮(suo)機、冷凝器、節省設備、蒸發器四大構成(cheng)。壓(ya)(ya)縮(suo)機是(shi)制(zhi)冷體(ti)系心(xin)臟,它(ta)吸進低(di)溫(wen)(wen)低(di)壓(ya)(ya)氣體(ti),變成(cheng)高(gao)溫(wen)(wen)高(gao)壓(ya)(ya)氣體(ti),經(jing)(jing)過(guo)冷凝成(cheng)液體(ti)放出熱(re)量(liang)(liang),經(jing)(jing)過(guo)風(feng)機帶(dai)走熱(re)量(liang)(liang),然(ran)后(hou)經(jing)(jing)過(guo)節省到(dao)為低(di)壓(ya)(ya)液體(ti),其次經(jing)(jing)過(guo)蒸發器變成(cheng)低(di)溫(wen)(wen)低(di)壓(ya)(ya)氣體(ti)最終回到(dao)壓(ya)(ya)縮(suo)機;制(zhi)冷劑在蒸發器中吸收熱(re)量(liang)(liang)完結氣化(hua)進程然(ran)后(hou)吸收熱(re)量(liang)(liang),到(dao)達制(zhi)冷意圖,完結試(shi)驗(yan)箱降溫(wen)(wen)進程。
假(jia)如溫度就很難降(jiang)下來,最有(you)也許即是制冷劑走漏(lou),那么該(gai)怎么查漏(lou)呢!
對恒溫恒濕試驗箱的制冷(leng)體(ti)系進行查漏(lou)(lou),用(yong)檢(jian)漏(lou)(lou)儀和肥皂水相(xiang)結(jie)合的辦法來查看漏(lou)(lou)點在哪,假如發現是熱氣旁通電磁閥(fa)的閥(fa)桿(gan)裂了有細縫(feng),則替換此電磁閥(fa),如發現其它地(di)方的走漏(lou)(lou),則用(yong)氧焊(han)將(jiang)走漏(lou)(lou)處補焊(han)完好,再對體(ti)系重新充氟,體(ti)系運轉即可康復正常。
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