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恒溫恒濕試驗箱操作系統是如何運作的?

返回列表 來源:劍喬(qiao)儀器 瀏覽: 130 發(fa)布日(ri)期:2018-12-29

  恒溫恒濕試驗箱有五大系(xi)(xi)(xi)統(tong):控制(zhi)系(xi)(xi)(xi)統(tong)、制(zhi)冷系(xi)(xi)(xi)統(tong)、加熱(re)系(xi)(xi)(xi)統(tong)、加濕(shi)系(xi)(xi)(xi)統(tong)和除濕(shi)系(xi)(xi)(xi)統(tong)。今天我們來詳細的來說一(yi)下這(zhe)幾大系(xi)(xi)(xi)統(tong)是如何實現恒溫恒濕(shi)試(shi)驗箱功(gong)能的。

  一、恒(heng)溫(wen)(wen)(wen)(wen)恒(heng)濕(shi)試(shi)驗(yan)箱(xiang)的(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)統(tong)(tong)跟我們家用電冰(bing)箱(xiang)的(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)統(tong)(tong)是(shi)(shi)類似的(de)(de)。開(kai)機(ji)后(hou)設置(zhi)好各溫(wen)(wen)(wen)(wen)、濕(shi)度(du)參(can)數,由控制(zhi)(zhi)系(xi)統(tong)(tong)先檢測(ce)試(shi)驗(yan)箱(xiang)的(de)(de)溫(wen)(wen)(wen)(wen)度(du),如(ru)(ru)果箱(xiang)體內的(de)(de)濕(shi)度(du)高(gao)于系(xi)統(tong)(tong)設置(zhi)溫(wen)(wen)(wen)(wen)度(du),恒(heng)溫(wen)(wen)(wen)(wen)恒(heng)濕(shi)試(shi)驗(yan)箱(xiang)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)統(tong)(tong)啟動,制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)系(xi)統(tong)(tong)一般都是(shi)(shi)機(ji)械制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)輔以液氮制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)。這套系(xi)統(tong)(tong)主(zhu)要由壓(ya)縮機(ji)、冷(leng)(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)、蒸發(fa)器(qi)和節(jie)流(liu)裝置(zhi)四部(bu)份組成(cheng)(cheng)(cheng)。高(gao)壓(ya)液態(tai)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)制(zhi)(zhi)經過(guo)(guo)濾器(qi)后(hou),再經過(guo)(guo)膨脹節(jie)流(liu)閥降(jiang)(jiang)(jiang)壓(ya)流(liu)入(ru)蒸發(fa)器(qi)當中(zhong)。在(zai)(zai)蒸發(fa)器(qi)當中(zhong),制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)劑(ji)通過(guo)(guo)吸(xi)(xi)收(shou)空氣中(zhong)的(de)(de)熱量而(er)蒸發(fa)為(wei)氣體,氣態(tai)的(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)劑(ji)由壓(ya)縮機(ji)吸(xi)(xi)入(ru)后(hou),形成(cheng)(cheng)(cheng)高(gao)溫(wen)(wen)(wen)(wen)高(gao)壓(ya)的(de)(de)氣體進入(ru)風冷(leng)(leng)(leng)(leng)(leng)(leng)冷(leng)(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)當中(zhong),經過(guo)(guo)熱傳導(dao),熱量被(bei)冷(leng)(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)吸(xi)(xi)走,氣態(tai)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)(leng)劑(ji)轉(zhuan)換(huan)成(cheng)(cheng)(cheng)為(wei)高(gao)壓(ya)液體。如(ru)(ru)此(ci)反復循環,實(shi)現(xian)溫(wen)(wen)(wen)(wen)度(du)降(jiang)(jiang)(jiang)低。同時在(zai)(zai)整(zheng)個(ge)試(shi)驗(yan)的(de)(de)過(guo)(guo)程當中(zhong),控制(zhi)(zhi)系(xi)統(tong)(tong)不斷監測(ce)溫(wen)(wen)(wen)(wen)度(du),溫(wen)(wen)(wen)(wen)度(du)達(da)到指(zhi)定溫(wen)(wen)(wen)(wen)度(du)降(jiang)(jiang)(jiang)溫(wen)(wen)(wen)(wen)系(xi)統(tong)(tong)停止工作,如(ru)(ru)果溫(wen)(wen)(wen)(wen)度(du)超(chao)過(guo)(guo)指(zhi)定溫(wen)(wen)(wen)(wen)度(du),降(jiang)(jiang)(jiang)溫(wen)(wen)(wen)(wen)系(xi)統(tong)(tong)就會重復啟動。

  二、恒(heng)(heng)溫恒(heng)(heng)濕試驗(yan)箱(xiang)的(de)制(zhi)熱(re)系統。首先(xian)還(huan)是(shi)由控制(zhi)系統對溫度進行(xing)(xing)檢測。然后再與指(zhi)定溫度進行(xing)(xing)比(bi)對,如果沒有(you)達(da)到指(zhi)定溫度就會(hui)啟動(dong)加(jia)熱(re)系統進行(xing)(xing)工(gong)作(zuo)。恒(heng)(heng)溫恒(heng)(heng)濕試驗(yan)箱(xiang)的(de)加(jia)熱(re)方式是(shi)間接加(jia)熱(re),先(xian)是(shi)啟動(dong)加(jia)熱(re)設備,加(jia)熱(re)設備把空氣溫度升高,然后通過(guo)風(feng)機將熱(re)風(feng)送到試驗(yan)箱(xiang)工(gong)作(zuo)室(shi)當(dang)中。

  三、恒(heng)溫(wen)恒(heng)濕(shi)(shi)試驗箱(xiang)的(de)加濕(shi)(shi)系(xi)(xi)統(tong)。首先試驗箱(xiang)啟動(dong)(dong)控制系(xi)(xi)統(tong),進行(xing)比對。如果濕(shi)(shi)度達不到設定(ding)的(de)標準就(jiu)啟動(dong)(dong)加濕(shi)(shi)系(xi)(xi)統(tong)。試驗箱(xiang)啟動(dong)(dong)電極加濕(shi)(shi)器,將水加熱后(hou)形成(cheng)水蒸氣,再通過風機將蒸汽送(song)到工作室當中,直到達到指定(ding)的(de)濕(shi)(shi)度為止。

  四、恒溫恒濕(shi)試驗箱的除濕(shi)系統。控制系統啟動監(jian)測濕(shi)度(du)水平(ping),如果高于(yu)指(zhi)定濕(shi)度(du)就會啟動除濕(shi)系統,將工作室內(nei)的濕(shi)潤空(kong)氣抽到蒸發(fa)器(qi)當中,經蒸發(fa)器(qi)冷卻(que)到露點(dian)以下,析出(chu)空(kong)氣中的水分,達(da)到除濕(shi)的目的。

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