冷(leng)熱(re)沖擊試驗(yan)機適用于航空航天(tian)產品(pin)、信息電(dian)(dian)子(zi)儀(yi)器儀(yi)表、材料、電(dian)(dian)工、車輛、金屬、電(dian)(dian)子(zi)產品(pin)、各種電(dian)(dian)子(zi)元氣(qi)件、電(dian)(dian)線、電(dian)(dian)纜等在高低溫(wen)快速交變(bian)(bian)環境(jing)(jing)下(xia)，確(que)定組件、設備和(he)其(qi)他產品(pin)經受(shou)環境(jing)(jing)溫(wen)度迅速變(bian)(bian)化的(de)能力。很(hen)多(duo)人(ren)對冷(leng)熱(re)沖擊試驗(yan)箱不是(shi)很(hen)熟悉(xi)，它的(de)制冷(leng)原理是(shi)什么，今(jin)天(tian)上海(hai)寶試檢測設備有(you)限公(gong)司就來給大家仔細的(de)講講：

     在(zai)(zai)(zai)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)技(ji)術中，制(zhi)(zhi)(zhi)(zhi)取 -20℃ ～ -80℃溫度(du)(du)時，常采(cai)用(yong)(yong)(yong)兩(liang)級壓(ya)縮(suo)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)和復(fu)(fu)疊(die)(die)式制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)兩(liang)種(zhong)方(fang)式。兩(liang)級壓(ya)縮(suo)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)中間壓(ya)力控制(zhi)(zhi)(zhi)(zhi)相對(dui)復(fu)(fu)雜，要求(qiu)工(gong)質(zhi)(zhi)的(de)(de)(de)(de)蒸發(fa)(fa)壓(ya)力低冷(leng)(leng)(leng)(leng)凝(ning)溫度(du)(du)較高，工(gong)質(zhi)(zhi)的(de)(de)(de)(de)選擇范圍(wei)窄(zhai)且多(duo)數達(da)不(bu)(bu)到環(huan)保要求(qiu)，所(suo)以(yi)(yi)兩(liang)級壓(ya)縮(suo)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)在(zai)(zai)(zai)沖擊(ji)試驗(yan)設備上多(duo)不(bu)(bu)被(bei)采(cai)用(yong)(yong)(yong)。復(fu)(fu)疊(die)(die)式制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)可(ke)以(yi)(yi)在(zai)(zai)(zai)夏天工(gong)況實(shi)現-80℃低溫，不(bu)(bu)但可(ke)以(yi)(yi)解決壓(ya)縮(suo)機壓(ya)比過(guo)高問題，而且可(ke)以(yi)(yi)找到滿足環(huan)保要求(qiu)的(de)(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)，所(suo)以(yi)(yi)此種(zhong)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)方(fang)式被(bei)廣泛采(cai)用(yong)(yong)(yong)。在(zai)(zai)(zai)復(fu)(fu)疊(die)(die)式制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)中，根據制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)系(xi)統使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)壓(ya)縮(suo)機數量(liang)和制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)循(xun)環(huan)方(fang)式，又可(ke)以(yi)(yi)分(fen)為二元(yuan)復(fu)(fu)疊(die)(die)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)和自(zi)然復(fu)(fu)疊(die)(die)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)。二元(yuan)復(fu)(fu)疊(die)(die)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)是(shi)將(jiang)(jiang)兩(liang)個(ge)(ge)分(fen)別使(shi)用(yong)(yong)(yong)高、低溫制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)獨立(li)系(xi)統復(fu)(fu)疊(die)(die)在(zai)(zai)(zai)一(yi)(yi)起，將(jiang)(jiang)低溫環(huan)境(jing)的(de)(de)(de)(de)熱量(liang)逐步的(de)(de)(de)(de)釋放給冷(leng)(leng)(leng)(leng)卻介(jie)質(zhi)(zhi)，完(wan)成制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)。自(zi)然復(fu)(fu)疊(die)(die)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)采(cai)用(yong)(yong)(yong)混合工(gong)質(zhi)(zhi)，在(zai)(zai)(zai)一(yi)(yi)個(ge)(ge)系(xi)統內(nei)利用(yong)(yong)(yong)分(fen)凝(ning)原理將(jiang)(jiang)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)分(fen)離，并使(shi)它(ta)們(men)進入各(ge)自(zi)的(de)(de)(de)(de)蒸發(fa)(fa)器蒸發(fa)(fa)制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)，間接實(shi)現復(fu)(fu)疊(die)(die)。該制(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)循(xun)環(huan)只(zhi)使(shi)用(yong)(yong)(yong)一(yi)(yi)臺壓(ya)縮(suo)機，使(shi)系(xi)統的(de)(de)(de)(de)結構(gou)和控制(zhi)(zhi)(zhi)(zhi)大為簡化，將(jiang)(jiang)是(shi)冷(leng)(leng)(leng)(leng)熱沖擊(ji)試驗(yan)箱的(de)(de)(de)(de)一(yi)(yi)個(ge)(ge)重要發(fa)(fa)展方(fang)向。