車載空調裝配工作時，壓縮機吸入從蒸發器出來的低溫低壓的氣態制冷劑，經壓縮，制冷劑的溫度和壓力升高，并被送入冷凝器。在冷凝器內，高溫高壓的氣態制冷劑把熱量傳遞給經過冷凝器的車外空氣而液化，變成液體。液態制冷劑流經節流裝置時，溫度和壓力降低，并進入蒸發器。車載空調由壓(ya)縮(suo)機、冷凝器、節流元件、蒸發(fa)器、風機及必要的(de)控(kong)制部(bu)件構成，用于調(diao)(diao)節車內(nei)溫(wen)度(du)、濕度(du)，給乘員(yuan)提(ti)供舒適(shi)環(huan)境(jing)的(de)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系統。在蒸發(fa)器內(nei)，低溫(wen)低壓(ya)的(de)液(ye)態制冷劑吸(xi)收經過蒸發(fa)器的(de)車內(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)熱(re)量而蒸發(fa)，變(bian)成氣(qi)(qi)體(ti)。氣(qi)(qi)體(ti)又被壓(ya)縮(suo)機吸(xi)入(ru)進行下一(yi)輪循環(huan)。這樣，通過制冷劑在系統內(nei)的(de)循環(huan)，不斷吸(xi)收車內(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)熱(re)量并排到(dao)車外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)中，使(shi)(shi)車內(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)溫(wen)度(du)逐漸下降(jiang)。室外(wai)暴曬之下的(de)汽車，車內(nei)溫(wen)度(du)可達50℃。每(mei)次剛剛上車，車主都(dou)是(shi)備受煎熬。即(ji)使(shi)(shi)打(da)開空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)，光靠(kao)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)把50℃的(de)熱(re)氣(qi)(qi)變(bian)冷，可有點困難。你只能(neng)感覺到(dao)出(chu)風口一(yi)絲涼(liang)意，緊(jin)靠(kao)坐(zuo)椅的(de)臀(tun)部(bu)背部(bu)依然酷熱(re)難耐。每(mei)隔(ge)一(yi)段時(shi)間(jian)，需將(jiang)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)開到(dao)最大檔，約(yue)10分鐘左右即(ji)可有效杜絕灰塵積聚(ju)。或者在洗(xi)車時(shi)順便清洗(xi)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)濾網(wang)，如有可能(neng)，適(shi)當使(shi)(shi)用空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)清洗(xi)劑也是(shi)有幫助的(de)。