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。車載空調由壓縮機、冷(leng)(leng)凝器、節(jie)流元件、蒸發器、風機及必要的(de)(de)控(kong)制(zhi)部(bu)(bu)件構成，用(yong)于調(diao)節(jie)車(che)(che)內(nei)(nei)溫度(du)、濕度(du)，給乘員(yuan)提供舒適環境的(de)(de)空(kong)(kong)(kong)(kong)(kong)調(diao)系(xi)統。在(zai)蒸發器內(nei)(nei)，低溫低壓的(de)(de)液態制(zhi)冷(leng)(leng)劑吸(xi)收(shou)經過(guo)蒸發器的(de)(de)車(che)(che)內(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)(de)熱量而(er)蒸發，變(bian)成氣(qi)(qi)體。氣(qi)(qi)體又被壓縮機吸(xi)入進行下一輪循環。這樣，通過(guo)制(zhi)冷(leng)(leng)劑在(zai)系(xi)統內(nei)(nei)的(de)(de)循環，不斷吸(xi)收(shou)車(che)(che)內(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)(de)熱量并排到(dao)車(che)(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)中(zhong)，使車(che)(che)內(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)(de)溫度(du)逐漸(jian)下降。室外(wai)暴曬之下的(de)(de)汽車(che)(che)，車(che)(che)內(nei)(nei)溫度(du)可(ke)達50℃。每次(ci)剛剛上車(che)(che)，車(che)(che)主都(dou)是(shi)備受(shou)煎熬。即使打開空(kong)(kong)(kong)(kong)(kong)調(diao)，光靠空(kong)(kong)(kong)(kong)(kong)調(diao)把(ba)50℃的(de)(de)熱氣(qi)(qi)變(bian)冷(leng)(leng)，可(ke)有點困難。你只能感覺到(dao)出風口一絲涼意，緊(jin)靠坐(zuo)椅的(de)(de)臀部(bu)(bu)背(bei)部(bu)(bu)依然酷熱難耐。每隔(ge)一段時(shi)間，需將空(kong)(kong)(kong)(kong)(kong)調(diao)開到(dao)最大檔，約10分鐘左右即可(ke)有效杜絕灰塵(chen)積聚。或(huo)者在(zai)洗車(che)(che)時(shi)順便(bian)清洗空(kong)(kong)(kong)(kong)(kong)調(diao)濾網，如有可(ke)能，適當(dang)使用(yong)空(kong)(kong)(kong)(kong)(kong)調(diao)清洗劑也是(shi)有幫(bang)助的(de)(de)。