大連車載空調由(you)壓(ya)(ya)縮(suo)機(ji)、冷(leng)凝(ning)器(qi)、節流(liu)元件(jian)、蒸(zheng)發器(qi)、風機(ji)及必要(yao)(yao)的(de)(de)控制部件(jian)構成(cheng)，用(yong)(yong)于調(diao)(diao)節車(che)內(nei)(nei)溫(wen)(wen)度(du)(du)、濕度(du)(du)，給乘員提供舒適環(huan)境的(de)(de)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系統。當(dang)(dang)壓(ya)(ya)縮(suo)機(ji)工作時(shi)(shi)，壓(ya)(ya)縮(suo)機(ji)吸(xi)入(ru)(ru)從蒸(zheng)發器(qi)出來的(de)(de)低(di)溫(wen)(wen)低(di)壓(ya)(ya)的(de)(de)氣(qi)(qi)(qi)(qi)(qi)態(tai)(tai)制冷(leng)劑(ji)，經壓(ya)(ya)縮(suo)，制冷(leng)劑(ji)的(de)(de)溫(wen)(wen)度(du)(du)和壓(ya)(ya)力升(sheng)高，并(bing)被(bei)送入(ru)(ru)冷(leng)凝(ning)器(qi)。在(zai)冷(leng)凝(ning)器(qi)內(nei)(nei)，高溫(wen)(wen)高壓(ya)(ya)的(de)(de)氣(qi)(qi)(qi)(qi)(qi)態(tai)(tai)制冷(leng)劑(ji)把熱量(liang)傳(chuan)遞給經過冷(leng)凝(ning)器(qi)的(de)(de)車(che)外空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)而(er)液化，變(bian)成(cheng)液體(ti)(ti)。液態(tai)(tai)制冷(leng)劑(ji)流(liu)經節流(liu)裝置時(shi)(shi)，溫(wen)(wen)度(du)(du)和壓(ya)(ya)力降低(di)，并(bing)進入(ru)(ru)蒸(zheng)發器(qi)。在(zai)蒸(zheng)發器(qi)內(nei)(nei)，低(di)溫(wen)(wen)低(di)壓(ya)(ya)的(de)(de)液態(tai)(tai)制冷(leng)劑(ji)吸(xi)收經過蒸(zheng)發器(qi)的(de)(de)車(che)內(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)熱量(liang)而(er)蒸(zheng)發，變(bian)成(cheng)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)。氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)又被(bei)壓(ya)(ya)縮(suo)機(ji)吸(xi)入(ru)(ru)進行下一(yi)輪循(xun)(xun)(xun)(xun)環(huan)。這(zhe)樣，通(tong)過制冷(leng)劑(ji)在(zai)系統內(nei)(nei)的(de)(de)循(xun)(xun)(xun)(xun)環(huan)，不(bu)斷吸(xi)收車(che)內(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)熱量(liang)并(bing)排到車(che)外空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)中，使(shi)(shi)車(che)內(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)溫(wen)(wen)度(du)(du)逐漸(jian)下降。內(nei)(nei)循(xun)(xun)(xun)(xun)環(huan)可(ke)以提高空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)，相當(dang)(dang)于把室內(nei)(nei)冷(leng)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)再制冷(leng)，空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)當(dang)(dang)然更好(hao)了。不(bu)過長時(shi)(shi)間使(shi)(shi)用(yong)(yong)內(nei)(nei)循(xun)(xun)(xun)(xun)環(huan)會使(shi)(shi)車(che)內(nei)(nei)的(de)(de)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質(zhi)(zhi)量(liang)降低(di)，可(ke)能讓人感(gan)覺頭昏腦漲。應當(dang)(dang)開一(yi)會兒內(nei)(nei)循(xun)(xun)(xun)(xun)環(huan)就使(shi)(shi)用(yong)(yong)幾分鐘外循(xun)(xun)(xun)(xun)環(huan)，讓新鮮空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)進入(ru)(ru)車(che)內(nei)(nei)，改善空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質(zhi)(zhi)量(liang)。如果(guo)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)內(nei)(nei)外循(xun)(xun)(xun)(xun)環(huan)開關是機(ji)械式的(de)(de)撥桿而(er)非(fei)按鈕，可(ke)以把撥桿放在(zai)內(nei)(nei)外循(xun)(xun)(xun)(xun)環(huan)的(de)(de)中間，讓車(che)外空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)適量(liang)進入(ru)(ru)，既能提升(sheng)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質(zhi)(zhi)量(liang)，又能提高空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)。此外，在(zai)使(shi)(shi)用(yong)(yong)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)除霜(shuang)除霧時(shi)(shi)，要(yao)(yao)使(shi)(shi)用(yong)(yong)外循(xun)(xun)(xun)(xun)環(huan)才有(you)效。