大連車載空調由壓(ya)(ya)縮(suo)機(ji)(ji)、冷(leng)(leng)(leng)(leng)(leng)凝(ning)(ning)器、節流元件、蒸(zheng)(zheng)發(fa)(fa)(fa)器、風機(ji)(ji)及必要的(de)(de)控制(zhi)(zhi)部件構成，用(yong)(yong)于調(diao)(diao)(diao)節車(che)(che)內(nei)(nei)(nei)(nei)溫度(du)、濕度(du)，給乘員提供舒適環(huan)(huan)(huan)(huan)境的(de)(de)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)(diao)系統。當(dang)(dang)壓(ya)(ya)縮(suo)機(ji)(ji)工(gong)作(zuo)時(shi)，壓(ya)(ya)縮(suo)機(ji)(ji)吸(xi)入從蒸(zheng)(zheng)發(fa)(fa)(fa)器出(chu)來的(de)(de)低溫低壓(ya)(ya)的(de)(de)氣(qi)(qi)態(tai)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)(ji)(ji)，經(jing)(jing)壓(ya)(ya)縮(suo)，制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)(ji)(ji)的(de)(de)溫度(du)和壓(ya)(ya)力升高(gao)，并被送入冷(leng)(leng)(leng)(leng)(leng)凝(ning)(ning)器。在(zai)(zai)冷(leng)(leng)(leng)(leng)(leng)凝(ning)(ning)器內(nei)(nei)(nei)(nei)，高(gao)溫高(gao)壓(ya)(ya)的(de)(de)氣(qi)(qi)態(tai)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)(ji)(ji)把(ba)熱量(liang)傳(chuan)遞給經(jing)(jing)過(guo)冷(leng)(leng)(leng)(leng)(leng)凝(ning)(ning)器的(de)(de)車(che)(che)外(wai)(wai)(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)而(er)液化(hua)，變(bian)成液體(ti)。液態(tai)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)(ji)(ji)流經(jing)(jing)節流裝置時(shi)，溫度(du)和壓(ya)(ya)力降低，并進入蒸(zheng)(zheng)發(fa)(fa)(fa)器。在(zai)(zai)蒸(zheng)(zheng)發(fa)(fa)(fa)器內(nei)(nei)(nei)(nei)，低溫低壓(ya)(ya)的(de)(de)液態(tai)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)(ji)(ji)吸(xi)收(shou)經(jing)(jing)過(guo)蒸(zheng)(zheng)發(fa)(fa)(fa)器的(de)(de)車(che)(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)(de)熱量(liang)而(er)蒸(zheng)(zheng)發(fa)(fa)(fa)，變(bian)成氣(qi)(qi)體(ti)。氣(qi)(qi)體(ti)又(you)被壓(ya)(ya)縮(suo)機(ji)(ji)吸(xi)入進行(xing)下一輪(lun)循(xun)(xun)環(huan)(huan)(huan)(huan)。這樣，通過(guo)制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)劑(ji)(ji)(ji)在(zai)(zai)系統內(nei)(nei)(nei)(nei)的(de)(de)循(xun)(xun)環(huan)(huan)(huan)(huan)，不斷吸(xi)收(shou)車(che)(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)(de)熱量(liang)并排到車(che)(che)外(wai)(wai)(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)中(zhong)，使(shi)車(che)(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)的(de)(de)溫度(du)逐漸下降。內(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)(huan)(huan)可(ke)以提高(gao)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)(diao)效果(guo)(guo)，相當(dang)(dang)于把(ba)室(shi)內(nei)(nei)(nei)(nei)冷(leng)(leng)(leng)(leng)(leng)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)再制(zhi)(zhi)冷(leng)(leng)(leng)(leng)(leng)，空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)(diao)效果(guo)(guo)當(dang)(dang)然更(geng)好了。不過(guo)長時(shi)間使(shi)用(yong)(yong)內(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)(huan)(huan)會(hui)使(shi)車(che)(che)內(nei)(nei)(nei)(nei)的(de)(de)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)質(zhi)量(liang)降低，可(ke)能讓人感覺頭昏腦漲。應當(dang)(dang)開一會(hui)兒內(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)(huan)(huan)就使(shi)用(yong)(yong)幾(ji)分鐘外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)(huan)(huan)，讓新鮮空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)進入車(che)(che)內(nei)(nei)(nei)(nei)，改善空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)質(zhi)量(liang)。如果(guo)(guo)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)(diao)內(nei)(nei)(nei)(nei)外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)(huan)(huan)開關是機(ji)(ji)械(xie)式的(de)(de)撥桿而(er)非按(an)鈕，可(ke)以把(ba)撥桿放(fang)在(zai)(zai)內(nei)(nei)(nei)(nei)外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)(huan)(huan)的(de)(de)中(zhong)間，讓車(che)(che)外(wai)(wai)(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)適量(liang)進入，既能提升空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)質(zhi)量(liang)，又(you)能提高(gao)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)(diao)效果(guo)(guo)。此外(wai)(wai)(wai)，在(zai)(zai)使(shi)用(yong)(yong)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)(diao)除(chu)霜除(chu)霧時(shi)，要使(shi)用(yong)(yong)外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)(huan)(huan)才有效。