大連車載空調由壓(ya)(ya)縮(suo)機(ji)(ji)(ji)、冷(leng)(leng)凝(ning)(ning)器(qi)(qi)、節(jie)(jie)流(liu)元件(jian)、蒸(zheng)(zheng)發器(qi)(qi)、風機(ji)(ji)(ji)及必要的(de)控(kong)制部件(jian)構成(cheng)(cheng)(cheng)，用(yong)(yong)于調(diao)(diao)節(jie)(jie)車(che)內(nei)(nei)(nei)(nei)溫度、濕(shi)度，給(gei)乘員提(ti)(ti)(ti)供舒適環(huan)(huan)境的(de)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系統(tong)。當壓(ya)(ya)縮(suo)機(ji)(ji)(ji)工(gong)作時(shi)，壓(ya)(ya)縮(suo)機(ji)(ji)(ji)吸入(ru)從蒸(zheng)(zheng)發器(qi)(qi)出來的(de)低(di)溫低(di)壓(ya)(ya)的(de)氣(qi)(qi)(qi)態制冷(leng)(leng)劑(ji)(ji)，經壓(ya)(ya)縮(suo)，制冷(leng)(leng)劑(ji)(ji)的(de)溫度和壓(ya)(ya)力(li)升高(gao)(gao)(gao)(gao)，并(bing)被(bei)(bei)送入(ru)冷(leng)(leng)凝(ning)(ning)器(qi)(qi)。在(zai)冷(leng)(leng)凝(ning)(ning)器(qi)(qi)內(nei)(nei)(nei)(nei)，高(gao)(gao)(gao)(gao)溫高(gao)(gao)(gao)(gao)壓(ya)(ya)的(de)氣(qi)(qi)(qi)態制冷(leng)(leng)劑(ji)(ji)把熱量傳遞給(gei)經過(guo)冷(leng)(leng)凝(ning)(ning)器(qi)(qi)的(de)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)而(er)液(ye)(ye)(ye)化(hua)，變(bian)成(cheng)(cheng)(cheng)液(ye)(ye)(ye)體。液(ye)(ye)(ye)態制冷(leng)(leng)劑(ji)(ji)流(liu)經節(jie)(jie)流(liu)裝(zhuang)置時(shi)，溫度和壓(ya)(ya)力(li)降低(di)，并(bing)進(jin)(jin)入(ru)蒸(zheng)(zheng)發器(qi)(qi)。在(zai)蒸(zheng)(zheng)發器(qi)(qi)內(nei)(nei)(nei)(nei)，低(di)溫低(di)壓(ya)(ya)的(de)液(ye)(ye)(ye)態制冷(leng)(leng)劑(ji)(ji)吸收經過(guo)蒸(zheng)(zheng)發器(qi)(qi)的(de)車(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)的(de)熱量而(er)蒸(zheng)(zheng)發，變(bian)成(cheng)(cheng)(cheng)氣(qi)(qi)(qi)體。氣(qi)(qi)(qi)體又被(bei)(bei)壓(ya)(ya)縮(suo)機(ji)(ji)(ji)吸入(ru)進(jin)(jin)行下一輪循(xun)(xun)環(huan)(huan)。這(zhe)樣，通(tong)過(guo)制冷(leng)(leng)劑(ji)(ji)在(zai)系統(tong)內(nei)(nei)(nei)(nei)的(de)循(xun)(xun)環(huan)(huan)，不(bu)斷(duan)吸收車(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)的(de)熱量并(bing)排到車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)中(zhong)，使(shi)(shi)車(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)的(de)溫度逐漸下降。內(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)可以(yi)提(ti)(ti)(ti)高(gao)(gao)(gao)(gao)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效(xiao)(xiao)果(guo)(guo)(guo)，相當于把室內(nei)(nei)(nei)(nei)冷(leng)(leng)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)再制冷(leng)(leng)，空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效(xiao)(xiao)果(guo)(guo)(guo)當然(ran)更好了。不(bu)過(guo)長時(shi)間使(shi)(shi)用(yong)(yong)內(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)會使(shi)(shi)車(che)內(nei)(nei)(nei)(nei)的(de)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)質(zhi)(zhi)量降低(di)，可能讓(rang)(rang)人感(gan)覺頭昏(hun)腦漲。應當開(kai)一會兒內(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)就使(shi)(shi)用(yong)(yong)幾(ji)分鐘外(wai)循(xun)(xun)環(huan)(huan)，讓(rang)(rang)新鮮空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)進(jin)(jin)入(ru)車(che)內(nei)(nei)(nei)(nei)，改善空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)質(zhi)(zhi)量。如果(guo)(guo)(guo)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)內(nei)(nei)(nei)(nei)外(wai)循(xun)(xun)環(huan)(huan)開(kai)關(guan)是(shi)機(ji)(ji)(ji)械式的(de)撥桿(gan)而(er)非按鈕，可以(yi)把撥桿(gan)放在(zai)內(nei)(nei)(nei)(nei)外(wai)循(xun)(xun)環(huan)(huan)的(de)中(zhong)間，讓(rang)(rang)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)適量進(jin)(jin)入(ru)，既能提(ti)(ti)(ti)升空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)質(zhi)(zhi)量，又能提(ti)(ti)(ti)高(gao)(gao)(gao)(gao)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效(xiao)(xiao)果(guo)(guo)(guo)。此外(wai)，在(zai)使(shi)(shi)用(yong)(yong)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)除霜除霧(wu)時(shi)，要使(shi)(shi)用(yong)(yong)外(wai)循(xun)(xun)環(huan)(huan)才有效(xiao)(xiao)。