大連車載空調由壓(ya)縮(suo)機、冷(leng)(leng)凝器(qi)(qi)(qi)、節(jie)流元(yuan)件(jian)、蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)、風(feng)機及必(bi)要(yao)的(de)(de)控制(zhi)(zhi)(zhi)部(bu)件(jian)構成，用(yong)于調節(jie)車(che)內(nei)(nei)(nei)溫度(du)、濕度(du)，給乘員提(ti)(ti)供舒(shu)適環(huan)(huan)(huan)境(jing)的(de)(de)空(kong)(kong)(kong)(kong)(kong)(kong)調系統(tong)。當(dang)(dang)(dang)壓(ya)縮(suo)機工作時(shi)，壓(ya)縮(suo)機吸(xi)入(ru)從(cong)蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)出來的(de)(de)低(di)溫低(di)壓(ya)的(de)(de)氣(qi)(qi)(qi)(qi)態制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)，經(jing)(jing)壓(ya)縮(suo)，制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)的(de)(de)溫度(du)和(he)壓(ya)力升(sheng)高(gao)(gao)，并(bing)被送入(ru)冷(leng)(leng)凝器(qi)(qi)(qi)。在(zai)(zai)冷(leng)(leng)凝器(qi)(qi)(qi)內(nei)(nei)(nei)，高(gao)(gao)溫高(gao)(gao)壓(ya)的(de)(de)氣(qi)(qi)(qi)(qi)態制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)把熱(re)量(liang)傳遞(di)給經(jing)(jing)過冷(leng)(leng)凝器(qi)(qi)(qi)的(de)(de)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)而(er)(er)液(ye)化，變成液(ye)體。液(ye)態制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)流經(jing)(jing)節(jie)流裝(zhuang)置時(shi)，溫度(du)和(he)壓(ya)力降低(di)，并(bing)進(jin)(jin)入(ru)蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)。在(zai)(zai)蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)內(nei)(nei)(nei)，低(di)溫低(di)壓(ya)的(de)(de)液(ye)態制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)吸(xi)收經(jing)(jing)過蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)的(de)(de)車(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)熱(re)量(liang)而(er)(er)蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)，變成氣(qi)(qi)(qi)(qi)體。氣(qi)(qi)(qi)(qi)體又(you)被壓(ya)縮(suo)機吸(xi)入(ru)進(jin)(jin)行下(xia)一(yi)輪循(xun)(xun)環(huan)(huan)(huan)。這樣，通過制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)在(zai)(zai)系統(tong)內(nei)(nei)(nei)的(de)(de)循(xun)(xun)環(huan)(huan)(huan)，不(bu)(bu)斷(duan)吸(xi)收車(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)熱(re)量(liang)并(bing)排(pai)到(dao)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)中(zhong)，使(shi)(shi)車(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)溫度(du)逐漸下(xia)降。內(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)(huan)可以(yi)提(ti)(ti)高(gao)(gao)空(kong)(kong)(kong)(kong)(kong)(kong)調效(xiao)果(guo)，相當(dang)(dang)(dang)于把室(shi)內(nei)(nei)(nei)冷(leng)(leng)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)再制(zhi)(zhi)(zhi)冷(leng)(leng)，空(kong)(kong)(kong)(kong)(kong)(kong)調效(xiao)果(guo)當(dang)(dang)(dang)然更(geng)好(hao)了(le)。不(bu)(bu)過長時(shi)間使(shi)(shi)用(yong)內(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)(huan)會(hui)使(shi)(shi)車(che)內(nei)(nei)(nei)的(de)(de)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質量(liang)降低(di)，可能(neng)讓(rang)人感(gan)覺頭昏腦漲。應當(dang)(dang)(dang)開一(yi)會(hui)兒內(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)(huan)就使(shi)(shi)用(yong)幾分鐘(zhong)外(wai)循(xun)(xun)環(huan)(huan)(huan)，讓(rang)新鮮空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)進(jin)(jin)入(ru)車(che)內(nei)(nei)(nei)，改善空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質量(liang)。如果(guo)空(kong)(kong)(kong)(kong)(kong)(kong)調內(nei)(nei)(nei)外(wai)循(xun)(xun)環(huan)(huan)(huan)開關是機械式的(de)(de)撥桿而(er)(er)非按鈕，可以(yi)把撥桿放在(zai)(zai)內(nei)(nei)(nei)外(wai)循(xun)(xun)環(huan)(huan)(huan)的(de)(de)中(zhong)間，讓(rang)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)適量(liang)進(jin)(jin)入(ru)，既能(neng)提(ti)(ti)升(sheng)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質量(liang)，又(you)能(neng)提(ti)(ti)高(gao)(gao)空(kong)(kong)(kong)(kong)(kong)(kong)調效(xiao)果(guo)。此外(wai)，在(zai)(zai)使(shi)(shi)用(yong)空(kong)(kong)(kong)(kong)(kong)(kong)調除(chu)霜除(chu)霧時(shi)，要(yao)使(shi)(shi)用(yong)外(wai)循(xun)(xun)環(huan)(huan)(huan)才有效(xiao)。