大連車載空調由壓(ya)縮(suo)(suo)機、冷(leng)(leng)凝(ning)器(qi)(qi)(qi)、節流元(yuan)件、蒸(zheng)(zheng)(zheng)發(fa)器(qi)(qi)(qi)、風機及必(bi)要(yao)的(de)(de)控制(zhi)(zhi)部件構(gou)成，用(yong)(yong)于調(diao)節車(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)溫(wen)(wen)度(du)(du)、濕度(du)(du)，給(gei)乘員提(ti)供舒適環(huan)(huan)境的(de)(de)空(kong)(kong)調(diao)系統。當(dang)壓(ya)縮(suo)(suo)機工作(zuo)時(shi)(shi)，壓(ya)縮(suo)(suo)機吸入(ru)從蒸(zheng)(zheng)(zheng)發(fa)器(qi)(qi)(qi)出(chu)來的(de)(de)低(di)(di)溫(wen)(wen)低(di)(di)壓(ya)的(de)(de)氣(qi)(qi)(qi)(qi)態(tai)(tai)制(zhi)(zhi)冷(leng)(leng)劑(ji)，經壓(ya)縮(suo)(suo)，制(zhi)(zhi)冷(leng)(leng)劑(ji)的(de)(de)溫(wen)(wen)度(du)(du)和壓(ya)力升高(gao)，并被(bei)送入(ru)冷(leng)(leng)凝(ning)器(qi)(qi)(qi)。在(zai)(zai)冷(leng)(leng)凝(ning)器(qi)(qi)(qi)內(nei)(nei)(nei)(nei)(nei)，高(gao)溫(wen)(wen)高(gao)壓(ya)的(de)(de)氣(qi)(qi)(qi)(qi)態(tai)(tai)制(zhi)(zhi)冷(leng)(leng)劑(ji)把熱量傳遞給(gei)經過(guo)(guo)冷(leng)(leng)凝(ning)器(qi)(qi)(qi)的(de)(de)車(che)(che)(che)外(wai)(wai)(wai)空(kong)(kong)氣(qi)(qi)(qi)(qi)而液化，變成液體。液態(tai)(tai)制(zhi)(zhi)冷(leng)(leng)劑(ji)流經節流裝置時(shi)(shi)，溫(wen)(wen)度(du)(du)和壓(ya)力降(jiang)(jiang)低(di)(di)，并進(jin)入(ru)蒸(zheng)(zheng)(zheng)發(fa)器(qi)(qi)(qi)。在(zai)(zai)蒸(zheng)(zheng)(zheng)發(fa)器(qi)(qi)(qi)內(nei)(nei)(nei)(nei)(nei)，低(di)(di)溫(wen)(wen)低(di)(di)壓(ya)的(de)(de)液態(tai)(tai)制(zhi)(zhi)冷(leng)(leng)劑(ji)吸收經過(guo)(guo)蒸(zheng)(zheng)(zheng)發(fa)器(qi)(qi)(qi)的(de)(de)車(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)空(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)熱量而蒸(zheng)(zheng)(zheng)發(fa)，變成氣(qi)(qi)(qi)(qi)體。氣(qi)(qi)(qi)(qi)體又(you)被(bei)壓(ya)縮(suo)(suo)機吸入(ru)進(jin)行下一輪(lun)循(xun)(xun)環(huan)(huan)。這樣，通過(guo)(guo)制(zhi)(zhi)冷(leng)(leng)劑(ji)在(zai)(zai)系統內(nei)(nei)(nei)(nei)(nei)的(de)(de)循(xun)(xun)環(huan)(huan)，不斷(duan)吸收車(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)空(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)熱量并排到(dao)車(che)(che)(che)外(wai)(wai)(wai)空(kong)(kong)氣(qi)(qi)(qi)(qi)中，使(shi)(shi)車(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)空(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)溫(wen)(wen)度(du)(du)逐漸下降(jiang)(jiang)。內(nei)(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)可(ke)以提(ti)高(gao)空(kong)(kong)調(diao)效(xiao)果，相當(dang)于把室內(nei)(nei)(nei)(nei)(nei)冷(leng)(leng)空(kong)(kong)氣(qi)(qi)(qi)(qi)再制(zhi)(zhi)冷(leng)(leng)，空(kong)(kong)調(diao)效(xiao)果當(dang)然更好了。不過(guo)(guo)長時(shi)(shi)間使(shi)(shi)用(yong)(yong)內(nei)(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)會(hui)使(shi)(shi)車(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)的(de)(de)空(kong)(kong)氣(qi)(qi)(qi)(qi)質(zhi)量降(jiang)(jiang)低(di)(di)，可(ke)能讓人(ren)感覺頭昏腦漲。應當(dang)開一會(hui)兒(er)內(nei)(nei)(nei)(nei)(nei)循(xun)(xun)環(huan)(huan)就使(shi)(shi)用(yong)(yong)幾分鐘外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)，讓新(xin)鮮空(kong)(kong)氣(qi)(qi)(qi)(qi)進(jin)入(ru)車(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)，改善空(kong)(kong)氣(qi)(qi)(qi)(qi)質(zhi)量。如(ru)果空(kong)(kong)調(diao)內(nei)(nei)(nei)(nei)(nei)外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)開關是機械(xie)式的(de)(de)撥(bo)桿而非按鈕，可(ke)以把撥(bo)桿放在(zai)(zai)內(nei)(nei)(nei)(nei)(nei)外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)的(de)(de)中間，讓車(che)(che)(che)外(wai)(wai)(wai)空(kong)(kong)氣(qi)(qi)(qi)(qi)適量進(jin)入(ru)，既能提(ti)升空(kong)(kong)氣(qi)(qi)(qi)(qi)質(zhi)量，又(you)能提(ti)高(gao)空(kong)(kong)調(diao)效(xiao)果。此外(wai)(wai)(wai)，在(zai)(zai)使(shi)(shi)用(yong)(yong)空(kong)(kong)調(diao)除(chu)霜(shuang)除(chu)霧(wu)時(shi)(shi)，要(yao)使(shi)(shi)用(yong)(yong)外(wai)(wai)(wai)循(xun)(xun)環(huan)(huan)才有效(xiao)。