大連車載空調由壓(ya)(ya)縮(suo)機、冷(leng)凝(ning)(ning)器(qi)(qi)(qi)(qi)、節(jie)流(liu)(liu)元件、蒸(zheng)(zheng)(zheng)發器(qi)(qi)(qi)(qi)、風機及必要的(de)(de)(de)(de)控(kong)制(zhi)(zhi)部件構成(cheng)，用(yong)于調(diao)(diao)節(jie)車(che)(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)溫度(du)、濕度(du)，給(gei)乘員提供舒適環(huan)境的(de)(de)(de)(de)空(kong)(kong)(kong)(kong)調(diao)(diao)系統。當(dang)壓(ya)(ya)縮(suo)機工作時(shi)，壓(ya)(ya)縮(suo)機吸(xi)入(ru)從蒸(zheng)(zheng)(zheng)發器(qi)(qi)(qi)(qi)出來的(de)(de)(de)(de)低溫低壓(ya)(ya)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)態制(zhi)(zhi)冷(leng)劑(ji)，經壓(ya)(ya)縮(suo)，制(zhi)(zhi)冷(leng)劑(ji)的(de)(de)(de)(de)溫度(du)和壓(ya)(ya)力(li)升(sheng)高，并被送入(ru)冷(leng)凝(ning)(ning)器(qi)(qi)(qi)(qi)。在冷(leng)凝(ning)(ning)器(qi)(qi)(qi)(qi)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)，高溫高壓(ya)(ya)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)態制(zhi)(zhi)冷(leng)劑(ji)把(ba)熱量傳(chuan)遞給(gei)經過(guo)冷(leng)凝(ning)(ning)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)車(che)(che)(che)(che)外空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)而(er)液化，變(bian)成(cheng)液體(ti)(ti)。液態制(zhi)(zhi)冷(leng)劑(ji)流(liu)(liu)經節(jie)流(liu)(liu)裝置(zhi)時(shi)，溫度(du)和壓(ya)(ya)力(li)降低，并進(jin)(jin)入(ru)蒸(zheng)(zheng)(zheng)發器(qi)(qi)(qi)(qi)。在蒸(zheng)(zheng)(zheng)發器(qi)(qi)(qi)(qi)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)，低溫低壓(ya)(ya)的(de)(de)(de)(de)液態制(zhi)(zhi)冷(leng)劑(ji)吸(xi)收(shou)經過(guo)蒸(zheng)(zheng)(zheng)發器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)車(che)(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)熱量而(er)蒸(zheng)(zheng)(zheng)發，變(bian)成(cheng)氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)。氣(qi)(qi)(qi)(qi)(qi)體(ti)(ti)又被壓(ya)(ya)縮(suo)機吸(xi)入(ru)進(jin)(jin)行(xing)下一(yi)輪循(xun)(xun)(xun)環(huan)。這(zhe)樣，通(tong)過(guo)制(zhi)(zhi)冷(leng)劑(ji)在系統內(nei)(nei)(nei)(nei)(nei)(nei)(nei)的(de)(de)(de)(de)循(xun)(xun)(xun)環(huan)，不斷吸(xi)收(shou)車(che)(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)熱量并排到車(che)(che)(che)(che)外空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)中，使(shi)車(che)(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)溫度(du)逐漸下降。內(nei)(nei)(nei)(nei)(nei)(nei)(nei)循(xun)(xun)(xun)環(huan)可以(yi)提高空(kong)(kong)(kong)(kong)調(diao)(diao)效(xiao)(xiao)果(guo)(guo)，相(xiang)當(dang)于把(ba)室(shi)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)冷(leng)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)再制(zhi)(zhi)冷(leng)，空(kong)(kong)(kong)(kong)調(diao)(diao)效(xiao)(xiao)果(guo)(guo)當(dang)然(ran)更好了。不過(guo)長時(shi)間(jian)使(shi)用(yong)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)循(xun)(xun)(xun)環(huan)會使(shi)車(che)(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)的(de)(de)(de)(de)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質量降低，可能(neng)(neng)讓(rang)人(ren)感覺頭昏腦(nao)漲。應當(dang)開(kai)一(yi)會兒(er)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)循(xun)(xun)(xun)環(huan)就(jiu)使(shi)用(yong)幾分鐘外循(xun)(xun)(xun)環(huan)，讓(rang)新鮮空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)進(jin)(jin)入(ru)車(che)(che)(che)(che)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)，改(gai)善(shan)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質量。如果(guo)(guo)空(kong)(kong)(kong)(kong)調(diao)(diao)內(nei)(nei)(nei)(nei)(nei)(nei)(nei)外循(xun)(xun)(xun)環(huan)開(kai)關是機械式的(de)(de)(de)(de)撥桿(gan)而(er)非按鈕，可以(yi)把(ba)撥桿(gan)放(fang)在內(nei)(nei)(nei)(nei)(nei)(nei)(nei)外循(xun)(xun)(xun)環(huan)的(de)(de)(de)(de)中間(jian)，讓(rang)車(che)(che)(che)(che)外空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)適量進(jin)(jin)入(ru)，既能(neng)(neng)提升(sheng)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質量，又能(neng)(neng)提高空(kong)(kong)(kong)(kong)調(diao)(diao)效(xiao)(xiao)果(guo)(guo)。此外，在使(shi)用(yong)空(kong)(kong)(kong)(kong)調(diao)(diao)除霜除霧時(shi)，要使(shi)用(yong)外循(xun)(xun)(xun)環(huan)才有效(xiao)(xiao)。