大連車載空調由壓(ya)(ya)縮機(ji)(ji)(ji)、冷(leng)(leng)凝(ning)器(qi)、節流(liu)(liu)元件(jian)、蒸(zheng)發(fa)器(qi)、風機(ji)(ji)(ji)及必(bi)要的(de)(de)(de)(de)控制(zhi)部(bu)件(jian)構成，用(yong)于(yu)調(diao)節車(che)內(nei)(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)、濕度(du)(du)，給乘員提供舒(shu)適(shi)環(huan)(huan)境的(de)(de)(de)(de)空(kong)(kong)(kong)(kong)調(diao)系(xi)統。當(dang)壓(ya)(ya)縮機(ji)(ji)(ji)工(gong)作時，壓(ya)(ya)縮機(ji)(ji)(ji)吸(xi)入(ru)從蒸(zheng)發(fa)器(qi)出來的(de)(de)(de)(de)低(di)溫(wen)(wen)(wen)(wen)低(di)壓(ya)(ya)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)態(tai)(tai)制(zhi)冷(leng)(leng)劑(ji)，經壓(ya)(ya)縮，制(zhi)冷(leng)(leng)劑(ji)的(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)和壓(ya)(ya)力(li)升高(gao)(gao)，并被送(song)入(ru)冷(leng)(leng)凝(ning)器(qi)。在(zai)冷(leng)(leng)凝(ning)器(qi)內(nei)(nei)(nei)，高(gao)(gao)溫(wen)(wen)(wen)(wen)高(gao)(gao)壓(ya)(ya)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)態(tai)(tai)制(zhi)冷(leng)(leng)劑(ji)把熱量(liang)(liang)傳遞給經過(guo)冷(leng)(leng)凝(ning)器(qi)的(de)(de)(de)(de)車(che)外(wai)(wai)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)而液化，變(bian)成液體。液態(tai)(tai)制(zhi)冷(leng)(leng)劑(ji)流(liu)(liu)經節流(liu)(liu)裝置時，溫(wen)(wen)(wen)(wen)度(du)(du)和壓(ya)(ya)力(li)降低(di)，并進(jin)(jin)入(ru)蒸(zheng)發(fa)器(qi)。在(zai)蒸(zheng)發(fa)器(qi)內(nei)(nei)(nei)，低(di)溫(wen)(wen)(wen)(wen)低(di)壓(ya)(ya)的(de)(de)(de)(de)液態(tai)(tai)制(zhi)冷(leng)(leng)劑(ji)吸(xi)收經過(guo)蒸(zheng)發(fa)器(qi)的(de)(de)(de)(de)車(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)熱量(liang)(liang)而蒸(zheng)發(fa)，變(bian)成氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體。氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)體又被壓(ya)(ya)縮機(ji)(ji)(ji)吸(xi)入(ru)進(jin)(jin)行下一(yi)輪循(xun)(xun)(xun)(xun)環(huan)(huan)。這樣，通(tong)過(guo)制(zhi)冷(leng)(leng)劑(ji)在(zai)系(xi)統內(nei)(nei)(nei)的(de)(de)(de)(de)循(xun)(xun)(xun)(xun)環(huan)(huan)，不斷吸(xi)收車(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)熱量(liang)(liang)并排到車(che)外(wai)(wai)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)中(zhong)，使車(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)逐漸下降。內(nei)(nei)(nei)循(xun)(xun)(xun)(xun)環(huan)(huan)可以(yi)提高(gao)(gao)空(kong)(kong)(kong)(kong)調(diao)效果(guo)，相當(dang)于(yu)把室內(nei)(nei)(nei)冷(leng)(leng)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)再制(zhi)冷(leng)(leng)，空(kong)(kong)(kong)(kong)調(diao)效果(guo)當(dang)然更(geng)好了。不過(guo)長時間使用(yong)內(nei)(nei)(nei)循(xun)(xun)(xun)(xun)環(huan)(huan)會(hui)使車(che)內(nei)(nei)(nei)的(de)(de)(de)(de)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)質量(liang)(liang)降低(di)，可能讓人(ren)感覺頭昏(hun)腦漲。應(ying)當(dang)開一(yi)會(hui)兒內(nei)(nei)(nei)循(xun)(xun)(xun)(xun)環(huan)(huan)就使用(yong)幾分鐘外(wai)(wai)循(xun)(xun)(xun)(xun)環(huan)(huan)，讓新鮮空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)進(jin)(jin)入(ru)車(che)內(nei)(nei)(nei)，改(gai)善(shan)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)質量(liang)(liang)。如果(guo)空(kong)(kong)(kong)(kong)調(diao)內(nei)(nei)(nei)外(wai)(wai)循(xun)(xun)(xun)(xun)環(huan)(huan)開關是機(ji)(ji)(ji)械(xie)式(shi)的(de)(de)(de)(de)撥(bo)桿而非按鈕(niu)，可以(yi)把撥(bo)桿放在(zai)內(nei)(nei)(nei)外(wai)(wai)循(xun)(xun)(xun)(xun)環(huan)(huan)的(de)(de)(de)(de)中(zhong)間，讓車(che)外(wai)(wai)空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)適(shi)量(liang)(liang)進(jin)(jin)入(ru)，既能提升空(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)質量(liang)(liang)，又能提高(gao)(gao)空(kong)(kong)(kong)(kong)調(diao)效果(guo)。此外(wai)(wai)，在(zai)使用(yong)空(kong)(kong)(kong)(kong)調(diao)除霜除霧時，要使用(yong)外(wai)(wai)循(xun)(xun)(xun)(xun)環(huan)(huan)才有效。