大連車載空調由壓(ya)(ya)縮(suo)(suo)機、冷(leng)(leng)凝器(qi)、節(jie)流元件、蒸(zheng)發器(qi)、風機及必要的(de)(de)(de)(de)(de)控制(zhi)(zhi)部(bu)件構成(cheng)，用于(yu)調(diao)(diao)節(jie)車(che)內(nei)(nei)(nei)(nei)溫(wen)度、濕度，給(gei)乘員提供舒適(shi)環(huan)(huan)(huan)境的(de)(de)(de)(de)(de)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系統(tong)。當(dang)(dang)(dang)壓(ya)(ya)縮(suo)(suo)機工(gong)作時(shi)(shi)，壓(ya)(ya)縮(suo)(suo)機吸入從蒸(zheng)發器(qi)出來的(de)(de)(de)(de)(de)低溫(wen)低壓(ya)(ya)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)態制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)，經(jing)壓(ya)(ya)縮(suo)(suo)，制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)溫(wen)度和壓(ya)(ya)力升(sheng)高，并被送入冷(leng)(leng)凝器(qi)。在(zai)冷(leng)(leng)凝器(qi)內(nei)(nei)(nei)(nei)，高溫(wen)高壓(ya)(ya)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)態制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)把(ba)熱量傳遞給(gei)經(jing)過冷(leng)(leng)凝器(qi)的(de)(de)(de)(de)(de)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)而(er)液(ye)化，變成(cheng)液(ye)體。液(ye)態制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)流經(jing)節(jie)流裝置時(shi)(shi)，溫(wen)度和壓(ya)(ya)力降(jiang)低，并進(jin)入蒸(zheng)發器(qi)。在(zai)蒸(zheng)發器(qi)內(nei)(nei)(nei)(nei)，低溫(wen)低壓(ya)(ya)的(de)(de)(de)(de)(de)液(ye)態制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)吸收經(jing)過蒸(zheng)發器(qi)的(de)(de)(de)(de)(de)車(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)熱量而(er)蒸(zheng)發，變成(cheng)氣(qi)(qi)(qi)(qi)(qi)體。氣(qi)(qi)(qi)(qi)(qi)體又被壓(ya)(ya)縮(suo)(suo)機吸入進(jin)行下一(yi)輪循(xun)環(huan)(huan)(huan)。這樣，通過制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)在(zai)系統(tong)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)(de)循(xun)環(huan)(huan)(huan)，不斷吸收車(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)熱量并排到車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)中，使車(che)內(nei)(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)溫(wen)度逐漸下降(jiang)。內(nei)(nei)(nei)(nei)循(xun)環(huan)(huan)(huan)可(ke)(ke)以提高空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)(guo)，相(xiang)當(dang)(dang)(dang)于(yu)把(ba)室內(nei)(nei)(nei)(nei)冷(leng)(leng)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)再制(zhi)(zhi)冷(leng)(leng)，空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)(guo)當(dang)(dang)(dang)然更好(hao)了。不過長時(shi)(shi)間使用內(nei)(nei)(nei)(nei)循(xun)環(huan)(huan)(huan)會使車(che)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)(de)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質(zhi)量降(jiang)低，可(ke)(ke)能(neng)讓(rang)人(ren)感覺頭昏腦漲。應當(dang)(dang)(dang)開一(yi)會兒內(nei)(nei)(nei)(nei)循(xun)環(huan)(huan)(huan)就使用幾分鐘外(wai)循(xun)環(huan)(huan)(huan)，讓(rang)新鮮空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)進(jin)入車(che)內(nei)(nei)(nei)(nei)，改(gai)善空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質(zhi)量。如(ru)果(guo)(guo)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)內(nei)(nei)(nei)(nei)外(wai)循(xun)環(huan)(huan)(huan)開關是機械式的(de)(de)(de)(de)(de)撥(bo)桿而(er)非按鈕，可(ke)(ke)以把(ba)撥(bo)桿放(fang)在(zai)內(nei)(nei)(nei)(nei)外(wai)循(xun)環(huan)(huan)(huan)的(de)(de)(de)(de)(de)中間，讓(rang)車(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)適(shi)量進(jin)入，既(ji)能(neng)提升(sheng)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)質(zhi)量，又能(neng)提高空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)(guo)。此(ci)外(wai)，在(zai)使用空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)除(chu)霜除(chu)霧時(shi)(shi)，要使用外(wai)循(xun)環(huan)(huan)(huan)才(cai)有效。