大連車載空調由壓(ya)(ya)縮(suo)機、冷(leng)(leng)(leng)(leng)凝(ning)(ning)器(qi)(qi)(qi)、節(jie)流元(yuan)件、蒸(zheng)發(fa)(fa)器(qi)(qi)(qi)、風機及(ji)必要的(de)(de)控制(zhi)部件構(gou)成(cheng)(cheng)，用于調(diao)(diao)節(jie)車(che)(che)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)、濕(shi)度(du)，給(gei)乘員提供舒(shu)適環(huan)境的(de)(de)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系統。當(dang)壓(ya)(ya)縮(suo)機工(gong)作時(shi)，壓(ya)(ya)縮(suo)機吸(xi)(xi)(xi)入(ru)(ru)從蒸(zheng)發(fa)(fa)器(qi)(qi)(qi)出來的(de)(de)低(di)(di)(di)(di)溫(wen)(wen)(wen)低(di)(di)(di)(di)壓(ya)(ya)的(de)(de)氣(qi)(qi)(qi)(qi)態(tai)制(zhi)冷(leng)(leng)(leng)(leng)劑，經(jing)壓(ya)(ya)縮(suo)，制(zhi)冷(leng)(leng)(leng)(leng)劑的(de)(de)溫(wen)(wen)(wen)度(du)和(he)壓(ya)(ya)力升高(gao)，并(bing)被(bei)送入(ru)(ru)冷(leng)(leng)(leng)(leng)凝(ning)(ning)器(qi)(qi)(qi)。在(zai)冷(leng)(leng)(leng)(leng)凝(ning)(ning)器(qi)(qi)(qi)內(nei)(nei)(nei)，高(gao)溫(wen)(wen)(wen)高(gao)壓(ya)(ya)的(de)(de)氣(qi)(qi)(qi)(qi)態(tai)制(zhi)冷(leng)(leng)(leng)(leng)劑把熱(re)量(liang)(liang)傳遞(di)給(gei)經(jing)過(guo)冷(leng)(leng)(leng)(leng)凝(ning)(ning)器(qi)(qi)(qi)的(de)(de)車(che)(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)而液(ye)化，變成(cheng)(cheng)液(ye)體。液(ye)態(tai)制(zhi)冷(leng)(leng)(leng)(leng)劑流經(jing)節(jie)流裝置時(shi)，溫(wen)(wen)(wen)度(du)和(he)壓(ya)(ya)力降(jiang)(jiang)低(di)(di)(di)(di)，并(bing)進(jin)入(ru)(ru)蒸(zheng)發(fa)(fa)器(qi)(qi)(qi)。在(zai)蒸(zheng)發(fa)(fa)器(qi)(qi)(qi)內(nei)(nei)(nei)，低(di)(di)(di)(di)溫(wen)(wen)(wen)低(di)(di)(di)(di)壓(ya)(ya)的(de)(de)液(ye)態(tai)制(zhi)冷(leng)(leng)(leng)(leng)劑吸(xi)(xi)(xi)收(shou)(shou)經(jing)過(guo)蒸(zheng)發(fa)(fa)器(qi)(qi)(qi)的(de)(de)車(che)(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)熱(re)量(liang)(liang)而蒸(zheng)發(fa)(fa)，變成(cheng)(cheng)氣(qi)(qi)(qi)(qi)體。氣(qi)(qi)(qi)(qi)體又被(bei)壓(ya)(ya)縮(suo)機吸(xi)(xi)(xi)入(ru)(ru)進(jin)行下(xia)一輪(lun)循(xun)環(huan)。這樣，通過(guo)制(zhi)冷(leng)(leng)(leng)(leng)劑在(zai)系統內(nei)(nei)(nei)的(de)(de)循(xun)環(huan)，不(bu)斷吸(xi)(xi)(xi)收(shou)(shou)車(che)(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)熱(re)量(liang)(liang)并(bing)排到車(che)(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)中(zhong)(zhong)，使(shi)車(che)(che)內(nei)(nei)(nei)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)的(de)(de)溫(wen)(wen)(wen)度(du)逐漸(jian)下(xia)降(jiang)(jiang)。內(nei)(nei)(nei)循(xun)環(huan)可以提高(gao)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)(guo)(guo)，相當(dang)于把室內(nei)(nei)(nei)冷(leng)(leng)(leng)(leng)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)再(zai)制(zhi)冷(leng)(leng)(leng)(leng)，空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)(guo)(guo)當(dang)然更好了。不(bu)過(guo)長(chang)時(shi)間使(shi)用內(nei)(nei)(nei)循(xun)環(huan)會使(shi)車(che)(che)內(nei)(nei)(nei)的(de)(de)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質(zhi)量(liang)(liang)降(jiang)(jiang)低(di)(di)(di)(di)，可能(neng)讓人感覺頭昏腦(nao)漲。應當(dang)開(kai)一會兒內(nei)(nei)(nei)循(xun)環(huan)就使(shi)用幾(ji)分(fen)鐘外(wai)循(xun)環(huan)，讓新鮮空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)進(jin)入(ru)(ru)車(che)(che)內(nei)(nei)(nei)，改善空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質(zhi)量(liang)(liang)。如果(guo)(guo)(guo)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)內(nei)(nei)(nei)外(wai)循(xun)環(huan)開(kai)關是機械式的(de)(de)撥(bo)桿(gan)而非按鈕，可以把撥(bo)桿(gan)放在(zai)內(nei)(nei)(nei)外(wai)循(xun)環(huan)的(de)(de)中(zhong)(zhong)間，讓車(che)(che)外(wai)空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)適量(liang)(liang)進(jin)入(ru)(ru)，既能(neng)提升空(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質(zhi)量(liang)(liang)，又能(neng)提高(gao)空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果(guo)(guo)(guo)。此外(wai)，在(zai)使(shi)用空(kong)(kong)(kong)(kong)(kong)調(diao)(diao)除霜除霧時(shi)，要使(shi)用外(wai)循(xun)環(huan)才有效。