大連車載空調由壓(ya)縮(suo)機(ji)、冷(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)(qi)(qi)、節(jie)流(liu)元(yuan)件、蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)、風機(ji)及必要(yao)的(de)(de)(de)控(kong)制部件構成(cheng)，用(yong)于調(diao)(diao)節(jie)車內(nei)溫(wen)度(du)、濕(shi)度(du)，給(gei)乘員提供舒適(shi)環(huan)(huan)(huan)(huan)境的(de)(de)(de)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系(xi)統。當壓(ya)縮(suo)機(ji)工作時，壓(ya)縮(suo)機(ji)吸(xi)入從蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)出來的(de)(de)(de)低(di)溫(wen)低(di)壓(ya)的(de)(de)(de)氣(qi)(qi)(qi)態(tai)制冷(leng)(leng)(leng)(leng)(leng)劑，經(jing)(jing)壓(ya)縮(suo)，制冷(leng)(leng)(leng)(leng)(leng)劑的(de)(de)(de)溫(wen)度(du)和壓(ya)力升高(gao)，并(bing)(bing)被(bei)送(song)入冷(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)(qi)(qi)。在(zai)冷(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)(qi)(qi)內(nei)，高(gao)溫(wen)高(gao)壓(ya)的(de)(de)(de)氣(qi)(qi)(qi)態(tai)制冷(leng)(leng)(leng)(leng)(leng)劑把(ba)熱量(liang)(liang)(liang)傳遞給(gei)經(jing)(jing)過(guo)冷(leng)(leng)(leng)(leng)(leng)凝(ning)器(qi)(qi)(qi)的(de)(de)(de)車外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)而液化(hua)，變(bian)成(cheng)液體。液態(tai)制冷(leng)(leng)(leng)(leng)(leng)劑流(liu)經(jing)(jing)節(jie)流(liu)裝置時，溫(wen)度(du)和壓(ya)力降低(di)，并(bing)(bing)進入蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)。在(zai)蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)內(nei)，低(di)溫(wen)低(di)壓(ya)的(de)(de)(de)液態(tai)制冷(leng)(leng)(leng)(leng)(leng)劑吸(xi)收經(jing)(jing)過(guo)蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)器(qi)(qi)(qi)的(de)(de)(de)車內(nei)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)的(de)(de)(de)熱量(liang)(liang)(liang)而蒸(zheng)(zheng)發(fa)(fa)(fa)(fa)，變(bian)成(cheng)氣(qi)(qi)(qi)體。氣(qi)(qi)(qi)體又(you)被(bei)壓(ya)縮(suo)機(ji)吸(xi)入進行下一輪循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)。這樣(yang)，通(tong)過(guo)制冷(leng)(leng)(leng)(leng)(leng)劑在(zai)系(xi)統內(nei)的(de)(de)(de)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)，不(bu)斷吸(xi)收車內(nei)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)的(de)(de)(de)熱量(liang)(liang)(liang)并(bing)(bing)排到車外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)中(zhong)，使(shi)(shi)車內(nei)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)的(de)(de)(de)溫(wen)度(du)逐漸(jian)下降。內(nei)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)可以提高(gao)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果，相當于把(ba)室(shi)內(nei)冷(leng)(leng)(leng)(leng)(leng)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)再(zai)制冷(leng)(leng)(leng)(leng)(leng)，空(kong)(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果當然(ran)更好了(le)。不(bu)過(guo)長時間使(shi)(shi)用(yong)內(nei)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)會(hui)(hui)使(shi)(shi)車內(nei)的(de)(de)(de)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)質量(liang)(liang)(liang)降低(di)，可能(neng)讓人(ren)感覺頭昏腦漲。應當開一會(hui)(hui)兒(er)內(nei)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)就使(shi)(shi)用(yong)幾分鐘(zhong)外(wai)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)，讓新鮮(xian)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)進入車內(nei)，改善(shan)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)質量(liang)(liang)(liang)。如(ru)果空(kong)(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)內(nei)外(wai)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)開關是機(ji)械(xie)式的(de)(de)(de)撥桿而非按鈕，可以把(ba)撥桿放在(zai)內(nei)外(wai)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)的(de)(de)(de)中(zhong)間，讓車外(wai)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)適(shi)量(liang)(liang)(liang)進入，既(ji)能(neng)提升空(kong)(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)(qi)質量(liang)(liang)(liang)，又(you)能(neng)提高(gao)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)效果。此外(wai)，在(zai)使(shi)(shi)用(yong)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)除(chu)霜(shuang)除(chu)霧時，要(yao)使(shi)(shi)用(yong)外(wai)循(xun)(xun)(xun)(xun)(xun)環(huan)(huan)(huan)(huan)才有(you)效。