燃(ran)油(you)燃(ran)燒機(ji)(ji)是一種使(shi)用(yong)液體燃(ran)料的加熱(re)設備，使(shi)燃(ran)料和空氣以一定方式噴出混(hun)合（或混(hun)合噴出）燃(ran)燒的裝置統(tong)稱。 燃(ran)燒機(ji)(ji)按類型和應用(yong)領域分工業燃(ran)燒機(ji)(ji)、燃(ran)燒機(ji)(ji)、民用(yong)燃(ran)燒機(ji)(ji)、特(te)種燃(ran)燒機(ji)(ji)幾(ji)種。

它(ta)由(you)油噴嘴和(he)調風(feng)(feng)器(qi)組(zu)成(cheng)。油噴嘴安置(zhi)在(zai)調風(feng)(feng)器(qi)軸心(xin)線上(shang)，將(jiang)油霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)成(cheng)細滴，以一定的(de)擴散角(jiao)(也稱霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)角(jiao))噴入燃燒(shao)室內(nei)，與(yu)調風(feng)(feng)器(qi)送入的(de)空氣(qi)相混后著火燃燒(shao)。油噴嘴主(zhu)要有(you)壓力霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)和(he)雙(shuang)流體霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)兩種。壓力霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)油噴嘴由(you)分(fen)流片(pian)(pian)、旋(xuan)流片(pian)(pian)和(he)霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)片(pian)(pian)組(zu)成(cheng)。油壓一般(ban)為(wei)2～3兆帕。油在(zai)旋(xuan)流片(pian)(pian)內(nei)產生(sheng)高速(su)旋(xuan)轉運動，經中心(xin)孔噴出，在(zai)離心(xin)力的(de)作用下破碎成(cheng)細滴，經霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)后的(de)油滴平均直徑在(zai) 100微(wei)米以下。雙(shuang)流體霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)油噴嘴利用蒸汽或壓縮(suo)空氣(qi)作為(wei)霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)介(jie)質(zhi)，使油加速(su)而破碎霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)。用蒸汽作為(wei)霧(wu)(wu)(wu)(wu)化(hua)(hua)(hua)介(jie)質(zhi)的(de)Y型(xing)油噴嘴，因蒸汽通道和(he)油通道成(cheng) Y形斜交(jiao)而得(de)名，它(ta)具有(you)負荷調節范圍大、蒸汽消(xiao)耗少的(de)優點。