排(pai)風(feng)工(gong)(gong)程(cheng)(cheng)(cheng)是送(song)(song)風(feng)、排(pai)風(feng)、除(chu)塵、氣力輸送(song)(song)以及防、排(pai)煙系統(tong)工(gong)(gong)程(cheng)(cheng)(cheng)的統(tong)稱。通風(feng)噴油工(gong)(gong)程(cheng)(cheng)(cheng)、凈(jing)化工(gong)(gong)程(cheng)(cheng)(cheng)、濕簾墻降(jiang)溫工(gong)(gong)程(cheng)(cheng)(cheng)、無塵潔凈(jing)工(gong)(gong)程(cheng)(cheng)(cheng)、噴油凈(jing)化工(gong)(gong)程(cheng)(cheng)(cheng)、脈沖除(chu)塵工(gong)(gong)程(cheng)(cheng)(cheng)、木工(gong)(gong)車間除(chu)塵工(gong)(gong)程(cheng)(cheng)(cheng)、旋風(feng)除(chu)塵工(gong)(gong)程(cheng)(cheng)(cheng)、環保(bao)空(kong)調(diao)工(gong)(gong)程(cheng)(cheng)(cheng)、中(zhong)央(yang)空(kong)調(diao)工(gong)(gong)程(cheng)(cheng)(cheng)、廢(fei)氣凈(jing)化工(gong)(gong)程(cheng)(cheng)(cheng)、流水線工(gong)(gong)程(cheng)(cheng)(cheng)。

通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機(fan)是依(yi)靠輸(shu)入(ru)的(de)(de)(de)機械(xie)能，提(ti)高氣體(ti)(ti)壓力(li)并排送氣體(ti)(ti)的(de)(de)(de)機械(xie)，它(ta)(ta)是一(yi)種從(cong)動的(de)(de)(de)流(liu)體(ti)(ti)機械(xie)。 通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機廣泛用于工廠、礦井、隧道、冷卻(que)塔、車(che)輛、船舶和(he)建筑物的(de)(de)(de)通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)、排塵和(he)冷卻(que)；鍋(guo)爐(lu)和(he)工業爐(lu)窯的(de)(de)(de)通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)和(he)引風(feng)(feng)(feng)(feng)(feng)；空氣調(diao)節設備(bei)和(he)家用電(dian)器(qi)設備(bei)中的(de)(de)(de)冷卻(que)和(he)通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)；谷物的(de)(de)(de)烘干和(he)選送；風(feng)(feng)(feng)(feng)(feng)洞風(feng)(feng)(feng)(feng)(feng)源和(he)氣墊船的(de)(de)(de)充氣和(he)推進等。 通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機的(de)(de)(de)工作原理與透平壓縮(suo)機基(ji)本相(xiang)(xiang)同，只是由于氣體(ti)(ti)流(liu)速較低(di)，壓力(li)變化(hua)不大，一(yi)般不需要考慮氣體(ti)(ti)比容(rong)的(de)(de)(de)變化(hua)，即把氣體(ti)(ti)作為不可壓縮(suo)流(liu)體(ti)(ti)處理。 通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機已(yi)有悠久的(de)(de)(de)歷史(shi)。中國在公(gong)元(yuan)前(qian)許多年就(jiu)已(yi)制造出簡單的(de)(de)(de)木制礱(long)谷風(feng)(feng)(feng)(feng)(feng)車(che)，它(ta)(ta)的(de)(de)(de)作用原理與現(xian)代離心通(tong)(tong)(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機基(ji)本相(xiang)(xiang)同。