排風(feng)工(gong)(gong)(gong)(gong)程(cheng)是(shi)送風(feng)、排風(feng)、除塵、氣力輸送以及防、排煙(yan)系(xi)統工(gong)(gong)(gong)(gong)程(cheng)的統稱。通(tong)風(feng)噴油工(gong)(gong)(gong)(gong)程(cheng)、凈(jing)化工(gong)(gong)(gong)(gong)程(cheng)、濕簾墻降溫工(gong)(gong)(gong)(gong)程(cheng)、無(wu)塵潔凈(jing)工(gong)(gong)(gong)(gong)程(cheng)、噴油凈(jing)化工(gong)(gong)(gong)(gong)程(cheng)、脈沖除塵工(gong)(gong)(gong)(gong)程(cheng)、木(mu)工(gong)(gong)(gong)(gong)車間除塵工(gong)(gong)(gong)(gong)程(cheng)、旋風(feng)除塵工(gong)(gong)(gong)(gong)程(cheng)、環保空調(diao)工(gong)(gong)(gong)(gong)程(cheng)、中央空調(diao)工(gong)(gong)(gong)(gong)程(cheng)、廢氣凈(jing)化工(gong)(gong)(gong)(gong)程(cheng)、流(liu)水線工(gong)(gong)(gong)(gong)程(cheng)。

通(tong)風(feng)(feng)(feng)機(ji)(ji)(fan)是依靠輸入的(de)(de)(de)(de)(de)機(ji)(ji)械能，提高氣(qi)(qi)體(ti)(ti)壓力并(bing)排送氣(qi)(qi)體(ti)(ti)的(de)(de)(de)(de)(de)機(ji)(ji)械，它是一(yi)種從(cong)動的(de)(de)(de)(de)(de)流體(ti)(ti)機(ji)(ji)械。 通(tong)風(feng)(feng)(feng)機(ji)(ji)廣(guang)泛用(yong)于(yu)工廠(chang)、礦井(jing)、隧道、冷卻塔、車輛、船舶和(he)(he)建筑(zhu)物(wu)的(de)(de)(de)(de)(de)通(tong)風(feng)(feng)(feng)、排塵和(he)(he)冷卻；鍋(guo)爐和(he)(he)工業爐窯的(de)(de)(de)(de)(de)通(tong)風(feng)(feng)(feng)和(he)(he)引風(feng)(feng)(feng)；空(kong)氣(qi)(qi)調節設備和(he)(he)家用(yong)電(dian)器設備中的(de)(de)(de)(de)(de)冷卻和(he)(he)通(tong)風(feng)(feng)(feng)；谷物(wu)的(de)(de)(de)(de)(de)烘(hong)干和(he)(he)選送；風(feng)(feng)(feng)洞風(feng)(feng)(feng)源和(he)(he)氣(qi)(qi)墊(dian)船的(de)(de)(de)(de)(de)充(chong)氣(qi)(qi)和(he)(he)推進等。 通(tong)風(feng)(feng)(feng)機(ji)(ji)的(de)(de)(de)(de)(de)工作(zuo)(zuo)原(yuan)理(li)與(yu)透平壓縮機(ji)(ji)基本(ben)相(xiang)同，只是由(you)于(yu)氣(qi)(qi)體(ti)(ti)流速(su)較低，壓力變化(hua)不(bu)大，一(yi)般不(bu)需要考慮氣(qi)(qi)體(ti)(ti)比容的(de)(de)(de)(de)(de)變化(hua)，即把氣(qi)(qi)體(ti)(ti)作(zuo)(zuo)為不(bu)可壓縮流體(ti)(ti)處理(li)。 通(tong)風(feng)(feng)(feng)機(ji)(ji)已有悠久的(de)(de)(de)(de)(de)歷史。中國(guo)在(zai)公元(yuan)前許多年就已制造出(chu)簡(jian)單的(de)(de)(de)(de)(de)木制礱谷風(feng)(feng)(feng)車，它的(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)原(yuan)理(li)與(yu)現代離心通(tong)風(feng)(feng)(feng)機(ji)(ji)基本(ben)相(xiang)同。