排(pai)風(feng)(feng)(feng)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)是(shi)送(song)(song)風(feng)(feng)(feng)、排(pai)風(feng)(feng)(feng)、除(chu)塵(chen)(chen)、氣(qi)力(li)輸送(song)(song)以(yi)及防、排(pai)煙系統工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)的統稱。通風(feng)(feng)(feng)噴油工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、凈(jing)化工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、濕簾墻(qiang)降溫工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、無塵(chen)(chen)潔凈(jing)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、噴油凈(jing)化工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、脈沖除(chu)塵(chen)(chen)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、木(mu)工(gong)(gong)(gong)(gong)車間除(chu)塵(chen)(chen)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、旋風(feng)(feng)(feng)除(chu)塵(chen)(chen)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、環保(bao)空調(diao)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、中(zhong)央空調(diao)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、廢氣(qi)凈(jing)化工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)、流水(shui)線工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)。

通(tong)(tong)風(feng)(feng)機(ji)(fan)是(shi)(shi)依靠輸入(ru)的(de)機(ji)械(xie)能(neng)，提高氣體壓力并(bing)排送氣體的(de)機(ji)械(xie)，它是(shi)(shi)一種(zhong)從動的(de)流(liu)體機(ji)械(xie)。 通(tong)(tong)風(feng)(feng)機(ji)廣(guang)泛用(yong)于工(gong)(gong)廠(chang)、礦井、隧道、冷卻(que)塔、車輛、船舶(bo)和(he)(he)建筑物的(de)通(tong)(tong)風(feng)(feng)、排塵和(he)(he)冷卻(que)；鍋爐和(he)(he)工(gong)(gong)業爐窯的(de)通(tong)(tong)風(feng)(feng)和(he)(he)引風(feng)(feng)；空氣調節設(she)備(bei)和(he)(he)家用(yong)電器設(she)備(bei)中(zhong)(zhong)的(de)冷卻(que)和(he)(he)通(tong)(tong)風(feng)(feng)；谷物的(de)烘干和(he)(he)選送；風(feng)(feng)洞風(feng)(feng)源和(he)(he)氣墊船的(de)充(chong)氣和(he)(he)推(tui)進等。 通(tong)(tong)風(feng)(feng)機(ji)的(de)工(gong)(gong)作原理與(yu)透平(ping)壓縮(suo)機(ji)基本(ben)(ben)相(xiang)同(tong)，只是(shi)(shi)由于氣體流(liu)速較低(di)，壓力變(bian)(bian)化不(bu)大，一般(ban)不(bu)需要考慮(lv)氣體比(bi)容的(de)變(bian)(bian)化，即把氣體作為不(bu)可壓縮(suo)流(liu)體處理。 通(tong)(tong)風(feng)(feng)機(ji)已有悠(you)久的(de)歷史。中(zhong)(zhong)國在公元前許多(duo)年就已制造出簡單的(de)木制礱(long)谷風(feng)(feng)車，它的(de)作用(yong)原理與(yu)現(xian)代離心通(tong)(tong)風(feng)(feng)機(ji)基本(ben)(ben)相(xiang)同(tong)。