通(tong)風(feng)(feng)(feng)(feng)柜(ju)按照(zhao)排(pai)(pai)風(feng)(feng)(feng)(feng)方(fang)式可分為上(shang)部(bu)排(pai)(pai)風(feng)(feng)(feng)(feng)式、下(xia)(xia)部(bu)排(pai)(pai)風(feng)(feng)(feng)(feng)式和上(shang)下(xia)(xia)同(tong)時排(pai)(pai)風(feng)(feng)(feng)(feng)式三類。為保證工作(zuo)區風(feng)(feng)(feng)(feng)速均勻，對(dui)(dui)于(yu)(yu)冷(leng)過(guo)程的(de)(de)通(tong)風(feng)(feng)(feng)(feng)柜(ju)應采用(yong)下(xia)(xia)部(bu)排(pai)(pai)風(feng)(feng)(feng)(feng)式，對(dui)(dui)于(yu)(yu)熱(re)過(guo)程的(de)(de)通(tong)風(feng)(feng)(feng)(feng)柜(ju)采用(yong)上(shang)部(bu)排(pai)(pai)風(feng)(feng)(feng)(feng)式，對(dui)(dui)于(yu)(yu)發(fa)(fa)熱(re)量(liang)(liang)不(bu)穩定的(de)(de)過(guo)程，可在上(shang)下(xia)(xia)均設(she)排(pai)(pai)風(feng)(feng)(feng)(feng)口隨柜(ju)內發(fa)(fa)熱(re)量(liang)(liang)的(de)(de)變化調節上(shang)下(xia)(xia)排(pai)(pai)風(feng)(feng)(feng)(feng)量(liang)(liang)的(de)(de)比例(li)，從(cong)而(er)得到均勻的(de)(de)風(feng)(feng)(feng)(feng)速。

　　通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)柜(ju)(ju)按照(zhao)進(jin)風(feng)(feng)(feng)(feng)(feng)方式(shi)(shi)分(fen)類(lei)也分(fen)三類(lei)：(1)通(tong)(tong)過室(shi)內進(jin)風(feng)(feng)(feng)(feng)(feng)在柜(ju)(ju)內循(xun)環(huan)后(hou)排出(chu)室(shi)外(wai)稱為(wei)全排風(feng)(feng)(feng)(feng)(feng)式(shi)(shi)，這是(shi)應用非常廣(guang)泛的(de)(de)(de)一(yi)(yi)種(zhong)類(lei)型。當通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)柜(ju)(ju)設置于采暖(nuan)或對溫濕度有控制(zhi)要求房間(jian)時，為(wei)節(jie)省采暖(nuan)，空(kong)調(diao)能耗，采用從室(shi)外(wai)取補(bu)給風(feng)(feng)(feng)(feng)(feng)在柜(ju)(ju)內循(xun)環(huan)后(hou)排出(chu)室(shi)外(wai)的(de)(de)(de)方式(shi)(shi)稱為(wei)補(bu)風(feng)(feng)(feng)(feng)(feng)式(shi)(shi)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)柜(ju)(ju)。(2)再一(yi)(yi)種(zhong)就(jiu)是(shi)變(bian)風(feng)(feng)(feng)(feng)(feng)量(liang)控 制(zhi)式(shi)(shi)的(de)(de)(de)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)柜(ju)(ju)。普通(tong)(tong)的(de)(de)(de)定風(feng)(feng)(feng)(feng)(feng)量(liang)系統需要人工(gong)調(diao)整(zheng)固定葉片的(de)(de)(de)風(feng)(feng)(feng)(feng)(feng)閥，調(diao)節(jie)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)柜(ju)(ju)的(de)(de)(de)排風(feng)(feng)(feng)(feng)(feng)量(liang)，當調(diao)節(jie)閥門到某一(yi)(yi)角(jiao)度時達(da)到希望的(de)(de)(de)面(mian)風(feng)(feng)(feng)(feng)(feng)速。(3)變(bian)風(feng)(feng)(feng)(feng)(feng)量(liang)控制(zhi)是(shi)通(tong)(tong)過調(diao)節(jie)閥門的(de)(de)(de)傳感器改(gai)變(bian)風(feng)(feng)(feng)(feng)(feng)量(liang)達(da)到給定的(de)(de)(de)面(mian)風(feng)(feng)(feng)(feng)(feng)速，當然標準式(shi)(shi)成本低(di)、變(bian)風(feng)(feng)(feng)(feng)(feng)量(liang)成本高，適用于要求精(jing)度高的(de)(de)(de)場合。

　　通風柜按照使(shi)用狀態分類可分為(wei)整體式(shi)下部(bu)開放(fang)式(shi)、落地(di)式(shi)、兩面式(shi)、三面玻璃式(shi)、桌上(shang)式(shi)、連體式(shi)以及根據不(bu)同實驗(yan)使(shi)用需要而設(she)計的對(dui)放(fang)射(she)性實驗(yan)的、對(dui)合成實驗(yan)的，對(dui)過氯酸實驗(yan)的專用通風柜。