通風系統系統分類

1、按通(tong)風動(dong)力分類：自然通(tong)風 、機(ji)械通(tong)風；

2、按照通(tong)風服(fu)務范圍： 全(quan)面(mian)通(tong)風 、局部通(tong)風；

3、按氣流方向分類：送(song)（進）、排風（煙）；

4、按通(tong)(tong)(tong)風(feng)(feng)(feng)目的(de)分(fen)類(lei)： 一般換氣通(tong)(tong)(tong)風(feng)(feng)(feng)、熱(re)風(feng)(feng)(feng)供(gong)暖、排毒與除塵、事故(gu)通(tong)(tong)(tong)風(feng)(feng)(feng)、防(fang)護式通(tong)(tong)(tong)風(feng)(feng)(feng)、建筑防(fang)排煙等；

5、按動(dong)力所處的位置分類：動(dong)力集中式和動(dong)力分布式。

通風系統系統功能

1、用室(shi)(shi)外的(de)新(xin)鮮空(kong)氣(qi)更新(xin)室(shi)(shi)內(nei)由(you)于居住及(ji)生活過程而(er)污染了(le)的(de)空(kong)氣(qi)，以保持室(shi)(shi)內(nei)空(kong)氣(qi)的(de)潔凈度達(da)到某(mou)一(yi)最低(di)標(biao)準的(de)水平。

2、增加體內散熱及防止由皮膚潮濕(shi)引起的不舒適，此類通風(feng)可稱為熱舒適通風(feng)。

3、當(dang)室(shi)內氣溫(wen)高于室(shi)外的(de)氣溫(wen)時，使建筑構件降溫(wen)，此類(lei)通(tong)風名為建筑的(de)降溫(wen)通(tong)風。

該圖片由注冊用戶"中華小當家"提供，版權聲明反饋

通風系統的組成

通風系(xi)統一般(ban)由(you)通風設備、通風管道、消聲器、風機、控制系(xi)統組成(cheng)。

1、通風設備

實驗(yan)室(shi)常(chang)用(yong)通(tong)(tong)風(feng)設備主要有(you)排(pai)毒(du)柜(ju)、原(yuan)子吸(xi)(xi)收罩、萬向排(pai)氣(qi)罩、桌面式通(tong)(tong)風(feng)罩等。排(pai)毒(du)柜(ju)是安(an)全處(chu)理(li)有(you)害(hai)、有(you)毒(du)氣(qi)體或(huo)蒸汽的通(tong)(tong)風(feng)設備，作(zuo)用(yong)是用(yong)來捕捉、密封和(he)轉(zhuan)移污染(ran)物以及有(you)害(hai)氣(qi)體，防止其逃(tao)逸到實驗(yan)室(shi)內(nei)(nei)，這樣通(tong)(tong)過(guo)吸(xi)(xi)入(ru)工(gong)作(zuo)區(qu)域的污染(ran)物，使操作(zuo)者(zhe)吸(xi)(xi)入(ru)接觸的污染(ran)物最小化(hua)。排(pai)毒(du)柜(ju)內(nei)(nei)的氣(qi)流是通(tong)(tong)過(guo)排(pai)風(feng)機將(jiang)實驗(yan)室(shi)內(nei)(nei)的空氣(qi)吸(xi)(xi)進排(pai)毒(du)柜(ju)，將(jiang)排(pai)毒(du)柜(ju)內(nei)(nei)污染(ran)的氣(qi)體桸釋(shi)并通(tong)(tong)過(guo)通(tong)(tong)風(feng)系統排(pai)到戶外后，可以達到低濃度擴散。

2、通風管道

對(dui)于一(yi)般(ban)的(de)普通建筑，若(ruo)室(shi)內排出的(de)氣體沒有(you)腐(fu)蝕(shi)(shi)性，通風(feng)(feng)管(guan)(guan)道可以采(cai)用(yong)鍍鋅鋼板，對(dui)于產(chan)生有(you)腐(fu)蝕(shi)(shi)性氣體的(de)實(shi)驗(yan)室(shi)，風(feng)(feng)管(guan)(guan)應采(cai)用(yong)耐腐(fu)蝕(shi)(shi)材料的(de)PVC風(feng)(feng)管(guan)(guan)或玻璃鋼風(feng)(feng)管(guan)(guan)。在一(yi)般(ban)的(de)實(shi)驗(yan)室(shi)通風(feng)(feng)工程，室(shi)內大(da)多采(cai)用(yong)PVC風(feng)(feng)管(guan)(guan)、室(shi)外采(cai)用(yong)玻璃鋼風(feng)(feng)管(guan)(guan)。

3、風機

風(feng)(feng)機主(zhu)要(yao)有軸流(liu)風(feng)(feng)機、斜流(liu)風(feng)(feng)機、離(li)心(xin)風(feng)(feng)機。軸流(liu)風(feng)(feng)機、斜流(liu)風(feng)(feng)機適用于(yu)風(feng)(feng)壓小(xiao)、管路短的通(tong)(tong)風(feng)(feng)系(xi)統，如(ru)直接排至窗外或墻外的通(tong)(tong)風(feng)(feng)系(xi)統，簡稱(cheng)直排；玻(bo)離(li)鋼(gang)離(li)心(xin)風(feng)(feng)機適用于(yu)管路長的的通(tong)(tong)風(feng)(feng)系(xi)統，如(ru)通(tong)(tong)過風(feng)(feng)管井(jing)或外墻接管排至屋頂，簡稱(cheng)屋頂排放。風(feng)(feng)機的材質(zhi)：一般分為玻(bo)璃(li)鋼(gang)、PP、PVC等。風(feng)(feng)機的型號根據風(feng)(feng)量和風(feng)(feng)壓選擇。

4、通風控制系統

通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)控制系(xi)統(tong)可根據(ju)不(bu)同(tong)的(de)情況采用(yong)不(bu)同(tong)的(de)控制方式，如，單臺通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)設備定風(feng)(feng)(feng)(feng)(feng)量通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)控制系(xi)統(tong)、多臺通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)設備變頻控制系(xi)統(tong)、多臺通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)設備變頻+變風(feng)(feng)(feng)(feng)(feng)量通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)控制系(xi)統(tong)。