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如何快速掌握防煙排煙系統構成

    防煙(yan)體系(xi)是(shi)指選(xuan)用機(ji)械加壓(ya)送風或自然通風的方(fang)法(fa)，避(bi)免煙(yan)氣進入樓梯間(jian)、前室、流(liu)亡層（間(jian)）等空(kong)間(jian)的體系(xi)；排煙(yan)體系(xi)是(shi)指選(xuan)用機(ji)械排煙(yan)或天然排煙(yan)的方(fang)法(fa)，將房間(jian)、走(zou)道等空(kong)間(jian)的煙(yan)氣排至修建物(wu)外(wai)的體系(xi)。

    體系(xi)分類防(fang)(fang)(fang)煙(yan)(yan)排(pai)煙(yan)(yan)體系(xi)依照其控煙(yan)(yan)機(ji)理，分為(wei)(wei)防(fang)(fang)(fang)煙(yan)(yan)體系(xi)和排(pai)煙(yan)(yan)體系(xi)，一般稱為(wei)(wei)防(fang)(fang)(fang)煙(yan)(yan)設(she)(she)備(bei)和排(pai)煙(yan)(yan)設(she)(she)備(bei)。防(fang)(fang)(fang)煙(yan)(yan)設(she)(she)備(bei)分為(wei)(wei)機(ji)械(xie)加壓送風的防(fang)(fang)(fang)煙(yan)(yan)設(she)(she)備(bei)和可敞(chang)開外窗的天(tian)然排(pai)煙(yan)(yan)設(she)(she)備(bei)；排(pai)煙(yan)(yan)設(she)(she)備(bei)分為(wei)(wei)機(ji)械(xie)排(pai)煙(yan)(yan)設(she)(she)備(bei)和可敞(chang)開外窗的天(tian)然排(pai)煙(yan)(yan)設(she)(she)備(bei)。

    體系(xi)構成防(fang)(fang)煙(yan)(yan)(yan)排煙(yan)(yan)(yan)體系(xi)由風(feng)口、風(feng)閥、排煙(yan)(yan)(yan)窗和(he)風(feng)機(ji)、風(feng)道以及相應的(de)(de)控制體系(xi)構成。防(fang)(fang)煙(yan)(yan)(yan)體系(xi)。機(ji)械(xie)加壓(ya)(ya)(ya)送(song)風(feng)的(de)(de)防(fang)(fang)煙(yan)(yan)(yan)設備機(ji)械(xie)加壓(ya)(ya)(ya)送(song)風(feng)的(de)(de)防(fang)(fang)煙(yan)(yan)(yan)設備包含加壓(ya)(ya)(ya)送(song)風(feng)機(ji)、加壓(ya)(ya)(ya)送(song)風(feng)管道、加壓(ya)(ya)(ya)送(song)風(feng)口等。當防(fang)(fang)煙(yan)(yan)(yan)樓梯(ti)間加壓(ya)(ya)(ya)送(song)風(feng)而前室不送(song)風(feng)時(shi)，樓梯(ti)間與前室的(de)(de)隔墻上還或許設有余壓(ya)(ya)(ya)閥。

    加(jia)壓(ya)送風(feng)機。一般(ban)選用(yong)(yong)中(zhong)、低壓(ya)離(li)心風(feng)機、混流風(feng)機或(huo)軸(zhou)流風(feng)機。加(jia)壓(ya)送風(feng)管道(dao)選用(yong)(yong)不燃資料制造。加(jia)壓(ya)送風(feng)口(kou)。分為(wei)常(chang)開式(shi)(shi)、常(chang)閉式(shi)(shi)和自(zi)垂百(bai)葉(xie)(xie)式(shi)(shi)。常(chang)開式(shi)(shi)即一般(ban)的固定(ding)葉(xie)(xie)片式(shi)(shi)百(bai)葉(xie)(xie)風(feng)口(kou)；常(chang)閉式(shi)(shi)選用(yong)(yong)手動或(huo)電動敞開，常(chang)用(yong)(yong)于(yu)(yu)前室(shi)或(huo)合用(yong)(yong)前室(shi)；自(zi)垂百(bai)葉(xie)(xie)式(shi)(shi)平常(chang)靠(kao)百(bai)葉(xie)(xie)重力(li)自(zi)行封閉，加(jia)壓(ya)時(shi)自(zi)行敞開，常(chang)用(yong)(yong)于(yu)(yu)防煙樓梯(ti)間。