山東金(jin)光(guang)正(zheng)壓(ya)多葉送(song)(song)風(feng)(feng)口、排(pai)煙口風(feng)(feng)量、余壓(ya)值達不到(dao)規范要(yao)求的(de)現象(xiang)在(zai)工程中比(bi)(bi)較普遍，有的(de)山東金(jin)光(guang)正(zheng)壓(ya)多葉送(song)(song)風(feng)(feng)口、排(pai)煙口的(de)風(feng)(feng)速甚至接近于零，造成這種現象(xiang)的(de)原因(yin)比(bi)(bi)較復雜(za)，主(zhu)要(yao)有以(yi)下幾個方面：

1、山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)(xiao)(xiao)(xiao)防(fang)高(gao)溫(wen)(wen)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)選(xuan)型不(bu)當。按規(gui)范要(yao)求(qiu)，防(fang)煙(yan)樓梯間(jian)及前室(shi)、合(he)(he)(he)用(yong)(yong)前室(shi)和消(xiao)(xiao)(xiao)(xiao)防(fang)電梯間(jian)前室(shi)的(de)(de)(de)(de)(de)機(ji)械加壓(ya)送風(feng)(feng)(feng)(feng)量(liang)，應由計(ji)算確定(ding)(ding)(ding)，當計(ji)算值(zhi)和規(gui)范規(gui)定(ding)(ding)(ding)的(de)(de)(de)(de)(de)值(zhi)不(bu)一(yi)致時，應按兩者(zhe)中較大值(zhi)確定(ding)(ding)(ding)，有的(de)(de)(de)(de)(de)設(she)(she)計(ji)直接按規(gui)范給定(ding)(ding)(ding)的(de)(de)(de)(de)(de)值(zhi)確定(ding)(ding)(ding)，往往導(dao)致選(xuan)用(yong)(yong)的(de)(de)(de)(de)(de)山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)(xiao)(xiao)(xiao)防(fang)高(gao)溫(wen)(wen)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)風(feng)(feng)(feng)(feng)量(liang)、風(feng)(feng)(feng)(feng)壓(ya)偏小，不(bu)能滿足(zu)要(yao)求(qiu);有的(de)(de)(de)(de)(de)設(she)(she)計(ji)采用(yong)(yong)通風(feng)(feng)(feng)(feng)與(yu)機(ji)械排(pai)煙(yan)合(he)(he)(he)用(yong)(yong)系統，但施(shi)工中未(wei)按設(she)(she)計(ji)要(yao)求(qiu)選(xuan)用(yong)(yong)雙速山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)(xiao)(xiao)(xiao)防(fang)高(gao)溫(wen)(wen)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji);有的(de)(de)(de)(de)(de)建設(she)(she)單位不(bu)按設(she)(she)計(ji)的(de)(de)(de)(de)(de)山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)(xiao)(xiao)(xiao)防(fang)高(gao)溫(wen)(wen)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)型號訂貨，購買功率規(gui)格較小的(de)(de)(de)(de)(de)山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)(xiao)(xiao)(xiao)防(fang)高(gao)溫(wen)(wen)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)，導(dao)致山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)(xiao)(xiao)(xiao)防(fang)高(gao)溫(wen)(wen)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)風(feng)(feng)(feng)(feng)量(liang)嚴重不(bu)足(zu)山東(dong)(dong)金(jin)(jin)(jin)光(guang)(guang)消(xiao)(xiao)(xiao)(xiao)防(fang)排(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)與(yu)正壓(ya)送風(feng)(feng)(feng)(feng)口(kou)的(de)(de)(de)(de)(de)姻緣(yuan)結合(he)(he)(he)。

2、機(ji)械加(jia)壓送(song)風系統(tong)(tong)與自然排煙(yan)(yan)設(she)施重復設(she)置。對于(yu)建筑(zhu)高(gao)度超過50米(mi)的一類公共建筑(zhu)和(he)建筑(zhu)高(gao)度超過100米(mi)的居住建筑(zhu)，按《高(gao)規》要(yao)求，宜設(she)置機(ji)械加(jia)壓送(song)風系統(tong)(tong)，有的工程(cheng)在上述部位同(tong)時又(you)采用了自然排煙(yan)(yan)，導致火災情況下，機(ji)械加(jia)壓送(song)風系統(tong)(tong)與自然排煙(yan)(yan)窗同(tong)時開啟時，防煙(yan)(yan)樓梯間(jian)難以形成正(zheng)壓，達(da)不(bu)到防煙(yan)(yan)效果。山東(dong)金光消防排煙(yan)(yan)風機(ji)與正(zheng)壓送(song)風口(kou)的姻緣結合(he)

3、合(he)(he)用(yong)(yong)正(zheng)(zheng)壓(ya)送風(feng)(feng)系統(tong)(tong)未設計壓(ya)差調節裝置(zhi)。按規范要(yao)求，機械加壓(ya)送風(feng)(feng)的(de)防煙(yan)樓梯間(jian)(jian)和(he)合(he)(he)用(yong)(yong)前(qian)室(shi)，宜分別獨立設置(zhi)送風(feng)(feng)系統(tong)(tong)，當必須共(gong)用(yong)(yong)一個系統(tong)(tong)時(shi)，應在通向合(he)(he)用(yong)(yong)前(qian)室(shi)的(de)支風(feng)(feng)管上(shang)設置(zhi)壓(ya)差自動調節裝置(zhi)。目前(qian)很(hen)多設計的(de)合(he)(he)用(yong)(yong)正(zheng)(zheng)壓(ya)送風(feng)(feng)系統(tong)(tong)沒有設計壓(ya)差調節裝置(zhi)，無法(fa)形成樓梯間(jian)(jian)的(de)余(yu)壓(ya)值高于前(qian)室(shi)。山(shan)東金光(guang)消防排(pai)煙(yan)風(feng)(feng)機與正(zheng)(zheng)壓(ya)送風(feng)(feng)口(kou)的(de)姻緣結合(he)(he)

4、防煙(yan)(yan)(yan)分區不按規(gui)(gui)范要(yao)(yao)求設(she)置(zhi)擋煙(yan)(yan)(yan)設(she)施。有相(xiang)當一(yi)部(bu)分工程，尤(you)其是(shi)大(da)型商場設(she)置(zhi)機械(xie)排(pai)煙(yan)(yan)(yan)的部(bu)位未按規(gui)(gui)范要(yao)(yao)求在(zai)吊頂下(xia)設(she)置(zhi)擋煙(yan)(yan)(yan)垂(chui)壁(bi)，有的地下(xia)室雖然采用建(jian)筑(zhu)的梁作擋煙(yan)(yan)(yan)設(she)施，但排(pai)煙(yan)(yan)(yan)系統的排(pai)煙(yan)(yan)(yan)口未按規(gui)(gui)范要(yao)(yao)求設(she)在(zai)頂棚或靠近頂棚的墻面上(shang)，而是(shi)設(she)在(zai)梁的下(xia)面。

5、山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)正(zheng)壓(ya)多葉(xie)送(song)風(feng)(feng)口(kou)(kou)設置(zhi)不符(fu)合要求(qiu)。有(you)的(de)豎向防排(pai)煙(yan)系統的(de)山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)正(zheng)壓(ya)多葉(xie)送(song)風(feng)(feng)口(kou)(kou)采(cai)用(yong)固(gu)定百(bai)葉(xie)窗(chuang)式常開風(feng)(feng)口(kou)(kou)，風(feng)(feng)口(kou)(kou)規格尺(chi)寸基本(ben)一致，造成各層山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)正(zheng)壓(ya)多葉(xie)送(song)風(feng)(feng)口(kou)(kou)的(de)風(feng)(feng)量(liang)風(feng)(feng)速(su)嚴重不平衡(heng)，離山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)JGF消(xiao)防高溫排(pai)煙(yan)風(feng)(feng)機較遠的(de)山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)正(zheng)壓(ya)多葉(xie)送(song)風(feng)(feng)口(kou)(kou)的(de)風(feng)(feng)量(liang)不足，甚至末(mo)端的(de)山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)正(zheng)壓(ya)多葉(xie)送(song)風(feng)(feng)口(kou)(kou)的(de)風(feng)(feng)速(su)、風(feng)(feng)量(liang)接(jie)近于(yu)零(ling)。山(shan)東(dong)金(jin)(jin)(jin)光(guang)(guang)消(xiao)防排(pai)煙(yan)風(feng)(feng)機與正(zheng)壓(ya)送(song)風(feng)(feng)口(kou)(kou)的(de)姻緣結合

6、風(feng)(feng)管豎(shu)井施工(gong)質量(liang)差，漏風(feng)(feng)嚴(yan)重。有相當多(duo)的工(gong)程因通風(feng)(feng)豎(shu)井不(bu)(bu)抹(mo)灰、管道連(lian)接(jie)不(bu)(bu)嚴(yan)實，常閉(bi)風(feng)(feng)口(kou)(kou)(kou)關閉(bi)不(bu)(bu)嚴(yan)密，漏風(feng)(feng)十(shi)分(fen)嚴(yan)重，導致(zhi)山東金光正壓(ya)多(duo)葉送風(feng)(feng)口(kou)(kou)(kou)、排煙(yan)口(kou)(kou)(kou)的風(feng)(feng)速(su)、風(feng)(feng)量(liang)達不(bu)(bu)到規范(fan)要求，有的施工(gong)單位甚至取消了豎(shu)井連(lian)接(jie)吊頂(ding)(ding)風(feng)(feng)口(kou)(kou)(kou)的風(feng)(feng)管，利(li)用吊頂(ding)(ding)悶頂(ding)(ding)空(kong)間代替風(feng)(feng)管，也往(wang)往(wang)造成(cheng)風(feng)(feng)管風(feng)(feng)口(kou)(kou)(kou)風(feng)(feng)速(su)接(jie)近于(yu)零。

同(tong)時有的(de)將(jiang)排(pai)煙(yan)系統的(de)山東金光JGF消(xiao)防高溫排(pai)煙(yan)風機排(pai)煙(yan)口設在室內，致使火災情(qing)況(kuang)下煙(yan)從(cong)室內排(pai)到室內，不僅失(shi)去了排(pai)煙(yan)作(zuo)用，而(er)且還可能(neng)造成火災的(de)蔓延擴大。