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風機是依靠輸入的機械能,提高氣體壓力并排送氣體的機械,它是一種從動的流體機械。風機是我國對氣體壓縮和氣體輸送機械的習慣簡稱,通常所說的風機包括通風機,鼓風機,壓縮機以及羅茨鼓風機,離心式風機,回轉式風機,水環式風機,但是鍍鋅通風管批發不包括活塞壓縮機等容積式鼓風機和壓縮機。氣體壓縮和氣體輸送機械是把旋轉的機械轉換為氣體壓力能和動能,并將氣體輸送出去的機械。風機主要由風葉、百葉窗、開窗機構、電機、皮帶輪、進風罩、內框架、機殼、安全網等部件組成。開機時由電機驅動風葉旋轉,并使開窗機構打開百葉窗排風。鍍鋅通風管停(ting)機時百葉窗自(zi)動關閉。風(feng)機廣泛用于工廠、礦井、隧道、冷卻塔、車輛、船舶和(he)(he)建筑(zhu)物的(de)(de)通(tong)(tong)風(feng)、排塵和(he)(he)冷卻;鍋爐和(he)(he)工業爐窯(yao)的(de)(de)通(tong)(tong)風(feng)和(he)(he)引(yin)風(feng);空氣(qi)調節設備(bei)和(he)(he)家用電器設備(bei)中的(de)(de)冷卻和(he)(he)通(tong)(tong)風(feng);谷物的(de)(de)烘干和(he)(he)選送(song);風(feng)洞風(feng)源和(he)(he)氣(qi)墊船的(de)(de)充氣(qi)和(he)(he)推進等。
消(xiao)(xiao)防排(pai)(pai)(pai)煙(yan)(yan)風(feng)機(ji)風(feng)量(liang)(liang)(liang)(liang)(liang)與送(song)風(feng)機(ji)風(feng)量(liang)(liang)(liang)(liang)(liang)計(ji)算方(fang)法是(shi)(shi)根(gen)據(ju)建筑(zhu)面(mian)(mian)積(ji)(ji)來(lai)確定(ding)的(de),每(mei)個防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu)都需(xu)要(yao)獨立(li)計(ji)算其排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang),當(dang)排(pai)(pai)(pai)煙(yan)(yan)風(feng)機(ji)擔(dan)(dan)負一個防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu)的(de)時(shi)(shi)(shi)(shi)候可按(an)平(ping)方(fang)米(mi)面(mian)(mian)積(ji)(ji)不(bu)小(xiao)于(yu)60m3/h計(ji)算,擔(dan)(dan)負多個防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu)則按(an)平(ping)方(fang)米(mi)面(mian)(mian)積(ji)(ji)不(bu)小(xiao)于(yu)120m3/h計(ji)算。送(song)風(feng)量(liang)(liang)(liang)(liang)(liang)按(an)排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang)的(de)50%計(ji)算。每(mei)個防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu)不(bu)應(ying)大于(yu)500平(ping)方(fang)。常見的(de)消(xiao)(xiao)防防排(pai)(pai)(pai)煙(yan)(yan)系統中(zhong),排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang)一般根(gen)據(ju)大防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu)面(mian)(mian)積(ji)(ji)500*120等于(yu)60000立(li)方(fang)每(mei)小(xiao)時(shi)(shi)(shi)(shi)計(ji)算,在設(she)計(ji)排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang)的(de)時(shi)(shi)(shi)(shi)候要(yao)注意漏(lou)風(feng)量(liang)(liang)(liang)(liang)(liang),一般可按(an)小(xiao)漏(lou)風(feng)量(liang)(liang)(liang)(liang)(liang)10%計(ji)算。例如:當(dang)建筑(zhu)面(mian)(mian)積(ji)(ji)為(wei)1000平(ping)方(fang)時(shi)(shi)(shi)(shi),需(xu)要(yao)設(she)置兩個防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu),每(mei)個防煙(yan)(yan)分(fen)(fen)區(qu)(qu)(qu)(qu)(qu)的(de)大面(mian)(mian)積(ji)(ji)為(wei)500平(ping)方(fang),排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang)是(shi)(shi)500*1203/h=600003/h,再加上小(xiao)漏(lou)風(feng)量(liang)(liang)(liang)(liang)(liang)10%為(wei)60003/h,總排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang)應(ying)為(wei)660003/h,其中(zhong)送(song)風(feng)量(liang)(liang)(liang)(liang)(liang)為(wei)排(pai)(pai)(pai)煙(yan)(yan)量(liang)(liang)(liang)(liang)(liang)的(de)50%應(ying)為(wei)330003/h。
消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)機(ji)(ji)(ji)一(yi)(yi)般(ban)(ban)是采用離心式(shi)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)和軸(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)兩種重要(yao)的(de)(de)(de)(de)(de)(de)型(xing)(xing)(xing)(xing)式(shi)。從消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)風(feng)(feng)(feng)(feng)(feng)量(liang)、風(feng)(feng)(feng)(feng)(feng)壓(ya)考慮來看,消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)是高比轉(zhuan)高效率的(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji),更加的(de)(de)(de)(de)(de)(de)適合選用軸(zhou)(zhou)流(liu)(liu)(liu)(liu)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)。軸(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)有兩種設計型(xing)(xing)(xing)(xing)式(shi),一(yi)(yi)種為電機(ji)(ji)(ji)與(yu)主(zhu)氣(qi)流(liu)(liu)(liu)(liu)分(fen)離型(xing)(xing)(xing)(xing)式(shi),另一(yi)(yi)種為電機(ji)(ji)(ji)置于(yu)主(zhu)氣(qi)流(liu)(liu)(liu)(liu)之中。根據煙(yan)(yan)氣(qi)溫(wen)度(du)的(de)(de)(de)(de)(de)(de)不(bu)同,采用不(bu)同型(xing)(xing)(xing)(xing)式(shi)的(de)(de)(de)(de)(de)(de)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji),溫(wen)度(du)大(da)于(yu)400℃時,采用電機(ji)(ji)(ji)與(yu)主(zhu)氣(qi)流(liu)(liu)(liu)(liu)分(fen)離型(xing)(xing)(xing)(xing)式(shi),溫(wen)度(du)小(xiao)于(yu)400℃大(da)于(yu)150℃,兩種型(xing)(xing)(xing)(xing)式(shi)的(de)(de)(de)(de)(de)(de)電機(ji)(ji)(ji)都可(ke)以選擇(ze),在(zai)溫(wen)度(du)小(xiao)于(yu)150℃的(de)(de)(de)(de)(de)(de)時候,采用電機(ji)(ji)(ji)置于(yu)主(zhu)氣(qi)流(liu)(liu)(liu)(liu)之中。 軸(zhou)(zhou)流(liu)(liu)(liu)(liu)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)(liu)量(liang)范圍從7200m?/h至110000m?/h,有不(bu)同型(xing)(xing)(xing)(xing)號(hao)的(de)(de)(de)(de)(de)(de)編制,用來滿(man)足(zu)(zu)不(bu)同通(tong)風(feng)(feng)(feng)(feng)(feng)排(pai)(pai)(pai)(pai)煙(yan)(yan)流(liu)(liu)(liu)(liu)量(liang)的(de)(de)(de)(de)(de)(de)需求。消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)可(ke)以根據壓(ya)力情況的(de)(de)(de)(de)(de)(de)不(bu)同分(fen)為兩種類(lei)型(xing)(xing)(xing)(xing),一(yi)(yi)類(lei)為軸(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)機(ji)(ji)(ji),其各機(ji)(ji)(ji)號(hao)的(de)(de)(de)(de)(de)(de)壓(ya)力在(zai)600Pa左右,另一(yi)(yi)類(lei)為斜流(liu)(liu)(liu)(liu)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji),各機(ji)(ji)(ji)號(hao)的(de)(de)(de)(de)(de)(de)壓(ya)力在(zai)1000Pa左右。為了滿(man)足(zu)(zu)排(pai)(pai)(pai)(pai)煙(yan)(yan)量(liang)和通(tong)風(feng)(feng)(feng)(feng)(feng)換氣(qi)的(de)(de)(de)(de)(de)(de)要(yao)求,消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)一(yi)(yi)般(ban)(ban)都設計了雙速型(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de)結構模式(shi)。低速可(ke)以通(tong)風(feng)(feng)(feng)(feng)(feng)使用,高速可(ke)以排(pai)(pai)(pai)(pai)放煙(yan)(yan)霧,這(zhe)樣不(bu)但可(ke)以節約能(neng)源同時又(you)降(jiang)低了噪聲污染(ran)。
1) 送(song)(song)風(feng),包括通氣(qi),如(ru)送(song)(song)鮮風(feng)和排氣(qi),這(zhe)個范圍很(hen)廣,如(ru)工廠車間(jian)(jian),生產場(chang)地空(kong)氣(qi),由于有(you)害(hai)氣(qi)體產生需(xu)要(yao)(yao)排出室外,又需(xu)要(yao)(yao)把室外空(kong)氣(qi)輸(shu)(shu)送(song)(song)至室內(nei)。這(zhe)時(shi)就(jiu)(jiu)要(yao)(yao)使(shi)(shi)用(yong)流量大(da)而壓力小的(de)(de)(de)空(kong)氣(qi)輸(shu)(shu)送(song)(song)管(guan)(guan)(guan)(guan)(guan)道,螺旋(xuan)(xuan)風(feng)管(guan)(guan)(guan)(guan)(guan)就(jiu)(jiu)適(shi)用(yong),一般(ban)情(qing)況(kuang)下使(shi)(shi)用(yong)鍍(du)鋅鐵管(guan)(guan)(guan)(guan)(guan),有(you)腐蝕(shi)性(xing)及(ji)特別潮濕場(chang)所使(shi)(shi)用(yong)不(bu)銹鋼(gang)管(guan)(guan)(guan)(guan)(guan)。2) 送(song)(song)冷(leng)風(feng)。常見的(de)(de)(de)是中(zhong)央空(kong)調的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)道,這(zhe)種管(guan)(guan)(guan)(guan)(guan)道需(xu)要(yao)(yao)加保溫材(cai)料(liao)。螺旋(xuan)(xuan)風(feng)管(guan)(guan)(guan)(guan)(guan)可(ke)內(nei)貼保溫材(cai)料(liao),外表看來美觀。3) 排油煙(yan)。飯店、酒樓、賓館的(de)(de)(de)廚房均有(you)大(da)量油煙(yan)產生,需(xu)要(yao)(yao)排出,使(shi)(shi)用(yong)圓形的(de)(de)(de)風(feng)管(guan)(guan)(guan)(guan)(guan)就(jiu)(jiu)是油煙(yan)囪(cong)。在這(zhe)里,螺旋(xuan)(xuan)風(feng)管(guan)(guan)(guan)(guan)(guan)該叫做油煙(yan)管(guan)(guan)(guan)(guan)(guan)。4) 除塵(chen)。有(you)些(xie)工廠生產車間(jian)(jian)很(hen)多塵(chen)埃,需(xu)要(yao)(yao)專門的(de)(de)(de)除塵(chen)裝(zhuang)置,其中(zhong)量較大(da)的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)道,可(ke)使(shi)(shi)用(yong)螺旋(xuan)(xuan)風(feng)管(guan)(guan)(guan)(guan)(guan)。5) 散裝(zhuang)物料(liao)輸(shu)(shu)送(song)(song)。有(you)些(xie)工廠的(de)(de)(de)生產過(guo)程(cheng)中(zhong),需(xu)要(yao)(yao)輸(shu)(shu)送(song)(song)松(song)散的(de)(de)(de)顆粒,特別是比重(zhong)不(bu)大(da)的(de)(de)(de)如(ru)發泡(pao)塑料(liao)粒之(zhi)類的(de)(de)(de)使(shi)(shi)用(yong)螺旋(xuan)(xuan)風(feng)管(guan)(guan)(guan)(guan)(guan)造價低(di)、效果好。