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按照氣(qi)(qi)流(liu)(liu)(liu)運(yun)動(dong)(dong)來進(jin)行風機(ji)(ji)(ji)(ji)分類的(de)(de)(de)(de)有:1離(li)心(xin)風機(ji)(ji)(ji)(ji),氣(qi)(qi)流(liu)(liu)(liu)進(jin)入旋(xuan)轉(zhuan)的(de)(de)(de)(de)葉(xie)(xie)(xie)(xie)片通道,在離(li)心(xin)力(li)(li)作用(yong)(yong)下(xia)氣(qi)(qi)體被壓(ya)(ya)縮并沿著半徑方向流(liu)(liu)(liu)動(dong)(dong)。2軸(zhou)(zhou)流(liu)(liu)(liu)風機(ji)(ji)(ji)(ji)氣(qi)(qi)流(liu)(liu)(liu)軸(zhou)(zhou)向進(jin)入風機(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)輪(lun)后,在旋(xuan)轉(zhuan)葉(xie)(xie)(xie)(xie)片的(de)(de)(de)(de)流(liu)(liu)(liu)道中沿著軸(zhou)(zhou)線(xian)方向流(liu)(liu)(liu)動(dong)(dong)的(de)(de)(de)(de)風機(ji)(ji)(ji)(ji)。相對于(yu)離(li)心(xin)風機(ji)(ji)(ji)(ji),軸(zhou)(zhou)流(liu)(liu)(liu)風機(ji)(ji)(ji)(ji)具有流(liu)(liu)(liu)量(liang)大、體積小(xiao)、壓(ya)(ya)頭低的(de)(de)(de)(de)特點(dian),用(yong)(yong)于(yu)有灰塵和腐蝕性(xing)氣(qi)(qi)體場(chang)合時需注意。3斜流(liu)(liu)(liu)式(混流(liu)(liu)(liu)式)風機(ji)(ji)(ji)(ji),在風機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)葉(xie)(xie)(xie)(xie)輪(lun)中,氣(qi)(qi)流(liu)(liu)(liu)的(de)(de)(de)(de)方向處于(yu)軸(zhou)(zhou)流(liu)(liu)(liu)式之間,近(jin)似(si)沿錐流(liu)(liu)(liu)動(dong)(dong),故可(ke)稱為斜流(liu)(liu)(liu)式(混流(liu)(liu)(liu)式)風機(ji)(ji)(ji)(ji)。這(zhe)種風機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)壓(ya)(ya)力(li)(li)系(xi)(xi)數比軸(zhou)(zhou)流(liu)(liu)(liu)式風機(ji)(ji)(ji)(ji)高,而流(liu)(liu)(liu)量(liang)系(xi)(xi)數比離(li)心(xin)式風機(ji)(ji)(ji)(ji)高。
什(shen)么是(shi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan),常見風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有哪些類(lei)型,風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)主要指中(zhong)央空(kong)調系(xi)統(tong)的(de)(de)通(tong)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道,它(ta)常常被忽視,但卻(que)是(shi)空(kong)調系(xi)統(tong)的(de)(de)重(zhong)要組成部分(fen)(fen)。風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)由薄鋼板、鋁(lv)板、硬聚氯乙(yi)烯板、玻(bo)璃(li)鋼以及(ji)其(qi)(qi)它(ta)復(fu)合(he)(he)材(cai)料等制成的(de)(de),用(yong)于輸(shu)送空(kong)氣(qi)和空(kong)氣(qi)混(hun)合(he)(he)物的(de)(de)各種(zhong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道的(de)(de)總稱。1、按照材(cai)質可分(fen)(fen)為:金(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、非金(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。其(qi)(qi)中(zhong):(1)金(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)又可分(fen)(fen)為:鋼板風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、鋁(lv)板風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不銹鋼風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等;(2)非金(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)可以分(fen)(fen)為:硬聚氯乙(yi)烯風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、有機玻(bo)璃(li)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、無(wu)機玻(bo)璃(li)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、玻(bo)璃(li)鋼風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)以及(ji)其(qi)(qi)它(ta)復(fu)合(he)(he)材(cai)料風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等;2、按照風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)外形(xing)可分(fen)(fen)為:圓形(xing)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、矩形(xing)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan);3、按照通(tong)風(feng)(feng)(feng)(feng)空(kong)調系(xi)統(tong)工作壓(ya)力可分(fen)(fen)為:高壓(ya)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、中(zhong)壓(ya)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、低壓(ya)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)三個類(lei)別,
防(fang)(fang)(fang)火(huo)(huo)閥(fa)的(de)(de)外觀,防(fang)(fang)(fang)火(huo)(huo)閥(fa)應(ying)外觀完(wan)好(hao)無(wu)損,機械部(bu)分(fen)(fen)外表(biao)無(wu)銹蝕、變形或(huo)機械損傷(shang)。在(zai)(zai)其明(ming)顯部(bu)位設(she)置(zhi)永(yong)久性(xing)(xing)(xing)標(biao)牌,標(biao)明(ming)產(chan)品(pin)名稱、型號、規格、耐火(huo)(huo)性(xing)(xing)(xing)能及商(shang)標(biao)、生(sheng)產(chan)單位(制造商(shang))名稱和廠址、出(chu)日(ri)期及產(chan)品(pin)生(sheng)產(chan)批號、執行標(biao)準(zhun)等,內(nei)容清晰(xi),設(she)置(zhi)牢靠。防(fang)(fang)(fang)火(huo)(huo)閥(fa)的(de)(de)安裝(zhuang)位置(zhi)防(fang)(fang)(fang)火(huo)(huo)閥(fa)主要(yao)安裝(zhuang)在(zai)(zai)風(feng)管(guan)(guan)(guan)靠近防(fang)(fang)(fang)火(huo)(huo)分(fen)(fen)隔(ge)(ge)處(chu),暗裝(zhuang)時,安裝(zhuang)部(bu)位應(ying)設(she)置(zhi)方便(bian)維護的(de)(de)檢(jian)修口(kou)。具體檢(jian)查要(yao)求(qiu)為(wei):(1)通風(feng)、空(kong)(kong)調系統的(de)(de)風(feng)管(guan)(guan)(guan),在(zai)(zai)以下部(bu)位應(ying)設(she)置(zhi)公稱動作溫度為(wei)70℃的(de)(de)防(fang)(fang)(fang)火(huo)(huo)閥(fa):①穿(chuan)越(yue)防(fang)(fang)(fang)火(huo)(huo)分(fen)(fen)區(qu)處(chu);②穿(chuan)越(yue)通風(feng)、空(kong)(kong)調機房的(de)(de)房間隔(ge)(ge)墻(qiang)和樓(lou)板處(chu);③穿(chuan)越(yue)重要(yao)或(huo)火(huo)(huo)災危險性(xing)(xing)(xing)大的(de)(de)房間隔(ge)(ge)墻(qiang)和樓(lou)板處(chu);④穿(chuan)越(yue)防(fang)(fang)(fang)火(huo)(huo)分(fen)(fen)隔(ge)(ge)處(chu)的(de)(de)變形縫兩側;⑤豎(shu)向風(feng)管(guan)(guan)(guan)與(yu)每層(ceng)水(shui)平(ping)風(feng)管(guan)(guan)(guan)交接處(chu)的(de)(de)水(shui)平(ping)管(guan)(guan)(guan)段上(shang)。當建筑內(nei)每個防(fang)(fang)(fang)火(huo)(huo)分(fen)(fen)區(qu)的(de)(de)通風(feng)、空(kong)(kong)調系統均獨(du)立設(she)置(zhi)時,水(shui)平(ping)風(feng)管(guan)(guan)(guan)與(yu)豎(shu)向總管(guan)(guan)(guan)的(de)(de)交接處(chu)可不設(she)置(zhi)防(fang)(fang)(fang)火(huo)(huo)閥(fa)。(2)公共(gong)建筑的(de)(de)浴室、衛生(sheng)間和廚房的(de)(de)豎(shu)向排(pai)風(feng)管(guan)(guan)(guan),應(ying)采取(qu)防(fang)(fang)(fang)止回流措施,并宜在(zai)(zai)支管(guan)(guan)(guan)上(shang)設(she)置(zhi)防(fang)(fang)(fang)火(huo)(huo)閥(fa)。(3)公共(gong)建筑內(nei)廚房的(de)(de)排(pai)油煙管(guan)(guan)(guan)道,宜按(an)防(fang)(fang)(fang)火(huo)(huo)分(fen)(fen)區(qu)設(she)置(zhi),且在(zai)(zai)與(yu)豎(shu)向排(pai)風(feng)管(guan)(guan)(guan)連(lian)接的(de)(de)支管(guan)(guan)(guan)處(chu)應(ying)設(she)置(zhi)防(fang)(fang)(fang)火(huo)(huo)閥(fa)。
1、消聲性能:鍍鋅薄鋼板風管:無消聲性能,自身震動會產生聲音,必須加裝消聲器。無機玻璃鋼風管:無消聲性能,隔聲性能優于鍍鋅薄鋼板風管,必須加裝消聲器。復合玻纖板風管:其管壁是一種多孔性吸聲材料,可省去專用消聲器。纖維織物風管:其管壁為柔性纖維織物,風管廠家本身就是聲音的不良導體和吸收體,自身不會產生聲音,值得信賴的風管還(huan)可(ke)以一定(ding)程度上吸收設備噪聲,隨著管(guan)道的延長,效(xiao)果更(geng)為(wei)明顯,可(ke)省(sheng)去(qu)專(zhuan)用消聲器(qi)。2、保(bao)(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng):鍍(du)鋅薄鋼(gang)板(ban)風(feng)管(guan):導熱(re)(re)系數很大(為(wei)60.4 W/m?K),無保(bao)(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng),必須另外加(jia)包(bao)保(bao)(bao)(bao)(bao)溫(wen)(wen)層及保(bao)(bao)(bao)(bao)護(hu)層。無機(ji)玻(bo)璃(li)鋼(gang)風(feng)管(guan):導熱(re)(re)系數大(為(wei)0.5W/m?K),無保(bao)(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng)。復合玻(bo)纖板(ban)風(feng)管(guan):導熱(re)(re)系數小(平均溫(wen)(wen)度24℃時小于1W/m?K),有(you)一定(ding)保(bao)(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng),不加(jia)裝保(bao)(bao)(bao)(bao)溫(wen)(wen)。
防(fang)火(huo)閥(fa)(fa)是用(yong)來(lai)阻斷來(lai)自火(huo)災區(qu)的(de)煙氣及火(huo)焰通(tong)過,并在一定時間內能(neng)滿足耐火(huo)穩定性(xing)和(he)耐火(huo)完整(zheng)性(xing)要求的(de)閥(fa)(fa)門(men)。為了將(jiang)火(huo)災引起的(de)損失減(jian)少到(dao)(dao)小程(cheng)度,就(jiu)必須(xu)采(cai)取(qu)有效(xiao)的(de)防(fang)火(huo)、防(fang)排(pai)煙措施,以(yi)控制火(huo)勢蔓延,而防(fang)火(huo)閥(fa)(fa)在通(tong)風、空調及防(fang)排(pai)煙系(xi)統中的(de)合理(li)設置,則起到(dao)(dao)了重(zhong)要的(de)作(zuo)用(yong)。防(fang)火(huo)閥(fa)(fa)的(de)結(jie)構(gou)(gou)和(he)工作(zuo)原理(li),防(fang)火(huo)閥(fa)(fa)主要由閥(fa)(fa)體和(he)執行機(ji)(ji)(ji)構(gou)(gou)組(zu)成。閥(fa)(fa)體由殼體、法蘭、葉(xie)片(pian)(pian)及葉(xie)片(pian)(pian)聯動機(ji)(ji)(ji)構(gou)(gou)等組(zu)成。執行機(ji)(ji)(ji)構(gou)(gou)由外殼、葉(xie)片(pian)(pian)調節機(ji)(ji)(ji)構(gou)(gou)、離合器、溫度熔斷器等組(zu)成。防(fang)火(huo)閥(fa)(fa)的(de)執行機(ji)(ji)(ji)構(gou)(gou)是通(tong)過金屬易熔片(pian)(pian)和(he)離合器機(ji)(ji)(ji)構(gou)(gou)來(lai)控制葉(xie)片(pian)(pian)的(de)轉動。