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在(zai)(zai)空調(diao)送風系(xi)(xi)統中(zhong)(zhong),空調(diao)送風機送出(chu)的(de)風必須通(tong)過主干(gan)管(guan)分配到(dao)支管(guan)中(zhong)(zhong);在(zai)(zai)排(pai)(pai)煙(yan)系(xi)(xi)統中(zhong)(zhong),煙(yan)氣(qi)(qi)由支管(guan)到(dao)主干(gan)管(guan)后,進入排(pai)(pai)煙(yan)風機排(pai)(pai)出(chu)。當建筑(zhu)物內發生(sheng)火(huo)(huo)災時(shi),在(zai)(zai)通(tong)風、空調(diao)系(xi)(xi)統中(zhong)(zhong),為(wei)了防(fang)止火(huo)(huo)勢(shi)(shi)通(tong)過送風系(xi)(xi)統蔓延,當送風系(xi)(xi)統中(zhong)(zhong)氣(qi)(qi)體溫(wen)(wen)度達到(dao)70℃時(shi),防(fang)火(huo)(huo)閥(fa)(fa)(fa)機構上熔斷(duan)器(qi)動作(zuo),閥(fa)(fa)(fa)門(men)亦迅速關閥(fa)(fa)(fa),切斷(duan)煙(yan)氣(qi)(qi)與(yu)火(huo)(huo)勢(shi)(shi)沿風管(guan)蔓延的(de)通(tong)路。同樣,在(zai)(zai)排(pai)(pai)煙(yan)系(xi)(xi)統中(zhong)(zhong),發生(sheng)火(huo)(huo)災時(shi),排(pai)(pai)煙(yan)閥(fa)(fa)(fa)開啟,進行排(pai)(pai)煙(yan),為(wei)了截(jie)斷(duan)高溫(wen)(wen)煙(yan)氣(qi)(qi)在(zai)(zai)排(pai)(pai)煙(yan)管(guan)路中(zhong)(zhong)流動,防(fang)止火(huo)(huo)勢(shi)(shi)蔓延到(dao)另一防(fang)火(huo)(huo)分區,當排(pai)(pai)出(chu)的(de)煙(yan)氣(qi)(qi)溫(wen)(wen)度達到(dao)280℃時(shi),排(pai)(pai)煙(yan)防(fang)火(huo)(huo)閥(fa)(fa)(fa)、排(pai)(pai)煙(yan)口上熔斷(duan)器(qi)動作(zuo),閥(fa)(fa)(fa)門(men)必須自動關閉,阻止排(pai)(pai)煙(yan)。由此可見,防(fang)火(huo)(huo)閥(fa)(fa)(fa)、排(pai)(pai)煙(yan)閥(fa)(fa)(fa)做到(dao)了該通(tong)則通(tong),該斷(duan)則斷(duan)的(de)隔(ge)煙(yan)阻火(huo)(huo)作(zuo)用。
風(feng)(feng)機(ji)廣泛地(di)應用(yong)(yong)于各(ge)個工業部門,一般講(jiang),離(li)心(xin)(xin)式(shi)風(feng)(feng)機(ji)適(shi)用(yong)(yong)于小流(liu)量、高壓(ya)力的(de)(de)(de)(de)場所(suo),而軸流(liu)式(shi)風(feng)(feng)機(ji)則常(chang)用(yong)(yong)于大(da)流(liu)量、低壓(ya)力的(de)(de)(de)(de)情況,應根據(ju)不同的(de)(de)(de)(de)情況選有不同的(de)(de)(de)(de)風(feng)(feng)機(ji)分類。1鍋(guo)(guo)爐(lu)用(yong)(yong)風(feng)(feng)機(ji),鍋(guo)(guo)爐(lu)用(yong)(yong)風(feng)(feng)機(ji)根據(ju)鍋(guo)(guo)爐(lu)的(de)(de)(de)(de)規(gui)格可選用(yong)(yong)離(li)心(xin)(xin)式(shi)或軸流(liu)式(shi)。又按它的(de)(de)(de)(de)作(zuo)用(yong)(yong)分為鍋(guo)(guo)爐(lu)風(feng)(feng)機(ji)—向鍋(guo)(guo)爐(lu)內輸(shu)送空(kong)氣(qi);鍋(guo)(guo)爐(lu)引風(feng)(feng)機(ji)把(ba)鍋(guo)(guo)爐(lu)內的(de)(de)(de)(de)煙氣(qi)抽走。2通風(feng)(feng)換氣(qi)用(yong)(yong)風(feng)(feng)機(ji),這類風(feng)(feng)機(ji)一般是供工廠及各(ge)種(zhong)建筑物通風(feng)(feng)換氣(qi)及采(cai)暖(nuan)通風(feng)(feng)用(yong)(yong),要(yao)求壓(ya)力不高,但噪聲要(yao)求要(yao)低,可采(cai)用(yong)(yong)離(li)心(xin)(xin)式(shi)或軸流(liu)式(shi)風(feng)(feng)機(ji)。
在(zai)了解空(kong)調(diao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)的(de)(de)工(gong)作原理(li)之(zhi)前,先來認識(shi)下空(kong)調(diao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)的(de)(de)工(gong)作回路(lu)。空(kong)調(diao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)的(de)(de)工(gong)作回路(lu)分(fen)為蒸發(fa)(fa)(fa)(fa)區(qu)和冷(leng)(leng)(leng)(leng)凝(ning)區(qu),空(kong)調(diao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)在(zai)空(kong)調(diao)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)回路(lu)中(zhong)起壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)驅動(dong)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)的(de)(de)作用(yong)。空(kong)調(diao)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)時,中(zhong)央空(kong)調(diao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)把制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)從低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)區(qu)抽取來經緊縮(suo)(suo)(suo)(suo)后(hou)送到高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)區(qu)冷(leng)(leng)(leng)(leng)卻(que)凝(ning)結,經過(guo)散(san)熱片分(fen)發(fa)(fa)(fa)(fa)出(chu)熱量到空(kong)氣(qi)(qi)中(zhong),制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)也從氣(qi)(qi)態(tai)變成(cheng)液態(tai),壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)力升(sheng)高(gao)(gao)。制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)再(zai)(zai)從高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)區(qu)流(liu)向(xiang)低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)區(qu),經過(guo)毛細管放射到蒸發(fa)(fa)(fa)(fa)器(qi)中(zhong),壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)力驟降(jiang),液態(tai)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)(ji)立刻變成(cheng)氣(qi)(qi)態(tai),經過(guo)散(san)熱片吸收空(kong)氣(qi)(qi)中(zhong)大量的(de)(de)熱量。這樣循(xun)環(huan)應用(yong)就(jiu)完成(cheng)了制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)系統。壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)通過(guo)節流(liu)裝置節流(liu)之(zhi)后(hou),通入到蒸發(fa)(fa)(fa)(fa)器(qi)中(zhong),將所需要冷(leng)(leng)(leng)(leng)卻(que)的(de)(de)媒介冷(leng)(leng)(leng)(leng)卻(que)換熱。例如將蒸發(fa)(fa)(fa)(fa)器(qi)連(lian)接到樓(lou)里的(de)(de)各(ge)個房(fang)間(jian),蒸發(fa)(fa)(fa)(fa)器(qi)內的(de)(de)蛇(she)行(xing)管將同空(kong)氣(qi)(qi)進行(xing)換熱,再(zai)(zai)通過(guo)鼓風將冷(leng)(leng)(leng)(leng)氣(qi)(qi)吹向(xiang)房(fang)間(jian)的(de)(de)空(kong)氣(qi)(qi)當中(zhong)。而蒸發(fa)(fa)(fa)(fa)器(qi)蛇(she)行(xing)管內的(de)(de)冷(leng)(leng)(leng)(leng)凍劑(ji)(ji)換熱后(hou)變成(cheng)低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)蒸氣(qi)(qi)回到壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji),再(zai)(zai)被壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo)機(ji)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)縮(suo)(suo)(suo)(suo),這樣循(xun)環(huan)利用(yong)就(jiu)完成(cheng)了制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)系統。
風管主要指中央空調系統的通風管道,它常常被忽視,但卻是空調系統的重要組成部分,大渡口不銹鋼通風管道目前常見的風管主要有四種:1)鍍鋅薄鋼板風管;2)無機玻璃鋼風管;3)復合玻纖板風管;4)纖維織物風管。鍍鋅薄鋼板風管:早使用的風管,不銹鋼通風管道價格采用鍍鋅薄(bo)鋼板(ban)制作(zuo),適合含(han)濕量(liang)小的(de)一(yi)般(ban)性氣體的(de)輸送,有易(yi)生銹,無(wu)(wu)保溫和(he)(he)消聲功(gong)能(neng),制作(zuo)安裝(zhuang)周期長(chang)(chang)的(de)特點。無(wu)(wu)機玻璃鋼風(feng)管:較新的(de)風(feng)管類型,采用玻璃纖維(wei)增(zeng)強無(wu)(wu)機材料制作(zuo),遇火不燃、耐腐蝕、份量(liang)重,硬度大(da)但較脆,受(shou)自重影響易(yi)變形酥裂(lie),無(wu)(wu)保溫和(he)(he)消聲性能(neng),制作(zuo)安裝(zhuang)周期長(chang)(chang)。
1.通(tong)風(feng)、空氣調節系(xi)統(tong)的(de)(de)風(feng)管(guan)(guan)在(zai)下列部(bu)位應設置(zhi)(zhi)(zhi)公(gong)(gong)稱動作溫(wen)(wen)度為(wei)(wei)70℃的(de)(de)防(fang)(fang)(fang)(fang)火(huo)(huo)閥。①穿越(yue)防(fang)(fang)(fang)(fang)火(huo)(huo)分區(qu)處(chu)。②穿越(yue)通(tong)風(feng)空調機房的(de)(de)房間隔(ge)墻(qiang)和樓(lou)板處(chu)。③穿越(yue)重(zhong)要(yao)或火(huo)(huo)災(zai)危險性(xing)大(da)的(de)(de)場所的(de)(de)房間隔(ge)墻(qiang)和樓(lou)板處(chu)。④穿越(yue)防(fang)(fang)(fang)(fang)火(huo)(huo)分隔(ge)處(chu)的(de)(de)變形縫兩側。⑤豎(shu)向(xiang)風(feng)管(guan)(guan)與(yu)每層水(shui)平(ping)風(feng)管(guan)(guan)交接處(chu)的(de)(de)水(shui)平(ping)管(guan)(guan)段上(shang),當建(jian)(jian)(jian)筑內每個防(fang)(fang)(fang)(fang)火(huo)(huo)分區(qu)的(de)(de)通(tong)風(feng)、空氣調節系(xi)統(tong)均獨立設置(zhi)(zhi)(zhi)時(shi),水(shui)平(ping)風(feng)管(guan)(guan)與(yu)豎(shu)向(xiang)總管(guan)(guan)的(de)(de)交接處(chu)可(ke)不設置(zhi)(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)(huo)閥。2.公(gong)(gong)共建(jian)(jian)(jian)筑的(de)(de)浴室、衛生(sheng)間和廚(chu)房的(de)(de)豎(shu)向(xiang)排(pai)(pai)風(feng)管(guan)(guan),應采(cai)取防(fang)(fang)(fang)(fang)止(zhi)回流(liu)措施(shi)并宜在(zai)支(zhi)管(guan)(guan)上(shang)設置(zhi)(zhi)(zhi)公(gong)(gong)稱動作溫(wen)(wen)度為(wei)(wei)70℃的(de)(de)防(fang)(fang)(fang)(fang)火(huo)(huo)閥。公(gong)(gong)共建(jian)(jian)(jian)筑內廚(chu)房的(de)(de)排(pai)(pai)油(you)煙管(guan)(guan)道(dao)宜按防(fang)(fang)(fang)(fang)火(huo)(huo)分區(qu)設置(zhi)(zhi)(zhi),且在(zai)與(yu)豎(shu)向(xiang)排(pai)(pai)風(feng)管(guan)(guan)連接的(de)(de)支(zhi)管(guan)(guan)處(chu)應設置(zhi)(zhi)(zhi)公(gong)(gong)稱動作溫(wen)(wen)度為(wei)(wei)150℃的(de)(de)防(fang)(fang)(fang)(fang)火(huo)(huo)閥。 3.排(pai)(pai)煙防(fang)(fang)(fang)(fang)火(huo)(huo)閥(280℃)的(de)(de)設置(zhi)(zhi)(zhi)場所:①排(pai)(pai)煙管(guan)(guan)進(jin)入排(pai)(pai)風(feng)機房處(chu);②穿越(yue)防(fang)(fang)(fang)(fang)火(huo)(huo)分區(qu)的(de)(de)排(pai)(pai)煙管(guan)(guan)道(dao)上(shang);③排(pai)(pai)煙系(xi)統(tong)的(de)(de)支(zhi)管(guan)(guan)上(shang);