排煙風機廠家 軸流排煙風機
一、按(an)氣體流(liu)動方向的不同(tong),通風機主要(yao)分為離心式(shi)(shi)、軸流(liu)式(shi)(shi)、斜流(liu)式(shi)(shi)等(deng)類型(xing)。
排(pai)煙(yan)風機廠家(jia) 軸流排(pai)煙(yan)風機
離(li)心通(tong)(tong)(tong)風(feng)機(ji)(ji)(ji)動(dong)(dong)力(li)(li)機(ji)(ji)(ji)(主(zhu)要是(shi)電動(dong)(dong)機(ji)(ji)(ji))驅動(dong)(dong)葉(xie)(xie)輪在(zai)蝸形機(ji)(ji)(ji)殼內(nei)旋轉,空氣(qi)(qi)經吸氣(qi)(qi)口從葉(xie)(xie)輪中心處吸入。由(you)于葉(xie)(xie)片(pian)對氣(qi)(qi)體的(de)(de)動(dong)(dong)力(li)(li)作用,氣(qi)(qi)體壓(ya)力(li)(li)和速度得以提(ti)高。氣(qi)(qi)體在(zai)離(li)心力(li)(li)作用下沿著葉(xie)(xie)道(dao)甩向機(ji)(ji)(ji)殼,從排(pai)氣(qi)(qi)口排(pai)出。氣(qi)(qi)體在(zai)葉(xie)(xie)輪內(nei)的(de)(de)流(liu)動(dong)(dong)主(zhu)要是(shi)在(zai)徑向平面內(nei),故(gu)又稱徑流(liu)通(tong)(tong)(tong)風(feng)機(ji)(ji)(ji)。離(li)心通(tong)(tong)(tong)風(feng)機(ji)(ji)(ji)主(zhu)要由(you)葉(xie)(xie)輪和機(ji)(ji)(ji)殼組(zu)成(圖1)。小型(xing)(xing)通(tong)(tong)(tong)風(feng)機(ji)(ji)(ji)的(de)(de)葉(xie)(xie)輪直接裝在(zai)電動(dong)(dong)機(ji)(ji)(ji)上;中、大型(xing)(xing)通(tong)(tong)(tong)風(feng)機(ji)(ji)(ji)通(tong)(tong)(tong)過聯軸(zhou)器或皮帶輪與(yu)電動(dong)(dong)機(ji)(ji)(ji)聯接。葉(xie)(xie)輪經靜平衡或動(dong)(dong)平衡校正(zheng)才能保(bao)證通(tong)(tong)(tong)風(feng)機(ji)(ji)(ji)平穩(wen)地轉動(dong)(dong)。按葉(xie)(xie)片(pian)出口方向的(de)(de)不同,葉(xie)(xie)輪分為前向、徑向和后向3種型(xing)(xing)式(shi)(圖2)。
軸流(liu)通(tong)風(feng)機(ji)當動力(li)機(ji)驅動葉輪在(zai)(zai)圓筒形機(ji)殼內(nei)旋(xuan)轉時,氣體從集流(liu)器(qi)進(jin)入,通(tong)過(guo)葉輪獲得能量(liang),提高(gao)壓力(li)和速(su)度,然(ran)后沿軸向排出(圖(tu)3)。軸流(liu)通(tong)風(feng)機(ji)的布(bu)置形式(shi)有立式(shi)、臥式(shi)和傾斜式(shi) 3種。小(xiao)型(xing)的葉輪直(zhi)徑只有100毫米左右,大型(xing)的可達 20米以(yi)上。小(xiao)型(xing)低壓軸流(liu)通(tong)風(feng)機(ji)由葉輪、機(ji)殼和集流(liu)器(qi)等部(bu)件(jian)組成,通(tong)常(chang)安裝在(zai)(zai)建筑物的墻壁(bi)或天花(hua)板上。大型(xing)高(gao)壓軸流(liu)通(tong)風(feng)機(ji)由集流(liu)器(qi)、葉輪、流(liu)線體、機(ji)殼、擴散筒和傳動部(bu)件(jian)組成。葉片越多(duo),風(feng)壓越高(gao)。 葉片安裝角一般為10°~45°。安裝角越大,風(feng)量(liang)和風(feng)壓越大。
斜流(liu)(liu)通(tong)(tong)風(feng)(feng)機(ji)(ji)又稱混(hun)流(liu)(liu)通(tong)(tong)風(feng)(feng)機(ji)(ji)。在這類通(tong)(tong)風(feng)(feng)機(ji)(ji)中,氣(qi)體以與軸線成(cheng)某一角度的方向進(jin)入葉(xie)輪(lun),在葉(xie)道(dao)中獲得能量,并沿傾斜方向流(liu)(liu)出(圖4)。通(tong)(tong)風(feng)(feng)機(ji)(ji)的葉(xie)輪(lun)和(he)機(ji)(ji)殼的形狀為圓錐形。這種通(tong)(tong)風(feng)(feng)機(ji)(ji)兼有離心式(shi)和(he)軸流(liu)(liu)式(shi)的特點,流(liu)(liu)量范圍(wei)和(he)效率均(jun)介于兩(liang)者之間(jian)。
二、按壓力分類
1.低壓離心(xin)通(tong)風(feng)機(ji):風(feng)機(ji)進(jin)口為標準(zhun)大(da)氣條件(jian),通(tong)風(feng)機(ji)全壓PtF≤1kPa的離心(xin)通(tong)風(feng)機(ji)。
2.中壓離(li)心通(tong)風(feng)機:風(feng)機進口為標準大(da)氣條(tiao)件,通(tong)風(feng)機全壓為1kPa<PtF<3kPa的離(li)心通(tong)風(feng)機。
3.高(gao)壓(ya)離心(xin)通風(feng)機:風(feng)機進口為標準(zhun)大氣條(tiao)件,通風(feng)機全壓(ya)為3kPa<PtF<15kPa的離心(xin)通風(feng)機。
4.低壓(ya)軸流通(tong)(tong)風機:風機進口為標準大氣條件,通(tong)(tong)風機全壓(ya)為PtF≤0.5kPa的軸流通(tong)(tong)風機。
5.高壓軸流通(tong)風(feng)機(ji):風(feng)機(ji)進口為(wei)(wei)標(biao)準大氣條件,通(tong)風(feng)機(ji)全壓為(wei)(wei)0.5kPa<PtF<15kPa的軸流通(tong)風(feng)機(ji)。
三、按比例大小分類
比(bi)轉(zhuan)速(su)是指要達(da)到(dao)單位流量和壓(ya)力所需的轉(zhuan)速(su)。
1.低比(bi)轉(zhuan)速(su)通風機(ns=11~30)2.中比(bi)轉(zhuan)速(su)通風機(ns=30~60)3.高比(bi)轉(zhuan)速(su)通風機(ns=60~81)
四、按用途分類
排煙風(feng)機廠家 軸流排煙風(feng)機
按(an)通風(feng)機的(de)用(yong)(yong)途(tu)分(fen)類,可(ke)分(fen)為引風(feng)機、紡織風(feng)機、消防排煙(yan)風(feng)機等。通風(feng)機的(de)用(yong)(yong)途(tu)一(yi)般(ban)以漢語拼音字頭代表
工作原理
通風機(ji)的工作(zuo)原理與透平(ping)壓縮(suo)機(ji)基本相(xiang)同,只(zhi)是(shi)由于氣(qi)體流速(su)較低(di),壓力變化不(bu)大,一般不(bu)需要(yao)考慮(lv)氣(qi)體比容的變化,即把氣(qi)體作(zuo)為不(bu)可壓縮(suo)流體處理。
排(pai)煙風(feng)機廠家 軸流排(pai)煙風(feng)機
通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)與風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)的(de)關系:風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)是(shi)(shi)我國(guo)對氣體壓(ya)縮和(he)氣體輸送機(ji)(ji)械(xie)的(de)習慣簡稱,通(tong)(tong)常所說的(de)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)包括(kuo)(kuo)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji),鼓(gu)(gu)(gu)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji),壓(ya)縮機(ji)(ji)以及羅茨鼓(gu)(gu)(gu)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji),但(dan)是(shi)(shi)不包括(kuo)(kuo)活塞(sai)壓(ya)縮機(ji)(ji)等容(rong)積(ji)式鼓(gu)(gu)(gu)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)和(he)壓(ya)縮機(ji)(ji)。通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)是(shi)(shi)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)的(de)一種(zhong)產品類型,但(dan)人(ren)們(men)通(tong)(tong)常把通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)筒(tong)叫為風(feng)(feng)(feng)(feng)(feng)機(ji)(ji),既通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)是(shi)(shi)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)的(de)另外一種(zhong)叫法。
排(pai)煙風(feng)機廠家 軸流排(pai)煙風(feng)機