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風(feng)(feng)機(ji)(ji)廣泛地應(ying)用(yong)(yong)(yong)于(yu)(yu)各個(ge)工業部門(men),一般講,離心式(shi)(shi)(shi)風(feng)(feng)機(ji)(ji)適用(yong)(yong)(yong)于(yu)(yu)小(xiao)流(liu)(liu)量、高壓力的場所,而軸流(liu)(liu)式(shi)(shi)(shi)風(feng)(feng)機(ji)(ji)則常用(yong)(yong)(yong)于(yu)(yu)大(da)流(liu)(liu)量、低壓力的情況,應(ying)根據不(bu)同的情況選有(you)不(bu)同的風(feng)(feng)機(ji)(ji)分類。1鍋(guo)(guo)爐(lu)(lu)用(yong)(yong)(yong)風(feng)(feng)機(ji)(ji),鍋(guo)(guo)爐(lu)(lu)用(yong)(yong)(yong)風(feng)(feng)機(ji)(ji)根據鍋(guo)(guo)爐(lu)(lu)的規(gui)格(ge)可選用(yong)(yong)(yong)離心式(shi)(shi)(shi)或軸流(liu)(liu)式(shi)(shi)(shi)。又按(an)它的作用(yong)(yong)(yong)分為鍋(guo)(guo)爐(lu)(lu)風(feng)(feng)機(ji)(ji)—向鍋(guo)(guo)爐(lu)(lu)內輸送空氣;鍋(guo)(guo)爐(lu)(lu)引風(feng)(feng)機(ji)(ji)把鍋(guo)(guo)爐(lu)(lu)內的煙氣抽走。2通風(feng)(feng)換氣用(yong)(yong)(yong)風(feng)(feng)機(ji)(ji),這類風(feng)(feng)機(ji)(ji)一般是(shi)供工廠及各種建筑物通風(feng)(feng)換氣及采(cai)暖(nuan)通風(feng)(feng)用(yong)(yong)(yong),要求(qiu)壓力不(bu)高,但噪(zao)聲要求(qiu)要低,可采(cai)用(yong)(yong)(yong)離心式(shi)(shi)(shi)或軸流(liu)(liu)式(shi)(shi)(shi)風(feng)(feng)機(ji)(ji)。
1) 送(song)風(feng),包括通氣(qi)(qi)(qi),如送(song)鮮(xian)風(feng)和排(pai)氣(qi)(qi)(qi),這(zhe)個范(fan)圍很廣,如工(gong)廠(chang)車(che)間(jian),生(sheng)(sheng)產場(chang)地(di)空(kong)(kong)氣(qi)(qi)(qi),由于有(you)害(hai)氣(qi)(qi)(qi)體產生(sheng)(sheng)需(xu)(xu)要(yao)(yao)排(pai)出室(shi)(shi)外,又需(xu)(xu)要(yao)(yao)把室(shi)(shi)外空(kong)(kong)氣(qi)(qi)(qi)輸(shu)送(song)至室(shi)(shi)內。這(zhe)時就要(yao)(yao)使(shi)用流量大(da)(da)而(er)壓力(li)小的(de)(de)(de)(de)空(kong)(kong)氣(qi)(qi)(qi)輸(shu)送(song)管(guan)(guan)(guan)道(dao),螺旋(xuan)(xuan)(xuan)風(feng)管(guan)(guan)(guan)就適(shi)用,一般(ban)情況下(xia)使(shi)用鍍鋅鐵管(guan)(guan)(guan),有(you)腐(fu)蝕性(xing)及(ji)特別潮濕場(chang)所使(shi)用不(bu)銹鋼(gang)管(guan)(guan)(guan)。2) 送(song)冷風(feng)。常(chang)見的(de)(de)(de)(de)是中央(yang)空(kong)(kong)調(diao)的(de)(de)(de)(de)管(guan)(guan)(guan)道(dao),這(zhe)種(zhong)管(guan)(guan)(guan)道(dao)需(xu)(xu)要(yao)(yao)加(jia)保溫材(cai)料(liao)。螺旋(xuan)(xuan)(xuan)風(feng)管(guan)(guan)(guan)可內貼保溫材(cai)料(liao),外表看(kan)來美觀。3) 排(pai)油(you)(you)煙(yan)。飯店、酒樓、賓館的(de)(de)(de)(de)廚房均有(you)大(da)(da)量油(you)(you)煙(yan)產生(sheng)(sheng),需(xu)(xu)要(yao)(yao)排(pai)出,使(shi)用圓形的(de)(de)(de)(de)風(feng)管(guan)(guan)(guan)就是油(you)(you)煙(yan)囪。在(zai)這(zhe)里,螺旋(xuan)(xuan)(xuan)風(feng)管(guan)(guan)(guan)該叫(jiao)做油(you)(you)煙(yan)管(guan)(guan)(guan)。4) 除(chu)塵。有(you)些(xie)工(gong)廠(chang)生(sheng)(sheng)產車(che)間(jian)很多(duo)塵埃,需(xu)(xu)要(yao)(yao)專門(men)的(de)(de)(de)(de)除(chu)塵裝置,其中量較(jiao)大(da)(da)的(de)(de)(de)(de)管(guan)(guan)(guan)道(dao),可使(shi)用螺旋(xuan)(xuan)(xuan)風(feng)管(guan)(guan)(guan)。5) 散裝物料(liao)輸(shu)送(song)。有(you)些(xie)工(gong)廠(chang)的(de)(de)(de)(de)生(sheng)(sheng)產過程中,需(xu)(xu)要(yao)(yao)輸(shu)送(song)松散的(de)(de)(de)(de)顆粒(li),特別是比(bi)重不(bu)大(da)(da)的(de)(de)(de)(de)如發泡塑料(liao)粒(li)之類的(de)(de)(de)(de)使(shi)用螺旋(xuan)(xuan)(xuan)風(feng)管(guan)(guan)(guan)造價低、效果好。
鑒于軸(zhou)流(liu)風(feng)(feng)(feng)機(ji)有紊流(liu)區(qu)的(de)(de)性能特(te)點,在(zai)選(xuan)型和(he)使用(yong)時,需要注意以下兩點:建議使用(yong)在(zai)空(kong)曠環(huan)境(jing)中(zhong)(zhong),軸(zhou)流(liu)風(feng)(feng)(feng)機(ji)的(de)(de)輸(shu)入功率(lv)隨系(xi)統靜(jing)壓(ya)的(de)(de)增(zeng)(zeng)(zeng)大(da)(da)而(er)增(zeng)(zeng)(zeng)大(da)(da),而(er)在(zai)紊流(liu)區(qu),輸(shu)入功率(lv)的(de)(de)增(zeng)(zeng)(zeng)大(da)(da)幅度會(hui)更大(da)(da)。因(yin)此,軸(zhou)流(liu)風(feng)(feng)(feng)機(ji)一般多應用(yong)在(zai)有較大(da)(da)空(kong)曠環(huan)境(jing)的(de)(de)場合下,可以使其工(gong)作(zuo)在(zai)靜(jing)壓(ya)較低(di)的(de)(de)環(huan)境(jing)下,降(jiang)低(di)功耗(hao),保(bao)證穩定性和(he)壽命。定期(qi)清理風(feng)(feng)(feng)道,當軸(zhou)流(liu)風(feng)(feng)(feng)機(ji)應用(yong)在(zai)較為封閉的(de)(de)風(feng)(feng)(feng)道系(xi)統中(zhong)(zhong)時,長期(qi)運行(xing)后風(feng)(feng)(feng)道中(zhong)(zhong)的(de)(de)積(ji)灰、垃(la)圾逐漸(jian)變多,會(hui)使風(feng)(feng)(feng)道內的(de)(de)靜(jing)壓(ya)逐漸(jian)增(zeng)(zeng)(zeng)加(jia),使得風(feng)(feng)(feng)機(ji)的(de)(de)運行(xing)工(gong)況點逐漸(jian)左(zuo)移。這(zhe)不僅會(hui)降(jiang)低(di)風(feng)(feng)(feng)機(ji)性能,更重要的(de)(de)是會(hui)增(zeng)(zeng)(zeng)加(jia)軸(zhou)流(liu)風(feng)(feng)(feng)機(ji)進(jin)入紊流(liu)區(qu)的(de)(de)風(feng)(feng)(feng)險(xian)。因(yin)此必須(xu)要定期(qi)清理風(feng)(feng)(feng)道,保(bao)證風(feng)(feng)(feng)機(ji)工(gong)況點不產生較大(da)(da)偏移。
一(yi)、通風(feng)(feng)與(yu)空調(diao)(diao)(diao)(diao)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)組(zu)(zu)(zu)成(cheng)(cheng)與(yu)類別(一(yi))通風(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)組(zu)(zu)(zu)成(cheng)(cheng),包(bao)括:進(jin)氣(qi)(qi)(qi)處理(li)(li)設(she)(she)備(bei)(bei)(bei),如(ru)空氣(qi)(qi)(qi)過濾設(she)(she)備(bei)(bei)(bei)、熱(re)濕(shi)處理(li)(li)設(she)(she)備(bei)(bei)(bei)和(he)(he)(he)空氣(qi)(qi)(qi)凈化(hua)(hua)設(she)(she)備(bei)(bei)(bei)等(deng)(deng);送(song)(song)風(feng)(feng)機或(huo)(huo)排(pai)(pai)風(feng)(feng)機;風(feng)(feng)道系(xi)(xi)(xi)統(tong)(tong),如(ru)風(feng)(feng)管(guan)、送(song)(song)風(feng)(feng)口(kou)、排(pai)(pai)風(feng)(feng)口(kou)、排(pai)(pai)氣(qi)(qi)(qi)罩等(deng)(deng);排(pai)(pai)氣(qi)(qi)(qi)處理(li)(li)設(she)(she)備(bei)(bei)(bei),如(ru)除塵器、有(you)(you)害氣(qi)(qi)(qi)體凈化(hua)(hua)設(she)(she)備(bei)(bei)(bei)、風(feng)(feng)帽等(deng)(deng)。2.通風(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)類別有(you)(you):(二)空調(diao)(diao)(diao)(diao)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)組(zu)(zu)(zu)成(cheng)(cheng)——空氣(qi)(qi)(qi)處理(li)(li)設(she)(she)備(bei)(bei)(bei)、熱(re)源(yuan)和(he)(he)(he)冷(leng)(leng)(leng)源(yuan)、空調(diao)(diao)(diao)(diao)風(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)、水(shui)系(xi)(xi)(xi)統(tong)(tong)、控(kong)制、調(diao)(diao)(diao)(diao)節(jie)裝置(1)空氣(qi)(qi)(qi)處理(li)(li)設(she)(she)備(bei)(bei)(bei):空氣(qi)(qi)(qi)加熱(re)或(huo)(huo)冷(leng)(leng)(leng)卻設(she)(she)備(bei)(bei)(bei)、空氣(qi)(qi)(qi)加濕(shi)或(huo)(huo)去濕(shi)設(she)(she)備(bei)(bei)(bei)和(he)(he)(he)空氣(qi)(qi)(qi)凈化(hua)(hua)設(she)(she)備(bei)(bei)(bei)等(deng)(deng);其(qi)作用是將送(song)(song)風(feng)(feng)空氣(qi)(qi)(qi)處理(li)(li)到一(yi)定的(de)(de)(de)(de)(de)(de)(de)狀(zhuang)態。(2)熱(re)源(yuan)和(he)(he)(he)冷(leng)(leng)(leng)源(yuan):常(chang)用的(de)(de)(de)(de)(de)(de)(de)熱(re)源(yuan)有(you)(you)提(ti)供熱(re)水(shui)或(huo)(huo)蒸(zheng)汽(qi)的(de)(de)(de)(de)(de)(de)(de)鍋爐、電加熱(re)器等(deng)(deng)。(3)空調(diao)(diao)(diao)(diao)風(feng)(feng)系(xi)(xi)(xi)統(tong)(tong):由風(feng)(feng)機和(he)(he)(he)風(feng)(feng)管(guan)系(xi)(xi)(xi)統(tong)(tong)組(zu)(zu)(zu)成(cheng)(cheng)。(4)水(shui)系(xi)(xi)(xi)統(tong)(tong):包(bao)括將冷(leng)(leng)(leng)凍水(shui)(或(huo)(huo)熱(re)水(shui))從(cong)制冷(leng)(leng)(leng)系(xi)(xi)(xi)統(tong)(tong)(或(huo)(huo)熱(re)源(yuan))輸送(song)(song)到空氣(qi)(qi)(qi)處理(li)(li)設(she)(she)備(bei)(bei)(bei)的(de)(de)(de)(de)(de)(de)(de)水(shui)系(xi)(xi)(xi)統(tong)(tong)和(he)(he)(he)制冷(leng)(leng)(leng)設(she)(she)備(bei)(bei)(bei)的(de)(de)(de)(de)(de)(de)(de)冷(leng)(leng)(leng)卻水(shui)系(xi)(xi)(xi)統(tong)(tong),由水(shui)泵和(he)(he)(he)水(shui)管(guan)系(xi)(xi)(xi)統(tong)(tong)組(zu)(zu)(zu)成(cheng)(cheng)。(5)控(kong)制、調(diao)(diao)(diao)(diao)節(jie)裝置:裝置的(de)(de)(de)(de)(de)(de)(de)作用是調(diao)(diao)(diao)(diao)節(jie)空調(diao)(diao)(diao)(diao)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)冷(leng)(leng)(leng)量、熱(re)量、風(feng)(feng)量等(deng)(deng),使(shi)空調(diao)(diao)(diao)(diao)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)工作適應空調(diao)(diao)(diao)(diao)工況(kuang)的(de)(de)(de)(de)(de)(de)(de)變化(hua)(hua),從(cong)而(er)將室內(nei)(nei)空氣(qi)(qi)(qi)狀(zhuang)況(kuang)控(kong)制在要(yao)求的(de)(de)(de)(de)(de)(de)(de)范(fan)圍內(nei)(nei)。
(1)風管布置應盡量采用沿墻壁鋪設的方法,這樣在終裝修時可形成凹凸頂結構,通風管道既保持了室內的凈高,又使風管得到屏蔽,可以起到較好的裝修效果;(2)風管在布置時應盡量短,彎頭不宜過多,轉角半徑不宜過小,并盡量避免管道突變徑,以減少沿程壓力的損失;(3)風管安裝時不應破壞原有建筑的結構,特別是承重結構;(4)風管穿過墻壁處,其孔洞四周的縫隙,推薦通風管道應(ying)(ying)使用彈性材(cai)料(liao)填充(chong)密(mi)實;(5)為了降低噪(zao)聲,風(feng)(feng)管(guan)(guan)的(de)(de)始(shi)端(與(yu)送風(feng)(feng)機(ji)連接處)不(bu)(bu)宜急彎,必要時,彎頭和(he)三(san)通(tong)支管(guan)(guan)等(deng)處應(ying)(ying)裝(zhuang)(zhuang)(zhuang)(zhuang)設(she)導(dao)流葉片;(6)風(feng)(feng)管(guan)(guan)的(de)(de)連接應(ying)(ying)嚴格按(an)照規(gui)范進(jin)行,粘(zhan)貼應(ying)(ying)牢固(gu)、鋪設(she)應(ying)(ying)平(ping)整、綁扎應(ying)(ying)緊密(mi),無滑動、松(song)弛與(yu)斷裂現象,防止漏冷(leng)(熱);(7)輸送易產生冷(leng)凝水(shui)空氣(qi)的(de)(de)風(feng)(feng)管(guan)(guan),一定要按(an)設(she)計要求的(de)(de)坡度安(an)裝(zhuang)(zhuang)(zhuang)(zhuang);(8)安(an)裝(zhuang)(zhuang)(zhuang)(zhuang)要牢固(gu),所有吊、支、托(tuo)架不(bu)(bu)得妨礙風(feng)(feng)口、閥門(men)、控制系統及檢查門(men)的(de)(de)操作,并作良好的(de)(de)防銹處理;(9)新風(feng)(feng)管(guan)(guan)安(an)裝(zhuang)(zhuang)(zhuang)(zhuang)除應(ying)(ying)遵守送風(feng)(feng)管(guan)(guan)道安(an)裝(zhuang)(zhuang)(zhuang)(zhuang)規(gui)定外,還應(ying)(ying)按(an)設(she)計要求作有坡度安(an)裝(zhuang)(zhuang)(zhuang)(zhuang)(坡向新風(feng)(feng)口);(10)新風(feng)(feng)口要有防雨和(he)過濾網(wang)罩,安(an)裝(zhuang)(zhuang)(zhuang)(zhuang)位置應(ying)(ying)選(xuan)在空氣(qi)不(bu)(bu)受污染的(de)(de)地方且便于檢修。