貴陽推薦鍍鋅通風管批發

確(que)(que)保通風(feng)(feng)(feng)效果：高(gao)(gao)(gao)溫(wen)(wen)(wen)消(xiao)防排(pai)煙(yan)風(feng)(feng)(feng)機的(de)使(shi)用介(jie)質本(ben)身溫(wen)(wen)(wen)度(du)相對(dui)較(jiao)高(gao)(gao)(gao)，且自(zi)身的(de)運(yun)轉也(ye)是(shi)(shi)會(hui)(hui)(hui)產生一定的(de)溫(wen)(wen)(wen)度(du)，若是(shi)(shi)將其放(fang)在(zai)密封(feng)環(huan)(huan)境(jing)中，那么很容(rong)易就會(hui)(hui)(hui)導(dao)致高(gao)(gao)(gao)溫(wen)(wen)(wen)現(xian)象發(fa)(fa)生，針(zhen)對(dui)于這(zhe)種情況在(zai)前期(qi)選擇安(an)裝環(huan)(huan)境(jing)時就應(ying)(ying)該(gai)(gai)要(yao)多注(zhu)意，好是(shi)(shi)能夠(gou)將其放(fang)在(zai)通風(feng)(feng)(feng)效果較(jiao)好的(de)環(huan)(huan)境(jing)中，通過(guo)對(dui)流(liu)(liu)運(yun)動來(lai)有效降(jiang)低溫(wen)(wen)(wen)度(du)，這(zhe)是(shi)(shi)可以(yi)有效的(de)防止(zhi)(zhi)高(gao)(gao)(gao)溫(wen)(wen)(wen)現(xian)象的(de)發(fa)(fa)生。確(que)(que)保電(dian)(dian)流(liu)(liu)大(da)小合適：消(xiao)防排(pai)煙(yan)風(feng)(feng)(feng)機的(de)使(shi)用還(huan)是(shi)(shi)要(yao)注(zhu)意電(dian)(dian)流(liu)(liu)問題，是(shi)(shi)應(ying)(ying)該(gai)(gai)要(yao)防止(zhi)(zhi)電(dian)(dian)流(liu)(liu)過(guo)大(da)現(xian)象發(fa)(fa)生，否則(ze)會(hui)(hui)(hui)讓(rang)在(zai)運(yun)行中會(hui)(hui)(hui)因(yin)為電(dian)(dian)流(liu)(liu)過(guo)大(da)而(er)產生較(jiao)多的(de)電(dian)(dian)阻(zu)，而(er)這(zhe)也(ye)是(shi)(shi)會(hui)(hui)(hui)導(dao)致高(gao)(gao)(gao)溫(wen)(wen)(wen)現(xian)象發(fa)(fa)生。因(yin)為高(gao)(gao)(gao)溫(wen)(wen)(wen)會(hui)(hui)(hui)直(zhi)接影響著消(xiao)防排(pai)煙(yan)風(feng)(feng)(feng)機的(de)使(shi)用，因(yin)此在(zai)日(ri)常使(shi)用中就應(ying)(ying)該(gai)(gai)要(yao)采取(qu)(qu)措施來(lai)有效的(de)防止(zhi)(zhi)高(gao)(gao)(gao)溫(wen)(wen)(wen)現(xian)象發(fa)(fa)生，且在(zai)高(gao)(gao)(gao)溫(wen)(wen)(wen)之后要(yao)采取(qu)(qu)措施來(lai)降(jiang)溫(wen)(wen)(wen)，以(yi)確(que)(que)保安(an)全。

一(yi)(yi)、通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)與空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統(tong)(tong)(tong)的組成與類別(bie)(bie)(一(yi)(yi))通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)的組成，包括：進氣(qi)(qi)處(chu)(chu)(chu)理(li)(li)設(she)(she)備(bei)(bei)(bei)(bei)，如空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)過濾設(she)(she)備(bei)(bei)(bei)(bei)、熱濕處(chu)(chu)(chu)理(li)(li)設(she)(she)備(bei)(bei)(bei)(bei)和(he)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)凈(jing)化設(she)(she)備(bei)(bei)(bei)(bei)等(deng)(deng)；送(song)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)或排(pai)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)；風(feng)(feng)(feng)(feng)(feng)道系(xi)(xi)統(tong)(tong)(tong)，如風(feng)(feng)(feng)(feng)(feng)管、送(song)風(feng)(feng)(feng)(feng)(feng)口、排(pai)風(feng)(feng)(feng)(feng)(feng)口、排(pai)氣(qi)(qi)罩等(deng)(deng)；排(pai)氣(qi)(qi)處(chu)(chu)(chu)理(li)(li)設(she)(she)備(bei)(bei)(bei)(bei)，如除(chu)塵器(qi)、有(you)害氣(qi)(qi)體凈(jing)化設(she)(she)備(bei)(bei)(bei)(bei)、風(feng)(feng)(feng)(feng)(feng)帽等(deng)(deng)。2．通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)的類別(bie)(bie)有(you)：(二)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統(tong)(tong)(tong)的組成——空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)處(chu)(chu)(chu)理(li)(li)設(she)(she)備(bei)(bei)(bei)(bei)、熱源(yuan)和(he)冷(leng)源(yuan)、空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)風(feng)(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)、水(shui)(shui)系(xi)(xi)統(tong)(tong)(tong)、控(kong)制、調(diao)(diao)節(jie)(jie)裝(zhuang)置(1)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)處(chu)(chu)(chu)理(li)(li)設(she)(she)備(bei)(bei)(bei)(bei)：空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)加熱或冷(leng)卻設(she)(she)備(bei)(bei)(bei)(bei)、空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)加濕或去濕設(she)(she)備(bei)(bei)(bei)(bei)和(he)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)凈(jing)化設(she)(she)備(bei)(bei)(bei)(bei)等(deng)(deng)；其作(zuo)用是將送(song)風(feng)(feng)(feng)(feng)(feng)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)處(chu)(chu)(chu)理(li)(li)到一(yi)(yi)定(ding)的狀態。(2)熱源(yuan)和(he)冷(leng)源(yuan)：常用的熱源(yuan)有(you)提供熱水(shui)(shui)或蒸汽(qi)的鍋(guo)爐、電加熱器(qi)等(deng)(deng)。(3)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)風(feng)(feng)(feng)(feng)(feng)系(xi)(xi)統(tong)(tong)(tong)：由風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)和(he)風(feng)(feng)(feng)(feng)(feng)管系(xi)(xi)統(tong)(tong)(tong)組成。(4)水(shui)(shui)系(xi)(xi)統(tong)(tong)(tong)：包括將冷(leng)凍(dong)水(shui)(shui)(或熱水(shui)(shui))從制冷(leng)系(xi)(xi)統(tong)(tong)(tong)(或熱源(yuan))輸送(song)到空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)處(chu)(chu)(chu)理(li)(li)設(she)(she)備(bei)(bei)(bei)(bei)的水(shui)(shui)系(xi)(xi)統(tong)(tong)(tong)和(he)制冷(leng)設(she)(she)備(bei)(bei)(bei)(bei)的冷(leng)卻水(shui)(shui)系(xi)(xi)統(tong)(tong)(tong)，由水(shui)(shui)泵和(he)水(shui)(shui)管系(xi)(xi)統(tong)(tong)(tong)組成。(5)控(kong)制、調(diao)(diao)節(jie)(jie)裝(zhuang)置：裝(zhuang)置的作(zuo)用是調(diao)(diao)節(jie)(jie)空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統(tong)(tong)(tong)的冷(leng)量(liang)、熱量(liang)、風(feng)(feng)(feng)(feng)(feng)量(liang)等(deng)(deng)，使空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統(tong)(tong)(tong)的工作(zuo)適應空(kong)(kong)(kong)(kong)(kong)(kong)調(diao)(diao)工況的變化，從而(er)將室內(nei)空(kong)(kong)(kong)(kong)(kong)(kong)氣(qi)(qi)狀況控(kong)制在要求的范圍內(nei)。

常用的消防排煙風機的結構型式有內冷卻電風葉輪的型式、吸入冷卻電機氣流的型式、前導加動葉型式的低速吸入冷卻風的消防排煙風機等，它們的特點和效果有所不同。 3.1內冷卻電風葉輪的型式,這種排煙風機主流道的煙氣溫度高可達到280℃，煙氣裝在電機上的葉輪輸送，再電機原來裝設冷卻葉輪的地方，鍍鋅通風管批發重新設計了用于冷卻電機的風扇，與機匣上開的進風口和出風口相連，推薦鍍鋅通風管并(bing)通(tong)(tong)過電(dian)(dian)機(ji)(ji)與風機(ji)(ji)輪組成的(de)(de)簡通(tong)(tong)道(dao)冷(leng)卻電(dian)(dian)機(ji)(ji)。此型式的(de)(de)電(dian)(dian)機(ji)(ji)冷(leng)卻通(tong)(tong)道(dao)可(ke)以保證(zheng)在(zai)主流(liu)(liu)通(tong)(tong)道(dao)的(de)(de)溫度(du)達(da)(da)到300℃時，機(ji)(ji)殼的(de)(de)溫度(du)可(ke)以保持在(zai)130℃左右，在(zai)此環境溫度(du)下，采(cai)用一般(ban)的(de)(de)絕(jue)緣等級的(de)(de)電(dian)(dian)機(ji)(ji)就(jiu)可(ke)以達(da)(da)到效果，沒(mei)有必要采(cai)用高溫的(de)(de)絕(jue)緣電(dian)(dian)機(ji)(ji)，從而(er)(er)可(ke)以大大的(de)(de)降低風機(ji)(ji)的(de)(de)制作(zuo)成本。這種型式的(de)(de)軸流(liu)(liu)消防(fang)電(dian)(dian)機(ji)(ji)的(de)(de)設計，國家(jia)鑒定已經下批，已經投入到生產當中，并(bing)且獲得了良好的(de)(de)經濟收益，目前是在(zai)進一步(bu)的(de)(de)研(yan)發和改造當中，從而(er)(er)能更好的(de)(de)提高工作(zuo)效率，降低制造成本。

消防(fang)(fang)(fang)排(pai)煙風(feng)機廠家(jia)產品由多個配(pei)件構(gou)成(cheng)，比如說葉輪、機殼、軸(zhou)承、主軸(zhou)等等構(gou)成(cheng)，而(er)不同(tong)(tong)的(de)配(pei)件也起著不同(tong)(tong)的(de)作(zuo)用(yong)。首先對(dui)于(yu)葉輪而(er)言，一般采(cai)用(yong)優質鍍鋅板制作(zuo)而(er)成(cheng)的(de)葉片，通(tong)(tong)(tong)(tong)過(guo)傾(qing)斜(xie)(xie)設計，與拉伸(shen)成(cheng)型的(de)前盤一起形成(cheng)了(le)更合理(li)的(de)流道(dao)(dao)(dao)(dao)，從而(er)保(bao)證了(le)葉輪的(de)高效(xiao)率。而(er)軸(zhou)承是(shi)帶鑄(zhu)造(zao)座的(de)外(wai)球面(mian)軸(zhou)承，可以通(tong)(tong)(tong)(tong)過(guo)外(wai)球面(mian)配(pei)合調整同(tong)(tong)軸(zhou)度的(de)誤差(cha)。主軸(zhou)一般采(cai)用(yong)45#鋼經調制處理(li)后精車而(er)成(cheng)，保(bao)證足(zu)夠的(de)光潔度和尺寸精。另外(wai)兩層(ceng)板內(nei)(nei)部填充(chong)消聲材(cai)料(liao)，能(neng)更有(you)效(xiao)隔熱降噪。消防(fang)(fang)(fang)排(pai)煙風(feng)機不能(neng)距離隧道(dao)(dao)(dao)(dao)的(de)邊壁太近(jin)，避免影(ying)響通(tong)(tong)(tong)(tong)風(feng)效(xiao)果。通(tong)(tong)(tong)(tong)風(feng)系統從安(an)全(quan)隧道(dao)(dao)(dao)(dao)向通(tong)(tong)(tong)(tong)過(guo)橫(heng)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)(dao)向事故隧道(dao)(dao)(dao)(dao)方(fang)向送風(feng)，抑制煙氣進入橫(heng)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)(dao)及未發生事故的(de)隧道(dao)(dao)(dao)(dao)，滿(man)足(zu)疏散(san)人員迎著新(xin)(xin)風(feng)進入橫(heng)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)(dao)和安(an)全(quan)隧道(dao)(dao)(dao)(dao)內(nei)(nei)，同(tong)(tong)時保(bao)證等待區域所需要的(de)新(xin)(xin)鮮空(kong)氣。充(chong)分利用(yong)定點救援站處的(de)斜(xie)(xie)井和隧道(dao)(dao)(dao)(dao)兩端的(de)消防(fang)(fang)(fang)排(pai)煙風(feng)機作(zuo)為(wei)送入新(xin)(xin)風(feng)和排(pai)煙的(de)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)(dao)，通(tong)(tong)(tong)(tong)風(feng)必須維持橫(heng)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)(dao)口處于(yu)正壓狀態，防(fang)(fang)(fang)止煙氣流向通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)(dao)內(nei)(nei)。

排(pai)(pai)煙閥是否存在(zai)(zai)常開的(de)？這里的(de)排(pai)(pai)煙閥也就相當(dang)于(yu)排(pai)(pai)煙口(kou)，對于(yu)常見(jian)的(de)板式排(pai)(pai)煙口(kou)與多葉排(pai)(pai)煙口(kou)，市場(chang)上(shang)常見(jian)的(de)均(jun)為常閉形(xing)式，一(yi)(yi)般不(bu)(bu)需(xu)(xu)要(yao)(yao)常開的(de)排(pai)(pai)煙口(kou)。對于(yu)排(pai)(pai)風(feng)(feng)(feng)(feng)兼排(pai)(pai)煙系(xi)統的(de)排(pai)(pai)煙口(kou)，可以(yi)采用“單層百葉 + 280 ℃ 電(dian)控(kong)排(pai)(pai)煙防(fang)(fang)火(huo)(huo)(huo)閥”進(jin)行(xing)控(kong)制。70 ℃防(fang)(fang)火(huo)(huo)(huo)閥的(de)應用場(chang)合(he)有哪些(xie)？防(fang)(fang)火(huo)(huo)(huo)閥應用場(chang)合(he)很多，在(zai)(zai)空(kong)(kong)調(diao)送(song)回風(feng)(feng)(feng)(feng)干管(guan)，通(tong)風(feng)(feng)(feng)(feng)風(feng)(feng)(feng)(feng)機(ji)進(jin)出口(kou)，風(feng)(feng)(feng)(feng)井入口(kou)，管(guan)道穿越防(fang)(fang)火(huo)(huo)(huo)分區 / 變(bian)形(xing)縫 / 重要(yao)(yao)房(fang)間 / 機(ji)房(fang) / 火(huo)(huo)(huo)災危險性(xing)大的(de)房(fang)間的(de)隔墻或(huo)樓板，垂直風(feng)(feng)(feng)(feng)管(guan)與每層水平(ping)風(feng)(feng)(feng)(feng)管(guan)連(lian)接處。等很多場(chang)合(he)都需(xu)(xu)要(yao)(yao)設置防(fang)(fang)火(huo)(huo)(huo)閥。 空(kong)(kong)調(diao)新風(feng)(feng)(feng)(feng)取風(feng)(feng)(feng)(feng)管(guan)是否需(xu)(xu)要(yao)(yao)安裝防(fang)(fang)火(huo)(huo)(huo)閥？一(yi)(yi)般不(bu)(bu)需(xu)(xu)要(yao)(yao)。特別是如果(guo)回風(feng)(feng)(feng)(feng)、送(song)風(feng)(feng)(feng)(feng)均(jun)安裝防(fang)(fang)火(huo)(huo)(huo)閥之后，新風(feng)(feng)(feng)(feng)取風(feng)(feng)(feng)(feng)口(kou)就沒有必要(yao)(yao)在(zai)(zai)安裝防(fang)(fang)火(huo)(huo)(huo)閥了(le)。并且一(yi)(yi)般取風(feng)(feng)(feng)(feng)口(kou)位于(yu)室(shi)外，且按(an)照規范要(yao)(yao)求與排(pai)(pai)煙口(kou)保持(chi)10 m以(yi)上(shang)的(de)水平(ping)距離或(huo)3 m以(yi)上(shang)的(de)垂直距離（ 排(pai)(pai)煙口(kou)在(zai)(zai)上(shang) ），一(yi)(yi)般煙氣不(bu)(bu)會從新風(feng)(feng)(feng)(feng)口(kou)進(jin)入空(kong)(kong)調(diao)，所(suo)以(yi)一(yi)(yi)般不(bu)(bu)需(xu)(xu)要(yao)(yao)安裝防(fang)(fang)火(huo)(huo)(huo)閥。

消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)機(ji)(ji)(ji)(ji)(ji)一(yi)(yi)般是采(cai)(cai)用離心式(shi)(shi)(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)和軸(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)(shi)(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)兩種(zhong)重要(yao)的(de)(de)型(xing)(xing)(xing)式(shi)(shi)(shi)(shi)。從(cong)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)風(feng)(feng)(feng)量、風(feng)(feng)(feng)壓考慮來看，消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)是高比轉高效(xiao)率的(de)(de)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)，更加的(de)(de)適合(he)選用軸(zhou)(zhou)流(liu)(liu)(liu)(liu)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)。軸(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)(shi)(shi)(shi)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)有兩種(zhong)設計型(xing)(xing)(xing)式(shi)(shi)(shi)(shi)，一(yi)(yi)種(zhong)為電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)與主(zhu)氣(qi)(qi)流(liu)(liu)(liu)(liu)分(fen)離型(xing)(xing)(xing)式(shi)(shi)(shi)(shi)，另一(yi)(yi)種(zhong)為電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)置于主(zhu)氣(qi)(qi)流(liu)(liu)(liu)(liu)之中。根據煙(yan)氣(qi)(qi)溫(wen)度(du)(du)(du)的(de)(de)不同(tong)，采(cai)(cai)用不同(tong)型(xing)(xing)(xing)式(shi)(shi)(shi)(shi)的(de)(de)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)，溫(wen)度(du)(du)(du)大于400℃時，采(cai)(cai)用電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)與主(zhu)氣(qi)(qi)流(liu)(liu)(liu)(liu)分(fen)離型(xing)(xing)(xing)式(shi)(shi)(shi)(shi)，溫(wen)度(du)(du)(du)小于400℃大于150℃，兩種(zhong)型(xing)(xing)(xing)式(shi)(shi)(shi)(shi)的(de)(de)電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)都可以選擇，在(zai)溫(wen)度(du)(du)(du)小于150℃的(de)(de)時候，采(cai)(cai)用電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)置于主(zhu)氣(qi)(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)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)的(de)(de)流(liu)(liu)(liu)(liu)量范圍從(cong)7200m？/h至110000m？/h，有不同(tong)型(xing)(xing)(xing)號(hao)的(de)(de)編制，用來滿(man)足(zu)(zu)不同(tong)通風(feng)(feng)(feng)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)流(liu)(liu)(liu)(liu)量的(de)(de)需(xu)求。消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)可以根據壓力情況的(de)(de)不同(tong)分(fen)為兩種(zhong)類(lei)型(xing)(xing)(xing)，一(yi)(yi)類(lei)為軸(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)(shi)(shi)(shi)消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)機(ji)(ji)(ji)(ji)(ji)，其(qi)各機(ji)(ji)(ji)(ji)(ji)號(hao)的(de)(de)壓力在(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)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)，各機(ji)(ji)(ji)(ji)(ji)號(hao)的(de)(de)壓力在(zai)1000Pa左右。為了(le)滿(man)足(zu)(zu)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)量和通風(feng)(feng)(feng)換氣(qi)(qi)的(de)(de)要(yao)求，消(xiao)(xiao)(xiao)防(fang)排(pai)(pai)(pai)(pai)(pai)(pai)煙(yan)風(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)一(yi)(yi)般都設計了(le)雙速(su)型(xing)(xing)(xing)的(de)(de)結(jie)構模式(shi)(shi)(shi)(shi)。低(di)速(su)可以通風(feng)(feng)(feng)使用，高速(su)可以排(pai)(pai)(pai)(pai)(pai)(pai)放煙(yan)霧，這(zhe)樣(yang)不但可以節約能源(yuan)同(tong)時又降低(di)了(le)噪聲污染。