Kusankha choyenera mitundu ya fan ya centrifugal sizokhudzana ndi kufananitsa nambala yamakatalogu ndi dzina. Ndi za kuthetsa vuto lenileni—kusuntha mpweya polimbana ndi kukana, kugwira utsi wowononga, kupulumuka pa mitsinje ya 200 ° C, kapena kusunga mgodi wa malasha kuti ukhale ndi mpweya wabwino pansi paziopsezo zophulika. Takula, kuyesa, ndi kulamula mafani opitilira 1,200 kuyambira 2020-ndipo nthawi zonse, mtundu wolakwika udayambitsa kuchedwa, kusokoneza chitetezo, kapena kulephera msanga.
Chifukwa chiyani "Mtundu" Umakhala Wofunika Kwambiri Kuposa Kukula kapena Kuthamanga
9-19 high-pressure centrifugal blower imasuntha mpweya mosiyana ndi fan-inlet centrifugal fan-ngakhale RPM yofanana ndi kuthamanga kwa static. Kusiyanaku kuli mu impeller geometry, mapangidwe a casing, ndi njira yoyendetsera mpweya. Zopangira zokhota kumbuyo zimagwira gasi wodzaza fumbi popanda kutseka. Mayunitsi okhotakhota kutsogolo amapereka voliyumu yayikulu pakutsika kotsika-koma amalephera mwachangu m'malo ovuta. Ma radial-tip impellers amakhala pakati pawo: kuchita bwino pang'ono, kulolerana kwambiri ndi tinthu tating'onoting'ono, komanso kuphweka kwamakina komwe kumafunikira pakukonza m'malo akutali.
Nthawi ina tidasinthana ndi fan yomwe idalephera kutsogolo yokhotakhota mumzere wopaka utoto wansalu ndi mtundu wakumbuyo. Chigawo choyambirira chinatenga miyezi 4. Yatsopanoyo inatha miyezi 37—palibe chotengera m’malo, palibe kutsetsereka lamba, palibe kutsika kwa mpweya. Chifukwa chiyani? Chifukwa kugwiritsa ntchito kumafuna chipwirikiti chochepa, osati CFM yayikulu. Ndilo lamulo loyamba: kufananiza ndi mtundu ku ku khalidwe la airstream, osati tchati chabe.
Mitundu Inayi Yamafani a Centrifugal-ndi Pomwe Imalephera
Ogwiritsa ntchito mafakitale safuna magulu a maphunziro. Amafunika kuganiza bwino. Izi ndi zomwe zimagwira ntchito-ndipo mtundu uliwonse umasweka:
- Mafani okhotakhota kumbuyo (BC).: Yabwino kwambiri pamayendedwe okwera kwambiri, kutentha kwambiri, kapena kuwononga—monga milu ya desulfurization kapena mpweya woyamba wa boiler. Ma impeller amapindika kutali ndi kuzungulira. Kuchita bwino kumafika pa 82-87%. Koma amafuna kulumikiza kolowera kolondola; ductwork molakwika imayambitsa kugwedezeka komwe kumang'amba nyumba. Zitsanzo zathu za BC (mwachitsanzo, zotsutsana ndi dzimbiri zokhala ndi ma casings okutidwa ndi FRP) zimaphatikizanso ma cones olumikizana ndi laser ngati muyezo.
- Mafani a Forward-curved (FC).: Yang'ono, yabata, komanso yokwera kwambiri komanso yotsika kwambiri - yabwino kuti mupangitse mpweya wa HVAC kapena kuzunguliranso chipinda choyera. Koma amakhazikika mosavuta pamwamba pa 150 Pa static pressure. Tawona mayunitsi atatu a FC akulephera mumizere yobwezeretsanso zosungunulira zamafuta chifukwa oyendetsa adanyalanyaza kukwera kwamphamvu. Sanamangidwe chifukwa chokana kusinthasintha.
- Mafani a Radial-tip (RT).: Akavalo ogwirira ntchito yafumbi, yachinyontho, kapena yonyezimira pang'ono—kulowetsa mpweya mu migodi, kuziziritsa padenga, utsi wautsi wozungulira. Masamba amatambasulidwa mowongoka, osamangirira. Kuchita bwino kwapamwamba kwambiri (72-78%) kumagulitsidwa kuti ikhale yodalirika. Mu imodzi mwazitsulo zozizira za kasitomala, mafani a RT adadula nthawi yosakonzekera ndi 63% motsutsana ndi njira zina za BC.
- Mafani awiri a centrifugal: Zotulutsa ziwiri patsinde limodzi, zokoka mpweya kuchokera mbali zonse. Amapereka madzi oyenda bwino popanda duct asymmetry. Zofunika kwambiri pamene malo ali otsika koma mpweya uyenera kukhala wosasunthika - monga makonde olowera mpweya kapena makina opopera utsi okwera padenga. Komabe, amafunikira kuyika maziko olimba. Kusintha kwa maziko a 2 mm kudapangitsa kuti pulojekiti yaposachedwa imveke mpaka tidawonjezera zomangira za nangula zosameta ubweya.
Zomwe Khatalo silingakuuzeni
Ena angatsutse kuti kusankha zinthu kumangotengera mtundu wa impeller. Koma tawona mafani a titaniyamu omwe ali ndi kukana kwa dzimbiri bwino akulephera chifukwa cholowera chakumbuyo chokhotakhota sichimatha kunyamula phulusa la ntchentche. Mtundu umatanthauzira physics. Zinthu zimatanthauzira zenera lopulumuka.
Zowonadi zitatu zolimba kuchokera ku data yamunda:
- Mapiritsi amphamvu amanama. Kukupiza komwe kudavotera "12 kPa @ 25,000 m³/h" kumatengera malo abwino olowera. Zowongolera zenizeni zapadziko lonse lapansi, zothira madzi, ndi zosefera zimatsitsa magwiridwe antchito ndi 12-18%. Yesani nthawi zonse pamlingo wadongosolo-osati kungofanizira chabe.
- Chitsimikizo chosaphulika (monga dⅠ cha migodi ya malasha) chimagwira ntchito pagulu lonse—osati injini yokha. Galimoto yotsimikizika yotsekeredwa ku nyumba yosavomerezeka imalepheretsa kutsata. Kuphatikizika kwathu kwa mndandanda wa FBD kumaphatikizapo zoletsa zolimbana ndi spark ndi njira zokhazikika zotsimikizika pa GB 3836.1.
- Kulinganiza kwamphamvu sikosankha. Mafani a BC osakhazikika amanjenjemera pa 1,450 RPM. Pa 2,900 RPM, kusalinganika komweku kumachulukitsa mphamvu kanayi. Wokonda aliyense wa Hongcheng centrifugal amakumana ndi ISO 1940 G2.5 kusanja-kuyezedwa, osaganiziridwa.
Mmene Mungasankhire—Mndandanda Wachigawo wa Mphindi zisanu
Musanatsegule pepala, yankhani mafunso asanu awa:
- Ndi chiyani Kuthamanga kwa static kopitilira muyeso-osati pachimake, osati zongoyerekeza? Muyeseni ndi manometer pa cholowera cha fan, pansi pa katundu wambiri.
- Kodi mpweya uli ndi abrasives, chinyezi, kapena mankhwala? Ngati inde, chotsani kutsogolo kokhotakhota. Ikani patsogolo nsonga yozungulira kapena yokhotakhota kumbuyo yokhala ndi zokutira zoteteza.
- Ndi danga lalitali? Kulowetsa kwapawiri kumapulumutsa mapazi koma kumafuna kusasunthika kwamapangidwe. Cholowera chimodzi chokhala ndi cholowera chotalikirapo chingakhale chosavuta.
- Kodi ogwira ntchito adzasintha kayendedwe kake pafupipafupi? Zopangira kumbuyo zokhotakhota zimagwira bwino. Maulendo okhotakhota kutsogolo mosayembekezereka pansi pa liwiro la 60%.
- Ndi chiyani mtengo wolephera? Kutsekera m'nyumba yowotchera kumawononga $ 18,000 / ola. Lipirani kutsogolo kuti muyang'ane kumbuyo-kokhotakhota + kuphatikizika kwa kutentha - osati pambuyo pake kukonza mwadzidzidzi.
Mitundu ya fan ya centrifugal sizinthu zosinthika. Iwo ndi mayankho opangidwa ku zovuta zakuthupi. Sankhani mtundu womwe umalemekeza mpweya wanu, malo anu, ndi zolinga zanu za nthawi yowonjezera-osati yomwe ili ndi bulosha lowala kwambiri.
