Iintlobo ezimbini zeefeni eziqhelekileyo ezisetyenziswa kwiinkonzo zokwakha kwiinkqubo ezitsalwayo zibizwa ngokuqhelekileyo njenge-centrifugal kunye ne-axial fans - igama elisuka kwicala elichazayo lokuhamba komoya kwi-fan.Ezi ntlobo zimbini ngokwazo zihlulwe zibe ngamanani amancinci aphuhliswe ukubonelela ukuhamba kwevolumu / iimpawu zoxinzelelo, kunye nezinye iimpawu zokusebenza (kubandakanywa nobukhulu, ingxolo, ukungcangcazela, ukucoceka, ukugcinwa kunye nokuqina).

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Itheyibhile 1: I-US kunye neYurophu epapashiweyo yedatha ye-fan ye-fan ephezulu ye-fan> 600mm ububanzi

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Ezinye zezona ntlobo zixhaphakileyo zefeni ezisetyenziswa kwi-HVAC zidweliswe kwiTheyibhile 1, kunye nencopho ebonisa impumelelo ethe yaqokelelwa1 kwidatha epapashwe luluhlu lwabavelisi base-US nabaseYurophu.Ukongeza kwezi, fan 'yeplagi' (eyona nto yahlukileyo yefeni ye-centrifugal) ibone ukuthandwa okunyukayo kwiminyaka yakutshanje.

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Umzobo 1: Iigophe zefeni eziqhelekileyo.Abalandeli bokwenyani banokwahluka kakhulu kula magophe alula

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Iimpawu ze-fan curves zibonisiwe kuMfanekiso 1. Ezi zibaxiweyo, iigophe ezinqwenelekayo, kwaye abalandeli bokwenyani banokwahluka kakhulu kwezi;nangona kunjalo, banokubonisa iimpawu ezifanayo.Oku kubandakanya imimandla yokungazinzi okubangelwa kukuzingela, apho ifeni inokujika phakathi kweemitha ezimbini ezinokubakho kuxinzelelo olufanayo okanye ngenxa yokuma kwefeni (jonga Ukuma kwebhokisi yokuhamba komoya).Abavelisi kufuneka kwakhona bachonge iindidi zokusebenza ezikhethwayo 'ezikhuselekileyo' kuncwadi lwabo.

Abalandeli be-Centrifugal

Ngabalandeli be-centrifugal, umoya ungena kwi-impeller kunye ne-axis yayo, emva koko ikhutshwe ngokukhawuleza kwi-impeller kunye nentshukumo ye-centrifugal.Aba balandeli bayakwazi ukuvelisa zombini uxinzelelo oluphezulu kunye nokuhamba kwevolumu ephezulu.Uninzi lwabalandeli be-centrifugal bendabuko bavalelwe kwizindlu zohlobo lwe-scroll (njengakuMfanekiso 2) osebenza ukuqondisa umoya ohambayo kunye nokuguqula ngokufanelekileyo amandla e-kinetic kuxinzelelo olusisigxina.Ukuhambisa umoya omninzi, ifeni inokuyilwa nge-'double wide double inlet inlet' i-impeller, evumela umoya ukuba ungene macala omabini e-casing.

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Umzobo 2: Ifeni ye-Centrifugal kwibhokisi yokuskrola, ene-impeller ethambekele ngasemva

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Kukho inani leemilo zee-blades ezinokuthi zenze i-impeller, kunye neentlobo eziphambili ezigobileyo ngaphambili kunye ne-curved ngasemva - imilo ye-blade iya kugqiba ukusebenza kwayo, ukusebenza kakuhle kunye nokumila kwe-curve ye-fan fan.Ezinye izinto eziya kuchaphazela ukusebenza kakuhle kwe-fan bububanzi bevili le-impeller, indawo yokucima phakathi kwe-cone yokungena kunye ne-impeller ejikelezayo, kunye nommandla osetyenziselwa ukukhutshwa komoya ovela kwi-fan (indawo ebizwa ngokuba 'yindawo yokuqhuma') .

Olu hlobo lwefeni luqhutywa ngokwesiko yimoto enebhanti kunye nolungiselelo lwepulley.Nangona kunjalo, ngophuculo lolawulo lwesantya sombane kunye nokwanda kokufumaneka kweenjini ze-elektroniki ('EC' okanye i-brushless), ii-direct drives ziya zisetyenziswa rhoqo.Oku akususi kuphela ukungasebenzi kakuhle kwi-belt drive (enokuthi ibe nantoni na ukusuka kwi-2% ukuya ngaphezu kwe-10%, kuxhomekeke kwisondlo2) kodwa kunokwenzeka ukuba kunciphise ukungcangcazela, ukunciphisa ukugcinwa (iibheringi ezimbalwa kunye neemfuno zokucoca) kunye nokwenza indibano. ixinene ngakumbi.

Ngasemva egobile abalandeli be-centrifugal

Iifeni ezigobileyo ngasemva (okanye 'ezityekeleyo') ziphawulwa ziincakuba ezityekele kude kwicala lokujikeleza.Banokufikelela kubuchule bokufikelela kuma-90% xa besebenzisa iincakuba ze-aerofoil, njengoko kubonisiwe kuMfanekiso 3, okanye ngeencakuba ezicacileyo ezimile ngokwemilinganiselo emithathu, kwaye kancinane kancinane xa kusetyenziswa iincakuba ezigobileyo ezicacileyo, kwaye ngaphantsi kwakhona xa usebenzisa iincakuba ezilula ezisicaba ezibuyele ngasemva.Umoya ushiya iincam ze-impeller ngesantya esiphantsi, ngoko ke iilahleko zokukhuhlana ngaphakathi kwe-casing ziphantsi kwaye ingxolo evela emoyeni nayo iphantsi.Zisenokuthi xha ngokugqithisileyo kwigophe lokusebenza.Ii-impellers ezibanzi ngakumbi ziya kubonelela ngobuchule obukhulu, kwaye zinokusebenzisa ngokulula iincakuba zeprofayili ye-aerofoil.Ii-slim impellers ziya kubonisa inzuzo encinci ekusebenziseni i-aerofoil ngoko ke zivame ukusebenzisa iipleyiti ezisicaba.Iifeni ezigobile ngasemva ziphawulwa ngamandla abo okuvelisa uxinzelelo oluphezulu oludityaniswe nengxolo ephantsi, kwaye baneempawu zamandla ezingalayishwanga kakhulu- oku kuthetha ukuba njengoko ukuchasana kuncipha kwinkqubo kwaye ukuqukuqela konyusa amandla atsalwa yimoto yombane kuya kunciphisa. .Ulwakhiwo lweefeni ezigobileyo ezibuyela ngasemva kusenokwenzeka ukuba zomelele kwaye kunokuba nzima kunefeni egobileyo eya phambili.Isantya somoya esicothayo ngokwentelekiso ngaphaya kweencakuba zinokuvumela ukuqokelelana kwezinto ezingcolisayo (ezinjengothuli kunye negrisi).

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Umzobo 3: Umzobo we-centrifugal fan impellers

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Phambili egobile abalandeli be-centrifugal

Iifeni ezigobileyo eziya phambili ziphawulwa linani elikhulu leencakuba ezigobileyo ngaphambili.Njengoko ziqhele ukuvelisa uxinzelelo olusezantsi, zincinci, zikhaphukhaphu kwaye zinexabiso eliphantsi kunefan egotywe ngasemva elinganayo.Njengoko kuboniswe kwi-Figure 3 kunye ne-4, olu hlobo lwe-fan impeller luya kubandakanya ii-20-plus blades ezinokuthi zibe lula njengoko zenziwe kwiphepha elilodwa letsimbi.Ukusebenza okuphuculweyo kufunyanwa kubukhulu obukhulu ngeencakuba ezenziwe ngabanye.Umoya ushiya iingcebiso ze-blade kunye nesantya esiphezulu se-tangential, kwaye le mandla e-kinetic kufuneka iguqulwe ibe yingcinezelo ye-static kwi-casing - oku kuphazamisa ukusebenza kakuhle.Ngokuqhelekileyo zisetyenziselwa umthamo womoya ophantsi ukuya ophakathi kuxinzelelo oluphantsi (ngokuqhelekileyo <1.5kPa), kwaye zinokusebenza okuphantsi okungaphantsi kwe-70%.I-scroll casing ibaluleke kakhulu ukufezekisa ukusebenza kakuhle, njengoko umoya ushiya incam yeencakuba kwisantya esiphezulu kwaye usetyenziselwa ukuguqula ngokufanelekileyo amandla e-kinetic kuxinzelelo lwe-static.Zibaleka ngesantya esisezantsi sokujikeleza kwaye, kungoko, amanqanaba engxolo eyenziwe ngoomatshini athande ukuba ngaphantsi kunesantya esiphezulu sabalandeli abagobileyo ababuyela ngasemva.Ifeni ineempawu zamandla okulayisha ngaphezulu xa isebenza ngokuchasene nochaso lwenkqubo ephantsi.

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Umzobo 4: Phambili igophe le-centrifugal fan enenjini edibeneyo

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Ezi feni azifanelekanga apho, ngokomzekelo, umoya ungcoliswe kakhulu luthuli okanye uthwele amathontsi egrisi.

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Umzobo 5: Umzekelo wefeni yeplagi eqhutywa ngokuthe ngqo enamacangca ajika ngasemva

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I-Radial bladed centrifugal fans

I-radial bladed fan ye-centrifugal inenzuzo yokukwazi ukuhambisa amasuntswana omoya ongcolileyo kunye noxinzelelo oluphezulu (ngomyalelo we-10kPa) kodwa, iqhutywe ngesantya esiphezulu, inomsindo kakhulu kwaye ingasebenzi (<60%) kwaye akufanelekanga isetyenziselwa injongo jikelele HVAC.Ikwanengxaki yokulayisha ngaphezulu kweempawu zamandla - njengoko ukuxhathisa kwenkqubo kuncitshiswa (mhlawumbi ngokuvula umthamo wokulawula umthamo), amandla emoto aya kunyuka kwaye, ngokuxhomekeke kubungakanani benjini, anokuthi 'alayishe ngaphezulu'.

Iifeni zeplagi

Esikhundleni sokuxhonywa kwi-scroll casing, ezi zigxininisi ze-centrifugal eziyilelwe zinokusetyenziswa ngokuthe ngqo kwi-casing yeyunithi yokuphatha umoya (okanye, ngokwenene, kuwo nawuphi na umbhobho okanye i-plenum), kwaye iindleko zabo zokuqala zinokuthi zibe ngaphantsi kunoko. yahlala abalandeli be-centrifugal.Ezaziwa njenge 'plenum', 'iplagi' okanye ngokulula 'unhoused' iifeni centrifugal, ezi zinokubonelela ngeendawo ezithile uncedo kodwa ngexabiso ukulahleka ukusebenza ngokusulungekileyo (ngeyona mpumelelo ifana naleyo yokuhlaliswa phambili centrifugal fans curved).Iifeni ziya kutsala umoya nge-cone yokungena (ngendlela efanayo nefeni egcinwe endlwini) kodwa emva koko bakhuphe umoya ngokujikeleza yonke i-360 ° yesangqa sangaphandle se-impeller.Banokubonelela ngokuguquguquka okukhulu koqhagamshelo lwe-outlet (ukusuka kwi-plenum), oku kuthetha ukuba kunokubakho isidingo esincinci sokugoba okukufutshane okanye utshintsho olubukhali kumbhobho onokuthi wongezelele kwi-drop pressure yenkqubo (kwaye, ngenxa yoko, amandla ongezelelweyo a fan).Ukusebenza kwenkqubo ngokubanzi kunokuphuculwa ngokusebenzisa ukungena komlomo wentsimbi kwimibhobho eshiya iplenum.Enye yeenzuzo zefeni yeplagi kukuphucula ukusebenza kwayo kwe-acoustic, ubukhulu becala isiphumo sokufunxa isandi ngaphakathi kweplenum kunye nokungabikho kwendlela 'yokubona ngokuthe ngqo' ukusuka kwi-impeller ukuya emlonyeni we-ductwork.Ukusebenza kakuhle kuya kuxhomekeka kakhulu kwindawo yefeni ngaphakathi kweplenum kunye nobudlelwane befeni kwindawo yayo yokuphuma - iplenum isetyenziselwa ukuguqula amandla e-kinetic emoyeni kwaye oko konyusa uxinzelelo oluzinzileyo.Ukusebenza okwahlukileyo kakhulu kunye nozinzo olwahlukeneyo lokusebenza kuya kuxhomekeka kuhlobo lwe-impeller - izishukumisi zokuqukuqela ezixubeneyo (ezibonelela ngendibaniselwano yeradial kunye ne-axial flow) zisetyenziselwe ukoyisa iingxaki zokuqukuqela okuvela kwipateni eyomeleleyo yokuhamba komoya yeradial eyenziwe kusetyenziswa i-centrifugal impellers3.

Kwiiyunithi ezincinci, uyilo lwazo oludibeneyo luhlala luncediswa ngokusetyenziswa kweenjini ze-EC ezilawulekayo.

abalandeli beAxial

Kwi-axial flow fans, umoya udlula kwi-fan ngokuhambelana ne-axis of rotation (njengoko kuboniswe kwi-tube axial fan elula ye-Figure 6) - i-pressurisation eyenziwa yi-aerodynamic lift (efana nephiko lendiza).Ezi zinokubumbana ngokuthelekisayo, iindleko eziphantsi kunye nezikhaphukhaphu, zifaneleke ngakumbi ukuhamba komoya ngokuchasene noxinzelelo oluphantsi, ngoko ke zisetyenziswa rhoqo kwiinkqubo zokukhupha apho uxinzelelo lwehla lungaphantsi kuneenkqubo zokubonelela - unikezelo oluqhelekileyo lubandakanya ukuhla koxinzelelo lwazo zonke iimeko zomoya. amacandelo kwiyunithi yokuphatha umoya.Xa umoya ushiya i-axial fan elula, iya kujikeleza ngenxa yokujikeleza okunikezelwe emoyeni njengoko idlula kwi-impeller - ukusebenza kwefeni kunokuphuculwa kakhulu nge-downstream guide vanes ukubuyisela i-swirl, njengokuba kwi-vane. I-axial fan eboniswe kwi-Figure 7. Ukusebenza kakuhle kwe-axial fan kuchaphazeleka ngokuma kwe-blade, umgama phakathi kwencam ye-blade kunye necala elijikelezileyo, kunye nokubuyiswa kwe-swirl.I-pitch ye-blade inokutshintshwa ukuze itshintshe ngokufanelekileyo imveliso yefeni.Ngokubuyisela umva ukujikeleza kwabalandeli be-axial, ukuhamba komoya kunokuphinda kuguqulwe - nangona ifeni iya kuyilwa ukuba isebenze kwicala eliphambili.

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Umzobo 6: I-tube axial flow fan

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I-curve yeempawu zabalandeli be-axial inommandla we-stall onokuthi ubenze bangafaneleki kwiinkqubo ezinoluhlu olubanzi lweemeko zokusebenza, nangona zinenzuzo ye-non-loading power character.

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Umzobo 7: I-vane axial flow fan

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Abalandeli be-Vane axial banokusebenza njengabalandeli be-centrifugal ngasemva, kwaye bayakwazi ukuvelisa ukuhamba okuphezulu kuxinzelelo olufanelekileyo (ngokuqhelekileyo malunga ne-2kPa), nangona kunokwenzeka ukuba benze ingxolo eninzi.

I-fan flow flow exutyiweyo luphuhliso lwefeni ye-axial kwaye, njengoko kubonisiwe kuMfanekiso 8, ine-conical shaped impeller apho umoya utsalwa nge-radially ngokusebenzisa imijelo eyandiswayo kwaye emva koko idluliselwe nge-axial ngokusebenzisa i-vanes yesikhokelo sokuqondisa.Isenzo esidityanisiweyo sinokuvelisa uxinzelelo oluphezulu kakhulu kunokuba kunokwenzeka kunye nabanye abalandeli be-axial flow.Ukusebenza kunye nemigangatho yengxolo inokufana naleyo yefeni ye-centrifugal engasemva.

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Umzobo 8: I-mixed flow inline fan

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Ukufakwa kwefeni

Iinzame zokubonelela ngesisombululo esisebenzayo sabalandeli zinokujongelwa phantsi kakhulu kubudlelwane phakathi kwefeni kunye neendlela ezidityanisiweyo zomoya.

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Ixesha lokuposa: Jan-07-2022