Izinhlobo ezimbili ezivamile zamafeni ezisetshenziswa ezinsizakalweni zokwakha zezinhlelo ezixhunywe emithonjeni ngokuvamile zibizwa ngokuthi amafeni e-centrifugal kanye ne-axial - igama elivela ohlangothini oluchazayo lokugeleza komoya ngefeni. Lezi zinhlobo ezimbili ngokwazo zihlukaniswe zaba izinhlobo eziningana ezithuthukiswe ukuze zinikeze izici ezithile zokugeleza/ukucindezela kwevolumu, kanye nezinye izici zokusebenza (kufaka phakathi usayizi, umsindo, ukudlidliza, ukuhlanzeka, ukugcinwa kanye nokuqina).

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Ithebula 1: Idatha yokusebenza kahle kwabalandeli eshicilelwe e-US naseYurophu yabalandeli abangaphezu kuka-600mm ububanzi

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Ezinye zezinhlobo zefeni ezivame ukutholakala ezisetshenziswa ku-HVAC zibhalwe kuThebula 1, kanye nokusebenza kahle okuphezulu okuqoqwe1 kusuka kudatha eshicilelwe abakhiqizi abahlukahlukene base-US naseYurophu. Ngaphezu kwalokhu, ifeni 'ye-plug' (empeleni eyinhlobo yefeni ye-centrifugal) ibone ukuthandwa okwandayo eminyakeni yamuva nje.

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Umfanekiso 1: Ama-fan curve ajwayelekile. Abalandeli bangempela bangahluka kakhulu kula ma-curve alula

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Ama-fan curve ahlukile aboniswe kuMfanekiso 1. Lawa ama-curve eqisiwe, ahlelwe kahle, futhi abalandeli bangempela bangahluka kakhulu kulawa; noma kunjalo, kungenzeka babonise izimfanelo ezifanayo. Lokhu kufaka phakathi izindawo zokungazinzi okubangelwa ukuzingela, lapho ifeni ingaphenduka phakathi kwamazinga okugeleza amabili okungenzeka ngengcindezi efanayo noma ngenxa yokuma kwefeni (bheka ibhokisi lokuhamba komoya). Abakhiqizi kufanele futhi bahlonze amabanga okusebenza 'aphephile' akhethwayo ezincwadini zabo.

Abalandeli be-Centrifugal

Ngabalandeli be-centrifugal, umoya ungena ku-impeller nge-axis yawo, bese ukhishwa ngomsindo kusuka ku-impeller ngokunyakaza kwe-centrifugal. Laba balandeli bayakwazi ukukhiqiza kokubili ukucindezela okuphezulu kanye namazinga aphezulu okugeleza. Iningi labalandeli be-centrifugal bendabuko livalelwe endlini yohlobo lokuskrola (njengokuseMfanekisweni 2) esebenza ukuqondisa umoya ohambayo futhi iguqule ngempumelelo amandla e-kinetic abe yingcindezi engaguquki. Ukuze kushukunyiswe umoya omningi, ifeni ingaklanywa nge-impeller 'ephindwe kabili yokungena kabili', evumela umoya ukuthi ungene kuzo zombili izinhlangothi ze-casing.

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Umfanekiso 2: Ifeni ye-Centrifugal efakwe ebhokisini lokuskrola, ene-impeller ebheke emuva

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Kunezinhlobo eziningi zezimila ezingakha i-impeller, kanti izinhlobo eziyinhloko zigobile phambili futhi zigobile emuva – ukuma kwe-blade kuzonquma ukusebenza kwayo, ukusebenza kahle okungenzeka kanye nesimo se-fan curve ephawulekayo. Ezinye izici ezizothinta ukusebenza kahle kwe-fan ububanzi besondo le-impeller, isikhala sokuvuleka phakathi kwe-inlet cone kanye ne-impeller ejikelezayo, kanye nendawo esebenzise ukukhishwa komoya kusuka ku-fan (okubizwa ngokuthi 'indawo yokuqhuma').

Lolu hlobo lwefeni luvame ukuqhutshwa yimoto enebhande kanye ne-pulley. Kodwa-ke, ngokuthuthukiswa kokulawulwa kwesivinini se-elekthronikhi kanye nokutholakala okwandisiwe kwama-motor ashintshiwe ngogesi ('EC' noma angenamabhulashi), ama-direct drive asetshenziswa kaningi. Lokhu akususi nje kuphela ukungasebenzi kahle okukhona ku-belt drive (okungaba yinoma yini kusukela ku-2% kuya ngaphezu kuka-10%, kuye ngokugcinwa2) kodwa futhi kungenzeka kunciphise ukudlidliza, kunciphise ukulungiswa (ama-bearings ambalwa kanye nezidingo zokuhlanza) futhi kwenze ukuhlanganiswa kube kuncane kakhulu.

Amafeni e-centrifugal agobile angemuva

Amafeni agobile (noma 'athambekele') abonakala ngama-blade athambekele kude nendlela yokujikeleza. Angafinyelela ukusebenza kahle okungama-90% uma usebenzisa ama-aerofoil blades, njengoba kuboniswe kuMfanekiso 3, noma ngama-blade alula abunjwe ngobukhulu obuthathu, futhi anciphe kancane uma usebenzisa ama-blade agobile alula, futhi anciphe futhi uma usebenzisa ama-blade alula aqonde emuva. Umoya ushiya iziqongo ze-impeller ngesivinini esiphansi, ngakho-ke ukulahlekelwa kokungqubuzana ngaphakathi kwe-casing kuphansi futhi umsindo okhiqizwa umoya nawo uphansi. Angase ame emaphethelweni e-operating curve. Ama-impeller abanzi kakhulu azohlinzeka ngokusebenza kahle okukhulu, futhi angasebenzisa kalula ama-blade amakhulu ane-aerofoil profiled. Ama-impeller amancane azobonisa inzuzo encane ekusebenziseni ama-aerofoil ngakho-ke avame ukusebenzisa ama-blade e-flat plate. Amafeni agobile angemuva aphawuleka kakhulu ngamandla awo okukhiqiza ukucindezela okuphezulu kuhlanganiswe nomsindo ophansi, futhi anesici samandla esingagcwalisi ngokweqile - lokhu kusho ukuthi njengoba ukumelana kuncipha ohlelweni futhi izinga lokugeleza landa amandla adonswa yimoto kagesi azoncipha. Ukwakhiwa kwamafeni agobile emuva cishe kuzoba namandla kakhulu futhi kube nzima kakhulu kunefeni egobile phambili engasebenzi kahle. Ijubane lomoya elihamba kancane lomoya phakathi kwama-blades lingavumela ukunqwabelana kwezinto ezingcolisayo (njengothuli namafutha).

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Umfanekiso 3: Umfanekiso wama-impellers e-centrifugal fan

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Amafeni e-centrifugal agobile phambili

Amafeni agobile phambili abonakala ngenani elikhulu lama-blade agobile phambili. Njengoba evame ukukhiqiza ukucindezela okuphansi, mancane, alula futhi ashibhile kunefeni eligobile emuva elinamandla alinganayo. Njengoba kuboniswe kuMfanekiso 3 kanye noMfanekiso 4, lolu hlobo lwe-fan impeller luzofaka ama-blade angaphezu kuka-20 angaba lula njengokwakhiwa kusuka eshidini elilodwa lensimbi. Ukusebenza kahle okuthuthukisiwe kutholakala ngobukhulu obukhulu ngama-blade akhiwe ngamanye. Umoya ushiya iziqongo zama-blade ngesivinini esikhulu se-tangential, futhi la mandla e-kinetic kumele aguqulwe abe yingcindezi engaguquki ekhasejini - lokhu kunciphisa ukusebenza kahle. Ngokuvamile asetshenziselwa amavolumu omoya aphansi kuya kwaphakathi ngokucindezela okuphansi (ngokuvamile <1.5kPa), futhi abe nokusebenza kahle okuphansi okungaphansi kuka-70%. I-scroll casing ibaluleke kakhulu ukuze kufezwe ukusebenza kahle kakhulu, njengoba umoya ushiya isihloko sama-blade ngesivinini esiphezulu futhi usetshenziselwa ukuguqula ngempumelelo amandla e-kinetic abe yingcindezi engaguquki. Asebenza ngesivinini esiphansi sokujikeleza futhi, ngakho-ke, amazinga omsindo akhiqizwa ngomshini avame ukuba ngaphansi kwabalandeli abagobile emuva ngesivinini esiphezulu. Ifeni inesici samandla okulayisha ngokweqile lapho isebenza ngokumelene nokumelana okuphansi kwesistimu.

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Umfanekiso 4: Ifeni ye-centrifugal egobile phambili enenjini ehlanganisiwe

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Lawa mafeni awafaneleki lapho, isibonelo, umoya ungcoliswe kakhulu uthuli noma unamaconsi amafutha afakwe ngaphakathi.

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Umfanekiso 5: Isibonelo sefeni yepulagi eqhutshwa ngqo enama-blade agobile emuva

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Abalandeli be-centrifugal abane-radial blades

Ifeni ye-centrifugal ene-radial blade inenzuzo yokukwazi ukuhambisa izinhlayiya zomoya ezingcolisiwe kanye nokucindezela okuphezulu (ngokulandelana kwe-10kPa) kodwa, isebenza ngesivinini esiphezulu, inomsindo kakhulu futhi ayisebenzi kahle (<60%) ngakho-ke akufanele isetshenziselwe i-HVAC ejwayelekile. Iphinde ibe nenkinga yamandla okulayisha ngokweqile - njengoba ukumelana kwesistimu kuncipha (mhlawumbe ngokuvula kwama-dampers okulawula ivolumu), amandla enjini azokhuphuka futhi, kuye ngobukhulu benjini, angase 'alayishe ngokweqile'.

Amafeni epulagi

Esikhundleni sokufakwa ekhesini lokuskrola, lawa ma-impeller e-centrifugal aklanyelwe injongo angasetshenziswa ngqo ekhesini leyunithi yokuphatha umoya (noma, empeleni, kunoma iyiphi i-duct noma i-plenum), futhi izindleko zawo zokuqala cishe ziphansi kunezifeni ze-centrifugal ezigcinwe. Ezaziwa ngokuthi 'i-plenum', 'i-plug' noma nje 'ezingena-house' izifeni ze-centrifugal, lezi zinganikeza izinzuzo zesikhala kodwa ngentengo yokusebenza kahle okulahlekile (ngokusebenza kahle kakhulu kufana nalokho kwabalandeli be-centrifugal abagobile phambili). Amafeni azodonsa umoya nge-inlet cone (ngendlela efanayo nefeni egcinwe) kodwa bese ekhipha umoya ngokukhanya nxazonke kwendilinga yonke yangaphandle engu-360° ye-impeller. Anganikeza ukuguquguquka okukhulu kokuxhumeka kwe-outlet (kusuka ku-plenum), okusho ukuthi kungase kube nesidingo esincane sokugoba okuseduze noma ukuguquka okubukhali kuma-ductwork okuzokwengeza ngokwako ekwehleni kwengcindezi yesistimu (futhi, ngenxa yalokho, amandla engeziwe e-fan). Ukusebenza kahle kwesistimu iyonke kungathuthukiswa ngokusebenzisa ukungena kwe-bell mouth kuma-ducts ashiya i-plenum. Enye yezinzuzo zefeni yepulaki ukusebenza kwayo okuthuthukisiwe kwe-acoustic, okubangelwa kakhulu ukumuncwa komsindo ngaphakathi kwe-plenum kanye nokuntuleka kwezindlela 'zokubona ngqo' ezivela ku-impeller ziye emlonyeni we-ductwork. Ukusebenza kahle kuzoncika kakhulu endaweni yefeni ngaphakathi kwe-plenum kanye nobudlelwano befeni nendawo yayo yokukhipha - i-plenum esetshenziselwa ukuguqula amandla e-kinetic emoyeni ngakho-ke yandisa ingcindezi engaguquki. Ukusebenza okuhlukile kakhulu kanye nokuqina okuhlukile kokusebenza kuzoncika ohlotsheni lwe-impeller - ama-impeller okugeleza axubile (ahlinzeka ngenhlanganisela yokugeleza kwe-radial kanye ne-axial) asetshenziswe ukunqoba izinkinga zokugeleza ezivela kuphethini yokugeleza komoya enamandla e-radial edalwe kusetshenziswa ama-impeller alula e-centrifugal3.

Kumayunithi amancane, ukwakheka kwawo okufushane kuvame ukuhambisana nokusebenzisa ama-motor e-EC alawuleka kalula.

Abalandeli be-Axial

Kubalandeli bokugeleza kwe-axial, umoya udlula kufeni ngokuhambisana ne-axis yokujikeleza (njengoba kuboniswe kufeni elula ye-axial ye-tube ku-Figure 6) - ukucindezela okukhiqizwa yi-aerodynamic lift (efana nephiko lendiza). Lokhu kungaba kuncane kakhulu, kubize kancane futhi kulula, kufaneleke kakhulu ukuhambisa umoya ngokumelene nokucindezela okuphansi, ngakho-ke kuvame ukusetshenziswa ezinhlelweni zokukhipha lapho ukwehla kokucindezela kuphansi kunezinhlelo zokuhlinzeka - ukunikezwa kuvame ukufaka ukwehla kokucindezela kwazo zonke izingxenye zomoya opholile kuyunithi yokuphatha umoya. Lapho umoya ushiya fan elula ye-axial, uzojikeleza ngenxa yokujikeleza okunikezwa emoyeni njengoba udlula ku-impeller - ukusebenza kwefeni kungathuthukiswa kakhulu ngama-vane aqondisayo aphansi ukuze kubuyiselwe i-swirl, njengakufeni ye-axial ye-vane eboniswe ku-Figure 7. Ukusebenza kahle kwefeni ye-axial kuthinteka ukuma kwe-blade, ibanga eliphakathi kwesihloko se-blade kanye necala elizungezile, kanye nokubuyiselwa kwe-swirl. Iphimbo le-blade lingashintshwa ukuze kushintshe ngempumelelo umkhiqizo wefeni. Ngokubuyisela emuva ukujikeleza kwamafeni ajikelezayo, ukuhamba komoya nakho kungabuyiselwa emuva - yize ifeni izoklanywa ukuthi isebenze ngendlela eyinhloko.

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Umfanekiso 6: Ifeni yokugeleza kwe-axial yeshubhu

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Ijika eliyisici lamafeni e-axial linendawo yokuma engawenza angafaneleki ezinhlelweni ezinezimo zokusebenza ezahlukahlukene kakhulu, yize zinenzuzo yesici samandla esingagcwalisi ngokweqile.

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Umfanekiso 7: Ifeni yokugeleza kwe-axial ye-vane

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Amafeni e-axial e-Vane angasebenza kahle njengabalandeli be-centrifugal abagobile emuva, futhi ayakwazi ukukhiqiza ukugeleza okuphezulu ngokucindezela okufanelekile (ngokuvamile cishe ama-2kPa), yize kungenzeka ukuthi adale umsindo owengeziwe.

Ifeni yokugeleza exubile iyintuthuko yefeni ye-axial futhi, njengoba kuboniswe kuMfanekiso 8, ine-impeller enomumo oyindilinga lapho umoya udonswa khona ngemisebe ngeziteshi ezikhulayo bese udlula nge-axial nge-vanes yokuqondisa eqondile. Isenzo esihlangene singadala ingcindezi ephezulu kakhulu kunalokho okungenzeka ngezinye izifeni zokugeleza kwe-axial. Ukusebenza kahle kanye namazinga omsindo kungafana nalawo efeni ye-centrifugal ejika emuva.

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Umfanekiso 8: Ifeni egeleza ngaphakathi komugqa oxubile

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Ukufakwa kwefeni

Imizamo yokuhlinzeka ngesisombululo esisebenzayo sefeni ingase yonakaliswe kakhulu ubudlelwano phakathi kwefeni nemizila yendawo evulekile yomoya.

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Isikhathi sokuthunyelwe: Jan-07-2022