Iwo maviri akajairika mafani emhando anoshandiswa mukuvaka masevhisi emadhizaini masisitimu anowanzo kunzi centrifugal uye axial mafeni - zita rinobva kune inotsanangura nzira yekuyerera kwemhepo kuburikidza nefani.Mhando mbiri idzi dzakapatsanurwa kuita akati wandei ma subtypes akagadzirwa kuti ape humwe vhoriyamu kuyerera / kudzvanywa hunhu, pamwe nehumwe hunhu hwekushanda (kusanganisira saizi, ruzha, kudedera, kuchena, kuchengetedza uye kusimba).

---

Tafura 1: US neEurope yakaburitsa peak fan kunyatsoita data yevateveri> 600mm mudhayamita

---

Mamwe emhando dzinowanzo sangana dzemafani anoshandiswa muHVAC akanyorwa muTebhura 1, pamwe chete nezviratidzo zvepamusoro zvakaunganidzwa1 kubva kune data rakaburitswa neakasiyana eUS neEuropean vagadziri.Pamusoro peizvi, iyo 'plug' fan (iyo inonyatso mutsauko weiyo centrifugal fan) yaona mukurumbira uchiwedzera mumakore achangopfuura.

---

Mufananidzo 1: Generic fan curves.Mafeni chaiwo anogona kusiyana zvakanyanya kubva kune aya akarerutswa macurve

---

Characteristic fan curves inoratidzwa muFigure 1. Aya akawedzeredza, akakwenenzverwa macurves, uye mafeni chaiwo anogona kusiyana kubva kune izvi;zvisinei, ivo vanogona kuratidza hunhu hwakafanana.Izvi zvinosanganisira nzvimbo dzekusagadzikana dzinokonzerwa nekuvhima, uko feni inokwanisa kufambisa pakati pemafashama maviri anogona kuyerera panguva imwe chete yekumanikidza kana semhedzisiro yekumira kwe fan (ona Kumira kwebhokisi rekuyerera kwemhepo).Vagadziri vanofanirwawo kuona nzvimbo dzakasarudzika dzekushanda 'dzakachengeteka' mumabhuku avo.

Centrifugal fans

Iine centrifugal mafeni, mhepo inopinda impeller pamwe neaxis yayo, zvino inoburitswa radially kubva kune impeller ine centrifugal kufamba.Aya mafeni anokwanisa kugadzira ese ari maviri akanyanya kudzvanywa uye yakakwirira vhoriyamu inoyerera.Ruzhinji rwechinyakare centrifugal mafeni akavharirwa mupumburu mhando dzimba (sepaMufananidzo 2) iyo inoshanda kutungamira mhepo inofamba uye nekunyatso shandura iyo kinetic simba kuita static pressure.Kufambisa mhepo yakawanda, feni inogona kugadzirwa ine 'double width double inlet' impeller, inobvumira mweya kupinda kumativi ose ebhokisi.

---

Mufananidzo 2: Centrifugal feni mune mipumburu casing, ine kumashure yakarerekera impeller

---

Kune akati wandei maumbirwo emablades anogona kugadzira iyo impeller, nemhando huru dziri kumberi dzakakomberedzwa uye kumashure curved - chimiro cheblade chinotarisa kuita kwayo, kugona kugona uye chimiro chehunhu fan curve.Zvimwe zvinhu zvinozokanganisa kushanda kwefani hupamhi hwevhiri remhepo, nzvimbo yekuchenesa pakati peinopinza cone uye inotenderera inotenderedza, uye nzvimbo yakashandisa kuburitsa mhepo kubva kune fan (iyo inonzi 'blast nzvimbo') .

Rudzi urwu rwefani yagara ichityairwa nemota ine bhandi uye pulley kuronga.Nekudaro, nekuvandudzwa kwemagetsi ekumhanya kudzora uye nekuwedzera kuwanikwa kwemagetsi commutated ('EC' kana brushless) mota, madhiraivha akananga ari kunyanya kushandiswa.Izvi hazvingobvisi kusakwana kuri mubhanhire dhiraivha (inogona kunge iri chero chinhu kubva pa2% kusvika kupfuura 10%, zvichienderana nekugadzirisa2) asi zvakare inogona kuderedza kudedera, kuderedza kuchengetedza (mabhengi mashoma uye kuchenesa zvinodiwa) uye kugadzira gungano. more compact.

Backward curved centrifugal fans

Kumashure kwakakomberedzwa (kana kuti 'kurerekera') mafeni anoratidzwa nemablades anorerekera kure nekwainotenderera.Vanokwanisa kusvika pakuita basa rekuenda ku90% kana vachishandisa mashizha emhepo, sezvinoratidzwa mumufananidzo 3, kana nemashizha akajeka akaumbwa mumativi matatu, uye zvishoma zvishoma kana uchishandisa mashizha akakombama, uye zvishoma zvakare paunenge uchishandisa mashizha akareruka akafuratira.Mhepo inosiya matipi e impeller pane yakaderera velocity, saka kurasikirwa kwekukwesha mukati mecasing kwakadzikira uye ruzha rwemhepo rwakaderera zvakare.Vanogona kumira pakunyanyisa kweiyo curve yekushandisa.Zvine mwero mapellers achapa hukuru hukuru, uye anogona nyore kushandisa akawedzera aerofoil profiled blades.Slim impellers icharatidza kubatsirwa kushoma kubva pakushandisa aerofoils saka anowanzo kushandisa flat plate blades.Mafeni akakomberedzwa ekumashure anonyanya kuzivikanwa nekugona kwavo kuburitsa madhindindi akasanganiswa neruzha rwakaderera, uye ane hunhu husiri hwekuremedza simba - izvi zvinoreva kuti sezvo kupokana kunodzikira muhurongwa uye kuyerera kunowedzera simba rinodhonzwa nemotokari yemagetsi kunoderedza. .Kuvakwa kwemafeni akakomberedzwa kumashure kungangove kwakasimba uye kuri kuremerwa kupfuura kusashanda kumberi kwakakomberedzwa fan.Iko kunonoka kwemhepo yemhepo kuyambuka mashizha kunogona kubvumira kuunganidzwa kwezvinosvibisa (zvakadai seguruva negirisi).

---

Mufananidzo 3: Mufananidzo we centrifugal fan impellers

---

Forward curved centrifugal fans

Forward curved fans inoratidzwa nenhamba huru yemberi curved blades.Sezvo ivo vachiwanzo gadzira yakaderera madhindindi, idiki, yakareruka uye yakachipa pane yakaenzana powered kumashure yakakomberedzwa fan.Sezvinoratidzwa mumufananidzo 3 uye Mufananidzo 4, rudzi urwu rwe fan impeller ruchabatanidza 20-pamwe blades iyo inogona kunge iri nyore sekugadzirwa kubva kune imwechete simbi pepa.Mamiriro akavandudzwa anowanikwa muhukuru hukuru nechero akaumbwa blades.Mhepo inosiya matipi eblade ine yakakwira tangential velocity, uye iyi kinetic simba inofanirwa kushandurwa kuita static pressure mucasing - izvi zvinokanganisa kushanda.Iwo anowanzo shandiswa kune yakaderera kusvika pakati pemhepo mavhoriyamu pakumanikidzwa kwakaderera (kazhinji <1.5kPa), uye ane yakaderera kushanda kwepasi pe70%.Iyo scroll casing inonyanya kukosha kuti ibudirire zvakanyanya, sezvo mhepo ichisiya muromo weblades payakakwira velocity uye inoshandiswa kunyatso shandura iyo kinetic simba kuita static pressure.Dzinomhanya nekumhanya kwakaderera uye, nekudaro, mazinga eruzha anogadzirwa nemakanika anowanzo kuve mashoma pane akakwira-kumhanyisa kumashure akakomberedzwa mafeni.Iyo fan ine yakawandisa simba hunhu kana uchishanda uchipesana nekushomeka kwesystem.

---

Mufananidzo 4: Forward curved centrifugal fan ine integral motor

---

Aya mafeni haana kukodzera uko, semuenzaniso, mhepo yakasvibiswa zvakanyanya neguruva kana kutakura madonhwe egirisi akaiswa.

---

Mufananidzo 5: Muenzaniso weiyo yakananga inotyairwa plug fan ine kumashure akakomberedzwa mablades

---

Radial bladed centrifugal mafeni

Iyo radial bladed centrifugal fan ine bhenefiti yekukwanisa kufambisa zvimedu zvemweya zvakasvibiswa uye pakumanikidza kwakanyanya (muhurongwa hwe10kPa) asi, ichimhanya nekumhanya kwakanyanya, ine ruzha uye isingashande (<60%) uye saka haifanirwe kuve. inoshandiswa kune zvakajairika HVAC.Iyo zvakare inotambura nekuremedza simba hunhu - sezvo sisitimu kuramba ichidzikiswa (pamwe nevhoriyamu yekudzora madhamu kuvhurwa), simba remota rinosimuka uye, zvichienderana nesaizi yemota, inogona 'kuwandisa'.

Plug mafeni

Panzvimbo pekuiswa mubhokisi remupumburu, izvi zvinogadzirwa nechinangwa-centrifugal impellers zvinogona kushandiswa zvakananga mucasing yeair-handling unit (kana, zvechokwadi, mune chero duct kana plenum), uye mutengo wavo wekutanga ungangove wakaderera pane. vakagara centrifugal fans.Zvinozivikanwa se'plenum', 'plug' kana kungoti 'unhoused' centrifugal mafeni, izvi zvinogona kupa mamwe mabhenefiti emunzvimbo asi nemutengo wekurasika kwekushanda zvakanaka (nekunyanya kushanda kwakafanana nekwekunogara kumberi kwakakomberedzwa mafeni ecentrifugal).Iwo mafeni anozokwevera mweya mukati kuburikidza neinopinza cone (nenzira imwechete seyemumba feni) asi vozoburitsa mhepo yakatenderedza iyo yese 360 ​​° yekunze denderedzwa remhepo.Ivo vanogona kupa kuchinjika kukuru kwekubuda kwekubatanidza (kubva kuplenum), zvichireva kuti panogona kunge paine kushomeka kwemabhendi ari padyo kana shanduko dzakapinza muduti iyo inozowedzera kune system kudonhedza kudonha (uye, nekudaro, yakawedzera fan simba).Yakazara sisitimu inoshanda inogona kuvandudzwa nekushandisa bhero muromo kupinda kune maducts anosiya plenum.Imwe yemabhenefiti eplug fan ndeye yakagadziridzwa acoustic kuita kwayo, zvakanyanya zvichikonzerwa nekunyudzwa kweruzha mukati meplenum uye kushomeka kwenzira dze'kuona zvakananga' kubva kune impeller ichipinda mumuromo weiyo ductwork.Iko kushanda kwayo kuchatsamira zvakanyanya pane nzvimbo yefani mukati meplenum uye hukama hwefan kune yayo yekubuda - iyo plenum iri kushandiswa kushandura kinetic simba mumhepo nekudaro kuwedzera static pressure.Kuita kwakasiyana-siyana uye kusimba kwakasiyana-siyana kwekushanda kuchaenderana nemhando ye impeller - yakasanganiswa inoyerera impellers (inopa musanganiswa weradial uye axial kuyerera) yakashandiswa kukunda matambudziko ekuyerera anokonzerwa neiyo yakasimba radial air flow pattern yakagadzirwa uchishandisa nyore centrifugal impellers3.

Kune madiki mayuniti, yavo compact dhizaini inowanzo wedzerwa kuburikidza nekushandisa ari nyore kudzora EC mota.

Axial fans

Mune axial inoyerera mafeni, mhepo inopfuura nepakati pefeni inopindirana neaxis yekutenderera (sezvinoratidzwa mune iri nyore chubhu axial fan yeFigure 6) - kudzvanywa kuri kugadzirwa neaerodynamic lift (yakafanana nebapiro rendege).Izvi zvinogona kuenzana compact, mutengo wakaderera uye uremu, kunyanya wakakodzera kufambisa mhepo uchipesana nezvinodzvinyirira zvishoma, saka zvinowanzo shandiswa mukubvisa masisitimu uko madonhwe ekumanikidza ari akaderera pane ekupa masisitimu - iyo inopihwa kazhinji inosanganisira kudonha kwemhepo yese yemhepo. zvikamu mumhepo inobata chikwata.Kana mhepo ichisiya iri nyore axial fan, ichange ichitenderera nekuda kwekutenderera kunoitwa pamhepo sezvainopfuura nepamhepo - kuita kwe fan kunogona kuvandudzwa zvakanyanya neakadzika dhiraivha vanes kuti vadzore swirl, semune vane. axial fan inoratidzwa muMufananidzo 7. Kubudirira kweaxial fan kunokonzerwa nechimiro cheblade, kureba pakati pepamusoro pechidzitiro uye nyaya yakapoteredza, uye swirl recovery.Iyo pitch yeblade inogona kuchinjwa kuti inyatso kusiyanisa kubuda kwe fan.Nekudzoreredza kutenderera kweaxial mafeni, mafambiro emhepo anogona zvakare kudzoserwa - kunyangwe iyo fan ichagadzirwa kuti ishande munzira huru.

---

Mufananidzo 6: A chubhu axial flow fan

---

Iyo hunhu curve yeaxial mafeni ine dunhu rekutengesa rinogona kuita kuti risakodzere masisitimu ane huwandu hwakasiyana-siyana hwemamiriro ekushanda, kunyangwe iwo aine bhenefiti yeasina-kuwandisa simba hunhu.

---

Mufananidzo 7: A vane axial flow fan

---

Vane axial mafeni anogona kuita seanodzokera kumashure akakomberedzwa centrifugal mafeni, uye anokwanisa kuburitsa kuyerera kwakanyanya pane zvine musoro kumanikidza (kazhinji kutenderedza 2kPa), kunyangwe ivo vangangowedzera ruzha.

Iyo yakasanganiswa inoyerera feni kusimudzira kweaxial feni uye, sezvakaratidzwa muMufananidzo 8, ine conical yakaumbwa impeller uko mweya unodhonzwa neradially kuburikidza nematanho ari kuwedzera uye wozopfuura axially kuburikidza neanotwasa gidhi vanes.Chiito chakasanganiswa chinogona kuburitsa kudzvanya kwakakwira zvakanyanya kupfuura zvinogoneka nemamwe maaxial flow mafeni.Kushanda uye mazinga eruzha anogona kunge akafanana neaya ekumashure curve centrifugal fan.

---

Mufananidzo 8: Yakasanganiswa inoyerera inline fan

---

Kuiswa kwe fan

Kuedza kupa mhinduro ye fan inoshanda kunogona kudzikiswa zvakanyanya nehukama pakati pefani uye nzira dzepanzvimbo dzemhepo.

---

Nguva yekutumira: Jan-07-2022