Iyo fan imhando yemuchina unoshandiswa kumanikidza uye kutakura gasi. Kubva pakuona kwekushandurwa kwesimba, imhando yemakina anoshandura simba remagetsi reiyo prime mover kuita gasi simba.
Zvinoenderana nemusimboti wekuita kupatsanura, mafeni anogona kukamurwa kuita:
· Turbofan – feni inodzvanya mhepo nemashizha anotenderera.
· Positive displacement fan - muchina unomanikidza uye kutakura gasi nekuchinja huwandu hwegasi.
Inokamurwa zvichienderana nekuyerera kwemhepo:
· Centrifugal fan - Mushure mekunge mhepo yapinda mupeller ye fan axially, inomanikidzwa pasi pechiito che centrifugal simba uye inonyanya kuyerera munzira ye radial.
· Axial-flow fan - Mhepo inoyerera ichipinda mugedhi rinotenderera. Nekuda kwekudyidzana pakati peblade negasi, gasi rinodzvanywa uye rinoyerera rinenge mune axial direction pane cylindrical surface.
· mixed-flow fan – Gasi rinopinda mublade rinotenderera paAngle kuenda kuhombe shaft yoyerera inenge ichitevedza koni.
· Muchinjika-kuyerera feni - gasi rinopfuura nepainotenderera blade uye rinoitwa nebadza kuti riwedzere kudzvanywa.
Kurongeka nepamusoro kana kuderera kwekugadzira kudzvanywa (kukaverengerwa neabsolute pressure):
Ventilator - kupera simba pazasi 112700Pa;
· blower - exhaust pressure inotangira pa112700Pa kusvika 343000Pa;
· compressor - kupera simba pamusoro pe343000Pa;
Iyo inoenderana kupatsanurwa kwe fan yakakwira uye yakaderera kudzvanywa kunotevera (mumamiriro akajairwa):
· Yakaderera kudzvanywa centrifugal fan: yakazara kumanikidza P≤1000Pa
· Medium pressure centrifugal fan: full pressure P=1000~5000Pa
· High pressure centrifugal fan: full pressure P=5000~30000Pa
· Yakaderera kudzvinyirira axial kuyerera fan: yakazara kumanikidza P≤500Pa
· High pressure axial flow fan: full pressure P=500~5000Pa
Nzira ye centrifugal Fan zita:
Somuenzaniso: 4-79NO5
Nzira yemuenzaniso uye style:
Somuenzaniso: YF4-73NO9C
Dzvinyiriro ye centrifugal fan inoreva kuwedzera kudzvanywa (zvinoenderana nekumanikidza kwemhepo), ndiko kuti, kuwedzera kwekumanikidza kwegasi mufani kana mutsauko uripo pakati pekumanikidza kwegasi pakupinda nekubuda kwefani. . Iine static pressure, dynamic pressure uye total pressure. Iyo parameter yekuita inoreva kudzvanywa kwese (yakaenzana nemusiyano pakati pekumanikidza kwese kwe fan outlet uye kumanikidza kwese kweiyo fan inlet), uye iyo unit inowanzoshandiswa Pa, KPa, mH2O, mmH2O, nezvimwe.
Kuyerera:
Huwandu hwegasi inoyerera kuburikidza nefeni panguva yeyuniti, inozivikanwawo sehuwandu hwemhepo. Inowanzo shandiswa Q kumiririra, iyo yakajairika unit ndeye; m3/s, m3/min, m3/h (masekondi, maminetsi, maawa). (Dzimwe nguva inoshandiswawo "kuyerera kukuru" ndiko kuti, kuwanda kwegasi inoyerera nemu fan pane imwe nguva unit, panguva ino inofanirwa kufunga nezve gasi density yeinopinza fan, uye gasi kuumbwa, yemuno mhepo yemhepo, tembiricha yegesi, inlet pressure. ine hukama hwepedyo, inoda kushandurwa kuti iwane tsika ye "gas flow".
Kutenderera kumhanya:
Fan rotor kutenderera kumhanya. Inowanzo kuratidzwa mu n, uye chikamu chayo r/min (r inoratidza kumhanya, min inoratidza miniti).
Simba:
Simba rinodiwa kutyaira fan. Inowanzo kuratidzwa seN, uye chikamu chayo Kw.
Common fan use code
Transmission mode uye mashandiro emuchina:
Fan common parameters, technical zvinodiwa
General ventilation fan: full pressure P=… .Pa, traffic Q=… m3/h, urefu (yenzvimbo yemhepo yemhepo), nzira yekufambisa, svikiro remhepo (mhepo haigone kunyorwa), kutenderera kwe impeller, inlet uye kona yekubuda (kubva motor end), tembiricha yekushanda T=… ° C (tembiricha yemumba haigone kunyorwa), mota modhi…… .. mira.
Tembiricha yakakwira mafeni uye mamwe mafeni akakosha: kumanikidza kuzere P=… Pa, kuyerera Q=… m3/h, kunze kwegasi density Kg/m3, nzira yekufambisa, svikiro rekufambisa (mhepo inogona kunge isina kunyorwa), kutenderera kwemhepo, kupinza uye kona yekubuda. (kubva kumagumo emota), tembiricha yekushanda T=….. ℃, tembiricha yakakwira nekukasika T=… ° C, gasi rinobva kunze kwenyika □Kg/m3, mhepo yemuchadenga yenzvimbo (kana gungwa renzvimbo), kuzara kweguruva, dhoo rinodzora feni, modhi yemota, kupinza uye kutumira kunze kwekuwedzera kwejoinhi, hwaro hwese, hydraulic coupling (kana frequency converter, liquid resistance starter), chiteshi chemafuta chitete, chinononoka kushandura mudziyo, actuator, kutanga kabati, control cabinet… .. mira.
Fan high speed precautions (B, D, C drive)
·4-79 mhando: 2900r/min ≤NO.5.5; 1450 r/min ≤NO.10; 960 r/min ≤NO.17;
·4-73, 4-68 rudzi: 2900r/min ≤NO.6.5; 1450 r/min ≤15; 960 r/min ≤NO.20;
Fani inowanzo shandisa fomula yekuverenga (yakarerutswa, fungidziro, kushandiswa kwese)
Kukwirira kunoshandurwa kumhepo yenzvimbo
(760mmHg)-(mwero wegungwa ÷12.75)= dzvinyiriro yemuchadenga (mmHg)
Ongorora: Altitudes pazasi 300m Inogona kusagadziriswa.
·1mmH2O=9.8073Pa;
1mmHg=13.5951 mmH2O;
·760 mmHg=10332.3117 mmH2O
Kuyerera kweFan 0 ~ 1000m pakureba kwegungwa hakugone kugadziriswa;
· 2% kuyerera mwero pa1000 ~ 1500M kukwirisa;
· 3% kuyerera mwero pa1500 ~ 2500M kukwirira;
· 5% kubuda pagungwa pamusoro pe2500M.
Ns:
Nguva yekutumira: Aug-17-2024