Fani ndi mtundu wa makina omwe amagwiritsidwa ntchito kupondereza ndi kunyamula gasi. Kuchokera pamalingaliro a kutembenuka kwa mphamvu, ndi mtundu wa makina omwe amasintha mphamvu zamakina a premover kukhala mphamvu ya gasi.
Malinga ndi mfundo ya gulu la zochita, mafani atha kugawidwa mu:
· Turbofan - chofanizira chomwe chimakanikiza mpweya pozungulira masamba.
· Positive displacement fan - makina omwe amapanikiza ndi kunyamula gasi posintha kuchuluka kwa gasi.
Amasankhidwa potengera momwe mayendedwe amayendedwe:
· Kukupiza kwa Centrifugal - Mpweya ukalowa mu chiwongolero cha fan axially, umakanizidwa ndi mphamvu ya centrifugal ndipo makamaka umayenda mozungulira.
· Axial-flow fan - Mpweya umayenda mozungulira munjira ya tsamba lozungulira. Chifukwa cha kugwirizana pakati pa tsamba ndi mpweya, mpweya umatsindikizidwa ndipo umayenda pafupifupi munjira ya axial pamtunda wa cylindrical.
· fan-flow fan - Mpweya umalowa mu tsamba lozungulira pa Angle kupita ku tsinde lalikulu ndipo umayenda pafupifupi motsatira chulucho.
· Kuwotcha-wodutsa mpweya - mpweya umadutsa muzitsulo zozungulira ndipo umagwiritsidwa ntchito ndi tsamba kuti uwonjezere kuthamanga.
Kugawika ndi kukakamiza kwakukulu kapena kutsika (kuwerengeredwa ndi kukakamizidwa kwathunthu):
Ventilator - kuthamanga kwa mpweya pansi pa 112700Pa;
+ blower - kuthamanga kwa mpweya kumayambira 112700Pa mpaka 343000Pa;
kompresa - kuthamanga kwa mpweya pamwamba pa 343000Pa;
Gulu lofananira la kuthamanga kwambiri komanso kutsika kwa fan ndi motere (mu standard state):
· Otsika kuthamanga centrifugal zimakupiza: zonse kuthamanga P≤1000Pa
· Kuthamanga kwapakati pa centrifugal fan: kuthamanga kwathunthu P=1000 ~ 5000Pa
· Kuthamanga kwambiri kwa centrifugal fan: kuthamanga kwathunthu P=5000 ~ 30000Pa
· Kutsika kwamphamvu kwa axial flow fan: kuthamanga kwathunthu P≤500Pa
· Kuthamanga kwakukulu kwa axial flow fan: kuthamanga kwathunthu P=500 ~ 5000Pa
Njira yopangira dzina la Fan centrifugal:
Mwachitsanzo: 4-79NO5
Chitsanzo ndi stylingle:
Mwachitsanzo: YF4-73NO9C
Kuthamanga kwa centrifugal fan kumatanthawuza kuthamanga kwamphamvu (kogwirizana ndi kupanikizika kwa mlengalenga), ndiko kuti, kuwonjezeka kwa mphamvu ya mpweya mu fani kapena kusiyana pakati pa mphamvu ya mpweya polowera ndi kutuluka kwa fani. . Lili ndi static pressure, dynamic pressure ndi kukakamiza kwathunthu. Gawo la magwiridwe antchito limatanthawuza kukakamizidwa kwathunthu (kofanana ndi kusiyana pakati pa kukakamiza kwathunthu kwa chotengera cha fan ndi kukakamiza kwathunthu kwa cholowera cha fan), ndipo gawo lake limagwiritsidwa ntchito kwambiri Pa, KPa, mH2O, mmH2O, ndi zina zambiri.
Yendani:
Kuchuluka kwa mpweya womwe ukuyenda kudzera pa fan pa nthawi ya unit, yomwe imadziwikanso kuti voliyumu ya mpweya. Nthawi zambiri Q amagwiritsidwa ntchito kuyimira, gawo wamba ndi; m3/s, m3/mphindi, m3/h (masekondi, mphindi, maola). (Nthawi zina amagwiritsidwanso ntchito "kuthamanga kwa misa" ndiko kuti, kuchuluka kwa mpweya womwe ukuyenda kudzera pa fani pa nthawi ya unit, nthawi ino iyenera kuganizira kuchuluka kwa mpweya wa cholowera cha fan, komanso mawonekedwe a mpweya, kuthamanga kwamlengalenga, kutentha kwa mpweya, kuthamanga kwa mpweya. imakhudza kwambiri, iyenera kutembenuzidwa kuti ipeze chikhalidwe cha "gasi".
Liwiro lozungulira:
Liwiro la kuzungulira kwa fan. Nthawi zambiri amawonetsedwa mu n, ndipo gawo lake ndi r/min (r limasonyeza liwiro, min limasonyeza miniti).
Mphamvu:
Mphamvu yofunikira kuyendetsa fan. Nthawi zambiri amawonetsedwa ngati N, ndipo gawo lake ndi Kw.
Code yogwiritsa ntchito fan
Njira yopatsirana komanso magwiridwe antchito amakina:
Fan magawo wamba, zofunika luso
Chikupiza mpweya wabwino: kuthamanga kwathunthu P=… .Pa, traffic Q=… m3/h, kutalika (kuthamanga kwa mumlengalenga), njira yotumizira, sing'anga yotumizira (mpweya sungathe kulembedwa), kuzungulira kwa choyikapo, cholowera ndi ngodya (kuchokera ku mapeto a injini), kutentha kwa ntchito T=… ° C (kutentha kwa chipinda sikungalembedwe), chitsanzo cha galimoto…… .. dikirani.
Mafani otentha kwambiri ndi mafani ena apadera: kuthamanga kwathunthu P=… Pa, flow Q=… m3/h, kachulukidwe wa gasi wochokera kunja Kg/m3, njira yotumizira, sing'anga yotumizira (mpweya sungathe kulembedwa), kuzungulira kwa choyikapo, kulowetsa ndi kolowera (kuchokera kumapeto kwa injini), kutentha kwa ntchito T=….. ℃, kutentha kwambiri pompopompo T=… ° C, kachulukidwe wa gasi wochokera kunja □Kg/m3, kuthamanga kwa mumlengalenga (kapena mulingo wapanyanja), kuchuluka kwa fumbi, chitseko chowongolera mafani, mtundu wamagalimoto, cholumikizira cholozera ndi kutumiza kunja, choyambira chonse, cholumikizira ma hydraulic (kapena chosinthira pafupipafupi, choyambira chamadzimadzi), potengera mafuta ocheperako, chipangizo chosinthira pang'onopang'ono, chowongolera, kabati yoyambira, kabati yowongolera… .. dikirani.
Njira zopewera kuthamanga kwa mafani (B, D, C drive)
· 4-79 mtundu: 2900r / min ≤NO.5.5; 1450 r/mphindi ≤NO.10; 960 r/mphindi ≤NO.17;
· 4-73, 4-68 mtundu: 2900r / min ≤NO.6.5; 1450 r/mphindi ≤15; 960 r/mphindi ≤NO.20;
Mafani nthawi zambiri amagwiritsa ntchito njira yowerengera (yosavuta, yoyerekeza, yogwiritsa ntchito wamba)
Kukwera kumasinthidwa kukhala mphamvu ya mumlengalenga yapafupi
(760mmHg)-(sea level ÷12.75)= local atmospheric pressure (mmHg)
Chidziwitso: Matali pansi pa 300m Sangakonzedwe.
·1mmH2O=9.8073Pa;
1mmHg=13.5951 mmH2O;
760 mmHg=10332.3117 mmH2O
· Kuthamanga kwa mafani 0 ~ 1000m pamtunda wanyanja sikungawongoleredwe;
Kuthamanga kwa 2% pamtunda wa 1000 ~ 1500M;
Kuthamanga kwa 3% pamtunda wa 1500 ~ 2500M;
· 5% kutulutsa pamtunda wanyanja pamwamba pa 2500M.
Ns:
Nthawi yotumiza: Aug-17-2024