Kutentha kwa utsi wa compressor yoziziritsa mufiriji kumatanthauza valavu yotulutsa utsi pa kutentha kwa refrigerant, kuti zitsimikizire kuti compressor ikugwira ntchito bwino, zomwe zili mu kutentha kwa utsi wa chipangizo cha R12 sizingapitirire madigiri 130.℃, R22 ndipo machitidwe a ammonia sayenera kupitirira 50℃Kutentha kwa utsi kumakhala kokwera kwambiri, zomwe zimapangitsa kuti mafuta opaka mafuta achepetse kukhuthala chifukwa cha kutentha kwambiri, ndikupangitsa kuti mafuta opaka mafuta azikhala ochepa, zomwe zimapangitsa kuti ziwalo zoyendetsera mafuta ziwonongeke mosavuta. Kutentha kwa utsi kukakwera pafupi ndi malo owunikira a mafuta, sikophweka kukhala koopsa, ndipo kutentha kwa utsi kumakhala kwakukulu kwambiri kuposa kutentha kwa kuzizira.
Kutentha kwa kabati kozizira kumakhala kokwera m'magawo awiri: Choyamba, kutayikira kwa fluorine mufiriji komanso palibe kabati kozizira mufiriji komwe kwakhala kukugwira ntchito, koma kutentha mkati mwa kabati sikungachepe. Kwa nthawi yayitali, kutayika kwa chakudya mkati mwa kabati kumakhala kwakukulu, chonde konzani nthawi yeniyeni. Monga mwachizolowezi, sikuti ndi firiji yatsopano yokha, komanso nthawi zambiri m'chipinda chozizira pang'ono kuti mumve izi nthawi zonse kumakhala kochedwa kwambiri. Gawo lina limakhala lopanda chisanu komanso lolimba kumbali ya chisanu. Mufiriji sanaume kwa nthawi yayitali. Pakadali pano, pakhoza kukhala mfundo zingapo za babu lamadzi zomwe zikuwonetsedwa, kutentha mkati mwa kabati kumakhala kokwera.
Firiji yotereyi nthawi zambiri imakhala yovuta kukonza. N'zovuta kupeza malo otayikira kwa nthawi yayitali mutakonza chifukwa zimakhala zovuta kupeza malo otayikira. Chifukwa chachiwiri cha kutentha kwambiri ndi chisanu cha evaporator, vutoli makamaka ndi mafiriji ozizira mpweya, mtundu uwu wa firiji umafuna evaporator, ngati si kutayika kwa chisanu mu evaporator iyi, idzatseka njira ya mpweya. Kuzizira sikudzatuluka ndipo firiji singathe kuziziritsidwa. Vutoli likhoza kukhala chifukwa cha vuto la makina otayikira kapena chifukwa chowerengera nthawi yotayikira ndi cholakwika kapena chubu chotenthetsera chawonongeka.
1. Chokometsera sichiyamba
Ngati mufiriji mulibe magetsi ndipo kuwala kwamkati kungayatse, ndiye kuti mutha kutseka chitseko cha firiji. Ngati firiji yalengeza kuti pali magetsi, ngati kuwala sikuyatsa, yang'anani ngati magetsi akuluakulu ali oyaka kenako onetsetsani kuti fuse ya firiji si firiji yonse. Kodi pali vuto ndi kukhudzana kwa thermostat?
2. Compressor ikhoza kutha, coil ya mota yatha, ndipo choyambira chikhoza kuwonedwa. Pamene chishango chotentha kwambiri chikugwira ntchito, muyenera kudikira kwakanthawi kuti kutentha kwa compressor kuyambe kutsika.
3. Vutoli limachitika chifukwa chakuti thermostat singathe kubwezeretsedwanso, chifukwa ma contacts amalumikizana ndipo sangalekanitsidwe.
3. Chipale chofewa chomwe chili mkati mwa firiji ndi chokhuthala kwambiri ndipo kukana kutentha ndi kwakukulu, zomwe zimakhudza kuyendetsedwa kwa mpweya wozizira.
4, mufiriji simunayikidwe bwino kapena phulusa la condenser ndi lokhuthala kwambiri, motero limakhudza kutayika kwa kutentha kwa condenser.
5, mphamvu ya makina oziziritsira ndi yochulukirapo, ntchito ya compressor ndi yolemera, condenser ndi yotentha mbali yakumtunda, mbali yakumunsi ili pafupi ndi kutentha kwa chipinda. Mphamvu ya refrigerant yochuluka kwambiri yomwe imayambitsidwa mu evaporator singathe kusungunuka kwathunthu, zomwe zimapangitsa kuti mphamvu ya evaporator yozizira ichepe, ngati njira yolumikizirana ndi tebulo la kuthamanga ikuyang'aniridwa, mphamvu yotsika ingapezeke pamwamba pa mtengo wabwinobwino.
Kutentha kwa compressor yoziziritsa mufiriji ndi kutentha kwa refrigerant pa valavu yopumira. Pofuna kuonetsetsa kuti compressor ikugwira ntchito bwino, tipewe vuto la silinda yamadzimadzi. Kutentha kwa suction kuyenera kukhala kokwera pang'ono kuposa kutentha kwa evaporation, zomwe zikutanthauza kuti mpweya woziziritsa mufiriji umakhala mpweya wotentha kwambiri, wokhala ndi kutentha kwambiri. Kawirikawiri, palibe subcooler ya gasi-madzi.
Mu makina oziziritsira a Freon, kutentha kwa mpweya wokoka kuyenera kukhala madigiri 5.℃kutentha kwa mpweya woyamwa ndi kokwera kuposa kutentha kwa evaporation, ndipo digiri ya superheat ya mpweya woyamwa ndi yoyenera. Pa chipangizo choziziritsira cha ammonia, digiri ya superheat ya suction nthawi zambiri imakhala 5 ~ 10℃, digiri ya suction superheat ndi yayikulu kwambiri kapena yaying'ono kwambiri iyenera kupewedwa, ngati digiri ya superheat ndi yayikulu kwambiri, idzachepetsa mphamvu ya firiji, kutentha kwa utsi kukwera, kugwiritsa ntchito mphamvu kukwera, ngati digiri ya superheat ndi yaying'ono kwambiri, n'zosavuta kupanga chodabwitsa cha silinda yamadzimadzi.
Nthawi yotumizira: Juni-12-2023
