Frosting pa doko lobwerera la mpweya wozizira wosungirako kompresa ndi chinthu chofala kwambiri mu firiji.Kawirikawiri, sichidzapanga vuto la dongosolo, ndipo chisanu chaching'ono sichimachitidwa.Ngati chisanu chodabwitsa kwambiri, ndiye choyamba ayenera kuchotsa chifukwa cha chisanu
Choyamba, kompresa mpweya kubwerera doko frosts
Kuzizira polowera mpweya wobwerera kumasonyeza kuti kutentha kwa mpweya wobwerera wa compressor ndikotsika kwambiri.Ndiye nchiyani chidzapangitsa kutentha kwa mpweya wobwerera wa kompresa kukhala wotsika kwambiri?
Unyinji womwewo wa refrigerant, ngati voliyumu ndi kupanikizika zikusintha, kutentha kudzakhala ndi magwiridwe antchito osiyanasiyana.Ngati kutentha kwa kompresa ndi kotsika, kumawonetsa kutsika kwa gasi wobwerera komanso kuchuluka kwa refrigerant ya voliyumu yomweyo nthawi yomweyo.Muzu wa izi ndikuti refrigerant yomwe ikuyenda kudzera mu evaporator siyingathe kuyamwa bwino kutentha komwe kumafunikira pakukulitsa kwake mpaka pamtengo womwe udakonzeratu kutentha.
Pali zifukwa ziwiri za vutoli:
- The throttle madzi refrigerant kotunga ndi wabwinobwino, koma evaporator sangathe kuyamwa kutentha bwinobwino;
- mayamwidwe a kutentha kwa evaporator amagwira ntchito bwino, koma mpweya wa refrigerant ndi wochuluka kwambiri, ndiye kuti, kutuluka kwa refrigerant ndikokwanira, nthawi zambiri timamvetsetsa kuti firiji ndiyochuluka.
Chachiwiri, chifukwa cha kuchepa kwa fluorine chifukwa cha kuzizira kwa mpweya wa kompresa
1.chifukwa kutuluka kwa firiji kumakhala kochepa kwambiri
Kuwonjezako pang'ono kwa firiji sikungagwiritse ntchito dera lonse la evaporator, ndipo kumangopanga kutentha kochepa mu evaporator.M'madera ena, chifukwa cha kuchepa kwa firiji ndi kuwonjezereka mofulumira, kutentha kwa m'deralo kumakhala kochepa kwambiri, ndipo zochitika za evaporator frost zimawonekera.
Pambuyo chisanu m'deralo, chifukwa mapangidwe kutentha kutchinjiriza wosanjikiza pamwamba pa evaporator ndi otsika kutentha kutengerapo m'dera lino, ndi kufutukuka refrigerant anasamutsidwa kumadera ena, ndipo pang'onopang'ono lonse evaporator frosting kapena icing chodabwitsa, evaporator lonse. anapanga wosanjikiza kutentha kutchinjiriza, kotero kukulitsa kudzafalikira kwa kompresa kubwerera chitoliro kutsogolera kompresa kubwerera mpweya frosting.
2.chifukwa cha kuchepa kwa refrigerant
Low evaporation kuthamanga mu evaporator kumabweretsa otsika evaporator kutentha, amene pang'onopang'ono kuchititsa condensation mu evaporator kupanga kutentha kutchinjiriza wosanjikiza, ndi kusamutsa mfundo kufutukuka kwa kompresa kubwerera mpweya, chifukwa kompresa kubwerera mpweya frosting.
Low evaporation kuthamanga mu evaporator kumabweretsa otsika evaporator kutentha, amene pang'onopang'ono kuchititsa condensation mu evaporator kupanga kutentha kutchinjiriza wosanjikiza, ndi kusamutsa mfundo kufutukuka kwa kompresa kubwerera mpweya, chifukwa kompresa kubwerera mpweya frosting.
Pamwambapa mfundo ziwiri zisonyeza evaporator frosting pamaso kompresa kubwerera mpweya frosting.
Ndipotu, nthawi zambiri kwa chisanu chodabwitsa, bola ngati kusintha kwa valavu otentha mpweya bypass.Njira yeniyeni ndikutsegula chivundikiro chakumbuyo cha valavu yodutsa mpweya wotentha, ndiyeno gwiritsani ntchito wrench No.8 hex kuti mutembenuzire nati yosinthira mkati mwawotchi.Kukonzekera sikothamanga kwambiri.Kawirikawiri, idzayimitsidwa pambuyo pa theka la kutembenuka, ndipo dongosolo lidzathamanga kwa nthawi kuti liwone chisanu musanasankhe kupitiriza kusintha.Pamene opareshoni ndi khola ndi frosting chodabwitsa wa kompresa kutha, kumangitsa mapeto chivundikirocho.
Chachitatu chisanu cha silinda (kuzizira kwambiri kwa crankcase)
Kuzizira kwamutu kwa Cylinder kumachitika chifukwa cha kuchuluka kwa nthunzi yonyowa kapena kompresa woyamwa mufiriji.Zifukwa zazikulu za izi ndi:
- Kutsegula kwa valve yowonjezera kutentha ndi yaikulu kwambiri, ndipo kuyika kwa phukusi la kutentha kwa kutentha kuli kolakwika kapena kukonzedwa momasuka, kotero kuti kutentha kumamveka kumakhala kwakukulu kwambiri ndipo spool imatsegulidwa mosadziwika bwino.
Valavu yowonjezera kutentha imagwiritsa ntchito kutentha kwakukulu pamtundu wa evaporator monga chizindikiro cha ndemanga kuti apange chizindikiro chopotoka pambuyo pochifanizitsa ndi mtengo wamtengo wapatali woperekedwa kuti usinthe mafiriji akuyenda mu evaporator.Ndiwowongolera molunjika, womwe umaphatikiza transmitter, regulator ndi actuator.
Malingana ndi mitundu yosiyanasiyana ya ma balance, ma valve owonjezera kutentha akhoza kugawidwa m'magulu:
Mkati moyenera matenthedwe valavu yowonjezera;
Valavu yowonjezera yowonjezera yowonjezera yakunja.
Valve yowonjezera kutentha imatsegulidwa kwambiri, phukusi lozindikira kutentha limayikidwa molakwika kapena lokhazikika, kotero kuti kutentha kumamveka kumakhala kokwera kwambiri ndipo spool imatseguka mosadziwika bwino, zomwe zimapangitsa kuti nthunzi yonyowa ilowe mu compressor, zomwe zimapangitsa chisanu pamutu wa silinda.
Valavu yowonjezera kutentha imatsegulidwa mokulirapo, phukusi lozindikira kutentha limayikidwa molakwika kapena lokhazikika, kotero kuti kutentha kumamveka kwambiri, spool imatsegulidwa mosadziwika bwino, zomwe zimapangitsa kuti nthunzi yonyowa ilowe mu compressor, ndipo mutu wa silinda ndi chisanu.
- Pamene valavu yamadzimadzi ya solenoid ikutha kapena kuyimitsa, valavu yowonjezera sitsekedwa mwamphamvu
Madzi ambiri a mufiriji adawunjikana mu evaporator asanayambe.Izi ndizosavuta kuyambitsa kugunda kwamadzimadzi kompresa!
- Refrigerant kwambiri mu dongosolo
Mulingo wamadzimadzi mu condenser ndi wokwera, malo osinthira kutentha amachepetsedwa, kotero kuti kupanikizika kwa condensing kumawonjezeka, ndiye kuti, kuthamanga kwa valve yowonjezera isanachuluke, mlingo wa firiji mu evaporator ukuwonjezeka, refrigerant yamadzimadzi imatha kusungunuka kwathunthu. mu evaporator, kotero kompresa imatulutsa nthunzi yonyowa, tsitsi la silinda limakhala lozizira kapena ngakhale chisanu, ndipo lingayambitse "kuwomba kwamadzi", ndipo kuthamanga kwa mpweya kumakhala kwakukulu.
Nthawi yotumiza: Dec-06-2022
