Makina ambiri oziziritsira mpweya ndi mafiriji amaika ma condens awo panja pazifukwa ziwiri zazikulu. Choyamba, izi zimagwiritsa ntchito kutentha kozizira kwakunja kuti zichotse kutentha komwe kumayamwa ndi evaporator, ndipo chachiwiri, kuchepetsa kuipitsidwa kwa phokoso.
Magawo otenthetsera mpweya nthawi zambiri amakhala ndi ma compressor, ma condenser coil, ma condenser fan akunja, ma contactor, ma starting relay, ma capacitor, ndi ma solid state plates okhala ndi ma circuits. Cholandirira mpweya nthawi zambiri chimaphatikizidwa mu unit yotenthetsera mpweya ya makina oziziritsira. Mkati mwa unit yotenthetsera mpweya, compressor nthawi zambiri imakhala ndi chotenthetsera cholumikizidwa pansi pake kapena ku crankcase. Mtundu uwu wa chotenthetsera nthawi zambiri umatchedwachotenthetsera cha crankcase.
Thechotenthetsera cha crankcase cha compressorndi chotenthetsera cholimba chomwe nthawi zambiri chimamangiriridwa pansi pa crankcase kapena kuyikidwa m'chitsime mkati mwa crankcase ya compressor.Zotenthetsera za CrankcaseKawirikawiri amapezeka pa ma compressor komwe kutentha kwa malo ozungulira kuli kotsika kuposa kutentha kwa evaporator yogwirira ntchito.
Mafuta a crankcase kapena mafuta a compressor ali ndi ntchito zambiri zofunika. Ngakhale kuti refrigerant ndi madzi ofunikira kuti azizire, mafuta amafunika kuti azipaka mafuta mbali zoyenda za compressor. Nthawi zonse, nthawi zonse pamakhala mafuta ochepa omwe amatuluka mu crankcase ya compressor ndikuyenda ndi refrigerant mu dongosolo lonselo. Pakapita nthawi, liwiro loyenera la refrigerant kudzera mu chubu cha system lidzalola mafuta othawawa kubwerera ku crankcase, ndipo ndichifukwa chake mafuta ndi refrigerant ziyenera kusungunuka. Komabe, nthawi yomweyo, kusungunuka kwa mafuta ndi refrigerant kungayambitse vuto lina la system. Vuto ndi kusamuka kwa refrigerant.
Kusamuka ndi chinthu chomwe chimachitika nthawi ndi nthawi. Iyi ndi njira yomwe mafiriji amadzimadzi ndi/kapena nthunzi amasamutsira kapena kubwerera ku crankcase ndi ma suction a compressor panthawi yotseka compressor. Panthawi ya compressor, makamaka nthawi yayitali, refrigerant iyenera kusunthidwa kapena kusunthidwa kupita komwe kupanikizika kuli kotsika kwambiri. Mwachilengedwe, madzi amayenda kuchokera kumalo opanikizika kwambiri kupita kumalo opanikizika pang'ono. Crankcase nthawi zambiri imakhala ndi kupanikizika kochepa kuposa evaporator chifukwa imakhala ndi mafuta. Kutentha kozizira kumawonjezera kupanikizika kochepa kwa nthunzi ndipo kumathandiza kusungunula nthunzi ya refrigerant kulowa mumadzi omwe ali mu crankcase.
Mafuta oziziritsa okha ali ndi mphamvu yochepa ya nthunzi, ndipo kaya firiji ili mu nthunzi kapena madzi, imapita ku mafuta oziziritsa. Ndipotu, mphamvu ya nthunzi ya mafuta oziziritsa ndi yotsika kwambiri kotero kuti ngakhale vacuum ya ma microns 100 itakokedwa pa makina oziziritsa, siidzatha. Nthunzi ya mafuta ena oziziritsa imachepetsedwa kufika pa ma microns 5-10. Ngati mafuta alibe mphamvu yochepa ya nthunzi, imasungunuka nthawi iliyonse pakakhala mphamvu yochepa kapena vacuum mu crankcase.
Popeza kusamuka kwa refrigerant kumatha kuchitika ndi nthunzi ya refrigerant, kusamukako kumatha kuchitika mmwamba kapena pansi. Nthunzi ya refrigerant ikafika pa crankcase, imayamwa ndi kupendekeka mu mafuta chifukwa cha kusamvana kwa refrigerant/mafuta.
Pa nthawi yayitali yotsekedwa, choziziritsira madzi chimapanga gawo lozungulira pansi pa mafuta omwe ali mu crankcase. Izi zili choncho chifukwa mafiriji amadzimadzi ndi olemera kuposa mafuta. Pa nthawi yochepa yotsekedwa ndi compressor, choziziritsira chomwe chimasamutsidwa sichikhala ndi mwayi wokhazikika pansi pa mafuta, koma chimasakanikiranabe ndi mafuta omwe ali mu crankcase. Pa nthawi yotentha komanso/kapena miyezi yozizira pamene mpweya woziziritsa siwofunikira, eni nyumba nthawi zambiri amatseka kulumikizidwa kwa magetsi ku chipangizo choziziritsira mpweya chakunja. Izi zimapangitsa kuti compressor isakhale ndi kutentha kwa crankcase chifukwa chotenthetsera cha crankcase chatha mphamvu. Kusamuka kwa refrigerant kupita ku crankcase kudzachitika nthawi yayitaliyi.
Nyengo yozizira ikayamba, ngati mwininyumba sayatsanso choyatsira magetsi osachepera maola 24-48 musanayambe kugwiritsa ntchito chipangizo choziziritsira mpweya, thovu lalikulu la crankcase ndi kupanikizika zidzachitika chifukwa cha kusamuka kwa nthawi yayitali kwa refrigerant yosazungulira.
Izi zingayambitse kuti crankcase itaye mulingo woyenera wa mafuta, komanso kuwononga ma bearing ndi kuyambitsa kulephera kwina kwa makina mkati mwa compressor.
Ma heater a crankcase apangidwa kuti athandize kuthana ndi kusamuka kwa ma refrigerant. Ntchito ya crankcase heater ndikusunga mafuta mu compressor crankcase kutentha kwambiri kuposa gawo lozizira kwambiri la makina. Izi zimapangitsa kuti crankcase ikhale ndi mphamvu yochulukirapo pang'ono kuposa makina ena onse. Refrigerant yomwe imalowa mu crankcase imasinthidwa nthunzi ndikuyibwezanso mu mzere wokoka.
Munthawi zosagwiritsa ntchito nthawi yozungulira, kusamuka kwa refrigerant kupita ku compressor crankcase ndi vuto lalikulu. Izi zitha kuwononga kwambiri compressor
Nthawi yotumizira: Sep-25-2024