Thaum lub evaporation kub ntawm lub txias cia txias system yog qis dua 0 ° C, ib tug Frost txheej yuav tshwm nyob rau saum npoo ntawm lub evaporator, cuam tshuam lub tshav kub hloov efficiency. Yog li ntawd, tsis tu ncua defrosting kuj yog ib feem tseem ceeb heev ntawm kev kho txias cia. Muaj ntau txoj hauv kev kom defrost. Tam sim no, cov chaw tsim khoom lag luam cia txias feem ntau siv tsib txoj hauv kev: dag defrosting, hluav taws xob defrosting, cua kub defrosting, dej defrosting, cua kub dej defrosting.
1. Kev tuav defrosting yog manually tshem tawm cov Frost txheej nyob rau saum npoo ntawm lub evaporator paug raj. Txoj kev no tuaj yeem ua tiav yam tsis tas siv cov khoom siv tub yees. Txoj kev no yog siv sijhawm ntev thiab ua haujlwm hnyav, thiab cov nyhuv defrosting tsis zoo.
2. Hluav taws xob defrosting yog nruab ib lub tshuab hluav taws xob rau ntawm lub evaporator kom defrost nrog hluav taws xob cua sov. Thaum lub sij hawm defrosting, nres lub compressor los yog tso tseg cov kua rau lub evaporator. Hluav taws xob defrosting muaj qhov zoo ntawm tus nqi qis thiab kev tswj tau yooj yim, tab sis cov nqi khiav lag luam yog siab. Feem ntau siv rau defrosting ntawm cov khoom txias cia, tsis yog rau defrosting cov khoom siv tub yees. Rau qhov sib txawv ntawm qhov kub thiab txias, qhov yuav tsum tau ua rau kev txawj rwb thaiv tsev yuav tsum sib txawv, thiab qhov yuav tsum tau ua kom txias txias yuav tsum sib txawv. Kev tsim cov chaw txias txias yuav tsum tau kho raws li tus neeg siv khoom qhov kev thov ib puag ncig thiab daim ntawv thov, tshwj tsis yog tias tsis muaj qhov tshwj xeeb xav tau los ua txoj hauv kev ntawm kev tsim qauv.
3. Cov roj kub kub defrosting yog siv superheated refrigerant chav tso tawm los ntawm compressor kom tso cua sov hauv cov evaporator thiab yaj cov te txheej ntawm cov evaporator. Cov roj kub defrosting system yog qhov nyuaj thiab tus nqi siab. Tab sis cov nyhuv defrosting zoo dua. Thaum siv nyob rau hauv lub ammonia system, cov roj uas muaj nyob rau hauv lub evaporator kuj yuav muab tso rau hauv lub ntws los yog tsis tshua muaj siab circulation reservoir. Nyob rau hauv cov txheej txheem ntawm cov roj kub defrosting, lub siab feem ntau tswj ntawm 0.6MPa. Sim siv cov pa roj tso tawm los ntawm ib theem compressor rau defrosting. Lub caij ntuj no tuaj yeem tsim nyog los txo cov dej txias los yog txo cov condensers, ua kom cov cua sov, ua kom lub sijhawm defrosting. Rau ammonia systems, kub ammonia rau defrosting yuav tsum tau txuas nrog lub tso pa ntawm cov roj separator.
4. Dej defrosting yog txau dej rau ntawm qhov chaw ntawm cov evaporator nrog lub tshuab nqus dej kom yaj cov txheej txheej Frost. Dej defrosting system muaj cov qauv complex thiab tus nqi siab, tab sis cov nyhuv zoo thiab tus nqi qis. Dej defrosting tsuas yog tshem tawm cov Frost txheej ntawm sab nrauv ntawm lub evaporator, thiab tsis tuaj yeem daws qhov tsis zoo ntawm cov roj tsub zuj zuj hauv cov evaporator ntawm kev hloov hluav taws xob. Qhov tseem ceeb tshaj plaws yog lub rooj tsav xwm txias txias, uas feem ntau yog tsim ua ntej los ntawm cov chaw tsim khoom txias cia txias thiab muaj qhov ntev, qhov dav thiab tuab. 100mm tuab txias cia board feem ntau yog siv rau siab thiab nruab nrab kub cia txias, 120mm los yog 150mm tuab txias cia board feem ntau yog siv rau qhov kub thiab txias cia.
5. Cov cua kub dej defrosting yog ob txoj hauv kev kub defrosting thiab dej defrosting siv tib lub sijhawm, uas mloog zoo rau ob qho tib si, thiab tuaj yeem tshem tawm cov Frost txheej ntawm cov evaporator thiab tshem tawm cov tsub zuj zuj ntawm cov roj. nyob rau hauv lub evaporator. Thaum defrosting, cov roj kub yog thawj zaug xa mus rau hauv lub evaporator kom cais cov te los ntawm cov evaporator saum npoo, thiab tom qab ntawd cov dej yog txau kom sai sai tshem tawm cov Frost txheej. Tom qab cov dej tau raug txiav tawm, qhov saum npoo ntawm cov evaporator yog "qhuav" los ntawm huab cua kub los tiv thaiv cov yeeb yaj kiab dej ntawm qhov dej khov thiab cuam tshuam rau cov cua sov. Yav dhau los, cov chaw tsim khoom txias cia txias feem ntau siv polyethylene thiab polystyrene ua cov khoom siv. Tam sim no muaj kev ua tau zoo ntawm polyurethane sandwich board. Polystyrene ua npuas ncauj rwb thaiv tsev cov ntaub ntawv ceev yog tsawg, tsis tuaj yeem insulated. Lawv feem ntau yog siv rau hauv cov cuab yeej tshwj xeeb. Polyethylene yog cov khoom siv raw zoo. Los ntawm ib qho piv txwv, tuaj yeem ua npuas tawm ntawm qhov tsim nyog, cov nyhuv rwb thaiv tsev zoo, muaj zog muaj peev xwm ntawm cov khoom siv rwb thaiv tsev. Polyurethane phaj zoo dua, muaj kev rwb thaiv tsev zoo dua thiab tsis nqus dej noo, tab sis tus nqi cia txias no yog me ntsis siab dua.
Post lub sij hawm: Dec-08-2023