Thaum lub cua sov sov ntawm cov khoom txias txias dua 0 ° C, txheej txheej txheej nrawm tshwm sim, cuam tshuam rau kev hloov pauv kub. Yog li ntawd, kev tsis tu ncua tsis tu ncua kuj tseem yog ib feem tseem ceeb ntawm cov khoom lag luam txias. Muaj ntau txoj hauv kev los defrost. Tam sim no, txias cia khoom siv cov tuam ntxhab tsuas yog siv tsib txoj hauv kev: hluav taws xob defrostrosting, kub defrostrosting, dej defrostrosting, dej defrosting, dej defrosting, cua dej kub.
1. Kev tuav defrosting yog kom manually tshem tawm cov te dej los ntawm saum npoo ntawm evaporator slip raj. Hom no tuaj yeem nqa tawm yam tsis tau nres cov khoom siv tub yees. Hom no yog sijhawm sijhawm sijhawm thiab kev lag luam, thiab cov nyhuv defrosting tsis zoo.
2. Hluav taws xob dag hluav taws xob yog txhawm rau nruab ib lub rhaub dej kub ntawm lub evaporator kom defrost nrog hluav taws xob cua sov. Thaum lub sij hawm defrosting, nres lub compressor lossis txwv pub mis rau cov kua ntoo rau lub Evaporator. Fais fab tshuaj muaj hluav taws xob muaj qhov zoo ntawm tus nqi qis thiab tswj tau yooj yim, tab sis kev ua haujlwm nqi yog qhov siab. Feem ntau siv rau defrosting ntawm cov khoom lag luam txias, tsis yog rau defrosting ntawm cov khoom siv tub yees. Rau qhov kub thiab txias sib txawv, cov cai rau kev sib tw kev txawj yuav tsum muaj qhov sib txawv, thiab lub peev xwm uas yuav tsum tau sib txawv. Qhov tsim ntawm cov chaw tsim khoom txias yuav tsum tau kho tau raws li cov qhua tuaj noj mov muaj kev thov tshwj xeeb, tshwj tsis yog tsis muaj kev tshwj xeeb xav tau txoj kev ntawm cov qauv.
3. Cov roj kub kub tsis huv yog kev siv cov chav txias superhe ua kom tso tawm los ntawm lub tshuab pa hluav taws xob kom tso tawm cov cua sov hauv cov npoo av ntawm lub evaporator. Kub roj tiv thaiv kab ke yog qhov nyuaj thiab tus nqi yog siab. Tab sis cov nyhuv defrosting zoo dua. Thaum siv nyob rau hauv Ammonia system, cov roj nce nyob hauv cov evaporator kuj tseem tuaj yeem tso tawm rau hauv cov dej lossis cov khoom siv siab qis dua cov dej num. Nyob rau hauv tus txheej txheem ntawm kub roj defrosting, lub siab yog feem ntau tswj tau ntawm 0.6mpa. Sim siv cov roj ntsha tau tso tawm los ntawm ib theem kev ua compressor rau defrosting. Lub caij ntuj no tuaj yeem tsim nyog kom txo cov dej txias lossis txo cov hws hws, nce lub sijhawm ntsuas kub, luv luv lub sijhawm defrosting. Rau Ammonia Systems, kub ammonia rau defrosting yuav tsum txuas nrog cov pa yeeb ntawm cov roj Separator.
4. Dej defrosting yog kom tsuag dej nyob rau saum npoo ntawm evaporator nrog ib tug sprinkler ntaus ntawv mus rau melt cov txheej txheem te. Dej defrosing system muaj cov qauv nyuaj thiab tus nqi siab, tab sis cov nyhuv zoo thiab tus nqi qis. Cov dej defrosting tsuas tuaj yeem tshem tawm cov txheej txheem te ntawm sab nraud ntawm cov kev cuam tshuam hluav taws xob, thiab tsis tuaj yeem daws cov txiaj ntsig zoo ntawm cov roj tsub zuj ntawm kev hloov pauv thaum tshav kub. Qhov tseem ceeb tshaj plaws yog qhov chaw nres tsheb txias, uas feem ntau yog tsim ua ntej los ntawm cov chaw tsim khoom txias hauv chaw tsim khoom thiab muaj qhov ntev ntev, dav thiab tuab. 100 hli tuab tuab chaw muag khoom yog feem ntau siv rau qhov kub thiab nruab nrab txias cia khoom, 120mm lossis 150 hli TLE txias cia khoom thiab txias cia.
5. Cov pa dej kub muaj ob txoj hauv kev kub ntawm cov txheej txheem los ntawm cov roj evaporator thiab tshem tawm cov kev txuam nrog cov roj evaporator thiab tshem tawm cov khoom txuam ntawm cov roj evaporator. Thaum defrosting, cov roj kub tau xa mus rau hauv Evaporator cais cov txheej txheem te dej, thiab tom qab ntawd cov dej txau kom nrawm nrawm nrawm nrawm. Tom qab cov khoom siv dej txiav, qhov saum npoo ntawm evaporator yog "qhuav" los ntawm huab cua kub kom tiv thaiv cov yeeb yaj kiab saum npoo los ntawm khov thiab cuam tshuam rau cov cua sov hloov. Yav dhau los, txias cia Board cov tuam ntxhab tsuas yog siv polyethylene thiab polystyrene raws li cov ntaub ntawv. Tam sim no muaj kev ua tau zoo dua ntawm Polyurethane Sandwich Board. Polystyrene ua npuas ncauj rwb thaiv tsev cov khoom siv ceev yog qhov tsawg, tsis tuaj yeem yog insulated. Lawv feem ntau yog siv hauv cov cuab yeej tshwj xeeb. Polyethylene yog cov khoom siv zoo. Los ntawm qee qhov sib piv, tuaj yeem ua kom luv, rwb thaiv tsev rwb thaiv tsev yog qhov zoo, muaj zog coj muaj peev xwm ntawm cov khoom siv rwb thaiv tsev. Phaj Polyurethane yog qhov zoo dua, muaj cov rwb thaiv tsev zoo dua thiab tsis nqus noo noo, tab sis cov nqi txias no yog qhov siab dua.
Lub Sijhawm Post: Dec-08-2023