Kodi mukudziwa momwe mungatsekere zipinda zozizirazi - Defrost Heating Tube?

A. Mwachidule

Chifukwa cha chisanu pamwamba pa evaporator mu kusungirako ozizira, izo zimalepheretsa conduction ndi kufalitsa mphamvu kuzizira kwa refrigeration evaporator (paipi), ndipo pamapeto pake amakhudza firiji kwenikweni. Pamene makulidwe a chisanu wosanjikiza (ayezi) pamwamba pa evaporator kufika pamlingo wakutiwakuti, refrigeration dzuwa ngakhale akutsikira zosakwana 30%, chifukwa chachikulu kuwononga mphamvu ya magetsi ndi kufupikitsa moyo utumiki wa firiji dongosolo. Choncho, m`pofunika kuchita ozizira yosungirako defrost ntchito yoyenera mkombero. 

B. Cholinga cha kuziziritsa

1, kukonza magwiridwe antchito a firiji;

2. Onetsetsani kuti zinthu zoziziritsidwa m'nyumba yosungiramo zinthu zili bwino;

3, sungani mphamvu;

4, onjezerani moyo wautumiki wamakina osungira ozizira.

C. njira zochepetsera madzi

Njira zoziziritsira zoziziritsa kuziziritsa kuzizira: kutentha kwa gasi wotentha (kutentha kwa fluorine, kutentha kwa ammonia), kuthira madzi, kukhetsa magetsi, kupukuta kwamakina (kopanga) ndi zina.

1, kutentha kwa gasi

Zoyenera kuziziritsa zitoliro zazikulu, zapakati komanso zazing'ono zozizira:

Kutentha kotentha kwambiri kwa gaseous condensate kumalowetsedwa mwachindunji mu evaporator popanda kutsekeka, ndipo kutentha kwa evaporator kumakwera, zomwe zimapangitsa kuti chisanu ndi chisanu chisungunuke kapena kutulutsa kuzizira. Kutentha kwa gasi wotentha ndikokwera mtengo komanso kodalirika, koyenera kukonza ndi kasamalidwe, ndipo zovuta zake zachuma ndi zomangamanga sizili zazikulu.

2, madzi opopera defrost

Amagwiritsidwa ntchito kwambiri pakupukuta kwa chiller chachikulu ndi chapakati:

Nthawi ndi nthawi kupopera evaporator ndi kutentha kwa chipinda madzi kusungunula chisanu wosanjikiza. Ngakhale kuti defrosting zotsatira zake ndi zabwino kwambiri, ndizoyenera kwambiri zoziziritsira mpweya, ndipo zimakhala zovuta kugwiritsa ntchito ma koyilo a nthunzi. Ndizothekanso kupopera evaporator ndi yankho ndi kutentha kwapamwamba kozizira kwambiri, monga 5% mpaka 8% moyikira brine, kuteteza mapangidwe a chisanu.

3, gwero lamagetsi

Chitoliro chotenthetsera chamagetsi chimagwiritsidwa ntchito kwambiri pazozizira zapakatikati ndi zazing'ono:

Waya wotentha wamagetsi umagwiritsidwa ntchito makamaka pakuwotcha kwa aluminiyamu mzere wa chubu magetsi Kutentha kwapakati ndi kakang'ono kozizira kozizira, komwe kumakhala kosavuta komanso kosavuta kugwiritsa ntchito kuzizira; Komabe, pankhani ya zosungirako zozizira za aluminium chubu, zovuta zomanga za aluminiyamu kuyika kwa waya wamagetsi sikochepa, ndipo kulephera kumakhala kokulirapo m'tsogolomu, kukonza ndi kasamalidwe kumakhala kovuta, chuma ndi chovuta, komanso chitetezo chimakhala chochepa.

4, makina ochita kupanga defrosting

Yaing'ono ozizira yosungirako chitoliro defrosting ntchito:

Cold yosungirako chitoliro Buku defrosting ndi ndalama zambiri, choyambirira defrosting njira. Kusungirako kwakukulu kozizira ndi kutsekemera kochita kupanga sikoyenera, kugwira ntchito kwa mutu kumakhala kovuta, kudya kwa thupi kumathamanga kwambiri, nthawi yosungiramo malo osungiramo katundu ndi yaitali kwambiri komanso yovulaza thanzi, kupukuta sikophweka kukhala kokwanira, kungayambitse evaporator. mapindikidwe, ndipo mwina kuswa evaporator kumabweretsa ngozi kutayikira.

D. fluorine dongosolo defrosting njira kusankha

Malingana ndi evaporator yosiyana siyana yosungirako kuzizira, sankhani njira yoyenera yochepetsera. Malo ochepa osungira ozizira amagwiritsa ntchito chitseko chotseka kuti asungunuke mwachilengedwe pogwiritsa ntchito kutentha kwa mpweya. Ena kutentha laibulale chillers kusankha kuimitsa firiji, kutsegula chiller zimakupiza padera, ntchito zimakupiza kufalitsa mpweya defrost, ndipo salola chitoliro cha magetsi kutentha kukwaniritsa cholinga chopulumutsa mphamvu.

1, njira yochotsera madzi ozizira:

(1) Pali magetsi chubu defrosting ndi madzi defrosting akhoza kusankhidwa, madera ndi madzi yabwino kwambiri angakonde kusankha madzi defrosting chiller, madera kusowa madzi amakonda kusankha magetsi chubu defrosting chiller.

(2) magetsi chubu defrosting makamaka ntchito yaing'ono mpweya ozizira defrosting; Madzi otenthetsera chisanu nthawi zambiri amakonzedwa muzowongolera mpweya, mufiriji.

2. Njira yochepetsera mizere yachitsulo:

Pali kutentha kwa fluorine defrosting ndi njira zopangira defrosting.

3. Njira yochepetsera machubu a aluminiyamu:

Pali matenthedwe a fluoride defrosting ndi magetsi otenthetsera matenthedwe njira.

E. ozizira yosungirako defrosting nthawi

Tsopano kuzizira kwambiri kosungirako kuzizira kumayendetsedwa molingana ndi kafukufuku wa kutentha kwa defrosting kapena nthawi ya defrosting. Mafupipafupi, nthawi, ndi kutentha kwa kuyimitsidwa kwa chisanu ziyenera kusinthidwa malinga ndi kuchuluka ndi mtundu wa katundu wosungidwa.

Pamapeto pa nthawi yoziziritsa, ndiyeno mpaka nthawi yodontha, fan imayamba. Samalani kuti musakhazikitse nthawi yoziziritsa motalika kwambiri ndipo yesetsani kupeza defrosting yoyenera. (Kuzungulira kwa defrosting nthawi zambiri kumatengera nthawi yamagetsi kapena nthawi yoyambira ya compressor.)

F. Kusanthula zomwe zimayambitsa chisanu

Pali zifukwa zambiri zomwe zimakhudza mapangidwe a chisanu, monga: mawonekedwe a evaporator, chilengedwe cha mumlengalenga (kutentha, chinyezi) ndi kuthamanga kwa mpweya. Zotsatira pakupanga chisanu ndi ntchito yoziziritsa mpweya ndi izi:

1, kusiyana kwa kutentha pakati pa mpweya wolowera ndi mpweya wozizira wozizira;

2, chinyezi cha mpweya wopuma;

3, kusiyana kwa zipsepse;

4, kuthamanga kwa mpweya wolowera.

Pamene kutentha yosungirako ndi apamwamba kuposa 8 ℃, yachibadwa ozizira yosungirako dongosolo pafupifupi alibe chisanu; Pamene kutentha kozungulira ndi -5 ℃ ~ 3 ℃ ndi chinyezi wachibale wa mpweya ndi lalikulu, mpweya ozizira ndi zosavuta chisanu; Kutentha kozungulira kumatsika, kuthamanga kwa chisanu kumachepa chifukwa chinyezi chomwe chili mumlengalenga chimachepa.