Pamene evaporation kutentha kwa ozizira yosungirako firiji dongosolo ndi otsika kuposa 0 ° C, chisanu wosanjikiza adzaoneka pamwamba pa evaporator, zimakhudza kutentha kutengerapo dzuwa.Choncho, kutsekemera nthawi zonse ndi gawo lofunika kwambiri la kusungirako kuzizira.Pali njira zambiri zochepetsera madzi.Pakalipano, opanga zomanga zosungirako zozizira makamaka amagwiritsa ntchito njira zisanu: kutsekemera kochita kupanga, kutsekemera kwa magetsi, kutentha kwa mpweya wotentha, kutsekemera kwa madzi, kutsekemera kwa madzi otentha.
1. Pamanja defrosting ndi pamanja kuchotsa chisanu wosanjikiza pamwamba pa evaporator kumaliseche chubu.Njirayi ikhoza kuchitika popanda kuyimitsa zida za firiji.Njirayi ndi yowononga nthawi komanso yotopetsa, ndipo zotsatira zake zoziziritsa ndizochepa.
2. Kuwotcha kwamagetsi ndiko kukhazikitsa chowotcha chamagetsi pa evaporator kuti chisungunuke ndi kutentha kwamagetsi.Panthawi yoziziritsa, siyani kompresa kapena kusiya kudyetsa madzi ku evaporator.Kuwotcha kwamagetsi kuli ndi ubwino wake wotsika mtengo komanso kuwongolera kosavuta, koma mtengo wake ndi wokwera.Nthawi zambiri ntchito defrosting zipangizo ozizira yosungirako, osati defrosting wa firiji zipangizo.Kwa kutentha kosiyana, zofunikira za luso la kutchinjiriza ziyenera kukhala zosiyana, komanso mphamvu yozizirira yofunikira iyeneranso kukhala yosiyana.Kukhazikitsidwa kwa kusungirako kozizira kumafunika kusinthidwa molingana ndi malo enieni ogwiritsira ntchito makasitomala ndi ntchito, pokhapokha ngati palibe chofunikira chapadera chotengera msewu wokhazikika.
3. Kutentha kwa mpweya wotentha ndiko kugwiritsa ntchito mpweya wotentha kwambiri wa refrigerant wotulutsidwa ndi kompresa kumasula kutentha mu evaporator ndi kusungunula chisanu chosanjikiza pamwamba pa evaporator.Dongosolo la kutentha kwa gasi ndizovuta komanso mtengo wake ndi wokwera.Koma defrosting zotsatira ndi bwino.Akagwiritsidwa ntchito mu ammonia, mafuta omwe amasonkhanitsidwa mu evaporator amathanso kutayidwa mu kukhetsa kapena posungira kutsika kwapakati.M'kati mwa kutentha kwa mpweya wotentha, kupanikizika nthawi zambiri kumayendetsedwa pa 0.6MPa.Yesetsani kugwiritsa ntchito mpweya wothamanga kwambiri womwe umatulutsidwa pagawo limodzi la kompresa kuti muchepetse.Zima zingakhale zoyenera kuchepetsa madzi ozizira kapena kuchepetsa chiwerengero cha condensers, kuonjezera kutentha kwa mpweya, kuchepetsa nthawi yowonongeka.Kwa machitidwe a ammonia, ammonia otentha kuti awonongeke ayenera kulumikizidwa ndi chitoliro chotulutsa mafuta cha olekanitsa mafuta.
4. Kuwotcha madzi ndi kupopera madzi pamwamba pa evaporator ndi sprinkler chipangizo kusungunula chisanu wosanjikiza.Dongosolo la defrosting lamadzi lili ndi mawonekedwe ovuta komanso okwera mtengo, koma zotsatira zabwino komanso zotsika mtengo.Madzi defrosting akhoza kokha kuchotsa chisanu wosanjikiza pamwamba padziko evaporator, ndipo sangathe kuthetsa mavuto a mafuta kudzikundikira mu evaporator pa kutentha kutengerapo.Chofunika kwambiri ndi bolodi losungirako kuzizira, lomwe nthawi zambiri limapangidwa pasadakhale ndi wopanga bolodi lozizira ndipo limakhala ndi kutalika kwake, m'lifupi ndi makulidwe.100mm wandiweyani ozizira yosungirako bolodi nthawi ntchito mkulu ndi sing'anga kutentha ozizira yosungirako, 120mm kapena 150mm wandiweyani bolodi ozizira yosungirako nthawi ntchito otsika kutentha yosungirako ndi kuzizira kosungira.
5. Kutentha kwamadzi otentha kwamadzi ndi njira ziwiri zowotchera ndi kutsekemera kwa madzi zomwe zimagwiritsidwa ntchito nthawi imodzi, zomwe zimaganizira ubwino wa zonsezi, ndipo zimatha kuchotsa chisanu pamwamba pa evaporator ndikuchotsa kudzikundikira kwa mafuta. mkati mwa evaporator.Pamene defrosting, mpweya wotentha umatumizidwa koyamba mu evaporator kulekanitsa chisanu wosanjikiza pamwamba pa evaporator, ndiyeno madzi opopera mwamsanga kutsuka chisanu wosanjikiza.Madzi akatha, pamwamba pa evaporator "youma" ndi mpweya wotentha kuti ateteze filimu yamadzi pamwamba pa kuzizira komanso kusokoneza kutentha kwa kutentha.M'mbuyomu, opanga bolodi oziziritsa ozizira amagwiritsa ntchito polyethylene ndi polystyrene ngati zida.Tsopano pali ntchito yabwino ya polyurethane sangweji bolodi.Polystyrene thovu kutchinjiriza zakuthupi kachulukidwe ndi otsika, sangathe insulated.Nthawi zambiri amagwiritsidwa ntchito pazida zapadera.Polyethylene ndi chinthu chabwino chopangira.Kupyolera mu chiŵerengero, akhoza thovu kuchokera kachulukidwe yoyenera, kutchinjiriza kwenikweni zabwino, amphamvu kubala mphamvu ya zakuthupi kutchinjiriza.Mbale ya polyurethane ndiyabwinoko, imakhala ndi ntchito yabwino yotchinjiriza ndipo simamwa chinyezi, koma mtengo wosungirako kuzizirawu ndiwokwera pang'ono.
Nthawi yotumiza: Dec-08-2023