Ayinakuphepheka into yokuba iinkqubo zesikhenkcezisi ezisebenza ngokufunxa amaqondo obushushu angaphantsi kweqondo lomkhenkce ekugqibeleni ziya kufumana ukufumba kweqabaka kwiityhubhu zomphunga kunye namaphiko. Iqabaka isebenza njenge-insulator phakathi kobushushu obuza kudluliselwa kwisithuba kunye nefriji, okukhokelela ekunciphiseni ukusebenza kwe-evaporator. Ngoko ke, abavelisi bezixhobo kufuneka basebenzise ubuchule obuthile bokususa le qabaka ngamaxesha athile kwikhoyili. Kwakhona, uhlengahlengiso kolu cwangciso lusisiseko lokuphelisa iqhwa longeza enye intsonkotha kubasebenzi benkonzo yasentsimini. Xa ukuseta ngokufanelekileyo, zonke iindlela ziya kufezekisa isiphumo esinqwenelekayo esifanayo sokunyibilikisa ukuqokelelana kweqabaka. Ukuba umjikelo we-defrost awumiselwanga ngokuchanekileyo, isiphumo esingagqibekanga sokutshatyalaliswa kweqhwa (kunye nokunciphisa ukusebenza kwe-evaporator) kunokubangela ubushushu obuphezulu kunobunqwenelwa kwindawo enesikhenkcezisi, imbuyekezo yefriji okanye imiba yokugawulwa kweoli.
Umzekelo, indawo yokubonisa inyama eqhelekileyo egcina ubushushu bemveliso obuyi-34F inokuba namaqondo obushushu aphumayo omoya amalunga ne-29F kunye nobushushu obugcweleyo be-evaporator obungama-22F. Nangona esi sisicelo sobushushu esiphakathi apho ubushushu bemveliso bungaphezulu kwe-32F, iityhubhu ze-evaporator kunye namaphiko ziya kuba kwiqondo lobushushu elingaphantsi kwe-32F, ngaloo ndlela idala ukuqokelelwa kweqabaka. I-off cycle defrost ixhaphake kakhulu kwizicelo zobushushu obuphakathi, nangona kunjalo ayiqhelekanga ukubona i-gas defrost okanye i-electric defrost kwezi zicelo.
ifriji defrost
Umzobo 1 Ukwakhiwa kweqabaka
CIMA UMJIKELELE UKUTSHINTSHISWA
I-off cycle defrost ifana nje nesandi; ukutshatyalaliswa kufezwa ngokuvala nje umjikelo wefriji, ukukhusela ifriji ekungeneni kwi-evaporator. Nangona i-evaporator inokuba isebenza ngaphantsi kwe-32F, iqondo lobushushu lomoya kwindawo efrijini lingaphezulu kwe-32F. Xa ibhayisekile yefriji ivaliwe, ukuvumela umoya okwindawo efrijini ukuba uqhubeke nokujikeleza ityhubhu ye-evaporator / iifins kuya kuphakamisa ubushushu bomphezulu we-evaporator, ukunyibilikisa iqabaka. Ukongezelela, ukungena komoya okuqhelekileyo kwindawo epholileyo kuya kubangela ukunyuka kweqondo lokushisa lomoya, ukuncedisa ngakumbi umjikelezo we-defrost. Kwizicelo apho amaqondo obushushu omoya kwindawo efrijini aqhele ukuba ngaphezulu kwe-32F, ukunyibilika kweqabaka kumjikelo kungqina ukuba yeyona ndlela isebenzayo yokunyibilikisa ukugcwala kweqabaka kwaye yeyona ndlela ixhaphakileyo yokuqhaqha kwiqondo lobushushu eliphakathi.
Xa i-off cycle defrost iqalisiwe, ukuhamba kwefriji kuthintelwe ekungeneni kwikhoyili ye-evaporator usebenzisa enye yezi ndlela zilandelayo: sebenzisa iwashi yexesha le-defrost ukujikeleza i-compressor off (iyunithi ye-compressor enye), okanye ujikeleze inkqubo yolwelo lwe-solenoid valve eqalisa umjikelo wempompo-phantsi (iyunithi enye yokucinezela okanye i-compressor ye-multiplex okanye i-compressor ye-compressor ye-liquid regula kwindawo yokubeka i-multiplex.
ifriji defrost
Umzobo 2 Umzobo oqhelekileyo wokugungxulwa/ukumpompa iingcingo zombane
Umzobo 2 Umzobo oqhelekileyo wokugungxulwa/ukumpompa iingcingo zombane
Qaphela ukuba kwisicelo esisodwa secompressor apho iwashi yexesha le-defrost iqala umjikelo wokumpompa, i-valve ye-solenoid ye-liquid ikhutshwa ngokukhawuleza. Icompressor iya kuqhubeka isebenza, ukupompa ifriji ngaphandle kwenkqubo yecala eliphantsi kunye ne-receiver ye-liquid. Icompressor iya kujikeleza xa uxinzelelo lokufunxa luwela kwindawo yokumisela i-cut-out yolawulo loxinzelelo oluphantsi.
Kwi-multiplex compressor rack, iwotshi yexesha liya kuthi gqolo ukujikeleza amandla ukuya kwivalve ye-solenoid yolwelo kunye nesilawuli sokufunxa. Oku kugcina umthamo wefriji kwi-evaporator. Njengoko ubushushu be-evaporator busanda, umthamo wefriji kwi-evaporator kwakhona ufumana ukunyuka kwamaqondo obushushu, okusebenza njengendawo yokutshisa ubushushu ukuncedisa ngokunyusa ubushushu bomphezulu we-evaporator.
Awukho omnye umthombo wobushushu okanye amandla oyimfuneko kwi-off cycle defrost. Inkqubo iya kubuyela kwimo yesikhenkcisi kuphela emva kokuba ixesha okanye iqondo lobushushu lifikelelwe. Lo mda wesicelo sobushushu obuphakathi uya kuba malunga ne-48F okanye i-60 imizuzu yekhefu. Le nkqubo iphinda iphindwe ukuya kuthi ga kane ngosuku ngokuxhomekeke kwimeko yokubonisa (okanye i-W/I evaporator) iingcebiso zomenzi.
Intengiso
UKUTSHINISWA KOMbane
Nangona ixhaphake kakhulu kwizicelo zobushushu obuphantsi, i-electric defrost ingasetyenziswa kwizicelo zobushushu obuphakathi. Kwizicelo zobushushu obuphantsi, ukunyibilika komjikelo weqhwa akwenzeki kuba umoya okwindawo efrijini ungaphantsi kwe-32F. Ngoko ke, ngaphezu kokuvala umjikelo wefriji, umthombo wangaphandle wokushisa uyadingeka ukuphakamisa ubushushu be-evaporator. Ukunyibilikisa ubushushu bombane yenye indlela yokongeza umthombo wangaphandle wobushushu ukunyibilikisa ukuqokelelana kweqabaka.
Enye okanye ngaphezulu kweentonga zokufudumeza ezixhasiweyo zifakwe kunye nobude be-evaporator. Xa iwotshi yexesha lokunyibilikisa iqalisa umjikelo wokuthotywa kombane, izinto ezininzi ziya kwenzeka ngaxeshanye:
(1) Isitshixo esiqhele ukuvaleka kwiwotshi yexesha lokunyibilikisa enika amandla kwiinjini zefeni yomphunga siya kuvuleka. Le sekethe inokuthi inike amandla ngokuthe ngqo iinjini ze-evaporator fan, okanye iikhoyili zokubamba ze-evaporator fan fan motor contactors. Oku kuya kujikelezisa iinjini ze-evaporator fan, kuvumela ubushushu obuveliswa kwizifudumezi zokunyibilikisa ukuba bugxile kumphezulu womphunga kuphela, kunokuba budluliselwe emoyeni onokuthi ujikelezwe ngabalandeli.
(2) Olunye iswitshi eqhele ukuvaleka kwiwotshi yexesha lokunyibilikisa enika amandla kwi-solenoid yolwelo (kunye nesilawuli somgca wokufunxa, ukuba siyasebenza) siya kuvula. Oku kuya kuvala ivalve ye-solenoid yolwelo (kunye nesilawuli sokufunxa ukuba sisetyenzisiwe), ukuthintela ukuhamba kwefriji ukuya kumphunga.
(3) Isitshixo esiqhele ukuvuleka kwiwotshi yexesha lokunyibilikisa siya kuvala. Oku kuya kubonelela ngokuthe ngqo umbane kwizifudumezi zokunyibilikisa (izicelo zesifudumezi esincinci esiphantsi kwe-amperage), okanye unikeze amandla kwikhoyili yokubamba yekontraka yesifudumezi se-defrost. Ngamanye amaxesha iiwotshi zakhelwe kwii-contacts ezinomlinganiselo ophezulu we-amperage okwaziyo ukunika amandla ngokuthe ngqo kwizifudumezi ze-defrost, ukuphelisa imfuno yokudibanisa isifudumezi se-defrost.
ifriji defrost
Umzobo 3 Isifudumezi sombane, ukupheliswa kwe-defrost kunye nokulungiswa kokulibaziseka kwefeni
I-defrost yombane inika ukunyibilika okuqinisekileyo ngakumbi kunomjikelo we-off, kunye nexesha elifutshane. Kwakhona, umjikelo we-defrost uya kuphelisa ngexesha okanye ubushushu. Emva kokuphela kweqhwa kusenokubakho ixesha lokuthontsiza; ixesha elifutshane eliya kuvumela iqabaka enyibilikisiweyo ukuba ithontsize kumphezulu we-evaporator kunye ne-pan yokukhupha. Ukongeza, ii-evaporator fan motors ziya kulibaziseka ekuqaliseni kwakhona ixesha elifutshane emva kokuba umjikelo wefriji uqalile. Oku kukuqinisekisa ukuba nakuphi na ukufuma okusekho kumphezulu womphunga akusayi kuvuthelwa kwisithuba esisefrijini. Endaweni yoko, iya kuba ngumkhenkce kwaye ihlale kumphezulu we-evaporator. Ukulibaziseka kwefeni kukwanciphisa umthamo womoya ofudumeleyo ojikeleziswa kwindawo efrijini emva kokuba i-defrost iphelile. Ukulibaziseka kweFan kunokufezekiswa nokuba lulawulo lobushushu (thermostat okanye klixon), okanye ukulibaziseka kwexesha.
Ukunyibilika kombane yindlela elula kakhulu yokunyibilikisa iqabaka kwizicelo apho ukungabikho komjikelo kungenakwenziwa. Umbane uyafakwa, ubushushu buyadalwa kwaye neqabaka iyanyibilika kumphunga. Nangona kunjalo, xa kuthelekiswa ne-off cycle defrost, i-defrost yombane inemiba embalwa engalunganga kuyo: njengeendleko zexesha elilodwa, iindleko ezongeziweyo zokuqala ze-heater rods, ii-contactors ezongezelelweyo, ii-relays kunye nokulibaziseka kokutshintsha, kunye nomsebenzi owongezelelweyo kunye nezinto ezifunekayo kwi-wiring yasendle kufuneka ziqwalaselwe. Kwakhona, iindleko eziqhubekayo zombane owongezelelweyo kufuneka zikhankanywe. Imfuno yomthombo wamandla wangaphandle ukunika amandla izifudumezi zokunyibilikisa isiphumo sesohlwayo samandla esishiyekileyo xa sithelekisa nomjikelo wokuphuma.
Ke, oko kungenxa yomjikelezo, ukunyibilika komoya kunye neendlela zokumisa umbane. Kushicilelo lukaMatshi siza kuphonononga ngokucokisekileyo ukunyibilikiswa kwerhasi.
Ixesha lokuposa: Feb-18-2025