Akunakugwenywa ukuthi amasistimu eziqandisi asebenza ngamazinga okushisa agcwele angaphansi kwezingaqhwa agcine ethole ukunqwabelana kwesithwathwa kumashubhu evaporator namaphiko. Isithwathwa sisebenza njengesivikelo phakathi kokushisa okufanele kudluliselwe esikhaleni nesiqandisi, okuholela ekuncipheni kokusebenza kahle kwe-evaporator. Ngakho-ke, abakhiqizi bemishini kufanele basebenzise amasu athile ukuze ngezikhathi ezithile basuse lesi sithwathwa endaweni yekhoyili.Izindlela zokuncishiswa kweqhwa zingabandakanya, kodwa azikhawulelwanga ekunciphiseni umjikelezo noma ukuchithwa komoya, ugesi kanye negesi (okuzodingidwa kuyo Ingxenye II kumagazini kaNdasa). Futhi, ukulungiswa kwalezi zinhlelo eziyisisekelo zokuncibilikisa uqhwaku kwengeza enye inkimbinkimbi kubasebenzi basensimini. Uma zisethwa kahle, zonke izindlela zizofeza umphumela ofisa ofanayo wokuncibilikisa ukunqwabelana kwesithwathwa. Uma umjikelezo we-defrost ungasethiwe ngendlela efanele, umphumela wokuwohloka kweqhwa okungaphelele (kanye nokuncipha kokusebenza kahle kwe-evaporator) kungabangela izinga lokushisa eliphakeme kunaleso elifiswayo endaweni yesiqandisi, i-floodback yesiqandisi noma izinkinga zokugawulwa kukawoyela.
Isibonelo, ikesi elijwayelekile lokubonisa inyama eligcina izinga lokushisa lomkhiqizo elingu-34F lingase libe nezinga lokushisa lomoya elikhiphayo cishe elingu-29F kanye nezinga lokushisa eligcwalisiwe le-evaporator elingu-22F. Noma lokhu kuwuhlelo lokushisa oluphakathi nendawo lapho izinga lokushisa lomkhiqizo lingaphezu kuka-32F, amashubhu evaporator namafins azoba kuzinga lokushisa elingaphansi kuka-32F, ngaleyo ndlela enze ukunqwabelana kwesithwathwa. I-off cycle defrost ijwayeleke kakhulu ekufakweni kwezinga lokushisa eliphakathi nendawo, nokho akuyona into engavamile ukubona i-gas defrost noma i-electric defrost kulezi zinhlelo zokusebenza.
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Umfanekiso 1 Ukwakheka kwesithwathwa
OFF CYCLE DEFROST
I-off cycle defrost injengoba izwakala; i-defrosting yenziwa ngokuvala nje umjikelezo wesiqandisi, ukuvimbela isiqandisi ukuthi singangeni ku-evaporator. Ngisho noma i-evaporator ingase isebenze ngaphansi kuka-32F, izinga lokushisa lomoya endaweni yesiqandisi lingaphezu kuka-32F. Uma isiqandisi sivaliwe ngebhayisikili, ukuvumela umoya osesiqandisini ukuthi uqhubeke nokujikeleza ngeshubhu/amafins e-evaporator kuzokhuphula izinga lokushisa le-evaporator, kuncibilikise isithwathwa. Ukwengeza, ukungena komoya okuvamile endaweni eqandisiwe kuzokwenza ukuthi izinga lokushisa lomoya likhuphuke, lisize ngokuqhubekayo umjikelezo we-defrost. Ezisetshenziswa lapho izinga lokushisa lomoya endaweni esiqandisi livamise ukuba ngaphezu kuka-32F, ukuncibilikiswa kwesithwathwa kuyindlela ephumelelayo yokuncibilikisa ukunqwabelana kwesithwathwa futhi kuyindlela evame kakhulu yokuncibilika ekufakweni kwezinga lokushisa eliphakathi nendawo.
Lapho i-off cycle defrost iqalwa, ukugeleza kwesiqandisi kuyavinjelwa ukuthi kungangeni ikhoyili evaporator kusetshenziswa enye yezindlela ezilandelayo: sebenzisa iwashi lesikhathi sokuqeda isiqhwa ukuze uvale i-compressor (iyunithi yokucindezela eyodwa), noma ujikelezise umugqa woketshezi wesistimu i-solenoid valve eqala umjikelezo wokudonsa phansi (iyunithi eyodwa yokucindezela iyunithi noma i-multiplexcycle ye-compressor regula i-liquid regula) ku-multiplex rack.
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Umfanekiso 2 Umdwebo wezintambo zokuncibilika/zokumpompa phansi
Umfanekiso 2 Umdwebo wezintambo zokuncibilika/zokumpompa phansi
Qaphela ukuthi kuhlelo lokusebenza lwe-compressor olulodwa lapho iwashi lesikhathi sokuncibilika liqala umjikelezo wokumpompa phansi, i-valve yomugqa owuketshezi we-solenoid ikhishwa amandla ngokushesha. I-compressor izoqhubeka nokusebenza, idonsa isiqandisi siphume ohlangothini oluphansi lwesistimu singene esamukeli samanzi. I-compressor izojikeleza uma ingcindezi yokumunca iwela endaweni ebekiwe yokusika yokulawula ingcindezi ephansi.
Ku-multiplex compressor rack, iwashi lesikhathi ngokuvamile lizozungeza amandla liye ku-valve ye-solenoid yomugqa owuketshezi kanye nesilawuli sokumunca. Lokhu kugcina umthamo wesiqandisi ku-evaporator. Njengoba izinga lokushisa le-evaporator likhuphuka, umthamo wesiqandisi ku-evaporator nawo uhlangabezana nokwenyuka kwezinga lokushisa, osebenza njengesitha sokushisa ukusiza ekukhuphuleni izinga lokushisa elingaphezulu le-evaporator.
Awukho omunye umthombo wokushisa noma amandla odingekayo ukuze kuncishiswe iqhwa. Isistimu izobuyela kumodi yesiqandisi kuphela ngemva kokufinyelela isikhathi noma izinga lokushisa. Lowo mkhawulo wesicelo sezinga lokushisa eliphakathi uzoba cishe ku-48F noma imizuzu engu-60 yesikhathi sokuphumula. Le nqubo ibe isiphindaphindwa kufika izikhathi ezine ngosuku kuye ngokuthi ikesi lokubonisa (noma i-W/I evaporator) izincomo zomkhiqizi.
Isikhangiso
ELECTRIC DEFROST
Nakuba kuvame kakhulu ekusetshenzisweni kwezinga lokushisa eliphansi, i-defrost kagesi ingasetshenziswa futhi ekusetshenzisweni kwezinga lokushisa eliphakathi. Ezingeni eliphansi lokushisa, ukuncibilika kweqhwa akusebenzi uma kubhekwa umoya osesikhaleni esiqandisiwe ungaphansi kuka-32F. Ngakho-ke, ngaphezu kokuvala umjikelezo wesiqandisi, umthombo wangaphandle wokushisa uyadingeka ukuze ukhuphule izinga lokushisa le-evaporator. I-defrost kagesi ingenye yezindlela zokwengeza umthombo wangaphandle wokushisa ukuze kuncibilike ukunqwabelana kwesithwathwa.
Induku eyodwa noma ngaphezulu yokushisisa ukumelana nayo ifakwa ngobude be-evaporator. Uma iwashi lesikhathi sokuncibilika liqala umjikelezo wokuncibilika kukagesi, izinto ezimbalwa zizokwenzeka kanyekanye:
(1) Iswishi evamise ukuvaleka ewashini lesikhathi sokuncibilika enikeza amandla kumamotho amafeni e-evaporator izovuleka. Le seyingi ingase inike amandla ngokuqondile ama-evaporator fan motors, noma amakhoyili okubamba ama-evaporator fan motor contactor. Lokhu kuzozungeza ama-motor fan evaporator, kuvumele ukushisa okukhiqizwa kwizifudumezi zokuqeda uqhwebo ukuthi kugxile endaweni ehwamuzayo kuphela, kunokuba kudluliselwe emoyeni ozosakazwa abalandeli.
(2) Enye iswishi evamise ukuvala ewashini lesikhathi sokuncibilika enikeza amandla ku-solenoid yomugqa owuketshezi (kanye nesilawuli somugqa wokumunca, uma sisetshenziswa) izovuleka. Lokhu kuzovala i-valve ye-solenoid yomugqa owuketshezi (kanye nesilawuli sokumunca uma sisetshenziswa), kuvimbele ukugeleza kwesiqandisi siye ku-evaporator.
(3) Iswishi evame ukuvuleka ewashini lesikhathi sokuncibilika iqhwa izovala. Lokhu kuzonikeza amandla ngokuqondile izifudumezi ze-defrost (izinhlelo ze-heater encane ye-amperage defrost defrost), noma kunikeze amandla kukhoyili yokubamba yenkontileka ye-heater ye-defrost. Amawashi esikhathi esithile akhe ezixhunyweni ezinezilinganiso eziphakeme ze-amperage ezikwazi ukunikeza amandla ngokuqondile kuzifudumezi ze-defrost, okuqeda isidingo sesixhumi esihlukile se-defrost heater.
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Umfanekiso 3 Isifudumezi sikagesi, ukunqanyulwa kweqhwa kanye nokucushwa ukubambezeleka kwefeni
I-defrost kagesi ihlinzeka ngokuncibilika okuhle kakhulu kunomjikelezo we-off, kanye nobude besikhathi esifushane. Nakulokhu, umjikelezo we-defrost uzophela ngesikhathi noma izinga lokushisa. Ngemuva kokuphela kwe-defrost kungase kube nesikhathi sokudonsa; isikhathi esifushane esizovumela ukuthi isithwathwa esincibilikisiwe siconse sisuke endaweni ye-evaporator futhi singene epanini lokudonsa amanzi. Ngaphezu kwalokho, ama-evaporator fan motors azobambezeleka ukuthi aqalise kabusha isikhathi esifushane ngemuva kokuthi umjikelezo wesiqandisi uqale. Lokhu kwenzelwa ukuqinisekisa ukuthi noma yimuphi umswakama osekhona endaweni ye-evaporator ngeke uphephethelwe esikhaleni esiqandisiwe. Kunalokho, izoba yiqhwa futhi ihlale ku-evaporator surface. Ukubambezeleka kwefeni kuphinde kwehlise inani lomoya ofudumele osakazwa endaweni esiqandisi ngemva kokuphela kwe-defrost. Ukubambezeleka kwabalandeli kungafezwa ngesilawuli sezinga lokushisa (thermostat noma i-klixon), noma ukubambezeleka kwesikhathi.
I-electric defrost iyindlela elula yokuncibilikisa uma ungasebenzi lapho ungasebenzi. Ugesi usetshenziswa, ukushisa kuyadalwa futhi isithwathwa siyancibilika sisuka ku-evaporator. Kodwa-ke, uma kuqhathaniswa ne-off cycle defrost, i-defrost kagesi inezici ezimbalwa ezingezinhle kuyo: njengezindleko zasikhathi sonke, izindleko zokuqala ezingeziwe zama-heater rods, izixhumi ezengeziwe, ama-relays kanye nokubambezeleka kokushintsha, kanye nomsebenzi owengeziwe kanye nezinto ezidingekayo ukuze kufakwe izintambo zasensimini kufanele kucatshangelwe. Futhi, izindleko eziqhubekayo zikagesi owengeziwe kufanele zikhulunywe. Isidingo somthombo wamandla wangaphandle ukunika amandla izifudumezi ze-defrost kuholela esijezisweni samandla esiphelele uma siqhathaniswa nomjikelezo wokuphuma.
Ngakho-ke, lokho kungenxa ye-off cycle, i-air defrost kanye nezindlela zokuqeda iqhwa ngogesi. Kumagazini kaNdasa sizobuyekeza ngokuningiliziwe ukuncibilika kwegesi.
Isikhathi sokuthumela: Feb-18-2025