Da farko, nazarin gazawar da kuma maganin zafin ajiyar sanyi ba ya raguwa
Zafin firiji ya yi yawa. Bayan dubawa, zafin rumbunan ajiya guda biyu ya kasance -4°C zuwa 0°C kawai, kuma an buɗe bawuloli na solenoid na ruwa na rumbunan ajiya guda biyu. Mashin ɗin yana farawa akai-akai, amma yanayin bai inganta ba lokacin da aka canza zuwa wani mashin ɗin, amma akwai sanyi mai kauri akan bututun iska mai dawowa. Bayan shiga rumbunan ajiya guda biyu, an gano cewa sanyi mai kauri ya samo asali akan na'urorin da ke tururi, kuma yanayin ya inganta bayan ya narke. A wannan lokacin, lokacin farawa da zafin ajiya na mashin ɗin ya ragu, amma ba shi da kyau. Sannan duba iyakokin sama da ƙasa na aikin mai sarrafa ƙaramin matsi, kuma an gano cewa rashin daidaiton shine 0.11-0.15npa, wato, dakatar da mashin ɗin lokacin da matsin lamba ya kasance 0.11mpa, kuma fara mashin ɗin lokacin da matsin lamba ya kasance 0.15pa. Matsakaicin zafin jiki na tururi da ya dace shine kusan -20°C zuwa 18°C. Babu shakka, wannan saitin yayi yawa kuma bambancin girman ya yi ƙanƙanta. Saboda haka, a sake daidaita iyakokin sama da ƙasa na mai sarrafa ƙarancin matsin lamba. Ƙimar da aka daidaita ita ce 0.05-0.12mpa, kuma yanayin zafin ƙafewar da ya dace shine kusan -20°C-18°C. Bayan haka, sake kunna tsarin kuma a ci gaba da aiki yadda ya kamata.
2. Dalilai da dama da ke sa a riƙa amfani da na'urorin sanyaya daki akai-akai
Ana kunna damfara masu aiki ta hanyar relay mai girma da ƙarancin wutar lantarki, amma bayan an toshe yawancin relay mai girma, dole ne a sake saitawa da hannu don sake kunna damfara. Saboda haka, farawa da tsayawa akai-akai na damfara ba yawanci yana faruwa ne ta hanyar relay mai girma ba, amma galibi ta hanyar relay mai ƙarancin wutar lantarki:
1. Bambancin zafin jiki tsakanin girman relay da relay mai ƙarancin wutar lantarki ya yi ƙanƙanta, ko kuma bambancin zafin jiki tsakanin girman relay da relay mai ƙarancin wutar lantarki ya yi ƙanƙanta;
2. Bawul ɗin tsotsa da shaye-shaye ko kuma bawul ɗin aminci na matsewar yana ɓuya, don haka bayan rufewa, iskar gas mai ƙarfi za ta ɓuya cikin tsarin matsewar ƙasa, kuma matsin zai tashi da sauri don fara matsewar ƙasa. Bayan farawa, matsin lambar tsarin ƙarancin wutar lantarki yana raguwa da sauri, matsewar ƙaramin wutar lantarki yana aiki, kuma matsewar ta tsaya;
3. Bawul ɗin maido da mai ta atomatik na mai raba mai yana zubewa;
4. Filogin kankara na bawul mai faɗaɗawa.
3. Matsewar tana aiki na tsawon lokaci
Babban dalilin da ke haifar da dogon lokacin aiki na damfara shine rashin isasshen ƙarfin sanyaya na'urar ko kuma yawan zafi da ke cikin ajiyar sanyi, musamman:
1. Mai fitar da iska yana da sanyi sosai ko kuma yana adana mai da yawa;
2. Zagayen injinan sanyaya daki a cikin tsarin bai isa ba, ko kuma bututun mai sanyaya daki mai ruwa bai yi santsi ba;
3. Saboda zubewar faranti na bawul ɗin shiga da fitar da hayaki, zubar da zoben piston mai tsanani ko gazawar da matsewar ta yi wajen ƙara nauyin, isar da iskar gas na matsewar ya ragu sosai;
4. Layin kariya daga zafi na ajiyar sanyi ya lalace, ƙofar ba a rufe ta sosai ba ko kuma an saki adadi mai yawa na abubuwa masu zafi, wanda ke haifar da yawan zafi na ajiyar sanyi;
5. Relay ɗin zafin jiki, relay mai ƙarancin ƙarfin lantarki ko bawul ɗin solenoid na ruwa da sauran sassan sarrafawa suna da lahani, wanda ke sa zafin ajiya ya kai ga ƙasan iyaka. Amma damfara ba zai iya tsayawa da lokaci ba.
4. Bayan da matsewar ta tsaya, matsin lamba mai yawa da ƙasa za su daidaita da sauri
Wannan ya faru ne saboda tsananin zubewa ko karyewar faranti na tsotsa da na shaye-shaye, fashewar gasket tsakanin matsin lamba mai yawa da ƙarancin matsin lamba na silinda, da kuma shigar iskar gas mai ƙarfi cikin sauri cikin ɗakin tsotsa bayan rufewa.
5. Ba za a iya loda ko sauke na'urar damfara ba yadda aka saba
Ga tsarin daidaita makamashi wanda matsin mai ke sarrafawa, babban dalilin shine: matsin man mai mai laushi ya yi ƙasa sosai. (Gabaɗaya yana faruwa ne sakamakon yawan sharewar bearing da sharewar famfo), ana iya magance shi ta hanyar matse bawul ɗin daidaita matsin mai; piston ɗin silinda mai saukewa yana zubar da mai da gaske, kuma da'irar mai ta toshe; silinda mai ya makale a kan piston ko wasu hanyoyin; bawul ɗin solenoid ba ya aiki yadda ya kamata, Ko kuma tsakiyar ƙarfe yana da sauran maganadisu.
6. Matsalar tsarin firiji
1. Frosting a kan evaporator coil: frosting a kan evaporator coil bai kamata ya wuce 3mm ba. Idan frosting ya yi kauri sosai, juriyar zafi zai ƙaru, wanda ke haifar da wani bambanci tsakanin evaporator da ajiyar sanyi. Firji ba zai iya shan isasshen zafi don ƙafewa a cikin evaporator ba. Yawan refrigerant yana shan zafi a kan bututun dawowa kuma yana ƙafewa, wanda ke ƙara frosting na bututun dawowa; Bugu da ƙari, zafi mai zafi da bawul ɗin faɗaɗa ke ji ƙarami ne ko ma sifili, wanda ke sa ya rufe ko rufe, kuma compressor zai tsaya a ƙaramin matsin lamba nan ba da jimawa ba. Duk da haka, bawul ɗin solenoid ba a rufe shi ba, kuma har yanzu akwai wani nau'in zafi a cikin ajiyar sanyi. Bayan matsin lamba na evaporator ya tashi, compressor zai sake farawa, yana haifar da farawa akai-akai. Da kauri sanyi a kan evaporator, mafi muni wannan yanayin zai kasance. A zahiri, sanyin da ke kan na'urorin evaporator na rumbunan ajiyar sanyi guda biyu masu ƙarancin zafin jiki a cikin wannan tsarin ya yi kauri sosai, yana kaiwa 1-2cm, wanda hakan ke shafar canja wurin zafi sosai kuma ba zai iya rage zafin ajiya ba. Bayan narkewar, sake kunna tsarin, kuma zafin rumbunan ajiya guda biyu masu ƙarancin zafin jiki zai iya raguwa zuwa 6-5°C.
2. Darajar saitin na'urar sarrafawa mai ƙarfi da ƙasa ba daidai ba ne: na'urar sanyaya daki da ake amfani da ita a cikin kayan aikin sanyaya shine R22, kuma matsin lamba mai ƙarfi (ƙasa) galibi ana zaɓar ta azaman matsin lamba na ma'aunin 1.7-1.9mpa. Matsi (ƙasa) na na'urar sake kunna ƙaramin ƙarfin lantarki na iya zama matsin lamba mai cikewa na refrigerant wanda ya dace da yanayin zafin ƙafewa na ƙira -5°C (bambancin zafin canja wurin zafi), amma gabaɗaya ba ƙasa da matsin lamba na ma'aunin 0.01 MPa ba. Bambancin kewayon daidaitawa na maɓallin ƙaramin ƙarfin lantarki gabaɗaya shine 0.1-0.2MPa. Wani lokaci sikelin ƙimar saita matsi ba daidai bane, kuma ainihin ƙimar aikin yana ƙarƙashin ƙimar da aka auna yayin gyara kurakurai. Lokacin gwada na'urar sarrafawa mai ƙarancin matsin lamba, a hankali rufe bawul ɗin rufe tsotsa na na'urar sanyaya, kuma ku kula da ƙimar nuni na ma'aunin matsin lamba na tsotsa. Ƙimar nuni lokacin da aka dakatar da na'urar sanyaya daki shine iyakokin sama da ƙasa na na'urar sanyaya ƙasa. Domin gwada mai sarrafa matsin lamba mai yawa, a hankali a rufe bawul ɗin dakatar da fitarwa na mai kwampreso, sannan a karanta karatun ma'aunin matsin lamba lokacin da mai kwampreso ya tsaya, wato, matsin lamba mai yanke matsin lamba mai yawa. Tabbatar da ingancin ma'aunin matsin lamba kafin gwajin; don tabbatar da aminci, bai kamata a rufe bawul ɗin fitarwa gaba ɗaya ba.
3. Rashin isasshen firiji a cikin tsarin: A cikin na'ura mai tankin ajiya na ruwa, saboda aikin daidaitawa na tankin ajiya na ruwa, sai dai idan saboda ƙarancin firiji mai tsanani, ruwan da tankin ajiya na ruwa ke bayarwa ba zai iya ci gaba da aiki ba, wanda zai shafi aikin na'urar na yau da kullun. "Ƙarancin firiji", wato ƙarancin ruwa, ba zai yi tasiri mai mahimmanci ga aikin tsarin ba. Duk da haka, a cikin na'ura ba tare da tankin ajiya na ruwa ba, tunda adadin firiji a cikin tsarin kai tsaye yana ƙayyade matakin ruwa na firiji a cikin na'urar, wanda hakan ke shafar aikin na'urar da kuma matakin sanyaya ruwa na na'urar, lokacin da adadin firiji a cikin tsarin Idan bai isa ba, babu makawa zai haifar da canje-canje masu zuwa a cikin yanayin aiki na kayan aiki:
(1) Matsewar na'urar tana ci gaba da aiki, amma ba za a iya rage zafin wurin ajiya ba;
(2) Matsin shaye-shayen na matsewa ya ragu;
(3) Matsin tsotsar mashin ɗin ya yi ƙasa, zafin tsotsar ya ƙaru, sanyin da ke bayan mai tururi yana narkewa, kuma kan silinda mai tururi yana zafi;
(4) Ana iya ganin adadi mai yawa na kumfa a tsakiyar kwararar ruwa na alamar samar da ruwa;
(5) A bayyane yake cewa matakin ruwa na na'urar sanyaya iska ba shi da yawa.
Idan aka daidaita buɗewar bawul ɗin faɗaɗa zafi sosai, matsin tsotsa zai ragu, za a yi ƙanƙara da narke mai ƙafewa, sannan a narke bututun tsotsa. Saboda haka, idan ba za a iya lura da matakin sanyaya daidai ba. Domin a tantance ko adadin sanyaya a cikin tsarin bai isa ba, ana iya amfani da waɗannan hanyoyin:
Dakatar da amfani da bawul ɗin faɗaɗa zafi, buɗe kuma daidaita bawul ɗin faɗaɗa hannu yadda ya kamata, sannan ka lura da aikin tsarin don ganin ko zai iya komawa yadda ya kamata. Idan zai iya komawa yadda ya kamata, yana nufin bawul ɗin faɗaɗa zafi ba a daidaita shi yadda ya kamata ba, in ba haka ba akwai rashin firiji a cikin tsarin. Rashin isasshen firiji a cikin tsarin (idan ba caji mai isa ba) shine sanadin zubewar. Saboda haka, bayan an tabbatar da cewa firijin tsarin bai isa ba, ya kamata a fara gano zubewar, sannan a ƙara firiji bayan an kawar da zubewar.
Lokacin Saƙo: Maris-17-2023
