Udindo wa zigawo zikuluzikulu za chowumitsira firiji
1. Refrigeration kompresa
Refrigeration compressor ndi mtima wa firiji system, ndipo ma compressor ambiri masiku ano amagwiritsa ntchito hermetic reciprocating compressor.Kukweza refrigerant kuchokera kutsika mpaka kupanikizika kwambiri ndikuzungulira firiji mosalekeza, dongosololi limatulutsa kutentha kwamkati kupita ku chilengedwe pamwamba pa kutentha kwa dongosolo.
2. Condenser
Ntchito ya condenser ndi kuziziritsa mpweya wothamanga kwambiri, wotentha kwambiri wa refrigerant wotulutsidwa ndi kompresa ya refrigerant mufiriji yamadzimadzi, ndipo kutentha kwake kumachotsedwa ndi madzi ozizira.Izi zimathandiza kuti firiji ipitirire mosalekeza.
3. Evaporator
Evaporator ndiye gawo lalikulu losinthira kutentha kwa chowumitsira firiji, ndipo mpweya woponderezedwa umatsitsidwa mwamphamvu mu evaporator, ndipo nthunzi yambiri yamadzi imakhazikika ndikukhazikika m'madzi amadzimadzi ndikutulutsidwa kunja kwa makinawo, kuti mpweya woponderezedwa uume. .The otsika-anzanu refrigerant madzi amakhala otsika-anzanu refrigerant nthunzi pa gawo kusintha evaporator, kuyamwa ozungulira kutentha pa gawo kusintha, potero kuzirala wothinikizidwa mpweya.
4. Thermostatic expansion valve (capillary)
Thermostatic expansion valve (capillary) ndi njira yopumira ya firiji.Mu chowumitsira firiji, kupereka kwa evaporator refrigerant ndi wowongolera wake amazindikiridwa kudzera mu makina opondereza.The throttling limagwirira amalola firiji kulowa evaporator kuchokera mkulu-kutentha ndi mkulu-anzanu madzi.
5. Chotenthetsera kutentha
Zowumitsira mafiriji zambiri zimakhala ndi chosinthira kutentha, chomwe ndi chosinthira kutentha chomwe chimasinthanitsa kutentha pakati pa mpweya ndi mpweya, nthawi zambiri chimakhala chowotcha (chomwe chimadziwikanso kuti chipolopolo ndi chubu).Ntchito yaikulu ya chotenthetsera kutentha mu chowumitsira firiji ndi "kubwezeretsa" mphamvu yoziziritsa yomwe imatengedwa ndi mpweya woponderezedwa pambuyo pozizira ndi evaporator, ndikugwiritsa ntchito gawo ili la mphamvu yoziziritsira kuziziritsa mpweya wopanikizika pa kutentha kwakukulu kunyamula kuchuluka kwa nthunzi wamadzi (ndiko kuti, mpweya wokhazikika wokhazikika wotuluka mu kompresa ya mpweya, utakhazikika ndi chozizira chakumbuyo cha kompresa ya mpweya, kenako kupatulidwa ndi mpweya ndi madzi nthawi zambiri umakhala pamwamba pa 40 ° C), potero kuchepetsa kutentha kwa firiji ndi kuyanika dongosolo ndi kukwaniritsa cholinga chopulumutsa mphamvu.Kumbali ina, kutentha kwa mpweya wocheperako wopanikizidwa mu chotenthetsera kutentha kumabwezeretsedwa, kotero kuti khoma lakunja la payipi yonyamula mpweya woponderezedwa silimayambitsa zochitika za "condensation" chifukwa cha kutentha pansi pa kutentha kozungulira.Kuonjezera apo, kutentha kwa mpweya woponderezedwa kukwera, kutentha kwa mpweya woponderezedwa pambuyo poyanika kumachepetsedwa (nthawi zambiri zosakwana 20%), zomwe zimapindulitsa kuteteza dzimbiri lachitsulo.Ena owerenga (mwachitsanzo ndi mpweya kupatukana zomera) wothinikizidwa mpweya ndi otsika chinyezi okhutira ndi kutentha otsika, kotero choumitsira firiji salinso okonzeka ndi kutentha exchanger.Popeza chotenthetsera kutentha sichimayikidwa, mpweya wozizira sungathe kubwezeretsedwanso, ndipo kutentha kwa evaporator kumawonjezeka kwambiri.Pankhaniyi, mphamvu ya compressor firiji sikuyenera kuwonjezeredwa kuti ipereke mphamvu, komanso zigawo zina za firiji zonse (evaporator, condenser ndi throttling components) ziyenera kuwonjezeredwa moyenerera.Kuchokera pakuwona mphamvu zowonjezera mphamvu, nthawi zonse timayembekeza kuti kutentha kwapamwamba kwa chowumitsira firiji, ndibwino (kutentha kwapamwamba, kusonyeza mphamvu zowonjezera mphamvu), ndipo ndibwino kuti palibe kusiyana kwa kutentha pakati pa cholowera ndi kutuluka.Koma kwenikweni, sizingatheke kukwaniritsa izi, pamene kutentha kwa mpweya kumakhala pansi pa 45 ° C, si zachilendo kuti kutentha kwa mpweya ndi kutuluka kwa chowumitsira firiji kumasiyana ndi 15 ° C.
Compressed Air Processing
Mpweya wopanikizidwa → zosefera zamakina→ zosinthira kutentha (kutulutsa kutentha), → zotenthetsera → zolekanitsa zamadzimadzi za gasi→ zosinthira kutentha (kumayamwa kutentha), → zosefera zomakina → matanki osungira gasi
Kusamalira ndi kuyang'anira: sungani kutentha kwa mame a chowumitsira mufiriji pamwamba pa ziro.
Kuchepetsa kutentha kwa mpweya woponderezedwa, kutentha kwa evaporation kwa firiji kuyeneranso kukhala kotsika kwambiri.Pamene chowumitsira firiji chimaziziritsa mpweya wothinikizidwa, pali wosanjikiza wa condensate ngati filimu pamwamba pa chipsepse cha evaporator liner, ngati kutentha kwa pamwamba pa chipsepsecho kuli pansi pa ziro chifukwa cha kuchepa kwa kutentha kwa evaporator, pamwamba. condensate ikhoza kuzizira, panthawiyi:
A. Chifukwa cha kumangiriridwa kwa ayezi wokhala ndi matenthedwe ang'onoang'ono kwambiri pamwamba pa chikhodzodzo chamkati cha evaporator, kutentha kwa kutentha kumachepetsedwa kwambiri, mpweya woponderezedwa sungathe kukhazikika bwino, ndipo chifukwa cha kutentha kosakwanira, kutentha kwa mpweya wa refrigerant kungathe kuchepetsedwa, ndipo zotsatira za kuzungulira koteroko zidzabweretsa zotsatira zoipa zambiri pa firiji (monga "kuponderezedwa kwamadzi");
B. Chifukwa cha malo ang'onoang'ono pakati pa zipsepse mu evaporator, pamene zipsepsezo zimaundana, malo ozungulira mpweya woponderezedwa adzachepetsedwa, ndipo ngakhale njira ya mpweya idzatsekedwa pazovuta kwambiri, ndiko kuti, "kutsekeka kwa ayezi";Mwachidule, kutentha kwa kutentha kwa chowumitsira firiji kuyenera kukhala pamwamba pa 0 ° C, pofuna kuteteza kutentha kwa mame kukhala otsika kwambiri, chowumitsira firiji chimaperekedwa ndi chitetezo chodutsa mphamvu (yotheka ndi bypass valve kapena fluorine solenoid valve). ).Kutentha kwa mame kukatsika kuposa 0 ° C, valavu yodutsa (kapena valavu ya fluorine solenoid) imatseguka yokha (kutsegulira kumawonjezeka), ndipo kutentha kosasunthika kosasunthika komanso kutentha kwambiri kwa refrigerant kumalowetsedwa mwachindunji munjira ya evaporator. (kapena thanki yolekanitsa yamadzi a gasi pa cholowera cha kompresa), kuti kutentha kwa mame kumakwezedwa kupitilira 0 °C.
C. Kuchokera pamalingaliro akugwiritsa ntchito mphamvu zamagetsi, kutentha kwa evaporation kumakhala kotsika kwambiri, zomwe zimapangitsa kuchepa kwakukulu kwa coefficient ya refrigeration ya kompresa ndikuwonjezera kugwiritsa ntchito mphamvu.
Yang'anani
1. Kusiyana kwa kuthamanga pakati pa cholowera ndi kutulutsa kwa mpweya woponderezedwa sikudutsa 0.035Mpa;
2. Evaporation pressure gauge 0.4Mpa-0.5Mpa;
3. High pressure gauge 1.2Mpa-1.6Mpa
4. Yang'anani pafupipafupi ngalande ndi zimbudzi
Nkhani ya Opaleshoni
1 Onani musanayambitse
1.1 Mavavu onse a dongosolo la netiweki ya chitoliro ali mu standby yabwino;
1.2 Valavu yamadzi ozizira imatsegulidwa, kuthamanga kwa madzi kuyenera kukhala pakati pa 0.15-0.4Mpa, ndipo kutentha kwa madzi kuli pansi pa 31Ċ;
1.3 The refrigerant high pressure mita ndi refrigerant low pressure mita pa dashboard ali ndi zizindikiro ndipo kwenikweni ofanana;
1.4 Yang'anani mphamvu zamagetsi, zomwe sizingadutse 10% ya mtengo wake.
2 Ndondomeko ya boot
2.1 Akanikizire batani chiyambi, ndi AC contactor akuchedwa kwa mphindi 3 ndiyeno anayamba, ndi refrigerant kompresa akuyamba kuthamanga;
2.2 Yang'anani pa dashboard, refrigerant high-pressure mita iyenera kukwera pang'onopang'ono kufika pafupifupi 1.4Mpa, ndi refrigerant low-pressure mita iyenera kutsika pang'onopang'ono kufika pa 0.4Mpa;panthawiyi, makinawo adalowa m'malo ogwirira ntchito.
2.3 Chowumitsa chitatha kwa mphindi 3-5, choyamba mutsegule valavu ya mpweya wolowera pang'onopang'ono, kenaka mutsegule valavu ya mpweya wotuluka molingana ndi kuchuluka kwa katundu mpaka mutadzaza.
2.4 Onani ngati zoyezera mpweya wolowera ndi potuluka zili bwino (kusiyana pakati pa kuwerengera kwa mita ziwiri za 0.03Mpa kuyenera kukhala koyenera).
2.5 Onani ngati ngalande ya kukhetsa basi ndi yabwinobwino;
2.6 Yang'anani momwe ntchito yowumitsira imagwirira ntchito nthawi zonse, lembani mpweya wolowetsa mpweya ndi kutulutsa mpweya, kuthamanga kwakukulu ndi kutsika kwa malasha ozizira, ndi zina zotero.
3 Njira yotseka;
3.1 Tsekani valavu yotulutsa mpweya;
3.2 Tsekani valavu yolowera mpweya;
3.3 Dinani batani loyimitsa.
4 Kusamala
4.1 Pewani kuthamanga kwa nthawi yayitali popanda katundu.
4.2 Osayambitsa kompresa ya refrigerant mosalekeza, ndipo kuchuluka kwa zoyambira ndi kuyimitsa pa ola sikuyenera kupitilira nthawi 6.
4.3 Kuti muwonetsetse kuti gasi ndi yabwino, onetsetsani kuti mukutsatira dongosolo loyambira ndikuyimitsa.
4.3.1 Yambani: Lolani chowumitsira chiyendetse kwa mphindi 3-5 musanatsegule kompresa ya mpweya kapena valavu yolowera.
4.3.2 Kutseka: Zimitsani mpweya wopondereza kapena valavu yotulutsira kaye ndikuzimitsa chowumitsira.
4.4 Pali mavavu odutsa muukonde wa mapaipi omwe amatambasula polowera ndi potulukira chowumitsira, ndipo valavu yodutsa iyenera kutsekedwa mwamphamvu panthawi yogwira ntchito kupeŵa mpweya wosatetezedwa kulowa mu netiweki yapaipi yapaipi yotsika.
4.5 Kuthamanga kwa mpweya sikudutsa 0.95Mpa.
4.6 Kutentha kwa mpweya wolowera sikudutsa madigiri 45.
4.7 Kutentha kwa madzi ozizira sikudutsa madigiri 31.
4.8 Chonde musayatse kutentha komwe kumakhala kotsika kuposa 2Ċ.
4.9 Kuyika kwa relay nthawi mu kabati yowongolera magetsi sikuyenera kuchepera mphindi zitatu.
4.10 General ntchito bola inu kulamulira "kuyamba" ndi "kusiya" mabatani
4.11 Chowumitsira chowumitsira mufiriji chozizira ndi mpweya chimawongoleredwa ndi chosinthira, ndipo ndizabwinobwino kuti faniyo isatembenuke pomwe chowumitsira firiji chimagwira ntchito potentha kwambiri.Pamene refrigerant high pressure ikuwonjezeka, fan imayamba yokha.
Nthawi yotumiza: Aug-26-2023