Air conditioning ndiozizira yosungirakokulimbikitsa chitetezo ntchito ndi zodzitetezera.
The rdongosolo la efrigerationndi dongosolo losindikizidwa. Kukhazikika kwa mpweya wa firiji pambuyo pokonza kuyenera kuyang'aniridwa mosamalitsa kuti zitsimikizidwe kuti zimasungidwa bwino, zimathandizira kudalirika kwa ntchito, kuchepetsa kutaya kwa firiji, komanso kukonza chuma chantchito. The refrigerant ndi permeable kwambiri. Choncho, m'pofunika kuyang'ana kulimba kwa mpweya wa firiji.
Ndikoyenera kudziwa kuti mpweya wa nayitrogeni uyenera kugwiritsidwa ntchito kuti ukhalebe wolimba mufiriji. Oxygen ndi mpweya woyaka. Ngati mpweya utagwiritsidwa ntchito kuti ukhalebe wolimba, ukhoza kuyambitsa moto kapena kuphulika!
- Kusunga kukakamiza kosungirako kuzizira kochepa ndi kwapakati:
Ndi bwino kukakamiza mbali zonse za gasi ndi madzi nthawi imodzi. Choyamba, gwirizanitsani choyezera choponderezedwa ndi njira yamitundu yambiri ya valavu yotseketsa ya compressor yapamwamba komanso yotsika, ndikuchotsani zigawo zomwe zili mu dongosolo loyambirira zomwe siziyenera kukakamizidwa kwambiri, monga valavu yoyendetsa evaporation ndi zigawo zina.
Kutengera refrigerant ya R22 mwachitsanzo, pamene kuthamanga kwapansi ndi 1.2MPa, kuyitanitsa kwa nayitrogeni kumayimitsidwa. Pambuyo pa kuyesedwa kwa gawo lochepetsetsa kutsirizidwa, kuyesedwa kwa kuthamanga kwa dongosolo lapamwamba kumachitika. Kuthamanga kwamphamvu kwadongosolo kukakwera mpaka 2.5MPa, kuyitanitsa kwa nayitrogeni kumayimitsidwa. Sungani kupanikizika kwa 24-48h.
| Refrigeration system | ndi 134a | R22 | R401A, R402A,R404A,R407A,R407B,R407C,R507 |
| Low press system | 1.2 | 1.2 | 1.2 |
| Dongosolo la kutentha kwambiri | 2.0 | 2.5 | 3.0 |
Kusamalitsa:
M'maola a 4 oyambirira a dongosololi, kupanikizika kwa mphamvu ya kutsika sikudutsa 0.03MPa, ndiyeno kumapitirizabe kukhazikika (panthawi yoyesera, kutsika kwamphamvu chifukwa cha kusintha kwa kutentha nthawi zambiri sikudutsa kupanikizika kwa 0.01 ~ 0.03MPa), ndipo firiji dongosolo likhoza kuonedwa kuti ndiloyenera kuyesa kutayikira.
2. Mipikisano mizere dongosolo kuthamanga kusunga ntchito
Cholumikizira chamitundu yambiri chiyenera kukakamizidwa kuchokera kumbali zonse ziwiri za chitoliro cha gasi ndi chitoliro chamadzimadzi nthawi yomweyo, chifukwa kuthamanga kwa mbali zonse za gasi ndi madzi kungathe kuteteza mbali za valve monga valavu yowonjezera yamagetsi pambali ya chipinda chamkati cha dongosolo la multi-connector kuti liwonongeke. Nayitrogeni wowuma ayenera kugwiritsidwa ntchito poyesa kulimba kwa mpweya. kupanga sing'anga.
Pakuyesa kwamphamvu kwa mpweya, sikuloledwa kulumikiza mayeso a mapaipi a makina akunja. Kuthamanga kwa mayeso a R410A system ndi 4.0MPa, kuyesa kwa mpweya kumayenera kugwiritsa ntchito nayitrogeni ngati sing'anga, ndipo nayitrogeni iyenera kukhala youma. Limbikitsani pang'onopang'ono, munjira zitatu:
| Press | Nthawi | Ntchito |
| 0.3MPa | >5 mins | Kutulutsa kwakukulu kumapezeka |
| 1.5MPa | >5 mins | Kutulutsa kwakukulu kumapezeka |
| 4.0MPa | 24h | Wamng'ono zotayikira zitha kupezeka |
1. Pressurize ku 0.3MPa, khalani kwa mphindi 5 kuti muwunikenso kutayikira, ndipo mutha kupeza kutayikira kwakukulu;
2. Panikizani mpaka 1.5MPa, khalani kwa mphindi 5 kuti muyang'ane kulimba kwa mpweya, ndikupeza kutayikira kwakung'ono;
3. Pressurize mpaka 4.0MPa, khalani kwa mphindi zisanu kuti muyese mphamvu, ndipo matuza abwino angapezeke.
Mutatha kukakamiza kuti muyesedwe, sungani kupanikizika kwa maola 24, ndipo muwone ngati kuthamangako kutsika. Ngati kuthamanga sikutsika, ndikoyenerera.
R410A system test pressure gauge range iyenera kukhala pamwamba pa 4.5MPa
Kusamalitsa:
Kuwongolera Kupanikizika: Pamene kutentha kumasintha ndi 1 ° C, kuthamanga kumasintha mofanana ndi 0.01MPa. Ngati kupanikizika kuyenera kusungidwa kwa nthawi yayitali, kupanikizika kuyenera kuchepetsedwa mpaka 0.5MPa kapena pansi. Kuthamanga kwanthawi yayitali kungayambitse kutayikira kwa mbali zowotcherera, ndipo pali zoopsa zomwe zingateteze chitetezo;
Kuthamanga pambuyo pa kukakamiza kumakhudzidwa ndi kutentha kozungulira. Pamene kutentha kumakwera, kuthamanga kudzakweranso, ndipo pamene kutentha kumatsika, kutentha kumatsikanso. Ngati kutentha kwapakati kunali 10 ° C pamene kupanikizika kunasungidwa dzulo, ndipo kutentha kunakwera mwadzidzidzi kufika ku 25 ° C lero, ndiye Ngati kutentha kuli 15 ° C, mphamvu yopimitsira idzatsika, ndipo ndi yachibadwa kuti mphamvu ya gauge ikhale 38.4kgf / cm².
Amayeso a nayitrogeni akayenerera, vacuum youma dongosolo. Lumikizani vacuum gauge ndikuyendetsa pampu ya vacuum kwa maola opitilira awiri. Ngati sichingafikire -755mmHg, pitirizani kupopa kwa ola limodzi. Ikafika -755mmHg, imatha kuyikidwa kwa ola la 1, ndipo imakhala yoyenera ngati choyezera cha vacuum sichiwuka.
Nthawi yotumiza: Jun-10-2022