Cov roj tub yees: cov lus qhia dav dav

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Txhim kho lub neej ntawm cov khoom siv tub yees, ntau txoj kev siv. Nrog rau lawv, nws yuav ua tau kom txo tau qhov hnav ntawm cov khoom rubbing thiab txo cov kev sib txhuam quab yuam ntawm qhov chaw. Cov roj tub yees yog siv rau qhov no. Lubrication yog xav tau, vim nws txhim kho qhov nruj ntawm lub cuab yeej, tshem tawm cov khoom uas tau nkag mus rau hauv. Tsis tas li ntawd, cov roj nplua nyeem tshem tawm cov cua sov ntau dhau ntawm qhov chaw. Nyeem ntxiv txog cov cuab yeej no hauv kab lus.

Cov neeg tsim khoom siv cov roj hluavtaws hauv kev teeb tsa, nrog rau cov dej ntxhia. Yog tias koj sib piv cov yam ntxwv, ces thawj hom yog suav tias yog qhov zoo tshaj plaws. Cov kua dej muaj qhov qis qis, siab hermetic stability. Synthetic-based refrigeration oils yog siv los lubricate qhov chaw, thiab thaum sib xyaw nrog cov tub yees, lawv ruaj khov. Lawv tsis rhuav tshem cov ntaub ntawv uas cov khoom ntawm cov tub yees ua tau.

Destination

Cov roj tub yees tsis tsuas yog txo qhov hnav ntawm qhov chaw, tab sis kuj tsim los rauLwm yam kev siv:

1. Ib nrab cua sov dissipation. Cov roj muaj peev xwm ua kom sov zoo.
2. Tshem tawm cov khoom me me. Plua plav thiab lwm yam khoom muaj nyob rau hauv cov roj thiab yog li tsis ua mob rau cov khoom siv.
3. Txhim kho nruj. Cov kua nplaum uas ua rau lub qhov khoob ntawm cov khoom kom ya raws thiab cua tsis nkag mus rau hauv.

Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum tau ua cov dej hloov pauv. Ntxiv mus, koj tuaj yeem ua qhov no ntawm koj tus kheej thiab los ntawm kev hu rau lub chaw pabcuam.

Ntse

Thaum xaiv cov roj, nws yog ib qho tsim nyog yuav tsum xav txog tsis yog lub npe thiab tus nqi xwb. Txhua yam khoom siv xav tau nws cov khoom, suav nrog nws cov khoom. Lub ntsiab tsis muaj xws li ceev, ncuav point. Kuj tseem ceeb kom paub:

1. Refrigerant oil acidity.
2. Cloud point.
3. tshuaj ruaj khov.
4. Ntog nro.
5. Solubility.
6. Muscibility.
7. Viscosity.

Txij li thaum muaj compressor nyob rau hauv lub tub yees, koj yuav tsum xaiv cov roj uas tsim nyog sib xws. Piv txwv li, rau cov khoom siv R134a, ib tus neeg sawv cev nrog cov khoom astringent nyob rau hauv thaj tsam ntawm 15-68 centistokes yog siv.

Kev xaiv

Thaum xaiv cov roj tub yees, nws yuav tsum tau coj mus rau hauv tus account tias cov tub yees tau sib xws nrog cov khoom siv hluavtaws. Kuj tseem muaj kev vam meej. Txij li cov roj tuaj rau hauv kev sib cuag nrog cov tub yees, lawv raug rau qee yam kev cai:

1. Cov khoom lag luam zoo tsis suav nrog hauv evaporator. Nwscirculates los ntawm lub system, thiab txawm nyob rau hauv qis kub yuav ua kua.
2. Cov khoom yuav tsum khov. Cov khoom yuav tsum tau muab nchuav rau hauv lub tub yees yuav tsum muaj qhov system sealing muaj nuj nqi. Nco ntsoov tias qhov kub thiab txias hauv compressor yog siab.
3. Cov cuab yeej yuav tsum tsim nyog rau ib hom tub yees.
4. Lub flocculation kub ntawm cov roj zoo yog qhov qis heev.
5. txhais tau tias yuav tsum muaj tus lej acid tsawg kawg nkaus. Qhov no siv rau refraction, toxicity, kub.

Hauv kev teeb tsa feem ntau, cov tub yees yog freon thiab freon. Kev xaiv cov roj tub yees kom zoo kom ntseeg tau tias lub compressor yuav ua haujlwm yam tsis muaj kev ua haujlwm. Cov khoom xyaw yog tov nrog cov tub yees. Yog tias nws muaj cov chav kawm CFC, HCFC, HFC, ces yuav tsum tau siv ntau hom refrigerant fluids nyob rau hauv lub installation.

Cov khoom zoo li no tau nthuav tawm nyob rau hauv daim ntawv ntawm cov khoom sib xyaw ua los ntawm cov hluavtaws hydrocarbons thiab cov roj ntxhia. Tsis muaj additives nyob rau hauv cov khoom no. Cov no yog cov roj tub yees tshwj xeeb uas cov kua dej ntxhia tsis tuaj yeem siv. Semi-synthetic khoom yog tsim rau yuav luag txhua yam khoom siv nyob rau hauv lub neej txhua hnub thiab kev lag luam.

Bitzer tub yees cov roj tsim nyog rau cov cuab yeej siv niaj hnub xav tau. Lawv txo qhov hnav ntawm cov khoom txav. Nrog lawv, nws yuav ua tau kom ntev lub neej ntawm installation.

Mineral oils

Cov tub yees R12 thiab R22 yog siv nrog cov khoom ntxhia. Cov khoom no yog pheej yig. Naphthenic-based refrigeration roj yog refined, yog li ntawdlawv yog cov zoo dua.

Cov khoom tsis suav nrog cov khoom ntxiv. Rau nws cov khoom siv, cov roj hauv paus yog siv. Lawv yog refined, uas ua rau cov khoom uas zoo heev rau lubrication. Txog niaj hnub no, cov kua hauv qab no yog Shell Clavus G thiab Mobil Gargoyle Arctic, Lunaria FR thiab Suniso GS. Cov khoom no tau pom zoo los ntawm cov tuam txhab compressor.

Semi-synthetic thiab hluavtaws khoom

Virginia AB, Plhaub Clavus SD 22-12 yog tsim rau nchuav. Cov cuab yeej ua haujlwm zoo nrog lawv. Cov roj hluavtaws rau cov tub yees compressors muaj hygroscopicity tsawg thiab sib xws nrog cov polymers. Los ntawm cov yam ntxwv, thermal stability zoo heev tuaj yeem paub qhov txawv.

Cov kua hauv kev sib cuag nrog cov hlau tsis muaj hlau tsim lawv txoj kev tiv thaiv corrosion. Cov khoom muaj zoo heev hluav taws xob insulating zog. Cov roj muaj kev tiv thaiv zoo heev rau hydrolysis. Cov kua hluavtaws tshiab tau tsim nyob rau tib lub sijhawm raws li HFC cov tub yees. Lawv suav hais tias muaj kev nyab xeeb rau txheej ozone. Cov no suav nrog:

1. R23.
2. R134a.
3. R404a.
4. R407c.
5. R410a.
6. R507.

Cov khoom siv hluavtaws no lav lub neej ntev ntawm cov cuab yeej siv vim tias tsis muaj cov khoom seem insoluble tsim. Qhov no txhais tau hais tias cov khoom sab hauv ntawm qhov system yuav huv si. Rau cov txheej txheem piston, nws yog ib qho tsim nyog yuav tau yuav cov khoom uas muaj viscosity raws li ISO 22, 32. Cov kua 46 thiab 68 kuj tseem siv. Lawv tau tov nrog freon, tuaj yeem siv rau kev sib xyaw nrog freon. Thaum siv rau cov tshuab nrog cov evaporators qhuav, cov kua rov qab mus rau lub compressor.

Kev npaj

Kho yuav tsum tau ua tom qab sab laj nrog tus kws tshaj lij. Koj yuav tsum tau nyeem cov lus qhia. Qhov no yuav tsum tau ua yam tsis poob thaum muaj kev lav phib xaub, vim tias tom qab ntawd koj tuaj yeem tiv tauj lub chaw pabcuam. Txhua yam koj yuav tsum tau npaj:

1. Charge hose.
2. Reliable pressure gauge.
3. Lub tshuab nqus tsev vacuum.

fluid change

Kev rov ua dua yog ua raws li cov kauj ruam hauv qab no:

1. Nqus yuav tsum tau tsim nyob rau hauv lub compressor. Yog li ntawd, 2 qhov kev pabcuam li qub ntawm qhov system yuav tsum raug kaw. Lub tshuab nqus tsev twj tso kua mis txuas nrog ib qho, nws yuav tsum ua haujlwm kom txog rau thaum qhov ntsuas qhov zoo tshaj plaws tau teeb tsa. Yog tias tus nqi nce mus txog 0.1 bar, lub twj tso kua mis yuav tsum tau muab tshem tawm. Tom qab ntawd koj yuav tsum tshem tawm cov roj ntsaws. Nws yog tsim nyog los ntsia hlau rau ntawm lub hose nruab nrog kaw-off valve.
2. Koj yuav tsum qhib lub tshuab nqus tsev me me kom cov tub yees vapor nkag mus rau hauv compressor. Thaum muaj qhov zoo me ntsis, lub valve yuav tsum raug kaw.
3. Ntawm lub hose nram qab, uas yuav tsum tau tshem tawm cua, nws yog ib qho tseem ceeb rau qhib lub kaw-off valve. Qhov kawg ntawm lub hose yuav tsum tau qis rau hauv qab ntawm lub thawv roj, kaw lub valve kaw.
4. Tom qab ntawd lub tshuab nqus tsev pib. Thaum lub siab tsawg dua atmospheric, lub kaw-off valve yuav tsum qhib. Roj yog muab rau chav tsev, qhov no tuaj yeem ua taukos nrog lub qhov rais saib. Koj yuav tsum kaw lub kaw-off valve thaum cov roj nce mus rau qib uas yuav tsum tau ua.
5. Lub twj tso kua mis nres. Qhib lub valve los tsim lub siab zoo. Lub charger hose yuav tsum tau muab tshem tawm. Thaum kawg, koj yuav tsum tau ceev cov roj ntsaws.

Zaj lus

Yog tias cov thev naus laus zis tau ua raws, noo noo thiab huab cua yuav tsis tshwm sim hauv kev teeb tsa. Xav tau ntxiv kua? Siv lub syringe rau qhov no. Lub kaw lus xav tau kev hloov roj, rau cov tub yees compressors koj yuav tsum tau yuav hauv khw tshwj xeeb. Kev ua haujlwm kuj tau ua hauv cov chaw pabcuam. Kev ua tau zoo ua kom lub neej ntev ntawm cov khoom siv tub yees.