Masisitimu mazhinji ekutonhodza mhepo nefiriji anoisa mayunitsi awo ekutonhodza kunze nekuda kwezvikonzero zviviri zvikuru. Chekutanga, izvi zvinoshandisa tembiricha inotonhorera iri kunze kubvisa kumwe kupisa kunotorwa ne evaporator, uye chechipiri, kuderedza kusvibiswa kweruzha.
Zvikamu zvekudziisa mvura zvinowanzova nemacompressor, macondenser coils, mafeni ekunze ekudziisa mvura, macontactors, ma starting relays, ma capacitor, uye ma solid state plates ane macircuits. Chinogamuchira chinowanzo batanidzwa muchikamu chekudziisa mvura chemuchina wekudziya. Muchikamu chekudziisa mvura, compressor inowanzova neheater yakabatana nechepasi payo kana ku crankcase. Rudzi urwu rweheater runowanzo nzihita yecrankcase.
Iyohita ye crankcase ye compressorchinhu chinodziisa simba chinowanzo sungirirwa pasi pe crankcase kana kuiswa mugomba riri mukati me crankcase ye compressor.Mahita eCrankcaseanowanzo kuwanikwa pamacompressor apo tembiricha yemhepo yakaderera pane tembiricha yekushanda kwesystem ye evaporator.
Oiri ye crankcase kana oiri ye compressor ine mabasa akawanda akakosha. Kunyangwe refrigerant iri mvura inoshanda inodiwa pakutonhodza, oiri inodiwa kuti ikwize zvikamu zvemuchina zvinofamba zve compressor. Mumamiriro ezvinhu akajairwa, pane mafuta mashoma anobuda kubva mu crankcase ye compressor uye achitenderera ne refrigerant mu system yese. Nekufamba kwenguva, kumhanya kwakakodzera kwe refrigerant kuburikidza ne system tubes kuchaita kuti mafuta aya anobuda adzokere mu crankcase, uye ndicho chikonzero nei oiri ne refrigerant zvichifanira kunyungudika. Panguva imwe chete, zvisinei, kunyungudika kwe oiri ne refrigerant kunogona kukonzera rimwe dambudziko re system. Dambudziko nderekufamba kwe refrigerant.
Kutama-tama chinhu chinoitika nguva nenguva. Iyi inzira iyo mafiriji emvura uye/kana emhepo anotama kana kudzokera ku crankcase yecompressor uye kusuction lines panguva yekudzima kwecompressor. Munguva yekudzima kwecompressor, kunyanya panguva yekudzima kwenguva refu, refrigerant inofanira kutamiswa kana kutamiswa kuenda kune kumanikidzwa kwakaderera. Muzvisikwa, mvura inoyerera kubva kunzvimbo dzine kumanikidzwa kwakakwira kuenda kunzvimbo dzine kumanikidzwa kwakaderera. Crankcase inowanzova nedzvinyiriro yakaderera pane evaporator nekuti ine mafuta. Tembiricha inotonhorera inowedzera kumanikidzwa kwakaderera kwemhepo uye inobatsira kusanganisa utsi hwerefrigerant mumvura iri mucrankcase.
Oiri iri mufiriji pachayo ine kumanikidzwa kwakaderera kwemhepo, uye ingave iri muchimiro chemhepo kana kuti chemvura, inoyerera ichienda kumafuta ari mufiriji. Kutaura zvazviri, kumanikidzwa kwemhepo kwemafuta ari mufiriji kwakaderera zvekuti kunyangwe kana vacuum ye100 microns ikadhonzwa pafiriji system, haizopwanyi. Kupwa kwemamwe mafuta ari mufiriji kunoderedzwa kusvika kuma microns mashanu kusvika gumi. Kana mafuta asina kumanikidzwa kwemhepo kwakaderera kudaro, anopwanya pese panenge paine kumanikidzwa kwakaderera kana vacuum mu crankcase.
Sezvo kufamba kwemufiriji kuchigona kuitika nemweya wemufiriji, kufamba kunogona kuitika pakukwira kana kudzika. Kana mweya wemufiriji wasvika pa crankcase, unonyudzwa wobatanidzwa mumafuta nekuda kwekukanganisika kwemafuta emufiriji/oiri.
Munguva yekutenderera kwenguva refu yakavharwa, refrigerant yemvura inoumba jira rakatsetseka pasi pemafuta ari mucrankcase. Izvi zvinodaro nekuti mafiriji emvura anorema kupfuura mafuta. Munguva yekumira kwecompressor kwenguva pfupi, refrigerant inotama haina mukana wekudzikama pasi pemafuta, asi inoramba ichisanganiswa nemafuta ari mucrankcase. Munguva yekupisa uye/kana mwedzi inotonhora apo air conditioning isingadiwi, varidzi vedzimba vanowanzo dzima connection yemagetsi kune air-conditioning outdoor condensing unit. Izvi zvichaita kuti compressor isave ne crankcase heat nekuti crankcase heater inenge yapera simba. Kutama kwerefrigerant kuenda kucrankcase kuchaitika munguva iyi yakareba.
Kana mwaka wekutonhodza watanga, kana muridzi wemba akasadzosera circuit breaker maawa angangoita 24-48 usati watanga kushandisa air conditioning unit, furo rakawanda uye kumanikidzwa zvichaitika nekuda kwekufamba kwenguva refu kwe refrigerant isingatenderere.
Izvi zvinogona kukonzera kuti crankcase irasikirwe nemafuta akakodzera, zvakare kukuvadza mabheringi uye kukonzera kutadza kwemuchina mukati mecompressor.
Ma crankcase heater akagadzirirwa kubatsira kurwisa kufamba kwe refrigerant. Basa re crankcase heater nderekuchengetedza oiri mu compressor crankcase patembiricha yakakwira kupfuura chikamu chinotonhora zvikuru che system. Izvi zvichaita kuti crankcase ive nekumanikidzwa kwakakwira zvishoma kupfuura mamwe ma system. Refrigerant inopinda mu crankcase inobva yapiswa nemhepo yodzoserwa mumutsara wekusveta.
Munguva dzisiri dzenguva yekufamba kwemhepo, kutamira kwe refrigerant kuenda ku compressor crankcase idambudziko guru. Izvi zvinogona kukonzera kukuvara kukuru kwe compressor
Nguva yekutumira: Gunyana-25-2024