Sisitimu yekutonhodza ishoko rekushandisa midziyo nemapaipi ayo refrigerant inoyerera, kusanganisira macompressor, macondenser, zvishandiso zvekudzora mhepo, maevaporator, mapaipi nezvimwe zvinoshandiswa. Ndiyo sisitimu huru yemidziyo yekutonhodza mhepo, yekutonhodza uye yekutonhodza.
Kune mhando dzakasiyana dzezvikanganiso zvekuvharika kwemvura mufiriji, zvakaita sekuvharika kwechando, kuvharika kwetsvina, uye kuvharika kwemafuta. Pavharuvhu yekuchaja yebypass, chiratidzo ndechekuti mhepo iri kudzvanywa negative, ruzha rwechishandiso chekunze chiri kushanda rwakajeka, uye hapana ruzha rwemvura iri kuyerera mu evaporator.
Zvinokonzera uye zviratidzo zvekuvhara kwechando
Kukanganisika kwechando kunonyanya kukonzerwa nekunyorova kwakanyanya mufiriji. Nekufamba kwenguva refu kwefiriji, hunyoro huri mufiriji hunotanga kuzara paburiro remutsinga. Nekuti tembiricha iri paburiro remutsinga ndiyo yakaderera, mvura inooma uye zvishoma nezvishoma inowedzera, kusvika pamwero wakati, mutsinga unovharika zvachose, mutsinga haugone kutenderera, uye firiji haizotonhori.
Chinonyanya kukonzera hunyoro mufiriji system ndechekuti: bepa rekudzivirira injini riri mucompressor rine hunyoro, hunova ndiwo hunyoro hukuru mufiriji system. Pamusoro pezvo, zvikamu nemapaipi ekubatanidza efiriji system ane hunyoro hwasara nekuda kwekuoma kusina kukwana; mafuta efiriji nefiriji zvine hunyoro hunopfuura huwandu hunobvumirwa; Zvinotorwa nepepa rekudzivirira injini nemafuta efiriji. Nekuda kwezvikonzero zvataurwa pamusoro apa, huwandu hwemvura mufiriji system hunopfuura huwandu hunobvumirwa hwefiriji system, uye kuvharika kwechando kunoitika. Kune rumwe rutivi, kuvharika kwechando kuchaita kuti firiji itadze kutenderera, uye firiji haizokwanisi kutonhora zvakanaka; kune rumwe rutivi, mvura ichaita makemikari nefiriji kugadzira hydrochloric acid nehydrogen fluoride, izvo zvinozokonzera ngura yemapombi esimbi nezvikamu, uye zvinotokonzera kukuvara kwemawindings emota. Kudzivirira kwacho kunokuvadzwa, uye panguva imwe chete, kuchaita kuti mafuta efiriji aderere uye kukanganisa lubrication yecompressor. Saka hunyoro mufiriji hunofanira kuchengetwa hushoma.
Zviratidzo zvekuvharika kwechando mufiriji ndezvekuti chinoshanda zvakanaka pakutanga, chando chinoumbwa mu evaporator, condenser inobvisa kupisa, unit inofamba zvakanaka, uye ruzha rwekuita kwe refrigerant mu evaporator rwakajeka uye rwakagadzikana. Nekuumbwa kwe ice blockage, kufamba kwemhepo kunogona kunzwika zvishoma nezvishoma kuderera uye nguva nenguva. Kana kuvharika kwacho kwakanyanya, ruzha rwemhepo runonyangarika, refrigerant cycle inomiswa, uye condenser inotonhorera zvishoma nezvishoma. Nekuda kwekuvhara, kumanikidzwa kwe exhaust kunokwira, ruzha rwemuchina runowedzera, hapana refrigerant inoyerera mu evaporator, nzvimbo ye frosting inoderera zvishoma nezvishoma, uye tembiricha inokwira zvishoma nezvishoma. Panguva imwe chete, tembiricha ye capillary inokwirawo pamwe chete, saka ice cubes inotanga kunyunguduka. Refrigerant inotanga kutenderera zvakare. Mushure menguva yakati, ice blockage inozodzoka, ichigadzira periodic pass-block phenomenon.
Zvinokonzera uye zviratidzo zvekuvharika kwetsvina
Kusagadzikana kwetsvina kunokonzerwa nekusachena kwakanyanya mufiriji. Zvinhu zvikuru zvinokonzera kusachena mufiriji ndeizvi: guruva nesimbi zvakachekwa panguva yekugadzira mafiriji, oxide layer iri pamadziro emukati memapaipi panguva yekusveta, nzvimbo dzemukati nedzekunze dzezvikamu hadzina kucheneswa panguva yekugadzirisa, uye mapaipi haana kuvharwa zvakasimba. Mupombi, mune kusachena mumafuta emuchina wekufiriji nefiriji, uye desiccant powder isina kunaka mufiriji yekuomesa. Tsvina zhinji idzi nehupfu hunobviswa nefiriji yekuomesa pazvinoyerera nefiriji yekuomesa, uye kana firiji yekuomesa iine tsvina yakawanda, tsvina shoma netsvina zvinounzwa muchubhu yecapillary nefiriji ine mwero wekuyerera wakakwira. Zvikamu zvine resistance yakakura zvinoungana uye zvinoungana, uye resistance inowedzera, zvichiita kuti zvive nyore kuti tsvina igare kusvika capillary yavharwa uye firiji system isingakwanise kutenderera. Pamusoro pezvo, kana daro riri pakati pecapillary nefiriji screen mufiriji yekuomesa rava pedyo zvakanyanya, zviri nyore kukonzera kuvharika kwakasviba; Pamusoro pezvo, pakusanganisa capillary ne dry filter, zviri nyorewo kusanganisa capillary nozzle.
Mushure mekunge sisitimu yekutonhodza yasviba uye yavharika, nekuti refrigerant haigone kutenderera, compressor inoramba ichifamba, evaporator haitonhori, condenser haipisi, goko recompressor haripisi, uye hapana ruzha rwemhepo inoyerera mu evaporator. Kana yavharika zvishoma, evaporator ichave nekunzwa kutonhora kana chando, asi hapana chando. Paunobata pamusoro pekunze kwefirita yakaoma ne capillary, inonzwa kutonhora zvikuru, kune chando, uye kunyange chando chichena chinoumbwa. Izvi zvinodaro nekuti kana refrigerant ichipfuura nepakati pe micro-blocked dry filter kana capillary tube, inokonzera throttling uye kuderedzwa kwekumanikidzwa, zvekuti refrigerant inoyerera nepakati pekuvhara ichakura, kupwa, uye kutora kupisa, zvichikonzera condensation kana condensation pamusoro pekunze kwekuvhara. Frost.
Musiyano uripo pakati pekuvharika kwechando nekuvharika kwetsvina: mushure menguva yakati, kuvharika kwechando kunogona kutangazve kutonhora, zvichiita kuti kuvhurika kudzokororwe kwenguva yakati, kuvharika kwenguva yakati, kuvhurika zvakare mushure mekuvharika, uye kuvharika zvakare mushure mekuvhurwa. Mushure mekunge vharika rakasviba raitika, harigone kuiswa mufiriji.
Pamusoro pema capillaries akasviba, kana paine tsvina yakawanda musystem, firita yakaoma inovharika zvishoma nezvishoma. Nekuti kugona kwefirita pachayo kubvisa tsvina netsvina kwakaganhurirwa, ichavharika nekuda kwekuungana kwetsvina nguva dzose.
Kukundikana kwekuvhara oiri uye kumwe kutadza kuvharika kwepombi
Chikonzero chikuru chekuvharirwa kwemafuta mufiriji ndechekuti silinda yecompressor yakasakara zvakanyanya kana kuti mukaha uri pakati pepiston nesirinda wakakura zvakanyanya.
Peturu inoburitswa kubva mucompressor inoburitswa mucondenser, yobva yapinda mufiriji yakaoma pamwe chete nerefrigerant. Nekuda kwekusimba kwakanyanya kwemafuta, inovharwa nedesiccant iri mufiriji. Kana mafuta akawandisa, inovhara nzvimbo inopinzwa nefiriji, zvichiita kuti refrigerant isakwanise kutenderera zvakanaka, uye firiji haitonhori.
Chikonzero chekuvharika kwemamwe mapaipi ndeichi: kana pombi yakasungirirwa, inovharika ne solder; kana pombi ikatsiviwa, pombi yakatsiviwa pachayo inovharika uye haisati yawanikwa. Kuvharika kwataurwa pamusoro apa kunokonzerwa nezvinhu zvevanhu, saka inofanirwa kusungirirwa nekutsiva pombi, inofanira kushandiswa uye kuongororwa zvinoenderana nezvinodiwa, haizokonzere kutadza kuvharika kwekugadzira.
Nzira yekubvisa kuvharika kwesystem yekutonhodza
1 Kugadzirisa matambudziko ekuvhara kwechando
Kuvharika kwechando mufiriji kunokonzerwa nehunyoro hwakawanda mufiriji, saka firiji yese inofanira kuomeswa. Pane nzira mbiri dzekugadzirisa nadzo:
1. Shandisa ovheni yekuomesa kuti upise uye uomese chikamu chimwe nechimwe. Bvisa compressor, condenser, evaporator, capillary, uye air return pipe mu refrigerant system kubva mufiriji, wozviisa mu ovheni yekuomesa kuti zvipise uye zviome. Tembiricha iri mubhokisi iri pa120°C, nguva yekuomesa ndeyemaawa mana. Mushure mekutonhorera kwechisikigo, pukuta uye omesa ne nitrogen imwe neimwe. Tsiva nefirita itsva yakaoma, wobva waenderera mberi nekuunganidza nekuwelding, kuona kudonha kwemhepo, kupukuta, kuzadza refrigerant, kuedza kushanda uye kuvhara. Iyi nzira ndiyo nzira yakanakisa yekugadzirisa kuvharika kwechando, asi inoshanda chete kudhipatimendi rewarandi remugadziri wefiriji. Madhipatimendi ekugadzirisa ese anogona kushandisa nzira dzakadai sekudziyisa uye kubvisa zvikanganiso zvekuvhara kwechando.
2. Shandisai kupisa nekubvisa tsvina uye kushandisa vacuum cleaner kubvisa hunyoro kubva muzvikamu zvefiriji.
2 Kubvisa zvikanganiso zvekuvhara tsvina
Pane nzira mbiri dzekugadzirisa kuvharika kwetsvina ye capillary: imwe ndeyekushandisa nitrogen ine simba rakawanda pamwe chete nedzimwe nzira dzekuburitsa capillary yakavharika. Bvisa. Kana capillary yakavharika zvakanyanya uye nzira iri pamusoro isingakwanise kubvisa kukanganisa, tsiva capillary kuti ubvise kukanganisa, seizvi:
1. Shandisa nitrogen ine simba guru kuti ubvise tsvina iri mu capillary: cheka pombi ye process kuti ubvise mvura, weld capillary kubva mu dry filter, batanidza three-way repair valve kune process pipe ye compressor, woizadza ne high pressure ye 0.6-0.8MPa Nitrogen, wobva waruramisa capillary, woipisa ne gas welding carbonization flame, carbonize tsvina iri mu tube, wobva wabvisa tsvina iri mu capillary uchishandisa high-pressure nitrogen. Kana capillary yapera, wedzera 100 ml ye carbon tetrachloride yekuchenesa gasi. Condenser inogona kucheneswa ne carbon tetrachloride pachishandiso chekuchenesa pombi. Wobva watsiva dryer filter, wozozadza ne nitrogen kuti uone kubuda kwemvura, vacuumize, uye wozozadza ne refrigerant.
2. Tsiva capillary: Kana tsvina iri mu capillary isingakwanise kubviswa nenzira yataurwa pamusoro apa, unogona kutsiva capillary pamwe chete ne low-pressure tube. Kutanga bvisa chubhu ine low-pressure ne capillary kubva pa copper-aluminum joint ye evaporator ne gas welding. Panguva yekuparadzanisa nekusanganisa, copper-aluminum joint inofanira kuputirwa ne wear yakanyorova yekotoni kudzivirira kuti aluminium tube isatsve pakupisa kwakanyanya.
Pakutsiva chubhu ye capillary, mwero wekuyerera kwemvura unofanira kuyerwa. Nzvimbo yekubuda kwechubhu ye capillary haifanirwe kusungirirwa kune inopinzwa ye evaporator. Isa vharuvhu yekuchekerera uye gauge yekumanikidza panzvimbo inopinzwa neinopinzwa ye compressor. Kana kumanikidzwa kwekunze kwemhepo kwakaenzana, kumanikidzwa kwechiratidzo che gauge yekumanikidza kwepamusoro kunofanira kunge kwakasimba pa 1 ~ 1.2MPa. Kana kumanikidzwa kukapfuura, zvinoreva kuti mwero wekuyerera kwemvura wakakura, uye chikamu che capillary chinogona kuchekwa kusvika kumanikidzwa kwakakodzera. Kana kumanikidzwa kwakaderera, zvinoreva kuti mwero wekuyerera kwemvura wakakura zvakanyanya. Unogona kumonera capillary kakawanda kuti uwedzere kuramba kwe capillary, kana kutsiva capillary. Mushure mekunge kumanikidzwa kwakakodzera, batanidza capillary kune pombi inopinzwa ye evaporator.
Pakusonera capillary itsva, kureba kwayo kunoiswa mu copper-aluminum joint kunofanira kunge kuri pakati pe 4 kusvika 5 cm kudzivirira kuvharika kwe welding. Kana capillary yakasonera ku dry filter, kureba kwayo kunofanira kunge kuri 2.5cm. Kana capillary ikaiswa zvakanyanya mu dry filter uye iri pedyo zvakanyanya ne filter screen, tuma molecular sieve utwu tunopinda mu capillary twoivhara. Kana capillary ikaiswa zvishoma, tsvina uye molecular sieve utwu panguva ye welding zvichapinda mu capillary zvovhara zvakananga capillary channel. Nokudaro capillaries hadzipiswi mu filter zvakanyanya kana zvishoma. Zvakawandisa kana zvishoma zvinokonzera njodzi yekuvharika. Mufananidzo 6-11 unoratidza nzvimbo yekubatanidza capillary ne filter dryer.
3 Kugadzirisa matambudziko ekuvhara mafuta
Kukundikana kwekuvhara oiri kunoratidza kuti mafuta emuchina wekufiriji akawandisa asara mufiriji, izvo zvinokanganisa kutonhora kana kutotadza kufiriji. Saka, mafuta emuchina wekufiriji ari mufiriji anofanira kucheneswa.
Kana oiri yekusefa yavharwa, firita itsva inofanira kutsiviwa, uye panguva imwe chete, shandisa nitrogen ine simba guru kubvisa chikamu chemafuta emuchina wekufiriji akaunganidzwa mu condenser, uye shandisa hairdryer kupisa condenser kana nitrogen yaiswa.
Nguva yekutumira: Kurume-06-2023
