Dambudziko rekudzoserwa kwemafuta emacompressor efiriji ragara riri nyaya inonyanya kutaurwa mumafiriji. Nhasi, ndichataura nezvedambudziko rekudzoserwa kwemafuta emacompressor escrew. Kazhinji, chikonzero chekudzoserwa kwemafuta escrew compressor zvakanyanya kunokonzerwa nekusanganiswa kwegasi kwemafuta ekuzora nerefrigerant panguva yekushanda. Munguva yekushanda kwefiriji, refrigerant nemafuta ekuzora efiriji zvinonyungudika, zvichiita kuti mafuta ekuzora abudiswe mucondenser muchimiro cheaerosol nedroplet gas nekushanda kwemuchina nerefrigerant. Kana oil separator isingashande zvakanaka kana dhizaini yesystem isiri yakanaka, inokonzera kuparadzaniswa kwakashata uye kudzoserwa kwakashata kwemafuta esystem.
1. Matambudziko api achaitika nekuda kwekusadzoka zvakanaka kwemafuta:
Kusadzoka zvakanaka kwemafuta e screw compressor kuchaita kuti mafuta akawanda ekuzora agare mu evaporator pipeline. Kana firimu remafuta rikawedzera kusvika pamwero wakati, zvinokanganisa kutonhora kwesystem; Izvi zvinotungamira mukuunganidzwa kwemafuta akawanda ekuzora musystem, zvichikonzera denderedzwa rakaipa, zvichiwedzera mari yekushandisa uye zvichideredza kuvimbika kwekushanda. Kazhinji, pasi pe1% yemhepo inoyerera mu refrigerant inobvumirwa kutenderera musystem nemusanganiswa wemafuta nemhepo.
2. Mhinduro dzekugadzirisa kudzoka kwemafuta asina kunaka:
Kune nzira mbiri dzekudzosera mafuta kucompressor, imwe ndeyekudzosera mafuta kumuchina wekuparadzanisa mafuta, uye imwe ndeyekudzosera mafuta kupombi yemhepo inodzosera mafuta.
Chinoparadzanisa mafuta chakaiswa papombi yekubuda kwemafuta yecompressor, iyo inogona kuparadzanisa 50-95% yemafuta ari kushanda. Mhedzisiro yekudzoserwa kwemafuta yakanaka uye kumhanya kwayo kunokurumidza, izvo zvinoderedza zvakanyanya huwandu hwemafuta anopinda mupombi yesystem, nokudaro zvichiita kuti kushanda kuwedzere nguva pasina kudzoserwa kwemafuta.
Kune masisitimu ekuchengetera mafiriji anotonhorera ane mapaipi marefu, masisitimu ekugadzira aizi akazara nemvura, uye michina yekuomesa nechando ine tembiricha yakaderera, hazvishamisi kuona mafuta asina kudzoka kana mafuta mashoma kudzoka kwemaminitsi gumi kana makumi mushure mekutanga muchina. Sisitimu yakaipa ichaita kuti compressor ivhare nekuda kwekumanikidzwa kwakaderera kwemafuta. Kuiswa kwemuchina wekuparadzanisa mafuta unoshanda zvakanyanya mufiriji iyi kunogona kuwedzera nguva yekushanda kwecompressor isina kudzoka kwemafuta, kuitira kuti compressor igone kupfuura zvakachengeteka muchikamu chedambudziko chekusadzoka kwemafuta mushure mekutanga. Mafuta ekuzora asina kuparadzaniswa anopinda musystem uye anoyerera nefiriji iri muchubhu kuti agadzire kutenderera kwemafuta.
Mushure mekunge mafuta ekuzora apinda mu evaporator, kune rumwe rutivi, nekuda kwekupisa kwakaderera uye kunyungudika kwakaderera, chikamu chemafuta ekuzora chinoparadzaniswa ne refrigerant; kune rumwe rutivi, tembiricha yakaderera uye viscosity yakakura, mafuta ekuzora akaparadzaniswa ari nyore kunamira kumadziro emukati mechubhu, uye zvinonetsa kuyerera. Kana tembiricha yekuzora yakaderera, zvinoomera kudzorera mafuta. Izvi zvinoda kuti dhizaini nekuvakwa kwepombi yekuzora uye pombi yekudzosa mafuta zvive zvakanaka kuti mafuta adzoke. Tsika yakajairika ndeyekushandisa dhizaini yepombi yekudzika uye kuve nechokwadi chekumhanya kukuru kwemhepo. Kune masisitimu ekuzora ane tembiricha yakaderera, kuwedzera pakusarudzwa kwezviparadzanisa mafuta zvinoshanda zvakanyanya, zvinonyungudutsa zvakakosha zvinowanzowedzerwa kudzivirira mafuta ekuzora kuti asavhare machubhu e capillary nemavharuvhu ekuwedzera, uye kubatsira mafuta kudzoka.
Mukushandiswa kwazvinoita, matambudziko ekudzoserwa kwemafuta anokonzerwa nekugadzirwa kusina kunaka kwepombi ye evaporator ne gasi rekudzoka haasi akajairika. Kune masisitimu eR22 neR404A, kudzoserwa kwemafuta kwe evaporator yakazara nemvura kwakaoma zvikuru, uye dhizaini yepombi ye oiri rekudzoka kwemafuta ehurongwa inofanira kungwarira zvikuru. Kune sisitimu yakadaro, kushandiswa kwekuparadzanisa mafuta kwakanyanya kunogona kuderedza huwandu hwemafuta anopinda mupombi yehurongwa, zvichiwedzera nguva iyo pombi ye gasi rekudzoka isingadzose mafuta mushure mekutanga muchina.
Kana compressor yakakwira kupfuura evaporator, kukotama kwemafuta papombi yekudzosa yakatwasuka kunodiwa. Musungo wekudzosa mafuta unofanira kunge wakabatana zvakanyanya kuti mafuta achengetwe. Nzvimbo iri pakati pekukotama kwemafuta inofanira kunge yakakodzera. Kana huwandu hwemakukotama emafuta hwakura, mafuta ekuzora anofanira kuwedzerwa. Kuchenjerera kunofanirawo kutorwa mumitsara yekudzosa yemasisitimu anochinja-chinja emutoro. Kana mutoro waderedzwa, kumhanya kwemhepo kunoderera, uye kumhanya kwacho kwakaderera zvakanyanya, izvo zvisingakodzeri kudzoka kwemafuta. Kuti uve nechokwadi chekuti mafuta anodzoka pasi pemutoro wakaderera, pombi yekusveta yakatwasuka inogona kushandisa riser mbiri.
Uyezve, kutanga kwecompressor kakawanda hakubatsiri kudzoka kwemafuta. Nekuti nguva yekushanda ipfupi kwazvo, compressor inomira, uye hapana nguva yekugadzira mhepo yakasimba inoyerera mupombi yekudzosa, saka mafuta ekuzora anogona kungogara mupombi chete. Kana mafuta ekudzosa ari mashoma pane mafuta ekumhanya, compressor ichave isina mafuta. Kana nguva yekushanda ipfupi, pombi yakareba, system yacho yakaoma, dambudziko rekudzoka kwemafuta rinonyanya kuoneka. Saka, mumamiriro ezvinhu akajairwa, usatange compressor kakawanda.
Kushaikwa kwemafuta kunokonzera kushomeka kukuru kwekuzora mafuta. Chikonzero chikuru chekushaikwa kwemafuta hachisi chekuti compressor inomhanyisa sei uye kuti inoshanda nekukurumidza sei, asi kuti system haina kudzoka zvakanaka kwemafuta. Kuisa oil separator kunogona kukurumidza kudzorera oiri uye kuwedzera nguva yekushanda kwecompressor pasina kudzoka kwemafuta. Dhizaini ye evaporator ne return line inofanira kufunga nezve kudzoka kwemafuta. Matanho ekugadzirisa akadai sekudzivirira kutanga kushanda nguva nenguva, kunyungudutsa nguva dzose, kuzadza refrigerant nenguva, uye kutsiva zvikamu zvinopfekwa (senge mabearings) nenguva zvinobatsirawo kudzoka kwemafuta.
Pakugadzira sisitimu yekutonhodza, tsvakiridzo pamusoro pedambudziko rekudzoserwa kwemafuta haifanirwe kuverengerwa. Sisitimu yekutonhodza yakachengeteka uye yakavimbika inogona kuvimbiswa chete nekutarisa zvese zviri mukati.
Nguva yekutumira: Kukadzi-21-2022
