Origin
Kuita vacuum kutonhora muindasitiri yekubheka kwabuda mukupindura kudiwa kwevanobika kudzikisa nguva kubva kune zvinongedzo kuyera nhanho kuburikidza nekurongedza chigadzirwa.
Chii chinonzi Vacuum Cooling?
Vacuum kutonhora inzira inokurumidza uye inoshanda zvakanyanya kune yechinyakare mumhepo kana ambient kutonhora.Iyo tekinoroji nyowani yakavakirwa pakudzikisa mutsauko pakati peambient atmospheric pressure uye mvura mhute pressure muchigadzirwa.
Nekushandisa pombi, vacuum cooling system inobvisa mweya wakaoma uye wakanyorova kubva munzvimbo inotonhora kugadzira vacuum.
Izvi zvinomhanyisa vaporization yemahara mwando kubva pachigadzirwa.
Mabheki anomhanyisa anobatsirwa kubva kune iyi tekinoroji kuburikidza nekudzikisa kutenderera nguva uye kushandiswa kwakanaka kwekugadzira chirimwa chepasi nzvimbo.
Zvinoshanda sei
Mukuita uku, zvingwa zvinobuda muchoto patembiricha iri pedyo ne205°F (96°C) zvinoiswa kana kutakurwa zvakananga mukamuri yekutsvaira.Yakakura zvichienderana nezvinodiwa zvekugadzirisa, zvidimbu paminiti inogadzirwa, uye kushandiswa kwepasi.Kana chigadzirwa chacho chatakurwa, imba yevacuum inobva yavharwa kudzivirira kuchinja kwegesi.
Pombi yevacuum inotanga kushanda nekubvisa mweya kubva mukamuri yekutonhodza, nekudaro ichidzikisa mhepo (atmospheric) mukamuri.Iyo vacuum yakagadzirwa mukati memidziyo (chidimbu kana yakazara) inodzikisa nzvimbo yekuvira yemvura muchigadzirwa.Zvadaro, hunyoro huri muchigadzirwa hunotanga kubuda nekukurumidza uye zvishoma nezvishoma.Kufashaira kunoda kudziya kwakadzikama kwe evaporation, iyo inobviswa kuburikidza nechigadzirwa crumb.Izvi zvinoguma nekudonha kwetembiricha uye zvinoita kuti chingwa chitonhore.
Sezvo kutonhora kuchienderera mberi, pombi yevacuum inodhonza mhute yemvura kuburikidza necondenser inounganidza hunyoro uye inoiendesa kune imwe nzvimbo yakaparadzana.
Zvakanakira vacuum kutonhora
Nguva pfupi yekutonhora (kutonhora kubva 212 ° F / 100 ° C kusvika 86 ° F / 30 ° C inogona kuwanikwa mu 3 kusvika 6 min chete).
Ngozi yakaderera yekusvibiswa kwepashure-kubika mold.
Chigadzirwa chinogona kutonhodzwa mumidziyo ye20 m2 pachinzvimbo che250 m2 yekutonhodza shongwe.
Superior crust kutaridzika uye zvirinani symmetry sezvo shrinkage yechigadzirwa inoderedzwa zvakanyanya.
Chigadzirwa chinoramba chakasimba kuti chideredze mukana wekudonha panguva yekucheka.
Vacuum kutonhora kwave kuripo kwemakumi emakore, asi ndinhasi chete apo tekinoroji yasvika pamwero wekukura wakakwira zvakakwana kuti uwane kugamuchirwa kwakapararira kunyanya kubheki kunyorera.
Nguva yekutumira: Jun-21-2021