Vacuum freeze-drying adopts sublimation drying nyob rau hauv qis-temperature thiab high-vacuum ib puag ncig. Piv nrog rau cov huab cua kub ib txwm ua kom qhuav, tshuaj tsuag kom qhuav thiab lwm yam thev naus laus zis thev naus laus zis, nws qib kev siv hluav taws xob ntau dua. Ntau lub tuam txhab ua lag luam tsim ib lub tswv yim ruaj khov tias kev siv hluav taws xob tau txiav txim siab tag nrho los ntawm cov khoom lag luam thiab cov qauv, thiab tsis muaj chaw me me rau kev ua kom zoo dua hauv kev tsim khoom tom qab. Hauv kev xyaum ua ntau lawm, kev ua haujlwm ntawm cov neeg ua haujlwm ntawm qhov chaw, cov khoom siv pretreatment, hom kev thauj khoom, qhov chaw khov-drying nkhaus thiab kev saib xyuas txhua hnub yuav ua rau muaj txiaj ntsig zoo rau kev siv hluav taws xob ib kilogram ntawm cov khoom tiav.
Cov khoom siv thauj khoom ntom ntom thiab tso hom yog qhov cuam tshuam ncaj qha tshaj plaws. Kev thauj khoom ntau dhau los yog ntau tshaj-stacking yuav thaiv qhov kev khiav tawm ntawm cov dej vapor, ncua sij hawm sublimation ziab lub voj voog zoo heev, thiab tsis tu ncua ua rau lub sijhawm ua haujlwm ntawm lub tub yees thiab lub tshuab nqus tsev twj tso kua mis, uas ua rau muaj zog siv zog. Ntawm qhov tsis sib xws, yog tias lub tais cov khoom tsuas yog ib feem, qhov kev siv ntawm lub tshuab ziab khaub ncaws kab noj hniav poob qis heev. Txawm hais tias ib zaug-batch ziab lub sij hawm luv luv, qhov tso zis rau ib chav tsev lub sij hawm yog tsawg, uas tseem thawb lub zog noj ntawm txhua kilogram ntawm cov khoom. Cov neeg ua haujlwm yuav tsum tswj cov khoom tuab tuab, ua kom muaj qhov sib txawv ntawm cov ntaub ntawv, ua kom cov cua sov hloov mus thiab cov dej vapor diffusion, thiab ua kom cov khoom muaj peev xwm ua tau zoo tshaj plaws nyob rau hauv qhov chaw ntawm lav kom ziab kom zoo.
Cov txheej txheem ua ntej-freezing yog lub hauv paus ntawm tag nrho cov khoom siv khov-drying, uas tsis muaj kev cuam tshuam rau tag nrho lub zog siv. Yog tias qhov kub thiab txias ua ntej tsis qis txaus lossis lub sijhawm tuav tsis txaus, cov khoom siv hauv cov dej tsis tuaj yeem hloov mus rau hauv cov dej khov. Ib nrab melting phenomenon yuav tshwm sim nyob rau hauv lub sublimation theem. Melted ya raws yuav rhuav tshem cov ntaub so ntswg qub ntawm cov khoom khov-qhuav, thiab rov ua dej khov ntawm cov dej yuav ua rau lub zog poob ntxiv. Txawm li cas los xij, blindly nrhiav ultra-low pre-freezing kub kuj tsis xav tau. Tsis tshua muaj kub yuav siv ntau lub tub yees lub zog tsis muaj txiaj ntsig ntxiv rau cov khoom zoo. Cov khoom sib txawv xws li txiv hmab txiv ntoo, zaub, nqaij thiab khoom noj siv mis muaj cov ntsiab lus sib txawv. Cov neeg khiav dej num yuav tsum tau teem lub hom phiaj ua ntej-freezing kub thiab tuav lub sij hawm raws li cov khoom eutectic point yam ntxwv, kom ua tiav cov nyhuv khov nrog yam tsawg kawg nkaus lub zog tawm tswv yim.
Dhau li ntawm kev thauj khoom thiab ua ntej khov, kev saib xyuas txhua hnub ntawm cov khoom tseem ceeb tsis tuaj yeem tsis quav ntsej. Condenser yog lub luag haujlwm rau kev ntes dej vapor sublimated los ntawm cov khoom. Thaum nto accumulates tuab Frost txheej, tshav kub pauv efficiency yuav poob obviously. Lub tshuab nqus tsev twj, sealing rings thiab lub qhov rooj gasket ncaj qha txiav txim siab lub tshuab nqus tsev hauv chamber. Kev laus, hnav thiab av sib sau ua ke ntawm cov khoom sib khi yuav ua rau lub tshuab nqus tsev. Yuav kom tswj tau lub tshuab nqus tsev theem, lub tshuab nqus tsev twj tso kua mis yuav tsum khiav nrog cov load ntau dua, uas coj cov khoom siv hluav taws xob txuas ntxiv. Kev defrosting tsis tu ncua, ntxuav cov condenser, tshuaj xyuas thiab hloov cov khoom siv sealing kev laus tuaj yeem ua kom cov cuab yeej ua haujlwm hauv lub xeev ua haujlwm siab.
Cov lag luam raug pom zoo los tsim kom tiav cov ntaub ntawv tsim khoom archives. Sau cov kev ntsuas ua ntej khov, kub sublimation, sijhawm ua haujlwm, kev siv hluav taws xob tiag tiag thiab cov khoom lag luam tiav tiav rau txhua pawg ntawm cov khoom sib txawv. Maj mam sau cov txheej txheem paub tab thiab ruaj khov rau txhua yam khoom siv. Tsis txhob rov tshawb nrhiav debugging nyob rau hauv txhua pawg ntau lawm. Cov txheej txheem kev ua haujlwm tau zoo thiab ruaj khov tuaj yeem txo qis kev siv zog ntawm cov khoom khov-qhuav. Rau kev ua haujlwm hauv lub Hoobkas mus ntev, kev tswj hwm kev siv hluav taws xob zoo yuav ua rau muaj txiaj ntsig txo nqi thiab ntxiv dag zog rau kev lag luam kev sib tw ntawm cov khoom noj khov khov kawg.
