Ol 'vacuum freeze dryers' em ol gutpela masin bilong draim ol samting we i save rausim wara long ol samting long rot bilong 'low-temperature sublimation. Ol i save yusim planti long ol kaikai, marasin, ol samting bilong laip, na ol kemikel indastri. As tingting bilong ol em long daunim tempereja bilong ol samting aninit long 'freezing point' insait long wanpela 'vacuum' envairomen, na dispela i mekim wara i go antap stret long wanpela strongpela samting i go long wanpela 'gaseous' stet, na long dispela rot ol i no inap bagarapim ol samting we i stap insait long ol samting we i gat bikpela hat. Ol dispela i tok klia long rot bilong yusim long tripela samting: redi pastaim long operesen, ol rot bilong operesen, na ol samting bilong lukautim.
Redi pastaim long operesen
Sekim ol ikwipmen: Yu mas sekim olsem 'cold trap', 'vacuum pump', 'heating system', na 'control system' i wok gut. Sekim sapos tempereja bilong kol trap i kamap long mak we ol i makim pinis (planti taim em i mas kol pastaim i go aninit long -40 digri), sapos oil level bilong 'vacuum pump' i stap insait long standet mak, na sapos ol 'sealing ring' i stap gut.
Material Pretreatment: Mekim pre-frizing tritmen bihainim ol mak bilong ol samting. Olsem, ol kaikai i mas stap ais long -30 digri i go inap -40 digri inap 12-24 aua long mekim ol i kamap ais olgeta; ol marasin i mas i gat gutpela mak bilong ais long abrusim bagarap long ol kristal. Sapos ol i no putim inap ais pastaim, dispela inap mekim na prodak i pundaun long taim bilong 'sublimation', na dispela inap long bagarapim gutpela bilong prodak.
Loading na Layout: Spredim ol samting i go stret long ol samting trei, wantaim wanpela 'thickness' we i stret long 5-10mm. Planti 'material trays' i mas gat spes (olsem, 38mm) long abrusim hevi bilong 'vapor diffusion'. Long ol samting we i gat ol samting we i save pairap hariap, yusim ol samting bilong putim long bokis we i gat gutpela win i ken go insait long en.
Ol Rot Bilong Wok
Pre-step bilong ais: Setim pre-tempereja bilong ais (-40 digri i go long -50 digri) na taim (stretim bihainim hamas samting yu putim, planti taim 2-4 aua) long rot bilong 'intelligent control panel'. Long dispela taim, yu mas meksua olsem tempereja bilong kol trap i stap gut long abrusim planti ais kristal i kamap bikos long senis bilong tempereja.
Vacuuming na Sublimation Draying: Bihain long pre-frizing, kirapim 'vacuum pump' long daunim presa bilong sistem i go aninit long 10Pa (kisim wanpela standet 'vacuum' bilong 5Pa aninit long no-lod). Long dispela taim, ais insait long dispela samting i stat long kamap bikpela, na i nidim pawa long wanpela 'conductive heating system' (olsem, 'shelf heating'). Yu mas apim isi isi temperaja bilong hatim (i gutpela long stat long -20 digri, na apim long 5-10 digri long olgeta step) bilong abrusim hat tumas.
Desorption Drying Stage: Taim tempereja bilong samting i go klostu long temperaja bilong ples, desorption drying stej i stat. Long dispela taim, ol i mas daunim moa 'vacuum level' (i go aninit long 2 Pa), na ol i mas apim 'shelf temperature' i go antap long 30-50 digri long rausim ol wara i stap yet. Long dispela step, 'sample temperature display' i nidim wok bilong sekim oltaim long stopim bikpela hat tumas long kamapim senis long ol samting.
Pasim na Sampling: Bihain long draim, pastaim pasim 'heating system', na bihain pasim 'vacuum pump' bihain long temperaja bilong samting i go daun long rum tempereja. Laspela, putim 'drying nitrogen' long brukim 'vacuum' na rausim ol samting. Long ol samting we i gat bikpela pe, em i gutpela long yusim wanpela-baten lektrik difrost fanksen long mekim ol ikwipmen i go bek hariap long nomol stet bilong en.
