Chii chinonzi Freeze Dryer?

Iyo yekuomesa chando inobvisa mvura kubva kune inoparara kuitira kuti ichengetedze, ichiwedzera hupenyu hwayo pasherufu uye / kana kuita kuti zvive nyore kutakura.Mazaya echando anoshanda nekuomesa zvinhu, wozodzikisa kudzvanywa uye nekuwedzera kupisa kubvumira mvura yakaomeswa nechando muzvinhu kuti ichinje yakananga kumhute (sublimate).

A freeze dryer inoshanda muzvikamu zvitatu:
1. Kuomesa nechando
2. Primary Drying (Sublimation)
3. Sekondari kuomesa (Adsorption)

Kuomesa nechando kwakakodzera kunogona kuderedza nguva dzekuoma ne30%.

Chikamu 1: Chikamu Chekutonhora

Ichi ndicho chikamu chakakosha zvikuru.Mazaya echando anoshandisa nzira dzakasiyana kuomesa chigadzirwa.

· Kuomesa nechando kunogona kuitwa mufiriji, mubhavhu rakatonhorwa (shell freezer), kana pasherufu muomesa chando.

· Iyo yekuomesa yechando inotonhodza zvinhu pazasi penzvimbo yayo katatu kuti ive nechokwadi chekuti sublimation, pane kunyungudika, ichaitika.Izvi zvinochengetedza chimiro chemuviri wechinhu.

· Chigadziro chechando chinoomesa chando chinoomesa makristasi makuru echando, anogona kugadzirwa nekutonhora zvishoma kana kunyungudutswa.Nekudaro, nezvinhu zvebiology, kana makristasi akakura zvakanyanya anogona kutyora madziro esero, uye izvo zvinotungamira kune kushoma-kupfuura-yakanakira kuomesa mhedzisiro.Kudzivirira izvi, kutonhora kunoitwa nokukurumidza.

• Nezvemidziyo inogara ichinaya, annealing inogona kushandiswa.Iyi nzira inosanganisira kukurumidza kutonhora, wozosimudza tembiricha yechigadzirwa kuti ibvumire makristasi kukura.

Chikamu chechipiri: Kuomeswa kwepuraimari (Sublimation)
· Chikamu chechipiri ndechekuomesa (sublimation), umo kudzvinyirirwa kunoderedzwa uye kupisa kunowedzerwa kune zvinyorwa kuitira kuti mvura iwedzere.

· Vacuum yekuomesa yechando inomhanyisa sublimation.Iyo inotonhora yekuomesa yechando condenser inopa pamusoro kuti mhute yemvura inamate uye kusimba.Iyo condenser inodzivirirawo pombi yevacuum kubva pamhute yemvura.

· Inenge 95% yemvura muzvinhu inobviswa muchikamu ichi.

· Kuomesa kwekutanga kunogona kuve kunonoka.Kupisa kwakanyanya kunogona kushandura chimiro chechinhu.

Chikamu chechitatu: Sekondari Kuomesa (Adsorption)
· Ichi chikamu chekupedzisira ndechekuomesa kwechipiri (adsorption), panguva iyo mamorekuru emvura akasungwa anobviswa.
Nekusimudza tembiricha yakakwira kupfuura muchikamu chekutanga chekuomesa, zvisungo zvinotyoka pakati pezvinhu nemamorekuru emvura.

· Kuomesa zvinhu zvakaomeswa chengetedza chimiro che porous.

· Mushure mekunge muomesi wechando wapedza maitiro ayo, vacuum inogona kuputswa negasi inert isati yavharwa.

· Zvizhinji zvekushandisa zvinogona kuomeswa kusvika 1-5% yakasara mwando.

Freeze Dryer Matambudziko Kuti Udzivise:
Kupisa chigadzirwa chakanyanya kupisa kunogona kukonzera kunyungudika kana kudonha kwechigadzirwa

· Condenser overload yakakonzerwa nemhute yakawandisa ichirova condenser.
o Kugadzira mhute yakawandisa

o Nzvimbo yakawandisa

o Kunyanya diki nzvimbo yecondenser

o Firiji isina kukwana

· Vapor choking - iyo mhute inogadzirwa nekukurumidza kupfuura iyo inogona kupinda nepamhepo yemhepo, chiteshi pakati pechigadzirwa chamber uye condenser, ichigadzira kuwedzera kwechamber pressure.

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