Vacuum freeze dryers gaw grai kaja ai htum mat ai arung arai ni rai nna, n-gun n law ai-katsi ai sublimation hku nna, arung arai ni kaw na hka hpe shapraw kau ya lu ai. Dai ni hpe malu masha, tsi mawan, shingra tara hte seng ai arung arai ni, tsi mawan ni hta grai lang ma ai. Shanhte a madung tara gaw, n-gun n rawng ai shara hta, n-gun rawng ai shara kaw na, n-gun rawng ai shara kaw nna, n-gun rawng ai shara de, n-gun rawng ai arung arai ni a n-gun rawng ai arung arai ni hpe hkra machyi ai lam hpe koi lu na matu, n-gun rawng ai shara (moisture) hpe, n-gun rawng ai shara (freezing point) npu de jahkrat kau ya ai. Lahta na lam ni gaw, jai lang ai ladat hpe lam masum kaw nna hkrak tsun dan da ai: pre-operation galaw na matu hkyen lajang ai lam, operation galaw ai ladat ni, sadi maja ai lam ni.
-magam bungli garai n galaw shi yang hkyen lajang ai lam
Arung arai ni hpe jep yu ai: Cold trap, vacuum pump, katsi ai jak, hkang ai jak ni gaw kaja ai hku bungli galaw nga ai hpe jep yu u. Cold trap a nbung katsi ai lam gaw, tau hkrau masat da ai manu de du sai kun (galaw madang hku nna -40℃npu de pre-katsi shangun ra ai kun), vacuum pump sau madang gaw, masat da ai shadawn shadang kata kaw rai kun, shing nrai, sealing rings ni n hkrat sum ai kun, jep yu u.
Material Pretreatment: Material a arawn alai hte maren, shawng e-hkum hkrang hpe n-gun jaw ai lam galaw na. Ga shadawn, malu masha ni hpe -30℃kaw nna -40℃du hkra hkying hkum 12-24 tup katsi mat hkra galaw ra ai; tsi mawan ni hta crystal hkra machyi ai lam n byin hkra, hkang lu ai freezing rate ni ra ai. N hkum tsup ai pre-freezing gaw sublimation stage hta hkrat sum mat nna, galaw ngut sai arai a quality hpe hkra machyi shangun ai.
Loading hte Layout: Arung arai ni hpe arung arai bang ai shara ni hta maren mara garan nna, 5-10mm daram galu hkra galaw na matu hpaji jaw da ai. Material tray law law hpe nbung garan ai lam hpe pat shingdang ai lam n byin hkra, tsan gang ai lam (ga shadawn, 38mm) hpe tawn da ra ai. Nbung n-gun rawng ai arung arai ni a matu, nbung n-gun kaja ai packaging arung arai ni hpe lang u.
Bungli galaw ai ladat ni
Pre-hka lim ai aten: Hpaji rawng ai hkang ai panel hku nna, hka lim ai shawng na nbung katsi ai aten (-40℃kaw nna -50℃) hte aten hpe (hpyen n-gun law ai hte maren gram lajang ai, law malawng hkying hkum 2-4 daram) hpe hpaji rawng ai hkang ai panel hku nna masat da u. Ndai ladaw hta, nbung laru galai shai ai majaw hka lim ai lam grai law hkra n byin hkra, katsi ai hka lim ai shara hpe ngang grin hkra galaw ra ai.
Vacuum hte Sublimation Drying: Pre-katsi ngut ai hpang, system a n-gun hpe 10Pa a lawu de shayawm na matu vacuum pump hpe hpaw dat u (no-load npu hta 5Pa ngu ai madang n-gun hpe lu la na matu). Ndai aten hta, dai arai kata na hka gaw sublimate byin hpang wa nna, conductive heating system kaw na n-gun ra ai (ga shadawn, shelf heating). Hka lum ai nbung hpe loi loi hte jat ra ai (-20℃kaw nna hpang na matu hpaji jaw ai, lahkam shagu hta 5-10℃jat ra ai) dai hku galaw yang, shara langai ngai hta grai katsi ai hpe koi lu na re.
Desorption Drying Stage: Dai arai a katsi ai lam gaw grup yin katsi ai lam de du wa ai shaloi, desorption katsi ai lam hpe galaw hpang wa ai. Ndai aten hta, vacuum level hpe grau shayawm ra ai (2 Pa a lawu de), shing nrai, ngam nga ai hka hpe shapraw kau na matu, shelf temperature hpe 30-50℃de jat ra ai. Ndai ladaw hta, sample temperature display hpe matut manoi yu reng ra ai, n-gun grai ja ai majaw, arung arai ni hpe n-gun n rawng hkra galaw na matu.
Shutdown and Sampling: Hka lim ngut ai hpang, shawng nnan hka lum ai jak hpe pat kau nna, dai hpang, hka lum ai jak hpe nta kata na lum ai de hkrat mat ai hpang, vacuum pump hpe pat kau ra ai. Hpang jahtum, vacuum hpe daw kau nna, dai arai hpe shaw kau na matu, drying nitrogen hpe bang dat u. -manu dan ai arung arai ni a matu, langai-button electric defrost function hpe lang nna, arung arai ni hpe lawan ladan n-gun n rawng ai masa de bai gram lajang na matu hpaji jaw da ai.
