Mulingo wamba wa vacuum freeze dryer nthawi zambiri umakhala pakati pa 10 Pa ndi 1000 Pa, ndi mtengo wake womwe umakhudzidwa ndi zinthu zakuthupi ndi ukadaulo wokonza. Mitundu ya vacuum iyi ndiyothandiza kufulumizitsa kuchuluka kwa sublimation ndikuwongolera kuyanika bwino.
Mulingo wa vacuum wa chowumitsira chowumitsa amatanthawuza momwe mpweya wamkati umatsikirapo kuposa mphamvu yakunja ya mumlengalenga. Izi ndizofunika kwambiri pakugwira ntchito bwino kwa zida ndi kuyanika kwake. Komabe, palibe yunifolomu ndi mtengo wokhazikika wa mulingo wamba wowumitsa wowumitsira mufiriji, chifukwa umakhudzidwa ndi zinthu zosiyanasiyana, kuphatikiza mtundu, mawonekedwe, kagwiritsidwe ntchito, ndi momwe zimagwirira ntchito.
