CONTINUOUS VACUUM FREEZE DRIER WORKING ON INNER CARRIERS Russian patent published in 2001 - IPC

FIELD: vacuum freeze drying of thermosensitive products; pharmaceutical, microbiological and food processing industries; agroindustrial complex. SUBSTANCE: continuous vacuum freeze drier working on inert carriers includes drying chamber connected with desublimator and vacuum pump, freezer for freezing product being dried on inner material particles, drum consisting of solid and perforated sections, mechanism for return of inert carriers to delivery unit and infra-red heating sources. Innovation of invention consists on form of freezer which is made from two engageable drums mounted for rotation in opposite directions; drums are provided with hemispherical recesses provided with metering and ejecting mechanisms; inert carrier delivery unit is provided with cooling elements; inert carrier return mechanism is made in form of conveyer assembled from electromagnets; it is located in end section of drum in way of motion of product and is provided with electromagnet current interrupter. EFFECT: enhanced reliability; increased productivity; reduced power requirements. 2 cl, 5 dwg