FREEZE DRYING PLANT Russian patent published in 1995 - IPC

FIELD: freeze drying. SUBSTANCE: freeze drying plant has chamber inside which stacks of finned pans are arranged. Chamber is connected to vacuum system and is provided with heater and condenser for freezing out ice. Lateral ends of chamber are double-walled forming space in between them. Inner walls made of flexible vacuum-tight material are mounted for engagement with lateral ends of finned pans. Arranged in this space are devices for feeding the heat-transfer agent to inner walls which are made in form of frames fitted with injectors. EFFECT: enhanced reliability. 2 cl, 1 dwg