FIELD: drying for sublimation of biomaterials is space frozen state. SUBSTANCE: freeze drier includes housing with bioproduct flash holders, two hermetic covers and heater. Housing is mounted in air lock chamber of space vehicle and may be extended into extravehicular space. It is provided with radial passage for bringing its cavity in communication with surrounding medium and shutoff electropneumatic valve. Blank-divider is mounted on the passage outside. Each cover is provided with spring-loaded diaphragm secured on bellows forming hermetic cavities and locking members engageable with diaphragm. Valve shutting off the passage is provided in each cover for communicating the respective cavity with medium surrounding the space vehicle. Heater is located between holders. Each flash is provided with check valve engageable with respective diaphragm. EFFECT: enhanced reliability. 3 dwg
