METHOD AND DEVICE FOR PRODUCING SUBLIMATED FOOD PRODUCTS Russian patent published in 2006 - IPC F26B5/06 F26B9/06 

FIELD: food industry.

SUBSTANCE: method comprises extruding the initial product directly to the sublimation chamber to the zone where pressure is higher than the critical one which is caused by the vapor generated by intensive evaporation in the zone of the product supply with producing highly developed porous structure, evaporating freezing of the product in the zone of subcritical pressure, and sublimating drying in the microwave field with subsequent removing the finished product through the gate. The device comprises sublimation chamber, vertical extruder, Laval nozzle secured to the bottom section of the extruder, coaxial peripheral and central passages, and evaporator of the desublimator connected with the space around the screw pressure chamber of the extruder through the pipeline. The space is connected with the central passage of the extruder through a pipeline.

EFFECT: enhanced efficiency and reduced power consumption.

2 cl, 4 dwg