VACUUM-SUBLIMATION DRIER Russian patent published in 2010 - IPC F26B9/06 F26B5/06 

FIELD: heating.

SUBSTANCE: during vacuum-sublimation drying process the product is pre-frozen in trays with transverse partitions for increasing the heat exchange surface, at double bottoms of which made from material with high heat conductivity coefficient there installed are thermoelectric modules the operating principle of which is based on Peltier effect. Trays in lower part have finning serving for desublimation of steam of below located cascade. Heat generated with hot ends of thermoelectric modules is used for supply of energy to the product. Drying chamber (sublimator) has cylindrical shape with the flap cover made in the form of semi-cylinder with inspection hole. Along the perimeter of inner surface of sublimator there installed is desublimator for additional condensation (desublimation) of steam.

EFFECT: reduction of specific energy consumption, improvement of product quality, simplifying the drier design, multi-cascade location of trays on the support allows increasing the volume of loaded product.

4 dwg