FIELD: technological processes.
SUBSTANCE: invention relates to drying of materials and is intended for use in drying hard materials of woodworking, agricultural and other industries. Drying device comprises a drying chamber [1] and two air treatment units [2], combined into a closed system for air circulation by means of a heat-insulated jacket [3] and separated from each other by means of louvres [4] for cutting off air treatment units [2] during defrosting, redrying chamber [5] with air-permeable partitions [6] and heat pump condenser [7] located in it. In each air treatment unit [2] there are air heaters [8] and [9], low-temperature evaporators [10] and [11], fans [12]. Block [13] with frozen product is located in drying chamber [1] between louvers [4].
EFFECT: technical result consists in continuous sublimation of moisture from frozen products and adjustment of sublimation product moisture.
1 cl, 1 dwg
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