FREEZE VACUUM DRIER Russian patent published in 1996 - IPC

FIELD: food-stuffing industry. SUBSTANCE: provided on edges of bevel scrapers engageable with surface of plate-type heating elements are grooves which form clearance "h" together with surface of heating elements whose amount is equal to preset thickness of products; length of edges of bevel scrapers mounted on cantilevers are so differentiated that concentric circle drawn from center of plates through ends of scraper edges and points separating their grooves from parts of edges engageable with surface divide surfaces of heating element into circular surfaces equal in area whose number is equal number of scrapers mounted on one cantilever. EFFECT: enhanced reliability. 3 dwg