MULTI-SECTIONAL VACUUM-AND-SUBLIMATION DRYER WITH FLOW-CYCLIC ACTION Russian patent published in 2013 - IPC F26B9/06 F26B5/06 

FIELD: food industry.

SUBSTANCE: multi-sectional vacuum-and-sublimation drier with flow-cyclic action contains a vacuum pump, a desublimator, a vacuum chamber consisting of tightly connected sections representing a shell having a crosswise baffle made of a heat-conductive material and dividing the section into two cavities; the section cavities are connected to each other via a nipple with a locking valve; each section is additionally equipped with a nipple with a locking valve installed with the possibility to connect to the desublimator and the vacuum pump; the novelty consists in the fact that the crosswise baffle made of a heat-conductive material may be designed as positioned at an angle in relation to the shell axis, the angle determined from formulae $$\sin \alpha =\frac{\pi \cdot D^2}{4\cdot S},\left(1\right)$$ (1), where D -shell diameter, m, S - sublimation area, m² $$\sin \alpha =\frac{H}{h_3+h_4+h_5+2\cdot h_6},\left(2\right)$$ (2), where H - distance between the surfaces of sublimation and desublimation, m, h₃ - desublimate height, m, h₄, h₅ - structural dimensions for the nipples connection, m, h₆ - structural dimension for connection of the sections to each other.

EFFECT: water steam desublimation process intensification and the product layer destruction prevention.

3 cl