GRAIN DRYER WITH MIXED FLOW WITH VACUUM COOL HEAT RECOVERY SYSTEM Russian patent published in 2020 - IPC F26B17/12 F26B3/04 F26B21/04 

FIELD: agriculture.

SUBSTANCE: invention is aimed at improvement of a grain dryer with a mixed flow, having a vacuum cool heat recovery system. Grain dryer comprises section for receiving raw grain in communication with heating section with mixed flow, tempering transition section in communication with heating section with mixed flow, section of vacuum cooling with crossing flow in communication with tempering transition section, negative pressure chamber inside cooling section, between tempering transition section and unloading section. Fan arranged at dryer end creates negative pressure in cooling chamber, draws air through grain, heats air and cools grain. Heated air is drawn by the fan, passes through the heating device and is heated to the corresponding drying temperature. Then air is supplied into heating chamber, passes through grain column with mixed flow, drying grain, and is pushed out to ambient air.

EFFECT: higher efficiency of fuel use with preservation of grain quality.

6 cl, 3 dwg