DEVICE FOR MICROWAVE-CONVECTION DRYING OF DIELECTRIC MATERIALS Russian patent published in 1999 - IPC

FIELD: microwave equipment. SUBSTANCE: device has heat-insulated rectangular resonance chamber, rectangular waveguide with slotted input, units for blowing material subjected to drying with hot air, input and output rectangular quenching channels, infinite perforated radio transparent conveyor belt, which is mounted above multiple line system of metal tubes which are arranged in checkered order, filled with microwave absorbing liquid and are equipped with longitudinal cuts which planes as well as slotted input of rectangular waveguide are covered with radio transparent plates. Ends of tubes are joined by means of two collectors which are arranged in upward and downward movement of conveyor belt. One collector is connected to device which controls pressure. Circuit of multiple line system of metal tubes has circulatory pump. Resonance chamber is split into separate compartments by means of upper wall, which is transparent to radio waves, and lower wall. Said compartments are equipped with their inputs and outputs. EFFECT: increased consumption of microwave power without external source of hot air. 2 dwg