MICROWAVE LIQUID HEATER Russian patent published in 1997 - IPC

FIELD: microwave engineering; pasteurizing and sterilizing liquids (water, milk, juices, beer, pastes); terminal load for systems with microwave oscillator of continuous power up to 75 kW. SUBSTANCE: microwave liquid heater has rectangular waveguide AxB section, where A is wide wall and B is narrow wall, accommodating low-loss dielectric tubes installed therein perpendicular to narrow walls; tube diameter is (0.14-0.03)A; first dielectric tube is equally spaced from wide waveguide walls and fourteen tubes are mounted in pairs so that their axes are symmetrical to rectangular waveguide section axis and spaced 0.26B from waveguide axis; distance from first tube axis along waveguide axis to axes of second and third tubes is 0,23λ_w, where λ_w is wavelength in waveguide; distance from fourth and fifth tubes along waveguide axis to second and third tubes is 0,23λ_w; distance from sixth and seventh tubes along waveguide axis to fourth and fifth tubes is 0,1λ_w, that from eight and ninth tubes along waveguide axis to sixth and seventh tubes is 0,13λ_w, from tenth and eleventh tubes along waveguide axis to eighth and ninth tubes is a multiple of 0,1λ_w, from twelfth and thirteenth tubes along waveguide axis to tenth and eleventh tubes, 0,13λ_w, and from fourteenth and fifteenth tubes along waveguide axis to twelfth and thirteenth tubes, 0,1λ_w. EFFECT: enlarged functional capabilities. 1 dwg