SHF-DRYING CHAMBER WITH CIRCULAR WAVEGUIDES Russian patent published in 2016 - IPC F26B3/347 

FIELD: wood-working industry.

SUBSTANCE: invention relates to equipment for drying large-sized timber and can be used in forest and wood-working industries for drying of rounded and construction of logs, sawn bars, in making log houses. Drying chamber consists of fixed horizontally on the frame of the cylindrical casing with ring-shaped waveguides for microwave fields from two-step magnetrons and tubes with condensate drain for moisture removal from the body, cover with the end face of housing for loading into timber. Waveguides have approximately the magnetron swinging screens for providing of pulsation of the microwave field, are arranged along the length of the housing and turned relative to each other at a certain angle, ensuring absence of concentration of the microwave field in timber and charring. Positive effect is achieved by pulsation (change in value) of the microwave field and variable relative to timber its direction, secured by turning the waveguides relative to each other along the circumference of the body.

EFFECT: invention shall ensure higher efficiency, reliability, quality of drying timber and reducing of drying time.

1 cl, 3 dwg