METHOD OF PRODUCTION OF THERMO-IMPREGNATED WOOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC B27K5/00 

FIELD: wood-working industry.

SUBSTANCE: for production of thermo-impregnated wood the wood is simultaneously dried, impregnated and thermo-modified by immersion the preform in the impregnating composition and subjecting to physical field action. The ratio of the impregnating composition to the volume of the loaded wood is not less than 2:1. Initially the preforms are placed in 2 or more non-insulated baths of smaller size, located in the basket, and then all together they are immersed in a common insulated bath with the impregnating composition, and the impact on the preform is carried out by creation of elastic disturbance of the pulsed nature with the amplitude of more than 200 dB. The device for production of thermo-impregnated wood comprises an insulated bath 1, an impregnating composition 2, a heater 3, metal non-insulated baths 4 with an open top, a basket for loading preforms 6, a non-tight lid 7 including water-cooled parts 8 mounted obliquely. A horizontal part 9 of the bath 1 is provided with a system for collecting and discharging the vaporised liquid. A pipe 10 is located above the mirror of the impregnating composition 2 and is connected to the pump for smoke and vapour recovery of the impregnating composition 2. On the outer wall of the bath 1 an emitter 11 of the pulse generator of elastic disturbances is mounted. The heater 2 is connected to the supply mains through a thermostat controller 12.

EFFECT: improving the quality and depth of impregnation, increased economic efficiency of the method, increased productivity.

3 cl, 1 dwg, 1 ex