RU2012134370A

RU2012134370A - METHOD FOR DRYING WOOD

Info

Publication number: RU2012134370A
Application number: RU2012134370/06A
Authority: RU
Inventors: Виталий Матвеевич Попов; Валентина Александровна Афонькина; Елена Ивановна Шукшина
Priority date: 2012-08-10
Filing date: 2012-08-10
Publication date: 2014-02-20
Also published as: RU2514576C2

Abstract

1. Способ сушки древесины в виде досок, заключающийся в том, что доски укладывают в штабель, состоящий из пакетов, не менее двух слоев досок, с разделительными элементами в виде реек; размещают между пакетами пленочные резистивные электронагревательные элементы, перекрывающие всю поперечную площадь штабеля, причем в основании штабеля и на его верхнюю поверхность укладывают ряд нагревательных элементов, снабженных отражателями теплового потока, расположенными снизу и сверху пленочных электронагревателей для направления тепла внутрь штабеля, подают на электронагреватели напряжение питания, сушку ведут путем сухого нагрева при помощи электронагревательных элементов, процесс сушки контролируют датчиками влажности и температуры; для удаления влаги периодически включают вытяжную вентиляцию; об окончании сушки судят по показаниям влажности, отличающийся тем, что процесс сушки ведут циклично в зависимости от температуры нагрева доски по показаниям датчика температуры, установленного внутри доски в штабеле: при достижении температуры нагрева 40-45°С питание электронагревателей отключают, а при снижении до 35-38°С электронагреватели вновь включают, сушку ведут при температуре 35-45°С, процесс сушки заканчивают в соответствии с заданными показателями влажности определенной породы дерева.2. Способ по п.1, отличающийся тем, что вентиляцию включают при влажности, равной 85-90%, и выключают при влажности 60-65%.3. Способ по п.1, отличающийся тем, что для исключения тумана и скопления росы на поверхности электронагревателей последние выполняют с перфорацией.1. The method of drying wood in the form of boards, which consists in the fact that the boards are stacked in a stack consisting of packages, at least two layers of boards, with dividing elements in the form of battens; they place film resistive electric heating elements between the packages that overlap the entire transverse area of the stack, and at the base of the stack and on its upper surface lay a series of heating elements equipped with heat flux reflectors located below and above the film electric heaters to direct heat into the stack, supply voltage to the electric heaters , drying is carried out by dry heating using electric heating elements, the drying process is controlled by humidity sensors and and temperature; to remove moisture periodically include exhaust ventilation; the end of drying is judged by humidity readings, characterized in that the drying process is carried out cyclically depending on the temperature of the board heating according to the temperature sensor installed inside the board in the stack: when the heating temperature reaches 40-45 ° C, the power of the electric heaters is turned off, and when reduced to At 35-38 ° C, the electric heaters are turned on again, drying is carried out at a temperature of 35-45 ° C, the drying process is completed in accordance with the set humidity indicators of a certain wood species. 2. The method according to claim 1, characterized in that the ventilation is turned on at a humidity of 85-90%, and turned off at a humidity of 60-65%. The method according to claim 1, characterized in that to exclude fog and accumulation of dew on the surface of electric heaters, the latter are perforated.

Claims

1. The method of drying wood in the form of boards, which consists in the fact that the boards are stacked in a stack consisting of packages, at least two layers of boards, with dividing elements in the form of battens; they place film resistive electric heating elements between the packages that overlap the entire transverse area of the stack, and at the base of the stack and on its upper surface lay a series of heating elements equipped with heat flux reflectors located below and above the film electric heaters to direct heat into the stack, supply voltage to the electric heaters , drying is carried out by dry heating using electric heating elements, the drying process is controlled by humidity sensors and and temperature; to remove moisture periodically include exhaust ventilation; the end of drying is judged by humidity readings, characterized in that the drying process is carried out cyclically depending on the temperature of the board heating according to the temperature sensor installed inside the board in the stack: when the heating temperature reaches 40-45 ° C, the power of the electric heaters is turned off, and when reduced to At 35-38 ° C, the electric heaters are turned on again, drying is carried out at a temperature of 35-45 ° C, the drying process is completed in accordance with the set humidity indices of a certain tree species.

2. The method according to claim 1, characterized in that the ventilation is turned on at a humidity of 85-90%, and turned off at a humidity of 60-65%.

3. The method according to claim 1, characterized in that to exclude fog and accumulation of dew on the surface of electric heaters, the latter are perforated.