How the high frequency vacuum wood dryer works

High frequency vacuum wood dryer is a combined drying method of high-frequency medium heating and vacuum low-temperature drying. It is a fast and almost waste-free drying method, especially suitable for drying hardwood and heavy wood.

High frequency vacuum wood dryer manufacturers tell you that high-frequency heating is penetrating heating, and the moisture in the electric field is heated evenly. The power output by the high frequency is effectively used, and the medium such as wood or fiber basically does not absorb the electric field because it does not have polarity, and the high frequency power is basically used without waste, which saves energy consumption to the greatest extent and reduces drying costs.
In the vacuum state, the boiling point of water in the vacuum state is low, the evaporation speed is accelerated, and the moisture content gradient on the surface of the wood increases. During the drying process of the wood, on the one hand, the surface moisture evaporates into the surrounding air, and on the other hand, the internal moisture continuously evaporates. Moves towards the surface, so drying is accelerated at lower temperatures, which preserves the dry quality of the wood. The high frequency vacuum wood dryer manufacturer tells you that the vacuum state is a negative pressure state, which has a certain water absorption effect, which is exactly similar to the high frequency pressure gradient, and also accelerates the water discharge from the wood core. In addition, under low pressure conditions, in the drying medium Oxygen is scarce, and the material discoloration caused by heat and oxidation is less, and the natural color of precious wood can basically be maintained.
Based on the above characteristics, the application of high frequency vacuum wood dryer to wood drying has become a scientific, environmentally friendly and efficient drying method, especially suitable for drying wood with a large cross-section of hardwood.