Efficient & Intelligent High-frequency woodworking machinery
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The working principle of high frequency vacuum timber dryer machine
The high frequency vacuum timber dryer machine is a combined drying method of high frequency medium heating and vacuum low temperature drying. The high frequency vacuum timber dryer machine is a fast and almost waste-free drying method, especially suitable for the drying of hardwoods and heavy woods.
High frequency heating:
It is also a high-frequency medium heating. The manufacturer of high frequency vacuum timber dryer machine tells you that the ordinary 380V AC power supply is boosted-rectified and converted into a high-frequency electromagnetic field. The high frequency vacuum timber dryer machine can achieve high Frequency heating.
The manufacturer of high frequency vacuum timber dryer machine tells you that high frequency heating is penetration heating. The water in the electric field is heated uniformly. The part with more water absorbs more high-frequency electric field, while the place with less water only absorbs a small amount of high-frequency electric field. The high-frequency output power is effectively used, while the medium such as wood or fiber does not basically absorb electric field because it has no polarity. 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 lower, the evaporation speed is accelerated, and the moisture content gradient on the surface of the wood increases. The manufacturer of the high frequency vacuum timber dryer machine tells you that during the drying process of the wood, on the one hand, the surface moisture evaporates to the surrounding air. On the other hand, the internal moisture is constantly moving to the surface, so the drying speed is accelerated at a lower temperature, so that the drying quality of the wood can be guaranteed. The manufacturer of high frequency vacuum timber dryer machine 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 drainage of moisture from the wood core. In addition, under low pressure conditions, the drying medium The 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 timber dryer machine to wood drying has become a scientific, environmentally friendly and efficient drying method, especially suitable for wood drying with large hardwood cross-sections.