详情描述


High-frequency Vacuum Drying Working Principle:
High-frequency vacuum drying is a combined drying method that utilizes high-frequency medium heating and vacuum low-temperature drying. It is a rapid and nearly waste-free drying process, particularly suitable for drying hard woods and thick, valuable timbers.
High-frequency heating
Also known as high-frequency medium heating, it involves boosting a standard 380V AC power supply to an elevated voltage, then rectifying it to create a high-frequency electromagnetic field. High-frequency heating can be achieved through related equipment equipped with anode and cathode plates.
High-frequency heating is a penetrating type of heating, where water in the electric field is uniformly heated. Areas with more moisture absorb more high-frequency electric field, while areas with less moisture absorb only a small amount. This ensures the effective utilization of high-frequency output power. Since materials like wood or fibers do not possess polarity, they do not absorb the electric field significantly, making the high-frequency power usage essentially waste-free. This saves energy consumption and reduces drying costs.
Vacuum condition, primarily utilizing the lower boiling point of water under vacuum, which accelerates evaporation rates and increases the moisture gradient on the wood surface. During the drying process, the wood's surface moisture evaporates into the surrounding air, while internal moisture continuously moves towards the surface. This accelerates the drying process at lower temperatures, ensuring high-quality wood drying. The vacuum state is a negative pressure condition with a certain moisture-absorbing effect, similar to the high-frequency pressure gradient, which also speeds up the removal of moisture from the wood core. Additionally, under low-pressure conditions, the oxygen in the drying medium experiences less color change due to thermal and oxidative reactions, thereby maintaining the natural color of valuable wood.

Based on these characteristics, the high-frequency vacuum drying applied to wood drying has become a scientific and environmentally friendly drying method, particularly suitable for drying wood with large cross-sections of hardwoods.

Tenglong High-Frequency Vacuum Wood Drying Machine Features:
One: High-frequency heating is used to achieve rapid temperature rise and fast drying of wood.
Two, both interior and exterior wood heating ensures even heating, high quality, and maintains the natural color of the wood.
Three: Vacuum suction reduces the temperature during the wood drying process, causing low-temperature vaporization of the wood, making it less prone to cracking and increasing the dehydration speed of the wood.
Four: Environmentally friendly, no pollution.
Five, high-frequency waves can kill insects and pathogens hidden within the boards, further ensuring the quality of wood drying while shortening the drying cycle.
Especially suitable for thick, hard, large-section square timbers (requiring a long time with conventional drying methods), such as precious rosewood like檀香木, 鸡翅木, and 黄花梨, as well as the drying of wooden flooring.
Also employs secondary drying of wood after moisture return in small batches and expedited processing.

Tenglong High-Frequency Vacuum Dryer Specifications:
Automatic control via an intelligent human-machine interface; operators only need to set basic parameters such as drying process, initial moisture content, and the target final moisture content; the entire drying process is automatically controlled by the program.
2. High-frequency automatic tuning, no manual adjustment required; the fault detection system constantly monitors the equipment's operational status, and in case of a fault, the equipment will shut off power, trigger an alarm, and prompt fault information.
3. Utilizes online, real-time moisture content monitoring for humidity detection, allowing for immediate assessment of wood moisture content to ensure accurate moisture monitoring.

4. Temperature is measured by a fiber optic temperature detection device, ensuring accuracy without high-frequency interference. The temperature detection is solely for ensuring the drying effect, avoiding the severe data error issue that common metal probes face in the electric field.