High frequency vacuum dryer for wood drying is an advanced woodworking machine designed for rapid wood drying and seasoning, offering significant time and energy savings. Its high-frequency waves penetrate wood deeply, making it faster and more uniform than traditional steam drying methods. Operating under vacuum conditions and lower temperatures, the vacuum efficiently draws out wood moisture, effectively doubling heating efficiency.
After drying, the wood exhibits no cracks, shrinkage, or color changes. This technology is particularly effective for various wood types, including large square beams, hardwood, veneer, and rosewood.
High frequency vacuum dryer for wood drying is highly suitable for secondary drying processes, taking 10 to 20 hours based on wood species, thickness, and moisture content variations. With low power costs, a rapid wood turnover rate, easy operation, and space-saving design, it stands as the optimal choice for wood drying across various scales of furniture manufacturing.
Benefits of High Frequency Vacuum Wood Drying
- Fast drying – More than ten times faster than conventional steam kiln
- More selective, flexible and convenient
- Environment friendly, no pollution. Improve working environment and save the labor.
- High drying quality – After drying no shrinkage, no color changing. High outturn rate of wood material and less defect
- Simple technology process and easy to operate
- High comprehensive benefits
- Stress removing – It can remove stress of woods after drying to avoid cracking after drying
- High frequency waves can kill the worm and bacteria in the wood
- Take up less money, capital turnover high
Difference between high frequency vacuum drying and other drying methods
High frequency drying employs an internal heating method where water heats itself, which is a distinct departure from conventional external heating methods (conductive drying methods).
High frequency drying elevates the internal temperature of wood higher than its surface, coupled with pressure differences, enhancing the transfer speed of wood moisture from the inside to the outside. This method provides superior and more efficient heating.
In high frequency wood drying, the distance between two layers of electrodes is maintained at 250-300mm, with the capability to extend up to 500mm. This substantial distance is particularly advantageous for thick wood and hard wood drying, a capability not easily achieved with other drying methods.
High frequency heating reduces the temperature gradient within wood compared to normal heating methods, resulting in significantly less internal stress. This feature makes the wood less prone to cracking.
High frequency vacuum dryer for wood drying is equipped with a hydraulic press. Throughout the drying process, it applies pressure to the wood, ensuring straightness. Post-drying, it retains the wood’s straightness and can make slight corrections if needed.
Operating under vacuum conditions lowers the vaporization temperature, enabling low-temperature wood drying. The combination of high frequency and vacuum helps safeguard wood from issues like cracking, bending, and color changes.
Specs – High frequency vacuum dryer for wood drying
| Model | HFVK-3-ABT | HFVK-4-ABT | HFVK-6-ABT | HFVK-10-ABT | HFVK-13-ABT | HFVK-18-ABT |
|---|---|---|---|---|---|---|
| Loading Capacity | 3cbm 3*1*1m | 4cbm 4*1*1m | 6cbm 6*1*1m | 10.14cbm 6*1.3*1.3m | 13.52cbm 8*1.3*1.3m | 18cbm 10.5*1.3*1.3m |
| Power Supply | AC 380V, 50Hz, 3 phases or custom made | AC 380V, 50Hz, 3 phases or custom made | AC 380V, 50Hz, 3 phases or custom made | AC 380V, 50Hz, 3 phases or custom made | AC 380V, 50Hz, 3 phases or custom made | AC 380V, 50Hz, 3 phases or custom made |
| HF Power | 20kw | 20kw | 30kw | 50kw | 50kw | 80kw |
| HF Frequency | 6.78MHz | 6.78MHz | 6.78MHz | 6.78MHz | 6.78MHz | 6.78MHz |
| Cooling | Wind | Wind | Wind | Wind | Wind | Water |
| Drying Temperatures | 50 to 90 °C | 50 to 90 °C | 50 to 90 °C | 50 to 90 °C | 50 to 90 °C | 50 to 90 °C |
| Temperature Control | 2 pcs of optical fiber sensors | 2 pcs of optical fiber sensors | 2 pcs of optical fiber sensors | 2 pcs of optical fiber sensors | 2 pcs of optical fiber sensors | 2 pcs of optical fiber sensors |
| Vacuum Pressure | up to -0.092MPa | up to -0.092MPa | up to -0.092MPa | up to -0.092MPa | up to -0.092MPa | up to -0.092MPa |
| Control | PLC, HMI Screen; auto shut down after drying finishing | PLC, HMI Screen; auto shut down after drying finishing | PLC, HMI Screen; auto shut down after drying finishing | PLC, HMI Screen; auto shut down after drying finishing | PLC, HMI Screen; auto shut down after drying finishing | PLC, HMI Screen; auto shut down after drying finishing |