HF vacuum dryer in Canada
High-Frequency Vacuum Wood Dryer in Canada
Chief Manager Mr.Leo and Technician Mr.Jack installed the high-frequency vacuum wood dryer in Canada at the end of 2015
This is one set full auto-type vacuum kiln. You can read the moisture content from the screen.
High frequency is also called radio frequency, it is a kind of direct heating.
The principle is using the wood as a medium, capacitor is a group between two pieces of the metal plate.
Then give them voltage, the electric field produced between the two plates.
The water molecules between electrodes will be polarized by the alternating magnetic field and move at a very high speed rapidly.
The impact and friction (billions of times per second) among water molecules create heating in a very short time.
The conventional steam kiln or common vacuum kiln uses the heating transfer to dry the wood from surface to core.
High-frequency power does not heat wood moisture but lets wood moisture heat itself.
It is a kind of direct heating, This continuous effect let the whole wood heated surface to the core wholly and uniformly.
That is one of the reasons why the high-frequency vacuum machine is 10 times faster than a conventional wood drying kiln.
As our customer Mr.Paul says, the 2″ thickness black walnut, ash, and maple dry to 6-8%MC only take 8 days.
Our kiln also adopts vacuum dehydration technology.
The stainless steel vacuum pump can make the vacuum oven reach -0.093Mpa condition.
The vacuum condition is to let water vaporize at a low temperature below 55 ℃, At the same time, a vacuum can also suck the wood moisture out.
The machine cooling system will separate the hot air and hot water out, then cool them and release them out.
Wood is drying under a vacuum and in wet condition at low temperatures. That will ensure the wood is no cracks and keep the wood’s natural color.
