The traditional method of drying wood is to dry it naturally under the sun, but this method is slow, occupies a large space, and has low drying efficiency. Although there are some wood drying equipment available, they have low thermal efficiency and high energy consumption. Moreover, most of them adopt the method of introducing hot air from the bottom. Introducing hot air from the bottom often causes the bottom wood to be heated for a long time, which may even lead to carbonization of the wood, while other parts of the wood are not adequately heated, resulting in uneven heating and drying of the wood in the drying chamber. This affects the drying efficiency and quality of the wood. Changing the traditional bottom air intake to end air intake avoids the risk of carbonization and spontaneous combustion caused by prolonged contact of the bottom of the pile with high temperature when air is introduced from the bottom. This electric heater for drying wood (air duct electric heater) has a reasonable layout, high thermal efficiency, and rapid temperature rise. It offers two humidity control methods: hot water and steam, allowing timely humidity adjustment according to the process requirements during drying, resulting in uniform and effective wood drying. When using wood waste as fuel, production costs are reduced. When using electric heating, labor is saved. At the same time, for wood products such as wooden doors, windows, mirror frames, picture frames, wooden tools, wooden furniture, plywood, etc., that are imported after deep processing such as heating or pressing, an official quarantine certificate from the exporting country (region) is not required. If an official phytosanitary certificate cannot be provided, inspection can still be accepted. Each bureau may implement quarantine according to the specific conditions such as the wood species, processing degree, and epidemic situation of the exporting country (region).
