本文通过对蒸汽、微波及电热远红外三种形式干燥设备的木材干燥物理过程的分析指出,与对流加热的蒸汽干燥和辐射加热的微波干燥相比,电热远红外木材干燥的传热方式是与红外辐射为主,对流为辅的联合干燥方式;其木材内部升温特性介于对流干燥与微波干燥过程之间;木材内部水分扩散的动力学过程是热扩散与湿扩散方向一致。上述机理,同样适用于粮食、人参等干燥过程的分析。 In this paper, through the analysis of the wood drying physical process of steam, microwave and far-infrared far-infrared drying equipment, it is pointed out that compared with the convection-heated steam drying and radiation heating microwave drying, the far- Infrared radiation and convection supplemented by a combined drying method. The internal temperature-rising characteristics of wood ranged from convection drying to microwave drying process. The dynamic process of wood internal moisture diffusion was consistent with the directions of thermal diffusion and wet diffusion. The above mechanism, the same applies to food, ginseng and other drying process analysis.