The penman designed the diameter of tube for led air and tube for supplying air in the device is reducing from upper part to low part, so the...

• 由于蔬菜脱水干燥初期,干燥过程以热风对流换热为主,干燥后期以远红外辐射换热为主,设计的供风管和引风管,其连接管直径自上而下依次减小,因此供给各层干燥箱的热风量自上而下也相应地减小。