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Nanjing Aoban Drying Equipment Factory
Structure and Principle of Far Infrared Tunnel Oven
Date: 2024-10-30Read: 20
Far infrared tunnel oven is a commonly used drying equipment in food processing and industrial manufacturing. It uses far-infrared technology to quickly vaporize surface moisture of objects, thereby achieving the purpose of drying.
The far-infrared tunnel oven consists of a heating system, a conveying system, and a control system.
1. Heating system
The heating system consists of far-infrared radiation tubes, which are usually installed on the top and sides of the oven. When the radiation tube is powered on, it can emit far-infrared radiation. Its radiation energy can be absorbed by objects, resulting in thermal effects.
2. Conveyor system
The conveying system consists of a conveyor belt, a transmission device, and rollers. The object enters the oven through a conveyor belt, dries inside, and then exits through the conveyor belt on the other side. The speed of the conveyor belt can be adjusted according to the characteristics of the object and the processing technology.
3. Control system
Control systems typically consist of temperature controllers, time controllers, and electronic components. Its main function is to control the temperature of the heating system and the speed of the conveying system. Adjustments can be made based on the characteristics, quality, and processing technology of the dried object.
The process principle of the far-infrared tunnel oven is to use the radiation energy of the far-infrared radiation tube to vaporize the moisture on the surface of the object, thereby achieving the purpose of drying the object. The air temperature in the oven is relatively fixed, and far-infrared radiation can cause thermal effects on the surface of objects, resulting in the vaporization of surface moisture. Moisture is carried away by the flow of air, gradually reducing the moisture on the surface of the object. At the same time, the humidity in the air will also decrease, reducing the possibility of moisture accumulating on the surface of objects.
The drying process of far-infrared tunnel oven is usually divided into three stages. In the first stage, the ambient temperature in the oven rises and the moisture on the surface of the object begins to evaporate. In the second stage, the moisture on the surface of the object begins to be dried by far-infrared radiation. In the third stage, the moisture on the surface of the object evaporates into light, and the drying process is about to end. During this process, if the temperature or flow rate is unstable, it can cause problems such as surface water accumulation or uneven drying of the object.
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