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Equipment process principle of desktop blast drying oven
Date: 2025-02-12Read: 5
Desktop blast drying oven is a common drying equipment widely used in industries, laboratories, pharmaceuticals, food and other fields. Today, the editor will take you to understand the equipment and process principles of the desktop blast drying oven, including heating methods, circulating air systems, temperature control, humidity control, and other aspects.
1. Heating method
The heating of a desktop air drying oven can be achieved through various methods, including electric heating tubes, infrared heating, and hot air circulation heating. Among them, electric heating tubes and infrared heating are mainly suitable for small drying ovens, while hot air circulation heating is suitable for large drying ovens.
The principle of electric heating tube is similar to that of infrared heating, both of which convert energy into heat energy through electricity, thereby heating the air in the drying room and achieving the purpose of drying. Differently, the electric heating tube needs to be installed inside the drying oven, occupying a certain amount of space, while infrared heating can be installed outside the oven without occupying the interior space of the drying oven.
Hot air circulation heating is the process of circulating and heating the air inside the drying room through a fan, which can quickly and evenly achieve the drying effect. Hot air circulation heating requires a fan, so it is suitable for large drying ovens.
2. Circulating air system
Desktop air drying oven requires a circulating air system to evenly circulate the air and achieve the drying effect. The circulating air system mainly consists of fans, air filters, fan blades, steam pumps, air heaters, etc.
The fan is the core component of the circulating air system, which is used to suck air into the interior of the drying oven, heat it, and then circulate it through the fan blades to achieve the drying effect. The function of an air filter is to filter out impurities and particles in the air, ensuring air quality. The steam pump and air heater are key components for heating the air, which can bring the air temperature in the drying room to the set temperature.
3. Temperature control
The temperature control of the desktop blast drying oven is an important step in the drying process. The common temperature control methods include ordinary temperature control and microcomputer control.
The ordinary temperature control method usually uses a combination of sensors and electronic control circuits for control, which can basically meet the basic temperature control requirements. The microcomputer control method adopts a combination of microprocessor and sensor control, which can achieve more accurate temperature control and is suitable for higher precision drying requirements.
4. Humidity control
The humidity control of the desktop blast drying oven can be achieved through two methods: humidification and dehumidification. Humidifiers are generally used to increase the air humidity above the set value. Dehumidification methods generally use dehumidifiers or condensers to reduce the humidity in the air.
For different dry materials and drying requirements, it is necessary to choose different humidification and dehumidification methods to ensure the drying effect.