1. Introduction

Infrared blast drying oven is widely used in industrial production and laboratory research, which can quickly and effectively dry items. However, poor temperature uniformity is an important issue that affects the drying effect. This article will focus on exploring the optimization of fans and air ducts to solve this problem.

2、 Analysis of the Reasons for Poor Temperature Uniformity of Equipment

（1） Fan factor

1. Improper selection of fan, insufficient air volume or pressure, unable to fully circulate hot air.

2. Unstable fan speed leads to airflow fluctuations and affects temperature distribution.

（2） Air duct factors

1. The air duct design is unreasonable, with narrow and curved areas that hinder the circulation of hot air.

2. The air duct has poor sealing and air leakage, which reduces the effective circulation of hot air.

3、 Optimization techniques for wind turbines

（1） Reasonable selection of fans

1. According toInfrared air drying ovenCalculate the required air volume and pressure based on factors such as volume, required temperature range, and heating power, and select the matching fan model. For example, for larger capacity drying ovens, centrifugal fans with high air volume and pressure should be selected.

2. Consider the efficiency and stability of the fan, and choose products with reliable quality and excellent performance. You can refer to the usage experience and professional reviews of other users to choose the appropriate brand and model.

（2） Adjust the fan speed

1. Adopt variable frequency speed regulation technology to flexibly adjust the fan speed according to actual needs. In the early stage of drying, the fan speed can be appropriately increased to accelerate the circulation of hot air and shorten the drying time; In the later stage of drying, reduce the fan speed and maintain a stable temperature environment.

2. Install speed sensors and controllers to monitor the fan speed in real time and automatically adjust it to ensure the stability of the speed.

4、 Optimization techniques for air ducts

（1） Optimize air duct design

1. Try to minimize the bending and narrow parts of the air duct and keep it unobstructed. Large rounded corners and widened air ducts can be used to reduce airflow resistance.

2. Reasonably arrange the positions of the air inlet and outlet, so that hot air can form a good circulation inside the equipment. For example, the air inlet can be set at the bottom and the air outlet at the top, utilizing the principle of hot air rising to promote natural convection.

3. Add guide plates and diversion devices to evenly distribute hot air inside the drying oven. The deflector can be customized according to the shape and size of the equipment to ensure that hot air can cover every corner.

（2） Improve the sealing performance of the air duct

1. Check if the connection of the air duct is tight, and if there are gaps, seal them in a timely manner. High temperature resistant sealants, rubber pads, and other materials can be used for sealing.

2. Regularly inspect and maintain the air duct, promptly identify and repair damaged parts, and ensure the sealing of the air duct.

5、 Conclusion

By optimizing the fan and air duct, the problem of poor temperature uniformity in the infrared blast drying oven can be effectively solved. In practical work, the fan model should be selected reasonably according to the specific situation of the equipment, the fan speed should be adjusted, the air duct design should be optimized, and the air duct sealing should be improved to ensure the performance and effectiveness of the equipment. At the same time, it is necessary to strengthen the daily maintenance and management of equipment, regularly check the status of fans and air ducts, timely discover and solve problems, and extend the service life of equipment.