When consumers buy high and low temperature boxes, they can't just look at the price, but also need to check the performance parameters of the machinery and equipment, such as: uniformity, fluctuation, temperature range, elevator temperature speed, etc. The uniformity among them is something that people must pay attention to. One of the main parameters of the machine, there is more or less uniformity in the use of machinery and equipment, so I will analyze the reasons for everyone below:

1. The heat conduction of the box wall is uneven

In the natural environment of the high and low temperature test, thermal damage such as heat leakage of the high and low temperature box or heat leakage of the ultra-low temperature box is caused due to heat conduction. The working temperature in the box is higher than that of the ultra-low temperature box during operation. Due to a certain temperature difference of the supply air, the temperature in the working room is not uniform.

2. Poor sealing

The sealing performance of the small box is not very good. For example, the door leaks, which will affect the uniform temperature of the machine and equipment studio.

3. The structure is different

The structure of the high and low temperature box has a great impact on the uniformity of the temperature in the middle of the test. Since the structure cannot be completely symmetrical, it has a bad impact on the temperature uniformity. The door is in front, the air-conditioning room is behind the shell, and the air is supplied from the top. Air supply. The structure is symmetrical from top to bottom, and it is easier to achieve uniform temperature at the top and bottom.

4. The sample volume is very large

If the temperature measurement error stipulates that the test product is placed in the operating room, when the test product has a large volume, or the placement method is unreasonable, the air convection will be blocked, and at the same time, a relatively large temperature error will be caused.

From a comprehensive point of view, the uniformity of the high and low temperature box is mainly due to the above four levels. If we strictly follow the actual operation of the industry standard in the production process and operation process, the above problems can be prevented.