How to deal with the problem of frosting on the surface of the high and low temperature test chamber

In the process of daily operation and use of the machine, how to deal with the problem of frosting on the surface of the high and low temperature test chamber Some customers will encounter. Then let's discuss and explain this issue to the user department.  

Regarding the icing problem of the compressor shell of the high and low temperature test chamber, in fact, it is not a technical problem, and the main point is the maintenance problem. For equipment, quality is one thing, and maintenance plays a decisive role in the life of the high and low temperature test chamber.

1. After the process pipe of the high and low temperature test chamber is opened, it is not sealed or repaired in time. If the ice and frost are left for a long time and the machine is turned on frequently, the moisture in the air will be carried into the machine from the outside of the nozzle; There are also compressors that have not been sealed for a long time, and if they are used in frost without drying treatment, they will also cause freezing.

2. After the refrigeration evaporator is damaged, the water molecules in the freezer (storage) chamber and the water vapor in the air will be brought into the compressor after a long time of start-up (negative pressure is generated in the generator when the machine is turned on, and the atmospheric pressure will bring the water molecules in the humid air into the machine). It can also cause icing

3. If the evaporator is poorly ventilated in the high and low temperature test chamber, the cold energy can not be taken away, which will also make the evaporator frost or freeze, resulting in low pressure and low pressure, and will also cause frost in the compressor shell.

4. Under the normal working condition of high and low temperature test chamber, the compressor sucks back the refrigerant vapor instead of liquid, if there is too much refrigerant and too much refrigerant oil in the refrigeration system or the expansion valve adjusts the flow too much, the refrigerant is not completely evaporated in the evaporator, resulting in the refrigerant being sucked back by the compressor in a wet vapor or liquid state, and the charging will cause freezing.

5. The compressor of the high and low temperature test chamber compresses the water vapor in the air into water when the pressure leaks, and injects it into the pipeline, which causes freezing. The above explanation hopes that you can be more aware of the frosting problem on the surface of the operation and maintenance of the high and low temperature test chamber.