How to deal with the frost on the surface of constant temperature and humidity test chamber

In fact, the icing problem of compressor shell in constant temperature and humidity test chamber is not a technical problem The main problem is maintenance For equipment, quality is one hand, maintenance plays a decisive role in the life of constant temperature and humidity test chamber 1 After the process pipe of constant temperature and humidity test chamber is opened, it is not sealed or repaired in time The long-term use of ice cream plus frequent start-up, the air moisture will be brought into the machine from the outside of the nozzle; there are unsealed compressors placed for a long time, without drying treatment, they will be used on ice cream, which will also cause ice 2 After the refrigeration evaporator is damaged, the water molecules in the refrigeration (storage) room will be brought into the compressor together with the water vapor in the air when the refrigeration evaporator is turned on for a long time It can also cause freezing 3 If the evaporator of constant temperature and humidity test chamber is poorly ventilated, the evaporator will be frosted or frozen if the cooling capacity is not taken away, resulting in low pressure and frosting of compressor shell 4 Under the normal working condition of constant temperature and humidity test chamber, refrigerant vapor rather than liquid is sucked back by the compressor If there is too much refrigerant in the refrigeration system and too much refrigerant oil is charged or the flow regulated by the expansion valve is too large, the refrigerant is not completely evaporated in the evaporator, so that the refrigerant is sucked back by the compressor as wet vapor or liquid, and filling will cause freezing 5 The compressor of constant temperature and humidity test chamber compresses the water vapor in the air into water when it is pressurized, and then it is injected into the pipeline, resulting in icing