Refrigeration oil is used for the lubrication of the moving parts in the refrigeration compressor, which is called refrigeration oil or lubricating oil for short. Our central air conditioning needs to change the refrigeration oil regularly to ensure the smooth operation of the central air conditioning. Previously, the coldest bacteria were asked if the color of the frozen oil will have any impact on the central air conditioning. Today, CRR intercooler will give you an analysis of how to judge the quality of refrigeration oil.

What are the functions of refrigeration oil

What is the effect of darkening the color of refrigeration oil on central air conditioning?

   in compressor, refrigeration oil mainly plays four roles: sealing, energy regulation, cooling and lubrication.

   1. Sealing

   refrigeration oil plays a sealing role in the compressor, which makes the piston and cylinder surface in the compressor and the rotating bearings achieve the sealing effect, so as to prevent the leakage of refrigerant.

   2. Energy regulation

   for refrigeration compressor with energy regulating mechanism, the oil pressure of refrigeration oil can be used as the power of energy regulating machinery.

        3. Cooling

   when the refrigeration oil is lubricated between the moving parts of the compressor, the heat generated in the working process can be taken away, so that the temperature of the moving parts can be kept at a low level, so as to improve the efficiency and reliability of the compressor.

   4. Lubrication

   refrigeration oil plays a lubricating role in the operation of the compressor, so as to reduce the friction and wear degree of the compressor, so as to prolong the service life of the compressor.

2. Why does frozen oil deteriorate

What is the effect of darkening the color of refrigeration oil on central air conditioning?

   first of all, we need to know why the frozen oil has deteriorated. The main causes of metamorphism are as follows

   (1) mixed with water

   because of the air infiltration into the refrigeration system, the moisture in the air is mixed with the refrigeration oil after contacting; when the water content in the refrigerant is large, the water will also mix into the refrigeration oil. When water is mixed into the refrigerator oil, the viscosity is reduced and the metal is corroded. In freon refrigeration system, "ice jam" phenomenon will be caused;

   (2) oxidation

   during the use of refrigeration oil, when the exhaust temperature of compressor is high, it may cause oxidation deterioration, especially the refrigeration oil with poor chemical stability, which is more likely to deteriorate. After a period of time, residue will be formed in the refrigeration oil, which will deteriorate the lubrication of bearings, etc. Organic fillers, mechanical impurities, etc. mixed into the frozen oil will also accelerate its aging or oxidation

   at this time, the viscosity of refrigeration oil will be reduced, and even the formation of oil film will be damaged, so that the bearing will be damaged; if the two kinds of refrigeration oil contain antioxidant additives of different properties, when mixed together, they may produce chemical changes and form sediment, which will affect the lubrication of the compressor. Therefore, attention should be paid when using.