Refrigeration oil is the key to the long-term high-speed operation of the compressor

Time:2017-10-24 12:00:00

The refrigerating machine oil of a car is mainly used to lubricate the parts of the refrigeration compressor that require lubrication.




About the performance and selection of refrigeration oil






Refrigeration oil is the key to the long-term high-speed operation of the compressor


1. Refrigeration oil performance




The refrigerating machine oil is used to lubricate the friction pairs of the refrigeration compressor, which is the key to the long-term high-speed operation of the compressor. At work, a portion of the refrigeration oil enters the condenser, expansion valve, and evaporator with the refrigerant through the cylinders of the refrigeration compressor. This requires that the refrigeration oil not only has the characteristics of a general lubricant, but also the special requirements of the refrigeration system. There should be no adverse effects on the refrigeration system.




In order to ensure the normal operation of the refrigeration system, the refrigerating machine oil must have excellent chemical stability when coexisting with the refrigerant, excellent mutual solubility with the refrigerant, good lubricity, excellent low-temperature fluidity, and no wax. Floc-like separation, no water, no mechanical impurities and excellent insulation properties. It can be seen that the performance requirements for refrigeration oil are not only comprehensive but also strict. Therefore, the refrigerating machine oil is a kind of lubricating oil for the refrigeration system, and it must not be replaced by ordinary lubricating oil.






Refrigeration oil is the key to the long-term high-speed operation of the compressor


2. Performance requirements for refrigeration system components for refrigeration oil




(1) Compressor requirements for refrigerating machine oil: 1 has excellent chemical stability when coexisting with refrigerant; 2 has good lubricity; 3 has excellent mutual solubility with refrigerant; 4 pairs of insulating materials and sealing materials Excellent adaptability; 5 does not contain mechanical impurities; 6 has good anti-foaming properties.




(2) Refrigerant oil requirements of the condenser: Excellent compatibility with the refrigerant.




(3) Refrigerant oil requirements for the refrigerating machine oil: 1 no waxy floc separation; 2 no water; 3 no mechanical impurities.




(4) Refrigerant oil requirements for the evaporator: 1 has excellent low temperature fluidity; 2 wax-free floc separation; 3 no water; 4 excellent mutual solubility with refrigerant.


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