Shock! The culprit that damages car air conditioners-fake refrigerant (fluorine) and fake refrigerant oil (fluorine oil)

Refrigeration oil (fluorine oil), as one of the important factors affecting the automobile air-conditioning refrigeration system, is often ignored by the majority of car owners because of its small amount. In fact, in addition to the use of genuine automobile refrigerants, a combination of genuine and high-quality refrigerating oil is needed to achieve a better cooling effect. Today? Let’s focus on the supporting product of automobile refrigerant-refrigerating oil (fluorine oil).

The meaning and function of refrigerating oil

The oil used for the lubrication of the moving parts in the refrigeration compressor is called refrigerating oil. In the compressor, the refrigerating oil mainly plays the functions of lubrication, sealing, cooling and energy adjustment.

The difference and impact of refrigerating oil and mineral oil

In order to protect the ozone layer, the Montreal Protocol proposes to phase out Freon R12. The alternative refrigerant is R134a. According to national regulations, from January 1, 2002, new domestic vehicles must use the environmentally friendly refrigerant R134a. Matching with R134a is PAG, POE type lubricant. The replaced R12 is matched with mineral oil.

　　 The price of R134a is higher than that of R12, and the price of PAG or POE refrigerating oil matched with R134a is higher than that of mineral oil matched with R12. There are many refrigeration oils on the market that are nominally suitable for R-134a, and the price is as low as two or three yuan per can. Most of them use R-12 mineral oil as an impersonation. This is an open secret in the industry. Because of the difference between the two There is a certain spread, so there are a large number of counterfeit and shoddy R134a refrigerants and corresponding oils (mostly mineral oils) of counterfeit and shoddy R134a refrigerants on the market. The use of these fake and inferior R134a refrigerants or mismatched refrigeration oils will cause serious damage to the automobile air conditioning system, and ultimately damage the interests of the car owners.　　The new R134a system is specially designed for R134a; in the same way, the old R12 system is also specially designed for R12. R134a refrigerant and Freon R12 are two different substances. R134a is a refrigerant with strong molecular polarity. It is non-co-soluble with mineral oil, oil and water are separated, and cannot play a smooth role in the air conditioning system. The refrigerating oil for the R134a system is PAG or POE refrigerating oil; while the refrigerating oil for the R12 is mineral oil. If R12 is added to the R134a system, it can be refrigerated in a short time, but long-term use will cause serious damage to the car air-conditioning system, until it damages the expensive car air-conditioning compressor; If the R134a system is filled with fake and shoddy products R134a refrigerating oil (mostly mineral oil), because R134a is incompatible with mineral oil, it will also cause serious damage to the air-conditioning compressor. At the same time, due to the poor adaptability of the R134a air-conditioning system component materials to mineral oil, It may cause the leakage of refrigerant, and produce a large amount of sludge deposits and other phenomena.

　 The air-conditioning system using R134a as the refrigerant uses fake and inferior refrigerants, Or the use of fake and inferior refrigeration oil will cause serious damage to the car's air-conditioning system. (The picture below shows an automobile air-conditioning compressor damaged by inferior refrigerant) 　　

? Reminder: 　　1, R12 and R134a can only be used in the corresponding air-conditioning system. R134a is the refrigerant of the automobile air-conditioning system. For the system, the manufacturer will mark the R134a logo on the compressor, condenser, evaporator, rubber tube and filling equipment to prevent misuse. (Generally, it can be distinguished from the R134a refrigeration system or the R12 refrigeration system by the following methods: It can be judged from the interface form of the filling and inspection port of the air conditioning system. The R134a refrigeration system interface uses a ratchet type, and the interface diameter of the high and low pressure pipes is different; R12 The refrigeration system adopts the screw type, and the high and low pressure interface diameters are the same. At the same time, the car refrigeration system model label is usually affixed on the water tank grille or the condenser heat dissipation grid.) 　　2, the fake and inferior R134a is used in the car The following failures have occurred in the air conditioning system①, compressor seizure, valve breakage, oil deterioration and peculiar smell.　　②, the expansion valve to the inlet of the evaporator, and even the liquid storage dryer, etc. have accumulated waxy emulsions, which block the refrigeration circuit (it is also related to the unreasonable matching with the lubricating oil), and it is quite difficult to remove these accumulations.　　③, the sealing material of the compressor is deformed, causing the refrigerant to leak slightly.　　④. After running for a period of time (sometimes the second day after adding refrigerant), the cooling capacity of the system is significantly reduced.　　⑤, the condenser and the refrigeration pipeline burst.　　3. The use of fake and inferior R134a corresponding refrigerating oil (mostly mineral oil) can easily cause the following consequences: 　　①, the oil circulates in the cooling and heating cycle system.　　①. Because the refrigerant has no lubricity, it causes excessive friction of the compressor components, resulting in sintering, and damage to the air-conditioning compressor.　　③, the compressor components and the materials in the circulation system may be poorly compatible, resulting in leakage of refrigerant and a large amount of sludge deposits.

4. When buying automobile refrigerant and refrigerating oil (fluorine oil), you must choose a big brand

Car refrigerant can be selected: ?,, car servant, gold Well-known brands such as Leng

Air conditioning refrigerating oil can be selected: Bingxiong, Jinlian, and other brands

Through the serialization of ?, I believe everyone has a new understanding of the maintenance of automotive air conditioning systems . We will introduce other related knowledge of refrigeration and car maintenance in the future, so stay tuned!

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