Air conditioning fluorine mainly refers to freon, which is a common refrigerant that is widely used in refrigeration, foaming, solvents, sprays, cleaning of electronic components and other industries.
There are many types of freon, the common ones are R22, R32, R134A, etc. Freon is generally a gas at room temperature and pressure, with a slight aromatic flavor. It is a transparent liquid under low temperature pressure. It is miscible with halogenated hydrocarbons, monoalcohols or other organic solvents in any ratio, and it is also miscible with fluorinated refrigerants. Because Freon has strong chemical stability, thermal stability, low surface tension, non-toxic, lipophilic, low price, etc.
Classification of fluorine for air conditioners.
Air conditioning fluorine is roughly divided into three categories: chlorofluorocarbons (referred to as CFCs, mainly including R11, R12, R13, R14, R15, R500, R502, etc.), hydrochlorofluorocarbons (HCFCs, mainly including R22, R123, R141B, R142B, etc.), hydrofluorocarbons (referred to as HFC, mainly including R134A, R125, R32, R407C, R410A, R152, etc.).
Among them, freons such as: R22, R134A, R32, etc., although they are relatively safe to use, they are flammable and will burn to produce toxic gases when encountering open flames, so open flames should be strictly prohibited when there are these freons.
How to determine the model of air conditioner fluoridation?
The aircon refrigerant model can be viewed in the following ways:
1.The nameplate parameters on the nameplate of the fuselage are the most direct information, you can check the parameters on the nameplate of the fuselage of the compressor, and the refrigerant model will also be marked.
2.There is also information on the nameplate of the compressor body, you can check the parameters on the nameplate of the compressor body, and the refrigerant model will also be marked.
3.It can also be determined according to the maximum operating refrigerant pressure value indicated on the nameplate, for example, R32 refrigerant above 5 bar, and R22 refrigerant below 5 bar.
4.You can see the label on the nameplate of the external unit of the air conditioner, and there are two main refrigerant types: R22 freon and R410 environmentally friendly refrigerant.
5.In addition to the above methods, it can also be distinguished by the fluoride addition port of the three-way valve, the fluoride addition port of R22 refrigerant is small, and the fluoridation port of R410A refrigerant is larger than that of R22.
Different types of refrigerants are different in terms of characteristics, uses, charging capacity, charging pressure, and harm to the human body. Therefore, when it comes to air conditioner maintenance, it is necessary to choose the appropriate refrigerant model according to the specific situation.
How much does it cost to add fluoride to an air conditioner?
There is no unified charging standard for air conditioning fluoride, and it is common to charge according to pressure, and different fluorine charging standards are also different. For R22 refrigerant, the current charging standard is about 40 yuan a pressure, for a 1For a 5P air conditioner, it is enough to reach 5 pressures.
It is theoretically reasonable to charge for fluoridation based on pressure, but in the actual maintenance process, it is inevitable that more fees will be charged by misreporting. Generally speaking, the after-sales service provided by the manufacturer is more reasonable, such as the current Gree air conditioner (15p) add 100 yuan of refrigerant, refill 160 yuan of refrigerant, and the charging standard of different types of refrigerant is consistentMidea Air Conditioner 15P model, 100 yuan of ordinary refrigerant and 140 yuan of environmentally friendly refrigerant. Compared with fluoride according to pressure, it is much more reasonable.
And how to determine whether the air conditioner at home needs to be fluoridated?We can judge from the following points.
Air conditioner that has been used for more than 5 years. Air conditioner for multiple moves. In summer, the exposed part of the thick pipe (i.e., the low-pressure pipe) at the connection point of the external unit does not condense or is not cool. In summer, the exhaust air of the external fan is not hot. In summer, the return air pressure (thick tube) is less than 04 MPa case. When the operating current of the compressor is less than the normal value indicated on the nameplate. In case of frost on the high-pressure pipe (thin tube) in summer. There is fluorine leakage in the air conditioner, and it is necessary to find the leakage point and add fluoride.
In conclusion, what fluoride to add to an air conditioner requires a deeper understanding to guarantee safety and accuracy. If you are not familiar with the relevant knowledge, please seek help from professional and technical personnel in time.