2026-04-10Views：
With the improvement of users' requirements for the quality of compressed air sources, oil-free air compressors are more and more widely used in some industries with high requirements for the quality of compressed air sources, such as biology, medicine, electronics, food, medical, automotive, chemical and other fields, requiring water, oil, dust, bacteria, etc. to reach a higher level, however, the water, dust and bacteria in the compressed air can be solved by a series of post-processing equipment such as filters and dryers, and oil removal is relatively difficult, but we have some misunderstandings about the oil-free air compressor and the compressed air it produces.
1. The compressed air produced by the oil-free air compressor is oil-free
although no oil is used in the compression chamber, the oil will not contact with the compressed air, but the oil vapor contained in the atmosphere cannot be removed, which makes the compressed air still contain a small amount of oil impurities. After measurement, the oil content in the compressed air produced by the oil-free air compressor is closely related to the air quality, the environment of the air compressor room and the cleanliness in the compressor.
2. Oil-free air compressor does not use oil
although oil is not used to come into contact with the air in the process of compressing the air, oil is still used to cool the compressor and lubricate the operating parts so that the compressor operates normally and stably.
3. The compressed air produced by the oil-free air compressor is pollution-free
there are many pollutants in the atmosphere, including dust, water vapor, oil vapor, microorganisms, etc. The compressed air produced by the oil-free air compressor can only ensure that no oil is brought into the compressed air in the compression project, but the magazine in the air itself cannot be removed. This means that the compressed air produced by oil-free compressors is not necessarily pollution-free, and the use of air treatment products can help reduce pollution to the required level.
4. Oil-free air compressor does not require air handling products
as described in point 3, a large part of the gas quality of the compressed air produced by the oil-free air compressor is subject to the environment, so users need to configure the corresponding post-processing equipment according to their own demand for compressed air quality to meet their own demand for compressed air quality.
5. Low cost of oil-free screw air compressor
in fact, because the compression ratio is much smaller than the oil-lubricated compressor, the energy consumption is higher, and the gas production of the same power-free oil-free oil-free screw compressor is more than 40% less than that of the energy-saving screw compressor. Although the compression chamber is not lubricated by oil, the grease and air filter in other parts still need regular maintenance. The core rotor is generally treated with special coating and has a service life. It has high requirements for water and is easy to be damaged. The maintenance of the main engine is a necessary option for no oil machine. The high cost of the pen can account for 50% of the equipment cost.
We believe that for most users, it is not necessary to truly level 0 oil-free compressed air, but more to solve the problem caused by oil impurities for refrigeration dryers, non-thermal regeneration dryers, micro-thermal regeneration dryers and other water removal equipment The pollution is a choice to prevent the efficiency of post-processing equipment from declining or even losing its water removal function. However, for users who need real grade 0 oil-free compressed air, it is difficult to obtain oil-free compressed air stably and continuously by selecting oil-free air compressor alone, and corresponding oil removal post-treatment equipment still needs to be configured.
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