Since the introduction of oil free air compressors, their applications have become increasingly diverse. The following summarizes several common application areas for oil free air compressors:
- Electroplating and Copper Plating Industry: In the cleaning process of electroplating, a compressor is used to remove water from the surface of objects. The use of oil free air compressors helps maintain the cleanliness of the electroplating process.
- Medical Industry: The medical industry, including pharmaceutical manufacturing and medical instrument air supply, requires clean compressed air. Oil-free compressors meet these standards and are highly favored in the medical sector.
- Laboratory Applications: Laboratories often use compressed air for various experimental procedures. Insufficient air purity can lead to reactions with chemicals, resulting in experimental failure or, in severe cases, safety incidents.
- Electronics Industry: The electronics industry demands precision in the production of components, where every detail is crucial.
- Chemical Industry: Used to enhance the quality of chemical products and ensure process and production safety.
- Mining Industry: Many minerals are flammable and explosive, and being located underground, the use of oil-free compressors reduces the risk of accidents.
Oil free air compressors have evolved from oil-lubricated compressors, mainly through two methods: using water instead of oil or applying self-lubricating coatings on rotors. The latter involves sealing the lubrication space of the rotor bearings with the compression space, resulting in high machining precision and significant costs.
However, one drawback is the susceptibility to damage in case of seal failures. If the main unit of an oil-free compressor experiences a malfunction, the high precision necessitates repairs by the manufacturer, increasing irreparability. Hence, it is advisable for non-large-scale enterprises to carefully consider before acquiring oil-free compressors.
In air compressors, the terms ‘oil’ and ‘oil-free’ generally refer to the amount of oil in the discharged gas. Typically, oil-lubricated compressors have a higher oil content, while oil-free compressors aim for an oil content of 0.01 ppm. Another type is the fully oil-free air compressor, which utilizes resin material for lubrication. However, the quality of such compressors is not entirely satisfactory, and most oil-free compressors in the domestic market use oil lubrication.
Compressed air in the air compressor’s storage tank occupies a certain space without a fixed shape and volume. When pressure is applied to the air in a closed container, the volume of air is compressed, increasing internal pressure. Upon release of external force, the air, under internal pressure, returns to its original volume, pushing out any movable object within the container. This principle finds widespread applications in production and daily life, such as inflating a ball or pressurizing tires.
Compressed air is the second-largest power source after electricity and serves as a versatile process gas in industries spanning petroleum, chemical, metallurgy, power, machinery, light industry, textiles, automotive manufacturing, electronics, food, medicine, biotechnology, defense, research, and more.
Unfortunately, compressed air often contains a significant amount of impurities, including solid particles, moisture, oil, and microorganisms, posing challenges to equipment performance and longevity. Addressing these impurities through proper filtration and treatment is essential for maintaining a reliable compressed air system.