Oil-free air compressors come in many types, each with its own characteristics and application scope. Major types include oil-free screw compressors, oil-free piston compressors, and oil-free scroll compressors.
1. Oil-free screw compressors: These operate on the same principle as oil-injected screw compressors, but with separate air and oil circuits. They are suitable for industries like pharmaceuticals, hospitals, food processing, and industrial products, with air consumption volumes of 8 to 60 cubic meters per minute. However, they are more expensive.
2. Oil-free piston compressors: These are primarily used in applications with relatively low air consumption, with output generally not exceeding 600 L/min and pressures ranging from 3 to 8 bar. These types are commonly used in dental clinics and laboratories, and are relatively affordable.
3. Oil-free scroll compressors: These compressors typically produce 0.1 to 2 m³/min of air and are suitable for laboratories, hospitals, and other industries. They offer complete oil-free operation and are relatively affordable. Its oil-free design provides high-quality, oil-free compressed air, ensuring hygiene and safety during production.
4. Oil-free centrifuge: Suitable for companies with large gas consumption, such as those working in the lithium materials and pharmaceutical industries. Its gas output exceeds 70 m³/min, but its price is higher.
5. Oil-free water-lubricated air compressor: This uses pure water and air for compression, is completely oil-free, and is relatively inexpensive, but its gas output is relatively low, making it generally only suitable for micro-equipment.
6. Oil-free rotary gear air compressor: An efficient and reliable air compressor suitable for industries such as pharmaceuticals, hospitals, food processing, and industrial products. It is suitable for laboratories, hospitals, food processing, and industrial products that require high-quality, oil-free compressed air with gas consumption between 2 and 10 m³/min.
In summary, choosing an oil-free air compressor should be based on your actual needs and budget. For applications requiring high compressed air quality, oil-free screw air compressors are a good choice; for companies with large air consumption, oil-free centrifuges are a better choice; and for smaller air consumption scenarios or equipment with limited budgets, oil-free scroll air compressors may be a more economical choice.