An oil-free scroll air compressor operates using two interleaved spiral scrolls to compress air. One scroll is fixed, while the other orbits eccentrically without rotating. As the orbiting scroll moves, it creates a series of crescent-shaped gas pockets between the two scrolls.
The process begins at the outer edge of the scrolls, where air is drawn into the outermost pocket. As the orbiting scroll moves, the air is trapped and pushed towards the center of the scrolls. This movement reduces the volume of the air pockets, compressing the air as it moves inward. The continuous motion of the orbiting scroll ensures a steady intake and compression of air, resulting in a smooth, pulse-free flow of compressed air.
Since the scrolls do not touch, there is no need for lubrication, making the compressor oil-free. This design minimizes contamination risks and maintenance requirements, as there are no oil changes or filters to replace. The lack of metal-to-metal contact also reduces wear and tear, enhancing the compressor's longevity and reliability.
The compressed air is discharged from the center of the scrolls, where it can be directed to storage tanks or directly to pneumatic tools and systems. The oil-free nature of the compressor makes it ideal for applications requiring clean air, such as in food processing, pharmaceuticals, and electronics manufacturing.
Overall, the oil-free scroll air compressor is efficient, quiet, and environmentally friendly, providing high-quality compressed air without the need for oil lubrication.