Eco-Conscious Water-Lubricated Air Compressor

Water-lubricated compressors use water as the lubricating and cooling medium instead of oil, so the compressed air stays oil-free at the source. Luoyou's water-lubricated screw range runs from 5.5KW to 250KW and covers 8 bar and 10 bar working points, sized for industrial clients in food, beverage, pharmaceutical, electronics, and textile production, where oil contamination is not acceptable. For plants that cannot accept oil carryover in process air, the water-lubricated design removes that risk at the machine level instead of relying on downstream filtration. The following sections cover the working cycle, the main advantages, the application scenarios, and the full specification range.

Working Principle of the Water-Lubricated Oil-Free Air Compressor

Intake Process

Ambient air is drawn through an intake filter that removes initial contaminants; rotating impellers then supercharge the air before it enters the compression stage.

Compression Stage

The air enters an oil-free screw mechanism with fixed and movable screws. As the rotors turn, the movable screw compresses the air against the fixed screw, with water acting as both lubricant and cooling agent.

Cooling Stage

Compression raises the air temperature, and a dedicated water-cooling system circulates water through cooling pipes to bring it close to the suction temperature, which improves compression efficiency.

Separation and Drying

The cooled air passes through a separator that removes water and residual particles; adsorption or condensation dryers then remove the remaining moisture to meet the required dryness level.

Emission Stage

The finished oil-free air is stored in a dedicated container and released through discharge valves to the service system as needed, keeping a steady supply for the application.