The entire series of CMN oil free air compressors are certified by German TUV Rheinland for oil-free, in cordinate with level of Class 0. Unlike traditional dry type oil free air compressors that rely on seals to prevent oil from coming into contact with air, CMN oil free air compressors do not contain any lubricating oil in the entire machine, ensuring a lifetime supply of pure oil free compressed air. CMN, as a oil free compressor supplier, the compressor adopts permanant magnet variable frequency motor to ensure high efficiency.
Due to the contact between the mechanical components during rotation, lubrication with a certain medium is required.
For an oil injected air compressor, the air end is lubricated with lubricating oil. Air and oil are mixed and compressed in the air end, resulting compressed air with oil.
The oil free air compressor is lubricated with water instead of oil. Water is injected into the air end and compressed with air, serving the functions of lubrication, sealing, and cooling. The mixture is separated through a water gas separation tank, suplying pure oil free compressed air.
CMN, as a oil free compressor supplier, the products include screw type compressor and scroll type compressor.
In a screw air compressor, the air end consists of a main screw and two star wheels. Air filtered through an air filter is sucked into the air end, and the motor drives the air end to rotate. During the rotation, the volume of the compression chamber formed by the screw and star wheels continuously decreases, compressing the air to the high pressure end. The compressed air then enters the water gas separation tank for centrifugal separation, compressed air is discharged through the minimum pressure valve.
Scroll air end is composed of a stationary disk and a moving disk, forming a compression chamber.
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