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With more than 20 years manufacturing experience in compressed air filed, CMN, as a oil free screw compressor manufacturer, the products including oil-less air compressor, oil-free air compressor, all kinds of special gas compressor and matched after treatment equipments. Certified with ISO9001, ISO14001, TUV, CE and other certifications, our products offers various compressed air solutions with FAD ranging from 15cfm to 2087cfm, pressure ranging from 2bar to 45bar. With continued R&D investment, CMN, the oil free screw compressor manufacturer has launched world's first 40bar oil free screw air compressor with water lubricated air end and world's first 1.2MPa scroll air compressor which filled international gap.

Thermal adsorption type - uses part of the dried compressed air to purge the adsorbent after decompression to achieve "regeneration" of the adsorbent; Microthermal adsorption type - the difference from the non-thermal adsorption type is that the compressed air used for purging is heated by an electric heater.

Oil Injected compressor are widely used in various industries to provide compressed air power. CMN oil injected screw air compressor adopts patented shaft sealless design to ensure that the air end will never leak oil. The unique single-screw type air end achieves twelve times of compression in one rotation, with high efficiency. The ultra-high machining accuracy allows the air end to achieve good sealing and lubrication effects by spraying only a small amount of lubricating oil so the oil content can be less than 2ppm to meet most usage requirements. OIL INJECTED SCREW COMPRESSOR VS RECIPROCATING PISTON COMPRESSOR Piston air compressors use the piston to reciprocate in the cylinder to compress the air. They have high noise and vibration and many wearing parts. After the piston rings are worn, the air volume will decrease causing the decreased efficiency.

The characteristics determined by the partial pressure of water vapor in compressed air and the temperature of compressed air are used for cooling, dehydration and drying. While keeping the compressed air pressure basically unchanged, lowering the temperature of the compressed air can reduce the water content in the compressed air, and the excess water vapor will condense into liquid. The refrigerated dryer uses this principle to dry compressed air using refrigeration technology, so the refrigerated dryer has a refrigeration system. Refrigerated air dryer working Refrigerated air dryer how it works The refrigerated dryer sucks the low-pressure (low-temperature) refrigerant in the evaporator into the compressor cylinder. After the refrigerant vapor is compressed, the pressure and temperature increase at the same time; the high-pressure and high-temperature refrigerant vapor is pressed to the condenser. The higher temperature refrigerant steam exchanges heat with the lower temperature cooling water or air. The heat of the refrigerant is taken away by water or air and condensed, and the refrigerant vapor becomes a liquid.