What is the two-stage compression permanent magnet frequency conversion

What is the two-stage compression permanent magnet frequency conversion

Domestic sales of energy-saving air compressors are in full swing. Permanent magnet variable frequency air compressors and two-stage compression permanent magnet variable frequency air compressors are representative of energy-saving air compressors and are currently the mainstream products on the scene.

　　 Two-stage compression permanent magnet variable frequency air compressor, using permanent magnet synchronous motor, no excitation current, high motor efficiency, no reactive power loss. The speed of two-stage compression is higher. After frequency conversion speed regulation, the air supply pressure range is wide and stable. The most obvious advantage is energy saving and large gas production. The air intake can be adjusted in real time according to the change of air consumption to ensure the air compressor Run with z* high efficiency.

　　What is two-stage compression? That is to say, the first-stage compression rotor and the second-stage compression rotor are combined in a casing, and they are directly driven through helical gears. Natural air enters the first stage of compression through the air filter, and is mixed with a small amount of lubricating oil in the compression chamber, while compressing the mixed gas to the interstage pressure.

　　The compressed gas enters the cooling channel and comes into contact with a large amount of oil mist, thereby greatly reducing the temperature. After cooling, the compressed gas enters the second stage rotor, undergoes secondary compression, and is compressed to the final exhaust pressure. Finally, the compressor is discharged to complete the entire compression process.

　　 To put it simply, it means to compress the air twice. The compressed gas compressed by the first-stage cylinder enters the second-stage cylinder for recompression after cooling.

　　 The density of compressed gas has been greatly changed after two stages, so that the displacement and air pressure can be increased, so that the overall compression efficiency is greatly improved. In the case of the same displacement, the power of the two-stage compression is lower than the one-stage compression, which is more energy-efficient.