2026-04-10Views：
Air compressors can be divided into many types according to their performance, use and principle, among which there are oil-free screw air compressors. Because many of them reflect the relatively high energy consumption of air compressors, how can oil-free screw air compressors reduce energy consumption?
First, reduce the energy loss in operation
the oil-free screw air compressor has a frequency converter in structure, so the pressure setting value of the air compressor can be a point instead of a larger range, that is, the lower pressure can be adjusted as needed. In the production equipment, the frequency converter can automatically adjust the speed of the air compressor according to the fluctuation trend of the pipe network pressure, thereby greatly eliminating the possibility of unnecessary energy loss.
Second, reduce the power loss caused by pressure rise
third, improve operational efficiency
generally speaking, the air compressor has a great chance of running for a long time under full load, so the design capacity of the limit motor that meets the needs of the air compressor will be too large. In fact, the proportion of light load operation is very high. If an oil-free screw air compressor is used, it can be continuously adjusted according to the load, and various parameters can be kept at stable values.
Firstly, the energy-saving principle of oil-free screw air compressor is expounded.
Most of the common energy-saving air compressors are permanent magnet variable frequency air compressors, which use permanent magnets instead of excitation windings for excitation. When a three-phase alternating current of frequency f is introduced into the three-phase stator windings of a permanent magnet motor, a rotating magnetic field will be generated at synchronous speed. In the steady state, the main pole magnetic field rotates synchronously with the rotating magnetic field, so the rotor speed is also a synchronous speed. The main pole magnetic field established by the stator rotating magnetic field and the permanent magnet always remains relatively static, and interact to generate electromagnetic torque, drive the motor to rotate and convert energy.
2. Oil-free screw air compressor can save electricity bill in any situation.
Take oil-free screw air compressor as an example. When fully loaded, the energy consumption of the permanent magnet motor of the air compressor is the smallest and the maximum air volume; when the load rate of the oil-free screw air compressor is less than 20%, the operating efficiency is always as high as 95%, achieving first-class energy efficiency. Compared with the power frequency screw air compressor, it can save more than 39.7% of energy. Compared with ordinary inverter air compressor, it saves 10%. Moreover, the air compressor adopts double frequency conversion centrifugal fan, which is more intelligent and energy-saving.
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The simplest point is to see whether it contains a frequency converter, and the second is to see whether the motor changes its speed according to the actual working conditions during operation. There are many factors to look. Speed directly affects the oil pressure and high and low pressure. I can see whether there is frequency conversion in current or not. Literally understood, the speed of the variable frequency air compressor is almost the same as the fixed frequency under the working state. When the air compressor is not in the pumping state, the motor frequency will automatically drop and the input power will be reduced to achieve the effect of energy saving.
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