Why can't oil-free screw air compressor do small air volume

Oil-free screw air compressor can not do small gas mainly for the following reasons:

working principle limitation: The working principle of the oil-free screw air compressor is to use the change of the gas volume caused by the movement of the internal rotor of the head to form air compression. This type of compression requires a certain amount of gas to maintain the effective operation of the rotor and the compression efficiency. When the amount of gas is too small, the movement of the rotor may not effectively compress the gas, thereby affecting the performance and efficiency of the compressor.

Equipment design: the design of oil-free screw air compressor is usually aimed at the larger gas demand. Its core components, such as the two-stage compression host and precision gears, are designed and manufactured based on a large gas processing capacity. In the case of a small amount of gas, these components may not function adequately, and may even run erratic or malfunction.

Energy efficiency considerations: oil-free screw air compressor in small gas operation, may lead to a decline in energy efficiency. Because the equipment needs to maintain a certain operating speed and pressure to achieve the expected compression effect, when the amount of gas processed is reduced, the energy efficiency ratio of the equipment may be reduced, resulting in a waste of energy.

Maintenance and service life: Long-term operation of oil-free screw air compressor under small air volume may affect the service life of the equipment. Because the design and operation of the equipment are based on a certain amount of gas treatment, long-term deviation from this design point may lead to accelerated wear or performance degradation of the equipment.

In summary, due to the working principle of the oil-free screw air compressor, equipment design, energy efficiency considerations, and maintenance and service life limitations, it is not suitable for small gas compression requirements. In practical applications, the appropriate compressor type should be selected according to the specific gas demand.