The variable frequency air compressor uses a pressure sensor to instantly sense the actual air pressure and gas consumption in the system. Through the precise coordination of electrical control and frequency conversion control, the motor speed (that is, output power) is immediately controlled without changing the torque of the air compressor motor (that is, the ability to drag the load), and the compressor speed is changed to respond to changes in system pressure and maintain a stable system pressure (set value) to achieve the on-demand output of high-quality compressed air. When the system air consumption is reduced, the compressed air provided by the compressor is greater than the system consumption, and the frequency conversion compressor reduces the speed and reduces the output compressed air air volume. On the contrary, the motor speed is increased to increase the compressed air volume to maintain a stable system pressure value. It is the same as the power saving of the fan motor pump, and the input voltage frequency is controlled according to the load change, which is the same as the inverter principle.
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1, the pressure setting of variable frequency air compressor can be one point, that is, the minimum pressure to meet the requirements of the production equipment can be used as the set pressure, the variable frequency air compressor will adjust the speed of the air compressor according to the trend of the fluctuation of the pipe network pressure, and even eliminate the unloading operation of the air compressor, saving electric energy.
2, because the variable frequency air compressor makes the upper and lower pressure of the pipe network stable, it can reduce or even eliminate the fluctuation of pressure, so that all the air compressors running in the system operate under a lower pressure that meets the production requirements, reducing the power loss caused by the upward fluctuation of pressure.
3, because the air compressor can not rule out the possibility of running for a long time under full load, so the capacity of the motor can only be determined according to the maximum demand, so the design capacity is generally large. In actual operation, the proportion of light load travel time is very high. Therefore, the use of variable frequency speed regulation can greatly improve the working efficiency during operation. Therefore, the potential for energy saving is great.
4, some adjustment methods (such as adjusting the opening of the valve and changing the Angle of the blade, etc.), even in the case of small demand, can not reduce the operating power of the motor. After adopting variable frequency speed regulation, when the demand is small, the speed of the motor can be reduced, and the running power of the motor can be reduced, so as to further achieve energy saving.
5, the single motor drive system can not be adjusted continuously according to the weight of the load. After the use of frequency conversion speed regulation, it can be very convenient for continuous adjustment, and can maintain the temperature of pressure, flow, temperature and other parameters, thus greatly improving the working performance of the air compressor.
Air compressor energy saving
In general, when designing the installed capacity of air compressors, they are considered according to the maximum production conditions in the factory, and under normal circumstances, due to various reasons, only 60%-80% of the production capacity can be used. This factor is one of the energy-saving air compressors;
Loading and unloading of air compressor is an important performance of the operating conditions of air compressor, loading time and unloading time are important parameters of air compressor operation, loading process is the case of large load demand, then monitor the motor operating data and record, unloading process is the case of small load demand, then monitor the motor operating data and record. It can be seen from the data comparison that loading and unloading have different electric energy consumption, and loading and unloading are caused by the fluctuation of outlet gas supply pressure. Adjust the motor speed to cancel the loading and unloading process and achieve the purpose of constant pressure gas supply. If the loading rate of an air compressor reaches or exceeds 80%, then its energy saving space is very small and there is no need for improvement. This factor is also one of the energy saving transformation space.
Loading and unloading of air compressor is an important performance of the operating conditions of air compressor, loading time and unloading time are important parameters of air compressor operation, loading process is the case of large load demand, then monitor the motor operating data and record, unloading process is the case of small load demand, then monitor the motor operating data and record. It can be seen from the data comparison that loading and unloading have different electric energy consumption, and loading and unloading are caused by the fluctuation of outlet gas supply pressure. Adjust the motor speed to cancel the loading and unloading process and achieve the purpose of constant pressure gas supply. If the loading rate of an air compressor reaches or exceeds 80%, then its energy saving space is very small and there is no need for improvement. This factor is also one of the energy saving transformation space.
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