2026-04-09Views：
In the air compressor market, the comparison between power frequency and variable frequency screw air compressor has not stopped, so which is better, power frequency or variable frequency screw air compressor?
The main difference between power frequency and variable frequency screw air compressor is that the variable frequency air compressor joins the frequency converter, and the frequency converter is used to control the actual input power to achieve the purpose of energy saving and power saving.
1. start without impact:
the inverter itself contains the function of a soft starter. The maximum starting current is within 1.2 times of the rated current, while the power frequency starting is generally more than 6 times of the rated current, and the starting impact is very small. This impact is not only on the power grid, but also on the entire mechanical system.
Low 2. noise:
most of the working conditions of the frequency conversion system are lower than the rated speed, the main machine mechanical noise and wear are reduced, and the maintenance and service life are extended;
3. pressure stability:
the variable frequency screw air compressor uses the stepless speed regulation characteristics of the frequency converter, and can start smoothly through the controller or the PID regulator inside the frequency converter. For occasions with large fluctuations in gas consumption, it can quickly adjust the response;
4. AC power supply voltage adaptability is better:
1. For self-generating occasions, variable frequency drive can show its advantages;
2. Due to the over-modulation technology adopted by the inverter, sufficient torque can still be output when the AC power supply voltage is slightly lower to drive the motor to work; when the voltage is slightly higher, it will not cause the voltage output to the motor to be on the high side;
3. According to the characteristics of the motor VF (the variable frequency air compressor works below the rated voltage in the energy-saving state), the effect is obvious for the field with low grid voltage.
5. variable flow control:
the frequency converter is based on the actual gas consumption to adjust the motor speed in real time to control the displacement. Therefore, the variable frequency air compressor can work in a relatively wide range of exhaust volume.
Permanent magnet frequency conversion technology is a high-efficiency energy-saving technology applied in Granklin air compressor, and its core is to realize the precise use of energy through intelligent adjustment. "Permanent magnet" means a motor that uses permanent magnets to generate a magnetic field that does not require additional electrical energy to maintain the magnetism
The material selection of the water lubricated oil-free air compressor is to ensure oil-free compression, corrosion resistance and efficient operation as the core. The specific material applications are as follows: 1. Core compression parts screw and star wheel: 304/316 grade stainless steel or special alloy materials are used. This
The main difference between oil-free air compressors and oil-free air compressors is reflected in their working principle, use environment and maintenance requirements. The following is a detailed comparison between the two: Working principle: Oil-free air compressor: This type of air compressor does not need to be used when running
Fixed air compressor is a kind of general mechanical equipment, which is widely used in industry, construction, automobile and other fields. It is a device that converts the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy, and is a pressure generating device for compressed air. According
The pressure of compressed air, but a little "elastic" topic! Generally speaking, its pressure depends on what we want to do with it. Imagine if we just need to gently blow away the dust on the desktop, then the pressure is not
The screw machine can be oil-free. For example, oil-free screw air compressor is the use of oil-free lubrication technology, not in the compressed air to the air oil. This type of oil-free screw machine is particularly suitable for applications that require high compressed air quality, such as food and pharmaceutical industries
Compressed air system equipment start-up sequence of technical specifications as the core power source of industrial production, the equipment start-up sequence directly affects the system operation stability and energy efficiency performance. Now on the cold dryer, air compressor, suction dryer standard start-up
The displacement on the nameplate of the air compressor (usually marked as "volume flow" or "displacement") is the core parameter reflecting the performance of the air compressor. Its definition, unit and importance are as follows: 1. Definition Displacement refers to the specific import state (standard work
There are significant differences between frequency conversion screw air compressor and power frequency driven air compressor in terms of operation mode, energy efficiency performance, pressure stability, starting characteristics, noise level, maintenance cost and applicable scenarios, etc., as follows: 1. operation mode frequency conversion screw air compressor: through
Oil-free and water-lubricated permanent magnet frequency conversion screw compressor is an efficient and environmentally friendly compressed air equipment. Its main uses and application advantages can be summarized as follows: 1. main uses provide pure oil-free compressed air: due to the use of water as a lubricant, Completely eliminated
2018 Granklin Group. All rights reserved 沪ICP备18000439号-2
