The difference between variable frequency and industrial frequency of air screw compressors

In the field of industrial production, air screw compressors, as important air source equipment, provide stable compressed air for various pneumatic tools, automated production lines, etc. According to different driving modes, air screw compressors can be divided into two types: variable frequency and industrial frequency. They each have unique advantages and are suitable for different application scenarios. A deep understanding of the advantages of these two types of compressors will help companies make more reasonable equipment choices based on their own needs and maximize economic benefits and production efficiency.

The significant advantages of KAPA variable frequency air screw compressors

Excellent energy-saving performance

The biggest highlight of variable frequency air screw compressors is their excellent energy-saving effect. Traditional industrial frequency compressors operate at a fixed speed. When the actual gas consumption is less than the rated exhaust volume of the compressor, the excess compressed air will be discharged through the unloading valve, causing a lot of energy waste. The variable frequency compressor uses variable frequency speed regulation technology, which can adjust the motor speed in real time according to the actual gas consumption, thereby changing the exhaust volume of the compressor. When the gas consumption decreases, the motor speed decreases, and the power consumption of the compressor also decreases; when the gas consumption increases, the motor speed automatically increases to meet the gas demand. This intelligent adjustment method enables variable frequency compressors to achieve energy savings of 30% - 50% under partial load conditions, greatly reducing the operating costs of enterprises.

Precise pressure control

Variable frequency air screw compressors can achieve precise pressure control and maintain stable air supply pressure. In some production links that require high stability of compressed air pressure, such as precision instrument manufacturing and electronic chip production, stable pressure is essential. Variable frequency compressors can control the fluctuation range of air supply pressure within a very small range, generally up to ±0.01MPa, effectively avoiding product quality problems caused by pressure fluctuations, and improving product qualification rate and production efficiency.

Flexible start and operation

The variable frequency compressor adopts soft start mode, and the starting current is only 1.2 - 1.5 times the rated current. Compared with the 5 - 7 times rated current when the power frequency compressor is directly started, it greatly reduces the impact on the power grid and reduces the requirements for power supply equipment. At the same time, flexible start avoids the wear of mechanical parts caused by instantaneous high current and high torque, and prolongs the service life of the compressor. During operation, the smooth adjustment of the speed of the variable frequency compressor also makes the equipment run more smoothly, reduces the operating noise, and improves the working environment.

High intelligence and adaptability

Modern variable frequency air screw compressors are usually equipped with advanced control systems with functions such as remote monitoring, fault diagnosis, and automatic adjustment. Users can view the operating status, energy consumption data and other information of the compressor in real time through mobile phones, computers and other terminals, and perform remote control. In addition, the variable frequency compressor can quickly respond to changes in working conditions and adapt to different gas demand. Whether in continuous operation or frequent start-stop working mode, it can maintain efficient and stable operation.

Unique advantages of industrial frequency air screw compressors

Simple structure and high reliability

The structure of KAPA industrial frequency air screw compressor is relatively simple, mainly composed of basic components such as motor, screw rotor, oil and gas separation system, without complex variable frequency speed regulation device and control system. This simple structural design makes the equipment have a low failure rate and high operating reliability. In some occasions where the equipment stability requirements are high, the working conditions are relatively stable, and the gas demand does not change much, such as small processing plants, mine ventilation, etc., the power frequency compressor can operate stably for a long time, reducing the downtime caused by equipment failure and ensuring the continuity of production.

Low initial investment cost

Due to the simple structure and relatively few parts of the power frequency air screw compressor, its purchase cost and installation cost are lower than those of the variable frequency compressor. For some small enterprises or short-term projects with limited budgets and low energy-saving requirements, the power frequency compressor is an economical choice. In addition, the maintenance of the power frequency compressor is relatively simple and the maintenance cost is low, which further reduces the overall cost investment of the enterprise.

Suitable for stable working conditions

When the working conditions are stable and the gas demand fluctuates little, the power frequency air screw compressor can give full play to its advantages. When the gas consumption is basically matched with the rated exhaust volume of the compressor, the power frequency compressor can continue to operate efficiently at the rated speed, output stable compressed air, and meet the production needs. Moreover, for some production links that do not require high pressure stability, such as the use of ordinary pneumatic tools and material transportation, the performance of the power frequency compressor can fully meet the requirements.

Mature technology, easy maintenance

After a long period of development, the technology of industrial frequency air screw compressors has become very mature, and there are a large number of professional maintenance personnel and parts suppliers on the market. Once the equipment fails, the company can quickly find maintenance personnel for maintenance, and the procurement of accessories is relatively easy, with a short maintenance cycle, and the equipment can be quickly restored to operation, reducing the impact on production.

Variable frequency and industrial frequency air screw compressors have their own advantages. Variable frequency compressors perform well in energy saving, pressure control, and intelligence, and are suitable for occasions with large fluctuations in gas demand and high requirements for pressure stability and energy saving; while industrial frequency compressors are more suitable for application scenarios with stable working conditions and limited budgets due to their simple structure, low cost, and high reliability. When choosing an air screw compressor, an enterprise should comprehensively consider its own production needs, operating costs, budget and other factors, weigh the advantages of both, and make the most suitable decision.

Advantages of LRSD Brand

1. High quality control(ISO 9001-2000/ISO14001/ASME/Energy saving certificate)

2. Fast Delivery( 10-15 days for large orders)

3. Good service for pre-sale,after-sale( strong technical support and professional after-sales team)

4. Small order acceptable( Ordering quantity according to your actual needs)

Why Choose Us?

Longer service life of the master machine

The rotor uses asymmetrical line running at a low speed with the support of the ball bearings and roller bearings as a result. The damage and the cost are lowered and the service life is extended. Some force is counteracted by the axial force generated by the bevel gear. So the load on the bearings of the master machine is lowered.

Permanent alignment of the electromotor and the master machine

Different from the strap compressor, the SRC series compressor can integrate the electromotor with flange, shaft coupling box-gear box. and the master machine into one in such way the master machine and the electrometer are aligned forever in the transpiration. The SRC series compressors equipped with effective and fully sealed air-cooling electromotor.