2026-04-10Views：
When Xiao Chen purchased the screw air compressor for the company, he hesitated between "power frequency air compressor" and "frequency conversion air compressor" because Xiao Chen did not know the difference between the two.
According to Xiao Chen's description, Xiao Shen of Shanghai granklin group recommended "power frequency air compressor" to Xiao Chen. why not recommend "permanent magnet frequency air compressor" and mainly push "power frequency air compressor?
Xiao Chen's company uses a large amount of gas and needs several air compressors to be used together. The purchase cost of all "permanent magnet variable frequency air compressors" is relatively high, which does not meet the budget of Xiao Chen's company. Not every enterprise can do without budget. Therefore, we need to use the plan according to the actual situation.
Finally, we recommend using two "power frequency air compressors" and one "permanent magnet frequency conversion air compressor" according to the gas consumption. This matching method can save the purchasing cost for Xiao Chen's enterprise as much as possible.
we first need to understand the permanent magnet variable frequency air compressor and power frequency air compressor is different to know how to choose:
1. pressure stability:
1, due to the frequency conversion of the screw air compressor using the frequency converter of the characteristics of the stepless speed regulation, through the controller or inverter internal PID regulator, can start smoothly; on the occasion of large fluctuations in gas consumption, and can quickly adjust the response;
2. Compared with the upper and lower limit switch control of power frequency operation, the stability of air pressure is improved exponentially.
2. start without impact:
1. As the frequency converter itself contains the function of soft starter, the starting current is larger within 1.2 times of the rated current, and 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.
3. variable flow control:
1. The air compressor driven by power frequency can only work in one exhaust volume, and the variable frequency air compressor can work in a relatively wide range of exhaust volume. The frequency converter is based on the actual gas consumption to adjust the motor speed in real time to control the displacement.
When the air consumption is low, the air compressor can also be automatically dormant, thus greatly reducing the loss of energy.
The optimized control strategy can further improve the energy saving effect.
4. AC power supply voltage adaptability is better:
1. Due to the over-modulation technology adopted by the frequency converter, 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;
2. For self-generating occasions, variable frequency drive can show its advantages;
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.
Low 5. noise:
1. Most of the working conditions of the frequency conversion system are lower than the rated speed, and the mechanical noise and wear of the host are reduced, which prolongs the maintenance and service life;
2. If the fan also adopts variable frequency drive, the noise of the air compressor can be significantly reduced.
The oil-free and water-lubricated single-screw compressors produced by Shanghai Granklin Group have unparalleled advantages in terms of gas quality, energy saving, easy maintenance and reliability, and are widely used in food and beverage, medicine and medical care, and precision manufacturing., Instrumentation, fuel cells, microelectronics, biology and other industries with extremely high gas demand.
View detailsBasically, according to each air compressor factory has a standard for its own air compressor, it is best to look at the instructions! Some manufacturers also have 2000 hours of oil and 4000 hours of oil. Some are calculated from the sale to the customer, the initial insurance time and the later period.
Energy conservation and environmental protection is always advocated by our country, and the R & D teams of manufacturing enterprises are also trying to develop energy-saving equipment. The screw air compressor, as one of the important gas equipment for production enterprises, will inevitably cause environmental pollution in the process of use.
The water lubricated air compressor produced by granklin group does not contain oil. it only needs to replace the air filter element and water filter element regularly according to the manufacturer's requirements and maintain the head of the water lubricated air compressor. Oil and no oil in the air compressor generally refers to the amount of oil content in the gas discharged from the exhaust port of the air compressor. Generally, the oil content of the oil machine is relatively large, and the oil content of the oil-free oil machine is 0.01ppm. Therefore, the oil content is used to distinguish the oil and no oil in the air compressor.
View detailsBefore, I saw a piston machine with a price of 200 pieces on a B2B platform. When I saw this price tag, I didn't dare to believe it. Because even a small piston machine cannot be bought for 200 yuan. As we all know, the main cost of air compressor is from the host.
Features of water-lubricated oil-free screw air compressor: completely oil-free air quality water replaces oil, realizing the four major effects of lubrication, cooling, sealing and noise reduction, providing high-quality 100 oil-free air without pollution, discharging water without special treatment, and meeting environmental protection requirements.
The water lubricated air compressor produced by Shanghai granklin group belongs to screw type in the air compressor category. Screw type air compressor is divided into twin screw and single screw. The water lubricated air compressor uses single screw compression. Under the condition of the same power consumption, the single screw gas production is more sufficient. Air compressors are classified according to the principle. Air compressors can be divided into two categories: rate type and capacity type. The gas machine is divided into: rate type; Capacity type; Capacity type is divided into tube type and reciprocating type; Tube type: rotor type; Screw type; Slide built-in type.
View detailsIn the field of food production, compressed air is the key power source and process medium, and its quality is directly related to food safety and product quality. In order to ensure that compressed air meets the high standards of the food industry, it is necessary to control the cleanliness, oil-free, microbial and other dimensions.
The water-lubricated air compressor produced by Shanghai Granklin Group is a screw-type air compressor, which is very consistent with the characteristics of stable gas supply and oil-free gas. In terms of energy saving, we can also choose water-lubricated permanent magnet variable frequency air compressor, which fully meets the needs of both oil-free and environmental protection and energy saving.
View detailsThe solution to the water in the air of the air compressor is as follows: 1. There is a drain valve at the bottom of the air compressor cooler. As long as the drain valve is opened immediately, the water inside can be drained clean. 2. You can also install a drain valve at the lowest end of the air compressor storage tank, or
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