Air floating blowers and magnetic levitation blowers are both general-purpose devices and belong to the category of single-stage high-speed centrifugal blowers. Compared to other types of blowers, these two types have significant energy-saving effects, and they are more convenient to operate during installation and maintenance. Today, Magrui Magnetic Levitation Technology will popularize the main differences between magnetic levitation blowers and air floating blowers.

Comparison of performance parameters of the two types of blowers

1. Core components - Different bearings used

The main structure of magnetic levitation blowers and air floating blowers is quite similar, but the bearings they use are different; one uses magnetic levitation bearings, while the other uses air floating bearings, which have significant differences.

Magnetic levitation bearings achieve a suspended state through electromagnetic action and then rotate, truly realizing frictionless startup. In contrast, the bearing suspension principle of air floating blowers is that air, under the high-speed rotation of the blower rotor, generates a dynamic pressure effect between the rotor and the foil bearing surface, forming a high-pressure air film that lifts the bearing. During the suspension process, there is a low-speed dry friction process.

2. Price aspect

In the case of the same motor power, the price of magnetic levitation blowers is higher than that of air floating blowers, mainly because the structural performance of magnetic levitation blowers is more advanced, with higher technological content, lower losses during equipment startup, and longer lifespan.

3. Differences in lifespan

Air floating blowers use external dynamic pressure air, which can lead to dry friction issues with the main shaft at lower speeds. Additionally, during startup and pause, friction bearings are required, making frequent starts and stops impractical. In contrast, magnetic levitation bearings support loads through magnetic levitation, allowing the rotating shaft to float and move relatively. A series of precise control systems and sensors avoid friction or wear of the main shaft. Therefore, there is a significant difference in the lifespan of the bearings; generally, the lifespan of air floating bearings is about 5-10 years, while magnetic levitation bearings can last over 20 years.

4. Energy-saving effects

Since magnetic levitation blowers do not have mechanical friction, and both types have certain overlapping parameters in some aspects, overall, magnetic levitation blowers have better energy-saving effects than air floating blowers. According to actual application data, the overall efficiency of magnetic levitation blowers is 80%, while air floating blowers are around 75%. Calculations show that under the same working conditions, a 75KW Magrui magnetic levitation blower operating throughout the year can save about 32,000 kWh compared to an air floating blower.