How to realize the energy saving of air magnetic levitation blower?

The energy saving of air magnetic levitation blower is mainly realized by three core technologies: eliminating mechanical loss, optimizing motor efficiency and accurately matching load, which reduces energy consumption from the source to the end of energy transfer.

1. Core Technology 1: Magnetic Bearing-Eliminating Mechanical Friction Loss

This is the basis of energy saving, which directly solves the biggest energy consumption pain point of traditional blowers.

Traditional blowers (such as Roots and multi-stage centrifugal blowers) use rolling or sliding bearings. When running, there is physical friction between the bearing and the shaft sleeve, which will consume 10%-15% of the input energy, and the lubricating oil needs to be changed regularly, which will also generate additional maintenance costs.

The air magnetic suspension blower suspends the rotor in the air by electromagnetic force, and there is no mechanical contact between the rotor and the stator, and the friction loss approaches zero. This alone can reduce the energy consumption by more than 10% compared with the traditional equipment.

Second, the core technology 2: high-speed permanent magnet synchronous motor-improve energy conversion efficiency

Motor is the core of energy input, and its efficiency directly determines the overall energy consumption level.

Traditional blowers mostly use asynchronous motors, which have low rotational speed (usually ≤3000rpm), and need to increase the speed through the gear box to meet the fan demand, while gear transmission will produce 5%-8% energy loss, and the energy conversion efficiency of asynchronous motors is only 75%-85%.

The air magnetic suspension blower adopts high-speed permanent magnet synchronous motor, which can directly drive the impeller to rotate at high speed (the speed can reach 20000-40000rpm) without gear box, thus avoiding the loss of gear transmission; At the same time, the energy conversion efficiency of permanent magnet synchronous motor is over 95%, which further reduces the waste of electric energy.

Third, the core technology 3: intelligent frequency conversion and load matching-avoid "big horse-drawn car"

In actual operation, the energy consumption waste caused by load fluctuation is often neglected, and this design accurately solves this problem.

Traditional blowers mostly run at constant speed. When the air volume needs to be adjusted in waste gas treatment and other scenes, it can only be controlled by valve throttling. At this time, the blower still runs at full load, and a lot of energy is wasted on valve throttling, and the energy consumption loss can reach 20%-30%.

The air magnetic suspension blower with vector frequency conversion control system can adjust the motor speed in real time according to the actual load demand (such as air volume and pressure change), and realize the stepless adjustment of 30%-100% air volume. Under low load condition, the motor speed decreases synchronously, and the energy consumption decreases with the cubic of the speed, thus minimizing the invalid energy consumption.