The cleaning ability of a vacuum cleaner depends heavily on the performance of its 'heart' - the motor. Although traditional carbon brush motors have advantages in cost, they have inherent disadvantages such as low efficiency, high noise, easy wear and tear to produce sparks and carbon powder, and relatively short life, which limit the overall performance of the vacuum cleaner and the upgrade of user experience.
The brushless DC motor, with its electronic commutation replacing physical carbon brushes, has shown significant advantages:
1. Higher speed and stronger suction: Brushless motors can easily achieve a speed of 100,000 rpm or even higher, far exceeding the 30,000-50,000 rpm level of common carbon brush motors on the market. Higher speed directly translates into stronger vacuum suction, especially for deep carpet dust and gap debris.
2. Higher efficiency and longer battery life: Mechanical friction loss is reduced, and the energy conversion efficiency of brushless motors is greatly improved. This means that under the same battery capacity, vacuum cleaners equipped with brushless motors can achieve longer continuous working time, solving one of the core pain points of cordless vacuum cleaners.
3. Lower noise and vibration: The noise source of carbon brush friction is eliminated, the motor runs more smoothly, significantly reducing the noise and vibration of the whole machine, and improving the comfort of use.
4. Longer life and reliability: Without fragile carbon brushes, the motor life can be extended exponentially, and the operation is more stable and reliable, reducing the subsequent maintenance cost and failure rate.
5. More intelligent control: Brushless motors are easier to achieve precise speed control and status feedback, laying the foundation for the intelligent speed regulation, automatic suction adjustment, dust fullness sensing and other functions of the vacuum cleaner.
