High speed brushless DC permanent magnet motor for vacuum cleaner

Abstract

The invention discloses a vacuum cleaner high-speed brushless DC permanent magnet motor comprising a shafting assembly, a stator assembly, and a drive controller. The shafting assembly comprises a rotating shaft, bearings, blades, and a magnet. The stator assembly comprises a stator, armature windings, a guide bar, and a motor base connected with the guide bar. The rotating shaft is connected with the motor base through the bearings. The magnet is installed at one side, near the stator, of the rotating shaft, and the blades are installed at the other side. The stator is formed by splicing armature tooth blocks, and is provided with stator slots and positioning holes. The stator slot of each armature tooth winds the corresponding armature winding. The stator is connected through the positioning holes with the guide bar for and is thus fixed. The stator is formed by splicing and combining more than three armature teeth. The motor base is provided with a center hole which is internally equipped with a bearing chamber in which the bearings are arranged. The motor base is connected with the rotating shaft through the bearings.

Description

technical field [0001] The invention relates to the technical field of permanent magnet direct current motors, in particular to a brushless direct current permanent magnet motor in the field of household appliances. Background technique [0002] Brushless DC permanent magnet motors are widely used because of their compact structure, long life, high efficiency, stable operation and various structural forms. With the continuous improvement of people's living standards and the needs of energy conservation and environmental protection, brushless DC permanent magnet motors The market demand for household appliances as a power source is increasing, especially high-quality household appliances represented by vacuum cleaners are being favored by more and more consumers. [0003] Therefore, it has become a top priority to provide high-quality power sources for household vacuum cleaners. At present, the permanent magnet motors of vacuum cleaners still have the following deficiencies: ...

AI Technical Summary

Problems solved by technology

[0003] Therefore, it has become a top priority to provide high-quality power sources for household vacuum cleaners. At present, the permanent magnet motors of vacuum cleaners still have the following deficiencies: (1) Some permanent magnet motors of vacuum cleaners still use a brush structure, which limits the speed and life of the motor, thereby affecting The suction effect and durability of the vacuum cleaner; (2) The brushless DC permanent magnet motor vacuum cleaner with multi-slot and multi-pole structure not only has higher requirements for motor processing and manufacturing, but also requires a high electronic commutation frequency, which makes the motor body structure and drive The cost of the controller increases; (3) The speed of the permanent magnet motor cannot reach a high level, which makes the dust collection effect of the vacuum cleaner poor; (4) The vibration and noise of the permanent magnet motor are too large, which reduces the satisfaction of consumers using the vacuum cleaner Spend

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