Magnetic bearing motor and its magnetic bearing assembly

Abstract

A motor comprising a stator (136), a rotor (142), and a plurality of blades (154). The stator comprises a stator base (102) with an opening, a first magnetic structure (134) disposed at a bottom of the opening, a magnetic pole disposed on the stator base, and a second magnetic structure (138) disposed at a top of the magnetic pole. The rotor, coupled to the stator, comprises a hub (128), a shaft (144), a third magnetic structure (150) disposed at the hub and encircled one en of the shaft and corresponded to the first magnetic structure, and a fourth magnetic structure (140) disposed at the hub without contacting the second magnetic structure. The blades encircle the rotor. The first and third magnetic structures attract the second and the fourth magnetic structures, respectively.

Description

technical field [0001] The present invention relates to a magnetic-bearing motor, fan and bearing assembly thereof, in particular to a magnetic-bearing motor, fan and bearing assembly having the characteristics of low wear, low noise, low cost, and long life . Background technique [0002] In today's motors, in order to make it run smoothly, the shaft center of the rotor is usually covered by a bearing, so that the rotor can run smoothly with the support of the bearing. [0003] The existing bearings are Palin bearings, oil bearings (sleeve bearings), dynamic pressure bearings, ceramic bearings, etc. However, each of the aforementioned bearings has its own advantages and disadvantages. [0004] Palin bearings are also called ball bearings. The structure of this type of bearing is quite fragile, so it cannot withstand the impact of external force, and it will generate a lot of noise at high speed. Furthermore, due to the high precision requirement of the components, the pri...

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Problems solved by technology

However, due to the incorrect force arm and adsorption angle of the auxiliary magnet, the auxiliary magnet will be attracted together during operation and cannot operate smoothly.

[0010] Therefore, when the magnetic levitation motor mentioned in the above-mentioned patent is running, the shaft center is likely to collide with the bearing, which increases its noise, shortens its life, and even prevents it from running smoothly.

And because of its magnetic balance, problems such as inability to start smoothly occur.

Therefore, the magnetic bearing is still in the experimental stage and cannot smoothly enter the mass production stage (practical stage)

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