Rotor and motor

A rotor and rotor unit technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of low motor production efficiency, difficult quality control, high production costs, etc., to achieve high production efficiency, reduce production costs, and low production costs Effect

Inactive Publication Date: 2017-05-31
EMB PAPST VENTILATOR SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above problems can be solved by using stator chute, it will bring many new problems such as complicated process, low motor production efficiency, difficult quality control and high production cost.

Method used

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  • Rotor and motor
  • Rotor and motor
  • Rotor and motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This preferred embodiment provides a motor and its rotor, the motor is mainly but not limited to a permanent magnet synchronous motor.

[0035] see image 3 and Figure 4 The motor provided in this embodiment includes a rotor 1 and a stator 2 sleeved outside the rotor 1. The stator 2 includes a stator core 21 and a plurality of tooth shoulders 22 uniformly arranged inside the stator core 21. Adjacent tooth shoulders 22 A stator slot is formed between the stator core 21 , the tooth shoulder 22 is roughly T-shaped, and the axis of the stator core 21 is collinear with the centerline of the rotor 1 .

[0036] The outer contour of the rotor 1 includes a plurality of rotor units that are symmetrically distributed around the center and connected in sequence along the circumference. The first plane 12 on both sides of the arc surface 11, one end of the first arc surface 11 away from the first plane 12 corresponding to it (corresponding to it refers to being in the same rotor ...

Embodiment 2

[0050] This preferred embodiment provides a motor and its rotor. The structure of the motor and the rotor is basically the same as that of the preferred embodiment 1, the difference lies in:

[0051] The structure of the rotor is different. Specifically, all the first arc surfaces are non-concentric arcs, and the centers corresponding to all the first arc surfaces are located on the same circle, and the axis of the circle is collinear with the center line of the rotor, so as to further improve the air gap The sinusoidal nature of the magnetic field.

Embodiment 3

[0053] This preferred embodiment provides a motor and its rotor. The structure of the motor and the rotor is basically the same as that of the preferred implementation 1 or 2, the difference lies in:

[0054] The structure of the stator tooth shoulder is different. Specifically, the end of the tooth shoulder away from the stator core forms a second arc surface, and the second arc surface is set to protrude toward the stator core. All the second arc surfaces are non-concentric arcs, and all the second arc surfaces The centers of the surfaces are all located on the same circle, and the axis of the circle is collinear with the axis of the stator core.

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Abstract

The invention discloses a rotor and a motor, belongs to the technical field of motors and is designed to solve the problems that an air gap magnetic density waveform of an existing motor is non-sinusoidal, motor machining is difficult and the like. An outline of the rotor comprises multiple rotor units which are distributed in a central symmetry manner and connected sequentially, wherein each rotor unit comprises a first cambered surface located in the middle and bulging towards the outer side of the rotor and first planes symmetrically arranged on two sides of the first cambered surface, one end, far away from the first cambered surface corresponding to the first plane, of each first plane is inclined in the inner side direction of the rotor, so that an unequal air gap is formed between an outer wall of the rotor and an inner wall of the stator matched with the rotor for use. The motor comprises the rotor and the stator nested outside the rotor, the stator comprises a stator iron core and multiple shoulder teeth uniformly arranged on the inner side of the stator iron core, and the axis of the stator iron core is collinear with the central line of the rotor. According to the rotor and the motor, the sinusoidal property of an air gap magnetic field of the motor can be improved, machining is convenient, the production efficiency is high, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor and a motor including the rotor. Background technique [0002] Such as figure 1 As shown, in the design of the general motor structure, the inner diameter of the stator and the outer diameter of the rotor mostly adopt the design of equal circles. This is not only convenient for processing, but also can save the dimensional inspection link and the control of the processing size in the process, and the production efficiency of the motor is high. [0003] However, in some special applications of motors (such as occasions requiring low-speed vibration and noise), it is required that the torque ripple of the motor is small under low-speed conditions. However, the traditional circular design of the inner diameter of the stator and the outer diameter of the rotor cannot meet these requirements well, and has defects such as non-sinusoidal air gap flux density waveform, high harm...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02K1/27
CPCH02K1/274H02K1/276H02K2201/03H02K2201/06
Inventor刘井龙邵建清裴中坤聂永峰
OwnerEMB PAPST VENTILATOR SHANGHAI