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A kind of disc type permanent magnet motor and its magnetic steel

A technology of permanent magnet motors and magnets, which is applied in the directions of magnetic circuit rotating parts, magnetic circuit shape/style/structure, stator/rotor body manufacturing, etc., which can solve the waste of magnetic steel materials, high cost, and unsuitable promotion, etc. problems, to achieve the effect of saving materials, reducing material costs, and reducing processing difficulty

Active Publication Date: 2017-10-03
浙江西子富沃德电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of magnetic steel has a complex structure, and the forming rate is only about 30%, which greatly wastes the magnetic steel material, and the cost remains high, so it is not suitable for promotion

Method used

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  • A kind of disc type permanent magnet motor and its magnetic steel
  • A kind of disc type permanent magnet motor and its magnetic steel
  • A kind of disc type permanent magnet motor and its magnetic steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, in this embodiment, the magnetic steel used for the disc permanent magnet motor is in the shape of a fan ring as a whole, the angle between the two straight sides of the fan ring is α, the inner arc and the outer arc are the same circle center, but the radii are different The two arcs are long, and the central angles subtended by the inner and outer arcs are equal.

[0033] The fan ring includes a central area 2 along the circumference, and tapered areas 1 located on both sides of the central area 2 and whose thickness gradually decreases. The central area 2 is symmetrical about the radial centerline 3 of the fan ring, and the two tapered areas 1 are symmetrically distributed in Both sides of the central zone 2.

[0034] The thickness of the central zone 2 is h, and the two straight sides of the fan ring are the places where the thickness of the corresponding tapering zone 1 is the smallest, and the thickness at this place is k, where 0.2h

Embodiment 2

[0039] Such as figure 2 As shown, in this embodiment, the magnetic steel used for the disc permanent magnet motor is in the shape of a fan ring as a whole, the angle between the two straight sides of the fan ring is α, the inner arc and the outer arc are the same circle center, but the radii are different The two arcs are long, and the central angles subtended by the inner and outer arcs are equal.

[0040] The fan ring includes a central area 2 along the circumference, and tapered areas 1 located on both sides of the central area 2 and whose thickness gradually decreases. The central area 2 is symmetrical about the radial centerline 3 of the fan ring, and the two tapered areas 1 are symmetrically distributed in Both sides of the central zone 2.

[0041] The tapering zone 1 is surrounded by an outer arc, an inner arc, and a first straight side and a second straight side parallel to each other, wherein the first straight side is a fan-shaped straight side, and the second stra...

Embodiment 3

[0048] The disc type permanent magnet motor provided in this embodiment includes a machine base, and a stator and a rotor that cooperate with each other using an axial magnetic field are arranged in the machine base. The rotor includes a rotor yoke and a magnetic steel arranged on the rotor yoke. The magnetic steel implements Example 2 The magnetic steel obtained.

[0049]The magnets are arranged towards the stator. A support is provided on one axial side of the machine base, and the two ends of the rotating shaft of the rotor are respectively installed on the machine base and the support through bearings.

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PUM

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Abstract

The invention discloses a disc-type permanent magnet motor and its magnetic steel, wherein the magnetic steel is in the shape of a fan-shaped ring, and the fan-shaped ring includes a central area along the circumferential direction, and progressively smaller thicknesses located on both sides of the central area. Thin area; the thickness of the central area is h, and the two straight sides of the fan ring are the places where the thickness of the corresponding tapered area is the smallest, and the thickness at this place is k, where 0.2h

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a disc permanent magnet motor and its magnetic steel. Background technique [0002] Disc permanent magnet motor is an axial magnetic field permanent magnet synchronous motor. Its typical structure is that the stator and rotor are both disc-shaped, and they are placed in the same position in the motor to generate an axial air gap magnetic field. The stator core is generally formed by punching and winding double-sided insulated cold-rolled silicon steel strips, and the effective conductors of the stator winding are radially distributed in space. The rotor is a thin disc potted with high energy product permanent magnets and reinforced fiber resin. The air gap is planar, weakening the harmonics of the air gap magnetic field and reducing vibration and noise are the key to the manufacture of this motor. [0003] The methods currently used to optimize the magnetic steel structure, weak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/06H02K15/03
Inventor 辛懋刘志鲲朱佳杰申平
Owner 浙江西子富沃德电机有限公司