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Rotor, motor, compressor and refrigeration equipment

A rotor and rotor core technology, applied in the field of compressors, can solve problems affecting the competitiveness of compressor products, motor noise, etc., achieve good noise reduction effects, improve noise, and optimize the effect of air gap flux density waveforms

Active Publication Date: 2021-03-02
ANHUI MEIZHI PRECISION MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In general, there are two situations for increasing the power density of a motor. One is to increase the speed, and the other is to increase the torque density. In order to increase the torque density, the motor with the same volume will increase the current and the armature magnetic field will increase. The excitation density of the motor will increase accordingly, which will cause motor noise problems and affect the competitiveness of compressor products

Method used

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  • Rotor, motor, compressor and refrigeration equipment
  • Rotor, motor, compressor and refrigeration equipment
  • Rotor, motor, compressor and refrigeration equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Such as Figure 1 to Figure 4 As shown, according to the first aspect of the present invention, a rotor 1 is provided, including: a rotor core 102, a permanent magnet 106 and a plurality of slits, the plurality of slits include at least one first slit 108, a plurality of The slits are arranged on the rotor core 102 on the side of the mounting groove 104 away from the axis of the rotor core 102, and the minimum distance between two adjacent slits among the plurality of slits is L2; ​​wherein, the first slit 108 The minimum value L1 of the width of the first slit 108 is set between two ends along the length direction, and L2 is greater than or equal to 0.5 times L1.

[0061] Specifically, the rotor core 102 is provided with an installation groove 104, and the permanent magnet 106 is arranged in the installation groove 104 and forms a magnetic pole, and is arranged on the rotor core 102 on the side of the installation groove 104 away from the axis of the rotor core 102 thr...

Embodiment 2

[0067] Such as Figure 1 to Figure 4As shown, in one embodiment of the present invention, the rotor 1 includes: a rotor core 102, a permanent magnet 106, a first slit 108 and a second slit (not shown), wherein, based on the distance between the d-axis and the q-axis The rotor core 102 is provided with a plurality of slits, the plurality of slits include: at least two first slits 108; or at least one first slit 108 and at least one second slit, the second slit is located at The rotor core 102 between the adjacent d-axis and q-axis is located on one side or both sides of at least one first slit 108 .

[0068] In this embodiment, it is defined that the number of slits on the rotor core 102 between adjacent d-axes and q-axes is multiple. On the one hand, the multiple slits include at least two first slits 108, namely The multiple slits on the rotor core 102 between the d-axis and the q-axis are all first slits 108; on the other hand, the multiple slits include at least one first ...

Embodiment 3

[0075] Such as Figure 1 to Figure 4 As shown, in one embodiment of the present invention, the rotor 1 includes: a rotor core 102, a permanent magnet 106, a first slit 108, a second slit, and a transition portion 110 of the first slit 108, wherein the transition portion 110 The minimum value of the width is L1, and in a plane perpendicular to the axis of the rotor core 102, the side of the transition portion 110 is at least one of the following: a straight line, a curved line, or a bent line.

[0076] In this embodiment, the first slit 108 includes a transition portion 110 , and the minimum width of the transition portion 110 is L1, that is, the minimum width of the first slit 108 is located at the transition portion 110 , perpendicular to the rotor core 102 In the plane of the axis, the side of the transition part 110 is a straight line, a curve, a bent line or a combination thereof, and the transition part 110 can be reasonably set according to different positions, different...

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Abstract

The invention provides a rotor, a motor, a compressor and refrigeration equipment. The rotor comprises: a rotor core which is provided with an installation groove; a permanent magnet arranged in the mounting groove and forms a magnetic pole; a plurality of slits are arranged on the rotor iron core at one side, far away from the axis of the rotor iron core, of the mounting groove, wherein the minimum distance between two adjacent slits in the plurality of slits is L2, the plurality of slits comprise at least one first slit, the minimum value L1 of the width of the first slit is arranged betweentwo end parts of the first slit along the length direction, and L2 is greater than or equal to 0.5 time L1. According to the rotor provided by the invention, the sizes of the end parts, close to theouter wall of the rotor core, of the first slits and the end parts, close to the mounting grooves, of the first slits are relatively large, the influence of a stator armature magnetic field on a rotormagnetic field is prevented, the mechanical performance of the rotor is improved, the distance between two adjacent slits can be ensured to be within a reasonable range, and flux loss reduction is benefited.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a rotor, a motor, a compressor and a refrigeration device. Background technique [0002] At present, with the development of the modern economy, people have higher and higher requirements for the cost, noise and energy efficiency of household appliances including compressors (such as air conditioners), and at the same time, higher requirements are put forward for compressors, which are the core components of household appliances. Therefore, the current compressor industry is developing in the direction of miniaturization and light weight, and the motor is the power component of the compressor. High power density, high efficiency, low noise, and low cost have become its main technical direction. [0003] Generally, there are two situations for increasing the power density of a motor. One is to increase the speed, and the other is to increase the torque density. In order to inc...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K21/02
CPCH02K1/276H02K21/02H02K2213/03H02K2201/03
Inventor 毛临书邱小华
Owner ANHUI MEIZHI PRECISION MFG
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