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Rotor, motor and compressor

A rotor and rotor core technology, applied in the fields of rotors, motors and compressors, can solve problems such as the poor performance of the magnetic isolation bridge and the vibration of the motor, and achieve the effects of reducing noise and vibration, reducing magnetic flux leakage, and modifying the direction of the magnetic circuit Effect

Pending Publication Date: 2020-05-05
ZHUHAI LANDA COMPRESSOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Now the country advocates the path of green development and encourages enterprises to improve the energy efficiency of motors. Motors are gradually developing in the direction of high energy efficiency and low noise. Excessive cogging torque and motor torque fluctuations can easily lead to motor vibration, magnetic flux leakage from the magnetic isolation bridge and d-axis Poor magnetic gathering ability in the vicinity leads to performance degradation

Method used

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  • Rotor, motor and compressor
  • Rotor, motor and compressor
  • Rotor, motor and compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 As shown, the cylindrical surface of the rotor core is formed with a plurality of concentrically arranged arc surfaces, including a first arc surface intersecting with the q axis and a second arc surface intersecting with the d axis. The radius L1 of the first arc surface, the radius L2 of the second arc surface, and the maximum distance H between the magnetic steel slot and the center of the rotor iron core satisfy L2>H>L1, so that the rotor iron core is located at two lengths of the magnetic steel slot along the length direction. A first magnetic isolation bridge is formed at the ends respectively.

[0031] In addition to the first magnetic isolation bridge, the rotor iron core is respectively formed with a second magnetic isolation bridge on the outer sides of both ends of the magnetic steel slot along the width direction. The second magnetic isolation bridge is connected to the first magnetic isolation bridge, and the two sections of the magnetic isol...

Embodiment 2

[0035] The rotor core described in Embodiment 2 is different from Embodiment 1 in that the center distance L of the second magnetic isolation bridge close to one end of the second arc surface, and the radius L2 of the second arc surface, satisfy 0.96≤L / L2≤0.98. At the same time, from the end of the second magnetic isolation bridge close to the second arc surface to the second arc surface, the center distance of each point on the outer tangent edge of the rotor within the angle θ range is ≤ L, and 1°≤θ≤8°.

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Abstract

The invention discloses a rotor, a motor and a compressor. The rotor comprises a rotor iron core. The edge of the rotor iron core is provided with a magnetic steel groove for inserting magnetic steel.The cylindrical surface of the rotor iron core is provided with a plurality of arc surfaces which are concentrically arranged, and the arc surfaces comprise a first arc surface intersected with a q axis and a second arc surface intersected with a d axis. The radius L1 of the first arc surface, the radius L2 of the second arc surface and the maximum distance H between the magnetic steel groove andthe circle center of the rotor iron core satisfy L2 > H > L1, so that the rotor iron core forms first magnetic isolation bridges at the two ends of the magnetic steel groove along the length direction respectively. According to the rotor provided by the invention, the noise vibration of the motor is effectively reduced, and the performance of the motor is improved.

Description

technical field [0001] The invention belongs to the field of refrigeration, and in particular relates to a rotor, a motor and a compressor. Background technique [0002] At present, the country advocates the green development path and encourages enterprises to improve the energy efficiency of motors. Motors are gradually developing towards high energy efficiency and low noise. Excessive cogging torque and motor torque fluctuations can easily lead to motor vibration, magnetic flux leakage of the magnetic isolation bridge and d-axis. The poor magnetic concentration in the vicinity results in a decrease in performance. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a rotor, a motor and a compressor, so as to effectively reduce the noise and vibration of the motor and improve the performance of the motor. [0004] In order to achieve the above-mentioned purpose, the concrete technical scheme of rotor, motor and compressor of the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28H02K5/24H02K11/01
CPCH02K1/27H02K1/28H02K5/24H02K11/01H02K2213/03
Inventor 黄坚德陆林青汤石清
Owner ZHUHAI LANDA COMPRESSOR
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