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a motor rotor

A technology for motor rotors and mandrels, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve problems such as difficult heat dissipation, export, and limited rotor heat dissipation conditions, and achieve the effect of reducing temperature

Active Publication Date: 2015-12-02
NANJING CIGU TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fiber sleeve has no eddy current, but the permanent magnet and the mandrel will generate a certain amount of eddy current, and the temperature will also rise. It is difficult to export heat through the fiber sleeve, which makes the temperature of the rotor rise.
[0003] Due to the above reasons and the limited heat dissipation conditions of the existing rotor, the temperature of the rotor will gradually increase. When the rotor works at high temperature or the temperature rises above a certain value, it will cause irreversible demagnetization attenuation of the permanent magnet, and the performance of the motor will gradually decline, thereby losing the permanent magnet. Energy Saving Advantages of Magnetic Synchronous High Speed ​​Motor

Method used

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Embodiment Construction

[0010] Please refer to figure 1 As shown, the motor rotor of the present invention includes a mandrel 1 and a vortex sleeve 2 located on a part of the periphery of the mandrel 1 . A gas-liquid core 4 is also arranged in the channel 3 of the mandrel 1, and the gas-liquid core 4 is used to control the unidirectional flow of gas and the flow rate ratio of the outer wall of the sheath, the vortex sleeve, and the liquid on the inner wall of the mandrel. Wherein the length extension direction of the channel 3 is consistent with the length extension direction of the mandrel 1 . The rotor of the motor of the present invention also includes a permanent magnet 5 mounted on the mandrel 1, the two ends of the permanent magnet 5 along the length extension direction of the mandrel 1 are respectively provided with a magnetic isolation ring 6, between the permanent magnet 5 and the magnetic isolation ring 6 A sheath sleeve 7 is provided on the outer periphery of the cover. There is a gap be...

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Abstract

A motor rotor comprises a mandrel, a vortex sleeve located on the partial periphery of the mandrel, and a permanent magnet arranged on the mandrel. A passageway is arranged inside the mandrel, a gas-liquid core is arranged in the passageway, and the passageway is communicated with the vortex sleeve. The tail ends, in the length extension direction of the mandrel, of the permanent magnet are respectively provided with a magnetism isolation ring, and the permanent magnet and the magnetism isolation rings are sleeved with a protective sleeve. The vortex sleeve is arranged outside the protective sleeve, and a gap is reserved between the vortex sleeve and the protective sleeve. The vortex sleeve, the protective sleeve and the passageway of the mandrel form a closed cavity. According to the motor rotor, the temperature of a rotor body, namely, the permanent magnet can be effectively lowered, the power consumption of a motor is reduced, and then the efficiency of the motor is improved.

Description

Technical field: [0001] The invention relates to a motor rotor, in particular to a high-power and high-speed motor rotor. Background technique: [0002] The existing high-speed rotor structure is mainly composed of a sheath sleeve, a permanent magnet and a mandrel. Among them, the sheath sleeve material is usually selected from the following two types: one is a metal sheath sleeve, and the other is a fiber sleeve, and the metal sheath and permanent magnet materials in the metal sheath sleeve are all conductive materials, which are used for motor operation The armature reacts to the action of the harmonic magnetic field, and generates main eddy currents on the surface layer of the rotor sheath, which increases the temperature of the rotor. The fiber sleeve does not generate eddy current, but the permanent magnet and mandrel will generate a certain amount of eddy current, and the temperature will also rise. It is difficult to export heat through the fiber sleeve, which will i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/32H02K1/27H02K9/20
Inventor 熊伟华李健董继勇
Owner NANJING CIGU TECH CORP LTD