Motor rotor and magnetic suspension motor

A motor rotor and shaft technology, applied in the field of motor rotor and magnetic levitation motor, can solve the problems of large sheath temperature rise, poor suspension accuracy, rotor eccentricity, etc., and achieve the effects of reducing temperature rise, improving accuracy, and reducing the degree of deformation

Pending Publication Date: 2021-05-14
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the present invention provides a motor rotor and a magnetic levitation motor to overcome the deficiencies in the prior art, such as large deformation, rotor eccentricity, poor suspension accuracy, and vibration due to the large temperature rise of the sheath during the high-speed operation of the rotor.

Method used

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Embodiment Construction

[0036] see in conjunction Figure 2 to Figure 12 As shown, according to an embodiment of the present invention, a motor rotor is provided, including a rotating shaft, the rotating shaft has a hollow cylinder section, the outer peripheral side of the hollow cylinder section is fitted with a sheath 4 in an interference fit, and the hollow cylinder section A magnetic steel 5 is interference-connected on the inner side of the cylinder wall of the hollow cylinder section, and a first cooling pipe 31 is provided between the sheath 4 and the cylinder wall of the hollow cylinder section. In this technical solution, the cooling medium (such as cooling oil) is guided to the jacket 4 by arranging the first cooling pipeline 31 between the jacket 4 and the hollow open-closed cylinder wall. The cooling of the sheath 4 effectively reduces the temperature rise of the sheath 4, thereby reducing the deformation of the sheath 4, rotor eccentricity, and vibration, and when it is applied to a magn...

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Abstract

The invention provides a motor rotor and a magnetic suspension motor. The motor rotor comprises a rotating shaft, the rotating shaft is provided with a hollow cylinder section, the peripheral side of the cylinder wall of the hollow cylinder section is sleeved with a sheath in an interference manner, the inner side of the cylinder wall of the hollow cylinder section is connected with magnetic steel in an interference manner, and a first cooling pipeline is arranged between the sheath and the cylinder wall of the hollow cylinder section. According to the invention, the temperature rise of the sheath is effectively reduced, so that the deformation of the sheath and the eccentricity and vibration of the rotor are reduced; and meanwhile, a double-layer interference fit mode is adopted, the stress of the sheath is dispersed to the rotating shaft, the equivalent stress of the sheath can be effectively reduced, the deformation degree of the sheath can be effectively reduced, abnormal vibration caused by eccentricity of the rotor is reduced, and the suspension precision and stability of the motor rotor are improved.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a motor rotor and a magnetic levitation motor. Background technique [0002] The magnetic levitation motor uses the electromagnetic force of the magnetic levitation bearing to suspend the motor rotor in the air, so that there is no mechanical contact between the motor rotor and the motor stator, and there is no mechanical friction. It is a low-loss, high-performance motor. While realizing the high speed of the motor rotor, it also has the advantages of no mechanical wear, low energy consumption, low noise, long life, no lubrication and sealing, no oil pollution, etc. The rotor speed of the magnetic levitation motor is only limited by the tensile strength of the rotor material. Therefore, the peripheral speed of the magnetic levitation motor rotor can be very high, and it is more and more widely used in high-speed equipment. [0003] The traditional hidden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/32H02K7/00H02K1/27
CPCH02K1/27H02K1/32H02K7/003
Inventor 林学明伍尚权曹俊辉王周叶黄积光
Owner GREE ELECTRIC APPLIANCES INC
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