Motor rotor core, motor rotor and variable frequency motor
A technology for motor rotors and variable frequency motors, applied in the field of motor rotors, variable frequency motors, and motor rotor cores, can solve problems such as high motor stack height, limited application range of rare earth magnets, and influence on motor vibration and noise, and achieve appropriate cost and efficient Benefits for widespread use
Active Publication Date: 2018-07-10
GREE ELECTRIC APPLIANCES INC +1
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Problems solved by technology
[0003] The cost of the motor rotor using ferrite magnetic steel is relatively low, but due to the problem of low ferrite magnetic energy product, the stack height of the motor is often relatively high, which affects the vibration and noise of the motor
The motor rotors that all use rare earth magnets are easier to meet the requirements of the motor magnetic energy product, but due to the material limitations of rare earth materials, the cost of motor rotors using rare earth magnets is relatively high
The application range of motors using rare earth magnets is greatly limited
Method used
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[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the specific implementations of the motor rotor core, motor rotor and variable frequency motor of the present invention will be described below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] The motor rotor core 100 of an embodiment of the present invention, such as figure 1 As shown, the iron core body 110 is included, and the iron core body 110 is provided with at least two kinds of magnetic steel grooves 120 , and each type of magnetic steel groove 120 is used to install one type of magnetic steel.
[0028] The types of the magnets are generally classified into different types of magnets due to different constituent materials of the magnets. Such as ferrite magnets made of ferrite materials and rare earth magnets...
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The invention discloses a motor rotor core, a motor rotor and a variable-frequency motor. The motor rotor core comprises a core body. At least two different kinds of magnetic steel grooves are formed in the core body, and each kind of magnetic steel grooves are used for installing one kind of magnetic steel. As different kinds of magnetic steel grooves are formed in the core body, different kinds of magnetic steel can be correspondingly installed in different kinds of magnetic steel grooves, then both the requirement for the magnetic flux of the motor and the requirement for the overall cost of the motor can be met more easily, the high-performance motor with the suitable cost can be provided, and wide use of the motor can be facilitated. Meanwhile, the motor rotor and the variable-frequency motor also have the advantages of being moderate in cost and excellent in performance.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a motor rotor iron core, a motor rotor and a variable frequency motor. Background technique [0002] In the motor rotor of the traditional variable frequency compressor motor, there are two types of magnets, one is ferrite magnets, and the other is rare earth magnets. [0003] The cost of the motor rotor using ferrite magnetic steel is relatively low, but due to the problem of low ferrite magnetic energy product, the stack height of the motor is often relatively high, which affects the vibration and noise of the motor. It is easier for a motor rotor that uses rare earth magnets to meet the requirements of the motor magnetic energy product, but due to material limitations of rare earth materials, the cost of a motor rotor that uses rare earth magnets is relatively high. The application range of the motor using rare earth magnets is greatly limited. Contents of the invention [...
Claims
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IPC IPC(8): H02K1/27
CPCH02K1/2766
Inventor 张斌骥彭子燕范少稳
Owner GREE ELECTRIC APPLIANCES INC