Permanent magnet, rotor structure, permanent magnet motor and compressor
A rotor structure and permanent magnet technology, which is applied in the fields of permanent magnets, permanent magnet motors and compressors, can solve the problems of reducing the residual magnetism of permanent magnets, reducing motor output, and reducing efficiency, so as to increase penetration and improve local coercivity Force, improve the effect of anti-demagnetization ability
Pending Publication Date: 2021-03-19
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology
[0003] Therefore, the technical problem to be solved in this disclosure is to prevent the demagnetization of the motor by increasing the coercive force of the permanent magnet, which will reduce the residual magnetism of the permanent magnet, reduce the output of the motor, and reduce the efficiency, thereby providing a permanent magnet, rotor structure, permanent Magneto and Compressor
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[0052] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the technical solution of the present disclosure will be clearly and completely described below in conjunction with specific embodiments of the present disclosure and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.
[0053] combine Figure 1 to Figure 6 As shown, the present embodiment provides a permanent magnet, including: a permanent magnet base 1, the outer surface of the permanent magnet base 1 is provided with at least one coating area, and the permanent magnet base 1 covered by at least one coating area has high anti-demagnetization ability The demagnetization re...
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The invention provides a permanent magnet, a rotor structure, a permanent magnet motor and a compressor. The permanent magnet comprises a permanent magnet base body, at least one coating area is arranged on the outer surface of the permanent magnet base body, and the demagnetization resistance of the permanent magnet base body covered by the at least one coating area is higher than that of the permanent magnet base body not covered by the at least one coating area. According to the permanent magnet disclosed by the invention, on the surface of the permanent magnet substrate, on the basis of improving intrinsic coercive force by a grain boundary permeation process, according to the local demagnetization distribution condition of the permanent magnet, multiple grain boundary permeation processes are carried out on a first demagnetization region, a serious demagnetization problem and other local regions of the permanent magnet again to form coating layers with different areas, shapes andpositions; the compound penetration amount of a local area is improved, the local coercive force is improved, and the local demagnetization resistance of the permanent magnet matrix is improved.
Description
technical field [0001] The disclosure belongs to the technical field of motors, and in particular relates to a permanent magnet, a permanent magnet motor and a compressor. Background technique [0002] The key to greatly improving the energy efficiency of compressors is the improvement of compressor motor efficiency. At present, motors using high-performance magnetic steel materials will face the risk of motor demagnetization. To increase the demagnetization current of the motor, traditionally, the remanence of the permanent magnet can only be sacrificed to increase the coercive force of the permanent magnet. In the motor designed in this way, the residual magnetism of the permanent magnet is low, which will lead to a reduction in the output of the motor and a reduction in efficiency. Contents of the invention [0003] Therefore, the technical problem to be solved in this disclosure is to prevent the demagnetization of the motor by increasing the coercive force of the per...
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Login to View More IPC IPC(8): H02K1/06H02K1/02H02K1/27
CPCH02K1/02H02K1/06H02K1/274H02K2213/03
Inventor 耿高旭陈华杰孙文娇张辉
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION