Rotor core components, motors, air conditioners

Abstract

The invention provides a rotor core assembly, a motor, and an air conditioner, wherein the rotor core assembly includes a rotor core and a plurality of magnetic steels, the rotor core has a shaft hole and a plurality of magnets arranged evenly around the shaft hole a magnetic steel groove, the magnetic steel groove extends along the radial direction of the shaft hole and penetrates the outer peripheral wall of the rotor core, and a plurality of the magnetic steels are respectively installed on the plurality of the magnetic steels in one-to-one correspondence In the groove, there is a concave-convex limiting structure between the radial side wall of the magnetic steel groove and the corresponding mating surface of the magnetic steel. According to the present invention, a concave-convex limiting structure is formed between the radial side elevation of the magnetic steel groove and the side elevation of the magnetic steel to form a clamping position without occupying the radial space of the magnetic steel groove, which is beneficial to increase the magnetic steel The radial length reduces the magnetic flux leakage at the radially outer end of the magnetic steel.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a rotor core assembly, a motor and an air conditioner. Background technique [0002] In the prior art, a permanent magnet synchronous motor with a tangential (spoke) rotor structure has been widely used in various industries, and this type of motor has a high torque density and a small volume. Studies have shown that if a ferrite tangential structure motor without a magnetic isolation bridge is used, greater advantages can be exerted. However, the ferrite tangential rotor structure without magnetic isolation bridges faces the problems of structural stability and processing feasibility. Among them, there are many existing technical solutions related to the limit installation of magnets (also called magnets), and generally adopt the limit form of buckle, such as attached figure 1 , this structure can ensure that the magnetic steel is reliably connected to ...

AI Technical Summary

Problems solved by technology

Among them, there are many existing technical solutions related to the limit installation of magnets (also called magnets), and generally adopt the limit form of buckle, such as attached figure 1 , this structure can ensure that the magnetic steel is reliably connected to the rotor core, but the buckle structure occupies the radial space of the magnetic steel slot, reduces the length of the magnetic steel, and increases the magnetic flux leakage

Images