Magnetism-gathering disc type permanent magnet torque motor with fluid cooling function

Abstract

The invention discloses a magnetism-gathering disc type permanent magnet torque motor with fluid cooling function, comprising a stator core, an armature winding, a rotor core, a permanent magnet and a motor rotor shaft; each motor stator consists of the stator core and the armature winding; the stator core can carry out the winding along the circumferential direction after stamping notches by equal-width silicon steel sheets; and adjacent silicon steel sheets offset by a certain distance along the axial direction so that the section of the stator core in the direction vertical to the rotatingdirection of the motor is a parallelogram. A motor rotor forms a magnetism-gathering structure by the rotor core and a permanent magnet; when the motor is designed as a single-stator single-rotor structure; the sections of the rotor core and the permanent magnet in the direction vertical to the rotating direction of the motor are respectively a right-angled trapezium; and a conical air clearance is formed between the rotor core and the stator core as well as the permanent magnet and the stator core. The disc type permanent magnet torque motor has the advantages that the effective area of the air clearances is enlarged, the force density of the motor is high, cooling liquid flowing chambers are arranged between the motor stators and at the external sides of the motor stators at two sides, so that the heat dissipation of the motor is ensured.

Description

technical field [0001] The invention belongs to the field of permanent magnet motors, in particular to a magnetism-concentrating disc permanent magnet torque motor with fluid cooling. Background technique [0002] The traditional radial field permanent magnet motor has a competitive relationship between the electric load and the magnetic load in space. Therefore, the power density and output torque density of the motor are small, and it is generally made into a torque motor with high torque, but the material cost is high. [0003] In the existing disc type permanent magnet motor, the main magnetic field of the air gap is axial, also known as the axial magnetic field permanent magnet motor, which makes good use of the radial and axial space, so that the power density and torque density of the motor can be improved. The advantages are: short axial dimension, compact structure and low moment of inertia. From the topological point of view, the rotor is divided into surface bond...

AI Technical Summary

Problems solved by technology

From the topological point of view, the rotor is divided into surface bonded type and built-in embedded type, both of which are easy to saturate the axial air gap magnetic field at the inner diameter, and the effective utilization rate of permanent magnets is low, resulting in waste of permanent magnets

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