Single-phase alternating current permanent magnet linear disk type oscillating motor

Abstract

The invention discloses a single-phase alternating current permanent magnet linear disk type oscillating motor. The single-phase alternating current permanent magnet linear disk type oscillating motor comprises a motor base, a linear bearing, a stator iron core, a stator winding, a rotor iron yoke, a rotor permanent magnet, a linear guide rail, a limited block, a spring and a zero air gap guarantee point and is characterized in that: the stator has a disk type structure; the stator winding is embedded in a parallel toothed groove on the inner surface of the stator iron core and adopts concentrated winding arrangement; a rotor moves up and down along the linear guide rail through the linear bearing; the limited block controls the rotor only to do linear motion; N and S alternatively arranged permanent magnet is adhered to the inner surface of the rotor iron yoke; an N pole armature field and an S pole armature field which are formed by the permanent magnet and the stator winding correspond to each other; and the spring is positioned between the linear bearing and the stator motor base. The single-phase alternating current permanent magnet linear disk type oscillating motor is efficient and energy-saving, has a simple structure and no noise, is convenient to process and maintain, and is suitable for the fields of reciprocating short stroke linear motion, such as compressors, vibrating screens, pumps, family health-care massagers and the like.

Description

technical field [0001] The invention relates to a single-phase AC permanent-magnet linear disc-type oscillating motor with axial magnetic flux, in particular to the disc-shaped annular stator core and parallel groove structure of the motor, and belongs to the field of oscillating motors. Background technique [0002] Traditional technology usually uses transmission mechanisms such as ball screws, cranks, and gears to convert the rotary motion of the rotary motor into linear reciprocating motion, which has low transmission efficiency, difficult maintenance, and poor mechanical reliability. The linear motor is used to directly drive the load for reciprocating motion, which reduces friction loss, reduces the small mechanical time constant, and improves the efficiency and reliability of the electric drive system. The system using permanent magnet linear motor with transverse magnetic flux as the driving source has simple structure and high thrust density. [0003] Chinese paten...

AI Technical Summary

Problems solved by technology

However, the force-energy density of this motor is low, and the power supply method is limited

[0005] Chinese Patent Application No. 200880001914 discloses a linear motor for a linear compressor, including an inner stator, an outer stator, and a mover composed of multiple permanent magnets. The inner stator is formed by stacking core blocks in a circumferential direction to insulate them from each other, the outer stator is formed by arranging core blocks at predetermined intervals in a circumferential direction and winding a coil around the core blocks, and the permanent magnets are separated by a predetermined gap. It is arranged between the inner stator and the outer stator and interacts to reciprocate along a straight line. Its structure and iron core laminations are complicated and difficult to maintain

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