Conical air-gap and axial dual-loop type magnetic-field permanent-magnet synchronous motor

Abstract

The present invention relates to the technical field of motors, and particularly relates to a conical air-gap and axial dual-loop magnetic-field permanent-magnet synchronous motor, which comprises a shell, two groups of stator iron cores and a rotor. The stator iron cores and the rotor are arranged in the shell. The two ends of the shell are respectively connected with one end cover. A rotating shaft is rotatably supported by a bearing on the end covers. The motor is characterized in that two groups of stator iron cores are arranged. Each group of stator iron cores comprises a stator yoke partlocated at a first end and a stator tooth part located at a second end. The end surfaces of the stator yoke parts of two groups of stator iron cores are attached to each other. A positioning ring isarranged on the circumferential surface of each stator yoke part. The two groups of stator iron cores are arranged in the shell by means of positioning rings. The end surface of the stator tooth partof each group of stator iron cores forms a stator conical surface. Each group of stator iron cores is matched and provided with one rotor. According to the invention, by means of the motor, the efficiency of motor production and assembly is effectively improved. Meanwhile, the use efficiency of the motor can be improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a tapered air gap axial double-circuit magnetic field permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the advantages of high efficiency, high output, adjustable speed, good dynamic performance and high reliability. However, in existing permanent magnet motors, the magnets are often arranged in the inner bore of the stator core. Due to space constraints, rare earth magnets with high "magnetic energy product" and small volume must be selected. This kind of magnetic steel is very expensive because of containing rare earth element samarium or neodymium (sarmarium cobalt magnetic steel or neodymium iron boron magnetic steel), and the resources are limited. (Of course, the outer rotor type motor can also arrange the magnetic steel on the periphery of the stator core, but it is also limited by the outer diameter). Space const...

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Problems solved by technology

However, with the deepening of the production practice of the patented technology, the applicant found that: 1. The stator core exists independently in the casing. Although there is a fixed process later, it needs to be pre-positioned in advance, which is time-consuming and laborious; Punching is stacked, but non-mechanical operations such as "stacking" and "fastening forming" take up a lot of time and affect mass production

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