Stator, motor, compressor and refrigeration equipment

Abstract

The invention discloses a stator, a motor, a compressor and refrigeration equipment. The stator comprises a stator iron core and a coil winding, wherein the stator iron core is provided with N stator grooves uniformly distributed along the circumference; the coil winding comprises a first main winding and a second main winding arranged symmetrically, and a first auxiliary winding and a second auxiliary winding arranged symmetrically; each of the first main winding and the second main winding comprises N1 layers of main winding coils; each of the first auxiliary winding and the second auxiliary winding comprises N2 layers of auxiliary winding coils; each layer of the main winding coil and each layer of the auxiliary winding coil are embedded in the two stator grooves; a single-layer winding is embedded in each stator groove; and N=4*(N1+N2) and N2< / =N1< / =4. In a condition in which the main windings and the auxiliary windings are arranged symmetrically, one stator groove is limited only to accommodate the single-layer coil, the utilization rate of a stator iron core material is improved while low-order sub harmonics of the motor are reduced, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a stator, a motor, a compressor and refrigeration equipment. Background technique [0002] Single-phase motors with two-pole winding structure are widely used in compressors with non-adjustable speed because of their reliability and excellent performance. In the prior art, when the above-mentioned single-phase motor has many stator slots, at least one layer of main winding coil and one layer of auxiliary winding coil share the same stator slot. Excessively high harmonic potentials are induced on the coil windings, especially the low-order third harmonic potentials and fifth harmonic potentials, so as to avoid slow starting of the motor and excessive noise. [0003] But on the other hand, the stator slot filling rate of the motor with the above-mentioned winding structure is generally not high, and some stator slots may be left empty, resulting in waste of materials and incre...

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Problems solved by technology

[0003] But on the other hand, the stator slot filling rate of the motor with the above-mentioned winding structure is generally not high, and some stator slots may be left empty, resulting in waste of materials and increased production costs; and at this time, the winding factor of the motor is relatively low , making the performance of the motor degrade and thus lack of market competitiveness

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