Stator stamped sheet, motor and compressor

Abstract

The invention provides a stator stamped sheet, a motor and a compressor. The stator stamped sheet is used for the motor and includes an outer peripheral portion and an inner peripheral portion; the outer peripheral portion is a closed curve formed by a plurality of concentric arcs and straight lines; the inner peripheral portion is arranged at the inner side of the outer peripheral portion; and the inner peripheral portion is a closed curve formed by stator teeth uniformly arranged towards the geometric center of the inner peripheral portion and connecting portions between every two adjacent stator teeth, the sidewall of each stator tooth and the bottom wall of the corresponding connecting portion forming a certain angle. The stator stamped sheet provided by the present invention includes the outer circumferential portion and the inner circumferential portion; the inner peripheral portion is provided with the plurality of stator teeth which are uniformly arranged towards the geometric center of the inner circumferential portion; the sidewall of each stator tooth and the bottom wall of the corresponding connecting portion form a certain angle; and therefore, rectangular wires can fill gaps between every two adjacent stator teeth when the rectangular wires are wound; since more wires can be wound by means of the gaps between every two adjacent stator teeth, the power density and working efficiency of the motor can be improved.

Description

technical field [0001] The invention relates to the technical field of motors, and more specifically, to a stator punch, a motor and a compressor. Background technique [0002] With the ever-changing energy efficiency standards for air conditioners, the need for high power density and high-efficiency motors for compressors is becoming more and more urgent. In addition, due to the trend of miniaturization of air-conditioning compressors, the outer diameter and height of motors are getting smaller and smaller for compressors with the same capacity. Taking the 3HP inverter compressor as an example, the outer diameter has been reduced from the original 125mm to 112mm. [0003] The reason why the compressor can continue to be miniaturized is due to the continuous improvement of the power density of the motor. The increase in power density is due to the continuous improvement in the performance of electromagnetic steel sheets and the continuous increase in the energy density of ...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, such as Figure 1 to Figure 4 As shown, among them, 1' represents the stator punch, 12' represents the outer peripheral part, 14' represents the inner peripheral part, 142' represents the stator teeth, 1422' represents the main body, 1424' represents the top, 144' represents the stator slot, 2 'Indicates the wire, from the attached figure 2 It can be seen from the figure that when the wire 2' is rectangular, there is obviously a gap inside the stator slot 144', that is, the wire 2' cannot fill the inside of the stator slot 144', so that the filling rate of the actual stator slot 144' will decrease. , and the wire 2' is prone to winding at the end, causing the size of the end to exceed the limit, which in turn causes the vibration of the wire 2' during the operation of the motor to cause damage to the insulation of the wire, reducing the reliability of the motor during operation. Further, as image 3 As shown in , the top 1422' of the stator tooth is directly formed by an arc at one end, which is not conducive to the improvement of the efficiency of the motor in actual use.

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