Compressor, variable frequency motor, stator punching sheet of motor, and machining method thereof

Abstract

The invention discloses a compressor, a variable frequency motor, a stator punching sheet of the motor, and a machining method thereof. The stator punching sheet comprises a first axis of symmetry, and a second axis of symmetry. The first axis of symmetry and the second axis of symmetry are perpendicular to each other and divide the stator punching sheet into four identically shaped unit parts. Each unit part comprises an inner-ring contour line segment and an outer-ring contour line segment. The outer-ring contour line segment comprises a first half edge, a bevel edge and a second half edge, wherein the first half edge, the bevel edge and the second half edge are successively connected. Close to the second half edge, the bevel edge is provided with a raised portion. The stator punching sheet is provided with an installation hole. At least one part of the installation hole is arranged on the raised portion. The intersection point of the first axis of symmetry and the second axis of symmetry is set to be O, and the inner-ring contour line segments of the four unit parts form an inner circle with the point O as the circle center thereof and the D1 as the diameter thereof. An outer circle is defined to pass through the point O and the two end points of the bevel edge. The diameter of the outer circle is set to be D2. D1 and D2 satisfy the relation of 1.9<=D2/D1<=2.1. According to the technical scheme of the stator punching sheet of the motor, based on the mutual cooperation of the dimensions of the above parts, the performance requirements can be met. Meanwhile, the amount of raw materials is reduced at the same time.

Description

Technical field [0001] The invention relates to the technical field of refrigeration equipment, and in particular to a compressor, a variable frequency motor, a stator punch of the motor and a processing method thereof. Background technique [0002] Compressor is an important component in refrigeration equipment, and its performance directly affects the overall performance of refrigeration equipment. Taking a compressor used in a frequency conversion refrigerator as an example, the shape of the stator punch of the frequency conversion motor is often designed as a quadrilateral structure. When the stator punch of this structure adopts the up-and-down staggered method, the scrap area at the junction of the three punches is large, the material utilization rate is low, and the magnetic induction intensity at the periphery of the stator punch is low. Summary of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a cer...

AI Technical Summary

Problems solved by technology

When the stator punching of this structure adopts the upper and lower staggered method to discharge the die, the waste area at the junction of the three punching pieces is large, the material utilization rate is low, and the magnetic induction intensity at the periphery of the stator punching is low

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