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CN-121440959-B - Stator and compressor

CN121440959BCN 121440959 BCN121440959 BCN 121440959BCN-121440959-B

Abstract

The invention discloses a stator and a compressor, and relates to the technical field of motors, wherein the stator comprises an annular yoke part and a tooth part made of amorphous materials, a plurality of first grooves are arranged in the inner hole of the yoke part along the circumferential direction of the yoke part, the tooth parts are correspondingly arranged in the first grooves, the iron loss can be improved on the premise of not changing the appearance size and the installation mode of the original stator, the energy efficiency of a product is improved, the tooth part comprises a tooth body and a tooth shoe, second installation parts of two side walls of the tooth body along the circumferential direction are in positioning connection with the two first installation parts in the first grooves, the installation of the tooth part and the yoke part is more stable, the side wall of the tooth body, which is far away from the tooth shoe, can be abutted with the bottom wall of the first grooves, the gap between the first grooves and the tooth body is smaller, and the unobstructed magnetic flux transferred between the tooth part and the tooth part of the amorphous materials can be improved through a plurality of directions perpendicular to the circumferential wall surfaces of the first grooves.

Inventors

  • AI CHENGLIU
  • Ni Fanglei
  • ZHANG WEI

Assignees

  • 安徽美芝制冷设备有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (9)

  1. 1. A stator, comprising: The yoke part is annularly arranged and is provided with an inner hole, a plurality of first grooves are formed in the wall of the inner hole at intervals along the circumferential direction of the inner hole, and first mounting parts are arranged in the first grooves; The tooth parts are correspondingly arranged in the first grooves, the tooth parts comprise tooth shoes, tooth bodies and second installation parts, parts of the tooth bodies are positioned in the first grooves, the tooth shoes are connected to one side, close to the center of the inner hole, of the tooth bodies, the second installation parts are connected to two side walls, along the circumferential direction, of the tooth bodies, and the second installation parts are connected with the first installation parts so as to limit the tooth parts to be separated from the yoke parts; the side wall of the tooth body, which is far away from the side of the tooth shoe, is configured to be capable of abutting against the bottom wall of the first groove; The two side walls of the first groove which are oppositely arranged along the circumferential direction are a first side wall and a second side wall, the first side wall and the second side wall respectively face the two side walls of the tooth body along the circumferential direction, the first side wall and the second side wall are provided with fixing mechanisms which are used for applying pressure to the side walls of the tooth body, the fixing mechanisms comprise second bulges connected with the first side wall and the second side wall, and the two second bulges respectively apply pressure to the two sides of the tooth body through deformation; The first side wall and the second side wall are respectively provided with a second groove which is arranged along the axial extension of the stator, and the second bulge is arranged on the bottom wall of the second groove and protrudes out of the notch of the second groove; The yoke part comprises a plurality of first yoke part punching sheets and at least one second yoke part punching sheet, the plurality of first yoke part punching sheets and the at least one second yoke part punching sheet are overlapped and arranged along the axial direction, the two ends of the second yoke part punching sheet along the axial direction are respectively connected with the at least one first yoke part punching sheet, the first yoke part punching sheet is provided with two first notches which are oppositely arranged at the first grooves, the plurality of first yoke part punching sheets are overlapped and pressed to enable the two first notches to respectively form the second grooves, the second yoke part punching sheet is provided with two second notches which are oppositely arranged at the first grooves, the bottom walls of the two second notches are respectively provided with first punching sheet convex parts which are protruded towards the tooth body, and the two first punching sheet convex parts can be bent along the axial direction and are abutted against the two side walls of the tooth body.
  2. 2. The stator according to claim 1, wherein the first mounting portion includes a radial limit groove provided in at least one of two side walls of the first groove which are arranged opposite to each other in the circumferential direction, and the second mounting portion includes a first protrusion provided on a side of the tooth body away from the tooth shoe and protruding along at least one of two side walls of the tooth body in the circumferential direction, the first protrusion being positionally connected to the radial limit groove.
  3. 3. The stator according to claim 1, wherein the second projection projects from the second recess with a notch having a dimension W1, W1 being 0.05mm or more, and/or, The difference between the width of the first groove and the width of the tooth body is D, D is more than or equal to 0.05mm and less than or equal to 0.1mm, and/or, The minimum distance between two of the second protrusions is W3, the width of the tooth body is W4, 0.0005. Ltoreq.delta/W3. Ltoreq.0.0015, wherein delta=W4-W3, and/or, At least one of the first side wall and the second side wall abuts against a side wall of the tooth body.
  4. 4. The stator of claim 1, wherein the number of the second yoke punching sheets is a plurality, N first yoke punching sheets are stacked between two adjacent second yoke punching sheets, and the thickness of the first yoke punching sheets is t, so that N is more than or equal to 1mm/t and less than or equal to 15mm/t.
  5. 5. The stator according to claim 1, wherein the teeth are formed by stacking amorphous material sheets along the axial direction of the stator, and/or, The yoke part is formed by laminating metal material sheets along the axial direction.
  6. 6. The stator according to claim 1, wherein the first mounting portion includes a first concave-convex structure provided on both side walls of the first groove which are arranged opposite to each other in the circumferential direction, and the second mounting portion includes a second concave-convex structure provided on both sides of the tooth body in the circumferential direction and mated with the first concave-convex structure.
  7. 7. The stator according to any one of claims 1 to 6, wherein the stator further comprises at least one stator lamination including an integrally formed stator yoke portion and stator tooth portion, a projected contour of the stator lamination in an axial direction of the stator coinciding with a projected contour of the yoke portion and the tooth portion after assembly; The stator punching sheet is positioned at least one end of the stator along the axial direction.
  8. 8. A compressor comprising a rotor and a stator as claimed in any one of claims 1 to 7, said rotor being rotatably arranged within said stator.
  9. 9. The compressor of claim 8, wherein the compressor further comprises a housing and a crankcase, wherein a plurality of corners of the yoke are respectively provided with a mounting hole penetrating along an axial direction of the stator, the stator is penetrated through the mounting holes by bolts and fixedly connected to the crankcase, and a bottom of the stator is connected to a bottom of the housing by a seat spring.

Description

Stator and compressor Technical Field The invention relates to the technical field of motors, in particular to a stator and a compressor. Background The stator of the conventional refrigerator compressor is generally laminated by silicon steel sheets, but the silicon steel sheets have problems of high hysteresis loss and high eddy current loss, so that the iron loss is high. In the related art, since amorphous materials have lower core loss than silicon steel, some motors use amorphous materials instead of silicon steel sheets. However, the amorphous material has a thin thickness and low structural strength, so that the stator manufactured by the amorphous material has low structural strength, and cannot meet the assembly requirement of the stator of the refrigerator compressor. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the stator, which is made of the amorphous material, can meet the requirement of the structural strength of the stator, and can meet the smoothness of magnetic flux transmission between the yoke and the tooth when the yoke and the tooth are made of different materials. The invention also provides a compressor with the stator. The stator comprises a yoke part, a plurality of tooth parts and a second mounting part, wherein the yoke part is in annular arrangement, the hole wall of the inner hole is provided with a plurality of first grooves at intervals along the circumferential direction of the inner hole, first mounting parts are arranged in the first grooves, the tooth parts are made of amorphous materials and correspondingly arranged in the first grooves, the tooth parts comprise tooth shoes, tooth bodies and the second mounting parts, parts of the tooth bodies are positioned in the first grooves, the tooth shoes are connected to one side of the tooth bodies close to the center of the inner hole, the second mounting parts are connected to two side walls of the tooth bodies along the circumferential direction, the second mounting parts are connected with the first mounting parts to limit the tooth parts to be separated from the yoke part, and the side wall of the tooth body on one side far away from the tooth shoes is configured to be capable of being abutted against the bottom wall of the first grooves. The stator according to the embodiment of the invention has at least the following beneficial effects: The annular yoke part is arranged, the plurality of first grooves are formed in the inner hole of the yoke part along the circumferential direction of the annular yoke part, the plurality of tooth parts made of amorphous materials are correspondingly arranged in the plurality of first grooves, the tooth parts made of amorphous materials are arranged in the yoke part made of original materials as independent components, the requirement of the structural strength of a stator can be met, the iron loss is improved on the premise that the external dimension and the mounting mode of the original stator are not changed, the energy efficiency of a product is improved, the die arrangement utilization rate of the tooth parts is high, the cost is reduced, after the tooth body is arranged in the first grooves, the second mounting parts of the two side walls of the tooth body along the circumferential direction are in positioning connection with the two first mounting parts in the first grooves, so that the mounting of the tooth part and the yoke part is more stable, the side wall of the tooth body far away from the tooth shoe side can be abutted with the bottom wall of the first grooves, the gap between the first grooves and the tooth body is smaller, the tooth part and the yoke part can transmit magnetic flux in multiple directions perpendicular to the circumferential wall surfaces of the first grooves, and the magnetic flux between the tooth part and the amorphous materials can be improved. According to some embodiments of the invention, the first mounting portion includes a radial limit groove provided in at least one of two sidewalls of the first groove which are arranged opposite to each other in the circumferential direction, and the second mounting portion includes a first protrusion provided on a side of the tooth body away from the tooth shoe and protruding along at least one of two sidewalls of the tooth body in the circumferential direction, the first protrusion being in positioning connection with the radial limit groove. According to some embodiments of the invention, the two side walls of the first groove which are arranged oppositely along the circumferential direction are a first side wall and a second side wall, the first side wall and the second side wall respectively face the two side walls of the tooth body along the circumferential direction, and the first side wall and/or the second side wall are/is provided with a fixing mechanism which is used for applying pressu