CN221103070U - Stator punching sheet, motor and refrigerator compressor capable of improving material utilization rate - Google Patents
Stator punching sheet, motor and refrigerator compressor capable of improving material utilization rate Download PDFInfo
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- CN221103070U CN221103070U CN202323113168.7U CN202323113168U CN221103070U CN 221103070 U CN221103070 U CN 221103070U CN 202323113168 U CN202323113168 U CN 202323113168U CN 221103070 U CN221103070 U CN 221103070U
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Abstract
The utility model relates to a stator punching sheet, a motor and a refrigerator compressor for improving the utilization rate of materials, which are provided with a central hole, wherein the periphery of the central hole is provided with a plurality of winding grooves, the winding grooves are arranged into a circle around the central hole, the outer contour of the stator punching sheet comprises two straight-line sections A, one straight-line section B and one straight-line section C, the two straight-line sections A are arranged on the front and back opposite sides, the straight-line sections B and the straight-line section C are arranged on the left and right opposite sides, the straight-line sections B and the straight-line sections C are arranged in parallel, one side of each of the two straight-line sections A is respectively provided with a connecting line with two ends of the straight-line section B, the other side of each of the two straight-line sections A is respectively provided with a plurality of straight-line sections between the two ends of the straight-line section C, the plurality of straight-line sections are connected in a head-to-tail mode, and the length of the straight-line section B is longer than that of the straight-line section C; the utility model has unchanged discharge size, but the waste material of the motor is reduced, the material utilization rate is higher, the iron loss of the stator and the rotor is reduced, and the efficiency of the motor is improved by about 1 percent.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a stator punching sheet for improving material utilization rate, a motor and a refrigerator compressor.
Background
The magnetic circuits on the left side and the right side of the conventional motor punching sheet are designed completely symmetrically, as shown in fig. 5 and 7, the magnetic flux density is completely symmetrical left and right, and as can be seen from a double-row die discharging diagram shown in fig. 6, the silicon steel materials on the left side and the right side are more wasted, and the motor efficiency is also affected to a certain degree.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provide a stator punching sheet, a motor and a refrigerator compressor for improving the material utilization rate.
The specific scheme of the utility model is as follows: the stator punching sheet for improving the material utilization rate is provided with a central hole, a plurality of winding grooves are formed in the periphery of the central hole, the winding grooves are arranged into a circle around the central hole, the outer contour of the stator punching sheet comprises two straight line sections A, one straight line section B and one straight line section C, the two straight line sections A are arranged on the front side and the back side which are opposite, the straight line sections B and the straight line sections C are arranged on the left side and the right side which are opposite, the straight line sections B and the straight line sections C are arranged in parallel, connecting lines are arranged between one sides of the two straight line sections A and two ends of the straight line sections B respectively, a plurality of straight line sections are arranged between the other sides of the two straight line sections A and the two ends of the straight line sections C respectively, the plurality of straight line sections are connected in a head-to-tail mode, and the length of the straight line sections B is larger than that of the straight line sections C.
Further, the length of the straight line segment B is L1, the length of the straight line segment C is L2, and L1/L2 is more than or equal to 1.5 and less than or equal to 3.5.
Further, the connecting line is an arc line protruding outwards.
Further, the circle center of the circular arc line coincides with the circle center of the central hole.
Further, the connecting line is a straight line.
Further, the plurality of straight line segments comprise a straight line segment D and a straight line segment E, the straight line segment D and the straight line segment C are arranged in parallel, and two ends of the straight line segment E are respectively connected with the ends of the straight line segment D and the straight line segment C.
Further, the distance from the bottom tangent of the winding groove close to the straight line segment B is equal to the distance from the bottom tangent of the winding groove close to the straight line segment C.
Further, the winding groove close to the straight line section B is of an asymmetric structure.
An electric machine comprises the stator punching sheet.
A refrigerator compressor is provided with the motor.
The utility model has the following beneficial effects: the discharge size of the motor is unchanged, but the waste of the motor is reduced, and the material utilization rate is higher; because the external diameter of the motor is unchanged, the internal installation space of the compressor is not influenced, the left magnetic flux density of the stator is reduced, the iron loss of the stator and the rotor is reduced, and the efficiency of the motor is improved by about 1 percent.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic view of a third embodiment of the present utility model;
FIG. 4 is a schematic drawing of a blanking discharge of the present utility model;
FIG. 5 is a schematic structural view of a prior art stator lamination;
FIG. 6 is a prior art blanking discharge schematic;
FIG. 7 is a schematic illustration of CAE simulated magnetic density of a prior art stator lamination;
FIG. 8 is a schematic illustration of CAE simulated magnetic density of the stator laminations of the present utility model;
in the figure: 1. straight line segment A; 2. a connecting wire; 3. a straight line segment B; 4. a straight line segment C; 5. a straight line segment E; 6. a straight line segment D; 7. a wire winding groove; 8. an asymmetric shaped groove.
Detailed Description
Example 1
Referring to fig. 1, the embodiment is a stator punching sheet for improving material utilization rate, provided with a central hole, wherein the periphery of the central hole is provided with a plurality of winding grooves 7, the winding grooves 7 are arranged into a circle around the central hole, the outer contour of the stator punching sheet comprises two straight line sections A1, one straight line section B3 and one straight line section C4, the two straight line sections A1 are arranged on the front and back opposite sides, the straight line section B3 and the straight line section C4 are arranged on the left and right opposite sides, the straight line section B3 and the straight line section C4 are arranged in parallel, a connecting line 2 is arranged between one side of the two straight line sections A1 and two ends of the straight line section B3 respectively, a plurality of straight line sections are arranged between the other side of the two straight line sections A1 and two ends of the straight line section C4 respectively, the plurality of straight line segments are connected end to end, and the length of the straight line segment B3 is longer than that of the straight line segment C4. Further, the plurality of straight line segments comprise a straight line segment D6 and a straight line segment E5, the straight line segment D6 and the straight line segment C4 are arranged in parallel, and two ends of the straight line segment E5 are respectively connected with the ends of the straight line segment D6 and the straight line segment C4. Further, the distance from the tangent line at the bottom of the winding groove 7 near the straight line segment B3 to the straight line segment B3 is equal to the distance from the tangent line at the bottom of the winding groove 7 near the straight line segment C4 to the straight line segment C4. Further, the length of the straight line segment B3 is L1, the length of the straight line segment C4 is L2, and L1/L2 is more than or equal to 1.5 and less than or equal to 3.5. Further, the connecting line 2 is an outwards protruding arc line, the circle center of the arc line coincides with the circle center of the central hole, and the arc line coincides with the outer diameter line of the motor. Referring to fig. 2, the structure of the present embodiment is basically the same as that of the first embodiment, except that the connecting line 2 is a straight line, or may be other closed curves. Further, arc transitions are arranged between the straight line segment D6 and the straight line segment C4 and between the straight line segment D6 and the straight line segment E5. Referring to fig. 3, the structure of the third embodiment is basically the same as that of the first embodiment, except that the winding slot 7d near the straight line segment B3 is an asymmetric special slot 8, and the other winding slots 7a, B, and c are symmetrical structures with a circular center line as a symmetrical center line. The utility model designs the groove shape of the left winding groove 7d in a special shape, so that the magnetic densities of the yoke parts at the left side and the right side are balanced again, the average magnetic density of the punched sheet is further reduced, and the motor efficiency is improved. Comparing fig. 4 with fig. 6, it can be known that the present utility model saves the silicon steel sheet material of the hatched area in fig. 6 during discharging, and improves the material utilization rate. Comparing the results of CAE simulation of the stator lamination with the two structures shown in fig. 8 and fig. 7, it is known that, under the condition that the input current and the winding turns are unchanged, the magnetic flux density at the left side of the motor with an asymmetric structure of the present utility model is reduced, for example, at the same coordinate position (x= -53.8, y=21.9, the magnetic flux density peak point of the yoke part of the left side stator), the magnetic flux density B of the present utility model is 1.09728T, while the magnetic flux density B at the point of the motor with the existing structure is 1.37264T, and the reduction ratio reaches 25.1%; compared with the stator and rotor with the traditional structure, the utility model reduces the iron loss from 4.43508 Watts to 4.3564 Watts, the reduction ratio reaches 1.8%, and the motor efficiency is improved by about 1%.
Example IV
The embodiment provides a motor, which comprises a stator and a rotor, wherein the stator is formed by overlapping a plurality of stator punching sheets, and the stator punching sheets are adopted in the embodiment.
Example five
The embodiment provides a compressor, and the motor described in the fourth embodiment is installed inside the compressor.
Claims (10)
1. Stator punching sheet for improving material utilization rate is provided with a central hole, the periphery of the central hole is provided with a plurality of winding grooves, and the winding grooves are arranged into a circle around the central hole, and the stator punching sheet is characterized in that: the outer contour of the stator punching sheet comprises two straight line sections A, one straight line section B and one straight line section C, wherein the two straight line sections A are arranged on the front and back opposite sides, the straight line sections B and the straight line sections C are arranged on the left and right opposite sides, the straight line sections B and the straight line sections C are arranged in parallel, connecting lines are arranged between one sides of the two straight line sections A and the two ends of the straight line sections B respectively, a plurality of straight line sections are arranged between the other sides of the two straight line sections A and the two ends of the straight line sections C respectively, the plurality of straight line sections are connected in an end-to-end mode, and the length of the straight line section B is larger than that of the straight line section C.
2. The stator lamination with improved material utilization according to claim 1, wherein: the length of the straight line segment B is L1, and the length of the straight line segment C is L2, wherein L1/L2 is more than or equal to 1.5 and less than or equal to 3.5.
3. The stator lamination with improved material utilization according to claim 1, wherein: the connecting line is an arc line protruding outwards.
4. A stator lamination with improved material utilization as defined in claim 3, wherein: the circle center of the circular arc line coincides with the circle center of the central hole.
5. The stator lamination with improved material utilization according to claim 1, wherein: the connecting line is a straight line.
6. The stator lamination with improved material utilization according to claim 1, wherein: the plurality of straight line segments comprise a straight line segment D and a straight line segment E, wherein the straight line segment D and the straight line segment C are arranged in parallel, and two ends of the straight line segment E are respectively connected with the ends of the straight line segment D and the straight line segment C.
7. The stator lamination with improved material utilization according to claim 1, wherein: the distance from the bottom tangent of the winding groove close to the straight line segment B is equal to the distance from the bottom tangent of the winding groove close to the straight line segment C.
8. The stator lamination with improved material utilization according to claim 1, wherein: the winding groove close to the straight line section B is of an asymmetric structure.
9. An electric motor, characterized by: a stator plate comprising the stator core of any one of claims 1-8.
10. A refrigerator compressor characterized by: an electrical machine as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323113168.7U CN221103070U (en) | 2023-11-17 | 2023-11-17 | Stator punching sheet, motor and refrigerator compressor capable of improving material utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323113168.7U CN221103070U (en) | 2023-11-17 | 2023-11-17 | Stator punching sheet, motor and refrigerator compressor capable of improving material utilization rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221103070U true CN221103070U (en) | 2024-06-07 |
Family
ID=91303766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323113168.7U Active CN221103070U (en) | 2023-11-17 | 2023-11-17 | Stator punching sheet, motor and refrigerator compressor capable of improving material utilization rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221103070U (en) |
-
2023
- 2023-11-17 CN CN202323113168.7U patent/CN221103070U/en active Active
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