CN110768428A - Rotor core, rotor, variable frequency motor and compressor - Google Patents
Rotor core, rotor, variable frequency motor and compressor Download PDFInfo
- Publication number
- CN110768428A CN110768428A CN201810837670.7A CN201810837670A CN110768428A CN 110768428 A CN110768428 A CN 110768428A CN 201810837670 A CN201810837670 A CN 201810837670A CN 110768428 A CN110768428 A CN 110768428A
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- China
- Prior art keywords
- rotor
- punching sheet
- punching
- group
- sheet group
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a rotor core, a rotor, a variable frequency motor and a compressor, wherein the rotor core comprises a first punching sheet group (10) formed by stacking a plurality of first rotor punching sheets (1) and a second punching sheet group (20) formed by stacking a plurality of second rotor punching sheets (2), and the second punching sheet group (20) is fixed at one end of the first punching sheet group (10); the first rotor punching sheet (1) is provided with a magnet groove (11) for mounting a magnet, and the second rotor punching sheet (2) is arranged to be capable of blocking the magnet from coming off from one end, provided with the second punching sheet group (20), of the first punching sheet group (10) to form the magnet groove (11). The rotor core, the rotor, the variable frequency motor and the compressor provided by the invention reduce the use of the middle end plate of the rotor, can improve the production efficiency and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a rotor core, a rotor, a variable frequency motor and a compressor.
Background
As is well known, the variable frequency motor has high energy efficiency and simple structure, and is widely applied to the field of household appliances such as air conditioners.
The structure of a rotor of a prior art inverter motor is generally shown in fig. 1, and includes a rotor core 1 ', a first end plate 3 ' and a second end plate 4 ' respectively located at two ends of the rotor core 1 ', and a magnet 2 ' located in a slot 11 ' of the rotor core 1 ', and the like.
Disclosure of Invention
The invention aims to overcome the defects of low production efficiency, high cost and the like caused by complex rotor structure of a motor in the prior art.
In order to achieve the above object, in one aspect, the present invention provides a rotor core, where the rotor core includes a first punching sheet group formed by stacking a plurality of first rotor punching sheets and a second punching sheet group formed by stacking a plurality of second rotor punching sheets, and the second punching sheet group is fixed to one end of the first punching sheet group;
the first rotor punching sheet is provided with a magnet groove for mounting a magnet, and the second rotor punching sheet is arranged to be capable of preventing the magnet from coming off the magnet groove from one end, provided with the second punching sheet group, of the first punching sheet group.
Preferably, the thickness of the first rotor punching sheet is 0.2-0.65 mm;
and/or the thickness of the second rotor punching sheet is 0.2-0.65 mm;
preferably, the number n of the second rotor sheets is: n is more than or equal to 1 and less than or equal to 10.
Preferably, the first rotor punching sheet and the second rotor punching sheet are made of electromagnetic steel plate materials.
Preferably, the first rotor punching sheet and the second rotor punching sheet are manufactured by punching with the same die.
According to another aspect of the invention, a rotor is further provided, the rotor includes the rotor core as described above, and the rotor further includes an end plate, and the end plate is located at one end of the first punching sheet group of the rotor core, which is far away from the second punching sheet group.
Preferably, the rotor further includes a first balance weight and a second balance weight, the first balance weight is fixed on an end surface of the end plate, the end surface being away from the first punching sheet group, and the second balance weight is fixed on an end surface of the second punching sheet group, the end surface being away from the first punching sheet group.
Preferably, the first weight and the second weight are fixed by rivet riveting.
According to a further aspect of the present invention, there is also provided an inverter motor including the rotor as described above.
According to still another aspect of the invention, a compressor is further provided, and the compressor is provided with the variable frequency motor.
According to the rotor core, the rotor, the variable frequency motor and the compressor, the second rotor punching sheets are stacked to form the second rotor punching sheet group, and the second rotor punching sheet group is fixed at one end of the first punching sheet group to prevent the magnet in the first punching sheet group from falling out of the magnet slot, so that the use of the end plate of the rotor is reduced. Therefore, on the premise of ensuring the energy efficiency of the motor and the compressor, the production efficiency is improved, and the production cost and the cost of raw materials are reduced.
Drawings
FIG. 1 is a schematic view of a prior art rotor;
FIG. 2A is a schematic view of a rotor core according to one embodiment of the present invention;
FIG. 2B is a schematic view of a rotor core viewed from another perspective;
FIG. 3 is a schematic structural diagram of a first rotor sheet;
fig. 4 is a schematic structural diagram of the second rotor sheet.
Description of the reference numerals
1' -a rotor core; 11' -slot; 2' -a magnet; 3' -a first end plate; 4' -a second end plate;
1-a first rotor sheet; 11-a magnet slot; 2-a second rotor sheet; 10-a first punching sheet group; 20-second punching sheet group.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. The term "inside" and "outside" refer to the inside and the outside of the contour of each member itself.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The invention provides a rotor core, as shown in fig. 2A-4, the rotor core comprises a first punching sheet group 10 formed by stacking a plurality of first rotor punching sheets 1 and a second punching sheet group 20 formed by stacking a plurality of second rotor punching sheets 2, wherein the second punching sheet group 20 is fixed at one end of the first punching sheet group 10;
the first rotor punching sheet 1 is provided with magnet slots 11 for mounting magnets, and after the first rotor punching sheets 1 are stacked, the magnet slots 11 are correspondingly arranged, so that the magnets can be mounted and inserted in the magnet slots 11 of the first punching sheet group 10, and the second rotor punching sheet 2 is arranged to be capable of blocking the magnets from coming off the magnet slots 11 from one end, provided with the second punching sheet group 20, of the first punching sheet group 10.
According to the rotor core provided by the invention, the second rotor punching sheets 2 are arranged and stacked to form the second rotor punching sheet group 20, and the second rotor punching sheet group is fixed at one end of the first punching sheet group 10 to prevent the magnets in the first punching sheet group 10 from falling out of the magnet slots 11, so that the use of end plates of the rotor is reduced, and the second punching sheet group 20 is directly used as the end plate for preventing the magnets from falling out. Therefore, on the premise of ensuring the energy efficiency of the motor, the production efficiency is improved, and the production cost and the cost of raw materials are reduced.
In a preferred embodiment of the present invention, the first rotor punching sheet 1 and the second rotor punching sheet 2 have structures as shown in fig. 3 and 4, respectively, the structures of the first rotor punching sheet 1 and the second rotor punching sheet 2 are substantially the same, except that a magnet groove 11 for mounting a magnet is provided on the first rotor punching sheet 1.
Therefore, the first rotor punching sheet 1 and the second rotor punching sheet 2 can be manufactured by adopting the same die, and then the magnet slots 11 are processed on the first rotor punching sheet 1 to obtain a final product. The manufacturing of the first rotor punching sheet 1 and the second rotor punching sheet 2 can reduce the production cost.
It can be understood by those skilled in the art that the structures of the first rotor punching sheet 1 and the second rotor punching sheet 2 are not limited to the structures shown in fig. 3 and 4, and other structural forms of the punching sheets are also possible as long as the second rotor punching sheet 2 is arranged at one end of the first rotor punching sheet group 10 to prevent the magnets from being pulled out.
Preferably, the first rotor punching sheet 1 and the second rotor punching sheet 2 are both made of electromagnetic steel plate materials.
Preferably, the thickness of the first rotor punching sheet 1 is 0.2-0.65 mm; and/or the thickness of the second rotor punching sheet 2 is 0.2-0.65 mm;
since the purpose of the second punching sheet group 20 composed of the second rotor punching sheets 2 is to serve as an end plate to prevent the magnets from coming out of the magnet slots of the first punching sheet group 10, the number of the second rotor punching sheets 2 in the second punching sheet group 20 does not need to be too large, and preferably, the number n of the second rotor punching sheets 2 is: n is more than or equal to 1 and less than or equal to 10.
According to another aspect of the present invention, there is also provided a rotor comprising a rotor core according to the above, said rotor further comprising an end plate located at an end of said first punch blade group 10 of the rotor core remote from the second punch blade group 20.
The second punching sheet group 20 is located at one end of the first punching sheet group 10, and can prevent the magnet in the first punching sheet group 10 from falling out of the magnet slot 11 from the end, and the end plate is arranged at the other end and can prevent the magnet from falling out of the magnet slot 11 from the other end.
In addition, the rotor further includes a first balance weight and a second balance weight, the first balance weight is fixed on the end surface of the end plate, which is away from the first punching sheet group 10, and the second balance weight is fixed on the end surface of the second punching sheet group 20, which is away from the first punching sheet group 10.
Preferably, the first weight and the second weight are fixed by rivet riveting. Specifically, the rivet sequentially penetrates through the first balance block and the end plate from the outer side of the first balance block, and is then riveted and fixed to a rivet hole formed in the first punching sheet group 10. Similarly, the second weight at the other end is riveted to the rivet hole of the second punch set 20 by passing a rivet through the second weight.
According to the rotor provided by the invention, the end plates are only arranged at one end of the rotor core, and the end plates are not required to be arranged at the two ends, so that the use of the end plates is reduced, the production efficiency can be improved, and the production cost and the raw material cost are reduced.
In yet another aspect of the invention, there is provided an inverter motor comprising a rotor as described above.
The invention also provides a compressor which is provided with the variable frequency motor.
The advantages of the inverter motor and the compressor are the same as those of the rotor core and the rotor, and are not described in detail herein.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The rotor core is characterized by comprising a first punching sheet group (10) formed by stacking a plurality of first rotor punching sheets (1) and a second punching sheet group (20) formed by stacking a plurality of second rotor punching sheets (2), wherein the second punching sheet group (20) is fixed at one end of the first punching sheet group (10);
the first rotor punching sheet (1) is provided with a magnet groove (11) for mounting a magnet, and the second rotor punching sheet (2) is arranged to be capable of blocking the magnet from coming off from one end, provided with the second punching sheet group (20), of the first punching sheet group (10) to form the magnet groove (11).
2. The rotor core according to claim 1, wherein the thickness of the first rotor sheet (1) is 0.2-0.65 mm;
and/or the thickness of the second rotor punching sheet (2) is 0.2-0.65 mm.
3. The rotor core according to claim 1, wherein the number n of the second rotor sheets (2) is: n is more than or equal to 1 and less than or equal to 10.
4. The rotor core according to claim 1, wherein the first rotor punching sheet (1) and the second rotor punching sheet (2) are made of electromagnetic steel plate materials.
5. The rotor core according to any one of claims 1-4, wherein the first rotor punching sheet (1) and the second rotor punching sheet (2) are manufactured by punching with the same die.
6. A rotor, characterized in that the rotor comprises a rotor core according to any one of claims 1-5, the rotor further comprising an end plate (3), the end plate (3) being located at an end of the first group of punching sheets (10) of the rotor core, which end is remote from the second group of punching sheets (20).
7. Rotor according to claim 6, characterized in that it further comprises a first counterweight (4) and a second counterweight (5), said first counterweight (4) being fixed on the end face of the end plate (3) facing away from the first group of punching blades (10), said second counterweight (5) being fixed on the end face of the second group of punching blades (20) facing away from the first group of punching blades (10).
8. Rotor according to claim 7, characterized in that the first weight (4) and the second weight (5) are riveted by means of rivets (6).
9. Inverter motor, characterized in that it comprises a rotor according to any of claims 6-8.
10. A compressor, characterized in that the compressor is provided with the inverter motor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810837670.7A CN110768428A (en) | 2018-07-26 | 2018-07-26 | Rotor core, rotor, variable frequency motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810837670.7A CN110768428A (en) | 2018-07-26 | 2018-07-26 | Rotor core, rotor, variable frequency motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110768428A true CN110768428A (en) | 2020-02-07 |
Family
ID=69326928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810837670.7A Pending CN110768428A (en) | 2018-07-26 | 2018-07-26 | Rotor core, rotor, variable frequency motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110768428A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202550731U (en) * | 2012-03-20 | 2012-11-21 | 上海日立电器有限公司 | Rotor assembly of permanent magnet motor for air condition compressor |
| JP2013009561A (en) * | 2011-06-27 | 2013-01-10 | Toyota Motor Corp | Rotating electric machine |
| JP2015163019A (en) * | 2014-02-28 | 2015-09-07 | 多摩川精機株式会社 | Rotor structure for ipm motor and assembling method for the same |
| CN205004850U (en) * | 2015-09-14 | 2016-01-27 | 上海日立电器有限公司 | Formula structure is buryyed to balancing piece |
| CN108138649A (en) * | 2015-10-02 | 2018-06-08 | 株式会社Ihi | Electric booster |
-
2018
- 2018-07-26 CN CN201810837670.7A patent/CN110768428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013009561A (en) * | 2011-06-27 | 2013-01-10 | Toyota Motor Corp | Rotating electric machine |
| CN202550731U (en) * | 2012-03-20 | 2012-11-21 | 上海日立电器有限公司 | Rotor assembly of permanent magnet motor for air condition compressor |
| JP2015163019A (en) * | 2014-02-28 | 2015-09-07 | 多摩川精機株式会社 | Rotor structure for ipm motor and assembling method for the same |
| CN205004850U (en) * | 2015-09-14 | 2016-01-27 | 上海日立电器有限公司 | Formula structure is buryyed to balancing piece |
| CN108138649A (en) * | 2015-10-02 | 2018-06-08 | 株式会社Ihi | Electric booster |
Non-Patent Citations (1)
| Title |
|---|
| 湘潭电机厂编: "《交流电机设计手册》", 30 June 1978, 湖南人民出版社 * |
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| PB01 | Publication | ||
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Application publication date: 20200207 |