CN201038847Y - Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor - Google Patents
Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor Download PDFInfo
- Publication number
- CN201038847Y CN201038847Y CNU2007200688286U CN200720068828U CN201038847Y CN 201038847 Y CN201038847 Y CN 201038847Y CN U2007200688286 U CNU2007200688286 U CN U2007200688286U CN 200720068828 U CN200720068828 U CN 200720068828U CN 201038847 Y CN201038847 Y CN 201038847Y
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a permanent magnet motor, in particular to a magnet at a magnet pole of a permanent magnet motor rotor inside a compressor, comprising a rotor with a magnet slot and a rotor magnet which is plugged into the magnet slot. The utility model is characterized in that every block of the rotor magnet is spliced by a plurality of intersected small magnets; every small magnet is coated with an insulating material layer on the surface. By adopting the technical proposal, the utility model solves the problem that the eddy current of the motor rotor has high loss, the gap between the magnet and the magnet slot is too large and the motor magnets with different overlapping thicknesses are molded by different moulds.
Description
Technical field
The utility model relates to magneto, particularly the structure of built-in magnet permagnetic synchronous motor (IPMSM) the rotor pole magnet of compressor.
Background technology
It is long-pending that the magnetic pole of existing magneto generally is that sectional area that the magnet in the magnetic pole groove adopts a monoblock magnet to constitute magnet equals the rotor magnet slot cross-section, and magnet length equals the rotor length overall.Raising along with power of motor, the magnet volume of motor is increasing, because ndfeb magnet has the big problem of surface eddy loss, so eddy current loss also has the phenomenon of increase, owing to increasing, the magnet volume cause the magnet size difficulty of processing also to increase simultaneously, so thereby can cause the gap change of magnet and magnet groove to increase noise and lower efficiency greatly.
Summary of the invention
The purpose of this utility model is to provide by monolithic magnet is cut apart and solves large-size IPMSM rotor magnet vortex flow loss height, and the thickness of magnet is because magnet that oversize precise decreasing produced and magnet groove excesssive gap and differently fold the problem that thick motor magnet need be made mould respectively.
Realize that the utility model purpose technical scheme is: a kind of built-in magnet permanent magnet machine rotor pole magnet of compressor, comprise rotor that is provided with the magnet groove and the rotor magnet that inserts in the magnet groove, wherein, each piece of this rotor magnet is to be spliced by the some small magnets of cutting apart, and each small magnet surface scribbles insulation material layer.
Above-mentioned every block of rotor magnet can by two or three block lengths be the magnet slot length 1/2 or 1/3 and width is spliced with magnet well width and highly identical small magnet with height; Above-mentioned every block of rotor magnet also can by two width be the magnet well width 1/2 and length is spliced with magnet slot length and highly identical small magnet with height; Above-mentioned every block of rotor magnet also can respectively be spliced for the 1/2 height small magnet identical with magnet groove height of magnet slot length with width by four block lengths; Above-mentioned every block of rotor magnet also can be by two two right-angle side and is spliced with the length and width of magnet groove and the leg-of-mutton small magnet that highly equates highly respectively.Above-mentioned small magnet inserts the magnet groove under no magnetic state, can use chemical method to be fixed in the magnet groove before magnetizing or only use the interference fit fixed magnet in the magnet groove.
Owing to adopted above-mentioned technical solution, solved rotor magnet vortex flow loss height, magnet and magnet groove excesssive gap and differently fold the problem that thick motor magnet need be made mould respectively.
Description of drawings
Fig. 1 is the rotor view;
Fig. 2 is magnet profile figure;
Fig. 3 is the partitioning scheme diagram of magnet;
Fig. 4 is the another kind of partitioning scheme diagram of magnet;
Fig. 5 is another partitioning scheme diagram of magnet;
Fig. 6 is another partitioning scheme diagram of magnet.
Embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments:
The utility model is divided into some by the magnet with monoblock, and every surface carries out respectively inserting the purpose that the magnet groove plays the loss of reduction magnet vortex flow according to original shape after the insulation processing.
Referring to Fig. 1-6, a kind of built-in magnet permanent magnet machine rotor pole magnet of compressor, comprise rotor that is provided with the magnet groove and the rotor magnet that inserts in the magnet groove, wherein, each piece of this rotor magnet 1 is to be spliced by the some small magnets of cutting apart, each small magnet surface scribbles insulation material layer, as insulating material such as epoxy resin.
See Fig. 3, every block of rotor magnet 1 can by three block lengths be the magnet slot length 1/3 and width and height and magnet well width and highly identical small magnet 11 are spliced.Every block of rotor magnet 1 also can by two block lengths be the magnet slot length 1/2 and width and height and magnet well width and highly identical small magnet are spliced.
See Fig. 4, every block of rotor magnet 1 also can by two width be the magnet well width 1/2 and length and height and magnet slot length and highly identical small magnet 11 are spliced.
See Fig. 5, every block of rotor magnet 1 " also can respectively be 1/2 of the magnet slot length highly identical small magnet 11 with width by four block lengths with magnet groove height " be spliced.
See Fig. 6, every block of rotor magnet 1 " ' also can by two two right-angle sides and highly respectively with the length and width of magnet groove and the leg-of-mutton small magnet 11 that highly equates " ' be spliced.
Above-mentioned small magnet inserts the magnet groove under no magnetic state, can use chemical method to be fixed in the magnet groove before magnetizing or only use the interference fit fixed magnet in the magnet groove.
Brshless DC motor with 4KW is an example, cut apart by magnet, total iron loss of the motor that the magnet that the small magnet that is split to form by the partitioning scheme among above-mentioned Fig. 3-6 is spliced is made has reduced by 10%, 2000～5000 and has changeed and reduced by 5%, 5000 and reduced by 2% more than changeing when 1000～2000 change.Copper loss remains unchanged.
Magnet size reduces because magnet is cut apart afterwards simultaneously, can be so that motor magnet and magnet groove gap reduce 0.01～0.02.
Magnet quantity combination in any can be passed through because magnet is cut apart the different folded height in back, the minimizing of magnet number of molds can be realized.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (6)
1. the built-in magnet permanent magnet machine rotor pole magnet of a compressor, comprise rotor that is provided with the magnet groove and the rotor magnet that inserts in the magnet groove, it is characterized in that, each piece of this rotor magnet is to be spliced by the some small magnets of cutting apart, and each small magnet surface scribbles insulation material layer.
2. the built-in magnet permanent magnet machine rotor pole magnet of compressor according to claim 1, it is characterized in that, described every block of rotor magnet by two or three block lengths be the magnet slot length 1/2 or 1/3 and width is spliced with magnet well width and highly identical small magnet with height.
3. the built-in magnet permanent magnet machine rotor pole magnet of compressor according to claim 1, it is characterized in that, described every block of rotor magnet by two width be the magnet well width 1/2 and length is spliced with magnet slot length and highly identical small magnet with height.
4. the built-in magnet permanent magnet machine rotor pole magnet of compressor according to claim 1, it is characterized in that described every block of rotor magnet respectively is spliced for the 1/2 height small magnet identical with magnet groove height of magnet slot length with width by four block lengths.
5. the built-in magnet permanent magnet machine rotor pole magnet of compressor according to claim 1 is characterized in that, described every block of rotor magnet is by two two right-angle sides and be spliced with the length and width of magnet groove and the leg-of-mutton small magnet that highly equates highly respectively.
6. the built-in magnet permanent magnet machine rotor pole magnet of compressor according to claim 1, it is characterized in that, described small magnet inserts the magnet groove under no magnetic state, can use chemical method to be fixed in the magnet groove before magnetizing or only use the interference fit fixed magnet in the magnet groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200688286U CN201038847Y (en) | 2007-04-10 | 2007-04-10 | Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200688286U CN201038847Y (en) | 2007-04-10 | 2007-04-10 | Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038847Y true CN201038847Y (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200688286U Expired - Lifetime CN201038847Y (en) | 2007-04-10 | 2007-04-10 | Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201038847Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103534901A (en) * | 2011-05-19 | 2014-01-22 | 丰田自动车株式会社 | Method for manufacturing rotor and cutting apparatus |
| CN103683602A (en) * | 2013-12-04 | 2014-03-26 | 安徽巨一自动化装备有限公司 | Permanent magnet motor rotor with low eddy-current loss |
| CN103975513A (en) * | 2011-12-07 | 2014-08-06 | 日产自动车株式会社 | Manufacturing device for magnet for field pole and method for manufacturing same |
| CN108574349A (en) * | 2017-03-08 | 2018-09-25 | Tdk株式会社 | Magnet laminated body and engine |
| CN109962546A (en) * | 2017-12-26 | 2019-07-02 | 丰田自动车株式会社 | Rotor |
| CN110474498A (en) * | 2018-05-10 | 2019-11-19 | 通用电气航空系统有限责任公司 | The component of the increasing material manufacturing of motor |
| CN114448127A (en) * | 2021-12-01 | 2022-05-06 | 广东联塑机器制造有限公司 | Motor rotor permanent magnet structure and permanent magnet synchronous motor |
-
2007
- 2007-04-10 CN CNU2007200688286U patent/CN201038847Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103534901A (en) * | 2011-05-19 | 2014-01-22 | 丰田自动车株式会社 | Method for manufacturing rotor and cutting apparatus |
| CN103534901B (en) * | 2011-05-19 | 2015-12-16 | 丰田自动车株式会社 | The manufacture method of rotor and chopping up apparatus |
| CN103975513A (en) * | 2011-12-07 | 2014-08-06 | 日产自动车株式会社 | Manufacturing device for magnet for field pole and method for manufacturing same |
| CN103683602A (en) * | 2013-12-04 | 2014-03-26 | 安徽巨一自动化装备有限公司 | Permanent magnet motor rotor with low eddy-current loss |
| CN108574349A (en) * | 2017-03-08 | 2018-09-25 | Tdk株式会社 | Magnet laminated body and engine |
| CN109962546A (en) * | 2017-12-26 | 2019-07-02 | 丰田自动车株式会社 | Rotor |
| CN110474498A (en) * | 2018-05-10 | 2019-11-19 | 通用电气航空系统有限责任公司 | The component of the increasing material manufacturing of motor |
| CN114448127A (en) * | 2021-12-01 | 2022-05-06 | 广东联塑机器制造有限公司 | Motor rotor permanent magnet structure and permanent magnet synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080319 |
|
| CX01 | Expiry of patent term |