CN208806668U - motor rotor, motor and air conditioner - Google Patents
motor rotor, motor and air conditioner Download PDFInfo
- Publication number
- CN208806668U CN208806668U CN201821632056.9U CN201821632056U CN208806668U CN 208806668 U CN208806668 U CN 208806668U CN 201821632056 U CN201821632056 U CN 201821632056U CN 208806668 U CN208806668 U CN 208806668U
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- CN
- China
- Prior art keywords
- copper shield
- rotor
- permanent magnet
- rotor according
- shield
- Prior art date
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000010949 copper Substances 0.000 claims abstract description 72
- 229910052802 copper Inorganic materials 0.000 claims abstract description 72
- 239000010410 layer Substances 0.000 claims abstract description 36
- 239000011241 protective layer Substances 0.000 claims abstract description 18
- 230000011218 segmentation Effects 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides an electric motor rotor, motor and air conditioner. The motor rotor comprises a permanent magnet (1), a copper shielding layer (2) and a protective layer (3), wherein the copper shielding layer (2) is sleeved outside the permanent magnet (1), the protective layer (3) is sleeved outside the copper shielding layer (2), and the copper shielding layer (2) is of a sectional structure. According to the utility model discloses an electric motor rotor can reduce the loss of shielding layer itself when realizing the heat transfer of permanent magnet.
Description
Technical field
The utility model belongs to technical field of motors, and in particular to a kind of rotor, motor and air conditioner.
Background technique
It is a variety of that high-speed permanent magnetic synchronous motor has the advantages that power density is big, dynamic response is good and structure is simple etc., has become
For one of the research hotspot in International Power field.But the permanent magnet in rotor generally uses sintered Nd-Fe-B permanent magnetic material,
Due to this permanent-magnet material resistance to compression not tension.There is enough intensity to guarantee permanent magnet at high speeds, generally outside permanent magnet
One layer of highly stressed rotor sheath is wrapped up, rotor jacket and permanent magnet use interference fit to guarantee that permanent magnet is still held at work
By certain compression, to guarantee the safe operation of high-speed motor.
Currently, another then be carbon fiber one is using non-magnetic high duty metal sheath there are two types of common sheaths
Tie up the sheath of binding type.Carbon fibre reinforced composite conductivity is lower, solves using eddy-current loss existing for protective metal shell
Problem, but it can not shield the harmonic field into permanent magnet, therefore a large amount of eddy-current loss can be still generated in permanent magnet.Together
When, carbon fiber is the non-conductor of heat, causes the heat dissipation effect of PM rotor poor, and carbon fiber sheath complex process, cost
Higher, therefore, in industrial application, what is be widely used is non-magnetic conductive metal sheath.However, protective metal shell is conductive material,
Eddy-current loss can be generated under high-frequency electromagnetic field action, sheath is caused to generate heat, and since sheath and rotor permanent magnet are in close contact, shield
Heat in set is easy to transmit to permanent magnet.In addition, general alloy sleeve material electric conductivity is not high, to the screen of harmonic field
The effect of covering is limited, leads to eddy-current loss in permanent magnet or larger.It is excessively high to will lead to permanent magnet temperature rise for factors above when serious
Irreversible demagnetization is generated, so that motor performance decline be made even to damage.Therefore, no matter using which kind of protection sets of plan, all urgently
A kind of method or structure are needed to reduce the temperature rise of rotor permanent magnet.
Currently, reducing high speed rotor loss using the copper shield of high conductivity, it has also become the most popular shielding measure.
But current patent does not refer to the eddy-current loss measure for how reducing copper shield itself.
Existing high speed permanent magnet motor rotor structure, rotor are surface-mounted rotor structure, the most apparent feature of the structure
It is that one layer of very thin copper shield is increased between protective layer and permanent magnetism external surface, the advantage of doing so is that can should be
The eddy-current loss that permanent magnet surfaces generate largely is transferred to metal screen layer sheet, can be from largely reducing permanent magnet
There is a biggish defect in the excessively high problem of local temperature, these patent structures, i.e. the heat of copper shield is excessively high still
Meeting heat is transmitted on magnet steel, and therefore, it is necessary to new structures while realizing the transfer of magnet steel heat, moreover it is possible to reduce shielded layer itself
Loss.
Utility model content
It therefore, can the technical problem to be solved by the present invention is to provide a kind of rotor, motor and air conditioner
While realizing the transfer of permanent magnetism body heat content, the loss of shielded layer itself is reduced.
To solve the above-mentioned problems, the utility model provides a kind of rotor, including permanent magnet, copper shield and protection
Layer, copper shield are set in outside permanent magnet, and protective layer is set in outside copper shield, and copper shield uses segmentation structure.
Preferably, copper shield uses axial segmentation formula structure, and multistage copper shield is arranged along the axially spaced-apart of permanent magnet,
Filled layer is provided between adjacent copper shield.
Preferably, copper shield uses circumferentially segmented formula structure, and multistage copper shield is provided at circumferentially spaced along permanent magnet,
Filled layer is provided between adjacent copper shield.
Preferably, copper shield uses circumferentially segmented formula structure, and multistage copper shield is provided at circumferentially spaced along permanent magnet,
Filled layer is provided between adjacent copper shield.
Preferably, the segments of copper shield is n, wherein n > 2.
It preferably, is clearance fit, transition fit or interference fit between copper shield and permanent magnet.
Preferably, the radial thickness of copper shield is h, wherein 0.03mm ﹤ h ﹤ 1.5mm.
Preferably, the gap between the section and section of copper shield is δ, wherein 0 ﹤ δ ﹤ 1mm.
Preferably, filled layer is epoxy resin.
Preferably, protective layer is made of alloy material or nonmetallic composite.
Preferably, rotor further includes shaft, and permanent magnet is set in outside shaft, and is fixed with shaft gluing.
Another aspect according to the present utility model provides a kind of motor, including rotor, which is above-mentioned
Rotor.
It is according to the present utility model in another aspect, provide a kind of air conditioner, including rotor, which is upper
The rotor stated.
Rotor provided by the utility model, including permanent magnet, copper shield and protective layer, copper shield are set in forever
Outside magnet, protective layer is set in outside copper shield, and copper shield uses segmentation structure.Since copper shield uses segmented
Structure, therefore the electromagnetism harmonic wave into permanent magnet is not only significantly shielded, reduce the eddy-current loss of permanent magnet surfaces, energy
Enough while realizing the transfer of permanent magnetism body heat content, the loss of shielded layer itself is also reduced.
Detailed description of the invention
Fig. 1 is the vertical schematic cross-sectional view of the rotor of the utility model first embodiment；
Fig. 2 is the cross-sectional structure schematic diagram of the rotor of the utility model second embodiment.
Appended drawing reference indicates are as follows:
1, permanent magnet；2, copper shield；3, protective layer；4, filled layer；5, shaft.
Specific embodiment
In conjunction with referring to figure 1 and figure 2, embodiment according to the present utility model, rotor includes permanent magnet 1, copper screen
Layer 2 and protective layer 3 are covered, copper shield 2 is set in outside permanent magnet 1, and protective layer 3 is set in outside copper shield 2, and copper shield 2 is adopted
Use segmentation structure.
Since copper shield uses segmentation structure, the electromagnetism into permanent magnet is not only significantly shielded
Harmonic wave reduces the eddy-current loss of permanent magnet surfaces, can also reduce shielded layer certainly while realizing the transfer of permanent magnetism body heat content
The loss of body.
In one embodiment of the utility model, copper shield 2 uses axial segmentation formula structure, multistage copper shield
2 are arranged along the axially spaced-apart of permanent magnet 1, are provided with filled layer 4 between adjacent copper shield 2.Filled layer uses insulating materials
It is made, therefore can reduce the gap between the copper shield 2 of adjacent segment and the contact stress of protective layer 3, while playing partition
The effect in the vortex circuit between different shielded layers, reduces the eddy-current loss of permanent magnet surfaces, while also reducing shielded layer certainly
The loss of body.
Preferably, filled layer 4 is epoxy resin, can reduce the contact stress herein with protective layer 3, while playing partition
The effect in the vortex circuit between different copper shields.
In second embodiment of the utility model, copper shield 2 uses circumferentially segmented formula structure, multistage copper shield
2 being provided at circumferentially spaced along permanent magnet 1 are provided with filled layer 4 between adjacent copper shield 2.
Circumferentially segmented formula structure is still either used using axial segmentation formula structure, can reduce permanent magnet 1 and
There is remarkable result in terms of the eddy-current loss of copper shield 2 itself.It can also be combined simultaneously using circumferentially segmented and axial segmentation
Copper shield structure uses so that circumferentially segmented and axial segmentation is comprehensive, to play the vortex separated between different shielded layers
The effect in circuit reduces the effect of the eddy-current loss of permanent magnet surfaces.
Preferably, the segments of copper shield 2 is n, wherein n > 2 so that copper shield 2 can have it is enough
Segments plays the role of the vortex circuit between the different shielded layers of significantly more efficient partition.
The radial thickness of copper shield 2 is h, wherein 0.03mm ﹤ h ﹤ 1.5mm.Shielding thickness in a certain range, with
The increase of thickness, decreasing loss effect is more obvious, but thickness is too small (when such as less than 0.03mm), causes the vortex electricity in shielded layer
Close to sharply increase, when thickness is excessive, (when such as larger than 1.5mm), improvement is not further added by, and occupies high-intensitive protective case instead
Space, therefore excessive eddy-current loss is induced in shielded layer in order to prevent, influencing it reduces the effect of rotor eddy current loss,
It is unlikely to influence protective case thickness again, shielding thickness should ensure that certain suitable dimension.Various sizes of shaft, shielded layer have
One preferably Thickness.
Gap between the section and section of copper shield 2 is δ, wherein 0 ﹤ δ ﹤ 1mm.Work when gap delta is mainly processing and fabricating
Epoxide-resin glue is filled in gap primarily to the stress concentration for reducing the protective cases such as carbon fiber in the gap location is asked in skill gap
Topic.
It can be gap-matched between copper shield 2 and permanent magnet 1, transition fit or interference fit, so that copper shield
Good matching relationship is formed between layer 2 and permanent magnet 1.
Protective layer 3 is made of alloy material or nonmetallic composite.3 interference of protective layer acts on copper shield 2
Surface applies a pressing force to permanent magnet 1, plays protection to permanent magnet 1, because being centrifuged masterpiece when preventing its high speed rotation
With and destroy.The nonmetallic composite is, for example, carbon fiber.
Rotor further includes shaft 5, and permanent magnet 1 is set in outside shaft 5, and is fixed with 5 gluing of shaft.
In the present embodiment, permanent magnet is magnet steel, and using neodymium iron boron or samarium-cobalt material, magnet steel is ring structure, interior table
Face is by dedicated magnet steel glue bond in shaft 5.
When carrying out the assembly of rotor, first annular magnetic steel is connected on machine shaft 5 by magnetic steel special gluing, really
Recognizing it will not get loose；The copper shield of radial segments 2 is successively assembled to magnet steel surface later, applies shroud at overlap span
Oxygen resin is to fill gap；Finally, installing protective layer 3 outside copper shield 2 by interference mode.
Embodiment according to the present utility model, motor include rotor, which is above-mentioned rotor.
Embodiment according to the present utility model, air conditioner include rotor, which is above-mentioned rotor.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (13)
1. a kind of rotor, which is characterized in that including permanent magnet (1), copper shield (2) and protective layer (3), the copper shield
Layer (2) is set in the permanent magnet (1) outside, and the protective layer (3) is set in the copper shield (2) outside, the copper shield
(2) segmentation structure is used.
2. rotor according to claim 1, which is characterized in that the copper shield (2) uses axial segmentation formula knot
Structure, copper shield (2) described in multistage is arranged along the axially spaced-apart of the permanent magnet (1), between the adjacent copper shield (2)
It is provided with filled layer (4).
3. rotor according to claim 1, which is characterized in that the copper shield (2) uses circumferentially segmented formula knot
Structure, copper shield (2) being provided at circumferentially spaced along the permanent magnet (1) described in multistage, between the adjacent copper shield (2)
It is provided with filled layer (4).
4. rotor according to claim 2, which is characterized in that the copper shield (2) uses circumferentially segmented formula knot
Structure, copper shield (2) being provided at circumferentially spaced along the permanent magnet (1) described in multistage, between the adjacent copper shield (2)
It is provided with filled layer (4).
5. rotor according to any one of claim 2 to 4, which is characterized in that the segmentation of the copper shield (2)
Number is n, wherein n > 2.
6. rotor according to claim 1, which is characterized in that the copper shield (2) and the permanent magnet (1) it
Between be clearance fit, transition fit or interference fit.
7. rotor according to claim 1, which is characterized in that the radial thickness of the copper shield (2) is h,
Middle 0.03mm ﹤ h ﹤ 1.5mm.
8. rotor according to claim 1, which is characterized in that between the section and section of the copper shield (2)
Gap is δ, wherein 0 ﹤ δ ﹤ 1mm.
9. rotor according to any one of claim 2 to 4, which is characterized in that the filled layer (4) is asphalt mixtures modified by epoxy resin
Rouge.
10. rotor according to claim 1, which is characterized in that the protective layer (3) uses alloy material or non-gold
Belong to composite material to be made.
11. rotor according to any one of claim 1 to 4, which is characterized in that the rotor further includes turning
Axis (5), the permanent magnet (1) are set in the shaft (5) outside, and fix with the shaft (5) gluing.
12. a kind of motor, including rotor, which is characterized in that the rotor is any one of claims 1 to 11 institute
The rotor stated.
13. a kind of air conditioner, including rotor, which is characterized in that the rotor is any one of claims 1 to 11
The rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821632056.9U CN208806668U (en) | 2018-10-08 | 2018-10-08 | motor rotor, motor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821632056.9U CN208806668U (en) | 2018-10-08 | 2018-10-08 | motor rotor, motor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208806668U true CN208806668U (en) | 2019-04-30 |
Family
ID=66237685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821632056.9U Active CN208806668U (en) | 2018-10-08 | 2018-10-08 | motor rotor, motor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208806668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245361A (en) * | 2018-10-08 | 2019-01-18 | 珠海格力电器股份有限公司 | motor rotor, motor and air conditioner |
-
2018
- 2018-10-08 CN CN201821632056.9U patent/CN208806668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245361A (en) * | 2018-10-08 | 2019-01-18 | 珠海格力电器股份有限公司 | motor rotor, motor and air conditioner |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |