CN204761195U - High -speed permanent -magnet machine's of table formula of pasting permanent magnet fixed structure - Google Patents
High -speed permanent -magnet machine's of table formula of pasting permanent magnet fixed structure Download PDFInfo
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- CN204761195U CN204761195U CN201520332065.6U CN201520332065U CN204761195U CN 204761195 U CN204761195 U CN 204761195U CN 201520332065 U CN201520332065 U CN 201520332065U CN 204761195 U CN204761195 U CN 204761195U
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- permanent magnet
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- boss
- permanent
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- 230000001681 protective effect Effects 0.000 claims abstract description 69
- 238000001816 cooling Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a high -speed permanent -magnet machine's of table formula of pasting permanent magnet fixed structure, including protective sheath, permanent magnet, rotor core and pivot, the rotor core suit in the pivot, rotor core's the surface circumference and the internal surface circumference of protective sheath divide equally cloth have with the same boss of motor magnetic pole number, the permanent magnet phase -match of circumference groove between the spacing boss of rotor core surface and tile shape, the circumference inslot between the spacing boss of rotor core is installed to the permanent magnet, the boss on the protective sheath internal surface aligns with the spacing boss on the rotor core surface, protects ways in the surface of permanent magnet to protect the permanent magnet. The utility model discloses temperature when the permanent magnet fixed structure has reduced the protective sheath hot jacket, permanent magnet fixed reliable, the installation is simply convenient, can prevent effectively that motor circumference between permanent magnet and protective sheath when high -speed the operation from removing, the produced reluctance torque of asymmetry of make full use of rotor magnetic circuit improves the power density and the dynamic behavior of motor.
Description
Technical field
The utility model belongs to magneto technical field, is specifically related to a kind of magnet fixing structure of permanent of surface-mount type high-speed permanent magnet motor.
Background technology
In high-speed permanent magnet motor, surface-mount type high-speed permanent magnet motor is the most conventional.The permanent magnet of surface-mount type high-speed permanent magnet motor is generally tile shape, and is affixed on the outer surface of rotor core, and permanent magnet can as a whole structure, also can be formed by multiple magnet combination.Surface-mount type high-speed permanent magnet motor comprises convex type and plug-in type, and its basic structure as shown in Figure 1.By the optimal design to magnet structure, the shape that the air gap magnetic density waveform of Surface Mount convex type high-speed permanent magnet motor is tending towards sinusoidal wave can be made, improve the performance of motor.The reluctance torque that the asymmetry that Surface Mount plug-in type high-speed permanent magnet motor can make full use of rotor magnetic circuit produces, improves the power density of motor, improves the dynamic property of motor.No matter be Surface Mount convex type or Surface Mount plug-in type high-speed permanent magnet motor, on rotor, permanent magnet is fixing most important to the normal operation of high-speed permanent magnet motor.Coming off in running to prevent permanent magnet and protective sleeve, permanent magnet, the mobile phenomenon of circumference between rotor core, needing to fix reliably permanent magnet.The mode that the permanent magnet that current surface-mount type high-speed permanent magnet motor is relatively commonly used is fixed is by high-strength alloy or the composite material protective sleeve hot jacket outer surface at permanent magnet.In order to ensure that rotor is at high-speed rotation, permanent magnet being protected and prevents permanent magnet circumference mobile, circumference occurring mobile between protective sleeve, permanent magnet, rotor core, between claimed cover inner surface and permanent magnet outer surface, the enough large magnitude of interference will be had.
If the magnitude of interference between protective sleeve inner surface and permanent magnet outer surface is too little; rotor is in high-speed rotation; protective sleeve possibly cannot protect that circumference will occur between permanent magnet or protective sleeve, permanent magnet, rotor core is mobile; this not only can affect the reliability of rotor, but also brings many problems can to the control of motor.If the magnitude of interference between protective sleeve inner surface and permanent magnet outer surface is excessive, during hot jacket protective sleeve, the heating-up temperature of protective sleeve is also higher.If the heating-up temperature of protective sleeve is too high; hot jacket process can be caused very difficult on the one hand; the performance of the too high meeting of temperature on permanent magnet of protective sleeve produces certain impact on the other hand, even can cause permanent magnet loss of excitation, permanent magnet also may be made in addition to break.
Summary of the invention
For the above-mentioned technical problem existing for prior art; the utility model provides a kind of magnet fixing structure of permanent of surface-mount type high-speed permanent magnet motor; temperature when can reduce protective sleeve hot jacket, permanent magnet fixing reliable, install simple and convenient; can effectively protect permanent magnet; and can prevent the circumference of motor when high-speed cruising between protective sleeve, permanent magnet, rotor core from moving, improve the reliability of rotor.
A magnet fixing structure of permanent for surface-mount type high-speed permanent magnet motor, comprising: protective sleeve, rotor core, rotating shaft and n block permanent magnet; Wherein:
Described rotor core is set in rotating shaft, and described rotor core exterior surface is circumferentially distributed with n for spacing boss, described protective sleeve inner surface circumferentially also correspondence be distributed with n boss, n is the magnetic shoe number in rotor circumference;
Described permanent magnet be tile shape structure and and circumferential slot on rotor core between adjacent lands match, and be arranged in corresponding circumferential slot;
Described protective sleeve entirety is sheathed on the outer surface of n block permanent magnet, and inside protective sleeve, boss aligns one by one with the boss on rotor core.
Further, described protective sleeve needs high-temperature heating to predetermined temperature, and it is enclosed within the outside of permanent magnet, protects permanent magnet.
Further, circumferential width and the magnet size of described rotor core convex platform match, and radial thickness is determined by the power of motor and dynamic property.
Further; inside described protective sleeve, the circumferential width of boss and magnet size match, radial thickness according between protective sleeve boss internal diameter and rotor core boss external diameter for the principle of matched in clearance, interference fits or the interference fit that is not more than the magnitude of interference between protective sleeve inner surface and permanent magnet outer surface is determined.
Further, described protective sleeve adopts the non-magnetic metal material of high strength, such as: titanium alloy, the non-magnetic steel alloy of high strength etc., or high strength composite, as carbon fiber, glass fibre etc.
Further, the boss of described rotor core is provided with ventilating and cooling groove vertically, form ventilating and cooling passage between the boss inside described ventilating and cooling groove and protective sleeve, the cross section of described ventilating and cooling groove can be triangle, quadrangle or circular arc.
Further, described rotor core and rotating shaft can make the integral type solid construction of iron-core-free with permeability magnetic material.
The advantage of the utility model magnet fixing structure of permanent is: temperature when reducing protective sleeve hot jacket, permanent magnet fixing reliable, install simple and convenient, can effectively protect permanent magnet, and can prevent the circumference of motor when high-speed cruising between protective sleeve, permanent magnet, rotor core from moving, improve the reliability of rotor; The reluctance torque that the asymmetry making full use of rotor magnetic circuit in addition produces, also can improve the power density of motor, improves the dynamic property of motor.
Accompanying drawing explanation
Fig. 1 (a) is the rotor structure schematic diagram of 4 traditional pole Surface Mount convex type high-speed permanent magnet motors.
Fig. 1 (b) is the rotor structure schematic diagram of 4 traditional pole Surface Mount plug-in type high-speed permanent magnet motors.
Fig. 2 is the magnet fixing structure of permanent schematic diagram of the utility model 4 pole surface-mount type high-speed permanent magnet motor.
Fig. 3 is the structural representation of the utility model 4 pole surface-mount type high speed permanent magnet motor rotor upper rotor part iron core.
Fig. 4 is the structural representation of protective sleeve on the surface-mount type high speed permanent magnet motor rotor of the utility model 4 pole.
Fig. 5 is the magnet fixing structure of permanent schematic diagram of the utility model 4 pole with the surface-mount type high-speed permanent magnet motor of ventilating and cooling passage.
Fig. 6 is the structural representation of the utility model 4 pole with the surface-mount type high speed permanent magnet motor rotor iron core of ventilating and cooling passage.
Embodiment
In order to more specifically describe the utility model, below in conjunction with the drawings and the specific embodiments, the technical solution of the utility model is described in detail.
As shown in Fig. 1 (a), 4 traditional pole Surface Mount convex type high-speed permanent magnetic rotor structures, comprise protective sleeve 1, permanent magnet 2, rotor core 3, rotating shaft 4 and non-magnet material every magnetic patch 5.
As shown in Fig. 1 (b), 4 traditional pole Surface Mount plug-in type high-speed permanent magnetic rotor structures, comprise protective sleeve 1, permanent magnet 2, rotor core 3 and rotating shaft 4.The outer surface of rotor core 3 and the inner surface of protective sleeve 1 are the face of cylinder; by selecting the size of the magnitude of interference between protective sleeve inner surface and permanent magnet outer surface, permanent magnet to be protected and to prevent, between the mobile and protective sleeve of permanent magnet circumference, permanent magnet, rotor core, circumference occurs mobile.If the magnitude of interference between protective sleeve 1 inner surface and permanent magnet 2 outer surface is too little; rotor is in high-speed rotation; protective sleeve 1 possibly cannot protect that circumference will occur between permanent magnet 2 or protective sleeve 1, permanent magnet 2, rotor core 3 is mobile; this not only can affect the reliability of rotor, but also brings many problems can to the control of motor.If the magnitude of interference between protective sleeve 1 inner surface and permanent magnet 2 outer surface is larger, during hot jacket protective sleeve 1, the heating-up temperature of protective sleeve 1 is also higher.If the heating-up temperature of protective sleeve 1 is too high; hot jacket process can be caused very difficult on the one hand; the performance of the too high meeting of temperature on permanent magnet of protective sleeve 1 produces certain impact on the other hand, even can cause permanent magnet 2 loss of excitation, permanent magnet 2 also may be made in addition to break.
Embodiment 1
As shown in Figure 2, the fixed structure of the utility model 4 pole surface-mount type high-speed permanent magnet motor permanent magnet, comprises protective sleeve 1, permanent magnet 2, rotor core 3 and rotating shaft 4.The outer surface of rotor core 3 is distributed with the boss identical with motor pole number with on the inner surface of protective sleeve 1.Rotor core 3 is set in rotating shaft 4; circumferential slot between rotor core 3 outer surface circumference positive stop lug boss and the permanent magnet 2 of tile shape match; permanent magnet 2 is arranged in the circumferential slot between rotor core 3 positive stop lug boss; non-magnetic metallic sheath 1 is heated to predetermined temperature; boss on protective sleeve 1 inner surface is alignd with the positive stop lug boss on rotor core 3 outer surface; hot jacket, in the outer surface of permanent magnet 2, is protected permanent magnet 2.
As shown in Figure 3, the outer surface of present embodiment 4 pole surface-mount type high speed permanent magnet motor rotor upper rotor part iron core 3 is evenly distributed with 4 positive stop lug boss, circumferential width and the permanent magnet 2 of rotor core 3 outer surface positive stop lug boss match, and radial thickness is determined according to the power of motor and dynamic property.
As shown in Figure 4; on the surface-mount type high speed permanent magnet motor rotor of present embodiment 4 pole, the inner surface of protective sleeve 1 is evenly distributed with four boss; circumferential width and the permanent magnet 2 of the inner surface boss of protective sleeve 1 match, and determine for the principle of matched in clearance, interference fits and the interference fit that is not more than the magnitude of interference between protective sleeve inner surface and permanent magnet outer surface between the external diameter of radial thickness according to the positive stop lug boss on the internal diameter of the boss on protective sleeve 1 inner surface and rotor core 3 outer surface.The material of protective sleeve 1 is high-strength non-magnetic metal material, such as: titanium alloy, non-magnetic high strength alloy steel etc., or high strength composite, as carbon fiber, glass fibre etc.
Embodiment 2
As shown in Figure 5, the utility model, with the fixed structure of 4 pole surface-mount type high-speed permanent magnet motor permanent magnets of ventilating and cooling passage, comprises protective sleeve 1, permanent magnet 2, rotor core 3 and rotating shaft 4.The outer surface of rotor core 3 is distributed with the boss identical with motor pole number with on the inner surface of protective sleeve 1.The positive stop lug boss of rotor core 3 there is axial ventilating and cooling groove, coordinate with the boss on protective sleeve 1 inner surface, form ventilating and cooling passage.Positive stop lug boss on rotor core 3 outer surface and protective sleeve 1 inner surface convex platform parameter are selected according to mentioned above principle.Rotor core 3 is set in rotating shaft 4; circumferential slot between rotor core 3 outer surface circumference positive stop lug boss and the permanent magnet 2 of tile shape match; permanent magnet 2 is arranged in the circumferential slot between rotor core 3 positive stop lug boss; protective sleeve 1 is heated to predetermined temperature; and the boss on protective sleeve 1 inner surface is alignd with the positive stop lug boss on rotor core 3 outer surface; hot jacket, in the outer surface of permanent magnet 2, is protected permanent magnet 2.
As shown in Figure 6; present embodiment is evenly distributed with 4 positive stop lug boss 6 with the outer surface of 4 pole surface-mount type high speed permanent magnet motor rotor upper rotor part iron cores 3 of ventilating and cooling passage; the positive stop lug boss of rotor core 3 there is axial ventilating and cooling groove; coordinate with protective sleeve 1 inner surface boss; form ventilating and cooling passage; the cross section of ventilating and cooling groove can be triangle, quadrangle, arc etc., and the size of ventilating and cooling passage is determined according to the intensity of rotor core 3 outer face position boss and rotor cooling requirement.
If the rotor of motor adopts solid construction, then just do not have rotor core 3 in above-mentioned execution mode, only have rotating shaft 4, rotating shaft 4 is made with permeability magnetic material, and the effect of rotor core 3 is played in rotating shaft 4 equally, and the rotor core 3 in above-mentioned embodiment becomes rotating shaft 4.
Above-mentioned is can understand for ease of those skilled in the art and apply the utility model to the description of embodiment.Person skilled in the art obviously easily can make various amendment to above-described embodiment, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the utility model is not limited to above-described embodiment, and those skilled in the art are according to announcement of the present utility model, and the improvement made for the utility model and amendment all should within protection ranges of the present utility model.
Claims (8)
1. a magnet fixing structure of permanent for surface-mount type high-speed permanent magnet motor, comprising: protective sleeve, rotor core, rotating shaft and n block permanent magnet; Described rotor core is set in rotating shaft, it is characterized in that:
Described rotor core exterior surface is circumferentially distributed with n for spacing boss, described protective sleeve inner surface circumferentially also correspondence be distributed with n boss, n is the magnetic shoe number in rotor circumference;
Described permanent magnet be tile shape structure and and circumferential slot on rotor core between adjacent lands match, and be arranged in corresponding circumferential slot;
Described protective sleeve entirety is sheathed on the outer surface of n block permanent magnet, and inside protective sleeve, boss aligns one by one with the boss on rotor core.
2. magnet fixing structure of permanent according to claim 1, is characterized in that: described protective sleeve high-temperature heating to predetermined temperature, to protect permanent magnet.
3. magnet fixing structure of permanent according to claim 1, is characterized in that: circumferential width and the magnet size of described rotor core convex platform match, and radial thickness is determined by the power of motor and dynamic property.
4. magnet fixing structure of permanent according to claim 1; it is characterized in that: inside described protective sleeve, the circumferential width of boss and magnet size match, radial thickness according between protective sleeve boss internal diameter and rotor core boss external diameter for the principle of matched in clearance, interference fits or the interference fit that is not more than the magnitude of interference between protective sleeve inner surface and permanent magnet outer surface is determined.
5. magnet fixing structure of permanent according to claim 1, is characterized in that: described protective sleeve adopts the non-magnetic metal material of high strength.
6. magnet fixing structure of permanent according to claim 1, is characterized in that: the boss of described rotor core is provided with ventilating and cooling groove vertically, forms ventilating and cooling passage between the boss inside described ventilating and cooling groove and protective sleeve.
7. magnet fixing structure of permanent according to claim 6, is characterized in that: the cross section of described ventilating and cooling groove is triangle, quadrangle or circular arc.
8. magnet fixing structure of permanent according to claim 1, is characterized in that: described rotor core and rotating shaft adopt permeability magnetic material to make the integral type solid construction of iron-core-free.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332065.6U CN204761195U (en) | 2015-05-21 | 2015-05-21 | High -speed permanent -magnet machine's of table formula of pasting permanent magnet fixed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332065.6U CN204761195U (en) | 2015-05-21 | 2015-05-21 | High -speed permanent -magnet machine's of table formula of pasting permanent magnet fixed structure |
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| CN204761195U true CN204761195U (en) | 2015-11-11 |
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| CN201520332065.6U Active CN204761195U (en) | 2015-05-21 | 2015-05-21 | High -speed permanent -magnet machine's of table formula of pasting permanent magnet fixed structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852495A (en) * | 2015-05-21 | 2015-08-19 | 浙江大学 | Permanent magnet fixing structure of surface-mounted high speed permanent magnet motor |
| CN107634632A (en) * | 2017-10-24 | 2018-01-26 | 江苏大学 | A kind of durface mounted permanent magnet synchronous motor and design method |
-
2015
- 2015-05-21 CN CN201520332065.6U patent/CN204761195U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852495A (en) * | 2015-05-21 | 2015-08-19 | 浙江大学 | Permanent magnet fixing structure of surface-mounted high speed permanent magnet motor |
| CN107634632A (en) * | 2017-10-24 | 2018-01-26 | 江苏大学 | A kind of durface mounted permanent magnet synchronous motor and design method |
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