CN206135583U - Motor rotor and motor - Google Patents
Motor rotor and motor Download PDFInfo
- Publication number
- CN206135583U CN206135583U CN201621099968.5U CN201621099968U CN206135583U CN 206135583 U CN206135583 U CN 206135583U CN 201621099968 U CN201621099968 U CN 201621099968U CN 206135583 U CN206135583 U CN 206135583U
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- CN
- China
- Prior art keywords
- rotor core
- rotor
- permanent magnet
- distance
- motor
- Prior art date
- 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.)
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a motor rotor and motor, it relates to electrical apparatus technical field, and electric motor rotor includes rotor core and sets up permanent magnet in rotor core's the permanent magnet groove, a serial communication port, rotor core has a plurality of outer fringes, the outer fringe have first end and with the second end that first end is relative, the rotatory direction of rotor core is served as reasons second end orientation it is first proper to rotating, first end distance leaves the distance at rotor core center is less than the second end distance leaves distance among the rotor core. The utility model provides a motor rotor and motor can reduce tangential formula electric motor rotor magnetic leakage volume, reduce the iron loss to improve the electric efficiency.
Description
Technical field
This utility model is related to technical field of electric appliances, in particular to a kind of rotor and motor.
Background technology
Fig. 1 is the schematic diagram of tangential rotor magnetic structure in prior art, as shown in figure 1, in tangential rotor magnetic circuit
In structure, permanent magnet effect in parallel has two permanent magnetism body sections to provide per pole magnetic flux air gap, and then can improve air gap flux density,
Especially more project in the case where number of poles is more.But compared to the motor rotor construction of radial, tangential rotor
Have that magnetic flux leakage is big, the defect that iron loss is high.
Utility model content
This utility model aims to provide a kind of rotor that can reduce tangential rotor magnetic flux leakage, reduce iron loss
And motor.
This utility model provides a kind of rotor, including rotor core and is arranged on the permanent magnetism of the rotor core
Permanent magnet in body groove, the rotor core have multiple outer rims, and the outer rim has first end and relative with the first end
The second end, be to be rotated towards first extreme direction by second end in the direction of rotor core rotation, described the
Distance of the one end apart from the rotor core center is less than distance of second end in the rotor core.
Preferably, with the lobe towards the adjacent permanent magnet at second end of the outer rim.
Preferably, distance of the lobe in the tangential direction at the second end of the rotor core less than it is described forever
The half of the width of magnet slot.
Preferably, distance of the lobe in the tangential direction at the second end of the rotor core be equal to it is described forever
The 1/3 of the width of magnet slot.
Preferably, the permanent magnet trough is less than the permanent magnet trough near institute away from the width of the rotor core center
State the width of rotor core center.
Preferably, on the radial cross-section of the rotor core, width of the permanent magnet away from the rotor core center
Degree is less than width of the permanent magnet trough near the rotor core center.
Preferably, the permanent magnet is made up of neodymium iron boron or Ferrite Material.
Preferably, the permanent magnet trough is provided with every bore near rotor internal diameter side.
This utility model provides a kind of motor, including arbitrary described rotor as described above and is set in the motor
Stator outside rotor.
Preferably, the corresponding central angle of the tooth of the stator is α, and what is formed at the first end of the rotor core opens
The corresponding central angle of mouth is β, 0.8 β≤α≤1.2 β.
Preferably, second end of the rotor core is equal to the rotor core with the distance of the inwall of the stator
Distance at maximum outside diameter with the inwall of the positioning, the first end of the rotor core and the inwall of the stator
Distance less than the distance at the rotor core maximum outside diameter with the inwall of the stator.
According to rotor of the present utility model and motor, the first end of the rotor core is apart from the rotor ferrum
The distance at core center is less than distance of second end in the rotor core, so that permanent magnet is near rotor core
The air gap of outer rim one end is little, and the air gap of the other end is big, and the degree of saturation of permanent magnet end position magnetic circuit is reduced, motor
Iron loss is reduced, and then improves electric efficiency.Meanwhile, spacing of the permanent magnet trough away from the rotor core center
Less than the permanent magnet trough near the rotor core center spacing, under identical rotor core external diameter rated condition,
The tangential length of permanent magnet can be increased using said structure, and then increased magnetic flux area, further increase motor output torque
Ability, improves motor performance.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the schematic diagram of tangential rotor magnetic structure in prior art；
Fig. 2 is the structural representation according to rotor of the present utility model；
Fig. 3 is the experimental comparison figure according to motor of the present utility model with the iron loss of motor in prior art；
Fig. 4 is the structural representation according to rotor of the present utility model under another embodiment；
Fig. 5 is the structural representation according to motor of the present utility model.
Description of reference numerals：
10th, rotor core；11st, permanent magnet trough；111st, every bore；12nd, outer rim；121st, first end；122nd, the second end；13、
Lobe；20th, permanent magnet；30th, stator.
Specific embodiment
With reference to the description of accompanying drawing and this utility model specific embodiment, clearly can understand of the present utility model
Details.But, specific embodiment of the present utility model described here is not only used for explaining the purpose of this utility model, and not
Can be understood as by any way being to restriction of the present utility model.Under teaching of the present utility model, technical staff is contemplated that
Based on arbitrarily possible deformation of the present utility model, these are regarded as belonging to scope of the present utility model.Need explanation
It is that, when element is referred to as " being arranged at " another element, it directly on another element or can also can be present placed in the middle
Element.When an element is considered as " connection " another element, it can be directly to another element or can
Can there are centering elements simultaneously.Term " installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be mechanically connected or
Electrical connection, or the connection of two element internals, can be joined directly together, it is also possible to be indirectly connected to by intermediary,
For the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.Below will ginseng
Examine accompanying drawing and in conjunction with the embodiments describing this utility model in detail.
As shown in Fig. 2 according to the structural representation of rotor of the present utility model, in embodiment of the present utility model
A kind of rotor is proposed, rotor includes rotor core 10 and is arranged in the permanent magnet trough 11 of rotor core 10
Permanent magnet 20, rotor core 10 have multiple outer rims 12, and outer rim 12 has first end 121 and relative with first end 121 second
End 122, the direction of the rotation of the rotor core 10 is to be rotated towards 121 direction of the first end by second end 122,
Distance of the first end 121 apart from 10 center of rotor core is less than distance of second end 122 in rotor core 10.
According to rotor of the present utility model and motor, the first end 121 of rotor core 10 is in rotor core 10
The distance of the heart is less than distance of second end 122 in rotor core 10, so that permanent magnet 20 is near rotor core 10
The air gap of 12 one end of outer rim is little, and the air gap of the other end is big, and the degree of saturation of 20 end position magnetic circuit of permanent magnet is reduced, motor
Iron loss reduce, and then improve electric efficiency.According to the reality of the iron loss of motor in motor of the present utility model and prior art
Comparison diagram is tested, as shown in figure 3, Y-axis represents the iron loss of motor in Fig. 3, X-axis express time is turned using motor of the present utility model
Son motor under operation with equal conditions tested using the motor of rotor of the prior art, adopt
The motor of rotor of the prior art iron loss under operation is 15.6W, and adopts motor of the present utility model to turn
The motor iron loss under operation of son is 12.6W, and iron loss reduces about 19%, and electric efficiency improves about 0.6%.
In order to further appreciate that the rotor in this utility model embodiment, which will be further explained below and be said
It is bright.
Rotor core 10 has multiple outer rims 12, and outer rim 12 has first end 121 and second end relative with first end 121
122, rotated from the second end 122 to 121 direction of first end in rotor core 10, first end 121 is apart from 10 center of rotor core
Distance is less than distance of second end 122 apart from 10 center of rotor core.From from the cross section of outer rim 12, the point in outer rim 12 away from
Can be overall in increase trend from first end 121 to the second end 122 with a distance from 10 center of rotor core, according to what is increased
Degree and trend outer rim 12 can take on a different shape, and for example, the shape of outer rim 12 can be by the camber line of two or more
Section is connected to form, it is also possible to be connected to form with straightway by arc.Thus, permanent magnet 20 can be caused near rotor core 10
The air gap of 122 side of the second end of outer rim 12 is little, and the air gap of 121 side of first end is big, and then reduces by 20 end position of permanent magnet
The degree of saturation of magnetic circuit, reduces the iron loss of motor.As 20 end saturation of permanent magnet can cause relevant position appearance larger
Electromagnetic force, causes the vibration noise of motor, using said structure, can weaken the degree of saturation of 20 end of permanent magnet, and then subtract
The vibration noise of small machine.
As shown in Fig. 2 when rotor is from the second end 122 to 121 rotate counterclockwise of first end, D axles can be arranged left
Gas length at 10 outer rim 12 of rotor core of side arranges D axles right from the second end 122 to first end 121 by being gradually reduced greatly
Air gap at 10 outer rim 12 of side rotor core is even air gap, and gas length is equal to most stingy between stator 30 and rotor core 10
Gap length, the gas length at 10 outer rim 12 of rotor core on the left of D axles is more than the gas at 10 outer rim 12 of D axle right rotors iron core
Gap length.In motor operating state, increase magnetic action as quadrature axis armature reaction is risen to the front half-shadow of main field, rear half-shadow is risen
Demagnetizing effect, therefore front half-shadow, using the larger magnetic circuit part of air gap, rear half-shadow adopts the less magnetic circuit part of air gap, Ke Yi
Ensure the performance of the power output of motor while reducing motor iron loss.
In one preferred embodiment, as shown in Fig. 2 at the second end 122 of outer rim 12 with towards it is adjacent forever
The lobe 13 of magnet 20.As permanent magnet 20 can be subject to centrifugal forces when rotor rotates, in 11 correspondence of permanent magnet trough
10 outer rim 12 of rotor core the second end 122 the lobe 13 that arranges of side can be used for it is to permanent magnet 20 and then fixed,
And then permanent magnet 20 is prevented due to being flown out by centrifugal force.Lobe 13 is tangential at the second end 122 of rotor core 10
Half of the distance on direction less than the width of permanent magnet trough 11.In an embodiment being more highly preferred to, lobe 13 exists
1/3 of the width b that permanent magnet trough 11 is equal to apart from a in tangential direction at second end 122 of rotor core 10, thus, i.e.
Can ensure that the reliability of motor operation, it can also be ensured that the performance of motor.
In one preferred embodiment, the knot according to rotor of the present utility model under another embodiment
Structure schematic diagram, as shown in figure 4, permanent magnet trough 11 is smaller than permanent magnet trough 11 near rotor away from 10 center of rotor core
The spacing of 10 center of iron core.And say, the shape of permanent magnet trough 11 substantially can be with trapezoidal.It is arranged in permanent magnet trough 11
The shape of permanent magnet 20 needs to be engaged with permanent magnet trough 11, thus, permanent magnet 20 can also be following shape, i.e. permanent magnet 20
Substantially can be with trapezoidal, its bottom and upper segment can not be straight line.On the radial cross-section of rotor core 10, permanent magnet 20 is remote
Width from 10 center of rotor core is less than width of the permanent magnet trough 11 near 10 center of rotor core.Due to permanent magnet 20
Trapezoidal structure, in motor high-speed rotation, even if rotor does not do any safeguard procedures, permanent magnet 20 is still fixed in forever
In magnet slot 11, be not in destruction or the danger for flying out.Under the conditions of the external diameter identical of rotor core 10, with employing outside
At second end 122 of edge 12, the mode with the lobe 13 towards adjacent permanent magnet 20 is compared, using the sheet of trapezium structure
Mode can increase by 20 radical length of permanent magnet, also increase magnetic flux area, further increase the torque energy of motor output
Power, improves the performance of motor.In general, permanent magnet 20 can be made up of neodymium iron boron or Ferrite Material, it is also possible to by which
He makes permanent magnet material.
In one preferred embodiment, permanent magnet trough 11 is provided with every bore near 10 internal diameter side of rotor core
111.Each permanent magnet trough 11 can be both provided with every bore 111 on the both sides of 10 internal diameter side of rotor core, every bore 111
Axis direction along rotor core 10 runs through rotor core 10.What is arranged can effectively optimize magnetic circuit every bore 111, improve motor
Rotor and electric efficiency, are conducive to the even running of motor, reduce noise.
According to the structural representation of motor of the present utility model, as shown in figure 5, this utility model additionally provides a kind of electricity
Machine, including rotor arbitrary as described above and the stator 30 being set in outside rotor.The corresponding central angle of tooth of stator 30
For α, the corresponding central angle of opening formed at the first end 121 of rotor core 10 is that β, α and β meet 0.8 β≤α≤1.2 β's
Under the conditions of when, can effectively reduce the iron loss of motor, improve the output torque of motor.When β and α is roughly equal, the property of motor
State can be optimal.Further, since the structure of rotor core 10 causes the second end 122 of rotor core 10 interior with stator 30
The distance of wall is equal to the distance at 10 maximum outside diameter of rotor core with the inwall of positioning, the first end 121 of rotor core 10 with it is fixed
The distance of the inwall of son 30 is less than the distance at 10 maximum outside diameter of rotor core with the inwall of stator.
As can be seen from the above description, this utility model the above embodiments realize following technique effect：
According to of the present utility model, the first end 121 of rotor core 10 apart from 10 center of rotor core distance less than the
Distance of two ends 122 in rotor core 10, so that gas of the permanent magnet 20 near 10 outer rim of rotor core, 12 one end
Gap is little, and the air gap of the other end is big, and the degree of saturation of 20 end position magnetic circuit of permanent magnet is reduced, and the iron loss of motor is subtracted
It is little, and then improve electric efficiency.As 20 end saturation of permanent magnet can cause relevant position larger electromagnetic force occur, cause
The vibration noise of motor, using said structure, can weaken the degree of saturation of 20 end of permanent magnet, and then reduce the vibration of motor
Noise.
Meanwhile, using at the second end 122 of outer rim 12 with the lobe 13 or permanent magnet towards adjacent permanent magnet 20
Groove 11 is smaller than mode of the permanent magnet trough 11 near the spacing of 10 center of rotor core away from 10 center of rotor core
It is to permanent magnet 20 and then fixed, and then permanent magnet 20 is prevented due to being flown out by centrifugal force.Outside identical rotor core 10
Under the rated condition of footpath, permanent magnet trough 11 is smaller than near rotor ferrum away from 10 center of rotor core using permanent magnet trough 11
The mode of the spacing of 10 center of core can also increase by 20 tangential length of permanent magnet, and then increased magnetic flux area, further increase
Plus motor output torque ability, improve motor performance.The corresponding central angle of tooth of stator 30 is the first of α and rotor core 10
When holding the corresponding central angle of opening formed at 121 certain condition to be met for β, can effectively reduce the iron loss of motor, improve electricity
The output torque of machine.
Preferred embodiment of the present utility model is these are only, this utility model is not limited to, for this area
Technical staff for, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within,
Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.
Claims (11)
1. a kind of rotor, including rotor core (10) and it is arranged in the permanent magnet trough (11) of the rotor core (10)
Permanent magnet (20), it is characterised in that with multiple outer rims (12), the outer rim (12) is with first for the rotor core (10)
End (121) and second end (122) relative with the first end (121), the direction that the rotor core (10) rotates is by institute
State the second end (122) to be rotated towards the first end (121) direction, the first end (121) is apart from the rotor core
(10) distance at center is less than distance of second end (122) apart from the rotor core (10) center.
2. rotor according to claim 1, it is characterised in that the second end (122) place of the outer rim (12)
With the lobe (13) towards the adjacent permanent magnet (20).
3. rotor according to claim 2, it is characterised in that the lobe (13) is in the rotor core (10)
The second end (122) place tangential direction on distance less than the permanent magnet trough (11) width half.
4. rotor according to claim 3, it is characterised in that the lobe (13) is in the rotor core (10)
The second end (122) place tangential direction on distance be equal to the permanent magnet trough (11) width 1/3.
5. rotor according to claim 1, it is characterised in that the permanent magnet trough (11) is away from the rotor core
(10) width of the width of center less than the close rotor core (10) center of the permanent magnet trough (11).
6. rotor according to claim 1, it is characterised in that in the radial cross-section of the rotor core (10)
On, the permanent magnet (20) is close less than the permanent magnet trough (11) described away from the width of the rotor core (10) center
The width of rotor core (10) center.
7. rotor according to claim 1, it is characterised in that the permanent magnet (20) is by neodymium iron boron or ferrite material
Material is made.
8. rotor according to claim 1, it is characterised in that the permanent magnet trough (11) is near the rotor core
(10) internal diameter side is provided with every bore (111).
9. a kind of motor, it is characterised in that include the rotor as described in claim 1 to 8 is arbitrary and be set in the electricity
Stator (30) outside machine rotor.
10. motor according to claim 9, it is characterised in that the corresponding central angle of tooth of the stator (30) is α, institute
The corresponding central angle of opening for stating the first end (121) the place formation of rotor core (10) is β, 0.8 β≤α≤1.2 β.
11. motors according to claim 9, it is characterised in that second end (122) of the rotor core (10) with
The distance of the inwall of the stator (30) is equal at the rotor core (10) maximum outside diameter described interior with the stator (30)
The distance of wall, the first end (121) of the rotor core (10) is with the distance of the inwall of the stator (30) less than described
Distance at rotor core (10) maximum outside diameter with the inwall of the stator (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621099968.5U CN206135583U (en) | 2016-09-29 | 2016-09-29 | Motor rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621099968.5U CN206135583U (en) | 2016-09-29 | 2016-09-29 | Motor rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135583U true CN206135583U (en) | 2017-04-26 |
Family
ID=58571123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621099968.5U Expired - Fee Related CN206135583U (en) | 2016-09-29 | 2016-09-29 | Motor rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357027A (en) * | 2016-09-29 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and motor |
-
2016
- 2016-09-29 CN CN201621099968.5U patent/CN206135583U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357027A (en) * | 2016-09-29 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 |