CN108923558A - Rotor and magneto - Google Patents
Rotor and magneto Download PDFInfo
- Publication number
- CN108923558A CN108923558A CN201810930685.8A CN201810930685A CN108923558A CN 108923558 A CN108923558 A CN 108923558A CN 201810930685 A CN201810930685 A CN 201810930685A CN 108923558 A CN108923558 A CN 108923558A
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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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
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- 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)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of rotor and magneto.The rotor includes rotor core (1), rotor core (1) is circumferentially arranged multiple permanent magnet troughs (2), permanent magnet (3) are provided in permanent magnet trough (2), magnet isolation tank (4) are provided on the inside of permanent magnet trough (2), it is arranged at intervals between two adjacent magnet isolation tanks (4) every bore (5), magnet isolation tank (4) and formation fold-line-shaped or curved magnetic bridge (6) between bore (5).Rotor according to the present invention can effectively improve magnetism isolating effect, reduce leakage field on the inside of rotor, promote the saturation degree that magnetizes of permanent magnet in rotor, promote motor performance.
Description
Technical field
The invention belongs to technical field of motors, and in particular to a kind of rotor and magneto.
Background technique
The motor of the tangential magnetization configuration of permanent magnet can be produced due to having " poly- magnetic " effect compared with permanent magnet diametrical magnetization motor
Raw higher air gap flux density is applied more and more so that motor has biggish torque/electric current ratio and torque/volume ratio
In occasions such as servo-system, electric propulsion, office automation, household electrical appliance.
For the tangential permanent magnet motor of the prior art since rotor permanent magnet is radial arrangement, permanent magnet is a part of buried in rotor
External magnetic field is applied on rotor by inside, and when magnetizing to rotor permanent magnet, magnetism guiding access to magnetize on the inside of permanent magnet
Magnetic field hardly enters part of the rotor close to shaft, and permanent magnet can not magnetize close to the part of shaft reaches saturation state, is easy
Lead to that motor performance declines or even permanent magnet loss of excitation, motor can not operate.
Summary of the invention
Therefore, it the technical problem to be solved in the present invention is that providing a kind of rotor and magneto, can effectively mention
High magnetism isolating effect reduces leakage field on the inside of rotor, promotes the saturation degree that magnetizes of permanent magnet in rotor, promotes motor
Energy.
To solve the above-mentioned problems, the present invention provides a kind of rotor, including rotor core, and rotor core is circumferentially set
Multiple permanent magnet troughs are equipped with, permanent magnet is provided in permanent magnet trough, are provided with magnet isolation tank on the inside of permanent magnet trough, adjacent two
It is arranged at intervals between magnet isolation tank every bore, magnet isolation tank and formation fold-line-shaped or curved magnetic bridge between bore.
Preferably, magnetic bridge is serrated.
Preferably, symmetrical about pole center line every bore.
Preferably, along radial direction, the width of magnet isolation tank is to successively decrease from centre to both ends.
It preferably, is to be incremented by from centre to both ends every the width of bore along radial direction.
Preferably, the widest part of magnet isolation tank is corresponded to every the most narrow place of bore.
Preferably, the maximum width of magnet isolation tank is I, and the width of permanent magnet trough is B, wherein I > B.
Preferably, the radial width of magnet isolation tank is C, and the outer radius of rotor core is R1, wherein the ratio of C/R1 meet with
Lower relationship：
0.06≥C/R1≥0.03。
It preferably, is G every the minimum widith of bore, the minimum widith between two adjacent magnet isolation tanks is H, wherein G/H
Ratio should meet following relationship：
0.6≥G/H≥0.2。
Preferably, the minimum widith of magnet isolation tank is J, and the maximum width of magnet isolation tank is I, and the ratio of I/J should meet with ShiShimonoseki
System：
2≥I/J≥1。
Preferably, the thickness of magnetic bridge is uniform, magnetic bridge with a thickness of Z, the air gap One-sided Widths of motor are δ, the ratio of Z/ δ
Value should meet following relationship：
1.8≥Z/δ≥0.8。
Preferably, along radial direction, the width of magnet isolation tank is to be incremented by from centre to both ends.
It preferably, is to successively decrease from centre to both ends every the width of bore along radial direction.
Preferably, the angle between the radial outside edge of magnet isolation tank flanging adjacent thereto is A, pole center line and its phase
Angle between the radial centre lines of adjacent permanent magnet trough is E, and the ratio of A/E should meet following relationship：
2≥A/E≥0.9。
Preferably, every the section of bore be round or diamond shape.
Preferably, rotor core includes shaft hole, and the circumferential both ends of magnet isolation tank are respectively formed the first toothed edge, corresponding every bore
Magnet isolation tank forms the second toothed edge at circumferential both ends, and the first toothed edge and the second toothed edge are meshed.
Preferably, from outside to inside along radial direction, the width of magnet isolation tank is followed successively by successively decrease-being incremented by-successively decrease.
Preferably, the narrowest part of magnet isolation tank is arranged close to shaft hole, from outside to inside along radial direction, the receipts of magnet isolation tank
The width at narrow place is followed successively by X, Y, and the width of permanent magnet trough is B, wherein：
0.95 >=X/B >=0.65,0.8 >=Y/B >=0.3.
Preferably, from outside to inside along radial direction, incremental-successively decreasing-is followed successively by every the width of bore to be incremented by.
Preferably, it is M every the most narrow width of bore, magnet isolation tank and forms magnetic bridge every bore, thickness is not everywhere for magnetic bridge
Uniformly, the most narrow width of magnetic bridge is O, and the ratio of M/O should meet following relationship：
3≥M/O≥0.8。
Preferably, magnetic bridge have two sections bending, the thickness of magnetic bridge is uniform, magnetic bridge with a thickness of Z, the air gap of motor
One-sided Widths be set as δ, the ratio of Z/ δ should meet following relationship：
2.2≥Z/δ≥1。
Preferably, it is formed by magnetic bridge between bore and magnet isolation tank and is provided with corner cut at crooked place, at corner cut
Magnetic bridge minimum widith be P, magnetic bridge with a thickness of L, the ratio of P/L should meet following relationship：
1.5≥P/L≥1。
Preferably, from outside to inside along radial direction, the width of magnet isolation tank is followed successively by successively decrease-being incremented by-successively decrease-being incremented by-pass
Subtract, along close to the direction of shaft hole, the width of the constriction of magnet isolation tank successively decreases.
Preferably, width of the magnet isolation tank far from shaft hole one end is Q, along close to the direction of shaft hole, the receipts of magnet isolation tank
Width at narrow position is followed successively by S, T, U, and S > T > U, wherein the ratio of U/Q should meet following relationship：
0.3≥U/Q≥0.2。
Preferably, from outside to inside along radial direction, it is followed successively by incremental-successively decreasing-every the width of bore it is incremented by-successively decreasing-and passs
Increase, the direction every bore close to the end face of shaft hole away from shaft hole is recessed.
Preferably, magnetic bridge includes four sections of bendings, and magnetic bridge everywhere of different size, the width at the most narrow place of magnetic bridge is
W, the width of the widest part of magnetic bridge are V, W=(0.7~0.8) V, and the width of air gap is set as δ, and the ratio of W/ δ should meet following
Relationship：1.6≥W/δ≥1.
Preferably, the peripheral side of rotor core is arranged with non-magnetic fastening sheath.
Preferably, magnet isolation tank and/or every being provided with non-magnetic reinforcing rod in bore.
Preferably, the outer surface of reinforcing rod is in contact or the shape of reinforcing rod and magnet isolation tank with the inner surface of magnet isolation tank
Shape matches；And/or
The outer surface of reinforcing rod is in contact with the inner surface every bore or the shape of reinforcing rod and shape phase every bore
Match.
Preferably, magnet isolation tank and/or every being filled with un-conducted magnetic material in bore.
It preferably, is at least two every bore, at least two are successively spaced setting along the radial direction of rotor core every bore, and
It cooperates with magnet isolation tank, forms the magnetic bridge of fold-line-shaped.
Preferably, magnetic bridge is curved shape.
Preferably, it is equipped with permanent magnet in each permanent magnet trough, permanent magnet tangentially magnetizes, two adjacent permanent magnet polarities
Repel each other setting.
According to another aspect of the present invention, a kind of magneto, including rotor are provided, which is above-mentioned
Rotor.
Rotor provided by the invention, including rotor core, rotor core is circumferentially arranged multiple permanent magnet troughs, forever
It is provided with permanent magnet in magnet slot, magnet isolation tank is provided on the inside of permanent magnet trough, is spaced setting between two adjacent magnet isolation tanks
Have every bore, magnet isolation tank and formation fold-line-shaped or curved magnetic bridge between bore.By magnet isolation tank and every bore it
Between form fold-line-shaped or curved magnetic bridge, the length of magnetic bridge can be increased, to improve the magnetic of magnetic circuit on the inside of permanent magnet
Resistance improves magnetism isolating effect, reduces leakage field on the inside of tangential permanent magnetic motor, promotes the saturation degree that magnetizes of rotor permanent magnet, promotes electricity
The efficiency of machine and anti-demagnetization capability promote motor performance, reduce motor cost.
Detailed description of the invention
Fig. 1 is the dimensional structure schematic diagram of the rotor of the embodiment of the present invention；
Fig. 2 is another dimensional structure schematic diagram of the rotor of the embodiment of the present invention；
Fig. 3 is the magnetic structure figure of the rotor of the embodiment of the present invention；
Fig. 4 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Fig. 5 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Fig. 6 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Fig. 7 is the magnetic structure figure of the rotor of another embodiment of the present invention；
Fig. 8 is another dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Fig. 9 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Figure 10 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 11 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 12 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Figure 13 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 14 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 15 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 16 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 17 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 18 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 19 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Figure 20 is variation relation curve synoptic diagram of the magnetic linkage of the present invention with A/E.
Appended drawing reference is expressed as：
1, rotor core；2, permanent magnet trough；3, permanent magnet；4, magnet isolation tank；5, every bore；6, magnetic bridge；7, shaft hole；8,
Fastening sheath；9, reinforcing rod；10, it is open；11, corner cut.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to 20, according to an embodiment of the invention, rotor includes rotor core 1, rotor core
1 it is circumferentially arranged have multiple permanent magnet troughs 2, permanent magnet 3 is provided in permanent magnet trough 2, the inside of permanent magnet trough 2 is provided with every magnetic
Slot 4 is arranged at intervals between two adjacent magnet isolation tanks 4 every bore 5, magnet isolation tank 4 and forms between bore 5 fold-line-shaped or song
Linear magnetic bridge 6.Preferably, permanent magnet 3 is equipped in each permanent magnet trough 2, permanent magnet 3 tangentially magnetizes, and adjacent two
The setting of 3 polar repulsion of permanent magnet.
By forming fold-line-shaped or curved magnetic bridge 6 in magnet isolation tank 4 and between bore 5, magnetic bridge 6 can be increased
Length improve magnetism isolating effect to improve the magnetic resistance of 3 inside magnetic circuit of permanent magnet, reduce leakage field on the inside of tangential permanent magnetic motor,
Promoted rotor permanent magnet the saturation degree that magnetizes, promoted motor efficiency and anti-demagnetization capability, promoted motor performance, reduce motor at
This.
In the present embodiment, permanent magnet 3 is evenly distributed on rotor core 1 along circumferential direction, and the quantity of permanent magnet 3 is
N number of, wherein N is the even number more than or equal to 4, and each permanent magnet 3 is being positioned radially along rotor core, and permanent magnet 3 is edge
Tangential magnetization, the adjacent polarity having the same of two permanent magnets 3 are oppositely arranged.There are shaft hole 7, permanent magnetism on the inside of rotor core 1
Body slot 2 is known as the inside of permanent magnet trough 2 close to the radially inner side of shaft hole 7, and the radial outside close to rotor outer circle is known as permanent magnetism
The outside of body slot 2, rotor core 1 are an integral structure, and have a dowel between shaft hole 7 on the inside of permanent magnet trough.
Magnet isolation tank 4 and between bore 5 formed fold-line-shaped magnetic bridge 6 after, tangential motor is when magnetizing, permanent magnet trough 2
Radially inner side constitutes magnetism guiding access close to the rotor core of central rotating shaft, and the magnetic line of force is closed from this magnetism guiding access, so that the magnetic line of force
Permanent magnet 3 more difficult to get access forms leakage magnetic flux Φ σ close to the inner side of central rotating shaft.It is arranged in 3 inside bottom of permanent magnet every magnetic
Slot can increase the magnetic resistance of permanent magnet trough bottom passageway, reduce the magnetic line of force that magnetic field of magnetizing is closed here, promote the magnetic line of force
Into the bottom of permanent magnet 3, to improve the saturation degree that magnetizes of rotor permanent magnet, while can reduce close to rotor center axis
Permanent magnet brow leakage, and then improve motor magnetic linkage, promote the performance of motor.
Opening 10 is offered far from the radial outside of shaft hole 7 in permanent magnet trough 2, the opening 10 is from permanent magnet trough 2 along diameter
To rotor core 1 is run through outward, the leakage field of 3 radial outside of permanent magnet can be further decreased, improves air gap flux density, improves motor
Efficiency.
Preferably, magnetic bridge 6 is serrated, and bends magnetic bridge 6, to effectively increase the length of magnetic bridge 6, increase every
Magnetic effect reduces the leakage magnetic flux being closed from magnetic bridge 6, while two jagged magnetic bridges 6 are formed under each magnetic pole of rotor, protects
Demonstrate,prove the bonding strength between rotor core 1 and dowel.
Preferably, symmetrical about pole center line every bore 5, it can guarantee 4 phase of magnet isolation tank every bore 5 and circumferential two sides
Cooperation, can form mutually isostructural magnetic bridge 6, to guarantee the consistency of magnetic bridge structure, so that motor is in permanent magnet 3
The magnetic circuit of side can be uniformly distributed along circumferential direction, guarantee it is every extremely under the permanent magnet saturation degree that magnetizes it is consistent, guarantee moving back for motor
Magnetic energy power improves electric efficiency.
In the present embodiment, along radial direction, the width of magnet isolation tank 4 is to successively decrease from centre to both ends.
It is to be incremented by from centre to both ends every the width of bore 5 along radial direction.
Correspond to the widest part of magnet isolation tank 4 every the most narrow place of bore 5, so as to guarantee the width of magnetic bridge 6, and more
Add and easily forms fold-line-shaped or curved magnetic bridge 6.
Preferably, the maximum width of magnet isolation tank 4 is I, and the width of permanent magnet trough 2 is B, wherein I > B, and such mode can be with
So that the magnetic bridge 6 of 3 two sides of permanent magnet is farther apart, it is further reduced the magnetic line of force being closed from magnetic bridge 6, improves permanent magnet 3
The saturation degree that magnetizes.
Preferably, the radial width of magnet isolation tank 4 is C, and the outer radius of rotor core 1 is R1, and wherein the ratio of C/R1 meets
Following relationship：0.06≥C/R1≥0.03.Magnet isolation tank 4 is located at the position of 2 inside bottom of permanent magnet trough, magnet isolation tank 4 and shaft hole 7
Between there are one section of pre-determined distance, after being arranged shaft in shaft hole 7, rotor core 1 rotates under the drive of shaft, meeting
Acted on by centrifugal force, therefore herein cannot be too narrow, C/R1 >=0.03 need to be made, but herein can not be too wide, otherwise magnet isolation tank 4 every
Magnetic effect can be deteriorated, and cannot play the role of promoting permanent magnet and magnetize saturation degree, so C/R1≤0.06.
It is G every the minimum widith of bore 5, the minimum widith between two adjacent magnet isolation tanks 4 is H, wherein the ratio of G/H
Following relationship should be met：0.6≥G/H≥0.2.
If the ratio of the minimum widith between the minimum widith and two adjacent magnet isolation tanks 4 of bore 5 is less than 0.2, meeting
So that the distance of two magnetic bridges 6 is close, magnetism isolating effect is reduced, increases leakage field, as 0.6 >=G/H >=0.2, promotes magnetic bridge
Magnetism isolating effect, promote magnetic field of magnetizing and enter the magnetic line of force of permanent magnet bottom, promotion is magnetized saturation degree, is promoted motor magnetic linkage, is mentioned
Lifting motor efficiency.
The minimum widith of magnet isolation tank 4 is J, and the maximum width of magnet isolation tank 4 is I, and the ratio of I/J should meet following relationship：2≥
I/J≥1.About 4 width of magnet isolation tank can be inconsistent, such as is set as both ends thickness, and intermediate thin, magnetic bridge 6 serves as rotor core 1
Dowel, the width of 4 wider portion of magnet isolation tank is set as 2 times of the width of narrower part, can increase the thickness at 6 both ends of magnetic bridge
Degree, can be improved the bonding strength at dowel.
The thickness of magnetic bridge 6 can be uniformly arranged.When the thickness of magnetic bridge 6 is uniform, magnetic bridge 6 with a thickness of K, electricity
The air gap One-sided Widths of machine are δ, and the ratio of K/ δ should meet following relationship：1.8≥K/δ≥0.8.Magnetic bridge 6 cannot be too narrow, no
It can then reduce bonding strength herein, when rotor high-speed cruising, cause bridge to be broken, rotor is caused to fly out, cause danger, therefore K/ δ
>=0.8, the thickness of magnetic bridge 6 is uniform, can promote magnetism isolating effect, promotes the saturation degree that magnetizes, while reducing the leakage of permanent magnet end
Magnetic promotes electric efficiency, also reduces demagnetization risk when motor operation.
In conjunction with referring to fig. 4 and shown in Fig. 5, in other embodiment, along radial direction, the width of magnet isolation tank 4 is
It is incremented by from centre to both ends；It is to successively decrease from centre to both ends every the width of bore 5.
Angle between the radial outside edge of magnet isolation tank 4 flanging adjacent thereto is A, and pole center line is adjacent thereto forever
Angle between the radial centre lines of magnet slot 2 is E, and the ratio of A/E should meet following relationship：2≥A/E≥0.9.
Since the width of magnet isolation tank 4 is to be incremented by from centre to both ends, along the direction far from permanent magnet trough 2, every magnetic
The width of slot 4 successively decreases, therefore can be formed and be fixed to permanent magnet 3 by the tapered configuration of magnet isolation tank 4, effectively prevent permanent magnetism
Play occurs for body 3.
The wide centre in the two sides of magnet isolation tank 4 is narrow, and the narrower part of magnet isolation tank 4 is inwardly excessive from permanent magnet trough bottom, can be with
Fixed magnet steel, prevents magnet steel radial-play, as shown in figure 20, limits 2 >=A/E >=0.9, too small to make because bent angle cannot be too small
The magnetic line of force that must magnetize easily is closed from the relatively narrow part of magnet isolation tank 4, reduces the magnetic line of force for entering permanent magnet, reduces motor magnetic linkage, and
Bent angle cannot be too big, otherwise the length of magnetic bridge 6 can be made to shorten, and reduces magnetism isolating effect, reduces permanent magnet and magnetizes saturation degree, reduces
Motor magnetic linkage reduces electric efficiency.
Preferably, every the section of bore 5 be round or diamond shape, or other structures for meeting above-mentioned restriction.
By be arranged this kind of shape every bore 5, be capable of increasing the distance between two magnetic bridges 6, further promoted every
Magnetic effect reduces the leakage field of permanent magnet bottom, promotes permanent magnet and magnetizes saturation degree.
The circumferential both ends of magnet isolation tank 4 are respectively formed the first toothed edge, form the at circumferential both ends every the corresponding magnet isolation tank 4 of bore 5
Two toothed edges, the first toothed edge and the second toothed edge are meshed.Magnet isolation tank 4 is meshed with the tooth every bore 5, i.e. magnet isolation tank 4
Tooth convex portion and the mark of mouth concave portion split-phase pair every bore 5, the tooth depressed section of magnet isolation tank 4 and the tooth convex portion every bore 5
Relatively, so that forming magnetic bridge 6 between bore 5 and the magnet isolation tank 4 of its circumferential two sides, two magnetic bridges 6 are about pole center
Line is symmetrical, and magnetic bridge 6 is bent, and the length of magnetic bridge 6 can be made longer, increases magnetism isolating effect, reduces and is closed from magnetic bridge 6
Leakage magnetic circuit, increase enter 3 bottom of permanent magnet the magnetic line of force, improve permanent magnet 3 the saturation degree that magnetizes, improve electric efficiency.
Preferably, from outside to inside along radial direction, the width of magnet isolation tank 4 is followed successively by successively decrease-being incremented by-successively decrease.This kind every
Magnetic slot 4 can form two sawtooth in circumferential both sides of the edge, on the one hand can be with fixed permanent magnet 3, on the other hand can be further
Increase the length of magnetic bridge 6, promote magnetism isolating effect, promote the magnetic line of force that magnetic field of magnetizing enters rotor permanent magnet bottom, is promoted forever
The saturation degree that magnetizes of magnet 3.
The narrowest part of magnet isolation tank 4 is arranged close to shaft hole 7, from outside to inside along radial direction, the narrowed place of magnet isolation tank 4
Width be followed successively by X, Y, the width of permanent magnet trough 2 is B, wherein：0.95 >=X/B >=0.65,0.8 >=Y/B >=0.3.Magnet isolation tank 4
The width of narrower part determine the area of magnet isolation tank 4, also determine between the two sides magnetic bridge 6 of permanent magnet bottom away from
From, the width of narrower part cannot be narrow, and otherwise magnetism isolating effect can be deteriorated, by verifying, as 0.95 >=X/B >=0.65,0.8 >=
When Y/B >=0.3, motor magnetism isolating effect can be promoted, reduces the brow leakage of permanent magnet bottom.
Preferably radially direction from outside to inside ,-successively decreasing-is followed successively by incremental every the width of bore 5 and is incremented by.This kind is every magnetic
Slot 4 can form two sawtooth in circumferential both sides of the edge, can preferably cooperate with magnet isolation tank 4, further increase magnetic bridge 6
Length further promotes magnetism isolating effect, further promotes the magnetic line of force that magnetic field of magnetizing enters rotor permanent magnet bottom, further mentions
Rise the saturation degree that magnetizes of permanent magnet 3.
Magnetic bridge 6 has two sections of bendings, in uneven thickness, narrow on the outside of rotor and on the inside of shaft, the centre of magnetic bridge 6
Width passes through in the access that the magnetic line of force is formed through the magnetic bridge 6 of permanent magnet two sides that can preferably stop to magnetize.Preferably, every magnetic
Slot 4 and every bore 5 formed magnetic bridge 6, magnetic bridge 6 is in uneven thickness everywhere, every bore 5 most narrow width be M, magnetic bridge 6
Most narrow width is O, and the ratio of M/O should meet following relationship：3≥M/O≥0.8.More every the wider magnetism isolating effect of the width of bore 5
Good, the narrower magnetism isolating effect of magnetic bridge 6 is better, but magnetic bridge 6 cannot be narrow, and too narrow rotor strength can reduce, can not every bore 5
Too wide, otherwise the area of magnet isolation tank 4 can become smaller, and magnetism isolating effect can be deteriorated instead, therefore as 3 >=M/O >=0.8, magnetism isolating effect is most
Good, the saturation degree highest that magnetizes of permanent magnet 3 promotes motor magnetic linkage, promotes electric efficiency.
Preferably, magnetic bridge 6 has two sections of bendings, and the thickness of magnetic bridge 6 is uniform, magnetic bridge 6 with a thickness of Z, motor
The One-sided Widths of air gap are set as δ, and the ratio of Z/ δ should meet following relationship：δ >=1 2.2 >=Z/, the width of air gap are set as δ, W/ δ's
Ratio should meet following relationship：δ >=1 1.6 >=W/, so that the thickness of magnetic bridge 6 is meeting rotor knot in a preferably range
Magnetism isolating effect is further promoted on the basis of structure intensity, promotes the saturation degree that magnetizes of permanent magnet, promotes motor magnetic linkage, promotes motor
Efficiency.
It is formed by magnetic bridge 6 between bore 5 and magnet isolation tank 4 and is provided with corner cut 11 at crooked place, at corner cut 11
Magnetic bridge 6 minimum widith be P, magnetic bridge 6 with a thickness of L, the ratio of P/L should meet following relationship：1.5 >=P/L >=1,
This magnetic bridge 6 with bending, in the part of bending, 6 width of magnetic bridge is larger, can be with after corner cut 11 are arranged in magnetic bridge 6
The width for further decreasing magnetic bridge 6, further promotes magnetism isolating effect, the saturation degree that magnetizes of permanent magnet is further promoted, into one
Step promotes motor magnetic linkage, promotes electric efficiency.
From outside to inside along radial direction, the width of magnet isolation tank 4 is followed successively by successively decrease-being incremented by-successively decrease-being incremented by-successively decrease, along
Close to the direction of shaft hole 7, the width of the constriction of magnet isolation tank 4 successively decreases, thus in the equal shape in circumferential both sides of the edge of magnet isolation tank 4
At 3 broached-tooth designs, the length of the magnetic bridge 6 with bending can be made longer, so that the magnetic line of force in magnetic field of magnetizing is more difficult to lead to
This bridge closure is crossed, the magnetism isolating effect of magnetic bridge is further promoted, reduces leakage field.
Width of the magnet isolation tank 4 far from 7 one end of shaft hole is Q, along close to the direction of shaft hole 7, the narrowed position of magnet isolation tank 4
The width at the place of setting is followed successively by S, T, U, and S > T > U, wherein the ratio of U/Q should meet following relationship：0.3≥U/Q≥0.2.3 saws
The width of the narrower part every bore of dentation becomes narrow gradually, but the area every bore will not be made too small, and because of 3 bottom of permanent magnet
Portion middle position is the part for being most not easy to be magnetized saturation, the width in 4 bottom middle position of magnet isolation tank, the i.e. width of U, to permanent magnetism
The effect of saturation degree maximum that magnetizes of 3 bottom of body, as 0.3 >=U/Q >=0.2, can promote magnetism isolating effect, promote filling for permanent magnet
Magnetic saturation promotes motor magnetic linkage, while when motor operation, and the leakage field of permanent magnet bottom is reduced, and further promotes motor magnetic
Chain further promotes electric efficiency.
From outside to inside along radial direction, it is followed successively by incremental-successively decreasing-every the width of bore 5 and is incremented by-successively decreasing-and be incremented by, every magnetic
Direction of the hole 5 close to the end face of shaft hole 7 away from shaft hole 7 is recessed, in the case where not reducing magnetism isolating effect, Ke Yiyou
Effect promotes the mechanical strength of rotor structure.
Magnetic bridge 6 includes four sections of bendings, and everywhere of different size of magnetic bridge 6, the width at the most narrow place of magnetic bridge 6 is W, every
The width of the widest part of magnetic bridge 6 is V, W=(0.7~0.8) V, and the width of air gap is set as δ, and the ratio of W/ δ should meet with ShiShimonoseki
System：1.6≥W/δ≥1.The bending of such magnetic shielding structure, magnetic bridge 6 is more, and 6 length of magnetic bridge is longer, therefore magnetic bridge 6 is not made into
Clean width just can reach preferable magnetism isolating effect, and as W=(0.7~0.8) V, magnetism isolating effect is optimal, and magnetic field of magnetizing can be with
More enter permanent magnet bottom, permanent magnet magnetizes, and saturation degree is higher, and motor magnetic linkage is higher, and electric efficiency is higher, improves simultaneously
The anti-demagnetization capability of motor.
The peripheral side of rotor core 1 is arranged with non-magnetic fastening sheath 8.Fastening sheath 8 is tube-in-tube structure, itself does not lead
Magnetic can further reinforce motor rotor construction, improve the structural strength of rotor, improve the running frequency model of rotor
It encloses, improves operational reliability, widen the application of tangential motor.
Magnet isolation tank 4 and/or every being provided with non-magnetic reinforcing rod 9 in bore 5, reinforcing rod 9 is non-magnetic, and reinforcing rod 9 is placed in
Its surface of part on the inside of rotor and magnet isolation tank 4 are in contact every bore 5 or match with the two shape, and reinforcing rod 9 is placed in
Part on the outside of rotor can be made into circle or other shapes, and the part that reinforcing rod 9 is placed on the outside of rotor is connected with rotor stop plate,
One side reinforcing rod 9 guarantee permanent magnet 3 magnetize saturation degree in the case where can increase the fixed contact in 3 surface of permanent magnet
Area reduces running local pressure, can preferably fixed permanent magnet 3, prevent the wind of 3 fragmentation of permanent magnet in operational process
Danger, another aspect reinforcing rod 9 connect with the baffle of rotor core 1, and the structure for further increasing rotor with baffle fit is strong
Degree.
Magnet isolation tank 4 and/or every being filled with un-conducted magnetic material in bore 5.Magnet isolation tank 4 and every can be filled completely in bore 5
Un-conducted magnetic material can also fill un-conducted magnetic material after being packed into reinforcing rod 9 as reinforcer, to not led by what is filled
Magnetic material forms fixation to reinforcing rod 9 in magnet isolation tank 4 and/or every the installation in bore 5.
In another embodiment, every bore 5 be at least two, at least two every bore 5 along rotor core 1 it is radial according to
Minor tick setting, and cooperate with magnet isolation tank 4, form the magnetic bridge 6 of fold-line-shaped.In the present embodiment, magnet isolation tank 4 be with
The laciniation of two tooth tops, every the hole that bore 5 is two triangles, one of them is located at the close shaft hole 7 of magnet isolation tank 4
Side, another is located at side of the magnet isolation tank 4 far from shaft hole 7, two it is tri-angle-holed between gap correspond to every magnetic
One tooth top of slot 4, and two tri-angle-holed shapes respectively with its corresponding to sawtooth match, thus formed it is longer every
Magnetic bridge 6 can have more preferably good magnetism isolating effect.
In another embodiment, magnetic bridge 6 is curved shape.In the present embodiment, the edge of magnet isolation tank 4 is curve,
Every the edge shape of bore 5 be also curve, thus magnet isolation tank 4 and between bore 5 forming curves shape magnetic bridge 6.
According to an embodiment of the invention, magneto includes 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 merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (34)
1. a kind of rotor, which is characterized in that including rotor core (1), the rotor core (1) is circumferentially arranged have it is multiple
Permanent magnet trough (2), the permanent magnet trough (2) is interior to be provided with permanent magnet (3), is provided on the inside of the permanent magnet trough (2) every magnetic
Slot (4) is arranged at intervals between two adjacent magnet isolation tanks (4) every bore (5), the magnet isolation tank (4) and described every bore (5)
Between form fold-line-shaped or curved magnetic bridge (6).
2. rotor according to claim 1, which is characterized in that the magnetic bridge (6) is serrated.
3. rotor according to claim 1, which is characterized in that described symmetrical about pole center line every bore (5).
4. rotor according to claim 1, which is characterized in that along radial direction, the width of the magnet isolation tank (4)
To successively decrease from centre to both ends.
5. rotor according to claim 4, which is characterized in that along radial direction, the width every bore (5)
To be incremented by from centre to both ends.
6. rotor according to claim 5, which is characterized in that the most narrow place every bore (5) corresponds to described
The widest part of magnet isolation tank (4).
7. rotor according to claim 4, which is characterized in that the maximum width of the magnet isolation tank (4) is I, described
The width of permanent magnet trough (2) is B, wherein I > B.
8. rotor according to claim 4, which is characterized in that the radial width of the magnet isolation tank (4) is C, described
The outer radius of rotor core (1) is R1, and wherein the ratio of C/R1 meets following relationship：
0.06≥C/R1≥0.03。
9. rotor according to claim 5, which is characterized in that the minimum widith every bore (5) is G, adjacent
Two magnet isolation tanks (4) between minimum widith be H, wherein the ratio of G/H should meet following relationship：
0.6≥G/H≥0.2。
10. rotor according to claim 4, which is characterized in that the minimum widith of the magnet isolation tank (4) is J, described
The maximum width of magnet isolation tank (4) is I, and the ratio of I/J should meet following relationship：
2≥I/J≥1。
11. rotor according to claim 1, which is characterized in that the thickness of the magnetic bridge (6) is uniform, it is described every
Magnetic bridge (6) with a thickness of K, the air gap One-sided Widths of motor are δ, and the ratio of K/ δ should meet following relationship：
1.8≥K/δ≥0.8。
12. rotor according to claim 1, which is characterized in that along radial direction, the width of the magnet isolation tank (4)
Degree is incremental from centre to both ends.
13. rotor according to claim 12, which is characterized in that along radial direction, the width every bore (5)
Degree is to successively decrease from centre to both ends.
14. rotor according to claim 12, which is characterized in that the radial outside edge of the magnet isolation tank (4) and its
Angle between adjacent flanging is A, the angle between the radial centre lines of pole center line permanent magnet trough adjacent thereto (2)
Ratio for E, A/E should meet following relationship：
2≥A/E≥0.9。
15. rotor according to claim 13, which is characterized in that the section every bore (5) is round or water chestnut
Shape.
16. rotor according to claim 1, which is characterized in that the rotor core (1) includes shaft hole (7), institute
The circumferential both ends for stating magnet isolation tank (4) are respectively formed the first toothed edge, described to correspond to described magnet isolation tank (4) circumferential two every bore (5)
End forms the second toothed edge, and first toothed edge and second toothed edge are meshed.
17. rotor according to claim 16, which is characterized in that from outside to inside along radial direction, described every magnetic
The width of slot (4) is followed successively by successively decrease-being incremented by-successively decrease.
18. rotor according to claim 17, which is characterized in that the narrowest part of the magnet isolation tank (4) is close to institute
Shaft hole (7) setting is stated, from outside to inside along radial direction, the width at the narrowed place of the magnet isolation tank (4) is followed successively by X, Y, institute
The width for stating permanent magnet trough (2) is B, wherein：
0.95 >=X/B >=0.65,1.3 >=Y/B >=0.3.
19. rotor according to claim 17, which is characterized in that from outside to inside along radial direction, described every magnetic
The width in hole (5) is followed successively by incremental, and-successively decreasing-is incremented by.
20. rotor according to claim 19, which is characterized in that the most narrow width every bore (5) is M, institute
The most narrow width for stating magnetic bridge (6) is O, and the ratio of M/O should meet following relationship：
3≥M/O≥0.8。
21. rotor according to claim 19, which is characterized in that the magnetic bridge (6) has two sections of bendings, described
The thickness of magnetic bridge (6) is uniform, the magnetic bridge (6) with a thickness of Z, the One-sided Widths of the air gap of motor are set as δ, the ratio of Z/ δ
Value should meet following relationship：
2.2≥Z/δ≥1。
22. rotor according to claim 19, which is characterized in that it is described every bore (5) and the magnet isolation tank (4) it
Between be formed by the magnetic bridge (6) and be provided at crooked place corner cut (11), the magnetic bridge (6) at the corner cut (11)
Minimum widith is P, the magnetic bridge (6) with a thickness of L, the ratio of P/L should meet following relationship：
1.5≥P/L≥1。
23. rotor according to claim 16, which is characterized in that from outside to inside along radial direction, described every magnetic
The width of slot (4) is followed successively by successively decrease-being incremented by-successively decrease-being incremented by-successively decrease, along close to the shaft hole (7) direction, it is described every
The width of the constriction of magnetic slot (4) successively decreases.
24. rotor according to claim 23, which is characterized in that the magnet isolation tank (4) is far from the shaft hole (7)
The width of one end is Q, and along the direction close to the shaft hole (7), the width at the narrowed position of the magnet isolation tank (4) is successively
For S, T, U, S > T > U, wherein the ratio of U/Q should meet following relationship：
0.3≥U/Q≥0.2。
25. rotor according to claim 23, which is characterized in that from outside to inside along radial direction, described every magnetic
The width in hole (5) is followed successively by incremental, and-successively decreasing-is incremented by, and-successively decreasing-is incremented by, the end every bore (5) close the shaft hole (7)
The direction far from the shaft hole (7) is facing to be recessed.
26. rotor according to claim 25, which is characterized in that the magnetic bridge (6) includes four sections of bendings, described
Magnetic bridge (6) everywhere of different size, the width at the most narrow place of the magnetic bridge (6) are W, the widest part of the magnetic bridge (6)
Width be V, W=(0.7~0.8) V, the width of air gap is set as δ, and the ratio of W/ δ should meet following relationship：1.6≥W/δ≥1.
27. rotor according to claim 1, which is characterized in that the peripheral side of the rotor core (1) is arranged with not
The fastening sheath (8) of magnetic conduction.
28. rotor according to claim 1, which is characterized in that the magnet isolation tank (4) and/or described every bore (5)
Inside it is provided with non-magnetic reinforcing rod (9).
29. rotor according to claim 28, which is characterized in that the outer surface of the reinforcing rod (9) and it is described every
The inner surface of magnetic slot (4) is in contact or the shape of the reinforcing rod (9) and the shape of the magnet isolation tank (4) match；And/or
The outer surface of the reinforcing rod (9) is in contact with the inner surface every bore (5) or the shape of the reinforcing rod (9)
Match with the shape every bore (5).
30. the rotor according to any one of claim 27 to 29, which is characterized in that the magnet isolation tank (4) and/or
It is described to be filled with un-conducted magnetic material in the bore (5).
31. rotor according to claim 1, which is characterized in that it is described every bore (5) be at least two, at least two
It is successively spaced setting along the radial direction of the rotor core (1) every bore (5) described in a, and is cooperated with the magnet isolation tank (4),
Form the magnetic bridge (6) of fold-line-shaped.
32. rotor according to claim 1, which is characterized in that the magnetic bridge (6) is curved shape.
33. rotor structure according to claim 1, which is characterized in that be equipped with permanent magnet in each permanent magnet trough (2)
(3), permanent magnet (3) tangentially magnetizes, adjacent two permanent magnet (3) polar repulsions setting.
34. a kind of magneto, including rotor, which is characterized in that the rotor is any in claims 1 to 33
Rotor described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930685.8A CN108923558A (en) | 2018-08-15 | 2018-08-15 | Rotor and magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930685.8A CN108923558A (en) | 2018-08-15 | 2018-08-15 | Rotor and magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108923558A true CN108923558A (en) | 2018-11-30 |
Family
ID=64405057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810930685.8A Pending CN108923558A (en) | 2018-08-15 | 2018-08-15 | Rotor and magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108923558A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224516A (en) * | 2019-07-08 | 2019-09-10 | 苏州市润豪电机有限公司 | A kind of two extremely embedded brushless DC motor rotors |
| CN112688456A (en) * | 2021-01-11 | 2021-04-20 | 珠海格力电器股份有限公司 | Motor and compressor |
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| CN105490415A (en) * | 2016-01-06 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet rotor and permanent magnet motor |
| WO2017121567A1 (en) * | 2016-01-14 | 2017-07-20 | Jaguar Land Rover Limited | Rotor for an electric machine |
| CN208835857U (en) * | 2018-08-15 | 2019-05-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
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| CN103779990A (en) * | 2012-10-18 | 2014-05-07 | 罗伯特·博世有限公司 | Rotor assembly used for rotary motor |
| CN105048666A (en) * | 2014-04-30 | 2015-11-11 | 马渊马达株式会社 | Rotor and brushless motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110224516A (en) * | 2019-07-08 | 2019-09-10 | 苏州市润豪电机有限公司 | A kind of two extremely embedded brushless DC motor rotors |
| CN112688456A (en) * | 2021-01-11 | 2021-04-20 | 珠海格力电器股份有限公司 | Motor and compressor |
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