CN108768027A - Rotor and magneto - Google Patents
Rotor and magneto Download PDFInfo
- Publication number
- CN108768027A CN108768027A CN201810930674.XA CN201810930674A CN108768027A CN 108768027 A CN108768027 A CN 108768027A CN 201810930674 A CN201810930674 A CN 201810930674A CN 108768027 A CN108768027 A CN 108768027A
- Authority
- CN
- China
- Prior art keywords
- isolation tank
- magnet
- extension
- magnet isolation
- rotor
- 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.)
- Pending
Links
- 238000002955 isolation Methods 0.000 claims abstract description 145
- 230000005291 magnetic effect Effects 0.000 claims abstract description 134
- 239000000696 magnetic material Substances 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000005389 magnetism Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 11
- 230000004907 flux Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of rotor of present invention offer and magneto.The rotor includes rotor core (1), rotor core (1) is circumferentially arranged multiple permanent magnet troughs (2), it is provided with permanent magnet (3) in permanent magnet trough (2), permanent magnet trough is provided with magnet isolation tank on the inside of (2), magnet isolation tank is arranged in a one-to-one correspondence with permanent magnet trough (2), magnet isolation tank includes the first magnet isolation tank (4) and the second magnet isolation tank (5), first magnet isolation tank (4) and the second magnet isolation tank (5) are arranged alternately along the circumferential direction of rotor core (1), fold-line-shaped or curved magnetic bridge (6) are formed between first magnet isolation tank (4) and the second magnet isolation tank (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 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 technology
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 so that motor has larger torque/electric current ratio and torque/volume ratio, is applied more and more
In occasions such as servo-drive 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.
Invention content
Therefore, the technical problem to be solved in the present invention is to provide a kind of rotor and magneto, can effectively carry
High magnetism isolating effect reduces leakage field on the inside of rotor, promotes the saturation degree that magnetizes of rotor, promotes motor performance.
To solve the above-mentioned problems, the present invention provides a kind of rotor, including rotor core, rotor core are circumferentially set
Be equipped with multiple permanent magnet troughs, permanent magnet be provided in permanent magnet trough, be provided with magnet isolation tank on the inside of permanent magnet trough, magnet isolation tank with forever
Magnet slot is arranged in a one-to-one correspondence, and magnet isolation tank includes the first magnet isolation tank and the second magnet isolation tank, the first magnet isolation tank and the second magnet isolation tank edge
The circumferential direction of rotor core is arranged alternately, and fold-line-shaped or curved magnetic bridge are formed between the first magnet isolation tank and the second magnet isolation tank.
Preferably, the circumferential both sides of the first magnet isolation tank have the first extension, the first extension towards adjacent second every
Magnetic slot extends, and crosses pole center line, and form magnetic bridge between the second adjacent magnet isolation tank.
Preferably, the first extension successively decreases along the direction width of stretching.
Preferably, the radial inside edge of the first magnet isolation tank along far from rotor core central axis direction indent.
Preferably, the radial minimum widith of the first magnet isolation tank is A, and the radial maximum distance of the first extension and permanent magnet is
The width of D, permanent magnet are C, and the ratio of A/C meets following relationship：
0.3≥A/C≥0.15；
The ratio of D/A meets following relationship：
2.4≥D/A≥1.8。
Preferably, there is the side wall of the first magnet isolation tank the convex block inwardly stretched out, convex block to be located at permanent magnet trough with first every magnetic
The intersection of slot.
Preferably, the head of the first extension relative to the first extension root closer to rotor core central shaft
Line.
Preferably, the circumferential both sides of the second magnet isolation tank have recessed portion, the first extension corresponds to recessed portion be arranged, and with it is recessed
Concave portion cooperatively forms magnetic bridge.
Preferably, the radial inside edge of the second magnet isolation tank along far from rotor core central axis direction indent.
Preferably, the smallest radial width of the second magnet isolation tank is E, and the width of permanent magnet is C, and the ratio satisfaction of E/C is following
Relationship：
0.35≥E/C≥0.2。
Preferably, the second extension is formed between the radial inside edge and recessed portion of the second magnet isolation tank, the second extension prolongs
Extend to the radially inner side of the first magnet isolation tank.
Preferably, the width of the even width of the second extension, the second extension is F, the radially inner side of the second magnet isolation tank
Side bottom portion of groove width is G, and the ratio of F/G meets following relationship：
1.5≥F/G≥0.7。
Preferably, the even width of the first extension, the even width of the second extension, the first extension and second stretch out
Magnetic bridge is formed between portion, the width of magnetic bridge is H, and the width of air gap of motor is δ, and the ratio of H/ δ meets following relationship：
1.8≥H/δ≥0.8。
Preferably, the even width of the first extension, the even width of the second extension, the first extension and second stretch out
Magnetic bridge is formed between portion, the width of magnetic bridge is H, and the width of the first extension is I, and the ratio of I/H meets following relationship：
2.5≥I/H≥1.5。
Preferably, the end of the first extension is provided with the protrusion protruded towards the second magnet isolation tank, protrusion and the second magnet isolation tank
Between form magnetic bridge, the even width of magnetic bridge.
Preferably, the peripheral side of rotor core is arranged with non-magnetic fastening sheath.
Preferably, it is provided with non-magnetic bracing piece in the first magnet isolation tank and/or the second magnet isolation tank.
Preferably, the outer surface of bracing piece is in contact with the inner surface of the first magnet isolation tank and/or the second magnet isolation tank, or reinforces
The shape of bar and the shape of the first magnet isolation tank and/or the second magnet isolation tank match.
Preferably, it is filled with un-conducted magnetic material in the first magnet isolation tank and/or the second magnet isolation tank.
Preferably, it is equipped with permanent magnet in each permanent magnet trough, permanent magnet tangentially magnetizes, adjacent two 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, magnet isolation tank is arranged in a one-to-one correspondence with permanent magnet trough,
Magnet isolation tank includes the first magnet isolation tank and the second magnet isolation tank, and the first magnet isolation tank and the second magnet isolation tank are alternately set along the circumferential of rotor core
It sets, forms fold-line-shaped or curved magnetic bridge between the first magnet isolation tank and the second magnet isolation tank.First magnet isolation tank and second is every magnetic
Fold-line-shaped or curved magnetic bridge are formed between slot, tangential motor is when magnetizing, the rotor core of permanent magnet trough two bottom sides
Magnetism guiding access is constituted, the magnetic line of force is closed from this magnetism guiding access so that magnetic line of force permanent magnet inside bottom more difficult to get access position is formed
Leakage magnetic flux Φ σ are arranged such magnetic shielding structure in permanent magnet inside bottom, can increase the magnetic resistance of permanent magnet trough bottom passageway, subtract
Magnetize the magnetic line of force that magnetic field is closed here less, reduces leakage magnetic flux, promotes the magnetic line of force to enter magnet steel bottom, to improve rotor forever
The saturation degree that magnetizes of magnet, while the permanent magnet brow leakage close to rotor bottom can be reduced, and then improve the zero load of motor
Magnetic linkage promotes the efficiency of motor, improves the performance of motor, while the more saturation that permanent magnet magnetizes, and the demagnetization capability of motor is stronger,
It is simultaneously open slot on the outside of the permanent magnet trough of rotor, further decreases the leakage field on the outside of permanent magnet, improve air gap flux density, carry
High electric efficiency.Since magnetic bridge is directly formed by the first magnet isolation tank and the second magnet isolation tank, the number of openings, therefore energy are reduced
Technique processing cost is enough reduced, processing efficiency is improved.
Description of the drawings
Fig. 1 is the dimensional structure schematic diagram of the rotor of the embodiment of the present invention；
Fig. 2 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Fig. 3 is the dimensional structure schematic diagram of the rotor of another embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the rotor of another embodiment of the present invention；
Fig. 5 is the structural 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 structural schematic diagram of the rotor of another embodiment of the present invention；
Fig. 8 is the magnetic structure schematic diagram of the rotor of the embodiment of the present invention；
Fig. 9 is the structural 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.
Reference numeral is expressed as：
1, rotor core；2, permanent magnet trough；3, permanent magnet；4, the first magnet isolation tank；5, the second magnet isolation tank；6, magnetic bridge；7,
Shaft hole；8, fastening sheath；9, bracing piece；10, it is open；11, the first extension；12, the second extension；13, convex block；14, convex
It rises.
Specific implementation mode
In conjunction with referring to shown in Fig. 1 to 11, 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, magnet isolation tank are arranged in a one-to-one correspondence with permanent magnet trough 2, and magnet isolation tank includes the first magnet isolation tank 4 and the second magnet isolation tank 5, and first every magnetic
Slot 4 and the second magnet isolation tank 5 are arranged alternately along the circumferential direction of rotor core 1, and folding is formed between the first magnet isolation tank 4 and the second magnet isolation tank 5
Linear or curved magnetic bridge 6.Preferably, permanent magnet 3 is equipped in each permanent magnet trough 2, permanent magnet 3 tangentially magnetizes, phase
Adjacent two 3 polar repulsions of permanent magnet setting.
Rotor includes rotor core 1, and permanent magnet trough 2 is radially provided on rotor core 1, is set in permanent magnet trough 2
It is equipped with tangential magnetized permanent magnet 3, the radially inner side of permanent magnet trough 2 is provided with the first magnet isolation tank 4 and the second magnet isolation tank 5, adjacent
The first magnet isolation tank 4 and the second magnet isolation tank 5 between form fold-line-shaped or curved magnetic bridge 6.Above-mentioned permanent magnet 3 is, for example,
Magnet steel.
The magnetic shielding structure of such winding corridor shape is set in permanent magnet inside bottom, 2 bottom passageway of permanent magnet trough can be increased
Magnetic resistance reduces the magnetic line of force that magnetic field of magnetizing is closed here, promotes the magnetic line of force to enter permanent magnet bottom, to improve rotor permanent magnet
The saturation degree that magnetizes of body, while the permanent magnet brow leakage close to rotor bottom can be reduced, and then improve the unloaded magnetic of motor
Chain improves the power density of motor, promotes the efficiency of motor.
In the present embodiment, permanent magnet 3 is even along circumferential direction is distributed on rotor core 1, and the quantity of permanent magnet 3 is N
A, 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 that edge is cut
To magnetization, adjacent two 3 polarity having the same of permanent magnet are oppositely arranged.There are shaft hole 7, permanent magnet in 1 inside of rotor core
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 magnet
The outside of slot 2, rotor core 1 are an integral structure, and have a dowel between shaft hole 7 on the inside of permanent magnet trough.
Opening 10 is offered in radial outside of the permanent magnet trough 2 far from shaft hole 7, 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.
Fold-line-shaped is formed between first magnet isolation tank 4 and the second magnet isolation tank 5 or curved magnetic bridge 6, tangential motor are filling
When magnetic, the rotor core of 2 two bottom sides of permanent magnet trough constitutes magnetism guiding access, and the magnetic line of force is closed from this magnetism guiding access so that magnetic force
Line permanent magnet inside bottom more difficult to get access position forms leakage magnetic flux Φ σ, and such magnetic shielding structure is arranged in permanent magnet inside bottom,
The magnetic resistance of 2 bottom passageway of permanent magnet trough can be increased, the magnetic line of force that magnetic field of magnetizing is closed here is reduced, the magnetic line of force is promoted to enter
It is reduced using stiff shaft on the inside of rotor to improve the saturation degree that magnetizes of rotor permanent magnet 3 magnet steel bottom
Permanent magnet brow leakage, and then improve the magnetic linkage of motor, promote the performance of motor, while on the outside of the permanent magnet trough of rotor
For open slot, the leakage field on the outside of permanent magnet is further decreased, improves air gap flux density, improves electric efficiency.
Since magnetic bridge 6 is directly formed by the first magnet isolation tank 4 and the second magnet isolation tank 5, the number of openings, therefore energy are reduced
Technique processing cost is enough reduced, processing efficiency is improved.
Preferably, the first magnet isolation tank 4 is about the permanent magnet center line symmetrical setting where it, and the second magnet isolation tank 5 is about it
The permanent magnet center line symmetrical setting at place.
The circumferential both sides of first magnet isolation tank 4 have the first extension 11, and the first extension 11 is towards adjacent second every magnetic
Slot 5 extends, and crosses pole center line, and magnetic bridge 6 is formed between the second adjacent magnet isolation tank 5.Two the first extensions 11
Maximum width along circumferential direction is more than the width of permanent magnet 3 along circumferential direction, and two the first extensions 11 all extend to phase
The radially inner side position of adjacent permanent magnet trough 2.It is no permeable material in first magnet isolation tank 4, increases width, increases the first magnet isolation tank
4 area increases the magnetic resistance of the first magnet isolation tank 4, improves the magnetic resistance of 3 inside of permanent magnet so that the magnetic line of force that magnetizes more enters
Permanent magnet inner side improves the saturation degree that magnetizes of permanent magnet 3, improves empty load of motor magnetic linkage, promotes electric efficiency.
Preferably, the first extension 11 successively decreases along the direction width of stretching, is formed in one end close to the second magnet isolation tank 5
Tip, and by forming magnetic bridge 6 between the tip and the second magnet isolation tank 5.It can be more easily with second using the tip
The magnetic bridge 6 that fold-line-shaped is formed between magnet isolation tank 5 increases magnetism isolating effect to increase the length of magnetic bridge 6, reduces from every magnetic
The leakage magnetic circuit that bridge 6 is closed, while can also be reinforced by the magnetic bridge 6 of fold-line-shaped between the rotor core 1 of magnetic bridge 6 both sides
Bonding strength.
The radial inside edge of first magnet isolation tank 4, can be not along the direction indent of the central axis far from rotor core 1
On the basis of the magnetism isolating effect for influencing magnetic bridge 6, the thickness of the dowel between the first magnet isolation tank 4 and shaft hole 7 is increased, is improved
The mechanical strength of rotor core 1.
The head of first extension 11 relative to the first extension 11 root closer to rotor core 1 central axis,
The magnetic conductive area that the part of shaft connection rotor core 1 can be reduced, increases internal magnetic circuit reluctance, improve inside magnetic circuit every magnetic
Effect.
The radial minimum widith of first magnet isolation tank 4 is A, and the radial maximum distance of the first extension 11 and permanent magnet 3 is D,
The width of permanent magnet 3 is C, and the ratio of A/C meets following relationship：0.3≥A/C≥0.15；The ratio of D/A meets following relationship：
2.4≥D/A≥1.8.By limiting above-mentioned relation, width of first magnet isolation tank 4 along root diameter direction can be increased, increase the
The magnetic resistance of one magnet isolation tank 4 improves the saturation degree that magnetizes of permanent magnet, improves the unloaded magnetic linkage of motor, promotes the efficiency of motor, and first
Extension 11 cannot be too wide with 3 distance D of permanent magnet, and otherwise the thickness of the part of rotor connection shaft is narrow, influences motor and turns
The mechanical strength of son, iron core fracture is easily led in motor operation, and motor occurs sweeping thorax.
Preferably, the side wall of the first magnet isolation tank 4 has the convex block 13 that inwardly stretches out, and convex block 13 is located at permanent magnet trough 2 and the
The intersection of one magnet isolation tank 4, can form stop configurations by the convex block 13 that inwardly stretches out, it is convenient to the first magnet isolation tank 4 pair
The permanent magnet 3 answered is fixed.
There is recessed portion, the first extension 11 to correspond to recessed portion setting, and and recessed portion for the circumferential both sides of second magnet isolation tank 5
Cooperatively form magnetic bridge 6.Since the second magnet isolation tank 5 is recessed inwardly from circumferential both sides, along the radial direction from the second magnet isolation tank 5
To the direction of recessed position, the width of the second magnet isolation tank 5 successively decreases outer side edges, namely is connected to from the second magnet isolation tank 5 with permanent magnet trough 2
Position start, until the width of recessed position, the second magnet isolation tank 5 is less than the width of permanent magnet trough 2 always, again smaller than permanent magnetism
The width of body 3, therefore permanent magnet 3 can be fixed by the recess of the second magnet isolation tank 5, prevent permanent magnet 3 from being transported in motor
Play influences electric efficiency when row.
The radial inside edge of second magnet isolation tank 5, can be not along the direction indent of the central axis far from rotor core 1
On the basis of the magnetism isolating effect for influencing magnetic bridge 6, the thickness of the dowel between the second magnet isolation tank 5 and shaft hole 7 is increased, is improved
The mechanical strength of rotor core 1.
The smallest radial width of second magnet isolation tank 5 is E, and the width of permanent magnet 3 is C, and the ratio of E/C meets following relationship：
0.35 >=E/C >=0.2, can increase the magnetic resistance of the second magnet isolation tank 5, while reduce the magnetic conductive area of interconnecting piece, increase interconnecting piece
The magnetic resistance at place increases the magnetic resistance of internal magnetic circuit, improves the magnetism isolating effect of inside magnetic circuit so that magnetize magnetic field from rotor dowel
By magnetic flux reduce, improve the saturation degree that magnetizes of permanent magnet, avoid permanent magnet from not magnetizing caused by saturation easily demagnetization problem, carry
The anti-demagnetization capability of high motor.
The second extension 12 is formed between the radial inside edge and recessed portion of second magnet isolation tank 5, the second extension 12 extends
To the radially inner side of the first magnet isolation tank 4, the area of the second magnet isolation tank 5 can be increased, increase the magnetic resistance of the second magnet isolation tank 5, increased
Magnetic field of magnetizing enters the magnetic line of force on the inside of permanent magnet, reduces internal magnetic circuit leakage field, improves the saturation degree that magnetizes of permanent magnet, improves electricity
Machine zero load magnetic linkage improves electric efficiency, ensures motor reliability service.
Preferably, the width of the even width of the second extension 12, the second extension 12 is F, the radial direction of the second magnet isolation tank 5
Inner side edge grooves bottom width is G, and the ratio of F/G meets following relationship：1.5 >=F/G >=0.7 can increase the second extension
12 area increases the magnetic resistance of the second extension 12, further increases the magnetic resistance of magnetic circuit on the inside of permanent magnet, raising magnetize magnetic field into
Enter the magnetic line of force on the inside of permanent magnet, reduce leakage field, improves permanent magnet and magnetize saturation degree, while simplifying magnetic shielding structure, simplify
Processing technology reduces processing cost, reduces motor assembly sheet.
The even width of first extension 11, the even width of the second extension 12, the first extension 11 and second stretch out
Magnetic bridge 6 is formed between portion 12, the width of magnetic bridge 6 is H, and the width of air gap of motor is δ, and the ratio of H/ δ meets following relationship：
1.8≥H/δ≥0.8.Magnetic bridge is narrow, and magnetic bridge serves as the interconnecting piece that shaft drives rotor rotation, and dowel is narrower, rotor knot
The mechanical strength of structure is weaker, and the material of magnetic bridge 6 is silicon steel sheet, is magnetic conduction substance, so magnetic bridge again cannot be too wide, otherwise not
Magnetism isolating effect can be played.When relationship using the above structure, the saturation degree highest that magnetizes of permanent magnet at this time, the unloaded magnetic linkage of motor
Highest, electric efficiency highest improve motor and contribute, improve output power of motor.
The even width of first extension 11, the even width of the second extension 12, the first extension 11 and second stretch out
Magnetic bridge 6 is formed between portion 12, the width of magnetic bridge 6 is H, and the width of the first extension 11 is I, and the ratio satisfaction of I/H is following
Relationship：2.5≥I/H≥1.5.The width I of first extension 11 is larger to the influential effect that magnetizes, because permanent magnet is mainly inside
Centre position is more difficult to fill saturation, therefore width I cannot be narrow, but width I again cannot be wide, the wide thickness for reducing interconnecting piece, drop
The mechanical strength of low rotor structure reduces the enclasping force of rotor structure.
The end of first extension 11 is provided with the protrusion 14 protruded towards the second magnet isolation tank 5, protrusion 14 and the second magnet isolation tank 5
Between form magnetic bridge 6, the even width of magnetic bridge 6 can reduce the thickness of magnetic bridge 6, reduce the area of magnetic bridge 6, increase
The magnetic resistance of big magnetic bridge 6, improves total magnetic resistance of magnetic circuit on the inside of permanent magnet, promotes the effect that magnetizes of permanent magnet, improve filling for motor
Magnetic saturation promotes electric efficiency, avoids permanent magnet from not magnetizing and is saturated caused easily demagnetization problem, improves the anti-demagnetization energy of motor
Power.
The radial inside edge of first magnet isolation tank 4 can be V-arrangement or trapezoidal, and the radial inside edge of the second magnet isolation tank 5 can also
For V-arrangement or trapezoidal.
When first extension 11 is triangle, the second extension 12 can be quadrangle, or triangle；First stretches
Go out portion 11 be quadrangle when, the second extension 12 can be quadrangle, or triangle.
Above-mentioned the first magnet isolation tank 4, the first extension 11, the second magnet isolation tank 5 and the second extension 12 structure can be with
It is combined with each other, to form the rotor of various different embodiments.
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 scenario of tangential motor.
It is provided with non-magnetic bracing piece 9 in first magnet isolation tank 4 and/or the second magnet isolation tank 5, bracing piece 9 is non-magnetic, reinforces
Its surface of the part that bar 9 is placed on the inside of rotor with and/or the second magnet isolation tank 5 be in contact or match with the two shape, reinforce
The part that bar 9 is placed on the outside of rotor can make circle or other shapes, and bracing piece 9 is placed in the part on the outside of rotor and rotor stop plate
Be connected, one side bracing piece 9 ensure permanent magnet 3 magnetize saturation degree in the case of can increase 3 surface of permanent magnet and consolidated
Fixed contact area reduces running local pressure, can preferably fixed permanent magnet 3, prevent permanent magnet 3 in operational process
The risk of fragmentation, another aspect bracing piece 9 connect with the baffle of rotor core 1, and rotor is further increased with baffle fit
Structural strength.
It is filled with un-conducted magnetic material in first magnet isolation tank 4 and/or the second magnet isolation tank 5.First magnet isolation tank 4 and/or second every
Un-conducted magnetic material can be filled in magnetic slot 5 completely as reinforcer, non-magnetic material can also be filled after being packed into bracing piece 9
Material, to be formed to installation of the bracing piece 9 in the first magnet isolation tank 4 and/or the second magnet isolation tank 5 by the un-conducted magnetic material of filling
It is fixed.
Permanent magnet trough 2 can be rectangle, or trapezoidal.
According to an embodiment of the invention, magneto includes rotor, which is above-mentioned rotor.
Those skilled in the art will readily recognize that under the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle etc., should all be included in the protection scope of the present invention.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 the guarantor of the present invention
Protect range.
Claims (21)
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 with every magnetic on the inside of the permanent magnet trough (2)
Slot, the magnet isolation tank are arranged in a one-to-one correspondence with the permanent magnet trough (2), and the magnet isolation tank includes the first magnet isolation tank (4) and second
Magnet isolation tank (5), first magnet isolation tank (4) and second magnet isolation tank (5) are alternately set along the circumferential of the rotor core (1)
It sets, forms fold-line-shaped or curved magnetic bridge (6) between first magnet isolation tank (4) and second magnet isolation tank (5).
2. rotor according to claim 1, which is characterized in that the circumferential both sides of first magnet isolation tank (4) have
First extension (11), first extension (11) extend towards adjacent second magnet isolation tank (5), cross pole center
Line, and form the magnetic bridge (6) between adjacent second magnet isolation tank (5).
3. rotor according to claim 2, which is characterized in that first extension (11) along stretching direction
Width successively decreases.
4. rotor according to claim 2, which is characterized in that the radially inner side edge of first magnet isolation tank (4)
The direction indent of the central axis far from the rotor core (1).
5. rotor according to claim 4, which is characterized in that the radial minimum widith of first magnet isolation tank (4)
For A, first extension (11) and the radial maximum distance of the permanent magnet (3) are D, and the width of the permanent magnet (3) is
The ratio of C, A/C meet following relationship：
0.3≥A/C≥0.15；
The ratio of D/A meets following relationship：
2.4≥D/A≥1.8。
6. rotor according to claim 2, which is characterized in that the side wall of first magnet isolation tank (4) has inside
The convex block (13) of stretching, the convex block (13) are located at the intersection of the permanent magnet trough (2) and first magnet isolation tank (4).
7. rotor according to claim 2, which is characterized in that the head of first extension (11) is relative to institute
The root of the first extension (11) is stated closer to the central axis of the rotor core (1).
8. rotor according to claim 2, which is characterized in that the circumferential both sides of second magnet isolation tank (5) have
Recessed portion, the corresponding recessed portion setting of first extension (11), and cooperatively form the magnetic bridge with the recessed portion
(6)。
9. rotor according to claim 8, which is characterized in that the radially inner side edge of second magnet isolation tank (5)
The direction indent of the central axis far from the rotor core (1).
10. rotor according to claim 9, which is characterized in that the smallest radial width of second magnet isolation tank (5)
Width for E, the permanent magnet (3) is C, and the ratio of E/C meets following relationship：
0.35≥E/C≥0.2。
11. rotor according to claim 9, which is characterized in that the radial inside edge of second magnet isolation tank (5) with
The second extension (12) is formed between the recessed portion, second extension (12) extends to first magnet isolation tank (4)
Radially inner side.
12. rotor according to claim 11, which is characterized in that the even width of second extension (12),
The width of second extension (12) is F, and the radial inside edge bottom portion of groove width of second magnet isolation tank (5) is G, F/G
Ratio meet following relationship：
1.5≥F/G≥0.7。
13. rotor according to claim 11, which is characterized in that the even width of first extension (11),
The even width of second extension (12) forms institute between first extension (11) and second extension (12)
Magnetic bridge (6) is stated, the width of the magnetic bridge (6) is H, and the width of air gap of motor is δ, and the ratio of H/ δ meets following relationship：
1.8≥H/δ≥0.8。
14. rotor according to claim 11, which is characterized in that the even width of first extension (11),
The even width of second extension (12) forms institute between first extension (11) and second extension (12)
Magnetic bridge (6) is stated, the width of the magnetic bridge (6) is H, and the width of first extension (11) is I, and the ratio of I/H meets
Following relationship：
2.5≥I/H≥1.5。
15. rotor according to claim 2, which is characterized in that the end of first extension (11) is provided with
The protrusion (14) protruded towards second magnet isolation tank (5), between the protrusion (14) and second magnet isolation tank (5) described in formation
Magnetic bridge (6), the even width of the magnetic bridge (6).
16. 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.
17. rotor according to claim 1, which is characterized in that first magnet isolation tank (4) and/or second is every magnetic
It is provided with non-magnetic bracing piece (9) in slot (5).
18. rotor according to claim 17, which is characterized in that the outer surface of the bracing piece (9) and described the
The inner surface of one magnet isolation tank (4) and/or the second magnet isolation tank (5) be in contact or the shape of the bracing piece (9) with described first every
The shape of magnetic slot (4) and/or the second magnet isolation tank (5) matches.
19. the rotor according to any one of claim 1 to 18, which is characterized in that first magnet isolation tank (4)
And/or second be filled with un-conducted magnetic material in magnet isolation tank (5).
20. rotor structure according to claim 1, which is characterized in that be equipped with permanent magnet in each permanent magnet trough (2)
(3), the permanent magnet (3) tangentially magnetizes, adjacent two permanent magnet (3) polar repulsion settings.
21. a kind of magneto, including rotor, which is characterized in that the rotor is any in claim 1 to 20
Rotor described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930674.XA CN108768027A (en) | 2018-08-15 | 2018-08-15 | Rotor and magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930674.XA CN108768027A (en) | 2018-08-15 | 2018-08-15 | Rotor and magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108768027A true CN108768027A (en) | 2018-11-06 |
Family
ID=63970131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810930674.XA Pending CN108768027A (en) | 2018-08-15 | 2018-08-15 | Rotor and magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108768027A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132472A (en) * | 2019-05-16 | 2019-08-16 | 大同煤矿集团有限责任公司 | Bump monitoring sensor and bump monitoring device |
| 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 |
| WO2020108686A1 (en) * | 2018-11-29 | 2020-06-04 | Schaeffler Technologies AG & Co. KG | Actuator and method for assembling an actuator |
| CN113839493A (en) * | 2021-08-20 | 2021-12-24 | 南京航空航天大学 | Mixed magnetic pole type permanent magnet synchronous motor with high magnetic resistance torque |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150114879A (en) * | 2014-04-02 | 2015-10-13 | 삼성전자주식회사 | A rotor and a motor using the same |
| US20150318746A1 (en) * | 2014-04-30 | 2015-11-05 | Mabuchi Motor Co., Ltd. | Rotor and brushless motor |
| CN105490414A (en) * | 2015-12-25 | 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 |
| CN208835858U (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 |
-
2018
- 2018-08-15 CN CN201810930674.XA patent/CN108768027A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150114879A (en) * | 2014-04-02 | 2015-10-13 | 삼성전자주식회사 | A rotor and a motor using the same |
| US20150318746A1 (en) * | 2014-04-30 | 2015-11-05 | Mabuchi Motor Co., Ltd. | Rotor and brushless motor |
| CN105490414A (en) * | 2015-12-25 | 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 |
| CN208835858U (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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108686A1 (en) * | 2018-11-29 | 2020-06-04 | Schaeffler Technologies AG & Co. KG | Actuator and method for assembling an actuator |
| CN110132472A (en) * | 2019-05-16 | 2019-08-16 | 大同煤矿集团有限责任公司 | Bump monitoring sensor and bump monitoring device |
| CN110132472B (en) * | 2019-05-16 | 2020-09-18 | 大同煤矿集团有限责任公司 | Rock burst monitoring sensor and rock burst monitoring device |
| 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 |
| CN113839493A (en) * | 2021-08-20 | 2021-12-24 | 南京航空航天大学 | Mixed magnetic pole type permanent magnet synchronous motor with high magnetic resistance torque |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108768027A (en) | Rotor and magneto | |
| JP5961344B2 (en) | Magnetic flux concentrating type synchronous rotating electrical machine with permanent magnet | |
| CN208835852U (en) | Rotor and magneto | |
| CN108110980A (en) | Mid-series type has the adjustable flux electric machine of hybrid permanent magnet of passive adjustable magnetic magnetic barrier | |
| CN104882978B (en) | A kind of low torque ripple high efficiency permanent magnet motor stator and rotor structure | |
| US8754559B2 (en) | Rotor and rotary electric machine containing the same | |
| WO2020098339A1 (en) | Motor rotor structure and permanent magnet motor | |
| KR20140094516A (en) | Rotor for a rotating electric machine, and rotating electric machine comprising such a rotor | |
| CN105978199A (en) | Permanent magnetic vernier motor | |
| CN108808910B (en) | Built-in hybrid permanent magnet motor | |
| CN106169822A (en) | Motor and rotor structure thereof | |
| CN107733111A (en) | A kind of rotor core | |
| CN109245471A (en) | A kind of alternately polar permanent magnetic vernier motor | |
| CN109802541A (en) | The double V-shaped adjustable magnetic flux memory motor of hybrid permanent magnet | |
| CN208835858U (en) | Rotor and magneto | |
| CN108768025A (en) | Rotor and magneto | |
| US20210211004A1 (en) | Rotor and permanent magnet motor | |
| CN208835853U (en) | Rotor and magneto | |
| CN106451855A (en) | Consequent-pole permanent magnet motor | |
| CN108768024A (en) | Rotor and magneto | |
| CN108768026A (en) | Rotor and magneto | |
| CN208835855U (en) | Rotor and magneto | |
| CN208835857U (en) | Rotor and magneto | |
| CN102005836B (en) | Magnetic flow switching dual-salient pole motor with reinforced outer rotor magnetic field | |
| CN108768028A (en) | Rotor and magneto |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |