CN103999331B - Magneto - Google Patents
Magneto Download PDFInfo
- Publication number
- CN103999331B CN103999331B CN201280061396.XA CN201280061396A CN103999331B CN 103999331 B CN103999331 B CN 103999331B CN 201280061396 A CN201280061396 A CN 201280061396A CN 103999331 B CN103999331 B CN 103999331B
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- rotor
- permanent magnet
- slit
- outer circumference
- circumference surface
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- 239000004744 fabric Substances 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 12
- 230000004907 flux Effects 0.000 description 12
- 230000005389 magnetism Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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]
-
- 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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
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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 relates to a kind of magneto (1), it includes：It is embedded in the permanent magnet (23) in rotor (20), it is arranged at the position corresponding with each edge of the quadrangle centered on the axle center of rotor (20), with two ends close to rotor (20) outer circumference surface；And slit (26), they are arranged between the outer circumference surface of rotor (20) and permanent magnet (23) and arranged along permanent magnet (23) compartment of terrain, the section shape of the slit perpendicular to the rotor axis direction and with the strip extended from the permanent magnet to the rotor outer circle side face.For near the end of the permanent magnet (23) including the slit (26a for the slit accordingly arranged with the end, 26b), the longitudinal direction of the section of these slits is substantially parallel to each other, and the distance between the end of the outer circumference surface of the close rotor (20) of these slits and outer circumference surface (Xa, Xb) are different.
Description
Technical field
The present invention relates to the magneto with the rotor for being embedded with permanent magnet.
Background technology
Patent Document 1 discloses the rotor of conventional permanent magnet motor.The rotor of the conventional permanent magnet motor is that have in iron
The rotor of the structure of embedded permanent magnet in core (rotor core).The motor of rotor with such a structure can be utilized because of permanent magnet
Attract and the magnetic torque repelled and occurred and the reluctance torque occurred because coil attracts rotor core, this can be realized efficiently
Rate.Recently, the application of this kind of magneto is extended in the household electrical appliance such as air-conditioning, washing machine and refrigerator.
On the other hand, the torque ripple that the motor with the rotor for being embedded with permanent magnet occurs during rotor rotates is (i.e.,
Torque changes) become big possibility and worried.If torque ripple becomes big during rotor rotates, exist magneto with
And the problem of the vibration of the equipment comprising permanent magnet motor and big noise change.
To solve the problem, the rotor of the magneto described in patent document 1 (is used for relative to permanent magnet insert port
The perforation of permanent magnet) outside radially include a plurality of slit.This multiple slit is with generally equalized interval along neighbouring
Permanent magnet is arranged and formed so that their distances away from permanent magnet and all distances away from rotor outer circle side face become equal.
In this way, in conventional rotors, attempt to provide and a kind of reduce the torque ripple occurred during rotor rotates and reduction
Vibration and the motor of noise.
Reference listing
Patent document
Patent document 1:JP-A-1999-187597
The content of the invention
Technical problem
However, the rotor of conventional permanent magnet motor be formed so that between every slit and the permanent magnet in a plurality of slit away from
From and a plurality of slit in every slit equal with the distance between rotor outer circle side face all become equal；Then, for
The magnetic flux occurred near the end of the close rotor outer circle side face of permanent magnet, is not provided for suppressing the suitable of torque ripple
Consider.Accordingly, there exist the problem of the torque ripple that can not fully suppress to occur during rotor rotates.
The present invention is proposed according to above-mentioned aspect, and can effectively be suppressed it is an object of the invention to provide one kind
The magneto for the torque ripple that rotor occurs during rotating.
Technical scheme
The problem of to solve above, according to a kind of magneto of the present invention, it includes：Permanent magnet, its be arranged in with
At the corresponding position of polygonal each edge centered on the axle center of rotor, and institute is embedded in along the axis direction of the rotor
State in rotor so that outer circumference surface of two ends of the permanent magnet close to the rotor；And a plurality of slit, it is arranged in
Arranged between the outer circumference surface of the rotor and the permanent magnet and along the magnet compartment of terrain, the section shape of every slit
Shape is perpendicular to the axis direction of the rotor, the strip with the excircle surface side extension from the lateral rotor of the permanent magnet
Shape, and along the axis direction opening of the rotor, the permanent magnet being present between two ends and with described turn
The relative surface of outer circumference surface of son for the central portion between flat surfaces, and two ends of the permanent magnet accordingly
The longitudinal length of the respective section of slit is longer than other slits described in a pair of arrangement, wherein, in the permanent magnetism
Near two ends of body including the slit accordingly arranged with the two of the permanent magnet end
The a plurality of slit has more than two pairs, and the radius of the rotor passed through using the central portion in the permanent magnet is symmetrical
Axle constitutes same institute in a pair of slits, two ends of the permanent magnet by two slits in line symmetry
The longitudinal direction for stating a plurality of respective section of slit near end is parallel to each other, and the slit is respective close to described
The end of the outer circumference surface of rotor and the distance between the outer circumference surface of the rotor are different, from the axis side of the rotor
To observing all slits, all slit is towards the central portion between two ends of the permanent magnet
Direction is tilted, and longitudinal angle between the flat surfaces of the permanent magnet of the section of the slit, which is constituted, to be tilted
Angle, between the slit and the flat surfaces of the permanent magnet accordingly arranged with the central portion of the permanent magnet
The inclination angle than near the end including the slit that the end with the permanent magnet is accordingly arranged
The inclination angle between the flat surfaces of a plurality of slit and the permanent magnet is big.
According to this structure, the magnetic flux occurred near the end close to rotor outer circle side face have adjusted.Therefore, at this
In magneto, the torque excursion occurred during rotor rotates diminishes.
Meanwhile, in the so-called " strip of such as rectangle or class with shape, ellipse (oval, Long Circle), arc or the like
In shape ", " longitudinal direction " mentioned here represents the long side direction of rectangle or class with shape, the long axis direction or arc of ellipse
Circumference.
In addition, in the magneto with said structure, near the end of the permanent magnet include with it is described
The a plurality of slit for the slit that the end of permanent magnet is accordingly arranged, positioned at the described narrow of inner side on slit arrangement direction
The distance between the end of the outer circumference surface of the close rotor of seam and the outer circumference surface of the rotor are more than and the permanent magnetism
The end of the outer circumference surface of the close rotor for the slit that the end of body is accordingly arranged and the rotor it is cylindrical
The distance between side face.
According to this structure, from the slit corresponding with the end of permanent magnet to the distance of rotor outer circle side face with from narrow
The slit that seam arranged direction is located at inner side produces difference between the distance of rotor outer circle side face.Therefore, it have adjusted and turn close
The magnetic flux occurred near the end of sub- outer circumference surface.
In addition, in the permanent magnet with said structure, two ends for being present in the permanent magnet of the permanent magnet
Between and the surface relative with the outer circumference surface of the rotor is flat surfaces；And for including the end with the permanent magnet
The a plurality of slit for the slit accordingly arranged, the length in the axial direction of respective section is equal to each other.
According to this structure, rotor is generally cylindrical, therefore, including the slit accordingly arranged with permanent magnet end
A plurality of slit it is each different with the distance between rotor outer circle side face.Thus, it have adjusted close to rotor outer circle week
The magnetic flux occurred near the end in face.
Beneficial effect
According to the present invention, in magneto, the magnetic occurred near the end of the close rotor outer circle side face of permanent magnet
Flux is adjusted, and the torque excursion occurred during rotor rotates can be made to diminish.Can therefore, it is possible to provide one kind
Effectively suppress the magneto of torque ripple occurred during rotor rotates.
Brief description of the drawings
Fig. 1 is the profile of magneto according to a first embodiment of the present invention.
Fig. 2 is the profile of the rotor of magneto according to a first embodiment of the present invention.
Fig. 3 is that the part of permanent magnet in the rotor profiles of magneto according to a first embodiment of the present invention and slit is put
Big figure.
Fig. 4 is to show relation between the rotor anglec of rotation of magneto according to a first embodiment of the present invention and torque
Curve map.
Fig. 5 is the profile of the rotor of the magneto of comparative examples.
Fig. 6 is the magnified partial view of permanent magnet in the rotor profiles of the magneto of comparative examples and slit.
Fig. 7 is the curve map of relation between the rotor anglec of rotation for the magneto for showing comparative examples and torque.
Fig. 8 is that the part of permanent magnet in the rotor profiles of magneto according to a second embodiment of the present invention and slit is put
Big figure.
Fig. 9 is that the part of permanent magnet in the rotor profiles of magneto according to a third embodiment of the present invention and slit is put
Big figure.
Embodiment
Hereinafter, embodiments of the invention are described based on Fig. 1 to Fig. 9.
First, the structure of magneto according to a first embodiment of the present invention is schematically described using Fig. 1.Fig. 1 be this forever
The profile of magneto.
As shown in figure 1, magneto 1 includes the stator 10 as stator component and the rotor 20 as rotor part.
Stator 10 includes stator core 11, and stator core 11 is made up of ring magnetic material.Stator core 11 includes the stator of annular
The stator tooth 13 that yoke 12 and inner circumference portion from stator yoke 12 are diametrically protruded inwardly.The diametrically position of stator tooth 13
Tip end portion in inner side is relative with the outer circumference surface of rotor 20 across gap.
For example, quantity for 6 stator tooth 13 along magneto 1 circumferentially.In other words, stator 10 is provided with 6 grooves
14.Stator tooth 13 is for example, by being laminated multi-disc steel disc and one along electrical axis direction (direction vertical with paper in Fig. 1)
Formed.
The insulator (not shown) for being formed from an electrically-insulative material and being used to constitute roll (bobbin) is arranged on stator tooth
On 13 excircle.In addition, the coil 15 of the electric wire including being wound along electrical axis direction is formed in insulator exterior and formation
In groove 14.Electric current flows to rotate and drive rotor 20 in coil 15.
As shown in figure 1, rotor 20 is the rotor formed by the magnetic material of general cylindrical, and it is rotatably disposed within calmly
In son 10.Rotor 20 includes rotary shaft 21 and the rotor core of the periphery of rotary shaft 21 is fixed in the way of it can not offset
22。
Motor case (not shown) etc. pivotally supports rotary shaft 21 by two bearing (not shown) two ends.
In addition, in another example, rotary shaft 21 is supported in a cantilevered fashion an end by bearing etc..Meanwhile, turn
Sub- axis direction is identical with electrical axis direction, and extends along the direction vertical with Fig. 1 paper.Permanent magnet 23 is embedded in rotor
In core 22.
Then, rotor 20 is more fully described using Fig. 2 outside Fig. 1 to Fig. 4.Fig. 2 is the rotor 20 of magneto 1
Profile, Fig. 3 is the magnified partial view of permanent magnet 23 in the section of rotor 20 and slit, and Fig. 4 represents magneto 1
The curve map of relation between the rotor anglec of rotation and torque.
The rotor core 22 of rotor 20 has structure as shown in Figure 2, and N poles and both magnetic poles of S poles are alternately circumferentially
It is arranged in whole circumference.The number of magnetic poles of rotor core 22 is 4.Each magnetic pole of rotor core 22 is provided with permanent magnet insert port
24, and permanent magnet 23 is embedded in permanent magnet insert port 24.
Permanent magnet 23 has the rectangular cross-sectional shape vertical with rotor axis direction, is arranged in and using the axle center of rotor 20 in
At the corresponding part in each bar side of the quadrangle of the heart, and the outer circumference surface at their both ends close to rotor 20.Permanent magnetism
The section of body insert port 24 have such as trapezoidal shape, its size allow permanent magnet 23 insert, and permanent magnet insert port 24 along turn
Sub- axis direction opening.Permanent magnet 23 is inserted into permanent magnet insert port 24 with consistent with permanent magnet insert port 24 along rotor
Axis direction extends, so as to be embedded.Meanwhile, Fig. 2 illustrates permanent magnet 23 as described herein and permanent magnet insert port 24
Section.
Permanent magnet 23 is contacted between longitudinal two end along section with the inner surface of permanent magnet insert port 24.And
And, space part 25 is disposed with permanent magnet insert port 24, space part 25 is adjacent to longitudinal two along section of permanent magnet 23
Individual end, and close to the outer circumference surface of rotor 20.The section shape of space part 25 has for example triangular shaped, and space part
25 along rotor axis direction opening.
Slit 26 is arranged between the outer circumference surface of rotor 20 and permanent magnet 23.The section shape of slit 26 is strip,
Long Circle that is i.e. vertical with rotor axis direction and extending from the part near permanent magnet to rotor outer circle side face, and slit 26
Section shape is along rotor axis direction opening.In addition, a plurality of slit 26 is arranged along the neighbouring compartment of terrain of permanent magnet 23.Change speech
It, quantity is arranged for 6 slit 26 for each permanent magnet 23.
As shown in figure 3, among 6 slits close to a permanent magnet 23, for two class slit 26a and 26b, (it includes
The slit 26a accordingly arranged with two ends of permanent magnet 23 respectively), the longitudinal direction of respective section is generally put down each other
OK.Meanwhile, the bearing of trend of Fig. 3 chain-dotted line (one-dot-one-bar lines) represents cuing open for two class slit 26a and 26b
The longitudinal direction in face.
Also, the respective each ends near rotor circumference face of slit 26a and 26b and the outer circumference surface of rotor 20
The distance between Xa and Xb it is different.In other words, (on slit arrangement direction positioned at inner side) slit 26b close rotor
The distance between the end of outer circumference surface and the outer circumference surface of rotor 20 Xb are more than (accordingly to be arranged with the end of permanent magnet 23
) the distance between the outer circumference surface of the end of slit 26a close rotor outer circle side face and rotor 20 Xa.
In other words, surface 23a be present in it is between two ends of permanent magnet 23 and relative with the outer circumference surface of rotor 20
Flat surfaces, and for two class slit 26a and 26b near the end of permanent magnet 23, the length along longitudinal direction of respective section that
This is equal.So, it is above-mentioned big apart from Xa apart from Xb ratios.
Fig. 4 is represented in the rotation of magneto 1 of the structure with this embodiment, between the rotor anglec of rotation and torque
Relation curve map.The transverse axis of curve map represents the anglec of rotation in 0 degree to 90 degree of scope of rotor 20, and curve map
The longitudinal axis represent the torque accordingly occurred with the anglec of rotation of rotor 20.Accordingly, it is possible to understand that torque is with every 30 degree of turn
The sub- anglec of rotation changes in the excursion Tr1 between maximum and minimum value.
Here, the magneto of the comparative examples as the magneto 1 of above-described embodiment is described using Fig. 5 to Fig. 7.
Fig. 5 is the profile of the rotor of the magneto of comparative examples, Fig. 6 be the magneto of comparative examples rotor profiles in forever
The magnified partial view of magnet and slit, and Fig. 7 is between the rotor anglec of rotation for the magneto for representing comparative examples and torque
The curve map of relation.Meanwhile, the basic structure of comparative examples is identical with the first embodiment described using Fig. 1 to Fig. 4, therefore,
Omit the description with the common part of above-described embodiment.
As shown in figure 5, the rotor 120 of the magneto of comparative examples includes rotary shaft 121 and rotor core 122.Rotor core
122 each magnetic pole is provided with permanent magnet insert port 124, and permanent magnet 123 is embedded in permanent magnet insert port 124.
Slit 126 is arranged between the outer circumference surface of rotor 120 and permanent magnet 123.The section of slit 126 has Long Circle
Shape, the section shape is vertical with rotor axis direction and extends from the point near permanent magnet to rotor outer circle side face.
Also, (it includes relative with the end of permanent magnet 123 respectively as shown in fig. 6, for two class slit 126a and 126b
Answer the slit 126a of ground arrangement), each slit 126a and the 126b each end being located near rotor circumference face and rotor 20
The distance between outer circumference surface Ya and Yb it is substantially mutually the same.
Fig. 7 is represented in the magneto rotation of the structure with comparative examples, between the rotor anglec of rotation and torque
The curve map of relation.Accordingly, it is possible to understand that torque is with every 30 degree of the rotor anglec of rotation between maximum and minimum value
Excursion Tr0 in change.
Also, torque excursion Tr1 when being rotated by comparing the magneto 1 in above-described embodiment shown in Fig. 4
The torque excursion Tr0 in the magneto rotation of comparative examples with shown in Fig. 7, goes out in the magneto of embodiment
Existing torque excursion Tr1 is about the 40% of the torque excursion Tr0 occurred in the magneto of comparative examples.
As described above, in magneto 1, for two class slit 26a (it include with the end of permanent magnet 23 accordingly
2 slit 26a of arrangement) and 26b, the longitudinal direction of respective section is substantially parallel to each other, and slit 26a and 26b is respective is located at
The distance between the outer circumference surface of each end and rotor 20 near rotor circumference face Xa and Xb is different, therefore, adjustment
The magnetic flux that occurs near the end of the close rotor outer circle side face of permanent magnet 23.Thus, can in magneto 1
The torque excursion occurred during rotor rotates is set to diminish.
In addition, the end of the close rotor outer circle side face by making (positioned at inner side on slit arrangement direction) slit 26b
The distance between portion and the outer circumference surface of rotor 20 Xb is more than (accordingly being arranged with the end of permanent magnet 23) slit 26a's
The distance between outer circumference surface close to the end of rotor outer circle side face and rotor 20 Xa, can produced between Xa and Xb it is poor
It is different.Therefore, in magneto 1, the magnetic occurred near the end of the close rotor outer circle side face of permanent magnet 23 can be adjusted
Flux.
In addition, in cylindrical rotor 20, the surface 23a of permanent magnet 23 is relative with the outer circumference surface of rotor 20 flat
Surface, and for two class slit 26a and 26b near the end of permanent magnet 23, the length along longitudinal direction of respective section is equal to each other,
Thus the distance between outer circumference surface of each slit and rotor 20 produces difference.Therefore, in magneto 1, it can adjust
The magnetic flux occurred near the end of the close rotor outer circle side face of permanent magnet 23.
Also, structure according to the abovementioned embodiments of the present invention, in magneto 1, to turning in the close of permanent magnet 23
The magnetic flux occurred near the end of sub- outer circumference surface is adjusted, and can change the torque occurred during rotor rotates
Scope diminishes.Therefore, it is possible to provide the magneto 1 that can effectively suppress to appear in the torque ripple during rotor rotates.
Below, the magneto using Fig. 8 descriptions according to a second embodiment of the present invention.Fig. 8 is that the rotor of magneto is cutd open
The magnified partial view of permanent magnet and slit in face.Meanwhile, the basic structure of the present embodiment with described using Fig. 1 to Fig. 7 the
One embodiment is identical, therefore, by identical reference marker mark and the common part of first embodiment, and omits the explanation of accompanying drawing
And description.
As shown in figure 8, being wrapped according to the magneto of second embodiment between the outer circumference surface and permanent magnet 23 of rotor 20
Include slit 27.Quantity is arranged for 8 slit 27 for each permanent magnet 23.
In 8 slits 27, for three class slit 27a, 27b and 27c, (it includes two ends respectively with permanent magnet 23
The slit 27a that portion is accordingly arranged), the longitudinal direction of respective section is substantially parallel to each other.Meanwhile, the dashdotted of Fig. 8 prolongs
Stretch the longitudinal direction that direction represents two slits 27a, 27b and 27c section.
Also, the respective each end and rotor 20 near rotor circumference face of slit 27a, 27b and 27c is outer
The distance between periphery Ua, Ub and Uc are different.In other words, the slit (positioned at inner side on slit arrangement direction)
The distance between each end of 27b and 27c close rotor outer circle side face and the outer circumference surface of rotor 20 Ub and Uc be more than (with
What the end of permanent magnet 23 was accordingly arranged) end of slit 27a close rotor outer circle side face and the excircle of rotor 20
The distance between face Ua.
In other words, surface 23a is the flat surfaces being present between two ends of permanent magnet 23, and outer with rotor 20
Periphery is relative, and for two slits 27a, 27b and 27c near the end of permanent magnet 23, the length along longitudinal direction of respective section
Degree is equal to each other.So, it is above-mentioned to be more than apart from Ub and Uc apart from Ua.
For the structure of second embodiment, even if in the case where there, also have adjusted outside the close rotor of permanent magnet 23
The magnetic flux that the end of periphery occurs：For three class slit 27a, (it includes relative with two ends of permanent magnet 23 respectively
Should ground arrangement slit 27a), 27b and 27c, the longitudinal direction of respective section is generally parallel to one another, and slit 27a, 27b and 27c
The distance between the respective end near the rotor circumference face and the outer circumference surface of the rotor 20 mutual not phase of Ua, Ub and Uc
Together.Thus, in magneto 1, the torque excursion during can making to appear in rotor rotation diminishes.
In addition, the close rotor outer circle side face by making (positioned at inner side on slit arrangement direction) slit 27b and 27c
The distance between end and the outer circumference surface of rotor 20 Ub and Uc be more than (accordingly being arranged with the end of permanent magnet 23)
The distance between the end of slit 27a close rotor outer circle side face and the outer circumference surface of rotor 20 Ua, can make apart from Ua, Ub
Difference is produced between Uc.Therefore, in magneto 1, it can adjust in the end of the close rotor outer circle side face of permanent magnet 23
The magnetic flux nearby occurred.
Below, the magneto of third embodiment of the invention is described using Fig. 9.During Fig. 9 is the rotor profiles of magneto
Permanent magnet and slit magnified partial view.Meanwhile, first that basic structure and use Fig. 1 to Fig. 7 of the present embodiment are described is real
Apply example identical, therefore, by identical reference marker mark and the common part of first embodiment, and omit their explanation.
As shown in figure 9, being wrapped according to the magneto of 3rd embodiment between the outer circumference surface and permanent magnet 23 of rotor 20
Include slit 28.Quantity is arranged for 6 slit 28 for each permanent magnet 23.
Among 6 slits 28, for two class slit 28a and 28b, (it includes two end phases respectively with permanent magnet 23
The slit 28a accordingly arranged), the longitudinal direction of respective section is substantially parallel to each other.Meanwhile, Fig. 9 dashdotted bearing of trend
Represent the longitudinal direction of two class slit 28a and 28b section.
Also, the respective each ends near rotor circumference face of slit 28a and 28b and the outer circumference surface of rotor 20
The distance between Ta and Tb it is different.In other words, (accordingly arrange) that slit 28a's is close with the end of permanent magnet 23
The distance between the end of rotor outer circle side face and the outer circumference surface of rotor 20 Ta are more than (is located at inner side on slit arrangement direction
) the distance between the end of slit 28b close rotor outer circle side face and the outer circumference surface of rotor 20 Tb.
For the structure of 3rd embodiment, even if in the case where there, also producing difference between Ta and Tb：(with forever
What the end of magnet 23 was accordingly arranged) end of slit 28a close rotor outer circle side face and the outer circumference surface of rotor 20
The distance between Ta be more than (on slit arrangement direction positioned at inner side) slit 28b close rotor outer circle side face end and
The distance between the outer circumference surface of rotor 20 Tb.Therefore, it is possible to adjust in the end of the close rotor outer circle side face of permanent magnet 23
Locate the magnetic flux occurred.
Hereinbefore, embodiments of the invention are described.However, the present invention is not limited to these embodiments, and can be
A variety of modifications are added in the case of without departing substantially from spirit of the invention, and they are put into practical application.
For example, the shape and quantity of permanent magnet 23, permanent magnet insert port 24 and slit 26 are not limited to above example
Used in shape and quantity, it is possible to use other shapes and quantity.
In addition, for being arranged at the position corresponding with each bar side of the quadrangle centered on the axle center of rotor 20
Permanent magnet 23, the polygon is not limited to the quadrangle of above example, with can be used hexagon and octagon etc. other
Polygon.
In addition, in the embodiment above, for two classes near the end of permanent magnet 23 or three class slits, respective section it is vertical
To being substantially parallel to each other, and each distance between the end in rotor circumference face and rotor outer circle side face of each slit is mutual
Differ.But, it could dictate that the slit of more than four near the end of permanent magnet 23.In such circumstances it is desirable to ten with
On slit separation arranged along permanent magnet 23.
Industrial applicibility
The present invention is applied to the magneto with the rotor for being embedded with permanent magnet.
Reference numerals list
1 magneto
10 stators
20 rotors
21 rotary shafts
22 rotor cores
23 permanent magnets
24 permanent magnet insert ports
25 space parts
26th, 27,28 slit
Claims (3)
1. a kind of magneto, it includes：
Permanent magnet, it is arranged at the position corresponding with the polygonal each edge centered on the axle center of rotor, and along institute
State the axis direction insertion of rotor in the rotor so that excircle of two ends of the permanent magnet close to the rotor
Face；And
A plurality of slit, it is arranged between the outer circumference surface of the rotor and the permanent magnet and along magnet compartment of terrain cloth
Put, the section shape of every slit perpendicular to the rotor axis direction, with described turning from the permanent magnet is lateral
The strip of the excircle surface side extension of son, and along the axis direction opening of the rotor,
The permanent magnet being present between the two ends and surface relative with the outer circumference surface of the rotor is flat
Smooth surface,
Slit described in central portion between two ends of the permanent magnet accordingly arrange a pair is respective described
The longitudinal length of section is longer than other slits,
Wherein, near two ends of the permanent magnet include it is corresponding with two ends of the permanent magnet
The a plurality of slit including the slit of ground arrangement has more than two pairs, passed through with the central portion in the permanent magnet described in
The radius of rotor is that symmetry axis constitutes a pair of slits by two slits in line symmetry,
The a plurality of respective section of slit in two ends of the permanent magnet near the same end
Longitudinal direction is parallel to each other, and end and the outer circumference surface of the rotor of the respective outer circumference surface close to the rotor of the slit
The distance between it is different,
All slits from the axis direction of the rotor, two towards the permanent magnet of all slit
The direction of central portion between the end is tilted, and the longitudinal direction of the section of the slit is described flat with the permanent magnet
Angle between surface constitutes inclination angle, the slit accordingly arranged with the central portion of the permanent magnet with it is described forever
The inclination angle between the flat surfaces of magnet than including the end with the permanent magnet accordingly arrange it is narrow
The inclination angle between a plurality of slit and the flat surfaces of the permanent magnet that are sewn near the interior end
Greatly.
2. magneto as claimed in claim 1, wherein,
For near two ends of the permanent magnet include with two ends of the permanent magnet accordingly
The a plurality of slit including the slit of arrangement, is located at the close rotor of the slit of inner side on slit arrangement direction
The end of outer circumference surface and the distance between the outer circumference surface of the rotor be more than with the end of the permanent magnet accordingly
The distance between the end of the outer circumference surface of the close rotor of the slit of arrangement and the outer circumference surface of the rotor.
3. magneto as claimed in claim 1 or 2, wherein,
For a plurality of slit including the slit including accordingly being arranged with the two of the permanent magnet end, respectively
It is equal to each other from the length in the axial direction of section.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011281044A JP2013132164A (en) | 2011-12-22 | 2011-12-22 | Permanent magnet motor |
| JP2011-281044 | 2011-12-22 | ||
| PCT/JP2012/079608 WO2013094349A1 (en) | 2011-12-22 | 2012-11-15 | Permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103999331A CN103999331A (en) | 2014-08-20 |
| CN103999331B true CN103999331B (en) | 2017-08-11 |
Family
ID=48668248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280061396.XA Expired - Fee Related CN103999331B (en) | 2011-12-22 | 2012-11-15 | Magneto |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2013132164A (en) |
| CN (1) | CN103999331B (en) |
| IN (1) | IN2014CN04509A (en) |
| TW (1) | TWI555307B (en) |
| WO (1) | WO2013094349A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6280761B2 (en) * | 2014-02-10 | 2018-02-14 | 山洋電気株式会社 | Stator core and permanent magnet motor |
| CN106100179B (en) * | 2016-06-29 | 2019-11-08 | 沈阳工业大学 | Permanent magnet rotor with reluctance slot |
| WO2018207277A1 (en) * | 2017-05-10 | 2018-11-15 | 三菱電機株式会社 | Stator, electric motor, compressor, refrigeration air conditioning device, and method for producing stator |
| US11004586B2 (en) * | 2017-09-15 | 2021-05-11 | Siemens Gamesa Renewable Energy A/S | Permanent magnet for a permanent magnet machine |
| CN111903038B (en) * | 2018-04-10 | 2023-11-28 | 三菱电机株式会社 | Motor, compressor and air conditioning device |
| US11552515B2 (en) | 2018-06-25 | 2023-01-10 | Mitsubishi Electric Corporation | Rotor, motor, fan, and air conditioner |
| JP7053392B2 (en) * | 2018-07-13 | 2022-04-12 | オークマ株式会社 | Rotor of synchronous motor |
| CN108711968B (en) * | 2018-07-13 | 2024-08-30 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN110299773A (en) * | 2019-08-02 | 2019-10-01 | 珠海格力电器股份有限公司 | Rotor assembly and alternating-pole motor |
| CN114552824B (en) * | 2019-08-26 | 2023-11-10 | 安徽美芝精密制造有限公司 | Rotor, motor, compressor and refrigeration equipment |
| TWI749556B (en) * | 2020-05-18 | 2021-12-11 | 姚立和 | Motor structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853330A (en) * | 2003-09-19 | 2006-10-25 | 东芝开利株式会社 | Permanent magnet motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001037127A (en) * | 1999-07-26 | 2001-02-09 | Toshiba Corp | Permanent magnet type motor |
| JP2001083168A (en) * | 1999-09-16 | 2001-03-30 | Suzuki Motor Corp | Rotation detector for propeller |
| JP5478136B2 (en) * | 2009-07-15 | 2014-04-23 | 三菱電機株式会社 | Permanent magnet synchronous motor |
| JP5208084B2 (en) * | 2009-10-09 | 2013-06-12 | 三菱電機株式会社 | Rotor, blower and compressor of embedded permanent magnet motor |
| JP5419991B2 (en) * | 2009-11-17 | 2014-02-19 | 三菱電機株式会社 | Permanent magnet synchronous motor |
| JP5061207B2 (en) * | 2010-03-05 | 2012-10-31 | 株式会社日立産機システム | Permanent magnet synchronous machine |
-
2011
- 2011-12-22 JP JP2011281044A patent/JP2013132164A/en active Pending
-
2012
- 2012-11-15 CN CN201280061396.XA patent/CN103999331B/en not_active Expired - Fee Related
- 2012-11-15 WO PCT/JP2012/079608 patent/WO2013094349A1/en active Application Filing
- 2012-12-12 TW TW101147034A patent/TWI555307B/en not_active IP Right Cessation
-
2014
- 2014-06-17 IN IN4509CHN2014 patent/IN2014CN04509A/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853330A (en) * | 2003-09-19 | 2006-10-25 | 东芝开利株式会社 | Permanent magnet motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013132164A (en) | 2013-07-04 |
| WO2013094349A1 (en) | 2013-06-27 |
| TWI555307B (en) | 2016-10-21 |
| CN103999331A (en) | 2014-08-20 |
| TW201338353A (en) | 2013-09-16 |
| IN2014CN04509A (en) | 2015-09-11 |
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