CN105914911B - Stator, motor and air conditioner - Google Patents
Stator, motor and air conditioner Download PDFInfo
- Publication number
- CN105914911B CN105914911B CN201610452298.9A CN201610452298A CN105914911B CN 105914911 B CN105914911 B CN 105914911B CN 201610452298 A CN201610452298 A CN 201610452298A CN 105914911 B CN105914911 B CN 105914911B
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- stator
- flume structure
- flume
- motor
- stator core
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of stator, motor and air conditioners, wherein stator includes: multiple stator cores, and multiple stator cores interconnect and form ring structure；Flume structure, be arranged in stator core towards on the surface of the center line of ring structure, wherein, flume structure includes the first flume structure and the second flume structure, the inclined direction of the inclined direction of first flume structure and the second flume structure is opposite, it is provided with the first flume structure on a part of stator core in multiple stator cores, the second flume structure is provided on another part stator core.Technical solution of the present invention solves motor in the prior art and is also easy to produce cogging torque, and the problem of influence the performance of motor.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, in particular to a kind of stator, motor and air conditioner.
Background technique
With the continuous promotion of permanent magnetic material performance, permanent-magnet brushless DC electric machine is applied to high performance more and more widely
Speed and position control system.However in permanent-magnet brushless DC electric machine, when rotor is there are when relative motion, it is in permanent magnet
Magnetic conductance between the stator iron core tooth and permanent magnet of polar arc part is basically unchanged, therefore the magnetic field around stator iron core tooth and basic
It is constant, and in a bit of region being made of one or two tooth corresponding with the two sides of permanent magnet, magnetic conductance changes greatly, draws
The variation of magnetizing field energy storage leads to torque ripple to generate cogging torque, causes vibration and noise, influences the control of system
Precision.Therefore, reducing cogging torque must be solved and consider during high-performance permanent magnet brshless DC motor manufactures and designs
Problem.
Summary of the invention
The main purpose of the present invention is to provide a kind of stator, motor and air conditioners, to solve motor in the prior art
The problem of being also easy to produce cogging torque, and influencing the performance of motor.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of stator, comprising: multiple stator iron
Core, multiple stator cores interconnect and form ring structure；Flume structure, be arranged in stator core towards ring structure
On the surface of center line, wherein flume structure includes the first flume structure and the second flume structure, the inclination of the first flume structure
The inclined direction of direction and the second flume structure is on the contrary, be provided with first tiltedly on a part of stator core in multiple stator cores
Slot structure is provided with the second flume structure on another part stator core.
Further, flume structure is provided on each stator core.
Further, the first flume structure is multiple, and the second flume structure is multiple.
Further, one or more the second flume structure is provided between two adjacent the first flume structures.
Further, the end face at the both ends along centerline direction of the both ends perforation stator core of flume structure.
Further, the cross section of flume structure is polygon or circle.
Further, each first flume structure is equal with the angle of center line.
Further, each second flume structure is equal with the angle of center line.
Further, the first flume structure is equal with the quantity of the second flume structure.
Further, stator core includes: inner panel and outside plate；Wire-wrap board, connection is between the inner plate and the outer plate, wherein tiltedly
Slot structure is arranged on the surface towards center line of inner panel.
According to another aspect of the present invention, a kind of motor, including stator are provided, stator is above-mentioned stator.
According to another aspect of the present invention, a kind of air conditioner, including motor are provided, motor is above-mentioned motor.
It applies the technical scheme of the present invention, by the way that flume structure is arranged on the stator core of stator, can effectively drop
The cogging torque of low motor.Flume structure includes opposite the first flume structure and the second flume structure of inclined direction simultaneously, because
This air can make stator keep stress balance after flowing through the first flume structure and the second flume structure, so that motor
What is operated is more stable.Therefore technical solution of the present invention solves motor certainly in the prior art and is also easy to produce cogging torque, and
The problem of influencing the performance of motor.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic perspective view of the embodiment of stator according to the present invention；
Fig. 2 shows the air circulation schematic diagrames of Fig. 1 stator；
Fig. 3 shows the expanded schematic diagram of the stator core of stator in Fig. 1；
Fig. 4 shows the schematic front view of stator in Fig. 3；And
Fig. 5 shows the schematic top plan view of stator in Fig. 3.
Wherein, the above drawings include the following reference numerals:
10, stator core；11, inner panel；12, outside plate；13, wire-wrap board；20, flume structure；21, the first flume structure；22,
Second flume structure.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the application and its application or making
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall in the protection scope of this application.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited scope of the present application processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
In the description of the present application, it is to be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System is merely for convenience of description the application and simplifies description, and in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is the limitation to the application protection scope；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
Apply for the limitation of protection scope.
With the continuous promotion of permanent magnetic material performance, permanent-magnet brushless DC electric machine is applied to high performance more and more widely
Speed and position control system.However in permanent-magnet brushless DC electric machine, when rotor is there are when relative motion, it is in permanent magnet
Magnetic conductance between the stator iron core tooth and permanent magnet of polar arc part is basically unchanged, therefore the magnetic field around stator iron core tooth and basic
It is constant, and in a bit of region being made of one or two tooth corresponding with the two sides of permanent magnet, magnetic conductance changes greatly, draws
The variation of magnetizing field energy storage leads to torque ripple to generate cogging torque, causes vibration and noise, influences the control of system
Precision.Therefore, reducing cogging torque must be solved and consider during high-performance permanent magnet brshless DC motor manufactures and designs
Problem.This application provides a kind of stator that can reduce cogging torque, specific structure is as follows:
As shown in Figure 1, a kind of stator of the present embodiment includes multiple stator cores 10 and flume structure 20.Wherein, multiple
Stator core 10 interconnects and forms ring structure.Flume structure 20 be arranged in stator core 10 towards in ring structure
On the surface of heart line, flume structure 20 includes the first flume structure 21 and the second flume structure 22, and the first flume structure 21 inclines
The inclined direction of tilted direction and the second flume structure 22 on a part of stator core 10 in multiple stator cores 10 on the contrary, be arranged
There is the first flume structure 21, the second flume structure 22 is provided on another part stator core 10.
Using the technical solution of the present embodiment, by the way that flume structure 20, Neng Gouyou is arranged on the stator core 10 of stator
Effect ground reduces the cogging torque of motor.Flume structure 20 includes that the first opposite flume structure 21 and second of inclined direction is oblique simultaneously
Slot structure 22, therefore air can make stator keep stress flat after flowing through the first flume structure 21 and the second flume structure 22
Weighing apparatus, so that motor operating is more stable.Therefore the technical solution of the present embodiment solves motor certainly in the prior art
The problem of being also easy to produce cogging torque, and influencing the performance of motor.
It should be noted that above-mentioned inclined direction refers on the contrary, with the first flume structure 21 and the second flume structure 22
Upper end for, the upper end of the first flume structure 21 deflection to the left, the upper end of the second flume structure 22 deflection to the right.Therefore first
Flume structure 21 is to be tilted to the left, and the second flume structure 22 is to be tilted to the right.
Flume structure 20, which is described below, reduces the principle of motor cogging torque.
There is no the magnetic field energy of the motor gas-gap of flume structure 20 and permanent magnetism weight are as follows:
Formula 1:
There is no the motor cogging torque expression formula of flume structure 20 are as follows:
Formula 2:
Magnetic field energy when flume structure 20 is set, in motor gas-gap and permanent magnet are as follows:
Formula 3:
When flume structure 20 is set, cogging torque expression formula are as follows:
Formula 4:
In above-mentioned formula: Br(θ) is permanent magnet residual magnetism；δ (θ, α) is effective air gap length；hm(θ) fills for permanent magnet
Magnetic direction length is distributed in the circumferential direction；Angle of the α between tooth center and permanent magnet center, the i.e. relative position of rotor；
La is that stacked stator core is high；Z is stator core slot number；R1、R2Respectively stator core outer diameter and stator yoke inside radius；P is extremely right
Number；N is the integer for making nz/2p integer；NSFor skewed slot number；θS1The stator tooth indicated with radian away from.
It can be seen from formula 1 and formula 2 when not set flume structure 20, each term coefficient of cogging torque is intrinsic coefficient,
Cogging torque can only be reduced by other means but can not be 0.Flume structure 20 it can be seen that, is arranged by formula 2 and formula 3
Afterwards, cogging torque can eliminate n-th harmonic therein, only need to enableIt is 0, i.e. NSForIntegral multiple.In selection NS
When, it first has to weaken number to be Np(NpFor number of poles, the ratio of slot number and number of poles greatest common divisor) cogging torque harmonic wave, i.e.,HaveIt can be seen that working asWhen, as long as controlling skewed slot inclined teeth
Away from each cogging torque harmonic wave can be eliminated, that is, cogging torque is not present.But it should be recognized that engineering in practice, pass through
Optimize above-mentioned parameter can reduction cogging torque as far as possible, but cogging torque can not be completely eliminated.E=4.44Nkf Φ,
Wherein E is back EMF coefficient, and N is umber of turn, and f is electric frequency, and Φ is magnetic flux.Stator core oblique notches, and wherein N, K, f are equal
Constant, the amplitude of Φ reduces, therefore counter electromotive force reduces.
As shown in Fig. 2, in the technical scheme of this embodiment, being provided with flume structure 20 on each stator core 10.
Specifically, cogging torque can be effectively reduced by being respectively provided with flume structure 20 on each stator core 10.Certainly, it is being not shown
Embodiment in.Flume structure 20 can also be provided in a part in multiple stator cores 10.Flume structure 20
Specific set-up mode those skilled in the art can need to determine according to real work.
As shown in Fig. 2, in the technical scheme of this embodiment, the first flume structure 21 is multiple, the second flume structure 22
It is multiple.Specifically, the component that air generates when through the first flume structure 21 and the second flume structure 22 is on the contrary, therefore more
The operation that a first flume structure 21 and multiple second flume structures 22 can allow motor more stable.
As depicted in figs. 1 and 2, in the technical scheme of this embodiment, it is set between two adjacent the first flume structures 21
It is equipped with one or more the second flume structure 22.Preferably, the first flume structure 21 and the second skewed slot knot in the present embodiment
Structure 22 is successively arranged.Above structure enables to the first flume structure 21 and the second flume structure 22 to join end to end and formed logical
Road.Air-flow can be flowed when passing through the first flume structure 21 and the second flume structure 22 in access, so that the stream of air-flow
It is dynamic more gentle, and be conducive to the even running of motor.Specifically, the dotted line in Fig. 2 is air-flow in the first flume structure 21
With the flow direction schematic diagram of the second flume structure 22, from fig. 2 it can be seen that air-flow from the lower end of the first flume structure 21 flow
It enters to the lower end of the second flume structure 22 after out, and is entering to adjacent the after the outflow of the upper end of the second flume structure 22
One flume structure 21, and ultimately form and circulate.Certainly, the arrangement of the first flume structure 21 and the second flume structure 22
It is without being limited thereto, in a not shown embodiment, multiple second skewed slots also can be set between the first adjacent flume structure 21
Structure 22.
As shown in Figures 3 to 5, in the technical scheme of this embodiment, the both ends of flume structure 20 penetrate through stator core 10
The both ends along centerline direction end face.Fig. 3 is the expanded schematic diagram of the stator core 10 of stator in Fig. 1.It can from Fig. 4
It arrives, two end faces of the up and down direction of the both ends perforation stator core 10 of flume structure 20.
As shown in figure 5, in the technical scheme of this embodiment, the cross section of flume structure 20 is polygon or circle.
Sectional view those skilled in the art of flume structure 20 can need to determine according to real work.
As shown in Figure 1 and Figure 4, each first flume structure 21 is equal with the angle of the center line of stator.Each second skewed slot knot
Structure 22 is equal with the angle of stator center line.Specifically, from fig. 4 it can be seen that after multiple stator cores 10 are unfolded, each the
It is arranged in parallel between one flume structure 21, is arranged in parallel between each second flume structure 22.Above structure makes the structure of stator
It is more regular, while being also convenient for manufacturing.
As shown in Figure 1, in the technical scheme of this embodiment, the number with the second flume structure 22 of the first flume structure 21
It measures equal.Specifically, the quantity of the first flume structure 21 and the second flume structure 22 is six.When multiple 10 rings of stator core
When being coiled into ring structure, the first flume structure 21 and 22 quantity of the second flume structure is equal can guarantee 21 He of the first flume structure
It joins end to end between second flume structure 22, and forms continuous channel.
As shown in figures 1 and 3, in the present embodiment with regard in technical solution, stator core 10 includes inner panel 11,12 and of outside plate
Wire-wrap board 13.Wire-wrap board 13 is connected between inner panel 11 and outside plate 12, wherein flume structure 20 is arranged in the direction of inner panel 11
On the surface of heart line.When multiple stator cores 10, which surround, to be circularized, inner panel 11 forms the inner ring of stator, and outside plate 12 forms stator
Outer ring.
Present invention also provides a kind of motor, the embodiment according to the motor of the application includes stator, and stator is above-mentioned
Stator.
Present invention also provides a kind of air conditioner, the embodiment according to the air conditioner of the application includes motor, and motor is upper
The motor stated.
According to above structure, the stator of the application has following characteristics:
The application is made that corresponding solution according to problems of the prior art.Different from traditional chain type stator
Iron core, the chain type stator core made in structure it is perfect, it is specific as follows:
The stator core construction is chain type such as Fig. 3, and chain type core structure high degree of automation is, it can be achieved that higher copper factor is wanted
It asks., it is equipped with stator core the first flume structure 21 and the second flume structure 22 in inner surface, the first flume structure 21 and second is oblique
Slot structure 22 is connected to two end faces up and down, and the first flume structure 21 is identical as 22 shape and structure of the second flume structure, only inclination side
To difference；Air gap is more uniform to be relative to the advantage of single direction skewed slot to biassed fabric, in practical projects, in motor
It is identical to the mobility of air and the stator of unslotted since one direction flume structure does not form access during operation,
Lead to rotor force unbalance during exercise, uneven so as to cause motor gas-gap, non-uniform air-gap also will affect tooth socket
The size and distribution of torque, the chain type iron core can Cheng Yuan, its structure of Cheng Yuanhou is as shown in Figure 1.
The structure greatly reduces cogging torque in motor operation course, and the macro manifestations of cogging torque are vibration
With noise, therefore generated vibration and noise in motor operation can be weakened using this kind of stator core construction；N, K, f not
In the case where change, magnetic flux is directly proportional to counter electromotive force, and magnetic flux, which reduces, reduces counter electromotive force, and permanent-magnet brushless DC electric machine is more at present
Using the direct speed regulating control motor of electric machine built-in control circuit, therefore there is destruction built-in control circuit electronic component in counter electromotive force
Possibility, cause motor reliability to reduce, reduce counter electromotive force, motor quality and complete machine operational reliability can be improved；
Air gap is more uniform to be relative to the advantage of single direction skewed slot to flume structure, in practical projects,
During motor operation, since one direction flume structure does not form access, the stator of mobility and unslotted to air
Iron core is identical, leads to rotor force unbalance during exercise, uneven so as to cause motor gas-gap, and non-uniform air-gap can be straight
The size and distribution for influencing cogging torque are connect, and the access of a closure is formed in the stator (such as Fig. 4 institute to the structure of skewed slot
Show), air flows in the access of formation, from the angle analysis of mechanics, can improve rotor during the motion in this way
The phenomenon that force unbalance, to keep the air gap of motor more uniform.It is more uniform in the motor gas-gap to flume structure, tiltedly
Slot will more be better than one direction flume structure to the weakening effect of cogging torque.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of stator characterized by comprising
Multiple stator cores (10), multiple stator cores (10) interconnect and form ring structure；
Flume structure (20) is arranged on the surface of the center line towards the ring structure of the stator core (10),
Wherein, the flume structure (20) includes the first flume structure (21) and the second flume structure (22), first skewed slot
The inclined direction of the inclined direction of structure (21) and second flume structure (22) is on the contrary, in multiple stator cores (10)
A part of stator core (10) on be provided with first flume structure (21), stator core (10) described in another part
On be provided with second flume structure (22),
The stator core (10) includes:
Inner panel (11) and outside plate (12)；
Wire-wrap board (13) is connected between the inner panel (11) and outside plate (12),
Wherein, the flume structure (20) setting in the inner panel (11) towards on the surface of the center line, it is each described
The flume structure (20) are provided on stator core (10).
2. stator according to claim 1, which is characterized in that first flume structure (21) be it is multiple, described second
Flume structure (22) is multiple.
3. stator according to claim 1, which is characterized in that set between first flume structure (21) of adjacent two
It is equipped with one or more second flume structure (22).
4. stator according to claim 1, which is characterized in that the both ends of the flume structure (20) penetrate through the stator iron
The end face at the both ends along the centerline direction of core (10).
5. stator according to claim 1, which is characterized in that the cross section of the flume structure (20) be polygon or
It is round.
6. stator according to claim 2, which is characterized in that each first flume structure (21) and the center line
Angle is equal.
7. stator according to claim 2, which is characterized in that each second flume structure (22) and the center line
Angle is equal.
8. stator according to claim 2, which is characterized in that first flume structure (21) with second skewed slot
The quantity of structure (22) is equal.
9. a kind of motor, including stator, which is characterized in that the stator is stator described in any item of the claim 1 to 8.
10. a kind of air conditioner, including motor, which is characterized in that the motor is motor described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610452298.9A CN105914911B (en) | 2016-06-20 | 2016-06-20 | Stator, motor and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610452298.9A CN105914911B (en) | 2016-06-20 | 2016-06-20 | Stator, motor and air conditioner |
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| Publication Number | Publication Date |
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| CN105914911A CN105914911A (en) | 2016-08-31 |
| CN105914911B true CN105914911B (en) | 2018-12-07 |
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| CN201610452298.9A Active CN105914911B (en) | 2016-06-20 | 2016-06-20 | Stator, motor and air conditioner |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494134B (en) * | 2018-06-12 | 2023-12-08 | 珠海凯邦电机制造有限公司 | Winding framework structure, motor and air conditioner |
| TWI716322B (en) * | 2020-06-01 | 2021-01-11 | 國立成功大學 | Electric mechanical structure and stator core component thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904793A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Integrated motor stator punching sheet, motor stator and rotating motor using integrated motor stator punching sheet |
| CN105322670A (en) * | 2014-07-28 | 2016-02-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core structure and motor possessing the same |
| CN205864088U (en) * | 2016-06-20 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator, motor and air-conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003018770A (en) * | 2001-06-28 | 2003-01-17 | Hitachi Ltd | Rotary electric machine |
| JP2015096024A (en) * | 2013-11-14 | 2015-05-18 | アスモ株式会社 | Core and motor |
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2016
- 2016-06-20 CN CN201610452298.9A patent/CN105914911B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904793A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Integrated motor stator punching sheet, motor stator and rotating motor using integrated motor stator punching sheet |
| CN105322670A (en) * | 2014-07-28 | 2016-02-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core structure and motor possessing the same |
| CN205864088U (en) * | 2016-06-20 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator, motor and air-conditioner |
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