CN107453498A - Stator core, motor stator, motor and compressor - Google Patents
Stator core, motor stator, motor and compressor Download PDFInfo
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- CN107453498A CN107453498A CN201710751316.8A CN201710751316A CN107453498A CN 107453498 A CN107453498 A CN 107453498A CN 201710751316 A CN201710751316 A CN 201710751316A CN 107453498 A CN107453498 A CN 107453498A
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- 239000004020 conductor Substances 0.000 claims abstract description 67
- 238000004804 winding Methods 0.000 claims abstract description 43
- 210000000515 tooth Anatomy 0.000 claims description 76
- 238000004080 punching Methods 0.000 claims description 19
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 9
- 239000012141 concentrate Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000007704 transition Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000006467 substitution reaction 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention proposes a kind of stator core, motor stator, motor and compressor, wherein, the cross section of teeth groove is configured to axially symmetric structure, each symmetrical portion includes half bottom land profile successively, the side of adjacent stator tooth, half groove top profile and half notch, half bottom land profile and half groove top profile parallel are set, there is the first angle between half bottom land profile and side, there is the second angle between half groove top profile and side, wherein, differential seat angle between first angle and 90 °, and the second differential seat angle between angle and 90 °, respectively less than specified angle, and width of rebate is D, the width of stator tooth is W, 0.3 × W≤D≤W.Pass through technical scheme, in the rectangular cross-section of conductor, the coiling volume of winding conductor can be lifted, lift the utilization rate of stator core, so as to make full use of the space between adjacent two stator tooth, the tankful rate of winding conductor is improved, in motor operation, is advantageous to the power density and operating efficiency of lifting motor.
Description
Technical field
The present invention relates to compressor field, in particular to a kind of stator core, a kind of motor stator, a kind of motor
With a kind of compressor.
Background technology
As the raising of air-conditioning Energy Efficiency Standard in compressor, it is necessary to set high power density and efficient motor, by
In the development trend of compressor of air conditioner miniaturization, for the compressor of identical operating efficiency, motor external diameter and motor height are more next
It is smaller, for example external diameter narrows down to 112mm by original 125mm, in order to realize the setting of motor miniaturization, it is also desirable to pass through raising
The power density of motor is realized, and the raising of power density, then the raising by electromagnetic steel plate performance and rotor permanent magnet physical efficiency
The raising of metric density is realized.
In order to improve the market competitiveness, the volume of compressor needs further miniaturization, for example external diameter is by current 112mm
100mm is further narrowed down to, because the performance of electromagnetic steel plate and permanent magnet is already close to the limit, it is difficult to pass through steel plate and permanent magnet
Material is replaced to realize the further lifting of power density.
In correlation technique, as shown in Figure 1 to Figure 3, by using the conductor of square-section or approximate rectangular section, instead of wide
The conductor of the circular cross-section of general use, to improve the filling rate of motor slot, and then power density is improved, still suffer from following defect：
(1) in the conductor 202' coilings of winding square-section on the more stator core 10' of teeth groove 102' quantity,
Using existing teeth groove 102' structure, being declined to a great extent using area for groove can be caused, conductor coiling can not fill in groove
Divide and fix, and then cause motor performance to deteriorate, limit application of the conductor of square-section on the more motor of slot number；
(2) because teeth groove 102' quantity is more, when using partitioned organization manufacture stator, caused additional air gap can be made
Back-emf into motor is decreased obviously, and then causes the performance degradation of motor, also limit the conductor of square-section slot number compared with
Application on more motors.
The content of the invention
At least one in order to solve the above-mentioned technical problem, it is an object of the present invention to provide a kind of stator core.
It is another object of the present invention to provide a kind of motor stator.
It is yet a further object of the present invention to provide a kind of motor.
A further object of the present invention is to provide a kind of compressor.
To achieve these goals, the embodiment of first aspect present invention proposes a kind of stator core, stator core
Multiple teeth groove are opened up on inwall, multiple teeth groove are circumferentially distributed, and respectively turn on two end faces of stator core, so that arbitrarily
Stator tooth is formed between two adjacent teeth groove, the cross section of teeth groove is configured to axially symmetric structure, and each symmetrical portion is wrapped successively
Include half bottom land profile, the side of adjacent stator tooth, half groove top profile and half notch, half bottom land profile and half groove top profile parallel
Set, there is the first angle between half bottom land profile and side, there is the second angle between half groove top profile and side, wherein,
Differential seat angle between differential seat angle between first angle and 90 °, and the second angle and 90 °, respectively less than specified angle, and groove
Mouth width is D, and the width of stator tooth is W, 0.3 × W≤D≤W.
In the technical scheme, by the cross-sectional configuration of teeth groove into axially symmetric structure, is made to be arranged in teeth groove around
Group can realize symmetrical winding, by by each symmetrical portion be arranged to include half bottom land profile of the first angle and the second angle,
The side of adjacent stator tooth, the attachment structure of half groove top profile, and the differential seat angle between the first angle and 90 ° is limited, the
Differential seat angle between two angles and 90 ° is less than specified angle, compared with arc transition set-up mode of the prior art, is arranged to
The mode at right angle or angle close to right angle, on the one hand, in the rectangular cross-section of conductor, the coiling of winding conductor can be lifted
Volume, the utilization rate of stator core is lifted, so as to make full use of the space between adjacent two stator tooth, improve expiring for winding conductor
Groove rate, in motor operation, be advantageous to the power density and operating efficiency of lifting motor, on the other hand, stator iron can be reduced
The additional air gap of in-core is attached, and then the back-emf of lifting motor, the performance of lifting motor, another further aspect, by limiting slot opening
Size relationship between degree and stator tooth width, when using when being used as winding of square-section conductor, it can realize directly in tooth
Upper carry out coiling, and then reduce the counter potential waveform aberration rate of motor, the operational efficiency of lifting motor.
For example, when being rectangle in the cross section of winding conductor, half bottom land contour line, half groove top contour line respectively with it is adjacent
The side of stator tooth when being vertically arranged, the space that the conductor of rectangle can be filled up between adjacent two stator tooth, make winding conductor
It can be brought into close contact with the inwall of teeth groove, so as to make full use of the space between adjacent two stator tooth and then the power of lifting motor
Density and operating efficiency.
Specifically, specified angle can be set as being more than or equal to 0 °, and less than or equal to 15 °, so that half bottom land profile
It is vertically arranged with the side of stator tooth, or approaches and be vertically arranged, and is vertically arranged the side of half groove top profile and stator tooth,
Or approach and be vertically arranged, the suitable configurations between realization and winding conductor.
In addition, the stator core in above-described embodiment provided by the invention can also have following additional technical feature：
In the above-mentioned technical solutions, it is preferable that the circumferential profile of the cross section of stator core by a plurality of first circular arc and/or
The straight line closed structure that joins end to end is formed, and a plurality of first circular arc has the identical center of circle.
In any of the above-described technical scheme, it is preferable that half bottom land profile is straight line and/or the second circular arc line；Half groove top wheel
Exterior feature is straight line and/or three-arc line, wherein, the second circular arc line, three-arc line and the first circular arc have the identical center of circle.
In the technical scheme, by the way that half bottom land profile is arranged into straight line and/or the second circular arc line, and by half groove top
Profile is arranged to straight line and/or three-arc line, on the one hand, when being arranged to straight line, by with side Relative vertical or close
It is vertically arranged, when using the conductor coiling of square-section, effective usable floor area of teeth groove can be lifted, lifting conductor is in groove
Fixing intensity, on the other hand, when being arranged to the second circular arc line and three-arc line, due to concentric with the first circular arc, and
The quantity of teeth groove is more, and the second circular arc line approximate can be considered as straight line with three-arc line, by with side Relative vertical or connecing
Closely it is vertically arranged, can equally lifts effective usable floor area of teeth groove.
Wherein, when half bottom land contour line and half groove top contour line are straight line, the half bottom land contour line on symmetry axis both sides
Can be conllinear, it is possible to have the angle less than 180 °, the half groove top contour line on symmetry axis both sides can be conllinear, it is possible to have
Angle less than 180 °.
In any of the above-described technical scheme, it is preferable that the Breadth Maximum of stator tooth is less than or equal to the yoke portion of stator core
Minimum widith, wherein, yoke portion is the distance between bottom land profile and corresponding circumferential profile.
In the technical scheme, the yoke portion by the way that the minimum widith of stator tooth is set greater than or equal to stator core
Minimum widith, on the one hand, can ensure that stator tooth has enough intensity, on the stator teeth during coiled conductor, in order to fully sharp
More conductors are wound with space, it is necessary to which conductor tightly winds stator tooth, now, by the way that the minimum widith of stator tooth is set greatly
Breadth Maximum in stator core yoke portion, so that it is guaranteed that stator tooth has enough intensity, be not in what stator tooth was broken off
Situation, on the other hand, it can ensure that the maximization of cell body volume is set, to lift the setting volume of winding conductor.
In any of the above-described technical scheme, it is preferable that the width of stator tooth is more than the width of teeth groove.
In any of the above-described technical scheme, it is preferable that the cross section of teeth groove is configured to rectangle or isosceles trapezoid, wherein,
When in the cross section of teeth groove being isosceles trapezoid, notch is opened at the center of the short side of isosceles trapezoid.
In the technical scheme, by by the cross-sectional configuration of teeth groove is rectangular or isosceles trapezoid, on the one hand meeting axle pair
Claim the setting demand of structure, on the other hand, in stator core preparation process, the preparation method of rectangle or isosceles trapezoid is simpler
It is single, so as to make the preparation efficiency of stator core higher.
In any of the above-described technical scheme, it is preferable that multiple teeth groove and multiple stator tooths, it is evenly distributed, and it is more
Individual tooth slot structure is identical, and multiple stator toothings are identical.
In the technical scheme, by by multiple teeth groove and multiple stator tooths, being arranged to be evenly distributed, and teeth groove
Structure is identical, and the structure of stator tooth is also identical, on the one hand, preparation technology is simpler, and the preparation efficiency of stator core is higher, another
Aspect, advantageously ensure that the runnability of motor is in preferably performance state.
In any of the above-described technical scheme, it is preferable that the quantity of teeth groove is more than or equal to 8.
In the technical scheme, by the way that the quantity of teeth groove is more than or equal into 8, on the one hand, meet the stator of multiple-grooved
The use demand of iron core, on the other hand, by the improvement to tooth slot structure, additional air gap is advantageously reduced, with lifting motor
Energy.
In any of the above-described technical scheme, it is preferable that stator core by multiple stator punchings continuously be stacked pressure solid into its
In, stator punching is silicon steel part, and the thickness of stator punching is less than 0.35mm.
In the technical scheme, stator core is by stator punching by being formed by stacking, on the one hand, mature preparation process, prepares
Product intensity is high, advantageously ensures that the service life of stator core, and then reduces production cost, on the other hand, by using silicon
Steel part is the raw material of stator punching, and the iron loss of silicon steel plate is low, and pile pieces coefficient is high, and magnetic induction intensity is good and punching is good, so as to really
The favorable working performance of stator core is protected, another further aspect, it is 0.35mm to choose silicon steel plate thickness, is ensureing rotor and stator phase interworking
Close, produce enough induced-currents with for users to use while, reduce because stator punching is blocked up, and cause larger vortex
The probability occurred is damaged, to extend the service life of motor.
The embodiment of second aspect of the present invention proposes a kind of motor stator, including：It is any such as first aspect present invention
The stator core of one embodiment；Winding conductor, around being located in the teeth groove of stator core.
In the above-mentioned technical solutions, it is preferable that the cross section of winding conductor is configured to parallelogram, rectangle, fillet
Any one in rectangle, chamfering rectangle, isosceles trapezoid.
In the technical scheme, by by the cross-sectional configuration of winding conductor into the figure with rectangle with larger similarity
Structure, on the one hand, can carry out with the teeth groove that is set in the embodiment of first aspect present invention good fit, be led with lifting winding
The winding volume of body, on the other hand, compared with the set-up mode of the conductors cross of circle, be advantageous to reduce additional air gap, from
And lifting motor performance on the whole.
Wherein, the cross section of conductor is any in parallelogram, rectangle, round rectangle, chamfering rectangle, isosceles trapezoid
It is a kind of.
In any of the above-described technical scheme, it is preferable that the width of notch, which is more than or equal to, is wrapped in the transversal of winding conductor
Twice of the width in face.
In the technical scheme, pass through the conductor width that is arranged to be wrapped in by the width of stator channel opening in stator slot
The mode of at least twice, it can ensure that conductor can be with the smooth winding for being installed on the inside of teeth groove, and being easy to conductor, to improve
The preparation efficiency of motor stator.
In any of the above-described technical scheme, it is preferable that for winding conductor to concentrate volume structure, the span of winding conductor is 1mm.
The embodiment of third aspect present invention proposes a kind of motor, including：Such as any one of second aspect of the present invention
Motor stator described in embodiment；Rotor, it is equipped with motor customization.
The motor that the embodiment of third aspect present invention provides, because including any one of second aspect of the present invention technical scheme
Described motor stator, therefore whole beneficial effects with above-mentioned motor stator, do not do state one by one herein.
The embodiment of fourth aspect present invention proposes a kind of compressor, including：Such as the embodiment of third aspect present invention
Described motor.
The compressor that the embodiment of fourth aspect present invention provides, because including the technical scheme institute in third aspect present invention
The motor stated, therefore whole beneficial effects with above-mentioned motor, do not do state one by one herein.
The additional aspect and advantage of the present invention will become obvious in following description section, or the practice by the present invention
Recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 shows the structural representation of stator core in correlation technique；
Fig. 2 shows the structural representation of the motor stator prepared using the stator core in Fig. 1；
Fig. 3 shows the partial structural diagram at A in Fig. 2；
Fig. 4 shows the structural representation of stator core according to one embodiment of present invention；
Fig. 5 shows the structural representation of the motor stator prepared using the stator core in Fig. 4；
Fig. 6 shows the partial structural diagram at B in Fig. 5；
Fig. 7 shows that the motor stator being respectively adopted in Fig. 2 and Fig. 5 carries the efficiency pair of the motor of identical rotor
Than figure；
Fig. 8 shows the structural representation of the stator punching of stator core according to another embodiment of the invention.
Wherein, the corresponding relation in Fig. 1 to 3 between reference and component names is：
10' stator cores, 102' teeth groove, 202' conductors.
Corresponding relation in Fig. 4 to Fig. 6 and Fig. 8 between reference and component names is：
10 stator cores, 102 teeth groove, 104 stator tooths, 106 half bottom land profiles, the side of 108 stator tooths, 110 half groove tops
Profile, 112 notches, 114 first circular arcs, 116 yoke portions, 202 conductors.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Referring to the stator core of Fig. 4 to Fig. 8 descriptions according to some embodiments of the invention.
Embodiment one：
As shown in Fig. 4, Fig. 6 and Fig. 8, stator core 10 according to an embodiment of the invention, on the inwall of stator core 10
Multiple teeth groove 102 are opened up, multiple teeth groove 102 are circumferentially distributed, and respectively turn on two end faces of stator core 10, so as to appoint
Stator tooth 104 is formed between two adjacent teeth groove 102 of meaning, the cross section of teeth groove 102 is configured to axially symmetric structure, each right
Title portion includes half bottom land profile 106, the side 108 of adjacent stator tooth, half groove top profile 110 and half notch 112, half groove successively
Return pulley exterior feature 106 be arranged in parallel with half groove top profile 110, has the first angle, half groove top wheel between half bottom land profile 106 and side
There is the second angle between exterior feature 110 and side, wherein, the differential seat angle between the first angle and 90 °, and the second angle and 90 °
Between differential seat angle, respectively less than specified angle, and the width of notch 112 is D, the width of stator tooth 104 is W, 0.3 × W≤D≤
W。
In this embodiment, by into axially symmetric structure, making to be arranged in teeth groove 102 cross-sectional configuration of teeth groove 102
Winding can realize symmetrical winding, pass through and each symmetrical portion be arranged to the half bottom land wheel that includes the first angle and the second angle
Exterior feature 106, the side 108 of adjacent stator tooth, the attachment structure of half groove top profile 110, and limit between the first angle and 90 °
Differential seat angle, the differential seat angle between the second angle and 90 ° is less than specified angle, with arc transition set-up mode of the prior art
Compare, be arranged to the mode of right angle or the angle close to right angle, on the one hand, in the rectangular cross-section of conductor, can be lifted around
The coiling volume of group conductor, the utilization rate of stator core 10 is lifted, so as to make full use of the sky between adjacent two stator tooth 104
Gap, the tankful rate of winding conductor is improved, in motor operation, be advantageous to the power density and operating efficiency of lifting motor, it is another
Aspect, the additional air gap that can reduce in stator core 10 is attached, and then the back-emf of lifting motor, the performance of lifting motor, then
On the one hand, by limiting the size relationship between the width of notch 112 and the width of stator tooth 104, when use square-section conductor 202
As winding when, can realize and coiling is carried out directly on tooth, so reduce motor counter potential waveform aberration rate, lifting electricity
The operational efficiency of machine.
For example, when being rectangle in the cross section of winding conductor 202, in the line of half bottom land profile 106, the line of half groove top profile 110
When being vertically arranged respectively with the side 108 of adjacent stator tooth, the conductor of rectangle can be filled up between adjacent two stator tooth 104
Space, the inwall of winding conductor 202 and teeth groove 102 is set to be brought into close contact, so as to make full use of between adjacent two stator tooth 104
Space so that lifting motor power density and operating efficiency.
Specifically, specified angle can be set as being more than or equal to 0 °, and less than or equal to 15 °, so that half bottom land profile
106 are vertically arranged with the side 108 of stator tooth, or close to being vertically arranged, and make the side of half groove top profile 110 and stator tooth
108 are vertically arranged, or close to being vertically arranged, to realize the suitable configurations between winding conductor 202.
In addition, the stator core 10 in above-described embodiment provided by the invention can also have following additional technical feature：
As shown in figure 4, in the above embodiment, it is preferable that the circumferential profile of the cross section of stator core 10 is by a plurality of
The closed structure that joins end to end of one circular arc 114 and/or straight line is formed, and a plurality of first circular arc 114 has the identical center of circle.
Embodiment two：
As shown in Fig. 4, Fig. 6 and Fig. 8, in any of the above-described embodiment, it is preferable that half bottom land profile 106 is straight line；Half groove
Top profile 110 is straight line.
In this embodiment, by the way that half bottom land profile 106 is arranged into straight line, and half groove top profile 110 is arranged to
Straight line, by the way that with side Relative vertical or close to being vertically arranged, when using the conductor coiling of square-section, teeth groove can be lifted
102 effective usable floor area, fixing intensity of the lifting conductor in groove.
Wherein, when the line of half bottom land profile 106 and the line of half groove top profile 110 are straight line, half bottom land on symmetry axis both sides
The line of profile 106 can be conllinear, it is possible to have the angle less than 180 °, the line of half groove top profile 110 on symmetry axis both sides can be total to
Line, it is possible to have the angle less than 180 °.
Embodiment three：
In any of the above-described embodiment, it is preferable that the circular arc line of half bottom land profile 106 second；Half groove top profile 110 is the 3rd
Circular arc line, wherein, the second circular arc line, three-arc line and the first circular arc 114 have the identical center of circle.
In this embodiment, by the way that half bottom land profile 106 is arranged into the second circular arc line, and by half groove top profile 110
Three-arc line is arranged to, when being arranged to the second circular arc line and three-arc line, due to concentric with the first circular arc 114114, and
And the quantity of teeth groove 102 is more, the second circular arc line approximate can be considered as straight line with three-arc line, by with side Relative vertical
Or close to being vertically arranged, it can equally lift effective usable floor area of teeth groove 102.
Example IV：
As shown in Fig. 4 and Fig. 8, in any of the above-described embodiment, it is preferable that the Breadth Maximum of stator tooth 104 is less than or waited
Minimum widith in the yoke portion 116 of stator core 10, wherein, yoke portion 116 is between bottom land profile and corresponding circumferential profile
Distance.
In this embodiment, the yoke by the way that the minimum widith of stator tooth 104 is set greater than or equal to stator core 10
The minimum widith in portion 116, on the one hand, can ensure that stator tooth 104 has enough intensity, the coiled conductor on stator tooth 104
When, in order to make full use of space to wind more conductors, it is necessary to conductor tightly winds stator tooth 104, now, by by stator tooth
104 minimum widith sets the Breadth Maximum more than the yoke portion 116 of stator core 10, so that it is guaranteed that stator tooth 104 has enough
Intensity, be not in the situation that stator tooth 104 is broken off, on the other hand, can ensure that the maximization of cell body volume is set, to carry
Rise the setting volume of winding conductor 202.
Embodiment five：
As shown in Fig. 4 and Fig. 8, in any of the above-described embodiment, it is preferable that the width of stator tooth 104 is more than teeth groove 102
Width.
Embodiment six：
In any of the above-described embodiment, it is preferable that the cross section of teeth groove 102 is configured to rectangle.
In this embodiment, by the way that the cross-sectional configuration of teeth groove 102 is rectangular, setting for axially symmetric structure is on the one hand met
Demand is put, on the other hand, in the preparation process of stator core 10, the preparation method of rectangle is simpler, so as to make stator iron
The preparation efficiency of core 10 is higher.
Embodiment seven：
In any of the above-described embodiment, it is preferable that the cross section of teeth groove 102 is configured to isosceles trapezoid, wherein, in teeth groove
When 102 cross section is isosceles trapezoid, notch 112 is opened at the center of the short side of isosceles trapezoid.
In this embodiment, by the way that into isosceles trapezoid, on the one hand the cross-sectional configuration of teeth groove 102 is met into axially symmetric structure
Setting demand, on the other hand, in the preparation process of stator core 10, the preparation method of isosceles trapezoid is simpler, so as to
Make the preparation efficiency of stator core 10 higher.
Embodiment eight：
As shown in Fig. 4 and Fig. 8, in any of the above-described embodiment, it is preferable that multiple teeth groove 102 and multiple stator tooths 104,
It is evenly distributed, and the structure of multiple teeth groove 102 is identical, and multiple structures of stator tooth 104 are identical.
In this embodiment, by by multiple teeth groove 102 and multiple stator tooths 104, being arranged to be evenly distributed, and tooth
The structure of groove 102 is identical, and the structure of stator tooth 104 is also identical, on the one hand, preparation technology is simpler, the preparation of stator core 10
It is more efficient, on the other hand, advantageously ensure that the runnability of motor is in preferably performance state.
As shown in Fig. 4 and Fig. 8, in any of the above-described embodiment, it is preferable that the quantity of teeth groove 102 is more than or equal to 8.
In this embodiment, by the way that the quantity of teeth groove 102 is more than or equal into 8, on the one hand, meet the stator of multiple-grooved
The use demand of iron core 10, on the other hand, by the improvement to the structure of teeth groove 102, additional air gap is advantageously reduced, to lift electricity
Machine performance.
In any of the above-described embodiment, it is preferable that stator core 10 by multiple stator punchings continuously be stacked pressure solid into its
In, stator punching is silicon steel part, and the thickness of stator punching is less than 0.35mm.
In this embodiment, stator core 10 by stator punching by being formed by stacking, on the one hand, mature preparation process, prepare
Product intensity is high, advantageously ensures that the service life of stator core 10, and then reduces production cost, on the other hand, by using
Silicon steel part is the raw material of stator punching, and the iron loss of silicon steel plate is low, and pile pieces coefficient is high, and magnetic induction intensity is good and punching is good, so as to
Ensure the favorable working performance of stator core 10, another further aspect, it is 0.35mm to choose silicon steel plate thickness, is ensureing rotor and stator phase
Mutually coordinate, produce enough induced-currents with for users to use while, reduce because stator punching is blocked up, and cause larger
The probability that vortex infringement occurs, to extend the service life of motor.
Fig. 7 show motor stator shown in the motor stator and Fig. 5 being respectively adopted shown in Fig. 2 respectively with identical
Rotor coordinates the operational efficiency comparison diagram during motor operation of assembling generation.
As shown in fig. 7, by the way that the transition face between two adjacent sides in teeth groove is changed from the arc transition in Fig. 2
For right angle (or close to right angle) structural transition in Fig. 5, on the one hand, the structure operational efficiency after change is higher, on the other hand, adopts
With the motor of the structure after change, with the increase of load, the rate of disintegration of operational efficiency is also lower.
As shown in figs. 5 and 6, motor stator according to an embodiment of the invention, including：It is any such as first aspect present invention
The stator core 10 of one embodiment；Winding conductor 202, around being located in the teeth groove 102 of stator core 10.
As shown in figs. 5 and 6, in the above embodiment, it is preferable that the cross section of winding conductor 202 be configured to it is parallel
Any one in quadrangle, rectangle, round rectangle, chamfering rectangle, isosceles trapezoid.
In this embodiment, by by the cross-sectional configuration of winding conductor 202 into the figure with rectangle with larger similarity
Shape structure, on the one hand, can be carried out with the teeth groove 102 set in the embodiment of first aspect present invention it is good fit, with lifting
The winding volume of winding conductor 202, on the other hand, compared with the set-up mode of the cross section of conductor 202 of circle, be advantageous to reduce
Additional air gap, so that lifting motor performance on the whole.
Wherein, the cross section of conductor 202 is in parallelogram, rectangle, round rectangle, chamfering rectangle, isosceles trapezoid
Any one.
Embodiment nine：
As shown in figs. 5 and 6, in any of the above-described embodiment, it is preferable that the width of notch 112 is more than or equal to winding
At twice of the width of the cross section of winding conductor 202.
In this embodiment, by the conductor width that is arranged to be wrapped in by the width of stator channel opening in stator slot extremely
Few twice mode, can ensure that conductor can be with the smooth winding for being installed on the inside of teeth groove 102, and being easy to conductor, to carry
The preparation efficiency of high motor stator.
In any of the above-described embodiment, it is preferable that to concentrate volume structure, the span of winding conductor 202 is winding conductor 202
1mm。
The motor proposed according to an embodiment of the invention, including：Electricity as described in the above-mentioned any one embodiment of the present invention
Machine stator；Rotor, it is equipped with motor customization.
The motor proposed according to an embodiment of the invention, because determining including the motor described in any of the above-described embodiment of the present invention
Son, therefore whole beneficial effects with above-mentioned motor stator, do not do state one by one herein.
The compressor proposed according to an embodiment of the invention, including：Motor as described in embodiments of the invention.
The compressor proposed according to an embodiment of the invention, because including the motor described in the above embodiment of the present invention, therefore
Whole beneficial effects with above-mentioned motor, do not do state one by one herein.
In the present invention, term " first ", " second ", " the 3rd " are only used for the purpose described, and it is not intended that instruction
Or imply relative importance；Term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term " installation ",
The term such as " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected or can
Dismantling connection, or be integrally connected；" connected " can be joined directly together, and can also be indirectly connected by intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In description of the invention, it is to be understood that the instruction such as term " on ", " under ", "left", "right", "front", "rear"
Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplification is retouched
State, rather than instruction or imply signified device or unit there must be specific direction, with specific azimuth configuration and operation,
It is thus impossible to it is interpreted as limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that specific features, structure, material or the feature that the embodiment or example describe are contained in the present invention
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode combines.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (15)
1. a kind of stator core, suitable for motor, multiple teeth groove, the multiple teeth groove edge are opened up on the inwall of the stator core
It is circumferentially distributed, and respectively turn on two end faces of the stator core, so that shape between the adjacent teeth groove of any two
Into stator tooth, it is characterised in that
The cross section of the teeth groove is configured to axially symmetric structure, and each symmetrical portion includes half bottom land profile, adjacent institute successively
Side, half groove top profile and half notch of stator tooth are stated, the half bottom land profile is set with the half groove top profile parallel, described
There is the first angle between half bottom land profile and the side, there is the second folder between the half groove top profile and the side
Angle,
Wherein, the differential seat angle between the differential seat angle between first angle and 90 °, and second angle and 90 ° is small
In specified angle, and the width of rebate is D, and the width of the stator tooth is W, 0.3 × W≤D≤W.
2. stator core according to claim 1, it is characterised in that
The circumferential profile of the cross section of the stator core is joined end to end closed structure shape by a plurality of first circular arc and/or straight line
Into a plurality of first circular arc has the identical center of circle.
3. stator core according to claim 2, it is characterised in that
The half bottom land profile is straight line and/or the second circular arc line；
The half groove top profile is straight line and/or three-arc line,
Wherein, second circular arc line, the three-arc line and first circular arc have the center of circle described in identical.
4. stator core according to claim 3, it is characterised in that
The Breadth Maximum of the stator tooth is less than or equal to the yoke portion minimum widith of the stator core,
Wherein, the yoke portion is the distance between the bottom land profile and corresponding described circumferential profile.
5. stator core according to claim 1, it is characterised in that
The width of the stator tooth is less than the width of the teeth groove.
6. stator core according to any one of claim 1 to 5, it is characterised in that
The cross section of the teeth groove is configured to rectangle or isosceles trapezoid,
Wherein, when being the isosceles trapezoid in the cross section of the teeth groove, the notch is opened in the short side of the isosceles trapezoid
Center at.
7. stator core according to any one of claim 1 to 5, it is characterised in that
Multiple teeth groove and multiple stator tooths, it is uniform along the circumference, and multiple tooth slot structures are identical, and it is more
The individual stator toothing is identical.
8. stator core according to any one of claim 1 to 5, it is characterised in that：
The quantity of the teeth groove is more than or equal to 8.
9. stator core according to any one of claim 1 to 5, it is characterised in that
The stator core by multiple stator punchings continuously be stacked pressure solid into,
Wherein, the stator punching is silicon steel part, and the thickness of the stator punching is less than 0.35mm.
A kind of 10. motor stator, it is characterised in that including：
Stator core as claimed in any one of claims 1-9 wherein；
Winding conductor, around being located in the teeth groove of the stator core.
11. motor stator according to claim 10, it is characterised in that
The cross section of the winding conductor is configured in parallelogram, rectangle, round rectangle, chamfering rectangle, isosceles trapezoid
Any one.
12. stator punching according to claim 10, it is characterised in that
The width of the notch is more than or equal to twice of the width for the cross section for being wrapped in the winding conductor.
13. the motor stator according to any one of claim 10 to 12, it is characterised in that
For the winding conductor to concentrate volume structure, the span of the winding conductor is 1mm.
A kind of 14. motor, it is characterised in that including：
Motor stator as any one of claim 10 to 13；
Rotor, it is equipped with motor customization.
A kind of 15. compressor, it is characterised in that including：
Motor as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751316.8A CN107453498A (en) | 2017-08-28 | 2017-08-28 | Stator core, motor stator, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751316.8A CN107453498A (en) | 2017-08-28 | 2017-08-28 | Stator core, motor stator, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107453498A true CN107453498A (en) | 2017-12-08 |
Family
ID=60494233
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710751316.8A Pending CN107453498A (en) | 2017-08-28 | 2017-08-28 | Stator core, motor stator, motor and compressor |
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| Country | Link |
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| CN (1) | CN107453498A (en) |
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| CN110875650A (en) * | 2018-08-30 | 2020-03-10 | 艾塔尔公司 | Stator arrangement for a rotating synchronous machine |
| CN113054776A (en) * | 2019-12-27 | 2021-06-29 | 黑龙江省国特尔机电科技有限责任公司 | Uniform magnetic equidirectional high-power-density energy-saving motor |
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