CN108649719A - Motor stator, motor and rotary compressor - Google Patents
Motor stator, motor and rotary compressor Download PDFInfo
- Publication number
- CN108649719A CN108649719A CN201810730617.7A CN201810730617A CN108649719A CN 108649719 A CN108649719 A CN 108649719A CN 201810730617 A CN201810730617 A CN 201810730617A CN 108649719 A CN108649719 A CN 108649719A
- Authority
- CN
- China
- Prior art keywords
- stator
- motor
- bottom wall
- motor stator
- stator core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of motor stator, even if by shell strength hot jacket, the compression stress generated in stator core can also be greatly reduced.The motor stator (110) of the present invention has the coil (130) of stator core (120) and the teeth portion (122) wound on stator core, it is also equipped with the groove portion (123) being recessed from the yoke peripheral surface (121B) of stator core to radially inner side, suitably size, shape, the position relationship etc. of the bottom wall (123A), side wall (123B) of setting groove portion (123), effectively to reduce due to the compression stress in the stator core that hot jacket generates in cylindrical case (30).
Description
Technical field
The present invention relates to motor stator, motor and rotary compressors.
Background technology
Currently, for example using rotary compressor disclosed in Patent Document 1 as compressor.Rotary compressor
Have the compression mechanism of compression refrigerant, connect with compression mechanism by axis etc., for making the rotating element of compression mechanism rotate
Motor and hermetically store the cartridge type shell of compression mechanism and motor.In turn, rotary compressor has importing compression
The refrigerant ingress pipe of preceding refrigerant and discharge are by the refrigerant discharge leader of the compressed refrigerant of rotary compressor.
Compression mechanism and motor (are denoted as " motor etc. " below.) by hot jacket with them substantially with the made of metal of diameter
In cartridge type shell.As a result, outside the outside circumference (and outside circumference of compression mechanism) of such as stator core of motor and cartridge type
The inside circumference of shell contacts, and motor etc. is incorporated in rotary compressor.
They can be kept in order to improve quietness when the work such as motor or even if applying of impacting, electricity
Motivation etc. is strongly tightened on cartridge type shell.As a result, generating strong compression stress in motor etc..The compression stress makes
The iron loss of the stator core of motor increases.If iron loss increases, the efficiency of motor is caused to reduce.As the solution project
Technology, the technology described in patent document 2 can be enumerated.
Technology described in patent document 2 has following construction：Have body housing and motor, in body housing and electricity
Gap as defined in being arranged between the stator of motivation is equipped with stator in the vertical view of stator in the peripheral surface of tubular yoke
The solder joint more than radical of tooth.It mitigates as a result, and suppresses stress under compression from shell, thereby reduce the rigidity of shell, it is suppressed that
The noise of compressor including motor.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2003-254270 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2011-102543 bulletins
Invention content
The technical problems to be solved by the invention
But it is formed with groove portion axially along in the peripheral surface of motor stator iron core.The groove portion is used as and is pressing
The access that the refrigerant after pressure is improved in contracting mechanism works.Stator core described in patent document 2 has to be cutd open in level
Apparent time is in the groove portion of arc-shaped recess.Fig. 5 indicates coming from for the motor stator for having this groove portion in arc-shaped recess
The compression stress analog result of shell is (further, since the Fig. 5 being appended in the application is gray-scale map, therefore, also please with reference to another
Row submits the cromogram of Fig. 5 of book submission with article.).
As shown in figure 5, showing near the center of the bottom surface of arc-shaped groove portion, area near the tooth of tubular yoke inner circumferential
The contact site in domain, shell and stator core applies the case where local stress of strength respectively.This local stress not only makes fixed
The iron loss of sub- iron core increases, but also can be generated on the stator core that relatively thin electromagnetic steel plate is laminated stacking direction (with
Under, it this direction will be referred to as sometimes " axial rotary " or " axial direction ".) shape distortion.
In addition, in technology described in Patent Document 2, contact site and the solder joint position pair of above-mentioned shell and stator core
It answers.Therefore, also can butt welding point apply excessive stress, so there may be problems for the engaging intensity of solder joint and motor.
The present invention is developed in view of the above subject, it is intended that a kind of motor stator is provided, even if not
Using solder joint etc. by shell strongly hot jacket in the case of, the compression generated in stator core can also be greatly reduced and answer
Power.In addition, it is intended that providing a kind of motor and rotary compressor having the motor stator.
Technical scheme applied to solve the technical problem
The present invention provides a kind of motor stator, has：Stator core, the stator core have the yoke of tubular
Portion and inner circumferential from the yoke are towards radially inner side multiple teeth portion outstanding；Coil, the coil are wound onto the teeth portion,
The motor stator is characterized in that,
The motor stator is also equipped with the multiple groove portions for the peripheral surface for being axially formed in the yoke,
The groove portion is each provided with：Bottom wall and side wall,
The side wall is erected from the radial outside of side end edge towards the yoke of the bottom wall,
The angle occupation rate R of the groove portion is 0.50~0.70.
Here, the angle occupation rate is the value calculated by following formula (1).
Formula (1)：(A°/360°)×P×1.5
Here, A is in the horizontal cross of the stator, link the central point of one end and the stator of the bottom wall
Line segment and the connection bottom wall the other end and stator central point line segment between angle (°), P is stator
Number of poles.
In addition, it may be more desirable to, the angle occupation rate of the groove portion is 0.55~0.60.
In addition, in the motor stator of the present invention, it is generally desirable to,
The area ratio/occupancy ratio of the groove portion is 0.036~0.042.
Here, the area ratio/occupancy ratio is the value calculated by following formula (2).
Formula (2)：Area S1mm2/ area S2mm2
Here, S1 be stator arbitrary section in all groove portions the gross area (mm2), S2 is in same section with stator
Iron core outer diameter is the area of the circle of diameter.
In turn, in motor stator of the invention, it is generally desirable to,
In horizontal cross, the width of the bottom wall is wider than the width of the teeth portion.
In turn, in motor stator of the invention, it is generally desirable to,
In horizontal cross, link the minimum range of the side end edge of the bottom wall and the inner peripheral surface of the yoke
Line segment (filament) vertical line it is parallel with the width direction of the bottom wall.
In turn, in motor stator of the invention, it is generally desirable to,
In horizontal cross, the profile of the bottom wall be it is linear,
Alternatively, in horizontal cross, the profile of the bottom wall is bent to radial outside, and with outside the yoke
The roughly the same curvature of the profile of circumferential surface.
In turn, in motor stator of the invention, it is generally desirable to,
In horizontal cross, the side wall is generally perpendicularly erected from the side end edge of the bottom wall.
In addition, the present invention provides a kind of motor, have：
The motor stator；
Cartridge type shell, the cylindrical outer casing store the motor stator；
Rotor, the rotor configuration are supported to relative to the motor with fixed in the motor stator
It is sub rotatable.
In addition, the present invention provides a kind of rotary compressor, which is characterized in that have：
The motor and
Compression mechanism for compressing refrigerant,
The motor makes the rotating element of the compression mechanism rotate.
Invention effect
The motor stator of the present invention is implemented as follows in the groove portion being recessed from the periphery of stator core towards radially inner side
Design：(1) angle occupation rate：0.50~0.70 (more preferably 0.55~0.60), (2) area ratio/occupancy ratio：0.036~0.042,
(3) in horizontal cross, bottom wall width is wider than the width of teeth portion.Therefore, even if passing through shell strongly hot jacket (compression)
In the case of, the compression stress in stator core can also be greatly reduced.Stator iron caused by therefore, it is possible to reduce compression stress
The iron loss of core.In addition, because reducing compression stress, it can prevent the shape of the stacking direction of stator core generation from becoming
Shape.In addition, the motor and rotary compressor of the present invention have the motor stator, same technique effect is played.
Description of the drawings
Fig. 1 is the vertical sectional view of the rotary compressor of the present invention.
Fig. 2 is the horizontal cross of the motor of the present invention.
Fig. 3 is to indicate the figure for the compression stress analog result being applied on the motor stator of the present invention (with the application's
Article submits book to submit the figure with color table diagram 3.).
Fig. 4 is the partial enlarged view of the motor stator of the present invention.
Fig. 5 is to indicate the figure for the compression stress analog result for being applied to previous motor stator (with the object of the application
Product submit book to submit the figure with color table diagram 5.).
Specific implementation mode
＜ rotary compressors ＞
Hereinafter, an embodiment of the present invention is described in detail with reference to accompanying drawings.First, illustrate present embodiment referring to Fig.1
The overall structure of rotary compressor 1.Fig. 1 is the vertical sectional view of rotary compressor 1.
As shown in Figure 1, rotary compressor 1 has motor 10, compression mechanism 20, cartridge type shell 30.In turn, rotary compression
Machine 1 has the refrigerant ingress pipe 40 of the refrigerant before importing compression and is discharged by 1 compressed refrigerant of rotary compressor
Refrigerant discharge leader 50.In the present embodiment, refrigerant ingress pipe 40 is connect with accumulator 60.
Motor 10 and compression mechanism 20 are arranged above and below configuration in the axial direction of rotary compressor 1.At this point, motor 10 turns
The rotating element 210 eccentric roll 212 etc. of eccentric rotary (such as in cylinder 211) of son 140 and compression mechanism 20 is concatenated,
The rotary motion of motor 10 is passed to the rotating element 210 of compression mechanism 20.As a result, rotating element 210 rotates,
Carry out the compression for being directed to the refrigerant of compression mechanism 20.
Motor 10 and 20 both sides of compression mechanism are incorporated in cartridge type shell 30.As described above, motor 10 and compression
Mechanism 20 is by hot jacket in cartridge type shell 30.That is, motor 10 is received with the state contacted with cartridge type shell 30 (main part 310)
It is contained in cartridge type shell 30.
The refrigerant compressed by compression mechanism 20 pass through aftermentioned motor stator 110 and rotor 140 gap area,
It is formed in the groove portion (aftermentioned) of the peripheral surface of stator 110 and the gap area etc. of cartridge type shell 30, is arranged further towards refrigerant
Outlet pipe 50 rises.Hereby it is achieved that the refrigerant for importeding into cartridge type shell 30 from refrigerant ingress pipe 40 is compressed and from refrigerant
The mechanism that discharge pipe 50 is discharged.
Cartridge type shell 30 has the lid of the main part 310 at bottom and upper opening and the upper opening of covering main part 310
Portion 320.Cap 320 is covered in main part 310, and cartridge type shell 30 is closed.In the present embodiment, above-mentioned refrigerant discharge leader 50
Centre portion is disposed therein in a manner of penetrating through cap 320.
＜ motor ＞
Then, the motor 10 of present embodiment is explained in detail with reference to Fig. 2.Here, the level that Fig. 2 is motor 10 is cutd open
View.The motor 10 of present embodiment is concentratred winding formula motor.As shown in Fig. 2, motor 10 has stator 110, rotor
140 etc..Stator 110 be by multi-disc electromagnetic steel plate it is stacked on top of one another made of.In addition, rotor 140 is also the same, it is by multi-disc electromagnetic steel
Made of plate is stacked on top of one another.In addition, rotor 140 is rotatable state by the bearing of axis 141.But stator 110, rotor 140
Material and structure are without being limited thereto.
Stator 110 is also equipped with the coil 130 for making that magnetic flux is generated in stator core in addition to having stator core 120.Such as figure
Shown in 2, stator core 120 has the yoke 121 and teeth portion 122 of tubular, and coil 130 is wound on teeth portion 122.
Stator core 120 has multiple teeth portion 122.Multiple teeth portion 122 are all set to the inner circumferential from tubular yoke 121
Face 121A extends to radially inner side.In addition, multiple teeth portion 122 are each spaced apart by regulation along the circumferential direction of yoke inner peripheral surface 121A
Interval is arranged.
Each teeth portion 122 of present embodiment has the coil winder of as shown in Figure 2, convolute coil 130 strip
The flat front end 122B of 122A and wide cut shape with the width TW wide than coil winder 122A.Front end 122B with
The peripheral surface 142 of rotor 140 is opposite.
The coil 130 that stator 110 has is this three-phase of U, V, W phase, mutually by star-star connection, meanwhile, it is two in three-phase
120 ° of rectangular waves for being mutually powered to driving are powered.Alternatively, being that 180 ° of sine waves that three-phase is powered are powered.As shown in Fig. 2, this implementation
The stator 110 of mode have wound on 12 teeth portion 122 respectively on 12 coils 130 in total.Therefore, including the stator 110
Motor 10 number of poles P be 8.
But the number of poles P of motor 10 is without being limited thereto.By increasing the quantity of teeth portion 122 and keeping coil number more than number of poles,
Can have the 10 extremely above poles.In contrast, by reducing the quantity of teeth portion 122 and keeping coil number fewer than number of poles, can have
Standby 6 poles extremely below.
It is equipped with the multiple groove portions 123 formed axially along in the peripheral surface 121B of yoke 121.Groove portion 123 distinguishes shape
It is recessed as to the radially inner side of yoke 121.In addition, as shown in Fig. 2, the groove portion 123 of present embodiment is respectively configured as pressing from both sides
It is opposite with teeth portion 122 yoke 121.In turn, each groove portion 123 is formed from the upper surface side of yoke 121 to bottom surface side.
Groove portion 123 is set in this way, when motor 10 is incorporated in cartridge type shell 30, in yoke 121 and cartridge type
Perforation road is formed between shell 30.As described above, passing through the groove portion as perforation road by 20 compressed refrigerant of compression mechanism
123 and towards refrigerant discharge leader 50 rise.
Groove portion 123 is each provided with two bottom wall 123A and side end edge 1231 from bottom wall 123A towards above-mentioned yoke 121
Radial outside erect side wall 123B.The junction of bottom wall 123A and side wall 123B can be the shape for having corner angle, appropriate
R shapes, can also be the shape with fillet.
Here, in horizontal cross (i.e. Fig. 2), one end of connection bottom wall 123A is being set (that is, bottom wall 123A and side wall
The junction of 123B1) and stator 110 central point O line segment and connection bottom wall 123A the other end (i.e. bottom wall 123A and side
The junction of wall 123B2) and stator 110 central point O line segment between angle be A °, the pole that is formed on the stator 110
When number is P (number of poles is 8 in present embodiment), it is defined by the formula the angle occupation rate R of groove portion 123.
R=(A °/360 °) × P × 1.5 (1)
When above-mentioned angle occupation rate R is 0.50~0.70, the pressure from cartridge type shell 30 of generation in stator core 120
Stress under compression is greatly lowered.Details are aftermentioned, but when the angle occupation rate R of groove portion 123 is less than 0.50, not only in groove portion bottom wall 123A,
And the region between the adjacent teeth portion 122 of yoke inner peripheral surface 121A, it also can widely generate strong compression stress.
In addition, when the angle occupation rate R of groove portion 123 is more than 0.70, the contact of yoke peripheral surface 121B and cartridge type shell 30
Area is reduced, and will produce the chimeric state for being easy to be released from of cartridge type shell 30 and stator core 120.In addition, angle occupation rate R is super
When 0.70, strong compression stress is generated in yoke peripheral surface 121B and the contact site 124 of cartridge type shell 30.As a result,
The danger of the contact site 124 damage is high, and will produce cartridge type shell 30 cannot stably keep the state of affairs of stator core 120.
When in contrast, in the range of the angle occupation rate R of groove portion 123 is 0.50~0.70, compared with the above case, apply
Being added on the compression stress of groove portion bottom wall 123A significantly reduces.In addition, will not be generated at other positions of stator core 120 strong
Compression stress.Therefore, because angle occupation rate R is in the numberical range, so as to which the pressure in stator core 120 is greatly reduced
Stress under compression, as a result, can prevent the increase of the iron loss of stator core 120 and the efficiency of movement of motor 10 from reducing.Separately
Outside, in such manner, it is possible to reduce the compression stress being applied in stator core 120, so the stacking side of stator core 120 can be prevented
To shape distortion.
In turn, when above-mentioned angle occupation rate R is 0.55~0.60, the condition (R with above-mentioned numberical range：0.50~0.70) phase
Than the compression stress from cartridge type shell 30 generated in stator core 120 is further greatly reduced.
In turn, in horizontal cross (i.e. Fig. 2), total face of all groove portions 123 in the arbitrary section of setting 110
Product (mm2) be S1, the stator 110 in same section therewith area (mm2) be S2 when, groove portion 123 is defined by following formula (2)
Area ratio/occupancy ratio S.
S=S1/S2 (2)
At this point, S2 is with the outer diameter of stator 110 (across the distance of the point-to-point transmission of the yoke peripheral surface 121B of central point O)For the circle of diameter area (for example, the outer diameter of stator 110For 150mm when, S2 17,663mm2.Wherein, pi is set
It is calculated for 3.14.).
In the case that above-mentioned area ratio/occupancy ratio S is 0.036~0.042, it is able to maintain that cartridge type shell 30 to stator core 120
The generative capacity for stablizing the magnetic field that keeps and can assign 140 sufficient rotational energy of rotor, and application can be greatly reduced
Compression stress in stator core 120.
In turn, more preferably above-mentioned area ratio/occupancy ratio S is 0.039~0.041.Since area ratio/occupancy ratio S is in the numberical range
It is interior, so as to more effectively play the compression stress reducing effect in stator core 120.
In addition, compared with the width TW of teeth portion coil winder 122A, the width of the groove portion bottom wall 123A in horizontal cross
It is longer to spend BW (distance of a side 123B1 to another party 123B2 for groove portion side wall), can more be greatly reduced especially at groove portion bottom
The compression stress that wall 123A is nearby generated.But when the width BW of bottom wall 123A is long, stator core peripheral surface 121B and cylinder
The contact area of type shell 30 is reduced, and stator core 120 is easy to fall off from cartridge type shell 30.
In turn, as shown in Fig. 2, being preferably contoured as groove portion bottom wall 123A in horizontal cross is linear or to have
The shape that the mode of the curvature roughly the same with the profile of yoke peripheral surface 121B is bent to radial outside.
By designing the contour shape of bottom wall 123A as described above, the generation of stator core 120 can be greatly reduced
Compression stress, particularly the compression stress generated near bottom wall 123A.In turn, for the profile of bottom wall 123A, to have
The case where mode of the curvature roughly the same with the profile of yoke peripheral surface 121B is bent to radial outside, is straight with the profile
Linear situation is compared, and the compression stress generated near bottom wall 123A can be further decreased.
Additionally, it is preferred that the both sides (123B1,123B2) of groove portion side wall 123B are from the side end edge 1231 of bottom wall 123A towards yoke
The radial outside in iron portion 121 is vertically raised.By using the construction that side wall 123B is erected from bottom wall 123A, can easily be done
The formation operation of groove portion 123 on stator core 120, and the compression stress generated in stator core 120 can be reduced.That is, i.e.
Make not use complicated shape, also can effectively reduce the compression stress generated in stator core 120.
In addition, among the above, to (stator core 120) hot jacket of stator 110 in the mode of the main part 310 of cartridge type shell 30
It is illustrated.But the chimeric method of stator 110 (stator core 120) and cartridge type shell 30 is without being limited thereto, as long as relative to
Cartridge type shell 30 suitably keeps stator 110.In addition, as motor 10, it is assumed that for motor but it is also possible to be generator.
The type of motor is also not particularly limited.
[embodiment 1]
About motor described above (motor) stator, specific embodiment is described below.But the present invention not by
Following embodiments limits and limitation.
First, the details of the Examples and Comparative Examples of the motor stator of the present invention are illustrated with reference to Fig. 3 and Fig. 4.Here,
Fig. 3 is indicated in each Examples and Comparative Examples, is generated in stator core 120 of the hot jacket in the main part 310 of cartridge type shell 30
Compression stress analog result.Here, the region that display color is redder, more applies strong stress, the more blue area of display color
Domain, stress are weaker.About the color between red and blue, compression stress is weakened successively by orange, yellow, green, nattier blue sequence
(in addition, the Fig. 3 being appended in the application is gray-scale map, therefore, also please with reference to the Fig. 3's for separately submitting book submission with article
Cromogram.In Fig. 3 (gray-scale map), (compression stress is strong for blue display area (the weak region of compression stress) and red display region
Region) both sides show with the state that do not distinguish.Here, the whole region of teeth portion 122 is shown by blue.In addition, cylinder
The whole region of type shell 30 is by red display.There is the depth in yoke 121, the deeper region of display indicates compression stress
It is stronger.).
In addition, Fig. 4 indicates the partial enlarged view of the stator core 120 of each Examples and Comparative Examples.More specifically, Fig. 4
It is minimum range in the horizontal cross-section for indicate stator core 120, indicating groove portion bottom wall 123A and yoke inner peripheral surface 121A
Filament and filament vertical line figure.Here, in same section, above-mentioned filament is connection bottom wall side end edge 1231 and above-mentioned yoke
The line segment of the minimum range of iron portion inner peripheral surface 121A.
In addition, related each Examples and Comparative Examples, angle occupation rate R, each groove portion 123 size (unit：Mm), stator iron
The gross area (the unit of all groove portions 123 formed on core 120：mm2), value such as the following table 1 of area ratio/occupancy ratio S.Here, all
The stator core 120 used in embodiment, comparative example has the section circle shape of outer diameter 150mm.In addition, number of poles is 8.
[table 1]
As shown in figure 3, (more precisely, 0.55~0.60 model in the range of angle occupation rate R is included in 0.50~0.70
In enclosing) embodiment 1 and embodiment 2 in, the compression stress of application is greatly reduced than comparative example.Especially in groove portion bottom wall 123A
The reduction of the compression stress nearby generated significantly embodies.Consequently found that in stator core 120, by the way that angle is occupied
The condition of rate R is set in above-mentioned numberical range, can be greatly reduced and be generated in stator core of the hot jacket in cartridge type shell 30
Compression stress.
In addition, in comparative example 5, compared with embodiment 1 and embodiment 2, in the compression stress that groove portion bottom wall 123A is generated
It is few.But the contact site 124 of yoke 121 and cartridge type shell 30, yoke inner peripheral surface 121A teeth portion 122 near
Multiple positions such as position locally generate strong compression stress.If generating this local compression stress in contact site 124,
The engaging with cartridge type shell 30 can be formed and be easy the state being released from.In addition, the compression stress of part easily causes stator core
The shape (deformation) of 120 stacking direction deforms.In contrast, it in embodiment 1, embodiment 2, not will produce this local
Compression stress.
Here, when with reference to embodiment 1 shown in Fig. 4 and embodiment 2, it is known that in horizontal profile, in connection groove portion bottom wall
The width of the vertical line and bottom wall 123A of the side end edge 1231 of 123A and the line segment (filament) of the minimum range of yoke inner peripheral surface 121A
In the case that degree direction is substantially parallel, compression stress reduces.In contrast, above-mentioned vertical line and bottom wall 123A width direction not
In the case of parallel, it is applied with stronger compression stress.It is, therefore, intended that：It is in above-mentioned numberical range in angle occupation rate R
In the case of, and then in the case where filament meets above-mentioned condition, the compression generated in stator core 120 can be greatly reduced and answer
Power.
In addition, with reference to Fig. 3, when being compared to embodiment 1 and embodiment 2, the groove portion bottom wall 123A of embodiment 1 has been obtained
Neighbouring compression stress is than the analog result that the compression stress of embodiment 2 reduces.Embodiment 1 has and stator core peripheral surface
The groove portion bottom wall 123A that 121B is accordingly bent.In contrast, embodiment 2 has linear bottom wall 123A.Therefore, this is meaned
It：Groove portion 123 in the range of occupation rate R is in 0.50~0.70 at angle (more precisely, in the range of 0.55~0.60),
In the case where the shape of bottom wall 123A and stator core peripheral surface 121B are accordingly bent, the shape with bottom wall 123A is straight line
The case where shape, is compared, and compression stress reducing effect can be more played.
One embodiment of the present invention is illustrated above, but above explanation is for easy understanding of the invention
Illustrate, rather than limits the present invention's.Certainly, the present invention can be changed in range without departing from the spirit, be improved, and
And the present invention includes its equivalent.
Symbol description
1 rotary compressor
10 motor
110 stators
120 stator cores
121 yokes
122 teeth portion
123 groove portions
The bottom wall of 123A groove portions
The side wall of 123B groove portions
130 coils
140 rotors
20 compression mechanisms
210 rotating elements
30 cartridge type shells
The main part of 310 cartridge type shells
The cap of 320 cartridge type shells
40 refrigerant ingress pipes
50 refrigerant discharge leaders
60 accumulators
Claims (10)
1. a kind of motor stator, has：Stator core, the stator core have the yoke of tubular and from the yokes
The inner circumferential in portion is towards radially inner side multiple teeth portion outstanding；Coil, the coil are wound onto the teeth portion, wherein
The motor stator is also equipped with the multiple groove portions for the peripheral surface for being axially formed in the yoke,
Each free bottom wall of the groove portion and side wall are constituted,
The side wall is erected from the radial outside of side end edge towards the yoke of the bottom wall,
The angle occupation rate R of groove portion defined by following formula (1), described is 0.50~0.70,
R=(A °/360 °) × P × 1.5 (1)
In the formula (1),
A refers to：In the horizontal cross of the stator, link the line of one end of the bottom wall and the central point of the stator
Angle (°) between the line segment of the central point of the other end and the stator of section and the connection bottom wall,
P refers to：The number of poles formed in the stator.
2. motor stator according to claim 1, wherein
The angle occupation rate R of the groove portion is 0.55~0.60.
3. motor stator according to claim 1 or 2, wherein
The area ratio/occupancy ratio S of groove portion defined by following formula (2), described is 0.036~0.042,
S=S1/S2 (2)
In the formula (2),
S1 refers to：The gross area (the mm of all groove portions in the section of the stator2)
S2 refers to：Using the stator core outer diameter as the area (mm of the circle of diameter in section identical with the situation in S12)。
4. motor stator described in any one of claim 1 to 3, wherein
In horizontal cross, the width of the bottom wall is wider than the width of the teeth portion.
5. motor stator according to any one of claims 1 to 4, wherein
In horizontal cross, link the line of the minimum range of the side end edge of the bottom wall and the inner peripheral surface of the yoke
The vertical line of section is parallel with the width direction of the bottom wall.
6. motor stator according to any one of claims 1 to 5, wherein
In horizontal cross, the profile of the bottom wall is linear.
7. motor stator according to any one of claims 1 to 5, wherein
In horizontal cross, the profile of the bottom wall is bent to radial outside, and with the wheel with the yoke peripheral surface
Wide roughly the same curvature.
8. motor stator according to any one of claims 1 to 7, wherein
In horizontal cross, the side wall is generally perpendicularly erected from the side end edge of the bottom wall.
9. a kind of motor, has：
Motor stator according to any one of claims 1 to 8；
Cartridge type shell, the cartridge type shell store the motor stator；
Rotor, the rotor configuration is in the motor stator, and being supported to can relative to the motor stator
Rotation.
10. a kind of rotary compressor, has：
Motor described in claim 9 and
Compression mechanism for compressing refrigerant,
The motor makes the rotating element of the compression mechanism rotate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-246412 | 2017-12-22 | ||
| JP2017246412A JP2019115157A (en) | 2017-12-22 | 2017-12-22 | Stator for motor, motor, and rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108649719A true CN108649719A (en) | 2018-10-12 |
Family
ID=63751142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810730617.7A Pending CN108649719A (en) | 2017-12-22 | 2018-07-05 | Motor stator, motor and rotary compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019115157A (en) |
| CN (1) | CN108649719A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293796A (en) * | 2018-12-06 | 2020-06-16 | 操纵技术Ip控股公司 | Permanent magnet motor |
| JP2020191715A (en) * | 2019-05-21 | 2020-11-26 | 株式会社デンソー | Stator assembly and motor |
| US20210281139A1 (en) * | 2018-08-30 | 2021-09-09 | Lg Innotek Co., Ltd. | Motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691038B (en) * | 2021-09-15 | 2023-06-06 | 首钢智新迁安电磁材料有限公司 | Motor stator in permanent magnet synchronous motor and design method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008193778A (en) * | 2007-02-02 | 2008-08-21 | Mitsubishi Electric Corp | Stator and enclosed compressor and rotating machine |
| CN104753195A (en) * | 2013-12-31 | 2015-07-01 | 三菱电机(广州)压缩机有限公司 | Motor stator, motor and enclosed type compressor |
| CN204794393U (en) * | 2015-06-23 | 2015-11-18 | 广东美芝制冷设备有限公司 | Stator lamination and compressor that has it |
| CN106936229A (en) * | 2015-12-29 | 2017-07-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, motor and its stator mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004242489A (en) * | 2002-12-11 | 2004-08-26 | Daido Steel Co Ltd | Brushless motor |
| KR102491657B1 (en) * | 2015-10-08 | 2023-01-26 | 삼성전자주식회사 | Electric motor and compressor having the same |
| JP6853643B2 (en) * | 2016-09-30 | 2021-03-31 | 愛知電機株式会社 | Electric motor and compressor |
-
2017
- 2017-12-22 JP JP2017246412A patent/JP2019115157A/en active Pending
-
2018
- 2018-07-05 CN CN201810730617.7A patent/CN108649719A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008193778A (en) * | 2007-02-02 | 2008-08-21 | Mitsubishi Electric Corp | Stator and enclosed compressor and rotating machine |
| CN104753195A (en) * | 2013-12-31 | 2015-07-01 | 三菱电机(广州)压缩机有限公司 | Motor stator, motor and enclosed type compressor |
| CN204794393U (en) * | 2015-06-23 | 2015-11-18 | 广东美芝制冷设备有限公司 | Stator lamination and compressor that has it |
| CN106936229A (en) * | 2015-12-29 | 2017-07-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, motor and its stator mechanism |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210281139A1 (en) * | 2018-08-30 | 2021-09-09 | Lg Innotek Co., Ltd. | Motor |
| US11942849B2 (en) * | 2018-08-30 | 2024-03-26 | Lg Innotek Co., Ltd. | Motor |
| CN111293796A (en) * | 2018-12-06 | 2020-06-16 | 操纵技术Ip控股公司 | Permanent magnet motor |
| CN111293796B (en) * | 2018-12-06 | 2022-11-25 | 操纵技术Ip控股公司 | Permanent magnet motor |
| US11955842B2 (en) | 2018-12-06 | 2024-04-09 | Steering Solutions Ip Holding Corporation | Permanent magnet machine |
| JP2020191715A (en) * | 2019-05-21 | 2020-11-26 | 株式会社デンソー | Stator assembly and motor |
| JP7226088B2 (en) | 2019-05-21 | 2023-02-21 | 株式会社デンソー | stator assembly and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019115157A (en) | 2019-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108649719A (en) | Motor stator, motor and rotary compressor | |
| CN202906595U (en) | Motor | |
| JP6080967B2 (en) | Permanent magnet embedded electric motor, compressor and refrigeration air conditioner | |
| US20090251023A1 (en) | Permanent magnet rotating electric machine and electric power steering device using the same | |
| US20120258002A1 (en) | Electric machine | |
| CN208190359U (en) | Stator core and rotating electric machine | |
| JP5325785B2 (en) | Stator for rotating electrical machine | |
| CN107453571A (en) | Switched reluctance machines | |
| WO2018096887A1 (en) | Permanent magnet type rotary electric machine and compressor using same | |
| CN105794086A (en) | Permanent magnet-embedded electrical motor, compressor, and refrigerating air conditioning device | |
| JP2005117771A (en) | Permanent magnet type synchronous motor and compressor using it | |
| CN212935603U (en) | Motor and compressor with same | |
| JP2012175741A (en) | Concentrated winding coil | |
| KR100540096B1 (en) | Electromotive compressor | |
| JP6470598B2 (en) | Permanent magnet type rotating electric machine and compressor using the same | |
| CN107257172B (en) | Rotor and motor and compressor with the rotor | |
| JP2011102543A (en) | Compressor | |
| JP7022269B2 (en) | Motors and fluid machines equipped with them | |
| CN107852048B (en) | Permanent magnet type electric rotating motivation and the compressor for using it | |
| JP6223568B2 (en) | Permanent magnet embedded electric motor, compressor and refrigeration air conditioner | |
| CN207518367U (en) | Compressor stator and compressor | |
| US20190044400A1 (en) | Rotor, interior permanent magnet motor, and compressor | |
| JP2018102039A (en) | Rotor of electric motor, and compressor | |
| CN102810972A (en) | Motor | |
| JP2005045944A (en) | Bobbin and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |
|
| RJ01 | Rejection of invention patent application after publication |