CN108880037A - Rotor and its assembly method, motor - Google Patents
Rotor and its assembly method, motor Download PDFInfo
- Publication number
- CN108880037A CN108880037A CN201810805327.4A CN201810805327A CN108880037A CN 108880037 A CN108880037 A CN 108880037A CN 201810805327 A CN201810805327 A CN 201810805327A CN 108880037 A CN108880037 A CN 108880037A
- Authority
- CN
- China
- Prior art keywords
- rotor
- magnetic
- end ring
- item
- motor
- 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.)
- Granted
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of rotor and its assembly method, motor.A kind of rotor, for in permanent magnet synchronous motor, including rotor core, the both ends of the rotor core are respectively equipped with the first end ring, the second end ring, more are connected between first end ring and second end ring every magnetic conductance item, every in the groove that magnetic conductance item navigates within that the rotor core has described in more, the rotor core has multiple magnetic slots, region of the groove between the opposite magnetic slot of two adjacent pole polarities.A kind of rotor according to the present invention and its assembly method, motor, connect using every magnetic conductance item with end ring, improve the connection reliability and structural integrity of rotor, while polarity opposite magnetic pole that can be adjacent to rotor is carried out every magnetic.
Description
Technical field
The invention belongs to technical field of motor manufacture, and in particular to a kind of rotor and its assembly method, motor.
Background technique
Currently, high-speed permanent magnetic synchronous motor is quickly grown, and under the operating conditions such as centrifuge for being widely used in heating and ventilating equipment, due to
Motor speed height (generally having 10000rpm or more), the rotary inertia of rotor is big, therefore rotor structure is generally used punching
Outer diameter is small, folds thick big slender type rotor core (embedded magnet steel 5 '), Fig. 1 gives the side view of current rotor, Fig. 2
The cross-sectional view of the rotor of Fig. 1 structure is given, which shows current speed permanent magnet synchronous motor rotor punching 6 '
Usual structure, four small sircle holes 1 ' therein can be used for cooling channel, eight elongated slots 2 ' for installing magnet steel 5 ' (embedded),
Every two elongated slot 2 ' is 1 pole, and totally 4 poles (N, S in such as Fig. 2), can also be designed as 1 pole of a slot or three slots 1 according to actual needs
Pole.In order to as far as possible separate the magnetic pole (pole N, the pole S), to reduce short-circuit leakage field, in the corresponding position (wedge of elongated slot 2 '
Slot) it is provided with slot wedge 3 ', slot wedge 3 ' is made of non-metal insulating material, is filled to the gap between magnet steel and rotor,
On the one hand it can play the role of separation magnetic pole above-mentioned, to the machine of rotor when another aspect can also reduce motor high speed rotation
The both ends of tool damage, rotor core compress rotor core using the end ring 4 ' of non-magnetic material production, full to control stacking factor
Sufficient technical drawing requirement, and magnet steel moving along rotor axial can be prevented.
And since existing slot wedge 3 ' mostly uses non-metal insulating material, end ring 4 ' is then metallic non-magnetic material, therefore
It is that cannot connect to together in the two structure, rotor stable connection reliability is not high, and structural integrity is poor；In addition, when motor is negative
When load is uneven or unsymmetrical short-circuit occurs in motor, rotor will appear axial streaming current in short-term, this power frequency is 2 times inverse
The induced current of time-dependent current frequency, induced current will make rotor heating, it is most likely that the irreversible demagnetization of magnet steel is caused, namely
Existing slot wedge structure cannot be played under the abnormal conditions that motor operation occurs and be played a protective role to rotor.
Summary of the invention
Therefore, it the technical problem to be solved in the present invention is that providing a kind of rotor and its assembly method, motor, uses
It is connect every magnetic conductance item with end ring, improves the connection reliability and structural integrity of rotor, while can be to rotor phase
Adjacent polarity opposite magnetic pole is carried out every magnetic.
To solve the above-mentioned problems, the present invention provides a kind of rotor, is used in permanent magnet synchronous motor, including rotor iron
Core, the both ends of the rotor core are respectively equipped with the first end ring, the second end ring, between first end ring and second end ring
More are connected with every magnetic conductance item, every in the groove that magnetic conductance item navigates within that the rotor core has described in more, the rotor iron
Core has multiple magnetic slots, region of the groove between the opposite magnetic slot of two adjacent pole polarities.
Preferably, the groove is semi-closed slot, described to navigate in the semi-closed slot every the matching of magnetic conductance item.
Preferably, the material every magnetic conductance item be metal non-magnet material, the material of first end ring and it is described every
The material of magnetic conductance item is identical, and/or, the material of second end ring is identical as the material every magnetic conductance item.
Preferably, the metal non-magnet material is one of aluminium or copper.
Preferably, the multiple to form cage-shaped structure every magnetic conductance item and first end ring, second end ring, when the metal
When non-magnet material is aluminium, the cage-shaped structure uses casting and forming.
Preferably, when the metal non-magnet material be copper when, the both ends every magnetic conductance item respectively with the first end
Ring, the second end ring welding.
Preferably, the number of poles of the rotor is one of 2 poles, 4 poles, 6 poles, 8 poles.
Preferably, the quantity every magnetic conductance item is identical as the rotor number of poles.
The present invention also provides a kind of assembly methods of above-mentioned rotor, include the following steps：
It is ground the shaft mounting hole of rotor core；
Insert shaft.
The present invention also provides a kind of motors, including above-mentioned rotor.
A kind of rotor provided by the invention and its assembly method, motor, by the opposite polarity magnetic of adjacent pole
The groove is arranged in region between steel tank, and wear in the groove it is described every magnetic conductance item, without using existing skill
Wedge slot structure in art, on the one hand, the magnetic between the magnet steel or magnet steel group that magnetic conductance item can be effectively isolated adjacent pole
On the other hand road can substantially eliminate the leakage field along rotor surface and reduce the rotor surface generated in motor normal course of operation
Vortex；In another aspect, will connect to form cage-shaped structure, energy with first end ring, the second end ring every the both ends of magnetic conductance item
Enough obviously prevent the magnet steel in magnetic slot in the play of rotor axial, simultaneously because using monoblock type cage-shaped structure, energy
The connection reliability, structural integrity and structural strength for enough significantly improving the rotor improve the magnet steel in the magnetic
Positional stability in steel tank, effectively prevent mechanical damage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rotor in the prior art；
Fig. 2 is the partial cutaway schematic of A-A in Fig. 1；
Fig. 3 is the structural schematic diagram of the cage-shaped structure in the rotor of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the rotor core in the rotor of the embodiment of the present invention.
Appended drawing reference is expressed as：
1, punching；2, rotor core；21, groove；22, shaft mounting hole；23, magnetic slot；3, cage-shaped structure；31, first
End ring；32, the second end ring；33, every magnetic conductance item；1 ', small sircle hole；2 ', elongated slot；3 ', slot wedge；4 ', end ring；5 ', magnet steel；6 ', turn
Sub- punching.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to 4, according to an embodiment of the invention, providing a kind of rotor, it to be used for permanent magnet synchronous electric
In machine, including rotor core 2, the both ends of the rotor core 2 are respectively equipped with the first end ring 31, the second end ring 32, and described first
It is connected with more between end ring 31 and second end ring 32 every magnetic conductance item 33, navigates within described turn every magnetic conductance item 33 described in more
In the groove 21 that sub- iron core 2 has, the rotor core 2 has multiple magnetic slots 23, and the groove 21 is in adjacent two
Region between the opposite magnetic slot 23 of pole polarity.By in the opposite polarity magnetic slot 23 of adjacent pole in the technical solution
Between region the groove 21 is set, and wear in the groove 21 it is described every magnetic conductance item 33, without using existing
Wedge slot structure in technology, on the one hand, described between the magnet steel or magnet steel group that magnetic conductance item 33 can be effectively isolated adjacent two pole
Magnetic circuit, on the other hand can substantially eliminate the leakage field along rotor surface and reduce the rotor generated in motor normal course of operation
Surface eddy；In another aspect, will connect to form mouse with first end ring 31, the second end ring 32 every the both ends of magnetic conductance item 33
Basket structure 3 can obviously prevent the magnet steel in magnetic slot 23 in the play of rotor axial, simultaneously because using monoblock type
Cage-shaped structure 3 can significantly improve the connection reliability of the rotor, improve the magnet steel in the magnetic slot 23
Positional stability effectively prevent mechanical damage.
Preferably, the groove 21 is semi-closed slot, described to navigate in the semi-closed slot every the matching of magnetic conductance item 33, half
Closed slot can further eliminate the leakage field along rotor surface, be further reduced the rotor table generated in motor normal course of operation
Face vortex.
It is excellent in first end ring 31, the second end ring 32 and convenience every magnetic conductance item 33 in terms of Joining Technology
Selection of land, the material every magnetic conductance item 33 are metal non-magnet material, the material of first end ring 31 and described every magnetic conductance item
33 material is identical, and/or, the material of second end ring 32 is identical as the material every magnetic conductance item 33, the identical company of material
Fitting can be carried out when connection using modes such as welding, naturally it is also possible to other modes, such as bolt, riveting are used,
Using removablies such as bolts in the identical situation of material, it can effectively ensure that there may be relative movements between connector
Mutual abrasion aggravation phenomenon is generated.Using the technical solution, make the motor abnormal issuable axial direction when operating
Electric current can be shorted and cancel out each other in the cage-shaped structure 3, can reduce short-circuit leakage field, eliminate edge when motor operates normally
The vortex of rotor surface, further says, when motor operates normally, the support of the cage-shaped structure 3 and connective stability
Effect is more prominent, and structural strength is more preferably and when motor operation exception, such as motor load is uneven or asymmetry occurs in motor
When short-circuit, rotor will appear axial current in short-term, which is often the induced current of 2 times of inverter current frequencies, and this
Induced current will will lead to rotor (iron core) and sharply generate heat, and the rotor sharply to generate heat is very likely to cause the irreversible of the magnet steel
Demagnetization, and after using the cage-shaped structure 3 of the technical solution, then the induced current of 2 overtones band above-mentioned can be guided mainly from institute
It states and is flowed through every in magnetic conductance item 33, and form closed loop with first end ring 31, the second end ring 32, and cancel out each other, in this way
The rotor calorific value of high-speed permanent magnetic synchronous motor can be prevented excessive, or even avoid the generation of motor burnout phenomenon.The electricity
Machine rotor is particularly suitable in the case of the rotor core that rotor includes leptosomatic high-speed permanent magnetic synchronous motor.The metal is non-
Magnetic material can be for example one of aluminium, aluminium alloy, copper alloy, stainless steel material or copper etc..
Further, when the metal non-magnet material is aluminium, the cage-shaped structure 3 uses casting and forming；When described
When metal non-magnet material is copper, the both ends every magnetic conductance item 33 are welded with first end ring 31, the second end ring 32 respectively,
Different moulding process or Joining Technology are selected according to the difference of the metallic non-magnetic material, are more in line with the difference in material
Characteristic.Certainly, can be different due to moulding process or Joining Technology in terms of specific assembly, lead to that the magnet steel is installed
It is sequentially different.For example, when using cast shaping process above-mentioned, the rotor core again is needed after casting and forming
In magnet steel magnetize, to prevent the magnet steel described in casting process occur high temperature demagnetize phenomenon；When using welded connection technology, magnetic
Steel magnetizes, can be before the cage-shaped structure 3 forms or after molding.
In order to guarantee that cage-shaped structure 3 plays above-mentioned technical effect in the rotor in the rotor, and
It can be distinguished with traditional permanent magnet synchronous motor using cage rotor asynchronous starting, it is preferable that the rotor
Number of poles is one of 2 poles, 4 poles, 6 poles, 8 poles.In order to make problem definitely, it is emphasized that, above-mentioned cage-shaped structure 3
Similar to the rotor core for the line-start permanent magnetic synchronous motor for using mouse cage winding in the prior art, but not fully,
It acts on also entirely different.The permanent magnet synchronous motor of asynchronous starting, in order to realize that its asynchronous starting acts on, conducting bar slot is generally used and is opened
Mouth slot and the surface for being distributed in rotor, quantity is also relatively more, and every 33 boundary of magnetic conductance item in adjacent two described in the technical program
Between pole, and in groove 21, quantity is identical as rotor number of poles, and is primarily adapted for use in the height of radial embedded magnetic steel structure
The rotor core of fast permanent magnet synchronous motor under normal condition, plays enhancing structure intensity and separated magnetic effect, under abnormality,
The function that rotor calorific value can also be prevented excessive, as mentioned above due to the general rotor of high-speed permanent magnetic synchronous motor uses 2
Pole, 4 poles or 6 ultimate ratios are more, therefore the quantity every magnetic conductance item 33 is also fewer, and asynchronous starting effect can be ignored not
Meter.
It can be seen from the above, in terms of the assembling of the rotor, due to using the mouse of monoblock type in the technical solution
Basket structure 3, to keep the rotor core 2 and the assembling of its shaft more flexible, for example, can be first by the cage-shaped structure 3
It is assembled into an entirety (such as by above-mentioned casting or welding) with the rotor core 2, shaft is then being inserted into institute
Before stating in the shaft mounting hole 22 of rotor core 2, grinding processing first can be carried out to the shaft mounting hole 22, this is advantageous
Installation between shaft and rotor core, more reasonable than current rotor assembly assembly technology, reliability is higher, therefore this hair
It is bright that a kind of assembly method of above-mentioned rotor is also provided, include the following steps：
It is ground the shaft mounting hole 22 of rotor core 2；
Insert shaft.
Other the step of, are more usual, and details are not described herein again.
The present invention also provides a kind of motors, including above-mentioned rotor, connect using every magnetic conductance item with end ring, improve motor
The connection reliability of rotor is protected rotor, is dropped when unsymmetrical short-circuit occur in motor load imbalance or motor
The calorific value of low rotor, irreversible demagnetization phenomenon occurs for the magnet steel prevented in rotor, meanwhile, it is capable to rotor
Adjacent polarity opposite magnetic pole is carried out every magnetic.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (10)
1. a kind of rotor, in permanent magnet synchronous motor, which is characterized in that including rotor core (2), the rotor core
(2) both ends are respectively equipped with the first end ring (31), the second end ring (32), first end ring (31) and second end ring (32)
Between be connected with more every magnetic conductance item (33), described in more every magnetic conductance item (33) navigate within the rotor core (2) have it is recessed
In slot (21), the rotor core (2) has multiple magnetic slots (23), and the groove (21) is in two adjacent pole polarities
Region between opposite magnetic slot (23).
2. rotor according to claim 1, which is characterized in that the groove (21) is semi-closed slot, described every magnetic
Conducting bar (33) matching navigates in the semi-closed slot.
3. rotor according to claim 1, which is characterized in that the material every magnetic conductance item (33), which is that metal is non-, leads
Magnetic material, the material of first end ring (31) is identical as the material every magnetic conductance item (33), and/or, second end ring
(32) material is identical as the material every magnetic conductance item (33).
4. rotor according to claim 3, which is characterized in that the metal non-magnet material is one in aluminium or copper
Kind.
5. rotor according to claim 4, which is characterized in that the multiple every magnetic conductance item (33) and the first end
Ring (31), the second end ring (32) form cage-shaped structure (3), when the metallic non-magnetic material is aluminium, the cage-shaped structure (3)
Using casting and forming.
6. rotor according to claim 4, which is characterized in that described when the metallic non-magnetic material is copper
It is welded respectively with first end ring (31), the second end ring (32) every the both ends of magnetic conductance item (33).
7. rotor according to any one of claim 1 to 6, which is characterized in that the number of poles of the rotor is 2
One of pole, 4 poles, 6 poles, 8 poles.
8. rotor according to claim 1, which is characterized in that the quantity every magnetic conductance item (33) and the motor
Rotor number of poles is identical.
9. a kind of assembly method of such as rotor described in any item of the claim 1 to 8, which is characterized in that including as follows
Step：
It is ground the shaft mounting hole (22) of rotor core (2)；
Insert shaft.
10. a kind of motor, including rotor, which is characterized in that the rotor is any one of claims 1 to 8 institute
The rotor stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805327.4A CN108880037B (en) | 2018-07-20 | 2018-07-20 | Motor rotor, assembling method thereof and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805327.4A CN108880037B (en) | 2018-07-20 | 2018-07-20 | Motor rotor, assembling method thereof and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108880037A true CN108880037A (en) | 2018-11-23 |
| CN108880037B CN108880037B (en) | 2020-02-11 |
Family
ID=64303768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810805327.4A Active CN108880037B (en) | 2018-07-20 | 2018-07-20 | Motor rotor, assembling method thereof and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108880037B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256924A (en) * | 2018-11-27 | 2019-01-22 | 珠海格力电器股份有限公司 | Rotor core, motor and air-conditioning system |
| CN109327089A (en) * | 2018-11-27 | 2019-02-12 | 珠海格力电器股份有限公司 | Rotor, motor and air-conditioning system |
| CN109510349A (en) * | 2018-11-27 | 2019-03-22 | 珠海格力电器股份有限公司 | Punching, rotor, motor and air-conditioning system |
| CN110176817A (en) * | 2019-06-26 | 2019-08-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, rotor, motor, compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1107428A2 (en) * | 1999-12-09 | 2001-06-13 | General Electric Company | A high voltage generator stator with radially inserted cable windings and assembly method |
| CN2904438Y (en) * | 2006-04-29 | 2007-05-23 | 刘洪预 | Full aluminium cast permanent magnetic rotor for permanent magnetic motor |
| JP2011097742A (en) * | 2009-10-29 | 2011-05-12 | Toyota Boshoku Corp | Laminated core, and injection molding method and injection molding device of the same |
| CN202586689U (en) * | 2012-04-25 | 2012-12-05 | 山西北方机械制造有限责任公司 | Permanent magnet synchronous motor |
| CN107453504A (en) * | 2017-07-26 | 2017-12-08 | 北京交通大学 | A kind of permagnetic synchronous motor cage-type rotor with composite radiating structure |
| CN207304196U (en) * | 2017-09-19 | 2018-05-01 | 襄阳航力机电技术发展有限公司 | A kind of built-in radial permanent magnet rotor structure |
-
2018
- 2018-07-20 CN CN201810805327.4A patent/CN108880037B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1107428A2 (en) * | 1999-12-09 | 2001-06-13 | General Electric Company | A high voltage generator stator with radially inserted cable windings and assembly method |
| CN2904438Y (en) * | 2006-04-29 | 2007-05-23 | 刘洪预 | Full aluminium cast permanent magnetic rotor for permanent magnetic motor |
| JP2011097742A (en) * | 2009-10-29 | 2011-05-12 | Toyota Boshoku Corp | Laminated core, and injection molding method and injection molding device of the same |
| CN202586689U (en) * | 2012-04-25 | 2012-12-05 | 山西北方机械制造有限责任公司 | Permanent magnet synchronous motor |
| CN107453504A (en) * | 2017-07-26 | 2017-12-08 | 北京交通大学 | A kind of permagnetic synchronous motor cage-type rotor with composite radiating structure |
| CN207304196U (en) * | 2017-09-19 | 2018-05-01 | 襄阳航力机电技术发展有限公司 | A kind of built-in radial permanent magnet rotor structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256924A (en) * | 2018-11-27 | 2019-01-22 | 珠海格力电器股份有限公司 | Rotor core, motor and air-conditioning system |
| CN109327089A (en) * | 2018-11-27 | 2019-02-12 | 珠海格力电器股份有限公司 | Rotor, motor and air-conditioning system |
| CN109510349A (en) * | 2018-11-27 | 2019-03-22 | 珠海格力电器股份有限公司 | Punching, rotor, motor and air-conditioning system |
| CN110176817A (en) * | 2019-06-26 | 2019-08-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, rotor, motor, compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108880037B (en) | 2020-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108880037A (en) | Rotor and its assembly method, motor | |
| EP3240144B1 (en) | Sleeve rotor synchronous reluctance electric machine | |
| EP2564492B1 (en) | Synchronous generator, especially for wind turbines | |
| CA2830030C (en) | Magnetic wedge | |
| CN102306995A (en) | Permanent magnet biased bearingless switched reluctance motor | |
| EP3675329A1 (en) | Motor rotor and permanent magnet motor | |
| CN102754317A (en) | Rotor having a short circuit cage | |
| CA2635391A1 (en) | Assembly and method for magnetization of permanent magnet rotors in electrical machines | |
| EP2456048A2 (en) | Rotor structure for a fault-tolerant permanent magnet electromotive machine | |
| CN104380584A (en) | Electric motor having embedded permanent magnet, compressor, and cooling/air-conditioning device | |
| CN104184234A (en) | Hybrid excitation double-air-gap claw pole motor | |
| CN208386264U (en) | Speed permanent magnet synchronous motor rotor, motor | |
| CN109038991A (en) | A kind of 36/4 structure high-speed magneto | |
| EP3232537B1 (en) | Interior permanent magnet rotor hubs | |
| US10236733B2 (en) | Magnetic mass for rotor, rotor manufacturing process and corresponding electrical machine | |
| CN208986801U (en) | Rotor core, motor and air-conditioning system | |
| CN109510349A (en) | Punching, rotor, motor and air-conditioning system | |
| CA2384574A1 (en) | A high power density super-conducting electric machine | |
| CN108880054A (en) | Speed permanent magnet synchronous motor rotor and its assembly method, motor | |
| US2073760A (en) | Synchronous machine | |
| CN109256924A (en) | Rotor core, motor and air-conditioning system | |
| CN208986710U (en) | Punching, rotor, motor and air-conditioning system | |
| CN108736611B (en) | Motor rotor and motor | |
| CN207504658U (en) | Replace pole motor and with its compressor | |
| US20180205275A1 (en) | Surface mount permanent magnet attachment for electric machine |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |