CN106877578A - A kind of oil cooling, low consumption internal rotor permanent-magnetic motor - Google Patents
A kind of oil cooling, low consumption internal rotor permanent-magnetic motor Download PDFInfo
- Publication number
- CN106877578A CN106877578A CN201710288685.8A CN201710288685A CN106877578A CN 106877578 A CN106877578 A CN 106877578A CN 201710288685 A CN201710288685 A CN 201710288685A CN 106877578 A CN106877578 A CN 106877578A
- Authority
- CN
- China
- Prior art keywords
- rotor
- magnet steel
- precession
- stator
- drainage trough
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- 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
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of oil cooling, low consumption internal rotor permanent-magnetic motor, belong to machine field, and the purpose of the present invention is to reduce oily abrasion consumption, improves heat-sinking capability, and then improve the power density for being applied to oil-filled environment motor.The present invention includes stator and rotor, and stator includes casing, stator core, insulating barrier, axial bond, multiple stator coils and two end caps；Rotor includes armature spindle, rotor rim, two bearings and multiple magnet steel.The invention is characterized in that interior angle is cut in the inner arc surface both sides of each magnet steel；Precession drainage trough is provided with vertically on the rotor outer circle face being made up of multiple magnet steel；Chute excessively is provided with tiltedly vertically in the inner headed face of rotor rim, and multiple oblique chutes excessively are circumferentially symmetrical；When the direct moulding by casting of stator core, multiple return ports should be reserved in its yoke portion, or multiple backflashes are reserved at its back, for oil provides passage in motor internal circulation.Power density can be improved using such motor under oil-filled hot environment, is had great practical value.
Description
Technical field
The present invention relates to a kind of internal rotor permanent-magnetic motor, belong to machine field.
Background technology
In Design of PM Motor, in order to reduce the harmonic wave of air-gap field, more using the design for not waiting air gap, bonding
The outer surface that magnet steel in rotor rim is formed is not the smooth face of cylinder（As shown in figure 15）, but there is projection.
In some working environments, motor is run in being dipped in oil, and internal oil-filled, and spy is can bring about compared to the motor for running in atmosphere
Different problem.First, when rotor is moved in a fluid, the outer surface of Non-smooth surface causes the oily abrasion consumption of larger resistance, motor to increase
Plus, efficiency reduction, the power density of whole system declines.Secondly, the oil in existing oil-filled magneto air gap is substantially week
To flowing, axially flowing is smaller, and the transmission of heat relies primarily on heat transfer, the thermal conduction characteristic for not making full use of oil good.
The content of the invention
It is an object of the invention to provide a kind of oil cooling, low consumption internal rotor permanent-magnetic motor, it can reduce oily abrasion consumption, improve and dissipate
Heat energy power, and then improve the power density for being applied to oil-filled environment motor.
Above-mentioned purpose is realized, the technical scheme that the present invention takes is as follows：
A kind of oil cooling, low consumption internal rotor permanent-magnetic motor, it includes stator and rotor, described stator include casing, stator core,
Insulating barrier, axial bond, multiple stator coils and two end caps；Described rotor include armature spindle, rotor rim, two bearings and
Multiple magnet steel；Described rotor rim is fixed on armature spindle periphery, and rotor rim periphery is located on same circumference successively
Multiple magnet steel are closely placed with, the two ends of armature spindle are respectively rotated with two end caps by a bearing and are connected, described casing ring
Multiple magnet steel outsides are sleeved on, casing is detachably fixed by screw with two end caps and is connected, and ring set is equipped with the outside of multiple magnet steel
Stator core, is provided with radial clearance between described stator core and magnet steel, stator core has along the circumferential direction been uniformly arranged many
The individual mounting groove communicated with stator core inner headed face, the mounting groove inner surface described in each is equipped with insulating barrier, each mounting groove
Stator coil is inside provided with, stator core is detachably fixed by axial bond with casing and is connected；
Cut interior angle in the inner arc surface both sides of each magnet steel（Retain the magnet steel exterior arc surface close with air gap side, magnet steel of pruning
Two jiaos of the inner arc surface close with rotor rim side.Because remaining the complete exterior arc surface of magnet steel, formed after magnet steel splicing
Rotor outer surface be still the smooth face of cylinder）；At least one is provided with vertically on the periphery being made up of multiple magnet steel
Precession drainage trough；At least two oblique chutes excessively, and all of oblique chute edge excessively are provided with vertically in the inner headed face of rotor rim
Circumference is symmetrical；When the direct moulding by casting of stator core, multiple return ports are reserved in the yoke portion of stator core, or at it
Back reserves multiple backflashes, for oil provides passage in motor internal circulation, oil through is equipped with each end cap.
The present invention is relative to the beneficial effect of prior art：
1st, use and cut interior angle magnet steel in the present invention, that is, retain the magnet steel exterior arc surface close with air gap side, prune magnet steel and
Two jiaos of the close inner arc surface in rotor rim side.Because remaining the complete exterior arc surface of magnet steel, formed after magnet steel splicing
Rotor outer surface is still the smooth face of cylinder.Compared with using the magneto of the kind of air-gap design such as not, motor turns in the present invention
Resistance reduction during son rotation, oily abrasion depletion is small, and power of motor density is improved.Additionally, magnet steel is cut outside interior angle and rotor rim
Disc forms a plurality of axial passage, is run through in motor internal beneficial to oil, increases oil inlet quantity in motor, accelerates motor internal heat
The conduction of amount, improves heat-sinking capability.The air-gap field schematic diagram for cutting interior angle magnet steel and traditional tile shape magnet steel in the present invention（Such as
Shown in Figure 16）, by contrast it can be found that the Gas-gap Magnetic Field Resonance Wave for cutting the generation of interior angle magnet steel is substantially reduced.
2nd, with the rotor of precession drainage slot structure（Left-handed or dextrorotation precession drainage is processed in rotor outer surface
Groove）, when rotor uprightly is placed on into horizontal plane, precession drainage trough rotates to rise in the counterclockwise direction and is left-handed precession drainage
Groove；Precession drainage trough is rotated in a clockwise direction the precession drainage trough for rising and being dextrorotation.Wherein, the cross section of precession drainage trough
Shape can be rectangle, semicircle, triangle or trapezoidal.Cross section is designed into above shape can be such that rotor banding moves around it
Oil motion.Precession drainage groove processing is on the outer surface that multiple magnet steel arrange the cylinder-like structure to be formed.Furthermore, it is possible to according to
Specific design demand, increases precession drainage trough quantity.When motor rotates, near the precession drainage trough of rotor outer surface can drive
Oil axially moved while circumferential movement, accelerate motor internal heat conduction, improve heat-sinking capability, improve motor work(
Rate density.
3rd, multiple is set on rotor punching to be communicated with its inner circle, and circumferentially symmetrical breach, in lamination process
Adjacent rotor punching staggers certain angle successively, and composition is with the oblique rotor rim for crossing chute.All of oblique chute of crossing is inclined
Direction is identical.In motor operation course, can not only be flowed through from air gap from the oil of oil through injection, can also be from the oblique of rotor rim
Chute is crossed to flow through；Additionally, oblique chute of crossing produces suction when being rotated with rotor to oil, accelerate circulation speed of the oil in motor internal
Degree, heat radiation ability.
4th, when the direct moulding by casting of stator core, multiple return ports are reserved in its yoke portion, or is reserved at its back many
Individual backflash, for oil provides passage in motor internal circulation.Stator core adds axial hole only to be applied in ventilated machine, purpose
It is the ventilation for increasing motor.Never used in oil charging motor, the purpose of the measure is to form leading to for oil circulation in the present invention
Road.
Brief description of the drawings
Fig. 1 is a kind of oil cooling of the invention, the main sectional view of low consumption internal rotor permanent-magnetic motor, the stator winding that motor is related to
It is distributed frame；
Fig. 2 is the sectional view of the Section A-A of Fig. 1；
Fig. 3 is a kind of oil cooling of the invention, the main sectional view of low consumption internal rotor permanent-magnetic motor, and the stator winding that motor is related to is collection
Structure of Chinese style；
Fig. 4 is the sectional view of the section B-B of Fig. 3；
Fig. 5 is the structural representation of magnet steel, and interior angle is cut in magnet steel inner arc surface both sides therein, and the described surface for cutting interior angle is
Inclined-plane；
Fig. 6 is the structural representation of magnet steel, and interior angle is cut in magnet steel inner arc surface both sides therein, and the described surface for cutting interior angle is
The arc surface of convex；
Fig. 7 is the structural representation of magnet steel, and interior angle is cut in magnet steel inner arc surface both sides therein, and the described surface for cutting interior angle is
The arc surface for concaving；
Fig. 8 is the structural representation of magnet steel, and interior angle is cut in magnet steel inner arc surface both sides therein, and described interior angle of cutting is shaped as V
Font；
Fig. 9 is the structural representation of the magnet steel with precession drainage trough, and described precession drainage trough is left-handed precession drainage trough；
Figure 10 is the structural representation of the magnet steel with precession drainage trough, and described precession drainage trough is the precession drainage trough of dextrorotation；
Figure 11 is the structural representation for tiltedly crossing chute, and described oblique chute of crossing is left oblique oblique to cross chute；
Figure 12 is the structural representation for tiltedly crossing chute, and described oblique chute of crossing is right oblique oblique to cross chute；
Figure 13 is the structural representation of stator core, and return port is reserved in the yoke portion of stator core；
Figure 14 is the structural representation of stator core, and backflash is reserved at the back of stator core；
Figure 15 is the structural representation of prior art；
Figure 16 is the air-gap field schematic diagram for cutting interior angle magnet steel and traditional tile shape magnet steel in the present invention, and wherein curve C is to cut
The airgap density distribution curve of interior angle magnet steel, curve D is the airgap density distribution curve of traditional tile shape magnet steel.
Detailed description of main elements：
Armature spindle 1, bearing 2, end cap 3, oil through 3-1, casing 4, stator coil 5, stator core 6, return port 6-1, backflash
6-2, magnet steel 7, precession drainage trough 7-1, rotor rim 8, oblique cross chute 8-1, insulating barrier 9, axial bond 10, screw 11, cut interior angle
12nd, axial passage 13.
Technical scheme is further described below in conjunction with the accompanying drawings, but is not limited thereto, it is every to this
Inventive technique scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention, all should be covered
In protection scope of the present invention.
Specific embodiment
Specific embodiment one：As shown in Fig. 1 ~ Figure 14, present embodiment record be a kind of oil cooling, low consumption internal rotor forever
Magneto, it includes stator and rotor, and described stator includes casing 4, stator core 6, insulating barrier 9, axial bond 10, Duo Geding
Subcoil 5 and two end caps 3；Described rotor includes armature spindle 1,8, two bearings 2 of rotor rim and multiple magnet steel 7；It is described
Rotor rim 8 be fixed on the periphery of armature spindle 1, the periphery of rotor rim 8 be located at same circumference on be closely placed with successively
Multiple magnet steel 7, the two ends of armature spindle 1 are respectively rotated with two end caps 3 by a bearing 2 and are connected, and the described ring set of casing 4 is mounted in
The outside of multiple magnet steel 7, casing 4 is detachably fixed by screw 11 with two end caps 3 and is connected, and the outside ring set of multiple magnet steel 7 is equipped with
Stator core 6, is provided with radial clearance between described stator core 6 and magnet steel 7, stator core 6 is along the circumferential direction uniformly arranged
There are multiple mounting grooves communicated with the inner headed face of stator core 6, the mounting groove inner surface described in each is equipped with insulating barrier 9, each
Stator coil 5 is provided with mounting groove, stator core 6 is detachably fixed by axial bond 10 with casing 4 and is connected；
Cut interior angle 12 in the inner arc surface both sides of each magnet steel 7（Retain the exterior arc surface close with air gap side of magnet steel 7, prune
Two jiaos of the inner arc surface close with the side of rotor rim 8 of magnet steel 7.Because remaining the complete exterior arc surface of magnet steel 7, magnet steel 7 is spelled
The rotor outer surface formed after connecing is still the smooth face of cylinder）；It is provided with vertically on the periphery being made up of multiple magnet steel 7
At least one precession drainage trough 7-1；At least two oblique chute 8-1 excessively, and institute are provided with vertically in the inner headed face of rotor rim 8
The oblique chute 8-1 excessively having is circumferentially symmetrical；When 6 direct moulding by casting of stator core, reserved in the yoke portion of stator core 6
Multiple return port 6-1, or multiple backflash 6-2 are reserved at its back, for oil provides passage in motor internal circulation, each end
Oil through 3-1 is equipped with lid 3.
Specific embodiment two：As shown in Figure 2 and Figure 4, present embodiment is described further to specific embodiment one,
The interior angle 12 of cutting of described multiple magnet steel 7 forms a plurality of axial passage 13 with the periphery of rotor rim 8.
Specific embodiment three：As shown in Figure 9 and Figure 10, present embodiment is made furtherly to specific embodiment one
Bright, described precession drainage trough 7-1 is left-handed or dextrorotation precession drainage trough 7-1, described left-handed or dextrorotation precession drainage
The setting principle of groove 7-1 is：When rotor uprightly is placed on into horizontal plane, precession drainage trough 7-1 rotates rising in the counterclockwise direction
As left-handed precession drainage trough 7-1；Precession drainage trough 7-1 is rotated in a clockwise direction the precession drainage trough for rising and being dextrorotation
7-1, wherein, the shape of cross section of precession drainage trough 7-1 is rectangle, semicircle, triangle or trapezoidal.
Specific embodiment four：As is illustrated by figs. 11 and 12, present embodiment is made furtherly to specific embodiment one
Bright, the process of described oblique chute 8-1 excessively is：Set on several rotor punchings of composition rotor rim 8 it is multiple and its
Inner circle is communicated, and circumferentially symmetrical breach, and adjacent rotor punching staggers certain angle successively in lamination process, composition
With at least two oblique rotor rims 8 of chute 8-1 excessively, all oblique chute 8-1 incline directions excessively are consistent, you can with a left side tiltedly,
Can be with right oblique.
Claims (4)
1. a kind of oil cooling, low consumption internal rotor permanent-magnetic motor, it includes stator and rotor, and described stator includes casing（4）, stator
Iron core（6）, insulating barrier（9）, axial bond（10）, multiple stator coils（5）And two end caps（3）；Described rotor includes rotor
Axle（1）, rotor rim（8）, two bearings（2）And multiple magnet steel（7）；Described rotor rim（8）It is fixed on armature spindle（1）Outward
On disc, rotor rim（8）Periphery is located on same circumference and is closely placed with multiple magnet steel successively（7）, armature spindle（1）Two
End respectively passes through a bearing（2）With two end caps（3）Rotate connection, described casing（4）Ring set is mounted in multiple magnet steel（7）Outward
Side, casing（4）With two end caps（3）By screw（11）It is detachably fixed connection, multiple magnet steel（7）Outside ring set is equipped with stator
Iron core（6）, described stator core（6）With magnet steel（7）Between be provided with radial clearance, stator core（6）It is along the circumferential direction uniform
It is provided with multiple and stator core（6）The mounting groove that inner headed face is communicated, the mounting groove inner surface described in each is equipped with insulating barrier
（9）, stator coil is provided with each mounting groove（5）, stator core（6）With casing（4）By axial bond（10）Detachably
It is fixedly connected；
It is characterized in that：Each magnet steel（7）Inner arc surface both sides cut interior angle（12）（Retain magnet steel（7）With air gap side phase
Near exterior arc surface, magnet steel of pruning（7）With rotor rim（8）Two jiaos of the close inner arc surface in side；
Because remaining magnet steel（7）Complete exterior arc surface, magnet steel（7）The rotor outer surface formed after splicing is still smooth
The face of cylinder）；By multiple magnet steel（7）At least one precession drainage trough is provided with the periphery of composition vertically（7-1）；In rotor
Yoke（8）Inner headed face be provided with vertically at least two it is oblique cross chutes（8-1）, and all of oblique chute excessively（8-1）Circumferentially
It is symmetrical；Work as stator core（6）During direct moulding by casting, in stator core（6）Yoke portion reserve multiple return ports（6-1）,
Or reserve multiple backflashes at its back（6-2）, for oil provides passage in motor internal circulation.
2. a kind of oil cooling according to claim 1, low consumption internal rotor permanent-magnetic motor, it is characterised in that described multiple magnetic
Steel（7）Cut interior angle（12）With rotor rim（8）Periphery forms a plurality of axial passage（13）.
3. a kind of oil cooling according to claim 1, low consumption internal rotor permanent-magnetic motor, it is characterised in that described precession is drawn
Chute（7-1）It is left-handed or dextrorotation precession drainage trough（7-1）, described left-handed or dextrorotation precession drainage trough（7-1）Set
Putting principle is：When rotor uprightly is placed on into horizontal plane, precession drainage trough（7-1）Rotation in the counterclockwise direction rises as left-handed
Precession drainage trough（7-1）；Precession drainage trough（7-1）It is rotated in a clockwise direction the precession drainage trough for rising and being dextrorotation（7-
1）, wherein, precession drainage trough（7-1）Shape of cross section be rectangle, semicircle, triangle or trapezoidal.
4. a kind of oil cooling according to claim 1, low consumption internal rotor permanent-magnetic motor, it is characterised in that described oblique excessively stream
Groove（8-1）Process be：In composition rotor rim（8）Several rotor punchings on set multiple communicated with its inner circle, and
Circumferentially symmetrical breach, adjacent rotor punching staggers certain angle successively in lamination process, and composition carries at least two
Individual oblique chute excessively（8-1）Rotor rim（8）, all oblique chutes excessively（8-1）Incline direction is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288685.8A CN106877578B (en) | 2017-04-27 | 2017-04-27 | A kind of oil is cold, low consumption internal rotor permanent-magnetic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288685.8A CN106877578B (en) | 2017-04-27 | 2017-04-27 | A kind of oil is cold, low consumption internal rotor permanent-magnetic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106877578A true CN106877578A (en) | 2017-06-20 |
| CN106877578B CN106877578B (en) | 2018-11-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710288685.8A Active CN106877578B (en) | 2017-04-27 | 2017-04-27 | A kind of oil is cold, low consumption internal rotor permanent-magnetic motor |
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| CN (1) | CN106877578B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222932A (en) * | 2018-01-31 | 2018-06-29 | 湖北环电磁装备工程技术有限公司 | The cutting part of heading machine driving device that a kind of no frame permanent magnet synchronous motor directly drives |
| CN109713820A (en) * | 2018-12-24 | 2019-05-03 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of oil immersed type magneto |
| CN110005782A (en) * | 2019-04-17 | 2019-07-12 | 艾德斯汽车电机无锡有限公司 | Magnetic gear-shift mechanism structure |
| CN111049325A (en) * | 2019-12-26 | 2020-04-21 | 珠海格力电器股份有限公司 | Rotor structure, motor and centrifuge with same |
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|---|---|---|---|---|
| JP2010148230A (en) * | 2008-12-18 | 2010-07-01 | Honda Motor Co Ltd | Toroidal winding motor |
| EP2256907A1 (en) * | 2009-05-18 | 2010-12-01 | Bombardier Transportation GmbH | An electric machine |
| CN104333160A (en) * | 2014-11-07 | 2015-02-04 | 浙江众邦机电科技有限公司 | Motor rotor |
| CN205509727U (en) * | 2016-02-29 | 2016-08-24 | 山东泰丰制动系统科技股份有限公司 | New energy automobile PMSM |
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2017
- 2017-04-27 CN CN201710288685.8A patent/CN106877578B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010148230A (en) * | 2008-12-18 | 2010-07-01 | Honda Motor Co Ltd | Toroidal winding motor |
| EP2256907A1 (en) * | 2009-05-18 | 2010-12-01 | Bombardier Transportation GmbH | An electric machine |
| CN104333160A (en) * | 2014-11-07 | 2015-02-04 | 浙江众邦机电科技有限公司 | Motor rotor |
| CN205509727U (en) * | 2016-02-29 | 2016-08-24 | 山东泰丰制动系统科技股份有限公司 | New energy automobile PMSM |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222932A (en) * | 2018-01-31 | 2018-06-29 | 湖北环电磁装备工程技术有限公司 | The cutting part of heading machine driving device that a kind of no frame permanent magnet synchronous motor directly drives |
| CN109713820A (en) * | 2018-12-24 | 2019-05-03 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of oil immersed type magneto |
| CN110005782A (en) * | 2019-04-17 | 2019-07-12 | 艾德斯汽车电机无锡有限公司 | Magnetic gear-shift mechanism structure |
| CN111049325A (en) * | 2019-12-26 | 2020-04-21 | 珠海格力电器股份有限公司 | Rotor structure, motor and centrifuge with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106877578B (en) | 2018-11-20 |
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Effective date of registration: 20200806 Address after: 2 / F, No.7 factory building, No.32, Bohai Road, Harbin Economic Development Zone, Heilongjiang Province Patentee after: Harbin Institute of technology Shenneng Motor Co., Ltd Address before: 150000 Harbin, Nangang, West District, large straight street, No. 92 Patentee before: HARBIN INSTITUTE OF TECHNOLOGY |
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