CN107742935A - Magnetic suspension high speed motor with novel air-cooled structure - Google Patents
Magnetic suspension high speed motor with novel air-cooled structure Download PDFInfo
- Publication number
- CN107742935A CN107742935A CN201710964433.2A CN201710964433A CN107742935A CN 107742935 A CN107742935 A CN 107742935A CN 201710964433 A CN201710964433 A CN 201710964433A CN 107742935 A CN107742935 A CN 107742935A
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- Prior art keywords
- air
- magnetic suspension
- cooled
- suspension bearing
- high speed
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- 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
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- 239000000725 suspension Substances 0.000 title claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 238000009423 ventilation Methods 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 17
- 239000011229 interlayer Substances 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000013461 design Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000003137 locomotive effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The present invention relates to a kind of magnetic suspension high speed motor with novel air-cooled structure, including stator, stator winding, rotor, the magnetic suspension bearing being installed in the casing of motor, air inlet, air outlet are provided with casing.Air inlet, air outlet are connected by multiple tracks cooling air duct, and at least one of cooling air duct is used to cool down stator winding, rotor and stator, and at least one of cooling air duct is air-cooled bypass, for cooling down magnetic suspension bearing；Air-cooled bypass is with the interconnecting part for connecting the both ends of magnetic suspension bearing, and with being connected on the inside of air intake magnetic suspension bearing, air outlet is connected air inlet with being connected on the inside of outlet air end magnetic suspension bearing on the outside of the magnetic suspension bearing of both ends by air-cooled bypass portion.The present invention greatly reduces the flow resistance of motor internal using parallel ventilation branch so that the power of air-cooled draught fan matching can greatly reduce, and reduce the cost of supporting air cooler.
Description
Technical field
The present invention relates to magnetic suspension high speed motor technical field, and in particular to a kind of magnetcisuspension with novel air-cooled structure
Floating high-speed electric expreess locomotive.
Background technology
In the prior art, magnetic suspension high speed motor has the characteristics of efficiency high, power density is big, is lost accordingly close
Degree is also bigger, and temperature rise is all higher everywhere for motor.Mistake high temperature rise at stator winding will cause winding insulation failure, rotor
Cross high temperature rise and can cause permanent magnet demagnetization, cross high temperature rise at magnetic bearing and can cause magnetic bearings control precise decreasing.To ensure motor
Safe and stable operation is, it is necessary to which the characteristics of being directed to magnetic suspension high speed motor develops novel cooling structure.While in order to ensure motor
Moistureproof explosion-proof dustproof anticorrosive performance, electric drilling match cooling system generally use air-water cooler of motor or motor hollow cooler.
Such cooler air inlet is connected with motor air outlet, and cooler air outlet is connected with motor air inlet.Cool down the air of motor
Ensure the sealing of system in motor-cooler inner loop, reach the purpose of moistureproof explosion-proof dustproof anticorrosive.
In the prior art, there is air-cooled structure as shown in Fig. 2 cooling air is blown into other end blowout from winding one end, only
A small amount of air blows over the side of magnetic suspension bearing.Such cooling structure can not be cooled down effectively to magnetic suspension bearing, will be led
Cause magnetic suspension bearing temperature rise too high, control accuracy declines, and influences motor stabilizing operation.
During fluid flows through passageway due to wall friction, flow section change etc. can all cause fluid pressure loss, lose
Summation is pressure drop.Cooling system draught fan matching pressure and cooling system overall presure drop need to match.Larger pressure drop cooling system needs
With high pressure positive blower, and high pressure positive blower volume is larger, and cost is higher, and air quantity relative deficiency.Further air-cooled structure technology
Have as shown in figure 3, cooling air is blown into from one section of magnetic bearing, air gap between stator and rotor is blown over after magnetic bearing, finally
Blown out by other end magnetic bearing.Although such cooling structure can be cooled down directly to the magnetic bearing at both ends, due to cooling
Air needs to pass twice through magnetic bearing, and the ventilation gap of magnetic bearing is smaller, causes the pressure drop in whole air-cooled path very
Greatly.This causes to be difficult to find the blower fan to match in existing blower fan type spectrum, and the blower fan for adapting to such a operating mode reluctantly is universal
Price is high.And temperature is very high when cooling air finally blows over outlet air end magnetic bearing, to the cold of outlet air end magnetic bearing
It is ineffective.And the air inlet air outlet of motor is located at magnetic bearing both sides respectively, apart from each other, substantially increase with
Cooling system coordinates the difficulty of installation.
Further air-cooled structure technology has as shown in figure 4, cooling air is blown into from winding one end, is first divided into two-way,
Blown out all the way by inlet side magnetic bearing；All the way from air outlet or warp at other end winding after air gap between stator and rotor
Opposite side magnetic bearing is discharged, and is also deposited simultaneously from the structure of this discharge at two.Although such air-cooled structure can carry out cold to magnetic bearing
But, but motor air outlet has two to three places and is located at magnetic bearing both sides respectively, it is virtually impossible to coordinates with cooling system and installs.
Therefore, in magnetic suspension high speed motor, how to realize and both rotor, stator are cooled down, and can is entered to magnetic suspension bearing
Row cooling, it is the major issue faced in current magnetic suspension high speed motor research and development.
The content of the invention
The present invention is for problem present in current magnetic suspension high speed motor cooling procedure, there is provided one kind is with new
The magnetic suspension high speed motor of air-cooled structure, including casing, stator, stator winding, rotor, magnetic suspension bearing, stator, stator around
Resistance, rotor, magnetic suspension bearing are mounted in the casing of motor, and air inlet, air outlet are provided with casing, and air inlet, are gone out
Air port can be several.Preferably, air inlet and each one of air outlet, are generally aligned in the same plane, and are so easy to and cooler
Coordinated.Motor case stator winding both ends corresponding position sets air inlet, air outlet respectively, and if according to preferred scheme
Air inlet only has one with air outlet, then they are preferably located in same plane.Air inlet, air outlet are cooled down by multiple tracks
Wind path is connected, and at least one of cooling air duct is used to cool down stator winding, rotor and stator, the cooling that air inlet is come in
Air can be blown over air gap between stator winding, rotor and stator by cooling air duct and be discharged by air outlet, realize cooling stator
The purpose of winding, rotor and stator；At least one of cooling air duct is air-cooled bypass, for cooling down magnetic suspension bearing；Air-cooled bypass
With by the interconnecting part of the both ends of magnetic suspension bearing connection, air inlet with being connected on the inside of air intake magnetic suspension bearing, air outlet and
Connect on the inside of outlet air end magnetic suspension bearing, be connected on the outside of the magnetic suspension bearing of both ends by air-cooled bypass portion.Enter from air inlet
The cooling air entered flows through air intake magnetic suspension bearing and enters air-cooled bypass portion, passes through the connection of air-cooled bypass again thereafter
Portion flows to outlet air end magnetic suspension bearing, is discharged after blowing over outlet air end magnetic suspension bearing through air outlet.By setting air-cooled bypass to make
Magnetic suspension bearing and motor stator, stator winding and rotor can be blown in parallel by obtaining cooling air, reduce magnetic suspension shaft
The temperature rise with the part such as motor stator, rotor is held, ensures magnetic suspension motor safe and stable operation.And the present invention is using in parallel
Wind path greatly reduces the flow resistance of motor internal so that the power of air-cooled draught fan matching can greatly reduce, and reduce supporting
The cost of air cooler.In addition if the present invention only has an air inlet and an air outlet, and it is generally aligned in the same plane, can be with
Significantly reduce the difficulty for coordinating installation with cooling system.
Further, pipeline of the described air-cooled bypass for setting on the housing.
Preferably, air-cooled bypass includes wind-collecting cover and some ventilation ducts, and wind-collecting cover is two, is separately positioned on magnetcisuspension
Outside the both ends that floating axle is held, ventilation duct connects two described wind-collecting covers.Wind-collecting cover is mainly auxiliary bypass pipeline by both ends
Connected on the outside of magnetic suspension bearing, if housing design can also rationally serve as the function of wind-collecting cover.The advantages of this design, is
Structure of modification is fairly simple, not extra increased air inlet and air outlet.Further, ventilation duct both can be steel pipe, also may be used
To be tubing made of other high strength and corrosion resistant alloy materials, preferably nickel base superalloy seamless steel pipe.
Preferably, described ventilation duct is reinforcement pipe, and the requirement of this reinforcement pipe and ventilation duct is basically identical.
This reinforcement pipe can be welded as a whole with the casing of motor, because motor is under the working environments such as high speed vibration, by setting
Reinforcement pipe is put, the structural stability of high-speed electric expreess locomotive can be strengthened, extends the service life of high-speed electric expreess locomotive.
Preferably, casing is additionally provided with ventilating interlayer, and this ventilating interlayer is the connection of above-mentioned air-cooled bypass
Portion, one end of ventilating interlayer connect with the outside of air intake magnetic suspension bearing, the outside of the other end and outlet air end magnetic suspension bearing
Connection, ventilating interlayer constitute air-cooled bypass.This ventilating interlayer can be realized by casting casing, casting machine shell phase is than weldering
The shell that picks has the advantage that cost is relatively low, the process-cycle is short.Further, some reinforcements are provided with ventilating interlayer, so may be used
To ensure the intensity of whole motor.It should be noted that the design of reinforcement needs to ensure the connection and ventilation of ventilating interlayer
Effect, therefore its density set can not be excessively intensive.Further, preferable design method is to make reinforcement to be axially arranged,
Arranged along the central axis direction of casing.
Preferably, reinforcement, ventilating interlayer are integrally formed when casing is produced with casing.
Compared with prior art, its is beneficial to have the technical effect that the present invention：
1st, designed by rational air-cooled structure, ensured motor safety stable operation, especially to being difficult in conventional art
The magnetic suspension bearing effectively cooled down is effectively cooled down, and has ensured the control accuracy of magnetic suspension bearing.
2nd, due to devising air-cooled bypass, reduce the flow resistance of cooling air duct, it is very big reduce it is air-cooled during pressure
Drop, reduce the cost of draught fan matching.
3rd, in decision design, due to there was only an air inlet and an air outlet, and it is generally aligned in the same plane, and the earth
Reduce the difficulty for coordinating installation with cooling system.
Brief description of the drawings
In order to illustrate more clearly of the present invention, the required accompanying drawing used is made simply in being described below to embodiment
Introduce.It should be evident that drawings in the following description are only the description to embodiments of the invention, it is common for this area
For technical staff, without having to pay creative labor, can also according to technical scheme carry out simple deformation or
Title changes, or takes customary means, can also realize goal of the invention.
Fig. 1：A kind of fundamental diagram of the magnetic suspension high speed motor with novel air-cooled structure
Fig. 2：The existing magnetic suspension high speed motor with air-cooled structure
Fig. 3：The existing magnetic suspension high speed motor with air-cooled structure
Fig. 4：The existing magnetic suspension high speed motor with air-cooled structure
Fig. 5：A kind of motor that air-cooled bypass is made up of ventilating interlayer
Fig. 6：A kind of motor that air-cooled bypass is made up of ventilation duct
Fig. 7：A kind of motor sectional view that air-cooled bypass is made up of ventilating interlayer in embodiment 1
Fig. 8：A kind of motor sectional view that air-cooled bypass is made up of ventilation duct in embodiment 2
Embodiment
With reference to embodiment, the present invention is described in further detail, and following examples are explanation of the invention
And the invention is not limited in following examples.
Embodiment 1
As shown in Fig. 1, Fig. 5, Fig. 7, a kind of magnetic-suspension high-speed electricity with novel air-cooled structure is present embodiments provided
Machine, including casing 1, stator 2, stator winding 3, rotor 4, magnetic suspension bearing 5, air inlet 6 and air outlet 7 are designed with casing.
The air-cooled bypass of the present invention is that ventilating interlayer 8 is devised on casing 1 to realize function.
As shown in figure 1, when cooling air enters fashionable from air inlet 6, there is one cooling air duct to be used to cool down stator 2, stator
Winding 3 and rotor 4, and another road cooling air can also by the gap on magnetic suspension bearing between rotor, and along
Air-cooled bypass, the other end of magnetic suspension bearing is flowed to, for cooling down magnetic suspension bearing.In the present embodiment, ventilating interlayer 8 and machine
Shell 1 is integrally formed, and such overall structure is more firm, effectively extends service life.
As shown in figure 5, the present invention can also design reinforcement 9 in ventilating interlayer 8, this design can further add
The stability of strong high-speed electric expreess locomotive.
Embodiment 2
As shown in Fig. 6, Fig. 8, the present embodiment and the difference of embodiment 1 are, the structure of air-cooled bypass is in magnetic suspension
The both ends of bearing are mounted with wind-collecting cover 10, and two wind-collecting covers are connected by ventilation duct 11, and ventilation duct 11 passes through welding or tube expansion
Technology is connected with casing 1, and in the present embodiment, the ventilation duct 11 for connecting two wind-collecting covers 10 has 8.It is in addition, logical
Supporting plate 12 is also welded between airduct 11 and casing 1, it is this to be designed with beneficial to the overall stability of enhancing high-speed electric expreess locomotive.This
The operation principle of the operation principle of air-cooled bypass and embodiment 1 is consistent in embodiment.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make some improvements and modifications, these improvements and modifications should also regard
For in protection scope of the present invention.Although the present invention is disclosed as above with embodiment, it is not limited to the guarantor of the present invention
Protect scope, any technical staff for being familiar with this technology, in the variation and profit made without departing from the spirit and scope of the invention
Decorations, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of magnetic suspension high speed motor with novel air-cooled structure, including casing, stator, stator winding, rotor, magnetic suspension
Bearing, it is characterised in that include air inlet, air outlet on the casing, the air inlet, air outlet are located at the two of casing respectively
End, the air inlet, air outlet are connected by multiple tracks cooling air duct, and at least one of cooling air duct is air-cooled bypass, is used for
Magnetic suspension bearing is cooled down, at least one of cooling air duct is used to cool down the stator winding, stator and rotor；The air-cooled bypass
With the interconnecting part of the both ends connection of magnetic suspension bearing, the air inlet is described with being connected on the inside of air intake magnetic suspension bearing
Air outlet is connected with being connected on the inside of outlet air end magnetic suspension bearing on the outside of the magnetic suspension bearing of both ends by air-cooled bypass portion.
2. a kind of magnetic suspension high speed motor with novel air-cooled structure as claimed in claim 1, it is characterised in that described
Pipeline of the interconnecting part of air-cooled bypass for setting on the housing.
3. a kind of magnetic suspension high speed motor with novel air-cooled structure as claimed in claim 1, it is characterised in that described
Air-cooled bypass includes wind-collecting cover and some ventilation ducts, and the wind-collecting cover is two, is separately positioned on outside the both ends of magnetic suspension bearing
Portion, the interconnecting part of the air-cooled bypass is ventilation duct, and the ventilation duct connects two described wind-collecting covers.
4. a kind of magnetic suspension high speed motor with novel air-cooled structure as claimed in claim 3, it is characterised in that described
Ventilation duct is reinforcement pipe.
A kind of 5. magnetic suspension high speed motor with novel air-cooled structure as claimed in claim 1, it is characterised in that the machine
Shell is additionally provided with ventilating interlayer, and the interconnecting part of the air-cooled bypass is ventilating interlayer, one end of the ventilating interlayer and magnetic suspension
One end connection of bearing, the other end connect with the other end of magnetic suspension bearing, and the ventilating interlayer constitutes air-cooled bypass.
6. a kind of magnetic suspension high speed motor with novel air-cooled structure as claimed in claim 5, it is characterised in that described
Ventilating interlayer is provided with some reinforcements.
7. a kind of magnetic suspension high speed motor with novel air-cooled structure as claimed in claim 6, it is characterised in that described
Reinforcement is circumferentially disposed.
8. magnetic suspension adjustment motor of any one as described in claim 1 to 7 with novel air-cooled structure, its feature exist
In the making material of described interconnecting part is high strength and corrosion resistant alloy material.
9. magnetic suspension adjustment motor of any one as described in claim 1 to 7 with novel air-cooled structure, its feature exist
In, each one of the air inlet and air outlet, and be generally aligned in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964433.2A CN107742935A (en) | 2017-10-17 | 2017-10-17 | Magnetic suspension high speed motor with novel air-cooled structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964433.2A CN107742935A (en) | 2017-10-17 | 2017-10-17 | Magnetic suspension high speed motor with novel air-cooled structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107742935A true CN107742935A (en) | 2018-02-27 |
Family
ID=61237607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710964433.2A Pending CN107742935A (en) | 2017-10-17 | 2017-10-17 | Magnetic suspension high speed motor with novel air-cooled structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107742935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713847A (en) * | 2019-01-07 | 2019-05-03 | 天津飞旋高速电机科技有限公司 | A kind of magnetic-suspension high-speed magneto and cooling means with air water cooling structure |
| CN118074409A (en) * | 2024-04-17 | 2024-05-24 | 珠海格力电器股份有限公司 | Motor with a motor housing |
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|---|---|---|---|---|
| US4935654A (en) * | 1987-11-27 | 1990-06-19 | Asea Brown Boveri Aktiengesellschaft | Axial magnet bearing |
| CN201629634U (en) * | 2010-01-19 | 2010-11-10 | 天津神川机电有限公司 | Vibration-resistant variable-frequency speed regulating motor with forced cooling system |
| CN103004062A (en) * | 2010-07-28 | 2013-03-27 | 三菱电机株式会社 | Totally-enclosed fan-cooled motor |
| CN204013074U (en) * | 2014-08-08 | 2014-12-10 | 南车株洲电机有限公司 | Totally-enclosed machine and bearing ventilation cooling system thereof |
| CN104901468A (en) * | 2014-03-05 | 2015-09-09 | 泰州市华源电机有限公司 | Internally air-cooled variable-frequency motor |
| CN205725332U (en) * | 2016-04-13 | 2016-11-23 | Abb技术有限公司 | Motor bearings cooling structure and motor |
| CN106300803A (en) * | 2015-05-12 | 2017-01-04 | 江苏华源防爆电机有限公司 | A kind of internally air-cooled formula frequency conversion motor |
| CN106300778A (en) * | 2016-08-02 | 2017-01-04 | 天津飞旋科技研发有限公司 | The pure air-cooled heat dissipation structure of magnetic suspension motor of impeller one |
| CN206490547U (en) * | 2017-02-20 | 2017-09-12 | 深圳市品成电机有限公司 | A kind of micromachine of perfect heat-dissipating |
| CN207518404U (en) * | 2017-10-17 | 2018-06-19 | 天津飞旋高速电机科技有限公司 | A kind of magnetic suspension high speed motor with novel air-cooled structure |
-
2017
- 2017-10-17 CN CN201710964433.2A patent/CN107742935A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4935654A (en) * | 1987-11-27 | 1990-06-19 | Asea Brown Boveri Aktiengesellschaft | Axial magnet bearing |
| CN201629634U (en) * | 2010-01-19 | 2010-11-10 | 天津神川机电有限公司 | Vibration-resistant variable-frequency speed regulating motor with forced cooling system |
| CN103004062A (en) * | 2010-07-28 | 2013-03-27 | 三菱电机株式会社 | Totally-enclosed fan-cooled motor |
| CN104901468A (en) * | 2014-03-05 | 2015-09-09 | 泰州市华源电机有限公司 | Internally air-cooled variable-frequency motor |
| CN204013074U (en) * | 2014-08-08 | 2014-12-10 | 南车株洲电机有限公司 | Totally-enclosed machine and bearing ventilation cooling system thereof |
| CN106300803A (en) * | 2015-05-12 | 2017-01-04 | 江苏华源防爆电机有限公司 | A kind of internally air-cooled formula frequency conversion motor |
| CN205725332U (en) * | 2016-04-13 | 2016-11-23 | Abb技术有限公司 | Motor bearings cooling structure and motor |
| CN106300778A (en) * | 2016-08-02 | 2017-01-04 | 天津飞旋科技研发有限公司 | The pure air-cooled heat dissipation structure of magnetic suspension motor of impeller one |
| CN206490547U (en) * | 2017-02-20 | 2017-09-12 | 深圳市品成电机有限公司 | A kind of micromachine of perfect heat-dissipating |
| CN207518404U (en) * | 2017-10-17 | 2018-06-19 | 天津飞旋高速电机科技有限公司 | A kind of magnetic suspension high speed motor with novel air-cooled structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713847A (en) * | 2019-01-07 | 2019-05-03 | 天津飞旋高速电机科技有限公司 | A kind of magnetic-suspension high-speed magneto and cooling means with air water cooling structure |
| CN118074409A (en) * | 2024-04-17 | 2024-05-24 | 珠海格力电器股份有限公司 | Motor with a motor housing |
| CN118074409B (en) * | 2024-04-17 | 2024-07-23 | 珠海格力电器股份有限公司 | Motor with a motor housing |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 34 Muning Road, Binhai New District, Tianjin City, 300457 Applicant after: TIANJIN EMAGING HIGH SPEED MOTOR TECHNOLOGY Co.,Ltd. Applicant after: Tianjin Feixuan Technology Co.,Ltd. Address before: No. 34 Muning Road, Binhai New District, Tianjin City, 300457 Applicant before: TIANJIN EMAGING HIGH SPEED MOTOR TECHNOLOGY Co.,Ltd. Applicant before: TIANJIN EMAGING TECHNOLOGY Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180227 |