CN108667214A - Motor and machine cavity method for exhausting - Google Patents
Motor and machine cavity method for exhausting Download PDFInfo
- Publication number
- CN108667214A CN108667214A CN201810923497.2A CN201810923497A CN108667214A CN 108667214 A CN108667214 A CN 108667214A CN 201810923497 A CN201810923497 A CN 201810923497A CN 108667214 A CN108667214 A CN 108667214A
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- China
- Prior art keywords
- motor
- shell
- exhaust
- turbine
- output shaft
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- 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)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The present invention provides a kind of motor, including：Shell；Motor stator in the shell；Motor output shaft in the shell；And exhaust apparatus, the exhaust apparatus are connect with the shell, and be configured to from inside to outside be vented from the shell.According to embodiment of the present invention, on the output shaft of motor, motor cavity body is pumped into negative pressure state by installation turbine apparatus when motor rotates, motor speed is higher, motor air pressure inside is lower, and vacuum degree is higher, and the frictional resistance of rotor and air is with regard to smaller, so as to effectively improving motor speed and the bigger rotor of diameter may be used, increasing low speed torque while improving power of motor density and being conducive to the design of heavy-duty motor.
Description
Technical field
The present invention relates generally to technical field of motors, more particularly, to exhaust apparatus motor and machine cavity be vented
Method.
Background technology
In existing motor, with the raising of motor speed, rotor is formed by resistance with surrounding air friction also can phase
It increases with answering, therefore the continuous elevated band of rotating speed is carried out frictional resistance and continued to increase.In order to reduce frictional resistance, in high-speed electric expreess locomotive,
Can only windage resistance be reduced using the rotor of minor diameter, torsion when torsion, especially low speed to limit motor
Power.
The content of background technology part is only the technology that inventor is known, not the existing skill of natural representative this field
Art.
Invention content
For the prior art there are one or more of problem, the present invention provides a kind of motor, including：Shell；It is located at
Motor stator in the shell and rotor；Motor output shaft in the shell；And exhaust apparatus, the exhaust
Device is connect with the shell, and is configured to from inside to outside be vented from the shell.
According to an aspect of the present invention, include and the exhaust with exhaust outlet, the exhaust apparatus on the shell
The air exhauster of mouth connection.
According to an aspect of the present invention, there is exhaust outlet, the exhaust apparatus includes one or more groups of on the shell
Turbine rotor blade, the turbine rotor blade are located in the shell and on the motor output shaft, so as to
As the output shaft rotates, the exhaust outlet is preferably placed at the downstream of the turbine rotor blade.
According to an aspect of the present invention, the exhaust apparatus includes multigroup turbine rotor blade, is turned in adjacent turbine
Turborotor is provided between blades.
According to an aspect of the present invention, the turborotor is fixed on Cover For A Turbine, and the Cover For A Turbine sealing is solid
Determine on the housing.
According to an aspect of the present invention, further include turbine exhaust chamber antetheca, the turbine exhaust chamber antetheca is mounted on institute
It states between the downstream of turbine rotor blade and the shell 5 and keeps sealing with the shell 5.
According to an aspect of the present invention, filter and/or check valve are provided on the exhaust outlet.
According to an aspect of the present invention, the shaft end that goes out of the motor output shaft uses airtight construction.
According to an aspect of the present invention, there are multiple exhaust outlets on the shell.
The present invention also provides a kind of methods to motor exhaust gas inside, including：Start motor；Pass through the row on electric machine casing
Gas port, to electric machine casing external exhaust gas.
According to an aspect of the present invention, described to include to electric machine casing external exhaust gas：By air exhauster from the exhaust
Mouthful to electric machine casing external exhaust gas.
According to an aspect of the present invention, described to include to electric machine casing external exhaust gas：By being mounted on motor output shaft
On one or more groups of turbine rotor blades, from the exhaust outlet to electric machine casing external exhaust gas.
For the present invention on the output shaft of motor, motor cavity body is pumped into negative pressure by installation turbine apparatus when motor rotates
State, motor speed is higher, and motor air pressure inside is lower, and vacuum degree is higher, the frictional resistance of rotor and air with regard to smaller, to
The bigger rotor of diameter may be used, increase low speed torque and be conducive to the design of heavy-duty motor.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the sectional view of motor according to an embodiment of the invention；
Fig. 2 is the front view of motor according to an embodiment of the invention；
Fig. 3 is the side view of motor according to an embodiment of the invention；With
Fig. 4 is the schematic diagram of motor in accordance with another embodiment of the present invention.
Specific implementation mode
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that
Like that, without departing from the spirit or scope of the present invention, described embodiment can be changed by various different modes.
Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implies relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
The feature of one ", " second " can explicitly or implicitly include one or more feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is the sectional view of motor according to an embodiment of the invention；Fig. 2 is according to one embodiment of present invention
Motor front view；Fig. 3 is the side view of motor according to an embodiment of the invention.
As shown in Figure 1, motor 100 according to the first embodiment of the invention is shown.As shown in Figure 1, motor
100 include：Shell 9；Motor stator and winding 3, are fixed in the shell 9, generate rotating excitation field when energized；Electricity
Machine rotor 8 is rotatably arranged in the shell 9, when the rotating excitation field by motor stator and the generation of winding 3 acts on,
The pole rotor 8 rotates；Motor output shaft 17 is fixed together with the rotor 8, so as to the motor
Rotor 8 rotates.According to the present invention, the motor 100 further includes exhaust apparatus, and the exhaust apparatus is connect with the shell, if
It sets in the shell outside either shell or on shell, and is configured to from inside to outside be vented from the shell, to described
Negative pressure is generated in shell, forms certain vacuum degree.
As shown in Figure 1, one end of motor 100 has rear end cap 5, one end for closing shell 9, and for example for passing through
Bearing 6 supports the rear end 7 of the motor output shaft 17 afterwards, to by electric motor back shaft hold 6 and output shaft rear end 7 be sealed in rear end
Inside lid 5, using rear end cap 5 so that the inner chamber body of motor is sealed with extraneous.The other end of motor 100 has drive end bearing bracket 16, uses
In the other end of closure 9, while the front end 15 of the motor output shaft 17 is for example supported by fore bearing 14.In Fig. 1
Shown in shell 9, drive end bearing bracket 16, rear end cap 7 be individual component, it is understood by one of ordinary skill in the art that one in them
It can also be formed as whole component a bit, such as shell 9 and rear end cap 7 can be with overall constructions.These are all in the protection of the present invention
In range.The drive end bearing bracket 16 and/or rear end cap 5 can be a parts for the shell 9.
The motor 100 is, for example, single output spindle motor, i.e., only there is output shaft in one end.It is with single output shaft single machine below
Example illustrates.It is understood by one of ordinary skill in the art that exporting spindle motor the present invention is not limited to single, may be equally applied to double
Export spindle motor.For example, if motor is double output shaft, that is, rear output shaft is carried, then needed in the inner end of rear output shaft or outer
End installs sealing device additional, ensures that motor cavity body keeps sealing between rear output shaft and rear bearing 6, while bearing after keeping
6 itself seal, and the sealing after holding between bearing 6 and motor housing 9.
Note that it will be appreciated by those skilled in the art that " vacuum degree " mentioned in the present invention be not meant to it is absolute true
Sky only shows to make air pressure in shell less than external atmospheric pressure by exhaust apparatus, or when not working less than it
Enclosure interior air pressure.
Exhaust apparatus is described in detail below with reference to Fig. 1.
As shown in Figure 1, according to one embodiment of present invention, the exhaust apparatus includes one or more groups of turbine rotor leaves
Piece 10, the turbine rotor blade 10 are located in the shell, such as between rotor 8 and motor front end cover 16, and pacify
On the motor output shaft 17, so as to be rotated with the output shaft 17.The diameter of turbine rotor blade 10 according to
The design speed of motor and the power of motor do corresponding adjustment.Exhaust outlet 13 is provided on the shell 9.The exhaust outlet 13
Motor cavity is connected to outside.The exhaust outlet 13 is preferably placed at the downstream of the turbine rotor blade, by right side electricity in Fig. 1
The air in chamber where machine rotor is discharged to the left.Those skilled in the art are it is contemplated that turbine rotor blade 10 also may be used
To be mounted on the rotor 8, or integrate with rotor 8.Such as rotor 8 can make hollow knot
Structure, hollow space can be used to install or integrate turbine rotor blade 10.These are all within the scope of the present invention.Institute in Fig. 1
The exhaust outlet 13 shown is arranged on the side wall of the shell 9.It will be understood by those skilled in the art that exhaust outlet 13 can also be arranged
On the drive end bearing bracket 16 of the shell 9.
According to one embodiment of present invention, the exhaust apparatus includes multigroup turbine rotor blade 10, in adjacent whirlpool
It is provided with turborotor 11 between rotor blades 10, forms multistage turbine air extraction structure.The series of turbine air extraction structure
It can be determined according to factors such as design of electrical motor rotating speed and root diameters, root diameter increases, and the vacuum degree needed is high, can increase pumping
The series of mechanism of qi；Design of electrical motor rotating speed is high, and turbine efficiency increases, and can suitably reduce series.It is three-stage turbine knot shown in Fig. 1
Structure.Certainly, in the case where only including one group of turbine rotor blade 10, can not also be arranged in the downstream of turbine rotor blade 10
Turborotor 11.Turborotor 11 is set between turbine rotor blades 10 at different levels, can will come from upstream turbine
The direction of the air of rotor blade 10 is corrected, and is transported to downstream turbine rotor blade 10, improves efficiency.The Cover For A Turbine
2 sealings are fixed on the shell 9, such as can be fixed together with motor housing 9 by mechanical structure and be kept sealing.Institute
Stating turbine rotor washer 18 can be fixed on shell 9, alternatively, can be pressed abd fixed on Cover For A Turbine 2.The turbine rotor washer
Between 18 and shell 9, sealing is kept between turbine rotor washer 18 and Cover For A Turbine 2 and between Cover For A Turbine 2 and shell 9.
As shown in Figure 1, between the Cover For A Turbine 2 of motor 100, it is provided with turbine rotor washer 18, for being turbine rotor leaf
Piece 10 provides accurate working space.
According to one embodiment of present invention, between turbine rotor blade group 10 and motor front end cover 16, the motor
100 further include turbine exhaust chamber antetheca 1, and the turbine exhaust chamber antetheca 1 is mounted on downstream and the institute of the turbine rotor blade
Between stating drive end bearing bracket 16, and keep sealing with the shell 9.
According to one embodiment of present invention, filter and/or check valve 12 are provided on the exhaust outlet 13.Filter
For example, multistage filter, for filtering air in dust, sundries and moisture so that enter motor cavity body air protect
It holds clean and dry.Check valve can be used for realizing similar purposes and function.
The work of motor 100 shown in FIG. 1 is described below.
(for example, being to rotate clockwise from output shaft forward observation), output shaft when motor 100 is rotated according to direction initialization
It drives the turbine rotor blade 10 installed thereon to rotate, motor cavity body air downstream is conveyed and extracted out, exhaust outlet is passed through
13 and filter and/or check valve 12 motor cavity body is discharged so that 8 surrounding of motor cavity body rotor keeps negative pressure,
To reduce air drag when rotor rotation.When motor 100 stops operating, outside air can be filtered out by filter
Dust, sundries and moisture etc., by exhaust outlet 13 enter motor inner chamber body, keep motor when not working external and internal pressure one
It causes.
According to one embodiment of present invention, an exhaust outlet 13 can be only set on shell 9.Start in motor 100
When rotation, turbine ramps up, and the air of peritrochanteric cavity is gradually extracted out, is discharged by exhaust outlet, peritrochanteric cavity
Volume is simultaneously little, air capacity also very little a, it is only necessary to gas vent.When motor reaches working speed, peritrochanteric
Vacuum degree also reach and maintain corresponding value, at this moment, actually there is no air to pass through gas vent.When motor accelerates, whirlpool
Rotor blades also accelerate, and extract more air out, are discharged by gas vent, until motor speed is constant；When decelerating through motor, turbine
Rotor blade also slows down simultaneously, and pumping efficiency reduces, and partial air enters rotor cavity from gas vent, until motor speed
It is constant.Those skilled in the art will also appreciate that motor of the invention can also include multiple exhaust outlets 13, such as along shell
9 periphery is evenly distributed, for gas to be equably discharged.These are all within the scope of the present invention.
By turbine apparent advantage can be brought to take out negative pressure.
In conventional motors, rotating speed generally only has thousands of turns, and per minute ten thousand turns or more of motor is just considered as pot motor.
Under this rotating speed, the frictional force of rotor and air is not enough to cause very serious influence to motor performance.
And modern New-type electric machine, rotating speed can design very high, reach ten tens of thousands of turns of even hundreds of thousands and turn.It improves and turns
The advantage of speed is that the power density of motor can be done very big, be had in fields such as aerospace, precision machinery, robots
Extensive purposes.With the raising of motor speed, the influence of the frictional resistance of rotor and air to motor performance also can
Gradually increase, the linear velocity of rotor outer causes tremendous influence even close to velocity of sound to motor.The side being evacuated using turbine
Case can allow rotor to be rotated in very high vacuum environment, substantially reduce windage resistance, improve motor performance.
The present invention (most motors be unidirectional shaft) when for unidirectional shaft scheme, back end cover for motor with outside motor
For hull shape at sealing structure, the channel that rotor is uniquely communicated with outside motor air is turbine rotor blade group, turbine guiding
Blade group and turbine exhaust mouth.When motor works, turbine rotor blade group is suction side close to rotor side, close to turbine
For normal pressure and as motor acceleration has minor change, (turbine exhaust chamber passes through exhaust outlet and big gas phase for discharge chamber antetheca side
Logical, when motor accelerates, turbine exhaust chamber is positive pressure, and until motor constant speed, turbine exhaust cavity pressure is equal with the air pressure outside motor；
When decelerating through motor, turbine exhaust chamber is negative pressure, and until motor constant speed, turbine exhaust cavity pressure is equal with the outer air pressure of motor).Due to
Turbine exhaust chamber is communicated by turbine exhaust mouth with air, so turbine exhaust chamber does not need to use pressurized seal structure, packet
It includes motor front axle to hold, atmospheric pressure environment can be operated in, which greatly simplifies manufacturing process.
Certainly, technical scheme of the present invention is not limited to extremely high-revolving motor, is not limited to the rotating speed of motor.For tradition
Thousands of turns, up to ten thousand turns of electrode can also be applied, these are all within the scope of the present invention.
The embodiment of the present invention can also be applied to double output shaft electric machines.When double output shaft electric machines work, turbine rotor blade rotation
Turn, peritrochanteric cavity is pumped into negative pressure, since rotor internal cavity is communicated by rear bearing clearance with air outside motor, air along
The gap in gap and bearing itself between rear axle and rear bearing enters the negative pressuren zone of peritrochanteric, can lead to peritrochanteric chamber
Body air pressure rises, and influences turbine pumping effect, the negative pressure of peritrochanteric cavity can be caused to be extremely difficult to design value when serious, as
A kind of preferred scheme can overcome the problems, such as this in the rear end of output shaft using airtight construction.
Fig. 4 shows the schematic diagram of motor 200 in accordance with another embodiment of the present invention.Only describe below motor 200 with
In place of the difference of motor 100.
As shown in figure 4, not including turbine exhaust rotor inside motor 200.Turbine exhaust rotor is replaced, exhaust apparatus includes
Air exhauster 22, the air exhauster 22 are connected by pipeline 21 with the gas vent 13, so as to be discharged from the inner chamber body of motor 200
Air.
Air exhauster will be pumped into negative pressure state inside motor, at this moment air may be along between motor shaft and bearing
Gap between the gap and bearing and end cap of gap, bearing itself enters inside motor, and pumping efficiency is caused to reduce.According to one
A preferred embodiment, shown in Fig. 3 goes out shaft end, and pumping efficiency is improved using airtight construction.
It does not include turbine exhaust rotor inside motor 200 shown in Fig. 4.Those skilled in the art can also conceive,
Turbine exhaust rotor (as shown in Figure 1) inside motor 200 can be used in combination with air exhauster 22, to improve exhaust efficiency.
These are all within the scope of the present invention.
The present invention also provides a kind of methods to motor exhaust gas inside, including：
Start motor；
By the exhaust outlet on electric machine casing, from the inner cavity of motor to electric machine casing external exhaust gas.
According to one embodiment of present invention, described to include to electric machine casing external exhaust gas：By air exhauster from the row
Gas port is to electric machine casing external exhaust gas.
According to one embodiment of present invention, described to include to electric machine casing external exhaust gas：By being mounted on motor output
One or more groups of turbine rotor blades on axis, from the exhaust outlet to electric machine casing external exhaust gas.
According to the present invention, on the output shaft of motor, exhaust apparatus, such as turbine rotor blade are installed, rotated in motor
When, motor cavity body is pumped into negative pressure state, motor speed is higher, and motor air pressure inside is lower, and vacuum degree is higher, rotor and sky
The frictional resistance of gas is with regard to smaller, so as to effectively improve motor speed and the bigger rotor of diameter may be used, improves electricity
Increase low speed torque while acc power density and is conducive to the design of heavy-duty motor.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (14)
1. a kind of motor, including：
Shell；
Motor stator in the shell；
Motor output shaft in the shell；With
Exhaust apparatus, the exhaust apparatus are connect with the shell, and are configured to from inside to outside be vented from the shell.
2. motor according to claim 1, wherein have exhaust outlet on the shell, the exhaust apparatus include with it is described
The air exhauster of exhaust outlet connection.
3. motor according to claim 1, wherein have exhaust outlet on the shell, the exhaust apparatus include one group or
Multigroup turbine rotor blade, the turbine rotor blade are located in the shell and on the motor output shafts or motor
On rotor, so as to be rotated with the output shaft, the exhaust outlet is preferably placed at the downstream of the turbine rotor blade.
4. motor according to claim 3, wherein the exhaust apparatus includes multigroup turbine rotor blade, in adjacent whirlpool
Turborotor can be set between rotor blades.
5. motor according to claim 4, wherein the turborotor is fixed on Cover For A Turbine, the Cover For A Turbine is close
Sealing is fixed on the housing.
6. according to the motor described in any one of claim 3-5, the shell includes drive end bearing bracket, and the motor further includes turbine
Discharge chamber antetheca, the drive end bearing bracket closes one end of the shell and supports the motor output shaft, before the turbine exhaust chamber
Wall is mounted between the downstream and the drive end bearing bracket of the turbine rotor blade and keeps sealing with the shell.
7. according to the motor described in any one of claim 3-5, filter and/or check valve are provided on the exhaust outlet.
8. according to the motor described in any one of claim 2-5, wherein the shaft end that goes out of the motor output shaft uses airtight knot
Structure.
9. according to the motor described in any one of claim 2-5, wherein having multiple exhaust outlets on the shell.
10. motor according to claim 6, the shell further includes rear end cap, and the shell is closed in the rear end cap sealing
The other end of body, and support the motor output shaft.
11. a kind of method to motor exhaust gas inside, including：
Start motor；
By the exhaust outlet on electric machine casing, to electric machine casing external exhaust gas.
12. according to the method for claim 11, wherein described include to electric machine casing external exhaust gas：By air exhauster from institute
Exhaust outlet is stated to electric machine casing external exhaust gas.
13. according to the method for claim 11, wherein described include to electric machine casing external exhaust gas：By being mounted on motor
One or more groups of turbine rotor blades on output shaft, from the exhaust outlet to electric machine casing external exhaust gas.
14. according to the method described in any one of claim 11-13, wherein be provided on the exhaust outlet filter and/or
Check valve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923497.2A CN108667214B (en) | 2018-08-14 | 2018-08-14 | Motor and motor cavity exhaust method |
| US17/268,257 US20220045572A1 (en) | 2018-08-14 | 2019-01-25 | Motor and exhaust method for motor cavity |
| PCT/CN2019/073056 WO2020034590A1 (en) | 2018-08-14 | 2019-01-25 | Motor and exhaust method for motor cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923497.2A CN108667214B (en) | 2018-08-14 | 2018-08-14 | Motor and motor cavity exhaust method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108667214A true CN108667214A (en) | 2018-10-16 |
| CN108667214B CN108667214B (en) | 2021-06-29 |
Family
ID=63789564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810923497.2A Active CN108667214B (en) | 2018-08-14 | 2018-08-14 | Motor and motor cavity exhaust method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108667214B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061588A (en) * | 2019-05-24 | 2019-07-26 | 浙江鑫可精密机械有限公司 | The ventilating structure of driving motor and speed changer |
| WO2020034590A1 (en) * | 2018-08-14 | 2020-02-20 | 舒畅 | Motor and exhaust method for motor cavity |
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| CN206727824U (en) * | 2017-04-28 | 2017-12-08 | 佛山市顺德区艾朗电器有限公司 | A kind of exhaust fan or fan small machine |
| CN207082967U (en) * | 2017-07-27 | 2018-03-09 | 南京泓凯动力系统科技有限公司 | A kind of double-radiation function permagnetic synchronous motor |
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|---|---|---|---|---|
| CN1290420A (en) * | 1998-02-13 | 2001-04-04 | 株式会社日立制作所 | Open type electric motor for driving vehicle |
| CN2506019Y (en) * | 2000-05-21 | 2002-08-14 | 张美芬 | Flywheel AC generator |
| CN2615950Y (en) * | 2002-03-10 | 2004-05-12 | 罗德诚 | Vacuum power generator |
| CN101841211A (en) * | 2010-05-27 | 2010-09-22 | 溧阳福思宝高速机械有限公司 | High-speed motor with rotor cooling structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020034590A1 (en) * | 2018-08-14 | 2020-02-20 | 舒畅 | Motor and exhaust method for motor cavity |
| CN110061588A (en) * | 2019-05-24 | 2019-07-26 | 浙江鑫可精密机械有限公司 | The ventilating structure of driving motor and speed changer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108667214B (en) | 2021-06-29 |
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