CN104242519B - Motor rotor cooling structure - Google Patents
Motor rotor cooling structure Download PDFInfo
- Publication number
- CN104242519B CN104242519B CN201310580831.6A CN201310580831A CN104242519B CN 104242519 B CN104242519 B CN 104242519B CN 201310580831 A CN201310580831 A CN 201310580831A CN 104242519 B CN104242519 B CN 104242519B
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- Prior art keywords
- heat pipe
- blind hole
- heat
- rotor
- inwall
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- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001075561 Fioria Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a motor rotor cooling structure. The motor rotor cooling structure comprises a rotor and a heat conducting pipe, a seal is arranged at one end of the heat conducting pipe, the other end of the heat conducting pipe is open, the end, located in a motor casing, of a motor shaft on the rotor is provided with a coaxial blind hole, the open end of the heat conducting pipe is fixedly connected to the open end of the blind hole, the inner diameter of the heat conducting pipe gradually increases from the end with the seal to the open end, and a sintered layer is arranged on the inner wall of the blind hole of the motor shaft. According to the motor rotor cooling structure, the influence on the cooling efficiency of the heat conducting pipe caused by high-speed rotation of the rotor can be effectively avoided so that a motor can have a reliable cooling effect, and meanwhile the motor can be conveniently manufactured.
Description
Technical field
The present invention relates to technical field of motors, more particularly, to a kind of rotor cooling structure.
Background technology
Motor can operationally produce heat, be generally all by housing radiate, or on rotor install blade so as to
By in the air suction casing of hull outside, and then the purpose of cooling is reached, but the above-mentioned type of cooling has cooling effectiveness
The big problem of low and noise.With the progress of technology, people on motor by arranging the heat pipe that can quickly conduct heat
To realize the cooling of motor.It is for example, a kind of disclosed in Chinese patent literature " with the motor of heat pipe type of cooling cooling ",
Publication No. is CN102751803A, and motor heat pipe directly by the motor feels hot, go out to cool down electricity by heat transfer that source sends
Machine, including the heat pipe cooling group that stator, rotor, armature winding and two sets are independent, can independently use, and also can be combined makes
With.The type of cooling can solve current conventional motors development restriction, reach the purpose of structure simplification and reduces cost.Heat pipe
Essential structure include the body of vacuum, working media is provided with body, the tube wall of heat pipe is provided with capillary structure,
One end of heat pipe is heat absorbing end, and the other end is radiating end, and when the heat absorbing end of heat pipe contacts with thermal source, the heat of thermal source makes
Working media in body becomes gas and to radiating end flowing, liquid is become after radiating end sheds heat, then by hair
The effect of thin tissue flow back into heat absorbing end automatically.For example, it is a kind of it is disclosed in Chinese patent literature " the smooth zero draft of end face
Heat pipe structure ", notification number is the upper end and lower end that CN2585162Y, wherein top cover and bottom are respectively arranged at hollow cylinder
Portion, the upper surface of this top cover is formed with recess, and recess and is formed with perforation, fills the perforation that pipe is arranged in top cover, this bottom
Lower surface is plane, and has capillary structure to be attached at the inner edge wall of hollow cylinder, and flexible supporter is placed in capillary structure
Side.Although the characteristics of heat pipe has heat conduction velocity fast, there are the following problems to use it for the cooling of rotor：
Due to motor, operationally rotor is in high-speed rotation state, therefore, the heat pipe being arranged on rotor also can synchronously at a high speed
Rotate, now becoming the working media of liquid in heat pipe after radiating can be subject to the effect of a great centrifugal force so as to adhere to
On the inwall of heat pipe, guide function of the capillary structure in heat pipe to working media is greatly reduced, make radiating end
Working media cannot quickly return to heat absorbing end, so as to greatly reduce the heat conduction efficiency of heat pipe and the cooling of rotor
Effect.
The content of the invention
The present invention is that the working media in order to exist when solving and cooling down rotor with heat pipe cannot quickly return to inhale
A kind of hot junction, the problem of the cooling effect difference of rotor, there is provided cooling structure of the rotor of employing heat pipe, can be effective
Avoid impact of the rotor high-speed rotation to heat pipe cooling effectiveness.
To achieve these goals, the present invention is employed the following technical solutions：A kind of rotor cooling structure, including rotor
And heat pipe, described heat pipe one end is provided with sealing, and the other end is open-minded, and the motor shaft on rotor is located at the one end in electric machine casing
Coaxial blind hole is provided with, one end that heat pipe is opened is fixed in the opening of blind hole, and the internal diameter of the heat pipe is from sealing one end
Incrementally increase to one end is opened.
In the prior art, heat pipe is directly plugged in a heat pipe installing blind of the workpiece for needing cooling
, limited by installing blind machining accuracy, it is difficult to be brought into close contact well between heat pipe and installing blind, so as to affect
The heat transfer efficiency of heat pipe.The present invention directly arranges blind hole on motor shaft, and heat pipe then one end is open-minded, and heat pipe is opened
Logical one end is fixed in the opening of blind hole, and so, the blind hole of motor shaft becomes the extension of heat pipe, so as to form a spelling
Connect the heat pipe of formula.Because blind hole with heat pipe without the need for coordinating, therefore the requirement on machining accuracy to blind hole can be substantially reduced, so as to
Be conducive to its processing and manufacturing.And the heat of motor shaft evaporates directly the liquid working media of blind hole inwall, can be significantly
Improve heat conduction efficiency and cooling effect.Particularly, existing heat pipe is cylindrical tube, thus is led in rotor high-speed rotation
Working media in heat pipe is easily consumingly attached on heat conduction inside pipe wall by the effect of centrifugal force, and then reduces radiating end
Working media is back to the speed of heat absorbing end.The heat conduction bore of the present invention is incrementally increased from sealing one end to one end is opened,
That is, the inwall of heat pipe is outward-dipping to one end is opened from sealing one end, so, adsorbs the liquid on inclined inwall
Working media can be subject to the counteracting force of inclined inwall, the counteracting force to form dividing towards motor shaft blind hole one end
Power, so as to push the work forward, medium flows back towards blind hole one end.And the rotating speed of rotor is higher, and centrifugal force is bigger, correspondingly inwall
Counteracting force it is also bigger, so component of the counteracting force in blind hole one end is also bigger, so as to effectively drive working media
Backflow, efficiently solve the problem that the cooling effectiveness of rotor heat pipe in high-speed rotation is reduced, and then improve rotor
Cooling effect.
Preferably, the opening of the blind hole is provided with counterbore, heat pipe is fixed in counterbore, and the internal diameter of blind hole is by heat conduction
The end face that pipe is opened to blind hole bottom surface incrementally increases, so as to the smooth connection of the inwall of heat pipe.So, the working media of liquid
Can successfully from heat conduction inside pipe wall stream to blind hole inwall.
Preferably, the blind hole inwall of the motor shaft is provided with sinter layer, sinter layer can be realized by sintering process, due to
Sinter layer inside can form uniform densely covered tiny holes, thus it has good capillarity, so, is flowed back by heat pipe
Working media in blind hole can quickly and evenly adsorb on the inwall of whole blind hole under the capillarity of sinter layer, so as to
" dry combustion method " phenomenon for avoiding blind hole inwall local from adsorbing without working media and formed, and then heat absorption efficiency can be effectively improved.It is special
It is not that the sinter layer that is sintered on inwall has and is easily installed manufacture and the high non-damageable advantage of intensity.
Preferably, the inwall of the motor shaft blind hole is provided with some axially aligned heat absorption circles, the heat absorption circle bag
Include the circle body that is connected with blind hole inwall and from circle body to away from the axially extending some elastic slip in heat pipe side, it is described blind
The inwall in hole and heat absorption circle surface are provided with sinter layer.
The heat of motor shaft can be transmitted on heat absorption circle, because inwall and the heat absorption circle surface of blind hole have sintering simultaneously
Layer, thus co-absorbed working media and working media can be evaporated, so as to significantly increase the heat absorption efficiency of heat absorbing end.Especially
It is heat absorption circle comb shape in a ring, in rotor high-speed rotation, the elastic slip of the circle that absorbs heat is outside under the influence of centrifugal force
Strut and be close to the inwall of blind hole, that is to say, that elastic slip keeps identical angle of inclination with blind hole inwall, it can thus be ensured that
Working media energy quick backflow in rotor high-speed rotation on heat absorption circle.
Preferably, the elastic slip is equally spaced on the circumferencial direction of circle body, the bullet of two neighboring heat absorption circle
Property slip misplace in a circumferential direction arrangement, so as to avoid because of the superposed shadow together of elastic slip of adjacent heat absorption circle
Ring the evaporation rate of working media.
Preferably, the outer surface in heat pipe is provided with vertically some radiating fins for radially extending, so as to improve
The radiating effect of heat pipe, particularly, the radiating fin for radially extending can substantially reduce air resistance coefficient in high-speed rotation and
Noise.
Preferably, the radiating fin includes the heat dissipating ring affixed with heat pipe, the outward flange of heat dissipating ring is provided with trapezoidal
Tooth.
Because the temperature of radiating fin is gradually reduced from centre to edge, and trapezoidal toothing can make the radiating of radiating fin
Area is correspondingly gradually reduced from centre to edge, so, can be significantly decreased while radiating fin radiating efficiency is guaranteed
The weight of radiating fin, had both reduced material cost, was conducive to making motor lightweight again.
Preferably, being provided with radiator fan in the junction of heat pipe and motor shaft, the radiator fan includes being set in
The fastening hoop of heat pipe and motor shaft connection place and the fan blade being evenly provided on adapter sleeve periphery.Radiation air
On the one hand fan is conducive to the radiating of heat pipe, while being conducive to improving the bonding strength of heat pipe and motor shaft.
Therefore, the present invention has the advantages that：Rotor high-speed rotation can be prevented effectively to heat pipe cooling effectiveness
Affect, make motor that there is reliable cooling effect, while facilitating its processing and manufacturing.
Description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the partial sectional view of motor shaft.
Fig. 3 is the structural representation of heat absorption circle.
Fig. 4 is the structural representation of radiating fin.
In figure：1st, rotor 11, motor shaft 12, blind hole 13, counterbore 2, heat pipe 23, sinter layer 24, envelope
Mouth 3, heat absorption circle 31, circle body 32, elastic slip 6, radiating fin 61, heat dissipating ring 62, stepped tooth 63, separation
Ring 7, radiator fan 71, fastening hoop 72, fan blade
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described with specific embodiment.
As shown in figure 1, a kind of rotor cooling structure, for the cooling to rotor, including rotor 1, heat pipe
2, the motor shaft 11 of output torque is used on rotor coaxial blind hole 12 is set in the one end in electric machine casing, heat pipe
One end is provided for the sealing 24 for encapsulating, and the other end is then open-minded, and one end that heat pipe is opened is fixed on the opening of blind hole.
So motor shaft becomes the extension of heat pipe, so as to constitute a spliced heat pipe, it is, of course, understood that inciting somebody to action
After heat pipe is secured on motor shaft, it would be desirable to corresponding working media is irrigated in heat pipe, sealing is then used by heat conduction
The seal of tube.Because heat pipe has very high heat transfer rate, therefore the heat that can operationally produce rotor passes through heat pipe
Distribute.In order that working media of the rotor in high-speed rotation in heat pipe successfully can be back to heat absorption from radiating end
End, the internal diameter of heat pipe is incrementally increased from sealing one end to one end is opened, that is to say, that the inwall of heat pipe from sealing one end to
Open one end outward-dipping, so, when motor works, adsorbing the working media of liquid on inclined inwall can be inclined
Inwall counteracting force, the centrifugal force that the counteracting force is subject to working media can form closing towards motor shaft blind hole
Power, so as to push the work forward, medium flows back along the inclined inwall of heat pipe towards blind hole.And the rotating speed of rotor is higher, and centrifugal force is got over
Greatly, correspondingly the counteracting force of inwall is also bigger, and making a concerted effort for the medium that so pushes the work forward is also bigger, so as to effectively drive work
Make the backflow of medium, solving the problems, such as the cooling effectiveness of rotor heat pipe in high-speed rotation reduces, and then improves rotor
Cooling effect.
Affixed with blind hole for the ease of heat pipe, we can arrange a counterbore 13, heat pipe in the opening of blind hole
Open one end and can be threaded connection or weld etc. mode and be fixed in counterbore, so as to limit the depth of the embedded blind hole of heat pipe
Degree.Certainly, be necessary to ensure that sealing in the junction of heat pipe and counterbore, in case in heat pipe working media leakage.As one
Preferred version is planted, the internal diameter of blind hole is incrementally increased by the end face that heat pipe is opened to blind hole bottom surface, so as to the inwall with heat pipe
Smooth connection.So, the working media of liquid can successfully from heat conduction inside pipe wall stream to blind hole inwall.
Additionally, we can also sinter the sinter layer 23 of one layer of anaerobic copper powder on the blind hole inwall of motor shaft, in sinter layer
The uniform densely covered tiny holes that portion is formed have good capillarity, so, the work being back to by heat pipe in blind hole
Medium can equably adsorb on the inwall of whole blind hole, so as to the heat of motor shaft is quick under the capillarity of sinter layer
Pass to the working media in blind hole and working media is evaporated rapidly, and then heat absorption efficiency can be effectively improved.
In order to further enhance the efficiency of working media heat absorption evaporation, as shown in Fig. 2 we also can first in the blind of motor shaft
Some axially aligned heat absorption circles 3 are set on the inwall of hole.The overall comb shape in a ring of heat absorption circle, concrete structure such as Fig. 3 institutes
Show, it includes the circle body 31 being connected with blind hole inwall and from circle body to away from the axially extending some flexure strips in heat pipe side
Bar 32, after the circle that absorbs heat is fixed to blind hole inwall, in blind hole inwall and heat absorption circle surface the sintering of one layer of anaerobic copper powder is sintered
Layer.So, the heat of motor shaft can be transmitted on heat absorption circle simultaneously, so that the inwall of blind hole can simultaneously by work with heat absorption circle
Medium evaporates, and then significantly increases the heat absorption efficiency of working media.It should be noted that heat absorption circle can using rustless steel or its
There is Thermal conductivity and the material of elasticity to make for it, and thickness is can be controlled between 0.01 millimeter -0.02 millimeter, so,
Heat absorption circle had both had good heat-conductive characteristic, at the same with good elasticity, in rotor high-speed rotation, the elasticity of the circle that absorbs heat
Slip is outwards strutted under the influence of centrifugal force and is close to the inwall of blind hole naturally, that is to say, that elastic slip and blind hole inwall
Identical angle of inclination is kept, it can thus be ensured that the working media energy quick backflow in rotor high-speed rotation on heat absorption circle.
Further, heat absorption circle can in front and back overlap arrangement in the axial direction of blind hole, so as to more heat absorption circle can be arranged, when
So, now elastic slip preferably should be equally spaced on the circumferencial direction of circle body, and two adjacent in the axial direction suctions
The elastic slip of gas ket misplaces in a circumferential direction arrangement, so as to can avoid because the elastic slip of adjacent heat absorption circle it is superposed
The evaporation rate of working media is affected together.
Finally, we can also the outer surface of heat pipe it is axially spaced some radiating fins 6 for radially extending are set.
As shown in figure 4, radiating fin includes the heat dissipating ring 61 affixed with radiating end, while the outward flange in heat dissipating ring arranges stepped tooth
62.Because radiating fin is located normal in the plane of heat pipe axial direction, thus radiating fin will not be to sky in high-speed rotation
Gas forms impetus, so as to substantially reduce air resistance coefficient and noise in high-speed rotation, and radiating fin two sides
Air then forms relative high velocity air, can improve the radiating effect of radiating fin.In addition, can arrange between radiating fin point
Spacer ring 63, the spacing that both can be accurately positioned between radiating fin is conducive to radiating fin to be securely held on heat pipe again, and
Increase the heat transfer area between heat pipe and radiating fin, improve radiating effect.And stepped tooth can then not reduce radiating effect
The weight of radiating fin, material-saving are significantly decreased on the premise of fruit, and reduces rotary inertia when rotor is rotated.Certainly,
As shown in figure 1, we can also arrange a radiator fan 7 in the junction of heat pipe and motor shaft, radiator fan includes being arranged
In the fastening hoop 71 and the fan leaf that is evenly provided on fastening hoop periphery of heat pipe Yu the junction of motor shaft
Piece 72, radiator fan can use aluminium alloy casting.So, on the one hand radiator fan is conducive to the radiating of heat pipe, while having
Beneficial to the bonding strength for improving heat pipe and motor shaft.Certainly, for the ease of the installation of radiator fan, motor shaft connects with heat pipe
Connect one end lateral surface and heat pipe opens one end lateral surface and can arrange the step of a diminution, so as in heat pipe and motor
The junction of axle forms an annular groove, the fastening hoop of radiator fan then just screens in the annular groove.It should be noted that tight
Gu cuff should be double splicing construction, so, radiator fan can first be split up into two halves, then be fastened on annular groove, by spiral shell
The connected modes such as nail connect as one fastening hoop, so as to form complete radiator fan.
Claims (5)
1. a kind of rotor cooling structure, including rotor and heat pipe, is characterized in that, described heat pipe one end is provided with sealing,
The other end is open-minded, and one end that the motor shaft on rotor is located in electric machine casing is provided with coaxial blind hole, one end that heat pipe is opened
It is fixed in the opening of blind hole, the internal diameter of the heat pipe is incrementally increased from sealing one end to one end is opened, the blind hole is opened
Mouth end is provided with counterbore, and heat pipe is fixed in counterbore, and the internal diameter of blind hole is progressively increased by the end face that heat pipe is opened to blind hole bottom surface
Greatly, so as to be provided with some axially aligned heat absorption circles with the inwall of the smooth connection of the inwall of heat pipe, the motor shaft blind hole,
The heat absorption circle includes the circle body being connected with blind hole inwall and from circle body to away from the axially extending some bullets in heat pipe side
Property slip, the inwall of the blind hole and heat absorption circle surface are provided with sinter layer.
2. a kind of rotor cooling structure according to claim 1, is characterized in that, circle of the elastic slip in circle body
It is equally spaced in circumferential direction, the elastic slip of two neighboring heat absorption circle misplaces in a circumferential direction arrangement.
3. a kind of rotor cooling structure according to claim 1 and 2, is characterized in that, on the outer surface edge of heat pipe
It is axially arranged with some radiating fins for radially extending.
4. a kind of rotor cooling structure according to claim 3, is characterized in that, the radiating fin includes and heat conduction
The affixed heat dissipating ring of pipe, the outward flange of heat dissipating ring is provided with stepped tooth.
5. a kind of rotor cooling structure according to claim 1 and 2, is characterized in that, in heat pipe and motor shaft
Junction is provided with radiator fan, and the radiator fan is including the fastening hoop for being set in heat pipe and motor shaft connection place and
The fan blade being arranged on evenly on adapter sleeve periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310580831.6A CN104242519B (en) | 2013-06-18 | 2013-11-18 | Motor rotor cooling structure |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320378625 | 2013-06-18 | ||
| CN2013203786252 | 2013-06-18 | ||
| CN201320378625.2 | 2013-06-18 | ||
| CN201310580831.6A CN104242519B (en) | 2013-06-18 | 2013-11-18 | Motor rotor cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104242519A CN104242519A (en) | 2014-12-24 |
| CN104242519B true CN104242519B (en) | 2017-05-17 |
Family
ID=52230084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310580831.6A Active CN104242519B (en) | 2013-06-18 | 2013-11-18 | Motor rotor cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242519B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI572125B (en) * | 2015-09-23 | 2017-02-21 | Rotor heat dissipation structure of inner rotor motor | |
| DE102017213227B4 (en) | 2017-08-01 | 2024-12-05 | Audi Ag | rotor for an electric machine |
| CN118008755B (en) * | 2024-02-19 | 2024-09-06 | 蚌埠高科能源装备有限公司 | Surface cooler for compressor |
| CN118487398A (en) * | 2024-05-23 | 2024-08-13 | 郑州德盛祥电机制造有限公司 | High-speed permanent magnet motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138841A (en) * | 1981-02-18 | 1982-08-27 | Hitachi Ltd | Rotary electric machine |
| EP0152785A1 (en) * | 1984-02-15 | 1985-08-28 | Kernforschungszentrum Karlsruhe Gmbh | Rotating machine with heat pipe cooling |
| SE528580C2 (en) * | 2005-05-25 | 2006-12-19 | Abb Ab | Rotating electrical machine incorporates a motor shaft which contains a heat tube and applies to both low and high voltage machines |
| CN202435199U (en) * | 2011-12-31 | 2012-09-12 | 大连熵立得传热技术有限公司 | Heat pipe module heat-dissipation type oil-bath electric motor |
| CN203596678U (en) * | 2013-11-18 | 2014-05-14 | 於贻鹏 | Motor rotor cooling structure |
-
2013
- 2013-11-18 CN CN201310580831.6A patent/CN104242519B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138841A (en) * | 1981-02-18 | 1982-08-27 | Hitachi Ltd | Rotary electric machine |
| EP0152785A1 (en) * | 1984-02-15 | 1985-08-28 | Kernforschungszentrum Karlsruhe Gmbh | Rotating machine with heat pipe cooling |
| SE528580C2 (en) * | 2005-05-25 | 2006-12-19 | Abb Ab | Rotating electrical machine incorporates a motor shaft which contains a heat tube and applies to both low and high voltage machines |
| CN202435199U (en) * | 2011-12-31 | 2012-09-12 | 大连熵立得传热技术有限公司 | Heat pipe module heat-dissipation type oil-bath electric motor |
| CN203596678U (en) * | 2013-11-18 | 2014-05-14 | 於贻鹏 | Motor rotor cooling structure |
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| Publication number | Publication date |
|---|---|
| CN104242519A (en) | 2014-12-24 |
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Address after: Luqiao District No. 228 South Road in Taizhou City, Zhejiang province 318050 Applicant after: Wu Yipeng Address before: Luqiao District No. 228 South Road in Taizhou City, Zhejiang province 318500 Applicant before: Wu Yipeng |
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