CN106300708B - A kind of motor rotor ventilation structure for installing three channel steels - Google Patents
A kind of motor rotor ventilation structure for installing three channel steels Download PDFInfo
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- CN106300708B CN106300708B CN201610750734.0A CN201610750734A CN106300708B CN 106300708 B CN106300708 B CN 106300708B CN 201610750734 A CN201610750734 A CN 201610750734A CN 106300708 B CN106300708 B CN 106300708B
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- 239000010959 steel Substances 0.000 title claims abstract description 203
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 198
- 238000009423 ventilation Methods 0.000 title claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002826 coolant Substances 0.000 claims abstract description 6
- 210000000515 tooth Anatomy 0.000 claims description 31
- 230000004323 axial length Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000005273 aeration Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The present invention relates to a kind of motor rotor ventilation structures for installing three channel steels, mainly include Radial ventilation duct, rotor tooth, axial ventilation road, rotor core and channel steel.Rotor core is uniformly divided into several sections along axial direction, there are a fixed gaps between adjacent rotor iron core, form Radial ventilation duct, the rotor tooth of adjacent segmented rotor iron core corresponds in the axial direction, channel steel is located in Radial ventilation duct and circumferentially, and is mounted between the rotor tooth of adjacent sectional rotor core, and three I-shaped cross-section channel steels are placed between each rotor tooth of adjacent sectional rotor core, wherein two channel steels are linear type channel steels, and in addition one is streamlined channel steel；Rotor core is slotted at shaft, forms axial ventilation road, provides access for cooling medium flowing, structure of the present invention gives full play to its pectinid ability and fluid guiding role, improve motor working efficiency under the premise of guaranteeing its support strength.
Description
Technical field
The present invention relates to a kind of motor rotor ventilation structures for installing three channel steels, belong to motor ventilation technology and design system
Make field.
Background technique
Inside high power density motor, electric machine rotor iron core is segmented, and forms radial ducts, included slot between stack of lamination
Steel plays support member.At the same time, in motor rotation process, rotor ventilation channel steel can play to a certain extent
The effect of fan, and cooling medium flow behavior can be improved.China Patent No. is work shape described in 201320330289.4
Section channel steel can effectively promote intensity, but not fully consider that channel steel changes the effect of gas flowing；China Patent No. is
More replicated structures channel steels described in 201420848187.6, beat the boundary layer between the cooling gas for flowing through brokenly air duct, increase
Heat dissipation area, but the larger vortex easy to form of junction windage.Above two channel steel structure fails efficiently leading using channel steel
Fluidity energy and pectinid performance.
Summary of the invention
Technology of the invention solves the problems, such as: overcome existing motor due to rotor ventilation channel steel utilization rate it is not high caused by
The problem of ventilation effect difference proposes the aeration structure for effectively promoting rotor wind dispelling ability, makes cooling medium flowing effect inside motor
Rate is opposite to be improved, and cooling effect makes moderate progress.
Technical solution of the invention are as follows: the motor rotor ventilation structure of 3 channel steels of installation mainly includes radial ventilation
Ditch (1), rotor tooth (2), axial ventilation road (3), rotor core (4) and channel steel (5).Rotor core (4) uniformly divides along axial
At several sections, number of segment n is related with rotor axial direction length D, i.e. n=5.33 × 10-3D~4.49 × 10-3D.Adjacent rotor iron core
(4) there are a fixed gaps between, are formed Radial ventilation duct (1), the axial width L and rotor internal diameter of Radial ventilation duct (1)
R1, rotor diameter R2It is related with axial length D, i.e. L=1.19 [D+3.50 (R2-R1)]×10-3~1.67 [D+2.99 (R2-R1)]
×10-3.The rotor tooth (2) of adjacent segmented rotor iron core (4) corresponds in the axial direction, and channel steel (5) is located at Radial ventilation duct
(1) it in and circumferentially, and is mounted between the rotor tooth (2) of adjacent sectional rotor core (4), adjacent sectional rotor core
(4) three channel steels (5) are placed between each rotor tooth (2), wherein two channel steels are linear type channel steels, in addition one is stream
Line style channel steel；Rotor core (4) is slotted at shaft, is formed axial ventilation road (3), provides access for cooling medium flowing,
Wherein, axial ventilation road (3) section is designed as circle, diameter of phi and rotor internal diameter R1, rotor diameter R2It is related, i.e. Φ=
0.15(R2-R1(the R of)~0.172-R1), axial ventilation road (3) are from the shaft most nearby radial direction between rotor core (4) inner circle
Distance W=1/2 Φ, angle α=18 ° of adjacent two axial ventilation road (3) central point and rotor core (4) origin line.It is described
Take I-shaped, channel steel height L in the section of three channel steels2With rotor internal diameter R1, rotor diameter R2With axial length D
It is related, it is L2=D/840+ (R2-R1)/240~D/700+ (R2-R1)/200, the wide W of channel cross-section2With channel steel height L2It is related, be
W2=1/2L2~1/3L2, the wide W of channel steel web1With the wide W of channel cross-section2It is related, it is W1=1/2W2~1/3W2, the high L of channel steel listrium1
With channel steel height L2It is related, it is L1=0.10L2~0.12L2, bevel edge and web side angle β of the channel steel listrium close to web side set
Be calculated as 130 °~136 °, three channel steels are divided into three kinds of specifications, and one is the streamlined channel steel in I-shaped cross-section, length compared with
It is long, it is referred to " long steel "；Other two are I-shaped cross-section linear type channel steel, wherein a root long degree is shorter, are referred to " short steel ",
Another root long degree is referred between " long steel " and " short steel " with " middle steel ".Wherein, long steel width W3With its cross-sectional width W2Have
It closes, is W3=1.84W2~1.88W2, the segmental arc radius R of the streamlined channel steel in I-shaped cross-section3With channel steel height L2It is related, it is R3=
4.3L2~4.6L2, the straight length L of a segmental arc3=1.93R3。
The long steel is made of 5 segmental arcs, length and rotor internal diameter R1With rotor diameter R2It is related, it is L4=
(R2-R1)/4~(R2-R1)/3.66.Short steel length L5=(R2-R1)/10~(R2-R1)/9, middle steel length L6=(R2-R1)/5.9
~(R2-R1)/5.1.Each channel steel is installed on two rotor pinions in the air duct between, and three slots are installed on each tooth
Steel, respectively one above-mentioned long steel, steel and an above-mentioned short steel among the above.Channel steel is apart from iron core Edge Distance W4With tooth
Width L7It is related, it is W4=L7/10.At channel steel distal shaft end, distance L of the short steel away from nearest tooth edge8=L7/ 9~L7/ 6, it is long
Steel is at distal shaft end away from its nearest tooth edge distance L9With facewidth L7It is related, it is L9=2L7/ 9~L7/4.It is most short between middle steel and long steel
Spacing L10=[L7+R3-(R3 2-1/4L3 2)1/2-W2]/10, distance L between middle steel and short steel11=L7/ 6~L7/4.On the whole, long
Steel, middle steel and short steel are circumferentially in regularity distribution, and the corresponding channel steel of adjacent three rotor tooths is one group, any one group
Channel steel mounting means on three teeth is followed successively by " short steel ", " middle steel ", " long steel ", " short steel ", " middle steel ", " length in the direction of the clock
Steel ", " long steel ", " middle steel ", " short steel ".
The advantages of the present invention over the prior art are that: rotor ventilation steel channel is taken into three different structure forms
Channel steel, flow through rotor air quantity from different degrees of change, enhance motor internal gas flow performance, reach preferably cooling effect
Fruit keeps motor temperature under identical operating status lower.
Detailed description of the invention
Fig. 1 is electric machine rotor iron core aeration structure schematic diagram；
Fig. 2 is part A enlarged drawing in Fig. 1；
Fig. 3 is the main view and right view of electric machine rotor iron core aeration structure in Fig. 1, and wherein Fig. 3 a is main view, Fig. 3 b
For right view；
Fig. 4 is I-shaped cross-section channel cross-section figure；
Fig. 5 is I-shaped cross-section streamlined channel steel schematic diagram and top view, and wherein Fig. 5 a is I-shaped cross-section streamlined slot
Steel schematic diagram, Fig. 5 b are I-shaped cross-section streamlined channel steel top view；
Fig. 6 is I-shaped cross-section linear channel steel schematic diagram；
Fig. 7 is channel steel distribution schematic diagram in one rotor radial air duct section of motor；
Fig. 8 is part B enlarged drawing in Fig. 7；
Fig. 9 is C portion enlarged drawing in Fig. 8.
Specific embodiment
The preferred embodiment of the present invention is elaborated below according to attached drawing.
(Fig. 2 is part A enlarged drawing in Fig. 1, and Fig. 3 a is Fig. 1 main view, and Fig. 3 b is Fig. 1 right as shown in Figure 1, Figure 2 and Figure 3
View), the motor rotor ventilation structure of 3 channel steels of installation of the present invention mainly includes Radial ventilation duct (1), rotor tooth
(2), axial ventilation road (3), rotor core (4) and channel steel (5).For capacity in the large-size machine of 1MW~350MW, turn
Sub- iron core (4) is uniformly divided into several sections along axial direction, and number of segment n is related with rotor axial direction length D, i.e. n=5.33 × 10-3D~
4.49×10-3D.There are a fixed gaps between adjacent rotor iron core (4), are formed Radial ventilation duct (1), Radial ventilation duct (1)
Axial width L and rotor internal diameter R1, rotor diameter R2It is related with axial length D, i.e. L=1.19 [D+3.50 (R2-R1)]×
10-3~1.67 [D+2.99 (R2-R1)]×10-3.The rotor tooth (2) of adjacent segmented rotor iron core (4) is one a pair of in the axial direction
It answers, channel steel (5) is located in Radial ventilation duct (1) and circumferentially, and is mounted on the rotor tooth of adjacent sectional rotor core (4)
(2) between, three channel steels (5) are placed between each rotor tooth (2) of adjacent sectional rotor core (4), wherein two channel steels
It is linear type channel steel, in addition one is streamlined channel steel；Rotor core (4) is slotted at shaft, forms axial ventilation road
(3), access is provided for cooling medium flowing, wherein axial ventilation road (3) section is designed as circle, diameter of phi and rotor
Internal diameter R1, rotor diameter R2It is related, i.e. Φ=0.15 (R2-R1(the R of)~0.172-R1), axial ventilation road (3) most nearby from shaft
With the radial distance W=1/2 Φ between rotor core (4) inner circle, adjacent two axial ventilation road (3) central point and rotor core
(4) angle α=18 ° of origin line.In the present embodiment, rotor internal diameter is R1=1800mm, rotor diameter R2=
2842mm, rotor core (4) axial length D=3570mm can obtain the number of segment n=of rotor core (4) segmentation by optimization design
16~19, preferably 18, axial length L=8.58mm~11.16mm of Radial ventilation duct (1), preferably 10mm, axial ventilation road is straight
Diameter Φ=156.3mm~177.1mm, preferably 166.9mm, W=83.47mm.
The section of three channel steels take it is I-shaped, due to the I-shaped cross-section steel of existing rotor ventilation steel channel
Ventilation effect is bad, and does not fully consider that channel steel changes the effect of gas flowing, and the present invention has carried out I-shaped cross-section excellent
Change design.As shown in figure 4, for the intensity for guaranteeing I-shaped channel steel, to channel steel height L2, channel cross-section width W2, channel steel web it is wide
W1With the high L of channel steel listrium1It optimizes.Wherein, channel steel height L2With rotor internal diameter R1, rotor diameter R2With axial length
It is related to spend D, is L2=D/840+ (R2-R1)/240~D/700+ (R2-R1)/200, the wide W of channel cross-section2With channel steel height L2Have
It closes, is W2=1/2L2~1/3L2, the wide W of channel steel web1With the wide W of channel cross-section2It is related, it is W1=1/2W2~1/3W2, channel steel listrium
High L1With channel steel height L2It is related, it is L1=0.1L2~0.12L2, bevel edge and web side angle β of the channel steel listrium close to web side
130 °~136 ° are designed as, preferably 135 ° in this example.In the present embodiment, rotor internal diameter is R1=1800mm, rotor
Outer diameter is R2=2842mm, rotor core (4) axial length D=3570mm, therefore L2=8.6mm~10.3mm, preferably 10mm,
W2=3.33mm~5mm, preferably 4.17mm, W1=1.39mm~2.08mm, preferably 1.52mm, L1=1mm~1.2mm, preferably
1mm。
In order to more preferably improve ventilation effect, three channel steels of the present invention described in detail below: one is I-shaped section
Surface current line style channel steel, length is longer, and the wavy formula extended structure of channel steel, and (this figure only shows whole practical as shown in Figure 5
One section of channel steel), it is referred to below with " long steel "；Other two are I-shaped cross-section linear type channel steel, and channel steel extends straight
Structure is referred to " short steel ", another root long degree is between " long steel " and " short steel " below as shown in fig. 6, wherein a root long degree is shorter
Between, it is referred to below with " middle steel ".Wherein the streamlined channel steel top view in I-shaped cross-section is as shown in Figure 5 b, width W3With its section
Face width W2It is related, i.e. W3=1.84W2~1.88W2, W herein3=7.67mm~7.84mm, preferably 7.77mm, segmental arc radius R3
(for the radius of maximum deflection point), design and channel steel height L2It is related, i.e. R3=4.3L2~4.6L2, i.e. R3=43mm~46mm,
It is preferred that 45mm.The straight length L of one segmental arc3=1.93R3, i.e. 86.85mm.It is the most obvious to be designed in this way pectinid effect.It is adjacent
Two arc segment structure sizes are identical, and bending direction is opposite.
Fig. 7, Fig. 8 and Fig. 9 are in a rotor radial air duct section, and (Fig. 8 is part B in Fig. 7 to channel steel scheme of installation
Enlarged drawing, Fig. 9 are C portion enlarged drawing in Fig. 8).Long steel described in the present embodiment is the streamlined channel steel in I-shaped cross-section, by 5
Segmental arc composition, length and rotor internal diameter R1With rotor diameter R2It is related, i.e. L4=(R2-R1)/4~(R2-R1)/3.66。
Middle steel, short steel be I-shaped cross-section linear type channel steel, length also with rotor internal diameter R1With rotor diameter R2It is related, wherein short
Steel length L5=(R2-R1)/10~(R2-R1)/9, middle steel length L6=(R2-R1)/5.9~(R2-R1)/5.1.In the present embodiment
In, rotor internal diameter R1=1800mm, rotor diameter R2=2842mm, i.e. L4=260.50mm~284.70mm, preferably
275mm, L5=104.20mm~115.77mm, preferably 110mm, L6=176.61~204.31mm, preferably 195mm.
Each channel steel is installed on two rotor pinions in the air duct between, and three channel steels are installed on each tooth, point
Not Wei an above-mentioned long steel, steel and an above-mentioned short steel among the above.Three channel steels are apart from iron core Edge Distance (in Fig. 9
W4) and tooth width L7It is related, i.e. W4=L7/10.At channel steel distal shaft end, distance L of the short steel away from nearest tooth edge8=L7/ 9~
L7/ 6, direction extends to axis.Long steel is at distal shaft end away from its nearest tooth edge distance L9With facewidth L7It is related, i.e. L9=2L7/ 9~L7/
4.Since long steel is streamlined, in, between long channel steel spacing be variate, and with channel cross-section width W2With streamlined channel steel
One segmental arc radius R3It is related, most short spacing L10=[L7+R3-(R3 2-1/4L3 2)1/2-W2]/10, direction extends to axis.In, it is short
Distance L between channel steel11=L7/ 6~L7/4.In the present embodiment, facewidth L7=40mm, R3=45mm, W2=4mm, L3=87.5mm
That is L8=4.44mm~6.67mm, preferably 5.56mm, L9=8.89mm~10mm, preferably 9.11mm, L10=6.92mm, L11=
6.67mm~10mm, preferably 7.11mm.On the whole, long steel, middle steel and short steel are circumferentially in regularity distribution, and adjacent three turn
The corresponding channel steel of sub- tooth is one group, and the preferably mounting means of the channel steel (I, II, III in Fig. 8) on three teeth of any one group is by suitable
Clockwise is followed successively by " short steel ", " middle steel ", " long steel ", " short steel ", " middle steel ", " long steel ", " long steel ", " middle steel ", " short steel ".
Similarly, motor whole tooth is divided into the several groups not being overlapped each other counterclockwise, each group of rule is identical.
The above description is merely a specific embodiment, but protection of the invention is not limited thereto, this field skill
For art personnel in the case where not changing principle, the improvement for any no substantial variations made also should be regarded as protection model of the invention
It encloses.
The content that description in the present invention is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (1)
1. a kind of motor rotor ventilation structure for installing three channel steels, it is characterised in that: mainly include Radial ventilation duct (1), turn
Sub- tooth (2), axial ventilation road (3), rotor core (4) and channel steel (5)；Rotor core (4) is uniformly divided into several sections along axial direction, section
Number n is related with rotor axial direction length D, i.e. n=5.33 × 10-3D~4.49 × 10-3D；Adjacent rotor iron core stays between (4)
There is a fixed gap, is formed Radial ventilation duct (1), the axial width L and rotor internal diameter R of Radial ventilation duct (1)1, outside rotor
Diameter R2It is related with axial length D, i.e. L=1.19 [D+3.50 (R2-R1)]×10-3~1.67 [D+2.99 (R2-R1)]×10-3；Phase
The rotor tooth (2) of adjacent segmented rotor iron core (4) corresponds in the axial direction, and channel steel (5) is located in Radial ventilation duct (1) and edge
Circle distribution, and be mounted between the rotor tooth (2) of adjacent sectional rotor core (4), each of adjacent sectional rotor core (4)
Three channel steels (5) are placed between rotor tooth (2), wherein two channel steels are linear type channel steels, in addition one is streamlined channel steel；
Rotor core (4) is slotted at shaft, is formed axial ventilation road (3), provides access for cooling medium flowing, wherein axial
Ventilating duct (3) section is designed as circle, diameter of phi and rotor internal diameter R1, rotor diameter R2It is related, i.e. Φ=0.15 (R2-
R1(the R of)~0.172-R1), axial ventilation road (3) are from the shaft most nearby radial distance W=1/ between rotor core (4) inner circle
2 Φ, angle α=18 ° of adjacent two axial ventilation road (3) central point and rotor core (4) origin line；Three channel steels
Take I-shaped, channel steel height L in section2With rotor internal diameter R1, rotor diameter R2It is related with axial length D, it is L2=
D/840+(R2-R1)/240~D/700+ (R2-R1)/200, L2It is preferred that 10mm；The wide W of channel cross-section2With channel steel height L2It is related, be
W2=1/2L2~1/3L2, W2It is preferred that 4.17mm；The wide W of channel steel web1With the wide W of channel cross-section2It is related, it is W1=1/2W2~1/3W2,
W1It is preferred that 1.52mm；The high L of channel steel listrium1With channel steel height L2It is related, it is L1=0.10L2~0.12L2, L1It is preferred that 1mm；Channel steel edge
Bevel edge and web side angle β of the plate close to web side are designed as 130 °~136 °, and three channel steels are divided into three kinds of specifications, and one
Root is the streamlined channel steel in I-shaped cross-section, and length is longer, is referred to " long steel "；Other two are I-shaped cross-section straight line type groove
Steel is referred to wherein a root long degree is shorter with " short steel ", and another root long degree is referred between " long steel " and " short steel " with " middle steel "
Generation；Wherein, long steel width W3With its cross-sectional width W2It is related, it is W3=1.84W2~1.88W2, W3It is preferred that 7.77mm；I-shaped section
The segmental arc radius R of surface current line style channel steel3With channel steel height L2It is related, it is R3=4.3L2~4.6L2, R3It is preferred that 45mm；One segmental arc
Straight length L3=1.93R3, L3For 86.85mm；The long steel is made of 5 segmental arcs, length and rotor internal diameter R1
With rotor diameter R2It is related, it is L4=(R2-R1)/4~(R2-R1)/3.66；L4It is preferred that 275mm；Short steel length L5=(R2-R1)/
10~(R2-R1)/9, L5It is preferred that 110mm；Middle steel length L6=(R2-R1)/5.9~(R2-R1)/5.1, L6It is preferred that 195mm；It is described
Each channel steel is installed on two rotor pinions in the air duct between, three channel steels is installed on each tooth, respectively one above-mentioned
Long steel, steel and an above-mentioned short steel among the above；Channel steel is apart from iron core Edge Distance W4With tooth width L7It is related, it is W4=
L7/10；At channel steel distal shaft end, distance L of the short steel away from nearest tooth edge8=L7/ 9~L7/ 6, long steel distal shaft end away from it most
Nearly tooth edge distance L9With facewidth L7It is related, it is L9=2L7/ 9~L7/ 4, L9It is preferred that 9.11mm；Between middle steel and long steel it is most short between
Away from L10=[L7+R3-(R3 2-1/4L3 2)1/2-W2]/10, L10=6.92mm；Distance L between middle steel and short steel11=L7/ 6~L7/ 4,
L11It is preferred that 7.11mm；On the whole, long steel, middle steel and short steel are circumferentially in regularity distribution, and adjacent three rotor tooths are corresponding
Channel steel be one group, any one group three teeth on channel steel mounting means be followed successively by the direction of the clock " short steel ", " middle steel ",
" long steel ", " short steel ", " middle steel ", " long steel ", " long steel ", " middle steel ", " short steel ".
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201813226U (en) * | 2010-09-14 | 2011-04-27 | 上海福源智业投资集团有限公司 | Air duct wall of generator stator core |
| JP2014155314A (en) * | 2013-02-08 | 2014-08-25 | Hitachi Ltd | Rotary electric machine |
| CN203326747U (en) * | 2013-06-08 | 2013-12-04 | 杭州金锤冷拉型钢有限公司 | High efficient ventilation channel |
| CN203607943U (en) * | 2013-11-13 | 2014-05-21 | 南阳防爆集团股份有限公司 | High-efficiency high-rotating speed high-capacity self-lubricating flame-proof motor rotor structure |
| CN104578484B (en) * | 2014-12-26 | 2017-12-08 | 北京金风科创风电设备有限公司 | Ventilation channel steel, manufacturing method thereof, ventilation structure and motor |
| CN204559256U (en) * | 2015-03-05 | 2015-08-12 | 哈尔滨电机厂有限责任公司 | A kind of novel gas flow parts |
| CN104953766B (en) * | 2015-06-17 | 2018-11-13 | 北京金风科创风电设备有限公司 | Radial ventilation cooling structure of motor |
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Effective date of registration: 20200717 Address after: 5-02, 5 / F, building 5, No. 10 yard, Jiachuang Road, Tongzhou District, Beijing Patentee after: Huachi kinetic energy (Beijing) Technology Co.,Ltd. Address before: 100191 Haidian District, Xueyuan Road, No. 37, Patentee before: BEIHANG University |
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Denomination of invention: A ventilation structure for motor rotor installed with three channel steels Effective date of registration: 20220119 Granted publication date: 20190222 Pledgee: Beijing Zhongguancun bank Limited by Share Ltd. Pledgor: Huachi kinetic energy (Beijing) Technology Co.,Ltd. Registration number: Y2022990000052 |
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Date of cancellation: 20231030 Granted publication date: 20190222 Pledgee: Beijing Zhongguancun bank Limited by Share Ltd. Pledgor: Huachi kinetic energy (Beijing) Technology Co.,Ltd. Registration number: Y2022990000052 |