CN107070018A - Motor stator aeration structure with the streamlined channel-section steel in square-section - Google Patents
Motor stator aeration structure with the streamlined channel-section steel in square-section Download PDFInfo
- Publication number
- CN107070018A CN107070018A CN201610776976.7A CN201610776976A CN107070018A CN 107070018 A CN107070018 A CN 107070018A CN 201610776976 A CN201610776976 A CN 201610776976A CN 107070018 A CN107070018 A CN 107070018A
- Authority
- CN
- China
- Prior art keywords
- channel
- stator
- section steel
- section
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of motor stator aeration structure with the streamlined channel-section steel in square-section, mainly include sectionalized stator unshakable in one's determination, Radial ventilation duct and ventilation steel channel, wherein sectionalized stator iron core is axially distributed, it is Radial ventilation duct between adjacent sectionalized stator is unshakable in one's determination, it is formed by circumferential ventilation steel channel, stator core includes stator tooth and stator slot, adjacent sectionalized stator stator tooth unshakable in one's determination and stator slot are corresponded in the axial direction, winding is placed with stator slot, ventilation steel channel is arranged between the stator tooth of adjacent sectional stator core, described ventilation steel channel takes streamlined structure, its section uses rectangle, length is placed between each stator tooth of the adjacent sectional stator core, in, short three channel-section steels, channel-section steel is by period profile in whole Radial ventilation duct.Structure of the present invention can effectively reduce in ventilating duct windmill and be lost, and it is poor to solve existing motor stator radiating effect, the problem of stator coil afterbody local temperature rise is too high.
Description
Technical field
The present invention relates to a kind of stator aeration structure with the streamlined channel-section steel in square-section, and in particular to a kind of motor is determined
Sub- radial ventilation system, belongs to motor ventilation technical field.
Background technology
For the large-size machine using radial ventilation system, the loss of motor stator portion is main cold by Radial ventilation duct
But air flow outwards radiates.But, when cooling gas is by Radial ventilation duct, because wind path section narrows suddenly, flow velocity
Become big；When cooling gas flows out from stator bar afterbody, due to the gas of the gas and stator bar afterbody of stator bar both sides
Rate of flow of fluid differs greatly, and causes stator coil afterbody formation vortex, and vortex middle part wind speed is minimum, has a strong impact on stator coil
The radiating of afterbody.If the aeration structure design of motor is unreasonable, causes motor local temperature rise too high or uneven, have a strong impact on
The service life of motor.
In motor radial ventilation system, ventilation steel channel typically uses linear pattern, V-type and many replicated structures.Chinese patent
Number for the linear pattern stator ventilation steel channel described in 201220141957.4, although simple in construction, but stator footpath can not be changed
To air duct interior air-flow direction, stator coil afterbody eddy-current loss is big；China Patent No. is the V-type described in 201520770017.5
Stator ventilation steel channel, although can change stator wind path flow direction, but exist wind path flow to unbalanced, stator bulk temperature compared with
It is high；The ventilation steel channel of many replicated structures described in China Patent No. 201410835452.1, due to its replicated structures, due to structure
Rough, cooling gas windmill loss in air duct is larger, and radiating effect is not good.
The content of the invention
The technology of the present invention solves problem：Overcome the deficiencies in the prior art to change wind path there is provided one kind to flow to, again
The stator ventilation steel channel of windmill loss can be reduced.
The present invention technical solution be：Motor stator aeration structure with the streamlined channel-section steel in square-section, mainly
Including sectionalized stator (1) unshakable in one's determination, Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator (1) unshakable in one's determination is axially distributed,
Its hop count n is determined by the external diameter of stator core (1), is n=D/55~D/50, and D is electric machine stator iron external diameter, adjacent segmentation
It is Radial ventilation duct (2) between stator core (1), it is formed by circumferential ventilation steel channel (3), Radial ventilation duct (2)
Axial width LdWith electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+0.3Lfe)/55~(0.2D+
0.1Lfe)/35, stator core (1) includes stator tooth (4) and stator slot (5), the stator tooth of adjacent sectionalized stator iron core (1)
(4) corresponded in the axial direction with stator slot (5), winding is placed with stator slot (5), ventilation steel channel (3) is arranged on adjacent point
Between the stator tooth (4) of section stator core (1), described ventilation steel channel (3) takes streamlined structure, and its section uses rectangle,
Channel cross-section width is L1, L1With stator facewidth btIt is relevant, it is L1=bt/ 3~bt/ 2, section thickness is L2, L2With air duct axial direction
Width LdIt is relevant, L2=Ld, channel-section steel width is L3, L3Size and cross-sectional width L1It is relevant, i.e. L3=L1, square-section streamline type groove
Steel deflection distance r and angle of bend θ and stator facewidth btAnd the high h of stator toothsIt is relevant, i.e. r=bt/ 6~bt/ 3,Wherein deflection distance r be the streamlined channel-section steel maximum deflection point in square-section with it is two neighboring curved
Radial distance between Qu Zhongdian, angle of bend θ is in the tangent line of midpoint between two neighboring bending and two neighboring bending
Angle between point line；Three grooves of long, medium and short are placed between each stator tooth (4) of the adjacent sectional stator core (1)
Steel, wherein long channel-section steel is made up of six bendings, middle channel-section steel is made up of five bendings, and short channel-section steel is made up of four bendings.Long channel-section steel is straight
Line length Ls1=0.13 (D-2hs(the D-2h of)~0.18s), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s),
Short channel-section steel straight length Ls3=0.09 (D-2hs(the D-2h of)~0.11s), in channel-section steel proximal ends, three channel-section steel distance edges unshakable in one's determination
Distance is ht, length is 7mm~10mm, long channel-section steel center and nearside tooth back gauge bt24With short channel-section steel center with it is near
Side tooth back gauge bt21It is equal, i.e. bt21=bt24=0.4bt, the middle long channel-section steel centre distance b of channel-section steel centre distancet23With apart from short groove
The centre distance b of steelt22It is equal, i.e. bt22=bt23=0.6bt.On the whole, channel-section steel presses period profile in whole Radial ventilation duct
Interior, using three teeth as a cycle, on three teeth in a cycle, the preferred mounting means of channel-section steel is followed successively by the direction of the clock
" long channel-section steel ", " middle channel-section steel ", " short channel-section steel ", " long channel-section steel ", " middle channel-section steel ", " short channel-section steel ", " short channel-section steel ", " middle channel-section steel ", " elongated slot
Steel ".
The advantage of the present invention compared with prior art is：Ventilating system of the present invention has compared with prior art
Following effect：The streamlined ventilation steel channel invented can change the flow direction of cooling gas, can increase cooling gas with
The contact area of stator core, improves cooling capacity, in the case of identical air quantity, and radiating efficiency increase increases greatly
Plus.In addition, by changing channel-section steel quantity, thus it is possible to vary cooling gas flow direction, effectively reduction stator coil afterbody vortex is damaged
Consumption, makes motor radiating efficiency increase by 15% or so.
Brief description of the drawings
Fig. 1 is electric machine stator iron aeration structure schematic diagram；
Fig. 2 is motor stator Radial ventilation duct partial enlargement structural representation；
Fig. 3 is the streamlined channel-section steel overall structure diagram in square-section
Fig. 4 is the streamlined channel-section steel left view in square-section；
Fig. 5 is that stator between cog installs the different channel-section steel partial enlarged drawings of three length；
Fig. 6 is part A enlarged drawing in Fig. 5.
Embodiment
The preferred embodiment of the present invention is elaborated below according to accompanying drawing.
The parameter of electric machine that the present embodiment is related to：Frame diameter D=1260mm, Lfe=1340mm, stator facewidth bt=
19.3mm, the high h of stator tooths=81.4mm.As shown in figure 1, the motor of the present invention with the streamlined channel-section steel in square-section is fixed
Sub- aeration structure, mainly includes sectionalized stator (1) unshakable in one's determination, Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator iron
The heart (1) is axially distributed, and its hop count n is determined by the external diameter of stator core (1), is n=D/55~D/50, and D is motor stator iron
It is Radial ventilation duct (2) between heart external diameter, adjacent sectionalized stator (1) unshakable in one's determination, it is by circumferential ventilation steel channel (3) shape
Into the axial width L of Radial ventilation duct (2)dWith electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+
0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator core (1) includes stator tooth (4) and stator slot (5), and adjacent segmentation is determined
The stator tooth (4) and stator slot (5) of sub- iron core (1) are corresponded in the axial direction, and winding, ventilation slot are placed with stator slot (5)
Steel (3) is arranged between the stator tooth (4) of adjacent sectional stator core (1), and its concrete structure is as shown in Figure 2.Set by optimization
Meter, can must be segmented hop count n=22.9~25.2 of stator core, preferably 24, the axial length L of Radial ventilation ductd=9.6mm~
11mm, preferably 10mm.
In order to more preferably improve ventilation effect, channel-section steel of the present invention takes streamlined structure, and its section uses rectangle,
Channel-section steel structure is as shown in Figure 3.Channel cross-section width is L1, L1With stator facewidth btIt is relevant, by optimization design, L1=bt/ 3~
bt/ 2, then L1=6.43mm~9.65mm, preferably 8mm.Section thickness is L2, L2With air duct axial width LdIt is relevant, L2=Ld,
That is L2=10mm.In order to which streamlined channel-section steel structure is described in more detail, it is research object to take channel-section steel left view, as shown in Figure 4.Channel-section steel
Width is L3, L3Size and cross-sectional width L1It is relevant, i.e. L3=L1, L3=8mm.The streamlined channel-section steel deflection distance r in square-section and
Angle of bend θ and stator facewidth btAnd the high h of stator toothsIt is relevant, i.e. r=bt/ 6~bt/ 3,Then
R=3.2mm~6.5mm, preferably 4mm, θ=14.7 °~27.8 °, preferably 17 °, part represents channel-section steel shown in W in wherein Fig. 4
One bending, deflection distance r is the radial direction between the streamlined channel-section steel maximum deflection point in square-section and two neighboring bending midpoint
Distance, angle of bend θ is the angle between the tangent line and two neighboring bending midpoint line of midpoint between two neighboring bending,
This design ensure that maximum ventilation radiating effect while coil afterbody eddy-current loss is reduced.
In order to further improve the ventilation effect of stator, each stator of adjacent sectional stator core (1) of the present invention
Three streamlined channel-section steels in square-section of long, medium and short are placed between tooth (4), as shown in Figure 5.Long channel-section steel is made up of six bendings, in
Channel-section steel is made up of five bendings, and short channel-section steel is made up of four bendings.Long channel-section steel straight length Ls1=0.13 (D-2hs(the D- of)~0.18
2hs), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short channel-section steel straight length Ls3=0.09 (D-2hs)~
0.11(D-2hs), in the present embodiment, frame diameter D=1260mm, the high h of stator slots=81.4mm, then Ls1=
142.6mm~197.5mm, preferably 164mm, Ls2=109.8mm~164.7mm, preferably 128mm, Ls3=98.7mm~
120.7mm, preferably 106mm.Each channel-section steel is installed in air duct on each tooth, and three channel-section steels, channel-section steel entirety edge are laid on each tooth
Radial direction extends.Fig. 6 is the enlarged drawing of part A in Fig. 5, and long channel-section steel, middle channel-section steel and short channel-section steel are represented by a, b and c respectively.
Channel-section steel proximal ends, channel-section steel distance Edge Distance unshakable in one's determination is ht, length is 7mm~10mm, preferably 8.5mm.A channel-section steels center with
Nearside tooth back gauge (b in Fig. 6t24) with c channel-section steels center and nearside tooth back gauge (b in Fig. 6t21) equal, i.e. bt21=bt24
=0.4bt, b channel-section steel centre distance a channel-section steels centre distance (b in Fig. 6t23) with the centre distance (b in Fig. 6 apart from c channel-section steelst22) phase
Deng i.e. bt22=bt23=0.6bt.On the whole, channel-section steel presses period profile in whole Radial ventilation duct, using three teeth as a week
On phase, three teeth in a cycle, the preferred mounting means of channel-section steel be followed successively by the direction of the clock " long channel-section steel ", " middle channel-section steel ",
" short channel-section steel ", " long channel-section steel ", " middle channel-section steel ", " short channel-section steel ", " short channel-section steel ", " middle channel-section steel ", " long channel-section steel ", its distribution are schemed as described above
Shown in 5.The design has good water conservancy diversion effect to cooling gas in ventilating duct, and stator coil afterbody eddy-current loss substantially subtracts
It is small.
The foregoing is only a specific embodiment of the invention, but the protection of the present invention is not limited thereto, this area skill
Art personnel are not in the case where changing principle, and any improvement without substantial variations made also should be regarded as the protection model of the present invention
Enclose.
The content not being described in detail in description of the invention belongs to prior art known to professional and technical personnel in the field.
Claims (1)
1. the motor stator aeration structure with the streamlined channel-section steel in square-section, it is characterised in that：Mainly include sectionalized stator iron
The heart (1), Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator iron core (1) are axially distributed, and its hop count n is by stator
The external diameter of unshakable in one's determination (1) is determined, is n=D/55~D/50, and D is electric machine stator iron external diameter, adjacent sectionalized stator (1) unshakable in one's determination it
Between be Radial ventilation duct (2), it is formed by circumferential ventilation steel channel (3), the axial width L of Radial ventilation duct (2)dWith
Electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator
Unshakable in one's determination (1) includes stator tooth (4) and stator slot (5), and the stator tooth (4) and stator slot (5) of adjacent sectionalized stator iron core (1) exist
Corresponded on axial direction, winding is placed with stator slot (5), ventilation steel channel (3) is arranged on determining for adjacent sectional stator core (1)
Between sub- tooth (4), described ventilation steel channel (3) takes streamlined structure, and its section uses rectangle, and channel cross-section width is L1, L1
With stator facewidth btIt is relevant, it is L1=bt/ 3~bt/ 2, section thickness is L2, L2With air duct axial width LdIt is relevant, L2=Ld,
Channel-section steel width is L3, L3Size and cross-sectional width L1It is relevant, i.e. L3=L1, the streamlined channel-section steel deflection distance r in square-section and bending
Angle, θ and stator facewidth btAnd the high h of stator toothsIt is relevant, i.e. r=bt/ 6~bt/ 3,It is wherein curved
Song is the radial distance between the streamlined channel-section steel maximum deflection point in square-section and two neighboring bending midpoint, angle of bend apart from r
It is the angle between the tangent line and two neighboring bending midpoint line of midpoint between two neighboring bending to spend θ；Described adjacent point
Three channel-section steels of long, medium and short are placed between each stator tooth (4) of section stator core (1), wherein long channel-section steel is by six bending groups
Into middle channel-section steel is made up of five bendings, and short channel-section steel is made up of four bendings.Long channel-section steel straight length Ls1=0.13 (D-2hs)~
0.18(D-2hs), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short channel-section steel straight length Ls3=0.09
(D-2hs(the D-2h of)~0.11s), in channel-section steel proximal ends, three channel-section steel distance Edge Distances unshakable in one's determination are ht, length be 7mm~
10mm, long channel-section steel center and nearside tooth back gauge bt24With short channel-section steel center and nearside tooth back gauge bt21It is equal, i.e.,
bt21=bt24=0.4bt, the middle long channel-section steel centre distance b of channel-section steel centre distancet23With the centre distance b apart from short channel-section steelt22It is equal,
That is bt22=bt23=0.6bt.On the whole, channel-section steel presses period profile in whole Radial ventilation duct, using three teeth as a cycle,
On three teeth in a cycle, the preferred mounting means of channel-section steel is followed successively by " long channel-section steel ", " middle channel-section steel ", " short in the direction of the clock
Channel-section steel ", " long channel-section steel ", " middle channel-section steel ", " short channel-section steel ", " short channel-section steel ", " middle channel-section steel ", " long channel-section steel ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776976.7A CN107070018B (en) | 2016-08-29 | 2016-08-29 | Motor stator aeration structure with the streamlined channel steel in rectangular section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776976.7A CN107070018B (en) | 2016-08-29 | 2016-08-29 | Motor stator aeration structure with the streamlined channel steel in rectangular section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107070018A true CN107070018A (en) | 2017-08-18 |
| CN107070018B CN107070018B (en) | 2019-05-17 |
Family
ID=59617151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610776976.7A Expired - Fee Related CN107070018B (en) | 2016-08-29 | 2016-08-29 | Motor stator aeration structure with the streamlined channel steel in rectangular section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107070018B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| EP2765684A2 (en) * | 2013-02-08 | 2014-08-13 | Hitachi, Ltd. | Rotating electrical machine |
| CN104953766A (en) * | 2015-06-17 | 2015-09-30 | 北京金风科创风电设备有限公司 | Radial ventilation cooling structure of motor |
| WO2016125534A1 (en) * | 2015-02-06 | 2016-08-11 | 株式会社日立製作所 | Rotating electric machine |
-
2016
- 2016-08-29 CN CN201610776976.7A patent/CN107070018B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP2765684A2 (en) * | 2013-02-08 | 2014-08-13 | Hitachi, Ltd. | Rotating electrical machine |
| 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 |
| WO2016125534A1 (en) * | 2015-02-06 | 2016-08-11 | 株式会社日立製作所 | Rotating electric machine |
| CN104953766A (en) * | 2015-06-17 | 2015-09-30 | 北京金风科创风电设备有限公司 | Radial ventilation cooling structure of motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107070018B (en) | 2019-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102518602B (en) | Centrifugal fan impeller and centrifugal fan | |
| CN100589308C (en) | A kind of radial ventilated cooling motor | |
| CN106329758B (en) | A kind of motor stator ventilation steel channel structure | |
| CN203869199U (en) | Outlet housing of air conditioner outdoor unit and air conditioner outdoor unit | |
| CN102042075A (en) | Vehicle intercooler based on heat medium splitting technology | |
| CN206195492U (en) | Stator duct spacer structure with reduce eddy current loss | |
| CN204669165U (en) | Motor radial ventilation cooling structure | |
| CN202140342U (en) | Air conditioner and centrifugal fan blade thereof | |
| CN107070018A (en) | Motor stator aeration structure with the streamlined channel-section steel in square-section | |
| CN206180716U (en) | Duct spacer structure with water conservancy diversion effect | |
| CN104142084B (en) | A kind of heat exchanger for power station 1,000,000 unit indirect air cooling system | |
| CN107070020A (en) | The stator aeration structure being distributed many channel-section steels more | |
| CN106357022A (en) | Motor stator ventilating structure provided with streamline channel steel with I-shaped sections | |
| CN206195493U (en) | Motor multislot steel stator ventilation structures that distribute more | |
| CN107070019A (en) | Motor stator aeration structure with square-section channel-section steel | |
| CN106329760A (en) | Multi-structure and multi-distribution stator ventilation channel steep structure | |
| CN106329759A (en) | Stator ventilation duct with diversion and ventilation functions | |
| CN101144484A (en) | Through-flow fan impeller | |
| CN106895026B (en) | Assembling closed fan impeller | |
| CN106329761A (en) | Double-channel-steel stator ventilation structure for motor | |
| CN106230149B (en) | Stator aeration structure with I-shaped cross-section and rectangular section built channel | |
| CN106357021A (en) | Improved structure for radial steel ventilation channels for large motor | |
| CN203702669U (en) | Anti-surge structure for axial flow fan of metro | |
| CN201652730U (en) | Air conditioner set centrifugal fan air outlet overhead flow equalization device | |
| CN106253512A (en) | It is beneficial to the large-size machine stator ventilation steel channel structure of heat radiation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20190829 |