CN207111517U - A kind of high pressure force coefficient EMUs draw blower fan - Google Patents
A kind of high pressure force coefficient EMUs draw blower fan Download PDFInfo
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- CN207111517U CN207111517U CN201720531620.7U CN201720531620U CN207111517U CN 207111517 U CN207111517 U CN 207111517U CN 201720531620 U CN201720531620 U CN 201720531620U CN 207111517 U CN207111517 U CN 207111517U
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- blower fan
- impeller
- air inlet
- blade
- high pressure
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Abstract
It the utility model is related to a kind of high pressure force coefficient EMUs traction blower fan, including air inlet mounting assembly, air inlet installing plate, spiral case, impeller, motor and air outlet flange, to curved blade and straight air port technology before being employed in this blower fan, air outlet uses diffusion structure, in the case of profile is size-constrained, blower pressure coefficient is larger, by selecting rational blade quantity and blade exit setting angle, air velocity distribution further optimizes, so that the flow and pressure of blower fan meet that the cooling of EMUs traction electric machine requires, and noise acoustic power level is less than 95dB (A).Impeller has selected forward direction curved blade impeller, and preceding wheel disc tilted structure, core wheel and rear trochal disc riveting form.Because the forward direction curved blade angle of outlet is big, pressure coefficient is high, and air inlet optimizes with impeller clearance, the reasonable selection of impeller blade quantity and blade exit setting angle, ensure that blower pressure coefficient reaches highest, windage loss is few, and pneumatic noise reaches floor level.
Description
Technical field
A kind of high pressure force coefficient EMUs traction blower fan is the utility model is related to, it is a kind of centrifugal fan, for stream
Body mechanical field.
Background technology
According to the traction blower fan cooling technology requirement of certain EMUs, compressor flow 0.58m3/ s, static pressure 1750Pa, blower fan
Noise acoustic power level should be less than 95dB (A), and weight is less than 40Kg.Because the EMUs locus limits, during design outside blower fan
The size-constrained system of shape, lengthwise dimension can not be more than 464mm, and width size can not be more than 590mm, short transverse chi
It is very little to be more than 570mm.Traction electric machine cooling requirements are high, and the resistance of ducting is big, higher to traction blower pressure coefficient requirements, by existing
Some ventilator structures, fan static pressure, noise and weight are difficult to the requirement for meeting above-mentioned parameter.
The content of the invention
The purpose of this utility model is to overcome the shortcomings of prior art and defect, there is provided a kind of pressure coefficient is high, weight
Light and low noise high pressure force coefficient EMUs traction blower fan.
The technical solution of the utility model：A kind of high pressure force coefficient EMUs traction blower fan, including air inlet mounting assembly,
Air inlet, installing plate, spiral case, impeller, motor and air outlet flange, it is characterised in that the described high pressure force coefficient EMUs
Traction blower fan is centrifugal fan, and the impeller in high pressure force coefficient EMUs traction blower fan is by core wheel, rear trochal disc, blade and preceding
Wheel disc forms, wherein, preceding wheel disc is tilted structure, and core wheel is integrated with rear trochal disc riveting, and blade is to be preceding to curved blade knot
Structure；
Described spiral case is formed by front side board, back side panel, top plate and air outlet flange welding, and the spiral case, which is provided with, to be strengthened
Muscle, the molded line of spiral case inwall is log spiral, and blower fan snail tongue is deep tongue structure, and spiral case air outlet is diffusion structure；
Described motor is threephase asynchronous, and the drive end bearing bracket of the motor passes through four bolts and the rear side of spiral case
Plate connects；Bearing of motor is low temperature resistant bearing；40 degrees below zero environmental requirement can be met.
Described a kind of high pressure force coefficient EMUs traction blower fan, it is characterised in that described impeller is low temperature resistant low-alloy
Structure of steel product.I.e. impeller material selects low temperature resistant low-alloy steel product.
Axial distance 18-20mm between the back side panel of described spiral case and the rear trochal disc of impeller.Optimum distance is 18mm,
The gap of wheel disc is 2-4 mm before described air inlet and impeller.Best clearance is 2mm,
Blade quantity in described impeller is 24.
Air inlet in described air inlet mounting assembly is straight tuyere structure.
The technical essential of this blower fan：Diffusion structure is used to curved blade and straight air port technology, air outlet before employing,
In the case of profile is size-constrained, blower pressure coefficient is high, by selecting rational blade quantity and blade import and export established angle
Degree, air velocity distribution further optimizes so that the flow and pressure of blower fan meet that the cooling of EMUs traction electric machine requires, efficiency and
Noise acoustic power level is less than 95dB (A).Impeller has selected forward direction curved blade impeller, preceding wheel disc tilted structure, core wheel and after
Wheel disc riveting forms.Because the forward direction curved blade angle of outlet is big, pressure coefficient is high, and air inlet optimizes with impeller clearance, impeller
The reasonable selection of blade quantity and blade exit setting angle, it ensure that blower pressure coefficient and efficiency reach highest, air-flow damage
Lose less, pneumatic noise reaches floor level.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
In figure：1- air inlet mounting assemblies, 2- air inlets, 3- installing plates, 4- front side boards, 5- spiral cases, 6- top plates, 7- rear sides
Plate, 8- reinforcements, 9- impellers, 10- threephase asynchronouses, 11- core wheels, 12- rear trochal discs, 13- blades, wheel disc before 14-,
15- air outlet flanges.
Embodiment
Referring to accompanying drawing, a kind of high pressure force coefficient EMUs draw blower fan, including air inlet mounting assembly 1, air inlet 2, peace
Loading board 3, spiral case 5, impeller 9, motor 10 and air outlet flange 15, it is characterised in that the described high pressure force coefficient EMUs
Traction blower fan is centrifugal fan, and the impeller 9 in high pressure force coefficient EMUs traction blower fan is by core wheel 11, rear trochal disc 12, leaf
Piece 13 and preceding wheel disc 14 form, wherein, preceding wheel disc 14 is tilted structure, and core wheel 11 is integrated with the riveting of rear trochal disc 12, blade
13 to be preceding to curved blade structure；
Described spiral case 5 is welded by front side board 4, back side panel 7, top plate 6 and air outlet flange 15, is set on the spiral case 5
There is reinforcement 8, described spiral case 5 is welded by front side board 4, back side panel 7, top plate 6 and air outlet flange 15, on the spiral case 5
Provided with-reinforcement 8, the molded line of the inwall of spiral case 5 is log spiral, and blower fan snail tongue is deep tongue structure, and spiral case air outlet is diffusion
Structure；
Described motor 10 is threephase asynchronous, and the drive end bearing bracket of the motor 10 passes through four bolts and spiral case 5
Back side panel 7 connect；Bearing of motor is low temperature resistant bearing；40 degrees below zero environmental requirement can be met.
Described impeller 9 is low temperature resistant low-alloy steel product structure.
Air inlet 2 in described air inlet mounting assembly 1 is straight tuyere structure.
Axial distance between the back side panel of described spiral case 5 and the rear trochal disc 12 of impeller 9 is 18 mm.
The gap of described air inlet 2 and wheel disc 14 before impeller is 2mm.
The quantity of blade 13 in described impeller 9 is 24.
This high pressure force coefficient EMUs draw blower fan due to before impeller blade 13 to the high pressure performance of curved blade, blade
13 rational exit installation angle degree, air inlet 2, spiral case 5, the spatial optimization of impeller 9 configuration with ensure that blower fan in specified work
The efficiency highest of condition point, pressure coefficient is maximum, and pneumatic noise reaches floor level.
Claims (3)
1. a kind of high pressure force coefficient EMUs draw blower fan, including air inlet mounting assembly（1）, air inlet（2）, installing plate（3）、
Spiral case（5）, impeller（9）, motor（10）With air outlet flange（15）, it is characterised in that：
A, described high pressure force coefficient EMUs traction blower fan is centrifugal fan, in high pressure force coefficient EMUs traction blower fan
Impeller（9）By core wheel（11）, rear trochal disc（12）, blade（13）With preceding wheel disc（14）Composition, wherein, preceding wheel disc（14）To tilt
Formula structure, core wheel（11）With rear trochal disc（12）Riveting is integrated, blade（13）To be preceding to curved blade structure；
B, described spiral case（5）By front side board（4）, back side panel（7）, top plate（6）With air outlet flange（15）It is welded, the snail
Shell（5）It is provided with reinforcement（8）, spiral case（5）The molded line of inwall is log spiral, and blower fan snail tongue is deep tongue structure, and spiral case goes out
Air port is diffusion structure；
C, described motor（10）For threephase asynchronous, the motor（10）Drive end bearing bracket pass through four bolts and spiral case
（5）Back side panel（7）Connection；Bearing of motor is low temperature resistant bearing；
E, described air inlet mounting assembly（1）In air inlet（2）For vertical air inlet structure.
A kind of 2. high pressure force coefficient EMUs traction blower fan according to claim 1, it is characterised in that described impeller（9）
For low temperature resistant low-alloy steel product structure.
A kind of 3. high pressure force coefficient EMUs traction blower fan according to claim 1, it is characterised in that described spiral case（5）
Back side panel and impeller（9）Rear trochal disc（12）Between axial distance be 18-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720531620.7U CN207111517U (en) | 2017-05-15 | 2017-05-15 | A kind of high pressure force coefficient EMUs draw blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720531620.7U CN207111517U (en) | 2017-05-15 | 2017-05-15 | A kind of high pressure force coefficient EMUs draw blower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207111517U true CN207111517U (en) | 2018-03-16 |
Family
ID=61593114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720531620.7U Active CN207111517U (en) | 2017-05-15 | 2017-05-15 | A kind of high pressure force coefficient EMUs draw blower fan |
Country Status (1)
| Country | Link |
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| CN (1) | CN207111517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953175A (en) * | 2018-09-13 | 2018-12-07 | 株洲联诚集团控股股份有限公司 | A kind of motor train unit converter forward multiple wing formula riveting double-impeller centrifugal ventilation blower |
-
2017
- 2017-05-15 CN CN201720531620.7U patent/CN207111517U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953175A (en) * | 2018-09-13 | 2018-12-07 | 株洲联诚集团控股股份有限公司 | A kind of motor train unit converter forward multiple wing formula riveting double-impeller centrifugal ventilation blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230721 Address after: No. 66 and 68 Liancheng Road, Shifeng District, Zhuzhou City, Hunan Province, 412000 Patentee after: HUNAN LINCE ROLLING STOCK EQUIPMENT Co.,Ltd. Address before: 412000 technical management department, Lianxin group, Tianxin north gate, Shifeng District, Zhuzhou, Hunan Patentee before: ZHUZHOU LINCE GROUP Co.,Ltd. |