CN205689451U - A kind of high pressure low noise forward centrifugal ventilation blower - Google Patents
A kind of high pressure low noise forward centrifugal ventilation blower Download PDFInfo
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- CN205689451U CN205689451U CN201620337066.4U CN201620337066U CN205689451U CN 205689451 U CN205689451 U CN 205689451U CN 201620337066 U CN201620337066 U CN 201620337066U CN 205689451 U CN205689451 U CN 205689451U
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- blower fan
- spiral case
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- high pressure
- blower
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Abstract
This utility model relates to a kind of high pressure low noise forward centrifugal ventilation blower, including impeller, air inlet, filtering screen, header board, spiral case, outlet joint and motor, spiral case housing and installing rack integral solder structure, motor is horizontal to be arranged on spiral case installing rack, blower fan integral rigidity is good, and operational shock is little.Blower fan carries filtering screen and filters sucking air, improves the operational reliability of blower fan.The main parts size of blower fan all uses fine aluminum sheet alloy to be welded, and electric machine stand uses aluminium alloy casting, reduces the weight of blower fan to greatest extent so that it is cooling blower compact conformation and lightweight while ensureing blower fan overall construction intensity.Blade design uses inducer to be backward structure, and outlet section is multiple wing type structure, and vane inlet width is more than blade exit width, can improve the output pressure of blower fan, it is ensured that the operational efficiency of blower fan, reduces the noise of blower fan, improves the comfortableness of railway car.
Description
Technical field
This utility model relates to a kind of high pressure low noise forward centrifugal ventilation blower, dissipates for the cooling of EMU traction electric machine
Heat, belongs to field of fluid machinery.
Background technology
Traction electric machine fan for cooling is arranged on the equipment compartment on motor train unit bogie side, and conveying cooling air is to EMUs
Traction electric machine carries out cooling heat radiation.Owing to equipment compartment installing space is limited, so blower fan overall dimensions must effectively be controlled make it
Compact conformation, could meet requirements of installation space.Cooling blower allows for overcoming bigger aerodynamic drag and providing foot simultaneously
Enough cooling air quantities, to meet the cooling radiating requirements of traction electric machine.Existing centrifugal fan can not meet above-mentioned requirements.
For solving the problems referred to above, the centrifugal fan of the high pressure low noise meeting EMUs requirement must be researched and developed, having as far as possible
On the premise of limit space, meet traction electric machine cooling cooling requirements.
Summary of the invention
The purpose of this utility model is to reduce the noise of blower fan, it is provided that a kind of high pressure low noise forward centrifugal ventilation blower.
The technical solution of the utility model: a kind of high pressure low noise forward centrifugal ventilation blower, including impeller, air inlet, filtration
Guard, header board, spiral case, outlet joint and motor, it is characterised in that described impeller impeller is forward direction impeller, by front wheel disc,
Rear trochal disc, core wheel, blade are welded, and wherein, blade is even circumferential distributed architecture, and vane inlet section is backward structure, goes out
Mouth section is multiple wing type structure；Blade import and export uses chamfered structure.
Described spiral case is spiral line type structure, and this spiral case is by back side panel, top board, front side board, air outlet flange, electrically connect
Connecing device installing plate, installing rack and reinforcement to be welded, wherein, spiral case uses housing and installing rack integral solder structure.
The purpose of this utility model design forward direction impeller is the high pressure demand meeting cooling blower needs.In order to further
Improving pressure and the efficiency of blower fan, blade has been carried out particular design, its vane inlet end is one section of backward structure, and the port of export is
Improving pressure design and become one section of multiple wing type structure, the profile of whole blade is such as spoon；Inducer is that backward structure can reduce
The shock at entry loss of air-flow, makes air-flow flow to rear end Multi-wing type blade section more smoothly, so that whole runner separates
Point is the most close, improves the mechanical efficiency of impeller.This blade combines the two-fold advantage of forward curved vane and backward leaning vane, both
The pressure coefficient of impeller can be improved, the pneumatic efficiency of impeller can be improved again, reduce the noise of blower fan.
Motor in this ventilation blower uses threephase asynchronous machine, and spiral case uses housing and installing rack integral solder structure shape
Formula, motor uses horizontal installation, improves rotary part integral installation rigidity, reduces blower fan operating vibration values.Air inlet increased
Screen cover filters sucking air, prevents from sucking foreign material blocking blower fan and air supply duct, and solid particle damages impeller.
Spiral case is by fine aluminum alloy welding fabrication.Installing rack and case weld are overall, increase reinforcement, can improve snail
Shell integral rigidity, can reduce again spiral case weight to greatest extent, meet EMUs equipment lightweight requirements.
This ventilation blower installs, by four installing holes on spiral case installing rack and cover plate two, the side that frame aperture is installed with elasticity
Formula is arranged on car body crossbeam, six resilient rubbber cushions connect.Stainless steel bolt is used to connect between header board and spiral case tight
Gu.Compact overall structure, is suitable for small space in equipment cabin of motor train unit and installs.
Of the present utility model being technically characterized in that have employed efficient, the impeller of high pressure coefficient, and impeller uses less width
Footpath ratio, meets the characteristic of blower fan high pressure low discharge.Using vane inlet section is backward structure, and outlet section is multiple wing type structure,
Make blower fan can provide similar blower fan higher pressure, keep reasonable aeroperformance simultaneously, reduce blower fan to greatest extent
Pneumatic eddy current loss, thus reduce the operation noise of blower fan.The most on the other hand, the air inlet of blower fan, spiral case and header board
All use fine aluminum alloy material, on the premise of ensureing blower fan overall construction intensity, reduce the weight of blower fan to greatest extent,
Meet the compactedness of EMUs cooling blower, lightweight requirements.Blower motor is horizontal to be arranged on spiral case installing rack, uses H level
Insulating Design, improves electrical machine insulation parts thermostability；Support design casting fin, uses the self cooling forced ventilation of fan, strengthens
The radiating effect of motor；Additionally motor uses wide temperature oils and fats bearing, and its operating temperature range is-40 DEG C ~ 160 DEG C, it is ensured that motor
Can normally work at ambient temperature.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that A of the present utility model is to structural representation；
Fig. 3 is the sectional structure schematic diagram of impeller；
Fig. 4 is the main TV structure schematic diagram of impeller；
In figure: 1-impeller, 2-air inlet, 3-filtering screen, 4-header board, 5-spiral case, 6-outlet joint, 7-motor, 8-
Back side panel, 9-top board, 10-front side board, 11-air outlet flange, 12-electrical cnnector installing plate, 13-installing rack, 14-strengthen
Wheel disc, 16-rear trochal disc, 17-core wheel, 18-blade before muscle, 15-.
Detailed description of the invention
With reference to above-mentioned accompanying drawing, a kind of high pressure low noise forward centrifugal ventilation blower, including impeller 1, air inlet 2, filtering screen 3,
Header board 4, spiral case 5, outlet joint 6 and motor 7, it is characterised in that described impeller 1 is by front wheel disc 15, rear trochal disc 16, core wheel
17, blade 18 is welded, and wherein, blade 18 is even circumferential distributed architecture, and blade 18 inducer is backward structure, outlet section
For multiple wing type structure；Blade 18 import and export uses chamfered structure, and vane inlet width is more than blade exit width.Blower fan complete
Pressure efficiency reaches 70%, and the running noises of blower fan has also reached design object, and declared working condition average sound pressure level is about 84dB (A), reaches
To industry advanced person's noise level.
Described spiral case 5 is spiral line type structure, and this spiral case 5 is by back side panel 8, top board 9, front side board 10, air outlet flange
11, electrical cnnector installing plate 12, installing rack 13 and reinforcement 14 are welded, and wherein, spiral case uses housing and installing rack 13
Integral solder structure.Motor uses horizontal installation, and spiral case is with bolts with header board 4.
Motor in this ventilation blower is horizontal to be arranged on spiral case installing rack, by four groups of bolts of footing and flange four groups simultaneously
Fixing, most of weight (including motor, impeller) of installing rack carrying blower fan, form for high-quality Welded, use and strengthen
Muscle improves rigidity, reduces blower fan vibration in running.
Claims (2)
1. a high pressure low noise forward centrifugal ventilation blower, including impeller (1), air inlet (2), filtering screen (3), header board (4),
Spiral case (5), outlet joint (6) and motor (7), it is characterised in that:
Described impeller (1) is welded by front wheel disc (15), rear trochal disc (16), core wheel (17), blade (18), wherein, and blade
(18) being even circumferential distributed architecture, blade (18) inducer is backward structure, and outlet section is multiple wing type structure；
Described spiral case (5) is spiral line type structure, and this spiral case (5) is by back side panel (8), top board (9), front side board (10), air-out
Mouth flange (11), electrical cnnector installing plate (12), installing rack (13) and reinforcement (14) are welded, and wherein, spiral case uses
Housing and installing rack (13) integral solder structure.
A kind of high pressure low noise forward centrifugal ventilation blower the most according to claim 1, it is characterised in that described blade (18)
Import and export uses chamfered structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337066.4U CN205689451U (en) | 2016-04-21 | 2016-04-21 | A kind of high pressure low noise forward centrifugal ventilation blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337066.4U CN205689451U (en) | 2016-04-21 | 2016-04-21 | A kind of high pressure low noise forward centrifugal ventilation blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689451U true CN205689451U (en) | 2016-11-16 |
Family
ID=57265293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620337066.4U Active CN205689451U (en) | 2016-04-21 | 2016-04-21 | A kind of high pressure low noise forward centrifugal ventilation blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201763A (en) * | 2023-01-16 | 2023-06-02 | 威海克莱特菲尔风机股份有限公司 | Forward special-shaped impeller of centrifugal fan with low specific rotation speed and small casing |
-
2016
- 2016-04-21 CN CN201620337066.4U patent/CN205689451U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201763A (en) * | 2023-01-16 | 2023-06-02 | 威海克莱特菲尔风机股份有限公司 | Forward special-shaped impeller of centrifugal fan with low specific rotation speed and small casing |
| CN116201763B (en) * | 2023-01-16 | 2023-09-26 | 威海克莱特菲尔风机股份有限公司 | Forward special-shaped impeller of centrifugal fan with low specific rotation speed and small casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230703 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. |
|
| TR01 | Transfer of patent right |