CN203035610U - High flow and high aspect ratio blade axial flow fan - Google Patents
High flow and high aspect ratio blade axial flow fan Download PDFInfo
- Publication number
- CN203035610U CN203035610U CN 201220663777 CN201220663777U CN203035610U CN 203035610 U CN203035610 U CN 203035610U CN 201220663777 CN201220663777 CN 201220663777 CN 201220663777 U CN201220663777 U CN 201220663777U CN 203035610 U CN203035610 U CN 203035610U
- Authority
- CN
- China
- Prior art keywords
- blade
- aspect ratio
- high aspect
- flow
- support ring
- 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.)
- Expired - Fee Related
Links
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001133 acceleration Effects 0.000 abstract 1
- 230000003137 locomotive effect Effects 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the technical field of fans and discloses a high flow and high aspect ratio blade axial flow fan which is characterized by being composed of a drive motor, an inner support ring, support plates, a wheel hub, blades, connecting air tubes and the like. The motor is fixed on the inner support ring through bolts. The inner support ring is connected with the connecting air tubes through the support plates. The wheel hub is directly connected with a motor shaft. A high aspect ratio and independent blade mode is adopted by the working wheel blades, therefore higher pressurizing and through-flow abilities of a working wheel are guaranteed under the condition of not changing rotation speed, and the axial size of the fan is effectively reduced. The blades and a tenon head are in an integrated structure, the blades are fixed on the wheel hub through bolts, and the blades are simultaneously guaranteed to be alone machined and manufactured and convenient to disassemble and replace. Air flow enters from an air inlet formed at the front end, flows through the drive motor and the inner support ring and enters the working wheel to conduct acceleration and pressurizing, the air flow obtains enough speed and pressure after flowing through the working wheel, therefore the air flow enters a brake resistor unit cooling module connected with the rear section, and enough cooling effect is achieved.
Description
Technical field
The utility model belongs to the ventilator technical field, relates to a kind of big flow propeller fan, is applied to the cooling channel of a kind of locomotive brake braking resistor unit and relevant device.
Background technique
Along with improving constantly of domestic high-power locomotive motion speed, carrying capacity, not only caused increasing considerably of railroad traction equipment heating amount, the bigger load of also bringing for the locomotive brake braking system makes the quantity of skidding resistance unit and heating value significantly increase simultaneously.Stably move in order to ensure motorcycle safety, the requirement of the special-purpose heating component cooling blower of locomotive is improved constantly.At present, the special-purpose cooling blower of China's locomotive adopts the import blower fan mostly, and under the situation of locomotive operation environment change, the procurement cycle of import blower fan is long, and problems such as cost height and inconvenient maintenance are difficult to satisfy the requirement of domestic railway traffic transport undertaking development.Locomotive brake braking resistor unit has that power is big, heat-generating units is many, the characteristics that heating value is big; In a single day the braking resistor unit can not in time cool off, and then can cause the continuous rising of braking resistor cell temperature even must burn, and makes locomotive brake system down, and this will lead to catastrophic effect; Motor car structure, import and export air channel and runnability have all limited taking up room of blower fan simultaneously, have restricted the ability to work of blower fan.Therefore, require the cooling blower of locomotive brake braking resistor to have features such as air quantity is big, blast is high, compact structure, consider the requirement of hommization working environment simultaneously, blower fan also should have lower aerodynamic noise and vibrating noise.
Domestic high-power, express locomotive since operating conditions change, original skidding resistance cooling blower can not satisfy new operating conditions, if make original blower fan satisfy higher outlet blast requirement by improving rotating speed merely, then can make the blower fan drive motor exist overload dangerous, also not meet energy-conservation requirement simultaneously.Therefore the requirement to new cooling blower is that boundary dimension is constant, under the constant substantially prerequisite of rotating speed, flow, power, realizes the raising of blast and the improvement of efficient.Among the design, satisfied under the prerequisite of many-sided restrictions such as boundary dimension, rotating speed, flow, power, realized increasing substantially of cooling blower outlet blast, and further improved its mobile performance, satisfied the cooling requirement of locomotive brake braking resistor unit.
Summary of the invention
The purpose of this utility model provides a kind of propeller fan of big flow high aspect ratio blade, is subjected at boundary dimension, rotating speed, flow, power etc. under the condition of strict restriction, realizes the significantly raising of blower fan outlet blast and the improvement of efficient.
The technological scheme that the utility model adopts for achieving the above object is:,
The characteristics of the propeller fan of a kind of big flow high aspect ratio blade of the utility model are: the big through-current capability of compressor flow is strong, use simple in structure, compact, the easily manufactured impeller that works independently, wheel hub and blade can be processed respectively, blade adopts the high aspect ratio blade that can cast separately, this type vane airfoil profile is simple and effective, and be easy to processing, effectively reduce the axial dimension of draught fan impeller, this high aspect ratio blade makes blower fan also can obtain higher outlet pressure in the confined space, under the constant condition of rotating speed, and satisfies resistance unit and must cool off requirement.
This big flow high aspect ratio blade axial-flow fan device is made up of drive motor, inside support ring, dunnage, wheel hub, blade, connection air duct etc.Motor is by being bolted on the inside support ring, inside support ring by dunnage be connected air duct and link to each other, Placement adopts welding manner, wheel hub and motor directly connect by coupling, all blade pass are crossed bolt and are installed on the wheel hub, connect air duct and closely be connected with braking resistor unit, rear portion refrigerating module with anterior intake duct by bolt, prevent gas leakage.Air-flow enters from the front end intake duct, flow through drive motor and inside support ring, enter and accelerate supercharging in the active wheel, the Ye Dingyu of impeller blade connects the gap that there is 3-10mm in the air duct inwall, air-flow is by behind the active wheel, thereby obtaining enough speed and pressure enters in the braking resistor unit refrigerating module that back segment is connected, to reach enough cooling effects.Impeller blade adopts the blade of 10-15 sheet variable cross section high aspect ratio in the utility model, the twisted blade of circular rector distortion rule such as approximate, the distortion form as shown in Figure 5, the aspect ratio scope is between 2-4, the blade angle scope is 25 °-35 °, has two groups of bolt connecting holes on the blade root tenon, and blade and tenon joint rounding radius are 10-25mm, the impeller inlet front end is equipped with 3-9 sheet (dividing three groups) uniform thickness water conservancy diversion dunnage, and connecting on the air duct both sides has some bolt connecting holes.
The utility model is reasonable in design, and its effect and innovation mainly comprise:
(1) the blower fan drive motor is preposition at the impeller eye end, and this mode is easy to install and fix, and makes drive motor itself also can obtain certain cooling effect;
(2) inside support ring and dunnage play certain guide functions, reduce the impeller inlet flow field disturbance that the pre-driver motor brings, and guarantee that its inlet flow field is uniform and stable;
(3) runner vane adopts the form of high aspect ratio, individual vanes, guaranteed that active wheel has higher supercharging and through-current capability under the constant condition of rotating speed, effectively reduce the axial dimension of blower fan, and make the sweeping style in the impeller more meet flow feature, reduced flow losses;
(4) blade and tenon are integral structure, by being bolted on the wheel hub, have guaranteed that simultaneously manufacturing separately and dismounting that blade itself has replace characteristics easily;
(5) this invention has taken into account in many-sided restriction such as boundary dimension, rotating speed, flow, power, the significantly raising of impeller outlet blast and the improvement of mobile performance have been realized, the blower fan outlet section directly is connected with skidding resistance unit module, be convenient to the abundant cooling to it, reduce friction loss.
Description of drawings
Fig. 1 is main sectional structure schematic representation of the present utility model.
Fig. 2 is right side of the present utility model structural representation.
Fig. 3 is plan structure schematic representation of the present utility model.
Fig. 4 is vane foil schematic representation of the present utility model.
Among the figure: 1 drive motor; 2 inside support rings; 3 dunnages; 4 wheel hubs; 5 blades; 6 connect air duct.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further specified, but protection domain of the present utility model is not limited to specific embodiment.
Embodiment 1
Big flow high aspect ratio leaf type propeller fan as Figure 1-3 is by drive motor 1, inside support ring 2, dunnage 3, wheel hub 4, blade 5 be connected air duct 6 and form.Drive motor 1 is preposition, be connected on the inside support ring 2 by bolt, inside support ring 2 is fixed on the dunnage 3 by welding manner, and dunnage 3 is fixed in by welding manner and connects on the air duct 6, and drive motor 1 has obtained fixing with the relative position that is connected air duct 6 like this; Blade 5 is connected to form rotatable impeller by bolt and wheel hub 4, wheel hub 4 links to each other with the axle of drive motor 1 by coupling, blade 5 is fixed with respect to the position that is connected air duct 6 with wheel hub 4 like this, and the relative position of whole like this all parts of blower fan is fixed.Impeller blade 5 adopts 12 in this example, and blade 5 all adopts the high aspect ratio blade as shown in Figure 4, average aspect ratio 2-4, and blade 5 blade root established angles are 31.5 °, blade and tenon joint rounding, chamfer radius 20mm.Connect between air duct 6 and the inside support ring 2 and be welded with the uniform thickness dunnage 3 that 6 (three groups) have guide functions concurrently.Air-flow will be from the induction part drive motor 1 of flowing through, after the guide functions through inside support ring 2 and dunnage 3, enter and accelerate pressurization in the impeller passage of rotation, enter in the follow-up braking resistor unit that needs cooling through the air-flow of speedup supercharging, finally satisfy actual cooling requirement.
During installation, connect air duct 6 and inside support ring 2 by with the supporting structure that forms the main flow passage component of blower fan that is welded to connect of dunnage 3, drive motor 1 by bolt on inside support ring 2, blade 5 links to each other with wheel hub 4 by bolt and forms impeller, wheel hub 4 links to each other with the axle of drive motor 1 by coupling, and the relative position of all parts is fixed like this.Terminal box and wiring flexible pipe are arranged on the drive motor 1, and connecting on air duct 6 both sides has some bolt connecting holes, so that the follow-up assembling of the braking resistor unit that need cool off with front end intake duct and back segment.
Embodiment 2
Big flow high aspect ratio leaf type propeller fan, basic structure is identical with embodiment 1, impeller blade 5 adopts 10 in this example, blade all adopts the high aspect ratio blade, average aspect ratio 2, blade 5 blade root established angles are 25 °, blade and tenon joint rounding, chamfer radius 10m is welded with the uniform thickness dunnage 3 that 3 (three groups) have guide functions concurrently between connection air duct 6 and the inside support ring 2.
Big flow high aspect ratio leaf type propeller fan, basic structure is identical with embodiment 1, impeller blade 5 adopts 15 in this example, blade all adopts the high aspect ratio blade, average aspect ratio 3.5, blade 5 blade root established angles are 35 °, blade and tenon joint rounding, chamfer radius 25m is welded with the uniform thickness dunnage 3 that 9 (three groups) have guide functions concurrently between connection air duct 6 and the inside support ring 2.
Claims (6)
1. one kind big flow high aspect ratio blade axial-flow fan, comprise drive motor (1), inside support ring (2), dunnage (3), wheel hub (4), blade (5), connect air duct (6), wheel hub (4) and blade (5) constitute running wheel, are connected the back with drive motor (1) axle and form blower fan core rotatable parts; It is characterized in that: the blade of impeller (5) adopts the blade of 10-15 sheet variable cross section high aspect ratio, and the aspect ratio scope is between 2-4, and the blade angle scope is 25 °-35 °.
2. a kind of big flow high aspect ratio blade axial-flow fan according to claim 1, it is characterized in that: blade and tenon are integral structure, have two groups of bolt connecting holes on the blade root tenon, blade and tenon joint rounding radius are 10-25mm, by being bolted on the wheel hub.
3. a kind of big flow high aspect ratio blade axial-flow fan according to claim 1, it is characterized in that: drive motor is prepended to fans entrance and is fixed on the inside support ring (2), inside support ring (2) and dunnage (2) link to each other and with is connected air duct (6) the formation main flow passage component of blower fan and supporting structure.
4. a kind of big flow high aspect ratio blade axial-flow fan according to claim 1 is characterized in that: the dunnage (3) that the impeller inlet front end is installed adopts Plate Steels such as 3-9 sheet, connects on air duct (6) both sides to have some bolt connecting holes.
5. a kind of big flow high aspect ratio blade axial-flow fan according to claim 1, it is characterized in that: impeller blade (5) adopts 12 forms, blade (5) all adopts the high aspect ratio blade, blade (5) blade root established angle is 31.5 °, blade and tenon joint rounding, chamfer radius 20mm; Connect between air duct (6) and the inside support ring (2) and be welded with 6 uniform thickness dunnages (3) that have guide functions concurrently.
6. a kind of big flow high aspect ratio blade axial-flow fan according to claim 1 is characterized in that: the Ye Dingyu of impeller blade connects the gap that there is 3-10mm in the air duct inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663777 CN203035610U (en) | 2012-12-06 | 2012-12-06 | High flow and high aspect ratio blade axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663777 CN203035610U (en) | 2012-12-06 | 2012-12-06 | High flow and high aspect ratio blade axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035610U true CN203035610U (en) | 2013-07-03 |
Family
ID=48687739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220663777 Expired - Fee Related CN203035610U (en) | 2012-12-06 | 2012-12-06 | High flow and high aspect ratio blade axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047181A (en) * | 2012-12-06 | 2013-04-17 | 大连理工大学 | High-flow axial flow fan with high-aspect-ratio blades |
| CN112065737A (en) * | 2020-09-09 | 2020-12-11 | 上海尚实能源科技有限公司 | Ultrahigh pressure ratio single-stage axial flow compressor based on super-large aspect ratio |
-
2012
- 2012-12-06 CN CN 201220663777 patent/CN203035610U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047181A (en) * | 2012-12-06 | 2013-04-17 | 大连理工大学 | High-flow axial flow fan with high-aspect-ratio blades |
| CN103047181B (en) * | 2012-12-06 | 2015-12-09 | 大连理工大学 | A kind of large discharge high aspect ratio blade axial-flow fan |
| CN112065737A (en) * | 2020-09-09 | 2020-12-11 | 上海尚实能源科技有限公司 | Ultrahigh pressure ratio single-stage axial flow compressor based on super-large aspect ratio |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203453126U (en) | Double-volute centrifugal ventilator for heat dissipation of generator cooling system | |
| CN101963157B (en) | High total pressure large-flow wheel disk side beveling type back-ward impeller fan | |
| CN201284761Y (en) | Axial flow type high pressure ventilator for locomotive | |
| CN203130545U (en) | Novel non-volute draught fan | |
| CN201461536U (en) | Centrifugal blower unit without volute casing for electric vehicle unit integrated cooling module | |
| CN203035610U (en) | High flow and high aspect ratio blade axial flow fan | |
| CN102536857A (en) | Cooling fan for traction converter of high-speed electric locomotive | |
| CN202326413U (en) | Meridian acceleration axial flow cooling ventilation fan for traction electric machine of electric locomotive | |
| CN103047181B (en) | A kind of large discharge high aspect ratio blade axial-flow fan | |
| CN203374524U (en) | Centrifuging fan set for high speed EMU traction motor cooling | |
| CN103016369B (en) | Novel axial-flow fan with small-aspect-ratio blades having obliquely-cut and twisted blade roots | |
| CN202746240U (en) | Large dark transmission axial-flow type air blower set | |
| CN201363185Y (en) | Axial flow fan of vehicle motor | |
| CN203081787U (en) | D-type multistage high-speed air blower | |
| CN207246069U (en) | A kind of oiling type locomotive traction motor cooling fan | |
| CN214146019U (en) | Efficient ventilator for electric wheel dump truck | |
| CN205064324U (en) | Cooling of EMUs traction motor is with two air -out formula centrifugal fan | |
| CN207920916U (en) | A kind of no scroll casing type cooling blower of low-floor current transformer | |
| CN202597140U (en) | Traction fan for railway track train shunting | |
| CN102717806A (en) | Cooling device for motor train unit | |
| CN202707534U (en) | Front curve type ventilator for electric locomotive composite cooler | |
| CN208294808U (en) | A kind of bilayer EMU traction electric machine cooling blower | |
| CN201884300U (en) | Cooling fan of electric express locomotive traction convertor | |
| CN201650809U (en) | Three-impeller rectifying axial flow fan specially used for subway traction motor brake cooling system | |
| CN201650810U (en) | Three-impeller steady-flow axial flow fan specially used for subway traction motor brake cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20181206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |