CN205744586U - Fan blade - Google Patents
Fan blade Download PDFInfo
- Publication number
- CN205744586U CN205744586U CN201620438503.1U CN201620438503U CN205744586U CN 205744586 U CN205744586 U CN 205744586U CN 201620438503 U CN201620438503 U CN 201620438503U CN 205744586 U CN205744586 U CN 205744586U
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- blade
- wheel hub
- fan
- root
- fan blade
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Abstract
The utility model discloses the aluminium alloy matter fan blade of a kind of industrial electric fan, including a wheel hub and at least two blade；Each blade is strip aluminium alloy matter sheet metal, and its blade face is space circle cambered surface；Each blade has two ends and two long limits, and an end is narrow, for the root of this blade, is connected with this wheel hub respectively by the root of this at least two blade, and this at least two blade ring is arranged on around wheel hub woundly；Another end of this blade is roomy, for the end of this blade；Two long limits of this blade bend in the same direction, and the cross section of blade is airfoil.The cross section of blade of the present utility model is airfoil, and blade is the roomy knife-edge shape that cuts into a mountain, and blade face is space circle cambered surface, and blade can cut air effectively, is suitable for air flow property so that electric fan energy low noise, air quantity is big, wind-force is soft.
Description
Technical field
This utility model relates to a kind of industrial electric fan technical field, particularly relates to a kind of wind on industrial electric fan
Leaf.
Background technology
Industrial electric fan is to be formed by unit constructions such as motor, wind net, fan blade and supports, is that one utilizes motor to drive
Wind symptom leaf rotates, and reaches the electrical equipment making air accelerate flowing, is mainly used in cooling and heatstroke-eliminating and ventilation.
There is the defects such as noise is big, air quantity is little in industrial electric fan the most on the market, and the wind of blowout is violent again, feels to people
By very uncomfortable, these problems mainly leaf blade structure, shape cause.Can not meet low to industrial electric fan of client
The use requirement that noise, air quantity are big, wind-force is soft.
Utility model content
For above-mentioned technical problem, this utility model provides a kind of low noise, air quantity is big, wind-force is soft and beautiful outline form
Sense, the fan blade of smooth industrial electric fan.
This utility model solves this technical problem and be the technical scheme is that the aluminium alloy matter wind of a kind of industrial electric fan
Leaf, including a wheel hub and at least two blade；Each blade is strip aluminium alloy matter sheet metal, and its blade face is space circular arc
Face；Each blade has two ends and two long limits, and an end is narrow, for the root of this blade, by this at least two
The root of blade is connected with this wheel hub respectively, and this at least two blade ring is arranged on around wheel hub woundly；This blade another
One end is roomy, for the end of this blade；Two long limits of this blade bend in the dimension in vane plate face in the same direction, and blade
Cross section be airfoil, i.e. middle part is thicker than both sides.
Specifically, this blade is three-dimensional sweepforward knife-edge wing blade profile, the cross section arc of the end of the root of this blade to blade
Line chord length is broadened by narrow, narrow outer wide blade profile in being formed；Blade profile center is along with the increase of cross-sectional distribution radius, relative vane
Root radial reference line offset to fan blade direction of rotation, and side-play amount progressively strengthens along with radius increase, thus forms sweepforward
Blade profile；Blade profile setting angle increases along with blade profile distribution radius and gradually reduces, thus forms three-dimensional twisted blade profile.
Blade surface shape designs arc chord angle at the wedge angle position of the end of blade.
Specifically, the root of this each blade is fixing with the lateral wall of this wheel hub is connected.
Further, these three blades are angularly circumferentially positioned at around this wheel hub.
Further, this wheel hub is cylinder table or the revolving body of arbitrary surface shape, and one bottom surface is closed by baffle plate, its another
Dissipate rib on bottom surface from the center of circle, and the convergent point of rib is provided with an installing hole.
Specifically, a diameter of 450mm～850mm of fan blade.
Specifically, the thickness of this blade middle part is 1～3 times of thickness of any side.
This utility model uses aluminium alloy compression casting molding, makes simple, and production efficiency is high, and yield is big.
Compared with prior art, the beneficial effects of the utility model are: the cross section of blade of the present utility model is wing
Shape, blade is the roomy knife-edge shape that cuts into a mountain, and blade face is space circle cambered surface, and blade can cut air effectively, is suitable for air flowing
Property so that electric fan energy low noise, air quantity is big, wind-force is soft.
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model (front view).
Fig. 2 is structural representation of the present utility model (rearview).
Fig. 3 is structural representation of the present utility model (right view).
Fig. 4 is the cross sectional representation of blade of the present utility model.
Fig. 5 is the blade profile center of the present utility model side-play amount schematic diagram relative to blade root radial reference line.
Fig. 6 is blade profile setting angle schematic diagram of the present utility model.
Fig. 7 is this utility model assembling schematic diagram (right view) in Industrial fan.
Fig. 8 is this utility model assembling schematic diagram (front view) in Industrial fan.
Detailed description of the invention
As Figure 1-Figure 8, the fan blade of this utility model industrial electric fan, including a wheel hub 12 and three blades 11.
Wheel hub 12 is cylinder table, and one bottom surface is closed by baffle plate, and its another bottom surface dissipates many rib 123 from the center of circle,
And the convergent point of multiple rib 123 is provided with an installing hole 125.The one side being provided with installing hole 125 of wheel hub 12 and industrial electric fan
Motor power transmission shaft connect.The sidewall of wheel hub 12 is provided with multiple screwed hole, is fixed blade by installing screw.
Blade 11 is substantially aluminium alloy matter sheet metal in knife-like of cutting into a mountain, is respectively provided with two ends and two long limits.Leaf
The root that one end is blade 11 112 of sheet 11 relative narrower, the other end of blade 11 is the end 118 of blade 11.Blade 11
Two long limits bend in the dimension in the plate face of blade 11 in the same direction, respectively the outer arc limit 114 of excurvation and the inner arc limit of inflection
116。
The parts that blade 11 is blown to a direction as cutting air, blade face indent, in space circle cambered surface, and, leaf
Sheet 11 is that thick middle both sides are thin, i.e. its cross section is airfoil, and the thickness of blade 11 middle part is any side (outer arc limit 114
Or inner arc limit 116) 1～3 times of thickness.This airplane wing-shaped fan blade blade design, can reduce fan blade blade tip cutting air contact
Area, after cutting, air flows along airplane wing-shaped fan blade blade face, and the air drag of generation is little, and Aerodynamic Flows performance is good, makes an uproar
Low voice.
The root 112 of blade 11 is fixing with the lateral wall of wheel hub 12 to be connected.
Preferably, three blades 11 are angularly circumferentially positioned at around wheel hub 12.
The end 118 of blade 11 is roomy.This roomy leaf blade designs, and drives air contact area big, and air is cut
After cutting, flowing along large-area fan blade blade face, in the case of same air quantity, the torsional angle of blade is relatively small, then pressurization time
Relatively long, increase pressure more slow, wind just becomes soft.
Specifically, this utility model uses aluminium alloy compression casting molding, makes simple, and production efficiency is high, and yield is big.
Preferably, fan blade diameter of the present utility model has 450mm～850mm.
Wherein, shown in Fig. 5, L1 < L2 < L3 < L4.
Wherein, shown in Fig. 6, angle a < angle b.
Other structure of the present utility model is with reference to prior art.
This utility model is installed: industrial electric fan includes fan blade of the present utility model, blade cover, motor 4, column 5
With base 6.Motor 4 is supported by column 5, and column 5 is arranged on base 6.The moving axis of motor 4 connects with the hub drive of fan blade
Connect, thus motor drives fan blade to rotate.Blade cover is located at outside fan blade.Blade cover is mutually tied by front blade cover 2 and rear blade cover 3
Close and form latticed cover body.
During use, fan blade of the present utility model is arranged on industrial electric fan, by motor 4 hot-wire coil at magnetic
Stress in Chang and rotate, electric energy is converted into mechanical energy, drives fan blade to rotate.
Compared with prior art, the cross section of the blade of fan blade of the present utility model is airfoil, and blade is roomy opening
Mountain knife-edge shape, blade face is space circle cambered surface, and blade can cut air effectively, is suitable for air flow property so that electric fan can be low
Noise, air quantity are big, wind-force is soft.
This utility model is not limited to above-mentioned embodiment, if do not taken off various changes of the present utility model or modification
From spirit and scope of the present utility model, if these are changed and modification belongs to claim of the present utility model and equivalent technologies
Within the scope of, then this utility model is also intended to comprise these change and modification.
Claims (7)
1. a fan blade, it is characterised in that: include a wheel hub and at least two blade；Each blade is strip aluminium alloy matter gold
Belong to sheet, and its blade face is space circle cambered surface；Each blade has two ends and two long limits, and an end is narrow, for this leaf
The root of sheet, is connected with this wheel hub respectively by the root of this at least two blade, and this at least two blade ring is arranged woundly
Around wheel hub；Another end of this blade is roomy, for the end of this blade；Two long limits of this blade are in vane plate face
Dimension in bend in the same direction, and the cross section of blade is airfoil.
2. fan blade as claimed in claim 1, it is characterised in that: this blade is three-dimensional sweepforward knife-edge wing blade profile, the root of this blade
Portion broadens to the cross-sectional curve chord length of the end of blade by narrow, narrow outer wide blade profile in being formed；Blade profile center is along with cross section
The increase of distribution radius, the root radial reference line of relative vane offsets to fan blade direction of rotation, and side-play amount is along with radius increasing
Add and progressively strengthen, thus form forward swept blades；Blade profile setting angle increases along with blade profile distribution radius and progressively subtracts
Few, thus form three-dimensional twisted blade profile；Blade surface shape designs arc chord angle at the wedge angle position of the end of blade.
3. fan blade as claimed in claim 2, it is characterised in that: the root of this each blade is fixing with the lateral wall of this wheel hub to be connected
Blade.
4. fan blade as claimed in claim 3, it is characterised in that: it has three blades, and these three blades are angularly around setting
Put around wheel hub.
5. fan blade as claimed in claim 4, it is characterised in that: this wheel hub is cylinder table, and one bottom surface is closed by baffle plate, its another
Dissipate rib on bottom surface from the center of circle, and the convergent point of this rib is provided with an installing hole.
6. fan blade as claimed in claim 1, it is characterised in that: a diameter of 450mm～850mm of described fan blade.
7. fan blade as claimed in claim 1, it is characterised in that: the thickness of this blade middle part is the 1～3 of the thickness of any side
Times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438503.1U CN205744586U (en) | 2016-05-12 | 2016-05-12 | Fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438503.1U CN205744586U (en) | 2016-05-12 | 2016-05-12 | Fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744586U true CN205744586U (en) | 2016-11-30 |
Family
ID=57365960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620438503.1U Active CN205744586U (en) | 2016-05-12 | 2016-05-12 | Fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744586U (en) |
-
2016
- 2016-05-12 CN CN201620438503.1U patent/CN205744586U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |