CN203189332U - Fan blade and fan - Google Patents
Fan blade and fan Download PDFInfo
- Publication number
- CN203189332U CN203189332U CN 201320165385 CN201320165385U CN203189332U CN 203189332 U CN203189332 U CN 203189332U CN 201320165385 CN201320165385 CN 201320165385 CN 201320165385 U CN201320165385 U CN 201320165385U CN 203189332 U CN203189332 U CN 203189332U
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- fan
- blade
- fan blade
- wheel hub
- grid
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Abstract
A fan blade comprises blades and a wheel hub which is connected with an output shaft of a motor in a linkage mode. The blades are arranged on the wheel hub in a scattering shape. Saw tooth grooves are formed in the front edges of the blades. The depth of the saw tooth grooves is 5-10mm. The utility model further provides a fan using the fan blade. Due to the design of the saw tooth grooves in the blades, losses of vortexes at outlets of the blades are effectively reduced, so that the fan reasonably avoids a surging area when running and the aerodynamic performance of the blades is improved. At the same rotation speed, the fan blade can be made to be lower in noise, larger in flow and higher in static pressure (longer air-out distance) and therefore the fan blade saves energy better.
Description
Technical field
The utility model relates to fan art, relates in particular to a kind of fan blade and uses the fan of this fan blade.
Background technique
Electric fan be a kind of be that it has cheap with household electrical appliances very widely, characteristics easy to use are subjected to people's popular welcome, but along with the raising day by day of living standard, people are also more and more higher to novelty and the intelligentized requirement of electric fan.
The fan blade of desk fan on the market generally adopts smooth airflow design at present, because when this fan moves, malleation and negative pressure that the windward side of fan blade and lee face produce, promote flowing of air, when particularly rotating speed is higher, at middle part and the bigger eddy current of afterbody generation of fan blade, increase the friction between wind and the fan blade, flow loss increases, and has also increased the load of motor, and noise is higher simultaneously.
The model utility content
The purpose of this utility model is to provide a kind of fan blade of reasonable in design, simple in structure, energy-efficient, low noise and uses the fan of this fan blade.
For solving the problems of the technologies described above, the utility model provides a kind of fan blade, comprises the wheel hub that blade reaches and the output shaft of motor links, and described blade is being arranged on the wheel hub of divergent shape, the leading edge of described blade offers serrated slot, and the degree of depth of described serrated slot is 5-10mm.
For strengthening the acting ability of fan blade, the utility model improves to be had, and the angle of the radial plane of described blade and wheel hub rotatingshaft is 35 °.
For the air-flow that produces is effectively cut, the utility model improves to be had, and described blade is increased gradually by the serrated slot degree of depth of root to the top.
For reducing air-flow in the collision of air intake surface and outlet air surface intersection, the utility model improves to be had, and is extended with groove from serrated slot to the trailing edge direction on the windward side of described blade.
The utility model further provides a kind of fan, comprise fan assembly and the electrically-controlled component that fan assembly is controlled, described fan assembly comprises grid behind grid before the fan blade, fan blade, the fan blade, motor, motor housing, fan blade is arranged on the motor shaft, grid is fixed in motor housing behind the fan blade, grid is fixed on behind the fan blade on the grid before the fan blade, described fan blade comprises the wheel hub that blade reaches and the output shaft of motor links, described blade is being arranged on the wheel hub of divergent shape, the leading edge of described blade offers serrated slot, and the degree of depth of described serrated slot is 5-10mm.
The utility model improves to be had, and the angle of the radial plane of described blade and wheel hub rotatingshaft is 35 °.
The utility model improves to be had, and described blade is increased gradually by the serrated slot degree of depth of root to the top.
The utility model improves to be had, and is extended with groove from serrated slot to the trailing edge direction on the windward side of described blade.
The utility model improves to be had, and the material of grid is metal or plastics behind the preceding grid of described fan blade and the fan blade.
The beneficial effects of the utility model are: the fan blade of new structure and fan, by the zigzag fashion of blade and the design of groove, effectively reduce the eddy-currents loss at blade exit place, can reasonably avoid surge area when making operation, improve the aerodynamic quality of blade, can make fan blade when identical rotating speed, have lower noise, bigger flow and the static pressure of Geng Gao (farther air-out distance), therefore also more energy-conservation.
Description of drawings
Accompanying drawing 1 is the structural representation of fan blade of the present utility model;
Accompanying drawing 2 is the structural representation of fan of the present utility model.
Label declaration: 1-fan blade; The 11-blade; The 12-wheel hub; The 13-serrated slot; The 14-groove; Grid before the 2-fan blade; Grid behind the 3-fan blade; The 4-motor; 5 motor housings.
Embodiment
By describing technology contents of the present utility model, structure characteristics in detail, realized purpose and effect, give explanation below in conjunction with mode of execution and conjunction with figs. are detailed.
See also Fig. 1, a kind of fan blade 1 that the utility model provides shown in the accompanying drawing, comprise the wheel hub 12 that blade 11 reaches and the output shaft of motor 4 links, described blade 11 is being arranged on the wheel hub 12 of divergent shape, the leading edge of described blade 11 offers serrated slot 13, and the degree of depth of described serrated slot 13 is 5-10mm.
Whole blade 11 be shaped as sickleshaped, according to becoming circular rector negative exponent flow pattern, high coefficient of lift combined design, blade 11 external forms are that sickle shaped is wide outside and narrow inside, the three dimensional space distorted shape, quantity is not done concrete restriction at the utility model, blade 11 quantity in the present embodiment are 5, the trailing edge of blade 11 is offered serrated slot 13, under equal air quantity, reduce fan noise, the maelstrom cutting that wind outlet is produced is carded to countless little eddy current, on the other hand, to viscosity gas type effectively separate, leading role, and finally become desirable air-flow.
On the other hand, because when fan blade 1 rotated, more away from blade root, the air-flow of generation was more big, therefore the degree of depth of the serrated slot 13 that arranges is increased gradually by the degree of depth of root to the top, is convenient to the air-flow that produces is rolled into a ball more effective cutting; When fan blade 1 rotation, less near the air-flow of blade root, separate by more shallow indentation cutting, bigger away from the air-flow group of blade root, cut into little eddy current by darker indentation, realized big gap cutting speed air flow group.Low speed little airflow group is cut in little gap; By so dry straight the superior and the subordinate's air-flow of having avoided in conjunction with being that the eddyloss that the collision of air-flow causes takes place, thereby reach the purpose of noise reduction.
In the present embodiment, described blade 11 is 35 ° with the angle of the radial plane of wheel hub 12 rotatingshafts, and wherein the control of the difference of internal diameter established angle is between ± 2 degree.
In the present embodiment, be extended with groove 14 from serrated slot to the trailing edge direction on the windward side of described blade 11, in the present embodiment, the quantity of groove 14 is 3 roads, when blade 11 rotations were used, air-flow can flow from blade 11 grooves 14, reduces air-flow in the collision of air intake surface and outlet air surface intersection.
The utility model further provides a kind of fan, with reference to accompanying drawing 2, accompanying drawing 2 is example with the bracker fan, described fan comprises fan assembly and the electrically-controlled component that fan assembly is controlled, described fan assembly comprises fan blade 1, grid 2 before the fan blade, grid 3 behind the fan blade, motor 4, motor housing 5, fan blade 1 is arranged on 4 in the motor, grid 3 is fixed in motor housing 5 behind the fan blade, grid 2 is fixed on behind the fan blade on the grid 3 before the fan blade, described fan blade 1 comprises the wheel hub 12 that blade 11 reaches and the output shaft of motor 4 links, described blade 11 is being arranged on the wheel hub 12 of divergent shape, the leading edge of described blade 11 offers serrated slot 13, and the degree of depth of described serrated slot 13 is 5-10mm.
Said fans can be any fan, for example bracker fan and stand fan.
In the present embodiment, described blade 11 is 35 ° with the angle of the radial plane of wheel hub 12 rotatingshafts.
In the present embodiment, described blade 11 is increased gradually by serrated slot 13 degree of depth of root to the top.
In the present embodiment, be extended with groove 14 from serrated slot to the leading edge direction on the lee face of described blade 11.
Concrete, grid 3 is used for protection behind the preceding grid 2 of fan blade and the fan blade, motor 4 adopts direct current generator 4, can carry out the control of stepless speed regulation or many gears, powered operation along with motor 4, drive the rotating operation of fan blade 1 after 4 rotations of motor, air grid 3 behind the fan blade is entered, grid 2 blows out before the fan blade.
Electrically-controlled component is positioned at column inside, its working principle: electrically-controlled component is used for the work of control motor 4, fan has many grades of wind speed, motor 4 can divide multiple gear operation according to different rotating speeds, can be by remote control, button or button, knob mode, select the gear of different motors 4, and have the time switch function.
In the present embodiment, the material of grid 3 is metal or plastics behind the preceding grid 2 of described fan blade and the fan blade.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. a fan blade is characterized in that, comprises the wheel hub that blade reaches and the output shaft of motor links, and described blade is being arranged on the wheel hub of divergent shape, and the leading edge of described blade offers serrated slot, and the degree of depth of described serrated slot is 5-10mm.
2. fan blade according to claim 1 is characterized in that, the angle of the radial plane of described blade and wheel hub rotatingshaft is 35 °.
3. fan blade according to claim 1 is characterized in that, described blade is increased gradually by the serrated slot degree of depth of root to the top.
4. fan blade according to claim 1 is characterized in that, is extended with groove from serrated slot to the trailing edge direction on the windward side of described blade.
5. fan, comprise fan assembly and the electrically-controlled component that fan assembly is controlled, it is characterized in that, described fan assembly comprises grid behind grid before the fan blade, fan blade, the fan blade, motor, motor housing, fan blade is arranged on the motor shaft, grid is fixed in motor housing behind the fan blade, grid is fixed on behind the fan blade on the grid before the fan blade, described fan blade comprises the wheel hub that blade reaches and the output shaft of motor links, described blade is being arranged on the wheel hub of divergent shape, the leading edge of described blade offers serrated slot, and the degree of depth of described serrated slot is 5-10mm.
6. fan according to claim 5 is characterized in that, the angle of the radial plane of described blade and wheel hub rotatingshaft is 35 °.
7. fan according to claim 5 is characterized in that, described blade is increased gradually by the serrated slot degree of depth of root to the top.
8. fan according to claim 5 is characterized in that, is extended with groove from serrated slot to the trailing edge direction on the windward side of described blade.
9. fan according to claim 5 is characterized in that, the material of grid is metal or plastics behind the preceding grid of described fan blade and the fan blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320165385 CN203189332U (en) | 2013-04-03 | 2013-04-03 | Fan blade and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320165385 CN203189332U (en) | 2013-04-03 | 2013-04-03 | Fan blade and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189332U true CN203189332U (en) | 2013-09-11 |
Family
ID=49106194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320165385 Expired - Fee Related CN203189332U (en) | 2013-04-03 | 2013-04-03 | Fan blade and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189332U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687693A (en) * | 2014-09-18 | 2017-05-17 | 株式会社电装 | Blower |
| CN107178524A (en) * | 2017-05-22 | 2017-09-19 | 奥克斯空调股份有限公司 | A kind of wing shaped low noise axial-flow leaf |
| CN108167224A (en) * | 2017-12-27 | 2018-06-15 | 泛仕达机电股份有限公司 | It is a kind of that the blade of multilayer denoising structure and the fan including the blade are set |
| US20190024671A1 (en) * | 2017-07-21 | 2019-01-24 | United Technologies Corporation | Processes and tooling associated with coating application |
| CN112431798A (en) * | 2020-11-23 | 2021-03-02 | 吉林大学 | Low-noise rotating-static fan system |
| CN112727793A (en) * | 2021-01-11 | 2021-04-30 | 泛仕达机电股份有限公司 | Blade with bionic front edge and axial flow wind wheel comprising blade |
-
2013
- 2013-04-03 CN CN 201320165385 patent/CN203189332U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687693A (en) * | 2014-09-18 | 2017-05-17 | 株式会社电装 | Blower |
| CN107178524A (en) * | 2017-05-22 | 2017-09-19 | 奥克斯空调股份有限公司 | A kind of wing shaped low noise axial-flow leaf |
| US20190024671A1 (en) * | 2017-07-21 | 2019-01-24 | United Technologies Corporation | Processes and tooling associated with coating application |
| CN108167224A (en) * | 2017-12-27 | 2018-06-15 | 泛仕达机电股份有限公司 | It is a kind of that the blade of multilayer denoising structure and the fan including the blade are set |
| CN112431798A (en) * | 2020-11-23 | 2021-03-02 | 吉林大学 | Low-noise rotating-static fan system |
| CN112431798B (en) * | 2020-11-23 | 2021-08-10 | 吉林大学 | Low-noise rotating-static fan system |
| CN112727793A (en) * | 2021-01-11 | 2021-04-30 | 泛仕达机电股份有限公司 | Blade with bionic front edge and axial flow wind wheel comprising blade |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20180403 |