CN209654304U - A kind of noise-reduction fan blade - Google Patents
A kind of noise-reduction fan blade Download PDFInfo
- Publication number
- CN209654304U CN209654304U CN201920300862.4U CN201920300862U CN209654304U CN 209654304 U CN209654304 U CN 209654304U CN 201920300862 U CN201920300862 U CN 201920300862U CN 209654304 U CN209654304 U CN 209654304U
- Authority
- CN
- China
- Prior art keywords
- blade
- noise
- denoising structure
- reduction fan
- fan blade
- 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.)
- Active
Links
Abstract
The utility model proposes a kind of noise-reduction fan blade, including blade body, the blade body is outward extended with several blades, the blade is uniformly arranged along the circumferencial direction of the blade body, denoising structure is provided on the blade, the denoising structure reduces noise for hindering vortex.A kind of noise-reduction fan blade of the utility model passes through the denoising structure being arranged on blade, the outer rim of denoising structure and blade is tangent, and perpendicular to suction surface, to hinder the vortex flow from pressure face to suction surface, so that turbulent state substantially reduces, fan overall noise reduces, and on the supercharging effect of outline border almost without influence while reducing vortex, and this noise-reduction fan blade construction is simply suitble to mass production.
Description
Technical field
The utility model relates to reducing fan noise fields, more specifically refer to a kind of noise-reduction fan blade.
Background technique
Due to there is gap between fan blade and outline border, thus fluid can flee to suction surface from pressure face to produce in gap
Raw noise.Prior art way is as follows:
Prior art one: blade outer rim adds ring, but supercharging effect serious loss.
Prior art two: the punching of frame wall destroys tip vortex.
The fluid fled is blocked with an outer ring in blade outer rim, but has seriously undermined the supercharging effect of outline border in this way；
Frame wall is improved, for example is punched, but vortex occurs mainly on blade, so effect is limited.From pressure face to suction
As soon as the noise that the vortex in face generates is the big source of fan noise, if reducing vortex intensity also reduces the noise of fan.
Utility model content
The purpose of the utility model is to overcome defects of the existing technology, provide a kind of noise-reduction fan blade.
To achieve the above object, the utility model uses following technical scheme:
A kind of noise-reduction fan blade, including blade body, the blade body are outward extended with several blades, the blade
It is uniformly arranged along the circumferencial direction of the blade body, denoising structure is provided on the blade, the denoising structure is used for
Vortex is hindered, noise is reduced.
Its further technical solution are as follows: the blade quantity is 7 and the structure of each blade is identical.
Its further technical solution are as follows: the installation direction and installation site of 7 blades correspond to each other setting.
Its further technical solution are as follows: the blade includes suction surface and pressure face, and the denoising structure is set to described
On suction surface, for hindering the vortex from pressure face to suction surface.
Its further technical solution are as follows: the outer rim of the denoising structure and the blade is tangent.
Its further technical solution are as follows: the denoising structure is perpendicular to the suction surface.
Its further technical solution are as follows: the trailing edge of one end of the denoising structure and the blade is adapted, and the other end prolongs
Extend to the head or middle part of the blade.
The beneficial effect of utility model compared with prior art is: a kind of noise-reduction fan blade of the utility model passes through blade
The outer rim of the denoising structure of upper setting, denoising structure and blade is tangent, and perpendicular to suction surface, to hinder from pressure face to suction
The vortex flow in face, so that turbulent state substantially reduces, fan overall noise is reduced, increasing while reducing vortex to outline border
Press effect almost without influence, and this noise-reduction fan blade construction is simply suitble to mass production.
The utility model is further described in the following with reference to the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of noise-reduction fan blade of the utility model；
Fig. 2 is a kind of structural schematic diagram of noise-reduction fan blade of the utility model；
Fig. 3 is the spectrogram of prior art conventional fan；
Fig. 4 is a kind of noise-reduction fan interference diagram of the utility model.
Appended drawing reference
10 blade body, 11 blade
12 denoising structure, 13 suction surface
14 pressure faces
Specific embodiment
In order to more fully understand the technology contents of the utility model, combined with specific embodiments below to the skill of the utility model
Art scheme is further described and illustrates, but not limited to this.
As shown in Figures 1 to 4, a kind of noise-reduction fan blade, including blade body 10, if blade body 10 is outward extended with
Cured leaf piece 11, blade 11 are uniformly arranged along the circumferencial direction of blade body 10, and denoising structure 12, noise reduction are provided on blade 11
Structure 12 reduces noise for hindering vortex.Denoising structure 12 uses so that turbulent state substantially reduces, fan overall noise
It reduces, on the supercharging effect of outline border almost without influence while reducing vortex, and this noise-reduction fan blade construction is simply suitble to
Mass production.
Specifically, as shown in Figure 1 to Figure 2,11 quantity of blade is 7 and the structure of each blade 11 is identical, 11 band of blade
It is gradient.
Specifically, as shown in Figure 1 to Figure 2, the installation direction of 7 blades 11 and installation site correspond to each other setting.
In another specific implementation, the quantity of blade 11 can be a variety of situations such as 4,5,6,8, particular number
It can be configured according to practical application scene.
Specifically, as shown in Figure 1 to Figure 2, blade 11 includes suction surface 13 and pressure face 14, and denoising structure 12 is set to suction
On power face 13, for hindering the vortex from pressure face 14 to suction surface 13.Denoising structure 12 uses so that turbulent state is significant
It reduces, fan overall noise reduces, on the supercharging effect of outline border almost without influence while reducing vortex.
Specifically, as shown in Figure 1 to Figure 2, denoising structure 12 and the outer rim of blade 11 are tangent.
Specifically, as shown in Figure 1 to Figure 2, denoising structure 12 is perpendicular to suction surface 13, to hinder from pressure face 14 to suction
The vortex flow in face 13, to reduce noise.
Specifically, as shown in Figure 1 to Figure 2, the trailing edge of one end of denoising structure 12 and blade 11 is adapted, and the other end extends
To the head or middle part of blade 11.
Specifically, the other end of denoising structure 12 can extend to head, can extend to the middle part of blade 11, can also
To extend at 11 1/3 position of blade or 1/2 position, specific development length can actual conditions be specifically arranged, with to greatest extent
The noise that generates of vortex of the reduction from pressure face 14 to suction surface 13 to reduce the noise of fan.
Specifically, as shown in Figure 3 to Figure 4, using the noise-reduction fan blade with denoising structure, noise reduction effect is obvious,
Its turbulent state substantially reduces, and fan overall noise reduces.
Specifically, this noise-reduction fan blade can be used on the multiple products such as fan, be realized existing functionally more into one
Step reduces noise.
In conclusion a kind of noise-reduction fan blade of the utility model passes through the denoising structure being arranged on blade, denoising structure
It is tangent with the outer rim of blade, and perpendicular to suction surface, to hinder the vortex flow from pressure face to suction surface, so that turbulent state
It substantially reducing, fan overall noise reduces, on the supercharging effect of outline border almost without influence while reducing vortex, and this noise reduction
Fan balde structure is simply suitble to mass production.
The above-mentioned technology contents that the utility model is only further illustrated with embodiment, in order to which reader is easier to understand,
But the embodiments of the present invention is not represented is only limitted to this, any technology done according to the utility model extends or recreation,
By the protection of the utility model.The protection scope of the utility model is subject to claims.
Claims (7)
1. a kind of noise-reduction fan blade, which is characterized in that including blade body, if the blade body is outward extended with cured leaf
Piece, the blade are uniformly arranged along the circumferencial direction of the blade body, and denoising structure, the drop are provided on the blade
Structure of making an uproar reduces noise for hindering vortex.
2. a kind of noise-reduction fan blade according to claim 1, which is characterized in that the blade quantity is for 7 and each
The structure of the blade is identical.
3. a kind of noise-reduction fan blade according to claim 2, which is characterized in that the installation direction of 7 blades and
Installation site corresponds to each other setting.
4. a kind of noise-reduction fan blade according to claim 3, which is characterized in that the blade includes suction surface and pressure
Face, the denoising structure are set on the suction surface, for hindering the vortex from pressure face to suction surface.
5. a kind of noise-reduction fan blade according to claim 4, which is characterized in that the denoising structure and the blade
Outer rim is tangent.
6. a kind of noise-reduction fan blade according to claim 5, which is characterized in that the denoising structure is perpendicular to the suction
Power face.
7. a kind of noise-reduction fan blade according to claim 6, which is characterized in that one end of the denoising structure with it is described
The trailing edge of blade is adapted, and the other end extends to the head or middle part of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300862.4U CN209654304U (en) | 2019-03-08 | 2019-03-08 | A kind of noise-reduction fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300862.4U CN209654304U (en) | 2019-03-08 | 2019-03-08 | A kind of noise-reduction fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209654304U true CN209654304U (en) | 2019-11-19 |
Family
ID=68526631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920300862.4U Active CN209654304U (en) | 2019-03-08 | 2019-03-08 | A kind of noise-reduction fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209654304U (en) |
-
2019
- 2019-03-08 CN CN201920300862.4U patent/CN209654304U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204610038U (en) | The heat insulation drag reducting cowling structure of a kind of support case support plate | |
| CN209654304U (en) | A kind of noise-reduction fan blade | |
| CN204921480U (en) | Centrifugal compressor model level | |
| CN207004920U (en) | Axial flow blower 3 d impeller with leaf vein texture and circular arc post splitterr vanes | |
| CN102889237B (en) | Blade wheel with large blades and small blades applying front edges with sharp corners and air compressor | |
| CN107725478A (en) | Fan blade and fan | |
| CN103016408B (en) | A kind of one-dimensional linear hollow guide vane | |
| CN101892945A (en) | Wind turbine blade | |
| CN103939392B (en) | Axial flow fan blade and air conditioner provided with same | |
| CN202646156U (en) | Double-tongue volute-casing centrifugal pump | |
| CN205013374U (en) | Silence structure of fan blade | |
| CN204283893U (en) | A kind of fixed structure of leaf spring | |
| CN103939150B (en) | Stationary blade structure lowering turbine stage air flow exciting force | |
| CN1313737C (en) | Anti-surge ring of axial fan | |
| CN205401248U (en) | Tooth -like transmission centrifugal compressor diffuser | |
| CN211145277U (en) | Pulley wheel | |
| CN205078497U (en) | Centrifugal fan single face machine airfoil fan | |
| CN204646781U (en) | A kind of aft-fan of motor | |
| CN210738907U (en) | Vortex pump impeller | |
| CN205895682U (en) | Impeller | |
| CN201401312Y (en) | Rotary flow deflector of compressed air filter | |
| CN207660646U (en) | The turbine rotor shaft of oil-stain-preventing adhesion | |
| CN205173060U (en) | Become oar driver protection casing | |
| CN203308778U (en) | Wind wheel | |
| CN208268117U (en) | A kind of exit guide vane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |