CN205744592U - A kind of fan blade in multi-wing centrifugal fan - Google Patents
A kind of fan blade in multi-wing centrifugal fan Download PDFInfo
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- CN205744592U CN205744592U CN201620076052.1U CN201620076052U CN205744592U CN 205744592 U CN205744592 U CN 205744592U CN 201620076052 U CN201620076052 U CN 201620076052U CN 205744592 U CN205744592 U CN 205744592U
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- cambered surface
- blade body
- bionic
- fan
- blade
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Abstract
The utility model discloses the fan blade in a kind of multi-wing centrifugal fan, including some blade body, the both ends of the surface of blade body are cambered surface, wherein, for being provided with zigzag structure in one cambered surface of blade body, another cambered surface of blade body is provided with bionic, non-smooth structure, air-flow after described bionic, non-smooth structure again through described zigzag structure.This utility model can be effectively reduced noise, improve air quantity, increase blast.
Description
Technical field
This utility model relates to a kind of fan blade, is specifically related to the wind in a kind of multi-wing centrifugal fan
Machine blade.
Background technology
Multi-wing centrifugal fan has that discharge coefficient is big, pressure coefficient is high and the feature such as compact conformation,
Obtaining extensive application in industrial products, the blower fan overwhelming majority of current lampblack absorber industry all uses multiple wing
Centrifugal blower, is the most also widely used in domestic air conditioner.Live closely bound up with people
Air-conditioner and the noise of range hood and efficiency become the big performance indications of two received much attention.At present
The chord length straight blade impeller structures such as the many employings of multi-wing centrifugal fan, as it is shown in figure 1, i.e. vane inlet
Edge is with to go out peristoma parallel with impeller axis, identical along each cross sectional shape of spanwise, size, this
The pressure coefficient of linear type impeller below 0.5, pressure under the same conditions use high rotating speed or
The big impeller diameter of person could realize, and increase impeller diameter and receive the restriction in space, improves rotating speed
Increase again noise.Secondly, this vane inlet established angle is on all each points in entry impeller edge
It is identical, and at this, air velocity is uneven, thus makes all each points on vane edge
On air-flow impeller is caused big large impact, decrease the service life of impeller, and make an uproar with big
Sound；And at the air outlet of sheet, due to flow blockage, easily form eddy current, affect blower fan air-out,
Make the inefficiency of blower fan, and due to the existence of whirlpool, increase the eddy current crack of blower fan, because of
This, the chord length straight blade impeller structure such as employing, make the efficiency of impeller be substantially reduced, current fume-exhausting
The efficiency of machine all ratios are relatively low, and only about about 25%, and range hood and air-conditioner are by extensively
It is applied to daily life, the most energy-conservation seems the most necessary.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, it is provided that a kind of multiple wing
Fan blade in centrifugal blower, this fan blade can be effectively reduced noise, improve air quantity,
Increase blast.
Fan blade bag for reaching above-mentioned purpose, in multi-wing centrifugal fan described in the utility model
Including some blade body, the both ends of the surface of blade body are cambered surface, wherein, and of blade body
For being provided with zigzag structure in cambered surface, another cambered surface of blade body is provided with bionic, non-smooth knot
Structure, air-flow after described bionic, non-smooth structure again through described zigzag structure.
Described bionic, non-smooth structure is wavy shaped configuration.
In described zigzag structure, the angle between adjacent two teeth is 30-50 °.
In described zigzag structure, the height of each tooth is 0.4mm-2mm.
In described bionic, non-smooth structure, the height of each crest is 0.2mm-0.8mm.
In described bionic, non-smooth structure, the spacing between adjacent two troughs is 3mm-7mm.
The cambered surface of blade body is provided with two groups of zigzag structures, and described two groups of zigzag structures are positioned at
The both sides of corresponding cambered surface.
The cambered surface of blade body is provided with two groups of bionic, non-smooth structures, described two groups of bionic, non-smooths
Structure is positioned at the both sides of corresponding cambered surface.
This utility model has the advantages that
Fan blade in multi-wing centrifugal fan described in the utility model includes blade body, described
The both ends of the surface of blade body are cambered surface, so that the cross section that blade body is vertically is different, subtract
The deflection of few inlet air flow and impact loss, reduce the friction at gas channel leading inlet and damage
Become estranged the obstruction of leaf road import, make import flow section overdraught velocity gradient be evenly distributed simultaneously,
And make air velocity adapt to the Rapid Variable Design from fan blade top to bottom during turning, from
And reduce the separation loss that leaf road is bent to form, reduce impeller tip exit swirl and Secondary Flow, change
Kind air inlet flowing, reduces turbulence noise, improves centrifugal blower efficiency.It addition, described blade body
A cambered surface be provided with zigzag structure, it is possible to reduce at blade air outlet owing to flow blockage is raw
The eddy current become, can slacken the intensity of eddy current simultaneously, improve the air-flow flowing at Ye Daonei；Described
Another cambered surface of blade body is provided with bionic, non-smooth structure, it is possible to slacken the reflection of sound wave,
Reduce the eddy current that fan blade entrance region is formed, improve the air inlet flowing of air-flow, slacken air-flow to wind
The impact of machine blade inlet edge, reduces the noise of centrifugal blower.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing fan blade.
Fig. 2 is structural representation of the present utility model；
Fig. 3 is partial enlarged drawing in this utility model；
Fig. 4 is the structural representation of existing multi-wing centrifugal fan；
Fig. 5 is the structural representation of the multi-wing centrifugal fan in the present invention.
Wherein, 1 be blade body, 2 be bionic, non-smooth structure, 3 for zigzag structure.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
With reference to Fig. 2, the fan blade in multi-wing centrifugal fan described in the utility model includes some
Blade body 1, the both ends of the surface of blade body 1 are cambered surface, wherein, of blade body 1
For being provided with zigzag structure 3 in cambered surface, another cambered surface of blade body 1 is provided with bionical non-light
Slipped Clove Hitch structure 2, air-flow after described bionic, non-smooth structure 2 again through described zigzag structure 3, sawtooth
In shape structure 3, the angle between adjacent two teeth is 30 °-50 °, each tooth in zigzag structure 3
Being highly 0.4mm-2mm, in bionic, non-smooth structure 2, the height of each crest is
0.2mm-0.8mm, in bionic, non-smooth structure 2, the spacing between adjacent two troughs is
3mm-7mm, the cambered surface of blade body 1 is provided with two groups of zigzag structures 3, described two groups of sawtooth
Shape structure 3 is positioned at the both sides of corresponding cambered surface, and the cambered surface of blade body 1 is provided with two groups of bionical non-light
Slipped Clove Hitch structure 2, described two groups of bionic, non-smooth structures 2 are positioned at the both sides of corresponding cambered surface, bionical non-light
Slipped Clove Hitch structure 2 is wavy shaped configuration.
Through experiment, use multi-wing centrifugal fan of the present utility model and traditional multi-wing centrifugal fan phase
Ratio, air quantity improves more than 5%, and blast improves more than 6%, and noise reduces more than 0.5dB, according to
Power P=the Q*B of centrifugal blower shows, uses the efficiency of multi-wing centrifugal fan of the present utility model more
Height, wherein, B is the full blast pressure of blower fan, and Q is air quantity.It addition, simple in construction of the present utility model,
Low cost of manufacture, can significantly alleviate the weight of impeller, thus improve the driving motor of centrifugal blower
Work efficiency, the motor that therefore can match lower-wattage just can meet original multi-wing centrifugal wind
The demand of machine, energy-conserving and environment-protective.
Claims (3)
1. the fan blade in a multi-wing centrifugal fan, it is characterized in that, including some blade body (1), the both ends of the surface of blade body (1) are cambered surface, wherein, for being provided with zigzag structure (3) in one cambered surface of blade body (1), another cambered surface of blade body (1) is provided with bionic, non-smooth structure (2), air-flow after described bionic, non-smooth structure (2) again through described zigzag structure (3)；
Described bionic, non-smooth structure (2) is wavy shaped configuration；
In described bionic, non-smooth structure (2), the height of each crest is 0.2mm-0.8mm；
In described bionic, non-smooth structure (2), the spacing between adjacent two troughs is 3mm-7mm；
The cambered surface of blade body (1) is provided with two groups of zigzag structures (3), and described two groups of zigzag structures (3) are positioned at the both sides of corresponding cambered surface；
The cambered surface of blade body (1) is provided with two groups of bionic, non-smooth structures (2), and described two groups of bionic, non-smooth structures (2) are positioned at the both sides of corresponding cambered surface.
Fan blade in multi-wing centrifugal fan the most according to claim 1, it is characterised in that in described zigzag structure (3), the angle between adjacent two teeth is 30 °-50 °.
Fan blade in multi-wing centrifugal fan the most according to claim 1, it is characterised in that in described zigzag structure (3), the height of each tooth is 0.4mm-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620076052.1U CN205744592U (en) | 2016-01-26 | 2016-01-26 | A kind of fan blade in multi-wing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620076052.1U CN205744592U (en) | 2016-01-26 | 2016-01-26 | A kind of fan blade in multi-wing centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744592U true CN205744592U (en) | 2016-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620076052.1U Expired - Fee Related CN205744592U (en) | 2016-01-26 | 2016-01-26 | A kind of fan blade in multi-wing centrifugal fan |
Country Status (1)
| Country | Link |
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| CN (1) | CN205744592U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980101A (en) * | 2018-08-02 | 2018-12-11 | 江苏大学镇江流体工程装备技术研究院 | A kind of bionic blade based on shark surface drag reduction technology |
| CN111079239A (en) * | 2019-12-19 | 2020-04-28 | 中国航空发动机研究院 | Bionic compressor cascade modeling method |
-
2016
- 2016-01-26 CN CN201620076052.1U patent/CN205744592U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980101A (en) * | 2018-08-02 | 2018-12-11 | 江苏大学镇江流体工程装备技术研究院 | A kind of bionic blade based on shark surface drag reduction technology |
| CN108980101B (en) * | 2018-08-02 | 2023-07-04 | 江苏大学镇江流体工程装备技术研究院 | Bionic blade based on shark surface drag reduction technology |
| CN111079239A (en) * | 2019-12-19 | 2020-04-28 | 中国航空发动机研究院 | Bionic compressor cascade modeling method |
| CN111079239B (en) * | 2019-12-19 | 2023-07-21 | 中国航空发动机研究院 | Bionic compressor blade grid modeling method |
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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: 20161130 Termination date: 20180126 |