CN107725478A - Fan blade and fan - Google Patents
Fan blade and fan Download PDFInfo
- Publication number
- CN107725478A CN107725478A CN201711182766.6A CN201711182766A CN107725478A CN 107725478 A CN107725478 A CN 107725478A CN 201711182766 A CN201711182766 A CN 201711182766A CN 107725478 A CN107725478 A CN 107725478A
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- CN
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- Prior art keywords
- blade
- face
- wind
- fan blade
- wind face
- 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.)
- Withdrawn
Links
- 238000005452 bending Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
- F04D29/386—Skewed blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of fans, in particular to a fan blade and a fan, wherein the fan blade comprises: the multi-disc blade of evenly arranging around the rotation center of fan blade, divide into two at least wind faces by a side direction that is close to the rotation center on the blade surface of blade to the one side of keeping away from the rotation center, and separate by recessed fold line between two adjacent wind faces, make two adjacent wind be the contained angle setting, divide into a plurality of wind faces through the one side of keeping away from the rotation center by a side direction that is close to the rotation center on with the blade surface of blade, separate through recessed fold line between the wind face, thereby the wind that produces on the blade wind face because the difference of wind face angle can expand the wind that disperses, and then can reduce the concentration degree of wind speed, the fluctuation range of wind speed has been reduced, and then the noise problem that the wind speed concentrated production has been reduced, user experience has been promoted.
Description
Technical field
The present invention relates to fan technology field, and in particular to a kind of fan blade and fan.
Background technology
As shown in figure 1, the fan blade in fan uses the single fan blade 100 ' of five blade profiles more at present, 100 ' blade profiles of fan blade are certainly
So seamlessly transit, whole fan blade 100 ' has the advantages of simple in construction, manufacture difficulty is small.
But the fan of the above-mentioned fan blade 100 ' of use is in use, air-out is produced by fan blade rotary motion, due to
The problem of blade profile of fan blade is single, causes within some period, wind speed be present and excessively concentrates, and fluctuations in wind speed amplitude is larger, enters
And cause power attenuation in whole fan blade running larger.And used under quiet environment, due to wind speed fluctuating range compared with
Greatly, can also there is the problem of noise is big and lower tone, and Consumer's Experience is bad.
The content of the invention
It is a primary object of the present invention to provide a kind of fan blade and fan, to solve the wind speed of fan in the prior art excessively
Concentrate, the problem of Consumer's Experience is bad.
To achieve the above object, the invention provides a kind of fan blade, including：Pivot around the fan blade is uniformly arranged
More blades, drawn by the side that the pivot is laterally away from close to the one of the pivot on the blade face of the blade
It is divided at least two wind faces, and is separated between the two neighboring wind face by recessed fold line, makes the two neighboring wind face
Set in angle.
Further, the blade face of the blade is divided into main wind face and secondary wind face Liang Gefeng faces, the master by the fold line
Wind face is on the blade face away from the pivot side, and the secondary wind face is on the blade face in the rotation
Heart side, and the angle between the main wind face and the secondary wind face is between 150 degree of -170 degree.
Further, the main wind face and the secondary wind face at the fold line along the gentle mistake of fold line circular arc
Degree.
Further, the main wind face of the blade and the secondary wind face at the fold line towards under the fold line
Recessed, its recessed depth is the 5%-10% of the leaf chord length.
It should be noted that the chord length of blade refers to the company between the leaf tip to blade rear edge 1/3rd of blade
Line.
Further, the position for meeting the leading edge fluid to the adjacent blade on the main wind face is provided with described in avoidance
The avoiding structure of leading edge fluid.
Further, the avoiding structure is the bending being arranged on the main wind face.
Further, the bending angle of the bending is between 5 ° -20 °.
Further, 10%-15% opening position of the bending positioned at the main wind face blade chord length.
It should be noted that the chord length of blade refers to the company between the leaf tip to blade rear edge 1/3rd of blade
Line.
Further, the avoiding structure is the breach to be formed on the main wind face.
Further, the blade includes outer blade and internal layer blade, leads between outer blade and the internal layer blade
Cross vane connection.
Further, the maximum outside diameter ratio of the diameter of the vane and the blade is between 0.575 to 0.625.
The present invention also provides a kind of fan, including fan blade, and the fan blade is fan blade as described above.
Technical solution of the present invention, have the following advantages that：
In fan blade and fan provided by the invention, by being laterally away from the blade face by blade by the one of close pivot
The side of pivot is divided into multiple wind faces, is separated between wind face by recessed fold line so that blade wind produces on face
Wind due to wind face angle degree it is different so as to by wind spread apart, and then the concentration degree of wind speed can be reduced, reduce wind
Speed fluctuating range, and then reduce wind speed concentrate caused by noise problem, improve Consumer's Experience.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the structural representation of fan blade of the prior art；
Fig. 2 is the overlooking the structure diagram of fan blade in the embodiment of the present invention；
Fig. 3 is the dimensional structure diagram of fan blade in the embodiment of the present invention；
Fig. 4 is mplifying structure schematic diagram of the fan blade in Fig. 3 in A portions；
Fig. 5 is mplifying structure schematic diagram of the fan blade in Fig. 3 in B portions.
Wherein, the reference in above-mentioned accompanying drawing is：
100 ', fan blade；
100th, blade；200th, vane；300th, wheel hub；
10th, outer blade；11st, fold line；13rd, main wind face；15th, secondary wind face；17th, leaf tail portion；
30th, internal layer blade.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Embodiment 1
As shown in Figures 2 and 3, the fan blade in the present embodiment includes：Outer blade 10 and internal layer blade as blade 100
30th, for the vane 200 connected between outer blade 10 and internal layer blade 30, and on machine shaft and with it is interior
The wheel hub 300 that layer fan blade is fixedly connected, so because blade 100 has multiple layers of vanes 100, so that it is close not increasing blade 100
The quantity of blade 100 can be improved on the basis of intensity, by increasing capacitance it is possible to increase the continuous and stable of wind, avoid wind speed from excessively concentrating.
Vane 200 plays a function served as bridge, the diameter and leaf of vane 200 between outer blade 10 and internal layer blade 30
The maximum outside diameter ratio of piece 100 is between 0.575 to 0.625 so that outer layer fan blade connects steadily with internal layer fan blade, if diameter
Vane 200 is too small, then inside and outside fan blade can be caused out of proportion, influence it is attractive in appearance, if the diameter of vane 200 is excessive and its unqualified thickness
Reason, then vane 200 can be caused to occupy the increase of fan blade mass ratio, can not only increase the oeverall quality of fan blade, also result in fan blade work(
Rate increases, and reduces fan blade efficiency.
With further reference to Fig. 4, the outer layer fan blade in the present embodiment includes the multi-disc uniformly arranged around the pivot of fan blade
Blade 100, at least two are divided into by the side for being laterally away from pivot close to pivot on the blade face of blade 100
Wind face, and being separated between two neighboring wind face by recessed fold line 11, two neighboring wind face is set to be set in angle, by by leaf
Multiple wind faces are divided into by the side for being laterally away from pivot close to pivot on the blade face of piece 100, between wind face
Separated by recessed fold line 11 so that caused wind is because the difference of wind face angle degree is so as to general on the wind face of blade 100
Wind spread apart, and then the concentration degree of wind speed can be reduced, reduce the fluctuating range of wind speed, and then reduced wind speed and concentrate production
Raw noise problem, improves Consumer's Experience.
More specifically, the blade face of the outer layer fan blade in the present embodiment, which is crimped line 11, is divided into 15 liang of main wind face 13 and secondary wind face
Individual wind face, main wind face 13 are on blade face away from pivot side, and secondary wind face 15 is on blade face close to pivot side,
And the angle between main wind face 13 and secondary wind face 15 is between 150 degree of -170 degree, what so main wind face 13 and secondary wind face 15 were formed
Inclination angle so that major and minor acting area forms a barometric gradient, and wind would not be concentrated, and then be diffused into periphery, and blade face is only
Main wind face 13 and secondary wind face 15 are divided into, and the angle between main wind face 13 and secondary wind face 15 makes between 150 degree of -170 degree
Obtain while realizing that wind-force disperses, resistance when blade 100 rotates will not be excessive, while also avoids manufacture difficulty excessive.
Preferably, the main wind face 13 in the present embodiment is greater than the area in secondary wind face 15, the area in preferably main wind face 13
Account for 2/3rds of whole outer layer fan blade, so while realizing sharp scattered, the size of abatement wind-force that will not be excessively.
Multiple layers of vanes 100 is being used using blade 100, and main wind face 13 and secondary wind face are divided on the blade face of outer layer fan blade
In the case of 15, it is as follows with fan blade of the prior art contrast form：
Multiple layers of vanes 100 is used i.e. in fan blade, and is divided on the blade face of outer layer fan blade main wind face 13 and secondary wind face 15
In the case of, under the premise of rotating speed does not become, the only small lifting of efficiency, and air quantity has obtained larger lifting, noise obtains larger
Reduction.
In an embodiment not shown, the blade face of blade is crimped line and is divided into from pivot by as far as three near wind
Face, the fluctuating range for reducing wind speed in fan blade running can be equally realized, reduce the effect of noise.
In an embodiment not shown, the internal layer fan blade in blade is crimped line and is divided into main wind face and two, secondary wind face wind
Face, main wind face are on blade face away from pivot side, and secondary wind face be on blade face close to pivot side, main wind face with
The inclination angle that secondary wind face is formed so that major and minor acting area forms a barometric gradient, and the scheme of the embodiment equally can be real
The purpose for now avoiding wind speed from concentrating.
With further reference to Fig. 4, main wind face 13 and secondary wind face 15 in the present embodiment are at fold line 11 along fold line 11
Circular arc is gently excessive, and then pressure change during fan blade acting on pressure face will not drastically be changed so that wind speed can be put down
Steady transition, the operation of fan blade are more steady.
Preferably, in the present embodiment the main wind face 13 of blade 100 and secondary wind face 15 at fold line 11 towards fold line 11
Recessed, its recessed depth is the 5%-10% of the chord length of blade 100, and the manufacture that blade 100 can be increased if recessed depth is excessive is difficult
Degree, and the expansion wind effect and unobvious of then blade 100 can be then caused if recessed depth is too small, that is, reduce the effect that wind speed is concentrated
And unobvious.It should be noted that referring to Fig. 4, the chord length in the present embodiment refers to that the leaf tip of blade divides to blade rear edge three
One of between line..
As shown in Figure 3 and Figure 5, the portion for meeting the leading edge fluid to adjacent blades 100 on the main wind face 13 in the present embodiment
At position, the avoiding structure for avoiding leading edge fluid is specifically provided with leaf tail portion 17, and then can effectively reduce the trailing edge of blade 100 and phase
The interference of the adjacent leading edge fluid of blade 100, further reduce the noise in fan blade running, the avoiding structure in this specific implementation
For the bending being arranged on main wind face 13, bending is positioned at the 10%-15% opening positions of the main chord length of 13 blade of wind face 100, bending
Bending angle between 5 ° -20 °.
In an embodiment not shown, avoiding structure is the breach to be formed on main wind face 13, can equally realize drop
The interference of the trailing edge of low blades 100 and the leading edge fluid of adjacent blades 100, reduce the noise in fan blade running.
Embodiment 2
The present embodiment provides a kind of fan, including fan blade, and fan blade is fan blade as described above, and then above-described embodiment apoplexy
Advantage possessed by leaf, the fan in the present embodiment should also have, will not be repeated here.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (12)
1. a kind of fan blade, including：The more blades (100) uniformly arranged around the pivot of the fan blade, it is characterised in that institute
State and be divided at least by the side for being laterally away from the pivot close to the pivot on the blade face of blade (100)
Two wind faces, and separated between the two neighboring wind face by recessed fold line (11), make the two neighboring wind face in folder
Angle is set.
2. fan blade according to claim 1, it is characterised in that the blade face of the blade (100) is by the fold line (11)
Main wind face (13) and (15) two, secondary wind face wind face are divided into, the main wind face (13) is on the blade face away from the rotation
Heart side, the secondary wind face (15) are on the blade face close to the pivot side, and the main wind face (13) and institute
The angle between secondary wind face (15) is stated between 150 degree of -170 degree.
3. fan blade according to claim 2, it is characterised in that the main wind face (13) and the secondary wind face (15) are described
Fold line (11) place is gently excessive along fold line (11) circular arc.
4. fan blade according to claim 2, it is characterised in that the main wind face (13) of the blade (100) and the secondary wind
Face (15) is recessed towards the fold line (11) at fold line (11) place, and its recessed depth is the blade (100) chord length
5%-10%.
5. the fan blade according to any one of claim 2 to 4, it is characterised in that meeting to phase on the main wind face (13)
The position of the leading edge fluid of the adjacent blade (100) is provided with the avoiding structure for avoiding the leading edge fluid.
6. fan blade according to claim 5, it is characterised in that the avoiding structure is to be arranged on the main wind face (13)
Bending.
7. fan blade according to claim 6, it is characterised in that the bending angle of the bending is between 5 ° -20 °.
8. fan blade according to claim 6, it is characterised in that the bending is located at main wind face (13) the blade chord length
10%-15% opening positions.
9. fan blade according to claim 5, it is characterised in that the avoiding structure is to be formed on the main wind face (13)
Breach.
10. fan blade according to any one of claim 1 to 4, it is characterised in that the blade (100) includes outer layer leaf
Piece (10) and internal layer blade (30), connected between the outer blade (10) and internal layer blade (30) by vane (200).
11. fan blade according to claim 10, it is characterised in that the diameter of the vane (200) and the blade (100)
Maximum outside diameter ratio between 0.575 to 0.625.
12. a kind of fan, including fan blade, it is characterised in that the fan blade is the wind any one of claim 1 to 11
Leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711182766.6A CN107725478A (en) | 2017-11-23 | 2017-11-23 | Fan blade and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711182766.6A CN107725478A (en) | 2017-11-23 | 2017-11-23 | Fan blade and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725478A true CN107725478A (en) | 2018-02-23 |
Family
ID=61219011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711182766.6A Withdrawn CN107725478A (en) | 2017-11-23 | 2017-11-23 | Fan blade and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541840A (en) * | 2019-10-08 | 2019-12-06 | 安徽理工大学 | Wet-type dust fall fan wheel |
| CN110608192A (en) * | 2019-09-30 | 2019-12-24 | 珠海格力电器股份有限公司 | Fan and axial flow impeller |
| CN114233662A (en) * | 2021-12-17 | 2022-03-25 | 西安交通大学 | Axial flow fan blade structure, axial flow fan and preparation method of axial flow fan blade structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11132194A (en) * | 1997-10-24 | 1999-05-18 | Toshiba Corp | Axial flow fan |
| CN106762829A (en) * | 2017-02-07 | 2017-05-31 | 珠海格力电器股份有限公司 | blade for impeller, impeller and fan |
| CN206530538U (en) * | 2017-02-07 | 2017-09-29 | 珠海格力电器股份有限公司 | Blade for impeller, impeller and fan |
| CN207647841U (en) * | 2017-11-23 | 2018-07-24 | 珠海格力电器股份有限公司 | Fan blade and fan |
-
2017
- 2017-11-23 CN CN201711182766.6A patent/CN107725478A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11132194A (en) * | 1997-10-24 | 1999-05-18 | Toshiba Corp | Axial flow fan |
| CN106762829A (en) * | 2017-02-07 | 2017-05-31 | 珠海格力电器股份有限公司 | blade for impeller, impeller and fan |
| CN206530538U (en) * | 2017-02-07 | 2017-09-29 | 珠海格力电器股份有限公司 | Blade for impeller, impeller and fan |
| CN207647841U (en) * | 2017-11-23 | 2018-07-24 | 珠海格力电器股份有限公司 | Fan blade and fan |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608192A (en) * | 2019-09-30 | 2019-12-24 | 珠海格力电器股份有限公司 | Fan and axial flow impeller |
| WO2021063050A1 (en) * | 2019-09-30 | 2021-04-08 | 珠海格力电器股份有限公司 | Fan and axial-flow impeller |
| CN110541840A (en) * | 2019-10-08 | 2019-12-06 | 安徽理工大学 | Wet-type dust fall fan wheel |
| CN114233662A (en) * | 2021-12-17 | 2022-03-25 | 西安交通大学 | Axial flow fan blade structure, axial flow fan and preparation method of axial flow fan blade structure |
| CN114233662B (en) * | 2021-12-17 | 2023-09-29 | 西安交通大学 | Axial flow fan blade structure, axial flow fan and preparation method of axial flow fan |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180223 |