CN106122092B - A kind of novel blade and the impeller using the fan blade - Google Patents
A kind of novel blade and the impeller using the fan blade Download PDFInfo
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- CN106122092B CN106122092B CN201610711111.2A CN201610711111A CN106122092B CN 106122092 B CN106122092 B CN 106122092B CN 201610711111 A CN201610711111 A CN 201610711111A CN 106122092 B CN106122092 B CN 106122092B
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Classifications
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- 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
- F04D29/26—Rotors specially for elastic fluids
-
- 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
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of novel blade, including blade body, blade body has pressure surface and suction surface, neutral surface is provided between pressure surface and suction surface, the pressure surface or suction surface or neutral surface include root side, front, top margin, the back being sequentially connected with, the projection on the root conical surface, the average conical surface, addendum cone face forms root side, average control line, top margin respectively for root arc, mean arc, top arc, pressure surface or suction surface or neutral surface be the line smooth surface determined by root side, average control line, top margin.The present invention also provides a kind of impeller provided with above-mentioned novel blade.According to the contrast of experimental result, the present invention can greatly improve fan efficiency and reduce than A sound level.The present invention is used for blower fan.
Description
Technical field
A kind of impeller the present invention relates to novel blade for mixed flow fan and using the fan blade.
Background technology
Mixed flow impeller machine produces air-flow by impeller, and impeller includes impeller hub, and impeller hub is provided with multiple fan blades, existing
The shape of the fan blade of some mixed flow impeller machines is in tabular.Such fan blade is unfavorable for the generation of wind, causes existing mixed flow leaf
The low-power consumption of turbine flow is high and noise is big.The thus use cost of increased user, it can also injure the hearing of people.
The content of the invention
The technical problem to be solved in the present invention is：One kind is provided and is used for a kind of novel blade of axial fan.
The present invention solve its technical problem solution be：
A kind of novel blade, including blade body, blade body are the uniform lamellar body of wall, blade body have pressure surface and
Suction surface, is provided with neutral surface between pressure surface and suction surface, the pressure surface or suction surface or neutral surface include what is be sequentially connected with
Root side, front, top margin, back；
Root side is drop shadow curve of the root arc on the root conical surface, and root arc is the circular arc that radius is R, using the midpoint of root arc as foundation
The line of point, the face on the basis of the face perpendicular to the axis of the root conical surface and by foundation point, root arc upper extreme point and lower extreme point is root
The angle of string, root string and reference plane is A；
Drop shadow curve of the top margin for top arc on addendum cone face, top arc are the circular arc that radius is R2, push up the midpoint of arc in benchmark
On face, the line that pushes up arc upper extreme point and lower extreme point is top chord, and the angle of top chord and reference plane is B；
Plane where root arc is parallel to each other with the plane where the arc of top, and the projecting direction of root arc and top arc is root arc institute
Plane normal direction, the plane where root arc is vertical with reference plane；Push up the extended line of the midpoint of arc and the midpoint line of root arc
Intersect with the axis of the root conical surface；
The root conical surface is coaxial with addendum cone face；
Average control line is provided between root side and top margin, the axial line distance of upper extreme point to the root conical surface of average control line is
Cr, the axial line distance of upper extreme point to the root conical surface on root side is ar, and the axial line distance of upper extreme point to the root conical surface of top margin is br, average
The axial line distance of the lower extreme point of control line to the root conical surface is cR, and the axial line distance of lower extreme point to the root conical surface on root side is aR, top margin
The axial line distance of lower extreme point to the root conical surface be bR；
Wherein, ar2+br2=cr2,aR2+bR2=cR2；
Average control line is formed from the mean arc that radius is R1 to the projection of the average conical surface, and the average conical surface is the side of the frustum of a cone
Face, the upper end radius of the frustum of a cone where the average conical surface is cr, and the lower end radii of the frustum of a cone where the average conical surface is cR, average
Plane where arc is parallel to each other with the plane where root arc, and the projecting direction of mean arc is the normal direction of the plane where root arc,
The midpoint of mean arc is in reference plane, the midpoint of mean arc and the extended line of the midpoint line of root arc and the axis phase of the root conical surface
Hand over, the average conical surface is coaxial with the root conical surface, and the line of the upper extreme point of mean arc and the lower extreme point of mean arc is mean chord 0, mean chord 0
Angle with reference plane is C；
Pressure surface or suction surface are root side, continuous and derivable curved surface determined by average control line, top margin.
As the further improvement of such scheme, the range of taper of the root conical surface is 27 degree to 33 degree.
As the further improvement of such scheme, the range of taper in addendum cone face is 10 degree to 15 degree.
As the further improvement of such scheme, R：R1=0.525~0.725, R:R2=0.18~0.38.
As the further improvement of such scheme, R1:R2=0.35~0.55.
As the further improvement of such scheme, A scope is 52 degree to 58 degree.
As the further improvement of such scheme, B scope is 32 degree to 39 degree.
As the further improvement of such scheme, C scope is 38 degree to 45 degree.
A kind of impeller, including the impeller hub in circular cone shape, annular is evenly equipped with multiple above-mentioned on the conical surface of impeller hub
Novel blade, the conical surface of the root conical surface and impeller hub has identical taper.
As the further improvement of such scheme, the root conical surface overlaps with the conical surface of impeller hub.
The beneficial effects of the invention are as follows：A kind of novel blade, including blade body, blade body have pressure surface and negative pressure
Face, is provided with neutral surface between pressure surface and suction surface, root side that the pressure surface or suction surface or neutral surface include being sequentially connected with,
Front, top margin, back, projection forms root side, put down on the root conical surface, the average conical surface, addendum cone face respectively for root arc, mean arc, top arc
Equal control line, top margin, pressure surface or suction surface or neutral surface be the line light determined by root side, average control line, top margin
Sliding curved surface.The present invention also provides a kind of impeller provided with above-mentioned novel blade.According to the contrast of experimental result, the present invention can be significantly
Improve fan efficiency and reduce than A sound level.The present invention is used for blower fan.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described.Obviously, described accompanying drawing is the part of the embodiment of the present invention, rather than is all implemented
Example, those skilled in the art on the premise of not paying creative work, can also obtain other designs according to these accompanying drawings
Scheme and accompanying drawing.
Fig. 1 is the schematic front view of the impeller embodiment of the present invention；
Fig. 2 is the blade structure schematic diagram on the impeller embodiment of the present invention；
Fig. 3 is the method for root arc, mean arc, top arc in the plane where root arc of the fan blade on the impeller embodiment of the present invention
To schematic diagram；
Fig. 4 be the root conical surface of the fan blade on the impeller embodiment of the present invention, the average conical surface, addendum cone face and root arc, mean arc,
Push up the corresponding relation schematic diagram of arc.
Embodiment
Carried out below with reference to the design of embodiment and accompanying drawing to the present invention, concrete structure and caused technique effect clear
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/annexations, not singly refer to component and directly connect, and refer to be added deduct by adding according to specific implementation situation
Few couple auxiliary, to form more excellent draw bail.Each technical characteristic in the present invention, in the premise of not conflicting conflict
Under can be with combination of interactions.
Referring to figs. 1 to Fig. 4, this is this practical one embodiment, specifically：
A kind of impeller, including the impeller hub 200 in circular cone shape, annular is evenly equipped with more on the conical surface of impeller hub 200
Individual novel blade, the conical surface of the root conical surface 1015 and impeller hub 200 have identical taper.
The novel blade includes blade body, and blade body is the uniform lamellar body of wall, blade body have pressure surface and
Suction surface, pressure surface and, the pressure surface includes the root side 101, front 102, top margin 103, the back 104 that are sequentially connected with；
Root side 101 is drop shadow curve of the root arc 1011 on the root conical surface 1015, and root arc 1011 is the circular arc that radius is R, with
The midpoint of root arc 1011 is foundation point 1012, on the basis of the face perpendicular to the axis of the root conical surface 1015 and by foundation point 1012
The line of face 1013, the upper extreme point of root arc 1011 and lower extreme point is root string 1014, and root string 1014 and the angle of reference plane 1013 are A；
Drop shadow curve of the top margin 103 for top arc 1031 on addendum cone face 1033, top arc 1031 are the circular arc that radius is R2, are pushed up
In reference plane 1013, the line that pushes up the upper extreme point of arc 1031 and lower extreme point be top chord 1032 at the midpoint of arc 1031, top chord 1032 and
The angle of reference plane 1013 is B；
Plane where root arc 1011 is parallel to each other with the plane where top arc 1031, the throwing of root arc 1011 and top arc 1031
Shadow direction is the normal direction of the plane at the place of root arc 1011, and the plane where root arc 1011 is vertical with reference plane 1013；Push up arc
Intersect with the axis of the extended line and the root conical surface 1015 of the midpoint line of root arc 1011 at 1031 midpoint；
The root conical surface 1015 is coaxial with addendum cone face 1033；
It is provided with average control line between root side 101 and top margin 103, the axle of the upper extreme point of average control line to the root conical surface 1015
Linear distance is cr, and the axial line distance of upper extreme point to the root conical surface 1015 on root side 101 is ar, the upper extreme point of top margin 103 to the root conical surface
1015 axial line distance is br, and the axial line distance of lower extreme point to the root conical surface 1015 of average control line is cR, the lower end on root side 101
The axial line distance of point to the root conical surface 1015 is aR, and the axial line distance of lower extreme point to the root conical surface 1015 of top margin 103 is bR；
Wherein, ar2+br2=cr2,aR2+bR2=cR2；
Average control line is projected to the average conical surface 1002 from the mean arc 1001 that radius is R1 and formed, and the average conical surface 1002 is
The side of the frustum of a cone, the upper end radius of the frustum of a cone where the average conical surface 1002 is cr, the frustum of a cone where the average conical surface 1002
Lower end radii be cR, the plane where mean arc 1001 and the plane at the place of root arc 1011 are parallel to each other, mean arc 1001
Projecting direction is the normal direction of the plane at the place of root arc 1011, and the midpoint of mean arc 1001 is in reference plane 1013, mean arc 1001
Midpoint intersect with the axis of the extended line and the root conical surface 1015 of the midpoint line of root arc 1011, the average conical surface 1002 and the root conical surface
1015 is coaxial, and the line of the upper extreme point of mean arc 1001 and the lower extreme point of mean arc 1001 is mean chord 1003, mean chord 1003
Angle with reference plane 1013 is C；
Pressure surface or suction surface are root side 101, continuous and derivable curved surface determined by average control line, top margin 103.
The range of taper of the root conical surface 1015 is 27 degree to 33 degree, and the present embodiment chooses 30 degree.
The range of taper in addendum cone face 1033 is 10 degree to 15 degree, and the present embodiment chooses 12 degree.
R：R1=0.525~0.725, R:R2=0.18~0.38, the R of the present embodiment choose 80, R1 and choose 133, R2 choosings
Take 400.
A scope is 52 degree to 58 degree, and the present embodiment chooses 55 degree.
B scope is 32 degree to 39 degree, and the present embodiment chooses 35 degree.
C scope is 38 degree to 45 degree, and the present embodiment chooses 40 degree.
The root conical surface 1015 overlaps with the conical surface of impeller hub 200.
Because air is in actually flowing, all flow parameters are all the functions that space coordinates fastens three direction variables.
Influence of the fan blade, impeller stream curvature of a curve and slope of the present invention to flow parameter will design the impeller of sample just with regard to particularly pertinent
The constraint of " along periphery " flowing is breached, stream curvature of a curve and slope are taken into account, while is also contemplated that entropy and work(edge
The change of radial direction.The present invention blade shape it is not only curved but also turn round, it is each in leaf road to adapt to flow parameter (such as speed, pressure)
The difference of spatial point, and it is met big flow, high stage pressure ratio, there is high efficiency and wider variable working condition model again
Enclose.
Because same Fans can all show different performances under different operating modes, flat formula fan blade is put down not to existing
With DATA REASONING is carried out under operating mode, measured data is as shown in table 1：
Table 1：
Similarly, the impeller of the present embodiment is measured under same operating mode, measured data is as shown in table 2：
Table 2：
The data of contrast table 1, table 2, under identical power, flow of the present embodiment in each operating mode, fan efficiency
All it is significantly larger than the impeller of prior art, and noise substantially reduces.
Effect of the invention is further illustrated in order to allow, the parameter and experimental data of another embodiment are now provided：
The root conical surface 1015 chooses 27 degree, and the range of taper in addendum cone face 1033 chooses 15 degree, and the R of the present embodiment chooses 80, R1
Choose 133, R2 and choose 58 degree of 400, A selections, B chooses 32 degree, and C chooses 45 degree, as shown in table 3；
Table 3：
In R＆D process, applicant has also tested a kind of scheme, exactly allows existing blade to be bent, and is allowing it just
Pressure surface is the part on the face of cylinder, and the radius on the face of cylinder is 400, and measurement data is as shown in table 4：
Table:4：
Contrast table 1 and table 4 are understood, merely existing blade is bent, to fan efficiency, noise, air quantity shadow
Ring less, or even have negative impact.
The better embodiment of the present invention is illustrated above, but the present invention is not limited to the embodiment,
Those skilled in the art can also make a variety of equivalent modifications or replacement on the premise of without prejudice to spirit of the invention, this
Equivalent modification or replacement are all contained in the application claim limited range a bit.
Claims (10)
1. a kind of novel blade, including blade body, it is characterised in that：Blade body is the uniform lamellar body of wall, and blade body has
There are pressure surface and suction surface, neutral surface is provided between pressure surface and suction surface, the pressure surface or suction surface or neutral surface include
Root side (101), front (102), top margin (103), back (104) being sequentially connected with；
Root side (101) is drop shadow curve of the root arc (1011) on the root conical surface (1015), and root arc (1011) is the circle that radius is R
Arc, using the midpoint of root arc (1011) as foundation point (1012), with perpendicular to the axis of the root conical surface (1015) and by foundation point
(1012) line of face (1013) on the basis of face, root arc (1011) upper extreme point and lower extreme point is root string (1014), root string
(1014) angle with reference plane (1013) is A；
Drop shadow curve of the top margin (103) for top arc (1031) on addendum cone face (1033), top arc (1031) are the circle that radius is R2
Arc, in reference plane (1013), the line for pushing up arc (1031) upper extreme point and lower extreme point is top chord at the midpoint of top arc (1031)
(1032), top chord (1032) and the angle of reference plane (1013) are B；
Plane where root arc (1011) is parallel to each other with the plane where top arc (1031), root arc (1011) and top arc (1031)
Projecting direction be the plane where root arc (1011) normal direction, the plane where root arc (1011) hangs down with reference plane (1013)
Directly；
Intersect with the axis of the extended line and the root conical surface (1015) of the midpoint line of root arc (1011) at the midpoint of top arc (1031)；
The root conical surface (1015) is coaxial with addendum cone face (1033)；
It is provided with average control line between root side (101) and top margin (103), the upper extreme point of average control line to the root conical surface (1015)
Axial line distance is cr, and the axial line distance of upper extreme point to the root conical surface (1015) of root side (101) is ar, the upper extreme point of top margin (103)
Axial line distance to the root conical surface (1015) is br, and the axial line distance of lower extreme point to the root conical surface (1015) of average control line is cR,
The axial line distance of the lower extreme point on root side (101) to the root conical surface (1015) is aR, the lower extreme point of top margin (103) to the root conical surface (1015)
Axial line distance be bR；
Wherein, ar2+br2=cr2,aR2+bR2=cR2；
Average control line is formed from the mean arc (1001) that radius is R1 to the average conical surface (1002) projection, the average conical surface (1002)
For the side of the frustum of a cone, the upper end radius of the frustum of a cone where the average conical surface (1002) is cr, where the average conical surface (1002)
The lower end radii of the frustum of a cone is cR, and the plane where mean arc (1001) is parallel to each other with the plane where root arc (1011), is put down
The normal direction of plane of the projecting direction of equal arc (1001) where root arc (1011), the midpoint of mean arc (1001) is in reference plane
(1013) on, the midpoint of mean arc (1001) and the extended line of the midpoint line of root arc (1011) and the axis of the root conical surface (1015)
Intersecting, the average conical surface (1002) is coaxial with the root conical surface (1015), under the upper extreme point and mean arc (1001) of mean arc (1001)
The line of end points is mean chord (1003), and mean chord (1003) and the angle of reference plane (1013) are C；
Pressure surface or suction surface are root side (101), continuous and derivable curved surface determined by average control line, top margin (103).
A kind of 2. novel blade according to claim 1, it is characterised in that：The range of taper of the root conical surface (1015) is 27 degree
To 33 degree.
A kind of 3. novel blade according to claim 1, it is characterised in that：The range of taper in addendum cone face (1033) is 10 degree
To 15 degree.
A kind of 4. novel blade according to claim 1, it is characterised in that：A scope is 52 degree to 58 degree.
A kind of 5. novel blade according to claim 1, it is characterised in that：B scope is 32 degree to 39 degree.
A kind of 6. novel blade according to claim 1, it is characterised in that：C scope is 38 degree to 45 degree.
A kind of 7. novel blade according to claim 1, it is characterised in that：R：R1=0.525~0.725, R:R2=
0.18~0.38.
A kind of 8. novel blade according to claim 7, it is characterised in that：R1:R2=0.35~0.55.
A kind of 9. impeller, it is characterised in that：Including the impeller hub (200) in circular cone shape, on the conical surface of impeller hub (200)
Annular is evenly equipped with multiple novel blades as claimed in any of claims 1 to 8 in one of claims, the root conical surface (1015) and impeller hub
(200) the conical surface has identical taper.
A kind of 10. impeller according to claim 9, it is characterised in that：The cone of the root conical surface (1015) and impeller hub (200)
Face overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711111.2A CN106122092B (en) | 2016-08-23 | 2016-08-23 | A kind of novel blade and the impeller using the fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711111.2A CN106122092B (en) | 2016-08-23 | 2016-08-23 | A kind of novel blade and the impeller using the fan blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106122092A CN106122092A (en) | 2016-11-16 |
| CN106122092B true CN106122092B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610711111.2A Active CN106122092B (en) | 2016-08-23 | 2016-08-23 | A kind of novel blade and the impeller using the fan blade |
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| CN107477022B (en) * | 2017-08-25 | 2023-06-30 | 佛山市南海九洲普惠风机有限公司 | Trapezoidal distortion fan blade |
| CN107559235B (en) * | 2017-09-07 | 2024-03-19 | 佛山市南海九洲普惠风机有限公司 | Fan blade and impeller of ternary torsion fan |
| CN110566499B (en) * | 2019-09-17 | 2024-03-19 | 佛山市南海九洲普惠风机有限公司 | Arc diagonal flow impeller |
| CN114458621A (en) * | 2022-01-24 | 2022-05-10 | 广东顺威精密塑料股份有限公司 | Fan blade and blower |
| CN114412835B (en) * | 2022-03-31 | 2022-06-03 | 佛山市南海九洲普惠风机有限公司 | Crescent forward and backward air supply impeller without disassembly |
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| CN104196756A (en) * | 2014-07-07 | 2014-12-10 | 珠海格力电器股份有限公司 | Cross-flow fan blade and air conditioner |
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| CN205956062U (en) * | 2016-08-23 | 2017-02-15 | 佛山市南海九洲普惠风机有限公司 | Novel fan blade and use impeller of this fan blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5586053A (en) * | 1992-08-14 | 1996-12-17 | Goldstar Co., Ltd. | Method to determine the blade shape of a sirocco fan |
| EP2294313B1 (en) * | 2008-04-22 | 2012-09-05 | Nheolis (Sarl) | Blade for a device for generating energy from a fluid flow and device comprising a rotor using said blades |
| CN201786764U (en) * | 2010-07-05 | 2011-04-06 | 浙江志江风机有限公司 | Noise-damping ventilating machine of mixed flow type chassis |
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| CN104196756A (en) * | 2014-07-07 | 2014-12-10 | 珠海格力电器股份有限公司 | Cross-flow fan blade and air conditioner |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106122092A (en) | 2016-11-16 |
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