CN103161759A - Axial-flow fan blade - Google Patents
Axial-flow fan blade Download PDFInfo
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- CN103161759A CN103161759A CN2011104109480A CN201110410948A CN103161759A CN 103161759 A CN103161759 A CN 103161759A CN 2011104109480 A CN2011104109480 A CN 2011104109480A CN 201110410948 A CN201110410948 A CN 201110410948A CN 103161759 A CN103161759 A CN 103161759A
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- curve
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- radius
- level radius
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Abstract
The invention provides an axial-flow fan blade which comprises a wheel hub and a plurality of blade bodies arranged on the periphery of the wheel hub. An arc line of the section projection of the blades along a radial direction is formed by three sections of continuous curves which are respectively the first section of curve placed on the innermost side, the second section of curve placed in the middle and the third section of curve placed on the outermost side. The first section of curve and the third section of curve are bent towards a suction surface, and the second section of curve is bent towards a pressure surface. A chord line of the projection faces of the blade bodies of the axial-flow fan blade along the radial direction changes according to a certain law, on the premise that air amount and noise of a fan are guaranteed, production cost and mounting space are saved, and power consumption is lowered.
Description
Technical field
The present invention relates to air-conditioning technical field, especially, relate to a kind of axial-flow leaf.
Background technique
Axial-flow leaf by the axis hole in the middle of wheel hub be fixed on the air conditioner room outdoor air channel coordinating of motor shaft on, the quality of its design is the main determining factor of outdoor unit air channel quality.
Existing air-conditioning products is tending towards lightening, makes air flue structure compacter, and the installing space of blower fan diminishes, but what bring is the deterioration of noise thereupon, and the isostructural design of this aerofoil profile to axial-flow leaf is had higher requirement.
Summary of the invention
The object of the invention is to provide a kind of axial-flow leaf, with the technical problem that the aerofoil profile that solves existing axial-flow leaf can't adapt to that air-conditioning is lightening, the assembling space diminishes.
For achieving the above object, the invention provides a kind of axial-flow leaf, comprise wheel hub and a plurality of blades that are arranged on the periphery of wheel hub, the camber line of blade section projection is radially formed by three sections continous curves, three sections continous curves be respectively be positioned at the most inboard first paragraph curve, the second segment curve in the middle of being positioned at and be positioned at outermost the 3rd section curve, wherein, first paragraph curve and the 3rd section curve bend to suction surface, and the second segment curve bends to pressure side.
Further, the first paragraph curve begins to be bent to suction surface the position of the first primitive level radius from the outward edge of wheel hub; The second segment curve is bent to the position of the second primitive level radius since the position of the first primitive level radius to pressure side; The 3rd section curve is bent to the position of the 3rd primitive level radius since the position of the second primitive level radius to suction surface, wherein, the starting point of the first primitive level radius, the second primitive level radius and the 3rd primitive level radius is the center of wheel hub.
Further, the position of the position of the first primitive level radius or the 3rd primitive radius be continous curve along the axial-flow leaf central axis from pressure facing to the peak on the direction of suction surface.
Further, the position of the position of the first primitive level radius and the 3rd primitive radius be continous curve along the axial-flow leaf central axis from pressure facing to the peak on the direction of suction surface.
Further, the position of the outward edge of wheel hub or the second primitive level radius be continous curve along the axial-flow leaf central axis from pressure facing to the minimum point on the direction of suction surface.
Further, the position of the outward edge of wheel hub and the second primitive level radius be continous curve along the axial-flow leaf central axis from pressure facing to the minimum point on the direction of suction surface.
Further, the span of the first primitive level radius is as follows: 1.05Rh≤R1≤0.9R3, and wherein, Rh represents the radius of wheel hub, and R1 represents the first primitive level radius, and R3 represents the 3rd primitive level radius.
Further, the span of the second primitive level radius is as follows: 1.05R1≤R2≤0.98R3, and wherein, R1 represents the first primitive level radius, and R2 represents the second primitive level radius, and R3 represents the 3rd primitive level radius.
Further, first paragraph curve, second segment curve and the 3rd section all matched curve for being formed by equation of higher order match of curve.
Further, one or more snippets in three sections continous curves is wave molding.
The present invention has following beneficial effect:
The camber line of the blade of axial-flow leaf provided by the invention section projection is radially formed by three sections continous curves, and wherein, first paragraph curve and the 3rd section curve bend to suction surface, and the second segment curve bends to pressure side.The blade of the axial-flow leaf provided by the invention radially string of a musical instrument on projection plane changes with certain rule, can save production cost and installing space under the precondition that guarantees fan delivery and noise, reduces power consumption.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.The below is with reference to figure, and the present invention is further detailed explanation.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the Facad structure schematic diagram of the axial-flow leaf of the preferred embodiment of the present invention;
Fig. 2 is the side-looking structural representation of the axial-flow leaf of A-A direction in Fig. 1;
Fig. 3 is the position view of each primitive level radius of the hub radius of the preferred embodiment of the present invention and blade;
Fig. 4 is the composition structural representation of the S face in Fig. 2;
Fig. 5 is the matched curve schematic diagram in the rectangular coordinate system take radius as abscissa of the S face in Fig. 2;
Fig. 6 is that the first paragraph curve is undulatory blade profile schematic diagram;
Fig. 7 is that the second segment curve is undulatory blade profile schematic diagram;
Fig. 8 is that the 3rd section curve is undulatory blade profile schematic diagram;
Fig. 9 is that three sections curves are all undulatory blade profile schematic diagram; And
Figure 10 is the contrast schematic diagram of the sectional shape of the sectional shape of axial-flow leaf of the prior art and axial-flow leaf provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As depicted in figs. 1 and 2, the invention provides a kind of axial-flow leaf, comprise wheel hub 10 and a plurality of blades 30 that are arranged on the periphery of wheel hub 10, the camber line of each blade 30 section projection is radially formed by three sections continous curves, three sections continous curves be respectively be positioned at the most inboard first paragraph curve S 1, the second segment curve S 2 in the middle of being positioned at and be positioned at outermost the 3rd section curve S 3, wherein, described first paragraph curve S 1 and described the 3rd section curve S 3 are to suction surface C bending, and second segment curve S 2 bends to pressure side D.As can be seen from the figure, first paragraph curve S 1 and the 3rd section curve S 3 are the convex bending to suction surface C, and second segment curve S 2 is the convex bending to pressure side D.The shape of each blade 30 may not be all identical, and still, in order to guarantee dynamic balancing, the shape of symmetrical blade should be identical.Each blade 30 is equidistantly or the unequal-interval distribution take rotating center as the axle center.
As shown in Figure 3 and Figure 4, specifically, first paragraph curve S 1 begins to be bent to suction surface the position of the first primitive level radius R 1 from the outward edge of wheel hub 10; Second segment curve S 2 is bent to the position of the second primitive level radius R 2 since the position of the first primitive level radius R 1 to pressure side; The 3rd section curve R3 is bent to the position of the 3rd primitive level radius R 3 since the position of the second primitive level radius R 2 to suction surface, wherein, the starting point of the first primitive level radius R 1, the second primitive level radius R 2 and the 3rd primitive level radius R 3 is the center of wheel hub 10.
In fact, the position of the first primitive level radius R 1 or the position of the 3rd primitive radius R 3 be continous curve along the axial-flow leaf central axis from the peak of pressure side D on the direction of suction surface C, can both be also the peak of continous curve simultaneously.
Correspondingly, the position of the outward edge of wheel hub 10 or the second primitive level radius R 2 is the minimum point of continous curve, also can both be simultaneously continous curve along the axial-flow leaf central axis from pressure side D minimum point on the direction of suction surface C.
The span of the first primitive level radius R 1 is as follows:
1.05Rh≤R1≤0.98R3, wherein, Rh represents the radius of wheel hub, and R1 represents the first primitive level radius, and R3 represents the 3rd primitive level radius.
The span of the second primitive level radius R 2 is as follows:
1.05R1≤R2≤0.98R3, wherein, R1 represents the first primitive level radius, and R2 represents the second primitive level radius, and R3 represents the 3rd primitive level radius.
The all matched curves for being formed by equation of higher order match of the first curve, the second curve and the 3rd curve.
As shown in Figure 5, with blade 30 radially the curvilinear structures in cross section be arranged in plane coordinate system, the initial point of system of coordinates is the radial cross section upper blade 30 of blade 30 and the outer peripheral point of contact of wheel hub 10, the x axle is the direction that the outward edge along the outward edge of this wheel hub 10 to blade 30 extends, and the x value represents the extended length that the cross section drop shadow curve of cross section upper blade 30 makes progress the party; The y axle is the coordinate axes parallel with the running shaft of blade 30.
Under this rectangular coordinate system, blade 30 radially three sections curves in cross section can be represented by following formula respectively:
The fitting formula of first paragraph curve S 1: y=-0.0019x
2+ 0.289x-0.1181,
The fitting formula of second segment curve S 2: y=6 * 10
-8x
4+ 2 * 10
-5x
3-0.0077x
2+ 0.668x-6.8706,
The fitting formula of the 3rd section curve S 3: y=0.0027x
2-0.6468x+39.023;
Each section curve is all the n equation of n th order n about x, and this equation can have multiple.
For example,
First paragraph curve S 1 also can fit to y=-3 * 10
-5x
3+ 6 * 10
-4x
2The cubic curve of+0.235+0.049,
Second segment curve S 2 also can fit to
Y=-8 * 10
-12x
6+ 5 * 10
-9x
5-1 * 10
-6x
4+ 2 * 10
-4x
3-0.0192x
2-13.271 sextic,
The 3rd section curve S 3 also can fit to y=1 * 10
-5x
3-2.5 * 10
-3x
2The cubic curve of+0.1366x;
Each section curve can improve the air current flow of suction surface C and pressure side D as long as satisfy Changing Pattern as described above, reduces vortex shedding, reduces production costs.
To shown in Figure 9, any end in three sections continous curves or three sections can be wave molding as Fig. 6.
As shown in figure 10, the radial cross section shape of the blade 30 of axial-flow leaf provided by the invention is different from and is numbered other aerofoil profiles of 1,2 in Figure 10, compare with other aerofoil profiles, this vane airfoil profile provided by the invention can be in the situation that both guarantee air quantity, can reduce power consumption again, improve the air current flow of suction surface and pressure side, minimizing refluxes and produces vortex shedding at fan blade outer rim place because the pressure reduction reason causes air-flow, improve the air turbulence phenomenon, thereby reduction noise, reduce installing space, and have certain cost advantage.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. axial-flow leaf, comprise wheel hub (10) and be arranged on a plurality of blades (30) of the periphery of described wheel hub (10), it is characterized in that, the camber line of described blade (30) section projection is radially formed by three sections continous curves, described three sections continous curves are respectively and are positioned at the most inboard first paragraph curve (S1), be positioned at middle second segment curve (S2) and be positioned at outermost the 3rd section curve (S3), wherein, described first paragraph curve (S1) and described the 3rd section curve (S3) bend to suction surface (C), described second segment curve (S2) bends to pressure side (D).
2. axial-flow leaf according to claim 1, is characterized in that,
Described first paragraph curve (S1) begins to be bent to described suction surface (C) position of the first primitive level radius (R1) from the outward edge of described wheel hub (10);
Described second segment curve (S2) begins to be bent to described pressure side (D) position of the second primitive level radius (R2) from the position of described the first primitive level radius (R1);
Described the 3rd section curve (S3) begins to be bent to described suction surface (C) position of the 3rd primitive level radius (R3) from the position of described the second primitive level radius (R2),
Wherein, the starting point of described the first primitive level radius (R1), described the second primitive level radius (R2) and described the 3rd primitive level radius (R3) is the center of described wheel hub (10).
3. axial-flow leaf according to claim 2, it is characterized in that, the position of the position of described the first primitive level radius (R1) or described the 3rd primitive radius (R3) be described continous curve along the axial-flow leaf central axis from the peak of pressure side (D) on the direction of suction surface (C).
4. axial-flow leaf according to claim 2, it is characterized in that, the position of the position of described the first primitive level radius (R1) and described the 3rd primitive radius (R3) be described continous curve along the axial-flow leaf central axis from the peak of pressure side (D) on the direction of suction surface (C).
5. according to claim 3 or 4 described axial-flow leafs, it is characterized in that, the position of the outward edge of described wheel hub (10) or described the second primitive level radius (R2) be described continous curve along the axial-flow leaf central axis from the minimum point of pressure side (D) on the direction of suction surface (C).
6. according to claim 3 or 4 described axial-flow leafs, it is characterized in that, the position of the outward edge of described wheel hub (10) and described the second primitive level radius (R2) be described continous curve along the axial-flow leaf central axis from the minimum point of pressure side (D) on the direction of suction surface (C).
7. axial-flow leaf according to claim 2, is characterized in that, the span of described the first primitive level radius is as follows: 1.05Rh≤R1≤0.9R3, and wherein, Rh represents the radius of wheel hub, and R1 represents the first primitive level radius, and R3 represents the 3rd primitive level radius.
8. axial-flow leaf according to claim 2, is characterized in that, the span of described the second primitive level radius is as follows: 1.05R1≤R2≤0.98R3, wherein, R1 represents the first primitive level radius, and R2 represents the second primitive level radius, and R3 represents the 3rd primitive level radius.
9. axial-flow leaf according to claim 1, is characterized in that, described first paragraph curve (S1), second segment curve (S2) and all matched curves for being formed by equation of higher order match of described the 3rd section curve (S3).
10. axial-flow leaf according to claim 1, is characterized in that, one or more snippets in described three sections continous curves is wave molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110410948.0A CN103161759B (en) | 2011-12-09 | 2011-12-09 | Axial-flow leaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110410948.0A CN103161759B (en) | 2011-12-09 | 2011-12-09 | Axial-flow leaf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161759A true CN103161759A (en) | 2013-06-19 |
| CN103161759B CN103161759B (en) | 2016-03-02 |
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ID=48585174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110410948.0A Active CN103161759B (en) | 2011-12-09 | 2011-12-09 | Axial-flow leaf |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180168A (en) * | 2017-12-27 | 2018-06-19 | 泛仕达机电股份有限公司 | A kind of compound bending fan blade and the fan including the blade |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1232143A (en) * | 1998-04-14 | 1999-10-20 | 松下电器产业株式会社 | Impeller of fan |
| CN101457766A (en) * | 2008-12-18 | 2009-06-17 | 寿国理 | Highly effective low noise axial fan for vehicle |
| CN201739227U (en) * | 2009-11-12 | 2011-02-09 | 广东顺威精密塑料股份有限公司 | Middle-bended axial-flow fan blade |
| CN202326417U (en) * | 2011-12-09 | 2012-07-11 | 珠海格力电器股份有限公司 | Axial flow fan blade |
-
2011
- 2011-12-09 CN CN201110410948.0A patent/CN103161759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1232143A (en) * | 1998-04-14 | 1999-10-20 | 松下电器产业株式会社 | Impeller of fan |
| CN101457766A (en) * | 2008-12-18 | 2009-06-17 | 寿国理 | Highly effective low noise axial fan for vehicle |
| CN201739227U (en) * | 2009-11-12 | 2011-02-09 | 广东顺威精密塑料股份有限公司 | Middle-bended axial-flow fan blade |
| CN202326417U (en) * | 2011-12-09 | 2012-07-11 | 珠海格力电器股份有限公司 | Axial flow fan blade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180168A (en) * | 2017-12-27 | 2018-06-19 | 泛仕达机电股份有限公司 | A kind of compound bending fan blade and the fan including the blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103161759B (en) | 2016-03-02 |
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