CN202579307U - Axial-flow wind wheel structure and axial-flow fan - Google Patents
Axial-flow wind wheel structure and axial-flow fan Download PDFInfo
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- CN202579307U CN202579307U CN201220072856.6U CN201220072856U CN202579307U CN 202579307 U CN202579307 U CN 202579307U CN 201220072856 U CN201220072856 U CN 201220072856U CN 202579307 U CN202579307 U CN 202579307U
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Abstract
The utility model relates to an axial-flow wind wheel structure and an axial-flow fan, wherein the axial-flow wind wheel structure comprises a wheel hub and three blades arranged on the wheel hub; the three blades are distributed with the same space around the central axis of the rotation of the blades; the blades are provided with a trailing edge and a leading edge opposite to the trailing edge; the trailing edge of the blades is provided with at least five V-shaped saw tooth grooves having different sizes; and the bottom point of each V-shaped saw tooth groove is linear with the two end points of the trailing edge. The design of the axial-flow fan disclosed by the utility model is fully optimized in that the trailing edge of the blades is provided with at least five V-shaped saw tooth grooves that have different sizes and are arranged discontinuously, and the bottom point of each V-shaped saw tooth groove is linear with the two end points of the trailing edge; therefore, the air volume and efficiency of the axial-flow fan can be effectively increased, the vibration of the fan can be improved, and the noise and design cost of the fan can be reduced; meanwhile, the axial-flow fan is characteristic of high load, so the axial-flow fan can be well applicable to the outdoor unit of an air conditioner so as to improve the cooling capacity, heating capacity and energy efficiency ratio of the air conditioner.
Description
Technical field
The utility model relates to the axial fan technical field, relates in particular to a kind of axial-flow windwheel structure and axial fan that is suitable for air conditioner outdoor machine.
Background technique
At present, the outdoor unit of room air conditioner is to adopt axial fan basically, and the fan blade of axial fan is made up of the 2-6 leaf usually.Air quantity is big though axial fan has, low noise advantages.But the design of axial fan has direct influence to the performance parameters such as refrigerating capacity, heating capacity and Energy Efficiency Ratio of air conditioner.Thereby the optimal design of axial fan is most important to the performance of air conditioner.
Conventional axial fan, its air quantity is directly proportional with fan blade quantity, and fan blade quantity is many more; The big air quantity of then easier acquisition, still, fan blade quantity cost more at most is high more; And processing is more complicated, and in addition, fan blade quantity is many; Also will increase motor load and blower fan input power consumption, thereby fan efficiency is descended, influence the Energy Efficiency Ratio of air-conditioning.On the contrary, when fan blade quantity reduced, though processing becomes simply, cost reduced, and air quantity also can reduce, and influences the air conditioner machine performance.Simultaneously, fan blade quantity is few more, and the rotating speed of fan also can increase, and the noise of generation also can improve.In addition, under the situation that fan blade quantity reduces, also there are problems such as low static pressure liter, high static pressure liter and high load.And fan moves under some frequency, can cause the vibration of complete machine owing to the vibration of fan blade, influences machine performance.Therefore, when the design fan, need take all factors into consideration from aspects such as balance air quantity, noise and costs.
Though also there is the design proposal of axial fan now in the technology; The manufacture cost that can suppress fan noise and reduction fan; But all do not take all factors into consideration above-mentioned factor, comprehensively improve optimal design, thereby can't improve the performance of axial fan on the whole.
The model utility content
The main purpose of the utility model is to provide a kind of axial-flow windwheel structure and axial fan that improves the axial fan overall performance.
In order to achieve the above object; The utility model proposes a kind of axial-flow windwheel structure, comprises wheel hub and is installed at least three fan blades on the said wheel hub, and said at least three fan blades are the center with fan blade rotating center axis; Be equidistant distribution; Said fan blade has trailing edge and the leading edge relative with said trailing edge, and the trailing edge of said fan blade has at least five V-type serrated slot that cause not of uniform size, and the end point of each V-type serrated slot and the two-end-point of said trailing edge are in line.
Preferably, it is protruding to form arc top between the adjacent two said V-type serrated slot, and the top of the V-type serrated slot of same fan blade forms an arcuate segment.
Preferably; The trailing edge of said fan blade has five said V-type serrated slot; The two-end-point of said trailing edge is respectively near the interior end points of wheel hub with away from the outer end points of wheel hub, the end of said five V-type serrated slot point by interior end points to outer end points be followed successively by first, second, third and fourth, five ends point; Wherein:
The distance of end points to said first end point with the ratio of the distance of point of said first end to said second end point is in said: 0.8～0.9;
The distance of point of said first end to said second end point equals the distance of point of said second end to point of said the 3rd end;
The distance of point of said second end to said the 3rd end point with the ratio of the distance of point of said the 3rd end to said the 4th end point is: 1.3～1.5;
The distance of point of said the 3rd end to said the 4th end point with the ratio of the distance of point of said the 4th end to said the 5th end point is: 1.3～1.5;
The distance of point of said the 4th end to said the 5th end point with the ratio of point of said the 5th end to the distance of said outer end points is: 1.2～1.5.
Preferably; Said trailing edge is an arc; Arcuate segment between the interior end points of said trailing edge to the outer end points is divided into 11 segmentations by said five V-type serrated slot; On the fore-and-aft direction from the interior end points of said trailing edge to outer end points, adjacent last segmentation with the ratio of the arc length of a segmentation afterwards is: 1.3～1.6.
Preferably, three said fan blades are installed on the said wheel hub, said three fan blades are the center with fan blade rotating center axis, are equidistant distribution with 120 degree ± 5 degree.
Preferably, said fan blade profile is sickle shaped wide outside and narrow inside, and is the three dimensional space distorted shape.
The utility model also proposes a kind of axial fan; Comprise axial-flow windwheel, said axial-flow windwheel comprises wheel hub and is installed at least three fan blades on the said wheel hub that said at least three fan blades are the center with fan blade rotating center axis; Be equidistant distribution; Said fan blade has trailing edge and the leading edge relative with said trailing edge, and the trailing edge of said fan blade has at least five V-type serrated slot that cause not of uniform size, and the end point of each V-type serrated slot and the two-end-point of said trailing edge are in line.
Preferably, said axial-flow windwheel comprises aforesaid axial-flow windwheel structure.
A kind of axial-flow windwheel structure and axial fan that the utility model proposes cause and the V-type serrated slot of discontinuous arrangement in that five of the trailing edge settings of fan blade are not of uniform size at least, and the end point of each V-type serrated slot and the two-end-point of trailing edge are in line; Thus axial fan is carried out comparatively comprehensively optimal design; Can effectively improve air quantity, the efficient of axial fan, improve fan vibration, reduce fan noise and design cost; Simultaneously; Make axial fan have the characteristics of high load, above-mentioned characteristic makes axial fan can be applicable to air conditioner outdoor machine preferably, and can improve refrigerating capacity, heating capacity and the Energy Efficiency Ratio of air conditioner.
Description of drawings
Fig. 1 is the structural representation of the utility model axial-flow windwheel structure preferred embodiment;
Fig. 2 is the local enlarged diagram of fan blade in the axial-flow windwheel structure shown in Figure 1.
Clearer for the technological scheme that makes the utility model, clear, will combine accompanying drawing to do further to detail below.
Embodiment
The utility model embodiment's solution mainly is: cause and the V-type serrated slot of discontinuous arrangement in that at least five of the trailing edge settings of fan blade are not of uniform size; The end point of each V-type serrated slot and the two-end-point of trailing edge are in line; Simultaneously crow flight distance and arc length between V-type serrated slot and the fan blade trailing edge end points are optimized design; To improve air quantity, the efficient of axial fan; Reduce fan noise and design cost etc., thereby when making axial fan be applied on the air conditioner outdoor machine, can improve refrigerating capacity, heating capacity and the Energy Efficiency Ratio of air conditioner.
As shown in Figure 1, Fig. 1 is the structural representation of the utility model axial-flow windwheel structure preferred embodiment; Originally execute a kind of axial-flow windwheel structure that example proposes; Be installed on the axial fan; It comprises wheel hub 101 and 102, three fan blades 102 of three fan blades of being installed on the wheel hub 101 are the center with fan blade 102 rotating center axis, is equidistant distribution with 120 degree ± 5 degree; Fan blade 102 profiles are reaping hook shape wide outside and narrow inside, and are the three dimensional space distorted shape.
Wherein, the arc limit that is positioned at the evagination of reaping hook afterbody is the trailing edge 104 of fan blade 102, with the trailing edge of fan blade 102 104 relatively and the arc limit that is positioned at the indent of reaping hook point of a knife side be the leading edge 105 of fan blade 102.
In the present embodiment; The trailing edge 104 of fan blade 102 has five not of uniform size causing and the V-type serrated slot 103 of discontinuous arrangement; V-type serrated slot 103 is to leading edge 105 depressions of fan blade 102; It is protruding to form arc top between the two adjacent V-type serrated slot 103, and the top of the V-type serrated slot 103 of same fan blade 102 forms an arcuate segment.
Simultaneously, the two ends of the bottom of each V-type serrated slot 103 and trailing edge 104 are positioned on the same reference line, that is to say, in floor map shown in Figure 1, the two-end-point of the end of each V-type serrated slot 103 point and trailing edge 104 in line.
Said structure can reduce the Radial Flow of wind wheel, reduces the wind wheeling rotor tail, improves air quantity of fan, and reduces the generation of vortex and flow-disturbing, improves fan static pressures and efficient simultaneously, reduces fan power consumption and noise.
In order better to improve the performance of fan on the whole, present embodiment carries out following optimal design to the physical dimension of the V-type serrated slot 103 of fan blade 102.
Particularly; In conjunction with shown in Figure 2; The trailing edge 104 of fan blade 102 is provided with five V-type serrated slot 103; Be respectively near the interior terminal A of wheel hub 101 with away from the outer end points G of wheel hub 101 if set the two-end-point of trailing edge 104, the end point of five V-type serrated slot 103 is by the interior terminal A of trailing edge 104 direction to outer end points G, is expressed as first end point B, second end point C, the 3rd end point D, the 4th end point E and the 5th end successively to put F.
Premises A, B, C, D, E and G are distributed on the AG straight line of Aided Design shown in Figure 2; The distance of the distance of the distance of the distance of the distance of terminal A to the first end point B, some B to the second end first end point C, three ends of some C to the, second end point D, four ends of some D to the 3rd end point E, five ends of some E to the 4th end point F and the 5th end point F are to the distance of outer end points G in representing respectively with straightway AB, BC, CD, DE, EF and the FG of Aided Design, and then the distance relation between premises A, B, C, D, E and the G is following:
The distance A B of interior terminal A to the first end point B with the ratio apart from BC of some B to the second end first end point C is: 0.8～0.9, i.e. and AB=BC* (0.8～0.9);
First end point B to the second end point C equals the distance C D of three ends of some C to the, second end point D, i.e. BC=CD apart from BC;
The distance C D of three ends of second end point C to the point D with the ratio of the distance B E of four ends of some D to the 3rd end point E is: 1.3～1.5, i.e. and CD=DE* (1.3～1.5);
The distance B E of four ends of the 3rd end point D to the point E with the ratio apart from EF of five ends of some E to the 4th end point F is: 1.3～1.5, i.e. and DE=EF* (1.3～1.5);
The ratio apart from FG apart from EF and the 5th end point to outer end points of five ends of the 4th end point E to the point F is: 1.2～1.5, i.e. and EF=FG* (1.2～1.5).
The arc length of in addition, each V-type serrated slot 103 on the trailing edge 104 of arc being divided is done following design:
Above-mentioned five V-type serrated slot 103 are divided into 11 little segmentations with interior terminal A to the arcuate segment between the outer end points G of the trailing edge 104 of fan blade 102; On the fore-and-aft direction from the interior terminal A of trailing edge 104 to outer end points G, adjacent last segmentation is set at the ratio of the arc length of a segmentation afterwards: 1.3～1.6.
Specific as follows:
Five V-type serrated slot 103, two summits separately are set at b, c, d, e, f, g, h, i, j and k by interior terminal A respectively to outer end points G successively, and so, five V-type serrated slot 103 can be expressed as respectively by letter: bBc, dCe, fDg, hEi and jFk.
On circular arc AG, each section circular arc Ab, bc, cd, de, ef, fg, gh, hi, ij, the arc length span of jk and kG is following:
jk＝kG*(1.3～1.6)；
ij＝jk*(1.3～1.6)；
hi＝ij*(1.3～1.6)；
gh＝hi*(1.3～1.6)；
fg＝gh*(1.3～1.6)；
ef＝fg*(1.3～1.6)；
de＝ef*(1.3～1.6)；
cd＝de*(1.3～1.6)；
bc＝cd*(1.3～1.6)；
Ab＝bc*(1.3～1.6)。
The above-mentioned axial-flow windwheel structure of present embodiment through reducing Radial Flow, reduces the fan propeller tail; Can effectively improve air quantity, the efficient of axial fan, improve fan vibration, reduce the generation of vortex and flow-disturbing; Improve fan static pressures and efficient, reduce fan power consumption, noise and design cost; Simultaneously; Can alleviate the weight of fan, reduce the material use amount of fan blade 102, reduce cost of material; In addition; Can also reduce the material use amount of the load and the motor of motor, above-mentioned characteristic makes axial fan can be applicable to air conditioner outdoor machine preferably, and can improve refrigerating capacity, heating capacity and the Energy Efficiency Ratio of air conditioner; Comprehensively falling cost reaches more than 20%.
Need to prove; In other embodiments; The quantity of the V-type serrated slot 103 on the trailing edge 104 of fan blade 102 can also be set to be less than five or more than five according to actual conditions; Wherein the physical dimension of each V-type serrated slot 103 can repeat no more at this with reference to the design principle of the foregoing description.
In addition, being installed in the quantity of the fan blade 102 on the wheel hub 101 also can be according to the practical application scene setting more than three.
In addition, the utility model preferred embodiment also proposes a kind of axial fan, comprises axial-flow windwheel; This axial-flow windwheel comprises the axial-flow windwheel structure described in the foregoing description; Internal structure characteristics about the axial-flow windwheel structure please with reference to the foregoing description, repeat no more at this.
The utility model embodiment axial-flow windwheel structure and axial fan cause and the V-type serrated slot of discontinuous arrangement in that five of the trailing edge settings of fan blade are not of uniform size at least, and the end point of each V-type serrated slot and the two-end-point of trailing edge are in line; Thus axial fan is carried out comparatively comprehensively optimal design; Can effectively improve air quantity, the efficient of axial fan, improve fan vibration, reduce fan noise and design cost; Simultaneously; Make axial fan have the characteristics of high load, above-mentioned characteristic makes axial fan can be applicable to air conditioner outdoor machine preferably, and can improve refrigerating capacity, heating capacity and the Energy Efficiency Ratio of air conditioner.
The above is merely the preferred embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the utility model.
Claims (8)
1. axial-flow windwheel structure; Comprise wheel hub and be installed at least three fan blades on the said wheel hub, said at least three fan blades are the center with fan blade rotating center axis, are equidistant distribution; Said fan blade has trailing edge and the leading edge relative with said trailing edge; It is characterized in that the trailing edge of said fan blade has at least five V-type serrated slot that cause not of uniform size, the end point of each V-type serrated slot and the two-end-point of said trailing edge are in line.
2. axial-flow windwheel structure according to claim 1 is characterized in that, it is protruding to form arc top between the adjacent two said V-type serrated slot, and the top of the V-type serrated slot of same fan blade forms an arcuate segment.
3. axial-flow windwheel structure according to claim 1; It is characterized in that; The trailing edge of said fan blade has five said V-type serrated slot; The two-end-point of said trailing edge is respectively near the interior end points of wheel hub with away from the outer end points of wheel hub, the end of said five V-type serrated slot point by interior end points to outer end points be followed successively by first, second, third and fourth, five ends point; Wherein:
The distance of end points to said first end point with the ratio of the distance of point of said first end to said second end point is in said: 0.8～0.9;
The distance of point of said first end to said second end point equals the distance of point of said second end to point of said the 3rd end;
The distance of point of said second end to said the 3rd end point with the ratio of the distance of point of said the 3rd end to said the 4th end point is: 1.3～1.5;
The distance of point of said the 3rd end to said the 4th end point with the ratio of the distance of point of said the 4th end to said the 5th end point is: 1.3～1.5;
The distance of point of said the 4th end to said the 5th end point with the ratio of point of said the 5th end to the distance of said outer end points is: 1.2～1.5.
4. axial-flow windwheel structure according to claim 3; It is characterized in that; Said trailing edge is an arc; The arcuate segment of the interior end points of said trailing edge between the outer end points is divided into 11 segmentations by said five V-type serrated slot, from the interior end points of said trailing edge to outside on the fore-and-aft direction of end points, adjacent last segmentation with the ratio of the arc length of a segmentation afterwards is: 1.3～1.6.
5. according to each described axial-flow windwheel structure among the claim 1-4, it is characterized in that three said fan blades are installed on the said wheel hub, and said three fan blades are the center with fan blade rotating center axis, be equidistant distribution with 120 degree ± 5 degree.
6. axial-flow windwheel structure according to claim 5 is characterized in that, said fan blade profile is sickle shaped wide outside and narrow inside, and is the three dimensional space distorted shape.
7. an axial fan comprises axial-flow windwheel, and said axial-flow windwheel comprises wheel hub and is installed at least three fan blades on the said wheel hub; Said at least three fan blades are the center with fan blade rotating center axis; Be equidistant distribution, said fan blade has trailing edge and the leading edge relative with said trailing edge, it is characterized in that; The trailing edge of said fan blade has at least five V-type serrated slot that cause not of uniform size, and the end point of each V-type serrated slot and the two-end-point of said trailing edge are in line.
8. axial fan according to claim 7 is characterized in that, said axial-flow windwheel comprises each described axial-flow windwheel structure among the claim 2-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220072856.6U CN202579307U (en) | 2012-02-29 | 2012-02-29 | Axial-flow wind wheel structure and axial-flow fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220072856.6U CN202579307U (en) | 2012-02-29 | 2012-02-29 | Axial-flow wind wheel structure and axial-flow fan |
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| CN202579307U true CN202579307U (en) | 2012-12-05 |
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| CN201220072856.6U Expired - Lifetime CN202579307U (en) | 2012-02-29 | 2012-02-29 | Axial-flow wind wheel structure and axial-flow fan |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588337A (en) * | 2012-02-29 | 2012-07-18 | Tcl空调器(中山)有限公司 | Axial wind wheel structure and axial fan |
| US11286954B1 (en) * | 2018-01-13 | 2022-03-29 | Gd Midea Environment Appliances Mfg Co., Ltd. | Air duct assembly for axial flow fan |
-
2012
- 2012-02-29 CN CN201220072856.6U patent/CN202579307U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588337A (en) * | 2012-02-29 | 2012-07-18 | Tcl空调器(中山)有限公司 | Axial wind wheel structure and axial fan |
| CN102588337B (en) * | 2012-02-29 | 2015-11-18 | Tcl空调器(中山)有限公司 | Axial wind wheel structure and axial fan |
| US11286954B1 (en) * | 2018-01-13 | 2022-03-29 | Gd Midea Environment Appliances Mfg Co., Ltd. | Air duct assembly for axial flow fan |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20151118 |
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| AV01 | Patent right actively abandoned |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |