CN202991623U - Axial flow wind wheel - Google Patents
Axial flow wind wheel Download PDFInfo
- Publication number
- CN202991623U CN202991623U CN 201220282388 CN201220282388U CN202991623U CN 202991623 U CN202991623 U CN 202991623U CN 201220282388 CN201220282388 CN 201220282388 CN 201220282388 U CN201220282388 U CN 201220282388U CN 202991623 U CN202991623 U CN 202991623U
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- CN
- China
- Prior art keywords
- blade
- axial
- flow windwheel
- zone
- outer rim
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an axial flow wind wheel. The axial flow wind wheel comprises at least two blades (3) on a wheel hub (2), wherein the blade (3) is provided with a porous area which is provided with a plurality of through holes (4). The blades (3) are arranged on the wheel hub (2) around a rotation axis of the wind wheel through equal interval or unequal interval. The area of each blade (3) at the outer edge (31) is the porous area. When the axial flow wind wheel rotates, the porous structure at the area next to the outer edge of each blade causes the air of the pressure surface of each blade to inflow a suction surface through the through holes. The kinetic energy of the air on the suction surface of the blade is enlarged and the growth of a boundary layer is restrained, thereby effectively reducing eddy current noise and causing the tone quality to be more soft and comfortable. Simultaneously the porous structure at the area next to the outer edge of the blade reduces wind wheel weight and motor load, and furthermore reduces wind wheel cost and motor power. The axial flow wind wheel is particularly suitable for outdoor unit of an air conditioner.
Description
Technical field
The utility model relates to a kind of axial-flow windwheel, particularly a kind of axial-flow windwheel that is applicable to the air conditioner outdoor machine group.
Background technique
Mostly adopt axial-flow windwheel to dispel the heat in existing air conditioner outdoor machine group, axial-flow windwheel comprises that two of being arranged on wheel hub and two are with upper blade, blade centered by the rotating center axis of wind wheel equidistantly or unequal-interval be distributed on wheel hub, during the rotation of common blade structure axial-flow windwheel, easily cause the accumulation of low energy fluid on blade suction surface, form larger-size vortex on the suction surface of blade, produce higher aerodynamic noise when causing the wind wheel running.Test factually analysis, in the noise of outdoor unit, 50%-70% is that aerodynamic noise by axial-flow windwheel causes.
Summary of the invention
Thereby the purpose of this utility model is to provide a kind of kinetic energy by the increase suction surface to suppress boundary layer growth reduction eddy current crack alleviates wind wheel weight and motor load simultaneously, reduce the axial-flow windwheel of wind wheel cost and power of motor, to overcome deficiency of the prior art.
A kind of axial-flow windwheel by this purpose design comprises being arranged at least two blades on wheel hub, is provided with the passization zone that is provided with some through holes on its Leaf.
Above-mentioned blade centered by the rotating center axis of wind wheel equidistantly or unequal-interval be distributed on wheel hub, blade is the passization zone in the zone of its blade outer rim.
The external diameter of above-mentioned axial-flow windwheel is defined as D
1, hub diameter is defined as D
2, set (D
1-D
2)/2 are blade height R
m, A place, the position radius of the passization zone beginning of blade outer rim is defined as R
A, (R is arranged
A-D
2/ 2)/R
m0.1; B place, the position radius that finish in blade outer rim (31) passization zone is defined as R
B, (R is arranged
B– D
2/ 2)/R
m＜0.99.
The height of above-mentioned axial-flow windwheel is defined as H, and near the blade outer rim, A place, the position height of passization zone beginning is defined as H
A, H is arranged
A/ H〉0.01; Near B place, the position height that the blade outer rim, finish in the passization zone is defined as H
B, H is arranged
B/ H＜0.99.
Above-mentioned is c with the distance definition between passization adjacent two through holes in zone (4) of blade outer rim
1, c
2, c
3... c
N-1,N 〉=2, n is the number of the regional through hole of blade passization, the diameter of blade passization zone through hole (4) is defined as d
1, d
2, d
3... d
n，(n 〉=2), c
n-1With d
n-1Ratio is defined as δ, δ=c
n-1/ d
n-1, δ＞1 wherein.
The passization zone of above-mentioned axial-flow windwheel blade outer rim, the distance c between adjacent through-holes
1, c
2, c
3... c
n-1Equal and opposite in direction or do not wait the diameter d of through hole
1, d
2, d
3... d
nEqual and opposite in direction or do not wait.
The through hole in above-mentioned axial-flow windwheel blade outer rim pass zone be shaped as circle, ellipse, polygonal and other combinations irregularly shaped or some above shapes.
The through hole in above-mentioned axial-flow windwheel blade outer rim pass zone is single, and the spacing of single through hole equates or be unequal.
The through hole in the pass zone of above-mentioned axial-flow windwheel blade outer rim is many rows, and the quantity of every exhausting hole equates or do not wait.
The through hole in above-mentioned axial-flow windwheel blade outer rim pass zone is many rows, and the spacing of every exhausting hole equates or be unequal.
During the rotation of the utility model axial-flow windwheel, the pass structure of blade outer rim near zone makes the gas via through holes of blade pressure surface flow into suction surface, changed the pressure distribution on the blade, increased the kinetic energy of gas on the blade suction surface, suppressed the growth in boundary layer, thereby effectively reduce eddy current crack and make tonequality softer, comfortable, the pass structure of blade outer rim near zone has alleviated wind wheel weight and motor load simultaneously, has reduced wind wheel cost and power of motor.The utility model is particularly useful for the air conditioner outdoor machine group.
Description of drawings
Fig. 1 is the utility model axial-flow windwheel one embodiment's perspective view.
Fig. 2 is the utility model axial-flow windwheel impeller diameter definition structure schematic diagram.
Fig. 3 is the utility model axial-flow windwheel impeller height definition structure schematic diagram.
Fig. 4 is the utility model blade pass region apertures diameter and hole pitch definition structure schematic diagram.
Fig. 5 is that the utility model blade pass zone is the structural representation of two row's circular holes.
Fig. 6 is that the utility model blade pass zone is the structural representation of three row's circular holes.
Fig. 7 is conventional axial-flow windwheel perspective view.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
In each figure, 1 is axial-flow windwheel, and 2 is wheel hub, and 3 is blade, and 31 is the blade outer rim, and 4 is the through hole in the pass zone, D
1Be the external diameter of axial-flow windwheel, D
2Be hub diameter, R
mBe blade height, R
ABe near the radius at the A place, position of the passization zone beginning blade outer rim, R
BBe near the radius at the B place, position of the passization zone end blade outer rim, H is the wind wheel height, H
ABe near A place, the position height of the passization zone beginning blade outer rim, H
BBe B place, the position height that finish near the passization zone blade outer rim, c
1, c
2, c
3... c
n-1Be the distance between adjacent two through holes in blade passization zone, d
1, d
2, d
3... d
nBe the diameter of the regional through hole of blade passization, δ is the ratio of blade passization zone through-hole spacing and through-hole diameter.
Referring to Fig. 1, axial-flow windwheel 1 comprises the blade 3 that is arranged on wheel hub 2, blade 3 is of similar shape and setting angle, blade 3 centered by the rotating center axis of wind wheel 1 equidistantly or unequal-interval be distributed on wheel hub 2, the near zone of the outer rim 31 of blade 3 is blade pass zones 4, and the pass zone of blade outer rim 31 is provided with 1 exhausting hole 4.Above-mentioned blade outer rim 31 refers near the position of the outermost profile of blade 3.
Referring to Fig. 2, the external diameter of axial-flow windwheel is defined as D
1, hub diameter is defined as D
2, set (D
1-D
2)/2 are blade height R
m, near the blade outer rim, A place, the position radius of passization zone beginning is defined as R
A, (R is arranged
A-D
2/ 2)/R
m0.1; Near B place, the position radius that the blade outer rim, finish in the passization zone is defined as R
B, (R is arranged
B– D
2/ 2)/R
m＜0.99.
With reference to Fig. 3, the axial-flow windwheel height is defined as H, and near the blade outer rim, A place, the position height of passization zone beginning is defined as H
A, H is arranged
A/ H〉0.01; Near B place, the position height that the blade outer rim, finish in the passization zone is defined as H
B, H is arranged
B/ H＜0.99.
With reference to Fig. 4, be c with the distance definition between adjacent two through holes in blade passization zone
1, c
2, c
3... c
n-1, n 〉=2, n is the number of blade pass regional perforation, the d that the diameter of the regional through hole of blade passization is defined as
1, d
2, d
3... d
n, (n 〉=2), c
n-1With d
n-1Ratio is defined as δ, δ=c
n-1/ d
n-1, δ＞1 wherein.The blade structure of pass can make the gas of pressure side flow into to some extent suction surface by through hole, increase the kinetic energy of gas on suction surface, active volume phyllidium sheet suction surface low energy fluid is piled up, suppress the growth in boundary layer, thereby effectively reduce the eddy current noise of wind wheel, reduce wind wheel noise 1.0 dB～3.0dB, power of motor reduces by 10% left and right.
Referring to Fig. 5, be the structural representation of 2 row's circular holes near pass zone 4 the utility model axial-flow windwheel blade outer rim.
Referring to Fig. 6, be the structural representation of 3 row's circular holes near pass zone 4 the utility model axial-flow windwheel blade outer rim.
Near the utility model axial-flow windwheel blade outer rim, the shape of through holes in pass zone 32 can also be ellipse, polygonal and other combinations irregularly shaped or some above shapes.
Referring to Fig. 7, conventional axial-flow windwheel blade anapsid structure.
Claims (1)
1. an axial-flow windwheel, comprise being arranged at least two blades (3) on wheel hub (2), it is characterized in that being provided with on blade (3) the passization zone that is provided with some through holes (4); Above-mentioned blade (3) centered by the rotating center axis of wind wheel equidistantly or unequal-interval be distributed on wheel hub (2), blade (3) is the passization zone in the zone of its blade outer rim (31).
2, axial-flow windwheel according to claim 1 is characterized in that the external diameter of above-mentioned axial-flow windwheel is defined as D
1, hub diameter is defined as D
2, set (D
1-D
2)/2 are blade height R
m, A place, the position radius of the passization zone beginning of blade outer rim (31) is defined as R
A, (R is arranged
A-D
2/ 2)/R
m0.1; B place, the position radius that finish in blade outer rim (31) passization zone is defined as R
B, (R is arranged
B– D
2/ 2)/R
m＜0.99.
3, axial-flow windwheel according to claim 1 is characterized in that the height of above-mentioned axial-flow windwheel is defined as H, and near the blade outer rim, A place, the position height of passization zone beginning is defined as H
A, H is arranged
A/ H〉0.01; Near B place, the position height that the blade outer rim, finish in the passization zone is defined as H
B, H is arranged
B/ H＜0.99.
4, axial-flow windwheel according to claim 1 is characterized in that the passization of above-mentioned blade outer rim (31) is regional, and the distance definition between adjacent two through holes (4) is c
1, c
2, c
3... c
N-1,N 〉=2, n is the number of the regional through hole of blade passization, the diameter of blade passization zone through hole (4) is defined as d
1, d
2, d
3... d
n，(n 〉=2), c
n-1With d
n-1Ratio is defined as δ, δ=c
n-1/ d
n-1, δ＞1 wherein.
5, axial-flow windwheel according to claim 1 is characterized in that the passization of above-mentioned axial-flow windwheel blade outer rim (31) is regional, the distance c between adjacent through-holes (4)
1, c
2, c
3... c
n-1Equal and opposite in direction or do not wait the diameter d of through hole
1, d
2, d
3... d
nEqual and opposite in direction or do not wait.
6, the described axial-flow windwheel of according to claim 1 to 5 any one, it is characterized in that above-mentioned axial-flow windwheel blade outer rim (31) pass zone through hole (4) be shaped as circle, ellipse, polygonal and other combinations irregularly shaped or some above shapes.
7, axial-flow windwheel according to claim 6 is characterized in that the through hole (4) in above-mentioned axial-flow windwheel blade outer rim (31) pass zone for single, and the spacing of single through hole (4) equates or be unequal.
8, axial-flow windwheel according to claim 6 is characterized in that the through hole (4) in the pass zone of above-mentioned axial-flow windwheel blade outer rim (31) is many rows, and the quantity of every exhausting hole (4) equates or do not wait.
9, axial-flow windwheel according to claim 8 is characterized in that the through hole (4) in above-mentioned axial-flow windwheel blade outer rim (31) pass zone is many rows, and the spacing of every exhausting hole (4) equates or be unequal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282388 CN202991623U (en) | 2012-06-15 | 2012-06-15 | Axial flow wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282388 CN202991623U (en) | 2012-06-15 | 2012-06-15 | Axial flow wind wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991623U true CN202991623U (en) | 2013-06-12 |
Family
ID=48562807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220282388 Expired - Fee Related CN202991623U (en) | 2012-06-15 | 2012-06-15 | Axial flow wind wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991623U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705264A (en) * | 2012-06-15 | 2012-10-03 | 美的集团有限公司 | Axial flow wind wheel |
| CN112049819A (en) * | 2020-08-31 | 2020-12-08 | 青岛海尔空调电子有限公司 | Wind wheel, fan and air conditioner outdoor unit |
| WO2021087640A1 (en) * | 2019-11-04 | 2021-05-14 | 江苏大学 | Blade tip structure for suppressing tip leakage vortex of axial-flow pump as well as cavitation thereof |
-
2012
- 2012-06-15 CN CN 201220282388 patent/CN202991623U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705264A (en) * | 2012-06-15 | 2012-10-03 | 美的集团有限公司 | Axial flow wind wheel |
| WO2021087640A1 (en) * | 2019-11-04 | 2021-05-14 | 江苏大学 | Blade tip structure for suppressing tip leakage vortex of axial-flow pump as well as cavitation thereof |
| CN112049819A (en) * | 2020-08-31 | 2020-12-08 | 青岛海尔空调电子有限公司 | Wind wheel, fan and air conditioner outdoor unit |
| WO2021233483A1 (en) * | 2020-08-31 | 2021-11-25 | 青岛海尔空调电子有限公司 | Impeller, fan, and air conditioner outdoor unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20180615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |