CN104196756B - Cross-flow fan blade and air conditioner - Google Patents
Cross-flow fan blade and air conditioner Download PDFInfo
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- CN104196756B CN104196756B CN201410321316.0A CN201410321316A CN104196756B CN 104196756 B CN104196756 B CN 104196756B CN 201410321316 A CN201410321316 A CN 201410321316A CN 104196756 B CN104196756 B CN 104196756B
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Abstract
The invention provides a through-flow fan blade, which comprises a fan blade axis and a plurality of blades surrounding the fan blade axis, wherein the blades are arc-shaped, and the longitudinal sections of a first end part and a second end part of each blade are arc-shaped; in the same longitudinal section, a central connecting line of the thickness of the blade is a central line of the blade, the central line of the blade comprises more than three sections of circular arcs, a connecting line between the circle center of the circular arc at the first end part of the blade and the circle center of the circular arc at the second end part of the blade is a chord length, the length of the chord length is L, the maximum distance between the chord length and the central line is a blade height H, and the distance between the projection of the blade height H on the chord length and the circle center of the circular arc at the first end part is L1, wherein L1/L is less than or equal to 0.4, or L1/L. And also relates to an air conditioner. According to the cross-flow fan blade and the air conditioner, the shape of the cross-flow fan blade is a structure with a high front part and a low back part or a structure with a low front part and a high back part, so that the running direction of airflow along the surface of the blade is changed, and the size of a separation area or an attack angle area is reduced, so that the air volume loss is reduced.
Description
Technical field
The present invention relates to household appliance technical field, more particularly, to a kind of through-flow fan blade and air-conditioner.
Background technology
As shown in Figure 1 to Figure 3, existing through-flow fan blade major part is by 35 identical blade circumferentially Unequal distance cloth
Put, the external diameter of through-flow fan blade is D1, the internal diameter of through-flow fan blade is D2；Blade is by outer end circular arc 1, inner circular arc 4 and blade back 2 and
Leaf basin 3 forms.The line of centres as Fig. 3 vane thickness is the center line of blade, and existing vaned center line is the circle of R by single hop radius
Arc forms.Chord length is the inner center of circle (center of circle of inner circular arc 4) and the outer end center of circle (center of circle of the outer end circular arc 1) line of blade,
The length of chord length is L, and the high H of leaf is defined as the ultimate range between the chord length of blade and center line 5, and L1 is the high throwing in chord length of leaf
The distance in the shadow positional distance outer end center of circle, in the medium position of fan blade chord length, L1/L is 0.5, gas for existing vaned leaf height design
Stream passes through multiple blades of through-flow fan blade twice, and the inner of same blade and outer end are entry zone is also exit region,
Air-flow produces the larger angle of attack in the import direction of blade surface, the afterbody of blade produce air-flow separate lead to air quantity to reduce,
Power consumption raises.
Content of the invention
In view of the present situation of prior art, it is an object of the invention to provide a kind of through-flow fan blade and air-conditioner, reduce air quantity
Loss, improves the mechanical efficiency of through-flow fan blade.For achieving the above object, technical scheme is as follows：
A kind of through-flow fan blade, including fan blade axle center and multiple blade around fan blade axle center, described blade is in arcuation, described
The longitudinal section of the first end of blade and the second end is arc-shaped；In same longitudinal section, in the thickness of described blade
Heart line is the center line of described blade, and the center line of described blade includes more than three sections circular arcs, the circle of the first end of described blade
Line between the circular arc center of circle of the second end of the arc center of circle and described blade is chord length, and the length of chord length is L, described chord length with
Ultimate range between described center line is the high H of leaf, the circular arc of described high H the projecting in described chord length of leaf and described first end
The distance between center of circle is L1, wherein, L1/L≤0.4, or L1/L >=0.6.
Wherein in an embodiment, on same longitudinal section, the center line of described blade includes three sections of circular arcs, and respectively
One section of circular arc, second segment circular arc, the 3rd section of circular arc, described first paragraph circular arc, described second segment circular arc and described 3rd section of circular arc
It is sequentially connected.
Wherein in an embodiment, the radius of described first paragraph circular arc is R1, and the radius of described second segment circular arc is R2,
The radius of described 3rd section of circular arc is R3, wherein R1 ＜ R2 ＜ R3.
Wherein in an embodiment, projected length in described chord length for the described first paragraph circular arc is A, described first paragraph
Circular arc is B in the projected length in described chord length and projected length sum in described chord length for the described second segment circular arc, described
Relation between L1 and described A, described B is：A≤L1≤B；
Relation between described B and described L is：B/L ＜ 0.5.
Wherein in an embodiment, the center line of described blade also includes straightway, described first paragraph circular arc, described second
Section circular arc, described 3rd section of circular arc and described straightway are sequentially connected.
Wherein in an embodiment, the ratio between described L1 and described L is 0.2-0.4, i.e. L1/L=0.2-0.4.
Wherein in an embodiment, the ratio between described L1 and described L is 0.6-0.9, i.e. L1/L=0.6-0.9.
Further relate to a kind of air-conditioner, including the described through-flow fan blade of any of the above-described technical scheme.
The invention has the beneficial effects as follows：
The through-flow fan blade of the present invention and air-conditioner, the center line of the blade of through-flow fan blade includes more than three sections circular arcs, through-flow wind
The blade profile of leaf is low or low early and high after structure after front height, changes air-flow along the traffic direction of blade surface, subtracts
, thus reducing air quantity loss, the extension reducing a part near import or afterbody is long for the size in little Disengagement zone or angle of attack region
Degree, reduces the power consumption of through-flow fan blade, improves the mechanical efficiency of through-flow fan blade, improves the air quantity performance of air-conditioner.
Brief description
Fig. 1 is the structural representation of the through-flow fan blade of prior art；
Fig. 2 is the structural representation of the blade of through-flow fan blade shown in Fig. 1；
Fig. 3 is the partial enlarged drawing in A portion in Fig. 1；
Fig. 4 is the blade construction schematic diagram of through-flow fan blade one embodiment of the present invention；
The structural representation that Fig. 5 is three sections of circular arc situations for the center line of blade shown in Fig. 4；
Fig. 6 is three sections of circular arcs and the structural representation of a straightway situation for the center line of blade shown in Fig. 4；
Fig. 7 is the blade height schematic diagram between the center line of blade of through-flow fan blade one embodiment of the present invention and chord length；
Fig. 8 is the blade height comparison diagram of the blade height of through-flow fan blade shown in Fig. 7 and the through-flow fan blade of prior art.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples pair
The through-flow fan blade of the present invention and air-conditioner are further elaborated.It should be appreciated that specific embodiment described herein is only
For explaining the present invention, it is not intended to limit the present invention.
With reference to Fig. 4 to Fig. 6, through-flow fan blade one embodiment of the present invention include fan blade axle center and multiple around fan blade axle center
Blade, blade is in arcuation, and the first end 6 of blade and the longitudinal section of the second end 7 are arc-shaped, wherein, first end 6 with
The outer end circular arc 1 of prior art through-flow fan blade shown in Fig. 2 is identical, the inner circular arc 4 of the second end 7 and prior art shown in Fig. 2
Identical.
In same longitudinal section, the line of centres of the thickness of blade is the center line 5 of blade, and the center line 5 of blade includes three sections
Above circular arc, the line between the circular arc center of circle of the circular arc center of circle of the first end 6 of blade and the second end 7 of blade is string
Long, the length of chord length is L, and the ultimate range between the center line 5 of length L of chord length and blade is the high H of leaf, and the high H of leaf is in described string
The distance between circular arc center of circle of projected position in length and first end 6 is L1, wherein, L1/L≤0.4, or L1/L >=0.6.
Preferably, L1/L=0.2-0.4, or L1/L=0.6-0.9.
As a kind of embodiment, as shown in figure 5, the center line 5 of blade includes three sections of circular arcs, respectively first paragraph circle
Arc, second segment circular arc and the 3rd section of circular arc, first paragraph circular arc, second segment circular arc and the 3rd section of circular arc are sequentially connected.First paragraph is justified
The radius of arc is R1, and the radius of second segment circular arc is R2, and the radius of the 3rd section of circular arc is R3, wherein R1 ＜ R2 ＜ R3, L1/L=
0.3.
Projected length in chord length for the first paragraph circular arc is A, projected length in chord length for the first paragraph circular arc and second segment
Projected length sum in chord length for the circular arc is B, wherein：A≤L1≤B, B/L ＜ 0.5.So reduce air quantity loss further.
As a kind of embodiment, as shown in fig. 6, the center line 5 of blade also includes straightway L2, first paragraph circular arc,
Two-stage nitration circular arc, the 3rd section of circular arc and straightway L2 are sequentially connected, that is, the center line of blade is made up of three sections of circular arcs and a straightway.
The through-flow fan blade of above example is simulated contrast, passing through in above example with the through-flow fan blade of prior art
When the chord length of the blade of through-flow fan blade of the chord length of blade of stream fan blade and prior art is equal, as shown in fig. 7, implementing above
The chord length of the blade of through-flow fan blade of the chord length of the blade of through-flow fan blade of example and prior art all 14 positions of corresponding selection, 14
The corresponding blade height in individual position is respectively H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, its
In, the corresponding value of H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14 is as shown in the table：
| The blade (mm) of the through-flow fan blade of prior art | The blade (mm) of the through-flow fan blade of the present embodiment | |
| H1 | 0.55 | 0.8 |
| H2 | 2.4 | 5.67 |
| H3 | 4.24 | 8.47 |
| H4 | 5.98 | 10.18 |
| H5 | 7.51 | 10.9 |
| H6 | 8.71 | 10.84 |
| H7 | 9.48 | 10.16 |
| H8 | 9.75 | 9.04 |
| H9 | 9.48 | 7.69 |
| H10 | 8.67 | 6.32 |
| H11 | 7.38 | 5.04 |
| H12 | 5.72 | 3.77 |
| H13 | 3.8 | 2.47 |
| H14 | 1.73 | 1.13 |
In upper table the blade height relativity curve of each position as shown in figure 8, as seen from Figure 8, prior art
The blade of through-flow fan blade be the low profile in middle high both sides, and the fan blade of the through-flow fan blade of above example, with leaf high in string
Centered on the projection of length direction, the blade height along each position of left and right in center line direction is respectively less than the high H of leaf, i.e. blade profile
It is low or low early and high after structure after front height；Near cylindrical initiating terminal, leaf change air-flow is along blade surface for leaf high position
Traffic direction, reduce the size in Disengagement zone or angle of attack region thus reduce loss.
The invention still further relates to a kind of air-conditioner, including the through-flow fan blade of any of the above-described technical scheme, pass through because air-conditioner removes
It is prior art outside stream fan blade, no longer repeat one by one herein.
The through-flow fan blade of above example and air-conditioner, the center line of the blade of through-flow fan blade includes more than three sections circular arcs, passes through
The blade profile of stream fan blade is low or low early and high after structure after front height, changes air-flow along the operation side of blade surface
To reducing the size in Disengagement zone or angle of attack region thus reducing air quantity loss, reducing a part near import or afterbody
Development length, reduces the power consumption of through-flow fan blade, improves the mechanical efficiency of through-flow fan blade, improves the air quantity performance of air-conditioner.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (5)
1. a kind of through-flow fan blade it is characterised in that：
Including fan blade axle center and multiple blade around fan blade axle center, described blade is in arcuation, the first end of described blade and
The longitudinal section of the second end is arc-shaped；In same longitudinal section, the line of centres of the thickness of described blade is described blade
Center line, the center line of described blade includes three sections of circular arcs, the of the circular arc center of circle of the first end of described blade and described blade
Line between the circular arc center of circle of two ends is chord length, and the length of chord length is L, the maximum between described chord length and described center line away from
From for the high H of leaf, the distance between projection in described chord length for the high H of described leaf and circular arc center of circle of described first end are L1,
Wherein, L1/ L≤0.4, or L1/L >=0.6；
On same longitudinal section, three sections of circular arcs of the center line of described blade be respectively first paragraph circular arc, second segment circular arc, the 3rd section
Circular arc, described first paragraph circular arc, described second segment circular arc and described 3rd section of circular arc are sequentially connected；
Projected length in described chord length for the described first paragraph circular arc is A, projection in described chord length for the described first paragraph circular arc
Length and projected length sum in described chord length for the described second segment circular arc are B；
Relation between described L1 and described A, described B is：A≤L1≤B；
When L1/ L≤0.4, the relation between described B and described L is：B/L ＜ 0.5；
The radius of described first paragraph circular arc is R1, and the radius of described second segment circular arc is R2, and the radius of described 3rd section of circular arc is
R3, wherein R1 ＜ R2 ＜ R3.
2. through-flow fan blade according to claim 1 it is characterised in that：
The center line of described blade also includes straightway, described first paragraph circular arc, described second segment circular arc, described 3rd section of circular arc and
Described straightway is sequentially connected.
3. the through-flow fan blade according to any one of claim 1-2 it is characterised in that：
Ratio between described L1 and described L is 0.2-0.4, i.e. L1/L=0.2-0.4.
4. the through-flow fan blade according to any one of claim 1-2 it is characterised in that：
Ratio between described L1 and described L is 0.6-0.9, i.e. L1/L=0.6-0.9.
5. a kind of air-conditioner it is characterised in that：
Including the through-flow fan blade described in any one of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410321316.0A CN104196756B (en) | 2014-07-07 | 2014-07-07 | Cross-flow fan blade and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410321316.0A CN104196756B (en) | 2014-07-07 | 2014-07-07 | Cross-flow fan blade and air conditioner |
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| Publication Number | Publication Date |
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| CN104196756A CN104196756A (en) | 2014-12-10 |
| CN104196756B true CN104196756B (en) | 2017-03-01 |
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| CN201410321316.0A Active CN104196756B (en) | 2014-07-07 | 2014-07-07 | Cross-flow fan blade and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104564806A (en) * | 2014-12-18 | 2015-04-29 | 徐工集团工程机械股份有限公司 | Blade, centrifugal fan impeller and centrifugal fan |
| CN104632647A (en) * | 2015-02-05 | 2015-05-20 | 镇江市丹徒区粮机厂有限公司 | Efficient TLGF-HY-55-I material conveying fan |
| CN104763654A (en) * | 2015-02-05 | 2015-07-08 | 镇江市丹徒区粮机厂有限公司 | TLGF-HY-90-I type high-efficiency material conveying fan |
| CN106122047B (en) * | 2016-08-23 | 2018-01-05 | 佛山市南海九洲普惠风机有限公司 | A kind of efficiently Jing Yin turbine |
| CN106122091B (en) * | 2016-08-23 | 2017-11-24 | 佛山市南海九洲普惠风机有限公司 | With antecurvature efficient Jing Yin impeller |
| CN106122092B (en) * | 2016-08-23 | 2017-11-28 | 佛山市南海九洲普惠风机有限公司 | A kind of novel blade and the impeller using the fan blade |
| CN108317101A (en) * | 2018-03-27 | 2018-07-24 | 广东顺威精密塑料股份有限公司 | A kind of tab construction of cross flow fan |
| CN110617239B (en) * | 2019-10-14 | 2021-01-01 | 尚科宁家(中国)科技有限公司 | Dust collector impeller and dust collector |
| WO2024084537A1 (en) * | 2022-10-17 | 2024-04-25 | 三菱電機株式会社 | Blower device |
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| US5586053A (en) * | 1992-08-14 | 1996-12-17 | Goldstar Co., Ltd. | Method to determine the blade shape of a sirocco fan |
| CN200989326Y (en) * | 2006-11-14 | 2007-12-12 | 珠海格力电器股份有限公司 | Fan blade and centrifugal fan blade with same |
| CN101451499A (en) * | 2007-11-28 | 2009-06-10 | 蔡心一 | Constant directional four-quadrant full lift force vertical axis wind motor |
| CN204041538U (en) * | 2014-07-07 | 2014-12-24 | 珠海格力电器股份有限公司 | Cross-flow fan blade and air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009094A (en) * | 1998-06-29 | 2000-01-11 | Matsushita Electric Ind Co Ltd | Impeller |
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2014
- 2014-07-07 CN CN201410321316.0A patent/CN104196756B/en active Active
Patent Citations (4)
| 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 |
| CN200989326Y (en) * | 2006-11-14 | 2007-12-12 | 珠海格力电器股份有限公司 | Fan blade and centrifugal fan blade with same |
| CN101451499A (en) * | 2007-11-28 | 2009-06-10 | 蔡心一 | Constant directional four-quadrant full lift force vertical axis wind motor |
| CN204041538U (en) * | 2014-07-07 | 2014-12-24 | 珠海格力电器股份有限公司 | Cross-flow fan blade and air conditioner |
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| CN104196756A (en) | 2014-12-10 |
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