CN104196756A - Cross-flow fan blade and air conditioner - Google Patents
Cross-flow fan blade and air conditioner Download PDFInfo
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- CN104196756A CN104196756A CN201410321316.0A CN201410321316A CN104196756A CN 104196756 A CN104196756 A CN 104196756A CN 201410321316 A CN201410321316 A CN 201410321316A CN 104196756 A CN104196756 A CN 104196756A
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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, relate in particular to a kind of through-flow fan blade and air conditioner.
Background technique
As shown in Figure 1 to Figure 3, existing through-flow fan blade major part is by 35 identical blades along circumference equidistant placement not, and the external diameter of through-flow fan blade is D1, and the internal diameter of through-flow fan blade is D2; Blade is comprised of outer end circular arc 1, inner circular arc 4 and blade back 2 and leaf basin 3.As the center line that the line of centres of Fig. 3 vane thickness is blade, the circular arc that existing vaned center line is R by single hop radius forms.Chord length is the inner center of circle (center of circle of inner circular arc 4) and the center of circle, outer end (center of circle of the outer end circular arc 1) line of blade, the length of chord length is L, the high H of leaf is defined as the chord length of blade and the ultimate range between center line 5, L1 is that the high projection position in chord length of leaf is apart from the distance in the center of circle, outer end, the high design of existing vaned leaf is at the medium position of fan blade chord length, L1/L is 0.5, air-flow passes through a plurality of blades of through-flow fan blade for twice, the inner of same blade and outer end be entry zone be also exit region, air-flow the importer of blade surface to producing the larger angle of attack, afterbody generation airflow breakaway at blade causes air quantity to reduce, power consumption raises.
Summary of the invention
In view of the present situation of prior art, the object of the present invention is to provide a kind of through-flow fan blade and air conditioner, reduce air quantity loss, improve the mechanical efficiency of through-flow fan blade.For achieving the above object, technological scheme of the present invention is as follows:
A through-flow fan blade, comprises fan blade axle center and a plurality of blade around fan blade axle center, and described blade is arcuation, and the first end of described blade and the longitudinal section of the second end are circular-arc; In same longitudinal section, the line of centres of the thickness of described blade is the center line of described blade, the center line of described blade comprises three sections of above circular arcs, line between the circular arc center of circle of the circular arc center of circle of the first end of described blade and the second end of described blade is chord length, the length of chord length is L, ultimate range between described chord length and described center line is the high H of leaf, the projection of the high H of described leaf in described chord length and the distance between the circular arc center of circle of described first end are L1, wherein, L1/L≤0.4, or L1/L >=0.6.
In an embodiment, on same longitudinal section, the center line of described blade comprises three sections of circular arcs therein, is respectively first paragraph circular arc, second segment circular arc, the 3rd section of circular arc, and described first paragraph circular arc, described second segment circular arc and described the 3rd section of circular arc are connected successively.
In an embodiment, the radius of described first paragraph circular arc is R1 therein, and the radius of described second segment circular arc is R2, and the radius of described the 3rd section of circular arc is R3, wherein R1 < R2 < R3.
Therein in an embodiment, the projected length of described first paragraph circular arc in described chord length is A, projected length and the described second segment circular arc projected length sum on described chord length of described first paragraph circular arc in described chord length is B, and the pass between described L1 and described A, described B is: A≤L1≤B;
Pass between described B and described L is: B/L < 0.5.
In an embodiment, the center line of described blade also comprises straightway therein, and described first paragraph circular arc, described second segment circular arc, described the 3rd section of circular arc are connected successively with described straightway.
In an embodiment, the ratio between described L1 and described L is 0.2-0.4, i.e. L1/L=0.2-0.4 therein.
In an embodiment, the ratio between described L1 and described L is 0.6-0.9, i.e. L1/L=0.6-0.9 therein.
Also relate to a kind of air conditioner, comprise the described through-flow fan blade of above-mentioned arbitrary technological scheme.
The invention has the beneficial effects as follows:
Through-flow fan blade of the present invention and air conditioner, the center line of the blade of through-flow fan blade comprises three sections of above circular arcs, the blade profile of through-flow fan blade is low after front height, or low early and high after structure, has changed the traffic direction of air-flow along blade surface, thereby the size that reduces separation zone or angle of attack region reduces air quantity loss, reduced a part of extended length near import or afterbody, reduce the power consumption of through-flow fan blade, improve the mechanical efficiency of through-flow fan blade, improve the air quantity performance of air conditioner.
Accompanying drawing explanation
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 of A portion in Fig. 1;
Fig. 4 is through-flow fan blade one embodiment's of the present invention blade structure schematic diagram;
Fig. 5 is that the center line of blade shown in Fig. 4 is the structural representation of three sections of circular arc situations;
Fig. 6 is that the center line of blade shown in Fig. 4 is the structural representation of three sections of circular arcs and a straightway situation;
Fig. 7 is the through-flow fan blade one embodiment's of the present invention center line of blade and the blade height schematic diagram between 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.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, through-flow fan blade of the present invention and air conditioner are further elaborated.Should be appreciated that specific embodiment described herein, only for explaining the present invention, 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 comprises fan blade axle center and a plurality of blade around fan blade axle center, blade is arcuation, the first end 6 of blade and the longitudinal section of the second end 7 are circular-arc, wherein, first end 6 is identical with the outer end circular arc 1 of the through-flow fan blade of prior art shown in Fig. 2, and the second end 7 is identical with the inner circular arc 4 of prior art shown in Fig. 2.
In same longitudinal section, the line of centres of the thickness of blade is the center line 5 of blade, the center line 5 of blade comprises three sections of above circular arcs, 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 chord length, and the length of chord length is L, and the ultimate range between the length L of chord length and the center line of blade 5 is the high H of leaf, the projection position of the high H of leaf in described chord length and the distance between the circular arc center of circle of first end 6 are 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 comprises three sections of circular arcs, is respectively first paragraph circular arc, second segment circular arc and the 3rd section of circular arc, and first paragraph circular arc, second segment circular arc and the 3rd section of circular arc are connected successively.The radius of first paragraph circular 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, R1 < R2 < R3 wherein, L1/L=0.3.
The projected length of first paragraph circular arc in chord length is A, and projected length and the second segment circular arc projected length sum on chord length of first paragraph circular arc in chord length is B, wherein: A≤L1≤B, B/L < 0.5.The loss of so further reduction air quantity.
As a kind of embodiment, as shown in Figure 6, the center line 5 of blade also comprises straightway L2, and first paragraph circular arc, second segment circular arc, the 3rd section of circular arc are connected successively with straightway L2, that is the center line of blade by three sections of circular arcs and always line segment form.
Above embodiment's through-flow fan blade and the through-flow fan blade of prior art are simulated contrast, when above embodiment's the chord length of blade of through-flow fan blade is equal with the chord length of the blade of the through-flow fan blade of prior art, as shown in Figure 7, in above embodiment's the chord length of blade of through-flow fan blade and the equal correspondence of chord length of the blade of the through-flow fan blade of prior art, choose 14 positions, 14 blade heights corresponding to position are respectively H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, wherein, H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, the value that H14 is corresponding is as shown in the table:
| ? | The blade of the through-flow fan blade of prior art (mm) | The blade of the through-flow fan blade of the present embodiment (mm) |
| 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, the blade of the through-flow fan blade of prior art is the low profiles in middle high both sides, and the fan blade of above embodiment's through-flow fan blade, with the high center that is projected as in chord length direction of leaf, blade height along each position, left and right of center line direction is all less than the high H of leaf, and blade profile is low after front height, or low early and high after structure; Leaf high position is near cylindrical starting point, and leaf change air-flow is along the traffic direction of blade surface, thereby the size that reduces separation zone or angle of attack region reduces the wastage.
The invention still further relates to a kind of air conditioner, comprise the through-flow fan blade of above-mentioned arbitrary technological scheme, because air conditioner is prior art except through-flow fan blade, repeat no longer one by one herein.
Above embodiment's through-flow fan blade and air conditioner, the center line of the blade of through-flow fan blade comprises three sections of above circular arcs, the blade profile of through-flow fan blade is low after front height, or low early and high after structure, has changed the traffic direction of air-flow along blade surface, thereby the size that reduces separation zone or angle of attack region reduces air quantity loss, reduced a part of extended length near import or afterbody, reduce the power consumption of through-flow fan blade, improve the mechanical efficiency of through-flow fan blade, improve the air quantity performance of air conditioner.
The above embodiment has only expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a through-flow fan blade, is characterized in that:
Comprise fan blade axle center and a plurality of blade around fan blade axle center, described blade is arcuation, and the first end of described blade and the longitudinal section of the second end are circular-arc; In same longitudinal section, the line of centres of the thickness of described blade is the center line of described blade, the center line of described blade comprises three sections of above circular arcs, line between the circular arc center of circle of the circular arc center of circle of the first end of described blade and the second end of described blade is chord length, the length of chord length is L, ultimate range between described chord length and described center line is the high H of leaf, the projection of the high H of described leaf in described chord length and the distance between the circular arc center of circle of described first end are L1, wherein, L1/L≤0.4, or L1/L >=0.6.
2. through-flow fan blade according to claim 1, is characterized in that:
On same longitudinal section, the center line of described blade comprises three sections of circular arcs, is respectively first paragraph circular arc, second segment circular arc, the 3rd section of circular arc, and described first paragraph circular arc, described second segment circular arc and described the 3rd section of circular arc are connected successively.
3. according to right, want the through-flow fan blade described in 2, it is characterized in that:
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 the 3rd section of circular arc is R3, wherein R1 < R2 < R3.
4. according to right, want the through-flow fan blade described in 2, it is characterized in that:
The projected length of described first paragraph circular arc in described chord length is A, projected length and the described second segment circular arc projected length sum on described chord length of described first paragraph circular arc in described chord length is B, and the pass between described L1 and described A, described B is: A≤L1≤B;
Pass between described B and described L is: B/L < 0.5.
5. through-flow fan blade according to claim 2, is characterized in that:
The center line of described blade also comprises straightway, and described first paragraph circular arc, described second segment circular arc, described the 3rd section of circular arc are connected successively with described straightway.
6. according to the through-flow fan blade described in claim 1-5 any one, it is characterized in that:
Ratio between described L1 and described L is 0.2-0.4, i.e. L1/L=0.2-0.4.
7. according to the through-flow fan blade described in claim 1-5 any one, it is characterized in that:
Ratio between described L1 and described L is 0.6-0.9, i.e. L1/L=0.6-0.9.
8. an air conditioner, is characterized in that:
Comprise the through-flow fan blade described in claim 1-7 any one.
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 |
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| 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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| CN104196756A true CN104196756A (en) | 2014-12-10 |
| CN104196756B CN104196756B (en) | 2017-03-01 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106122091A (en) * | 2016-08-23 | 2016-11-16 | 佛山市南海九洲普惠风机有限公司 | There is antecurvature efficient quiet impeller |
| CN106122092A (en) * | 2016-08-23 | 2016-11-16 | 佛山市南海九洲普惠风机有限公司 | A kind of novel blade and use the impeller of this fan blade |
| CN106122047A (en) * | 2016-08-23 | 2016-11-16 | 佛山市南海九洲普惠风机有限公司 | A kind of efficient quiet turbine |
| 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 |
| CN110617239A (en) * | 2019-10-14 | 2019-12-27 | 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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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106122091A (en) * | 2016-08-23 | 2016-11-16 | 佛山市南海九洲普惠风机有限公司 | There is antecurvature efficient quiet impeller |
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| 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 |
| 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 |
| 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 |
| CN110617239A (en) * | 2019-10-14 | 2019-12-27 | 尚科宁家(中国)科技有限公司 | Dust collector impeller and dust collector |
| 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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