CN204041538U - Through-flow fan blade and air conditioner - Google Patents
Through-flow fan blade and air conditioner Download PDFInfo
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- CN204041538U CN204041538U CN201420373123.5U CN201420373123U CN204041538U CN 204041538 U CN204041538 U CN 204041538U CN 201420373123 U CN201420373123 U CN 201420373123U CN 204041538 U CN204041538 U CN 204041538U
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Abstract
The utility model provides a kind of through-flow fan blade, and comprise fan blade axle center and multiple blade around fan blade axle center, blade is arcuation, and the first end of blade and the longitudinal section of the second end are arc-shaped; In same longitudinal section, the line of centres of the thickness of blade is the center line of blade, the center line of blade comprises more than three sections circular arcs, line between the circular arc center of circle of the circular arc center of circle of the first end of blade and the second end of blade is chord length, and the length of chord length is L, and the ultimate range between chord length and center line is leaf height H, distance between the projection of leaf height H in chord length and the circular arc center of circle of first end is L1, wherein, L1/L≤0.4, or L1/L >=0.6.Also relate to a kind of air conditioner.Through-flow fan blade of the present utility model and air conditioner, the blade profile of through-flow fan blade is low after front height, or low early and high after structure, changes the traffic direction of air-flow along blade surface, reduces the size in separation zone or angle of attack region thus reduces air quantity loss.
Description
Technical field
The utility model relates to household appliance technical field, particularly relates 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 by 35 identical blades circumferentially Unequal distance arrange, the external diameter of through-flow fan blade is D1, and the internal diameter of through-flow fan blade is D2; Blade is made up of outer end circular arc 1, inner circular arc 4 and blade back 2 and leaf basin 3.The line of centres as Fig. 3 vane thickness is the center line of blade, and 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, leaf height H is defined as the ultimate range between the chord length of blade and center line 5, L1 is the distance in the high projection position distance center of circle, outer end in chord length of leaf, the design of existing vaned leaf height is at the medium position of fan blade chord length, L1/L is 0.5, air-flow passes through multiple blades of through-flow fan blade for twice, the inner of same blade and outer end are entry zone is also exit region, air-flow the importer of blade surface to producing the larger angle of attack, producing airflow breakaway at the afterbody of blade causes air quantity to reduce, power consumption raises.
Model utility content
In view of the present situation of prior art, the purpose of this utility model is to provide a kind of through-flow fan blade and air conditioner, reduces air quantity loss, improves the mechanical efficiency of through-flow fan blade.For achieving the above object, the technical solution of the utility model is as follows:
A kind of through-flow fan blade, comprise fan blade axle center and multiple 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 arc-shaped; 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 more than three sections 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 leaf height H, distance between the projection of described leaf height H in described chord length and the circular arc center of circle of described first end 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 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 are connected successively with described 3rd section of circular arc.
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, and the radius of described 3rd section of circular arc is R3, wherein R1 < R2 < R3.
Wherein in an embodiment, the projected length of described first paragraph circular arc in described chord length is A, the projected length of described first paragraph circular arc in described chord length and the projected length sum of described second segment circular arc in described chord length are 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.
Wherein in an embodiment, the center line of described blade also comprises straightway, and described first paragraph circular arc, described second segment circular arc, described 3rd section of circular arc are connected successively with described straightway.
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.
Also relate to a kind of air conditioner, comprise the described through-flow fan blade of above-mentioned arbitrary technological scheme.
The beneficial effects of the utility model are:
Through-flow fan blade of the present utility model and air conditioner, the center line of the blade of through-flow fan blade comprises more than three sections circular arcs, the blade profile of through-flow fan blade is low after front height, or low early and high after structure, changes the traffic direction of air-flow along blade surface, reduce the size in separation zone or angle of attack region thus reduce air quantity loss, reduce the extended length of the close import of a part 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 in A portion in Fig. 1;
Fig. 4 is the blade structure schematic diagram of through-flow fan blade one embodiment of the present utility model;
The center line that Fig. 5 is blade shown in Fig. 4 is the structural representation of three sections of circular arc situations;
The center line that Fig. 6 is blade shown in Fig. 4 is the structural representation of three sections of circular arcs and a straightway situation;
Fig. 7 is the blade height schematic diagram between the center line of the blade of through-flow fan blade one embodiment of the present utility model and chord length;
The blade height comparison diagram that Fig. 8 is 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 the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, through-flow fan blade of the present utility model and air conditioner are further elaborated.Should be appreciated that specific embodiment described herein only for explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 4 to Fig. 6, through-flow fan blade one embodiment of the present utility model comprises fan blade axle center and multiple 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 arc-shaped, 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 more than three sections 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 5 of blade is leaf height H, distance between the projection position of leaf height H in described chord length and the circular arc center of circle of 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 comprises three sections of circular arcs, and be respectively first paragraph circular arc, second segment circular arc and the 3rd section of circular arc, first paragraph circular arc, second segment circular arc are connected successively with the 3rd section of circular arc.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, wherein R1 < R2 < R3, L1/L=0.3.
The projected length of first paragraph circular arc in chord length is A, and the projected length of first paragraph circular arc in chord length and the projected length sum of second segment circular arc in chord length are 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.
The through-flow fan blade of above embodiment and the through-flow fan blade of prior art carry out simulation and contrast, when the chord length of the blade of the chord length of the blade of the through-flow fan blade of above embodiment and the through-flow fan blade of prior art is equal, as shown in Figure 7, 14 positions are chosen in the equal correspondence of chord length of the blade of the chord length of the blade of the through-flow fan blade of above embodiment and the through-flow fan blade of prior art, blade height corresponding to 14 positions is 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 (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, 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 the through-flow fan blade of above embodiment, center is projected as in chord length direction so that leaf is high, blade height along each position, left and right in center line direction is all less than leaf height H, and namely 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, along the traffic direction of blade surface, reduces the size in separation zone or angle of attack region thus reduces the wastage.
The utility model also relates to a kind of air conditioner, comprises the through-flow fan blade of above-mentioned arbitrary technological scheme, because air conditioner is prior art except through-flow fan blade, repeats no longer one by one herein.
The through-flow fan blade of above embodiment and air conditioner, the center line of the blade of through-flow fan blade comprises more than three sections circular arcs, the blade profile of through-flow fan blade is low after front height, or low early and high after structure, changes the traffic direction of air-flow along blade surface, reduce the size in separation zone or angle of attack region thus reduce air quantity loss, reduce the extended length of the close import of a part 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 only have expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent 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 multiple 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 arc-shaped; 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 more than three sections 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 leaf height H, distance between the projection of described leaf height H in described chord length and the circular arc center of circle of described first end is 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 are connected successively with described 3rd section of circular arc.
3. through-flow fan blade according to claim 2, 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 3rd section of circular arc is R3, wherein R1 < R2 < R3.
4. through-flow fan blade according to claim 2, is characterized in that:
The projected length of described first paragraph circular arc in described chord length is A, the projected length of described first paragraph circular arc in described chord length and the projected length sum of described second segment circular arc in described chord length are 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 3rd section of circular arc are connected successively with described straightway.
6. the through-flow fan blade according to any one of claim 1-5, 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. the through-flow fan blade according to any one of claim 1-5, 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 any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373123.5U CN204041538U (en) | 2014-07-07 | 2014-07-07 | Through-flow fan blade and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373123.5U CN204041538U (en) | 2014-07-07 | 2014-07-07 | Through-flow fan blade and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041538U true CN204041538U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420373123.5U Expired - Lifetime CN204041538U (en) | 2014-07-07 | 2014-07-07 | Through-flow fan blade and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN204041538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196756A (en) * | 2014-07-07 | 2014-12-10 | 珠海格力电器股份有限公司 | Cross-flow fan blade and air conditioner |
-
2014
- 2014-07-07 CN CN201420373123.5U patent/CN204041538U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196756A (en) * | 2014-07-07 | 2014-12-10 | 珠海格力电器股份有限公司 | Cross-flow fan blade and air conditioner |
| CN104196756B (en) * | 2014-07-07 | 2017-03-01 | 珠海格力电器股份有限公司 | Through-flow fan blade and air-conditioner |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |