CN201258874Y - Fan blade in axial fan - Google Patents
Fan blade in axial fan Download PDFInfo
- Publication number
- CN201258874Y CN201258874Y CNU200820042039XU CN200820042039U CN201258874Y CN 201258874 Y CN201258874 Y CN 201258874Y CN U200820042039X U CNU200820042039X U CN U200820042039XU CN 200820042039 U CN200820042039 U CN 200820042039U CN 201258874 Y CN201258874 Y CN 201258874Y
- Authority
- CN
- China
- Prior art keywords
- blade
- fan
- fan blade
- axial
- wing
- 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
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a fan blade of an axial flow fan capable of improving fan efficiency and reducing noises. The fan blade comprises a blade and a blade stern which is arranged at the root of the blade. At least one surface of the outer edge on the top of blade is provided with a nose wing. The blade tip of the blade bends forward along the rotation direction. The axial flow fan with the fan blade has high efficiency and low noises, and is indeed an axial flow fan with low noises and high efficiency.
Description
Technical field
The utility model relates to axial-flow blower, refers more particularly to the fan blade in the axial-flow blower.
Background technique
As everyone knows, be used for ventilation and heat, single-stage not with the axial-flow blower of air duct structure for we are usually said, the characteristic of impeller has determined the overall performance of blower fan substantially.In whole impeller, fan blade is again the key factor of decision impeller characteristic.Comprise two to three fan blades in the present domestic axial flow fan vane wheel, every fan blade comprises: a slice blade and the petiole that is arranged on this sheet root of blade, blade adopt the aluminium sheet compacting, and blade surface is suppressed several stiffening ribs.Because be subject to processing the restriction of process conditions, existing blade installation angle radially changes not quite, and not have consideration to be positioned at the structure of vane tip, the efficient, noise objective that causes blower fan is ideal not to the utmost.
The model utility content
A technical problem to be solved in the utility model is: provide a kind of and improve fan efficiency and reduce fan blade in the axial-flow blower of noise.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the fan blade in the axial-flow blower, comprise: blade and the petiole that is arranged on root of blade, the one side at least of described vane tip outer rim is provided with roof limb, and the blade tip of blade is antecurvature along sense of rotation.
The wing of described blade to the thickness in cross section be positioned at the wing to 30～40% places of the corresponding molded lines in cross section against the fan blade rotation direction.
At least simultaneously be provided with at least one winglet in the positive and negative of described blade.
The obverse and reverse of described blade is respectively arranged with at least one winglet.
The beneficial effects of the utility model are: because fan blade described in the utility model is provided with roof limb in the vane tip outer rim, and blade tip is arranged to along sense of rotation antecurvature (sweepforward) formula structure, so just reduced the turbulent flow that fan blade produces in rotary course, improve the efficient of blower fan, reduced the noise of blower fan.In addition, being arranged on the winglet of blade surface and the highest point in wing cross section is that wing arch place is arranged on and 30～40% places of the corresponding molded lines in wing cross section against the fan blade rotation direction, these have all further changed the stream condition of blower fan, thereby further improved the efficient of blower fan, reduced the noise of blower fan.
Description of drawings
Fig. 1 is that the utility model is applied in the perspective view in the impeller;
Fig. 2 is a perspective view of the present utility model;
Among the figure: 1, blade, 2, roof limb, 3, petiole, 4, wheel hub plate, 5, winglet, 6, wing cross section, 7, the thickness, 8, molded lines, 9, blade tip.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As shown in Figure 2, the fan blade in the axial-flow blower described in the utility model comprises: blade 1 and the petiole 3 that is arranged on blade 1 root, and the two-sided roof limb 2 that is provided with disjunctor of described blade 1 top outer rim, the blade tip 9 of blade 1 is along sense of rotation antecurvature (sweepforward).In the present embodiment, the wing of described blade 1 to the thickness 7 in cross section 6 be positioned at the wing to 30～40% places of cross section 6 corresponding molded lines 8 against the fan blade rotation direction; Front or reverse side at described blade 1 are provided with a winglet 5; Can certainly be respectively arranged with a winglet 5 at the obverse and reverse of described blade 1.During practical application, as shown in Figure 1, the petiole 3 of seven above-mentioned fan blades by its root can be clamped in a pair of involutory wheel hub plate 4, form impeller.
Because fan blade described in the utility model is provided with roof limb 2 in the top of blade 1 outer rim, and blade tip 9 is arranged to along sense of rotation antecurvature (sweepforward) formula structure, so just reduce the turbulent flow that fan blade produces in rotary course, improved the efficient of blower fan, reduced the noise of blower fan.In addition, being arranged on the winglet 5 on blade 1 surface and the highest point in wing cross section 6 is that wing arch place is arranged on and 30～40% places of wing cross section 6 corresponding molded lines 8 against the fan blade rotation direction, these have all further changed the stream condition of blower fan, thereby further improved the efficient of blower fan, reduced the noise of blower fan.
Claims (4)
1. the fan blade in the axial-flow blower comprises: blade and be arranged on the petiole of root of blade, it is characterized in that: the one side at least of described vane tip outer rim is provided with roof limb, and the blade tip of blade is antecurvature along sense of rotation.
2. fan blade as claimed in claim 1 is characterized in that: the wing of described blade to the thickness in cross section be positioned at the wing to 30～40% places of the corresponding molded lines in cross section against the fan blade rotation direction.
3. fan blade as claimed in claim 1 or 2 is characterized in that: at least simultaneously be provided with at least one winglet in the positive and negative of described blade.
4. fan blade as claimed in claim 3 is characterized in that: the obverse and reverse of described blade is respectively arranged with at least one winglet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820042039XU CN201258874Y (en) | 2008-07-23 | 2008-07-23 | Fan blade in axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820042039XU CN201258874Y (en) | 2008-07-23 | 2008-07-23 | Fan blade in axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258874Y true CN201258874Y (en) | 2009-06-17 |
Family
ID=40773109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820042039XU Expired - Fee Related CN201258874Y (en) | 2008-07-23 | 2008-07-23 | Fan blade in axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258874Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818747A (en) * | 2010-03-24 | 2010-09-01 | 常熟市鼓风机有限公司 | Matching structure of impeller and blade of textile fan |
| CN102913481A (en) * | 2012-01-16 | 2013-02-06 | 高靖中 | Axial flow fan impeller blade comprising double auxiliary wings |
-
2008
- 2008-07-23 CN CNU200820042039XU patent/CN201258874Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818747A (en) * | 2010-03-24 | 2010-09-01 | 常熟市鼓风机有限公司 | Matching structure of impeller and blade of textile fan |
| CN102913481A (en) * | 2012-01-16 | 2013-02-06 | 高靖中 | Axial flow fan impeller blade comprising double auxiliary wings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756593U (en) | High-efficient centrifugal wind wheel | |
| CN201636038U (en) | Fan with high efficiency, energy saving and cost lowering | |
| CN202391808U (en) | Low-noise axial flow air wheel | |
| CN101634312A (en) | Fan blades of axial flow fan | |
| WO2009111956A1 (en) | An axial flow fan for decreasing the noise and the energy consumption | |
| CN201547015U (en) | Low-noise centrifugal wind wheel | |
| CN201258874Y (en) | Fan blade in axial fan | |
| WO2009038127A1 (en) | Windmill | |
| CN206816552U (en) | Axial-flow windwheel and air conditioner | |
| CN202194839U (en) | Small double-air-outlet centrifugal fan | |
| CN108953222B (en) | Centrifugal impeller | |
| CN204267332U (en) | A kind of efficient quiet axial fan | |
| CN200985903Y (en) | Tube-axial fan | |
| CN207420962U (en) | A kind of aerofoil fan and air-conditioner outdoor unit for air-conditioner outdoor unit | |
| CN202789716U (en) | Centrifugal wind wheel | |
| CN102312848B (en) | Efficient multi-air outlet energy-saving anti-explosion fan | |
| CN202679887U (en) | Wind-pressure enhanced radiating module | |
| CN101368575A (en) | Fan impeller | |
| CN204267382U (en) | A kind of low noise axial fan | |
| CN1201090C (en) | Blower and air conditioner with the same | |
| CN102927046B (en) | Low-noise efficient impeller of axial-flow fan | |
| CN203463308U (en) | Special blower fan for automatic car washer | |
| CN201125883Y (en) | Axial flow fan, blower fan using the same as well as outdoor unit of air conditioner | |
| CN201412393Y (en) | Blade, fan impeller and air conditioner | |
| CN202883477U (en) | Low-noise efficient axial flow fan impeller |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20160723 |