CN201925230U - Fan blade of axial flow fan - Google Patents
Fan blade of axial flow fan Download PDFInfo
- Publication number
- CN201925230U CN201925230U CN2010206838946U CN201020683894U CN201925230U CN 201925230 U CN201925230 U CN 201925230U CN 2010206838946 U CN2010206838946 U CN 2010206838946U CN 201020683894 U CN201020683894 U CN 201020683894U CN 201925230 U CN201925230 U CN 201925230U
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- CN
- China
- Prior art keywords
- blade
- fan
- strip
- shaped projection
- axial
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- 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 - Lifetime
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Abstract
The utility model discloses a fan blade of an axial flow fan, which comprises a blade handle and a blade. The blade consists of an upper lateral surface and a lower lateral surface, the end, which is far away from the blade handle, of the blade is a blade end, and a strip-shaped projection structure is arranged on at least one lateral surface of the blade and positioned at a position close to the blade end of the blade. Preferably, strip-shaped projection structures are disposed on the two lateral surfaces of the blade and positioned at positions close to the blade ends. Each strip-shaped projection structure is wide in the middle and contracted at two ends. In the scheme, the strip-shaped projection structures can block partial air flow in a centrifugal direction, accordingly turbulence between the end of the blade and an air barrel can be reduced, surging between the end of the blade and the air barrel is weakened, work efficiency of the fan is improved, the service life of the fan is prolonged, and noise of the fan is reduced. In addition, the fan blade can be processed only by changing a die of the blade, and has the advantage of convenience in processing without evidently increasing manufacturing cost.
Description
Technical field
The utility model relates to a kind of fan blade, and the fan blade of a kind of axial-flow blower of more specifically saying so belongs to the mechanical ventilation technical field.
Background technique
As everyone knows, impeller is one of parts of axial-flow blower most critical, and the quality of impeller directly has influence on the working efficiency of blower fan, the life-span of blower fan, and the noise of blower fan.The impeller of existing axial-flow blower comprises wheel hub and fan blade, and wherein fan blade is made up of petiole and blade, and the petiole of wheel hub, fan blade mainly plays a part transmission, connection, and the shape of blade is directly connected to every performance index of blower fan.In the axial-flow blower running, the end and the turbulent flow between the air duct of blade are very obvious, the also the easiest surging that causes in this position.For this reason, in the design of some blower fans, anti-rapids ring is set by air duct inboard in the end of blade, with end and the turbulent flow between the air duct that reduces blade, the surging that weakens this position, working efficiency, the life-span of finally improving blower fan, and reduce fan noise.Though the design of above-mentioned axial-flow blower has obtained reasonable effect, its processed complex obviously improves the manufacture cost of blower fan.
The model utility content
At the problems referred to above, the problem that the utility model quasi-solution is determined provides a kind of fan blade of axial-flow blower, it can reduce blade end and the turbulent flow between the air duct, weaken the surging at this position, finally improve working efficiency, the life-span of blower fan, and reduction fan noise, simultaneously easy to process, the manufacture cost of blower fan does not obviously improve.
For achieving the above object, the utility model is by the following technical solutions: a kind of fan blade of axial-flow blower, it comprises petiole and blade, described blade comprises two sides up and down, blade is a blade tip away from an end of petiole, has the strip raised structures at least one side of described blade, near the blade tip position.
All has the strip raised structures on two sides of described blade, near the blade tip position.Wide in the middle of being shaped as of described strip raised structures, two ends shrink.
Adopt such scheme, the fan blade of axial-flow blower of the present utility model is on one of described blade or two sides, have the strip raised structures near the blade tip position.The strip raised structures has the air-flow that can stop the part centrifugal direction, therefore can reduce blade end and the turbulent flow between the air duct, weaken the surging at this position, working efficiency, the life-span of finally improving blower fan, and reduce fan noise.Only need the mould of change fan blade to get final product in processing, have characteristics easy to process, the manufacture cost of blower fan does not obviously improve.
Description of drawings
Fig. 1 is the structural representation of the fan blade of the utility model axial-flow blower;
Fig. 2 is the structural representation that Fig. 1 looks up direction.
Among the figure: 1-blade, 2-petiole, 3-blade tip, 4-strip raised structures.
Embodiment
As shown in Figure 1 and Figure 2, the fan blade of axial-flow blower of the present utility model comprises petiole 2 and blade 1, and described blade 1 comprises two sides up and down, blade 1 is a blade tip away from an end of petiole 2, has strip raised structures 4 on a side of described blade 1, near blade tip 3 positions.Certainly, be preferably on two sides of described blade 1, all have strip raised structures 4 near blade tip 3 positions.Wide in the middle of being shaped as of described strip raised structures 4, two ends shrink.
Claims (3)
1. the fan blade of an axial-flow blower, it comprises petiole (2) and blade (1), described blade (1) comprises two sides up and down, blade (1) is a blade tip away from an end of petiole (2), it is characterized in that at least one side of described blade (1), has strip raised structures (4) near blade tip (3) position.
2. the fan blade of axial-flow blower according to claim 1 is characterized in that on two sides of described blade (1), all has strip raised structures (4) near blade tip (3) position.
3. the fan blade of axial-flow blower according to claim 1 and 2 is characterized in that middle wide, the two ends contraction of being shaped as of described strip raised structures (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206838946U CN201925230U (en) | 2010-12-28 | 2010-12-28 | Fan blade of axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206838946U CN201925230U (en) | 2010-12-28 | 2010-12-28 | Fan blade of axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925230U true CN201925230U (en) | 2011-08-10 |
Family
ID=44429081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206838946U Expired - Lifetime CN201925230U (en) | 2010-12-28 | 2010-12-28 | Fan blade of axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165471A (en) * | 2021-12-15 | 2022-03-11 | 上海交通大学 | Densely distributed light wind-making device and implementation method thereof |
-
2010
- 2010-12-28 CN CN2010206838946U patent/CN201925230U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165471A (en) * | 2021-12-15 | 2022-03-11 | 上海交通大学 | Densely distributed light wind-making device and implementation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |