CN202251089U - Axial flow fan blade - Google Patents
Axial flow fan blade Download PDFInfo
- Publication number
- CN202251089U CN202251089U CN2011203829865U CN201120382986U CN202251089U CN 202251089 U CN202251089 U CN 202251089U CN 2011203829865 U CN2011203829865 U CN 2011203829865U CN 201120382986 U CN201120382986 U CN 201120382986U CN 202251089 U CN202251089 U CN 202251089U
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- Prior art keywords
- blade
- axial
- flow leaf
- utility
- ladder
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Abstract
The utility model provides an axial flow fan blade, which includes a hub and the blades, wherein the blades are installed on the hub; and a step-shaped stepped surface is arranged on the surface of each blade. The axial flow fan blade provided by the utility model enlarges the acting area, improves the air flowing on suction force surfaces, improves the wind volume, reduces the noise or power consumption at the same time, and improves the intensity.
Description
Technical field
The utility model relates to the air-conditioning fan blade field, particularly a kind of axial-flow leaf.
Background technique
Existing axial-flow leaf blade surface is level and smooth curved surface, and local discrete concave point, the short and small structure characteristics such as convex tendon of existing of respective surface, its main purpose strengthen leaf blade acting ability near the air current flow travel direction property the blade surface is dredged; Perhaps reduce flow-boundary-layer thickness, the separation of avoiding air current flow occurring causes main flow zone constricted flow; Or the intensity of reinforced blade structure, avoid in the operation process blade that bigger trembling takes place and cause noise or abnormal sound.But fan blade of the prior art does not exist the curvature of curved surface in big zone to change, and the improvement of indivedual parts is only arranged, and beneficial effect is not obvious.
A kind of axial-flow leaf of the prior art has been shown among Fig. 1, has comprised fan blade wheel hub 11 and leaf blade 12.On leaf blade 12, do not exist the curvature of curved surface in big zone to change.
The model utility content
The utility model is optimized existing technology, and a kind of axial-flow leaf is provided, and realize to increase fan blade acting area, improves gas flowing on suction surface, reducing noise or power consumption when promoting air quantity, and the effect of the intensity that strengthens leaf blade is arranged.
The utility model is realized through following technological scheme: a kind of axial-flow leaf comprises: wheel hub; Blade is installed on the wheel hub; Have the surface on the blade and be stair-stepping ladder surface.
Further, ladder surface the length that makes progress in week account for whole blade along the proportion of circumferential lengths for greater than 0 to less than 80%.
Further, the scope of ladder surface minimum diameter diametrically is for equaling hub diameter to accounting for the whole blade diameter less than 90%.
Further, ladder surface only is arranged on the suction surface of blade.
Further, ladder surface is greater than 0 to 0.015 times less than said blade diameter with respect to the height of projection of blade surface.
Further, ladder surface is arranged on the suction surface and/or pressure side of blade.
Further, ladder surface is greater than 0 to 0.05 times less than said blade diameter with respect to the height of projection of blade surface.
Further, ladder surface is arranged at vane top.
Further, the quantity of ladder surface is one or more.
Further, the ladder of ladder surface trend is radial direction or circumferential direction along blade.
Through technique scheme, the major advantage of the utility model is, increased stepped construction, increases fan blade acting area, improves flowing of suction surface, reducing noise or power consumption when promoting air quantity, and strengthen the intensity of leaf blade.
Description of drawings
The accompanying drawing that constitutes the part of the utility model is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows the schematic representation of an axial-flow leaf of the prior art;
Fig. 2 shows first embodiment's of the utility model the side view of axial-flow leaf;
Fig. 3 shows first embodiment's of the utility model the front view of axial-flow leaf;
Fig. 4 shows first embodiment's of the utility model among the figure the profile position partial view of axial-flow leaf;
Fig. 5 shows second embodiment's of the utility model the front view of axial-flow leaf;
Fig. 6 shows the 3rd embodiment's of the utility model the side view of axial-flow leaf;
Fig. 7 shows the 3rd embodiment's of the utility model the front view of axial-flow leaf; And
Fig. 8 shows first embodiment's of the utility model among the figure the profile position partial view of axial-flow leaf.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
The side view of first embodiment's axial-flow leaf of the utility model has been shown among Fig. 2.The axial-flow leaf of the utility model comprises: wheel hub 1 be installed in the blade 2 on the said wheel hub 1.On the basis of existing idle call axial-flow leaf, the axial-flow leaf of the utility model has increased ladder surface 3 on 2 of single suction surface or whole blade.
The fan blade suction surface increases stepped construction, and its purpose reduces flow-boundary-layer thickness for strengthening the disturbance to the air-flow of flowing through, and avoids the separation of air current flow.The stepped construction zone can be distributed in whole suction surface, also can be at local suction surface; Ladder trend can be along radial direction, also can be along circumferential direction, and also random direction, above-mentioned direction can be dredged and carries out angle and design from controlling air current flow, travel direction property.
Fan blade leaf top increases stepped construction, and its purpose is revealed air-flow for control leaf top, effectively utilizes 2 pairs of air actings of blade, promotes the efficient of fan blade.
The fan blade pressure side increases stepped construction, and its purpose has increased fan blade acting chord length for increasing the acting area of blade 2, being equal to, and fan blade work running will produce bigger air quantity.
In addition; Leaf blade 2 employing stepped construction rear blades 2 surfaces are changed irregular gauffer curved surface into by the curved surface of single curvature; Strengthened the intensity of blade 2; Reduced fall or operation process in damaged possibility appears, avoid in the operation process blade 2 that bigger trembling takes place and cause noise or abnormal sound.
The number of ladder can be one or more, and the ladder number is similar to the feather on the birds wing at most.
Preferably, referring to accompanying drawing 2-8, the utility model can preferred embodiment be implemented by following:
Referring to Fig. 2-8, the implication of mark is following among the figure: D is the maximum external profile diameter of fan blade; D is the minimum diameter of ladder surface 3; H is the height of the former relatively blade 2 structures skew of first embodiment's staircase areas; L1 be ladder surface 3 leading edges with the fan blade leading edge between distance corresponding central angle in front view, L2 is girth corresponding central angle in front view of ladder surface 3, L3 be ladder surface 3 trailing edges with the fan blade trailing edge between distance corresponding central angle in front view.L is the displacement of the former relatively blade 2 structures skew of ladder surface 3.
First embodiment:
Like Fig. 2-shown in Figure 4, staircase areas exists on single suction surface, and demonstrating suction surface is the water corrugated.Staircase areas upwards can from 0 to 80% in 2 weeks of blade, promptly L2/ (L1+L2+L3) get (0,80%] scope; Upwards minimum diameter can be from wheel hub 1 diameter to 90% of outer most edge diameter in blade 2 footpaths for staircase areas, and promptly d/D gets [wheel hub 1 ratio, 0.9] scope.The original relatively blade 2 surperficial relative displacement h/D of ladder surface 3 get (0～0.015] scope.Embodiment's L2/ shown in Fig. 2～4 (L1+L2+L3) value is 23%.
Second embodiment:
As shown in Figure 5, upwards minimum diameter can be from wheel hub 1 diameter to 90% of outer most edge diameter in blade 2 footpaths for staircase areas, and promptly d/D gets [wheel hub 1 ratio, 0.9] scope.The d/D value is 0.25 in this case study on implementation, is fan blade wheel hub 1 than size, and at warp upwards, ladder surface 3 is close to wheel hub 1.
The 3rd embodiment:
Shown in Fig. 6～8, staircase areas can inhaled, all exist on the pressure side, and blade 2 integral body demonstrate stepped, original relatively blade 2 relative displacement L/D get (0,0.05] scope.The L/D value of Fig. 6～8 illustrated embodiments is 0.0467.
The axial-flow leaf of the utility model is installed on certain air-conditioning, according to GB/T 7725-2004 National Standard room air conditioner " middle regulation air quantity, noise testing requirement and method, obtain relevant test data, see the following form:
This shows that the axial-flow leaf of the utility model has increased air quantity, has practiced thrift power, reduced rotating speed and noise.
According to the axial-flow leaf of the utility model, have following beneficial effect:
Increase fan blade acting area improves flowing of suction surface, flows in the guide blades top, reducing noise or power consumption when promoting air quantity, and the intensity of enhancing leaf blade.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. axial-flow leaf comprises:
Wheel hub (1);
Blade (2) is installed on the said wheel hub (1);
It is characterized in that having the surface on the said blade (2) and be stair-stepping ladder surface (3).
2. axial-flow leaf according to claim 1 is characterized in that, said ladder surface (3) the length that makes progress in week account for whole said blade (2) along the proportion of circumferential lengths for greater than 0 to less than 80%.
3. axial-flow leaf according to claim 1 is characterized in that, the scope of said ladder surface (3) minimum diameter diametrically is for equaling said wheel hub (1) diameter to accounting for whole said blade (2) diameter less than 90%.
4. axial-flow leaf according to claim 1 is characterized in that, said ladder surface (3) only is arranged on the suction surface of said blade (2).
5. axial-flow leaf according to claim 4 is characterized in that, said ladder surface (3) height of projection surperficial with respect to said blade (2) is greater than 0 to 0.015 times less than said blade (2) diameter.
6. axial-flow leaf according to claim 1 is characterized in that, said ladder surface (3) is arranged on the suction surface and/or pressure side of said blade (2).
7. axial-flow leaf according to claim 6 is characterized in that, said ladder surface (3) height of projection surperficial with respect to said blade (2) is greater than 0 to 0.05 times less than said blade (2) diameter.
8. axial-flow leaf according to claim 1 is characterized in that, said ladder surface (3) is arranged at the leaf top of said blade (2).
9. axial-flow leaf according to claim 1 is characterized in that, the quantity of said ladder surface (3) is one or more.
10. axial-flow leaf according to claim 1 is characterized in that, the ladder trend of said ladder surface (3) is radial direction or circumferential direction along said blade (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203829865U CN202251089U (en) | 2011-10-09 | 2011-10-09 | Axial flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203829865U CN202251089U (en) | 2011-10-09 | 2011-10-09 | Axial flow fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251089U true CN202251089U (en) | 2012-05-30 |
Family
ID=46112339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203829865U Expired - Lifetime CN202251089U (en) | 2011-10-09 | 2011-10-09 | Axial flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032376A (en) * | 2011-10-09 | 2013-04-10 | 珠海格力电器股份有限公司 | Axial flow fan blade |
| CN104665863A (en) * | 2015-03-06 | 2015-06-03 | 于钦密 | Intelligent CT (computerized tomography) scanner |
-
2011
- 2011-10-09 CN CN2011203829865U patent/CN202251089U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032376A (en) * | 2011-10-09 | 2013-04-10 | 珠海格力电器股份有限公司 | Axial flow fan blade |
| CN103032376B (en) * | 2011-10-09 | 2015-12-09 | 珠海格力电器股份有限公司 | Axial-flow leaf |
| CN104665863A (en) * | 2015-03-06 | 2015-06-03 | 于钦密 | Intelligent CT (computerized tomography) scanner |
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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: 20120530 |