CN202228424U - Axial-flow fan blades - Google Patents
Axial-flow fan blades Download PDFInfo
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- CN202228424U CN202228424U CN2011203829259U CN201120382925U CN202228424U CN 202228424 U CN202228424 U CN 202228424U CN 2011203829259 U CN2011203829259 U CN 2011203829259U CN 201120382925 U CN201120382925 U CN 201120382925U CN 202228424 U CN202228424 U CN 202228424U
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- blade
- blades
- axial
- primary blades
- auxiliary
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Abstract
The utility model provides axial-flow fan blades which comprises a hub, master blades and auxiliary blades, wherein the master blades are arranged on the hub; the auxiliary blades are arranged on the hub; the master blades and the auxiliary blades are arranged at intervals; and one or more than one of the outer diameter, the shape, the size and the installation angle of each auxiliary blade is the same as that or those of each master blade. For the axial-flow fan blades, the additional arrangement of the auxiliary blades improves the uniformity of incoming flow at the air inlet region, and the rotating speed of the fan blades is reduced under the premise of guaranteeing the air quantity and the consistence of the uniform fan blades, therefore, the purpose of reducing the power consumption of the fan blades or reducing the noise generated by the fan blades is achieved.
Description
Technical field
The utility model relates to the air conditioner field, particularly a kind of axial-flow leaf that is applicable to air conditioner.
Background technique
Existing idle call axial-flow leaf adopts the blade of two or more identical sizes to be equally spaced in fan blade wheel hub periphery, and each blade adopts identical geometric shape and design and installation angle.Main area of idle call axial-flow leaf blade and acting zone are near fan blade outer rim place.
When adopting two Blade Design, the efficient of fan blade is higher, but in order to reach the fan blade identical air quantity more with lobe numbers, needs to promote the rotating speed of two blade fan blades, thereby has caused the noise of fan blade to raise, and the noise both poor sound quality; When adopting three or three above Blade Design, solidity of blades increases, and certainly will increase the power consumption of fan blade, and exists mutual disturbance between the blade and cause noise to raise and the efficient reduction.Because the main area of fan blade is regional near the fan blade outer rim, so cause the velocity distribution of airflow passes heat exchanger also to demonstrate nonuniformity with acting.Owing to have above-mentioned technical problem, industry needs the better axial-flow leaf of a kind of performance.
The model utility content
The utility model is optimized existing technology, provide a kind of have improve performance axial-flow leaf.
The utility model is realized through following technological scheme: a kind of axial-flow leaf comprises: wheel hub; Primary blades is arranged on the wheel hub; Auxiliary blade is spaced apart and arranged on the wheel hub with primary blades, in the external diameter of auxiliary blade, shape, area, the established angle one or multinomial and primary blades is inequality.
Further, the external diameter of auxiliary blade is less than the external diameter of primary blades.
Further, the external diameter of auxiliary blade is 30% to 90% of a primary blades external diameter.
Further, the external diameter of auxiliary blade is 80% of a primary blades external diameter.
Further, auxiliary blade has deviation at the established angle on the wheel hub with respect to the established angle of primary blades on wheel hub, and the number range of deviation is-10 ° to+10 °.
Further, the area of auxiliary blade is less than the area of primary blades.
Further, the area of auxiliary blade is 10% to 90% of a primary blades area.
Further, the area of auxiliary blade is 57% of a primary blades area.
Further, primary blades is identical with the number of auxiliary blade, and auxiliary blade is arranged in the interval between each adjacent primary blades.
Further, auxiliary blade is arranged in the interval between the adjacent primary blades of part.
Through technique scheme, the major advantage of the utility model is, thereby increases the incoming flow uniformity that auxiliary blade has improved the air intake zone; Guaranteeing to reduce the fan blade rotating speed under the consistent prerequisite of fan blade of air quantity and even blade, thereby reaching the noise that reduces fan blade power consumption or the generation of reduction fan 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 axial-flow leaf schematic representation of the prior art;
Fig. 2 shows first embodiment's of the utility model axial-flow leaf schematic representation;
Fig. 3 shows second embodiment's of the utility model axial-flow leaf schematic representation;
Fig. 4 shows the pressure-plotting of a kind of axial-flow leaf of the prior art;
Fig. 5 shows an embodiment's of the utility model the pressure-plotting of axial-flow leaf;
Fig. 6 is to use the heat exchanger of air conditioner surface wind speed distribution map of axial-flow leaf in the existing technology; And
Fig. 7 is to use the heat exchanger of air conditioner surface wind speed distribution map of the utility model 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.
First embodiment's of the utility model the schematic representation of axial-flow leaf has been shown among Fig. 2.Axial blade comprises wheel hub 1 and is arranged on the primary blades 2 on the wheel hub.The utility model increases two or more auxiliary blades 3 on the basis of the idle call axial-flow leaf of existing design, auxiliary blade 3 adopts alternate layout with primary blades 2.Compare primary blades 2, auxiliary blade 3 mainly can come from the design of following three aspects to embody respectively:
Below specify the embodiment of the utility model:
First embodiment:
As shown in Figure 2, auxiliary blade 3 adopts Blade Design and the profile identical with primary blades 2, and it is big or small to have changed external diameter, and auxiliary blade 3 external profile diameters can adopt 30%～90% of primary blades 2 external profile diameters.Auxiliary blade 3 external profile diameter r and primary blades 2 external profile diameter R have been shown among the figure, r/R=0.8 in the diagram, promptly auxiliary blade 3 external profile diameters have adopted 80% of primary blades 2 external profile diameters.
Wind speed profile figure, Fig. 7 that the heat exchanger of air conditioner surface of using axial-flow leaf of the prior art has been shown among Fig. 6 show the wind speed profile figure on the air-condition heat exchanger surface of the axial-flow leaf that uses the utility model; The equal representation space coordinate of X axle among the figure and Y axle; Lines among the figure are line of equal velocity, and are digital then show the sizes values of line of equal velocity; Can obtain the heat exchanger surface wind speed profile under the different fan blade runnings through computer simulation or experiment test; Can know through contrast; Because the auxiliary blade of taking 3; Use the heat exchanger surface wind speed profile uniformity of these model utility auxiliary blade 3 axial-flow leaf outdoor units to make moderate progress, and wind speed increase.
The pressure-plotting of a kind of axial-flow leaf of the prior art has been shown among Fig. 4, and Fig. 5 shows an embodiment's of the utility model the pressure-plotting of axial-flow leaf.Can learn through Fig. 4 and Fig. 5 contrast; First embodiment's primary blades 2 acting abilities with use two blade axial-flow fan blades suitable at present; And the extra acting that increases 3 pairs of air of auxiliary blade; Therefore the air quantity of the axial-flow leaf of the utility model increases under with the condition of constant power, wind speed also improves, thereby can improve heat exchange efficiency.
Second embodiment:
As shown in Figure 3; Auxiliary blade 3 adopts Blade Design identical with primary blades 2 and identical external diameter; But take blade installation angle inequality and blade area inequality, the adjustment range of setting angle is-10 °～+ 10 °, and blade area can be 10%～90% of primary blades 2.Provided the center of circle angle of auxiliary blade 3 among Fig. 5 with primary blades 2, L1=40 in the diagram, L2=70, then the area of the area/primary blades 2 of auxiliary blade 3 is than ≈ 0.57; Can adjust greatly through the center of circle angle or the cascade solidity of control blade during design, the ratio of the area of auxiliary blade 3.
On the basis of the foregoing description, auxiliary blade 3 adopts with primary blades 2 Blade Design profile or auxiliary blades 3 inequality and increases other partial structurtes changes.
Quantitatively, auxiliary blade 3 can be arranged among each neutral of primary blades 2, and is identical with primary blades 2 quantity.For example, four auxiliary blades 3 are set respectively in the neutral of four primary blades 2.Auxiliary blade 3 also can be arranged in the selected neutral, and is different with primary blades 2 quantity.For example, in four neutrals of four primary blades 2, select two two auxiliary blades 3 are set respectively.The quantity of auxiliary blade 3 also can be more than primary blades 2.
According to the axial-flow leaf of the utility model, have following beneficial effect:
Help improving the incoming flow uniformity in air intake zone; Or guarantee to reduce the fan blade rotating speed under the consistent prerequisite of fan blade of air quantity and even blade, thereby reach the noise that reduces fan blade power consumption or the generation of reduction fan 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);
Primary blades (2) is arranged on the said wheel hub (1);
It is characterized in that, also comprise:
Auxiliary blade (3) is spaced apart and arranged on the said wheel hub (1) with said primary blades (2), and in the external diameter of said auxiliary blade (3), shape, area, the established angle one or multinomial and said primary blades (2) are inequality.
2. axial-flow leaf according to claim 1 is characterized in that, the external diameter of said auxiliary blade (3) is less than the external diameter of said primary blades (2).
3. axial-flow leaf according to claim 2 is characterized in that, the external diameter of said auxiliary blade (3) is 30% to 90% of said primary blades (a 2) external diameter.
4. axial-flow leaf according to claim 3 is characterized in that, the external diameter of said auxiliary blade (3) is 80% of said primary blades (a 2) external diameter.
5. axial-flow leaf according to claim 1; It is characterized in that; Said auxiliary blade (3) has deviation at the established angle on the said wheel hub (1) with respect to the established angle of said primary blades (2) on said wheel hub (1), and the number range of deviation is-10 ° to+10 °.
6. axial-flow leaf according to claim 1 is characterized in that, the area of said auxiliary blade (3) is less than the area of said primary blades (2).
7. axial-flow leaf according to claim 6 is characterized in that, the area of said auxiliary blade (3) is 10% to 90% of said primary blades (a 2) area.
8. axial-flow leaf according to claim 7 is characterized in that, the area of said auxiliary blade (3) is 57% of said primary blades (a 2) area.
9. axial-flow leaf according to claim 1 is characterized in that, said primary blades (2) is identical with the number of said auxiliary blade (3), and said auxiliary blade (3) is arranged in the interval between the adjacent said primary blades (2).
10. axial-flow leaf according to claim 1 is characterized in that, said auxiliary blade (3) is arranged in the interval between the adjacent said primary blades of part (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203829259U CN202228424U (en) | 2011-10-09 | 2011-10-09 | Axial-flow fan blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203829259U CN202228424U (en) | 2011-10-09 | 2011-10-09 | Axial-flow fan blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228424U true CN202228424U (en) | 2012-05-23 |
Family
ID=46079011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203829259U Expired - Lifetime CN202228424U (en) | 2011-10-09 | 2011-10-09 | Axial-flow fan blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032377A (en) * | 2011-10-09 | 2013-04-10 | 珠海格力电器股份有限公司 | Axial flow fan blade |
-
2011
- 2011-10-09 CN CN2011203829259U patent/CN202228424U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032377A (en) * | 2011-10-09 | 2013-04-10 | 珠海格力电器股份有限公司 | Axial flow fan blade |
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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: 20120523 |