CN103899575A - Axial flow propeller and air conditioner with same - Google Patents
Axial flow propeller and air conditioner with same Download PDFInfo
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- CN103899575A CN103899575A CN201210576015.3A CN201210576015A CN103899575A CN 103899575 A CN103899575 A CN 103899575A CN 201210576015 A CN201210576015 A CN 201210576015A CN 103899575 A CN103899575 A CN 103899575A
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- corrugated surface
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Abstract
The invention provides an axial flow propeller. The axial flow propeller comprises a wheel hub and blades connected with the wheel hub, wherein the windward side of each blade is a wave surface with waves arranged in the chord length direction of the blade, the cut line of each wave surface in the chord length direction of the corresponding blade is a wave line, and a plurality of wave segments are evenly distributed on each wave line. Because the windward side of each blade of the axial flow propeller is the corresponding wave surface, each wave line obtained when the corresponding wave surface is cut in the chord length direction of the corresponding blade is a variable curved line, the air stream flowing effect of the blades can be improved in the changing range of the wave lines, vibration of air stream to the blades is reduced, and therefore the air feeding noise of the axial flow propeller is reduced, the resistance of air stream to the blades is reduced, and the power consumption of an axial flow fan is reduced. The invention further provides an air conditioner with the axial flow propeller.
Description
Technical field
The present invention relates to air conditioner technical field, particularly a kind of axial-flow leaf and there is its air conditioner.
Background technique
Along with day by day increasing of air conditioner outdoor machine heat dissipating capacity, the performance requirement of the axial-flow blower that outdoor unit is used also increases thereupon, and the blade structure of axial-flow leaf plays vital effect to its radiating effect.
Please refer to Fig. 1, the structural representation that Fig. 1 is a kind of axial-flow leaf of the prior art.
At present, its axial-flow leaf comprise wheel hub 01 and equidistantly or unequal-interval be arranged on the two or more blade 02 on wheel hub 01.And the blade 02 of axial-flow leaf mostly is the blade with smooth surface.In the time that axial-flow leaf is worked, because the air-flow on blade 02 exists turbulent boundary layer and entrainments effect, cause axial-flow leaf to produce abnormal aerodynamic noise in the time of operation, the most obvious at the trailing edge place of blade 02.The phenomenon that this turbulent boundary layer and the effect of entrainmenting cause can produce larger whirlpool, thereby produces larger noise; And, due to the effect of air current flow, blade rotation is produced to certain resistance, increase the power consumption that blade 02 rotates, thereby make axial-flow blower need higher rotative power to meet the demand of air output and heat radiation.
Therefore, when how reducing noise, reduce power consumption, become those skilled in the art's important technological problems to be solved.
Summary of the invention
In view of this, the invention provides a kind of axial-flow leaf, to reduce noise and to reduce power consumption.The present invention also provides a kind of air conditioner with above-mentioned axial-flow leaf.
For achieving the above object, the invention provides following technological scheme:
A kind of axial-flow leaf, comprise wheel hub and the blade being connected with described wheel hub, the windward side of described blade is the corrugated surface that ripple is arranged along the chord length direction of described blade, described corrugated surface is wave molding along the cutting line in the chord length direction of described blade, is evenly distributed with multiple bellows segment on described wave molding.
Preferably, any point on described wave molding is positioned at equation
Preferably, the lee face of described blade is corrugated surface.
Preferably, the lower dent of described windward side is relative with the lower dent of described lee face.
Preferably, described corrugated surface extends to its leaf by the blade root of described blade and pushes up.
Preferably, the wave molding of described corrugated surface extends to its blade trailing edge by the blade inlet edge of described blade.
Preferably, the wave molding of described corrugated surface is extended to apart from the distance of its blade trailing edge 0.1C ~ 0.2C by the distance of the blade inlet edge 0.1C ~ 0.2C apart from described blade;
Wherein, C is chord length.
Preferably, described corrugated surface is by the blade root 0.05D apart from described blade
1~ 0.15D
1distance extend to its leaf top;
Or described corrugated surface is extended to apart from its leaf top 0.05D by the blade root of described blade
2~ 0.2D
2distance;
Or described corrugated surface is by the blade root 0.05D apart from described blade
1~ 0.15D
1distance extend to apart from its leaf top 0.05D
2~ 0.2D
2distance;
Wherein, D
1for the diameter of described wheel hub, D
2for the external diameter of described axial-flow leaf.
Preferably, the wave molding of described corrugated surface extends to its blade trailing edge by the blade inlet edge of described blade.
Preferably, the wave molding of described corrugated surface is extended to apart from the distance of its blade trailing edge 0.1C ~ 0.2C by the distance of the blade inlet edge 0.1C ~ 0.2C apart from described blade;
Wherein, C is chord length.
Preferably, described bellows segment is broken line or arc.
The present invention also provides a kind of air conditioner, comprises axial-flow leaf, and described axial-flow leaf is the axial-flow leaf described in above-mentioned any one.
Can find out from above-mentioned technological scheme, axial-flow leaf provided by the invention, comprises wheel hub and the blade being connected with wheel hub, and the windward side of blade is the corrugated surface that ripple is arranged along the chord length direction of blade.And corrugated surface is wave molding along the cutting line in the chord length direction of blade, is evenly distributed with multiple bellows segment on wave molding.Because windward side provided by the invention is corrugated surface, the wave molding that its corrugated surface dissects gained along the chord length direction of blade is variable curve, and can meet the effect that improves the air current flow on blade in its excursion, reduce air-flow blade is produced to vibration, thereby reduce the air-supply noise of axial-flow leaf, alleviate the resistance of air-flow to blade, reduce the power consumption of axial-flow blower.
The present invention also provides a kind of air conditioner with above-mentioned axial-flow leaf, and because above-mentioned axial-flow leaf has above-mentioned technique effect, the air conditioner with this axial-flow leaf also should have corresponding technique effect, introduces no longer one by one at this.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of structural representation of axial-flow leaf of the prior art;
The structural representation of the axial-flow leaf that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the sectional view along the first embodiment of A-A section in Fig. 2;
Fig. 4 is the partial enlarged drawing of B part in Fig. 3;
Fig. 5 is the sectional view along the second embodiment of A-A section in Fig. 2;
The structural representation of the first blade of the axial-flow leaf that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the second blade of the axial-flow leaf that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the third blade of the axial-flow leaf that Fig. 8 provides for the embodiment of the present invention;
The structural representation of the 4th kind of blade of the axial-flow leaf that Fig. 9 provides for the embodiment of the present invention;
The structural representation of the 5th kind of blade of the axial-flow leaf that Figure 10 provides for the embodiment of the present invention;
The structural representation of the second wave molding of the axial-flow leaf that Figure 11 provides for the embodiment of the present invention;
The structural representation of the third wave molding of the axial-flow leaf that Figure 12 provides for the embodiment of the present invention;
The structural representation of the 4th kind of wave molding of the axial-flow leaf that Figure 13 provides for the embodiment of the present invention;
The structural representation of the 5th kind of wave molding of the axial-flow leaf that Figure 14 provides for the embodiment of the present invention.
Embodiment
The invention discloses a kind of axial-flow leaf, to reduce noise and to reduce power consumption.The present invention also provides a kind of air conditioner with above-mentioned axial-flow leaf.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 2-Fig. 4, the structural representation of the first axial-flow leaf that Fig. 2 provides for the embodiment of the present invention; Fig. 3 is the sectional view along A-A section in Fig. 2; Fig. 4 is the partial enlarged drawing of B part in Fig. 3.
The embodiment of the present invention provides a kind of axial-flow leaf, comprise wheel hub 2 and the blade 1 being connected with wheel hub 2, it is characterized in that, the windward side of blade 1 is the corrugated surface that ripple is arranged along the chord length direction of blade 1, corrugated surface is wave molding along the cutting line in the chord length direction of blade 1, is evenly distributed with multiple bellows segment on wave molding.
The axial-flow leaf that the embodiment of the present invention provides, comprises wheel hub 2 and the blade 1 being connected with wheel hub 2, and the windward side of blade 1 is the corrugated surface that ripple is arranged along the chord length direction of blade 1.And, corrugated surface is wave molding along the cutting line in the chord length direction of blade 1, on wave molding, be evenly distributed with multiple bellows segment, because windward side provided by the invention is corrugated surface, the wave molding that its corrugated surface dissects gained along the chord length direction of blade 1 is variable curve, and can meet the effect that improves the air current flow on blade in its excursion, reduce air-flow blade is produced to vibration, thereby reduce the air-supply noise of axial-flow leaf, alleviate the resistance of air-flow to blade, reduce the power consumption of axial-flow blower.
Preferably, the structure of above-mentioned every section of bellows segment is identical.Ripple on wave molding is uniformly distributed, adjacent two peak-to-peak distances of ripple equate, the distance of adjacent two troughs equates, the height of each crest equates, the height of each trough equate and structure identical, after air-flow is contacted with the corrugated surface of blade 1, corrugated surface is even on the impact of air-flow along chord length direction.Also can make the structure difference of every section of bellows segment, and within the protection domain of the axial-flow leaf all providing in the embodiment of the present invention.
Further, any point of wave molding is positioned at equation
0<A≤d/2 or 0<A≤C/8,
ω=2 π/λ, 0.05C≤λ≤C, on the equation curve that 0≤b≤d forms; Wherein, d is axial-flow leaf thickness, and C is chord length.Above-mentioned bellows segment is the ripple struction of one-period in above-mentioned equation curve.Wherein, the starting point of wave molding and terminating point are any point on the equation curve that forms of above-mentioned equation.
It should be noted that, because the C of chord length everywhere along blade bearing of trend on blade 1 may be different, on blade 1, on diverse location, dissect the wave molding difference of rear gained along chord length direction.Process and make that air-flow is can be on blade 1 smooth to flow for the ease of blade 1, the smooth connection of the crest on corrugated surface and trough.As shown in Figure 2, the crest on corrugated surface and trough are divergent shape along blade 1.
In the preferred version of this embodiment, the circumferential cross-section R=200mm of axial-flow leaf, vane thickness d=3.5mm, chord length C=262.5mm, function cycle λ=52mm, when amplitude is respectively A=1.5mm, any point of wave molding is positioned at equation
on the equation curve forming.
So arrange, blade provided in the present embodiment, with respect to blade of the prior art, the in the situation that of Same Efficieney, its air quantity that can form can further improve, and the noise of formation can further be reduced, and please refer to following table content.
Table 1 contrasts with the test data of experiment of prior art axial-flow leaf
Known by above-mentioned laboratory data, blade provided in the present embodiment, compared with blade of the prior art: the in the situation that of equal air quantity, power demand can further reduce, and the noise of formation also can further be reduced; The in the situation that of equal noise, air quantity and rotating speed that it can form can further improve, and power demand can further reduce.
Certainly, equation parameter provided in the present embodiment also can be other value, such as, R=150mm, 300mm etc., d=3mm, 4mm etc., C=260mm, 270mm etc., λ=50mm, 55mm etc., A=1mm, 2mm etc.So, blade provided in the present embodiment, the stream pressure of formation is larger, and can effectively reduce noise.
As shown in Figure 3 and Figure 4, the windward side of blade 1 is corrugated surface, and lee face is light face.Now, any point that windward side is dissectd along the chord length direction of blade 1 on the wave molding of gained is positioned at equation
0<A≤d/2,
ω=2 π/λ 0.05C≤λ≤C, on the equation curve that 0≤b≤d forms.Wherein, also can make 0<A≤C/8, and all within the present embodiment protection domain.
Fig. 5 is the sectional view along the second embodiment of A-A section in Fig. 2.Windward side and the lee face of blade 1 are corrugated surface, and the lower dent of windward side is relative with the lower dent of lee face.As shown in Figure 5, windward side and the lee face of blade are corrugated surface, and ripple on windward side and lee face cooperatively interacts, and the lower dent of windward side is relative with the lower dent of lee face; The upper convex portion of windward side is relative with the upper convex portion of lee face, has avoided the uneven thickness of blade 1 and has reduced its intensity, makes the integral thickness of blade 1 basic identical.Now, any point that the windward side of blade 1 and lee face dissect along the chord length direction of blade 1 on the wave molding of gained is all positioned at equation
0<A≤C/8,
ω=2 π/λ, 0.05C≤λ≤C, on the equation curve that 0≤b≤d forms.Wherein, also can make 0<A≤d/2, and all within the present embodiment protection domain.
The structural representation of the first axial-flow leaf Leaf that as shown in Figure 6, Fig. 6 provides for the embodiment of the present invention.Corrugated surface is extended to its leaf top 12 and corrugated surface wave molding by the blade root 11 of blade 1 by the blade inlet edge 13 of blade 1 to its blade trailing edge 14.The wave molding that is corrugated surface covers whole blade along the bearing of trend of blade 1, and the blade root 11 of blade 1 to leaf top 12 all has ripple; And, corrugated surface covers the surface of blade 1 along the chord length direction of blade 1, air-flow is started by blade inlet edge 13 until blade trailing edge 14 is affected by corrugated surface all, further reduce air-flow to the vibrative degree of blade 1, thereby reduce the air-supply noise of axial-flow leaf, alleviate the resistance of air-flow to blade 1, reduced the power consumption of axial-flow blower.Above-described embodiment is optimal case.
Should be appreciated that one end that blade root 11 is connected with wheel hub 2 for blade 1, leaf top 12 is the edge away from wheel hub 1, and wherein, root of blade is connected with wheel hub, and blade outer rim is blade free end.Blade inlet edge 13 is the windward side edge of blade 1, the edge of blade trailing edge 14 for being oppositely arranged with blade inlet edge 13 on blade 1.
Also can corrugated surface not extended to its leaf top 12 by the blade root 11 of blade 1.
As shown in Figure 7, corrugated surface is by the blade root 11 position 0.05D apart from blade 1
1~ 0.15D
1distance extend to the leaf top 12 of blade 1, the wave molding of corrugated surface by the blade inlet edge 13 of blade 1 to its blade trailing edge 14.Wherein, D
1for the diameter of described wheel hub, D
2for the external diameter of described axial-flow leaf.
As shown in Figure 8, corrugated surface is extended to apart from the leaf of blade 1 and is pushed up 12 position 0.05D by the blade root 11 of blade 1
2~ 0.2D
2distance, the wave molding of corrugated surface by the blade inlet edge 13 of blade 1 to its blade trailing edge 14.
As shown in Figure 9, corrugated surface is by the blade root 11 position 0.05D apart from blade 1
1~ 0.15D
1distance extend to apart from the leaf of blade 1 and push up 12 position 0.05D
2~ 0.2D
2distance, the wave molding of corrugated surface by the blade inlet edge 13 of blade 1 to its blade trailing edge 14.The starting point that is corrugated surface all has certain distance apart from blade inlet edge 13 and the blade trailing edge 14 of blade 1.
Can be not yet by the wave molding of corrugated surface by the blade inlet edge 13 of blade 1 to its blade trailing edge 14.For example: the wave molding of corrugated surface is extended to its blade trailing edge 14 by the distance of the blade inlet edge 13 position 0.1C ~ 0.2C apart from blade 1; Or the wave molding of corrugated surface is extended to apart from the distance of its blade trailing edge 14 position 0.1C ~ 0.2C by the blade inlet edge 13 of described blade 1; Or the wave molding of corrugated surface is extended to the distance of its blade trailing edge 14 position 0.1C ~ 0.2C by the distance of the blade inlet edge 13 position 0.1C ~ 0.2C apart from blade 1; Wherein, C is chord length.
As shown in figure 10, corrugated surface by the blade root 11 position 0.05D apart from blade 1
1~ 0.15D
1distance extend to apart from the leaf of blade 1 and push up 12 position 0.05D
2~ 0.2D
2distance, the wave molding of corrugated surface is extended to apart from the distance of its blade trailing edge 14 position 0.1C ~ 0.2C by the distance of the blade inlet edge 13 position 0.1C ~ 0.2C apart from blade 1.In the centre of blade 1, corrugated surface is set.Wherein, be the distance apart from blade inlet edge 13 position 0.8C ~ 0.9C apart from the distance of blade trailing edge 14 position 0.1C ~ 0.2C.
Can also be broken line or arc by bellows segment.
As shown in figure 11, bellows segment is broken line, and its crest and trough are knuckle; As shown in figure 12, bellows segment is broken line, and its crest and trough are fillet; As shown in figure 13, bellows segment is broken line, and its crest is straight line, and its trough is knuckle; As shown in figure 14, bellows segment is arc, the summit that its crest is arc, and trough is the angle after two arcs connect.Above-described embodiment all can reach above-mentioned effect, and all within protection domain.
In the axial-flow leaf providing in the embodiment of the present invention, blade 1 is at least 2.Preferably blade 1 is evenly arranged on wheel hub 2.Also can change the angle between each blade 1 according to actual requirement, make its inhomogeneous being arranged on wheel hub 2, and all within protection domain, this tired stating no longer one by one.
The embodiment of the present invention also provides a kind of air conditioner, comprises axial-flow leaf, the axial-flow blower that axial-flow leaf is above-described embodiment.Because above-mentioned air conditioner has above-mentioned axial-flow leaf, the air conditioner with above-mentioned axial-flow leaf also should have corresponding technique effect, introduces no longer one by one at this.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and other embodiments' difference, between each embodiment identical similar part mutually referring to.To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to these embodiments' multiple amendment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. an axial-flow leaf, comprise wheel hub and the blade being connected with described wheel hub, it is characterized in that, the windward side of described blade is the corrugated surface that ripple is arranged along the chord length direction of described blade, described corrugated surface is wave molding along the cutting line in the chord length direction of described blade, is evenly distributed with multiple bellows segment on described wave molding.
2. axial-flow leaf as claimed in claim 1, is characterized in that, any point on described wave molding is positioned at equation
0<A≤d/2 or 0<A≤C/8,
ω=2 π/λ, 0.05C≤λ≤C, on the equation curve that 0≤b≤d forms; Wherein, d is axial-flow leaf thickness, and C is chord length.
3. axial-flow leaf as claimed in claim 2, is characterized in that, the lee face of described blade is corrugated surface.
4. axial-flow leaf as claimed in claim 3, is characterized in that, the lower dent of described windward side is relative with the lower dent of described lee face.
5. the axial-flow leaf as described in claim 1-4 any one, is characterized in that, described corrugated surface extends to its leaf by the blade root of described blade and pushes up.
6. axial-flow leaf as claimed in claim 5, is characterized in that, the wave molding of described corrugated surface extends to its blade trailing edge by the blade inlet edge of described blade.
7. axial-flow leaf as claimed in claim 5, is characterized in that, the wave molding of described corrugated surface extends to its blade trailing edge by the distance of the blade inlet edge 0.1C ~ 0.2C apart from described blade;
Or the wave molding of described corrugated surface is extended to apart from the distance of its blade trailing edge 0.1C ~ 0.2C by the blade inlet edge of described blade;
Or the wave molding of described corrugated surface is extended to the distance of its blade trailing edge 0.1C ~ 0.2C by the distance of the blade inlet edge 0.1C ~ 0.2C apart from described blade;
Wherein, C is chord length.
8. the axial-flow leaf as described in claim 1-4 any one, is characterized in that, described corrugated surface is by the blade root 0.05D apart from described blade
1~ 0.15D
1distance extend to its leaf top;
Or described corrugated surface is extended to apart from its leaf top 0.05D by the blade root of described blade
2~ 0.2D
2distance;
Or described corrugated surface is by the blade root 0.05D apart from described blade
1~ 0.15D
1distance extend to apart from its leaf top 0.05D
2~ 0.2D
2distance;
Wherein, D
1for the diameter of described wheel hub, D
2for the external diameter of described axial-flow leaf.
9. axial-flow leaf as claimed in claim 8, is characterized in that, the wave molding of described corrugated surface extends to its blade trailing edge by the blade inlet edge of described blade.
10. axial-flow leaf as claimed in claim 8, is characterized in that, the wave molding of described corrugated surface extends to its blade trailing edge by the distance of the blade inlet edge 0.1C ~ 0.2C apart from described blade;
Or the wave molding of described corrugated surface is extended to apart from the distance of its blade trailing edge 0.1C ~ 0.2C by the blade inlet edge of described blade;
Or the wave molding of described corrugated surface is extended to the distance of its blade trailing edge 0.1C ~ 0.2C by the distance of the blade inlet edge 0.1C ~ 0.2C apart from described blade;
Wherein, C is chord length.
11. axial-flow leafs as claimed in claim 1, is characterized in that, described bellows segment is broken line or arc.
12. 1 kinds of air conditioners, comprise axial-flow leaf, it is characterized in that, described axial-flow leaf is the axial-flow leaf as described in claim 1-11 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576015.3A CN103899575A (en) | 2012-12-26 | 2012-12-26 | Axial flow propeller and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576015.3A CN103899575A (en) | 2012-12-26 | 2012-12-26 | Axial flow propeller and air conditioner with same |
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| Publication Number | Publication Date |
|---|---|
| CN103899575A true CN103899575A (en) | 2014-07-02 |
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ID=50991094
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210576015.3A Pending CN103899575A (en) | 2012-12-26 | 2012-12-26 | Axial flow propeller and air conditioner with same |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200457A (en) * | 2005-01-21 | 2006-08-03 | Matsushita Electric Ind Co Ltd | Blower |
| CN101688540A (en) * | 2007-07-11 | 2010-03-31 | 大金工业株式会社 | Propeller fan |
| CN102032215A (en) * | 2010-12-30 | 2011-04-27 | 北京理工大学 | Method for designing blade type with waveform surface |
| CN202991628U (en) * | 2012-12-26 | 2013-06-12 | 珠海格力电器股份有限公司 | Axial-flow fan and air conditioner with same |
-
2012
- 2012-12-26 CN CN201210576015.3A patent/CN103899575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200457A (en) * | 2005-01-21 | 2006-08-03 | Matsushita Electric Ind Co Ltd | Blower |
| CN101688540A (en) * | 2007-07-11 | 2010-03-31 | 大金工业株式会社 | Propeller fan |
| CN102032215A (en) * | 2010-12-30 | 2011-04-27 | 北京理工大学 | Method for designing blade type with waveform surface |
| CN202991628U (en) * | 2012-12-26 | 2013-06-12 | 珠海格力电器股份有限公司 | Axial-flow fan and air conditioner with same |
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