CN107355425A - Strong noise elimination degree axial-flow leaf - Google Patents
Strong noise elimination degree axial-flow leaf Download PDFInfo
- Publication number
- CN107355425A CN107355425A CN201710618094.2A CN201710618094A CN107355425A CN 107355425 A CN107355425 A CN 107355425A CN 201710618094 A CN201710618094 A CN 201710618094A CN 107355425 A CN107355425 A CN 107355425A
- Authority
- CN
- China
- Prior art keywords
- blade
- trailing edge
- noise elimination
- sound attenuation
- flow leaf
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of strong noise elimination degree axial-flow leaf, including wheel hub and it is arranged on the blade of wheel hub sidepiece, the middle part of the trailing edge of the blade sets the V word grooves of the central area extension of the oriented blade, the length in the sideline of the trailing edge is L, starting point of the V words groove on the trailing edge is located at 0.55~0.64L length in the trailing edge sideline, terminal of the V words groove on the trailing edge is located at 0.7~0.78L length in the trailing edge sideline, and the depth of the V words groove is 0.4~0.65L；Intensive on the blade of the both sides of the V words groove to be provided with multiple miniature sound attenuation holes, the aperture of the miniature sound attenuation hole is 0.4~0.7mm.By opening V word grooves in the medium position of blade trailing edge, selected starting point and depth of groove of the V word grooves on blade trailing edge, it is additional that intensive miniature sound attenuation hole is set, air-flow can be guided quickly to circulate and weaken the air turbulence of blade trailing edge, and then noise level is reduced, reduce noise content in the case where ensureing the loss less of blade air output.
Description
Technical field
The present invention relates to axial-flow leaf technical field, and in particular to a kind of strong noise elimination degree axial-flow leaf.
Background technology
The purposes of axial-flow leaf in daily life is very extensive, and what its axle stream referred to is exactly the axle co-flow with fan blade
Air-flow, if electric fan, outdoor machine of air-conditioner fan are exactly the blower fan that is run in a manner of axle stream.Axial fan with axial-flow leaf is usual
Used in traffic requirement is higher and occasion that pressure requirements are relatively low, be widely used in field of air conditioning.
Common axial-flow leaf is mainly made up of wheel hub with the multiple blades for being arranged on wheel hub the week side of boss, although structure is simple,
But the date parameter requirement of axial-flow leaf detailed structure everywhere is very high, operating and noise control to axial-flow leaf have very big
Influence.In correlation technique, the detailed design of axial-flow leaf is constantly strengthened, but the design of blade low noise properties need
Further improve.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of axial-flow leaf that blade noise can be eliminated with higher degree.
The technical scheme is that, there is provided a kind of strong noise elimination degree axial-flow leaf, including wheel hub and it is arranged on institute
The blade of wheel hub sidepiece is stated, the middle part of the trailing edge of the blade sets the V word grooves of the central area extension of the oriented blade,
The length in the sideline of the trailing edge is L, starting point of the V words groove on the trailing edge be located at the trailing edge sideline 0.55~
At 0.64L length, terminal of the V words groove on the trailing edge is located at 0.7~0.78L length in the trailing edge sideline,
The depth of the V words groove is 0.4~0.65L；It is intensive on the blade of the both sides of the V words groove to be provided with multiple miniature noise eliminations
Hole, the aperture of the miniature sound attenuation hole is 0.4~0.7mm.
Further, the miniature sound attenuation hole penetrates the blade lean and set, and the miniature sound attenuation hole is located at the leaf
Close to the trailing edge of blade, the miniature sound attenuation hole is located at one end of the lee face of the blade close to institute for one end of the windward side of piece
State the leading edge of blade.
Further, continuous auxiliary noise reduction sawtooth is provided with two side channel madial walls of the V words groove.
Further, the outer side edges of the blade are provided with the anti-chimb that quivers, the anti-chimb that quivers close to blade trailing edge
Width increases gradually from blade inlet edge one end to blade trailing edge one end.
Further, extension is deviateed in the outside portion of the anti-chimb that quivers towards the lee face side of the blade.
Technical solution of the present invention has the beneficial effect that：By being optimized to the blade construction of axial-flow leaf, specifically exist
The medium position of blade trailing edge opens V word grooves, and selected starting point and groove of the V word grooves on blade trailing edge is proved through long-time
Depth, it is additional that intensive miniature sound attenuation hole is set, air-flow can be guided quickly to circulate and weaken the air turbulence of blade trailing edge, entered
And noise level is reduced, reduce noise content in the case where ensureing the loss less of blade air output.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structure chart of strong noise elimination degree axial-flow leaf of the embodiment of the present invention；
Fig. 2 is a kind of another structure chart of strong noise elimination degree axial-flow leaf of the embodiment of the present invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Refer to shown in Fig. 1, the invention provides a kind of strong noise elimination degree axial-flow leaf, including wheel hub 1 and setting
In the blade 2 of the sidepiece of wheel hub 1, the middle part of the trailing edge 3 of blade 2 sets the V words groove 4 of the central area extension of oriented blade 2, if
The length in the sideline of trailing edge 3 is L, and 4 starting point on trailing edge 3 of V words groove is located at 0.55~0.64L length in the sideline of trailing edge 3,
4 terminal on trailing edge 3 of V words groove is located at 0.7~0.78L length in the sideline of trailing edge 3, the depth of V words groove 4 for 0.4~
0.65L；Intensive on the blade 2 of the both sides of V words groove 4 to be provided with multiple miniature sound attenuation holes 5, the aperture of miniature sound attenuation hole 5 is 0.4
~0.7mm.
Specifically, by being optimized to the structure of blade 2 of axial-flow leaf, specifically blade 2 trailing edge 3 middle position
V words groove 4 is put out, proves selected starting point and depth of groove of the V words groove 4 on trailing edge 3 through long-time, additional setting is intensive
Miniature sound attenuation hole 5, can guide air-flow quickly circulate weaken blade trailing edge 3 at air turbulence, and then reduce noise level,
Noise content is reduced in the case where ensureing the loss less of blade air output；The length L in the wherein above-mentioned sideline of trailing edge 3, is referred to
Trailing edge 3 does not open complete side line length before V word grooves.
Improved as one of which, miniature sound attenuation hole 5 penetrates blade 2 and is obliquely installed, and miniature sound attenuation hole 5 is located at blade 2
Close to the trailing edge 3 of blade, miniature sound attenuation hole is located at leading edge 6 of the one end close to blade of the lee face of blade for one end of windward side.
Specifically, the windward side of the miniature sound attenuation hole 5 being obliquely installed and blade is in the angle less than 90 degree, and it is windward
Face one end port can absorb partial vortices back to blade air intake one end, the loss for the reduction air quantity that can try one's best, and elimination is made an uproar
Sound.
Improved as another kind, in the present embodiment, continuous auxiliary is provided with two side channel madial walls of V words groove 4 and is disappeared
Sound sawtooth (not shown).
Improved as one of which, the outer side edges of blade 2 are provided with the anti-chimb 7 that quivers, the anti-chimb that quivers at blade trailing edge 3
7 width increases gradually from the one end of blade inlet edge 6 to the one end of blade trailing edge 3.
Specifically, the blade 2 of axial-flow leaf can not stop to tremble in high-speed rotation because high velocity air and vortex etc. influence
Noise is formed, air-flow enters from the one end of blade inlet edge 4 axially to be blown out through blade windward side by one end high-speed mobile of blade trailing edge 3,
The anti-chimb 5 that quivers gradually to broaden has certain inhibitory action to the disorderly air-flow of unordered disturbance, can reduce the shape of partial noise
Into.
As one of which optimization design, extension is deviateed in the outside portion of the anti-chimb 7 that quivers towards the lee face side of blade 2.It is anti-
Quiver chimb 7 outer ledge towards the lee face of blade 2 extend, have drainage to the disorderly air-flow at windward side edge, ensureing
In the case of air output change less, partial noise can be reduced to a certain extent.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of strong noise elimination degree axial-flow leaf, including wheel hub and the blade for being arranged on the wheel hub sidepiece, its feature exist
In：The middle part of the trailing edge of the blade sets the V word grooves of the central area extension of the oriented blade, the sideline of the trailing edge
Length be L, starting point of the V words groove on the trailing edge is located at 0.55~0.64L length in the trailing edge sideline, institute
State terminal of the V words groove on the trailing edge to be located at 0.7~0.78L length in the trailing edge sideline, the depth of the V words groove
Spend for 0.4~0.65L；It is intensive on the blade of the both sides of the V words groove to be provided with multiple miniature sound attenuation holes, the miniature noise elimination
The aperture in hole is 0.4~0.7mm.
2. strong noise elimination degree axial-flow leaf according to claim 1, it is characterised in that：The miniature sound attenuation hole penetrates institute
Blade lean setting is stated, the miniature sound attenuation hole is located at trailing edge of the one end close to blade of the windward side of the blade, described micro-
Type sound attenuation hole is located at leading edge of the one end close to the blade of the lee face of the blade.
3. strong noise elimination degree axial-flow leaf according to claim 1, it is characterised in that：Two side channels of the V words groove
Continuous auxiliary noise reduction sawtooth is provided with madial wall.
4. strong noise elimination degree axial-flow leaf according to claim 1, it is characterised in that：The outer side edges of the blade are close
Blade trailing edge is provided with the anti-chimb that quivers, and the width of the anti-chimb that quivers increases gradually from blade inlet edge one end to blade trailing edge one end
Greatly.
5. strong noise elimination degree axial-flow leaf according to claim 1, it is characterised in that：The outside portion of the anti-chimb that quivers
Deviate extension towards the lee face side of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710618094.2A CN107355425B (en) | 2017-07-26 | 2017-07-26 | High noise cancellation degree axial flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710618094.2A CN107355425B (en) | 2017-07-26 | 2017-07-26 | High noise cancellation degree axial flow fan blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107355425A true CN107355425A (en) | 2017-11-17 |
| CN107355425B CN107355425B (en) | 2023-04-25 |
Family
ID=60285638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710618094.2A Active CN107355425B (en) | 2017-07-26 | 2017-07-26 | High noise cancellation degree axial flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107355425B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005240749A (en) * | 2004-02-27 | 2005-09-08 | Mitsubishi Electric Corp | Blower |
| JP2013249787A (en) * | 2012-06-01 | 2013-12-12 | Daikin Industries Ltd | Propeller fan |
| CN103511339A (en) * | 2012-06-29 | 2014-01-15 | 珠海格力电器股份有限公司 | Air conditioner, axial flow fan and axial propeller of axial flow fan |
| CN204175642U (en) * | 2014-09-30 | 2015-02-25 | 美的集团武汉制冷设备有限公司 | Axial-flow windwheel and the air conditioner with it |
| US20150240645A1 (en) * | 2012-09-28 | 2015-08-27 | Daikin Industries, Ltd. | Propeller fan and air conditioner equipped with same |
| CN207268232U (en) * | 2017-07-26 | 2018-04-24 | 奥克斯空调股份有限公司 | Strong noise elimination degree axial-flow leaf |
-
2017
- 2017-07-26 CN CN201710618094.2A patent/CN107355425B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005240749A (en) * | 2004-02-27 | 2005-09-08 | Mitsubishi Electric Corp | Blower |
| JP2013249787A (en) * | 2012-06-01 | 2013-12-12 | Daikin Industries Ltd | Propeller fan |
| CN103511339A (en) * | 2012-06-29 | 2014-01-15 | 珠海格力电器股份有限公司 | Air conditioner, axial flow fan and axial propeller of axial flow fan |
| US20150240645A1 (en) * | 2012-09-28 | 2015-08-27 | Daikin Industries, Ltd. | Propeller fan and air conditioner equipped with same |
| CN204175642U (en) * | 2014-09-30 | 2015-02-25 | 美的集团武汉制冷设备有限公司 | Axial-flow windwheel and the air conditioner with it |
| CN207268232U (en) * | 2017-07-26 | 2018-04-24 | 奥克斯空调股份有限公司 | Strong noise elimination degree axial-flow leaf |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107355425B (en) | 2023-04-25 |
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