CN207268232U - Strong noise elimination degree axial-flow leaf - Google Patents
Strong noise elimination degree axial-flow leaf Download PDFInfo
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- CN207268232U CN207268232U CN201720915086.XU CN201720915086U CN207268232U CN 207268232 U CN207268232 U CN 207268232U CN 201720915086 U CN201720915086 U CN 201720915086U CN 207268232 U CN207268232 U CN 207268232U
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- blade
- trailing edge
- noise elimination
- sound attenuation
- flow leaf
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Abstract
The utility model 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
It the utility model is related 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 axis stream referred to is exactly the axis co-flow with fan blade
Air-flow, if electric fan, outdoor machine of air-conditioner fan are exactly the wind turbine that is run in a manner of axis 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 of wheel hub with the multiple blades for being arranged on wheel hub side, 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.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of axis stream wind that blade noise can be eliminated with higher degree
Leaf.
The technical solution of the utility model is to provide a kind of strong noise elimination degree axial-flow leaf, including wheel hub and setting
In the blade of the wheel hub sidepiece, the middle part of the trailing edge of the blade sets the V words of the central area extension of the oriented blade
Groove, the length in the sideline of the trailing edge is L, and starting point of the V words groove on the trailing edge is located at the trailing edge sideline
At 0.55~0.64L length, terminal of the V words groove on the trailing edge is located at the 0.7~0.78L long in the trailing edge sideline
At degree, the depth of the V words groove is 0.4~0.65L；On the blade of the both sides of the V words groove it is intensive be provided with it is multiple micro-
Type sound attenuation hole, the aperture of the miniature sound attenuation hole is 0.4~0.7mm.
Further, the miniature sound attenuation hole penetrates the blade tilted 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 leeward 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 leeward side of the blade.
Technical solutions of the utility model have the beneficial effect that：By being optimized to the blade construction of axial-flow leaf, specifically
To open V word grooves in the medium position of blade trailing edge, starting point of the selected V word grooves of through a long time demonstration on blade trailing edge and
Depth of groove, it is additional that intensive miniature sound attenuation hole is set, can guide air-flow quickly circulate weaken blade trailing edge air-flow it is disorderly
Disorderly, and then noise level is reduced, noise content is reduced in the case where ensureing the loss less of blade air output.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the utility model
Example is applied, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structure chart of strong noise elimination degree axial-flow leaf of the utility model embodiment；
Fig. 2 is a kind of another structure chart of strong noise elimination degree axial-flow leaf of the utility model embodiment.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Refering to Figure 1, the utility model provides a kind of strong noise elimination degree axial-flow leaf, including wheel hub 1 and
The blade 2 of 1 sidepiece of wheel hub is arranged on, the middle part of the trailing edge 3 of blade 2 sets the V word grooves of the central area extension of oriented blade 2
4, if the length in the sideline of trailing edge 3 is L, 4 starting point on trailing edge 3 of V words groove is located at the 0.55~0.64L long in 3 sideline of trailing edge
At degree, 4 terminal on trailing edge 3 of V words groove is located at 0.7~0.78L length in 3 sideline of trailing edge, and the depth of V words groove 4 is
0.4~0.65L；It is 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
For 0.4~0.7mm.
Specifically, by being optimized to 2 structure of blade of axial-flow leaf, specifically blade 2 trailing edge 3 middle position
V words groove 4 is put out, through a long time demonstration selectes starting point and depth of groove of the V words groove 4 on trailing edge 3, and 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 wherein above-mentioned 3 sideline of trailing edge, refers 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 leeward 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 inlet air 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 6 one end of blade inlet edge to 3 one end of blade trailing edge.
Specifically, the blade 2 of axial-flow leaf can not stop to tremble in high-speed rotation since high-speed flow and vortex etc. influence
Noise is formed, air-flow enters from 4 one end of blade inlet edge axially to be blown out through blade windward side by 3 one end high-speed mobile of blade trailing edge,
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 leeward side of blade 2.It is anti-
Quiver chimb 7 outer ledge towards 2 leeward of blade 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.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
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 tilted set 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 leeward 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 4, it is characterised in that：The outside portion of the anti-chimb that quivers
Deviate extension towards the leeward side of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720915086.XU CN207268232U (en) | 2017-07-26 | 2017-07-26 | Strong noise elimination degree axial-flow leaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720915086.XU CN207268232U (en) | 2017-07-26 | 2017-07-26 | Strong noise elimination degree axial-flow leaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207268232U true CN207268232U (en) | 2018-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720915086.XU Active CN207268232U (en) | 2017-07-26 | 2017-07-26 | Strong noise elimination degree axial-flow leaf |
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| CN (1) | CN207268232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355425A (en) * | 2017-07-26 | 2017-11-17 | 奥克斯空调股份有限公司 | Strong noise elimination degree axial-flow leaf |
-
2017
- 2017-07-26 CN CN201720915086.XU patent/CN207268232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355425A (en) * | 2017-07-26 | 2017-11-17 | 奥克斯空调股份有限公司 | Strong noise elimination degree axial-flow leaf |
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