CN208900387U - Low noise blade and blower with low noise blade - Google Patents
Low noise blade and blower with low noise blade Download PDFInfo
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- CN208900387U CN208900387U CN201821304620.4U CN201821304620U CN208900387U CN 208900387 U CN208900387 U CN 208900387U CN 201821304620 U CN201821304620 U CN 201821304620U CN 208900387 U CN208900387 U CN 208900387U
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- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 206010008190 Cerebrovascular accident Diseases 0.000 abstract 1
- 208000006011 Stroke Diseases 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to blowers, disclose low noise blade and the blower with low noise blade, are equipped with salient point or concave point at the back side trailing edge of blade body.Equally distributed spherical shape salient point or concave point can allow air-flow many small vortex formed here on the utility model apoplexy leaf tail edge, because of the quasi-viscous effect generated when atomic small boundary layer and air-flow flow, to make the flowing of boundary layer airflow become turbulent flow, flow separation when air-flow being inhibited to flow through wind wheel, improve the efficiency of wind wheel itself, the flowing of air-flow is in boundary layer, closer to flowing down, its flowing is more difficult, finally separated with wind wheel surface, separation vortex is formed at dirty place, resistance can increased dramatically, the burble point in boundary layer can be different due to laminar flow is different from turbulent flow, the burble point of turbulent flow is more posteriorly；When wind wheel tail edge part generates small whirlpool, flowing of the air-flow on wind wheel will become turbulent flow from laminar flow, and the separation vortex that burble point generates rearward will become smaller, and resistance can reduce naturally.
Description
Technical field
The utility model relates to blowers, more particularly to low noise blade and the blower with low noise blade.
Background technique
Axial flow blower is to use very wide industrial products on the market.After decades of development, axis stream outer rotor
Plastics, cast aluminium etc. are developed into from cold-rolled steel sheet, wing shapes are formed by injection molding die-casting process, and can easily exist
The small auxiliary for adding noise reduction on wind wheel, increasing intensity, improving efficiency.Because there are boundary layer phenomenons on wind wheel surface, close to wind wheel portion
Point air velocity slow down, in the case that flow velocity is accelerated on the outside of the boundary layer, flowing of the boundary layer inside air because of boundary layer
Quasi-viscous effect, flows decrease even will appear backflow phenomena.
Summary of the invention
The utility model is directed to the problems of the prior art, provides low noise blade and the wind with low noise blade
Machine.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals:
Low noise blade comprising it is fixed on shaft and covers upper blade body, the back side of blade body is equipped with noise reduction mechanism,
Noise reduction mechanism includes reinforcing rib and salient point or concave point, and salient point or concave point are set to the trailing edge of blade body, and reinforcing rib is arc line shaped,
One end end is connected to the side wall of shaft set, and the other end extends in the middle part of blade body.Preferably, reinforcing rib is to counterclockwise
Direction bending.
Preferably, salient point or concave point are that round salient point or concave point, arc line shaped arrange to form multiple groups salient point or concave point group, together
The diameter of one group of salient point or concave point is identical, and is increased from blade body to mid diameter step type.
It is gradually reduced preferably, the height of reinforcing rib covers a side from shaft to blade body side, reinforcing rib top is set
There is inclined-plane, the low outside of chamfered inside is high.
A kind of blower comprising one end of shaft and connector, shaft is connected to motor, and the other end is inserted into connector
In be secured to, it further includes above-mentioned low noise blade, low noise that shaft set, which is sheathed on outside connector and connect with connector,
Sound blade, which is fixed on, to be turned on side wall of shaft sleeve.
Preferably, being additionally provided with more racks on connector, rack is distributed by center annular array of shaft, and rack includes
Sequentially connected four sections, second segment is vertical with shaft, and the 4th section parallel with shaft, and one end of first segment is connect with connector, separately
The upward deviation in one end is simultaneously connect with second segment, and one end of third section is connect with second segment, the downward deviation of the other end and the 4th Duan Lian
It connects, the steel ring of multiple annulars is provided on rack, each steel ring and rack form a mesh enclosure and leaf blade covered on inside.
Preferably, the spacing of adjacent two steel rings is identical.
The utility model has significant technical effect: fan blade in the utility model due to using above technical scheme
Equally distributed spherical shape salient point or concave point can allow air-flow many small vortex formed here on trailing edge, because of atomic small boundary layer and
The quasi-viscous effect that air-flow generates when flowing, so that the flowing of boundary layer airflow be made to become turbulent flow, it is suppressed that when air-flow flows through wind wheel
Flow separation, improve the efficiency of wind wheel itself.The flowing of air-flow is in boundary layer, and closer to flowing down, its flowing is more tired
Difficulty is finally separated with wind wheel surface, forms separation vortex at dirty place, resistance can increased dramatically.The burble point in boundary layer can be because
Laminar flow is different and different from turbulent flow, and the burble point of turbulent flow is more posteriorly.When wind wheel tail edge part generates small whirlpool, air-flow is in wind wheel
On flowing will become turbulent flow from laminar flow, the separation vortex that burble point generates rearward will become smaller, and resistance naturally can
Reduce；In addition the reinforcing rib of curved line plays the role of reinforcement, and improves to reach by the shape to reinforcing rib
Certain water conservancy diversion is carried out while playing reinforcement structure intensity, to reduce the intensity of the noise of its generation accordingly.
Detailed description of the invention
Fig. 1 and Fig. 4 is the structural schematic diagram of embodiment 1 (there are two types of the salient points or concave point of different arrangement modes for tool)；
Fig. 2 is the structural schematic diagram of embodiment 2；
Fig. 3 is the structure schematic diagram of embodiment 2.
The toponym that each number designation is referred in attached drawing is as follows: 1-shaft set, 2-blade bodies, 21-are reinforced
Muscle, 22-salient points or concave point, 3-racks, 4-steel rings, 5-connectors, 6-shafts.
Specific embodiment
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
Embodiment 1
Low noise blade comprising the back side of the blade body 2 being fixed on shaft set 1, blade body 2 is equipped with noise abatement machine
Structure, noise reduction mechanism include reinforcing rib 21 and salient point or concave point 22, and salient point or concave point 22 are set to the trailing edge of blade body 2, are reinforced
Muscle 21 is arc line shaped, and one end end is connected to the side wall of shaft set 1, and the other end extends to 2 middle part of blade body.
Reinforcing rib 21 is bent counterclockwise.The direction is using the blade direction of rotation of fan as standard.
Salient point or concave point 22 are round salient point or concave point 22, and arc line shaped arranges to form multiple groups salient point or 22 groups of concave point, same
The diameter of group salient point or concave point 22 is identical, and is increased from blade body 2 to mid diameter step type.
The height of reinforcing rib 21 covers 1 one sides from shaft and is gradually reduced to 2 side of blade body, and 21 top of reinforcing rib is equipped with oblique
Face, the low outside of chamfered inside are high.
Action principle: equally distributed spherical shape salient point or concave point can allow air-flow many small whirlpools formed here on fan blade trailing edge
Stream, because of the quasi-viscous effect generated when atomic small boundary layer and air-flow flowing, so that the flowing of boundary layer airflow is made to become turbulent flow,
Flow separation when air-flow being inhibited to flow through wind wheel improves the efficiency of wind wheel itself.The flowing of air-flow is more leaned in boundary layer
Its flowing that closely flows down is more difficult, finally separates with wind wheel surface, forms separation vortex at dirty place, resistance can increased dramatically.
The burble point in boundary layer can be different due to laminar flow is different from turbulent flow, and the burble point of turbulent flow is more posteriorly.When wind wheel tail edge part generates
When small whirlpool, flowing of the air-flow on wind wheel will become turbulent flow from laminar flow, and the separation vortex that burble point generates rearward will
Become smaller, resistance can reduce naturally.
Embodiment 2
A kind of blower comprising shaft 6 and connector 5, one end of shaft 6 are connected to motor, and the other end is inserted into company
It is secured in fitting 5, it further includes described in embodiment 1 that shaft set 1, which is sheathed on 5 outside of connector and connect with connector 5,
Low noise blade, low noise blade be fixed on shaft cover 1 side wall on.
More racks 3 are additionally provided on connector 5, rack 3 is the distribution of center annular array with shaft 6, and rack 3 includes successively
Four sections of connection, second segment is vertical with shaft 6, and the 4th section parallel with shaft 6, and one end of first segment is connect with connector 5, another
It holds upward deviation and is connect with second segment, one end of third section is connect with second segment, and the downward deviation of the other end is connect with the 4th section,
The steel ring 4 of multiple annulars is provided on rack 3, each steel ring 4 forms a mesh enclosure with rack 3 and leaf blade is covered on inside.Net
Frame 3 is multisection type, and intensity is relative to the bigger of arc.The spacing of adjacent two steel rings 4 is identical.
Wherein connector 5 is cylindrical attachment base, is located between shaft 6 and shaft set 1 and connects the two.
In short, the above is only the preferred embodiment of the present invention, it is all according to present utility model application the scope of the patents institute
The equivalent changes and modifications of work should all belong to the covering scope of the utility model patent.
Claims (7)
1. low noise blade comprising the blade body (2) being fixed on shaft set (1), it is characterised in that: blade body (2)
The back side be equipped with noise reduction mechanism, noise reduction mechanism includes reinforcing rib (21) and salient point or concave point (22), and salient point or concave point (22) are arranged
Trailing edge in blade body (2), reinforcing rib (21) are arc line shaped, and one end end is connected to the side wall of shaft set (1), the other end
It extends in the middle part of blade body (2).
2. low noise blade according to claim 1, it is characterised in that: reinforcing rib (21) is bent counterclockwise.
3. low noise blade according to claim 1, it is characterised in that: salient point or concave point (22) are round salient point or concave point
(22), arc line shaped arranges to form multiple groups salient point or concave point (22) group, and the diameter of same group of salient point or concave point (22) is identical, and by leaf
Piece ontology (2) increases to mid diameter step type.
4. low noise blade according to claim 1, it is characterised in that: the height of reinforcing rib (21) is from shaft set (1) one
Lateral blade body (2) side is gradually reduced, and reinforcing rib (21) top is equipped with inclined-plane, and the low outside of chamfered inside is high.
5. a kind of blower, it is characterised in that: it includes shaft (6) and connector (5), and one end of shaft (6) is connected to motor,
The other end is inserted into connector (5) and is secured to, and shaft set (1) is sheathed on connector (5) outside and connects with connector (5)
It connects, further includes the described in any item low noise blades of claim 1-4, low noise blade is fixed on shaft set (1) side wall.
6. a kind of blower according to claim 5, it is characterised in that: be additionally provided with more racks (3), net on connector (5)
Frame (3) is the distribution of center annular array with shaft (6), and rack (3) includes sequentially connected four sections, and second segment and shaft (6) are hung down
Directly, the 4th section it is parallel with shaft (6), one end of first segment is connect with connector (5), the upward deviation of the other end simultaneously with second segment connect
It connects, one end of third section is connect with second segment, and the downward deviation of the other end is connect with the 4th section, and rack is provided with multiple rings on (3)
The steel ring (4) of shape, each steel ring (4) and rack (3) form a mesh enclosure and leaf blade are covered on inside.
7. a kind of blower according to claim 6, it is characterised in that: the spacing of adjacent two steel rings (4) is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821304620.4U CN208900387U (en) | 2018-08-14 | 2018-08-14 | Low noise blade and blower with low noise blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821304620.4U CN208900387U (en) | 2018-08-14 | 2018-08-14 | Low noise blade and blower with low noise blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208900387U true CN208900387U (en) | 2019-05-24 |
Family
ID=66569308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821304620.4U Active CN208900387U (en) | 2018-08-14 | 2018-08-14 | Low noise blade and blower with low noise blade |
Country Status (1)
| Country | Link |
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| CN (1) | CN208900387U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879343A (en) * | 2019-11-29 | 2021-06-01 | 中国航发商用航空发动机有限责任公司 | Aircraft engine blade and aircraft engine |
| CN112894232A (en) * | 2021-01-15 | 2021-06-04 | 浙江马尔风机有限公司 | Wire mesh enclosure and processing tool thereof |
| CN114876828A (en) * | 2021-02-05 | 2022-08-09 | 全亿大科技（佛山）有限公司 | Fan with cooling device |
| WO2024060878A1 (en) * | 2022-09-22 | 2024-03-28 | 中兴通讯股份有限公司 | Fan, and communication device |
| CN119900934A (en) * | 2023-10-27 | 2025-04-29 | 中国石油天然气股份有限公司 | A natural gas transmission station hydrogen blending system and hydrogen blending method |
| CN119934577A (en) * | 2023-10-26 | 2025-05-06 | 宁波奥克斯电气有限公司 | A ceiling fan blade, a wind wheel assembly and an air conditioner |
-
2018
- 2018-08-14 CN CN201821304620.4U patent/CN208900387U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879343A (en) * | 2019-11-29 | 2021-06-01 | 中国航发商用航空发动机有限责任公司 | Aircraft engine blade and aircraft engine |
| CN112894232A (en) * | 2021-01-15 | 2021-06-04 | 浙江马尔风机有限公司 | Wire mesh enclosure and processing tool thereof |
| CN112894232B (en) * | 2021-01-15 | 2022-01-18 | 浙江马尔风机有限公司 | Wire mesh enclosure and processing tool thereof |
| CN114876828A (en) * | 2021-02-05 | 2022-08-09 | 全亿大科技（佛山）有限公司 | Fan with cooling device |
| CN114876828B (en) * | 2021-02-05 | 2024-09-03 | 全亿大科技（佛山）有限公司 | Fan with fan body |
| WO2024060878A1 (en) * | 2022-09-22 | 2024-03-28 | 中兴通讯股份有限公司 | Fan, and communication device |
| CN119934577A (en) * | 2023-10-26 | 2025-05-06 | 宁波奥克斯电气有限公司 | A ceiling fan blade, a wind wheel assembly and an air conditioner |
| CN119900934A (en) * | 2023-10-27 | 2025-04-29 | 中国石油天然气股份有限公司 | A natural gas transmission station hydrogen blending system and hydrogen blending method |
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