CN203453123U - Noise reduction fan blade - Google Patents
Noise reduction fan blade Download PDFInfo
- Publication number
- CN203453123U CN203453123U CN201320556198.2U CN201320556198U CN203453123U CN 203453123 U CN203453123 U CN 203453123U CN 201320556198 U CN201320556198 U CN 201320556198U CN 203453123 U CN203453123 U CN 203453123U
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- blade
- fin
- noise
- electric fan
- wheel hub
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- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 241000883990 Flabellum Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a noise reduction fan blade which comprises a hub and a plurality of blade bodies which are formed in the periphery of the hub. The blade bodies are distributed on the periphery of the hub in a radial shape, and a convex rib and a plurality of concave point grooves which are placed in the side of the convex rib are formed in the surface of each blade body. According to the noise reduction fan blade, the concave point grooves and the convex rib are arranged on the leeside of each blade body, the two ends of the first convex rib and the second convex rib in the convex ribs both extend to the two sides of the blade bodies, the edge parts of the two sides of the blade bodies are made to form non-smooth structures, and the leeside of each blade body form a convex non-smooth surface and a concave non-smooth surface through the concave point grooves. When a fan works, airflow is formed after the blade bodies rotate, the convex non-smooth surfaces and the concave non-smooth surfaces which are used as the leeside of the blade bodies and the edge parts of the two sides of the blade bodies form the non-smooth structure so that resistance reduction and noise reduction can be effectively conducted, the working efficiency, the working quality and the market competitiveness of the noise reduction fan blade are improved.
Description
Technical field:
The utility model relates to electric fan product technical field, refers in particular to a kind of have good drag reduction, noise reduction, and can effectively improve the noise-reducing type electric fan of fan work quality and efficiency.
Background technique:
In recent years along with the development of electronic industry, the development of electronic product is gradually towards high-performance, high frequency, high-speed and lightening direction evolution.Along with the performance of electronic product constantly promotes, arithmetic speed is more and more faster, the arithmetic speed of its inside chip group constantly promotes, and number of chips constantly increases, and the heat distributing during chip operation also correspondingly increases, if disperse not in time these heats, will greatly affect the performance of electronic product, the arithmetic speed of electronic product be reduced, along with the continuous accumulation of heat, also may burn electronic product, therefore must dispel the heat to electronic product.
Radiation fan is being played the part of very important role in present stage electronic product radiating, wherein, blast and air quantity that electric fan produces fan have larger impact, and the amount ground size that whether can produce noise or produce noise fan has larger impact equally.
The electric fan of traditional heat-dissipating fan generally comprises: a wheel hub and several take shape in the blade of wheel hub periphery, and this blade radially distributes peripheral in wheel hub, wherein, and the smooth outer surface of blade, and curved.
The electric fan of said structure, when rotating, can produce air-flow, and the outer surface that blade is smooth cannot effectively be restrained air-flow and forward, produce resistance, cause air-flow to lose in the smooth outer surface slippage of blade, and form buzzing at the afterbody of blade, therefore can produce larger noise.In addition, so also can make the air-flow differential of blade front and back little, cannot grow distance and transmit, have a strong impact on workmanship and the working efficiency of fan, can not meet modern consumer and pursue the effect of " quiet ", therefore, the market competitiveness of conventional fan flabellum is lower simultaneously.
In view of this, the inventor proposes following technical proposals.
Model utility content:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of have good drag reduction, noise reduction are provided, and can effectively improve the noise-reducing type electric fan of fan work quality and efficiency.
In order to solve the problems of the technologies described above, the utility model has adopted following technical proposals: this noise-reducing type electric fan comprises: a wheel hub and several take shape in the blade of wheel hub periphery, wherein, this blade radially distributes peripheral in wheel hub, in the surface forming of blade every described, has fin and a plurality of concave point groove that is positioned at fin side.
Furthermore, in technique scheme, described blade has a lee face and face upward a wind face relative with lee face, and described fin and concave point groove all take shape on lee face.
Furthermore, in technique scheme, described fin comprises: take shape in the first fin of lee face end in described blade and be also the second fin of column distribution with the first fin, wherein, between the first fin and the second fin, form a sinking space, described concave point groove is arranged in this sinking space.
Furthermore, in technique scheme, the two ends of described the first fin and the second fin all extend to the both sides of described blade.
Furthermore, in technique scheme, the second described fin comprises: two the first arc-shaped concave and the second arc-shaped concaves of fixing with the lee face one of described blade, this first arc-shaped concave and the second arc-shaped concave intersection are blade-like.
Furthermore, in technique scheme, the second fin described in each on blade is uniformly distributed along the annulus forming centered by wheel hub.
Furthermore, in technique scheme, the first fin described in each on blade is uniformly distributed along the annulus forming centered by wheel hub.
Adopt after technique scheme, the utility model has following beneficial effect compared with prior art: concave point groove and fin that the utility model is provided with in the lee face of every blade, and the first fin in fin and the two ends of the second fin all extend to the both sides of blade, make the edge section of blade both sides form non-smooth structure, and the lee face of blade form protruding, recessed non-smooth surface by concave point groove.When fan work, after blade rotation, produce air-flow, blade can carry out drag reduction and noise reduction effectively as protruding, the recessed non-smooth surface of lee face and the edge section of blade both sides formation non-smooth structure, in its Leaf, the concave point groove of lee face and fin can change the direction of part air-flow, can reduce the vibration of blade tip like this, can reduce the resistance of air-flow, also can effectively reduce noise, improve working efficiency of the present utility model, workmanship and the market competitiveness.
Accompanying drawing explanation:
Fig. 1 is stereogram of the present utility model;
Fig. 2 is the local enlarged diagram of A part in Fig. 1;
Fig. 3 is the stereogram at another visual angle of the utility model;
Fig. 4 is plan view of the present utility model;
Description of reference numerals:
1 wheel hub 2 blades
20 sinking space 201 lee faces
202 windward side 21 fins
211 first fin 212 second fins
22 concave point grooves
Embodiment:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
Shown in Fig. 1-4, a kind of noise-reducing type electric fan, it comprises: a wheel hub 1 and several take shape in the blade 2 of wheel hub 1 periphery, wherein, this blade 2 radially distributes in wheel hub 1 periphery, in the surface forming of blade every described 2, has fin 21 and a plurality of concave point groove 22 that is positioned at fin 21 sides, and this concave point groove 22 and fin 21 can be to flabellum when the work, reduce the resistance of air-flow to blade 2, can also reduce the noise that blade 2 produces simultaneously.
Described blade 2 has a lee face 201 and a windward side 202 relative with lee face 201, and described fin 21 and concave point groove 22 all take shape on lee face 201, makes the lee face 201 of blade form protruding, recessed non-smooth surface by concave point groove.
Described fin 21 comprises: take shape in the first fin 211 of lee face 201 ends in described blade 2 and be also the second fin 212 of column distribution with the first fin 211, wherein, between the first fin 211 and the second fin 212, form a sinking space 20, described concave point groove 22 is arranged in this sinking space 20.Specifically as shown in Figure 4, the second fin 212 described in each on blade 2 is uniformly distributed along the annulus forming centered by wheel hub 1, and described in each, the first fin 211 on blade 2 is uniformly distributed along the annulus forming centered by wheel hub 1.
The two ends of described the first fin 211 and the second fin 212 all extend to the both sides of described blade 2, make the edge section of blade both sides form non-smooth structure.
The second described fin 212 comprises: two the first arc-shaped concave and the second arc-shaped concaves of fixing with lee face 201 one of described blade 2, this first arc-shaped concave and the second arc-shaped concave intersection are blade-like.
Concave point groove and fin that the utility model is provided with in the lee face of every blade, and the first fin in fin and the two ends of the second fin all extend to the both sides of blade, make the edge section of blade both sides form non-smooth structure, and the lee face of blade form protruding, recessed non-smooth surface by concave point groove.When fan work, after blade rotation, produce air-flow, blade can carry out drag reduction and noise reduction effectively as protruding, the recessed non-smooth surface of lee face and the edge section of blade both sides formation non-smooth structure, in its Leaf, the concave point groove of lee face and fin can change the direction of part air-flow, can reduce the vibration of blade tip like this, can reduce the resistance of air-flow, also can effectively reduce noise, improve working efficiency of the present utility model, workmanship and the market competitiveness.
Certainly, the foregoing is only specific embodiment of the utility model, be not to limit the utility model practical range, all according to equivalence variation or modification that described in the utility model claim, structure, feature and principle are done, all should be included in the utility model claim.
Claims (7)
1. a noise-reducing type electric fan, it comprises: a wheel hub (1) and several take shape in the peripheral blade (2) of wheel hub (1), wherein, this blade (2) radially distributes in wheel hub (1) periphery, it is characterized in that: the surface forming in blade every described (2) has fin (21) and a plurality of concave point groove (22) that is positioned at fin (21) side.
2. a kind of noise-reducing type electric fan according to claim 1, it is characterized in that: described blade (2) has a lee face (201) and a windward side (202) relative with lee face (201), and described fin (21) and concave point groove (22) all take shape on lee face (201).
3. a kind of noise-reducing type electric fan according to claim 2, it is characterized in that: described fin (21) comprising: take shape in first fin (211) of lee face (201) end in described blade (2) and be also second fin (212) of column distribution with the first fin (211), wherein, between the first fin (211) and the second fin (212), form a sinking space (20), described concave point groove (22) is arranged in this sinking space (20).
4. a kind of noise-reducing type electric fan according to claim 3, is characterized in that: the two ends of described the first fin (211) and the second fin (212) all extend to the both sides of described blade (2).
5. a kind of noise-reducing type electric fan according to claim 3, it is characterized in that: described the second fin (212) comprising: two the first arc-shaped concave and the second arc-shaped concaves of fixing with lee face (201) one of described blade (2), this first arc-shaped concave and the second arc-shaped concave intersection are blade-like.
6. according to a kind of noise-reducing type electric fan described in claim 3-5 any one, it is characterized in that: the second fin (212) on blade described in each (2) is uniformly distributed along the annulus forming centered by wheel hub (1).
7. according to a kind of noise-reducing type electric fan described in claim 3 or 4, it is characterized in that: the first fin (211) on blade described in each (2) is uniformly distributed along the annulus forming centered by wheel hub (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556198.2U CN203453123U (en) | 2013-09-07 | 2013-09-07 | Noise reduction fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556198.2U CN203453123U (en) | 2013-09-07 | 2013-09-07 | Noise reduction fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453123U true CN203453123U (en) | 2014-02-26 |
Family
ID=50133002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556198.2U Expired - Fee Related CN203453123U (en) | 2013-09-07 | 2013-09-07 | Noise reduction fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453123U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405654A (en) * | 2014-11-28 | 2015-03-11 | 德清振达电气有限公司 | Mute axial flow fan |
| CN104481931A (en) * | 2014-11-28 | 2015-04-01 | 德清振达电气有限公司 | Low-noise axial fan |
| CN106993431A (en) * | 2016-01-23 | 2017-08-01 | 安德烈·斯蒂尔股份两合公司 | Cutter for the workpiece head of free cutting machine |
| CN114876828A (en) * | 2021-02-05 | 2022-08-09 | 全亿大科技（佛山）有限公司 | Fan with cooling device |
| US11808282B1 (en) | 2022-03-02 | 2023-11-07 | Aaon, Inc. | Propeller fan assembly with silencer seeds and concentric hub and method of use |
-
2013
- 2013-09-07 CN CN201320556198.2U patent/CN203453123U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405654A (en) * | 2014-11-28 | 2015-03-11 | 德清振达电气有限公司 | Mute axial flow fan |
| CN104481931A (en) * | 2014-11-28 | 2015-04-01 | 德清振达电气有限公司 | Low-noise axial fan |
| CN106993431A (en) * | 2016-01-23 | 2017-08-01 | 安德烈·斯蒂尔股份两合公司 | Cutter for the workpiece head of free cutting machine |
| CN106993431B (en) * | 2016-01-23 | 2022-01-04 | 安德烈·斯蒂尔股份两合公司 | Cutting knife for workpiece head of free cutting machine |
| CN114876828A (en) * | 2021-02-05 | 2022-08-09 | 全亿大科技（佛山）有限公司 | Fan with cooling device |
| US11808282B1 (en) | 2022-03-02 | 2023-11-07 | Aaon, Inc. | Propeller fan assembly with silencer seeds and concentric hub and method of use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN FIRST-DO INDUSTRY INVESTMENT CO., LTD. Free format text: FORMER OWNER: ZHANG ZHENGKUN Effective date: 20140902 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140902 Address after: Hengli Town 523000 Guangdong city in Dongguan province across the pit along the Yangtze River Industrial Zone No. 8 building two layer Patentee after: FIRSTDO INVESTMENT ENTERPRISE CO., LTD. Address before: Hengli Town 523000 Guangdong city of Dongguan Province along the Yangtze River Industrial Zone No. 8 pit building Patentee before: Zhang Zhengkun |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20160907 |