CN102367810A - Low-noise fan - Google Patents
Low-noise fan Download PDFInfo
- Publication number
- CN102367810A CN102367810A CN2011101365447A CN201110136544A CN102367810A CN 102367810 A CN102367810 A CN 102367810A CN 2011101365447 A CN2011101365447 A CN 2011101365447A CN 201110136544 A CN201110136544 A CN 201110136544A CN 102367810 A CN102367810 A CN 102367810A
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- China
- Prior art keywords
- blade
- blower fan
- noise
- projection
- streamlined
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a low-noise fan, which comprises a wheel hub (1) and three blades (2). The surface of each of the blades (2) is provided with streamlined stream-guiding bulges (3), further, the tail part of each of the blades (2) is provided with sawteeth (3); and the blades (2) are evenly distributed on the periphery of the wheel hub (1). The fan disclosed by the invention has a simple structure, high strength for the blades and low noise.
Description
Technical field
The present invention relates to a kind of blower fan, or rather, is a kind of low noise blower fan that is applied in spinning and weaving workshop.
Background technique
Owing in the weaving course of working of cotton yarn, can produce a large amount of dirt bits and cotton-wool, have a strong impact on working environment and workman healthy of spinning and weaving workshop, blower fan or fan make the vitiated air in the workshop pass through corresponding dusting apparatus in a large number on the textile industry at present; These blower fans or fan are being realized above-mentioned effect in varying degrees, have improved the working environment in workshop, but the complex structure of these equipment; Dirt bits and cotton-wool can accumulate attached on the blade surface; Be difficult to cleaning, influence leaf longevity, and spinning and weaving workshop be in order to improve air quality fast; A large amount of fans or blower fan often are set, bring serious noise pollution to spinning and weaving workshop.
China disclosure of the Invention CN 200510025225.3 discloses a kind of axial-flow blower, specifically to using the improvement at the more powerful axial-flow blower of high temperature occasion.The fan blade of existing axial-flow blower generally adopts PBT material or steel material to make, and its relative weight is heavy, and noise is also bigger because its friction factor is relatively large.The fan blade of axial-flow blower of the present invention adopts the splendid magnesium alloy materials of thermal conductivity that is shaped through die-casting process to make; Owing to adopted magnesium alloy materials; Its significant effect is: make this a part of weight descend 75% especially, thereby the cost of transportation of product also obviously descends.Simultaneously, the air quantity of blower fan is increased, power of motor, electric machine temperature rise and noise reduce, and blower fan prolongation in working life etc. are effect actively.Meanwhile solve preferably, on the wheel rim of fan blade, be provided with two kinds of (increasing the weight of or loss of weight) corrective measures because of more carrying out the consideration that dynamic balancing is regulated behind the conversion materials.But the blade surface of this blower fan does not have the cleanliness projection, and intensity is lower, and the blade afterbody does not have acute tooth, and noise is bigger.
China disclosure of the Invention CN200610172568.7 discloses a kind of axial-flow blower of outdoor unit of air conditioner.This axial-flow blower comprises a wheel shaft that is connected with the running shaft of motor; And at least one blade that contacts with wheel shaft; Wherein blade has the part from the predetermined part of wheel shaft to blade the entire portion from wheel shaft to the blade outer end; And from another part of predetermined part to the blade outer end of blade; This part has equal predetermined inclination, and this another part is elevated along the pressure surface direction of blade, and wherein the ratio of the internal diameter of axial-flow blower and external diameter is between about 0.35 to about 0.4.But this blower fan has same shortcoming, and blade surface does not have the cleanliness projection, and intensity is lower, and the blade afterbody does not have acute tooth, and noise is bigger.
Chinese patent CN 200520089053.1 discloses a kind of axial-flow blower; It need not change the blade profile design of existing blower fan; And be that its vane trailing edge is processed sawtooth pattern; It is well-regulated from the coming off of trailing edge that this sawtooth has suppressed karman vortex to a great extent, thereby significantly improved the efficient of axial-flow blower and reduced the noise of blower fan, is applicable to the axial-flow blower and the axial flow compressor of any pattern; The height of trailing edge sawtooth is 5%～17% with the ratio of local chord length, and addendum angle is 30 °～120 °; Experiment showed, that in a large number this method effect is remarkable, simple, cost is low.But the blade surface of this blower fan does not have streamlined projection, and blade strength is lower.
China disclosure of the Invention CN 201110000017.3 discloses a kind of a kind of bionical axial-flow blower efficient, energy-conservation, low noise that has; It comprises axial-flow blower; Every leaf blade afterbody in the said axial-flow blower all has a plurality of serrated slot that do not wait; This not the equidistance sawtooth maelstrom that the air-out place produces is cut, is carded to countless little eddy current, and the viscosity air-flow of fan blade root is effectively separated, leads, causing becomes desirable air-flow.Advantage: the blower fan that adopts equidistance saw tooth structure not is after testing demonstration through FFT noise software repeatedly; Compare the blade profile of no saw tooth structure own; Noise can reduce about 1.5dB; And can reduce 1dB with respect to the blade profile of equidistance saw tooth structure, in the unit of axial-flow blower, played the effect of optimizing noise.But the blade surface of this blower fan does not have streamlined projection, and intensity is lower.
Summary of the invention
The present invention mainly is the technical problem that solves the existing in prior technology insufficiency of function, thereby provides a kind of simple in structure, and blade strength is high, the blower fan that noise is little.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: a kind of low noise blower fan; Comprise wheel hub and 3 blades; The surface of said blade has streamlined water conservancy diversion projection and afterbody that sawtooth is arranged, said blade be evenly distributed on wheel hub around.
As preferred embodiment of the present invention, the spacing between adjacent two of the said streamlined projection is more than or equal to 1/2 of width of blade, and less than 1.5 times of width of blade.
As preferred embodiment of the present invention, the spacing between adjacent two of the said streamlined projection equals the width of blade.
As preferred embodiment of the present invention, said sawtooth is covered with the length direction of blade.
Therefore, advantage of the present invention is simple in structure, and blade strength is high, and noise is little.
Description of drawings
Fig. 1 is the structural representation of low noise blower fan of the present invention;
Fig. 2 is the low noise blower fan plan view among Fig. 1;
Fig. 3 is the low noise blower fan right elevation among Fig. 2;
Fig. 4 is the low noise blower fan left view among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
The purpose of this invention is to provide a kind of simple in structurely, cost is lower, filters the adjustable Rose Box of sum of series precision simultaneously.
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, a kind of low noise blower fan comprises wheel hub 1 and 3 blades 2, and the surface of said blade 2 has streamlined water conservancy diversion projection 3 and afterbody that sawtooth 4 is arranged, said blade 2 be evenly distributed on wheel hub 1 around.
Said streamlined projection 3 is evenly arranged along blade 1 length direction.
Spacing between adjacent two of the said streamlined projection is more than or equal to 1/2 of width of blade, and less than 1.5 times of width of blade.
Spacing between adjacent two of the said streamlined projection equals the width of blade.
Said sawtooth 3 is covered with the length direction of blade 1.
Below only with a mode of execution mentality of designing of the present invention is described, under the situation that system allows, the present invention can expand to external more function module simultaneously, thereby expands its function to greatest extent.
The above; Be merely embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any those of ordinary skill in the art are in the technical scope that the present invention disclosed, and variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (5)
1. a low noise blower fan comprises wheel hub (1) and 3 blades (2), it is characterized in that: the surface of said blade (2) has streamlined water conservancy diversion projection (3) and afterbody that sawtooth (4) is arranged, said blade (2) be evenly distributed on wheel hub (1) around.
2. blower fan according to claim 1 is characterized in that, said streamlined projection (3) is evenly arranged along blade (1) length direction.
3. blower fan according to claim 2 is characterized in that, the spacing between adjacent two of the said streamlined projection (3) is more than or equal to 1/2 of blade (1) width, and less than 1.5 times of blade (1) width.
4. blower fan according to claim 3 is characterized in that, the spacing between adjacent two of the said streamlined projection (3) equals the width of blade (1).
5. blower fan according to claim 1 is characterized in that, said sawtooth (4) is covered with the length direction of blade (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101365447A CN102367810A (en) | 2011-05-25 | 2011-05-25 | Low-noise fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101365447A CN102367810A (en) | 2011-05-25 | 2011-05-25 | Low-noise fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102367810A true CN102367810A (en) | 2012-03-07 |
Family
ID=45760397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101365447A Pending CN102367810A (en) | 2011-05-25 | 2011-05-25 | Low-noise fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367810A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292441A (en) * | 2013-06-25 | 2013-09-11 | 吉林大学 | Bionic noise-reducing air conditioner grid |
| JP2016065536A (en) * | 2014-09-18 | 2016-04-28 | 株式会社デンソー | Air blower |
| CN106104007A (en) * | 2014-03-13 | 2016-11-09 | 麦格纳动力系巴德霍姆堡有限责任公司 | There is the axial fan of aerodynamics stator pillar |
| CN108167224A (en) * | 2017-12-27 | 2018-06-15 | 泛仕达机电股份有限公司 | It is a kind of that the blade of multilayer denoising structure and the fan including the blade are set |
| CN108866797A (en) * | 2018-06-07 | 2018-11-23 | 广东南豆科技有限公司 | A kind of low-noise fan purification mechanism |
| CN114738319A (en) * | 2022-04-20 | 2022-07-12 | 浙江尚扬通风设备有限公司 | Low-noise axial flow fan and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059192U (en) * | 1989-12-09 | 1990-07-11 | 上海交通大学 | Low noise axial-flow blower |
| CN1982729A (en) * | 2003-09-05 | 2007-06-20 | Lg电子株式会社 | Axial flow fan |
| CN201241864Y (en) * | 2008-08-15 | 2009-05-20 | 新昌县科贸实业有限公司 | Wind impeller for fan |
| CN102022380A (en) * | 2011-01-01 | 2011-04-20 | 杭州顿力电器有限公司 | Bionic axial-flow fan |
-
2011
- 2011-05-25 CN CN2011101365447A patent/CN102367810A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059192U (en) * | 1989-12-09 | 1990-07-11 | 上海交通大学 | Low noise axial-flow blower |
| CN1982729A (en) * | 2003-09-05 | 2007-06-20 | Lg电子株式会社 | Axial flow fan |
| CN201241864Y (en) * | 2008-08-15 | 2009-05-20 | 新昌县科贸实业有限公司 | Wind impeller for fan |
| CN102022380A (en) * | 2011-01-01 | 2011-04-20 | 杭州顿力电器有限公司 | Bionic axial-flow fan |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292441A (en) * | 2013-06-25 | 2013-09-11 | 吉林大学 | Bionic noise-reducing air conditioner grid |
| CN103292441B (en) * | 2013-06-25 | 2016-03-30 | 吉林大学 | Bionical noise reduction air conditioner grid |
| CN106104007A (en) * | 2014-03-13 | 2016-11-09 | 麦格纳动力系巴德霍姆堡有限责任公司 | There is the axial fan of aerodynamics stator pillar |
| CN106104007B (en) * | 2014-03-13 | 2019-05-21 | 麦格纳动力系巴德霍姆堡有限责任公司 | Axial fan with aerodynamics stator pillar |
| US10337525B2 (en) | 2014-03-13 | 2019-07-02 | Magna Electronics Inc. | Vehicle cooling fan with aerodynamic stator struts |
| JP2016065536A (en) * | 2014-09-18 | 2016-04-28 | 株式会社デンソー | Air blower |
| CN108167224A (en) * | 2017-12-27 | 2018-06-15 | 泛仕达机电股份有限公司 | It is a kind of that the blade of multilayer denoising structure and the fan including the blade are set |
| CN108866797A (en) * | 2018-06-07 | 2018-11-23 | 广东南豆科技有限公司 | A kind of low-noise fan purification mechanism |
| CN114738319A (en) * | 2022-04-20 | 2022-07-12 | 浙江尚扬通风设备有限公司 | Low-noise axial flow fan and using method thereof |
| CN114738319B (en) * | 2022-04-20 | 2023-11-14 | 浙江尚扬通风设备有限公司 | Low-noise axial flow fan and using method thereof |
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Application publication date: 20120307 |