CN1590778A - Axial fan - Google Patents
Axial fan Download PDFInfo
- Publication number
- CN1590778A CN1590778A CNA031441378A CN03144137A CN1590778A CN 1590778 A CN1590778 A CN 1590778A CN A031441378 A CNA031441378 A CN A031441378A CN 03144137 A CN03144137 A CN 03144137A CN 1590778 A CN1590778 A CN 1590778A
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- CN
- China
- Prior art keywords
- fan blade
- fan
- air
- axial fan
- blade
- 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.)
- Pending
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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
- F04D29/384—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
An axial-flow fan with high air flow is composed of a hub connected with drive source, and several blades, which are connected to the external surface of hub and has several ribs on it. It features that said ribs are parallel to the rotation tracing of blade.
Description
Technical field
The present invention relates to a kind of axial fan (Axial Flow Fan), relate in particular to a kind of direction of controlling air flows, can stable air flow velocity, and can reduce the axial fan of the noise that air flows produces.
Background technique
Generally, axial fan (axial fan) is to be subjected to the rotating force of external drive source (as motor etc.) and to rotate, and the machine that air is axially blown.It is not only applicable to household appliances such as electric fan, air conditioner and refrigerator, is widely used in multiple fields such as space shuttle and generator yet.
Describe the axial fan of prior art in detail below with reference to Fig. 1 and Fig. 2.
As shown in the figure, existing axial fan 10 comprises the wheel hub (hub) 12 that combines with the live axle of motor and several fan blade (blade) 14 with air-supply effect that form at wheel hub 12 outer circumferential faces.The 3D shape of fan blade 14 is key factors of the decision air-flow character of axial fan 10.
The 3D shape that constitutes the fan blade 14 of axial fan 10 can be come concrete manifestation by compositing factors such as pivot angle, boss ratio, oblique angle, maximum deflection amount and max bend position.Is the shape of fan blade 14 often to use in the airmechanics field with these compositing factors of three-dimensional concept definition.
As follows with the shape definition of the mobile relevant fan blade 14 of fluid: as shown in Figure 1, the unilateral pressure back side 16 that is defined as of fans that can see when the position before fluid is sucked by axial fan 10 is position, upper reaches observation axial fan 10; The unilateral pressure side 18 that is defined as of the invisible fans of its reverse side.
In addition, at the radial direction end of fan blade 14, vane tip (blade tip) 24 connects the forward position (leading edge) 20 and edge, back (trailing edge) 22 of fan blade 14.
The forward position 20 of fan blade 14 is the parts that connect vane tip 24 1 sides and wheel hub 12, and along with the rotation of axial fan, air flow on the pressure side 18 from the forward position 20 of fan blade 14.Fan blade 14 back along 22 being the parts that connect vane tip 24 opposite sides and wheel hub 12, the air by pressure side 18 is back along 22 disengaging fan blade 14 from fan blade 14.
Aforesaid axial fan 10 rotates by motor driving, and under the action of pressure that causes with pressure side 18 at the pressure back side 16 of fan blade 14, the fluid of upstream side is to dirty side flow.Promptly by the rotation of axial fan 10, the air of axial fan 10 rear sides is side flow forward.
But the axial fan of aforesaid prior art has following problem.
During axial fan 10 rotations, from the forward position 20 of axial fan 10 to fan blade 14 back along 22 flow air because center of circle power is subjected to the effect to the power of vane tip 24, so the air that is directed along fan blade breaks away from fan blade by vane tip 24.This makes the air quantity minimizing of the air-flow that formed by fan blade.
In addition, the forward position 20 from fan blade produces noise to the back of fan blade 14 along the air of 22 guiding and to vane tip 24 flow air.
Summary of the invention
In order to solve the problems of the technologies described above, the objective of the invention is provides the axial fan of high efficiency low noise by the optimal design to the fan blade shape that constitutes axial fan.
To achieve these goals, the invention provides a kind of axial fan: the wheel hub that is connected with driving source with following structure; Several fan blade that form at the outer circumferential face of wheel hub; Outstanding formation and the fan blade rib parallel on the pressure side of fan blade with the rotating locus of fan blade.
Axial fan of the present invention has following effect:
Be provided with the fan blade rib on the pressure side of fan blade, the formation spaced a certain distance of said fans blade rib has prevented with the axle to be that the air that the center rotates outwards breaks away from, and has solved the air quantity minimizing problem that runs off and cause because of air.
Axial fan in the foregoing description has increased air quantity relatively for identical rotation number, has improved the air-supply efficient when being applied to various gas fan.
In addition, solved that near the air of the air that breaks away from and vane tip conflicts and the noise problem that produces.
Description of drawings
Fig. 1 is the schematic perspective view of common axial fan;
Fig. 2 is along the sectional view of I-I ' line among Fig. 1;
Fig. 3 is the schematic perspective view of structure of the preferred embodiment of axial fan of the present invention;
Fig. 4 is the front elevation of embodiment of the invention structure;
Fig. 5 is along the sectional view of A-A ' line among Fig. 4.
The critical piece description of reference numerals
100: axial fan 102: wheel hub (hub)
104: fan blade (blade) 106: forward position (leading edge)
108: edge, back (trailing edge) 110: vane tip (blade tip)
112: pressure side 114: the pressure back side
116: fan blade rib (blade rib)
Embodiment
Describe the structure of the preferred embodiment of axial fan of the present invention with reference to the accompanying drawings in detail.
Fig. 3 is the schematic perspective view of structure of the preferred embodiment of axial fan of the present invention; Fig. 4 is the front elevation of embodiment of the invention structure; Fig. 5 is along the sectional view of A-A ' line among Fig. 4.
As shown in the figure, axial fan 100 comprises the wheel hub 102 that combines with the live axle of motor and several fan blade 104 with air-supply effect that form at wheel hub 102 outer circumferential faces.The 3D shape of fan blade 104 is key factors of decision air-flow character in axial fan 100.
The unilateral pressure back side 114 that is defined as of fans that can see when the position before air is sucked by axial fan 100 is position, upper reaches observation axial fan 100; The unilateral pressure side 112 that is defined as of the invisible fans of its reverse side.And the radial direction edge of fan blade 104 is defined as the forward position 106 that connects fan blade 104 and the back vane tip 110 along 108.
By connecting the forward position 106 of vane tip 110 1 sides and the fan blade 104 of wheel hub 102, to pressure side 112 inflow air.Fan blade 104 by connecting vane tip 110 opposite sides and wheel hub 102 back along 108 is by the air disengaging fan blade 104 of pressure side 108.
The structure of fan blade 104 further specifies as follows.The forward position 106 of fan blade 104 is at the rear side of wheel hub 102, and the back of fan blade 104 forms in the front side of wheel hub 102 along 108, flow into the air rising of the pressure side 112 of fan blade 104 when making fan blade 104 rotations from the forward position 106 of fan blade 104.
Form several fan blade ribs 116 on the pressure side 112 of above-mentioned axial fan 100.On the front elevation of axial fan 100, the centre of curvature of fan blade rib 116 is concentric with wheel hub 102.And wheel hub 102 is concentric with the rotating center of fan blade 104.Said fans blade rib 116 projects upwards formation on the pressure side 112 of axial fan 100, and is parallel to rotating locus formation on the whole circular arc that fan blade 104 is occupied.Because fan blade 104 is that the center is about greatly more laterally in its week with wheel hub 102, the length of fan blade rib 116 is also elongated accordingly.On planimetric map, several fan blade ribs 116 that are formed on the pressure side 112 form concentric circles, and each fan blade 104 has the fan blade rib 116 of identical size, identical shaped, similar number.Fan blade rib 116 axial flows have identical curvature with each locational rotating locus of fan.
Below the effect of detailed axial fan of the present invention.
In this process, the air of axially being blown by fan blade 104 is subjected to the rotating force that causes with fan blade 104 frictions, to the direction rotation identical with fan blade 104 sense of rotation.The air of rotation is because be subjected to center of circle power effect, is subjected to the active force of radioactivity direction and moves to that direction so air is subjected to fan blade 104 centers.
But, at pressure side 112 upsides fan blade rib 116 is set in the embodiments of the invention, prevent that air breaks away from, and then prevent along the air of the radioactivity direction outflow of fan blade 104, make for identical rotation number, increased air quantity, increased air-supply efficient.
Though the front is described the present invention in detail, persons of ordinary skill in the art may appreciate that under the prerequisite of the spirit and scope of the invention of in not breaking away from right request scope, determining, can make change miscellaneous and modification.
Claims (2)
1, a kind of axial fan is characterized in that, comprising:
Wheel hub, fan blade, fan blade rib;
Wherein, above-mentioned wheel hub is connected with driving source;
Several fan blade are formed on the outer circumferential face of wheel hub;
The fan blade rib is outstanding to be formed on the pressure side of fan blade, and parallel with the rotating locus of fan blade.
2, axial fan according to claim 1 is characterized in that:
The formation spaced a certain distance of said fans blade rib, and each fan blade rib is forming along the direction of forward position to the back edge of fan blade from axial fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031441378A CN1590778A (en) | 2003-08-25 | 2003-08-25 | Axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031441378A CN1590778A (en) | 2003-08-25 | 2003-08-25 | Axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1590778A true CN1590778A (en) | 2005-03-09 |
Family
ID=34597414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031441378A Pending CN1590778A (en) | 2003-08-25 | 2003-08-25 | Axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1590778A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007019796A1 (en) * | 2005-08-19 | 2007-02-22 | Junhao Lin | A pressurized axial blower |
| DE202009003490U1 (en) | 2009-03-13 | 2009-06-25 | Listan Asia Inc., Gueishan | Fan module and fan blade group for flow guidance for this purpose |
| US8128359B2 (en) | 2009-03-12 | 2012-03-06 | Listan Asia Inc. | Air fan module and a flow directing blade assembly thereof |
| CN101761493B (en) * | 2008-12-22 | 2013-03-27 | 山洋电气株式会社 | Axial flow fan |
| CN103334954A (en) * | 2013-07-03 | 2013-10-02 | 浙江理工大学 | Small axial flow fan device provided with semi-cylindrical convex groove blades |
| CN104214131A (en) * | 2014-08-07 | 2014-12-17 | 苏州通力电气有限公司 | Impeller of submersible pump |
| CN104696278A (en) * | 2013-12-06 | 2015-06-10 | 日本电产株式会社 | Impeller and air blower |
| CN105186819A (en) * | 2014-06-17 | 2015-12-23 | 广东美芝制冷设备有限公司 | Rotor end cover of outer-rotor-type motor and outer-rotor-type motor with rotor end cover |
| CN107407290A (en) * | 2015-04-08 | 2017-11-28 | 雷顿股份公司 | Fan Blade Surface Features |
| CN111426146A (en) * | 2020-04-01 | 2020-07-17 | 李亚勤 | Cup for quickly cooling boiled water |
| CN114526251A (en) * | 2022-02-09 | 2022-05-24 | 欧普照明股份有限公司 | Fan blade structure and fan lamp |
| US11808282B1 (en) | 2022-03-02 | 2023-11-07 | Aaon, Inc. | Propeller fan assembly with silencer seeds and concentric hub and method of use |
-
2003
- 2003-08-25 CN CNA031441378A patent/CN1590778A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007019796A1 (en) * | 2005-08-19 | 2007-02-22 | Junhao Lin | A pressurized axial blower |
| CN101761493B (en) * | 2008-12-22 | 2013-03-27 | 山洋电气株式会社 | Axial flow fan |
| US8128359B2 (en) | 2009-03-12 | 2012-03-06 | Listan Asia Inc. | Air fan module and a flow directing blade assembly thereof |
| DE202009003490U1 (en) | 2009-03-13 | 2009-06-25 | Listan Asia Inc., Gueishan | Fan module and fan blade group for flow guidance for this purpose |
| CN103334954B (en) * | 2013-07-03 | 2016-02-17 | 浙江理工大学 | A kind of small axial flow fan device of blade band semi-cylindrical tongue |
| CN103334954A (en) * | 2013-07-03 | 2013-10-02 | 浙江理工大学 | Small axial flow fan device provided with semi-cylindrical convex groove blades |
| CN104696278A (en) * | 2013-12-06 | 2015-06-10 | 日本电产株式会社 | Impeller and air blower |
| CN105186819A (en) * | 2014-06-17 | 2015-12-23 | 广东美芝制冷设备有限公司 | Rotor end cover of outer-rotor-type motor and outer-rotor-type motor with rotor end cover |
| CN105186819B (en) * | 2014-06-17 | 2018-01-23 | 广东美芝制冷设备有限公司 | The rotor endcap of external rotor electric machine and there is its external rotor electric machine |
| CN104214131A (en) * | 2014-08-07 | 2014-12-17 | 苏州通力电气有限公司 | Impeller of submersible pump |
| CN107407290A (en) * | 2015-04-08 | 2017-11-28 | 雷顿股份公司 | Fan Blade Surface Features |
| US10539157B2 (en) | 2015-04-08 | 2020-01-21 | Horton, Inc. | Fan blade surface features |
| US10662975B2 (en) | 2015-04-08 | 2020-05-26 | Horton, Inc. | Fan blade surface features |
| CN111426146A (en) * | 2020-04-01 | 2020-07-17 | 李亚勤 | Cup for quickly cooling boiled water |
| CN114526251A (en) * | 2022-02-09 | 2022-05-24 | 欧普照明股份有限公司 | Fan blade structure and fan lamp |
| 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 |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |