CN105221480A - Fan structure - Google Patents
Fan structure Download PDFInfo
- Publication number
- CN105221480A CN105221480A CN201510730651.0A CN201510730651A CN105221480A CN 105221480 A CN105221480 A CN 105221480A CN 201510730651 A CN201510730651 A CN 201510730651A CN 105221480 A CN105221480 A CN 105221480A
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- China
- Prior art keywords
- fan structure
- mating face
- section
- established angle
- paragraph
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Classifications
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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 present invention discloses a kind of fan structure, and it comprises a wheel hub and multiple flabellum, and wherein each flabellum comprises a first paragraph portion and a second segment portion, and aforementioned first paragraph portion connects wheel hub, and second segment portion then connects first paragraph portion.Form one first mating face between aforementioned first paragraph portion and wheel hub, wherein there is between the first mating face and fan structure bottom plane one first established angle.Form one second mating face between aforementioned first and second section of portion, and have one second established angle between the second mating face and bottom plane, wherein the second established angle is less than the first established angle.
Description
The present invention is the divisional application of Chinese invention patent application (application number: 201010539726.4, the applying date: on November 5th, 2010, denomination of invention: fan structure).
Technical field
The present invention relates to a kind of fan structure, particularly a kind of fan structure with multi-section type flabellum.
Background technique
First refer to Fig. 1 a, traditional fan structure generally includes a wheel hub A and multiple flabellum B, and aforementioned flabellum B is fixed on around wheel hub A, produces air-flow when fan structure rotates by flabellum B.Then Fig. 1 b is referred to, existing flabellum B only has single-curved surface structure usually, when for increasing fan flow, significantly must increase established angle a or promote rotating speed, but increasing established angle a easily makes fluid be separated from flabellum B surface, so will cause decrease in efficiency, aerodynamic noise (AerodynamicNoise) can be increased simultaneously, and then easily cause the problems such as vibration and noise by the mode promoting rotating speed.
In existing fan structure, the region producing larger pressure reduction is usually only distributed on the part aerofoil outside flabellum and (refers to shown in the region D1 in Fig. 1 c), now fluid more easily produces eddy current and segregation phenomenon, and gas kinetic energy and the more difficult lifting of pressure reduction.
Summary of the invention
For solving the problem, one embodiment of the invention provide a kind of fan structure, and can rotate around a central shaft, aforesaid central axle is mutually vertical with a bottom plane, and it not only can reduce noise and can raising efficiency.Aforementioned fan structure comprises the wheel hub of a circle and multiple flabellum, this multiple flabellum is located on the periphery of wheel hub, wherein each flabellum comprises a first paragraph portion and a second segment portion, aforementioned first paragraph portion connects wheel hub, second segment portion then connects first paragraph portion, and is extended outside fan structure by first paragraph portion.Form one first mating face between aforementioned first paragraph portion and wheel hub, wherein there is between the first mating face and bottom plane one first established angle.Form one second mating face between aforementioned first, second section of portion, and have one second established angle between the second mating face and bottom plane, wherein the second established angle is less than the first established angle.
In one embodiment, aforementioned first paragraph portion has the first windward side of an arcuation, connect first, second mating face and cave in inside first paragraph portion, second segment portion has the second windward side of an arcuation, connects second, third mating face and caves in inside second segment portion.
In one embodiment, aforementioned first paragraph portion has the first outlet air surface of an arcuation, connect first, second mating face and protrude outside first paragraph portion, second segment portion has the second outlet air surface of an arcuation, connects second, third mating face and protrudes outside second segment portion.
In one embodiment, aforementioned first paragraph portion has one first center line, wherein the first center line and first, second mating face equidistant, in addition second segment portion has one second center line, wherein the second center line and second, third mating face equidistant, and the length of the second center line is greater than the length of the first center line.
In one embodiment, aforementioned first paragraph portion is substantially equal to second segment portion along fan structure width in the radial direction along fan structure width in the radial direction.
In one embodiment, the height of second previous paragraph portion centrally on axle direction is less than or equal to the height of first paragraph portion centrally on axle direction.
In one embodiment, the centre of curvature on first, second mating face aforementioned is all positioned on central shaft.
In one embodiment, aforementioned flabellum more comprises one the 3rd section of portion, connect second segment portion and extended outside fan structure by second segment portion, one the 3rd mating face is formed between aforementioned second, third section of portion, and the 3rd has one the 3rd established angle between mating face and bottom plane, wherein the 3rd established angle is less than the second established angle.
In one embodiment, aforementioned 3rd section of portion has the 3rd windward side of an arcuation, connects second, third mating face and caves in inside the 3rd section of portion.
In one embodiment, aforementioned 3rd section of portion has the 3rd outlet air surface of an arcuation, connects second, third mating face and protrudes outside the 3rd section of portion.
In one embodiment, aforementioned 3rd section of portion has an end face, is positioned at flabellum outer ledge, wherein has one the 4th established angle between end face and bottom plane, and aforementioned 4th established angle is less than the 3rd established angle.
In one embodiment, the differential seat angle of aforementioned 4th established angle and the first established angle is less than 20 °.
In one embodiment, second previous paragraph portion has one second center line, wherein the second center line and second, third mating face equidistant, and the 3rd section of portion has one the 3rd center line, wherein the 3rd center line and aforementioned 3rd mating face and end face equidistant, and the length of the second center line is greater than the length of the 3rd center line.
In one embodiment, aforementioned 3rd section of portion is substantially equal to first, second section of portion along fan structure width in the radial direction along fan structure width in the radial direction.
In one embodiment, aforementioned 3rd section of portion centrally axial height be less than or equal to second segment portion centrally axial height.
In one embodiment, the centre of curvature on aforementioned 3rd mating face is positioned on central shaft.
In one embodiment, the centre of curvature of aforementioned end face is positioned on central shaft.
For making above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly also coordinates appended accompanying drawing to elaborate.
Accompanying drawing explanation
Fig. 1 a is existing fan structure schematic diagram;
Fig. 1 b is the flow field schematic diagram around existing flabellum;
Fig. 1 c is existing fan structure pressure distribution schematic diagram;
Fig. 2 is the fan structure schematic diagram of one embodiment of the invention;
Fig. 3 is the fan structure side view in Fig. 2;
Fig. 4 is the fan structure top view in Fig. 2;
Fig. 5 is first, second, third mating face and the end face established angle schematic diagram relative to bottom plane;
Fig. 6 is the fan structure top view in Fig. 2;
Fig. 7 is the fan structure pressure distribution schematic diagram of one embodiment of the invention; And
Fig. 8 is the fan structure of one embodiment of the invention and the static pressure-flow curve of existing fan structure and total pressure efficiency curve synoptic diagram.
Primary component symbol description
Wheel hub 10, A
Flabellum 20, B
First paragraph portion 21
First windward side 211
First outlet air surface 212
Second segment portion 22
Second windward side 221
Second outlet air surface 222
3rd section of portion 23
3rd windward side 231
3rd outlet air surface 232
Established angle a
Central shaft C
Region D1, D2
Bottom plane P
First centre line L 1
Second centre line L 2
3rd centre line L 3
First mating face S1
Second mating face S2
3rd mating face S3
End face S4
First established angle θ 1
Second established angle θ 2
3rd established angle θ 3
4th established angle θ 4
Height H 21, H22, H23
Width W 1, W2, W3
Embodiment
First Fig. 2, Fig. 3 is seen also, the fan structure of one embodiment of the invention mainly comprises wheel hub 10 and multiple flabellum 20 of a circle, aforementioned flabellum 20 is fixed on the outer surface of wheel hub 10, when fan structure rotates around a central shaft C, produces stable air-flow by flabellum 20.As shown in Figure 2 and Figure 3, aforementioned flabellum 20 is made up of at least two section portions, flabellum 20 in the present embodiment comprises a second segment portion of first paragraph portion 21, one 22 and one the 3rd section of portion 23, aforementioned first paragraph portion 21 connects wheel hub 10,22, second segment portion connects first paragraph portion 21, and is extended outside fan structure by first paragraph portion 21; In addition, aforementioned 3rd section of portion 23 connects second segment portion 22, and is extended outside fan structure by second segment portion 22.As can be seen from Fig. 3, the fan structure of the present embodiment is roughly parallel to a bottom plane P, aforementioned bottom plane P is perpendicular to central shaft C, and first, second, third section of portion 21,22,23 has height H 21, H22, H23 respectively, wherein H21≤H22≤H23 on the direction of central shaft C.
Then Fig. 4, Fig. 5 is seen also, one first mating face S1 is formed between the first paragraph portion 21 of each flabellum 20 aforementioned and wheel hub 10, one second mating face S2 is formed between first and second section of portion 21,22, then be formed with one the 3rd mating face S3 between second and the 3rd section of portion 22,23, the outer ledge in this external 3rd section of portion 23 has an end face S4.As can be seen from Fig. 4, first, second, and third mating face S1, S2, S3 of the present embodiment and end face S4 arranges with concentric circular fashion, and that is the centre of curvature of first, second, and third mating face S1, S2, S3 and end face S4 is all positioned on central shaft C.Specifically be, one first, second, third established angle θ 1, θ 2, θ 3 (referring to Fig. 5) is formed respectively between aforementioned first, second, and third mating face S1, S2, S3 and bottom plane P, position is then formed with one the 4th established angle θ 4 between the end face S4 and bottom plane P of the 3rd section of portion 23 outer ledge, wherein θ 1> θ 2> θ 3> θ 4, and θ 1-θ 4<20 °.
Please continue to refer to Fig. 4, aforementioned first, second, and third section of portion 21,22,23 has width W 1, W2, W3, wherein W1=W2=W3 in the radial direction respectively at fan structure, but, aforementioned each width ratio also visual different design requirement and adjusting.Will be appreciated that, first, second, and third centre line L 1, L2, L3 can be defined respectively in central authorities of first, second, and third section of portion 21,22,23, aforementioned first centre line L 1 is equidistant with first and second mating face S1, S2, second centre line L 2 is equidistant with second and third mating face S2, S3,3rd centre line L 3 be with the 3rd mating face and end face S4 equidistant, wherein the length of the second centre line L 2 is greater than the length of the first centre line L 1 and the 3rd centre line L 3.But, the length scale of aforementioned each center line also visual different design requirement and adjusting.
Refer to Fig. 6 again, the first windward side 211 and the first outlet air surface 212 of arcuation is formed as can be seen from Figure in the first paragraph portion 21 of flabellum 20, aforementioned first windward side 211 connects first and second mating face S1, S2 and towards side direction depression in first paragraph portion 21, and the first outlet air surface 212 connects first and second mating face S1, S2 and lateral direction towards first paragraph portion 21 is protruded.
In like manner, the second segment portion 22 of flabellum 20 is formed the second windward side 221 and the second outlet air surface 222 of arcuation, wherein the second windward side 221 connects this second and third mating face S2, S3 and towards side direction depression in second segment portion 22, and the second outlet air surface 222 connects second and third mating face S2, S3 and lateral direction towards second segment portion 22 is protruded.In addition, 3rd section of portion 23 of flabellum 20 is formed the 3rd windward side 231 and the 3rd outlet air surface 232 of arcuation, wherein the 3rd windward side 231 connects the 3rd mating face S3 and end face S4, and side direction depression in the 3rd section of portion 23,3rd outlet air surface 232 is connection the 3rd mating face S3 and end face S4, and protrudes towards the lateral direction in the 3rd section of portion 23.
In addition, can find out that the part outside flabellum can occur tradition wing pressure distribution Maximum differential pressure by Fig. 1 c, on aerofoil, fluid more easily produces eddy current and segregation phenomenon, gas kinetic energy and the more difficult lifting of pressure reduction, and can obviously find out after comparison diagram 7 and Fig. 1 c, in fan structure of the present invention, the area distribution comparatively wide (as shown in the region D2 in Fig. 7) that pressure reduction is larger, therefore the fluid on flabellum not easily produces eddy current or segregation phenomenon, and then can effectively lift gas kinetic energy, pressure reduction and efficiency.Then, refer to Fig. 8, can find after the static pressure-flow curve (P-Qcurve) and total pressure efficiency of relatively the present invention and existing fan structure, static pressure-flow curve (P-Qcurve) of the present invention and total pressure efficiency curve are better than traditional fan structure significantly.
In sum, the invention provides a kind of fan structure, it mainly adopts the flabellum of multi-section type to design, and aforementioned each flabellum can be made up of two or more sections of portions, and each section of established angle formed between portion and bottom plane has the characteristic of outwards successively decreasing.On the other hand, the present invention is by the arc structure being formed with depression respectively and protrude on the windward side and outlet air surface in each section of portion, with focused airflow, increase flow velocity and reduce the advantage such as noise, and then the efficiency that significantly can promote fan structure is to reach the object of power and energy saving.
Although disclose the present invention in conjunction with aforesaid embodiment, however itself and be not used to limit the present invention.Person skilled in the art in the technical field of the invention, without departing from the spirit and scope of the present invention, can do a little change and retouching.Therefore, what protection scope of the present invention should define with the claim of enclosing is as the criterion.
Claims (11)
1. a fan structure, it comprises:
Wheel hub;
Multiple flabellum, is located on the periphery of this wheel hub, and wherein each this flabellum comprises:
First paragraph portion, connects this wheel hub, wherein forms one first mating face between this first paragraph portion and this wheel hub, and has one first established angle between this first mating face and a bottom plane of this fan structure;
Second segment portion, connect this first paragraph portion, and extended outside this fan structure by this first paragraph portion, wherein form one second mating face between this first, second section of portion, and between this second mating face and this bottom plane, there is one second established angle, wherein this second established angle is less than this first established angle; And
3rd section of portion, connect this second segment portion and extended outside this fan structure by this second segment portion, one the 3rd mating face is formed between this second segment portion and the 3rd section of portion, and there is between the 3rd mating face and this bottom plane one the 3rd established angle, wherein the 3rd established angle is less than this second established angle, 3rd section of portion has an end face, be positioned at this flabellum outer ledge, and there is between this end face and this bottom plane one the 4th established angle, wherein the 4th established angle is less than the 3rd established angle, this first and the 4th differential seat angle between established angle is less than 20 °
In this first paragraph portion, this second segment portion and the 3rd section of central authorities of portion can define first, second, and third center line respectively, and wherein the length of this second center line is greater than the length of the first center line and the 3rd center line,
Wherein the centre of curvature on this first and second mating face is all positioned on a central shaft of this fan structure, and the centre of curvature of this end face is positioned on the central shaft of this fan structure, and the centre of curvature on the 3rd mating face is positioned on this central shaft.
2. fan structure as claimed in claim 1, wherein this first paragraph portion has the first windward side of an arcuation, connect this first and second mating face and cave in inside this first paragraph portion, this second segment portion has the second windward side of an arcuation, connects this second and third mating face and caves in inside this second segment portion.
3. fan structure as claimed in claim 1, wherein this first paragraph portion has the first outlet air surface of an arcuation, connect this first and second mating face and protrude outside this first paragraph portion, this second segment portion has the second outlet air surface of an arcuation, connects this second and third mating face and protrudes outside this second segment portion.
4. fan structure as claimed in claim 1, wherein this first center line and this first and second mating face equidistant, this second center line and this second and third mating face equidistant.
5. fan structure as claimed in claim 1, wherein this first paragraph portion is substantially equal to this second segment portion along this fan structure width in the radial direction along this fan structure width in the radial direction.
6. fan structure as claimed in claim 1, wherein this second segment portion is less than or equal to this first paragraph portion along the height on this central axis direction along the height on this central axis direction.
7. fan structure as claimed in claim 1, wherein the 3rd section of portion has the 3rd windward side of an arcuation, connects this second and third mating face and caves in inside the 3rd section of portion.
8. fan structure as claimed in claim 1, wherein the 3rd section of portion has the 3rd outlet air surface of an arcuation, connects this second and third mating face and protrudes outside the 3rd section of portion.
9. fan structure as claimed in claim 1, wherein this second center line is equidistant with this second and third mating face, the 3rd center line and the 3rd mating face equidistant with this end face.
10. fan structure as claimed in claim 1, wherein the 3rd section of portion is substantially equal to this first and second section of portion along this fan structure width in the radial direction along this fan structure width in the radial direction.
11. fan structures as claimed in claim 1, wherein the 3rd section of portion is less than or equal to the height of this second segment portion along this central axis direction along the height of this central axis direction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105397264A CN102465917A (en) | 2010-11-05 | 2010-11-05 | Fan structure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105397264A Division CN102465917A (en) | 2010-11-05 | 2010-11-05 | Fan structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221480A true CN105221480A (en) | 2016-01-06 |
Family
ID=46069914
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105397264A Pending CN102465917A (en) | 2010-11-05 | 2010-11-05 | Fan structure |
| CN201510730651.0A Pending CN105221480A (en) | 2010-11-05 | 2010-11-05 | Fan structure |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105397264A Pending CN102465917A (en) | 2010-11-05 | 2010-11-05 | Fan structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102465917A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110325745A (en) * | 2017-02-28 | 2019-10-11 | 三菱电机株式会社 | Propeller fan, pressure fan and air conditioner |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629129A (en) * | 2013-11-20 | 2014-03-12 | 广州商科信息科技有限公司 | Fan and fan device |
| JP2016166558A (en) * | 2015-03-09 | 2016-09-15 | 株式会社デンソー | Air blower |
| CN106762828A (en) * | 2017-01-19 | 2017-05-31 | 梁耀文 | Fan leaf annular multistage blade structure |
| CN108087333A (en) * | 2017-12-08 | 2018-05-29 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
| CN108087302A (en) * | 2017-12-08 | 2018-05-29 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
| EP3974659A4 (en) * | 2019-05-21 | 2022-05-11 | Mitsubishi Electric Corporation | Axial fan, blower, and refrigeration cycle apparatus |
| EP4130487A4 (en) * | 2020-03-24 | 2023-05-03 | Mitsubishi Electric Corporation | Axial fan, blowing device, and refrigeration cycle device |
| CN114526252A (en) * | 2022-02-22 | 2022-05-24 | 宁波公牛生活电器有限公司 | Fan blade, fan and invisible fan lamp |
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| US20030012656A1 (en) * | 2001-06-12 | 2003-01-16 | Kyung Seok Cho | Axial flow fan |
| US20030044280A1 (en) * | 2001-08-28 | 2003-03-06 | Kim Seong Chun | Turbo fan |
| CN101372987A (en) * | 2007-08-24 | 2009-02-25 | 富准精密工业(深圳)有限公司 | Fan vane structure and centrifugal fan having the same |
| CN201250797Y (en) * | 2008-07-21 | 2009-06-03 | 蔡惠玲 | Improved fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000110785A (en) * | 1998-10-05 | 2000-04-18 | Calsonic Corp | Axial fan |
| KR101328559B1 (en) * | 2006-02-03 | 2013-11-13 | 한라비스테온공조 주식회사 | Axial flow fan |
| CN201250799Y (en) * | 2008-09-08 | 2009-06-03 | 瑞安市日正汽车部件有限公司 | High wind low noise axial fan |
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2010
- 2010-11-05 CN CN2010105397264A patent/CN102465917A/en active Pending
- 2010-11-05 CN CN201510730651.0A patent/CN105221480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030012656A1 (en) * | 2001-06-12 | 2003-01-16 | Kyung Seok Cho | Axial flow fan |
| US20030044280A1 (en) * | 2001-08-28 | 2003-03-06 | Kim Seong Chun | Turbo fan |
| CN101372987A (en) * | 2007-08-24 | 2009-02-25 | 富准精密工业(深圳)有限公司 | Fan vane structure and centrifugal fan having the same |
| CN201250797Y (en) * | 2008-07-21 | 2009-06-03 | 蔡惠玲 | Improved fan |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110325745A (en) * | 2017-02-28 | 2019-10-11 | 三菱电机株式会社 | Propeller fan, pressure fan and air conditioner |
| CN110325745B (en) * | 2017-02-28 | 2021-05-11 | 三菱电机株式会社 | Propeller fan, blower, and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102465917A (en) | 2012-05-23 |
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Application publication date: 20160106 |