CN106762828A - Fan leaf annular multistage blade structure - Google Patents
Fan leaf annular multistage blade structure Download PDFInfo
- Publication number
- CN106762828A CN106762828A CN201710044450.4A CN201710044450A CN106762828A CN 106762828 A CN106762828 A CN 106762828A CN 201710044450 A CN201710044450 A CN 201710044450A CN 106762828 A CN106762828 A CN 106762828A
- Authority
- CN
- China
- Prior art keywords
- blade
- axle center
- group
- flabellum axle
- blade group
- 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
Links
- 241001075561 Fioria Species 0.000 title claims abstract description 15
- 241000883990 Flabellum Species 0.000 claims abstract description 39
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000002706 hydrostatic effect Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of fan leaf annular multistage blade structure, including flabellum axle center and at least two grade blade groups, the blade group includes the blade that multi-disc is set around flabellum axle center, connection ring is provided between adjacent two grade blades group, the distance in blade to the flabellum axle center in same grade blade group is equal, blade in same blade group has identical established angle, near the established angle of the established angle more than the blade group away from flabellum axle center of the blade group in flabellum axle center, near the axial projective area of the axial projective area less than the blade group away from flabellum axle center of the blade group in flabellum axle center, the ratio of the axial projective area between adjacent two grade blades group is 1：1.1~4.The connection ring effectively shares blade pressure, there can be bigger overall front face area, even if reducing rotating speed can cause that fan static pressure is reduced, but enhanced dynamic pressure effectively compensate for hydrostatic pressures losses, and reduction of speed noise reduction is realized while original operating efficiency is kept so as to reach.
Description
Technical field
The present invention relates to aeration technology field, particularly a kind of fan leaf annular multistage blade structure.
Background technology
The blower fan of cooling tower, its flabellum is to be arranged to form around axis for the blade ring of aerofoil profile or plate shape by multi-disc section, by
It is relatively large in diameter in flabellum（0.5 to 6.5 meter）, to keep flabellum stress relative equilibrium everywhere, the structure of each blade to be designed
It is smaller into its width of blade further away from axis.All it is by increasing leaf arc angle to reach Wind Volume when a diameter of fixed value of flabellum
The modes such as degree, increase width of blade, increase blade quantity, raising rotating speed are realized.Due to foregoing blade design principle, the number of blade
Measuring at most can be so that the projected area of adjacent blades overlaps, and instead resulting in air cannot circulate.And increase leaf arc angle
Fan energy consumption requirement is limited to increase width of blade, limiting value is there is also.Therefore method the most feasible is to improve blower fan
Rotating speed, but high-revolving blower fan can produce the noise of high-decibel so that and cooling tower cannot meet the standard of environmental monitoring evaluation.
The content of the invention
The invention provides a kind of fan leaf annular multistage blade structure, which employs brand-new blade design principle,
So that the overall front face area of flabellum is greatly increased, in the case of equivalent diameter, even if reduce rotation speed of fan can also keep filling
The ventilation of foot.
A kind of fan leaf annular multistage blade structure, including flabellum axle center and at least two grade blade groups, the blade group
Including the blade that multi-disc is set around flabellum axle center, connection ring is provided between adjacent two grade blades group, in same grade blade group
The distance in blade to flabellum axle center is equal, and the blade in same blade group has identical established angle, and the established angle is acute angle,
Near the established angle of the established angle more than the blade group away from flabellum axle center of the blade group in flabellum axle center, near the leaf in flabellum axle center
The axial projective area of piece group is less than the axial projective area of the blade group away from flabellum axle center, between adjacent two grade blades group
The ratio of axial projective area is 1：1.1~4.
Further, to be flexibly connected between the blade and flabellum axle center/connection ring, its established angle is solid by locking member
It is fixed.
Conventional fan flabellum is relatively large in diameter due to flabellum, to keep flabellum stress relative equilibrium everywhere, the knot of each blade
It is smaller that structure is both designed to its width of blade further away from axis.If flabellum is divided into multiple concentric annular regions at equal intervals,
Then further away from axis, the ratio that its blade area accounts for the concentric annular regions gross area can be substantially reduced.If the fan of conventional fan
Leaf rotating speed is reduced, then its rate of air circulation for driving also can be reduced accordingly.
Due to needing to need the blast in pipeline everywhere as uniform as possible during blower fan discharge quantity of fan, and away from flabellum axle center
Blade group has linear velocity higher, to avoid blower fan discharge quantity of fan uneven, so being needed away from the blade group in flabellum axle center
Less established angle is set, with reduce in pipeline it is each between pressure difference.
Fan leaf annular multistage blade structure disclosed by the invention, it passes through to change blade structure, has abolished traditional fan
The technology chains of leaf " its width of blade is smaller further away from axis ", the connection ring that it is set up effectively is shared blade pressure, is made
It can have bigger overall front face area, even if reducing rotating speed can cause that fan static pressure is reduced, but enhanced dynamic pressure is effectively more
Hydrostatic pressures losses are mended, reduction of speed noise reduction has been realized while original operating efficiency is kept so as to reach.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described.Obviously, described accompanying drawing is a part of embodiment of the invention, rather than whole implementations
Example, those skilled in the art on the premise of not paying creative work, can also obtain other designs according to these accompanying drawings
Scheme and accompanying drawing.
Fig. 1 is the top view of the fan leaf annular multistage blade structure；
Fig. 2 is the side view of the fan leaf annular multistage blade structure；
Fig. 3 is the three-dimensional view of the fan leaf annular multistage blade structure.
Specific embodiment
The technique effect of design of the invention, concrete structure and generation is carried out clearly below with reference to embodiment and accompanying drawing
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/annexations, not singly refer to that component directly connects, and refer to that can be added deduct by adding according to specific implementation situation
Lack couple auxiliary to constitute more excellent draw bail.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Embodiment 1
As shown in Figures 1 to 3, a kind of fan leaf annular multistage blade structure, including the grade blade group of flabellum axle center 1 and three, it is described
Blade group is respectively primary blades group, secondary blades group and exhaust stage blade group from inside to outside, and each blade group includes multi-disc around fan
The blade 2 that the rachis heart 1 is set, is provided with connection ring 3 between adjacent two grade blades group, the blade 2 in same grade blade group arrives flabellum
The distance in axle center 1 is equal.Blade 2 in same blade group has identical established angle, and the established angle is acute angle, primary blades
The established angle of group is more than the established angle of secondary blades group, the established angle of the established angle more than exhaust stage blade group of secondary blades group, institute
State to be flexibly connected between blade 2 and the connection ring 3 of flabellum axle center 1/, its established angle is fixed by locking member.Due to cooling tower wind
The working environment of machine is different, so the established angle of each blade group is adjustable design, it is specific only to meet above-mentioned size pass
System.Near the axis projection of the axial projective area less than the blade group away from flabellum axle center 1 of the blade group in flabellum axle center 1
Area, the ratio of the axial projective area of primary blades group, secondary blades group and exhaust stage blade group is 1：1.5：3.5.
Embodiment 2
Conventional fan flabellum is as follows with the fan leaf of the present invention annular multistage blade structure table of comparisons：
The table of comparisons
Better embodiment of the invention is illustrated above, but the invention is not limited to the embodiment,
Those of ordinary skill in the art can also make a variety of equivalent modifications or replacements on the premise of without prejudice to spirit of the invention, this
A little equivalent modifications or replacement are all contained in the application claim limited range.
Claims (2)
1. a kind of fan leaf annular multistage blade structure, it is characterised in that：Including flabellum axle center（1）At least two grade blades
Group, the blade group includes multi-disc around flabellum axle center（1）The blade of setting（2）, connection is provided between adjacent two grade blades group
Ring（3）, the blade in same grade blade group（2）To flabellum axle center（1）Distance it is equal, the blade in same blade group（2）Tool
There is identical established angle, the established angle is acute angle, near flabellum axle center（1）Blade group established angle be more than away from flabellum axle
The heart（1）Blade group established angle, near flabellum axle center（1）Blade group axial projective area be less than away from flabellum axle center
（1）Blade group axial projective area, the ratio of the axial projective area between adjacent two grade blades group is 1：1.1~4.
2. fan leaf according to claim 1 annular multistage blade structure, it is characterised in that：The blade（2）With fan
The rachis heart（1）/ connection ring（3）Between to be flexibly connected, its established angle fixed by locking member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044450.4A CN106762828A (en) | 2017-01-19 | 2017-01-19 | Fan leaf annular multistage blade structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044450.4A CN106762828A (en) | 2017-01-19 | 2017-01-19 | Fan leaf annular multistage blade structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762828A true CN106762828A (en) | 2017-05-31 |
Family
ID=58945042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710044450.4A Pending CN106762828A (en) | 2017-01-19 | 2017-01-19 | Fan leaf annular multistage blade structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762828A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348997U (en) * | 1986-09-17 | 1988-04-02 | ||
| US5755557A (en) * | 1995-08-03 | 1998-05-26 | Valeo Thermique Moteur | Axial flow fan |
| CN2323183Y (en) * | 1997-08-26 | 1999-06-09 | 吴凤清 | Multiblade vane |
| JP2008064011A (en) * | 2006-09-07 | 2008-03-21 | Calsonic Kansei Corp | Motor cooling structure of motor fan |
| US20100260608A1 (en) * | 2008-04-18 | 2010-10-14 | Mitsubishi Heavy Industries, Ltd. | Propeller fan |
| CN102227562A (en) * | 2009-06-28 | 2011-10-26 | 博姆达株式会社 | Axial fan |
| CN102465917A (en) * | 2010-11-05 | 2012-05-23 | 台达电子工业股份有限公司 | Fan structure |
| CN202418034U (en) * | 2011-11-28 | 2012-09-05 | 深圳兴奇宏科技有限公司 | Axial fan and blade structure thereof |
| US20130149115A1 (en) * | 2011-12-09 | 2013-06-13 | Delta Electronics, Inc. | Recirculation fan and wind-guiding device thereof |
| CN204371777U (en) * | 2014-12-29 | 2015-06-03 | 广东美的环境电器制造有限公司 | Fan blade and there is its fan |
| CN206449015U (en) * | 2017-01-19 | 2017-08-29 | 梁耀文 | Fan leaf annular multistage blade structure |
-
2017
- 2017-01-19 CN CN201710044450.4A patent/CN106762828A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348997U (en) * | 1986-09-17 | 1988-04-02 | ||
| US5755557A (en) * | 1995-08-03 | 1998-05-26 | Valeo Thermique Moteur | Axial flow fan |
| CN2323183Y (en) * | 1997-08-26 | 1999-06-09 | 吴凤清 | Multiblade vane |
| JP2008064011A (en) * | 2006-09-07 | 2008-03-21 | Calsonic Kansei Corp | Motor cooling structure of motor fan |
| US20100260608A1 (en) * | 2008-04-18 | 2010-10-14 | Mitsubishi Heavy Industries, Ltd. | Propeller fan |
| CN102227562A (en) * | 2009-06-28 | 2011-10-26 | 博姆达株式会社 | Axial fan |
| CN102465917A (en) * | 2010-11-05 | 2012-05-23 | 台达电子工业股份有限公司 | Fan structure |
| CN202418034U (en) * | 2011-11-28 | 2012-09-05 | 深圳兴奇宏科技有限公司 | Axial fan and blade structure thereof |
| US20130149115A1 (en) * | 2011-12-09 | 2013-06-13 | Delta Electronics, Inc. | Recirculation fan and wind-guiding device thereof |
| CN204371777U (en) * | 2014-12-29 | 2015-06-03 | 广东美的环境电器制造有限公司 | Fan blade and there is its fan |
| CN206449015U (en) * | 2017-01-19 | 2017-08-29 | 梁耀文 | Fan leaf annular multistage blade structure |
Non-Patent Citations (1)
| Title |
|---|
| 王海宁: "《矿井风流流动与控制》", 冶金工业出版社, pages: 218 - 219 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |