CN107165863A - A kind of engineering axle stream cooling plastic fan - Google Patents
A kind of engineering axle stream cooling plastic fan Download PDFInfo
- Publication number
- CN107165863A CN107165863A CN201710564611.2A CN201710564611A CN107165863A CN 107165863 A CN107165863 A CN 107165863A CN 201710564611 A CN201710564611 A CN 201710564611A CN 107165863 A CN107165863 A CN 107165863A
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- China
- Prior art keywords
- fan
- blade
- section
- line
- characteristic cross
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- 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.)
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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
- F04D29/386—Skewed blades
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a kind of engineering axle stream cooling plastic fan, it is characterised in that：Including 1 fan hub, multiple fan blade, fan blade uses the high efficiency airfoil-shape that relative thickness is not more than 1 × 105 for 3~6%, design Reynolds number；Described fan blade, including multiple characteristic cross-sections coincided, characteristic cross-section center of gravity product fall line, and its characteristic cross-section center of gravity product is fallen line and is made up of straight line plus circular arc, and the ratio that characteristic cross-section center of gravity product shared by straight length falls line is 0.4；The high efficiency airfoil-shape curve chord length of fan blade is in nonlinear Distribution by blade root to blade tip, and characteristic cross-section established angle A1~An of fan blade is progressively reduced in nonlinear Distribution by blade root to blade tip.A kind of engineering axle stream cooling plastic fan of the present invention is compared with conventional diameter identical aerofoil fan, and under identical rotation speed of the fan, noise is low, small power consumption, and good aerodynamic quality, and air quantity is big, and blast is big, and radiating effect is more preferable, with good application prospect.
Description
Technical field
The present invention relates to a kind of fan, and in particular to a kind of engineering axle stream cooling plastic fan.
Background technology
Fan is an important composition part of cooling system for construction machinery.In all fields of national economy, different type
Fan have different application, cool down, used in public opinion tunnel, mining, subway for example, being used for radiator in engineering machinery
Desk fan and ventilating fan in ventilation and daily life etc..
China Today construction machinery industry is quickly grown, and the requirement in terms of technological innovation is improved, and cooling fan is used as work
An important composition part in journey machinery cooling system, to the radiating effect of cooling system, noise, fuel economy and starts
Machine power consumption etc. has direct influence.The iron winds fan of current cooling system for construction machinery and the static pressure of axle stream plastic fan all compare
Smaller, fan is to produce based on dynamic pressure, and these aerofoil fan mechanical efficiencies are generally relatively low, it is impossible to meet high air quantity, Gao Feng
Pressure, the requirement of low noise, in the urgent need to improvement.
The content of the invention
The invention provides a kind of yardstick of blade, the engineering axle stream cooling modeling rationally designed in terms of geometry
Expect fan, it is intended to solve that existing axle stream cooling plastic air quantity of fan is small, blast is low, noise is big, the problem of power consumption is high.
The technical solution adopted by the present invention is：A kind of engineering axle stream cooling plastic fan, including 1 fan hub, fan
At least 2 fan blade are installed, the fan blade uses relative thickness little for 3~6%, design Reynolds number on wheel hub
In 1 × 105 high efficiency airfoil-shape；The fan blade, including multiple characteristic cross-sections coincided, characteristic cross-section center of gravity product are fallen
Line；The curve center of gravity of the high efficiency airfoil-shape of each characteristic cross-section is fallen line with characteristic cross-section center of gravity product and overlapped；The fan blade, leaf
The curve chord length of the high efficiency airfoil-shape of piece is in nonlinear Distribution, characteristic cross-section established angle A1~An of blade by blade root to blade tip
Progressively reduced in nonlinear Distribution by blade root to blade tip, the characteristic cross-section center of gravity product is fallen line and is made up of straight line plus circular arc, directly
The ratio that characteristic cross-section center of gravity product shared by line length falls line is 0.4, and it can be straight line or song that the characteristic cross-section center of gravity product, which falls line,
Line, characteristic cross-section center of gravity product falls line and is bent into fan direction of rotation antecurvature, and characteristic cross-section center of gravity product falls line and is aweather fanned out to wind side
To being bent into sweepforward, the angle a that line and the centroid of section product of blade tip centroid of section and blade root centroid of section falls line formation is leaf
Line and the centroid of section product of the kyphotic angle of piece, blade tip centroid of section and fan center fall the angle c of line formation for before blade
Sweep angle；The kyphotic angle a of the fan blade is 9 °, and sweepforward angle c is 5 °.
The present invention further technical scheme be：The fan blade number is 7, and fan diameter is 780mm, fan hub
A diameter of 260mm.
The present invention further technical scheme be：The characteristic cross-section number of the fan blade is 7, the characteristic cross-section
Profile molded line is made up of high efficiency airfoil-shape closed curve；The profile molded line of the characteristic cross-section is located at vertical with fan radial direction
Plane on, the distance of the plane to fan center for R1~R7 be respectively 130mm, 173.23mm, 216.58mm,
259.93mm、303.29mm、346.64mm、390mm。
The present invention further technical scheme be：Characteristic cross-section established angle A1~A7 of the fan blade is respectively
45.22°、41.39°、38.06°、35.14°、32.56°、30.27°、25.22°。
The present invention further technical scheme be：The high efficiency airfoil-shape chord length b of 7 fan blade is by blade root to blade tip
Respectively 140mm, 160mm, 175mm, 186mm, 192mm, 190mm, 180mm.
The beneficial effects of the invention are as follows：As a result of such scheme to fan blade shape, characteristic cross-section curve, torsion
Angle, streamline are reasonably designed, and are allowed to compared with conventional diameter identical aerofoil fan, under identical rotation speed of the fan, make an uproar
Sound is low, small power consumption, lightweight, and good aerodynamic quality, and air quantity is big, and radiating effect is more preferable.
Brief description of the drawings
Fig. 1 is a kind of front view of engineering axle stream cooling plastic fan of the present invention；
Fig. 2 is fan blade appearance figure of the present invention；
Fig. 3 is Fig. 2 sectional view.
Embodiment
The present invention is described further with reference to the accompanying drawings and detailed description.
As shown in Fig. 1, the present invention includes fan hub 1, fan blade 2 and constituted.The center of fan hub 1 and drive shaft
It is connected, the outside of fan hub 1 is connected with fan blade 2.
Drive shaft is set to drive fan blade 2 to be rotated by certain steering and rotating speed by fan hub 1.Fan blade 2
It is the number of the main body of fan, its yardstick and geometric shape and fan blade 2, there is conclusive effect to fan performance.To carry
High fan efficiency and reduction noise, blade 2 of the invention have following features：As shown in Fig. 2, the effective diameter of the fan is
780mm, a diameter of 260mm of fan hub, and the number of fan blade 2 is 7 leaves.Blade 2 is changed by 7 characteristic cross-sections 7
Conjunction is formed, and each characteristic cross-section contour curve to fan center apart from R1~R7 be respectively 130mm, 173.23mm,
216.58mm、259.93mm、303.29mm、346.64mm、390mm.The phase of 2 characteristic cross-section of fan blade 7 at different radii
There are different established angles for Plane of rotation,（I.e. fan blade 2 has relative torsion）, the blade tip of fan blade 2 is relative to leaf
Root reverses 17 °, and torsion angle and radius are in nonlinear change, and the blade root of fan blade 2 reverses maximum, and blade tip reverses minimum, in wind
Fan each characteristic cross-section 7 of each fan blade 2 of design point is in efficacious workaround.Each characteristic cross-section 7 of fan blade 2 is reversed
It is centrally disposed in the center of gravity of Curve of wing.
The line of center of gravity 4 of the same each characteristic cross-section 7 of fan blade 2 is curve, and referred to as characteristic cross-section center of gravity product falls line 3.
Characteristic cross-section center of gravity product is fallen line 3 and is made up of straight line plus circular arc, and characteristic cross-section center of gravity product falls the ratio of line 3 shared by straight length
For 0.4.Characteristic cross-section center of gravity product fall line 3 be bent into fan direction of rotation it is antecurvature, characteristic cross-section center of gravity product falls line 3 to fan
Air-out direction is bent into sweepforward, and line and the centroid of section product of blade tip centroid of section and blade root centroid of section fall the angle that line is formed
A is the kyphotic angle of blade, and the angle c that line and the centroid of section product of blade tip centroid of section and fan center falls line formation is leaf
The sweepforward angle of piece, the kyphotic angle 5 of the fan blade is 9 °, and sweepforward angle 6 is 5 °, to reduce the noise of fan, improves fan
Air quantity and blast, and with preferable aeroperformance.
As shown in Fig. 3, the established angle 8 of the characteristic cross-section 7 of each fan blade 2 is angle A, and angle A is by blade root to blade tip
Progressively diminish in nonlinear Distribution, the established angle 8 of 7 characteristic cross-sections 7 of fan blade 2 is respectively A1~A7：
45.22°、41.39°、38.06°、35.14°、32.56°、30.27°、25.22°.Fan blade 2 use relative thickness for 3~
6%, design Reynolds number is not more than 1 × high efficiency airfoil-shape, and with the ratio that relatively rises higher/hinder, because it has less relative thickness,
The construction weight of fan blade 2 is alleviated for this.The high efficiency airfoil-shape curve chord length b of fan blade 2 is by blade root to blade tip in non-
Linear distribution, 7 characteristic cross-section high efficiency airfoil-shape chord length b of fan blade 2 are respectively b1~b7：140mm、160mm、
175mm、186mm、192mm、190mm、180mm .Relative thickness is a known technical term, refers to the thickness of aerofoil profile and is
Length of straigh line between the aerofoil profile upper and lower surface of wing chord.
A kind of axle stream cooling plastic fan of the present invention is compared with the identical aerofoil fan of conventional diameter, in same rotational speed
Under, air quantity of fan can be effectively improved and fan noise is effectively reduced, the cooling effectiveness of cooling system is improved.Axle stream of the present invention
Cooling plastic fan cannot only be used in the cooling system of engineering machinery, and can be also used for the cooling system of other industry
System.
As can be seen from the above description, the above embodiment of the present invention realizes following technique effect：With it is in the past straight
Footpath identical aerofoil fan is compared, and under identical rotation speed of the fan, noise is low, small power consumption, and good aerodynamic quality, air quantity
Greatly, blast is big, and radiating effect is more preferable, with good application prospect.
It is prior art not have the technical characteristic described in detail in the application.Above-described embodiment only illustrative the application
Principle and its effect, not for limitation the application.Any person skilled in the art all can be in the essence without prejudice to the application
God and under the scope of, to above-described embodiment carry out modifications and changes.Therefore, those of ordinary skill in the art is not taking off
From spirit disclosed herein and all equivalent modifications completed under technological thought or change, should by the application right
It is required that being covered.
Claims (5)
1. at least 2 fans are installed in a kind of engineering axle stream cooling plastic fan, including 1 fan hub, fan hub
Blade, it is characterised in that：The fan blade uses the height that relative thickness is not more than 1 × 105 for 3~6%, design Reynolds number
Imitate aerofoil profile；The fan blade, including multiple characteristic cross-sections coincided, characteristic cross-section center of gravity product fall line；Each feature
The curve center of gravity of the high efficiency airfoil-shape in section is fallen line with characteristic cross-section center of gravity product and overlapped；The fan blade, the high efficiency airfoil-shape of blade
Curve chord length by blade root to blade tip be in nonlinear Distribution, characteristic cross-section established angle A1~An of blade is by blade root to blade tip
It is in nonlinear Distribution progressively to reduce, and the characteristic cross-section center of gravity product is fallen line and is made up of straight line plus circular arc, special shared by straight length
It is 0.4 to levy centroid of section product to fall the ratio of line, and it can be straight line or curve, characteristic cross-section that the characteristic cross-section center of gravity product, which falls line,
Center of gravity product falls line and is bent into fan direction of rotation antecurvature, and characteristic cross-section center of gravity product is fallen line and aweather fanned before air-out direction is bent into
Plunder, the angle a that line and the centroid of section product of blade tip centroid of section and blade root centroid of section falls line formation is the antecurvature of blade
The angle c that line and the centroid of section product of angle, blade tip centroid of section and fan center fall line formation is the sweepforward angle of blade；Institute
The kyphotic angle a for stating fan blade is 9 °, and sweepforward angle c is 5 °.
2. a kind of engineering axle stream cooling plastic fan according to claim 1, it is characterised in that：The fan blade number
Mesh is 7, and fan diameter is 780mm, a diameter of 260mm of fan hub.
3. a kind of engineering axle stream cooling plastic fan according to claim 2, it is characterised in that：The fan blade
Characteristic cross-section number is 7, and the profile molded line of the characteristic cross-section is made up of high efficiency airfoil-shape closed curve；The characteristic cross-section
Profile molded line is located in the plane vertical with fan radial direction, and the distance of the plane to fan center is distinguished for R1~R7
For 130mm, 173.23mm, 216.58mm, 259.93mm, 303.29mm, 346.64mm, 390mm.
4. a kind of engineering axle stream cooling plastic fan according to claim 3, it is characterised in that：The fan blade
Characteristic cross-section established angle A1~A7 is respectively 45.22 °, 41.39 °, 38.06 °, 35.14 °, 32.56 °, 30.27 °,
25.22°。
5. a kind of engineering axle stream cooling plastic fan according to claim 2 or 3 or 4, it is characterised in that：Described 7
The high efficiency airfoil-shape chord length b of piece fan blade by blade root to blade tip be respectively 140mm, 160mm, 175mm, 186mm, 192mm,
190mm、180mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564611.2A CN107165863A (en) | 2017-07-12 | 2017-07-12 | A kind of engineering axle stream cooling plastic fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564611.2A CN107165863A (en) | 2017-07-12 | 2017-07-12 | A kind of engineering axle stream cooling plastic fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107165863A true CN107165863A (en) | 2017-09-15 |
Family
ID=59823953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710564611.2A Pending CN107165863A (en) | 2017-07-12 | 2017-07-12 | A kind of engineering axle stream cooling plastic fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107165863A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528433A (en) * | 2018-05-25 | 2019-12-03 | 南京德朔实业有限公司 | Hair drier |
| CN111043063A (en) * | 2018-10-15 | 2020-04-21 | 广东美的白色家电技术创新中心有限公司 | Counter-rotating fan |
| CN113653671A (en) * | 2021-08-06 | 2021-11-16 | 佛山市南海九洲普惠风机有限公司 | Impeller and negative pressure fan |
-
2017
- 2017-07-12 CN CN201710564611.2A patent/CN107165863A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528433A (en) * | 2018-05-25 | 2019-12-03 | 南京德朔实业有限公司 | Hair drier |
| CN110528433B (en) * | 2018-05-25 | 2021-03-26 | 南京德朔实业有限公司 | Hair drier |
| CN111043063A (en) * | 2018-10-15 | 2020-04-21 | 广东美的白色家电技术创新中心有限公司 | Counter-rotating fan |
| US11506211B2 (en) | 2018-10-15 | 2022-11-22 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. | Counter-rotating fan |
| CN113653671A (en) * | 2021-08-06 | 2021-11-16 | 佛山市南海九洲普惠风机有限公司 | Impeller and negative pressure fan |
| CN113653671B (en) * | 2021-08-06 | 2024-04-05 | 佛山市南海九洲普惠风机有限公司 | Impeller and negative pressure fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |