CN106285901B - A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage - Google Patents
A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage Download PDFInfo
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- CN106285901B CN106285901B CN201610977248.2A CN201610977248A CN106285901B CN 106285901 B CN106285901 B CN 106285901B CN 201610977248 A CN201610977248 A CN 201610977248A CN 106285901 B CN106285901 B CN 106285901B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The present invention relates to a kind of vehicular engine radiator fans based on the exploitation of cat owl wing plumage, the radiator fan is that radiating fan blade curved surface vertical section contour curve is applied cat owl wing plumage directrix by design of the bionical curve shape of cat owl wing plumage feature for radiating fan blade curved surface windward with low-drag coefficient, low pneumatic noise using cat owl wing plumage vertical section contour curve, radiating fan blade directrix.The blade construction is the biomimetic type structure developed based on cat owl wing plumage, low-drag coefficient, low pneumatic noise, high heat dispersion, moulding streamline, aesthetic in appearance.
Description
Technical field
It is specifically a kind of based on the imitative of cat owl wing plumage exploitation the present invention relates to a kind of vehicular engine radiator fan
The vehicular engine radiator fan of raw type low-drag coefficient, low pneumatic noise, high heat dispersion.
Background technology
Under normal circumstances, at work, only 1/3 or so burning capacity can be changed into mechanical energy to engine, remaining
Most energy will be lost in the form of thermal energy in air.It is most if not cooled down at this time to engine
Thermal energy can be absorbed by engine component, and engine component temperature is made drastically to increase.Experiments have shown that burning can make gas in cylinder
Temperature is up to 2200K~2800K (1927 DEG C~2527 DEG C), the parts being especially directly in direct contact with high-temperature gas,
If cooling down not in time, it is difficult to ensure engine work, while influencing the lubrication of engine interior, cleaning, cooling, close
The performances such as envelope, anti-corrosion, hydraulic pressure, damping, buffering can boil, scuffing of cylinder bore when serious.
Normal domestic use motorcar engine mean speed averagely turns in 1000~3500 (revs/min), sport car engine at present
Scooter is to 3500~10000 (revs/min), and the maximum speeds of F1 racing engines is up to 18000 turns per minute, WILLIAMS-DARLING Ton
F1 racing cars are more up to 20000 turns, and so big engine speed span section will lead to engine temperature change dramatically, and send out
Motivation appropriate working temperature is but at 80 DEG C~90 DEG C, it is therefore necessary to go to be quickly cooled down engine using effective mode.
Automobile mostly uses water-cooling type radiator at present, in order to improve the cooling capacity of radiator, is installed behind radiator
Radiator fan forced ventilation.Traditional radiator fans are moved by crankshaft straight tape splicing, the fan meeting when engine rotation
And then turn always, cannot change regarding engine temperature and change.In order to adjust the cooling Power of radiator, to load onto on a heat sink
Venetian blinds is to control wind-force entrance.Modern Car generally uses magnetic fan coupling or electronic fan, works as water
Clutch is detached with shaft when temperature is relatively low, and fan is motionless；Powered on by temperature sensor when water temperature is relatively high, makes clutch
Device is engaged with shaft, fan rotation.Equally, electronic fan is directly driven by motor, by temperature sensor control motor fortune
Turn.The radiator electric fan operating of both forms is actually all controlled by temperature sensor.But in automobile, high speed is transported for a long time
Radiating mode more than when row has been unable to meet driving demand, when one section of long-distance driving after automobile must be stopped to roadside,
It opens bonnet to radiate, though this mode is effective, efficiency is low, safety is poor.Based on this, the present invention proposes that one kind is based on
The biomimetic type low-drag coefficient of cat owl wing plumage, the vehicle radiator fan of low pneumatic noise, high heat dispersion, in conjunction with heat dissipation
Device alleviate jointly the intake efficiency that is generated by engine overheat reduces, engine power declines, early combustion and detonation, movement parts just
Normal gap is destroyed, moves the problems such as retardance, abrasion aggravation, part machinery reduced performance, further extends engine life.
Studies have shown that automobile its main resistance when running at high speed is air drag.When automobile is with the speed row of 80km/h
When sailing, the power of engine 60% is used for overcoming windage；When automobile with the speed of 150km/h when driving, windage be roll resistance
2-3 times of power, it may be said that the aerodynamic performance of an automobile directly affects its dynamic property, fuel economy.In recent years with
It aerodynamic continuous development, required for automobile engine air inlet system and exhaust system, cooling system, ventilation of body system etc. and produces
The optimization problem that raw air stream flows through resistance caused by vehicle body (interior circulation resistance) also gradually attracts people's attention.
Studies have shown that interior circulation resistance accounts for about the 12% of vehicle air drag, traditional venetian blind type radiator fan, sheet type radiation air
Fan is only capable of meeting the basic heat sinking function of vehicle, does not have the function of reducing circulation resistance in automobile.Nature biotechnology passes through hundred million
Evolution in 10000 years has good adaptive capacity to environment, this provides inspiration for the innovation and creation of the mankind.The present invention is basic herein
Upper to find that cat owl passes through prolonged biological evolution by prolonged research, certain geometry is presented when circling in the air for wing plumage
Shape (Fig. 1), have good air conducting, noise reduction except shake, reducing adhesion resistance etc. characteristics, these characteristics are especially suitable for engine
Radiator fan.The present invention on this basis by least square fitting go out cat owl wing plumage vertical section outer profile curvilinear equation with
Directrix equation (cross section outer profile curvilinear equation, similarly hereinafter) and the design for being applied to engine cooling fan, are thus developed
Biomimetic type radiator fan, can effectively reduce circulation resistance in automobile, promote dynamic property, the fuel economy of automobile.
Invention content
The purpose of the invention is to optimize existing vehicular engine radiating fan blade curved-surface structure, further improve vapour
Vehicle fuel economy provides a kind of vehicular engine radiator fan developed based on cat owl wing plumage, which is to be based on
The biomimetic type structure of cat owl wing plumage exploitation, low-drag coefficient, low pneumatic noise, high heat dispersion, moulding streamline, external form
It is beautiful.
The object of the present invention is achieved like this：A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage,
The radiator fan is by the bionical curve shape of cat owl wing plumage feature with low-drag coefficient, low pneumatic noise for dissipating
Radiating fan blade curved surface vertical section contour curve is applied cat owl wing plumage vertical section by the design of hot wind fan leaf curved surface windward
Using cat owl wing plumage directrix, specific manufacturing method is for contour curve, radiating fan blade directrix：
(1), the vertical section outer profile curve and directrix of single cat owl wing plumage are drawn on graph paper, it will be on graph paper
Curve fits vertical section outer profile curvilinear equation (formula 1-1) and the directrix side of cat owl wing plumage after Least Square in Processing
Journey (formula 1-2)
(2), the vertical section outer profile curvilinear equation and directrix equation of single cat owl wing plumage are imported into SolidWorks, and
With high-speed camera record cat owl wing plumage feature carry out comparison optimization, it is ensured that cat owl wing plumage vertical section outer profile curve with
The fitting precision of directrix, the fitting number are three times.
(3), cylinder O is drawn in SolidWorks, wherein cylinder exradius is 60mm, inner circle radius 50mm, thickness
Degree is 10mm, and cylinder seamed edge is fillet processing, radius of corner 2mm；Triangle reinforcing rib is drawn in cylindrical inside, reinforcing rib is
The equilateral triangle of stable structure, muscle thickness are 5mm, and fillet processing, radius 1mm are to reinforcing rib seamed edge；It is painted along cylinder outer rim
Single radiating fan blade is made, blade construction is bent by the vertical section outer profile of cat owl wing plumage from blade tip to blade root direction in blade
Line equation is drawn, and is drawn from side to another side direction by cat owl wing plumage directrix equation in vane clockwise, tool
The method for drafting of body is that blade inlet edge a little a little arrives blade lower edge to the curve that trailing edge respective point is formed along blade upper limb
The curved scanning that respective point is formed obtains initial bionic blade, vane thickness 1mm；To further decrease coefficient of air resistance
And the initial blade of drafting is reversed 20 degree from overlook direction, later to blade edge by aerodynamic noise, heat radiation performance clockwise
The adjacent part of edge and blade tip is fillet processing, radius of corner 15mm, and is done to the adjacent part of trailing edge and blade tip
Fillet processing, radius of corner 5mm；Blade outer rim surrounding is also excessive with fillet, radius of corner 0.25mm；Individual blade is drawn
Along cylinder O outer rims, angularly array goes out remaining seven blade in a manner of permutation and combination after the completion, obtains final biomimetic type hair
Motivation radiator fan.
It advantages of the present invention and has the technical effect that：
(1), the present invention relates to a kind of low interior circulation resistance of biomimetic type, the vehicular engine radiator fan of high heat dispersion,
Its spoon of blade exactly likes cat owl wing plumage.The present invention has abandoned traditional venetian blind type radiator fan, sheet type radiator fan
Design.Bionic blade based on this exploitation has low-drag coefficient, low pneumatic noise, high heat dispersion, moulding streamline, outer
The advantage of type beauty.
(2), engine radiating blade of the present invention uses Bionic Design theory.There to be low-drag system
Design of the cat owl wing plumage for radiator shutter curved surface windward of number, low pneumatic noise, wherein take turns in radiator shutter curved surface vertical section
Wide curve applies cat owl wing plumage vertical section contour curve, radiator shutter directrix to apply cat owl wing plumage directrix.Radiator shutter is bent
Face vertical section contour curve equation is shown in formula 1-1,1-2 with directrix equation, and curve and form for curvature are as shown in figs. 34.
(3), biomimetic type radiator shutter of the present invention vertical section outer profile curve and directrix have variable curvature characteristic,
The presentation of central fore-and-aft vertical plane outer profile curvature of curve first increases to become smaller afterwards, then increased variation tendency, and the presentation of directrix curvature tapers into
Variation tendency.
(4), blade is angularly distributed along cylinder O, and cylinder exradius is 60, inner circle radius 50, thickness 10, cylinder
Seamed edge does fillet processing, radius of corner 2；Triangle reinforcing rib is drawn in cylindrical inside, reinforcing rib is equilateral the three of stabilization
Angular structure, muscle thickness are 5, and fillet processing, radius 1 are done to reinforcing rib seamed edge；Single radiation air flabellum is drawn along cylinder outer rim
Piece, blade construction are drawn in blade from blade tip to blade root direction by the vertical section outer profile curvilinear equation of cat owl wing plumage,
It is drawn from side to another side direction by cat owl wing plumage directrix equation in vane clockwise, specific method for drafting is leaf
The curve that piece leading edge is a little a little formed to blade lower edge respective point to the curve that trailing edge respective point is formed along blade upper limb
Scanning obtains initial bionic blade, vane thickness 1mm；To further decrease coefficient of air resistance and aerodynamic noise, promoted
The initial blade of drafting is reversed 20 degree from overlook direction, later to the adjoining of blade edge and blade tip by heat dissipation performance clockwise
Fillet processing, radius of corner 15mm are in part, and do fillet processing, fillet half to the adjacent part of trailing edge and blade tip
Diameter is 5mm；Blade outer rim surrounding is also excessive with fillet, radius of corner 0.25mm；Individual blade complete after along cylinder (O)
Angularly array goes out remaining seven blade to outer rim in a manner of permutation and combination.
(5), biomimetic type blade body is formed by curved scanning, and wherein contour line is cat owl wing plumage directrix, path curve
For cat owl wing plumage vertical section outer profile curve.Curved scanning have curved surface optimization, contour completion, simple in structure, moulding streamline,
Advantage aesthetic in appearance, air resistance coefficient is small, air conducting is good.
(6), seamed edge carries out fillet processing on radiator fan, and the purpose is to further decrease interior circulation resistance.
(7), carbon fibre material can be used in radiating fan shell.It is replaced with carbon fiber enhancement resin base composite material traditional
Radiating fan shell can effectively reduce vehicle body total quality, make to further decrease automobile wind make an uproar, increase automobile fuel ecomomy at
It is possible.Radiating fan blade thickness, length-width ratio, angle parameter, windward angle, cut angle constant under the premise of, fibrous layer from
Laying angular arrangements under are [90/45/0] (Fig. 5), wherein 0 degree of direction is that blade is lateral.Select such ply stacking-sequence
Purpose is mainly that bending stiffness when considering radiating fan shell heat dissipation, torsion stiffness, wind are made an uproar coefficient, Modal Performances etc..
(8), bio-based materials also can be used in radiating fan shell material, hemp, sisal hemp, jute, palm fibre in plant fiber
It is extraordinary reinforcing material to put leaf and bamboo fibre etc., they are combined with degradable basis material, and be made can be degradable
" Green Composites ".Traditional back-mirror housing material is replaced with bio-based materials, can make automobile more green, environmental protection,
Biology base raw material can derive from the plant fibers such as fruit, soya bean, sugarcane, sweet potato, corn, bamboo, flax of plant.
(9), 3D printing technique can be used in radiating fan shell.
(10), radiating fan shell according to the present invention can be as needed to cat owl wing plumage vertical section outer profile curve
It stretched, rotated, deformed, reversed with directrix, to design various sizes of bionical radiator fan, meet different automobile types
It needs.
(11), the present invention is biomimetic type radiator fan, and shear flow that can be more smooth, sound insulation, noise reduction are more preferable, carry
Rise vehicle NVH performances.
(12), when radiator fan meets certain size, microstructure form can be used in blade interior, and specific way is
Inside is designed to the structures such as honeycomb.
(13), bionic blade according to the present invention can be additionally used in household electrical appliance, wheel in addition to for engine cooling fan
Hub motor, wind-driven generator etc..
Description of the drawings
Fig. 1 is cat owl wing plumage figure；
Fig. 2 is the biomimetic type engine radiating blade of the present invention；
Fig. 3 is the cat owl wing plumage vertical section outer profile directrix and its Curvature varying tendency chart of the present invention；
Fig. 4 is the cat owl wing plumage cross section outer profile directrix and its Curvature varying tendency chart of the present invention；
Fig. 5 is the laying angle conceptual scheme of three layers of fibrous layer of bionic blade of the present invention from top to bottom；
Fig. 6 is the complete cooling fan structure figure of the present invention.
Specific implementation mode
It is as follows that the present invention relates to specific embodiments：
A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage, which is will have
There is the bionical curve shape of cat owl wing plumage feature of low-drag coefficient, low pneumatic noise bent windward for radiating fan blade
Radiating fan blade curved surface vertical section contour curve is applied cat owl wing plumage vertical section contour curve, radiation air by the design in face
Fan leaf directrix applies cat owl wing plumage directrix, and specific manufacturing method is：
(1), the vertical section outer profile curve and directrix of single cat owl wing plumage are drawn on graph paper, it will be on graph paper
Curve fits the vertical section outer profile curve (formula 1-1) and directrix equation of cat owl wing plumage after Least Square in Processing
(formula 1-2)
(2), the cat owl wing plumage vertical section outer profile curve and directrix equation that fit are imported in SolidWorks simultaneously
With high-speed camera record cat owl wing plumage feature carry out comparison optimization, it is ensured that cat owl wing plumage vertical section outer profile curve with
The fitting precision of directrix, the fitting number are three times.
(3), cylinder O is drawn in SolidWorks, wherein cylinder exradius is 60mm, inner circle radius 50mm, thickness
Degree is 10mm, and cylinder seamed edge is fillet processing, radius of corner 2mm；Triangle reinforcing rib is drawn in cylindrical inside, reinforcing rib is
The equilateral triangle of stable structure, muscle thickness are 5mm, and fillet processing, radius 1mm are to reinforcing rib seamed edge；It is painted along cylinder O outer rims
Single radiating fan blade is made, blade construction is bent by the vertical section outer profile of cat owl wing plumage from blade tip to blade root direction in blade
Line equation is drawn, and is drawn from side to another side direction by cat owl wing plumage directrix equation in vane clockwise, tool
The method for drafting of body is that blade inlet edge a little a little arrives blade lower edge to the curve that trailing edge respective point is formed along blade upper limb
The curved scanning that respective point is formed obtains initial bionic blade, and vane thickness is 1mm (Fig. 2).To further decrease air resistance
The initial blade of drafting is reversed 20 degree from overlook direction by force coefficient and aerodynamic noise, heat radiation performance clockwise, right later
The adjacent part of blade edge and blade tip does fillet processing, radius of corner 15mm, and the adjoining to trailing edge and blade tip
It is fillet processing, radius of corner 5mm in part；Blade outer rim surrounding is also excessive with fillet, radius of corner 0.25mm.Single leaf
Along cylinder O outer rims, angularly array goes out remaining seven blade in a manner of permutation and combination after piece is completed, and obtains final imitate
Raw h type engine h radiator fan.
Claims (1)
1. a kind of manufacturing method of the vehicular engine radiator fan based on the exploitation of cat owl wing plumage, it is characterised in that：The heat dissipation
Fan is will to be used for radiator fan with the bionical curve shape of cat owl wing plumage feature of low-drag coefficient, low pneumatic noise
The design of blade curved surface windward, radiating fan blade curved surface vertical section contour curve is bent using cat owl wing plumage vertical profile facial contour
Using cat owl wing plumage directrix, specific manufacturing method is for line, radiating fan blade directrix：
(1), the vertical section outer profile curve and directrix of single cat owl wing plumage are drawn on graph paper, by graph paper upper curve
The vertical section outer profile curvilinear equation (1-1) and directrix equation (1- of cat owl wing plumage are fitted after Least Square in Processing
2)
The vertical section outer profile curvilinear equation (1-1) of cat owl wing plumage and directrix equation (1-2) are parametric equation, wherein t is
Parameter, is equivalent to the independent variable of corresponding equation, and x, y are respectively the abscissa and ordinate of corresponding equation；
(2), by the vertical section outer profile curvilinear equation and directrix equation of single cat owl wing plumage import SolidWorks, and with height
The cat owl wing plumage feature of fast camera record carries out comparison optimization, it is ensured that cat owl wing plumage vertical section outer profile curve and directrix
Fitting precision, the fitting number be three times；
(3), cylinder (O) is drawn in SolidWorks, wherein cylinder exradius is 60mm, inner circle radius 50mm, thickness
For 10mm, cylinder seamed edge is fillet processing, radius of corner 2mm；Triangle reinforcing rib is drawn in cylindrical inside, reinforcing rib is knot
The equilateral triangle that structure is stablized, muscle thickness are 5mm, and fillet processing, radius 1mm are to reinforcing rib seamed edge；It is drawn along cylinder outer rim
Single radiating fan blade, blade construction is in blade from blade tip to blade root direction by the vertical section outer profile curve of cat owl wing plumage
Equation is drawn, and is drawn from side to another side direction by cat owl wing plumage directrix equation in vane clockwise, specifically
Method for drafting be blade inlet edge a little to trailing edge respective point formed curve along blade upper limb a little arrive blade lower edge phase
The curved scanning that formation should be put obtains initial bionic blade, vane thickness 1mm；For further decrease coefficient of air resistance and
The initial blade of drafting is reversed 20 degree from overlook direction, later to blade edge by aerodynamic noise, heat radiation performance clockwise
It is fillet processing, radius of corner 15mm with the adjacent part of blade tip, and circle is done to the adjacent part of trailing edge and blade tip
Angle is handled, radius of corner 5mm；Blade outer rim surrounding also uses round-corner transition, radius of corner 0.25mm；Individual blade has been drawn
At it is rear along cylinder (O) outer rim in a manner of permutation and combination angularly array goes out remaining seven blade, obtain final biomimetic type hair
Motivation radiator fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977248.2A CN106285901B (en) | 2016-11-08 | 2016-11-08 | A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977248.2A CN106285901B (en) | 2016-11-08 | 2016-11-08 | A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage |
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| Publication Number | Publication Date |
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| CN106285901A CN106285901A (en) | 2017-01-04 |
| CN106285901B true CN106285901B (en) | 2018-10-16 |
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| CN106815435B (en) * | 2017-01-18 | 2020-02-18 | 吉林大学 | Manufacturing method of bionic automobile tail fin shell |
| CN112306204B (en) * | 2020-11-30 | 2023-08-18 | 联想(北京)有限公司 | Heat dissipation module and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2132008Y (en) * | 1992-08-29 | 1993-05-05 | 江西汽车风扇厂 | High efficiency fan vane for car |
| CN1710290A (en) * | 2005-07-12 | 2005-12-21 | 吉林大学 | Low noise fan blade |
| CN201246330Y (en) * | 2008-07-19 | 2009-05-27 | 刘景斌 | Bionic type centrifugal pump |
| US7980077B2 (en) * | 2009-05-29 | 2011-07-19 | General Electric Company | Cooling system kit, method to retrofit, and method to operate a turbocharged engine system |
| CN201461226U (en) * | 2009-08-05 | 2010-05-12 | 中国科学院工程热物理研究所 | Vane |
| CN102251986A (en) * | 2011-08-26 | 2011-11-23 | 吉林大学 | Bionic centrifugal fan blade and impeller |
| CN204984942U (en) * | 2015-06-23 | 2016-01-20 | 浙江工业大学 | Centrifugal pump of making an uproar falls in damping with biomimetic structure |
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Granted publication date: 20181016 Termination date: 20191108 |