CN107704665A - Vehicle-mounted fan design method - Google Patents
Vehicle-mounted fan design method Download PDFInfo
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- CN107704665A CN107704665A CN201710836494.0A CN201710836494A CN107704665A CN 107704665 A CN107704665 A CN 107704665A CN 201710836494 A CN201710836494 A CN 201710836494A CN 107704665 A CN107704665 A CN 107704665A
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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
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/06—Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/10—Noise analysis or noise optimisation
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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
A kind of vehicle-mounted fan design method, this method comprise the following steps：Establish fan basis threedimensional model；Fan basis threedimensional model is analyzed, determines the particular location of noise source on fan；The parameters of electric fan are selected according to the particular location of noise source；On the threedimensional model of fan basis, establish fan according to the parameters after selection and improve threedimensional model；Threedimensional model is improved to the fan to analyze, whether the noiseproof feature that checking fan improves threedimensional model meets design needs；Threedimensional model is improved according to the fan and makes entity sample, and verifies whether the noiseproof feature of the entity sample meets design needs；And the parameters that output is selected.This method can carry out exploitation design to electric fan on the whole, can significantly increase the anti-acoustic capability of fan, shorten the test period, reduce experimentation cost.
Description
Technical field
The present invention relates to vehicle component development field, especially a kind of vehicle-mounted fan design method.
Background technology
With the improvement of living standards, vehicle is increasingly being applied among the life of people, people to vehicle performance,
The requirement also more and more higher of comfort property when especially driving.During the use of vehicle, noise problem is to influence to drive
Comfortableness it is main the problem of one of, fan is the Main Noise Sources of vehicle interior.
The noise of fan mainly includes two aspects：Aerodynamic noise and mechanical noise, flowed when starting noise in fan work
Caused by the interaction of the parts such as body and fan blade, air channel and rectifier, mainly including rotational noise, impact noise and whirlpool
Flow noise etc..Energy communication elements of the fan blade as fan, its startability directly affect the operating efficiency of fan, fortune
Row life-span and the size for producing noise.
To obtain the fan of preferable performance, the flabellum of fan and composition fan must be just designed.
The exploitation design of fan needs to consider aerofoil profile (section shape of flabellum), blade angle and the axle of flabellum
To multiple parameters such as profiles, in the prior art, the production firm of fan does not have clear and definite fan exploitation design method, is developing
In be merely able to first select the aerofoil profile of flabellum, then it is determined that air quantity index and noiseproof feature etc. are required again after aerofoil profile into
Row improves.In exploitation designs, each production firm can only independently find existing more outstanding electric fan, and according to flabellum point
The aerofoil profile of the flabellum is analysed, then multiple outstanding aerofoil profiles are made to the wing storehouse of oneself, when developing new fan, according to fan
Energy index finds existing aerofoil profile in the fan airfoil storehouse having built up, and after air quantity index is met, then carries out fan noise
Test, if now can not just find new aerofoil profile in wing storehouse again by wind quantity test or noise testing, again
Tested.
The electric fan of the method exploitation design, is the selection on the basis of existing aerofoil profile, can only be one by one right
The parameters of flabellum are optimized, and so as to seek a relatively good result, the overall structure of flabellum can not be innovated；
This method can only be that flabellum is optimized, it is impossible to make larger lifting to the anti-acoustic capability of fan.In addition, the exploitation designs
Method needs largely to be tested, and the test period is longer.
The content of the invention
It is an object of the invention to provide a kind of vehicle-mounted fan design method, this method can be on the whole to electric fan
Exploitation design is carried out, the anti-acoustic capability of fan can be significantly increased, shortens the test period, reduces experimentation cost.
The present invention provides a kind of vehicle-mounted fan design method, and this method comprises the following steps：
S1：Establish fan basis threedimensional model；
S2：Fan basis threedimensional model is analyzed, determines the particular location of noise source on fan；
S3 is selected the parameters of electric fan according to the particular location of noise source；
S4：On the threedimensional model of fan basis, establish fan according to the parameters after selection and improve threedimensional model；
S5：Threedimensional model is improved to the fan to analyze, whether the noiseproof feature of checking fan improvement threedimensional model
Meet design needs, if meeting design needs, into S6, if design needs are not met, into S3 again to electric fan
Parameters selected；
S6：Threedimensional model is improved according to the fan and makes entity sample, and verifies the noiseproof feature of the entity sample
Whether design needs are met, if meeting design needs, into S7, if design needs are not met, into S3 again to fan
The parameters of flabellum are selected；
S7：The selected parameters of output.
Further, analyzed to fan basis threedimensional model, determine the particular location of noise source on fan
When, also comprise the following steps：
On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；
By Fluid Mechanics Computation, the streamline distribution figure in each section on fan is made；
The position of flow shedding flabellum is found out according to the streamline distribution figure, draws the position of noise source on fan.
Further, analyzed to fan basis threedimensional model, determine the particular location of noise source on fan
When, also comprise the following steps：
On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；
The static pressure cloud distribution map in each section on fan is made according to Fluid Mechanics Computation；
According to the static pressure cloud distribution map, the position of pressure jump point is found out, draws the position of noise source on fan.
Further, analyzed to fan basis threedimensional model, determine the particular location of noise source on fan
When, also comprise the following steps：
On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；
The Velocity Profiles figure in each section on fan is made according to Fluid Mechanics Computation；
According to the Velocity Profiles figure, the position of air velocity catastrophe point is found out, draws the position of noise source on fan
Put.
Further, analyzed to fan basis threedimensional model, determine the particular location of noise source on fan
When, also comprise the following steps：
On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；
The tubulence energy intensity distribution in each section on fan is made according to Fluid Mechanics Computation；
According to the tubulence energy intensity distribution, the position of turbulence intensity catastrophe point is found out, draws noise source on fan
Position.
Further, when establishing fan basis threedimensional model, it need to arrange that border, air quantity, static pressure, flabellum are straight according to fan
One or more of parameters in footpath, motor diameter and the requirement of fan aft gap determine that initial blade profile established angle scope, blade are thick
Spend scope, root of blade trailing edge original position and aerofoil profile trailing edge angle.
Further, the parameters of the electric fan include axial profile parameter, flabellum aerofoil profile and the fan of flabellum
The installation angular dimensions of leaf.
Further, in the S5 steps, when analyzing fan improvement threedimensional model, after need to verifying that fan improves
The blade profile section Flow Field Distribution of threedimensional model, checking fan vane type sectional pressure distribution, calculates sound pressure level caused by blade surface
With the acoustical power of the resulting per unit volume of turbulent flow on fan outlet section and/or carry out broadband noise analysis, with judge
Whether noiseproof feature meets design needs.
Further, when whether the noiseproof feature for verifying the entity sample meets design needs, in addition to by making an uproar
Source Spectrum analyzer, the frequency that analysis fan noise is primarily present, show that fan produces the main frequency of noise source, Yi Jitong
The noise position that acoustics camera apparatus measures fan is crossed, locks noise source.
In summary, in the present invention, require to establish fan basis threedimensional model, Yu Jian according to the overall of fan first
In vertical fan basis threedimensional model, first flabellum aerofoil profile is not chosen, but the overall multiple fan parameters of consideration, therefore, wind
A variety of design requirements can be met in advance when establishing by fanning basic threedimensional model, avoided and first selected flabellum aerofoil profile to subsequent parameter
The limitation of selection, meets design requirement most possibly；Secondly, by analyzing the position of noise source on fan, clearly require and change
The direction entered, reduce the test procedure of a large amount of repeatability, the anti-acoustic capability of fan can be significantly improved, shorten the test period；
Finally, verified by three-dimensional digital-to-analogue and entity sample is verified, the actual performance of multiple authentication fan, wind can be examined exactly
The design effect of fan, and guide direction for the improvement of fan.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 is the step block diagram of vehicle-mounted fan design method provided by the invention.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, it is as follows that the present invention is described in detail.
It is an object of the invention to provide a kind of vehicle-mounted fan design method, this method can be on the whole to electric fan
Exploitation design is carried out, the anti-acoustic capability of fan can be significantly increased, shortens the test period, reduces experimentation cost.
Fig. 1 is the step block diagram of vehicle-mounted fan design method provided by the invention, as shown in figure 1, this method is including as follows
Step：
S1：Establish fan basis threedimensional model；
S2：Fan basis threedimensional model is analyzed, determines the particular location of noise source on fan；
S3：The parameters of electric fan are selected according to the particular location of noise source；
S4：On the threedimensional model of fan basis, establish fan according to the parameters after selection and improve threedimensional model；
S5：Threedimensional model is improved to fan to analyze, whether the noiseproof feature that checking fan improves threedimensional model meets
Design is needed, if meeting design needs, carries out S6, and S3 is entered if not meeting design and needing again to the items of electric fan
Parameter is selected；
S6：Threedimensional model is improved according to fan and makes entity sample, and the entity sample is verified, verifies entity sample
Whether the noiseproof feature of product meets design needs, if meeting design needs, carries out S7, if not meeting design needs, enters
S3 is selected the parameters of electric fan again；
S7：The selected parameters of output, complete vehicle-mounted fan design.
Specifically, in S1, border, air quantity, static pressure, flabellum diameter, motor diameter and fan can be arranged according to fan
One or more in the parameters such as aft gap requirement determine initial blade profile established angle scope, vane thickness scope, root of blade
Trailing edge original position and aerofoil profile trailing edge angle are to establish fan basis threedimensional model, due to establishing fan basis threedimensional model
In, first flabellum aerofoil profile is not chosen, but the overall multiple fan parameters of consideration, Holistic modeling is carried out to flabellum.Therefore, wind
A variety of design requirements can be met in advance when establishing by fanning basic threedimensional model, avoided and first selected flabellum aerofoil profile to subsequent parameter
The limitation of selection, meets design requirement most possibly.
In S2, determine that the position of noise source comprises the following steps on fan：
Using fan center as the center of circle on the windward side of fan, the circular ring section of different radii is intercepted successively；
Fan is divided by computational fluid dynamics (Computational Fluid Dynamics abbreviation CFD)
Analysis, make streamline distribution figure, static pressure cloud distribution map, tubulence energy intensity distribution and/or the windward side air velocity point in each section
Butut；
Analyzed according to above-mentioned distribution map, find out the position of noise source on fan.
Specifically, when flow line distribution map is analyzed, the position of flow shedding flabellum is found out, the position is fan
The position of upper noise source；
When analyzing static pressure cloud distribution map, the position of pressure jump point is found out, the position is noise on fan
The position in source；
When analyzing tubulence energy intensity distribution, the position of turbulence intensity catastrophe point is found out, the position is wind
The position of noise source on fan；
When analyzing windward side Velocity Profiles figure, the position of air velocity catastrophe point is found out, the position is
For the position of noise source on fan.
In S5, fan is improved when threedimensional model is analyzed, it is necessary to verify the blade profile of threedimensional model after fan improvement
Section Flow Field Distribution, confirm eddy region flow field improvement, while verify that fan vane type sectional pressure is distributed, confirm that whirlpool departs from
Phenomenon improvement, calculate the resulting per unit volume of turbulent flow on sound pressure level caused by blade surface and fan outlet section
Acoustical power and/or carry out broadband noise analysis.And then judge whether noiseproof feature meets design needs, if meeting design needs
Will, then S6 is carried out, the parameters of electric fan are selected again into S3 if not meeting design and needing
In the present invention, the parameters of electric fan include axial profile parameter, flabellum aerofoil profile and the flabellum of flabellum
Installation angular dimensions.
When whether the noiseproof feature for verifying entity sample meets design needs, in addition to pass through noise source spectrum analysis
Instrument, the frequency that analysis fan noise is primarily present, show that fan produces the main frequency of noise source, and set by acoustics camera
The standby noise position for measuring fan, locks noise source, is when the detection of entity sample is undesirable, according to the main of noise source
The particular location of frequency and noise source, suitable parameter is selected into S3 steps herein, fan is further optimized.
In the present invention, require to establish fan basis threedimensional model according to the overall of fan first, in establishing fan base
In plinth threedimensional model, first flabellum aerofoil profile is not chosen, but the overall multiple fan parameters of consideration, therefore, fan basis three
Dimension module can meet a variety of design requirements in advance when establishing, and avoid and first select the limit that flabellum aerofoil profile is chosen to subsequent parameter
System, meets design requirement most possibly；Secondly, by analyzing the position of noise source on fan, improved direction is clearly required,
Reduce the test procedure of a large amount of repeatability, the anti-acoustic capability of fan can be significantly improved, shorten the test period；Finally, pass through
Three-dimensional digital-to-analogue checking and the checking of entity sample, the actual performance of multiple authentication fan, can examine the design of fan exactly
Effect, and guide direction for the improvement of fan.
In summary, vehicle-mounted fan design method provided by the invention, can be developed to electric fan on the whole
Design, the anti-acoustic capability of fan can be significantly increased, shorten the test period, reduce experimentation cost.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the technical spirit pair according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (9)
- A kind of 1. vehicle-mounted fan design method, it is characterised in that：This method comprises the following steps：S1：Establish fan basis threedimensional model；S2：Fan basis threedimensional model is analyzed, determines the particular location of noise source on fan；S3 is selected the parameters of electric fan according to the particular location of noise source；S4：On the threedimensional model of fan basis, establish fan according to the parameters after selection and improve threedimensional model；S5：Threedimensional model is improved to the fan to analyze, whether the noiseproof feature that checking fan improves threedimensional model meets Design needs, if meeting design needs, into S6, if design needs are not met, into S3 again to each of electric fan Item parameter is selected；S6：According to the fan improve threedimensional model make entity sample, and verify the entity sample noiseproof feature whether Meet design needs, if meeting design needs, into S7, if design needs are not met, into S3 again to electric fan Parameters selected；S7：The selected parameters of output.
- 2. vehicle-mounted fan design method according to claim 1, it is characterised in that：To fan basis threedimensional model Analyzed, when determining the particular location of noise source on fan, also comprised the following steps：On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；By Fluid Mechanics Computation, the streamline distribution figure in each section on fan is made；The position of flow shedding flabellum is found out according to the streamline distribution figure, draws the position of noise source on fan.
- 3. vehicle-mounted fan design method according to claim 1, it is characterised in that：To fan basis threedimensional model Analyzed, when determining the particular location of noise source on fan, also comprised the following steps：On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；The static pressure cloud distribution map in each section on fan is made according to Fluid Mechanics Computation；According to the static pressure cloud distribution map, the position of pressure jump point is found out, draws the position of noise source on fan.
- 4. vehicle-mounted fan design method according to claim 1, it is characterised in that：To fan basis threedimensional model Analyzed, when determining the particular location of noise source on fan, also comprised the following steps：On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；The Velocity Profiles figure in each section on fan is made according to Fluid Mechanics Computation；According to the Velocity Profiles figure, the position of air velocity catastrophe point is found out, draws the position of noise source on fan.
- 5. vehicle-mounted fan design method according to claim 1, it is characterised in that：To fan basis threedimensional model Analyzed, when determining the particular location of noise source on fan, also comprised the following steps：On the windward side of fan, using fan center as prototype, the circular ring section of different radii is intercepted successively；The tubulence energy intensity distribution in each section on fan is made according to Fluid Mechanics Computation；According to the tubulence energy intensity distribution, the position of turbulence intensity catastrophe point is found out, draws the position of noise source on fan.
- 6. vehicle-mounted fan design method according to claim 1, it is characterised in that：Establishing fan basis threedimensional model When, need to according to fan arrange border, air quantity, static pressure, flabellum diameter, motor diameter and fan aft gap requirement in one kind or Several parameters determine initial blade profile established angle scope, vane thickness scope, root of blade trailing edge original position and aerofoil profile trailing edge Angle.
- 7. vehicle-mounted fan design method according to claim 1, it is characterised in that：The parameters bag of the electric fan Include the installation angular dimensions of the axial profile parameter of flabellum, flabellum aerofoil profile and flabellum.
- 8. vehicle-mounted fan design method according to claim 1, it is characterised in that：In the S5 steps, fan is changed When entering threedimensional model and being analyzed, need to verify fan improve after threedimensional model blade profile section Flow Field Distribution, verify fan vane type Sectional pressure is distributed, and calculates the resulting per unit volume of turbulent flow on sound pressure level caused by blade surface and fan outlet section Acoustical power and/or carry out broadband noise analysis, with judge noiseproof feature whether meet design needs.
- 9. vehicle-mounted fan design method according to claim 1, it is characterised in that：Verifying the noise of the entity sample When whether performance meets design needs, in addition to pass through noise source spectrum analyzer, the frequency that analysis fan noise is primarily present, Show that fan produces the main frequency of noise source, and the noise position of fan is measured by acoustics camera apparatus, lock noise Source.
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