CN106762820B - A kind of design method of prismatic blade radial fan impeller - Google Patents
A kind of design method of prismatic blade radial fan impeller Download PDFInfo
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- CN106762820B CN106762820B CN201611212113.3A CN201611212113A CN106762820B CN 106762820 B CN106762820 B CN 106762820B CN 201611212113 A CN201611212113 A CN 201611212113A CN 106762820 B CN106762820 B CN 106762820B
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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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of design methods of prismatic blade radial fan impeller, hub curve and shroud curve including 1, creation impeller；2, the datum curve and datum mark of blade are created；3, the leading edge controlling curve of middle cambered surface is built, the datum mark defined in the datum curve starting point and shroud of blade is connected by fair curve, the leading edge controlling curve of cambered surface, leading edge controlling curve is rotated a circle about the z axis in creation, creates the leading edge trimmed surface of cambered surface in blade；4, cambered surface root curve in blade is created；5, cambered surface in final blade is created；6, spoon of blade is created；7, impeller is created, this is designed as Full Parameterized Design, under a small amount of control parameter driving, the deformation in maximum magnitude can be carried out to model, blindness and uncertainty when avoiding modelling and optimization using this method, a large amount of manpower and time are directly saved, the design studies for prismatic blade radial fan impeller provide more scientific approach.
Description
Technical field
The invention belongs to blower technical field more particularly to a kind of design methods of prismatic blade radial fan impeller.
Background technique
The function of blower essentially consists in guidance air and flows and then achieve the purpose that heat dissipation, therefore, to keep radiating efficiency good
Good, blower must be good for the guidance efficiency of air, currently, the flow direction of air divides when being worked with blower, blower has
Axis stream and two kinds of radial-flow type.Radial fan is the principle that potential energy is converted to according to kinetic energy, using high-speed rotating impeller by gas
Body accelerates, and then slows down, changes flow direction, kinetic energy is made to be converted into potential energy.When motor impeller work when, gas from axial direction into
Enter impeller, gas is radially redirected when flowing through impeller, subsequently into diffuser.Since air is become in blower by axial flowing
Radial Flow, so claiming radial fan, the performance of radial fan is more embodied in the structure in impeller and air duct, so
Industry explore in also focus mostly on structure, in terms of.Important corollary equipment of the radial fan as industry, is more applied
In fields such as electric power, cement, petrochemical industry, coal, mine and environmental protection, under new economic development situation, the following radial fan
Industry will continue to keep increasing faster.
The Impeller Design of radial fan, the foundation design manual mainly used in the market, according to air quantity, wind pressure, revolving speed etc.
Demand data designs the basic blade wheel structure of a substantially meet demand by largely calculating derivation.Design obtained leaf
How take turns performance, it is also necessary to further verifying, and subsequent impeller improves, being that traditional design method is very scabrous asks
Topic, most of designing units using empirically partial modification model, but such method exist very big blindness and
Uncertainty, also likely reduce blower performance, in short, blade wheel structure design on, seriously exist at present low efficiency, at
The problems such as this is high.
Summary of the invention
The present invention, only need to be to mould in view of the shortcomings of the prior art, provide a kind of design method of prismatic blade radial fan impeller
Type creates a small amount of parameter, and the blade wheel structure of radial fan can be made ever-changing, and subsequent combination CFD simulation analysis can be surveyed
It is better can rapidly to obtain performance further according to analysis result to model local optimum optimizing for the performance for trying out every kind of structure
Prismatic blade radial fan impeller pattern.
In order to solve the above technical problems, the present invention is addressed by following technical proposals：A kind of prismatic blade radial fan
The design method of impeller, includes the following steps：1, a kind of design method of prismatic blade radial fan impeller, which is characterized in that packet
Include following steps：1：Create impeller hub curve and shroud curve, in Y-X-Z plane create impeller hub curve and
Shroud curve rotates a circle hub curve and shroud curve about the z axis respectively, creates hub curved surface and shroud curved surface, if
Set the control point parameter of hub curve and shroud curve；2：The datum curve and datum mark for creating blade, are selected on hub curve
One section of datum curve as blade therein is selected, benchmark of the point as blade extreme higher position is defined on shroud curve
The parameter of reference point location in the parameter and shroud curve of blade datum curve start-stop position is arranged in point；3：Arc in creation
The leading edge controlling curve in face connects the datum mark defined in the datum curve starting point and shroud of blade, wound by fair curve
The leading edge controlling curve for building middle cambered surface, leading edge controlling curve is rotated a circle about the z axis, and the leading edge for creating cambered surface in blade cuts song
Face；4：Cambered surface root curve in blade is created, by the equation controlling curve of middle arc shape, controls blade datum curve along leaf
Wheel is circumferential to be changed, and the root curve of cambered surface in blade is created, and the control point parameter and shape ginseng of equation controlling curve A is arranged
Number；5：Cambered surface in final blade is created, the reference point location holding plane on shroud curve, by cambered surface root in blade
On curve projection to plane, then it is connected using root curve with drop shadow curve come cambered surface initial surface in creating, the cambered surface in
Leading edge trimmed surface cut in cambered surface initial surface, obtain cambered surface in true blade；6：Spoon of blade is created, blade is used
The equation controlling curve of section thickness is offset to both sides each molded line inside middle cambered surface all, generates the section wheel of blade
All sectional profile curve lins are combined into a spoon of blade by wide curve, be arranged equation controlling curve B control point parameter and
Form parameter；7：Impeller is created, the trailing edge sideline of cambered surface rotates a circle about the z axis in use generates blade trailing edge trimmed surface, with
Hub curved surface and shroud curved surface together cut blade, create blade entity, after blade entity about the z axis circumference array,
With hub and shroud curved surface Boolean calculation, entire impeller is created, lobe numbers parameter is set.
In above scheme, it is preferred that the hub curve control point parameter includes the radius of the hub origin of curve, height, hub
The radius of End of Curve, height, the angle of hub curve starting point.
In above scheme, it is preferred that the shroud curve control point parameter includes the radius of the shroud origin of curve, height
Degree, the radius of shroud End of Curve, height, the angle of shroud curve starting point and the angle of clearing end, shroud curve
The radius of middle part fillet.
In above scheme, it is preferred that the parameter of the blade datum curve start-stop position, including the starting of blade datum curve
Position ratio locating on hub curve, blade datum curve final position ratio locating on hub curve.
In above scheme, it is preferred that the parameter of reference point location includes base on shroud curve on the shroud curve
Position ratio locating on shroud curve on schedule.
In above scheme, it is preferred that the control point parameter of equation controlling curve A includes that equation control is bent in the step 4
The starting point height and terminal height of line A.
In above scheme, it is preferred that the form parameter of equation controlling curve A includes equation controlling curve A in the step 4
Starting point curvature and clearing end curvature.
In above scheme, it is preferred that the control point parameter of equation controlling curve B includes that equation control is bent in the step 6
Starting point height, the terminal height of line B.
In above scheme, it is preferred that the form parameter of equation controlling curve B includes equation controlling curve B in the step 6
Starting point curvature and clearing end curvature.
Compared with prior art, the present invention having the advantages that：The structure of this prismatic blade runoff radial fan impeller
Design, using the thinking completely different with traditional design method, this is designed as Full Parameterized Design, can be in any desired control
Position addition parameter carry out Controlling model, the equation controlling curve that model also can be used carrys out Controlling model, can succinctly quickly
One prismatic blade radial fan impeller of creation maximum model can be carried out to model and under a small amount of control parameter driving
Interior deformation is enclosed, later using driving instruments such as CAESES, batch controls CFD analysis, and the conclusion of the analysis result of CFD is sentenced
It is disconnected, then change the control parameter of model again according to certain rule, so that model is finally reached an optimal state, adopts
With this method avoid modelling and optimization when blindness and uncertainty, directly save a large amount of manpower and when
Between, the design studies for prismatic blade radial fan impeller provide more scientific approach.
Specific embodiment
Present invention is further described in detail With reference to embodiment.
Embodiment 1：By taking the number of blade is 5 prismatic blade runoff radial fan impellers as an example, design method is：1, leaf is created
The hub curve and shroud curve of wheel create the hub curve and shroud curve of impeller, by hub curve in Y-X-Z plane
It rotates a circle about the z axis respectively with shroud curve, creates hub curved surface and shroud curved surface, hub origin of curve radius is set
45mm, height 10mm, hub End of Curve radius 125mm, 20 ° of angle of height 0mm, hub curve starting point；Shroud curve rises
Put radius 90mm, height 100mm, shroud End of Curve radius 125mm, height 60mm；The angle of shroud curve starting point
10 ° of angle of 50 ° and clearing end, the radius 10mm of fillet in the middle part of shroud curve；2, the datum curve and base of blade are created
On schedule, one section of datum curve as blade therein is selected on hub curve, defines length of curve side on shroud curve
To datum mark of the 0.15 times of location point of shroud curve overall length as blade extreme higher position, blade datum curve start bit is set
Setting locating ratio on hub curve is 0.15, blade datum curve final position ratio 0.88 locating on hub curve,
Reference point location ratio 0.4 locating on shroud curve on shroud curve；3, the leading edge controlling curve of cambered surface in creating,
By the datum mark in the datum curve starting point of blade and shroud curve that are arranged in fair curve Connection Step 2, in creation
The leading edge controlling curve of cambered surface, leading edge controlling curve is rotated a circle about the z axis, creates the leading edge trimmed surface of cambered surface in blade；
4, create cambered surface root curve in blade, in setting the starting point height of arc shape equation controlling curve A be 0.69mm, terminal it is high
Spend 0.23mm, -90 ° of starting point angle, 10 ° of clearing end angle and controlling curve impact factor 60；5, final blade is created
Middle cambered surface, the reference point location holding plane on shroud curve, by blade on the curve projection to plane of cambered surface root, so
It is connected using root curve with drop shadow curve afterwards come cambered surface initial surface in creating, during the leading edge trimmed surface of cambered surface is cut in
Cambered surface initial surface obtains cambered surface in true blade；6, spoon of blade is created, blade sectional thickness equation controlling curve is set
The starting point height 5mm of B, terminal height 3mm, 0 ° of starting point angle and 0 ° of clearing end angle, make each stripe shape inside middle cambered surface
Line is all offset to both sides, and generates the sectional profile curve lin of blade, and all sectional profile curve lins are combined into a spoon of blade；
7, create impeller, the trailing edge sideline of cambered surface rotates a circle about the z axis in use generates blade trailing edge trimmed surface, with hub curved surface and
Shroud curved surface together cuts blade, create blade entity, after blade entity about the z axis circumference array, with hub and
Shroud curved surface Boolean calculation, creates entire impeller, and it is 5 that lobe numbers parameter, which is finally arranged, and obtaining fan impeller blade is 5
Draught fan impeller.
Embodiment 2：By taking the number of blade is 8 prismatic blade runoff radial fan impellers as an example, design method is：1, leaf is created
The hub curve and shroud curve of wheel create the hub curve and shroud curve of impeller, by hub curve in Y-X-Z plane
It rotates a circle about the z axis respectively with shroud curve, creates hub curved surface and shroud curved surface, hub origin of curve radius is set
100mm, the radius 200mm of height 50mm, hub End of Curve, 50 ° of angle of height 0mm, hub curve starting point, including
Radius 200mm, the height 100mm of the radius 150mm of the shroud origin of curve, height 160mm, shroud End of Curve,
20 ° of angle of 80 ° of the angle of shroud curve starting point and clearing end, the radius 30mm of shroud curve middle part fillet；2, it creates
The datum curve and datum mark for building blade select one section of datum curve as blade therein, in shroud on hub curve
Datum mark of the 0.16 times of location point of shroud curve overall length in length of curve direction as blade extreme higher position is defined on curve, if
Setting blade datum curve initial position ratio locating on hub curve is 0.16, blade datum curve final position in hub song
Locating ratio 0.92 on line, reference point location ratio 0.4 locating on shroud curve on shroud curve；3, in creation
The leading edge controlling curve of cambered surface, by the datum curve starting point and shroud song of the blade being arranged in fair curve Connection Step 2
Datum mark on line, the leading edge controlling curve of cambered surface, leading edge controlling curve is rotated a circle about the z axis in creation, is created in blade
The leading edge trimmed surface of cambered surface；4, cambered surface root curve in blade is created, the starting point of arc shape equation controlling curve A in setting
Height is 0.9mm, terminal height 0.3mm, -80 ° of starting point angle, 30 ° of clearing end angle and controlling curve impact factor 40；
5, cambered surface in final blade is created, the reference point location holding plane on shroud curve is bent by cambered surface root in blade
In line projection to plane, then it is connected using root curve with drop shadow curve come cambered surface initial surface in creating, the cambered surface in
Cambered surface initial surface in the cutting of leading edge trimmed surface, obtains cambered surface in true blade；6, spoon of blade is created, setting blade is cut
The starting point height 7mm of face thickness equation controlling curve B, terminal height 5mm, 0 ° of starting point angle and 0 ° of clearing end angle, make
Each molded line inside cambered surface is all offset to both sides, and generates the sectional profile curve lin of blade, by all sectional profile curve lins
It is combined into a spoon of blade；7, impeller is created, the trailing edge sideline of cambered surface rotates a circle about the z axis in use generates blade trailing edge sanction
Curved surface is cut, blade is cut together with hub curved surface and shroud curved surface, blade entity is created, blade entity is justified about the z axis
After all arrays, with hub and shroud curved surface Boolean calculation, entire impeller is created, it is 8 that lobe numbers parameter, which is finally arranged, is obtained
The draught fan impeller that blade is 8.
The blade under different parameters can be obtained, after the success of blower model construction, just by the setting to different designs parameter
Beginning model generally all will not be best performance, as long as being carried out to each mutation model CFD points identical by fine tuning parameter
Analysis finally can search out the model of best performance in the range of parameter limits in conjunction with optimization algorithm appropriate.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
Subject to, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that each fall within of the invention
Protection scope.
Claims (9)
1. a kind of design method of prismatic blade radial fan impeller, which is characterized in that include the following steps：1：Create impeller
Hub curve and shroud curve create the hub curve and shroud curve of impeller in Y-X-Z plane, by hub curve and
Shroud curve rotates a circle about the z axis respectively, creates hub curved surface and shroud curved surface, and hub curve and shroud curve is arranged
Control point parameter；2：The datum curve and datum mark for creating blade, select one section of base as blade therein on hub curve
Directrix curve defines datum mark of the point as blade extreme higher position on shroud curve, the start-stop of blade datum curve is arranged
The parameter of reference point location in the parameter and shroud curve of position；3：The leading edge controlling curve of cambered surface, passes through light in creation
The datum mark that defines in the datum curve starting point and shroud curve of fair curve connection blade, the leading edge of cambered surface controls bent in creation
Line rotates a circle leading edge controlling curve about the z axis, creates the leading edge trimmed surface of cambered surface in blade；4：Create cambered surface in blade
Root curve is controlled blade datum curve and is circumferentially changed along impeller, created by the equation controlling curve A of middle arc shape
The root curve of cambered surface in blade is built, the control point parameter and form parameter of equation controlling curve A are set；5：Create final leaf
Cambered surface in piece, the reference point location holding plane on shroud curve, by blade on the curve projection to plane of cambered surface root,
Then it is connected using root curve with drop shadow curve come cambered surface initial surface in creating, the leading edge trimmed surface of cambered surface is cut in
Middle cambered surface initial surface, obtains cambered surface in true blade；6：Spoon of blade is created, is controlled using the equation of blade sectional thickness
Curve B is offset to both sides each molded line inside middle cambered surface, generates the sectional profile curve lin of blade, and all are cut
The control point parameter and form parameter of equation controlling curve B is arranged at a spoon of blade in facial contour curve combination；7：Create leaf
It takes turns, the trailing edge sideline of cambered surface rotates a circle about the z axis in use generates blade trailing edge trimmed surface, bent with hub curved surface and shroud
Face together cuts blade, blade entity is created, after blade entity about the z axis circumference array, with hub curved surface and shroud
Curved surface Boolean calculation creates entire impeller, and lobe numbers parameter is arranged.
2. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that the hub
Curve control point parameter includes the radius of the hub origin of curve, height, the radius of hub End of Curve, height, hub curve starting point
Angle.
3. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that described
Shroud curve control point parameter includes the radius of the shroud origin of curve, height, the radius of shroud End of Curve, height,
The angle of shroud curve starting point and the angle of clearing end, the radius of shroud curve middle part fillet.
4. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that the blade
The parameter of datum curve start-stop position, including blade datum curve initial position ratio locating on hub curve, blade benchmark
Curve final position ratio locating on hub curve.
5. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that described
The parameter of reference point location includes the ratio that reference point location is locating on shroud curve on shroud curve on shroud curve
Rate.
6. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that the step
The control point parameter of equation controlling curve A includes the starting point height and terminal height of equation controlling curve A in 4.
7. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that the step
The form parameter of equation controlling curve A includes the starting point curvature and clearing end curvature of equation controlling curve A in 4.
8. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that the step
The control point parameter of equation controlling curve B includes the starting point height of equation controlling curve B, terminal height in 6.
9. a kind of design method of prismatic blade radial fan impeller according to claim 1, which is characterized in that the step
The form parameter of equation controlling curve B includes the starting point curvature and clearing end curvature of equation controlling curve B in 6.
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| CN107962830B (en) * | 2017-12-15 | 2019-08-23 | 惠阳航空螺旋桨有限责任公司 | A kind of method of carbon fiber structural layer of cloth cut-parts |
| CN118105618B (en) * | 2024-04-29 | 2024-07-02 | 生命盾医疗技术(苏州)有限公司 | Impeller for catheter pump, manufacturing method and inspection method of impeller, and catheter pump |
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| JP3632789B2 (en) * | 1995-08-28 | 2005-03-23 | 東陶機器株式会社 | Multiblade centrifugal fan design method and multiblade centrifugal fan |
| CN1147662C (en) * | 2002-08-23 | 2004-04-28 | 西安交通大学 | Design method of radial and mixed flow type cylindrical surface secant element ternary impeller |
| JP4183612B2 (en) * | 2003-12-25 | 2008-11-19 | 三菱重工業株式会社 | Axial flow pump |
| JP4880952B2 (en) * | 2005-09-07 | 2012-02-22 | 株式会社酉島製作所 | Axial pump impeller |
| CN102146932A (en) * | 2010-02-09 | 2011-08-10 | 上海东方泵业(集团)有限公司 | Improvement method of centrifugal pump impeller design |
| CN102562654A (en) * | 2012-01-03 | 2012-07-11 | 大同北方天力增压技术有限公司 | Blade profile design method for impeller of radial-flow air compressor |
| CN102797700B (en) * | 2012-09-10 | 2015-09-16 | 三一能源重工有限公司 | A kind of turbocompressor impeller sculpt method |
| CN103994095B (en) * | 2014-04-29 | 2017-01-25 | 江苏大学 | Designing method of multiphase mixed transportation axial flow pump impeller |
| CN106015082B (en) * | 2016-05-13 | 2019-02-05 | 江苏大学 | A kind of optimum design method for the impeller that the core main pump coasting time can be improved |
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Effective date of registration: 20200409 Address after: 210000 19 Su Yuan Avenue, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee after: NANJING TIANFU SOFTWARE Co.,Ltd. Address before: 315000, No. 375, Jiangdong North Road, Jiangdong District, Zhejiang, 006 (19-1), Ningbo Patentee before: NINGBO HIPOINT INDUSTRIAL DESIGN Co.,Ltd. |