CN206397815U - A kind of special blade of propeller fan - Google Patents
A kind of special blade of propeller fan Download PDFInfo
- Publication number
- CN206397815U CN206397815U CN201720050368.8U CN201720050368U CN206397815U CN 206397815 U CN206397815 U CN 206397815U CN 201720050368 U CN201720050368 U CN 201720050368U CN 206397815 U CN206397815 U CN 206397815U
- Authority
- CN
- China
- Prior art keywords
- circular arc
- blade
- arc camber
- propeller fan
- chord length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of special blade of propeller fan, belong to blade technology field, including blade face and petiole, the blade face is combined successively by some circular arc cambers, each circular arc camber has corresponding chord length, the chord length of some circular arc cambers is successively decreased successively, and wherein chord length most long circular arc camber is connected with the petiole.The characteristics of the utility model has efficiency high, noise small and saved.
Description
Technical field
The utility model belongs to the special blade technology field of ventilation blower, and in particular to a kind of special blade of propeller fan.
Background technology
The pneumatic property of axial fan impeller is the principal element for determining fan performance quality, and the section shape of impeller blade
Shape is the key for determining fan performance again.There are many middle shapes in relevant document, most important of which in aviation no more than using
Aircraft wing aerofoil profile；Due to condition limitation, other fields or industry is not put into for the research of aerofoil profile or less input,
The best use of of aerofoil profile usually can not be given full play to as fan impeller blade shape using the existing aerofoil profile of aviation.Generally
Using the advanced pneumatic design analytical technology on science and technology of aviation, for the use condition of blower fan, the special wing of serial fan is designed
Type, is proved by wind tunnel test, and the performance of new aerofoil is higher than original aerofoil profile.The Main Basiss that aerofoil profile starts design are Reynolds systems
Number, it is generally considered that Reynolds number is than relatively low, it is therefore possible to require to keep longer distinguished and admirable section on aerofoil profile aerofoil, to reduce resistance
Power, improves lift-drag ratio.
In existing design, although wing blades are a lot, it uses the efficiency in blower fan to fail to get a promotion, and makes an uproar
Sound is larger, and power-consuming, uses very inconvenient.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of efficiency high, noise be few, axle of function admirable circulation wind
The special blade of machine.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
A kind of special blade of propeller fan, including blade face and petiole, the blade face is combined successively by some circular arc cambers
Form, each circular arc camber has corresponding chord length, the chord length of some circular arc cambers is successively decreased successively, wherein chord length most long circular arc is bent
Face is connected with the petiole.
In a preferred embodiment of the present utility model, it is bent that the blade face is first subtracted the circular arc increased afterwards by least seven sections arc length
Face is combined.
In a preferred embodiment of the present utility model, the circular arc that the blade face (1) is successively decreased successively by seven sections of chord lengths is bent
Face is combined；The length ratio of string is between seven sections of circular arc cambers
150-240:140-230:130-210：125-200:120-195:115-190:110-180.
In a preferred embodiment of the present utility model, every section of circular arc camber is equipped with maximum gauge, seven sections of circles
The maximum gauge ratio of arc surface is 13-29：
11-26:9-23:7-21:6-19:5-17:4-16。
In a preferred embodiment of the present utility model, the petiole is provided with the mounting plane being connected with the blade face,
Chord length most long circular arc camber and the mounting plane form angle in the blade face, and the angle is 30 ° -50 °.
In a preferred embodiment of the present utility model, chord length most short circular arc camber and the installation in the blade face
Plane formation angle, the angle is 7 ° -20 °.
In a preferred embodiment of the present utility model, in seven sections of circular arc cambers, chord length is in most median
Circular arc camber forms 13 ° -28 ° of angle with the mounting plane.
In a preferred embodiment of the present utility model, the petiole is cylindrical type or ladder type.
In a preferred embodiment of the present utility model, the circular arc camber that some chord lengths are successively decreased successively is integrally formed
The blade face.
By above-mentioned technical proposal, the beneficial effects of the utility model are：
The utility model uses based on Isolated Airfoil method by setting rational short fluid layer, uses for reference and absorb pneumatic
The blower fan engineering design system of the design philosophy and method of fan and properller is designed, and effectively increases fan blade application
Efficiency into blower fan.
The utility model is applied in blower fan, and compared to traditional blower fan, efficiency improves 10%-35%, lower noise 3-10
Decibel, economized on electricity 10-20%, and during it is applied, more existing blower fan, efficiency is increased substantially, and noise is substantially reduced, advanced technology, property
Can be excellent.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of front view for embodiment that Fig. 1 provides for the utility model；
A kind of top view for embodiment that Fig. 2 provides for the utility model；
A kind of right view for embodiment that Fig. 3 provides for the utility model；
The front view for another embodiment that Fig. 4 provides for the utility model；
The top view for another embodiment that Fig. 5 provides for the utility model；
The right view for another embodiment that Fig. 6 provides for the utility model；
Numeral and the corresponding component title represented by letter in figure：
1, blade；101st, the first circular arc camber；102nd, the second circular arc camber；103rd, three-arc curved surface；104th, the 4th circle
Arc surface；105th, the 5th circular arc camber；106th, the 6th circular arc camber；107th, the 7th circular arc camber；2nd, petiole.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Embodiment 1
Referring to the drawings shown in 1-3, the special blade of a kind of propeller fan that the utility model is provided, including blade face 1 and leaf
Handle 2, the blade face 1 is combined successively including some circular arc cambers, and each circular arc camber has corresponding chord length, and some circular arcs are bent
The chord length in face is successively decreased successively, and wherein chord length most long circular arc camber is connected with the petiole.
Wherein, circular arc camber is specially aerofoil profile.
In above-mentioned blade face 1, the overall arc curve on blade face 1 be it is first long after short long again, i.e., some circular arc cambers on blade face 1
In, the arc length of circular arc camber is short to a certain degree first gradually to be shortened from most long, then elongated again.Some circular arc camber shapes
Into one with respect to the blade face 1 for having warp surface.
Wherein petiole 2 is trapezium structure.
In above-described embodiment, due to based on Isolated Airfoil method so that whole blade face keeps longer laminar flow section, and then
Resistance is reduced, lift-drag ratio is improved, is applied in blower fan, compared with existing blower fan, its efficiency is carried than conventional fan efficiency
It is high 20%, 5 decibels of lower noise, economize on electricity reaches 15%, and then improves the life-span of product.
Embodiment 2
Referring to the drawings shown in 4-6, a kind of special blade of propeller fan, including blade face 1 and petiole 2, the blade face 1 is by seven
Section circular arc camber is combined successively, including the first circular arc camber 101, the second circular arc camber 102, three-arc curved surface 103, the
Four circular arc cambers 104, the 5th circular arc camber 105, the 6th circular arc camber 106 and the 7th circular arc camber 107, each circular arc camber have
Corresponding chord length, the chord length of some circular arc cambers is successively decreased successively, and wherein chord length most long circular arc camber is connected with the petiole 2.
Wherein petiole 2 is cylindrical structural.
Wherein circular arc camber is specially aerofoil profile.
In use, the chord length of seven sections of circular arc cambers is reduced successively, and the chord length ratio of seven sections of circular arc cambers is：206：190：
180：170：166：162：160.
Wherein, the generally curved surface of blade face 1, and the curved surface is provided with certain thickness, every section of circular arc camber is equipped with thickness,
And the thickness of every section of circular arc camber has maximum gauge, and seven sections of maximum gauge value ratio is 23：20：17：15：13：12：
11。
Seven sections of circular arc camber its chord lengths are followed successively by the first circular arc camber 101, the second circular arc camber the 102, the 3rd from big to small
Circular arc camber 103, the 4th circular arc camber 104, the 5th circular arc camber 105, the 6th circular arc camber 106 and the 7th circular arc camber 107,
In the petiole 2 of arc-shaped structure, the uppermost face of cylindrical structural is connection plane, and connection plane is connected with the blade face 1, its
In the first circular arc camber 101 and connection plane 44 ° of angles of formation, the 4th circular arc camber 104 formed with the plane that connects
23 ° of angles, the 7th circular arc camber 107 and connection plane 15 ° of angles of formation.
Referring to the drawings, wherein b is angle of the 7th circular arc camber 107 with being connected plane formation
Due to the restriction of above-mentioned seven crucial circular arc cambers so that the air quantity of whole blade is changed, and is applied to wind
In machine, its performance gets a promotion relative to existing blower fan, and efficiency improves 12%, 8 decibels of lower noise, economize on electricity 10%.It is actual
In structure, seven continuous circular arc cambers sequentially form a blade face 1, can conveniently produce.
The utility model is by analyzing Reynolds number, the principle designed using aerodynamic, reasonable design structure, rationally divides
Section, thickness reasonably changed, and improves whole service efficiency, is a kind of very big progress for blower fan field.
The utility model is applied in practice, and efficiency improves 10%-35%, 3-10 points of lower noise than traditional blower fan
Shellfish, economized on electricity 10-20%, and during it is applied, more existing blower fan, efficiency is increased substantially, and noise is substantially reduced, advanced technology, performance
It is excellent.
Embodiment 3
The utility model is used in practice, according to the specification of different type of machines, it is necessary to design different chord lengths etc..Following table
Lattice give the blade specification of 14 kinds of different type of machines, and specific table 1 is chord data, table 2 be section aerofoil profile maximum gauge (mm) and
Setting angle, be specially：
Table 1
Table 2
In above table, data are design data, and the product of actual production amplifies the scope that shrinkage factor is ± 5%, these
Belong to protection domain of the present utility model.
Above table is the fan blade of 14 kinds of different models in actual production, and it is applied in blower fan with traditional blades
Contrasted, fan efficiency is improved, noise obtains link, while power consumption is minimized.
Under blower fan use condition, the Reynolds number of air viscosity influence is embodied than relatively low, blade is generally in low speed, high-lift
Run under coefficient.But Reynolds number it is relatively low when, it is possible to it is required that the aerofoil of airfoil fan keeps longer laminar flow section, to reduce
Resistance, improves lift-drag ratio；But long laminar flow section, performance depreciation of the aerofoil profile under off design point can be made.Design lift system
Number is 0.5-0.7, and its numeric ratio is larger, in order that the upper and lower airfoil portion of aerofoil profile keeps longer laminar flow section, aerofoil profile must have suitable
When camber, favourable aerofoil pressure distribution could be obtained, be conducive to keeping Laminar Flow, and then the effect of blower fan can be lifted
Rate.In the application, because blade includes multiple circular arc cambers, and each face thickness, chord length, direct etc. are different, therefore cause
Blade is provided with multiple laminar flows section, and the length of each laminar flow section is variable, while overall blade face has certain camber, improves leaf
Piece efficiency.
In the application, according to blade design principle, it can be seen that the aerodynamic configuration of blade on the cross section of blade, it can be with
Producing thrust promotes blower fan to rotate；Meanwhile, the aerofoil profile of the application, it is ensured that air-flow will not produce flow-disturbing by blade slowly excessively, together
When also will not be too fast by speed, do not result in energy dissipation.The thickness of the application design profile, can improve catch wind efficiency.
And blade is integrally distorted, and then Windward angle is lasting change, and maintaining blade, region has the optimal angle of attack windward, not only
Meet the principle of aerodynamic design, and its efficiency is improved also because the aerofoil profile details of distortion angle, thickness and blade
Fan efficiency, reduces noise pollution.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (9)
1. a kind of special blade of propeller fan, including blade face (1) and petiole (2), it is characterised in that：The blade face (1) if by
Dry circular arc camber is combined successively, and each circular arc camber has corresponding chord length, and the chord length of some circular arc cambers is successively decreased successively, its
Middle chord length most long circular arc camber is connected with the petiole.
2. the special blade of a kind of propeller fan according to claim 1, it is characterised in that：The blade face (1) is by least
The circular arc camber that seven sections of chord lengths are successively decreased successively is combined.
3. the special blade of a kind of propeller fan according to claim 2, it is characterised in that：The blade face (1) is by seven sections
The circular arc camber that chord length is successively decreased successively is combined；The length ratio of string is 150-240 between seven sections of circular arc cambers:140-
230:130-210：125-200:120-195:115-190:110-180.
4. the special blade of a kind of propeller fan according to claim 3, it is characterised in that：Every section of circular arc camber is equipped with
Maximum gauge, the maximum gauge ratio of seven sections of circular arc cambers is 13-29：11-26:9-23:7-21:6-19:5-17:4-
16。
5. the special blade of a kind of propeller fan according to claim 3, it is characterised in that：The petiole (2) be provided with
Chord length most long circular arc camber is formed with the mounting plane in the mounting plane of the blade face (1) connection, the blade face (1)
30 ° -50 ° of angle.
6. the special blade of a kind of propeller fan according to claim 5, it is characterised in that：Chord length in the blade face (1)
Most short circular arc camber forms 7 ° -20 ° of angle with the mounting plane.
7. the special blade of a kind of propeller fan according to claim 5, it is characterised in that：Seven sections of circular arc cambers
In, chord length is in the circular arc camber of most median and the angle of 13 ° -28 ° of mounting plane formation.
8. according to a kind of any described special blades of propeller fan of claim 1-7, it is characterised in that：The petiole (2)
For cylindrical type or ladder type.
9. the special blade of a kind of propeller fan according to claim 8, it is characterised in that：Some chord lengths are passed successively
The circular arc camber subtracted is integrally formed the blade face (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050368.8U CN206397815U (en) | 2017-01-16 | 2017-01-16 | A kind of special blade of propeller fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050368.8U CN206397815U (en) | 2017-01-16 | 2017-01-16 | A kind of special blade of propeller fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206397815U true CN206397815U (en) | 2017-08-11 |
Family
ID=59518634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720050368.8U Active CN206397815U (en) | 2017-01-16 | 2017-01-16 | A kind of special blade of propeller fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206397815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545522A (en) * | 2017-01-16 | 2017-03-29 | 陕西金翼通风科技有限公司 | A kind of special blade of propeller fan |
-
2017
- 2017-01-16 CN CN201720050368.8U patent/CN206397815U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545522A (en) * | 2017-01-16 | 2017-03-29 | 陕西金翼通风科技有限公司 | A kind of special blade of propeller fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277245B (en) | Large-thickness blunt-trailing-edge wind-power airfoil profiles and a design method thereof | |
| CN104564804B (en) | The design method of wind wheel blade and tubular wine wheel and wind wheel blade | |
| CN109110124A (en) | A kind of new Main Rotor Blade | |
| CN207333287U (en) | Sawtooth pattern noise reduction axial-flow leaf | |
| CN102003332A (en) | Blade airfoil family of wind turbine | |
| CN104863799A (en) | Method for designing wind turbine airfoil by using Bessel function curve | |
| CN106428551A (en) | Multi-rotor blade device | |
| CN206397815U (en) | A kind of special blade of propeller fan | |
| CN106545522A (en) | A kind of special blade of propeller fan | |
| CN107489646A (en) | Sawtooth pattern noise reduction axial-flow leaf | |
| CN206816552U (en) | Axial-flow windwheel and air conditioner | |
| CN206785724U (en) | A kind of axial fan blade | |
| CN209494730U (en) | A kind of spherical kuppe impeller | |
| CN107100892A (en) | A kind of axial fan blade | |
| CN207064139U (en) | Wind generator set blade | |
| CN106870277A (en) | Efficiently using the blade and its manufacture method of low velocity fluid | |
| CN100400375C (en) | Aerofoil with blunt tail edge | |
| CN216044614U (en) | Integrally formed curved and swept combined blade, impeller and axial flow fan | |
| CN105787217B (en) | A kind of optimum design method of aircraft ripple aerofoil profile | |
| CN203161650U (en) | Axial-flow fan blade and air conditioner with same | |
| CN208106829U (en) | Novel swept-back T-type axial-flow fan blade | |
| CN106762829A (en) | Blade, impeller and blower fan for impeller | |
| CN205858782U (en) | The most wide axial flow blower blade profile | |
| CN112814943A (en) | Integrally formed curved and swept combined blade, impeller and axial flow fan | |
| CN207750284U (en) | A kind of ventilation blower blade and impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |