CN108180168A - A kind of compound bending fan blade and the fan including the blade - Google Patents
A kind of compound bending fan blade and the fan including the blade Download PDFInfo
- Publication number
- CN108180168A CN108180168A CN201711441554.5A CN201711441554A CN108180168A CN 108180168 A CN108180168 A CN 108180168A CN 201711441554 A CN201711441554 A CN 201711441554A CN 108180168 A CN108180168 A CN 108180168A
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- Prior art keywords
- blade
- fan blade
- fan
- wind wheel
- bending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
- F04D29/386—Skewed blades
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of compound bending fan blade, fan blade is mounted on wind wheel hub, and fan blade and wind wheel hub form wind wheel.Wind wheel is mounted on motor, and motor rotation rotates fan blade, and there are bending changes on direction of rotation and axial direction for fan blade.In a rotational direction, blade inlet edge and trailing edge by blade root to blade tip along direction of rotation are bent and extended fan blade；Fan blade includes ascent stage and descending branch by blade root to blade tip direction, and the ascent stage first extends to form for the blade inlet edge and the trailing edge from blade root to blade tip to air outlet direction, and the ascent stage extends to after peak value and extends to form descending branch to air inlet direction.Fan blade makes fan blade be in sickle in the bending setting of direction of rotation and axial direction; all there are bending changes in direction of rotation and axial direction for sickle blade; fan outlet air can be made more uniform, and wind wheel efficiency can be effectively improved to reduce consumption environmental protection.
Description
Technical field
The present invention relates to fan apparatus fields, and in particular to a kind of compound bending fan blade and the wind including the blade
Fan.
Background technology
At present, fan is the essential component part of the industries such as refrigeration or ventilation, during fan work, gas
Stream can be flowed along the suction surface and pressure face of fan blade, in the rear outlet air of blade, generate air-flow separation, and air-flow is along fan
The suction surface flow rate of blade is higher than the rate on pressure face.Since the suction surface of fan blade is there are friction layer,
And as fan swirling eddy boundary-layer constantly comes off from fan blade rear, a large amount of air-flow whirlpool, therefore fan are generated
The global shape of blade is very big to the influential effect of outlet air.The circle that fan blade of the prior art only radially extends mostly
Arc plate leaf piece, blade do not design bending change, cause fan outlet air uneven, fan efficiency is low.
Application No. is a kind of 201420485808.9 patent " fan blade and fan ", which includes being used for and wheel hub
The connecting portion and transition part of connection and end, the connecting portion are equipped with connection side, and the connection side both ends are respectively first
Corner and the second corner, the thickness of the flabellum ontology is from first corner to second corner and from described
First corner to end is gradually reduced so that and flabellum ontology can utmostly reduce front face area when starting and rotating, also,
The gradient thickness existing for flabellum ontology itself so that fan can drive the more air of surrounding in rotation process
It is flowed so that fan can generate the air quantity of bigger.The patent only optimizes the thickness distribution of fan blade, and
Improvement is not made to the air flow method on blade, can only solve the problems, such as air force, it is impossible to be solved due to curved blade shape
The outlet air problem of non-uniform that shape generates.
So needing to develop a kind of fan blade of shape optimum makes fan outlet air uniform, the efficiency of fan is improved.
Invention content
In order to solve the above technical problem, the present invention provides a kind of compound bending fan blade, and blade is in direction of rotation
All there are bending changes with axial direction, and fan outlet air can be made more uniform, and can effectively improve the reduction consumption of wind wheel efficiency
Environmental protection.
For achieving the above object, the technical solution that the present invention takes is as follows：
A kind of compound bending fan blade, the fan blade are mounted on wind wheel hub, the fan blade and described
Wind wheel hub formed wind wheel described in wind wheel be mounted on motor shaft on, the fan blade is rotated around the motor shaft, air-flow from
The blade inlet edge air inlet of the fan blade, from trailing edge outlet air, the fan blade is on direction of rotation and axial direction
There are bending change, in a rotational direction the blade inlet edge of the fan blade and trailing edge by blade root to blade tip along rotation
Turn direction bending extension；The fan blade includes ascent stage and descending branch, the ascent stage and institute by blade root to blade tip direction
Descending branch is stated in the axial direction to extend.
Preferably, the ascent stage is the blade inlet edge and the trailing edge from blade root to blade tip first to air outlet side
To extending to form, the ascent stage extends to after peak value and extends to form the descending branch to air inlet direction.Fan blade is being revolved
Turning the bending setting of direction and axial direction makes fan blade in sickle, sickle blade in direction of rotation and axial direction all
There are bending changes, and fan outlet air can be made more uniform, and can effectively improve wind wheel efficiency reduction consumption environmental protection.
Preferably, the peak value that the blade inlet edge on the ascent stage in axial direction extends is located at the blade inlet edge
30% -80% position of length；The peak value that the trailing edge on the ascent stage in axial direction extends is located at the leaf
20% -60% position of piece trailing edge length.Blade inlet edge and trailing edge make the distribution of blade surface pressure more to axially extending
Add uniformly, reach and reduce flow losses, improve the effect of wind wheel Energy Efficiency Ratio.
Preferably, the blade profile established angle of the fan blade includes blade tip section established angle b1 and blade root section is installed
Angle b2, b1<The difference of b2, the blade tip section established angle b1 and the blade root section established angle b2 are twist angle of blade b3, described
The angular range of twist angle of blade b3 is 10 °≤b3≤30 °.
Preferably, the blade profile established angle is gradually reduced as the diameter of the wind wheel gradually increases.This blade
Distortion variation can make fan blade do work to be evenly distributed and ensured the uniform outlet air of fan.
Preferably, the section thickness at the fan blade different-diameter is different, and the blade root section thickness is maximum, described
Blade tip section thickness is minimum.
Preferably, the fan blade section thickness is gradually reduced as the rotor diameter increases.
Preferably, fixing lug boss is set on the wind wheel hub, and the fan blade is mounted in the fixing lug boss, institute
It states and at least one positioning column and threaded hole is set in fixing lug boss, corresponding location hole and screw thread are set in the fan blade
Hole is connected the fan blade with the wind wheel hub by bolt.
The present invention also provides a kind of fans, described to lead including wind scooper, diffuser pipe, motor support frame, wind wheel and motor
Fan housing connect to form airflow path system with the diffuser pipe, and the wind wheel is placed in the diffuser pipe, and the wind wheel is mounted on
On the motor, the motor is mounted on motor support frame, and the motor support frame is connect with the wind scooper closing in face, institute
It states wind wheel and includes wind wheel hub and fan blade described in any one of the above embodiments.Further preferred fan blade on fan of the present invention
Quantity for 2 to 7, can ensure enough air quantity in the case that outlet air is uniform.
Preferably, the motor support frame bends frame by two c-types and forms, and the c-type bending frame includes a flat part
With the rake positioned at flat part both sides, the rake connects the wind scooper and receives face mouthful, and two c-type bending members are opposite
Setting, the motor are mounted between two flat parts.
Relative to the prior art, the present invention achieves beneficial technique effect：
There are bending changes on direction of rotation and axial direction for fan blade provided by the invention.Fan blade is being revolved
Turn on direction, blade inlet edge and trailing edge are bent along direction of rotation by blade root to blade tip and extended；The fan blade
On axial direction, blade inlet edge and trailing edge first extend from blade root to blade tip to trailing edge direction, when extending to highest
Extend again to the direction of blade inlet edge.The curved design in two directions of fan blade may insure that air-flow passes through fan blade
Behind surface, uniform air-flow separation is carried out in the posterior border position of fan blade, makes fan outlet air more uniform, and can effectively carry
High wind wheel efficiency reduces consumption environmental protection.Blade inlet edge and trailing edge make the distribution of blade surface pressure more to axially extending
Add uniformly, reach and reduce flow losses, improve the effect of wind wheel Energy Efficiency Ratio.Blade profile established angle is gradual with the diameter of wind wheel
Increase is gradually reduced, at the same the difference of blade tip section established angle b1 and blade root section established angle b2 formed twist angle of blade b3 also with
Variation, the variation of this leaf curling can make fan blade do work to be evenly distributed and ensured the uniform outlet air of fan.Motor
It on the motor support frame being made of two c-types bending framves, is mounted and dismounted convenient for motor, while two c-types bending framves
Two radial load clamping motors can be provided, make motor installation more firm.
Description of the drawings
Fig. 1 is the complete machine figure of fan of the present invention；
Fig. 2 is the wind wheel structure schematic diagram of the present invention；
Fig. 3 is the wind wheel hub complete machine figure of the present invention；
Fig. 4 is the fan balde structure schematic diagram of the present invention；
Fig. 5 is the fan blade section established angle schematic diagram of the present invention.
Reference numeral：
1. fan blade；11. blade inlet edge；12. trailing edge；13. blade root；14. blade tip；15. the ascent stage；16. decline
Section；2. wind wheel hub；21. fixing lug boss；211. positioning column；212 threaded holes；3. wind scooper；4. diffuser pipe；5. protection network；6.
Motor support frame；7. motor.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments to the present invention
It is further elaborated, but the scope of protection of present invention is not limited to following specific embodiments.
As shown in Figures 2 to 4, a kind of compound bending fan blade, fan blade 1 are mounted on wind wheel hub 2, fan blade
1 and wind wheel hub 2 formed wind wheel.Wind wheel is mounted on motor 7, and fan blade 1 is rotated around motor shaft, and air-flow is from fan blade
1 blade inlet edge 11 is entered the wind, from 12 outlet air of trailing edge, the axial direction of fan blade 1 and the axial direction phase of motor shaft
Together, the direction of rotation of fan blade 1 is using the center of wind wheel hub 2 as rotation center, and fan blade 1 is in direction of rotation and axial direction
There are bending changes on direction.In a rotational direction, blade inlet edge 11 and trailing edge 12 are by blade root 13 to leaf for fan blade 1
Point 14 is bent along direction of rotation to be extended；Fan blade 1 includes ascent stage 15 and descending branch 16 by blade root 13 to 14 direction of blade tip,
Ascent stage 15 and descending branch 16 extend in the axial direction.
Ascent stage 15 is the blade inlet edge 11 and the trailing edge 12 from blade root 13 to blade tip 14 first to air outlet side
To extending to form, the ascent stage 15 extends to after peak value and extends to form descending branch 16 to air inlet direction.Fan blade 1 is in rotation side
Making fan blade 1 to the bending setting with axial direction, sickle blade is all deposited in direction of rotation and axial direction in sickle
In bending change, fan outlet air can be made more uniform, and wind wheel efficiency can be effectively improved to reduce consumption environmental protection.
The peak value that blade inlet edge 11 on ascent stage 15 in axial direction extends be located at 11 length of blade inlet edge 30%-
80% position；The peak value that trailing edge 12 on ascent stage 15 in axial direction extends be located at 12 length of trailing edge 20%-
60% position.Blade inlet edge 11 and trailing edge 12 make the distribution of blade surface pressure more uniform, reach and reduce to axially extending
Flow losses improve the effect of wind wheel Energy Efficiency Ratio.
As shown in figure 5, the blade profile established angle of fan blade 1 includes 14 section established angle b1 of blade tip and 13 section of blade root
Established angle b2, b1<The difference of 13 section established angle b2 of b2,14 section established angle b1 of blade tip and blade root be twist angle of blade b3, blade
The angular range of torsional angle b3 is 10 °≤b3≤30 °.As rotor diameter changes, blade profile established angle leaf changes therewith, and
Be gradually reduced as rotor diameter gradually increases section established angle, blade profile established angle with the diameter of wind wheel gradually increase by
Decrescence small, 14 section of blade tip is smallest cross-sectional established angle.This leaf curling variation can be such that the acting of fan blade 1 is uniformly divided
Match and ensure the uniform outlet air of fan.
Section thickness at 1 different-diameter of fan blade is different, and 13 section thickness of blade root is maximum, and 14 section thickness of blade tip is most
It is small.1 section thickness of fan blade is gradually reduced with rotor diameter increase, and the reduction of 1 section thickness of fan blade may insure
Motor 7, which can reach enough rotating speeds, rotates fan blade 1.
As shown in Figures 3 and 4, fixed convex 21 are set on wind wheel hub 2, fan blade 1 is mounted on fixed convex 21 platform, Gu
At least one positioning column 211 and threaded hole 212 are set on fixed convex 21 platform, and positioning column 211 includes at least two forms, it can be ensured that
The installation site and installation direction of fan blade 1 are accurate, and corresponding location hole and threaded hole 212 are set in fan blade 1, positioning
Hole cooperates with positioning column 211, is connected fan blade 1 and wind wheel hub 2 by bolt.
As shown in Figure 1, the present invention also provides a kind of fan, including wind scooper 3, diffuser pipe 4, motor support frame 6, wind wheel
With motor 7, wind scooper 3 connect to form airflow path system with diffuser pipe 4, and air-flow, which enters from wind scooper 3 from diffuser pipe 4, discharges,
Air inlet is provided on wind scooper 3, air outlet is provided on diffuser pipe 4, wind wheel is placed in diffuser pipe 4, and wind wheel is mounted on motor 7
On, motor 7 is mounted on motor support frame 6, and motor support frame 6 is connect with 3 closing in face of wind scooper, and wind wheel includes wind wheel hub 2
With multiple fan blade 1.7 mounting shaft hole of motor is provided on wind wheel hub 2, motor shaft is fixedly connected with axis hole.Each fan
Blade 1 includes the blade inlet edge 11 adjacent with 3 air inlet of wind scooper, the trailing edge 12 opposite with blade inlet edge 11, close to wind
Take turns the blade root 13 of wheel hub 2 and the blade tip 14 opposite with blade root 13.Fan blade 1 is rotated around the center of fan hub, is being rotated
On direction, blade inlet edge 11 and trailing edge 12 are extended by blade root 13 to blade tip 14 along direction of rotation, i.e., in a rotational direction
Blade is in integrally flexuosity；In the axial direction, blade inlet edge 11 and trailing edge 12 are from blade root 13 to blade tip 14 first to going out
Wind direction extends, when extending to highest again to the extension of air inlet direction.Fan blade 1 all exists in direction of rotation and axial direction
Bending change can make fan outlet air more uniform, and can effectively improve wind wheel efficiency reduction consumption environmental protection.
Protection network 5 is additionally provided in the diffuser pipe 4 of the present invention, protection network 5 is arranged on the air outlet position of diffuser pipe 4, prevents
Only external object damages fan blade 1.Further the quantity of preferred fan blade 1 is 2 to 7 on fan of the present invention
It is a, it can ensure enough air quantity in the case that outlet air is uniform.
Motor support frame 6 bends frame by two c-types and forms, and c-type bending frame includes a flat part and positioned at flat part two
The rake of side, rake connection wind scooper 3 receive face mouthful, and two c-type bending members are oppositely arranged, and motor 7 is straight mounted on two
Between portion.Motor 7 is mounted on the motor support frame 6 being made of two c-types bending framves, is mounted and dismounted convenient for motor 7, simultaneously
Two c-type bending framves can provide two radial load clamping motors 7, install motor 7 more firm.
There are bending changes on direction of rotation and axial direction for fan blade 1 provided by the invention.Fan blade 1 exists
On direction of rotation, blade inlet edge 11 and trailing edge 12 are bent along direction of rotation by blade root 13 to blade tip 14 and extended；Fan leaf
In the axial direction, blade inlet edge 11 and trailing edge 12 first prolong piece 1 from blade root 13 to blade tip 14 to 12 direction of trailing edge
It stretches, extends to the direction of blade inlet edge 11 again when extending to highest.The curved design in two directions of fan blade 1 can be with
Air-flow is ensured behind 1 surface of fan blade, is carried out uniform air-flow separation in the posterior border position of fan blade 1, is gone out fan
Wind is more uniform, and can effectively improve wind wheel efficiency reduction consumption environmental protection.Blade inlet edge 11 and trailing edge 12 are to axis
To extension, make the distribution of blade surface pressure more uniform, reach and reduce flow losses, improve the effect of wind wheel Energy Efficiency Ratio.Blade
Section established angle is gradually reduced as the diameter of wind wheel gradually increases, while 14 section established angle b1 of blade tip and 13 section of blade root peace
The twist angle of blade b3 that the difference of dress angle b2 is formed also changes therewith, and this leaf curling b3 variations can make fan blade 1 do work
To the uniform outlet air for evenly distributing and ensureing fan.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific embodiment disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, it although is used in this specification
Some specific terms, but these terms are merely for convenience of description, do not form any restrictions to invention.
Claims (10)
1. a kind of compound bending fan blade, the fan blade is mounted on wind wheel hub, the fan blade and the wind
It takes turns wind wheel described in hub-shaped into wind wheel to be mounted on motor shaft, the fan blade is rotated around the motor shaft, and air-flow is from institute
The blade inlet edge air inlet of fan blade is stated, from trailing edge outlet air, which is characterized in that the fan blade is in direction of rotation and axis
There are bending changes on direction, and the blade inlet edge of the fan blade and trailing edge are by blade root to leaf in a rotational direction
Point is bent along direction of rotation to be extended；The fan blade by blade root to blade tip direction include ascent stage and descending branch, it is described on
It rises section and the descending branch extends in the axial direction.
2. a kind of compound bending fan blade according to claim 1, which is characterized in that the ascent stage is the blade
Leading edge and the trailing edge are extended to form from blade root to blade tip to air outlet direction, the ascent stage extend to peak value backward into
Air port direction extends to form the descending branch.
A kind of 3. compound bending fan blade according to claim 2, which is characterized in that the leaf on the ascent stage
The peak value that piece leading edge in axial direction extends is located at 30% -80% position of the blade inlet edge length；On the ascent stage
The peak value that the trailing edge in axial direction extends is located at 20% -60% position of the trailing edge length.
4. a kind of compound bending fan blade according to claim 1, which is characterized in that the blade of the fan blade is cut
Face established angle includes blade tip section established angle b1 and blade root section established angle b2, b1<B2, blade tip section established angle and described
The difference of blade root section established angle is that the angular range of twist angle of blade b3, the twist angle of blade b3 are 10 °≤b3≤30 °.
5. a kind of compound bending fan blade according to claim 4, which is characterized in that the blade profile established angle with
The diameter for the wind wheel is gradually increased and is gradually reduced.
A kind of 6. compound bending fan blade according to claim 1, which is characterized in that the fan blade different-diameter
The section thickness at place is different, and the blade root section thickness is maximum, and the blade tip section thickness is minimum.
A kind of 7. compound bending fan blade according to claim 1, which is characterized in that the fan blade section thickness
As rotor diameter increase is gradually reduced.
8. a kind of compound bending fan blade according to claim 1, which is characterized in that set on the wind wheel hub solid
Determine boss, the fan blade is mounted in the fixing lug boss, and at least one positioning column and spiral shell are set in the fixing lug boss
Pit sets corresponding location hole and threaded hole in the fan blade, by bolt by the fan blade and the wind wheel
Wheel hub connects.
9. a kind of fan, including wind scooper, diffuser pipe, motor support frame, wind wheel and motor, the wind scooper and the diffuser pipe
Connection forms airflow path system, and the wind wheel is placed in the diffuser pipe, and the wind wheel is mounted on the motor, the electricity
Machine is mounted on motor support frame, and the motor support frame is connect with the wind scooper closing in face, which is characterized in that the wind wheel
Including wind wheel hub and claim 1 to 8 any one of them fan blade.
10. a kind of fan according to claim 9, which is characterized in that the motor support frame bends frame group by two c-types
Into the c-type bending frame includes a flat part and the rake positioned at flat part both sides, and the rake connects the wind-guiding
Cover receipts face mouthful, two c-type bending members are oppositely arranged, and the motor is mounted between two flat parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711441554.5A CN108180168A (en) | 2017-12-27 | 2017-12-27 | A kind of compound bending fan blade and the fan including the blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711441554.5A CN108180168A (en) | 2017-12-27 | 2017-12-27 | A kind of compound bending fan blade and the fan including the blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108180168A true CN108180168A (en) | 2018-06-19 |
Family
ID=62547515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711441554.5A Pending CN108180168A (en) | 2017-12-27 | 2017-12-27 | A kind of compound bending fan blade and the fan including the blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180168A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953224A (en) * | 2018-07-20 | 2018-12-07 | 安吉元融仪器仪表检测有限公司 | Fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953224A (en) * | 2018-07-20 | 2018-12-07 | 安吉元融仪器仪表检测有限公司 | Fan |
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Application publication date: 20180619 |
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