CN107143521A - Fan blade and fan - Google Patents
Fan blade and fan Download PDFInfo
- Publication number
- CN107143521A CN107143521A CN201710564577.9A CN201710564577A CN107143521A CN 107143521 A CN107143521 A CN 107143521A CN 201710564577 A CN201710564577 A CN 201710564577A CN 107143521 A CN107143521 A CN 107143521A
- Authority
- CN
- China
- Prior art keywords
- blade
- fan
- fan blade
- grid
- serrated slot
- 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.)
- Pending
Links
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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/182—Two-dimensional patterned crenellated, notched
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of fan blade, the wheel hub being connected including blade and with the output shaft of motor, the blade is arranged on wheel hub in divergent shape, the leading edge of the blade offers serrated slot, the depth of the serrated slot is 5 10mm, the present invention further provides a kind of fan using the fan blade, pass through the zigzag and the design of groove of blade, effectively reduce the eddy-currents loss at blade exit, enable reasonably to avoid surge area during operation, the aerodynamic quality of blade is improved, can make fan blade in identical rotating speed with lower noise, bigger flow and Geng Gao static pressure（Farther air-out distance）, therefore it is also more energy efficient.
Description
Technical field
The present invention relates to fan art, more particularly to a kind of fan blade and the fan using the fan blade.
Background technology
Electric fan be it is a kind of be household electrical appliances with widely, the characteristics of it has cheap, easy to use, by people
Popular welcome, but with the increasingly raising of living standard, people are also more next to the novelty of electric fan and intelligentized requirement
It is higher.
The fan blade of desk fan on the market generally uses smooth airflow design, when being run due to this fan, wind at present
Malleation and negative pressure that the windward side of leaf and lee face are produced, promote the flowing of air, when particularly rotating speed is higher, in fan blade
Portion and afterbody produce larger vortex, and the friction between increase wind and fan blade, flow loss increase also increases the negative of motor
Lotus, while noise is higher.
The content of the invention
It is an object of the invention to provide a kind of fan blade reasonable in design, simple in construction, energy-efficient, low noise and use
The fan of the fan blade.
In order to solve the above technical problems, the present invention provides a kind of fan blade, including blade and it is connected with the output shaft of motor
Wheel hub, the blade is arranged on wheel hub in divergent shape, and the leading edge of the blade offers serrated slot, the serrated slot
Depth is 5-10mm, and the fan assembly includes grid, motor, motor housing after grid, fan blade before fan blade, fan blade, and fan blade is set
Put on motor shaft, grid is fixed on grid before motor housing, fan blade and is fixed on after fan blade on grid after fan blade, the fan blade bag
Blade and the wheel hub being connected with the output shaft of motor are included, the blade is arranged on wheel hub in divergent shape, the blade
Leading edge offers serrated slot, and the depth of the serrated slot is 5-10mm, the blade and the folder of the sagittal plane of hub rotation axle
Angle be 35 °, the blade is gradually increased by the sawtooth groove depth of root to top, on the windward side of the blade from serrated slot to
The extension of trailing edge direction is fluted.
To strengthen the acting ability of fan blade, the present invention, which is improved, to be had, the blade and the folder of the sagittal plane of hub rotation axle
Angle is 35 °.
To carry out effective cutting to the air-flow of generation, the present invention, which is improved, to be had, the blade by root to top sawtooth
Groove depth gradually increases.
To reduce collision of the air-flow in air intake surface and outlet air surface intersection, the present invention, which is improved, to be had, the windward side of the blade
On from serrated slot to trailing edge direction extend it is fluted.
The present invention, which is improved, to be had, and the material of grid and grid after fan blade is metal or plastics before the fan blade.
Beneficial effects of the present invention are：The fan blade and fan of new structure, by the zigzag and the design of groove of blade,
The eddy-currents loss at blade exit is effectively reduced, enables reasonably to avoid surge area during operation, the air for improving blade is moved
Power performance, can make fan blade in identical rotating speed with lower noise, bigger flow and Geng Gao static pressure（Farther air-out
Distance）, therefore it is also more energy efficient.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the fan blade of the present invention；
Accompanying drawing 2 is the structural representation of the fan of the present invention.
Embodiment
To describe the technology contents of the present invention in detail, feature, the objects and the effects being constructed, below in conjunction with embodiment
And coordinate accompanying drawing to be explained in detail.
Referring to Fig. 1, a kind of fan blade 1 that the present invention shown in accompanying drawing is provided, including blade 11 and the output shaft with motor 4
The wheel hub 12 being connected, the blade 11 is arranged on wheel hub 12 in divergent shape, and the leading edge of the blade 11 offers saw
Teeth groove 13, the depth of the serrated slot 13 is 5-10mm.
Whole blade 11 is shaped as sickleshaped, is designed according to circular rector negative exponent flow pattern, high coefficient of lift combined is become, blade 11
External form is in sickle shaped is wide outside and narrow inside, three dimensions distorted shape, and quantity is not particularly limited in the present invention, the blade in the present embodiment
11 quantity are 5, and the trailing edge of blade 11 opens up serrated slot 13, and fan noise is reduced under equal air quantity, and wind outlet is produced
Maelstrom cutting be combed into countless small vortex, another aspect is efficiently separated, guide effect to viscous gas type, and most
Turn into desired airflow eventually.
On the other hand, because when fan blade 1 is rotated, further away from blade root, the air-flow of generation is bigger, therefore the sawtooth set
The depth of groove 13 is gradually increased by the depth of root to top, is easy to the more effective cutting of air-flow group to generation；In fan blade 1
During rotation, the air-flow close to blade root is smaller, is separated by shallower indentation cutting, the air-flow group away from blade root compared with
Greatly, small vortex is cut into by deeper indentation, realizes the big air-flow group of wide arc gap cutting speed.Small―gap suture cutting is low
Fast little airflow group；The whirlpool for being the collision of generation air-flow and causing is combined by such dry straight the superior and the subordinate's air-flow that avoids
Loss, so as to reach the purpose of noise reduction.
In the present embodiment, the blade 11 and the angle of the sagittal plane of the rotary shaft of wheel hub 12 are 35 °, and wherein internal diameter is pacified
The difference for filling angle is controlled between ± 2 degree.
In the present embodiment, extend fluted 14, this implementation on the windward side of the blade 11 from serrated slot to trailing edge direction
In example, the quantity of groove 14 is 3 roads, and blade 11 rotates in use, air-flow can flow from the groove 14 of blade 11, reduces
Collision of the air-flow in air intake surface and outlet air surface intersection.
The present invention further provides a kind of fan, referring to the drawings 2, accompanying drawing 2 is by taking bracker fan as an example, and the fan includes
Fan assembly and the electrically-controlled component being controlled to fan assembly, the fan assembly include grid 2, fan blade before fan blade 1, fan blade
Grid 3, motor 4, motor housing 5 afterwards, fan blade 1 are arranged on the axle of motor 4, and grid 3 is fixed on motor housing 5, wind after fan blade
Grid 2 is fixed on after fan blade on grid 3 before leaf, and the fan blade 1 includes blade 11 and is connected with the output shaft of motor 4
Wheel hub 12, the blade 11 is arranged on wheel hub 12 in divergent shape, and the leading edge of the blade 11 offers serrated slot
13, the depth of the serrated slot 13 is 5-10mm.
Said fans can be any fan, such as bracker fan and stand fan.
In the present embodiment, the blade 11 and the angle of the sagittal plane of the rotary shaft of wheel hub 12 are 35 °.
In the present embodiment, the blade 11 is gradually increased by the depth of serrated slot 13 of root to top.
In the present embodiment, from serrated slot forward edge direction extension fluted 14 on the lee face of the blade 11.
Specifically, grid 3 is used to protect after grid 2 and fan blade before fan blade, motor 4 uses direct current generator 4, Ke Yijin
Row stepless speed regulation or the control of many gears, with the powered operation of motor 4, drive the rotation of fan blade 1 after the rotation of the axle of motor 4
Operation, enters air grid 3 after fan blade, grid 2 is blown out before fan blade.
Electrically-controlled component is located inside column, its operation principle：Electrically-controlled component is used for the work of controlled motor 4, and fan has
Multi gear wind speed, motor 4 can divide a variety of gears to run according to different rotating speeds, can pass through remote control, keys or buttons, knob side
Formula, selects the gear of different motors 4, and with timed switching function.
In the present embodiment, the material of grid 2 and grid 3 after fan blade is metal or plastics before the fan blade.
It is prior art not have the technical characteristic described in detail in the application.Above-described embodiment only illustrative the application
Principle and its effect, not for limitation the application.Any person skilled in the art all can be in the essence without prejudice to the application
God and under the scope of, to above-described embodiment carry out modifications and changes.Therefore, those of ordinary skill in the art is not taking off
From spirit disclosed herein and all equivalent modifications completed under technological thought or change, should by the application right
It is required that being covered.
Claims (5)
1. a kind of fan blade, it is characterised in that the wheel hub being connected including blade and with the output shaft of motor, the blade is in diverging
Shape is arranged on wheel hub, and the leading edge of the blade offers serrated slot, and the depth of the serrated slot is 5-10mm, the blower fan
Component includes grid, motor, motor housing after grid, fan blade before fan blade, fan blade, and fan blade is arranged on motor shaft, lattice after fan blade
Grid are fixed on grid before motor housing, fan blade and are fixed on after fan blade on grid, and the fan blade includes blade and the output with motor
The wheel hub that axle is connected, the blade is arranged on wheel hub in divergent shape, and the leading edge of the blade offers serrated slot, described
The depth of serrated slot is 5-10mm, and the blade and the angle of the sagittal plane of hub rotation axle are 35 °, and the blade is by root
Sawtooth groove depth to top gradually increases, and extends fluted from serrated slot to trailing edge direction on the windward side of the blade.
2. the fan blade according to claim 1, it is characterised in that the blade and the folder of the sagittal plane of hub rotation axle
Angle is 35 °.
3. the fan blade according to claim 1, it is characterised in that the blade by root to top sawtooth groove depth by
It is cumulative big.
4. the fan blade according to claim 1, it is characterised in that from serrated slot to trailing edge side on the windward side of the blade
It is fluted to extending.
5. the fan according to claim 1, it is characterised in that the material of grid and grid after fan blade is before the fan blade
Metal or plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564577.9A CN107143521A (en) | 2017-07-12 | 2017-07-12 | Fan blade and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564577.9A CN107143521A (en) | 2017-07-12 | 2017-07-12 | Fan blade and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107143521A true CN107143521A (en) | 2017-09-08 |
Family
ID=59775769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710564577.9A Pending CN107143521A (en) | 2017-07-12 | 2017-07-12 | Fan blade and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107143521A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11187083B2 (en) | 2019-05-07 | 2021-11-30 | Carrier Corporation | HVAC fan |
| CN113738700A (en) * | 2020-05-27 | 2021-12-03 | 广东美的白色家电技术创新中心有限公司 | Fan, air condensing units and air conditioning system |
| USD980965S1 (en) | 2019-05-07 | 2023-03-14 | Carrier Corporation | Leading edge of a fan blade |
-
2017
- 2017-07-12 CN CN201710564577.9A patent/CN107143521A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11187083B2 (en) | 2019-05-07 | 2021-11-30 | Carrier Corporation | HVAC fan |
| USD980965S1 (en) | 2019-05-07 | 2023-03-14 | Carrier Corporation | Leading edge of a fan blade |
| CN113738700A (en) * | 2020-05-27 | 2021-12-03 | 广东美的白色家电技术创新中心有限公司 | Fan, air condensing units and air conditioning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203189332U (en) | Fan blade and fan | |
| JP5709921B2 (en) | Counter-rotating blower | |
| CN107143521A (en) | Fan blade and fan | |
| EP1616102B1 (en) | High performance axial fan | |
| EP2730787B1 (en) | Centrifugal fan and air conditioner using the same | |
| US20040197192A1 (en) | Centrifugal fan | |
| CN106368983B (en) | A kind of bionical blower of low-noise efficient nautilus | |
| CN109578328A (en) | To centrifugal blower after a kind of centrifugal wind wheel and low noise including the wind wheel | |
| JP3204521U (en) | fan | |
| CN103486081A (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN101949387A (en) | Wind tunnel-type fan | |
| CN106930962B (en) | Fan blade structure and fan using same | |
| CN106015090A (en) | Centrifugal fan blade, centrifugal fan and air conditioning equipment | |
| CN205214538U (en) | Hair drier | |
| CN203813600U (en) | A motor which is good in heat radiation effect | |
| CN204082602U (en) | Compound silencing computer fan | |
| CN203939742U (en) | A kind of turbo blower | |
| JP5726107B2 (en) | Counter-rotating blower | |
| CN202118011U (en) | Fan without blades | |
| JP2012026380A (en) | Ceiling fan | |
| CN205126108U (en) | Dust collector motor | |
| CN207750261U (en) | Efficient mute micro-motor flow fan | |
| CN210218176U (en) | Multi-head fan for simulating natural wind | |
| CN201843798U (en) | Wind tunnel type fan | |
| CN203627319U (en) | Centrifugal volute, centrifugal fan with centrifugal volute and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170908 |
|
| WD01 | Invention patent application deemed withdrawn after publication |