CN207297458U - A kind of low noise airfoil type motor centrifugal fan - Google Patents
A kind of low noise airfoil type motor centrifugal fan Download PDFInfo
- Publication number
- CN207297458U CN207297458U CN201720930869.5U CN201720930869U CN207297458U CN 207297458 U CN207297458 U CN 207297458U CN 201720930869 U CN201720930869 U CN 201720930869U CN 207297458 U CN207297458 U CN 207297458U
- Authority
- CN
- China
- Prior art keywords
- wing blades
- fixed disc
- fixing sleeve
- low noise
- centrifugal fan
- 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 low noise airfoil type motor centrifugal fan, including the fixed disc being vertically arranged, ring baffle, the perforation for fixing bearing is equipped with the center of fixed disc, it is integrally formed with perforation to the bearing fixing sleeve extended on front side of fixed disc, bearing fixing sleeve is coaxially disposed with fixed disc, circumferencial direction around bearing fixing sleeve on fixed disc is uniformly provided with multiple wing blades, the wing blades width in the front-back direction is more than bearing fixing sleeve length in the front-back direction, the leading flank of the ring baffle and wing blades is integrally formed；Shown as a result, eliminating blade back air-flow using wing blades and separated according to flow field analysis, further reduce eddy current loss, improve vane efficiency, noise reduces notable.According to Experimental Comparison verification is carried out on 2 1250KW 10KV motors of YBXKK630, on the premise of ensureing that aerodynamic parameter is constant, its noise reduces 5db（A)；Electromechanics loss reduces 2kw；Purpose of design is reached.
Description
Technical field
The utility model belongs to technical field of motors, more particularly to a kind of low noise airfoil type motor centrifugal fan.
Background technology
The current existing centrifugal fan applied on motor uses straight-plate-type blade structure more, this straight-plate-type blade
There are noise is high, airflow inlet impact is big, vane efficiency is low for centrifugal fan；On the other hand, found after aerodynamics is analyzed,
Airflow path is also easy to produce vortex, and flow losses are larger.The development trend of motor requires motor to have low noise, efficient at present
Feature, the aerodynamic noise of pot motor are to influence the main reason for noise of motor index is high, thus there is an urgent need to it is a kind of efficiently,
The motor centrifugal fan of low noise.
The content of the invention
The utility model aim is to provide a kind of low noise airfoil type motor centrifugal fan, greatly reduces high rotating speed electricity
The aerodynamic noise problem of machine；Adopted the technical scheme that to reach above-mentioned purpose：A kind of low noise airfoil type motor centrifuges wind
Fan, including fixed disc, the ring baffle being vertically arranged, the perforation for fixing bearing is equipped with the center of fixed disc,
The bearing fixing sleeve to extension on front side of fixed disc is integrally formed with perforation, bearing fixing sleeve is coaxially disposed with fixed disc,
Circumferencial direction on fixed disc around bearing fixing sleeve is uniformly provided with multiple wing blades, the wing blades anteroposterior direction
Width be more than bearing fixing sleeve length in the front-back direction, the leading flank of the ring baffle and wing blades is integrally formed.
Preferably, the wing blades are curved surface column blade, and the contour line of the cross section of wing blades is by interior
Contour and outer peripheral lines are connected in sequence, and the interior contour has the spline curve of 17 nodes, the abscissa of interior contour node
xIt is interiorWith ordinate yIt is interiorAs shown in following table：
,
The origin of rectangular coordinate system xOy is at the barycenter of wing blades.
Preferably, the outer peripheral lines have the spline curve of 17 nodes, the abscissa x of outer peripheral lines nodeOutsideAnd ordinate
yOutsideAs shown in following table：
,
The origin of rectangular coordinate system xOy is at the barycenter of wing blades.
Preferably, the inner of the interior contour and outer peripheral lines is connected smoothly and forms an edge camber line, the head edge arc
Line is semicircular arc, and the central coordinate of circle of head edge camber line is (x=-64.5, y=45.6), radius R=2.9, unit：Millimeter, directly
The origin of angular coordinate system xOy is at the barycenter of wing blades.
Preferably, the wall thickness of the wing blades is 1.5.
The wing blades of the utility model use newest Theory of Three-dimensional Flowing and airfoil type pneumatic principle, according to reality
Structure needs to carry out optimization design repeatedly, reduces inlet air flow impact；Shown according to flow field analysis as a result, using airfoil type leaf
Piece eliminates the air-flow separation of blade back, further reduces eddy current loss, improves vane efficiency, and noise reduces notable.Root
According on YBXKK630-2 1250KW 10KV motors carry out Experimental Comparison verification, ensure aerodynamic parameter it is constant on the premise of,
Its noise reduces 5db (A)；Electromechanics loss reduces 2kw；Purpose of design is reached.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model；
Fig. 2 be Fig. 1 in along A-A to sectional view；
Fig. 3 is the structure diagram of wing blades.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of low noise airfoil type motor centrifugal fan, including be vertically arranged fixed disc 1,
Ring baffle 3, is equipped with the perforation for fixing bearing at the center of fixed disc 1, is integrally formed with perforation to fixed disc 1
The bearing fixing sleeve 4 of front side extension, bearing fixing sleeve 4 are coaxially disposed with fixed disc 1, are fixed on fixed disc 1 around bearing
The circumferencial direction of set 4 is uniformly provided with multiple wing blades 2, and 2 width in the front-back direction of wing blades is consolidated more than bearing
Surely 4 length in the front-back direction are covered, the leading flank of the ring baffle 3 and wing blades 2 is integrally formed.
As shown in figure 3, the wing blades 2 are curved surface column blade, and the contour line of the cross section of wing blades 2
It is connected in sequence by interior contour 6, head edge camber line 7 and outer peripheral lines 5, the interior contour 6 and outer peripheral lines are with 17 nodes
Spline curve, the abscissa x of interior 6 node of contourIt is interiorWith ordinate yIt is interior, 5 node of outer peripheral lines abscissa xOutsideAnd ordinate
yOutsideAs shown in following table：
The origin of rectangular coordinate system xOy is at the barycenter of wing blades 2.
The head edge camber line 7 is semicircular arc, and the central coordinate of circle of head edge camber line 7 is (x=-64.5, y=45.6), radius
For R=2.9, unit：Millimeter.
Further, the wall thickness of the wing blades 2 is 1.5.
The wing blades 2 of the utility model use newest Theory of Three-dimensional Flowing and airfoil type pneumatic principle, according to reality
Border structure needs to carry out optimization design repeatedly, reduces inlet air flow impact；Shown according to flow field analysis as a result, using airfoil type
Blade 2 eliminates the air-flow separation of blade back, further reduces eddy current loss, improves vane efficiency, and noise reduces notable.
According to Experimental Comparison verification is carried out on YBXKK630-2 1250KW 10KV motors, ensureing the constant premise of aerodynamic parameter
Under, its noise reduces 5db (A)；Electromechanics loss reduces 2kw；Purpose of design is reached.
Limitation of the present embodiment not to works such as the shape of the utility model, material, structures in any form, every foundation
Any simple modification, equivalent change and modification that the technical essence of the utility model makees above example, belongs to this reality
With the protection domain of new technique scheme.
Claims (5)
1. a kind of low noise airfoil type motor centrifugal fan, including fixed disc, the ring baffle being vertically arranged, its feature exist
In being equipped with the perforation for fixing bearing at the center of fixed disc, be integrally formed with perforation to extending on front side of fixed disc
Bearing fixing sleeve, bearing fixing sleeve is coaxially disposed with fixed disc, around the circumferencial direction of bearing fixing sleeve on fixed disc
Multiple wing blades are uniformly provided with, the wing blades width in the front-back direction is more than bearing fixing sleeve length in the front-back direction
Degree, the leading flank of the ring baffle and wing blades are integrally formed.
2. low noise airfoil type motor centrifugal fan according to claim 1, it is characterised in that the wing blades are
Curved surface column blade, and the contour line of the cross section of wing blades is connected in sequence by interior contour and outer peripheral lines, it is described interior
Contour has the spline curve of 17 nodes, the abscissa x of interior contour nodeIt is interiorWith ordinate yIt is interiorAs shown in following table：
,
The origin of rectangular coordinate system xOy is at the barycenter of wing blades.
3. low noise airfoil type motor centrifugal fan according to claim 2, it is characterised in that the outer peripheral lines have 17
The spline curve of a node, the abscissa x of outer peripheral lines nodeOutsideWith ordinate yOutsideAs shown in following table：
,
The origin of rectangular coordinate system xOy is at the barycenter of wing blades.
4. low noise airfoil type motor centrifugal fan according to claim 3, it is characterised in that the interior contour and periphery
The inner of line is connected smoothly and forms an edge camber line, and the head edge camber line is semicircular arc, the central coordinate of circle of head edge camber line
For (x=-64.5, y=45.6), radius R=2.9, unit：Millimeter, the origin of rectangular coordinate system xOy is in wing blades
At barycenter.
5. according to claim 2 to 4 any one of them low noise airfoil type motor centrifugal fan, it is characterised in that the machine
The wall thickness of airfoil fan is 1.5, unit：Millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720930869.5U CN207297458U (en) | 2017-07-28 | 2017-07-28 | A kind of low noise airfoil type motor centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720930869.5U CN207297458U (en) | 2017-07-28 | 2017-07-28 | A kind of low noise airfoil type motor centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297458U true CN207297458U (en) | 2018-05-01 |
Family
ID=62447951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720930869.5U Active CN207297458U (en) | 2017-07-28 | 2017-07-28 | A kind of low noise airfoil type motor centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390500A (en) * | 2018-02-08 | 2018-08-10 | 浙江希尔富电气有限公司 | One kind being based on brushless motor and the special noise reduction combined mechanism of wind turbine |
-
2017
- 2017-07-28 CN CN201720930869.5U patent/CN207297458U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390500A (en) * | 2018-02-08 | 2018-08-10 | 浙江希尔富电气有限公司 | One kind being based on brushless motor and the special noise reduction combined mechanism of wind turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105736426A (en) | Axial flow fan comprising blade pressure surfaces with winglets and blade tops with blowing structures | |
| CN206344995U (en) | Ducted fan for aircraft | |
| CN105756975B (en) | The axial flow blower that a kind of blade inlet edge is blown with groove structure and blade root | |
| CN104454641A (en) | Low-noise axial flow fan impeller for high-speed electric multiple unit cooling system | |
| CN105736425A (en) | Axial flow fan comprising blades with wing-type guide plates and guide blades with bionic tail edges | |
| CN205639000U (en) | Blade leading edge takes axial fan that groove structure and blade root blew | |
| CN107061329A (en) | A kind of axial flow blower | |
| CN101092976A (en) | Synergic action device of controlling flow of airbleed inside blades of diffuser in centrifugal compressor | |
| CN104061187A (en) | Axial flow fan blade, axial flow fan and air conditioner | |
| JP3204521U (en) | fan | |
| CN106939902B (en) | Energy-saving straight-wall front and rear disk variable-curvature curve element ternary impeller and centrifugal fan adopting same | |
| CN109667790A (en) | A kind of bionical leading edge blade of INVESTIGATION ON A HIGH SPEED CENTRIFUGAL COMPRESSOR | |
| CN103486081B (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN202326414U (en) | Axial flow fan | |
| CN207297458U (en) | A kind of low noise airfoil type motor centrifugal fan | |
| CN105782090A (en) | Noise-lowering and vortex-reducing axial flow fan | |
| CN202628612U (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN201547015U (en) | Low-noise centrifugal wind wheel | |
| CN103016401B (en) | Novel axial fan for air-conditioner outdoor unit | |
| WO2020042551A1 (en) | Axial flow fan wheel and axial flow fan using same | |
| CN103122872A (en) | Axial flow fan | |
| CN203584898U (en) | Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan | |
| CN104613009A (en) | Reversible axial flow fan blade with air blowing grooves | |
| CN205101284U (en) | Low noise ceiling fan | |
| CN202659570U (en) | Axial wind wheel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |