CN106015048A - Low noise air-conditioning cooling axial flow fan - Google Patents
Low noise air-conditioning cooling axial flow fan Download PDFInfo
- Publication number
- CN106015048A CN106015048A CN201610533047.3A CN201610533047A CN106015048A CN 106015048 A CN106015048 A CN 106015048A CN 201610533047 A CN201610533047 A CN 201610533047A CN 106015048 A CN106015048 A CN 106015048A
- Authority
- CN
- China
- Prior art keywords
- blade
- axial flow
- flow fan
- air
- 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.)
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- 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
-
- 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
- F04D29/388—Blades characterised by construction
-
- 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
- F04D29/522—Casings; Connections of working fluid for axial pumps especially 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
- F04D29/66—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
- F04D29/663—Sound attenuation
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/501—Elasticity
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 low noise air-conditioning cooling axial flow fan. The low noise air-conditioning cooling axial flow fan comprises an air cylinder, a motor bracket mounted on the air cylinder, a motor mounted in the central position of the motor bracket, a hub with the center being fixedly mounted on a rotary shaft of the motor and a plurality of blades fixedly mounted on the hub, wherein the air inlet and the air outlet of the air cylinder are same in diameter; and the rear edge and the outer edge of each blade are coated with polyurea elastic materials. By coating the rear edge of each blade with the polyurea elastic material, the blades and gas form soft contact, so that the operating noise of the fan is effectively reduced, and meanwhile, wear of an air flow on the blades is reduced; the outer edge of each blade is coated with the polyurea elastic material, so that the gap between each blade and the air cylinder body is effectively reduced, and the efficiency of the fan is improved and meanwhile, the dynamic performance of the fan is improved.
Description
Technical field
The present invention relates to a kind of axial flow blower, particularly a kind of low-noise axial flow fan for cooling air conditioner.
Background technology
Along with greatly developing of national energy-saving reduction of discharging and popularizing energetically of Energy Efficiency Standard, the blower fan producer performance to product, the requirement of the aspect such as efficiency and noise is more and more higher, the especially requirement to existing central air conditioner outdoor unit but axial flow blower is higher, the wheel hub that most central air conditioner outdoor unit but axial flow blower uses is traditional round cartridge type, and the noise of fan operation is rotated by impeller and influences each other between accessory components and produce, impeller is then made up of blade and wheel hub, when traditional round cartridge type wheel hub is at air inlet, the air-flow of air inlet can be affected, produce inlet vortex, make air-flow velocity uneven, thus cause noise to become big, and hub ratio is bigger, air-flow is caused to reduce through the effective area of air inlet and wheel hub, easily cause the result that fan efficiency is relatively low.For solving the problems referred to above, in prior art, the central air conditioner outdoor unit but axial flow blower of a patent No. 201310614282X(low-noise high-efficiency), its wheel hub used includes wheel hub interior lining panel, this wheel hub interior lining panel extends around some equally distributed wheel hub connecting plates, and wheel hub is spatial warping structure, make wheel hub helically paddle, the flow field at the root of blade being fixed on wheel hub connecting plate is effectively improved by this structure, more reduce tradition wind cylinder type wheel hub end-wall boundary layer, make pneumatic noise obtain effective reduction, and fan efficiency is improved.But use this structure, fan blade the most directly contacts with air-flow, when extension set runs, still can produce noise, simultaneously in order to prevent from rubbing between the barrel of blade and air duct, cause blade from becoming worn, a relatively large gap can be left between ordinary circumstance lower blade and air duct, but the aeroperformance of the existence fan in gap causes adverse influence.
At present, polyurea materials has the tensile strength of excellence, pliability, ageing-resistant, media-resistant, the performance such as wear-resisting because of it, it is generally used on steel strand wires, a kind of steel strand wires being filled or coated with polyurea materials such as Application No. 2015100843596, by coating on steel strand wires or filling polyurea materials, not only substantially increase the antiseptic property of steel strand wires, extend the service life of steel strand wires, the most do not affect the physical property of steel strand wires.But, there is presently no document report polyurea materials being used on fan blade.
Summary of the invention
It is an object of the invention to provide that a kind of fan operation efficiency is high, aeroperformance is good, the low-noise axial flow fan for cooling air conditioner of low noise.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
A kind of low-noise axial flow fan for cooling air conditioner, including air duct, be arranged on the electric machine support above described air duct, be arranged on the motor of described electric machine support center position, wheel hub that center is fixedly mounted on electric machine rotational axis, some blades of being fixedly mounted on described wheel hub, the air inlet of described air duct is identical with the diameter of air outlet, and the tailing edge of every described blade and outer are all coated with polyurea elastic material.
Preferably, the thickness of the tailing edge of described blade is the most thinning and the edge indentation of tailing edge.
Preferably, described wheel hub includes hub body, is welded on the axle sleeve matched with described electric machine rotational axis of described hub body center position, the installing plate for installing described blade it is additionally provided with on the outer edge of described hub body, described installing plate is reverse twist along its root edge, and the angle between described face, installing plate place and face, described hub body place is
15
°。
Preferably, every described blade being equipped with the long-pending superimposing thread of a plurality of curved setting, what all described long-pending superimposing threads were spaced from inside to outside is distributed on described blade.
It is further preferred that being shaped as of described blade is wide outside and narrow inside, sweepforward is antecurvature, all described long-pending superimposing thread on every described blade the most gradually broadens setting.
Preferably, the ratio of the overall diameter that the diameter of the air inlet of described air duct is formed when rotated with the fan blade being made up of described wheel hub and described blade
It is 1.06 ~ 1.08:1.
Preferably, described motor matches with the air outlet of air duct, the cross section of described electric machine support in
M
Type
。
Utilization due to technique scheme, the present invention compared with prior art has the advantage that the low-noise axial flow fan for cooling air conditioner of the present invention, by smearing polyurea elastic material on the outer of blade, efficiently reduce the gap between blade and air duct cylinder, improve operational efficiency and the aeroperformance of blower fan, even and if coming in contact the abrasion also not resulting in blade body between blade outer and cylinder；And in the back edge position spray polyurea elastic material of blade so that form soft contact between blade with air, more effectively reduce the operation noise of blower fan.
Accompanying drawing explanation
Accompanying drawing
1
Structural representation one for low-noise axial flow fan for cooling air conditioner of the present invention；
Accompanying drawing
2
Structural representation two for low-noise axial flow fan for cooling air conditioner of the present invention；
Accompanying drawing
3
Schematic diagram for wheel hub with blade assembling；
Wherein:
1
, air duct；
2
, electric machine support；
21
, reinforcement；
3
, motor；
4
, wheel hub；
41
, hub body；
42
, installing plate；
43
, axle sleeve；
5
, blade；
51
, blade outer；
52
, blade tailing edge；
6
, long-pending superimposing thread.
Detailed description of the invention
Come below in conjunction with the accompanying drawings technical scheme is further elaborated.
A kind of low-noise axial flow fan for cooling air conditioner, sees figure
1
Extremely
3
Shown in, including air duct
1
, be arranged on air duct
1
The electric machine support of top
2
, be arranged on electric machine support
2
The motor of center position
3
, the wheel hub that is fixedly mounted on electrode rotary shaft of center
4
, be fixedly mounted on wheel hub
4
On some blades
5
。
In this example, at blade
5
Tailing edge
52
And outer
51
On be all coated with polyurea elastic material, by blade
5
Outer
51
On smear polyurea elastic material, be effectively reduced blade
5
With air duct
1
Gap between cylinder, thus improve fan efficiency and aeroperformance.Here, air duct
1
Air inlet diameter with by wheel hub
4
With blade
5
The ratio of the overall diameter that the fan blade opinion formed is formed when rotated is
1.06~1.08:1
, decreasing the gap between the cylinder of air duct 1 and blade 5, even if rubbing between the cylinder of blade 5 outer 51 and air duct 1 during fan operation, also blade 5 will not be caused abrasion.
And on the tailing edge 52 of blade 5 spray polyurea elastic material, during making fan operation, blade 5 with form soft contact between gas, more effectively reduce the operation noise of blower fan.
Here, in order to reduce eddy current, blade further
5
Tailing edge
52
Thickness is the most thinning and tailing edge
52
Edge indentation, see figure
3
Shown in, thus add blade
5
The turbulence level of trailing edge, is simultaneously the most thinning because of its thickness so that blade
5
More relax with contacting between gas, greatly reduce air-flow to blade
5
Abrasion, extend blade
5
Service life.
In this example, this air duct
1
Air inlet identical with the diameter of air outlet, and air duct
1
Upper corners be with angle, lower end
90
° arc chord angle, under conditions of installation dimension allows, it is allowed to air duct
1
The diameter of air outlet more than or equal to the diameter of air inlet.Use
90
The intake method of ° arc chord angle reduces inlet loss to greatest extent, makes charge air flow tissue be optimized.
In this example, this wheel hub
4
Including hub body
41
, be welded on hub body
41
Center position and motor
3
The axle sleeve that rotary shaft matches
43
, this hub body
41
Outer edge on be additionally provided with for installing blade
5
Installing plate
42
, installing plate
42
It is reverse twist along its root edge.Here this installing plate
42
Face, place and hub body
41
Angle between face, place is
15
°.Compared with prior art, it is by reducing installing plate for this set-up mode
42
With hub body
41
Between angle angle, reduce hub ratio further, reduce tradition wind cylinder type wheel hub simultaneously further
4
End-wall boundary layer, control converted quantity radial pressure gradient, decrease radial second stream loss, coordinate blade
5
Tailing edge
52
Upper spray polyurea elastic material, can reduce noise produced by air-flow further, improve the efficiency of blower fan simultaneously.
In this example, at every blade
5
On be equipped with the long-pending superimposing thread of a plurality of curved setting
6
, every blade
5
On all of long-pending superimposing thread
6
It is spaced setting from inside to outside.Here, because of blade
5
Be shaped as wide outside and narrow inside, sweepforward is antecurvature, here, this blade
5
On all long-pending superimposing thread
6
The most gradually broaden setting, by this set-up mode, effectively reduces the phase contrast of noise harmonic component, passes through blade
5
The harmonic wave of bent angle and prostatitis leaf grating viscous wake match to form suitable phase contrast and effectively reduce periodically unsteady flo w power interaction noise.
In this example, this motor
3
With air duct
1
Air outlet match, this electric machine support
2
Cross section in
M
Type
, electric machine support here
2
For net cover type, impeller rotates produced air-flow from electric machine support
2
Guard flow out, and use the high electric machine support in middle low both sides
2
The air-flow additional drag of air outlet can be effectively reduced.And at electric machine support
2
On be provided with the many reinforcements extended from inside to outside
21
, electric machine support can be effectively increased
2
Rigid.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.
Claims (7)
1. a low-noise axial flow fan for cooling air conditioner, including air duct, be arranged on the electric machine support above described air duct, be arranged on the motor of described electric machine support center position, wheel hub that center is fixedly mounted on electric machine rotational axis, some blades of being fixedly mounted on described wheel hub, the air inlet of described air duct is identical with the diameter of air outlet, it is characterized in that, the tailing edge of every described blade and outer are all coated with polyurea elastic material.
Axial flow fan for cooling the most according to claim 1, it is characterised in that the thickness of the tailing edge of described blade is the most thinning and the edge indentation of tailing edge.
Axial flow fan for cooling the most according to claim 1, it is characterized in that, described wheel hub includes hub body, is welded on the axle sleeve matched with described electric machine rotational axis of described hub body center position, the installing plate for installing described blade it is additionally provided with on the outer edge of described hub body, described installing plate is reverse twist along its root edge, and the angle between described face, installing plate place and face, described hub body place is 15 °.
Low-noise axial flow fan for cooling air conditioner the most according to claim 1, it is characterised in that be equipped with the long-pending superimposing thread of a plurality of curved setting on every described blade, what all described long-pending superimposing threads were spaced from inside to outside is distributed on described blade.
Low-noise axial flow fan for cooling air conditioner the most according to claim 4, it is characterised in that being shaped as of described blade is wide outside and narrow inside, sweepforward is antecurvature, all described long-pending superimposing thread on every described blade the most gradually broadens setting.
Low-noise axial flow fan for cooling air conditioner the most according to claim 1, it is characterised in that the ratio of the overall diameter that the diameter of the air inlet of described air duct is formed when rotated with the fan blade being made up of described wheel hub and described blade is 1.06 ~ 1.08:1.
7., according to the low-noise axial flow fan for cooling air conditioner described in claim 1 to 6 any claim, it is characterised in that described motor matches with the air outlet of air duct, the cross section of described electric machine support is M type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533047.3A CN106015048A (en) | 2016-07-08 | 2016-07-08 | Low noise air-conditioning cooling axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533047.3A CN106015048A (en) | 2016-07-08 | 2016-07-08 | Low noise air-conditioning cooling axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106015048A true CN106015048A (en) | 2016-10-12 |
Family
ID=57108777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610533047.3A Pending CN106015048A (en) | 2016-07-08 | 2016-07-08 | Low noise air-conditioning cooling axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015048A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223445A (en) * | 2018-02-12 | 2018-06-29 | 浙江朗迪集团股份有限公司 | A kind of axial fan impeller |
| CN109441879A (en) * | 2018-12-26 | 2019-03-08 | 浙江科贸实业有限公司 | A kind of combined type impeller ventilation blower and its combined type impeller |
| CN109863673A (en) * | 2016-11-02 | 2019-06-07 | 三菱电机株式会社 | The rotor of vehicle-mounted dlternator |
| CN109958641A (en) * | 2019-05-08 | 2019-07-02 | 中山宜必思科技有限公司 | A kind of axial flow blower structure of high-efficient low-noise |
| CN112815588A (en) * | 2020-12-30 | 2021-05-18 | 株洲天桥奥悦冰雪科技有限公司 | Artificial snow making device |
| CN112833599A (en) * | 2020-12-30 | 2021-05-25 | 株洲天桥奥悦冰雪科技有限公司 | Movable high-temperature snow making machine |
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| CN205744542U (en) * | 2016-07-08 | 2016-11-30 | 江苏富丽华通用设备有限公司 | A kind of low-noise axial flow fan for cooling air conditioner |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109863673A (en) * | 2016-11-02 | 2019-06-07 | 三菱电机株式会社 | The rotor of vehicle-mounted dlternator |
| CN109863673B (en) * | 2016-11-02 | 2021-10-15 | 三菱电机株式会社 | Rotor of AC generator for vehicle |
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| CN112815588A (en) * | 2020-12-30 | 2021-05-18 | 株洲天桥奥悦冰雪科技有限公司 | Artificial snow making device |
| CN112833599A (en) * | 2020-12-30 | 2021-05-25 | 株洲天桥奥悦冰雪科技有限公司 | Movable high-temperature snow making machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20161012 |