CN205744542U - A kind of low-noise axial flow fan for cooling air conditioner - Google Patents
A kind of low-noise axial flow fan for cooling air conditioner Download PDFInfo
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- CN205744542U CN205744542U CN201620714567.XU CN201620714567U CN205744542U CN 205744542 U CN205744542 U CN 205744542U CN 201620714567 U CN201620714567 U CN 201620714567U CN 205744542 U CN205744542 U CN 205744542U
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Abstract
The utility model discloses 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.By spray polyurea elastic material on the tailing edge of blade so that form soft contact between blade with gas, significantly reduce the operation noise of blower fan, reduce the air-flow abrasion to blade simultaneously；And on the outer of blade spray polyurea elastic material, efficiently reduce the gap between blade and air duct cylinder, the efficiency that improve blower fan improves the aeroperformance of blower fan simultaneously.
Description
Technical field
This utility model 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 what national energy-saving reduced discharging greatly develops and the popularizing energetically of Energy Efficiency Standard, blower fan producer to the performance of product,
The requirement of the aspect such as efficiency and noise is more and more higher, especially the requirement to existing central air conditioner outdoor unit but axial flow blower
Higher, the wheel hub that most central air conditioner outdoor unit but axial flow blower uses is traditional round cartridge type, and the making an uproar of fan operation
Sound is rotated by impeller and influences each other between accessory components and produce, and impeller is then made up of blade and wheel hub, works as tradition
When cylinder type wheel hub is at air inlet, the air-flow of air inlet can be affected, produce inlet vortex, make air-flow velocity uneven
Even, thus cause noise to become big, and hub ratio is relatively big, causes air-flow to reduce through the effective area of air inlet and wheel hub, holds
Easily cause the result that fan efficiency is relatively low.For solving the problems referred to above, in prior art, patent No. 201310614282X(mono-kind is low
Efficient central air conditioner outdoor unit of making an uproar but axial flow blower), its wheel hub used includes wheel hub interior lining panel, this wheel hub interior lining panel four
Extend some equally distributed wheel hub connecting plates week, and wheel hub is spatial warping structure, makes wheel hub helically paddle, by this
Structure effectively improves the flow field at the root of blade being fixed on wheel hub connecting plate, more reduces tradition wind cylinder type hub end
Wall boundary-layer, makes pneumatic noise obtain effective reduction, and fan efficiency is improved.But use this structure, blower fan leaf
Sheet the most directly contacts with air-flow, when extension set runs, still can produce noise, simultaneously in order to prevent from occurring between the barrel of blade and air duct
Friction, causes blade from becoming worn, can leave a relatively large gap between ordinary circumstance lower blade and air duct, but gap
The aeroperformance that there is fan 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, such as a kind of steel strand wires being filled or coated with polyurea materials of Application No. 2015100843596, leads to
Cross and coat on steel strand wires or fill polyurea materials, not only substantially increase the antiseptic property of steel strand wires, extend steel strand wires
In service life, the most do not affect the physical property of steel strand wires.But, there is presently no and polyurea materials is used for fan blade
Document report.
Summary of the invention
The purpose of this utility model is to provide that a kind of fan operation efficiency is high, aeroperformance is good, the low-noise air of low noise
Adjust axial flow fan for cooling.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of low-noise axial flow fan for cooling air conditioner,
Including air duct, it is arranged on the electric machine support above described air duct, is arranged on the motor of described electric machine support center position, center
The wheel hub being fixedly mounted on electric machine rotational axis, the some blades being fixedly mounted on described wheel hub, the air inlet of described air duct
Identical with the diameter of air outlet, 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 include hub body, that be welded on described hub body center position with described motor
The axle sleeve that rotary shaft matches, the outer edge of described hub body is additionally provided with the installing plate for installing described blade, 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, all described long-pending superimposing threads are by interior
Outwards be spaced is distributed on described blade.
All institutes it is further preferred that being shaped as of described blade is wide outside and narrow inside, sweepforward is antecurvature, on every described blade
State long-pending superimposing thread the most gradually to broaden setting.
Preferably, the diameter of the air inlet of described air duct and the fan blade being made up of described wheel hub and described blade are in rotation
The ratio of the overall diameter formed when turning is 1.06 ~ 1.08:1.
Preferably, described motor matches with the air outlet of air duct, and the cross section of described electric machine support is M type.
Due to the utilization of technique scheme, this utility model compared with prior art has the advantage that this practicality is new
The low-noise axial flow fan for cooling air conditioner of type, by smearing polyurea elastic material on the outer of blade, efficiently reduces leaf
Gap between sheet and air duct cylinder, improves operational efficiency and the aeroperformance of blower fan, even and if sending out between blade outer and cylinder
Raw contact does not results in the abrasion of blade body yet；And in the back edge position spray polyurea elastic material of blade so that blade with
Form soft contact between air, more effectively reduce the operation noise of blower fan.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation one of low-noise axial flow fan for cooling air conditioner described in the utility model；
Accompanying drawing 2 is the structural representation two of low-noise axial flow fan for cooling air conditioner described in the utility model；
Accompanying drawing 3 is the schematic diagram of wheel hub and 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 the technical solution of the utility model is further elaborated.
A kind of low-noise axial flow fan for cooling air conditioner, sees Fig. 1 to shown in 3, including air duct 1, is arranged on above air duct 1
Electric machine support 2, be arranged on the motor 3 of electric machine support 2 center position, wheel hub 4 that center is fixedly mounted on electrode rotary shaft,
The some blades 5 being fixedly mounted on wheel hub 4.
In this example, the tailing edge 52 and outer 51 of blade 5 are all coated with polyurea elastic material, by outside blade 5
Along 51, smear polyurea elastic material, be effectively reduced the gap between blade 5 and air duct 1 cylinder, thus improve fan efficiency
And aeroperformance.Here, the diameter of the air inlet of air duct 1 and the fan blade opinion institute's shape when rotated being made up of wheel hub 4 and blade 5
The ratio of the overall diameter become is 1.06 ~ 1.08:1, decreases the gap between the cylinder of air duct 1 and blade 5, though fan operation process
Rub between the cylinder of Leaf 5 outer 51 and air duct 1, 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, shape between blade 5 and gas
Become soft contact, more effectively reduce the operation noise of blower fan.Here, in order to reduce eddy current further, blade 5 tailing edge 52
Thickness is the most thinning and the edge indentation of tailing edge 52, shown in Figure 3, thus adds the turbulent flow of blade 5 trailing edge
Degree, is simultaneously the most thinning because of its thickness so that blade 5 more relaxes with contacting between gas, greatly reduces air-flow pair
The abrasion of blade 5, extends the service life of blade 5.
In this example, the air inlet of this air duct 1 is identical with the diameter of air outlet, and the upper corners of air duct 1 is with angle, lower end
90 ° of arc chord angles, under conditions of installation dimension allows, it is allowed to the diameter of the air outlet of air duct 1 is straight more than or equal to air inlet
Footpath.The intake method using 90 ° of arc chord angles reduces inlet loss to greatest extent, makes charge air flow tissue be optimized.
In this example, this wheel hub 4 includes hub body 41, is welded on rotating with motor 3 of hub body 41 center position
The axle sleeve 43 that axle matches, the outer edge of this hub body 41 is additionally provided with the installing plate 42 for installing blade 5, installing plate 42
It is reverse twist along its root edge.Here the angle between this face, installing plate 42 place and face, hub body 41 place is 15 °.Should
Compared with prior art, it, by reducing the angle angle between installing plate 42 and hub body 41, reduces set-up mode further
Hub ratio, reduces the end-wall boundary layer of tradition wind cylinder type wheel hub 4 simultaneously further, controls converted quantity radial pressure ladder
Degree, decreases the loss of radial second stream, coordinates spray polyurea elastic material on the tailing edge 52 of blade 5, can reduce air-flow further
Produced noise, improves the efficiency of blower fan simultaneously.
In this example, every blade 5 is equipped with the long-pending superimposing thread 6 of a plurality of curved setting, all of on every blade 5
Long-pending superimposing thread 6 is spaced setting from inside to outside.Here, because of blade 5 be shaped as wide outside and narrow inside, sweepforward is antecurvature, here, on this blade 5
All long-pending superimposing thread 6 the most gradually broaden setting, by this set-up mode, effectively reduce the phase of noise harmonic component
Potential difference, matches to form suitable phase contrast by the harmonic wave of the bent angle of blade 5 with prostatitis leaf grating viscous wake and effectively subtracts
Minor cycle property unsteady flo w power interaction noise.
In this example, this motor 3 matches with the air outlet of air duct 1, and the cross section of this electric machine support 2 is M type, motor here
Support 2 is net cover type, and impeller rotates produced air-flow and flows out from the guard of electric machine support 2, and uses middle low both sides high
Electric machine support 2 can be effectively reduced the air-flow additional drag of air outlet.And on electric machine support 2, it is provided with many from inside to outside
The reinforcement 21 extended, can be effectively increased the rigid of electric machine support 2.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow and is familiar with technique
Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All according to this utility model spirit made equivalence change or modify, all should contain protection domain of the present utility model it
In.
Claims (7)
1. a low-noise axial flow fan for cooling air conditioner, including air duct, is arranged on the electric machine support above described air duct, is arranged on
Wheel hub that the motor of described electric machine support center position, center are fixedly mounted on electric machine rotational axis, be fixedly mounted on described
Some blades on wheel hub, the air inlet of described air duct is identical with the diameter of air outlet, it is characterised in that every described blade
Polyurea elastic material all it is coated with on tailing edge and outer.
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 gradually
Thinning and the edge indentation of tailing edge.
Axial flow fan for cooling the most according to claim 1, it is characterised 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, on the outer edge of described hub body also
Being provided with the installing plate for installing described blade, described installing plate is reverse twist along its root edge, described installing plate place
Angle between face 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 all provided with on every described blade
Having 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.
Low-noise axial flow fan for cooling air conditioner the most according to claim 4, it is characterised in that outside being shaped as of described blade
In wide narrow, 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 air inlet of described air duct
The ratio of the overall diameter that diameter 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 institute
The air outlet stating motor and air duct matches, and the cross section of described electric machine support is M type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714567.XU CN205744542U (en) | 2016-07-08 | 2016-07-08 | A kind of low-noise axial flow fan for cooling air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714567.XU CN205744542U (en) | 2016-07-08 | 2016-07-08 | A kind of low-noise axial flow fan for cooling air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744542U true CN205744542U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620714567.XU Active CN205744542U (en) | 2016-07-08 | 2016-07-08 | A kind of low-noise axial flow fan for cooling air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015048A (en) * | 2016-07-08 | 2016-10-12 | 江苏富丽华通用设备有限公司 | Low noise air-conditioning cooling axial flow fan |
| CN109413969A (en) * | 2018-12-24 | 2019-03-01 | 湖南联诚轨道装备有限公司 | A kind of cooling device |
| CN114233661A (en) * | 2021-12-15 | 2022-03-25 | 上海科泰运输制冷设备有限公司 | Air guide sleeve air ring, axial flow fan and air conditioning unit |
| CN114810630A (en) * | 2022-05-20 | 2022-07-29 | 刘家伟 | Axial flow fan with noise reduction function |
-
2016
- 2016-07-08 CN CN201620714567.XU patent/CN205744542U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015048A (en) * | 2016-07-08 | 2016-10-12 | 江苏富丽华通用设备有限公司 | Low noise air-conditioning cooling axial flow fan |
| CN109413969A (en) * | 2018-12-24 | 2019-03-01 | 湖南联诚轨道装备有限公司 | A kind of cooling device |
| CN114233661A (en) * | 2021-12-15 | 2022-03-25 | 上海科泰运输制冷设备有限公司 | Air guide sleeve air ring, axial flow fan and air conditioning unit |
| CN114810630A (en) * | 2022-05-20 | 2022-07-29 | 刘家伟 | Axial flow fan with noise reduction function |
| CN114810630B (en) * | 2022-05-20 | 2024-01-05 | 伊犁天山水泥有限责任公司 | Axial flow fan with noise reduction function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215622 Suzhou City, Zhangjiagang Yue Yue town, Feng Feng West Ring Road, No. 10 (Fu Lihua) () Patentee after: Jiangsu Fulihua general equipment Limited by Share Ltd Address before: 215622 Suzhou City, Zhangjiagang Yue Yue town, Feng Feng West Ring Road, No. 10 (Fu Lihua) () Patentee before: Jiangsu Fulihua General Equipment Co., Ltd. |