CN202940667U - Low-noise fan housing - Google Patents
Low-noise fan housing Download PDFInfo
- Publication number
- CN202940667U CN202940667U CN 201220669676 CN201220669676U CN202940667U CN 202940667 U CN202940667 U CN 202940667U CN 201220669676 CN201220669676 CN 201220669676 CN 201220669676 U CN201220669676 U CN 201220669676U CN 202940667 U CN202940667 U CN 202940667U
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- CN
- China
- Prior art keywords
- end shield
- noise
- shield cylinder
- cylinder
- air inlet
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to the motor noise reduction technology, and especially relates to a low-noise fan housing structure. The low-noise fan housing comprises an end housing cylinder, a umbrella-type housing, an air suction nozzle and a mesh window air inlet. The end housing cylinder is composed of two sections, an end housing cylinder II and an end housing cylinder I are connected through bolts, the umbrella-type housing is welded onto the inner side of the end housing cylinder I, the mesh window air inlet is arranged on the side surface of the end housing cylinder II, the inner side of the umbrella-type housing and the inner side of the end housing cylinder II are provided with a sound-absorbing material layer respectively, the sound-absorbing material layers are covered by perforated plates and fixed on the inner side of the umbrella-type housing and the inner side of the end housing cylinder II, and the perforated plates are welded on the inner side of the umbrella-type housing and the inner side of the end housing cylinder II. According to the low-noise fan housing of the utility model, through the improved air deflector structure, the formation and improvement of the wind pressure can be facilitated; the side air inlet structure is improved, the area of the air inlet is increased, the wind resistance of the outer wind path is reduced, the propagation path of the noise is changed, and the noise is blocked in the process of propagation, so that the noise is reduced.
Description
Technical field
The utility model relates to the motor noise reduction technology, particularly relates to a kind of low-noise fan cover structure.
Background technology
Usually, the air cooling motor all can have outer ventilation circuit, by outer ventilation circuit, realizes body is lowered the temperature.Described outer ventilation circuit generally consists of external fan, fan housing, cooler etc.And adopting current fan housing structure, the outer ventilation circuit of formation to have defect, the motor ventilation noise is larger, especially high-speed electric expreess locomotive.
Referring to Fig. 1 a, for current common fan housing structure, mainly by end shield cylinder 1, umbrella hood 2, suction nozzle 3, net window air inlet 4, formed.During the motor operation, external fan 5 rotations, throw away the formation blast by air, and air-flow enters fan housing from rear end.Ventilation noise, due to the obstruction of end shield cylinder 1, mainly spreads out of from rear end, and path comparison is straight, and noise is obstructed little, reduces noise effects bad.External fan 5 is difficult to control with end shield suction nozzle 3 overlap joint gaps: if gap is too large, easily form the airflow circulating loop, lose effective air-flow, reduce cooling effect, referring to numbering in Fig. 1 b, Fig. 1 c(figure 6, mean the airflow circulating loop); If gap is too little, easily cause external fan and end shield suction nozzle to interfere.In fact, because this gap is wayward, cause external fan and the situation that the end shield suction nozzle scratches mutually to happen occasionally.
Summary of the invention
The utility model, for the prior art deficiency, proposes a kind of new structure fan housing that can efficiently reduce the motor ventilation noise.
The technical scheme that the utility model adopts:
A kind of low-noise fan cover, comprise end shield cylinder, umbrella hood, suction nozzle, net window air inlet, described end shield cylinder forms by two sections, end shield cylinder II and end shield cylinder I are bolted, described umbrella hood is welded on end shield cylinder I inboard, and net window air inlet is located at end shield cylinder II side, at described umbrella hood and end shield cylinder II inboard, is provided with sound-absorbing material layer, described sound-absorbing material layer adopts perforated plate to cover and is fixed on umbrella hood and end shield cylinder II inboard, and perforated plate is welded on umbrella hood and end shield cylinder II inboard.
Described low-noise fan cover, umbrella hood and fan form approximately parallel overlap joint, and spacing is at 20～30mm.
The net window air inlet that end shield cylinder side arranges is along end shield cylinder circumference uniform distribution.
Useful good effect of the present utility model:
1, the utility model low-noise fan cover, the fan housing cylinder forms (fan housing cylinder I, fan housing cylinder II) by two sections, umbrella hood is welded on fan housing cylinder I inboard, and net window air inlet is opened in fan housing cylinder II side, and sound-absorbing material layer 9 adopts perforated plate to cover and is fixed on umbrella hood and fan housing cylinder II inboard.By improving wind deflector structure, favourable blast forms and improves.Improve the side air inlet structure, increased air-admitting surface, reduced the outer ventilation circuit windage, changed the propagation path of noise, noise is obstructed in communication process and reduces.
2, the utility model low-noise fan cover, improved the bridging arrangement of end shield and suction nozzle, and umbrella hood forms approximate parallel overlap joint with external fan and coordinates, and distance need not be too near, is difficult for forming gas flow loop, is conducive to blast and forms and improve.Effectively solved old structure end shield two difficult problem that production scene suction nozzle and fan rub mutually during the last ten years.Be convenient to batch production.
3, the utility model low-noise fan cover, take, in fan housing cylinder side, net window air inlet is set, and this net window circumference uniform distribution and is compared from the rear end air intake, has increased air-admitting surface, has reduced the outer ventilation circuit windage, improves cooling effect.In fan housing, umbrella hood and fan housing cylinder inboard arrange sound-absorbing material simultaneously, and the sound-absorbing material area coverage is large, and the border situation can also continue to strengthen the sound-absorbing material usable floor area in the fan housing cylinder factually, and the absorbing sound and lowering noise effect is remarkable.Take side air inlet, the propagation path complications of noise are lost part energy in tortuous communication process, have strengthened noise reduction.
The accompanying drawing explanation
Fig. 1 a～Fig. 1 c: current common motor outer ventilation circuit structural representation;
Fig. 2: the utility model low-noise fan cover structure and motor outer ventilation circuit schematic diagram.
Embodiment
Embodiment mono-: referring to Fig. 2, the utility model low-noise fan cover, comprise the end shield cylinder, umbrella hood 2, net window air inlet 4, it unlike the prior art, described end shield cylinder (is wherein numbered 7 expression end shield cylinder I by two sections, numbering 8 means end shield cylinder II) form, end shield cylinder II and end shield cylinder I are bolted, described umbrella hood 2 is welded on end shield cylinder I inboard, net window air inlet 4 is located at end shield cylinder II side, be provided with sound-absorbing material layer 9 at described umbrella hood and end shield cylinder II inboard, described sound-absorbing material layer adopts perforated plate 10 to cover and is fixed on umbrella hood and end shield cylinder II inboard, perforated plate 10 is welded on umbrella hood and end shield cylinder II inboard.
Described umbrella hood 2 forms approximate parallel overlap joint with external fan 5 and coordinates, and spacing is at 20～30mm.External fan and umbrella hood overlap joint spacing need not too littlely can form blast, and the suction nozzle of more common fan housing and fan bridging arrangement can more effectively be eliminated the hidden danger that fan and suction nozzle rub mutually.Take, in fan housing cylinder side, net window air inlet is set, net window air inlet is along fan housing cylinder circumference uniform distribution, and compares from the rear end air intake, increased air-admitting surface, reduced the outer ventilation circuit windage, improves cooling effect.
The utility model low-noise fan cover, during the motor operation, the external fan rotation, throw away the formation blast by air, and air-flow net window from the side enters fan housing, and this is conducive to enlarge air-admitting surface.This overlapping mode of external fan and umbrella hood, make air-flow in the process of circulation, due to stopping of umbrella hood, can not form the airflow circulating loop, is conducive to blast and forms, and improves cooling effect, and the overlap joint gap need not be too little, do not have interference hidden danger.A ventilation noise part is absorbed by sound-absorbing material, and another part, due to the obstruction of end shield cylinder, mainly spreads out of from the side, and the path comparison complications are lost part energy in tortuous communication process, spread out of reducing noise.
Claims (3)
1. a low-noise fan cover, comprise end shield cylinder, umbrella hood, net window air inlet, it is characterized in that: described end shield cylinder forms by two sections, end shield cylinder II and end shield cylinder I are bolted, described umbrella hood is welded on end shield cylinder I inboard, and net window air inlet is located at end shield cylinder II side, at described umbrella hood and end shield cylinder II inboard, is provided with sound-absorbing material layer, described sound-absorbing material layer adopts perforated plate to cover and is fixed on umbrella hood and end shield cylinder II inboard, and perforated plate is welded on umbrella hood and end shield cylinder II inboard.
2. low-noise fan cover according to claim 1 is characterized in that: the approximate parallel overlap joint of described umbrella hood and fan, spacing is at 20～30mm.
3. low-noise fan cover according to claim 1 and 2 is characterized in that: the net window air inlet that end shield cylinder side arranges is along end shield cylinder circumference uniform distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220669676 CN202940667U (en) | 2012-12-07 | 2012-12-07 | Low-noise fan housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220669676 CN202940667U (en) | 2012-12-07 | 2012-12-07 | Low-noise fan housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940667U true CN202940667U (en) | 2013-05-15 |
Family
ID=48324889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220669676 Expired - Fee Related CN202940667U (en) | 2012-12-07 | 2012-12-07 | Low-noise fan housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940667U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317420A (en) * | 2016-04-27 | 2017-11-03 | Abb技术有限公司 | Electric machine stand and motor |
| CN107370277A (en) * | 2017-08-30 | 2017-11-21 | 卧龙电气集团股份有限公司 | A kind of motor fan housing |
| CN107394950A (en) * | 2017-09-19 | 2017-11-24 | 徐东旭 | A kind of explosion-proof motor fan cover of low noise |
-
2012
- 2012-12-07 CN CN 201220669676 patent/CN202940667U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317420A (en) * | 2016-04-27 | 2017-11-03 | Abb技术有限公司 | Electric machine stand and motor |
| CN107317420B (en) * | 2016-04-27 | 2019-09-20 | Abb瑞士股份有限公司 | Electric machine stand and motor |
| CN107370277A (en) * | 2017-08-30 | 2017-11-21 | 卧龙电气集团股份有限公司 | A kind of motor fan housing |
| CN107370277B (en) * | 2017-08-30 | 2023-10-10 | 卧龙电气驱动集团股份有限公司 | Motor fan housing |
| CN107394950A (en) * | 2017-09-19 | 2017-11-24 | 徐东旭 | A kind of explosion-proof motor fan cover of low noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20201207 |