CN203257752U - Centrifugal noise elimination draught fan shell - Google Patents
Centrifugal noise elimination draught fan shell Download PDFInfo
- Publication number
- CN203257752U CN203257752U CN 201320297508 CN201320297508U CN203257752U CN 203257752 U CN203257752 U CN 203257752U CN 201320297508 CN201320297508 CN 201320297508 CN 201320297508 U CN201320297508 U CN 201320297508U CN 203257752 U CN203257752 U CN 203257752U
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- CN
- China
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- plate
- side plate
- volute
- front side
- spiral case
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- Expired - Fee Related
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Abstract
The utility model relates to a centrifugal noise elimination draught fan shell which comprises a front side plate, a back side plate, a volute plate I and a volute plate II. The volute plate I and the volute plate II are fixed between the front side plate and the back side plate in a clamped mode and form a volute-shaped cavity between the front side plate and the back side plate, a noise absorption cotton layer is arranged in the cavity in a clamped mode, a connecting flange connected with an air inlet of a draught fan is arranged in the middle of the front side plate, the volute plate I and the volute plate II are respectively provided with an air outlet in the bottom of the front side plate and the bottom of the back side plate, and an air outlet flange used for being connected with a pipeline is arranged on the periphery of each air outlet. A noise elimination device and the shell are welded into a whole, and therefore the size of the centrifugal noise elimination draught fan shell is reduced. After noise produced by the draught fan passes through the volute-shaped cavity formed by the volute plate I, the volute plate II, the side plate I and the side plate II, noise waves are emitted and interfered by the noise absorption cotton strip arranged in the cavity in a clamped mode and absorbed by the noise absorption cotton, and therefore the purpose of noise elimination can be achieved; the centrifugal noise elimination draught fan shell is good in noise elimination effect, small in occupied area and saving in manufacturing cost.
Description
Technical field
The utility model relates to the silencing apparatus technical field, is specifically related to a kind of centrifugal fan casing silencer.
Background technique
Silencing apparatus is to utilize sound wave when porous sound-absorbing material is propagated, and is rubbed and viscous resistance, acoustic energy is converted into thermal energy consumption dissipates, thereby reach the purpose of noise elimination flat.Existing noise-eliminating device for air-blower mostly adopts independent design, and there are the drawbacks such as floor space is large, manufacture cost is high, soundproof effect is bad in it.
Summary of the invention
The utility model provides a kind of noise-eliminating device for air-blower that is connected in one with blower fan in order to overcome the deficiency of above technology.
Novelly overcome the technological scheme that its technical problem adopts and be:
This centrifugal silenced fan casing, comprise front side plate, back side panel, clamp the spiral case plate I and the spiral case plate II that are fixed between front side plate and the back side panel, described spiral case plate I and spiral case plate II form the cavity of a scroll casing shape between front side plate and back side panel, clamped the acoustical cotton layer in the described cavity, be provided with the adpting flange that is connected with air inlet in the middle of the described front side plate, described spiral case plate I and spiral case plate II form an exhaust outlet in the bottom of front side plate and back side panel, and described exhaust outlet periphery is provided with the exhaust outlet flange for connecting pipeline.
In order further to improve soundproof effect, be provided with some holes on the above-mentioned spiral case plate I.
The beneficial effects of the utility model are: this silencer and casing are welded as a whole, thereby have reduced volume.Utilize the sound-absorbing sliver that wherein clamps to make sound wave launch, interfere and be absorbed by acoustical cotton within it behind the cavity of the noise that blower fan produces through forming a scroll casing shape between spiral case plate I, spiral case plate II, side plate I and the side plate II, thereby reach the purpose of noise elimination.The air channel soundproof effect of scroll casing shape is good, and floor space is little, has saved manufacture cost.
Description of drawings
Fig. 1 is main TV structure schematic representation of the present utility model;
Fig. 2 is left TV structure schematic representation of the present utility model;
Among the figure, 1. front side plate 2. spiral case plate II 3. acoustical cotton layers 4. spiral case plate I 5. back side panels 6. adpting flanges 7. exhaust outlet flanges.
Embodiment
Be described further below in conjunction with accompanying drawing 1,2 pairs of the utility model of accompanying drawing.
This core type silenced fan casing, comprise front side plate 1, back side panel 5, clamp the spiral case plate I 4 and the spiral case plate II 2 that are fixed between front side plate 1 and the back side panel 5, described spiral case plate I 4 and spiral case plate II 2 form the cavity of a scroll casing shape between front side plate 1 and back side panel 5, clamped acoustical cotton layer 3 in the described cavity, be provided with the adpting flange 6 that is connected with air inlet in the middle of the described front side plate 1, described spiral case plate I 4 and spiral case plate II 2 form an exhaust outlet in the bottom of front side plate 1 and back side panel 5, and described exhaust outlet periphery is provided with the exhaust outlet flange 7 for connecting pipeline.Mode by welding is welded with said apparatus, thereby reduces volume.Utilize the acoustical cotton layer 3 that wherein clamps to make sound wave launch, interfere and be absorbed by acoustical cotton within it behind the cavity of the noise that blower fan produces through forming a scroll casing shape between spiral case plate I 4, spiral case plate II 2, front side plate 1 and the back side panel 5, thereby reach the purpose of noise elimination.The air channel soundproof effect of scroll casing shape is good, and floor space is little, has saved manufacture cost.
According to making use and different, spiral case plate I 4 is designed to orifice plate or microwell plate structure, this structural hole can be that sound wave is subject to molecular friction and viscous resistance when going deep into hole, makes acoustic energy transfer heat energy to, thereby has further improved the soundproof effect of this fan casing silencer.
Claims (2)
1. centrifugal silenced fan casing, it is characterized in that: comprise front side plate (1), back side panel (5), clamp the spiral case plate I (4) and the spiral case plate II (2) that are fixed between front side plate (1) and the back side panel (5), described spiral case plate I (4) and spiral case plate II (2) form the cavity of a scroll casing shape between front side plate (1) and back side panel (5), clamped acoustical cotton layer (3) in the described cavity, be provided with the adpting flange (6) that is connected with air inlet in the middle of the described front side plate (1), described spiral case plate I (4) and spiral case plate II (2) form an exhaust outlet in the bottom of front side plate (1) and back side panel (5), and described exhaust outlet periphery is provided with the exhaust outlet flange (7) for connecting pipeline.
2. centrifugal silenced fan casing according to claim 1 is characterized in that: be provided with some holes on the described spiral case plate I (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297508 CN203257752U (en) | 2013-05-28 | 2013-05-28 | Centrifugal noise elimination draught fan shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297508 CN203257752U (en) | 2013-05-28 | 2013-05-28 | Centrifugal noise elimination draught fan shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257752U true CN203257752U (en) | 2013-10-30 |
Family
ID=49470321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320297508 Expired - Fee Related CN203257752U (en) | 2013-05-28 | 2013-05-28 | Centrifugal noise elimination draught fan shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257752U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835997A (en) * | 2014-03-06 | 2014-06-04 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and volute thereof |
| CN105065331A (en) * | 2015-08-19 | 2015-11-18 | 珠海格力电器股份有限公司 | Volute and centrifugal fan with same |
| CN106015101A (en) * | 2016-08-03 | 2016-10-12 | 广东美的制冷设备有限公司 | Volute, fan and air conditioning equipment, |
-
2013
- 2013-05-28 CN CN 201320297508 patent/CN203257752U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835997A (en) * | 2014-03-06 | 2014-06-04 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and volute thereof |
| CN103835997B (en) * | 2014-03-06 | 2017-05-03 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and volute thereof |
| CN105065331A (en) * | 2015-08-19 | 2015-11-18 | 珠海格力电器股份有限公司 | Volute and centrifugal fan with same |
| CN106015101A (en) * | 2016-08-03 | 2016-10-12 | 广东美的制冷设备有限公司 | Volute, fan and air conditioning equipment, |
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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 |
Granted publication date: 20131030 Termination date: 20160528 |