CN2553150Y - Fan volute with noise-reducing function - Google Patents
Fan volute with noise-reducing function Download PDFInfo
- Publication number
- CN2553150Y CN2553150Y CN 02240247 CN02240247U CN2553150Y CN 2553150 Y CN2553150 Y CN 2553150Y CN 02240247 CN02240247 CN 02240247 CN 02240247 U CN02240247 U CN 02240247U CN 2553150 Y CN2553150 Y CN 2553150Y
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- China
- Prior art keywords
- perforated plate
- volute
- blower
- utility
- model
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Abstract
The utility model relates to a blower volute with a noise reduction function, which comprises a perforation plate adopted to produce the volute; the utility model is characterized in that a sound transparent film is arranged on the inner wall of the volute of the blower; the utility model isolates smoke and sound absorption materials. The utility model has the advantages of having good noise reduction and sound absorption effects.
Description
Technical field
The utility model belongs to a kind of centrifugal blower worm frame, particularly relates to a kind of spiral case with centrifugal blower of noise reduction with the perforated plate overlay film.
Background technique
The core component of range hood is a blower fan.Kitchen ventilator produces strong noise in the running, mainly comprises aerodynamic noise and mechanical noise.Spiral case is the vitals of centrifugal blower.For the range hood that adopts centrifugal blower, the noise elimination spiral case is a kind of more effective noise-reduction method.Mostly the noise elimination spiral case is to adopt the form of perforated plate or microperforated panel, promptly punches on the wall of spiral case, also can dose the fibrous type sound-absorbing material behind at the spiral case that passes the hole simultaneously.This method but can not be used for range hood, because easy blocked hole of oil pole and lamination coating make the sound absorbing capabilities of lamination coating descend, makes sound absorption structure forfeiture acoustically effective.
Content of the present utility model
The purpose of this utility model is in order to overcome the deficiencies in the prior art, oil smoke and sound-absorbing material can be isolated the volute of blower of a kind of tool decrease of noise functions that the noise reduction acoustically effective is good and provide a kind of.
The purpose of this utility model can realize by following measure:
A kind of volute of blower with decrease of noise functions comprises perforated plate, makes spiral case by perforated plate; It is characterized in that being provided with sound penetrating membrane at the inwall of spiral case dress blower fan.
Aperture on the described perforated plate is 8-20mm, and porosity ratio is 25-40%.
The thickness of described sound penetrating membrane is less than 0.1mm.
The perforated plate of described spiral case not the overlay film side be provided with the fibrous type sound-absorbing material.
The utility model has following advantage compared to existing technology:
The utility model is to cover one deck entrant sound film by the surface of passing orifice plate of adorning the inwall of blower fan at spiral case, thereby realizes the oil smoke isolation is reached the effect of noise reduction 2.0-2.5dB, and does not influence the aerodynamic quality of system substantially.The utility model can be used for all range hoods, also can be used for having other exhaust system of noise reduction requirement.
Description of drawings
Fig. 1 is a spiral case housing perforated plate structure of film schematic representation of the present utility model
1-perforated plate 2-sound penetrating membrane
Fig. 2 is the utility model embodiment 1 schematic representation
Fig. 3 is embodiment's 2 schematic representation of the present utility model
Fig. 4 is the utility model embodiment 3
Fig. 5, Fig. 6, Fig. 7 respectively are embodiment's of the present utility model structural representation respectively
3-cavity 4-fibrous type sound-absorbing material
Embodiment
The utility model also will be described in further detail embodiment in conjunction with the accompanying drawings:
With reference to Fig. 1, a kind of volute of blower with decrease of noise functions comprises perforated plate 1, makes spiral case by perforated plate 1; Inwall at spiral case dress blower fan is provided with sound penetrating membrane 2, and the thickness of described sound penetrating membrane 2 is less than 0.1mm.
Aperture on the described perforated plate 1 is 8mm, and porosity ratio is 40%.Described sound penetrating membrane 2 can be oily, the heat-resisting aluminium foil of retaining.
With reference to Fig. 2, for of the present utility model the perforated plate overlay film is used for the embodiment 1 of volute of blower, adopt the perforated plate overlay film at spiral case housing circumferential surface, do not adopt the perforated plate overlay film at spiral case housing end face.
With reference to Fig. 3, for of the present utility model the perforated plate overlay film is used for the embodiment 2 of volute of blower, do not adopt the perforated plate overlay film at spiral case housing circumferential surface, adopt the perforated plate overlay film at spiral case housing end face.
With reference to Fig. 4, for of the present utility model the perforated plate overlay film is used for the embodiment 3 of volute of blower, adopt the perforated plate overlay film at spiral case housing circumferential surface, also adopt the perforated plate overlay film at spiral case housing end face.
With reference to Fig. 5,6,7 be respectively above-mentioned 3 embodiments' perforated plate not the overlay film side establish fibrous type sound-absorbing material 4.Establish cavity 3 at the opposite side of fibrous type sound-absorbing material 4.
Claims (4)
1, a kind of volute of blower with decrease of noise functions comprises perforated plate (1), makes spiral case by perforated plate (1); It is characterized in that being provided with sound penetrating membrane (2) at the inwall of spiral case dress blower fan.
2, the volute of blower with decrease of noise functions as claimed in claim 1 is characterized in that the aperture on the described perforated plate (1) is 8-20mm, and porosity ratio is 25-40%.
3, the volute of blower with decrease of noise functions as claimed in claim 1, the thickness that it is characterized in that described sound penetrating membrane (2) is less than 0.1mm.
4, the volute of blower with decrease of noise functions as claimed in claim 1, it is characterized in that at spiral case perforated plate (1) not the overlay film side be provided with fibrous type sound-absorbing material (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240247 CN2553150Y (en) | 2002-06-13 | 2002-06-13 | Fan volute with noise-reducing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240247 CN2553150Y (en) | 2002-06-13 | 2002-06-13 | Fan volute with noise-reducing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553150Y true CN2553150Y (en) | 2003-05-28 |
Family
ID=33713424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240247 Expired - Fee Related CN2553150Y (en) | 2002-06-13 | 2002-06-13 | Fan volute with noise-reducing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553150Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362870A (en) * | 2013-07-02 | 2013-10-23 | 西安交通大学 | Sound-absorbing low-noise volute centrifugal fan |
| 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 |
| CN107664141A (en) * | 2017-09-30 | 2018-02-06 | 常州大学 | A kind of high powered diesel locomotive low noise dusting fan spiral case |
| CN107701469A (en) * | 2017-10-23 | 2018-02-16 | 加丁（天津）科技有限公司 | A kind of centrifugal blower, air cleaning unit |
| CN109611358A (en) * | 2019-01-25 | 2019-04-12 | 武汉新宜搏科技有限公司 | A kind of low noise centrifugal fan |
-
2002
- 2002-06-13 CN CN 02240247 patent/CN2553150Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362870A (en) * | 2013-07-02 | 2013-10-23 | 西安交通大学 | Sound-absorbing low-noise volute centrifugal fan |
| 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 |
| CN107664141A (en) * | 2017-09-30 | 2018-02-06 | 常州大学 | A kind of high powered diesel locomotive low noise dusting fan spiral case |
| CN107701469A (en) * | 2017-10-23 | 2018-02-16 | 加丁（天津）科技有限公司 | A kind of centrifugal blower, air cleaning unit |
| CN109611358A (en) * | 2019-01-25 | 2019-04-12 | 武汉新宜搏科技有限公司 | A kind of low noise centrifugal fan |
| CN109611358B (en) * | 2019-01-25 | 2020-07-07 | 武汉新宜搏科技有限公司 | Low-noise centrifugal ventilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |