CN106762843A - A kind of vane diffuser with silencer - Google Patents
A kind of vane diffuser with silencer Download PDFInfo
- Publication number
- CN106762843A CN106762843A CN201710108197.4A CN201710108197A CN106762843A CN 106762843 A CN106762843 A CN 106762843A CN 201710108197 A CN201710108197 A CN 201710108197A CN 106762843 A CN106762843 A CN 106762843A
- Authority
- CN
- China
- Prior art keywords
- silencing chamber
- resonant silencing
- frequency
- silencer
- impeller
- 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
- 230000003584 silencer Effects 0.000 title claims abstract description 10
- 230000030279 gene silencing Effects 0.000 claims abstract description 21
- 230000008030 elimination Effects 0.000 claims abstract description 3
- 238000003379 elimination reaction Methods 0.000 claims abstract description 3
- 230000001629 suppression Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
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- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- 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
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of vane diffuser with silencer, specifically a kind of impeller for reducing centrifugal fan belongs to noise elimination technique field by the device of frequency noise.It includes resonant silencing chamber and blade body, and the resonant silencing chamber is fixedly connected with blade body；The resonant silencing chamber is the cavity with certain depth, and the cavity depth depends on impeller by frequency, is a quarter of wave length of sound under the frequency；Several circular holes are provided with the windward side in resonant silencing chamber.Simple structure of the present invention, compact, reasonable, low cost of manufacture, are adapted to be used on the high-speed centrifugal fan of all specifications；The effective reduction and suppression that frequency noise is passed through to centrifugal compressor impeller can be realized, the overall noise of centrifugal compressor is reduced.
Description
Technical field
It is specifically a kind of for reducing centrifugal fan the present invention relates to a kind of vane diffuser with silencer
The impeller device that passes through frequency noise, belong to noise elimination technique field.
Background technology
When centrifugal fan runs, the rotating speed of its impeller typically is up to up to ten thousand rpms, and impeller is to working gas
Compression produce a noise for CF, be referred to as impeller by frequency（BPF: Blade Pass Frequency）, this
The frequency of individual noise is typically up to few kilohertz, is the main source of fan noise.
The content of the invention
It is an object of the present invention to overcome the above deficiencies, so that a kind of vane diffuser with silencer is provided,
The effective reduction and suppression that frequency noise is passed through to centrifugal compressor impeller can be realized, the whole of centrifugal compressor is reduced
Bulk noise.
According to the technical scheme that the present invention is provided, a kind of vane diffuser structure with silencer includes resonant silencing chamber
And blade body, the resonant silencing chamber is fixedly connected with blade body；The resonant silencing chamber is the sky with certain depth
Chamber, is provided with several circular holes on the windward side in resonant silencing chamber.
As a further improvement on the present invention, resonant silencing chamber depth is 10- 70mm；The height of blade body is
5-100mm。
As a further improvement on the present invention, the circular hole on the windward side of the resonant silencing chamber is set to 2 to 40, and circular hole is straight
Footpath is φ 0.5-3mm, and center of circular hole is away from being 1-5mm；Make it with compressed gas circulation regional connectivity.
As a further improvement on the present invention, the cavity depth depends on impeller by frequency, is sound wave under the frequency
The a quarter of wavelength.
Compared with the prior art the present invention has advantages below：
Simple structure of the present invention, compact, reasonable, low cost of manufacture, are adapted to be used on the high-speed centrifugal fan of all specifications；Can
The effective reduction and suppression that frequency noise is passed through to centrifugal compressor impeller are realized, the entirety for reducing centrifugal compressor is made an uproar
Sound.
Brief description of the drawings
Fig. 1 is structural profile schematic diagram of the invention.
Fig. 2 is resonant silencing chamber of the invention windward side front view.
Specific embodiment
The present invention will be further described with reference to the drawings below：
As shown in Figure 1：The present invention includes resonant silencing chamber 1 and blade body 2.The resonant silencing chamber 1 is a thin wall cavity, empty
Chamber depth is determined by impeller by frequency, is a quarter of wave length of sound under the frequency, is drilled with its windward side such as Fig. 2 institutes
Show the aperture that some radiuses are r；Resonant silencing chamber 1 is fixedly connected with blade body 2.
By taking the vane diffuser used by GL3 type centrifugal blowers as an example, its impeller is about 5000 hertz by frequency（Hz）,
It is not difficult to draw that under the frequency wave length of sound is 68mm, then the depth of resonant silencing chamber 1 of the vane diffuser used by model type
It is 68/4=17mm.The height of blade is 24.3mm, and 9 a diameter of φ are drilled with the windward side in its resonant silencing chamber 1
1.5mm, the small sircle hole of centre-to-centre spacing 2.5mm makes it with compressed gas circulation regional connectivity.It should be noted that each size of the above
And drilling quantity, shape be example, minor modifications are carried out on this basis and belong to scope of the presently claimed invention.
When centrifugal fan is operated, noise runs into the leading edge of blade when being propagated along air-flow wind direction, disappears by resonance
Identical with blade passing frequency, opposite in phase a sound wave is obtained after operatic tunes reflection, so as to counteract partial blade by frequency
Noise in rate, reduces overall noise level.
Claims (4)
1. a kind of vane diffuser with silencer, it is characterized in that：Including resonant silencing chamber（1）And blade body（2）, it is described
Resonant silencing chamber（1）With blade body（2）It is fixedly connected；The resonant silencing chamber（1）It is the cavity with certain depth, altogether
Shake noise elimination cavity（1）Windward side on there is no several circular holes.
2. a kind of vane diffuser with silencer as claimed in claim 1, it is characterized in that：The resonant silencing chamber（1）
Depth is 10- 70mm；Blade body（2）Height be 5-100mm.
3. a kind of vane diffuser with silencer as claimed in claim 1, it is characterized in that：The resonant silencing chamber（1）
Circular hole on windward side is set to 2 to 40, and Circularhole diameter is φ 0.5-3mm, and center of circular hole is away from being 1-5mm；Make itself and compressed gas
Body circulating area is connected.
4. a kind of vane diffuser with silencer as claimed in claim 1, it is characterized in that：The cavity depth is depended on
Impeller, by frequency, is a quarter of wave length of sound under the frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108197.4A CN106762843A (en) | 2017-02-27 | 2017-02-27 | A kind of vane diffuser with silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108197.4A CN106762843A (en) | 2017-02-27 | 2017-02-27 | A kind of vane diffuser with silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762843A true CN106762843A (en) | 2017-05-31 |
Family
ID=58959213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710108197.4A Pending CN106762843A (en) | 2017-02-27 | 2017-02-27 | A kind of vane diffuser with silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829985A (en) * | 2017-09-28 | 2018-03-23 | 中国航发动力股份有限公司 | A kind of modification method of aeroengine fan blades intrinsic frequency |
| CN108731066A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3008930B2 (en) * | 1998-06-23 | 2000-02-14 | ダイキン工業株式会社 | Impeller for blower |
| CN101052784A (en) * | 2005-05-28 | 2007-10-10 | 西门子公司 | Air inlet for turbine supercharger of internal-combustion engine |
| CN202883470U (en) * | 2012-09-24 | 2013-04-17 | 浙江苏泊尔家电制造有限公司 | Fan structure of noise-reduction type extractor hood |
| CN104728158A (en) * | 2015-03-30 | 2015-06-24 | 华帝股份有限公司 | Wind wheel for range hood |
| CN205207262U (en) * | 2015-11-22 | 2016-05-04 | 象山巨鹰科技发展有限公司 | Fan wheel for air purifier |
| CN206668626U (en) * | 2017-02-27 | 2017-11-24 | 江苏杰尔科技股份有限公司 | A kind of vane diffuser with silencer |
-
2017
- 2017-02-27 CN CN201710108197.4A patent/CN106762843A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3008930B2 (en) * | 1998-06-23 | 2000-02-14 | ダイキン工業株式会社 | Impeller for blower |
| CN101052784A (en) * | 2005-05-28 | 2007-10-10 | 西门子公司 | Air inlet for turbine supercharger of internal-combustion engine |
| CN202883470U (en) * | 2012-09-24 | 2013-04-17 | 浙江苏泊尔家电制造有限公司 | Fan structure of noise-reduction type extractor hood |
| CN104728158A (en) * | 2015-03-30 | 2015-06-24 | 华帝股份有限公司 | Wind wheel for range hood |
| CN205207262U (en) * | 2015-11-22 | 2016-05-04 | 象山巨鹰科技发展有限公司 | Fan wheel for air purifier |
| CN206668626U (en) * | 2017-02-27 | 2017-11-24 | 江苏杰尔科技股份有限公司 | A kind of vane diffuser with silencer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829985A (en) * | 2017-09-28 | 2018-03-23 | 中国航发动力股份有限公司 | A kind of modification method of aeroengine fan blades intrinsic frequency |
| CN107829985B (en) * | 2017-09-28 | 2019-09-10 | 中国航发动力股份有限公司 | A kind of modification method of aeroengine fan blades intrinsic frequency |
| CN108731066A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |