CN108087342A - A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure - Google Patents
A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure Download PDFInfo
- Publication number
- CN108087342A CN108087342A CN201810037984.9A CN201810037984A CN108087342A CN 108087342 A CN108087342 A CN 108087342A CN 201810037984 A CN201810037984 A CN 201810037984A CN 108087342 A CN108087342 A CN 108087342A
- Authority
- CN
- China
- Prior art keywords
- diffuser
- noise elimination
- spiral case
- helmholtz resonance
- resonance noise
- 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
- 230000008030 elimination Effects 0.000 title claims abstract description 26
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 26
- 239000005435 mesosphere Substances 0.000 claims abstract description 18
- 238000005192 partition Methods 0.000 claims description 7
- 230000030279 gene silencing Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 241000237858 Gastropoda Species 0.000 claims 2
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 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
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- 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
- 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
Abstract
The present invention relates to a kind of centrifugal blower diffusers with helmholtz resonance noise elimination structure, belong to noise elimination technique field.It includes helmholtz resonance noise elimination cavity, spiral case, mesosphere, diffuser seat and gear-box；The spiral case is connected with mesosphere, and diffuser seat is connected with spiral case；Gear-box is connected respectively with spiral case and diffuser seat；The helmholtz resonance noise elimination cavity is arranged on the inner wall of mesosphere and/or diffuser seat.The invention has the advantages of simple structure, compactness and reasonable structure, and manufacture is at low cost, is suitble to use on the high-speed centrifugal fan of all specifications；It can realize effective reduction and inhibition by frequency noise to centrifugal compressor impeller, reduce the overall noise of centrifugal compressor.
Description
Technical field
It is specifically a kind of the present invention relates to a kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure
For reducing centrifugal fan impeller by the device of frequency noise, belong to noise elimination technique field.
Background technology
When centrifugal fan is run, the rotating speed of impeller typically is up to up to ten thousand rpms, and impeller is to working gas
Compression generate a specific frequency noise, be referred to as impeller and pass through frequency（BPF: Blade Pass Frequency）, this
The frequency of a 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, a kind of with helmholtz resonance noise elimination structure so as to provide
Centrifugal blower diffuser, it is simple in structure, at low cost.
Technical scheme, a kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure, including the last of the twelve Earthly Branches
Mu Huozi resonant silencings chamber, spiral case, mesosphere, diffuser seat and gear-box；The spiral case is connected with mesosphere, diffuser seat with
Spiral case connects；Gear-box is connected respectively with spiral case and diffuser seat；The helmholtz resonance noise elimination cavity be arranged at mesosphere and/
Or on the inner wall of diffuser seat.
After the spiral case, mesosphere and diffuser seat surround, air ventilation passage is formed.
The spiral case is threadably secured with mesosphere to be connected；Diffuser seat is threadably secured with spiral case to be connected；Gear
Case is threadably secured and is connected with spiral case and diffuser seat.
The helmholtz resonance noise elimination cavity includes perforated panel, honeycomb partition plate and bottom plate；The honeycomb partition plate is arranged at
Between perforated panel and bottom plate.The depth of the helmholtz resonance noise elimination cavity is 5-70mm.
Beneficial effects of the present invention：The invention has the advantages of simple structure, compactness and reasonable structure, and manufacture is at low cost, is suitble to the height of all specifications
It is used on fast centrifugal blower；It can realize effective reduction and inhibition by frequency noise to centrifugal compressor impeller, reduce
The overall noise of centrifugal compressor.
Description of the drawings
Fig. 1 is diagrammatic cross-section of the present invention.
Fig. 2 is helmholtz resonance noise elimination cavity structure diagram.
Reference sign：1st, helmholtz resonance noise elimination cavity；2nd, spiral case；3rd, mesosphere；4th, diffuser seat；5th, gear
Case；6th, air ventilation passage；7th, perforated panel；8th, honeycomb partition plate；9th, bottom plate.
Specific embodiment
As shown in Figs. 1-2, a kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure, including Helmholtz
Resonant silencing chamber 1, spiral case 2, mesosphere 3, diffuser seat 4 and gear-box 5；The spiral case 2 is connected with mesosphere 3, diffuser seat 4
It is connected with spiral case 2；Gear-box 5 is connected respectively with spiral case 2 and diffuser seat 4；During the helmholtz resonance noise elimination cavity 1 is arranged at
Between circle 3 and/or diffuser seat 4 inner wall on.
After the spiral case 2, mesosphere 3 and diffuser seat 4 surround, air ventilation passage 6 is formed.
The spiral case 2 is threadably secured with mesosphere 3 to be connected；Diffuser seat 4 is threadably secured with spiral case 2 and is connected；
Gear-box 5 is threadably secured and is connected with spiral case 2 and diffuser seat 4.
The helmholtz resonance noise elimination cavity 1 includes perforated panel 7, honeycomb partition plate 8 and bottom plate 9；The honeycomb partition plate 7 is set
It is placed between perforated panel 6 and bottom plate 8.
The depth of the helmholtz resonance noise elimination cavity 1 is 5-70mm.The height of blade body is 5 to 100mm.
During present invention work, centrifugal fan operating, noise is propagated along air-flow wind direction, runs into the leading edge of blade, is passed through
Helmholtz resonance noise elimination cavity 1 obtains identical with blade passing frequency, opposite in phase a sound wave after reflecting, so as to counteract
Partial blade reduces overall noise level by the noise in frequency.
Claims (5)
1. a kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure, it is characterized in that：Including helmholtz resonance
Noise elimination cavity（1）, spiral case（2）, mesosphere（3）, diffuser seat（4）And gear-box（5）；The spiral case（2）With mesosphere（3）Even
It connects, diffuser seat（4）With spiral case（2）Connection；Gear-box（5）Respectively with spiral case（2）With diffuser seat（4）Connection；The last of the twelve Earthly Branches nurse
Hereby resonant silencing chamber suddenly（1）It is arranged at mesosphere（3）And/or diffuser seat（4）Inner wall on.
2. there is the centrifugal blower diffuser of helmholtz resonance noise elimination structure as described in claim 1, it is characterized in that：The snail
Shell（2）, mesosphere（3）With diffuser seat（4）After surrounding, air ventilation passage is formed（6）.
3. there is the centrifugal blower diffuser of helmholtz resonance noise elimination structure as described in claim 1, it is characterized in that：The snail
Shell（2）With mesosphere（3）It is threadably secured connection；Diffuser seat（4）With spiral case（2）It is threadably secured connection；Gear-box
（5）With spiral case（2）With diffuser seat（4）It is threadably secured connection.
4. there is the centrifugal blower diffuser of helmholtz resonance noise elimination structure as described in claim 1, it is characterized in that：The last of the twelve Earthly Branches
Mu Huozi resonant silencing chambers（1）Including perforated panel（7）, honeycomb partition plate（8）And bottom plate（9）；The honeycomb partition plate（8）It is arranged at
Perforated panel（7）With bottom plate（9）Between.
5. there is the centrifugal blower diffuser of helmholtz resonance noise elimination structure as described in claim 1, it is characterized in that：The last of the twelve Earthly Branches
Mu Huozi resonant silencing chambers（1）Depth be 5-70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037984.9A CN108087342A (en) | 2018-01-16 | 2018-01-16 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037984.9A CN108087342A (en) | 2018-01-16 | 2018-01-16 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087342A true CN108087342A (en) | 2018-05-29 |
Family
ID=62182231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810037984.9A Pending CN108087342A (en) | 2018-01-16 | 2018-01-16 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087342A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379712A (en) * | 2018-12-28 | 2020-07-07 | 三菱重工业株式会社 | Centrifugal compressor |
| CN112445073A (en) * | 2019-08-29 | 2021-03-05 | 上海微电子装备（集团）股份有限公司 | Noise protection device, protection system, photoetching machine and noise protection method |
| CN115288980A (en) * | 2022-08-17 | 2022-11-04 | 广东美芝制冷设备有限公司 | Muffler and compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06156276A (en) * | 1992-11-18 | 1994-06-03 | Hitachi Ltd | Silencer device of car |
| US20020036115A1 (en) * | 2000-06-30 | 2002-03-28 | Short Brothers Plc | Noise attenuation panel |
| CN1491308A (en) * | 2000-12-21 | 2004-04-21 | ����ɪ-���¹�˾ | Double layer acoustic liner and fluid pressurizing device and method utilizing same |
| US20130025967A1 (en) * | 2011-07-25 | 2013-01-31 | Dresser-Rand Company | Acoustic Array of Polymer Material |
| CN104100574A (en) * | 2014-07-11 | 2014-10-15 | 无锡杰尔压缩机有限公司 | Mechanism for synchronously adjusting diffusion guide vanes of fan |
| CN207989400U (en) * | 2018-01-16 | 2018-10-19 | 江苏杰尔科技股份有限公司 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
-
2018
- 2018-01-16 CN CN201810037984.9A patent/CN108087342A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06156276A (en) * | 1992-11-18 | 1994-06-03 | Hitachi Ltd | Silencer device of car |
| US20020036115A1 (en) * | 2000-06-30 | 2002-03-28 | Short Brothers Plc | Noise attenuation panel |
| CN1491308A (en) * | 2000-12-21 | 2004-04-21 | ����ɪ-���¹�˾ | Double layer acoustic liner and fluid pressurizing device and method utilizing same |
| US20130025967A1 (en) * | 2011-07-25 | 2013-01-31 | Dresser-Rand Company | Acoustic Array of Polymer Material |
| CN104100574A (en) * | 2014-07-11 | 2014-10-15 | 无锡杰尔压缩机有限公司 | Mechanism for synchronously adjusting diffusion guide vanes of fan |
| CN207989400U (en) * | 2018-01-16 | 2018-10-19 | 江苏杰尔科技股份有限公司 | A kind of centrifugal blower diffuser with helmholtz resonance noise elimination structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379712A (en) * | 2018-12-28 | 2020-07-07 | 三菱重工业株式会社 | Centrifugal compressor |
| CN111379712B (en) * | 2018-12-28 | 2022-07-01 | 三菱重工业株式会社 | Centrifugal compressor |
| CN112445073A (en) * | 2019-08-29 | 2021-03-05 | 上海微电子装备（集团）股份有限公司 | Noise protection device, protection system, photoetching machine and noise protection method |
| CN112445073B (en) * | 2019-08-29 | 2022-09-02 | 上海微电子装备（集团）股份有限公司 | Noise protection device, protection system, photoetching machine and noise protection method |
| CN115288980A (en) * | 2022-08-17 | 2022-11-04 | 广东美芝制冷设备有限公司 | Muffler and compressor |
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