CS213325B2 - Cabinet of centrifugal ventilator with the insertion for the sound absorption - Google Patents
Cabinet of centrifugal ventilator with the insertion for the sound absorption Download PDFInfo
- Publication number
- CS213325B2 CS213325B2 CS474177A CS474177A CS213325B2 CS 213325 B2 CS213325 B2 CS 213325B2 CS 474177 A CS474177 A CS 474177A CS 474177 A CS474177 A CS 474177A CS 213325 B2 CS213325 B2 CS 213325B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- centrifugal fan
- insert
- fan housing
- sound
- walls
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 title 1
- 230000037431 insertion Effects 0.000 title 1
- 238000003780 insertion Methods 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 239000011491 glass wool Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- -1 for example basalt Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 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
- F04D29/664—Sound attenuation by means of sound absorbing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU76FU345A HU173594B (hu) | 1976-10-21 | 1976-10-21 | Spiral'nyj korpus ventiljatora s shumoglushitelem peremennoj tol'shiny |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS213325B2 true CS213325B2 (en) | 1982-04-09 |
Family
ID=10996357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS474177A CS213325B2 (en) | 1976-10-21 | 1977-07-18 | Cabinet of centrifugal ventilator with the insertion for the sound absorption |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT367873B (de) |
| CH (1) | CH632062A5 (de) |
| CS (1) | CS213325B2 (de) |
| DE (1) | DE2736047A1 (de) |
| FR (1) | FR2368624A1 (de) |
| GB (1) | GB1563439A (de) |
| HU (1) | HU173594B (de) |
| IT (1) | IT1085194B (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3151386A1 (de) * | 1981-12-24 | 1983-07-14 | FSL Fenster-System-Lüftung GmbH, 6800 Mannheim | Geblaese, insbesondere einbaugeblaese |
| GB2330624A (en) * | 1997-10-23 | 1999-04-28 | Wang Samw Hong Jen | Fan device with noise reduction |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB926088A (en) * | 1960-11-08 | 1963-05-15 | Brightside Heating & Engineeri | Improvements relating to centrifugal fans |
| DE1403496A1 (de) * | 1961-07-01 | 1969-01-30 | Daimler Benz Ag | Kuehl- oder Heissluftgeblaese |
| US3312389A (en) * | 1964-05-04 | 1967-04-04 | Fukuo Saeki | Air blower device with silencer |
| GB1107726A (en) * | 1964-07-07 | 1968-03-27 | Sound Attenuators Ltd | Improved centrifugal fan or blower and a ventilator embodying the same |
| CH434985A (de) * | 1966-02-01 | 1967-04-30 | Abrisari Ag | Luftfördermaschine, insbesondere zur Belüftung von Schutzräumen |
| CH439990A (de) * | 1966-03-11 | 1967-07-15 | Abrisaria Ag | Luftfördermaschine, insbesondere zur Belüftung von Schutzräumen |
| FR2193182A1 (de) * | 1972-07-24 | 1974-02-15 | Grandvuinet Ets | |
| US4174020A (en) * | 1975-07-01 | 1979-11-13 | Challis Louis A | Acoustic treatment for fans |
-
1976
- 1976-10-21 HU HU76FU345A patent/HU173594B/hu not_active IP Right Cessation
-
1977
- 1977-06-13 CH CH732977A patent/CH632062A5/de not_active IP Right Cessation
- 1977-06-14 AT AT417077A patent/AT367873B/de active
- 1977-07-06 GB GB2834777A patent/GB1563439A/en not_active Expired
- 1977-07-18 CS CS474177A patent/CS213325B2/cs unknown
- 1977-08-10 DE DE19772736047 patent/DE2736047A1/de active Pending
- 1977-09-23 FR FR7728810A patent/FR2368624A1/fr active Granted
- 1977-09-29 IT IT2808477A patent/IT1085194B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| CH632062A5 (en) | 1982-09-15 |
| IT1085194B (it) | 1985-05-28 |
| HU173594B (hu) | 1979-06-28 |
| AT367873B (de) | 1982-08-10 |
| FR2368624B1 (de) | 1984-09-14 |
| DE2736047A1 (de) | 1978-05-03 |
| FR2368624A1 (fr) | 1978-05-19 |
| GB1563439A (en) | 1980-03-26 |
| ATA417077A (de) | 1981-12-15 |
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