EP3927976C0 - Device for reducing fan-generated noise - Google Patents
Device for reducing fan-generated noiseInfo
- Publication number
- EP3927976C0 EP3927976C0 EP20704882.8A EP20704882A EP3927976C0 EP 3927976 C0 EP3927976 C0 EP 3927976C0 EP 20704882 A EP20704882 A EP 20704882A EP 3927976 C0 EP3927976 C0 EP 3927976C0
- Authority
- EP
- European Patent Office
- Prior art keywords
- generated noise
- reducing fan
- fan
- reducing
- 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.)
- Active
Links
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
- Cookers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102019000002403A IT201900002403A1 (en) | 2019-02-19 | 2019-02-19 | Device to reduce the noise generated by a fan |
PCT/EP2020/054014 WO2020169498A1 (en) | 2019-02-19 | 2020-02-17 | Device for reducing fan-generated noise |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3927976A1 EP3927976A1 (en) | 2021-12-29 |
EP3927976B1 EP3927976B1 (en) | 2024-04-24 |
EP3927976C0 true EP3927976C0 (en) | 2024-04-24 |
Family
ID=66589768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20704882.8A Active EP3927976B1 (en) | 2019-02-19 | 2020-02-17 | Device for reducing fan-generated noise |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3927976B1 (en) |
IT (1) | IT201900002403A1 (en) |
WO (1) | WO2020169498A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018146489A1 (en) | 2017-02-09 | 2018-08-16 | The University Of Sussex | Acoustic wave manipulation by means of a time delay array |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3831263B2 (en) * | 2002-01-21 | 2006-10-11 | 独立行政法人科学技術振興機構 | Duct silencer |
EP1720153A1 (en) * | 2004-02-13 | 2006-11-08 | Japan Science and Technology Agency | Silencer for passage |
WO2009152420A2 (en) | 2008-06-13 | 2009-12-17 | The Penn State Research Foundation | Dipole flow driven resonators for fan noise mitigation |
EP2690365B1 (en) * | 2011-03-22 | 2015-12-30 | Mitsubishi Heavy Industries, Ltd. | Acoustic damper, combustor, and gas turbine |
US9157362B2 (en) | 2012-05-23 | 2015-10-13 | Denso International America, Inc. | Pressure release slot for fan noise improvement |
US10087954B2 (en) | 2013-02-08 | 2018-10-02 | Trane International Inc. | HVAC system with noise reducing tube |
-
2019
- 2019-02-19 IT IT102019000002403A patent/IT201900002403A1/en unknown
-
2020
- 2020-02-17 EP EP20704882.8A patent/EP3927976B1/en active Active
- 2020-02-17 WO PCT/EP2020/054014 patent/WO2020169498A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3927976B1 (en) | 2024-04-24 |
WO2020169498A1 (en) | 2020-08-27 |
IT201900002403A1 (en) | 2020-08-19 |
EP3927976A1 (en) | 2021-12-29 |
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Legal Events
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