Dry acoustic system preventing condensation
US5446249A · kind A · utility
16Cited by
6References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1993 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Jul 13, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3223
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active noise control system is provided for cancellation of noise in a duct. A speaker is mounted over an opening in the duct. An enclosure is mounted the duct about the speaker. Air flow is generated through the enclosure in order to balance the diffusion of water vapor through the speaker such that the dew point of the air in the enclosure is always below the temperature of the air in the enclosure, thus avoiding condensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.