Environmental control unit including noise reduction features
US10928096B2 · kind B2 · utility
4Cited by
23References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2018 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2013/245
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An environmental control unit, such as an HVAC or heat pump unit, includes an insert disposed within the device housing that provides noise attenuation features. The insert defines air flow paths within the housing. The insert may be formed of a foam material and may include multiple foam blocks that cooperate to form a serpentine passageway therein. The passageway includes multiple turns. The features further include perforated sheet metal panels disposed in the passageway at strategic locations. The perforations are shaped and dimensioned to correspond to the frequencies to be attenuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.