TUNABLE ACOUSTIC METAMATERIALS FOR SOUND DAMPENING OF HVAC EQUIPMENT

    公开(公告)号:US20240167724A1

    公开(公告)日:2024-05-23

    申请号:US18057585

    申请日:2022-11-21

    摘要: Example embodiments of the present disclosure relate to improved sound attenuation configurations and methods of manufacturing the same. An example embodiment includes a low noise climate control device. This device may include a housing and a noise producing component within the housing. Further, the device may include an acoustic metamaterial stack arranged in the housing. The acoustic metamaterial stack may include a perforated layer arranged over a spacer layer, and the spacer layer arranged over another perforated layer. Each of the perforated layers may include a plurality of perforations creating a percentage of open area (POA). The perforated layers may further include set(s) of sheets that each including a plurality of openings. These set(s) of sheets may be arranged such that the plurality of openings in the sheets for each perforated layer are coordinate to create the plurality of perforations in each of the perforated layers.