US 12,451,110 B2
Sound reducer
Berend Linke, Noerten-Hardenberg (DE)
Assigned to Umfotec Acoustic Solutions GmbH, Northeim (DE)
Filed by Umfotec Acoustic Solutions GmbH, Northeim (DE)
Filed on Apr. 10, 2023, as Appl. No. 18/132,506.
Claims priority of application No. 10 2022 109 764.1 (DE), filed on Apr. 22, 2022.
Prior Publication US 2023/0343316 A1, Oct. 26, 2023
Int. Cl. G10K 11/172 (2006.01); G10K 11/162 (2006.01)
CPC G10K 11/172 (2013.01) [G10K 11/162 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sound reducer (1), comprising:
a first sound reducer axial section (100) comprising: a first annular chamber axial section (140), a first main pipe axial section (110) extending from the first annular chamber axial section (110), a first flow-around body axial section (120) inward of the first main pipe axial section (110) and first struts (130) extending integrally between the first main pipe axial section (110) and the first flow-around body axial section (120) to support the first flow-around body axial section (120) inward of the first main pipe axial section (110); and
a second sound reducer axial section (200) formed separately from the first sound reducer axial section (100) and comprising: a second annular chamber axial section (210), a second main pipe axial section (240) extending from the second annular chamber axial section (210), a second flow-around body axial section (220) inward of the second main pipe axial section (210) and second struts (230) extending integrally between the second main pipe axial section (210) and the second flow-around body axial section (220) and supporting the second flow-around body axial section (220) inward of the second main pipe axial section (210), wherein:
the first annular chamber axial section (140) is joined to the second annular chamber axial section (240) to form at least part of an annular chamber (40),
the first and second main pipe axial sections (110, 210) are connected respectively to the first and second annular chamber axial sections (140, 240) and form at least part of a main pipe (10) of the sound reducer (1) inward of the annular chamber (40),
a first window (11) in the main pipe (10) provides sound-conducting communication between the main pipe (10) and the annular chamber (40), and
ends of the first and second flow-around body axial sections (120, 220) are joined to form a flow-around body (20) in the main pipe (10).