Patent ID: 11912210
Assignee: MANN+HUMMEL GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F  G | IPC B  F  G

Claim 8:
9. A resonator insert configured for installation into an interior of a resonator casing, the resonator insert comprising:
a tubular pipe elongated along a central axis from a first axial end to a second axial end of the broadband resonator insert, the tubular pipe having a circumferential outer wall having a plurality of plurality of perforation holes spaced apart and extending radially through the circumferential outer wall,
wherein an interior of the tubular pipe forms a gas flow duct for guiding a gas flow through the broadband resonator from the first axial end to the second axial end;
a plurality of annular disk-shaped walls provided on and projecting radially outwardly from the circumferential outer wall of the tubular pipe, adjacent annular disk-shaped walls spaced axially part from each other to define resonator chambers therebetween;
wherein a first one of the plurality of the annular disk-shaped walls is arranged proximate to the first axial end of the resonator insert;
wherein a bell-mouth is formed at the second axial end of the tubular pipe, the bell-mouth flared radially outwardly wherein the resonator insert includes a rotational alignment locking structure configured to engage with the resonator casing to enforce a desired rotational alignment of the resonator insert in the resonator casing; wherein the rotational alignment locking structure includes an indentation formed into a radially outer edge of at least one of the plurality of annular disk-shaped walls, the indentation configured to engage a projection feature of the resonator casing; wherein the rotational alignment locking structure further includes two axially projecting walls, spaced apart circumferentially adjacent to opposite side of the indentation, the two axially projecting walls projecting axially outwardly from and extending on the at least one of the plurality of annular disk-shaped walls, in a direction away from the indention and towards the circumferential outer wall of the tubular pipe; wherein the two axially projecting walls are configured for contact against the projection feature of the resonator casing to enforce a desired rotational alignment of the resonator insert in the resonator casing.