Resonator insert for insertion into an intake pipe of a turbocharger, turbocharger and resonator

A turbocharger (10) for generating an air flow in a piping system, the turbocharger comprising:

• a rotatable compressor wheel (16),
• an intake pipe (12) located directly upstream of the compressor wheel (16) in a direction of air flow, the intake pipe (12) having opposite ends with reduced pipe cross-sections, and
• a resonator insert (14) arranged coaxially in the intake pipe (12) and comprising a tube section (141) that terminates sealingly with the ends of the intake pipe (12) that have the reduced cross-section, the resonator insert (14) further having through-slots (142) extending predominantly in a circumferential direction and being axially adjacent to one another, the through slots (142) connecting an interior of the tube section (141) to a chamber (18) formed between a wall of the tube section (141) and a wall of the intake pipe (12), wherein, the wall of the tube section (141) carries at least one radially outwardly directed, axially extended lamella (144) crossing the through-slots (142), wherein
• the wall of the tube section (141) carries a disc-shaped annular wall (145) arranged in an axially central region of the tube section (141) and facing radially outwardly, the disc-shaped annular wall (145) being aligned perpendicular to an axial direction and resting against a wall of the intake pipe (12) so as to divide the chamber (18) into first and second axial chamber sections sealed against each other, and the through slots being arranged only on an axial side of the annular wall aligned with the first axial chamber section so that the first axial chamber section defines a resonator chamber.

A resonator comprising:

• an outer pipe (121) with reduced pipe cross-sections at both ends, and a resonator insert (14) arranged coaxially in the outer pipe (121) and comprising a tube section (141) that terminates sealingly with the ends of the outer pipe (121) that have the reduced cross-section, the tube section (141) having a wall with axially adjacent through-slots (142) extending predominantly in a circumferential direction and via which an interior of the tube section (141) is connected to a chamber (18) formed between the tube section (141) and a wall of the outer pipe (121), and at least one axially extended lamella (14) crossing the through-slots (142), the at least one lamella (14) extending at least partly between the inner tube section (141) and the outer pipe (121) and connected to at least one of the inner tube section (141) or the outer pipe (121), wherein;
• the wall of the tube section (141) further carries a disk-shaped annular wall (145) that is arranged in an axially central region of the tube section (141), the annular wall (145) faces radially outwardly, is aligned perpendicular to the axial direction and rest against the wall of the outer pipe (121), so that the annular wall (145) divided the resonator chamber into two axial annular chamber sections sealed against each other, and the through-slots (142) are arranged on only one axial side of the annular wall (145).