Abstract: The invention relates to a flow machine (10), in particular a radial compressor, comprising a rotor (11) with a rotor blade (12); a stator (13) with, preferably, a guide vane (17), the stator defining at least in sections, the at least one flow channel (14) leading to the rotor blades (12) of the rotor (11) and a flow channel (15) leading away from the rotor blades (12) of the rotor (11); the stator (13) comprising, in the region of at least one flow channel (14, 15) at least one foam-like porous sound damping element (23).

Abstract: A muffler for a turbo engine or piston engine, particular a screw compressor, includes a housing (1.1-1.3); a disk arrangement having at least one disk (3, 4, 5) which is fastened to the housing; a pipe arrangement which is fastened to the disk arrangement and which has at least one pipe (2.1, 2.2) for guiding a fluid of the turbo engine or piston engine; and a vibration-damping jacket (9) of dimensionally stable material which at least partially covers the outer side of the housing (2.2). At least one elastic element (3.3, 4.3, 6, 7, 8) is arranged between the pipe arrangement and the housing.

Abstract: Duct sound damper for deliberate reduction of sound waves for a flow machine, particularly for a compressor, with a housing having at least one horizontally extending acoustically reflective back wall and at least one front cover plate. At least one flow channel connected together through inlet opening and outlet opening is enclosed by at least one damper member reducing the sound. The damper member includes horizontal axial stringers, circumferential stringers, the front cover plate, at least one sound-insulating metal element extending horizontal to the flow-guiding cross section, and the acoustically reflective back wall.

Abstract: A muffler for a turbo engine or piston engine, particular a screw compressor, includes a housing (1.1-1.3); a disk arrangement having at least one disk (3, 4, 5) which is fastened to the housing; a pipe arrangement which is fastened to the disk arrangement and which has at least one pipe (2.1, 2.2) for guiding a fluid of the turbo engine or piston engine; and a vibration-damping jacket (9) of dimensionally stable material which at least partially covers the outer side of the housing (2.2). At least one elastic element (3.3, 4.3, 6, 7, 8) is arranged between the pipe arrangement and the housing.

Abstract: Duct sound damper for deliberate reduction of sound waves for a flow machine, particularly for a compressor, with a housing having at least one horizontally extending acoustically reflective back wall and at least one front cover plate. At least one flow channel connected together through inlet opening and outlet opening is enclosed by at least one damper member reducing the sound. The damper member includes horizontal axial stringers, circumferential stringers, the front cover plate, at least one sound-insulating metal element extending horizontal to the flow-guiding cross section, and the acoustically reflective back wall.